CN101282448A - Method for transmitting and receiving multimedia broadcast data as well as system and terminal thereof - Google Patents
Method for transmitting and receiving multimedia broadcast data as well as system and terminal thereof Download PDFInfo
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Abstract
The invention discloses a transmission method, a receiving method, a transmission system and a terminal for multimedia broadcast data. The method of the invention is that, the generated electronic programme comprises description information of data file, service indication and transmission indication corresponding to the data file, which is transmitted on the multimedia broadcasting channel; during the multimedia broadcast data transmission process, the data file and the transmission indication corresponding to the data file are loaded on data unit of a multiple subframe data segment which is transmitted on the multimedia broadcasting channel. The invention can generate a data broadcast file list containing relationships between the transmission indication and the data file during the multimedia broadcast data transmission process with out carrying transmission indication in the generated electronic programme, the data broadcast file list is loaded on the multiple subframe together with the multimedia broadcast data, which are transmitted to the terminal. The invention can realize transmitting and receiving multimedia broadcast data in CMMB system.
Description
Technical field
The present invention relates to wireless communication field, relate in particular to transmission method, the method for reseptance of multimedia broadcast data, and the transmission system of multimedia broadcast data and terminal.
Background technology
Mobile Multimedia Broadcasting has become very powerful and exceedingly arrogant development focus at present.Mobile multi-media broadcasting service is meant via satellite and the terrestrial wireless broadcast mode, realizes receiving broadcast TV program rating and information service on mobile portable hand-holding type terminal whenever and wherever possible.
CMMB (China Mobile Multimedia Broadcast, China Mobile multimedia broadcasting) technology is the China Mobile multimedia broadcasting system industry standard of the formal promulgation of China national General Bureau of Radio, Film and TV.The CMMB system utilizes high-power S-band satellite-signal to cover the whole country, utilizes ground supplement translator to mend a covering satellite-signal blind area, utilize mobile radio networks to make up return path with content repeater satellite signal simultaneously frequently together, the satellite large tracts of land is covered as the master, the ground supplement network is to assist seamless covering, the mobile media broadcasting network that One-to-All Broadcast and two-way interactive combine thereby form.
The present protocol stack of CMMB technical system is as shown in table 1.
Table 1
In CMMB, physical layer will be divided into 40 time slots each second, each time slot 25ms.Channel distribution is control logic channel CLCH and service logical channels SLCH.Wherein the control logic channel fixedly takies time slot No. 0, and each service logical channels takies 1 or a plurality of continuous time slot.
The base unit of each Channel Transmission is a multiplexed frame.Multiplexed frame is made up of multiplex frame head, multiplexing payload and filling.Multiplexed frame and multiplex frame head structure are as shown in Figure 1.
Be divided into audio section, video-frequency band and data segment in the multiplexed sub frame of CMMB, wherein, the structure of data segment as shown in Figure 2.
At present, for the CMMB system also not in the mechanism of broadcast channel transmitting data content.
Summary of the invention
One embodiment of the present of invention provide a kind of transmission method of multimedia broadcast data, and to be implemented in transmitting multimedia broadcast data in the CMMB system, this method comprises the steps:
According to the descriptor of data file, and generate electronic program list, and described electronic program list is sent on multimedia broadcast channels with described data file corresponding service sign and transmission sign; With described data file, and the transmission corresponding sign with described data file, be carried on the data cell of multiplexed sub frame data segment, described multiplexed sub frame is corresponding with the service identification of described data file, and described multiplexed sub frame is sent on multimedia broadcast channels.
An alternative embodiment of the invention provides a kind of method of reseptance of multimedia broadcast data, and to be implemented in receiving multimedia broadcast data in the CMMB system, this method comprises the steps:
The data content that terminal is selected according to the user obtains corresponding data file information from electronic program list, and identifies and the transmission sign with described data file corresponding service; Described terminal receives the multiplexed sub frame corresponding with this service identification according to the described service identification that acquires from multimedia broadcast channels; Described terminal obtains the transmission sign from the data cell of described multiplexed sub frame data segment, and judges whether this transmission sign is complementary with the transmission sign that acquires from electronic program list, if coupling then receives described data cell.
An alternative embodiment of the invention provides a kind of transmission system of multimedia broadcast data, and this system comprises: data content generation module, electronic program list generation module and Multiplexing module, wherein
The data content generation module is used to receive the original contents data, and described original contents data are generated data file, and sends instruction to described control information generation module; Receive and described data file corresponding service sign from described control information generation module, for described data file is distributed the transmission sign, and with the descriptor of described data file, and send to described electronic program list generation module with described data file corresponding service sign and transmission sign; Described data file and the transmission sign corresponding with described data file are sent to described Multiplexing module;
The control information generation module is used for the instruction according to described data content generation module transmission, is described data file distribution service sign, and described service identification is sent to described data content generation module;
The electronic program list generation module is used to receive the descriptor of described data file, and with described data file corresponding service sign and transmission sign, and generate electronic program list, send to described Multiplexing module;
Multiplexing module, the described electronic program list that is used for receiving sends on multimedia broadcast channels; With described data file and the transmission sign corresponding with described data file, be carried on the data cell of multiplexed sub frame data segment, described multiplexed sub frame is corresponding with the service identification of described data file, and described multiplexed sub frame is sent on multimedia broadcast channels.
An alternative embodiment of the invention also provides a kind of terminal, and this terminal comprises: receiving element, matching judgment unit and buffer unit, wherein
Receiving element is used for the information that sends on the receiving multimedia broadcast channel, and this receiving element comprises that programme receives subelement and multiplexed sub frame receives subelement;
Described programme receives subelement, be used to receive electronic program list, and the data content of selecting according to the user, from described electronic program list, obtain corresponding data file information and with this data file corresponding service sign and transmission sign, and described service identification is sent to described multiplexed sub frame receive subelement, described transmission sign is sent to described matching judgment unit;
Described multiplexed sub frame receives subelement, is used for receiving corresponding multiplexed sub frame according to the described service identification that receives, and sends decision instruction to described matching judgment unit;
The matching judgment unit, be used for receiving the data cell of the received multiplexed sub frame data segment of subelement from described multiplexed sub frame, obtain the transmission sign of carrying, and judge this transmission sign and receive the transmission sign that subelement receives whether mate from described programme, if coupling then sends to described buffer unit with this data cell;
Buffer unit is used to receive the data cell that described matching judgment unit sends, the row cache of going forward side by side.
The above embodiment of the present invention, because when generating electronic program list, transmission sign that will be corresponding with data file is included in the electronic program list, thereby make terminal obtain the transmission sign corresponding, and reception and the marking matched data cell of this transmission from electronic program list with selecting the data downloaded file.In addition, in the foregoing description, adopt the transmission means that data file is carried on the data cell of multiplexed sub frame data segment, realized in multimedia broadcast channels, transmitting data.
An alternative embodiment of the invention provides a kind of transmission method of multimedia broadcast data, and to be implemented in transmitting multimedia broadcast data in the CMMB system, this method comprises the steps:
According to the descriptor of data file, and generate electronic program list, and described programme is sent on multimedia broadcast channels with described data file corresponding service sign; The tabulation of generation data casting file comprises the corresponding relation that data file and transmission identify in this tabulation; Described data casting file tabulation is carried on multiplexed sub frame, and with described data file and the transmission sign corresponding with described data file, be carried on the data cell of described multiplexed sub frame data segment, described multiplexed sub frame is corresponding with the service identification of described data file; Described multiplexed sub frame is sent on multimedia broadcast channels.
