CN101997663A - Timing method and device of hybrid automatic repeat request (HARQ) - Google Patents

Timing method and device of hybrid automatic repeat request (HARQ) Download PDF

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Publication number
CN101997663A
CN101997663A CN2009101668565A CN200910166856A CN101997663A CN 101997663 A CN101997663 A CN 101997663A CN 2009101668565 A CN2009101668565 A CN 2009101668565A CN 200910166856 A CN200910166856 A CN 200910166856A CN 101997663 A CN101997663 A CN 101997663A
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frame
tproc
sub
feedback
time
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CN101997663B (en
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宁丁
关艳峰
刘向宇
刘颖
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ZTE Corp
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ZTE Corp
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Priority to PCT/CN2009/076282 priority patent/WO2011022920A1/en
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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
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1848—Time-out mechanisms
    • H04L1/1851—Time-out mechanisms using multiple timers
    • 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
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1854—Scheduling and prioritising arrangements
    • 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]

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  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a timing method and device of a hybrid automatic repeat request (HARQ), wherein the method comprises the following steps: determining the feedback time according to the preset parameters, and then, sending a feedback message of the HARQ at the feedback time, wherein the preset parameters comprise at least one of time TprocMS of terminal processing data, time TprocBS of base station processing data, transmission time interval (TTI) and protective time P, thereby ensuring that a terminal or a base station can finish the HARQ feedback in a shortest time, preventing the waiting time of the feedback from being too long, and improving the speed of the HARQ feedback.

Description

The timing method of HARQ and device
Technical field
The present invention relates to the communications field, in particular to timing method and the device of a kind of HARQ.
Background technology
Mix automatic repeat requests (Hybrid Automatic Repeat Request abbreviates HARQ as) technology and be improvement to the automatic repeat requests of tradition (Automatic Repeat Request abbreviates ARQ as) technology.The HARQ technology combines ARQ technology and forward error correction (FEC) technology, and then becomes fading channel when having reduced to receiving the influence of error rates of data, makes wireless communication system can provide higher more stable data to handle up.HARQ is one of the key technology of the 4G system (for example, Long Term Evolution (Long-Term Evolution abbreviates LTE as) system and IEEE 802.16m system) of present main flow.
In Frequency Division Duplexing (FDD) (Frequency Division Duplex abbreviates FDD as) system, uplink/downlink can transmit data or signal simultaneously.Because the system delay that causes of system link structure, and the data load on the flexible allocation uplink/downlink further is divided into the littler subframe of a plurality of time granularities with a radio frames usually in order to reduce.Wherein, the shared number of sub frames (being time length) of packet is TTI (TransmissionTime Interval).For example, in wireless frame structure shown in Figure 1, a radio frames is divided into 8 subframes, the principle that increases progressively is in order carried out serial number to all radio frames, is called for short frame number, as shown in Figure 1,8 subframes are expressed as SF0-SF7, and wherein, up link has identical frame structure with down link.
For a descending HARQ process, the one or more subframes on the down link are assigned to this HARQ process, are used to carry data channel, and correspondingly, the one or more subframes on the up link also are assigned to this HARQ process, are used to carry feedback channel.Equally, for an ascending HARQ process, the one or more subframes on the up link are assigned to this HARQ process, be used to carry data channel, correspondingly, the one or more subframes on the down link also are assigned to this HARQ process, are used to carry feedback channel.For example, for an ascending HARQ process, the one or more sub-frame of uplink on the up link are used to carry data channel, and correspondingly, the one or more descending sub frames on the down link are used to carry the feedback channel corresponding with data channel.
Receiving terminal is after receiving the data that data channel carries, need certain processing time could determine the feedback signal corresponding (this feedback signal is carried on the feedback channel) with data, wherein, processing time is called the reception processing delay, and feedback channel is carried on the corresponding subframe by the predetermined mapped relation.
At time division duplex (Time Division Duplex, abbreviate TDD as) in the system, for wireless communication system based on OFDM or OFDMA, its Radio Resource mapping main frame structure and resource structures according to this wireless communication system, frame structure is described the control structure of Radio Resource on time domain, and resource structures has been described the control structure of Radio Resource on frequency domain.Frame structure is divided into Radio Resource the unit of different brackets on time domain, as superframe (Superframe), frame (Frame), subframe (Subframe) and symbol (Symbol), by being set, different control channel (for example, broadcast channel, clean culture and Multicast Channel etc.) realizes scheduling controlling.
For example, as shown in Figure 2, Radio Resource is divided into superframe on time domain, each superframe comprises 4 frames, each frame comprises 8 subframes, subframe is made up of 6 basic OFDMA symbols, and what OFDMA symbols are the factors such as circulating prefix-length of bandwidth that real system is supported as required and/or OFDMA symbol determine specifically to comprise in each grade unit in the frame structure.Wherein can comprise several downlink subframe and descending sub frame in each frame, the packet that sends at descending sub frame sends to terminal by the base station, and terminal is carried out the HARQ feedback by sub-frame of uplink again; Equally, the packet that sends at sub-frame of uplink sends to the base station by terminal, and the HARQ feedback is carried out by descending sub frame again in the base station.
In addition, system is provided with broadcast channel (owing to be positioned at the superframe head, being also referred to as superframe head (Superframe Header)) in can first descending sub frame in superframe and sends system information such as resource mapping; And system can also be provided with clean culture and/control channel of multicast character sends scheduling control informations such as resource allocation.Simultaneously, can also there be A-MAP (AdvancedMAP) channel in system, the A-MAP channel is positioned on the descending sub frame, transmit the service control information, at least can comprise Non user-specific A-MAP, HARQ feedback A-MAP, Power control A-MAP, one of control informations such as Assignment A-MAP or combination in any.Broadcast channel (superframe head) and A-MAP (Advanced MAP) channel can be called control channel again.
