CN101998247B - Method for acquiring broadcast multicast control information and terminal - Google Patents
Method for acquiring broadcast multicast control information and terminal Download PDFInfo
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- CN101998247B CN101998247B CN200910090952.6A CN200910090952A CN101998247B CN 101998247 B CN101998247 B CN 101998247B CN 200910090952 A CN200910090952 A CN 200910090952A CN 101998247 B CN101998247 B CN 101998247B
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Abstract
The invention discloses a method for acquiring broadcast multicast control information and a terminal, wherein the method comprises the following steps of: establishing an MBMS (Multimedia Broadcast Multicast Service) session, and increasing a file description in file description information of a broadcast, wherein the file description is in an appointed type of retransmission broadcast control information aiming to the regionality; collecting lost information of a broadcast data packet of each region subjected to file description information broadcast, producing zoning retransmission broadcast control information, and broadcasting aiming to each region; and receiving the retransmission broadcast control information by each region to obtain broadcast control information of an attributive region. The invention can realize the purpose that terminals of different regions respectively obtain regional retransmission broadcast control information by utilizing a broadcasting mode, thereby solving the defects of inflexibility on acquiring the control information and the like in the prior art.
Description
Technical field
The present invention relates to data service retransmission technique in the communications field, particularly, relate to method and the terminal of in a kind of multimedia broadcast-multicast service, obtaining broadcast multicase control information.
Background technology
In 3-G (Generation Three mobile communication system) (TD-CSDMA, WCMDA, CDMA2000), downlink communication business can be divided into two large classes, unicast service (Unicast service) and multimedia broadcast-multicast service (Multimedia Broadcast Multicast Service, be called for short MBMS), unicast service is the business of a data source to the point-to-point of a user terminal to transmit data, and MBMS business is the point-to-multipoint business of a data source to multiple user terminal to transmit data.
For MBMS business, terminal is obtained multicast service control information at present two kinds of modes: one is that interactive mode is obtained, and terminal is initiated to obtain service instruction request to business platform, and platform returns to corresponding business guide information according to request.The second, MBMS business platform utilizes broadcast channel that business guide is broadcast to each terminal.
Realizing in process of the present invention, inventor finds that in prior art, at least there are the following problems:
1. the mode that interactive mode is obtained business guide has reduced network resource utilization, and is not suitable for business platform and there is no the situation of business guide.
2. utilize the broadcast type method of broadcast channel, require terminal must configured in advance to receive well time and the corresponding broadcast channel resource of broadcast data, once configuration is just not easy to amendment, and require the configuration that business platform must be prior with terminal identical.
3. utilize the broadcast type method of broadcast channel, being also not suitable for broadcast has the control information of area differentiation, affects the flexibility of terminal and business platform, is unfavorable for carrying out of MBMS business.
4. for having the broadcast multicase control information of area differentiation and terminal can not perception service platform when to produce the situation of business guide, existing interactive mode and broadcast type method are all inapplicable.
Summary of the invention
The first object of the present invention is to propose one to obtain broadcast multicase control information method, effectively obtains Retransmission control information to realize by the mode of broadcast.
The second object of the present invention is to propose a kind of terminal of obtaining broadcast multicase control information, effectively obtains the Retransmission control information of broadcast with the terminal realizing in zones of different.
For realizing above-mentioned the first object, according to an aspect of the present invention, a kind of method of obtaining broadcast multicase control information is provided, comprise: A, describe increasing by a file in the file description information of broadcast after MBMS session establishment, file is described specified type for for zonal re-transmission broadcast control information; B, after file description information broadcast, collect the broadcast data packet drop-out in each region, generate subregional re-transmission broadcast control information, and broadcast for each region; C, each region receive described repeated broadcast control information, obtain the business control information of its attributed region.
Preferably, retransmitting broadcast control information can comprise: the Cell_ID of traffic ID, zones of different and corresponding re-transmission broadcast area session time started and end time.
Preferably, can in the File Delivery Table FDT file of broadcast, increase the description of a re-transmission broadcast control information file.
For realizing above-mentioned the second object, according to another aspect of the present invention, provide a kind of terminal of obtaining multicast service control information, having comprised: MBMS module, for receiving the MBMS packet of broadcast and the various control informations of broadcast, comprise re-transmission broadcast control information; Control module for resolving re-transmission broadcast control information, and starts MBMS module and receives the broadcast data packet retransmitting in the set time in the time being re-transmission broadcast control information for this terminal place attributed region.
