CN101174927B - Feedback method for processing data accepting state and its receiving and transmitting device - Google Patents
Feedback method for processing data accepting state and its receiving and transmitting device Download PDFInfo
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- CN101174927B CN101174927B CN2006101380501A CN200610138050A CN101174927B CN 101174927 B CN101174927 B CN 101174927B CN 2006101380501 A CN2006101380501 A CN 2006101380501A CN 200610138050 A CN200610138050 A CN 200610138050A CN 101174927 B CN101174927 B CN 101174927B
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Abstract
The present invention discloses a feedback method for processing the data receiving state; a receiving end emits a data block to an emitting end and the data block carries the receiving bitmap which needs to be fed back and the boundary information of the most novel end of the receiving bitmap; the receiving bitmap comprises one or a plurality of continuous receiving state information of data block. In addition, the present invention also discloses a data receiver and a data emitter. With the technical proposal of the present invention, the data block corresponding to the bitmap which is fed back to the data emitting end by the data receiving end is provided with an accurate receiving state and the data emitting end implement reemission based on the state which is correct.
Description
Technical field
The present invention relates generally to the mobile technology communications field, relates in particular to a kind of feedback method and feedback device of data receiving state.
Background technology
In the uplink and downlink data transmission procedure of present GSM; Base station and travelling carriage are for to the other side's feedback data accepting state; Used this technology of reception bitmap comparatively at large, receiving bitmap is to indicate corresponding data block accepting state through its each (bit) that comprises.Generally; The data receiver can be initiatively or when the request of reply data transmit leg; To comprise receive bitmap related information transmission to data receiver; Thereby make data receiver can learn the accepting state of data receiver, and then data receiver can be retransmitted the incorrect data block that receives to the data receiver in view of the above to data block transmitted.
Content directly related with bitmap in the message of a kind of receive direction opposite end feedback data piece accepting state (message is received in correct wrong misconnection like the ACK/NACK-) form is as shown in table 1.Each data block all has a sequence number BSN (Block Sequence Number, piece sequence number),
Table 1
Need explanation; What above-mentioned " BSN_NACK " indicated on the one hand bitmap (BSN_MAP) holds the border the most always; According to hold the most always the border can know by inference any one status bit message in the bitmap corresponding be which data block; Therefore also be called SSN (Starting Sequence Number, homing sequence number) in the standard; On the other hand, holding the accepting state of the corresponding data block in border the most always is wrong accepting state.Transmit because transmit leg is the order according to BSN, therefore the recipient also is the data block that receives corresponding order in time successively in theory, and the data block of the up-to-date transmission of transmit leg also should be the data block that the recipient receives at first, after this and the like.Describe for the ease of unified, with newly/old state shows the transmitting time sequencing between the data block.For example, suppose that transmit leg sends first data block earlier, send second data block then, the recipient just can think so, and second data block is a data block of upgrading than first data block, and on the contrary, first data block is the data block older than second data block.
Explain below in conjunction with a more concrete example.See also Fig. 1, it is the transmission course sketch map of sending direction recipient transmission data block.The data block BSN that schematically drawn among the figure is followed successively by 16 data blocks of (0-f), and transmit leg transmits according to the order of BSN.Suppose transmit leg the send window buffer memory 13 data blocks.
With regard to transmit leg, sent these 11 data blocks of (3-a) in the window, (b-f) these 5 data blocks are not also sent.In addition, outer (0-2) these 3 data blocks of window are confirmed as correct reception in the side of being received; Though (3-a) these 8 data blocks send, also all do not receive the correct receiving status information that the recipient feeds back.Definition according to send window can be known; Because (0-2) these 3 data blocks have been confirmed to be correct reception; Thereby cause send window to upgrade; Be the oldest data block (the being data block 3) position that the original position of send window slides into wait acknowledge, thereby current send window comprise (3-f) these 13 data blocks.
With regard to the recipient, the data block before the data block 3 correctly receives; 3,4 and 7 these three data blocks correctly do not receive (confiscate or data are made mistakes); 5,6 and 8 these three data blocks correctly receive; (9-f) these 7 data blocks also do not receive.
