CN103944688B

CN103944688B - A kind of processing method of feedback information, equipment and system

Info

Publication number: CN103944688B
Application number: CN201310023661.1A
Authority: CN
Inventors: 陈文洪; 高秋彬; 高雪娟; 林亚男
Original assignee: China Academy of Telecommunications Technology CATT
Current assignee: China Academy of Telecommunications Technology CATT; Datang Mobile Communications Equipment Co Ltd
Priority date: 2013-01-22
Filing date: 2013-01-22
Publication date: 2017-09-29
Anticipated expiration: 2033-01-22
Also published as: CN103944688A

Abstract

The invention discloses a kind of processing method of feedback information, equipment and system, for solving in the prior art because the interaction time delay between each base station is longer, cause the problem of UE can not carry out the re-transmission of wrong data in time.The method of the embodiment of the present invention includes：UE receives the first feedback information that each base station is determined respectively；According to the content of each first feedback information, determine the need for feeding back the second feedback information, after it is determined that needing the second feedback information of feedback, and second feedback information is fed back, so that any base station knows that other base stations send the situation of the first feedback information according to whether UE has fed back the second feedback information；Or according to the content of each first feedback information, the content of the second feedback information is determined, and second feedback information is fed back, so that any base station sends the situation of the first feedback information according to other base stations of the content aware of the second feedback information.The embodiment of the present invention reduces the interaction between base station, will not increase the time delay of UE uplink data retransmissions.

Description

A kind of processing method of feedback information, equipment and system

Technical field

The present invention relates to wireless communication technology field, more particularly to a kind of processing method of feedback information, equipment and system.

Background technology

Multi-point cooperative transmission（Coordinated Multipoint Transmission/Reception, CoMP）Technology Refer to the cooperation transmission between the multiple transmission point that is separated on geographical position.In general, the plurality of transfer point can be different The base station of cell or multiple remote radio-frequency heads of the base station of same cell control（Remote Radio Head, RRH）. By the cooperation transmission between multiple transmission point, the interference between different transfer points can be effectively reduced, user equipment is improved （User Equipment, UE）The particularly handling capacity of Cell Edge User equipment.The difference transmitted according to uplink/downlink, CoMP Technology is divided into up CoMP transmission and descending CoMP transmission, wherein, up CoMP transmission mainly includes cooperative scheduling and combined to connect Receive two schemes.

First, joint is received.In the program, multiple transmission point receive same UE signal need by Combined Treatment with The UE signal for needing interaction to be respectively received between output signal, and transfer point is obtained, the size of interactive information depends on receiving The degree of Signal Pretreatment.Carrying out when joint is received, it is necessary to CoMP gains and passback（backhaul）Expense is traded off, That is base station, according to the distance between UE and each transfer point, is that each UE selects respective reception point set.Typically, Ke Yishe A threshold level is put, according to detection reference signal（Sounding Reference Signal, SRS）Receiving power, selection with The transfer point that the difference of maximum SRS receiving powers is less than threshold level is used as receiving point.Specifically, joint reception scheme include with Lower several ways：

1st, combined signal detection, the i.e. reception antenna of multiple transmission point are received and constitutes a Virtual MIMO （Multiple Input Multiple Output, MIMO）System, after the reception combined signal processing on all antennas, system One carries out channel estimation, detection and demodulates.The complexity of which is very high, but signal to noise ratio after detection（Signal to Noise Ratio, SNR）It is higher, larger joint-detection gain can be obtained, but more information exchange is needed between each transfer point.

2nd, soft bit merges, i.e., the soft bit detected each transfer point is merged, and then makes decisions detection. The complexity of which is general, and the information exchange after processing compression may be reduced between CoMP gain, and each transfer point Only need less information exchange.

3rd, testing result merges, i.e., detected respectively in each transfer point, then to the testing result of each transfer point Merge.The re-transmission accuracy of which is high, and complexity is relatively low, and information exchange is less, but under the scene of low signal-to-noise ratio, The performance of which is not so good as first two mode.

2nd, cooperative scheduling.In the program, UE scheduling determines that the transmission of multiple transmission point in collaboration region need to be considered To minimize interference.Due to that only need to interact CSI and resource allocation information between cooperation point, the backhaul expenses of the program are relatively low； Meanwhile, base station can also carry out the combined dispatching of uplink pilot signal, be improved by interference randomization or sequence orthogonalization The performance of channel estimation.

In such scheme, gain it is larger be joint reception scheme, but in the program, the information exchange between base station is can not Avoid, wherein, between base station transinformation content at least be that testing result merges mode, typical way is：Interaction between base station The correct response obtained after each Autonomous test（Acknowledgement, ACK）/ wrong responses（Negative Acknowledgement, NACK）Feedback information and the data of the UE transmission correctly detected.Specifically：Each cooperative base station root According to the testing result of itself, service base of the corresponding ACK/NACK feedback informations interaction of data that same UE is transmitted to the UE Stand, serving BS integrates itself and the testing result of each cooperative base station judges whether to need UE to be retransmitted, then by after synthesis ACK/NACK feedback informations by Physical HARQ Indicator Channel (Physical HybridARQ Indicator Channel, PHICH）Notify to UE, so that UE judges whether to need to retransmit accordingly.When the feedback information of itself and all cooperative base stations is When NACK feeds back, serving BS notifies NACK to UE；When the feedback information of each cooperative base station includes at least one ACK feedbacks When, serving BS notifies ACK to UE.

For the non-CoMP transmission of single cell, UE uplink retransmission is general to be carried out after some ms are just passed, if carrying out above-mentioned CoMP transmission, the time delay of UE uplink retransmission needs to increase the time delay interacted between base station on this basis.It is main between current base station Signaling connection based on backhaul is set up by X2 interface, and information exchange is carried out by the signaling of X2 interface.Certainly, base station Between can also be connected by S1 interfaces with core net, the information exchange between base station is realized indirectly.No matter X2 interface or S1 are used Information exchange between interface, base station is required for larger processing delay, typically all more than 10ms time delay, if complete between waiting base station Indicate whether UE needs to retransmit by PHICH again after into information exchange, can not be carried out in time because time delay is easily caused greatly very much UE The re-transmission of wrong data, or base station can not effectively dispatch UE new data transmission, so as to have a strong impact on UE uplink effect Rate.

In summary, in the cooperation scheme that existing up joint is received, because the interaction needs between each base station are larger Time delay, the re-transmission of wrong data can not be carried out in time by being easily caused UE, or base station can not effectively dispatch UE new data transmission, So as to have a strong impact on UE uplink efficiency.

The content of the invention

The embodiments of the invention provide a kind of processing method of feedback information, equipment and system, for solving prior art In larger time delay is needed due to the interaction between each base station, caused by UE can not carry out the re-transmission of wrong data in time, or The problem of base station can not effectively dispatch UE new data transmission.

The embodiments of the invention provide a kind of processing method of feedback information, including：

UE receives the first feedback information that the base station for the cooperative transmission for each participating in the UE is determined respectively, wherein, described the One feedback information is used to indicate whether the same upstream data that the UE is sent correctly transmits, the cooperative transmission of the participation UE Base station including the UE serving BS and at least one cooperative base station；

The UE is according to the content of each first feedback information, it is determined whether need to carry out the re-transmission of the upstream data；

The UE is according to the content of each first feedback information, it is determined whether need to feed back the second feedback information, and it is determined that Need after the second feedback information of feedback, second feedback information is fed back, so that whether any base station feeds back according to the UE Second feedback information can know that other base stations that cooperative transmission is participated in addition to itself send the situation of the first feedback information；Or Person determines the content of the second feedback information according to the content of each first feedback information, and feeds back second feedback information, so as to appoint Other base stations according to being known the content of second feedback information of base station described in one send the feelings of the first feedback information Condition.

The embodiments of the invention provide the processing method of another feedback information, including：

Each base station of cooperative transmission of user equipment (UE) is participated according to the schedule information of the UE, detects that the UE's is up Data, and to the UE send itself determination be used for indicate the first the feedback information whether upstream data correctly transmits, Wherein, participating in the base station of UE cooperative transmission includes the serving BS and at least one cooperative base station of the UE；

The base station whether the second feedback information, or the second feedback letter fed back according to the UE are fed back according to the UE The content of breath, determines whether the UE can carry out the re-transmission of the upstream data.

A kind of user equipment provided in an embodiment of the present invention, including：

Receiving module, for receiving the first feedback information that the base station of each participation cooperative transmission is determined respectively, wherein, institute Stating the first feedback information is used to indicate whether the same upstream data that the UE is sent correctly transmits, the participation cooperative transmission Base station includes the serving BS and at least one cooperative base station of itself；

First determining module, for the content according to each first feedback information, it is determined whether need to carry out the upper line number According to re-transmission；

Second determining module, for the content according to each first feedback information, it is determined whether need to feed back the second feedback letter Breath, and after it is determined that needing the second feedback information of feedback, second feedback information is fed back, so that any base station is according to itself Whether having fed back the second feedback information can know that other base stations that cooperative transmission is participated in addition to itself send the first feedback letter The situation of breath；Or according to the content of each first feedback information, the content of the second feedback information is determined, and feed back second feedback Information, so that other base stations transmission first according to being known the content of second feedback information of any base station is anti- The situation of feedforward information.

A kind of base station of participation UE provided in an embodiment of the present invention cooperative transmission, including：

First processing module, for the schedule information according to the UE, detects the upstream data of the UE, and to the UE What transmission itself was determined is used to indicate the first the feedback information whether upstream data correctly transmits；

Second processing module, for whether feeding back the second feedback information according to the UE, or according to UE feedbacks The content of second feedback information, determines whether the UE can carry out the re-transmission of the upstream data.

A kind of communication system provided in an embodiment of the present invention, including：

User equipment (UE), for receiving the first feedback letter that the base station for the cooperative transmission for each participating in the UE is determined respectively Breath；According to the content of each first feedback information, it is determined whether need to carry out the re-transmission of the upstream data；According to each first feedback The content of information, it is determined whether need to feed back the second feedback information, and after it is determined that needing the second feedback information of feedback, feedback should Second feedback information, so that any base station can be known in addition to itself according to whether the UE has fed back the second feedback information Other base stations for participating in cooperative transmission send the situation of the first feedback information；Or according to the content of each first feedback information, really The content of fixed second feedback information, and second feedback information is fed back, so that any base station is according to second feedback letter The interior of breath can hold the situation for knowing that other described base stations send the first feedback information；

Base station, for the schedule information according to the UE, detects the upstream data of the UE, and send itself to the UE Determine be used for indicate the first the feedback information whether upstream data correctly transmits；It is anti-according to whether the UE feeds back second Feedforward information, or according to the content of the UE the second feedback informations fed back, determine whether the UE can carry out the upper line number According to re-transmission；

Wherein, the base station of the cooperative transmission of the participation UE includes the serving BS and at least one cooperation base of the UE Stand.

UE of the embodiment of the present invention receives the first feedback information that the base station for the cooperative transmission for each participating in the UE is determined respectively, And according to the content of each first feedback information, it is determined whether need to carry out the re-transmission of upstream data；And according to each first feedback The content of information, it is determined whether need to feed back the second feedback information, so that whether any base station can feed back second according to the UE Feedback information knows that other base stations for the cooperative transmission that the UE is participated in addition to itself send the situation of the first feedback information；Or According to the content of each first feedback information, the content of the second feedback information is determined, so that any base station can be second anti-according to this The content aware of feedforward information other base stations send the situation of the first feedback information.The embodiment of the present invention can be interacted between base station In the case of having any problem（The time delay of interaction is larger between such as base station）, the ACK/NACK cooperations between base station are completed by UE, so that The gain of up cooperative transmission is obtained, the interaction between base station is reduced, so that the time delay of UE uplink data retransmissions will not be increased.

