CN101047981B - System and method for implementing service quality consultation mechanism - Google Patents

System and method for implementing service quality consultation mechanism Download PDF

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Publication number
CN101047981B
CN101047981B CN200610074958A CN200610074958A CN101047981B CN 101047981 B CN101047981 B CN 101047981B CN 200610074958 A CN200610074958 A CN 200610074958A CN 200610074958 A CN200610074958 A CN 200610074958A CN 101047981 B CN101047981 B CN 101047981B
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qos
unit
information
degrades
pcrf
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CN101047981A (en
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魏华
王樱
刘文宇
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Huawei Technologies Co Ltd
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Huawei Technologies Co Ltd
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Priority to PCT/CN2007/001386 priority patent/WO2007121686A1/en
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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/80—Actions related to the user profile or the type of traffic
    • H04L47/805—QOS or priority aware
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/10—Flow control; Congestion control
    • H04L47/15—Flow control; Congestion control in relation to multipoint traffic
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L47/00—Traffic control in data switching networks
    • H04L47/70—Admission control; Resource allocation
    • H04L47/82—Miscellaneous aspects
    • H04L47/824—Applicable to portable or mobile terminals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W28/00—Network traffic management; Network resource management
    • H04W28/16—Central resource management; Negotiation of resources or communication parameters, e.g. negotiating bandwidth or QoS [Quality of Service]
    • H04W28/24—Negotiating SLA [Service Level Agreement]; Negotiating QoS [Quality of Service]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W4/00—Services specially adapted for wireless communication networks; Facilities therefor
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup

Abstract

This invention discloses a system to realize QoS consultative mechanism, including: MS, RAN, AGW, PCRF module, AF module, and the system further includes: the space between PCRF module with AF betweenmodules includes: the connectivity of PCRF unit to receive the information of quality degradation QoS form AF unit authorized by application layer. The space between AGW and PCRF unit includes: the connectivity of AGW to receive the information of quality degradation QoS form PCRF unit authorized by application layer. The invention also provides a method to realize QoS consultative mechanism.

Description

A kind of system and method for realizing service quality consultation mechanism
Technical field
The present invention relates to carry control technology in a kind of mobile communication system, realize the system and method for service quality (QoS) negotiation mechanism in particularly a kind of carrying control technology (SBBC, Service Based Bearer Control) based on business.
Background technology
The basic process of SBBC technology is: when the user initiates service request, application level function (AF, Application Function) unit receives from service request from user message, and according to the good qos parameter mapping ruler of standard, entrained description to business in the business request information is mapped as such as bandwidth, time delay, the qos parameter of contents such as delay variation, and by with "Policy and Charging Rules Function (PCRF, Policy and Charging Rules Function) interface of unit, be the Tx interface, send of the requirement of the business of relevant process application layer mandate QoS to the PCRF unit; Adjudicate the QoS of the application layer mandate that application layer sends the PCRF unit according to the local policy that pre-establishes, and consequent qos parameter is translated as IAD (AGW, Access Gateway) QoS expression-form to understand, and by and AGW between interface be that the Ty interface is informed AGW, when user and application layer are mutual, the user can initiate the bearing resource reservation request to AGW, the process application layer mandate that AGW then can be relatively receives from PCRF and the QoS of local policy judgement, and the user asks the bearing resource QoS that reserves, if the bearing resource QoS that the user asks to reserve is in the QoS scope of authorizing, then AGW sets up professional the connection according to the bearing resource that the user asked.Described bearing resource is meant the resource of transportation level.
Described AF unit can be Proxy Call Session Control Function (P-CSCF, Proxy CallSession Control Function), service call conversation control function (S-CSCF, Serving CallSession Control Function), application server network entities such as (AS, Application Server).
Below abbreviate the AF unit as AF herein, abbreviate the PCRF unit as PCRF.
Described mandate is meant through application layer: the description according to relevant medium type in the service request that the user initiated promptly is translated as corresponding qos parameter numerical expression form according to the good qos parameter mapping ruler mapping of standard, and according to the user signing contract information of being preserved in the network user is initiated the process that professional QoS request is authorized.
Fig. 1 is the system schematic that realizes the QoS negotiation mechanism in the prior art under the non-roaming scene, this system comprises: travelling carriage (MS) 11, wireless access network (RAN) 12, AGW13, PCRF14, AF15, wherein AGW14 comprises: Signalling exchange unit 131, QoS processing unit 132, bearer network rm-cell 133, PCRF14 comprises: Signalling exchange unit 141, QoS processing unit 142, local policy unit 143, AF15 comprises: Signalling exchange unit 151, QoS translation unit 152, QoS processing unit 153.
MS11 is by the Signalling exchange unit 131 among RAN12, the AGW13, with the Signalling exchange unit 151 interactive application layer information among the AF15, also by the Signalling exchange unit 131 mutual relevant resource informations of setting up among RAN12 and the AGW13.
RAN12 in order to transmitting the information between the Signalling exchange unit 131 among MS11 and the AGW13, and sets up Radio Link carrying connection for the user.
Signalling exchange unit 131 among the AGW13 is by the mutual relevant resource information of setting up of RAN12 and MS11, with the Signalling exchange unit 151 interactive application layer information among the AF15; After the QoS information of the application layer mandate that the Signalling exchange unit 141 among the reception PCRF14 sends, be transmitted to QoS processing unit 132, whether the bearer network resource that receives 132 transmissions of QoS processing unit satisfies or exceeds the information of the QoS of application layer mandate; Can also send the QoS authorization requests in the Signalling exchange unit 141 in PCRF14.
QoS processing unit 132 among the AGW13, after the QoS information of the application layer mandate that reception Signalling exchange unit 131 sends, be transmitted to bearer network rm-cell 133, after receiving bearer network resource that bearer network rm-cell 133 sends and whether satisfying or exceed the information of QoS of application layer mandate, be transmitted to Signalling exchange unit 131.
Bearer network rm-cell 133 among the AGW13, receive the QoS information of the application layer mandate of QoS processing unit 132 transmissions, carry out the judgement whether the bearer network resource satisfies or exceed the QoS of application layer mandate, return the information whether the bearer network resource satisfies or exceed the QoS of application layer mandate to QoS processing unit 132.
Whether described bearer network resource satisfies or exceeds in the judgement of QoS of application layer mandate, if initiating QoS, consults Access Network, then carry out the judgement whether the bearer network resource exceeds the QoS of application layer mandate among the AGW13, initiate the QoS negotiation if use net, then carry out the judgement whether the bearer network resource satisfies the QoS of application layer mandate.
Signalling exchange unit 141 among the PCRF14, receive the QoS information of the application layer mandate of Signalling exchange unit 151 transmissions among the AF15, send the QoS information of application layer mandate to QoS processing unit 142, whether the application layer mandate QoS that reception QoS processing unit 142 returns passes through the information of local policy ruling, and the Signalling exchange unit 131 in AGW sends application layer mandate QoS information; The QoS authorization requests that the Signalling exchange unit 131 among the AGW sends can also be received, the information of the QoS of request application layer mandates can also be the Signalling exchange unit 151 in AF15 sent.
Described local policy ruling is meant: the PCRF that service is provided for the user carries out the qos policy judgement with the QoS of application layer mandate according to the local policy that pre-establishes.
QoS processing unit 142 among the PCRF14, after receiving the application layer mandate QoS information of Signalling exchange unit 141 transmissions, be transmitted to local policy unit 143, whether the application layer mandate QoS that receives 143 transmissions of local policy unit is transmitted to Signalling exchange unit 141 by after the information of local policy ruling.
Local policy unit 143 among the PCRF14, receive the application layer mandate QoS information that QoS processing unit 142 sends, carry out the judgement whether application layer mandate QoS passes through the local policy ruling, return the information whether application layer mandate QoS passes through the local policy ruling to QoS processing unit 142.
Signalling exchange unit 151 among the AF 15 is by the Signalling exchange unit 131 among the AGW13, RAN12 and MS11 interactive application layer information; Send the application layer message that MS11 sends to QoS translation unit 152, after the QoS information of the application layer mandate that reception QoS processing unit 153 sends, be transmitted to the Signalling exchange unit 141 among the PCRF14; Can also receive the information of the QoS of the request application layer mandate that the Signalling exchange unit 141 among the PCRF14 sends.
QoS translation unit 152 among the AF15 translates QoS information behind the application layer message that the MS11 that reception Signalling exchange unit 151 sends sends, and sends the QoS information to QoS processing unit 153.
QoS processing unit 153 among the AF15 receives the QoS information that QoS translation unit 152 sends, and the QoS information of receiving is authorized, and sends the QoS information of application layer mandate to Signalling exchange unit 151.
Fig. 2 is when Access Network is initiated the QoS authorization requests under the non-roaming scene in the prior art, the implementation procedure schematic diagram of QoS negotiation mechanism, and this process comprises following steps:
It is mutual to carry out application layer message between step 201:MS and the AF.
Described step 201 is specially: after the user initiates service request, it is mutual to carry out application layer message between user MS and the AF, AF determines this professional needed QoS information according to the type of service that MS asked, and according to the application-layer authentication strategy this QoS is authorized.
Step 202:MS reserves bearing resource to the AGW request.
Described step 202 is specially: MS request provides the network reservation of data transport service should the needed bearing resource of business.As the part of this resource reservation request process, MS transmits the binding information that is used to differentiate the application layer conversation data flow, and this binding information also can be used to specify the entity that carries out resource reservation mandate approval.
During practical application, step 202 can be carried out after step 201 as shown in Figure 2, also can carry out simultaneously with step 201.
Step 203:AGW sends the QoS authorization requests to PCRF.
Described step 203 is specially: AGW accepts MS institute requested resource reservation request, but think that reserved resource that MS asks need authorize approval by the tactful ruling entity of network, and binding information that can be entrained according to MS, or MS entrained user profile when registration is determined a suitable tactful ruling entity PCRF.AGW asks this PCRF that the pairing QoS of needs reserved resource is authorized according to reserved resource that MS asks.
Step 204:PCRF is to the QoS of AF request application layer mandate.
Described step 204 is specially: after PCRF receives QoS authorization requests from AGW, and the QoS that authorizes to the AF application application layer that this business service is provided according to the information in the QoS authorization requests.
Step 205:AF sends the QoS of application layer mandate to PCRF.
Described step 205 is specially: the information content of entrained user profile and this service conversation in the QoS authorized application request of AF according to PCRF, find in the application layer about this professional information of this user, with the QoS information of application layer, and the QoS information of this application layer mandate returned to PCRF to this service authorization.
During practical application, step 205 can be carried out after step 204 as shown in Figure 2, also can carry out the optional position between step 201 and step 203.When step 205 is carried out between step 201 and step 203, execution in step 204 not among Fig. 2, and described step 205 is specially: AF will send to PCRF and carry out the local policy ruling through the QoS of application layer mandate.
Step 206:PCRF is defined as the QoS of application layer mandate by the local policy ruling.
Described step 206 is specially: after PCRF receives the QoS information of this service application layer mandate that AF sends, merge local policy this QoS is carried out the local policy ruling.The QoS that application layer is authorized this business is within the QoS scope that local policy allowed, then PCRF thinks that this business can use the local network resource according to the QoS that application layer is authorized, otherwise PCRF is defined as QoS and consults failure, and finishes this handling process.
After common PCRF is defined as QoS negotiation failure, multiple processing mode can be arranged, such as: PCRF sends QoS to AF and consults failed message, and AF is that the user sends QoS negotiation failed message etc. by AGW to MS.
Step 207:PCRF sends the QoS that authorizes to AGW.
Described step 207 is specially: PCRF will send to AGW by the QoS information of local policy ruling, and indication AGW is this professional foundation carrying connection of user according to this QoS.Usually, PCRF sends to AGW after the QoS of application layer mandate is converted to AGW form to understand.
Step 208:AGW is defined as the obtainable bearer network resource of current this user in the QoS scope of having authorized.
Described step 208 is specially: after AGW receives QoS from PCRF, application layer mandate QoS can be compared to the QoS that self applies for the user, if the user to the QoS of AGW request in the QoS of application layer mandate scope, the QoS that then accepts the user and asked, if and connect for this business of this user provides bearing resource by this QoS. the processing of user when the QoS that AGW asked has exceeded the QoS of application layer mandate is not provided in the prior art. it has been generally acknowledged that in the prior art and in step 202, reserved bearing resource, and the bearing resource of reserving can satisfy the QoS of application layer mandate certainly, therefore in the step 208, the pairing QoS of bearing resource that the user is reserved to AGW request back exceeds scope that application layer and local policy authorize or in the scope that application layer and local policy are authorized.
