CN105790897A

CN105790897A - Method and equipment for hybrid automatic repeat request (HARQ)

Info

Publication number: CN105790897A
Application number: CN201410836380.2A
Authority: CN
Inventors: 李迎阳; 孙程君
Original assignee: Beijing Samsung Telecommunications Technology Research Co Ltd; Samsung Electronics Co Ltd
Current assignee: Beijing Samsung Telecom R&D Center; Beijing Samsung Telecommunications Technology Research Co Ltd; Samsung Electronics Co Ltd
Priority date: 2014-12-26
Filing date: 2014-12-26
Publication date: 2016-07-20
Anticipated expiration: 2034-12-26
Also published as: CN105790897B; KR20160079647A

Abstract

The invention discloses a method for a hybrid automatic repeat request (HARQ). The method comprises the following steps that UE (User Equipment) receives configuration information of a base station about cross-carrier HARQ transmission; and the UE receives downlink control information sent by the base station and correspondingly receives downlink data or sends uplink data. The method disclosed in the invention supports HARQ transmission of the same data on a plurality of CCs (Component Carrier), so that the effectiveness for HARQ transmission is improved and the performance of data transmission is improved.

Description

A kind of method and apparatus of hybrid automatic repeat-request (HARQ)

Technical field

The present invention relates to wireless communication system, more specifically to the method and apparatus processing hybrid automatic repeat-request (HARQ) in a kind of Long Term Evolution (LTE) system.

Background technology

Long Term Evolution (LTE) system of 3GPP standardization body supports FDD (FDD) and two kinds of duplex modes of time division duplex (TDD).As it is shown in figure 1, the FDD wireless frame structure schematic diagram that Fig. 1 is prior art, to FDD system, the length of each radio frames is 10ms, and comprising 10 length is the subframe of 1ms.Wherein, subframe is made up of the time slot that two continuous print length is 0.5ms, and namely kth subframe comprises time slot 2k and time slot 2k+1, k=0,1 ... 9.As in figure 2 it is shown, the TDD wireless frame structure schematic diagram that Fig. 2 is prior art, to TDD system, it is the field of 5ms that the radio frames of each 10ms is divided into two length.Wherein, each field comprises the subframe and 3 special domain that 8 length is 0.5ms, i.e. descending pilot frequency time slot (DwPTS), protection interval (GP) and uplink pilot time slot (UpPTS), the length of these 3 special domain be 1ms.Each subframe is made up of two continuous print time slots, and namely kth subframe comprises time slot 2k and time slot 2k+1, k=0,1 ... 9.One downlink times interval (TTI) defines in a subframe.

When TDD radio frames is configured, support 7 kinds of upstream and downstream configurations, as shown in table 1.Here, D represents descending sub frame, and U represents sub-frame of uplink, and S represents the above-mentioned special subframe comprising 3 special domain.

Table 1

Front n OFDM (OFDM) symbol of each descending sub frame may be used for transmission Downlink Control Information, Downlink Control Information includes Physical Downlink Control Channel (PDCCH, PhysicalDownlinkContolChannel) and other control information, wherein, n is equal to 0,1,2,3 or 4；Remaining OFDM symbol can be used to transmitting physical DSCH Downlink Shared Channel (PDSCH, PhysicalDownlinkSharedChannel) or strengthens PDCCH (EPDCCH).In LTE system, Downlink Control Information (the DCI of PDCCH and EPDCCH carrying distribution uplink channel resources or down channel resources, DownlinkControlInformation), downstream grants signaling (DLGrant) and uplink authorization signaling (ULGrant) it are called.In LTE system, the DCI of different user devices (UE) independently sends, and DLGrant and ULGrant therein independently sends.

In the enhancing system of LTE system, it is obtain bigger bandwidth of operation by combining multiple unit carrier wave (CC), namely carrier aggregation (CA) is adopted to constitute downlink and the up-link of communication system, thus supporting higher transfer rate.Here, the CC condensed together both can adopt identical duplex mode, i.e. Quan Shi FDD community or be TDD cell entirely, it would however also be possible to employ different duplex modes, namely there is FDD community and TDD cell simultaneously.To a UE, base station can configure it and work in multiple Cell, and one of them is main Cell (Pcell), and other Cell are called time Cell (Scell).In above-mentioned CA system, to same transmission block (TB), its initial transmission and re-transmission are to be limited on same unit carrier wave to be transmitted.To LTECA system, hybrid automatic repeat-request response (HARQ-ACK) and channel condition information (CSI) that physically based deformation ascending control channel (PUCCH, PhysicalUplinkContolChannel) transmits only carry out on Pcell.

Above LTE system is generally deployed in licensed band, it is possible to avoid the interference of other system.Also have except licensed band and exempt from licensed band.Exempt from licensed band general the allocated for certain other purposes, for instance, WLAN (WiFi) system of radar system and/or 802.11 series.802.11 the WiFi system of series is based on the mechanism works of carrier sense multiple access/conflict avoidance (CSMA/CA), one mobile platform (STA) have to detect wireless channel before sending signal, only just can take this wireless channel after wireless channel is idle and keeps regular hour section and send signal.STA can combine employing two set mechanism and jointly judge radio channel state.On the one hand, STA can adopt the detection wireless channel that carrier sense technology (CarrierSensing) is actual, when the signal other STA being detected or the signal power that detects exceed setting thresholding, confirms that wireless channel does.At this moment, the physical layer block in this STA is hurried to null tone road monitoring (CCA, ClearChannelAssessment) the report instruction wireless channel that its high-rise module is reported.On the other hand, 802.11 the WiFi system of series also introduces virtual carrier sensing in wireless network communication technology, i.e. system allocation vector (NAV), each 802.11 frames contain persistent period (duration) territory, can not sending signal over the wireless channel according to the NAV value confirmation that duration field is arranged, NAV is the time that instruction needs reserved wireless channel.

For LTE system, in order to meet the demand that service of mobile communication increases, it is necessary to excavate more frequency spectrum resource.It is a possible solution exempting from deployment LTE system in licensed band.In existing LTECA system, initial transmission and HARQ to same TB retransmit and are all limited on same CC.But, to exempt from licensed band, in order to avoid the interference with other equipment, be similar to the competition mechanism of WiFi, LTE equipment needs first to detect the state of channel before sending signal, and when only meeting channel occupancy condition, equipment can busy channel；Further, the Channel holding time of equipment can be one or more subframe, then must discharge channel, thus leaving the chance of other hold facility channels for.So, one LTE equipment is after robbing and account for channel and send data, have to discharge channel resource, when the number of devices participating in competition on carrier wave is more, this LTE equipment is likely to need the long time can again seize channel, then could once not have successful data to carry out HARQ re-transmission to front.Which greatly limits the effectiveness of HARQ transmission.

Summary of the invention

The method and apparatus that this application provides a kind of HARQ transmission, it is possible to realize the HARQ transmission across carrier wave, enables wrong data Fast retransmission, improves the performance of data transmission.

For achieving the above object, the application adopts the following technical scheme that:

A kind of method of hybrid automatic repeat-request HARQ transmission, including:

The UE adopting carrier aggregation CA receives base station about the configuration information across carrier wave HARQ transmission；

Described UE receives the Downlink Control Information that base station sends, and according to described configuration information correspondingly downlink data receiving or transmission upstream data on the data channel of its scheduling；Wherein, the same initial transmission of scheduling data and the data channel of re-transmission allow to be positioned at different CC.

It is preferred that described UE receives CC indicates information, for identifying the CC of current scheduling data；Wherein, CC indicates the data that information is identical to allow transmission on the data channel of different CC；

The transmission of described upstream data or downlink data includes: described CC indicates the data of the same HARQ procedure ID that information is identical and re-transmission thereof carry out HARQ merging；Wherein, a HARQ procedure indicates information and HARQ procedure ID to carry out associating mark by CC.

It is preferred that described CC indicates information to be CC index in all CC being allocated to described UE；

Or, when all CC being allocated to described UE are divided into multiple groups and are limited only in each group to carry out respectively across carrier wave HARQ transmission, described CC indicates information to be CC index in its place group.

It is preferred that as the TM adopting the transmission mode TM of one transmission block TB of configuration and the data channel place CC of described scheduling to adopt two TB of configuration of the CC indicated by described CC instruction information, the mode at the data channel transmitting data of described scheduling includes:

The data channel limiting described scheduling can only dispatch the data of a TB；Wherein, to normal DCI, it is determined that the mode of the TB of permission scheduling is: using the TB as permission scheduling that fixes in two TB, or, the TB allowing to dispatch is determined according to the control information of in DCI two TB；

Or, on the data channel of described scheduling, one of them TB of transmission is the data of CC indicated by described CC instruction information, the data of the data channel place CC that another TB is described scheduling of transmission；Wherein, one of them TB described is preassigned fixing TB, or, by the TB that the information in high-level signaling or DCI indicates.

