CN105933100B - HARQ feedback method and device, base station and terminal - Google Patents
HARQ feedback method and device, base station and terminal Download PDFInfo
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- CN105933100B CN105933100B CN201610497072.0A CN201610497072A CN105933100B CN 105933100 B CN105933100 B CN 105933100B CN 201610497072 A CN201610497072 A CN 201610497072A CN 105933100 B CN105933100 B CN 105933100B
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L5/00—Arrangements affording multiple use of the transmission path
- H04L5/003—Arrangements for allocating sub-channels of the transmission path
- H04L5/0053—Allocation of signaling, i.e. of overhead other than pilot signals
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- H—ELECTRICITY
- H04—ELECTRIC COMMUNICATION TECHNIQUE
- H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
- H04L1/00—Arrangements for detecting or preventing errors in the information received
- H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
- H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
- H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
- H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
Abstract
The invention proposes a kind of HARQ feedback method, HARQ feedback device, base station and terminals, wherein, the HARQ feedback method includes: that the HARQ feedback timing of the TDD system using sTTI is determined according to the HARQ feedback timing of the TDD system using legacy TTI, wherein, sTTI is that legacy TTI is divided into the TTI of P shorter durations and is formed, and P is the integer more than or equal to 2；HARQ feedback is carried out to the data received according to the HARQ feedback timing of the determining TDD system using sTTI.According to the technical solution of the present invention, HARQ ACK or NACK using sTTI be can solve and feed back timing Design problem.
Description
Technical field
The present invention relates to fields of communication technology, configure in particular to a kind of HARQ feedback method, a kind of HARQ feedback
Device, a kind of base station and a kind of terminal.
Background technique
Currently, with the development of mobile internet, having emerged the applied business for largely meeting various specific functions.Wherein
Some business are lower to data delay requirement, such as receiving and dispatching mail, downloading film etc.；But in addition there are some business to data delay
There are a strict requirements, such as network on-line game, rush to purchase, rob red packet etc., this kind of business is usually required the time delay of user data
It is short as far as possible.In LTE (Long Term Evolution, long term evolution) system, Transmission Time Interval (TTI,
Transmission Time Interval) it is the important indicator for influencing user data delay.The biography that current LTE system uses
Defeated time interval is 1ms (hereinafter referred to as legacy TTI, traditional TTI), i.e. the every 1ms of transmitting terminal sends a data block, is received
It end can one data block of every 1ms reception.
In 3GPP (3rd Generation Partnership Project, third generation partner program) RAN
To the TTI for using shorter duration in LTE system in (Radio Access Network, wireless access network) #69 plenary session
(short TTI, hereinafter the project for sTTI) is set up the project, and research uses the feasibility of sTTI and possible beneficial
Effect.The reduction for having studied TTI duration for having some documents such as R1-160942, R1-160930 quantitative at present is to LTE data
The influence of time delay, analysis shows that, using sTTI be not merely base station, terminal Transmission Time Interval shorten, correspondingly, with this
The corresponding data processing time of Transmission Time Interval can also decrease, such as data code modulation and data demodulation time
It will be reduced with the reduction of data block size.In the LTE system of later release it is possible that legacy TTI with
The case where two kinds of Transmission Time Intervals of sTTI coexist, that is, in the same cell, exist simultaneously it is existing using legacy TTI into
The terminal of row data transmit-receive also has the terminal that data transmit-receive is carried out using sTTI.In this case, it will usually it is required that legacy
The duration of TTI is the integral multiple of sTTI duration, to avoid in TDD (Time Division Duplexing, time division duplex) system
In uplink and downlink interlock interference problem.
In the TDD system using legacy TTI, HARQ (Hybrid Automatic Repeat Request, mixing
Automatic repeat request) feedback timing is has determined via standard, that is, it is directed to the data that send in subframe n, corresponding HARQ
ACK (Acknowledgement confirms response) or NACK (Negative Acknowledgement, negative response) feedback letter
Breath should be issued in subframe m.Standard has arranged the numerical value of n, m in the case of different TDD configuration (frame structure) in detail.
By taking the downlink HARQ feedback timing of TDD configuration 2 as an example, as shown in Figure 1, the downlink subframe 4/ in previous frame
HARQ ACK or NACK feedback information is issued on the sub-frame of uplink 2 of the data issued on 5/6/8 accordingly in the current frame, upper
The data sent on downlink subframe 9 in one frame and the downlink subframe in present frame 0/1/3 are accordingly in the uplink of present frame
HARQ ACK or NACK feedback information is issued in subframe 7.And when for the downlink HARQ feedback of other TDD configuration
Sequence and uplink HARQ feedback timing are also described in a standard.
In the TDD system using sTTI, frame/subframe structure signal of TDD is as shown in Figure 2.Still with TDD
Configuration2 is.Legacy TTI is aligned with the sub-frame boundary of sTTI, and a legacy TTI includes integer sTTI,
It is so that a legacy TTI includes 2 sTTI as an example in Fig. 2.When not yet determining at present using sTTI, it is anti-how to design HARQ
Present timing.
