CN107566097A - The HARQ feedback method of user equipment and downlink data - Google Patents
The HARQ feedback method of user equipment and downlink data Download PDFInfo
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- CN107566097A CN107566097A CN201610506084.5A CN201610506084A CN107566097A CN 107566097 A CN107566097 A CN 107566097A CN 201610506084 A CN201610506084 A CN 201610506084A CN 107566097 A CN107566097 A CN 107566097A
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Abstract
The HARQ feedback method of user equipment and downlink data, methods described include：Receive the downlink data that base station is sent in subframe n PDSCH；Using the HARQ information of downlink data described in subframe n+N PUCCH resource to base station feedback, N is the integer more than or equal to 1；When it is determined that the HARQ information of downlink data described in the PUCCH resource to base station feedback of the subframe n+N can not be used, the HARQ information of downlink data described in the PUCCH resource to the base station feedback of the subframe after subframe n+N is used.Above-mentioned scheme, it is possible to achieve using unlicensed spectrum in time to the HARQ information of downlink data corresponding to base station feedback, the quality of the data transfer between raising user equipment and base station.
Description
Technical field
The present invention relates to wireless communication technology, more particularly to the HARQ of a kind of user equipment and downlink data
Feedback method.
Background technology
Long Term Evolution (Long Term Evolution, LTE) system, which can use, authorizes (licensed) frequency
Rate resource carries out data transmission, but authorizes frequency resource very rare, therefore operator starts to consider fully
Using unauthorized (unlicensed) frequency resource, as 5GHz frequency resource carries out data transmission.
Before 5GHz frequency resources, user equipment (UE) needs to use listen-before-talk or listem-before-talk
Whether the mechanism of (Listen Before Talk, LBT), monitoring are having other users equipment such as WLAN
Using unlicensed frequencies resource, if channel busy, need to wait；If channel idle, can make
With for a period of time, 4ms unlicensed frequencies resources are such as at most used in Japan.When this is using completing,
User equipment needs to discharge the unlicensed frequencies resource, then monitors again and obtains unlicensed frequencies next time
The right to use of resource.
Auxiliary authorizes access (Licensed Assisted Access using LTE, LAA) technology, with carrier wave
The mode of polymerization utilizes unlicensed spectrum, i.e., using unlicensed spectrum as secondary cell (Secondary Cell,
SCell user equipment (UE)) is allocated to, this SCell can be referred to as LAA SCell.In LAA SCell
On, when base station (eNB) in subframe n in Physical Downlink Shared Channel (Physical Downlink Shared
Channel, PDSCH) to UE carry out downlink data transmission, UE need subframe n+4 send for
The hybrid automatic repeat-request (Hybrid Automatic Repeat reQuest, HARQ) of downlink data should
Answer.If UE can accurately receive downlink data, UE needs to indicate to confirm (ACK) in subframe n+4
Information；If can not accurately receive downlink data or be not received by downlink data, UE is in the subframe
Instruction does not confirm (NACK) information.
In the prior art, due to needing to use listem-before-talk mechanism when using unlicensed spectrum, cause to use
Family equipment can not have impact on the information exchange between base station and user equipment in time to base station HARQ information.
The content of the invention
Present invention solves the technical problem that it is how to use unlicensed spectrum in time to corresponding to base station feedback
The HARQ information of downlink data, improve the quality of the data transfer between user equipment and base station.
In order to solve the above technical problems, the embodiment of the present invention provides a kind of HARQ feedback side of downlink data
Method, methods described include：Receive the downlink data that base station is sent in subframe n PDSCH；Use son
The HARQ information of downlink data described in frame n+N PUCCH resource to base station feedback, N be more than etc.
In 1 integer；When it is determined that can not use described in the PUCCH resource to base station feedback of the subframe n+N
During the HARQ information of downlink data, using the PUCCH resource of the subframe after subframe n+N to described
The HARQ information of downlink data described in base station feedback.
