CN101610138B - Method and system for realizing uplink hybrid automatic repeat requests - Google Patents

Method and system for realizing uplink hybrid automatic repeat requests Download PDF

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Publication number
CN101610138B
CN101610138B CN 200810127117 CN200810127117A CN101610138B CN 101610138 B CN101610138 B CN 101610138B CN 200810127117 CN200810127117 CN 200810127117 CN 200810127117 A CN200810127117 A CN 200810127117A CN 101610138 B CN101610138 B CN 101610138B
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mixed automatic
subframe
asynchronous
travelling carriage
base station
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CN101610138A (en
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王军虎
孙长印
王文焕
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Global Innovation Polymerization LLC
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ZTE Corp
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Priority to CN 200810127117 priority Critical patent/CN101610138B/en
Priority to PCT/CN2008/073526 priority patent/WO2009152673A1/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
    • H04L1/1867—Arrangements specially adapted for the transmitter end
    • H04L1/1887—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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  • Engineering & Computer Science (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Signal Processing (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

The invention discloses a method and a system for realizing uplink hybrid automatic repeat requests, wherein the method for realizing uplink hybrid automatic repeat requests comprises the following step: a mobile station sends data to a base station through subframes of preset uplink synchronous hybrid automatic repeat requests and/or subframes of preset uplink asynchronous hybrid automatic repeat requests. Through the application of the invention, fixed RTT can be kept, system costs can be reduced, shorter RTT is kept, and flexible scheduling is also supported.

Description

The implementation method of uplink hybrid automatic repeat request and system
Technical field
The present invention relates to the communications field, and especially, relate to a kind of implementation method and system of uplink hybrid automatic repeat request.
Background technology
Mixed automatic retransfer request (Hybrid Automatic Retransmission Request, HARQ) is a kind of the change when overcoming wireless mobile channel and technology that impact that multipath fading transmits signal proposes.This technology is by HARQ (AutomaticRetransmission Request, ARQ) and two kinds of technical tie-ups of forward error correction coding (Forward ErrorCorrection, FEC) are made to realize.HARQ can make mobile radio system obtain higher throughput of system and the stability of a system of Geng Gao, and is one of key technology in 3G Long Term Evolution (Long Term Evolution, the LTE) system.
In the HARQ technology, ARQ is combined with FEC, in each packet that sends, contain the check bit of error correction and error detection.If receive and to make mistakes bit number within error correcting capability in the bag, then wrongly corrected voluntarily, need not use ARQ by FEC; When mistake is serious, when having exceeded the error correcting capability of FEC, then feed back, notify the repeating transmission of making a start by ARQ.Thereby, can obtain extra snr gain, and pass through the merging generation time diversity effect of packet, thereby improve throughput and the performance of system.
According to common two kinds of criteria for classifying, can carry out following division to the implementation of HARQ:
First, distinguish according to retransmitting the moment that occurs, HARQ can be divided into synchronous HARQ and asynchronous HARQ, wherein, synchronous HARQ refers to that the transmission (re-transmission) of a HARQ process occurs in fixed time, because receiving terminal is the moment of known transmission in advance, therefore do not need extra signaling consumption to identify the sequence number of HARQ process, the sequence number of the HARQ process of this moment can obtain from subframe numbers; Asynchronous HARQ refers to that the transmission (re-transmission) of a HARQ process can occur at any time, and receiving terminal is not known the generation transmitted constantly in advance, so the processing sequence number of HARQ process need to send together with data;
Second, according to retransmitting form, HARQ can be divided into adaptive HARQ and two kinds of patterns of non-self-adapting HARQ, wherein, retransmit form and comprise modulation coding mode, resource division, retransmit interval, particularly, adaptive HARQ refers to that in retransmission processes each time transmitting terminal can change according to the channel condition information of reality the transformation parameter of part, and the control signal information that therefore comprises transformation parameter in each transmission course will send in the lump; Non-self-adapting HARQ refers to that these transformation parameters all are known in advance for receiving terminal, therefore do not need to transmit the control signal information that comprises transformation parameter.
Can find out that synchronous non-self-adapting HARQ has the advantage of saving signaling consumption; And asynchronous adaptive HARQ retransmits each time and all needs with transport overhead is identical first.