It is preferred that when described CC indicates the CC of information instruction to adopt the CC at the TM of two TB of configuration and the data channel place of the described scheduling TM adopting one TB of configuration, the mode at the data channel transmitting data of described scheduling includes:

On the data channel of described scheduling, the data of transmission are the described CC TB indicating that a fixing TB on the CC of information instruction or customizing messages are specified；

Or, indicate according to the information in high-level signaling or DCI, it is determined that on described current scheduling data channel, the data of transmission are a TB of the instruction of information described in the CC indicated by described CC instruction information；

Or, on the data channel of described scheduling, the data of transmission are, a TB in CC indicated by the described CC instruction information shown in the NDI territory indication of described DCI format；

Or, it is respectively compared the NDI in the front NDI once transmitted and current DCI of two TB of CC indicated by described CC instruction information, if the NDI of only one of which TB is constant, it is determined that the data of transmission are TB constant for this NDI on the data channel of described scheduling；Otherwise, determine that the data of transmission are a fixing TB of CC indicated by described CC instruction information on the data channel of described scheduling, or indicate according to the information in high-level signaling or DCI, it is determined that on the data channel of described scheduling, the data of transmission are a TB of the instruction of information described in CC indicated by described CC instruction information.

It is preferred that described CC indicates the initial transmission of the data that CC is its mark of information instruction or shared by physical channel CC of re-transmission, or, described CC indicates the CC of information instruction to be any one that be allocated in the CC of described UE.

If it is preferred that the data of current scheduling are new data, then the CC indicated by CC instruction information in described Downlink Control Information is consistent with the index of the data channel place CC of described scheduling；

Described CC indicates the CC shared by physical channel of the data initial transmission that CC is its mark of information instruction.

It is preferred that described CC indicates information to be carried by the new definition in DCI format in Downlink Control Information or existing information territory；Or, described CC indicates information to be carried by a DCI format in public search space, and this CC indicates information that continuous multiple subframes are effective.

It is preferred that when the data channel place CC of CC and described scheduling indicated by described CC instruction information all adopts the TM of two TB of configuration,

It is respectively compared the NDI in the front NDI once transmitted and current DCI of two TB of CC indicated by described CC instruction information, if the NDI value only one of which of two TB changes, another is constant, then including in the mode of the data channel transmitting data of described scheduling: corresponding TB constant for NDI, on the data channel of described scheduling, the data of transmission are the data re-transmissions of CC indicated by described CC instruction information；Another TB corresponding, on the data channel of described scheduling, the data of transmission are the new datas of CC indicated by described CC instruction information；

Or, corresponding TB constant for NDI, on the data channel of described scheduling, the data of transmission are the data re-transmissions of CC indicated by described CC instruction information；Another TB corresponding, according to the HARQ procedure ID in DCI format, compare the NDI value of the previous data transmission of the corresponding TB of the data channel place CC of described scheduling and the NDI value of current DCI, it is determined that transmission data are the new data of the data channel place corresponding TB of CC of corresponding described scheduling or retransmit data.

It is preferred that as the TM adopting the transmission mode TM and current scheduling data channel place CC of one transmission block TB of configuration to adopt two TB of configuration of the CC indicated by described CC instruction information, the mode at described current scheduling data channel transmitting data includes:

It is respectively compared the NDI in the front NDI once transmitted and current DCI of the TB of CC indicated by described CC instruction information, when the NDI of only one of which TB is constant, it is determined that the data of transmission are TB constant for this NDI on described current scheduling data channel.

It is preferred that described UE receives virtual carrier VCC information, it is used for the VCC indicating current data corresponding；Wherein, the data of identical VCC allow transmission on the PDSCH of different CC；

The transmission of described upstream data or downlink data includes: the data of same HARQ procedure ID identical for VCC and re-transmission thereof are carried out HARQ merging；Wherein, a HARQ procedure combines mark by VCC index and HARQ procedure ID.

It is preferred that described VCC information is carried by the self-defined or existing information territory in DCI format in Downlink Control Information；Or, described VCC information is carried by a DCI format in public search space, and this CC indicates information that continuous multiple subframes are effective.

It is preferred that be that the index information of each VCC of described UE distribution is all different；

Or, when all N number of CC being allocated to UE is divided into multiple groups, and when carrier wave HARQ transmission is limited only in each group to carry out respectively, then, in same group, the index information of each VCC is all different.

It is preferred that the mode that each VCC for being allocated to described UE configures transmission mode includes:

High-level signaling is adopted to be respectively configured the TB number allowing simultaneously to transmit in a subframe of each VCC；

Or, it is the unified TB number being arranged in a subframe to allow carrying of all VCC with high-level signaling；

Or, each VCC predefined allows the TB number simultaneously transmitted in a subframe；

Or, when configuring each CC of described UE, whether indicate the configuration information of corresponding CC for mapping out the configuration information of a VCC, to the CC that have mapped VCC, obtain the TM of the VCC of its correspondence according to the TM of this CC；

Or, for being allocated to one group of CC of described UE, be configured with, when there is a CC, the TM supporting 2 TB, then each VCC allows the TB number simultaneously carried to be 2 in a subframe, otherwise, each VCC allows the TB number simultaneously carried to be 1 in a subframe of a CC；

Or, configure a numerical value X, for being allocated to each VCC of described UE, before configuration, X VCC allows the TB number simultaneously carried to be 2 in a subframe；Configure other M-X VCC and in a subframe, allow the TB number simultaneously carried to be 1, M be the sum of all VCC being allocated to described UE.

It is preferred that the mode at the data channel transmitting data of scheduling includes:

The data of the VCC of the TM of the single TB of corresponding configuration only map into transmission on the CC of the TM supporting single TB, and the data of the VCC of the TM of the double; two TB of corresponding configuration only map into transmission on the CC of the TM supporting double; two TB；

Or, the data of the VCC of the TM of the single TB of corresponding configuration only map into transmission on the CC of the TM supporting single TB, and the data of the VCC of the TM of the double; two TB of corresponding configuration allow to be mapped to and transmit on any one CC；

Or, the data of the VCC of the TM of the single TB of corresponding configuration, the data of the VCC of the TM of the double; two TB of corresponding configuration only can only be mapped to support transmission on the CC of the TM of double; two TB；

Or, the data of any one VCC corresponding all allow to be mapped to and transmit on any one CC.

Preferably, as the described VCC TM adopting the TM of one TB of configuration and the data channel place CC of described scheduling to adopt two TB of configuration, the data channel limiting described scheduling can only dispatch the data of a TB, and the TB of described VCC is mapped to the TB of this permission scheduling；Wherein, to normal DCI, it is determined that in the data channel of described scheduling, the mode of permission scheduling TB is:

One fixing TB of the data channel place CC of described scheduling allows scheduling；

Or, the TB allowing scheduling is judged according to the control information of two TB；

Or, the TB allowing scheduling is indicated by the information in high-level signaling or DCI format.

It is preferred that as the described VCC TM adopting the TM of two TB of configuration and the data channel place CC of described scheduling to adopt one TB of configuration, the mode at the data channel transmitting data of described scheduling includes:

On the data channel of described scheduling, the data of transmission are the TB that in described VCC, a fixing TB or customizing messages are specified；

Or, indicate according to the information in high-level signaling or DCI, it is determined that on the data channel of described scheduling, the data of transmission are a TB indicated by described VCC；

Or, it is respectively compared NDI in the front NDI once transmitted and current DCI of two TB of described VCC, if the NDI of only one of which TB is constant, it is determined that the data of transmission are TB constant for this NDI on the data channel of described scheduling；Otherwise, determine data are described VCC fixing TB of transmission on the data channel of described scheduling, or indicate according to the information in high-level signaling or DCI, it is determined that on the data channel of described scheduling, the data of transmission are a TB indicated by described VCC.

It is preferred that described UE receives associating HARQ procedure ID, it is used for the associating HARQ procedure indicating current data corresponding；Wherein, the data of same associating HARQ procedure allow transmission on the PDSCH of different CC；

The transmission of described upstream data or downlink data includes: the data of same associating HARQ procedure ID and re-transmission thereof are carried out HARQ merging.

It is preferred that the associating HARQ procedure ID of each associating HARQ procedure is all different；

Or, when N number of CC of configuration UE is divided into multiple groups, and when carrier wave HARQ transmission is limited only in each group to carry out respectively, in same group, the associating HARQ procedure ID of each associating HARQ procedure is all different.