Comprised optional step 209～step 210 among Fig. 2, returned the message of confirming QoS to AF in order to AGW.
Step 209:AGW returns affirmation message to QoS to PCRF.
Step 210:PCRF sends the message of confirming QoS to AF.
In the step 210, PCRF is notified to AF with the QoS information of being accepted after receiving the affirmation message to QoS from AGW.
Step 211:AGW notifies this professional resource needed link of MS of user to set up.
During practical application, step 211 can be carried out after step 210 as shown in Figure 2, also can carry out the optional position after step 208.
After the step 211, user's MS and the media stream links between the opposite end can successfully be set up, and the business that the user initiated can begin to carry out.
Fig. 3 is when application layer is initiated the QoS authorization requests under the non-roaming scene in the prior art, the implementation procedure schematic diagram of QoS negotiation mechanism, and this process comprises following steps:
Step 301: identical with step 201.
Step 302:AF sends the QoS of application layer mandate to PCRF.
In the step 302, AF will send to PCRF and carry out the local policy ruling through the QoS of application layer mandate.
Step 303～step 304: identical with step 206～step 207.
Step 305:AGW is defined as the obtainable bearer network resource of current this user and satisfies the QoS that has authorized.
Described step 305 is specially: AGW judges whether the obtainable bearer network resource situation of current this user can satisfy the requirement of this QoS to resource after receiving QoS from PCRF.If the obtainable bearer network resource of current this user can satisfy QoS, then come to provide bearing resource to connect for this business of this user according to this QoS, consult failure otherwise AGW is defined as QoS, and finish this handling process.
After common AGW is defined as QoS negotiation failure, multiple processing mode can be arranged, such as: AGW sends QoS to AF and consults failed message, and AF is that the user sends QoS negotiation failed message etc. by AGW to MS.
Step 306～step 308: identical with step 209～step 211.
After the execution in step 308, user's MS and the media stream links between the opposite end can successfully be set up, and the business that the user initiated can begin to carry out.
Under the user is in roaming scence, for providing the AGW of Access Network service, the user is positioned at visited network, and the PCRF that this AGW connected also is in visited network, and the PCRF that will be in visited network is labeled as visit PCRF (VPCRF); The PCRF that is positioned at the user attaching network is called ownership PCRF (HPCRF).The QoS negotiation mechanism under roaming scence and the difference under the non-roaming scene be that mainly HPCRF is responsible for transmitting the information between AF and the VPCRF, and because VPCRF is positioned at the visited network that the carrying Connection Service is provided for the user, understand the resource operating position of access network more than the HPCRF that is positioned at home network, so the function of being finished by PCRF that comprises local policy ruling etc. is finished by VPCRF under non-roaming scene.
Fig. 4 is the system schematic that roaming scence is realized the QoS negotiation mechanism down in the prior art, this system comprises: MS11, RAN12, AGW13, VPCRF41, HPCRF42, AF15, wherein, PCRF14 among VPCRF41 and Fig. 1 is basic identical, is that Signalling exchange unit 411 among the VPCRF41 shown in Figure 4 is connected with Signalling exchange unit 151 among the AF15 by the Signalling exchange unit 421 among the HPCRF42; Basic identical among MS11, RAN12, AGW13, AF15 and Fig. 1, just among Fig. 4, Signalling exchange unit 131 among the AGW13 is connected with Signalling exchange unit 411 among the VPCRF41, and the Signalling exchange unit 151 among the AF15 comprises by the .HPCRF42 that is connected with Signalling exchange unit 411 among the VPCRF41 of the Signalling exchange unit 421 among the HPCRF42: Signalling exchange unit 421.
Signalling exchange unit 421 among the HPCRF42, the QoS information of the application layer mandate that the Signalling exchange unit 151 among the reception AF15 sends is transmitted to the Signalling exchange unit 411 among the VPCRF41; The QoS authorization requests that the Signalling exchange unit 411 among the VPCRF41 sends can also be received, the information of the QoS of request application layer mandates can also be the Signalling exchange unit 151 in AF15 sent.
Fig. 5 is when Access Network is initiated the QoS authorization requests under the roaming scence in the prior art, the implementation procedure schematic diagram of QoS negotiation mechanism, and this process comprises following steps:
Step 501～step 502: basic identical with step 201～step 202, just the AGW in step 501, the step 502 is positioned at visited network, and the AGW in step 201, the step 202 is positioned at home network.
Step 503:AGW sends the QoS authorization requests to VPCRF.
Described step 503 is specially: AGW accepts MS institute requested resource reservation request, but think that reserved resource that MS asks need authorize approval by the tactful ruling entity of network, therefore the QoS authorization requests is sent to the VPCRF that is connected with self, and ask this VPCRF that the pairing QoS of needs reserved resource is authorized.
Step 504:VPCRF transmits the QoS authorization requests to HPCRF.
Specifically: VPCRF determines the network that this MS belonged to according to the sign of MS in the QoS authorization requests that AGW transmitted, and finds a HPCRF, and will be transmitted to this HPCRF from the QoS authorization requests that AGW receives there
Step 505:HPCRF is to the QoS of AF request application layer mandate.
Described step 505 is specially: after HPCRF receives QoS authorization requests from VPCRF, and the QoS that authorizes to the AF application application layer that this business service is provided according to the information in the QoS authorization requests.
Step 506:AF sends the QoS of application layer mandate to HPCRF.
Specifically: the information content of entrained user profile and this service conversation in the QoS authorized application request of AF according to HPCRF, find in the application layer about this professional information of this user, with the QoS information of application layer, and the QoS information of this application layer mandate returned to HPCRF to this service authorization.
During practical application, step 506 can be carried out after step 505 as shown in Figure 5, also can carry out the optional position between step 501 and step 504.When step 506 is carried out between step 501 and step 504, execution in step 505 not among Fig. 5, and described step 506 is specially: AF will send to HPCRF and carry out the local policy ruling through the QoS of application layer mandate, and comprise the information of the visited network VPCRF that is used for definite active user place.
Step 507:HPCRF transmits the QoS of application layer mandate to VPCRF.
Step 508:VPCRF is defined as the QoS of application layer mandate by the local policy ruling.
Specifically: after VPCRF received the QoS of this service application layer mandate that HPCRF transmits, the local policy that merges visited network carried out the local policy ruling to this QoS.If the QoS that application layer is authorized this business is within the QoS scope that local policy allowed, then VPCRF thinks that this business can use the local network resource according to the QoS that application layer is authorized, otherwise VPCRF is defined as QoS and consults failure, and finishes this handling process.
After common VPCRF is defined as QoS negotiation failure, multiple processing mode can be arranged, such as: VPCRF sends QoS by HPCRF to AF and consults failed message, and AF is that the user sends QoS negotiation failed message etc. by AGW to MS.
Step 509:VPRF sends the QoS that authorizes to AGW.
Specifically: VPCRF will send to AGW by the QoS information of local policy ruling, and indication AGW is this professional foundation carrying connection of user according to this QoS.Usually, VPCRF sends to AGW after the QoS of application layer mandate is converted to AGW form to understand.
Step 510:AGW is defined as the obtainable bearer network resource of current this user in the QoS scope of having authorized.
Specifically: after AGW receives QoS from VPCRF, application layer mandate QoS can be compared to the QoS that self applies for the user, if the user to self the request QoS in the QoS of application layer mandate scope, the QoS that then accepts the user and asked, and provide bearing resource to connect for this business of this user by this QoS.The processing when if the QoS that does not provide the user in the prior art and asked has exceeded the QoS of application layer mandate.It has been generally acknowledged that in the prior art and in step 502, reserved bearing resource, and the bearing resource of reserving can satisfy the QoS of application layer mandate certainly, therefore in the step 510, the pairing QoS of bearing resource that the user is reserved to AGW request back exceeds scope that application layer and local policy authorize or in the scope that application layer and local policy are authorized.
Comprised optional step 511～step 513 among Fig. 5, returned the message of confirming QoS to AF in order to AGW.
Step 511～step 513:AGW returns affirmation message to QoS by VPCRF, HPCRF to AF.
Step 514:AGW notifies this professional resource needed link of MS of user to set up.
During practical application, step 514 can be carried out after step 513 as shown in Figure 5, also can carry out the optional position after step 510.
After the step 514, user's MS and the Media Stream between the opposite end connect the road can successfully be set up, and the business that the user initiated can begin to carry out.
Fig. 6 is when application layer is initiated the QoS authorization requests under the roaming scence in the prior art, the implementation procedure schematic diagram of QoS negotiation mechanism, and this process comprises following steps:
Step 601: identical with step 501.
Step 602:AF sends the QoS of application layer mandate to HPCRF.
In the step 602, AF will send to HPCRF and carry out the local policy ruling through the QoS of application layer mandate, and AF sends the VPCRF information that is used for determining active user place visited network to HPCRF simultaneously.
Step 603:HPCRF sends the QoS of application layer mandate to VPCRF.
Specifically: HPCRF determines a suitable VPCRF who is positioned at the current place of user visited network according to the information of receiving from AF, and will be transmitted to this VPCRF from the QoS information that AF receives there.
Step 604～step 610: identical with step 508～step 514.
After the step 610, user's MS and the media stream links between the opposite end are successfully set up, and the business that the user initiated begins to carry out.
The shortcoming of prior art is:
In the prior art in SBBC stages (stage) the 2 baseline manuscript given QoS negotiation mechanism perfect inadequately, if when not providing the local policy ruling that QoS that application layer authorizes can not be by PCRF, or the QoS that is authorized after the process PCRF ruling can not be accepted by AGW, promptly through the QoS that authorized after the PCRF ruling exceeded AGW can provide the resource allowed band time, how this carries out the scheme that subsequent treatment ensures that the Client-initiated service request can be performed.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of system of the QoS of realization negotiation mechanism, can improve the possibility that business that the user asks is set up in the mass range that user and network can both be accepted.
Another main purpose of the present invention is to provide a kind of method of the QoS of realization negotiation mechanism, can improve the possibility that business that the user asks is set up in the mass range that user and network can both be accepted.
Technical scheme of the present invention is achieved in that
A kind of system that realizes the QoS negotiation mechanism, comprise: mobile station MS, wireless access network RAN, access gateway AG W, strategy and billing function PCRF unit, application level function AF unit, MS is by RAN, AGW and AF unit interactive application layer information, the PCRF unit receives the default QoS information of application layer mandate that the AF unit sends, AGW receives the default QoS information of application layer mandate that the PCRF unit sends, and this system further comprises:
Comprise between PCRF unit and the AF unit: the PCRF unit receives being connected of the QoS information that degrades of the application layer mandate that the AF unit sends;
Further comprise between PCRF unit and the AF unit: the PCRF unit sends being connected of message that request heavily consults to degrade back QoS to the AF unit;
Comprise between AGW and the PCRF unit: AGW receives being connected of the QoS information that degrades of the application layer mandate that the PCRF unit sends;
Further comprise between AGW and the PCRF unit: AGW sends the bearer network resource to the PCRF unit and does not satisfy being connected of the information of having authorized default QoS.
Further comprise between PCRF unit and the AF unit: the PCRF unit sends being connected of message that request heavily consults to degrade back QoS to the AF unit.
Further comprise between AGW and the PCRF unit: AGW sends the bearer network resource to the PCRF unit and does not satisfy being connected of the information of having authorized default QoS.
AGW comprises: Signalling exchange unit, default QoS processing unit, bearer network rm-cell, and described AGW further comprises:
The QoS processing unit that degrades is used to receive the QoS information that degrades of the application layer mandate that the Signalling exchange unit sends, and sends the QoS state information that degrades to the Signalling exchange unit; Send the QoS information that degrades to the bearer network rm-cell, receive the QoS state information that degrades, default QoS state information that the bearer network rm-cell sends;
The Signalling exchange unit, further receive the QoS information that degrades of the application layer mandate that the PCRF unit sends after, be transmitted to the QoS processing unit that degrades; The reception QoS state information that degrades that the QoS processing unit sends that degrades;
The bearer network rm-cell, further send default QoS state information to the QoS processing unit that degrades, the degrade QoS information that degrades of the application layer mandate that the QoS processing unit sends of reception, the QoS state information of determining to degrade, and return the QoS state information that degrades to the QoS processing unit that degrades.
