CN103581839A - Broadband trunking service realizing method and broadband trunking service realizing system - Google Patents
Broadband trunking service realizing method and broadband trunking service realizing system Download PDFInfo
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Abstract
The invention discloses a broadband trunking service realizing method and a broadband trunking service realizing system. The method comprises the following steps: when the service type of an established trunked call service is transformed from a first type to a second type, a trunked scheduling subsystem modifies a T1 bearer of a trunked call service corresponding to a base station to which group member terminals belongs according to QoS parameters corresponding to the trunked call service of the second type, and notifies the base station to reestablish a downlink shared bearer for the group member terminals managed by the base station; and the trunked scheduling subsystem notifies the group member terminals that the service type of the trunked call service is changed after reestablishment of the downlink shared bearer is finished. With the broadband trunking service realizing method and the broadband trunking service realizing system, diversification and real-time transmission of broadband services can be realized.
Description
Technical field
The present invention relates to trunked communication system field, refer to especially implementation method and the system of a kind of broadband group service.
Background technology
The private wireless communication system that trunked communication system is developed in order to meet industry user's command scheduling demand, applied towards specific industry, in system, a large amount of wireless users share a small amount of wireless channel, take command scheduling as main body application, is a kind of multipurpose, dynamical wireless communication system.
Trunked communication system has experienced and the similar development course of cell mobile communication systems:
First generation group system is simulation trunked communication system, main support voice communication.For example, Actionet system (adopt MPT-1327 signaling, be applied in 450MHz frequency range), Smartnet system etc.
Second generation group system is narrow-band digital trunked communication system, support voice is communicated by letter with low speed data (the highest 28.8kbps), representative system is land trunked radio (Terrestrial Trunked Radio, TETRA) system, Integrated Digital Enhanced Network (Integrated Digital Enhanced Networks, iDEN) system, the open trunking architecture based on CDMA1X (Global Open Trunking Architecture, GoTa) system and the GT800 system based on GSM.
From the development of current cluster communication system, the development of trunked communication system lags far behind the development of public's cellular system, and the aspects such as its technological innovation and industrial chain are all also complete not to the utmost.Aspect the tenability of data transmission capabilities and multimedia service, current digital arrowband trunked communication system is still relatively backward.For example, iDEN system is improved the rear broadband integrated digital enhanced network (Wide-iDEN, WiDEN) of releasing to time slot and modulator approach, and hardware circuit solution is increased to 384kbps; TETRA enhanced data rates for GSM evolution (TETRA Release 2 Enhanced Data Service, TEDS) can support to be no more than the hardware circuit solution of 700kbps in the ideal case, and both hardware circuit solution all do not reach the order of magnitude of Mbps.In addition,, aspect the availability of frequency spectrum and covering, existing digital cluster system can not well satisfy the demands.
Along with the develop rapidly of mobile Internet and the Large scale construction in global radio city, the broadband development trend that becomes whole radio communication.Tradesman carries out in the process of command scheduling in application cluster communication system, not only requires " hearing ", also requires " visible ".Correspondingly, trunked communication system is technically also by future development broadband to the variation of system IPization, business, data, terminal multimode.From concrete application point, be mainly reflected in high-speed data, video and be implemented in the multiple application on this basis, comprise the aspects such as mobile office, multimedia cluster scheduling, video monitoring, City Emergency Linkage Control System.
New trunked communication system also should have larger channel capacity, the higher availability of frequency spectrum, better transmission performance, adopt low-cost, scalable, configurable IP full wireless multi-media network framework, compatible existing group system, and can realize smooth evolution.
New generation broadband wireless access technology, time-division Long Term Evolution (TD-LTE, Time Division-Long Term Evolution), the advantage of its high bandwidth, low time delay can guarantee the high-speed transfer of multimedia service in group, solved for a long time and can only carry out PTT audio call in trunked communication system, cannot carry out the problem that high-speed multimedia business transmits in real time.For this reason, need to provide a kind of technical scheme to support the realization of the broadband group service based on TD-LTE.
Summary of the invention
In view of this, main purpose of the present invention is to provide implementation method and the system of a kind of broadband group service, to realize the broadband group service based on TD-LTE.
For achieving the above object, technical scheme of the present invention is achieved in that
The invention provides the implementation method of a kind of broadband group service, the type of service of the trunked call service of having set up is transformed to Second Type by the first kind, and the method also comprises:
The qos parameter corresponding according to the trunked call service of Second Type, trunking dispatching subsystem is revised the T1 carrying of described trunked call service corresponding to base station under group member terminal, and to notify described base station be that the described group member terminal of described BTS management re-establishes descending shared carrying;
After having re-established of described descending shared carrying, described trunking dispatching subsystem notifies the type of service of trunked call service described in described group member terminal to change.
When the type of service that described trunking dispatching subsystem is initiated described trunked call service is transformed to Second Type by the first kind,
Described trunking dispatching subsystem is revised the T1 carrying of described trunked call service corresponding to the affiliated base station of group member terminal, comprising:
Chain of command dispatch server (C-PDS) in described trunking dispatching subsystem sends carrying change request message to the medium surface dispatch server (M-PDS) in described trunking dispatching subsystem, asks described M-PDS to revise the T1 carrying of the trunked call service corresponding with described base station; In described carrying change request message, carry: the qos parameter that the trunked call service of call identification, call priority, Second Type is corresponding and the sign of described base station;
Described M-PDS searches the medium surface resource of the T1 carrying corresponding with described base station of self storing, if search less than, M-PDS according to qos parameter corresponding to the trunked call service of Second Type, redistribute the medium surface resource of the T1 corresponding with described base station carrying, and return and create carrying response message to described C-PDS; If find, the medium surface resource that M-PDS carries according to the T1 corresponding with described base station of qos parameter corresponding to the trunked call service of Second Type, modification M-PDS storage, and return to carrying variation response message to C-PDS;
In described carrying variation response message, carrying M-PDS is the T1-TEID corresponding with described base station that trunked call service distributes.
