CN101515934B - Method, device and communication system for forwarding scalable video coded data message - Google Patents
Method, device and communication system for forwarding scalable video coded data message Download PDFInfo
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- CN101515934B CN101515934B CN2009101193725A CN200910119372A CN101515934B CN 101515934 B CN101515934 B CN 101515934B CN 2009101193725 A CN2009101193725 A CN 2009101193725A CN 200910119372 A CN200910119372 A CN 200910119372A CN 101515934 B CN101515934 B CN 101515934B
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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
- H04L1/0078—Avoidance of errors by organising the transmitted data in a format specifically designed to deal with errors, e.g. location
- H04L1/0084—Formats for payload data
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
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Abstract
The invention discloses a method, a device and a communication system for forwarding scalable video coded data message, belonging to the communication technology field. The method comprises: receiving the scalable video multicast coded data message encapsulated by real time transmission protocol; selecting the data message suitable for downstream node from the data message to form the multicast data stream to be forwarded, wherein the real time transmission protocol serial numbers of the data message in the multicast data stream are discontinuous; updating the discontinuous real time transmission protocol serial numbers of the data message in the multicast data stream into continuous real time transmission protocol serial numbers; forwarding the multicast data stream formed by the data message with the updated continuous real time transmission protocol serial numbers to the downstream node. According to the technical scheme provided by the embodiment of the invention, the serial numbers of the RTP-encapsulated SVC multicast data stream sent by the network equipment are continuous.
Description
Technical field
The present invention relates to communication technical field, be specifically related to method, equipment and the communication system of forwarding scalable video coded data message.
Background technology
Along with video coding technique and standardized progress and development; And the raising of network infrastructure and various PC (PC), mobile device computing capability; Daily life is more and more goed deep in the various application relevant with digital video, for example, and Multimedia Message, visual telephone, video conference; Streaming media service on internet and the wireless network, the television broadcasting of SD and high definition resolution etc.Because different application also is not quite similar to the demand of video, scalable video (SVC:ScalableVideo Coding) has therefore been proposed, scalable video is the expansion technique of coding techniques H.264.
Scalable video becomes a single bit sequence with a plurality of video layer digital coding.(DID, TID when being a certain combination QID), can claim that it is certain " layer " data of SVC coded data in the combination of scalable field of time (TID), spatial scalable field (DID) and quality scalable field (QID) in the SVC extension header.Usually, the bit stream after coding is accomplished comprises a basic layer and several scalable layer (but perhaps being called extension layer, enhancement layer).Wherein, basic layer and H.264/ advanced video coding (AVC) compatibility.If one is only supported that terminal H.264/AVC receives the SVC data, it can only discern base layer data so, can not discern the scalable layer data.The terminal can and show on screen basic layer decoder.Decoding base layer data and scalable layer data together in the terminal, just better video pictures can occur.The target of using SVC is after data source is once encoded; Under the situation of different video application and different terminals (high-resolution TV, common resolution television set, portable terminal etc.); Terminal self only needs to select just can satisfy the requirement of self through the some or all of data of Network Transmission, and can successful decoding and displaying.
Because the development of broadband technology; IPTV (IPTV:Internet Protocol TV) has obtained development rapidly; IPTV adopts Internet protocol (IP:Internet Protocol) technology, and during transmitting video data, data generally adopt RTP (RTP:Real Time TransportProtocol) encapsulation in IP network; To guarantee real-time Transmission, each RTP message all has individual sequence number corresponding with it.Under the situation that adopts the encapsulation of RTP single current, followed by the scalable layer data message of correspondence, so repeat behind base layer data message; Access device is transmitted to receiving terminal in that the SVC video data when adaptive, is extracted message partly or completely.
