CN100571217C - A kind of method, R-T unit and system that in data transmission procedure, resists packet loss - Google Patents
A kind of method, R-T unit and system that in data transmission procedure, resists packet loss Download PDFInfo
- Publication number
- CN100571217C CN100571217C CN200710152218.9A CN200710152218A CN100571217C CN 100571217 C CN100571217 C CN 100571217C CN 200710152218 A CN200710152218 A CN 200710152218A CN 100571217 C CN100571217 C CN 100571217C
- Authority
- CN
- China
- Prior art keywords
- data packets
- raw data
- grouping
- packet
- module
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Images
Landscapes
- Detection And Prevention Of Errors In Transmission (AREA)
- Data Exchanges In Wide-Area Networks (AREA)
Abstract
The present invention relates to the data packet transmission technology, particularly a kind ofly can resist packet lost data packets transmission method and sending and receiving device in transmission course.Solve the technical problem that to recover continuous packet loss at receiving terminal by the present invention.Implementation method is: transmitting terminal is to the grouping that interlocks of initial data packet sequence, and generates redundancy packet of each grouping; Receiving terminal is resequenced to raw data packets, then uses the redundancy packet that belongs to this raw data packets place of losing grouping that it is recovered if there is original packet to lose.Implementation method of the present invention is simple, and continuous packet loss is had good opposing effect, has promoted user experience.
Description
Technical field
The present invention relates to the data packet transmission technology, particularly a kind ofly can resist packet lost data packets transmission method, R-T unit and system in transmission course.
Background technology
Digital signal often because there are various interference in transmission channel, makes the data of transmission error code occur in transmission course.In order can in time to find and to correct a mistake, before sending, digital signal all needs to carry out chnnel coding, and chnnel coding makes receiving terminal can find the mistake that data produce in transmission course by adding suitable redundancy overhead and carrying out the appropriate algorithm conversion.For some complicated chnnel coding algorithms, can not only find wrong position, can also correct the mistake that is produced to a certain extent.For example; in multimedia application based on mobile communications network; multi-medium data need be sent to user terminal by wireless channel; because the existence of various interference in the wireless transmission environment; as the electromagnetic interference in space, multipath interference, various noises etc.; in the data flow that transmits, produce error code or loss of data through regular meeting, cause the image of receiving terminal to produce jumping, discontinuous, phenomenon such as mosaic appears.
In IP network based on packet switching, data link layer between physical layer and network layer, be responsible for setting up between the adjacent node data link and on this link transmit data frames.One of basic function of data link layer is exactly to carry out error control, the design of error control has two kinds of coding strategies: a kind of is the error correcting code scheme, need allow each transmission grouping carry abundant redundant information, so that can find and automatic transmission error correction at receiving terminal, as Hamming code, Reed Solomon code, convolution code, interlaced code or the like; Another kind is the error detection code scheme, need allow grouping carry certain redundant information, according to these redundant informations, receiving terminal can find to have occurred mistake, but can not determine it is which or which position is wrong, and oneself can not transmission error correction, as parity code, cyclic redundancy code etc.
By above coding strategy, after receiving terminal is decoded, damage if find frame data, if can carry out error correction then carry out error correction, if could not would need to notify transmitting terminal to retransmit.Transmitting terminal can resend this frame to not beaming back the frame of response in the given time.As can be seen, the error control of data link layer can not be recovered the Frame of losing by coding strategy at receiving terminal, can only carry out mistake to the Frame that receives and judge and error correction, promptly can not resist losing of Frame in data link layer.
In the IP network based on packet switching, the last layer of network layer is a transport layer, transport layer mainly be responsible for guaranteeing data reliably, in proper order, zero defect ground is transferred to destination node from sending node.Transport layer will force to cut apart according to the treatable full-size of network than long packet, for example, Ethernet can't receive the packet greater than 1500 bytes, in such cases, the transport layer of sending node need be divided into the high-rise data of coming of this node the data slice less than 1500 bytes, simultaneously for each data slice is provided with a sequence number, so that during the transport layer of data arrival receiving node, can be with correct order reorganization, this process promptly is called as ordering.
Because the complexity of network environment, especially wide area network might be crossed over very big geographical space and multiple transmission network between transmitting terminal and receiving terminal, adds the generation of situation such as network congestion, is easy to cause losing of packet.For reliably, towards connecting transport layer protocol, as TCP/IP (Transmission ControlProtocol) agreement, solution is after finding after the ordering that the packet of losing is arranged, and the notice transmitting terminal sends once more; For unreliable, non-connection-oriented transport layer protocol such as UDP (User Datagram Protocol) agreement, then there is not retransmission mechanism to guarantee that receiving terminal can receive all packets.
