CN102263625B - Acknowledgement/negative acknowledgement information transmission method for communication system - Google Patents
Acknowledgement/negative acknowledgement information transmission method for communication system Download PDFInfo
- Publication number
- CN102263625B CN102263625B CN 201110185528 CN201110185528A CN102263625B CN 102263625 B CN102263625 B CN 102263625B CN 201110185528 CN201110185528 CN 201110185528 CN 201110185528 A CN201110185528 A CN 201110185528A CN 102263625 B CN102263625 B CN 102263625B
- Authority
- CN
- China
- Prior art keywords
- ack
- nack
- bsn
- nack information
- field
- 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.)
- Expired - Fee Related
Links
- 238000000034 method Methods 0.000 title claims abstract description 64
- 230000005540 biological transmission Effects 0.000 title claims abstract description 45
- 238000004891 communication Methods 0.000 title claims abstract description 20
- 101000741965 Homo sapiens Inactive tyrosine-protein kinase PRAG1 Proteins 0.000 claims abstract description 225
- 102100038659 Inactive tyrosine-protein kinase PRAG1 Human genes 0.000 claims abstract description 225
- 101100465000 Mus musculus Prag1 gene Proteins 0.000 claims description 45
- 230000011218 segmentation Effects 0.000 claims description 35
- 230000002085 persistent effect Effects 0.000 claims description 10
- 238000013507 mapping Methods 0.000 abstract description 5
- 238000010586 diagram Methods 0.000 description 16
- 238000012790 confirmation Methods 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 2
- 230000001174 ascending effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000005381 potential energy Methods 0.000 description 1
- 238000003672 processing method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
Images
Abstract
The invention discloses an acknowledgement/negative acknowledgement (ACK/NACK) information transmission method for a communication system. In the method, when a bitmap field in an ACK/NACK information segment is determined, different initial sequence numbers and different mapping directions are selected, so that each bit in the bitmap field can accurately represent the receiving conditions of a data block corresponding to the bit, wherein the receiving conditions comprise that the data block is not received accurately by a receiver or lost or that the data block is accurately received by the receiver. By the ACK/NACK information transmission method for the communication system, misunderstandings caused by a transmitter in the prior art are avoided, unnecessary retransmission is prevented, radio resources are saved and transmission delay is shortened.
Description
Technical field
The present invention relates to the transmission technology in communication system, be specifically related to the method for acknowledge in communication system/non-confirmation (ACK/NACK) information.
Background technology
In communication system, method based on initial piece sequence number (BSN) transferring ACK/nack message is: receiving terminal detects the data that transmitting terminal transmits, data are not correctly received or when losing, receiving terminal feeds back this testing result information to transmitting terminal when detecting.After transmitting terminal is received feedback information, will not be correctly received or missing data retransmits to transmitting terminal.
The below is to strengthen in GPRS (EGPRS), between travelling carriage (MS) and network (NW), to control (RLC) data block be example to the transmission Radio Link, and the method based on initial BSN transferring ACK/nack message is described in prior art.
RLC data block is placed in transmission, receive window, and each RLC data block has corresponding BSN, and BSN is the piece sequence number of RLC data block, is also the numbering of send window or receive window.Generally, the BSN scope of the RLC data block of transmission, receive window is 0～2047, and namely BSN is numbered 0 to 2047 one-period.During special circumstances, under non-persistent transmission mode, in the transmission of prior art, receive window, the Cycle Length of BSN numbering is the twice that needs the corresponding length of window of RLC data block of feeding back ACK/nack message, as, needing the corresponding length of window of data block of feeding back ACK/nack message is 4, namely has the reception informational needs of 4 RLC data blocks to feed back to transmitting terminal, the Cycle Length of BSN numbering is 8, and namely the BSN scope is 0～7.
Transmitting terminal in turn to receiving terminal transmitting RLC data block, after RLC data block is sent out, still keeps this RLC data block according to BSN in send window.In the send window of transmitting terminal, each RLC data block is expressed as respectively the state of transmission, wait acknowledge state, correct accepting state, is not correctly received or lost condition.If a certain RLC data block is not sent out, this RLC data block is identified as the state of transmission; If a certain RLC data block is sent out, this RLC data block that remaines in send window is identified as the wait acknowledge state.Transmitting terminal receives after the ACK/NACK message of receiving terminal transmission, can know whether the RLC data block that has sent in send window is correctly received, if RLC data block is correctly received, remaines in the identified ACK state of this RLC data block of send window; If RLC data block is not correctly received or dropout of data block, this RLC data block that remaines in send window is identified as the NACK state; If transmitting terminal does not receive response message, this RLC data block that remaines in send window keeps the wait acknowledge state.
Receiving terminal feeds back to transmitting terminal with the reception condition of RLC data block in receive window by ACK/NACK information.In the receive window of receiving terminal, if RLC data block is correctly received, this RLC data block is designated the ACK state, if RLC data block is received by mistake or loses, this RLC data block is designated the NACK state.
Referring to Fig. 1, be the transmission of transferring ACK/nack message in prior art, the schematic diagram of receive window.In this specification institute drawings attached, the window of mark oblique line represents that the RLC data block in this window has sent to receiving terminal, and the RLC data block that keeps in this window is denoted as the wait acknowledge state; The window of mark grid represents that the RLC data block in this window is correctly received, and the RLC data block in this window is denoted as the ACK state; The window of mark vertical line represents that the RLC data in this window are not correctly received or lose, and the RLC data block in this window is denoted as the NACK state; In the send window of transmitting terminal, the BSN of the RLC data block of the wait acknowledge that V (A) expression sends the earliest, the BSN of the next RLC data block that will send of V (S) expression; In the receive window of receiving terminal, the BSN of V (Q) the expression RLC data block that is not correctly received or loses the earliest, V (R) expression is than the BSN of the BSN large 1 of the RLC data block that receives at the latest.
