[go: up one dir, main page]

CN101119183A - Retransmission control method and transmission device - Google Patents

Retransmission control method and transmission device Download PDF

Info

Publication number
CN101119183A
CN101119183A CN 200710045708 CN200710045708A CN101119183A CN 101119183 A CN101119183 A CN 101119183A CN 200710045708 CN200710045708 CN 200710045708 CN 200710045708 A CN200710045708 A CN 200710045708A CN 101119183 A CN101119183 A CN 101119183A
Authority
CN
China
Prior art keywords
tcp data
tcp
data packet
unit
sending
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.)
Pending
Application number
CN 200710045708
Other languages
Chinese (zh)
Inventor
林青
傅赛香
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Shanghai Huawei Technologies Co Ltd
Original Assignee
Shanghai Huawei Technologies Co Ltd
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Application filed by Shanghai Huawei Technologies Co Ltd filed Critical Shanghai Huawei Technologies Co Ltd
Priority to CN 200710045708 priority Critical patent/CN101119183A/en
Publication of CN101119183A publication Critical patent/CN101119183A/en
Priority to PCT/CN2008/072280 priority patent/WO2009033413A1/en
Pending legal-status Critical Current

Links

Images

Classifications

    • 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
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/188—Time-out mechanisms
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L69/00—Network arrangements, protocols or services independent of the application payload and not provided for in the other groups of this subclass
    • H04L69/16—Implementation or adaptation of Internet protocol [IP], of transmission control protocol [TCP] or of user datagram protocol [UDP]
    • H04L69/163—In-band adaptation of TCP data exchange; In-band control procedures

Landscapes

  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Computer Security & Cryptography (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

本发明涉及通信领域，公开了一种重传控制方法及传输设备。本发明中，接收来自发送端的TCP数据包，将该TCP数据包分割为子数据包，发送给接收端，传输子包的链路中至少部分为无线链路；如果在预估的接收时间到达时，未收到来自接收端的表示收到该TCP数据包的确认信令ACK，且该TCP数据包分割得到的子包已全部向所述接收端发送，则重传该TCP数据包，使得TCP数据包的重传更及时。在无线链路上发送TCP数据包生成的子包后，如果收到来自接收端的表示接收子包失败的信令NAK，则重传该TCP数据包。可以无需采用RTO类似计算，直接根据接收ACK所需时间的历史值，预估本次ACK的接收时间，实现起来十分简单。

Figure 200710045708

The invention relates to the communication field, and discloses a retransmission control method and transmission equipment. In the present invention, the TCP data packet from the sending end is received, the TCP data packet is divided into sub-data packets, and sent to the receiving end, at least part of the link for transmitting the sub-packet is a wireless link; if the estimated receiving time arrives When, the confirmation signaling ACK indicating receipt of the TCP data packet from the receiving end is not received, and the subpackages obtained by dividing the TCP data packet have all been sent to the receiving end, then the TCP data packet is retransmitted, so that the TCP The retransmission of data packets is more timely. After sending the subpacket generated by the TCP data packet on the wireless link, if a signaling NAK indicating failure to receive the subpacket is received from the receiving end, the TCP data packet is retransmitted. It is very simple to estimate the receiving time of this ACK directly based on the historical value of the time required to receive the ACK without using similar calculations of the RTO.

