WO2011022920A1

WO2011022920A1 - Timing method and apparatus for hybrid automatic repeat request

Info

Publication number: WO2011022920A1
Application number: PCT/CN2009/076282
Authority: WO
Inventors: 宁丁; 关艳峰; 刘向宇; 刘颖
Original assignee: 中兴通讯股份有限公司
Priority date: 2009-08-28
Filing date: 2009-12-30
Publication date: 2011-03-03
Also published as: CN101997663B; CN101997663A

Abstract

A timing method and apparatus for Hybrid Automatic Repeat Request (HARQ) are provided by the present invention. The method includes: determining the feedback time according to predetermined parameters (400), transmitting the feedback message of HARQ at the feedback time (401). The predetermined parameters include one of the following or the combinations of: time for processing data by the terminal Tproc_MS, time for processing data by the base station Tproc_BS, transmission time interval (TTI), number of sub-frames in one frame F and protecting time P. By the method of the present invention, once the terminal completes the process for the data packet, it can perform transmission without waiting for the appearance of a fixed frame number. So it is guaranteed that the terminal or the base station can complete HARQ feedback within the shortest time. Too long waiting time for feedback is avoided and the speed for HARQ feedback is improved.

Description

Timing method and device for hybrid automatic repeat request

The present invention relates to automatic retransmission techniques, and more particularly to a timing method and apparatus for hybrid automatic repeat request. Background technique

Hybrid Automatic Repeat Request ( HARQ) technology is an improvement on the traditional automatic repeat request (ARQ) technology. HARQ technology combines ARQ technology with Forward Error Correction (FEC) technology to reduce the impact of time-varying fading channels on the bit error rate of received data, enabling wireless communication systems to provide higher and more stable data throughput. HARQ is one of the key technologies of the current mainstream 4G systems, such as the Long Term Evolution (LTE), Long-Term Evolution (LTE) system and the IEEE 802.16m system.

In a Frequency Division Duplex (FDD) system, the uplink/downlink can simultaneously transmit data or signals. In order to reduce the system delay caused by the system link structure and to flexibly allocate the data payload on the uplink/downlink, one radio frame is usually further divided into a plurality of subframes with smaller time granularity. The number of subframes (that is, the length of time) occupied by one data packet is the transmission time interval (TTI, Transmission Time Interval) of the data packet. 1 is a schematic diagram of a radio frame structure of the related art. In the radio frame structure shown in FIG. 1, a radio frame is divided into 8 sub-frames, and all radio frames are sequentially numbered according to the principle of sequential increment. No. 8 sub-frames are denoted as SF0~SF7, respectively, where the uplink and the downlink have the same frame structure.

For a downlink HARQ process, one or more subframes on the downlink are allocated to the HARQ process for carrying a data channel, and accordingly, one or more subframes on the uplink are also assigned to the HARQ process. Used to carry a feedback channel. Again, for an upstream HARQ Procedure, one or more subframes on the uplink are allocated to the HARQ process for carrying a data channel, and accordingly, one or more subframes on the downlink are also allocated to the HARQ process for carrying feedback channel. For example, for an uplink HARQ process, one or more uplink subframes on the uplink are used to carry a data channel, and correspondingly, one or more downlink subframes on the downlink are used to carry feedback corresponding to the data channel. channel.

After receiving the data carried by the data channel, the receiving end needs a certain processing time to determine the feedback signal corresponding to the data (the feedback signal is carried on the feedback channel), wherein the processing time is called the receiving processing delay, and the feedback channel is passed. The predetermined mapping relationship is carried on the corresponding subframe.

In a Time Division Duplex (TDD) system, for a wireless communication system based on OFDM or OFDMA, the radio resource mapping is mainly based on the frame structure and resource structure of the wireless communication system, and the frame structure is used to describe the radio resources in time. The control structure on the domain, the resource structure is used to describe the control structure of the radio resources in the frequency domain. The frame structure divides the radio resources into different levels of units in the time domain, such as a superframe, a frame, a subframe, and a symbol, by setting different control channels, for example, a broadcast channel. , unicast and multicast channels, etc. to achieve scheduling control.

2 is a schematic diagram of a frame structure of a related art wireless communication system. As shown in FIG. 2, a radio resource is divided into super frames in a time domain, each super frame includes 4 frames, and each frame includes 8 subframes, and a sub-frame The frame consists of six basic OFDMA symbols. In an actual system, the number of OFDMA symbols included in each level unit in the frame structure is determined according to factors such as the bandwidth to be supported and/or the cyclic prefix length of the OFDMA symbol. Each of the frames may include a plurality of downlink subframes and uplink subframes, and the data packets sent in the downlink subframe are sent by the base station to the terminal, and the terminal performs HARQ feedback through the uplink subframe. Similarly, the data sent in the uplink subframe. The packet is sent by the terminal to the base station, and the base station performs HARQ feedback through the downlink subframe.

In addition, the system can set a broadcast channel in the first downlink subframe in the superframe (because it is located in the superframe header, the broadcast channel is also called a superframe header (SFH)) and send System information such as resource mapping; and the system may also set scheduling control information such as unicast and/or multicast-type control channel transmission resource allocation. At the same time, the system may also have an Advanced MAP channel (A-MAP, Advanced MAP) channel, and the A-MAP channel is located in the downlink subframe, and transmits service control information, and may include at least a user-specific A-MAP and a HARQ feedback A-MAP. , one or any combination of control information such as Power control A-MAP, Assignment A-MAP. The broadcast channel (superframe header) and the A-MAP (Advanced MAP) channel may also be referred to as a control channel.

In the current related art, the formula for calculating HARQ timing can be applied to various situations and does not require a large amount of space storage, but the current formula is not perfect for processing in some cases, for example, in frequency division duplex (FDD) , Frequency Division Duplex ) In the downlink mode, feedback often needs to wait for a long time, making the processing time of the entire HARQ longer. In a communication system, operations such as transmitting a data packet, transmitting an A-MAP, and transmitting a feedback occur at a specific time, and a certain time in the present specification refers to a specific subframe of a certain frame.

FIG. 3 is a schematic diagram of a related art FDD mode HARQ downlink feedback. As shown in FIG. 3, the system has 8 subframes. Assume that the terminal processes data at the time Tproc _MS = 4, and the subframe numbered 1 carries the allocated downlink data packet. Thus, the terminal has a fixed feedback subframe number of 5. If the terminal has not finished processing the data packet when transmitting the subframe with the sequence number of 5, the terminal needs to delay the subframe with the sequence number 5 of the next frame to send the HARQ feedback. It can be seen that in the FDD downlink mode, the terminal may need to wait for a certain time after completing the processing of the data packet and can send the feedback information, and sometimes the waiting time can be close to one frame time.

Aiming at the problem that the HARQ timing method has a large delay in the related art, an effective solution has not been proposed yet. Summary of the invention

SUMMARY OF THE INVENTION A primary object of the present invention is to provide a timing method and apparatus for hybrid automatic repeat request that can improve the speed of HARQ feedback.

In order to achieve the above object, according to an aspect of the present invention, a hybrid automatic weight is provided The timing method for transmitting requests, including:

Determining a feedback moment according to a predetermined parameter, and transmitting a feedback message of the hybrid automatic retransmission request at the determined feedback moment;

The predetermined parameter includes at least one or a combination of the following: a time at which the terminal processes data

TprocMs, the time at which the base station processes data TprocBs, transmission time interval TTI, and guard time P.

