CN101222304B - Device and method for transmitting HARQ ACK/NACK - Google Patents
Device and method for transmitting HARQ ACK/NACK Download PDFInfo
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- CN101222304B CN101222304B CN 200710001249 CN200710001249A CN101222304B CN 101222304 B CN101222304 B CN 101222304B CN 200710001249 CN200710001249 CN 200710001249 CN 200710001249 A CN200710001249 A CN 200710001249A CN 101222304 B CN101222304 B CN 101222304B
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Abstract
The invention discloses a method for transmitting an HARQ ACK/NACK message which comprises the steps that: a first communication node sends the data containing a plurality of code blocks, here each code block is defined as a message block which is independently added with a CRC and a code; a second communication node receives data signals of the first communication node and judges whether each code block correctly receives; the second communication node respectively sends an HARQ ACK or an NACK message aiming at each code block, here each sent ACK/NACK message can occupy I branches or Q branches of at least one part of modulation symbols in the entire physical resources used to transmit the HARQ ACK/NACK messages; the first communication node receives the HARQ ACK/NACK messages sent by the second communication node and correspondingly sends new data or retransmit data. The method of the invention can increase the frequency diversity effect during the transmission of the ACK/NACK messages; when the method is used in the SCFDMA system, the method can maintain the single carrier characteristic of the SCFDMA system.
Description
Technical field
The present invention relates to wireless communication system, relate in particular a kind of in wireless communication system equipment and the method for transmitting HARQ ACK/NACK.
Background technology
Now, 3GPP standardization body has set about beginning its existing system standard is carried out long-term evolution (LTE).In the middle of numerous physical layer transmission technology, be the focus of research based on the downlink transfer technology of OFDM (OFDM) with based on the uplink technology of single-carrier frequency division multiple access access (SCFDMA).Be a kind of multi-carrier modulation communication technology on the OFDM technological essence, its basic principle is the data flow of a two-forty to be decomposed into several rate data streams transmit simultaneously on one group of mutually orthogonal subcarrier.The OFDM technology is because its multicarrier character has performance advantage aspect a lot.It is a kind of single carrier transmission technology on the SCFDMA technological essence, its signal peak-to-average is lower than (PAPR), thereby the power amplifier of portable terminal can be with higher efficient work, enlarge the coverage of residential quarter, by adding Cyclic Prefix (CP) and frequency domain equalization, it is lower that it processes complexity simultaneously.
According to existing discussion result about LTE, LTE system descending frame structure as shown in Figure 1, Radio Resource in the LTE system refers to time and the frequency resource that system or subscriber equipment can take, can (101-103) distinguish for unit with radio frames (radio frame), the time span of radio frames is identical with the time span of the radio frames of WCDMA system, and namely its time length is 10ms; Each frame is subdivided into a plurality of time slots (slot) (104-107), and present hypothesis is that each radio frames comprises 20 time slots, and the time span of time slot is 0.5ms; Each time slot comprises again a plurality of OFDM symbols, and according to present hypothesis, the time span of effective OFDM symbol is about 66.7 μ s in the LTE system.The time span of the CP of OFDM symbol can have two kinds, namely the time span of short CP is approximately 4.8 μ s, the about 16.7 μ s of the time span of long CP, long CP time slot is used for many Cell Broadcast CB/multicasts and the very large situation of radius of society, short CP time slot (108) comprises 7 OFDM symbols, and long CP time slot (109) comprises 6 OFDM symbols.According to present discussion result, Transmission Time Interval (TTI) is 1ms, namely equals the time span of two time slots.
Fig. 2 is LTE system uplink frame structure, and is similar with the downlink frame structure, and the time span of its radio frames (201,202,203) is all 10ms mutually with WCDMA; Each frame is subdivided into a plurality of time slots (204-207), and present hypothesis is that each radio frames comprises 20 time slots, and the time span of time slot is 0.5ms; Each time slot comprises again a plurality of SCFDMA symbols, according to present hypothesis, SCFDMA symbol in the LTE system is divided into two kinds, comprise two short symbols (214 in the time slot, 215), length effective time of each short symbol is about 3333 μ s, is called short block (Short block) in the current discussion; Comprise 6 long symbols (208～213) in a time slot simultaneously, each long symbol length effective time is 66.67 μ s, is called long piece (Longblock) in the current discussion.Short symbol is used for the reference information of transmission coherent demodulation, also can be used for transmit ascending data and control information simultaneously; Long symbol is used for transmit ascending data and control information.According to present discussion result, Transmission Time Interval (TTI) is 1ms, namely equals the time span of two time slots.
