CN103973422A - Method and user equipment for supporting retransmission in wireless communication system - Google Patents

Abstract

The invention relates to a method and user equipment for supporting retransmission in a wireless communication system. A method of supporting hybrid automatic repeat request (HARQ) includes receiving an initial uplink grant on a downlink channel, transmitting uplink data on an uplink channel using the initial uplink grant, receiving a request for retransmission of the uplink data, determining at least one transmission parameter of a channel quality indicator (CQI) from the initial uplink grant, multiplexing retransmission data of the uplink data with the CQI, and transmitting the multiplexed data on the uplink channel. Amount of resources for transmission of the CQI is determined based on the at least one transmission parameter.

Description

For method and the subscriber equipment retransmitted wireless communication system support

The application is to be that February 2, international application no in 2009 are the divisional application of the Chinese patent application that PCT/KR2009/000499, national applications number are 200980104009.4, denomination of invention is " for supporting the method and apparatus of HARQ " applying date.

Technical field

The present invention relates to radio communication, relate more specifically to support the method and apparatus of mixed automatic retransfer request (HARQ) in wireless communication system.

Background technology

Wireless communication system is deployed in the whole world widely, so that the various types of communication services such as voice or data to be provided.Generally, wireless communication system is multi-address system, and it can for example, be supported and the communicating by letter of multiple users by sharing available system resource (, bandwidth, through-put power etc.).The example of multi-address system comprises code division multiple access (CDMA) system, frequency division multiple access (FDMA) system, time division multiple access (TDMA) system, OFDM (OFDMA) system, single-carrier frequency division multiple access (SC-FDMA) system etc.

Current development in advanced wireless communication has caused spectrum efficiency that needs are high and has communicated by letter reliably.Unfortunately, the packet error that the interference producing by fading channel environment with from various sources causes makes the capacity of whole system limited.

Mixed automatic retransfer request (HARQ) is the ARQ agreement that combines forward error correction (FEC), and is considered as consumingly one of sophisticated technology for following reliable communication.HARQ scheme can be mainly divided into two types.One is that HARQ-chase merges (CC), it is disclosed in hereinafter: D.Chase, Code Combining:A maximum-likelihooddecoding approach for combining an arbitrary number of noisy packets, IEEE Trans.on Commun., Vol.33, pp.593-607, in May, 1985.Another kind is HARQ steadily increase redundancy (IR).In HARQ-CC, in the time mistake being detected by Cyclic Redundancy Check in the grouping that receiver sends in decoding, the same packets with identical modulation and coding is resent to receiver.Meanwhile, in order to realize coding gain, HARQ-IR retransmits different groupings, wherein, can more than deleting, manipulate parity bits with retransmitting.In order to carry out HARQ, need exchange to be used to indicate affirmative acknowledgement (ACK)/negative response (NACK) information that whether needs repeating transmission.

Adaptive modulation and coding (AMC) is also the technology for reliable communication is provided.Base station (BS) is by being used the CQI (CQI) receiving from subscriber equipment (UE) to be identified for modulation and the encoding scheme (MCS) of transmission.Usually, CQI is the index that the entity of the MCS table of multiple MCS is shown.UE is by sending CQI by two kinds of methods.One is periodically to send CQI.Another kind is to send CQI under the request of BS.

Third generation partner program (3GPP) Long Term Evolution (LTE) is a part that uses the Universal Mobile Telecommunications System (E-UMTS) of the evolution of the universal terrestrial radio access (E-UTRA) of evolution, and, in down link, adopt OFDMA and in up link, adopt SC-FDMA.The resource of 3GPP LTE is distributed based on dynamic dispatching.The downlink physical channel of 3GPP LTE can be divided into for the physical downlink control channel of bearing resource assignment information (PDCCH) with for the physical down link sharing channel (PDSCH) of carries downlink data.Uplink physical channel can be divided into physical uplink control channel (PUCCH) for carrying uplink control information and for carrying the physical uplink link sharing channel (PUSCH) of uplink data.In downlink transmission, first receiving downlink license on PDCCH of UE, is then being permitted receiving downlink data on denotable PDSCH by down link.In ul transmissions, UE is receiving uplink license on PDCCH, is then being permitted to send uplink data on denotable PUSCH by up link.Dynamic dispatching is the method that can carry out efficient resource distribution.But, UE always first receiving downlink/up link permit to send and/or receive data.