In present correlation technique, though computed HARQ formula regularly goes for various situations, and do not need big quantity space storage, but present formula is perfect inadequately to the processing under some situation, for example, under the FDD downlink mode, feedback often needs to wait for the long period, makes the processing time of whole HARQ become longer.In communication system, send operations such as packet, transmission A-MAP and transmission feedback and all occur in a certain specific moment, a certain in this manual moment refers to a certain concrete subframe of certain frame.
Fig. 3 is the schematic diagram according to the fdd mode HARQ downstream feedback of correlation technique.As shown in Figure 3, there are 8 subframes in system, supposes Tproc MS=4, sequence number is the downlink data packet that 1 subframe is carried distribution, and like this, the fixing feedback subframe numbers of terminal is 5.If terminal is that 5 subframe fashion does not finish the processing to packet sending sequence number, then need to be deferred to the sequence number of next frame be that 5 subframe sends this HARQ feedback to terminal.As can be seen, under the FDD downlink mode, terminal finish to processing data packets and can send feedback information after may need to wait for certain hour, sometimes the stand-by period can be near the time of a frame.
There is the bigger problem of time-delay at HARQ timing method in the correlation technique, do not propose effective solution at present as yet.
Summary of the invention
Have the bigger problem of time-delay and propose the present invention at HARQ timing method in the correlation technique, for this reason, main purpose of the present invention is to provide timing method and the device of a kind of HARQ, one of to address the above problem at least.
To achieve these goals, according to an aspect of the present invention, provide a kind of timing method that mixes automatic repeat requests.
Timing method according to the automatic repeat requests of mixing of the present invention comprises: determine that according to predefined parameter feedback constantly, so that send the feedback message that mixes automatic repeat requests constantly in feedback, wherein, predefined parameter comprise following one of at least: the time T proc of terminal processes data MS, the base station deal with data time T proc BS, Transmission Time Interval TTI and guard time P.
To achieve these goals, according to a further aspect in the invention, provide a kind of timing device that mixes automatic repeat requests.
Timing device according to the automatic repeat requests of mixing of the present invention comprises: computing module, be used for determining that according to predefined parameter feedback constantly, wherein, predefined parameter comprise following one of at least: time, Transmission Time Interval and the guard time of the time of terminal processes data, base station deal with data; Sending module is used for sending the feedback message that mixes automatic repeat requests constantly in feedback.
According to the present invention; determine that according in time, Transmission Time Interval and the guard time of time of terminal processes data, base station deal with data at least one feedback constantly; thereby can guarantee that terminal or base station finish HARQ feedback in the fastest time; avoid the waits for too long fed back, improved the speed of HARQ feedback.
Description of drawings
Accompanying drawing described herein is used to provide further understanding of the present invention, constitutes the application's a part, and illustrative examples of the present invention and explanation thereof are used to explain the present invention, do not constitute improper qualification of the present invention.In the accompanying drawings:
Fig. 1 is the schematic diagram according to the wireless frame structure of correlation technique;
Fig. 2 is the schematic diagram according to the frame structure of the wireless communication system of correlation technique;
Fig. 3 is the schematic diagram according to HARQ downstream feedback under the fdd mode of correlation technique;
Fig. 4 is the flow chart according to the HARQ timing method of the embodiment of the invention;
Fig. 5 is the schematic diagram according to HARQ downstream feedback under the fdd mode of the embodiment of the invention;
Fig. 6 is the schematic diagram according to the HARQ timing device of the embodiment of the invention.
Embodiment
Hereinafter will describe the present invention with reference to the accompanying drawings and in conjunction with the embodiments in detail.Need to prove that under the situation of not conflicting, embodiment and the feature among the embodiment among the application can make up mutually.
Functional overview
There is the bigger problem of time-delay at HARQ timing method in the correlation technique, the invention provides timing method and the device of a kind of HARQ.In the solution of the present invention; determine that according in time, Transmission Time Interval and the guard time of time of terminal processes data, base station deal with data at least one feedback constantly; thereby can guarantee that terminal or base station finish HARQ feedback in the fastest time; avoid the waits for too long fed back, improved the speed of HARQ feedback.In the present invention, the HARQ timing method refers to the HARQ feedback method constantly of determining.
Method embodiment
According to embodiments of the invention, provide the timing method of a kind of HARQ.
Fig. 4 is the flow chart according to the HARQ timing method of the embodiment of the invention.As shown in Figure 4, the HARQ timing method according to the embodiment of the invention mainly may further comprise the steps:
Step S402; determine that according to predefined parameter feedback constantly; so that constantly send the feedback message that mixes automatic repeat requests in feedback, wherein, predefined parameter comprise following one of at least: time, Transmission Time Interval and the guard time of the time of terminal processes data, base station deal with data.
Step S404 sends the feedback message that mixes automatic repeat requests constantly in feedback.
Timing method according to the HARQ of the embodiment of the invention; can determine feedback time according in time, Transmission Time Interval and the guard time of time of terminal processes data, base station deal with data at least one; like this; as long as the processing that finish packet terminal or base station just can send; and do not need to wait for that fixing frame number occurs; thereby shortened the feedback time of HARQ, improved the speed of HARQ feedback.
Employed hereinafter abbreviation is as follows:
A-MAP (Advanced MAP): senior MAP channel;
ARQ (Automatic Request): automatic repeat requests;
FDD (Frequency Division Duplex): Frequency Division Duplexing (FDD);
IE (Information Element): information element;
HARQ (Hybrid Automatic Request): mix automatic repeat requests;
SFH (Superframe Header): superframe head, the effect of Broadcast Control Channel in some communication system;
TDD (Time Division Duplex): time division duplex;
Tproc BS(BS Processing Time): the time of base station deal with data;
Tproc MS(MS Processing Time): the time of terminal processes data;
TTI (Transmission Time Interval): the Transmission Time Interval of packet, also can think the number of subframes that packet is crossed over, use N in embodiments of the present invention TTIThe size of representing TTI, wherein, N TTIRefer to the number of subframes of the Transmission Time Interval TTI correspondence of packet.