Fig. 3 is the signal processing of SCFDMA, transmitting terminal obtains its modulation symbol that need to send (301) through certain processing, transform to frequency domain through DFT module (301), then be mapped to the sub-carrier positions of system assignment through subcarrier mapping block (303), next return time domain through IFFT module (304) conversion, then add CP (305), then carry out follow-up operation.Attention is in order to distinguish with the DFT operation of IFFT operation (304) and execution when receiving, and the DFT operation of module (301) is called the Pre-DFT operation.
In the discussion of current LTE, the sequence that one class has a lot of good natures has been proposed, here be referred to as CAZAC (Constant Amplitude Zero Autocorrelation) sequence, this class sequence all has constant envelope in time domain and frequency domain, its Cyclic Autocorrelation Function is 0, and its Cyclic Cross-Correlation Transform function is a very little constant value.
In communication system, transmitting terminal need to send in a TTI more than an encoding block sometimes simultaneously, the encoding block here refers to the block of information of the independent CRC of interpolation and coding, correspondingly, the physical layer of receiving terminal just need to send HARQ ACK/NACK (confirming/deny) information to a plurality of encoding blocks simultaneously when carrying out HARQ (hybrid automatic repeat request) operation.A typical application is to having adopted MCW MIMO (MuItiple Codewords, Multiple In Multiple Out) system of technology, a plurality of encoding blocks of MCW MIMO are independently to add CRC and coding, and receiving terminal sends the HARQACK/NACK information to a plurality of encoding blocks simultaneously after the data of receiving MCW MIMO.
Configuration according to system, when needs send the information of the individual HARQ ACK/NACK of M (M is greater than 1), first method is to be this M ACK/NACK information correspondence mappings M bit, then this M bit is carried out combined coding, then be mapped on the physical resource for HARQ ACK/NACK and transmit.The link performance that adopts M the ACK/NACK bit that this mode sends is the same, and for instance, when M equals 2, and when sending an ACK and a NACK, ACK also is the same with the performance that NACK reaches.
Configuration according to system, when needs send the information of the individual HARQ ACK/NACK of M (M is greater than 1), second method is this M ACK/NACK information of independent transmission, and namely M ACK/NACK information is transmitted in the mode of frequency division multiplexing (FDM), time division multiplexing (TDM) or code division multiplexing (CDM).To ofdm system, when ACK/NACK is based on FDM or TDM transmission, because system is limited for the number of the subcarrier of each ACK/NACK configuration, so the frequency diversity effect that independent each ACK/NACK of transmission obtains is limited; When ACK/NACK was based on the CDM transmission, because wireless channel has frequency selectivity, each ACK/NACK of transmission is interference signal each other.To the SCFDMA system, in order to keep the character of its single carrier, FDM and CDM technology are all unavailable, if adopt the TDM technology, equal 2 as example take M, when needs sent an ACK and a NACK, it was different that the link performance of considering ACK and NACK requires, the performance requirement of General N ACK is higher than ACK, and the transmitting power that is to say these two signals is different.
Summary of the invention
The purpose of this invention is to provide a kind of in wireless communication system equipment and the method for transmitting HARQ ACK/NACK.
According to an aspect of of the present present invention, a kind of method of transmitting HARQ ACK/NACK information comprises the steps:
A) first communication node sends the data that comprise a plurality of encoding blocks, and encoding block is defined as the block of information of the independent CRC of interpolation and coding here;
B) second communication node receives the data-signal of described first communication node, and judges whether each encoding block correctly receives;
C) second communication node b above) sends out respectively HARQACK or nack message poor for each encoding block, and the ACK/NACK information of each transmission here will take I branch road or the Q branch road of at least a portion modulation symbol in all physical resources that minute are used in transmitting HARQ ACK/NACK information;
D) above a) described in first communication node receive the HARQ ACK/NACK information that described second communication node sends, correspondingly send new data or data retransmission.