An alternative embodiment of the invention provides a kind of transmission system of multimedia broadcast data, and this system comprises: data content generation module, electronic program list generation module and Multiplexing module, wherein
The data content generation module is used to receive the original contents data, and described original contents data are generated data file, and sends instruction to described control information generation module; Receive and described data file corresponding service sign from described control information generation module, and with the descriptor of described data file, and send to described electronic program list generation module with described data file corresponding service sign, described data file is sent to described Multiplexing module;
The control information generation module is used for the instruction according to described data content generation module transmission, is described data file distribution service sign, and described service identification is sent to described data content generation module;
The electronic program list generation module is used to receive the descriptor of described data file, and with described data file corresponding service sign, and generate electronic program list, send to described Multiplexing module;
Multiplexing module, the described electronic program list that is used for receiving sends on multimedia broadcast channels; For described data file is distributed the transmission sign; The tabulation of generation data casting file comprises the corresponding relation that data file and transmission identify in this tabulation; Described data casting file tabulation is carried on multiplexed sub frame, and with described data file and the transmission sign corresponding with described data file, be carried on the data cell of described multiplexed sub frame data segment, described multiplexed sub frame is corresponding with the service identification of described data file; Described multiplexed sub frame is sent on multimedia broadcast channels.
An alternative embodiment of the invention provides a kind of method of reseptance of multimedia broadcast data, and to be implemented in receiving multimedia broadcast data in the CMMB system, this method comprises the steps:
The data content that terminal is selected according to the user obtains corresponding data file information from electronic program list, and identifies with described data file corresponding service; Described terminal receives the multiplexed sub frame corresponding with this service identification according to the described service identification that acquires from multimedia broadcast channels; Described terminal obtains this multiplexed sub frame data carried by data broadcast files tabulation from described multiplexed sub frame, from this tabulation, obtain the transmission sign corresponding, and receive and identify the data cell that is complementary with described transmission in the described multiplexed sub frame data segment with user-selected data content.
An alternative embodiment of the invention also provides a kind of terminal, and this terminal comprises: receiving element, matching judgment unit and buffer unit, wherein
Receiving element is used for the information that sends on the receiving multimedia broadcast channel, and this receiving element comprises that programme receives subelement and multiplexed sub frame receives subelement;
Described programme receives subelement, be used to receive electronic program list, and the data content of selecting according to the user, from described electronic program list, obtain corresponding data file information and with this data file corresponding service sign, and described service identification sent to described multiplexed sub frame receive subelement;
Described multiplexed sub frame receives subelement, is used for receiving corresponding multiplexed sub frame according to the described service identification that receives, and sends decision instruction to described matching judgment unit;
The matching judgment unit is used for receiving the received multiplexed sub frame of subelement from described multiplexed sub frame and obtains the data casting file tabulation, and obtains the transmission sign corresponding with user-selected data content from this tabulation; From the data cell of described multiplexed sub frame data segment, obtain the transmission sign of carrying, and judge whether this transmission sign and the transmission sign that gets access to mate from described tabulation, if coupling then sends to described buffer unit with this data cell;
Buffer unit is used to receive the data cell that described matching judgment unit sends, the row cache of going forward side by side.
The above embodiment of the present invention, comprise data file and the data casting file tabulation of transmitting the sign corresponding relation owing to generate, and in the data cell with data file carrying and multiplexed sub frame data segment of will tabulating, thereby when making terminal receive multiplexed sub frame, can obtain the transmission sign of selected data downloaded file according to the data casting file tabulation that acquires, and reception and the marking matched data cell of this transmission.In addition, in the foregoing description, adopt the transmission means that data file is carried on the data cell of multiplexed sub frame data segment, realized in multimedia broadcast channels, transmitting data.
Description of drawings
Fig. 1 is the schematic diagram of the multiplexed frame structure among the CMMB in the prior art;
Fig. 2 is the schematic diagram of the multiplexed frame structured data section among the CMMB in the prior art;
Fig. 3 is the CMMB operation layer system configuration schematic diagram in the embodiment of the invention one;
Fig. 4 is the structural representation of data content generation module in the CMMB operation layer system of the embodiment of the invention one;
Fig. 5 is the structural representation of Multiplexing module in the CMMB operation layer system of the embodiment of the invention one;
Fig. 6 is based on the schematic flow sheet of the transfer of data of CMMB operation layer system configuration in the embodiment of the invention one;
Fig. 7 is the schematic flow sheet that terminal receives data in the embodiment of the invention one from multimedia broadcast channels;
Fig. 8 is the structural representation of the terminal in the embodiment of the invention one;
Fig. 9 is the structural representation of the Multiplexing module in the CMMB operation layer system of the embodiment of the invention two;
Figure 10 is based on the schematic flow sheet of the transfer of data of CMMB operation layer system configuration in the embodiment of the invention two;
Figure 11 is the schematic flow sheet that terminal receives data in the embodiment of the invention two from multimedia broadcast channels;
Figure 12 is the structural representation of the terminal in the embodiment of the invention two.
Embodiment
Below in conjunction with accompanying drawing the embodiment of the invention is described in detail.
Embodiment one
Present embodiment has been described method and the system thereof of transmitting data in the CMMB system by mobile multimedia broadcasting channel.In the present embodiment, the process by mobile multimedia broadcasting channel transmission data in the CMMB system comprises:
Network side generates electronic program list and sends:
Network side is according to description information of files to be transmitted (as information such as title, file type, file sizes), file corresponding service to be transmitted sign, and be the information such as transmission sign of file allocation to be transmitted, generate the content relevant in the electronic program list, and the electronic program list of generation is multiplexed on the broadcast channel sends with data broadcasting;
Network side generates content-data and sends:
Network side obtains the initial data of data broadcast content, generate data file waiting for transmission, for data file waiting for transmission is distributed the transmission sign, data file waiting for transmission is carried out subpackage, packet is inserted the data cell of the data segment of the multiplexed sub frame corresponding with service identification, and transmission that will be corresponding with this data file sign inserts the data cell head, and multiplexed sub frame is sent on multimedia broadcast channels;
Terminal received content data:
Terminal is the chosen content data from electronic program list, from electronic program list, obtain and selected content-data corresponding service sign and transmission sign, receive the multiplexed sub frame corresponding from multimedia broadcast channels with this service identification, read the transmission sign of the data cell head of data segment in this multiplexed sub frame, if this transmission sign is complementary from the transmission sign that electronic program list acquires with terminal, then receive this data cell, and be that data file offers the user the data unit recovery that receives.
Above-mentioned data transmission procedure can be realized by the operation layer system of CMMB system.
Referring to Fig. 3, be the CMMB operation layer system configuration schematic diagram in the embodiment of the invention one, CMMB operation layer system comprises data content generation module, electronic program list generation module, control information generation module and Multiplexing module.
