CN103916225B - Mixed automatic retransfer redundancy versions adaptive selection method and device - Google Patents
Mixed automatic retransfer redundancy versions adaptive selection method and device Download PDFInfo
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Abstract
The present invention relates to a kind of mixed automatic retransfer redundancy versions adaptive selection method and device, the method includes：Receive HARQ and merge instruction, selection acquiescence RV subsets carry out HARQ scheduling in Preset Time, obtain packet loss and average repeat time of the acquiescence RV subsets in Preset Time；Judge that whether the average repeat time for giving tacit consent to RV subsets, more than threshold value, if so, then selection choosing residue RV subsets carry out HARQ scheduling in Preset Time successively, obtains packet loss and average repeat time of the residue RV subsets in Preset Time；Compare the packet loss and average repeat time of all RV subsets successively, optimal RV subsets are selected according to comparative result, it is acquiescence RV subsets to set optimal RV subsets.The method compare when HARQ merges the average repeat time and packet loss of each RV subset by setting multiple RV subsets, selects the RV subsets being best suitable for, and reduces the average repeat time and packet loss of wireless communication system.
Description
Technical field
The present invention relates to communication technical field, more particularly to a kind of mixed automatic retransfer redundancy versions adaptive selection method
And device.
Background technology
HARQ（Mixed automatic retransfer）It is a kind of error-control technique that autonomous retransmission and forward error correction coding are used in combination,
It is widely used in wireless communication field.The use of the purpose of mixed automatic retransfer technology produced by functions of retransmission and time diversity
Gain, it is ensured that the correct transmission of packet, improves the reliability of wireless communication system.
Incremental redundancy is one of implementation of mixed automatic retransfer technology, and it retransmits the number for all sending different content every time
According to bag.When data are transmitted first, encoding rate is high, and redundancy is small, if receiving terminal fails to be correctly decoded, transmitting terminal then can be by increasing
The mode of check bit information reduces the encoding rate for retransmitting code word next time, to better conform to the situation of present channel, receiving terminal
The data that will can be received twice merge decoding, so as to improve error correcting capability.Number of retransmissions is more, and check bit information is accumulative just
It is more, so as to realize higher being decoded into power.Wherein, different redundant bit information are by RV（Redundancy versions）Realize
, RV values are smaller to represent that the check bit sent in data is fewer, and useful systematic bits are more；Conversely, RV values are bigger to represent hair
Send the check bit in data more, useful systematic bits are fewer.
When multiple terminals is accessed and enables HARQ in wireless communication system, due to the wireless channel between different terminals and base station
Situation be it is different, even if same terminal in different moment channel conditions it could also be possible that different, in this case, if
Base station carries out HARQ merging only with a kind of RV sequences, can not be applied to all of channel.For some terminals, due to RV sequences
The unreasonable system average repeat time that is likely to result in that row are used is too high, or even packet loss.
The content of the invention
The main object of the present invention is to provide a kind of mixed automatic retransfer redundancy versions adaptive selection method and device, purport
Reducing the average repeat time and packet loss of wireless telecommunication system.
The present invention proposes a kind of mixed automatic retransfer redundancy versions adaptive selection method, including：
Receive HARQ and merge instruction, selection acquiescence RV subsets carry out HARQ scheduling in Preset Time, obtain the acquiescence
Packet loss and average repeat time of the RV subsets in the Preset Time；
Whether the average repeat time is judged more than threshold value, if so, then selecting remaining RV subsets successively default
HARQ scheduling is carried out in time, packet loss peace re-transmission time of the remaining RV subsets in the Preset Time is obtained
Number；
Compare the packet loss and average repeat time of all RV subsets successively, optimal RV subsets selected according to comparative result,
It is acquiescence RV subsets to set the optimal RV subsets.
Preferably, the packet loss and average repeat time that all RV subsets are compared successively, selects according to comparative result
The step of optimal RV subsets, includes：
Judge the acquiescence RV subsets whether be by preset order arrange the first cis-position RV subsets；
If so, the packet loss peace according to preset order acquiescence RV subsets RV subsets adjacent thereto is retransmitted
Number of times, more excellent RV subsets are selected according to comparative result；
Compare the packet loss and average repeat time of more excellent RV subsets and next RV subsets according to preset order, according to
Comparative result selects more excellent RV subsets, and the rest may be inferred, selects optimal RV subsets.
Preferably, it is described to judge also to include after the step of whether the acquiescence RV subsets are the RV subsets of the first cis-position：
If judging, the default subset is not the RV subsets of the first cis-position, judges whether the acquiescence RV subsets are by pre-
If tactic last RV subset；
If so, then comparing the packet loss peace re-transmission time of the acquiescence RV subsets and the RV subsets of first cis-position
Number, more excellent RV subsets are selected according to comparative result；
More excellent RV subsets and packet loss and average repeat time with next RV subsets, root are compared according to preset order
More excellent RV subsets are selected according to comparative result, the rest may be inferred, select optimal RV subsets.
Preferably, it is described to judge whether the acquiescence RV subsets are the RV subsets of last arranged by preset order
Also include after step：
If judging, the acquiescence RV subsets are not the RV subsets of last arranged by preset order, according to default suitable
The packet loss and average repeat time of sequence acquiescence RV subsets RV subsets adjacent thereto, select according to comparative result
More excellent RV subsets；
Compare the packet loss and average repeat time of more excellent RV subsets and next RV subsets according to preset order, according to
Comparative result selects more excellent RV subsets, and the rest may be inferred, selects preferred RV subsets；
Compare the packet loss and average repeat time of the preferred RV subsets and the first cis-position RV subsets, according to comparative result
Select more excellent RV subsets；
According to comparing more excellent RV subsets with preset order with the packet loss and average repeat time of next RV subsets, according to
Comparative result selects more excellent RV subsets, and the rest may be inferred, selects optimal RV subsets.
