CN101119184A - Mixing self-adaption retransmission request method and entity - Google Patents
Mixing self-adaption retransmission request method and entity Download PDFInfo
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Abstract
The present invention relates to the mobile communication field and discloses a HARQ method and entity, which makes the HARQ adapting flexibly to different delaying requirements of different data. In the present invention, the HARQ is more flexible by using different retransmission alternations to different data and the retransmission alternations can be confirmed according to business types of the data. When a resource block conflict occurs, a resource block of HARQ process using conflict is chosen according to the priority, fairness or the combination of the priority and fairness. And to conduct resource scheduling to the HARQ process that is not chosen, if the resource scheduling is unsuccessful then the transmission is tried after the next retransmission alternation. If a plurality of ACK/NACK signals needs to be transmitted in a same physical frame, the ACK/NACK signal that right angle resource bears different HARQ process is adopted according the number of every HARQ process.
Description
Technology neck city
The present invention relates to moving communicating field, particularly mixed self-adapting repeat requests (HybridAutomatic Repeat Request is called for short " HARQ ") technology.
Background technology
Mobile communication is the focus of nearly a period of time development communication technologies, and its swift and violent impetus especially is embodied on the Wideband Code Division Multiple Access (WCDMA) (Wideband Code DivisionMultiple Access is called for short " WCDMA ") of one of 3G (Third Generation) Moblie global standards.One of key property of WCDMA technology R5 version is exactly that high speed downlink packet inserts (High Speed Downlink Packet Access, be called for short " HSDPA "), promptly by adaptive modulation and coding (Adaptive Modulation and Coding, abbreviation " AMC "), mixed self-adapting repeat requests (Hybrid Automatic Repeat Request, be called for short " HARQ "), and the series of key techniques such as fast dispatch of base-station node (Node B), realized descending high speed data transfer.
Wherein, the HARQ technology is the further evolution of automatic repeat requests (Automatic Repeat Request is called for short " ARQ ") technology.Because data communication grows up at first, require bigger bandwidth and higher transmission quality usually on wired network.For wired connection, reliability of data transmission realizes by retransmitting.Therefore, current when once attempting bust this, just require retransmitted data packet, such transmission mechanism just is referred to as ARQ.Under the wireless transmission environment, interchannel noise and because the interference that the decline that brings of mobility and other users bring makes channel transmission quality very poor is suppressed various interference so should protect the data grouping.This protection mainly is to adopt forward direction check code (Forward Error Correction is called for short " FEC "), the extra bit of transmission in grouping.Yet too much forward error correction coding can make the efficiency of transmission step-down.Therefore, a kind of scheme HARQ that is combined by ARQ and FEC has been proposed.
HARQ specification requirement transmitting terminal sent data to receiving terminal after, need obtain the reply data of receiving terminal feedback acknowledgment ACK (affirmation)/NACK (do not have and confirm) and judge whether this receiving terminal has correctly received data, so that decision is data retransmission or New Development data.Whether fixing according to the HARQ retransmit interval, HARQ can be divided into synchronous HARQ and asynchronous HARQ.It is constant that the synchronous HARQ mode refers to that the frame retransmit interval of each HARQ process remains, and asynchronous HARQ mode refers to that the frame retransmit interval in the system changes with different situations.By contrast, asynchronous HARQ mode is more flexible, and the synchronous HARQ mode can the saving system in the expense of control information.Use the synchronous HARQ mode in present most of communication system.The HARQ mode of being mentioned among the present invention all is based on the synchronous HARQ mode.
Synchronous HARQ retransmits structure as shown in Figure 1, and the start frame of tentation data transmission is k, and ACK interframe is divided into N between the ACK feedback by beginning to be transferred to
F, be N from the retransmit interval that begins to be transferred between retransmitting next time.So, transmitting terminal transmits data at k frame, and receiving terminal receives after the data at k+1 to k+N
FCarry out the demodulation sign indicating number in-1 frame, at k+N
FWhether correctly individual frame receiving terminal feeding back ACK or NACK bring in the transmission of expression k frame to transmission, then at k+N
FReceiving terminal carries out ACK decoding and digital coding in+1 to k+N-1 frame.If at k+N
FThat individual frame receiving terminal feeds back is ACK, then will send new data at k+N frame transmitting terminal; If at k+N
FThat individual frame receiving terminal feeds back is NACK, then will retransmit these data at k+N frame transmitting terminal.Fig. 1 is the re-transmission structure of N frame, and promptly every N frame carries out a HARQ and retransmit.In Fig. 1, k frame, k+N frame and k+2N etc. belong to same interval, be that they have the identical distance sequence number, what transmitted is the data in the same HARQ process, and k+1 frame, k+N+1 frame and k+2N+1 frame etc. are transmitted as the data in another HARQ process.
The HARQ structure that forward channel 6 frames retransmit as shown in Figure 2.Send configuration information and transmit data at the 0th frame transmitting terminal, receiving terminal carries out the demodulation sign indicating number after receiving data in the 1st, 2 frame, bring in the transmission of expression the 0th frame at the 3rd frame receiving terminal feeding back ACK or NACK to transmission whether correctly, transmitting terminal carries out ACK decoding and digital coding in the 4th, 5 frame then.If the 3rd frame receiving terminal feedback be ACK, then will send new data at the 6th frame transmitting terminal; If the 3rd frame receiving terminal feedback be NACK, then will retransmit the data of being transmitted in the 0th frame at the 6th frame transmitting terminal.Fig. 2 is the re-transmission structure of 6 frames, and promptly per 6 frames carry out a HARQ and retransmit or transmission.In Fig. 2, the 0th frame, the 6th frame and the 12nd frame ... belong to same interval, be that they have identical distance sequence number 0, the data of being transmitted are the data in the same HARQ process, as the data in the HARQ process 0, in like manner can push away the 1st frame, the 7th frame and the 13rd frame ... all belong at interval 1, the data of being transmitted are for the data in another HARQ process, as data in the HARQ process 1 or the like.In addition, also there are 5 frames to retransmit the HARQ etc. that structure or 8 frames retransmit structure.
Present AIE (Air Interface Evolution, abbreviation " AIE ") the channel R-ACKCH that is used for transferring ACK/NACK in is defined as follows: each R-ACKCH is corresponding with the base node (fundamental node) on the forward channel number, represents with a R-ACKCH sign.The ACK/NACK of R-ACKCH frequency modulation at random in each physical frame minimumly takies 4 part resources (under system bandwidth is situation more than the 5MHz) in the base node in each physical frame, as shown in Figure 3.As shown in Figure 4, half of each base node is used to carry the ACK/NACK of R-ACKCH, second half be used for bearer service.Half the base node that is used for loading ACK/NACK is called a tile, takies 8 subcarriers of 8 symbols.Each tile is divided into 4 subtile, 8 ACK/NACK of each subtile carrying, and a tile can carry 32 ACK/NACK altogether, and is corresponding with 32 base node.F-ACKCH (ACK transmission channel forward) also is the different corresponding different base node of ACK/NAK signal, adopts the mode of frequency diversity and other down control channels multiplexing.Half the base node that is used for bearer service is divided into a plurality of fritters, is called Resource Block, and the business in each HARQ process will take one or more Resource Block.