The PCRF unit comprises: Signalling exchange unit, default QoS processing unit, local policy unit, and described PCRF unit further comprises:
The QoS processing unit that degrades is used to receive the QoS information that degrades of the application layer mandate that the Signalling exchange unit sends, and sends the QoS state information that degrades to the Signalling exchange unit; Send the QoS information that degrades to the local policy unit, receive the QoS state information that degrades, default QoS state information that the local policy unit sends;
The Signalling exchange unit, further receive the QoS information that degrades of the application layer mandate that the AF unit sends after, be transmitted to the QoS processing unit that degrades; The reception QoS state information that degrades that the QoS processing unit sends that degrades sends the QoS information that degrades of application layer mandate to AGW;
The local policy unit, further send default QoS state information to the QoS processing unit that degrades, the degrade QoS information that degrades of the application layer mandate that the QoS processing unit sends of reception, the QoS state information of determining to degrade, and return the QoS state information that degrades to the QoS processing unit that degrades.
Described PCRF unit further comprises: the CAMEL-Subscription-Information unit;
Be used for receiving inquiring user that the QoS processing unit that degrades of PCRF unit sends and whether contracted and degrade after the message of QoS, return user's information of QoS of degrading of whether having contracted to the QoS processing unit that degrades;
The QoS processing unit that degrades in the PCRF unit further sends the inquiring user message of QoS of degrading of whether having contracted to the CAMEL-Subscription-Information unit, receives user that the CAMEL-Subscription-Information interface unit the returns information of QoS of degrading of whether having contracted.
Described PCRF unit further comprises: the CAMEL-Subscription-Information unit;
Be used for receiving inquiring user that the QoS processing unit that degrades of PCRF unit sends and degrade after the message of QoS information, return user's the QoS information that degrades to the QoS processing unit that degrades;
The QoS processing unit that degrades in the PCRF unit further sends the degrade message of QoS information of inquiring user to the CAMEL-Subscription-Information unit, receives the user's that the CAMEL-Subscription-Information interface unit returns the QoS information that degrades.
The AF unit comprises: Signalling exchange unit, QoS translation unit, default QoS processing unit, and described AF unit further comprises:
The QoS processing unit that degrades is used for the QoS that degrades is authorized, and the Signalling exchange unit in the AF unit sends the QoS information that degrades of application layer mandate;
Signalling exchange unit in the AF unit, further receive the QoS information that degrades of the application layer mandate that the QoS processing unit that degrades in the AF unit sends after, be transmitted to the PCRF unit.
Described AF unit further comprises: the CAMEL-Subscription-Information unit;
Be used for receiving the degrade message of QoS CAMEL-Subscription-Information of inquiring user that the QoS processing unit that degrades of AF unit sends, the QoS processing unit that degrades in the AF unit returns the degrade CAMEL-Subscription-Information of QoS of user;
The QoS processing unit that degrades in the AF unit sends the degrade message of QoS CAMEL-Subscription-Information of inquiring user to the CAMEL-Subscription-Information unit, receives the user who returns the CAMEL-Subscription-Information unit in the AF unit QoS CAMEL-Subscription-Information that degrades.
Described AF unit further comprises: the CAMEL-Subscription-Information unit;
Be used for receiving inquiring user that the Signalling exchange unit of AF unit the sends information of QoS of degrading of whether having contracted, the Signalling exchange unit in the AF unit sends user's information of QoS of degrading of whether having contracted;
Signalling exchange unit in the AF unit, CAMEL-Subscription-Information unit in the AF unit sends the inquiring user information of QoS of degrading of whether having contracted, receive the user who returns the CAMEL-Subscription-Information unit in the AF unit information of QoS of degrading of whether having contracted, the QoS translation unit in the AF unit sends user's information of QoS of degrading of having contracted;
QoS translation unit in the AF unit further receives user that the Signalling exchange unit in the AF unit the sends information of QoS of degrading of having contracted, translate the QoS information that degrades after, the QoS processing unit that degrades in the AF unit sends the QoS information that degrades;
The QoS processing unit that degrades in the AF unit receives the QoS information that degrades that the QoS translation unit in the AF unit sends.
CAMEL-Subscription-Information unit in the described AF unit is: CAMEL-Subscription-Information database or obtain the CAMEL-Subscription-Information interface;
CAMEL-Subscription-Information database, further storing user subscription information;
Obtain the CAMEL-Subscription-Information interface, further obtain the degrade CAMEL-Subscription-Information of QoS of user with the external data base interactive information of storing user subscription information.
CAMEL-Subscription-Information unit in the described AF unit is for obtaining the CAMEL-Subscription-Information interface, and described external data base is: home subscriber server HSS or authentication and authorization charging AAA database or application server AS.
Described PCRF unit is visited network PCRF; Further comprise between AF unit and the visited network PCRF: home network PCRF;
Home network PCRF is used to transmit the information between visited network PCRF and the AF unit.
A kind of method that realizes the QoS negotiation mechanism, the method includes the steps of:
A, user send service request to the AF unit of network side, and the AF unit of network side carries out QoS to the business of user's request and authorizes;
Whether the default QoS of the PCRF unit judges application layer mandate of B, network side judges by the AGW of local policy ruling and network side whether the obtainable bearer network resource of active user satisfies default QoS, if then set up bearing resource for this business by default QoS; Otherwise whether the QoS that degrades of the PCRF unit judges application layer mandate of network side judges by the AGW of local policy ruling and network side whether the obtainable bearer network resource of active user satisfies the QoS that degrades, if then set up bearing resource for this business by the QoS that degrades; Otherwise be defined as QoS and consult failure.
Further comprise between steps A and the step B: the AF unit sends the default QoS information of application layer mandate to the PCRF unit of network side.
Further comprise before the step B: the AGW of user in network side sends the bearing resource reservation request; AGW sends the QoS authorization requests to the PCRF unit of network side;
Described step B specifically comprises following steps:
Whether the default QoS of PCRF unit judges application layer mandate in B11, the network side by the local policy ruling, if, execution in step B12 then; Otherwise execution in step B14;
B12, PCRF unit send default QoS information to AGW;
B13, AGW set up bearing resource by default QoS, and finish this handling process;
Whether B14, the mandate of PCRF unit judges application layer degrade QoS by the local policy ruling, if then execution in step B15 consults failure otherwise the PCRF unit is defined as QoS, and finishes this handling process;
B15, PCRF unit send the QoS information that degrades to AGW;
B16, AGW set up bearing resource by the QoS that degrades.
Described step B specifically comprises following steps:
Whether the default QoS of PCRF unit judges application layer mandate in B21, the network side by the local policy ruling, if, execution in step B22 then; Otherwise execution in step B25;
B22, PCRF unit send default QoS information to AGW;
B23, AGW judge whether the obtainable bearer network resource of current described user satisfies default QoS, if satisfy, then set up bearing resource by default QoS, and finish this handling process; Otherwise execution in step B24;
B24, AGW judge that whether the obtainable bearer network resource of current described user satisfies the QoS that degrades, if satisfy, then sets up bearing resource by the QoS that degrades, and finishes this handling process; Otherwise AGW is defined as QoS and consults failure, and finishes this handling process;
Whether B25, the mandate of PCRF unit judges application layer degrade QoS by the local policy ruling, if then execution in step B26 consults failure otherwise the PCRF unit is defined as QoS, and finishes this handling process;
B26, PCRF unit send the QoS information that degrades to AGW;
B27, AGW judge that whether the obtainable bearer network resource of current described user satisfies the QoS that degrades, if satisfy, then sets up bearing resource by the QoS that degrades; Otherwise AGW is defined as QoS and consults failure.
When the AF unit sends the default QoS information of application layer mandate to the PCRF unit of network side, send the QoS information that degrades of application layer mandate simultaneously;
Or, the default QoS that the PCRF unit is defined as the application layer mandate is by after the local policy ruling, judges whether the application layer mandate QoS that degrades further comprises by before the local policy ruling: the information of PCRF unit QoS after the AF unit sends request and heavily consults to degrade; The AF unit sends the QoS information that degrades of application layer mandate to the PCRF unit.
Among the step B23, AGW is defined as the obtainable bearer network resource of current described user can not satisfy default QoS after, further comprise before the execution in step B24: AGW sends the information that current bearer network resource does not satisfy default QoS to the PCRF unit; The information of PCRF unit QoS after the transmission request of AF unit is heavily consulted to degrade; The AF unit sends the QoS information that degrades by the PCRF unit to AGW; The PCRF unit sends the QoS information that degrades to the AGW unit;
Or, when the AF unit sends the default QoS information of application layer mandate to the PCRF unit of network side, send the QoS information that degrades of application layer mandate simultaneously; Among the step B23, AGW is defined as the obtainable bearer network resource of current described user can not satisfy default QoS after, further comprise before the execution in step B24: AGW sends the information that current bearer network resource does not satisfy default QoS to the PCRF unit; The PCRF unit sends the QoS information that degrades to the AGW unit.
When the AF unit sends the default QoS information of application layer mandate to the PCRF unit of network side, send the QoS information that degrades of application layer mandate simultaneously; The PCRF unit judges is the default QoS of application layer mandate by after the local policy ruling, when AGW sends default QoS information, sends the QoS information that degrades to AGW simultaneously.
The PCRF unit is defined as the default QoS of application layer mandate not by after the local policy ruling, judge that whether the application layer mandate QoS that degrades further comprises by before the local policy ruling: the PCRF unit judges whether according to local policy or user signing contract information can be to the QoS processing that degrades, if, then carry out and judge whether the application layer mandate QoS that degrades passes through the step of local policy ruling, otherwise the PCRF unit is defined as QoS and consults failure, and finishes this handling process.
The expression way of the described QoS of degrading can be for: the upper limit value and the lower limit value of the concrete parameter of given every QoS or is comprised a plurality of QoS with priority or the percentage number that degrades of given every qos parameter.
This method further comprises: AF sends affirmation whether can accept the to degrade information of QoS to the user, if the user can accept, when then network side is defined as not accepting the default QoS of application layer mandate, judge whether to accept the QoS that degrades of application layer mandate again, if the user can not accept, when then network side was defined as not accepting the default QoS of application layer mandate, network side was defined as QoS and consults failure.
Further comprise before the step B: the AGW of user in network side sends the bearing resource reservation request; AGW sends the QoS authorization requests to the PCRF unit of network side;
When network side was defined as not accepting the default QoS of application layer mandate, the user resend bearing resource reservation request corresponding to the QoS that degrades to AGW.
Described PCRF unit is positioned at visited network;
Information transmission between described PCRF unit and the AF unit is undertaken by the home network PCRF unit that is positioned at home network.
The present invention allows the business of the being asked processing that degrades this user, and Internet resources can satisfy under the prerequisite of back business to the demand of resource that degrade, consult by carrying out QoS between network entities such as AF unit, PCRF unit and AGW, to the service request from user processing that degrades, and introduce again processing such as negotiation mechanism, institute's requested service is set up in the mass range that user and network can both be accepted.
The present invention has following beneficial effect:
1) the invention solves in the prior art, the current obtainable bearer network resource of user can't satisfy business that this user the asks demand to resource; The QoS that application layer is authorized fails by the local policy ruling of service network is provided for the user owing to the resource allocation reason; User place home network is inconsistent to the professional desired resource requirement of this Client-initiated with the visited network that access service is provided for the user, when causing user institute requested service situation such as not accepted and occur by visited network, the problem that directly causes the customer service failure, can improve the possibility that business that the user asks is set up in the mass range that user and network can both be accepted, and then improve customer service and be created as power.
2) in QoS negotiation of authorization process, if the default Qos that AF authorized requires to satisfy the local policy ruling that the network operator formulated of current network, or can distribute at present the discontented foot channel of bearing resource that this user uses in the bearer network and cross the qos requirement that AF and PCRF authorize the time, the present invention can make full use of current bearing resource and farthest satisfy the needs of user to business in the QoS reduction scope that user and network can both be accepted.
Description of drawings
Fig. 1 is the system schematic that realizes the QoS negotiation mechanism in the prior art under the non-roaming scene;
Fig. 2 is in the prior art, when Access Network is initiated the QoS authorization requests under the non-roaming scene, and the implementation procedure schematic diagram of QoS negotiation mechanism;
Fig. 3 is when application layer is initiated the QoS authorization requests under the non-roaming scene in the prior art, the implementation procedure schematic diagram of QoS negotiation mechanism;
Fig. 4 is the system schematic that roaming scence is realized the QoS negotiation mechanism down in the prior art;
Fig. 5 is when Access Network is initiated the QoS authorization requests under the roaming scence in the prior art, the implementation procedure schematic diagram of QoS negotiation mechanism;
Fig. 6 is when application layer is initiated the QoS authorization requests under the roaming scence in the prior art, the implementation procedure schematic diagram of QoS negotiation mechanism;
Fig. 7 is the system schematic that realizes the QoS negotiation mechanism in the embodiment of the invention under the non-roaming scene;
Fig. 8 is when Access Network is initiated the QoS authorization requests under the non-roaming scene in the embodiment of the invention, the implementation procedure schematic diagram of QoS negotiation mechanism;
Fig. 9 is when application layer is initiated the QoS authorization requests under the non-roaming scene in the embodiment of the invention, first kind of implementation procedure schematic diagram of QoS negotiation mechanism;
Figure 10 is when application layer is initiated the QoS authorization requests under the non-roaming scene in the embodiment of the invention, second kind of implementation procedure schematic diagram of QoS negotiation mechanism;
Figure 11 is the system schematic that roaming scence is realized the QoS negotiation mechanism down in the embodiment of the invention;
Figure 12 is when Access Network is initiated the QoS authorization requests under the roaming scence in the embodiment of the invention, the implementation procedure schematic diagram of QoS negotiation mechanism;
Figure 13 is when application layer is initiated the QoS authorization requests under the roaming scence in the embodiment of the invention, the implementation procedure schematic diagram of QoS negotiation mechanism.
