CN105933100A - HARQ feedback method, HARQ feedback device, base station and terminal - Google Patents
HARQ feedback method, HARQ feedback device, base station and terminal Download PDFInfo
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- CN105933100A CN105933100A CN201610497072.0A CN201610497072A CN105933100A CN 105933100 A CN105933100 A CN 105933100A CN 201610497072 A CN201610497072 A CN 201610497072A CN 105933100 A CN105933100 A CN 105933100A
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- stti
- subframe
- legacy tti
- harq feedback
- feedback
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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 provides a HARQ feedback method, a HARQ feedback device, a base station and a terminal, wherein the HARQ feedback method comprises the following steps of: determining a HARQ feedback time sequence of a TDD system adopting a sTTI according to a HARQ feedback time sequence of a TDD system adopting a legacy TTI, wherein the sTTI is formed by dividing the legacy TTI into P TTIs having shorter duration; and P is an integer, which is greater than or equal to 2; and performing HARQ feedback of received data according to the determined HARQ feedback time sequence of the TDD system adopting the sTTI. By means of the technical scheme of the invention, the design problem of a HARQ ACK or NACK feedback time sequence when the sTTI is used can be solved.
Description
Technical field
The present invention relates to communication technical field, in particular to a kind of HARQ feedback method,
A kind of HARQ feedback configuration device, a kind of base station and a kind of terminal.
Background technology
At present, along with the development of mobile Internet, the application meeting various specific function in a large number has been emerged
Business.Some of them business is relatively low to data delay requirement, such as receiving and dispatching mail, downloads movies；But
Additionally have some business that data delay is had strict requirements, such as network on-line plays, rush to purchase, rob red
Bags etc., the time delay that this kind of business is usually required user data is the shortest.At LTE (Long Term
Evolution, Long Term Evolution) in system, Transmission Time Interval (TTI, Transmission Time
Interval) it is the important indicator affecting user data delay.The transmission time that current LTE system uses
Interval is 1ms (hereinafter referred to as legacy TTI, tradition TTI), i.e. the every 1ms of transmitting terminal sends a number
According to block, receiving terminal often can receive a data block by 1ms.
In 3GPP (3rd Generation Partnership Project, third generation partner program)
RAN (Radio Access Network, wireless access network) #69 plenary session makes in LTE system
Set up the project by the problem of the TTI (short TTI, hereinafter for sTTI) of shorter duration, research
Use the feasibility of sTTI and possible beneficial effect.Have at present some documents such as R1-160942,
What R1-160930 was quantitative have studied the impact on LTE data delay that reduces of TTI duration, and analysis is aobvious
Showing, using sTTI is not merely that base station, the Transmission Time Interval of terminal shorten, accordingly, with this biography
The corresponding data processing time of defeated time interval also can decrease, such as data code modulation and number
All can reduce along with the reduction of data block size according to the demodulation time.Can in the LTE system of later release
The situation that two kinds of Transmission Time Intervals of legacy TTI with sTTI coexist can be there will be, i.e. same little
, there is existing use legacy TTI simultaneously and carry out the terminal of data transmit-receive in Qu Zhong, also has use sTTI to enter
The terminal of row data transmit-receive.In this case, it will usually the duration requiring legacy TTI is sTTI duration
Integral multiple, upper with avoid in TDD (Time Division Duplexing, time division duplex) system
Lower line interlacing interference problem.
In the TDD system using legacy TTI, HARQ (Hybrid Automatic Repeat
Request, hybrid automatic repeat-request) feedback sequential determines by standard, i.e. in subframe
The data that n sends, the HARQ ACK of its correspondence (Acknowledgement confirms response) or
NACK (Negative Acknowledgement, negative response) feedback information should be sent out in subframe m
Go out.Standard has arranged the number of n, m in the case of different TDD configuration (frame structure) in detail
Value.As a example by the descending HARQ feedback sequential of TDD configuration 2, as it is shown in figure 1, upper
Send out on the data sent on descending sub frame 4/5/6/8 in one frame sub-frame of uplink 2 the most in the current frame
Go out HARQ ACK or NACK feedback information, in descending sub frame 9 in previous frame and present frame
Descending sub frame 0/1/3 on send data on the sub-frame of uplink 7 of present frame, send HARQ accordingly
ACK or NACK feedback information.And for the descending HARQ feedback of other TDD configuration
Sequential and uplink HARQ feedback sequential are the most all described.
In the TDD system using sTTI, the frame of TDD/subframe structure is illustrated as shown in Figure 2.Still with
TDD configuration2 is.The sub-frame boundary of Legacy TTI with sTTI aligns, a legacy
TTI comprises integer sTTI, is to comprise as a example by 2 sTTI by a legacy TTI in Fig. 2.At present
When not yet determining use sTTI, how to design HARQ feedback sequential.
It is thus desirable to a kind of HARQ ACK or NACK in the case of using sTTI feeds back timing Design
Scheme.
Summary of the invention
The present invention is based on the problems referred to above, it is proposed that a kind of according to the TDD system using legacy TTI
HARQ feedback sequential determine the design side of HARQ feedback sequential of the TDD system using sTTI
Case, feeds back timing Design problem with HARQ ACK or NACK solved in the case of using sTTI.