In actual applications, there is following problem: the delay requirement that can't adapt to different business.
Cause the main cause of this situation to be, at present, retransmit interval N is a fixed value in the synchronous HARQ, is the structure that 6 frames retransmit structure or the re-transmission of 8 frames.And business is varied now, there is data packet length to lack but more sensitive business of real-time such as speech business, there is data packet length long but to not very sensitive business of real-time such as data business etc., it is less to the retransmit interval in the high service needed HARQ structure of delay requirement to be similar to speech business etc., be similar to data service etc. and (particularly use multiple-input and multiple-output (Multiple Input Multiple Output the retransmit interval in the not high service needed HARQ structure of delay requirement is long, abbreviation " MIMO ") business of technology, it is chronic that decoding needs, and therefore needs the HARQ structure of big retransmit interval).And can only adopt a fixedly HARQ structure of retransmit interval in the prior art, and promptly all be that 6 frames retransmit or all be that 8 frames retransmit, therefore just be difficult to satisfy the demand of variety classes business.
Summary of the invention
In view of this, main purpose of the present invention is to provide a kind of mixed self-adapting retransmission request method and entity thereof, makes HARQ can adapt to the different delay demand of different pieces of information neatly.
For achieving the above object, the invention provides a kind of mixed self-adapting retransmission request method, comprise following steps:
Determine the retransmit interval of data to be transferred, this data to be transferred is carried out mixed self-adapting repeat requests HARQ transmission and retransmit, up to being correctly decoded or reaching maximum retransmission with this retransmit interval.
Wherein, determine the retransmit interval of this data to be transferred according to the type of service of described data to be transferred.
In this external described method, if at least two HARQ processes clash at the same Resource Block of same physical frame, then select one of them HARQ process to use this Resource Block, other HARQ process is used other Resource Block of same physical frame by scheduling of resource, if the scheduling of resource failure, then other HARQ process sends data in its next retransmit interval.
In this external described method,, select one of them HARQ process to use the Resource Block of conflict according to priority, fairness or the priority of data and the combination of fairness in each HARQ process.
In this external described method, when selecting, preferentially select the HARQ process of retransmit interval minimum according to priority;
When selecting according to fairness, the preferential maximum HARQ process of wait number of times of selecting;
During according to the combination selection of priority and fairness, preferentially select retransmit interval less and wait for the more HARQ process of number of times.
In this external described method,,, use the ack/nack signal of the different HARQ processes of resource bearing of quadrature then according to the numbering of each HARQ process if at least two HARQ processes are not confirmed the NACK signal at same physical frame acknowledge ACK/.
In this external described method, use one of in the following manner the ack/nack signal of the different HARQ processes of resource bearing of quadrature:
The ack signal of different HARQ process numberings takies different frequency resources; Or,
The ack signal of different HARQ process numberings takies different time resources; Or,
The ack signal of different HARQ process numberings uses different orthogonal codes.
The retransmit interval of the HARQ process that each is parallel meets the following conditions:
To the retransmit interval of any two HARQ processes, one of them must be divided exactly by another;
With minimum retransmission interval N
1Be the cycle, at every N
1In the individual continuous physical frame, the retransmit interval of the HARQ process of each physical frame is fixed, and uses the HARQ of various retransmit intervals to cross the number of passes sum and is less than or equal to N
1
For with greater than N
1N
iBe the physical frame of retransmit interval, every N
i/ N
1The individual continuous N that is spaced apart
1Physical frame by N
i/ N
1Individual different HARQ process is used.
Each parallel HARQ process can be used two retransmit intervals, and for example 5 and 10, perhaps 6 and 12.
In this external described method, retransmit interval is N
iThe T of ack/nack signal after data send of HARQ process
iThe frame transmission, retransmit interval is greater than N
iN
I+1The T of ack/nack signal after data send of HARQ process
I+1The frame transmission, T
I+1With T
iSatisfy following relation: T
I+1=T
i+ N
iK, wherein, k is a nonnegative integer.
In this external described method, when data sending terminal is portable terminal, k=0 or 1;
When data sending terminal is the base station, k=1.
In this external described method, notify the retransmit interval type of described HARQ process by the forward control channel in the AIE.
In this external described method, select the retransmit interval type of described HARQ process according to top signaling.
In addition, described method is applied to the transfer of data of upstream or downstream signal.
The present invention also provides a kind of mixed self-adapting repeat requests entity, comprises:
Determining unit at interval is used for determining the retransmit interval of data to be transferred;
Delivery unit is used for described data to be transferred is carried out HARQ transmission and retransmitting with the determined retransmit interval of described interval determining unit, up to being correctly decoded or reaching maximum retransmission.
Wherein, described interval determining unit is determined the retransmit interval of this data to be transferred according to the type of service of described data to be transferred.
In addition, also comprise:
The conflict identifying unit is used to judge whether that at least two HARQ processes clash at the same Resource Block of same physical frame;
Selected cell is used for according to priority, fairness or the priority of data and the combination of fairness in each HARQ process, selecting one of them HARQ process to use the Resource Block of conflict when described conflict identifying unit is judged the existence conflict;
The scheduling of resource unit, be used for when described conflict identifying unit is judged the existence conflict, use to the HARQ process of not chosen by described selected cell other resource block scheduling of same physical frame, indication is sent data by the HARQ process that described selected cell is chosen in its next retransmit interval if scheduling of resource is failed.
In addition, also comprise feedback module, be used to judge whether at least two HARQ processes,, use the ack/nack signal of the different HARQ processes of resource bearing of quadrature if then according to the numbering of each HARQ process at same physical frame transferring ACK/NACK signal.
In addition, also comprise the ack/nack signal transport module, being used in retransmit interval is N
iThe data of the HARQ process T after sending
iFrame transferring ACK/NACK signal is greater than N in retransmit interval
iN
I+1The data of the HARQ process T after sending
I+1Frame transferring ACK/NACK signal, T
I+1With T
iSatisfy following relation: T
I+1=T
i+ N
iK, wherein, k is a nonnegative integer.
When data sending terminal is portable terminal, k=0 or 1;
When data sending terminal is the base station, k=1.
In addition, also comprise notification module, be used for notifying the retransmit interval type of described HARQ process by the forward control channel of AIE.
Described mixed self-adapting repeat requests entity is selected the retransmit interval type of described HARQ process according to top signaling.
By relatively finding, the main distinction of technical scheme of the present invention and prior art is, different data are used different retransmit intervals, make HARQ become more flexible, can in parallel HARQ process, satisfy the different delay demand of different pieces of information.
Determine its retransmit interval according to the type of service of data, can adapt to the demand of different business.
When the Resource Block conflict takes place,, select one of them HARQ process to use the Resource Block of conflict according to the combination of priority, fairness or priority and fairness.Thereby guaranteed that most important data can be had user satisfaction preferably on the whole by prioritised transmission.