Embodiment
Core concept of the present invention is: the user sends service request to the AF of network side; The AF of network side carries out QoS to the business of user's request and authorizes; Whether the default QoS of the PCRF unit judges application layer mandate of network side judges by the AGW of local policy ruling and network side whether the obtainable bearer network resource of active user satisfies default QoS, if then set up bearing resource for this business by default QoS; Otherwise whether the QoS that degrades of the PCRF unit judges application layer mandate of network side judges by the AGW of local policy ruling and network side whether the obtainable bearer network resource of active user satisfies the QoS that degrades, if then set up bearing resource for this business by the QoS that degrades; Otherwise network side is defined as QoS and consults failure.
Realize the system of QoS negotiation mechanism among the present invention, comprise: MS, RAN, AGW, PCRF unit, AF unit, wherein, MS is by RAN, AGW and AF unit interactive application layer information, the PCRF unit receives the default QoS information of application layer mandate that the AF unit sends, AGW receives the default QoS information of application layer mandate that the PCRF unit sends, and this system further comprises: comprise between PCRF unit and the AF unit: the annexation of the QoS information that degrades of the application layer mandate that reception AF unit, PCRF unit sends; Further comprise between PCRF unit and the AF unit: the annexation of PCRF unit information of QoS after the transmission request of AF unit is heavily consulted to degrade; Comprise between AGW and the PCRF unit: the annexation of the QoS information that degrades of the application layer mandate that AGW reception PCRF unit sends; Further comprise between AGW and the PCRF unit: AGW sends the annexation that the bearer network resource does not satisfy the information of having authorized default QoS to the PCRF unit.
Clear in order to narrate among the present invention, the QoS that will occur in QoS negotiation mechanism technical scheme of the present invention is divided into default QoS and the QoS that degrades.Both differences are:
Described default QoS is meant: in the Internet resources abundance, and the local policy ruling is under the hard-core situation of QoS, and application layer is the qos requirement of application layer first-selection to the qos requirement of business acquiescence.
The described QoS of degrading is meant: in the Internet resources deficiency, or the local policy ruling is to reason such as QoS is restricted, cause under the situation that can't satisfy the default qos requirement of application layer, the application layer acceptable is lower than the qos requirement of default qos parameter performance index, is the qos requirement of application level choosing.
Described Internet resources comprise: bearing resource, signaling transport layer resource also comprise the disposal ability of each entities such as network transmission layer face, signaling process aspect etc.Described bearing resource is meant the resource of transportation level.
When the user initiates service request, there are two kinds of methods to realize the bearing resource of initiation service needed is carried out the QoS negotiation of authorization.
A kind of method is that the user passes through to reserve this professional needed bearing resource to the AGW application, and the PCRF of AGW in network, and the AF application is authorized approval to reserved resource that the user applies for.AGW according to carrying out resource allocation through the QoS information of authorizing approval, obtains enough bearing resource to guarantee the business that the user was initiated according to the obtainable resource situation of current this user.
Another kind method is will be through the professional needed QoS resource of the Client-initiated of application layer mandate by AF, send to PCRF and carry out tactful ruling, and will inform AGW through the QoS result of PCRF ruling, AGW then carries out resource allocation according to the obtainable resource situation of current this user according to this QoS information, obtains enough bearing resources to guarantee the business that the user was initiated.
AGW can utilize prior art to know current this user's available resource situation, such as: according to current bearer network resource situation and user profile, and pre-set resource allocation policy is determined this user operable resource situation etc. in bearer network among the AGW.
In QoS negotiation of authorization process, if the default Qos that AF authorized requires to satisfy the local policy ruling that the network operator formulated of current network, or can distribute at present the discontented foot channel of bearer network resource that this user uses in the bearer network and cross the qos requirement that AF and PCRF authorize the time, the present invention can make full use of current bearer network resource and farthest satisfy the needs of user to business in the QoS reduction scope that user and network can both be accepted.
The described QoS of degrading information can be used as a kind of subscription data, be stored in the network such as in home subscriber server (HSS), the authentication and authorization charging customer service subscribed databases such as (AAA), also can be stored in service application layer, in the AS that business is provided for the user, can also directly be stored among the network element PCRF that carries out the ruling of QoS local policy.
The QoS information that degrades among the present invention also can determine according to carrier policy, and operator's configured in advance in AF QoS information that degrades normally, and determine can provide the service of degrading to all users at this moment, all is the same to the degrade setting of QoS of all users.
QoS described in the present invention degrade the expression way of information can have multiple, such as codomain mode or tabulation mode or percentage mode etc., specifically can be as shown in Table 1.
The degrade expression way of information of QoS Explanation
The codomain mode The mode of the upper and lower bound value of the concrete parameter of given every QoS
The tabulation mode To QoS demand and Freight Basis, the user signs a QoS tabulation with priority according to business, and each in this tabulation is a kind of compound mode of every QoS parameter information.When the QoS of limit priority can not be met, can select according to the order from high to low of the priority in this tabulation
The percentage mode The mode of the percentage number that degrades of given every qos parameter.Such as: by bandwidth be reduced to former bandwidth value 80%, postpone to increase to former delay
Value 120%, the shake time increases to the mode such as 110% of former shake time, can set the acceptable percentage range that degrades to every qos parameter
Table one
Following with reference to the accompanying drawing embodiment that develops simultaneously, the present invention is described in more detail.
Fig. 7 is the system schematic that realizes the QoS negotiation mechanism in the embodiment of the invention under the non-roaming scene, this system comprises: MS11, RAN12, AGW71, PCRF72, AF73, wherein AGW72 comprises: Signalling exchange unit 711, default QoS processing unit 712, bearer network rm-cell 713, QoS processing unit 714 degrades, PCRF72 comprises: Signalling exchange unit 721, default QoS processing unit 722, local policy unit 723, QoS processing unit 724 degrades, can also comprise: CAMEL-Subscription-Information unit 725, AF73 comprises: Signalling exchange unit 731, QoS translation unit 732, default QoS processing unit 733, the QoS processing unit 734 that degrades, AF73 can also comprise: CAMEL-Subscription-Information unit 735.
MS11 is by the Signalling exchange unit 711 among RAN12, the AGW71, with the Signalling exchange unit 731 interactive application layer information among the AF73, also by the Signalling exchange unit 711 mutual relevant resource informations of setting up among RAN12 and the AGW71.
RAN12 in order to transmitting the information between the Signalling exchange unit 711 among MS11 and the AGW71, and sets up Radio Link carrying connection for the user.
Signalling exchange unit 711 among the AGW71 by the mutual relevant resource information of setting up of RAN12 and MS11, transmits MS11 by mutual application layer message between the Signalling exchange unit 731 among RAN12 and the AF73; After the default QoS information of the application layer mandate that the Signalling exchange unit 721 among the reception PCRF72 sends, be transmitted to default QoS processing unit 712, the bearer network resource that receives default QoS processing unit 712 transmissions satisfies or exceeds or do not exceed the information of the default QoS of application layer mandate; After the QoS information that degrades of the application layer mandate that the Signalling exchange unit 721 among the reception PCRF72 sends, be transmitted to the Signalling exchange unit 711 among the QoS processing unit 714.AGW71 that degrades, whether the bearer network resource that can also receive QoS processing unit 714 transmissions that degrade satisfies or exceeds the information of the QoS that degrades of application layer mandate; Can also send the QoS authorization requests in the Signalling exchange unit 721 in PCRF72; Can also send the information that the bearer network resource does not satisfy the default QoS of application layer mandate in the Signalling exchange unit 721 in PCRF72.
Default QoS processing unit 712 among the AGW71, after the default QoS information of the application layer mandate that reception Signalling exchange unit 711 sends, be transmitted to bearer network rm-cell 713, after receiving bearer network resource that bearer network rm-cell 713 sends and satisfying or exceed or do not exceed the information of default QoS of application layer mandate, be transmitted to Signalling exchange unit 711.
Bearer network rm-cell 713 among the AGW71, receive the default QoS information of the application layer mandate of default QoS processing unit 712 transmissions, carry out the judgement whether the bearer network resource satisfies or exceed the default QoS of application layer mandate, return the information that the bearer network resource satisfies or exceed or do not exceed the default QoS of application layer mandate to default QoS processing unit 712; QoS processing unit 714 sends the information that the bearer network resource does not satisfy the default QoS of application layer mandate to degrading, the degrade QoS information that degrades of the application layer mandate that QoS processing unit 714 sends of reception, carry out the judgement whether the bearer network resource satisfies or exceed the QoS that degrades of application layer mandate, return the information whether the bearer network resource satisfies or exceed the QoS that degrades of application layer mandate to the QoS processing unit 714 that degrades.
The QoS processing unit 714 that degrades among the AGW71, receive the QoS information that degrades of the application layer mandate of Signalling exchange unit 711 transmissions, the bearer network resource that receives 713 transmissions of bearer network rm-cell does not satisfy the information of the default QoS of application layer mandate, sends the QoS information that degrades to bearer network rm-cell 713; After receiving bearer network resource that bearer network rm-cell 713 sends and whether satisfying or exceed the information of the QoS that degrades of application layer mandate, be transmitted to Signalling exchange unit 711.
Whether described bearer network resource satisfies or exceeds in the judgement of default QoS of application layer mandate, if initiating QoS, consults Access Network, then AGW71 carries out the judgement whether the bearer network resource exceeds the default QoS of application layer mandate, consult if application layer is initiated QoS, then AGW71 carries out the judgement whether the bearer network resource satisfies the default QoS of application layer mandate; Whether described bearer network resource satisfies or exceeds in the judgement of the QoS that degrades of application layer mandate, if initiating QoS, consults Access Network, then AGW71 carries out the judgement whether the bearer network resource exceeds the QoS that degrades of application layer mandate, consult if application layer is initiated QoS, then AGW71 carries out the judgement whether the bearer network resource satisfies the QoS that degrades of application layer mandate.
Signalling exchange unit 721 among the PCRF72, receive the default QoS information of the application layer mandate of Signalling exchange unit 731 transmissions among the AF73, send the default QoS information of application layer mandate to default QoS processing unit 722, receive the default QoS of application layer mandate that default QoS processing unit 722 the returns information by the local policy ruling, the Signalling exchange unit 711 in AGW sends the default QoS information of application layer mandates; After the QoS information that degrades of the application layer mandate that the Signalling exchange unit 731 among the reception AF73 sends, be transmitted to the QoS processing unit 724 that degrades; Reception application layer mandate that QoS processing unit 724 sends the whether information by the local policy ruling of QoS that degrades that degrades, the Signalling exchange unit 711 in AGW send the application layer mandates QoS information that degrades.Signalling exchange unit 721 among the PCRF72 can also receive the QoS authorization requests that the Signalling exchange unit 711 among the AGW sends, and can also the Signalling exchange unit 731 in AF73 sends the information of the default QoS of request application layer mandates; Signalling exchange unit 731 that can also be in AF73 sends the information of the QoS after request is heavily consulted to degrade.
Default QoS processing unit 722 among the PCRF72, after receiving the default QoS information of application layer mandate of Signalling exchange unit 721 transmissions, be transmitted to local policy unit 723, the default QoS of application layer mandate that receives 723 transmissions of local policy unit is transmitted to Signalling exchange unit 721 by after the information of local policy ruling.
Local policy unit 723 among the PCRF72, receive the default QoS information of application layer mandate that default QoS processing unit 722 sends, carry out the judgement whether default QoS of application layer mandate passes through the local policy ruling, return the information of the default QoS of application layer mandate to default QoS processing unit 722 by the local policy ruling, QoS processing unit 724 sends the information that the default QoS of application layer mandate does not pass through the local policy ruling to degrading, the degrade QoS information that degrades of the application layer mandate that QoS processing unit 724 sends of reception, carry out the application layer mandate whether judgement by the local policy ruling of QoS that degrades, return the application layer mandate whether information by the local policy ruling of QoS that degrades to the QoS processing unit 724 that degrades.
