CN101796763B - Apparatus and method for determining time to response of retransmission in a multihop relay wireless communication system - Google Patents

Apparatus and method for determining time to response of retransmission in a multihop relay wireless communication system Download PDF

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CN101796763B
CN101796763B CN2008801060854A CN200880106085A CN101796763B CN 101796763 B CN101796763 B CN 101796763B CN 2008801060854 A CN2008801060854 A CN 2008801060854A CN 200880106085 A CN200880106085 A CN 200880106085A CN 101796763 B CN101796763 B CN 101796763B
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ack
nack
time
information
grouping
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CN101796763A (en
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张泳彬
雷克施·塔奥利
孙仲济
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Samsung Electronics Co Ltd
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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
    • H04L1/1825—Adaptation of specific ARQ protocol parameters according to transmission conditions

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

Abstract

A multihop relay wireless communication system is provided. A Base Station (BS) includes a calculator for calculating an ACKnowledge (ACK)/Non ACK (NACK) transmission time of at least one Relay Station (RS) using retransmission parameter values, and a transmitter for transmitting the ACK/NACK transmission time information to the at least one RS.

Description

For the apparatus and method of determining at multihop relay wireless communication system the response time of retransmitting
Technical field
The present invention relates to multi-hop (multihop) relay wireless communications system.More specifically, the present invention relates to for the apparatus and method of determining the repeating transmission time of response signal at multihop relay wireless communication system.
Background technology
In wireless communication system, by data possibility distortion owing to channel condition of radio channel sending and receiving, and mistake may appear in the data that receive.Be used for control and recover wrong technology comprising arq (ARQ) scheme and frame error checking (FEC) scheme.According to the ARQ scheme, receiving terminal is to transmitting terminal request repeat impaired (compromised) data.According to the FEC scheme, receiving terminal is proofreaied and correct the mistake that is caused by the data of being damaged.
When wireless communication system adopted the ARQ scheme, receiving terminal can be by decoding to check mistake to the grouping that receives.When not having mistake, receiving terminal sends positive acknowledgement (ACK) signal to transmitting terminal.When data had mistake, receiving terminal sent Negative Acknowledgement (NACK) signal to transmitting terminal.When receiving ack signal, transmitting terminal sends new grouping.When receiving the NACK signal, transmitting terminal is retransmitted previous grouping.
In response to the ever-increasing demand for high speed and large-capacity communication, considering to adopt multi-hop relay scheme.Multi-hop relay scheme by use by radio channel the relay station of repeating signal between base station and the terminal guarantee cell boarder or in blind area (shadow area) the good radio channel of the terminal of movement.That is to say that multihop relay wireless communication system can be by providing better radio channel via the data of relay station relays sending and receiving between base station and terminal between base station and terminal.
Because the radio channel between base station and terminal comprises a plurality of hops (hop) in multi-hop relay scheme, so by a plurality of node sending and receiving signals.Therefore, in multihop relay wireless communication system, be difficult to use the ARQ scheme.Therefore, needed is a kind of for carrying out the method for ARQ scheme at multihop relay wireless communication system by considering relay station.
Summary of the invention
Technical scheme
An aspect of of the present present invention is to solve at least the problems referred to above and/or shortcoming and advantage described below at least is provided.Therefore, an aspect of of the present present invention provides a kind of apparatus and method for use arq (ARQ) scheme at multihop relay wireless communication system.
Another aspect of the present invention provides a kind of apparatus and method for determine the ARQ response time at multihop relay wireless communication system.
Of the present invention also on the one hand provide a kind of for multihop relay wireless communication system to the base station, relay station and the apparatus and method of terminal notice ARQ response time.
By provide a kind of device that is used for base station (BS) at multihop relay wireless communication system solve above-mentioned aspect.This device comprises: calculator is used for use and retransmits the positive acknowledgement (ACK) of at least one relay station of parameter value calculation (RS)/Negative Acknowledgement (NACK) transmitting time; And transmitter, be used for sending the ACK/NACK transmission time information to described at least one RS.
According to an aspect of the present invention, a kind of device that is used for relay station (RS) in multihop relay wireless communication system comprises: receiver is used for reception sources from the ACK/NACK at BS place transmission time information; And transmitter, be used for sent by the indicated frame of described ACK/NACK transmission time information with and the ACK/NACK that is correlated with of the corresponding grouping of described ACK/NACK transmitting time.
According to a further aspect in the invention, the method for operation of a kind of BS in multihop relay wireless communication system comprises: use the ACK/NACK transmitting time of retransmitting at least one RS of parameter value calculation; And send described ACK/NACK transmission time information to described at least one RS.
According to also one side of the present invention, the method for operation of a kind of RS in multihop relay wireless communication system comprises: reception sources is from the ACK/NACK of BS transmission time information; And in the frame indicated by described ACK/NACK transmission time information, send with and the ACK/NACK that is correlated with of the corresponding grouping of described ACK/NACK transmitting time.
According to also one side of the present invention, the method for operation of a kind of RS in multihop relay wireless communication system comprises: the repeating transmission parameter value that receives one or more other RS from BS; Use described repeating transmission parameter value calculation ACK/NACK transmitting time; And according to the ACK/NACK transmission time information transmission ACK/NACK that calculates.Described repeating transmission parameter value comprises at least one in following: the up link of one or more other RS (UL) data processing delay time, down link (DL) the data processing delay time of one or more other RS and the ACK/NACK transmission lag time of one or more other RS.
