CN1921367A - Method and system for data frame retransmitting based on no-responsion mechanism in multiple carrier DO system - Google Patents
Method and system for data frame retransmitting based on no-responsion mechanism in multiple carrier DO system Download PDFInfo
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- CN1921367A CN1921367A CN 200510093050 CN200510093050A CN1921367A CN 1921367 A CN1921367 A CN 1921367A CN 200510093050 CN200510093050 CN 200510093050 CN 200510093050 A CN200510093050 A CN 200510093050A CN 1921367 A CN1921367 A CN 1921367A
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Abstract
The invention relates to a data frame retransmission method of multi-carrier DO system, based on non-answer mechanism. Wherein, the invention is characterized in that: the wireless access terminal fixes the error frame based on non-answer mechanism; the wireless access terminal based on the mark information of data frame received correctly in the carrier chain of error frame fixes the mark information of error frame; the wireless access terminal transmits the mark information of error frame and the mark information of carrier chain of error frame to the network; the network based on received mark information fixes the data frame needing to retransmit data, to retransmit data. The invention can simplify the treatment that wireless access terminal detects the error frame, to simplify the message between wireless access terminal and the network, to shorten the length of NAK control message, to improve the response speed of wireless access terminal on error frame, improve the data frame retransmission speed, and improve the effective data transmission efficiency of multi-carrier DO system.
Description
Technical field
The present invention relates to the wireless network communication technical field, be specifically related in a kind of multi-carrier DO system method and system for data frame retransmitting based on no-answer mechanism.
Background technology
At present, the 3G mobile communication technology is ripe gradually commercial, 3GPP2 (3G (Third Generation) Moblie collaborative project tissue 2) CDMA2000 1XEV-DO (Evolution, evolution, Data Only only supports Packet data service) competitive wireless access system can further be provided in the coming years.
The 1XEV-DO technology is a kind of technology that is used for the transmitting high speed Packet data service, and the peak-peak speed of every sector carrier frequency support can reach 2.4Mbps, and in version A, peak rate can reach 3.1Mbps.But, want to keep following 10 years or the competitiveness in decades, need to introduce new wireless access technology.
At present, industry is reached preliminary unanimity with regard to the technology of the eating dishes without rice or wine evolution of 3GPP2, the technology of the eating dishes without rice or wine evolution that is about to 3GPP2 is divided into 2 stages and carries out, stage one, employing multi-carrier DO technology, do not change under the situation of physical layer in the assurance of trying one's best,, obtain higher peak value digit rate by the upper layer software (applications) upgrading, guarantee backward compatibility, the deadline of this standard roughly was the end of the year 2005; Stage two, the more advanced new technology of introducing are the long-term evolution plans of 3GPP2.
RLP (Radio Link Protocol radio link protocol) guarantees the grouped data link layer protocol of transmission as possible in the 1XEV-DO system, it can provide more reliable transfer of data for upper strata such as TCP layer, thereby the error burst that the shielding wireless side is brought disturbs.
RLP is a kind of agreement that provides error detection and Frame to retransmit based on NAK (non-replying).When data receiver detects admission control is arranged in the transmission course, then can retransmit the Frame of losing by NAK control messages request msg transmitting terminal.Data sending terminal carries out data re-transmission according to the first byte sequence number of the obliterated data that carries in the NAK control messages and the length of obliterated data.
In multi-carrier DO system, may exist many forward carriers channels to carry out the phenomenon of data frame transfer simultaneously, so, need make amendment to RLP, to guarantee the validity and the reliability of Data Receiving.
At present, the implementation method schematic diagram that retransmits based on the Frame of single RLP (single-RLP) example as shown in Figure 1.
Among Fig. 1, network side is safeguarded single RLP example, the RLP example is packed the upper-layer packet data, and be responsible for assigning the SAR_Seq sequence number continuous for each RLP, then, the RLP bag that will have continuous SAR_Seq sequence number is assigned on the different carrier links according to dispatching algorithm and sends the ARQ_Seq sequence number that each carrier link is responsible for assigning continuous to the RLP that transmits on it.
The wireless access terminal detects according to the continuity of the ARQ_Seq sequence number of each RLP bag whether wrong frame produces on this carrier link, the RLP bag that the SAR_Seq sequence number of RLP bag then is used for receiving on a plurality of carrier links is resequenced, and handles so that be submitted to the upper strata.
If it is discontinuous that the wireless access terminal detects on certain carrier link the ARQ_Seq sequence number, illustrate that then wrong frame produces on this carrier link, the wireless access terminal need resend by the RLP bag of mistake frame by NAK control messages request network side.
Below by two concrete examples present data frame retransmission method based on no-answer mechanism is elaborated.
The SAR_Seq sequence number and the ARQ_Seq sequence number of the RLP bag that example 1, wireless access terminal receive from carrier link 1 and carrier link 2 respectively are as follows:
Carrier link 1, promptly the Link1 carrier link 2, i.e. Link2
<ARQ_Seq，SAR_Seq> <ARQ_Seq，SAR_Seq>
＜1,5〉--correct reception＜1,6〉--the correct reception
＜2,8〉--also confiscate
＜3,9〉--correct reception＜3,10〉--also confiscate
The ARQ_Seq sequence number of the RLP bag that the wireless access terminal receives from carrier link 1 is respectively 1,3, and the ARQ_Seq sequence number of the RLP bag that the wireless access terminal receives from carrier link 2 is 1; Because the ARQ_Seq sequence number of RLP bag is discontinuous in the carrier link 1,, need the request network side to retransmit this RLP bag so the wireless access terminal detects wrong frame and produces.