In view of this, first aspect of the present invention it is proposed a kind of HARQ feedback method, including: root
The TDD system using sTTI is determined according to the HARQ feedback sequential of the TDD system using legacy TTI
The HARQ feedback sequential of system, wherein, legacy TTI is divided into P shorter duration by sTTI
TTI and formed, P is the integer more than or equal to 2；According to the described employing sTTI's determined
The data that during HARQ feedback of TDD system, ordered pair sends carry out HARQ feedback.
In this technical scheme, can be according to the TDD system of standard the most defined employing legacy TTI
HARQ feedback sequential determine the HARQ feedback sequential of TDD system using sTTI, thus right
The data sent carry out HARQ feedback, solving at the HARQ ACK used in the case of sTTI or
NACK feeds back timing Design problem, and wherein, the duration of a legacy TTI is the P of the duration of sTTI
Times, i.e. one legacy TTI comprises P sTTI, and P is the integer more than or equal to 2, such as, when
When P is 2, a legacy TTI comprises 2 sTTI, then time a length of 0.5ms of a sTTI.
In technique scheme, it is preferable that the described TDD system according to the described employing sTTI determined
The HARQ feedback sequential of the system data to receiving carry out the step of HARQ feedback, specifically include:
In the TDD system of described employing sTTI, for individual at the P corresponding to legacy TTI subframe n
The data sent in sTTI subframe, corresponding to sending out in P sTTI subframe of legacy TTI subframe m
Go out HARQ ACK or NACK feedback information, wherein, described legacy TTI subframe n and legacy
The corresponding relation of TTI subframe m is that the HARQ of the TDD system according to described employing legacy TTI is anti-
Feedback sequential determines, n and m is the integer of 0～9.
In this technical scheme, according to the TDD system of standard the most defined employing legacy TTI
A kind of design of the HARQ feedback sequential of the TDD system of the employing sTTI that HARQ feedback sequential determines
Scheme can be: specifies in using the HARQ feedback sequential of TDD system of legacy TTI, pin
The data sent in legacy TTI subframe n are sent accordingly in legacy TTI subframe m
HARQ ACK or NACK feedback information, the most correspondingly in the TDD system using sTTI
HARQ feedback sequential specifies, for corresponding to P the sTTI subframe in legacy TTI subframe n
The data of upper transmission, corresponding to sending HARQ in P sTTI subframe of legacy TTI subframe m
ACK or NACK feedback information, wherein, n and m represents the label of subframe, and the value of the two takes 0～9
Integer, when sending HARQ ACK feedback information, represent that the receiving terminal of data receives correct and returns
The confirmation response returned, now can send new data, and when sending HARQ NACK feedback information
Time, represent that the receiving terminal of data receives negative response that is wrong and that return, now need to resend last time
The data of transmission.
In technique scheme, it is preferable that the described TDD system according to the described employing sTTI determined
The HARQ feedback sequential of the system data to receiving carry out the step of HARQ feedback, specifically include:
In the TDD system of described employing sTTI, for corresponding to legacy TTI subframe n1,
N2 ..., the data that k × P the sTTI subframe of nk sends, corresponding to legacy TTI subframe m
P sTTI subframe on send HARQ ACK or NACK feedback information, wherein, described legacy
TTI subframe n1, n2 ..., the corresponding relation of nk Yu legacy TTI subframe m is according to described employing
The HARQ feedback sequential of the TDD system of legacy TTI determines, n1, n2 ..., nk and m is
The integer of 0～9, k is the integer more than or equal to 2.
In this technical scheme, according to the TDD system of standard the most defined employing legacy TTI
The another kind of the HARQ feedback sequential of the TDD system of the employing sTTI that HARQ feedback sequential determines sets
Meter scheme can be: specifies in using the HARQ feedback sequential of TDD system of legacy TTI,
For in legacy TTI subframe n1 ..., the data of the upper transmission of nk are accordingly in legacy TTI subframe m
On send HARQ ACK or NACK feedback information, the most correspondingly in the TDD system using sTTI
HARQ feedback sequential in specify, for corresponding in legacy TTI subframe n1 ..., the k of nk
The data sent in × P sTTI subframe, at P sTTI corresponding to legacy TTI subframe m
HARQ ACK or NACK feedback information, wherein, legacy TTI subframe n1 is sent on frame ...,
Nk arranges according to time order and function order, n1, n2 ..., nk and m represents the label of subframe, their value
Taking the integer of 0～9, k is the integer more than or equal to 2, specifically, when sending HARQ ACK feedback
During information, represent that the receiving terminal of data receives confirmation response that is correct and that return, now can send new
Data, and when sending HARQ NACK feedback information, represent that the receiving terminal of data receives mistake and returns
The negative response returned, now needs to resend the data of transmission last time.