According to another aspect of the present invention, a kind of transmitting terminal is processed the equipment of HARQ ack/nack signal, comprises transmission/reception, also comprises:
A) ack/nack signal maker module is used for generating the ack/nack signal that will send;
B) physical channel multiplexer module is used for the base station ack/nack signal and other physical channels is multiplexed into together.
According to another aspect of the present invention, a kind of receiving terminal is processed the equipment of HARQ ack/nack signal, comprises transmission/reception, also comprises:
A) ack/nack signal parser modules is for the information of judging each ACK/NACK that transmitting terminal sends;
B) physical channel demodulation multiplexer module is used for demultiplexing and goes out ack/nack signal.
Adopt method of the present invention, the frequency diversity effect in the time of can increasing transferring ACK/nack message when this method is used for the SCFDMA system, can keep its single-carrier nature.
Description of drawings
Fig. 1 is the downlink frame structure of LTE system;
Fig. 2 is the uplink frame structure of LTE system;
Fig. 3 is the SCFDMA signal processing;
Fig. 4 is the equipment drawing that transmitting terminal is processed ACK/NACK;
Fig. 5 is the equipment drawing that receiving terminal is processed ACK/NACK;
Fig. 6 is the schematic diagram 1 of embodiment 1;
Fig. 7 is the schematic diagram 2 of embodiment 1;
Fig. 8 is the schematic diagram 3 of embodiment 1;
Fig. 9 is the schematic diagram 4 of embodiment 1;
Figure 10 is the schematic diagram of embodiment 2;
Figure 11 is the hardware block diagram of transmitting terminal;
Figure 12 is the hardware block diagram of receiving terminal.
Embodiment
The present invention propose a kind of in wireless communication system the method for transmitting HARQ ACK/NACK information, comprise the steps:
A) first communication node sends the data that comprise a plurality of encoding blocks, and encoding block is defined as the block of information of the independent CRC of interpolation and coding here;
B) second communication node receives the data-signal of described first communication node, and judges whether each encoding block correctly receives;
C) second communication node sends respectively HARQACK or nack message for each encoding block b above), and the ACK/NACK information of each transmission here will take I branch road or the Q branch road of at least a portion modulation symbol in all physical resources that minute are used in transmitting HARQ ACK/NACK information;
D) above a) described in first communication node receive the HARQ ACK/NACK information that described second communication node sends, correspondingly send new data or data retransmission.
Definition to encoding block among the present invention is the block of information of the independent CRC of interpolation and coding, correspondingly in the HARQ operation, need to and send ACK/NACK information to each encoding block check (CRC).An important application of the present invention is to having adopted the transmission system of MCW MIMO, and the present invention is applicable to other systems that sends simultaneously a plurality of encoding blocks simultaneously.
Step c of the present invention) in, according to adopting the physical layer transmission technology in the system, modulation symbol is defined as follows: to the physical layer transmission technology based on OFDM, each modulation symbol is corresponding to a subcarrier; To the physical layer transmission technology based on SCFDMA, each modulation symbol is corresponding to a modulation symbol before the Pre-DFT operation.
Step c of the present invention is described below) first method.Here supposing the system sends ACK/NACK information based on the multiplex mode of FDM and/or TDM, be each ACK/NACK information of system configuration independent transmission on K modulation symbol, consider the resource overhead of transferring ACK/nack message, K is a smaller numeral, for example 3.According to the technology that physical layer adopts, this K modulation symbol can concentrate in an OFDM symbol or the SCFDMA symbol, also can be distributed on several OFDM symbols or the SCFDMA symbol.System need to guarantee that this K modulation symbol has measured to the greatest extent frequency diversity effect, but because K is smaller, the effect of its frequency diversity is restricted.