Transmitting terminal sends RLC data block to receiving terminal in turn according to the BSN of RLC data block is ascending, and receiving terminal receives in turn according to the BSN of RLC data block, and in transmission, receive window, same RLC data block correspondence identical BSN.When containing the RLC data block that is not correctly received or loses in receiving terminal detects one group of RLC data block of current reception, receiving terminal will initiatively send ACK/NACK information to transmitting terminal, transmitting terminal just can be learnt the BSN of the RLC data block that is not correctly received in this group RLC data block that receiving terminal receives or loses, and retransmits corresponding RLC data block.
One group of ACK/NACK information that receiving terminal transmits to transmitting terminal, can represent with a plurality of ACK/NACK information segmentings, if an ACK/NACK information segmenting length falls short of, can continue to use next new ACK/NACK information segmenting, will represent that then all ACK/NACK information segmentings of this group ACK/NACK information are transferred to transmitting terminal.Each ACK/NACK information segmenting comprises (BSN_NACK) field and the bitmap field of the piece sequence number of non-confirmation, and wherein the value of BSN_NACK field is the BSN of the RLC data block that is not correctly received the earliest or loses, i.e. V (Q); The reception condition of the RLC data block that each BSN in each bit representation receive window of bitmap field after BSN_NACK is corresponding.The reception condition of each of bitmap field represented corresponding RLC data block, available " 0 " and " 1 " expression.In this specification, correctly receiving with " 1 " expression receiving terminal, and correctly to receive or lose with " 0 " expression receiving terminal be example, and the reception condition of each represented corresponding RLC data block of bitmap field is described.
In Fig. 1, the length of supposing the BSN-MAP field is 8 bits.At first, receiving terminal arranges the value of BSN_NACK field, namely be not correctly received the earliest in receive window or the BSN of the RLC data block lost, and be 3.In receive window, all RLC data blocks corresponding to BSN before 3 are correctly received, the data block of RLC data block for also not receiving that the BSN more than 9 and 9 is corresponding.Receiving terminal is mapped to each position in bitmap field in turn with the value corresponding ACK/NACK information of BSN afterwards that BSN_NACK field in receive window represents.Correct BSN corresponding to RLC data block that receives is 5,6,8, the BSN that the RLC data block that is not correctly received or loses is corresponding is 3,4,7, obtain mapping result 01101, wherein, " 1 " expression receiving terminal correctly receives, and " 0 " expression receiving terminal does not correctly receive or loses, then, each position that the bitmap field afterbody is not filled up arranges position " 0 ", obtains at last bitmap field, is 01101000.At last, receiving terminal will comprise the ACK/NACK information of BSN_NACK field and bitmap field, send transmitting terminal to.After transmitting terminal received ACK/NACK information, the RLC data block that is designated as each correspondence of " 0 " in the RLC data block that the value of BSN_NACK field is corresponding and bitmap field retransferred to receiving terminal.
Bitmap field in ACK/NACK information is 01101000, wherein, in two " 0 " expression window of high order end, corresponding RLC data block is not correctly received or loses, and right-hand member is used for filling up " 000 " of whole " bitmap " field, and the expression receiving terminal does not also receive RLC data block.Can find out, in bitmap field, " 0 " not only represents the RLC data block that is not correctly received or loses, the RLC data block that also do not receive of expression also, and this will cause the misunderstanding of transmitting terminal.After transmitting terminal receives ACK/NACK information, to be used for filling " 0 " of bitmap field in the bitmap field that receive, be interpreted as that corresponding RLC data block is not correctly received or loses, and retransmit and these " 0 " corresponding RLC data blocks, this will cause unnecessary re-transmission.
This shows, in the method for prior art transferring ACK/nack message, when the ACK/NACK information that will feed back in receive window is not enough to fill up a bitmap field, the length of the receive window that the ACK/NACK information that namely need feed back is corresponding is less than the length of bitmap field, after perhaps feeding back several ACK/NACK information segmentings, the length of the receive window that the ACK/NACK information that need feed back at last is corresponding is less than the length of bitmap field, to cause the misunderstanding of transmitting terminal in order to " 0 " of filling, produce unnecessary re-transmission, the waste Radio Resource, and increase time delay.
Summary of the invention
In view of this, purpose of the present invention is to provide the method for transferring ACK/nack message in a kind of communication system, and the method has been avoided unnecessary re-transmission, has saved Radio Resource.
Another object of the present invention is that the method has been avoided unnecessary re-transmission, has saved Radio Resource for the method for transferring ACK/nack message in a kind of communication system.
Another object of the present invention is that the method has been avoided unnecessary re-transmission, has saved Radio Resource for the method for transferring ACK/nack message in a kind of communication system.
Based on an above-mentioned purpose, the invention provides the method for transferring ACK/nack message in a kind of communication system, comprise the following steps:
A, receiving terminal arrange the piece sequence number BSN_NACK field of the non-confirmation of ACK/NACK information segmenting;
The value that b, receiving terminal represent BSN_NACK field in receive window and the corresponding ACK/NACK information of piece sequence number BSN afterwards thereof are mapped to each position in bitmap field in turn;
C, receiving terminal be all positions of not filling up in bitmap field, is placed in the stem of bitmap field and is set to receiving terminal correctly to receive, and obtains to comprise the ACK/NACK information segmenting of BSN_NACK field and bitmap field;
D, receiving terminal will comprise the ACK/NACK information of all ACK/NACK information segmentings, send transmitting terminal to.