Figure 200710045708

Description

Re-transmission controlling method and transmission equipment
Technical field
The present invention relates to the communications field, particularly retransmission control technique.
Background technology
Transmission control protocol (Transmission Control Protocol is called for short " TCP ") is the most basic a kind of communication protocol that internet and interference networks use.Now become a kind of de facto standards of network service.The main contents of TCP provide the communication mechanism between process and guarantee reliability of data transmission.Reliability comprises the reception of confirming packet (bag), the sequence information of mark packets, the integrality of assurance grouping etc., also comprise control to mistake, processing rule when for example, not receiving situations such as confirming signaling, not arrival in order of grouping, packet loss or wrong throwing or the like.
Because the initial design of TCP only considers that in the wire communication environmental applications, the transmission path error code is very little in cable environment, so packet loss mainly is because network congestion.But for wireless communication system because some characteristics of wireless environment, such as the time channel condition that becomes, asymmetric bandwidth, transmission round-trip delay are big, transmission error code is more high, all may cause packet loss.So therefore packet loss must just can be applied in the wireless environment through the optimization of modification or other necessity at wire link TCP working properly only because this hypothesis of network congestion is invalid under the wireless environment condition.
At present, most of TCP optimization methods all are by increasing a module (or claiming the agency) in the base station (Base Station is called for short " BS "), handling the transmission problem of Radio Link and wire link respectively.As shown in Figure 1.In order to solve the transmission problem of Radio Link better, these optimization methods are not revised under the situation of source TCP code in consideration, some optimizations all on proxy module, have been done, mainly increased the local functions of retransmission fast of BS, avoid realizing retransmitting as far as possible, thereby promote the TCP performance to a certain extent in service end (being the TCP transmitting terminal).
Yet, the present inventor finds, all optimisation techniques all can not be found out packet loss in time at present, not the affirmation signaling (Acknowledgment that need receive repetition, be called for short " ACK "), need wait timeout exactly, just can judge packet loss, retransmit, thereby make that the re-transmission of tcp data bag is not prompt enough.And existing TCP optimisation technique does not solve the essential problem that Radio Link and wire link transmit: packet loss reason detection problem, the i.e. reason of detection wireless side packet loss and how to use it to control transmission how.At present, the reason at the wireless environment packet loss mainly contains congested and error code.Obviously, if error code and packet loss, then the TCP transmitting terminal should retransmit immediately, in order to avoid influence transmission rate; But if because congested and packet loss merely adopts quick retransmission mechanism only to understand aggravate congestion in the BS side so, cause more packet loss, influence the TCP performance greatly.
Summary of the invention
The technical problem underlying that embodiment of the present invention will solve provides a kind of re-transmission controlling method and transmission equipment, makes that the re-transmission of tcp data bag is more timely.
For solving the problems of the technologies described above, embodiments of the present invention provide a kind of re-transmission controlling method, may further comprise the steps:
Reception is from the tcp data bag of transmitting terminal;
The tcp data bag is cut apart, and the child bag after will cutting apart sends to receiving terminal, in the link of transmission son bag to small part be Radio Link;
If when the time of reception estimated arrives, do not receive the affirmation signaling ACK of receiving the tcp data bag from the expression of receiving terminal, and the tcp data bag cuts apart the child bag that obtains and all sends to receiving terminal, then retransmits the tcp data bag.
Embodiments of the present invention also provide a kind of re-transmission controlling method, may further comprise the steps:
Reception is from the tcp data bag of transmitting terminal;
The tcp data bag is cut apart, and the child bag after will cutting apart sends to receiving terminal, in the link of transmission divided data bag to small part be Radio Link;
If receive the signaling NAK that receives the child bag failure after cutting apart from the expression of receiving terminal, then retransmit the tcp data bag.
Embodiments of the present invention also provide a kind of transmission equipment, comprising:
The TCP receiving element is used to receive the tcp data bag from transmitting terminal;
The TCP transmitting element is used to send the tcp data bag that receiving element is received;
Cutting unit is used for the tcp data bag from the TCP transmitting element is divided into the son bag;
The bag transmitting element is used for that the tcp data bag is cut apart the child bag that obtains and sends to receiving terminal, in the link of transmission son bag to small part be Radio Link;
First judging unit is used to judge when the time of reception of estimating arrives, and whether receives the affirmation signaling ACK of representing to receive the tcp data bag;
Second judging unit is used for judging when not receiving ACK at first judging unit, judges that the tcp data bag cuts apart the child bag that obtains and whether all send to receiving terminal, if all send, then indicates TCP transmitting element re-transmission tcp data bag.
Embodiments of the present invention also provide a kind of transmission equipment, comprising:
The TCP receiving element is used to receive the tcp data bag from transmitting terminal;
The TCP transmitting element is used to send the tcp data bag that receiving element is received;
Cutting unit is used for the tcp data bag from the TCP transmitting element is divided into the son bag;
The bag transmitting element is used for that cutting unit is cut apart the child bag that obtains and sends to receiving terminal, in the link of transmission son bag to small part be Radio Link;
First judging unit is used to judge whether to receive that expression receives the signaling NAK of son bag failure, if then indicate the TCP transmitting element to retransmit the tcp data bag.
Embodiment of the present invention compared with prior art, the main distinction and effect thereof are:
By when needs retransmit the tcp data bag, judge that this tcp data bag cuts apart the child bag that obtains and all send to receiving terminal, can determine currently whether congestedly to eat dishes without rice or wine, under the not congested situation of eating dishes without rice or wine, can directly retransmit this tcp data bag, make that the re-transmission of tcp data bag is more timely.
If after sending the son bag, receive the signaling NAK that the expression from receiving terminal takes defeat, then show the former of current packet loss because error code directly retransmits the tcp data bag, make that the re-transmission of tcp data bag is more timely.
Description of drawings
Fig. 1 is the schematic diagram that passes through adaptive wire link of proxy module and Radio Link in the prior art;
Fig. 2 is the mutual schematic diagram according to the proxy module of first embodiment of the invention and RLP processing module;
Fig. 3 is the flow chart according to the re-transmission controlling method of first embodiment of the invention;
Fig. 4 is the flow chart according to the re-transmission controlling method of second embodiment of the invention;
Fig. 5 is the transmission equipment structure chart according to four embodiment of the invention;
Fig. 6 is the transmission equipment structure chart according to fifth embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, embodiments of the present invention are described in further detail below in conjunction with accompanying drawing.
First execution mode of the present invention relates to a kind of method that retransmits control.
