CN101488841A - Frame retransmission method and apparatus for radio link protocol - Google Patents
Frame retransmission method and apparatus for radio link protocol Download PDFInfo
- Publication number
- CN101488841A CN101488841A CNA2009101055068A CN200910105506A CN101488841A CN 101488841 A CN101488841 A CN 101488841A CN A2009101055068 A CNA2009101055068 A CN A2009101055068A CN 200910105506 A CN200910105506 A CN 200910105506A CN 101488841 A CN101488841 A CN 101488841A
- Authority
- CN
- China
- Prior art keywords
- frame
- sequence number
- receives
- rlp
- expectation
- 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.)
- Granted
Links
Images
Landscapes
- Communication Control (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
Abstract
The invention relates to a wireless link protocol RLP frame retransmission method and apparatus, the method comprises following steps: a RLP layer preserves a lost frame sequence number in a time delay caching area, when the received frame sequence number L_SEQ is smaller than the expecting received lower frame sequence number, if no sequence number same as the L_SEQ is in the time delay caching area, so that the received frame in the present is discarded, the sequence number of the lost frame is calculated, and the corresponding sequence number can be preserved in the time delay caching area, meanwhile, the lost frame sequence number before the presetting value is inserted into a negative response NAK list, when the transmitting time is coming, the NAK is transmitted to the opposite terminal RLP layer, the lost frame is required for transmitting; the apparatus comprises a received module, a control module, a time delay caching module, a reordering caching module, an NAK list module and a transmitting module. The invention improves the compatibility of the RLP layer for various application scenes, can ensure that the RLP layer retransmission rate is low and the transmission rate of the RLP layer is constant under the condition of large shake.
Description
Technical field
The present invention relates to field of wireless data communication, relate to code division multiple access (CodeDivision Multiple Access, CDMA) a kind of radio link protocol (Radio Link Protocol, RLP) frame retransmission method and device in the communication system especially.
Background technology
Wireless communication system becomes one of most popular means of communication of people gradually.These systems can support a plurality of users and the multi-address system of communicating by letter that the polytype service is provided, comprise based on frequency division multiple access (Frequency Division Multiple Access, FDMA), time division multiple access (Time Division Multiple Access, TDMA), CDMA or other multiple access technology.Cdma system relies on characteristics such as its high power capacity, efficient, cheapness to cause user's concern.
Because wireless environment is subjected to ectocine bigger, aloft the frame error rate of Frame in the transmission course (Frame Error Rate, FER) higher relatively.Therefore need to introduce the reliability that a quasi-protocol guarantees the transmission of wireless system bottom.Cdma system is to guarantee reliability of data transmission by the RLP retransmission mechanism when Packet data service is provided.RLP is used in link layer protocol for the error correction Network Based of guaranteeing to stablize transfer of data by GSM (Globe System for Mobil Communication, global system for mobile communications) and CDMA.Transfer of data is behind the RLP layer, and the RLP layer can produce the continuous and unique rlp frame of sequence number.When rlp frame was lost in transmission course or made mistakes, receiving terminal RLP layer can require transmitting terminal RLP layer to resend the Frame of losing or makeing mistakes by replying NAK (Negative Acknowlegment, negative response).Transmitting terminal RLP layer can resend corresponding rlp frame after receiving NAK.Continuous a plurality of rlp frames composition packets that while receiving terminal RLP layer will be received send to a protocol layer and handle.
Under the normal condition, said method has well solved the problem of stability of data transmission in the wireless system.But under the bigger condition of shakes such as satellite link transmission, Ethernet transmission, wrong frame, out of order situation can appear, no matter be wrong frame or out of orderly receiving terminal RLP layer received than expectation receive frame that frame number is little or the big frame of receiving than expectation of next frame sequence number in proper order, if according to original RLP retransmission mechanism, will send NAK to the opposite end, retransmission rate can occur this moment and raise, the RLP number of resets increases, degradation problem under the transmission rate.Finally have influence on the normal use of user to the data business.
Therefore introducing the stronger RLP retransmission mechanism of a kind of compatibility and stability has very important significance to the promotion and application tool of wireless system data service.