The present invention further provides a timing device for a hybrid automatic repeat request, comprising: a calculating module, configured to determine a feedback moment according to a predetermined parameter, wherein the predetermined parameter comprises at least one or a combination of the following: Time, the time at which the base station processes data, the transmission time interval, the number of subframes included in one frame, and the guard time;

And a sending module, configured to send a feedback message of the hybrid automatic repeat request at the determined feedback moment.

The present invention further provides a timing method for hybrid automatic repeat request, which includes: determining a feedback moment according to a predetermined parameter, and transmitting a feedback message of the hybrid automatic retransmission request at the determined feedback moment;

The predetermined parameter includes at least one or a combination of: a time for processing data Tproc, a transmission time interval TTI, and a guard time P;

When the time Tproc of processing the data is a fixed value, the method further includes:

The time Tproc to process the data is determined according to the number of subframes included in one frame in the system.

The method of the present invention determines a feedback moment according to a predetermined parameter, so as to send a feedback message of the hybrid automatic repeat request at the feedback moment, where the predetermined parameter includes at least one of the following: a time Tproc _{MS for} processing the data by the terminal, a time Tproc _{BS for} processing the data by the base station, Transmission time interval TTI and protection time P. When the terminal transmits data, ^ ^ is the processing time ^Tpr0C Ms_ required for the terminal to transmit data. When the terminal receives the data, ^T P ^roc Ms is the time when the terminal receives the data and sends the feedback ACK/NACK ^^^ - ; When the base station transmits data, ^ is sent to the base station. The processing time required for the data is when the base station receives the data, ^ is the time Tproc _{BS RE1 for} transmitting the feedback ACK/NACK after the base station receives the data, or when the base station receives the data, the time when the base station processes the data is ^ ⁴ for the base station to receive The time after sending the data ACK/NACK and control message (such as A-MAP IE) ^ ^-. With the method of the present invention, the terminal can be sent as long as the processing of the data packet is completed, without waiting for a fixed frame number to appear, which ensures that the terminal or the base station completes the HARQ feedback in the fastest time, and avoids the waiting time of the feedback being too long. Increased the speed of HARQ feedback. DRAWINGS

1 is a schematic diagram of a radio frame structure of a related art;

2 is a schematic diagram of a frame structure of a related art wireless communication system;

3 is a schematic diagram of HARQ downlink feedback in a FDD mode of a related art;

4 is a flow chart of an embodiment of a HARQ timing method of the present invention;

5 is a schematic diagram of an embodiment of HARQ downlink feedback in the FDD mode of the present invention; and FIG. 6 is a schematic diagram of an embodiment of the HARQ timing apparatus of the present invention. detailed description

In the present invention, the HARQ timing method refers to a method of determining the HARQ feedback timing. 4 is a flow chart of an embodiment of a HARQ timing method of the present invention. As shown in FIG. 4, the method includes: Step 400: Determine a feedback moment according to a predetermined parameter, to send a feedback message of the hybrid automatic repeat request at the feedback moment. The predetermined parameter includes at least one of the following: a time Tproc _{MS for} processing the data by the terminal, a time Tproc _{BS for} processing the data by the base station, a transmission time interval, or a guard time. Here, the time Tproc _{MS of the} terminal processing data, and/or the time TprocBs at which the base station processes the data may be referred to as the time Tproc of processing the data. The transmission time interval of the data packet is also considered to be the number of subframes that the data packet spans. In the embodiment of the present invention, the size of the _TTI is represented by N _TTI , where N _TT ^ is the transmission time interval TTI of the data packet. The number of subframes.

Depending on the situation, the time TprocMs of the above-mentioned terminal processing data or the time TprocMs of the base station processing data may be fixed or may be changed according to the conditions of the terminal and the base station.

Step 401: Send a feedback message of the hybrid automatic repeat request at the feedback moment.

According to the timing method of the HARQ according to the embodiment of the present invention, the feedback time may be determined according to at least one of the time at which the terminal processes the data, the time at which the base station processes the data, the transmission time interval, and the protection time, so that the terminal or the base station only needs to complete the data packet. The processing can be sent without waiting for a fixed frame number to appear, thereby shortening the HARQ feedback time and increasing the speed of HARQ feedback.

In the embodiment of the HARQ timing method of the present invention, in the FDD downlink mode, a fixed feedback subframe number is not set for data transmitted in a certain subframe, and the time, TTI, and sub-frame of each frame are processed according to the terminal. At least one of the number of frames and the guard time is used to determine the timing of the feedback. In this way, the terminal can transmit as long as the processing of the data packet is completed, without waiting for a fixed frame number to appear, thereby shortening the feedback time of the HARQ and improving the speed of the HARQ feedback.

In the embodiment of the HARQ timing method of the present invention, in the TDD downlink mode, a fixed feedback subframe number is not set for data transmitted in a certain subframe, and according to terminal processing time, TTI, number of subframes per frame, The feedback timing is determined by at least one of the uplink and downlink subframe ratio and the guard time of each frame. In this way, the terminal can transmit as long as the processing of the data packet is completed, and does not need to wait for the fixed frame number to appear, thereby shortening the feedback time of the HARQ and improving the speed of the HARQ feedback.

The implementation process of the embodiment of the present invention will be described in detail below with reference to examples.

First embodiment. The time when the first embodiment is applied to the terminal processing time (TprocMs, MS Processing Time) and/or the time when the base station processes the data (Tproc _BS , BS Processing Time) is a fixed value and is a scenario of the FDD mode. Wherein, when the terminal transmits data, ^f^^ is the processing time required for the terminal to transmit data, and when the terminal receives the data, ^^^-^ is the time when the terminal receives the data and sends the feedback ACK/NACK ^^^ - ; When the base station transmits data, ^ the processing time required for the base station to transmit data when the base station receives the data, ^ is the time when the base station receives the data and then sends the feedback ACK/NACK, or when the base station receives the data, the base station processes the data. Time ^ sends feedback after the base station receives the data.

The time of ACK/NACK and control messages (such as A-MAP IE) ^ ^ 2.

Assuming that there are F subframes in one frame of the system, and the base station sends a data packet on the mth downlink subframe of the ith frame, the terminal only needs to wait for a specific time Delay to perform feedback without waiting for a fixed one. The sub-frame number appears. According to the method of the present invention, if the terminal transmits feedback information in the nth uplink subframe of the jth frame, the frame number j and the subframe number n at the time of feedback can be calculated by using formula (1) and formula (2), so as to Send feedback information on the nth subframe of the jth frame: j = i + floor((Delay + m) l F) (丄) n = {Delay + m) mod F (2) where

Represents the largest integer less than or equal to x; Delay is determined by at least one of terminal processing time, TTI, and guard time; Mod represents a modulo operation.

In addition,

The period indicating the A-MAP channel is generally equal to 1, and may be any integer greater than 1 to less than or equal to the number of downlink subframes. If N _A _MAP is greater than 1, then ^{Z is} used to indicate that the HARQ sub-packet and the A-MAP information may be located in the same subframe, or that the HARQ sub-packet may be located in the subframe where the A-MAP information is located. After the first sub-frame. Where / for a packet with a TTI greater than 1, it refers to the location where the packet starts, not the location where the AM AP information element (IE, Information Element) appears, and the value is always equal to 0, the corresponding A- of the packet The MAP IE appears between the second downlink subframe of the previous frame and the first subframe of the current frame. / For a packet with a TTI equal to 1, it refers to the location where the packet starts and the location where the A-MAP IE appears. The specific relationship is shown in Table 1.

