VIDEO DATA TRANSMISSION PROCESSING METHOD, VIDEO DATA SENDING PROCESSING METHOD, APPARATUS, NETWORK SYSTEM

• US 20120192031A1
• Filed: 03/29/2012
• Published: 07/26/2012
• Est. Priority Date: 09/30/2009
• Status: Active Grant

• Current Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Original Assignee: Huawei Technologies Co., Ltd. (Huawei Investment & Holding Co., Ltd.)
• Inventors: Liu, Meng, Hu, Changqi, Guo, Yi, Li, Houqiang, Yang, Mingyuan
• Granted Patent: US 9,215,498 B2
• Time in Patent Office: Days
• US Class Current: 714/752
• CPC Class Codes: H04L 1/007 Unequal error protection for format H04L1/0078; for codes per se H03M13/35
• CPC Class Codes: H04N 19/147 according to rate distortion criteria rate-distortion as a criterion for motion estimation H04N19/567
• CPC Class Codes: H04N 19/166 concerning the amount of transmission errors, e.g. bit error rate [BER]
• CPC Class Codes: H04N 19/40 using video transcoding, i.e. partial or full decoding of a coded input stream followed by re-encoding of the decoded output stream
• CPC Class Codes: H04N 19/46 Embedding additional information in the video signal during the compression process H04N19/517, H04N19/68, H04N19/70 take precedence
• CPC Class Codes: H04N 21/2383 Channel coding or modulation of digital bit-stream, e.g. QPSK modulation arrangements for detecting or preventing errors in the information received by adapting the channel coding H04L1/0009; analogue front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002
• CPC Class Codes: H04N 21/4382 Demodulation or channel decoding, e.g. QPSK demodulation analog front ends or means for connecting modulators, demodulators or transceivers to a transmission line H04L27/0002

Abstract

Embodiments of the present invention provide a video data transmission processing method, a video data sending processing method, an apparatus, and a network system. The data transmission processing method includes: receiving a source stream sent from a source transmission network to a target transmission network; performing, according to respective packet loss rates of the source transmission network and the target transmission network as well as error tolerance aid information corresponding to the source stream, error tolerance coding processing on the source stream to obtain an error tolerance stream; and sending the obtained error tolerance stream to the target transmission network.

Claims

1. A video data transmission processing method, comprising:

receiving a source stream sent from a source transmission network to a target transmission network;

performing, according to respective packet loss rates of the source transmission network and the target transmission network as well as error tolerance aid information corresponding to the source stream, error tolerance coding processing on the source stream to obtain an error tolerance stream; and

sending the obtained error tolerance stream to the target transmission network.

2. The video data transmission processing method according to claim 1, wherein:

the error tolerance aid information comprises description information about error tolerance data sets that respectively correspond to the respective packet loss rates of the source transmission network and the target transmission network, and the error tolerance data sets are configured to identify error tolerance data that needs to be adjusted in the source stream.

3. The video data transmission processing method according to claim 2, wherein:

each error tolerance data set that is indicated by the description information meets the following condition;

an error tolerance data set corresponding to a low packet loss rate is a subset of an error tolerance data set corresponding to a high packet loss rate.

4. The video data transmission processing method according to claim 2, wherein:

the performing, according to the respective packet loss rates of the source transmission network and the target transmission network as well as error tolerance aid information corresponding to the source stream, error tolerance coding processing on the source stream to obtain an error tolerance stream, comprises;

according to the respective packet loss rates of the source transmission network and the target transmission network as well as the error tolerance aid information corresponding to the source stream, adjusting redundant frames adaptively for multiple data frames included in the source stream to obtain the error tolerance stream, wherein the error tolerance data set is a redundant frame set that is configured to identify data frames whose redundant frames need to be generated among multiple data frames in the source stream.

5. The video data transmission processing method according to claim 4, wherein:

the adjusting, according to the respective packet loss rates of the source transmission network and the target transmission network as well as the error tolerance aid information corresponding to the source stream, the redundant frames adaptively for the multiple data frames included in the source stream, comprises;

if a first packet loss rate corresponding to the source transmission network is less than a second packet loss rate corresponding to the target transmission network, adding redundant frames which exist in a second redundant frame set but do not exist in a first redundant frame set into the source stream that carries the redundant frame corresponding to the first packet loss rate according to the first redundant frame set corresponding to the first packet loss rate and the second redundant frame set corresponding to the second packet loss rate that are indicated in the description information;

or

if the first packet loss rate corresponding to the source transmission network is greater than the second packet loss rate corresponding to the target transmission network, discarding redundant frames which exist in the first redundant frame set but do not exist in the second redundant frame set from the source stream that carries the redundant frame corresponding to the first packet loss rate according to the first redundant frame set corresponding to the first packet loss rate and the second redundant frame set corresponding to the second packet loss rate that are indicated in the description information.