Summary of the invention
Technical problem to be solved by this invention is to provide a kind of RLP repeating method and device, to overcome the problem that RLP retransmission rate height, the increase of RLP number of resets, transmission rate descend under the bigger environment of shake that exists in the prior art.
Rlp frame repeating method of the present invention, receiving terminal RLP layer is kept at the sequence number of lost frames in the time-delay buffer area, during the sequence number L_V (R) of the next frame that receives less than expectation as the sequence number L_SEQ of the frame that receives, judge whether the sequence number identical with described L_SEQ is arranged in the described time-delay buffer area, if have, then corresponding sequence number is deleted from described time-delay buffer area, and the described current frame that receives is sent into the buffer area that reorders; Otherwise, abandon the current frame that receives, calculate the sequence number of lost frames, and with corresponding sequence number be saved in the time-delay buffer area in, sequence number with the lost frames before the preset value is inserted in the negative response NAK tabulation simultaneously, sends NAK to transmitting terminal RLP layer when delivery time arrives, and requires the frame of retransmission of lost.
After described receiving terminal RLP layer receives frame, at first extract the sequence number L_SEQ of described frame.
If described L_SEQ〉L_V (R), then described receiving terminal RLP layer is carried out following operation:
Steps A: the absolute value and the presetting first threshold a that subtract each other with described L_SEQ and described L_V (R) compare, if described | L_SEQ-L_V (R) |≤a, then execution in step E; If described | L_SEQ-L_V (R) | a, then execution in step B;
Step B: judge whether described L_SEQ is continuous with the sequence number of a last abnormal frame, if, execution in step C then; Otherwise, execution in step D;
Step C: the abnormal frame counter add judge counter in 1 back currency whether greater than the second threshold value b that presets, if, execution in step E then; Otherwise, execution in step D;
Step D: abandon the described current frame that receives, and zero clearing abnormal frame counter, this frame processing finishes;
Step e: calculate the sequence number of lost frames, and the lost frames sequence number that calculates is inserted in the NAK tabulation.
If the current frame that receives of described receiving terminal RLP layer is the frame that expectation receives in proper order, then described receiving terminal RLP layer is sent present frame into the buffer area that reorders, and this frame processing finishes.
If the current frame that receives of described receiving terminal RLP layer is not the frame that expectation receives in proper order, then carry out following steps:
Step a: the sequence number L_V (N) of the frame that comparison L_SEQ and expectation receive in proper order, if L_SEQ〉L_V (N), then execution in step b; If L_SEQ＜L_V (N), then execution in step c;
Step b: the size that compares L_SEQ and L_V (R);
Step c: compare with described L_SEQ and described L_V (N) absolute value that subtracts each other and the 3rd threshold value c that presets, if described | and L_SEQ-L_V (N) |≤c, then abandon the described current frame that receives, this frame processing finishes; If described | L_SEQ-L_V (N) | c, then receiving terminal RLP layer initiates to reset, and this frame processing finishes.
When described receiving terminal RLP is inserted into the NAK tabulation with the sequence number of lost frames, also the sequence number of respective frame is deleted from described time-delay buffer area.
Described receiving terminal RLP can be saved in numbering of lost frames sequence number distribution in the described time-delay buffer area for each, and also deletes corresponding numbers in deletion lost frames sequence number.
Described preset value equals to be saved at last the poor of the numbering n of the lost frames sequence number in the described time-delay buffer area and the 4th threshold value d.
After lost frames sequence number in the described time-delay buffer area was deleted, the frame number of its back moved forward successively.
The present invention further discloses a kind of rlp frame retransmission arrangement, comprises receiver module, control module, time-delay cache module, the cache module that reorders, NAK list block and sending module, and is described
Receiver module is used to receive rlp frame, extracts L_SEQ and sends to described control module;
Control module is used for the size of comparison L_SEQ and L_V (R); Be used for during less than L_V (R), judging whether the sequence number identical with current L_SEQ is arranged in the described time-delay buffer area at L_SEQ; Be used to calculate the sequence number of lost frames; Be used for adding the sequence number of lost frames to described time-delay cache module, perhaps from described time delay module, delete; The frame that is used for receiving abandons or sends into the described cache module that reorders; Be used for the sequence number of the lost frames before the preset value is inserted into the NAK list block;
The time-delay cache module is used for the sequence number of cache miss frame;
The cache module that reorders is used for the normal frame of buffer memory;
The NAK list block is used to store the frame number tabulation that needs retransmit;
Sending module is used for when delivery time arrives sending NAK to transmitting terminal RLP layer according to the NAK tabulation of NAK list block.