In the present embodiment, proxy module, eat dishes without rice or wine to send and the retransmission process module between can communicate by letter, reach more quickly by this mode and to trigger the purpose that retransmits, discerns the packet loss reason more accurately, thereby control wireless transmission better, reducing or to avoid the re-transmission of TCP transmitting terminal and start slowly as far as possible, and then improve the TCP throughput.In order to make proxy module, to eat dishes without rice or wine to communicate by letter more easily between transmission and the retransmission process module, proxy module and eat dishes without rice or wine transmission and retransmission process module can be implemented in together, as shown in Figure 2, proxy module can be arranged on same veneer (as the FMR plate) with eat dishes without rice or wine transmission and retransmission process module, proxy module can be positioned at eats dishes without rice or wine to send and retransmission process module position adjacent, wherein, transmission and the retransmission process module of eating dishes without rice or wine can be radio link protocol (Radio Link Protocol is called for short " RLP ") processing module.Be respectively arranged with buffering in proxy module and the RLP processing module among Fig. 2, wherein the FTx buffering is used for buffer memory packet to be sent, and the RTx buffering is used for up signaling such as ACK and the NAK of buffer memory from receiving terminal.Because the realization position of proxy module is near wireless side, thereby make proxy module not only can resolve the tcp data bag, stress to pass the occupying of the link re-transmission bandwidth of A8 link (as alleviated) but also alleviated the cost of local re-transmission and BS.Need to prove, above-mentioned proxy module, eat dishes without rice or wine to send and the retransmission process module also can not be arranged in the equipment, as being separately positioned in base station and the base station controller,, can realize present embodiment equally as long as can communicate by letter between above-mentioned each module.In addition, above-mentioned each module also can all be arranged in the base station controller.
Flow process to the re-transmission controlling method of present embodiment is specifically described below, as shown in Figure 3.
In step 301, proxy module receives the tcp data bag from transmitting terminal, can carry out buffer memory to the tcp data bag of receiving, can be cached to the FTx buffering among Fig. 2.
In step 302, proxy module sends the tcp data bag of being received to the RLP processing module.The copy that keeps a tcp data bag simultaneously on the proxy module.
In step 303, the RLP processing module is according to Service Data Unit (Service Data Unit, abbreviation " SDU ") size is cut apart to sent the tcp data bag, and the SDU bag that generates is buffered in eats dishes without rice or wine to send buffering area (being the RLP FTx buffering among Fig. 2), send to receiving terminal, in the link of transmission SDU bag to small part be Radio Link.The RLP processing module keeps the sequence number of TCP bag and the corresponding relation of the sequence number (being the RLP sequence number) that SDU wraps.Fixing precedence relationship not between step 303 and the step 304.In addition, the above-mentioned step of cutting apart the tcp data bag also can be undertaken by proxy module, proxy module is directly cut apart the tcp data bag that need send, and generates the SDU bag, and the corresponding relation of the sequence number that the sequence number and the SDU of the SDU bag that generates and TCP bag wrapped sends to the RLP processing module.
In step 304, proxy module is estimated this and is received the time that the expression receiving terminal successfully receives the affirmation signaling ACK of corresponding tcp data bag.For example, can add up each tcp data bag from sending to the used time of ACK of receiving that the TCP receiving terminal returns, receive the required time of ACK behind the tcp data bag and carry out filtering sending for N time before, estimate the time of reception that this receives ACK according to the filtering result.Concrete filtering method can be N mean value from transmission tcp data bag to reception ACK required time before calculating, before perhaps can removing N time from sending the tcp data bag to the maximum and the minimum value of reception ACK the required time, calculate its mean value again, perhaps other easy computational methods.Owing to when estimating time of reception, can need not to adopt the similar calculating of RTO, directly according to the history value that receives the ACK required time, estimate the time of reception of this ACK, implement very simple.Need to prove that this step is an optional step, this ACK time of reception of estimating also can be estimated and obtain and preserve, and in the case, directly enters step 305.
In step 305, when the time of reception estimated arrives, judge whether to receive the ACK of the tcp data bag of corresponding this transmission, if receive to ACK that should the tcp data bag, then enter step 306,, then enter step 307 if do not receive the ACK of the tcp data bag of corresponding this transmission.
In step 306, because proxy module in the time of reception of estimating, is received the ACK of corresponding tcp data bag, the expression receiving terminal has successfully been received the tcp data bag, then can delete the copy of this tcp data bag that keeps on the proxy module.This step is an optional step.
In step 307, because proxy module is in the time of reception of estimating, for receiving the ACK of corresponding tcp data bag, the tcp data bag that proxy module retransmits to the transmission of RLP processing module.
In step 308, the RLP processing module is according to the sequence number of the TCP bag of being preserved and the corresponding relation of the sequence number that SDU wraps, judge that eating dishes without rice or wine to send the SDU bag that whether has this tcp data bag to generate in the buffering area does not send as yet, if the SDU bag that has this tcp data bag to generate does not send as yet, then enter step 309, abandon the tcp data bag of this re-transmission, do not retransmit; If the SDU bag of this tcp data bag generation does not send as yet, then enter step 310.
Specifically, the congested situation if eat dishes without rice or wine, eat dishes without rice or wine to send the SDU bag that may still exist the tcp data bag to generate in the buffering area and do not send as yet, and proxy module may not initiate to retransmit to the RLP processing module because receive the ACK of corresponding tcp data bag to reply in estimating time of reception.This moment, the RLP processing module judged that by the corresponding relation that detects TCP sequence number and SDU sequence number whether the SDU bag that this tcp data bag generates does not send as yet, if the SDU bag that exists this tcp data bag to generate does not send as yet, does not then retransmit this tcp data bag.By before retransmitting the tcp data bag, detect and eat dishes without rice or wine to send the SDU bag that whether has in the buffering area should the tcp data bag and send as yet, can determine whether the actual cause of this tcp data bag packet loss is congested for eating dishes without rice or wine, thereby avoid unnecessary retransmission.As seen,, can more effectively control, so that retransmit fast or rate controlled to wireless transmission by judging the packet loss reason exactly.
In step 310, the tcp data bag that retransmits is divided into the SDU bag, send to receiving terminal.Can insert the front end of eating dishes without rice or wine to send buffering area with cutting apart the SDU bag that obtains, preferentially send these SDU bags, thereby accelerated the re-transmission speed of tcp data bag.
In addition, in the present embodiment, if proxy module is after retransmitting this tcp data bag, received ACK that should the tcp data bag, then send buffering area and detect,, then indicate the RLP processing module to stop to send the SDU that does not send as yet at once and wrap to receiving terminal if send as yet at the SDU bag of eating dishes without rice or wine to send the tcp data bag generation that still has re-transmission in the buffering area to eating dishes without rice or wine, and delete the SDU bag that does not send as yet, thereby saved transfer resource.
If proxy module is received a plurality of ACK to repetition that should the tcp data bag continuously, then sending buffering area to eating dishes without rice or wine detects, send the SDU bag that has the tcp data of re-transmission bag to generate in the buffering area if eat dishes without rice or wine and send as yet, then proxy module is tackled the ACK of the repetition of receiving; The SDU bag that sends the tcp data bag generation that does not have re-transmission in the buffering area if eat dishes without rice or wine sends as yet, and then proxy module passes through the TCP transmitting terminal with the ACK that retransmits, and is retransmitted by the TCP transmitting terminal.