Described local policy unit 723 can comprise storage local policy database; Also can comprise and obtain the local policy interface, and obtain local policy by the database interactive information of this interface and PCRF72 exterior storage local policy.
The QoS processing unit 724 that degrades among the PCRF72, receive the QoS information that degrades of the application layer mandate of Signalling exchange unit 721 transmissions, the default QoS of application layer mandate that receives 723 transmissions of local policy unit sends the QoS information that degrades by the information of local policy ruling to local policy unit 723; Whether the application layer mandate that receives 723 transmissions of local policy unit degrades QoS by after the information of local policy ruling, is transmitted to Signalling exchange unit 721.The QoS processing unit 724 that degrades among the PCRF72 can also send the degrade message of QoS information of inquiring users to CAMEL-Subscription-Information unit 725, receives the user who the returns CAMEL-Subscription-Information unit 725 QoS information that degrades; Can also send the inquiring users information of QoS of degrading of whether having contracted to CAMEL-Subscription-Information unit 725, receive the user who returns CAMEL-Subscription-Information unit 725 information of QoS of degrading of whether having contracted.
Whether the CAMEL-Subscription-Information unit 725 among the PCRF72 is a selectable unit, be used to receive degrade inquiring user that QoS processing unit 724 sends and contracted and degrade after the message of QoS, returns user's information of QoS of degrading of whether having contracted to the QoS processing unit 724 that degrades; Degrade inquiring user that QoS processing unit 724 sends of reception degrades after the message of QoS information, returns user's the QoS information that degrades to the QoS processing unit 724 that degrades.
CAMEL-Subscription-Information unit 725, can be the CAMEL-Subscription-Information database of storing user subscription information, also can be for obtaining the interface of user signing contract information, and the HSS by this interface and storing user subscription information or interactive information such as AAA or AS are obtained user's information of QoS of degrading of whether having contracted.
Signalling exchange unit 731 among the AF73 is by the Signalling exchange unit 711 among the AGW71, RAN12 and MS11 interactive application layer information; Send the application layer message that MS11 send to QoS translation unit 732, receive the default QoS information of the application layer mandate that default QoS processing unit 733 sends after, be transmitted to the Signalling exchange unit 721 among the PCRF72; Reception degrades after the QoS information that degrades of the application layer mandate that QoS processing unit 734 sends, and is transmitted to the Signalling exchange unit 721 among the PCRF72.Signalling exchange unit 731 among the AF73, can also receive the default QoS information of the request application layer mandate of Signalling exchange unit 721 transmissions among the PCRF72, after the information of QoS after can also receiving request that the Signalling exchange unit 721 among the PCRF72 sends and heavily consulting to degrade, QoS processing unit 734 is transmitted to degrading; Can also send the inquiring users information of QoS of degrading of whether having contracted to CAMEL-Subscription-Information unit 735, can also receive the user who returns CAMEL-Subscription-Information unit 735 information of QoS of degrading of whether having contracted, can also send users' information of QoS of degrading of having contracted to QoS translation unit 732.
QoS translation unit 732 among the AF73 translates default QoS information behind the application layer message that the MS11 that reception Signalling exchange unit 731 sends sends, and sends default QoS information to default QoS processing unit 733.QoS translation unit 732 among the AF73, can also receive user that Signalling exchange unit 731 the sends information of QoS of degrading of having contracted, and after translating the QoS information that degrades according to the application layer message that the MS11 that Signalling exchange unit 731 sends sends, QoS processing unit 734 sends the QoS information that degrades to degrading.
Default QoS processing unit 733 among the AF73 receives the default QoS information that QoS translation unit 732 sends, and default QoS information is authorized, and sends the default QoS information of application layer mandate to Signalling exchange unit 731.
The QoS processing unit 734 that degrades among the AF73, in order to the QoS that degrades is authorized, the QoS processing unit 734 that degrades in the QoS information .AF73 that degrades of Signalling exchange unit 731 transmission application layer mandates can also receive the QoS information that degrades that QoS translation unit 732 sends; After the information of QoS after also can receiving request that the signaling religion household unit 721 among the PCRF72 that transmits Signalling exchange unit 731 sends and heavily consulting to degrade, send the inquiring users message of QoS CAMEL-Subscription-Information that degrades to CAMEL-Subscription-Information unit 735, and receive the user who the returns CAMEL-Subscription-Information unit 735 QoS CAMEL-Subscription-Information that degrades.
CAMEL-Subscription-Information unit 735 among the AF73 is a selectable unit, can receive the degrade message of QoS CAMEL-Subscription-Information of inquiring user that the QoS processing unit 734 of degrading sends, and returns the degrade CAMEL-Subscription-Information of QoS of user to the QoS processing unit 734 that degrades; Also can receive inquiring user that Signalling exchange unit 731 the sends information of QoS of degrading of whether having contracted, and return user's information of QoS of degrading of whether having contracted to Signalling exchange unit 731.
CAMEL-Subscription-Information unit 735 can be the CAMEL-Subscription-Information database of storing user subscription information, also can be for obtaining the CAMEL-Subscription-Information interface, and the HSS by this interface and storing user subscription information or interactive information such as AAA or AS are obtained the degrade CAMEL-Subscription-Information of QoS of user.
Among Fig. 7, whether the bearer network resource satisfies or the information that exceeds QoS belongs to the QoS state information; Whether QoS also belongs to the QoS state information by the information of local policy ruling.
Fig. 8 is in the present embodiment, the implementation procedure schematic diagram of QoS negotiation mechanism when the default QoS of Access Network initiation QoS authorization requests and application layer mandate is by the local policy ruling under the non-roaming scene of user, and this process comprises following steps:
It is mutual to carry out application layer message between step 801～step 802:MS and the AF; MS reserves bearing resource to the AGW request.
Described step 801～step 802 is concrete identical with step 201～step 202.
Step 803:AGW sends the QoS authorization requests to PCRF.
Described step 803 is concrete identical with step 203.
Step 804:PCRF is to the QoS of AF request application layer mandate.
Described step 804 is concrete identical with step 204.
Step 805:AF sends the default QoS of application layer mandate to PCRF.
Described step 805 is specially: the information content of entrained user profile and this service conversation in the QoS authorized application request of AF according to PCRF, find in the application layer about this professional information of this user, with the default QoS information of application layer, and the default QoS information of this application layer mandate returned to PCRF to this service authorization.
During practical application, step 805 can be carried out after step 804 as shown in Figure 8, also can carry out the optional position between step 801 and step 803.When step 805 is carried out between step 801 and step 803, execution in step 804 not among Fig. 8, and described step 805 is specially: AF will send to PCRF and carry out the local policy ruling through the default QoS of application layer mandate.
In the step 805, when AF sends the QoS of application layer mandate to PCRF, the QoS that degrades of this business that also can send AF simultaneously and allowed.The described QoS of degrading information is used to indicate PCRF, if the tactful ruling that the default QoS that AF authorized can not be by PCRF, or local bearer network resource is when satisfying the default QoS that authorized to the requiring of resource, can be according to this QoS that degrades processing that degrades.The expression way of this QoS that degrades can be as shown in Table 1.
In the step 805, AF can be by obtaining the QoS information that degrades with storage user's the HSS of the QoS subscription data that degrades or AAA or AS interactive information.In the step 805, AF also can be according to the operation strategy QoS information of determining to degrade, normally operator in AF configured in advance the QoS information that degrades.
The default QoS that step 806:PCRF is defined as the application layer mandate fails by the local policy ruling.
Described step 806 is specially: after PCRF receives the default QoS information of this service application layer mandate that AF sends, merging local policy this default QoS is carried out the local policy ruling. the default QoS that application layer is authorized this business has exceeded the QoS scope that local policy allowed, and then PCRF thinks that this business can not use the local network resource according to the default QoS that application layer is authorized.
If the QoS that degrades of this business that has carried application layer in the step 805 and allowed, then PCRF can promptly carry out the local policy ruling according to the QoS that degrades according to this QoS that degrades processing that degrades.QoS meets the requirement of local policy if degrade, PCRF then thinks and can set up this business to the needs of resource according to the QoS that degrades, and after carrying out this step, execution in step 809, QoS does not meet the requirement of local policy if degrade, then PCRF is defined as QoS and consults failure, and finishes this handling process.
If the QoS that degrades of this business of not carrying application layer in the step 805 and being allowed, then after this step, execution in step 807.If degrading during QoS of this business of not carrying application layer in the step 805 and being allowed, after this step, before the execution in step 807, can further comprise: PCRF is according to local policy or user's CAMEL-Subscription-Information, be defined as step that this professional QoS is degraded and handles, in this step: PCRF learns that default QoS fails by after the local policy ruling, and according to local policy or user's CAMEL-Subscription-Information, judging whether can be to this professional QoS processing that degrades.Here, if PCRF know HSS or AAA or AS or self stored user's the QoS subscription data that degrades, then can be defined as the processing that degrades to this professional QoS; Though if the signatory QoS data that degrade of user, the local policy of PCRF allows to carry out the QoS processing that degrades, then also be defined as the processing that degrades to this professional QoS.Described PCRF is known HSS or AAA or AS or self whether has been stored user's the QoS subscription data that degrades, can be to know by AF and HSS or interactive information such as AAA or AS, also can PCRF directly with know with interactive information such as HSS or AAA or AS.
The QoS of step 807:PCRF after the AF request is heavily consulted to degrade.
Described step 807 is specially: PCRF heavily consults this professional QoS information to the AF request, i.e. the QoS that degrades that authorizes to AF application application layer.
Step 808:AF sends the QoS that degrades of application layer mandate to PCRF.
Described step 808 is the response message of step 807, and specifically: AF returns the QoS that degrades that application layer allows to PCRF after receiving that the QoS from PCRF heavily consults request.
The QoS that degrades that described AF sends to PCRF, as shown in Table 1 all that can contract for the user or operator allows QoS that degrades, also can be for AF according to user's CAMEL-Subscription-Information and application layer to this professional desired minimum QoS restriction, the suitable QoS that degrades of selection.Here, AF can determine application layer to this professional desired minimum QoS restriction according to information such as service attributes usually, and AF selects the distinct methods of the suitable QoS that degrades not influence the present invention program's enforcement.
Step 809:PCRF sends the QoS that degrades that authorizes to AGW.
Described step 809 is specially: the QoS that degrades that PCRF is defined as receiving passes through the local policy ruling, and will send to AGW by the QoS information that degrades of local policy ruling, and indication AGW carries for this professional foundation of user according to this QoS that degrades and connects.In the step 809, PCRF sends by the degrading during QoS information of local policy ruling to AGW, and as shown in Table 1 all that also user can be contracted or operator allows send to AGW when degrading the QoS information of same.Usually, PCRF sends to AGW after the QoS that degrades of application layer mandate is converted to AGW form to understand.
Here, if the QoS that degrades that PCRF receives still can not satisfy local policy, then PCRF handles by failure, and finishes this handling process.
Step 810:AGW is defined as the obtainable bearer network resource of current this user in the QoS scope that degrades of having authorized.
Described step 810 is specially: after AGW receives the QoS that degrades from PCRF, the QoS that the application layer mandate can be degraded compares to the QoS that self applies for the user, if the user is in the degrade QoS scope of QoS in the application layer mandate of self asking, the QoS that then accepts the user and asked, if and connect for this business of this user provides bearing resource by this QoS that degrades. the QoS that the user asked has exceeded the QoS that degrades of application layer mandate, then AGW is defined as need discharging unnecessary reserved resource, and provides bearing resource to connect by the QoS that degrades of application layer mandate for this business of this user.
Comprise optional step 811～step 812 among Fig. 8, returned the message of the QoS that confirms to degrade in order to AGW to AF.
Step 811:AGW returns affirmation message to the QoS that degrades to PCRF.
Step 812:PCRF is to AF send to confirm the to degrade message of QoS.
In the step 812, PCRF is notified to AF with the QoS information of being accepted that degrades after receiving the affirmation message to the QoS that degrades from AGW.
Step 813:AGW notifies this professional resource needed link of MS of user to set up.
During practical application, step 813 can be carried out after step 812 as shown in Figure 8, also can carry out the optional position after step 810.
After the step 813, user's MS and the media stream links between the opposite end can successfully be set up, and the business that the user initiated can begin to carry out.
Need to prove that if in the step 806 shown in Figure 8, PCRF is defined as the default QoS of application layer mandate by the local policy ruling, then execution in step 809, and in step 809, PCRF issues the default QoS of application layer mandate to AGW.Accordingly, judge the obtainable bearer network resource of current this user in the step 810 whether in the default QoS scope of having authorized, if not, then AGW is defined as QoS and consults failure, and finishes this handling process; Otherwise carry out optional step 811 or direct execution in step 813, and will send the message of confirming default QoS in step 811～step 812.
