CN107294661A - Method of adjustment, device and the base station of hybrid automatic repeat-request maximum retransmission - Google Patents
Method of adjustment, device and the base station of hybrid automatic repeat-request maximum retransmission Download PDFInfo
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- CN107294661A CN107294661A CN201610190578.7A CN201610190578A CN107294661A CN 107294661 A CN107294661 A CN 107294661A CN 201610190578 A CN201610190578 A CN 201610190578A CN 107294661 A CN107294661 A CN 107294661A
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1825—Adaptation of specific ARQ protocol parameters according to transmission conditions
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
- H04L41/0813—Configuration setting characterised by the conditions triggering a change of settings
-
- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L41/00—Arrangements for maintenance, administration or management of data switching networks, e.g. of packet switching networks
- H04L41/08—Configuration management of networks or network elements
- H04L41/0803—Configuration setting
- H04L41/0813—Configuration setting characterised by the conditions triggering a change of settings
- H04L41/0816—Configuration setting characterised by the conditions triggering a change of settings the condition being an adaptation, e.g. in response to network events
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- Computer Networks & Wireless Communication (AREA)
- Signal Processing (AREA)
- Mobile Radio Communication Systems (AREA)
- Detection And Prevention Of Errors In Transmission (AREA)
Abstract
The present invention provides a kind of method of adjustment, device and the base station of hybrid automatic repeat-request maximum retransmission, solves different user and uses the problem of the transmission of identical HARQ maximum retransmissions is easily caused packet loss, scheduling times redundancy, resource utilization is low.The method of the present invention includes：Obtain under current hybrid automatic repeat-request HARQ maximum retransmissions, the HARQ transmission statistical information of user radio transmission channel, HARQ transmission statistical information includes：The HARQ number of retransmissions used when the quantity and each packet transmission success of the packet of user radio transmission channel failure；According to HARQ transmission statistical information, HARQ maximum retransmissions are updated.The present invention adjusts HARQ maximum retransmissions according to the HARQ number of retransmissions that the uses when quantity and each packet transmission success of the packet of user radio transmission channel failure, on the premise of data packetloss rate is reduced, improves resource utilization.
Description
Technical field
The present invention relates to the technical field of communications applications, a kind of hybrid automatic repeat-request maximum weight is particularly related to
Pass method of adjustment, device and the base station of number of times.
Background technology
Hybrid automatic repeat-request (Hybrid Automatic Repeat Request, HARQ) is autonomous retransmission
(Automatic Repeat Request, ARQ) and forward error correction coding (Forward Error Correction,
FEC a kind of error-control technique) being used in combination.The purpose is to what is 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.
System is used after HARQ, and transmitting terminal needs receiving terminal to feed back a confirmation to indicate what is sent
Whether packet is correctly received by recipient.If it is confirmed that information is that affirmative acknowledgement ACK is (up to be designated as
CRC (CRC, Cyclic Redundancy Check) OK, hereafter referred to collectively as ACK),
Represent that packet is properly received by recipient；If it is confirmed that message is negative response NACK (up fingers
It is shown as CRC ERR, hereafter referred to collectively as NACK), represent that packet is not properly received by recipient, need
Sender is wanted to carry out necessary retransmit to the packet；If it is confirmed that message is NACK, and the HARQ enters
Journey the number of transmissions has reached the maximum of default, then the packet sends failure.
In Long Term Evolution (Long Term Evolution, LTE) system, in order to obtain more preferable HARQ
Merge gain, for same HARQ processes, transmit and retransmit respectively using different redundancy versions first,
To realize the progressively accumulation of redundant bit, incremental redundancy HARQ operation is completed, it is seen that HARQ number of retransmissions
It is more many more be possible to obtain bigger merging gain.When multiple access in LTE system and HARQ is used,
Because the radio channel state between different user and base station is different, if all being used for all users
Identical HARQ maximum retransmissions be transmitted it is clearly irrational, be easily caused packet loss, scheduling time
Number redundancy, the low problem of resource utilization.
The content of the invention
To solve the problem of prior art is present, the embodiment of the present invention provides a kind of hybrid automatic repeat-request most
Method of adjustment, device and the base station of big number of retransmissions, identical HARQ is used most to solve different user
When big number of retransmissions carries out data transmission, packet loss, scheduling times redundancy, resource utilization are easily caused low
Problem.
To achieve these goals, retransmitted the embodiments of the invention provide a kind of hybrid automatic repeat-request maximum
The method of adjustment of number of times, including：
Obtain under current hybrid automatic repeat-request HARQ maximum retransmissions, user radio transmission letter
The HARQ transmission statistical information in road, the HARQ transmission statistical information includes：The user radio transmission
Used HARQ retransmits secondary when the quantity and each packet transmission success of the packet of transmission failure
Number；
According to the HARQ transmission statistical information, the HARQ maximum retransmissions are updated.