By when the ACK of the repetition of receiving a plurality of corresponding tcp data bags continuously, send buffering area to eating dishes without rice or wine and detect, thereby avoid under the situation that retransmits this tcp data bag, trigger transmitting terminal and initiate unnecessary retransmission.
In addition, for fear of unconfined re-transmission, proxy module reaches at the number of times that retransmits the tcp data bag and is scheduled in limited time in the present embodiment, stops to retransmit this tcp data bag, carries out other processing, and concrete processing mode is same as the prior art.
Second execution mode of the present invention relates to a kind of re-transmission controlling method equally, in the present embodiment, tcp data bag to be sent is generated the SDU bag, send to receiving terminal by Radio Link, if receive the signaling unconfirmed (Not Acknowledgment is called for short " NAK ") that receives corresponding SDU bag from the expression of receiving terminal, and after retransmitting this SDU bag, still receive NAK, then retransmit this tcp data bag.Idiographic flow as shown in Figure 4.
In step 401, proxy module receives the tcp data bag from transmitting terminal, can carry out buffer memory to the tcp data bag of receiving.
In step 402, proxy module sends the tcp data bag of being received to the RLP processing module.The copy that keeps a tcp data bag simultaneously on the proxy module.
In step 403, the RLP processing module is cut apart this tcp data bag according to SDU size, generates the SDU bag, and the SDU bag that generates is buffered in eats dishes without rice or wine to send in the buffering area, sends to receiving terminal, in the link of transmission SDU bag to small part be Radio Link.Need to prove that this step of cutting apart the tcp data bag also can be undertaken by proxy module, proxy module is directly cut apart the tcp data bag that need send, and generates the SDU bag, and the SDU bag that generates is sent to the RLP processing module.
Then, enter step 404, the RLP processing module judges whether to receive from receiving terminal represents the NAK that corresponding SDU bag takes defeat, and after retransmitting this SDU bag, still receive NAK,, then enter step 406 if still receive NAK from receiving terminal, if receive ACK, then enter step 405 from receiving terminal.
Specifically, receive represent signaling NAK that the SDU bag takes defeat from receiving terminal after, the RLP processing module is according to this SDU bag of RLP protocols retransmit, if after retransmitting this SDU bag, still receive the NAK that expression SDU bag takes defeat, then enter step 406,, then enter step 405 if receive ACK from receiving terminal.
In step 405, do not carry out TCP and retransmit.
In step 406, owing to receive the NAK signaling of eating dishes without rice or wine twice, show the former of current packet loss because of error code, RLP processing module request broker module retransmits this tcp data bag.
In step 407, the RLP processing module judges that eating dishes without rice or wine to send other SDU bag that whether exists this tcp data bag to generate in the buffering area does not send as yet, if other SDU bag that exists this tcp data bag to generate does not send as yet, then enter step 408, if there is no other SDU bag of this tcp data bag generation sends as yet, then directly enters step 409.
In step 408, the RLP processing module is deleted the SDU that does not the send bag that this tcp data bag generates.Owing to will retransmit this tcp data bag afterwards, abandon all the other SDU bags that current this tcp data bag that does not send as yet generates, can avoid the SDU bag of this tcp data bag correspondence to be repeated transmission, thereby save transfer resource, meanwhile, also accelerated the speed that retransmits.
In step 409, proxy module retransmits this tcp data bag.That is to say, proxy module resends the processing module to RLP with the copy of the tcp data bag of reservation, generates the SDU bag by the RLP processing module, and this SDU bag can be inserted the front end of eating dishes without rice or wine to send buffering area, preferential this SDU that sends wraps, thereby accelerates the re-transmission speed of tcp data bag.
In the present embodiment, if proxy module is received the ACK of the repetition of a plurality of corresponding tcp data bags continuously, send buffering area to eating dishes without rice or wine so and detect, send as yet if eat dishes without rice or wine to send the SDU bag that has the tcp data of re-transmission bag to generate in the buffering area, then the ACK to the repetition of receiving tackles; The SDU bag that sends the tcp data bag generation that does not have re-transmission in the buffering area if eat dishes without rice or wine sends as yet, and proxy module then passes through the TCP transmitting terminal with the ACK that repeats, and is retransmitted by the TCP transmitting terminal.Thereby avoid under the situation that retransmits this tcp data bag, trigger transmitting terminal and initiate unnecessary retransmission.
Need to prove, in the present embodiment, when the re-transmission of eating dishes without rice or wine is once failed, the re-transmission of beginning tcp data bag, and in actual applications, also can be according to the situation of eating dishes without rice or wine, just pass failure at SDU bag, the time directly carry out the re-transmission of tcp data bag, or retransmitting when repeatedly failing, as three times the failure etc., just carry out the re-transmission of tcp data bag.
In addition, for fear of unconfined re-transmission, in the present embodiment, proxy module can reach at the number of times that retransmits the tcp data bag to be scheduled in limited time, stops to retransmit this tcp data bag, carries out other processing, and concrete processing mode can be same as the prior art.
The 3rd execution mode of the present invention relates to a kind of re-transmission controlling method equally, present embodiment combines first execution mode and second execution mode, in the present embodiment, if receive the NAK that receives the failure of corresponding SDU bag from the expression of receiving terminal, then retransmit this tcp data bag, and, if when the time of reception of estimating arrives, do not receive ACK that should the tcp data bag, and all SDU bags of this tcp data bag correspondence all send, then retransmit this tcp data bag.
Need to prove, each above-mentioned execution mode, be applicable to all wireless systems, comprise CDMA 2000 (Code Division Multiple Access 2000, abbreviation " CDMA2000 ") data-optimized (the Evolution-Data Optimized of 1x evolution, abbreviation " EV-DO "), the wireless system of Wideband Code Division Multiple Access (WCDMA) (Wideband Code Division Multiple Access is called for short " WCDMA ") and other bearer data transmission.As long as proxy module is in the same place with the RLP processing modules implement, promptly belong to the scope of embodiments of the present invention.
The 4th execution mode of the present invention relates to a kind of transmission equipment, as shown in Figure 5, comprises proxy module and RLP processing module.
Wherein, comprise in the proxy module: the TCP receiving element is used to receive the tcp data bag from transmitting terminal; The TCP transmitting element is used for the tcp data bag is sent to the RLP processing module; TCP replys receiving element, is used to receive the affirmation signaling ACK of receiving this tcp data bag from the expression of this receiving terminal; First judging unit is used to judge when the time of reception of estimating arrives, and whether this TCP replys receiving element and receive ACK that should the tcp data bag.
Comprise in the RLP processing module: cutting unit is used for the tcp data bag that proxy module sends is divided into the son bag; The bag transmitting element is used for that this tcp data bag is cut apart the child bag that obtains and sends to receiving terminal, transmit in the link of this child bag to small part be Radio Link; Second judging unit is used for judging when not receiving this ACK at this first judging unit, judges that this tcp data bag cuts apart the child bag that obtains and whether all send to this receiving terminal, if all send, then indicates this TCP transmitting element to retransmit this tcp data bag.Thereby under the situation of getting rid of network congestion, make that the re-transmission of tcp data bag is more timely.
