CN103117840B

CN103117840B - Realize the method and apparatus of hybrid automatic repeat-request

Info

Publication number: CN103117840B
Application number: CN201110363753.5A
Authority: CN
Inventors: 李迎阳
Original assignee: Huawei Device Co Ltd
Current assignee: Huawei Device Co Ltd
Priority date: 2011-11-16
Filing date: 2011-11-16
Publication date: 2015-11-25
Anticipated expiration: 2031-11-16
Also published as: CN103117840A

Abstract

Embodiments provide a kind of method and apparatus realizing hybrid automatic repeat-request.The method comprises: when the subframe of the reference uplink-downlink configuration corresponding with the conflict descending sub frame of secondary community is sub-frame of uplink, determines the feedback timing with reference at least one descending sub frame contiguous with this sub-frame of uplink in uplink-downlink configuration; According to the feedback timing of at least one descending sub frame, determine the feedback timing of descending sub frame on main plot that conflict, the uplink-downlink configuration of main plot is different from the uplink-downlink configuration of time community, and the descending sub frame of main plot is the subset of the descending sub frame with reference to uplink-downlink configuration; Send on main plot according to feedback timing or receive the feedback information of conflict descending sub frame.The present invention can when the subframe of the reference uplink-downlink configuration corresponding with conflict descending sub frame be sub-frame of uplink, using the feedback timing of the feedback of the descending sub frame contiguous with the sub-frame of uplink with reference to uplink-downlink configuration timing as the descending sub frame that conflicts, thus effectively on PCell, send uplink feedback.

Description

Realize the method and apparatus of hybrid automatic repeat-request

Technical field

The embodiment of the present invention relates to field communication technical field, and more specifically, relates to the method and apparatus that one realizes hybrid automatic repeat-request (HARQ, HybridAutomaticRepeatRequest).

Background technology

At Long Term Evolution (LTE, LongTermEvolution) in system, base station (eNB, EvolvedNodeB) scheduling user's set (UE, UserEquipment) minimum interval is a subframe, Physical Downlink Control Channel (the PDCCH of the UE dispatched by eNB can be comprised in a subframe, PhysicalDownlinkControlChannel), PDCCH can be descending scheduling mandate (DL_grant, Downlink_grant or uplink scheduling authorization (UL_grant, Uplink_grant).Wherein, DL_grant or UL_grant that eNB sends carries instruction Physical Downlink Shared Channel (PDSCH respectively, or the schedule information of Physical Uplink Shared Channel (PUSCH, PhysicalUplinkSharedChannel) PhysicalDownlinkSharedChannel).For time division duplex (TimeDivisionDuplexing, TDD) in system, at employing hybrid automatic repeat-request (HARQ, when HybridAutomaticRepeatRequest) transmitting data, UE can after this subframe at least the 4th subframe or feed back this PDSCH corresponding positive acknowledgement/Negative Acknowledgement (ACK/NACK afterwards, ACKnowledgement/Negative-ACKnowledgement) message, concrete sequential is pre-configured, the channel resource of this ACK/NACK is and the control channel unit (CCE shared by above-mentioned PDCCH, ControlChannelElement) label is corresponding.If extended meeting PDCCH comes to UE Schedule retransmission bag after UE feeds back NACK, eNB.

In LTE version 10, introduce carrier aggregation (CA, CarrierAggregation) technology.For TDD system, in LTE version 10, suppose that each community of CA adopts identical TDD uplink-downlink configuration, thus work can be carried out according to the HARQ timing relationship of the TDD uplink-downlink configuration of definition in LTE version 8 in each community.In LTE version 10, specify that to the ACK/NACK feedback information of the PDSCH of each community be all concentrate on main plot (PCell, PrimaryCell) upper transmission, which ensure that the single-carrier property of upward signal, also simplify the power control to upward signal simultaneously.

In LTE version 11, for TDD system, consider and the coexistence problems with existing system consider the demands such as heterogeneous network simultaneously, need the different processing method of uplink-downlink configuration of the multiple communities studying CA.Such as, PCell have employed uplink-downlink configuration 1, and secondary community (SCell, SecondaryCell) have employed uplink-downlink configuration 2.To some subframe, the duplex directions of PCell with SCell is consistent, and the subframe special to some, the duplex directions of Liang Ge community is different.To the different situation of uplink-downlink configuration of the Liang Ge community of above-mentioned CA, in LTE version 10, the timing method of the ACK/NACK to PDSCH of definition is inapplicable.A kind of existing method is the uplink ACK/NACK of corresponding descending sub frame is determined in each community transmission position according to the timing relationship of definition in its each comfortable LTE version 8.But, when the sub-frame of uplink number of PCell is less than the sub-frame of uplink number of SCell, the position of the transmission ACK/NACK found according to the timing relationship of SCell may be the descending sub frame of PCell, therefore, this kind of uplink ACK/nack message of SCell cannot be sent on PCell.

Therefore, in the different situation of the uplink-downlink configuration of PCell and SCell of CA, cannot effectively utilize PCell to send the uplink feedback of SCell.

Summary of the invention

The embodiment of the present invention provides a kind of method and apparatus realizing hybrid automatic repeat-request, can effectively utilize PCell to send the uplink feedback of SCell.

On the one hand, provide a kind of method realizing hybrid automatic repeat-request, comprise: when the subframe of the reference uplink-downlink configuration corresponding with the conflict descending sub frame of secondary community is sub-frame of uplink, determine the feedback timing of at least one descending sub frame contiguous with this sub-frame of uplink in this reference uplink-downlink configuration; According to the feedback timing of at least one descending sub frame above-mentioned, determine the feedback timing of descending sub frame on main plot that conflict, wherein the uplink-downlink configuration of this main plot is different from the uplink-downlink configuration of this community, and the descending sub frame of this main plot is the subset of the descending sub frame of this reference uplink-downlink configuration; According to the feedback timing of determined conflict descending sub frame on main plot, this main plot sends or receives the feedback information of this conflict descending sub frame.

On the other hand, provide a kind of equipment realizing hybrid automatic repeat-request, comprise: processor, for when the subframe of the reference uplink-downlink configuration corresponding with the conflict descending sub frame of secondary community is sub-frame of uplink, determine the feedback timing of at least one descending sub frame contiguous with this sub-frame of uplink in this reference uplink-downlink configuration; And for the feedback timing according at least one descending sub frame above-mentioned, determine the feedback timing of descending sub frame on main plot that conflict, wherein the uplink-downlink configuration of this main plot is different from the uplink-downlink configuration of this community, and the descending sub frame of this main plot is the subset of the descending sub frame of this reference uplink-downlink configuration; Transmitter, for according to the feedback timing of determined described conflict descending sub frame on main plot, described main plot sends the feedback information of described conflict descending sub frame.

On the other hand, provide a kind of base station, comprise: processor, for when the subframe of the reference uplink-downlink configuration corresponding with the conflict descending sub frame of secondary community is sub-frame of uplink, determine the feedback timing of at least one descending sub frame contiguous with this sub-frame of uplink in this reference uplink-downlink configuration; And for the feedback timing according at least one descending sub frame above-mentioned, determine the feedback timing of this conflict descending sub frame on main plot, wherein the uplink-downlink configuration of this main plot is different from the uplink-downlink configuration of this community, and the descending sub frame of this main plot is the subset of the descending sub frame of this reference uplink-downlink configuration; And transceiver, for according to the feedback timing of determined described conflict descending sub frame on main plot, described main plot receives the feedback information of this conflict descending sub frame.

Can when the subframe of the reference uplink-downlink configuration corresponding with the conflict descending sub frame of SCell be sub-frame of uplink according to embodiments of the invention, adopt the timing of the feedback of the descending sub frame contiguous with this sub-frame of uplink with reference to uplink-downlink configuration as the feedback timing of descending sub frame on PCell that conflict, thus effectively can send the uplink feedback of SCell on PCell.

Accompanying drawing explanation

In order to be illustrated more clearly in the technical scheme of the embodiment of the present invention, be briefly described to the accompanying drawing used required in embodiment or description of the prior art below, apparently, accompanying drawing in the following describes is only some embodiments of the present invention, for those of ordinary skill in the art, under the prerequisite not paying creative work, other accompanying drawing can also be obtained according to these accompanying drawings.

Fig. 1 is the schematic diagram of the uplink-downlink configuration of PCell and SCell.

Fig. 2 A is the method realizing HARQ according to an embodiment of the invention.

Fig. 2 B is the schematic diagram of the uplink-downlink configuration of PCell and SCell according to an embodiment of the invention.

Fig. 3 A is the schematic diagram realizing the process of HARQ according to an embodiment of the invention.

Fig. 3 B is the schematic diagram of the uplink-downlink configuration of PCell and SCell according to an embodiment of the invention.

Fig. 4 A is the schematic diagram realizing the process of HARQ according to another embodiment of the present invention.

Fig. 4 B is the schematic diagram of the uplink-downlink configuration of PCell and SCell according to another embodiment of the present invention.

Fig. 5 A is the schematic diagram realizing the process of HARQ according to another embodiment of the present invention.

Fig. 5 B is the schematic diagram of the uplink-downlink configuration of PCell and SCell according to another embodiment of the present invention.

Fig. 6 is the structural representation of subscriber equipment according to an embodiment of the invention.

Fig. 7 is the structural representation of base station according to an embodiment of the invention.

Embodiment

Below in conjunction with the accompanying drawing in the embodiment of the present invention, be clearly and completely described the technical scheme in the embodiment of the present invention, obviously, described embodiment is the present invention's part embodiment, instead of whole embodiments.Based on the embodiment in the present invention, those of ordinary skill in the art, not making the every other embodiment obtained under creative work prerequisite, belong to the scope of protection of the invention.