Wherein, it is described according to the HARQ transmission statistical information, update the HARQ maximum retransmissions
The step of include：
According to the quantity and biography of the packet of the user radio transmission channel failure in first scheduled time
The ratio of the total quantity of transmission of data bag, draws the packet loss of the user radio transmission channel；
According to the packet in first scheduled time by the HARQ maximum retransmissions transmission success
Quantity, the ratio with the total quantity of transmission packet show that the user radio transmission channel is used described
Transmission success rate during HARQ maximum retransmissions；
According to the packet loss and the transmission success rate, the HARQ maximum retransmissions are updated.
Wherein, it is described according to the packet loss and the transmission success rate, update the HARQ maximums and retransmit
The step of number of times, includes：
If the packet loss is more than the first predetermined threshold value, the HARQ maximum retransmissions are improved, by institute
State HARQ maximum retransmissions and second value is updated to by the first current numerical value；
If the packet loss is less than or equal to first predetermined threshold value, and the transmission success rate is less than the
Two predetermined threshold values, then reduce the HARQ maximum retransmissions, by the HARQ maximum retransmissions by
The first current numerical value is updated to third value.
Wherein, it is described according to the packet loss and the transmission success rate, update the HARQ maximums and retransmit
The step of number of times, also includes：
If the packet loss be less than or equal to first predetermined threshold value, and the transmission success rate be more than or
Person is equal to second predetermined threshold value, then keeps the HARQ maximum retransmissions constant.
Wherein, if the packet loss is less than or equal to first predetermined threshold value, and described transmit into
Power is less than the second predetermined threshold value, then reduces the HARQ maximum retransmissions, and the HARQ is maximum
After the step of number of retransmissions is updated to third value by the first current numerical value, the method for adjustment also includes：
Under current HARQ maximum retransmissions, the user radio transmission channel is obtained predetermined second
The packet loss in time；
If packet loss of the user radio transmission channel within second scheduled time is more than the described first default threshold
Value, then revert to first numerical value by current HARQ maximum retransmissions by the third value.
Wherein, if the packet loss is more than the first predetermined threshold value, the HARQ maximums is improved and are retransmitted
Number of times, the step of HARQ maximum retransmissions are updated to second value by the first current numerical value it
Afterwards, the method for adjustment also includes：
Under current HARQ maximum retransmissions, the user radio transmission channel is obtained predetermined second
The transmission success rate and packet loss in time；
If packet loss of the user radio transmission channel within second scheduled time is less than or equal to institute
The first predetermined threshold value is stated, and the transmission success rate is less than second predetermined threshold value, then by current HARQ
Maximum retransmission reverts to first numerical value by the second value.
Embodiments of the invention additionally provide a kind of adjusting apparatus of hybrid automatic repeat-request maximum retransmission,
Including：
First acquisition module, for obtaining in current hybrid automatic repeat-request HARQ maximum retransmissions
Under, the HARQ transmission statistical information of user radio transmission channel, the HARQ transmission statistical information includes：
Made when the quantity and each packet transmission success of the packet of the user radio transmission channel failure
HARQ number of retransmissions；
Update module, is retransmitted for according to the HARQ transmission statistical information, updating the HARQ maximums
Number of times.
Wherein, the update module includes：
First acquisition submodule, for being lost according to the user radio transmission channel in first scheduled time
The ratio of the quantity of the packet lost and the total quantity of transmission packet, draws the user radio transmission channel
Packet loss；
Second acquisition submodule, for the HARQ is maximum to be retransmitted according to passing through in first scheduled time
The quantity of the packet of number of times transmission success, the ratio with the total quantity of transmission packet draws the user
Wireless transmission channel uses the transmission success rate during HARQ maximum retransmissions；
Submodule is updated, for according to the packet loss and the transmission success rate, updating the HARQ most
Big number of retransmissions.
Wherein, the renewal submodule includes：
First updating block, if being more than the first predetermined threshold value for the packet loss, improves the HARQ
Maximum retransmission, second value is updated to by the HARQ maximum retransmissions by the first current numerical value；
Second updating block, if being less than or equal to first predetermined threshold value, and institute for the packet loss
Transmission success rate is stated less than the second predetermined threshold value, then reduces the HARQ maximum retransmissions, will be described
HARQ maximum retransmissions are updated to third value by the first current numerical value.
Wherein, the renewal submodule also includes：
3rd updating block, if being less than or equal to first predetermined threshold value, and institute for the packet loss
Transmission success rate is stated more than or equal to second predetermined threshold value, then keeps the HARQ maximums to retransmit secondary
Number is constant.
Wherein, the adjusting apparatus of above-mentioned hybrid automatic repeat-request maximum retransmission, in addition to：
Second acquisition module, under current HARQ maximum retransmissions, obtaining the user radio
The packet loss of the transmission channel within second scheduled time；
First recovery module, if the packet loss for the user radio transmission channel within second scheduled time
More than first predetermined threshold value, then current HARQ maximum retransmissions are recovered by the third value
For first numerical value.