Alternatively, subframe after in subframe n+N needs to feed back the downlink data of one or more subframes
HARQ information when, in addition to：The HARQ of the downlink data of one or more of subframes is calculated
The bit number summation of information；It is determined that PUCCH format corresponding with the bit number summation being calculated；From son
Corresponding to PUCCH format determined by being chosen in the PUCCH resource of subframe after frame n+N
PUCCH resource, generate the HARQ information of the downlink data of one or more of subframes and send extremely
The base station；Wherein, in the HARQ information of the corresponding PUCCH format generated, institute
The HARQ information for stating the downlink data of one or more subframes arranges according to default order.
Alternatively, the default order includes：For the HARQ of the downlink data of the subframe of different districts
Information, arranged according to the incremental order of cell index；For the HARQ of the downlink data of same cell
Information, arranged according to the incremental order of the subframe sequence number of corresponding downlink data；For supporting 2 transmission
The HARQ information of the downlink data of the same subframe of the same cell of block, then be incremented by according to transmission block sequence number
Order arrangement.
Alternatively, methods described also includes：Time threshold is sent still without normal direction institute when reaching default delay
When stating the HARQ information of downlink data described in base station feedback, then not to downlink data described in base station feedback
HARQ information.
Alternatively, the PUCCH resource of the subframe after the subframe n+N by base station beforehand through RRC
Signal deployment.
Alternatively, the PUCCH resource of the subframe after the subframe n+N includes：1 is used for form
1a or form 1b PUCCH resource, 4 PUCCH moneys for being used for the form 1b with Channel assignment
Source and 1 PUCCH resource for being used for form 3.
The embodiment of the present invention additionally provides a kind of user equipment, including：Receiving unit, suitable for receiving base station
In the downlink data that subframe n PDSCH is sent；HARQ response units, it is adapted in use to subframe n+N
PUCCH resource to base station feedback described in downlink data HARQ information, N be more than or equal to 1
Integer；When it is determined that lower line number described in the PUCCH resource to base station feedback of the subframe n+N can not be used
According to HARQ information when, it is anti-to the base station using the PUCCH resource of the subframe after subframe n+N
Present the HARQ information of the downlink data.
Alternatively, the HARQ response units, it is further adapted for the PUCCH of subframe after subframe n+N
When resource needs to feed back the HARQ information of the downlink data of one or more subframes, described one is calculated
The bit number summation of the HARQ information of the downlink data of individual or multiple subframes；It is determined that with the ratio that is calculated
PUCCH format corresponding to special number summation；Selected from the PUCCH resource of the subframe after subframe n+N
PUCCH resource corresponding to PUCCH format determined by taking, generates one or more of lower line numbers
According to HARQ information HARQ and send to the base station；Wherein, it is described corresponding what is generated
In the HARQ information of PUCCH format, the HARQ information of one or more of downlink datas is pressed
Arranged according to default order.
Alternatively, the default order includes：For the downlink data of the subframes of different districts
HARQ information, arranged according to the incremental order of cell index；For the downlink data of same cell
HARQ information, arranged according to the incremental order of the subframe sequence number of corresponding downlink data；For supporting 2
The HARQ information of the downlink data of the same subframe of the same cell of individual transmission block, then according to transmission block number
The arrangement of number incremental order.
Alternatively, the user equipment also includes：
Response control unit, reach default delay transmission time threshold still without base station described in normal direction suitable for working as
When feeding back the HARQ information of the downlink data, then not to the HARQ of downlink data described in base station feedback
Information.
Alternatively, the PUCCH resource of the subframe after the subframe n+N by base station beforehand through RRC
Signal deployment.
Alternatively, the PUCCH resource of the subframe after the subframe n+N includes：The subframe n+N
The PUCCH resource of subframe afterwards includes：1 PUCCH resource for being used for form 1a or form 1b,
4 PUCCH resources for being used for the form 1b with Channel assignment and 1 PUCCH for being used for form 3
Resource.
Compared with prior art, the technical scheme of the embodiment of the present invention has the advantages that：
Above-mentioned scheme, subframe n+N can not be used to send the HARQ for downlink data in user equipment
During information, by using the PUCCH resource of the subframe after subframe n+N, user equipment can in time to
HARQ information corresponding to base station feedback, so that base station can be carried out accordingly to the downlink data of transmission
Adjustment, lift the quality of downlink data transmission.
