WO2009026761A1

WO2009026761A1 - Method for controlling multi-bearer shared ambr

Info

Publication number: WO2009026761A1
Application number: PCT/CN2007/003809
Authority: WO
Inventors: Lin Liu; Jinguo Zhu; Zaifeng Zong; Min Fang
Original assignee: Zte Corporation
Priority date: 2007-08-28
Filing date: 2007-12-26
Publication date: 2009-03-05
Also published as: CN101325805B; CN101325805A

Abstract

A method for controlling multi-bearer shared AMBR is provided, which includes the steps of: step 1, when establishing the first AMBR-shared bearer from a user terminal to a packet data network, a mobility management entity sending the AMBR shared by the bearer to a base satiation; and step 2, when establishing the other AMBR-shared bearer, the mobility management entity sending to the base station the associated information of the other bearer with respect to the AMBR-shared bearer. Therefore, with the invention, the AMBR sharing information could be transmitted via the SI-MME interface, so as to allow the eNB to perform the control over themulti-bearer shared AMBR.

Description

TECHNICAL FIELD The present invention relates to the field of mobile communications, and more particularly to a control method for multi-bearer shared AMBR. BACKGROUND OF THE INVENTION With the emergence of Wimax (World Interoperability for Microwave Access), third-generation mobile communication systems must maintain their strong competitiveness in the field of mobile communications, and must improve their network performance and Reduce network construction and operating costs. Therefore, the 3GPP (3rd Generation Partnership Project) standardization working group is currently working on PS Core (Packet Switch Core, Packet Switch Core) and UTRAN (Universal Mobile Telecommunication System Radio Access Network, Global Mobile) The evolution of the communication system radio access network, the subject of this research is called System Architecture Evolution (SAE), in order to make the evolved PS Core (E-PS Core) provide higher transmission rate. Shorter transmission delays, optimized packetization, and mobility management between E-UTRAN (Evolved UTRAN, Evolved UTRAN), UTRAN, WLAN (Wireless Local Area Network) and other non-3GPP access networks . This evolved mobile communication system is called EPS (Evolved Packet System). Its basic architecture is shown in Figure 1, which mainly includes the following network elements:

E-UTRAN (Evolved UTRAN) is composed of eNodeB (E-UTRAN NodeB), which provides radio resources for user access;

MME (Mobility Management Entity) control plane function entity, a server that temporarily stores user data, responsible for managing and storing UE context (such as UE/user ID, mobility management status, user security parameters, etc.), and assigning temporary to users Identifying, when the UE is camped on the tracking area or the network is responsible for authenticating the user, processing all non-access stratum messages between the MME and the UE, triggering paging in the SAE, where the eNodeB and the MME The interface between them is an S 1 -MME interface;

HSS (Home Subscriber Server) is a home subscriber server that permanently stores user subscription data and provides authentication for users. The Serving GW (Gateway) is a monthly service gateway. The gateway is a user plane entity responsible for user plane data routing processing and terminating downlink data of the UE in idle state. Manage and store the SAE bearer context of the UE, such as IP bearer service parameters and network internal routing information, which is an anchor point of the internal user plane of the 3GPP system, and one user can only have one Serving GW at a time;

PDN (Packet Data Network) is a packet data network that provides services to users;

The PDN GW is a packet data network gateway, which is responsible for the gateway function of the UE accessing the PDN, and is a mobility anchor point of the 3GPP and non-3GPP access systems. In a mobile communication system, a service is provided by a bearer, and different services correspond to different bearers to meet different service requirements. To meet the requirements of the service, the bearer has many attributes, including rate and priority. The bearer in the EPS system is defined as an EPS bearer.