According to different situations, above-mentioned Tproc MSOr Tproc BSCan immobilize, also can change according to the situation of terminal and base station.
In timing method according to the HARQ of the embodiment of the invention; be defined in the fixing feedback subframe numbers of data setting that a certain subframe is not sent under the FDD downlink mode; and according to time, TTI (the Transmission Time Interval of terminal processes data; Transmission Time Interval), the number of subframes of each frame and in the guard time at least one determine that feedback constantly; like this; as long as the processing that terminal is finished packet just can send; and do not need to wait for that fixing frame number occurs; thereby shortened the feedback time of HARQ, improved the speed of HARQ feedback.
In timing method according to the HARQ of the embodiment of the invention; be defined in the fixing feedback subframe numbers of data setting that a certain subframe is not sent under the TDD downlink mode; and determine that according to the number of subframes of terminal processes time, TTI (Transmission Time Interval, Transmission Time Interval), each frame, the ascending-descending subframes ratio of each frame and at least one in the guard time feedback constantly.
Be described in detail below in conjunction with the implementation procedure of example the embodiment of the invention.
Embodiment 1
Present embodiment is applied to Tproc MSAnd/or Tproc BSBe fixed value, and be the scene of fdd mode.
On the frame of supposing the system F subframe arranged, the base station has sent packet on m descending sub frame of i frame, and terminal only need wait for that a special time Delay can feed back so, and does not need to wait for that some fixing subframe numbers occur.According to the embodiment of the invention, suppose that terminal sends feedback information at n sub-frame of uplink of j frame, frame number j and subframe numbers n in the time of then can calculating feedback by following formula 1 and formula 2, so that on the n subframe of j frame, send feedback information:
J=i+floor ((Delay+m)/F) (formula 1)
N=(Delay+m) mod F (formula 2)
Wherein, floor (x) is meant the smallest positive integral greater than x, and Delay is determined by at least one of terminal processes time, TTI (Transmission Time Interval, Transmission Time Interval) and guard time.
In addition, N A-MAPThe cycle of expression A-MAP channel equals 1 generally speaking, also can be to the arbitrary integer smaller or equal to the descending sub frame number greater than 1.If N A-MAPGreater than 1, then m=l is used to represent that HARQ bag and A-MAP information can be positioned at same subframe, perhaps, and m=l+N A-MAP-1, be used to represent that the sub-bag of HARQ can be positioned at A-MAP information place subframe N afterwards A-MAPOn-1 subframe, physical relationship is as shown in table 1.
Table 1
Under the FDD downlink mode,, can come computing relay time D elay by following formula according in terminal processes time, TTI (TransmissionTime Interval, Transmission Time Interval) and the guard time at least one:
Delay=N TTI+ Tproc MS+ P (formula 3)
Wherein, N TTIRefer to the number of subframes of the Transmission Time Interval TTI correspondence of packet, P is a guard time, is used to reserve certain redundancy time, and P can be defaulted as 0.Here, calculating Delay by formula 3 is an example, and the embodiment of the invention is not limited only to this, and for example, Delay can also equal N TTI, TprocMS or P value, also can equal them and make up sum in twos or the three makes up sum.
In addition, as the time T proc of base station and terminal processes data MSAnd/or Tproc BSDuring for fixed value, can determine the time T proc of base station deal with data according to the number of subframes of a frame in the system BSTime T proc with the terminal processes data MS, for example, can calculate Tproc by following formula 4 and formula 5 BSAnd Tproc MS:
Tproc MS=floor ((x-i)/2)+2,0≤i≤8 (formula 3)
Tproc BS=floor ((x-j)/2)+2,0≤j≤8 (formula 4)
Wherein, floor (x) is meant the smallest positive integral greater than x, and x is a number of subframes in the frame.As can be seen, get under the situation of different value the Tproc that determines according to the number of subframes in the frame at i and j BSAnd Tproc MSDifferent.
For example, under the situation of i=6 and j=6, when on the frame 6 or 7 subframes being arranged, Tproc then BSAnd Tproc MSEqual 2; When on the frame 8 subframes being arranged, Tproc BSAnd Tproc MSEqual 3.
In addition, present embodiment is applied to the scene of fdd mode, for the situation of tdd mode, as long as corresponding Tproc is arranged BSOr Tproc MSAlso can use the same method and determine Tproc BSOr Tproc MS
Fig. 5 is the schematic diagram according to HARQ downstream feedback under the fdd mode of the embodiment of the invention.As shown in Figure 5, supposing the system exists 8 subframes, Tproc MS=4, N TTI=1, P=0 issues the downlink data packet of being distributed on the 1st subframe of base station in the i frame, and Delay=Tproc MS+ N TTI+ P, thus can calculate according to formula 1 and 2: j=i, n=6, just, terminal sends feedback information on the 6th sub-frame of uplink of i frame.
Embodiment 2:
Present embodiment is applied to Tproc MSAnd/or Tproc BSBe variable value, and be the scene of fdd mode.
Present embodiment 2 is with the difference of embodiment 1: Tproc MSAnd/or Tproc BSBe variable value, need indicate both sizes by indication signaling.
Time T proc when the terminal processes data MSDuring for fixed value not, the base station can send first indication signaling in the control channel of communication system or control messages, wherein, described control channel comprises superframe head or A-MAP channel, described control messages comprises capability negotiation message or registration message, perhaps, terminal can send second indication signaling in the capability negotiation message of communication system or registration message, and above-mentioned first indication signaling and second indication signaling are used to indicate Tproc MSValue.
