CN101075894A - Method for repeating multi-medium broadcasting/packet broadcasting service - Google Patents

Method for repeating multi-medium broadcasting/packet broadcasting service Download PDF

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Publication number
CN101075894A
CN101075894A CNA200710122792XA CN200710122792A CN101075894A CN 101075894 A CN101075894 A CN 101075894A CN A200710122792X A CNA200710122792X A CN A200710122792XA CN 200710122792 A CN200710122792 A CN 200710122792A CN 101075894 A CN101075894 A CN 101075894A
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replay
multimedia
content
rebroadcast information
session
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CNA200710122792XA
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CN101075894B (en
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刘美萍
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ZTE Corp
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ZTE Corp
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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) realizes that a data source sends the point-to-multipoint service of data to a plurality of terminals.MBMS can not only realize the classes of messages multicast and the broadcasting of plain text low rate, and can also realize the multicast and the broadcasting of high-speed multimedia business, MBMS is based on WCDMA (Wideband Code Division Multiple Access (WCDMA))/TD-SCDMA (TD SDMA)/GSM (global system for mobile communications) Packet Based Network, by increasing some new functional entitys, for example, broadcast multicast service center BM-SC, to existing packet domain functional entity, service general grouping service wireless GPRS Support Node (SGSN) for example, 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 as shown in Figure 1, wherein MBMS center (BM-SC) is connected with gateway general grouping service wireless (GPRS) support node GGSN by 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 by Gn/Gp (same mobile network the inside, interface between GGSN and SGSN gn interface agreement, GGSN and SGSN are in different mobile network the insides, GGSN and the gp interface agreement of the interface between the SGSN) interface links to each other with service GRPS node SSGN, 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 portable terminal 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 portable terminal by Um (GERAN is by the Um Interface agreement with the UE interface) interface.
The process of user's receiving multicast business is as follows:
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 can providing which business to user's announcement service supplier, 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.As 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, every 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 by 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 to be solved in the present invention provides a kind of when carrying out MBMS Mobile Multimedia Broadcasting 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 described rebroadcast information, according to described 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 described 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 described Radio Access Controller is radio network controller or base station controller.
Further, said method also can have following characteristics, and described BM-SC obtains described 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 described step 1, rebroadcast information begins request by BM-SC by sending session, and perhaps first packet by sending by the medium face after beginning process in session sends to Radio Access Controller.
Further, said method also can have following characteristics, if rebroadcast information begins to ask to send by session, after then this session was set up, the data that send at this conversation procedure all belonged to same content, and all the elements all need to replay; If being first packet that sends by the medium face after session begins process, rebroadcast information sends, after then this session is set up, only discern session and set up first packet that the back receives by 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 described rebroadcast information comprises re-broadcast content sign, replay time and replay scope.
Further, said method also can have following characteristics, described replay scope, for broadcasting, the scope that replay to need covers of storage then, 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 described step 1 also comprises, and rebroadcast information is informed terminal by the business guide mode.
Further, said method also can have following characteristics, described rebroadcast information is as the sub-information notification user of the information the inside of each content of multimedia in the business guide, or when the issuing service guide, inform the user with many content of multimedia, promptly present with many of contents, its broadcast time difference.
Further, said method also can have following characteristics, in the described step 2, described 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 described Radio Access Controller.
Further, said method also can have following characteristics, in the described 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, the replay business of all multi-medium broadcast/group broadcasts, 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 by 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 saving 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 by session;
Fig. 3 is that BM-SC of the present invention carries the rebroadcast information flow chart by 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 by 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 by BM-SC in session, after RNC/BSC sets up this session, first packet of each service identification that receives by the medium face is discerned, whether discern the data that transmit in this conversation procedure needs to 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 by 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 as follows:
Step 1, multi-medium broadcast/group broadcast center are that BM-SC sends rebroadcast information to RNC/BSC;
Wherein, rebroadcast information sends session by BM-SC and begins request, when perhaps being Gi transmission data by 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 by session for convenience, and after described session was set up, the data of transmission all belonged to same content, and all content of multimedia that send by this session all need to replay.
RNC/BSC is for the identification of rebroadcast information for convenience, for the situation that sends rebroadcast information by the medium face, after described session is set up, only discern session and set up first packet that the back receives by the medium face, if this packet comprises rebroadcast information, then all the elements that receive in this conversation procedure are all needed to replay.
Step 2, rebroadcast information is informed terminal by 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, present 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 described rebroadcast information, according to described 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 described 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 described 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, as table 1 is 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 can the replay of content of multimedia be managed, and 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 by 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 judges whether this business needs 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 by the Gi interface to Fig. 3, in conjunction with Fig. 3 this part described in further detail:
Step 200, BM-SC is after session begins request process, set up load plane, 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 judges whether this business needs 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 to send by Gi after session is set up, if, then change step 240 over to, otherwise, change step 230 over to;
Step 230, BM-SC does not carry rebroadcast information, end to the packet that GGSN sends standard.
Step 240, BM-SC sends packet to GGSN, and carries the rebroadcast information to content of multimedia in first packet that sends by Gi after session begins process.
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 receive first packet of each service identification by the medium face after session begins process;
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, the re-broadcast content sign, 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), finish up to replay, change 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 to 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 retransmitting later;
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 described 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 (13)

1, a kind of multimedia broadcast/group broadcast service is realized the method for replay, comprises 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 described rebroadcast information, according to described 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 described 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.
2, the method for claim 1 is characterized in that, described Radio Access Controller is radio network controller or base station controller.
3, the method for claim 1 is characterized in that, described BM-SC obtains described 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, sets up the Multimedia session process separately, and each conversation procedure includes only a kind of replay mode.
5, the method for claim 1, it is characterized in that in the described step 1, rebroadcast information begins request by BM-SC by sending session, perhaps first packet by sending by the medium face after beginning process in session sends to Radio Access Controller.
6, method as claimed in claim 5 is characterized in that, if rebroadcast information begins to ask to send by session, after then this session was set up, the data that send at this conversation procedure all belonged to same content, and all the elements all need to replay; If being first packet that sends by the medium face after session begins process, rebroadcast information sends, after then this session is set up, only discern session and set up first packet that the back receives by the medium face, if this packet comprises rebroadcast information, then all the elements that receive in this conversation procedure are all needed to replay.
7, the method for claim 1 is characterized in that, described rebroadcast information comprises re-broadcast content sign, replay time and replay scope.
8, method as claimed in claim 7 is characterized in that, described replay scope, for broadcasting, the scope that replay to need covers of storage then, 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, described step 1 also comprises, and rebroadcast information is informed terminal by the business guide mode.
10, method as claimed in claim 9, it is characterized in that, described rebroadcast information is as the sub-information notification user of the information the inside of each content of multimedia in the business guide, or when the issuing service guide, inform the user with many content of multimedia, promptly present with many of contents, its broadcast time difference.
11, the method for claim 1, it is characterized in that, in the described step 2, described 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 described Radio Access Controller.
12, the method for claim 1, it is characterized in that, in the described 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 is characterized in that, the replay business of all multi-medium broadcast/group broadcasts, and relevant charging flow need send to charging data function unit/Online Charging System to rebroadcast information in the MBMS center side.
CN200710122792XA 2007-07-09 2007-07-09 Method for repeating multi-medium broadcasting/packet broadcasting service Expired - Fee Related CN101075894B (en)

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