CN102892205B - A kind of method of schedule re-transmission data and device - Google Patents
A kind of method of schedule re-transmission data and device Download PDFInfo
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Abstract
The invention provides a kind of method and apparatus of schedule re-transmission data, the dispatching method of data retransmission is optimized, to reduce service delay.Wherein, the method for described a kind of schedule re-transmission data comprises: judge be scheduled subframe n+k and be scheduled subframe n+7 whether meet multiframe scheduling condition, if meet, then carry out multiframe scheduling; Otherwise, judge whether the scheduling subframe n of operation dispatching is the first scheduling subframe; When to dispatch subframe n be the first scheduling subframe, what priority scheduling was scheduled subframe n+k treats data retransmission; Wherein n is scheduling sublayer number of frames, the time delay that k is scheduling subframe and is scheduled between subframe, and described time delay is in units of subframe.The dispatching method of the present invention to data retransmission is optimized, and reduces the business propagation delay time of data retransmission.
Description
Technical field
The present invention relates to wireless communication field, particularly relate to a kind of method and apparatus of schedule re-transmission data.
Background technology
In Modern wireless communication field, more and more higher to the reliability requirement of transfer of data, a lot of system generally have employed hybrid automatic repeat-request (HARQ, Hybrid Automatic Repeat Request) technology at present, have employed the mode repeatedly retransmitted.
Long Term Evolution (LTE, Long Term Evolution) system uplink adopts HARQ, supports synchronous self-adapting HARQ and synchronous non-self-adapting HARQ.In the type2 frame structure defined in LTE protocol, the sub-frame of uplink number of ascending-descending subframes configuration 0 (DSUUUDSUUU) is greater than descending sub frame number, supports that a scheduling subframe issues a PDCCH and dispatches two sub-frame of uplink, i.e. multiframe scheduling simultaneously.Base station dispatcher treats that data dispatching can be divided into two classes, and a class is for just to pass data, and a class is data retransmission, in general, in order to reduce the time delay of packet, promotes throughput simultaneously, and scheduler can priority scheduling data retransmission.
Existing dispatching algorithm, for the scheduling of data retransmission, is that the number of retransmissions occurred according to data retransmission decides corresponding dispatching priority, the retransmission block (TB) that number of retransmissions is more, and its dispatching priority is also higher.Existing dispatching algorithm is not optimized for the scheduling of feature to data retransmission of ascending-descending subframes configuration 0, and prior art can not reach optimum in minimizing business propagation delay time.
Therefore the problem needing those skilled in the art urgently to solve is: when ascending-descending subframes configuration 0, if cannot carry out non-self-adapting re-transmission, also cannot carry out multiframe scheduling is how to dispatch data retransmission.
Summary of the invention
The invention provides a kind of method and apparatus of schedule re-transmission data, the dispatching method of data retransmission is optimized, to reduce service delay.
In order to solve the problem, the invention discloses a kind of method of schedule re-transmission data, comprising:
Judge be scheduled subframe n+k and be scheduled subframe n+7 whether meet multiframe scheduling condition, if meet, then carry out multiframe scheduling;
Otherwise, judge whether the scheduling subframe n of operation dispatching is the first scheduling subframe;
When to dispatch subframe n be the first scheduling subframe, what priority scheduling was scheduled subframe n+k treats data retransmission;
Wherein n is scheduling sublayer number of frames, the time delay that k is scheduling subframe and is scheduled between subframe, and described time delay is in units of subframe.
Preferably, describedly judge whether the scheduling subframe n of operation dispatching is that the first scheduling subframe comprises:
Judge whether the sequence of subframes n dispatching subframe is 0 or 5, if the sequence of subframes n of scheduling subframe is 0 or 5, then described scheduling subframe n is the first scheduling subframe.
Preferably, said method also comprises:
Judge whether the scheduling subframe n of operation dispatching is the second scheduling subframe, and described judgement comprises:
Judge whether the sequence of subframes n dispatching subframe is 1 or 6, if the sequence of subframes n of scheduling subframe is 1 or 6, then described scheduling subframe n is the second scheduling subframe.
Preferably, when scheduling subframe n is the second scheduling subframe, also comprise:
What obtain the subframe n+k that is scheduled respectively treats data retransmission and the number of retransmissions treating data retransmission of the subframe n+7 that is scheduled;
Subframe that what priority scheduling number of retransmissions was many are scheduled treat data retransmission.
Preferably, when scheduling subframe n is the first scheduling subframe, k value is 4;
When scheduling subframe n is the second scheduling subframe, k value is 6.
The invention also discloses a kind of device of schedule re-transmission data, comprising:
Multiframe scheduling judge module, for the condition whether the subframe n+k and the subframe n+7 that is scheduled that judges to be scheduled meets multiframe scheduling, if meet, then carries out multiframe scheduling;
First scheduling subframe judge module, for when the subframe n+k and the subframe n+7 that is scheduled that is scheduled does not meet the condition of multiframe scheduling, judges whether the scheduling subframe n of operation dispatching is the first scheduling subframe;
Scheduler module, for when to dispatch subframe n be the first scheduling subframe, what priority scheduling was scheduled subframe n+k treats data retransmission;
Wherein n is scheduling sublayer number of frames, the time delay that k is scheduling subframe and is scheduled between subframe, and described time delay is in units of subframe.
Preferably, described first scheduling subframe judge module judges whether the sequence of subframes n dispatching subframe is 0 or 5, if the sequence of subframes n of scheduling subframe is 0 or 5, then described scheduling subframe n is the first scheduling subframe.
Preferably, said apparatus also comprises:
Second scheduling subframe judge module, for judging whether the scheduling subframe n of operation dispatching is the second scheduling subframe, and described judgement comprises:
Judge whether the sequence of subframes n dispatching subframe is 1 or 6, if the sequence of subframes n of scheduling subframe is 1 or 6, then described scheduling subframe n is the second scheduling subframe.
Preferably, said apparatus also comprises:
Number of retransmissions acquisition module, for when scheduling subframe n is the second scheduling subframe, what obtain the subframe n+k that is scheduled respectively treats data retransmission and the number of retransmissions treating data retransmission of the subframe n+7 that is scheduled;
Number of retransmissions scheduler module, treats data retransmission for the many subframe that is scheduled of priority scheduling number of retransmissions.