For instance, the picture frame that video capturing device captures forms the binary system original data stream after image encoding, compression, this binary system original data stream is sent to receiving terminal by IP network, because network MTU (MTU, Maximum Transmission Unit) restriction, the size of this binary system original data stream can be far longer than MTU probably, at this moment, the binary system original data stream must be cut apart the formation raw data packets.If the raw data packets after directly will cutting apart is sent to receiving terminal by network, because the complexity and the unsteadiness of network environment, in transmission course, lose certain or certain several raw data packets possibly, if the initial data packet loss is arranged, will cause to restore complete image frame data, at this moment at receiving terminal, receiving terminal or require transmitting terminal to retransmit, or just use the data of mistake to carry out the reduction of picture frame.But,, then can increase the expense of Network Transmission if retransmit all raw data packets of this picture frame; If directly use wrong data to force reduction, the image after will occurring reducing jumps, discontinuous, phenomenon that mosaic occurs.
In sum, though can pass through the error-correcting code technique restore data in the prior art, to the passivity ability of losing of packet.Though can regain the packet of being lost by retransmission mechanism, receiving terminal can't directly carry out the recovery of packet loss.
Summary of the invention
In view of this, one of purpose of the present invention provide a kind of in data transmission procedure the method for opposing packet loss, can solve the technical problem that can not recover continuous packet loss at receiving terminal.
For achieving the above object, technical scheme of the present invention is achieved in that
A kind of method of resisting packet loss in data transmission procedure may further comprise the steps:
A, transmitting terminal are divided into the initial data packet sequence with original data block, the initial data packet sequence is divided into groups, and generate the redundancy packet of each grouping;
B, described grouping and redundancy packet thereof are sent to receiving terminal;
C, receiving terminal are put in order raw data packets, if the initial data packet loss is arranged, then utilize the raw data packets of not losing in the grouping of described raw data packets place and the redundancy packet of this grouping to recover described raw data packets of losing;
D, described raw data packets is reduced.
Based on technique scheme, in the steps A, described redundancy packet is by producing behind all raw data packets step-by-step XORs in its place grouping.
Based on technique scheme, in the steps A, adopt following steps that described initial data packet sequence is divided into groups:
A1, setting need the redundancy packet number N of interpolation;
A2, use the sequence numbering of raw data packets that described redundancy packet number N is got the raw data packets surplus, that the gained remainder is identical successively to be divided into one group.
Based on technique scheme, among the step B, at first send described grouping, and then send described redundancy packet.
Based on technique scheme, among the step C, described arrangement is meant resequences by its numbering to the raw data packets in the described grouping.
Based on technique scheme, among the step C, utilize the described raw data packets of losing of redundancy packet recovery of residue is not lost in the described raw data packets place grouping of losing raw data packets and this grouping.
Based on technique scheme, among the step C, the mode of the raw data packets of not losing by residue in the raw data packets place grouping of losing described and the redundancy packet step-by-step XOR of this grouping is recovered described raw data packets of losing.
Based on technique scheme, among the step C, when the raw data packets of losing in can't be to described grouping is recovered, receiving terminal to transmitting terminal send the semaphore request transmitting terminal resend described raw data packets of losing or described grouping.
Another object of the present invention provides a kind of dispensing device of resisting packet loss in data transmission procedure.For achieving the above object, technical scheme of the present invention is achieved in that
A kind of dispensing device of resisting packet loss in data transmission procedure comprises:
Packet forms module, is used for original data block to be sent is divided into the initial data packet sequence;
The redundancy packet generation module is used for the initial data packet sequence is divided into groups, and generates the redundancy packet of each grouping.
Based on technique scheme, described redundancy packet generation module comprises: be used for grouping module that the initial data packet sequence is divided into groups; Be used to generate the redundant generation module of each redundancy packet of dividing into groups.
Based on technique scheme, described grouping module is meant the grouping module of the initial data packet sequence being got surplus grouping.
Based on technique scheme, described redundant generation module is meant and can carries out the step-by-step XOR to the raw data packets in the described grouping, generates the redundant generation module of described redundancy packet.
Another object of the present invention provides a kind of receiving system of resisting packet loss in data transmission procedure.For achieving the above object, technical scheme of the present invention is achieved in that
A kind of receiving system of resisting packet loss in data transmission procedure comprises:
The packet sorting module is used for the raw data packets of the grouping that receives is resequenced;
Recover recovery module, be used for utilizing redundancy packet to recover raw data packets that described grouping loses and described raw data packets is reduced into original data block.
