CN103108215A - Multiplexer data transmission method and device - Google Patents
Multiplexer data transmission method and device Download PDFInfo
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- CN103108215A CN103108215A CN201310041572XA CN201310041572A CN103108215A CN 103108215 A CN103108215 A CN 103108215A CN 201310041572X A CN201310041572X A CN 201310041572XA CN 201310041572 A CN201310041572 A CN 201310041572A CN 103108215 A CN103108215 A CN 103108215A
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Abstract
The invention relates to a multiplexer data transmission method and a device. The method includes the following steps: step1, a multiplex stream is formed after data combination is carried out on multiplex frames in a multiplexer; step 2: the multiplex stream is transmitted to a receiving end through an output interface, and is stored in a buffer memory at the same time; step 3: the output interface of the multiplexer is detected; and step 4, according to whether the output interface receives response messages, the multiplex stream in the buffer memory is taken out and transmitted again, or the buffer memory is emptied. According to the multiplexer data transmission method and the device, stability of signal output of a multiplexer system can be improved, transmission efficiency of the multiplex stream can be improved, self-adaptive transmission adjustment can be achieved, communication cost can be reduced, and use ratios of communication resource can be improved.
Description
Technical field
The present invention relates to a kind of multiplexer, particularly a kind of multiplexer data transmission method and device.
Background technology
The CMMB multiplexer is the front end system of Mobile Multimedia Broadcasting, be mainly to complete the business datum of the inputs such as television broadcasting, sound radio, urgent broadcast, electron service instruction, data broadcast, encryption authorization, control information table to be carried out multiplexing, output contains the PMS stream (multiplex stream of packing) of multiplexed frame.So just can be linked into mobile multimedia broadcast system to services such as audio frequency, video, data by a circuit.
In social life now, Mobile Multimedia Broadcasting everywhere as seen, in-car TV, mobile TV, panel TV, MP3 on the Mobile portable handheld terminals such as MP4, can receive broadcast TV program rating and information service whenever and wherever possible.As the necessary equipment of Mobile Multimedia Broadcasting, the CMMB multiplexer does not but obtain very high development, and scientific and technological development, network are day by day universal, and communications cost reduces gradually, provides improved space for the reliability transmission of multiplexer.
According to GY/T220.8---2008(People's Republic of China (PRC) radio, film and television industry standard) standard, what the CMMB multiplexer adopted is the output of ASI interface, present multiplexer manufacturer has all added the output of IP interface, these two kinds of outputs are all to adopt to export without the repetition transmit mechanism of feedback mechanism, avoid the packet loss problem by repeating to send identical bag.
What adopt due to existing multiplexer is all output interface without feedback mechanism, and his inevitable shortcoming is exactly that system is stable not, and the rear system that goes wrong can not oneself's adjustment self-recovery.In the face of the packet loss problem is just avoided by the fixing retransmitted packet that arranges as far as possible, but certainly can not fully really solve the packet loss problem, and owing to not checking that sending success or not retransmitted packet has simply just inevitably caused the waste of the communication resource and the increase of communications cost.
Summary of the invention
It is multiplexer data transmission method and the device that asynchronous bidirectional interface, detection send the state failure retransfer that technical problem to be solved by this invention is to provide a kind of output interface.
The technical scheme that the present invention solves the problems of the technologies described above is as follows: a kind of multiplexer data transmission method, it is characterized in that, and comprise the following steps:
Step 1: the multiplexed frame of multiplexer inside forms multiplex stream after carrying out the data combination;
Step 2: multiplex stream is sent to receiving terminal by output interface, simultaneously multiplex stream is stored in buffer storage;
Step 3: the output interface that detects multiplexer;
Step 4: whether receive response message according to output interface, the multiplex stream of taking out in buffer storage resends or empties buffer storage.
The invention has the beneficial effects as follows: the buffer memory stores multiplex stream is set, and when packet loss, effectively self-recovery resends.
On the basis of technique scheme, the present invention can also do following improvement.