The method of obtaining broadcast multicase control information and the terminal of various embodiments of the present invention, owing to having increased, subregion is retransmitted to broadcast control information file, business platform is collected the laggard hand-manipulating of needle of each cell data packet loss information to zonal repeated broadcast, therefore, thereby need to be in terminal configured in advance receive the flexibility that the control information of business guide improves business, and by retransmitting broadcast control information, the each area terminal in network can receive the broadcast multicase control information of region.
Below by drawings and Examples, technical scheme of the present invention is described in further detail.
Brief description of the drawings
Accompanying drawing is used to provide a further understanding of the present invention, and forms a part for specification, for explaining the present invention, is not construed as limiting the invention together with embodiments of the present invention.In the accompanying drawings:
Fig. 1 is embodiment of the method one flow chart that obtains broadcast multicase control information according to the present invention;
Fig. 2 is the embodiment data structure schematic diagram that retransmits broadcast control information in the present invention;
Fig. 3 is the embodiment of the method two signaling process figure that obtain broadcast multicase control information according to the present invention;
Fig. 4 is terminal embodiment mono-structural representation that obtains broadcast multicase control information according to the present invention;
Fig. 5 is terminal embodiment bis-structural representations that obtain broadcast multicase control information according to the present invention.
Embodiment
Below in conjunction with accompanying drawing, the preferred embodiments of the present invention are described, should be appreciated that preferred embodiment described herein, only for description and interpretation the present invention, is not intended to limit the present invention.
Below the concrete application scenarios of various embodiments of the present invention is illustrated: the present invention is divided into several according to the general character of geographic area loss situation by whole microzonations of whole broadcast domain and retransmits broadcast area in the reparation of MBMS file, broadcasts different general character and repair file sheet in different re-transmission broadcast areas.In this Ile repair method, because the file of broadcasting in each re-transmission broadcast area is not identical, therefore must completely independently on physical channel, transmit, otherwise can produce interference, impact receives.Therefore, terminal must be obtained the control information of place re-transmission broadcast area.Under this scene, existing interactive mode obtains control information or broadcast mode obtaining information is all inapplicable, the present invention but can solve under this scene effectively, and the terminal in zones of different is obtained the re-transmission broadcast control information of region effectively by the mode of broadcast.Method and the terminal of the present invention being obtained to broadcast multicase control information effectively below by Fig. 1-Fig. 5 are illustrated.
Fig. 1 is embodiment of the method one flow chart that obtains broadcast multicase control information according to the present invention, and as shown in Figure 1, the present embodiment comprises:
Step S102, business platform increase by a file in the file description information of broadcast to be described, the type of specifying this file is for zonal re-transmission broadcast control information file, as File Delivery Table (the File Delivery Table to broadcast after MBMS session establishment, be called for short FDT) file description of middle increase, the type of this file is appointed as region and is retransmitted broadcast control information;
Step S104, after MBMS session establishment broadcast FDT file, after the terminal in each region receives broadcast data packet, the broadcast data package informatin of loss is sent to business platform, business platform is collected the obliterated data package informatin of the end of regional, generate the re-transmission broadcast control information that step S102 mentions, and broadcast;
Step S106, each region, according to described re-transmission broadcast control information file, obtain respectively the broadcast control information of its attributed region.
In the present embodiment, can, at business platform during to all Cell Broadcast CB FDT files, in FDT file, increase the statement that subregion is retransmitted to broadcast control information.Because business platform is collected the laggard hand-manipulating of needle of each Cell Broadcast CB data-bag lost information to zonal repeated broadcast, therefore, the terminal in each region obtains and retransmits broadcast control information, need to be in terminal configured in advance receive well time and the channel resource of broadcast data, can carry out flexible configuration according to retransmitting broadcast control information, thereby improve the flexibility of business, and all terminals in network can receive the re-transmission broadcast control information of its region.The present embodiment makes the terminal in zones of different effectively obtain the Retransmission control information of region by the mode of broadcast by retransmitting broadcast control information.
