CN102595252B - Streaming media forward error correction realization method and system - Google Patents
Streaming media forward error correction realization method and system Download PDFInfo
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- CN102595252B CN102595252B CN201110004961.6A CN201110004961A CN102595252B CN 102595252 B CN102595252 B CN 102595252B CN 201110004961 A CN201110004961 A CN 201110004961A CN 102595252 B CN102595252 B CN 102595252B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0075—Transmission of coding parameters to receiver
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/004—Arrangements for detecting or preventing errors in the information received by using forward error control
- H04L1/0045—Arrangements at the receiver end
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
- Two-Way Televisions, Distribution Of Moving Picture Or The Like (AREA)
- Error Detection And Correction (AREA)
Abstract
The present invention relates to a kind of streaming media forward error correction realization method and system, the method includes: transmitting terminal uses the transmission means identical with media code stream to send forward error correction (FEC) relevant information, and described FEC relevant information includes that FEC encoding scheme identifies；Receiving terminal receives and configures described FEC relevant information；Described receiving terminal receives FEC code stream according to the FEC relevant information of caching and parses FEC data, when media code stream packet loss being detected, utilizes described FEC data to carry out fec decoder reparation.Streaming media forward error correction realization method and system of the present invention can facilitate implementation streaming media forward error correction.
Description
Technical field
The present invention relates to stream media technology field, more particularly, to a kind of streaming media forward error correction implementation method and be
System.
Background technology
Along with the universal of broadband networks and the development of multimedia technology, the application of stream media technology is more and more extensive.At present
Streaming media service, be mostly by bit stream data by certain rule packing after, by packet-based communication network, carry out data
Distribution.Such as in IPTV (IPTV) application, many use TS over RTP (Transport Stream over
Real-time Transport Protocol, transmission stream is carried on RTP) or TS over UDP
(Transport Stream over User DatagramProtocol, transmission stream is carried on UDP) side
Formula, is distributed by IP network., will inevitably there are the feelings of packet loss in the characteristic forwarded as possible due to IP network
Condition.For solving this situation, have employed FEC (Forward Error Correction, forward error correction) mode more and code stream is entered
Row protection, the when of the most live.I.e. the media data packet to transmission, carries out FEC coding, obtains FEC redundant data packets, and
It is distributed again by IP network.As long as so terminal receives sufficient amount of media data packet and FEC redundancy packet, it is possible to
By certain algorithm, recover the media data packet of loss.
In order to ensure correct receiving and identifying out FEC code stream, and the correct work carrying out fec decoder recovery, eventually
End must obtain the relevant information of FEC, the such as load mode of FEC code stream, receiving port, FEC encoding scheme, redundancy, group
Size, FEC bag form etc..The method transmitting relevant FEC information by SDP defined in the related specifications of IETF with 3GPP.
But in some cases, terminal may lack this means being obtained FEC information by out-band methods such as SDP.
Such as at present in a lot of IPTV application, for direct broadcast band, terminal is typically only capable to get a group corresponding to channel code stream
Broadcast address and port.Not having RTSP to link, do not have SDP, the most above-mentioned FEC information, terminal all has no way of obtaining.Now, terminal is led to
Often can only rule according to a preconcerted arrangement do.The IPTV system of such as certain office point, agreement is for the code stream of certain channel in advance, its
Corresponding FEC code stream uses the multicast address as channel code stream, but port numbers uses the mode that code stream port numbers adds 2.
So, terminal just on the port of agreement, can receive corresponding FEC code stream while obtaining code stream.
This mode is very inconvenient.Rule, once it is determined that cannot change easily, is otherwise accomplished by amendment
The configuration information of all terminals, workload is the hugest, and bothers very much.It addition, belong to the terminal of an office point, take other
Behind office point, owing to the rule of agreement may be different, this terminal may will be unable to use in new office point.Additionally, in FEC information
Relevant parameter can not dynamically update, the most also can bring problem to terminal.
