CN102377552A - Data retransmission method and system - Google Patents
Data retransmission method and system Download PDFInfo
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- CN102377552A CN102377552A CN2010102621681A CN201010262168A CN102377552A CN 102377552 A CN102377552 A CN 102377552A CN 2010102621681 A CN2010102621681 A CN 2010102621681A CN 201010262168 A CN201010262168 A CN 201010262168A CN 102377552 A CN102377552 A CN 102377552A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—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
- H04L1/1607—Details of the supervisory signal
- H04L1/1621—Group acknowledgement, i.e. the acknowledgement message defining a range of identifiers, e.g. of sequence numbers
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Abstract
The invention provides a data retransmission method, which comprises the following steps that: a terminal receives data from an access network; if detecting data loss, the terminal returns a notification message to the access network to request for retransmission of lost data, wherein the notification message carries retransmitted data range information and carrier identifier information of a carrier to which retransmitted data belongs; and when receiving the notification message, the access network searches the sent data instructed by the carrier identifier information on the carrier to acquire the retransmitted data according to the carrier identifier information and the retransmitted data range information which are carried in the notification message, and sends the retransmitted data to the terminal. The invention also provides a data retransmission system. In the method and the system, only the carrier where the lost data is positioned is searched; therefore, the data retransmission processing efficiency can be improved.
Description
Technical field
The present invention relates in CDMA20001x EVDO RevB (hereinafter to be referred as the RevB) wireless access system, the treatment technology of QuickNAK is specifically related to a kind of data repeating method and system.
Background technology
Current RevB system; When using multicarrier to send forward data; The data of Access Network are dispersed on each carrier wave and send; Initial data sequence number on each carrier wave is discontinuous, and the terminal can't be judged whether the data of sending on the independent carrier wave have by the continuity that detects the initial data sequence number and lose.So packet of the every transmission of each carrier wave of Access Network is provided with QN (QuickNAK) sequence number that increases progressively continuously on this carrier wave can for this packet.
When the terminal received data, if it is discontinuous to detect the data QN sequence number of receiving on the independent carrier wave, just explaining on this carrier wave had loss of data.The RevB terminal will produce a QuickNAK message, sends to the RevB Access Network, the data that request retransmission is lost.
Pointed out the data segment scope of losing in the QuickNAK message; And the data of each carrier wave that Access Network sends, its original sequence number is not again continuous, so the RevB Access Network is when handling QuickNAK message; Data retransmission scope according to terminal request; When search needs to retransmit the data of giving the terminal, need the sequence number of sending data of the whole carrier waves of traversal, efficient is lower.
Summary of the invention
The technical problem that the present invention will solve is: a kind of data repeating method and system are provided, to improve the data re-transmission treatment effeciency.
In order to address the above problem, the invention provides a kind of data repeating method, comprising:
The terminal receives data from Access Network, if detect loss of data, then said terminal is returned notification message and given Access Network, the data that request retransmission is lost, the carrier identification information of carrying the affiliated carrier wave of data retransmission range information and data retransmission in the said notification message;
When said Access Network receives said notification message; According to the said carrier identification information and the data retransmission range information of carrying in the said notification message; Search for the data of having sent on the carrier wave of said carrier identification information indication, obtain data retransmission, send said data retransmission and give said terminal.
Further, said method also can have following characteristics, and whether said terminal is detected data through following mode and lost: whether the QN sequence number of the data that receive on the same carrier wave is detected at said terminal continuous, if discontinuous, then judgment data is lost.
Further, said method also can have following characteristics, and said method also comprises: said Access Network sends to said terminal with the corresponding relation of said carrier identification information and carrier wave.
Further, said method also can have following characteristics, and said Access Network is also preserved the corresponding relation that has sent data on the carrier wave of carrier identification information and this carrier identification information indication.
Further, said method also can have following characteristics, and said notification message is a QuickNAK message.
The present invention also provides a kind of data re-transmission system, comprises Access Network and terminal, wherein:
Said terminal is used for receiving data from Access Network, if detect loss of data, returns notification message and gives Access Network, the data that request retransmission is lost, the carrier identification information of carrying the affiliated carrier wave of data retransmission range information and data retransmission in the said notification message;
Said Access Network; When being used to receive said notification message; According to the said carrier identification information and the data retransmission range information of carrying in the said notification message; Search for the data of having sent on the carrier wave of said carrier identification information indication, obtain data retransmission, send said data retransmission and give said terminal.