It is that the described group member terminal of described BTS management re-establishes descending shared carrying that described trunking dispatching subsystem is notified described base station, comprising:
Described C-PDS sends user and shares bearer reconstruction request message to base station, wherein carry: the qos parameter that the trunked call service of call identification, call priority, Second Type is corresponding, IP and the described M-PDS of described M-PDS are the T1-TEID corresponding with described base station that trunked call service distributes;
Described base station re-establishes descending shared carrying according to qos parameter corresponding to the trunked call service of Second Type, for the group member terminal of described BTS management, delete original descending shared carrying, and to described C-PDS, return to user and share bearer reconstruction response message, wherein carrying described base station is the T1-TEID that trunked call service is redistributed.
After having re-established of described descending shared carrying, the method also comprises:
Described C-PDS sends and revises carrying change request message to M-PDS, and wherein carrying described base station is the T1-TEID that trunked call service is redistributed;
M-PDS is that T1-TEID and the described base station that trunked call service distributes is that the T1-TEID that trunked call service is redistributed modifies by the base station of preservation, and returns and revise carrying variation response message to C-PDS.
Described trunking dispatching subsystem notifies the type of service of trunked call service described in described group member terminal to change, and comprising:
Described C-PDS sends service informing information to all group member terminals in group, and the type of service of prompting trunked call service is transformed to Second Type.
When the type of service that described group member terminal is initiated described trunked call service is transformed to Second Type by the first kind, the group member terminal that the type of service of initiating described trunked call service is transformed to Second Type by the first kind in business transmitting terminal ，Jiang group other group member terminals except described business transmitting terminal as business receiving terminal; Base station under described business transmitting terminal is as the first base station, and the base station under described business receiving terminal is as the second base station, and described the second base station has one or more.
Described trunking dispatching subsystem is revised the T1 carrying of described trunked call service corresponding to the affiliated base station of group member terminal, comprising:
Chain of command dispatch server (C-PDS) in described trunking dispatching subsystem sends carrying change request message to the medium surface dispatch server (M-PDS) of the Media Stream of trunked call service described in described trunking dispatching subsystem repeating, asks described M-PDS to revise the T1 carrying of the trunked call service corresponding with described the second base station; In described carrying change request message, carry: the qos parameter that the trunked call service of call identification, call priority, Second Type is corresponding and the sign of the second base station;
Described M-PDS searches the medium surface resource of the T1 carrying corresponding with the second base station of self storing, if search less than, M-PDS according to qos parameter corresponding to the trunked call service of Second Type, redistribute the medium surface resource of the T1 corresponding with the second base station carrying, and return and create carrying response message to described C-PDS; If find, the medium surface resource that M-PDS carries according to the T1 corresponding with the second base station of qos parameter corresponding to the trunked call service of Second Type, modification M-PDS storage, and return to carrying variation response message to C-PDS;
In described carrying variation response message, carrying M-PDS is the T1-TEID corresponding with the second base station that trunked call service distributes.
It is that the described group member terminal of described BTS management re-establishes descending shared carrying that described trunking dispatching subsystem is notified described base station, comprising:
Described C-PDS sends user to the second base station and shares bearer reconstruction request message, wherein carries: the qos parameter that the trunked call service of call identification, call priority, Second Type is corresponding, IP and the described M-PDS of described M-PDS are the T1-TEID corresponding with the second base station that trunked call service distributes;
Described the second base station re-establishes descending shared carrying according to qos parameter corresponding to the trunked call service of Second Type, for the business receiving terminal of described the second BTS management, delete original descending shared carrying, and to described C-PDS, return to user and share bearer reconstruction response message, wherein carrying the second base station is the T1-TEID that trunked call service is redistributed.
After having re-established of described descending shared carrying, the method also comprises:
Described C-PDS sends and revises carrying change request message to M-PDS, and wherein carrying the second base station is the T1-TEID that trunked call service is redistributed;
M-PDS is that T1-TEID, described the second base station of foundation that trunked call service distributes is that the T1-TEID that trunked call service is redistributed modifies by the second base station of preservation, and returns and revise carrying variation response message to C-PDS.
Described trunking dispatching subsystem notifies the type of service of trunked call service described in described group member terminal to change, and comprising:
Described C-PDS sends service informing information to all business receiving terminals in group, and sends authorization messages to described business transmitting terminal, and the type of service of prompting trunked call service is transformed to Second Type.
Before described trunking dispatching subsystem is revised the T1 carrying of described trunked call service corresponding to the affiliated base station of group member terminal, the method also comprises:
Described trunking dispatching subsystem is set up up carrying for described business transmitting terminal again, and again for all business receiving terminals, sets up descending shared carrying.
Described trunking dispatching subsystem is set up up carrying for described business transmitting terminal again, comprising:
Described C-PDS sends carrying change request message to described M-PDS, the T1 that asks described M-PDS to revise the trunked call service corresponding with described the first base station carries, and in described carrying change request message, carries: the qos parameter that the trunked call service of call identification, call priority, Second Type is corresponding and the sign of described the first base station;
Described M-PDS searches the medium surface resource of the T1 carrying corresponding with described the first base station of self storing, if search less than, M-PDS according to qos parameter corresponding to the trunked call service of Second Type, redistribute the medium surface resource of the T1 corresponding with described the first base station carrying, and return and create carrying response message to described C-PDS; If find, the medium surface resource that M-PDS carries according to the T1 corresponding with described the first base station of qos parameter corresponding to the trunked call service of Second Type, modification M-PDS storage, and return to carrying variation response message to C-PDS; In described carrying variation response message, carrying M-PDS is the T1-TEID corresponding with described the first base station that trunked call service distributes;
Described C-PDS sends user's dedicated bearer to described the first base station and sets up request message, wherein carries: the qos parameter that the trunked call service of the sign of described business transmitting terminal, call identification, call priority, Second Type is corresponding, IP and the M-PDS of described M-PDS are the T1-TEID corresponding with the first base station that trunked call service distributes;
Described the first base station, according to qos parameter corresponding to the trunked call service of Second Type, to described business transmitting terminal transmission RRC connection reconfiguration message, is revised the RRC having set up and is connected;
Described business transmitting terminal sends RRC connection to described the first base station and has reshuffled message, confirms that RRC connects reprovision and completes;
Described the first base station sends user's dedicated bearer to described C-PDS and sets up response message, and the up carrying of business transmitting terminal has been set up described in notice C-PDS; Described user's dedicated bearer is set up and carried described the first base station in response message is the T1-TEID that trunked call service is redistributed.