Described control module also is used to calculate the absolute value that described current L_SEQ and L_V (R) subtract each other; Be used to judge absolute value that described current L_SEQ and L_V (R) subtract each other and the size of a; Be used to judge whether described current L_SEQ is continuous with the sequence number of a last abnormal frame; Be used to add 1 or zero clearing abnormal frame counter; Be used to judge the size of the currency and the b of described counter; The size that is used for more described current L_SEQ and L_V (N); Be used to calculate the absolute value that described current L_SEQ and described L_V (N) subtract each other; Be used to judge absolute value that described current L_SEQ and described L_V (N) subtract each other and the size of c; Be used for initiating to reset.
Prior art of the present invention is compared, and has improved the compatibility of RLP layer to various application scenarioss, makes it can guarantee still that in the bigger situation of shake the RLP retransmission rate is low and transmission rate is constant.
Description of drawings
Fig. 1 is the block diagram of device of the present invention;
Fig. 2 is the flow chart of the method for the invention;
Fig. 3 is the interacting message schematic diagram of RLP interlayer.
Embodiment
Below in conjunction with accompanying drawing and preferred embodiment the present invention is further introduced.
As shown in Figure 1, be rlp frame retransmission arrangement of the present invention, comprise receiver module, control module, time-delay cache module, the cache module that reorders, NAK list block and sending module, wherein,
Receiver module is used to receive rlp frame, extracts L_SEQ and sends to control module;
Control module is used for the size of comparison L_SEQ and L_V (R); Be used for during less than L_V (R), judging whether the sequence number identical with current L_SEQ is arranged in the described time-delay buffer area at L_SEQ; Be used to calculate the sequence number of lost frames; Be used for adding the sequence number of lost frames to the time-delay cache module, perhaps from time delay module, delete; The frame that is used for receiving abandons or sends into the cache module that reorders; Be used for the sequence number of the lost frames before the preset value is inserted into the NAK list block; Also be used to calculate the absolute value that current L_SEQ and L_V (R) subtract each other; Be used to judge absolute value that current L_SEQ and L_V (R) subtract each other and the size of a; Be used to judge whether current L_SEQ is continuous with the sequence number of a last abnormal frame; Be used to add 1 or zero clearing abnormal frame counter; Be used to judge the size of the currency and the b of counter; The size that is used for more current L_SEQ and L_V (N); Be used to calculate the absolute value that current L_SEQ and described L_V (N) subtract each other; Be used to judge absolute value that current L_SEQ and described L_V (N) subtract each other and the size of c; Be used for initiating to reset;
The time-delay cache module is used for the sequence number of cache miss frame;
The cache module that reorders is used for the normal frame of buffer memory;
The NAK list block is used to store the frame number tabulation that needs retransmit;
Sending module is used for when delivery time arrives sending NAK to transmitting terminal RLP layer according to the NAK tabulation of NAK list block.