Further, said system also can have following characteristics, and said terminal comprises data wireless links receiver module and message transmission module, wherein:
Said data wireless links receiver module is used for receiving data from said Access Network, whether detects obliterated data;
Said message transmission module; Be used for when said data wireless links receiver module detects loss of data; Return notification message and give Access Network, the data that request retransmission is lost, the carrier identification information of carrying the affiliated carrier wave of data retransmission range information and data retransmission in the said notification message;
Said Access Network comprises data wireless links sending module and message processing module, wherein:
Said data wireless links sending module is used to send data to said terminal; And, according to the indication of said message processing module, send said data retransmission and give said terminal;
Said message processing module; When being used to receive said notification message; According to the said carrier identification information and the data retransmission range information of carrying in the said notification message; Search for the data of having sent on the carrier wave of said carrier identification information indication, obtain data retransmission, indicate said data wireless links sending module to send said data retransmission and give said terminal.
Further, said system also can have following characteristics, and whether said data wireless links receiver module detects data through following mode and lose: whether the QN sequence number that detects the data that receive on the same carrier wave is continuous, if discontinuous, judgment data is lost.
Further, said system also can have following characteristics, and said data wireless links sending module also is used for the corresponding relation of said carrier identification information and carrier wave is sent to said terminal.
Further, said system also can have following characteristics, and said data wireless links sending module also is used to preserve the corresponding relation that has sent data on the carrier wave of said carrier identification information and this carrier identification information indication.
Compared with prior art; The present invention when the search data retransmission, only needs the data of having sent on the carrier wave of searching carrier identification information indication through in QuickNAK message, carrying carrier identification information; And need not to travel through again the transmission data of all carrier waves; Improve the receiving and dispatching mechanism of RevB system multi-carrier data, made when access net system is handled QuickNAK, reduced a large amount of disposal of Redundancy flow processs.Suppose that the RevB system has N carrier wave to send data simultaneously,, can reduce the volumes of searches of (N-1)/N * 100%, improve treatment effeciency greatly through change of the present invention.Many when carrier number, when the data volume of transmission is bigger, can obviously improve the treatment effeciency of QuickNAK.
Description of drawings
Fig. 1 is a RevB multicarrier data receiving-transmitting system device sketch map;
Fig. 2 is that wireless access network data of the present invention are sent and terminal data receives flow chart;
Fig. 3 is the flow chart that wireless access network of the present invention is handled QuickNAK.
Embodiment
Core concept of the present invention is; When the terminal detects loss of data, carry carrier identification information in the QuickNAK message of returning, when Access Network receives QuickNAK message; Only search the data of having sent on the corresponding carrier wave of this carrier identification information; Obtain data retransmission, and need not travel through the transmission data of whole carrier waves, improved search efficiency.
The present invention provides a kind of data repeating method, comprising:
When the terminal received data, if detect loss of data, then said terminal was returned notification message and is given Access Network, the data that request retransmission is lost, the carrier identification information of carrying the affiliated carrier wave of data retransmission range information and data retransmission in the said notification message;
When said Access Network receives said notification message; According to carrier identification information of carrying in the said notification message and data retransmission range information; Search for the data of having sent on the carrier wave of said carrier identification information indication, obtain data retransmission, send said data retransmission and give said terminal.
Wherein, whether said terminal is detected data through following mode and lost: said terminal detects the QN sequence number of the data that receive on the same carrier wave when discontinuous, and judgment data is lost.
Wherein, said Access Network also sends to said terminal with the corresponding relation of said carrier identification information and carrier wave.Also can be in advance at the corresponding relation of terminal configuration carrier identification information and carrier wave.
Wherein, said Access Network is also preserved the corresponding relation that has sent data on carrier wave and the carrier wave.
Wherein, said notification message can be QuickNAK message, also can be other message.
The present invention also provides a kind of data re-transmission system, comprises Access Network and terminal, wherein:
Said terminal is used for receiving data from Access Network, if detect loss of data, returns notification message and gives Access Network, the data that request retransmission is lost, the carrier identification information of carrying the affiliated carrier wave of data retransmission range information and data retransmission in the said notification message;
Said Access Network; When being used to receive said notification message; According to the said carrier identification information and the data retransmission range information of carrying in the said notification message; Search for the data of having sent on the carrier wave of said carrier identification information indication, obtain data retransmission, send said data retransmission and give said terminal.