Signaling consumption is the main cause of low transmission efficiency and low frequency efficiency.In dynamic dispatching, except the reception of PDCCH, carry out HARQ operation and CQI transmission by using such as multiple signaling manipulations of the exchange of the transformation parameter of the exchange of ACK/NACK information, CQI etc.

Therefore, need to a kind ofly can reduce the method for being transmitted the signaling consumption causing in the process of carrying out HARQ by CQI.

Summary of the invention

Technical problem

The invention provides a kind of method of multiplexing and transmitting channel quality indicator (CQI) and retransmission data.

Technical scheme

A kind of method of the support mixed automatic retransfer request (HARQ) in wireless communication system is provided in one aspect.Described method comprises: on downlink channel, receive initial uplink license; Use described initial uplink license on uplink channel, to send uplink data; Receive for the request of retransmitting described uplink data; Determine at least one transformation parameter of CQI (CQI) from described initial uplink license; By multiplexing to the retransmission data of described uplink data and described CQI, wherein, be identified for the stock number of the transmission of described CQI based on described at least one transformation parameter; And, on described uplink channel, send described multiplexing data.

In certain embodiments, described method may further include: receive the repeating transmission up link license for the repeating transmission of described uplink data, wherein, by carry out the retransmission data of multiplexing described uplink data with described repeating transmission up link license.Can comprise the request for reporting described CQI in described repeating transmission up link license.

By using the license of described initial uplink, retransmission data that can multiplexing described uplink data.Described downlink channel can be physical downlink control channel (PDCCH), and described uplink channel can be physical uplink link sharing channel (PUSCH).

At least one transformation parameter of described CQI can be relevant with encoding scheme (MCS) to the modulation of described CQI.Can determine at least one transformation parameter of described CQI, so that the MCS of described CQI is identical with the MCS of described uplink data.

In yet another aspect, provide a kind of equipment for radio communication.Described equipment comprises: radio frequency (RF) unit, for sending and receiving radio signal, and, processor, itself and described RF element coupling, and be configured to receive initial uplink license on downlink channel, permit and on uplink channel, send uplink data by described initial uplink, receive retransmitting the request of described uplink data, determine at least one transformation parameter of CQI from described initial uplink license, by multiplexing to the retransmission data of described uplink data and described CQI, wherein, be identified for the stock number of the transmission of described CQI based on described at least one transformation parameter, and, described processor is configured to send multiplexing data on described uplink channel.

Beneficial effect

Propose to send in a kind of process carrying out mixed automatic retransfer request (HARQ) method of retransmission data and CQI (CQI).Therefore, can accurately carry out HARQ and adaptive modulation and coding (AMC) operation, and, signaling consumption can be reduced.

Brief description of the drawings

Fig. 1 illustrates wireless communication system.

Fig. 2 is illustrated in the structure of the radio frame in third generation partner program (3GPP) Long Term Evolution (LTE).

Fig. 3 illustrates the example arrangement of downlink subframe.

Fig. 4 is illustrated in the structure of the uplink sub-frames in 3GPP LTE.

Fig. 5 illustrates up link mixed automatic retransfer request (HARQ) and CQI (CQI) transmission.

Fig. 6 is illustrated in the dynamic dispatching in ul transmissions.

Fig. 7 is illustrated in data on physical uplink link sharing channel (PUSCH) and the multiplexing exemplary diagram of control information.

Fig. 8 is illustrated in the resource mapping on PUSCH.

Fig. 9 illustrates the flow chart of HARQ method according to an embodiment of the invention.

Figure 10 illustrates the flow chart of HARQ method in accordance with another embodiment of the present invention.

Figure 11 illustrates the flow chart of HARQ method in accordance with another embodiment of the present invention.

Figure 12 illustrates the flow chart of HARQ method in accordance with another embodiment of the present invention.

Figure 13 is the block diagram illustrating according to an embodiment of the invention for the equipment of radio communication.