Preferably, when scheduling subframe n is the first scheduling subframe, k value is 4;
When scheduling subframe n is the second scheduling subframe, k value is 6.
Compared with prior art, the present invention includes following advantage:
The present invention is directed to the feature of ascending-descending subframes configuration 0 (DSUUUDSUUU), namely multiframe scheduling is supported, the condition of multiframe scheduling is not met at the subframe n+k and the subframe n+7 that is scheduled that is scheduled, and scheduling subframe n is when being the first scheduling subframe, priority scheduling subframe n+k treats data retransmission, the dispatching method of data retransmission is optimized, reduces the business propagation delay time of data retransmission, improve user awareness.
Accompanying drawing explanation
Fig. 1 is the method flow diagram of a kind of schedule re-transmission data of the embodiment of the present invention;
Fig. 2 is embodiment of the present invention LTE system type1 frame structure schematic diagram;
Fig. 3 is embodiment of the present invention LTE system type2 frame structure schematic diagram;
Fig. 4 is the transmission timing figure that embodiment of the present invention ascending-descending subframes configures under 0;
Fig. 5 is the method flow diagram of a kind of schedule re-transmission data of another embodiment of the present invention;
Fig. 6 is the process chart of embodiment of the present invention data retransmission;
Fig. 7 is the structured flowchart of the device of a kind of schedule re-transmission data of the embodiment of the present invention;
Fig. 8 is the structured flowchart of the device of a kind of schedule re-transmission data of another embodiment of the present invention.
Embodiment
For enabling above-mentioned purpose of the present invention, feature and advantage become apparent more, and below in conjunction with the drawings and specific embodiments, the present invention is further detailed explanation.
Embodiment one:
With reference to Fig. 1, show the method flow diagram of a kind of schedule re-transmission data of the present invention, the present embodiment specifically can comprise the following steps:
S101, judge be scheduled subframe n+k and be scheduled subframe n+7 whether meet multiframe scheduling condition, if meet, then perform S104 carry out multiframe scheduling;
Wherein n is scheduling sublayer number of frames, the time delay that k is scheduling subframe and is scheduled between subframe, and described time delay is in units of subframe.
LTE system is divided into FDD system and TDD system, and in 3GPP TS 36.211, define two kinds of wireless frame structures, i.e. type1 and type2, be applied to FDD system and TDD system respectively, wherein type1 frame structure as shown in Figure 2, and type2 frame structure as shown in Figure 3.
Type2 wireless frame structure for LTE-TDD system in turn defines 7 kinds of different ascending-descending subframes configurations, as shown in table 1:
Table 1 ascending-descending subframes configuration (type2 wireless frame structure)
" Uplink-downlink configuration " in table 1 is ascending-descending subframes configuration, and the periodic conversion point that " Downlink-to-Uplink Switch-point periodicity " is downstream-to-upstream, " Subframe number " is subframe numbers.
For kind of the different ascending-descending subframes configuration of 7 in table 1, corresponding scheduling sequential is also different, specifically as shown in table 2 respectively:
Table 2 ascending-descending subframes scheduling sequential (type2 wireless frame structure)
Scheduling timing planning is descending sub frame scheduling oneself, may dispatch certain sub-frame of uplink simultaneously, and the time point that the sub-frame of uplink be scheduled is corresponding always lags behind time point corresponding to scheduling subframe.In table 2, can the concurrent subframe numbers serving descending grant of operation dispatching in the corresponding ascending-descending subframes structure of numeral shown in " Scheduling subframe number "; In the corresponding ascending-descending subframes structure of numeral shown in " Subframe number ", each subframe in which subframe is scheduled.Such as, for ascending-descending subframes configuration 1, subframe 0 is descending sub frame, dispatches oneself, i.e. subframe 0; Subframe 1 is descending sub frame, dispatches oneself, i.e. subframe 1, dispatches the sub-frame of uplink 7 in this radio frames simultaneously; Subframe 2 is sub-frame of uplink, is scheduled at the descending sub frame 6 of last radio frames.
As seen from Table 1, for ascending-descending subframes configuration 0, sub-frame of uplink number is more than descending sub frame number, and thus, ascending-descending subframes configuration 0 there will be the situation that a descending sub frame dispatches two sub-frame of uplink simultaneously, i.e. multiframe scheduling.Agreement specifies that controlling descending sub frame n by UL index (2bit) field in DCI Format0 only dispatches n+k subframe or only dispatch n+7 subframe, or dispatch n+k and n+7 subframe simultaneously, wherein n is scheduling sublayer number of frames, the time delay that k is scheduling subframe and is scheduled between subframe, described time delay is in units of subframe.Scheduling rule is as shown in table 3:
Table 3 multiframe scheduling scheduling relation table
Wherein, k value is existing regulation in 3GPP agreement, and value is as shown in table 4:
The value of table 4k
The present embodiment configures 0 time at ascending-descending subframes exactly, scheduling subframe n can dispatch simultaneously be scheduled subframe n+k and be scheduled subframe n+7 time, carry out implementing.
S102, when the subframe n+k and the subframe n+7 that is scheduled that is scheduled does not meet the condition of multiframe scheduling, judges whether the scheduling subframe n of operation dispatching is the first scheduling subframe;
Above-mentionedly judge whether the scheduling subframe n of operation dispatching is that the first scheduling subframe comprises:
Judge whether the sequence of subframes n dispatching subframe is 0 or 5, if the sequence of subframes n of scheduling subframe is 0 or 5, then described scheduling subframe n is the first scheduling subframe.
As can be seen from Table 2, when scheduling sublayer number of frames is 0, not only can dispatching uplink subframe 4, can also dispatching uplink subframe 7; When scheduling sublayer number of frames is 5, not only can dispatching uplink subframe 2, can also dispatching uplink subframe 9.In the present embodiment, this kind of subframe is referred to as the first scheduling subframe.