Further, the PUCCH resource of the subframe after the subframe n+N includes：1 is used for form
1a or form 1b PUCCH resource, 4 PUCCH moneys for being used for the form 1b with Channel assignment
Source and 1 PUCCH resource for being used for form 3, so that user equipment can be anti-in same subframe
When being fed to the HARQ information of the downlink data of few two subframes, the PUCCH in a subframe can be used
Resource feeds back the HARQ information of the downlink data of at least two subframes, so as to improve HARQ information
The flexibility of feedback and promptness, and then the reliability of downlink data transmission can be improved.
Brief description of the drawings
Fig. 1 is a kind of flow chart of the HARQ feedback method of downlink data of the embodiment of the present invention；
Fig. 2 is the flow chart of the HARQ feedback method of another downlink data of the embodiment of the present invention；
Fig. 3 is the unlicensed frequencies for the LAA SCell c that UE is successfully obtained using subframe 5 simultaneously to subframe
0 and the HARQ information of downlink data of subframe 1 carry out the schematic diagram of response；
Fig. 4 is the unlicensed frequencies for the LAA SCell c that UE is successfully obtained using subframe 5, to LAA
The composition of acknowledgement frame when the HARQ information of SCell c and LAA SCell d downlink data carries out response
Schematic diagram；
Fig. 5 is a kind of structural representation of user equipment in the embodiment of the present invention.
Embodiment
As stated in the Background Art, usual LTE is always deployed in mandate (licensed) frequency that operator possesses
Rate resource, but authorize frequency resource it is very rare, therefore operator start consideration make full use of it is unauthorized
(unlicensed) frequency resource, as 5GHz frequency resource carries out data transmission.Using 5GHz
Before frequency resource, user equipment (UE) needs to use listen-before-talk (Listen Before Talk, LBT)
Mechanism, monitoring whether have other users equipment such as WLAN that the unlicensed frequencies resource is used,
If it is determined that the channel on unlicensed frequencies is in busy condition, then need to wait；When it is determined that unauthorized frequency
Channel in rate is in idle condition, then can use the unlicensed frequencies resource of a period of time.For example,
When Japan can at most be used continuously up to 4ms unlicensed frequencies resource.When this unlicensed frequencies
When resource is using completing, user equipment needs to discharge the unlicensed frequencies resource, then monitors and obtains again
The right to use of unlicensed frequencies resource next time.
LAA technologies utilize unlicensed spectrum in a manner of carrier aggregation, i.e., using unlicensed spectrum as auxiliary small
(Secondary Cell, SCell) is allocated to user equipment (UE) in area, can be referred to as this SCell
LAA SCell.If using prior art, on LAA SCell, base station (eNB) is in subframe n (n
For the integer more than or equal to 0) downlink data transmission is carried out to UE on PDSCH, UE is needed in son
Frame n+4 sends the HARQ responses for downlink data.When downlink data accurately can be received, UE
Need to indicate to confirm (ACK) information in subframe n+4；If it can not accurately receive downlink data or not have
Downlink data is received, then UE indicates not confirm (NACK) information in the subframe.
But UE sends what PUCCH was sent to LAA SCell PDSCH on LAA SCell
When downlink data carries out HARQ responses, it is possible to that unauthorized frequency can not be obtained in time due to LBT
The right to use of rate, cause UE can not be in time to the HARQ information of the base station feedback downlink data so that
Base station can not be adjusted according to the HARQ information of the UE downlink datas fed back to downlink data transmission,
It has impact on the information exchange between base station and user equipment.Herein it should be noted that generally PUCCH
UE main plot (Primary Cell) can be present in, in of the invention, UE is sent on LAA SCell
PUCCH is base station to be configured with some LAA SCell for UE can send PUCCH, and base station needs
To indicate being configured with PUCCH on which LAA SCell in RRC signaling.
Above-mentioned to solve the problems, such as, the embodiment of the present invention can not use subframe n+N transmissions for lower line number
According to HARQ information when, by using the PUCCH resource of the subframe after subframe n+N, user equipment
Can be in time to HARQ information corresponding to base station feedback, so that base station can be to the lower line number of transmission
According to being adjusted correspondingly, the quality of downlink data transmission is lifted.
It is understandable to enable above-mentioned purpose, feature and the beneficial effect of the present invention to become apparent, with reference to
Accompanying drawing is described in detail to the specific embodiment of the present invention.