Wherein, the adjusting apparatus of above-mentioned hybrid automatic repeat-request maximum retransmission, in addition to：
3rd acquisition module, under current HARQ maximum retransmissions, obtaining the user radio
The transmission success rate and packet loss of the transmission channel within second scheduled time；
Second recovery module, if the losing within second scheduled time for the user radio transmission channel
Bag rate is less than or equal to first predetermined threshold value, and the transmission success rate is less than the described second default threshold
Value, then revert to first numerical value by current HARQ maximum retransmissions by the second value.
Present invention also offers a kind of base station, including hybrid automatic repeat-request as described above maximum re-transmission time
Several adjusting apparatus.
The embodiment of the present invention has the advantages that：
The such scheme of the embodiment of the present invention, is obtained in current hybrid automatic repeat-request HARQ maximum weights
Pass under number of times, the HARQ transmission statistical information of user radio transmission channel, the HARQ transmission statistics letter
Breath includes：The quantity and each packet of the packet of the user radio transmission channel failure are transmitted into
Used HARQ number of retransmissions during work(；According to the HARQ transmission statistical information, the HARQ is updated
Maximum retransmission.According to the number of the packet of user radio transmission channel failure in the embodiment of the present invention
Used HARQ number of retransmissions is maximum come the HARQ for adjusting user when amount and each packet transmission success
Number of retransmissions, on the premise of data packetloss rate is reduced, reduces scheduling of resource number of times, and then improve money
Source utilization rate.
Brief description of the drawings
Fig. 1 is the first of the method for adjustment of the hybrid automatic repeat-request maximum retransmission of the embodiment of the present invention
Workflow diagram；
Fig. 2 is the second of the method for adjustment of the hybrid automatic repeat-request maximum retransmission of the embodiment of the present invention
Workflow diagram；
Fig. 3 be the embodiment of the present invention in timer module workflow diagram；
Fig. 4 be the embodiment of the present invention in HARQ information collection modules workflow diagram；
Fig. 5 be the embodiment of the present invention in HARQ number of retransmissions judging modules workflow diagram；
Fig. 6 is the structure of the adjusting apparatus of the hybrid automatic repeat-request maximum retransmission of the embodiment of the present invention
Block diagram.
Embodiment
To make the technical problem to be solved in the present invention, technical scheme and advantage clearer, below in conjunction with tool
Body embodiment and accompanying drawing are described in detail.
The embodiment provides a kind of method of adjustment of hybrid automatic repeat-request maximum retransmission,
Device and base station, when solving different user and being carried out data transmission using identical HARQ maximum retransmissions,
It is easily caused packet loss, scheduling times redundancy, the problem of resource utilization is low.
First embodiment：
As shown in figure 1, the method for adjustment of the hybrid automatic repeat-request maximum retransmission of the embodiment of the present invention,
Including：
Step 11：Obtain under current hybrid automatic repeat-request HARQ maximum retransmissions, Yong Huwu
The HARQ transmission statistical information of line transmission channel, the HARQ transmission statistical information includes：The user
It is used when the quantity of the packet of wireless transmission channel bust this and each packet transmission success
HARQ number of retransmissions.
In a particular embodiment of the present invention, transmitting terminal needs receiving terminal to feed back a confirmation to indicate hair
Whether the packet sent is correctly received by recipient.If it is confirmed that information is affirmative acknowledgement ACK, number is represented
It is properly received according to bag by recipient；If it is confirmed that message is negative response NACK, represent that packet does not have
Have and be properly received by recipient, it is necessary to which sender carries out necessary retransmit to the packet；If it is confirmed that message
For NACK, and the HARQ process number of retransmissions has reached the maximum of default, then the packet
Bust this.
In a particular embodiment of the present invention, it is that each user configuring one for accessing LTE system is initial
HARQ maximum retransmissions, and on the basis of the HARQ maximum retransmissions of initial configuration, user is entered
Up or down link data the scheduling of row, and obtain in up or down link data scheduling process
HARQ transmission statistical information.
Step 12：According to the HARQ transmission statistical information, the HARQ maximum retransmissions are updated.
In the embodiment of the present invention, the quantity and each data of the packet of user radio transmission channel failure
Used HARQ number of retransmissions during bag transmission success, selection is adapted to the currently practical channel conditions of user
HARQ maximum retransmissions, on the one hand can reduce the probability of happening of HARQ transmission failure, on the other hand
The utilization rate of frequency domain resource can be lifted.
The method of adjustment of the hybrid automatic repeat-request maximum retransmission of the embodiment of the present invention, according to user without
Used HARQ when the quantity and each packet transmission success of the packet of line transmission channel failure
Number of retransmissions adjusts the HARQ maximum retransmissions of user, on the premise of data packetloss rate is reduced, subtracts
Lack scheduling of resource number of times, and then improve resource utilization.
Second embodiment：
As shown in Fig. 2 the method for adjustment of the hybrid automatic repeat-request maximum retransmission of the embodiment of the present invention,
Including：
Step 21：Obtain under current hybrid automatic repeat-request HARQ maximum retransmissions, Yong Huwu
The HARQ transmission statistical information of line transmission channel, the HARQ transmission statistical information includes：The user
It is used when the quantity of the packet of wireless transmission channel bust this and each packet transmission success
HARQ number of retransmissions.