Suppose that a base layer data message has the scalable layer data message of two correspondences, if access device has received 6 data messages, sequence number is respectively 1,2,3,4,5,6; Then wherein 1 and 4 are base layer data messages; 2 and 5 is data messages of scalable layer one, and 3 and 6 is data messages of scalable layer two, then according to the difference at terminal; Access device may be with data message 1 and 4; Or data message 1,2,4 and 5, or data message 1,3,4 and 6, or data message 1,2,3,4,5 and 6 is transmitted to the terminal; It is thus clear that except that data message 1,2,3,4,5 and 6 is transmitted to the terminal, the sequence number of the data message of other various combinations is all discontinuous.
After the discontinuous data message of these sequence numbers is received at the terminal, can think by mistake losing of RTP message taken place, initiate repeat requests thereby cause retransmission module.And the data message that in fact is not transmitted to the terminal is not that the terminal is needed, can claim that this situation is " pseudo-packet loss ".
The inventor finds in to the research of prior art: because that access device sends to the sequence number of data message at terminal is discontinuous; Cause the terminal to send repeat requests to unwanted data message; Access device also need be handled these repeat requests; Increase the burden of access device like this, reduced the handling property of access device.
Summary of the invention
The embodiment of the invention provides method, equipment and the communication system of forwarding scalable video coded data message, the technical scheme of using the embodiment of the invention to provide, and the sequence number of the SVC multicast data message that the RTP that the network equipment is sent encapsulates is continuous.
The purpose of the embodiment of the invention realizes through following technical scheme:
The embodiment of the invention provides a kind of method of network equipment forwarding scalable video coded data message, comprising:
Receive the scalable video multicast data message of RTP encapsulation;
The data message of from said data message, selecting to be fit to downstream node forms multicast traffic stream to be transmitted, and the real time transmission protocol serial of data message is discontinuous in the said multicast traffic stream;
With the discontinuous real time transmission protocol sequence number update of data message in the said multicast traffic stream is the continuous real time transmission protocol sequence number;
Transmit the multicast traffic stream of the data message composition that is updated to the continuous real time transmission protocol sequence number to said downstream node.
The embodiment of the invention provides a kind of network equipment, comprising:
Receiving element is used to receive the scalable video multicast data message that RTP encapsulates;
Adaptation unit is used for forming multicast traffic stream to be transmitted from the data message that said data message is selected to be fit to downstream node, and the real time transmission protocol serial of data message is discontinuous in the said multicast traffic stream;
Updating block, the discontinuous real time transmission protocol sequence number update that is used for said multicast traffic stream data message is the continuous real time transmission protocol sequence number;
Transmitting element is used for the multicast traffic stream of forming to the data message that said downstream node forwarding is updated to the continuous real time transmission protocol sequence number.
The embodiment of the invention provides a kind of communication system, comprises the network equipment that the embodiment of the invention provides.
Can find out from the above technical scheme that the embodiment of the invention provides; Because the embodiment of the invention can be continuous sequence number with the discontinuous RTP sequence number update of data message in the scalable video multicast traffic stream; Make the terminal can not send repeat requests for unwanted data message; Can reduce terminal resource needed consumption; Also can reduce the taking of Internet resources, and make the network equipment not need the repeat requests of processing unnecessary, can improve the utilization ratio of network equipment resource.
Description of drawings
In order to be illustrated more clearly in the embodiment of the invention or technical scheme of the prior art; To do to introduce simply to the accompanying drawing of required use in embodiment or the description of the Prior Art below; Obviously, the accompanying drawing in describing below only is some embodiments of the present invention, for those of ordinary skills; Under the prerequisite of not paying creative work property, can also obtain other accompanying drawing according to these accompanying drawings.
Fig. 1 is the flow chart of the method embodiment one of network equipment forwarding scalable video coded data message in the embodiment of the invention;
Fig. 2 is the flow chart of the method embodiment two of network equipment forwarding scalable video coded data message in the embodiment of the invention;
Fig. 3 is the structure chart of network equipment embodiment one in the embodiment of the invention;
Fig. 4 is the structure chart of network equipment embodiment two in the embodiment of the invention;
Fig. 5 is a transfer of data sketch map among the communication system embodiment in the embodiment of the invention.