The data content generation module is used to generate the content of data broadcasting.The data content generation module can comprise function sub-modules as shown in Figure 4:
Receive submodule: be used for from data content source reception initial data, and initial data is carried out data type identification, the data type according to this initial data adopts corresponding coding manner to encode then, forms data file waiting for transmission; After the reception submodule receives initial data, send submodule to professional application submodule, content-data processing sub and electronic program list information respectively and send instruction;
Professional application submodule: be used for according to receiving the instruction that submodule sends, to the service channel of control information generation module application data content; Service identification that the receiving control information generation module returns and service channel information, and be that data file waiting for transmission is distributed the transmission sign;
The content-data processing sub is used for according to receiving the instruction that submodule sends data file waiting for transmission being carried out subpackage, and with packet, and sends to Multiplexing module with this data file corresponding service sign and transmission sign;
Electronic program list information sends submodule: be used for according to receiving the instruction that submodule sends, obtain the transmission sign and the service identification of file to be transmitted from professional application submodule, and transmission sign, the service identification that will acquire, and the descriptor of data file (as information such as theme, file type, sizes) sends to the electronic program list generation module.
The electronic program list generation module is used for descriptor, service identification and transmission sign according to the data file that receives from the data content generation module, produces electronic program list.
The control information generation module, be used for request according to the application service channel of data content generation module transmission, to Multiplexing module application traffic channel resource, and the assignment information that feeds back according to Multiplexing module, generate various control information tables and with the data content corresponding service sign of application, the control information generation module sends to the content-data generation module with the service identification that generates.
Multiplexing module, the control information of the electronic program list of the content-data that the data content generation module is generated, the generation of electronic program list generation module and the generation of control information generation module respectively, the structure multiplexed frame also sends on multimedia broadcast channels.Multiplexing module can comprise function sub-modules as shown in Figure 5:
Receive submodule: be used to receive the packet that the data content generation module sends, and corresponding service sign and transmission sign;
Data processing submodule: the data cell that is used for the packet that the reception submodule receives is inserted the pairing multiplexed sub frame data segment of service identification, generate data unit header according to information such as transmission signs, guarantee that the data cell of the same data file of transmission has identical Data Identification;
The emission submodule: be used for process data processing submodule data processed encode, interweave, mapping, modulation, framing processing, formation transmits, and sends on multimedia broadcast channels.
Referring to Fig. 6, in the embodiment of the invention one based on the schematic flow sheet of the transfer of data of CMMB operation layer system configuration, concrete steps comprise:
The data content generation module is arrived with content delivery to be sent in step 1, data content source, the data content generation module receives to be discerned after the content that the data content source sends and encodes, adopt corresponding coding manner that initial data is encoded according to the data type that identifies, form data file.
After step 2, data content generation module receive the content of data content source transmission, to the service channel of control information generation module application data content.
Step 3, control information generation module are according to the request of data content generation module application service channel, to Multiplexing module application service channel.
Step 4, Multiplexing module be according to the request of control information generation module application service channel, sends request, the physical channel of request application transport service to the physical layer of radio network.
The physical layer of radio network is reported multiplex layer with assignment information after finishing the distribution of professional physical channel.
Step 5, multiplex layer are given the control information generation module with the service channel feedback information of distributing.
The service channel information that step 6a-6b, control information generation module feed back according to multiplex layer is data broadcast service distribution service sign (the corresponding service channel of each service identification), and the service identification that distributes is sent to the data content generation module.The control information generation module also generates the corresponding control information table, and the control information table is sent to Multiplexing module.
The control information table that the control information generation module generates can comprise following content: the corresponding relation of service identification and service channel, the control informations such as transmission channel at electronic program list place.
After step 7, data content generation module receive service identification, determine that service channel can obtain, for each data file waiting for transmission is distributed the transmission sign.
Step 8, data content generation module are with the descriptor of service identification, data file waiting for transmission (as information such as the title of data file, title, file type, file sizes), and the information such as transmission sign of file to be transmitted send to the electronic program list generation module.
The above-mentioned information that step 9a-9b, electronic program list generation module provide according to the data content generation module, generate the relevant electronic program list information of data broadcast service, and the electronic program list that generates sent to Multiplexing module, Multiplexing module is multiplexed into electronic program list on the multimedia broadcast channels, and finally sends to terminal.
The electronic program list that the electronic program list generation module generates comprises traffic table, contents table, arrangement information table, access list.Traffic table can be divided into professional master meter and professional subtabulation, and contents table can be divided into content master meter and content subtabulation.The record identification of master meter and subtabulation is identical, corresponding one by one." the electronic guide Data Identification " of the joint at place distinguished when master meter and subtabulation passed through transmission.
The layout table is corresponding one by one with traffic table and contents table respectively, the corresponding one or more access lists of traffic table.Every kind of table all comprises record identification, is used for unique this record of determining.Except that the record identification of contents table is 24, the record identification of all the other tables is 16.Traffic table has write down the corresponding relation of service identification and data file, and contents table has write down the recommended information of content, the layout table record corresponding relation of data file with transmission sign, how access list has write down accessed content.The data structure of layout table can be as shown in table 2.
Table 2
| Grammer | Explanation |
| Layout table () | |
| { | |
| Record identification | |
| The business record sign | The unique identification of a data transmission service |
| Content identification quantity | |
| For (i=0; I＜N; I++) | |
| { | |
| The content record sign | The unique identification of one group of file |
| Include file quantity | |
| For (j=0; J＜M; J++) | |
| { | |
| File name | In this group file, the unique identification of each file. |
| The total data unit number of file | |
| For (k=0; K＜L; K++) | |
| { | |
| The transmission sign | This sign is the transmission sign of data file at multiplex layer. |
| } | |
| FileVersion | |
| File size |
| Grammer | Explanation |
| The type of file | |
| The coded system of file | |
| Keep | |
| } | |
| } | |
| Time started | The time started of data transmission service |
| Concluding time | The concluding time of data transmission service |
| Encrypt indication | |
| Live | |
| Replay | |
| Keep | |
| File is repaired URL | The request address of data transmission service is used for terminal to server and initiates request. |
| } |
Step 10, data content generation module send to Multiplexing module after the data file subpackage is encapsulated.The data content generation module can also carry out forward error correction to packet as required and calculate.
Step 11, Multiplexing module install to data envelope in the data cell of data segment of the pairing multiplexed sub frame of service identification, and will transmit sign and be inserted in the data cell as data unit header.
Service identification can corresponding a plurality of data files, a data file might be divided into a plurality of packets, be packaged in a plurality of data cells, but it is all identical that the entrained transmission of the data cell that belongs to same data file identifies, and this transmission sign is exactly the pairing transmission sign of this data file.
The data unit header of multiplexed sub frame data segment is that the transmission sign that provides according to the data content generation module of Multiplexing module, FEC (forward error correction) information etc. generate.Can in data segment, filter the data cell that oneself needs by the information terminal in the data unit header.The data structure of data unit header can be as shown in table 3.
Table 3
| Grammer | Explanation |
| Data unit header () | |
| { | |
| The transmission sign | The transmission sign of data cell, the identical unit of transmission sign belongs to same file. |
| The FEC algorithm information | The FEC algorithm information that transmission is used. |
| Sequence of unit number | The serial number of notebook data unit when recovery file |
| Total unit number | Total data cell quantity that this data file comprises.Can judge in view of the above whether terminal has received all data cells. |
| The quantity of bag | |
| } |
Comprise 1～n packet in the data unit, the data structure in the packet header of these packets can be as shown in table 4.