For some business, for example, voice IP (Voice Over Intemet Protocol, VoIP) business, it requires retransmit interval little, each traffic carrying capacity is little, therefore, if each re-transmission all takies identical expense, namely, adopt the mode of asynchronous adaptive HARQ, then can cause the utilization ratio of frequency spectrum lower.Suppose that the signaling bit such as resource assignation when once transmitting are M, HARQ process number is N, and average repeat time is P, then the expense of asynchronous adaptive HARQ needs is N*M*P, and corresponding, the expense that synchronous non-self-adapting HARQ needs is N*M, has reduced (P-1) * N*M.Therefore, the advantage with significant reduction expense and simplification system complexity of synchronous non-self-adapting HARQ, and also it is little to be adapted to delay requirement, each smaller business of transmission payload bag.
In addition, asynchronous HARQ does not have strict time requirement for the re-transmission time, thereby can the higher business of flexible dispatching priority level, and can not produce conflict.Asynchronous self adaptation can be according to channel quality, adjusts adaptively the modulation coding mode, resource distribution of retransmission data packet may etc., can also obtain the scheduling gain.Simultaneously, the each transmission of asynchronous HARQ all needs the expense of signaling, has strengthened the reliability of transmission.For example, transmitting terminal has information to indicate whether to be new data during owing to its transmission when mistake receives the ACK/NACK feedback message, and receiving terminal still can know it is data retransmission or new data.And the resource assignment information of each transmission can receive in correct position to guarantee receiving terminal.
Yet, because the transmission of up-downgoing is independent of each other, therefore can't realizes at present asynchronous HARQ and synchronous non-self-adapting HARQ be combined with and carry out uplink.
Summary of the invention
Consider the problems referred to above and make the present invention, for this reason, main purpose of the present invention is to provide a kind of realization mechanism of uplink hybrid automatic repeat request, to carry out uplink in conjunction with asynchronous HARQ and synchronous non-self-adapting HARQ.
According to embodiments of the invention, a kind of implementation method of side's uplink hybrid automatic repeat request is provided, be applied to comprise the time division duplex orthogenic frequency-division multiplexing system of base station and terminal.
The method comprises: travelling carriage sends data by default uplink synchronous mixed automatic retransfer request subframe and/or up asynchronous mixed automatic retransmission request subframe to the base station.
Wherein, before travelling carriage sends data by uplink synchronous mixed automatic retransfer request subframe and/or described asynchronous mixed automatic retransmission request subframe to the base station, the method can further comprise: the base station is with the information notice travelling carriage of information and/or the described asynchronous mixed automatic retransmission request subframe of uplink synchronous mixed automatic retransfer request subframe, wherein, the information of uplink synchronous mixed automatic retransfer request subframe comprises quantity and the position of uplink synchronous mixed automatic retransfer request subframe, and the information of described up asynchronous mixed automatic retransmission request subframe comprises quantity and the position of described up asynchronous mixed automatic retransmission request subframe.
And, in the situation that the information of the information of uplink synchronous mixed automatic retransfer request subframe and/or above-mentioned asynchronous mixed automatic retransmission request subframe changes, the information of the uplink synchronous mixed automatic retransfer request subframe after the base station will change and/or the information of above-mentioned asynchronous mixed automatic retransmission request subframe notify to shown in travelling carriage, wherein, the mode of notice comprises by any or its combination in broadcasting, multicast, the clean culture.
Wherein, travelling carriage is selected the subframe of described synchronous hybrid automatic repeat in predetermined maximum synchronous hybrid automatic repeat zone, wherein, described maximum synchronous hybrid automatic repeat zone is the subframe zone of the maximum of a radio frames for the retransmit interval that makes mixed automatic retransfer, wherein, the data that send on each subframe can both under the time delay conditions permits such as processing, resend in the corresponding position of next radio frames.
In addition, send in the situation of data to the base station by uplink synchronous mixed automatic retransfer request subframe at travelling carriage, the method further comprises: the base station is in the response message of replying uplink synchronous mixed automatic retransfer request subframe by descending sub frame to travelling carriage.
Wherein, response message and at least 2 subframes of uplink synchronous mixed automatic retransfer request sub-frame interval.
In addition, be in the situation of error response message in response message, the method can further comprise: travelling carriage retransmits uplink synchronous mixed automatic retransfer request msg in the relevant position of the next radio frames of uplink synchronous mixed automatic retransfer request subframe place radio frames.
And, at least 2 subframes of sub-frame interval of the uplink synchronous mixed automatic retransfer request msg of response message and re-transmission.