Embodiment
To combine the accompanying drawing in the embodiment of the invention below, the technical scheme in the embodiment of the invention is carried out clear, intactly description, obviously, described embodiment only is the present invention's part embodiment, rather than whole embodiment.Based on the embodiment among the present invention, those of ordinary skills are not making the every other embodiment that is obtained under the creative work prerequisite, all belong to the scope of the present invention's protection.
The embodiment of the invention provides the method and the relevant device of network equipment forwarding scalable video coded data message; Introduce the method for the network equipment forwarding scalable video coded data message that the embodiment of the invention provides earlier; Fig. 1 has described the flow process of the method embodiment of the network equipment forwarding scalable video coded data message that the embodiment of the invention provides, comprising:
101, receive the SVC multicast data message of RTP encapsulation;
Generally speaking, the SVC multicast data message of the RTP of reception encapsulation has continuous RTP sequence number; If do not have continuous RTP sequence number, show that there is the packet loss phenomenon in the upper reaches, can adopt the mode of re-transmission to go for the SVC multicast data message of asking retransmission of lost.
102, from data message, select to be fit to the data message formation multicast traffic stream to be transmitted of downstream node, the RTP sequence number of data message is discontinuous in this multicast traffic stream;
Because the data message of the needs of different downstream nodes is different, the data message of the suitable downstream node of therefore selecting does not possess continuous RTP sequence number probably; Wherein, downstream node can be the terminal or the network equipment that the data message is transmitted.
103, the discontinuous RTP sequence number update with data message in the multicast traffic stream is continuous RTP sequence number;
A sequence number (Sequence Number) field is arranged in the heading of RTP data message, and what this field was preserved is the corresponding RTP sequence number of this data message; Therefore the RTP sequence number in the sequence-number field of data message being upgraded, can be continuous RTP sequence number with the discontinuous RTP sequence number update of data message in the multicast traffic stream just.
The original discontinuous RTP sequence number of supposing the data message at suitable certain terminal is 1,2,4 and 5, can be 401,402,403 and 404 with the RTP sequence number update of these 4 data messages then, thereby make the RTP sequence number after the renewal continuous.It is understandable that the embodiment of the invention does not limit the form of continuous RTP sequence number, only need the realization that sequence-number field can be stored can not influence the embodiment of the invention.
104, transmit the multicast traffic stream of the data message composition that is updated to continuous RTP sequence number to downstream node.
To send to downstream node by the multicast traffic stream that the data message that is updated to continuous RTP sequence number is formed, downstream node can think that the sequence number of the data message in the multicast traffic stream is continuous, thereby can not send repeat requests, therefore pseudo-packet loss can not occur.
From the above; Present embodiment can be continuous RTP sequence number with the discontinuous RTP sequence number update of data message in the multicast traffic stream; Make downstream node can not reduce the consumption of downstream node resource needed, also can reduce taking Internet resources for unwanted data message sends repeat requests; And make the network equipment not need the repeat requests of processing unnecessary, can improve the utilization ratio of network equipment resource.
Because data message in data message transfers to the process of downstream node, may occur loses or makes mistakes; So the network equipment can be preserved the data message that obtains in a period of time; For example for SVC video data message, the network equipment generally can be preserved the video data that can play for 8 seconds.
When the network equipment has been preserved data message; If upgraded the RTP sequence number of data message; Then included RTP sequence number is the RTP sequence number after data message upgrades in the repeat requests of downstream node transmission; Therefore need the data message that retransmits in order can correctly to send to downstream node, the retransmission method that the embodiment of the invention provides can also comprise: the mapping relations of preserving discontinuous RTP sequence number and continuous RTP sequence number.The quantity of the mapping relations of preserving is corresponding with the quantity of the data message of preservation, and promptly the mapping relations of the sequence number of each data message of being preserved can be preserved.
These mapping relations can be kept in the sequence number mapping relations table, and a kind of sequence number mapping relations table that the embodiment of the invention provides is as shown in table 1.