By disclose the detailed description of exemplary embodiment of the present invention below in conjunction with accompanying drawing, other aspects of the present invention, advantage and prominent features will become apparent for those skilled in the art.
Description of drawings
From the description below in conjunction with accompanying drawing, the above and other aspect of some exemplary embodiment of the present invention, feature and advantage will become clearer, wherein:
Fig. 1 illustrates the according to an exemplary embodiment of the present invention signal path between base station and the terminal in multihop relay wireless communication system;
Fig. 2 illustrates the according to an exemplary embodiment of the present invention exchange of the positive acknowledgement in the downlink packet transfer (ACK) in multihop relay wireless communication system/Negative Acknowledgement (NACK);
Fig. 3 is the block diagram of base station and relay station in multihop relay wireless communication system according to an exemplary embodiment of the present invention;
Fig. 4 illustrates the according to an exemplary embodiment of the present invention operation of the base station in multihop relay wireless communication system;
Fig. 5 illustrates the according to an exemplary embodiment of the present invention operation of the relay station in multihop relay wireless communication system;
Fig. 6 illustrates the according to an exemplary embodiment of the present invention operation of the base station in multihop relay wireless communication system; And
Fig. 7 illustrates the according to an exemplary embodiment of the present invention operation of the relay station in multihop relay wireless communication system.
In whole accompanying drawing, should understand identical Reference numeral and refer to identical part, assembly and structure.
Embodiment
Provide below with reference to the description of accompanying drawing and help the of the present invention exemplary embodiment of complete understanding as limiting by claim and equivalent thereof.It comprises help understanding but should be regarded as merely exemplary various specific detail.Therefore, one of skill in the art will recognize that in the situation that does not deviate from scope and spirit of the present invention and can carry out variations and modifications to embodiment described here.And, for clarity and conciseness, omitted the description to known function and structure.
Exemplary embodiment of the present invention provides the technology that is used for using at multihop relay wireless communication system arq (ARQ) scheme.Here, as example, wireless communication system is described as OFDM (OFDM) wireless communication system.Yet the present invention can be applicable to other wireless communication systems.
Fig. 1 illustrates the according to an exemplary embodiment of the present invention signal path between base station and the terminal in multihop relay wireless communication system.
With reference to figure 1, jump in the trunking traffics down link (DL) data between base station (BS) 110 and mobile radio station (MS) 140 3 and be sent to MS 140 from BS 110 via the first relay station (RS) 120 and the 2nd RS 130.That is to say that BS 110 sends to a RS 120, the one RS 120 with this DL data retransmission to the two RS 130 with these DL data, and the 2nd RS 130 with this DL data retransmission to MS140.
In multihop relay wireless communication system, jump in the trunking traffics up link (UL) data between the BS 110 and MS 140 3 and be sent to BS 110 from MS 140 via the 2nd RS 130 and a RS 120.That is to say that MS 140 sends to the 2nd RS 130, the two RS 130 with this UL data relay to the RS 120 with these UL data, and a RS 120 with this UL data relay to BS110.
When the UL data that receive or the DL data that receive because channel distortion and when destroyed, BS110 or MS 140 use the ARQ schemes to retransmit and receive error-free (error-free) data.When multihop relay wireless communication system when adopting the centralized dispatching scheme based on the repeating transmission of ARQ scheme, BS need to confirm from RS 120 and 130 and the ACK/NACK of MS 140.
The ARQ scheme can be subdivided into the confirmation of synchronization transmission and asynchronous affirmation sends.Send according to confirmation of synchronization, each of BS, RS and MS should be known its sending and receiving ACK/NACK in which physical frame.Exemplary embodiment of the present invention provides and has been used for determining the transmitting time of ACK/NACK and the technology of time of reception.Hereinafter, hybrid ARQ (HARQ) scheme has been described by way of example.Yet the present invention can be applicable to any other ARQ scheme.
Fig. 2 illustrates the according to an exemplary embodiment of the present invention exchange of the ACK/NACK in the DL transmitted in packets in multihop relay wireless communication system.More specifically, Fig. 2 illustrates the exchange of jumping the grouping of the DL between BS 210 and MS 240 and ACK/NACK in the communication 3.Even when the number of hop changes, exchange DL grouping and ACK/NACK also same as shown in Figure 2ly.
In step 201, BS 210 sends schedule information and grouping to the 2nd RS 220 in frame i.At this, schedule information can be the mapping message of indication resource allocation information.The grouping that meets the HARQ scheme comprises data and is used for the cyclic redundancy check (CRC) (CRC) of error checking.
Receive schedule information and grouping in frame i after, the 2nd RS 220 is at time p 2Interior processing DL data, and in step 203, in frame i+1 with schedule information and packet relay to the RS 230.At this, p 2The DL data processing delay time that represents the 2nd RS 220.In more detail, p 2Be the grouping that the 2nd RS 220 decodings receive before retransmitting and check the wrong time of delay that spends.p 2Depend on the performance of the 2nd RS 220 and feature and change.In Fig. 2, suppose p 2Equal the time that a frame occupies.
Receive schedule information and grouping in frame i+1 after, a RS 230 is at time p 1Interior processing DL data, and in step 205, via frame i+2 schedule information and packet relay are arrived MS 240.p 1Be the grouping that a RS 230 decodings receive before retransmitting and check the wrong time of delay that spends.p 1Depend on the performance of a RS 230 and feature and change.In Fig. 2, suppose p 1Equal the time that a frame occupies.