When needs sent HARQ ACK/NACK information to the individual encoding block of M (M is greater than 1), supposing the system distributed M doubly to the resource of the running time-frequency resource of single ACK/NACK information, i.e. MK modulation symbol resource according to certain mode.It is to guarantee to have measured to the greatest extent frequency diversity effect at this MK modulation symbol that the present invention proposes to distribute the principle of this MK modulation symbol resource.Because each modulation symbol comprises I and two branch roads of Q, the branch road (I or Q) that the present invention defines a modulation symbol is minimum resource units, and system has distributed altogether the resource of 2MK unit like this.Each ACK/NACK information in M ACK/NACK information takies the 1/M of total resources, and namely the resource of 2K unit is transmitted.The principle that disposes the resource of this 2K unit is to allow the frequency diversity maximum effect of modulation symbol at resource place of this 2K unit.Here each ACK/NACK information can repeat then to be mapped to for 2K time the resource of 2K unit, is mapped to the resource of 2K unit after also can multiplying each other the sequence that each ACK/NACK information and length are 2K.The present invention does not limit this M the sequence that the ACK/NACK information commons is identical or uses respectively different sequences.Here the resource of 2K unit being mapped to of each ACK/NACK information can be the I branch road of modulation symbol, can all be the Q branch road of modulation symbol, also can mix the I branch road and the Q branch road that use modulation symbol.For example, when M equals 2, and when system assignment 2K modulation symbol is used for this two ACK/NACK information of transmission, the resource that each ACK/NACK information takies 2K unit is transmitted, and namely each ACK/NACK information takies one of the I branch road of each modulation symbol in this 2K modulation symbol or Q branch road.
When needs send HARQ ACK/NACK information to the individual encoding block of M (M is greater than 1), in the method for the invention, a kind of method that transmitted power is set is to each ACK/NACK information, what send according to current needs is ACK information or nack message, determines that correspondingly it is mapped to the I branch road of 2K modulation symbol or the power of Q branch road.Because the reliability of General N ACK information requirements is higher than ACK information, so when generally sending nack message, the I branch road of this 2K modulation symbol or the power of Q branch road are higher than the power when sending ACK information.The method that another kind arranges transmitted power is no matter current what need to send is ACK information or nack message, and the HARQ ACK/NACK information of this M encoding block is adopted identical power transmission.
When the HARQ ACK/NACK information of needs transmission to 2 encoding blocks, and supposing the system distributes and the same number of running time-frequency resource of running time-frequency resource that transmits an ACK/NACK information, be K modulation symbol, according to top definition, at this moment system has distributed altogether the resource of 2K unit, the resource that each ACK/NACK information takies K unit is transmitted, and namely each ACK/NACK information takies one of the I branch road of each modulation symbol in this K modulation symbol or Q branch road.Here each ACK/NACK information can repeat then to be mapped to for K time the resource of K unit, is mapped to the resource of K unit after also can multiplying each other the sequence that each ACK/NACK information and length are K.The present invention does not limit the identical sequence of these 2 ACK/NACK information commons or uses respectively different sequences.Here the resource of K unit being mapped to of each ACK/NACK information can be the I branch road of modulation symbol, can all be the Q branch road of modulation symbol, also can mix the I branch road and the Q branch road that use modulation symbol.Equally, a kind of method that transmitted power is set is to each ACK/NACK information, and what send according to current needs is ACK information or nack message, determines that correspondingly it is mapped to the I branch road of K modulation symbol or the power of Q branch road.The method that another kind arranges transmitted power is no matter current what need to send is ACK information or nack message, adopts identical power to send to the HARQ ACK/NACK information of these 2 encoding blocks.