Preferably, it is described compare two RV subsets packet loss and average repeat time the step of include：
Judge whether two packet loss of RV subsets are identical, if it is not, then the low RV subsets of selection packet loss are more excellent RV
Collection；
If so, then judge whether the average repeat time of described two RV subsets is identical, if judging described two RV subsets
Average biography number of times it is different, then it is more excellent RV subsets to select the low RV subsets of average repeat time；
If judging, the average repeat time of described two RV subsets is identical, according to the forward RV of preset order selecting sequence
Subset is more excellent RV subsets.
Preferably, packet loss and average repeat time of the RV subsets for obtaining the acquiescence in the Preset Time
The step of include：
When HARQ scheduling is carried out, for a HARQ process, if receiving the successful feedback information of data is activation, record
Current HARQ transmission number of times；If the feedback information of data is activation failure is received, and data transmission times are equal to threshold value, then remember
It is a packet loss；
Calculate the packet loss and average repeat time of multiple HARQ processes in Preset Time.
The present invention also proposes a kind of adaptively selected device of mixed automatic retransfer redundancy versions, including：
Processing module, for receive HARQ merge instruction, and select acquiescence RV subsets HARQ tune is carried out in Preset Time
Degree, and select the remaining RV subsets HARQ scheduling is carried out in Preset Time successively；
Acquisition module, for obtaining packet loss peace re-transmission time of the RV subsets of the acquiescence in the Preset Time
Number, and obtain packet loss and average repeat time of the remaining RV subsets in the Preset Time；
Judge module, for judging the average repeat time whether more than threshold value；
Comparison module, packet loss and average repeat time for comparing all RV subsets successively, selects according to comparative result
Select optimal RV subsets；
Setup module, is acquiescence RV subsets for setting the optimal RV subsets.
Preferably, the comparison module includes：
Judging submodule, for judge the acquiescence RV subsets whether be by preset order arrange the first cis-position RV
Collection；
Comparison sub-module, the RV subsets for comparing the acquiescence RV subsets and first cis-position, according to comparative result
Select more excellent RV subsets；And according to preset order compare more excellent RV subsets and with next RV subsets, according to comparing knot
Fruit selects more excellent RV subsets, the like, select optimal RV subsets.
Preferably, the judging submodule is additionally operable to judge whether the acquiescence RV subsets are to be arranged most by preset order
Latter RV subset；The comparison sub-module, if being additionally operable to judge that the acquiescence RV subsets are by the last of preset order arrangement
One RV subset, then the acquiescence RV subsets and the RV subsets of first cis-position, select more excellent according to comparative result
RV subsets.
Preferably, the comparison sub-module is additionally operable to compare more excellent RV subsets and next subset according to preset order,
More excellent RV subsets are selected according to comparative result, the rest may be inferred, select preferred RV subsets；And relatively more described preferred RV subsets
With the first cis-position RV subsets, more excellent RV subsets are selected according to comparative result.
Preferably, the comparison sub-module includes：
Whether the first judging unit is identical for judging two packet loss of RV subsets；
Whether the second judging unit is identical for judging two average repeat times of RV subsets；
Select unit, the RV subsets for selecting packet loss low are more excellent RV subsets, the low RV of selection average repeat time
Subset is more excellent RV subsets, and is more excellent RV subsets according to the forward RV subsets of preset order selecting sequence.
Preferably, the acquisition module includes：
Receiving unit, the feedback information for receiving data is activation success or failure in HARQ processes；
Recording unit, number of retransmissions and packet loss information for recording each HARQ process
Computing unit, packet loss and average repeat time for calculating RV subsets.
The mixed automatic retransferring method and device of information proposed by the invention, the method pass through to set multiple RV subsets,
When HARQ merging is carried out, compare the average repeat time and packet loss of each RV subset, select and be best suitable for transmission channel
RV subsets, reduce the average repeat time and packet loss of wireless communication system.
Brief description of the drawings
Fig. 1 is the schematic flow sheet of mixed automatic retransfer redundancy versions adaptive selection method preferred embodiment of the present invention；
Fig. 2 be mixed automatic retransfer redundancy versions adaptive selection method of the present invention in select the optimal embodiment of RV subsets one
Schematic flow sheet；
Fig. 3 be mixed automatic retransfer redundancy versions adaptive selection method of the present invention in select optimal another implementation of RV subsets
The schematic flow sheet of example；
Fig. 4 be mixed automatic retransfer redundancy versions adaptive selection method of the present invention in select optimal RV subsets further to implement
The schematic flow sheet of example；
Fig. 5 is to compare two packet loss of RV subsets in mixed automatic retransfer redundancy versions adaptive selection method of the present invention
With the schematic flow sheet of average repeat time；
Fig. 6 is the structural representation of the adaptively selected device preferred embodiment of mixed automatic retransfer redundancy versions of the present invention；
Fig. 7 is the structural representation of comparison module in the adaptively selected device of mixed automatic retransfer redundancy versions of the present invention；
Fig. 8 is the comparison sub-module in the comparison module of the adaptively selected device of mixed automatic retransfer redundancy versions of the present invention
Structural representation；
Fig. 9 is the structural representation of acquisition module in the adaptively selected device of mixed automatic retransfer redundancy versions of the present invention.