Fig. 3 is the embodiment of the method two signaling process figure that obtain broadcasting multicast service control information according to the present invention.As shown in Figure 3, the present embodiment is before original conversation end, and the terminal that each region is broadcasted in the session that utilization has been set up, when, receives broadcast data on what physical channel.The terminal of the present embodiment taking home gateway as a certain region obtained control information as example, specifically comprises:
Step 301, home gateway obtains business guide by business platform, as, business platform increases a file in original FDT to be described, the type of this file is appointed as subregional re-transmission broadcast control information, supposing has 3 files to describe (file 1, file 2 and file 3) in original FDT, after increasing, in FDT, has 4 files to describe, and file 4 is described as retransmitting broadcast control information type;
Step 302, terminal receives broadcast data according to normal flow, as the broadcast data packet of file 1, file 2 and file 3;
Step 303, after FDT file off-the-air, terminal detects the integrality of broadcast data APMB package;
Step 304, terminal detects broadcast data packet loss, sends request and repairs message report loss situation to business platform.In request reparation message, carry the location information of cell (Cell_ID) of front yard gateway and the unique identification unified resource of loss or wrong file sheet mark (Universal Resource Identifier, be called for short URI), source piece number (Source BlockNumber, be called for short SBN) and coded identification mark (Encoding Symbol ID is called for short ESI) tlv triple;
Step 305, wrong file sheet tlv triple and location information of cell that the file reparation request that business platform sends according to terminal provides are added up, some adjacent cells that common error (as lost same broadcast data packet) will occur retransmit broadcast area as one, and the number of patent application that statistic processes can have been submitted to referring to applicant is: 200910079314.4 application documents;
Step 306, each re-transmission broadcast area is distributed a unique ServiceID by business platform, and business platform generates a new file, i.e. file 4, Fig. 2 is the embodiment data structure schematic diagram that retransmits broadcast control information file in the present invention;
As shown in Figure 2, retransmit broadcast control information file and can comprise following element: service identification (ServiceID), cell ID (Cell_ID) and corresponding re-transmission broadcast area session time started and end time.ServiceID can corresponding one or more Cell_ID, a corresponding Start_Time and End_Time;
Step 307, business platform are broadcasted newly-generated re-transmission broadcast control information file in original session, because the session of previously setting up does not finish, each terminal is also in session connection, and therefore the terminal in each region can receive above-mentioned re-transmission broadcast control information;
After step 308, terminal receive the file that retransmits broadcast control information, the ServiceID being answered in contrast according to the Cell_ID of community, own place and StartTime and EndTime, and disconnect this session;
Step 309, terminal will be correlated with retransmit broadcast control information tell MBMS module with the set time (as the time started) start receive broadcast data packet;
Step 310, business platform are repaired the packet of file in the StartTime region of going on the air, and terminal receives relevant broadcast data packet in the time started, finishes to receive broadcast data packet at EndTime.
The each embodiment of said method is while there is broadcast data packet loss situation for some region, recovers to network side request, and therefore, follow-up basis receives re-transmission broadcast control information, again receives the packet of loss in new channel and time.It will be understood by a person skilled in the art that, if there is not loss situation in the broadcast data packet in a region, in the present embodiment step 304, the terminal in certain region detects that broadcast data packet is complete, do not have loss situation, this terminal can directly finish the MBMS session of having set up, and does not receive the 4th part of file, retransmit broadcast control information, also need not again receive the broadcast data packet of re-transmission.
Retransmit broadcast control information file by after the alternative document off-the-air of describing in FDT, business platform is collected and is obtained through statistical analysis on the basis of each cell data packet loss, the number of patent application that specifically can submit to before this case applying date referring to applicant is: in 200910079314.4 application documents, the triplet information of repairing in message for request also has associated description.
The session of setting up when the present embodiment utilizes business platform to all Cell Broadcast CB files, broadcast retransmits broadcast control information.And network side business platform can be added up the file reparation request in each region, using some adjacent cells that general character mistake occurs as a re-transmission broadcast area, retransmit broadcast control information.
In prior art, in the time utilizing the broadcast of MBMS channel files, because the file of broadcasting in whole network is identical, therefore all terminals are all to receive packet on physical channel corresponding to identical ServiceID.The present invention adopts subregion to broadcast the file that will retransmit, and therefore, the terminal in each re-transmission broadcast area need to be obtained new ServiceID according to retransmitting broadcast control information, then could in new physical channel, receive packet.
The application compares with the method that interactive mode is obtained control information, and technological merit has following several respects: 1, adopt the mode of broadcast can save wireless bandwidth resource, particularly under the very large situation of number of users; 2, in the application, control information is initiatively broadcast of business platform, also there is no required business guide and cause this time request by failure scenarios while therefore having avoided terminal to initiate request on business platform.