Need to prove that in the present embodiment, the cutting unit and second judge module also can be in proxy modules not necessarily in the RLP processing module.
This transmission equipment can also comprise estimates the unit, is used for receiving the required time of ACK after sending the tcp data bag for N time before, estimates the time of reception of this ACK.Therefore can need not to adopt the similar calculating of RTO, it is very simple to make embodiments of the present invention implement.Since this estimate the unit and after each unit of comprising all are selectable units, no longer embody in the accompanying drawings.
This transmission equipment can also comprise delete cells, is used to delete the tcp data bag and cuts apart the child bag that obtains;
The 3rd judging unit, be used to judge after this time of reception of estimating arrives, whether receive ACK that should the tcp data bag, if receive then judge that tcp data bag that whether this bag transmitting element will retransmit cuts apart the child bag that obtains and all send to this receiving terminal, if all transmissions then this child bag of indicating this delete cells deletion not send, thereby, saved transfer resource effectively.
Whether this transmission equipment can also comprise eats dishes without rice or wine to reply receiving element, be used to receive receive from the expression of receiving terminal and to cut apart replying of back son bag; The 4th judging unit is used to judge whether to receive that expression receives the signaling NAK of this child bag failure, if then indicate this TCP transmitting element to retransmit this tcp data bag.Thereby reach quick re-transmission truly.And the child bag that the tcp data bag that retransmits can be generated is inserted the front end of eating dishes without rice or wine to send buffering area, the preferential transmission, thereby the re-transmission speed of quickening tcp data bag.
Need to prove, in the present embodiment, just pass when failure at the child bag, the re-transmission of beginning tcp data bag, and in actual applications also can be according to the situation of eating dishes without rice or wine, and when retransmitting the one or many failure, as three failures etc., just carries out the re-transmission of tcp data bag.
This transmission equipment can also comprise that TCP replys transmitting element, is used for that TCP is replied the ACK that receiving element receives and sends to transmitting terminal; The 5th judging unit, be used for replying receiving element when receiving ACK to repetition that should the tcp data bag continuously at TCP, the child bag of judging the tcp data bag generation whether this bag transmitting element will retransmit all sends to this receiving terminal, if all transmissions then indicate this TCP to reply the ACK that transmitting element is tackled this repetition, if all transmissions then indicate this TCP to reply the ACK that transmitting element will repeat to pass through this transmitting terminal.Thereby avoid under the situation that retransmits this tcp data bag, trigger transmitting terminal and initiate unnecessary retransmission.
In addition, what deserves to be mentioned is that each unit in the present embodiment is logical block, in actual applications, various physics realization mode can be arranged.And the title of above-mentioned each unit and module is variable, also can be called other title as proxy module and RLP processing module.
The 5th execution mode of the present invention relates to a kind of transmission equipment equally, as shown in Figure 6, comprises proxy module and RLP processing module.
Wherein, comprise in the proxy module: the TCP receiving element is used to receive the tcp data bag from transmitting terminal; The TCP transmitting element is used for the tcp data bag is sent to the RLP processing module.
Comprise in the RLP processing module: cutting unit is used for the tcp data bag that proxy module sends is divided into the son bag; The bag transmitting element is used for that this tcp data bag is cut apart the child bag that obtains and sends to receiving terminal, transmit in the link of this child bag to small part be Radio Link; First judging unit is used to judge whether to receive that expression receives the signaling NAK of this child bag failure, if then indicate this TCP transmitting element to retransmit this tcp data bag, thereby makes that re-transmission is more timely.And the child bag that the tcp data bag that retransmits can be generated is inserted the front end of eating dishes without rice or wine to send buffering area, the preferential transmission, thereby the re-transmission speed of quickening tcp data bag.
Need to prove that in the present embodiment, cutting unit also can be in proxy module not necessarily in the RLP processing module.
In addition, what deserves to be mentioned is, in the present embodiment, when the child bag just passes failure, the re-transmission of beginning tcp data bag, and in actual applications, also can be according to the situation of eating dishes without rice or wine, when retransmitting the one or many failure,, just carry out the re-transmission of tcp data bag as three failures etc.
This transmission equipment can also comprise delete cells, is used to delete the tcp data bag and cuts apart the child bag that obtains; Second judging unit, be used for when this first judging unit indicates this TCP transmitting element to retransmit this tcp data bag, judge whether this bag transmitting element has been finished whole sons of this tcp data bag correspondence and wrapped once transmission, do not wrap transmission once then indicate this delete cells to delete the child bag that this does not send if finish these whole sons.Thereby, saved transfer resource.Because this delete cells and second judging unit all are selectable units, no longer embody in the accompanying drawings.
Each unit in the present embodiment is logical block, in actual applications, various physics realization mode can be arranged.And the title of above-mentioned each unit and module is variable, also can be called other title as proxy module and RLP processing module.
In sum, in embodiments of the present invention,, do not receive that the expression tcp data bag of receiving terminal receives successful signaling ACK, then prepare to retransmit the tcp data bag, make that the re-transmission of tcp data bag is more timely if when the time of reception of estimating arrives.When needs retransmit the tcp data bag, judge that further the child bag that this tcp data bag generates all sends to receiving terminal, by this judgement can determine current eat dishes without rice or wine whether congested, under the not congested situation of eating dishes without rice or wine, can directly retransmit this tcp data bag, congested then refusal retransmits if eat dishes without rice or wine, thereby avoids the emphasis network congestion situation.
After sending the child bag of tcp data bag generation on the Radio Link, wrap the signaling NAK that takes defeat if receive expression from receiving terminal, then show the former of current packet loss because error code retransmits this tcp data bag, make that the re-transmission of tcp data bag is more timely.
Can need not to adopt the similar calculating of RTO,, estimate the time of reception of this ACK, implement very simple directly according to the history value that receives the ACK required time.
If after the time of reception of estimating arrives, receive ACK that should the tcp data bag, then detect and eat dishes without rice or wine to send the sub-Bao Shangwei that whether has in the buffering area the tcp data bag that should retransmit and send, if having then delete this a little bag that does not send, the saving transfer resource.
The child bag that the tcp data bag that retransmits generates is inserted the front end of eating dishes without rice or wine to send buffering area, the preferential transmission, thereby the re-transmission speed of quickening tcp data bag.
When the ACK that receives continuously repetition that should the tcp data bag, detect and eat dishes without rice or wine to send the sub-Bao Shangwei that whether has the tcp data of this re-transmission bag to generate in the buffering area and send, if having then tackle the ACK that repeats, if do not have then the ACK of repetition is passed through transmitting terminal.Thereby avoid under the situation that retransmits this tcp data bag, trigger transmitting terminal and initiate unnecessary retransmission.
Though pass through with reference to some of the preferred embodiment of the invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that and can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.

