CN104378185B - A kind of dispatching method and device for subframe binding in LTE system - Google Patents
A kind of dispatching method and device for subframe binding in LTE system Download PDFInfo
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- CN104378185B CN104378185B CN201410734818.6A CN201410734818A CN104378185B CN 104378185 B CN104378185 B CN 104378185B CN 201410734818 A CN201410734818 A CN 201410734818A CN 104378185 B CN104378185 B CN 104378185B
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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
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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]
- H04L1/1816—Hybrid protocols; Hybrid automatic repeat request [HARQ] with retransmission of the same, encoded, message
Abstract
A kind of dispatching method and device for subframe binding in LTE system, initializes the resource allocation scope of non-TTI bundling users and TTI bundling users；For new biography or retransmit the TTI bundling users of scheduled mistake, non-self-adapting HARQ retransfer schedulings are carried out to three TTI after in a bundle；Scheduling of resource is carried out to MSG3 new biographies；For new biography or the TTI bundling users of scheduled mistake are retransmitted, non-self-adapting HARQ retransfer schedulings are carried out to first TTI in a bundle；To SPS user, semi-persistent scheduling or dynamic dispatching are carried out；HARQ self adaptations or non-self-adapting retransfer scheduling are carried out to non-TTI bundling users；Enter the scheduling of Mobile state new biography to non-TTI bundling and TTI bundling users.
Description
Technical field
It is more particularly to a kind of to be used to ensure LTE (Long Term Evolution, length the present invention relates to moving communicating field
Phase evolution system) dispatching method and device of subframe binding in system.
Background technology
In LTE system, the unit of scheduling is that using HTT, (HARQ Loop Round Trip Times, HARQ is mixing under 1ms, general scene
HARQ) be equal to 8ms HARQ self adaptations or non-self-adapting retransmission scheme be to ensure that uplink transmission rate.But
It is the edge for cell, user channel quality deteriorates, because user uplink transmit power is limited, it is impossible to pass through hoisting power
To improve the reliability of transmission, according to the HARQ retransmission process under general scene, retransmit be required for 8ms re-transmission to prolong each time
When, the edge bit error rate is higher, it is necessary to repeatedly retransmit, it is impossible to meet requirement of the business such as networking telephone VoIP to latency sensitive,
Therefore, the concept of TTI bundling (time slot binding) is proposed in LTE system, continuous 4 sub-frame of uplink is bound,
Identical RB resources (RB is Resource Block) is taken in this 4 continuous subframes, the different redundancy versions of same transmission block are transmitted
This (rv=0,2,3,1), the TTI length of scheduling increases 4ms, all of redundancy versions will be so transmitted in new biography,
Base station eNodeB can be decoded the merging of these redundancy versions, reduce propagation delay time, can meet the business pair such as VoIP
The sensitive requirement of transmission delay, meanwhile, TTI bundling can also carry out HARQ re-transmissions, equally be 4 continuous subframes one
Rise and retransmit, can so improve the probability of data successfully decoded, it is ensured that the quality of data transfer, improve the covering of LTE ascending edges
Scope.
Up use synchronous HARQ mechanism in current LTE system, i.e., using fixed retransmission time interval, general HARQ weights
Biography HTT is 8ms, and the redundancy versions that same transmission block is retransmitted are transmitted according to 0,2,3,1 sequential loop.PHICH is to mix certainly
Dynamic retransmit physical channel.Transmission uses redundancy versions 0 to transmission block for the first time, if base station eNodeB physics layer decoder is just
Really, then feedback PHICH is ACK (confirmation), and UE need not again transmit other redundancy versions, if now eNodeB issue it is new
Uplink scheduling authorization PDCCH, then UE can start to transmit new transmission block；If base station eNodeB physics layer decoder fails,
Feedback PHICH is NACK (non-acknowledgement), and UE needs to reuse redundancy versions 2 and is transmitted, and now base station eNodeB is according to adaptive
It should retransmit or non-self-adapting retransmits and decides whether to issue uplink authorization PDCCH (Physical Downlink Control
Channel, property control channel under physics), base station eNodeB is received itself and the institute for receiving before after the data of redundancy versions 2
There are data to merge to be decoded, PHICH fed back according to decoded result, so repeat until eNodeB can be successfully decoded or
Maximum transmission times are reached, UE (User Equipment, user terminal) does not retransmit any redundancy versions of this transmission block.
Retransmission scheme has two kinds：Non-self-adapting is retransmitted and adaptive retransmission.Non-self-adapting, which is retransmitted, to be referred to retransmit the money taken
Source is identical with new biography, is transmitted in the RB resources of fixed position, and base station eNodeB need not issue uplink authorization PDCCH,
User UE is that NACK is directly retransmitted in the resource that new biography is distributed according to the PHICH of base station feedback.Adaptive retransmission refers to retransmit
Can be in the transmitted over resources different from new biography, position is variable, and base station eNodeB needs to issue after being assigned with new RB resources
Uplink authorization PDCCH, user UE is retransmitted according to new uplink authorization on deallocated resources.
If base station physical layer decoder fails, general HARQ takes first non-self-adapting to retransmit again the mode of adaptive retransmission,
If non-self-adapting retransmit and adaptive retransmission distribution resource failure, that is, distribute less than RB or CCE resources (CCE for control believe
Road unit), then now feedback PHICH can not be NACK, because user receives the feedback and can directly carry out non-self-adapting re-transmission, this
When should to feed back PHICH be FAKE ACK (vacation confirm), but user receives ACK feedbacks and does not receive new uplink authorization
PDCCH, then stop the transmission of the transmission block, waits the uplink authorization retransmitted next time.
