CN101075894B

CN101075894B - Method for repeating multi-medium broadcasting/packet broadcasting service

Info

Publication number: CN101075894B
Application number: CN200710122792XA
Authority: CN
Inventors: 刘美萍
Original assignee: ZTE Corp
Current assignee: ZTE Corp
Priority date: 2007-07-09
Filing date: 2007-07-09
Publication date: 2012-05-23
Anticipated expiration: 2027-07-09
Also published as: CN101075894A

Abstract

The method comprises: 1) the multimedia broad cast/multicast center (BM-SC) sends the information of rebroadcast to the radio access controller (RNC); RNC saves said rebroadcast information, and according to the rebroadcast information, re-receives and saves the multimedia content required to be rebroadcasted on its uplink serving GPRS supporting node (SGSN); 3) when the rebroadcast arrives, the RNC makes rebroadcast process according to the multimedia content to be rebroadcasted. By the invention, the RNC/BSC side can once receive the multimedia content, and rebroadcast the content in many time.

Description

A kind of multimedia broadcast/group broadcast service is realized the method for replay

Technical field

The present invention relates to the multi-medium broadcast/group broadcast field, relate in particular to the method that a kind of multimedia broadcast/group broadcast service is realized replay.

Background technology

Multi-medium broadcast/group broadcast (MBMS) is realized the point-to-multipoint service of a data source to a plurality of terminals transmission data.MBMS can not only realize the classes of messages multicast and the broadcasting of plain text low rate; And can also realize multicast and the broadcasting that high-speed multimedia is professional; MBMS is based on WCDMA (WCDMA)/TD-SCDMA (TD SDMA)/GSM (global system for mobile communications) Packet Based Network, through increasing some new functional entitys, for example; Broadcast multicast service center BM-SC; To existing packet domain functional entity, for example service general grouping service wireless GPRS Support Node (SGSN), Gateway GPRS Support Node (GGSN), radio network controller (RNC) and terminal (UE) increase the MBMS function, and have defined new logic shared channel and realize that interface-free resources shares.

The network reference model of MBMS is shown in accompanying drawing 1; Wherein MBMS center (BM-SC) is connected with gateway general grouping service wireless (GPRS) support node GGSN through Gmb (the chain of command interface between BM-SC and the GGSN) interface and Gi (the loading end interface between BM-SC and the GGSN) mouthful; A BM-SC can be connected with a plurality of GGSN; GGSN is through Gn/Gp (same mobile network the inside; Interface between GGSN and the SGSN is used the gn interface agreement; GGSN and SGSN are in different mobile network the insides, and GGSN use the gp interface agreement with the interface between the SGSN) interface with serve GRPS node SSGN and link to each other, a GGSN can link to each other with a plurality of SGSN; SGSN can link to each other with UMTS (UMTS) land radio access web (UTRAN) through the Iu interface; UTRAN links to each other with portable terminal through the Uu interface then, and SGSN also can strengthen wireless access network (GERAN) through Iu/Gb interface and global system for mobile communications (GSM) and link to each other, and GERAN links to each other with portable terminal through Um (GERAN is through the Um Interface agreement with the UE interface) interface.

The process of user's receiving multicast business is following:

User's subscription procedure (Subscription), this process are used for the user and order multicast service, set up the relation between user and the service supplier.

Service announcement process (Announcement), this process are used for to user's announcement service supplier which business being provided, and other professional relevant information.

User's adition process (Joining), this process are used for the user and add multicast group to the business network request.

Session begins process (Session Start), and this process is used for BM-SC and is ready for sending data.When BM-SC was ready for sending data, BM-SC initiated the MBMS session and begins process.Needed all bearing resources of network when this is requesting activation transmission MBMS data.And the data of notifying interested UE to be about to begin transmit.

Notification procedure (Notification), this process are used for RNC and notify user MBMS multicast will begin in a minute.

Data transmission procedure (Data transfer), this process are the processes of carrying out the multi-medium data transmission to the user.

Conversation end process (Session Stop), this process are used for BM-SC indication conversation end, releasing bearing resource.

Leave process (Leaving), this process is used for the user and does not prepare receiving multimedia broadcast, leaves the process of multicast group.

The business of user's receiving multimedia broadcast and group business stream path difference are not having the user of multicast to add with broadcasting service, and the user leaves process, and other process is all identical.