Table 1

In the FDD downlink mode, the delay time Delay can be calculated by the formula (3) according to at least one of the terminal processing time, the TTI, and the guard time:

Delay = V _m + Tproc _MS + P (3) where N _TT ^ is the number of subframes corresponding to the TTI of the packet, P is the guard time, which is used to reserve a certain redundancy time, and P can default to 0. Here, the calculation of the Delay by the formula (3) is only an example, and the embodiment of the present invention is not limited thereto. For example, the Delay may also be equal to the value of N _TTI , TprocMS or P, or may be equal to the sum of the two combinations thereof.

In addition, when the time TprocMS of the data processing by the terminal and/or the time Tproces of the data processing by the base station is a fixed value, the time Tproces of the base station processing data and the time TprocMS of the terminal processing data may be determined according to the number of subframes of one frame in the system, where when the terminal transmits data, ^^^ s processing time required for data transmission to the terminal when the terminal ⁷ receives the data, ^T P ^roc after the terminal receives the data transmission ACK / NACK feedback time ^TPWC MS-RE When the base station transmits data, ^ the processing time required for the base station to transmit data ^T P ^r0C B _S — , when the base station receives the data, the ^Tpr0CBS is the time when the base station receives the data and sends the feedback ACK/NACK when the Tproc _{BS RE} " or Time when the base station processes data when receiving data

^T P ^roc s sends feedback ACK/NACK and control messages (such as A-MAP) after the base station receives the data.

IE) time is ^K£2 . For example, Tproc _BS and T rocMs can be calculated by the following formula (4) and formula (5):

Tproc _MS = floor((x - ) / 2) + 2,0 << 8 ( ₄ ) Tproc _BS = floor((x - ) / 2) + 2,0 < j < 8 ₍₅₎ where y^^ o) represents the largest integer less than or equal to X, where _x is the number of subframes in a frame. It can be seen that, in the case where i and j take different values, it is determined according to the number of subframes in one frame.

Tproces is different from rocMs.

For example, in the case of i=6 and j=6, when there are 6 or 7 subframes in a frame, then Tproc _BS and Tproc _{MS are} equal to 2; when there are 8 subframes in a frame, Tproc _BS and Tproc _MS Equal to 3.

Further, the embodiment is applied to FDD mode embodiment of the present scene, for the case of TDD mode, as long as there is a corresponding Tproc _BS or Tproc _MS or Tproc _BS can be determined using the same method Tproc _MS.

Specifically:

Tproc _{MS TR} = floor{{x -β1)/2) + 2,0 < ol <8; and / or, Tproc _{MS m} = floor{{x -«2)/2) + 2,0 < β2 <8; and / or, Tproc _{BS TR} = floordx -M)/2) + 2,0≤ <8; and / or, Tproc _{BS REl} = floor((x _-1⁄2 )/2) + 2,0 < /?2 <8; and / or, Tproc _{BS RE2} = floor{{x -1⁄2)/2) + 2,0 < 1⁄2 <8; Where X is the number of subframes included in one frame in the system; ^( ^X ) represents the largest integer less than or equal to X.

FIG. 5 is a schematic diagram of an embodiment of HARQ downlink feedback in an FDD mode according to the present invention. As shown in Figure 5, assuming that there are 8 subframes in the system, Tproc _MS = 4, Νχτι = 1 , Ρ=0, the base station sends the assigned downlink data packet in the first subframe in the i-th frame, and Delay=Tproc _MS + N _TTI + P, which can be calculated according to formulas (1) and (2): j ^{= l} , ⁿ = ⁶ , that is, the terminal transmits feedback information on the sixth uplink subframe of the i-th frame.

Second embodiment.

The second embodiment is applied to the time TprocMs at which the terminal processes data and/or the time Tproc _{BS at which the} base station processes the data is a variable value, and is a scenario of the FDD mode. The second embodiment 2 differs from the first embodiment in that: Tproc _MS and/or Tproc _BS are variable values, and in turn, the size of both needs to be indicated by indication signaling.

When the time TprocMs of the data processing by the terminal is not a fixed value, the base station may send the first indication signaling in a control channel or a control message of the communication system, where the control channel includes a super frame header or an A-MAP channel, The control message includes a capability negotiation message or a registration message, or the terminal may send the second indication signaling in the capability negotiation message or the registration message of the communication system, where the first indication signaling or the second indication signaling is used to indicate the Tproc _MS . Value.

When the time TprocMs of the data processing by the base station is not a fixed value, the base station may send the third indication signaling in a control channel or a control message of the communication system, where the control channel includes a super frame header or an A-MAP channel, The control message includes a capability negotiation message or a registration message. The third indication signaling is used to indicate the value of the Tproc _BS .

For example, Tproc _BS and Tproc _MS can be represented by 1-bit indication signaling TBS and TMS, respectively. Tables 2 and 3 illustrate the representation of Tproc _BS and Tproc _M s.

Table 2

As shown in Table 2, when the indication signaling TBS = 0, the value of the Tproc _BS is 2; when the indication signaling TBS = 1, the value of the Tproc _BS is 3.

As shown in Table 3, when the indication signaling TBS = 0, the value of Tproc _MS is 2; when the indication signaling TBS = 1, the value of TprocMs is 3.

Further, the scenario of a second embodiment applied to the FDD mode, TDD mode in the case, as long as there is a corresponding Tproc _BS or Tproc _MS can also be determined by the same method Tproc _BS or TprocMs- Similarly, downlink in the FDD mode, according to At least one of the terminal processing time, the TTI, and the guard time, the delay time Delay can be calculated by the above formula (3). In addition, Delay can also be equal to N _TTI , TprocMS or P , or it can be equal to the sum of their two combinations.

Then, the frame number and the subframe number at the time of transmitting the feedback can be calculated by the formula (1) and the formula (2). Third embodiment.

The third embodiment is applied to the time when the terminal processes data TprocMs and the time when the base station processes the data TprocBS is a fixed value or a non-fixed value, and is a scenario of the FDD mode.

In the downlink HARQ timing, there are F subframes in one frame of the system, the base station transmits a data packet on the mth downlink subframe of the i-th frame, and the terminal sends feedback information in the nth uplink subframe of the j-th frame. The frame number and subframe number when downlink HARQ transmission feedback is calculated by Table 4 and Equation 5:

(downlink transmission)

HARQ sub-package m = l, or

i

(downlink transmission) m = l + N _A — _MAP - l

HARQ feedback. ". _fl "ceil(m + 72) ) _{Α Λ} n = ceil(m+F/2) mod F j = i + floor—— \ ^{+ z} mod4

(uplink transmission) Table 4

In Table 4, ^{Z _}

(5) In formula (5), N _TT ^ is the number of subframes corresponding to the transmission time interval TTI of the data packet, and Tproc refers to the time TprocMs of the terminal processing data. The third embodiment only cites an example, this parameter The value can also take other values. Where ^^^( ^x ) represents the largest integer less than or equal to X, and C / (X) represents the smallest integer greater than or equal to X. When the time Tproc _{MS of the} data processing by the terminal or the time Tproc _BS of the data processing by the base station is a fixed value, the time at which the base station processes the data may be determined according to the number of subframes of one frame in the system.