Based on technique scheme, described recovery recovery module further comprises:
The packet loss judge module is used for judging according to the output result of packet sorting module whether described grouping has the initial data packet loss;
Recover judge module, be used to judge whether to recover the raw data packets of being lost and under irreclaimable situation, trigger retransmission mechanism;
Recover module, be used to recover the raw data packets of being lost;
Recovery module is used for described raw data packets is reverted to original data block.
Another object of the present invention provides a kind of system that resists packet loss in data transmission procedure.For achieving the above object, technical scheme of the present invention is achieved in that
A kind of system that resists packet loss in data transmission procedure comprises transmitting terminal and receiving terminal, and transmitting terminal comprises:
Packet forms module, is used for original data block to be sent is divided into the initial data packet sequence;
The redundancy packet generation module is used for the initial data packet sequence is divided into groups, and generates the redundancy packet of each grouping;
Receiving terminal comprises:
The packet sorting module is used for the raw data packets of the grouping that receives is resequenced;
Recover recovery module, be used for utilizing redundancy packet to recover raw data packets that described grouping loses and described raw data packets is reduced into original data block.
Based on technique scheme, described redundancy packet generation module comprises: be used for grouping module that the initial data packet sequence is divided into groups; Be used to generate each grouping redundancy packet redundant generation module.
Based on technique scheme, described recovery recovery module further comprises:
The packet loss judge module is used for judging according to the output result of packet sorting module whether described grouping has the initial data packet loss;
Recover judge module, be used to judge whether to recover the raw data packets of being lost and under irreclaimable situation, trigger retransmission mechanism;
Recover module, be used to recover the raw data packets of being lost;
Recovery module is used for described raw data packets is reverted to original data block.
Based on technique scheme, described grouping module is meant the grouping module of the initial data packet sequence being got surplus grouping, described redundant generation module is meant and can carries out the step-by-step XOR to the raw data packets in the described grouping, generates the redundant generation module of described redundancy packet.
The method of opposing packet loss provided by the present invention, Apparatus and system have following advantage and characteristics:
1) the present invention makes adjacent data wrap on the space and separates by grouping that raw data packets is interlocked, and under the situation that the network condition burst degenerates, continuous packet loss is had good resistant function;
2) the present invention divides into groups to raw data packets as link layer at the high level of network, does not relate to base layer encodes module and hardware designs, realizes that cost is low;
3) the present invention divides into groups to the big data block of high level, can carry out the recovery of fine granularity to initial data, has reduced under the bad situation of network condition, because the shared bandwidth of data retransmission.
Description of drawings
Fig. 1 a is system framework figure of the present invention;
Fig. 1 b is a transmitting terminal redundancy packet generation module composition diagram of the present invention;
Fig. 1 c recovers the recovery module composition diagram for receiving terminal of the present invention;
Fig. 2 is a process chart of the present invention.
Embodiment
Core concept of the present invention is: raw data packets got surplus staggered grouping, and in each grouping, adds redundancy packet, and when receiving terminal is found packet loss, the packet that can recover to lose by all packets that receive in the respective packets and redundancy packet.So, can resist the packet loss of raw data packets to a great extent.
Be exactly specifically, the big original data block with upper layer application transmits as the entire image data, is divided into the raw data packets of little serial number, and the size of raw data packets is provided with according to MTU.To the grouping that interlocks of initial data packet sequence, and add redundancy packet after the subpackage.At receiving terminal, the raw data packets in the grouping of received raw data packets is resequenced, if find that the initial data packet loss is arranged, then utilize redundancy packet and the raw data packets of not losing is recovered the raw data packets of losing; If there is not the initial data packet loss, then abandon redundancy packet, restore initial data and serve layer application.
Below in conjunction with accompanying drawing the present invention is described in detail.
Fig. 1 a example system framework of the present invention, this system comprises transmitting terminal and receiving terminal two parts, transmitting terminal comprises that further packet forms module and redundancy packet generation module, wherein, packet forms the initial data packet sequence that module is used for the application data block to be sent that upper layer application transmits is decomposed into serial number.The redundancy packet generation module is used for the initial data packet sequence is divided into groups, and generates the redundancy packet of each grouping.。
Receiving terminal further comprises the packet sorting module and recovers recovery module that wherein, the packet sorting module is used for receiving block data, and the raw data packets in all received groupings is resequenced.Recover recovery module and be used for utilizing redundancy packet to recover raw data packets that described grouping loses and described raw data packets is reduced into original data block, send to upper layer application then.
Shown in Fig. 1 b, the redundancy packet generation module is made up of grouping module and redundant generation module, and grouping module is used for the grouping that interlocks of the raw data packets of serial number, adopts in the present invention's one most preferred embodiment to get surplus mode and divide into groups; Redundant generation module is used to generate the redundancy packet of each grouping, adopts the XOR mode to produce the redundancy packet of each grouping in the present invention's one most preferred embodiment.
