CN101136727B - Method for reporting whether data is exactly received - Google Patents
Method for reporting whether data is exactly received Download PDFInfo
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- CN101136727B CN101136727B CN200610127972A CN200610127972A CN101136727B CN 101136727 B CN101136727 B CN 101136727B CN 200610127972 A CN200610127972 A CN 200610127972A CN 200610127972 A CN200610127972 A CN 200610127972A CN 101136727 B CN101136727 B CN 101136727B
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Abstract
The method includes steps: (1) in current block cycle, the receiving end (RE) receives wireless block (WB) sent from the sending end (SE) to determine whether info with one bit is adopted to indicatewhether WB is received correctly in current block cycle; if yes, then executing (2); otherwise, executing (3); (2) RE sends WB of carrying short info for right /error receiving ACK/NACK to SE; the short ACK/NACK info with one bit to indicate whether WB is received correctly in current block cycle; (3) RE sends WB of carrying short ACK/NACK info to SE; the short ACK/NACK info with two bits to indicate whether WB is received correctly in current block cycle. The invention raises service efficiency of short ACK/NACK info.
Description
Technical field
The present invention relates to the technology of transceive data in wireless communication system, particularly a kind of method that whether correctly receives data that reports.
Background technology
At present, travelling carriage in wireless communication system (MS), during data, two kinds of different mechanism are used in uplink and downlink as transmission between MS in GPRS (GPRS) system or global system for mobile communications (GSM) and the wireless communication system network side.Temporary Block Flow (TBF) is interim connection between MS and the wireless communication system network side, only just exists in the process of transfer of data, and it is supported in the one-way transmission of logic link control (LLC) Packet Data Unit (PDU) on the grouping physical channel.A TBF can go up use radio resource transfer data by the one or more Packet Data Channels (PDCH) in the wireless communication system that current time slots is distributed.Wireless communication system network has distributed Temporary Block Flow indication (TFI) for each TBF, and when a plurality of TBF occurring simultaneously in a PDCH, the TFI of each TBF is different, thereby is used for receiving corresponding TBF to the MS indication.
Each LLC frame of wireless communication system network side is made up of Radio Link control (RLC) piece of a series of carrying data, and each RLC piece has corresponding piece sequence number (BSN), and carries the transmission of the RLC piece of data according to the order of BSN.Radio block is the base unit of allocation of radio resources and wireless transmission, it can be carried on TBF and go up transmission, each radio block is made up of 4 time slots, and lay respectively at 4 continuous time division multiple accesses (TDMA) frame, the propagation delay time of each radio block all is 20 milliseconds (ms), as shown in Figure 1,52 time slots of 52 multi-frames are arranged according to shown in Figure 1, have 12 radio blocks, use respectively B0, B1 ..., B11 represents, the cycle of each 52 multi-frame is 240ms, and the duration of each radio block equals 20ms like this.The transmission of RLC data block is by radio block carrying (just carrying the data division of RLC piece), and because of the difference of coded system, 1 radio block can carry 2 RLC data blocks at most.In order in wireless communication system, to optimize the transfer of data under the packet switched mode, the RLC piece is transmitted in and is subjected to automatic repetitive requests (ARQ) mechanism control under RLC/ medium access control (MAC) affirmation mode, by poll by MS report related downlink situation and successfully receive the information of RLC piece.Polling mechanism is only applicable to downlink data transmission, packet control unit (PCU) control by the wireless communication system network side issues polling request, whether inquiry MS correctly receives the RLC piece, after MS receives this polling request, can reply whether correctly receive the RLC piece by upstream data.The wireless communication system network side, be that transmitting terminal adopts send window to come addressing RLC piece, in send window, the RLC piece is designated not transmission, wait acknowledge respectively, correctly receives and wrong accepting state: a RLC piece was not sent out, and then was designated not transmit status; , the RLC piece is designated the wait acknowledge state if being sent out; When receiving correct reception that downlink data carries or wrong when receiving (ACK/NACK) report, then identifying this RLC piece is correct accepting state or wrong accepting state.Transmitting terminal knows according to the ACK/NACK report that receives whether the RLC piece that is sent is received and corresponding renewal send window by correct, if the RLC piece that is sent has been designated correct accepting state, then send window is upgraded, after send window upgrades, can move to the position of the RLC piece of next sign wait acknowledge state according to the size of BSN.
The frequency that the wireless communication system network side wheel is ask is carried out the self adaptation adjustment according to the situation of current wireless link, and when wrong piece rate (BLER) rising (knowing according to the ACK/NACK report that MS replys by upstream data) of Radio Link, poll frequency increases; Otherwise, poll frequency reduces. and poll is also considered the scheduling frequency of RLC piece. and Fig. 2 adopts the method flow diagram of polling mode transmitting RLC piece for prior art, suppose that the polling interval is set to the 12RLC piece, the network entity that relates to comprises wireless communication system network side and MS, and its concrete steps are:
Step 201, wireless communication system network side send the RLC piece according to the BSN of RLC piece to the MS order.
Step 202, MS mistake receive the RLC piece from the wireless communication system network side, and this step is an optional step.
Step 203, after the wireless communication system network side sends 12 RLC pieces, send the RLC piece that carries ACK/NACK poll sign to MS.
When step 204, MS receive the RLC piece of step 203, carry the ACK/NACK report, carry the information that correctly receives 12 RLC pieces whether respectively in this report by upstream data.
Step 205, wireless communication system network lateral root are according to the ACK/NACK report that receives, and definite RLC piece that will retransmit promptly retransmits the wrong RLC piece that receives or lose.
Because the rlc layer of MS need be collected whole RLC pieces that the LLC frame comprised and could organize and wrap the high level of passing to MS, transmits to the high level of MS if a RLC lost block will influence whole LLC frame.But inform by the described method of Fig. 2 whether wireless communication system network side MS correctly receives the RLC piece that the LLC frame is comprised, can there be transmission delay, this is to produce at interval because of: poll, when going out active or the wrong RLC piece that receives, the wrong RLC piece that receives or lose can not be known and retransmit to the wireless communication system network side immediately, just retransmits after having only by the time poll and MS to report the ACK/NACK report.In actual applications, the wireless communication system network side knows that the wrong RLC piece that receives or lose needs the time of about 150～250ms, has so just produced bigger propagation delay time.