The time TprocMs of the TprocMs and the terminal processing data, wherein, when the terminal transmits data, the processing time required for the ^TpWCMS to transmit data for the terminal is ^^^ - ⁷ ^ , and when the terminal receives the data, the ^TpWC Ms sends a feedback ACK for the terminal to receive the data. /NACK time ^{TpWC Ms_RE} . When the base station transmits data, ^ is the processing time required for the base station to transmit data ^ ^^^, when the base station receives the data, the ^Tpr0CBS is the time when the base station receives the data and sends the feedback ACK/NACK. ' _t BS REI or, when the base station receives data, the time when the base station processes the data is the time when the base station receives the data and sends the feedback ACK/NACK and the control message (such as A-MAP IE).

^T P ^roc Bs_RE2 _o For example, Tproc _BS and Tproc _MS can be calculated by the above formula (3) and formula (4). When each frame includes 6 or 7 sub-frames, by formula (3) and formula (4) Calculate Tproc= ² ; When each frame contains 8 sub-frames, Tproc=3 is calculated by formula (3) and formula ( ⁴ ).

In addition, the third embodiment is an example in the FDD mode. For the TDD mode, the Tproc _BS or the Tproc _MS can be determined in the same manner as long as there is a corresponding Tproc _BS or Tproc _MS .

The base station may send the first indication signaling in a control channel or a control message of the communication system, where the control channel includes a super frame header or an A-MAP channel, where the time TprocMS of the terminal processing data is not a fixed value, The control message includes a capability negotiation message or a registration message, or the terminal may send the second indication signaling in the capability negotiation message or the registration message of the communication system, where the first indication signaling or the second indication signaling is used to instruct the terminal to process the data. The value of the time Tproc _MS .

The base station may send the third indication signaling in the control channel or the control message of the communication system, where the control channel includes a super frame header or an A-MAP channel, where the time when the data is processed by the base station is not fixed. The control message includes a capability negotiation message or a registration message. The third indication signaling is used to indicate the value of the time TprocBS at which the base station processes data.

For example, as shown in Tables 2 and 3 above, TBASE _BS and Tproc _MS can be represented by 1-bit indication signaling TBS and TMS, respectively.

Further, the third embodiment is an example in FDD mode, TDD mode corresponding to, as long as there is a corresponding Tproc _BS or Tproc _MS or Tproc _BS can be determined using the same method Tproc _MS.

According to the embodiment of the present invention, for the FDD downlink mode, the feedback time of the terminal is determined according to the terminal processing time and the transmission time interval, thereby ensuring that the terminal completes the HARQ feedback in the fastest time, avoiding the waiting time of the feedback being too long, and improving. The speed of HARQ feedback.

Fourth embodiment.

The fourth embodiment is applied to the time when the terminal processes the data TprocMS and the time when the base station processes the data TprocBS is a fixed value or an indeterminate value, and is a scene of the FDD mode. In the uplink HARQ timing, there are F subframes in one frame of the system, the base station transmits A-MAP information in the second downlink subframe of the ith frame, and the terminal transmits data in the mth uplink subframe of the jth frame. The packet, the base station then sends feedback information in the first downlink subframe of the kth frame, and the terminal transmits the retransmission data packet on the yth uplink subframe of the pth frame. The frame number and subframe number when uplink HARQ transmission and feedback can be calculated by Table 5 and Equation (6) and Equation (7):

0, ceil( /2)-l>r _roc

1, other

0, floor(F /2)-Ν _ΊΤΙ ≥Τ

1, other

Table 5 where N _TTI represents the number of subframes corresponding to the _{TTI of the} data packet, ^ ^σ ^( ^Χ ) represents the largest integer less than or equal to X, and c / (x) represents the smallest integer greater than or equal to X. The Tproc in the formula (6) represents the time Tproc _{MS of the} terminal processing data, and the Tproc in the formula 7 refers to the time Tproc _{BS in} which the base station processes the data, and the two times may be equal or unequal, and the fourth embodiment merely cites an example. , When the time period the terminal processing data Tproc _MS or base station processes data Tproc _BS is a fixed value, may be determined base station processes the data according to the number of subframes system one frame time Tproc _BS and the terminal processing data time Tproc _MS, e.g. The time TprocBS at which the base station processes the data and the time Tproc _{MS at which the} terminal processes the data can be calculated by the above formula (3) and formula (4). When each frame includes 6 or 7 sub-frames, Tproc=2 is calculated by formula (3) and formula (4); when each frame includes 8 sub-frames, the formula is passed. (3) and formula (4) calculate Tproc=3.

In addition, the fourth embodiment is an example in the FDD mode. For the TDD mode, the time Tproc _{BS for} processing data by the corresponding base station or the time Tproc _{MS for} processing data by the terminal can also determine the time Tproc _{BS for} processing data by the base station in the same manner. Or the time at which the terminal processes the data Tproc

The base station may send the first indication signaling in a control channel or a control message of the communication system, where the control channel includes a super frame header or an A-MAP channel, where the time TprocMS of the terminal processing data is not a fixed value, The control message includes a capability negotiation message or a registration message, or the terminal may send the second indication signaling in the capability negotiation message or the registration message of the communication system, where the first indication signaling and the second indication signaling are used to indicate that the base station processes the data. The value of the time Tproc _BS .

For example, as shown in Tables 2 and 3 above, the 1-bit indication signaling TBS and TMS respectively indicate the time Tproc _{BS at which the} base station processes data and the time Tproc _{MS at which the} terminal processes data. In addition, the fourth embodiment is an example in the FDD mode. For the TDD mode, the Tproc _BS or the Tproc _MS can be determined in the same manner as long as there is a corresponding Tproc _BS or Tproc _MS .

According to the embodiment of the present invention, for the FDD uplink mode, the feedback time of the base station is determined according to the time and the transmission time interval of the data processing by the base station, thereby ensuring that the base station completes the HARQ feedback in the fastest time, and avoids the waiting time of the feedback being too long. Increases the speed of HARQ feedback.

Fifth embodiment.

The fifth embodiment is applied to the time when the terminal processes the data Tproc _MS and the time when the base station processes the data TprocBS is a fixed value or an indeterminate value, and is a scenario of the FDD mode.

In the FDD downlink mode, there are F subframes in one frame of the system, the base station transmits a data packet on the mth downlink subframe of the i-th frame, and the terminal sends feedback information in the nth uplink subframe of the j-th frame. The frame number and sub frame number at the time of sending feedback can be calculated by the following formula (8) and formula (9):

j = i + floor {ceil {F / 2 + m) / F) + z ( ₈ ) n = ceil(F / 2 + m) mod F ( ₉ ) z ₌ / 2) - N _ITI ≥T _proc

Where ^{Z is}

, is the value of TTI, represents the largest integer less than or equal to x, and c / (x) represents the smallest integer greater than or equal to X. Tproc represents the time TprocMS for the terminal to process data. The fifth embodiment is just an example. The value of this parameter can also take other values.

