CN101193344B - Transmission method for multicast broadcast program - Google Patents
Transmission method for multicast broadcast program Download PDFInfo
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- CN101193344B CN101193344B CN2007100007246A CN200710000724A CN101193344B CN 101193344 B CN101193344 B CN 101193344B CN 2007100007246 A CN2007100007246 A CN 2007100007246A CN 200710000724 A CN200710000724 A CN 200710000724A CN 101193344 B CN101193344 B CN 101193344B
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- program stream
- base station
- interface board
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Abstract
The invention discloses a method for transmitting multicast-broadcast programs, which comprises the steps as follows: Step S202, the multicast-broadcast processing module of a base station controller sends a program stream data to the media surface interface board of the base station controller; Step S204, the media surface interface board of the base station controller searches for the addresses of the media surface interface board of a plurality of target base stations from a multicast-broadcast program table according to the program stream identifier after receiving the program stream data; Step S206, the media surface interface board of the base station forwards the program stream data to the media surface interface boards of various base stations; Step S208, the media surface interface board of the base station searches for the address of the IGMP group from a routing table according to the program stream identifier after receiving the program stream data sent in Step S206; Step S210, the program stream data is forwarded with the address of the IGMP group searched for in Step 208 serving as the target address; and Step S212, after a channel card receives the program stream data, a radio frequency (RF) unit of the base station sends the received program stream data to a mobile terminal through an air interface after the program stream data is coded and modulated.
Description
Technical field
The present invention relates to the communications field, and especially, relate to a kind of transmission method for multicast broadcast program.
Background technology
As shown in Figure 1, in the wireless telecommunication system of supporting multicast and broadcast, a multicast broadcast program sends to mobile phone from program source, needs through program source server, multicast and broadcast service node, Radio Access Network (RAN), passes through aerial mouthful of arrival mobile phone again.RAN has comprised base station controller (BSC) and several base stations (BS) again.After multicast and broadcast service node (BSN) sent to the BSC of RAN with one road program, BSC can send to the BS that is had jurisdiction over program, and each BS then can send to program all sub-districts.Through above-mentioned process of transmitting, RAN just can one road multicast broadcast program send to BS each sub-district that can cover.
Usually, the coverage of multicast broadcast program can relate to several BS, and in order to make these BS can receive program stream, former way is the multicast and broadcast processing module by BSC, with BS medium face interface board 22 is that destination address sends program stream, and BSC medium face interface board is responsible for the program stream transfer.But the quantity of a BS that BSC has jurisdiction over may reach thousands of, if by former way, can transmit a large amount of redundant program streams simultaneously between multicast and broadcast processing module and the BSC medium face interface board.
The medium face interface board of BS need all be transmitted a program stream to all channel card, because the inner possible configuration of BS has a plurality of channel card, identical program stream will be duplicated many parts by the medium face interface board of BS, and sends to a plurality of channel card simultaneously.Under the situation that a plurality of program streams send simultaneously, the situation that the redundancy of BS inside is duplicated and sent is particularly serious.
From above-mentioned process of transmitting as seen, same multicast broadcast program content can be replicated many times, just can send to each sub-district that RAN covers.In this process, often have duplicating of many redundancies and exist with transfer step, they have wasted the disposal ability of RAN, have reduced the power system capacity of RAN.
A kind of grouped data communication apparatus implementation with multicast and broadcast function is arranged in the prior art, but do not propose to solve the method for redundant transmission.In addition, also has a kind of wireless access network implementation in the prior art with multicast and broadcast function.It has proposed a kind of method that is used to reduce the redundant transmission of a plurality of multicast control modules under radio network controller to a BS.But this method do not solve the inner same program redundant transmission of BSC problem; Do not consider the inner redundant transmission that reduces at BS yet.
In the wireless system of supporting multicast and broadcast, the redundant transmission of BSC and BS inside can consume big energy-handling capability and the transfer resource that accounts for RAN, thereby has reduced the available system capacity of RAN.
Summary of the invention
Main purpose of the present invention is to be reduced among the RAN that supports multicast broadcast service the redundancy of multicast broadcast service stream is duplicated and sent.For this reason, the invention provides a kind of multicast broadcast program transfer mechanism.
To achieve these goals, according to one embodiment of present invention, provide a kind of transmission method for multicast broadcast program.