Time T proc when the base station deal with data BSDuring for fixed value not, the base station can send the 3rd indication signaling in the control channel of communication system or control messages, and wherein, described control channel comprises superframe head or A-MAP channel, and described control messages comprises capability negotiation message or registration message.Above-mentioned the 3rd indication signaling is used to indicate Tproc BSValue.
For example, can be respectively represent Tproc with the indication signaling TBS and the TMS of 1 bit BSAnd Tproc MSTable 2 and table 3 illustrate Tproc respectively BSAnd Tproc MSMethod for expressing, as shown in table 2, when indication signaling TBS=0, Tproc BSValue be 2; Tproc when indication signaling TBS=1 BSValue be 3.As shown in table 3, when indication signaling TBS=0, Tproc MSValue be 2; Tproc when indication signaling TBS=1 MSValue be 3.
In addition, present embodiment is applied to the scene of fdd mode, for the situation of tdd mode, as long as corresponding Tproc is arranged BSOr Tproc MSAlso can use the same method and determine Tproc BSOr Tproc MS
Table 2
TBS Tproc BS
0 2
1 3
Table 3
TMS Tproc MS
0 2
1 3
Equally, under the FDD downlink mode, can come computing relay time D elay by above-mentioned formula 3 according in terminal processes time, TTI (Transmission Time Interval, Transmission Time Interval) and the guard time at least one.In addition, Delay can also equal N TTI, TprocMS or P, also can equal them and make up sum in twos or the three makes up sum.
Then, frame number and subframe numbers in the time of can calculating the transmission feedback by formula 1 and 2.
Embodiment 3:
Present embodiment is applied to Tproc MSAnd Tproc BSBe fixed value or non-fixed value, and be the scene of fdd mode.
In descending HARQ timing, on the frame of system F subframe arranged, the base station has sent packet on m descending sub frame of i frame, and terminal sends feedback information at n sub-frame of uplink of j frame.Frame number and subframe numbers in the time of can calculating descending HARQ and send feedback by table 4 and formula 5:
Table 4
Figure B2009101668565D0000121
(formula 5)
Wherein, N TTIRefer to the number of subframes of the Transmission Time Interval TTI correspondence of packet, Tproc refers to the time T proc of terminal processes data MS, present embodiment is just given an example, and the value of this parameter also can be got other values.
Time T proc when base station and terminal processes data MSOr Tproc BSDuring for fixed value, can determine the time T proc of base station deal with data according to the number of subframes of a frame in the system BSTime T proc with the terminal processes data MS, for example, can calculate Tproc by above-mentioned formula 3 and formula 4 BSAnd Tproc MSWhen the included number of sub frames of each frame is 6 or 7, calculate Tproc=2 by formula 3 and 4; When the included number of sub frames of each frame is 8, calculate Tproc=3 by formula 3 and 4.
In addition, what originally exemplify is example under the fdd mode, for tdd mode, as long as corresponding Tproc is arranged BSOr Tproc MSAlso can use the same method and determine Tproc BSOr Tproc MS
Time T proc when the terminal processes data MSDuring for fixed value not, the base station can send first indication signaling in the control channel of communication system or control messages, wherein, described control channel comprises superframe head or A-MAP channel, described control messages comprises capability negotiation message or registration message, perhaps, terminal can send second indication signaling in the capability negotiation message of communication system or registration message, and above-mentioned first indication signaling and second indication signaling are used to indicate Tproc MSValue.
Time T proc when the base station deal with data BSDuring for fixed value not, the base station can send the 3rd indication signaling in the control channel of communication system or control messages, and wherein, described control channel comprises superframe head or A-MAP channel, and described control messages comprises capability negotiation message or registration message.Above-mentioned the 3rd indication signaling is used to indicate Tproc BSValue.
For example, shown in above-mentioned table 2 and table 3, can represent Tproc with 1 bit indication signaling TBS and TMS respectively BSAnd Tproc MS
In addition, what originally exemplify is example under the fdd mode, and corresponding tdd mode is as long as there is corresponding Tproc BSOr Tproc MSAlso can use the same method and determine Tproc BSOr Tproc MS
According to the embodiment of the invention, for the FDD downlink mode, determine the feedback time of terminal according to terminal processes time and Transmission Time Interval, thereby can guarantee that terminal finishes HARQ feedback in the fastest time, avoid the waits for too long fed back, improved the speed of HARQ feedback.
Embodiment 4:
Present embodiment is applied to Tproc MSAnd Tproc BSBe fixed value or uncertain value, and be the scene of fdd mode.
In the ascending HARQ timing, on the frame of system F subframe arranged, the base station sends A-MAP information at l descending sub frame of i frame, terminal has sent packet on m sub-frame of uplink of j frame, then at q descending sub frame transmission feedback information of k frame, terminal sends retransmission data packet may on y sub-frame of uplink of p frame in the base station.Frame number and subframe numbers in the time of can calculating ascending HARQ transmission and feedback by table 5 and formula 6,7:
Figure B2009101668565D0000141
(formula 6)
Figure B2009101668565D0000142
(formula 7)
Table 5
Wherein, N TTIRefer to the number of subframes of the Transmission Time Interval TTI correspondence of packet, the Tproc in the formula 6 refers to the time T proc of terminal processes data MS, the Tproc in the formula 7 refers to the time T proc of base station deal with data BS, two time can equate or not wait that present embodiment is just given an example, the value of two parameters also can be got other values.
Time T proc when base station and terminal processes data MSOr Tproc BSDuring for fixed value, can determine the time T proc of base station deal with data according to the number of subframes of a frame in the system BSTime T proc with the terminal processes data MS, for example, can calculate Tproc by above-mentioned formula 3 and formula 4 BSAnd Tproc MSWhen the included number of sub frames of each frame is 6 or 7, calculate Tproc=2 by formula 3 and 4; When the included number of sub frames of each frame is 8, calculate Tproc=3 by formula 3 and 4.