Preferably, send in the situation of data at travelling carriage to the base station by uplink synchronous mixed automatic retransfer request subframe, the method can further comprise: travelling carriage sends data by the synchronous hybrid automatic repeat request process of radio frames to the base station, wherein, the synchronous hybrid automatic repeat request process comprises a uplink synchronous mixed automatic retransfer request subframe or comprises a plurality of continuous or discrete uplink synchronous mixed automatic retransfer request subframes.
On the other hand, send in the situation of data to the base station by up asynchronous mixed automatic retransmission request subframe at travelling carriage, the method can further comprise: the base station is in the response message of replying up asynchronous mixed automatic retransmission request subframe by descending sub frame to travelling carriage.
Wherein, response message and at least 2 subframes of up asynchronous mixed automatic retransmission request sub-frame interval.
And, be in the situation of error response message in response message, the method can further comprise: travelling carriage retransmits up asynchronous mixed automatic retransmission request data in the follow-up radio frames of up asynchronous mixed automatic retransmission request subframe place radio frames.
Wherein, at least 2 subframes of sub-frame interval of the up asynchronous mixed automatic retransmission request data of response message and re-transmission.
In addition, send in the situation of data at travelling carriage to the base station by up asynchronous mixed automatic retransmission request subframe, the method can further comprise: travelling carriage sends data by the asynchronous mixed automatic retransmission request process of radio frames to the base station, wherein, the asynchronous mixed automatic retransmission request process comprises a up asynchronous mixed automatic retransmission request subframe or comprises a plurality of continuous or discrete up asynchronous mixed automatic retransmission request subframes.
In addition, be less than or equal in retransmit interval in the situation of a radio frames length, travelling carriage sends data by uplink synchronous mixed automatic retransfer request subframe to the base station; In the situation of retransmit interval greater than a radio frames length, travelling carriage sends data by up asynchronous mixed automatic retransmission request subframe to the base station.
And uplink synchronous mixed automatic retransfer request subframe is the sub-frame of uplink of synchronous non-self-adapting mixed automatic retransfer request mode; Up asynchronous mixed automatic retransmission request subframe is the sub-frame of uplink of asynchronous non-self-adapting mixed automatic retransfer request mode.
A kind of realization system of uplink hybrid automatic repeat request is provided according to another embodiment of the present invention.
This system comprises: travelling carriage is used for sending data by uplink synchronous mixed automatic retransfer request subframe and/or the up asynchronous mixed automatic retransmission request subframe of radio frames to the base station; And the base station, be used for replying response message by the descending sub frame of radio frames to travelling carriage.
By technique scheme of the present invention, can keep the RTT that fixes, reduce overhead, keep short RTT, and support flexibly scheduling.
Description of drawings
Accompanying drawing described herein is used to provide a further understanding of the present invention, consists of the application's a part, and illustrative examples of the present invention and explanation thereof are used for explaining the present invention, do not consist of improper restriction of the present invention.In the accompanying drawings:
Fig. 1 is the flow chart according to the implementation method of the uplink hybrid automatic repeat request of the inventive method embodiment;
Fig. 2 is the structural representation according to the radio frames of the TDD-OFDMA system of correlation technique;
Fig. 3 is that the DL/UL according to the embodiment of the invention is the schematic diagram of a kind of HARQ mechanism of 6: 2;
Fig. 4 is that the DL/UL according to the embodiment of the invention is the schematic diagram of a kind of HARQ mechanism of 4: 4;
Fig. 5 is that the DL/UL according to the embodiment of the invention is the schematic diagram of another HARQ mechanism of 4: 4;
Fig. 6 is that the DL/UL according to the embodiment of the invention is the schematic diagram of a kind of HARQ mechanism of 2: 6;
Fig. 7 is that the DL/UL according to the embodiment of the invention is the schematic diagram of another HARQ mechanism of 2: 6;
Fig. 8 is that the DL/UL according to the embodiment of the invention is 3: 5 o'clock maximum synchronous HARQ area schematic;
Fig. 9 is that the DL/UL according to the embodiment of the invention is 3: 5 o'clock maximum synchronous HARQ area schematic;
Figure 10 is the process chart according to the preferred embodiment of the mixed automatic retransferring method of the embodiment of the invention; And
Figure 11 is the block diagram of realization system of the mixed automatic retransfer request of system according to the invention embodiment.
Embodiment
Embodiment of the method
In the present embodiment, provide the implementation method of a kind of uplink hybrid automatic repeat request (HARQ), be applied to comprise the time division duplex orthogenic frequency-division multiplexing system of base station and terminal.