Should understand, technical scheme of the present invention can be applied to various communication system, such as: global system for mobile telecommunications (GSM, GlobalSystemofMobilecommunication) system, code division multiple access (CDMA, CodeDivisionMultipleAccess) system, Wideband Code Division Multiple Access (WCDMA) (WCDMA, WidebandCodeDivisionMultipleAccess) system, GPRS (GPRS, GeneralPacketRadioService), LTE system, advanced Long Term Evolution (LTE-A, Advancedlongtermevolution) system, universal mobile telecommunications system (UMTS, UniversalMobileTelecommunicationSystem) etc.The embodiment of the present invention will be described for LTE network and/or LTA-A network, but the embodiment of the present invention is not limited to this.

Will also be understood that, in embodiments of the present invention, terminal also can be referred to as subscriber equipment (UE, UserEquipment), travelling carriage (MS, MobileStation), mobile terminal (MobileTerminal) etc., this terminal can through wireless access network (RAN, RadioAccessNetwork) communicate with one or more core net, such as, terminal can be mobile phone (or being called " honeycomb " phone), there is the computer etc. of communication function, such as, terminal can also be portable, pocket, hand-hold type, built-in computer or vehicle-mounted mobile device.

Should also be understood that in embodiments of the present invention, base station can be the base station (BTS in GSM, BaseTransceiverStation), also can be the base station (NB, NodeB) in WCDMA, can also be evolved base station (eNB or eNodeB in LTE, EvolutionalNodeB), or access point (AP, AccessPoint), the embodiment of the present invention does not limit, but for convenience of description, following embodiment will be described for eNB.

According to existing LTE technology, the community of base station is corresponding with carrier wave, and therefore, PCell with SCell of the CA that all embodiments of the present invention describe is corresponding with the main carrier of CA and auxiliary carrier wave respectively.

Fig. 1 is the schematic diagram of the uplink-downlink configuration of PCell and SCell.As shown in Figure 1, PCell have employed uplink-downlink configuration 1, SCell have employed uplink-downlink configuration 2, wherein D represents descending sub frame, and U represents sub-frame of uplink, and S represents transfer point, S can be used for transmitting downlink business and carrying out multi-upstream access, but can not uplink service be transmitted, propose the method for the ACK/NACK timing of process downlink data according to embodiments of the invention, so S-phase is worked as in descending sub frame.The subframe 0 of this Liang Ge community is all descending sub frame, and the subframe 2 of this Liang Ge community is all sub-frame of uplink, and for subframe 3 and subframe 8, the duplex directions of this Liang Ge community is different.For convenience, in an embodiment of the present invention, the different subframe of duplex directions of this Liang Ge community is called as conflict subframe.

In order to the uplink feedback ACK/NACK utilizing PCell to send the PDSCH of SCell in the different situation of the uplink-downlink configuration of PCell and SCell, can independent of the uplink-downlink configuration of PCell and SCell, arrange the uplink-downlink configuration that is specifically designed to the timing relationship determining the uplink feedback that PDSCH is corresponding, this uplink-downlink configuration can be different from the uplink-downlink configuration of PCell and SCell.Still for Fig. 1, can configuration UE according to uplink-downlink configuration 5 (according to the regulation of LTE version 8, subframe 3 is only had to be sub-frame of uplink in uplink-downlink configuration 5) determine the timing relationship of the uplink feedback of the PDSCH of SCell, namely the uplink feedback of all PDSCH of PCell and SCell all sends in subframe 3.Adopt in this way, although PCell has 4 sub-frame of uplink in a frame, UE in fact only transmission feedback signal in a sub-frame of uplink (i.e. subframe 3) wherein.Therefore, the feedback load of each sub-frame of uplink is very uneven, and it result in the time delay of the HARQ transmission of PDSCH larger simultaneously.

It should be noted that, the different situation of uplink-downlink configuration of PCell with SCell that embodiments of the invention are mentioned refers to that the duplex directions of the corresponding subframe of the part of PCell with SCell is different.

Fig. 2 A is the method realizing HARQ according to an embodiment of the invention.The method of Fig. 2 A can be performed by base station or subscriber equipment.

210, when the subframe of the reference uplink-downlink configuration corresponding with the conflict descending sub frame of SCell is sub-frame of uplink, determine the feedback timing of at least one descending sub frame contiguous with this sub-frame of uplink in this reference uplink-downlink configuration.Such as, this conflict descending sub frame can have one or more on secondary community.This conflict descending sub frame represents that the subframe of the main plot that this conflict descending sub frame is corresponding is sub-frame of uplink.

At least one can be had with reference to uplink-downlink configuration, which kind of uplink-downlink configuration base station or UE adopt can be arranged by high-level signaling as with reference to uplink-downlink configuration, such as, can be arranged by broadcast signaling, or can be arranged by wireless heterogeneous networks (RadioResourceControl, RRC) signaling.Alternatively, above-mentioned also can direct predefine in a standard with reference to uplink-downlink configuration, namely define respectively with reference to uplink-downlink configuration according to the combination of the uplink-downlink configuration of often kind of PCell and SCell.Especially, this can be predefined as the uplink-downlink configuration of Pcell with reference to uplink-downlink configuration.

Above-mentioned can be descending sub frame nearest before this sub-frame of uplink and/or below with reference at least one descending sub frame contiguous with above-mentioned sub-frame of uplink in uplink-downlink configuration, be not limited to this according to embodiments of the invention, at least one descending sub frame above-mentioned also can be descending sub frame nearer before this sub-frame of uplink and/or below.Feedback (ACK/NACK) timing of at least one descending sub frame contiguous with this sub-frame of uplink in this reference uplink-downlink configuration can be default feedback timing, such as, can be in LTE version 8 definition uplink-downlink configuration descending sub frame feedback timing.

220, according to the feedback timing of at least one descending sub frame above-mentioned, determine the feedback timing of above-mentioned conflict descending sub frame on PCell, wherein the uplink-downlink configuration of this PCell is different from the uplink-downlink configuration of this SCell, and the descending sub frame of this PCell is the subset of the descending sub frame of this reference uplink-downlink configuration.

Such as, the descending sub frame of this PCell is that the subset of the descending sub frame of this reference uplink-downlink configuration means that each descending sub frame of this PCell can find corresponding feedback timing according to the feedback timing of the corresponding descending sub frame in this reference uplink-downlink configuration.In other words, this sub-frame of uplink with reference to uplink-downlink configuration can be a subset of the sub-frame of uplink of PCell, therefore, PCell necessarily exists available sub-frame of uplink for transmitting the feedback information determining transmission according to the timing with reference to uplink-downlink configuration.

When the subframe of the reference uplink-downlink configuration corresponding with the conflict descending sub frame of SCell is sub-frame of uplink, the conflict descending sub frame of SCell cannot directly according to determining the uplink feedback timing on main plot with reference to sub-frame of uplink corresponding with it in uplink-downlink configuration, also do not need collocating uplink to feed back because this sub-frame of uplink does not configure, the descending sub frame that namely conflicts conflicts with this sub-frame of uplink.According to embodiments of the invention, the conflict descending sub frame of SCell can the feedback timing of the multiplexing descending sub frame adjacent with this sub-frame of uplink with reference to uplink-downlink configuration, and as seen from the above description, descending sub frame due to this PCell is the subset of the descending sub frame of this reference uplink-downlink configuration, so according to the feedback timing with reference to uplink-downlink configuration, PCell necessarily exists the feedback information of available corresponding sub-frame of uplink for transmission collision descending sub frame, thus the uplink feedback of the conflict descending sub frame of SCell can be sent on PCell.

230, send on above-mentioned main plot according to the feedback timing of determined described conflict descending sub frame on main plot or receive the feedback information of above-mentioned conflict descending sub frame.

Such as, when the method for Fig. 2 A is performed by base station, on above-mentioned main plot, received the feedback information of above-mentioned conflict descending sub frame according to above-mentioned feedback timing by base station.When the method for Fig. 2 A is performed by subscriber equipment, on above-mentioned main plot, sent the feedback information of above-mentioned conflict descending sub frame according to above-mentioned feedback timing by subscriber equipment.

In addition, because the feedback of the embodiment of the present invention by conflict descending sub frame sends on the sub-frame of uplink nearer apart from this conflict descending sub frame, optimize the time delay of HARQ, and make the feedback load on each sub-frame of uplink balanced.

According to embodiments of the invention, the method for Fig. 2 A is performed by base station or subscriber equipment.Such as, when the method for Fig. 2 A is performed by base station, the feedback timing of the descending sub frame receiving SCell can be determined in base station according to the feedback timing of the above-mentioned descending sub frame with reference to uplink-downlink configuration, and when the method for Fig. 2 A is performed by UE, UE can determine the feedback timing of the descending sub frame sending SCell according to the feedback timing of the above-mentioned descending sub frame with reference to uplink-downlink configuration.

Fig. 2 B is the schematic diagram of the uplink-downlink configuration of PCell and SCell according to an embodiment of the invention.Below in conjunction with Fig. 2 B, the method for Fig. 2 A is described in detail.

See Fig. 2 B, the different situation of the uplink-downlink configuration for PCell and SCell, first can determine that one with reference to uplink-downlink configuration, and determines the feedback timing of PCell and SCell according to this reference uplink-downlink configuration.The sub-frame of uplink of this reference uplink-downlink configuration can be a subset of the sub-frame of uplink of PCell, and in other words, the descending sub frame of PCell is a subset of the descending sub frame of this reference uplink-downlink configuration.Like this, according to the feedback timing relationship that this reference uplink-downlink configuration defines in LTE version 8, the feedback timing determining PCell can be directly applied to, in other words, available sub-frame of uplink is necessarily there is, for transmitting the feedback information of the descending sub frame determining the SCell sent according to the timing of this reference uplink-downlink configuration at PCell.Here, the sub-frame of uplink not limiting reference uplink-downlink configuration is a subset of the sub-frame of uplink of SCell, that is, can there is such conflict subframe, reference uplink-downlink configuration is uplink in this subframe, and SCell is a downlink transfer in this subframe.In addition, the sub-frame of uplink of reference uplink-downlink configuration also can be a superset of the sub-frame of uplink of SCell.

