CN1960522A - Method for carrying on service of multimedia broadcast / multicast - Google Patents

Abstract

The method comprises: when starting MBMS service, for the process of enabling the MBMS multicast service or disenabling MBMS multicast service, and for the process of renewing the routing area between SGSNs and the process of relocating SRNS, the MBMS registering/de-registering process is not checked such that the process of MBMS registering/de-registering from bottom to top is not existed any more.

Description

A kind of method of carrying on service of multimedia broadcast/multicast

Technical field

The present invention relates to the broadcast/group broadcast technology, refer to the method for a kind of carrying on service of multimedia broadcast/multicast (MBMS, Multimedia Broadcast/Multicast Service) especially.

Background technology

Along with the development of 3G (Third Generation) Moblie technology, 3G (Third Generation) Moblie can provide than the more service of high data rate of second generation mobile communication, thereby supports the multiple business form, downloads, browses at a high speed services such as Internet network such as visual telephone, picture.Wherein have a class business features to be: this business can be simultaneously give subscribed in the wireless network should business the user send such as weather forecast, news film, the sports tournament collection of choice specimens or the like.The characteristics of utilizing these business to send simultaneously, 3-G (Generation Three mobile communication system) have been introduced the notion of broadcast/group broadcast.

In the broadcasting/packet service, for an intermediate node, no matter its downstream comprises the node what expectations receive data, and its upstream node always sends a piece of data to this intermediate node; After this intermediate node is received data, the number of nodes that receives data according to its downstream expectation duplicates this data, and distribute this data to the node that each expectation of its downstream receives these data, like this, each bar branch of broadcasting/packet service transfer of data tree all has only a piece of data to transmit, take a transfer resource, the transfer of data of root node and its downstream node also is like this.The distinctive points of multicast service and broadcasting service only is: multicast service only sends corresponding information to the user who has subscribed to some information, and the broadcasting service then user of all in wireless network sends information.As seen from the above description, provide identical information to a large number of users simultaneously, can greatly save Internet resources by multicast/broadcast is professional.

Fig. 1 is the wireless network architecture schematic diagram that prior art is supported broadcasting/packet service, as shown in Figure 1, in the existing third generation partner program (3GPP), support the wireless network architecture of broadcasting/packet service to comprise: broadcast/multicast service center (BM-SC) is also referred to as the broadcasting/packet service server, BM-SC is by Gmb interface or Gi interface and service plane function (TPF) critical point GPRS Support Node (GGSN, Gateway GPRS Support Node) link to each other, a BM-SC can link to each other with a plurality of GGSN; GGSN links to each other by Gn/Gp interface and Serving GPRS Support Node (SGSN, Serving GPRS Support Node), and a GGSN can link to each other with a plurality of SGSN; SGSN can link to each other with universal mobile telecommunications system (UMTS) land radio access web (UTRAN) by the Iu interface, UTRAN links to each other with user terminal (UE) by the Uu interface then, SGSN also can strengthen wireless access network (GERAN) by Iu/Gb interface and global system for mobile communications (GSM) and link to each other, and GERAN links to each other with UE by Um Interface then.Wherein, GGSN and SGSN belong to the node in the core net in the wireless network (CN).

The network configuration that provides from Fig. 1 as can be seen, in order to support the MBMS business, in 3-G (Generation Three mobile communication system), increased mobile network functional entity one broadcast/multicast service center, be BM-SC, described BM-SC is the inlet of content provider/multicast broadcast source, be used for authorizing and initiating the MBMS business, and plan transmits the MBMS content to schedule at mobile network.In addition, on functional entitys such as UE, UTRAN, GERAN, SGSN, GGSN, increased the function relevant with MBMS.BM-SC for the MBMS customer service provide and transmission provides function.Can be used as an access point that in public land mobile net (PLMN), is used for MBMS content delivery, mandate and initiation MBMS bearer service, and can be used for scheduling and send the MBMS transmission.Fig. 2 is that prior art BM-SC forms schematic diagram, as shown in Figure 2, BM-SC is as a functional entity, be necessary for the MBMS customer service and exist, comprise five functions: member's function (Membership Function), session and sending function (Session And TransmissionFunction), agency and transfer function (Proxy And Transport Function), professional declaration function (Service Announcement Function) and safety function (Securlty Function).