The SAR_Seq sequence number of the RLP bag lost need further be determined in the wireless access terminal after defining the RLP bag that need to retransmit, at present, the wireless access terminal determines that the method for the SAR_Seq sequence number of the RLP bag lost is:
The wireless access terminal determines that the SAR_Seq sequence number of its RLP that receives at last from two carrier links bag is respectively 6 and 9, so, the SAR_Seq sequence number of the RLP bag that the wireless access terminal is determined to lose is 7 and 8, though the SAR_Seq sequence number is that 8 RLP bag also may aloft transmit.
The wireless access terminal is after the SAR_Seq sequence number of the RLP bag of determining to lose, assembling NAK control messages also sends it to network side, the information that needs in the NAK control messages to comprise is: the SAR_Seq sequence number 7 and 8 of the RLP bag of losing, the SAR_Seq sequence number 6 of last RLP bag that the SAR_Seq sequence number 9 of last 1 RLP bag that the wireless access terminal receives on carrier link 1, wireless access terminal receive on carrier link 2.
After network side receives the NAK control messages, determine according to the tabulation of self maintained the RLP bag of losing sends on which carrier link, as determining that the SAR_Seq sequence number is RLP bag transmission on carrier link 1 of 7, the SAR_Seq sequence number is RLP bag transmission on carrier link 2 of 8, the SAR_Seq sequence number 9 that last 1 RLP that network side receives on carrier link 1 according to the wireless access terminal that provides in the NAK control messages wraps, can determine the SAR_Seq sequence number be 7 RLP bag by the mistake frame, need retransmit; The SAR_Seq sequence number 6 of last 1 RLP bag that network side receives on carrier link 2 according to the wireless access terminal that provides in the NAK control messages can determine that the SAR_Seq sequence number is that 8 RLP bag does not also receive, and by the mistake frame, does not need to retransmit.
Network side is that 7 RLP bag transfers to the wireless access terminal again with the SAR_Seq sequence number behind the RLP bag that determine to need retransmits, thereby solved in the multi-carrier DO system problem based on RLP forward data stable transfer.
The SAR_Seq sequence number and the ARQ_Seq sequence number of the RLP bag that example 2, wireless access terminal receive from carrier link 1 and carrier link 2 are as follows:
Carrier link 1, promptly the Link1 carrier link 2, i.e. Link2
<ARQ_Seq，SAR_Seq> <ARQ_Seq，SAR_Seq>
＜1,5〉--correct reception＜1,6〉--the correct reception
＜2,7〉--the correct reception
＜3,8〉--the correct reception
＜2,10〉--the correct reception
＜5,11〉--correct reception＜3,12〉--also confiscate
The ARQ_Seq sequence number of the RLP bag that the wireless access terminal receives from carrier link 1 is respectively 1,2,3,5, and the ARQ_Seq sequence number of the RLP bag that the wireless access terminal receives from carrier link 2 is 1,2,3; Because the ARQ_Seq sequence number of RLP bag is discontinuous in the carrier link 1,, need the request network side to retransmit this RLP bag so the wireless access terminal detects wrong frame and produces.
The SAR_Seq sequence number of the RLP bag lost need further be determined in the wireless access terminal after defining the RLP bag that need to retransmit.The wireless access terminal determines that respectively the SAR_Seq sequence number of the RLP bag that it receives from two carrier links at last is respectively 10 and 11, and the SAR_Seq sequence number to be 8 RLP bag correctly received, so, the SAR_Seq sequence number 9 of the RLP bag that the wireless access terminal is determined to lose.
The wireless access terminal is after the SAR_Seq sequence number of the RLP bag of determining to lose, assembling NAK control messages also sends it to network side, the information that needs in the NAK control messages to comprise is: the SAR_Seq sequence number 9 of the RLP bag of losing, the SAR_Seq sequence number 10 of last RLP bag that the SAR_Seq sequence number 11 of last 1 RLP bag that the wireless access terminal receives on carrier link 1, wireless access terminal receive on carrier link 2.
After network side receives the NAK control messages, determine according to the tabulation of self maintained the RLP bag of losing sends on which carrier link, as determining that the SAR_Seq sequence number is RLP bag transmission on carrier link 1 of 9, the SAR_Seq sequence number 11 that last 1 RLP that network side receives on carrier link 1 according to the wireless access terminal that provides in the NAK control messages wraps, can determine the SAR_Seq sequence number be 9 RLP bag by the mistake frame, need retransmit.
Network side is that 9 RLP bag transfers to the wireless access terminal again with the SAR_Seq sequence number behind the RLP bag that determine to need retransmits, thereby solved in the multi-carrier DO system problem based on RLP forward data stable transfer.
From foregoing description as can be known, in the existing data frame retransmission method based on no-answer mechanism, terminal equipment need be determined by the mistake frame according to its RLP that receives from a plurality of carrier links bag, under the more situation of forward carriers number of links, increased the judgement complexity of wireless access terminal greatly, the wireless access terminal can not be responded fast to the Frame of losing lost data frames.And, carried the SAR_Seq sequence number of its RLP that from each carrier link, receives at last bag in the NAK control messages of wireless access terminal assembling, the length of NAK control messages is directly proportional with carrier link quantity, in actual applications, the SAR_Seq sequence number generally all is 22bits, when carrier link quantity increases, has increased the length of NAK control messages greatly, thereby reduced the efficiency of transmission of valid data, reduced data throughout.