According to embodiments of the invention, in 210, the timing of the feedback of at least one descending sub frame above-mentioned comprises: descending sub frame nearest after this sub-frame of uplink in the first timing of descending sub frame nearest before this sub-frame of uplink in this reference uplink-downlink configuration and/or this reference uplink-downlink configuration second regularly.

The relatively uplink-downlink configuration of reference uplink-downlink configuration and SCell, to those descending sub frames with the SCell do not conflicted with reference to uplink-downlink configuration (namely in this subframe, transmission with reference to uplink-downlink configuration and SCell are all down directions), the feedback timing position with reference to this descending sub frame in uplink-downlink configuration can be used for this descending sub frame of SCell.Two kinds of situations can be divided into the subframe of conflicting with reference to uplink-downlink configuration.The first situation SCell is sub-frame of uplink with reference to uplink-downlink configuration is descending sub frame, because the subframe of this SCell is not used in transmission downlink data, so also just do not need the timing of definition feedback; Or, those subframe position of the upper corresponding descending sub frame with reference to uplink-downlink configuration of vague generalization ground definition SCell all observe the feedback timing with reference to the descending sub frame of uplink-downlink configuration, and this feeds back and regularly can not be used on the SCell sub-frame of uplink of collision position.The second situation SCell is descending sub frame (i.e. above-mentioned conflict descending sub frame) with reference to uplink-downlink configuration is sub-frame of uplink, at this moment according to reference uplink-downlink configuration, can not find the feedback timing position that this SCell descending sub frame position is corresponding, so need the processing method defining this situation.Sub-frame of uplink due to this reference uplink-downlink configuration can be a subset of the sub-frame of uplink of PCell, so the subframe of the Scell conflicted with reference to uplink-downlink configuration is the subframe of conflicting with PCell.Such as, to this conflict descending sub frame be positioned on SCell, a nearest feedback with reference to the descending sub frame of the uplink-downlink configuration timing before this subframe can be determined, be designated as timing A, a nearest feedback with reference to the descending sub frame of the uplink-downlink configuration timing below of this subframe can also be determined, be designated as timing B, then can determine the feedback timing of the conflict descending sub frame of these SCell in the scope that timing A and B determines according to the method for the embodiment of the present invention, here can also weighed time A be first timing, timing B be second timing.

As shown in Figure 2 B, PCell adopts uplink-downlink configuration 0, and SCell adopts uplink-downlink configuration 2, and high-rise configuration PCell and SCell determines the feedback timing of descending sub frame according to the feedback timing with reference to uplink-downlink configuration 1.The descending sub frame of PCell is a subset of the descending sub frame with reference to uplink-downlink configuration, so directly can find the feedback timing of its correspondence; And the conflict descending sub frame 3 of SCell, according to the method according to the embodiment of the present invention, its feedback timing is in the scope of timing A (sub-frame of uplink 7) and regularly B (sub-frame of uplink 8).Certainly, it should be noted that, when the feedback timing selecting conflict descending sub frame, demand fulfillment UE is to the time delay in the processing time of conflict descending sub frame.

According to embodiments of the invention, above-mentioned reference uplink-downlink configuration can be identical with the uplink-downlink configuration of this PCell.

When adopting the uplink-downlink configuration of PCell as during with reference to uplink-downlink configuration, the feedback timing relationship maintaining PCell is constant, this can prevent from obscuring when CA configuration and CA are reshuffled, make full use of all sub-frame of uplink of PCell simultaneously, optimize the time delay of HARQ, and ensure that the feedback load on each sub-frame of uplink is balanced.

Alternatively, as another embodiment, in 220, using the second timing as the feedback timing of descending sub frame on this PCell that conflict.

Such as, base station is arranged by high-level signaling or directly whether predefine using the second timing as the feedback of conflict descending sub frame on this PCell regularly in a standard.

According to embodiments of the invention, when using the second timing as the feedback timing of conflict descending sub frame on this PCell, the feedback of the descending sub frame of this SCell regularly can be determined by such as following table 1:

Table 1

Wherein m is the sequence number with reference to downstream arrangements, n is the call number of the subframe with reference to downstream arrangements, each numerical value corresponding with this n and this m represents with k, and when above-mentioned reference uplink-downlink configuration is m, subframe n is the feedback timing of the descending sub frame n-k of this SCell.

Such as, the conflict descending sub frame of SCell can be sent before feedback timing is the descending sub frame of the reference uplink-downlink configuration of the second timing, like this, the reception process for downlink data is had sufficient time to from the conflict descending sub frame of SCell to the second timing.Detailed description about table 1 is shown in the embodiment of Fig. 3 A, repeats no more here.

Alternatively, as another embodiment, in 220, based on the time delay in the processing time to conflict descending sub frame, select one of the first timing and the second timing as the feedback timing of conflict descending sub frame on this PCell.In other words, from the timing position that the time delay selecting between the first timing and the second timing to meet processing time requirement is minimum.

Such as, base station arrange by high-level signaling or directly in a standard predefine whether select one of the first timing and the second timing as the feedback of conflict descending sub frame on this PCell regularly based on the time delay in the processing time to conflict descending sub frame.

According to embodiments of the invention, when the time delay based on the processing time to conflict descending sub frame selects one of the first timing and the second timing as the feedback timing of conflict descending sub frame on this PCell, the feedback of the descending sub frame of this SCell is regularly determined by following table 2:

Table 2

Such as, meeting under the prerequisite required the processing time of PDSCH, the feedback timing making processing delay minimum in selection timing A and timing B is as the feedback timed sending feedback information of the conflict descending sub frame of SCell.Detailed description about table 2 is shown in the embodiment of Fig. 4 A, repeats no more here.

Alternatively, as another embodiment, in 220, based on the equilibrium of feedback load, select one of the first timing and the second timing as the feedback timing of conflict descending sub frame on this PCell.

Such as, the first timing can be selected as the feedback timing of a conflict descending sub frame on this PCell, and select the second timing as the feedback timing of another conflict descending sub frame on this PCell.Such as, base station arrange by high-level signaling or directly in a standard predefine whether based on one of equilibrium selection first timing and the second timing of feedback load as conflicting the feedback of descending sub frame on this PCell regularly.

According to the embodiment of the present invention, when one of equilibrium selection first timing and the second timing based on feedback load as the feedback of conflict descending sub frame on this PCell regularly, the feedback of the descending sub frame of this SCell is regularly determined by following table 3:

Table 3

Such as, can the first timing and second be selected regularly as the feedback timed sending feedback information of the conflict descending sub frame of SCell when the equilibrium of feedback load on As soon as possible Promising Policy sub-frame of uplink.Detailed description about table 2 is shown in the embodiment of Fig. 4 A, repeats no more here.

Alternatively, as another embodiment, in 220, select following timing once as the feedback timing of conflict descending sub frame on this PCell: the first timing, the second timing, first regularly and second regularly between a timing.

Such as, if also there is the timing of other sub-frame of uplink between the first timing and the second timing, then the arbitrary timing between the first timing with the second timing can be selected as the feedback timing of descending sub frame on PCell that conflict.Alternatively, also can based on selecting a timing as conflicting the feedback of descending sub frame on this PCell regularly from above-mentioned multiple timing to the conflict time delay in processing time of descending sub frame or the principle of feedback load equilibrium.Certainly, when the feedback timing selecting conflict descending sub frame, demand fulfillment UE is to the time delay in the processing time of conflict descending sub frame.

Alternatively, as another embodiment, the method of Fig. 2 A also comprises: when the subframe of the reference uplink-downlink configuration corresponding with the conflict descending sub frame of secondary community is descending sub frame, according to the second feedback timing of the descending sub frame with reference to uplink-downlink configuration, determine the feedback timing of descending sub frame on main plot that conflict; According to the second feedback timing, main plot sends or receives the feedback information of conflict descending sub frame.

According to embodiments of the invention, be also used to indicate with reference to uplink-downlink configuration the duplex directions that above-mentioned conflict descending sub frame configures.

Method of the present invention may be used for the UE supporting full and half duplex.Here full duplex refers to that UE can carry out receiving and sending out in the conflict subframe of above-mentioned PCell and SCell simultaneously.Half-duplex refers to that UE is single in the transmission direction of above-mentioned conflict subframe, namely or receive or send.Arranging of above-mentioned reference uplink-downlink configuration can have nothing to do with the duplex directions selected actual in subframe of conflicting.Or, for only supporting semiduplex UE, also may be used for reference to uplink-downlink configuration indicating the duplex directions configured in above-mentioned conflict subframe.Such as, to the conflict subframe being those PCell and Scell of descending sub frame in reference uplink-downlink configuration, UE receives only downlink data; And to other conflict subframes, its duplex directions can use other signalings to carry out semi-static configuration, or be dynamic-configuration completely.

Method of the present invention can optimize the HARQ transmission in full duplex situation, such as, can using the uplink-downlink configuration of PCell as reference uplink-downlink configuration, thus all sub-frame of uplink taking full advantage of PCell carry out feeding back uplink ACK/NACK information, the time delay of HARQ is shorter, and the feedback load of each sub-frame of uplink is also average.Meanwhile, the UE that the feedback timing method of such optimization full duplex also can promote the use only supports semiduplex situation.UE when half-duplex be perform receive or send can be semi-static configuration also can be Dynamic controlling.