The new biography of block 1 is for example transmitted in subframe N user, base station is decoded after receiving data, on subframe N+4
Feedback PHICH,
If decoding is correct, feedback PHICH is ACK, while according to whether having the new needs of transmission block 2 transmission to determine
Whether new uplink authorization is issued in subframe N+4.
If decoding error, user needs to retransmit transmission block 1, and the success of non-self-adapting retransfer scheduling is then in subframe N+
It is NACK that PHICH is fed back on 4, uplink authorization PDCCH is not issued, transmission block 1 is retransmitted on subframe N+8, if not adaptive retransmission
Failure, then can carry out adaptive retransmission, if adaptive retransmission success, it is NACK that PHICH is fed back on subframe N+4, together
When issue the mandate PDCCH of uplink retransmission, transmission block 1 is retransmitted on subframe N+8, if adaptive retransmission also fails, in subframe N
It is FAKE ACK that PHICH is fed back on+4, and transmission block 1 is not retransmitted on subframe N+8, waits the up of re-transmission on subframe N+12 to award
Power, and retransmitted on N+16.
But for TTI bundling HARQ retransmit, due to re-transmission HTT be 16ms, the new biography on subframe N, then together
When can be in N+1, N+2 is transmitted different redundancy versions in the continuous subframes of N+3, base station receives the data of continuous 4 subframes
Merge afterwards and decoded, PHICH is fed back on subframe N+7, if decoding error, need to be retransmitted on subframe N+16, if
The success of non-self-adapting retransfer scheduling, then it is NACK PHICH to be fed back on subframe N+7, and transmission block 1 is retransmitted on subframe N+16, if
Non-self-adapting retransfer scheduling fails, then carries out adaptive retransmission, if adaptive retransmission success, feeds back on subframe N+7
PHICH is NACK, and the mandate PDCCH of uplink retransmission is issued in subframe N+12, and transmission block 1 is retransmitted on subframe N+16, if adaptive
It should retransmit and also fail, i.e., the base station side scheduling failure on subframe N+12, it is impossible to issue uplink authorization PDCCH, and PHICH is in son
Issued on frame N+7, because base station side scheduling is that in units of 1ms, the N+7 moment cannot judge the scheduling feelings at N+12 moment
Condition, PHICH and PDCCH to issue the moment different, PHICH must be fed back for NACK in N+7, so retransmitting application money for this
The scene of source failure, PHICH cannot issue FAKE ACK, and causing user to receive the NACK of the feedback of transmission block 1 can be in subframe N+16
Non-self-adapting re-transmission is carried out, the behavior with the failure of base station retransfer scheduling is inconsistent, causes decoding error and other users are done
Disturb.Therefore, the feedback and uplink authorization PDCCH of PHICH can not simultaneously be issued and led in TTI bundling HARQ re-transmissions sequential
PHICH FAKE ACK cannot be fed back under the retransmission resource scheduling failure scene of cause just to retransmit and must solve as TTI bundling
A problem certainly.
Meanwhile, TTI bundling retransmit the re-transmission that there is resource contention, such as TTI bundling with other scheduling types
Conflict with SPS semi-static scheduling resources, TTI bundling are retransmitted and conflicted with non-TTI bundling retransmission resources, and this is also
TTI bundling retransmit the problem of must solving.Semi-Persistent Scheduling, abbreviation SPS, semipermanent are adjusted
Degree, also known as semi-persistent scheduling.Each TTI is that Radio Resource difference of UE distribution (is referred to by PDCCH during with dynamic dispatching
It is fixed), SPS is allowed to be semi-statically configured Radio Resource, and the resource period is distributed to certain particular UE.As SPS is semi-static
Dispatching cycle is 20ms, it is assumed that the frequency domain resource taken in subframe 0 is RB20~RB23, and TTI bundling are on subframe N+4
New biography scheduling is carried out, the frequency domain resource of occupancy is also RB20~RB23, NACK is unsuccessfully fed back in base station demodulation on subframe N+11, then
Needs are retransmitted on subframe N+20, and just need to transmit SPS semi-persistent schedulings, i.e. TTI bundling on subframe N+20
Re-transmission conflicts with SPS semi-static scheduling resources.
The content of the invention
It is an object of the invention to the shortcoming for overcoming prior art, there is provided a kind of tune for subframe binding in LTE system
Degree method and apparatus, the technical problem existing for being retransmitted different from general HARQ is retransmitted for solving TTI bundling, it is ensured that
TTI bundling users can successfully be retransmitted in LTE uplink schedulings, will not because of retransmit application resource failure or
Conflict with other users scheduling resource and cannot be retransmitted.