Summary of the invention
The objective of the invention is to, data frame retransmission method based on no-answer mechanism is provided in a kind of multi-carrier DO system, simplified the wireless access terminal and detected by the processing procedure of mistake frame, simplified the message content that transmits between wireless access terminal and the network side, realized improving the wireless access terminal to by the response speed of mistake frame, improve the Frame retransmission efficiency, improve the purpose of valid data transmission efficiency in the multi-carrier DO system.
For achieving the above object, based on the data frame retransmission method of no-answer mechanism, comprising in a kind of multi-carrier DO system provided by the invention:
The quilt mistake frame of appearance based on no-answer mechanism determined in a, wireless access terminal;
B, wireless access terminal are determined by the identification information of mistake frame according to this identification information by the Frame that correctly receives in the carrier link of mistake frame place;
C, wireless access terminal transfer to network side with described by the identification information of mistake frame with by the identification information of the carrier link at mistake frame place;
D, network side determine that according to the identification information of its reception needs carry out the Frame of data re-transmission, and the line data frame of going forward side by side retransmits.
Described step a specifically comprises:
The quilt mistake frame of appearance based on no-answer mechanism determined in the wireless access terminal when the sequence number of Frame in carrier link of the carrier link continuous dispensing of the Frame that detects its reception is discontinuous.
The identification information of Frame is among the described step b: network side be all Frames of transmitting on each carrier link of wireless access terminal distribute have a successional Frame sequence number;
And described step b specifically comprises:
That the wireless access terminal correctly receives from the carrier link at quilt mistake frame place according to it, definite by the Frame serial number information of mistake frame with described Frame sequence number by two adjacent Frames of mistake frame.
Described Frame serial number information by the mistake frame is: the Frame serial number range.
Described step c specifically comprises:
The wireless access terminal is assembled the non-control messages of replying according to described by the Frame serial number range of mistake frame with by the identification information of the carrier link at mistake frame place, and transmits it to network side, and the request network side retransmits by the mistake frame.
Described steps d specifically comprises:
Network side according to Frame send tabulation determine with its reception by the carrier link identification information in the list item of the identification information coupling of mistake frame, and judge whether the carrier link identification information in the described coupling list item identical with the carrier link identification information that it receives;
If identical, this is missed the Frame that frame is defined as carrying out data re-transmission, the line data frame of going forward side by side retransmits;
If inequality, determine that this is not needed to carry out data re-transmission by the mistake frame.
Described no-answer mechanism is: based on the no-answer mechanism of default grouping application or based on the no-answer mechanism of default multithread grouping or based on the no-answer mechanism that strengthens the multithread grouping.
The identification information of described Frame comprises: the SAR_Seq sequence number, and the sequence number of the Frame of described carrier link continuous dispensing in carrier link comprises: the ARQ_Seq sequence number.
The present invention also provides in a kind of multi-carrier DO system based on the Frame retransmission system of no-answer mechanism, comprising:
Repeat requests end: when determining that the quilt of appearance based on no-answer mechanism misses frame, determine by the identification information of mistake frame according to this identification information by the Frame that correctly receives in the carrier link of mistake frame place, and with described by the identification information of mistake frame with transferred to Frame by the identification information of the carrier link at mistake frame place and retransmit and hold;
Frame retransmits end: determine that according to the identification information of its reception needs carry out the Frame of data re-transmission, and it is retransmitted to the repeat requests end.
Described repeat requests end comprises: detect by the mistake frame module, determine identification information module, assembling NAK message module; And described Frame retransmits end and comprises: determine data retransmission frame module and retransmission module;
Detect by the mistake frame module: the sequence number of Frame in carrier link of the carrier link continuous dispensing of the Frame that the detection wireless access terminal receives, when the definite sequence number of described Frame in carrier link is discontinuous, determine the quilt mistake frame of appearance, and notice is determined the identification information module based on no-answer mechanism;
Determine the identification information module: determine by the identification information of the carrier link at mistake frame place according to described notice, and according to the wireless access terminal from correctly received the carrier link at mistake frame place, determine by the Frame serial number range of mistake frame with described Frame sequence number by two adjacent before and after mistake frame Frames, and transfer to the identification information of described carrier link with by the Frame serial number range of mistake frame and to assemble the NAK message module;
Assembling NAK message module:, and transmit it to and determine the data retransmission frame module according to the identification information of the carrier link of its reception with by the Frame serial number range assembling NAK control messages of mistake frame;
Determine the data retransmission frame module: according to the Frame of its storage send tabulation determine with its reception by the carrier link identification information in the Frame sequence number coupling list item of mistake frame, and the carrier link identification information of the carrier link identification information in described coupling list item and its reception is when identical, this is defined as carrying out the Frame of data re-transmission by the mistake frame, and the Frame sequence number of will quilt missing frame transfers to retransmission module;
Retransmission module: according to the Frame sequence number of its reception with corresponding data frame transfer to the wireless access terminal.