The application compares with the method that common broadcast formula is obtained control information, and technological merit has again following several respects: 1, the application need to be in terminal configured in advance receive the control information of business guide, the flexibility that can improve like this business; 2, the application is by broadcast Retransmission control message file, and all terminals in network can receive the broadcast control information of region.
Fig. 4 is terminal embodiment mono-structural representation that obtains broadcast multicase control information according to the present invention.As shown in Figure 4, comprising:
MBMS module 2, for receiving MBMS business data packet and the various control information of broadcast, comprises the re-transmission broadcast control information for region;
Control module 8 can comprise: detection module 86, for detection of the validity of the Service control packet of described broadcast, as whether complete, whether correct, if packet is the complete loss situation that do not exist, also correct, just confirm as effectively, otherwise need to ask to recover;
Sending module 6, sends request the reparation message of re-transmission when to lost data packets, and request is repaired message and can be comprised: mark URI, SBN and the ESI tlv triple of location information of cell, loss or the error traffic control packet of terminal;
Control module 8, for described re-transmission broadcast control information is resolved, obtains the control information retransmitting, and starts the multicast and broadcast packet that described MBMS module 2 retransmits in set time reception.
The present embodiment can also comprise memory module 5, retransmit the file of broadcast control information file for storing and resolving, as, data format etc., the implication that each field represents, so just can be convenient to control module 8 and resolve, retransmitting broadcast control information file can comprise: the Cell_ID of traffic ID, zones of different and corresponding re-transmission broadcast area session time started and end time.
The improvement that concrete the present embodiment is done for corresponding method embodiment terminal, concrete and network side alternately can be referring to the each embodiment of method.When session that the terminal of the present embodiment can be set up during to all terminals place Cell Broadcast CB file at business platform, receive broadcast and retransmit broadcast control information, and disconnect the session of having set up, utilize the packet information that the re-transmission broadcast area session time started is set up new channel reception re-transmission broadcast to carry out data reparation.
Fig. 5 is terminal embodiment bis-structural representations that obtain broadcast multicase control information according to the present invention.As shown in Figure 5, the MBMS module 8 of the present embodiment can comprise: analyzing sub-module 82, for obtain corresponding traffic ID and corresponding re-transmission broadcast area session time started and end time according to the Cell_ID of community, place; Promoter module 84, starts receiver module when retransmitting the broadcast area session time started and receives and retransmit broadcast control information.
Each embodiment of said method invention can realize in the terminal that possesses structure shown in Fig. 4-Fig. 5 structure chart.
One of ordinary skill in the art will appreciate that: all or part of step that realizes said method embodiment can complete by the relevant hardware of program command, aforesaid program can be stored in a computer read/write memory medium, this program, in the time carrying out, is carried out the step that comprises said method embodiment; And aforesaid storage medium comprises: various media that can be program code stored such as ROM, RAM, home gateway, mobile phone terminal, magnetic disc or CDs.
Finally it should be noted that: the foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, although the present invention is had been described in detail with reference to previous embodiment, for a person skilled in the art, its technical scheme that still can record aforementioned each embodiment is modified, or part technical characterictic is wherein equal to replacement.Within the spirit and principles in the present invention all, any amendment of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (12)
1. a method of obtaining broadcast multicase control information, is characterized in that, comprising:
A, describe increasing by a file in the file description information of broadcast after MBMS session establishment, described file is described specified type for for zonal re-transmission broadcast control information;
B, after the broadcast of described file description information, collect the broadcast data packet drop-out in each region, generate subregional re-transmission broadcast control information, and broadcast for each region, described re-transmission broadcast control information comprises: the Cell_ID of traffic ID, zones of different and corresponding re-transmission broadcast area session time started and end time;
C, described each region receive described re-transmission broadcast control information, obtain the broadcast control information of its attributed region.
2. method according to claim 1, is characterized in that, also comprises:
The traffic ID that its attributed region is corresponding, according to the region Cell_ID in described re-transmission broadcast control information, is resolved in each region;
Each region receives respectively the broadcast data packet retransmitting within described session time started and end time.
3. method according to claim 1, is characterized in that, described steps A comprises:
In the File Delivery Table FDT file of broadcast, increase the description that retransmits broadcast control information file described in.