Table 1, sequence number mapping relations table
Fig. 2 has described the flow process of the method embodiment two of the network equipment forwarding scalable video coded data message that the embodiment of the invention provides, comprising:
201, receive the SVC multicast data message of RTP encapsulation;
202, from data message, select to be fit to the data message formation multicast traffic stream to be transmitted of downstream node, the RTP sequence number of data message is discontinuous in this multicast traffic stream;
203, the discontinuous RTP sequence number update with data message in the multicast traffic stream is continuous RTP sequence number;
204, calculate the data message upgraded the RTP sequence number verification and; This verification and corresponding with the new RTP sequence number of this data message;
Verification and be that data computation according to whole data message obtains; If therefore the RTP sequence number of data message upgrades; The verification that then need recomputate data message with, make verification and corresponding, thereby avoid thinking by mistake that the data message that has upgraded the RTP sequence number is incorrect with data message.
205, use in the heading of the data message that the verification calculate and renewal be updated the RTP sequence number verification and;
206, preserve the mapping relations of discontinuous RTP sequence number and continuous RTP sequence number;
207, transmit the multicast traffic stream of the data message composition that is updated to continuous RTP sequence number to downstream node.
It is understandable that, 206 and 204,205,206 sequencings do not carried out, only need 204 and 206 all after 203 execution can not influence the realization of the embodiment of the invention.
208, reception is from the repeat requests of downstream node, and this repeat requests comprises the RTP sequence number after the data message of needs re-transmission upgrades;
209, confirm the original RTP sequence number of the data message that needs retransmit according to the mapping relations of preserving;
210, from the data message of preserving, search the data message that needs retransmit according to original RTP sequence number;
211, the RTP sequence number update with the data message that finds is the RTP sequence number after upgrading;
212, the data message of RTP sequence number update for the RTP sequence number after upgrading sent to downstream node.
From the above; Present embodiment can be continuous RTP sequence number with the discontinuous RTP sequence number update of data message in the multicast traffic stream; Make downstream node can not reduce the consumption of downstream node resource needed, also can reduce taking Internet resources for unwanted data message sends repeat requests; And make the network equipment not need the repeat requests of processing unnecessary, can improve the utilization ratio of network equipment resource; Further the mapping relations of discontinuous RTP sequence number and continuous RTP sequence number are preserved, can guarantee that the network equipment sends the proper data message to downstream node when retransmitting; Further to the verification of data message with upgrade, can avoid thinking by mistake the re-transmission that the data message that has upgraded the RTP sequence number is incorrect and produce.
Introduce the network equipment that the embodiment of the invention provides again, Fig. 3 has described the structure of embodiment of the invention network equipment embodiment one, comprising:
Receiving element 301 is used to receive the scalable video multicast data message that RTP encapsulates;
Updating block 303, the discontinuous RTP sequence number update of the multicast traffic stream data message that is used for adaptation unit 302 is formed is continuous RTP sequence number;
Transmitting element 304 is used for transmitting to downstream node discontinuous RTP sequence number and is updated the multicast traffic stream that unit 303 is updated to the data message composition of continuous RTP sequence number.
From the above; The present embodiment of the network equipment can be continuous RTP sequence number with the discontinuous RTP sequence number update of data message in the multicast traffic stream; Make downstream node can not reduce the consumption of downstream node resource needed, also can reduce taking Internet resources for unwanted data message sends repeat requests; And make the network equipment not need the repeat requests of processing unnecessary, can improve the utilization ratio of network equipment resource; And when using the present embodiment on-premise network of the network equipment, need not transform, guarantee to reduce the cost of arranging net in the compatibility preferably existing downstream node and data source; And owing to be that the RTP sequence number is upgraded, and need not increase new RTP sequence number, and therefore also need prior protocols not upgraded, possess compatible preferably.
Further, can correctly retransmit the data message that has upgraded the RTP sequence number to downstream node in order to ensure the network equipment, the network equipment that the embodiment of the invention provides can also comprise:
Preserve the unit, be used to preserve the mapping relations of discontinuous RTP sequence number and the continuous RTP sequence number of updating block 303 renewals.