Summary of the invention
The technical problem to be solved in the present invention is to provide a kind of streaming media forward error correction realization method and system, in order to real
Existing streaming media forward error correction.
For solving above technical problem, the invention provides a kind of streaming media forward error correction implementation method, the method includes:
Transmitting terminal uses the transmission means identical with media code stream to send forward error correction (FEC) relevant information, described FEC phase
Pass information includes that FEC encoding scheme mark and FEC data encapsulation format identify；
Receiving terminal receives and configures described FEC relevant information；
Described receiving terminal receives FEC code stream according to the FEC relevant information of caching and parses FEC data, when matchmaker being detected
During body code stream packet loss, described FEC data are utilized to carry out fec decoder reparation.
Further, described FEC relevant information also includes organizing size, channel information, FEC code traffic identifier, FEC arithmetic element
Size, or the corresponding relation of media code stream and FEC code stream.
Further, transmitting terminal periodically sends described FEC relevant information.
Further, when described FEC relevant information has amendment, after the FEC relevant information that described transmitting terminal sends is amendment
FEC relevant information, described receiving terminal receives the information that this locality preserves that updates after described amended FEC relevant information.
Further, described FEC relevant information Motion Picture Experts Group's (MPEG) agreement based on extension or the reality of extension
Time host-host protocol (RTP) send.
Further, described media code stream and FEC code stream are packed transmission by transmitting terminal respectively.
For solving above technical problem, present invention also offers a kind of streaming media forward error correction and realize system, this system bag
Include transmitting terminal and receiving terminal, wherein:
Described transmitting terminal, for using the transmission means identical with media code stream to send forward error correction (FEC) relevant information,
Described FEC relevant information includes that FEC encoding scheme mark and FEC data encapsulation format identify；
Described receiving terminal includes:
Receive configuration module, be used for receiving and configure described FEC relevant information；
FEC code stream processing module, for receiving FEC code stream according to the FEC relevant information of caching and parsing FEC data,
When media code stream packet loss being detected, described FEC data are utilized to carry out fec decoder reparation.
Further, described FEC relevant information also includes organizing size, channel information, FEC code traffic identifier, FEC arithmetic element
Size, or the corresponding relation of media code stream and FEC code stream.
Streaming media forward error correction method and system of the present invention is by being correlated with that in-band method transmission FEC encodes and transmits
Information, as long as so terminal can receive media code stream, it is possible to gets corresponding FEC information, it is possible to realize easily
The dynamic renewal of FEC information.
Accompanying drawing explanation
Fig. 1 is the schematic diagram of streaming media forward error correction implementation method of the present invention；
Fig. 2 is to transmit FEC relevant information and the schematic diagram of FEC bag in TS flows；
Fig. 3 is the code stream schematic diagram utilizing RTP channel transfer FEC information；
Fig. 4 is the RTP extension header structure for transmitting FEC information；
Fig. 5 is the data structure for transmitting FEC information parameter in RTP bag；
Fig. 6 is the schematic diagram that streaming media forward error correction of the present invention realizes system.
Detailed description of the invention
The basic thought of streaming media forward error correction method and system of the present invention, is to transmit FEC phase by in-band method
Pass information, as long as so terminal can receive media code stream, it is possible to gets corresponding FEC information, it is possible to real easily
The dynamic renewal of existing FEC information.
Below in conjunction with accompanying drawing, embodiments of the invention are described in detail.It should be noted that do not conflicting
In the case of, the embodiment in the application and the feature in embodiment can be mutually combined.