Embodiment

Technology described herein can be in various wireless communication systems, such as code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), OFDM (OFDMA), single-carrier frequency division multiple access (SC-FDMA) etc.Can use such as the radiotechnics of universal terrestrial radio access (UTRA) or CDMA-2000 and realize CDMA.Can use such as the radiotechnics of global system for mobile communications (GSM)/general packet radio service (GPRS)/enhanced data rates for gsm evolution (EDGE) and realize TDMA.Can use such as IEEE (IEEE) 802.11(Wi-Fi), IEEE802.16(WiMAX), the UTRA(E-UTRA of IEEE802.20, evolution) etc. radiotechnics realize OFDMA.UTRA is a part of Universal Mobile Telecommunications System (UMTS).Third generation partner program (3GPP) Long Term Evolution (LTE) is to use the evolution UMTS(E-UMTS of E-UTRA) a part.3GPP LTE uses OFDMA in down link, and in up link, uses SC-FDMA.

For clear, explanation below will concentrate on 3GPP LTE.But technical characterictic of the present invention is not limited to this.

Fig. 1 illustrates wireless communication system.

Referring to Fig. 1, wireless communication system 10 comprises at least one base station (BS) 11.BS11 (is commonly referred to as community, cell) to specific geographic area, and 15a, 15b and 15c provide communication service.Community can be divided into multiple regions (being called sector, sector).Subscriber equipment (UE) 12 can be that fix or mobile, and can call with other term such as mobile radio station (MS), user terminal (UT), subscriber station (SS), wireless device, PDA(Personal Digital Assistant), radio modem, handheld device etc.BS11 is generally the fixed station of communicating by letter with UE12, and can call with other term, such as the Node B (eNB) of evolution, base transceiver station (BTS), access point etc.

Below, down link (DL) represents the communication link from BS to UE, and up link (UL) represents the communication link from UE to BS.In DL, transmitter can be a part of BS, and receiver can be a part of UE.In UL, transmitter can be a part of UE, and receiver can be a part of BS.

Wireless communication system can support uplink and/or down link mixed automatic retransfer request (HARQ).In addition, can use CQI (CQI) to support adaptive modulation and coding (AMC).

CQI indicating downlink downlink channel state, and can comprise CQI index and/or pre-coding matrix index (PMI).Each entity of CQI index instruction modulation and encoding scheme (MCS) table, described modulation and encoding scheme (MCS) table comprises the multiple entities that configure by assembly coding rate and modulation scheme.PMI is the index of the pre-coding matrix based on code book.CQI can indicate the channel status of some frequency bands included in the channel status of Whole frequency band and/or Whole frequency band.

Fig. 2 is illustrated in the structure of the radio frame in 3GPP LTE.Radio frame comprises 10 subframes.A subframe comprises two time slots.Be defined as Transmission Time Interval (TTI) for the time that sends a subframe.For example, a subframe can have the length of 1 millisecond (ms), and a time slot can have the length of 0.5 millisecond.A time slot comprises multiple SC-FDMA symbols (for example, 7 SC-FDMA symbols) in time domain, and comprises multiple Resource Block (RB) at frequency domain.In up link, use in the 3GPP LTE of SC-FDMA symbol, SC-FDMA symbol represents a symbol period.According to system, SC-FDMA symbol also can be called as OFDMA symbol or symbol period.RB is resource allocation unit, and comprises multiple continuous subcarriers at a time slot.

The structure of radio frame is only shown for exemplary object.Therefore, can revise in every way the quantity of SC-FDMA symbol included in the quantity of time slot included in the quantity of subframe included in radio frame or subframe or time slot.

Fig. 3 illustrates the example arrangement of downlink subframe.This subframe comprises two continuous slots.Be arranged in anterior maximum three OFDM symbols of the first time slot of this downlink subframe corresponding to the control area that will be assigned with physical downlink control channel (PDCCH).Remaining OFDM symbol is corresponding to the data area that will be assigned with physical down link sharing channel (PDSCH).On an OFDM symbol of subframe, send physical control format indicator channel (PCFICH), and physical control format indicator channel (PCFICH) the carrying information relevant with OFDM symbol quantity for send PDCCH in subframe.

The license of PDCCH carries downlink, the resource of the downlink transmission of this down link permission report on PDSCH is distributed.More specifically, transformat and the resource that PDCCH can carries downlink shared channel (DL-SCH) distributed, the startup of the paging information in paging channel (PCH), the system information on DL-SCH, resource distribution such as the senior control message of the accidental access response sending on PDSCH, transmission power control commands, internet protocol voice (VoIP) etc.And PDCCH can carry up link license, this up link license distributes to the resource of UE reporting uplink link transmission.PCFICH is the quantity for the OFDM symbol of PDCCH to UE report, and send PCFICH in each subframe.Physical mixed ARQ indicator channel (PHICH) is the response of ul transmissions, and carrying HARQ affirmative acknowledgement (ACK)/negative response (NACK) signal.