Description by technique scheme as can be known, wireless access terminal of the present invention is when determining to occur by the mistake frame, do not need to judge the Frame reception condition of other carrier links, directly just can be judged by the identification information of mistake frame by the correct Frame that receives on the carrier link at mistake frame place from this, simplify the wireless access terminal greatly and detected by the processing procedure of mistake frame according to it; By being missed the Frame serial number range message transmission of frame to network side by the identification information of the carrier link at mistake frame place and quilt, network side is by carrying out the list item coupling with the Frame serial number range information by the mistake frame of its reception, and whether the identification information of identification information and the carrier link of coupling in the list item of carrier link of judging its reception is identical need to determine the Frame that retransmits, under the situation of the complexity that does not increase network side judgement retransmitting data frame processing procedure, simplified the message content of wireless access terminal and network side transmission greatly, the length of NAK control messages is effectively reduced, and the quantity of the length of NAK control messages and carrier link is irrelevant; Thereby by technical scheme provided by the invention realized improving the wireless access terminal to by the response speed of mistake frame, improve the Frame retransmission efficiency, improve the purpose of valid data transmission efficiency in the multi-carrier DO system.
Description of drawings
Fig. 1 is the realization schematic diagram that retransmits based on the Frame of no-answer mechanism of the prior art;
Fig. 2 is based on the Frame retransmission system schematic diagram of no-answer mechanism in the multi-carrier DO system of the present invention.
Embodiment
The core of method and system of the present invention is: the quilt mistake frame of appearance based on no-answer mechanism determined in the wireless access terminal, the wireless access terminal is determined by the identification information of mistake frame according to this identification information by the Frame that correctly receives in the carrier link of mistake frame place, the wireless access terminal transfers to network side with described by the identification information of mistake frame with by the identification information of the carrier link at mistake frame place, network side determines that according to the identification information of its reception needs carry out the Frame of data re-transmission, and the line data frame of going forward side by side retransmits.
Based on core concept of the present invention technical scheme provided by the invention is further described below.
When based on the Frame of no-answer mechanism when network side transfers to the wireless access terminal, can carry two identification informations, one is that network side is all sequence numbers with continuity, succession that need transfer to the Frame distribution of this wireless access terminal, as the SAR_Seq sequence number; Another is the sequence number with continuity, succession of each carrier link for the Frame distribution of its transmission, as the ARQ_Seq sequence number; For ease of describing, network side for need transferring to the sequence number that the Frame of this wireless access terminal distributes, all is called the Frame sequence number here, each carrier link is called the sequence number of Frame in carrier link for the sequence number of the Frame distribution of its transmission.
The wireless access terminal receives the Frame that the network side transmission comes from each carrier link, and according to the sequence number of Frame in carrier link determine whether to occur based on no-answer mechanism by the mistake frame, be the wireless access terminal when the sequence number of Frame in carrier link of determining its Frame that receives from certain bar carrier link is discontinuous, the wireless access terminal is determined to occur in this carrier link by the mistake frame.
Occur in determining a carrier link by behind the mistake frame, the wireless access terminal should be determined by the Frame sequence number of mistake frame.Among the present invention the wireless access terminal determine by the concrete grammar of the Frame sequence number of mistake frame be: the wireless access terminal determine with by the Frame sequence number of Frame adjacent before and after the mistake frame, the wireless access terminal is defined as the Frame sequence number of vacancy between these two data frame numbers by the Frame sequence number of mistake frame, the Frame sequence number of vacancy can be expressed as the form from XX to YY, be respectively 7 as Frame sequence number with the Frame that is missed the adjacent correct reception in frame front and back, 9, then the Frame sequence number of vacancy is 8, like this, Frame sequence number by the mistake frame is 8, can only be expressed as 8, also can be expressed as from 8 to 8; Be respectively 7,10 for another example with by the Frame sequence number of the Frame of correct reception adjacent before and after the mistake frame, then the Frame sequence number of vacancy is 8,9, and like this, the Frame sequence number of being missed frame is 8,9, can be expressed as 8 to 9.
From foregoing description as can be seen, the wireless access terminal does not need the Frame sequence number of the Frame that receives with reference to the wireless access terminal among the present invention from other carrier link when determining by the Frame sequence number of mistake frame.Only promptly can determine easily by the Frame sequence number of mistake frame according to the Frame sequence number of its correct Frame that receives from the carrier link at quilt mistake frame place, simplified the wireless access terminal to by the processing procedure of mistake frame, improved the response speed of wireless access terminal quilt mistake frame.
The wireless access terminal is after having determined by the Frame serial number range of mistake frame, need transfer to network side with this Frame serial number range with by the identification information of the place carrier link of mistake frame, the wireless access terminal can transfer to network side with being carried in the NAK control messages by the Frame sequence number of mistake frame with by the identification information of the place carrier link of mistake frame, continuous precedent, if the Frame serial number range by the mistake frame is 8 to 8, and the carrier link by mistake frame place is designated 1, then carry 8 to 8 and 1 in the NAK control messages, the Frame sequence number that does not occur Frame in other carrier link in the NAK control messages, and the length of NAK control messages and the quantity of carrier link are irrelevant, the length of NAK control messages depends on the length of Frame sequence number and the length of carrier link sign, the length of Frame sequence number is 22bit in actual applications, the length of carrier link sign is 4bit, no matter the quantity of carrier link how, Frame identification information in the NAK control messages and carrier link sign take 48bit all the time.
From foregoing description as can be seen, the wireless access terminal is to network side transmission NAK control messages the time, do not need the Frame sequence number of its Frame that receives at last from each carrier link all is carried in the NAK control messages, simplified the NAK control messages, shorten the length of NAK control messages, improved the efficiency of transmission of valid data in the multi-carrier DO system.