Suppose that under transmission state shown in Figure 1 the BSN that BSN_NACK in the table 1 (or SSN) field is filled in is 3, represent that then BSN is that 3 data block does not correctly receive (as losing or error in data), and BSN be 3 data block be bitmap hold the border the most always; In addition, suppose that the bitmap shown in the table 1 comprises 8 altogether.Because transmit leg is according to the order transmission data block of BSN, promptly be 1 data block sequential delivery, and then the recipient receive at first in theory should be that BSN is 1 data block by BSN, be BSN is 2 data block then, later and the like.Therefore, know from ACK/NACK message that as the recipient border of holding the most always of bitmap is BSN when being 3, know that promptly it is the accepting state of 8 data blocks upgrading of 3 data block that the 8bits bitmap is used to indicate than BSN, promptly BSN is the accepting state of the data block of 4-b.
Can know that in conjunction with content shown in Figure 1 BSN is that two data block errors of 4,7 receive (representing with 0), and BSN to be three data blocks of 5,6,8 correctly receive (representing with 1), so preceding 5 status bit messages of bitmap are " 01101 " successively.But; This moment BSN be 9, two data blocks of a are also in the transmission way; BSN is that the data block of b is not also sent, so the recipient constantly can not receive this three data blocks at this, also just can't know these three data blocks real accepting state in the future: correctly receive or wrong reception.So; No matter the information of back three mode bits in this moment bitmap (be used to indicate that BSN is 9, the position of a and these three data block accepting states of b) is " 1 " of the correct reception of expression; Still wrong " 0 " that receives of expression all is inaccurate, even might be wrong.And then inaccurate message bit pattern just might cause the former data that should retransmit of transmit leg not retransmitted after being fed back to transmit leg and carrying out the foundation of data re-transmission as it, the data that originally needn't retransmit and the mistake retransmitted.
For example, suppose that the information of the 6th mode bit of bitmap is " 0 ", transmit leg will be 9 data block repeating transmission with BSN after receiving said message bit pattern so; But the recipient has correctly received BSN and is 9 data block after message bit pattern is fed back to transmit leg in fact.It is thus clear that the BSN that transmit leg needn't be retransmitted is that 9 data block is retransmitted, the waste resource.
Summary of the invention
The problem that the embodiment of the invention will solve provides a kind of feedback method and feedback device of data receiving state; Adopt this feedback method and device; Recipient's the inaccurate phenomenon of message bit pattern can not occur feeding back to, and then avoid transmit leg to carry out wrong data re-transmission on this basis.
For solving the problems of the technologies described above; The objective of the invention is to realize: a kind of feedback method of processing data accepting state through following technical scheme; The recipient carries feedback information in sending to the data block of transmit leg; The reception bitmap and this up-to-date end boundary information that receive bitmap of said feedback information for needing feedback, said reception bitmap comprises the accepting state position information of one or more continuous data block; Said up-to-date end boundary information is the piece sequence number of the corresponding data block in up-to-date end border; Wherein, the corresponding data block of status bit message in the said reception bitmap is confirmed with this status bit message present position in bitmap is unique by the data block that up-to-date end border is corresponding; The corresponding data block in said up-to-date end border is a up-to-date data block in one or more continuous data block of comprising of said reception bitmap.
A kind of data sink; Comprise and receive data block that transmit leg sends and in order to the memory cell of recording data blocks accepting state; Also comprise the feedback information coding unit; In order to the data block accepting state position information that provides according to memory cell, set up the feedback information that comprises the up-to-date end border that receives bitmap and this reception bitmap, said reception bitmap comprises the accepting state position information of one or more continuous data block; Wherein, the corresponding data block of status bit message in the said reception bitmap is confirmed with this status bit message present position in bitmap is unique by the data block that up-to-date end border is corresponding; Said up-to-date end boundary information is the piece sequence number of the corresponding data block in up-to-date end border; The corresponding data block in said up-to-date end border is a up-to-date data block in one or more continuous data block of comprising of said reception bitmap;
The feedback information transmitting element is in order to send the data block carry the feedback information that the feedback information coding unit provides to transmit leg.