As it is shown in figure 1, streaming media forward error correction implementation method of the present invention, the method includes:
Step 101: transmitting terminal uses the transmission means identical with media code stream to send forward error correction (FEC) relevant information,
Described FEC relevant information includes that FEC encoding scheme mark and FEC data encapsulation format identify；
Wherein FEC encoding scheme mark indicates used FEC error correction code algorithms, and FEC data encapsulation format identifies then
Indicate used FEC data packing form, the different corresponding different FEC algorithms of FEC encoding scheme mark.Different
The corresponding different FEC data encapsulation format of FEC data encapsulation format mark.The two parameter is necessary, in order to terminal recognition
The encapsulation format of FEC data, the FEC encryption algorithm etc. used；
In addition to FEC encoding scheme mark and FEC data encapsulation format identify, it is preferable that described FEC relevant information also includes
The parameter that FEC encoding scheme is relevant transmits relevant parameter with FEC data.Such as organize size, channel information, FEC code traffic identifier,
The size of FEC arithmetic element, or the corresponding relation of media code stream and FEC code stream.Specifically, this meaning of parameters is as follows:
Group size is for some FEC encoding scheme, and group size is probably fixing, or terminal can be from FEC number
It is resolved to corresponding parameter according in bag, so this parameter is to some FEC encoding scheme and FEC encapsulation format, is option；
Channel information such as transmission channel port numbers, passage used by FEC code stream is single channel or the dual pathways etc.,
This parameter is option.When not comprising this parameter in FEC information, terminal needs acquiescence to be single-channel mode, i.e. FEC code stream is
The multiplexing transmission channel of media code streams；
If the mark of corresponding FEC stream has lacked this parameter, terminal all can be able to identify by getting rid of
Code stream, identifies FEC stream, but the when of there is interference code stream, may result in erroneous judgement.So recommending in FEC information
All the time this parameter is comprised, in order to terminal can clearly identify FEC stream；
The size of FEC arithmetic element (symbol) is option for some FEC encoding scheme, this parameter.Such as
When FEC coding is the packet for TS over RTP, typically give tacit consent to the symbol size used, it is simply that 1336 bytes,
The i.e. length of 7 TS bags, adds the length of RTP head；
Media code stream comprises this parameter with the corresponding relation recommendation of FEC code stream in FEC information all the time, in order to terminal
Specify FEC and flow the media code stream protected.When only one road media code stream, or road FEC stream protects all of media code stream
Time, it is also possible to omit this parameter.
Above-mentioned FEC relevant information, according to the media transmission protocol used, is packaged by transmitting terminal, then use with
The transmission means that media code stream is identical sends.FEC relevant information can be carried by increasing relevant field in media data packet,
Can also be by defining new data packet format, the then mode of the transmission channel of multiplexed media code stream, send with media code stream.
This is not restricted by this programme.
When direct-broadcasting code stream, this FEC relevant information can periodically send, to ensure the new receiving terminal accessed
(such as terminal) can get relevant information in time.
When this FEC relevant information has amendment to update, then according to new parametric configuration relevant information, the most in a manner described
Send the information after updating.
Step 102: receiving terminal receives and configure described FEC relevant information；
While receiving terminal receives media code stream, also can receive the FEC phase using same way to transmit with media code stream
Pass information, receiving terminal analytically dependent FEC information, and configure accordingly, refer specifically to terminal and locally record these information, can
To be saved in internal memory, the parameter of related object example in the most directly amendment program, it is also possible to be recorded in storage device,
Such as in file.Concrete configuration mode is implemented decision by receiving terminal.As long as ensure receiving terminal is follow-up can be according to obtaining here
The information processing FEC code stream got.
When described FEC relevant information has amendment, the FEC relevant information that described transmitting terminal sends is that amended FEC is correlated with
Information, described receiving terminal updates, after receiving described amended FEC relevant information, the information that this locality preserves.
Step 103: described receiving terminal receives FEC code stream according to the FEC relevant information of caching and parses FEC data, when
When media code stream packet loss being detected, utilize FEC data to carry out fec decoder reparation, recover the media data packet lost.
Described FEC relevant information can Motion Picture Experts Group's (MPEG) agreement based on extension or the real-time Transmission of extension
Agreement (RTP) sends.