Therefore a kind of HARQ ACK or NACK using sTTI is needed to feed back timing Design scheme.
Summary of the invention
The present invention is based on the above problems, and it is anti-to propose a kind of HARQ according to the TDD system using legacy TTI
It presents timing and determines the design scheme for using the HARQ feedback timing of TDD system of sTTI, to solve using sTTI
HARQ ACK or NACK feed back timing Design problem.
In view of this, first aspect of the present invention it is proposed a kind of HARQ feedback method, comprising: according to using legacy
The HARQ feedback timing of the TDD system of TTI determines the HARQ feedback timing of the TDD system using sTTI, wherein sTTI be by
Legacy TTI is divided into the TTI of P shorter durations and is formed, and P is the integer more than or equal to 2；According to determining institute
The data that ordered pair is sent when stating the HARQ feedback using the TDD system of sTTI carry out HARQ feedback.
It in the technical scheme, can be anti-according to the HARQ of the defined TDD system using legacy TTI of standard
The HARQ feedback timing for the TDD system that timing is determined using sTTI is presented, so that the data to transmission carry out HARQ feedback, to solve
HARQ ACK or NACK using sTTI feed back timing Design problem, wherein the duration of a legacy TTI is
P times of the duration of sTTI, i.e. a legacy TTI include P sTTI, and P is the integer more than or equal to 2, for example, when P is 2
When, legacy TTI includes 2 sTTI, then the when a length of 0.5ms of sTTI.
In the above-mentioned technical solutions, it is preferable that the HARQ feedback according to the determining TDD system using sTTI
The step of timing carries out HARQ feedback to the data received, specifically includes: in the TDD system using sTTI, for
The data sent in the P sTTI subframe corresponding to legacy TTI subframe n, in P corresponding to legacy TTI subframe m
HARQ ACK or NACK feedback information is issued in sTTI subframe, wherein the legacy TTI subframe n and legacy TTI subframe
The corresponding relationship of m is determined according to the HARQ feedback timing of the TDD system using legacy TTI, and n and m are 0~9
Integer.
When in the technical scheme, according to the HARQ feedback of the defined TDD system using legacy TTI of standard
A kind of design scheme of the HARQ feedback timing for the TDD system for using sTTI that sequence determines can be with are as follows: is using legacy TTI
TDD system HARQ feedback timing in provide, for the data sent on legacy TTI subframe n accordingly in legacy
HARQ ACK or NACK feedback information is issued on TTI subframe m, then correspondingly when using the HARQ feedback of the TDD system of sTTI
It provides in sequence, for the data sent in the P sTTI subframe of legacy TTI subframe n are being corresponded to, is corresponding to
HARQACK or NACK feedback information is issued in the P sTTI subframe of legacy TTI subframe m, wherein n and m indicates the mark of subframe
Number, the value of the two takes 0~9 integer, when issuing HARQ ACK feedback information, indicates that the receiving end of data receives correct and returns
The confirmation response returned, can send new data at this time, and when issuing HARQ NACK feedback information, indicate the reception of data
End receives mistake and the negative response of return, needs to retransmit the data of last time transmission at this time.
In the above-mentioned technical solutions, it is preferable that the HARQ feedback according to the determining TDD system using sTTI
The step of timing carries out HARQ feedback to the data received, specifically includes: in the TDD system using sTTI, for
The data sent in the k × P sTTI subframe corresponding to legacy TTI subframe n1, n2 ..., nk are corresponding to legacy
HARQ ACK or NACK feedback information is issued in the P sTTI subframe of TTI subframe m, wherein the legacy TTI subframe n1,
The corresponding relationship of n2 ..., nk and legacy TTI subframe m are anti-according to the HARQ of the TDD system using legacy TTI
Present what timing determined, n1, n2 ..., the integer that nk and m are 0~9, k is the integer more than or equal to 2.
When in the technical scheme, according to the HARQ feedback of the defined TDD system using legacy TTI of standard
Another design scheme of the HARQ feedback timing for the TDD system for using sTTI that sequence determines can be with are as follows: is using legacy
It is provided in the HARQ feedback timing of the TDD system of TTI, it is corresponding for the data sent on legacy TTI subframe n1 ..., nk
Ground issues HARQ ACK or NACK feedback information on legacy TTI subframe m, then correspondingly in the TDD system using sTTI
It is provided in HARQ feedback timing, for sending in the k × P sTTI subframe of legacy TTI subframe n1 ..., nk corresponding to
Data, corresponding to legacy TTI subframe m P sTTI subframe on sending HARQ ACK or NACK feedback information, wherein
Legacy TTI subframe n1 ..., nk are arranged according to chronological order, n1, n2 ..., and nk and m indicate the label of subframe, they
Value takes 0~9 integer, and k is the integer more than or equal to 2, specifically, when issuing HARQ ACK feedback information, indicates data
Receiving end receive confirmation response that is correct and returning, can send new data at this time, and when issuing HARQ NACK feedback letter
When breath, indicates the negative response that the receiving end of data receives mistake and returns, need to retransmit the data of last time transmission at this time.