Because data are to be encapsulated in the radio block to transmit, each Transmission Time Interval (TTI) is 20ms at present, so data have the time delay of 20ms at least.In order to reduce this section time delay, the RTTI method has been proposed, this method keeps the big or small constant of each radio block, reduces TTI by utilizing multicarrier or multi-slot.Wherein, RTTI comprises two kinds of methods, and frequency domain RTTI method promptly increases the multicarrier bandwidth at frequency domain; Time domain RTTI method promptly increases the multi-slot bandwidth in time domain.Fig. 3 is the schematic diagram of time domain RTTI method, and as shown in the figure: four lattice in circle are represented a radio block, and B1 is on 4 continuous T DMA frames, and every frame is with 1 time slot, and then the TTI of B1 equals 20ms, the situation when representing not use RTTI; B2 is on two continuous tdma frames, and every frame is with 2 continuous time slot, and the TTI of B2 equals 10ms; B3 is on a tdma frame, and with 4 continuous time slot, the TTI of B3 equals 5ms.Frequency domain RTTI method is that the data with original 4 time slots are placed on 2 frames of 2 carrier waves or on 1 frame of 4 carrier waves, distinguish the TTI of corresponding 10ms and 5ms like this.The emphasis of paying close attention to is the radio block under the 10msRTTI technology at present.
In order to reduce the propagation delay time of correct transmitting RLC piece, also adopt at present a kind of quick A CK/NACK method based on time synchronized, this method is by utilizing partial bytes to carry the purpose that short ACK/NACK message reaches quick feeding back ACK/NACK report in up/descending radio block.
Quick A CK/NACK method based on time synchronized takies the short ACK/NACK information of part ascending resource transmission, by polling request (Poll) as datum mark, synchronous corresponding Poll poll sign determines to report corresponding descending RLC piece reception condition, transmits descending RLC piece but can not replace polling mode.Because 1 radio block can carry 2 RLC data blocks at most, so need in the bitmap of short ACK/NACK information with the corresponding radio block of 2 bits, it specifically defines as shown in table 1:
| 00 | -build mistake-build is correct, but that TFI does not belong to current MS-build is correct, and TFI is also correct, but the data division decoding error |
| 01 | Build is correct, and TFI is also correct, but the 1st RLC blocks of data partial decoding of h mistake, the 2nd RLC blocks of data partial decoding of h is correct |
| 10 | Build is correct, and TFI is also correct, but the 1st RLC blocks of data partial decoding of h is correct, the 2nd RLC blocks of data partial decoding of h mistake |
| 11 | Build is correct, and TFI is also correct, and all RLC block data division is all decoded correctly |
Table 1
When having a plurality of TBF, the bitmap in the short ACK/NACK information can be represented the descending RLC piece reception condition of all TBF carryings.2 bits are to representing to be engraved in when a certain the reception condition of the radio block of the TTI (20ms or 10ms) on the corresponding a certain time slot.When the radio block that receives at moment Tx has polling request, the 1st pair of bit in the bitmap of the then corresponding short-and-medium ACK/NACK information of up-link wireless piece that sends represented the reception condition of radio block on first down channel that Tx constantly distributes, the 2nd pair of bit represented the reception condition of radio block on second down channel that Tx constantly distributes, analogizes backward with this.If in the bitmap of the short-and-medium ACK/NACK information of up-link wireless piece, also have the remaining bits space, then next can represent the reception condition of radio block on the 1st down channel that Tx-1 constantly (be 20ms or 10ms before the moment) distributes to bit, analogizes so backward.
Fig. 4 is the quick A CK/NACK method schematic diagram of prior art based on time synchronized, and its detailed process is:
The descending time slot that TBF1 distributes is TS0,1,2,3, and Tx MS constantly receives polling request (polling) at time slot TS2, and MS sends data at corresponding ascending time slot TS2, the short ACK/NACK information of this data carry, i.e. bitmap.Radio block on two bits (11) expression Tx moment descending time slot TS0 that the first row circle is lived correctly receives, the TFI that does not have corresponding MS in the radio block on the 2nd pair of bit (00) the expression descending time slot TS1, radio block on the 3rd pair of bit (11) the expression descending time slot TS2 correctly receives, and the radio block on the 4th pair of bit (00) the expression descending time slot TS3 receives mistake.The data division decoding of the 1st RLC piece of the radio block carrying on 2 bits (10) expression Tx-1 moment (during preceding 20ms) descending time slot TS2 that the 2nd row circle is lived is correct, the data division decoding error of the 2nd RLC piece.
Because of not containing BSN and need be corresponding in the short ACK/NACK information based on the quick A CK/NACK method of time synchronized with time slot, when adopting the RTTI technology, bitmap in the short ACK/NACK information needs modification with the corresponding relation of time slot, but the implication of bit value is identical when not adopting the RTTI technology in the bitmap.Because of needing 2 time slots, realizes jointly the radio block of 10ms RTTI technology, so during employing 10msRTTI technology, bit is to representing to be engraved in when a certain the reception condition of the radio block of the 10ms on corresponding certain a pair of time slot.
Quick A CK/NACK method based on time synchronized also can be applied in by the short ACK/NACK information of wireless communication system network side direction MS transmission, with respect to the difference that the wireless communication system network side sends short ACK/NACK information being: when this method is applied in by MS when the wireless communication system network side sends short ACK/NACK information, need MS to receive that the up-link wireless piece in appointment carries short ACK/NACK information behind the Poll by MS; And when this method is applied in by wireless communication system network side direction MS transmission weak point ACK/NACK information, because Radio Resource is distributed by the wireless communication system network side, so the wireless communication system network side can send on down channel at any time and carry the radio block of short ACK/NACK information. still, when no matter this method is applied in which kind of situation of above-mentioned two kinds of situations, all need carry an indication information, notify this radio block of the other side whether to carry and send short ACK/NACK information in the head part of radio block.
Fig. 5 is the quick A CK/NACK method schematic diagram based on time synchronized under the prior art RTTI technology: the bitmap lengths based on the quick A CK/NACK of time synchronized under the RTTI can be 20 bits, and the back is with the CRC of 6 bits.