In addition, what originally exemplify is example under the fdd mode, for tdd mode, as long as corresponding Tproc is arranged BSOr Tproc MSAlso can use the same method and determine Tproc BSOr Tproc Ms
Time T proc when the terminal processes data MSDuring for fixed value not, the base station can send first indication signaling in the control channel of communication system or control messages, wherein, described control channel comprises superframe head or A-MAP channel, described control messages comprises capability negotiation message or registration message, perhaps, terminal can send second indication signaling in the capability negotiation message of communication system or registration message, and above-mentioned first indication signaling and second indication signaling are used to indicate Tproc MSValue.
Time T proc when the base station deal with data BSDuring for fixed value not, the base station can send the 3rd indication signaling in the control channel of communication system or control messages, and wherein, described control channel comprises superframe head or A-MAP channel, and described control messages comprises capability negotiation message or registration message.Above-mentioned the 3rd indication signaling is used to indicate Tproc BSValue.
As, shown in above-mentioned table 2 and table 3, can represent Tproc with 1 bit indication signaling TBS and TMS respectively BSAnd Tproc MS
In addition, what originally exemplify is example under the fdd mode, for tdd mode, as long as corresponding Tproc is arranged BSOr Tproc MSAlso can use the same method and determine Tproc BSOr Tproc MS
According to the embodiment of the invention, go up row mode for FDD, the feedback time that can determine the base station according to the time and the Transmission Time Interval of base station deal with data, thereby can guarantee that the base station finishes HARQ feedback in the fastest time, avoid the waits for too long fed back, improved the speed of HARQ feedback.
Embodiment 5:
Present embodiment is applied to Tproc MSAnd Tproc BSBe fixed value or uncertain value, and be the scene of fdd mode.
In the FDD downlink mode, on the frame of system F subframe arranged, the base station has sent packet on m descending sub frame of i frame, and terminal sends feedback information at n sub-frame of uplink of j frame.Frame number and subframe numbers in the time of can calculating the transmission feedback by following formula 8 and 9:
J=i+floor (ceil (F/2+m)/F)+z (formula 8)
N=ceil (F/2+m) modF (formula 9)
Wherein,
Figure B2009101668565D0000171
N TTIBe the value of TTI, Tproc refers to the time T proc of terminal processes data MS, present embodiment is just given an example, and the value of this parameter also can be got other values.
Time T proc when base station and terminal processes data MSOr Tproc BSDuring for fixed value, can determine the time T proc of base station deal with data according to the number of subframes of a frame in the system BSTime T proc with the terminal processes data MS, for example, can calculate Tproc by above-mentioned formula 3 and formula 4 BSAnd Tproc MSWhen the included number of sub frames of each frame is 6 or 7, calculate Tproc=2 by formula 3 and 4; When the included number of sub frames of each frame is 8, calculate Tproc=3 by formula 3 and 4.
In addition, what originally exemplify is example under the fdd mode, for tdd mode, as long as corresponding Tproc is arranged BSOr Tproc MSAlso can use the same method and determine Tproc BSOr Tproc MS
Time T proc when the terminal processes data MSDuring for fixed value not, the base station can send first indication signaling in the control channel of communication system or control messages, wherein, described control channel comprises superframe head or A-MAP channel, described control messages comprises capability negotiation message or registration message, perhaps, terminal can send second indication signaling in the capability negotiation message of communication system or registration message, and above-mentioned first indication signaling and second indication signaling are used to indicate Tproc MSValue.
Time T proc when the base station deal with data BSDuring for fixed value not, the base station can send the 3rd indication signaling in the control channel of communication system or control messages, and wherein, described control channel comprises superframe head or A-MAP channel, and described control messages comprises capability negotiation message or registration message.Above-mentioned the 3rd indication signaling is used to indicate Tproc BSValue.
For example, shown in above-mentioned table 2 and table 3, can represent Tproc with 1 bit indication signaling TBS and TMS respectively BSAnd Tproc MS
In addition, what originally exemplify is example under the fdd mode, for tdd mode, as long as corresponding Tproc is arranged BSOr Tproc MSAlso can use the same method and determine Tproc BSOr Tproc MS
Embodiment 6:
Present embodiment is applied to Tproc MSAnd Tproc BSBe fixed value or non-fixed value, and be the scene of tdd mode.
In descending HARQ timing, on the frame of system F subframe arranged, the base station has sent packet on m descending sub frame of i frame, and terminal sends feedback information at n sub-frame of uplink of j frame.Frame number and subframe numbers in the time of can calculating descending HARQ and send feedback by table 6 and formula 10 and parameter K:
Table 6
Figure B2009101668565D0000191
Figure B2009101668565D0000192
(formula 10)
Wherein K is defined as follows:
D is a descending sub frame number in the frame, and U is a sub-frame of uplink number in the frame, and F is the number of sub frames of a frame, that is, and and F=D+U;
If D+U be odd number and D less than U/NA-MAP, then as D during more than or equal to U: K=ceil ((D-U)/2), otherwise, as D during: K=-ceil ((U-D)/2) less than U;
D+U is not that odd number and D are less than U/N if do not satisfy condition A-MAP, then as D during more than or equal to U: K=-floor ((D-U)/2), otherwise, as D during: K=-floor ((U-D)/2) less than U;
Wherein, N TTIBe the value of TTI, Tproc refers to the time T proc of terminal processes data MS, present embodiment is just given an example, and the value of this parameter also can be got other values.