Extension with regard to both agreements provides specific embodiment respectively below:
Embodiment 1
The present embodiment is on the basis of MPEG-2TS, it is achieved in-band method transmission FEC relevant information.I.e. directly pass through when code stream
During MPEG-2TS streaming, can be by relevant FEC Information encapsulation in the PMT that TS flows.FEC redundant data can be as a road
ES (Elementary Stream, elementary stream) flows, and multiplexing is transmitted in TS code stream.Transmission is illustrated as shown in Figure 2:
Transmitting terminal by video PES (Packetized Elementary Stream, the elementary stream of packing), audio frequency PES,
Send after other ES and FEC ES stream, FEC relevant information multiplexing, after receiving terminal receives and demultiplexes, obtain video, audio frequency, FEC
And FEC relevant information, if packet loss being detected, then utilize FEC relevant information and FEC data to carry out forward error correction.
MPEG-2TS is carried out extended below:
In PMT, increase the fec_signal_descriptor of a program level, be defined as follows:
Note: the uimsbf in table represents signless integer (Unsigned integer, most significant
Bitfirst, the related definition referring specifically in ISO/IEC13818-1 standard), the bslbf in table represents Bit String (Bit
String, left bit first, the related definition referring specifically in ISO/IEC13818-1 standard), as follows.
1, descriptor_tag=127, shows that this descriptor is fec_signal_descriptor.Other are each
The implication of field is as follows:
Descriptor_length shows the length of this arq_signal_descriptor, sees ISO/
Related definition in IEC13818-1 standard；
Encoding_id shows used FEC encoding scheme, and different values represents different FEC error correction
Code algorithm；
Packaging_id shows used FEC data encapsulation format, and different values represents different FEC
Data packing form；
When the value of this field of group_count_flag is 1, show there is group_count field below, be zero
There is no group_count field；
When the value of this field of symbol_size_flag is 1, show there is symbol_size field below, be zero
There is no symbol_size field；
Reserved reserved field, should be set to 0 entirely；
Group_count expression group size, the when of not having, terminal needs according to parameters such as FEC encoding schemes certainly
Row adaptation；
Symbol_size represents symbol size during FEC computing, and the when of not having, terminal needs to compile according to FEC
The parameters such as code scheme are the most adaptive；
2, increase a stream_type type, be used for identifying FEC stream, such as when stream_type value is 0xFF, table
Show that corresponding pid stream is FEC stream；
3, in PMT, the fec_label_descriptor of ES rank is increased, for adding a FEC label to ES stream.
The Media Stream that label value is identical flows corresponding to same FEC.So can identify the corresponding relation of media code stream and FEC code stream.
It is defined as follows:
Wherein descriptor_tag=128, shows that this descriptor is fec_label_descriptor.Other are each
The implication of field is as follows:
Label label value, has the non-FEC stream of same label value, is flowed protection by the FEC with same label value.
For supporting the stream media system of above-mentioned MPEG-2TS extension, the handling process of its transmitting terminal and receiving terminal is such as
Under:
Transmitting terminal:
(1) according to the above-mentioned extension to MPEG-2TS, increase in PMT FEC relevant/information；By FEC relevant information middle finger
Fixed FEC encoding scheme, completes the generation of FEC data, and the FEC being packaged into corresponding format flows, and is multiplexed in TS stream；
(2) transmission with the addition of the TS code stream of FEC relevant information and data；
The relevant regulations that PMT sends, such as transmission frequency, renewal etc., the relevant regulations of MPEG-2 TS can be followed.By
Can send along with PMT together cycle in FEC information, thereby may be ensured that new access terminal can obtain FEC information in time.Equally
It is also ensured that renewal when FEC information changes；
Receiving terminal
(1) receive TS code stream, resolve PMT therein, therefrom obtain the relevant information of media code stream, and the relevant letter of FEC
Breath；
(2) according to the information obtained in PMT, TS stream is demultiplexed, obtain media code stream therein and FEC stream；
(3) when media code stream generation packet loss being detected, then utilize paid-in media bag and FEC bag, carry out FEC and repair
Multiple.