In any of the above-described technical scheme, it is preferable that the described TDD system at described employing sTTI
In, for corresponding to legacy TTI subframe n1, n2 ..., k × P the sTTI subframe of nk is sent out
The data sent, corresponding to sending HARQ ACK in P sTTI subframe of legacy TTI subframe m
Or NACK feedback information, specifically include: described k × P sTTI subframe is divided into P individual to be feedback
STTI subframe group, corresponding to each sTTI in P sTTI subframe of legacy TTI subframe m
Send on frame for HARQ ACK or the NACK feedback letter often organizing described sTTI subframe group to be feedback
Breath.
In this technical scheme, further, according to standard the most defined employing legacy TTI's
During the HARQ feedback of the TDD system of the employing sTTI that the HARQ feedback sequential of TDD system determines
In the another kind of design of sequence, k × P sTTI subframe can be divided into P sTTI subframe to be feedback
Group, comprises k sTTI subframe, then, after packet, is corresponding in the most each sTTI subframe group to be feedback
Pin is sent correspondingly in each sTTI subframe in P sTTI subframe of legacy TTI subframe m
To often organizing HARQ ACK or the NACK feedback letter of the data sent in sTTI subframe group to be feedback
Breath, so, P sTTI can carry out P group sTTI to be feedback subframe group HARQ ACK or
NACK feeds back, and completes the operation of there is a need to HARQ ACK or NACK feedback.
A second aspect of the present invention, it is proposed that a kind of HARQ feedback device, comprises determining that module, uses
In determining the TDD using sTTI according to the HARQ feedback sequential of the TDD system using legacy TTI
The HARQ feedback sequential of system, wherein, legacy TTI is divided into P shorter duration by sTTI
TTI and formed, P is the integer more than or equal to 2；Feedback module, for determining according to described
The data that during HARQ feedback of the TDD system of the described employing sTTI that module determines, ordered pair sends are carried out
HARQ feedback.
In this technical scheme, can be according to the TDD system of standard the most defined employing legacy TTI
HARQ feedback sequential determine the HARQ feedback sequential of TDD system using sTTI, thus right
The data sent carry out HARQ feedback, solving at the HARQ ACK used in the case of sTTI or
NACK feeds back timing Design problem, and wherein, the duration of a legacy TTI is the P of the duration of sTTI
Times, i.e. one legacy TTI comprises P sTTI, and P is the integer more than or equal to 2, such as, when
When P is 2, a legacy TTI comprises 2 sTTI, then time a length of 0.5ms of a sTTI.
In technique scheme, it is preferable that described feedback module specifically for: at described employing sTTI
TDD system in, for corresponding in P sTTI subframe of legacy TTI subframe n send
Data, corresponding to send in P sTTI subframe of legacy TTI subframe m HARQ ACK or
NACK feedback information, wherein, described legacy TTI subframe n is corresponding with legacy TTI subframe m
Relation is that the HARQ feedback sequential of the TDD system according to described employing legacy TTI determines, n
With the integer that m is 0～9.
In this technical scheme, according to the TDD system of standard the most defined employing legacy TTI
A kind of design of the HARQ feedback sequential of the TDD system of the employing sTTI that HARQ feedback sequential determines
Scheme is: use legacy TTI TDD system HARQ feedback sequential in specify, for
The data sent in legacy TTI subframe n send HARQ accordingly in legacy TTI subframe m
ACK or NACK feedback information, the most correspondingly in the HARQ feedback of the TDD system using sTTI
Sequential specifies, at the number corresponding to sending in P sTTI subframe of legacy TTI subframe n
According to, corresponding to send in P sTTI subframe of legacy TTI subframe m HARQ ACK or
NACK feedback information, wherein, n and m represents the label of subframe, and the value of the two takes the integer of 0～9,
When sending HARQ ACK feedback information, represent that the receiving terminal of data receives confirmation that is correct and that return
Response, now can send new data, and when sending HARQ NACK feedback information, represents number
According to receiving terminal receive mistake and the negative response that returns, now need to resend the number of transmission last time
According to.
In technique scheme, it is preferable that described feedback module specifically for: at described employing sTTI
TDD system in, for corresponding to legacy TTI subframe n1, n2 ..., the k × P of nk
The data sent in sTTI subframe, corresponding to sending out in P sTTI subframe of legacy TTI subframe m
Go out HARQ ACK or NACK feedback information, wherein, described legacy TTI subframe n1,
N2 ..., the corresponding relation of nk Yu legacy TTI subframe m is according to described employing legacy TTI
The HARQ feedback sequential of TDD system determines, n1, n2 ..., nk and m is the integer of 0～9, k
For the integer more than or equal to 2.
In this technical scheme, according to the TDD system of standard the most defined employing legacy TTI
The another kind of the HARQ feedback sequential of the TDD system of the employing sTTI that HARQ feedback sequential determines sets
Meter scheme can be: specifies in using the HARQ feedback sequential of TDD system of legacy TTI,
For in legacy TTI subframe n1 ..., the data of the upper transmission of nk are accordingly in legacy TTI subframe m
On send HARQ ACK or NACK feedback information, the most correspondingly in the TDD system using sTTI
HARQ feedback sequential in specify, for corresponding in legacy TTI subframe n1 ..., the k of nk
The data sent in × P sTTI subframe, at P sTTI corresponding to legacy TTI subframe m
HARQ ACK or NACK feedback information, wherein, n1, n2 is sent on frame ..., nk and m represents son
The label of frame, their value takes the integer of 0～9, and k is the integer more than or equal to 2, specifically, when
When sending HARQ ACK feedback information, represent that the receiving terminal of data receives confirmation that is correct and that return and answers
Answer, now can send new data, and when sending HARQ NACK feedback information, represent data
Receiving terminal receive mistake and the negative response that returns, now need to resend the data of transmission last time.