Based on another above-mentioned purpose, the invention provides the method for transferring ACK/nack message in a kind of communication system, comprise the following steps:
A, receiving terminal arrange the BSN_NACK field of ACK/NACK information segmenting;
B, receiving terminal judge that whether the ACK/NACK information segmenting is that last ACK/NACK information segmenting or the ACK/NACK information of ACK/NACK information only has an ACK/NACK information segmenting, if execution in step C, otherwise, execution in step D;
C, receiving terminal oppositely are mapped to each position in bitmap field with value ACK/NACK information corresponding to BSN before that BSN_NACK field in receive window represents; The institute that the bitmap field stem is not filled up has vacant position, and is set to receiving terminal correctly receive, and obtains to comprise the ACK/NACK information segmenting of BSN_NACK field and bitmap field, then execution in step F;
D, receiving terminal are mapped to each position in bitmap field in turn with ACK/NACK information corresponding to the BSN after the value that the BSN_NACK field represents in receive window, obtain to comprise the ACK/NACK information segmenting of BSN_NACK field and bitmap field;
E, receiving terminal judge that whether the ACK/NACK information segmenting has follow-up ACK/NACK information segmenting, if having, returns to steps A; Otherwise, execution in step F;
F, receiving terminal will comprise the ACK/NACK information of all ACK/NACK information segmentings, send transmitting terminal to.
Based on another above-mentioned purpose, the invention provides the method for transferring ACK/nack message in a kind of communication system, comprise the following steps:
I, receiving terminal arrange the starting block sequence number BSN_START field of ACK/NACK information segmenting;
Value and the corresponding ACK/NACK information of BSN afterwards thereof that II, receiving terminal represent BSN_START field in receive window, be mapped in turn each position in bitmap field, draw the BSN-MAP field, then obtain comprising the ACK/NACK information segmenting of BSN_NACK field and bitmap field;
III, receiving terminal will comprise the ACK/NACK information of all ACK/NACK information segmentings, send transmitting terminal to.
This shows, three of transferring ACK/nack message kinds of methods in communication system provided by the invention, during bitmap field in determining ACK/NACK information, choose different start sequence number, different mapping directions, make the reception condition of each potential energy Correct in bitmap field data block corresponding with this, namely be expressed as receiving terminal and correctly receive or lose, perhaps be expressed as receiving terminal and correctly receive.Like this, the method for transferring ACK/nack message in three kinds of communication systems of the present invention has been avoided the misunderstanding that in the prior art, transmitting terminal produces, and has prevented unnecessary re-transmission, has saved Radio Resource, has reduced propagation delay time.
Description of drawings
Fig. 1 is the transmission of transferring ACK/nack message in prior art, the schematic diagram of receive window;
Fig. 2 is the flow chart of the first transferring ACK of the present invention/nack message method;
Fig. 3 is the transmission of first method transferring ACK/nack message of the present invention, the schematic diagram one of receive window;
Fig. 4 is the transmission of first method transferring ACK/nack message of the present invention, the schematic diagram two of receive window;
Fig. 5 is the flow chart of the second transferring ACK of the present invention/nack message method;
Fig. 6 is for using the flow chart of the ACK/NACK information shown in receive window in the described method transmission diagram 3 of Fig. 5;
Fig. 7 is the flow chart of the method for the third transferring ACK/nack message of the present invention;
Fig. 8 is the transmission of the third method transferring ACK/nack message of the present invention, the schematic diagram of receive window;
Fig. 9 is for using the flow chart of the ACK/NACK information shown in receive window in the described method transmission diagram 8 of Fig. 7;
Figure 10 is under non-persistent transmission mode, the schematic diagram of transmission, receive window in prior art;
Figure 11 is under non-persistent transmission mode, the schematic diagram of transmission of the present invention, receive window.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, below in conjunction with embodiment and accompanying drawing, the present invention is described in more detail.
Equally, to strengthen in GPRS (EGPRS), between travelling carriage (MS) and network (NW), transmission Radio Link control (RLC) data block is example, and the method for transferring ACK/nack message of the present invention is described.
At first, introduce generally, namely the BSN of the RLC data block of transmission, receive window is numbered at 0 to 2047 o'clock, the method for three kinds of transferring ACK/nack messages of the present invention.
(1) method of the first transferring ACK/nack message.
Referring to Fig. 2, the flow chart for the first acknowledge of the present invention and unacknowledged information method comprises the following steps:
The setting of BSN_NACK field is in the following several ways: if first segmentation or ACK/NACK information that the ACK/NACK information segmenting is ACK/NACK information only have a segmentation, the represented value of BSN_NACK field is V (Q); If the ACK/NACK information segmenting is neither first segmentation of ACK/NACK information, last segmentation that neither ACK/NACK information, the value that the BSN_NACK field represents are the corresponding BSN of first RLC data block that is not correctly received or is lost after the BSN of RLC data block corresponding to previous ACK/NACK information segmenting; If the ACK/NACK information segmenting is last segmentation of ACK/NACK information, the value that the BSN_NACK field represents is, in V in receive window (R) bitmap lengths before, first is not correctly received or the BSN of the RLC data block lost; If be last segmentation, and the RLC data block of this ACK/NACK information segmenting all is correctly received, and the value that represents of BSN_NACK field is V (R).