No matter be multi-media broadcasting service or multimedia multicast service, generally not once just to finish to be through with, but can replay repeatedly.Like popular competitive sports, after entertainment is live at the scene, through regular meeting on the same day, the next morning, or replaying repeatedly a little a little later.Certainly after also having on-the-spot broadcasting, at a distance from replaying once more for a long time.

According to the implementation of existing multi-medium broadcast/group broadcast, if content supplier will replay repeatedly to certain content of multimedia, then BM-SC need be this content of multimedia through GGSN, SGSN, and RNC/BSC replays repeatedly to the user.Replay n time just needs to take BM-SC and GGSN, SGSN, the bandwidth between the RNC/BSC n time.Because multi-medium broadcast/group broadcast all is the business that accounts for very much Internet resources, even if bandwidth ratio is bigger, it is still very significant to save Internet resources.

Summary of the invention

The technical problem that the present invention will solve provides a kind of when carrying out MBMS CMMB multicast service, realizes the method for replay, reaches the purpose of saving Internet resources.

For this reason, the present invention proposes the method that a kind of multimedia broadcast/group broadcast service is realized replay, comprise the steps:

Step 1, multi-medium broadcast/group broadcast center are that BM-SC sends rebroadcast information to Radio Access Controller;

Step 2, Radio Access Controller are stored said rebroadcast information, according to said rebroadcast information, to the content of multimedia that needs are replayed, go the reception of node service general grouping service wireless support node place from it once, are stored in said Radio Access Controller;

Step 3, when the replay time arrived, Radio Access Controller obtained the content of multimedia of need the replaying processing of replaying from this locality.

Further, said method also can have following characteristics, and said Radio Access Controller is radio network controller or base station controller.

Further, said method also can have following characteristics, and said BM-SC obtains said rebroadcast information from the timetable of business guide or rebroadcast information table.

Further, said method also can have following characteristics, for the content of multimedia that the replay demand is arranged, sets up the Multimedia session process separately, and each conversation procedure includes only a kind of replay mode.

Further, said method also can have following characteristics, and in the said step 1, rebroadcast information begins request by BM-SC through sending session, and first packet that perhaps after session begins process, sends through the medium face sends to Radio Access Controller.

Further, said method also can have following characteristics, if rebroadcast information begins to ask to send through session, after then this session was set up, the data of sending at this conversation procedure all belonged to same content, and all the elements all need to replay; If being first packet that after session begins process, sends through the medium face, sends rebroadcast information; After then this session is set up; Only discern session and set up first packet that the back receives through the medium face; If this packet comprises rebroadcast information, then all the elements that receive in this conversation procedure are all needed to replay.

Further, said method also can have following characteristics, and said rebroadcast information comprises re-broadcast content sign, replay time and replay scope.

Further, said method also can have following characteristics, said replay scope, for broadcasting, then storage replays needs the scope of covering, with the first time range of transmission identical, for multicast, then store multicast address and APN.

Further, said method also can have following characteristics, and said step 1 also comprises, and rebroadcast information is informed the terminal through the business guide mode.

Further; Said method also can have following characteristics; Said rebroadcast information is as the sub-information notification user of the information of each content of multimedia in business guide the inside, or when the issuing service guide, informs the user with many content of multimedia; Promptly appear with many of a content, its broadcast time is different.

Further, said method also can have following characteristics, in the said step 2; Said Radio Access Controller receives resolution data packet header after session is set up, obtain service identification; According to service identification inquiry rebroadcast information; Whether needs are replayed to judge this content according to rebroadcast information, if desired, then this content of multimedia are kept in the said Radio Access Controller.

Further, said method also can have following characteristics, in the said step 3; Radio Access Controller inquiry rebroadcast information; To the content that needs after the fixed time to replay,, search the content of multimedia of local storage according to rebroadcast information; Send session and begin request and notice request, notify the user receiving multimedia broadcast/multicast.

Further, said method also can have following characteristics, and the replay of all multi-medium broadcast/group broadcasts is professional, and relevant charging flow need send to charging data function unit/Online Charging System to rebroadcast information in the MBMS center side.

The present invention can be through receiving a content in the RNC/BSC side when multimedia broadcast/group broadcast service realize is replayed, and realize function that this content is repeatedly replayed, thereby reach the purpose of practicing thrift a large amount of Internet resources between BM-SC and the RNC/BSC.