Brief description of the drawings

Fig. 1 is the schematic flow sheet of the processing method of user equipment side feedback information of the embodiment of the present invention；

Fig. 2 is the schematic flow sheet of the processing method of base station side feedback information of the embodiment of the present invention；

Fig. 3 is the schematic flow sheet of the embodiment of the present invention 1；

Fig. 4 is the schematic flow sheet of the embodiment of the present invention 2；

Fig. 5 is the structural representation of the user equipment of the embodiment of the present invention；

Fig. 6 is the structural representation of the base station of the participation UE of embodiment of the present invention cooperative transmission；

Fig. 7 is the structural representation of the communication system of the embodiment of the present invention.

Embodiment

The ACK/NACK that the present invention is completed by UE between base station cooperates, so as to solve in the prior art due between each base station Information exchange need larger time delay, the re-transmission of wrong data can not be carried out in time by being easily caused UE, or base station can not have The problem of effect scheduling UE new data transmission.

The embodiment of the present invention is described in further detail with reference to Figure of description.

Shown in Figure 1, a kind of processing method of feedback information provided in an embodiment of the present invention comprises the following steps：

Step 11, UE receive the first feedback information that the base station for the cooperative transmission for each participating in the UE is determined respectively；

Wherein, first feedback information is used to indicate whether the same upstream data that UE is sent correctly transmits, and participates in the UE Cooperative transmission base station including the UE serving BS and at least one cooperative base station；

Further, first feedback information can be ACK/NACK information, if base station can be properly received and correctly solve The upstream data that code UE is sent, then the base station is to UE feeding back ACK information；If base station can not be received or can not to be correctly decoded this up Data, then the base station to UE feed back nack message.Certain first feedback information can also be the information of other forms, as long as can refer to Show whether the upstream data that UE is sent correctly transmits, but need to allow UE to know that what each information represents and contain respectively in advance Justice.

Step 12, UE are according to the content of each first feedback information, it is determined whether need to carry out the re-transmission of upstream data；

In this step, so that the first feedback information is ACK/NACK information as an example, each base station returns to upstream data to UE After ACK/NACK information, UE is when it is determined that the feedback information received has at least one ACK information, and the UE determines to carry out The re-transmission of the upstream data；UE is when it is determined that all feedback informations received are nack message, and the UE determines to need to carry out The re-transmission of the upstream data.

Step 13, UE are according to the content of each first feedback information, it is determined whether need to feed back the second feedback information, and true Surely need after the second feedback information of feedback, feed back second feedback information, so that whether any base station has fed back the according to the UE Two feedback informations can know that other base stations that cooperative transmission is participated in addition to itself send the situation of the first feedback information；Or According to the content of each first feedback information, the content of the second feedback information is determined, and feeds back second feedback information, so that any Base station can know that other base stations send the situation of the first feedback information according to the content of second feedback information；

In this step, UE can impose a condition according to whether the content of each first feedback information meets, to determine whether to need Will be to each feedback information of base station feedback second, after it is determined that needing the second feedback information of feedback, to each base station feedback, this is second anti- Feedforward information；UE can also directly determine needs to each base station feedback the after the first feedback information that each base station is returned is received Two feedback informations, and according to the content for receiving the first feedback information that each base station is returned, determine the interior of second feedback information Hold, and to each base station feedback second feedback information.

It should be noted that following examples are illustrated so that the first feedback information is ACK/NACK as an example, first is anti- Feedforward information is similar using the information of other forms, and explanation is will not enumerate herein.

In the embodiment of the present invention, before step 11, this method also includes：

The schedule information that UE is configured according to own services base station, carries out transmitting uplink data.

Accordingly, each base station（Serving BS and all cooperative base stations including the UE）According to the up of UE transmissions Whether data are correctly transmitted, and obtain corresponding first feedback information；Specifically：

If the base station determines the upstream data normal transmission（I.e. base station can receive the upstream data and can correctly solve The code upstream data）, then the content for the first feedback information that the base station is obtained is ACK, and sends first feedback information to UE； And

If the base station determines that the upstream data is normally abnormal（I.e. base station is not received by the upstream data, though or it can receive To the upstream data but the upstream data can not be correctly decoded）, then the content for the first feedback information that the base station is obtained is NACK, And send first feedback information to UE.

Further, UE receives the first feedback letter that the base station for the cooperative transmission for each participating in the UE is sent respectively in step 11 Breath, is specifically included：

UE is believed by the corresponding physical hybrid automatic repeat request indicator channel PHICH in each base station, physical down control Road（Physical Downlink Control Channel, PDCCH）Or enhanced Physical Downlink Control Channel （Enhanced-PDCCH, ePDCCH）Receive the first feedback information of base station transmission.

Further, in step 12, UE determines the need for carrying out the re-transmission of upstream data, specifically includes：

If the content for the first feedback information that the base station of all participation UE cooperative transmission is returned is NACK, and UE is current Number of retransmissions be less than maximum retransmission, then the UE determine need carry out the upstream data re-transmission；

Otherwise,（That is the content for the first feedback information that at least one base station is returned is ACK, or the re-transmissions of the UE currently time Number has reached maximum retransmission）, the UE determine need not carry out the re-transmission of upstream data.

Further, if UE determines the re-transmission for needing to carry out upstream data in step 12, this method also includes：UE is under A kind of re-transmission of carry out upstream data in row mode：

Mode one, UE are according to the re-transmission timing relationship arranged with each base station（timing）, carry out the re-transmission of upstream data；

In which, the re-transmission timing relationship that UE arranges with each base station（timing）Can be with identical（Such as receive this The re-transmission of the upstream data is carried out after one subframe of feedback information 4）, can also be different.

Retransfer scheduling information or the retransfer scheduling letter of own services base station configuration that mode two, UE are configured according to each base station Breath, carries out the re-transmission of upstream data；

In which, the retransfer scheduling information that UE can be configured according to each base station is carried out up in corresponding resource The re-transmission of data, wherein, the retransfer scheduling information of each base station configuration can be with identical, can also be different；The UE can also basis The retransfer scheduling information of own services base station configuration, carries out the re-transmission of upstream data in corresponding resource；

If the retransfer scheduling information that UE is configured according to own services base station, carries out the re-transmission of the upstream data, then in the UE Before the re-transmission for carrying out the upstream data, this method also includes：

The retransfer scheduling information of configuration is sent to all cooperative base stations by UE serving BS, so that cooperative base station can Know resource used when the UE is retransmitted.

It should be noted that the UE carries out the re-transmission of upstream data using which kind of above-mentioned mode, it can provide in the protocol； Informed after can also being determined by UE to network side equipment（Such as base station）, or by network side equipment determine after inform to UE；May be used also To be determined after being consulted by network side equipment and UE.

Further, in step 13, UE is according to the content of each first feedback information received, it is determined whether need transmission Two feedback informations, including following two modes：

Mode 1, UE directly determine to need to send the second feedback information；

Under which, no matter which type of the first feedback information UE receives, and all carries out the feedback of the second feedback information；

Mode 2, UE are it is determined that the first feedback information received is met after imposing a condition, it is determined that it is anti-to send second Feedforward information；Otherwise, it determines needing to send the second feedback information.

Further, imposing a condition including one kind in following condition in mode 2：

The content for the first feedback information that condition A, serving BS are returned is ACK；

The content for the first feedback information that condition B, the base station of at least one cooperative transmission for participating in the UE are returned is ACK；

The content for the first feedback information that condition C, all base stations are returned is NACK；

The first feedback letter that the content for the first feedback information that condition D, serving BS are returned is returned with all cooperative base stations The content all same of breath；

First that the content and at least one cooperative base station of the first feedback information that condition E, serving BS are returned are returned is anti- The content of feedforward information is different；

Condition F, UE receives the first feedback information from PDCCH or ePDCCH, and at least one base station is corresponding The new transmitting uplink data of the UE is scheduled in PDCCH or ePDCCH.

It should be noted that whether UE needs feedback second to feed back using which kind of mode and UE using which kind of condition judgment Information, can be provided in the protocol, can also consult to determine by UE and each base station, each base station is informed after can also being determined by UE, But it must assure that UE is consistent with the understanding of base station.

Further, in step 13, UE is sending second feedback information after it is determined that needing the second feedback information of feedback Before, in addition to：

The UE determines the content for the second feedback information that needs feed back, and specifically includes following two methods：

Method 1, UE using any information unrelated with the first feedback information as the second feedback information content；Such as bit letter Breath, character information etc.；Under this method, the content of second feedback information can also be sky；

Method 2, UE determine the content of the second feedback information according to the content of each first feedback information received.

In the embodiment of the present invention, UE determines the second feedback information according to the content of each first feedback information received Content, specifically includes following three kinds of modes：

Each first feedback information received is carried out mode A1, UE into binary system summation or XOR is handled, and will obtain Information as the second feedback information content；

Wherein, binary system summation process is specifically included：The result that ACK and ACK carries out binary system summation is ACK；NACK with The result that ACK carries out binary system summation is NACK；The result that NACK and NACK carries out binary system summation is NACK；

XOR processing is specifically included：The result that ACK and ACK carries out XOR is NACK；NACK and ACK carries out the result of XOR For ACK；The result that NACK and NACK carries out XOR is NACK；

The quantity using the base station of the cooperative transmission that participates in UE is two below（One serving BS and a cooperative base station） Exemplified by mode A1 is illustrated, it is assumed that the content of the first feedback information of serving BS be ACK, cooperative base station first feedback The content of information is NACK, then：UE can carry out the content of two first feedback informations the result NACK of binary system summation It is used as the content of the second feedback information；The contents of two first feedback informations can also be carried out the result ACK of XOR as The content of second feedback information.

Mode A2, UE according in all first feedback informations received with the presence or absence of at least one the first feedback information Content is ACK, determines the content of the second feedback information；

For example, representing that UE whether there is at least one according in all first feedback informations received using 1bit data The content of first feedback information is ACK, specifically：Represent that the UE determines to deposit in all first feedback informations received with " 0 " At least one the first feedback information content be ACK, now, it is determined that the second feedback information content be 0；Represented with " 1 " The UE determines that the content of all first feedback informations received is NACK, now, it is determined that the second feedback information content For 1；

Certainly, mode can also use other information indicate whether the content in the presence of at least one the first feedback information for ACK, as long as allowing UE and each base station to know what implication is each information represent respectively in advance.

Whether all identical or part is identical or differs entirely according to the content of each first feedback information for mode A3, UE, really The content of fixed second feedback information.