Table 4
| Grammer | Explanation |
| Data packet head () | |
| { | |
| The head length degree | |
| The bag sign of FEC coding | The bag sign of FEC coding, the recovery when being used for forward error correction |
| Data length | |
| } |
Step 12, Multiplexing module by with service identification corresponding service passage, multiplexed frame is issued to terminal.Multiplexing module also issues corresponding control information by logical control channel simultaneously.
In the above-mentioned flow process, if the service channel of service data transmission is being determined before, then above-mentioned steps 2～7 can be omitted.
In the above-mentioned flow process, step 8 and step 10 do not have strict sequential requirement, that is, the data content generation module sends to the electronic program list generation module with information, carries out two processes of data file subpackage with the data content generation module, do not have strict sequencing.
By above flow process, after network side generates electronic program list and content-data, the user can want the data downloaded content according to the content choice of electronic program list, and, finish file and download according to the data cell in the service identification that in electronic program list, the obtains multiplexed sub frame relevant with the reception of transmission sign.
Referring to Fig. 7, be the schematic flow sheet of terminal in the embodiment of the invention one from mobile multimedia broadcasting channel reception data, concrete steps comprise:
The transmission channel information of step 101, terminal electron gain programme on the control logic channel of No. 0 time slot, and receive electronic program list from the transmission channel of appointment according to this information.
Terminal program can be by the layout table (data structure of layout table is as shown in table 1) in the electric program guide, knows that data file that the user selects is in the size of time, transmission sign and the some other information such as the file of multiplex layer transmission and type etc.Wherein the size of file, type and coded system are mainly used to allow terminal program carry out the preparation of handling this data file, find relevant application program entry.The service identification that terminal needs is by obtaining in the traffic table related with the layout table.
Because transmission channel is corresponding with service identification, so multiplexed sub frame that receives and the user-selected pairing service identification of data content are complementary.
After step 104, terminal receive multiplexed sub frame, read the data cell in the multiplexed sub frame data segment.
Transmission sign in step 105, the terminal reading of data unit header, and judge whether this transmission sign and the transmission sign that acquires mate, if coupling, then execution in step 106 from electronic program list; Otherwise, return step 104, continue to read other data cells in the multiplexed sub frame data segment.
If the sign of the transmission in step 106 data unit header is complementary with the transmission sign that acquires, then this data cell is put into buffer area from electronic program list.
Whether step 107, terminal judges have intactly received the data cell of all these data content correspondences, if then execution in step 108; Otherwise, return step 104, continue to read other data cells in the multiplexed sub frame data segment.
Whether file of terminal judges by complete reception, can judge by the total data unit number of this document of identifying in FEC (forward error correction) data or the data unit header.
Finish the terminal of above-mentioned flow process, its structure can be as shown in Figure 8.
Referring to Fig. 8, be the structural representation of the terminal in the embodiment of the invention one, this terminal comprises: receiving element, matching judgment unit, integrality judging unit, data buffer storage unit and data recovery unit.
Receiving element is used for from multimedia broadcast channels reception information, and receiving element comprises that control information receives subelement, programme receives subelement and multiplexed sub frame receives subelement.Wherein,
Control information receives the control logic channel receiving control information of subelement from multimedia broadcast channels, and the control information that receives is sent to programme receive subelement, this control information indicates the passage of transmission electronic programme, as service logical channels 1;
Programme receives subelement according to the control information that receives, and receives electronic program list from the service logical channels 1 of transmission electronic programme; And according to user-selected data content, from electronic program list, get access to corresponding data file information, and with this data file corresponding service sign and transmission sign, and service identification sent to multiplexed sub frame receive subelement, will transmit to identify sending to matching unit;
Multiplexed sub frame receives subelement according to the service identification that receives, and receives multiplexed sub frame from corresponding service logic channel 2, sends decision instruction to the matching judgment unit then;
After the matching judgment unit receives decision instruction, read the entrained transmission sign of data cell head of multiplexed sub frame data segment, and judge that the transmission sign read and programme receive transmission that subelement sends and identify and whether mate, if coupling (if the transmission that the data cell head carries sign, identical with the transmission that acquires from the electronic program list sign at least one, then think coupling), then this data cell is sent to buffer unit, the header information of this data cell is sent to the integrality judging unit;
Buffer unit receives the laggard row cache of data cell that the matching judgment unit sends;
The integrality judging unit judges whether intactly to have received user-selected data file according to this information, if then data in buffer unit in the buffer unit is reverted to data file after receiving the header information of the data cell that matching unit sends; Otherwise, sending instruction to the matching judgment unit, indication matching judgment unit continues that other data cells are carried out matching judgment to be handled.
Embodiment two
Present embodiment has been described method and the system thereof of transmitting data in the CMMB system by mobile multimedia broadcasting channel.In the present embodiment, the process by mobile multimedia broadcasting channel transmission data in the CMMB system comprises:
Network side generates electronic program list and sends:
Network side is according to description information of files to be transmitted (as information such as title, file type, file sizes), and the information such as service identification of file to be transmitted, generate the content relevant in the electronic program list, and the electronic program list of generation is multiplexed on the broadcast channel sends with data broadcasting;
Network side generates content-data and sends:
Network side obtains the initial data of data broadcast content, generate data file waiting for transmission, data file waiting for transmission is carried out subpackage, packet is inserted the data cell of the multiplexed sub frame data segment corresponding with service identification, for data file waiting for transmission is distributed the transmission sign, transmission sign that will be corresponding with this data file is inserted the data cell head; The tabulation of spanned file data casting file, the transmission that goes out each data file correspondence in identified in list identifies, and this tabulation is carried on described multiplexed sub frame, and multiplexed sub frame is sent on multimedia broadcast channels;
Terminal received content data:
Terminal is the chosen content data from electronic program list, obtain from electronic program list and selected content-data corresponding service sign, receive the multiplexed sub frame corresponding with this service identification from multimedia broadcast channels; Read data carried by data broadcast files tabulation in the multiplexed sub frame data segment data cell, from this tabulation, obtain the transmission sign corresponding with user-selected content-data; Read the transmission sign of the data cell head of data segment in this multiplexed sub frame, if this transmission sign is complementary with the transmission sign that terminal acquires from the data casting file tabulation, then receiving this data cell, is that data file offers the user with the data unit recovery that receives.
Above-mentioned data transmission procedure can be realized by the operation layer system of CMMB system.
CMMB operation layer system configuration schematic diagram in the embodiment of the invention two can be as shown in Figure 3, and CMMB operation layer system comprises data content generation module, electronic program list generation module, control information generation module and Multiplexing module.
The data content generation module is used to generate the content of data broadcasting.The data content generation module can comprise function sub-modules as shown in Figure 4:
Receive submodule: be used for from data content source reception initial data, and initial data is carried out data type identification, the data type according to this initial data adopts corresponding coding manner to encode then, forms data file waiting for transmission; After the reception submodule receives initial data, send submodule to professional application submodule, content-data processing sub and electronic program list information respectively and send instruction;
Professional application submodule: be used for according to receiving the instruction that submodule sends, to the service channel of control information generation module application data content; Service identification that the receiving control information generation module returns and service channel information;
The content-data processing sub is used for according to receiving the instruction that submodule sends data file waiting for transmission being carried out subpackage, and with packet, and sends to Multiplexing module with this data file corresponding service sign;
Electronic program list information sends submodule: be used for according to receiving the instruction that submodule sends, with the descriptor (as information such as theme, file type, sizes) of data file, and information such as service identification sends to the electronic program list generation module.