Include it is preferred that configure the mode of TM on a CC for each associating HARQ procedure of described UE:

It is respectively configured the TB number that each associating HARQ procedure allows to carry in a subframe of a CC simultaneously with high-level signaling；

Or, being that all associating HARQ procedure are unified with high-level signaling is arranged in the TB number allowing simultaneously to carry in a subframe of a CC；

Or, predefined all associating HARQ procedure allow the TB number simultaneously carried in a subframe of a CC；

Or, to the one group of CC being allocated to described UE, it is configured with the TM supporting 2 TB when there is a CC, then each associating HARQ procedure allows the TB number simultaneously carried to be 2 in a subframe of a CC, and otherwise each associating HARQ procedure allows the TB number simultaneously carried to be 1 in a subframe of a CC；

Or, configure a numerical value X, all associating HARQ procedure to described UE, before configuration wherein, X associating HARQ procedure allows the TB number simultaneously carried to be 2 in a subframe of a CC, and other Mg-X associating HARQ procedure allows the TB number simultaneously carried to be 1 in a subframe of a CC；Wherein, Mg is the sum of the associating HARQ procedure being allocated to described UE；

Or, the transmission mode of the physics CC shared by the last initial transmission at an associating HARQ procedure ID determines current corresponding for this HARQ procedure ID TB number allowing simultaneously to carry in a subframe of a CC.

It is preferred that the mode at the data channel transmitting data of described scheduling includes:

The data of the associating HARQ procedure ID of the single TB of corresponding configuration only map into transmission on the CC of the TM supporting single TB, and the data of the associating HARQ procedure ID of the double; two TB of corresponding configuration only map into transmission on the CC of the TM supporting double; two TB；

Or, the data of the associating HARQ procedure ID of the single TB of corresponding configuration only map into transmission on the CC of the TM supporting single TB, and the data of the associating HARQ procedure ID of the double; two TB of corresponding configuration allow to be mapped to and transmit on any one CC；

Or, the data of the associating HARQ procedure ID of the single TB of corresponding configuration allow to be mapped to be transmitted on any one CC, and the data of the associating HARQ procedure ID of the double; two TB of corresponding configuration only map into transmission on the CC of the TM supporting double; two TB；

Or, the data of corresponding any one associating HARQ procedure ID all allow to be mapped to be transmitted on any one CC.

Preferably, as the TM that described associating HARQ procedure adopts the TM of one TB of configuration and the data channel place CC of described scheduling to adopt two TB of configuration, the data channel limiting described scheduling can only dispatch the data of a TB, and the TB of described associating HARQ procedure is mapped to the TB of this permission scheduling；Wherein, to normal DCI, it is determined that in the data channel of described scheduling, the mode of permission scheduling TB is:

It is preferred that when combining HARQ procedure and adopting the TM that the TM of two TB of configuration and the data channel place CC of described scheduling are configured with a TB, the mode at the data channel transmitting data of described scheduling includes:

The fixing TB that data are described associating HARQ procedure or the TB that customizing messages is specified of transmission on the data channel of described scheduling；

Or, indicate according to the information in high-level signaling or DCI, it is determined that on the data channel of described scheduling, the data of transmission are a TB indicated by described associating HARQ procedure；

Or, it is respectively compared NDI in the front NDI once transmitted and current DCI of two TB of associating HARQ procedure, if the NDI of only one of which TB is constant, it is determined that the data of transmission are TB constant for this NDI on the data channel of described scheduling；Otherwise, determine the fixing TB that data are described associating HARQ procedure of transmission on the data channel of described scheduling, or indicate according to the information in high-level signaling or DCI, it is determined that on the data channel of described scheduling, the data of transmission are a TB indicated by described associating HARQ procedure.

A kind of equipment of hybrid automatic repeat-request HARQ transmission, including: configuration receives unit, scheduling unit and data transmission/reception unit；

Described configuration receives unit, for receiving base station about the configuration information across HARQ transmission；

Described scheduling unit, for receiving the Downlink Control Information that base station sends, and determines the data channel that this Downlink Control Information is dispatched；

Described data transmission/reception unit, for the data channel determined at described scheduling unit, according to described configuration information downlink data receiving or transmission upstream data.

As seen from the above technical solution, in the application, the UE supporting CA receives base station about across the configuration information of carrier wave HARQ transmission and Downlink Control Information, and carries out downlink data reception according to configuration information on the data channel of Downlink Control Information scheduling or upstream data sends.Wherein, the same initial transmission of scheduling data and the PDSCH of re-transmission may be located at different CC, support the HARQ transmission completed on multiple CC same data, thus improving the effectiveness of HARQ transmission, improve the performance of data transmission.

Accompanying drawing explanation

Fig. 1 is LTEFDD frame structure；

Fig. 2 is LTETDD frame structure；

Fig. 3 is the overview flow chart of HARQ transmission method in the application；

Fig. 4 is the overall construction drawing of HARQ transmission equipment in the application.

Detailed description of the invention

In order to make the purpose of the application, technological means and advantage clearly understand, below in conjunction with accompanying drawing, the application is described in further details.

Exempt from licensed band, it is possible to deployed other wireless communication systems, for instance, radar or WiFi etc..Further, exempting from licensed band, it is also possible to when deploying multiple LTE system simultaneously, for instance, the plurality of LTE system can be under the jurisdiction of different operators respectively.In order to simplicity describes, refer to base station and UE below with LTE equipment.In order to avoid the interference with the equipment of other LTE equipment or other wireless systems, LTE equipment needs first to detect the state of channel before sending signal, and when only meeting channel occupancy condition, equipment can busy channel；Further, the Channel holding time of equipment can be one or more subframe, then must discharge channel, thus leaving the chance of other hold facility channels for.

In existing LTECA system, initial transmission and HARQ to same TB retransmit and are all limited on same CC.But, to exempt from licensed band, the method for above-mentioned competitive resource greatly limit the effectiveness of HARQ transmission.Specifically, one LTE equipment is after robbing and account for channel and send data, have to discharge channel resource, when the number of devices participating in competition on carrier wave is more, this LTE equipment is likely to need the long time can again seize channel, then could once not have successful data to carry out HARQ re-transmission to front.In order to make full use of HARQ transmission to improve the performance of data transmission, one be there is no the transmission block (TB) of Successful transmissions, it is necessary to support on another carrier wave, carry out Fast retransmission.That is, it needs to support the HARQ transmission across carrier wave.

To the HARQ transmission across carrier wave, same data can be transmitted on different CC, and the TB number of the transmission mode (TM) of such different CC can be different.First, the channel status residing for CC, each CC has its TM being suitable for.So, when needs are when a CC transmitting data, no matter it is new data or re-transmission data, all should carry out according to this CC transmission mode configured.According to existing LTE standard, each TM supports two kinds of DCI format simultaneously, and to descending scheduling, normal DCI format can be DCI1/1B/1D/2/2A/2B/2C/2D etc., and returning (fallback) DCI format is DCI1A；To uplink scheduling, normal DCI format can be DCI4, and returns DCI format and refer to DCI0.Normal DCI format can support that the data of 1 TB or 2 TB are transmitted, and return DCI format and only support that the data of 1 TB are transmitted.The present invention proposes corresponding mechanism, ensures that aliasing free is across carrier wave HARQ transmission and re-transmission, thus ensureing the performance that data are transmitted

Fig. 3 processes the flow chart across carrier wave HARQ transmission method in LTE communication system of the present invention, specifically include that

Step 301, UE receive base station about the configuration information across carrier wave HARQ transmission.

Described configuration information configuration UE processes data transmission based on across carrier wave HARQ.

Step 302, UE receive the Downlink Control Information that base station sends, and correspondingly send upstream data or downlink data receiving on the data channel of its scheduling according to configuration information.

Here, the instruction after UE receives Downlink Control Information, according to it, it may be necessary to merging from twice of different CC or the Soft Inform ation that repeatedly transmits same data, then to decoding data.It is to say, the not homogeneous transmission of same data may be located on the data channel of different CC.

Below by four preferred embodiments, technical scheme is further elaborated.

Embodiment one

When performing across carrier wave HARQ transmission, to data, the physical channel place CC of its initial transmission and re-transmission can be different, but initial transmission and re-transmission to these data use same CC to indicate information to identify.This CC indicates the CC of information instruction can be can only be identical with some CC shared by the physical channel of the initial transmission of these data or re-transmission；Or, it is also possible to it is any one in the CC of configuration UE.Here, a HARQ procedure CC indicates information and HARQ procedure ID to combine mark.Being transmitted as example with downlink data, UE is when downlink data receiving, it is possible to the first biography of the data of same HARQ procedure ID identical for CC instruction information and re-transmission thereof are carried out HARQ merging.