Shown in Fig. 1 c, recovering recovery module is made up of packet loss judge module, recovery judge module, recovery module, recovery module, the packet loss judge module is used for judging whether the grouping through after the rearrangement arrangement has the initial data packet loss, if the initial data packet loss is arranged, residue raw data packets and redundancy packet send to the recovery judge module in will dividing into groups; If there is not the initial data packet loss, the residue raw data packets directly sends to recovery module in then will dividing into groups.Recover judge module and be used to judge whether to recover the raw data packets of being lost, residue raw data packets and redundancy packet send to the recovery module in if can recover then will divide into groups, if can not recover then directly to the transmitting terminal feedback, require transmitting terminal resend lose the whole group of raw data packets or this raw data packets correspondence.Recover module, redundancy packet and other interior raw data packets of this grouping of being used for dividing into groups by the raw data packets place of losing are recovered the raw data packets of losing.Recovery module is used for raw data packets reconfigured and is reduced into original data block, sends to upper layer application then.
Below in conjunction with Fig. 2 the method for opposing packet loss in data transmission procedure that the present invention proposes is described in detail, this method may further comprise the steps:
Step 1: when transmitting terminal has initial data to send, at first original data block is divided into continuous a plurality of raw data packets, and the raw data packets serial number after will cutting apart.
Here, the size of original data block is determined by upper layer application, promptly constitutes an original data block as video image one frame, for the situation of the continuous output stream of upper layer application, also can set up on their own as required.The size of raw data packets is set according to the transmission quality of MTU in the network and network.
Step 2: transmitting terminal is to the grouping that interlocks of initial data packet sequence, and generates redundancy packet of each grouping;
The mode of staggered grouping can have a variety of, as gets the surplus method of dividision into groups, randomly draws method etc.In the present invention's one most preferred embodiment, adopt and get surplus packet mode, get surplus radix and be provided with according to the packet loss in the network transmission process, if the Network Transmission environment is relatively poor, packet loss is more serious, then it can be provided with more greatly.Suppose to wish to increase N redundancy packet, then utilize the sequence number of raw data packets that raw data packets is carried out N is got surplus grouping, be divided into N group.The all corresponding redundancy packet of each grouping, the generating mode of redundancy packet can have a variety of, adopt the mode of step-by-step XOR to obtain redundancy packet in the present invention's one most preferred embodiment, i.e. the redundancy packet of each grouping is obtained by all raw data packets in this grouping XOR successively.
For example: an original data block can be divided into 12 continuous raw data packets altogether, is respectively P
1, P
2, P
3, P
4, P
5, P
6, P
7, P
8, P
9, P
10, P
11, P
12, according to the transmission-channel interference situation, hope will resist error code intensity to be made as 3, promptly wish increase by 3 redundancy packet, then the sequence number of each bag be got surplusly to 3, obtain the grouping of three raw data packets, be respectively that remainder is 1 raw data packets grouping Z
1=(P
1, P
4, P
7, P
10), remainder is 2 raw data packets grouping Z
2=(P
2, P
5, P
8, P
11), and remainder is 0 raw data packets grouping Z
3=(P
3, P
6, P
9, P
12), so, three redundancy packet X of increase
1, X
2, X
3Corresponding respectively three raw data packets grouping Z
1, Z
2, Z
3, X
1=P
1^P
4^P
7^P
10, X
2=P
2^P
5^P
8^P
11, X
3=P
3^P
6^P
9^P
12, wherein, ^ symbolic representation step-by-step XOR.
Described initial data comprises various types of data, is not restricted to multi-medium data, because the present invention has the ability of the continuous packet loss of good opposing, therefore disclosed technical scheme is applied to any data type and can both obtains good effect.
Step 3: transmitting terminal sends to receiving terminal by transmission channel with original data packet and redundancy packet.
The present invention is the send mode of restricting data not, and a most preferred embodiment is to send with order of packets, as: send Z earlier
1, send Z again
2, send Z again
3, sending redundancy packet at last, like this, can on time and space, initial data be interlocked, reduce the forward-backward correlation of data, thereby obtain the effect of better anti-packet loss.
Step 4: receiving terminal is resequenced to the raw data packets that is comprised in all raw data packets groupings that receive.
Step 5: receiving terminal has judged whether the initial data packet loss, if there is packet loss to take place, then execution in step 6; If there is not packet loss to take place, then execution in step 9.