Step 22：According to the packet of the user radio transmission channel failure in first scheduled time
The ratio of the total quantity of quantity and transmission packet, draws the packet loss of the user radio transmission channel.
Wherein, the total quantity of transmission packet includes the quantity and the number of transmission success of the packet of bust this
According to the quantity of bag.
Step 23：According to passing through the HARQ maximum retransmissions transmission success in first scheduled time
Packet quantity, the ratio with the total quantity of transmission packet draws the user radio transmission channel
Use the transmission success rate during HARQ maximum retransmissions.
Here, user radio transmission channel is secondary according to initial HARQ maximum re-transmissions within first scheduled time
Number, such as 6 times, carries out the scheduling of upstream or downstream link data, it is assumed that the number of the packet of transmission success
For four, the total number of the packet transmitted is 8, and is used during four packet transmission success
HARQ number of retransmissions be respectively third time, second, third time and the 4th time, then above-mentioned transmission success
Rate is 0.
Step 24：According to the packet loss and the transmission success rate, the HARQ maximums re-transmission time is updated
Number.
Specifically, as described in being increased or decreased according to default step value (if step value is 1,2 numerical value)
HARQ maximum retransmissions.
In the specific embodiment of the present invention, within first scheduled time, user radio transmission channel is according to initial
The HARQ maximum retransmissions of configuration carry out the scheduling of upstream or downstream data, and are united by base station or terminal
Used when the quantity and each packet transmission success of the packet of meter user radio transmission channel failure
HARQ number of retransmissions, provide corresponding basis for estimation for the follow-up HARQ maximum retransmissions that update, and
Above- mentioned information according to counting obtains the packet loss and transmission success rate of user radio transmission channel, Jin Ergen
Current HARQ maximum retransmissions are adjusted according to the packet loss and transmission success rate of user radio transmission channel,
The packet loss of user can be reduced can save the scheduling times of LTE system again, improve the utilization of frequency domain resource
Rate.
Further, in a particular embodiment of the present invention, above-mentioned steps 24 may particularly include：
If the packet loss is more than the first predetermined threshold value, the HARQ maximum retransmissions are improved, by institute
State HARQ maximum retransmissions and second value is updated to by the first current numerical value.
If the packet loss is less than or equal to first predetermined threshold value, and the transmission success rate is less than the
Two predetermined threshold values, then reduce the HARQ maximum retransmissions, by the HARQ maximum retransmissions by
The first current numerical value is updated to third value.
Further, in the specific embodiment of the present invention, above-mentioned steps 24 may also include：
If the packet loss be less than or equal to first predetermined threshold value, and the transmission success rate be more than or
Person is equal to second predetermined threshold value, then keeps the HARQ maximum retransmissions constant.
Further, for checking the embodiment of the present invention in update after default HARQ maximum retransmissions whether
Rationally, the method for adjustment of the hybrid automatic repeat-request maximum retransmission of the embodiment of the present invention, if described
Packet loss is less than or equal to first predetermined threshold value, and the transmission success rate is less than the second predetermined threshold value,
The HARQ maximum retransmissions are then reduced, by the HARQ maximum retransmissions by the first current number
After the step of value is updated to third value, the method for adjustment also includes：
Under current HARQ maximum retransmissions, the user radio transmission channel is obtained predetermined second
The packet loss in time；
If packet loss of the user radio transmission channel within second scheduled time is more than the described first default threshold
Value, then revert to first numerical value by current HARQ maximum retransmissions by the third value.
The method of adjustment of the hybrid automatic repeat-request maximum retransmission of the embodiment of the present invention, if being lost described
Bag rate is more than the first predetermined threshold value, then improves the HARQ maximum retransmissions, and the HARQ is maximum
After the step of number of retransmissions is updated to second value by the first current numerical value, the method for adjustment also includes：
Under current HARQ maximum retransmissions, the user radio transmission channel is obtained predetermined second
The transmission success rate and packet loss in time；
If packet loss of the user radio transmission channel within second scheduled time is less than or equal to institute
The first predetermined threshold value is stated, and the transmission success rate is less than second predetermined threshold value, then by current HARQ
Maximum retransmission reverts to first numerical value by the second value.
In a particular embodiment of the present invention, after HARQ maximum retransmissions change, second is obtained
Packet loss and transmission success rate when carrying out data transmission in the scheduled time, and by being used in second scheduled time
Whether the packet loss and transmission success rate of family wireless transmission channel judge the HARQ maximum retransmissions after change
Rationally, and irrational when recovery processing is carried out to the HARQ maximum retransmissions after change.
In addition, the method for adjustment of the hybrid automatic repeat-request maximum retransmission of the embodiment of the present invention can be specific
Realized by timer module, HARQ information collection modules and HARQ number of retransmissions judging module, under
The work of timer module, HARQ information collection modules and HARQ number of retransmissions judging modules is introduced respectively in face
Make flow.