As shown in Figure 1, comprise according to the implementation method of the ascending HARQ of present embodiment: step S102, travelling carriage sends data by default uplink synchronous HARQ subframe and/or upper line asynchronous HARQ subframe to the base station; Step S104, the data recovery response message that the base station sends travelling carriage.
Wherein, uplink synchronous HARQ subframe is in maximum synchronous HARQ zone, and maximum synchronous HARQ zone described here is to satisfy the sub-frame of uplink that RTT is a radio frames requirement.
Wherein, before travelling carriage sends data by uplink synchronous HARQ subframe and/or described asynchronous mixed automatic retransmission request subframe to the base station, the method can further comprise: the base station is with the information notice travelling carriage of information and/or the described asynchronous mixed automatic retransmission request subframe of uplink synchronous HARQ subframe, wherein, the information of uplink synchronous HARQ subframe comprises quantity and the position of uplink synchronous HARQ subframe, and the information of described up asynchronous mixed automatic retransmission request subframe comprises quantity and the position of described up asynchronous mixed automatic retransmission request subframe.
Wherein, travelling carriage should be selected the subframe of described synchronous hybrid automatic repeat in the maximum synchronous hybrid automatic repeat zone that allows, wherein, described maximum synchronous hybrid automatic repeat zone is the subframe zone of the maximum of a radio frames for the retransmit interval that makes mixed automatic retransfer, wherein, the data that send on each subframe can both under the time delay conditions permits such as processing, resend in the corresponding position of next radio frames.
And, in the situation that the information of uplink synchronous HARQ subframe changes, the information of the uplink synchronous HARQ subframe after the base station will change notify to shown in travelling carriage, wherein, the mode of notice comprises by any or its combination in broadcasting, multicast, the clean culture.
In addition, send in the situation of data to the base station by uplink synchronous HARQ subframe at travelling carriage, the method further comprises: the base station is in the response message of replying uplink synchronous HARQ subframe by descending sub frame to travelling carriage.
Wherein, response message and at least 2 subframes of uplink synchronous HARQ sub-frame interval.
In addition, be in the situation of error response message in response message, the method can further comprise: travelling carriage retransmits uplink synchronous HARQ data in the relevant position of the next radio frames of uplink synchronous HARQ subframe place radio frames.
And, at least 2 subframes of sub-frame interval of the uplink synchronous HARQ data of response message and re-transmission.
Preferably, send in the situation of data at travelling carriage to the base station by uplink synchronous HARQ subframe, the method can further comprise: travelling carriage sends data by the synchronous HARQ process of radio frames to the base station, wherein, the synchronous HARQ process comprises a uplink synchronous HARQ subframe or comprises a plurality of continuous or discrete uplink synchronous HARQ subframes.
Alternatively, travelling carriage can send data to the base station by a synchronous HARQ sub-frame of uplink of radio frames; Perhaps send data by a plurality of synchronous HARQ sub-frame of uplink of a plurality of travelling carriages by radio frames to the base station.
On the other hand, line asynchronous HARQ subframe sends in the situation of data to the base station on travelling carriage passes through, and the method can further comprise: the base station is in the response message of replying line asynchronous HARQ subframe by descending sub frame to travelling carriage.
Wherein, response message and at least 2 subframes of upper line asynchronous HARQ sub-frame interval.
And, be in the situation of error response message in response message, the method can further comprise: line asynchronous HARQ data on travelling carriage retransmits in the follow-up radio frames of upper line asynchronous HARQ subframe place radio frames.
Wherein, at least 2 subframes of sub-frame interval of the upper line asynchronous HARQ data of response message and re-transmission.
In addition, line asynchronous HARQ subframe sends in the situation of data to the base station on travelling carriage passes through, the method can further comprise: travelling carriage sends data by the asynchronous HARQ process of radio frames to the base station, wherein, asynchronous HARQ process comprises a upper line asynchronous HARQ subframe or comprises a plurality of continuous or discrete upper line asynchronous HARQ subframes.
In addition, be less than or equal in retransmit interval in the situation of a radio frames length, travelling carriage sends data by uplink synchronous HARQ subframe to the base station; In the situation of retransmit interval greater than a radio frames length, travelling carriage sends data by upper line asynchronous HARQ subframe to the base station, wherein, can partly adopt asynchronous HARQ subframe or all adopt asynchronous HARQ subframe.