The realization of the object of the invention, functional characteristics and advantage will be described further referring to the drawings in conjunction with the embodiments.
Specific embodiment
Below in conjunction with the accompanying drawings and specific embodiment is described further with regard to technical scheme.It should be appreciated that this
The described specific embodiment in place is only used to explain the present invention, is not intended to limit the present invention.
Reference picture 1, Fig. 1 is the flow of mixed automatic retransfer redundancy versions adaptive selection method preferred embodiment of the present invention
Schematic diagram.
The present embodiment proposes a kind of mixed automatic retransfer redundancy versions adaptive selection method, including：
Step S10, receives HARQ and merges instruction, and selection acquiescence RV subsets carry out HARQ scheduling in Preset Time；
Multiple different RV subsets, i.e. RV subsets 0, RV subsets 1, RV subsets will be divided into for merging the RV sequences of HARQ
2 ... ..., RV subset N, instruction is merged when HARQ is received, and selection acquiescence RV subsets carry out HARQ scheduling in Preset Time, write from memory
It can be that RV subsets 0 can also be other RV subsets to recognize RV subsets.The order of the RV values in each RV subset is different, and RV values are smaller
Represent that the check bit sent in data is fewer, systematic bits are more, RV values are bigger to represent the check bit sent in data more
Many, systematic bits are fewer.
Step S20, obtains packet loss and average repeat time of the RV subsets of acquiescence in the Preset Time；
Selection acquiescence RV subsets carry out HARQ scheduling in default time, when HARQ scheduling is carried out, for a HARQ
Process, if receiving the successful feedback information of data is activation, shows that data are correctly decoded reception by terminal, records current
HARQ transmission number of times；If the feedback information of data is activation failure is received, and the number of transmissions is equal to threshold value, then be designated as once losing
Bag, you can calculate the packet loss and average repeat time of acquiescence RV subsets multiple HARQ processes in Preset Time.
Whether step S30, judge to give tacit consent to the average repeat time of RV subsets more than threshold value；
Obtain in the Preset Time after the packet loss and average repeat time of acquiescence RV subsets, judge the average of RV subsets
Number of retransmissions whether be more than threshold value, illustrate that the RV subsets are not suitable for present channel if threshold value is greater than, can using other compared with
Excellent RV subsets carry out HARQ scheduling, if the average repeat time of acquiescence RV subsets is less than or equal to threshold value, continue using silent
Recognizing RV subsets carries out HARQ scheduling, untill the average repeat time of acquiescence RV subsets is more than threshold value.
Step S40, selects remaining RV subsets that HARQ scheduling is carried out in Preset Time successively, obtains remaining RV
Collect packet loss and average repeat time in Preset Time；
When the average repeat time for giving tacit consent to RV subsets is more than threshold values, other remaining RV subsets can be successively selected to carry out
HARQ is dispatched, and such as step S20 methods describeds obtain the packet loss and average repeat time of each RV subset successively.
Step S50, the packet loss and average repeat time of more all RV subsets, select optimal according to comparative result successively
RV subsets；
In the packet loss and average repeat time of more all RV subsets, can successively be compared according to preset order, also may be used
Other comparative sequences are designed, RV subsets are compared two-by-two, two packet loss of RV subsets are first compared when relatively, if packet loss
Rate is identical, compares the two RV average repeat times of oneself.
Step S60, it is acquiescence RV subsets to set optimal RV subsets.
Optimal RV subsets, i.e. packet loss and average repeat time are can select after completeer all RV subsets most
Few subset, is optimal RV subsets instead of original acquiescence RV subsets, carries out this HARQ merging, is merged next HARQ is received
Order when, the RV subsets for acquiescence RV subsets, judge whether the average repeat time of the RV subsets is more than in Preset Time
Threshold values, if so, then reselecting optimal RV subsets.
The mixed automatic retransferring method of information proposed by the invention, sets multiple RV subsets, when HARQ merging is carried out,
Compare the average repeat time and packet loss of each RV subset, select the RV subsets for being best suitable for transmission channel, on the one hand reduce
The packet loss of wireless communication system, increased the reliability of system transfers, on the other hand reduce the flat of wireless communication system
Equal number of retransmissions, improves the utilization rate of system frequency resource.
Reference picture 2, Fig. 2 be mixed automatic retransfer redundancy versions adaptive selection method of the present invention in select optimal RV subsets
The schematic flow sheet of one embodiment.
Based on above-described embodiment, step S50 includes：
Step S51, judge to give tacit consent to RV subsets whether be the first cis-position arranged by preset order RV subsets；
Step S52, if judging the RV subsets that acquiescence RV subsets are the first cis-position arranged by preset order, according to default suitable
The packet loss and average repeat time of sequence acquiescence RV subsets RV subsets adjacent thereto, select according to comparative result
More excellent RV subsets；
Step S53, retransmits according to the packet loss peace that preset order compares more excellent RV subsets and next RV subsets
Number of times, more excellent RV subsets are selected according to comparative result, and the rest may be inferred, select optimal RV subsets.