Above-mentioned CC indicates information can be transmission in the Downlink Control Information (DCI) of schedule data transmission, such as, an information field can be increased in DCI format, or reuse existing information field in DCI, send this newly-increased CC corresponding to the data of current scheduling and indicate information.Or, above-mentioned CC indicates information can also be applied in continuous multiple subframes of a carrier wave, such as, to the community exempting from licensed band, when sending the channel occupancy instruction information of this community, the CC simultaneously indicating the data transmission in all subframes of this time channel occupancy corresponding indicates information.Such as, adopt a DCI format in public search space (CSS) to send channel occupancy instruction information and the above-mentioned CC being applied to continuous multiple subframe indicates information, the bit number of this DCI format is equal with DCI format 1A or 1C, thus not increasing the blind Detecting number of times of DCI format.

Assume UE is configured N number of CC, and to the data of a CC when carrier wave HARQ transmission can carry out on arbitrary CC, the CC in DCI format indicates information can be the index of a CC.Or, when N number of CC of configuration UE is divided into multiple groups, and when carrier wave HARQ transmission is limited only in each group to carry out respectively, the CC in DCI format indicates information can be CC index in this group.Being transmitted as example with downlink data, to the self scheduling (selfscheduling) on a CC, the downlink data of its scheduling just takies the PDSCH of this CC and transmits, and namely CC indicates the data PDSCH transmission at this CC of the CC of information instruction.To across carrier dispatching, the downlink data of its scheduling is to transmit at the PDSCH of the CC indicated by CIF territory, and namely the PDSCH of the CC that the data of the CC of CC instruction information instruction indicate in CIF territory transmits.

To a data transfer, indicate the CCA of information instruction and the CCB at the scheduling data channel place method being respectively described the present invention below according to CC.CCA can be identical with CCB, or different.

Assume that CCA and CCB is configured with the TM of a TB, according to the HARQ procedure ID in DCI format, compare the NDI value of the previous data transmission of CCA and the NDI value of current DCI, it is judged that the data of current scheduling are new data or re-transmission.If the value change of NDI, it is believed that this is the new data of this HARQ procedure ID of corresponding CCA.If the value of NDI is constant, it is believed that this is that the data of this HARQ procedure ID of corresponding CCA retransmit.

Assume that CCA and CCB is configured with the TM of two TB, according to the HARQ procedure ID in DCI format, to two TB, be respectively compared the NDI value of the previous data transmission of CCA and the NDI value of current DCI, it is judged that the data of current scheduling are new data or re-transmission.If the value of the NDI of two TB all changes, it is believed that the two TB is the new data of this HARQ procedure ID of corresponding CCA.If the value of the NDI of two TB is all constant, it is believed that the two TB is the re-transmission of this HARQ procedure ID of corresponding CCA.If the NDI of only one of which TB is constant, it is believed that the data that TB constant for corresponding NDI is this HARQ procedure ID of corresponding CCA retransmit, and to another TB it is the new data of this HARQ procedure ID of corresponding CCA.

Assume that CCA is configured with the TM of a TB, and CCB is configured with the TM of two TB, and corresponding processing method is described below.

The data channel that first method is restriction CCB can only dispatch the data of a TB.To normal DCI, it is possible to only dispatch one of them TB, and the TB of CCA is mapped to this TB；And another TB is disabling (Disabled).Can be fix to think that TB1 is available；Or, it is possible to it is fix to think that TB2 is available；Or, it is also possible to it is according to the control information of two TB in normal DCI, for instance, the information combination of MCS and RV judges which TB is available, and namely restriction can only have the combination of MCS and the RV of a TB to indicate this TB to be available；Or, indicate which TB to be available by other information in high-level signaling or DCI, correspondingly, UE determines the TB allowing scheduling in CCB according to instruction information.It addition, to returning DCI, only support that the TB of scheduling one TB, CCA is mapped to this TB.According to the HARQ procedure ID in DCI format, compare the NDI value of the previous data transmission of CCA and the NDI value of current DCI, it is judged that the data of current scheduling are new data or re-transmission.If the value change of NDI, it is believed that this is the new data of this HARQ procedure ID of corresponding CCA.If the value of NDI is constant, it is believed that this is that the data of this HARQ procedure ID of corresponding CCA retransmit.

Second method is the data channel to CCB, transmits the data of CCA wherein, and another TB transmits for the data of CCB on a TB.To normal DCI, it is possible to fix and think that the TB of CCA is the TB1 being mapped to the CCB data channel dispatched；Or, it is also possible to it is fix to think that the TB of CCA is the TB2 being mapped to the CCB data channel dispatched；Or, indicate the TB of CCA to be mapped to CCB on which TB of the data channel of scheduling by other information in high-level signaling or DCI, correspondingly, UE determines the TB allowing to dispatch in CCB according to instruction information.It addition, to returning DCI, only support that the TB of scheduling one TB, CCA is mapped to this TB.The TB of these mapping CCA data corresponding, according to the HARQ procedure ID in DCI format, compares the NDI value of the previous data transmission of CCA and the NDI value of current DCI, it is judged that the data of current scheduling are new data or re-transmission.If the value change of NDI, it is believed that this is the new data of this HARQ procedure ID of corresponding CCA.If the value of NDI is constant, it is believed that this is that the data of this HARQ procedure ID of corresponding CCA retransmit.TB to the data not mapping CCA, according to the HARQ procedure ID in DCI format, compares the NDI value of the previous data transmission of this TB of CCB and the NDI value of current DCI, it is judged that it is new data or the re-transmission of this TB of corresponding CCB.Here, the TB2 TB of CCA being mapped to the data channel of CCB has a benefit, because on CCB, it is TB1 with returning the DCI TB dispatched, adopt such method, it is possible to support to transmit at TB2 the TB of CCA in a subframe of CCB, and on TB1, retransmit the TB1 of CCB simultaneously.

Assume that CCA is configured with the TM of two TB, and CCB is configured with the TM of a TB, and corresponding processing method is described below.Because the transmittability of CCB only one of which TB, it is possible to fix and think that only the TB1 of CCA could transmit on CCB.Or, fix and think that only the TB2 of CCA could transmit on CCB.Or, the TB index of current transmission CCA is to obtain according to some other information, for instance, remember that the index of a kind of information is k, then the TB index of the CCA of current transmission can be mod (k, 2)+1.Above-mentioned for indicate the TB of the CCA of the current transmission information indexed can be PDCCH/EPDCCH channel index in the search volume of UE, subframe index, CC index and distribution data channel the information such as initial PRB index in one or more.Or, indicated which TB of CCA to transmit at CCB by other information in high-level signaling or DCI, correspondingly, UE is according to instruction information determines which TB that data are CCA of transmission (i.e. the TB of instruction information instruction).Or, the NDI territory in DCI format directly indicates the TB of current re-transmission, for instance, NDI is the re-transmission indicating the TB1 to CCA equal to 0, and NDI is the re-transmission indicating the TB2 to CCA equal to 1.Or, it is respectively compared NDI in the front NDI once transmitted and current DCI of two TB of CCA, if the NDI of only one of which TB is constant, then constant for this NDI TB transmits on CCB；Further, if the NDI of two TB is constant or all changes, can be that the TB1 only having CCA could transmit on CCB, or, only the TB2 of CCA could transmit on CCB, or, indicated which TB of CCA to transmit at CCB by other information in high-level signaling or DCI, correspondingly, UE determines which TB that data are CCA (i.e. the TB of instruction information instruction) of transmission according to instruction information.The TB of these mapping CCA data corresponding, according to the HARQ procedure ID in DCI format, compares the NDI value of the previous data transmission of CCA and the NDI value of current DCI, it is judged that the data of current scheduling are new data or re-transmission.If the value change of NDI, it is believed that this is the new data of this HARQ procedure ID of corresponding CCA.If the value of NDI is constant, it is believed that this is that the data of this HARQ procedure ID of corresponding CCA retransmit.Here, it is allowed to the benefit of the TB being mapped to CCB transmission of change CCA is that one of them TB avoiding CCA can not be retransmitted for a long time.Such as, assume that the TB1 of only CCA just can be mapped to CCB transmission, when the TB2 once transmitted before CCA is incorrect, the TB2 of CCA can not retransmit on CCB, simultaneously for a long time can not busy channel on the CC of TM supporting 2 TB, this causes that the TB2 of CCA can not retransmit for a long time, it reduces the performance of HARQ operation.

