CN100505876C - Transmission method for multimedia broadcast service - Google Patents
Transmission method for multimedia broadcast service Download PDFInfo
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- CN100505876C CN100505876C CNB2006101120773A CN200610112077A CN100505876C CN 100505876 C CN100505876 C CN 100505876C CN B2006101120773 A CNB2006101120773 A CN B2006101120773A CN 200610112077 A CN200610112077 A CN 200610112077A CN 100505876 C CN100505876 C CN 100505876C
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Abstract
The multimedia broadcast thereof comprises multi broadcasting channels. The method comprises: selecting one or more channels from the multi broadcasting channels and configuring out one or more logical channel groups; numbering the broadcast channel in the logical channel groups; for a certain logical channel group, the multimedia service data is divided into several frames that are bound with the logical channel to form the binding supper-frames. Wherein, according to the amounts of the channel in the logical channel group, each binding supper-frame are divided into the same amounts of binding frames; each binding frame corresponds to one channel and is numbered; at the sending side of multimedia broadcast, each binding frame is sent to its corresponding channel to transmit; at the receiving side of the multimedia broadcast, according to the numbering sequence of received multi binding frames, the multi binding frames are restored into the binding supper-frames. The invention can improve the transmission capacity of digital multimedia stream.
Description
Technical field
The present invention relates to the multimedia broadcasting field, relate in particular to a kind of transmission method for multimedia broadcast service.
Background technology
Present multimedia broadcasting network, be meant digital multimedia broadcasting network, comprise satellite multimedia broadcasting, ground digital television broadcast, digital audio broadcasting, cable tv broadcast based on coaxial cable, data broadcasting based on the coaxial cable broadcast system, multimedia broadcasting networks such as Mobile Multimedia Broadcasting, the bandwidth that this network offers multimedia programming is a fixing bandwidth, for example various digital television broadcasting systems, owing to be subjected to the restriction of original analog television channels bandwidth, the digital delivery ability that can provide for 8 megahertzes and this analog channel as the channel bandwidth of the analogue television standards of China makes that because of the channel modulation technique that adopts is different digital delivery speed under the present technical conditions is no more than per second 40 megabits.
The broadcast channel bandwidth of pattern 1 is 1.536 megahertzes in the digital audio broadcast system of European standard, the multimedia transfer rate that can carry is per second 1.152 megabits, such digital multimedia transmission bandwidth can satisfy the multimedia programming of one or more low code check, but be not enough to satisfy the demand that the user appreciates the high-quality multimedia, the high quality multimedia program transmits needs higher transmission code check, television video program as 1920 * 1080 high definitions transmits the transmission of the high-quality stereo audio program under 192000 hertz of sample rates of per second.Therefore need a kind of technical method that higher digital multimedia transfer capability can be provided than existing multi-media broadcasting system.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of transmission method for multimedia broadcast service, and described multimedia broadcasting has a plurality of broadcast channels, utilizes a plurality of broadcast channels so that higher digital multimedia transfer capability to be provided.
In order to solve the problems of the technologies described above, the invention provides a kind of transmission method for multimedia broadcast service, comprise the steps:
(1) from described a plurality of broadcast channels, chooses more than one passage respectively, configure one or more logical channel groups, and the broadcast channel in the logical channel group is numbered;
(2) corresponding certain logical channel group, with the multimedia service data cutting is several frames, bundle mutually with this logical channel group, form the binding superframe, wherein, according to the number of channels that comprises in this logical channel group, each binding superframe cutting again is the binding frame of respective amount, each bundlees the passage in corresponding this logical channel group of frame, and each binding frame is numbered;
(3) at the multimedia broadcasting transmitting terminal, with described each the binding frame be distributed to the channel transfer corresponding with it, with multimedia service data with the binding superframe be that unit is sent to receiving terminal by the logical channel group with its binding;
(4), a plurality of binding frames of receiving according to number order, are recovered the binding superframe of transmission at the multimedia broadcasting receiving terminal.
Wherein, described step (1) further comprises the logical channel group is numbered, and the numbering of described logical channel group obtains from the traffic identification of multimedia broadcasting number or program number mapping.
Wherein, the numbering of described each the binding frame of step (2) is by the numbering decision of the broadcast channel of correspondence.
Wherein, in the described step (3), transmitting terminal is distributed to corresponding channel transfer with each binding frame according to number order.
Wherein, transmitting terminal further is sent to receiving terminal with the frame length information of binding frame on the length of the numbering of the broadcast channel of the quantity of the broadcast channel of logical channel group number (LCGN), the binding of binding, binding, binding superframe, each broadcast channel.
Wherein, in the described step (2), the frame length of each binding frame according to the delivery time cutting on the corresponding broadcast channel, makes each bundle the delivery time equal in length of frame on respective channel.
A kind of transmission method for multimedia broadcast service of the present invention utilizes a plurality of broadcast channels that higher digital multimedia transfer capability can be provided.