In any of the above-described technical scheme, it is preferable that described feedback module specifically for: by described k × P
Individual sTTI subframe is divided into P sTTI subframe group to be feedback, at the P corresponding to legacy TTI subframe m
Send in each sTTI subframe in individual sTTI subframe for often organizing described sTTI subframe group to be feedback
HARQ ACK or NACK feedback information.
In this technical scheme, further, according to standard the most defined employing legacy TTI's
During the HARQ feedback of the TDD system of the employing sTTI that the HARQ feedback sequential of TDD system determines
In the another kind of design of sequence, k × P sTTI subframe can be divided into P sTTI subframe to be feedback
Group, comprises k sTTI subframe, then, after packet, is corresponding in the most each sTTI subframe group to be feedback
Pin is sent correspondingly in each sTTI subframe in P sTTI subframe of legacy TTI subframe m
To often organizing HARQ ACK or the NACK feedback letter of the data sent in sTTI subframe group to be feedback
Breath, so, P sTTI can carry out P group sTTI to be feedback subframe group HARQ ACK or
NACK feeds back, and completes the operation of there is a need to HARQ ACK or NACK feedback.
A third aspect of the present invention, it is proposed that a kind of base station, including: as any one of technique scheme
Described HARQ feedback device, therefore, this base station has as according to any one of technique scheme
All beneficial effects of HARQ feedback device, do not repeat them here.
A fourth aspect of the present invention, it is proposed that a kind of terminal, including: as any one of technique scheme
Described HARQ feedback device, therefore, this terminal has as according to any one of technique scheme
All beneficial effects of HARQ feedback device, do not repeat them here.
By technical scheme, can solve the HARQ ACK in the case of using sTTI or
NACK feeds back timing Design problem.
Accompanying drawing explanation
When Fig. 1 shows a kind of HARQ feedback of the TDD system of the employing TTI in correlation technique
Sequence schematic diagram；
Fig. 2 shows the frame/subframe structure of a kind of TDD system using sTTI in correlation technique
Schematic diagram；
Fig. 3 shows the schematic flow sheet of HARQ feedback method according to an embodiment of the invention；
Fig. 4 shows the one of the TDD system using sTTI according to an embodiment of the invention
HARQ feedback time diagram；
Fig. 5 shows the another kind of the TDD system using sTTI according to an embodiment of the invention
HARQ feedback time diagram；
Fig. 6 shows the schematic block diagram of HARQ feedback device according to an embodiment of the invention；
Fig. 7 shows the schematic block diagram of base station according to an embodiment of the invention；
Fig. 8 shows the schematic block diagram of terminal according to an embodiment of the invention.
Detailed description of the invention
In order to the above-mentioned purpose of the present invention, feature and advantage can be more clearly understood that, below in conjunction with the accompanying drawings
With detailed description of the invention, the present invention is further described in detail.It should be noted that do not conflicting
In the case of, the feature in embodiments herein and embodiment can be mutually combined.
Elaborate a lot of detail in the following description so that fully understanding the present invention, but, this
Invention can be implemented to use other to be different from other modes described here, therefore, and the guarantor of the present invention
Scope of protecting is not limited by following public specific embodiment.
Fig. 3 shows the schematic flow sheet of HARQ feedback method according to an embodiment of the invention.
As it is shown on figure 3, HARQ feedback method according to an embodiment of the invention, comprise the following steps:
Step 302, determines employing according to the HARQ feedback sequential of the TDD system using legacy TTI
The HARQ feedback sequential of the TDD system of sTTI, wherein, sTTI is that legacy TTI is divided into P
The TTI of individual shorter duration and formed, P is the integer more than or equal to 2.
Step 304, according to ordered pair during the HARQ feedback of the TDD system of the described employing sTTI determined
The data sent carry out HARQ feedback.
In this technical scheme, can be according to the TDD system of standard the most defined employing legacy TTI
HARQ feedback sequential determine the HARQ feedback sequential of TDD system using sTTI, thus right
The data sent carry out HARQ feedback, solving at the HARQ ACK used in the case of sTTI or
NACK feeds back timing Design problem, and wherein, the duration of a legacy TTI is the P of the duration of sTTI
Times, i.e. one legacy TTI comprises P sTTI, and P is the integer more than or equal to 2, such as, as
Shown in Fig. 2, when P is 2, a legacy TTI comprises 2 sTTI, the then duration of a sTTI
For 0.5ms.
Above-mentioned steps 304 specifically can be realized by following two embodiment.