Fig. 1 shows a kind of flow chart of the HARQ feedback method of downlink data in the embodiment of the present invention.
Referring to Fig. 1, in specific implementation, the HARQ feedback method of the downlink data in the embodiment of the present invention can
With including the steps：
Step S101：Receive the downlink data that base station is sent in subframe n PDSCH.
In specific implementation, downlink data is transmitted in base station on PDSCH in subframe n to UE, and UE is then
The downlink data is received.
Step S102：Judge whether to use described in subframe n+N PUCCH resource to base station feedback
The HARQ information of downlink data；When judged result is to be, step S103 can be performed；Conversely, then
Step S104 can be performed.
In specific implementation, UE carries out lower line number receiving base station subframe n on PDSCH to UE
According to afterwards, it is necessary to n-th subframe after subframe n, i.e. subframe n+N, to base station feedback in subframe n
The HARQ information of the downlink data of transmission.Now, UE can be by LBT it is first determined whether can
Under being transmitted using subframe n+N PUCCH resource to base station feedback subframe n on PDSCH to UE
The HARQ information of row data.Wherein, N numerical value can be arranged to according to the actual needs corresponding to just
Integer.For example, in an embodiment of the present invention, N=4.
Step S103：Using subframe n+N downlink data from PUCCH resource to base station feedback subframe n
HARQ information.
In specific implementation, when successfully obtaining frequency usage temporary in subframe n+N, UE can be with using sub
HARQ information of the frame n+N PUCCH resource to base station feedback subframe n downlink data.
Step S104：Under described in the PUCCH resource to base station feedback of the subframe after subframe n+N
The HARQ information of row data.
In specific implementation, frequency usage is obtained temporary when being failed in subframe n+N, UE can not then make
HARQ information with from subframe n+N PUCCH resource to base station feedback subframe n downlink data.For
Base station is allowd to obtain the HARQ information of subframe n downlink data in time, UE can be attempted
Using the PUCCH resource of the subframe after subframe n+N, as used in subframe n+N+1 PUCCH
Resource, to base station feedback subframe n on PDSCH to UE transmission downlink data HARQ information.
In specific implementation, UE is using subframe of the base station after subframe n+N, i.e. subframe n+N+m's
PUCCH resource, to base station feedback subframe n downlink data HARQ information when, subframe n+N+m
It may also need to feed back HARQ information of the base station in corresponding subframe n+m downlink data.Wherein, m
For the integer more than or equal to 1.
For example, as m=2, UE is using subframe n+N+2 PUCCH resource to base station feedback subframe n
Downlink data HARQ information when, UE may also need to subframe n+N+2 feed back base station in subframe
N+2 is to the HARQ information of the UE downlink datas transmitted on PDSCH, i.e. UE is in subframe n+N+m
Need the HARQ information of the downlink data to base station feedback one or more subframe.Now, UE can
To use subframe n+N+m PUCCH resource by the HARQ of the downlink data of one or more subframe
Information feeds back to base station in the lump, specifically refers to Fig. 2.
Referring to Fig. 2, in specific implementation, the HARQ feedback side of the downlink data in the embodiment of the present invention
Method can include the steps：
Step S201：Receive the downlink data that base station is sent in subframe n PDSCH.
Step S202：Judge whether to use described in subframe n+N PUCCH resource to base station feedback
The HARQ information of downlink data；When judged result is to be, step S203 can be performed；Conversely, then
Step S204 can be performed.
Step S203：Using subframe n+N downlink data from PUCCH resource to base station feedback subframe n
HARQ information.
The introduction that step S201 to S203 is referred to the corresponding steps in above-described embodiment performs, herein
Repeat no more.
Step S204：Judge that the delay of the HARQ information of the downlink data of the subframe n sends time T
Whether reach default delay and send time threshold Tr；When judged result is to be, step 208 can be performed；
Conversely, it can then perform step S205.
Step S205：It is calculated one that the PUCCH resource of the subframe after subframe n+N needs to feed back
Or the bit number summation of the HARQ information of the downlink data of multiple subframes.