As shown in figure 3, the workflow of timer module includes：
Step 31：Initialization timer T1 after UE accesses.
Step 32：Once, T1 timers subtract 1 for every uplink scheduling or descending scheduling.
Here scheduling is specially uplink scheduling or descending scheduling.
Step 33：Judge whether T1 timers reduce to 0.
Step 34：If T1 timers reduce to 0, start T2 timers, otherwise, jump to step 32.
Step 35：Once, T2 timers subtract 1 for every uplink scheduling or descending scheduling.
Step 36：Judge whether T2 timers reduce to 0.
Step 37：If T2 timers reduce to 0, judge whether HARQ maximum retransmissions change,
Otherwise, step 35 is jumped to；
Step 38：If HARQ maximum retransmissions do not change, step 31 is jumped to.
Step 39：If HARQ maximum retransmissions change, start T3 timers.
During T1 timers and the operation of T2 timers, retransmitted using the HARQ maximums of UE current settings
Number of times, during T3 timers are run, is collected after HARQ information during being run using T2 timers and updated
HARQ maximum retransmissions.Here, the timing of above-mentioned T2 timers and above-mentioned T3 timers
Timing is identical.
Step 310：Once, T3 timers subtract 1 for every uplink scheduling or descending scheduling.
Step 311：Judge whether T3 timers reduce to 0, and when T3 timers reduce to 0, jump to step
Rapid 31, otherwise jump to step 310.
Timer module in the embodiment of the present invention safeguards three timers altogether, and timer is UE ranks,
Initialization timer T1 after UE accesses, often dispatches a T1 timer and subtracts 1, when T1 timers reduce to 0
When, start T2 timers, as T1 timers, often dispatch a T2 timer and subtract 1, when T2 is fixed
When device when reducing to 0, start T3 timers, when T3 timers reduce to 0, T1 timers restarted again.
It is fixed in T3 using the HARQ maximum retransmissions of UE current settings during T1 and T2 timers are run
When device operation during, use T2 timers to collect the HARQ maximum retransmissions that update after HARQ information.
As shown in figure 4, in the embodiment of the present invention HARQ information collection modules workflow, including：
Step 41：It is that positive acknowledgement message or negative response disappear to judge up or descending scheduling feedback result
Breath.
Step 42：If scheduled feedback result is positive acknowledgement message, and the positive acknowledgement message is n-th weight
Pass what is received, then the successful number of the n-th retransmission number of times adds 1, and jumps to step 45.
Received as positive acknowledgement message third time is retransmitted, then the successful number of third time number of retransmissions adds 1,
Second of re-transmission of the positive acknowledgement message is received, then the successful number of second of number of retransmissions adds 1.
Step 43：If scheduled feedback result is negative acknowledgment message, it is to reach to judge HARQ number of retransmissions
HARQ maximum retransmissions.
Step 44：If reaching HARQ maximum retransmissions, the quantity of the packet of bust this adds 1 simultaneously
Step 45 is jumped to, step 41 is otherwise jumped to.
Step 45：The total quantity of transmission packet adds 1.
The HARQ information collection modules of the embodiment of the present invention, for a HARQ process, if feedback is
Positive acknowledgement message, shows that data have been correctly decoded reception, if this feedback is n-th transmission, then
The successful number of cumulative n times number of retransmissions；If feedback is negative acknowledgment message, and the number of times retransmitted does not reach
To the maximum retransmission of default, then do not count；If feedback be NACK and number of retransmissions has reached
To maximum retransmission, then a packet loss is designated as, and packet transmission success and packet bust this are total
Scheduling times are accumulated once.
As shown in figure 5, in the embodiment of the present invention HARQ number of retransmissions judging module workflow, including：
Step 51：Judge whether T2 timers reduce to 0.
Step 52：If T2 timers reduce to 0, judge whether packet loss is more than the first predetermined threshold value.
Step 521：If packet loss is more than the first predetermined threshold value, the HARQ for increasing UE current settings is maximum
Number of retransmissions.
Step 522：If packet loss is less than or equal to the first predetermined threshold value, judge that above-mentioned transmission success rate is
It is no to be less than the second predetermined threshold value.
Step 523：If packet loss is less than or equal to the first predetermined threshold value, and transmission success rate is pre- less than second
If threshold value, then the HARQ maximum retransmissions of UE current settings are reduced.
Step 53：If T2 timers do not reduce to 0, judge whether T3 timers reduce to 0.
The step is coordination with step 52.
Step 531：If T3 timers reduce to 0, reduce HARQ maximum retransmissions and packet loss is more than
First predetermined threshold value, then recover the HARQ maximum retransmissions of UE initial setting up.
Step 532：If T3 timers reduce to 0, add HARQ maximum retransmissions, packet loss and be less than
Or equal to first predetermined threshold value, and the transmission success rate is less than second predetermined threshold value, then it is extensive
The HARQ maximum retransmissions of multiple UE initial setting up.