Embodiment one:
In the TDD system of described employing sTTI, at the P corresponding to legacy TTI subframe n
The data sent in individual sTTI subframe, corresponding in P sTTI subframe of legacy TTI subframe m
Send HARQ ACK or NACK feedback information, wherein, described legacy TTI subframe n with
The corresponding relation of legacy TTI subframe m is the TDD system according to described employing legacy TTI
HARQ feedback sequential determines, n and m is the integer of 0～9.
In this technical scheme, according to the TDD system of standard the most defined employing legacy TTI
A kind of design of the HARQ feedback sequential of the TDD system of the employing sTTI that HARQ feedback sequential determines
Scheme can be: specifies in using the HARQ feedback sequential of TDD system of legacy TTI, pin
The data sent in legacy TTI subframe n are sent accordingly in legacy TTI subframe m
HARQ ACK or NACK feedback information, the most correspondingly in the TDD system using sTTI
HARQ feedback sequential specifies, for corresponding to P the sTTI subframe in legacy TTI subframe n
The data of upper transmission, corresponding to sending HARQ in P sTTI subframe of legacy TTI subframe m
ACK or NACK feedback information, wherein, n and m represents the label of subframe, and the value of the two takes 0～9
Integer, when sending HARQ ACK feedback information, represent that the receiving terminal of data receives correct and returns
The confirmation response returned, now can send new data, and when sending HARQ NACK feedback information
Time, represent that the receiving terminal of data receives negative response that is wrong and that return, now need to resend last time
The data of transmission.
Embodiment two:
In the TDD system of described employing sTTI, for corresponding to legacy TTI subframe n1,
N2 ..., the data that k × P the sTTI subframe of nk sends, corresponding to legacy TTI subframe m
P sTTI subframe on send HARQ ACK or NACK feedback information, wherein, described legacy
TTI subframe n1, n2 ..., the corresponding relation of nk Yu legacy TTI subframe m is according to described employing
The HARQ feedback sequential of the TDD system of legacy TTI determines, n1, n2 ..., nk and m is
The integer of 0～9, k is the integer more than or equal to 2.
In this technical scheme, according to the TDD system of standard the most defined employing legacy TTI
The another kind of the HARQ feedback sequential of the TDD system of the employing sTTI that HARQ feedback sequential determines sets
Meter scheme can be: specifies in using the HARQ feedback sequential of TDD system of legacy TTI,
For in legacy TTI subframe n1 ..., the data of the upper transmission of nk are accordingly in legacy TTI subframe m
On send HARQ ACK or NACK feedback information, the most correspondingly in the TDD system using sTTI
HARQ feedback sequential in specify, for corresponding in legacy TTI subframe n1 ..., the k of nk
The data sent in × P sTTI subframe, at P sTTI corresponding to legacy TTI subframe m
HARQ ACK or NACK feedback information, wherein, legacy TTI subframe n1 is sent on frame ...,
Nk arranges according to time order and function order, n1, n2 ..., nk and m represents the label of subframe, their value
Taking the integer of 0～9, k is the integer more than or equal to 2, specifically, when sending HARQ ACK feedback
During information, represent that the receiving terminal of data receives confirmation response that is correct and that return, now can send new
Data, and when sending HARQ NACK feedback information, represent that the receiving terminal of data receives mistake and returns
The negative response returned, now needs to resend the data of transmission last time.
Further, above-described embodiment two specifically can be accomplished by: by described k × P
STTI subframe is divided into P sTTI subframe group to be feedback, individual at the P corresponding to legacy TTI subframe m
Send in each sTTI subframe in sTTI subframe for often organizing described sTTI subframe group to be feedback
HARQ ACK or NACK feedback information.
In this technical scheme, further, according to standard the most defined employing legacy TTI's
During the HARQ feedback of the TDD system of the employing sTTI that the HARQ feedback sequential of TDD system determines
In the another kind of design of sequence, k × P sTTI subframe can be divided into P sTTI subframe to be feedback
Group, comprises k sTTI subframe, then, after packet, is corresponding in the most each sTTI subframe group to be feedback
Pin is sent correspondingly in each sTTI subframe in P sTTI subframe of legacy TTI subframe m
To often organizing HARQ ACK or the NACK feedback letter of the data sent in sTTI subframe group to be feedback
Breath, so, P sTTI can carry out P group sTTI to be feedback subframe group HARQ ACK or
NACK feeds back, and completes the operation of there is a need to HARQ ACK or NACK feedback.
Wherein, can have multiple to the mode of k × P sTTI subframe packet, such as, one of mode can
Think: according to time order and function order, these sTTI subframes are divided into P group sTTI to be feedback subframe group, enter
And can be in chronological sequence sequentially corresponding to sending in P sTTI subframe of legacy TTI subframe m
HARQ ACK or NACK feedback information；The two of mode can be: according to each sTTI subframe right
Relative ranks packet in the legacy TTI subframe answered, i.e. corresponding to legacy TTI subframe n1,
N2 ..., the numbering of the sTTI subframe of nk should be: n1 × P, n1 × P+1 ..., n1 × P+P-1, n2
× P, n2 × P+1 ..., n2 × P+P-1 ..., nk × P, nk × P+1 ..., nk × P+P-1, then
During packet, sTTI subframe is numbered n1 × P, n2 × P ..., sTTI subframe is numbered nk × P's
It is divided into first group of sTTI subframe group to be feedback, n1 × P+1, n2 × P+1 ..., nk × P+1 is divided into
Two groups of sTTI subframe groups to be feedback, by that analogy, until sTTI subframe is numbered n1 × P+P-1,
N2 × P+P-1 ..., nk × P+P-1 is divided into P group sTTI to be feedback subframe group.