For example, using bit data represent the content of each first feedback information whether all identical or parts it is identical or it is complete not It is identical；Specifically：

Assuming that the quantity for participating in the base station of UE cooperative transmission is two（One serving BS and a cooperative base station）, can The relation of the first feedback information of two base stations is represented with 1 bit data of use, such as：The of two base stations is represented with " 0 " The content of one feedback information is identical（It is NACK or is ACK）, then the content of second feedback information is 0；Being represented with " 1 " should First feedback information of two base stations is differed entirely（One is NACK, and another is ACK）, then the content of second feedback information For 1；

Assuming that the quantity for participating in the base station of the cooperative transmission of the UE is three（I.e. one serving BS and two cooperation bases Stand）, then the relation of the first feedback information of three base stations can be represented using 2 bit datas, as shown in table 1：

Bit data	The content of instruction
		00	First feedback information of each base station is respectively 000 or 111
01	First feedback information of each base station is respectively 001 or 110
		10	First feedback information of each base station is respectively 100 or 011
11	First feedback information of each base station is respectively 010 or 101

Table 1

In table 1,0 represents the content of the first feedback information for NACK（Or ACK）, 1 expression the first feedback information content be ACK（Or NACK）；Specifically：

Bit data " 00 " represents that the content of the first feedback information of three base stations is all identical（Be ACK or NACK）；

Bit data " 01 " represents that first base station is identical with the content of the first feedback information of second base station, and with the First feedback information of three base stations is different；The first feedback information such as the first two base station is NACK（Or ACK）And the 3rd base The content for the first feedback information stood is ACK（Or NACK）；

Bit data " 10 " represents that second base station is identical with the content of the first feedback information of the 3rd base station, and with the First feedback information of one base station is different；The first feedback information such as latter two base station is NACK（Or ACK）And first base The content for the first feedback information stood is ACK（Or NACK）；

Bit data " 11 " represents that first base station is identical with the content of the first feedback information of the 3rd base station, and with the First feedback information of two base stations is different；The first feedback information such as first base station and the 3rd base station is NACK（Or ACK）And the content of the first feedback information of second base station is ACK（Or NACK）.

Certainly, under which, the content that each bit information is indicated is not limited to aforesaid way, can be set as needed It is fixed, as long as allowing UE to know what content each bit information indicates with each base station.In addition, under which, it would however also be possible to employ Other information represents the first feedback information of each base station, and all whether identical or parts are identical or differ entirely, as long as allowing UE and respectively Know the content that each information is indicated in base station.

It should be noted that it is similar for the situation of more than three to participate in the quantity of the base station of the cooperative transmission of the UE, Here is omitted.In addition, when the quantity for participating in the base station of the cooperative transmission of the UE is three and the above, base station needs to know in advance Each base station puts in order in content indicated by the feedback information of road second, and this, which puts in order, to provide in the protocol, can also By UE determine after inform each base station, determined after can also being consulted by UE and base station, but must assure that UE and each base station understanding one Cause.

The embodiment of the present invention determines that the mode of the content of the second feedback information is also not necessarily limited to above-mentioned three kinds of modes, can also adopt The content of the second feedback information is determined in other ways（For example, the first feedback information of each base station is represented using bitmap mode Content）As long as base station can be made to send the feelings of the first feedback information according to other base stations of the content aware of second feedback information Condition.

It should be noted that UE determines the content of the second feedback information using which kind of mode, it can provide in the protocol, Each base station is informed after being determined by UE, is determined after can also being consulted by UE and base station, but must assure that UE and each base station reason Solution is consistent.

Further, in step 13, the second feedback information that UE feedbacks are determined is specifically included：

UE passes through Physical Uplink Control Channel（Physical Uplink Control Channel, PUCCH）Or physically Row shared channel（Physical Uplink Shared Channel, PUSCH）Feed back the second feedback information determined.

In the embodiment of the present invention, if UE does not receive the first feedback information that any base station is sent, this method also includes：

The UE determines that the content for the first feedback information not received is NACK.

In the embodiment of the present invention, UE is receiving each base station for the cooperative transmission for participating in the UE（Service base including the UE Stand and at least one cooperative base station）After the first feedback information for same upstream data determined, according to each first feedback letter Breath determine itself whether need carry out the upstream data re-transmission, therefore, UE of embodiment of the present invention sides carry out retransmit judge when, The first feedback information for only needing each base station to determine itself is sent to UE, the friendship without carrying out the first feedback information between base station Mutually, therefore, the time delay of UE uplink data retransmissions will not be increased, the gain of up cooperative transmission is resulted in.

Based on above-described embodiment, the embodiment of the present invention additionally provides the processing method of another feedback information, referring to Fig. 2 institutes Show, this method comprises the following steps：

The upstream data of the UE is detected in step 21, each base station of participation UE cooperative transmission according to the schedule information of the UE, And to the UE send itself determination be used for indicate the first the feedback information whether upstream data correctly transmits；

Wherein, participating in the base station of the cooperative transmission of the UE includes the serving BS and at least one cooperative base station of the UE；

Further, to send itself to UE by PHICH, PDCCH or ePDCCH in itself control channel true for each base station The first fixed feedback information.

In this step, the first feedback information can be ACK/NACK information, if base station can be properly received and correctly solve The upstream data that code UE is sent, then the base station is to UE feeding back ACK information；If base station can not be received or can not to be correctly decoded this up Data, then the base station to UE feed back nack message.Certain first feedback information can also be the information of other forms, as long as can refer to Show whether the upstream data that UE is sent correctly transmits, but need to allow UE to know that what each information represents and contain respectively in advance Justice.

Whether step 22, base station feed back the second feedback information, or the second feedback letter fed back according to the UE according to the UE The content of breath, determines whether the UE can carry out the re-transmission of upstream data；

In this step, if UE uses aforesaid way 1（Directly determine to need to send the determination of the second feedback information to each base station Base station）, then each base station is after the second feedback information is received, according to the content of second feedback information, determines that the UE whether can Carry out the re-transmission of upstream data；If UE just uses aforesaid way 2（I.e. after each first feedback information meets and imposed a condition, it is determined that The second feedback information need not be sent）, then whether the base station can be according to whether detect second feedback information, determines the UE The re-transmission of upstream data can be carried out；

Further, whether the base station feeds back the content of the second feedback information or second feedback information according to the UE, can Determine that other base stations send the situation of the first feedback information.

It is preferred that, in step 22, whether base station feeds back the second feedback information according to the UE, or the fed back according to the UE The content of two feedback informations, determines whether UE can carry out the re-transmission of upstream data, specifically includes：

Whether the second feedback information is fed back according to UE when it is determined that the content of the first feedback information of itself is NACK in base station Or the content of the second feedback information of UE feedbacks, determine whether the UE can carry out the re-transmission of upstream data.

Further, this method also includes：

Base station determines that the UE will not be carried out up when it is determined that the number of retransmissions current UE has reached maximum retransmission The re-transmission of data；

Base station determines that UE will not carry out the weight of upstream data when it is determined that the content of the first feedback information of itself is ACK Pass.

Wherein, if detecting the second feedback information, base station determines that the UE has fed back the second feedback information；If no The second feedback information is detected, then base station determines that the UE does not feed back the second feedback information.

In the embodiment of the present invention, whether base station feeds back the second feedback information according to UE, determines whether the UE can be carried out up The re-transmission of data, specifically includes following six kinds of modes：

If mode B1, UE determines whether to feed back the second feedback information according to condition A,：If not detecting the second feedback Information, then the base station determine the UE serving BS return the first feedback information content be ACK, and UE will not carry out it is up The re-transmission of data；

If mode B2, UE determines whether to feed back the second feedback information according to condition B,：If detecting the second feedback information And the number of retransmissions current UE is less than maximum retransmission, then base station determines the base station of all participation UE cooperative transmission The content of first feedback information is NACK, and the UE can carry out the re-transmission of upstream data；And if not detect second anti- Feedforward information, then it is ACK that base station, which determines that at least one participates in the content of the first feedback information of the base station of the cooperative transmission of the UE, and The UE will not carry out the re-transmission of upstream data；

If mode B3, UE determines whether to send the second feedback information according to condition C,：If detecting the second feedback information, Then base station determines that at least one participates in the content of the first feedback information of the base station of the cooperative transmission of the UE for ACK, and the UE is not The re-transmission of upstream data can be carried out；And if not detecting the second feedback information and the number of retransmissions current UE and being less than maximum Number of retransmissions, then base station determine that the content of the first feedback information of the base station of all participation UE cooperative transmission is NACK, And the UE can carry out the re-transmission of upstream data；

If mode B4, UE determines whether to send the second feedback information according to condition D,：If detecting the second feedback information, Base station determines the content of the first feedback information of the serving BS of the UE and the first feedback information of at least one cooperative base station not Together, and the UE will not carry out the re-transmission of upstream data；

If mode B5, UE determines whether to send the second feedback information according to condition E,：If not detecting the second feedback Information, base station determines the interior of the first feedback information of the serving BS of the UE and the first feedback information of at least one cooperative base station Hold difference, and the UE will not carry out the re-transmission of upstream data；

If mode B6, UE determines whether to send the second feedback information according to condition F,：If not detecting the second feedback Information, base station determines that at least one participates in the base station of the cooperative transmission of the UE and scheduled in corresponding PDCCH or ePDCCH The new transmitting uplink data of the UE, and the UE will not carry out the re-transmission of upstream data.

Further, in step 22, whether base station feeds back the second feedback information according to UE, determines whether the UE can be carried out up The re-transmission of data, in addition to：

Base station is after the second feedback information is detected, according to the content of second feedback information, determines whether the UE can enter The re-transmission of row upstream data.

In the embodiment of the present invention, base station determines whether UE can carry out upstream data according to the content of the second feedback information Retransmit, specifically include following five kinds of modes：

If mode C1, the second feedback information indicate that the content of the first feedback information of each base station is all identical, base station according to The content of the first feedback information of itself, determines that the first feedback information of other base stations is interior with the first feedback information of itself Appearance is identical, and the content of the first feedback information according to each base station, determines whether the UE can carry out the re-transmission of upstream data；

Further, under which, if the content of the first feedback information of itself is ACK, base station determines other base stations The content of first feedback information is ACK, and determines that the UE will not carry out the re-transmission of upstream data；If the first feedback letter of itself The content of breath is NACK and the number of retransmissions current UE is less than maximum retransmission, then the base station determines the first of other base stations The content of feedback information is NACK, and determines that the UE can carry out the re-transmission of upstream data.

If mode C2, the second feedback information indicate that the content part of the first feedback information of each base station is identical, the base station is true Surely the content for participating in the first feedback information of all base stations of the cooperative transmission of the UE is incomplete same, and determines that the UE will not enter The re-transmission of row upstream data.

If mode C3, the second feedback information carry out binary system summation or XOR processing for the first feedback information of each base station Information afterwards, base station determines other base stations according to the content of the second feedback information and the content of the first feedback information of itself The content of first feedback information, and the content of the first feedback information according to each base station, determine whether the UE can carry out line number According to re-transmission；

Further, it is the situation of two which, which is applied to participate in the quantity of the base station of the cooperative transmission of the UE,（I.e. one Serving BS and a cooperative base station）；

Illustrate, it is assumed that the second feedback information is carried out after binary system summation process for the first feedback information of each base station Information, and the content of the second feedback information is ACK, and the content of the first feedback information of serving BS itself is ACK, then：Should Serving BS determines the first of cooperative base station according to the content of second feedback information and the content of the first feedback information of itself The content of feedback information is ACK, and then determines that the UE will not carry out the re-transmission of upstream data；Assuming that the content of the second feedback information For NACK, and the content of the first feedback information of serving BS itself is NACK, then the serving BS is according to second feedback letter The content of the content of breath and the first feedback information of itself, the content for determining the first feedback information of cooperative base station is NACK, is entered And the re-transmission of upstream data can be carried out by determining the UE；

Assuming that the second feedback information carries out the information after XOR processing, and the second feedback for the first feedback information of each base station The content of information is ACK, and the content of the first feedback information of serving BS itself is ACK, then：The serving BS according to this The content of the content of two feedback informations and the first feedback information of itself, the content for determining the first feedback information of cooperative base station is NACK, and then determine that the UE will not carry out the re-transmission of upstream data；Assuming that the content of the second feedback information is NACK, and service base The content of the first feedback information of itself of standing is NACK, then the serving BS according to the content of second feedback information and itself The content of first feedback information, the content for determining the first feedback information of cooperative base station is NACK, and then determines that the UE can be carried out The re-transmission of upstream data.