Assuming that redundancy version sequence is divided into following 6 subsets：RV subsets 0={ 0,2,3,1 } RV subsets 1=0,2,1,
3 } RV subsets 2={ 0,1,2,3 } RV subsets 3={ 0,3,1,2 } RV subsets 4={ 0,3,1,2 } RV subsets 5={ 0,3,2,1 }, judge silent
Recognize whether subset is RV subsets 0, RV subsets 0 are default subset if judging, compare RV subsets 0 and RV subsets 1 packet loss and
Average repeat time, more excellent RV subsets are selected according to comparative result, if more excellent RV subsets are RV subsets 1, compare the He of RV subsets 1
The packet loss and average repeat time of RV subsets 2, if more excellent RV subsets are RV subsets 2, compare RV subsets 2 and RV subsets 3
Packet loss and average repeat time, select more excellent RV subsets RV subsets 2 or RV subsets 3, the like, compare to RV subsets 5, two
Two compare and select optimal RV subsets, and such as optimal RV subsets are RV subsets 3, then be set to RV subsets 3 give tacit consent to RV subsets.
Referring to Fig. 3, Fig. 3 be mixed automatic retransfer redundancy versions adaptive selection method of the present invention in select optimal RV subsets
The schematic flow sheet of another embodiment.
Based on above-described embodiment, step S50 also includes：
Step S54, if judging, default subset is not the RV subsets of the first cis-position, judge the acquiescence RV subsets whether be
By last RV subset that preset order is arranged；
Step S55, if judging to give tacit consent to whether RV subsets are last the RV subset arranged by preset order, compares institute
State acquiescence RV subsets and the RV subsets of first cis-position packet loss and average repeat time, according to comparative result select compared with
Excellent RV subsets；
Carry out step S53 i.e. after step S55, according to preset order compare more excellent RV subsets and with next RV
The packet loss and average repeat time of collection, more excellent RV subsets are selected according to comparative result, and the rest may be inferred, selects optimal RV
Collection.
Assuming that redundancy version sequence is divided into following 6 subsets：RV subsets 0={ 0,2,3,1 } RV subsets 1=0,2,1,
3 } RV subsets 2={ 0,1,2,3 } RV subsets 3={ 0,3,1,2 } RV subsets 4={ 0,3,1,2 } RV subsets 5={ 0,3,2,1 }, if judging
It is not RV subsets 0 to give tacit consent to sub- RV collection, then continue to judge whether RV default subsets are RV subsets 5, if judging, RV default subsets are RV
Subset 5, then compare the packet loss and average repeat time of RV subsets 5 and RV subsets 0, selects more excellent RV subsets, if more excellent RV
It is RV subsets 5 to integrate, then compare the packet loss and average repeat time of RV subsets 5 and RV subsets 1, if more excellent RV subsets are RV subsets
1, then compare the packet loss and average repeat time of RV subsets 1 and RV subsets 2, if more excellent RV subsets are RV subsets 2, compare
The packet loss and average repeat time of RV subsets 2 and RV subsets 3, select more excellent RV subsets RV subsets 2 or RV subsets 3, successively class
Push away, compare to RV subsets 4, compare select optimal RV subsets two-by-two, when such as optimal RV subsets are RV subsets 3, then by RV subsets 3
It is set to give tacit consent to RV subsets.
Reference picture 4, Fig. 4 be mixed automatic retransfer redundancy versions adaptive selection method of the present invention in select optimal RV subsets
The schematic flow sheet of another embodiment.
Based on above-described embodiment, step S50 also includes：
Step S56, if judging, acquiescence RV subsets are not the RV subsets of last arranged by preset order, according to pre-
If order compares the packet loss and average repeat time of acquiescence RV subsets RV subsets adjacent thereto, selected according to comparative result
More excellent RV subsets；
Step S57, retransmits according to the packet loss peace that preset order compares more excellent RV subsets and next RV subsets
Number of times, more excellent RV subsets are selected according to comparative result, and the rest may be inferred, select preferred RV subsets；
The packet loss and average repeat time of step S58, relatively more described preferred RV subsets and the first cis-position RV subsets, according to
Comparative result selects more excellent RV subsets；
Step S53 is carried out after step S58, i.e., basis compares more excellent RV subsets with preset order with next RV subsets
Packet loss and average repeat time, more excellent RV subsets are selected according to comparative result, the rest may be inferred, selects optimal RV
Collection.
Assuming that redundancy version sequence is divided into following 6 subsets：RV subsets 0={ 0,2,3,1 } RV subsets 1=0,2,1,
3 } RV subsets 2={ 0,1,2,3 } RV subsets 3={ 0,3,1,2 } RV subsets 4={ 0,3,1,2 } RV subsets 5={ 0,3,2,1 }, if judging
It is not RV subsets 0 to give tacit consent to sub- RV collection, then continue to judge whether RV default subsets are RV subsets 5, if judging, RV default subsets are not
RV subsets 5, it is assumed that acquiescence RV subsets are RV subsets 3, then compare the packet loss and average repeat time of RV subsets 3 and RV subsets 4,
More excellent RV subsets are compared, if more excellent RV subsets are RV subsets 3, compares the packet loss peace counterpoise of RV subsets 3 and RV subsets 5
Number of times is passed, preferred RV subsets 5 are drawn, then compares the packet loss and average repeat time of RV subsets 5 and RV subsets 0, compared
More excellent RV subsets 0, then compare the packet loss and average repeat time of RV subsets 0 and RV subsets 1, compare more excellent RV subsets 1,
Then compare the packet loss and average repeat time of RV subsets 1 and RV subsets 2, compare more excellent RV subsets 1 or RV subsets 2, according to
This analogizes, and is compared two-by-two, until comparing to RV subsets 2, selects optimal RV subsets.