Below in conjunction with specific embodiment, the packet mode of k × P sTTI subframe is described in detail.
In this specific embodiment, with the descending HARQ ACK of TDD configuration 2 or
As a example by NACK feedback, as it is shown in figure 1, according to current standard, it may be determined that descending son in previous frame
Frame 4/5/6/8 carries out HARQ ACK or NACK feedback in the sub-frame of uplink 2 of present frame, i.e.
K=4, n1=4, n2=5, n3=6, n4=8, m=2.
So, using in the case of sTTI, the frame of TDD/subframe structure signal is as in figure 2 it is shown, then
The P=2 corresponding with such scheme.
Corresponding to the sTTI of legacy TTI subframe 4/5/6/8, its sTTI subframe is numbered
8/9/10/11/12/13/16/17, then these 8 sTTI subframes can be divided into 2 groups of sTTI subframes to be feedback
Group.
When according to time order and function sequential packet, sTTI subframe 8/9/10/11 can be divided into first group,
STTI subframe 12/13/16/17 is divided into second group, then, corresponding to legacy TTI subframe 2
STTI subframe, its sTTI subframe is numbered 4/5.On the sTTI 4 of present frame, then carry out treating of previous frame
HARQ ACK or the NACK feedback of feedback sTTI subframe group one sTTI subframe 8/9/10/11, is working as
The sTTI subframe group two sTTI subframe to be feedback of previous frame is carried out in the sTTI subframe 5 of front frame
12/13/16/17 HARQ ACK or NACK feedback, the feedback sequential of its correspondence as shown in Figure 4,
For determining the descending sub frame 0/1/3 in descending sub frame 9 in previous frame and present frame according to current standard
The data of upper transmission carry out the feelings of HARQ ACK or NACK feedback in the sub-frame of uplink 7 of present frame
Condition, similar with foregoing teachings, repeat no more.
When according to the relative ranks packet in corresponding legacy TTI subframe of each sTTI subframe, can
So that sTTI subframe 8/10/12/16 is divided into first group, sTTI subframe 9/11/13/17 is divided into second
Group, then, corresponding to the sTTI subframe of legacy TTI subframe 2, its sTTI subframe is numbered 4/5.
On the sTTI 4 of present frame, then carry out the sTTI subframe group one sTTI subframe to be feedback of previous frame
8/10/12/16 HARQ ACK or NACK feedback, the sTTI subframe 5 of present frame is carried out on
HARQ ACK or NACK of the sTTI subframe group two sTTI subframe 9/11/13/17 to be feedback of one frame
Feedback, the feedback sequential of its correspondence is as it is shown in figure 5, under for determining in previous frame according to current standard
The data sent on descending sub frame 0/1/3 in row subframe 9 and present frame are at the sub-frame of uplink 7 of present frame
In carry out HARQ ACK or NACK feedback situation, similar with foregoing teachings, repeat no more.
Descending HARQ ACK or NACK of other TDD configuration feeds back and up
HARQ ACK or NACK feedback is similar, does not enumerates.
Fig. 6 shows the schematic block diagram of HARQ feedback device according to an embodiment of the invention.
As shown in Figure 6, HARQ feedback device 600, comprises determining that according to an embodiment of the invention
Module 602 and feedback module 604.
Wherein it is determined that module 602, anti-for the HARQ according to the TDD system using legacy TTI
Feedback sequential determines the HARQ feedback sequential of TDD system using sTTI, wherein, sTTI be by
Legacy TTI is divided into the TTI of P shorter duration and is formed, and P is whole more than or equal to 2
Number；Feedback module 604, for according to the described TDD determining described employing sTTI that module 602 determines
The data that during HARQ feedback of system, ordered pair sends carry out HARQ feedback.
In this technical scheme, can be according to the TDD system of standard the most defined employing legacy TTI
HARQ feedback sequential determine the HARQ feedback sequential of TDD system using sTTI, thus right
The data sent carry out HARQ feedback, solving at the HARQ ACK used in the case of sTTI or
NACK feeds back timing Design problem, and wherein, the duration of a legacy TTI is the P of the duration of sTTI
Times, i.e. one legacy TTI comprises P sTTI, and P is the integer more than or equal to 2, such as, when
When P is 2, a legacy TTI comprises 2 sTTI, then time a length of 0.5ms of a sTTI.
Above-mentioned feedback module 604 specifically may be used in embodiment one: at the TDD of described employing sTTI
In system, for corresponding in P sTTI subframe of legacy TTI subframe n send data,
Anti-corresponding to sending HARQ ACK or NACK in P sTTI subframe of legacy TTI subframe m
Feedforward information, wherein, described legacy TTI subframe n is root with the corresponding relation of legacy TTI subframe m
Determining according to the HARQ feedback sequential of the TDD system of described employing legacy TTI, n and m is
The integer of 0～9.