Fig. 9 is in the present embodiment, and under the non-roaming scene of user, application layer is initiated the QoS authorization requests, the implementation procedure schematic diagram of QoS negotiation mechanism when application layer mandate QoS does not pass through the local policy ruling, and this process comprises following steps:
Step 901: identical with step 801.
Step 902:AF sends the default QoS of application layer mandate to PCRF.
In the step 902, AF will send to PCRF and carry out the local policy ruling through the default QoS of application layer mandate.In the step 902, when AF sends the QoS of application layer mandate to PCRF, the QoS that degrades of this business that also can send AF simultaneously and allowed.The described QoS of degrading information is used to indicate PCRF, if the tactful ruling that the default QoS that AF authorized can not be by PCRF, or local bearer network resource is when satisfying the default QoS that authorized to the requiring of resource, can be according to this QoS that degrades processing that degrades.The expression way of this QoS that degrades can be as shown in Table 1.AF obtains the process of the QoS that degrades with identical described in the step 805.
Step 903～step 906: identical with step 806～step 809.
Step 907:AGW is defined as the obtainable bearer network resource of current this user and satisfies the QoS that degrades that has authorized.
Described step 907 is specially: AGW judges whether the obtainable bearer network resource situation of current this user can satisfy this requirement of QoS to resource that degrade after receiving the QoS that degrades from PCRF.If the obtainable bearer network resource of current this user can satisfy the QoS that degrades, then come to provide bearing resource to connect for this business of this user according to this QoS that degrades, consult failure otherwise AGW is defined as QoS, and finish this handling process.
Here, if PCRF has only sent by the QoS that degrades by the local policy ruling to AGW in step 906, then the AGW QoS that only this degraded compares to the QoS that self applies for the user in the step 907; If PCRF has sent all QoS that degrade that application layer allowed to AGW in the step 906, then because the described QoS of degrading can be one group of QoS that degrades as described in table one, such as: comprise a plurality of QoS, and one group of QoS that degrades with priority, therefore, the obtainable bearer network resource of current this user can not satisfy by the degrading during qos requirement of local tactful ruling in the step 907, and AGW can carry out the obtainable bearer network resource of current this user according to one of them QoS that degrades of the Information Selection such as priority among all the other QoS that degrade and whether satisfy this judgement of QoS to the requirement of resource that degrade.
Step 908～910: identical with step 811～step 813.
Described step 908～step 909 is an optional step.
After the execution in step 910, user's MS and the media stream links between the opposite end can successfully be set up, and the business that the user initiated can begin to carry out.
Need to prove that if in the step 903 shown in Figure 9, PCRF is defined as the default QoS of application layer mandate by the local policy ruling, then execution in step 906, and in step 906, PCRF issues the default QoS of application layer mandate to AGW.Accordingly, judge in the step 907 whether the obtainable bearer network resource of current this user satisfies the default QoS that has authorized, if not, then AGW is defined as QoS and consults failure, and finishes this handling process; Otherwise carry out optional step 908 or direct execution in step 910, and will send the message of confirming default QoS in step 908～step 909.
Figure 10 is in the present embodiment, and under the non-roaming scene of user, application layer is initiated the QoS authorization requests, the implementation procedure schematic diagram of QoS negotiation mechanism when current network resources can not satisfy qos requirement, and this process comprises following steps:
Step 1001～step 1002: identical with step 901～step 902.
Step 1003:PCRF is defined as the default QoS of application layer mandate by the local policy ruling.
Described step 1003 is specially: after PCRF receives the default QoS information of this service application layer mandate that AF sends, merge local policy this default QoS is carried out the local policy ruling.If the default QoS that application layer is authorized this business is in the QoS scope that local policy allowed, then PCRF thinks that this business can use the local network resource according to the default QoS that application layer is authorized.
If the QoS that degrades of this business that has carried application layer in the step 1002 and allowed, then PCRF can preserve this QoS information that degrades and uses in order to subsequent treatment.
Step 1004:PCRF sends the default QoS information of the application layer mandate of passing through the local policy ruling to AGW.
If in step 1002, the QoS that degrades that PCRF receives application layer there and allowed from AF, the QoS that then this can be degraded in the step 1004 is handed down to AGW together.
Step 1005:AGW is defined as the obtainable bearer network resource of current this user can not satisfy the default QoS that has authorized.
Described step 1005 is specially: AGW judges whether the obtainable bearer network resource of current this user can satisfy the requirement of the default QoS information of this mandate to resource after receiving default QoS information from the application layer mandate of passing through the local policy ruling of PCRF.When the obtainable bearer network resource of current this user can not satisfy the default qos requirement of being authorized, if AGW fails to obtain the QoS that degrades that application layer allowed from PCRF in the step 1004, then after this step, execution in step 1006; If AGW has obtained the QoS that degrades that application layer allowed from PCRF in the step 1004, and the obtainable bearer network resource of current this user can satisfy this QoS that degrades to the requirement of resource, then after this step, and direct execution in step 1011.
AGW is from degrading during QoS that PCRF has obtained that application layer allowed in the step 1004, because the described QoS of degrading can be one group of QoS that degrades as described in table one, such as: the one group of QoS that degrades that comprises a plurality of QoS and have priority, therefore, when the obtainable bearer network resource of current this user can not satisfy the default qos requirement of being authorized in the step 1005, AGW can select one of them QoS that degrades to carry out the obtainable bearer network resource of current this user according to the priority among this QoS that degrades whether to satisfy this judgement of QoS to the requirement of resource that degrade.
Current this user of step 1006:AGW notice PCRF can obtain the bearer network resource and can not satisfy and authorized default QoS.
Step 1006 shows that to PCRF default QoS can not be accepted by bearer network in order to AGW.
Step 1007:PCRF is according to local policy or user's CAMEL-Subscription-Information, is defined as the processing that degrades to this professional QoS.
Whether in the step 1007, PCRF learns when default QoS is not accepted by AGW, judges the CAMEL-Subscription-Information according to local policy or user, can be to this professional QoS processing that degrades.Here, if PCRF know HSS or AAA or AS or self stored user's the QoS subscription data that degrades, then can be defined as the processing that degrades to this professional QoS; Though if the signatory QoS data that degrade of user, the local policy of PCRF allows to carry out the QoS processing that degrades, then also be defined as the processing that degrades to this professional QoS.Described PCRF is known HSS or AAA or AS or self whether has been stored user's the QoS subscription data that degrades, can be to know by AF and HSS or interactive information such as AAA or AS, also can PCRF directly with know with interactive information such as HSS or AAA or AS.
If in the step 1002, PCRF is from the AF QoS information that obtained to degrade, then after this step, and direct execution in step 1010, otherwise after this step, execution in step 1008.
Step 1008～step 1014: identical with step 904～step 910.
Need to prove, if in the step 1005 shown in Figure 10, PCRF is defined as the default QoS of application layer mandate by the local policy ruling, then carries out optional step 1012 or direct execution in step 1014, and in step 1012～step 1013, send the message of confirming default QoS.
In the step 1003 shown in Figure 10, when PCRF is defined as the default QoS of application layer mandate not by the local policy ruling, can handle with reference to the correlation step among Fig. 9.At this moment, if in the step 1005, the obtainable bearer network resource of current this user can not satisfy degrading during QoS of having authorized, AGW also can be in an AF and the acceptable scope that degrades of PCRF to the QoS that the degrades processing that further degrades, similar among the process handled of further degrading and Figure 10 to the degrade process of processing of default QoS, be not described in detail in this.
In the step 1005, satisfy the default QoS that has authorized, then carry out optional step 1012 or direct execution in step 1014, and will send the message of confirming default QoS in step 1012～step 1013 if AGW is defined as the obtainable bearer network resource of current this user.
Step 1006 among Figure 10～step 1010 also can be applied among Fig. 9, specifically: if in the step 906 shown in Figure 9, PCRF has only sent application layer mandate and the QoS that degrades by the ruling of PCRF local policy to AGW, send to AGW during all QoS information of same that the user is not contracted or operator allows, if then the obtainable bearer network resource of current this user does not satisfy the QoS that degrades by the ruling of PCRF local policy in the step 907, then AGW can be with reference to the processing that further degrades of step 1006～step 1010 among Figure 10.
Under the user is in roaming scence, for providing the AGW of Access Network service, the user is positioned at visited network, and the PCRF that this AGW connected also is in visited network, and the PCRF that will be in visited network is labeled as VPCRF; The PCRF that is positioned at the user attaching network is called HPCRF.The QoS negotiation mechanism under roaming scence and the difference under the non-roaming scene be that mainly HPCRF is responsible for transmitting the information between AF and the VPCRF, and because VPCRF is positioned at the visited network that the carrying Connection Service is provided for the user, understand the resource operating position of access network more than the HPCRF that is positioned at home network, so the function of being finished by PCRF that comprises local policy ruling etc. is finished by VPCRF under non-roaming scene.
Figure 11 is the system schematic that roaming scence is realized the QoS negotiation mechanism down in the embodiment of the invention, this system comprises: MS11, RAN12, AGW71, VPCRF111, HPCRF112, AF73, wherein, PCRF72 among VPCRF111 and Fig. 7 is basic identical, is that Signalling exchange unit 1111 among the VPCRF111 shown in Figure 11 is connected with Signalling exchange unit 731 among the AF73 by the Signalling exchange unit 1121 among the HPCRF112; Basic identical among MS11, RAN12, AGW71, AF73 and Fig. 7, just among Figure 11, Signalling exchange unit 711 among the AGW71 is connected with Signalling exchange unit 1111 among the VPCRF111, and the Signalling exchange unit 731 among the AF73 comprises by the .HPCRF112 that is connected with Signalling exchange unit 1111 among the VPCRF111 of the Signalling exchange unit 1121 among the HPCRF112: Signalling exchange unit 1121.
Signalling exchange unit 1121 among the HPCRF112, the default QoS information of the application layer mandate that the Signalling exchange unit 731 among the reception AF73 sends is transmitted to the Signalling exchange unit 1111 among the VPCRF111; The QoS authorization requests that the Signalling exchange unit 1111 among the VPCRF111 sends can also be received, the information of the QoS of request application layer mandates can also be the Signalling exchange unit 731 in AF73 sent.Signalling exchange unit 1121 can also receive the QoS information that degrades of the application layer mandate that the Signalling exchange unit 731 among the AF73 sends, and is transmitted to the Signalling exchange unit 1111 among the VPCRF111; Can also transmit the information of the relevant QoS that heavily consults to degrade between the Signalling exchange unit 731 among Signalling exchange unit 1111 and the AF73 among the VPCRF111.
Figure 12 is in the present embodiment, the implementation procedure schematic diagram of QoS negotiation mechanism when the default QoS of Access Network initiation QoS authorization requests and application layer mandate is by the local policy ruling when the user is in roaming scence, and this process comprises following steps:
It is mutual to carry out application layer message between step 1201～step 1202:MS and the AF; MS reserves bearing resource to the AGW request.
Step 1201～step 1202 is concrete identical with step 501～step 502.
Step 1203:AGW sends the QoS authorization requests to VPCRF.
Described step 1203 is concrete identical with step 503.
Step 1204:VPCRF transmits the QoS authorization requests to HPCRF.
Described step 1204 is concrete identical with step 504.
Step 1205:HPCRF is to the QoS of AF request application layer mandate.
Described step 1205 is concrete identical with step 505.
Step 1206:AF sends the default QoS of application layer mandate to HPCRF.
Specifically: the information content of entrained user profile and this service conversation in the QoS authorized application request of AF according to HPCRF, find in the application layer about this professional information of this user, with the default QoS information of application layer, and the default QoS information of this application layer mandate returned to HPCRF to this service authorization.
During practical application, step 1206 can be carried out after step 1205 as shown in figure 12, also can carry out the optional position between step 1201 and step 1204.When step 1206 is carried out between step 1201 and step 1204, execution in step 1205 not among Figure 12, and described step 1206 is specially: AF will send to HPCRF and carry out the local policy ruling through the default QoS of application layer mandate, and comprise the information of the visited network VPCRF that is used for definite active user place.
In the step 1206, when AF sends the QoS of application layer mandate to HPCRF, the QoS that degrades of this business that also can send AF simultaneously and allowed.The described QoS of degrading information is used to indicate HPCRF, if the default QoS that AF authorized can not pass through the local policy ruling, or local bearer network resource is when satisfying the default QoS authorized to the requiring of resource, can be according to this QoS that degrades processing that degrades.The expression way of this QoS that degrades is as described in the table one.