The electronic program list generation module is used for descriptor and service identification according to the data file that receives from the data content generation module, produces electronic program list.
The control information generation module, be used for request according to the application service channel of data content generation module transmission, to Multiplexing module application traffic channel resource, and the assignment information that feeds back according to Multiplexing module, generate various control information tables and service identification, the control information generation module sends to the content-data generation module with the service identification that generates.
Multiplexing module, the control information of the electronic programming unit of the content-data that the data content generation module is generated, the generation of electronic programming generation module and the generation of control information generation module respectively, the structure multiplexed frame also sends on multimedia broadcast channels.Multiplexing module can comprise function sub-modules as shown in Figure 9:
Receive submodule: be used to receive the packet that the data content generation module sends, and the corresponding service sign;
Transmission sign distribution sub module is used to data file to distribute the transmission sign;
Tabulation generates submodule, is used for the transmission sign according to the distribution of transmission sign distribution sub module, generates the data casting file tabulation, and identified in list goes out the transmission sign of each data file correspondence;
Data processing submodule: the data cell that is used for the packet that the reception submodule receives is inserted the pairing multiplexed sub frame data segment of service identification, generate data unit header according to information such as transmission signs, guarantee that the data cell of the same data file of transmission has identical Data Identification; Data cell in the multiplexed sub frame data segment is inserted in data casting file tabulation, and what indicate this units of data carry at the head of this data cell is the data casting file tabulation; Then the data of handling well are sent to the emission submodule;
The emission submodule: be used for process data processing submodule data processed encode, interweave, mapping, modulation, framing processing, formation transmits, and sends on multimedia broadcast channels.
Referring to Figure 10, in the embodiment of the invention two based on the schematic flow sheet of the transfer of data of CMMB operation layer system configuration, concrete steps comprise:
The data content generation module is arrived with content delivery to be sent in step 1, data content source, the data content generation module receives to be discerned after the content that the data content source sends and encodes, adopt corresponding coding manner that initial data is encoded according to the data type that identifies, form data file.
After step 2, data content generation module receive the content of data content source transmission, to the service channel of control information generation module application data content.
Step 3, control information generation module are according to the request of data content generation module application service channel, to Multiplexing module application service channel.
Step 4, Multiplexing module be according to the request of control information generation module application service channel, sends request, the physical channel of request application transport service to the physical layer of radio network.
The physical layer of radio network is reported multiplex layer with assignment information after finishing the distribution of professional physical channel.
Step 5, multiplex layer are given the control information generation module with the service channel feedback information of distributing.
The service channel information that step 6a-6b, control information generation module feed back according to multiplex layer is data broadcast service distribution service sign (the corresponding service channel of each service identification), and the service identification that distributes is sent to the data content generation module.The control information generation module also generates the corresponding control information table, and the control information table is sent to Multiplexing module.
After step 7, data content generation module receive service identification, determine that service channel can obtain.
Step 8, data content generation module send to the electronic program list generation module with the descriptor of service identification, data file waiting for transmission (as information such as the title of data file, title, file type, file sizes).
The above-mentioned information that step 9a-9b, electronic program list generation module provide according to the data content generation module, generate the relevant electronic program list information of data broadcast service, and the electronic program list that generates sent to Multiplexing module, Multiplexing module is multiplexed into electronic program list on the multimedia broadcast channels, and finally sends to terminal.
The electronic program list that the electronic program list generation module generates comprises traffic table, contents table, arrangement information table, access list, and wherein, the data structure of layout table can be as shown in table 5.
Table 5
| Grammer | Explanation |
| Layout table () | |
| { | |
| Record identification | |
| The business record sign | The unique identification of a data transmission service |
| Content identification quantity | |
| For (i=0; I＜N; I++) | |
| { | |
| The content record sign | The unique identification of one group of file |
| Include file quantity | |
| For (j=0; J＜M; J++) | |
| { | |
| File URI | File name, in this group file, the unique identification of each file. |
| File size | |
| The type of file | |
| The coded system of file | |
| Keep | |
| } | |
| } | |
| Time started | The time started of data transmission service |
| Concluding time | The concluding time of data transmission service |
| Encrypt indication | |
| Live | |
| Replay | |
| Keep | |
| File is repaired URL | The request address of data transmission service is used for terminal to server and initiates request. |
| } |
Step 10, data content generation module send to Multiplexing module after the data file subpackage is encapsulated.The data content generation module can also carry out forward error correction to packet as required and calculate.
Step 11, Multiplexing module are that data content file is distributed the transmission sign, the tabulation of generation data casting file, data file URI is provided in this tabulation the corresponding relation with the transmission sign, and this tabulation is carried on the data cell of multiplexed sub frame data segment, and what indicate this units of data carry at the head of this data cell is the data casting file tabulation; Multiplexing module installs to data envelope in the data cell of the pairing multiplexed sub frame data segment of service identification, and will transmit the sign be inserted in the data cell as data unit header.
In the present embodiment, Multiplexing module all generates a data broadcast files tabulation in each data segment, this data broadcasting tabulation only identifies the data file of transmitting in the notebook data section, this data broadcasting tabulation provides the transmission sign in the notebook data section of each data file correspondence, and this data broadcasting tabulation is carried on the data cell in the multiplexed sub frame data segment.The data structure of data broadcasting tabulation can be as shown in table 6.
Table 6
| Grammer | Explanation |
| Data casting file table () | |
| { | |
| Quantity of documents | |
| Keep | |
| For (i=0; I＜N; I++) | |
| { | |
| File URI | The unique identification of file |
| FileVersion | |
| File transfer length | |
| The total data unit number of file | How many joints this document has been divided into altogether. |
| The end of file transfer time | Sign this document is transmitted in and when finishes, and terminal is taken this as the standard. |
| The FEC algorithm information | The bag sign of FEC coding, the recovery when being used for forward error correction |
| For (j=0; J＜M; J++) | |
| { | |
| The transmission sign | The transmission sign of transmission this document in the notebook data section, file transmits in corresponding data cell. |
| } | |
| } | |
| CRC 32 | |
| } |
In the present embodiment, data unit header can be carried special information or sign, and the data structure of data unit header can be as shown in table 7.
Table 7
| Grammer | Explanation |
| Data unit header () |
| Grammer | Explanation |
| { | |
| The transmission sign | The transmission sign of data cell, the identical unit of transmission sign belongs to same file. |
| The quantity of bag | |
| } |
Comprise 1～n packet in the data unit, the data structure in the packet header of these packets can be as shown in table 8.
Table 8
| Grammer | Explanation |
| Data packet head () | |
| { | |
| The head length degree | |
| The bag sign of FEC coding | The bag sign of FEC coding, the recovery when being used for forward error correction |
| Data length | |
| } |
Step 12, Multiplexing module by with service identification corresponding service passage, multiplexed frame is issued to terminal.Multiplexing module also issues corresponding control information by logical control channel simultaneously.
In the above-mentioned flow process, if the service channel of service data transmission is being determined before, then above-mentioned steps 2～7 can be omitted.
In the above-mentioned flow process, step 8 and step 10 do not have strict sequential requirement, that is, the data content generation module sends to the electronic program list generation module with information, carries out two processes of data file subpackage with the data content generation module, do not have strict sequencing.