Technical scheme provides a kind of dispatching method for subframe binding in LTE system, comprises the steps of：
1) bandwidth of cell and PUCCH and PRACH relevant configuration information, according to cell configuration or in reconfiguring is initial
Change scheduling resource, including determine the resource allocation scope of non-TTI bundling users and TTI bundling users；It is described
PUCCH is physical uplink control channel, and the PRACH is Physical Random Access Channel, and the TTI bundling are son
Frame is bound；
2) the TTI bundling users of scheduled mistake are retransmitted, for new biography or, to three after in a bundle
TTI carries out non-self-adapting HARQ retransfer schedulings, distributes identical RB resources；It is right for the TTI bundling users for dispatching
When three TTI non-self-adaptings are retransmitted after in one bundle, it is only necessary to distribute the RB of same position；The bundle is binding,
The HARQ is hybrid automatic repeat-request, and the RB is Resource Block；
3), according to step 1) in the resource allocation scope of gained non-TTI bundling users resource is carried out to MSG3 new biographies
Scheduling, the MSG3 is random accessing message 3；
4), for new biography or the TTI bundling users of scheduled mistake are retransmitted, according to the ACK/ of HARQ feedback
Nack message carries out non-self-adapting HARQ retransfer schedulings to first TTI in a bundle；The ACK is confirmation, institute
NACK is stated for unacknowledged information；
5), to SPS user, semi-persistent scheduling or dynamic dispatching are carried out, including first carry out semi-persistent scheduling, distribution with
Identical RB resources when SPS is activated, if RB resources are not retransmitted by TTI bundling taking, proceed semi-static tune
Degree, otherwise carries out dynamic dispatching；The SPS dispatches for semipermanent；
6) HARQ self adaptations or non-self-adapting retransfer scheduling, are carried out to non-TTI bundling users, including first carried out non-
Adaptive retransmission is dispatched, and carries out adaptive retransmission scheduling again if failure, or stop this re-transmission to wait retransmit next time；
7), to non-TTI bundling and TTI bundling users according to step 1) in result enter Mobile state new biography tune
Degree.
And, step 2) following sub-step is used,
Step 201, fill in non-self-adapting retransmit RB distribution |input paramete, the RB original positions and RB numbers of distribution with it is modulated
The resource for spending first TTI of bundle is identical；
Step 202, distributes the RB resources of same position；
Step 203, encapsulates interlayer interface；
Step 204, determines whether that the third time in a bundle is retransmitted by recording number of retransmissions, if so, then
HARQ is deleted from chained list 1 is retransmitted, if it is not, then HARQ is still present in re-transmission chained list 1.
And, step 4) following sub-step is used,
Step 301, the re-transmission chained list 2 of the TTI bundling that traversal was dispatched performs step 302；
Step 302, if scheduling interval is more than 16ms, HARQ processes is reclaimed, is no longer retransmitted and otherwise performs step
303；
Step 303, if scheduling interval is 11ms, step 304 is performed, otherwise, step 305 is performed；
Step 304, PHICH is fed back according to physical layer decoded result, step 305 is performed；The PHICH is physical mixed
Automatic re-transmission indicating channel；
Step 305, if scheduling interval is 16ms, performs step 306, otherwise, performs step 301；
Step 306, physical layer decoded result is that ACK either re-transmissions have been maxed out number of retransmissions, is now no longer entered
Row retransmission process, directly reclaims HARQ, and otherwise decoded result is NACK, performs step 307；
Step 307, fill in TTI bundling non-self-adaptings retransmit RB input, the RB original positions and RB numbers of distribution with
Scheduled first TTI of bundle resource is identical, performs step 308；
Step 308, distributes the RB resources of same position；
Step 309, encapsulates interlayer interface；
Step 310, the HARQ of scheduling is added into TTI bundling to retransmit in chained list 1, in bundle rear three
The re-transmission of individual TTI.
And, step 5) following sub-step is used,
Step 401, SPS user first carries out semi-persistent scheduling, identical RB resources when distribution is activated with SPS, if RB resources
Retransmitted and take by TTI bundling, then perform step 402, otherwise, perform step 404；
Step 402, to carry out SPS dynamic dispatchings, redistributes new RB resources, performs step 403；
Step 403, to carry out SPS dynamic dispatchings, distributes new CCE resources, performs step 404；
Step 404, encapsulates interlayer interface.
Moreover, step 6) following sub-step is used,
Step 501, non-self-adapting re-transmission is carried out, the RB resources of same position are distributed, if RB resources are by TTI
Bundling is retransmitted and taken, then perform step 502, otherwise, performs step 505；
Step 502, carries out adaptive retransmission, distributes new RB positions, no if distribution RB successes, perform step 503
Then, step 504 is performed；
Step 503, distributes new CCE resources, if distribution CCE successes, perform step 505, otherwise, performs step 504；
Step 504, stop this time retransmitting, and inform user；
Step 505, encapsulates interlayer interface.
The present invention can only carry out non-self-adapting weight by the way that TTI bundling users retransmission resource is dispatched into override
Pass, limit SPS semi-persistent scheduling combination dynamic dispatchings, non-TTI bundling users non-self-adapting retransmits combining adaptive and retransmitted
To solve the problems, such as TTI Bundling retransfer schedulings.Contrast prior art, beneficial features of the invention are as follows：
1), this is used for the dispatching method and device of subframe binding, it is ensured that TTI bundling retransmit certain in LTE system
It can apply to fixed frequency domain resource, can not inform UE in the absence of the failure of retransfer scheduling application resource and stop asking for re-transmission
Topic.
2), this is used for the dispatching method and device of subframe binding, takes TTI bundling retransfer scheduling highest priorities
Mode, do not influence existing scheduler flow, compatible existing Scheduling Framework, feasibility is high, realize it is simple, to scheduling flow
Modification it is smaller.
3), this is used for the dispatching method and device of subframe binding, it is only necessary to take non-self-adapting to retransmit, retransmission scheme letter
It is single, it is not necessary to apply for CCE resources, saved CCE occupancy.