When containing the RLC data block that is not correctly received or loses in above-mentioned RLC data block for the receiving terminal reception, the situation of BSN_NACK field is set in first method step 201 of the present invention.The RLC data block that sends receiving terminal when transmitting terminal to all is correctly received, and when this moment, transmitting terminal required receiving terminal feeding back ACK/nack message, the processing method of prior art is: the value of BSN_NACK field is set to V (R), each position of bitmap field all is set to 0, after transmitting terminal receives ACK/NACK information, the data block of each correspondence in bitmap field is retransmitted to transmitting terminal.Obviously, this has caused unnecessary re-transmission, has wasted Radio Resource.For fear of unnecessary re-transmission, when the RLC data block that sends receiving terminal to when transmitting terminal all is correctly received, and when this moment, transmitting terminal required receiving terminal feeding back ACK/nack message, in the step 201 of the method for the first transferring ACK/nack message of the present invention, the value that the BSN_NACK field represents is set to V (R).
Each position of bitmap field is set to " 0 ", the RLC data block that the expression receiving terminal does not correctly receive or loss is corresponding with this; Be set to " 1 ", the correct reception of the expression receiving terminal RLC data block corresponding with this.
In this step, if the room of not filling up is arranged in bitmap field, move to the stem of bitmap field, be set to " 1 ", draw bitmap field; If the room that the bitmap field afterbody does not fill up directly draws bitmap field.If the value that the BSN_NACK field represents is V (R), through after step 202 and 203, each position of bitmap field is " 1 ".
In bitmap field, each position before, position that the value that the BSN_NACK field represents is corresponding, corresponding each RLC data block is for being correctly received, and it is set to " 1 ", and Correct needs to have gone out the reception condition of the RLC data block of feeding back ACK/nack message.
After transmitting terminal receives ACK/NACK information, at first resolve BSN_NACK field and bitmap field: judge whether the value that the BSN_NACK field of each ACK/NACK information segmenting represents is V (R), if, show that each position with the bitmap field of this ACK/NACK information segmenting is " 1 ", each RLC data block equal receiving end in the expression send window in V (R) bitmap field length before correctly receives; Otherwise, in the bitmap field of each ACK/NACK information segmenting, the BSN of the RLC data block that the position at first " 0 " place is corresponding is the value that the BSN_NACK field represents, the BSN of the RLC data block of first " 0 " first correspondence afterwards is that the value that the BSN_NACK field represents adds 1, the rest may be inferred, and the BSN of the RLC data block of each correspondence of back is that the BSN of data block corresponding to previous position adds 1.Then, in bitmap field with each ACK/NACK information segmenting, the RLC data block that is designated as each correspondence of " 0 " retransfers to receiving terminal, if the position of described being designated as " 0 " is arranged in last bitmap field, and certain the corresponding RLC data block in the bitmap field before this position and last field is identical, and the RLC data block of this correspondence only retransmits once.
The below illustrates respectively the situation of using first method transferring ACK/nack message of the present invention shown in Figure 2 for three embodiment.
Embodiment one.
Reception in Fig. 1, send window situation are as example, and the length of supposing bitmap field is 8 bits, and ACK/NACK information only has a segmentation.At first, according to step 201, receiving terminal arranges the value of BSN_NACK field, and namely V (Q), be 3.According to step 202 and step 203, value and the corresponding ACK/NACK information of BSN afterwards thereof that receiving terminal represents BSN_NACK field in receive window, be mapped in turn each position in bitmap field, being about to the ACK/NACK information of BSN sequence number from 3 to 8, being mapped in turn each position in bitmap field, is 001101, with all positions of not filling up in bitmap, be placed in the stem of bitmap field, be set to " 1 ", the bitmap field that obtains is 11001101.Then, according to step 204～206, receiving terminal will comprise the ACK/NACK communication of BSN_NACK field and bitmap field again to transmitting terminal.After transmitting terminal receives ACK/NACK information, at first resolve BSN_NACK field and bitmap field: the value 3 that in ACK/NACK information, the BSN_NACK field represents, for in bitmap field, first is designated as the BSN of the RLC data block of the position correspondence of " 0 ", the BSN that is the RLC data block of the 3rd position correspondence in the bitmap field is that 3, BSN is that 3 data block is not correctly received or loses; Then, the RLC data block that in bitmap field, is designated as each correspondence of " 0 " retransfers to receiving terminal, is about to BSN and is 3,4,7 RLC data block and retransmit to receiving terminal.
Embodiment two.
As shown in Figure 3, be transmission, the receive window schematic diagram one of the first transferring ACK/nack message of the present invention, the length of supposing bitmap field is 8 bits, and ACK/NACK information has two segmentations.According to step 201, receiving terminal arranges the value of the BSN_NACK field of first ACK/NACK information segmenting, be 3, according to step 202 and step 203, receiving terminal obtains the bitmap field of first ACK/NACK information segmenting, be 00101101, according to step 204, receiving terminal draws first ACK/NACK information segmenting that comprises BSN_NACK field and bitmap field.According to step 205, receiving terminal is judged the follow-up ACK/NACK of having information segmenting, continues step 201 to step 205, and the value that draws the BSN_NACK field is 9, bitmap field is 11010111, draws second the ACK/NACK information segmenting that comprises BSN_NACK field and bitmap field.According to step 206, receiving terminal will comprise this group ACK/NACK information of all first and second ACK/NACK information segmentings, send transmitting terminal to.It is 3,4,6,9 RLC data block that transmitting terminal retransmits the BSN corresponding with an ACK/NACK information segmenting in receive window, and the BSN corresponding with the 2nd ACK/NACK information segmenting be the RLC data block of 9, b, and here, BSN is that 9 data block only retransmits once.