In specific implementation, UE using subframe n+N+m PUCCH resource carry out it is one or
The feedback of the HARQ information of the downlink data of multiple subframes, that is, when carrying out HARQ responses, as needed
The bit (bit) of the HARQ information of the downlink data of one or more subframes of feedback counts summations, can be with
The PUCCH resource for choosing corresponding form is fed back.
In specific implementation, UE using subframe n+N+m PUCCH resource need feed back described one
Bit number summation corresponding to the HARQ information of the downlink data of individual or multiple subframes, it is corresponding with PUCCH
The number of serving cell, transmission block (TB) number supported of serving cell corresponding to PUCCH and UE
Need the number of subframe corresponding to the downlink data that feeds back relevant.Wherein, UE needs the HARQ sent
The bit number of information be bit number corresponding to the HARQ information of each serving cell corresponding to PUCCH it
With.The bit number of the HARQ information of each serving cell is bit corresponding to the PDSCH of each subframe
Number sum.The corresponding 1 or 2 HARQ bit of PDSCH of each subframe of each serving cell,
It is equal to the TB number that serving cell is supported.
For example, in an embodiment of the present invention, UE can use form 1, form 1a, lattice as needed
Formula 1b, the form 1b (format 1b with channel selection) or form 3 with Channel assignment
Downlink data from PUCCH resource to the subframe of base station feedback at least two HARQ information, be specifically shown in
Table 1.
Table 1
| UE needs the HARQ-ACK sent bit number | PUCCH format |
| 1 | Form 1a |
| 2 | Form 1b |
| 3 or 4 | Form 1b with Channel assignment |
| More than 4 | Form 3 |
By table 1, PUCCH format used by UE can be according to one or more of sons
The bit number summation of the HARQ information of the downlink data of frame, choose form 1, form 1a, form 1b,
The PUCCH resource of form 1b or form 3 with Channel assignment.Wherein, as the PUCCH of use
When form is form 1a, form 1b or the form 1b with Channel assignment, PUCCH used in UE
Resource is the resource of PUCCH format 1；When the PUCCH format used is form 3, used
PUCCH resource is the resource of PUCCH format 3.
Step S206：It is determined that PUCCH format corresponding with the bit number summation being calculated.
In specific implementation, believe in the HARQ that the downlink data of one or more of subframes is calculated
During the bit number summation of breath, the bit number of the HARQ information fed back as needed and PUCCH format it
Between corresponding relation, can be with PUCCH format used in determination.
Step S207：Determined by being chosen from the PUCCH resource of the subframe after subframe n+N
PUCCH resource corresponding to PUCCH format, generate the downlink data of one or more of subframes
HARQ information HARQ is simultaneously sent to the base station.
In specific implementation, when it is determined that during corresponding PUCCH format, UE can be with corresponding to use
Downlink data of the PUCCH resource of PUCCH format to base station feedback one or more of subframes
HARQ information.
Wherein, the PUCCH resource of subframe n+N+m used in UE can be by base station beforehand through nothing
Line resources control (RRC) signal deployment.For example, in order to meet the HARQ information of different bit numbers
The demand of feedback, base station can include 1 use in corresponding subframe by the PUCCH resource that UE is configured
Resource in form 1a or form 1b PUCCH format 1,4 be used for the form with Channel assignment
1b PUCCH resource and 1 PUCCH resource for being used for PUCCH format 3.
It is to be herein pointed out because subframe n+N+m PUCCH resource needs feedback one or more
The HARQ information of the downlink data of individual subframe, in the PUCCH resource using corresponding PUCCH format
In the HARQ information for generating one or more downlink datas, one or more of downlink datas
HARQ information can be arranged according to default order.Wherein, the default order meets following
Condition：
(1) for different districts subframe downlink data HARQ information, be incremented by according to cell index
Order arrangement；
(2) for same cell downlink data HARQ information, according to corresponding downlink data
The incremental order arrangement of subframe sequence number；
(3) for support 2 transmission blocks same cell same subframe downlink data HARQ believe
Breath, then arranged according to the incremental order of transmission block sequence number.
In an embodiment of the present invention, the HARQ feedback of the information sides of the downlink data in the embodiment of the present invention
Method can also include：
Step S208：Not to base station feedback subframe n downlink data HARQ information.