Time T proc when base station and terminal processes data MSOr Tproc BSDuring for fixed value, can determine the time T proc of base station deal with data according to the number of subframes of a frame in the system BSTime T proc with the terminal processes data MS, for example, can calculate Tproc by above-mentioned formula 3 and formula 4 BSAnd Tproc MSWhen the included number of sub frames of each frame is 6 or 7, calculate Tproc=2 by formula 3 and 4; When the included number of sub frames of each frame is 8, calculate Tproc=3 by formula 3 and 4.In addition, what originally exemplify is example under the tdd mode, for fdd mode, as long as corresponding Tproc is arranged BSOr Tproc MSAlso can use the same method and determine Tproc BSOr Tproc MS
Time T proc when the terminal processes data MSDuring for fixed value not, the base station can send first indication signaling in the control channel of communication system or control messages, wherein, described control channel comprises superframe head or A-MAP channel, described control messages comprises capability negotiation message or registration message, perhaps, terminal can send second indication signaling in the capability negotiation message of communication system or registration message, and above-mentioned first indication signaling and second indication signaling are used to indicate Tproc MSValue.
Time T proc when the base station deal with data BSDuring for fixed value not, the base station can send the 3rd indication signaling in the control channel of communication system or control messages, and wherein, described control channel comprises superframe head or A-MAP channel, and described control messages comprises capability negotiation message or registration message.Above-mentioned the 3rd indication signaling is used to indicate Tproc BSValue.
For example, shown in above-mentioned table 2 and table 3, can represent Tproc with 1 bit indication signaling TBS and TMS respectively BSAnd Tproc MSIn addition, what originally exemplify is example under the tdd mode, and corresponding fdd mode is as long as there is corresponding Tproc BSOr Tproc MSAlso can use the same method and determine Tproc BSOr Tproc MS.
According to the embodiment of the invention, for the TDD downlink mode, determine the feedback time of terminal according to terminal processes time and Transmission Time Interval, thereby can guarantee that terminal finishes HARQ feedback in the fastest time, avoid the waits for too long fed back, improved the speed of HARQ feedback.
Embodiment 7:
Present embodiment is applied to Tproc MSAnd Tproc BSBe fixed value or uncertain value, and be the scene of tdd mode.
In the ascending HARQ timing, on the frame of system F subframe arranged, the base station sends A-MAP information at l descending sub frame of i frame, terminal has sent packet on m sub-frame of uplink of j frame, then at q descending sub frame transmission feedback information of k frame, terminal sends retransmission data packet may on y sub-frame of uplink of p frame in the base station.Can calculate that ascending HARQ sends and frame number and subframe numbers during feedback by table 7, formula 11,12 with to the definition of parameter K:
Table 7
Figure B2009101668565D0000211
(formula 11)
(formula 12)
Wherein K is defined as follows:
D is a descending sub frame number in the frame, and U is a sub-frame of uplink number in the frame, and F is the number of sub frames of a frame, that is, and and F=D+U;
If D+U be odd number and D less than U/NA-MAP, then as D during more than or equal to U: K=ceil ((D-U)/2), otherwise, as D during: K=-ceil ((U-D)/2) less than U;
If do not satisfy condition D+U be odd number and D less than U/NA-MAP, then as D during more than or equal to U: K=-floor ((D-U)/2), otherwise, as D during: K=-floor ((U-D)/2) less than U
Wherein, N TTIRefer to the number of subframes of the Transmission Time Interval TTI correspondence of packet, Tproc in the formula 11 refers to the time of terminal processes data, Tproc in the formula 12 refers to the time of base station deal with data, two time can equate or not wait, present embodiment is just given an example, and the value of two parameters also can be got other values.
Time T proc when base station and terminal processes data MSOr Tproc BSDuring for fixed value, can determine the time T proc of base station deal with data according to the number of subframes of a frame in the system BSTime T proc with the terminal processes data MS, for example, can calculate Tproc by above-mentioned formula 3 and formula 4 BSAnd Tproc MSWhen the included number of sub frames of each frame is 6 or 7, calculate Tproc=2 by formula 3 and 4; When the included number of sub frames of each frame is 8, calculate Tproc=3 by formula 3 and 4.In addition, what originally exemplify is example under the tdd mode, for fdd mode, as long as corresponding Tproc is arranged BSOr Tproc MSAlso can use the same method and determine Tproc BSOr Tproc Ms
Time T proc when the terminal processes data MSDuring for fixed value not, the base station can send first indication signaling in the control channel of communication system or control messages, wherein, described control channel comprises superframe head or A-MAP channel, described control messages comprises capability negotiation message or registration message, perhaps, terminal can send second indication signaling in the capability negotiation message of communication system or registration message, and above-mentioned first indication signaling and second indication signaling are used to indicate Tproc MSValue.
Time T proc when the base station deal with data BSDuring for fixed value not, the base station can send the 3rd indication signaling in the control channel of communication system or control messages, and wherein, described control channel comprises superframe head or A-MAP channel, and described control messages comprises capability negotiation message or registration message.Above-mentioned the 3rd indication signaling is used to indicate Tproc BSValue.
For example, shown in above-mentioned table 2 and table 3, can represent Tproc with 1 bit indication signaling TBS and TMS respectively BSAnd Tproc MSIn addition, what originally exemplify is example under the tdd mode, for fdd mode, as long as corresponding Tproc is arranged BSOr Tproc MSAlso can use the same method and determine Tproc BSOr Tproc MS
According to the embodiment of the invention, go up row mode for TDD, the feedback time that can determine the base station according to the time and the Transmission Time Interval of base station deal with data, thereby can guarantee that the base station finishes HARQ feedback in the fastest time, avoid the waits for too long fed back, improved the speed of HARQ feedback.
In sum; according to the embodiment of the invention; determine that according in time, Transmission Time Interval and the guard time of time of terminal processes data, base station deal with data at least one feedback constantly; thereby can guarantee that terminal or base station finish HARQ feedback in the fastest time; avoid the waits for too long fed back, improved the speed of HARQ feedback.
Device embodiment
According to embodiments of the invention, provide the timing device of a kind of HARQ.