S103, when to dispatch subframe n be the first scheduling subframe, what priority scheduling was scheduled subframe n+k treats data retransmission;
As can be seen from Table 4, when ascending-descending subframes configuration 0, when scheduling subframe n is the first scheduling subframe, k value is 4;
The particularity that ascending-descending subframes configures 0 time HARQ re-transmission shows that the subframe sending PHICH is not necessarily identical with the subframe sending PDCCH, if Fig. 4 is the transmission timing figure that ascending-descending subframes configures under 0, wherein, U represents sub-frame of uplink, D represents descending sub frame, and S represents special subframe, A representative scheduling subframe, descending sub frame D and special subframe S can as scheduling subframe, and sub-frame of uplink is the subframe that is scheduled.
If send at the sub-frame of uplink 2 of radio frames nf in Fig. 4 and just pass data, then corresponding HARQ feedback sends at the descending sub frame 6 of radio frames nf, corresponding DCI format0 also sends at the descending sub frame 6 of radio frames nf, retransmits at the sub-frame of uplink 3 of radio frames nf+1; If send at the sub-frame of uplink 3 of radio frames nf and just pass data, then corresponding HARQ feedback sends at the descending sub frame 0 of radio frames nf+1, corresponding DCI format0 also sends at the descending sub frame 0 of radio frames nf+1, retransmits at the sub-frame of uplink 4 of radio frames nf+1; If send at the sub-frame of uplink 4 of radio frames nf and just pass data, then corresponding HARQ feedback sends at the descending sub frame 0 of radio frames nf+1, but the DCI format0 of correspondence can send at the descending sub frame 0 of radio frames nf+1 and also can send at the descending sub frame 1 of radio frames nf+1 (come from ascending-descending subframes and configure multiframe scheduling characteristic under 0), retransmits at the sub-frame of uplink 7 of radio frames nf+1.Send first biography data at the sub-frame of uplink 7,8,9 of radio frames nf similar with it, repeat no more.
Below in conjunction with Fig. 4, step S103 is described.For ease of describing, wait that retransmitting TB is labeled as to descending scheduling subframe n is schedulable:
During scheduling sublayer number of frames n=0, the subframe n+k that is scheduled treat data retransmission and be scheduled subframe n+7 treat that data retransmission is designated as TB (nf+1, #4) and TB (nf+1, #7) respectively,
During scheduling sublayer number of frames n=1, the subframe n+k that is scheduled treat data retransmission and be scheduled subframe n+7 treat that data retransmission is designated as TB (nf+1, #7) and TB (nf+1, #8) respectively,
During scheduling sublayer number of frames n=5, the subframe n+k that is scheduled treat data retransmission and be scheduled subframe n+7 treat that data retransmission is designated as TB (nf+1, #9) and TB (nf+2, #2) respectively,
During scheduling sublayer number of frames n=6, the subframe n+k that is scheduled treat data retransmission and be scheduled subframe n+7 treat that data retransmission is designated as TB (nf+2, #2) and TB (nf+2, #3) respectively,
As scheduling sublayer number of frames n=0, preferential data retransmission TB (TB (nf+1 is treated to the subframe n+k that is scheduled, #4)) fill order's frame scheduling, even if be scheduled subframe n+7 wait retransmit TB (TB (nf+1, #7)) number of retransmissions more than the subframe n+k that is scheduled wait retransmit TB.Reason is, if priority scheduling is scheduled, subframe n+7's treats data retransmission TB (nf+1, #7), due to the up employing synchronous HARQ of LTE, then subframe n+k wait that retransmitting the corresponding subframe that TB can only be deferred to next radio frames just may retransmit, and that is at least will postpone 10ms and just may be retransmitted; And if priority scheduling subframe n+k wait to retransmit TB, then subframe n+7 still have an opportunity to be scheduled in time retransmitting TB at n=1, and can not therefore introduce any delay.Therefore, the present embodiment is when to dispatch subframe n be the first scheduling subframe, and what priority scheduling was scheduled subframe n+k treats data retransmission.
The present embodiment is when to dispatch subframe n be the first scheduling subframe, and what priority scheduling was scheduled subframe n+k treats that data retransmission can obtain following benefit, comprising:
1. scheduling sublayer number of frames n=1, if what there is not the subframe n+7 that is scheduled treats data retransmission, namely there is not TB (nf+1, #8), so by the scheduling sublayer frame delay of TB (nf+1, #7) to n=1, TB (nf+1, #7) can be scheduled when n=1, not need to postpone 10ms and just may be retransmitted.
2. during scheduling sublayer number of frames n=1, if there is subframe n+7 treat data retransmission, namely there is TB (nf+1, #8), so by the scheduling sublayer frame delay of TB (nf+1, #7) to n=1 time, if
TB (nf+1, #7) and TB (nf+1, #8) can carry out multiframe scheduling, then carry out multiframe scheduling, can reduce service delay equally.
That needs further illustrate is TB (nf+1, #7) with TB (nf+1, probability #8) successfully carrying out multiframe scheduling is higher than TB (nf+1, #4) with TB (nf+1, #7), reason is TB (nf+1, #7) with TB (nf+1, #8) corresponding first biography data are subframe 4 under radio frames nf and subframe 7, and according to the multiframe scheduling scheduling relation table shown in table 3, these two subframes belong to multiframe just dispatches two sub-frame of uplink that can simultaneously dispatch, the multiframe subframe 7 of scheduling under radio frames nf of its data retransmission and subframe 8 are carried out, belong to multiframe equally and dispatch two sub-frame of uplink that can simultaneously dispatch.Otherwise, for TB (nf+1, #4) with TB (nf+1, #7) corresponding first biography data are subframe 3 under radio frames nf and subframe 4, according to table 3, these two subframes can not carry out multiframe scheduling, thus, carry out data retransmission corresponding to these two subframes of single frames scheduling respectively and often take number of resources and inconsistent, thus its possibility that can perform multiframe scheduling also greatly reduces.
3. for the base station equipment that disposal ability is stronger, such as at radio frames nf+1, during subframe 0, radio frames nf is not only known in base station, the decoded result (ACK or NACK) of the first biography data of subframe 3 and subframe 4, also can also know radio frames nf, the decoded result of the first biography data of subframe 7, what so base station then can be more proactive judges whether that TB (nf+1, #7) is deferred to subframe 1 from the subframe 0 of same radio frames to be processed.That is for the base station that disposal ability is stronger, the applicability of the present embodiment is better.