Wherein, said terminal comprises data wireless links receiver module and message transmission module:
Said data wireless links receiver module is used for receiving data from said Access Network, whether detects obliterated data;
Said message transmission module; Be used for when said data wireless links receiver module detects loss of data; Return notification message and give Access Network, the data that request retransmission is lost, the carrier identification information of carrying the affiliated carrier wave of data retransmission range information and data retransmission in the said notification message;
Said Access Network comprises data wireless links sending module and message processing module:
Said data wireless links sending module is used to send data to said terminal; And, according to the indication of said message processing module, send said data retransmission and give said terminal;
Said message processing module; When being used to receive said notification message; According to the said carrier identification information and the data retransmission range information of carrying in the said notification message; Search for the data of having sent on the carrier wave of said carrier identification information indication, obtain data retransmission, indicate said data wireless links sending module to send said data retransmission and give said terminal.
Wherein, whether said data wireless links receiver module detects data through following mode and lose: whether continuous, if discontinuous, judgment data is lost if detecting the data QN sequence number that receives on the same carrier wave.
Wherein, said data wireless links sending module also is used for the corresponding relation of said carrier identification information and carrier wave is sent to said terminal.
Wherein, said data wireless links sending module also is used to preserve the corresponding relation that has sent data on the carrier wave of said carrier identification information and this carrier identification information indication.
The present invention provides a kind of data repeating method, may further comprise the steps:
Step 110, the carrier identification information that Access Network is corresponding with each carrier wave sends to the terminal;
Step 120, Access Network send data to said terminal, for the packet that sends on each carrier wave is provided with the QN sequence number that increases progressively continuously, send successfully after, the data sequence number that said Access Network record has sent and the corresponding relation of carrier wave;
Step 130, the terminal receives data, detects whether loss of data is arranged on the same carrier wave, does not lose if having, and changes step 140; If loss of data is arranged, change step 150;
Whether wherein, detect data through following mode and lose: said terminal detects the data QN sequence number that receives on the same carrier wave when discontinuous, and judgment data is lost.
Step 140, the terminal is submitted to its upper strata processing module with the data that receive and is handled, and finishes;
Step 150, terminal send a notification message to Access Network, in this notification message, carry carrier identification information, with carrier wave under the data retransmission that indicates request, and carry the data retransmission range information; This notification message can be QuickNAK message, also can be other message.
Step 160; Access Network receives and handles this notification message, according to carrier identification information of carrying in this notification message and data retransmission range information, searches the data record of the corresponding carrier wave of this carrier identification information; After finding data retransmission, send said data retransmission and give the terminal.
Further specify the present invention below in conjunction with accompanying drawing and specific embodiment.
As shown in Figure 1, the present invention provides a kind of data re-transmission system, comprises Access Network 100 and terminal 200:
Said Access Network 100 comprises:
Data wireless links sending module 101; Be responsible for sending the data wireless links receiver module 201 that the multicarrier data are given the terminal, and sent the data sequence number of data and the corresponding relation of data length on the carrier identification information of preserving each carrier wave and each carrier wave through eating dishes without rice or wine.Each carrier wave is provided with a QN sequence number for the packet of its transmission separately, and on same carrier wave, this QN sequence number increases progressively continuously.
Message processing module 102, the QuickNAK message that the message transmission module 202 of responsible receiving terminal is sent is handled QuickNAK message; According to the carrier identification information of wherein carrying; Only travel through the transmission data of corresponding carrier wave, search the data segment that terminal request retransmits, send data retransmission and give the terminal
Terminal 200 further comprises:
Data wireless links receiver module 201; Be responsible for receiving the multicarrier data, and detect data and whether lose, wherein from the data wireless links sending module 101 of Access Network; QN sequence number in the packet on the same carrier wave that receives through detection; If discontinuous, just judging on this carrier wave has loss of data, thereby produces QuickNAK.
Message transmission module 202; Be used for when wireless data receiver module judgment data is lost; Structure also sends the message processing module 102 that QuickNAK message is given Access Network; The data segment that request retransmission is lost, the carrier identification information of carrying the affiliated carrier wave of data retransmission range information and data retransmission in the said QuickNAK message.