Embodiment two

Performing when the HARQ transmission of carrier wave, to data, the physical channel place CC of its initial transmission and re-transmission can be different, but initial transmission and re-transmission to these data use same CC to indicate information to identify.Especially, this CC indicates the CC shared by physical channel that the CC of information instruction can be the initial transmission of these data.Here, a HARQ procedure CC indicates information and HARQ procedure ID to combine mark.Being transmitted as example with downlink data, UE is when downlink data receiving, it is possible to the first biography of the data of same HARQ procedure ID identical for CC instruction information and re-transmission thereof are carried out HARQ merging.

With embodiment one the difference is that, the situation to scheduling new data, the present embodiment restriction indicates the information must be consistent with the index of CC at the data channel place of scheduling for the CC identifying data.To a data transfer, indicate the CCA of information instruction and the CCB at the scheduling data channel place method being respectively described the present invention below according to CC.CCA can be identical with CCB, or different.

Assume that CCA and CCB is configured with the TM of a TB, according to the HARQ procedure ID in DCI format, compare the NDI value of the previous data transmission of CCA and the NDI value of current DCI, it is judged that the data of current scheduling are new data or re-transmission.If the value change of NDI, it is believed that this is the new data of this HARQ procedure ID of corresponding CCA.At this moment, further requirement CCA and CCB is identical, otherwise may be considered situation about makeing mistakes.If the value of NDI is constant, it is believed that this is that the data of this HARQ procedure ID of corresponding CCA retransmit.

Assume that CCA and CCB is configured with the TM of two TB, according to the HARQ procedure ID in DCI format, to two TB, be respectively compared the NDI value of the previous data transmission of CCA and the NDI value of current DCI, it is judged that the data of current scheduling are new data or re-transmission.If the value of the NDI of two TB all changes, it is believed that the two TB is the new data of this HARQ procedure ID of corresponding CCA.At this moment, further requirement CCA and CCB is identical, otherwise may be considered situation about makeing mistakes.If the value of the NDI of two TB is all constant, it is believed that the two TB is the re-transmission of this HARQ procedure ID of corresponding CCA.If the NDI of only one of which TB is constant, it is possible to there are two kinds of processing methods.The first is to think that the data of corresponding TB constant for NDI this HARQ procedure ID being corresponding CCA retransmit；And to another TB it is the new data of corresponding CCA, at this moment, although the initial transmission of the new data of this CCA carries out on CCB, but still use the CC of corresponding CCA to indicate information to identify this new data.Second method is, it is believed that the data that corresponding TB constant for NDI is this HARQ procedure ID of corresponding CCA retransmit；And to another TB, it it is the data transmission of this HARQ procedure ID of corresponding CCB, namely, according to the HARQ procedure ID in DCI format, compare the NDI value of the previous data transmission of this TB of CCB and the NDI value of current DCI, it is judged that it is new data or the re-transmission of this TB of corresponding CCB, here, if the NDI value at another TB can not mate the HARQ transmission demand of this TB of CCB, it is possible to disables this TB.

Assume that CCA is configured with the TM of a TB, and CCB is configured with the TM of two TB, because CCA is same as CCB, CCB scarcely and can not send the new data of CCA.Corresponding processing method is described below.

The data channel that first method is restriction CCB can only dispatch the data of a TB.To normal DCI, it is possible to only dispatch one of them TB, and the TB of CCA is mapped to this TB；And another TB is disabling.Can be fix to think that TB1 is available；Or, it is possible to it is fix to think that TB2 is available；Or, it is also possible to be according to the control information of two TB in normal DCI, for instance, the combination of the information of MCS and RV judges which TB is available, when namely restriction can only have the combination of MCS and the RV of a TB to indicate this TB can；Or, indicate which TB to be available by other information in high-level signaling or DCI format, correspondingly, UE determines the TB allowing scheduling in CCB according to instruction information.Or, it is respectively compared NDI in the front NDI once transmitted and current DCI of the TB of CCA, if the NDI of only one of which TB is constant, then constant for this NDI TB transmits on CCB.It addition, to returning DCI, only support that the TB of scheduling one TB, CCA is mapped to this TB.According to the HARQ procedure ID in DCI format, compare the NDI value of the previous data transmission of CCA and the NDI value of current DCI.If the value change of NDI, it is believed that be situation about makeing mistakes.If the value of NDI is constant, it is believed that this is that the data of this HARQ procedure ID of corresponding CCA retransmit.

Second method is the data transmitting CCA on the data channel to CCB, one of them TB, and another TB transmits for the data of CCB.To normal DCI, it is possible to fix and think that the TB of CCA is the TB1 being mapped to the CCB data channel dispatched；Or, it is also possible to it is fix to think that the TB of CCA is the TB2 being mapped to the CCB data channel dispatched；Or, indicate the TB of CCA to be mapped to CCB on which TB of the data channel of scheduling by other information in high-level signaling or DCI format, correspondingly, UE determines the TB allowing to dispatch in CCB according to instruction information.It addition, to returning DCI, only support that the TB of scheduling one TB, CCA is mapped to this TB.The TB of these mapping CCA data corresponding, according to the HARQ procedure ID in DCI format, compares the NDI value of the previous data transmission of CCA and the NDI value of current DCI.If the value change of NDI, it is believed that be situation about makeing mistakes.If the value of NDI is constant, it is believed that this is that the data of this HARQ procedure ID of corresponding CCA retransmit.TB to the data not mapping CCA, according to the HARQ procedure ID in DCI format, compares the NDI value of the previous data transmission of this TB of CCB and the NDI value of current DCI, it is judged that it is new data or the re-transmission of this TB of corresponding CCB.Here, the TB2 TB of CCA being mapped to the data channel of CCB has a benefit, because on CCB, it is TB1 with returning the DCI TB dispatched, adopt such method, it is possible to support to transmit at TB2 the TB of CCA in a subframe of CCB, and on TB1, retransmit the TB1 of CCB simultaneously.

Assume that CCA is configured with the TM of two TB, and CCB is configured with the TM of a TB, because CCA is same as CCB, CCB scarcely and can not send the new data of CCA.Corresponding processing method is described below.Because the transmittability of CCB only one of which TB, it is possible to fix and think that only the TB1 of CCA could transmit on CCB.Or, fix and think that only the TB2 of CCA could transmit on CCB.Or, the TB index of current transmission CCA is to obtain according to some other information, for instance, remember that the index of a kind of information is k, then the TB index of the CCA of current transmission can be mod (k, 2)+1.Above-mentioned for indicate the TB of the CCA of the current transmission information indexed can be PDCCH/EPDCCH channel index in the search volume of UE, subframe index, CC index and distribution data channel the information such as initial PRB index in one or more.Or, indicated which TB of CCA to transmit at CCB by other information in high-level signaling or DCI, correspondingly, UE is according to instruction information determines which TB that data are CCA of transmission (i.e. the TB of instruction information instruction).Or, the NDI territory in DCI format directly indicates the TB of current re-transmission, for instance, NDI is the re-transmission indicating the TB1 to CCA equal to 0, and NDI is the re-transmission indicating the TB2 to CCA equal to 1.Or, it is respectively compared NDI in the front NDI once transmitted and current DCI of two TB of CCA, if the NDI of only one of which TB is constant, then constant for this NDI TB transmits on CCB；Further, if the NDI of two TB is constant or changes, can be that the TB1 only having CCA could transmit on CCB, or, only the TB2 of CCA could transmit on CCB, or, indicated which TB of CCA to transmit at CCB by other information in high-level signaling or DCI, correspondingly, UE determines which TB that data are CCA (i.e. the TB of instruction information instruction) of transmission according to instruction information.The TB of these mapping CCA data corresponding, according to the HARQ procedure ID in DCI format, compares the NDI value of the previous data transmission of CCA and the NDI value of current DCI.If the value change of NDI, it is believed that be situation about makeing mistakes.If the value of NDI is constant, it is believed that this is that the data of this HARQ procedure ID of corresponding CCA retransmit.Here, it is allowed to the benefit of the TB being mapped to CCB transmission of change CCA is that one of them TB avoiding CCA can not be retransmitted for a long time.Such as, assume that the TB1 of only CCA just can be mapped to CCB transmission, when the TB2 once transmitted before CCA is incorrect, the TB2 of CCA can not retransmit on CCB, simultaneously for a long time can not busy channel on the CC of TM supporting 2 TB, this causes that the TB2 of CCA can not retransmit for a long time, it reduces the performance of HARQ operation.

Embodiment three

To the UE working in CA pattern, it is configured with N number of carrier wave by RRC signaling to UE.But, because the reason of channel occupancy and base station scheduling, the carrier wave exempting from licensed band only just can be actually used in data transmission in portion of time, and the equipment participating in competition is more many, and the time scale that equipment can compete channel is more little.From the average effect of UE side, the data volume that UE can transmit within a period of time is the reduction of.So, to a carrier wave, it is possible to be not required to can transmit data according to All Time and design across carrier wave HARQ procedure.