In any of the above-described technical solution, it is preferable that it is described in the TDD system using sTTI, in correspondence
In the data sent in the k × P sTTI subframe of legacy TTI subframe n1, n2 ..., nk, corresponding to legacy TTI
HARQ ACK or NACK feedback information is issued in the P sTTI subframe of frame m, is specifically included: by the k × P sTTI subframe point
At P sTTI subframe groups to be feedback, in each sTTI subframe in the P sTTI subframe corresponding to legacy TTI subframe m
Issue HARQ ACK or the NACK feedback information for sTTI subframe group to be feedback described in every group.
In the technical scheme, further, according to the defined TDD system using legacy TTI of standard
HARQ feedback timing determine the TDD system using sTTI HARQ feedback timing another design scheme in, can by k ×
P sTTI subframe is divided into P sTTI subframe groups to be feedback, i.e., includes k sTTI subframe in each sTTI subframe group to be feedback, then
After grouping, needle is issued correspondingly in each sTTI subframe in the P sTTI subframe corresponding to legacy TTI subframe m
HARQ ACK or NACK feedback information to the data sent in every group of sTTI subframe group to be feedback, in this way, P sTTI can be with
HARQ ACK or the NACK feedback for carrying out P group sTTI subframe group to be feedback complete institute's HARQ ACK or NACK feedback in need
Operation.
The second aspect of the present invention proposes a kind of HARQ feedback device, comprising: determining module, for according to use
The HARQ feedback timing of the TDD system of legacy TTI determines the HARQ feedback timing of the TDD system using sTTI, wherein
STTI is that legacy TTI is divided into the TTI of P shorter durations and is formed, and P is the integer more than or equal to 2；Feedback
Module, the number that ordered pair is sent when the HARQ feedback using the TDD system of sTTI for being determined according to the determining module
According to progress HARQ feedback.
It in the technical scheme, can be anti-according to the HARQ of the defined TDD system using legacy TTI of standard
The HARQ feedback timing for the TDD system that timing is determined using sTTI is presented, so that the data to transmission carry out HARQ feedback, to solve
HARQ ACK or NACK using sTTI feed back timing Design problem, wherein the duration of a legacy TTI is
P times of the duration of sTTI, i.e. a legacy TTI include P sTTI, and P is the integer more than or equal to 2, for example, when P is 2
When, legacy TTI includes 2 sTTI, then the when a length of 0.5ms of sTTI.
In the above-mentioned technical solutions, it is preferable that the feedback module is specifically used for: in the TDD system using sTTI
In, for the data sent in the P sTTI subframe corresponding to legacy TTI subframe n, corresponding to legacy TTI
HARQ ACK or NACK feedback information is issued in the P sTTI subframe of frame m, wherein legacy TTI the subframe n and legacy
The corresponding relationship of TTI subframe m is determined according to the HARQ feedback timing of the TDD system using legacy TTI, n and m
For 0~9 integer.
When in the technical scheme, according to the HARQ feedback of the defined TDD system using legacy TTI of standard
A kind of design scheme of the HARQ feedback timing for the TDD system using sTTI that sequence determines are as follows: in the TDD using legacy TTI
It is provided in the HARQ feedback timing of system, for the data sent on legacy TTI subframe n accordingly in legacy TTI
HARQ ACK or NACK feedback information is issued on subframe m, then correspondingly in the HARQ feedback timing using the TDD system of sTTI
Regulation is corresponding to legacy for the data sent in the P sTTI subframe of legacy TTI subframe n are being corresponded to
HARQ ACK or NACK feedback information is issued in the P sTTI subframe of TTI subframe m, wherein the label of n and m expression subframe, two
The value of person takes 0~9 integer, and when issuing HARQ ACK feedback information, it is correct and return to indicate that the receiving end of data receives
Confirm response, new data can be sent at this time, and when issuing HARQ NACK feedback information, indicate the reception termination of data
The negative response receiving mistake and returning needs to retransmit at this time the data of last time transmission.
In the above-mentioned technical solutions, it is preferable that the feedback module is specifically used for: in the TDD system using sTTI
In, for the data sent in the k × P sTTI subframe corresponding to legacy TTI subframe n1, n2 ..., nk, corresponding to
HARQ ACK or NACK feedback information is issued in the P sTTI subframe of legacy TTI subframe m, wherein the legacy TTI
The corresponding relationship of subframe n1, n2 ..., nk and legacy TTI subframe m is according to the TDD system using legacy TTI
What HARQ feedback timing determined, n1, n2 ..., the integer that nk and m are 0~9, k is the integer more than or equal to 2.