MBMS comprises multicast pattern and broadcast mode, and wherein multicast pattern needs user's corresponding multicast group of contracting, and carries out activation of service, and produces corresponding charge information.Because it is different that multicast pattern and broadcast mode exist on business demand, cause also difference of operation flow separately, as shown in Figure 3 and Figure 4, Fig. 3 is the operation flow schematic diagram of MBMS multicast pattern, Fig. 4 is the operation flow schematic diagram of MBMS broadcast mode.

As shown in Figure 3, the processing procedure that relates to of MBMS multicast service comprises: it is that MBMS activating multicast service process, session begin (Session Start), MBMS notice (MBMS notification), data and transmit (Data transfer), conversation end (Session Stop) and user to withdraw from (Leaving) be MBMS deactivation group broadcast service process that signatory (Subscription), service declaration (Service announcement), user add (Joining).Wherein, signatory process is used for setting up the relation between user and the service supplier, allows the user subscribe to required MBMS service in advance; Service declaration process is used for promptly notifying user MBMS the relevant information of business by the current service that can provide of BM-SC declaration; User's adition process is a MBMS activating multicast service process, UE is in adition process, informing network self is ready to become the member of current multicast group, receives the data of corresponding MBMS business, and this adition process can be created the MBMS UE context of record UE information in the UE of network and adding multicast group; Session begins in the process, and BM-SC is ready to transfer of data, and informing network is set up the bearing resource of corresponding core net and Access Network; The MBMS notification procedure is used for being about to begin by RNC notice UE MBMS multicast conversation; In data transfer procedure, BM-SC transfers data to UE by the bearing resource that session begins to set up in the process, and all add multicast service or can receive the interested UE of broadcasting service; The conversation end process is used for the bearing resource that the session process that begins is set up is discharged; It is that MBMS deactivation group broadcast service process makes the subscriber in the group leave multicast group that the user withdraws from process, i.e. user's receiving multicast data no longer, and this process can be with corresponding MBMS UE context deletion.MBMS activating multicast service process and MBMS deactivation group broadcast service process are called two kinds of processing procedures in the MBMS multicast user state processing process.

As shown in Figure 4, processing procedure that the MBMS broadcasting service relates to and MBMS multicast service are similar, just before session begins, do not need to carry out signatory process and user's adition process, and, after conversation end, do not need to carry out the user and withdraw from process.

Wherein, MBMS activating multicast service process is the signaling procedure between MBMS user terminal and the network side, and this process is set up the MBMSUE context that is used for developing MBMS service for each user who carries out activation process between MBMS user terminal and network node such as SGSN, GGSN, BM-SC and BSC/RNC.In MBMS activating multicast service process, if the business of this MBMS user terminal application does not have record at network node, network node triggers the MBMS registration process so, be this MBMS user terminal and follow-up to the MBMS bearer context of the professional interested MBMS user terminal foundation of this MBMS multicast bear at this MBMS multicast bear business, like this, network node could transmit this MBMS bearer service, thereby makes this MBMS user terminal and the follow-up MBMS data that can receive this specific multicast MBMS bearer service to the professional interested MBMS user terminal of this MBMS multicast bear.

In MBMS deactivation group broadcast service process, for carrying out the MBMS UE context of user's deletion on MBMS user terminal, SGSN, GGSN, BM-SC and BSC/RNC of this MBMS deactivation group broadcast service process.If last user leaves a specific multicast MBMS bearer service, then relevant network node no longer needs to transmit this specific multicast MBMS bearer service, thereby trigger MBMS in relevant network node and go registration process, and delete on each relevant network node MBMS bearer context at this MBMS multicast bear business.