In the EPS system, the AMBR (Aggregate Maximum Bit Rate) is the maximum rate shared by multiple bearers of the same user. Multiple EPS bearers connected to the same PDN (Packet Data Networks) can share the same AMBR. When other EPS bearers are not available. When transmitting data, each of these EPS bearers can use all of this AMBR. AMBR limits the sum of the rates that all EPS bearers sharing this AMBR can provide. The eNB is to perform uplink and downlink AMBR control. The AMBR of the UE to the different PDNs is the subscription information of the UE, and is stored in the HSS. When the UE accesses the network, the HSS brings the MME to the MME. The MME keeps the AMBR information during the connection between the UE and the network. When the EPS Bearer is established, the core network determines whether the Bearer shares the AMBR with other Bearers connected to the same PDN according to the attributes of the Bearer. A UE may have multiple PDN connections. There may be one AMBR to each PDN connection. Therefore, one UE has multiple AMBRs. The sharing relationship of the EPS bearer to the AMBR is determined on the core network side. The eNB controls all EPS bearers. The sum of the actual rates does not exceed the AMBR. Therefore, the relationship of the EPS bearer shared AMBR needs to be transmitted from the MME on the network side to the eNB through the S1-MME interface. Currently, there is no effective method for transmitting the AMBR shared control information on the S1-MME interface. SUMMARY OF THE INVENTION In view of the above problems, the present invention provides a multi-bearer shared AMBR control method, which delivers AMBR shared information through an S1-MME interface, so that an eNB can implement control of a multi-bearer shared AMBR. The present invention provides a multi-bearer shared AMBR control method, including the following steps: Step 1: When establishing a load from a user terminal to a first shared AMBR of a packet data network, the mobility management entity sends the bearer shared AMBR to Base station; and step 2, when establishing another bearer sharing the AMBR, the mobility management entity sends the association information of another bearer and the bearer sharing the AMBR to the base station. In step 2, the following processing is also performed: After acquiring the associated information, the base station learns the bearer of the shared AMBR that has been established. After the base station learns the bearer that has been established to share the AMBR, the bearer information is saved by the base station, so that the bearer information of all the shared AMBRs that have been established is obtained. In addition, after the base station learns the bearer information of all the shared AMBRs that have been established, the newly-built bearer and all the shared AMBR bearers are shared together to share the AMBR. The association information may be the bearer identifier of the bearer of the shared AMBR, the bearer tunnel interface downlink endpoint identifier of the established shared AMBR, and the AMBR identifier. In the method of the present invention, the following processing is also performed in step 1: The mobility management entity transmits the AMBR identity and the value of the AMBR to the base station together. In addition, the association information may also be a packet data network address or an access point name of the shared AMBR.