Description of drawings

Fig. 1 is the MBMS schematic network structure;

Fig. 2 is that BM-SC of the present invention begins to ask to carry the rebroadcast information flow chart through session;

Fig. 3 is that BM-SC of the present invention carries the rebroadcast information flow chart through the Gi interface;

Fig. 4 is the process chart of RNC/BSC of the present invention for rebroadcast information;

Fig. 5 is the process chart of RNC/BSC receiving multimedia content of the present invention;

Fig. 6 is the flow chart that RNC/BSC of the present invention realizes replay.

Embodiment

Below in conjunction with the accompanying drawing subordinate list implementation procedure of the present invention is described further.

The present invention is also referred to as business guide through the MBMS service announcement, informs the terminal use to which content replays, and whether the user can be according to own needs decision at replay time receiving multimedia broadcast or multicast.

The present invention begins request or after session begins process through BM-SC in session, and after RNC/BSC set up this session, first packet of each service identification that receives through the medium face was discerned; Whether discern the data that transmit in this conversation procedure need replay; Replay if desired, then RNC/BSC storage rebroadcast information comprises the replay time; The re-broadcast content sign, the information that replay scope or the like is replayed and needed to the user.The packet that RNC/BSC receives through the medium face is replayed if desired, then these packets is stored.RNC/BSC manages rebroadcast information, the replay time then, notify the user and send multimedia broadcasting or multicast information to the user.For multimedia broadcasting, the scope of replay is identical with the scope of this content of multimedia transmission for the first time, and for multimedia multicast, the scope of replay then is all users that add this multicast address in the replay time.Concrete steps of the present invention are following:

Step 1, multi-medium broadcast/group broadcast center are that BM-SC sends rebroadcast information to RNC/BSC;

Wherein, rebroadcast information sends session through BM-SC and begins request, when perhaps being Gi transmission data through the medium face, is sent to RNC/BSC.Comprise the re-broadcast content sign in the rebroadcast information, the replay time, the replay scope, for broadcasting, the replay scope is with range of transmission is identical for the first time, and for multicast, the replay scope need be stored multicast address and APN (APN).

For the content of multimedia that the replay demand is arranged, need set up the Multimedia session process separately, and each conversation procedure includes only a kind of replay mode.Also be that all content of multimedia adopt with a kind of replay mode.

RNC/BSC sends the rebroadcast information situation for the identification of rebroadcast information for begin request through session for ease, and after said session was set up, the data of transmission all belonged to same content, and all content of multimedia that send through this session all need to replay.

RNC/BSC is for the identification of rebroadcast information for ease; For the situation of sending rebroadcast information through the medium face; After said session is set up; Only discern session and set up first packet that the back receives through the medium face,, then all the elements that receive in this conversation procedure are all needed to replay if this packet comprises rebroadcast information.

Step 2, rebroadcast information is informed the terminal through the business guide mode;

Rebroadcast information can be used as the sub-information notification user of the information the inside of each content of multimedia in the business guide; Also can inform the user, that is, appear with many of a content of multimedia with many content of multimedia; Except broadcast time was inequality, other parameters were all identical.

Step 3, RNC/BSC stores said rebroadcast information, according to said rebroadcast information, to the content of multimedia that needs are replayed, goes the reception of node SGSN place from it once, is stored in the content storage apparatus of said RNC/BSC;

RNC/BSC also will preserve and set up multimedia broadcasting or the multicast needed information of replaying, and promptly replays and sets up the parameter that session needs.The said parameter of setting up the session needs begins to carry in the request in session.

Step 4, when the replay time arrived, RNC/BSC obtained the content of multimedia that replay needs, the processing of replaying from this locality.

RNC/BSC obtains the content of multimedia that need replay according to the content storage apparatus of replay information query RNC/BSC, notifies the user and sends multimedia broadcasting or multicast information to the user.

Rebroadcast information can utilize the Schedule table (timetable) in the business guide; Also can utilize special rebroadcast information admin table; Like table 1 is the rebroadcast information admin table in the multimedia broadcast/group broadcast service guide; Each content of multimedia that need replay has all had a record in business guide, this rebroadcast information table can be added in Content table (content of multimedia) lining.BM-SC business guide system provides the operation interface to manage the replay of content of multimedia, comprises the increase rebroadcast information, editor's replay time or deletion rebroadcast information.For fear of duplicate record, the information of replay just increases enters the original record of this content of multimedia the inside.