Again for all business receiving terminals, set up descending shared carrying, comprising:
Described C-PDS sends user to described the first base station and shares bearer reconstruction request message, wherein carries: the qos parameter that the trunked call service of call identification, call priority, Second Type is corresponding, IP and the described M-PDS of described M-PDS are the T1-TEID corresponding with described the first base station that trunked call service distributes;
Described the first base station is according to qos parameter corresponding to the trunked call service of Second Type, re-establish descending shared carrying for described all business receiving terminals, delete original descending shared carrying, and to described C-PDS, return to user and share bearer reconstruction response message, notify the descending shared carrying of all business receiving terminals of described C-PDS to set up; In the shared bearer reconstruction response message of described user, carrying described the first base station is the T1-TEID that trunked call service is redistributed.
Described trunking dispatching subsystem is set up up carrying for described business transmitting terminal again, and is that before all business receiving terminals are set up descending shared carrying, the method also comprises again:
The type of service that described business transmitting terminal is initiated described trunked call service is transformed to Second Type by the first kind;
Described trunking dispatching subsystem is initiated the authentication process of type of service conversion.
The type of service that described business transmitting terminal is initiated described trunked call service is transformed to Second Type by the first kind, comprising:
Described business transmitting terminal sends business request information to described C-PDS, the type of service of request trunked call service is transformed to Second Type by the first kind, carries: the sign of business transmitting terminal, call model, type of service and called number in described business request information;
Described call model is for being designated as trunked call; Described type of service is designated as described Second Type.
Described trunking dispatching subsystem is initiated the authentication process of type of service conversion, comprising:
Described C-PDS initiates authentication process to the home location register (PHR) in trunking dispatching subsystem, according to the relevant information of the legitimacy of preserving in described PHR and authority, the legitimacy of described business transmitting terminal is judged and the authority whether all group member terminals in described group have a trunked call service of carrying out Second Type is judged;
If all group member terminals have the authority of the trunked call service of carrying out Second Type in the legal ,Qie of described business transmitting terminal group, authentication is passed through.
When described authentication is passed through, the method also comprises:
The information that described C-PDS obtains business transmitting terminal from described PHR, comprising: the user right of business transmitting terminal and qos parameter corresponding to Second Type trunked call service.
The present invention also provides the system that realizes of a kind of broadband group service, this system applies is when the type of service of the trunked call service of having set up is transformed to Second Type by the first kind, comprise: trunking dispatching subsystem, broadband wireless access subsystem and group member terminal, described broadband wireless access subsystem comprises base station; Wherein:
Described trunking dispatching subsystem, for revising the T1 carrying of described trunked call service corresponding to base station under group member terminal, and to notify described base station be that the described group member terminal of described BTS management re-establishes descending shared carrying;
Described base station, is used to the described group member terminal of described self-management to re-establish descending shared carrying;
Described trunking dispatching subsystem, also for after having re-established of described descending shared carrying, notifies the type of service of trunked call service described in described group member terminal to change.
Described group member terminal, is also transformed to Second Type for initiating the type of service of described trunked call service by the first kind; Or,
Described trunking dispatching subsystem, is also transformed to Second Type for initiating the type of service of described trunked call service by the first kind.
Implementation method and the system of the open broadband of the present invention group service, when the type of service of the trunked call service of having set up is transformed to Second Type by the first kind, the qos parameter corresponding according to the trunked call service of Second Type, trunking dispatching subsystem is revised the T1 carrying of trunked call service corresponding to the affiliated base station of group member terminal, and the group member terminal that informing base station is BTS management re-establishes descending shared carrying; After having re-established of descending shared carrying, the type of service of trunking dispatching subsystem notice group member terminal trunked call service changes.In such scheme, adopt trunking dispatching subsystem to realize qos policy and control, reduce broadband wireless access subsystem load; Adopt many M-PDS to transmit broadband services, realized the real-time transmission of high speed broadband service in group; Business is carried out middle according to the carrying of qos parameter change real-time update, support broadband services variation.
Accompanying drawing explanation
Fig. 1 is the structural representation of the wideband digital trunked communication system based on TD-LTE technology;
Fig. 2 is the implementation method schematic flow sheet of broadband of the present invention group service;
Fig. 3 is the implementation method schematic flow sheet of the broadband group service of the embodiment of the present invention one;
Fig. 4 is the implementation method schematic flow sheet of the broadband group service of the embodiment of the present invention two.
Embodiment
The implementation method of the broadband group service that the present invention proposes is for realizing the real-time transmission of broadband services in wideband digital cluster group, the wideband digital trunked communication system of the realization of the method based on TD-LTE technology.
TD-LTE technology is the evolution technology of TD SDMA (TD-SCDMA), is the model that mobile communication and broadband wireless access are merged, and is also one of mainstream standard of following wide-band mobile communication.Compare with existing trunked communication system, wideband digital trunked communication system based on TD-LTE technology has larger channel capacity, the higher availability of frequency spectrum, stronger antijamming capability and better transmission performance, and the wideband digital trunked communication system based on TD-LTE technology can be realized the real-time transmission of high speed broadband service in group.
Fig. 1 is the structural representation of the wideband digital trunked communication system based on TD-LTE technology.As shown in the figure, the wideband digital trunked communication system based on TD-LTE technology comprises: terminal, broadband wireless access subsystem and three chief components of trunking dispatching subsystem.Below each part is described.
1, terminal.
Terminal refers to the terminal equipment (UE) that user can direct control, comprises user terminal and dispatching desk client, and user terminal is comprised of mobile terminal and fixed station.Wherein, mobile terminal comprises hand held mobile station and Vehicle mounted station etc.
Terminal possesses group service function, also possesses the multiple business abilities such as interconnect call business, Packet data service, short message service simultaneously, can in the whole network coverage, roam.
2, broadband wireless access subsystem.
Broadband wireless access subsystem is mainly comprised of enhanced base station (eNodeB).For being responsible for the relevant treatment of group service, complete the access function of terminal, and according to type of service, the message of terminal is distributed to corresponding trunking dispatching subsystem processing, for example: by control signal send to C-PDS and from C-PDS receive cluster control signal, for terminal distribution Radio Resource (as, for receiving the descending shared Radio Resource of cell allocation at the terminal place of business data flow); The business data flow that sends business data flow to M-PDS and the business transmitting terminal receiving by M-PDS is sent is sent to business receiving terminal etc.