Receive schedule information and grouping via frame i+2 after, MS 240 checks the mistake relevant with grouping in time j, and in step 207, sends ACK/NACK to a RS 230 in frame i+3.More specifically, when grouping did not have mistake, MS 240 sent ACK, and when exist with divide into groups relevant when wrong, transmission NACK.At this, j represents the ACK/NACK transmission lag time of MS 240.More specifically, j is illustrated in and sends the grouping that decoding receives before the ACK/NACK and check the wrong time of delay that spends.J depends on the performance of MS and feature and changes.In Fig. 2, suppose that j equals the time that a frame occupies.
When in frame i+3, receiving ACK/NACK, a RS 230 spended time q 1Process ACK/NACK, and in step 209, via frame i+4 ACK/NACK is relayed to the 2nd RS220.At this, q 1Represent the ACK/NACK processing delay time of a RS, and depend on the performance of a RS 230 and feature and change.In Fig. 2, suppose q 1Equal the time that a frame occupies.Further note, because p 1And q 1The two is all relevant with a RS 230, so they may be basic identical.Yet, p 1And q 1Also can be different.
When receiving ACK/NACK via frame i+4, the 2nd RS 240 spended time q 2Process ACK/NACK, and in step 211, via frame i+5 ACK/NACK is relayed to BS 210.At this, q 2Represent the ACK/NACK processing delay time of the 2nd RS, and depend on the performance of the 2nd RS 220 and feature and change.In Fig. 2, suppose q 2Equal the time that a frame occupies.Further note, because p 2And q 2The two is all relevant with the 2nd RS 220, so they may be basic identical.Yet, p 2And q 2Also can be different.
As mentioned above, DL divides into groups and the sending and receiving of the ACK/NACK of DL grouping in order to control, and BS need to dispatch the sending and receiving of ACK/NACK.For this reason, BS should know from the ACK/NACK information of RS and MS transmission.And RS should know the correct time information that ACK/NACK sends.For example, in Fig. 2, the 2nd RS 220 that receives grouping via frame i need to know at (namely in frame i+5) transmission ACK/NACK behind 5 frames.A RS 230 who receives grouping via frame i+1 need to know at (namely in frame i+4) transmission ACK/NACK behind 3 frames.
Exemplary embodiment of the present invention is calculated the ACK/NACK transmitting time based on equation (1).
[formula .1]
n RS H = Σ h = 1 H ( p h + q h ) + j . . . ( 1 )
In equation (1),
Figure GPA00001045636300062
Represent the time interval between the ACK/NACK transmitting time of the DL grouping time of reception of corresponding RS and DL grouping.H is illustrated in the number of the hop between corresponding RS and the MS, P hExpression is the DL data processing delay time of the RS of h from the number of the hop that MS begins, q hExpression is the ACK/NACK transmission lag time of the RS of h from the number of the hop that MS begins, and j represents the ACK/NACK transmission lag time of MS.When using frame as p h, q h, when j and the unit in equation (1),
Figure GPA00001045636300063
Has the value take frame as unit.In this case, after receiving the DL grouping, when
Figure GPA00001045636300064
Individual frame past tense RS sends ACK/NACK.
To be used for based on the ACK/NACK transmitting time that equation (1) calculates the scheduling of BS and the ACK/NACK transmission of RS.Calculate the ACK/NACK transmission time information by BS, and the ACK/NACK transmission time information is provided for RS, perhaps calculates the ACK/NACK transmission time information by RS.Hereinafter, will be such as the p in the equation (1) hAnd q hThe required value of calculating ACK/NACK transmitting time be called the repeating transmission parameter value.
Because retransmitting parameter value is data or the ACK processing delay time at RS place, so they can be different according to RS.Therefore, the network by RS enters process or capability negotiation process and will retransmit parameter value and be forwarded to BS from RS.Yet, when the RS in the wireless communication system has identical repeating transmission parameter value, can not carry out from RS and collect the repeating transmission parameter value and transmit the repeating transmission parameter value to RS.In this case, BS and RS have known the repeating transmission parameter value as system variable.
Calculate the ACK/NACK transmitting time at BS or RS place.BS uses the repeating transmission parameter value calculation ACK/NACK transmitting time that enters process or the collection of capability negotiation process by the network of RS, and the ACK/NACK transmitting time of calculating is offered RS.BS uses when providing each RS or send ACK/NACK which frame such as the control of DL/UL mapping or administrative messag or schedule information of sending from BS to each RS.
According to exemplary embodiment of the present invention, a RS 220 receives DL mapping and HARQ data in frame i, and BS 210 notices are included in the value ' n ' in the DL mapping.At this, value ' n ' expression vertical shift or absolute frame number.If value ' n ' expression vertical shift, then a RS 220 sends the ACK/NACK corresponding with the HARQ data that receive in frame i in frame i+n.In this case, value ' n ' be described to ' ACK_frame_delay ' otherwise, value ' n ' represents absolute frame number, a RS 220 sends the ACK/NACK corresponding with the HARQ data that receive in frame i in frame n.
According to another embodiment of the present invention, a RS 220 receives DL mapping and HARQ data from BS 210 among frame i.The ULACK/NACK that BS 210 uses the UL that comprises value ' n ' to shine upon to dispatch among the frame k is regional.Here, value ' n ' expression vertical shift or absolute frame number.If value ' n ' expression vertical shift, namely ' n ' is poor between k and the i, and then a RS 220 sends the ACK/NACK corresponding with the HARQ data that receive in frame k-n in frame k.Otherwise value ' n ' represents absolute frame number, and namely ' n ' is i, and then a RS 220 sends the ACK/NACK corresponding with the HARQ data that receive in frame i in frame k.