4), this is used for the dispatching method and device of subframe binding, by using SPS semi-persistent scheduling combination dynamic dispatchings,
The mode that non-TTI bundling users non-self-adapting retransmits combining adaptive re-transmission solves TTI bundling re-transmissions and SPS
The resource conflict problem of the presence such as user scheduling, non-TTI bundling users re-transmission, implementation is simple, for not supporting
The base station scheduling flow of TTI bundling functions does not have any influence, with practical value.
Brief description of the drawings
Fig. 1 is the dispatching method of the embodiment of the present invention and the overall flow figure of device.
Fig. 2 is to be used for non-self-adapting in the embodiment of the present invention to retransmit the TTI bundling that new biography or retransfer scheduling are crossed
Three TTI scheduling flow figure after in one bundle.
Fig. 3 is first after being retransmitted in mono- bundle of TTI bundling for non-self-adapting in the embodiment of the present invention
The scheduling flow figure of TTI.
Fig. 4 is SPS semi-persistent schedulings or the scheduling flow figure of dynamic dispatching in the embodiment of the present invention.
Fig. 5 is non-TTI bundling retransfer scheduling flow charts in the embodiment of the present invention.
Embodiment
The present invention proposes by restricted T TI bundling users non-self-adapting can only be taken to retransmit, and scheduling of resource is excellent
First level highest scheme, so as to solve feedback and uplink authorization that TTI bundling HARQ retransmit PHICH in sequential
PDCCH can not issue the problem of can not feeding back PHICH FAKE ACK under caused retransmission resource scheduling failure scene simultaneously.
By TTI bundling user's retransmission priority highests, SPS semi-persistent scheduling combination dynamic dispatchings, non-TTI bundling are non-
The mode that adaptive retransmission combining adaptive is retransmitted solves the resource punching that TTI bundling are retransmitted and other scheduling types are present
Prominent problem.
Referring to Fig. 1, embodiment provides method and comprised the steps of：
101) bandwidth of cell, according to cell configuration or in reconfiguring, PUCCH (physical uplink control channel) and
PRACH (Physical Random Access Channel) relevant configuration information initializes scheduling resource, including determines non-TTI bundling
(non-subframe binding) and the resource allocation scope of TTI bundling (subframe binding) user.
102), for new biography or the TTI bundling users of scheduled mistake are retransmitted, to a bundle (binding)
Three TTI carry out non-self-adapting HARQ retransfer schedulings after interior, distribute identical RB resources.
103) resource, is carried out to MSG3 new biographies according to the resource allocation scope of the non-TTI bundling users of gained in 101)
Scheduling.MSG3 is random accessing message 3 in LTE protocol.
104), for new biography or the TTI bundling users of scheduled mistake are retransmitted, according to the ACK/ of HARQ feedback
Nack message carries out non-self-adapting HARQ retransfer schedulings to first TTI in a bundle.
105), to SPS user, semi-persistent scheduling or dynamic dispatching are carried out.
106) HARQ self adaptations or non-self-adapting retransfer scheduling, are carried out to non-TTI bundling users.
107), enter Mobile state new biography according to the result in 101) to non-TTI bundling and TTI bundling users to adjust
Degree.
Specifically, the step 101) in, the resource allocation scope of non-TTI bundling users is according to current scheduling TTI
Total bandwidth and the RB numbers (under different band width configurations take number different) that take of PUCCH, and whether have PRACH and MSG3
Resource Calculation is obtained, for example, configured according to cellular PRACH, if there is PRACH resources on current scheduling TTI, scope of resource is total
Bandwidth cuts the resource location that PUCCH resource position and PRACH take, if also MSG3 scheduling resources, also needs to cut MSG3
The resource location of occupancy, if current scheduling TTI does not have PRACH resources or MSG3 to dispatch, total bandwidth is also without cutting
The resource location of PRACH or MSG3.And the resource allocation scope of TTI bundling users is then to need to evade to greatest extent
With the resource contention of PRACH and MSG3, that is, think that each TTI has the resource of PRACH and MSG3, according to cell configuration or weight
Resource location and obtained according to configuration that the resource location and PRACH that total bandwidth in configuration cuts PUCCH configurations take
This three resource allocation scopes that can just calculate TTI bundling users of the maximum resource number of MSG3.
Specifically, the step 102) in, the TTI bundling users dispatched, in a bundle after three TTI
Non-self-adapting is retransmitted, the concept retransmitted different from the non-self-adapting in general HARQ, it is only necessary to distribute the RB of same position, be not required to
HARQ is waited to retransmit Loop Round Trip Time, it is not required that feedback PHICH.
Specifically, the step 105) in, for SPS user, if frequency domain resource position when activating semi-persistent scheduling before
Put and do not taken by TTI bundling retransfer schedulings, then proceed semi-persistent scheduling, otherwise, SPS user can only enter action
State is dispatched, and is applied for new CCE (Control Channel Element) and RB (Resource Block) resource again, is passed through
The mode of SPS dynamic dispatchings solves TTI bundling and retransmits the resource conflict problem existed with SPS semi-persistent schedulings.