(Access Point Name, APN). In the first step, the following processing is also performed: The mobility management entity sends the packet data network address or the values of the APN and the AMBR to the base station. Other features and advantages of the invention will be set forth in the description which follows, and The objectives and other advantages of the invention will be realized and attained by the <RTI The drawings are intended to provide a further understanding of the invention, and are intended to be a part of the description of the invention. In the drawings: FIG. 1 is a basic network structure diagram of an EPS system in the prior art; FIG. 2 is a flowchart of a control method of a multi-bearer sharing AMBR according to the present invention; FIG. 3a is a first embodiment according to the present invention. A flow diagram of a first load setup process in a multi-bearer shared AMBR control method; FIG. 3b is a flow diagram of a second bearer setup process in a multi-bearer shared AMBR control method according to the first embodiment of the present invention; 4a is a flow diagram of a first load setup process in a multi-bearer shared AMBR control method according to a second embodiment of the present invention; and FIG. 4b is a multi-bearer shared AMBR according to a second embodiment of the present invention; The flow diagram of the second planting process in the control method. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS The preferred embodiments of the present invention are described with reference to the accompanying drawings. 2 is a flowchart of a method for controlling a multi-bearer shared AMBR according to the present invention. As shown in FIG. 2, the method includes the following steps: Step S202: Establish a bearer of a first shared AMBR from a user terminal to a packet data network. When the mobile management entity sends the shared AMBR to the base station, and in step S204, when establishing another bearer of the shared AMBR, the mobility management entity sends the association information of the other bearer and the bearer sharing the AMBR to the base station. In step S204, the following processing is also performed: After acquiring the association information, the base station learns the bearer of the shared AMBR that has been established. After the base station learns the already established load sharing the AMBR, it is saved by the base station. The bearer information is obtained, thereby acquiring bearer information of all established shared AMBRs. In addition, after the base station learns the bearer information of all the shared AMBRs that have been established, the newly-built bearer and all the bearers of the shared AMBR are controlled to share the AMBR. The association information may be the bearer identifier of the bearer of the shared AMBR, the bearer tunnel interface downlink endpoint identifier of the established shared AMBR, and the AMBR identifier. In the method of the present invention, the following processing is also performed in step S202: The mobility management entity transmits the AMBR identity and the value of the AMBR to the base station together. In addition, the association information may also be a packet data network address or an APN sharing the AMBR. In step S202, the following processing is also performed: The mobility management entity transmits the packet data network address or the values of the APN and the AMBR to the base station together. Specifically, the control method of multi-carrier sharing the AMBR ⁷ comprising the following steps: Step a, when the first shared AMBR Bearer establishment, the MME of the AMBR shared Bearer bring the eNB; two step, while other share the same AMBR Bearer Establishment The MME sends the association between the current Bearer and the already established Bearer that shares the same AMBR to the eNB. To implement the association, the MME can use the following method: Associated AMBR EPS Bearer ID), when the other Bearers sharing the same AMBR are established, the eNB is able to associate the identity of a Bearer that has been established to share the same AMBR with the eNB, so that the eNB can establish the new Bearer and the established share to be built. The Bearer of the same AMBR is associated; In the second mode, the Tunnel Endpoint Identifier X Associated AMBR EPS Bearer TEID is used when the other Bearer sharing the same AMBR is established. The downlink TEID of the S1-U interface of a Bearer sharing the same AMBR is brought to the eNB as an association, so that the eNB can build The new Bearer is associated with the Bearer that shares the same AMBR. The third method uses the same AMBR ID (AMBR ID). When other Bearers sharing the same AMBR are established, the shared AMBR identifier is associated with the eNB. The eNB can associate the new Bearer to be built with the already established Bearer that shares the same AMBR. In this way, the MME is required to bring the 4BR AMBR ID to the eNB when the first shared AMBR Bearer is established. In the fourth method, the shared AMBR PDN address (PDN Address) is used, and other Bearers sharing the same AMBR are established. When the PDN address of the shared AMBR is brought to the eNB as an association, the eNB can associate the new Bearer to be built with the Bearer that has been established to share the same AMBR. In this manner, the MME is required to share the AMBR in the first. When the Bearer is established, the 4 Mbps PDN address is also brought to the eNB; and in the fifth mode, the APN of the shared AMBR is used, and when the other Bearers sharing the same AMBR are established, the APN of the shared AMBR is brought to the eNB as an association, so that the eNB can The new Bearer to be built is associated with the Bearer that has been established to share the same AMBR. In this way, the MME is required to bring the APN to the eNB when the first shared AMBR Bearer is established. Step 3: The eNB saves one All the AMBRs of the UE and their associations. When the new Bearer is established, the multiple bearers sharing the same AMBR are associated by association. In the five methods of the second step, the eNB needs to separately save the following information: eNB save all the AMBR and share all the same AMBR already established

Bearer's identity; 2. The eNB stores all AMBRs and downlink TEIDs of all established Bearer S1-U interfaces sharing the same AMBR; 3. The eNB stores all AMBR and AMBR identifiers; 4. The eNB stores all AMBRs and The AMBR-related PDN Address; and 5. The eNB stores all AMBRs and AMBR-related APNs. DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS Hereinafter, preferred embodiments of the present invention will be described with reference to the accompanying drawings. Embodiment 1 FIG. 3a and FIG. 3b are flow diagrams showing a process of establishing a first bearer and a process of establishing a second bearer in a control method of a multi-bearer shared AMBR according to a first embodiment of the present invention. In this embodiment, two Bearers sharing the same AMBR are established, FIG. 3a is the first Bearer establishment process, and FIG. 3b is the second Bearer establishment process, when the second Bearer is built. When the MME 4 associated AMBR EPS Bearer ID is set as the first Bearer identifier, the eNB can associate the new Bearer to be established with the first Bearer that has been established. stand up. As shown in Figure 3a, the first Bearer is established as follows: S302: The UE sends an attach request message (Attach Request) to the eNB.