Description of drawings
Fig. 1 is the process blocks schematic diagram according to the described a kind of transmission method for multimedia broadcast service of the embodiment of the invention;
Fig. 2 is the principle schematic according to the described a kind of transmission method for multimedia broadcast service of the embodiment of the invention.
Embodiment
The present invention is described in further detail below in conjunction with accompanying drawing.
With reference to figure 1, be the process blocks schematic diagram of the described a kind of transmission method for multimedia broadcast service of the embodiment of the invention.Described multimedia broadcasting has a plurality of broadcast channels, and detailed process is as follows:
Step 110: from described a plurality of broadcast channels, choose more than one passage respectively, configure one or more logical channel groups, and the broadcast channel in the logical channel group is numbered;
Step 120: corresponding certain logical channel group, with the multimedia service data cutting is several frames, bundle mutually with this logical channel group, form the binding superframe, wherein, according to the number of channels that comprises in this logical channel group, each binding superframe cutting again is the binding frame of respective amount, each bundlees the passage in corresponding this logical channel group of frame, and each binding frame is numbered;
Step 130: at the multimedia broadcasting transmitting terminal, with described each the binding frame be distributed to the channel transfer corresponding with it, with multimedia service data with the binding superframe be that unit is sent to receiving terminal by the logical channel group with its binding;
Step 140:, a plurality of binding frames of receiving according to number order, are recovered the binding superframe of transmission at the multimedia broadcasting receiving terminal.
With reference to figure 2, be the principle schematic of the described a kind of transmission method for multimedia broadcast service of the embodiment of the invention.Adopt the binding of three broadcast channels to transmit multimedia service in the present embodiment, process is as follows:
At first described three broadcast channels are configured to a logical channel group, and three broadcast channels in this logical channel group are numbered, the numbering result is: broadcast channel 1, broadcast channel 2, broadcast channel 3.Then, to should the logical channel group, with the multimedia service data cutting is several frames, bundle mutually with this logical channel group, obtain a binding superframe, owing to include three broadcast channels in the described logical channel group, therefore be three binding frame MU with the described binding superframe cutting that obtains, the corresponding broadcast channel of each binding frame MU, the numbering according to this broadcast channel is numbered it again, and the numbering result is: MU1, MU2, MU3.
Then,, described each binding frame MU is sent to the channel transfer corresponding with it respectively according to number order, being that unit is sent to receiving terminal by the logical channel group with its binding with the binding superframe with multimedia service data at the multimedia broadcasting transmitting terminal.According to number order, be numbered the binding frame of MU1, be first binding frame and on broadcast channel 1, transmit; Be numbered the binding frame of MU2, be second binding frame and on broadcast channel 2, transmit; Be numbered the binding frame of MU3, be the 3rd binding frame and on broadcast channel 3, transmit.
At the multimedia broadcasting receiving terminal, to receive three binding frames according to number order, recover the binding superframe of transmission, process is: the binding frame that is numbered MU1 that will receive is as first binding frame of binding superframe, be numbered second the binding frame of the binding frame of MU2 as the binding superframe, be numbered three the binding frame of the binding frame of MU3, recover the binding superframe of transmission at last as the binding superframe.
In addition, transmitting terminal is also with the frame length of binding frame on the length of the numbering of the broadcast channel of the quantity of the broadcast channel of logical channel group number (LCGN), the binding of binding, binding, binding superframe, each broadcast channel, and the dynamic adding of broadcast channel and the information that dynamically withdraws from of broadcast channel are sent to receiving terminal in the logical channel group of binding.
Wherein, the logical channel group of a described binding is made up of two or more broadcast channels, and the broadcast channel in the logical channel group is numbered, for example Kun Bang logical channel group L is made up of N broadcast channel, broadcast channel be numbered 1,2,3 ...., N.The numbering of described broadcast channel is used for the order that the arrangement and use broadcast channel sends multimedia service.
And for described binding logical channel group number (LCGN), a broadcast system can have one or more binding logical channel group, can obtain from the traffic identification of multimedia broadcasting number or program number mapping binding logical channel group # in multi-media broadcasting system.
Again because the long measure difference, the expression of the length of different broadcast channel binding frames can be different, but the delivery time length of broadcast channel binding frame on this broadcast channel is identical, this is multi-media broadcasting system receiving terminal reorganization for convenience, make the stand-by period of reorganization the shortest, for example the transfer rate of broadcast channel 1 is per second 1000 units, the transfer rate of broadcast channel 2 is per second 2000 units, the binding frame length that also can define broadcast channel 1 is 200 units, and the binding frame length of broadcast channel 2 is 400 units, but the delivery time length of the binding frame of two broadcast channels is identical, is 0.2 second.
A binding superframe is made up of two or more binding frames, the corresponding broadcast channel of binding frame, and the numbering of binding frame is by the decision of the numbering of the broadcast channel in the binding channels group.