But, employing also exists shortcoming based on the quick A CK/NACK method of time synchronized: first, if the wireless communication system network side is untimely to ascending resource scheduling, the block period and the wrong cycle that receives or lose between the block period of radio block that can cause carrying the radio block of short ACK/NACK information strengthen, at this moment, the entrained short ACK/NACK information of radio block can be occupied by the information that a large amount of useless indicating corrects receive radio block, caused short ACK/NACK information indicated efficiency to descend; The second, when only carrying a RLC data block in the radio block, also continuing has just wasted resource with radio block of 2 bit indications.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of method that whether correctly receives data that reports, and this method can improve the service efficiency of short ACK/NACK information.
According to above-mentioned purpose, technical scheme of the present invention is achieved in that
A kind of method that whether correctly receives data that reports, this method comprises:
A, recipient receive the radio block that transmit leg sends in current block cycle, determine whether to adopt 1 bit to indicate whether correctly to receive the information of the radio block of current block cycle, if, execution in step B; Otherwise, execution in step C;
B, receive direction transmit leg send and carry the radio block that short correct receptions/mistake receives AC/NNACK information, and this weak point ACK/NACK information is carried the information that 1 bit of employing indicates whether correctly to receive the radio block of current block cycle;
C, receive direction transmit leg send and carry the radio block of short ACK/NACK information, and this weak point ACK/NACK information is carried the information that 2 bits of employing indicate whether correctly to receive the radio block of current block cycle.
Before the process of the described information that determines whether to adopt the radio block that 1 bit indicates whether correctly to receive current block cycle of steps A, this method also comprises: the recipient determines whether to send to transmit leg the information of the radio block whether current block cycle correctly receive, if execution in step A is described to determine whether to adopt 1 bit to indicate whether correctly to receive the step of information of the radio block of current block cycle; Otherwise, next block period as current block cycle, is continued the step that execution in step A receives radio block.
The described process that need send the information of the radio block whether current block cycle correctly receive to transmit leg that determines whether is:
Transmit leg is the wireless communication system network side, and the recipient is a terminal, when terminal receives the polling request of wireless communication system network side transmission, determines and need send the information that whether correctly receive this radio block to the wireless communication system network side;
Perhaps transmit leg is a terminal, and the recipient is the wireless communication system network side, when the parsing of wireless communication system network side obtains wrong reception or loses radio block, determines and need send the information that whether correctly receive this radio block to terminal.
The information that steps A is described to determine whether to adopt 1 bit to indicate whether correctly to receive the radio block of current block cycle determines that according to the strategy that is provided with the strategy of this setting is:
When the radio block of recipient's reception carries 1 Radio Link control RLC data block, adopt 1 bit to indicate whether correctly to receive the information of radio block;
When perhaps 2 RLC data blocks carrying of the radio block that receives as the recipient have identical accepting state, adopt 1 bit to indicate whether correctly to receive the information of radio block.
Also carry sign in the described short ACK/NACK information, this sign is used to indicate the information of indicating radio block whether correctly to receive with several bits.
This method further comprises:
After transmit leg receives the radio block that carries short ACK/NACK information, the sign of the information whether radio block correctly receive is indicated in the indication of carrying according to this weak point ACK/NACK information with several bits, after determining to indicate the information whether radio block correctly receive with several bits, resolve the information that whether correctly receives the radio block of current block cycle that this weak point ACK/NACK information is carried, retransmit the radio block that receives mistake or lose and give the recipient.
The process of information that 1 bit of the described employing of step B indicates whether correctly to receive the radio block of current block cycle is:
This 1 bit is provided with a value, and the Temporary Block Flow indication TFI indication in this radio block decoding failure of this value representation or this radio block build does not belong to the recipient; This 1 bit is provided with another value, and this radio block of this value representation is decoded correctly and the indication of the TFI in this radio block build belongs to the recipient.
In step B, if idle bit is arranged in the described short ACK/NACK information, this method also comprises:
The information that will whether correctly receive with the radio block of previous or several block periods of the current block cycle of 1 bit indication is carried in this weak point ACK/NACK information;
In step C, if idle bit is arranged in the described short ACK/NACK information, this method also comprises:
The information that will whether correctly receive with the radio block of previous or several block periods of the current block cycle of 2 bits indication is carried in this weak point ACK/NACK information.
Also carry current point in time in the described short ACK/NACK information.
The described current point in time that carries is the piece BN of radio block mark for the wireless communication system network side, and this radio block carries two Radio Links control RLC data blocks, and recording process is:
Travelling carriage is decoded to receiving radio block, the decoding of RLC build is correct, the RLC data block decoding error, and the Temporary Block Flow indication TFI of travelling carriage by the RLC build judges that this RLC piece is an oneself Temporary Block Flow TBF, and the BN of radio block that then will carry the RLC piece of this mistake reception is recorded as time point.
The described time point that carries is the piece BN of radio block mark for the wireless communication system network side, and this radio block carries two Radio Links control RLC data blocks, and recording process is:
Travelling carriage is decoded to receiving radio block, and is correct to the decoding of RLC build, indicates TFI to judge that this RLC piece is not the Temporary Block Flow TBF of oneself by the Temporary Block Flow of RLC build; Perhaps, can't judge whether it is the TBF of this RLC piece oneself to RLC build decoding failure; The failure of all decoding of perhaps whole radio block; Travelling carriage continues to receive the radio block of postorder, in case when correctly receiving a radio block, whether the RLC data block of judging this radio block carrying is discontinuous with the piece sequence number BSN of the RLC data block of the radio block carrying that correctly receives before, if then the BN with this radio block is recorded as time point.
Before the BN with this radio block was recorded as time point, this method also comprised:
Whether the RLC data block of judging the carrying of this radio block distributes to first descending time slot transmission of travelling carriage by the wireless communication system network side in the block period of this radio block, if be recorded as time point after then the BN of this radio block being subtracted 1; Otherwise, the BN of this radio block is recorded as time point.