In addition, when a MBMS user terminal is carried out Routing Area Update and service SGSN change, trigger the inter-SGSN routing area update process, carry out the processing of MBMS bearer service.In inter-SGSN routing area update process process, need be to create corresponding MBMS UE context among the purpose SGSN at new SGSN, and former SGSN be among the SGSN of source the deletion corresponding MBMS UE context, if this MBMS user terminal be among the former SGSN last to the interested UE of this MBMS bearer service, then need initiate MBMS and go registration process, delete the last MBMS bearer context of former SGSN at this MBMS bearer service at former SGSN; Perhaps this MBMS user terminal is that first then need initiate the MBMS registration process to the interested UE of this MBMS bearer service among the new SGSN in new SGSN, sets up the MBMS bearer context at this MBMS bearer service.The inter-SGSN routing area update process is in detail referring to related protocol TS 23.060;

When SRNS Serving Radio Network Subsystem (SRNS) is also referred to as Serving Radio Network System reorientation and SGSN and changes, trigger SRNS repositioning process between SGSN.In this process, need in new SGSN, create corresponding MBMS UE context, and in former SGSN the deletion corresponding MBMS UE context, if this MBMS user terminal be among the former SGSN last to the interested UE of this MBMS bearer service, then need initiate MBMS and go registration process, delete the last MBMS bearer context of former SGSN at this MBMS bearer service at former SGSN; Perhaps this MBMS user terminal is that first then need initiate the MBMS registration process to the interested UE of this MBMS bearer service among the new SGSN in new SGSN, sets up the MBMS bearer context at this MBMS bearer service.The SRNS repositioning process is in detail referring to related protocol TS 23.060.

At present, when developing MBMS service, in above-mentioned four processing procedures is in MBMS activating multicast service process, MBMS deactivation group broadcast service process, inter-SGSN routing area update process and the SRNS repositioning process, all relate to and setting up or deletion MBMS UE context, and when setting up or deleting MBMS UE context, may cause that MBMS registers/go registration process.

From the processing of above-mentioned MBMS activating multicast service process, MBMS deactivation group broadcast service process, inter-SGSN routing area update process and SRNS repositioning process as seen, relevant network node is set up the MBMS bearer context of corresponding some MBMS bearer services, promptly trigger the opportunity of MBMS register flow path from bottom to top and initiate an activation down, perhaps have the user who needs to activate this MBMS bearer service for this network node; And when last user leaves, need carry out MBMS from bottom to top and remove register flow path, thereby delete the MBMS bearer context of corresponding some MBMS bearer services.

Generally, needs use MBMS to carry the MBMS business of propagating, and must be business very widely, and promptly this MBMS business must be considered to have a large number of users use, so just can save the radio open resource that finally takies.But, from the professional related processing procedure of present MBMS, in whole SGSN overlay area, decide wholely be carried on whether needs are set up in the network according to leaving of first user's adding and last user, caused very big waste, and such processing has improved the complexity of whole system design and realization, thereby causes the raising of equipment cost.

In order to reduce the complexity of developing MBMS service, reduce cost, improve the validity and the reliability of entire process process, the applicant has proposed a kind of method of multicast broadcast service registration and a kind of method of log-on multimedium broadcast/group broadcast service operation of realizing in related application.

Wherein, MBMS register method in the related application is: in the source and course node, be provided with and preserve the downstream node listing of this source and course node, from the source and course node begin to afterbody downstream stream node step by step each downstream stream node to self downstream node listing send multicast broadcast service registration request message; Each receives the bearer context of the downstream stream node establishment self of multicast broadcast service registration request message, preserves beared information.MBMS deregistering method in related application is: go in the register flow path at MBMS, after the downstream node of handling the MBMS business was received register requirement, removal request was removed the MBMS bearer context of the MBMS business registered.

Register/go process registration as can be seen from above-mentioned MBMS, it will no longer be from bottom to top flow process that MBMS registers/go registration process, but top-down independently flow process.

But, register/go registration process at MBMS in the above-mentioned related application at present, in developing MBMS service, do not provide with MBMS and register/go the processing method of registering relevant MBMS activating multicast service, MBMS deactivation group broadcast service, inter-SGSN routing area update and four processes of SRNS reorientation.Thereby the complexity that has caused the whole system design and realized causes the raising of equipment cost.