Further, described output interface is asynchronous bidirectional interface.
The beneficial effect that adopts above-mentioned further scheme is to adopt asynchronous bidirectional interface, after sending data flow, can receive the response message of receiving terminal.
Further, described step 4 is further if do not receive response message, to empty buffer storage; If receive response message, take out the multiplex stream that is stored in buffer storage, resend to receiving terminal.
The beneficial effect that adopts above-mentioned further scheme is only when not receiving multiplex stream, just receives response message, has improved data transmission efficiency.
A kind of multiplexer data transmission device comprises the data composite module, memory module, and detection module and repeating transmission empty module;
Described data composite module after the multiplexed frame that is used for multiplexer inside carries out the data combination, forms multiplex stream;
Described memory module is used for the multiplex stream that the data composite module produces is sent to receiving terminal by output interface, simultaneously multiplex stream is stored in buffer storage;
Described detection module is for detection of the output interface of multiplexer;
Described repeating transmission empties module, is used for whether receiving response message according to the output interface that detection module detects, and takes out multiplex stream in buffer storage and resends or empty memory module and be stored in multiplex stream in buffer storage.
Adopt the beneficial effect of above-mentioned further scheme that the buffer memory stores multiplex stream is set, when packet loss, effectively self-recovery resends.
Further, the output interface of described multiplexer is asynchronous bidirectional interface.
The beneficial effect that adopts above-mentioned further scheme is to adopt asynchronous bidirectional interface, after sending data flow, can receive the response message of receiving terminal.
Further, empty module further for not receive response message if retransmit, empty buffer storage, if receive response message, take out the multiplex stream that is stored in buffer storage, resend to receiving terminal.
The beneficial effect that adopts above-mentioned further scheme is only when not receiving multiplex stream, just receives response message, has improved data transmission efficiency.
Description of drawings
Fig. 1 is the inventive method flow chart of steps;
Fig. 2 is apparatus of the present invention structure chart.
In accompanying drawing, the list of parts of each label representative is as follows:
1, data composite module, 2, memory module, 3, detection module, 4, retransmit and empty module.
Embodiment
Below in conjunction with accompanying drawing, principle of the present invention and feature are described, example only is used for explaining the present invention, is not be used to limiting scope of the present invention.
As shown in Figure 1, be the inventive method flow chart of steps; Fig. 2 is apparatus of the present invention structure chart.
A kind of multiplexer data transmission method comprises the following steps:
Step 1: the multiplexed frame of multiplexer inside forms multiplex stream after carrying out the data combination;
Step 2: multiplex stream is sent to receiving terminal by output interface, simultaneously multiplex stream is stored in buffer storage;
Step 3: detect the output interface of multiplexer, described output interface is asynchronous bidirectional interface;
Step 4: whether receive response message according to output interface, the multiplex stream of taking out in buffer storage resends or empties buffer storage.
Described step 4 is further if do not receive response message, to empty buffer storage; If receive response message, take out the multiplex stream that is stored in buffer storage, resend to receiving terminal.
A kind of multiplexer data transmission device comprises data composite module 1, memory module 2, and detection module 3 and repeating transmission empty module 4;
Described data composite module 1 after the multiplexed frame that is used for multiplexer inside carries out the data combination, forms multiplex stream;
Described memory module 2 is used for the multiplex stream that data composite module 1 produces is sent to receiving terminal by output interface, simultaneously multiplex stream is stored in buffer storage;
Described detection module 3 is for detection of the output interface of multiplexer;
Described repeating transmission empties module 4, is used for whether receiving response message according to the output interface that detection module 3 detects, and takes out multiplex stream in buffer storage and resends or empty memory module 2 and be stored in multiplex stream in buffer storage.
If described repeating transmission empties module 4 further for not receive response message, empty buffer storage, if receive response message, take out the multiplex stream that is stored in buffer storage, resend to receiving terminal.