When in the technical scheme, according to the HARQ feedback of the defined TDD system using legacy TTI of standard
Another design scheme of the HARQ feedback timing for the TDD system for using sTTI that sequence determines can be with are as follows: is using legacy
It is provided in the HARQ feedback timing of the TDD system of TTI, it is corresponding for the data sent on legacy TTI subframe n1 ..., nk
Ground issues HARQ ACK or NACK feedback information on legacy TTI subframe m, then correspondingly in the TDD system using sTTI
It is provided in HARQ feedback timing, for sending in the k × P sTTI subframe of legacy TTI subframe n1 ..., nk corresponding to
Data, corresponding to legacy TTI subframe m P sTTI subframe on sending HARQ ACK or NACK feedback information, wherein
N1, n2 ..., nk and m indicate the label of subframe, their value takes 0~9 integer, and k is the integer more than or equal to 2, specifically,
When issuing HARQ ACK feedback information, indicates that the receiving end of data receives confirmation response that is correct and returning, can send out at this time
New data are sent, and when issuing HARQ NACK feedback information, the negative for indicating that the receiving end of data receives mistake and returns is answered
It answers, needs to retransmit the data of last time transmission at this time.
In any of the above-described technical solution, it is preferable that the feedback module is specifically used for: by the k × P sTTI subframe
It is divided into P sTTI subframe groups to be feedback, each sTTI subframe in the P sTTI subframe corresponding to legacy TTI subframe m
Upper HARQ ACK or the NACK feedback information issued for sTTI subframe group to be feedback described in every group.
In the technical scheme, further, according to the defined TDD system using legacy TTI of standard
HARQ feedback timing determine the TDD system using sTTI HARQ feedback timing another design scheme in, can by k ×
P sTTI subframe is divided into P sTTI subframe groups to be feedback, i.e., includes k sTTI subframe in each sTTI subframe group to be feedback, then
After grouping, needle is issued correspondingly in each sTTI subframe in the P sTTI subframe corresponding to legacy TTI subframe m
HARQ ACK or NACK feedback information to the data sent in every group of sTTI subframe group to be feedback, in this way, P sTTI can be with
HARQ ACK or the NACK feedback for carrying out P group sTTI subframe group to be feedback complete institute's HARQ ACK or NACK feedback in need
Operation.
The third aspect of the present invention proposes a kind of base station, comprising: the HARQ as described in any one of above-mentioned technical proposal
Feedback device, therefore, the base station have all beneficial to effect of the HARQ feedback device as described in any one of above-mentioned technical proposal
Fruit, details are not described herein.
The fourth aspect of the present invention proposes a kind of terminal, comprising: the HARQ as described in any one of above-mentioned technical proposal
Feedback device, therefore, the terminal have all beneficial to effect of the HARQ feedback device as described in any one of above-mentioned technical proposal
Fruit, details are not described herein.
According to the technical solution of the present invention, HARQ ACK or NACK using sTTI be can solve and feed back timing
Design problem.
Detailed description of the invention
Fig. 1 shows a kind of HARQ feedback time diagram of the TDD system using TTI in the related technology；
Fig. 2 shows one of the relevant technologies using frame/subframe structure schematic diagram of the TDD system of sTTI；
Fig. 3 shows the flow diagram of the HARQ feedback method of embodiment according to the present invention；
Fig. 4 shows a kind of HARQ feedback timing signal of the TDD system using sTTI of embodiment according to the present invention
Figure；
Another HARQ feedback timing that Fig. 5 shows the TDD system using sTTI of embodiment according to the present invention is shown
It is intended to；
Fig. 6 shows the schematic block diagram of the HARQ feedback device of embodiment according to the present invention；
Fig. 7 shows the schematic block diagram of the base station of embodiment according to the present invention；
Fig. 8 shows the schematic block diagram of the terminal of embodiment according to the present invention.
Specific embodiment
It is with reference to the accompanying drawing and specific real in order to be more clearly understood that the above objects, features and advantages of the present invention
Applying mode, the present invention is further described in detail.It should be noted that in the absence of conflict, the implementation of the application
Feature in example and embodiment can be combined with each other.
In the following description, numerous specific details are set forth in order to facilitate a full understanding of the present invention, still, the present invention may be used also
To be implemented using other than the one described here other modes, therefore, protection scope of the present invention is not by described below
Specific embodiment limitation.
Fig. 3 shows the flow diagram of the HARQ feedback method of embodiment according to the present invention.
As shown in figure 3, the HARQ feedback method of embodiment according to the present invention, comprising the following steps:
Step 302, the TDD system for using sTTI is determined according to the HARQ feedback timing of the TDD system using legacy TTI
The HARQ feedback timing of system, wherein sTTI is that legacy TTI is divided into the TTI of P shorter durations and is formed, and P is big
In or equal to 2 integer.
Step 304, it is carried out according to the data that ordered pair when the determining HARQ feedback using the TDD system of sTTI is sent
HARQ feedback.
It in the technical scheme, can be anti-according to the HARQ of the defined TDD system using legacy TTI of standard
The HARQ feedback timing for the TDD system that timing is determined using sTTI is presented, so that the data to transmission carry out HARQ feedback, to solve
HARQ ACK or NACK using sTTI feed back timing Design problem, wherein the duration of a legacy TTI is
P times of the duration of sTTI, i.e. a legacy TTI include P sTTI, and P is the integer more than or equal to 2, for example, such as Fig. 2 institute
Show, when P is 2, legacy TTI includes 2 sTTI, then the when a length of 0.5ms of sTTI.