A kind of data sending device; Comprise data block transmission processing unit; Also comprise the feedback information receiving element; In order to receive the feedback information that the recipient carries in data block, said feedback information comprises the reception bitmap of the data block of sending through the data block transmitting element and the up-to-date end boundary information of this reception bitmap; Wherein, the corresponding data block of status bit message in the said reception bitmap is confirmed with this status bit message present position in bitmap is unique by the data block that up-to-date end border is corresponding; Said reception bitmap comprises the accepting state position information of one or more continuous data block; Said up-to-date end boundary information is the piece sequence number of the corresponding data block in up-to-date end border; The corresponding data block in said up-to-date end border is a up-to-date data block in one or more continuous data block of comprising of said reception bitmap; The feedback information decoding unit is in order to resolve the data block accepting state in the feedback information that the feedback information receiving element provides; And data re-transmission processing unit; In order to the data block accepting state position information that provides according to said feedback information decoding unit; Send processing unit transmission data block to be retransmitted to data block, said data block is sent processing unit and is transmitted the data block that needs re-transmission to the recipient.
Above technical scheme can find out that in the feedback method of embodiment of the invention data receiving state, the recipient is through carrying the up-to-date end boundary information that receives bitmap and this reception bitmap in sending to the data block of transmit leg; Transmit leg parses the accepting state of the corresponding data piece of this feedback information, retransmits the data block of the erroneous transmissions of recipient's feedback in view of the above.Therefore, through technical scheme provided by the invention, the reception message bit pattern that feeds back to transmit leg is accurately, can not cause the transmit leg mistake to retransmit.
Description of drawings
Fig. 1 is the concrete transmission course sketch map of of sending direction recipient transmission data block;
Fig. 2 is the first execution mode schematic flow sheet of accepting state feedback method of the present invention;
Fig. 3 is the second execution mode schematic flow sheet of accepting state feedback method of the present invention;
Its example structure sketch map of Fig. 4 for data sink of the present invention and data sending device.
Embodiment
Be example with a kind of data enhancement mode mobile communication technology EDGE (Enhanced Data rates for GSM Evolution, Enhanced Data rates for GSM Evolution) below based on the GSM/GPRS network, the more detailed explanation embodiment of the invention.
In the EDGE technology, TBF (Temporary Block Flow, Temporary Block Flow) is interim connection between MS (Mobile Station, travelling carriage) and the network, only in the process of data forwarding, just exists.TBF is supported in the unidirectional forwarding of the upper strata PDU (Protocol Data Unit, protocol Data Unit) on the grouping physical channel.Network has been for each TBF has distributed TFI (Temporary Flow Identity, Temporary Block Flow indication), and when occurring a plurality of TBF at the same time, the TFI of each TBF is different.On the descending PDCH (Packet Data Channel, Packet Data Channel) that distributes, MS is through detecting the ownership of this TBF of TFI identification.
A upper strata PDU frame all is made up of a series of RLC (Radio Link Control, Radio Link control) piece, and each RLC data block has corresponding piece sequence number BSN, and transmits according to the order of BSN.In order to optimize the transfer of data under the packet switched mode; RLC data block is transmitted in RLC/MAC (Media Access Control; The medium access control) receives ARQ (Automatic Repeat reQuest under the affirmation mode; Automatic repetitive requests) mechanism control; Transmit leg (like the base station) lets recipient (like MS) report the information of the RLC data block that related downlink situation and success receive through poll, and the main mode of recipient's report is the bitmap that in feeding back to the information of transmit leg, carries designation data piece accepting state.In addition, recipient (like MS) also can carry out quick A ck/Nack active feedback based on the event-driven of BSN in order to reduce the transmission delay that the polling interval causes.For example, the BSN that detects data block as the recipient makes mistakes in proper order (being dropout of data block) or the data division of RLC data block is made mistakes, and then active feedback comprises the Ack/Nack report of bitmap, so that the transmit leg retransmission of lost or the data block of makeing mistakes in view of the above.