In this technical scheme, according to the TDD system of standard the most defined employing legacy TTI
A kind of design of the HARQ feedback sequential of the TDD system of the employing sTTI that HARQ feedback sequential determines
Scheme is: use legacy TTI TDD system HARQ feedback sequential in specify, for
The data sent in legacy TTI subframe n send HARQ accordingly in legacy TTI subframe m
ACK or NACK feedback information, the most correspondingly in the HARQ feedback of the TDD system using sTTI
Sequential specifies, at the number corresponding to sending in P sTTI subframe of legacy TTI subframe n
According to, corresponding to send in P sTTI subframe of legacy TTI subframe m HARQ ACK or
NACK feedback information, wherein, n and m represents the label of subframe, and the value of the two takes the integer of 0～9,
When sending HARQ ACK feedback information, represent that the receiving terminal of data receives confirmation that is correct and that return
Response, now can send new data, and when sending HARQ NACK feedback information, represents number
According to receiving terminal receive mistake and the negative response that returns, now need to resend the number of transmission last time
According to.
Above-mentioned feedback module 604 specifically may be used in embodiment two: at the TDD of described employing sTTI
In system, for corresponding to legacy TTI subframe n1, n2 ..., k × P the sTTI subframe of nk
The data of upper transmission, corresponding to sending HARQ in P sTTI subframe of legacy TTI subframe m
ACK or NACK feedback information, wherein, described legacy TTI subframe n1, n2 ..., nk with
The corresponding relation of legacy TTI subframe m is the TDD system according to described employing legacy TTI
HARQ feedback sequential determines, n1, n2 ..., nk and m is the integer of 0～9, and k is for being more than or equal to
The integer of 2.
In this technical scheme, according to the TDD system of standard the most defined employing legacy TTI
The another kind of the HARQ feedback sequential of the TDD system of the employing sTTI that HARQ feedback sequential determines sets
Meter scheme can be: specifies in using the HARQ feedback sequential of TDD system of legacy TTI,
For in legacy TTI subframe n1 ..., the data of the upper transmission of nk are accordingly in legacy TTI subframe m
On send HARQ ACK or NACK feedback information, the most correspondingly in the TDD system using sTTI
HARQ feedback sequential in specify, for corresponding in legacy TTI subframe n1 ..., the k of nk
The data sent in × P sTTI subframe, at P sTTI corresponding to legacy TTI subframe m
HARQ ACK or NACK feedback information, wherein, n1, n2 is sent on frame ..., nk and m represents son
The label of frame, their value takes the integer of 0～9, and k is the integer more than or equal to 2, specifically, when
When sending HARQ ACK feedback information, represent that the receiving terminal of data receives confirmation that is correct and that return and answers
Answer, now can send new data, and when sending HARQ NACK feedback information, represent data
Receiving terminal receive mistake and the negative response that returns, now need to resend the data of transmission last time.
In above-described embodiment two, described feedback module 604 specifically for: by described k × P sTTI
Subframe is divided into P sTTI subframe group to be feedback, at P the sTTI corresponding to legacy TTI subframe m
Send in each sTTI subframe in subframe for the HARQ often organizing described sTTI subframe group to be feedback
ACK or NACK feedback information.
In this technical scheme, further, according to standard the most defined employing legacy TTI's
During the HARQ feedback of the TDD system of the employing sTTI that the HARQ feedback sequential of TDD system determines
In the another kind of design of sequence, k × P sTTI subframe can be divided into P sTTI subframe to be feedback
Group, comprises k sTTI subframe, then, after packet, is corresponding in the most each sTTI subframe group to be feedback
Pin is sent correspondingly in each sTTI subframe in P sTTI subframe of legacy TTI subframe m
To often organizing HARQ ACK or the NACK feedback letter of the data sent in sTTI subframe group to be feedback
Breath, so, P sTTI can carry out P group sTTI to be feedback subframe group HARQ ACK or
NACK feeds back, and completes the operation of there is a need to HARQ ACK or NACK feedback.
In figure 6, determine that module 602 and feedback module 604 can be CPU (Central
Processing Unit, CPU), microprocessor or digital signal processor (Digital Signal
Processor, DSP).
Fig. 7 shows the schematic block diagram of base station according to an embodiment of the invention.
As it is shown in fig. 7, base station 700 according to an embodiment of the invention, including: such as technique scheme
According to any one of HARQ feedback device 600, therefore, this base station 700 has such as above-mentioned technical side
All beneficial effects of the device for allocating resources 600 according to any one of case, do not repeat them here.
Fig. 8 shows the schematic block diagram of terminal according to an embodiment of the invention.
As shown in Figure 8, terminal 800 according to an embodiment of the invention, including: such as technique scheme
According to any one of HARQ feedback device 600, therefore, this terminal 800 has such as above-mentioned technical side
All beneficial effects of the device for allocating resources 600 according to any one of case, do not repeat them here.