When the time period the terminal processing data Tproc _MS or base station processes data Tproc _BS is a fixed value, may be determined base station processes the data according to the number of subframes system one frame time Tproc _BS and the terminal processing data time Tproc _MS, e.g. , Tproc _BS and Tproc _MS can be calculated by Equation 3 and Equation (4) above. When the number of sub-frames included in each frame is 6 or 7, Tproc=2 is calculated by formula (3) and formula (4); when the number of sub-frames included in each frame is 8, (3) and formula (4) calculate Tproc=3. In addition, the fifth embodiment is an example in the FDD mode. For the TDD mode, the time Tproc _{BS for} processing data by the corresponding base station or the time Tproc _{MS for} processing data by the terminal can also determine the time Tproc _{BS for} processing data by the base station in the same manner. Or the time at which the terminal processes the data TprocMS - when the terminal processes the data TprocMS is a non-fixed value, the base station may send the first indication signaling in the control channel or control message of the communication system, where the control channel includes a super frame header Or the A-MAP channel, the control message includes a capability negotiation message or a registration message, or the terminal may send the second indication signaling in the capability negotiation message or the registration message of the communication system, where the first indication signaling and the second indication are The signaling is used to indicate the value of the time Tproc _MS at which the terminal processes the data.

For example, as shown in Tables 2 and 3 above, the 1-bit indication signaling TBS and TMS respectively indicate the time Tproc _{BS at which the} base station processes data and the time Tproc _{MS at which the} terminal processes data.

In addition, the fifth embodiment is an example in the FDD mode. For the TDD mode, the time Tproc _{BS for} processing data by the corresponding base station or the time Tproc _{MS for} processing data by the terminal can also determine the time Tproc _{BS for} processing data by the base station in the same manner. Or the time at which the terminal processes the data

TprocMS - sixth embodiment.

The sixth embodiment is applied to the time when the terminal processes the data Tproc _MS and the time when the base station processes the data TprocBS is a fixed value or a non-fixed value, and is a scene of the TDD mode.

In downlink HARQ timing, there are F subframes in one frame of the system, and the base station transmits a data packet on the mth downlink subframe of the i-th frame, and the terminal transmits the inverse in the n-th uplink subframe of the j-th frame. Feed information. Where z is the location where the packet starts when the packet with TTI greater than 1 is located, not the location where the A-MAP IE appears, and the value is always equal to 0. The corresponding A-MAP IE of the packet appears in the previous one. The second downlink subframe of the frame is between the first subframe of the current frame. Z refers to the location where the packet starts and the location where the A-MAP IE appears for packets with ΓΓΙ equal to 1. The frame number and subframe number of the downlink HARQ transmission feedback can be calculated by Table 6 and Equation (10) and the parameter K:

Table 6

Where D is the number of downlink subframes in a frame, and U is the number of uplink subframes in one frame, and F is the number of subframes in one frame, that is, F=D+U, ^^^(^ indicates less than or equal to The largest integer of X, c / (x) represents the smallest integer greater than or equal to X.; K is defined as follows:

If D + U is odd and D is less than U/ΝΑ-ΜΑΡ, then when D is greater than or equal to U: Κ = ceil((DU)/2), otherwise, when D is less than U: K = -ceil((UD) /2);

If the condition D + U is not satisfied, the number is odd and D is less than

Then when D is greater than or equal to U: Κ = -floor((DU)/2), otherwise, when D is less than U: K = -floor ((UD)/2); Where ^m is the value of TTI, and Tproc refers to the time Tproc _MS of the terminal processing data. This embodiment only cites an example, and the value of this parameter may take other values.

In addition, when the N _{TTI is} greater than 1 and m is not equal to 0, in the TDD downlink mode, the base station sends a data packet in the 0th downlink subframe of the i+1th frame, and the terminal is in the nth uplink of the jth frame. The subframe transmits feedback information; where j=(i+z+l) mod4, Mod represents a modulo operation.

When the time period the terminal processing data Tproc _MS or base station processes data Tproc _BS is a fixed value, may be determined base station processes the data according to the number of subframes system one frame time Tproc _BS and the terminal processing data time Tproc _MS, e.g. , Tproc _BS and Tproc _MS can be calculated by the above formula (3) and formula (4). When the number of sub-frames included in each frame is 6 or 7, Tproc=2 is calculated by formula (3) and formula (4); when the number of sub-frames included in each frame is 8, (3) and formula (4) calculate Tproc=3. In addition, the fifth embodiment is an example in the TDD mode. For the FDD mode, the Tproc _BS or the Tproc _MS can be determined in the same manner as long as there is a corresponding Tproc _BS or Tproc _MS .

When the time Tproc of the terminal processing data is not a fixed value, the base station may send the first indication signaling in a control channel or a control message of the communication system, where the control channel includes a super frame header or an A-MAP channel, The control message includes a capability negotiation message or a registration message, or the terminal may send the second indication signaling in the capability negotiation message or the registration message of the communication system, where the first indication signaling and the second indication signaling are used to instruct the terminal to process the data. The value of the time Tproc _MS .

For example, as shown in Tables 2 and 3 above, the time Tproc _{BS for} processing data by the base station and the time Tproc _{MS for} processing data by the terminal may be indicated by 1-bit indication signaling TBS and TMS, respectively. Further, the fifth embodiment is an example in TDD mode, corresponding to the FDD mode, as long as there is a corresponding Tproc _BS or Tproc _MS or Tproc _BS can be determined using the same method Tproc _MS.

According to the embodiment of the present invention, for the TDD downlink mode, the terminal processing time and the transmission time interval are used to determine the feedback time of the terminal, thereby ensuring that the terminal completes the HARQ feedback in the fastest time, avoiding the waiting time of the feedback being too long, and improving the HARQ. The speed of feedback.

Seventh embodiment.

The seventh embodiment 7 is applied to the time when the terminal processes the data TprocMS and the time when the base station processes the data TprocBS is a fixed value or an indeterminate value, and is a scene of the TDD mode. Wherein the processing time required when the terminal transmits data, ^ ^ s data is transmitted to the terminal when the terminal ⁷ receives the data, ^ ^ s terminal transmits ACK / NACK feedback time when data is received

^Tpr0C MS_RE . When the base station transmits data, ^ the processing time required for the base station to send data

^T P ^roc B _S — _TR , when the base station receives data, ^ is the time when the base station receives the data and then sends the feedback ACK/NACK, or when the base station receives the data, the time when the base station processes the data ^Tpr0CBS is sent by the base station after receiving the data. Feedback ACK/NACK and control messages

(such as A-MAP IE) time ^Tpr0C Bs-RE2.

In the uplink HARQ timing, there are F subframes in one frame of the system, the base station transmits A-MAP information in the second downlink subframe of the ith frame, and the terminal transmits data in the mth uplink subframe of the jth frame. The packet, the base station then sends feedback information in the first downlink subframe of the kth frame, and the terminal transmits the retransmission data packet on the yth uplink subframe of the pth frame. The frame number and subframe number at the time of uplink HARQ transmission and feedback can be calculated by the definitions of Table 7, Equation (11), Equation (12), and parameter K:

(uplink transmission) 0≤1<K

m = K≤l<U + K

U + K ≤ l < D

For 1 <ceil(D/N _A-MAP )<U,

0, ··· Ul, s ^-lK + N _A _ _MAP -\, 1 = 0

m = l K is l K + N _A — _MAP i, 0 < / < / _n

Ι—κ,ι—κ+ι, ··· U-l, 1 = 1

/max = NA-MAP- (ceil(D/N _A -MAp)

For ceil(D/ NA-MAP) = 1

m = 0, 1, ... , U-1 when / = 0

HARQ feedback

q = l k = (j+l+w) mod 4

(downlink transmission)

HARQ sub-packet retransmission

y=m p = (k+v) mod 4

(uplink transmission)

Table 7

0, c \(F/2)-l≥T _proc

1, other

(11)

0, floor( /2)-N _m ≥T _f

w :

Other

(12) where D is the number of downlink subframes in a frame, and U is the number of uplink subframes in one frame, and F is the number of subframes in one frame, that is, F=D+U, ^^^(^ Represents the largest integer less than or equal to X, c / (x) represents the smallest integer greater than or equal to X; K is defined as follows:

If the condition D + U is not satisfied and D is less than U/ΝΑ-ΜΑΡ, then when D is greater than or equal to U: Κ = -floor((DU)/2), otherwise, when D is less than U: K = -floor ((UD)/2).