As shown in Figure 2, be the flow chart of the method for the invention, in conjunction with Fig. 3, specifically comprise the steps:
Step 200: after receiving terminal RLP layer receives rlp frame, extract the sequence number L_SEQ of present frame;
Step 201: relatively frame number L_V (N) is received in L_SEQ and expectation in proper order, if L_SEQ＜L_V (N), then execution in step 202; If L_SEQ=L_V (N), then execution in step 205; If L_SEQ〉L_V (N), then execution in step 206;
Step 202: relatively | L_SEQ-L_V (N) | with the 3rd default threshold value c, if | L_SEQ-L_V (N) |≤c, then execution in step 203; If | L_SEQ-L_V (N) |〉c, execution in step 204;
In the present embodiment, the value of c gets 100;
Step 203: abandon present frame, this frame disposes, and can begin the processing of next frame;
Step 204: initiate to reset, this frame disposes, and can begin the processing of next frame;
Step 205: then present frame is sent into the buffer area that reorders, the back group bag that reorders sends to a protocol layer, and this frame processing finishes, and can begin the processing of next frame;
Step 206: judge the next frame sequence number L_V (R) whether L_SEQ receives greater than expectation; If then execution in step 207; Otherwise, execution in step 213;
Step 207: relatively | L_SEQ-L_V (R) | with presetting first threshold a, if | L_SEQ-L_V (R) |≤a, then execution in step 212; If | L_SEQ-L_V (R) |〉a, then execution in step 208;
In the present embodiment, the value of a gets 50;
Step 208: judge whether L_SEQ is continuous with the sequence number of a last abnormal frame, if then execution in step 209; Otherwise, think that present frame is an abnormal frame, execution in step 211;
Step 209: the abnormal frame counter adds 1,
Step 210: whether the currency of judging counter is greater than the second threshold value b, if think that then present frame is a normal frame, execution in step 212; Otherwise, think that present frame is an abnormal frame, execution in step 211;
In the present embodiment, the value of b gets 7;
Step 211: abandon this frame, zero clearing abnormal frame counter, this frame disposes, and can begin the processing of next frame;
Step 212: calculate the sequence number of lost frames, and be inserted in the NAK tabulation execution in step 217;
Step 213: judge in the time-delay buffer area whether have the frame number identical, if then execution in step 214 with L_SEQ; Otherwise, execution in step 215;
Step 214: frame number and the numbering thereof identical in the deletion time-delay buffer area with L_SEQ, the frame number of this frame number back moves forward successively, simultaneously present frame is sent into the buffer area that reorders, and this frame disposes, and can begin the processing of next frame;
Step 215: abandoning the current frame that receives, calculate the sequence number of lost frames, and the lost frames sequence number that calculates is saved in the time-delay buffer area, is that corresponding sequence number is distributed a numbering simultaneously;
Step 216: the sequence number of the lost frames before the numbering n that will be saved in the lost frames sequence number of time-delay in the buffer area at last and the difference of the 4th threshold value d is inserted into NAK and tabulates, simultaneously corresponding sequence number and numbering thereof are deleted from the time-delay buffer area, remaining frame number moves forward successively;
In the present embodiment, the value of d gets 2;
Step 217: delivery time then sends NAK according to the information in the NAK tabulation to transmitting terminal RLP layer, requires the rlp frame of retransmission of lost.
Among the present invention, the threshold value that relates to is natural number, and the scope that NAK number that its value mainly can receive according to transmitting terminal RLP layer and system can tolerate shake is determined.
The above is preferred embodiment of the present invention only, is not to be used to limit protection scope of the present invention.Should be understood that; concerning the those of ordinary skill in field, the technology of the present invention place; can be equal to accordingly according to technical scheme of the present invention and design thereof and change or replace, and all these changes or replacement, all should belong to the protection range of claims of the present invention.
Claims (11)
1, a kind of radio link protocol rlp frame repeating method, it is characterized in that, receiving terminal RLP layer is kept at the sequence number of lost frames in the time-delay buffer area, during the sequence number of the next frame that receives less than expectation when the sequence number of the frame that receives, judge whether the sequence number identical with the sequence number of the described current frame that receives is arranged in the described time-delay buffer area, if have, then corresponding sequence number is deleted from described time-delay buffer area, and the described current frame that receives is sent into the buffer area that reorders; Otherwise, abandon the current frame that receives, calculate the sequence number of lost frames, and with corresponding sequence number be saved in the time-delay buffer area in, sequence number with the lost frames before the preset value is inserted in the negative response NAK tabulation simultaneously, sends NAK to transmitting terminal RLP layer when delivery time arrives, and requires the frame of retransmission of lost.
2, rlp frame repeating method as claimed in claim 1 is characterized in that, after described receiving terminal RLP layer receives frame, at first extracts the sequence number of described frame.