3, trunking dispatching subsystem.
Trunking dispatching subsystem comprises dispatch server (PTT Dispatching Server, PDS), home location register (PTT Home Register, PHR), dispatching desk server (Dispatching Agent Server, DAS) and dispatching desk client (Dispatching Agent Client, DAC).Trunking dispatching subsystem and broadband wireless access subsystem interconnect by IP network.
PDS, is the control centre of cluster service, for carrying out foundation and the release of trunked call, as: differentiate that one by saying (PTT, Push To Talk) user, set up PTT calling, judging PTT request etc.; PDS is also for carrying out collecting and the processing such as forwarding of voice, as: the PTT voice packet that receiving uplink comes, and be distributed to down link.PDS is divided into chain of command dispatch server (C-PDS) and medium surface dispatch server (M-PDS), configurable a plurality of M-PDS under a C-PDS.Between C-PDS and M-PDS, by T11 interface, connect, T11 interface is S11 Interface Expanding, general packet radio service based on chain of command (GPRS) tunnel protocol (GTP-C, GPRS Tunneling Protocol for control plane) is realized.
PHR, for the group of cluster, group and user are managed, and carries out authentication, authentication and charging; Digital clustering communication system provides cluster service for group, and described group is comprised of a plurality of groups and user, and each user can belong to a plurality of groups;
DAS, for carrying out DAC access, for user provides dispatching desk service;
DAC, for providing group, user in man-machine interface ，Dui group to initiate trunked call.
In the above-mentioned wideband digital trunked communication system based on TD-LTE technology:
Between terminal and eNodeB, by LTE-Uu interface, be connected;
Between eNodeB and C-PDS, by T1-C interface, be connected, T1-C interface is S1 Interface Expanding, based on SCTP (SCTP, Stream Control Transmission Protocol), realizes; Between eNodeB and M-PDS, by T1-U interface, be connected, T1-U interface is S1 Interface Expanding, and the general packet radio service tunnel agreement based on user's face (GTP-U, GPRS Tunneling Protocol for the user plane) realizes.
Wideband digital trunked communication system based on above-mentioned, the implementation method of broadband of the present invention group service as shown in Figure 2, comprising:
In conjunction with the method shown in Fig. 2, in the system shown in Fig. 1, when the type of service of the trunked call service of having set up is transformed to Second Type by the first kind:
Trunking dispatching subsystem, for revising the T1 carrying of described trunked call service corresponding to base station under group member terminal, and the group member terminal that informing base station is BTS management re-establishes descending shared carrying;
Base station, is used to the group member terminal of self-management to re-establish descending shared carrying;
Trunking dispatching subsystem, also for after having re-established of descending shared carrying, the type of service of notice group member terminal trunked call service changes.
Group member terminal, is transformed to Second Type for initiating the type of service of trunked call service by the first kind; Or,
Trunking dispatching subsystem, is also transformed to Second Type for initiating the type of service of trunked call service by the first kind.
Concrete, in Fig. 1, the concrete function of each part will describe in follow-up embodiment.
Below in conjunction with Fig. 1, by specific embodiment, the scheme shown in above-mentioned Fig. 2 is described.
Fig. 3 is in the inventive method embodiment, in cluster session, and the realization flow figure of the broadband group service that the type of service of being initiated by terminal changes.
In this embodiment: prerequisite is that trunked call service is set up, the type of service that group member terminal is initiated trunked call service changes, and by the first kind, is changed to Second Type.The group member terminal of initiating type of service change in group is called to business transmitting terminal, except other group member terminals in business transmitting terminal Wai, group are called business receiving terminal.Base station under business transmitting terminal is called to the first base station, the base station under business receiving terminal is called to the second base station, generally, the second base station has a plurality of, and the first base station and certain second base station may be also same base stations.
Step 301, business transmitting terminal sends business request information to C-PDS, and requested service Change of types in this embodiment, is supposed the type of service of trunked call service to be changed to video (Second Type) by voice (first kind).In business request information, carry sign, call model (trunked call), type of service (video) and the called number (group number) etc. of business transmitting terminal.
Wherein, call model comprises individual calling and trunked call, and in an embodiment of the present invention, call model is trunked call;
Called number is relevant with call model, and when call model is trunked call, called number is group number.
Step 302, C-PDS initiates authentication process to PHR, comprise: the judgement to the legitimacy of business transmitting terminal, and the judgement (having preserved the relevant information of legitimacy and authority in PHR) whether all group member terminals in group to video calling authority, if failed authentication (being that in the illegal and/or group of business transmitting terminal, all group member terminals do not have video calling authority), C-PDS refuses this service request, flow process finishes, and the trunked call that original type of service is voice keeps; If authentication is by (being that in the legal and group of business transmitting terminal, all group member terminals have video calling authority), C-PDS obtains the information of business transmitting terminal from PHR, comprise: qos parameter corresponding to trunked call service that user right (authority of business transmitting terminal) and type of service are video, then performs step 303.
Step 303, C-PDS sends carrying change request message to the M-PDS that forwards the Media Stream of this trunked call service, request M-PDS revises the T1 carrying of the trunked call service corresponding with the first base station, in carrying change request message, carries: the qos parameter that trunked call service that call identification (group number), call priority, type of service are video is corresponding and the information (such as identifying) of the first base station etc.
Wherein, when call model is trunked call, call identification is group number.
Call priority refers to the priority of this calling, is in an embodiment of the present invention: when type of service is video, and the priority of this trunked call.
Step 304, M-PDS search self storage the trunked call service corresponding with the first base station medium surface bearing resource (here, medium surface bearing resource is that above-mentioned T1 carries corresponding medium surface resource), if search less than, qos parameter corresponding to trunked call service that M-PDS is video according to type of service, redistribute the medium surface bearing resource of the trunked call service corresponding with the first base station, and return to carrying variation response message to C-PDS, wherein carrying M-PDS is the T1 tunnel endpoint identifier (T1-TEID corresponding with the first base station that trunked call service distributes, T1-Tunnel Endpoint Identifier), if find, the qos parameter that the trunked call service that is video according to type of service is corresponding, revise the medium surface bearing resource of the trunked call service corresponding with the first base station, and return to carrying variation response message to C-PDS, wherein carrying M-PDS is the T1-TEID corresponding with the first base station that trunked call service distributes.