4. according to the method described in any one in claim 1-3, it is characterized in that, described B comprises:
Message is repaired in the request that comprises broadcast data packet drop-out that receives each area terminal, adds up the broadcast data packet drop-out in each region;
According to the broadcast data packet drop-out in each region, using one or more adjacent cells that same broadcast data packet loss occurs as a re-transmission broadcast area, and generate the re-transmission broadcast control information for described re-transmission broadcast area;
The session of setting up while utilizing to all Cell Broadcast CB packets, retransmits broadcast area to each and broadcasts described re-transmission broadcast control information.
5. method according to claim 4, is characterized in that, described request is repaired message and comprised: the location information of cell of terminal, mark URI, SBN and the ESI tlv triple of loss or error traffic control packet.
6. according to the method described in any one in claim 1-3, it is characterized in that, also comprise:
If the broadcast data packet in a region does not exist loss situation, described MBMS session is directly finished in this region, does not receive described re-transmission broadcast control information.
7. a system of obtaining broadcast multicase control information, is characterized in that, comprising:
File describing module, describes for the file description information of broadcast after MBMS session establishment is increased to a file, and it is for zonal re-transmission broadcast control information that described file is described specified type;
Processing module, for after described file description information broadcast, collect the broadcast data packet drop-out in each region, generate subregional re-transmission broadcast control information, and broadcast for each region, described re-transmission broadcast control information comprises: the Cell_ID of traffic ID, zones of different and corresponding re-transmission broadcast area session time started and end time;
Receiver module, receives described re-transmission broadcast control information for described each region, obtains the broadcast control information of its attributed region.
8. system according to claim 7, is characterized in that,
Described receiver module, also for each region according to the region Cell_ID of described re-transmission broadcast control information, resolve the traffic ID that its attributed region is corresponding; Each region receives respectively the broadcast data packet retransmitting within described session time started and end time.
9. system according to claim 7, is characterized in that, described file describing module is used for:
In the File Delivery Table FDT file of broadcast, increase the description that retransmits broadcast control information file described in.
10. according to the system described in any one in claim 7-9, it is characterized in that, described processing module is used for:
Message is repaired in the request that comprises broadcast data packet drop-out that receives each area terminal, adds up the broadcast data packet drop-out in each region;
According to the broadcast data packet drop-out in each region, using one or more adjacent cells that same broadcast data packet loss occurs as a re-transmission broadcast area, and generate the re-transmission broadcast control information for described re-transmission broadcast area;
The session of setting up while utilizing to all Cell Broadcast CB packets, retransmits broadcast area to each and broadcasts described re-transmission broadcast control information.
11. systems according to claim 10, is characterized in that, described request is repaired message and comprised: the location information of cell of terminal, mark URI, SBN and the ESI tlv triple of loss or error traffic control packet.
12. according to the system described in any one in claim 7-9, it is characterized in that, described receiver module also for:
If the broadcast data packet in a region does not exist loss situation, described MBMS session is directly finished in this region, does not receive described re-transmission broadcast control information.
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| CN200910090952.6A CN101998247B (en) | 2009-08-18 | 2009-08-18 | Method for acquiring broadcast multicast control information and terminal |
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| CN101001162A (en) * | 2006-08-23 | 2007-07-18 | 华为技术有限公司 | Method and customer end of generating file update request message |
| CN101075948A (en) * | 2006-05-15 | 2007-11-21 | 中兴通讯股份有限公司 | Method for realizing realtime fluid-medium programm reliable transmission |
| CN101156330A (en) * | 2005-04-02 | 2008-04-02 | 三星电子株式会社 | File distribution method and apparatus in a mobile broadcast system |
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| CN1377149A (en) * | 2001-03-16 | 2002-10-30 | 松下电器产业株式会社 | Digital broadcasting dispatch system, and apparatus, method, record media and program |
| CN1645787A (en) * | 2005-03-01 | 2005-07-27 | 广东省电信有限公司研究院 | Method for realizing reliable grouped play in distributed vertical flor media system |
| CN101156330A (en) * | 2005-04-02 | 2008-04-02 | 三星电子株式会社 | File distribution method and apparatus in a mobile broadcast system |
| CN101075948A (en) * | 2006-05-15 | 2007-11-21 | 中兴通讯股份有限公司 | Method for realizing realtime fluid-medium programm reliable transmission |
| CN101001162A (en) * | 2006-08-23 | 2007-07-18 | 华为技术有限公司 | Method and customer end of generating file update request message |
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