Transmitting terminal comes the addressing RLC data block through send window, and the size of RLC window is that the speed with GPRS transmission is complementary and fixing.In send window, RLC data block is expressed as not transmission, wait acknowledge respectively, is correctly received and wrong accepting state.If a RLC data block was not sent out, then be identified as not transmit status,, this data block is identified as the wait acknowledge state in case being sent out.Can know after the ACK/NACK message that receives downlink grouped whether the piece that sends the front correctly receives, and corresponding renewal send window.If data block is received by correct, then data block is identified as correct accepting state (ACK); If mistake receives or loses, then this piece is identified as wrong accepting state (NACK); If do not receive response message, then keep the wait acknowledge state.After the data block of first wait acknowledge of send window is confirmed to be correct reception; Then send window upgrades; Be that send window moves a data block backward, in other words, the original position of send window slides into the position of the data block of first dont answer.
After understanding above-mentioned basic technical features, further introduce each preferred embodiment of the present invention.Need the explanation, though following each preferred embodiment be with the transmission RLC data block be the explanation that example is carried out, do not limit to therewith, so long as the accepting state majority of feedback data piece can be suitable for technical scheme of the present invention.In addition, below each preferred embodiment all send RLC data block (downlink data) to travelling carriage with the base station, travelling carriage is that example describes to the accepting state of base station feedback downlink data; But otherwise still, promptly the accepting state that uses the same method to travelling carriage feeding back uplink data also can be adopted in the base station.
See also Fig. 2, it is for the first execution mode schematic flow sheet of processing data accepting state feedback method of the present invention.
Step 210: RLC data block is sent to travelling carriage in the base station.
Step 220: travelling carriage detects data block and receives mistake; If the data block that need send to the base station is arranged; Then in sending to the data block of base station, carry the reception bitmap that needs feedback and the up-to-date end boundary information of this receptions bitmap, said reception bitmap comprises the receiving status information of and a plurality of continuous data block.Said reception mistake generally includes two kinds: though RLC data block is lost and received the data block error in data.
The corresponding data block in up-to-date end border is a up-to-date data block in the corresponding data block of feedback information, and the receiving status information of up-to-date end border corresponding data piece can take a state information position that receives in the bitmap; Also can directly stipulate the accepting state on up-to-date end border, the accepting state on for example up-to-date end border is wrong accepting state.And then possibly have two kinds of situation: the data block that (1) bitmap is corresponding is than the older data block of the up-to-date end of bitmap border corresponding data piece, and in other words, the corresponding data block in the up-to-date end of bitmap border is the data block data updated piece corresponding than bitmap.(2) the corresponding data block of the up-to-date end of bitmap is a up-to-date data block in the bitmap corresponding data piece, and in other words, up-to-date data block is exactly the corresponding data block in bitmap border in the bitmap corresponding data piece.
The recipient can derive the corresponding data block BSN of any one status bit message in the bitmap according to the BSN on the up-to-date end border in the feedback information.In other words, receive the corresponding data block of status bit message in the bitmap, confirm with this status bit message present position in bitmap is unique by the data block that up-to-date end border is corresponding.For example, the length of supposing bitmap is L, and wherein each status bit message is bit_number in the bitmap present position, and the scope of bit_number is 1 to L.The front was carried; The recipient can know the homing sequence number (SSN) of bitmap according to the up-to-date end border of bitmap; So, BSN=(SSN-bit_number) the modulo SNS of the data block that certain status bit message is corresponding in the bitmap, wherein " modulo " is delivery; SNS is BSN value space, is that maximum BSN value adds 1.