The described current point in time that carries is the piece BN of radio block mark for the wireless communication system network side, and this radio block carries two Radio Links control RLC data blocks, and recording process is:
Travelling carriage is decoded to receiving radio block, and is correct to the decoding of RLC build, indicates TFI to judge that this RLC piece is not the Temporary Block Flow TBF of oneself by the Temporary Block Flow of RLC build; Perhaps, can't judge whether it is the TBF of this RLC piece oneself to RLC build decoding failure; The failure of all decoding of perhaps whole RLC piece; Travelling carriage continues to receive the radio block of postorder, in case receiving an and TFI by RLC build correct to RLC build decoding judges when this RLC piece is not the radio block of TBF of oneself, whether the RLC data block of judging this radio block carrying is discontinuous with the piece sequence number BSN of the RLC data block of the radio block carrying that correctly receives before, if, after then the BSN of the RLC data block that this radio block is carried subtracted 1, the BN that BSN is subtracted the radio block at the RLC data block place after 1 was recorded as time point.
Before the BN of the radio block at described RLC data block place with BSN-1 was recorded as time point, this method also comprised:
Judge that BSN subtracts whether 1 RLC data block distributes to travelling carriage by the wireless communication system network side in BSN subtracts the block period of 1 RLC data block place radio block first descending time slot transmission, if the BN that then BSN is subtracted the radio block at 1 RLC data block place subtracts 1 and is recorded as time point; Otherwise the BN that BSN is subtracted the radio block at the RLC data block place after 1 is recorded as time point.
Described current point in time is the side-play amount of time point, and recording process is:
The side-play amount that the travelling carriage mistake in computation receives or loses the block period of the block period of radio block and the ascending time slot place radio block that the wireless communication system network side is distributed to this travelling carriage is recorded as current point in time with this side-play amount.
Described short ACK/NACK information also comprises a plurality of ACK/NACK message segments in the length of setting, these a plurality of ACK/NACK message segments are carried the indicated respectively information that whether correctly receives radio block of different masses cycle.
Described this weak point ACK/NACK information comprises that also a plurality of ACK/NACK message segments are to determine by a plurality of message segment signs that are provided with at the radio block that carries this weak point ACK/NACK information.
Described short ACK/NACK information also comprises accessory ID, and this accessory ID is the odd even sequence number of the radio block of current block cycle.
Described short ACK/NACK information also comprises CRC CRC information.
The data of described short ACK/NACK information in radio block are encoded.
From such scheme as can be seen, when the radio block that the present invention sends to the recipient when transmit leg included only a RLC data block, whether the recipient used 1 bit to identify this RLC data block in short ACK/NACK information and correctly receives; When the radio block that sends to the recipient when transmit leg comprised two RLC data blocks, whether the recipient used 2 bits to identify this RLC data block in short ACK/NACK information and correctly receives.In the present invention, when the radio block that sends to the recipient when transmit leg comprises two RLC data blocks, these two RLC data blocks are all correctly received, perhaps these two RLC data blocks decoding error all, perhaps determine to represent with 1 bit whether radio block correctly receives, also can in short ACK/NACK information, represent 1 radio block with 1 bit other situations recipient.Like this, method provided by the invention has just improved the service efficiency of short ACK/NACK information.Further, the present invention drives quick A CK/NACK method the time based on time synchronized of can also adopting: when MS detects the radio block mistake reception of descending TBF or loses, the record current block cycle is as the event time point, during according to the ascending resource of prior art indication, initiatively utilize up RLC/MAC piece to carry the reception condition of the descending TBF of short ACK/NACK feedback information as the wireless communication system network side immediately.Like this, also can improve the service efficiency of short ACK/NACK information.
Description of drawings
The radio block number schematic diagram of Fig. 1 in a TTI, transmitting;
Fig. 2 adopts the method flow diagram of polling mode transmitting RLC piece for prior art;
Fig. 3 is the schematic diagram of time domain RTTI method;
Fig. 4 is the quick A CK/NACK method schematic diagram of prior art based on time synchronized;
Fig. 5 is the quick A CK/NACK method schematic diagram based on time synchronized under the prior art RTTI technology;
Fig. 6 is the schematic diagram of 1 bit of usefulness provided by the invention or 2 short ACK/NACK information of bit transmission;
Fig. 7 reports the method flow diagram that whether correctly receives data for the present invention to the wireless communication system network side;
Fig. 8 reports the method embodiment flow chart that whether correctly receives data for the present invention to the wireless communication system network side;
Fig. 9 is the embodiment one of recording events time point of the present invention;
Figure 10 is the embodiment two of recording events time point of the present invention;
Figure 11 is the embodiment three of recording events time point of the present invention;
The radio block number schematic diagram of Figure 12 in a TTI, adopting the RTTI technology to transmit;
Figure 13 is structure embodiment one schematic diagram of ACK/NACK information of the present invention;
Figure 14 is the quick A CK/NACK feedback method schematic diagram under the RTTI that does not contain the Address field provided by the invention;
Figure 15 is the schematic diagram of MS receiving radio data piece provided by the invention;
Figure 16 is structure embodiment two schematic diagrames of ACK/NACK information of the present invention.
Embodiment
In order to make the purpose, technical solutions and advantages of the present invention clearer, below lift specific embodiment and, the present invention is described in more detail with reference to accompanying drawing.
In order to improve the service efficiency of short ACK/NACK information, the present invention can work as radio block that transmit leg sends to the recipient when including only a RLC data block, and whether the recipient uses 1 bit to identify this RLC data block and correctly receive; When the radio block that sends to the recipient when transmit leg comprised two RLC data blocks, whether the recipient used 2 bits to identify this RLC data block and correctly receives.Certainly, transmit leg can also carry another sign when sending radio block, the information whether this sign indication indicates radio block correctly to receive with several bits, as: the information whether " 0 " expression is correctly received with 1 bit indication radio block; The information whether " 1 " expression is correctly received with 2 bit indication radio blocks.
When transmit leg adopted the MCS-7/8/9 type to send radio block, a radio block carried 2 RLC data blocks; When transmit leg did not adopt the MCS-7/8/9 type to send radio block, a radio block carried 1 RLC data block.
In the present invention, when the radio block that sends to the recipient when transmit leg comprises two RLC data blocks, these two RLC data blocks are all correctly received, perhaps these two RLC data blocks decoding error all, perhaps determine and to represent that with 1 bit whether radio block correctly receives, and just can represent 1 radio block with 1 bit other situations recipient.Here, " other situations " should comprise that transmit leg adopts the MCS-7/8/9 type to send radio block, and RLC data block wherein is 1 pair 1 mistake, but these radio blocks are very low in the ratio that all need send in the radio block of short ACK/NACK information, and this moment, the recipient can consider to obtain the efficient of higher short ACK/NACK information under the situation that suitably increases unnecessary re-transmission.