From UE side, above-mentioned N number of carrier wave can be equivalent to and be configured with M virtual carrier (VCC), and the time scale that this M VCC is actually allocated to UE is bigger.M is less than or equal to N.Here, on N number of carrier wave of configuration UE, the data of transmission may be considered initial transmission or the HARQ re-transmission of the data of corresponding above-mentioned M VCC.As such, it is possible to process the behavior of UE based on VCC.That is, performing when the HARQ transmission of carrier wave, to data, the physical channel place CC of its initial transmission and re-transmission can be different, but initial transmission and re-transmission to these data use same VCC to identify.Here, a HARQ procedure VCC index and HARQ procedure ID combine mark.Being transmitted as example with downlink data, the data of identical VCC allow to be transmitted on the PDSCH of different CC, and UE is when downlink data receiving, it is possible to the first biography of the data of same HARQ procedure ID identical for VCC and re-transmission thereof are carried out HARQ merging.

In order to support the HARQ transmission across carrier wave, it is necessary to the data of instruction current scheduling are which VCC corresponding.The method of the first instruction VCC index is instruction VCC index in the Downlink Control Information (DCI) of schedule data transmission, such as increase extra VCC index information territory, or reuse existing information field instruction VCC index information, thus indicate which VCC actually corresponding of the data transmission in a subframe.The method of the second instruction VCC index sends the instruction information of a VCC index and is applied in continuous multiple subframes of a carrier wave, such as, to the community exempting from licensed band, when sending the channel occupancy instruction information of this community, indicate data transmission which VCC corresponding in all subframes of this time channel occupancy simultaneously.Above-mentioned instruction information still can be through Downlink Control Information and transmits, such as, a DCI format in public search space (CSS) is adopted to send channel occupancy instruction information and the above-mentioned VCC information being applied to continuous multiple subframe, the bit number of this DCI format is equal with DCI format 1A or 1C, thus not increasing the blind Detecting number of times of DCI format.

As N number of CC of configuration UE, and to the data of a VCC when carrier wave HARQ transmission can carry out on arbitrary CC, each VCC must distribute unique VCC index.When N number of CC of configuration UE is divided into multiple groups, and when carrier wave HARQ transmission is limited only in each group to carry out respectively, in a group, each VCC must distribute unique VCC index, but the VCC of different groups index can be identical or different.Being transmitted as example with downlink data, to the self scheduling (selfscheduling) on a CC, the downlink data of its scheduling just takies the PDSCH of this CC and transmits, and namely the data of corresponding VCC are in the PDSCH transmission of this CC.To across carrier dispatching, the downlink data of its scheduling is to transmit at the PDSCH of the CC indicated by CIF territory, and namely the PDSCH of the CC that the data of corresponding VCC indicate in CIF territory transmits.

In LTE system, the CC of each configuration can correspondingly be configured its transmission mode (TM).To above-mentioned according to the VCC method processing UE, it is necessary to know the TM of each VCC, namely distinguishing the VCC TB number can simultaneously transmitted in a subframe is 1 or 2.The first processing method is to adopt high-level signaling, is respectively configured the TB number can simultaneously transmitted in a subframe of each VCC.The second processing method is to adopt high-level signaling to be arranged in a subframe TB number that can carry, and is applied to all VCC.The third method is that each VCC predefined can transmit TB number in a subframe simultaneously, for instance, fix and think that each VCC can have 2 TB in a subframe.4th kind of method is when configuring each CC of N number of CC of UE, whether indicates the configuration information of a CC for mapping out the configuration information of a VCC simultaneously.To the CC that have mapped VCC, it is possible to obtain the TM of the VCC of its correspondence according to the TM of this CC.Fifth method is directly to configure the VCC number M of UE with high-level signaling, and think configuration UE N number of CC in the TM of front M CC face toward the TM of this M VCC successively.6th kind of method is the TM according to this group CC, as long as there being a CC to be configured with the TM supporting 2 TB, being considered as this each VCC organizing CC TB number that can carry in a subframe is 2；Otherwise it is assumed that the TB number that each VCC of this group CC can carry in a subframe of a CC is 1.7th kind of method is one numerical value X of configuration, for instance, making front X the VCC TB number that can carry in a subframe is 2；The TB number that other M-X VCC can carry in a subframe is 1, M is the sum of VCC.

Here, the data of the VCC of the TM of the single TB of corresponding configuration can only be mapped to support transmission on the CC of the TM of single TB, and the data of the VCC of the TM of the double; two TB of corresponding configuration can only be mapped to support transmission on the CC of the TM of double; two TB.Or, the data of the VCC of the TM of the single TB of corresponding configuration can only be mapped to support transmission on the CC of the TM of single TB, and the data of the VCC of the TM of the double; two TB of corresponding configuration allow for being mapped to and transmit on any one CC.Or, the data of the VCC of the TM of the single TB of corresponding configuration allow for being mapped to be transmitted on any one CC, and the data of the VCC of the TM of the double; two TB of corresponding configuration can only be mapped to support transmission on the CC of the TM of double; two TB.Or, the data of any one VCC corresponding may map to transmit on any one CC.

To a data transfer, below according to VCC and the CCB the dispatching data channel place method being respectively described the present invention.

Assume that VCC and CCB is configured with the TM of a TB, according to the HARQ procedure ID in DCI format, compare the NDI value of the previous data transmission of VCC and the NDI value of current DCI, it is judged that the data of current scheduling are new data or re-transmission.If the value change of NDI, it is believed that this is the new data of this HARQ procedure ID of corresponding VCC.If the value of NDI is constant, it is believed that this is that the data of this HARQ procedure ID of corresponding VCC retransmit.

Assume that VCC and CCB is configured with the TM of two TB, according to the HARQ procedure ID in DCI format, to two TB, be respectively compared the NDI value of the previous data transmission of VCC and the NDI value of current DCI, it is judged that the data of current scheduling are new data or re-transmission.If the value of the NDI of two TB all changes, it is believed that the two TB is the new data of this HARQ procedure ID of corresponding VCC.If the value of the NDI of two TB is all constant, it is believed that the two TB is the re-transmission of this HARQ procedure ID of corresponding VCC.If the NDI of only one of which TB is constant, the data that TB constant for corresponding NDI is this HARQ procedure ID of VCC retransmit, and to another TB are the new data of this HARQ procedure ID of VCC.

Assume that VCC is configured with the TM of a TB, and CCB is configured with the TM of two TB, and corresponding processing method is described below.The data channel that can limit CCB can only dispatch the data of a TB.To normal DCI, it is possible to only dispatch one of them TB, and the TB of VCC is mapped to this TB；And another TB is disabling.Can be fix to think that TB1 is available；Or, it is possible to it is fix to think that TB2 is available；Or, it is also possible to be according to the control information of two TB in normal DCI, for instance, the combination of the information of MCS and RV judges which TB is available, when namely restriction can only have the combination of MCS and the RV of a TB to indicate this TB can；Or, indicate which TB to be available by other information in high-level signaling or DCI format, correspondingly, UE determines the TB allowing scheduling in CCB according to instruction information.It addition, to returning DCI, only support that the TB of scheduling one TB, VCC is mapped to this TB.According to the HARQ procedure ID in DCI format, compare the NDI value of the previous data transmission of VCC and the NDI value of current DCI, it is judged that the data of current scheduling are new data or re-transmission.If the value change of NDI, it is believed that this is the new data of this HARQ procedure ID of corresponding VCC.If the value of NDI is constant, it is believed that this is that the data of this HARQ procedure ID of corresponding VCC retransmit.