Network side obtains from the NAK control messages of its reception by the Frame serial number range of mistake frame with by the sign of mistake frame place carrier link, and will be mated by the Frame transmission tabulation of each Frame sequence number in the Frame serial number range of mistake frame and the storage of network side record, obtain mating list item.Whether network side identifies the carrier link in the carrier link in this coupling list item sign and the NAK control messages identically judges, if determine that both are identical, determine that then this is the Frame that need carry out data re-transmission by the mistake frame, promptly this quilt mistake frame is real quilt mistake frame, if determine that both are inequality, determine that then this is transmitted by other carrier link by the mistake frame, this is not needed to carry out data re-transmission by the mistake frame, and promptly this quilt mistake frame is not real quilt mistake frame.
From foregoing description as can be seen, the present invention improve the wireless access terminal determine by the method for the Frame sequence number of mistake frame, and the NAK control messages in after the loaded information, network side judges that the method that need carry out the Frame of data re-transmission does not have big change, the more important thing is, the present invention does not have therefore to increase the complexity that network side is judged the Frame method that need carry out data re-transmission, thereby makes method applicability of the present invention good.
No-answer mechanism is among the present invention: based on the no-answer mechanism of default grouping application or based on the no-answer mechanism of default multithread grouping or based on the no-answer mechanism that strengthens the multithread grouping.
Below with in the background technology based on two in the no-answer mechanism of the single RLP concrete examples that are applied as, method of the present invention is described.
The SAR_Seq sequence number and the ARQ_Seq sequence number of the RLP bag that example 3, wireless access terminal receive from carrier link 1 and carrier link 2 are as follows:
Carrier link 1, promptly the Link1 carrier link 2, i.e. Link2
<ARQ_Seq，SAR_Seq> <ARQ_Seq，SAR_Seq>
＜1,5〉--correct reception＜1,6〉--the correct reception
＜2,8〉--also confiscate
＜3,9〉--correct reception＜3,10〉--also confiscate
The ARQ_Seq sequence number of the RLP bag that the wireless access terminal receives from carrier link 1 is respectively 1,3, and the ARQ_Seq sequence number of the RLP bag that the wireless access terminal receives from carrier link 2 is 1,2,3; Because the ARQ_Seq sequence number of RLP bag is discontinuous in the carrier link 1,, need the request network side to retransmit this RLP bag so the wireless access terminal detects wrong frame and produces.
The SAR_Seq serial number range of the RLP bag lost need further be determined in the wireless access terminal after defining the RLP bag that need to retransmit.The wireless access terminal determines that SAR_Seq sequence number of its correct that receive, adjacent with the RLP bag of losing two RLP bags from carrier link 1 is respectively 5 and 9, so the wireless access terminal determines that directly the SAR_Seq serial number range of the RLP bag lost is from 6 to 8.
The wireless access terminal is behind the SAR_Seq serial number range of the RLP bag of determining to lose, assembling NAK control messages also sends it to network side, the information that needs in the NAK control messages to comprise is: the SAR_Seq serial number range of the RLP bag of losing, from 6 to 8, the identification information of carrier link 1.
After network side receives the NAK control messages, the RLP bag of determining self record storage sends in the tabulation respectively and SAR_Seq sequence number 6, the list item of 7 and 8 couplings, because being 6 and 8 RLP bag, the SAR_Seq sequence number sends by carrier link 2, so, respectively with SAR_Seq sequence number 6, carrier link sign in the list item of 8 couplings should be the sign of carrier link 2, like this, the sign of the carrier link 1 in the NAK control messages and SAR_Seq sequence number 6, carrier link sign in the list item of 8 couplings is inequality, and network side is determined SAR_Seq sequence number 6,8 RLP bag does not need to carry out data re-transmission.Equally, because being 7 RLP bag, the SAR_Seq sequence number sends by carrier link 1, so, should be the sign of carrier link 1 with the carrier link sign in the list item of SAR_Seq sequence number 7 coupling, like this, carrier link sign in the list item of the sign of the carrier link 1 in the NAK control messages and SAR_Seq sequence number 7 couplings is identical, and network side determines that the RLP bag of SAR_Seq sequence number 7 by the mistake frame, need carry out data re-transmission.
Network side is that 7 RLP bag transfers to the wireless access terminal again with the SAR_Seq sequence number behind the RLP bag that determine to need retransmits, thereby solved in the multi-carrier DO system problem based on RLP forward data stable transfer.
From example 3 as can be seen, the wireless access terminal does not need the SAR_Seq sequence number with reference to its RLP that receives bag among the present invention from carrier link 2, only promptly can determine quickly and easily by the SAR_Seq serial number range of mistake frame, simplify the processing procedure of wireless access terminal quilt mistake frame according to the SAR_Seq sequence number of its correct RLP bag that receives from carrier link 1.The information that comprises in the NAK control messages in the example 1 of prior art is: the SAR_Seq sequence number 7 of the RLP bag of losing, the SAR_Seq sequence number 6 of last RLP bag that the SAR_Seq sequence number 9 of last 1 RLP bag that the wireless access terminal receives on carrier link 1, wireless access terminal receive on carrier link 2; And the information that comprises in the NAK control messages of the present invention is: the SAR_Seq serial number range from 6 to 8 of the RLP bag of losing, the identification information of carrier link 1; Because the carrier link identification information generally takies 4bit, the SAR_Seq sequence number generally takies 22bit, so, the length of the NAK message of the example 1 of prior art is at least 66bit, and along with the growth of carrier link quantity, the length of NAK message also can increase with the multiple of 22bit, and the length of NAK control messages is at least 48bit among the present invention, and the quantity of message-length and carrier link is irrelevant, thereby has simplified the NAK control messages, has improved the efficiency of transmission of valid data in the multi-carrier DO system.