Technical scheme is described in detail above in association with accompanying drawing, by technical scheme,
HARQ ACK or NACK in the case of using sTTI can be solved and feed back timing Design problem.
The foregoing is only the preferred embodiments of the present invention, be not limited to the present invention, for this
For the technical staff in field, the present invention can have various modifications and variations.All spirit in the present invention and
Within principle, any modification, equivalent substitution and improvement etc. made, should be included in the protection of the present invention
Within the scope of.
Claims (10)
1. a HARQ feedback method, it is characterised in that including:
HARQ feedback sequential according to the TDD system using legacy TTI determines employing sTTI's
The HARQ feedback sequential of TDD system, wherein, sTTI is that legacy TTI is divided into P is shorter
The TTI of duration and formed, P is the integer more than or equal to 2；
The data that during HARQ feedback of the TDD system according to the described employing sTTI determined, ordered pair sends
Carry out HARQ feedback.
HARQ feedback method the most according to claim 1, it is characterised in that described basis is true
The HARQ feedback sequential of the TDD system of the fixed described employing sTTI data to receiving are carried out
The step of HARQ feedback, specifically includes:
In the TDD system of described employing sTTI, at the P corresponding to legacy TTI subframe n
The data sent in individual sTTI subframe, corresponding in P sTTI subframe of legacy TTI subframe m
Send HARQ ACK or NACK feedback information, wherein, described legacy TTI subframe n with
The corresponding relation of legacy TTI subframe m is the TDD system according to described employing legacy TTI
HARQ feedback sequential determines, n and m is the integer of 0～9.
HARQ feedback method the most according to claim 1, it is characterised in that described basis is true
The HARQ feedback sequential of the TDD system of the fixed described employing sTTI data to receiving are carried out
The step of HARQ feedback, specifically includes:
In the TDD system of described employing sTTI, for corresponding to legacy TTI subframe n1,
N2 ..., the data that k × P the sTTI subframe of nk sends, corresponding to legacy TTI subframe m
P sTTI subframe on send HARQ ACK or NACK feedback information, wherein, described legacy
TTI subframe n1, n2 ..., the corresponding relation of nk Yu legacy TTI subframe m is according to described employing
The HARQ feedback sequential of the TDD system of legacy TTI determines, n1, n2 ..., nk and m is
The integer of 0～9, k is the integer more than or equal to 2.
HARQ feedback method the most according to claim 3, it is characterised in that described described
Use in the TDD system of sTTI, for corresponding to legacy TTI subframe n1, n2 ..., nk's
The data sent in k × P sTTI subframe, at P sTTI corresponding to legacy TTI subframe m
Send HARQ ACK or NACK feedback information on frame, specifically include:
Described k × P sTTI subframe is divided into P sTTI subframe group to be feedback, corresponding to legacy
Send for often organizing described to be feedback in each sTTI subframe in P sTTI subframe of TTI subframe m
The HARQ ACK of sTTI subframe group or NACK feedback information.
5. a HARQ feedback device, it is characterised in that including:
Determine module, true for the HARQ feedback sequential according to the TDD system using legacy TTI
Surely using the HARQ feedback sequential of the TDD system of sTTI, wherein, sTTI is to be drawn by legacy TTI
Being divided into the TTI of P shorter duration and formed, P is the integer more than or equal to 2；
Feedback module, for according to the described TDD system determining described employing sTTI that module determines
The data that during HARQ feedback, ordered pair sends carry out HARQ feedback.
HARQ feedback device the most according to claim 5, it is characterised in that described feedback mould
Block specifically for:
In the TDD system of described employing sTTI, at the P corresponding to legacy TTI subframe n
The data sent in individual sTTI subframe, corresponding in P sTTI subframe of legacy TTI subframe m
Send HARQ ACK or NACK feedback information, wherein, described legacy TTI subframe n with
The corresponding relation of legacy TTI subframe m is the TDD system according to described employing legacy TTI
HARQ feedback sequential determines, n and m is the integer of 0～9.
HARQ feedback device the most according to claim 5, it is characterised in that described feedback mould
Block specifically for:
In the TDD system of described employing sTTI, for corresponding to legacy TTI subframe n1,
N2 ..., the data that k × P the sTTI subframe of nk sends, corresponding to legacy TTI subframe m
P sTTI subframe on send HARQ ACK or NACK feedback information, wherein, described legacy
TTI subframe n1, n2 ..., the corresponding relation of nk Yu legacy TTI subframe m is according to described employing
The HARQ feedback sequential of the TDD system of legacy TTI determines, n1, n2 ..., nk and m is
The integer of 0～9, k is the integer more than or equal to 2.
HARQ feedback device the most according to claim 7, it is characterised in that described feedback mould
Block specifically for:
Described k × P sTTI subframe is divided into P sTTI subframe group to be feedback, corresponding to legacy
Send for often organizing described to be feedback in each sTTI subframe in P sTTI subframe of TTI subframe m
The HARQ ACK of sTTI subframe group or NACK feedback information.
9. a base station, it is characterised in that including: as according to any one of claim 5 to 8
HARQ feedback device.
10. a terminal, it is characterised in that including: as according to any one of claim 5 to 8
HARQ feedback device.
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