In a most preferred embodiment, each raw data packets all includes a packet header, includes information such as group character, raw data packets sequence number, grouping overall budget number in the packet header.Owing to initial data has been carried out serial number at transmitting terminal, if receiving terminal is resequenced the back discovery to the raw data packets that receives in the middle of, discontinuous situation is arranged, total number of perhaps finding total number of the raw data packets that transmitting terminal sends and the raw data packets that receiving terminal receives is inconsistent, and then showing has packet to lose in transmission course.
Step 6: can receiving terminal judge the raw data packets that recover to lose, if can recover, then execution in step 8; If cannot recover, then execution in step 7.
In this step, expendable situation is meant: the situation that a raw data packets has been lost two or more bags in dividing into groups simultaneously.In other words, two or more raw data packets have been lost in the grouping of raw data packets simultaneously, or have also lost the redundancy packet of this grouping when having lost one or more raw data packets in raw data packets grouping.
Step 7: trigger other treatment mechanism, as, retransmit etc. to the transmitting terminal feedback information.
The mechanism that retransmits can be at single packet design of losing, and the raw data packets that following needs re-transmission of situation of packet loss lost occurs a grouping like this and gets final product, and has reduced network traffic data greatly.Also can be at whole group, the design of can simplifying procedures like this.
Step 8: receiving terminal utilizes redundancy packet to carry out the recovery of raw data packets, recovers back execution in step 9.
The method of recovering is: with the raw data packets Z that divides into groups
iIn all raw data packets of not losing and the redundancy packet X that belongs to this redundant data packet
iCarry out xor operation.Illustrate, if Z
1=(P
1, P
4, P
7, P
10) in P
4Lose, then the mode of Hui Fuing is P
4=P
1^P
7^P
10^X
1
Step 9: remove redundancy packet, raw data packets is reconfigured be sent to upper layer application after being reduced into original data block, finish current handling process.
The present invention also can have other various embodiments; under the situation that does not deviate from spirit of the present invention and essence thereof; those skilled in the art work as can make various corresponding changes and distortion according to the present invention, but these corresponding changes and distortion all should belong to the protection range of the appended claim of the present invention.
Claims (14)
1, a kind of method of resisting packet loss in data transmission procedure is characterized in that, may further comprise the steps:
A, transmitting terminal are divided into the initial data packet sequence with original data block, redundancy packet number N based on the needs interpolation, use the sequence numbering of raw data packets that described redundancy packet number N is got the raw data packets surplus, that the gained remainder is identical successively and be divided into one group, and generate redundancy packet of each grouping;
B, described grouping and redundancy packet thereof are sent to receiving terminal;
C, receiving terminal are put in order raw data packets, if the initial data packet loss is arranged, then utilize the raw data packets of not losing in the grouping of described raw data packets place and the redundancy packet of this grouping to recover described raw data packets of losing;
D, described raw data packets is reduced.
2, method according to claim 1 is characterized in that, in the steps A, described redundancy packet is by producing behind all raw data packets step-by-step XORs in its place grouping.
3, method according to claim 1 is characterized in that, among the step B, at first sends described grouping, and then sends described redundancy packet.
4, method according to claim 1 is characterized in that, among the step C, described arrangement is meant resequences by its numbering to the raw data packets in the described grouping.
5, according to any described method of claim in the claim 1 to 4, it is characterized in that, among the step C, utilize the described raw data packets of losing of redundancy packet recovery of residue is not lost in the described raw data packets place grouping of losing raw data packets and this grouping.
6, method according to claim 5, it is characterized in that, among the step C, the mode of the raw data packets of not losing by residue in the raw data packets place grouping of losing described and the redundancy packet step-by-step XOR of this grouping is recovered described raw data packets of losing.
7, method according to claim 1, it is characterized in that, among the step C, when the raw data packets of losing in can't be to described grouping was recovered, receiving terminal sent the semaphore request transmitting terminal to transmitting terminal and resends described raw data packets of losing or described grouping.
8, a kind of dispensing device of resisting packet loss in data transmission procedure is characterized in that, comprising:
Packet forms module, is used for original data block to be sent is divided into the initial data packet sequence;
Grouping module is used for the redundancy packet number N that adds based on needs, uses the sequence numbering of raw data packets that described redundancy packet number N is got the raw data packets surplus, that the gained remainder is identical successively and is divided into one group;
Redundant generation module is used to generate the redundancy packet that grouping module output is divided into groups.
9, dispensing device according to claim 8 is characterized in that, described redundant generation module is meant and can carries out the step-by-step XOR to the raw data packets in the described grouping, generates the redundant generation module of described redundancy packet.