The SAR_Seq sequence number and the ARQ_Seq sequence number of the RLP bag that example 4, wireless access terminal receive from carrier link 1 and carrier link 2 are as follows:
Carrier link 1, promptly the Link1 carrier link 2, i.e. Link2
<ARQ_Seq，SAR_Seq> <ARQ_Seq，SAR_Seq>
＜1,5〉--correct reception＜1,6〉--the correct reception
＜2,7〉--the correct reception
＜3,8〉--the correct reception
＜2,10〉--the correct reception
＜5,11〉--correct reception＜3,12〉--also confiscate
The ARQ_Seq sequence number of the RLP bag that the wireless access terminal receives from carrier link 1 is respectively 1,2,3,5, and the ARQ_Seq sequence number of the RLP bag that the wireless access terminal receives from carrier link 2 is 1,2,3; Because the ARQ_Seq sequence number of RLP bag is discontinuous in the carrier link 1,, need the request network side to retransmit this RLP bag so the wireless access terminal detects wrong frame and produces.
The SAR_Seq serial number range of the RLP bag lost need further be determined in the wireless access terminal after defining the RLP bag that need to retransmit.The wireless access terminal determines that its SAR_Seq sequence number that correct two that receive, adjacent with the RLP bag of losing RLP wrap from carrier link 1 is respectively 8 and 11, so the SAR_Seq serial number range of the RLP bag that the wireless access terminal is directly determined to lose is from 9 to 10.
The wireless access terminal is behind the SAR_Seq serial number range of the RLP bag of determining to lose, assembling NAK control messages also sends it to network side, the information that needs in the NAK control messages to comprise is: the SAR_Seq serial number range of the RLP bag of losing, from 9 to 10, the identification information of carrier link 1.
After network side receives the NAK control messages, the RLP bag of determining self record storage sends in the tabulation respectively the list items with SAR_Seq sequence number 9 and 10 couplings, because being 10 RLP bag, the SAR_Seq sequence number sends by carrier link 2, so, should be the sign of carrier link 2 with the carrier link sign in the list item of SAR_Seq sequence number 10 coupling, like this, carrier link sign in the list item of the sign of the carrier link 1 in the NAK control messages and SAR_Seq sequence number 10 couplings is inequality, and network side determines that the RLP bag of SAR_Seq sequence number 10 does not need to carry out data re-transmission.Equally, because being 9 RLP bag, the SAR_Seq sequence number sends by carrier link 1, so, should be the sign of carrier link 1 with the carrier link sign in the list item of SAR_Seq sequence number 9 coupling, like this, carrier link sign in the list item of the sign of the carrier link 1 in the NAK control messages and SAR_Seq sequence number 9 couplings is identical, and network side determines that the RLP bag of SAR_Seq sequence number 9 by the mistake frame, need carry out data re-transmission.
Network side is that 9 RLP bag transfers to the wireless access terminal again with the SAR_Seq sequence number behind the RLP bag that determine to need retransmits, thereby solved in the multi-carrier DO system problem based on RLP forward data stable transfer.
From example 4 as can be seen, the wireless access terminal does not need the SAR_Seq sequence number with reference to its RLP that receives bag among the present invention from carrier link 2, only promptly can determine quickly and easily by the SAR_Seq serial number range of mistake frame, simplify the processing procedure of wireless access terminal quilt mistake frame according to the SAR_Seq sequence number of its correct RLP bag that receives from carrier link 1.The information that comprises in the NAK control messages in the example 2 of prior art is: the SAR_Seq sequence number 9 of the RLP bag of losing, the SAR_Seq sequence number 10 of last RLP bag that the SAR_Seq sequence number 11 of last 1 RLP bag that the wireless access terminal receives on carrier link 1, wireless access terminal receive on carrier link 2; And the information that comprises in the NAK control messages of the present invention is: the SAR_Seq serial number range from 9 to 10 of the RLP bag of losing, the identification information of carrier link 1; Because the carrier link identification information generally takies 4bit, the SAR_Seq sequence number generally takies 22bit, so, the length of the NAK message of the example 2 of prior art is at least 66bit, and along with the growth of carrier link quantity, the length of NAK message also can increase with the multiple of 22bit, and the length of NAK control messages is at least 48bit among the present invention, and the quantity of message-length and carrier link is irrelevant, thereby has simplified the NAK control messages, has improved the efficiency of transmission of valid data in the multi-carrier DO system.
In the multi-carrier DO system provided by the invention based on the Frame retransmission system of no-answer mechanism as shown in Figure 2.
Among Fig. 2, system of the present invention mainly comprises: repeat requests end and Frame retransmit end.The repeat requests end is: wireless access terminal, Frame retransmit end and are positioned at network side.
The repeat requests end is mainly used in when determining that the quilt of appearance based on no-answer mechanism misses frame, determine the identification information of quilt mistake frame according to this identification information, and will transfer to Frame re-transmission end by the identification information of mistake frame with by the identification information of the carrier link at mistake frame place by the Frame that correctly receives in the carrier link of mistake frame place.