And uplink synchronous HARQ subframe is the sub-frame of uplink of synchronous non-self-adapting HARQ pattern; Upper line asynchronous HARQ subframe is the sub-frame of uplink of asynchronous non-self-adapting HARQ pattern.
By above-mentioned processing, can use the descending sub frame the transmission of data of synchronous non-self-adapting HARQ pattern, can keep the RTT that fixes, thereby reduce overhead.
Describe mixed automatic retransferring method of the present invention in detail below in conjunction with the different transmission ratios of the uplink and downlink of radio frames.
Fig. 2 shows the wireless frame structure according to the TDD ofdm system of correlation technique.Wherein, a radio frames comprises 8 subframes, that is, and and SF0 to SF7.
Based on this frame structure, the scheme a among Fig. 3 to the UL/DL that scheme d shows according to the embodiment of the invention be the schematic diagram of a kind of HARQ mechanism of 2: 6.In scheme a, in a radio frames, sub-frame of uplink is 2, and descending sub frame is 6, and a pair of up-downgoing switching point is arranged in each frame, and wherein, maximum synchronous HARQ zone is shown in scheme a.In scheme b, wherein 2 sub-frame of uplink SF0 and SF1 all can adopt the HARQ mode of synchronous non-self-adapting.Concrete synchronous HARQ process is shown in the scheme c and scheme d of Fig. 3, and RTT is the length of a radio frames, that is, and and the duration of 8 TTI.
The scheme a of Fig. 4 to the DL/UL that scheme f shows according to the embodiment of the invention be the schematic diagram of a kind of HARQ mechanism of 4: 4.At the scheme a of Fig. 4 extremely, in a radio frames, descending sub frame is 4, and sub-frame of uplink is 4, and a pair of up-downgoing switching point is arranged in each frame, and there are 4 descending sub frames in maximum synchronous HARQ zone.In scheme b extremely, wherein four descending sub frames all adopt synchronous non-self-adapting HARQ mode, and RTT is the length of a radio frames, i.e. the length of 8 TTI.4 synchronous HARQ processes shown in the scheme c among Fig. 4, scheme d, scheme e and scheme f.
The DL/UL that Fig. 5 shows according to the embodiment of the invention is the schematic diagram of another HARQ mechanism of 4: 4.In the scheme b in Fig. 5, sub-frame of uplink SF0 and sub-frame of uplink SF 1 adopt asynchronous adaptive HARQ mechanism, and sub-frame of uplink SF2 and sub-frame of uplink SF3 adopt synchronous HARQ mechanism.The method of 2 synchronous HARQ processes can adopt scheme c and the scheme d among Fig. 5, and its RTT is a wireless frame length.Here, when maximum all sub-frame of uplink of synchronous HARQ district inclusion, namely, any sub-frame of uplink all can satisfy the sequential requirement of synchronous non-self-adapting HARQ, can make all sub-frame of uplink adopt synchronous non-self-adapting HARQ mechanism, also can partly be chosen as asynchronous adaptive HARQ mode, to embody the flexibility of asynchronous adaptive HARQ.Particularly, can select according to demand the synchronous HARQ subframe by system.
The UL/DL that Fig. 6 shows according to the embodiment of the invention is the schematic diagram of 6: 2 HARQ mechanism.In scheme a shown in Figure 6, in a radio frames, descending sub frame is 6, and sub-frame of uplink is 2, and a pair of up-downgoing switching point is arranged in each frame, and maximum synchronous HARQ zone is 4 subframes.In scheme d, sub-frame of uplink SF2, SF3, SF4 adopt synchronous non-self-adapting HARQ mechanism, and subframe SF0, SF1, SF5 adopt asynchronous adaptive HARQ mechanism.Subframe SF2, SF3, SF4 are respectively synchronous HARQ process 1,2,3; Subframe SF2, SF3, SF4 are respectively asynchronous HARQ zone, and its process is not stipulated.For different user, selected retaining zone can be identical, also can be different.For example, it is synchronous non-self-adapting HARQ zone that user 1 selects subframe SF2, and it is synchronous non-self-adapting HARQ zone that user 2 selects SF3, etc.Base station and travelling carriage consult to decide when this is distributed in basic capability negotiating.User's synchronous HARQ data send in the synchronous HARQ subframe, and asynchronous adaptive HARQ data send in asynchronous HARQ zone.The base station can change the number of sub-frames as synchronous non-self-adapting HARQ according to service conditions, and the subframe sequence number, and the base station is by broadcasting, multicast or unicast messages informing base station.The subframe of all synchronous non-self-adapting HARQ must be in the given maximum synchronous non-self-adapting HARQ zone of system.