Relevant FEC information and the terminal of FEC stream can not be identified, corresponding FEC stream can be abandoned according to PID.
Embodiment 2
The present embodiment transmits FEC related signaling by RTP/RTCP, it is achieved transmission in the band of FEC relevant information.
When code stream is transmitted by rtp streaming (such as TS over RTP), can be by relevant FEC Information encapsulation at RTP/
In RTCP bag, it is transmitted by RTP/RTCP passage.Fig. 3 gives the signal utilizing RTP channel transfer FEC information.FEC is superfluous
Remainder evidence can be as a road rtp streaming, the RTP passage of multiplexed media code stream, or uses new RTP passage to be transmitted.
RTP is carried out extended below:
1, one special PT (the PT field in Payload Type, RTP packet header, for identification load type) of distribution
Value, such as 125, for identifying corresponding rtp streaming for transmitting FEC information.So for transmitting the RTP bag of FEC information,
Just can there is oneself independent serial number space, it is to avoid normal RTP code stream is interfered；
2, one RTP extension header of definition, for identifying which specification the RTP bag form of transmission FEC information follows.Only at PT
Value is equal to when 125 effective.Extension header defines as shown in Figure 4, it then follows the related definition of RFC3550.Defined by can be set
Profile field is a particular value, such as ascii character " FE ", to indicate that corresponding RTP loads, is for transmitting FEC letter
Breath.The different values of the Identifier field in extension header, show corresponding specification, and different specifications may be corresponding different
RTP bag form definition.Such as when Identifier value is ascii character " ZFEC ", then show followed by RTP load
In, the form of entrained FEC information parameter follows the relevant regulations in the present embodiment；
3, definition FEC information relevant parameter form in RTP bag.Owing to the partial parameters in FEC information belongs to optional
, for ease of structure message, the parameter in signaling can be used the structure of Type-Length-Value (TLV).I.e. basic knot
Structure is as shown in Figure 5.First pass through the type field and indicate different parameter types, then indicate this parameter value by Length field
Length, then carry concrete parameter value in Value field.If there being multiple parameter, then RTP load is exactly the most
Individual TLV structure.Need the FEC parameter supported as follows:
For supporting the stream media system of above-mentioned RTP extension, the handling process of its transmitting terminal and receiving terminal is as follows:
Transmitting terminal
(1) according to the above-mentioned extension to RTP, FEC relevant information is encapsulated in RTP bag；
(2) use the RTP passage of media bag, send the RTP bag carrying FEC relevant information；
The RTP bag of this FEC of carrying relevant information can send in the cycle, when FEC relevant information changes, then and root
According to the FEC relevant information after change, the message bag of structure RTP form, then send by above-mentioned rule.
Receiving terminal
(1) RTP bag, the demultiplexed RTP bag wherein carrying FEC relevant information are received；
(2) according to acquired FEC relevant information, FEC packet is received；
(3) when media rtp streaming generation packet loss being detected, utilize FEC relevant information and FEC bag, media bag is carried out FEC
Repair.
Corresponding to above method, present invention also offers a kind of streaming media forward error correction and realize system, as shown in Figure 6, should
System includes transmitting terminal and receiving terminal, wherein,
Transmitting terminal, for using the transmission means identical with media code stream to send forward error correction (FEC) relevant information, described
FEC relevant information includes that FEC encoding scheme mark and FEC data encapsulation format identify；
Further, described FEC relevant information also includes organizing size, channel information, FEC code traffic identifier, FEC arithmetic element
Size, or the corresponding relation of media code stream and FEC code stream.
Receiving terminal includes:
Receive configuration module, be used for receiving and configure described FEC relevant information；
FEC code stream processing module, for receiving FEC code stream according to the FEC relevant information of caching and parsing FEC data,
When media code stream packet loss being detected, described FEC data are utilized to carry out fec decoder reparation.