Above-mentioned steps 304 can specifically be realized by following two embodiment.
Embodiment one:
In the TDD system using sTTI, in the P sTTI subframe corresponding to legacy TTI subframe n
The data of transmission issue HARQ ACK or NACK feedback information in the P sTTI subframe corresponding to legacy TTI subframe m,
Wherein, the corresponding relationship of the legacy TTI subframe n and legacy TTI subframe m is according to described using legacy TTI
What the HARQ feedback timing of TDD system determined, the integer that n and m are 0~9.
When in the technical scheme, according to the HARQ feedback of the defined TDD system using legacy TTI of standard
A kind of design scheme of the HARQ feedback timing for the TDD system for using sTTI that sequence determines can be with are as follows: is using legacy TTI
TDD system HARQ feedback timing in provide, for the data sent on legacy TTI subframe n accordingly in legacy
HARQ ACK or NACK feedback information is issued on TTI subframe m, then correspondingly when using the HARQ feedback of the TDD system of sTTI
It provides in sequence, for the data sent in the P sTTI subframe of legacy TTI subframe n are being corresponded to, is corresponding to
HARQACK or NACK feedback information is issued in the P sTTI subframe of legacy TTI subframe m, wherein n and m indicates the mark of subframe
Number, the value of the two takes 0~9 integer, when issuing HARQ ACK feedback information, indicates that the receiving end of data receives correct and returns
The confirmation response returned, can send new data at this time, and when issuing HARQ NACK feedback information, indicate the reception of data
End receives mistake and the negative response of return, needs to retransmit the data of last time transmission at this time.
Embodiment two:
In the TDD system using sTTI, in the k × P for corresponding to legacy TTI subframe n1, n2 ..., nk
The data sent in a sTTI subframe, corresponding to legacy TTI subframe m P sTTI subframe on sending HARQ ACK or
NACK feedback information, wherein the corresponding relationship of legacy TTI subframe n1, n2 ..., nk and legacy TTI the subframe m is
Determined according to the HARQ feedback timing of the TDD system using legacy TTI, n1, n2 ..., nk and m be 0~9 it is whole
Number, k are the integer more than or equal to 2.
When in the technical scheme, according to the HARQ feedback of the defined TDD system using legacy TTI of standard
Another design scheme of the HARQ feedback timing for the TDD system for using sTTI that sequence determines can be with are as follows: is using legacy
It is provided in the HARQ feedback timing of the TDD system of TTI, it is corresponding for the data sent on legacy TTI subframe n1 ..., nk
Ground issues HARQ ACK or NACK feedback information on legacy TTI subframe m, then correspondingly in the TDD system using sTTI
It is provided in HARQ feedback timing, for sending in the k × P sTTI subframe of legacy TTI subframe n1 ..., nk corresponding to
Data, corresponding to legacy TTI subframe m P sTTI subframe on sending HARQ ACK or NACK feedback information, wherein
Legacy TTI subframe n1 ..., nk are arranged according to chronological order, n1, n2 ..., and nk and m indicate the label of subframe, they
Value takes 0~9 integer, and k is the integer more than or equal to 2, specifically, when issuing HARQ ACK feedback information, indicates data
Receiving end receive confirmation response that is correct and returning, can send new data at this time, and when issuing HARQ NACK feedback letter
When breath, indicates the negative response that the receiving end of data receives mistake and returns, need to retransmit the data of last time transmission at this time.
Further, above-described embodiment two can specifically be accomplished by the following way: by the k × P sTTI subframe point
At P sTTI subframe groups to be feedback, in each sTTI subframe in the P sTTI subframe corresponding to legacy TTI subframe m
Issue HARQ ACK or the NACK feedback information for sTTI subframe group to be feedback described in every group.
In the technical scheme, further, according to the defined TDD system using legacy TTI of standard
HARQ feedback timing determine the TDD system using sTTI HARQ feedback timing another design scheme in, can by k ×
P sTTI subframe is divided into P sTTI subframe groups to be feedback, i.e., includes k sTTI subframe in each sTTI subframe group to be feedback, then
After grouping, needle is issued correspondingly in each sTTI subframe in the P sTTI subframe corresponding to legacy TTI subframe m
HARQ ACK or NACK feedback information to the data sent in every group of sTTI subframe group to be feedback, in this way, P sTTI can be with
HARQ ACK or the NACK feedback for carrying out P group sTTI subframe group to be feedback complete institute's HARQ ACK or NACK feedback in need
Operation.