As shown in Figure 2, the transmission of multicarrier data and reception, the structure flow process of QuickNAK is following:
Step 210: the data wireless links sending module 101 of Access Network, on a plurality of carrier waves, send data to the data wireless links receiver module 201 at terminal, the packet that each carrier wave sends on the carrier wave separately for this reason is provided with the QN sequence number that increases progressively continuously.After data were sent and to be finished, the data wireless links sending module 101 of Access Network was noted the data sequence number that sent and the corresponding relation of carrier wave.
Step 220: the data wireless links receiver module 201 at terminal receives the multicarrier data.
Step 230: whether to the data of same carrier wave, it is continuous to detect its QN sequence number respectively; If sequence number is continuous, explaining does not have loss of data, changes step 240; If the QN sequence number has saltus step, explain and eat dishes without rice or wine to have lost data, change step 250.
Step 240: the terminal according to the original sequence number reorganization of data, is proceeded the logical process on upper strata to the multicarrier data that receive, and finishes.
Step 250: terminal wireless link data receiver module 201 need to confirm the data area of re-transmission according to the data sequence number of packet before and after the detected QN cavity on the same carrier wave.
Step 260: the message transmission module 202 structure QuickNAK message at terminal, carry carrier identification information and data retransmission range information in the message.
Step 270: the message transmission module 202 at terminal is sent the message processing module 102 that QuickNAK message is given Access Network.
As shown in Figure 3, the flow process that Access Network is handled QuickNAK message is following:
Step 310: the message processing module 102 of Access Network receives QuickNAK message;
Step 320: the message processing module 102 of Access Network is handled this QuickNAK message; According to the carrier identification information of carrying in this QuickNAK message; Only in the corresponding transmission data of the carrier wave of this carrier identification information indication, search the obliterated data of terminal request;
Step 330: according to the lookup result of obliterated data, if do not find obliterated data, process ends; If find, change step 340;
Step 340: the message processing module 102 of Access Network is with the interval range of the data retransmission that finds; The data wireless links sending module 101 of notice Access Network retransmits this segment data, and the data wireless links sending module 101 of Access Network sends these data retransmissions and gives the terminal.
The present invention is through carrying carrier identification information in QuickNAK message; When the search data retransmission; Only need the data of having sent on the carrier wave of searching carrier identification information indication, and need not to travel through again the transmission data of all carrier waves, reduced a large amount of disposal of Redundancy flow processs.Many when carrier number, when the data volume of transmission is bigger, can obviously improve the treatment effeciency of QuickNAK.
Claims (10)
1. a data repeating method is characterized in that, comprising:
The terminal receives data from Access Network, if detect loss of data, then said terminal is returned notification message and given Access Network, the data that request retransmission is lost, the carrier identification information of carrying the affiliated carrier wave of data retransmission range information and data retransmission in the said notification message;
When said Access Network receives said notification message; According to the said carrier identification information and the data retransmission range information of carrying in the said notification message; Search for the data of having sent on the carrier wave of said carrier identification information indication, obtain data retransmission, send said data retransmission and give said terminal.
2. the method for claim 1 is characterized in that, whether said terminal is detected data through following mode and lost: whether the QN sequence number of the data that receive on the same carrier wave is detected at said terminal continuous, if discontinuous, then judgment data is lost.
3. the method for claim 1 is characterized in that, said method also comprises: said Access Network sends to said terminal with the corresponding relation of said carrier identification information and carrier wave.
4. the method for claim 1 is characterized in that, said Access Network is also preserved the corresponding relation that has sent data on the carrier wave of carrier identification information and this carrier identification information indication.
5. like the arbitrary described method of claim 1 to 4, it is characterized in that said notification message is a QuickNAK message.
6. a data re-transmission system is characterized in that, comprises Access Network and terminal, wherein:
Said terminal is used for receiving data from Access Network, if detect loss of data, returns notification message and gives Access Network, the data that request retransmission is lost, the carrier identification information of carrying the affiliated carrier wave of data retransmission range information and data retransmission in the said notification message;
Said Access Network; When being used to receive said notification message; According to the said carrier identification information and the data retransmission range information of carrying in the said notification message; Search for the data of having sent on the carrier wave of said carrier identification information indication, obtain data retransmission, send said data retransmission and give said terminal.