Fig. 4 is illustrated in the structure of the uplink sub-frames in 3GPP LTE.

Referring to Fig. 4, uplink sub-frames can be divided into control area and data area in frequency domain.Control area is assigned with the physical uplink control channel (PUCCH) for carrying uplink control information.Data area is assigned with the physical uplink link sharing channel (PUSCH) for carrying user data.In order to keep single carrier property, a UE sends PUCCH and PUSCH when different.

Be assigned to the RB couple of subframe for the PUCCH of a UE.Right RB takies the different sub carrier in corresponding two time slots to belong to this RB.This is called as the RB that distributes to PUCCH to frequency hopping on boundary of time slot.

Fig. 5 illustrates uplink HARQ and CQI transmission.

Referring to Fig. 5, once on PDSCH, receive uplink data 100 from UE, BS in the past after special time, on PHICH, send for the ack/nack signal 101 of uplink data 100.In the time receiving uplink data 100, BS can send PHICH in the past in the time corresponding to 4 TTI.But, the invention is not restricted to this.If successfully decode uplink data, ack/nack signal 101 is ack signals.If unsuccessful ground decode uplink data, ack/nack signal 101 is NACK signals.In the time that ack/nack signal 101 is confirmed as NACK signal, the retransmitted BS that gives of the retransmission data 110 of uplink data 100.Can carry out repeating transmission until receive ack signal, maybe can carry out and retransmit the number of times that reaches corresponding with retransmitting trial number.In the time that the ack/nack signal 111 for retransmission data 110 is confirmed as ack signal, UE can send new uplink data 120 to BS.

Can dynamically report for the resource of the ack/nack signal of uplink/downlink data and distribute or transmission time points by signaling by BS, or can distribute or transmission time points according to the resource that the resource of uplink/downlink data is distributed or transmission time points is intended for the ack/nack signal of uplink/downlink data.

UE can by measure that downlink channel status is come periodically and/or aperiodicity to BS report CQI.In the time periodically reporting CQI, this means that the cycle that sends CQI and need not determine according to predetermined period or by BS receives other request from BS.When aperiodicity while reporting CQI, this means in response to the request from BS and send CQI.Can on PUCCH or PUSCH, send CQI.In the time of CQI and data-reusing, always on PUSCH, send CQI.CQI180 and 184 is sent separately, and can on PUCCH or PUSCH, be sent out.CQI182 is sent out together with uplink data, and can only on PUSCH, be sent out.The CQI sending on PUSCH can be periodicity CQI or aperiodicity CQI.BS can carry out downlink scheduling with CQI.

In the following description, uplink HARQ will be described.But technical characterictic of the present invention will be easily applied to downlink HARQ by those of ordinary skill in the art.

Fig. 6 is illustrated in the dynamic dispatching in ul transmissions.

Referring to Fig. 6, for ul transmissions, UE sends dispatch request (SR) to BS on PUCCH.In the time that UE request BS distributes uplink radio resources, use SR.SR is a kind of preliminary information exchange for exchanges data.For UE sends uplink data to BS, first by asking radio resources allocation with SR.In response to SR, BS sends up link license to UE on PDCCH.Up link license comprises the distribution of uplink radio resources.UE is by using distributed uplink radio resources to send uplink data on PUSCH.

Fig. 7 is illustrated in data on PUSCH and the multiplexing exemplary diagram of control information.PUSCH is by carrying data and/or control information by the Resources allocation of up link license.

Referring to Fig. 7, provide data bit a with the form of a transmission block for each TTI ₀, a ₁..., a _a-1.First, to data bit a ₀, a ₁..., a _a-1additional cycles redundancy check (CRC) parity bits p ₀, p ₁..., p _l-1, to produce the bit b that has added CRC ₀, b ₁..., b _b-1(step 200).At this, B=A+L.Equation 1 below illustrates a _kand b _kbetween relation.