Where N _TT ^ is the number of subframes corresponding to the transmission time interval TTI of the data packet, Tproc in Equation 11 refers to the time at which the terminal processes the data, and Tproc in Equation 12 refers to the base station. When the data is processed, the two times can be equal or unequal. This embodiment is just an example. The values of the two parameters can also take other values.

When the time period the terminal processing data Tproc _MS or base station processes data Tproc _BS is a fixed value, may be determined base station processes the data according to the number of subframes system one frame time Tproc _BS and the terminal processing data time Tproc _MS, e.g. , Tproc _BS and Tproc _MS can be calculated by the above formula (3) and formula (4). When the number of sub-frames included in each frame is 6 or 7, Tproc=2 is calculated by formula (3) and formula (4); when the number of sub-frames included in each frame is 8, (3) and formula (4) calculate Tproc=3. Further, the present example is an example in the TDD mode, for the FDD mode, as long as _{the BS} or corresponding Tproc Tproc _{the MS} or _{the BS} may determine Tproc same way Tproc

When the time at which the terminal processes the data is 1 "0" (3⁄4 ₁₈ is a non-fixed value, the base station may send the first indication signaling in a control channel or a control message of the communication system, where the control channel includes a super frame header or A The MAP channel, the control message includes a capability negotiation message or a registration message, or the terminal may send the second indication signaling, the first indication signaling and the second indication signaling, in the capability negotiation message or the registration message of the communication system. The value of the time Tproc _Ms used to indicate the data processing by the terminal.

When the time TprocMs of the data processing by the base station is not a fixed value, the base station may send the third indication signaling in a control channel or a control message of the communication system, where the control channel includes a super frame header or an A-MAP channel, The control message includes a capability negotiation message or a registration message. The third indication signaling is used to indicate the value of the time TprocMs of the base station processing data.

For example, as shown in Tables 2 and 3 above, the time Tproc _{BS for} processing data by the base station and the time Tproc _{MS for} processing data by the terminal may be indicated by 1-bit indication signaling TBS and TMS, respectively. Another Bu Xi, the present example is an example in the TDD mode, for the FDD mode, as long as there is a corresponding TprocMs or Tproc _MS Tproc _BS or can be determined by the same method Tproc _MS.

According to the embodiment of the present invention, for the TDD uplink mode, the time when the data is processed by the base station may be used. The inter- and transmission time interval is used to determine the feedback time of the base station, thereby ensuring that the base station completes the HARQ feedback in the fastest time, avoiding the waiting time of the feedback being too long, and improving the speed of the HARQ feedback.

In summary, according to the embodiment of the present invention, the feedback moment is determined according to at least one of the time when the terminal processes the data, the time when the base station processes the data, the transmission time interval, and the protection time, thereby ensuring that the terminal or the base station is in the fastest time. The HARQ feedback is completed, the waiting time of the feedback is avoided, and the speed of the HARQ feedback is improved.

According to an embodiment of the present invention, a timing device for HARQ is also provided.

Figure 6 is a schematic illustration of an embodiment of a HARQ timing device of the present invention. As shown in FIG. 6, the calculation module 602 and the sending module 604 are included, where

The calculating module 602 is configured to determine a feedback moment according to the predetermined parameter, where the predetermined parameter includes at least one of: a time when the terminal processes the data, a time when the base station processes the data, a transmission time interval, and a protection time;

The sending module 604 is configured to send a feedback message of the hybrid automatic repeat request at the determined feedback moment.

In the FDD downlink mode, a fixed feedback subframe number is not set for the data sent by a certain subframe, and the feedback time is determined according to at least one of the terminal processing time, the TTI, and the guard time, so that the terminal only needs to complete the data packet. Processing can be sent without waiting for a fixed frame number to appear, thereby shortening the HARQ feedback time and improving the speed of HARQ feedback.

It is assumed that the Tproc _MS indicates the time at which the terminal processes the data. The time for processing the data by the terminal may be fixed according to different situations, or may be changed according to the situation of the terminal and the base station. On this basis, if there are F subframes in one frame of the system and the base station sends a data packet on the mth downlink subframe of the ith frame, the terminal only needs to wait for a specific time Delay to perform feedback, instead of Need to wait for a fixed subframe number to appear. According to the embodiment of the present invention, if the terminal sends feedback information in the nth uplink subframe of the jth frame, the calculation module 602 can calculate the frame number j and the subframe number n when the feedback is performed by using formulas (1) and (2). : Preferably, the Delay can be calculated by the formula (3).

When the Tproc _MS or the TprocBs is a fixed value, the time TprocBs of the base station processing data and the time TprocMS of the terminal processing data may be determined according to the number of subframes of one frame in the system, for example, determining TprocBs according to the number of subframes in one frame. The time TprocMS at which the terminal processes the data, as shown in equations (4) and (5).

In addition, this example is an example in FDD mode. For TDD mode, Tproc _BS or Tproc _MS can be determined in the same way as long as there is a corresponding Tproc _BS or Tproc _MS .

When the time Tproc _MS of the terminal processing data is not a fixed value, the base station may send the first indication signaling in a control channel or a control message of the communication system, where the control channel includes a super frame header or an A-MAP channel. The control message includes a capability negotiation message or a registration message, or the terminal may send the second indication signaling in the capability negotiation message or the registration message of the communication system, where the first indication signaling and the second indication signaling are used to indicate the terminal processing. The value of the data Tproc _MS .

When the time Tproc _BS of the data processing by the base station is a non-fixed value, the base station may send the third indication signaling in a control channel or a control message of the communication system, where the control channel includes a super frame header or an A-MAP channel. The control message includes a capability negotiation message or a registration message. The third indication signaling is used to indicate the value of the time Tproc _BS that the base station processes the data.

According to the embodiment of the present invention, for the FDD downlink mode, the feedback time of the terminal is determined according to at least one of the terminal processing time, the transmission time interval, and the protection time, thereby ensuring that the terminal completes the HARQ feedback in the fastest time and avoids the feedback. The waiting time is too long, which improves the speed of HARQ feedback.

It should be noted that the steps shown in the flowchart of the accompanying drawings may be executed in a computer system such as a set of computer executable instructions, and, although the logical order is shown in the flowchart, However, in some cases, the steps shown or described may be performed in an order different than that described herein. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device, or they may be separately fabricated into individual integrated circuit modules, or they may be Multiple modules or steps are made into a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software.

The above is only the preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. within the spirit and scope of the invention are intended to be included within the scope of the invention.

Claims

Claim

A timing method for hybrid automatic repeat request, which is characterized by comprising:

Tproc _MS , time at which the base station processes data Tproc _BS , transmission time interval TTI, and guard time P.