Specifically, the step 106) in, what non-TTI bundling users re-transmission was taken is exactly general HARQ re-transmission sides
Case, first non-self-adapting is retransmitted, then adaptive retransmission, or stops this re-transmission wait re-transmission next time.I.e. for non-TTI
Bundling user, non-TTI bundling users first carry out non-self-adapting re-transmission when retransmitting, if the frequency domain of new biography scheduling before
Position is taken by TTI bundling retransfer schedulings, then non-self-adapting retransmits failure, can carry out adaptive retransmission, apply again
New CCE and RB resources, application failure can then issue PHICH FACK ACK, stop this time retransmitting.By non-self-adapting weight
The mode for passing combining adaptive re-transmission and issuing PHICH FACK ACK stoppings this time re-transmission solves TTI bundling re-transmissions
The resource conflict problem for existing is retransmitted with non-TTI bundling.
Specifically, the step 107) in, the scheduling of TTI bundling users new biography is only equal to 0 TTI in subframe numbers mould 4
It is upper to carry out, it is only necessary to which that new biography dispatches first TTI in a bundle, is added to HARQ after new biography scheduling
TTIbundling is retransmitted in chained list 1 and retransmitted in chained list 2.The present invention, which is set, retransmits in chained list 1 and retransmits chained list 2, retransmits chained list
1 is used for being scheduled rear 3 TTI in a bundle, retransmits the ACK/ that chained list 2 is used for being fed back according to the bundle of scheduling
Nack message carries out non-self-adapting HARQ retransfer schedulings to first TTI in bundle.
The step 102) and step 104) in, TTI bundling carry out non-self-adapting re-transmission, in identical frequency domain money
Transmitted on source position, and in the foremost of whole scheduling of resource, highest priority, in the absence of the scene of failures in resource application,
Eliminate TTI bundling and to retransmit retransmitted caused by sequential and apply for that resource failure cannot descend PHICH (Physical Hybrid
ARQ Indicator Control Channel) FAKE ACK situation.
By the limitation of above step, only need to put the dispatching sequence that TTI bundling users retransmit in scheduling process
In the foremost of all scheduling types, and non-self-adapting re-transmission can only be carried out, limitation SPS semi-persistent schedulings combine dynamic and adjust
Degree, the mode that non-TTI bundling users non-self-adapting retransmits combining adaptive re-transmission can just solve TTI bundling weights
Pass the problems caused by unusual HARQ is retransmitted.
Fig. 1 is refer to, 102) non-self-adapting retransmits new biography or retransmits tune first in scheduler task in overall procedure
Three TTI scheduling after in mono- bundle of the TTI bundling spent, detailed process refers to the explanation in Fig. 2；Then
104) first TTI in bundle is entered according to the ACK/NACK information of bundle previous to HARQ feedbacks in scheduler task
Row non-self-adapting HARQ retransfer schedulings, detailed process refers to the explanation in Fig. 3.Then 105) in scheduler task to SPS user,
Semi-persistent scheduling or dynamic dispatching are carried out, detailed process is with reference to the explanation in Fig. 4.Then 106) in scheduler task to non-
TTI bundling users, carry out non-self-adapting re-transmission or adaptive retransmission, and detailed process refers to the explanation in Fig. 5.
Fig. 2 is refer to, comprising the following steps that in scheduler task：
Step 201：Fill in non-self-adapting retransmit RB distribution |input paramete, the RB original positions and RB numbers of distribution with it is modulated
The resource of first TTI of degree bundle is identical；
Step 202：Distribute the RB resources of same position；
Step 203：Encapsulation interlayer interface；
Step 204：Determine whether that the third time in a bundle is retransmitted by recording number of retransmissions, if so, then
HARQ is deleted from chained list 1 is retransmitted, if it is not, then without deleting, HARQ is still present in re-transmission chained list 1；Terminate.
Fig. 3 is refer to, is comprised the following steps that in uplink scheduling task：
Step 301：The TTI bundling dispatched re-transmission chained list 2 is traveled through, step 302 is performed；
Step 302：If scheduling interval (sf_differ frames are poor) is more than 16ms, HARQ processes are reclaimed, no longer carry out weight
Pass, because up, take is synchronous HARQ mechanism, otherwise performs step 303；
Step 303：If scheduling interval is 11ms, step 304 is performed, otherwise, step 305 is performed；
Step 304：PHICH is fed back according to physical layer decoded result, the correct then feeding back ACK of decoding, decoding error is then anti-
NACK is presented, step 305 is performed；
Step 305：If scheduling interval is 16ms, step 306 is performed, otherwise, perform step 301.
Step 306：Physical layer decoded result is ACK or re-transmission has been maxed out number of retransmissions, is now no longer entered
Row retransmission process, directly reclaims HARQ, and otherwise decoded result is NACK, performs step 307.
Step 307：Fill in TTI bundling non-self-adaptings retransmit RB input, the RB original positions and RB numbers of distribution with
Scheduled first TTI of bundle resource is identical, performs step 308；
Step 308：Distribute the RB resources of same position；
Step 309：Encapsulation interlayer interface；
Step 310：The HARQ of scheduling is added into TTI bundling to retransmit in chained list 1, in bundle rear three
The re-transmission of individual TTI.
Fig. 4 is refer to, is comprised the following steps that in uplink scheduling task：
Step 401：SPS user first carries out semi-persistent scheduling, identical RB resources when distribution is activated with SPS, if RB resources
Retransmitted and take by TTI bundling, then perform step 402, otherwise, perform step 404；
Step 402：Now step 401 distribution failure, need to carry out SPS dynamic dispatchings, and this step redistributes new RB moneys
Source, performs step 403；
Step 403：Now step 401 distribution failure, need to carry out SPS dynamic dispatchings, and this step distributes new CCE resources,
Perform step 404；
Step 404：Encapsulation interlayer interface.