Embodiment three.
Referring to Fig. 4, be the transmission of the first transferring ACK/nack message of the present invention, the schematic diagram two of receive window, use the described method of Fig. 2, the value that obtains the BSN_NACK field of first ACK/NACK information segmenting is 3, bitmap field is 00101111; According to step 201, if the ACK/NACK information segmenting is last segmentation, and the RLC data block of this ACK/NACK information segmenting all is correctly received, the value that represents of BSN_NACK field is V (R), obtaining the value that the BSN_NACK field of second ACK/NACK information segmenting represents is f, and bitmap field is 1111111.
(2) method of the second transferring ACK/nack message.
Referring to Fig. 5, the flow chart for the second transferring ACK of the present invention/nack message method comprises the following steps:
The method that the BSN_NACK field is set is, sequence in whole ACK/NACK information judges to the ACK/NACK information segmenting: if the ACK/NACK information segmenting is first segmentation of ACK/NACK information but not last segmentation, the represented value of BSN_NACK field is V (Q); If be last segmentation or only have a segmentation, the value that the BSN_NACK field represents is V (R); If neither first segmentation, neither last segmentation, the value that represents of BSN_NACK field is the BSN of first RLC data block after the RLC data block that in receive window, previous ACK/NACK information segmenting is corresponding.
In this step, oppositely mapping refers to, the ACK/NACK information of V in receive window (R)-1 correspondence is mapped to the last position of bitmap field, the position of caudal end namely, again ACK/NACK information corresponding to V in receive window (R) 1-2 is mapped to position before, bitmap field caudal end position, fills out successively each position of bitmap field to stem.
In this step, if the bitmap field stem has the room of not filling up, be set to " 1 ", draw bitmap field; If the room that the bitmap field stem is not filled up oppositely directly draws bitmap field after mapping.
After transmitting terminal receives ACK/NACK information, at first resolve BSN_NACK field and bitmap field: judge whether the value that the BSN_NACK field represents is V (R), if, show bitmap field the most not the BSN of RLC data block corresponding to position be V (R)-1, bitmap field is position before, position the most not, the BSN of corresponding RLC data block is V (R)-2, and the rest may be inferred, and the BSN of the RLC data block of each correspondence of front is that the BSN of the RLC data block of a rear position correspondence subtracts 1; Otherwise, in bitmap field, the BSN of the RLC data block of first correspondence is that the value that the BSN_NACK field represents adds 1, the BSN of the RLC data block of second position correspondence is that the value that the BSN_NACK field represents adds 2, the rest may be inferred, and the BSN of the RLC data block of each correspondence of back is that the BSN of RLC data block corresponding to previous position adds 1.Then, RLC data block corresponding to value in the value that the BSN_NACK field is represented except V (R), and the RLC data block that is designated as each correspondence of " 0 " in the bitmap field of each ACK/NACK information segmenting, retransfer to receiving terminal, if the position of described being designated as " 0 " is arranged in last bitmap field, and certain the corresponding RLC data block in the bitmap field before this position and last field is identical, and the RLC data block of this correspondence only retransmits once.
The below illustrates respectively the situation of using second method transferring ACK/nack message of the present invention shown in Figure 5 for two example two.
Embodiment one.
Reception in Fig. 1, send window situation are as example, and the length of supposing bitmap field is 8 bits, and ACK/NACK information only has a segmentation.At first, according to step 501, the value of BSN_NACK field is set, namely V (R), be 9.According to step 502 and step 503, with the ACK/NACK information before 9 in receive window, oppositely be mapped to each position in bitmap field, be 001101; The institute that the bitmap field stem is not filled up has vacant position, and is set to " 1 ", and the bitmap field that obtains is 11001101, then draws the ACK/NACK information segmenting that comprises BSN_NACK field and bitmap field.According to step 506, will comprise the ACK/NACK communication of ACK/NACK information segmenting to transmitting terminal, after transmitting terminal receives ACK/NACK information, be that 3,4,7 RLC data block retransmits to receiving terminal with BSN.
Embodiment two.
Reception in Fig. 3, send window situation are as example, and the length of supposing bitmap field is 8 bits, and ACK/NACK information has two segmentations.Referring to Fig. 6, for using the flow chart of the ACK/NACK information shown in receive window in the described method transmission diagram 3 of Fig. 5, comprise the following steps:
(3) method of the third transferring ACK/nack message.
Referring to Fig. 7, the flow chart for the method for the third transferring ACK/nack message of the present invention comprises the following steps:
the method that the represented value of BSN_START field is set is, sequence in whole ACK/NACK information judges to the ACK/NACK information segmenting: if the ACK/NACK information segmenting is first segmentation and non-last segmentation of ACK/NACK information, the represented value of BSN_START field has two kinds of definite methods, a kind ofly be expressed as the represented value of BSN_START field with V (Q), another kind method is that the represented value of BSN_START field is set in receive window, V (Q) is before less than certain BSN in bitmap lengths, this BSN makes in receive window the ACK/NACK information from this BSN to V (R)-1, just in time can fill up in turn an integral multiple bitmap field, make the transmission of each ACK/NACK information segmenting not duplicate the situation of transmission data block, if only have the situation of a segmentation for last segmentation or ACK/NACK information, the value that the BSN_START field represents is, the BSN of first RLC data block in V in receive window (R) bitmap lengths before, if neither first segmentation, neither last segmentation, the value that the BSN_START field represents is the BSN of first RLC data block after the RLC data block that in receive window, previous ACK/NACK information segmenting is corresponding.