In addition, the present invention also may be used for optimizing semiduplex situation, and still for Fig. 2 B, in fig. 2b, the conflict descending sub frame of PCell and SCell is subframe 3,4,8 and 9, and SCell is downlink transfer in these 4 subframes.According to business demand, suppose base station to wish in subframe 4 and 9 UE can on SCell downlink data receiving, instead of on PCell, send upward signal, to improve downlink peak rates.So base station can configure with reference to uplink-downlink configuration 1 to define HARQ timing.Because are being descending sub frames with reference to subframe 4 and 9 in uplink-downlink configuration 1, so UE thinks that semi-static being configured with in base station performs the downlink data reception on SCell in subframe 4 and 9, thus UE does not need the duplex directions dynamically judging subframe 4 and 9, avoid because judge the performance loss that duplex directions mistake causes.And to conflict descending sub frame 3 and 8, the duplex directions of its reality can be dynamic-configuration.Such as, if the UL_grant timing position of base station uplink in scheduling conflict descending sub frame 3 detects UL_grant, just think that the duplex directions of conflict descending sub frame 3 current reality is up direction; On the contrary, if without any the uplink in signaling scheduling conflict descending sub frame 3, then UE detects DL_grant on conflict descending sub frame 3, thus receives possible downlink data.

According to embodiments of the invention, the feedback channel of conflict descending sub frame can be determine according to the label of the above-mentioned control channel unit corresponding with reference at least one descending sub frame in uplink-downlink configuration.

Such as, adopt across carrier wave across subframe scheduling time, when the descending sub frame that conflicts sends feedback information according to the uplink feedback timing with reference to descending sub frame nearest before sub-frame of uplink corresponding with this conflict descending sub frame in uplink-downlink configuration on above-mentioned PCell, the feedback channel that can imply distribution by the label of the control channel unit corresponding with this nearest descending sub frame sends feedback, namely maximize and use the implicit feedback channel distributed, thus save uplink bandwidth resource.

Alternatively, as another embodiment, the method of Fig. 2 A also comprises: according to the feedback timing of the descending sub frame with reference to uplink-downlink configuration, determine the feedback timing of the non conflicting descending sub frame of SCell on PCell, wherein non conflicting descending sub frame represents that the subframe of the PCell corresponding with non conflicting descending sub frame is descending sub frame; According to the feedback timing of non conflicting descending sub frame on main plot of determined community, main plot sends or receives the feedback information of non conflicting descending sub frame.

Alternatively, as another embodiment, the method for Fig. 2 A also comprises: according to the feedback timing of the descending sub frame with reference to uplink-downlink configuration, determines the feedback timing of the descending sub frame of PCell; According to the feedback timing of the descending sub frame of determined main plot, main plot sends or receives the feedback information of the descending sub frame of main plot.

Below by specific embodiment, the processing procedure determining the feedback timing of conflict descending sub frame between the first timing (timing A) and the second timing (timing B) of the present invention is described.

Fig. 3 A is the schematic diagram realizing the process of HARQ according to an embodiment of the invention.Fig. 3 B is the schematic diagram of the uplink-downlink configuration of PCell and SCell according to an embodiment of the invention.

310, arrange with reference to uplink-downlink configuration.

Uplink-downlink configuration can have multiple (such as, uplink-downlink configuration 0 is had in LTE version 8, 1, 2, 3, 4, 5, 6 totally seven kinds), which kind of uplink-downlink configuration base station or UE specifically adopt can be arranged by high-level signaling as with reference to uplink-downlink configuration, such as, share same with reference in the situation of uplink-downlink configuration in community, can be arranged by broadcast signaling, or when the reference uplink-downlink configuration that different UE can have oneself special, wireless heterogeneous networks (RadioResourceControl can be passed through, RRC) signaling is arranged, such as, the sequence number with reference to uplink-downlink configuration can be represented with 3bit in above-mentioned signaling.Also this seven kinds of uplink-downlink configuration are not limited to according to embodiments of the invention.

Step 310 is optional, above-mentioned also can direct predefine in a standard with reference to uplink-downlink configuration, namely define respectively with reference to uplink-downlink configuration according to the combination of the uplink-downlink configuration of each PCell and SCell.Above-mentioned reference uplink-downlink configuration, the uplink-downlink configuration of PCell and the uplink-downlink configuration of SCell can be selected respectively from above-mentioned seven kinds of uplink-downlink configuration.Especially, this can be predefined as the uplink-downlink configuration of Pcell with reference to uplink-downlink configuration.

Be combined as example with the uplink-downlink configuration shown in Fig. 3 B, when PCell adopts uplink-downlink configuration 0, and during SCell employing uplink-downlink configuration 2, and high-rise configuration is according to determining that with reference to uplink-downlink configuration 1 feedback regularly.

320, according to the feedback timing determining the descending sub frame of reference uplink-downlink configuration nearest after the conflict descending sub frame of SCell with reference to uplink-downlink configuration.

Here conflict descending sub frame refers to the descending sub frame conflicted with the sub-frame of uplink with reference to uplink-downlink configuration of SCell.Such as, in figure 3b, the descending sub frame 3 of SCell conflicts with the sub-frame of uplink 3 with reference to uplink-downlink configuration 1, namely also conflicts with the sub-frame of uplink 3 of PCell.The descending sub frame of reference uplink-downlink configuration nearest after the conflict descending sub frame 3 of SCell is subframe 4, and the timing of the feedback of the descending sub frame 4 that conflicts is sub-frame of uplink 8 (i.e. timing B).The feedback timing of non conflicting descending sub frame can directly according to the timing working of the reference uplink-downlink configuration of the timing of the regulation of employing LTE version 8.

330, using the feedback of the descending sub frame of reference uplink-downlink configuration nearest after the conflict descending sub frame of SCell timing as this conflict descending sub frame on PCell feedback timing.

Here, the timing of the conflict descending sub frame 3 of SCell can the feedback timing of the multiplexing descending sub frame 4 with reference to uplink-downlink configuration, i.e. timing B.In other words, the conflict descending sub frame that can define SCell works according to the timing B in Fig. 3 B.

The form of the feedback timing relationship of all descending sub frames for determining SCell can be obtained according to embodiments of the invention, as shown in table 1.For one with reference to uplink-downlink configuration, above-mentioned table 1 defines the timing position of other 9 subframes except subframe 2.Because according to the regulation of LTE version 8, the subframe 2 of various uplink-downlink configuration is sub-frame of uplink, therefore, there is no need here as subframe 2 defines feedback timing.Above-mentioned timing relationship may be used for all 7 kinds of SCell uplink-downlink configuration, to a concrete SCell uplink-downlink configuration, if certain subframe except subframe 2 is also sub-frame of uplink, although the timing that this subframe is corresponding can be found in table 1, but because this subframe can not send PDSCH, just corresponding feedback information is not needed, so in fact do not use the uplink feedback timing relationship of this subframe yet.When processing feedback information, the binding window of a sub-frame of uplink can be determined exactly according to the descending sub frame listed in table 1, the corresponding size obtaining binding window.In addition, also regulation can remove those actual binding windows being other descending sub frames beyond sub-frame of uplink and forming a sub-frame of uplink, thus obtain actual binding window size.In Table 1, often kind can be called a binding window with reference at least one numerical value k that each sub-frame of uplink of downstream arrangements is corresponding.Below so that the implication of binding window to be described with reference to uplink-downlink configuration 1.Such as, the binding window implication of sub-frame of uplink 8 is: sub-frame of uplink 8 is the descending sub frame 3 (i.e. 8-5=3) of this frame and the feedback timing of descending sub frame 4 (i.e. 8-4=4), and the implication of the binding window of sub-frame of uplink 2 is: sub-frame of uplink 2 is the descending sub frame 5 (i.e. 12-7=5) of previous frame and the feedback timing of descending sub frame 6 (i.e. 12-6=6).

Below with the binding window (5 of sub-frame of uplink 8, 6) for how binding window each in example instruction card 1 obtains: when the subframe 3 of SCell is descending sub frame (such as, when SCell adopts uplink-downlink configuration 2), because be sub-frame of uplink with reference to the subframe 3 of uplink-downlink configuration 1, therefore, the descending sub frame 3 of SCell needs the feedback timing of the multiplexing descending sub frame 4 with reference to uplink-downlink configuration 1 as its feedback timing on PCell, the binding window that can draw sub-frame of uplink 8 is thus (5, 6), namely sub-frame of uplink 8 is simultaneously as the feedback timing of subframe 3 and subframe 4.By that analogy, the binding window of other sub-frame of uplink in table 1 can be drawn, repeat no more here.

In addition, also can define respectively each uplink-downlink configuration as with reference to during uplink-downlink configuration and all 7 kinds of uplink-downlink configuration for the timing relationship of SCell, this form needs at most 49 row, and every provisional capital represents the descending sub frame in the binding window of the reality of SCell when a kind of uplink-downlink configuration combines.As shown in table 4, illustrate only the SCell with reference to uplink-downlink configuration employing uplink-downlink configuration 0 and adopt 7 kinds of situations of uplink-downlink configuration 0,1,2,3,4,5,6 respectively.Similar with reference to other 42 kinds of situations corresponding during uplink-downlink configuration employing 1,2,3,4,5,6, here repeat no more.It should be noted that, the descending sub frame of Pcell is the subset of the descending sub frame with reference to uplink-downlink configuration.

Table 4

340, the feedback timing of other descending sub frame of the SCell do not conflicted with these descending sub frames and the descending sub frame of PCell is determined according to the feedback timing with reference to the descending sub frame configured up and down.

Such as, the feedback timing of these descending sub frames can be the feedback timing of the descending sub frame of the reference uplink-downlink configuration of the timing adopting definition in LTE version 8.

It should be noted that 310 of Fig. 3 A, 320,330 and 340 can be performed by base station or UE.