Fig. 6 is the schematic diagram according to the HARQ timing device of the embodiment of the invention.As shown in Figure 6, timing device comprises: computing module 602, be used for determining feedback constantly according to predefined parameter, wherein, predefined parameter comprise following one of at least: the time of terminal processes data, Transmission Time Interval and guard time; Sending module 604 is used for sending the feedback message that mixes automatic repeat requests constantly in feedback.
The fixing feedback subframe numbers of data setting that under the FDD downlink mode, a certain subframe is not sent; and according to terminal processes time, TTI (Transmission Time Interval; Transmission Time Interval) at least one and in the guard time determined feedback time; like this; as long as the processing that terminal is finished packet just can send; and do not need to wait for that fixing frame number occurs, thus shortened the feedback time of HARQ, improved the speed of HARQ feedback.
Suppose Tproc MSThe time of expression terminal processes data, according to different situations, the time of terminal processes data can immobilize, and also can change according to the situation of terminal and base station.On this basis, if on the frame of system F subframe arranged, the base station has sent packet on m descending sub frame of i frame, terminal only need wait for that a special time Delay can feed back so, and does not need to wait for that some fixing subframe numbers occur.According to the embodiment of the invention, suppose that terminal sends feedback information at n sub-frame of uplink of j frame, frame number j and subframe numbers n when then computing module 602 can calculate feedback by following formula:
J=i+floor ((Delay+m)/F) (formula 13)
N=(Delay+m) modF (formula 14)
Wherein, floor (x) is meant the smallest positive integral greater than x, and Delay is determined by at least one of terminal processes time, TTI (Transmission Time Interval, Transmission Time Interval) and guard time.
Preferably, can calculate Delay by following formula:
Delay=N TTI+ Tproc MS+ P (formula 15)
Wherein, P is a guard time, is used to reserve certain redundancy time, and P can be defaulted as 0.Here, calculating Delay by formula 5 is an example, and the embodiment of the invention is not limited only to this, and for example, Delay can also be N TTI, among TprocMS and the P one of at least or combination and, that is to say that Delay can equal N TTI, TprocMS or P, also can they make up sum in twos or the three makes up sum.
At Tproc MSOr Tproc BSDuring for fixed value, can determine the time T proc of base station deal with data according to the number of subframes of a frame in the system BSTime T proc with the terminal processes data MS, for example, determine Tproc according to the number of subframes in the frame BSTime T proc with the terminal processes data MS:
Tproc MS=floor ((x-i)/2)+2,0≤i≤8 (formula 16)
Tproc BS=floor ((x-j)/2)+2,0≤j≤8 (formula 17)
In addition, what originally exemplify is example under the fdd mode, for tdd mode, as long as corresponding Tproc is arranged BSOr Tproc MSAlso can use the same method and determine Tproc BSOr Tproc MS
Time T proc when the terminal processes data MSDuring for fixed value not, the base station can send first indication signaling in the control channel of communication system or control messages, wherein, described control channel comprises superframe head or A-MAP channel, described control messages comprises capability negotiation message or registration message, perhaps, terminal can send second indication signaling in the capability negotiation message of communication system or registration message, and above-mentioned first indication signaling and second indication signaling are used to indicate Tproc MSValue.
Time T proc when the base station deal with data BSDuring for fixed value not, the base station can send the 3rd indication signaling in the control channel of communication system or control messages, and wherein, described control channel comprises superframe head or A-MAP channel, and described control messages comprises capability negotiation message or registration message.Above-mentioned the 3rd indication signaling is used to indicate Tproc BSValue.
In addition, what originally exemplify is example under the fdd mode, for tdd mode, as long as corresponding Tproc is arranged BSOr Tproc MSAlso can use the same method and determine Tproc BSOr Tproc MS
According to the embodiment of the invention; for the FDD downlink mode; according to the feedback time of determining one of at least terminal in terminal processes time, Transmission Time Interval and the guard time; thereby can guarantee that terminal finishes HARQ feedback in the fastest time; avoid the waits for too long fed back, improved the speed of HARQ feedback.
Need to prove, can in computer system, carry out in the step shown in the flow chart of accompanying drawing such as a set of computer-executable instructions, and, though there is shown logical order in flow process, but in some cases, can carry out step shown or that describe with the order that is different from herein.
Obviously, those skilled in the art should be understood that, above-mentioned each module of the present invention or each step can realize with the general calculation device, they can concentrate on the single calculation element, perhaps be distributed on the network that a plurality of calculation element forms, alternatively, they can be realized with the executable program code of calculation element, thereby, they can be stored in the storage device and carry out by calculation element, perhaps they are made into each integrated circuit modules respectively, perhaps a plurality of modules in them or step are made into the single integrated circuit module and realize.Like this, the present invention is not restricted to any specific hardware and software combination.
The above is the preferred embodiments of the present invention only, is not limited to the present invention, and for a person skilled in the art, the present invention can have various changes and variation.Within the spirit and principles in the present invention all, any modification of being done, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (16)

1. timing method that mixes automatic repeat requests is characterized in that described method comprises:
Determine feedback constantly according to predefined parameter so that send the feedback message that mixes automatic repeat requests constantly in described feedback, wherein, described predefined parameter comprise following one of at least: the time T proc of terminal processes data MS, the base station deal with data time T proc BS, Transmission Time Interval TTI and guard time P.
2. method according to claim 1 is characterized in that, describedly determines that according to described predefined parameter feedback comprises constantly:
j＝i+floor((Delay+m)/F)
n＝(Delay+m)modF
Wherein, Delay equals the time T proc of terminal processes data MS, any one value, any two sums or the three's sum among Transmission Time Interval TTI and the guard time P, wherein, P is a guard time, is used to reserve certain redundancy time; F is a number of sub-frames that frame is included;
Under the FDD pattern, the base station sends packet on m descending sub frame of i frame;
Under fdd mode, terminal sends described feedback message at n sub-frame of uplink of j frame.