Step c of the present invention is described below) second method.This method both had been applicable to system based on the multiplex mode transmission ACK/NACK information of CDM, and the system that also is applicable to is based on the multiplex mode transmission ACK/NACK information of FDM and/or TDM.The present invention proposes two ACK/NACK information are mapped to respectively I branch road and the Q branch road of modulation symbol, then the sequence S that is this modulation symbol and length L multiplies each other, next, to ofdm system, the sequence that obtains multiplying each other maps directly on the subcarrier of physical layer; To the SCFDMA system, the Pre-DFT module of the sequence input that obtains multiplying each other is also processed.Sequence S as mentioned above can be binary sequence, and namely the value of its each element is+1 or-1, for example the WaIsh sequence; It also can be the sequence of complex values.Especially, sequence S can be the sequence with CAZAC sequence character, thereby guarantees that sequence all is constant envelope in time domain and frequency domain, and has good auto-correlation and their cross correlation.Here be that to the SCFDMA system, L equals to be used for the number of the modulation symbol of transferring ACK/nack message in a SCFDMA symbol to the definition of the length L of sequence S; To ofdm system, L can be the number that is used for the subcarrier of transferring ACK/nack message in the OFDM symbol, also can be the sum of the subcarrier of the transferring ACK/nack message that is useful in a plurality of OFDM symbols.
In the method for the invention, a kind of method that transmitted power is set is to each ACK/NACK information, and what send according to current needs is ACK information or nack message, correspondingly determines the I branch road of its modulation symbol that is mapped to or the power of Q branch road.Because the reliability of General N ACK information requirements is higher than ACK information, so when generally sending nack message, the I branch road of corresponding modulation symbol or the power of Q branch road are higher than the power when sending ACK information.The method that another kind arranges transmitted power is no matter current what need to send is ACK information or nack message, adopts identical power to send to the HARQ ACK/NACK information of these 2 encoding blocks.
Below two sections descriptions take the SCFDMA system as example, described method is equally applicable to ofdm system.To the SCFDMA system, when two ACK/NACK information of needs transmission, and system configuration ACK/NACK repeats to send this two ACK/NACK information at this k SCFDMA symbol when the individual SCFDMA symbol of k (K is greater than 1) sends.At this moment, can be mapped to the I branch road to an ACK/NACK information regularly, and another ACK/NACK information is mapped to the Q branch road, thereby form modulation symbol, transmit at this k SCFDMA symbol after multiplying each other with sequence S.Another kind method is when forming modulation symbol, the mapping ruler of this k the different ACK/NACK information of SCFDMA Transforms, be that some of them SCFDMA symbol is mapped to the I branch road to first ACK/NACK information, and second ACK/NACK information is mapped to the Q branch road; Other SCFDMA symbol is mapped to the Q branch road to first ACK/NACK information simultaneously, and second ACK/NACK information is mapped to the I branch road.
To the SCFDMA system, when needs send the individual ACK/NACK information of M (M is greater than 2), and when system configuration ACK/NACK sends at the individual SCFDMA symbol of k (K is greater than 1), above adopting only send two ACK/NACK information the time generate the method for SCFDMA symbol, send two ACK/NACK information at each SCFDMA symbol, and the ACK/NACK information that different SCFDMA sign reversings sends, thereby guarantee that the number of times that each ACK/NACK information sends equates.
Be the equipment drawing that transmitting terminal is processed the HARQ ack/nack signal as shown in Figure 4, ack/nack signal maker module 401 and physical channel multiplexer module 402 are embodiments of the present invention.Transmitting terminal is the individual ACK/NACK input information of M (M is greater than 1) ack/nack signal maker module 401, and the method that proposes according to the present invention generates ack/nack signal; Then arrive by the information multiplexing of physical channel multiplexer module 402 with other physical channels, last multiplexing signal is afterwards launched in emitter 403.
Be the equipment drawing that receiving terminal is processed ack/nack signal as shown in Figure 5, ack/nack signal parser modules 503 is embodiments of the present invention.The radiofrequency signal that 501 receiving system receiving end/sending ends send carries out going out ack/nack signal and other physical channels at physical channel demodulation multiplexer module 502 demultiplexings after radio frequency reception and analog-to-digital conversion etc. process; Then in ack/nack signal parser modules 503, judge the information of each ACK/NACK that transmitting terminal sends.
Embodiment
This part has provided two embodiment of this invention, and is too tediously long for fear of the description that makes this patent, in the following description, omitted the detailed description of function that the public is known or device etc.