Table 1 rebroadcast information admin table

The parameter that increases	Parameter type
		Replay times	unsignedInt
Replay the time started [0]	unsignedInt
		Replay the concluding time [0]	unsignedInt
...	unsignedInt
		Replay the time started [n-1]	unsignedInt
Replay the concluding time [n-1]	unsignedInt

To be BM-SC begin to ask to carry the flow chart of rebroadcast information through session to Fig. 2, in conjunction with Fig. 2 this part described in further detail:

Step 100; BM-SC is before the transmission session begins the request beginning; Professional rebroadcast information in the inquiry business guide in the Schedule table if do not have rebroadcast information in the Schedule table, then is the rebroadcast information of search index in should the Content table of business with the service identification;

Step 110, whether judgement should business need to replay, and replays if desired, changes step 120 over to, otherwise, change step 130 over to;

Step 120, BM-SC judges whether to begin to carry rebroadcast information in the request in session, if, promptly begin to carry rebroadcast information in the request in session, change step 140 over to, otherwise, change step 130 over to;

Step 130, BM-SC begins request to the session that GGSN sends standard, does not carry rebroadcast information in this request, finishes.

Step 140, BM-SC sends session to GGSN and begins request message, and begins to carry in the request message rebroadcast information to this content of multimedia in session, finishes.

To be BM-SC carry the flow chart of rebroadcast information through the Gi interface to Fig. 3, in conjunction with Fig. 3 this part described in further detail:

Step 200; BM-SC sets up load plane after session begins request process, in the multimedia service transmitting time then; When sending first packet; Rebroadcast information in Schedule in the inquiry business guide table if rebroadcast information is not the Schedule table that is present in the business guide, then is the rebroadcast information that search index should business Content table with the service identification;

Step 210, whether judgement should business need to replay, and if desired, then changes step 220 over to, otherwise, change step 230 over to;

Step 220 is carried rebroadcast information in first packet that BM-SC judges whether after session is set up, to send through Gi, if, then change step 240 over to, otherwise, change step 230 over to;

Step 230, BM-SC sends the packet of standard to GGSN, does not carry rebroadcast information, finishes.

Step 240, BM-SC sends packet to GGSN, and carries the rebroadcast information to content of multimedia in first packet that after session begins process, sends through Gi.

The encapsulation of concrete packet content is referring to the 3GPP agreement, and the present invention has increased the parameter of replaying and requiring in the packet encapsulation content that has increased on the basis of prior protocols at Gi, comprise the replay time list, the professional sign of replaying, the scope of replay.

Fig. 4 is the handling process of RNC/BSC of the present invention for rebroadcast information, in conjunction with Fig. 4 this part is described in further detail:

Step 300, RNC/BSC begins request message or packet is resolved to session when receiving that session begins request message or after session begins process, receive first packet of each service identification through the medium face;

Step 310 judges whether to carry rebroadcast information according to 300 results that resolve, if, promptly carry rebroadcast information, change step 320 over to, otherwise, change step 330 over to;

Step 320, RNC/BSC is replay time list information, and re-broadcast content identifies; The replay scope; And multimedia broadcasting or the multimedia multicast needed information of replaying of setting up all is saved in local memory cell (parameter that session needs is set up in replay), finishes up to replay, changes step 340 over to;

Step 330 is handled according to the Multimedia session request or the packet of normal non-replay, keeps original handling process, finishes;

Step 340, the processing of back keep the processing of the flow process of the existing regulation of agreement, finish.

Fig. 5 is the handling process of RNC/BSC receiving multimedia content of the present invention, in conjunction with Fig. 5 this part is described in further detail:

Step 400, RNC/BSC after just load plane is set up successfully, receives the content of multimedia that GGSN sends after session is set up;

Step 410, RNC/BSC resolution data packet header obtains service identification; According to service identification inquiry rebroadcast information table, if after the load plane foundation, the first packet based multimedia content that receives; Then need carry out the rebroadcast information judgment processing, and need not inquire about the rebroadcast information table with reference to figure 4;

Step 420, inquiry obtains corresponding rebroadcast information according to service identification, and whether needs are replayed can to judge this content according to rebroadcast information, replay if desired, forward step 430 to, otherwise, forward step 440 to;

Step 430, then RNC/BSC stores this content of multimedia, in order to the needs of back repeating transmission;

Step 440 is to terminal use's repeating multimedia content.