Can make full use of all Resource Block in the same physical frame by scheduling of resource, make each the HARQ process that clashes in a physical frame, to have passed data as far as possible.
The retransmit interval of parallel HARQ process is set to the multiple relation, makes the position that may clash become very regular, thereby effectively avoids different HARQ processes to use the conflict of same physical frame.
With minimum retransmission interval N
1Be the cycle, use the HARQ of various retransmit intervals to cross the number of passes sum and equal N
1Make that the Resource Block of each physical frame is all utilized fully, the Resource Block vacated because of retransmit interval can not occur, and, cross the number of passes sum at the HARQ that satisfies various retransmit intervals and equal N
1Condition under, use minimum retransmission HARQ at interval to cross number of passes or use the HARQ of other retransmit intervals to cross number of passes by increase/minimizing, can adapt to the demand of different business.
If a plurality of ack/nack signals need transmit,, use the ack/nack signal of the different HARQ processes of resource bearing of quadrature then according to the numbering of each HARQ process in same physical frame.Thereby guarantee that ack/nack signal can in time be transferred to the opposite end, guarantee the normal operation of HARQ process.
Retransmit interval is N
iThe T of ack/nack signal after data send of HARQ process
iFrame transmission, retransmit interval is for only greater than N
iN
I+1The T of ack/nack signal after data send of HARQ process
I+1The frame transmission, T
I+1With T
iSatisfy relational expression: T
I+1=T
i+ N
iK, wherein, k is a nonnegative integer.Can avoid the problem of ACK conflict fully so that the ack/nack signal of different HARQ processes transmits in different physical frames.
The retransmit interval type of HARQ process is selected according to top signaling in the base station, and gives terminal by the forward control channel among the AIE with the retransmit interval type notification of HARQ process, has solved the retransmit interval assignment problem of Physical Resource Block.
Description of drawings
Fig. 1 is the re-transmission structural representation according to HARQ in the prior art;
Fig. 2 is the 6 frames re-transmission structural representation according to HARQ in the prior art;
Fig. 3 is according to the multiplexing schematic diagram between the R-ACKCH in the prior art;
Fig. 4 is the resource occupation schematic diagram according to ack/nack signal in the prior art and business datum;
Fig. 5 is the HARQ method flow diagram according to first embodiment of the invention;
Fig. 6 is the transmission schematic diagram according to the HARQ of first embodiment of the invention;
Fig. 7 is according to the method flow diagram that solves the Resource Block conflict in the HARQ method of second embodiment of the invention;
Fig. 8 is the schematic diagram according to Resource Block conflict in the HARQ method of second embodiment of the invention;
Fig. 9 is according to the method schematic diagram that solves the Resource Block conflict in the HARQ method of second embodiment of the invention;
Figure 10 is according to the method flow diagram that solves the ack/nack signal conflict in the HARQ method of fifth embodiment of the invention;
Figure 11 is the schematic diagram according to the ack/nack signal of numbering with the different HARQ processes of orthogonal code quadrature in the HARQ method of fifth embodiment of the invention;
Figure 12 is according to the schematic diagram that in the HARQ method of fifth embodiment of the invention the ack/nack signal behind the quadrature is repeated to take a plurality of base node;
Figure 13 is the schematic diagram that takies different base node according to the ack/nack signal of different HARQ processes in the HARQ method of sixth embodiment of the invention;
Figure 14 is the schematic diagram that takies identical one or more base node according to the ack/nack signal of different HARQ processes in the HARQ method of sixth embodiment of the invention;
Figure 15 is the schematic diagram that takies the different time resource according to the ack/nack signal of different HARQ processes in the HARQ method of seventh embodiment of the invention;
Figure 16 is according to different multiples retransmit interval schematic diagram in the HARQ method of eighth embodiment of the invention;
Figure 17 is to be the structural representation of 5 frames and 10 frames according to retransmit interval in the HARQ method of ninth embodiment of the invention;
Figure 18 is to be the structural representation of 5 frames and 10 frames according to retransmit interval in the HARQ method of tenth embodiment of the invention;
Figure 19 is to be the structural representation of 6 frames and 12 frames according to retransmit interval in the HARQ method of eleventh embodiment of the invention;
Figure 20 is to be the structural representation of 6 frames and 12 frames according to retransmit interval in the HARQ method of twelveth embodiment of the invention.
Figure 21 is to be the ack/nack signal feedback schematic diagram of 5 frames and 10 frames according to retransmit interval in the HARQ method of fourteenth embodiment of the invention.
Embodiment
For making the purpose, technical solutions and advantages of the present invention clearer, the present invention is described in further detail below in conjunction with accompanying drawing.
Core of the present invention is, determines the retransmit interval of this data to be transferred according to the type of service of data to be transferred, this data to be transferred is carried out the HARQ transmission and retransmits with this retransmit interval, up to being correctly decoded or reaching maximum retransmission.If have at least two HARQ processes to clash,, select one of them HARQ process to use the Resource Block of conflict then according to priority, fairness or the priority of data and the combination of fairness in each HARQ process at the same Resource Block of same physical frame.Other HARQ process is used other Resource Block of same physical frame by scheduling of resource, if the scheduling of resource failure, then other HARQ process sends data in its next retransmit interval.If have two HARQ processes at least,, use the ack/nack signal of the different HARQ processes of resource bearing of quadrature then according to the numbering of each HARQ process at same physical frame transferring ACK/NACK signal.Both go for up channel in technical scheme of the present invention, also gone for down channel.
More than core of the present invention has been done simple declaration, below according to this principle, the first execution mode HARQ method of the present invention is described in detail.
As shown in Figure 5, in step 501, the HARQ entity of transmitting terminal obtains data to be transferred.Here alleged data to be transferred is unit with the piece, and a piece can once transmit for a HARQ process.Such as two processes are arranged in the HARQ entity: HARQ process 0 and HARQ process 1 have got access to data to be transferred respectively.
Then, enter step 502, transmitting terminal is determined the retransmit interval of this data to be transferred according to the type of service of data to be transferred.Specifically, because dissimilar business datums may be different to the requirement of time delay, such as speech business having relatively high expectations to time delay, data service is then relatively lower to the requirement of time delay, therefore, in order to adapt to the different delay demand of different pieces of information neatly, need determine the retransmit interval of corresponding data to be transferred at different types of service.At above-mentioned case, the type of service of supposing the data to be transferred that HARQ process 0 gets access to is speech business, the type of service of the data to be transferred that HARQ process 1 gets access to is data service, so, according to the requirement of business datum to time delay, the retransmit interval of determining for HARQ process 0 is 6 frames, and the retransmit interval of determining for HARQ process 1 is 8 frames.That is to say,,, then retransmit this data after the 0th frame sends,, then send new data to be transferred at the 6th frame if correctly received at the 6th frame if the data to be transferred on this process fails correctly to be received for HARQ process 0; For HARQ process 1, if the data to be transferred on this process fails correctly to be received, then retransmit this data at the 9th frame after the 1st frame sends, if correctly received, then send new data to be transferred, as shown in Figure 6 at the 9th frame.