S304, an eNB 4 Attach Request message (Attach Request) 4 is sent to the MME;

S306. If the network side does not have a context of the UE, perform an authentication process.

S308. The MME initiates a location update (Update Location) to the HSS.

S310, the HSS and the MME perform Insert User Data (Incoming Subscriber Data), and the HSS informs the MME of the user's IMSI, the subscription data (including the AMBR), and the like, and obtains the MME confirmation;

S312, the HSS performs location update confirmation (Update Location Ack) to the MME; S314, the core network side bearer is established;

S316, the MME sends an attach accept message (Attach Accept) to the eNB, where the information about the bearer EPS Bearer 1 to be established is included, and the AMBR 1 shared by the EPS Bearer 1 is the first bearer established by the shared AMBR 1, in the message. Also carrying a shared AMBR 1;

S318. The eNB saves a correspondence between the AMBR 1 and the EPS Bearer 1;

S320. The eNB sends a radio bearer setup request message to the UE. S322. The UE sends a radio bearer setup response message to the eNB. (Radio Bearer

Establishment Response );

S324. The eNB sends an attach complete message (Attach Complete) to the MME;

S326, the MME and the Serving GW perform an update (Update Bearer), and bring the information returned by the eNB to the Serving GW. As shown in Figure 3b, the second Bearer is established as follows: S328, the network side initiates a Create Dedicated Bearer Request;

S330, the MME sends a Bearer Setup Request message to the eNB, requesting to newly create an EPS Bearer 2, and the EPS Bearer 2 also shares the AMBR 1. The MME includes the related AMBR EPS in the information of the EPS Bearer 2 (Associated AMBR) EPS Bearer ID), whose value is the logo of EPS Bearer 1;

S332, the eNB only finds the AMBR 1 corresponding to the EPS Bearer 1 through the EPS Bearer 1 according to the corresponding relationship between the saved AMBR 1 and the EPS Bearer 1, so that the 4 bar EPS Bearer 2 and the AMBR 1 are associated;

S334. The eNB sends a radio bearer setup request message to the UE.

S336. The UE sends a radio bearer setup response message to the eNB.

S338. The eNB returns a Bearer Setup Response message to the MME, and S340, Create Dedicated Bearer Response. It should be understood that, in the foregoing Embodiment 1, the related AMBR EPS Bearer ID is used for association, and of course, the downlink TEID of the Sl-U interface carried by the associated AMBR EPS may be used instead. Associated AMBR EPS Bearer TEID ). For example, S330 is changed to: The MME sends a bearer setup request message to the eNB (Bearer Setup)

Request), request to create a new EPS Bearer 2, EPS Bearer 2 also shares AMBR 1, MME contains the downlink TEID ( Associated AMBR EPS Bearer TEID) of the related AMBR EPS bearer in the information of EPS Bearer 2, its value It is the downlink TEID of the EPS-based interface of the EPS Bearer 1. Embodiment 2 FIG. 4a and FIG. 4b are flow diagrams showing a process of establishing a first bearer and a process of establishing a second bearer in a control method of a multi-bearer shared AMBR according to a second embodiment of the present invention. In this embodiment, two Bearers sharing the same AMBR are established, FIG. 4a is the first Bearer establishment process, and FIG. 4b is the second Bearer establishment process. When the first Bearer is established, the MME sets the AMBR and The AMBR ID (AMBR ID) is brought to the eNB. When the second Bearer is established, the MME brings the AMBR ID (AMBR ID) to the eNB, so that the eNB can associate the new Bearer to be built with the first Bearer that has been established. . As shown in Figure 4a, the first Bearer is established as follows:

S402. The UE sends an attach request message (Attach Request) to the eNB.