7. system as claimed in claim 6 is characterized in that said terminal comprises data wireless links receiver module and message transmission module, wherein:
Said data wireless links receiver module is used for receiving data from said Access Network, whether detects obliterated data;
Said message transmission module; Be used for when said data wireless links receiver module detects loss of data; Return notification message and give Access Network, the data that request retransmission is lost, the carrier identification information of carrying the affiliated carrier wave of data retransmission range information and data retransmission in the said notification message;
Said Access Network comprises data wireless links sending module and message processing module, wherein:
Said data wireless links sending module is used to send data to said terminal; And, according to the indication of said message processing module, send said data retransmission and give said terminal;
Said message processing module; When being used to receive said notification message; According to the said carrier identification information and the data retransmission range information of carrying in the said notification message; Search for the data of having sent on the carrier wave of said carrier identification information indication, obtain data retransmission, indicate said data wireless links sending module to send said data retransmission and give said terminal.
8. system as claimed in claim 7 is characterized in that,
Whether said data wireless links receiver module detects data through following mode and lose: whether the QN sequence number that detects the data that receive on the same carrier wave is continuous, if discontinuous, judgment data is lost.
9. system as claimed in claim 7 is characterized in that,
Said data wireless links sending module also is used for the corresponding relation of said carrier identification information and carrier wave is sent to said terminal.
10. system as claimed in claim 7 is characterized in that,
Said data wireless links sending module also is used to preserve the corresponding relation that has sent data on the carrier wave of said carrier identification information and this carrier identification information indication.
Priority Applications (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2010102621681A CN102377552A (en) | 2010-08-23 | 2010-08-23 | Data retransmission method and system |
| PCT/CN2010/079200 WO2012024870A1 (en) | 2010-08-23 | 2010-11-26 | Method and system for data retransmission |
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| Application Number | Priority Date | Filing Date | Title |
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| CN2010102621681A CN102377552A (en) | 2010-08-23 | 2010-08-23 | Data retransmission method and system |
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| CN102377552A true CN102377552A (en) | 2012-03-14 |
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| CN2010102621681A Pending CN102377552A (en) | 2010-08-23 | 2010-08-23 | Data retransmission method and system |
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| WO (1) | WO2012024870A1 (en) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN108243070A (en) * | 2016-12-23 | 2018-07-03 | 中国移动通信有限公司研究院 | A kind of test method, control node and pressure node |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111431672A (en) * | 2019-01-09 | 2020-07-17 | 中兴通讯股份有限公司 | Data retransmission method and device, storage medium and electronic device |
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| US20040098657A1 (en) * | 2000-04-14 | 2004-05-20 | Ahmad Jalali | Method and an apparatus for a quick retransmission of signals in a communication system |
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| US20100058138A1 (en) * | 2000-01-04 | 2010-03-04 | Magdolna Gerendai | Data Transmission |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN101175017A (en) * | 2006-11-02 | 2008-05-07 | 华为技术有限公司 | Data transmission system and method |
| US8051190B2 (en) * | 2007-01-11 | 2011-11-01 | Via Telecom Co., Ltd. | Nak message transmission with quicknak indication |
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- 2010-08-23 CN CN2010102621681A patent/CN102377552A/en active Pending
- 2010-11-26 WO PCT/CN2010/079200 patent/WO2012024870A1/en active Application Filing
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US20100058138A1 (en) * | 2000-01-04 | 2010-03-04 | Magdolna Gerendai | Data Transmission |
| US20040098657A1 (en) * | 2000-04-14 | 2004-05-20 | Ahmad Jalali | Method and an apparatus for a quick retransmission of signals in a communication system |
| CN1859070A (en) * | 2005-08-29 | 2006-11-08 | 华为技术有限公司 | Repeating method for data based on error feedback mechanism and relative system |
| CN1801687A (en) * | 2005-09-08 | 2006-07-12 | 华为技术有限公司 | Data frame retransmission method and system based on non response mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN108243070A (en) * | 2016-12-23 | 2018-07-03 | 中国移动通信有限公司研究院 | A kind of test method, control node and pressure node |
| CN108243070B (en) * | 2016-12-23 | 2020-01-31 | 中国移动通信有限公司研究院 | test methods, control node and pressure node |
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| WO2012024870A1 (en) | 2012-03-01 |
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Application publication date: 20120314 |