The timing method according to claim 1, wherein the determining the feedback moment according to the predetermined parameter comprises:

Calculate the frame number j of the feedback moment and the subframe number n: j = i + floor ((Delay + m) / ); n = (Delay + m) mod F; where, . Indicates the largest integer less than or equal to χ; Delay is equal to the value of any one of the time Tproc _MS , the transmission time interval TTI, and the guard time P of the terminal processing data, or the sum of any two values, or the sum of the three; To protect the time, it is used to reserve a certain redundancy time;

F is the number of subframes included in one frame;

In the frequency division duplex FDD mode, the base station sends a data packet on the mth downlink subframe of the i-th frame;

In the FDD mode, the terminal transmits the feedback message in the nth uplink subframe of the jth frame.

Calculate the frame number j of the feedback moment and the subframe number n: ceiliin + F / 2)

j = (ί + floor(—— -) + z) mod 4

F ; n = ceil{m + / 2) mod F . ceil( 12) - N _TTI > Tproc

among them,

Other, ^oor ( ^x ) represents the largest integer less than or equal to χ, 7 (x) represents the smallest integer greater than or equal to X; equal to the number of subframes corresponding to the TTI, used to represent the value of the TTI; Mod represents modulo Operation

F is the number of subframes included in one frame;

In the FDD mode, the base station transmits a data packet on the mth downlink subframe of the i-th frame; in the FDD mode, the terminal sends the feedback information in the nth uplink subframe of the j-th frame.

The timing method according to claim 1, wherein the determining the feedback moment according to the predetermined parameter comprises: k =

Q— l . floor{F 1 2) - N _m ≥ Tproc _MS

among them,

Other, Χ ^χ ) represents the largest integer less than or equal to x; ^ ⁷⁷⁷ is equal to the number of subframes corresponding to the ΤΤΙ, used to represent the value of the ΤΤΙ; Mod represents the modulo operation;

F is the number of subframes included in one frame;

The terminal sends a data packet on the mth uplink subframe of the jth frame;

In the FDD mode, the base station sends the feedback information in the first downlink subframe of the kth frame; in the FDD mode, the base station sends the A-MAP information in the Zth downlink subframe of the i-th frame.

The timing method according to claim 4, wherein the determining the feedback moment according to the predetermined parameter further comprises: Cei\(l + F/2)

P k + floor + v mod 4

F y = m

Represents the most r equal to or less than χ, and 7(x) represents the smallest integer greater than or equal to x;

In the FDD mode, the terminal sends retransmission data on the yth uplink subframe of the pth frame.

ι+ floor] —— \ + v mod 4

{ F

j = i + floor(ceil(F /2 + m)/F) + z. n = ceil(F /2 + m) mod F .

0, ceil( 12) - N _m > Tproc ^ MS

. rW means the most

a large integer, 7(x) represents a minimum integer greater than or equal to X; a number of subframes corresponding to the ΤΉ, used to represent the value of the TTI; Mod represents a modulo operation;

F is the number of subframes included in one frame;

The timing method according to claim 1, wherein the determining the feedback moment according to the predetermined parameter comprises: j = (i + z) mod 4 ·

Or, n = m - k , when 0 ≤ 11;

0, ceil( 12) - N _m ≥ Tproc MS

^1? Others, the number of subframes corresponding to the TTi, used to represent the value of the TTI; Mod represents a modulo operation, representing a maximum integer less than or equal to X, and 7(x) represents a minimum integer greater than or equal to X;

Where D is the number of downlink subframes included in one frame, U is the number of uplink subframes included in one frame, and F is the number of subframes included in one frame, F=D+U;

If (D + U) is odd and D is less than U/N _A _ _MAP , when D is greater than or equal to U: K = ceil((DU)/2), when D is less than U: K = -ceil((UD) /2); Otherwise, when D is greater than or equal to U: K=-floor((DU)/2), when D is less than U: K= -floor ((UD)/2);

In the TDD mode, the base station transmits a data packet on the mth downlink subframe of the i-th frame, where m II I, or _m = [ + N _A - _MAP -l, Z refers to the occurrence of the A-MAP IE Position, the value range is 0 to D-1;

In the TDD mode, the terminal transmits feedback information in the nth uplink subframe of the jth frame.

j = ( + z) mod 4 ·

Or, n = m - k , when 0 ≤ 11; 0, ceil( 12) - N _m ≥ Tproc MS

When D is less than U: K = -ceil((U-D)/2), otherwise, when D is greater than or equal to U: K = floor((D-U)/2);

In the TDD mode, the base station transmits a data packet on the mth downlink subframe of the i-th frame, where m II I, or m = l + N, _ _MAP -1 , ^Z refers to the location where the A-MAPIE appears. ;

The timing method according to claim 7 or 8, wherein when the _{NTTI is} greater than 1 and/or not equal to 0, in the TDD downlink mode, the base station is in the 0th downlink of the (i+1)th frame. The subframe transmits the data packet, and the terminal sends the feedback information in the nth uplink subframe of the jth frame;

Where j = (i + z + l) mod4, Mod represents the modulo operation.

j = (i+v) mod 4;

When ceil(D/N _A-MA P)>U;

[θ,■■■ Ul, ^-lK + N _A _ _MAP -l, 1 = 0

m = l K is l K + N _A — _MAP i, 0 < / < / _n

Ι-κ,ι-κ+ι, - U-l, 1 = 1

Or, when 1 <ceil(D/N _A-MAP )<U, and /max = N _A- MAp-(ceil(D/N _A- MAp) -1);

Or, m = 0, 1,..., U-1, when ceil(D/NA-MAP) = 1 and / = 0; Where D is the number of downlink subframes in a frame, and U is the number of uplink subframes in one frame, and F is the number of subframes in one frame, that is, F=D+U, ^^ ^f ( ^x ) indicates less than The largest integer equal to X, ^{c /} ( ^x ) represents the smallest integer greater than or equal to X; Z refers to the position where the A-MAP IE appears;

If (D + U) is odd and D is less than U/N _{AJ IAP} , when D is greater than or equal to U: K = ceil((DU)/2) , when D is less than U: K = -ceil((UD)/ 2); Otherwise, when D is greater than or equal to U: K = -floor((DU)/2), when D is less than U: K = -floor ((UD)/2);

k = (j+l+w) mod 4;

q = l .

0, floor{F 1 2) - N _m > Tproc MS

^! 'Others, equal to the number of subframes corresponding to the TTi, used to represent the value of the ΤΉ; Mod represents a modulo operation;

p = (k+v) mod 4;

y=m;

v ≥T _proc

Where ^V

;

F is the number of subframes included in one frame, representing the largest integer less than or equal to X; in TDD mode, the terminal transmits a data packet on the mth uplink subframe of the jth frame; in the TDD mode, the base station is in the The first downlink subframe of the k frame sends the feedback information; in the TDD mode, the base station sends retransmission information in the yth uplink subframe of the pth frame; in the TDD mode, the base station is in the ith frame The Zth downlink subframe transmits A-MAP information.

j = (i+v) mod 4; 0, 0≤1<K

m l-K, K≤l<U + K

U-\, U + K≤l<D when ceil(D/N _A-MAP )≥U;

0, ··· Ul, l K + N _A — _MAP i, 1 = 0

m = ί-Κ 者 K + N _A — _MAP -l, 0</</ _max

Or, when 1 <ceil(D/N _A-MAP )<U, and /max = N _A- MAp-(ceil(D/N _A- MAp) -1);

Or, m = 0, 1, U-1, when ceil(D/NA-MAP) = 1 and / = 0;

Where D is the number of downlink subframes in a frame, and U is the number of uplink subframes in one frame, and F is the number of subframes in one frame, that is, F=D+U, ^^^( ^χ ) indicates less than The largest integer equal to X, ^{c /} ( ^x ) represents the smallest integer greater than or equal to X; Z refers to the position where A-MAPIE appears;

k = (j+l+w) mod 4;

q = l .