When 350, UE receives downstream signal on the descending sub frame of PCell and SCell, on PCell, send the uplink feedback information of this downstream signal according to the feedback timing determined.

Such as, above-mentioned downstream signal can be the data by PDSCH transmission.According to the embodiment of the present invention, can ensure that the conflict descending sub frame of SCell sent before feedback timing is the descending sub frame of the reference uplink-downlink configuration of B, that is, the reception process for PDSCH is had sufficient time to from the conflict descending sub frame of SCell to timing position B.

Adopt the scheme of Fig. 3 A, when using the uplink-downlink configuration of PCell as with reference to uplink-downlink configuration time, can ensure that the timing position of the uplink scheduling authorization (Uplink_grant, UL_grant) of the PUSCH of a scheduling uplink frame is no earlier than last descending sub frame of this sub-frame of uplink corresponding descending sub frame binding window.That is, base station is when arranging the UL_DAI in UL_grant (the descending distribution instruction of DownlinkAssignmentIndex) territory, and do not need prediction, wherein UL_DAI is 2bit, is used to indicate the number of descending sub frame in binding window.Time a unique exception occurs in PCell employing configuration 0 and SCell employing configuration 6.Here, PCell adopts configuration 0, and the UL_grant configuring use in 0 does not comprise UL_DAI territory, so a kind of possibility dispatches the information not comprising UL_DAI in the UL_grant of PCell and SCell in this combination of restriction, namely limit the situation that base station only scheduled the PUSCH of SCell, do not use in the UL_grant of SCell and obtain UL_DAI territory; Or still allow to use UL_DAI territory on the PUSCH of SCell, but UL_DAI is defined as the maximum of the dispatching downlink number of subframes of each community; Or UL_DAI is not restricted to above-mentioned maximum, and be just defined as the reference determining coding code book when UE sends ACK/NACK information, the concrete value as UL_DAI is left base station for and is realized.Base station can be predicted the scheduling of downlink data thus be arranged optimized UL_DAI; Base station also can not be predicted, at this moment base station all have sent PDSCH by the descending sub frame conservatively binding window according to the later Scell of UL_grant place subframe and arranges UL_DAI, thus prevents the value arranging UL_DAI large not.The value of UL_DAI realizes relevant in a word.

360, base station receives the uplink feedback information of above-mentioned downstream signal according to the feedback timing determined on PCell.

Still for Fig. 3 B, for the conflict descending sub frame 3 and 4 of SCell, base station receives the feedback information of the downstream signal that the conflict descending sub frame 3 and 4 of SCell sends on the sub-frame of uplink 8 of PCell.For other non conflicting descending sub frame, base station receives the feedback timing of these non conflicting descending sub frames on PCell can directly according to the timing working of the reference uplink-downlink configuration of the timing of the regulation of employing LTE version 8.

In addition, when adopting the uplink-downlink configuration of PCell as during with reference to uplink-downlink configuration, the feedback timing relationship that the program maintains PCell is constant, obscures when this can prevent in CA configuration and reshuffle; The all sub-frame of uplink making full use of PCell optimize the time delay of HARQ, and ensure that the equilibrium of the feedback load on each sub-frame of uplink.And the problem of descending sub frame number in window is bound in the UL_grant prediction avoiding base station scheduling PUSCH to greatest extent.

Fig. 4 A is the schematic diagram realizing the process of HARQ according to another embodiment of the present invention.Fig. 4 B is the schematic diagram of the uplink-downlink configuration according to PCell and SCellSCell that another is implemented of the present invention.

410, arrange with reference to uplink-downlink configuration.Similar with 310 of Fig. 3 A, repeat no more here.

As shown in Figure 4 B, in the fig. 4 embodiment, when PCell adopts uplink-downlink configuration 0, and during SCell employing uplink-downlink configuration 2, and high-rise configuration is according to determining that with reference to uplink-downlink configuration 0 feedback regularly.

420, according to the feedback timing determining the descending sub frame of the reference uplink-downlink configuration that the conflict descending sub frame front and back of SCell is nearest with reference to uplink-downlink configuration.

Here conflict descending sub frame refers to the descending sub frame conflicted with the sub-frame of uplink with reference to uplink-downlink configuration of SCell.Such as, in figure 4b, the descending sub frame 3 and 4 of SCell conflicts with the sub-frame of uplink 3 and 4 with reference to uplink-downlink configuration 1 respectively, namely also conflicts with the sub-frame of uplink 3 and 4 of PCell.The descending sub frame of reference uplink-downlink configuration nearest before the conflict descending sub frame 3 and 4 of SCell is subframe 1, and the descending sub frame of reference uplink-downlink configuration nearest after the descending sub frame 3 and 4 that conflicts is subframe 5, the feedback timing of descending sub frame 1 and 5 is respectively sub-frame of uplink 7 (i.e. timing A) and 9 (i.e. timing B).

430, UE is under the prerequisite meeting the processing time, and the principle that the time delay based on the processing time of the descending sub frame that conflicts to SCell is minimum, selects one of timing A and timing B as the feedback timing of this conflict descending sub frame on PCell.

According to embodiments of the invention, the timing of the conflict descending sub frame 3 of SCell is multiplexing with reference to the feedback timing of the descending sub frame 1 of uplink-downlink configuration, i.e. timing A (sub-frame of uplink 7), the feedback timing of the descending sub frame 5 of reference uplink-downlink configuration that the timing of the conflict descending sub frame 4 of SCell is simultaneously multiplexing, i.e. timing B (sub-frame of uplink 9), so that the time delay of UE to the processing time of descending sub frame 3 or 4 is minimum.

According to reference to uplink-downlink configuration, the form of the ACK/NACK timing relationship of all descending sub frames determining SCell can be obtained.Here, to one with reference to uplink-downlink configuration, table 2 defines the timing position of other 9 subframes except subframe 2.This timing relationship may be used for all 7 kinds of SCell uplink-downlink configuration, to a concrete SCell uplink-downlink configuration, if certain subframe except subframe 2 is also sub-frame of uplink, although the timing that this subframe is corresponding can be found in table 2, but because this subframe can not send PDSCH, just corresponding ACK/NACK information is not needed, so in fact do not use the uplink feedback timing of this subframe yet.When processing ACK/NACK information, the binding window of a sub-frame of uplink can be determined exactly according to the descending sub frame listed in table 2, the corresponding size obtaining binding window; Or, also regulation can remove those actual binding windows being other descending sub frames beyond sub-frame of uplink and forming a sub-frame of uplink, thus obtain the binding window size of time.

Table 2 is similar with table 1, and difference is, when determining the binding window of each sub-frame of uplink, is based on the minimum principle of the time delay in the processing time to conflict descending sub frame.Still for the sub-frame of uplink 8 with reference to downstream arrangements 1, in this case, the binding window of sub-frame of uplink 8 only has 4, namely sub-frame of uplink 8 is just as the feedback timing of the descending sub frame 4 (i.e. 8-4=4) of this frame, this is because based on the minimum principle of the time delay in the processing time to subframe, sub-frame of uplink 7 should be selected but not sub-frame of uplink 8 as subframe 3 feedback timing, this make descending sub frame arrive its feedback between time delay minimum.By that analogy, the binding window of other sub-frame of uplink in table can be drawn, repeat no more here.

In addition, also can define respectively each uplink-downlink configuration for reference to during uplink-downlink configuration and every other 7 kinds of uplink-downlink configuration for the timing relationship of SCell, this form needs at most 49 row, and every provisional capital represents the descending sub frame in the binding window of the reality of SCell when a kind of uplink-downlink configuration combines.Similarly, see table 4, can repeat no more here.

440, the feedback timing of other descending sub frame of the SCell do not conflicted with these descending sub frames and the descending sub frame of PCell is determined according to the feedback timing with reference to the descending sub frame configured up and down.

It should be noted that, 410,420,430 and 440 of Fig. 4 A can be performed by base station or UE.

When 450, UE receives downstream signal on the descending sub frame of PCell and SCell, on PCell, send the uplink feedback information of this downstream signal according to the feedback timing determined.

Such as, above-mentioned downstream signal can be the data by PDSCH transmission.According to the embodiment of the present invention, the conflict descending sub frame of SCell can select the feedback timed sending feedback information making processing delay minimum in timing A and timing B.Namely the timing position that the time delay that meet processing time of the feedback information of the conflict descending sub frame of SCell between timing A and B is minimum sends.In LTE, suppose that PDSCH sends at descending sub frame n, then ACK/NACK can send at sub-frame of uplink n+4 the earliest.The feedback information of the PDSCH that UE receives on the conflict descending sub frame 3 of SCell sends on timing A (sub-frame of uplink 7) on PCell, and the PDSCH that UE receives on the conflict descending sub frame 4 of SCell sends on timing B (sub-frame of uplink 9) on PCell, thus can make the time delay of UE to the processing time of subframe 3 and subframe 4 can be relatively little.

Adopting this method, when adopting across carrier wave across subframe scheduling, when adopting channel selection feedback feedback information, can maximize and using the implicit feedback channel distributed, thus saving uplink bandwidth resource.For Fig. 4 B, this problem is described, according to the method for version 8, PCell is the feedback channel of the PUCCH format 1a/1b that the CCE correspondence distribution in descending sub frame 1 is implied on sub-frame of uplink 7, suppose that the conflict descending sub frame 3 of SCell is also in the subframe 1 of PCell across carrier wave across subframe scheduling, then also can imply conflict descending sub frame 3 and obtain corresponding PUCCH format 1a/1b channel, thus the ACK/NACK channel avoiding additional allocation to show.

460, base station receives the uplink feedback information of above-mentioned downstream signal according to the feedback timing determined on PCell.