By above flow process, after network side generates electronic program list and content-data, the user can want the data downloaded content according to the content choice of electronic program list, and according to the service identification that in electronic program list, obtains, and the data broadcasting that receives tabulation, receive the data cell in the relevant multiplexed sub frame, finish file and download.
Referring to Figure 11, be the schematic flow sheet of terminal in the embodiment of the invention two from mobile multimedia broadcasting channel reception data, concrete steps comprise:
The transmission channel information of step 201, terminal electron gain programme on the control logic channel of No. 0 time slot, and receive electronic program list from the transmission channel of appointment according to this information.
Terminal program can be by the layout table (data structure of layout table is as shown in table 4) in the electric program guide, knows that data file that the user selects is in the size of time, transmission sign and the some other information such as the file of multiplex layer transmission and type etc.Wherein the size of file, type and coded system are mainly used to allow terminal program carry out the preparation of handling this data file, find relevant application program entry.The service identification that terminal needs is by obtaining in the traffic table related with the layout table.
Because transmission channel is corresponding with service identification, so multiplexed sub frame that receives and the user-selected pairing service identification of data content are complementary.
Transmission sign in step 207, the terminal reading of data unit header, and judge whether this transmission sign and the transmission sign from the data casting file tabulation mate, if coupling, then execution in step 208; Otherwise, return step 206, continue to read other data cells in the multiplexed sub frame data segment.
If the sign of the transmission in step 208 data unit header is complementary with the transmission sign that acquires, then this data cell is put into buffer area from electronic program list.
Whether step 209, terminal judges have intactly received the data cell of all these data content correspondences, if then execution in step 210; Otherwise, return step 206, continue to read other data cells in the multiplexed sub frame data segment.
Whether file of terminal judges by complete reception, can judge by the total data unit number of this document of identifying in FEC (forward error correction) data or the data unit header.
Finish the terminal of above-mentioned flow process, its structure can be as shown in figure 12.
Referring to Figure 12, be the structural representation of the terminal in the embodiment of the invention two, this terminal comprises: receiving element, matching judgment unit, integrality judging unit, data buffer storage unit and data recovery unit.
Receiving element is used for from multimedia broadcast channels reception information, and receiving element comprises that control information receives subelement, programme receives subelement and multiplexed sub frame receives subelement.Wherein,
Control information receives the control logic channel receiving control information of subelement from multimedia broadcast channels, and the control information that receives is sent to programme receive subelement, this control information indicates the passage of transmission electronic programme, as service logical channels 1;
Programme receives subelement according to the control information that receives, and receives electronic program list from the service logical channels 1 of transmission electronic programme; And, from electronic program list, get access to corresponding data file information according to user-selected data content, and identify with this data file corresponding service, and service identification is sent to multiplexed sub frame reception subelement;
Multiplexed sub frame receives subelement according to the service identification that receives, and receives multiplexed sub frame from corresponding service logic channel 2, sends decision instruction to the matching judgment unit then;
After the matching judgment unit receives decision instruction, read the data cell head information of multiplexed sub frame data segment, by the time read expression carrying be the data cell head information of data casting file tabulation the time, read the data casting file tabulation of this units of data carry, from this tabulation, obtain the corresponding transmission sign of selecting with the user of content-data; Read the entrained transmission sign of head of other data cell then, if the transmission that reads sign is complementary (if the transmission that the data cell head carries identifies with the transmission sign that gets access to from this tabulation, identical with in the transmission that from this tabulation, the acquires sign at least one, then think coupling), then this data cell is sent to buffer unit, the header information of this data cell is sent to the integrality judging unit;
Buffer unit receives the laggard row cache of data cell that the matching judgment unit sends;
The integrality judging unit judges whether intactly to have received user-selected data file according to this information, if then data in buffer unit in the buffer unit is reverted to data file after receiving the header information of the data cell that matching unit sends; Otherwise, sending instruction to the matching judgment unit, indication matching judgment unit continues that other data cells are carried out matching judgment to be handled.
Embodiment three
Present embodiment has been described method and the system thereof of transmitting data in the CMMB system by mobile multimedia broadcasting channel.Present embodiment is similar to embodiment two, and difference is:
In the flow process of the transfer of data of present embodiment, data broadcasting tabulation identifies the corresponding relation that the All Files that transmits in this multiplexed sub frame and its transmission identify, the tabulation of this data broadcasting is packed in one or more data cells in the multiplexed sub frame data segment, when inserting a plurality of data cell, transmit in multiplexed sub frame with the form that wheel is broadcast, as every several seconds transmission primarieses.
In the CMMB operation layer system of present embodiment, the data processing submodule of Multiplexing module is inserted data casting file tabulation in one or more data cells in the data segment of multiplexed sub frame, and what (as the head of data unit) identified this or these units of data carry in this or these data cell is the data casting file tabulation, and this data broadcasting tabulation identifies the corresponding relation that the All Files that transmits in this multiplexed sub frame and its transmission identify; The emission submodule of Multiplexing module can be broadcast this data broadcasting tabulation with wheel form is transmitted in multiplexed sub frame.
Correspondingly, wait for that tabulate up to receiving data casting file, the file name according to indication in the tabulation identifies the corresponding relation receiving data units with transmission again if there is the data casting file tabulation to transmit then need after the terminal access multiplexing subframe in the current time slots.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, if of the present invention these are revised and modification belongs within the scope of claim of the present invention and equivalent technologies thereof, then the present invention also is intended to comprise these changes and modification interior.
Claims (29)
1. the transmission method of a multimedia broadcast data is characterized in that, comprises the steps:
According to the descriptor of data file, and generate electronic program list, and described electronic program list is sent on multimedia broadcast channels with described data file corresponding service sign and transmission sign;
With described data file, and the transmission corresponding sign with described data file, be carried on the data cell of multiplexed sub frame data segment, described multiplexed sub frame is corresponding with the service identification of described data file, and described multiplexed sub frame is sent on multimedia broadcast channels.
2. the method for claim 1 is characterized in that, with described data file and described transmission sign, is carried on the process of the data cell of multiplexed sub frame data segment, comprises step:
Described data file is carried out subpackage to be handled;
The packet of described data file is filled into the data cell of described multiplexed sub frame data segment;
Described transmission sign is filled into the head of described data cell.
3. the method for claim 1 is characterized in that, before the described data file of transmission, also comprises step: the service channel of the described data file of application transmission;
After obtaining transmitting the service channel of described data file, the multiplexed sub frame with the described data file of carrying transmits in the described service channel that application obtains.
4. as claim 1 or 3 described methods, it is characterized in that, after described electronic program list of transmission and described data file, also comprise step:
The data content that terminal is selected according to the user obtains corresponding data file information from electronic program list, and identifies and the transmission sign with described data file corresponding service;
Described terminal receives the multiplexed sub frame corresponding with this service identification according to the described service identification that acquires from multimedia broadcast channels;
Described terminal obtains the transmission sign from the data cell of described multiplexed sub frame data segment, and judges whether this transmission sign is complementary with the transmission sign that acquires from electronic program list, if coupling then receives described data cell.
5. the transmission method of a multimedia broadcast data is characterized in that, comprises the steps:
According to the descriptor of data file, and generate electronic program list, and described programme is sent on multimedia broadcast channels with described data file corresponding service sign;
The tabulation of generation data casting file comprises the corresponding relation that data file and transmission identify in this tabulation;
Described data casting file tabulation is carried on multiplexed sub frame, and with described data file and the transmission sign corresponding with described data file, be carried on the data cell of described multiplexed sub frame data segment, described multiplexed sub frame is corresponding with the service identification of described data file; Described multiplexed sub frame is sent on multimedia broadcast channels.