Reference picture 5, Fig. 5 be mixed automatic retransfer redundancy versions adaptive selection method of the present invention in compare two RV subsets
Packet loss and average repeat time schematic flow sheet.
In the above-described embodiments, when the packet loss and average repeat time of two RV subsets is compared, comprise the following steps：
Step S1, judges whether two packet loss of RV subsets are identical；
Step S2, if judging, two packet loss of RV subsets are different, and the low RV subsets of selection packet loss are more excellent RV
Collection；
Step S3, if judging, the packet loss of two RV subsets is identical, judges the average repeat time of two RV subsets and is
It is no identical；
Step S4, if judging, two average biography number of times of RV subsets are different, the low RV subsets of selection average repeat time
It is more excellent RV subsets；
Step S5, if judging, the average repeat time of two RV subsets is identical, forward according to preset order selecting sequence
RV subsets be more excellent RV subsets.
Because packet loss is relevant with the reliability that wireless communication system is transmitted, thus compare two RV subsets packet loss and
During average repeat time, first compare two packet loss of RV subsets, then compare average repeat time, and average repeat time be
The utilization rate of frequency resource of uniting is relevant.
In the above-described embodiments, the step of obtaining packet loss and average repeat time of the RV subsets in Preset Time is wrapped
Include：
A, when HARQ scheduling is carried out, for a HARQ process, if receiving the successful feedback information of data is activation, note
The current HARQ transmission number of times of record, if the feedback information of data is activation failure is received, and the number of transmissions is equal to threshold value, then be designated as
Packet loss；
B, calculates the packet loss and average repeat time of multiple HARQ processes in Preset Time.
When HARQ scheduling is carried out, there are multiple HARQ processes, each HARQ process is possible to packet loss and is also possible to not packet loss,
The number of retransmissions of each HARQ process is recorded, the number of retransmissions number of times of multiple processes is carried out averagely can then to calculate RV subsets
Average repeat time, the number of the HARQ processes of packet loss is in the sum of HARQ processes, you can obtain packet loss.
Reference picture 6, Fig. 6 is the structure of the adaptively selected device preferred embodiment of mixed automatic retransfer redundancy versions of the present invention
Schematic diagram.
The adaptively selected device of mixed automatic retransfer redundancy versions that the present embodiment is proposed includes：
Processing module 10, for receive HARQ merge instruction, and select acquiescence RV subsets HARQ is carried out in Preset Time
Scheduling, and select the remaining RV subsets HARQ scheduling is carried out in Preset Time successively；
Multiple different RV subsets, i.e. RV subsets 0, RV subsets 1, RV subsets will be divided into for merging the RV sequences of HARQ
2 ... ..., RV subset N, instruction is merged when HARQ is received, and selection acquiescence RV subsets carry out HARQ scheduling in Preset Time, write from memory
It can be that RV subsets 0 can also be other RV subsets to recognize RV subsets.The order of the RV values in each RV subset is different, and RV values are smaller
Represent that the check bit sent in data is fewer, systematic bits are more, RV values are bigger to represent the check bit sent in data more
Many, systematic bits are fewer.
When the average repeat time for giving tacit consent to RV subsets is more than threshold values, other remaining RV subsets can be successively selected to carry out
HARQ is dispatched, and such as step S20 methods describeds obtain the packet loss and average repeat time of each RV subset successively.
Acquisition module 20, for obtaining packet loss peace re-transmission time of the RV subsets of the acquiescence in Preset Time
Number, and obtain packet loss and average repeat time of the remaining RV subsets in Preset Time；
Selection acquiescence RV subsets carry out HARQ scheduling in Preset Time, when HARQ scheduling is carried out, for a HARQ
Process, if receiving data is activation success feedback information, shows that data are correctly decoded reception by terminal, records current
HARQ transmission number of times；If data is activation failure feedback information is received, and the number of transmissions is equal to threshold value, then be designated as a packet loss,
The packet loss and average repeat time of acquiescence RV subsets multiple HARQ processes in Preset Time can be calculated.
Judge module 30, for judging whether the average repeat time for giving tacit consent to RV subsets is more than threshold value；
Obtain in the Preset Time after the packet loss and average repeat time of acquiescence RV subsets, judge the average of RV subsets
Number of retransmissions whether be more than threshold value, illustrate that the RV subsets are not suitable for present channel if threshold value is greater than, can using other compared with
Excellent RV subsets carry out HARQ scheduling.
Comparison module 40, packet loss and average repeat time for comparing all RV subsets successively, according to comparative result
Select optimal RV subsets；
In the packet loss and average repeat time of more all RV subsets, can successively be compared according to preset order, also may be used
Other comparative sequences are designed, RV subsets are compared two-by-two, two packet loss of RV subsets are first compared when relatively, if packet loss
Rate is identical, compares the two RV average repeat times of oneself.
Setup module 50, is acquiescence RV subsets for setting optimal RV subsets.
Optimal RV subsets, i.e. packet loss and average re-transmission are can select after the complete all RV subsets of comparison module 40
The subset of least number of times, it is acquiescence RV subsets that setup module 50 sets optimal RV subsets, carries out this HARQ merging, is being received
During the order that next HARQ merges, the RV subsets are acquiescence RV subsets, and judge module 30 judges the RV subsets in Preset Time
Average repeat time whether be more than threshold values, if so, then reselecting optimal RV subsets.