Assume that VCC is configured with the TM of two TB, and CCB is configured with the TM of a TB, and corresponding processing method is described below.Because the transmittability of CCB only one of which TB, it is possible to fix and think that only the TB1 of VCC could transmit on CCB.Or, fix and think that only the TB2 of VCC could transmit on CCB.Or, the TB index of current transmission VCC is to obtain according to some other information, for instance, remember that the index of a kind of information is k, then the TB index of the VCC of current transmission can be mod (k, 2)+1.Above-mentioned for indicate the TB of the VCC of the current transmission information indexed can be PDCCH/EPDCCH channel index in the search volume of UE, subframe index, VCC index, CC index and distribution data channel the information such as initial PRB index in one or more.Or, indicated which TB of VCC to transmit at CCB by other information in high-level signaling or DCI, correspondingly, UE is according to instruction information determines which TB that data are VCC of transmission (i.e. the TB of instruction information instruction).Or, it is respectively compared NDI in the front NDI once transmitted and current DCI of two TB of VCC, if the NDI of only one of which TB is constant, then constant for this NDI TB transmits on CCB；If the NDI of two TB is constant or all changes, it is possible to be that the TB1 only having VCC could transmit on CCB；Or, only the TB2 of VCC could transmit on CCB；Or, indicated which TB of VCC to transmit at CCB by other information in high-level signaling or DCI, correspondingly, UE is according to instruction information determines which TB that data are VCC of transmission (i.e. the TB of instruction information instruction).The TB of this mapping corresponding, according to the HARQ procedure ID in DCI format, compares the NDI value of the previous data transmission of VCC and the NDI value of current DCI, it is judged that the data of current scheduling are new data or re-transmission.If the value change of NDI, it is believed that this is the new data of this HARQ procedure ID of corresponding CCA.If the value of NDI is constant, it is believed that this is that the data of this HARQ procedure ID of corresponding CCA retransmit.Here, it is allowed to the benefit of the TB being mapped to CCB transmission of change VCC is that one of them TB avoiding VCC can not be retransmitted for a long time.Such as, assume that the TB1 of only VCC just can be mapped to CCB transmission, when the TB2 once transmitted before VCC is incorrect, the TB2 of VCC can not retransmit on CCB, assume that other are supported also is for a long time can not busy channel on the CC of the TM of 2 TB simultaneously, this causes that the TB2 of VCC can not retransmit for a long time, it reduces the performance of HARQ operation.

Embodiment four

To the UE working in CA pattern, it is configured with N number of carrier wave by RRC signaling to UE.But, because the reason of channel occupancy and base station scheduling, the carrier wave exempting from licensed band only just can be actually used in data transmission in portion of time, and the equipment participating in competition is more many, and the time scale that equipment can compete channel is more little.From the average effect of UE side, the data volume that UE can transmit within a period of time is less.So, to a carrier wave, it is possible to be not required to can transmit data according to All Time and design across carrier wave HARQ procedure.

In order to support HARQ transmission across carrier wave and re-transmission, associating HARQ procedure can be defined, to data, the physical channel place CC of its initial transmission and re-transmission can be different, but initial transmission and re-transmission to these data use same associating HARQ procedure to identify.So, when dispatching data, DCI format is transmitted an associating HARQ procedure ID, is used for identifying the associating HARQ procedure corresponding to data of current scheduling.It is transmitted as example with downlink data, to combining HARQ procedure, passes at the beginning of the HARQ to same data and re-transmission is no longer limited on a CC, but may map on different CC；UE is when downlink data receiving, it is possible to the first biography of data identical for associating HARQ procedure ID and re-transmission thereof are carried out HARQ merging.Here, supporting when the HARQ of carrier wave, it is necessary to the sum of associating HARQ procedure is less than or equal to the summation of each CC maximum HARQ procedure number individually calculated.As such, it is possible to configure the UE sum needing the associating HARQ procedure of transmission with high-level signaling, and process the behavior of UE based on associating HARQ procedure.In order to support HARQ transmission across carrier wave and re-transmission, it is possible to increase an information field in DCI format, or reuse existing information field in DCI, send the associating HARQ procedure ID corresponding to the data of current scheduling.

As N number of CC of configuration UE, and to the data that is combined HARQ procedure ID when carrier wave HARQ transmission can carry out on arbitrary CC, each associating HARQ procedure must distribute unique associating HARQ procedure ID.When N number of CC of configuration UE is divided into multiple groups, and when carrier wave HARQ transmission is limited only in each group to carry out respectively, in a group, each associating HARQ procedure must distribute unique associating HARQ procedure ID, but the ID of the associating HARQ procedure of different groups can be identical or different.Being transmitted as example with downlink data, to the self scheduling (selfscheduling) on a CC, the downlink data of its scheduling just takies the PDSCH of this CC and transmits, and namely the data of corresponding associating HARQ procedure ID are in the PDSCH transmission of this CC.To across carrier dispatching, the downlink data of its scheduling is to transmit at the PDSCH of the CC indicated by CIF territory, and namely the PDSCH of the CC that the data of corresponding associating HARQ procedure ID indicate in CIF territory transmits.

To above-mentioned be according to associating HARQ procedure process UE behavior method, in addition it is also necessary to indicate the TB number that each associating HARQ procedure can carry in a subframe of a CC further, i.e. 1 TB or 2 TB.First method is to be respectively configured the TB number that can carry in a subframe of a CC representated by each associating HARQ procedure ID with high-level signaling.Second method is to be arranged in a subframe of a CC, with high-level signaling, the TB number that can carry, and is applied to all of associating HARQ procedure.The third method is the TB number that predefined all associating HARQ procedure can carry in a subframe of a CC is a particular value, for instance 2 TB, thus indicating MIMO transmission pattern.4th kind of method is the TM according to this group CC, as long as there being a CC to be configured with the TM supporting 2 TB, being considered as the TB number that each associating HARQ procedure can carry in a subframe of a CC is 2；Otherwise it is assumed that the TB number that each associating HARQ procedure can carry in a subframe of a CC is 1.Fifth method is one numerical value X of configuration, for instance, making the TB number that front X associating HARQ procedure can carry in a subframe of a CC is 2；Other Mg-X the associating TB number that can carry in a subframe of a CC of HARQ procedure is 1, Mg is the sum of associating HARQ procedure of configuration UE.6th kind of method is that basis determines current corresponding for this HARQ procedure ID TB number that can carry in a subframe of a CC in the transmission mode of the physics CC shared by a last initial transmission combining HARQ procedure ID.

Here, the data of the associating HARQ procedure ID of the single TB of corresponding configuration can only be mapped to support transmission on the CC of the TM of single TB, and the data of the associating HARQ procedure ID of the double; two TB of corresponding configuration can only be mapped to support transmission on the CC of the TM of double; two TB.Or, the data of the associating HARQ procedure ID of the single TB of corresponding configuration can only be mapped to support transmission on the CC of the TM of single TB, and the data of the associating HARQ procedure ID of the double; two TB of corresponding configuration allow for being mapped to and transmit on any one CC.Or, the data of the associating HARQ procedure ID of the single TB of corresponding configuration allow for being mapped to be transmitted on any one CC, and the data of the associating HARQ procedure ID of the double; two TB of corresponding configuration can only be mapped to support transmission on the CC of the TM of double; two TB.Or, the data of corresponding any one associating HARQ procedure ID may map to transmit on any one CC.

To a data transfer, below according to associating HARQ procedure and the CCB the dispatching data channel place method being respectively described the present invention.

Assume that associating HARQ procedure and CCB are configured with the TM of a TB, according to the associating HARQ procedure ID in DCI format, compare the NDI value of its previous data transmission and the NDI value of current DCI, it is judged that the data of current scheduling are new data or re-transmission.If the value change of NDI, it is believed that this is a new data of corresponding this associating HARQ procedure ID.If the value of NDI is constant, it is believed that this is the data re-transmission of corresponding this associating HARQ procedure ID.

Assume that associating HARQ procedure and CCB are configured with the TM of two TB, according to the HARQ procedure ID in DCI format, to two TB, it is respectively compared the NDI value of the previous data transmission of this associating HARQ procedure and the NDI value of current DCI, it is judged that the data of current scheduling are new data or re-transmission.If the value of the NDI of two TB all changes, it is believed that the two TB is the new data of corresponding this associating HARQ procedure ID.If the value of the NDI of two TB is all constant, it is believed that the two TB is the re-transmission of corresponding this associating HARQ procedure ID.If the NDI of only one of which TB is constant, the data that corresponding TB constant for NDI is this HARQ procedure ID of this associating HARQ procedure ID retransmit, and are the new datas of this associating HARQ procedure ID to another TB.

Assume that associating HARQ procedure is configured with the TM of a TB, and CCB is configured with the TM of two TB, and corresponding processing method is described below.The data channel that can limit CCB can only dispatch the data of a TB.To normal DCI, it is possible to only dispatch one of them TB, and the TB combining HARQ procedure is mapped to this TB；And another TB is disabling.Can be fix to think that TB1 is available；Or, it is possible to it is fix to think that TB2 is available；Or, it is also possible to be according to the control information of two TB in normal DCI, for instance, the combination of the information of MCS and RV judges which TB is available, when namely restriction can only have the combination of MCS and the RV of a TB to indicate this TB can；Or, indicate which TB to be available by other information in high-level signaling or DCI format, correspondingly, UE determines the TB allowing scheduling in CCB according to instruction information.It addition, to returning DCI, only support one TB of scheduling, the TB of associating HARQ procedure is mapped to this TB.According to the associating HARQ procedure ID in DCI format, compare the NDI value of its previous data transmission and the NDI value of current DCI, it is judged that the data of current scheduling are new data or re-transmission.If the value change of NDI, it is believed that this is a new data of corresponding this associating HARQ procedure ID.If the value of NDI is constant, it is believed that this is the data re-transmission of corresponding this associating HARQ procedure ID.