Then, in step 503, each HARQ process of transmitting terminal sends this data to be transferred at own available physical frame.Which physical frame is each HARQ process can calculate by retransmit interval separately is own available.For example retransmit interval is 6, and the last time is to send data and received ack signal at the 6th frame, then this time will send new data to be transferred at the 12nd frame.
Then, enter step 504, transmitting terminal judges whether to receive the feedback signal of ACK.Such as, if being received to rectify really, the data that HARQ process 0 sends at the 0th frame receive, then transmitting terminal will be received the ACK feedback signal that these data of expression are correctly received, otherwise, with the NACK feedback signal of receiving that these data of expression are not correctly received.If what the transmitting terminal judgement received is the ACK feedback signal, then get back to step 501, continue to obtain new data to be transferred, otherwise, enter step 505.
In step 505, transmitting terminal continues to judge whether these data reach maximum retransmission, if, then get back to step 501, continue to obtain new data to be transferred, otherwise, enter step 506.
In step 506, transmitting terminal retransmits this data to be transferred when reaching retransmit interval.At above-mentioned case, receive if the data that HARQ process 0 sends at the 0th frame are received to rectify really, and these data do not reach maximum retransmission, then retransmit this data at the 6th frame.Similarly, receive, and these data do not reach maximum retransmission, then retransmit this data at the 9th frame if the data that HARQ process 1 sends at the 1st frame are received to rectify really.
In the second execution mode HARQ method of the present invention, the data to be transferred on each HARQ process transmits with the method in first execution mode and retransmits.If have at least two HARQ processes to clash, then by flow processing shown in Figure 7 at the same Resource Block of same physical frame.
In step 701, transmitting terminal selects a HARQ process to use the Resource Block of conflict, and other HARQ process is carried out scheduling of resource.Specifically, as shown in Figure 8, if HARQ process 0 sends data to be transferred at the 0th frame, and the retransmit interval of this data to be transferred is 8 frames; HARQ process 1 sends data to be transferred at the 2nd frame, and the retransmit interval of this data to be transferred is 6 frames, so, when the data to be transferred of HARQ process 0 and HARQ process 1 is not all correctly received, need to retransmit at the 8th frame the data to be transferred of HARQ process 0 and HARQ process 1, at this moment, the data to be transferred on two processes may need to use the same Resource Block of this physical frame, that is to say, clash at the same Resource Block of same physical frame.
In order to solve this collision problem, transmitting terminal can select one of them HARQ process to use the Resource Block of conflict according to the priority of data in each HARQ process, promptly selects the HARQ process of retransmit interval minimum.At above-mentioned case, transmitting terminal selects HARQ process 1 to use the Resource Block of this conflict.This is because the retransmit interval of HARQ process is more little, illustrates that the data of this HARQ process transmission are high more to delay requirement, therefore, is producing under the situation of conflicting the data that prioritised transmission is high to delay requirement.
For not selected HARQ process, carry out scheduling of resource, make each the HARQ process that clashes in a physical frame, pass data as far as possible.Such as HARQ process 0 clashes at the same Resource Block of same physical frame with HARQ process 1, has finally selected HARQ process 1 to use this conflicted resource piece, and so, HARQ process 0 is used other Resource Block of same physical frame by scheduling of resource.
Then, enter step 702, transmitting terminal judges whether scheduling of resource is successful, if success, then enter step 703, the data of each HARQ process of transmission in this physical frame are at above-mentioned case, if HARQ process 0 can be used other Resource Block of same physical frame, the then data of transmitting HARQ process 1 and HARQ process 0 in this physical frame by scheduling of resource; If scheduling of resource is unsuccessful, then enter step 704.
In step 704, transmitting terminal transmits the data of the HARQ process of selecting use conflicted resource piece in this physical frame, the data of other HARQ processes are waited for the retransmit interval of the next one oneself, and judge whether to allow transmission again when waiting until the retransmit interval of the next one oneself.At above-mentioned case, if to the failure of the scheduling of resource of HARQ process 0, data of transmitting HARQ process 1 in the 8th frame then, the data based own retransmit interval 8 of HARQ process 0 judges whether to allow to transmit during the 16th frame, as shown in Figure 9 by the time again.
The 3rd execution mode HARQ method of the present invention and second execution mode are roughly the same, its difference only is, in second execution mode, when the same Resource Block that has at least two HARQ processes at same physical frame clashed, transmitting terminal selected to use the HARQ process of conflicted resource piece according to the priority of data in each HARQ process.And in the present embodiment, transmitting terminal selects to use the HARQ process of conflicted resource piece according to the fairness of data in each HARQ process, then preferentially selects to wait for the maximum HARQ process of number of times.That is to say, when the Resource Block conflict takes place when, judge which the wait number of times maximum of data in each HARQ process, do not transmit concerning this piece of data just unfairly if wait for the data of number of times maximum, so the data of the preferential HARQ process of selecting to wait for that number of times is maximum are transmitted during the Resource Block conflict.Carry out scheduling of resource equally for not selected HARQ process, if the scheduling failure, then not selected HARQ process waits until that the retransmit interval of the next one oneself judges whether to allow transmission again, and will wait for that number of times adds 1.
The 4th execution mode HARQ method of the present invention and the 3rd execution mode are roughly the same, its difference only is, in the 3rd execution mode, when the same Resource Block that has at least two HARQ processes at same physical frame clashed, transmitting terminal selected to use the HARQ process of conflicted resource piece according to the fairness of data in each HARQ process.And in the present embodiment, transmitting terminal is a HARQ process of selecting to use the conflicted resource piece according to the combination of priority and fairness.That is to say, consider the retransmit interval of the data in each HARQ process simultaneously and wait for number of times, preferentially select the Resource Block that retransmit interval is less and the data use HARQ process that the wait number of times is more conflicts.Owing to taken into account the priority and the fairness of each HARQ process, therefore can have user satisfaction preferably on the whole.Specifically, can design a Function Y=A * wait number of times-B * retransmit interval, wherein, A and B are two positive numbers, can adjust retransmit interval and wait for the weight of number of times to Y by A and B are set.Each the HARQ process that clashes is calculated Y, select the HARQ process of Y maximum to use the Resource Block that conflicts.If there is the Y of a plurality of HARQ processes identical, then can select one at random.
In the 5th execution mode HARQ method of the present invention, the data to be transferred in the transmitting terminal on each HARQ process transmits with the method in first execution mode and retransmits.Transmitting terminal has HARQ process numbering when sending the data of HARQ process, and this HARQ process numbering can be derived from current frame number or subframe numbers.Receiving terminal to the method for transmitting terminal feeding back ACK/NACK signal as shown in figure 10.