0, floor(F 12) - N _m > Tproc MS

p = (k+v) mod 4;

y=m; where, ^V —

other;

F is the number of sub-frames included in a frame, ^. . ^r ( ^x ) represents a maximum integer less than or equal to X; in the TDD mode, the terminal transmits a data packet on the mth uplink subframe of the jth frame; in the TDD mode, the base station is in the first downlink subframe of the kth frame Sending the feedback information; in the TDD mode, the base station sends retransmission information in the yth uplink subframe of the pth frame; In the TDD mode, the base station transmits Α-ΜΑΡ information in the second downlink subframe of the ith frame.

The timing method according to any one of claims 2 to 11, wherein when the time Tproc _{MS of} the terminal processing data and/or the time Tproc _BS of the base station processing data is a fixed value, the method further include:

The time TprocMS at which the terminal processes the data and/or the time Tproc _{BS at which the} base station processes the data is determined according to the number of subframes included in one frame in the system.

The timing method according to claim 12, wherein the determining the time Tproc _{MS for} processing data by the terminal and/or the time Tproc _{BS for} processing data by the base station according to the number of subframes included in one frame in the system includes:

Tproc _MS = floor((x -α) / 2) + 2, 0 < α < 8 .

Tproc _BS = floor χ -b) / 2) + 2, 0 ≤ b ≤ ^, where χ is the number of subframes included in one frame in the system; represents the largest integer less than or equal to X.

The timing method according to any one of claims 2 to 11, wherein when the time Tproc _MS of the terminal processing data is an unfixed value, the method further includes:

And indicating, according to the indication signaling, a size of a time Tproc _MS that the terminal processes data, where the indication signaling is one or more bits.

The timing method according to claim 14, wherein the base station sends the indication signaling in a control channel or a control message of the communication system;

The control channel includes a superframe header or an A-MAP channel, and the control message includes a capability negotiation message or a registration message.

The timing method according to claim 14, wherein the terminal transmits the indication signaling in a capability negotiation message or a registration message of the communication system.

The timing method according to any one of claims 2 to 11, wherein when the time Tproc _BS of the data processing by the base station is an unfixed value, the method further includes: And indicating, according to the indication signaling, a size of a time Tproc _BS that the base station processes the data, where the indication signaling is one or more bits.

The timing method according to claim 17, wherein the base station sends the indication signaling in a control channel or a control message of the communication system;

The timing method according to any one of claims 1 to 11, wherein when the terminal transmits data, the time ^TpWCMS of the terminal processing data is a processing time required for the terminal to transmit data ^{^^^^} , When the terminal receives data, the time at which the terminal processes the data is the time ^{Tpwc Ms_RE} at which the terminal sends the feedback ACK/NACK after receiving the data.

20, 19 a timing method according to any one of the claims 1 to 11, or, wherein, when the base station transmits data, the base station ^ time processing data processing time required to transmit data at the base station ^ ⁷ Time when the base station processes data when the base station receives data

^Tproc Bs is the time Tpwc _{BS REl} at which the base station receives the feedback ACK/NACK after receiving the data.

The timing method according to claim 20, wherein when the base station receives the data, the time at which the base station processes the data is the time Tproc _{BS RE2} at which the base station receives the data and sends the feedback ACK/NACK and the control message.

The timing method according to claim 21, wherein the determining, according to the number of subframes included in one frame in the system, the time Tproc _{MS of} the terminal processing data and/or the time Tproc of the base station processing data _{The BS} includes:

^T P ^roc M _S _TR = fl or((x -α1)/2) + 2,0 < α1 < 8 . and, or,

Tproc _{MS m} = floor((x -a2)/2) + 2,0 < «2 <8; and/or, Tproc _{BS TR} =^r((x- )/2) + 2,0<<8. and, or,

Tproc _{BS REl} = floor((x-b2) /2) + 2,0<1⁄2<8; and/or, Tproc _{BS RE2} = floor((x -W)/2) + 2,0<1⁄2 <8; Where x is the number of subframes included in one frame in the system; represents the largest integer less than or equal to X.

A timing device for a hybrid automatic repeat request, comprising: a calculating module, configured to determine a feedback moment according to a predetermined parameter, wherein the predetermined parameter comprises at least one or a combination of: a time at which the terminal processes data The time at which the base station processes data, the transmission time interval, the number of subframes included in one frame, and the guard time;

a sending module, configured to send a feedback of the hybrid automatic repeat request at the determined feedback moment

The timing device according to claim 23, wherein the calculation module calculates the frame number j and the subframe number n when the feedback is performed by the following formula:

j = i + floor((Delay + m) / F);

n = (Delay + m) mod F;

among them, . Represents the largest integer less than or equal to χ,

Indicates the smallest integer greater than or equal to X; Delay is equal to the value of any one of the time Tproc _MS , the transmission time interval ΤΉ, and the guard time P of the terminal processing data, or the sum of any two values, or the sum of the three; To protect the time, it is used to reserve a certain redundancy time;

F is the number of subframes included in one frame;

25. A timing method for hybrid automatic repeat request, which is characterized by: Determining a feedback moment according to the predetermined parameter, and sending a feedback message of the hybrid automatic repeat request at the determined feedback moment;

The predetermined parameter includes at least one or a combination of: a time for processing data Tproc, a transmission time interval ΤΉ, and a protection time P;

The timing method according to claim 25, wherein the time Tproc of processing data includes a time Tproc _{MS for} processing data by the terminal, and/or a time Tproc for processing data by the base station.

The timing method according to claim 26, wherein when the terminal transmits data, the time ^Tpr0CMS of the terminal processing data is a processing time required for the terminal to transmit data.

^{TPWC _{MS_TR?}} Data is received at the terminal, the terminal transmits the time processing data ^^^^ ACK / NACK feedback time ^Tpwc Ms-RE to the terminal after receiving the data.

The timing method according to claim 26, wherein when the base station transmits data, the time when the base station processes the data is the processing time required for the base station to transmit data. ⁷ ^ When the base station receives data, the base station Time to process data

The timing method according to claim 28, wherein when the base station receives the data, the time at which the base station processes the data is the time Tproc _{BS RE2} at which the base station receives the data and sends the feedback ACK/NACK and the control message.

The timing method according to claim 29, wherein the determining the time Tproc of the processing data according to the number of subframes included in one frame in the system.

The timing method according to claim 30, wherein the processing data The time Tproc includes a time Tproc _{MS at} which the terminal processes the data and/or a time Tproc _BS at which the base station processes the data, and the time for determining the processed data according to the number of subframes included in one frame in the system includes:

^T P ^roc M _S _TR = fl or x -α1)/2) + 2,0<α1<8. and, or, Tproc _{MS m} = floor((x -a2)/2) + 2,0 < «2 <8; and / or,

Tproc _{BS TR} =^r((x- )/2) + 2,0<<8. and, or,

Tproc _{BS REl} = floor((x-b2) /2) + 2,0<1⁄2<8; and/or,

Tproc _{BS RE2} = floor((x -W)/2) + 2,0<1⁄2 <8; where x is the number of subframes included in one frame in the system;