Provide example below, be exemplified as the basis with concrete transmission shown in Figure 1 corresponding to above-mentioned two kinds of concrete conditions.The corresponding data block in up-to-date end border has accurate accepting state, for example, and the up-to-date end boundary B SN=7 in the feedback information, and bitmap lengths is 7 bits, then this bitmap can be indicated the accepting state of 7 RLC data blocks.And then; The information of each mode bit of bitmap is followed successively by " 1100111 "; The RLC data block of representing BSN=6 respectively correctly receives, and the RLC data block of BSN=5 correctly receives, the RLC data block mistake of BSN=4 receives, the RLC data block mistake of BSN=3 receives, the RLC data block of BSN=2 correctly receives, the RLC data block of BSN=1 correctly receives, the RLC data block of BSN=0 correctly receives.The front was carried, and send window only just can be upgraded in the base station after RLC data block is confirmed to be correct reception, and it is slided to first RLC data block to be confirmed, and therefore, the RLC data block before the send window all is to be moved the data block that platform correctly receives.Therefore, travelling carriage shows that at the bitmap middle finger the correct reception of BSN=2,1,0 three RLC data block is accurately.And then the bitmap after filling like this comprises eight RLC data block accepting state indication informations of BSN=0-7.
Again for example, up-to-date end boundary B SN=8, bitmap lengths is 8 bits, promptly this bitmap can be indicated the accepting state of 8 RLC data blocks.And then; 8 status bit messages of bitmap are followed successively by " 10110011 "; The RLC data block of representing BSN=8 respectively correctly receives, the RLC data block mistake of BSN=7 receives, the RLC data block of BSN=6 correctly receives, and the RLC data block of BSN=5 correctly receives, the RLC data block mistake of BSN=4 receives, the RLC data block mistake of BSN=3 receives, the RLC data block of BSN=2 correctly receives, the RLC data block of BSN=1 correctly receives.
Because the embodiment of the invention is carried the up-to-date end border that receives bitmap and bitmap through uplink data block, thereby need not use an independent ascending wireless resource just can feed back reception information, has saved unlimited resources.
Step 230: after the base station receives the feedback information that carries in the data block of travelling carriage transmission, the data block of the erroneous transmissions of repeat feedback information indication.Receive the corresponding data block of status bit message in the bitmap, confirm with this status bit message present position in bitmap is unique by the data block that up-to-date end border is corresponding.In other words, the BSN that the recipient can provide according to up-to-date end border confirms the BSN of the data block that the status bit message of certain position in the bitmap is corresponding.
See also Fig. 3, it is for the second execution mode schematic flow sheet of processing data accepting state feedback method of the present invention.
Step 310: RLC data block is sent to travelling carriage in the base station.
Step 320: travelling carriage receives the polling request that send the base station; If the data block that need send to the base station is arranged; Then in sending to the data block of base station, carry the reception bitmap that needs feedback and the up-to-date end boundary information of this receptions bitmap, said reception bitmap comprises the receiving status information of and a plurality of continuous data block.The corresponding data block in up-to-date end border is a up-to-date data block in the corresponding data block of feedback information, and the receiving status information of up-to-date end border corresponding data piece can take a state information position that receives in the bitmap; Also can directly stipulate the accepting state on up-to-date end border, the accepting state on for example up-to-date end border is wrong accepting state.
Provide example below, be exemplified as the basis with concrete transmission shown in Figure 1 corresponding to above-mentioned two kinds of concrete modes.
The corresponding data block in up-to-date end border has accurate accepting state, for example, and the up-to-date end boundary B SN=7 in the feedback information, and bitmap lengths is 7 bits, then this bitmap can be indicated the accepting state of 7 RLC data blocks.And then; The information of each mode bit of bitmap is followed successively by " 1100111 "; The RLC data block of expression BSN=6 correctly receives, and the RLC data block of BSN=5 correctly receives, the RLC data block mistake of BSN=4 receives, the RLC data block mistake of BSN=3 receives, the RLC data block of BSN=2 correctly receives, the RLC data block of BSN=1 correctly receives, the RLC data block of BSN=0 correctly receives.