Further, this preservation unit further is used to preserve the data message that receiving element receives.
Fig. 4 has described the structure of the network equipment embodiment two that the embodiment of the invention provides, comprising:
Receiving element 401 is used to receive the scalable video multicast data message that RTP encapsulates; Reception is from the repeat requests of downstream node, and this repeat requests comprises the RTP sequence number after the data message of needs re-transmission upgrades;
Updating block 403, the discontinuous RTP sequence number update of the multicast traffic stream data message that is used for adaptation unit 402 is formed is continuous RTP sequence number; Use in computing unit 404 verification that calculates and the heading that upgrades the data message that has been updated the RTP sequence number verification with; With the RTP sequence number of the RTP sequence number update of searching the data message that unit 407 finds after for the renewal that retransmits request package and draw together;
Transmitting element 406 is used for transmitting to downstream node discontinuous RTP sequence number and is updated the multicast traffic stream that unit 303 is updated to the data message composition of continuous RTP sequence number; The RTP sequence number is updated the data message that unit 403 is updated to the RTP sequence number after the renewal to be sent to downstream node;
From the above; The present embodiment of the network equipment can be continuous RTP sequence number with the discontinuous RTP sequence number update of data message in the multicast traffic stream; Make downstream node can not reduce the consumption of downstream node resource needed, also can reduce taking Internet resources for unwanted data message sends repeat requests; And make the network equipment not need the repeat requests of processing unnecessary, can improve the utilization ratio of network equipment resource; Further the mapping relations of discontinuous RTP sequence number and continuous RTP sequence number are preserved, can guarantee that the network equipment sends the proper data message to downstream node; Further to the verification of data message with upgrade, can avoid thinking by mistake the re-transmission that the data message that has upgraded the RTP sequence number is incorrect and produce; And when using the present embodiment on-premise network of the network equipment, need not transform, guarantee to reduce the cost of arranging net in the compatibility preferably existing downstream node and data source; And owing to be that the RTP sequence number is upgraded, and need not increase new RTP sequence number, and therefore also need prior protocols not upgraded, possess compatible preferably.
The embodiment of the invention also provides communication system, and this communication system comprises the network equipment that the embodiment of the invention provides.Fig. 5 has described the transfer process of data message among the communication system embodiment that the embodiment of the invention provides; As shown in Figure 5; Data source 501 has been sent 6 data messages through IP network to the network equipment 502, and sequence number is respectively 1,2,3,4,5,6, and wherein data message 1 and 4 belongs to basic layer; Data message 2 and 5 belongs to scalable layer one, and data message 3 and 6 belongs to scalable layer two.
The network equipment 502 confirms that downstream node 503 needs the data message of basic layer, and promptly sequence number is 1 and 4 data message; Downstream node 504 needs the data message of basic layer and scalable layer one, and promptly sequence number is 1,2,4 and 5 data message; Downstream node 505 needs the data message of basic layer and scalable layer two, and promptly sequence number is 1,3,4 and 6 data message.
The network equipment 50 is continuous sequence number with the discontinuous sequence number update of the data message that each downstream node needs, and is 501 and 502 with the sequence number update of downstream node 503 needed data messages, and is sent to downstream node 503; The sequence number update of downstream node 504 needed data messages is 101,102,103 and 104, and is sent to downstream node 504; The sequence number update of downstream node 505 needed data messages is 801,802,803 and 804, and is sent to downstream node 505.
From the above; The network equipment in the present embodiment of communication system can be continuous sequence number with the discontinuous sequence number update of data message in the multicast traffic stream; Make downstream node can not reduce the consumption of downstream node resource needed, also can reduce taking Internet resources for unwanted data message sends repeat requests; And make the network equipment not need the repeat requests of processing unnecessary, can improve the utilization ratio of network equipment resource; And when using the present embodiment on-premise network of the network equipment, need not transform, guarantee to reduce the cost of arranging net in the compatibility preferably existing downstream node and data source; And owing to be that sequence number is upgraded, and need not increase new sequence number, and therefore also need prior protocols not upgraded, possess compatible preferably.