10, a kind of receiving system of resisting packet loss in data transmission procedure is characterized in that, comprising:
The packet sorting module, be used for that receiving end/sending end sends through getting grouping and the reception redundancy packet that surplus grouping back produces; And the raw data packets in the grouping that receives resequenced;
Recover recovery module, be used for utilizing redundancy packet to recover raw data packets that described grouping loses and described raw data packets is reduced into original data block.
11, receiving system according to claim 10 is characterized in that, described recovery recovery module further comprises:
The packet loss judge module is used for judging according to the output result of packet sorting module whether described grouping has the initial data packet loss;
Recover judge module, be used to judge whether to recover the raw data packets of being lost and under irreclaimable situation, trigger retransmission mechanism;
Recover module, be used to recover the raw data packets of being lost;
Recovery module is used for described raw data packets is reverted to original data block.
12, a kind of system that resists packet loss in data transmission procedure comprises transmitting terminal and receiving terminal, it is characterized in that transmitting terminal comprises:
Packet forms module, is used for original data block to be sent is divided into the initial data packet sequence;
Grouping module is used for the redundancy packet number N that adds based on needs, uses the sequence numbering of raw data packets that described redundancy packet number N is got the raw data packets surplus, that the gained remainder is identical successively and is divided into one group;
Redundant generation module is used to generate the redundancy packet that grouping module output is divided into groups;
Receiving terminal comprises:
The packet sorting module, be used for that receiving end/sending end sends through getting grouping and the reception redundancy packet that surplus grouping back produces; And the raw data packets in the grouping that receives resequenced;
Recover recovery module, be used for utilizing redundancy packet to recover raw data packets that described grouping loses and described raw data packets is reduced into original data block.
13, system according to claim 12 is characterized in that, described recovery recovery module further comprises:
The packet loss judge module is used for judging according to the output result of packet sorting module whether described grouping has the initial data packet loss;
Recover judge module, be used to judge whether to recover the raw data packets of being lost and under irreclaimable situation, trigger retransmission mechanism;
Recover module, be used to recover the raw data packets of being lost;
Recovery module is used for described raw data packets is reverted to original data block.
14, system according to claim 12 is characterized in that, described redundant generation module is meant and can carries out the step-by-step XOR to the raw data packets in the described grouping, generates the redundant generation module of described redundancy packet.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710152218.9A CN100571217C (en) | 2007-09-19 | 2007-09-19 | A kind of method, R-T unit and system that in data transmission procedure, resists packet loss |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN200710152218.9A CN100571217C (en) | 2007-09-19 | 2007-09-19 | A kind of method, R-T unit and system that in data transmission procedure, resists packet loss |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101119319A CN101119319A (en) | 2008-02-06 |
| CN100571217C true CN100571217C (en) | 2009-12-16 |
Family
ID=39055258
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN200710152218.9A Active CN100571217C (en) | 2007-09-19 | 2007-09-19 | A kind of method, R-T unit and system that in data transmission procedure, resists packet loss |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN100571217C (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105391530A (en) * | 2015-10-16 | 2016-03-09 | 中国人民解放军国防科学技术大学 | Satellite network reliable multicast method based on network coding |
Families Citing this family (42)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101662418B (en) * | 2008-08-26 | 2012-12-12 | 华为技术有限公司 | Detecting method and terminal of file transmission |
| CN101667959B (en) * | 2008-09-05 | 2014-08-20 | 华为技术有限公司 | Method and device for transmitting data in physical layer and data transmission system |
| CN101359981B (en) * | 2008-09-27 | 2011-05-11 | 腾讯科技（深圳）有限公司 | Method, apparatus and system for data packet redundant encoding and decoding |