The UL/DL that Fig. 7 shows according to the embodiment of the invention is the schematic diagram of another HARQ mechanism of 6: 2.In scheme a shown in Figure 7, in a radio frames, sub-frame of uplink is 6, and descending sub frame is 2, and a pair of up-downgoing switching point is arranged in each frame, and maximum synchronous HARQ zone is 4 subframes.In the scheme d of Fig. 7, the sub-frame of uplink sequence number that can carry out synchronous non-self-adapting HARQ is issued in the base station in broadcast message, and travelling carriage can send data to the base station in these subframes, and its HARQ pattern is the synchronous non-self-adapting pattern.The data that travelling carriage sends in addition in synchronous non-self-adapting HARQ zone are asynchronous adaptive model.Wherein, it is a HARQ process that subframe SF2 and SF3 can unite, for synchronous non-self-adapting HARQ process 1, such as the scheme c of Fig. 7; Subframe SF4 is synchronous non-self-adapting HARQ process 2, such as the scheme d of Fig. 7.Subframe SF0, SF1, SF5 are asynchronous adaptive HARQ pattern, and wherein can to unite be 1 process for SF0, SF1,, is asynchronous adaptive HARQ process 1 that is, and subframe SF5 is asynchronous adaptive HARQ process 2.The subframe of the identical HARQ pattern of a plurality of employings can freely form a process, to adapt to the high traffic demand, further reduces the expense of system.
When basic capability negotiating is carried out in travelling carriage and base station, select sub-frame of uplink SF2, SF3, SF4 to adopt synchronous non-self-adapting HARQ mechanism, and subframe SF0, SF1, SF5 adopt asynchronous adaptive HARQ mechanism.The base station can change the number of sub-frames as synchronous non-self-adapting HARQ according to service conditions, and the subframe sequence number, notifies all travelling carriages or corresponding travelling carriage by broadcast.
The UL/DL that Fig. 8 shows according to the embodiment of the invention is the schematic diagram in 3: 5 o'clock maximum synchronous HARQ zones.
The UL/DL that Fig. 9 shows according to the embodiment of the invention is the schematic diagram in 5: 3 o'clock maximum synchronous HARQ zones.
The corresponding processing procedure of Fig. 8 and Fig. 9 and Fig. 5, Fig. 6 and the corresponding processing procedure of Fig. 7 are similar, no longer repeat here.
Preferably, the handling process according to the mixed automatic retransferring method of the embodiment of the invention can as shown in figure 10, comprise:
Step S1002, travelling carriage sends data by synchronous HARQ sub-frame of uplink and the asynchronous HARQ sub-frame of uplink of radio frames to the base station, wherein, the synchronous HARQ sub-frame of uplink is for using the sub-frame of uplink of synchronous non-self-adapting HARQ pattern, and asynchronous HARQ sub-frame of uplink is for using the sub-frame of uplink of asynchronous adaptive HARQ pattern;
Step S1004, the response message of synchronous HARQ sub-frame of uplink and asynchronous HARQ sub-frame of uplink is replied in the base station to the base station by the descending sub frame of radio frames, wherein, reply at least 2 subframes in interval of the descending sub frame of response message and synchronous HARQ sub-frame of uplink and asynchronous HARQ sub-frame of uplink.
System embodiment
A kind of realization system of ascending HARQ is provided in the present embodiment.
As shown in figure 11, the realization system according to the ascending HARQ of present embodiment comprises: travelling carriage 10 is used for sending data by uplink synchronous HARQ subframe and/or the upper line asynchronous HARQ subframe of radio frames to the base station; And base station 20, be used for replying response message by the descending sub frame of radio frames to travelling carriage.Wherein, reply at least 2 subframes in interval of the descending sub frame of response message and synchronous HARQ sub-frame of uplink and asynchronous HARQ sub-frame of uplink.
Preferably, travelling carriage comprises: structural unit, be used for the structure radio frames, and radio frames is configured to comprise the synchronous HARQ sub-frame of uplink; And transmitting element, be used for sending data by the synchronous HARQ sub-frame of uplink.