One of ordinary skill in the art will appreciate that all or part of flow process that realizes in the foregoing description method; Be to instruct relevant hardware to accomplish through computer program; Described program can be stored in the computer read/write memory medium; This program can comprise the flow process like the embodiment of above-mentioned each side method when carrying out.Wherein, described storage medium can be magnetic disc, CD, read-only storage memory body (Read-OnlyMemory, ROM) or at random store memory body (Random Access Memory, RAM) etc.
More than the method equipment and the communication system of the forwarding scalable video coded data message that the embodiment of the invention provided have been carried out detailed introduction, the explanation of above embodiment just is used for help understanding method of the present invention and thought thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (11)
1. the method for a network equipment forwarding scalable video coded data message is characterized in that, comprising:
Receive the scalable video multicast data message of RTP encapsulation;
The data message of from said data message, selecting to be fit to downstream node forms multicast traffic stream to be transmitted, and the real time transmission protocol serial of data message is discontinuous in the said multicast traffic stream;
With the discontinuous real time transmission protocol sequence number update of data message in the said multicast traffic stream is the continuous real time transmission protocol sequence number;
Transmit the multicast traffic stream of the data message composition that is updated to the continuous real time transmission protocol sequence number to said downstream node.
2. the method for network equipment forwarding scalable video coded data message as claimed in claim 1; It is characterized in that, be further to comprise behind the continuous real time transmission protocol sequence number with the discontinuous real time transmission protocol sequence number update of data message in the said multicast traffic stream:
Preserve the mapping relations of said discontinuous real time transmission protocol sequence number and said continuous real time transmission protocol sequence number.
3. the method for network equipment forwarding scalable video coded data message as claimed in claim 2 is characterized in that, further comprises behind the scalable video multicast data message of reception RTP encapsulation:
Preserve said scalable video multicast data message.
4. the method for network equipment forwarding scalable video coded data message as claimed in claim 3 is characterized in that, transmits to said downstream node further to comprise after the data message that is updated to the continuous real time transmission protocol sequence number is formed multicast traffic stream:
Reception is from the repeat requests of said downstream node, and said repeat requests comprises the real time transmission protocol serial after the data message of needs re-transmission upgrades;
Confirm the original real time transmission protocol serial of the data message that said needs retransmit according to said mapping relations;
From the data message of preserving, search the data message that needs retransmit according to said original real time transmission protocol serial;
The real time transmission protocol serial of the data message that finds is updated to the real time transmission protocol serial after the said renewal;
The data message that real time transmission protocol serial is updated to the real time transmission protocol serial after the renewal sends to said downstream node.
5. like the method for the arbitrary described network equipment forwarding scalable video coded data message of claim 1 to 4; It is characterized in that, before said downstream node is transmitted the data message composition multicast traffic stream that is updated to the continuous real time transmission protocol sequence number, also comprise:
Verification and, the said verification of data message of real time transmission protocol serial and corresponding with the new real time transmission protocol serial of this data message have been upgraded in calculating;
Use in said verification and the heading that upgrades the said data message that has upgraded real time transmission protocol serial verification with.
6. a network equipment is characterized in that, comprising:
Receiving element is used to receive the scalable video multicast data message that RTP encapsulates;
Adaptation unit is used for forming multicast traffic stream to be transmitted from the data message that said data message is selected to be fit to downstream node, and the real time transmission protocol serial of data message is discontinuous in the said multicast traffic stream;
Updating block, the discontinuous real time transmission protocol sequence number update that is used for said multicast traffic stream data message is the continuous real time transmission protocol sequence number;
Transmitting element is used for the multicast traffic stream of forming to the data message that said downstream node forwarding is updated to the continuous real time transmission protocol sequence number.