In the step 1206, identical in the process that AF obtains the QoS that degrades and the step 805.
Step 1207:HPCRF transmits the default QoS of application layer mandate to VPCRF.
In the step 1207, if HPCRF receives the QoS that degrades that application layer allowed from AF in the step 1206, then the HPCRF QoS that also this degraded sends to VPCRF.
The default QoS that step 1208:VPCRF is defined as the application layer mandate fails by the local policy ruling.
Specifically: after VPCRF received the default QoS of this service application layer mandate that HPCRF transmits, the local policy that merges visited network carried out the local policy ruling to this default QoS.The default QoS that application layer is authorized this business has exceeded the QoS scope that local policy allowed, and then VPCRF thinks that this business can not use the local network resource according to the default QoS that application layer is authorized.
If the HPCRF QoS that will degrade sends to VPCRF in the step 1207, then VPCRF can promptly carry out the local policy ruling according to the QoS that degrades according to this QoS that degrades processing that degrades.QoS meets the requirement of local policy if degrade, VPCRF can set up this business to the needs of resource according to the QoS that degrades with regard to thinking, and after carrying out this step, execution in step 1213, QoS does not meet the requirement of local policy if degrade, then VPCRF is defined as QoS and consults failure, and finishes this handling process.
If the QoS that degrades of this business of not carrying application layer in the step 1207 and being allowed, then after this step, execution in step 1209.If degrading during QoS of this business of not carrying application layer in the step 1207 and being allowed, after this step, can further comprise before the execution in step 1209: VPCRF is according to local policy or user's CAMEL-Subscription-Information, be defined as step that this professional QoS is degraded and handles, in this step: VPCRF learns when default QoS is not accepted by AGW, whether judgement is according to local policy or user's CAMEL-Subscription-Information, can be to this professional QoS processing that degrades.Here, if VPCRF know HSS or AAA or AS or self stored user's the QoS subscription data that degrades, then can be defined as the processing that degrades to this professional QoS; Though if the signatory QoS data that degrade of user, the local policy of VPCRF allows to carry out the QoS processing that degrades, then also be defined as the processing that degrades to this professional QoS.Described VPCRF is known HSS or AAA or AS or self whether has been stored user's the QoS subscription data that degrades, can be to know by AF and HSS or interactive information such as AAA or AS, also can VPCRF directly with know with interactive information such as HSS or AAA or AS.
The QoS of step 1209:VPCRF after the HPCRF request is heavily consulted to degrade.
The heavily negotiation request that step 1210:HPCRF will receive is transmitted to AF.
Step 1209～step 1210 is heavily consulted this professional QoS information by HPCRF to the AF request in order to VPCRF, i.e. the QoS that degrades that authorizes to AF application application layer.
Step 1211:AF sends the QoS that degrades of application layer mandate to HPCRF.
Described step 1211 is the response message of step 1210, and specifically: AF returns the QoS that degrades that application layer allows to HPCRF after receiving that the QoS from HPCRF heavily consults request.
The QoS that degrades that described AF sends to HPCRF, as shown in Table 1 all that can contract for the user or operator allows QoS that degrades, also can be for AF according to user's CAMEL-Subscription-Information and application layer to this professional desired minimum QoS restriction, the suitable QoS that degrades of selection.Here, AF can determine that application layer is to this professional desired minimum QoS restriction according to information such as service attributes usually; AF selects the distinct methods of the suitable QoS that degrades not influence the present invention program's enforcement.
The step 1212:HPCRF QoS that will degrade sends to VPCRF.
In the step 1212, HPCRF can be transmitted to VPCRF with the QoS that degrades that receives from AF.
Step 1213:VPRF sends the QoS that degrades that authorizes to AGW.
Specifically: the QoS that degrades that VPCRF is defined as receiving is by the local policy ruling, and will send to AGW by the QoS information that degrades of local policy ruling, indication AGW carries for this professional foundation of user according to this QoS that degrades and connects. in the step 1213, VPCRF sends degrading during QoS information by the local policy ruling to AGW, as shown in Table 1 all that also the user can be contracted or that operator allows send to AGW. when degrading the QoS information of same common, VPCRF sends to AGW. here after the QoS of application layer mandate is converted to AGW form to understand, if the QoS that degrades that VPCRF receives still can not satisfy local policy, then VPCRF handles by failure, and finishes this handling process.
Step 1214:AGW is defined as the obtainable bearer network resource of current this user in the QoS scope that degrades of having authorized.
Specifically: after AGW receives the QoS that degrades from VPCRF, the QoS that the application layer mandate can be degraded compares to the QoS that self applies for the user, if the user is in the degrade QoS scope of QoS in the application layer mandate of self asking, the QoS that then accepts the user and asked, and provide bearing resource to connect for this business of this user by this QoS that degrades.If the QoS that the user asked has exceeded the QoS that degrades of application layer mandate, then AGW is defined as need discharging unnecessary reserved resource, and provides bearing resource to connect by the QoS that degrades of application layer mandate for this business of this user.
Comprise optional step 1215～step 1217 among Figure 12, returned the message of the QoS that confirms to degrade in order to AGW to AF.
Step 1215～step 1217:AGW returns affirmation message to the QoS that degrades by VPCRF, HPCRF to AF.
Step 1218:AGW notifies this professional resource needed link of MS of user to set up.
During practical application, step 1218 can be carried out after step 1217 as shown in figure 12, also can carry out the optional position after step 1214.
After the step 1218, user's MS and the Media Stream between the opposite end connect the road can successfully be set up, and the business that the user initiated can begin to carry out.
Need to prove that if in the step 1208 shown in Figure 12, VPCRF is defined as the default QoS of application layer mandate by the local policy ruling, then execution in step 1213, and in step 1213, VPCRF issues the default QoS of application layer mandate to AGW.Accordingly, judge in the step 1214 that the obtainable bearer network resource of current this user is whether in the default QoS scope of having authorized, if then carry out optional step 1215 or direct execution in step 1218, and will send the message of confirming default QoS in step 1215～step 1217.
Figure 13 is in the present embodiment, the implementation procedure schematic diagram of QoS negotiation mechanism when the default QoS of application layer initiation QoS authorization requests and application layer mandate is by the local policy ruling when the user is in roaming scence, and this process comprises following steps:
Step 1301: identical with step 1201.
Step 1302:AF sends the default QoS of application layer mandate to HPCRF.
In the step 1302, AF will send to HPCRF and carry out the local policy ruling through the default QoS of application layer mandate, and AF sends the VPCRF information that is used for determining active user place visited network to HPCRF simultaneously.In the step 1302, the QoS that degrades that application layer allowed also can be sent to HPCRF.The described QoS of degrading information is used to indicate HPCRF, if the default QoS that AF authorized can not pass through the local policy ruling, or local bearer network resource is when satisfying the default QoS authorized to the requiring of resource, can be according to this QoS that degrades processing that degrades.The expression way of this QoS that degrades can be as shown in Table 1.In the step 1302, AF obtains the process of the QoS that degrades with identical described in the step 805.
Step 1303:HPCRF sends the default QoS of application layer mandate to VPCRF.
Specifically: HPCRF determines a suitable VPCRF who is positioned at the current place of user visited network according to the information of receiving from AF, and will be transmitted to this VPCRF from the QoS information that AF receives there.Simultaneously, if HPCRF receives the QoS that degrades that application layer allowed from AF in step 1302, then the HPCRF QoS that also this degraded sends to VPCRF.
Step 1304～step 1309: identical with step 1208～step 1213.
Step 1310:AGW is defined as the obtainable bearer network resource of current this user and satisfies the QoS that degrades that has authorized.
Specifically: after AGW receives the QoS that degrades from VPCRF, whether can satisfy this requirement of QoS that degrade if judge the obtainable bearer network resource situation of current this user to resource. the obtainable bearer network resource of current this user can satisfy the QoS that degrades, then come to provide bearing resource to connect for this business of this user according to this QoS that degrades, otherwise AGW is defined as QoS and consults failure, and finishes this handling process.
Here, if PCRF has only sent by the QoS that degrades by the local policy ruling to AGW in step 1309, then the AGW QoS that only this degraded compares to the QoS that self applies for the user in the step 1310; If PCRF has sent all QoS that degrade that application layer allowed to AGW in the step 1309, then because the described QoS of degrading can be one group of QoS that degrades as described in table one, such as: comprise a plurality of QoS, and one group of QoS that degrades with priority, therefore, the obtainable bearer network resource of current this user can not satisfy by the degrading during qos requirement of local tactful ruling in the step 1310, and AGW can carry out the obtainable bearer network resource of current this user according to one of them QoS that degrades of the Information Selection such as priority among all the other QoS that degrade and whether satisfy this judgement of QoS to the requirement of resource that degrade.
Step 1311～step 1314: identical with step 1215～step 1218.
Described step 1311～step 1313 is an optional step.
After the step 1314, user's MS and the media stream links between the opposite end are successfully set up, and the business that the user initiated begins to carry out.
Need to prove that if in the step 1304 shown in Figure 13, VPCRF is defined as the default QoS of application layer mandate by the local policy ruling, then execution in step 1309, and in step 1309, VPCRF issues the default QoS of application layer mandate to AGW.Accordingly, judge in the step 1310 whether the obtainable bearer network resource of current this user satisfies the default QoS that has authorized, if then carry out optional step 1311 or direct execution in step 1314, and will send the message of confirming default QoS in step 1311～step 1313; If not the time, the processing that can degrade, specifically degrading the process of handling can be with reference to the correlation step among Figure 10.
In addition, if in the step 1309 shown in Figure 13, VPCRF has only sent application layer mandate and the QoS that degrades by the ruling of PCRF local policy to AGW, send to AGW during all QoS information of same that the user is not contracted or operator allows, if then the obtainable bearer network resource of current this user does not satisfy the QoS that degrades by the ruling of PCRF local policy in the step 1310, then AGW can be with reference to the processing that further degrades of step 1006～step 1010 among Figure 10.
When realizing the QoS machinery of consultation in the embodiment of the invention, if the not signatory QoS data that degrade of user, then this method can further comprise following steps: AF and send to confirm MS whether can accept the to degrade information of QoS to MS, if MS returns the information of the QoS that can accept to degrade to AF, when then network side is not accepted default QoS, the processing that can degrade, otherwise network side is defined as QoS and consults failure when not accepting default QoS.
When send as for AF and to confirm MS whether can accept the to degrade information of QoS to MS, if AF also sends the QoS information that degrades when PCRF or HPCRF send default QoS information, then can be before PCRF or HPCRF send default QoS information and the QoS information that degrades at AF, AF send to confirm MS whether can accept the to degrade information of QoS to MS, also can be when default QoS not be accepted by network side, PCRF or HPCRF send the information that default QoS is not accepted by network side to AF, after AF then receives the information that default QoS that PCRF or HPCRF send do not accept by network side, send to MS and to confirm MS whether can accept the to degrade information of QoS; If PCRF or VPCRF carry out before the local policy ruling to default QoS, AF does not send the QoS information that degrades to PCRF or HPCRF, then AF can be after the message of receiving the QoS after request that PCRF or HPCRF send is heavily consulted to degrade, sends to MS and confirm MS whether can accept the to degrade information of QoS.
Initiate the situation of QoS authorization requests for Access Network, MS is defined as can accepting to degrade behind the QoS, when network side is defined as not accepting default QoS, MS can also resend resource reservation request corresponding to the QoS that degrades to AGW, so, AGW receives that application layer mandate that PCRF or VPCRF send degrades behind the QoS, and the QoS corresponding in the resource reservation request of the QoS that degrades that this QoS and user can be resend compares.
The above is preferred embodiment of the present invention only, is not to be used to limit the scope of application of the present invention.

Claims (23)

1. system that realizes the QoS negotiation mechanism, comprise: mobile station MS, wireless access network RAN, access gateway AG W, strategy and billing function PCRF unit, application level function AF unit, MS is by RAN, AGW and AF unit interactive application layer information, the PCRF unit receives the default QoS information of application layer mandate that the AF unit sends, AGW receives the default QoS information of application layer mandate that the PCRF unit sends, it is characterized in that this system further comprises:
Comprise between PCRF unit and the AF unit: the PCRF unit receives being connected of the QoS information that degrades of the application layer mandate that the AF unit sends;
Further comprise between PCRF unit and the AF unit: the PCRF unit sends being connected of information that request heavily consults to degrade back QoS to the AF unit;
Comprise between AGW and the PCRF unit: AGW receives being connected of the QoS information that degrades of the application layer mandate that the PCRF unit sends;
Further comprise between AGW and the PCRF unit: AGW sends the bearer network resource to the PCRF unit and does not satisfy being connected of the information of having authorized default QoS.