3, rlp frame repeating method as claimed in claim 1 is characterized in that, if the sequence number of the next frame that the sequence number of the described current frame that receives receives greater than expectation, then described receiving terminal RLP layer is carried out following operation:
Steps A: absolute value and presetting first threshold that the sequence number of the next frame that receives with the sequence number and the described expectation of the described current frame that receives is subtracted each other compare, if described absolute value is smaller or equal to described first threshold, and execution in step E then; If described absolute value is greater than described first threshold, execution in step B then;
Step B: whether the sequence number of judging the described current frame that receives is continuous with the sequence number of a last abnormal frame, if, execution in step C then; Otherwise, execution in step D;
Step C: the abnormal frame counter add judge described counter in 1 back currency whether greater than second threshold value of presetting, if, execution in step E then; Otherwise, execution in step D;
Step D: abandon the described current frame that receives, and zero clearing abnormal frame counter, this frame processing finishes;
Step e: calculate the sequence number of lost frames, and the lost frames sequence number that calculates is inserted in the NAK tabulation.
4, rlp frame repeating method as claimed in claim 1 is characterized in that, if the current frame that receives of described receiving terminal RLP layer is the frame that expectation receives in proper order, then described receiving terminal RLP layer is sent present frame into the buffer area that reorders, and this frame processing finishes.
5, as claim 1 or 4 described rlp frame repeating methods, it is characterized in that,, then carry out following steps if the current frame that receives of described receiving terminal RLP layer is not the frame that expectation receives in proper order:
Step a: the sequence number of the frame that the sequence number of the more current frame that receives and expectation receive in proper order, if the sequence number of the frame that the sequence number of the current frame that receives receives in proper order greater than expectation, then execution in step b; If the sequence number of the frame that the sequence number of the current frame that receives receives in proper order less than expectation, then execution in step c;
Step b: the size of the sequence number of the next frame that the sequence number of the more current frame that receives and expectation receive;
Step c: the absolute value that the sequence number of the frame that receives with the sequence number and the described expectation of the described current frame that receives is subtracted each other compares with the 3rd default threshold value, if described absolute value is smaller or equal to described the 3rd threshold value, then abandon the described current frame that receives, this frame processing finishes; If described absolute value is greater than described the 3rd threshold value, then receiving terminal RLP layer initiates to reset, and this frame processing finishes.
6, rlp frame repeating method as claimed in claim 1 is characterized in that, when described receiving terminal RLP is inserted into the NAK tabulation with the sequence number of lost frames, also the sequence number of respective frame is deleted from described time-delay buffer area.
7, rlp frame repeating method as claimed in claim 1 is characterized in that, described receiving terminal RLP can be saved in numbering of lost frames sequence number distribution in the described time-delay buffer area for each, and also deletes corresponding numbers in deletion lost frames sequence number.
8, rlp frame repeating method as claimed in claim 1 is characterized in that, described preset value equals to be saved at last the poor of the numbering of the lost frames sequence number in the described time-delay buffer area and the 4th threshold value.
As claim 1 or 6 described rlp frame repeating methods, it is characterized in that 9, after the lost frames sequence number in the described time-delay buffer area was deleted, the frame number of its back moved forward successively.
10, a kind of rlp frame retransmission arrangement is characterized in that, comprises receiver module, control module, time-delay cache module, the cache module that reorders, NAK list block and sending module, and is described
Receiver module is used to receive rlp frame, extracts to receive the sequence number of frame and send to described control module;
The size of the sequence number of the next frame that the sequence number of the frame that control module is used for relatively receiving and expectation receive; When being used for the sequence number of the next frame that receives less than expectation in the sequence number of the frame that receives, judge whether the sequence number identical with the sequence number of the current frame that receives is arranged in the described time-delay buffer area; Be used to calculate the sequence number of lost frames; Be used for adding the sequence number of lost frames to described time-delay cache module, perhaps from described time delay module, delete; The frame that is used for receiving abandons or sends into the described cache module that reorders; Be used for the sequence number of the lost frames before the preset value is inserted into the NAK list block;
The time-delay cache module is used for the sequence number of cache miss frame;
The cache module that reorders is used for the normal frame of buffer memory;
The NAK list block is used to store the frame number tabulation that needs retransmit;
Sending module is used for when delivery time arrives sending NAK to transmitting terminal RLP layer according to the NAK tabulation of NAK list block.