Still for Fig. 4 B, for the conflict descending sub frame 3 and 4 of SCell, base station receives the feedback information of the downstream signal that the conflict descending sub frame 3 and 4 of SCell sends on the sub-frame of uplink 7 and 9 of PCell.For other non conflicting descending sub frame, base station receives the feedback timing of these non conflicting descending sub frames on PCell can directly according to the timing working of the reference uplink-downlink configuration of the timing of the regulation of employing LTE version 8.

In addition, when adopting the uplink-downlink configuration of PCell as during with reference to uplink-downlink configuration, the ACK/NACK timing relationship that the program maintains PCell is constant, obscures when this can prevent in CA configuration and reshuffle; The all sub-frame of uplink making full use of PCell optimize the time delay of HARQ, comprise the time delay between descending sub frame to its ACK/NACK, and ensure that the equilibrium of the feedback load on each sub-frame of uplink.When adopting across carrier wave across subframe scheduling, maximizing and using the implicit feedback channel distributed, thus saving uplink bandwidth resource.

Fig. 5 A is the schematic diagram realizing the process of HARQ according to another embodiment of the present invention.Fig. 5 B is the schematic diagram of the uplink-downlink configuration of PCell and SCell according to another embodiment of the present invention.

510, arrange with reference to uplink-downlink configuration.Similar with 310 of Fig. 3 A, repeat no more here.

As shown in Figure 5 B, in the embodiment of Fig. 5 B, when PCell adopts uplink-downlink configuration 1, and SCell adopts uplink-downlink configuration 3 and high-rise configuration according to determining feedback timing with reference to uplink-downlink configuration 1.

520, according to the feedback timing determining the descending sub frame of the reference uplink-downlink configuration that the conflict descending sub frame front and back of SCell is nearest with reference to uplink-downlink configuration.

Here conflict descending sub frame refers to the descending sub frame conflicted with the sub-frame of uplink with reference to uplink-downlink configuration of SCell.Such as, in figure 5b, the descending sub frame 7 and 8 of SCell conflicts with the sub-frame of uplink 7 and 8 with reference to uplink-downlink configuration 1 respectively, namely also conflicts with the sub-frame of uplink 7 and 8 of PCell.The descending sub frame of reference uplink-downlink configuration nearest before this conflict descending sub frame 7 and 8 of SCell is subframe 6, and the descending sub frame of reference uplink-downlink configuration nearest after the descending sub frame 7 and 8 that conflicts is subframe 9, the feedback timing of descending sub frame 6 and 9 is respectively sub-frame of uplink 2 (i.e. timing A) and 3 (i.e. the timing B) of previous frame.

530, UE, based on the principle of feedback load equilibrium, selects one of timing A and timing B as the feedback timing of conflict descending sub frame on PCell.

According to embodiments of the invention, when the feedback information of the conflict descending sub frame of SCell distributes between timing A and B, under the condition meeting processing time (such as, UE needs the processing time of 3 subframes to decoding data), meet load balancing as much as possible.The timing of the conflict descending sub frame 7 of SCell is multiplexing with reference to the feedback timing of the descending sub frame 6 of uplink-downlink configuration, i.e. timing A (sub-frame of uplink 2), the feedback timing of the descending sub frame 9 of reference uplink-downlink configuration that the timing of the conflict descending sub frame 8 of SCell is simultaneously multiplexing, i.e. timing B (sub-frame of uplink 3).

According to reference to uplink-downlink configuration, the form of the feedback timing relationship of all descending sub frames determining SCell can be obtained.Here, to one with reference to uplink-downlink configuration, table 3 defines the timing position of other 9 subframes except subframe 2.This timing relationship may be used for all 7 kinds of SCell uplink-downlink configuration, to a concrete SCell uplink-downlink configuration, if certain subframe except subframe 2 is also sub-frame of uplink, although the timing that this subframe is corresponding can be found in table 3, but because this subframe can not send PDSCH, just corresponding ACK/NACK information is not needed, so in fact do not use the uplink feedback timing relationship of this subframe yet.When processing ACK/NACK information, the binding window of a sub-frame of uplink can be determined exactly according to the descending sub frame listed in table 3, correspondingly obtaining the size of binding window; Or, also regulation can remove those actual binding windows being other descending sub frames beyond sub-frame of uplink and forming a sub-frame of uplink, thus obtain actual binding window size.

Table 3 is similar with table 1, and difference is, when determining the binding window of each sub-frame of uplink, is the principle of the equilibrium based on feedback load.Here be described for the sub-frame of uplink 2 of reference uplink-downlink configuration 1 and sub-frame of uplink 3, sub-frame of uplink 2 is the feedback timing of the descending sub frame 5 (i.e. 12-7) of previous frame, 6 (i.e. 12-6), 7 (i.e. 12-5), and sub-frame of uplink 3 be the feedback of the descending sub frame 8 (i.e. 13-5) of previous frame and 9 (i.e. 13-4) regularly.In other words, when the subframe 7,8 of SCell is descending sub frame (such as, when SCell adopts uplink-downlink configuration 3), according to embodiments of the invention using the feedback timing of sub-frame of uplink 2 as the descending sub frame 7 of SCell, and using sub-frame of uplink 3 as feeding back downlink subframe 8 feedback timing, so that the feedback load realized on the sub-frame of uplink of PCel is balanced, thus improve the covering that up direction sends ack/nack signal.By that analogy, the binding window of other sub-frame of uplink in table can be drawn, repeat no more here.

In addition, also can define respectively each uplink-downlink configuration for reference to during uplink-downlink configuration and every other 7 kinds of uplink-downlink configuration for the timing relationship of SCell, this form needs at most 49 row, and every provisional capital represents the descending sub frame of the binding window of the reality of SCell when a kind of uplink-downlink configuration combines.Similarly, see table 4, can repeat no more here.

In table 3, to the situation with reference to uplink-downlink configuration being configuration 0, table 3 is supposed only in version 8, to send ACK/NACK information on the sub-frame of uplink sending ACK/NACK, and namely subframe 3 and 8 is not used in and sends ACK/NACK information.If allow to use subframe 3 and 8, the then available method process as following table 5.

Table 5

540, the feedback timing of other descending sub frame of the SCell do not conflicted with these descending sub frames and the descending sub frame of PCell is determined according to the feedback timing with reference to the descending sub frame configured up and down.

It should be noted that, 510,520,530 and 540 of Fig. 5 A can be performed by base station or UE.

When 550, UE receives downstream signal on the descending sub frame of Pcell and SCell, on PCell, send the uplink feedback information of this downstream signal according to the feedback timing determined.Such as, above-mentioned downstream signal can be the data by PDSCH transmission.According to the embodiment of the present invention, the conflict descending sub frame of SCell can select timing A and timing B as feedback timed sending feedback information when meeting feedback load equilibrium.Such as, in order to load balancing, the feedback information of the PDSCH that the conflict descending sub frame 7 of SCell receives is in the upper transmission of PCell timing A (sub-frame of uplink 2), and the feedback information of the PDSCH that the conflict descending sub frame 8 of SCell receives above sends at PCell timing B (sub-frame of uplink 3).

560, base station receives the uplink feedback information of above-mentioned downstream signal according to the feedback timing determined on PCell.

Still for Fig. 5 B, for the conflict descending sub frame 7 and 8 of SCell, base station receives the feedback information of the downstream signal that the conflict descending sub frame 7 and 8 of SCell sends on the sub-frame of uplink 2 and 3 of PCell.For other non conflicting descending sub frame, base station receives the feedback timing of these non conflicting descending sub frames on PCell can directly according to the timing working of the reference uplink-downlink configuration of the timing of the regulation of employing LTE version 8.

In addition, when adopting the uplink-downlink configuration of PCell as during with reference to uplink-downlink configuration, the ACK/NACK timing relationship that the program maintains PCell is constant, obscures when this can prevent in CA configuration and reshuffle; The all sub-frame of uplink making full use of PCell optimize the time delay of HARQ, comprise the time delay between descending sub frame to its feedback, and ensure that the equilibrium of the feedback load on each sub-frame of uplink, thus improve the covering that up direction sends ack/nack signal.

Described above is the method realizing HARQ according to the embodiment of the present invention, describe the equipment realizing HARQ according to the embodiment of the present invention below in conjunction with Fig. 6.

Fig. 6 is the structural representation of subscriber equipment 600 according to an embodiment of the invention.

Subscriber equipment 600 comprises processor 610 and transceiver 620.Such as, transceiver 620 can be radio-frequency (RF) transceiver.They are connected to each other by bus 630, and such as, processor 610 can be connected with bus, and radio-frequency (RF) transceiver can be connected with bus by input-output apparatus.In at least some implementation of subscriber equipment 600, transceiver 620 receives or sends data, and processor 610 receives the data from transceiver 620, and can perform analysis to these data by mode as described herein.Alternatively, subscriber equipment 600 can also comprise memory 640, for storing above-mentioned data.

Processor 610 is when the subframe of the reference uplink-downlink configuration corresponding with the conflict descending sub frame of SCell is sub-frame of uplink, determine the feedback timing of at least one descending sub frame contiguous with this sub-frame of uplink in this reference uplink-downlink configuration, described conflict descending sub frame represents that the subframe of the main plot that described conflict descending sub frame is corresponding is sub-frame of uplink.Processor 610 is also according to the feedback timing of at least one descending sub frame above-mentioned, determine the feedback timing of descending sub frame on PCell that conflict, wherein the uplink-downlink configuration of this PCell is different from the uplink-downlink configuration of this SCell, and the descending sub frame of this PCell is the subset of the descending sub frame of this reference uplink-downlink configuration.Transceiver 620, for according to the feedback timing of determined described conflict descending sub frame on main plot, described main plot sends the feedback information of described conflict descending sub frame

In addition, because the feedback of the embodiment of the present invention by conflict descending sub frame sends on the sub-frame of uplink nearer apart from this conflict descending sub frame, optimize the time delay of HARQ, and make the equilibrium of the feedback load on each sub-frame of uplink.