| CN101552661B (en) * | 2009-03-26 | 2013-01-30 | 吕晓雯 | Method for error control |
| CN101741516B (en) * | 2009-12-29 | 2013-05-08 | 电子科技大学 | Speed-free mode-based frame level encoding and decoding method |
| CN101764677B (en) * | 2009-12-29 | 2013-02-13 | 电子科技大学 | Frame grade encoding and decoding method based on forward error correction |
| CN102420668A (en) * | 2010-09-28 | 2012-04-18 | 国基电子（上海）有限公司 | Modem and method for processing packets by same |
| CN102810314B (en) * | 2011-06-02 | 2014-05-07 | 华为终端有限公司 | Audio encoding method and device, audio decoding method and device, and encoding and decoding system |
| CN102595144A (en) * | 2011-12-27 | 2012-07-18 | 李宗霖 | Repairing method of media stream |
| CN103294726A (en) * | 2012-03-05 | 2013-09-11 | 日电（中国）有限公司 | Method and equipment for processing video file |
| WO2015106444A1 (en) * | 2014-01-17 | 2015-07-23 | 华为技术有限公司 | Transmission method and transmission device for data packet |
| CN104410927A (en) * | 2014-11-27 | 2015-03-11 | 江苏辰汉电子科技有限公司 | Low-redundancy compensation method of video transmission packet loss in erasure channel |
| CN106034011A (en) * | 2015-03-11 | 2016-10-19 | 中国移动通信集团四川有限公司 | Control method and system for multicast transport quality guarantee |
| CN105119967A (en) * | 2015-07-15 | 2015-12-02 | 天脉聚源（北京）教育科技有限公司 | Picture segmentation transmission method and device |
| CN105827367A (en) * | 2016-05-06 | 2016-08-03 | 深圳市国华光电研究院 | Wireless data transmission method and system |
| US20170373982A1 (en) * | 2016-06-24 | 2017-12-28 | Huawei Technologies Co., Ltd. | System and method for mtu size reduction in a packet network |
| CN106162374B (en) * | 2016-06-29 | 2019-04-02 | 成都赛果物联网技术有限公司 | A kind of the intracoded frame robust transmission method and system of low complex degree |
| CN106330414B (en) * | 2016-08-16 | 2021-03-26 | 新华三技术有限公司 | Message transmission method and device |
| CN106656435B (en) * | 2016-11-01 | 2019-06-25 | 深圳职业技术学院 | A kind of data head passes, repeating method |
| CN107104760B (en) * | 2017-04-13 | 2020-09-08 | 腾讯科技（深圳）有限公司 | Method for transmitting data packet, client and server |
| WO2018209658A1 (en) * | 2017-05-18 | 2018-11-22 | 深圳市大疆创新科技有限公司 | Data transmission method and device, machine readable storage medium, and system |
| CN107276722B (en) * | 2017-06-21 | 2020-01-03 | 北京奇艺世纪科技有限公司 | Data transmission method and system based on UDP |
| 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 |
| CN108234080A (en) * | 2018-01-12 | 2018-06-29 | 苏州汇万家数字科技有限公司 | A kind of audio/video transmission method |
| CN108712230A (en) * | 2018-04-08 | 2018-10-26 | 罗建平 | Fault data restorative procedure |
| CN108809517A (en) * | 2018-05-22 | 2018-11-13 | 泰康保险集团股份有限公司 | Information acquisition method and device in a kind of block chain network |
| CN108632565A (en) * | 2018-05-25 | 2018-10-09 | 苏州科达科技股份有限公司 | Transmission method, playback method, device and the conference facility of video code flow |
| CN108847915B (en) * | 2018-05-29 | 2020-11-24 | 北京光润通科技发展有限公司 | Method for realizing unidirectional transmission by reconstructing source end data by applying error correction coding technology |
| CN109041028A (en) * | 2018-08-25 | 2018-12-18 | 咪付（广州）网络科技有限公司 | A kind of data transferring method and system based on bluetooth mesh network |
| CN109714613A (en) * | 2018-11-28 | 2019-05-03 | 视联动力信息技术股份有限公司 | A kind of video data transmitting method and device based on view networking |
| CN111385060B (en) * | 2018-12-28 | 2023-03-28 | 广州市百果园信息技术有限公司 | Data transmission method, device, equipment and storage medium |
| CN110278058B (en) * | 2019-06-05 | 2020-11-03 | 华为技术有限公司 | Redundant information feedback method and communication device |
| CN112714070B (en) * | 2019-10-24 | 2024-01-09 | 北京华为数字技术有限公司 | Communication method, device, system and storage medium |
| CN111181698B (en) * | 2019-10-31 | 2022-12-20 | 腾讯云计算（北京）有限责任公司 | Data processing method, device, equipment and medium |
| CN111312264B (en) * | 2020-02-20 | 2023-04-21 | 腾讯科技（深圳）有限公司 | Voice transmission method, system, device, computer readable storage medium and apparatus |
| CN111385062B (en) * | 2020-03-25 | 2022-05-20 | 京信网络系统股份有限公司 | Data transmission method, device, system and storage medium based on WDM |
| CN112671509B (en) * | 2020-12-18 | 2023-04-28 | 杭州叙简科技股份有限公司 | Data packet anti-lost method and device based on FEC redundancy |
| CN112954405A (en) * | 2021-01-27 | 2021-06-11 | 西安万像电子科技有限公司 | Data packet recovery method, device and system |
| CN113114526B (en) * | 2021-03-12 | 2022-09-30 | 广州技象科技有限公司 | Data transmission method and device based on sub-packet interference prevention |
| CN114422458A (en) * | 2021-12-22 | 2022-04-29 | 北京凯视达信息技术有限公司 | Multi-channel receiving video transmission method and device |
| CN114584847B (en) * | 2022-02-22 | 2023-11-28 | 广州广哈通信股份有限公司 | Data transmission method |