If current M-PDS inadequate resource, the business that can not guarantee is carried out, and the carrying of replying refusal changes response message, by C-PDS, refuses this service request, and flow process finishes, and the trunked call service that type of service is voice keeps.
Step 305, after in M-PDS, the T1 bearing modification of trunked call service corresponding with the first base station, that type of service is video completes: C-PDS sends user's dedicated bearer to the first base station and sets up request message, and notifying the first base station is that business transmitting terminal is set up up carrying.In message, carry: the qos parameter that trunked call service that the sign of business transmitting terminal, call identification (group number), call priority, type of service are video is corresponding, the IP of M-PDS and M-PDS are the T1-TEID corresponding with the first base station that trunked call service distributes.
Step 306, the qos parameter that trunked call service that the first base station is video according to type of service is corresponding, to business transmitting terminal, send RRC and connect and reshuffle (RRC Connection Reconfiguration) message, revise the RRC set up and connect (the RRC connection of soon having set up is reshuffled, and makes it meet the requirement that type of service is the qos parameter that the trunked call service of video is corresponding).
Step 307, business transmitting terminal sends RRC connection and has reshuffled (RRC Connection Reconfiguration Complete) message to the first base station, confirm that RRC connects reprovision and completes.
Step 308, the first base station sends user's dedicated bearer to C-PDS and sets up response message, and the up carrying of notice C-PDS business transmitting terminal is set up complete.In message, carrying the first base station is the T1-TEID that trunked call service is redistributed.
Step 309, C-PDS sends user to the first base station and shares bearer reconstruction request message, notifies the first base station again for all business receiving terminals in group are set up descending shared carrying.In message, carry: the qos parameter that trunked call service that call identification (group number), call priority, type of service are video is corresponding, the IP of M-PDS and M-PDS are the T1-TEID corresponding with this first base station that trunked call service distributes.
Step 310, in qos parameter ,Wei group corresponding to trunked call service that the first base station is video according to type of service, all business receiving terminals re-establish descending shared carrying, delete original descending shared carrying (for voice).
Step 311, the first base station sends user to C-PDS and shares bearer reconstruction response message, and the descending shared carrying of all business receiving terminals of notice C-PDS is set up complete.In message, carrying the first base station is the T1-TEID that trunked call service is redistributed.
Illustrate: in step 308 and step 311, the first base station is that the T1-TEID that trunked call service is redistributed is same ID.
Separately, step 305～308 and step 309～311st, synchronize concurrent carry out.
Step 312, C-PDS sends and revises carrying change request to M-PDS, in message, carrying the first base station is the T1-TEID that trunked call service is redistributed, and request M-PDS revises the medium surface bearing resource (revising T1-TEID corresponding to the first base station) of trunked call service corresponding to the first base station.
It is pointed out that in M-PDS and preserved two T1-TEID corresponding to the first base station, one is that M-PDS is the corresponding T1-TEID in the first base station that trunked call service distributes; One is that the first base station is the T1-TEID that trunked call service distributes.What here, request M-PDS revised is that the first base station is the T1-TEID that trunked call service distributes.
Step 313, it is that the T1-TEID that trunked call service is redistributed modifies that M-PDS revises first base station of carrying in carrying change request message by corresponding T1-TEID, the foundation in first base station of originally preserving, and returns and revise carrying variation response message to C-PDS.
When above-mentioned steps 303-313 is type of service variation, again for business transmitting terminal is set up up carrying and again sets up the process of descending shared carrying for all business receiving terminals.
Step 314, C-PDS is according to the second station list of record, for each the second base station, to the M-PDS that forwards trunked call service Media Stream, send carrying change request message, request M-PDS revises the T1 carrying of the trunked call service corresponding with each the second base station, in message, carries: the qos parameter that trunked call service that call identification (group number), call priority, type of service are video is corresponding and the information (such as identifying) of the second base station etc.Wherein, the information of second base station of carrying in this message, can comprise the information of all the second base stations, also can comprise the information of second base station.
Step 315, M-PDS search self storage the trunked call service corresponding with the second base station medium surface bearing resource (here, medium surface bearing resource is that above-mentioned T1 carries corresponding medium surface resource), if search less than, the qos parameter that trunked call service that M-PDS is video according to type of service is corresponding, redistribute the medium surface bearing resource of the trunked call service corresponding with the second base station, to C-PDS, return and create carrying response message, wherein carrying M-PDS is the T1-TEID corresponding with the second base station that trunked call service distributes; If find, the qos parameter that the trunked call service that is video according to type of service is corresponding, revise the medium surface bearing resource of the trunked call service corresponding with the second base station, and return to carrying variation response message to C-PDS, wherein carrying M-PDS is the T1-TEID corresponding with the second base station that trunked call service distributes.
It is pointed out that M-PDS is that trunked call service T1-TEID that distribute, that each the second base station is corresponding is different.
Step 316, C-PDS send user to the second base station and share bearer reconstruction request message, notify the second base station again for the business receiving terminal of its management is set up descending shared carrying.In message, carry: the qos parameter that trunked call service that call identification (group number), call priority, type of service are video is corresponding, the IP of M-PDS and M-PDS are the T1-TEID corresponding with this second base station that trunked call service distributes.
Step 317, the qos parameter that trunked call service that the second base station is video according to type of service is corresponding, for the business receiving terminal of its management re-establishes descending shared carrying, deletes original descending shared carrying (for voice).
Step 318, the second base station send user to C-PDS and share bearer reconstruction response message, and the descending shared carrying of the business receiving terminal of this second BTS management of notice C-PDS is set up complete.In message, carrying this second base station is the T1-TEID that trunked call service is redistributed.
Step 319, C-PDS send and revise carrying change request to M-PDS, in message, carrying the second base station is the T1-TEID that trunked call service is redistributed, and request M-PDS revises the medium surface bearing resource (revising T1-TEID corresponding to the second base station) of trunked call service corresponding to the second base station.