After transmitting terminal receives ACK/NACK information, at first resolve BSN_START field and bitmap field: in bitmap field, the BSN of the RLC data block of first correspondence is the value that the BSN_START field represents, the BSN of the RLC data block of second position correspondence is that the value that the BSN_START field represents adds 1, the rest may be inferred, and the BSN of the RLC data block of each correspondence of back is that the BSN of RLC data block corresponding to previous position adds 1.Then, in bitmap field with each ACK/NACK information segmenting, the RLC data block that is designated as each correspondence of " 0 " retransfers to receiving terminal, if described being designated as " 0 " if the position be arranged in last bitmap field, and certain the corresponding data block in the bitmap field before this position and last bitmap field is identical, and the data block of this correspondence only retransmits once.
The below illustrates respectively the situation of using the third method transferring ACK/nack message of the present invention shown in Figure 7 for two example two.
Embodiment one.
Reception in Fig. 1, send window situation are as example, and the length of supposing bitmap field is 8 bits, and ACK/NACK information only has a segmentation.At first, according to step 701, the value of BSN_START field is 1, according to step 702, receiving terminal is mapped to each position in bitmap field in turn with value and the corresponding ACK/NACK information of BSN afterwards thereof that BSN_START field in receive window represents, be about in receive window ACK/NACK information corresponding after 1 and 1, being mapped in turn each position in bitmap field, obtaining bitmap field, is 11001101.Then, according to step 703～705, then the ACK/NACK communication that will comprise BSN_START field and bitmap field is to transmitting terminal.After transmitting terminal received ACK/NACK information, the RLC data block that in bitmap field, is designated as each correspondence of " 0 " retransferred to receiving terminal, was about to BSN and was 3,4,7 RLC data block and retransmit to receiving terminal.
Embodiment two.
As shown in Figure 8, be the transmission of the third transferring ACK/nack message of the present invention, the schematic diagram of receive window, the length of supposing bitmap field is 8 bits, and ACK/NACK information has two segmentations.Referring to Fig. 9, for using the flow chart of the ACK/NACK information shown in receive window in the described method transmission diagram 8 of Fig. 7, comprise the following steps:
According to step 701, at this moment, the ACK/NACK information segmenting is first segmentation and non-last segmentation of ACK/NACK information, and the represented value of BSN_START field has two kinds of definite methods, a kind of with the represented value of V (Q) expression BSN_START field, be 3; Another kind method is that the represented value of BSN_START field is set in receive window, V (Q) is before less than certain BSN in bitmap lengths, this BSN makes in receive window the ACK/NACK information from this BSN to V (R)-1, just in time can fill up in turn an integral multiple bitmap field, make the represented RLC data block information of each bitmap field without the part that repeats.Here adopt described another kind of method, the represented value of BSN_START field is set to ff, the represented value of BSN_START field is set to ff can make in receive window ACK/NACK information from ff to e, just in time can fill up in turn 2 bitmap field, make the represented RLC data block information of two bitmap field without the part that repeats.
In above-mentioned steps 901, if the value that the BSN_START field is represented, be defined as 3, when transmitting ACK/NACK information shown in Figure 8, except step 902 and step 908, other steps are identical with above-mentioned steps, and step 902 and step 908 are changed into respectively: step 902, obtaining the bitmap field in first ACK/NACK information segmenting, is 00101101; Step 908, receiving terminal will comprise this group ACK/NACK information of first and second information segmenting, send transmitting terminal to.It is 3,4,6,9 RLC data block that transmitting terminal retransmits the BSN corresponding with an ACK/NACK information segmenting in receive window, and the BSN corresponding with the 2nd ACK/NACK information segmenting be the RLC data block of 9, b, and here, BSN is that 9 data block only retransmits once.
Be more than normal conditions, when namely the BSN of the RLC data block of transmission, receive window is numbered 0 to 2047 one-period, three kinds of methods of transferring ACK/nack message of the present invention.During special circumstances, under non-persistent transmission mode, in the receive window of prior art, the Cycle Length of BSN numbering is the twice that needs the corresponding length of window of data block of feeding back ACK/nack message.As, needing the corresponding length of window of data block of the ACK/NACK information of feedback is 4, namely has the reception informational needs of 4 ACK/NACK data blocks to feed back to transmitting terminal, and the Cycle Length of BSN numbering is 8, and namely the BSN scope is 0～7.
Referring to Figure 10, during for special circumstances, under non-persistent transmission mode, in prior art, the schematic diagram of transmission, receive window, at this moment, suppose that bitmap field length is 16.According to the method for the first transferring ACK/nack message of the present invention, ACK/NACK information shown in Figure 10 is transmitted, at first, the value of BSN_NACK field is set, be 6; Value and the corresponding ACK/NACK information of BSN afterwards thereof that BSN_NACK field in receive window is represented, be mapped in turn each position in bitmap field, all positions that the bitmap field afterbody is not filled up, move to the stem of bitmap field, be set to " 1 ", obtaining the bitmap field shown in Figure 10, is 1111111111110011; At last, will comprise the ACK/NACK communication of BSN_NACK field and bitmap field to transmitting terminal.