The mixing automatic retransmission device of information proposed by the invention, sets multiple RV subsets, when HARQ merging is carried out,
Compare the average repeat time and packet loss of each RV subset, select the RV subsets for being best suitable for transmission channel, on the one hand reduce
The packet loss of wireless communication system, increased the reliability of system transfers, on the other hand reduce the flat of wireless communication system
Equal number of retransmissions, improves the utilization rate of system frequency resource.
Reference picture 7, Fig. 7 is the structure of comparison module in the adaptively selected device of mixed automatic retransfer redundancy versions of the present invention
Schematic diagram.
Based on above-described embodiment, comparison module 40 includes：
Judging submodule 41, for judge to give tacit consent to RV subsets whether be the first cis-position arranged by preset order RV
Collection；
Comparison sub-module 42, compares the RV subsets of acquiescence RV subsets and the first cis-position, selects more excellent according to comparative result
RV subsets；And according to preset order compare more excellent RV subsets and with next RV subsets, according to comparative result select compared with
Excellent RV subsets, the like, select optimal RV subsets.
Assuming that redundancy version sequence is divided into following 6 subsets：RV subsets 0={ 0,2,3,1 } RV subsets 1=0,2,1,
3 } RV subsets 2={ 0,1,2,3 } RV subsets 3={ 0,3,1,2 } RV subsets 4={ 0,3,1,2 } RV subsets 5={ 0,3,2,1 }, judge son
Module 41 judges whether default subset is RV subsets 0, if judging submodule 41 judges that RV subsets 0 are default subset, compares RV
Subset 0 and the packet loss and average repeat time of RV subsets 1, select more excellent RV subsets, if more excellent RV subsets according to comparative result
It is RV subsets 1, comparison sub-module 42 then compares the packet loss and average repeat time of RV subsets 1 and RV subsets 2, if more excellent RV
It is RV subsets 2 to integrate, and comparison sub-module 42 then compares the packet loss and average repeat time of RV subsets 2 and RV subsets 3, selects more excellent
RV subset RV subsets 2 or RV subsets 3, the like, compare to RV subsets 5, compare select optimal RV subsets two-by-two, it is such as optimal
RV subsets are RV subsets 3, then be set to for RV subsets 3 to give tacit consent to RV subsets by setup module 50.
Based on above-described embodiment, judging submodule 41 is additionally operable to judge to give tacit consent to whether RV subsets are to be arranged by preset order
Last RV subset；Comparison sub-module 42 is additionally operable to compare the RV subsets of acquiescence RV subsets and the first cis-position, according to comparing knot
Fruit selects more excellent RV subsets.
Assuming that redundancy version sequence is divided into following 6 subsets：RV subsets 0={ 0,2,3,1 } RV subsets 1=0,2,1,
3 } RV subsets 2={ 0,1,2,3 } RV subsets 3={ 0,3,1,2 } RV subsets 4={ 0,3,1,2 } RV subsets 5={ 0,3,2,1 }, if judging
Submodule 41 judges that the sub- RV collection of acquiescence is not RV subsets 0, then continue to judge whether RV default subsets are RV subsets 5, if judging RV
Default subset is RV subsets 5, and comparison sub-module 42 then compares the packet loss and average repeat time of RV subsets 5 and RV subsets 0, is selected
Go out more excellent RV subsets, if more excellent RV subsets are RV subsets 5, compare the packet loss peace re-transmission time of RV subsets 5 and RV subsets 1
Number, if more excellent RV subsets are RV subsets 1, compares the packet loss and average repeat time of RV subsets 1 and RV subsets 2, if compared with
Excellent RV subsets are RV subsets 2, and comparison sub-module 42 then compares the packet loss and average repeat time of RV subsets 2 and RV subsets 3, are selected
Go out more excellent RV subsets RV subsets 2 or RV subsets 3, the like, compare to RV subsets 4, compare select optimal RV subsets two-by-two,
If optimal RV subsets are RV subsets 3, then RV subsets 3 are set to give tacit consent to RV subsets.
Based on above-described embodiment, comparison sub-module 41 is additionally operable to compare more excellent RV subsets and next according to preset order
Subset, more excellent RV subsets are selected according to comparative result, and the rest may be inferred, select preferred RV subsets；And ratio more preferably RV
Collection and the first cis-position RV subsets, more excellent RV subsets are selected according to comparative result.
Assuming that redundancy version sequence is divided into following 6 subsets：RV subsets 0={ 0,2,3,1 } RV subsets 1=0,2,1,
3 } RV subsets 2={ 0,1,2,3 } RV subsets 3={ 0,3,1,2 } RV subsets 4={ 0,3,1,2 } RV subsets 5={ 0,3,2,1 }, if judging
It is not RV subsets 0 to give tacit consent to sub- RV collection, then continue to judge whether RV default subsets are RV subsets 5, if judging, RV default subsets are not
RV subsets 5, it is assumed that acquiescence RV subsets are RV subsets 3, then compare the packet loss and average repeat time of RV subsets 3 and RV subsets 4,
More excellent RV subsets are compared, if more excellent RV subsets are RV subsets 3, compares the packet loss peace counterpoise of RV subsets 3 and RV subsets 5
Number of times is passed, preferred RV subsets 5 are drawn, then compares the packet loss and average repeat time of RV subsets 5 and RV subsets 0, compared
More excellent RV subsets 0, then compare the packet loss and average repeat time of RV subsets 0 and RV subsets 1, compare more excellent RV subsets 1,
Then compare the packet loss and average repeat time of RV subsets 1 and RV subsets 2, compare more excellent RV subsets 1 or RV subsets 2, according to
This analogizes, and is compared two-by-two, until comparing to RV subsets 2, selects optimal RV subsets.