11, rlp frame retransmission arrangement as claimed in claim 10 is characterized in that, the absolute value that the sequence number of the next frame that the sequence number that described control module also is used to calculate the described current frame that receives and expectation receive is subtracted each other; The absolute value that the sequence number of the next frame that is used to judge the sequence number of the described current frame that receives and expects to receive is subtracted each other and the size of presetting first threshold; Be used to judge whether the sequence number of the described current frame that receives is continuous with the sequence number of a last abnormal frame; Be used to add 1 or zero clearing abnormal frame counter; Be used to judge the currency of described counter and the size of second threshold value of presetting; The size that is used for the sequence number of the sequence number of the more described current frame that receives and the frame that expectation receives in proper order; Be used to calculate the absolute value that the sequence number of the sequence number of the described current frame that receives and the frame that described expectation receives is subtracted each other; Be used to judge the size of absolute value that the sequence number of the sequence number of the described current frame that receives and the frame that described expectation receives subtracts each other and default the 3rd threshold value; Be used for initiating to reset.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910105506 CN101488841B (en) | 2009-02-18 | 2009-02-18 | Frame retransmission method and apparatus for radio link protocol |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 200910105506 CN101488841B (en) | 2009-02-18 | 2009-02-18 | Frame retransmission method and apparatus for radio link protocol |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN101488841A true CN101488841A (en) | 2009-07-22 |
| CN101488841B CN101488841B (en) | 2013-03-27 |
Family
ID=40891536
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 200910105506 Active CN101488841B (en) | 2009-02-18 | 2009-02-18 | Frame retransmission method and apparatus for radio link protocol |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101488841B (en) |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102238206A (en) * | 2010-04-23 | 2011-11-09 | 英业达集团(天津)电子技术有限公司 | Image file packet retransmission method |
| CN102333331A (en) * | 2010-07-13 | 2012-01-25 | 中兴通讯股份有限公司 | Method and apparatus for statistics of reverse retransmission rate of radio link protocol layer |
| CN103501259A (en) * | 2013-10-21 | 2014-01-08 | 腾讯科技（深圳）有限公司 | Packet loss detection method and detector |
| CN103716140A (en) * | 2013-12-26 | 2014-04-09 | 中国工程物理研究院计算机应用研究所 | Data release and reception method based on self-adaptive complementary mechanism |
| CN105553785A (en) * | 2016-01-27 | 2016-05-04 | 华为技术有限公司 | IDLE frame filtering method and device |
| CN107454276A (en) * | 2016-06-01 | 2017-12-08 | 中兴通讯股份有限公司 | A kind of subscriber terminal equipment and its data forwarding method and communication system |
| CN107491356A (en) * | 2017-08-28 | 2017-12-19 | 广州市百果园信息技术有限公司 | Message treatment method, terminal device and server based on sequence number |
| CN111106902A (en) * | 2018-10-26 | 2020-05-05 | 杭州海康威视系统技术有限公司 | Data message transmission method, device, equipment and computer readable storage medium |
| CN113392667A (en) * | 2021-08-17 | 2021-09-14 | 深圳市成为信息技术有限公司 | Data transmission method of reader-writer, data receiver and storage medium |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| KR20040069570A (en) * | 2003-01-29 | 2004-08-06 | 삼성전자주식회사 | Apparatus and method for requiring retransmission of radio link protocol data in mobile communication system |
| KR100533024B1 (en) * | 2003-02-06 | 2005-12-02 | 엘지전자 주식회사 | A receiving method of rlp frame data considering wireless circumstances |
| CN101006674A (en) * | 2004-06-18 | 2007-07-25 | 高通股份有限公司 | Radio link protocols for a wireless communication system |
| CN100499444C (en) * | 2005-09-02 | 2009-06-10 | 华为技术有限公司 | Data frame transmission method, device and system based on no-answer mechanism |
-
2009
- 2009-02-18 CN CN 200910105506 patent/CN101488841B/en active Active
Cited By (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102238206A (en) * | 2010-04-23 | 2011-11-09 | 英业达集团(天津)电子技术有限公司 | Image file packet retransmission method |