[mathematical expression 1]

B _k=a _k| for k=0,1 ..., 4-1|

B _k=p _k-Afor k=A, A+1 ..., A+L-1|

Taking code block (code block) as unit to having added the bit b of CRC ₀, b ₁..., b _b-1do segmentation, and, taking code block as unit again additional CRC parity bits (step 210).C _r0, c _r1..., c _{r (Kr-1)}be illustrated in the bit sequence of exporting after this code block segmentation.At this, if the sum of code block is C, r represents code block numbering, and Kr represents the bit number for code block numbering r.

For given code block, on bit sequence, carry out chnnel coding (step 220).D ⁽ⁱ⁾ ₀, d ⁽ⁱ⁾ ₁..., d ⁽ⁱ⁾ _dthe bit of-1 presentation code, D represents the number of coded bits of each output stream, and i represents from the label of the bit stream of encoder output.

Bit for coding is carried out rate-matched (step 230).Then, for the bit run time version piece serial connection (step 240) through rate-matched.Like this, produce sequence of data bits f ₀, f ₁..., f _g-1.At this, G represents the sum of the coded-bit for sending the bit that is different from the bit using when the multiplexing control information on PUSCH in control information is transmitted.

Control information can be re-used together with data.Data and control information can be used different encoding rates by the coded identification of dividing the varying number that is used in its transmission.Below, CQI is taken as control information.

For CQI value o ₀, o ₁..., o _o-1(wherein, O is the quantity of CQI bit) carries out chnnel coding, to produce control information bit sequence q ₀, q ₁..., q _q-1(step 260).CQI can use the independent channel coding different from chnnel coding for data.For example, in the time that block code (block code) (32, O) is used as the chnnel coding of CQI, basic sequence M _i,nas shown in table 1 below.

[table 1]

B ₀, b ₁..., b ₃₁represent the intermediate sequence for CQI chnnel coding, and can be produced by equation 2 below.

[mathematical expression 2]

, wherein, i=0,1,2 ..., 31

According to equation 3 below by cyclically repeating this intermediate sequence b ₀, b ₁..., b ₃₁produce control information bit sequence q ₀, q ₁..., q _q-1.

[mathematical expression 3]

Q _i=b _(imod31), wherein, i=0,1 ..., Q-1

Produce as mentioned above sequence of data bits f ₀, f ₁..., f _g-1, and by itself and control information bit sequence q ₀, q ₁..., q _q-1be multiplexed with together multiplexed sequence g ₀, g ₁..., g _h-1(step 270).In multiplexing process, can first arrange control information bit sequence q ₀, q ₁..., q _q-1, thereafter can layout data bit sequence f ₀, f ₁..., f _g-1., if H=G+Q can configure [g ₀, g ₁..., g _h-1] such as being [q ₀, q ₁..., q _q-1, f ₀, f ₁..., f _g-1].

Through multiplexing sequence g ₀, g ₁..., g _h-1be mapped as modulation sequence h ₀, h ₀..., h _{h '-1}(step 280).At this, h _irepresent the modulation symbol on planisphere, and H '=H/Q _m.Q _mrepresent the bit number for each modulation symbol of modulation scheme.For example, in the time that Quadrature Phase Shift Keying (QPSK) is used as modulation scheme, Q _m=2.

Modulation sequence h ₀, h ₀..., h _{h '-1}each modulation symbol be mapped to the resource element (resource element) (step 290) for PUSCH.This resource element is the allocation unit in subframe, and this subframe limits with a SC-FDMA symbol (or OFDMA symbol) and a subcarrier.Mode with time priority is shone upon modulation symbol.Fig. 8 is illustrated in the resource mapping on PUSCH.A time slot comprises 7 SC-FDMA symbols.In each time slot, the 4th SC-FDMA symbol is used to send reference signal.Therefore, in a subframe, nearly 12 SC-FDMA symbols can be used to PUSCH.Modulation sequence h ₀, h ₀..., h _{h '-1}first in SC-FDMA symbol direction, be mapped in the first subcarrier region, then also in SC-FDMA symbol direction, be mapped in the second subcarrier region.Modulation sequence h ₀, h ₀..., h _{h '-1}front portion corresponding to CQI.Therefore, first CQI is mapped to the resource element in front subcarrier region.