It is pointed out that in M-PDS and preserved two T1-TEID corresponding to the second base station, one is that M-PDS is the corresponding T1-TEID in the second base station that trunked call service distributes; One is that the second base station is the T1-TEID that trunked call service distributes.What here, request M-PDS revised is that the second base station is the T1-TEID that trunked call service distributes.
It is that the T1-TEID that trunked call service is redistributed modifies that step 320, M-PDS revise second base station of carrying in carrying change request message by corresponding T1-TEID, the foundation in second base station of originally preserving, and returns and revise carrying variation response message to C-PDS.
When step 314-320 is type of service variation, the process of descending shared carrying is set up for all business receiving terminals again in the second base station.
Above-mentioned steps 303～313 and step 314～320th, parallel carrying out.
Step 321～323, C-PDS sends service authorization message to business transmitting terminal, and sends service informing information, prompt service type change to all business receiving terminals.
Step 324, video media stream starts transmission.
In actual arranging net, a C-PDS can dispose a plurality of M-PDS, when trunked call is set up, after C-PDS completes calling terminal (initiating the group member terminal of trunked call service) authentication, according to the call informations such as calling GID that carry in authentication responses, determine to forward the M-PDS of this trunked call Media Stream, the IP address of this M-PDS or sign (ID) is number associated with this trunked call, a M-PDS of a trunked call use who guarantees at a C-PDS.
Figure 4 shows that in the inventive method embodiment, in cluster session, the realization flow figure of the broadband group service that the type of service of being initiated by DSS changes.
In this embodiment: prerequisite is that trunked call service is set up, DSS initiates the type of service change of trunked call service.Do not distinguish in this embodiment the first base station and the second base station, by DSS, carried out alternately, completing the foundation of the descending shared carrying of group member terminal in the base station under all group member terminals directly and in group.
Step 401, C-PDS is according to the base station of record (being the affiliated base station of group member terminal) list, for each base station, to the M-PDS that forwards trunked call service Media Stream, send carrying change request message, request M-PDS revises the T1 carrying of the trunked call service corresponding with each base station, in message, carries: the qos parameter that trunked call service that call identification (group number), call priority, type of service are video is corresponding and the information (such as identifying) of base station etc.Wherein, the information of the base station of carrying in this message, can comprise the information of all base stations, also can only comprise the information of a base station.
Step 402, M-PDS search self storage the trunked call service corresponding with base station medium surface bearing resource (here, medium surface bearing resource is the medium surface resource of above-mentioned T1 carrying), if search less than, the qos parameter that trunked call service that M-PDS is video according to type of service is corresponding, redistribute the medium surface bearing resource of the trunked call service corresponding with base station, to C-PDS, return and create carrying response message, wherein carrying M-PDS is the T1-TEID corresponding with base station that trunked call service distributes; If find, the medium surface bearing resource of the trunked call service that qos parameter, modification that trunked call service that M-PDS is video according to type of service is corresponding are corresponding with base station, and return to carrying variation response message to C-PDS, wherein carrying M-PDS is the T1-TEID corresponding with base station that trunked call service distributes.
It is pointed out that M-PDS is that trunked call service T1-TEID that distribute, that each base station is corresponding is different.
Step 403, C-PDS send user and share bearer reconstruction request message to base station, informing base station is again for the group member terminal of its management is set up descending shared carrying.In message, carry: the qos parameter that trunked call service that call identification (group number), call priority, type of service are video is corresponding, the IP of M-PDS and M-PDS are the T1-TEID corresponding with this base station that trunked call service distributes.
Step 404, the qos parameter that trunked call service that base station is video according to type of service is corresponding, for the group member terminal of its management re-establishes descending shared carrying, deletes original descending shared carrying (for voice).
Step 405, base station send user to C-PDS and share bearer reconstruction response message, and the descending shared carrying of the group member terminal of this BTS management of notice C-PDS is set up complete.In message, carrying this base station is the T1-TEID that trunked call service is redistributed.
Step 406, C-PDS send and revise carrying change request to M-PDS, in message, carrying base station is the T1-TEID that trunked call service is redistributed, and request M-PDS revises the medium surface bearing resource (revising T1-TEID corresponding to base station) of trunked call service corresponding to base station.
It is that the T1-TEID that trunked call service is redistributed modifies that step 407, M-PDS revise the base station of carrying in carrying change request message by corresponding T1-TEID, the foundation in the base station of originally preserving, and returns and revise carrying variation response message to C-PDS.
Step 408, C-PDS sends service informing information, prompt service type change to all group member terminals.
Step 409, video media flow transmission.
The implementation method based on broadband group service in LTE digital cluster system that the present invention proposes, adopts low-cost, scalable, configurable IP full wireless multi-media network framework, compatible existing group system.Utilize cluster dedicated bearing to transmit broadband traffic, met the requirement of broadband services to bandwidth, speed, time delay and real-time in group, guaranteed the real-time transmission of broadband services.In addition, in technical scheme of the present invention, adopt cluster service system to realize qos policy and control, reduce broadband wireless access subsystem load; Adopt many M-PDS to transmit broadband services, realized the real-time transmission of high speed broadband service in group; Business is carried out middle QoS and is changed real-time update carrying, support broadband services variation.
The above, be only preferred embodiment of the present invention, is not intended to limit protection scope of the present invention.
Claims (19)
1. an implementation method for broadband group service, is characterized in that, the type of service of the trunked call service of having set up is transformed to Second Type by the first kind, and the method also comprises:
The qos parameter corresponding according to the trunked call service of Second Type, trunking dispatching subsystem is revised the T1 carrying of described trunked call service corresponding to base station under group member terminal, and to notify described base station be that the described group member terminal of described BTS management re-establishes descending shared carrying;
After having re-established of described descending shared carrying, described trunking dispatching subsystem notifies the type of service of trunked call service described in described group member terminal to change.