Frame retransmits to hold to be mainly used in according to the identification information of its reception determines that needs carry out the Frame of data re-transmission, and it is retransmitted to the repeat requests end.
The major function of repeat requests end is by detecting by the mistake frame module, determining that identification information module, assembling NAK message module realize.The major function that Frame retransmits end is realized by definite data retransmission frame module and retransmission module.
Detect the sequence number of Frame in carrier link that is mainly used in the carrier link continuous dispensing that detects the Frame that the wireless access terminal receives from each carrier link by the mistake frame module, when the sequence number of Frame in carrier link in determining certain carrier link is discontinuous, determine the quilt mistake frame of appearance based on no-answer mechanism, and notice is determined the identification information module, the ARQ_Seq sequence number that the RLP that receives from carrier link 1 as the wireless access terminal wraps was respectively 1,2,3,5 o'clock, determined the RLP bag of active.
Determine that the identification information module is mainly used in the identification information of being determined the carrier link at quilt mistake frame place by the notice of mistake frame module according to detecting, and correctly receive from the carrier link at quilt mistake frame place according to the wireless access terminal, with the Frame serial number range of being determined quilt mistake frame by the Frame sequence number of two adjacent before and after mistake frame Frames, receive from carrier link 1 as the wireless access terminal, the SAR_Seq sequence number of two the RLPs bags adjacent with the RLP that loses bag is respectively 8 and 11, determines that then the identification information module determines that the SAR_Seq serial number range of the RLP bag lost is from 9 to 10.After having determined, determine that the identification information module transfers to assembling NAK message module with the identification information of carrier link with by the Frame serial number range of mistake frame by the Frame serial number range of mistake frame.
Assembling NAK message module is mainly used in according to the identification information of the carrier link of its reception with by the Frame serial number range assembling NAK control messages of mistake frame, and transmits it to definite data retransmission frame module; Be carried on to transfer to the NAK control messages as identification information and determine the data retransmission frame module SAR_Seq sequence number from 9 to 10 and carrier link 1.
Determine the data retransmission frame module be mainly used in according to the Frame of its storage send tabulation determine with its reception by the carrier link identification information in each the Frame sequence number coupling list item in the Frame serial number range of mistake frame, and when the carrier link identification information of the carrier link identification information of coupling in the list item and its reception is identical, this is defined as carrying out the Frame of data re-transmission by the mistake frame, and the Frame sequence number of will quilt missing frame transfers to retransmission module.The SAR_Seq sequence number was that 10 the corresponding carrier link of RLP bag is a carrier link 2 during transmission was tabulated as the setting data frame, and the SAR_Seq sequence number was that 9 the corresponding carrier link of RLP bag is a carrier link 1 during Frame sent and tabulates, because the information in the NAK control messages is: the sign of carrier link 1, SAR_Seq sequence number 9 and 10, therefore, the RLP bag that can determine SAR_Seq sequence number 9 is by the mistake frame, need carry out data re-transmission, determine that the data retransmission frame module transfers to retransmission module with SAR_Seq sequence number 9.
Retransmission module is mainly used in according to the Frame sequence number of its reception such as SAR_Seq sequence number 9, and corresponding Frame is transferred to the wireless access terminal again.
Though described the present invention by embodiment, those of ordinary skills know, the present invention has many distortion and variation and do not break away from spirit of the present invention, and the claim of application documents of the present invention comprises these distortion and variation.
Claims (10)
1, in a kind of multi-carrier DO system based on the data frame retransmission method of no-answer mechanism, it is characterized in that, comprising:
The quilt mistake frame of appearance based on no-answer mechanism determined in a, wireless access terminal;
B, wireless access terminal are determined by the identification information of mistake frame according to this identification information by the Frame that correctly receives in the carrier link of mistake frame place;
C, wireless access terminal transfer to network side with described by the identification information of mistake frame with by the identification information of the carrier link at mistake frame place;
D, network side determine that according to the identification information of its reception needs carry out the Frame of data re-transmission, and the line data frame of going forward side by side retransmits.
2, in a kind of multi-carrier DO system as claimed in claim 1 based on the data frame retransmission method of no-answer mechanism, it is characterized in that described step a specifically comprises:
The quilt mistake frame of appearance based on no-answer mechanism determined in the wireless access terminal when the sequence number of Frame in carrier link of the carrier link continuous dispensing of the Frame that detects its reception is discontinuous.
3, in a kind of multi-carrier DO system as claimed in claim 1 based on the data frame retransmission method of no-answer mechanism, it is characterized in that the identification information of Frame is among the described step b: network side be all Frames of transmitting on each carrier link of wireless access terminal distribute have a successional Frame sequence number;
And described step b specifically comprises:
That the wireless access terminal correctly receives from the carrier link at quilt mistake frame place according to it, definite by the Frame serial number information of mistake frame with described Frame sequence number by two adjacent Frames of mistake frame.
4, in a kind of multi-carrier DO system as claimed in claim 3 based on the data frame retransmission method of no-answer mechanism, it is characterized in that, described by the mistake frame the Frame serial number information be: the Frame serial number range.
5, in a kind of multi-carrier DO system as claimed in claim 4 based on the data frame retransmission method of no-answer mechanism, it is characterized in that described step c specifically comprises:
The wireless access terminal is assembled the non-control messages of replying according to described by the Frame serial number range of mistake frame with by the identification information of the carrier link at mistake frame place, and transmits it to network side, and the request network side retransmits by the mistake frame.