In specific implementation, for originally should subframe n+N send downlink data HARQ information,
Reach maximum when UE sends time T in delay, that is, reach default delay and send time threshold Tr still
Corresponding to can not being so successfully transmitted during HARQ information, because delay is sent, the time is longer, and UE is again to base
The HARQ information of the downlink data for the subframe sent of standing, for adjustment of the base station to downlink data transmission
It will no longer have that reference significance.Therefore, in order to save resource, time threshold is sent reaching default delay
Value Tr can not still be successfully transmitted HARQ information corresponding to subframe n downlink data, and UE will be no longer to base
The HARQ information of the downlink data of feedback of the standing subframe.Wherein, delay sends time threshold Tr numerical value
It can pre-set according to the actual needs, such as can be by base station by signaled UE, or can also
Provided by agreement.
HARQ feedback of the information below in conjunction with specific example to the downlink data in the embodiment of the present invention
Method is introduced.
Referring to Fig. 3, base station is that UE is configured with two LAA SCell, i.e. LAA SCell c and LAA SCell
d.Wherein, LAA SCell c cell index is less than LAA SCell d cell index, and LAA SCell
C and LAA SCell d support 2 TB, i.e. TB1 and TB2.Wherein LAA SCell c are configured
PUCCH, LAA SCell c and LAA SCell d carry out HARQ responses on the PUCCH.Base
Stand in subframe 0 and subframe 1 respectively in LAA SCell c and LAASCell d in PDSCH to certain UE
Send downlink data.According to sequential relationship, UE needs to send to the descending of descending subframe 0 in subframe 4
The HARQ responses of data, the HARQ responses of the downlink data to descending subframe 1 are sent in subframe 5.
But due to LBT, UE can not obtain LAASCell c frequency usage in up subframe 4
Power, also can not just send the HARQ responses of the downlink data of subframe 0.Afterwards, UE is in up son
Frame 5 is attempted to send PUCCH, if UE successfully obtains c frequency usage power in up subframe 5,
So UE can carry out HARQ responses to the PDSCH data of subframe 0 and 1 simultaneously in subframe 5.
UE is in subframe 5 while the PDSCH data progress HARQ responses to subframe 0 and 1, UE
The HARQ-ACK bit numbers that can calculate needs to send determine the PUCCH format used, i.e., each small
The HARQ-ACK bit numbers in area are 2 × 2=4, and LAASCell c and LAA SCell 2 cells of d are total
Bit number be 8.By table 1, UE can use the PUCCH resource of form 3.UE
PUCCH transmissions are carried out from the resource of PUCCH format 3 of base station configuration.Wherein, the subframe that UE is sent
The HARQ information of 0 and 1 PDSCH data, specifically refers to Fig. 4.
As shown in figure 4, in subframe 5 in LAA SCell c HARQ response messages, (subframe 0,
TB1) represented respectively to LAA SCell c subframe 0 with solid box corresponding to (subframe 0, TB2)
TB1 and TB2 HARQ response messages；Corresponding to (subframe 1, TB1) and (subframe 1, TB2)
Solid box represents the TB1 and TB2 of the subframe 1 to LAA SCell c HARQ response messages respectively；
In subframe 5 in LAA SCell d HARQ response messages, (subframe 0, TB1) and (subframe 0,
TB2 solid box corresponding to) represents to the TB1 and TB2 of LAASCell d descending sub frame 0 respectively
HARQ response messages；Solid box corresponding to (subframe 1, TB1) and (subframe 1, TB2) represents respectively
To the TB1 and TB2 of LAA SCell d subframe 1 HARQ response messages.
It is to be herein pointed out PUCCH resources of the UE in subframe n+N+m will at least two subframes
Downlink data HARQ feedback of the information to base station when, base station then can be according in corresponding PUCCH
Received in resource, and determine whether UE is properly received the downlink data of subframe 0 and subframe 1.
A kind of structure of user equipment in Fig. 5 embodiment of the present invention.Fig. 5 is referred to, in specific implementation,
A kind of user equipment 500 in the embodiment of the present invention can include receiving unit 501 and HARQ response lists
Member 502, wherein：
Receiving unit 501, the downlink data sent suitable for receiving base station in subframe n PDSCH；
HARQ response units 502, subframe n+N PUCCH resource is adapted in use to base station feedback institute
The HARQ information of downlink data is stated, N is the integer more than or equal to 1；When it is determined that the son can not be used
During the HARQ information of downlink data described in frame n+N PUCCH resource to base station feedback, subframe is used
The HARQ information of downlink data described in the PUCCH resource of subframe after n+N to the base station feedback.