On the contrary, when RS calculated the ACK/NACK transmitting time, BS provided the repeating transmission parameter value of collected RS to RS, and RS calculates their ACK/NACK transmitting time.For example, a RS 220 does not know the repeating transmission parameter of the 2nd RS 230 and MS 240.Thereby BS 210 uses such as the control of DL mapping or UL mapping or administrative messag or schedule information and retransmits parameter to a RS 220 notices.Then when a RS 220 can calculate a RS 220 or send the ACK/NACK corresponding with the HARQ data that receive in which frame in frame i.
Fig. 3 is according to the BS in multihop relay wireless communication system of exemplary embodiment of the present invention and the block diagram of RS.
The BS of Fig. 3 and RS comprise radio transmitter 310, radio receiver 330, harq controller 350, HARQ response time calculator 370 and HARQ scheduler 390.
Radio transmitter 310 comprises ACK/NACK maker 312, service data unit (SDU) maker 314, message builder 316, channel encoder 318, CRC maker 322, modulator 324, contrary fast fourier transform (IFFT) arithmetic unit 326 and radio frequency (RF) maker 328.
ACK/NACK maker 312 generates under the control of harq controller 350 and provides ACK or NACK to SDU maker 314.SDU maker 314 is configured for the data block that physical layer sends.Message builder 316 generates the control message that will be sent to external node.Channel encoder 318 is encoded to the physical layer data piece of exporting from SDU maker 314 according to corresponding encoding scheme.CRC maker 322 generation error error detecting codes also append to error-detecting code from the coding stream of channel encoder 314 output.Modulator 324 is by becoming multiple code element from the bit stream of CRC maker 322 outputs with bit stream translation according to corresponding modulation scheme modulation.IFFT arithmetic unit 326 will be arranged in the frequency domain from the multiple code element of modulator 324 outputs, and converts them to the time domain OFDM code element by the IFFT computing.RF processor 328 will be up-converted into the RF signal from the baseband signal of IFFT arithmetic unit 326 outputs, and send the RF signal via antenna.
Radio receiver 330 comprises RF processor 332, FFT arithmetic unit 334, demodulator 336, CRC remover 338, channel decoder 342, ACK/NACK processor 334, SDU processor 346 and message handling device 348.
RF processor 332 will be downconverted into baseband signal at the RF signal that antenna receives.FFT arithmetic unit 334 will become the OFDM code element from the division of signal of RF processor 332 outputs, and convert them to frequency domain multiple code element by the FFT computing.Demodulator 336 will be by converting bit stream to from the multiple code element of FFT arithmetic unit 334 outputs according to the multiple code element of corresponding modulation scheme demodulation.CRC remover 338 usefulness determine whether to exist the mistake relevant with grouping from the error-detecting code of the bit stream of demodulator 336 outputs, and to the definite result of harq controller 350 notices.CRC remover 338 is removed error-detecting code from bit stream.Channel decoder 342 is decoded to the bit stream of exporting from CRC remover 338 according to corresponding encoding scheme.
ACK/NACK processor 344 is confirmed the reception of ACK or NACK, and notifies this reception to harq controller 350.That is to say whether ACK/NACK processor 344 exists the mistake relevant with the grouping that sends to harq controller 350 notices.In other words, whether ACK/NACK processor 344 has successfully received grouping to harq controller 350 notice respective nodes.SDU processor 346 will be separated into data and control message from the physical layer data piece of channel decoder 342 outputs, and control message is offered message handling device 348.Message handling device 348 is explained the control message that receives from external node.
Harq controller 350 controls are used for carrying out the function of HARQ scheme.For example, harq controller 350 control HARQ response time calculators 370 calculate the ACK/NACK transmitting time of RS, and 390 execution of control HARQ scheduler are to the scheduling of HARQ scheme.Harq controller 350 provides control information about the HARQ scheme of determining at HARQ scheduler 390 places to message builder 316, and control message maker 316 generates the control message that comprises control information.Whether harq controller 350 detects with the relevant mistake of dividing into groups according to CRC remover 338 is controlled ACK/NACK maker 312 generation ACK or NACK.
HARQ response time calculator 370 calculates the ACK/NACK transmitting time of RS.Here, the indication of ACK/NACK transmitting time is in the mapping time of reception of corresponding RS and the vertical shift between the ACK/NACK transmitting time.HARQ scheduler 390 is carried out according to the HARQ scheme and is used for the scheduling that grouping transmission, packet retransmission, control message transmission and control message are retransmitted.More specifically, the ACK/NACK transmission time information that HARQ scheduler 390 usefulness are calculated at HARQ response time calculator 370 places consists of the field value that will be included in DL mapping or the UL mapping, and therefore distributes DL or UL radio resource to send ACK/NACK.
The as shown in Figure 3 operation of the BS of structure is described below.
In the BS according to one exemplary embodiment of the present invention, HARQ response time calculator 370 uses the ACK/NACK transmitting time of retransmitting parameter value calculation RS.At this, HARQ response time calculator 370 calculates the ACK/NACK transmitting time based on equation (1).HARQ scheduler 390 is HARQ grouping radio resource allocated.Harq controller 350 provides HARQ ACK/NACK transmission time information and the resource allocation information of grouping to message builder 316.Message builder 316 generates the mapping message that comprises the ACK/NACK transmission time information.At this, the form of ACK/NACK transmission time information is different in various embodiment of the present invention.For example, the form of ACK/NACK transmission time information can be vertical shift or absolute frame number.HARQ response time calculator 370 calculates the necessary repeating transmission parameter value of ACK/NACK transmitting time can be from RS reception or known in advance.When the repeating transmission parameter value of RS in the system is all identical, be known because retransmit parameter value, so do not need to obtain the independent function of retransmitting parameter value.Be when receiving from RS when retransmitting parameter value, radio receiver 330 enters at the network of RS and receives the repeating transmission parameter value in process or the capability negotiation process, and provides the repeating transmission parameter value to harq controller 350.