Assume that associating HARQ procedure is configured with the TM of two TB, and CCB is configured with the TM of a TB, and corresponding processing method is described below.Because the transmittability of CCB only one of which TB, it is possible to fix and think that only the TB1 of associating HARQ procedure could transmit on CCB.Or, fix and think that only the TB2 of associating HARQ procedure could transmit on CCB.Or, the TB index of current transmission associating HARQ procedure is to obtain according to some other information, for instance, remember that the index of a kind of information is k, then the TB index of the associating HARQ procedure of current transmission can be mod (k, 2)+1.Above-mentioned for indicate the TB of the associating HARQ procedure of the current transmission information indexed can be PDCCH/EPDCCH channel index in the search volume of UE, subframe index, associating HARQ procedure ID, CC index and distribution data channel the information such as initial PRB index in one or more.Or, indicated which TB of associating HARQ procedure to transmit at CCB by other information in high-level signaling or DCI, correspondingly, UE is according to instruction information determines which TB that data are associating HARQ procedure of transmission (i.e. the TB of instruction information instruction).Or, it is respectively compared NDI in the front NDI once transmitted and current DCI of two TB of associating HARQ procedure, if the NDI of only one of which TB is constant, then constant for this NDI TB transmits on CCB；If the NDI of two TB is constant or all changes, it is possible to be that the TB1 only having associating HARQ procedure could transmit on CCB；Or, indicated which TB of associating HARQ procedure to transmit at CCB by other information in high-level signaling or DCI, correspondingly, UE is according to instruction information determines which TB that data are associating HARQ procedure of transmission (i.e. the TB of instruction information instruction).The TB of this mapping corresponding, according to the associating HARQ procedure ID in DCI format, compares the NDI value of its previous data transmission and the NDI value of current DCI, it is judged that the data of current scheduling are new data or re-transmission.If the value change of NDI, it is believed that this is a new data of corresponding this associating HARQ procedure ID.If the value of NDI is constant, it is believed that this is the data re-transmission of corresponding this associating HARQ procedure ID.Here, it is allowed to the benefit changing the TB being mapped to CCB transmission of an associating HARQ procedure is that one of them TB avoiding this associating HARQ procedure can not be retransmitted for a long time.Such as, assume that the TB1 of only associating HARQ procedure just can be mapped to CCB transmission, when the TB2 once transmitted before this associating HARQ procedure is incorrect, the TB2 of this associating HARQ procedure can not retransmit on CCB, assume that other are supported also is for a long time can not busy channel on the CC of the TM of 2 TB simultaneously, this causes that the TB2 of this associating HARQ procedure can not retransmit for a long time, it reduces the performance of HARQ operation.

In the above-mentioned the application of being, HARQ transmission method implements.Present invention also provides the equipment of HARQ transmission, it is possible to be used for implementing above-mentioned HARQ transmission method.Fig. 2 is the basic structure schematic diagram of this equipment, and as shown in Figure 4, this equipment includes: configuration receives unit, scheduling unit and data transmission/reception unit.

Wherein, configuration receives unit, for receiving base station about the configuration information across HARQ transmission.Scheduling unit, for receiving the Downlink Control Information that base station sends, and determines the data channel that this Downlink Control Information is dispatched.Data transmission/reception unit, for the data channel determined at scheduling unit, sends upstream data or downlink data receiving according to configuration information.

The foregoing is only presently preferred embodiments of the present invention, not in order to limit the present invention, all within the spirit and principles in the present invention, any amendment of making, equivalent replacement, improvement etc., should be included within the scope of protection of the invention.

Claims

1. a method for hybrid automatic repeat-request HARQ transmission, including:

2. method according to claim 1, it is characterised in that described UE receives CC and indicates information, for identifying the CC of current scheduling data；Wherein, CC indicates the data that information is identical to allow transmission on the data channel of different CC；

3. method according to claim 2, it is characterised in that described CC indicates information to be CC index in all CC being allocated to described UE；

4. method according to claim 2, it is characterized in that, as the TM adopting the transmission mode TM of one transmission block TB of configuration and the data channel place CC of described scheduling to adopt two TB of configuration of the CC indicated by described CC instruction information, the mode at the data channel transmitting data of described scheduling includes:

5. method according to claim 2, it is characterized in that, when described CC indicates the CC of information instruction to adopt the CC at the TM of two TB of configuration and the data channel place of the described scheduling TM adopting one TB of configuration, the mode at the data channel transmitting data of described scheduling includes:

6. the method according to claim 2,4 or 5, it is characterized in that, described CC indicates the initial transmission of the data that CC is its mark of information instruction or shared by physical channel CC of re-transmission, or, described CC indicates the CC of information instruction to be any one that be allocated in the CC of described UE.

7. the method according to claim 2,4 or 5, it is characterised in that if the data of current scheduling are new data, then the CC indicated by CC instruction information in described Downlink Control Information is consistent with the index of the data channel place CC of described scheduling；

8. the method according to claim 6 or 7, it is characterised in that described CC indicates information to be carried by the new definition in DCI format in Downlink Control Information or existing information territory；Or, described CC indicates information to be carried by a DCI format in public search space, and this CC indicates information that continuous multiple subframes are effective.

9. method according to claim 7, it is characterised in that when the data channel place CC of CC and described scheduling indicated by described CC instruction information all adopts the TM of two TB of configuration,

10. method according to claim 7, it is characterized in that, as the TM adopting the transmission mode TM and current scheduling data channel place CC of one transmission block TB of configuration to adopt two TB of configuration of the CC indicated by described CC instruction information, the mode at described current scheduling data channel transmitting data includes:

11. method according to claim 1, it is characterised in that described UE receives virtual carrier VCC information, it is used for the VCC indicating current data corresponding；Wherein, the data of identical VCC allow transmission on the PDSCH of different CC；

12. method according to claim 11, it is characterised in that described VCC information is carried by the self-defined or existing information territory in DCI format in Downlink Control Information；Or, described VCC information is carried by a DCI format in public search space, and this CC indicates information that continuous multiple subframes are effective.

13. method according to claim 11, it is characterised in that the index information for the described UE each VCC distributed is all different；

14. method according to claim 11, it is characterised in that each VCC for being allocated to described UE configures the mode of transmission mode and includes:

15. method according to claim 11, it is characterised in that the mode at the data channel transmitting data of scheduling includes:

16. method according to claim 11, it is characterized in that, as the described VCC TM adopting the TM of one TB of configuration and the data channel place CC of described scheduling to adopt two TB of configuration, the data channel limiting described scheduling can only dispatch the data of a TB, and the TB of described VCC is mapped to the TB of this permission scheduling；Wherein, to normal DCI, it is determined that in the data channel of described scheduling, the mode of permission scheduling TB is:

17. method according to claim 11, it is characterised in that as the described VCC TM adopting the TM of two TB of configuration and the data channel place CC of described scheduling to adopt one TB of configuration, the mode at the data channel transmitting data of described scheduling includes:

18. method according to claim 1, it is characterised in that described UE receives associating HARQ procedure ID, it is used for the associating HARQ procedure indicating current data corresponding；Wherein, the data of same associating HARQ procedure allow transmission on the PDSCH of different CC；

19. method according to claim 18, it is characterised in that the associating HARQ procedure ID of each associating HARQ procedure is all different；

20. method according to claim 18, it is characterised in that configure the mode of TM on a CC for each associating HARQ procedure of described UE and include:

21. method according to claim 18, it is characterised in that the mode at the data channel transmitting data of described scheduling includes:

22. method according to claim 18, it is characterized in that, as the TM that described associating HARQ procedure adopts the TM of one TB of configuration and the data channel place CC of described scheduling to adopt two TB of configuration, the data channel limiting described scheduling can only dispatch the data of a TB, and the TB of described associating HARQ procedure is mapped to the TB of this permission scheduling；Wherein, to normal DCI, it is determined that in the data channel of described scheduling, the mode of permission scheduling TB is:

23. method according to claim 18, it is characterized in that, when combining HARQ procedure and adopting the TM that the TM of two TB of configuration and the data channel place CC of described scheduling are configured with a TB, the mode at the data channel transmitting data of described scheduling includes:

24. an equipment for hybrid automatic repeat-request HARQ transmission, including: configuration receives unit, scheduling unit and data transmission/reception unit；