Wherein, to the mode of k × P sTTI subframe grouping can there are many, for example, one of mode can be with are as follows: according to when
Between sequencing these sTTI subframes are divided into P group sTTI subframe group to be feedback, and then can in chronological sequence sequence in correspondence
In sending HARQ ACK or NACK feedback information in the P sTTI subframe of legacy TTI subframe m；The two of mode can be with are as follows: presses
According to relative ranks grouping of each sTTI subframe in corresponding legacy TTI subframe, that is, correspond to legacy TTI subframe
The number of n1, n2 ..., the sTTI subframe of nk are answered are as follows: n1 × P, n1 × P+1 ..., n1 × P+P-1, n2 × P, and n2 × P+1 ...,
N2 × P+P-1 ..., nk × P, nk × P+1 ..., nk × P+P-1, then when being grouped, by sTTI subframe marked as n1 × P, n2 ×
P ..., sTTI subframe are divided into first group of sTTI subframe group to be feedback, n1 × P+1, n2 × P+1 ..., nk × P marked as nk × P's
+ 1 is divided into second group of sTTI subframe group to be feedback, and so on, until by sTTI subframe marked as n1 × P+P-1, n2 × P+
P-1's ..., nk × P+P-1 is divided into P group sTTI subframe group to be feedback.
The packet mode of k × P sTTI subframe is described in detail combined with specific embodiments below.
In this specific embodiment, by taking downlink the HARQ ACK or NACK of TDD configuration 2 feedback as an example, such as
Shown in Fig. 1, according to current standard, can determine in previous frame downlink subframe 4/5/6/8 in the sub-frame of uplink 2 of present frame into
Row HARQ ACK or NACK feedback, i.e. k=4, n1=4, n2=5, n3=6, n4=8, m=2.
So, using sTTI, frame/subframe structure signal of TDD as shown in Fig. 2, then with above scheme pair
The P=2 answered.
Corresponding to the sTTI of legacy TTI subframe 4/5/6/8, sTTI subframe is marked as 8/9/10/11/12/13/16/
17, then 8 sTTI subframes can be divided into 2 groups of sTTI subframe groups to be feedback.
When being grouped according to chronological order, sTTI subframe 8/9/10/11 can be divided is first group, by sTTI subframe
12/13/16/17 point is second group, and then, corresponding to the sTTI subframe of legacy TTI subframe 2, sTTI subframe is marked as 4/
5.The HARQ of the one sTTI subframe 8/9/10/11 of sTTI subframe group to be feedback of previous frame is then carried out on the sTTI of present frame 4
ACK or NACK feedback, carries out the two sTTI subframe 12/ of sTTI subframe group to be feedback of previous frame in the sTTI subframe 5 of present frame
13/16/17 HARQ ACK or NACK feedback, corresponding feedback timing according to current standard as shown in figure 4, for determining
The data sent on downlink subframe 0/1/3 in previous frame in downlink subframe 9 and present frame are in the sub-frame of uplink 7 of present frame
The case where carrying out HARQ ACK or NACK feedback, it is similar with foregoing teachings, it repeats no more.
It, can be by sTTI when being grouped according to relative ranks of each sTTI subframe in corresponding legacy TTI subframe
It is first group that subframe 8/10/12/16, which is divided, and it is second group that sTTI subframe 9/11/13/17, which is divided, then, corresponds to legacy TTI
The sTTI subframe of subframe 2, sTTI subframe is marked as 4/5.The to be feedback of previous frame is then carried out on the sTTI of present frame 4
The HARQ ACK or NACK of one sTTI subframe 8/10/12/16 of sTTI subframe group are fed back, and are carried out in the sTTI subframe 5 of present frame
The HARQ ACK or NACK of the two sTTI subframe 9/11/13/17 of sTTI subframe group to be feedback of previous frame are fed back, corresponding feedback
Timing is as shown in figure 5, for determining downlink subframe 9 in previous frame and the downlink subframe 0/ in present frame according to current standard
The data sent on 1/3 carry out the case where HARQ ACK or NACK feedback in the sub-frame of uplink 7 of present frame, with foregoing teachings class
Together, it repeats no more.
Downlink the HARQ ACK or NACK of other TDD configuration is fed back and ascending HARQ ACK or NACK is anti-
It presents similar, is not listed one by one.
Fig. 6 shows the schematic block diagram of the HARQ feedback device of embodiment according to the present invention.
As shown in fig. 6, the HARQ feedback device 600 of embodiment according to the present invention, comprising: determining module 602 and feedback
Module 604.
Wherein it is determined that module 602, for being adopted according to the HARQ feedback timing determination of the TDD system using legacy TTI
With the HARQ feedback timing of the TDD system of sTTI, wherein sTTI be legacy TTI is divided into P shorter duration TTI and
It is formed, P is the integer more than or equal to 2；Feedback module 604, for being adopted according to the determining module 602 determination
HARQ feedback is carried out with the data that ordered pair when the HARQ feedback of the TDD system of sTTI is sent.
It in the technical scheme, can be anti-according to the HARQ of the defined TDD system using legacy TTI of standard
The HARQ feedback timing for the TDD system that timing is determined using sTTI is presented, so that the data to transmission carry out HARQ feedback, to solve
HARQ ACK or NACK using sTTI feed back timing Design problem, wherein the duration of a legacy TTI is
P times of the duration of sTTI, i.e. a legacy TTI include P sTTI, and P is the integer more than or equal to 2, for example, when P is 2
When, legacy TTI includes 2 sTTI, then the when a length of 0.5ms of sTTI.