Fig. 5 is refer to, is comprised the following steps that in uplink scheduling task：
Step 501：General HARQ is retransmitted, i.e., non-TTI bundling are retransmitted, and first carry out non-self-adapting re-transmission, are distributed identical
The RB resources of position, take if RB resources are retransmitted by TTI bundling, perform step 502, otherwise, perform step
505；
Step 502：Now non-self-adapting retransmits distribution RB failures, carries out adaptive retransmission, distributes new RB positions, if point
With RB successes, then step 503 is performed, otherwise, perform step 504；
Step 503：Adaptive retransmission is distributed after new RB successes, it is necessary to new CCE resources be distributed, for issuing up award
Power PDCCH informs that user retransmits in new RB resources, if distribution CCE successes, perform step 505, otherwise, performs step
504；
Step 504：Adaptive retransmission distribution RB or CCE resource failures, then need to stop this time retransmitting, and by issuing
PHICH FAKE ACK inform user；
Step 505：Encapsulate interlayer interface.
During specific implementation, above method can realize automatic running using software engineering, can also be realized using modular mode.
The present invention correspondingly provides a kind of dispatching device for subframe binding in LTE system, comprising with lower module：
Initialization module is related to PRACH's for the bandwidth of cell and PUCCH according to cell configuration or in reconfiguring
Configuration information initialize scheduling resource, including non-TTI bundling users and TTI bundling users resource allocation model
Enclose；The PUCCH is physical uplink control channel, and the PRACH is Physical Random Access Channel, the TTI
Bundling is subframe binding；
First scheduler module, for for new biography or retransmitting the TTI bundling users of scheduled mistake, to one
Three TTI carry out non-self-adapting HARQ retransfer schedulings after in bundle, distribute identical RB resources；For the TTI for dispatching
Bundling user, to when rear three TTI non-self-adaptings are retransmitted in a bundle, it is only necessary to distribute the RB of same position；Institute
It is binding to state bundle, and the HARQ is hybrid automatic repeat-request, and the RB is Resource Block；
Second scheduler module, for the resource allocation scope according to the non-TTI bundling users of gained in initialization module
Scheduling of resource is carried out to MSG3 new biographies, the MSG3 is random accessing message 3；
3rd scheduler module, for for new biography or retransmitting the TTI bundling users of scheduled mistake, foundation
The ACK/NACK information of HARQ feedback carries out non-self-adapting HARQ retransfer schedulings to first TTI in a bundle；The ACK
It is confirmation, the NACK is unacknowledged information；
4th scheduler module, for SPS user, carrying out semi-persistent scheduling or dynamic dispatching, including first to carry out half quiet
State is dispatched, identical RB resources when distribution is activated with SPS, is taken, is continued if RB resources are not retransmitted by TTI bundling
Semi-persistent scheduling is carried out, dynamic dispatching is otherwise carried out；The SPS dispatches for semipermanent；
5th scheduler module, retransmits and adjusts for carrying out HARQ self adaptations or non-self-adapting to non-TTI bundling users
Degree, including non-self-adapting retransfer scheduling is first carried out, carry out adaptive retransmission scheduling again if failure, or stop this re-transmission etc.
Treat next re-transmission；
6th scheduler module, for non-TTI bundling and TTI bundling users according in initialization module
Result enters the scheduling of Mobile state new biography.
For ease of understanding that there is provided the example of application embodiment of the present invention technical scheme for the sake of the technology of the present invention effect：Cell
BandwidthThe RB numbers that PUCCH takesPRACH original position nprach=3, the SPS cycle are 20ms, root
It is 12 according to band width configuration limitation MSG3 maximum RB numbers, at this moment, that PRACH takes in upstream band is 3 to No. 8 RB, MSG3's
Range of distribution is 9 to No. 20 RB, then the resource allocation scope of TTI bundling is 21 to No. 46 RB.It is assumed that in subframe 0
SPS user's semi-persistent scheduling takes 22 to No. 24 RB, there is TTI bundling scheduling user datas in subframe 4, takes 21 to 23
Number RB, there is non-TTI bundling scheduling user datas in subframe 12, take 21 to No. 30 RB, it can be seen that, three kinds of users exist
The resource dispatched at the time of different has the RB of coincidence, then, retransmit TTI firstly the need of non-self-adapting in subframe 5,6,7
The data of bundling user, this dispatching priority highest, so 21 to No. 23 RB can be necessarily assigned to, if TTI
The decoding failure of bundling user data, then needed to be retransmitted in subframe 20, and non-TTI bundling user data is also solved
Code failure, need to also be retransmitted, it is seen then that in subframe 20 in subframe 20, SPS semi-persistent schedulings and TTI bundling and
There is resource contention in non-TTI bundling users retransfer scheduling, according to the implementation of the embodiment of the present invention, in subframe 20,
TTI bundling retransmission priority highests, first distribute RB resources, take 21 to No. 23 RB, then, the distribution of SPS semi-persistent schedulings
Original 22 to No. 24 RB, have found by TTI bundling user occupancies, then carry out SPS dynamic dispatchings, redistribute such as 24
To No. 26 RB, and need to redistribute CCE resources, issue uplink authorization PDCCH and inform SPS user in frequency domain resource 24 to 26
Transmitted on number RB, non-TTI bundling user data is then carried out again and is retransmitted, non-self-adapting retransmits 21 to No. 30 RB of distribution, hair
Now retransmitted by TTI bundling and SPS data takes, then adaptive retransmission, redistributed as 27 arrive 36RB, and distribute CCE moneys
Source, if it succeeds, issuing uplink authorization PDCCH informs user, otherwise, it is necessary to issuing PHICH FAKE ACK informs that user stops
Secondary re-transmission here, waits next retransmission opportunity.FAKE can not be descended so as to avoid TTI bundling re-transmission distribution resource failures
The problem of ACK, because can necessarily be assigned to identical resource with non-self-adapting, solve TTI bundling and retransmit and other numbers
According to resource conflict problem of the scheduling as present in SPS semi-persistent schedulings and non-TTI bundling re-transmissions.