S404, the eNB 4 Attach Request message is forwarded to the MME;

S406, if the network side does not have the context of the UE, perform an authentication process; S408, the MME initiates a location update (Update Location) to the HSS;

S410, the HSS and the MME perform Insert User Data (Incoming Subscriber Data), and the HSS informs the MME of the user's IMSI, the subscription data (including the AMBR), and the like, and obtains the MME confirmation;

S412, the HSS performs location update confirmation (Update Location Ack) to the MME; S414, the core network side is established;

S416, the eNB sends an attach accept message (Attach Accept), which contains the information of the EPS Bearer 1 to be established, the EPS Bearer 1 shares the AMBR 1, and the EPS Bearer 1 is the first bearer established by the shared AMBR 1, and the message is also Carrying the shared AMBR 1 and its identity AMBR ID 1; S418, the eNB saves the correspondence between AMBR 1 and AMBR ID 1;

S420. The eNB sends a radio bearer setup request message to the UE.

S422, the UE sends a radio bearer setup response message to the eNB; S424, the eNB sends an attach complete message (Attach Complete) to the MME;

S426, the MME and the Serving GW perform a bearer update (Update Bearer), which will be eN«^ The returned information is brought to the Serving GW. As shown in Figure 4b, the second Bearer is established as follows:

S428, the network side initiates a Create Dedicated Bearer Request (Create Dedicated Bearer Request);

S430, the MME sends a Bearer Setup Request message to the eNB, requesting to create a new bearer EPS Bearer 2, and the EPS Bearer 2 also shares the AMBR 1 . The MME includes the shared AMBR identifier in the information of the EPS Bearer 2, and the value is the AMBR. ID 1;

S432, the eNB finds the corresponding AMBR 1 by using the AMBR ID 1 according to the saved correspondence between the AMBR 1 and the AMBR ID 1, thereby associating the EPS Bearer 2 with the AMBR 1;

S434. The eNB sends a radio bearer setup request message to the UE.

S436, the UE sends a radio bearer setup response message to the eNB (Radio Bearer Establishment Response);

S438, the eNB returns a Bearer Setup Response message to the MME; and S440, Create Dedicated Bearer Response. It should be understood that in the second embodiment, the AMBR identifier (AMBR ID) is used for association, and may also be changed to the PDN address corresponding to the AMBR (PDN Address), or may be changed to the APN corresponding to the AMBR. In summary, with the method of the present invention, the relationship between the AP and the EPS bearer sharing the AMBR can be transmitted from the MME on the network side to the eNB through the S1-MME interface, and the AMBR sharing control information can be transmitted on the S1-MME interface to achieve more Load sharing control of AMBR. The above are only the preferred embodiments of the present invention, and are not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

A control method for multi-carrier shared AMBR, characterized in that it comprises the following steps: Step 1: When establishing a bearer of a first shared AMBR from a user terminal to a packet data network, the mobility management entity will perform the bearer Transmitting the shared AMBR to the base station; and step 2, when establishing another bearer sharing the AMBR, the mobility management entity sends the association information of the another bearer and the bearer sharing the AMBR to the Base station. The method of claim 1 wherein, in step two, the following processing is further performed:

After acquiring the associated information, the base station learns the established sharing of the AMBR. The method according to claim 2, wherein in step two, the following processing is further performed:

After the base station learns the already-established bearer sharing the AMBR, the base station saves the seven-load information to obtain all the bearer information that has been established to share the AMBR. The method according to claim 3, wherein in step two, the following processing is further performed:

After the base station learns all the bearer information that has been established to share the AMBR, the new bearer is controlled to share the AMBR with all the bearers sharing the AMBR. The method according to claim 1, wherein the association information is an established identifier of the bearer sharing the AMBR. The method according to claim 1, wherein the association information is an established bearer channel interface downlink endpoint identifier of the bearer sharing the AMBR. The method according to claim 1, wherein the association information is the AMBR identifier.

8. The method according to claim 7, wherein in the step 1, the following processing is further performed:

The mobility management entity transmits the AMBR identity along with the value of the AMBR to the base station.

9. The method according to claim 1, wherein the association information is a packet data network address sharing the AMBR.

10. The method according to claim 1, wherein the association information is an access point name sharing the AMBR.

The method according to claim 9, wherein in the step 1, the following processing is further performed:

The mobility management entity sends the packet data network address and the value of the AMBR to the base station.

12. The method according to claim 10, wherein in the step 1, the following processing is further performed:

The mobility management entity transmits the access point name and the value of the AMBR to the base station.