In a particular embodiment of the present invention, if the quantity of the packet of the bust this of statistics accounts for total activation
Several ratios is higher than the first predetermined threshold value, then illustrates that the HARQ maximum retransmissions of the UE current settings will
Higher than real channel quality, at this time, it may be necessary to increase HARQ maximum retransmissions；If the packet loss is less than
Or equal to first predetermined threshold value, and the transmission success rate is less than the second predetermined threshold value, then explanation should
The HARQ number of retransmissions of UE current settings will be less than real channel quality, then reduce HARQ maximum weights
Pass number of times；If the packet loss is less than or equal to first predetermined threshold value, and the transmission success rate is big
In or equal to second predetermined threshold value, then keep HARQ maximum retransmissions constant.
The hybrid automatic repeat-request of the embodiment of the present invention is illustrated with reference to above three functional module most
The workflow of the method for adjustment of big number of retransmissions, the workflow is specifically included：
(1) the HARQ maximum retransmissions of allocating default when UE is accessed, such as four times.
(2) start T1 timers, at the end of T1 timer timing, start T2 timers, and pass through
HARQ information collection modules, count total number, the number of bust this of transmission packet in T2 timers
According to bag number and packet transmission success when the HARQ number of retransmissions that uses.At the end of T2 timers,
Statistical information is exported and gives HARQ number of retransmissions judging modules.
(3) HARQ number of retransmissions judging module first judges whether packet loss is higher than the first predetermined threshold value, if high
In then increase HARQ maximum retransmissions；Otherwise, then judge whether transmission success rate is less than the second default threshold
Value, if the reduction HARQ maximum retransmissions less than if；If the packet loss is less than or equal to described first
Predetermined threshold value, and the transmission success rate is more than or equal to second predetermined threshold value, then keeps currently
HARQ maximum retransmissions are constant.
(4) if HARQ number of retransmissions judging module does not change HARQ maximum retransmissions, jump to
Step 2；
(5) if HARQ number of retransmissions judging modules change HARQ maximum retransmissions, UE is adjusted
Degree while starting T3 timers, and counts transmission success using the HARQ maximum retransmissions after change
Rate and packet loss, at the end of T3 timers, statistical information are exported and adjudicates mould to HARQ number of retransmissions
Block.
(6) HARQ number of retransmissions judging module is judged according to statistical information, if being reduced in step 3
Number of retransmissions, and packet loss is more than first predetermined threshold value, then recovers original HARQ maximums re-transmission time
Number；If number of retransmissions is added in step 3, and packet loss is less than or equal to described the during T3 timers
One predetermined threshold value, transmission success rate is less than second predetermined threshold value, then recovers original HARQ maximums weight
Pass number of times；Otherwise, using amended HARQ maximum retransmissions.
(7) the 2nd step is jumped to, T1 timers are restarted.
In a particular embodiment of the present invention, according to the packet loss of user radio transmission channel and transmission success rate,
HARQ maximum retransmissions are modified, if packet loss is more than the first predetermined threshold value, HARQ are improved
Maximum retransmission；If packet loss is less than or equal to the first predetermined threshold value, and transmission success rate is less than second
Predetermined threshold value, then reduce HARQ maximum retransmissions, and revised result is applied into follow-up up-downgoing
In the data dispatch of link.Realize in the complex scene that multi-user carries out up-downgoing data traffic transmission,
For the actual channel quality between different user and base station, the mesh of adaptively selected HARQ maximum retransmissions
's.
3rd embodiment：
As shown in fig. 6, embodiments of the invention additionally provide a kind of hybrid automatic repeat-request maximum re-transmission time
Several adjusting apparatus, including：
First acquisition module 61, for obtaining in current hybrid automatic repeat-request HARQ maximum re-transmissions time
Under several, the HARQ transmission statistical information of user radio transmission channel, the HARQ transmission statistical information bag
Include：When the quantity and each packet transmission success of the packet of the user radio transmission channel failure
Used HARQ number of retransmissions；
Update module 62, for according to the HARQ transmission statistical information, updating the HARQ maximums weight
Pass number of times.
The adjusting apparatus of the hybrid automatic repeat-request maximum retransmission of the embodiment of the present invention, the renewal mould
Block 62 includes：
First acquisition submodule 621, for according to the user radio transmission channel in first scheduled time
The ratio of the quantity of the packet of failure and the total quantity of transmission packet, draws the user radio transmission letter
The packet loss in road；
Second acquisition submodule 622, for according to maximum by the HARQ in first scheduled time
The quantity of the packet of number of retransmissions transmission success, the ratio with the total quantity of transmission packet is drawn described
User radio transmission channel uses the transmission success rate during HARQ maximum retransmissions；
Submodule 623 is updated, for according to the packet loss and the transmission success rate, updating the HARQ
Maximum retransmission.