It should be noted that, when situation during scheduling sublayer number of frames n=5 is with n=0, do not repeat them here.
S104, when the subframe n+k and the subframe n+7 that is scheduled that is scheduled meets the condition of multiframe scheduling, to being scheduled, subframe n+k and the subframe n+7 that is scheduled carries out multiframe scheduling.
When the subframe n+k and the subframe n+7 that is scheduled that is scheduled meets the condition of multiframe scheduling, scheduling scheduling subframe n+k and the subframe n+7 that is scheduled, can save the scheduling time of data retransmission simultaneously, improves the efficiency of transmission of data retransmission.
The present embodiment is for the feature of ascending-descending subframes configuration 0 (DSUUUDSUUU), namely multiframe scheduling is supported, the condition of multiframe scheduling is not met at the subframe n+k and the subframe n+7 that is scheduled that is scheduled, and scheduling subframe n is when being the first scheduling subframe, priority scheduling subframe n+k treats data retransmission, the dispatching method of data retransmission is optimized, reduces the business propagation delay time of data retransmission, improve user awareness.
Embodiment two:
With reference to Fig. 5, show the method flow diagram of a kind of schedule re-transmission data of the present invention, the present embodiment specifically can comprise the following steps:
S501, judge be scheduled subframe n+k and be scheduled subframe n+7 whether meet multiframe scheduling condition, if meet, then perform S506 carry out multiframe scheduling;
Wherein n is scheduling sublayer number of frames, the time delay that k is scheduling subframe and is scheduled between subframe, and described time delay is in units of subframe, and the value of k is in table 4.
In the present embodiment, can by judging on all four resource whether can be found to carry respectively treat data retransmission to judge the subframe n+k and the subframe n+7 that is scheduled that is scheduled whether to meet the condition of multiframe scheduling at the subframe n+k and the subframe n+7 that is scheduled that is scheduled.If on all four resource can be found to carry respectively at the subframe n+k and the subframe n+7 that is scheduled that is scheduled treat data retransmission, the subframe n+k and the subframe n+7 that is scheduled that is then scheduled meets the condition of multiframe scheduling, otherwise the subframe n+k and the subframe n+7 that is scheduled that is scheduled does not meet the condition of multiframe scheduling.
In the present embodiment, whether the subframe n+k and the subframe n+7 that is scheduled that judges to be scheduled meets the condition of multiframe scheduling, and the concrete process chart with reference to the data retransmission shown in Fig. 6, comprises the following steps:
Step S601, whether the subframe n+k and the subframe n+7 that is scheduled that judges to be scheduled includes data retransmission;
If so, then step S602 is performed; If not, then scheduling comprises the single frames scheduling of the subframe execution step S616 that is scheduled of data retransmission.
During owing to performing multiframe scheduling, two subframes that are scheduled be scheduled share identical data indication signaling NDI, therefore, in the present embodiment, only have when the subframe n+k and the subframe n+7 that is scheduled that is scheduled includes data retransmission, just consider to perform multiframe scheduling.If two subframes that are scheduled include data retransmission, then perform the judgement of following process further, determine fill order's frame scheduling or multiframe scheduling.
Step S602, in the subframe n+k Resources allocation that is scheduled, and to arrange resource allocation identification be false;
First, be the subframe n+k Resources allocation that is scheduled, the resource of distributing is that PUSCH, PUSCH are for carrying described data retransmission.
And in the present embodiment, be also provided with resource allocation identification AllocFlag, the value of described resource allocation identification is false or true.When the subframe n+k and the subframe n+7 that is scheduled that is scheduled all does not meet the condition performing multiframe scheduling, the value according to AllocFlag determines how to process, and detailed process is introduced in detail by step below.
Step S603, the Resourse Distribute whether success of the subframe n+k that judges to be scheduled;
If so, then perform step S604, if not, then perform step S607.
If be the Resourse Distribute success of the subframe n+k that is scheduled, the scheduling process can considering to perform the subframe that is scheduled according to the resource of distributing for the subframe n+k that is scheduled then is described, otherwise the scheduling process that can not perform the subframe that is scheduled according to the resource of distributing for the subframe n+k that is scheduled is described.
But after Resourse Distribute success, concrete fill order's frame scheduling or multiframe scheduling, also will perform following process further and judge.
Step S604, being recorded as the resource that the subframe n+k that is scheduled distributes is R (n+k), and to arrange resource allocation identification be true;
Step S605, judge be scheduled subframe n+7 idling-resource in whether exist and the resource R of the subframe n+k that is scheduled (n+k) on all four resource;
If so, then perform step S606, if not, then perform step S607.
After judging the Resourse Distribute success for the subframe n+k that is scheduled in step S603, explanation can according to resource (n+k) operation dispatching process, but whether can perform multiframe scheduling according to resource (n+k), also need to meet the condition in this step S605 further.
During owing to performing multiframe scheduling, the relevant field in DCI format0 can not be respectively the different resource of two sub-frame allocation that are scheduled, and thus needs the resource of two subframes that are scheduled ensureing to be scheduled completely the same.
Therefore, in this step S605, be scheduled if judge subframe n+7 idling-resource in exist and resource R (n+k) the on all four resource of the described subframe n+k that is scheduled, just may dispatch according to resource R (n+k) the subframe n+k and n+7 that is scheduled simultaneously and dispatch to perform multiframe.
Step S606, whether the resource R (n+k) of subframe n+k of judging to be scheduled can carry the data retransmission of the subframe n+7 that is scheduled;
If so, then determine the satisfied condition performing multiframe scheduling, perform the multiframe scheduling process of step S615, dispatch according to resource R (n+k) the subframe n+k and the subframe n+7 that is scheduled that is scheduled; If not, then step S607 is performed.
If after two conditions in step S603 and step S605 all meet, also need the deterministic process performing this step S606, this judgement is mainly determined if the resource R (n+k) according to the subframe n+k that is scheduled performs multiframe scheduling, whether can carry the data retransmission of the subframe n+7 that is scheduled, just can perform multiframe scheduling according to resource R (n+k) when carrying, dispatch the subframe n+k and the subframe n+7 that is scheduled that is scheduled simultaneously.