Above-mentioned feedback module 604 specifically can be used in embodiment one: in the TDD system using sTTI, for
The data sent in the P sTTI subframe corresponding to legacy TTI subframe n, in P corresponding to legacy TTI subframe m
HARQ ACK or NACK feedback information is issued in sTTI subframe, wherein the legacy TTI subframe n and legacy TTI subframe
The corresponding relationship of m is determined according to the HARQ feedback timing of the TDD system using legacy TTI, and n and m are 0~9
Integer.
When in the technical scheme, according to the HARQ feedback of the defined TDD system using legacy TTI of standard
A kind of design scheme of the HARQ feedback timing for the TDD system using sTTI that sequence determines are as follows: in the TDD using legacy TTI
It is provided in the HARQ feedback timing of system, for the data sent on legacy TTI subframe n accordingly in legacy TTI
HARQ ACK or NACK feedback information is issued on subframe m, then correspondingly in the HARQ feedback timing using the TDD system of sTTI
Regulation is corresponding to legacy for the data sent in the P sTTI subframe of legacy TTI subframe n are being corresponded to
HARQ ACK or NACK feedback information is issued in the P sTTI subframe of TTI subframe m, wherein the label of n and m expression subframe, two
The value of person takes 0~9 integer, and when issuing HARQ ACK feedback information, it is correct and return to indicate that the receiving end of data receives
Confirm response, new data can be sent at this time, and when issuing HARQ NACK feedback information, indicate the reception termination of data
The negative response receiving mistake and returning needs to retransmit at this time the data of last time transmission.
Above-mentioned feedback module 604 specifically can be used in embodiment two: in the TDD system using sTTI, for
The data sent in the k × P sTTI subframe corresponding to legacy TTI subframe n1, n2 ..., nk are corresponding to legacy
HARQ ACK or NACK feedback information is issued in the P sTTI subframe of TTI subframe m, wherein the legacy TTI subframe n1,
The corresponding relationship of n2 ..., nk and legacy TTI subframe m are anti-according to the HARQ of the TDD system using legacy TTI
Present what timing determined, n1, n2 ..., the integer that nk and m are 0~9, k is the integer more than or equal to 2.
When in the technical scheme, according to the HARQ feedback of the defined TDD system using legacy TTI of standard
Another design scheme of the HARQ feedback timing for the TDD system for using sTTI that sequence determines can be with are as follows: is using legacy
It is provided in the HARQ feedback timing of the TDD system of TTI, it is corresponding for the data sent on legacy TTI subframe n1 ..., nk
Ground issues HARQ ACK or NACK feedback information on legacy TTI subframe m, then correspondingly in the TDD system using sTTI
It is provided in HARQ feedback timing, for sending in the k × P sTTI subframe of legacy TTI subframe n1 ..., nk corresponding to
Data, corresponding to legacy TTI subframe m P sTTI subframe on sending HARQ ACK or NACK feedback information, wherein
N1, n2 ..., nk and m indicate the label of subframe, their value takes 0~9 integer, and k is the integer more than or equal to 2, specifically,
When issuing HARQ ACK feedback information, indicates that the receiving end of data receives confirmation response that is correct and returning, can send out at this time
New data are sent, and when issuing HARQ NACK feedback information, the negative for indicating that the receiving end of data receives mistake and returns is answered
It answers, needs to retransmit the data of last time transmission at this time.
In above-described embodiment two, the feedback module 604 is specifically used for: the k × P sTTI subframe is divided into P
STTI subframe group to be feedback issues needle in each sTTI subframe in the P sTTI subframe corresponding to legacy TTI subframe m
HARQ ACK or the NACK feedback information of the sTTI subframe group to be feedback described in every group.
In the technical scheme, further, according to the defined TDD system using legacy TTI of standard
HARQ feedback timing determine the TDD system using sTTI HARQ feedback timing another design scheme in, can by k ×
P sTTI subframe is divided into P sTTI subframe groups to be feedback, i.e., includes k sTTI subframe in each sTTI subframe group to be feedback, then
After grouping, needle is issued correspondingly in each sTTI subframe in the P sTTI subframe corresponding to legacy TTI subframe m
HARQ ACK or NACK feedback information to the data sent in every group of sTTI subframe group to be feedback, in this way, P sTTI can be with
HARQ ACK or the NACK feedback for carrying out P group sTTI subframe group to be feedback complete institute's HARQ ACK or NACK feedback in need
Operation.
In Fig. 6, determining module 602 and feedback module 604 can be central processing unit (Central Processing
Unit, CPU), microprocessor or digital signal processor (Digital Signal Processor, DSP).
Fig. 7 shows the schematic block diagram of the base station of embodiment according to the present invention.
As shown in fig. 7, the base station 700 of embodiment according to the present invention, comprising: as described in any one of above-mentioned technical proposal
HARQ feedback device 600, therefore, which has device for allocating resources as described in any one of above-mentioned technical proposal
600 all beneficial effects, details are not described herein.
Fig. 8 shows the schematic block diagram of the terminal of embodiment according to the present invention.