According to embodiments of the invention, this reference uplink-downlink configuration is identical with the uplink-downlink configuration of this PCell.

Alternatively, as another embodiment, processor 610, based on the time delay in the processing time to conflict descending sub frame, selects one of the first timing and the second timing as the feedback timing of conflict descending sub frame on this PCell.

According to embodiments of the invention, the timing of the feedback of at least one descending sub frame above-mentioned comprises: descending sub frame nearest after this sub-frame of uplink in the first timing of descending sub frame nearest before this sub-frame of uplink in this reference uplink-downlink configuration and/or this reference uplink-downlink configuration second regularly.

Alternatively, as another embodiment, processor 610 also using the second timing as the feedback of conflict descending sub frame on this PCell regularly.

According to embodiments of the invention, when using the second timing as the feedback timing of conflict descending sub frame on this PCell, the feedback of the descending sub frame of above-mentioned SCell regularly can be determined by above-mentioned table 1.

Alternatively, as another embodiment, processor 610, also based on the time delay in the processing time to conflict descending sub frame, selects one of the first timing and the second timing as the feedback timing of conflict descending sub frame on main plot.

According to embodiments of the invention, when based on to conflict descending sub frame processing time time delay select first timing and second timing one of as described conflict descending sub frame on main plot feedback timing, the descending sub frame of above-mentioned community feedback timing determined by above-mentioned table 2.

Alternatively, as another embodiment, processor 610, also based on the equilibrium of feedback load, selects one of the first timing and the second timing as the feedback timing of conflict descending sub frame on this PCell.

According to embodiments of the invention, when one of equilibrium selection first timing and the second timing based on feedback load as the feedback of conflict descending sub frame on this PCell regularly, the feedback of the descending sub frame above-mentioned community is regularly determined by above-mentioned table 3.

Alternatively, as another embodiment, processor 610 also select following timing once as the feedback timing of conflict descending sub frame on this PCell: the first timing, the second timing, first regularly and second regularly between a timing.

Alternatively, as another embodiment, processor 610 is also when the subframe of the reference uplink-downlink configuration corresponding with the conflict descending sub frame of this SCell is descending sub frame, according to the feedback timing of this descending sub frame of this reference uplink-downlink configuration, determine the second feedback timing of descending sub frame on this PCell that conflict, transceiver 620 also according to the second feedback timing, main plot sends or receives the feedback information of conflict descending sub frame.

Alternatively, as another embodiment, this reference uplink-downlink configuration is also used to indicate the duplex directions that conflict descending sub frame configures.

Alternatively, as another embodiment, processor 610 is also according to the feedback timing of the descending sub frame with reference to uplink-downlink configuration, determine the feedback timing of the non conflicting descending sub frame of time community on main plot, wherein non conflicting descending sub frame represents that the subframe of the main plot corresponding with non conflicting descending sub frame is descending sub frame, transceiver 620 also according to the feedback timing of non conflicting descending sub frame on main plot of determined community, main plot sends the feedback information of non conflicting descending sub frame.

Alternatively, as another embodiment, processor 610 is also according to the feedback timing of the descending sub frame with reference to uplink-downlink configuration, determine the feedback timing of the descending sub frame of main plot, transceiver 620 also according to the feedback timing of the descending sub frame of determined main plot, main plot sends the feedback information of the descending sub frame of main plot.

The operation of the unit of base station 600 and function with reference to the method with Fig. 2 A, in order to avoid repeating, can not repeat them here.

Fig. 7 is the structural representation of base station 700 according to an embodiment of the invention.

Base station 700 comprises processor 710 and transceiver 720.Such as, transceiver 720 can be radio-frequency (RF) transceiver.Processor 710 and transceiver 720 are connected to each other by bus 730, and such as, processor 710 can be connected with bus, and radio-frequency (RF) transceiver can be connected with bus by input-output apparatus.In at least some implementation of base station 700, transceiver 720 receives or sends data, and processor 710 receives the data from transceiver 720, and can perform analysis to these data by mode as described herein.Alternatively, base station 700 can also comprise memory 740, for storing above-mentioned data.

Processor 710, when the subframe of the reference uplink-downlink configuration corresponding with the conflict descending sub frame of SCell is sub-frame of uplink, determines the feedback timing of at least one descending sub frame contiguous with this sub-frame of uplink in this reference uplink-downlink configuration.Processor 710 is also according to the feedback timing of at least one descending sub frame above-mentioned, determine the feedback timing of descending sub frame on PCell that conflict, wherein the uplink-downlink configuration of this PCell is different from the uplink-downlink configuration of this SCell, and the descending sub frame of this PCell is the subset of the descending sub frame of this reference uplink-downlink configuration.Transceiver 720 receives the feedback information of this conflict descending sub frame according to the feedback timing of determined conflict descending sub frame on main plot on this main plot.

Can when the subframe of the reference uplink-downlink configuration corresponding with the conflict descending sub frame of SCell be sub-frame of uplink according to embodiments of the invention, adopt the timing of the feedback of the descending sub frame contiguous with this sub-frame of uplink with reference to uplink-downlink configuration as the feedback timing of descending sub frame on PCell that conflict, thus make base station effectively can receive the uplink feedback of SCell on PCell.

Alternatively, as another embodiment, processor 710, based on the time delay in the processing time to conflict descending sub frame, selects one of the first timing and the second timing as the feedback timing of conflict descending sub frame on this PCell.

Alternatively, as another embodiment, processor 710 also using the second timing as the feedback of conflict descending sub frame on this PCell regularly.

Alternatively, as another embodiment, processor 710, also based on the time delay in the processing time to conflict descending sub frame, selects one of the first timing and the second timing as the feedback timing of conflict descending sub frame on main plot.

Alternatively, as another embodiment, processor 710, also based on the equilibrium of feedback load, selects one of the first timing and the second timing as the feedback timing of conflict descending sub frame on this PCell.

Alternatively, as another embodiment, processor 710 also select following timing once as the feedback timing of conflict descending sub frame on this PCell: the first timing, the second timing, first regularly and second regularly between a timing.

Alternatively, as another embodiment, processor 710 is also when the subframe of the reference uplink-downlink configuration corresponding with the conflict descending sub frame of this SCell is descending sub frame, according to the second feedback timing of this descending sub frame of this reference uplink-downlink configuration, determine the feedback timing of descending sub frame on this PCell that conflict, transceiver 720 also according to the second feedback timing, main plot receives the feedback information of conflict descending sub frame.

Alternatively, as another embodiment, processor 710 is also according to the feedback timing of the descending sub frame with reference to uplink-downlink configuration, determine the feedback timing of the non conflicting descending sub frame of time community on main plot, wherein non conflicting descending sub frame represents that the subframe of the main plot corresponding with non conflicting descending sub frame is descending sub frame, transceiver 720 also according to the feedback timing of non conflicting descending sub frame on main plot of determined community, described main plot receives the feedback information of non conflicting descending sub frame.

Alternatively, as another embodiment, processor 710 is also according to the feedback timing of the descending sub frame with reference to uplink-downlink configuration, determine the feedback timing of the descending sub frame of main plot, transceiver 720 also according to the feedback timing of the descending sub frame of determined main plot, main plot receives the feedback information of the descending sub frame of main plot.

The operation of the unit of base station 700 and function with reference to the method with Fig. 2 A, in order to avoid repeating, can not repeat them here.

Those of ordinary skill in the art can recognize, in conjunction with unit and the algorithm steps of each example of embodiment disclosed herein description, can realize with the combination of electronic hardware or computer software and electronic hardware.These functions perform with hardware or software mode actually, depend on application-specific and the design constraint of technical scheme.Professional and technical personnel can use distinct methods to realize described function to each specifically should being used for, but this realization should not thought and exceeds scope of the present invention.

Those skilled in the art can be well understood to, and for convenience and simplicity of description, the specific works process of the system of foregoing description, device and unit, with reference to the corresponding process in preceding method embodiment, can not repeat them here.

In several embodiments that the application provides, should be understood that disclosed system, apparatus and method can realize by another way.Such as, device embodiment described above is only schematic, such as, the division of described unit, be only a kind of logic function to divide, actual can have other dividing mode when realizing, such as multiple unit or assembly can in conjunction with or another system can be integrated into, or some features can be ignored, or do not perform.Another point, shown or discussed coupling each other or direct-coupling or communication connection can be by some interfaces, and the indirect coupling of device or unit or communication connection can be electrical, machinery or other form.

The described unit illustrated as separating component or can may not be and physically separates, and the parts as unit display can be or may not be physical location, namely can be positioned at a place, or also can be distributed in multiple network element.Some or all of unit wherein can be selected according to the actual needs to realize the object of the present embodiment scheme.

In addition, each functional unit in each embodiment of the present invention can be integrated in a processing unit, also can be that the independent physics of unit exists, also can two or more unit in a unit integrated.

If described function using the form of SFU software functional unit realize and as independently production marketing or use time, can be stored in a computer read/write memory medium.Based on such understanding, the part of the part that technical scheme of the present invention contributes to prior art in essence in other words or this technical scheme can embody with the form of software product, this computer software product is stored in a storage medium, comprising some instructions in order to make a computer equipment (can be personal computer, server, or the network equipment etc.) perform all or part of step of method described in each embodiment of the present invention.And aforesaid storage medium comprises: USB flash disk, portable hard drive, read-only memory (ROM, Read-OnlyMemory), random access memory (RAM, RandomAccessMemory), magnetic disc or CD etc. various can be program code stored medium.