3. method according to claim 1 is characterized in that, describedly determines that according to described predefined parameter feedback comprises constantly:
j = ( i + floor ( ceil ( m + F / 2 ) F ) + z ) mod 4
n＝ceil(m+F/2)modF
Wherein, N TTIEqual the number of sub-frames of described TTI correspondence, be used to represent the value of described TTI;
F is a number of sub-frames that frame is included;
Under fdd mode, the base station sends packet on m descending sub frame of i frame;
Under fdd mode, terminal sends described feedback information at n sub-frame of uplink of j frame.
4. method according to claim 1 is characterized in that, describedly determines that according to described predefined parameter feedback comprises constantly:
k = ( j + floor ( m + F / 2 F ) + w ) mod 4
q＝l
Wherein,
Figure F2009101668565C0000023
N TTIEqual the number of sub-frames of described TTI correspondence, be used to represent the value of described TTI;
F is a number of sub-frames that frame is included;
Terminal sends packet on m sub-frame of uplink of j frame;
Under fdd mode, the base station sends described feedback information at q descending sub frame of k frame;
Under fdd mode, described base station sends A-MAP information at l descending sub frame of i frame.
5. method according to claim 4 is characterized in that, describedly determines that according to described predefined parameter feedback also comprises constantly:
p = ( k + floor ( ceil ( l + F / 2 ) F ) + v ) mod 4
y＝m
Wherein,
Under fdd mode, described terminal sends retransmission data packet may on y sub-frame of uplink of p frame;
j = ( i + floor ( ceil ( l + F / 2 ) F ) + v ) mod 4 .
6. method according to claim 1 is characterized in that, describedly determines that according to described predefined parameter feedback comprises constantly:
j＝i+floor(ceil(F/2+m)/F)+z
n＝ceil(F/2+m)modF
Wherein,
Figure F2009101668565C0000034
N TTIBe the number of sub-frames of described TTI correspondence, be used to represent the value of described TTI;
F is a number of sub-frames that frame is included;
Under fdd mode, the base station sends packet on m descending sub frame of i frame;
Under fdd mode, terminal sends described feedback information at n sub-frame of uplink of j frame.
7. method according to claim 1 is characterized in that, describedly determines that according to described predefined parameter feedback comprises constantly:
j＝(i+z)mod?4
n = 0 , 0 &le; m < K m - K , K &le; m < U + K U - 1 , U + K &le; m < D , As D＞U, perhaps
N=m-k is as D≤U
Wherein,
Figure F2009101668565C0000042
N TTIEqual the number of sub-frames of described TTI correspondence, be used to represent the value of described TTI;
D is a descending sub frame number included in the frame, and U is a sub-frame of uplink number included in the frame, and F is a number of sub-frames that frame is included, F=D+U;
If D+U is that odd number and D are less than U/N A-MAP, then as D during more than or equal to U: K=ceil ((D-U)/2), otherwise, as D during: K=-ceil ((U-D)/2) less than U;
If D+U is that even number and D are less than U/N A-MAP, then as D during more than or equal to U: K=-floor ((D-U)/2), otherwise, as D during: K=-floor ((U-D)/2) less than U;
Under tdd mode, the base station has sent packet on m descending sub frame of i frame;
Under tdd mode, terminal sends feedback information at n sub-frame of uplink of j frame.
8. method according to claim 1 is characterized in that, describedly determines that according to described predefined parameter feedback comprises constantly:
k＝(j+1+w)mod?4
q＝l
Wherein,
Figure F2009101668565C0000051
N TTIEqual the number of sub-frames of described TTI correspondence, be used to represent the value of described TTI;
F is a number of sub-frames that frame is included;
Under tdd mode, terminal sends packet on m sub-frame of uplink of j frame;
Under tdd mode, the base station sends described feedback information at q descending sub frame of k frame;
Under tdd mode, described base station sends A-MAP information at l descending sub frame of i frame.
9. according to each described method in the claim 2 to 8, it is characterized in that, as described Tproc MSAnd/or described Tproc BSDuring for fixed value, described method also comprises: determine Tproc according to included number of subframes of frame in the system MSAnd/or Tproc BS
10. method according to claim 9 is characterized in that, describedly determines Tproc according to included number of subframes of frame in the system MSAnd/or Tproc BSComprise:
Tproc MS＝floor((x-a)/2)+2，0≤a≤8
Tproc BS＝floor((x-b)/2)+2，0≤b≤8
Wherein, x is number of subframes that frame is included in the described system.
11., it is characterized in that, as described Tproc according to each described method in the claim 2 to 8 MSDuring for fixed value not, described method also comprises:
Indicate Tproc according to indication signaling MSSize, wherein, described indication signaling is one or more bits.
12. method according to claim 11, it is characterized in that the base station sends described indication signaling in the control channel of communication system or control messages, wherein, described control channel comprises superframe head or A-MAP channel, and described control messages comprises capability negotiation message or registration message.
13. method according to claim 11 is characterized in that, terminal sends described indication signaling in the capability negotiation message of communication system or registration message.
14., it is characterized in that, as described Tproc according to each described method in the claim 2 to 8 BSDuring for fixed value not, described method also comprises:
Indicate Tproc according to indication signaling BSSize, wherein, described indication signaling is one or more bits.
15. method according to claim 14, it is characterized in that the base station sends described indication signaling in the control channel of communication system or control messages, wherein, described control channel comprises superframe head or A-MAP channel, and described control messages comprises capability negotiation message or registration message.
16. a timing device that mixes automatic repeat requests is characterized in that described timing device comprises:
Computing module is used for determining feedback constantly according to predefined parameter, wherein, described predefined parameter comprise following one of at least: time, Transmission Time Interval and the guard time of the time of terminal processes data, base station deal with data;
Sending module is used for sending the feedback message that mixes automatic repeat requests constantly in described feedback.
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