If mode C4, the second feedback information indicate to be ACK in the presence of the content of at least one the first feedback information,：Base station It is determined that being with the content of at least one the first feedback information in the first feedback information of all base stations of the cooperative transmission of the UE ACK, and the UE will not carry out the re-transmission of upstream data；

If mode C5, the second feedback information indicate that the content of all first feedback informations is NACK and the weights of the UE currently Pass number of times and be less than maximum retransmission, then：Base station determines to participate in the first feedback information of all base stations of the cooperative transmission of the UE Content be NACK, and the UE can carry out the re-transmission of upstream data.

In the embodiment of the present invention, base station determines whether UE can carry out upstream data according to the content of each first feedback information Re-transmission, specifically include：

If the content of each first feedback information is NACK and the number of retransmissions current UE is less than maximum retransmission, Then base station determines that the UE can carry out the re-transmission of upstream data；

If the content of at least one the first feedback information is ACK, base station determines that the UE will not carry out the weight of upstream data Pass.

Further, in step 22, if base station determines that the UE can carry out the re-transmission of upstream data, this method also includes：

The re-transmission timing relationship that base station is arranged according to itself with the UE（timing）, receive the re-transmission data of the UE；

Or base station receives the re-transmission data of the UE according to from the retransfer scheduling information configured as the UE；

Or the retransfer scheduling information that base station is configured according to the serving BS of the UE, receive the re-transmission data of the UE.

Further, after step 22, this method also includes：

If base station is the serving BS of the UE, and the base station determines that the UE can carry out the re-transmission of upstream data, serving BS Pass through descending control signaling（Downlink Control Information, DCI）Dispatch the re-transmission that the UE carries out upstream data；

If base station is the serving BS of the UE, and the base station determines that the UE will not carry out the re-transmission of upstream data, services base Stand and dispatch the new transmitting uplink data of UE progress.

In the embodiment of the present invention, after step 21, this method also includes：

Whether step 23, base station are fed back according to the UE in the second feedback information that the second feedback information or the UE feed back Hold, determine itself whether to need other base stations of the cooperative transmission with participating in the UE in addition to itself to carry out the information of upstream data Interaction.

Further, in step 23, base station determines the information exchange for itself whether needing to carry out upstream data, specifically includes：

If base station is serving BS, and the content of the first feedback information of itself is NACK, and the serving BS is it is determined that deposit When the content of the first feedback information of at least one cooperative base station is ACK, it is determined that needing to carry out the information exchange of upstream data；

If base station is cooperative base station, and the content of the first feedback information of itself is ACK, and the cooperative base station is it is determined that service When the content of first feedback information of base station is NACK, determine itself to need to hand over the information that serving BS carries out upstream data Mutually.

Further, a kind of in the following manner of serving BS determines whether there is the first of at least one cooperative base station The content of feedback information is ACK：

If mode D1, UE determines whether to feed back the second feedback information according to condition B,：If not detecting the second feedback Information, serving BS determines that the UE does not feed back the second feedback information and there is the first feedback information of at least one cooperative base station Content be ACK；

If mode D2, UE determines whether to feed back the second feedback information according to condition C,：If detecting the second feedback information, Serving BS determines to be ACK in the presence of the content of the first feedback information of at least one cooperative base station；

If mode D3, UE determines whether to feed back the second feedback information according to condition D,：If detecting the second feedback information, Serving BS determines to be ACK in the presence of the content of the first feedback information of at least one cooperative base station；

If mode D4, UE determines whether to feed back the second feedback information according to condition E,：If not detecting the second feedback Information, serving BS determines that the UE does not feed back the second feedback information and there is the first feedback information of at least one cooperative base station Content be ACK.

Further, if in step 23, whether serving BS feeds back the second feedback information according to UE, it is determined that in the presence of at least one The content of first feedback information of cooperative base station is ACK, in addition to：

Serving BS is after the second feedback information is detected, according to the content of second feedback information, it is determined that in the presence of at least The content of first feedback information of one cooperative base station is ACK.

In the embodiment of the present invention, serving BS is according to the content of the second feedback information, it is determined whether there is at least one association The content for making the first feedback information of base station is ACK, specifically includes following four mode：

If mode E1, the second feedback information indicate that the content part of the first feedback information of each base station is identical,：Service base Stand and determine to be ACK in the presence of the content of the first feedback information of at least one cooperative base station；

If mode E2, the second feedback information indicate that the content of the first feedback information of each base station is differed entirely,：Service base Stand and determine the content of the first feedback information at least in the presence of a cooperative base station for ACK；

If mode E3, the second feedback information carry out binary system summation or XOR processing for the first feedback information of each base station Information afterwards, then：Serving BS is according to the content of the second feedback information and the content of the first feedback information of itself, it is determined that except certainly The content of the first feedback information of other base stations of the cooperative transmission of the UE is participated in outside body, to determine whether there is at least one The content of first feedback information of cooperative base station is ACK；

It is preferred that, the quantity which is applied to participate in the base station of the cooperative transmission of the UE is two（I.e. one service base Stand and a cooperative base station）Situation.

If mode E4, the second feedback information indicate to be ACK in the presence of the content of at least one the first feedback information,：Base station It is determined that the content in the presence of the first feedback information of at least one cooperative base station is ACK.

Further, in step 23, whether cooperative base station feeds back the second feedback information according to UE, determines the first of serving BS The content of feedback information is NACK, is specifically included：

If cooperative base station determines that UE determines whether to feed back the second feedback information according to condition A,：If detecting the second feedback Information（I.e. the UE has fed back the second feedback information）, cooperative base station determines that the content of the first feedback information of serving BS is NACK。

Further, in step 23, whether cooperative base station feeds back the second feedback information according to the UE, determines the of serving BS The content of one feedback information is NACK, in addition to：

Cooperative base station, according to the content of second feedback information, determines serving BS after the second feedback information is detected The first feedback information content be NACK.

In the embodiment of the present invention, cooperative base station determines the first feedback of serving BS according to the content of the second feedback information Whether the content of information is NACK, specifically includes following three kinds of modes：

If mode F1, the second feedback information indicate that the content part of the first feedback information of each base station is identical,：Cooperate base The content and the content of the first feedback information of itself stood according to the second feedback information, it is determined that participating in the association of the UE in addition to itself With transmission other base stations the first feedback information content, with determine serving BS the first feedback information content whether be NACK；

If mode F2, the second feedback information indicate that the content of the first feedback information of each base station is differed entirely,：Cooperate base Stand determine serving BS the first feedback information content be NACK；

If mode F3, the second feedback information carry out binary system summation or XOR processing for the first feedback information of each base station Information afterwards, then：Cooperative base station is according to the content of the second feedback information and the content of the first feedback information of itself, it is determined that except certainly The content of the first feedback information of other base stations of the cooperative transmission of the UE is participated in outside body, to determine that the first of serving BS is anti- Whether the content of feedforward information is NACK；

Further, in step 23, if serving BS determines the information exchange for needing to carry out upstream data, this method is also wrapped Include：Serving BS initiates the information interactive process of upstream data to any first feedback information item for ACK cooperative base station；

If any cooperative base station determines the information exchange for needing to carry out upstream data, this method also includes：The cooperative base station The information interactive process of upstream data is initiated to serving BS.

Further, if base station is cooperative base station, and determine that itself need not carry out the information of upstream data with serving BS Interaction, this method also includes：

The upstream data that cooperative base station release is detected；Or

When it is determined that the UE will not carry out the re-transmission of upstream data, the upstream data that cooperative base station release is detected.

Wherein, if the content of the first feedback information of the cooperative base station is NACK, the cooperative base station need not be with service Base station carries out the information exchange of upstream data；If or the content of the first feedback information of the cooperative base station and the serving BS is equal For ACK, then the information exchange that the cooperative base station need not be with serving BS progress upstream data.

Further, if base station is UE serving BS, this method also includes：

The schedule information of the UE is sent to each cooperative base station by serving BS before the upstream data of the UE is detected.

Further, if the UE has fed back the second feedback information, this method also includes：

Each base station receives the second feedback information of UE feedbacks by PUCCH or PUSCH.

In the embodiment of the present invention, participate in whether each base station of UE cooperative transmission can feed back the second feedback according to the UE Information or the content according to the UE the second feedback informations fed back, determine whether the UE can be retransmitted, therefore, for each ginseng For the base station of the cooperative transmission of the UE, it can determine whether that the UE whether can without carrying out any interacting for information with other base stations Retransmitted；

Further, each base station whether can have been fed back according to the UE the second feedback information or according to the UE feed back it is second anti- Whether the content of feedforward information, determine itself to need other base stations of the cooperative transmission with participating in the UE to carry out the information of upstream data Interaction, therefore, for the base station of each participation UE cooperative transmission, the friendship without carrying out any information with other base stations It mutually can determine whether to need to carry out interacting for the upstream data with other base stations.

Below by two specific embodiments, in the processing method of the feedback information of the embodiment of the present invention, base station and UE Between interaction be described in detail.

In embodiment 1, the present embodiment, it is assumed that have two base stations（Serving BS and a cooperative base station）Participate in the upper of the UE Row cooperative transmission, shown in Figure 3, the interaction between serving BS, cooperative base station and UE comprises the following steps：

The schedule information interaction of the UE transmitting uplink datas to cooperative base station, and is dispatched the UE by step 301, serving BS Carry out transmitting uplink data；

Step 302, UE carry out transmitting uplink data according to the schedule information of serving BS；

Step 303, serving BS and cooperative base station detect the upstream data that the UE is sent according to schedule information respectively, according to Whether the upstream data correctly transmits, and obtains corresponding first ACK/NACK information（That is the first feedback information）；

Step 304, serving BS and cooperative base station are respectively by the PHICH channels in respective control channel, by what is obtained First ACK/NACK information is notified to UE；

Step 305, UE receive corresponding first from the PHICH channels of serving BS and cooperative base station respective cell respectively ACK/NACK information；

Step 306, UE are according to two the first ACK/NACK information received, it is determined whether need to carry out data re-transmission, And determine the need for the corresponding 2nd ACK/NACK information of feedback（That is the second feedback information）；

Specifically include following three kinds of situations：

Situation a, hypothesis current service cell（The cell that i.e. serving BS is controlled）And cooperation cell（I.e. cooperative base station is controlled Cell）The first ACK/NACK information be respectively：ACK、ACK（Or ACK, NACK）, then the UE determine need not enter line number According to retransmitting and need not feed back the 2nd ACK/NACK information；

Situation b, the first ACK/NACK information for assuming current service cell and cooperation cell are respectively：NACK, ACK, then The UE determines that data re-transmission need not be carried out and needs to feed back the 2nd ACK/NACK information；

Situation c, the first ACK/NACK information for assuming current service cell and cooperation cell are respectively：NACK, NACK, then The UE is determined to need to carry out data re-transmission and is needed to feed back the 2nd ACK/NACK information；

If step 307, the UE determine to need to carry out data re-transmission, arrange respectively according to serving BS and cooperative base station Re-transmission timing relationship（Such as after 4 subframes of the first ACK/NACK information are received）, up number is carried out in corresponding resource According to re-transmission.