The above is only preferred embodiment of the present invention, and is in order to limit the present invention, within the spirit and principles in the present invention not all, any modification of doing, is equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (6)
1. a multiplexer data transmission method, is characterized in that, comprises the following steps:
Step 1: the multiplexed frame of multiplexer inside forms multiplex stream after carrying out the data combination;
Step 2: multiplex stream is sent to receiving terminal by output interface, simultaneously multiplex stream is stored in buffer storage;
Step 3: the output interface that detects multiplexer;
Step 4: whether receive response message according to output interface, the multiplex stream of taking out in buffer storage resends or empties buffer storage.
2. multiplexer data transmission method according to claim 1, it is characterized in that: described output interface is asynchronous bidirectional interface.
3. multiplexer data transmission method according to claim 1, it is characterized in that: described step 4 is further if do not receive response message, to empty buffer storage; If receive response message, take out the multiplex stream that is stored in buffer storage, resend to receiving terminal.
4. multiplexer data transmission device is characterized in that: comprise data composite module (1), and memory module (2), detection module (3) and repeating transmission empty module (4);
Described data composite module (1) after the multiplexed frame that is used for multiplexer inside carries out the data combination, forms multiplex stream;
Described memory module (2) is used for the multiplex stream that data composite module (1) produces is sent to receiving terminal by output interface, simultaneously multiplex stream is stored in buffer storage;
Described detection module (3) is for detection of the output interface of multiplexer;
Described repeating transmission empties module (4), is used for whether receiving response message according to the output interface that detection module (3) detects, and takes out multiplex stream in buffer storage and resends or empty memory module (2) and be stored in multiplex stream in buffer storage.
5. multiplexer data transmission device according to claim 4, it is characterized in that: the output interface of described multiplexer is asynchronous bidirectional interface.
6. multiplexer data transmission device according to claim 4, it is characterized in that: retransmit and empty module (4) if further for not receiving response message, empty buffer storage, if receive response message, take out the multiplex stream that is stored in buffer storage, resend to receiving terminal.
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| CN201310041572XA CN103108215A (en) | 2013-02-01 | 2013-02-01 | Multiplexer data transmission method and device |
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| CN201310041572XA CN103108215A (en) | 2013-02-01 | 2013-02-01 | Multiplexer data transmission method and device |
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Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101030842A (en) * | 2006-03-03 | 2007-09-05 | 华为技术有限公司 | Method and apparatus for rearranging data in mobile telecommunication system |
| CN101101699A (en) * | 2007-07-30 | 2008-01-09 | 当代天启技术（北京）有限公司 | Method and apparatus for data collection and transmission |
| CN101188786A (en) * | 2006-11-17 | 2008-05-28 | 华为技术有限公司 | Multi-user multiplexing transmission method, system and device for high-speed downlink packet access |
| CN101202610A (en) * | 2007-12-14 | 2008-06-18 | 普天信息技术研究院有限公司 | Retransmission control method in a wireless link controlling body |
| CN101646075A (en) * | 2008-08-06 | 2010-02-10 | 中兴通讯股份有限公司 | Device and method for adjusting code rate of multimedia code stream |
-
2013
- 2013-02-01 CN CN201310041572XA patent/CN103108215A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101030842A (en) * | 2006-03-03 | 2007-09-05 | 华为技术有限公司 | Method and apparatus for rearranging data in mobile telecommunication system |
| CN101188786A (en) * | 2006-11-17 | 2008-05-28 | 华为技术有限公司 | Multi-user multiplexing transmission method, system and device for high-speed downlink packet access |
| CN101101699A (en) * | 2007-07-30 | 2008-01-09 | 当代天启技术（北京）有限公司 | Method and apparatus for data collection and transmission |
| CN101202610A (en) * | 2007-12-14 | 2008-06-18 | 普天信息技术研究院有限公司 | Retransmission control method in a wireless link controlling body |
| CN101646075A (en) * | 2008-08-06 | 2010-02-10 | 中兴通讯股份有限公司 | Device and method for adjusting code rate of multimedia code stream |
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Application publication date: 20130515 |
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