The above; be only the specific embodiment of the present invention, but protection scope of the present invention is not limited thereto, is anyly familiar with those skilled in the art in the technical scope that the present invention discloses; change can be expected easily or replace, all should be encompassed within protection scope of the present invention.Therefore, protection scope of the present invention should described be as the criterion with the protection range of claim.

Claims

1. realize a method for hybrid automatic repeat-request, it is characterized in that, comprising:

When the subframe of the reference uplink-downlink configuration corresponding with the conflict descending sub frame of secondary community is sub-frame of uplink, determine the timing of the described feedback with reference at least one descending sub frame contiguous with described sub-frame of uplink in uplink-downlink configuration;

According to the feedback timing of at least one descending sub frame described, determine the feedback timing of described conflict descending sub frame on main plot, the uplink-downlink configuration of wherein said main plot is different from the uplink-downlink configuration of described community, and the descending sub frame of described main plot is the subset of the described descending sub frame with reference to uplink-downlink configuration;

According to the feedback timing of determined described conflict descending sub frame on main plot, described main plot sends or receives the feedback information of described conflict descending sub frame.

2. method according to claim 1, is characterized in that, described identical with the uplink-downlink configuration of described main plot with reference to uplink-downlink configuration.

3. method according to claim 1, it is characterized in that, the feedback timing of at least one descending sub frame described comprises: described the first timing with reference to descending sub frame nearest before sub-frame of uplink described in uplink-downlink configuration and/or described the second timing with reference to descending sub frame nearest after sub-frame of uplink described in uplink-downlink configuration.

4. method according to claim 3, is characterized in that, the feedback timing of at least one descending sub frame described in described basis, determines the feedback timing of described conflict descending sub frame on main plot, comprising:

Using described second timing as described conflict descending sub frame on described main plot feedback timing.

5. the method according to any one in Claims 1-4, is characterized in that, the feedback timing of the descending sub frame of described community is determined by following table:

Wherein m is the sequence number with reference to downstream arrangements, n is the call number of the subframe with reference to downstream arrangements, each numerical value corresponding with described n and described m represents with k, and when described reference uplink-downlink configuration is m, subframe n is the feedback timing of the descending sub frame n-k of described community.

6. method according to claim 3, is characterized in that, the feedback timing of at least one descending sub frame described in described basis, determines the feedback timing of described conflict descending sub frame on main plot, comprising:

Based on the time delay in the processing time to described conflict descending sub frame, select one of described first timing and described second timing as the feedback timing of described conflict descending sub frame on described main plot.

7. the method according to claim 1,2,3 or 6, is characterized in that, the feedback timing of the descending sub frame of described community is determined by following table:

8. method according to claim 3, is characterized in that, the feedback timing of at least one descending sub frame described in described basis, determines the feedback timing of described conflict descending sub frame on main plot, comprising:

Based on the equilibrium of feedback load, select one of described first timing and described second timing as the feedback timing of described conflict descending sub frame on described main plot.

9. the method according to claim 1,2,3 or 8, is characterized in that, the feedback timing of the descending sub frame of described community is determined by following table:

10. method according to claim 3, is characterized in that, the feedback timing of at least one descending sub frame described in described basis, determines the feedback timing of described conflict descending sub frame on main plot, comprising:

Select following timing once as the feedback timing of described conflict descending sub frame on described main plot: a timing between described first timing, described second timing, described first timing and described second regularly.

11. methods according to any one in Claims 1-4, is characterized in that, also comprise:

The subframe of the reference uplink-downlink configuration corresponding at the described conflict descending sub frame with described community is descending sub frame, according to the feedback timing of the described described descending sub frame with reference to uplink-downlink configuration, determine the second feedback timing of described conflict descending sub frame on described main plot;

According to described second feedback timing, described main plot sends or receives the feedback information of described conflict descending sub frame.

12. methods according to any one in Claims 1-4, is characterized in that, are describedly also used to indicate with reference to uplink-downlink configuration the duplex directions that described conflict descending sub frame configures.

13. according to any one in Claims 1-4 method, it is characterized in that, also comprise:

According to the feedback timing of the described descending sub frame with reference to uplink-downlink configuration, determine the feedback timing of the non conflicting descending sub frame of described community on described main plot;

According to the feedback timing of non conflicting descending sub frame on described main plot of determined described community, described main plot sends or receives the feedback information of described non conflicting descending sub frame.

14. methods according to any one in Claims 1-4, is characterized in that, also comprise:

According to the feedback timing of the described descending sub frame with reference to uplink-downlink configuration, determine the feedback timing of the descending sub frame of described main plot;

According to the feedback timing of the descending sub frame of determined described main plot, described main plot sends or receives the feedback information of the descending sub frame of described main plot.

15. 1 kinds of subscriber equipmenies, is characterized in that, comprising:

Processor, for when the subframe of the reference uplink-downlink configuration corresponding with the conflict descending sub frame of secondary community is sub-frame of uplink, determines the timing of the described feedback with reference at least one descending sub frame contiguous with described sub-frame of uplink in uplink-downlink configuration; And for the feedback timing according at least one descending sub frame described, determine the feedback timing of described conflict descending sub frame on main plot, the uplink-downlink configuration of wherein said main plot is different from the uplink-downlink configuration of described community, and the descending sub frame of described main plot is the subset of the described descending sub frame with reference to uplink-downlink configuration;

Transceiver, for according to the feedback timing of determined described conflict descending sub frame on main plot, described main plot sends the feedback information of described conflict descending sub frame.

16. subscriber equipmenies according to claim 15, it is characterized in that, the feedback timing of at least one descending sub frame described comprises: described the first timing with reference to descending sub frame nearest before sub-frame of uplink described in uplink-downlink configuration and/or described the second timing with reference to descending sub frame nearest after sub-frame of uplink described in uplink-downlink configuration.

17. subscriber equipmenies according to claim 16, is characterized in that, described processor using described second timing as described conflict descending sub frame on described main plot feedback timing.

18. subscriber equipmenies according to claim 16, it is characterized in that, described processor, based on the time delay in the processing time to described conflict descending sub frame, selects one of described first timing and described second timing as the feedback timing of described conflict descending sub frame on described main plot.

19. subscriber equipmenies according to claim 16, is characterized in that, described processor, based on the equilibrium of feedback load, selects one of described first timing and described second timing as the feedback timing of described conflict descending sub frame on described main plot.

20. according to claim 15 to the subscriber equipment described in any one in 19, it is characterized in that, the subframe of the reference uplink-downlink configuration that described processor is also corresponding at the described conflict descending sub frame with described community is descending sub frame, according to the feedback timing of the described described descending sub frame with reference to uplink-downlink configuration, determine the second feedback timing of described conflict descending sub frame on described main plot, described transceiver also according to described second feedback timing, described main plot sends or receives the feedback information of described conflict descending sub frame.

21. according to claim 15 to the subscriber equipment described in any one in 19, it is characterized in that, described processor is also according to the feedback timing of the described descending sub frame with reference to uplink-downlink configuration, determine the feedback timing of the non conflicting descending sub frame of described community on described main plot, described transceiver also according to the feedback timing of non conflicting descending sub frame on described main plot of determined described community, described main plot sends the feedback information of described non conflicting descending sub frame.

22. according to claim 15 to the subscriber equipment described in any one in 19, it is characterized in that, described processor is also according to the feedback timing of the described descending sub frame with reference to uplink-downlink configuration, determine the feedback timing of the descending sub frame of described main plot, described transceiver also according to the feedback timing of the descending sub frame of determined described main plot, described main plot sends the feedback information of the descending sub frame of described main plot.

23. 1 kinds of base stations, is characterized in that, comprising:

Transceiver, for receiving the feedback information of described conflict descending sub frame on described main plot according to the feedback timing of determined described conflict descending sub frame on main plot.

24. base stations according to claim 23, it is characterized in that, the feedback timing of at least one descending sub frame described comprises: described the first timing with reference to descending sub frame nearest before sub-frame of uplink described in uplink-downlink configuration and/or described the second timing with reference to descending sub frame nearest after sub-frame of uplink described in uplink-downlink configuration.

25. base stations according to claim 24, is characterized in that, described processor using described second timing as described conflict descending sub frame on described main plot feedback timing.

26. base stations according to claim 24, it is characterized in that, described processor, based on the time delay in the processing time to described conflict descending sub frame, selects one of described first timing and described second timing as the feedback timing of described conflict descending sub frame on described main plot.

27. base stations according to claim 24, is characterized in that, described processor, based on the equilibrium of feedback load, selects one of described first timing and described second timing as the feedback timing of described conflict descending sub frame on described main plot.

28. base stations according to any one in claim 23 to 27, it is characterized in that, the subframe of the reference uplink-downlink configuration that described processor is also corresponding at the described conflict descending sub frame with described community is descending sub frame, according to the second feedback timing of the described described descending sub frame with reference to uplink-downlink configuration, determine the feedback timing of described conflict descending sub frame on described main plot, described transceiver also according to described second feedback timing, described main plot receives the feedback information of described conflict descending sub frame.

29. base stations according to any one in claim 23 to 27, it is characterized in that, described processor is also according to the feedback timing of the described descending sub frame with reference to uplink-downlink configuration, determine the feedback timing of the non conflicting descending sub frame of described community on described main plot, described transceiver also according to the feedback timing of non conflicting descending sub frame on described main plot of determined described community, described main plot receives the feedback information of described non conflicting descending sub frame.

30. base stations according to any one in claim 23 to 27, it is characterized in that, described processor is also according to the feedback timing of the described descending sub frame with reference to uplink-downlink configuration, determine the feedback timing of the descending sub frame of described main plot, described transceiver also according to the feedback timing of the descending sub frame of determined described main plot, described main plot receives the feedback information of the descending sub frame of described main plot.