If step 308, the UE determine to need to feed back the 2nd ACK/NACK information（Such as situation b and situation c）, then according to reception The content of two the first ACK/NACK information arrived, determines the content of the 2nd ACK/NACK information, and by the 2nd ACK/NACK Information gives each base station by PUCCH feedback；Specifically：

Assuming that the first ACK/NACK information of current service cell and cooperation cell is respectively：NACK, ACK, then the UE is anti- 2nd ACK/NACK information of feedback is ACK；

Assuming that the first ACK/NACK information of current service cell and cooperation cell is respectively：NACK, NACK, then the UE is anti- 2nd ACK/NACK information of feedback is NACK.

The 2nd ACK/NACK information that step 309, serving BS feed back according to UE, determines whether UE can carry out upstream data Re-transmission, and determine the need for carry out base station between information exchange, so that it is determined that the scheduling and reception of the follow-up data of the UE； Specifically：

If the 2nd ACK/NACK information of UE feedbacks is ACK,：Serving BS determines that the UE will not carry out upstream data Retransmit, and determine to need to carry out the information exchange between cooperative base station, and can continue to dispatch UE new data transmission；Enter one Step, follow-up service base station can initiate the information exchange with the upstream data of cooperative base station, and can dispatch the new number of the UE According to transmission；

If the 2nd ACK/NACK information of UE feedbacks is NACK,：Serving BS determines that the UE can carry out upstream data Retransmit, and determine that the information exchange between cooperative base station need not be carried out, and cannot continue to dispatch UE new data transmission；Enter One step, serving BS is according to the re-transmission timing relationship arranged with UE（Such as after 4 subframes of the first ACK/NACK information are received）, Receive the re-transmission data of the UE.

The 2nd ACK/NACK information that step 310, cooperative base station are fed back according to the UE, determines whether UE carries out data weight Pass, and determine the need for carrying out the information exchange between base station, so that it is determined that UE follow-up data scheduling and reception；Specifically：

If the 2nd ACK/NACK information of UE feedbacks is ACK,：Cooperative base station determines that UE does not carry out data re-transmission, and It is determined that needing to carry out the information exchange between cooperative base station, and it may continue to dispatch UE new data transmission；Further, subsequently Cooperative base station can wait or initiate the information exchange with the upstream data of serving BS, and be discharged after information exchange on this Row data；

If the 2nd ACK/NACK information of UE feedbacks is NACK,：Cooperative base station determines that UE can carry out data re-transmission, and really Surely the information exchange between cooperative base station need not be carried out, and will not continue to dispatch UE new data transmission；Further, cooperate base Stand according to the re-transmission timing relationship arranged with UE（Such as after 4 subframes of the first ACK/NACK information are received）, receive the UE's Retransmit data.

In the present embodiment, step 309 is synchronous with step 310 to be carried out.

Embodiment 2, hypothesis have three base stations（Serving BS and two cooperative base stations）The up cooperative transmission of the UE is participated in, Shown in Figure 4, the interaction between serving BS, cooperative base station and UE comprises the following steps：

The schedule information interaction of the UE transmitting uplink datas to each cooperative base station, and is dispatched UE by step 401, serving BS Carry out transmitting uplink data.

Step 402, UE carry out transmitting uplink data according to the schedule information of serving BS；

Step 403, serving BS and each cooperative base station detect the upstream data that the UE is sent, root according to schedule information respectively Whether correctly transmitted according to the upstream data, obtain corresponding first ACK/NACK information（That is the first feedback information）；

Step 404, serving BS and each cooperative base station by the PHICH channels in respective control channel, will be obtained respectively The first ACK/NACK information notify to UE；

Step 405, UE receive corresponding first ACK/NACK letters from the PHICH channels of three base stations respective cell respectively Breath；

Step 406, UE are according to three the first ACK/NACK information received, it is determined whether need to carry out the weight of data Pass, and determine the need for the corresponding 2nd ACK/NACK information of feedback（That is the second feedback information）；

Specifically include following two situations：

If including ACK in the first ACK/NACK information that situation one, UE are received, UE need not carry out the weight of upstream data Pass；Otherwise, UE needs to carry out the re-transmission of upstream data；

If situation two, the first ACK/NACK information of each cooperation cell are identical with serving cell, second need not be fed back ACK/NACK information；Otherwise, it is necessary to feed back the 2nd ACK/NACK information.

Assuming that when the first ACK/NACK information of first three base station is NACK, ACK, ACK respectively, then the UE need not be carried out The re-transmission of upstream data, but need to feed back the 2nd ACK/NACK information.

Step 407, UE determine the 2nd ACK/NACK information according to the content of three the first ACK/NACK information received Content, and give each base station by PUCCH feedback by the 2nd ACK/NACK information；

Specifically, according to the corresponding relation of table 1, now the 2nd ACK/NACK information should be 10.

The 2nd ACK/NACK information that step 408, serving BS feed back according to UE, determines whether UE carries out data re-transmission, And determine the need for carrying out the information exchange between base station, so that it is determined that UE follow-up data scheduling and reception；Specifically：

Because the 2nd ACK/NACK information is 10, and the first ACK/NACK information of itself is NACK, then：Serving BS is true First ACK/NACK information of fixed two cooperative base stations is respectively ACK, ACK, and then, the serving BS determines that UE does not enter line number According to re-transmission, and need and the correct upstream data of cooperative base station alternating transmission.

The 2nd ACK/NACK information that step 409, cooperative base station are fed back according to UE, determines whether UE can carry out upstream data Re-transmission, and determine the need for carry out base station between information exchange, so that it is determined that UE follow-up data scheduling and receive；Specifically 's：

Because the 2nd ACK/NACK information is 10, and the first ACK/NACK information of itself is ACK, then：Cooperative base station is true The first ACK/NACK information of other fixed two base stations is respectively NACK（Serving BS）、ACK（Another cooperative base station）, enter And, the cooperative base station determines that UE does not carry out data re-transmission, and needs and the correct upstream data of serving BS alternating transmission.

Step 410, serving BS are to the first cooperative base station（Or second cooperative base station）Information exchange request is initiated, with first Cooperative base station（Or second cooperative base station）Interaction of user data, the first cooperative base station（Or second cooperative base station）In interaction completion Afterwards, the user data is discharged；

Accordingly, the second cooperative base station（Or first cooperative base station）Within the stand-by period of setting, serving BS is not received Information exchange request, then directly discharge the user data.

In the present embodiment, step 408 is synchronous with step 409 to be carried out.

Above method handling process can realize that the software program can be stored in storage medium with software program, when When the software program of storage is called, above method step is performed.

Based on same inventive concept, a kind of user equipment is additionally provided in the embodiment of the present invention, due to the user equipment solution Certainly the principle of problem is similar to the method shown in Fig. 1, therefore the implementation of the user equipment may refer to the reality of the method shown in Fig. 1 Apply, repeat part and repeat no more.

It is shown in Figure 5, a kind of user equipment provided in an embodiment of the present invention, including：

Receiving module 51, for receiving the first feedback letter that the base station for the cooperative transmission for each participating in the UE is determined respectively Breath, wherein, the first feedback information is used to indicate whether the same upstream data that UE is sent correctly transmits, and the collaboration for participating in the UE is passed Defeated base station includes the serving BS and at least one cooperative base station of the UE；

First determining module 52, for the content according to each first feedback information, it is determined whether need to carry out upstream data Re-transmission；

Second determining module 53, for the content according to each first feedback information, it is determined whether need feedback second to feed back Information, and after it is determined that needing the second feedback information of feedback, second feedback information is fed back, so that any base station is according to itself No second feedback information that fed back can know that other base stations that cooperative transmission is participated in addition to itself send the first feedback information Situation；Or according to the content of each first feedback information, the content of the second feedback information is determined, and feed back second feedback letter Breath, so that any base station can know that other base stations send the situation of the first feedback information according to the content of the second feedback information.

Further, the first determining module 52 specifically for：If the content for the first feedback information that all base stations are returned is NACK, and number of retransmissions current UE is less than maximum retransmission, it is determined that needing to carry out the re-transmission of upstream data；Otherwise, it determines The re-transmission of upstream data need not be carried out.

Further, the first determining module 52 is additionally operable to：

After it is determined that needing to carry out the re-transmission of upstream data, according to the re-transmission timing relationship arranged with each base station, carry out The re-transmission of upstream data；Or

Line number in the retransfer scheduling information that the retransfer scheduling information or serving BS configured according to each base station is configured, progress According to re-transmission.

Further, the second determining module 53 specifically for：

It is determined that each first feedback information is met after imposing a condition, it is determined that the second feedback information need not be fed back；Otherwise, really Surely need to feed back the second feedback information；Wherein, impose a condition including one kind in following condition：

The content for the first feedback information that serving BS is returned is ACK；

The content for the first feedback information that at least one base station is returned is ACK；

The content for the first feedback information that all base stations are returned is NACK；

The first feedback information all same that the first feedback information that serving BS is returned is returned with all cooperative base stations；

The first feedback information that serving BS is returned is different from the first feedback information that at least one cooperative base station is returned；

It is anti-that UE receives first from physical downlink control channel PDCCH or enhanced Physical Downlink Control Channel ePDCCH Feedforward information, and at least one base station scheduled the new transmitting uplink data of the UE in corresponding PDCCH or ePDCCH.

Further, the second determining module 53 is additionally operable to：After it is determined that needing the second anti-storehouse information of feedback, and should in feedback Before second feedback information, according to the content of each first feedback information received, the content of the second feedback information is determined.

Further, the second determining module 53 specifically for：

By each first feedback information received carry out binary system summation or XOR processing, and using obtained information as The content of second feedback information；Or

It is according to the content in all first feedback informations received with the presence or absence of at least one the first feedback information ACK, determines the content of the second feedback information；Or

According to the content of each first feedback information, whether all identical or part is identical or differs entirely, determines the second feedback The content of information.

Further, the first determining module 52 is additionally operable to：If it is first anti-that receiving module 51 does not receive that any base station sends Feedforward information, it is determined that the content for the first feedback information not received is NACK；

Second determining module 53 is additionally operable to：If receiving module 51 does not receive the first feedback information that any base station is sent, It is determined that the content for the first feedback information not received is NACK.

Further, receiving module 51 specifically for：Received by each base station corresponding PHICH, PDCCH or ePDCCH The first feedback information that the base station is sent.

Further, the second determining module 53 specifically for：The second feedback information determined by PUCCH or PUSCH feedbacks.

Based on same inventive concept, a kind of base station of participation UE cooperative transmission is additionally provided in the embodiment of the present invention, by The principle for solving problem in the base station is similar to the method shown in Fig. 2, therefore the implementation of the base station may refer to side shown in Fig. 2 The implementation of method, repeats part and repeats no more.

It is shown in Figure 6, the base station of participation UE provided in an embodiment of the present invention cooperative transmission, including：

First processing module 61, for the schedule information according to UE, detects the upstream data of the UE, and send certainly to the UE What body was determined is used to indicate the first feedback information whether upstream data correctly transmits；

Second processing module 62, for whether feeding back the second feedback information according to the UE, or the fed back according to the UE The content of two feedback informations, determines whether the UE can carry out the re-transmission of upstream data.

Further, Second processing module 62 specifically for：

It is determined that the first feedback information of itself content be NACK when, according to UE whether feed back the second feedback information or The content of second feedback information of UE feedbacks, determines whether UE carries out the re-transmission of upstream data.

Further, Second processing module 62 is additionally operable to：

When it is determined that the content of the first feedback information of itself is ACK, determine that UE will not carry out the re-transmission of upstream data；

When it is determined that number of retransmissions current UE has reached maximum retransmission, determine that UE will not carry out the weight of upstream data Pass.