Preferably, the base station comprises: receiving element is used for receiving the radio frames from travelling carriage; And response unit, be used for replying to travelling carriage by descending sub frame the response message of synchronous HARQ sub-frame of uplink, the descending sub frame of replying response message and synchronous HARQ sub-frame of uplink be 2 subframes in interval at least, and the re-transmission subframe of the descending sub frame of answer response message and asynchronous HARQ sub-frame of uplink 2 subframes in interval at least.
Preferably, the base station comprises: the structural unit (not shown), be used for the structure radio frames, and radio frames is configured to comprise synchronous HARQ sub-frame of uplink and asynchronous HARQ subframe; And response unit, be used for sending response message by descending sub frame.The descending sub frame of replying response message and synchronous HARQ sub-frame of uplink be 2 subframes in interval at least, and the re-transmission subframe of the descending sub frame of answer response message and synchronous HARQ sub-frame of uplink 2 subframes in interval at least.
Preferably, travelling carriage comprises: the transmitting element (not shown) is used for sending data by subframe; And the response unit (not shown), be used for sending data by sub-frame of uplink to the base station.
Preferably, said system also comprises: synchronous subframe and asynchronous subframe notification unit (not shown), be used for the base station and prenotice the information of travelling carriage synchronous HARQ sub-frame of uplink, wherein, the information of synchronous HARQ sub-frame of uplink comprises quantity and the position of synchronous HARQ sub-frame of uplink; And the information of asynchronous HARQ sub-frame of uplink, wherein, the information of asynchronous HARQ sub-frame of uplink comprises quantity and the position of synchronous HARQ sub-frame of uplink.
Preferably, be that travelling carriage also comprises in the situation of wrong responses in response message: the retransmission unit (not shown), be used for retransmitting the synchronous HARQ data in the identical position of next radio frames, or the asynchronous data that retransfers of follow-up radio frames.
By technique scheme of the present invention, can realize following technique effect:
(1), utilize synchronous non-self-adapting HARQ expense little, process advantage simple and that RTT is fixing, reduced overhead;
(2), utilize the dispatching flexibility of asynchronous adaptive HARQ, avoided the conflict of urgency traffic;
(3), utilize the high efficiency of transmission characteristics of asynchronous adaptive HARQ, reduce RTT and the number of retransmissions of HARQ.
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 modifications and variations.Within the spirit and principles in the present invention all, any modification of doing, be equal to replacement, improvement etc., all should be included within protection scope of the present invention.

Claims (16)

1. the implementation method of a uplink hybrid automatic repeat request is applied to comprise the time division duplex orthogenic frequency-division multiplexing system of base station and terminal, it is characterized in that described method comprises:
Travelling carriage sends data by default uplink synchronous mixed automatic retransfer request subframe and/or up asynchronous mixed automatic retransmission request subframe to the base station;
Wherein, before described travelling carriage sends described data by described uplink synchronous mixed automatic retransfer request subframe and/or described asynchronous mixed automatic retransmission request subframe to described base station, further comprise:
Described travelling carriage is notified with the information of described uplink synchronous mixed automatic retransfer request subframe and/or the information of described asynchronous mixed automatic retransmission request subframe in described base station, wherein, the information of described uplink synchronous mixed automatic retransfer request subframe comprises quantity and the position of described uplink synchronous mixed automatic retransfer request subframe, and the information of described up asynchronous mixed automatic retransmission request subframe comprises quantity and the position of described up asynchronous mixed automatic retransmission request subframe.
2. method according to claim 1, it is characterized in that, in the situation that the information of the information of described uplink synchronous mixed automatic retransfer request subframe and/or above-mentioned asynchronous mixed automatic retransmission request subframe changes, the information of the uplink synchronous mixed automatic retransfer request subframe after described base station will change and/or the information of asynchronous mixed automatic retransmission request subframe notify to shown in travelling carriage, wherein, the mode of notice comprises by any or its combination in broadcasting, multicast, the clean culture.
3. method according to claim 1, it is characterized in that, described travelling carriage is selected the subframe of described synchronous hybrid automatic repeat in predetermined maximum synchronous hybrid automatic repeat zone, wherein, described maximum synchronous hybrid automatic repeat zone is the subframe zone of the maximum of a radio frames for the retransmit interval that makes mixed automatic retransfer, wherein, the data that send on each subframe can both under the time delay conditions permits such as processing, resend in the corresponding position of next radio frames.
4. method according to claim 1 is characterized in that, sends in the situation of described data to described base station by described uplink synchronous mixed automatic retransfer request subframe at described travelling carriage, further comprises:
Described base station is in described response message of replying described uplink synchronous mixed automatic retransfer request subframe by descending sub frame to described travelling carriage.