This method is provided with the multicast broadcast program table at base station controller medium face interface board, and at the medium face interface board of base station routing table is set, and the routing table on the medium face interface board of base station comprises the IGMP group address at program stream sign and program stream place;
First step, the multicast and broadcast processing module of base station controller send a program stream data to base station controller medium face interface board; And second step, base station controller medium face interface board after receiving program stream data, the medium face interface board address of from the multicast broadcast program table, searching a plurality of target BS according to the program stream sign; Third step, base station controller medium face interface board are forwarded to program stream data the medium face interface board of each base station; The 4th step, the medium face interface board of base station receives after the program stream data that sends in third step, searches the IGMP group address of program stream correspondence from routing table according to the program stream sign; The 5th step is transmitted program stream data with the IGMP group address of searching as destination address in the 4th step; And the 6th step, channel card receives after the program stream data, through coded modulation, sends to portable terminal by the radio frequency unit of base station by aerial mouth.
Wherein, the multicast broadcast program table comprises program stream sign and station list, and wherein, station list further comprises base station medium face interface board address information.
Wherein, have only the channel card that needs program receiving just to add the IGMP group of program correspondence.
Wherein, in the 5th step, send a IGMP message at inside of base station.
By technique scheme of the present invention, the redundancy that can reduce the inner multicast broadcast program stream of BSC sends and the upward transmission of the redundancy each channel card from BS medium face interface board to BS.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is a structural representation of supporting the wireless telecommunications Access Network of multicast broadcast service function;
Fig. 2 is the flow chart according to the transmission method for multicast broadcast program of the embodiment of the invention;
Fig. 3 is the schematic diagram that concerns between the each several part according in the system of the transmission method for multicast broadcast program of the embodiment of the invention; And
Fig. 4 is a flow chart of setting up process according to the multicast of the embodiment of the invention.
Embodiment
Embodiments of the invention are described below with reference to accompanying drawings.
As seen from Figure 1, multicast broadcast program stream is sent to the packet data control functional module 11 of BSC by multicast and broadcast service node 15.In BSC inside, one road program stream sends to some multicast and broadcast processing modules 12 via the packet data control functional module.The multicast and broadcast processing module connects the routing iinformation of being registered when setting up according to program stream, and the program stream of playing continuously is forwarded on the medium face interface board 13 of appointment.
Based on system shown in Figure 1, transmission method for multicast broadcast program according to the embodiment of the invention is provided with multicast broadcast program at base station controller medium face interface board, preferably, the content of table is that { wherein the list element among the BS LIST has comprised information such as BS medium face interface board address for program stream ID, BS LIST}, and/or medium face interface board in the base station is provided with routing table, preferably, the content of table is { program stream ID, the IGMP group address at program stream place }.Wherein, the multicast broadcast program table comprises program stream sign and station list, and wherein, station list further comprises base station medium face interface board address information.
And as shown in Figure 2, this method may further comprise the steps: step S202, and the multicast and broadcast processing module of base station controller sends a program stream data to base station controller medium face interface board; Step S204, base station controller medium face interface board identify the medium face interface board address of searching a plurality of target BS from the multicast broadcast program table according to program stream after receiving program stream data; Step S206, base station controller medium face interface board are forwarded to program stream data the medium face interface board of each base station; Step S208, the medium face interface board of base station receives after the program stream data that sends in step S206, searches the IGMP group address of program stream correspondence from routing table according to the program stream sign; Step S210 transmits program stream data with the IGMP group address of searching as destination address in step S208; And step S212, channel card receives after the program stream data, through coded modulation, sends to portable terminal by the radio frequency unit of base station by aerial mouth.
Wherein, the routing table on the medium face interface board of base station comprises the IGMP group address at program stream sign and program stream place, and, have only the channel card that needs program receiving just to add the IGMP group of program correspondence.
And, in step S210, only sent a IGMP message at inside of base station.
As shown in Figure 3, after program stream arrived BS, BS medium face interface board found out the IGMP address of this program stream correspondence from routing table according to program stream ID.As destination address, program stream is forwarded to the industry ethernet 26 of BS, i.e. above-mentioned steps S208 and S210 with this address.The medium face interface board of BS is responsible for transmitting program to each channel card 23.Channel card is carried out coded modulation to program stream, and the radio frequency unit 24 by BS converts program stream to aerial mouthful of signal and sends to mobile phone 25 again, i.e. above-mentioned steps S212.
When multicast broadcast program stream is set up, need write down the list item relevant with program stream ID on the medium face interface board of BSC and BS, channel card then needs to add corresponding IGMP group, illustrates this process below.