Claims (17)

1.一种重传控制方法，其特征在于，包括以下步骤：1. A retransmission control method, characterized in that, comprising the following steps: 接收来自发送端的TCP数据包；Receive TCP packets from the sender; 对所述TCP数据包进行分割，将分割后的子包向接收端发送，传输所述子包的链路中至少部分为无线链路；Segmenting the TCP data packet, sending the segmented sub-package to the receiving end, at least part of the link for transmitting the sub-packet is a wireless link; 如果在预估的接收时间到达时，未收到来自所述接收端的表示收到所述TCP数据包的确认信令ACK，且所述TCP数据包分割得到的子包已全部向所述接收端发送，则重传所述TCP数据包。If when the estimated receiving time arrives, the acknowledgment signaling ACK indicating receipt of the TCP data packet is not received from the receiving end, and all the subpackages obtained by dividing the TCP data packet have been sent to the receiving end If sent, retransmit the TCP data packet. 2.根据权利要求1所述的重传控制方法，其特征在于，还包括以下步骤：2. The retransmission control method according to claim 1, further comprising the following steps: 所述ACK的接收时间是根据之前N次发送TCP数据包后接收ACK所需的时间得到的。The receiving time of the ACK is obtained according to the time required for receiving the ACK after sending the TCP data packets N times before. 3.根据权利要求1所述的重传控制方法，其特征在于，还包括以下步骤：3. The retransmission control method according to claim 1, further comprising the following steps: 如果在所述重传TCP数据包的步骤之后，收到对应所述TCP数据包的ACK，则检测所述重传的TCP数据包分割得到的子包是否已全部向所述接收端发送，如果未全部发送则删除未发送的所述子包。If after the step of retransmitting the TCP data packet, an ACK corresponding to the TCP data packet is received, then detecting whether the subpackages obtained by segmenting the retransmitted TCP data packet have all been sent to the receiving end, if If not all are sent, the unsent subpackages are deleted. 4.根据权利要求1所述的重传控制方法，其特征在于，所述将分割后的子包向接收端发送的步骤之后，还包括以下步骤：4. The retransmission control method according to claim 1, characterized in that, after the step of sending the divided subpackages to the receiving end, further comprising the following steps: 如果收到来自所述接收端的表示接收所述分割后的子包失败的信令NAK，则重传所述TCP数据包。If receiving a signaling NAK from the receiving end indicating failure to receive the segmented subpacket, retransmit the TCP data packet. 5.根据权利要求1至4中任一项所述的重传控制方法，其特征在于，所述重传TCP数据包的步骤中，包括以下子步骤：5. according to the retransmission control method described in any one of claims 1 to 4, it is characterized in that, in the step of described retransmission TCP data packet, comprise the following substeps: 将重传的所述TCP数据包分割得到的子包置入空口发送缓冲区的前端，优先发送所述子包。Put the sub-packets obtained by dividing the retransmitted TCP data packet into the front end of the air interface sending buffer, and send the sub-packets with priority. 6.根据权利要求1至4中任一项所述的重传控制方法，其特征在于，所述重传TCP数据包的步骤之后，还包括以下步骤：6. according to the retransmission control method according to any one of claims 1 to 4, it is characterized in that, after the step of described retransmission TCP data packet, also comprise the following steps: 在连续收到对应所述TCP数据包的重复的ACK时，检测所述重传的TCP数据包分割得到的子包是否已全部向接收端发送，如果未全部发送则拦截所述重复的ACK，如果已全部发送则将所述重复的ACK透传给发送端。When continuously receiving repeated ACKs corresponding to the TCP data packets, detect whether the subpackages obtained by segmenting the retransmitted TCP data packets have all been sent to the receiving end, if not all sent, then intercept the repeated ACKs, If all have been sent, the repeated ACK is transparently transmitted to the sending end. 7.一种重传控制方法，其特征在于，包括以下步骤：7. A retransmission control method, characterized in that, comprising the following steps: 接收来自发送端的TCP数据包；Receive TCP packets from the sender; 对所述TCP数据包进行分割，将分割后的子包向接收端发送，传输所述分割后的数据包的链路中至少部分为无线链路；Segmenting the TCP data packet, sending the segmented sub-packet to the receiving end, and at least part of the link for transmitting the segmented data packet is a wireless link; 如果收到来自所述接收端的表示接收所述分割后的子包失败的信令NAK，则重传所述TCP数据包。If receiving a signaling NAK from the receiving end indicating failure to receive the segmented subpacket, retransmit the TCP data packet. 8.根据权利要求7所述的重传控制方法，其特征在于，所述重传TCP数据包的步骤之前，还包括以下步骤：8. The retransmission control method according to claim 7, characterized in that, before the step of retransmitting TCP packets, the following steps are also included: 如果上一次发送所述TCP数据包时分割得到的子包尚未全部发送，则删除所述未发送的子包。If the subpackages obtained when the TCP data packet was sent last time have not all been sent, the unsent subpackages are deleted. 9.根据权利要求7所述的重传控制方法，其特征在于，所述重传TCP数据包的步骤中，包括以下子步骤：9. The retransmission control method according to claim 7, wherein, in the step of retransmitting TCP packets, the following substeps are included: 将所述TCP数据包分割得到的子包置入空口发送缓冲区的前端，优先发送所述子包。Put the sub-packets obtained by dividing the TCP data packet into the front end of the air interface sending buffer, and send the sub-packets with priority. 10.根据权利要求7至9中任一项所述的重传控制方法，其特征在于，还包括以下步骤：10. The retransmission control method according to any one of claims 7 to 9, further comprising the following steps: 在连续收到对应所述TCP数据包的重复的ACK时，检测所述重传的TCP数据包分割得到的子包是否已全部向接收端发送，如果未全部发送则拦截所述重复的ACK，如果已全部发送则将所述重复的ACK透传给发送端。When continuously receiving repeated ACKs corresponding to the TCP data packets, detect whether the subpackages obtained by segmenting the retransmitted TCP data packets have all been sent to the receiving end, if not all sent, then intercept the repeated ACKs, If all have been sent, the repeated ACK is transparently transmitted to the sending end. 11.一种传输设备，其特征在于，包括：11. A transmission device, characterized in that it comprises: TCP接收单元，用于接收来自发送端的TCP数据包；The TCP receiving unit is used to receive the TCP data packet from the sending end; TCP发送单元，用于发送所述接收单元收到的TCP数据包；a TCP sending unit, configured to send the TCP data packet received by the receiving unit; 分割单元，用于将来自TCP发送单元的所述TCP数据包分割成子包；A segmenting unit, configured to segment the TCP data packet from the TCP sending unit into sub-packets; 包发送单元，用于将所述TCP数据包分割得到的子包发送给接收端，传输所述子包的链路中至少部分为无线链路；A packet sending unit, configured to send the subpackages obtained by dividing the TCP data packet to the receiving end, and at least part of the links for transmitting the subpackets are wireless links; 第一判断单元，用于判断在预估的接收时间到达时，是否收到表示收到所述TCP数据包的确认信令ACK；The first judging unit is used to judge whether the acknowledgment signaling ACK indicating receipt of the TCP data packet is received when the estimated receiving time arrives; 第二判断单元，用于在所述第一判断单元判定未收到所述ACK时，判断所述TCP数据包分割得到的子包是否已全部向所述接收端发送，如果已全部发送，则指示所述TCP发送单元重传所述TCP数据包。The second judging unit is used to judge whether the subpackets obtained by dividing the TCP data packet have all been sent to the receiving end when the first judging unit judges that the ACK has not been received, and if all have been sent, then instructing the TCP sending unit to retransmit the TCP data packet. 12.根据权利要求11所述的传输设备，其特征在于，还包括：12. The transmission device according to claim 11, further comprising: 预估单元，用于根据之前N次发送TCP数据包后接收ACK所需的时间，预估本次ACK的接收时间。The estimating unit is configured to estimate the receiving time of this ACK according to the time required for receiving the ACK after sending the TCP data packets for the previous N times. 13.根据权利要求11所述的传输设备，其特征在于，还包括：13. The transmission device according to claim 11, further comprising: 删除单元，用于删除TCP数据包分割得到的子包；The deletion unit is used to delete subpackages obtained by segmenting the TCP data packet; 第三判断单元，用于判断在所述预估的接收时间到达之后，是否收到对应所述TCP数据包的ACK，如果收到则判断所述包发送单元是否已将所述重传的TCP数据包分割得到的子包全部向所述接收端发送，如果未全部发送则指示所述删除单元删除未发送的所述子包。The third judging unit is used to judge whether the ACK corresponding to the TCP data packet is received after the estimated receiving time arrives, and if so, judge whether the packet sending unit has sent the retransmitted TCP All the sub-packets obtained by dividing the data packet are sent to the receiving end, and if not all are sent, the deleting unit is instructed to delete the unsent sub-packets. 14.根据权利要求11所述的传输设备，其特征在于，还包括：14. The transmission device according to claim 11, further comprising: 第四判断单元，用于判断是否收到表示接收所述子包失败的信令NAK，如果是则指示所述TCP发送单元重传所述TCP数据包。A fourth judging unit, configured to judge whether a signaling NAK indicating failure to receive the subpacket is received, and if so, instruct the TCP sending unit to retransmit the TCP data packet. 15.根据权利要求11至14中任一项所述的传输设备，其特征在于，还包括：15. The transmission device according to any one of claims 11 to 14, further comprising: TCP应答发送单元，用于将来自接收端的ACK发送给发送端；The TCP response sending unit is used to send the ACK from the receiving end to the sending end; 第五判断单元，用于在连续收到对应所述TCP数据包的重复的ACK时，判断所述包发送单元是否已将所述重传的TCP数据包分割得到的子包全部向所述接收端发送，如果未全部发送则指示所述TCP应答发送单元拦截所述重复的ACK，如果已全部发送则指示所述TCP应答发送单元将所述重复的ACK透传给所述发送端。The fifth judging unit is configured to judge whether the packet sending unit has sent all the subpackets obtained by dividing the retransmitted TCP data packet to the receiving unit when repeated ACKs corresponding to the TCP data packets are continuously received. If not all sent, instruct the TCP response sending unit to intercept the repeated ACK, if all sent, instruct the TCP response sending unit to transparently transmit the repeated ACK to the sending end. 16.一种传输设备，其特征在于，包括：16. A transmission device, characterized in that it comprises: TCP接收单元，用于接收来自发送端的TCP数据包；The TCP receiving unit is used to receive the TCP data packet from the sending end; TCP发送单元，用于发送所述接收单元收到的TCP数据包；a TCP sending unit, configured to send the TCP data packet received by the receiving unit; 分割单元，用于将来自TCP发送单元的所述TCP数据包分割为子包；A segmenting unit, configured to segment the TCP data packet from the TCP sending unit into sub-packets; 包发送单元，用于将所述分割单元分割得到的子包发送给所述接收端，传输所述子包的链路中至少部分为无线链路；A packet sending unit, configured to send the subpackages obtained by the segmentation unit to the receiving end, and at least part of the links for transmitting the subpackets are wireless links; 第一判断单元，用于判断是否收到表示接收所述子包失败的信令NAK，如果是则指示所述TCP发送单元重传所述TCP数据包。The first judging unit is configured to judge whether a signaling NAK indicating failure to receive the subpacket is received, and if so, instruct the TCP sending unit to retransmit the TCP data packet. 17.根据权利要求16所述的传输设备，其特征在于，还包括：17. The transmission device according to claim 16, further comprising: 删除单元，用于删除TCP数据包分割得到的子包；The deletion unit is used to delete subpackages obtained by segmenting the TCP data packet; 第二判断单元，用于在所述第一判断单元指示所述TCP发送单元重传所述TCP数据包时，判断所述包发送单元是否已完成所述TCP数据包对应的全部子包上一次的发送，如果未完成所述全部子包上一次的发送则指示所述删除单元删除所述未发送的子包。The second judging unit is configured to judge whether the packet sending unit has completed all subpackets corresponding to the TCP data packet last time when the first judging unit instructs the TCP sending unit to retransmit the TCP data packet If the last sending of all subpackages has not been completed, instruct the deleting unit to delete the unsent subpackages.
CN 200710045708 2007-09-06 2007-09-06 Retransmission control method and transmission device Pending CN101119183A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN 200710045708 CN101119183A (en) 2007-09-06 2007-09-06 Retransmission control method and transmission device
PCT/CN2008/072280 WO2009033413A1 (en) 2007-09-06 2008-09-05 A method and transmission device for controlling retransmission