In Figure 10, the BSN of receive window repeats numbering by 0～7, numbering cycle length is 8, length 16 less than bitmap field, therefore, the BSN of first of bitmap field correspondence needs 2 in the numbering cycle at ACK/NACK information place of feedback in receive window, but needs 2 in cycle of previous BSN in BSN cycle at the ACK/NACK information place of feedback in receive window.Yet, after transmitting terminal receives ACK/NACK information, when ACK/NACK information is resolved, can only to need to think in receive window 2 in the numbering cycle at ACK/NACK information place of feedback to the BSN of first correspondence of bitmap field, this demonstration is wrong understanding.For the method for second and third kind transferring ACK/nack message of the present invention, also same problem can appear.
Therefore, under non-persistent transmission mode, before the method for using three kinds of transferring ACK/nack messages of the present invention, need to adjust the Cycle Length L of BSN, first the corresponding BSN that makes bitmap field is the BSN that needs in receive window in the numbering cycle at ACK/NACK information place of feedback, after making sending end receive ACK/NACK information, can each corresponding BSN of correct understanding bitmap field.If needing the corresponding length of window of RLC data block of feedback is L1, establish the length L 2 of bitmap.In the present invention, transmitting terminal is adjusted into maximum in 2L1 and L2, i.e. L=max (2L1, L2) with sending length of window under non-persistent transmission mode; Correspondingly, receiving terminal is the value identical with the transmitting terminal length of window with the receive window length adjustment, i.e. maximum in 2L1 and L2.Take transmission shown in Figure 10, receive window as example, needing the corresponding length of window of RLC data block of feedback is 4, i.e. 2L1=8, and the length of bitmap is set to 16 at this moment, i.e. L2=16, receive window length should be the maximum 16 in 2L1 and L2.
Referring to Figure 11, under non-persistent transmission mode, the schematic diagram of transmission of the present invention, receive window.The cycle numbering of window is adjusted into 0～15 by 0～7, adopt the method for the first acknowledge of the present invention and unacknowledged information, first of bitmap field corresponding BSN is 2, be 2 in the BSN numbering cycle at the ACK/NACK information place that needs feedback in receive window, after transmitting terminal receives ACK/NACK information, can each corresponding BSN of correct understanding bitmap field.Equally, under non-persistent transmission mode, after adjusting the cycle numbering of window, adopt the method for the present invention's second and third kind acknowledge and unacknowledged information, each the corresponding BSN of bitmap field in the ACK/NACK information that transmitting terminal also can correct understanding receives.
In sum, these are only preferred embodiment of the present invention, is not for limiting protection scope of the present invention.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., within all should being included in protection scope of the present invention.
Claims (6)
1. the method for transferring ACK/nack message in a communication system, is characterized in that, comprises the following steps:
A, receiving terminal arrange the BSN_NACK field of ACK/NACK information segmenting;
B, receiving terminal judge whether the ACK/NACK information segmenting is last ACK/NACK information segmenting of ACK/NACK information, if execution in step C, otherwise, execution in step D; Or receiving terminal judges ACK/NACK information whether for only having an ACK/NACK information segmenting, if execution in step C, otherwise, execution in step D;
C, receiving terminal oppositely are mapped to each position in bitmap field with value ACK/NACK information corresponding to BSN before that BSN_NACK field in receive window represents; The institute that the bitmap field stem is not filled up has vacant position, and is set to receiving terminal correctly receive, and obtains to comprise the ACK/NACK information segmenting of BSN_NACK field and bitmap field, then execution in step F;
D, receiving terminal are mapped to each position in bitmap field in turn with ACK/NACK information corresponding to the BSN after the value that the BSN_NACK field represents in receive window, obtain to comprise the ACK/NACK information segmenting of BSN_NACK field and bitmap field;
E, receiving terminal judge that whether the ACK/NACK information segmenting has follow-up ACK/NACK information segmenting, if having, returns to steps A; Otherwise, execution in step F;
F, receiving terminal will comprise the ACK/NACK information of all ACK/NACK information segmentings, send transmitting terminal to.
2. the method for claim 1, is characterized in that, when ACK/NACK information only comprised an ACK/NACK information segmenting, the value that the field of BSN_NACK described in steps A represents was V (R).
3. the method for claim 1, is characterized in that, when ACK/NACK information comprised two or more ACK/NACK information segmentings, the method that the BSN_NACK field is set described in steps A was:
Sequence in whole ACK/NACK information judges described receiving terminal to the ACK/NACK information segmenting, if be first segmentation, the represented value of BSN_NACK field is not to be correctly received the earliest in receive window or the BSN of missing data piece;
If be last segmentation, the value that represents of BSN_NACK field is V(R);
If neither first segmentation, neither last segmentation, the value that represents of BSN_NACK field is the corresponding BSN of first data block that is not correctly received or is lost after the data block that in receive window, previous ACK/NACK information segmenting is corresponding.
4. method as described in any one in claim 1～3, it is characterized in that, further comprise after described step F: data block corresponding to other values in the value that the BSN_NACK field of each ACK/NACK information segmenting that described transmitting terminal will receive represents except V (R), with be designated as in bitmap field that receiving terminal does not correctly receive or the data block of each correspondence of losing, retransfer to receiving terminal.