6. method as claimed in claim 5 is characterized in that, with described data file and described transmission sign, is carried on the process of the data cell of multiplexed sub frame data segment, comprises step:
Described data file is carried out subpackage to be handled;
The packet of described data file is filled into the data cell of described multiplexed sub frame data segment;
Described transmission sign is filled into the head of described data cell.
7. method as claimed in claim 5 is characterized in that, described data casting file is tabulated is carried on the process of described multiplexed sub frame, comprising:
Data cell in the described multiplexed sub frame data segment is inserted in the tabulation of described data casting file, and what identify this units of data carry in described data cell is data casting file tabulation, and described data casting file tabulation comprises the corresponding relation that the transmission of the data file transmitted in the notebook data section and this data file identifies;
Perhaps, data cell in the described multiplexed sub frame data segment is inserted in the tabulation of described data casting file, and what identify this units of data carry in described data cell is data casting file tabulation, and described data casting file tabulation comprises the corresponding relation that the transmission of all data files of transmitting in this multiplexed sub frame and this data file identifies.
8. method as claimed in claim 7, it is characterized in that, to comprise the described data casting file tabulation of corresponding relation of the transmission sign of all data files and this document in the multiplexed sub frame, be carried in a plurality of data cells in the described multiplexed sub frame data segment, in described multiplexed sub frame, transmit described data casting file tabulation in the mode that wheel is broadcast.
9. as claim 7 or 8 described methods, it is characterized in that at the head of the data cell of carrying described data casting file tabulation, what indicate described units of data carry is the data casting file tabulation.
10. method as claimed in claim 5 is characterized in that, before the described data file of transmission, also comprises step: the service channel of the described data file of application transmission;
After obtaining transmitting the service channel of described data file, the multiplexed sub frame with the described data file of carrying transmits in the described service channel that application obtains.
11. as claim 5 or 10 described methods, it is characterized in that, after described electronic program list of transmission and described data file, also comprise step:
The data content that terminal is selected according to the user obtains corresponding data file information from electronic program list, and identifies with described data file corresponding service;
Described terminal receives the multiplexed sub frame corresponding with this service identification according to the described service identification that acquires from multimedia broadcast channels;
Described terminal obtains described data casting file tabulation from described multiplexed sub frame, obtain the transmission sign corresponding with user-selected data content from this tabulation, and receives the data cell that is complementary with described transmission sign in the described multiplexed sub frame data segment.
12. the method for reseptance of a multimedia broadcast data is characterized in that, comprises the steps:
The data content that terminal is selected according to the user obtains corresponding data file information from electronic program list, and identifies and the transmission sign with described data file corresponding service;
Described terminal receives the multiplexed sub frame corresponding with this service identification according to the described service identification that acquires from multimedia broadcast channels;
Described terminal obtains the transmission sign from the data cell of described multiplexed sub frame data segment, and judges whether this transmission sign is complementary with the transmission sign that acquires from electronic program list, if coupling then receives described data cell.
13. method as claimed in claim 12 is characterized in that, described terminal obtains described transmission sign from the head of the data cell of described multiplexed sub frame data segment.
14. method as claimed in claim 12 is characterized in that, after described terminal is received the data cell of described data file correspondence, also comprises step: the described data unit recovery that will receive is a data file, and offers the user.
15. the method for reseptance of a multimedia broadcast data is characterized in that, comprises the steps:
The data content that terminal is selected according to the user obtains corresponding data file information from electronic program list, and identifies with described data file corresponding service;
Described terminal receives the multiplexed sub frame corresponding with this service identification according to the described service identification that acquires from multimedia broadcast channels;
Described terminal obtains this multiplexed sub frame data carried by data broadcast files tabulation from described multiplexed sub frame, from this tabulation, obtain the transmission sign corresponding, and receive and identify the data cell that is complementary with described transmission in the described multiplexed sub frame data segment with user-selected data content.
16. method as claimed in claim 15 is characterized in that, described terminal obtains the process of this multiplexed sub frame data carried by data broadcast files tabulation from described multiplexed sub frame, comprising:
Described terminal reads the head of the data cell in the described multiplexed sub frame data segment, if what the head of described data cell identified this units of data carry is the data casting file tabulation, then described terminal reads described data casting file tabulation from described data cell.
17. method as claimed in claim 16, it is characterized in that, if described terminal does not acquire described data casting file tabulation in the current time slots of described multiplexed sub frame, then described terminal receives described data casting file tabulation at the subsequent timeslot of described multiplexed sub frame, and after receiving described data casting file tabulation, tabulation obtains the pairing transmission sign of user-selected data content according to this data casting file, and receives with this transmission and identify the data cell that is complementary.
18. method as claimed in claim 15 is characterized in that, after described terminal is received the data cell of described data file correspondence, also comprises step: the described data unit recovery that will receive is a data file, and offers the user.
19. the transmission system of a multimedia broadcast data is characterized in that, comprising: data content generation module, electronic program list generation module and Multiplexing module, wherein
The data content generation module is used to receive the original contents data, and described original contents data are generated data file, and sends instruction to described control information generation module; Receive and described data file corresponding service sign from described control information generation module, for described data file is distributed the transmission sign, and with the descriptor of described data file, and send to described electronic program list generation module with described data file corresponding service sign and transmission sign; Described data file and the transmission sign corresponding with described data file are sent to described Multiplexing module;
The control information generation module is used for the instruction according to described data content generation module transmission, is described data file distribution service sign, and described service identification is sent to described data content generation module;
The electronic program list generation module is used to receive the descriptor of described data file, and with described data file corresponding service sign and transmission sign, and generate electronic program list, send to described Multiplexing module;
Multiplexing module, the described electronic program list that is used for receiving sends on multimedia broadcast channels; With described data file and the transmission sign corresponding with described data file, be carried on the data cell of multiplexed sub frame data segment, described multiplexed sub frame is corresponding with the service identification of described data file, and described multiplexed sub frame is sent on multimedia broadcast channels.
20. system as claimed in claim 19 is characterized in that, described data content generation module comprises: receive submodule, professional application submodule, content-data processing sub and electronic program list information and send submodule, wherein
Receive submodule, be used to receive the original contents data, described original contents data are generated data file, and send submodule transmission instruction to professional application submodule, content-data processing sub and electronic program list information respectively;
Professional application submodule is used for according to receiving the instruction that submodule sends, to the service channel of control information generation module application data content; The service identification that the receiving control information generation module returns and with this service identification corresponding service channel information, be that data file waiting for transmission distributes the transmission sign;
The content-data processing sub is used for according to receiving the instruction that submodule sends described data file being carried out subpackage, and with the packet of described data file, and the transmission corresponding with this data file sign sends to Multiplexing module;
Electronic program list information sends submodule, be used for according to receiving the instruction that submodule sends, the transmission that obtains described data file from described professional application submodule identifies, and the transmission that will acquire identifies, identify with described data file corresponding service and the descriptor of described data file sends to the electronic program list generation module.