2. system according to claim 1 is characterized in that AGW comprises: Signalling exchange unit, default QoS processing unit, bearer network rm-cell, and described AGW further comprises:
The QoS processing unit that degrades is used to receive the QoS information that degrades of the application layer mandate that the Signalling exchange unit sends, and sends the QoS state information that degrades to the Signalling exchange unit; Send the QoS information that degrades to the bearer network rm-cell, receive the QoS state information that degrades, default QoS state information that the bearer network rm-cell sends;
The Signalling exchange unit, further receive the QoS information that degrades of the application layer mandate that the PCRF unit sends after, be transmitted to the QoS processing unit that degrades; The reception QoS state information that degrades that the QoS processing unit sends that degrades;
The bearer network rm-cell, further send default QoS state information to the QoS processing unit that degrades, the degrade QoS information that degrades of the application layer mandate that the QoS processing unit sends of reception, the QoS state information of determining to degrade, and return the QoS state information that degrades to the QoS processing unit that degrades.
3. system according to claim 1 is characterized in that, the PCRF unit comprises: Signalling exchange unit, default QoS processing unit, local policy unit, and described PCRF unit further comprises:
The QoS processing unit that degrades is used to receive the QoS information that degrades of the application layer mandate that the Signalling exchange unit sends, and sends the QoS state information that degrades to the Signalling exchange unit; Send the QoS information that degrades to the local policy unit, receive the QoS state information that degrades, default QoS state information that the local policy unit sends;
The Signalling exchange unit, further receive the QoS information that degrades of the application layer mandate that the AF unit sends after, be transmitted to the QoS processing unit that degrades; The reception QoS state information that degrades that the QoS processing unit sends that degrades sends the QoS information that degrades of application layer mandate to AGW;
The local policy unit, further send default QoS state information to the QoS processing unit that degrades, the degrade QoS information that degrades of the application layer mandate that the QoS processing unit sends of reception, the QoS state information of determining to degrade, and return the QoS state information that degrades to the QoS processing unit that degrades.
4. system according to claim 3 is characterized in that, described PCRF unit further comprises: the CAMEL-Subscription-Information unit;
Be used for receiving inquiring user that the QoS processing unit that degrades of PCRF unit sends and whether contracted and degrade after the message of QoS, return user's information of QoS of degrading of whether having contracted to the QoS processing unit that degrades;
The QoS processing unit that degrades in the PCRF unit further sends the inquiring user message of QoS of degrading of whether having contracted to the CAMEL-Subscription-Information unit, receives user that the CAMEL-Subscription-Information interface unit the returns information of QoS of degrading of whether having contracted.
5. system according to claim 3 is characterized in that, described PCRF unit further comprises: the CAMEL-Subscription-Information unit;
Be used for receiving inquiring user that the QoS processing unit that degrades of PCRF unit sends and degrade after the message of QoS information, return user's the QoS information that degrades to the QoS processing unit that degrades;
The QoS processing unit that degrades in the PCRF unit further sends the degrade message of QoS information of inquiring user to the CAMEL-Subscription-Information unit, receives the user's that the CAMEL-Subscription-Information interface unit returns the QoS information that degrades.
6. system according to claim 1 is characterized in that, the AF unit comprises: Signalling exchange unit, QoS translation unit, default QoS processing unit, and described AF unit further comprises:
The QoS processing unit that degrades is used for the QoS that degrades is authorized, and the Signalling exchange unit in the AF unit sends the QoS information that degrades of application layer mandate;
Signalling exchange unit in the AF unit, further receive the QoS information that degrades of the application layer mandate that the QoS processing unit that degrades in the AF unit sends after, be transmitted to the PCRF unit.
7. system according to claim 6 is characterized in that, described AF unit further comprises: the CAMEL-Subscription-Information unit;
Be used for receiving the degrade message of QoS CAMEL-Subscription-Information of inquiring user that the QoS processing unit that degrades of AF unit sends, the QoS processing unit that degrades in the AF unit returns the degrade CAMEL-Subscription-Information of QoS of user;
The QoS processing unit that degrades in the AF unit sends the degrade message of QoS CAMEL-Subscription-Information of inquiring user to the CAMEL-Subscription-Information unit, receives the user who returns the CAMEL-Subscription-Information unit in the AF unit QoS CAMEL-Subscription-Information that degrades.
8. system according to claim 6 is characterized in that, described AF unit further comprises: the CAMEL-Subscription-Information unit;
Be used for receiving inquiring user that the Signalling exchange unit of AF unit the sends information of QoS of degrading of whether having contracted, the Signalling exchange unit in the AF unit sends user's information of QoS of degrading of whether having contracted;
Signalling exchange unit in the AF unit, CAMEL-Subscription-Information unit in the AF unit sends the inquiring user information of QoS of degrading of whether having contracted, receive the user who returns the CAMEL-Subscription-Information unit in the AF unit information of QoS of degrading of whether having contracted, the QoS translation unit in the AF unit sends user's information of QoS of degrading of having contracted;
QoS translation unit in the AF unit further receives user that the Signalling exchange unit in the AF unit the sends information of QoS of degrading of having contracted, translate the QoS information that degrades after, the QoS processing unit that degrades in the AF unit sends the QoS information that degrades;
The QoS processing unit that degrades in the AF unit receives the QoS information that degrades that the QoS translation unit in the AF unit sends.
9. according to claim 4,5,7,8 described systems, it is characterized in that the CAMEL-Subscription-Information unit in the described AF unit is: CAMEL-Subscription-Information database or obtain the CAMEL-Subscription-Information interface;
CAMEL-Subscription-Information database, further storing user subscription information;
Obtain the CAMEL-Subscription-Information interface, further obtain the degrade CAMEL-Subscription-Information of QoS of user with the external data base interactive information of storing user subscription information.
10. system according to claim 9, it is characterized in that, CAMEL-Subscription-Information unit in the described AF unit is for obtaining the CAMEL-Subscription-Information interface, and described external data base is: home subscriber server HSS or authentication and authorization charging AAA database or application server AS.
11., it is characterized in that described PCRF unit is visited network PCRF according to each described system of claim 1 to 8; Further comprise between AF unit and the visited network PCRF: home network PCRF;
Home network PCRF is used to transmit the information between visited network PCRF and the AF unit.
12. a method that realizes the QoS negotiation mechanism is characterized in that the method includes the steps of:
A, user send service request to the AF unit of network side, and the AF unit of network side carries out QoS to the business of user's request and authorizes;
Whether the default QoS of the PCRF unit judges application layer mandate of B, network side judges by the AGW of local policy ruling and network side whether the obtainable bearer network resource of active user satisfies default QoS, if then set up bearing resource for this business by default QoS; Otherwise whether the QoS that degrades of the PCRF unit judges application layer mandate of network side judges by the AGW of local policy ruling and network side whether the obtainable bearer network resource of active user satisfies the QoS that degrades, if then set up bearing resource for this business by the QoS that degrades; Otherwise be defined as QoS and consult failure.
13. method according to claim 12 is characterized in that, further comprises between steps A and the step B: the AF unit sends the default QoS information of application layer mandate to the PCRF unit of network side.
14. method according to claim 13 is characterized in that, further comprises before the step B: the AGW of user in network side sends the bearing resource reservation request; AGW sends the QoS authorization requests to the PCRF unit of network side;
Described step B specifically comprises following steps:
Whether the default QoS of PCRF unit judges application layer mandate in B11, the network side by the local policy ruling, if, execution in step B12 then; Otherwise execution in step B14;
B12, PCRF unit send default QoS information to AGW;
B13, AGW set up bearing resource by default QoS, and finish this handling process;
Whether B14, the mandate of PCRF unit judges application layer degrade QoS by the local policy ruling, if then execution in step B15 consults failure otherwise the PCRF unit is defined as QoS, and finishes this handling process;
B15, PCRF unit send the QoS information that degrades to AGW;
B16, AGW set up bearing resource by the QoS that degrades.
15. method according to claim 13 is characterized in that, described step B specifically comprises following steps:
Whether the default QoS of PCRF unit judges application layer mandate in B21, the network side by the local policy ruling, if, execution in step B22 then; Otherwise execution in step B25;
B22, PCRF unit send default QoS information to AGW;
B23, AGW judge whether the obtainable bearer network resource of current described user satisfies default QoS, if satisfy, then set up bearing resource by default QoS, and finish this handling process; Otherwise execution in step B24;
B24, AGW judge that whether the obtainable bearer network resource of current described user satisfies the QoS that degrades, if satisfy, then sets up bearing resource by the QoS that degrades, and finishes this handling process; Otherwise AGW is defined as QoS and consults failure, and finishes this handling process;
Whether B25, the mandate of PCRF unit judges application layer degrade QoS by the local policy ruling, if then execution in step B26 consults failure otherwise the PCRF unit is defined as QoS, and finishes this handling process;
B26, PCRF unit send the QoS information that degrades to AGW;
B27, AGW judge that whether the obtainable bearer network resource of current described user satisfies the QoS that degrades, if satisfy, then sets up bearing resource by the QoS that degrades; Otherwise AGW is defined as QoS and consults failure.
16. according to claim 14 or 15 described methods, it is characterized in that, when the AF unit sends the default QoS information of application layer mandate to the PCRF unit of network side, send the QoS information that degrades of application layer mandate simultaneously;
Or, the default QoS that the PCRF unit is defined as the application layer mandate is by after the local policy ruling, judges whether the application layer mandate QoS that degrades further comprises by before the local policy ruling: the information of PCRF unit QoS after the AF unit sends request and heavily consults to degrade; The AF unit sends the QoS information that degrades of application layer mandate to the PCRF unit.
17. method according to claim 15, it is characterized in that, among the step B23, AGW is defined as the obtainable bearer network resource of current described user can not satisfy default QoS after, further comprise before the execution in step B24: AGW sends the information that current bearer network resource does not satisfy default QoS to the PCRF unit; The information of PCRF unit QoS after the transmission request of AF unit is heavily consulted to degrade; The AF unit sends the QoS information that degrades by the PCRF unit to AGW; The PCRF unit sends the QoS information that degrades to the AGW unit;
Or, when the AF unit sends the default QoS information of application layer mandate to the PCRF unit of network side, send the QoS information that degrades of application layer mandate simultaneously; Among the step B23, AGW is defined as the obtainable bearer network resource of current described user can not satisfy default QoS after, further comprise before the execution in step B24: AGW sends the information that current bearer network resource does not satisfy default QoS to the PCRF unit; The PCRF unit sends the QoS information that degrades to the AGW unit.
18. according to claim 14 or 15 described methods, it is characterized in that, when the AF unit sends the default QoS information of application layer mandate to the PCRF unit of network side, send the QoS information that degrades of application layer mandate simultaneously; The PCRF unit judges is the default QoS of application layer mandate by after the local policy ruling, when AGW sends default QoS information, sends the QoS information that degrades to AGW simultaneously.
19. according to claim 14 or 15 described methods, it is characterized in that, the PCRF unit is defined as the default QoS of application layer mandate not by after the local policy ruling, judge that whether the application layer mandate QoS that degrades further comprises by before the local policy ruling: the PCRF unit judges whether according to local policy or user signing contract information can be to the QoS processing that degrades, if, then carry out and judge whether the application layer mandate QoS that degrades passes through the step of local policy ruling, otherwise the PCRF unit is defined as QoS and consults failure, and finishes this handling process.
20. according to claim 12,13,14,15 or 17 described methods, it is characterized in that the expression way of the described QoS of degrading can be for: the upper limit value and the lower limit value of the concrete parameter of given every QoS or comprised a plurality of QoS with priority or the percentage number that degrades of given every qos parameter.
21. method according to claim 12, it is characterized in that, this method further comprises: AF sends affirmation whether can accept the to degrade information of QoS to the user, if the user can accept, when then network side is defined as not accepting the default QoS of application layer mandate, judge whether to accept the QoS that degrades of application layer mandate again, if the user can not accept, when then network side was defined as not accepting the default QoS of application layer mandate, network side was defined as QoS and consults failure.
22. method according to claim 21 is characterized in that, further comprises before the step B: the AGW of user in network side sends the bearing resource reservation request; AGW sends the QoS authorization requests to the PCRF unit of network side;
When network side was defined as not accepting the default QoS of application layer mandate, the user resend bearing resource reservation request corresponding to the QoS that degrades to AGW.
23., it is characterized in that described PCRF unit is positioned at visited network according to claim 13,14,15,17,22 described methods;
Information transmission between described PCRF unit and the AF unit is undertaken by the home network PCRF unit that is positioned at home network.
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