As mentioned above, in order to send CQI on PUSCH, need to first determine and send the needed stock number of CQI.Transformation parameter based on using in CQI transmission (for example, MCS etc.) is determined stock number.Represent the parameter for CQI transmission for the transformation parameter of CQI, and comprise the various parameters for determining MCS and/or stock number.If the quantity Q ' by the modulation symbol for CQI expresses stock number, can determine Q ' by equation 4 below.

[mathematical expression 4]

$Q^{\′}=\left[\frac{(O+L)\·M_{\mathrm{sc}}\·N_{\mathrm{symb}}}{{10}^{\frac{-\mathrm{\Δ}}{10}}\·\underset{r=0}{\overset{C-1}{\mathrm{\Σ}}}{K}_r}\right]$

In equation 4, O represents the quantity of CQI bit, and L represents the quantity of CRC bit, and Δ represents parameter, and C represents the sum of code block, and Kr represents the quantity for the bit of code block numbering r, M _scbe illustrated in the quantity of the subcarrier using in PUSCH transmission, and N _symbbe illustrated in the quantity of the SC-FDMA symbol using in PUSCH transmission.Can be C, Kr, M for the transformation parameter of determining above-mentioned Q ' _scand N _symbin at least one.

Now, a kind of for carrying out the multiplexing retransmission data of process of HARQ and CQI and sending the method for multiplexing result by PUSCH by describing.

When carrying out when HARQ, can be by by CQI and primary data or the multiplexing CQI that sends of retransmission data.This situation can be when CQI transmission cycle in periodic CQI report overlaps (coincide) with repetition cycle or generation in the time transmitting the response of asking and overlap with repetition cycle for CQI in acyclic CQI report.

When by CQI and retransmission data when multiplexing, there is for example, the problem for the transformation parameter of CQI (, MCS etc.) about how to confirm.This problem relate to how to confirm for the transformation parameter of the multiplexing CQI of retransmission data.Even when this is because also need to reports the transformation parameter transmitting for CQI in addition to UE by BS in the time retransmitting, the report of transformation parameter can be used as signaling consumption.

If send CQI in the time of retransmission data, can determine CQI transformation parameter according to the transformation parameter of using in initial data transfer.For example, in the time of retransmission data, the MCS using in initial data transfer is used to CQI transmission.

Fig. 9 illustrates the flow chart of HARQ method according to an embodiment of the invention.

Referring to Fig. 9, in step S510, BS sends initial uplink license on PDCCH.In HARQ method, this initial uplink license comprises the radio resource allocation information for initial uplink data.At step S520, UE is being permitted to send uplink data on denotable PUSCH by initial uplink.

In step S530, in the time the decoding error of uplink data being detected, BS sends NACK signal as re-send request may.Can on PHICH, send NACK signal.

In step S560, if the transmission subframe of retransmission data overlaps with the transmission subframe of CQI, UE determines the transformation parameter of CQI from initial uplink license.This transformation parameter is the parameter that sends the needed amount of radio resources of CQI for determining, and can be relevant to the MCS of CQI.For example, in the time determining the amount of radio resources of CQI by equation 4, can obtain transformation parameter C, Kr, M from initial uplink license _scand N _symbat least one.

In step S570, UE is by carrying out the retransmission data of multiplexing CQI and uplink data with transformation parameter.In step S580, UE sends multiplex data on PUSCH.

In HARQ retransmits, in the time that retransmission data is sent together with CQI, permit the MCS that determines CQI according to initial uplink, there is no the other signaling of the transformation parameter of the CQI for being re-used to make to reduce signaling consumption.

Figure 10 illustrates the flow chart of HARQ method in accordance with another embodiment of the present invention.

Referring to Figure 10, in step S610, BS sends initial uplink license on PDCCH.In step S620, UE is being permitted to send uplink data on denotable PUSCH by initial uplink.In step S630, in the time the decoding error of uplink data being detected, BS sends NACK signal as re-send request may.

In step S640, BS sends and retransmits license on PDCCH.This repeating transmission license comprises the radio resource allocation information for the retransmission data relevant with uplink data.

In step S650, if the transmission subframe of retransmission data overlaps with the transmission subframe of CQI, UE determines the transformation parameter of CQI from initial uplink license.In step S670, UE is by carrying out the repeating transmission of multiplexing CQI and uplink data with this transformation parameter.In this case, use from retransmitting and permitted the next multiplexing retransmission data of obtainable transformation parameter, and use from initially being permitted obtainable transformation parameter and carry out multiplexing CQI.In step S680, UE sends multiplex data on PUSCH.