Such as, the resource R (n+k) distributed for the subframe n+k that is scheduled is 4PRB (physical Radio Bearer, physical radio carries), the data volume that this resource can carry is 800bit, the data retransmission of subframe n+k of being scheduled is 800bit, and the data retransmission of the subframe n+7 that is scheduled is 1000bit, because R (n+k) is 4PRB, can only carry the data of 800bit, therefore it can not carry the data retransmission of the subframe n+7 that is scheduled.
Step S607, in the subframe n+7 Resources allocation that is scheduled;
If subframe n+k Resourse Distribute is unsuccessful for being scheduled, or there is not resource on all four with the resource of the subframe n+k that is scheduled in the idling-resource of the subframe n+7 that is scheduled, or the resource of the subframe n+k that is scheduled can not carry the data retransmission of the subframe n+7 that is scheduled, then illustrate and can not perform multiframe scheduling according to the resource R of the subframe n+k that is scheduled (n+k).Therefore, judge whether can perform multiframe scheduling according to the resource of the subframe n+7 that is scheduled.
Step S608, the Resourse Distribute whether success of the subframe n+7 that judges to be scheduled;
If so, then perform step S609, if not, then perform step S612.
If be the Resourse Distribute success of the subframe n+7 that is scheduled, the scheduling process can considering to perform the subframe that is scheduled according to the resource of distributing for the subframe n+7 that is scheduled then is described, otherwise the scheduling process that can not perform the subframe that is scheduled according to the resource of distributing for the subframe n+7 that is scheduled is described.
But after Resourse Distribute success, concrete fill order's frame scheduling or multiframe scheduling, also will perform following process further and judge.
Step S609, the resource being recorded as the subframe n+7 distribution that is scheduled is R (n+7);
Step S610, judge be scheduled subframe n+k idling-resource in whether exist and the resource R of the subframe n+7 that is scheduled (n+7) on all four resource;
If so, then perform step S611, if not, then perform step S613.
After judging the Resourse Distribute success for the subframe n+7 that is scheduled in step S608, explanation can according to resource (n+7) operation dispatching process, but whether can perform multiframe scheduling according to resource (n+7), also need to meet the condition in this step S610 further.
In this step S610, be scheduled if judge subframe n+k idling-resource in exist and resource R (n+7) the on all four resource of the described subframe n+7 that is scheduled, just may dispatch according to resource R (n+7) the subframe n+k and n+7 that is scheduled simultaneously and dispatch to perform multiframe.
Step S611, whether the resource R (n+7) of subframe n+7 of judging to be scheduled can carry the data retransmission of the subframe n+k that is scheduled;
If so, then determine the satisfied condition performing multiframe scheduling, perform the multiframe scheduling process of step S615, dispatch according to resource R (n+7) the subframe n+k and the subframe n+7 that is scheduled that is scheduled; If not, then step S613 is performed.
If after two conditions in step S608 and step S610 all meet, also need the deterministic process performing this step S611, this judgement is mainly determined if the resource R (n+7) according to the subframe that is scheduled performs multiframe scheduling, whether can carry the data retransmission of the subframe n+k that is scheduled, just can perform multiframe scheduling according to resource R (n+7) when carrying, dispatch the subframe n+k that is scheduled simultaneously.
S612, judges whether resource allocation identification AllocFlag is true;
When unsuccessful for the subframe n+7 Resourse Distribute that is scheduled, then judge whether resource allocation identification AllocFlag is true.If so, then illustrate for the subframe n+k Resourse Distribute success that is scheduled, perform the single frames scheduling process of step S616, the resource R (n+k) according to the subframe that is scheduled dispatches the subframe n+k that is scheduled; If not, then the Resourse Distribute being illustrated as be scheduled subframe n+k and the subframe n+7 that is scheduled is all failed, therefore, can not be this user equipment allocation resource, cannot perform the scheduling process of the subframe that is scheduled.
Step S613, judges whether described resource allocation identification AllocFlag is true;
If so, then perform step S614, if not, then perform the single frames scheduling of step S616, the resource R (n+7) according to the subframe n+7 that is scheduled dispatches the subframe n+7 that is scheduled.
After for the subframe n+7 Resourse Distribute success that is scheduled, if be scheduled subframe n+k idling-resource in do not exist and the resource R of the subframe n+7 that is scheduled (n+7) on all four resource, or when the resource of the subframe n+k that is scheduled can not carry the data retransmission of the subframe n+7 that is scheduled, then illustrate and can not perform multiframe scheduling according to the resource R of the subframe n+7 that is scheduled (n+7); And above-mentioned also judging can not perform multiframe scheduling (because only when not performing multiframe scheduling according to the resource R of the subframe n+k that is scheduled (n+k) according to the resource R of the subframe n+k that is scheduled (n+k), just judge whether to perform multiframe scheduling according to the resource R of the subframe n+7 that is scheduled (n+7)), therefore, can only fill order's frame scheduling.
The concrete resource fill order frame scheduling for that subframe that is scheduled, also will judge whether described resource allocation identification AllocFlag is true.
When AllocFlag is true, illustrate for the subframe n+k Resourse Distribute success that is scheduled, simultaneously, also judge for the subframe n+7 Resourse Distribute success that is scheduled in step S608, therefore, step S614 to be performed further, the resource fill order frame scheduling process of that subframe that is scheduled of definition base; When AllocFlag is flase, illustrate for the subframe n+k Resourse Distribute that is scheduled unsuccessful, therefore need the resource R (n+7) according to the subframe n+7 that is scheduled to dispatch the subframe n+7 that is scheduled.
Step S614, judges the number of times that the data retransmission whether number of times that the data retransmission being scheduled subframe n+k has retransmitted is more than or equal to the subframe n+7 that is scheduled has retransmitted;
The number of times that the data retransmission that the number of times that the data retransmission of subframe n+k has retransmitted if be scheduled is more than or equal to the subframe n+7 that is scheduled has retransmitted, priority scheduling is then needed to be scheduled subframe n+k, therefore, perform the single frames scheduling process of step S616, the resource R (n+k) according to the subframe n+k that is scheduled dispatches the subframe n+k that is scheduled; The number of times that the data retransmission that the number of times that the data retransmission of subframe n+k has retransmitted if be scheduled is less than the subframe n+7 that is scheduled has retransmitted, priority scheduling is then needed to be scheduled subframe n+7, therefore, perform the single frames scheduling process of step S616, the resource R (n+7) according to the subframe n+7 that is scheduled dispatches the subframe n+7 that is scheduled.