The adjusting apparatus of the hybrid automatic repeat-request maximum retransmission of the embodiment of the present invention, renewal
Module 623 includes：
First updating block 6231, if being more than the first predetermined threshold value for the packet loss, improves described
HARQ maximum retransmissions, is updated to by the HARQ maximum retransmissions by the first current numerical value
Two numerical value；
Second updating block 6232, if being less than or equal to first predetermined threshold value for the packet loss,
And the transmission success rate is less than the second predetermined threshold value, then the HARQ maximum retransmissions is reduced, by institute
State HARQ maximum retransmissions and third value is updated to by the first current numerical value.
The adjusting apparatus of the hybrid automatic repeat-request maximum retransmission of the embodiment of the present invention, renewal
Module 623 also includes：
3rd updating block 6233, if being less than or equal to first predetermined threshold value for the packet loss,
And the transmission success rate is more than or equal to second predetermined threshold value, then the HARQ maximums weight is kept
Pass number of times constant.
The adjusting apparatus of the hybrid automatic repeat-request maximum retransmission of the embodiment of the present invention, in addition to：
Second acquisition module 63, under current HARQ maximum retransmissions, obtain the user without
The packet loss of the line transmission channel within second scheduled time；
First recovery module 64, if the packet loss for the user radio transmission channel within second scheduled time
Rate is more than first predetermined threshold value, then current HARQ maximum retransmissions is extensive by the third value
It is first numerical value again.
The adjusting apparatus of the hybrid automatic repeat-request maximum retransmission of the embodiment of the present invention, in addition to：
3rd acquisition module 65, under current HARQ maximum retransmissions, obtain the user without
The transmission success rate and packet loss of the line transmission channel within second scheduled time；
Second recovery module 66, if for the user radio transmission channel within second scheduled time
Packet loss is less than or equal to first predetermined threshold value, and the transmission success rate is less than described second and preset
Threshold value, then revert to first numerical value by current HARQ maximum retransmissions by the second value.
Embodiments of the invention additionally provide a kind of base station, including hybrid automatic repeat-request as described above
The adjusting apparatus of maximum retransmission.
It should be noted that the device and base station are device corresponding with above method embodiment and base station, on
Stating all implementations in embodiment of the method suitable for the embodiment of the device and base station, can also reach phase
Same technique effect.
Method of adjustment, device and the base station of the hybrid automatic repeat-request maximum retransmission of the embodiment of the present invention,
Obtain the hybrid automatic repeat-request HARQ transmission statistical information of user radio transmission channel, the HARQ
Transmission statistic information includes：The quantity and every number of the packet of the user radio transmission channel failure
Used HARQ number of retransmissions during according to bag transmission success；According to the HARQ transmission statistical information, more
The HARQ maximum retransmissions of the new user.Passed in the embodiment of the present invention according to user radio transmission channel
Used HARQ number of retransmissions is adjusted when the quantity of the packet of defeated failure and each packet transmission success
The HARQ maximum retransmissions of whole user, on the premise of data packetloss rate is reduced, reduce scheduling of resource
Number of times, and then improve resource utilization.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all in this hair
Within bright spirit and principle, any modification, equivalent substitution and improvements made etc. should be included in this hair
Within bright protection domain.
Claims (13)
1. a kind of method of adjustment of hybrid automatic repeat-request maximum retransmission, it is characterised in that including：
Obtain under current hybrid automatic repeat-request HARQ maximum retransmissions, user radio transmission letter
The HARQ transmission statistical information in road, the HARQ transmission statistical information includes：The user radio transmission
Used HARQ retransmits secondary when the quantity and each packet transmission success of the packet of transmission failure
Number；
According to the HARQ transmission statistical information, the HARQ maximum retransmissions are updated.
2. the method for adjustment of hybrid automatic repeat-request maximum retransmission according to claim 1, its
It is characterised by, it is described according to the HARQ transmission statistical information, update the HARQ maximum retransmissions
The step of include：
According to the quantity and biography of the packet of the user radio transmission channel failure in first scheduled time
The ratio of the total quantity of transmission of data bag, draws the packet loss of the user radio transmission channel；
According to the packet in first scheduled time by the HARQ maximum retransmissions transmission success
Quantity, the ratio with the total quantity of transmission packet show that the user radio transmission channel is used described
Transmission success rate during HARQ maximum retransmissions；
According to the packet loss and the transmission success rate, the HARQ maximum retransmissions are updated.
3. the method for adjustment of hybrid automatic repeat-request maximum retransmission according to claim 2, its
It is characterised by, it is described according to the packet loss and the transmission success rate, update the HARQ maximums and retransmit
The step of number of times, includes：
If the packet loss is more than the first predetermined threshold value, the HARQ maximum retransmissions are improved, by institute
State HARQ maximum retransmissions and second value is updated to by the first current numerical value；
If the packet loss is less than or equal to first predetermined threshold value, and the transmission success rate is less than the
Two predetermined threshold values, then reduce the HARQ maximum retransmissions, by the HARQ maximum retransmissions by
The first current numerical value is updated to third value.