Figure 11 illustrates the flow chart of HARQ method in accordance with another embodiment of the present invention.

Referring to Figure 11, in step S700, BS configuration cycle property CQI.UE periodically sends CQI according to the cycle of being determined by BS.In step S710, BS sends initial uplink license on PDCCH.In HARQ method, initial uplink license comprises the radio resource allocation information for initial uplink data.In step S720, UE is being permitted to send uplink data on denotable PUSCH by initial uplink.

In step S730, UE presses CQI transmission cycle and sends CQI.In this case, if there is available PUCCH resource, can on PUCCH, send CQI.In step S740, in the time the decoding error of uplink data being detected, BS sends NACK signal as re-send request may.

In step S760, if the transmission subframe of retransmission data overlaps with the transmission subframe of CQI, UE determines the transformation parameter of CQI from initial uplink license.

In step S770, UE is by carrying out the retransmission data of multiplexing CQI and uplink data with this transformation parameter.In step S780, UE sends multiplex data on PUSCH.

Figure 12 illustrates the flow chart of HARQ method in accordance with another embodiment of the present invention.

Referring to Figure 12, in step S810, BS sends initial uplink license on PDCCH.In step S820, UE is being permitted to send uplink data on denotable PUSCH by initial uplink.In step S830, in the time the decoding error of uplink data being detected, BS sends NACK signal as re-send request may.

In step S840, BS sends license and the CQI request of retransmitting on PDCCH.CQI request is optionally to be made for asking UE to send the signal of CQI by BS.Although send CQI request on PDCCH, can send CQI request to UE by other message together with retransmitting license.

In step S860, UE determines the transformation parameter of CQI from initial uplink license according to the CQI request of BS.In step S870, UE is by carrying out the repeating transmission of multiplexing CQI and uplink data with this transformation parameter.In this case, use from retransmitting and permitted the next multiplexing retransmission data of obtainable transformation parameter, and use from initially being permitted obtainable transformation parameter and carry out multiplexing CQI.In step S880, UE sends multiplex data on PUSCH.

Although it is multiplexing to have proposed in the above-described embodiments CQI in the time of the first repeating transmission, even send CQI by multiplexing CQI in the time that n retransmits (wherein, n>1), also can obtain CQI transformation parameter from initial uplink license.

By using the transformation parameter using to be used as CQI transformation parameter, do not need the other signaling for CQI transformation parameter in initial data transfer.

In the time carrying out HARQ, for multiplexing on PUSCH and transmission retransmission data and CQI, can not only permit but also obtain CQI transformation parameter from other licenses from initial uplink.For example, can by for the transmission parameter settings of the multiplexing retransmission data of CQI be CQI transformation parameter.This is the situation that is used to send CQI for the identical MCS of retransmission data in the time retransmitting.For another example, can be by the transformation parameter using in formerly front transmission as CQI transformation parameter.This is when multiplexing the second retransmission data and CQI, to be the situation of CQI transformation parameter by the transmission parameter settings for the first retransmission data when in the second repeating transmission.

As mentioned above, under the request of BS, send acyclic CQI.Usually, can on PDCCH, send CQI request.In this case, can send the transmission indicator for CQI transformation parameter together with CQI request.Can use the resource (or transformation parameter) of distributing to send CQI according to this transmission indicator, maybe can use the resource (or transformation parameter) of previous distribution to send CQI.

Figure 13 is the block diagram illustrating according to an embodiment of the invention for the equipment of radio communication.Equipment 50 for radio communication can be a part of UE.Equipment 50 for radio communication comprises processor 51, memory 52, radio frequency (RF) unit 53, display unit 54 and user interface elements 55.RF unit 53 is coupled to processor 51, and sends and/or receive radio signals.Memory 52 is coupled to processor 51, and storage operation system, application program and generic-document.Display unit 54 shows the much information of UE, and can use known element, such as liquid crystal display (LCD), Organic Light Emitting Diode (OLED) etc.Can come configuration user interfaces unit 55 with the combination of the known user interface such as keypad, touch-screen etc.Processor 51 is supported HARQ and AMC.Processor 51 can configure PUCCH or PUSCH, and can executing data and CQI multiplexing.Can realize by processor 51 above-described embodiment of HARQ method.