In step 1001, receiving terminal judges whether to form the conflict of ACK/NACK feedback signal.Specifically, because the retransmit interval of the different HARQ processes of transmitting terminal may be different, therefore, may on same physical frame, feed back the ack/nack signal of a plurality of HARQ processes, if the ack/nack signal of a plurality of HARQ processes that need feed back takies same R-ACKCH sign, will form the conflict of ACK/NACK feedback signal on same physical frame.If do not form the conflict of ACK/NACK feedback signal, then enter step 1002, the ACK/NACK that need are fed back repeats to take 4 part resources in the base node, feeds back to transmitting terminal, same prior art.If form the conflict of ACK/NACK feedback signal, then enter step 1003.
In step 1003, receiving terminal uses different orthogonal code quadratures to the ack/nack signal of different HARQ process numberings, and the ack/nack signal of each HARQ process numbering takies an identical base node, as shown in figure 11.
Then, enter step 1004, the signal behind quadrature is repeated to take 4 part resources in the base node, feed back to transmitting terminal, shown in Fig. 12.Owing to used the ack/nack signal of the different HARQ processes of resource bearing of quadrature.Thereby guarantee that ack/nack signal can in time be transferred to the opposite end, guarantee the normal operation of HARQ process.And repeat to take a plurality of base node equally, obtained frequency diversity gain.
The 6th execution mode HARQ method of the present invention and the 5th execution mode are roughly the same, its difference only is, in the 5th execution mode, when receiving terminal judges that the ACK/NACK feedback signal clashes, ack/nack signal to different HARQ process numberings uses different orthogonal code quadratures, solves the collision problem of ACK/NACK feedback signal by the mode of code division multiplexing.And in the present embodiment, on same physical frame, feed back the ack/nack signal of a plurality of HARQ processes by the mode of frequency division multiplexing.That is to say that the ack/nack signal of different HARQ process numberings takies different frequency resources.Such as, the ack/nack signal of the different HARQ processes of same frame internal feedback take different base node, as shown in figure 13; Perhaps, take identical one or more base node, repeat to take a plurality of base node, to obtain frequency diversity gain, as shown in figure 14 at the ack/nack signal of the different HARQ processes of same frame internal feedback.
The 7th execution mode HARQ method of the present invention and the 5th execution mode are roughly the same, its difference only is, in the 5th execution mode, when receiving terminal judges that the ACK/NACK feedback signal clashes, ack/nack signal to different HARQ process numberings uses different orthogonal code quadratures, solves the collision problem of ACK/NACK feedback signal by the mode of code division multiplexing.And in the present embodiment, on same physical frame, feed back the ack/nack signal of a plurality of HARQ processes by time-multiplexed mode.That is to say that the ack/nack signal of different HARQ process numberings takies different time resources, as shown in figure 15.
In the 8th execution mode HARQ method of the present invention, the data to be transferred on each HARQ process transmits with the method in first execution mode and retransmits.In same physical frame, transmit data for fear of parallel HARQ process need, when the retransmit interval of each parallel HARQ process of design, must use into the retransmit interval of multiple relation with different retransmit intervals.That is to say that to the retransmit interval of any two HARQ processes, one of them must be divided exactly by another.
Such as, the HARQ process of two kinds of retransmit intervals is arranged, establishing less retransmit interval is N
1, bigger retransmit interval is N
2, N then
1And N
2The pass be: N
2=hN
1, wherein, h is a positive integer.Though appear in every N
2Have conflict in the individual frame, but, therefore, can more easily avoid this conflict because the multiple of retransmit interval relation makes the position that may clash in the retransmit interval become very regular.
As shown in figure 16, the retransmit interval of Bing Hang HARQ process may be less retransmit interval N
1, also may be bigger retransmit interval N
2, but the physical frame of the required use of different HARQ process has certain rules, such as at the 0th frame to N
1This N of-1 frame
1In the individual frame, the 0th frame is that retransmit interval is N
1The physical frame that used of HARQ process 0, so this HARQ process 0 will be the 0th, N
1, 2N
1..., N
2, N
1+ N
2, 2N
2..., aN
1+ bN
2(a and b are positive integer) frame carries out transfer of data or re-transmission; The 1st frame is retransmit interval N
2The physical frame that used of HARQ process 1, so this HARQ process 1 will be the 1st, N
2+ 1,2N
2+ 1 ..., bN
2+ 1 frame carries out transfer of data or re-transmission.As can be seen, HARQ process 0 and HARQ process 1 are because at retransmit interval N
1In use physical frame with staggering, thereby the conflict of Resource Block can not take place.
The 9th execution mode HARQ method of the present invention and the 8th execution mode are basic identical, its difference only is, in the 8th execution mode, HARQ process with different retransmit intervals is used different physical frames with staggering, but be not that each physical frame all will be used by some HARQ processes, and in the present embodiment, the Resource Block of each physical frame all will be utilized fully.
Specifically, as shown in figure 17, two kinds of different retransmit intervals are arranged, a kind of is 5 frame retransmit intervals, and another kind is 10 frame retransmit interval, i.e. N
1Be 5, N
2Be 10, h is 2.The retransmit interval of HARQ process 1, HARQ process 2, HARQ process 4 and HARQ process 5 is 5 frames, and the retransmit interval of HARQ process 3 and HARQ process 6 is 10 frames.Be not difficult to find, if HARQ process 1, HARQ process 2, HARQ process 4 and HARQ process 5 are called with N
1Be the HARQ process of retransmit interval, HARQ process 3 and HARQ process 6 are called with N
2Be the HARQ process of retransmit interval, so, by with N
2For the Resource Block that the HARQ process of retransmit interval is used will be at every N
1Same position in the individual frame occurs, and is bound to occur at same position, if at N
1There is j in the individual frame with N
2For the HARQ process of retransmit interval, then at N
2To there be h * j in the individual frame with N
2HARQ process for retransmit interval.
That is to say, if a Resource Block of p frame is with N
2For the HARQ process of retransmit interval, so at p+N
1, p+2N
1, p+3N
1..., p+ (h-1) N
1In the frame, this Resource Block also is with N
2Be the HARQ process of retransmit interval, but they do not belong to the HARQ process of same transmission or re-transmission.As in the drawings, the 2nd, N
1+ 2 frames all are retransmit interval N
2The employed Resource Block of HARQ process, they are all at every N
1The 2nd frame in the individual frame occurs, but they do not belong to a HARQ process, and one is HARQ process 3, and another is a HARQ process 6.The 2nd frame and N
2It is same with N that+1 frame belongs to
2HARQ process 3 for retransmit interval; N
1+ 2 frames and N
2+ N
1It is same with N that+2 frames belong to
2HARQ process 6 for retransmit interval.Therefore, if can satisfy
The Resource Block of each frame is all utilized fully, the Resource Block of vacating because of retransmit interval can not occur.Wherein, m
1Be every N
1Retransmit interval is N in the individual frame
1HARQ cross number of passes, m
2Be every N
1Retransmit interval is N in the individual frame
2HARQ cross number of passes, m
1+ m
2=N
1In the present embodiment, m
1Be 4, m
2Be 1.