7. the network equipment as claimed in claim 6 is characterized in that, the said network equipment also comprises:
Preserve the unit, be used to preserve the mapping relations of discontinuous real time transmission protocol sequence number and the continuous real time transmission protocol sequence number of said updating block renewal.
8. the network equipment as claimed in claim 7 is characterized in that, said preservation unit also is used to preserve the data message that said receiving element receives.
9. the network equipment as claimed in claim 8 is characterized in that, said receiving element also is used to receive the repeat requests from said downstream node, and said repeat requests comprises the real time transmission protocol serial after the data message of needs re-transmission upgrades;
The said network equipment also comprises searches the unit, is used for confirming according to the mapping relations that said preservation unit is preserved the original real time transmission protocol serial of the data message that said needs retransmit; From the data message of preserving, search the data message that needs retransmit according to said original real time transmission protocol serial;
Said updating block also is used for said real time transmission protocol serial of searching the data message that the unit finds is updated to the real time transmission protocol serial after the said renewal;
Said transmitting element also is used for real time transmission protocol serial is sent to said downstream node by the data message that said updating block is updated to the real time transmission protocol serial after the renewal.
10. like the arbitrary described network equipment of claim 6 to 9, it is characterized in that the said network equipment also comprises:
Computing unit is used to calculate by said updating block and has upgraded verification and, the said verification of data message of real time transmission protocol serial and corresponding with the new real time transmission protocol serial of this data message;
Said updating block, the verification that also is used for using verification that said computing unit calculates and the heading that upgrades the said data message that has upgraded real time transmission protocol serial with.
11. a communication system is characterized in that, comprises like the arbitrary described network equipment of claim 6 to 9.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101193725A CN101515934B (en) | 2009-03-24 | 2009-03-24 | Method, device and communication system for forwarding scalable video coded data message |
| PCT/CN2010/071086 WO2010108416A1 (en) | 2009-03-24 | 2010-03-17 | Method, device and communication system for forwarding scalable video coding data messages |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2009101193725A CN101515934B (en) | 2009-03-24 | 2009-03-24 | Method, device and communication system for forwarding scalable video coded data message |
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| Publication Number | Publication Date |
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| CN101515934A CN101515934A (en) | 2009-08-26 |
| CN101515934B true CN101515934B (en) | 2012-07-04 |
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| WO (1) | WO2010108416A1 (en) |
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| CN101515934B (en) * | 2009-03-24 | 2012-07-04 | 华为技术有限公司 | Method, device and communication system for forwarding scalable video coded data message |
| CN109842856A (en) * | 2017-11-29 | 2019-06-04 | 成都鼎桥通信技术有限公司 | A kind of method and apparatus shielding uplink packet loss |
| CN112533154B (en) * | 2019-09-19 | 2022-04-22 | 成都鼎桥通信技术有限公司 | Data processing method, device and storage medium |
| CN113872735B (en) * | 2020-06-30 | 2023-10-24 | 京东方科技集团股份有限公司 | Data transmission method, device and equipment |
| CN113038064B (en) * | 2021-05-24 | 2021-08-20 | 北京电信易通信息技术股份有限公司 | Mobile terminal conference system |
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| EP1742476A1 (en) * | 2005-07-06 | 2007-01-10 | Thomson Licensing | Scalable video coding streaming system and transmission mechanism of the same system |
| WO2008056878A1 (en) * | 2006-11-09 | 2008-05-15 | Electronics And Telecommunications Research Institute | Method for determining packet type for svc video bitstream, and rtp packetizing apparatus and method using the same |
| WO2008088132A1 (en) * | 2007-01-19 | 2008-07-24 | Electronics And Telecommunications Research Institute | Time-stamping apparatus and method for rtp packetization of svc coded video, and rtp packetization system using the same |
| CN101515934B (en) * | 2009-03-24 | 2012-07-04 | 华为技术有限公司 | Method, device and communication system for forwarding scalable video coded data message |
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| WO2010108416A1 (en) | 2010-09-30 |
| CN101515934A (en) | 2009-08-26 |
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