In the present embodiment, if according to the flow chart shown in Fig. 6 can perform S605 multiframe scheduling, then meet multiframe scheduling condition, if according to the flow chart shown in Fig. 6 finally perform be S606 single frames scheduling, then do not meet multiframe scheduling condition.
S502, when the subframe n+k and the subframe n+7 that is scheduled that is scheduled does not meet the condition of multiframe scheduling, judges whether the scheduling subframe n of operation dispatching is the first scheduling subframe;
Above-mentionedly judge whether the scheduling subframe n of operation dispatching is that the first scheduling subframe comprises:
Judge whether the sequence of subframes n dispatching subframe is 0 or 5, if the sequence of subframes n of scheduling subframe is 0 or 5, then described scheduling subframe n is the first scheduling subframe.
With reference to table 2, ascending-descending subframes configures 0 time, and the sequence of subframes number of scheduling subframe can be 0,1,5,6, in the present embodiment, by the sequence of subframes n of scheduling subframe be 0 or be 5 scheduling subframe be called the first scheduling subframe.
S503, when to dispatch subframe n be the first scheduling subframe, what priority scheduling was scheduled subframe n+k treats data retransmission;
As can be seen from Table 4, when ascending-descending subframes configuration 0, when scheduling subframe n is the first scheduling subframe, k value is 4;
When to dispatch subframe n be the first scheduling subframe, no matter whether the number of retransmissions treating data retransmission of scheduling subframe n+k is greater than the number of retransmissions treating data retransmission of scheduling subframe n+7, what all priority scheduling was scheduled subframe n+k treats data retransmission.
S504, when the subframe n+k and the subframe n+7 that is scheduled that is scheduled does not meet the condition of multiframe scheduling, judges whether the scheduling subframe n of operation dispatching is the second scheduling subframe;
Above-mentioned judgement comprises:
Judge whether the sequence of subframes n dispatching subframe is 1 or 6, if the sequence of subframes n of scheduling subframe is 1 or 6, then described scheduling subframe n is the second scheduling subframe.
With reference to table 2, ascending-descending subframes configures 0 time, and the sequence of subframes number of scheduling subframe can be 0,1,5,6, in the present embodiment, by the sequence of subframes n of scheduling subframe be 1 or be 6 scheduling subframe be called the second scheduling subframe.
S505, when scheduling subframe n is the second scheduling subframe, what obtain the subframe n+k that is scheduled respectively treats data retransmission and the number of retransmissions treating data retransmission of the subframe n+7 that is scheduled; Subframe that what priority scheduling number of retransmissions was many are scheduled treat data retransmission.
As can be seen from Table 4, when ascending-descending subframes configuration 0, when scheduling subframe n is the second scheduling subframe, k value is 6.
When scheduling subframe n is the second scheduling subframe, what obtain the subframe n+k that is scheduled respectively treats data retransmission and the number of retransmissions treating data retransmission of the subframe n+7 that is scheduled; If be scheduled subframe n+k treat the number of retransmissions for the treatment of data retransmission of the number of retransmissions of data retransmission more than the subframe n+7 that is scheduled, then what priority scheduling was scheduled subframe n+k treats data retransmission; If be scheduled subframe n+k treat that the number of retransmissions of data retransmission is less than the number of retransmissions treating data retransmission of the subframe n+7 that is scheduled, then what priority scheduling was scheduled subframe n+7 treats data retransmission;
S506, when the subframe n+k and the subframe n+7 that is scheduled that is scheduled meets the condition of multiframe scheduling, to being scheduled, subframe n+k and the subframe n+7 that is scheduled carries out multiframe scheduling.
When the subframe n+k and the subframe n+7 that is scheduled that is scheduled meets the condition of multiframe scheduling, scheduling scheduling subframe n+k and the subframe n+7 that is scheduled, can save the scheduling time of data retransmission simultaneously, improves the efficiency of transmission of data retransmission.
Below in conjunction with Fig. 4, the present embodiment is described further.
Suppose that certain UE transmits TB1 first in the subframe 3 of radio frames nf; TB2 is retransmitted 2nd time in the subframe 4 of radio frames nf, retransmit TB3 in the subframe 7 the 3rd time of wireless nf (to suppose that TB2 and TB3 has been dispatched by multiframe to transmit first, if this UE buffer data size is enough large, then the transmission block size of TB2 and TB3 is inevitable equal), and TB1, TB2, TB3 all pass mistake.Suppose that base station processing delay is less, namely base station is when the subframe 0 of radio frames nf+1, can know TB1, TB2, TB3 all passes mistake, corresponding the present embodiment, namely during scheduling sublayer number of frames n=0, subframe 4 treat that data retransmission is TB1, with reference to table 3, the subframe n+k that is scheduled during n=0 is subframe 4, and that is during scheduling sublayer number of frames n=0, the subframe n+k that is scheduled (subframe 4) treats that data retransmission is TB1.In like manner, during scheduling sublayer number of frames n=0, the subframe n+7 that is scheduled (subframe 7) treats that data retransmission is TB2.Method according to the present embodiment, scheduling sublayer number of frames n=0 belongs to the first scheduling subframe, what priority scheduling was scheduled subframe n+k treats data retransmission, namely priority scheduling subframe 4 treat data retransmission TB1, even if the unnecessary subframe n+k of number of retransmissions of the band data retransmission TB2 of subframe 7 treat data retransmission TB1.
During scheduling sublayer number of frames n=1, with reference to table 3, the subframe n+k that is scheduled during n=1 is subframe 7, and that is during scheduling sublayer number of frames n=1, the subframe n+k that is scheduled (subframe 7) treats that data retransmission is TB2.With reference to table 3, the subframe n+7 that is scheduled during n=1 is subframe 8, and that is during scheduling sublayer number of frames n=1, the subframe n+7 that is scheduled (subframe 8) treats that data retransmission is TB3.Retransmission time due to TB2 and TB3 is in the subframe 7 of radio frames nf+1 and subframe 8, re-transmission again according to known TB2 and TB3 of table 3 can carry out multiframe scheduling, thus the subframe 0 at radio frames nf+1 is retransmitted TB1 by base station, and radio frames nf+1 subframe 1 to the subframe n+k that is scheduled (subframe 7) treat data retransmission be TB2 and scheduling subframe n+7 (subframe 8) treat that data retransmission TB3 carries out multiframe scheduling.
Although it should be noted that TB2 has carried out 2 times and retransmitted, its number of retransmissions is more than TB1, but the present embodiment does not retransmit TB2 in this moment, but first dispatch TB1, then multiframe Schedule retransmission TB2 and TB3 is passed through at subframe nf+1, because the block size of TB2 and TB3 is equal, its possibility of successfully carrying out multiframe scheduling is also larger.
Even if TB2 and TB3 cannot carry out multiframe scheduling due on all four resource cannot be found to carry reasons such as treating data retransmission respectively or cannot carry out multiframe scheduling due to the other reasons shown in Fig. 6, method according to the present embodiment, scheduling sublayer number of frames n=1 belongs to the second scheduling subframe, obtain the number of retransmissions of be scheduled subframe n+k (subframe 7) and the subframe n+7 that is scheduled (subframe 8) respectively, the number of retransmissions treating data retransmission TB2 of scheduling subframe n+k (subframe 7) is 2 times, the number of retransmissions treating data retransmission TB3 of subframe n+7 (subframe 8) of being scheduled is 3 times, subframe that what priority scheduling number of retransmissions was many are scheduled treat data retransmission, what namely priority scheduling was scheduled subframe n+7 (subframe 8) treats data retransmission TB3.
What the present embodiment crunode illustrated is the difference with embodiment one, and it is fairly simple that the place identical with embodiment one describes, and relevant part illustrates see the part of embodiment one.
Embodiment three:
With reference to Fig. 7, it is the structured flowchart of the device of a kind of schedule re-transmission data of the present embodiment.The present embodiment specifically comprises with lower module:
Multiframe scheduling judge module 1001, for the condition whether the subframe n+k and the subframe n+7 that is scheduled that judges to be scheduled meets multiframe scheduling, if meet, then carries out multiframe scheduling;
Wherein n is scheduling sublayer number of frames, the time delay that k is scheduling subframe and is scheduled between subframe, and described time delay is in units of subframe, and the value of k is see table 4.
First scheduling subframe judge module 1002, for when the subframe n+k and the subframe n+7 that is scheduled that is scheduled does not meet the condition of multiframe scheduling, judges whether the scheduling subframe n of operation dispatching is the first scheduling subframe;
Above-mentioned first scheduling subframe judge module judges whether the sequence of subframes n dispatching subframe is 0 or 5, if the sequence of subframes n of scheduling subframe is 0 or 5, then described scheduling subframe n is the first scheduling subframe.With reference to table 2, ascending-descending subframes configures 0 time, and the sequence of subframes number of scheduling subframe can be 0,1,5,6, in the present embodiment, by the sequence of subframes n of scheduling subframe be 0 or be 5 scheduling subframe be called the first scheduling subframe.
Scheduler module 1003, for when to dispatch subframe n be the first scheduling subframe, what priority scheduling was scheduled subframe n+k treats data retransmission;
As can be seen from Table 4, when ascending-descending subframes configuration 0, when scheduling subframe n is the first scheduling subframe, k value is 4; When to dispatch subframe n be the first scheduling subframe, no matter whether the number of retransmissions treating data retransmission of scheduling subframe n+k is greater than the number of retransmissions treating data retransmission of scheduling subframe n+7, what all priority scheduling was scheduled subframe n+k treats data retransmission.
In a kind of preferred embodiment of the present embodiment three shown in Fig. 8, described device comprises:
Multiframe scheduling judge module 2001, for the condition whether the subframe n+k and the subframe n+7 that is scheduled that judges to be scheduled meets multiframe scheduling, if meet, then carries out multiframe scheduling;
Wherein n is scheduling sublayer number of frames, the time delay that k is scheduling subframe and is scheduled between subframe, and described time delay is in units of subframe, and the value of k is see table 4.
First scheduling subframe judge module 2002, for when the subframe n+k and the subframe n+7 that is scheduled that is scheduled does not meet the condition of multiframe scheduling, judges whether the scheduling subframe n of operation dispatching is the first scheduling subframe;
Scheduler module 2003, for when to dispatch subframe n be the first scheduling subframe, what priority scheduling was scheduled subframe n+k treats data retransmission;
As can be seen from Table 4, when ascending-descending subframes configuration 0, when scheduling subframe n is the first scheduling subframe, k value is 4; When to dispatch subframe n be the first scheduling subframe, no matter whether the number of retransmissions treating data retransmission of scheduling subframe n+k is greater than the number of retransmissions treating data retransmission of scheduling subframe n+7, what all priority scheduling was scheduled subframe n+k treats data retransmission.
Second scheduling subframe judge module 2004, for judging whether the scheduling subframe n of operation dispatching is the second scheduling subframe, and above-mentioned judgement comprises:
Judge whether the sequence of subframes n dispatching subframe is 1 or 6, if the sequence of subframes n of scheduling subframe is 1 or 6, then described scheduling subframe n is the second scheduling subframe.
With reference to table 2, ascending-descending subframes configures 0 time, and the sequence of subframes number of scheduling subframe can be 0,1,5,6, in the present embodiment, by the sequence of subframes n of scheduling subframe be 1 or be 6 scheduling subframe be called the second scheduling subframe.
Number of retransmissions acquisition module 2005, for when scheduling subframe n is the second scheduling subframe, what obtain the subframe n+k that is scheduled respectively treats data retransmission and the number of retransmissions treating data retransmission of the subframe n+7 that is scheduled;
As can be seen from Table 4, when ascending-descending subframes configuration 0, when scheduling subframe n is the second scheduling subframe, k value is 6.
Number of retransmissions scheduler module 2006, treats data retransmission for the many subframe that is scheduled of priority scheduling number of retransmissions.