The tenth execution mode HARQ method of the present invention and the 9th execution mode are basic identical, and its difference only is, in the 9th execution mode, and every N
1Retransmit interval is N in the individual frame
1HARQ to cross number of passes be 4, every N
1Retransmit interval is N in the individual frame
2HARQ to cross number of passes be 1, and in the present embodiment, every N
1Retransmit interval is N in the individual frame
1HARQ cross number of passes 3, every N
1Retransmit interval is N in the individual frame
2HARQ to cross number of passes be 2.As shown in figure 18, the retransmit interval of HARQ process 1, HARQ process 2 and HARQ process 4 is 5 frames, and the retransmit interval of HARQ process 3, HARQ process 5, HARQ process 6 and HARQ process 7 is 10 frames.This shows, in the system transmissions process, can adapt to the demand of different business by increasing or reducing the HARQ process number that 5 frames retransmit and 10 frames retransmit.
The 11 execution mode HARQ method of the present invention and the 9th execution mode are basic identical, and its difference only is that in the 9th execution mode, two kinds of retransmit intervals are respectively 5 frames and 10 frames, and in the present embodiment, two kinds of retransmit intervals are respectively 6 frames and 12 frames.That is to say N
1Be 6, N
2Be 12, h is similarly 2.
As shown in figure 19, the retransmit interval of HARQ process 1, HARQ process 2, HARQ process 4, HARQ process 5 and HARQ process 6 is 6 frames, and the retransmit interval of HARQ process 3 and HARQ process 7 is 12 frames.Owing to satisfy N
2=hN
1, so each HARQ process can not produce the conflict of Resource Block, and at every N
1Retransmit interval is N in the individual frame
1HARQ cross number of passes 5, every N
1Retransmit interval is N in the individual frame
2HARQ to cross number of passes be 1, satisfy
Condition, therefore, can guarantee that each physical frame can both be effectively utilized.
The 12 execution mode HARQ method of the present invention and the 11 execution mode are basic identical, and its difference only is, in the 11 execution mode, and every N
1Retransmit interval is N in the individual frame
1HARQ to cross number of passes be 5, every N
1Retransmit interval is N in the individual frame
2HARQ to cross number of passes be 1, and in the present embodiment, every N
1Retransmit interval is N in the individual frame
1HARQ cross number of passes 4, every N
1Retransmit interval is N in the individual frame
2HARQ to cross number of passes be 2.As shown in figure 20, the retransmit interval of HARQ process 1, HARQ process 3, HARQ process 5 and HARQ process 6 is 6 frames, and the retransmit interval of HARQ process 2, HARQ process 4, HARQ process 7 and HARQ process 8 is 12 frames.This shows, in the system transmissions process, can adapt to the demand of different business by selecting to increase or reduce the HARQ process number of re-transmission of 6 frames and the re-transmission of 12 frames.
Need to prove, more than a plurality of embodiment be example explanation with two kinds of retransmit interval structures, but in fact can expand in a plurality of retransmit interval structures, only need to satisfy: N
2=h
1N
1, N
3=h
2N
2... and
Can avoid the conflict of Resource Block and the waste of Resource Block multiple the biography in the HARQ structure at interval, wherein, m
1+ m
2+ m
3+ ...=N
1
The 13 execution mode HARQ entity of the present invention comprises the interval determining unit of retransmit interval that is used for determining according to the type of service of data to be transferred the retransmit interval of this data to be transferred; Be used for this data to be transferred being carried out HARQ transmission and re-transmission, up to the delivery unit that is correctly decoded or reaches maximum retransmission with the determined retransmit interval of this interval determining unit.Owing to can use different retransmit intervals to different data, therefore can make HARQ become more flexible, can in parallel HARQ process, satisfy the different delay demand of different pieces of information.
May need to use the collision problem that same Resource Block produced of same physical frame in order to solve data to be transferred on the different HARQ processes, also need comprise the conflict identifying unit that is used to judge whether that at least two HARQ processes clash at the same Resource Block of same physical frame in this HARQ entity; Be used for when this conflict identifying unit is judged the existence conflict,, selecting one of them HARQ process to use the selected cell of the Resource Block of conflict according to priority, fairness or the priority of data and the combination of fairness in each HARQ process; Be used for when this conflict identifying unit is judged the existence conflict, use to the HARQ process of not chosen by this selected cell other resource block scheduling of same physical frame, the HARQ process that the not selected unit of indication is chosen if scheduling of resource is failed sends the scheduling of resource unit of data in its next retransmit interval.
Because the retransmit interval as the different HARQ processes of the HARQ entity of transmitting terminal may be different, therefore, may on same physical frame, feed back the ack/nack signal of a plurality of HARQ processes, therefore, in order to solve the collision problem of ACK/NACK feedback signal, also need comprise feedback module in this HARQ entity, be used to judge whether that at least two HARQ processes are at same physical frame transferring ACK/NACK signal, if then according to the numbering of each HARQ process, use the ack/nack signal of the different HARQ processes of resource bearing of quadrature, to guarantee that ack/nack signal can in time be transferred to the opposite end, guarantee the normal operation of HARQ process.
The ack/nack signal that one of can be in the following manner uses the different HARQ processes of resource bearing of quadrature:
The ack signal of different HARQ process numberings takies different frequency resources; Or,
The ack signal of different HARQ process numberings takies different time resources; Or,
The ack signal of different HARQ process numberings uses different orthogonal codes.
The 14 execution mode of the present invention relates to the HARQ method, and present embodiment has solved the collision problem of ack/nack signal on the basis of the 8th execution mode.
Specifically, be example with the HARQ process that two kinds of retransmit interval types are arranged, establish short weight and pass N at interval
1The corresponding T of ack/nack signal after data transmission
1The frame transmission, long retransmit interval N
2The corresponding T of ACKK/ACK signal after data transmission
2T is being satisfied in the frame transmission
2=T
1+ N
1(k is a nonnegative integer) just can make retransmit interval N under the situation of k
1With retransmit interval N
2Ack/nack signal do not clash.In actual applications, N is generally arranged
2=hN
1, h=2.For the reverse ack/nack signal of forward traffic channel, because the disposal ability of portable terminal is limited, the k value is 1; To the forward ack/NACK signal of reverse traffic channel, the k value can be 0 or 1.
As shown in figure 21, the HARQ process of two kinds of retransmit interval types is arranged, short retransmit interval N
1Be 5 frames, long retransmit interval N
2Be 10 frames.HARQ process 1, HARQ process 2, HARQ process 4 and HARQ process 5 are for retransmitting the HARQ process that is spaced apart 5 frames; HARQ process 3 and HARQ process 6, for retransmitting the HARQ process be spaced apart 10 frames.With 5 frames is the 3rd frame feeding back ACK/NACK signal of HARQ process after data send of retransmit interval; With 10 frames is the 8th frame feeding back ACK/NACK signal of HARQ process after data send of retransmit interval, and k gets 1.