Again for example, up-to-date end boundary B SN=8, bitmap lengths is 8 bits, promptly this bitmap can be indicated the accepting state of 8 RLC data blocks.And then; 8 status bit messages of bitmap are followed successively by " 10110011 "; The RLC data block of expression BSN=8 correctly receives, the RLC data block mistake of BSN=7 receives, the RLC data block of BSN=6 correctly receives, and the RLC data block of BSN=5 correctly receives, the RLC data block mistake of BSN=4 receives, the RLC data block mistake of BSN=3 receives, the RLC data block of BSN=2 correctly receives, the RLC data block of BSN=1 correctly receives.Generally speaking, the data block that bitmap is corresponding is than the older data block of bitmap border corresponding data piece, and in other words, the corresponding data block in bitmap border is than bitmap corresponding data piece data updated piece.Perhaps, the data block that bitmap is corresponding is a up-to-date data block in the bitmap corresponding data piece, and in other words, up-to-date data block is exactly the corresponding data block in bitmap border in the bitmap corresponding data piece.Preferably, the corresponding data block in up-to-date end border is a up-to-date data block in the feedback information corresponding data piece.
The front was carried, and send window only just can be upgraded in the base station after RLC data block is confirmed to be correct reception, and it is slided to first RLC data block to be confirmed, and therefore, the RLC data block before the send window all is to be moved the data block that platform correctly receives.Therefore, travelling carriage shows that at the bitmap middle finger the correct reception of BSN=2,1,0 three RLC data block is accurately.And then the bitmap after filling like this comprises eight RLC data block accepting state indication informations of BSN=0-7.Said reception mistake generally includes two kinds: though RLC data block is lost and received the data block error in data.
Step 330: after the base station receives the feedback information that carries in the data block of travelling carriage transmission, the data block of the erroneous transmissions of repeat feedback information indication.Receive the corresponding data block of status bit message in the bitmap, confirm with this status bit message present position in bitmap is unique by the data block that up-to-date end border is corresponding.In other words, the BSN that the recipient can provide according to up-to-date end border confirms the BSN of the data block that the status bit message of certain position in the bitmap is corresponding.
Can find out through above-mentioned two embodiment; The recipient feeds back to that receiving status information all is accurately shown in the bitmap of transmit leg; And then, parse the accepting state of corresponding data piece of this feedback information at transmit leg after, can carry out proper data piece retransmission operation in view of the above.
Need explanation; Though in above-mentioned two preferred embodiments; Trigger event to recipient's feedback data piece accepting state is: the recipient detects data block and receives the wrong polling request that perhaps receives transmit leg, but it will be appreciated by those skilled in the art that other trigger events that the feedback receiving status information can also be set according to actual conditions; Certain hour feedback at interval for example, or the data block of not feeding back accepting state reaches some feedbacks or the like.
The invention also discloses a kind of data sink, see also Fig. 4, it is the structural representation of data sink of the present invention and data sending device embodiment.Need explanation; Because the described accepting state feedback method of receiving system, dispensing device and preamble in the present embodiment belongs to same inventive concept; Have more same concept, principle; Therefore the identical or corresponding techniques characteristic that had detailed for preamble repeats no more or briefly touches upon for example up-to-date end border and bitmap etc.
Below in conjunction with the example structure sketch map of this data sink and data sending device, with and operation principle, further introduce their internal structure.Need explanation; Because the data sink of the embodiment of the invention and data sending device are the improvement of on existing corresponding intrument basis, carrying out; Therefore; Only the logical block relevant with improvement part need be shown, those skilled in the art can combine to realize data receiving state feedback device shown in the present on the relevant prior art basis.In addition, data sink shown in the embodiment of the invention and data sending device all can be arranged in the network element (like the base station) of network side, also can be arranged in the subscriber equipment.Present embodiment only is arranged in travelling carriage with data sink, and data sending device is arranged in the base station and describes for example.Shown in data sending device comprise that it comprises that data block sends processing unit 43, feedback information receiving element 44, feedback information decoding unit 42 and data re-transmission processing unit 41.Data sink comprises memory cell 51, feedback information coding unit 54 and feedback information transmitting element 53.In the present embodiment, said data sending device is in the base station, and data sink is in travelling carriage.One skilled in the art would recognize that vice versa, and because the entity in the wireless communication field generally is that receive to send out be again transmit leg, therefore if needed, an entity can comprise above-mentioned two devices simultaneously.Below in conjunction with the operation principle of above-mentioned two devices, further specify their internal structure.