Further, Second processing module 62 specifically for：

If the content for the first feedback information that UE is returned in serving BS does not feed back the second feedback information when being ACK,：If The second feedback information is not detected, the content for determining the first feedback information that serving BS is returned is ACK, and UE will not carry out The re-transmission of upstream data；

If UE at least one participate in the cooperative transmission of the UE base station return the first feedback information content for ACK not The second feedback information is fed back, then：If detecting the second feedback information and number of retransmissions current UE being less than maximum retransmission, really The content of first feedback information of the base station of fixed all participation UE cooperative transmission is NACK, and UE can carry out upstream data Re-transmission；If not detecting the second feedback information, determine that at least one participates in the first anti-of the base station of the cooperative transmission of the UE The content of feedforward information is ACK, and UE will not carry out the re-transmission of upstream data；

If UE is when the content of the first feedback information of the base station feedback of all participation UE cooperative transmission is NACK The second feedback information is not fed back, then：If detecting the second feedback information, at least one base for participating in the cooperative transmission of the UE is determined The content for the first feedback information stood is ACK, and UE will not carry out the re-transmission of upstream data；If not detecting the second feedback letter Cease and number of retransmissions current UE is less than maximum retransmission, determine that the first of the base station of all participation UE cooperative transmission is anti- The content of feedforward information is NACK, and UE can carry out the re-transmission of upstream data；

If the first feedback information that UE is returned in serving BS and the first feedback information that all cooperative base stations are returned are homogeneous The second feedback information is not fed back simultaneously, then：If detecting the second feedback information, determine the first feedback information of serving BS with extremely The content of first feedback information of a few cooperative base station is different, and UE will not carry out the re-transmission of upstream data；

If the first feedback information that UE is returned in the first feedback information that serving BS is returned with least one cooperative base station Difference does not feed back the second feedback information, determines the first feedback information of serving BS and the first feedback of at least one cooperative base station The content of information is different, and UE will not carry out the re-transmission of upstream data；

If UE is receiving the first feedback information from PDCCH or ePDCCH, and at least one participates in the UE cooperative transmissions Base station do not feed back the second feedback letter when the new transmitting uplink data of the UE is scheduled in corresponding PDCCH or ePDCCH Breath, determines that at least one participates in the base station of the cooperative transmission of the UE and scheduled the UE's in corresponding PDCCH or ePDCCH New transmitting uplink data, and UE will not carry out the re-transmission of upstream data.

Further, Second processing module 62 is additionally operable to：After the second feedback information is detected, according to the second feedback information Content, determines whether UE can carry out the re-transmission of upstream data.

Further, Second processing module 62 specifically for：

If the second feedback information indicates that the content of the first feedback information of each base station is all identical, anti-according to itself first The content of feedforward information, determines that the first feedback information of other base stations is identical with the content of the first feedback information of itself, and root According to the content of the first feedback information of each base station, determine whether UE can carry out the re-transmission of upstream data；

If the second feedback information indicates that the content part of the first feedback information of each base station is identical, it is determined that participating in the association of the UE Content with the first feedback information of all base stations of transmission is incomplete same, and determines that UE will not carry out the weight of upstream data Pass；

If the second feedback information carries out the letter after binary system summation or XOR processing for the first feedback information of each base station Breath, according to the content of the second feedback information and the content of the first feedback information of itself, determines the first feedback letter of other base stations The content of breath, and according to the content of each first feedback information, determine whether UE can carry out the re-transmission of upstream data；

If the content that the second feedback information indicates to have at least one the first feedback information is ACK, it is determined that participating in the UE's The content of at least one the first feedback information is ACK in first feedback information of all base stations of cooperative transmission, and UE will not Carry out the re-transmission of upstream data；

If the second feedback information indicates that the content of all first feedback informations is NACK and number of retransmissions current UE is small In maximum retransmission, it is determined that the content for participating in the first feedback information of all base stations of the cooperative transmission of the UE is NACK, And UE can carry out the re-transmission of upstream data.

Further, Second processing module 62 is additionally operable to：

If it is determined that UE can carry out the re-transmission of upstream data, according to the re-transmission timing relationship that itself arranges with UE, receive UE's Retransmit data；Or according to from the retransfer scheduling information configured as UE, receive UE re-transmission data；Or according to UE service The retransfer scheduling information of base station configuration, receives UE re-transmission data.

Further, if the serving BS as UE, and determine that UE can carry out the re-transmission of upstream data, Second processing module certainly 62 are additionally operable to：The re-transmission that UE carries out upstream data is dispatched by descending control signaling DCI；

If from the serving BS as UE, and determining that UE will not carry out the re-transmission of upstream data, Second processing module 62 is also For：Dispatch UE and carry out new transmitting uplink data.

Further, the base station also includes：3rd processing module 63, for according to UE whether feed back the second feedback information or UE feedback the second feedback information content, determine itself whether to need with addition to itself participate in UE cooperative transmission other Base station carries out the information exchange of upstream data.

Further, the 3rd processing module 63 specifically for：

If certainly as serving BS, and the content of the first feedback information of itself is NACK, it is determined that in the presence of at least one When the content of first feedback information of cooperative base station is ACK, it is determined that needing to carry out the information exchange of upstream data；

If from as cooperative base station, and the content of the first feedback information of itself is ACK, it is determined that serving BS first When the content of feedback information is NACK, the information exchange for itself needing to carry out upstream data with serving BS is determined.

Further, if oneself determines to need the information for carrying out upstream data to hand over as serving BS, and the 3rd processing module 63 Mutually, then the 3rd processing module 63 is additionally operable to：To any first feedback information item upstream data is initiated for ACK cooperative base station Information interactive process；

If from as cooperative base station, and the 3rd processing module 63 determines the information exchange that needs to carry out upstream data, then the Three processing modules 63 are additionally operable to：The information interactive process of upstream data is initiated to serving BS.

Further, if oneself is as cooperative base station, and determine that the information exchange of upstream data need not be carried out with serving BS, 3rd processing module 63 is additionally operable to：Discharge the upstream data detected；Or determine that UE will not be carried out in Second processing module 62 During the re-transmission of upstream data, the upstream data detected is discharged.

Further, if from as serving BS, first processing module 61 is additionally operable to：Before detection UE upstream data, UE schedule information is sent to each cooperative base station.

Further, first processing module 61 specifically for：Pass through PHICH, PDCCH or ePDCCH in itself control channel The first feedback information of itself determination is sent to UE.

Further, Second processing module 62 specifically for：The second feedback of UE feedbacks is received by PUCCH or PUSCH Information.

Based on above-described embodiment, the embodiment of the present invention additionally provides a kind of communication system, shown in Figure 7, the communication system System includes：

UE71, for receiving the first feedback information that the base station for the cooperative transmission for each participating in the UE is determined respectively；According to The content of each first feedback information, it is determined whether need to carry out the re-transmission of upstream data；According to the content of each first feedback information, Determine the need for feeding back the second feedback information, and after it is determined that needing the second feedback information of feedback, feed back second feedback letter Breath, so that any base station can know the participation cooperative transmission in addition to itself according to whether the UE has fed back the second feedback information Other base stations send the situation of the first feedback information；Or according to the content of each first feedback information, determine the second feedback information Content, and second feedback information is fed back, so that any base station can know other bases according to the content of the second feedback information Stand and send the situation of the first feedback information；

Base station 72, for the schedule information according to UE, detects UE upstream data, and send being used for for itself determination to UE Indicate the first feedback information whether upstream data correctly transmits；Whether the second feedback information is fed back according to UE, or according to UE The content of second feedback information of feedback, determines whether UE can carry out the re-transmission of upstream data.

In the embodiment of the present invention, participating in the base station of UE cooperative transmission includes serving BS and at least one cooperation of the UE Base station.

The embodiment of the present invention can be interacted between base station have any problem in the case of（The time delay of interaction is larger between such as base station）, ACK/NACK cooperations between base station are completed by UE, so as to obtain the gain of up cooperative transmission, the interaction between base station are reduced, It will not increase the time delay of UE uplink data retransmissions, and the influence also very little of the scheduling delay for the upstream data new UE.

It should be understood by those skilled in the art that, embodiments of the invention can be provided as method, system or computer program Product.Therefore, the present invention can be using the reality in terms of complete hardware embodiment, complete software embodiment or combination software and hardware Apply the form of example.Moreover, the present invention can be used in one or more computers for wherein including computer usable program code Usable storage medium（Including but not limited to magnetic disk storage, CD-ROM, optical memory etc.）The computer program production of upper implementation The form of product.

The present invention is with reference to method according to embodiments of the present invention, equipment（System）And the flow of computer program product Figure and/or block diagram are described.It should be understood that can be by every first-class in computer program instructions implementation process figure and/or block diagram Journey and/or the flow in square frame and flow chart and/or block diagram and/or the combination of square frame.These computer programs can be provided The processor of all-purpose computer, special-purpose computer, Embedded Processor or other programmable data processing devices is instructed to produce A raw machine so that produced by the instruction of computer or the computing device of other programmable data processing devices for real The device for the function of being specified in present one flow of flow chart or one square frame of multiple flows and/or block diagram or multiple square frames.

These computer program instructions, which may be alternatively stored in, can guide computer or other programmable data processing devices with spy Determine in the computer-readable memory that mode works so that the instruction being stored in the computer-readable memory, which is produced, to be included referring to Make the manufacture of device, the command device realize in one flow of flow chart or multiple flows and/or one square frame of block diagram or The function of being specified in multiple square frames.

These computer program instructions can be also loaded into computer or other programmable data processing devices so that in meter Series of operation steps is performed on calculation machine or other programmable devices to produce computer implemented processing, thus in computer or The instruction performed on other programmable devices is provided for realizing in one flow of flow chart or multiple flows and/or block diagram one The step of function of being specified in individual square frame or multiple square frames.

, but those skilled in the art once know basic creation although preferred embodiments of the present invention have been described Property concept, then can make other change and modification to these embodiments.So, appended claims are intended to be construed to include excellent Select embodiment and fall into having altered and changing for the scope of the invention.

Obviously, those skilled in the art can carry out the essence of various changes and modification without departing from the present invention to the present invention God and scope.So, if these modifications and variations of the present invention belong to the scope of the claims in the present invention and its equivalent technologies Within, then the present invention is also intended to comprising including these changes and modification.

Claims

1. a kind of processing method of feedback information, it is characterised in that this method includes：

User equipment (UE) receives the first feedback information that the base station for the cooperative transmission for each participating in the UE is determined respectively, wherein, institute Stating the first feedback information is used to indicate whether the same upstream data that the UE is sent correctly transmits, the collaboration of the participation UE The base station of transmission includes the serving BS and at least one cooperative base station of the UE；

The UE is according to the content of each first feedback information, it is determined whether need to feed back the second feedback information, and it is determined that needing Feed back after the second feedback information, feed back second feedback information, so that whether any base station has fed back according to the UE Two feedback informations can know that other base stations for the cooperative transmission that the UE is participated in addition to itself send the feelings of the first feedback information Condition；Or the UE determines the content of the second feedback information according to the content of each first feedback information, and feed back second feedback Information, so that other base stations transmission first according to being known the content of second feedback information of any base station is anti- The situation of feedforward information.

2. the method as described in claim 1, it is characterised in that the UE determines the need for carrying out the weight of the upstream data Pass, including：

If the content for the first feedback information that all base stations are returned is NACK, and the number of retransmissions current UE is less than Maximum retransmission, the UE determines to need to carry out the re-transmission of the upstream data；

Otherwise, the UE determines that the re-transmission of the upstream data need not be carried out.