In the BS according to another exemplary embodiment of the present invention, harq controller 350 control radio transmitters 310 send to each RS the ACK/NACK transmitting time are calculated necessary repeating transmission parameter value.When doing like this, be similar to exemplary embodiment described above, retransmitting parameter value can be from RS reception or known in advance.
In the BS according to exemplary embodiment of the present invention, message builder 316 generates the UL mapping that comprises ACK/NACK sending zone assignment information.ACK/NACK sending zone assignment information is included in the UL mapping, and indication is for the resource area of the ACK/NACK that carries RS.ACK/NACK sending zone assignment information can be constituted as the information element (IE) of " ACKCH_Region_Allocation_IE " by name.ACK/NACK sending zone assignment information comprises that notifying which frame to carry will pass through the frame offset information that it sends the grouping of ACK/NACK, and wherein indicated resource belongs to described grouping.Replacedly, replace offset information, can use in the Arq channel id (ACID) of the connection identifier (CID (CID) of absolute frame number, RS or MS and HARQ grouping or the Sub-Packet ID (SPID).
Explain now the as shown in Figure 3 operation of the RS of structure.
In the RS according to one exemplary embodiment of the present invention, radio receiver 330 receives the ACK/NACK transmission time information from BS, and the ACK/NACK transmission time information that receives is offered harq controller 350.The ACK/NACK transmission time information is included in the mapping message of the resource allocation information of notifying respective packets.At this, the form of ACK/NACK transmission time information according to various embodiments of the present invention and different.For example, the form of ACK/NACK transmission time information can be vertical shift or absolute frame number.Harq controller 350 control radio transmitters 310 send the ACK/NACK of respective packets according to the ACK/NACK transmission time information that receives.Because RS does not calculate the ACK/NACK transmission time information in one exemplary embodiment of the present invention, so HARQ response time calculator 370 is not provided in RS.When RS need to send its repeating transmission parameter value, radio transmitter 310 entered in process or the capability negotiation process at network and sends the repeating transmission parameter value to BS.
In the RS according to another exemplary embodiment of the present invention, radio receiver 330 receives the repeating transmission parameter value of other RS from BS, and the repeating transmission parameter value that receives is offered harq controller 350.HARQ response time calculator 370 usefulness are calculated its ACK/NACK transmitting time from the repeating transmission parameter value of other RS that harq controller 350 provides.At this, HARQ response time calculator 370 calculates the ACK/NACK transmitting time based on equation (1).Harq controller 350 control radio transmitters 310 send the ACK/NACK of respective packets according to the ACK/NACK transmitting time.
In the RS according to one or the other exemplary embodiment of the present invention, radio receiver 330 receives ACK/NACK sending zone assignment information.ACK/NACK sending zone assignment information is included in the UL mapping, and indication is for the resource area of the ACK/NACK that carries RS.ACK/NACK sending zone assignment information can be constituted as the IE of " ACKCH_Region_Allocation_IE " by name.ACK/NACK sending zone assignment information comprises that notifying which frame to carry will pass through the frame offset information that it sends the grouping of ACK/NACK, and wherein indicated resource belongs to described grouping.Replacedly, replace offset information, can use among the ACID of the CID of absolute frame number, RS or MS and HARQ grouping or the SPID.Controller 350 control radio transmitters 310 send the ACK/NACK of respective packets according to ACK/NACK sending zone assignment information.
Fig. 4 illustrates the operation according to the BS in multihop relay wireless communication system of exemplary embodiment of the present invention.
In step 401, BS determines whether to be necessary to collect the repeating transmission parameter value from RS.That is to say that BS determines whether all the repeating transmission parameter values of the RS in the system are identical.At this, retransmit parameter value and comprise the UL data processing delay time of RS, the DL data processing delay time of RS, the ACK/NACK transmission lag time of RS, the ACK/NACK transmission lag time of BS and the ACK/NACK transmission lag time of MS.In the time needn't collecting the repeating transmission parameter value, process proceeds to step 405.
When being necessary collect to retransmit parameter value, that is to say that when the repeating transmission parameter value of the RS in the system was not identical, in step 403, BS collected the repeating transmission parameter value of RS.At this, BS enters the repeating transmission parameter value of process or capability negotiation process collection RS by the network of RS.
In step 405, BS calculates the ACK/NACK transmitting time of RS.For example, BS calculates the ACK/NACK transmitting time of DL grouping based on equation (1).
In step 407, BS sends HARQ schedule information and grouping to RS.The HARQ schedule information is to send with the form that HARQ DL shines upon, and comprises the frame offset information of notice ACK/NACK transmitting time.Send ACK/NACK behind what frames of frame offset information indication after RS receives HARQ DL/UL mapping or grouping.Replacedly, replace offset information, can notify the ACK/NACK transmitting time with absolute frame number.