Further, described transmitting terminal periodically sends described FEC relevant information.
Further, when described FEC relevant information has amendment, after the FEC relevant information that described transmitting terminal sends is amendment
FEC relevant information, the reception configuration module of described receiving terminal receives and updates this locality after described amended FEC relevant information and protect
The information deposited.
Further, described FEC relevant information Motion Picture Experts Group's (MPEG) agreement based on extension or the reality of extension
Time host-host protocol (RTP) send.
Intelligible, functional module mentioned in system above is the related content that the present invention is different from prior art,
In the technical program, transmitting terminal and receiving terminal are not precluded from new or existing functional module.
Use technical scheme, it is possible to use family, while receiving media code stream, gets relevant easily
FEC relevant information, thus successfully realize reception and the reparation of FEC code stream.Meanwhile, when FEC relevant information has been changed,
User can also be notified in time, make corresponding adjustment.
In the present invention, media code stream and FEC code stream can be packed respectively, transmit respectively, it is also possible to by FEC data and media
Code stream combines packing transmission.Encoded and the relevant information of transmission by in-band method transmission FEC, if so terminal energy
Enough receive media code stream, it is possible to get corresponding FEC information, it is possible to realize the dynamic renewal of FEC information easily.When
Media code stream and FEC code stream are packed when transmitting respectively, and terminal can be according to the resource situation of oneself, it is determined whether need to receive
FEC code stream.When needing, it is possible to receive FEC code stream according to acquired FEC related transmitting information, and according to acquired FEC
Data packaging information therefrom parses FEC data, then according to acquired FEC code-related information, makees fec decoder computing,
Repair code stream.
One of ordinary skill in the art will appreciate that all or part of step in said method can be instructed by program
Related hardware completes, and described program can be stored in computer-readable recording medium, such as read only memory, disk or CD
Deng.Alternatively, all or part of step of above-described embodiment can also use one or more integrated circuit to realize.Accordingly
Ground, each module in above-described embodiment can realize to use the form of hardware, it would however also be possible to employ the form of software function module is real
Existing.The present invention is not restricted to the combination of the hardware and software of any particular form.
Claims (7)
1. a streaming media forward error correction implementation method, it is characterised in that the method includes:
Transmitting terminal uses the transmission means identical with media code stream periodically to send forward error correction FEC relevant information, described FEC phase
Pass information includes FEC encoding scheme mark, FEC data encapsulation format mark, group size, channel information, FEC code traffic identifier, FEC
The corresponding relation of the size of arithmetic element and media code stream and FEC code stream；Described FEC relevant information is by defining new packet
Form, the then mode of the transmission channel of multiplexed media code stream, send with media code stream；
Receiving terminal receives and configures described FEC relevant information；
Described receiving terminal receives FEC code stream according to the FEC relevant information of caching and parses FEC data, when media code being detected
During stream packet loss, described FEC data are utilized to carry out fec decoder reparation.
2. the method for claim 1, it is characterised in that: when described FEC relevant information has amendment, described transmitting terminal sends
FEC relevant information be amended FEC relevant information, described receiving terminal receives after described amended FEC relevant information more
The new local information preserved.
3. the method for claim 1, it is characterised in that: described FEC relevant information motion pictures expert based on extension
The realtime transmission protocol RTP of group MPEG agreement or extension sends.
4. the method for claim 1, it is characterised in that: described transmitting terminal is by described media code stream and FEC code stream difference
Packing transmission.