In the present invention, transmit leg can be wireless communication system network side or MS, and correspondingly, the recipient can be MS or wireless communication system network side.
Fig. 6 is the schematic diagram of 1 bit of usefulness provided by the invention or 2 short ACK/NACK information of bit transmission, as shown in the figure: send radio block when transmit leg adopts the MCS-7/8/9 type, adopt 2 bits to send weak point ACK/NACK information; When transmit leg adopts MCS-1/2/3/4/5/6, adopt 1 bit to send short ACK/NACK information.
Whether when correctly being received with 1 bit indication radio block, the value of corresponding bit is as shown in table 2:
| ?0 | (RLC build decoding failure or build are correctly decoded but data division decoding failure)-this radio block decoding is correct in-this radio block decoding failure, but TFI does not belong to the active user in the build |
| ?1 | This radio block decoding is correct, and TFI belongs to the active user in the build |
Table 2
Fig. 7 reports the method flow diagram that whether correctly receives data for the present invention to the wireless communication system network side, and its concrete steps are:
Step 702, recipient determine whether to adopt 1 bit to indicate whether correctly to receive the information of the radio block of current block cycle, if change step 703 over to; If not, change step 704 over to.
The information that determines whether to adopt 1 bit to indicate whether correctly to receive the radio block of current block cycle can be determined according to predefined strategy, when carrying 1 RLC data block when radio block, adopt 1 bit to indicate whether correctly to receive the information of radio block; When 2 RLC data blocks that carry when radio block have identical accepting state (all correct receive or all wrong receive or all lose), adopt 1 bit to indicate whether correctly to receive the information etc. of radio block.
If should also have idle bit in short ACK/NACK information, the method that then can adopt step 703 is carried at the information whether radio block of previous or several block periods of current block cycle correctly receives in this weak point ACK/NACK information.
Step 704, receive direction transmit leg send carries the radio block of short ACK/NACK information, and this weak point ACK/NACK information is carried and adopted 2 bits to indicate whether correctly to receive the information of a radio block and indicate the sign of indicating the information whether radio block correctly receive with 2 bits.
If should also have idle bit in short ACK/NACK information, the method that then can adopt step 704 is carried at the information whether radio block of previous or several block periods of current block cycle correctly receives in this weak point ACK/NACK information.
Same as the prior art, if transmit leg is the wireless communication system network side, the recipient is MS, then in step 701, determine whether that the process that need send the information whether correctly receive this radio block to transmit leg is: when MS receives the Poll that the wireless communication system network side sends, determine and to send the information that whether correctly receive this radio block to the wireless communication system network side.If transmit leg is MS, the recipient is the wireless communication system network side, then in step 701, determine whether that the process that need send the information whether correctly receive this radio block to transmit leg is: resolve when the wireless communication system network side and obtain wrongly receiving or when losing radio block, determining and to send the information that whether correctly receive this radio block to MS.
The present invention is in order to overcome the shortcoming one of employing based on the quick A CK/NACK method of time synchronized, also on the basis of Fig. 7, proposed to adopt time to drive quick A CK/NACK method based on time synchronized. following is the wireless communication system network side with transmit leg, and the recipient is elaborated for MS.
Employing based on the process of the time driving quick A CK/NACK method of time synchronized is: when MS detects the RLC data block mistake reception of descending TBF or loses, the record current block cycle is as the event time point, during according to the ascending resource of prior art indication, initiatively utilize uplink data block to carry the reception condition of the descending TBF of short ACK/NACK feedback information as the cordless communication network side immediately.In this weak point ACK/NACK information, carry the event time point identification, and bitmap can adopt the described method indication of Fig. 7.By event time point with based on the bitmap of time slot correspondence, the reception condition of which descending RLC piece that the short ACK/NACK information that the wireless communication system network side can be determined to report is TBF.
In the present invention, the bit number that short ACK/NACK information takies in uplink data block can be set, and for guaranteeing the reliability of short ACK/NACK information, the several bits in the bit number that can also it is shared are as check code, as CRC etc.In order to indicate uplink data block whether to carry ACK/NACK information, the present invention can also utilize 1 bit in the idle bit to indicate in the build to uplink data block.
Fig. 8 reports the method embodiment flow chart that whether correctly receives data for the present invention to the wireless communication system network side, and its concrete steps are:
Certainly, when having the ascending resource that the wireless communication system network side distributes to MS, just can directly adopt ascending time slot transmission up-link wireless piece corresponding to the block period of the current radio block that receives corresponding to the ascending time slot of the block period of the current radio block that receives.This current radio block that receives is that mistake receives radio block or loses radio block.
After step 804, wireless communication system network side joint are received the up-link wireless piece of MS transmission, determine the descending radio block that the MS mistake receives or loses, retransmit these descending radio blocks to MS according to the short ACK/NACK information of carrying.
In Fig. 8,, then can directly this weak point ACK/NACK information be carried in the ACK/NACK report and send to the wireless communication system network side if the ascending time slot MS of the block period correspondence of the current radio block that receives does not send up-link wireless storehouse piece.
In addition, when adopting method provided by the invention, the radio block that also can carry out polling mode sends.
Time based on time synchronized provided by the invention drives the event time point of quick A CK/NACK method can be with the BN record of the radio block of carrying RLC data block, and MS produces Event triggered, and the situation that promptly will send short ACK/NACK information has two kinds.
First kind, after MS receives descending radio block, correct to entrained RLC build decoding, but RLC blocks of data partial decoding of h mistake, if MS judges that by the TFI of RLC build this RLC piece is the TBF of oneself, the BN that then will carry the radio block of the RLC data block that this mistake receives is recorded as time point, and reports (if this ascending time slot has been distributed to MS) short ACK/NACK information at the ascending time slot of the descending time slot correspondence that sends this descending RLC piece immediately.