It can be seen that, the present invention is by restricted T TI bundling resource allocation scopes, to TTI bundling users using non-
Adaptive retransmission and the preferential principle on dispatching sequence, with reference to non-TTI bundling users non-self-adapting or self adaptation weight
Pass and the scheme of SPS dynamic dispatchings dispatches the resource existed to solve TTI bundling users retransfer scheduling with other users
Conflict and TTI bundling retransmit failure cannot descend PHICH FAKE ACK to inform that user stops the problem of this re-transmission.
Above content is to combine specific embodiment further description made for the present invention, it is impossible to assert this hair
Bright specific implementation is confined to these explanations.For general technical staff of the technical field of the invention, do not taking off
On the premise of from present inventive concept, some simple deduction or replace can also be made, the protection of the present invention should be all considered as belonging to
Scope.
Claims (6)
1. a kind of retransfer scheduling method for subframe binding TTI bundling in LTE system, it is characterised in that comprising following
Step：
1) bandwidth of cell and PUCCH and PRACH relevant configuration information initialization, according to cell configuration or in reconfiguring is adjusted
Resource is spent, including determines the resource allocation scope of non-TTI bundling users and TTI bundling users；The PUCCH is
Physical uplink control channel, the PRACH is Physical Random Access Channel, and the TTI bundling are subframe binding；
2) the TTI bundling users of scheduled mistake are retransmitted, for new biography or, three TTI after in a bundle are entered
Row non-self-adapting HARQ retransfer schedulings, distribute identical RB resources；For the TTI bundling users dispatched, to one
When three TTI non-self-adaptings are retransmitted after in bundle, it is only necessary to distribute the RB of same position；The bundle is binding, described
HARQ is hybrid automatic repeat-request, and the RB is Resource Block；
3), according to step 1) in the resource allocation scope of gained non-TTI bundling users resource tune is carried out to MSG3 new biographies
Degree, the MSG3 is random accessing message 3；
4), for new biography or the TTI bundling users of scheduled mistake are retransmitted, the ACK/NACK according to HARQ feedback believes
Breath carries out non-self-adapting HARQ retransfer schedulings to first TTI in a bundle；The ACK is confirmation, the NACK
For unacknowledged information；
5), to SPS user, semi-persistent scheduling or dynamic dispatching are carried out, including first carries out semi-persistent scheduling, distribution swashs with SPS
Identical RB resources when living, if RB resources are not retransmitted by TTI bundling taking, proceed semi-persistent scheduling, otherwise
Carry out dynamic dispatching；The SPS is dispatched for semipermanent；
6) HARQ self adaptations or non-self-adapting retransfer scheduling, are carried out to non-TTI bundling users, including first carried out non-adaptive
Retransfer scheduling is answered, adaptive retransmission scheduling is carried out again if failure, or stop this retransmitting wait re-transmission next time；
7), to non-TTI bundling and TTI bundling users according to step 1) in result enter Mobile state new biography scheduling.
2. the retransfer scheduling method for subframe binding TTI bundling in LTE system according to claim 1, it is special
Levy and be：Step 2) following sub-step is used,
Step 201, fill in non-self-adapting retransmit RB distribution |input paramete, the RB original positions and RB numbers of distribution with it is scheduled
First TTI of bundle resource is identical；
Step 202, distributes the RB resources of same position；
Step 203, interlayer interface is encapsulated；
Step 204, determine whether that the third time in a bundle is retransmitted by recording number of retransmissions, if so, then will
HARQ is from deletion in chained list 1 is retransmitted, if it is not, then HARQ is still had in re-transmission chained list 1.
3. the retransfer scheduling method for subframe binding TTI bundling in LTE system according to claim 1, it is special
Levy and be：Step 4) following sub-step is used,
Step 301, the re-transmission chained list 2 of the TTI bundling that traversal was dispatched performs step 302；
Step 302, if scheduling interval is more than 16ms, HARQ processes are reclaimed, otherwise execution step 303 is no longer retransmitted；
Step 303, if scheduling interval is 11ms, performs step 304, otherwise, performs step 305；
Step 304, PHICH is fed back according to physical layer decoded result, performs step 305；The PHICH is that physical mixed is automatic
Retransmission indicating chanel；
Step 305, if scheduling interval is 16ms, step 306 is performed, otherwise, step 301 is performed；
Step 306, physical layer decoded result is that ACK either re-transmissions have been maxed out number of retransmissions, is now no longer weighed
Biography treatment, directly reclaims HARQ, and otherwise decoded result is NACK, performs step 307；
Step 307, fill in TTI bundling non-self-adaptings retransmit RB input, the RB original positions and RB numbers of distribution with it is modulated
The resource for spending first TTI of bundle is identical, performs step 308；
Step 308, the RB resources of same position are distributed；
Step 309, encapsulates interlayer interface；
Step 310, the HARQ for dispatching is added in TTI bundling re-transmission chained lists 1, for rear three TTI in bundle
Re-transmission.