5. a streaming media forward error correction realizes system, it is characterised in that this system includes transmitting terminal and receiving terminal, wherein:
Described transmitting terminal, for using the transmission means identical with media code stream periodically to send forward error correction FEC relevant information,
Described FEC relevant information includes FEC encoding scheme mark, FEC data encapsulation format mark, group size, channel information, FEC code
Traffic identifier, the size of FEC arithmetic element and media code stream and the corresponding relation of FEC code stream；Described FEC relevant information is by definition
New data packet format, the then mode of the transmission channel of multiplexed media code stream, send with media code stream；
Described receiving terminal includes:
Receive configuration module, be used for receiving and configure described FEC relevant information；
FEC code stream processing module, for receiving FEC code stream according to the FEC relevant information of caching and parsing FEC data, works as inspection
When measuring media code stream packet loss, described FEC data are utilized to carry out fec decoder reparation.
6. system as claimed in claim 5, it is characterised in that: when described FEC relevant information has amendment, described transmitting terminal sends
FEC relevant information be amended FEC relevant information, the reception of described receiving terminal configuration module receives described amended
The information that this locality preserves is updated after FEC relevant information.
7. system as claimed in claim 5, it is characterised in that: described FEC relevant information motion pictures expert based on extension
The realtime transmission protocol RTP of group MPEG agreement or extension sends.
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| CN201110004961.6A CN102595252B (en) | 2011-01-11 | 2011-01-11 | Streaming media forward error correction realization method and system |
| PCT/CN2011/081236 WO2012094915A1 (en) | 2011-01-11 | 2011-10-25 | Method and system for implementing forward error correction for streaming media |
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| CN201110004961.6A CN102595252B (en) | 2011-01-11 | 2011-01-11 | Streaming media forward error correction realization method and system |
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| KR102127685B1 (en) * | 2013-04-17 | 2020-06-29 | 삼성전자주식회사 | Apparatus and method for transmitting and receiving forward error correction packet |
| CN105827361B (en) * | 2015-01-08 | 2019-02-22 | 上海交通大学 | A kind of FEC method based on media content |
| CN104811651B (en) * | 2015-03-20 | 2017-08-25 | 中国人民解放军信息工程大学 | Circuit domain harassing call is noninductive replacement method |
| CN106330392A (en) * | 2015-07-01 | 2017-01-11 | 中兴通讯股份有限公司 | PLMN information processing method, system and device |
| CN107483144B (en) * | 2016-06-07 | 2021-11-23 | 中兴通讯股份有限公司 | Forward error correction feedback information transmission method and device |
| CN110312141A (en) * | 2019-07-05 | 2019-10-08 | 杭州当虹科技股份有限公司 | A kind of event mode internet live broadcasting method |
| WO2021047606A1 (en) * | 2019-09-10 | 2021-03-18 | 华为技术有限公司 | Message processing method and apparatus, and chip |
| CN112564855A (en) * | 2019-09-10 | 2021-03-26 | 华为技术有限公司 | Message processing method, device and chip |
| CN114070458B (en) * | 2020-08-04 | 2023-07-11 | 成都鼎桥通信技术有限公司 | Data transmission method, device, equipment and storage medium |
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| US6430159B1 (en) * | 1998-12-23 | 2002-08-06 | Cisco Systems Canada Co. | Forward error correction at MPEG-2 transport stream layer |
| CN100579069C (en) * | 2006-07-25 | 2010-01-06 | 中兴通讯股份有限公司 | The implementation method of voice forward error correction message transmission in the CDMA2000 system |
| CN102111233B (en) * | 2009-12-28 | 2014-03-26 | 华为软件技术有限公司 | Method and system for processing forward error correction (FEC) data |
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2011
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|---|---|---|---|---|
| CN1859580A (en) * | 2005-10-17 | 2006-11-08 | 华为技术有限公司 | Multimedia data network realtime transfer method for supporting error elasticity |
| CN101505202A (en) * | 2009-03-16 | 2009-08-12 | 华中科技大学 | Adaptive error correction method for stream media transmission |
| CN101719809A (en) * | 2009-11-25 | 2010-06-02 | 中兴通讯股份有限公司 | Method and system for recovering lost media data packet |
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