6. The video data transmission processing method according to claim 2, wherein:

the performing, according to the respective packet loss rates of the source transmission network and the target transmission network as well as error tolerance aid information corresponding to the source stream, error tolerance coding processing on the source stream to obtain an error tolerance stream, comprises;

according to the respective packet loss rates of the source transmission network and the target transmission network as well as the error tolerance aid information corresponding to the source stream, adjusting forward error correction redundancy for each data source block in the source stream to obtain the error tolerance stream, wherein the error tolerance data set is a forward error correction set, and the forward error correction set comprises forward error correction redundancy that needs to be allocated to each data source block under different packet loss rates.

7. The video data transmission processing method according to claim 6, wherein:

the adjusting, according to the respective packet loss rates of the source transmission network and the target transmission network as well as the error tolerance aid information corresponding to the source stream, the forward error correction redundancy for each data source block in the source stream, comprises;

if a first packet loss rate corresponding to the source transmission network is less than a second packet loss rate corresponding to the target transmission network, adding corresponding forward error correction redundancy on the basis of forward error correction redundancy carried in each data source block in the source stream according to the forward error correction description information;

or

if the first packet loss rate corresponding to the source transmission network is greater than the second packet loss rate corresponding to the target transmission network, discarding corresponding forward error correction redundancy on the basis of forward error correction redundancy carried in each data source block in the source stream according to the forward error correction description information.

8. The video data transmission processing method according to claim 1, wherein the method further comprises:

forwarding the error tolerance aid information together with the error tolerance stream or separately.

9. A video data sending processing method, comprising:

obtaining error tolerance aid information corresponding to a source stream according to packet loss rates corresponding to at least two transmission networks in a data transmission network system before sending the source stream to the data transmission network system, wherein the error tolerance aid information is used by a data forwarding node in the data transmission network system to perform error tolerance coding processing on the received stream to obtain an error tolerance stream for reference; and

sending the error tolerance aid information to the data forwarding node.

10. The video data sending processing method according to claim 9, wherein the sending the error tolerance aid information to the data forwarding node comprises:

after generating the error tolerance stream corresponding to the source stream according to the error tolerance aid information and packet loss rates corresponding to transmission networks between data forwarding nodes, sending the error tolerance stream together with the error tolerance aid information to the data forwarding node.

11. The video data sending processing method according to claim 9, wherein:

the error tolerance aid information comprises description information about error tolerance data sets that respectively correspond to the respective packet loss rates of at least two transmission networks in the data transmission network system, and the error tolerance data sets are configured to identify error tolerance data that needs to be adjusted in the source stream.

12. The video data sending processing method according to claim 11, wherein:

each error tolerance data set that is indicated by the description information meets the following condition;

an error tolerance data set corresponding to a low packet loss rate is a subset of an error tolerance data set corresponding to a high packet loss rate.

13. The video data sending processing method according to claim 11, wherein:

the obtaining the error tolerance aid information corresponding to the source stream according to the packet loss rates corresponding to at least two transmission networks in the data transmission network system comprises;

obtaining, according to the packet loss rates corresponding to the at least two transmission networks in the data transmission network system, the error tolerance aid information for the data forwarding node to adjust the received stream adaptively to obtain an error tolerance stream, wherein the error tolerance data set is a redundant frame set that is configured to identify data frames whose redundant frames need to be generated among multiple data frames in the source stream;

or

obtaining, according to the packet loss rates corresponding to at least two transmission networks in the data transmission network system, the error tolerance aid information for the data forwarding node to adjust forward error correction redundancy for each data source block in the received stream to obtain the error tolerance stream, wherein the error tolerance data set is a forward error correction set, and the forward error correction set comprises forward error correction redundancy that needs to be allocated to each data source block under different packet loss rates.

14. The video data sending processing method according to claim 13, wherein:

the obtaining, according to the packet loss rates corresponding to at least two transmission networks in the data transmission network system, the error tolerance aid information for the data forwarding node to adjust redundant frames adaptively for the received stream to obtain the error tolerance stream, comprises;

calculating source distortion information and channel distortion information corresponding to each data frame in the stream with respect to at least two packet loss rates in a case of generating no redundant frame and in a case of generating redundant frames respectively;

applying a rate-distortion model to judge whether redundant frames of data frames corresponding to the calculated source distortion information and channel distortion information need to be generated under a corresponding packet loss rate condition to obtain a judgment result; and

obtaining description information about redundant frame sets corresponding to the at least two packet loss rates respectively according to the judgment result.