Second kind, MS decodes to receiving radio block, and is correct to RLC build decoding, and the TFI by the RLC build judges that this RLC piece is not the TBF of oneself; Perhaps, can't judge whether it is the TBF of this RLC piece oneself to RLC build decoding failure; The failure of all decoding of perhaps whole radio block; Travelling carriage continues to receive the radio block of postorder, in case when correctly receiving a radio block, whether the RLC data block of judging this radio block carrying is discontinuous with the piece sequence number BSN of the RLC data block of the radio block carrying that correctly receives before, if then the BN with this radio block is recorded as time point.
Certainly, before the BN with this radio block is recorded as time point, also comprise: whether the RLC data block of judging the carrying of this radio block distributes to first descending time slot transmission of travelling carriage by the wireless communication system network side in the block period of this radio block, if then the BN-1 with this radio block is recorded as time point; Otherwise, the BN of this radio block is recorded as time point.
In second kind of situation, MS decodes to receiving radio block, and is correct to RLC build decoding, and the TFI by the RLC build judges that this RLC piece is not the TBF of oneself; Perhaps, can't judge whether it is the TBF of this RLC piece oneself to RLC build decoding failure; The failure of all decoding of perhaps whole RLC piece; Travelling carriage continues to receive the radio block of postorder, in case receiving an and TFI by RLC build correct to RLC build decoding judges when this RLC piece is not the radio block of TBF of oneself, whether the RLC data block of judging this radio block carrying is discontinuous with the piece sequence number BSN of the RLC data block of the radio block carrying that correctly receives before, if, then behind the BSN-1 with the RLC data block of this radio block carrying, the BN of the radio block at the RLC data block place of BSN-1 is recorded as time point.
Correspondingly, the BN of the radio block at the RLC data block place of BSN-1 is recorded as before the time point, also comprise: whether the RLC data block of judging BSN-1 distributes to first descending time slot transmission of travelling carriage by the wireless communication system network side in the block period of the RLC data block place of BSN-1 radio block, if then the BN-1 with the radio block at the RLC data block place of BSN-1 is recorded as time point; Otherwise, the BN of the radio block at the RLC data block place of BSN-1 is recorded as time point.
Describe for two examples.Fig. 9 is embodiment one schematic diagram of recording events time point of the present invention, as shown in the figure: v represents correctly to receive radio block;? the decoding error of representing whole radio block can't distinguish whether be the radio block that sends to MS, and what no represented to receive is not the radio block of MS oneself.As can be seen from Figure 9, the radio block decoding error to receiving on MS first time slot in the cycle that identifies with BN3 of being distributed, it is correct on second time slot the radio block that receives to be decoded, so the recording events time point is BN3.
Embodiment two schematic diagrames that Figure 10 put for writing time of the present invention, what receive on MS first time slot in the cycle that identifies with BN3 of being distributed is not the radio block of MS oneself, it is correct on second time slot the radio block that receives to be decoded, so the recording events time point is BN2.
Recording events time point of the present invention not only adopts the BN of radio block, can also adopt side-play amount to carry out record, and the process of record is:
The side-play amount that the MS mistake in computation receives or loses the block period of the block period of radio block and the ascending time slot place radio block that the wireless communication system network side is distributed to this travelling carriage is recorded as current point in time with this side-play amount.This side-play amount generally takies 1 to 2 bit.
Lifting an object lesson describes, embodiment three schematic diagrames that Figure 11 put for writing time of the present invention: a RLC data block is correctly received by MS, its BSN is BSN1, occur decoding error afterwards and be not the RLC data block of MS oneself, correctly receive the RIC data block again, its BSN is BSN3, because BSN1 and BSN3 are discontinuous, lose RLC data block or the wrong RLC data block that receives in the middle of the expression, determine the BN3-1 of event time point for the RLC data block place radio block of BSN3, be BN2, because the descending time slot in the BN2 correspondence is not given the MS Resources allocation, and has distributed resource at the descending time slot of BN3 correspondence to MS, so side-play amount is set to 01, thereby when sending weak point ACK/NACK information, whether the data block of indication BN2 is correctly received.
Below the present invention is specified.
Radio block under non-RTTI technology is set to B0～B11, as shown in Figure 2, can be decided to be B0～B23 at the radio block of 10ms RTTI technology, as shown in figure 12.
The huge frame of cause 1 hyperstructure (hyperframe)=1024 are structure (superframe)=many structures of 1024 * 51 * 52-(multiframe) very, so the present invention can also be by the odd even sequence number of record 52-multiframe in hyperframe, as the accessory ID (Address) of event time point.Therefore, the form of ACK/NACK information as shown in figure 13, this weak point ACK/NACK information is carried in the up-link wireless piece, immediately following behind the RLC build, comprise Address, BSN NACK, bitmap and CRC, wherein, Address and CRC are that optionally BSN NACK and bitmap must carry.
With length is that the short ACK/NACK information of 24 bits is example, specifies the form and the implication of carrying short ACK/NACK information in the RLC/MAC piece, as shown in table 3:
| Field | Length | Purposes |
| Address | The 0-1 bit | The 0:ACK/NACK sequence number is the 52-multiframe of even number; The 1:ACK/NACK sequence number is the 52-multiframe of odd number. |
| BN_Nack | The 4-5 bit | Go out the BSN of active or the wrong RLC piece place 52-multiframe that receives.4 bits are used for non-RTTI situation; 5bits is used for 10ms RTTI situation. |
| Bitmap | The 15-17 bit | The bitmap of BN_NACK place RLC bitmap block and RLC piece before, concrete implication sees Table 2 with the bitmap based on time synchronized. |
| |
3 bits | Cover the CRC check of 3 bit ACK/NACK. |
Table 3
Figure 14 is that the B5 place detects the reception of RLC piece mistake for the RTTI that does not contain the Address field provided by the invention quick A CK/NACK feedback method schematic diagram down: MS in the piece sequence number, the radio block BN of this RLC of recording carrying then, be that B5 is the event time point, bitmap is according to the reception condition of corresponding feedback time point of time slot and RLC piece before.2 bits (10) of living at the 1st row circle are illustrated in B5 constantly, descending time slot TS0﹠amp; First RLC piece in the radio block on 1 receives correct, and second RLC piece receives mistake; The 2nd pair of bit (11) expression descending time slot TS2﹠amp; Radio block on 3 receives correct and is the TBF of oneself; 2 bits (00) of living at the 2nd row circle are illustrated in the moment B4 that B5 last radio block constantly sends, descending time slot TS0﹠amp; Radio block on 1 receives mistake.