At first; The base station is sent downlink data through data block processing unit 43 to travelling carriage; After this; If travelling carriage is received from the accepting state feedback request (like polling request) of base station or is detected the data block error of reception, then carry out the feedback processing of data receiving state through memory cell 51, feedback information coding unit and feedback information transmitting element, specific as follows:
Each the data block accepting state that is at first provided by feedback information coding unit 54 reference memory units 51 is set up the feedback information that comprises reception bitmap and the up-to-date end of this reception bitmap border.Said reception bitmap comprises the receiving status information of one or more continuous data block.The corresponding data block in up-to-date end border is a up-to-date data block in the corresponding data block of feedback information, and the receiving status information of up-to-date end border corresponding data piece can take a state information position that receives in the bitmap; Also can directly stipulate the accepting state on up-to-date end border, the accepting state on for example up-to-date end border is wrong accepting state.And then possibly have two kinds of situation: the data block that (1) bitmap is corresponding is than the older data block of the up-to-date end of bitmap border corresponding data piece, and in other words, the corresponding data block in the up-to-date end of bitmap border is the data block data updated piece corresponding than bitmap.(2) the corresponding data block of the up-to-date end of bitmap is a up-to-date data block in the bitmap corresponding data piece, and in other words, up-to-date data block is exactly the corresponding data block in bitmap border in the bitmap corresponding data piece.
After feedback information coding unit 54 is accomplished the task of feedback information structure, just give feedback information transmitting element 53 with this transmission of feedback information.After this, in case feedback information transmitting element 53 finds that the upstream data that need send to the base station is arranged, will in said upstream data, carry this feedback information so, and then send to the base station.After this, the feedback information that in data block, carries through feedback information receiving element 44 receiving mobiles of base station.And then, resolve feedback data piece accepting state in the feedback information that feedback information receiving elements 44 provide through feedback information decoding unit 42.At last; The data block receiving status information that the data re-transmission processing unit 41 of base station provides according to feedback information decoding unit 42; Send processing unit 43 transmission data block to be retransmitted to data block, last, data block is sent processing unit and is retransmitted data block above-mentioned to be retransmitted to travelling carriage in view of the above.
Operation principle through above-mentioned data sending device and data sink can be found out; Data sink feeds back to that receiving status information all is accurately shown in the bitmap of data sending device; And then; Parse the accepting state of corresponding data piece of this feedback information at data sink after, can carry out proper data piece retransmission operation in view of the above.
More than feedback method, data sink and the data sending device of a kind of processing data accepting state provided by the present invention carried out detailed introduction; Used concrete example among this paper principle of the present invention and execution mode are set forth, the explanation of above embodiment just is used for helping to understand method of the present invention and core concept thereof; Simultaneously, for one of ordinary skill in the art, according to thought of the present invention, the part that on embodiment and range of application, all can change, in sum, this description should not be construed as limitation of the present invention.
Claims (9)
1. the feedback method of a processing data accepting state is characterized in that,
The recipient carries feedback information in sending to the data block of transmit leg; The reception bitmap and this up-to-date end boundary information that receive bitmap of said feedback information for needing feedback, said reception bitmap comprises the accepting state position information of one or more continuous data block; Said up-to-date end boundary information is the piece sequence number of the corresponding data block in up-to-date end border;
Wherein, the corresponding data block of status bit message in the said reception bitmap is confirmed with this status bit message present position in bitmap is unique by the data block that up-to-date end border is corresponding; The corresponding data block in said up-to-date end border is a up-to-date data block in one or more continuous data block of comprising of said reception bitmap.
2. feedback method as claimed in claim 1 is characterized in that, said method also comprises:
After transmit leg receives the feedback information that carries in the data block of recipient's transmission, the data block of the erroneous transmissions of repeat feedback information indication.
3. feedback method as claimed in claim 1 is characterized in that, the accepting state of the data block that said up-to-date end border is corresponding is wrong accepting state.