For the Resource Block that makes each frame is all utilized fully, the Resource Block vacated because of retransmit interval can not appear, needs to satisfy
In, m
1Be every N
1Retransmit interval is N in the individual frame
1HARQ cross number of passes, m
2Be every N
1Retransmit interval is N in the individual frame
2HARQ cross number of passes, m
1+ m
2=N
1In the present embodiment, m
1Be 4, m
2Be 1.
Be not difficult to find,, the conflict of Resource Block or ack/nack signal do not take place between them though in system configuration, there is the HARQ process of two kinds of retransmit intervals.0th, the ack/nack signal of 1,3,4 frame data feeds back at the 3rd, 4,6,7 frames respectively ... the ack/nack signal of the 2nd, 7 frame data feeds back at the 10th, 15 frames respectively ... the ack/nack signal of two kinds of different retransmit intervals does not clash.
Equally, for HARQ process, be N as long as satisfy retransmit interval more than two retransmit interval types
iThe T of ack/nack signal after data send of HARQ process
iThe frame transmission, retransmit interval is greater than N
iN
I+1The T of ack/nack signal after data send of HARQ process
I+1The frame transmission, T
I+1With T
iSatisfy relation: T
I+1=T
i+ N
iK, wherein, k is a nonnegative integer, just can avoid the conflict of ack/nack signal.
The 15 execution mode of the present invention relates to the HARQ method, present embodiment is on the basis of the 14 execution mode, solved the retransmit interval assignment problem of Resource Block, promptly in the system of HARQ process, illustrated which kind of retransmit interval Resource Block is subordinated to a plurality of retransmit interval types.
Specifically, the base station obtains the retransmit interval type of Resource Block by top signaling.Wherein, top signaling comprises the type and the ability indication of portable terminal, the business that portable terminal needs etc.The base station will be different with different service provisionings to different portable terminals retransmit interval, which kind of retransmit interval what promptly determine this portable terminal uses at certain professional HARQ process.
Such as, the base station will be by the indicated mobile terminal style of top signaling, for the portable terminal that can only support longer retransmit interval (may be that decoding capability is relatively poor, need longer time decoder), with the Resource Block of the long retransmit interval of an assignment, i.e. the HARQ process of the longer retransmit interval of assignment; The portable terminal the strongest to ability can pass Resource Block at interval to all assignment shorts weight of all business, i.e. assignment passes HARQ process at interval than short weight; To ability between top portable terminal between the two, will be according to the traffic type information that comprises in the top signaling, the Resource Block that the business stronger to real-time (as speech business) will adopt short weight to pass the interval transmits, and will adopt the Resource Block of long retransmit interval to transmit to the bigger business (such as the MCW transmission) of long period decoding that needs of packet.
The base station sends to portable terminal, the HARQ process of notifying this portable terminal to use which kind of retransmit interval with the retransmit interval type of the Resource Block of the assignment forward control channel by AIE.In the prior art, the structure of AIE forward control channel F-SCCH is as shown in table 1.
| Field | Block type | MACI D | Persis- tent | ChanID | PF | Durati on | Ext. TX | Timi ng | Suppl. | Rank |
| The |
3 | 9-11 | 1 | 6-8 | 4-6 | 2 | 1 | 6 | 1 | 2 |
| Access Grant | 000 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 |
| FLAM | 010 | 0 | 1 | 1 | 1 | 0 | 1 | 0 | 1 | 0 |
| RLAM | 011 | 0 | 1 | 1 | 1 | 0 | 1 | 0 | 1 | 0 |
| MCW FLAM1 | 100 | TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD |
| MCW FLAM2 | 101 | TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD |
| SCW FLAB | 110 | TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD |
Table 1
For the HARQ process of two kinds of retransmit intervals, only need in control channel, add the territory of 1 bit, promptly add the retransmit interval type that column weight biography spacing identification just can the assigned resources piece at table 1.Owing to only need in FLAM and two pieces of RLAM (block), increase this indication, and FLAM and RLAM are not the longest in all pieces, so the not variation of the maximum length of piece is as shown in table 2.
| Field | Block type | MACI D | Persis- tent | ChanI D | PF | Durati on | Ext. TX | Timi ng | Supp l. | Ran k | Retransmit interval |
| The |
3 | 9-11 | 1 | 6-8 | 4-6 | 2 | 1 | 6 | 1 | 2 | 1 |
| Access Grant | 000 | 1 | 0 | 0 | 0 | 0 | 0 | 1 | 0 | 0 | 0 |
| FLAM | 010 | 0 | 1 | 1 | 1 | 0 | 1 | 0 | 1 | 0 | 1 |
| RLAM | 011 | 0 | 1 | 1 | 1 | 0 | 1 | 0 | 1 | 0 | 1 |
| |
100 | TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD | |
| MCW FLAM | |||||||||||
| 2 | 101 | TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD |
| SCW FLAB | 110 | TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD | TBD |
Table 2
Be not difficult to find that the retransmit interval type of HARQ process is selected according to top signaling in the base station, and give terminal with the retransmit interval type notification of HARQ process, solved the retransmit interval assignment problem of Physical Resource Block by the forward control channel among the AIE.
The 16 execution mode of the present invention relates to the HARQ entity, comprises the interval determining unit of retransmit interval that is used for determining according to the type of service of data to be transferred the retransmit interval of this data to be transferred; Be used for this data to be transferred being carried out HARQ transmission and re-transmission, up to the delivery unit that is correctly decoded or reaches maximum retransmission with the determined retransmit interval of this interval determining unit.Owing to can use different retransmit intervals to different data, therefore can make HARQ become more flexible, can in parallel HARQ process, satisfy the different delay demand of different pieces of information.Wherein, the HARQ process of different retransmit intervals meets the following conditions:
To the retransmit interval of any two HARQ processes, one of them can be divided exactly by another.And, with minimum retransmission interval N
1Be the cycle, at every N
1In the individual continuous physical frame, the retransmit interval of the HARQ process of each physical frame is fixed, and uses the HARQ of various retransmit intervals to cross the number of passes sum and is less than or equal to N
1
Because the retransmit interval as the different HARQ processes of the HARQ entity of transmitting terminal may be different, therefore, may on same physical frame, feed back the ack/nack signal of a plurality of HARQ processes, therefore, in order to solve the collision problem of ACK/NACK feedback signal, also need comprise the ack/nack signal transport module in this HARQ entity, being used in retransmit interval is N
iThe data of the HARQ process T after sending
iFrame transferring ACK/NACK signal is greater than N in retransmit interval
iN
I+1The data of the HARQ process T after sending
I+1Frame transferring ACK/NACK signal, T
I+1With T
iSatisfy relation: T
I+1=T
i+ N
iK, wherein, k is a nonnegative integer.Because the disposal ability of portable terminal is limited, thus data sending terminal when being portable terminal the k value be 1; The k value can be 0 or 1 when data sending terminal was the base station.
Because different HARQ processes can be used different retransmit intervals, therefore, in order to solve the retransmit interval assignment problem of Resource Block, also need comprise notification module in this HARQ entity, be used for the retransmit interval type by the forward control channel notice HARQ process of AIE, this HARQ entity is selected the retransmit interval type of HARQ process according to top signaling.