In step 409, BS sends ACK/NACK sending zone assignment information to RS.ACK/NACK sending zone assignment information is included in the UL mapping, and indication is for the resource area of the ACK/NACK that carries RS.ACK/NACK sending zone assignment information can be constituted as the IE of " ACKCH_Region_Allocation_IE " by name.ACK/NACK sending zone assignment information comprises that notifying which frame to carry will pass through the frame offset information that it sends the grouping of ACK/NACK, and wherein indicated resource belongs to described grouping.Replacedly, replace offset information, can use among the ACID of the CID of absolute frame number, RS or MS and HARQ grouping or the SPID.
In step 411, BS receives ACK/NACK via the ACK/NACK sending zone of being distributed by its scheduling from RS.
In Fig. 4, the HARQ schedule information comprises the ACK/NACK transmission time information, and ACK/NACK sending zone assignment information comprises the information of respective packets.Replacedly, the HARQ schedule information can not comprise the ACK/NACK transmission time information, and perhaps ACK/NACK sending zone assignment information can not comprise the information of respective packets.
Fig. 5 illustrates the operation according to the RS in the multihop relay wireless communication system of exemplary embodiment of the present invention.
In step 501, RS determines whether to be necessary that sending it to BS retransmits parameter value.In other words, BS determines whether all the repeating transmission parameter values of the RS in the system are identical.At this, retransmit parameter value and comprise the UL data processing delay time of RS, the DL data processing delay time of RS, the ACK/NACK transmission lag time of RS, the ACK/NACK transmission lag time of MS and the ACK/NACK transmission lag time of BS.In the time needn't collecting the repeating transmission parameter value, process proceeds to step 505.
When being necessary to send the repeating transmission parameter value, that is to say that when the repeating transmission of the RS in system parameter value was not identical, in step 503, RS sent it to BS and retransmits parameter value.RS enters to send in process or the capability negotiation process at network and retransmits parameter value.The repeating transmission parameter value that sends comprises the ACK/NACK transmission lag time of UL data processing delay time, DL data processing delay time, RS.
In step 505, RS receives HARQ schedule information and grouping from BS.At this, the HARQ schedule information is to send with the form that HARQ DL shines upon, and comprises the frame offset information of notice ACK/NACK transmitting time.Send ACK/NACK behind what frames of frame offset information indication after RS receives HARQ DL mapping or grouping.Replacedly, replace offset information, can notify the ACK/NACK transmitting time with absolute frame number.Although not shown in Fig. 5, RS determines whether to exist the mistake relevant with grouping.
In step 507, RS receives ACK/NACK sending zone assignment information from BS.ACK/NACK sending zone assignment information is included in the UL mapping, and indication is for the resource area of the ACK/NACK that carries RS.ACK/NACK sending zone assignment information can be constituted as the IE of " ACKCH_Region_Allocation_IE " by name.ACK/NACK sending zone assignment information comprises that notifying which frame to carry will pass through the frame offset information that it sends the grouping of ACK/NACK, and wherein indicated resource belongs to described grouping.Replacedly, replace offset information, can use among the ACID of the CID of absolute frame number, RS or MS and HARQ grouping or the SPID.
In step 509, RS sends ACK/NACK according to the information that receives via the ACK/NACK sending zone in step 507.
In Fig. 5, the HARQ schedule information comprises the ACK/NACK transmission time information, and ACK/NACK sending zone assignment information comprises the information of respective packets.Replacedly, the HARQ schedule information can not comprise the ACK/NACK transmission time information, and perhaps ACK/NACK sending zone assignment information can not comprise the information of respective packets.
Fig. 6 illustrates the operation according to the BS in multihop relay wireless communication system of exemplary embodiment of the present invention.
In step 601, BS determines whether to be necessary to collect the repeating transmission parameter value from RS.That is to say whether all of the RS in the BS check system are retransmitted parameter value identical.At this, retransmit parameter value and comprise the UL data processing delay time of RS, the DL data processing delay time of RS, the ACK/NACK transmission lag time of RS, the ACK/NACK transmission lag time of BS and the ACK/NACK transmission lag time of MS.In the time needn't collecting the repeating transmission parameter value, process proceeds to step 605.
When being necessary collect to retransmit parameter value, that is to say that when the repeating transmission parameter value of the RS in the system was not identical, in step 603, BS collected the repeating transmission parameter value of RS.At this, BS enters the repeating transmission parameter value of process or capability negotiation process collection RS by the network of RS.
In step 605, BS sends the repeating transmission parameter value of collected RS to each RS.
In step 607, BS sends HARQ schedule information and grouping to RS.The HARQ schedule information is to send with the form that HARQ DL shines upon.
In step 609, BS sends ACK/NACK sending zone assignment information to RS.ACK/NACK sending zone assignment information is included in the UL mapping, and indication is for the resource area of the ACK/NACK that carries RS.ACK/NACK sending zone assignment information can be constituted as the IE of " ACKCH_Region_Allocation_IE " by name.ACK/NACK sending zone assignment information comprises that notifying which frame to carry will pass through the frame offset information that it sends the grouping of ACK/NACK, and wherein indicated resource belongs to described grouping.Replacedly, replace offset information, can use among the ACID of the CID of absolute frame number, RS or MS and HARQ grouping or the SPID.
In step 611, BS receives ACK/NACK by the ACK/NACK sending zone of being distributed by its scheduling from RS.
In Fig. 6, ACK/NACK sending zone assignment information comprises the information of respective packets.Replacedly, ACK/NACK sending zone assignment information can not comprise the information of respective packets.
Fig. 7 illustrates the operation according to the RS in the multihop relay wireless communication system of exemplary embodiment of the present invention.