| CN102333331A (en) * | 2010-07-13 | 2012-01-25 | 中兴通讯股份有限公司 | Method and apparatus for statistics of reverse retransmission rate of radio link protocol layer |
| CN103501259B (en) * | 2013-10-21 | 2016-08-31 | 腾讯科技（深圳）有限公司 | A kind of method of packet loss detection and detection device |
| CN103501259A (en) * | 2013-10-21 | 2014-01-08 | 腾讯科技（深圳）有限公司 | Packet loss detection method and detector |
| WO2015058613A1 (en) * | 2013-10-21 | 2015-04-30 | 腾讯科技（深圳）有限公司 | Method and device for detecting data packet, and storage medium |
| CN103716140A (en) * | 2013-12-26 | 2014-04-09 | 中国工程物理研究院计算机应用研究所 | Data release and reception method based on self-adaptive complementary mechanism |
| CN103716140B (en) * | 2013-12-26 | 2017-02-15 | 中国工程物理研究院计算机应用研究所 | Data release and reception method based on self-adaptive complementary mechanism |
| CN105553785A (en) * | 2016-01-27 | 2016-05-04 | 华为技术有限公司 | IDLE frame filtering method and device |
| CN107454276A (en) * | 2016-06-01 | 2017-12-08 | 中兴通讯股份有限公司 | A kind of subscriber terminal equipment and its data forwarding method and communication system |
| CN107454276B (en) * | 2016-06-01 | 2021-07-27 | 中兴通讯股份有限公司 | User terminal equipment, data forwarding method thereof and communication system |
| CN107491356A (en) * | 2017-08-28 | 2017-12-19 | 广州市百果园信息技术有限公司 | Message treatment method, terminal device and server based on sequence number |
| CN111106902A (en) * | 2018-10-26 | 2020-05-05 | 杭州海康威视系统技术有限公司 | Data message transmission method, device, equipment and computer readable storage medium |
| CN113392667A (en) * | 2021-08-17 | 2021-09-14 | 深圳市成为信息技术有限公司 | Data transmission method of reader-writer, data receiver and storage medium |
Also Published As
| Publication number | Publication date |
|---|---|
| CN101488841B (en) | 2013-03-27 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101488841B (en) | Frame retransmission method and apparatus for radio link protocol | |
| CN1951052B (en) | Apparatus and method for enhanced um rlc data handling | |
| RU2461147C2 (en) | Method of processing radio protocol in mobile communication system and mobile communication transmitter | |
| US9629036B2 (en) | Method and apparatus for performing handover using packet data convergence protocol (PDCP) reordering in mobile communication system | |
| CN101171806B (en) | Method and apparatus for transmitting and receiving packet data using predefined length indicant in mobile communication system | |
| US10819416B2 (en) | Apparatuses and methods for using ARQ processes in a relay device | |
| CN101043306A (en) | Method and apparatus for handling retransmissions in a wireless communications system | |
| EP2245783B1 (en) | Controlling point-to-multipoint transmissions of content data over a radio interface | |
| EP1243144A1 (en) | Method for making data transmission more effective and a data transmission protocol | |
| CN101385375A (en) | Link layer entity configuring technology for switching | |
| CN101114992A (en) | Switch method, sending terminal equipment and receiving terminal equipment | |
| CN101001135A (en) | Method of raising transmission reliablity of IP head compression data pack | |
| CN102469511A (en) | Packet data convergence protocol layer handling data method and system | |
| CN105379342A (en) | Data retransmission method and device | |
| CN101442398A (en) | Method for handling radio bearer messages during reset and reestablishment in a wireless system | |
| CN101998547A (en) | Data forwarding method, base station and relay station | |
| CN104184568B (en) | The data transmission method and system of communication system | |
| CN107209713A (en) | The method and system that file is repaired on demand | |
| CN100571106C (en) | A kind of wireless network communication apparatus | |
| US8345649B2 (en) | Method for indication of consecutive data units in a RAN | |
| CN104426638A (en) | Data submission method and device | |
| US6487201B1 (en) | Method for managing received data in complex digital cellular terminal | |
| CN101006674A (en) | Radio link protocols for a wireless communication system | |
| CN101150494A (en) | Data packet transmission device, receiving device and method | |
| CN1997020A (en) | Segmentation and reassembly receiver and operation method thereof |
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 |