In specific implementation, the HARQ response units 502, it is further adapted for son after subframe n+N
When the PUCCH resource of frame needs to feed back the HARQ information of the downlink data of one or more subframes, meter
Calculate the bit number summation of the HARQ information for the downlink data for obtaining one or more of subframes；It is determined that with
PUCCH format corresponding to the bit number summation being calculated；From the subframe after subframe n+N
PUCCH resource corresponding to PUCCH format determined by being chosen in PUCCH resource, generation described one
The HARQ information HARQ of individual or multiple downlink data is simultaneously sent to the base station；Wherein, giving birth to
Into it is described corresponding to PUCCH format HARQ information in, one or more of downlink datas
HARQ information arranged according to default order.
Alternatively, the default order includes：For the HARQ of the downlink data of the subframe of different districts
Information, arranged according to the incremental order of cell index；For the HARQ of the downlink data of same cell
Information, arranged according to the incremental order of the subframe sequence number of corresponding downlink data；For supporting 2 transmission
The HARQ information of the downlink data of the same subframe of the same cell of block, then be incremented by according to transmission block sequence number
Order arrangement.
In an embodiment of the present invention, the user equipment 500 also includes response control unit 503, wherein：
Response control unit 503, reach default delay transmission time threshold still without base described in normal direction suitable for working as
During the HARQ information for feeding back the downlink data of standing, then not to downlink data described in base station feedback
HARQ information.
In an embodiment of the present invention, the PUCCH resource of the subframe after the subframe n+N is by base station
Configured beforehand through RRC signaling.
In an embodiment of the present invention, the PUCCH resource of the subframe after the subframe n+N includes：
The PUCCH resource of subframe after the subframe n+N includes：1 is used for form 1a or form 1b
PUCCH resource, 4 be used for Channel assignment form 1b PUCCH resources and 1 use
In the PUCCH resource of form 3.
Above-mentioned scheme, subframe n+N can not be used to send the HARQ for downlink data in user equipment
During information, by using subsequent subframe PUCCH resource, user equipment can be corresponding to base station feedback in time
HARQ information, so as to be adjusted correspondingly to the downlink data of transmission, so as to be lifted
The quality of downlink data transmission.
One of ordinary skill in the art will appreciate that all or part of step in the various methods of above-described embodiment
Suddenly it is that by program the hardware of correlation can be instructed to complete, the program can be stored in a computer can
Read in storage medium, storage medium can include：ROM, RAM, disk or CD etc..
Although present disclosure is as above, the present invention is not limited to this.Any those skilled in the art,
Without departing from the spirit and scope of the present invention, can make various changes or modifications, therefore the guarantor of the present invention
Shield scope should be defined by claim limited range.
Claims (12)
- A kind of 1. HARQ feedback method of downlink data, it is characterised in that including：Receive the downlink data that base station is sent in subframe n PDSCH；Use the HARQ information of downlink data described in subframe n+N PUCCH resource to base station feedback, N For the integer more than or equal to 1；When it is determined that downlink data described in the PUCCH resource to base station feedback of the subframe n+N can not be used During HARQ information, using the PUCCH resource of the subframe after subframe n+N to the base station feedback The HARQ information of the downlink data.
- 2. the HARQ feedback method of downlink data according to claim 1, it is characterised in that when in son When subframe after frame n+N needs to feed back the HARQ information of the downlink data of one or more subframes, Also include：The bit number summation of the HARQ information of the downlink data of one or more of subframes is calculated；It is determined that PUCCH format corresponding with the bit number summation being calculated；PUCCH format determined by being chosen from the PUCCH resource of the subframe after subframe n+N is corresponding PUCCH resource, the HARQ information for generating the downlink data of one or more of subframes is concurrent Deliver to the base station；Wherein, in the HARQ information of the corresponding PUCCH format generated In, the HARQ information of the downlink data of one or more of subframes arranges according to default order.