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN 200710045708 CN101119183A (en) 2007-09-06 2007-09-06 Retransmission control method and transmission device

Publications (1)

Publication Number Publication Date
CN101119183A true CN101119183A (en) 2008-02-06

Family

ID=39055139

Family Applications (1)

Application Number Title Priority Date Filing Date
CN 200710045708 Pending CN101119183A (en) 2007-09-06 2007-09-06 Retransmission control method and transmission device

Country Status (2)

Country Link
CN (1) CN101119183A (en)
WO (1) WO2009033413A1 (en)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009033413A1 (en) * 2007-09-06 2009-03-19 Shanghai Huawei Technologies Co., Ltd. A method and transmission device for controlling retransmission
CN102664718A (en) * 2012-04-28 2012-09-12 大唐移动通信设备有限公司 Wireless side TCP (Transmission Control Protocol) data retransmission method and equipment
CN103107870A (en) * 2011-11-11 2013-05-15 智邦科技股份有限公司 Wireless network device and automatic parameter setting method thereof
WO2013107408A1 (en) * 2012-01-20 2013-07-25 华为技术有限公司 Data transmission method and device
CN103607264A (en) * 2013-10-17 2014-02-26 兴唐通信科技有限公司 3G network-based in-band data transmission method
CN103716136A (en) * 2013-12-23 2014-04-09 上海网达软件股份有限公司 Data transmission method and system
CN104243107A (en) * 2013-06-06 2014-12-24 深圳市腾讯计算机系统有限公司 Data transmission method, device, terminal, server and system
CN102007812B (en) * 2008-02-12 2015-11-25 恩维蒂亚公司 The method and apparatus that TCP flow controls
WO2017193262A1 (en) * 2016-05-09 2017-11-16 Qualcomm Incorporated Handling packet acknowledgments during tune-aways on mobile devices
CN107659558A (en) * 2017-08-22 2018-02-02 上海华为技术有限公司 A kind of data transmission method and base station
CN108777607A (en) * 2018-04-23 2018-11-09 上海华为技术有限公司 It is a kind of to intercept the method and access network equipment for confirming packet
CN110114996A (en) * 2016-10-28 2019-08-09 瑞典爱立信有限公司 The specific conveying length of receiver
CN110677221A (en) * 2018-07-02 2020-01-10 华为技术有限公司 Retransmission control method, communication interface and electronic equipment
CN111181700A (en) * 2020-01-07 2020-05-19 广州华多网络科技有限公司 Data transmission method and device, electronic equipment and storage medium
CN111641480A (en) * 2020-05-22 2020-09-08 广东小天才科技有限公司 TCP retransmission frequency control method, terminal equipment and storage medium
CN112134832A (en) * 2019-11-01 2020-12-25 北京天德科技有限公司 TCP wireless retransmission
CN112398591A (en) * 2019-08-16 2021-02-23 华为技术有限公司 Method, device and system for determining side link resources
CN115085890A (en) * 2022-06-23 2022-09-20 杭州云合智网技术有限公司 Method for optimizing TCP RTO retransmission waiting time by data center network chip

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102316491B (en) * 2010-07-01 2014-08-13 中国电信股份有限公司 Method for adjusting media code rate by utilizing mobile terminal and mobile terminal
WO2017214976A1 (en) 2016-06-17 2017-12-21 广东欧珀移动通信有限公司 Method and device for data transmission
CN116074401B (en) * 2023-04-06 2023-07-18 合肥综合性国家科学中心人工智能研究院(安徽省人工智能实验室) Method for realizing transmission layer protocol on programmable exchanger