15. A data forwarding node device, comprising:

a first receiving module, configured to receive a source stream sent from a source transmission network to a target transmission network;

a coding processing module, configured to perform error tolerance coding on the source stream according to respective packet loss rates of the source transmission network and the target transmission network as well as error tolerance aid information corresponding to the source stream to obtain an error tolerance stream; and

a first sending module, configured to send the obtained error tolerance stream to the target transmission network.

16. The data forwarding node device according to claim 15, wherein the coding processing module comprises:

a first processing submodule, configured to adjust redundant frames adaptively for multiple data frames included in the source stream according to the respective packet loss rates of the source transmission network and the target transmission network as well as the error tolerance aid information corresponding to the source stream to obtain an error tolerance stream, wherein the error tolerance aid information comprises description information about redundant frame sets corresponding to the respective packet loss rates of the source transmission network and the target transmission network respectively, and the redundant frame sets are configured to identify data frames whose redundant frames need to be generated among multiple data frames in the source stream;

or

a second processing submodule, configured to adjust forward error correction redundancy for each data source block in the source stream according to the respective packet loss rates of the source transmission network and the target transmission network as well as the error tolerance aid information corresponding to the source stream to obtain an error tolerance stream, wherein the error tolerance aid information comprises forward error correction description information about forward error correction sets corresponding to the respective packet loss rates of the source transmission network and the target transmission network respectively, and the forward error correction set comprises forward error correction redundancy that needs to be allocated to each data source block under different packet loss rates respectively.

17. The data forwarding node device according to claim 16, wherein:

each redundant frame set that is indicated by the description information meets the following condition;

a redundant frame set corresponding to a low packet loss rate is a subset of a redundant frame set corresponding to a high packet loss rate;

or

each forward error correction set that is indicated by the forward error correction description information meets the following condition;

a forward error correction set corresponding to a low packet loss rate is a subset of a forward error correction set corresponding to a high packet loss rate.

18. A network device, comprising:

a first obtaining module, configured to obtain error tolerance aid information corresponding to a source stream according to packet loss rates corresponding to at least two transmission networks in a data transmission network system before sending the source stream to the data transmission network system, wherein the error tolerance aid information is used by a data forwarding node in the data transmission network system to perform error tolerance coding processing on the received stream to obtain an error tolerance stream for reference; and

a second sending module, configured to send the error tolerance aid information to the data forwarding node.

19. The network device according to claim 18, wherein the first obtaining module comprises:

a first obtaining submodule, configured to;

obtain, according to the packet loss rates corresponding to at least two transmission networks in the data transmission network system, the error tolerance aid information for the data forwarding node to adjust redundant frames adaptively for a received stream to obtain an error tolerance stream, and the error tolerance aid information comprises description information about redundant frame sets corresponding to the respective packet loss rates of at least two transmission networks in the data transmission network system respectively, and the redundant frame sets are configured to identify data frames whose redundant frames need to be generated among multiple data frames in the stream;

or

a second obtaining submodule, configured to;

obtain, according to the packet loss rates corresponding to the at least two transmission networks in the data transmission network system, the error tolerance aid information for the data forwarding node to adjust forward error correction redundancy for each data source block in the received stream to obtain an error tolerance stream, wherein the error tolerance aid information comprises forward error correction description information about forward error correction sets corresponding to the respective packet loss rates of the at least two transmission networks in the data transmission network system respectively, and the forward error correction set comprises forward error correction redundancy that needs to be allocated to each data source block under different packet loss rates respectively.

20. The network device according to claim 19, wherein:

each redundant frame set that is indicated by the description information meets the following condition;

a redundant frame set corresponding to a low packet loss rate is a subset of a redundant frame set corresponding to a high packet loss rate;

or

each forward error correction set that is indicated by the forward error correction description information meets the following condition;

a forward error correction set corresponding to a low packet loss rate is a subset of a forward error correction set corresponding to a high packet loss rate.

21. A network system, comprising:

a data forwarding node device, configured to;

receive a source stream sent from a source transmission network to a target transmission network;

perform error tolerance coding on the source stream according to respective packet loss rates of the source transmission network and the target transmission network as well as error tolerance aid information corresponding to the source stream to obtain an error tolerance stream; and

send the obtained error tolerance stream to the target transmission network; and

a network device, configured to;

obtain error tolerance aid information corresponding to a source stream according to packet loss rates corresponding to at least two transmission networks in a data transmission network system before sending the source stream to the data transmission network system; and

send the error tolerance aid information to the data forwarding node device, wherein the error tolerance aid information is used by the data forwarding node device in the data transmission network system to perform error tolerance coding processing on the received stream to obtain an error tolerance stream for reference.