Reference picture 8, Fig. 8 is the ratio in the comparison module of the adaptively selected device of mixed automatic retransfer redundancy versions of the present invention
Compared with the structural representation of submodule.
Based on above-described embodiment, comparison sub-module 42 includes：
Whether the first judging unit 421 is identical for judging two packet loss of RV subsets；
Whether the second judging unit 422 is identical for judging two average repeat times of RV subsets；
Select unit 423, the RV subsets for selecting packet loss low are more excellent RV subsets, and selection average repeat time is low
RV subsets are more excellent RV subsets, and are more excellent RV subsets according to the forward RV subsets of preset order selecting sequence.
Because packet loss is relevant with the reliability that wireless communication system is transmitted, thus compare two RV subsets packet loss and
During average repeat time, first compare two packet loss of RV subsets, then compare average repeat time, and average repeat time be
The utilization rate of frequency resource of uniting is relevant.
When two RV subsets are compared, if the first judging unit 421 judges that two packet loss of RV subsets are different, select
The low RV subsets of packet loss are more excellent RV subsets；If the first judging unit 421 judges that the packet loss of two RV subsets is identical, the
Two judging units 422 judge whether two average repeat times of RV subsets are identical, if the second judging unit 422 judges described two
The average biography number of times of individual RV subsets is different, then the low RV subsets of the selection of select unit 423 average repeat time are more excellent RV subsets；
If the second judging unit 422 judges that the average repeat time of two RV subsets is identical, select unit 423 is selected according to preset order
The RV subsets for selecting front are more excellent RV subsets.
Reference picture 9, Fig. 9 Fig. 9 is acquisition module in the adaptively selected device of mixed automatic retransfer redundancy versions of the present invention
Structural representation.
Based on above-described embodiment, acquisition module 20 includes：
Receiving unit 21, the feedback information for receiving data is activation success or failure；
Recording unit 22, number of retransmissions and packet loss information for recording each HARQ process；
Computing unit 23, packet loss and average repeat time for calculating RV subsets.
When HARQ scheduling is carried out, for a HARQ process, if receiving unit 21 receives several data is activations failures
Feedback information, and the number of transmissions is equal to threshold value, then recording unit 22 is designated as a packet loss；Computing unit 23 is calculated in Preset Time
The packet loss and average repeat time of multiple HARQ processes.
When HARQ scheduling is carried out, there are multiple HARQ processes, each HARQ process is possible to packet loss and is also possible to not packet loss,
Recording unit 22 records the number of retransmissions of each HARQ process, and computing unit 23 is put down the number of retransmissions number of times of multiple processes
The average repeat time of RV subsets can be then calculated, computing unit 23 removes in HARQ processes the number of the HARQ processes of packet loss
Sum, you can obtain packet loss.
The preferred embodiments of the present invention are the foregoing is only, the scope of the claims of the invention, every utilization is not thereby limited
The equivalent structure transformation that description of the invention and accompanying drawing content are made, or directly or indirectly it is used in other related technology necks
Domain, is included within the scope of the present invention.
Claims (10)
1. a kind of mixed automatic retransfer redundancy versions adaptive selection method, it is characterised in that including：
Receive HARQ and merge instruction, selection acquiescence RV subsets carry out HARQ scheduling in Preset Time, obtain acquiescence RV
Collect packet loss and average repeat time in the Preset Time；
Whether the average repeat time of the acquiescence RV subsets is judged more than threshold value, if so, then selecting remaining RV successively
Collection carries out HARQ scheduling in Preset Time, obtains packet loss of the remaining RV subsets in the Preset Time and average
Number of retransmissions；
Compare the packet loss and average repeat time of all RV subsets successively, optimal RV subsets are selected according to comparative result, set
The optimal RV subsets are acquiescence RV subsets；
The packet loss and average repeat time for comparing all RV subsets successively, optimal RV subsets are selected according to comparative result
The step of include：
Judge the acquiescence RV subsets whether be by preset order arrange the first cis-position RV subsets；
If so, the packet loss peace re-transmission time according to preset order acquiescence RV subsets RV subsets adjacent thereto
Number, more excellent RV subsets are selected according to comparative result；
Compare the packet loss and average repeat time of more excellent RV subsets and next RV subsets according to preset order, according to comparing
Result selects more excellent RV subsets, and the rest may be inferred, selects optimal RV subsets.
2. method according to claim 1, it is characterised in that described to judge whether the acquiescence RV subsets are the first cis-position
RV subsets the step of after also include：
If judging, the default subset is not the RV subsets of the first cis-position, judges whether the acquiescence RV subsets are by default suitable
Last RV subset of sequence arrangement；
If so, then comparing the packet loss and average repeat time of the acquiescence RV subsets and the RV subsets of first cis-position, root
More excellent RV subsets are selected according to comparative result；
More excellent RV subsets and packet loss and average repeat time with next RV subsets are compared according to preset order, according to than
Relatively result selects more excellent RV subsets, and the rest may be inferred, selects optimal RV subsets.