Fig. 6 is the flow process that RNC/BSC of the present invention realizes replay, in conjunction with Fig. 6 this part is described in further detail:

Step 500, BM-SC is provided with timer the replay time that each does not also send in the rebroadcast information is carried out timing scan;

Step 510, judging whether to scan (the said fixed time is generally some seconds) after the fixed time needs the multimedia service replayed, if, change step 520 over to, otherwise, scanning continued;

Step 520, RNC/BSC obtains the content of multimedia that whole needs are replayed according to the content of multimedia sign of rebroadcast information from the memory device of this locality;

Step 530 is to the processing of replaying of this content;

It is multicast or broadcasting that the replay of content of multimedia issues according to this content, and corresponding bearing relation between foundation and the terminal, and carry out data and transmit, after this time replay finishes, the bearing relation of setting up between release and the terminal.To the charging of re-broadcast content, consider to realize in the BM-SC side, send when chargeing request the replay times of identification of multimedia content, and the timetable of replaying to Charging Detail Record unit at BM-SC.

Step 540, RNC/BSC judges whether the replay to this content of multimedia is all over after this replay finishes, if last the replay changes step 550 over to, otherwise, forward step 500 to;

Step 550, this multimedia whole contents of deletion and the relevant information of replaying finish from the local memory device of RNC/BSC.

Claims

1. the method that multimedia broadcast/group broadcast service is realized replaying comprises the steps:

Step 2, Radio Access Controller are stored said rebroadcast information, and according to said rebroadcast information, the content of multimedia to needs are replayed receives once from service general grouping service wireless support node, is stored in said Radio Access Controller;

2. the method for claim 1 is characterized in that, said Radio Access Controller is radio network controller or base station controller.

3. the method for claim 1 is characterized in that, said BM-SC obtains said rebroadcast information from the timetable of business guide or rebroadcast information table.

4. the method for claim 1 is characterized in that, for the content of multimedia that the replay demand is arranged, the multi-medium broadcast/group broadcast center is that BM-SC sets up Multimedia session process transmission rebroadcast information separately, and each conversation procedure includes only a kind of replay mode.

5. the method for claim 1 is characterized in that, in the said step 1, rebroadcast information begins request by BM-SC through sending session, and first packet that perhaps after session begins process, sends through the medium face sends to Radio Access Controller.

6. method as claimed in claim 5 is characterized in that, if rebroadcast information begins to ask to send through session, after then this session was set up, the data of sending at this conversation procedure all belonged to same content, and all the elements all need to replay; If being first packet that after session begins process, sends through the medium face, sends rebroadcast information; After then this session is set up; Only discern session and set up first packet that the back receives through the medium face; If this packet comprises rebroadcast information, then all the elements that receive in this conversation procedure are replayed.

7. the method for claim 1 is characterized in that, said rebroadcast information comprises re-broadcast content sign, replay time and replay scope.

8. method as claimed in claim 7 is characterized in that, said replay scope, for broadcasting, then storage replays needs the scope of covering, with the first time range of transmission identical, for multicast, then store multicast address and APN.

9. the method for claim 1 is characterized in that, said step 1 also comprises, and rebroadcast information is informed the user through the business guide mode.

10. method as claimed in claim 9; It is characterized in that; Said rebroadcast information is as the sub-information notification user of the information of each content of multimedia in business guide the inside, or when the issuing service guide, informs the user with many content of multimedia; Promptly appear with many of a content, its broadcast time is different.

11. method as claimed in claim 6 is characterized in that, in the said step 2; Said Radio Access Controller receives resolution data packet header after session is set up, obtain service identification; According to service identification inquiry rebroadcast information; Whether needs are replayed to judge this content according to rebroadcast information, if desired, then this content of multimedia are kept in the said Radio Access Controller.

12. the method for claim 1 is characterized in that, in the said step 3; Radio Access Controller inquiry rebroadcast information; To the content that needs after the fixed time to replay,, search the content of multimedia of local storage according to rebroadcast information; Send session and begin request and notice request, notify the user receiving multimedia broadcast/multicast.

13. the method for claim 1; It is characterized in that; Replay for all multi-medium broadcast/group broadcasts is professional, and relevant charging flow realizes that in the MBMS center side MBMS center side direction Charging Detail Record unit sends when chargeing request; The replay times of identification of multimedia content, and the timetable of replaying.