Summary of the invention

In view of this, main purpose of the present invention is to provide a kind of method of carrying on service of multimedia broadcast/multicast, this method comprises the method for MBMS multicast user state processing, the method for inter-SGSN routing area update and the method for Serving Radio Network System reorientation, make the MBMS business can support top-down registration/deregistering method, thereby the complexity of correlation procedure in the simplification developing MBMS service reduces equipment cost.

For achieving the above object, technical scheme of the present invention specifically is achieved in that

The method of a kind of carrying on service of multimedia broadcast/multicast MBMS, in MBMS multicast user state processing, this method may further comprise the steps:

A1. GPRS Support Node GGSN in critical point receives the processing MBMS context request message from Serving GPRS Support Node SGSN, sends to BM-SC and handles MBMS UE context Indication message;

A2.BM-SC handles the MBMSUE context of self according to the processing MBMS UE context indication that receives, and returns to GGSN and handles MBMS UE context indication response message;

A3.GGSN handles MBMS UE context indication response according to this, handles the MBMS UE context of self, returns to SGSN and handles the MBMS context response information.

In the MBMS activating multicast service, before steps A 1, this method also comprises: described SGSN creates MBMS UE context;

Described processing MBMS context request message is for creating the MBMS context request message; Described processing MBMS context response information is for creating the MBMS context response information; Described processing MBMS UE context Indication message is the MBMS authorization request message; Described MBMS UE context indication response message is the MBMS authorization response message;

The MBMS UE context of described processing self is for creating the MBMS UE context of self.

In the MBMS deactivation group broadcast service, after steps A 3, this method also comprises: described SGSN receives and handles the MBMS context response information, the MBMS UE context that deletion is corresponding;

Described processing MBMS context request message is deletion MBMS context request message; Described processing MBMS context response information is deletion MBMS context response information; Described processing MBMS UE context Indication message is a MBMS deexcitation Indication message; Described MBMS UE context indication response message is a MBMS deexcitation acknowledge message;

The MBMS UE context of described processing self is the MBMS UE context of deletion self.

A kind of method of carrying out mbms service MBMS, in inter-SGSN routing area update, this method may further comprise the steps:

B1. after new SGSN receives Routing Area Update request message from MBMS UE, current route of update MBMS UE and position;

B2. new SGSN is to MBMS UE update notifications result.

A kind of method of carrying out mbms service MBMS, in SRNS Serving Radio Network Subsystem SRNS reorientation, this method may further comprise the steps:

C1. after former SGSN receives RELOCATION REQUEST message from former BSC/RNC, carry out the BSC/RNC migration and realize the SRNS reorientation;

C2. new SGSN is to MBMS UE notice reorientation result.

As seen from the above technical solution, the present invention is when developing MBMS service, to register relevant MBMS multicast user state processing process be MBMS activating multicast service or MBMS deactivation group broadcast service and inter-SGSN routing area update process and SRNS repositioning process for registering with MBMS/going, whether each relevant network node does not reexamine carries out MBMS and registers/go registration process, also no longer exists MBMS from bottom to top to register/go registration process simultaneously.The inventive method has been simplified the complexity of correlation procedure in the developing MBMS service, has reduced equipment cost.

Description of drawings

Fig. 1 is the wireless network architecture schematic diagram that prior art is supported broadcasting/packet service;

Fig. 2 is that prior art BM-SC forms schematic diagram;

Fig. 3 is the operation flow schematic diagram of MBMS multicast pattern;

Fig. 4 is the operation flow schematic diagram of MBMS broadcast mode;

Fig. 5 is a MBMS activating multicast service process dependence diagram of the present invention;

Fig. 6 is a MBMS deactivation group broadcast service process dependence diagram of the present invention;

Fig. 7 is an inter-SGSN routing area update process dependence diagram of the present invention;

Fig. 8 is a SRNS reorientation dependence diagram of the present invention.