In the present invention, can also partly reset the bitmap in the short ACK/NACK information, be set to the reception condition of corresponding 1 radio block of 1 bit, as second kind of form of the bitmap among Figure 14, like this, can save bit space, but in the time can carrying two RLC data blocks, expression just there is not corresponding 1 radio block of 2 bits so meticulous.
In the present invention, when descending RLC data block periodic scheduling bigger at interval, wrong receive or to lose the block period in the time interval of descending radio block bigger perhaps appears, only can't represent the descending TBF reception condition that the block period span is bigger with 1 BN point instruction time, as shown in figure 15, hypographous radio block represents it is the radio block that MS will receive, other radio blocks represent it is the radio block that other MS will receive, at this moment short ACK/NACK information just can be set to multistage, promptly to hypographous radio block with different short ACK/NACK message segments and adopt different BN to represent, increase the follow-up ACK/NACK message segment whether same format is arranged of extended bit indication.When extended bit is 1 bit, value is to represent the follow-up identical ACK/NACK message segment of form that do not have at 0 o'clock; Value is to represent the follow-up identical ACK/NACK message segment of form that has at 1 o'clock, and the length of each ACK/NACK message segment is fixed, but total length is no more than the value of setting, as shown in figure 16.
The short ACK/NACK information that is carried at up RLC/MAC piece among the present invention can be encoded with the data division of RLC/MAC piece, also can separate independent coding.Be not subjected to the influence of incremental redundancy when encoding together.
Employing also can be applied in the situation that is sent short ACK/NACK information by wireless communication system network side direction MS based on the time driving quick A CK/NACK method of time synchronized.
From method provided by the invention as can be seen, adopt event-driven more timely, also save resource; Can feed back a plurality of radio block reception conditions, but can not take too much data space, more save resource because of the BN of a plurality of radio blocks; Even a plurality of radio blocks are made mistakes, the length of the short ACK/NACK information in the data can be fixed, and avoids short ACK/NACK information to take too much upstream bandwidth; Indicated time point in the short ACK/NACK information, can lump together coding with data division; Even carry the re-transmission that makes mistakes of the data block of short ACK/NACK information, as long as retransmit in 2 52 multiframe period 480ms (when increasing Address), the short ACK/NACK information in the data block is just still effective; The short ACK/NACK information of segmentation can be fed back wider descending reception condition more flexibly in limited length; Adopt a radio block in the short ACK/NACK information of 1 bit indication whether correctly to receive, save resource and improved the service efficiency of short ACK/NACK information.
The above only is preferred embodiment of the present invention, not in order to restriction the present invention, all any modifications of being made within the spirit and principles in the present invention, is equal to and replaces and improvement etc., all should be included within protection scope of the present invention.
Claims (20)
1. one kind reports the method that whether correctly receives data, it is characterized in that, this method comprises:
A, recipient receive the radio block that transmit leg sends in current block cycle, determine whether to adopt 1 bit to indicate whether correctly to receive the information of the radio block of current block cycle, if, execution in step B; Otherwise, execution in step C;
B, receive direction transmit leg send and carry the radio block that short correct receptions/mistake receives ACK/NACK information, and this weak point ACK/NACK information is carried the information that 1 bit of employing indicates whether correctly to receive the radio block of current block cycle;
C, receive direction transmit leg send and carry the radio block of short ACK/NACK information, and this weak point ACK/NACK information is carried the information that 2 bits of employing indicate whether correctly to receive the radio block of current block cycle.
2. the method for claim 1, it is characterized in that, before the process of the described information that determines whether to adopt the radio block that 1 bit indicates whether correctly to receive current block cycle of steps A, this method also comprises: the recipient determines whether to send to transmit leg the information of the radio block whether current block cycle correctly receive, if execution in step A is described to determine whether to adopt 1 bit to indicate whether correctly to receive the step of information of the radio block of current block cycle; Otherwise, next block period as current block cycle, is continued the step that execution in step A receives radio block.
3. method as claimed in claim 2 is characterized in that, the described process that need send the information of the radio block whether current block cycle correctly receive to transmit leg that determines whether is:
Transmit leg is the wireless communication system network side, and the recipient is a terminal, when terminal receives the polling request of wireless communication system network side transmission, determines and need send the information that whether correctly receive this radio block to the wireless communication system network side;
Perhaps transmit leg is a terminal, and the recipient is the wireless communication system network side, when the parsing of wireless communication system network side obtains wrong reception or loses radio block, determines and need send the information that whether correctly receive this radio block to terminal.
4. the method for claim 1 is characterized in that, the information that steps A is described to determine whether to adopt 1 bit to indicate whether correctly to receive the radio block of current block cycle determines that according to the strategy that is provided with the strategy of this setting is:
When the radio block of recipient's reception carries 1 Radio Link control RLC data block, adopt 1 bit to indicate whether correctly to receive the information of radio block;
When perhaps 2 RLC data blocks carrying of the radio block that receives as the recipient have identical accepting state, adopt 1 bit to indicate whether correctly to receive the information of radio block.
5. the method for claim 1 is characterized in that, also carries sign in the described short ACK/NACK information, and this sign is used to indicate the information of indicating radio block whether correctly to receive with several bits.
6. method as claimed in claim 5 is characterized in that, this method further comprises:
After transmit leg receives the radio block that carries short ACK/NACK information, the sign of the information whether radio block correctly receive is indicated in the indication of carrying according to this weak point ACK/NACK information with several bits, after determining to indicate the information whether radio block correctly receive with several bits, resolve the information that whether correctly receives the radio block of current block cycle that this weak point ACK/NACK information is carried, retransmit the radio block that receives mistake or lose and give the recipient.
7. the method for claim 1 is characterized in that, the process of information that 1 bit of the described employing of step B indicates whether correctly to receive the radio block of current block cycle is:
This 1 bit is provided with a value, and the Temporary Block Flow indication TFI indication in this radio block decoding failure of this value representation or this radio block build does not belong to the recipient; This 1 bit is provided with another value, and this radio block of this value representation is decoded correctly and the indication of the TFI in this radio block build belongs to the recipient.