As shown in Figure 4, when (1) was set up at multicast broadcast program stream, BSC multicast and broadcast processing module was sent the registration request to BSC medium face interface board, carried the address of program stream ID and all target BS in the registration request; (2) BSC medium face interface board returns register response to BSC multicast and broadcast processing module after building up the multicast broadcast program list item; (3) BSC multicast and broadcast processing module then sends the registration request to BS medium face interface board, wherein carries program stream ID, IGMP group address and channel card information; (4) BS medium face interface board then sends resource allocation request to corresponding channel card; (5) after channel card is received resource allocation request, add corresponding IGMP group, finish the distribution of other resource, and return the resource allocation response to BS medium face interface board; And (6) BS medium face interface board returns the BS register response to BSC multicast and broadcast processing module, the end of indication BS side resource allocation again after receiving the resource allocation response that channel card is beamed back.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.
Claims (5)
1. transmission method for multicast broadcast program, it is characterized in that, at base station controller medium face interface board the multicast broadcast program table is set, and routing table being set at base station medium face interface board, the routing table on the medium face interface board of described base station comprises the IGMP group address at program stream sign and program stream place;
First step, the multicast and broadcast processing module of base station controller send a program stream data to base station controller medium face interface board; And
Second step, described base station controller medium face interface board identify the medium face interface board address of searching a plurality of target BS from described multicast broadcast program table according to program stream after receiving described program stream data;
Third step, described base station controller medium face interface board is forwarded to each base station medium face interface board with described program stream data;
The 4th step, the medium face interface board of base station receives after the described program stream data that sends in described third step, searches the IGMP group address of described program stream correspondence from described routing table according to the program stream sign;
The 5th step is transmitted described program stream data with the described IGMP group address of searching as destination address in described the 4th step.
2. method according to claim 1 is characterized in that, described multicast broadcast program table comprises program stream sign and station list, and wherein, described station list further comprises base station medium face interface board address information.
3. method according to claim 1 is characterized in that, has only the channel card that needs program receiving just to add the IGMP group of described program correspondence.
4. method according to claim 1 is characterized in that, in described the 5th step, sends a IGMP message at described inside of base station.
5. method according to claim 1 is characterized in that, further may further comprise the steps:
The 6th step, channel card receive after the described program stream data, through coded modulation, send to portable terminal by the radio frequency unit of base station by aerial mouth.
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| Application Number | Priority Date | Filing Date | Title |
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| CN2007100007246A CN101193344B (en) | 2007-01-10 | 2007-01-10 | Transmission method for multicast broadcast program |
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| CN2007100007246A CN101193344B (en) | 2007-01-10 | 2007-01-10 | Transmission method for multicast broadcast program |
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| CN101193344A CN101193344A (en) | 2008-06-04 |
| CN101193344B true CN101193344B (en) | 2011-10-26 |
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| CN2007100007246A Expired - Fee Related CN101193344B (en) | 2007-01-10 | 2007-01-10 | Transmission method for multicast broadcast program |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101902489B (en) | 2009-06-01 | 2013-04-17 | 华为技术有限公司 | Message sending method, processing method, client, router and system |
Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6564052B1 (en) * | 1999-03-19 | 2003-05-13 | Fujitsu Limited | Wireless local loop system and method for wireless link control |
| CN1809181A (en) * | 2005-01-21 | 2006-07-26 | 华为技术有限公司 | Base station transmission architecture and method of implementing data transmission based on the base station transmission architecture |
| CN1852608A (en) * | 2005-12-31 | 2006-10-25 | 华为技术有限公司 | System and method for realizing multi-media broadcasting multi-cast business |
| CN1859269A (en) * | 2006-03-13 | 2006-11-08 | 华为技术有限公司 | Method for improving interface broad band availability between base station and base station controller |
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Patent Citations (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6564052B1 (en) * | 1999-03-19 | 2003-05-13 | Fujitsu Limited | Wireless local loop system and method for wireless link control |
| CN1809181A (en) * | 2005-01-21 | 2006-07-26 | 华为技术有限公司 | Base station transmission architecture and method of implementing data transmission based on the base station transmission architecture |
| CN1852608A (en) * | 2005-12-31 | 2006-10-25 | 华为技术有限公司 | System and method for realizing multi-media broadcasting multi-cast business |
| CN1859269A (en) * | 2006-03-13 | 2006-11-08 | 华为技术有限公司 | Method for improving interface broad band availability between base station and base station controller |
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