| CN114640867A (en) * | 2022-05-20 | 2022-06-17 | 广州万协通信息技术有限公司 | Video data processing method and device based on video stream authentication |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6081907A (en) * | 1997-06-09 | 2000-06-27 | Microsoft Corporation | Data delivery system and method for delivering data and redundant information over a unidirectional network |
| CN1482779A (en) * | 2002-09-13 | 2004-03-17 | 北京威速科技有限公司 | Forward error correction in internet multimedia realtime communication |
| CN1622504A (en) * | 2003-11-26 | 2005-06-01 | 上海贝尔阿尔卡特股份有限公司 | A data packet recovery method |
| CN1941686A (en) * | 2005-09-30 | 2007-04-04 | 西门子（中国）有限公司 | Data transmitting method and transmitter for radio telecommunication system |
| CN101009663A (en) * | 2007-01-19 | 2007-08-01 | 深圳市深信服电子科技有限公司 | The method for improving the data transfer speed via the redundancy |
-
2007
- 2007-09-19 CN CN200710152218.9A patent/CN100571217C/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6081907A (en) * | 1997-06-09 | 2000-06-27 | Microsoft Corporation | Data delivery system and method for delivering data and redundant information over a unidirectional network |
| CN1482779A (en) * | 2002-09-13 | 2004-03-17 | 北京威速科技有限公司 | Forward error correction in internet multimedia realtime communication |
| CN1622504A (en) * | 2003-11-26 | 2005-06-01 | 上海贝尔阿尔卡特股份有限公司 | A data packet recovery method |
| CN1941686A (en) * | 2005-09-30 | 2007-04-04 | 西门子（中国）有限公司 | Data transmitting method and transmitter for radio telecommunication system |
| CN101009663A (en) * | 2007-01-19 | 2007-08-01 | 深圳市深信服电子科技有限公司 | The method for improving the data transfer speed via the redundancy |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105391530A (en) * | 2015-10-16 | 2016-03-09 | 中国人民解放军国防科学技术大学 | Satellite network reliable multicast method based on network coding |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101119319A (en) | 2008-02-06 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN100571217C (en) | A kind of method, R-T unit and system that in data transmission procedure, resists packet loss | |
| US9258084B2 (en) | Method and implementation for network coefficents selection | |
| US8495474B2 (en) | Method and system for data transmission in a data network | |
| CN101834700A (en) | Unidirectional reliable transmission method and transceiving device based on data packets | |
| CN101826937B (en) | Link layer error control system suitable for next generation mobile Internet and method thereof | |
| Khan et al. | Protocols and mechanisms to recover failed packets in wireless networks: History and evolution | |
| CN102984232A (en) | Real-time streaming media transmission protocol stack in multi-hop network | |
| CN103716134B (en) | The coding method of cumulative fountain codes is spent under feedback condition | |
| CN111935485A (en) | RS code forward error correction method and device | |
| Fong et al. | Low-latency network-adaptive error control for interactive streaming | |
| CN110971345A (en) | Improved FEC algorithm and device thereof | |
| KR101953580B1 (en) | Data Transceiving Apparatus and Method in Telepresence System | |
| WO2017041248A1 (en) | Data processing method, base station and terminal device | |
| WO2022105753A1 (en) | Network data encoding transmission method and apparatus | |
| CN109687934A (en) | Adaptable System code FEC method, apparatus and system based on media content | |
| KR20190099045A (en) | Method and apparatus for correcting low latency errors for retrieving data packets | |
| Mazzotti et al. | Analysis of packet-level forward error correction for video transmission | |
| Qu et al. | Source-adaptive FEC/UEP coding for video transport over bursty packet loss 3G UMTS networks: a cross-layer approach | |
| Pu et al. | Performance analysis of joint Chase combining and network coding in wireless broadcast retransmission | |
| CN109245850A (en) | Adaptable System code FEC coding and decoding method based on media content | |
| KR101999105B1 (en) | Method of reliable data transmission with least video latency for real-time video streaming | |
| Rao et al. | Portal of Research Methods and Methodologies for Research Projects and Degree Projects | |
| Razavi et al. | Delay-aware interleaving and forward-error correction for video over wireless: a bluetooth case study | |
| Casu et al. | Low latency LDGM code for multimedia-packet stream in bursty packet loss networks | |
| Choi et al. | A Novel Design and Analysis of Cross-Layer Error-Control for H. 264 Video over Wireless LAN |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C06 | Publication | ||
| PB01 | Publication | ||
| C10 | Entry into substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant |