CN102638333A - Method and device for scheduling uplink data - Google Patents
Method and device for scheduling uplink data Download PDFInfo
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Abstract
The embodiment of the invention provides a method and a device for scheduling uplink data. The method comprises the following steps of: performing uplink data transmission to a same uplink subframe n through a base station at uplink scheduling signal transmission time corresponding to each UE of a corresponding uplink scheduling signal transmitted in different downlink subframes, selecting one earlier uplink scheduling signal transmission time, combining local process time delay to obtain one schedule starting time, simultaneously starting scheduling during the schedule starting time by facing to each UE and aiming at a same uplink subframe n, and transmitting the uplink scheduling signal of the uplink subframe n to each UE at the uplink signal transmission time respectively corresponding to each UE, thus even through each UE respectively refers to different TDD (Time Division Duplex) uplink and downlink configurations to perform the transmission of the uplink data scheduling signal, a corresponding uplink scheduling process of the same uplink subframe can be also consistent with a scheduling manner of a performer present system so that the performance complexity of uplink scheduling in the system is reduced.
Description
Technical field
The present invention relates to the communications field, particularly a kind of dispatching method of upstream data and device.
Background technology
At present, LTE (Long Term Evolution; Long Term Evolution) supports three kinds of duplex modes, be respectively FDD (Frequency Division Duplex, FDD), H-FDD (Half FDD, Half-Frequency Division Duplex) and TDD (Time Division Duplex, time division duplex).
Wherein, FDD is meant that uplink carries out on different carrier wave frequency ranges with downlink transfer, allows base station and terminal to carry out simultaneously that signal receives and the signal transmission; TDD is meant that uplink carries out on identical carrier wave frequency range with downlink transfer, allows base station and terminal to carry out the reception of signal transmissions/signal in the different time section respectively, perhaps, and the transmission of signal reception/signal.
In LTE and wireless communication system before, only dispose a carrier wave in the sub-district, maximum bandwidth is 20MHz in the LTE system, and is specifically as shown in Figure 1.
In LTE-A (Long Term Evolution-Advanced, long-term evolution upgrading) system, the peak rate of system has huge raising than LTE, requires to reach descending 1Gbps, up 500Mbps.If only using a maximum bandwidth can't reach peak rate as the carrier wave of 20MHz requires.Therefore, the LTE-A system needs the operable bandwidth of terminal extension, has introduced CA (Carrier Aggregation thus; Carrier aggregation) technology; Be about under the same eNB (base station) a plurality of continuous or discrete carrier aggregation together, be terminal service simultaneously, so that required speed to be provided.These carrier waves that condense together are called CC (component carrier, member carrier) again.Each sub-district can be a member carrier, and the sub-district under the different e NB (member carrier) can not polymerization.For the UE that guarantees the LTE system can work under the carrier wave of each polymerization, each carrier wave maximum is no more than 20MHz, and is specifically as shown in Figure 2.Under the base station of the LTE-A shown in Fig. 2, have 4 can polymerization carrier wave, transfer of data can be carried out with the terminal simultaneously in the base station on 4 carrier waves, to improve throughput of system.
In the LTE system, fdd mode and tdd mode all are radio frames 10ms, a sub-frame 1ms.For the radio frames of each tdd mode, defined seven kinds of TDD ascending-descending subframes configurations, specifically as shown in table 1, wherein D represents the DL subframe, and U represents the UL subframe, and S represents the special subframe of TDD system; For example, configuration 1 is DSUUDDSUUD.
Table 1
(configuration of TDD ascending-descending subframes)
In the system of LTE Rel-11 or later version, for fear of the interference to other TDD systems, different TDD uplink-downlink configuration possibly used in the LTE sub-district that is positioned at different B and (frequency range).For example, consult shown in Figure 3ly, carrier wave 1 is positioned at Band A with carrier wave 2, and carrier wave 3 is positioned at Band B, and sub-district 1, sub-district 2 and sub-district 3 are respectively the sub-districts on carrier wave 1, carrier wave 2 and the carrier wave 3.The TDD uplink-downlink configuration of sub-district 1 and sub-district 2 is identical; Be TDD uplink-downlink configuration 1; The TDD uplink-downlink configuration of sub-district 3 is different with sub-district 2 with sub-district 1; Be TDD uplink-downlink configuration 2,, will occur the TDD uplink-downlink configuration condition of different of all aggregation cell of terminal so if the terminal hopes to utilize these three sub-districts to carry out carrier aggregation.
In the LTE system; For TDD uplink-downlink configuration 1-6 and conventional H ARQ (Hybrid Automatic Repeat reQuest; Mix automatic repeat requests) operation, the terminal is according to detected PDCCH (Physical Downlink Control Channel, Physical Downlink Control Channel) and/or PHICH (Physical HARQ Indication Channel with DCI form 0 in subframe n; The automatic request retransmission indicating channel of physical mixed) transmission; According to PDCCH and PHICH indication, be adjusted at corresponding PUSCH (Physical Uplink Shared Channel, the Physical Uplink Shared Channel) transmission of subframe n+k (the k value is provided by table 2).
For TDD uplink-downlink configuration 0 and conventional H ARQ operation; UE is according to detected PDCCH and/or PHICH transmission with DCI form 0 in subframe n; If the MSB of the last line index in the DCI form 0 is (Most Significant Bit; Highest significant position) be set to 1, perhaps, corresponding resource I in subframe n=0 or 5
PHICH=0 receives PHICH), UE is adjusted at (the k value provides) corresponding PUSCH transmission among the subframe n+k in table 2 so.
For TDD uplink-downlink configuration 0 and conventional H ARQ operation, if in subframe n DCI form 0 on the LSB (Least Significant Bit, least significant bit) of line index be set to 1, perhaps, respective resources I in subframe n=0 or 5
PHICH=1 receives PHICH, perhaps, receives PHICH at subframe n=1 or 6), UE is adjusted at corresponding PUSCH transmission among the subframe n+7 so.
For TDD uplink-downlink configuration 0, if in subframe n in the DCI form 0 on two MSB and the LSB of line index all be 1, UE is adjusted at corresponding PUSCH transmission among two sub-frame n+k (the k value provides) and the subframe n+7 in table 2 so.
Under the fdd mode of LTE system; The terminal is downlink data receiving in subframe n-4; The signaling whether data in sub-frame of uplink n on this descending sub frame of feedback need retransmit; Be feeding back ACK/nack message, be also referred to as PDSCH HARQ (Physical Downlink Shared Channel.Hybrid Automatic Repeat reQuest, the automatic repeat requests of Physical Downlink Shared Channel physical mixed) feedback.When carrier aggregation, the ACK/NACK information that a plurality of descending carriers are corresponding among the subframe n-4 will be fed back in sub-frame of uplink n simultaneously.
Under the tdd mode of LTE system; UE (terminal) possibly feed back the pairing ACK/NACK information of a plurality of descending sub frames at same sub-frame of uplink; Be UE when in descending sub frame n-k, detecting the PDCCH transmission that PDSCH transmission or indicating downlink semi-continuous scheduling discharge, the corresponding ACK/NACK information of feedback, wherein k ∈ K in sub-frame of uplink n; The value of set K is numbered relevant, specifically as shown in table 2 with the TDD uplink-downlink configuration of system and concrete subframe; Wherein, special, for conventional CP (Cyclic Prefix, Cyclic Prefix) special subframe configuration 0 and 5 down, and special subframe configuration 0 and 4 under the expansion CP, special subframe does not have the ACK/NACK feedback, and promptly UE is not to special subframe feeding back ACK/nack message.
Table 2
(line correlation K value: K:{k under the TDD
0, k
1... K
M-1)
As shown in table 2; A plurality of radio frames sequence arrangement; Even last subframe is k among the radio frames a; Then first subframe is k+1 among the radio frames a+1, table 2 with a radio frames be example provided each sub-frame of uplink for the situation descending sub frame in the n-k＜0 last radio frames of expression wherein of K.
In the LTE system; To carry out the UE of transmitting uplink data at subframe n for all; The delivery time n-m of dispatch is identical, and in implementation procedure, the base station is before sending dispatch; Owing to reasons such as device delays, can before sending dispatch, shift to an earlier date certain time and begin to carry out scheduling operation.For example; Consult shown in Figure 4ly, dispatched in 1 stage of Timing the base station, in first subframe n-m in 2 stages of Timing, will carry out dispatch at the UE that subframe n carries out transmitting uplink data to all and send; The maximum scheduling processing delay of supposing base station side is T; S >=m+T then, wherein, TDD uplink-downlink configuration that the concrete value of m can be used according to reality and subframe index number are confirmed.Scheduling process is accomplished in 1 stage of Timing in the base station; Promptly accomplish PUSCH resource allocation and MCS (Modulation and Coding Scheme to sub-frame of uplink n to all UE; Modulation coding mode) process such as confirms, in the Timing subframe n-m in 2 stages, will carry out the actual schedule signaling at the UE that subframe n carries out transmitting uplink data then and send all.
At LTE-A (Long Term Evolution-Advanced; Long-term evolution upgrading) in the TDD system; To the UE that a plurality of carrier waves that use different TDD uplink-downlink configuration on the different frequency bands are carried out polymerization; When carrier dispatching was striden in use in the base station, if the TDD uplink-downlink configuration operation dispatching of notifying according to the corresponding system information of the current carrier wave that is scheduled, the scheduling subframe of then sending dispatch possibly be sub-frame of uplink on scheduling carrier wave.For example; Consult shown in Fig. 5 A, to the CA UE (polymerization UE) that is operated in simultaneously on Band1 and the Band2, when carrier dispatching is striden in use in the base station; If the sub-frame of uplink on the Band2 7 is still dispatched according to TDD uplink-downlink configuration 2; Then the uplink scheduling signaling needs on the subframe 3 of Band1, to send, and the subframe 3 of Band1 is a sub-frame of uplink, can't send the uplink scheduling signaling.To this situation; The solution that proposes at present is that CAUE is dispatched according to TDD uplink-downlink configuration 1 on Band2; Be that the uplink scheduling signaling is sent on the descending sub frame 1 of Band1, the TDD uplink-downlink configuration that is different from by the system information notice that this carrier wave that is scheduled uses is called as TDD up-downgoing reference configuration.
Shown in Fig. 5 B; Because going up the TDD up-downgoing reference configuration of carrier wave use, Band2 is different from the TDD uplink-downlink configuration of notifying by system information on this carrier wave; Therefore; The base station is directed against and is operated in the CAUE on the Band2 sends the sub-frame of uplink 7 of Band 2 on the descending sub frame 1 of Band1 uplink scheduling signaling, and is directed against non-CA UE (non-polymerization UE) sends the sub-frame of uplink 7 of Band 2 on the descending sub frame 3 of Band 2 uplink scheduling signaling.
And the base station is when using this carrier dispatching, the TDD uplink-downlink configuration operation dispatching that can notify according to the current corresponding system information of carrier wave that is scheduled.For example; Shown in Fig. 6 A; The uplink scheduling signaling of the sub-frame of uplink 7 of Band 1 is sent to the CA UE that is operated in simultaneously on Band1 and the Band2 in the base station on the descending sub frame 1 of Band1, on the descending sub frame 3 of Band 2, send the uplink scheduling signaling of the sub-frame of uplink 7 of Band 2; Again for example; Consult shown in Fig. 6 B; The base station is to being operated in CA UE on Band 1 and the Band2 simultaneously, being independently operated on the non-CA UE 1 on the Band1 and being independently operated on the non-CAUE 2 on the Band 2; On the descending sub frame 1 of Band1, be directed against the uplink scheduling signaling that CAUE sends the sub-frame of uplink 7 of Band1; On the descending sub frame 1 of Band2, be directed against the uplink scheduling signaling that CA UE sends the sub-frame of uplink 7 of Band2, on the descending sub frame 1 of Band1, be directed against the uplink scheduling signaling that non-CAUE 1 sends the sub-frame of uplink 7 of Band1, on the descending sub frame 3 of Band2, be directed against the uplink scheduling signaling of the sub-frame of uplink 7 of non-CAUE 2 transmission Band2.
This shows, in LTE-A TDD system, will carry out for the UE of transmitting uplink data at subframe n for all; The delivery time of uplink scheduling signaling possibly be different, on the other hand, and in implementation procedure; Owing to the reasons such as processing time-delay of device, the scheduling of base station judgement is carried out in advance, and this time-delay all is identical for all UE; Therefore; For the UE that is operated in same sub-frame of uplink, if the uplink scheduling signaling is sent in difference constantly, then base station time that same sub-frame of uplink is begun to dispatch also is different.
For example; Consult shown in Fig. 6 A; For sub-frame of uplink 7; The base station is to CA UE and the non-CA UE uplink scheduling signaling of the sub-frame of uplink 7 of transmission Band 2 on the descending sub frame 3 of the descending sub frame 1 of Band 1 and Band 2 respectively; The processing delay of supposing the base station is the time of three sub-frame, and then base station moment of beginning to dispatch to CA UE and non-CA UE is respectively the subframe 8 of Band 1 and the subframe 0 of Band 2, thereby causing being directed against the moment that different UEs begins to modulate preparation has nothing in common with each other.For example; As shown in Figure 6; For sub-frame of uplink 7, the base station to polymerization band1 and band2 go up the CA UE of carrier wave, the uplink scheduling signaling of the sub-frame of uplink 7 of transmission Band 1 on the descending sub frame 1 of Band1 respectively; On the descending sub frame 3 of Band 2, send the uplink scheduling signaling of the sub-frame of uplink 7 of Band 2; The processing delay of supposing the base station is the time of three sub-frame, and then base station moment of on band1 and band2, beginning to dispatch to CA UE is respectively the subframe 8 of Band 1 and the subframe 0 of Band 2, has nothing in common with each other thereby cause the base station that UE is begun to carry out the moment that same sub-frame of uplink modulates.Like this, can be to existing scheduling mechanism, the implementation of scheduler and efficient; The transmission priority of UE, time-frequency resource allocating or the like all cause corresponding influence, thereby have improved the execution complexity of uplink scheduling; Reduce the execution efficient of uplink scheduling, influenced the entire system performance.
Summary of the invention
The embodiment of the invention provides a kind of dispatching method and device of upstream data, in order to carry out complexity at the uplink scheduling that reduces the base station.
The concrete technical scheme that the embodiment of the invention provides is following:
A kind of dispatching method of upstream data comprises:
To carry out a plurality of UE that transfer of data and corresponding uplink scheduling signaling are transmitted in different descending sub frames at same sub-frame of uplink; Receive the pairing TDD uplink-downlink configuration of uplink scheduling signaling according to UE, confirm the uplink scheduling signaling delivery time that each UE is corresponding;
In the delivery time of each the uplink scheduling signaling that obtains, choose and meet the first pre-conditioned delivery time, and confirm the initial moment of scheduling based on said first delivery time;
In the initial moment of said scheduling said a plurality of UE are begun the operation dispatching operation simultaneously, and, send the uplink scheduling signaling that the said same sub-frame of uplink of scheduling carries out transfer of data to corresponding UE respectively at the corresponding uplink scheduling signaling delivery time of each UE.
A kind of dispatching device of upstream data comprises:
First confirms the unit; Be used for to carry out a plurality of UE that transfer of data and corresponding uplink scheduling signaling are transmitted at different descending sub frames at same sub-frame of uplink; Receive the pairing TDD uplink-downlink configuration of uplink scheduling signaling according to UE, confirm the uplink scheduling signaling delivery time that each UE is corresponding;
Second confirms the unit, is used for the delivery time in each the uplink scheduling signaling that obtains, and chooses to meet the first pre-conditioned delivery time, and confirms the initial moment of scheduling based on said first delivery time;
Main control unit; Be used for said a plurality of UE being begun the operation dispatching operation simultaneously in the initial moment of said scheduling; And, send uplink scheduling signaling in order to schedule data transmission on said same sub-frame of uplink to corresponding UE respectively at the corresponding uplink scheduling signaling delivery time of each UE.
In the embodiment of the invention, provided a kind of uplink dispatch method, the base station is when realizing; For the corresponding different uplink scheduling signaling delivery times of each UE that carry out transmitting uplink data at same sub-frame of uplink n, select a uplink scheduling signaling delivery time early, obtain an initial moment of scheduling in conjunction with local processing delay; And dispatch the initial moment at this, towards above-mentioned each UE, begin simultaneously to dispatch to same sub-frame of uplink n; Then at each self-corresponding up signaling delivery time of each UE, to the uplink scheduling signaling of each UE transmission sub-frame of uplink n, like this; In Rel-11 and later release; Even different UEs is carried out the transmission of uplink data scheduling signaling with reference to different TDD uplink-downlink configuration separately, its corresponding uplink scheduling process also can be consistent with the scheduling mode of existing system before, thereby reduces the execution complexity of uplink scheduling in the LTE-A TDD system; And then can better carry out resource allocation according to channel condition, improve systematic function.
Description of drawings
Fig. 1 is a LTE system carrier distribution schematic diagram under the prior art;
Fig. 2 is a distribution of carriers sketch map under the CA of the LTE-A system technology under the prior art;
Fig. 3 uses different TDD ascending-descending subframes configuration schematic diagram for the different band of polymerization in the LTE-A system under the prior art;
Fig. 4 is a LTE system uplink scheduling sketch map under the prior art;
Fig. 5 A, Fig. 5 B, Fig. 6 A and Fig. 6 B are middle LTE-A system uplink scheduling sketch map under the prior art;
Fig. 7 carries out the uplink scheduling flow chart for base station in the embodiment of the invention;
Fig. 8 and Fig. 9 are uplink scheduling time diagram in the embodiment of the invention;
Figure 10 and Figure 11 are uplink scheduling sketch map in the embodiment of the invention;
Figure 12 is a base station functions structural representation in the embodiment of the invention.
Embodiment
For the uplink scheduling that reduces the base station is carried out complexity; In the embodiment of the invention, in same sub-frame of uplink n, carrying out a plurality of UE that transmitting uplink data and corresponding uplink scheduling signaling are transmitted in different descending sub frames, the base station can be in the delivery time of the uplink scheduling signaling of each UE; The delivery time of a select time uplink scheduling signaling early; In conjunction with the processing delay of device, obtain a common moment t who begins to dispatch, then; Begin to carry out scheduling operation at moment t simultaneously to a plurality of UE that in same sub-frame of uplink n, send upstream data; Then, again according to the corresponding TDD uplink-downlink configuration of carrier wave that each UE works or/and TDD up-downgoing reference configuration is sent corresponding dispatch in each self-corresponding scheduling moment of each UE to each UE; Thereby reduce the complexity of uplink scheduling, improve systematic function.
Below in conjunction with accompanying drawing the preferred embodiment of the present invention is elaborated.
In LTE-A TDD system; If CA UE polymerization a plurality of carrier waves of different TDD uplink-downlink configuration; Then the base station possibly be different from the TDD uplink-downlink configuration of being notified by system information on this carrier wave in the pairing TDD up-downgoing of the uplink scheduling sequential reference configuration of using on certain carrier wave when striding carrier dispatching to CA UE; Simultaneously, the base station is when carrying out this carrier dispatching to CA UE, and each self-corresponding TDD up-downgoing reference configuration of uplink scheduling sequential of on a plurality of carrier waves, using respectively also maybe be different.So, consult shown in Figure 7ly, in the embodiment of the invention, all carrying out transmitting uplink data at sub-frame of uplink n with a plurality of UE is example, and it is following to the detailed process that each UE carries out uplink scheduling to introduce the base station:
Step 700: to carry out a plurality of UE that transfer of data and corresponding uplink scheduling signaling are transmitted at different descending sub frames at sub-frame of uplink n; The base station receives the corresponding TDD uplink-downlink configuration of uplink scheduling signaling according to each UE, confirms the uplink scheduling signaling delivery time that each UE is corresponding.
In the present embodiment, the UE that adopt the base station receives the pairing TDD uplink-downlink configuration of uplink scheduling signaling, is the TDD uplink-downlink configuration by the system information notice; Perhaps, be a TDD uplink-downlink configuration by the high-level signaling configuration; Perhaps, be a TDD uplink-downlink configuration confirming according to pre-defined rule (like, the TDD up-downgoing reference configuration that CA UE is corresponding).
For example, for sub-frame of uplink n, the base station is gone up by the TDD uplink-downlink configuration of system information notice according to carrier wave M non-CA UE is carried out the transmission of uplink scheduling signaling, as, on subframe n-k1, send the uplink scheduling signaling, the value of k1 is with reference to shown in the table 2; Simultaneously, the base station also can be gone up the pairing TDD uplink-downlink configuration of CA UE reception uplink scheduling signaling according to carrier wave M CA UE is carried out the transmission of uplink scheduling signaling, promptly on subframe n-k2, sends the uplink scheduling signaling, and the value of k2 is with reference to shown in the table 2; If being different from carrier wave M, the TDD up-downgoing reference configuration that carrier wave M is corresponding goes up the TDD uplink-downlink configuration by the system information notice, then k1 ≠ K2; Wherein, The value of k1 can go up by the TDD uplink-downlink configuration of system information notice and subframe index according to carrier wave M number to be confirmed; And TDD up-downgoing reference configuration that the value of k2 can be used on carrier wave M according to CA UE and subframe index number are confirmed; Relevant introduction in the concrete reference background technology is repeated no more at this.
Again for example; For sub-frame of uplink n, the base station receives the uplink scheduling signaling according to same CA UE and distinguishes corresponding TDD uplink-downlink configuration on different carrier, and this CA UE is sent the uplink scheduling signaling respectively on different carrier; As; On the subframe n-k1 of carrier wave 1, send the uplink scheduling signaling, on the subframe n-k2 of carrier wave 2, send the uplink scheduling signaling, the value of k1 and k2 is with reference to shown in the table 2; Wherein, if CA UE receives uplink scheduling signaling, then k1 ≠ K2 according to different TDD uplink-downlink configuration respectively on different carrier; The value of k1 and k2 can receive the pairing TDD uplink-downlink configuration of uplink scheduling signaling and subframe index according to CA UE and number confirm that the relevant introduction in the concrete reference background technology is repeated no more at this on different carrier.
Again for example: for sub-frame of uplink n; The base station receives the uplink scheduling signaling according to different UEs (comprising CA UE and non-CA UE) and distinguishes corresponding TDD uplink-downlink configuration on a plurality of carrier waves; Each UE is sent the uplink scheduling signaling respectively on corresponding carrier wave, promptly the subframe n-k1 at carrier wave 1 sends the uplink scheduling signaling to CA UE, on the subframe n-k1 of carrier wave 2, sends the uplink scheduling signaling to CA UE; And; On the subframe n-k3 of carrier wave 1, send the uplink scheduling signaling, on the subframe n-k4 of carrier wave 2, send the uplink scheduling signaling, wherein to non-CA UE to non-CA UE; The value of k1, k2, k3 and k4 is with reference to shown in the table 2; The value of k1, k2, k3 and k4 can receive the pairing TDD uplink-downlink configuration of uplink scheduling signaling and subframe index according to CA UE and number confirm that the relevant introduction in the concrete reference background technology is repeated no more at this on different carrier.
Step 710: the base station is chosen and is met the first pre-conditioned delivery time in the delivery time of each the uplink scheduling signaling that obtains, and confirms the initial moment of scheduling based on this first delivery time.
In the present embodiment; Preferable, can in the delivery time of each the uplink scheduling signaling that obtains, time delivery time the earliest be confirmed as above-mentioned first delivery time; Then; The initial moment of scheduling just can be confirmed based on this first delivery time in the base station, is specially: the interval duration between the order initial moment of scheduling and first delivery time is not less than local processing delay.
For example, the delivery time of uplink scheduling signaling of supposing to use sub-frame of uplink n to carry out the CA UE of transmitting uplink data is subframe n-k1, and the delivery time of uplink scheduling signaling that uses sub-frame of uplink n to carry out the non-CA UE of transmitting uplink data is subframe n-k2; So, consult Fig. 8 and shown in Figure 9, the base station 1 stage of Timing to sub-frame of uplink n operation dispatching; Wherein, the zero hour of Timing1 can be according to TDD uplink-downlink configuration, the TDD up-downgoing reference configuration of the actual use of carrier wave M, and the device processing delay of subframe index number and base station is confirmed; Be specially: the size of k1 and k2 at first relatively, get wherein higher value, again according to the device processing delay T of base station; Must arrive the initial moment subframe n-s that dispatch the base station, wherein, the concrete value of s can be confirmed according to the concrete implementation of base station flexibly; But must satisfy s >=max (k1 at least; K2)+and T, the base station will will begin to carry out the uplink scheduling process at CA UE and the non-CA UE that subframe n carries out transmitting uplink data to all simultaneously at subframe n-s, and accomplishes this process in 1 stage at Timing; Wherein, Timing 1 >=T.
Step 720: the base station begins the operation dispatching operation in the initial moment of scheduling to a plurality of UE that use sub-frame of uplink n to carry out transmitting uplink data simultaneously; And, send uplink scheduling signaling in order to schedule data transmission on sub-frame of uplink n to corresponding UE respectively at the corresponding uplink scheduling signaling delivery time of each UE.
Consult Fig. 8 and shown in Figure 9; Under two kinds of application scenarioss of k1＞k2 and k1＜k2, the dispatch transmission of sub-frame of uplink n is carried out to non-CAUE and CAUE respectively at the specific sub-frame n-k1 and the subframe n-k2 in 2 stages of Timing in the base station, wherein; Timing 2=max (k1, k2).
Based on the foregoing description, be example with k1＞k2 and two kinds of application scenarioss of k1＜k2 respectively below, the practical implementation of the foregoing description is elaborated.
Under first kind of application scenarios; K1＞k2; Consult shown in Figure 8ly, the base station will begin to carry out uplink scheduling at subframe n-s at CA UE and the non-CA UE that subframe n carries out transmitting uplink data to all simultaneously, accomplish scheduling process in 1 stage of Timing after; The uplink scheduling signaling that the base station is sent subframe n at the subframe n-k1 in 2 stages of Timing to non-CA UE, the uplink scheduling signaling of CA UE being sent subframe n at subframe n-k2.
For example, consult shown in Figure 10ly, the carrier wave 1 that is operated on the band1 uses TDD uplink-downlink configuration 2; The carrier wave 2 that is operated on the band2 uses TDD uplink-downlink configuration 1; For the CA UE that is operated in simultaneously on these two carrier waves, if with carrier wave 1 as main carrier, when striding carrier dispatching so; The TDD up-downgoing reference configuration of this CA UE on carrier wave 2 is TDD uplink-downlink configuration 2; Be that the base station is directed against CAUE and on carrier wave 2, carries out the transmission of uplink scheduling signaling according to the scheduling sequential of TDD uplink-downlink configuration 2, and, still carry out the transmission of dispatch by the scheduling sequential of TDD uplink-downlink configuration 1 for the non-CA UE that is independently operated on the carrier wave 2.Suppose; The device processing delay of base station comprises the duration of three sub-frame; So, for the sub-frame of uplink on the carrier wave 27, the moment of uplink scheduling signaling is sent early than the moment of CA UE being sent the uplink scheduling signaling in the base station to non-CAUE; Therefore; The zero hour in Timing1 stage, to be the base station sent three sub-frame before moment of uplink scheduling signaling to non-CAUE, promptly the base station will subframe 8 or the moment more early to being operated in the uplink scheduling that CA UE and non-CA UE on the carrier wave 2 begin to be directed against sub-frame of uplink 7 simultaneously, comprise processes such as the PUSCH resource allocation of sub-frame of uplink 7 and MCS decisions.Accomplish in stage to after the scheduling process of sub-frame of uplink 7 at Timing1; In the Timing2 stage; On the descending sub frame 3 of base station in carrier wave 1 CA UE sent the uplink scheduling signaling of sub-frame of uplink 7, on the descending sub frame 1 carrier wave 2 in to the uplink scheduling signaling of non-CAUE transmission sub-frame of uplink 7.
Under second kind of application scenarios; K1＜k2; Consult shown in Figure 9ly, the base station will begin to carry out uplink scheduling at subframe n-s at CA UE and the non-CA UE that subframe n carries out transmitting uplink data to all simultaneously, accomplish scheduling process in 1 stage of Timing after; The uplink scheduling signaling that the base station is sent subframe n at the subframe n-k2 in 2 stages of Timing to CAUE, the uplink scheduling signaling of non-CA UE being sent subframe n at subframe n-k1.
For example, consult shown in Figure 11ly, the carrier wave 1 that is operated on the band1 uses TDD uplink-downlink configuration 1; The carrier wave 2 that is operated on the band2 uses TDD uplink-downlink configuration 2; For the CA UE that is operated in simultaneously on these two carrier waves, if with carrier wave 1 as main carrier, when striding carrier dispatching so; The TDD up-downgoing reference configuration of this CA-UE on carrier wave 2 is TDD uplink-downlink configuration 1; Be that the base station is directed against CA UE carries out the uplink scheduling signaling according to the scheduling sequential of TDD uplink-downlink configuration 1 on carrier wave 2 transmission, and for the non-CA UE that is independently operated on the carrier wave 2, the transmission of uplink scheduling signaling is still carried out in the base station by the scheduling sequential of TDD uplink-downlink configuration 2.Suppose that the device processing delay of base station comprises the duration of three sub-frame; So; For the sub-frame of uplink on the carrier wave 27; The moment of uplink scheduling signaling is sent early than the moment of non-CA UE being sent the uplink scheduling signaling in the base station to CAUE, therefore, be the uplink scheduling signaling is sent in the base station to CA UE the moment three sub-frame before the zero hour in Timing1 stage; Be that the base station will begin the uplink scheduling to sub-frame of uplink 7 to CA UE and the non-CA UE that is operated on the carrier wave 2 simultaneously in the subframe 8 or the moment more early; Comprise processes such as the PUSCH resource allocation of sub-frame of uplink 7 and MCS decisions, accomplish in the stage to after the scheduling process of sub-frame of uplink 7, in the Timing2 stage at Timing1; On the descending sub frame 1 of base station in carrier wave 1 CA UE sent the uplink scheduling signaling of sub-frame of uplink 7, on the descending sub frame 3 carrier wave 2 in to the uplink scheduling signaling of non-CAUE transmission sub-frame of uplink 7.
Certainly, above-mentioned first application scenarios and second application scenarios are that example is introduced with non-CA UE and CA UE only.In the practical application; For CA UE different carrier use different TDD uplink-downlink configuration receive the uplink scheduling signalings application scenarios (as; CA UE receives the uplink scheduling signaling that send the base station at the subframe n-k1 of carrier wave 1; On the subframe n-k2 of carrier wave 2, receive the uplink scheduling signaling that send the base station), and (on the subframe n-k2 of the subframe n-k1 of carrier wave 1 and carrier wave 2, receive the uplink scheduling signaling of base station transmission like, CA UE at the application scenarios that different carrier uses different TDD uplink-downlink configuration to receive the uplink scheduling signalings for a plurality of UE; Non-CA UE 1 receives the uplink scheduling signaling that send the base station on the subframe n-k3 of carrier wave 1; Non-CA UE2 receives the uplink scheduling signaling that send the base station on the subframe n-k4 of carrier wave 2), the technical scheme that the foregoing description provides is all suitable equally, repeats no more at this.
In the foregoing description, to consult shown in Figure 12ly, in the embodiment of the invention, the base station comprises that first confirms that unit 120, second confirms unit 121 and main control unit 122, wherein,
First confirms unit 120; Be used for to carry out a plurality of UE that transfer of data and corresponding uplink scheduling signaling are transmitted at different descending sub frames at same sub-frame of uplink; Receive the pairing TDD uplink-downlink configuration of uplink scheduling signaling according to each UE, confirm the uplink scheduling signaling delivery time that each UE is corresponding;
Second confirms unit 121, is used for the delivery time in each the uplink scheduling signaling that obtains, and chooses to meet the first pre-conditioned delivery time, and confirms the initial moment of scheduling based on said first delivery time;
In sum, under the prior art, the present invention has provided a kind of uplink dispatch method; A uplink scheduling signaling delivery time early in the corresponding uplink scheduling signaling delivery time of each UE that carries out transmitting uplink data at same sub-frame of uplink n, is selected in the base station when realizing; Obtain an initial moment of scheduling in conjunction with local processing delay, and dispatch the initial moment, towards above-mentioned all UE that carry out transmitting uplink data at same sub-frame of uplink n at this; Begin to carry out scheduling operation simultaneously; Then at each self-corresponding up signaling delivery time of each UE, to the uplink scheduling signaling of each UE transmission sub-frame of uplink n, like this; In Rel-11 and later release; Send even carry out the dispatch that each UE of transmitting uplink data carries out upstream data with reference to different TDD uplink-downlink configuration at same sub-frame of uplink n, its corresponding uplink scheduling process also can be consistent with the scheduling mode of existing system before, thereby reduces the execution complexity of uplink scheduling in the LTE-A TDD system; And then can better carry out resource allocation according to channel condition, improve systematic function.
Obviously, those skilled in the art can carry out various changes and modification to the present invention and not break away from the spirit and scope of the present invention.Like this, belong within the scope of claim of the present invention and equivalent technologies thereof if of the present invention these are revised with modification, then the present invention also is intended to comprise these changes and modification interior.
Claims (10)
1. the dispatching method of a upstream data is characterized in that, comprising:
To carry out a plurality of terminal UE that transfer of data and corresponding uplink scheduling signaling are transmitted in different descending sub frames at same sub-frame of uplink; Receive the pairing TDD uplink-downlink configuration of uplink scheduling signaling according to UE, confirm the uplink scheduling signaling delivery time that each UE is corresponding;
In the delivery time of each the uplink scheduling signaling that obtains, choose and meet the first pre-conditioned delivery time, and confirm the initial moment of scheduling based on said first delivery time;
In the initial moment of said scheduling said a plurality of UE are begun the operation dispatching operation simultaneously, and, send the uplink scheduling signaling that the said same sub-frame of uplink of scheduling carries out transfer of data to corresponding UE respectively at the corresponding uplink scheduling signaling delivery time of each UE.
2. the method for claim 1 is characterized in that, said UE receives the pairing TDD uplink-downlink configuration of uplink scheduling signaling, is the TDD uplink-downlink configuration by the system information notice; Perhaps, be a TDD uplink-downlink configuration by the high-level signaling configuration; Perhaps, a TDD uplink-downlink configuration for confirming according to pre-defined rule.
3. the method for claim 1 is characterized in that, and is said in the delivery time of each the uplink scheduling signaling that obtains, and chooses to meet the first pre-conditioned delivery time, comprising:
In the delivery time of each the uplink scheduling signaling that obtains, time delivery time is the earliest confirmed as said first delivery time.
4. like each described method of claim 1-3, it is characterized in that, confirm the initial moment of scheduling, comprising based on said first delivery time:
Make the interval duration between the initial moment of said scheduling and said first delivery time, be not less than local processing delay.
5. the method for claim 1 is characterized in that, and is said in the delivery time of each the uplink scheduling signaling that obtains, and chooses to meet the first pre-conditioned delivery time, and confirms the initial moment of scheduling based on said first delivery time, comprising:
To the pairing uplink scheduling signaling of the different UEs on same carrier wave delivery time, choose and meet the first pre-conditioned delivery time, and confirm the corresponding initial moment of scheduling of the above sub-frame of uplink of this carrier wave based on said first delivery time; Perhaps,
To same UE respectively corresponding uplink scheduling signaling delivery time on a plurality of carrier waves, choose and meet the first pre-conditioned delivery time, and confirm the corresponding initial moment of scheduling of the above sub-frame of uplink of said a plurality of carrier wave based on said first delivery time; Perhaps,
To the respectively corresponding uplink scheduling signaling delivery time of the different UEs on a plurality of carrier waves, choose and meet the first pre-conditioned delivery time, and confirm the corresponding initial moment of scheduling of the above sub-frame of uplink of said a plurality of carrier wave based on said first delivery time.
6. the dispatching device of a upstream data is characterized in that, comprising:
First confirms the unit; Be used for to carry out a plurality of terminal UE that transfer of data and corresponding uplink scheduling signaling are transmitted at different descending sub frames at same sub-frame of uplink; Receive the pairing TDD uplink-downlink configuration of uplink scheduling signaling according to UE, confirm the uplink scheduling signaling delivery time that each UE is corresponding;
Second confirms the unit, is used for the delivery time in each the uplink scheduling signaling that obtains, and chooses to meet the first pre-conditioned delivery time, and confirms the initial moment of scheduling based on said first delivery time;
Main control unit; Be used for said a plurality of UE being begun the operation dispatching operation simultaneously in the initial moment of said scheduling; And, send uplink scheduling signaling in order to schedule data transmission on said same sub-frame of uplink to corresponding UE respectively at the corresponding uplink scheduling signaling delivery time of each UE.
7. device as claimed in claim 6 is characterized in that, said first confirms that it is the TDD uplink-downlink configuration by the system information notice that each UE that adopts the unit receives the pairing TDD uplink-downlink configuration of uplink scheduling signaling; Perhaps, be a TDD uplink-downlink configuration by the high-level signaling configuration; Perhaps, a TDD uplink-downlink configuration for confirming according to pre-defined rule.
8. device as claimed in claim 6 is characterized in that, said second confirms the unit in the delivery time of each the uplink scheduling signaling that obtains, and chooses to meet the first pre-conditioned delivery time, comprising:
In the delivery time of each the uplink scheduling signaling that obtains, time delivery time is the earliest confirmed as said first delivery time.
9. like each described device of claim 6-8, it is characterized in that said second confirms that the unit based on the said first delivery time initial moment of definite scheduling, comprising:
Make the interval duration between the initial moment of said scheduling and said first delivery time, be not less than local processing delay.
10. device as claimed in claim 6; It is characterized in that said second confirms the unit in the delivery time of each the uplink scheduling signaling that obtains, choose and meet the first pre-conditioned delivery time; And, comprising based on the said first delivery time initial moment of definite scheduling:
To the pairing uplink scheduling signaling of the different UEs on same carrier wave delivery time, choose and meet the first pre-conditioned delivery time, and confirm the corresponding initial moment of scheduling of the above sub-frame of uplink of this carrier wave based on said first delivery time; Perhaps,
To same UE respectively corresponding uplink scheduling signaling delivery time on a plurality of carrier waves, choose and meet the first pre-conditioned delivery time, and, confirm the corresponding initial moment of scheduling of the above sub-frame of uplink of said a plurality of carrier wave based on said first delivery time; Perhaps,
To the respectively corresponding uplink scheduling signaling delivery time of the different UEs on a plurality of carrier waves, choose and meet the first pre-conditioned delivery time, and, confirm the corresponding initial moment of scheduling of the above sub-frame of uplink of said a plurality of carrier wave based on said first delivery time.
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