2. the implementation method of broadband group service according to claim 1, is characterized in that, when the type of service that described trunking dispatching subsystem is initiated described trunked call service is transformed to Second Type by the first kind,
Described trunking dispatching subsystem is revised the T1 carrying of described trunked call service corresponding to the affiliated base station of group member terminal, comprising:
Chain of command dispatch server (C-PDS) in described trunking dispatching subsystem sends carrying change request message to the medium surface dispatch server (M-PDS) in described trunking dispatching subsystem, asks described M-PDS to revise the T1 carrying of the trunked call service corresponding with described base station; In described carrying change request message, carry: the qos parameter that the trunked call service of call identification, call priority, Second Type is corresponding and the sign of described base station;
Described M-PDS searches the medium surface resource of the T1 carrying corresponding with described base station of self storing, if search less than, M-PDS according to qos parameter corresponding to the trunked call service of Second Type, redistribute the medium surface resource of the T1 corresponding with described base station carrying, and return and create carrying response message to described C-PDS; If find, the medium surface resource that M-PDS carries according to the T1 corresponding with described base station of qos parameter corresponding to the trunked call service of Second Type, modification M-PDS storage, and return to carrying variation response message to C-PDS;
In described carrying variation response message, carrying M-PDS is the T1-TEID corresponding with described base station that trunked call service distributes.
3. the implementation method of broadband group service according to claim 2, is characterized in that, it is that the described group member terminal of described BTS management re-establishes descending shared carrying that described trunking dispatching subsystem is notified described base station, comprising:
Described C-PDS sends user and shares bearer reconstruction request message to base station, wherein carry: the qos parameter that the trunked call service of call identification, call priority, Second Type is corresponding, IP and the described M-PDS of described M-PDS are the T1-TEID corresponding with described base station that trunked call service distributes;
Described base station re-establishes descending shared carrying according to qos parameter corresponding to the trunked call service of Second Type, for the group member terminal of described BTS management, delete original descending shared carrying, and to described C-PDS, return to user and share bearer reconstruction response message, wherein carrying described base station is the T1-TEID that trunked call service is redistributed.
4. the implementation method of broadband group service according to claim 3, is characterized in that, after having re-established of described descending shared carrying, the method also comprises:
Described C-PDS sends and revises carrying change request message to M-PDS, and wherein carrying described base station is the T1-TEID that trunked call service is redistributed;
M-PDS is that T1-TEID and the described base station that trunked call service distributes is that the T1-TEID that trunked call service is redistributed modifies by the base station of preservation, and returns and revise carrying variation response message to C-PDS.
5. the implementation method of broadband group service according to claim 4, is characterized in that, described trunking dispatching subsystem notifies the type of service of trunked call service described in described group member terminal to change, and comprising:
Described C-PDS sends service informing information to all group member terminals in group, and the type of service of prompting trunked call service is transformed to Second Type.
6. according to the implementation method of broadband group service described in right 1, it is characterized in that, when the type of service that described group member terminal is initiated described trunked call service is transformed to Second Type by the first kind, the group member terminal that the type of service of initiating described trunked call service is transformed to Second Type by the first kind in business transmitting terminal ，Jiang group other group member terminals except described business transmitting terminal as business receiving terminal; Base station under described business transmitting terminal is as the first base station, and the base station under described business receiving terminal is as the second base station, and described the second base station has one or more.
7. according to the implementation method of broadband group service described in right 6, it is characterized in that, described trunking dispatching subsystem is revised the T1 carrying of described trunked call service corresponding to the affiliated base station of group member terminal, comprising:
Chain of command dispatch server (C-PDS) in described trunking dispatching subsystem sends carrying change request message to the medium surface dispatch server (M-PDS) of the Media Stream of trunked call service described in described trunking dispatching subsystem repeating, asks described M-PDS to revise the T1 carrying of the trunked call service corresponding with described the second base station; In described carrying change request message, carry: the qos parameter that the trunked call service of call identification, call priority, Second Type is corresponding and the sign of the second base station;
Described M-PDS searches the medium surface resource of the T1 carrying corresponding with the second base station of self storing, if search less than, M-PDS according to qos parameter corresponding to the trunked call service of Second Type, redistribute the medium surface resource of the T1 corresponding with the second base station carrying, and return and create carrying response message to described C-PDS; If find, the medium surface resource that M-PDS carries according to the T1 corresponding with the second base station of qos parameter corresponding to the trunked call service of Second Type, modification M-PDS storage, and return to carrying variation response message to C-PDS;
In described carrying variation response message, carrying M-PDS is the T1-TEID corresponding with the second base station that trunked call service distributes.
8. the implementation method of broadband group service according to claim 7, is characterized in that, it is that the described group member terminal of described BTS management re-establishes descending shared carrying that described trunking dispatching subsystem is notified described base station, comprising:
Described C-PDS sends user to the second base station and shares bearer reconstruction request message, wherein carries: the qos parameter that the trunked call service of call identification, call priority, Second Type is corresponding, IP and the described M-PDS of described M-PDS are the T1-TEID corresponding with the second base station that trunked call service distributes;
Described the second base station re-establishes descending shared carrying according to qos parameter corresponding to the trunked call service of Second Type, for the business receiving terminal of described the second BTS management, delete original descending shared carrying, and to described C-PDS, return to user and share bearer reconstruction response message, wherein carrying the second base station is the T1-TEID that trunked call service is redistributed.
9. the implementation method of broadband group service according to claim 8, is characterized in that, after having re-established of described descending shared carrying, the method also comprises:
Described C-PDS sends and revises carrying change request message to M-PDS, and wherein carrying the second base station is the T1-TEID that trunked call service is redistributed;
M-PDS is that T1-TEID, described the second base station of foundation that trunked call service distributes is that the T1-TEID that trunked call service is redistributed modifies by the second base station of preservation, and returns and revise carrying variation response message to C-PDS.
10. the implementation method of broadband group service according to claim 9, is characterized in that, described trunking dispatching subsystem notifies the type of service of trunked call service described in described group member terminal to change, and comprising:
Described C-PDS sends service informing information to all business receiving terminals in group, and sends authorization messages to described business transmitting terminal, and the type of service of prompting trunked call service is transformed to Second Type.
11. implementation methods of broadband group service according to claim 10, is characterized in that, before described trunking dispatching subsystem is revised the T1 carrying of described trunked call service corresponding to base station under group member terminal, the method also comprises:
Described trunking dispatching subsystem is set up up carrying for described business transmitting terminal again, and again for all business receiving terminals, sets up descending shared carrying.