8. the method for claim 1 is characterized in that, in step B, if idle bit is arranged in the described short ACK/NACK information, this method also comprises:
The information that will whether correctly receive with the radio block of previous or several block periods of the current block cycle of 1 bit indication is carried in this weak point ACK/NACK information;
In step C, if idle bit is arranged in the described short ACK/NACK information, this method also comprises:
The information that will whether correctly receive with the radio block of previous or several block periods of the current block cycle of 2 bits indication is carried in this weak point ACK/NACK information.
9. the method for claim 1 is characterized in that, also carries current point in time in the described short ACK/NACK information.
10. method as claimed in claim 9 is characterized in that, the described current point in time that carries is the piece BN of radio block mark for the wireless communication system network side, and this radio block carries two Radio Links control RLC data blocks, and recording process is:
Travelling carriage is decoded to receiving radio block, the decoding of RLC build is correct, the RLC data block decoding error, and the Temporary Block Flow indication TFI of travelling carriage by the RLC build judges that this RLC piece is an oneself Temporary Block Flow TBF, and the BN of radio block that then will carry the RLC piece of this mistake reception is recorded as time point.
11. method as claimed in claim 9 is characterized in that, the described time point that carries is the piece BN of radio block mark for the wireless communication system network side, and this radio block carries two Radio Links control RLC data blocks, and recording process is:
Travelling carriage is decoded to receiving radio block, and is correct to the decoding of RLC build, indicates TFI to judge that this RLC piece is not the Temporary Block Flow TBF of oneself by the Temporary Block Flow of RLC build; Perhaps, can't judge whether it is the TBF of this RLC piece oneself to RLC build decoding failure; The failure of all decoding of perhaps whole radio block; Travelling carriage continues to receive the radio block of postorder, in case when correctly receiving a radio block, whether the RLC data block of judging this radio block carrying is discontinuous with the piece sequence number BSN of the RLC data block of the radio block carrying that correctly receives before, if then the BN with this radio block is recorded as time point.
12. method as claimed in claim 11 is characterized in that, before the BN with this radio block was recorded as time point, this method also comprised:
Whether the RLC data block of judging the carrying of this radio block distributes to first descending time slot transmission of travelling carriage by the wireless communication system network side in the block period of this radio block, if be recorded as time point after then the BN of this radio block being subtracted 1; Otherwise, the BN of this radio block is recorded as time point.
13. method as claimed in claim 9 is characterized in that, the described current point in time that carries is the piece BN of radio block mark for the wireless communication system network side, and this radio block carries two Radio Links control RLC data blocks, and recording process is:
Travelling carriage is decoded to receiving radio block, and is correct to the decoding of RLC build, indicates TFI to judge that this RLC piece is not the Temporary Block Flow TBF of oneself by the Temporary Block Flow of RLC build; Perhaps, can't judge whether it is the TBF of this RLC piece oneself to RLC build decoding failure; The failure of all decoding of perhaps whole RLC piece; Travelling carriage continues to receive the radio block of postorder, in case receiving an and TFI by RLC build correct to RLC build decoding judges when this RLC piece is not the radio block of TBF of oneself, whether the RLC data block of judging this radio block carrying is discontinuous with the piece sequence number BSN of the RLC data block of the radio block carrying that correctly receives before, if, after then the BSN of the RLC data block that this radio block is carried subtracted 1, the BN that BSN is subtracted the radio block at the RLC data block place after 1 was recorded as time point.
14. method as claimed in claim 13 is characterized in that, before the BN of the radio block at described RLC data block place with BSN-1 was recorded as time point, this method also comprised:
Judge that BSN subtracts whether 1 RLC data block distributes to travelling carriage by the wireless communication system network side in BSN subtracts the block period of 1 RLC data block place radio block first descending time slot transmission, if the BN that then BSN is subtracted the radio block at 1 RLC data block place subtracts 1 and is recorded as time point; Otherwise the BN that BSN is subtracted the radio block at the RLC data block place after 1 is recorded as time point.
15. method as claimed in claim 9 is characterized in that, described current point in time is the side-play amount of time point, and recording process is:
The side-play amount that the travelling carriage mistake in computation receives or loses the block period of the block period of radio block and the ascending time slot place radio block that the wireless communication system network side is distributed to this travelling carriage is recorded as current point in time with this side-play amount.
16. the method for claim 1, it is characterized in that, described short ACK/NACK information also comprises a plurality of ACK/NACK message segments in the length of setting, these a plurality of ACK/NACK message segments are carried the indicated respectively information that whether correctly receives radio block of different masses cycle.
17. method as claimed in claim 16 is characterized in that, described this weak point ACK/NACK information comprises that also a plurality of ACK/NACK message segments are to determine by a plurality of message segment signs that are provided with at the radio block that carries this weak point ACK/NACK information.
18. the method for claim 1 is characterized in that, described short ACK/NACK information also comprises accessory ID, and this accessory ID is the odd even sequence number of the radio block of current block cycle.
19. the method for claim 1 is characterized in that, described short ACK/NACK information also comprises CRC CRC information.
20. the method for claim 1 is characterized in that, the data of described short ACK/NACK information in radio block are encoded.
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| US8527829B2 (en) * | 2008-04-21 | 2013-09-03 | Apple Inc. | Methods and systems for HARQ protocols |
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| ATE547918T1 (en) * | 2008-11-07 | 2012-03-15 | Siemens Ag | METHOD FOR DATA TRANSMISSION IN A LOCAL NETWORK |
| CN102118190B (en) * | 2009-12-31 | 2014-02-05 | 中兴通讯股份有限公司 | General PCU frame number synchronizing method and system suitable for time domain reduced transmission time interval |
| CN104518852B (en) * | 2013-09-29 | 2018-06-15 | 普天信息技术研究院有限公司 | A kind of transmission feedback method |
| CN105099607A (en) * | 2014-05-09 | 2015-11-25 | 深圳市中兴微电子技术有限公司 | Fault tolerance method and apparatus for microwave transmission |
| WO2017122267A1 (en) * | 2016-01-12 | 2017-07-20 | 富士通株式会社 | Wireless communication device, wireless communication system, and wireless communication method |
| CN112506696A (en) * | 2021-01-22 | 2021-03-16 | 马瑞利汽车电子(广州)有限公司 | Method for preventing request between modules from being lost |
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