Embodiment

Core concept of the present invention is: in MBMS multicast user state processing, after GGSN receives processing MBMS context request message from SGSN, send to BM-SC and to handle MBMS UE context Indication message; BM-SC is according to the indication of the processing MBMS UE context that receives, handles behind self the MBMS UE context to return to GGSN and handles MBMS UE context indication response message; GGSN handles MBMS UE context indication response according to this, handles the MBMS UE context of self and returns processing MBMS context response information to SGSN.In inter-SGSN routing area update, after new SGSN receives Routing Area Update request message from MBMS UE, current route of update MBMS UE and position; New afterwards SGSN is to MBMS UE update notifications result.In the SRNS reorientation, after former SGSN receives RELOCATION REQUEST message from former BSC/RNC, carry out the BSC/RNC migration and realize the SRNS reorientation; New afterwards SGSN is to MBMS UE notice reorientation result.The inventive method has been simplified the complexity of correlation procedure in the developing MBMS service, has reduced equipment cost.

For making purpose of the present invention, technical scheme and advantage clearer, below with reference to the accompanying drawing preferred embodiment that develops simultaneously, the present invention is described in more detail.

Fig. 5 is a MBMS activating multicast service process dependence diagram of the present invention, as shown in Figure 5, may further comprise the steps:

Step 501:SGSN creates MBMS UE context, and sends establishment MBMS context request (Create MBMS Context Request) message to GGSN.

According to the agreement regulation, carry IP multicast address, APN, MBMS_NSAPI, IMSI, MSISDN, RAI, IMEI-SV, RAT Type, MS Time Zone, CGI/SAI, Trace Reference, Trace Type, Trigger Id, OMC Identity and Additional MBMS Trace Info etc. in this establishment MBMS context request message.If GGSN follows the trail of and is activated, also comprise in this establishment MBMS context request message and follow the trail of reference, tracking type, triggering Id and OMC sign.If BM-SC follows the trail of and is activated, also comprise additional MBMS tracked information in this establishment MBMS context request message.

SGSN can duplicate and follow the trail of reference, follow the trail of type and OMC sign from the MBMS tracked information, the MBMS tracked information is that SGSN obtains from HLR or OMC, whether carry CGI/SAI in this MBMS tracked information, the regulation in the 15.1.1a joint that need follow at TS 23.060.

Step 502:GGSN sends MBMS authorization requests (MBMS AuthorizationRequest) message to BM-SC; BM-SC creates MBMS UE context, and carries in returning the MBMS authorization response of GGSN (MBMS Authorization Response) message and authorize decision.

According to the agreement regulation, carry IMSI, MSISDN, RAI, IMEI-SV, RAT Type, MS Time Zone, CGI/SAI and Additional MBMS TraceInfo etc. in this MBMS authorization request message.This MBMS authorization request message is used for obtaining mandate to the MBMS UE that is activating from BM-SC.

If BM-SC follows the trail of and is activated, also comprise additional MBMS tracked information in this MBMS authorization request message, this MBMS tracked information can also comprise CGI/SAI.

After step 503:GGSN receives the MBMS authorization response message, create MBMS UE context, and send establishment MBMS context response (Create MBMS Context Response) message to SGSN.

From related procedure shown in Figure 5 as seen, do not reexamine on relevant network node such as SGSN, the GGSN and whether carry out the MBMS registration process, no longer have MBMS registration process from bottom to top simultaneously yet, simplified the realization of MBMS activating multicast service process.

Fig. 6 is a MBMS deactivation group broadcast service process dependence diagram of the present invention, as shown in Figure 6, may further comprise the steps:

Step 601:SGSN receives that deexcitation MBMS context is admitted or after other was ready, SGSN sent deletion MBMS context request to there being the contextual GGSN of MBMS UE;

After step 602:GGSN receives deletion MBMS context request, delete corresponding MBMS UE context and send MBMS deexcitation indication to BM-SC, BMSC deletes corresponding MBMS UE context after receiving MBMS deexcitation indication, returns MBMS deexcitation acknowledge message to GGSN afterwards.

After step 603:GGSN receives MBMS deexcitation acknowledge message, send deletion MBMS context response information to SGSN, SGSN deletes corresponding MBMS UE context after receiving this deletion MBMS context response information.

The difference of MBMS deactivation group broadcast service process and MBMS activating multicast service process only is that the former is a deletion MBMS UE context, and the latter creates MBMS UE context.From related procedure shown in Figure 6 as seen, do not reexamine on relevant network node such as SGSN, the GGSN and whether carry out MBMS and go registration process, no longer exist MBMS from bottom to top to go registration process simultaneously yet, simplified the realization of MBMS deactivation group broadcast service process.