12. according to the implementation method of broadband group service described in claim 11, it is characterized in that, described trunking dispatching subsystem is set up up carrying for described business transmitting terminal again, comprising:
Described C-PDS sends carrying change request message to described M-PDS, the T1 that asks described M-PDS to revise the trunked call service corresponding with described the first base station carries, and in described carrying change request message, carries: the qos parameter that the trunked call service of call identification, call priority, Second Type is corresponding and the sign of described the first base station;
Described M-PDS searches the medium surface resource of the T1 carrying corresponding with described the first base station of self storing, if search less than, M-PDS according to qos parameter corresponding to the trunked call service of Second Type, redistribute the medium surface resource of the T1 corresponding with described the first base station carrying, and return and create carrying response message to described C-PDS; If find, the medium surface resource that M-PDS carries according to the T1 corresponding with described the first base station of qos parameter corresponding to the trunked call service of Second Type, modification M-PDS storage, and return to carrying variation response message to C-PDS; In described carrying variation response message, carrying M-PDS is the T1-TEID corresponding with described the first base station that trunked call service distributes;
Described C-PDS sends user's dedicated bearer to described the first base station and sets up request message, wherein carries: the qos parameter that the trunked call service of the sign of described business transmitting terminal, call identification, call priority, Second Type is corresponding, IP and the M-PDS of described M-PDS are the T1-TEID corresponding with the first base station that trunked call service distributes;
Described the first base station, according to qos parameter corresponding to the trunked call service of Second Type, to described business transmitting terminal transmission RRC connection reconfiguration message, is revised the RRC having set up and is connected;
Described business transmitting terminal sends RRC connection to described the first base station and has reshuffled message, confirms that RRC connects reprovision and completes;
Described the first base station sends user's dedicated bearer to described C-PDS and sets up response message, and the up carrying of business transmitting terminal has been set up described in notice C-PDS; Described user's dedicated bearer is set up and carried described the first base station in response message is the T1-TEID that trunked call service is redistributed.
13. according to the implementation method of broadband group service described in claim 11, it is characterized in that, again for all business receiving terminals, sets up descending shared carrying, comprising:
Described C-PDS sends user to described the first base station and shares bearer reconstruction request message, wherein carries: the qos parameter that the trunked call service of call identification, call priority, Second Type is corresponding, IP and the described M-PDS of described M-PDS are the T1-TEID corresponding with described the first base station that trunked call service distributes;
Described the first base station is according to qos parameter corresponding to the trunked call service of Second Type, re-establish descending shared carrying for described all business receiving terminals, delete original descending shared carrying, and to described C-PDS, return to user and share bearer reconstruction response message, notify the descending shared carrying of all business receiving terminals of described C-PDS to set up; In the shared bearer reconstruction response message of described user, carrying described the first base station is the T1-TEID that trunked call service is redistributed.
14. according to the implementation method of broadband group service described in claim 11, it is characterized in that, described trunking dispatching subsystem is set up up carrying for described business transmitting terminal again, and is that before all business receiving terminals are set up descending shared carrying, the method also comprises again:
The type of service that described business transmitting terminal is initiated described trunked call service is transformed to Second Type by the first kind;
Described trunking dispatching subsystem is initiated the authentication process of type of service conversion.
15. according to the implementation method of broadband group service described in claim 14, it is characterized in that, the type of service that described business transmitting terminal is initiated described trunked call service is transformed to Second Type by the first kind, comprising:
Described business transmitting terminal sends business request information to described C-PDS, the type of service of request trunked call service is transformed to Second Type by the first kind, carries: the sign of business transmitting terminal, call model, type of service and called number in described business request information;
Described call model is for being designated as trunked call; Described type of service is designated as described Second Type.
16. according to the implementation method of broadband group service described in claim 14, it is characterized in that, described trunking dispatching subsystem is initiated the authentication process of type of service conversion, comprising:
Described C-PDS initiates authentication process to the home location register (PHR) in trunking dispatching subsystem, according to the relevant information of the legitimacy of preserving in described PHR and authority, the legitimacy of described business transmitting terminal is judged and the authority whether all group member terminals in described group have a trunked call service of carrying out Second Type is judged;
If all group member terminals have the authority of the trunked call service of carrying out Second Type in the legal ,Qie of described business transmitting terminal group, authentication is passed through.
17. according to the implementation method of broadband group service described in claim 16, it is characterized in that, when described authentication is passed through, the method also comprises:
The information that described C-PDS obtains business transmitting terminal from described PHR, comprising: the user right of business transmitting terminal and qos parameter corresponding to Second Type trunked call service.
The system that realizes of 18. 1 kinds of broadband group services, it is characterized in that, this system applies is when the type of service of the trunked call service of having set up is transformed to Second Type by the first kind, comprise: trunking dispatching subsystem, broadband wireless access subsystem and group member terminal, described broadband wireless access subsystem comprises base station; Wherein:
Described trunking dispatching subsystem, for revising the T1 carrying of described trunked call service corresponding to base station under group member terminal, and to notify described base station be that the described group member terminal of described BTS management re-establishes descending shared carrying;
Described base station, is used to the described group member terminal of described self-management to re-establish descending shared carrying;
Described trunking dispatching subsystem, also for after having re-established of described descending shared carrying, notifies the type of service of trunked call service described in described group member terminal to change.
19. according to the system that realizes of broadband group service described in claim 18, it is characterized in that,
Described group member terminal, is also transformed to Second Type for initiating the type of service of described trunked call service by the first kind; Or,
Described trunking dispatching subsystem, is also transformed to Second Type for initiating the type of service of described trunked call service by the first kind.
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| CN111277964B (en) * | 2020-01-22 | 2022-04-01 | 北京市万格数码通讯科技有限公司 | Random access method for mobile terminal in high concurrency state of PDT system |
| CN111277964A (en) * | 2020-01-22 | 2020-06-12 | 北京市万格数码通讯科技有限公司 | Random access method for mobile terminal in high concurrency state of PDT system |
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Effective date of registration: 20210303 Address after: 801-6, 8 / F, building 52, 2 Jingyuan North Street, Beijing Economic and Technological Development Zone, Daxing District, Beijing Patentee after: Beijing ZTE Gundam Communication Technology Co.,Ltd. Address before: 518057 Ministry of justice, Zhongxing building, South Science and technology road, Nanshan District hi tech Industrial Park, Shenzhen, Guangdong Patentee before: ZTE Corp. |