4. the retransfer scheduling method for subframe binding TTI bundling in LTE system according to claim 1, it is special
Levy and be：Step 5) following sub-step is used,
Step 401, SPS user first carries out semi-persistent scheduling, identical RB resources when distribution is activated with SPS, if RB resources are
Retransmitted and take by TTI bundling, then perform step 402, otherwise, perform step 404；
Step 402, to carry out SPS dynamic dispatchings, new RB resources are redistributed, step 403 is performed；
Step 403, to carry out SPS dynamic dispatchings, new control channel unit CCE resources are distributed, step 404 is performed；
Step 404, interlayer interface is encapsulated.
5. the retransfer scheduling method for subframe binding TTI bundling in LTE system according to claim 1, it is special
Levy and be：Step 6) following sub-step is used,
Step 501, non-self-adapting re-transmission is carried out, the RB resources of same position are distributed, if RB resources are by TTI bundling
Retransmit and take, then perform step 502, otherwise, perform step 505；
Step 502, adaptive retransmission is carried out, new RB positions are distributed, if distribution RB successes, perform step 503, otherwise, hold
Row step 504；
Step 503, distributes new control channel unit CCE resources, if distribution CCE successes, perform step 505, otherwise, performs
Step 504；
Step 504, stop this time retransmitting, and inform user；
Step 505, encapsulates interlayer interface.
6. a kind of be used for the retransfer scheduling device of subframe binding TTI bundling in LTE system, it is characterised in that comprising following
Module：
Initialization module, for bandwidth of cell and the relevant configuration of PUCCH and PRACH according to cell configuration or in reconfiguring
Information initializing scheduling resource, includes the resource allocation scope of non-TTI bundling users and TTI bundling users；Institute
PUCCH is stated for physical uplink control channel, the PRACH is Physical Random Access Channel, the TTI bundling are
Subframe binding；
First scheduler module, for for new biography or retransmitting the TTI bundling users of scheduled mistake, to one
Three TTI carry out non-self-adapting HARQ retransfer schedulings after in bundle, distribute identical RB resources；For the TTI dispatched
Bundling user, to when rear three TTI non-self-adaptings are retransmitted in a bundle, it is only necessary to distribute the RB of same position；Institute
It is binding to state bundle, and the HARQ is hybrid automatic repeat-request, and the RB is Resource Block；
Second scheduler module, for the resource allocation scope pair according to the non-TTI bundling users of gained in initialization module
MSG3 new biographies carry out scheduling of resource, and the MSG3 is random accessing message 3；
3rd scheduler module, it is anti-according to HARQ for for new biography or retransmitting the TTI bundling users of scheduled mistake
The ACK/NACK information of feedback carries out non-self-adapting HARQ retransfer schedulings to first TTI in a bundle；The ACK is confirmation
Information, the NACK is unacknowledged information；
4th scheduler module, for SPS user, carrying out semi-persistent scheduling or dynamic dispatching, including first carry out semi-static tune
Degree, identical RB resources when distribution is activated with SPS, if RB resources are not retransmitted by TTI bundling taking, proceed
Semi-persistent scheduling, otherwise carries out dynamic dispatching；The SPS dispatches for semipermanent；
5th scheduler module, for carrying out HARQ self adaptations or non-self-adapting retransfer scheduling to non-TTI bundling users, bag
First progress non-self-adapting retransfer scheduling is included, adaptive retransmission scheduling is carried out again if failure, or stop this retransmitting under wait
Secondary re-transmission；
6th scheduler module, for the result to non-TTI bundling and TTI bundling users in initialization module
Enter the scheduling of Mobile state new biography.
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| WO2016183726A1 (en) * | 2015-05-15 | 2016-11-24 | 华为技术有限公司 | Method for transmitting data in tdd network using tti bundling technique and user equipment supporting tti bundling technique in tdd network |
| WO2017052706A1 (en) * | 2015-09-25 | 2017-03-30 | Intel IP Corporation | Supporting semi-persistent scheduling for varied transmission time intervals |
| PL3361803T3 (en) | 2016-01-25 | 2021-06-14 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | Data transmission method and terminal |
| CN108811147B (en) * | 2017-05-05 | 2023-04-07 | 中兴通讯股份有限公司 | Information transmission method and device |
| BR112019026208A2 (en) | 2017-06-15 | 2020-06-30 | Guangdong Oppo Mobile Telecommunications Corp., Ltd. | data transmission method, network device and user equipment comprising a processing unit and a communication unit, computer-readable storage media |
| CN109429336B (en) * | 2017-08-23 | 2022-10-04 | 中国电信股份有限公司 | Resource scheduling method, device and base station |
| CN112019305B (en) * | 2019-05-28 | 2023-04-18 | 阿里巴巴集团控股有限公司 | Data transmission method, device, equipment and storage medium |
| CN114270748B (en) * | 2019-10-30 | 2024-03-15 | Oppo广东移动通信有限公司 | Repeated transmission method, electronic equipment and storage medium |
| CN113993140B (en) * | 2020-07-27 | 2023-08-08 | 大唐移动通信设备有限公司 | Method, equipment and device for optimizing utilization rate of physical resource block PRB |
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