Binding channels is as shown in the table with the concrete corresponding relation of binding frame:
| Binding channels | Corresponding binding frame |
| The logical channel group of binding | The binding superframe |
| The broadcast channel of binding | The binding frame |
The binding frame of each broadcast channel can split into the more binding subframe of minor structure, and the binding subframe is by number order unified numbering in the scope of binding superframe of binding frame, and corresponding relation is as follows:
| Binding channels | Corresponding binding frame | Corresponding binding subframe |
| The logical channel group of binding | The binding superframe | |
| The broadcast channel 1 of binding | Binding frame 1 | The binding subframe 1,2,,,, L |
| The broadcast channel 2 of binding | Binding frame 2 | Binding subframe L+1, L+2,,,, M |
| 、、、、、K | ||
| The broadcast channel N of binding | Binding frame N | Binding subframe K+1, K+2,,,,, J |
L, M, N, K, J are integer in the table.
The binding subframe is applicable to the multimedia service with short length structure, such as the MPEG2 transport stream TS of often using in the multimedia service, this TS stream has the structure of 188 byte lengths, the numbering that for example increases by 1 byte can be directly as the binding subframe, the length of this binding subframe is 189 bytes, a plurality of such binding subframes can be formed the binding frame, maximum 256 subframes are formed a binding superframe, if use the numbering of 2 bytes, a binding superframe is 65536 subframes to the maximum, by that analogy.
The present invention proposes a kind of transmission method for multimedia broadcast service, utilize a plurality of broadcast channels or broadcasting channel that the digital multimedia transfer capability higher than existing multi-media broadcasting system can be provided, for example the digital audio broadcast system of European standard adopts method of the present invention that the transfer rate of per second 4 * 1.152 megabits can be provided with 4 broadcast channels, satisfy high-quality audio broadcasting requirement, utilized this method also can in this system, realize the transmission of mobile flow medium broadcasting service.
Claims (6)
1. transmission method for multimedia broadcast service, described multimedia broadcasting has a plurality of broadcast channels, it is characterized in that, comprises the steps:
(1) from described a plurality of broadcast channels, chooses more than one passage respectively, configure one or more logical channel groups, and the broadcast channel in the logical channel group is numbered;
(2) corresponding certain logical channel group, with the multimedia service data cutting is several frames, bundle mutually with this logical channel group, form the binding superframe, wherein, according to the number of channels that comprises in this logical channel group, each binding superframe cutting again is the binding frame of respective amount, each bundlees the passage in corresponding this logical channel group of frame, and each binding frame is numbered;
(3) at the multimedia broadcasting transmitting terminal, with described each the binding frame be distributed to the channel transfer corresponding with it, with multimedia service data with the binding superframe be that unit is sent to receiving terminal by the logical channel group with its binding;
(4), a plurality of binding frames of receiving according to number order, are recovered the binding superframe of transmission at the multimedia broadcasting receiving terminal.
2. the method for claim 1 is characterized in that, described step (1) further comprises the logical channel group is numbered, and the numbering of described logical channel group obtains from the traffic identification of multimedia broadcasting number or program number mapping.
3. the method for claim 1 is characterized in that, the numbering of described each the binding frame of step (2) is by the numbering decision of the broadcast channel of correspondence.
4. the method for claim 1 is characterized in that, in the described step (3), transmitting terminal is distributed to corresponding channel transfer with each binding frame according to number order.
5. the method for claim 1, it is characterized in that transmitting terminal further is sent to receiving terminal with the frame length information of binding frame on the length of the numbering of the broadcast channel of the quantity of the broadcast channel of logical channel group number (LCGN), the binding of binding, binding, binding superframe, each broadcast channel.
6. the method for claim 1 is characterized in that, in the described step (2), the frame length of each binding frame comes cutting according to the transfer rate on the corresponding broadcast channel, makes each bundle the delivery time equal in length of frame on respective channel.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101120773A CN100505876C (en) | 2006-08-29 | 2006-08-29 | Transmission method for multimedia broadcast service |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101120773A CN100505876C (en) | 2006-08-29 | 2006-08-29 | Transmission method for multimedia broadcast service |
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| CN1960484A CN1960484A (en) | 2007-05-09 |
| CN100505876C true CN100505876C (en) | 2009-06-24 |
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| CNB2006101120773A Expired - Fee Related CN100505876C (en) | 2006-08-29 | 2006-08-29 | Transmission method for multimedia broadcast service |
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Families Citing this family (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101667856B (en) * | 2008-09-04 | 2014-01-01 | 中兴通讯股份有限公司 | Information indicating method of multi-carrier system, base station and terminal |
| CN101778339A (en) * | 2009-01-13 | 2010-07-14 | 中兴通讯股份有限公司 | Configuration method of mutual broadcasting service resources and sending method of configuration information thereof |
| CN104469692B (en) * | 2013-09-25 | 2019-04-16 | 中国科学院上海高等研究院 | The transmission method of real time information in digital multimedia broadcasting system |
| CN106888078B (en) | 2016-12-26 | 2019-03-12 | 中国移动通信有限公司研究院 | The data transmission method and device of forward pass network |
| CN116405103B (en) * | 2023-06-09 | 2023-09-05 | 国家广播电视总局广播电视科学研究院 | Data transmission method and device based on channel bundling and storage medium |
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