4. like any described feedback method in the claim 1 to 3, it is characterized in that if trigger event occurs, then the recipient carries the up-to-date end boundary information of said reception bitmap and this reception bitmap in needs send to the data block of transmit leg.
5. feedback method as claimed in claim 4 is characterized in that, receives if the recipient detects data block error, then in the data block that needs send, carries the up-to-date end boundary information of said reception bitmap and this reception bitmap.
6. like any described feedback method in the claim 1 to 3, it is characterized in that the corresponding data block in said up-to-date end border has accurate accepting state.
7. data sink comprises receiving data block that transmit leg sends and in order to the memory cell of recording data blocks accepting state, it is characterized in that also comprising:
The feedback information coding unit; In order to the data block accepting state position information that provides according to memory cell; Establishment comprises the feedback information on the up-to-date end border that receives bitmap and this reception bitmap, and said reception bitmap comprises the accepting state position information of one or more continuous data block; Wherein, the corresponding data block of status bit message in the said reception bitmap is confirmed with this status bit message present position in bitmap is unique by the data block that up-to-date end border is corresponding; Said up-to-date end boundary information is the piece sequence number of the corresponding data block in up-to-date end border; The corresponding data block in said up-to-date end border is a up-to-date data block in one or more continuous data block of comprising of said reception bitmap;
The feedback information transmitting element is in order to send the data block carry the feedback information that the feedback information coding unit provides to transmit leg.
8. a kind of data sink as claimed in claim 7; It is characterized in that: the data block error that detects reception when said device; Then the feedback information coding unit makes up feedback information, triggers the feedback information transmitting element and sends the data block of carrying this feedback information to transmit leg.
9. a data sending device comprises data block transmission processing unit, it is characterized in that also comprising:
The feedback information receiving element, in order to receive the feedback information that the recipient carries in data block, said feedback information comprises the reception bitmap of the data block of sending through the data block transmitting element and the up-to-date end boundary information of this reception bitmap; Wherein, the corresponding data block of status bit message in the said reception bitmap is confirmed with this status bit message present position in bitmap is unique by the data block that up-to-date end border is corresponding; Said reception bitmap comprises the accepting state position information of one or more continuous data block; Said up-to-date end boundary information is the piece sequence number of the corresponding data block in up-to-date end border; The corresponding data block in said up-to-date end border is a up-to-date data block in one or more continuous data block of comprising of said reception bitmap;
The feedback information decoding unit is in order to resolve the data block accepting state in the feedback information that the feedback information receiving element provides;
And data re-transmission processing unit; In order to the data block accepting state position information that provides according to said feedback information decoding unit; Send processing unit transmission data block to be retransmitted to data block, said data block is sent processing unit and is transmitted the data block that needs re-transmission to the recipient.
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| KR20100021957A (en) * | 2008-08-18 | 2010-02-26 | 삼성전자주식회사 | Apparatus and method for arq feedback message generating in wireless communication system |
| CN102447548B (en) * | 2010-10-09 | 2015-03-18 | 上海中兴软件有限责任公司 | Radio block transmission method and system |
| CN103141132A (en) * | 2011-09-30 | 2013-06-05 | 华为技术有限公司 | Downlink measurement report obtaining method, device and system |
| WO2015153977A2 (en) * | 2014-04-04 | 2015-10-08 | Vid Scale, Inc. | Network-based early packet loss detection |
| US9819467B2 (en) * | 2014-08-08 | 2017-11-14 | Qualcomm Incorporated | Communicating feedback in listen-before-talk (LBT) wireless networks |
| CN105306305B (en) * | 2015-11-12 | 2019-04-05 | 中国电子科技集团公司第三十研究所 | A kind of mobile wireless network traffic data collection method and device |
| EP3609103B1 (en) * | 2017-05-03 | 2021-10-06 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Data re-transmission control method and related product |
| CN109756311A (en) * | 2017-11-02 | 2019-05-14 | 普天信息技术有限公司 | A kind of method and device of determining synchronization signal status information |
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| CN1494781A (en) * | 2002-01-07 | 2004-05-05 | Ħ��������˾ | Method and apparatus for frame determination in ARQ systems |
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