Though pass through with reference to some of the preferred embodiment of the invention, the present invention is illustrated and describes, but those of ordinary skill in the art should be understood that and can do various changes to it in the form and details, and without departing from the spirit and scope of the present invention.
Claims (23)
1. a mixed self-adapting retransmission request method is characterized in that, comprises following steps:
Determine the retransmit interval of data to be transferred, this data to be transferred is carried out mixed self-adapting repeat requests HARQ transmission and retransmit, up to being correctly decoded or reaching maximum retransmission with this retransmit interval.
2. mixed self-adapting retransmission request method according to claim 1 is characterized in that, determines the retransmit interval of this data to be transferred according to the type of service of described data to be transferred.
3. mixed self-adapting retransmission request method according to claim 1, it is characterized in that, if at least two HARQ processes clash at the same Resource Block of same physical frame, then select one of them HARQ process to use this Resource Block, other HARQ process is used other Resource Block of same physical frame by scheduling of resource, if the scheduling of resource failure, then other HARQ process sends data in its next retransmit interval.
4. mixed self-adapting retransmission request method according to claim 3 is characterized in that, according to priority, fairness or the priority of data and the combination of fairness in each HARQ process, selects one of them HARQ process to use the Resource Block of conflict.
5. mixed self-adapting retransmission request method according to claim 4 is characterized in that, when selecting according to priority, preferentially selects the HARQ process of retransmit interval minimum;
When selecting according to fairness, the preferential maximum HARQ process of wait number of times of selecting;
During according to the combination selection of priority and fairness, preferentially select retransmit interval less and wait for the more HARQ process of number of times.
6. mixed self-adapting retransmission request method according to claim 1, it is characterized in that, if at least two HARQ processes are not confirmed the NACK signal at same physical frame acknowledge ACK/, then, use the ACK/ACK signal of the different HARQ processes of resource bearing of quadrature according to the numbering of each HARQ process.
7. mixed self-adapting retransmission request method according to claim 6 is characterized in that, uses one of in the following manner the ack/nack signal of the different HARQ processes of resource bearing of quadrature:
The ack signal of different HARQ process numberings takies different frequency resources; Or,
The ack signal of different HARQ process numberings takies different time resources; Or,
The ack signal of different HARQ process numberings uses different orthogonal codes.
8. mixed self-adapting retransmission request method according to claim 1 is characterized in that, the retransmit interval of the HARQ process that each is parallel meets the following conditions:
To the retransmit interval of any two HARQ processes, one of them must be divided exactly by another;
With minimum retransmission interval N
1Be the cycle, at every N
1In the individual continuous physical frame, the retransmit interval of the HARQ process of each physical frame is fixed, and uses the HARQ of various retransmit intervals to cross the number of passes sum and is less than or equal to N
1
9. mixed self-adapting retransmission request method according to claim 8 is characterized in that, for greater than N
1N
iBe the physical frame of retransmit interval, every N
i/ N
1The individual continuous N that is spaced apart
1Physical frame by N
i/ N
1Individual different HARQ process is used.
10. mixed self-adapting retransmission request method according to claim 8 is characterized in that, each parallel HARQ process is used two retransmit intervals, is respectively 5 and 10, perhaps 6 and 12.
11. mixed self-adapting retransmission request method according to claim 8 is characterized in that,
Retransmit interval is N
iThe T of ack/nack signal after data send of HARQ process
iThe frame transmission, retransmit interval is greater than N
iN
I+1The T of ack/nack signal after data send of HARQ process
I+1The frame transmission, T
I+1With T
iSatisfy following relation: T
I+1=T
i+ N
iK, wherein, k is a nonnegative integer.
12. mixed self-adapting retransmission request method according to claim 11 is characterized in that,
When data sending terminal is the base station, k=1;
When data sending terminal is portable terminal, k=0 or 1.
13. mixed self-adapting retransmission request method according to claim 11 is characterized in that,
Notify the retransmit interval type of described HARQ process by the forward control channel in the AIE.
14. mixed self-adapting retransmission request method according to claim 11 is characterized in that,
Select the retransmit interval type of described HARQ process according to top signaling.
15., it is characterized in that described method is applied to the transfer of data of upstream or downstream signal according to each described mixed self-adapting retransmission request method in the claim 1 to 14.
16. a mixed self-adapting repeat requests entity is characterized in that, comprises:
Determining unit at interval is used for determining the retransmit interval of data to be transferred;
Delivery unit is used for described data to be transferred is carried out HARQ transmission and retransmitting with the determined retransmit interval of described interval determining unit, up to being correctly decoded or reaching maximum retransmission.
17. mixed self-adapting repeat requests entity according to claim 16 is characterized in that described interval determining unit is determined the retransmit interval of this data to be transferred according to the type of service of described data to be transferred.
18. mixed self-adapting repeat requests entity according to claim 16 is characterized in that, also comprises:
The conflict identifying unit is used to judge whether that at least two HARQ processes clash at the same Resource Block of same physical frame;
Selected cell is used for according to priority, fairness or the priority of data and the combination of fairness in each HARQ process, selecting one of them HARQ process to use the Resource Block of conflict when described conflict identifying unit is judged the existence conflict;
The scheduling of resource unit, be used for when described conflict identifying unit is judged the existence conflict, use to the HARQ process of not chosen by described selected cell other resource block scheduling of same physical frame, indication is sent data by the HARQ process that described selected cell is chosen in its next retransmit interval if scheduling of resource is failed.
19. according to each described mixed self-adapting repeat requests entity in the claim 16 to 18, it is characterized in that, also comprise feedback module, be used to judge whether that at least two HARQ processes are at same physical frame transferring ACK/NACK signal, if then according to the numbering of each HARQ process, use the ack/nack signal of the different HARQ processes of resource bearing of quadrature.
20., it is characterized in that also comprise the ack/nack signal transport module, being used in retransmit interval is N according to each described mixed self-adapting repeat requests entity in the claim 16 to 18
iThe data of the HARQ process T after sending
iFrame transferring ACK/NACK signal is greater than N in retransmit interval
iN
I+1The data of the HARQ process T after sending
I+1Frame transferring ACK/NACK signal, T
I+1With T
iSatisfy following relation: T
I+1=T
i+ N
iK, wherein, k is a nonnegative integer.
21. mixed self-adapting repeat requests entity according to claim 20 is characterized in that,
When data sending terminal is portable terminal, k=0 or 1;
When data sending terminal is the base station, k=1.
22. mixed self-adapting repeat requests entity according to claim 20 is characterized in that, also comprises notification module, is used for notifying by the forward control channel of AIE the retransmit interval type of described HARQ process.
23. mixed self-adapting repeat requests entity according to claim 20 is characterized in that, described mixed self-adapting repeat requests entity is selected the retransmit interval type of described HARQ process according to top signaling.
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| CNA2006101533070A CN101119184A (en) | 2006-08-02 | 2006-09-07 | Mixing self-adaption retransmission request method and entity |
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