21., it is characterized in that described Multiplexing module comprises: receive submodule, data processing submodule and emission submodule, wherein as claim 19 or 20 described systems
Receive submodule, be used to receive the data file that described data content generation module sends, and corresponding service sign and transmission sign;
The data processing submodule, the packet that is used for described data file that described reception submodule is received is inserted the data cell of multiplexed sub frame data segment, described transmission is identified the head of inserting described data cell, and described multiplexed sub frame is corresponding with described service identification;
The emission submodule, the multiplexed sub frame that is used for handling through described data processing submodule sends on the service channel of the multimedia broadcast channels corresponding with described service identification.
22. the transmission system of a multimedia broadcast data is characterized in that, comprising: data content generation module, electronic program list generation module and Multiplexing module, wherein
The data content generation module is used to receive the original contents data, and described original contents data are generated data file, and sends instruction to described control information generation module; Receive and described data file corresponding service sign from described control information generation module, and with the descriptor of described data file, and send to described electronic program list generation module with described data file corresponding service sign, described data file is sent to described Multiplexing module;
The control information generation module is used for the instruction according to described data content generation module transmission, is described data file distribution service sign, and described service identification is sent to described data content generation module;
The electronic program list generation module is used to receive the descriptor of described data file, and with described data file corresponding service sign, and generate electronic program list, send to described Multiplexing module;
Multiplexing module, the described electronic program list that is used for receiving sends on multimedia broadcast channels; For described data file is distributed the transmission sign; The tabulation of generation data casting file comprises the corresponding relation that data file and transmission identify in this tabulation; Described data casting file tabulation is carried on multiplexed sub frame, and with described data file and the transmission sign corresponding with described data file, be carried on the data cell of described multiplexed sub frame data segment, described multiplexed sub frame is corresponding with the service identification of described data file; Described multiplexed sub frame is sent on multimedia broadcast channels.
23. the system as claimed in claim 22 is characterized in that, described data content generation module comprises: receive submodule, professional application submodule, content-data processing sub and electronic program list information and send submodule, wherein
Receive submodule, be used to receive the original contents data, described original contents data are generated data file, and send submodule transmission instruction to professional application submodule, content-data processing sub and electronic program list information respectively;
Professional application submodule is used for according to receiving the instruction that submodule sends, to the service channel of control information generation module application data content; The service identification that the receiving control information generation module returns and with this service identification corresponding service channel information;
The content-data processing sub is used for described data file being carried out subpackage, and the packet of described data file being sent to Multiplexing module according to receiving the instruction that submodule sends;
Electronic program list information sends submodule, is used for the instruction according to described reception submodule transmission, sends to the electronic program list generation module with the descriptor of described data file and with described data file corresponding service sign.
24. the system as claimed in claim 22 is characterized in that, described Multiplexing module comprises: receive submodule, transmission sign distribution sub module, tabulation generation submodule, data processing submodule and emission submodule, wherein
Receive submodule, be used to receive the data file that described data content generation module sends, and the corresponding service sign;
Transmission sign distribution sub module is used to described data file to distribute the transmission sign;
Tabulation generates submodule, is used for the transmission sign according to the distribution of described transmission sign distribution sub module, generates the data casting file tabulation, and this tabulation comprises described data file and transmits the corresponding relation of sign;
The data processing submodule, be used for and receive the described data file that submodule receives, and described transmission sign distribution sub module is that distribute and corresponding with described data file transmission identifies the data cell of inserting the multiplexed sub frame data segment, described data file list is inserted multiplexed sub frame, and described multiplexed sub frame is corresponding with described service identification;
The emission submodule, the multiplexed sub frame that is used for handling through described data processing submodule sends on the service channel of the multimedia broadcast channels corresponding with described service identification.
25. system as claimed in claim 24, it is characterized in that, described data processing submodule is inserted data cell in the described multiplexed sub frame data segment with described data casting file tabulation, and what indicate this units of data carry at the head of described data cell is the data casting file tabulation, and described data casting file tabulation comprises the corresponding relation of data file with the transmission sign of the transmission of notebook data section;
Perhaps, described data processing submodule is inserted one or more data cells in the described multiplexed sub frame data segment with described data casting file tabulation, and what indicate this units of data carry at the head of described one or more data cells is the data casting file tabulation, and described data casting file tabulation comprises the corresponding relation of data file with the transmission sign of the transmission of this multiplexed sub frame.
26. a terminal is characterized in that, comprising: receiving element, matching judgment unit and buffer unit, wherein
Receiving element is used for the information that sends on the receiving multimedia broadcast channel, and this receiving element comprises that programme receives subelement and multiplexed sub frame receives subelement;
Described programme receives subelement, be used to receive electronic program list, and the data content of selecting according to the user, from described electronic program list, obtain corresponding data file information and with this data file corresponding service sign and transmission sign, and described service identification is sent to described multiplexed sub frame receive subelement, described transmission sign is sent to described matching judgment unit;
Described multiplexed sub frame receives subelement, is used for receiving corresponding multiplexed sub frame according to the described service identification that receives, and sends decision instruction to described matching judgment unit;
The matching judgment unit, be used for receiving the data cell of the received multiplexed sub frame data segment of subelement from described multiplexed sub frame, obtain the transmission sign of carrying, and judge this transmission sign and receive the transmission sign that subelement receives whether mate from described programme, if coupling then sends to described buffer unit with this data cell;
Buffer unit is used to receive the data cell that described matching judgment unit sends, the row cache of going forward side by side.
27. terminal as claimed in claim 26 is characterized in that, described terminal also comprises:
Data recovery unit is used for described buffer unit data in buffer unit is reverted to data file.
28. a terminal is characterized in that, comprising: receiving element, matching judgment unit and buffer unit, wherein
Receiving element is used for the information that sends on the receiving multimedia broadcast channel, and this receiving element comprises that programme receives subelement and multiplexed sub frame receives subelement;
Described programme receives subelement, be used to receive electronic program list, and the data content of selecting according to the user, from described electronic program list, obtain corresponding data file information and with this data file corresponding service sign, and described service identification sent to described multiplexed sub frame receive subelement;
Described multiplexed sub frame receives subelement, is used for receiving corresponding multiplexed sub frame according to the described service identification that receives, and sends decision instruction to described matching judgment unit;
The matching judgment unit is used for receiving the received multiplexed sub frame of subelement from described multiplexed sub frame and obtains the data casting file tabulation, and obtains the transmission sign corresponding with user-selected data content from this tabulation; From the data cell of described multiplexed sub frame data segment, obtain the transmission sign of carrying, and judge whether this transmission sign and the transmission sign that gets access to mate from described tabulation, if coupling then sends to described buffer unit with this data cell;
Buffer unit is used to receive the data cell that described matching judgment unit sends, the row cache of going forward side by side.
29. terminal as claimed in claim 28 is characterized in that, described terminal also comprises:
Data recovery unit is used for described buffer unit data in buffer unit is reverted to data file.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710091022A CN101282448B (en) | 2007-04-05 | 2007-04-05 | Method for transmitting and receiving multimedia broadcast data as well as system and terminal thereof |
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| Application Number | Priority Date | Filing Date | Title |
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| CN200710091022A CN101282448B (en) | 2007-04-05 | 2007-04-05 | Method for transmitting and receiving multimedia broadcast data as well as system and terminal thereof |
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| CN101282448A true CN101282448A (en) | 2008-10-08 |
| CN101282448B CN101282448B (en) | 2012-08-29 |
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