Fig. 7 is an inter-SGSN routing area update process dependence diagram of the present invention, as shown in Figure 7, may further comprise the steps:

Step 701: after new SGSN receives Routing Area Update request message from MBMS UE, current route of update MBMS UE and position.Specific implementation can repeat no more here referring to related protocol.

Step 702: new SGSN notifying MBMS UE routing update result.Specific implementation can repeat no more here referring to related protocol.

From related procedure shown in Figure 7 as seen, relevant network node such as former SGSN do not reexamine and whether carry out MBMS and go registration process, no longer exist MBMS from bottom to top to go registration process simultaneously yet; Do not reexamine whether carry out the MBMS registration process with stylish SGSN, no longer have MBMS registration process from bottom to top simultaneously yet, simplified the realization of inter-SGSN routing area update process.

Fig. 8 is a SRNS reorientation dependence diagram of the present invention, as shown in Figure 8, comprising:

Step 801: after former SGSN receives RELOCATION REQUEST message from former BSC/RNC, carry out the BSC/RNC migration and realize the SRNS reorientation.Specific implementation can repeat no more here referring to related protocol.

Step 802: new SGSN is to MBMS UE notice reorientation result.Specific implementation can repeat no more here referring to related protocol.

From related procedure shown in Figure 8 as seen, relevant network node such as former SGSN do not reexamine and whether carry out MBMS and go registration process, no longer exist MBMS from bottom to top to go registration process simultaneously yet; Do not reexamine whether carry out the MBMS registration process with stylish SGSN, no longer have MBMS registration process from bottom to top simultaneously yet, simplified the realization of SRNS reorientation.

The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.

Claims (5)

1. the method for a carrying on service of multimedia broadcast/multicast MBMS is characterized in that, in MBMS multicast user state processing, this method may further comprise the steps:

A1. GPRS Support Node GGSN in critical point receives the processing MBMS context request message from Serving GPRS Support Node SGSN, sends to BM-SC and handles MBMS UE context Indication message;

A2.BM-SC handles the MBMSUE context of self according to the processing MBMS UE context indication that receives, and returns to GGSN and handles MBMS UE context indication response message;

A3.GGSN handles MBMS UE context indication response according to this, handles the MBMS UE context of self, returns to SGSN and handles the MBMS context response information.

2. method according to claim 1 is characterized in that, in the MBMS activating multicast service, before steps A 1, this method also comprises: described SGSN creates MBMS UE context;

Described processing MBMS context request message is for creating the MBMS context request message; Described processing MBMS context response information is for creating the MBMS context response information; Described processing MBMS UE context Indication message is the MBMS authorization request message; Described MBMS UE context indication response message is the MBMS authorization response message;

The MBMS UE context of described processing self is for creating the MBMS UE context of self.

3. method according to claim 1 is characterized in that, in the MBMS deactivation group broadcast service, after steps A 3, this method also comprises: described SGSN receives and handles the MBMS context response information, the MBMS UE context that deletion is corresponding;

Described processing MBMS context request message is deletion MBMS context request message; Described processing MBMS context response information is deletion MBMS context response information; Described processing MBMS UE context Indication message is a MBMS deexcitation Indication message; Described MBMS UE context indication response message is a MBMS deexcitation acknowledge message;

The MBMS UE context of described processing self is the MBMS UE context of deletion self.

4. a method of carrying out mbms service MBMS is characterized in that, in inter-SGSN routing area update, this method may further comprise the steps:

B1. after new SGSN receives Routing Area Update request message from MBMS UE, current route of update MBMS UE and position;

B2. new SGSN is to MBMS UE update notifications result.

5. a method of carrying out mbms service MBMS is characterized in that, in SRNS Serving Radio Network Subsystem SRNS reorientation, this method may further comprise the steps:

C1. after former SGSN receives RELOCATION REQUEST message from former BSC/RNC, carry out the BSC/RNC migration and realize the SRNS reorientation;

C2. new SGSN is to MBMS UE notice reorientation result.

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