3. method according to claim 2, it is characterised in that described to judge whether the acquiescence RV subsets are by default suitable
Also include after the step of RV subsets of last of sequence arrangement：
If judging, the acquiescence RV subsets are not the RV subsets of last arranged by preset order, according to preset order ratio
The packet loss and average repeat time of acquiescence RV subsets RV subsets adjacent thereto, select more excellent according to comparative result
RV subsets；
Compare the packet loss and average repeat time of more excellent RV subsets and next RV subsets according to preset order, according to comparing
Result selects more excellent RV subsets, and the rest may be inferred, selects preferred RV subsets；
Compare the packet loss and average repeat time of the preferred RV subsets and the first cis-position RV subsets, selected according to comparative result
Go out more excellent RV subsets；
According to the packet loss and average repeat time that compare more excellent RV subsets and next RV subsets with preset order, according to comparing
Result selects more excellent RV subsets, and the rest may be inferred, selects optimal RV subsets.
4. the method according to any one of claims 1 to 3, it is characterised in that described to compare two packet loss of RV subsets
And the step of average repeat time includes：
Judge whether two packet loss of RV subsets are identical, if it is not, then the low RV subsets of selection packet loss are more excellent RV subsets；
If so, then judge whether the average repeat time of described two RV subsets is identical, if judging the flat of described two RV subsets
Pass number of times different, then it is more excellent RV subsets to select the low RV subsets of average repeat time；
If judging, the average repeat time of described two RV subsets is identical, according to the forward RV subsets of preset order selecting sequence
It is more excellent RV subsets.
5. method according to claim 4, it is characterised in that packet loss of the acquisition RV subsets in Preset Time and
The step of average repeat time, includes：
When HARQ scheduling is carried out, for a HARQ process, if receiving the successful feedback information of data is activation, record is current
HARQ transmission number of times；If the feedback information of data is activation failure is received, and data transmission times are equal to threshold value, then be designated as one
Secondary packet loss；
Calculate the packet loss and average repeat time of multiple HARQ processes in Preset Time.
6. a kind of adaptively selected device of mixed automatic retransfer redundancy versions, it is characterised in that including：
Processing module, for receive HARQ merge instruction, and select acquiescence RV subsets HARQ scheduling is carried out in Preset Time, with
And select the remaining RV subsets HARQ scheduling is carried out in Preset Time successively；
Acquisition module, for obtaining packet loss and average repeat time of the RV subsets of the acquiescence in the Preset Time,
And obtain packet loss and average repeat time of the remaining RV subsets in the Preset Time；
Judge module, for judging the average repeat time of the acquiescence RV subsets whether more than threshold value；
Comparison module, packet loss and average repeat time for comparing all RV subsets successively, according to comparative result selection most
Excellent RV subsets；
Setup module, is acquiescence RV subsets for setting the optimal RV subsets；
The comparison module includes：
Judging submodule, for judge the acquiescence RV subsets whether be by preset order arrange the first cis-position RV subsets；
Comparison sub-module, the RV subsets for comparing the acquiescence RV subsets and first cis-position are selected according to comparative result
Go out more excellent RV subsets；And according to preset order compare more excellent RV subsets and with next RV subsets, according to comparative result select
More excellent RV subsets are selected out, the like, select optimal RV subsets.
7. device according to claim 6, it is characterised in that the judging submodule is additionally operable to judge acquiescence RV
Whether collection is last the RV subset arranged by preset order；The comparison sub-module, if being additionally operable to judge the acquiescence RV
Subset is last the RV subset arranged by preset order, then RV of the acquiescence RV subsets and first cis-position
Collection, more excellent RV subsets are selected according to comparative result.
8. device according to claim 7, it is characterised in that the comparison sub-module is additionally operable to be compared according to preset order
More excellent RV subsets and next subset, more excellent RV subsets are selected according to comparative result, and the rest may be inferred, selects preferred RV
Collection；And relatively more described preferred RV subsets and the first cis-position RV subsets, more excellent RV subsets are selected according to comparative result.
9. device according to claim 8, it is characterised in that the comparison sub-module includes：
Whether the first judging unit is identical for judging two packet loss of RV subsets；
Whether the second judging unit is identical for judging two average repeat times of RV subsets；
Select unit, the RV subsets for selecting packet loss low are more excellent RV subsets, the low RV subsets of selection average repeat time
It is more excellent RV subsets, and is more excellent RV subsets according to the forward RV subsets of preset order selecting sequence.
10. device according to claim 9, it is characterised in that the acquisition module includes：
Receiving unit, the feedback information for receiving data is activation success or failure in HARQ processes；
Recording unit, number of retransmissions and packet loss information for recording each HARQ process
Computing unit, packet loss and average repeat time for calculating RV subsets.
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| CN101523794A (en) * | 2006-10-11 | 2009-09-02 | 艾利森电话股份有限公司 | Method and apparatus for optimal redundancy version (RV) selection for UMTS HSDPA transmissions |
| CN101682470A (en) * | 2007-06-18 | 2010-03-24 | 诺基亚西门子通信公司 | Method for dynamic interpretation of transport block size |
| CN101843025A (en) * | 2007-10-29 | 2010-09-22 | Lg电子株式会社 | Method of data transmission using HARQ |
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| CN101523794A (en) * | 2006-10-11 | 2009-09-02 | 艾利森电话股份有限公司 | Method and apparatus for optimal redundancy version (RV) selection for UMTS HSDPA transmissions |
| CN101682470A (en) * | 2007-06-18 | 2010-03-24 | 诺基亚西门子通信公司 | Method for dynamic interpretation of transport block size |
| CN101843025A (en) * | 2007-10-29 | 2010-09-22 | Lg电子株式会社 | Method of data transmission using HARQ |
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