5. method according to claim 4 is characterized in that, described response message and at least 2 subframes of described uplink synchronous mixed automatic retransfer request sub-frame interval.
6. method according to claim 4 is characterized in that, is in the situation of error response message in described response message, further comprises:
Described travelling carriage retransmits described uplink synchronous mixed automatic retransfer request msg in the relevant position of the next radio frames of described uplink synchronous mixed automatic retransfer request subframe place radio frames.
7. method according to claim 6 is characterized in that, at least 2 subframes of sub-frame interval of the described uplink synchronous mixed automatic retransfer request msg of described response message and re-transmission.
8. method according to claim 4 is characterized in that, sends in the situation of described data to described base station by described uplink synchronous mixed automatic retransfer request subframe at described travelling carriage, further comprises:
Described travelling carriage sends described data by the synchronous hybrid automatic repeat request process of radio frames to described base station, wherein, described synchronous hybrid automatic repeat request process comprises a uplink synchronous mixed automatic retransfer request subframe or comprises a plurality of continuous or discrete uplink synchronous mixed automatic retransfer request subframes.
9. method according to claim 1 is characterized in that, sends in the situation of described data to described base station by described up asynchronous mixed automatic retransmission request subframe at described travelling carriage, further comprises:
Described base station is in described response message of replying described up asynchronous mixed automatic retransmission request subframe by descending sub frame to described travelling carriage.
10. method according to claim 9 is characterized in that, described response message and at least 2 subframes of described up asynchronous mixed automatic retransmission request sub-frame interval.
11. method according to claim 9 is characterized in that, is in the situation of error response message in described response message, further comprises:
Described travelling carriage retransmits described up asynchronous mixed automatic retransmission request data in the follow-up radio frames of described up asynchronous mixed automatic retransmission request subframe place radio frames.
12. method according to claim 11 is characterized in that, at least 2 subframes of sub-frame interval of the described up asynchronous mixed automatic retransmission request data of described response message and re-transmission.
13. method according to claim 9 is characterized in that, sends in the situation of described data to described base station by described up asynchronous mixed automatic retransmission request subframe at described travelling carriage, further comprises:
Described travelling carriage sends described data by the asynchronous mixed automatic retransmission request process of radio frames to described base station, wherein, described asynchronous mixed automatic retransmission request process comprises a up asynchronous mixed automatic retransmission request subframe or comprises a plurality of continuous or discrete up asynchronous mixed automatic retransmission request subframes.
14. each described method in 13 is characterized in that according to claim 1, is less than or equal in retransmit interval in the situation of a radio frames length, described travelling carriage sends data by described uplink synchronous mixed automatic retransfer request subframe to described base station; In the situation of retransmit interval greater than a radio frames length, described travelling carriage sends data by described up asynchronous mixed automatic retransmission request subframe to described base station.
15. each described method in 13 is characterized in that described uplink synchronous mixed automatic retransfer request subframe is the sub-frame of uplink of synchronous non-self-adapting mixed automatic retransfer request mode according to claim 1; Described up asynchronous mixed automatic retransmission request subframe is the sub-frame of uplink of asynchronous non-self-adapting mixed automatic retransfer request mode.
16. the realization system of a uplink hybrid automatic repeat request is characterized in that, comprising:
Travelling carriage is used for sending data by uplink synchronous mixed automatic retransfer request subframe and/or the up asynchronous mixed automatic retransmission request subframe of radio frames to the base station; And
The base station, be used for replying response message by the descending sub frame of radio frames to described travelling carriage, and before described travelling carriage sends described data by described uplink synchronous mixed automatic retransfer request subframe and/or described asynchronous mixed automatic retransmission request subframe to described base station, notify described travelling carriage with the information of described uplink synchronous mixed automatic retransfer request subframe and/or the information of described asynchronous mixed automatic retransmission request subframe, wherein, the information of described uplink synchronous mixed automatic retransfer request subframe comprises quantity and the position of described uplink synchronous mixed automatic retransfer request subframe, and the information of described up asynchronous mixed automatic retransmission request subframe comprises quantity and the position of described up asynchronous mixed automatic retransmission request subframe.
CN 200810127117 2008-06-19 2008-06-19 Method and system for realizing uplink hybrid automatic repeat requests Expired - Fee Related CN101610138B (en)

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