3. method as claimed in claim 2, it is characterised in that the UE determine to need the re-transmission for carrying out the upstream data it Afterwards, methods described also includes：

The UE carries out the re-transmission of the upstream data according to the re-transmission timing relationship arranged with each base station；Or

The retransfer scheduling information that the retransfer scheduling information or the serving BS that the UE is configured according to each base station are configured, Carry out the re-transmission of the upstream data.

4. the method as described in claim 1, it is characterised in that the UE determines the need for feeding back the second feedback information, tool Body includes：

The UE is it is determined that each first feedback information is met after imposing a condition, it is determined that the second feedback information need not be fed back；Otherwise, The UE determines to need to feed back the second feedback information；

Wherein, it is described to impose a condition including one kind in following condition：

The content for the first feedback information that the serving BS is returned is ACK；

The content for the first feedback information that at least one described base station is returned is ACK；

The first feedback information all same that the first feedback information that the serving BS is returned is returned with all cooperative base stations；

The first feedback information that the first feedback information that the serving BS is returned is returned with least one described cooperative base station is not Together；

It is anti-that the UE receives first from physical downlink control channel PDCCH or enhanced Physical Downlink Control Channel ePDCCH Feedforward information, and at least one described base station scheduled the new upstream data biography of the UE in corresponding PDCCH or ePDCCH It is defeated.

5. the method as described in claim 1, it is characterised in that after UE determinations need the second feedback information of feedback, And before the UE feeds back second feedback information, methods described also includes：

The UE determines the content of second feedback information according to the content of each first feedback information received.

6. the method as described in claim 1 or 5, it is characterised in that the UE is according to each first feedback information received Content, determines the content of second feedback information, specifically includes：

Each first feedback information received is carried out the UE into binary system summation or XOR is handled, and obtained information is made For the content of second feedback information；Or

The UE according to being with the presence or absence of the content of at least one the first feedback information in all first feedback informations received ACK, determines the content of second feedback information；Or

Whether all identical or parts are identical or differ entirely according to the content of each first feedback information by the UE, determine described the The content of two feedback informations.

7. the method as described in claim 1, it is characterised in that it is first anti-that the UE receives that each base station sends respectively Feedforward information is specifically included：

The UE by each base station corresponding physical hybrid automatic repeat request indicator channel PHICH, PDCCH or EPDCCH receives the first feedback information of base station transmission.

8. the method as described in claim 1 or 5, it is characterised in that the UE feeds back second feedback information, specific bag Include：

The UE feeds back second feedback letter by Physical Uplink Control Channel PUCCH or Physical Uplink Shared Channel PUSCH Breath.

9. the method as described in any one of Claims 1 to 5, it is characterised in that methods described also includes：If the UE is not received The first feedback information sent to any base station, the UE determines that the content for the first feedback information not received is NACK。

10. a kind of processing method of feedback information, it is characterised in that this method includes：

Each base station of cooperative transmission of user equipment (UE) is participated according to the schedule information of the UE, the upper line number of the UE is detected According to, and to the UE send itself determination be used for indicate the first the feedback information whether upstream data correctly transmits, its In, participating in the base station of UE cooperative transmission includes the serving BS and at least one cooperative base station of the UE；

Whether the base station feeds back the second feedback information according to the UE, or according to the UE the second feedback informations fed back Content, determines whether the UE can carry out the re-transmission of the upstream data；Whether wherein described UE feeds back the second feedback information Determined by the UE according to the content of each first feedback information；The content of second feedback information of the UE feedbacks is by the UE Determined according to the content of each first feedback information.

11. method as claimed in claim 10, it is characterised in that the base station whether the second feedback letter is fed back according to the UE Breath, or according to the content of the UE the second feedback informations fed back, determine whether the UE can carry out the upstream data Retransmit, specifically include：

Whether the second feedback is fed back according to the UE when it is determined that the content of the first feedback information of itself is NACK in the base station The content of second feedback information of information or UE feedbacks, determines whether the UE can carry out the weight of the upstream data Pass.

12. method as claimed in claim 11, it is characterised in that methods described also includes：

The base station determines that the UE will not be carried out described up when it is determined that the content of the first feedback information of itself is ACK The re-transmission of data；

The base station determines that the UE will not be carried out when it is determined that the number of retransmissions current UE has reached maximum retransmission The re-transmission of the upstream data.

13. the method as described in claim 10 or 11, it is characterised in that it is anti-whether the base station feeds back second according to the UE Feedforward information, determines whether the UE can carry out the re-transmission of the upstream data, specifically includes：

If the content for the first feedback information that the UE is returned in the serving BS does not feed back the second feedback information when being ACK, Then：The base station determines the first feedback information that the serving BS is returned when not detecting second feedback information Content be ACK, and the UE will not carry out the re-transmission of the upstream data；

If the content for the first feedback information that the UE is returned at least one base station for participating in the cooperative transmission of the UE is ACK The second feedback information is not fed back, then：The base station is detecting second feedback information and the number of retransmissions current UE During less than maximum retransmission, the content for determining the first feedback information of the base station of all participation UE cooperative transmission is NACK, and the UE can carry out the re-transmission of the upstream data；The base station when not detecting second feedback information, Determine that at least one participates in the content of the first feedback information of the base station of the cooperative transmission of the UE for ACK, and the UE will not enter The re-transmission of the row upstream data；

If the UE is when the content of the first feedback information of the base station feedback of all participation UE cooperative transmission is NACK The second feedback information is not fed back, then：The base station determines that at least one participates in the UE when detecting second feedback information The content of the first feedback information of base station of cooperative transmission be ACK, and the UE will not carry out the re-transmission of the upstream data； The base station when not detecting second feedback information and the number of retransmissions current UE and being less than maximum retransmission, The content for determining the first feedback information of the base station of all participation UE cooperative transmission is NACK, and the UE can carry out institute State the re-transmission of upstream data；

If the first feedback that the UE is returned in the first feedback information that the serving BS is returned with all cooperative base stations The second feedback information is not fed back during information all same, then：The base station is when detecting second feedback information, it is determined that described First feedback information of serving BS is different from the content of the first feedback information of at least one cooperative base station, and the UE will not Carry out the re-transmission of the upstream data；

If the first feedback information and the first of at least one cooperative base station return that the UE is returned in the serving BS Feedback information difference does not feed back the second feedback information, then：The base station when not detecting second feedback information, it is determined that First feedback information of the serving BS is different from the content of the first feedback information of at least one cooperative base station, and the UE The re-transmission of the upstream data will not be carried out；

If the UE is receiving the first feedback information from PDCCH or ePDCCH, and at least one participates in the UE cooperative transmissions Base station do not feed back the second feedback letter when the new transmitting uplink data of the UE is scheduled in corresponding PDCCH or ePDCCH Breath, then：The base station determines that at least one participates in the cooperative transmission of the UE when not detecting second feedback information Base station scheduled the new transmitting uplink data of the UE in corresponding PDCCH or ePDCCH, and the UE will not carry out institute State the re-transmission of upstream data.

14. method as claimed in claim 10, it is characterised in that the base station whether the second feedback letter is fed back according to the UE Breath, determines whether the UE can carry out the re-transmission of the upstream data, in addition to：

The base station, according to the content of second feedback information, determines the UE after second feedback information is detected Whether the re-transmission of the upstream data can be carried out.

15. the method as described in claim 10 or 14, it is characterised in that the base station is according in second feedback information Hold, determine whether the UE can carry out the re-transmission of the upstream data, specifically include：

If second feedback information indicates that the content of the first feedback information of each base station is all identical, the base station is according to itself The first feedback information content, it is determined that participating in the first feedback letter of other base stations of the cooperative transmission of the UE in addition to itself Breath is identical with the content of the first feedback information of itself, and the content of the first feedback information according to each base station, it is determined that described Whether UE can carry out the re-transmission of the upstream data；

If second feedback information indicates that the content part of the first feedback information of each base station is identical, the base station determines to participate in The content of first feedback information of all base stations of the cooperative transmission of the UE is incomplete same, and determines that the UE will not carry out institute State the re-transmission of upstream data；

If second feedback information carries out the letter after binary system summation or XOR processing for the first feedback information of each base station Breath, the base station according to the content of second feedback information and the content of the first feedback information of itself, it is determined that it is described other The content of first feedback information of base station, and according to the content of each first feedback information, determine whether the UE can be carried out described The re-transmission of upstream data；

If second feedback information indicates to be ACK in the presence of the content of at least one the first feedback information, the base station determines ginseng Content with least one the first feedback information in the first feedback information of all base stations of the cooperative transmission of the UE is ACK, And the UE will not carry out the re-transmission of the upstream data；

If second feedback information indicates that the content of all first feedback informations is NACK and the re-transmissions of the UE currently time Number is less than maximum retransmission, and the base station determines to participate in the interior of the first feedback information of all base stations of the cooperative transmission of the UE Appearance is NACK, and the UE can carry out the re-transmission of the upstream data.

16. method as claimed in claim 15, it is characterised in that the base station is according to the content of each first feedback information, really Whether the fixed UE can carry out the re-transmission of the upstream data, specifically include：

If the content of each first feedback information is NACK and the number of retransmissions current UE is less than the maximum re-transmission time Number, then the base station determines that the UE can carry out the re-transmission of the upstream data；

If the content of at least one the first feedback information is ACK, the base station determines that the UE will not carry out the upstream data Re-transmission.

17. method as claimed in claim 10, it is characterised in that if the base station determines that the UE can carry out the upper line number According to re-transmission, methods described also includes：

The re-transmission timing relationship that the base station is arranged according to itself with the UE, receives the re-transmission data of the UE；

Or the base station receives the re-transmission data of the UE according to from the retransfer scheduling information configured as the UE；

Or the retransfer scheduling information that the base station is configured according to the serving BS of the UE, receive the re-transmission data of the UE.

18. method as claimed in claim 10, it is characterised in that methods described also includes：

If the base station is the serving BS of the UE and the base station determines that the UE can carry out the re-transmission of the upstream data, The serving BS dispatches the re-transmission that UE carries out the upstream data by descending control signaling DCI；

If the base station is the serving BS of the UE and the base station determines that the UE will not carry out the weight of the upstream data Pass, the serving BS dispatches the UE and carries out new transmitting uplink data.

19. method as claimed in claim 10, it is characterised in that methods described also includes：

Whether the base station feeds back the content for the second feedback information that the second feedback information or the UE feed back according to the UE, Determine itself whether to need other base stations of the cooperative transmission with participating in the UE in addition to itself to carry out the upstream data Information exchange.

20. method as claimed in claim 19, it is characterised in that the base station determines itself whether need progress described up The information exchange of data, is specifically included：

If the content that the base station is serving BS and the first feedback information of itself is NACK, the serving BS is it is determined that deposit When the content of the first feedback information of at least one cooperative base station is ACK, it is determined that needing to carry out the upstream data Information exchange；

If the content that the base station is cooperative base station and the first feedback information of itself is ACK, the cooperative base station is it is determined that institute When the content for stating the first feedback information of serving BS is NACK, determine that itself needs is carried out with the serving BS described up The information exchange of data.

21. method as claimed in claim 10, it is characterised in that if the base station is the serving BS of the UE, the side Method also includes：

The schedule information of the UE is sent to each cooperation base by the serving BS before the upstream data of the UE is detected Stand.

22. method as claimed in claim 10, it is characterised in that it is anti-that the base station sends first itself determined to the UE Feedforward information, is specifically included：

The base station sends itself determine first by PHICH, PDCCH or ePDCCH in itself control channel to the UE Feedback information.