In step 701, RS receives from BS and retransmits parameter value.At this, retransmit parameter value and comprise the UL data processing delay time of RS, the DL data processing delay time of RS, the ACK/NACK transmission lag time of RS, the ACK/NACK transmission lag time of BS and the ACK/NACK transmission lag time of MS.
In step 703, RS receives HARQ schedule information and grouping from BS.At this, the HARQ schedule information is to send with the form that HARQ DL shines upon.Although not shown in Fig. 7, RS checks the mistake relevant with grouping.
In step 705, RS calculates its ACK/NACK transmitting time.For example, RS calculates the ACK/NACK transmitting time of DL grouping based on equation (1).
In step 707, RS receives ACK/NACK sending zone assignment information from BS.ACK/NACK sending zone assignment information is included in the UL mapping, and indication is for the resource area of the ACK/NACK that carries RS.ACK/NACK sending zone assignment information can be constituted as the IE of " ACKCH_Region_Allocation_IE " by name.ACK/NACK sending zone assignment information comprises that notifying which frame to carry will pass through the frame offset information that it sends the grouping of ACK/NACK, and wherein indicated resource belongs to described grouping.Replacedly, replace offset information, can use among the ACID of the CID of absolute frame number, RS or MS and HARQ grouping or the SPID.
In step 709, RS sends the ACK/NACK of respective packets according to the ACK/NACK transmission time information that calculates in step 705.Replacedly, RS can not calculate the ACK/NACK transmitting time, and perhaps ACK/NACK sending zone assignment information can not comprise the information of respective packets.
In Fig. 7, RS calculates the ACK/NACK transmission time information, and ACK/NACK sending zone assignment information comprises the information of respective packets.Replacedly, RS can not calculate the ACK/NACK transmission time information, and perhaps ACK/NACK sending zone assignment information can not comprise the information of respective packets.
As mentioned above, in multihop relay wireless communication system, calculate the ACK/NACK transmitting time of RS with the processing delay time of RS, BS and MS.Therefore, the ARQ scheme can be applied to multihop relay wireless communication system.
Although illustrate and described the present invention with reference to exemplary embodiments more of the present invention, but it will be appreciated by those skilled in the art that, in the situation that does not deviate from the spirit and scope of the present invention that limited by claims and content of equal value thereof, can here make in form and the various changes on the details.

Claims (17)

1. device that in based on the multihop relay wireless communication system of centralized dispatching, is used for base station (BS), this device comprises:
Calculator is used for use and retransmits the positive acknowledgement (ACK) of at least one relay station of parameter value calculation (RS)/Negative Acknowledgement (NACK) transmitting time; And
Transmitter is used for sending described ACK/NACK transmission time information to described at least one RS,
Wherein, described calculator calculates the ACK/NACK transmitting time of described at least one RS with in following at least one: the ACK/NACK transmission lag time of the ACK/NACK transmission lag time of the DL data processing delay time of the UL data processing delay time of described at least one RS, described at least one RS, the ACK/NACK processing delay time of described at least one RS, described BS and mobile radio station (MS); And
Wherein, described ACK/NACK transmission time information comprises at least one in following: the vertical shift between the transmitting time of the vertical shift between the time of reception of grouping and the transmitting time of ACK/NACK, the time of reception of ACK/NACK schedule information and ACK/NACK and be used for the absolute frame number that ACK/NACK sends.
2. device according to claim 1 also comprises:
Receiver, one at least one RS that is used for entering from carrying out network process and capability negotiation process receives described repeating transmission parameter value, and wherein said repeating transmission parameter value comprises at least one in following: up link (UL) data processing delay time, down link (DL) data processing delay time and ACK/NACK transmission lag time.
3. device according to claim 1 also comprises:
Maker is used for generating the mapping message that comprises described ACK/NACK transmission time information.
4. device according to claim 1 also comprises:
Maker be used for to generate the ACK/NACK sending zone assignment information of the information that comprises identifying the grouping corresponding with described ACK/NACK transmitting time,
Wherein, the described information that is used for identifying described grouping is at least one in following: carry the frame of described ACK/NACK sending zone assignment information and carry vertical shift, the absolute frame number that carries the frame of described grouping, connection identifier (CID (CID), Arq channel id (ACID) and Sub-Packet ID (SPID) between the frame of described grouping.
5. device that in based on the multihop relay wireless communication system of centralized dispatching, is used for relay station (RS), this device comprises:
Receiver is used for the reception sources positive acknowledgement that (BS) locates from the base station (ACK)/Negative Acknowledgement (NACK) transmission time information; And
Transmitter, be used for sent by the indicated frame of described ACK/NACK transmission time information with and the ACK/NACK that is correlated with of the corresponding grouping of described ACK/NACK transmitting time,
Wherein, described ACK/NACK transmitting time is by utilizing at least one calculating in following: the ACK/NACK transmission lag time of the ACK/NACK transmission lag time of the DL data processing delay time of the UL data processing delay time of described RS, described RS, the ACK/NACK processing delay time of described RS, described BS and mobile radio station (MS); And
Wherein, described ACK/NACK transmission time information comprises at least one in following: the vertical shift between the transmitting time of the vertical shift between the time of reception of grouping and the transmitting time of ACK/NACK, the time of reception of ACK/NACK schedule information and ACK/NACK and be used for the absolute frame number that ACK/NACK sends.
6. device according to claim 5, wherein, described transmitter enters at least one that sends among process and capability negotiation process one in following at network: up link (UL) data processing delay time, down link (DL) data processing delay time and ACK/NACK transmission lag time.