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5570367A (en) * 1994-07-29 1996-10-29 Lucent Technologies Inc. Asymmetric protocol for wireless communications
US6629285B1 (en) * 2000-01-04 2003-09-30 Nokia Corporation Data transmission
KR100684307B1 (en) * 2003-12-29 2007-02-16 한국전자통신연구원 A method for receiving an automatic retransmission request block and a recording medium storing the program
CN101009537A (en) * 2006-01-26 2007-08-01 华为技术有限公司 A data retransfer method and system
CN101119183A (en) * 2007-09-06 2008-02-06 上海华为技术有限公司 Retransmission control method and transmission device

Cited By (28)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2009033413A1 (en) * 2007-09-06 2009-03-19 Shanghai Huawei Technologies Co., Ltd. A method and transmission device for controlling retransmission
CN102007812B (en) * 2008-02-12 2015-11-25 恩维蒂亚公司 The method and apparatus that TCP flow controls
CN103107870A (en) * 2011-11-11 2013-05-15 智邦科技股份有限公司 Wireless network device and automatic parameter setting method thereof
CN103107870B (en) * 2011-11-11 2016-08-10 智邦科技股份有限公司 Wireless network device and automatic parameter setting method thereof
WO2013107408A1 (en) * 2012-01-20 2013-07-25 华为技术有限公司 Data transmission method and device
CN102664718A (en) * 2012-04-28 2012-09-12 大唐移动通信设备有限公司 Wireless side TCP (Transmission Control Protocol) data retransmission method and equipment
CN102664718B (en) * 2012-04-28 2015-09-09 大唐移动通信设备有限公司 The method and apparatus that wireless side tcp data retransmits
CN104243107A (en) * 2013-06-06 2014-12-24 深圳市腾讯计算机系统有限公司 Data transmission method, device, terminal, server and system
CN103607264A (en) * 2013-10-17 2014-02-26 兴唐通信科技有限公司 3G network-based in-band data transmission method
CN103607264B (en) * 2013-10-17 2016-08-17 兴唐通信科技有限公司 Data transmission method in band based on 3G network
CN103716136A (en) * 2013-12-23 2014-04-09 上海网达软件股份有限公司 Data transmission method and system
CN103716136B (en) * 2013-12-23 2017-08-29 上海网达软件股份有限公司 A kind of data transferring method and system
WO2017193262A1 (en) * 2016-05-09 2017-11-16 Qualcomm Incorporated Handling packet acknowledgments during tune-aways on mobile devices
CN110114996B (en) * 2016-10-28 2022-03-29 瑞典爱立信有限公司 Receiver specific transmission length
CN110114996A (en) * 2016-10-28 2019-08-09 瑞典爱立信有限公司 The specific conveying length of receiver
CN107659558A (en) * 2017-08-22 2018-02-02 上海华为技术有限公司 A kind of data transmission method and base station
CN108777607A (en) * 2018-04-23 2018-11-09 上海华为技术有限公司 It is a kind of to intercept the method and access network equipment for confirming packet
CN108777607B (en) * 2018-04-23 2021-08-31 上海华为技术有限公司 Method for intercepting acknowledgement packet and access network equipment
CN110677221A (en) * 2018-07-02 2020-01-10 华为技术有限公司 Retransmission control method, communication interface and electronic equipment
US11671210B2 (en) 2018-07-02 2023-06-06 Huawei Technologies Co., Ltd. Retransmission control method, communications interface, and electronic device
CN112398591A (en) * 2019-08-16 2021-02-23 华为技术有限公司 Method, device and system for determining side link resources
WO2021032064A1 (en) * 2019-08-16 2021-02-25 华为技术有限公司 Method, device and system for determining sidelink resource
CN112398591B (en) * 2019-08-16 2022-06-10 华为技术有限公司 Method, device and system for determining side link resources
CN112134832A (en) * 2019-11-01 2020-12-25 北京天德科技有限公司 TCP wireless retransmission
CN111181700A (en) * 2020-01-07 2020-05-19 广州华多网络科技有限公司 Data transmission method and device, electronic equipment and storage medium
CN111641480A (en) * 2020-05-22 2020-09-08 广东小天才科技有限公司 TCP retransmission frequency control method, terminal equipment and storage medium
CN111641480B (en) * 2020-05-22 2023-08-25 广东小天才科技有限公司 Control method for TCP retransmission times, terminal equipment and storage medium
CN115085890A (en) * 2022-06-23 2022-09-20 杭州云合智网技术有限公司 Method for optimizing TCP RTO retransmission waiting time by data center network chip

Also Published As

Publication number Publication date
WO2009033413A1 (en) 2009-03-19

Similar Documents

Publication Publication Date Title
CN101119183A (en) Retransmission control method and transmission device
CN101114999B (en) Data transmission control method and data transmission device
JP6419245B2 (en) Method and apparatus in communication system
US7181667B2 (en) Method and apparatus for modulating radio link control (RLC) ACK/NAK persistence to improve performance of data traffic
JP5587406B2 (en) Method and apparatus for high-speed retransmission in radio link control layer confirmation mode
EP2109954B1 (en) Ack prioritization in wireless networks
JP4981904B2 (en) Media access control discard notification
JP4654926B2 (en) COMMUNICATION SYSTEM, COMMUNICATION DEVICE, AND CONgestion Control Method Used In Them
CN101189840B (en) Data unit relay device and method of controlling the data unit relay device
WO2007007383A1 (en) Transmitting apparatus, receiving apparatus and information communication method
EP1876747A1 (en) Method and apparatus for handling transmission errors in a wireless communications system
CN1226844C (en) An Adaptive Congestion Control Method for Wired/Wireless Hybrid Networks
WO2008044653A1 (en) Communication system, communication device, and communication method
JP2011515032A (en) Method and apparatus for TCP flow control
CN106330412A (en) Method and device for sending RLC PDU using HARQ ACK/NACK
US20130070581A1 (en) Controlling Data Transmission
CN1628434A (en) Method for transmitting data packets in a radio-communication system
JP2005244897A (en) Reliable communication method and apparatus
CN102201901A (en) Data retransmission method and device
Maisuria et al. Overview of techniques for improving QoS of TCP over wireless links
US10009409B2 (en) Retransmission control network node and related method
JP2003224547A (en) Method for controlling flow
KR100913897B1 (en) Transmission Control Protocol Congestion Control Method to Reduce the Number of Retransmission Timeouts
CN101997641B (en) Method and system for improving packet transmission speed
CN115766747A (en) Reliable and efficient transmission method suitable for wireless channel

Legal Events

Date Code Title Description
C06 Publication
PB01 Publication
C10 Entry into substantive examination
SE01 Entry into force of request for substantive examination
C02 Deemed withdrawal of patent application after publication (patent law 2001)
WD01 Invention patent application deemed withdrawn after publication

Open date: 20080206