23. method as claimed in claim 10, it is characterised in that methods described also includes：

The base station receives the UE by Physical Uplink Control Channel PUCCH or Physical Uplink Shared Channel PUSCH and fed back The second feedback information.

24. a kind of user equipment, it is characterised in that the user equipment includes：

Receiving module, for receiving the first feedback letter that the base station of cooperative transmission of each participation user equipment (UE) is determined respectively Breath, wherein, first feedback information is used to indicate whether the same upstream data that the UE is sent correctly transmits, described to participate in The base station of the cooperative transmission of the UE includes the serving BS and at least one cooperative base station of the UE；

First determining module, for the content according to each first feedback information, it is determined whether need to carry out the upstream data Retransmit；

Second determining module, for the content according to each first feedback information, it is determined whether need to feed back the second feedback information, and It is determined that need feedback the second feedback information after, feed back second feedback information so that any base station according to itself whether Having fed back the second feedback information can know that other base stations that cooperative transmission is participated in addition to itself send the first feedback information Situation；Or according to the content of each first feedback information, the content of the second feedback information is determined, and feed back second feedback letter Breath, so that any base station other base stations according to being known the content of second feedback information send first and fed back The situation of information.

25. user equipment as claimed in claim 24, it is characterised in that first determining module specifically for：

If the content for the first feedback information that all base stations are returned is NACK, and the number of retransmissions current UE is less than Maximum retransmission, it is determined that needing to carry out the re-transmission of the upstream data；Otherwise, it determines the upstream data need not be carried out Retransmit.

26. user equipment as claimed in claim 25, it is characterised in that first determining module is additionally operable to：

After it is determined that needing to carry out the re-transmission of the upstream data, according to the re-transmission timing relationship arranged with each base station, Carry out the re-transmission of the upstream data；Or

The retransfer scheduling information that the retransfer scheduling information or the serving BS configured according to each base station is configured, carries out institute State the re-transmission of upstream data.

27. user equipment as claimed in claim 24, it is characterised in that second determining module specifically for：

It is determined that each first feedback information is met after imposing a condition, it is determined that the second feedback information need not be fed back；Otherwise, it determines needing Feed back the second feedback information；

28. user equipment as claimed in claim 26, it is characterised in that second determining module is additionally operable to：

After it is determined that needing the second feedback information of feedback, and before second feedback information is fed back, according to what is received The content of each first feedback information, determines the content of second feedback information.

29. the user equipment as described in claim 24 or 28, it is characterised in that second determining module specifically for：

Each first feedback information received is subjected to binary system summation or XOR processing, and using obtained information as described The content of second feedback information；Or

It is ACK according to the content in all first feedback informations received with the presence or absence of at least one the first feedback information, really The content of fixed second feedback information；Or

According to the content of each first feedback information, whether all identical or part is identical or differs entirely, determines second feedback The content of information.

30. the user equipment as described in any one of claim 24~28, it is characterised in that first determining module is also used In：If the receiving module does not receive the first feedback information that any base station is sent, it is determined that first not received is anti- The content of feedforward information is NACK；

Second determining module is additionally operable to：If the receiving module does not receive the first feedback letter that any base station is sent Breath, it is determined that the content for the first feedback information not received is NACK.

31. a kind of base station of participation UE cooperative transmission, it is characterised in that the base station includes：

First processing module, for the schedule information according to the UE, detects the upstream data of the UE, and send to the UE Itself determine be used for indicate the first the feedback information whether upstream data correctly transmits；

Second processing module, for whether feeding back the second feedback information, or second fed back according to the UE according to the UE The content of feedback information, determines whether the UE can carry out the re-transmission of the upstream data；Whether wherein described UE feeds back second Feedback information is to be determined by the UE according to the content of each first feedback information；Second feedback information of UE feedback it is interior Hold what is determined by the UE according to the content of each first feedback information.

32. base station as claimed in claim 31, it is characterised in that the Second processing module is additionally operable to：

It is determined that the first feedback information of itself content be NACK when, according to the UE whether feed back the second feedback information or The content of second feedback information of the UE feedbacks, determines whether the UE can carry out the re-transmission of the upstream data.

33. base station as claimed in claim 32, it is characterised in that the Second processing module is additionally operable to：

When it is determined that the content of the first feedback information of itself is ACK, determine that the UE will not carry out the weight of the upstream data Pass；

When it is determined that the number of retransmissions current UE has reached maximum retransmission, determine that the UE will not be carried out described up The re-transmission of data.

34. the base station as described in claim 31 or 32, it is characterised in that Second processing module specifically for：

If the content for the first feedback information that the UE is returned in serving BS does not feed back the second feedback information when being ACK,：If Second feedback information is not detected, the content for determining the first feedback information that the serving BS is returned is ACK, and institute The re-transmission of the upstream data will not be carried out by stating UE；

If the UE at least one participate in the cooperative transmission of the UE base station return the first feedback information content for ACK not The second feedback information is fed back, then：If detecting second feedback information and the number of retransmissions current UE being less than maximum weight Number of times is passed, the content for determining the first feedback information of the base station of all participation UE cooperative transmission is NACK, and the UE The re-transmission of the upstream data can be carried out；If not detecting second feedback information, determine that at least one participates in the UE's The content of first feedback information of the base station of cooperative transmission is ACK, and the UE will not carry out the re-transmission of the upstream data；

If the UE is when the content of the first feedback information of the base station feedback of all participation UE cooperative transmission is NACK The second feedback information is not fed back, then：If detecting second feedback information, at least one cooperative transmission for participating in the UE is determined The content of the first feedback information of base station be ACK, and the UE will not carry out the re-transmission of the upstream data；If not detecting It is less than maximum retransmission to second feedback information and the number of retransmissions current UE, determines all participation UE association Content with the first feedback information of the base station of transmission is NACK, and the UE can carry out the re-transmission of the upstream data；

If the first feedback information that the UE is returned in the first feedback information that the serving BS is returned with all cooperative base stations The second feedback information is not fed back during all same, then：If detecting second feedback information, the first of the serving BS is determined Feedback information is different from the content of the first feedback information of at least one cooperative base station, and the UE will not carry out the upper line number According to re-transmission；

If the first feedback information and the first of at least one cooperative base station return that the UE is returned in the serving BS Feedback information difference does not feed back the second feedback information, determines that the first feedback information of the serving BS cooperates base with least one The content for the first feedback information stood is different, and the UE will not carry out the re-transmission of the upstream data；

If the UE is receiving the first feedback information from PDCCH or ePDCCH, and at least one participates in the UE cooperative transmissions Base station do not feed back the second feedback letter when the new transmitting uplink data of the UE is scheduled in corresponding PDCCH or ePDCCH Breath, determines that at least one participates in the base station of the cooperative transmission of the UE and scheduled the UE's in corresponding PDCCH or ePDCCH New transmitting uplink data, and the UE will not carry out the re-transmission of the upstream data.

35. base station as claimed in claim 31, it is characterised in that the Second processing module is additionally operable to：

After second feedback information is detected, according to the content of second feedback information, determine whether the UE can enter The re-transmission of the row upstream data.

36. the base station as described in claim 31 or 35, it is characterised in that the Second processing module specifically for：

If second feedback information indicates that the content of the first feedback information of each base station is all identical, anti-according to itself first The content of feedforward information, it is determined that participated in addition to itself the first feedback information of other base stations of the cooperative transmission of the UE with from The content of first feedback information of body is identical, and the content of the first feedback information according to each base station, determines that the UE whether can Carry out the re-transmission of the upstream data；

If second feedback information indicates that the content part of the first feedback information of each base station is identical, it is determined that participating in the association of the UE Content with the first feedback information of all base stations of transmission is incomplete same, and determines that the UE will not carry out the upper line number According to re-transmission；

If second feedback information carries out the letter after binary system summation or XOR processing for the first feedback information of each base station Breath, according to the content of second feedback information and the content of the first feedback information of itself, it is determined that the of other base stations The content of one feedback information, and according to the content of each first feedback information, determine whether the UE can carry out the upstream data Re-transmission；

If the content that second feedback information indicates to have at least one the first feedback information is ACK, it is determined that participating in the UE's The content of at least one the first feedback information is ACK, and the UE in first feedback information of all base stations of cooperative transmission The re-transmission of the upstream data will not be carried out；

If second feedback information indicates that the content of all first feedback informations is NACK and the re-transmissions of the UE currently time Number is less than maximum retransmission, it is determined that the content for participating in the first feedback information of all base stations of the cooperative transmission of the UE is NACK, and the UE can carry out the re-transmission of the upstream data.

37. base station as claimed in claim 31, it is characterised in that the Second processing module is additionally operable to：

If it is determined that the UE can carry out the re-transmission of the upstream data, according to the re-transmission timing relationship that itself arranges with the UE, Receive the re-transmission data of the UE；Or according to from the retransfer scheduling information configured as the UE, receive the re-transmission of the UE Data；Or the retransfer scheduling information configured according to the serving BS of the UE, receive the re-transmission data of the UE.

38. base station as claimed in claim 31, it is characterised in that if from the serving BS as the UE, and determine described UE can carry out the re-transmission of the upstream data, and the first processing module is additionally operable to：UE meetings are dispatched by descending control signaling DCI Carry out the re-transmission of the upstream data；

If from the serving BS as the UE, and determining that the UE will not carry out the re-transmission of the upstream data, described first Processing module is additionally operable to：Dispatch the UE and carry out new transmitting uplink data.

39. base station as claimed in claim 31, it is characterised in that the base station also includes：

3rd processing module, for whether feeding back the second feedback letter that the second feedback information or the UE feed back according to the UE Whether the content of breath, determine itself to need other base stations of the cooperative transmission with participating in the UE in addition to itself to carry out on described The information exchange of row data.

40. base station as claimed in claim 39, it is characterised in that the 3rd processing module specifically for：

If certainly as serving BS, and the content of the first feedback information of itself is NACK, it is determined that in the presence of at least one cooperation When the content of first feedback information of base station is ACK, it is determined that needing to carry out the information exchange of the upstream data；

If from as cooperative base station, and the content of the first feedback information of itself is ACK, it is determined that the serving BS first When the content of feedback information is NACK, the information exchange for itself needing to carry out the upstream data with the serving BS is determined.

41. base station as claimed in claim 31, it is characterised in that if from the serving BS as the UE, described first Reason module is additionally operable to：

Before the upstream data of the UE is detected, the schedule information of the UE is sent to each cooperative base station.

42. a kind of communication system, it is characterised in that the communication system includes：

User equipment (UE), for receiving the first feedback information that the base station for the cooperative transmission for each participating in the UE is determined respectively；Root According to the content of each first feedback information, it is determined whether need to carry out the re-transmission of upstream data；According in each first feedback information Hold, it is determined whether need to feed back the second feedback information, and after it is determined that needing the second feedback information of feedback, feed back second feedback Information, so that any base station can know that participation is cooperateed with addition to itself according to whether the UE has fed back the second feedback information Other base stations of transmission send the situation of the first feedback information；Or according to the content of each first feedback information, determine that second is anti- The content of feedforward information, and second feedback information is fed back, so that content of any base station according to second feedback information It can know that other described base stations send the situation of the first feedback information；

Base station, for the schedule information according to the UE, detects the upstream data of the UE, and send itself determination to the UE Be used for indicate the first the feedback information whether upstream data correctly transmits；Whether the second feedback letter is fed back according to the UE Breath, or according to the content of the UE the second feedback informations fed back, determine whether the UE can carry out the upstream data Retransmit；

Wherein, the base station of the cooperative transmission of the participation UE includes the serving BS and at least one cooperative base station of the UE.