Can combine to realize the present invention with hardware, software or its.In hardware implementation mode, can realize the present invention by the one of the following that is designed to carry out above-mentioned functions: application-specific integrated circuit (ASIC) (ASIC), digital signal processor (DSP), programmable logic device (PLD), field programmable gate array (FPGA), processor, controller, microprocessor, other electronic units and combination thereof.In implement software mode, can be with realizing the present invention for the module of carrying out above-mentioned functions.Software can be stored in memory cell, and is executed by processor.Well known to a person skilled in the art that various devices can be used as this memory cell or this processor.

Although specifically illustrate and described the present invention with reference to exemplary embodiment of the present invention, but those skilled in the art can understand, in the case of not departing from the spirit and scope of the present invention that are defined by the claims, can carry out therein the various changes in form and details.Should only consider exemplary embodiment with illustrative meaning, instead of be thought of as the object for limiting.Therefore, scope of the present invention is not limited by detailed description of the present invention, but defined in the claims, and all differences in such scope will be interpreted as being included in the present invention.

Claims (14)

1. the method for retransmitting wireless communication system support, described method is carried out and is comprised by subscriber equipment (UE):

For the initial transmission of uplink data,

Determine the transformation parameter of the resource of instruction distribution, and

Use the described transformation parameter of the resource of the described distribution of instruction, physically the described uplink data of the upper transmission of line link shared channel (PUSCH);

For the repeating transmission of described uplink data,

By multiplexing to the retransmission data of described uplink data and CQI (CQI), be wherein that the described transformation parameter that is used to the resource of the described distribution of described initial transmission based on instruction is determined for the radio resource of described CQI; And

On described PUSCH, send the data that are re-used.

2. method according to claim 1, at least one during wherein said transformation parameter transmits with CQI (CQI) and PUSCH is associated.

3. method according to claim 1, described CQI is acyclic CQI.

4. method according to claim 1, further comprises:

Permit in the upper initial uplink that receives of physical downlink control channel (PDCCH),

Wherein said initial uplink license is used to the described initial transmission of uplink data.

5. method according to claim 1, further comprises:

In the upper request receiving for the repeating transmission of described uplink data of physics HARQ indicator channel (PHICH),

Wherein said repeating transmission is carried out in response to described request.

6. method according to claim 1, wherein said UE supports mixed automatic retransfer request (HARQ).

7. method according to claim 1, further comprises:

On PDCCH, receive and retransmit up link license,

The described retransmission data of wherein said uplink data is to send based on radio resource, and described radio resource is to determine based on described repeating transmission up link license.

8. the subscriber equipment (UE) for retransmitting wireless communication system support, described subscriber equipment (UE) comprising:

Radio frequency (RF) unit; And

Processor, described processor is configured to:

For the initial transmission of uplink data,

Determine the transformation parameter of the resource of instruction distribution, and

Use the described transformation parameter of the resource of the described distribution of instruction, physically the described uplink data of the upper transmission of line link shared channel (PUSCH);

For the repeating transmission of described uplink data,

By multiplexing to the retransmission data of described uplink data and CQI (CQI), be wherein that the described transformation parameter that is used to the resource of the described distribution of described initial transmission based on instruction is determined for the radio resource of described CQI; And

On described PUSCH, send the data that are re-used.

9. subscriber equipment according to claim 8, at least one during wherein said transformation parameter transmits with CQI (CQI) and PUSCH is associated.

10. subscriber equipment according to claim 8, described CQI is acyclic CQI.

11. subscriber equipmenies according to claim 8, wherein said processor is further configured to:

Permit in the upper initial uplink that receives of physical downlink control channel (PDCCH),

Wherein said initial uplink license is used to the described initial transmission of uplink data.

12. subscriber equipmenies according to claim 8, wherein said processor is further configured to:

In the upper request receiving for the repeating transmission of described uplink data of physics HARQ indicator channel (PHICH),

Wherein said repeating transmission is carried out in response to described request.

13. subscriber equipmenies according to claim 8, wherein said UE supports mixed automatic retransfer request (HARQ).

14. subscriber equipmenies according to claim 8, wherein said processor is further configured to:

On PDCCH, receive and retransmit up link license,

The described retransmission data of wherein said uplink data is to send based on radio resource, and described radio resource is to determine based on described repeating transmission up link license.