4. the method for adjustment of hybrid automatic repeat-request maximum retransmission according to claim 3, its
It is characterised by, it is described according to the packet loss and the transmission success rate, update the HARQ maximums and retransmit
The step of number of times, also includes：
If the packet loss be less than or equal to first predetermined threshold value, and the transmission success rate be more than or
Person is equal to second predetermined threshold value, then keeps the HARQ maximum retransmissions constant.
5. the method for adjustment of hybrid automatic repeat-request maximum retransmission according to claim 3, its
It is characterised by, if the packet loss is less than or equal to first predetermined threshold value, and described transmits into
Power is less than the second predetermined threshold value, then reduces the HARQ maximum retransmissions, and the HARQ is maximum
After the step of number of retransmissions is updated to third value by the first current numerical value, the method for adjustment also includes：
Under current HARQ maximum retransmissions, the user radio transmission channel is obtained predetermined second
The packet loss in time；
If packet loss of the user radio transmission channel within second scheduled time is more than the described first default threshold
Value, then revert to first numerical value by current HARQ maximum retransmissions by the third value.
6. the method for adjustment of hybrid automatic repeat-request maximum retransmission according to claim 3, its
It is characterised by, if the packet loss is more than the first predetermined threshold value, improves the HARQ maximums and retransmit
Number of times, the step of HARQ maximum retransmissions are updated to second value by the first current numerical value it
Afterwards, the method for adjustment also includes：
Under current HARQ maximum retransmissions, the user radio transmission channel is obtained predetermined second
The transmission success rate and packet loss in time；
If packet loss of the user radio transmission channel within second scheduled time is less than or equal to institute
The first predetermined threshold value is stated, and the transmission success rate is less than second predetermined threshold value, then by current HARQ
Maximum retransmission reverts to first numerical value by the second value.
7. a kind of adjusting apparatus of hybrid automatic repeat-request maximum retransmission, it is characterised in that including：
First acquisition module, for obtaining in current hybrid automatic repeat-request HARQ maximum retransmissions
Under, the HARQ transmission statistical information of user radio transmission channel, the HARQ transmission statistical information includes：
Made when the quantity and each packet transmission success of the packet of the user radio transmission channel failure
HARQ number of retransmissions；
Update module, is retransmitted for according to the HARQ transmission statistical information, updating the HARQ maximums
Number of times.
8. the adjusting apparatus of hybrid automatic repeat-request maximum retransmission according to claim 7, its
It is characterised by, the update module includes：
First acquisition submodule, for being lost according to the user radio transmission channel in first scheduled time
The ratio of the quantity of the packet lost and the total quantity of transmission packet, draws the user radio transmission channel
Packet loss；
Second acquisition submodule, for the HARQ is maximum to be retransmitted according to passing through in first scheduled time
The quantity of the packet of number of times transmission success, the ratio with the total quantity of transmission packet draws the user
Wireless transmission channel uses the transmission success rate during HARQ maximum retransmissions；
Submodule is updated, for according to the packet loss and the transmission success rate, updating the HARQ most
Big number of retransmissions.
9. the adjusting apparatus of hybrid automatic repeat-request maximum retransmission according to claim 8, its
It is characterised by, the renewal submodule includes：
First updating block, if being more than the first predetermined threshold value for the packet loss, improves the HARQ
Maximum retransmission, second value is updated to by the HARQ maximum retransmissions by the first current numerical value；
Second updating block, if being less than or equal to first predetermined threshold value, and institute for the packet loss
Transmission success rate is stated less than the second predetermined threshold value, then reduces the HARQ maximum retransmissions, will be described
HARQ maximum retransmissions are updated to third value by the first current numerical value.
10. the adjusting apparatus of hybrid automatic repeat-request maximum retransmission according to claim 9,
Characterized in that, the renewal submodule also includes：
3rd updating block, if being less than or equal to first predetermined threshold value, and institute for the packet loss
Transmission success rate is stated more than or equal to second predetermined threshold value, then keeps the HARQ maximums to retransmit secondary
Number is constant.
11. the adjusting apparatus of hybrid automatic repeat-request maximum retransmission according to claim 9,
Characterized in that, also including：
Second acquisition module, under current HARQ maximum retransmissions, obtaining the user radio
The packet loss of the transmission channel within second scheduled time；
First recovery module, if the packet loss for the user radio transmission channel within second scheduled time
More than first predetermined threshold value, then current HARQ maximum retransmissions are recovered by the third value
For first numerical value.
12. the adjusting apparatus of hybrid automatic repeat-request maximum retransmission according to claim 9,
Characterized in that, also including：
3rd acquisition module, under current HARQ maximum retransmissions, obtaining the user radio
The transmission success rate and packet loss of the transmission channel within second scheduled time；
Second recovery module, if the losing within second scheduled time for the user radio transmission channel
Bag rate is less than or equal to first predetermined threshold value, and the transmission success rate is less than the described second default threshold
Value, then revert to first numerical value by current HARQ maximum retransmissions by the second value.
13. a kind of base station, it is characterised in that automatic including the mixing as described in claim any one of 7-12
The adjusting apparatus of repeat requests maximum retransmission.
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