5. method as claimed in claim 4, it is characterized in that, if describedly be designated as that receiving terminal does not correctly receive or the position of losing is arranged in last bitmap field, and identical with arbitrary corresponding data block in bitmap field before last bitmap field, retransmit once described data block corresponding to position that receiving terminal does not correctly receive or loses that be designated as.
6. method as claimed in claim 1 or 2, it is characterized in that, under non-persistent transmission mode, further comprise before described steps A: described transmitting terminal is from the twice value of the corresponding length of window of data block that needs feeding back ACK/nack message, and chooses maximum in the bitmap field length value;
Described transmitting terminal is the maximum of selecting with the send window length adjustment;
Described receiving terminal is the maximum of selecting with the receive window length adjustment.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110185528 CN102263625B (en) | 2006-12-25 | 2006-12-25 | Acknowledgement/negative acknowledgement information transmission method for communication system |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201110185528 CN102263625B (en) | 2006-12-25 | 2006-12-25 | Acknowledgement/negative acknowledgement information transmission method for communication system |
Related Parent Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN2006101682978A Division CN101212283B (en) | 2006-12-25 | 2006-12-25 | Method for transporting acknowledged information/non-acknowledged information in communication system |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN102263625A CN102263625A (en) | 2011-11-30 |
| CN102263625B true CN102263625B (en) | 2013-11-06 |
Family
ID=45010100
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201110185528 Expired - Fee Related CN102263625B (en) | 2006-12-25 | 2006-12-25 | Acknowledgement/negative acknowledgement information transmission method for communication system |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN102263625B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN103391521B (en) * | 2012-05-09 | 2017-06-06 | 华为技术有限公司 | A kind of method of short message transmission, apparatus and system |
| 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 |
Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1464754A (en) * | 2002-06-25 | 2003-12-31 | 华为技术有限公司 | Method for sending access request from mobile terminal in radio communication system |
| CN1753354A (en) * | 2005-10-25 | 2006-03-29 | 华中科技大学 | Base station TCP agency confirmation method based on ARQ information and its system |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| WO2005064839A1 (en) * | 2003-12-29 | 2005-07-14 | Electronics And Telecommunications Research Institute | Method for creating feedback message for arq in mobile communication system |
-
2006
- 2006-12-25 CN CN 201110185528 patent/CN102263625B/en not_active Expired - Fee Related
Patent Citations (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN1464754A (en) * | 2002-06-25 | 2003-12-31 | 华为技术有限公司 | Method for sending access request from mobile terminal in radio communication system |
| CN1753354A (en) * | 2005-10-25 | 2006-03-29 | 华中科技大学 | Base station TCP agency confirmation method based on ARQ information and its system |
Also Published As
| Publication number | Publication date |
|---|---|
| CN102263625A (en) | 2011-11-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101212283B (en) | Method for transporting acknowledged information/non-acknowledged information in communication system | |
| TWI259674B (en) | Method and apparatus for reducing transmission errors in a third generation cellular system | |
| CA2711776C (en) | Method and transmitting unit for reducing a risk of transmission stalling | |
| CN102387485B (en) | The method and apparatus sent control signaling | |
| JP6374945B2 (en) | Method and apparatus for using more transmission opportunities in a distributed network topology with limited HARQ processes | |
| CN103888229A (en) | Method for retransmitting data in multi-carrier system | |
| CN109391381B (en) | Data confirmation information generation and feedback method and device and data transmission method and device | |
| CN101369879B (en) | Method and apparatus for requesting data retransmission | |
| CN101174927B (en) | Feedback method for processing data accepting state and its receiving and transmitting device | |
| CN101601219A (en) | The method and apparatus that is used for improved re-transmission | |
| CN102263625B (en) | Acknowledgement/negative acknowledgement information transmission method for communication system | |
| CN101989896B (en) | Feedback method and device for ARQ connection | |
| CN110830199A (en) | Information transmission method, terminal and base station | |
| CN101826947A (en) | Transmission method of ACK/NACK in enhanced long-period evolution system and base station | |
| KR20080067044A (en) | Data transmitting/receiving method and communication system thereof | |
| CN104219030A (en) | Method and device for transmitting network coding data | |
| CN101932008A (en) | Automatic repeat method and device | |
| CN101826948B (en) | Transmission method of ACK/NACK in enhanced long-period evolution system and base station | |
| JP2006352199A (en) | Wireless transceiver | |
| KR100651441B1 (en) | Method for constructing bitmap and method for re-transmitting packet using the bitmap | |
| CN103078722A (en) | Method and device for requesting data retransmission |
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 | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171211 Address after: 225327 Mingzhu Avenue, Yongan Town, Taizhou City, Jiangsu Province, No. 108 Patentee after: Wei Liqiang Address before: 518129 Bantian HUAWEI headquarters office building, Longgang District, Guangdong, Shenzhen Patentee before: Huawei Technologies Co., Ltd. |
|
| TR01 | Transfer of patent right | ||
| CB03 | Change of inventor or designer information | ||
| CB03 | Change of inventor or designer information |
Inventor after: Yin Jing Inventor before: Wang Zhixi Inventor before: Chen De Inventor before: Fang Ming |
|
| TR01 | Transfer of patent right | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20171220 Address after: 050802 Shijiazhuang City, Hebei Province, Zhengding County, Xincheng Town, Xincheng Town, Xincheng village, three Hutong No. 6 Patentee after: Yin Jing Address before: 225327 Mingzhu Avenue, Yongan Town, Taizhou City, Jiangsu Province, No. 108 Patentee before: Wei Liqiang |
|
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20131106 Termination date: 20171225 |