7. device according to claim 5 also comprises:
Processor, the mapping message that is used for the resource allocation information by comprising described grouping is confirmed described ACK/NACK transmission time information.
8. device according to claim 5 also comprises:
Processor be used for to confirm to be used for to identify the information of the grouping of ACK/NACK sending zone assignment information,
Wherein, the described information that is used for identifying described grouping is at least one in following: carry the frame of described ACK/NACK sending zone assignment information and carry vertical shift, the absolute frame number that carries the frame of described grouping, connection identifier (CID (CID), Arq channel id (ACID) and Sub-Packet ID (SPID) between the frame of described grouping.
9. one kind in the method for operation based on the base station in the multihop relay wireless communication system of centralized dispatching (BS), and the method comprises:
The positive acknowledgement (ACK) of use repeating transmission at least one relay station of parameter value calculation (RS)/Negative Acknowledgement (NACK) transmitting time; And
Send described ACK/NACK transmission time information to described at least one RS,
Wherein, calculate described ACK/NACK transmitting time with in following at least one: the ACK/NACK transmission lag time of the ACK/NACK transmission lag time of the DL data processing delay time of the UL data processing delay time of described at least one RS, described at least one RS, the ACK/NACK processing delay time of described at least one RS, described BS and mobile radio station (MS); And
Wherein, described ACK/NACK transmission time information comprises at least one in following: the vertical shift between the transmitting time of the vertical shift between the time of reception of grouping and the transmitting time of ACK/NACK, the time of reception of ACK/NACK schedule information and ACK/NACK and be used for the absolute frame number that ACK/NACK sends.
10. method according to claim 9 also comprises:
Receive described repeating transmission parameter value from carrying out at least one RS of one that network enters process and the capability negotiation process, wherein said repeating transmission parameter value comprises at least one in following: up link (UL) data processing delay time, down link (DL) data processing delay time and ACK/NACK transmission lag time.
11. method according to claim 9, wherein, described ACK/NACK transmission time information is included in the mapping message.
12. method according to claim 9 also comprises:
Generation comprises identifying the ACK/NACK sending zone assignment information of the information of the grouping corresponding with described ACK/NACK transmitting time,
Wherein, the described information that is used for identifying described grouping is at least one in following: carry the frame of described ACK/NACK sending zone assignment information and carry vertical shift, the absolute frame number that carries the frame of described grouping, connection identifier (CID (CID), Arq channel id (ACID) and Sub-Packet ID (SPID) between the frame of described grouping.
13. one kind in the method for operation based on the relay station in the multihop relay wireless communication system of centralized dispatching (RS), the method comprises:
The reception sources positive acknowledgement that (BS) locates from the base station (ACK)/Negative Acknowledgement (NACK) transmission time information; And
In the frame indicated by described ACK/NACK transmission time information, send with and the ACK/NACK that is correlated with of the corresponding grouping of described ACK/NACK transmitting time,
Wherein, described ACK/NACK transmitting time is by utilizing at least one calculating in following: the ACK/NACK transmission lag time of the ACK/NACK transmission lag time of the DL data processing delay time of the UL data processing delay time of described RS, described RS, the ACK/NACK processing delay time of described RS, described BS and mobile radio station (MS); And
Wherein, described ACK/NACK transmission time information comprises at least one in following: the vertical shift between the transmitting time of the vertical shift between the time of reception of grouping and the transmitting time of ACK/NACK, the time of reception of ACK/NACK schedule information and ACK/NACK and be used for the absolute frame number that ACK/NACK sends.
14. method according to claim 13 also comprises: enter at least one that sends among process and capability negotiation process one in following at network: up link (UL) data processing delay time, down link (DL) data processing delay time and ACK/NACK transmission lag time.
15. method according to claim 13, wherein, the mapping message of the resource allocation information by comprising described grouping receives described ACK/NACK transmission time information.
16. method according to claim 13 also comprises:
Confirm to be used for identifying the information of the grouping in the assignment information of ACK/NACK sending zone,
Wherein, the described information that is used for identifying described grouping is at least one in following: carry the frame of described ACK/NACK sending zone assignment information and carry vertical shift, the absolute frame number that carries the frame of described grouping, connection identifier (CID (CID), Arq channel id (ACID) and Sub-Packet ID (SPID) between the frame of described grouping.
17. one kind in the method for operation based on the relay station in the multihop relay wireless communication system of centralized dispatching (RS), the method comprises:
(BS) receives the repeating transmission parameter value of one or more other RS from the base station;
Use described repeating transmission parameter value calculation positive acknowledgement (ACK)/Negative Acknowledgement (NACK) transmitting time; And
Send ACK/NACK according to the ACK/NACK transmission time information that calculates,
Wherein, described repeating transmission parameter value comprises at least one in following: the up link of one or more other RS (UL) data processing delay time, down link (DL) the data processing delay time of one or more other RS and the ACK/NACK transmission lag time of one or more other RS; And
Wherein, calculate described ACK/NACK transmitting time with in following at least one: the ACK/NACK transmission lag time of the ACK/NACK transmission lag time of the DL data processing delay time of the UL data processing delay time of described RS, described RS, the ACK/NACK processing delay time of described RS, described BS and mobile radio station (MS).
CN2008801060854A 2007-09-08 2008-09-08 Apparatus and method for determining time to response of retransmission in a multihop relay wireless communication system Expired - Fee Related CN101796763B (en)

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