- 3. the HARQ feedback method of downlink data according to claim 2, it is characterised in that described pre- If order include：For the HARQ information of the downlink data of the subframe of different districts, according to the incremental order of cell index Arrangement；For the HARQ information of the downlink data of same cell, according to the subframe sequence of corresponding downlink data The arrangement of number incremental order；For support 2 transmission blocks same cell same subframe downlink data HARQ information, then Arranged according to the incremental order of transmission block sequence number.
- 4. the HARQ feedback method of the downlink data according to claim any one of 1-3, it is characterised in that Also include：Time threshold is sent still without downlink data described in base station feedback described in normal direction when reaching default delay During HARQ information, then not to the HARQ information of downlink data described in base station feedback.
- 5. the HARQ feedback method of the downlink data according to claim any one of 1-3, it is characterised in that The PUCCH resource of subframe after the subframe n+N is configured by base station beforehand through RRC signaling.
- 6. the HARQ feedback method of downlink data according to claim 5, it is characterised in that the son The PUCCH resource of subframe after frame n+N includes：1 for form 1a's or form 1b PUCCH resource, 4 PUCCH resources and 1 use for being used for the form 1b with Channel assignment In the PUCCH resource of form 3.
- A kind of 7. user equipment, it is characterised in that including：Receiving unit, the downlink data sent suitable for receiving base station in subframe n PDSCH；HARQ response units, it is adapted in use to descending described in subframe n+N PUCCH resource to base station feedback The HARQ information of data, N are the integer more than or equal to 1；When it is determined that the subframe can not be used During the HARQ information of downlink data described in n+N PUCCH resource to base station feedback, subframe is used The HARQ letters of downlink data described in the PUCCH resource of subframe after n+N to the base station feedback Breath.
- 8. user equipment according to claim 7, it is characterised in that the HARQ response units, also PUCCH resource suitable for the subframe when the subframe n+N after needs to feed back under one or more subframes During the HARQ information of row data, the downlink data of one or more of subframes is calculated The bit number summation of HARQ information；It is determined that PUCCH corresponding with the bit number summation being calculated Form；PUCCH lattice determined by being chosen from the PUCCH resource of the subframe after subframe n+N PUCCH resource corresponding to formula, generate the HARQ information of one or more of downlink datas HARQ is simultaneously sent to the base station；Wherein, in the corresponding PUCCH format generated In HARQ information, the HARQ information of one or more of downlink datas is according to default suitable Sequence arranges.
- 9. user equipment according to claim 8, it is characterised in that the default order includes：For the HARQ information of the downlink data of the subframe of different districts, according to the incremental order of cell index Arrangement；For the HARQ information of the downlink data of same cell, according to the subframe sequence of corresponding downlink data The arrangement of number incremental order；For support 2 transmission blocks same cell same subframe downlink data HARQ information, then Arranged according to the incremental order of transmission block sequence number.
- 10. according to the user equipment described in claim any one of 7-9, it is characterised in that also include：Response control unit, suitable for anti-still without base station described in normal direction when reaching default delay transmission time threshold When presenting the HARQ information of the downlink data, then not to the HARQ of downlink data described in base station feedback Information.
- 11. according to the user equipment described in claim any one of 7-9, it is characterised in that the subframe n+N it The PUCCH resource of subframe afterwards is configured by base station beforehand through RRC signaling.
- 12. user equipment according to claim 11, it is characterised in that the son after the subframe n+N The PUCCH resource of frame includes：The PUCCH resource of subframe after the subframe n+N includes： 1 for form 1a or form 1b PUCCH resource, 4 be used for Channel assignment form 1b PUCCH resource and 1 PUCCH resource for being used for form 3.
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| CN110830172A (en) * | 2018-08-08 | 2020-02-21 | 展讯通信（上海）有限公司 | Indication and sending method and device for HARQ feedback of unlicensed frequency band, storage medium, base station and terminal |
| CN110913478A (en) * | 2018-09-15 | 2020-03-24 | 华为技术有限公司 | Information sending and receiving method and communication device |
| CN111262663A (en) * | 2019-04-30 | 2020-06-09 | 维沃移动通信有限公司 | Feedback message sending method and terminal equipment |
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| CN107566097B (en) | 2020-12-25 |
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