6, in a kind of multi-carrier DO system as claimed in claim 1 based on the data frame retransmission method of no-answer mechanism, it is characterized in that described steps d specifically comprises:
Network side according to Frame send tabulation determine with its reception by the carrier link identification information in the list item of the identification information coupling of mistake frame, and judge whether the carrier link identification information in the described coupling list item identical with the carrier link identification information that it receives;
If identical, this is missed the Frame that frame is defined as carrying out data re-transmission, the line data frame of going forward side by side retransmits;
If inequality, determine that this is not needed to carry out data re-transmission by the mistake frame.
7, as in the described a kind of multi-carrier DO system of arbitrary claim in the claim 1 to 6 based on the data frame retransmission method of no-answer mechanism, it is characterized in that described no-answer mechanism is: based on the no-answer mechanism of default grouping application or based on the no-answer mechanism of default multithread grouping or based on the no-answer mechanism that strengthens the multithread grouping.
8, as in the described a kind of multi-carrier DO system of arbitrary claim in the claim 2 to 6 based on the data frame retransmission method of no-answer mechanism, it is characterized in that, the identification information of described Frame comprises: the SAR_Seq sequence number, and the sequence number of the Frame of described carrier link continuous dispensing in carrier link comprises: the ARQ_Seq sequence number.
9, in a kind of multi-carrier DO system based on the Frame retransmission system of no-answer mechanism, it is characterized in that, comprising:
Repeat requests end: when determining that the quilt of appearance based on no-answer mechanism misses frame, determine by the identification information of mistake frame according to this identification information by the Frame that correctly receives in the carrier link of mistake frame place, and with described by the identification information of mistake frame with transferred to Frame by the identification information of the carrier link at mistake frame place and retransmit and hold;
Frame retransmits end: determine that according to the identification information of its reception needs carry out the Frame of data re-transmission, and it is retransmitted to the repeat requests end.
10, in a kind of multi-carrier DO system as claimed in claim 9 based on the Frame retransmission system of no-answer mechanism, it is characterized in that described repeat requests end comprises: detect by the mistake frame module, determine identification information module, assembling NAK message module; And described Frame retransmits end and comprises: determine data retransmission frame module and retransmission module;
Detect by the mistake frame module: the sequence number of Frame in carrier link of the carrier link continuous dispensing of the Frame that the detection wireless access terminal receives, when the definite sequence number of described Frame in carrier link is discontinuous, determine the quilt mistake frame of appearance, and notice is determined the identification information module based on no-answer mechanism;
Determine the identification information module: determine by the identification information of the carrier link at mistake frame place according to described notice, and according to the wireless access terminal from correctly received the carrier link at mistake frame place, determine by the Frame serial number range of mistake frame with described Frame sequence number by two adjacent before and after mistake frame Frames, and transfer to the identification information of described carrier link with by the Frame serial number range of mistake frame and to assemble the NAK message module;
Assembling NAK message module:, and transmit it to and determine the data retransmission frame module according to the identification information of the carrier link of its reception with by the Frame serial number range assembling NAK control messages of mistake frame;
Determine the data retransmission frame module: according to the Frame of its storage send tabulation determine with its reception by the carrier link identification information in the Frame sequence number coupling list item of mistake frame, and the carrier link identification information of the carrier link identification information in described coupling list item and its reception is when identical, this is defined as carrying out the Frame of data re-transmission by the mistake frame, and the Frame sequence number of will quilt missing frame transfers to retransmission module;
Retransmission module: according to the Frame sequence number of its reception with corresponding data frame transfer to the wireless access terminal.
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| Application Number | Priority Date | Filing Date | Title |
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| CN200510093050A CN1921367B (en) | 2005-08-25 | 2005-08-25 | Method and system for data frame retransmitting based on no-responsion mechanism in multiple carrier DO system |
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| CN200510093050A CN1921367B (en) | 2005-08-25 | 2005-08-25 | Method and system for data frame retransmitting based on no-responsion mechanism in multiple carrier DO system |
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| CN1921367B CN1921367B (en) | 2010-05-05 |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101820601A (en) * | 2009-02-27 | 2010-09-01 | 中兴通讯股份有限公司 | Method for realizing multicast broadcasting service |
| CN101594221B (en) * | 2009-06-25 | 2012-09-05 | 中兴通讯股份有限公司 | Method and device for transmitting data for non-transparent data service based on selective repeat mechanism |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4703475A (en) * | 1985-12-04 | 1987-10-27 | American Telephone And Telegraph Company At&T Bell Laboratories | Data communication method and apparatus using multiple physical data links |
| US6629285B1 (en) * | 2000-01-04 | 2003-09-30 | Nokia Corporation | Data transmission |
| KR100340720B1 (en) * | 2000-03-09 | 2002-06-20 | 서평원 | A retransmitting device and a method of packet data |
| EP1533932A1 (en) * | 2003-11-19 | 2005-05-25 | Mitsubishi Denki Kabushiki Kaisha | Error control mechanism for a segment based link layer in a digital network |
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101820601A (en) * | 2009-02-27 | 2010-09-01 | 中兴通讯股份有限公司 | Method for realizing multicast broadcasting service |
| CN101594221B (en) * | 2009-06-25 | 2012-09-05 | 中兴通讯股份有限公司 | Method and device for transmitting data for non-transparent data service based on selective repeat mechanism |
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