When to dispatch subframe n be the second scheduling subframe, number of retransmissions acquisition module 2005 obtains treating data retransmission and being scheduled the number of retransmissions treating data retransmission of subframe n+7 of the subframe n+k that is scheduled respectively; If be scheduled subframe n+k treat the number of retransmissions for the treatment of data retransmission of the number of retransmissions of data retransmission more than the subframe n+7 that is scheduled, then what number of retransmissions scheduler module 2006 priority scheduling was scheduled subframe n+k treats data retransmission; If be scheduled subframe n+k treat that the number of retransmissions of data retransmission is less than the number of retransmissions treating data retransmission of the subframe n+7 that is scheduled, then what number of retransmissions scheduler module 2006 priority scheduling was scheduled subframe n+7 treats data retransmission;
For device embodiment, due to itself and embodiment of the method basic simlarity, so description is fairly simple, relevant part illustrates see the part of Fig. 1 embodiment of the method.
Each embodiment in this specification all adopts the mode of going forward one by one to describe, and what each embodiment stressed is the difference with other embodiments, between each embodiment identical similar part mutually see.
Above to the method and apparatus of a kind of schedule re-transmission data provided by the present invention, be described in detail, apply specific case herein to set forth principle of the present invention and execution mode, the explanation of above embodiment just understands method of the present invention and core concept thereof for helping; Meanwhile, for one of ordinary skill in the art, according to thought of the present invention, all will change in specific embodiments and applications, in sum, this description should not be construed as limitation of the present invention.
Claims (8)
1. a method for schedule re-transmission data, is characterized in that, comprising:
Judge be scheduled subframe n+k and be scheduled subframe n+7 whether meet multiframe scheduling condition, if meet, then carry out multiframe scheduling;
Otherwise, judge whether the scheduling subframe n of operation dispatching is the first scheduling subframe; Wherein, describedly judge whether the scheduling subframe n of operation dispatching is that the first scheduling subframe comprises: judge whether the sequence of subframes n dispatching subframe is 0 or 5, if the sequence of subframes n of scheduling subframe is 0 or 5, then described scheduling subframe n is the first scheduling subframe;
When to dispatch subframe n be the first scheduling subframe, what priority scheduling was scheduled subframe n+k treats data retransmission;
Wherein n is scheduling sublayer number of frames, the time delay that k is scheduling subframe and is scheduled between subframe, and described time delay is in units of subframe.
2. method according to claim 1, is characterized in that, also comprises:
Judge whether the scheduling subframe n of operation dispatching is the second scheduling subframe, and described judgement comprises:
Judge whether the sequence of subframes n dispatching subframe is 1 or 6, if the sequence of subframes n of scheduling subframe is 1 or 6, then described scheduling subframe n is the second scheduling subframe.
3. method according to claim 2, is characterized in that, when scheduling subframe n is the second scheduling subframe, also comprises:
What obtain the subframe n+k that is scheduled respectively treats data retransmission and the number of retransmissions treating data retransmission of the subframe n+7 that is scheduled;
Subframe that what priority scheduling number of retransmissions was many are scheduled treat data retransmission.
4. method according to claim 2, is characterized in that:
When scheduling subframe n is the first scheduling subframe, k value is 4;
When scheduling subframe n is the second scheduling subframe, k value is 6.
5. a device for schedule re-transmission data, is characterized in that, comprising:
Multiframe scheduling judge module, for the condition whether the subframe n+k and the subframe n+7 that is scheduled that judges to be scheduled meets multiframe scheduling, if meet, then carries out multiframe scheduling;
First scheduling subframe judge module, for when the subframe n+k and the subframe n+7 that is scheduled that is scheduled does not meet the condition of multiframe scheduling, judges whether the scheduling subframe n of operation dispatching is the first scheduling subframe; Wherein, described first scheduling subframe judge module judges whether the sequence of subframes n dispatching subframe is 0 or 5, if the sequence of subframes n of scheduling subframe is 0 or 5, then described scheduling subframe n is the first scheduling subframe;
Scheduler module, for when to dispatch subframe n be the first scheduling subframe, what priority scheduling was scheduled subframe n+k treats data retransmission;
Wherein n is scheduling sublayer number of frames, the time delay that k is scheduling subframe and is scheduled between subframe, and described time delay is in units of subframe.
6. device according to claim 5, is characterized in that, also comprises:
Second scheduling subframe judge module, for judging whether the scheduling subframe n of operation dispatching is the second scheduling subframe, and described judgement comprises:
Judge whether the sequence of subframes n dispatching subframe is 1 or 6, if the sequence of subframes n of scheduling subframe is 1 or 6, then described scheduling subframe n is the second scheduling subframe.
7. device according to claim 6, is characterized in that, also comprises:
Number of retransmissions acquisition module, for when scheduling subframe n is the second scheduling subframe, what obtain the subframe n+k that is scheduled respectively treats data retransmission and the number of retransmissions treating data retransmission of the subframe n+7 that is scheduled;
Number of retransmissions scheduler module, treats data retransmission for the many subframe that is scheduled of priority scheduling number of retransmissions.
8. device according to claim 6, is characterized in that:
When scheduling subframe n is the first scheduling subframe, k value is 4;
When scheduling subframe n is the second scheduling subframe, k value is 6.
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Address after: 100191 intellectual property department, wireless mobile innovation center, Institute of Telecommunications Science and technology, 2nd floor, main building, Datang Telecom Group, 40 Xueyuan Road, Haidian District, Beijing Patentee after: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY Address before: 100191 intellectual property department, wireless mobile innovation center, Institute of Telecommunications Science and technology, 2nd floor, main building, Datang Telecom Group, 40 Xueyuan Road, Haidian District, Beijing Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |
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Effective date of registration: 20210603 Address after: 100085 1st floor, building 1, yard 5, Shangdi East Road, Haidian District, Beijing Patentee after: DATANG MOBILE COMMUNICATIONS EQUIPMENT Co.,Ltd. Address before: 100191 intellectual property department, wireless mobile innovation center, Institute of Telecommunications Science and technology, 2nd floor, main building, Datang Telecom Group, 40 Xueyuan Road, Haidian District, Beijing Patentee before: CHINA ACADEMY OF TELECOMMUNICATIONS TECHNOLOGY |