As shown in figure 8, the terminal 800 of embodiment according to the present invention, comprising: as described in any one of above-mentioned technical proposal
HARQ feedback device 600, therefore, which has device for allocating resources as described in any one of above-mentioned technical proposal
600 all beneficial effects, details are not described herein.
The technical scheme of the present invention has been explained in detail above with reference to the attached drawings, according to the technical solution of the present invention, can solve
HARQ ACK or NACK using sTTI feed back timing Design problem.
The foregoing is only a preferred embodiment of the present invention, is not intended to restrict the invention, for the skill of this field
For art personnel, the invention may be variously modified and varied.All within the spirits and principles of the present invention, made any to repair
Change, equivalent replacement, improvement etc., should all be included in the protection scope of the present invention.
Claims (6)
1. a kind of HARQ feedback method characterized by comprising
The HARQ feedback of the TDD system using sTTI is determined according to the HARQ feedback timing of the TDD system using legacy TTI
Timing, wherein sTTI is that legacy TTI is divided into the TTI of P shorter durations and is formed, and P is more than or equal to 2
Integer；
HARQ feedback is carried out according to the data that ordered pair when the determining HARQ feedback using the TDD system of sTTI is sent；
It is anti-that the HARQ feedback timing according to the determining TDD system using sTTI carries out HARQ to the data received
The step of feedback, specifically includes:
In the TDD system using sTTI, sent in the P sTTI subframe corresponding to legacy TTI subframe n
Data, corresponding to legacy TTI subframe m P sTTI subframe on sending HARQ ACK or NACK feedback information, wherein
The corresponding relationship of the legacy TTI subframe n and legacy TTI subframe m is according to the TDD system using legacy TTI
What the HARQ feedback timing of system determined, the integer that n and m are 0~9；Or
In the TDD system using sTTI, in k × P corresponding to legacy TTI subframe n1, n2 ..., nk
The data sent in sTTI subframe issue HARQ ACK or NACK in the P sTTI subframe corresponding to legacy TTI subframe m
Feedback information, wherein the corresponding relationship of legacy TTI subframe n1, n2 ..., nk and legacy TTI the subframe m is basis
What the HARQ feedback timing of the TDD system using legacy TTI determined, n1, n2 ..., the integer that nk and m are 0~9, k is
Integer more than or equal to 2.
2. HARQ feedback method according to claim 1, which is characterized in that described in the TDD system using sTTI
In, for the data sent in the k × P sTTI subframe corresponding to legacy TTI subframe n1, n2 ..., nk, corresponding to
HARQ ACK or NACK feedback information is issued in the P sTTI subframe of legacy TTI subframe m, is specifically included:
K × P sTTI the subframe is divided into P sTTI subframe groups to be feedback, in P corresponding to legacy TTI subframe m
Sending is anti-for the HARQ ACK or NACK of sTTI subframe group to be feedback described in every group in each sTTI subframe in sTTI subframe
Feedforward information.
3. a kind of HARQ feedback device characterized by comprising
Determining module determines the TDD system for using sTTI for the HARQ feedback timing according to the TDD system using legacy TTI
The HARQ feedback timing of system, wherein sTTI is that legacy TTI is divided into the TTI of P shorter durations and is formed, and P is big
In or equal to 2 integer；
Feedback module, the ordered pair when HARQ feedback using the TDD system of sTTI for being determined according to the determining module
The data of transmission carry out HARQ feedback；
The feedback module is specifically used for:
In the TDD system using sTTI, sent in the P sTTI subframe corresponding to legacy TTI subframe n
Data, corresponding to legacy TTI subframe m P sTTI subframe on sending HARQ ACK or NACK feedback information, wherein
The corresponding relationship of the legacy TTI subframe n and legacy TTI subframe m is according to the TDD system using legacy TTI
What the HARQ feedback timing of system determined, the integer that n and m are 0~9；Or
In the TDD system using sTTI, in k × P corresponding to legacy TTI subframe n1, n2 ..., nk
The data sent in sTTI subframe issue HARQ ACK or NACK in the P sTTI subframe corresponding to legacy TTI subframe m
Feedback information, wherein the corresponding relationship of legacy TTI subframe n1, n2 ..., nk and legacy TTI the subframe m is basis
What the HARQ feedback timing of the TDD system using legacy TTI determined, n1, n2 ..., the integer that nk and m are 0~9, k is
Integer more than or equal to 2.
4. HARQ feedback device according to claim 3, which is characterized in that the feedback module is specifically used for:
K × P sTTI the subframe is divided into P sTTI subframe groups to be feedback, in P corresponding to legacy TTI subframe m
Sending is anti-for the HARQ ACK or NACK of sTTI subframe group to be feedback described in every group in each sTTI subframe in sTTI subframe
Feedforward information.
5. a kind of base station characterized by comprising HARQ feedback device as described in claim 3 or 4.
6. a kind of terminal characterized by comprising HARQ feedback device as described in claim 3 or 4.
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| JP6929945B2 (en) * | 2017-01-15 | 2021-09-01 | エルジー エレクトロニクス インコーポレイティド | A method of transmitting a HARQ-ACK signal in a wireless communication system and a device for that purpose. |
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