The first embodiment
In the present embodiment, supposing the system sends ACK/NACK information based on the FDM multiplex mode, and supposes that each ACK/NACK takies 3 subcarriers, does not distinguish OFDM technology or the SCFDMA technology of employing here.
As shown in Figure 6, supposing the system need to transmit two ACK/NACK information, and system assignment doubles the resource that sends single ACK/NACK information, and namely 6 subcarriers of system assignment are used for carrying this two ACK/NACK information (601～606).As shown in Figure 6, according to method of the present invention, first ACK/NACK information is mapped to I branch road (607) transmission of these 6 subcarriers, and second ACK/NACK information is mapped to Q branch road (608) transmission of these 6 subcarriers.
As shown in Figure 7, supposing the system need to transmit four ACK/NACK information, and system assignment is four times in the resource that sends single ACK/NACK information, and namely 12 subcarriers of system assignment are used for carrying this four ACK/NACK information (701～712).As shown in Figure 7, according to method of the present invention, first ACK/NACK information is mapped to wherein 6 subcarriers (701,703,705,707,709,711) I branch road (713) transmission, second ACK/NACK information is mapped to wherein 6 subcarriers (702,704,706,708,710,712) I branch road transmission, the 3rd ACK/NACK information is mapped to wherein 6 subcarriers (701,703,705,707,709,711) Q branch road (713) transmits, and the 4th ACK/NACK information is mapped to wherein 6 subcarriers (702,704,706,708,710,712) Q branch road transmission.
As shown in Figure 8, supposing the system need to transmit three ACK/NACK information, and system assignment is three times in the resource that sends single ACK/NACK information, and namely 9 subcarriers of system assignment are used for carrying this three ACK/NACK information (801～809).As shown in Figure 8, according to method of the present invention, first ACK/NACK information is mapped to subcarrier (801,804,807) I branch road and subcarrier (802,805,808) Q branch road (810) transmission, second ACK/NACK information is mapped to subcarrier (802,805,808) I branch road and subcarrier (803,806,809) Q branch road (811) transmits, and the 3rd ACK/NACK information is mapped to subcarrier (803,806,809) I branch road and subcarrier (801,804,807) Q branch road (812) transmission.
As shown in Figure 9, supposing the system need to transmit two ACK/NACK information, and the system assignment resource identical with the resource that sends single ACK/NACK information, and namely 3 subcarriers of system assignment are used for carrying this two ACK/NACK information (901～903).As shown in Figure 9, according to method of the present invention, first ACK/NACK information is mapped to I branch road (904) transmission of these 3 subcarriers, and second ACK/NACK information is mapped to Q branch road (905) transmission of these 3 subcarriers.
Figure 11 is an example of transmitting terminal hardware block diagram.As shown in the figure, transmitting terminal is M (M is greater than 1) individual ACK/NACK input information ack/nack signal maker (1101), and the method that proposes according to the present invention generates ack/nack signal; Then arrive by the information multiplexing of physical channel multiplexer (1102) with other physical channels; Solution is got off the signal after multiplexing is carried out IFFT conversion (1103), adds Cyclic Prefix (1104), and steering D/A conversion (1105) is at last by radio frequency sending set (1106) and antenna (1107) emission.
Figure 12 is an example of receiving terminal hardware block diagram.Receiving terminal is by the signal of antenna (1201) and radio-frequency transmitter (1202) reception from transmitting terminal, through mould/transformation of variables (1203), remove Cyclic Prefix (1204), carry out FFT conversion (1205), next demultiplexing goes out ack/nack signal and other physical channels in physical channel demodulation multiplexer (1206); Then in ack/nack signal resolver (1207), judge the information of each ACK/NACK that transmitting terminal sends.
The second embodiment
In the present embodiment, supposing the system adopts the SCFDMA physical-layer techniques, and the signal form based on the CAZAC sequence sends ACK/NACK information on each SCFDMA symbol.
As shown in figure 10, supposing the system need to send two ACK/NACK information, two ACK/NACK information (1001,1002) be mapped to respectively the I branch road of modulation symbol and Q branch road and form modulation symbol (1003), then modulation symbol (1003) multiplies each other with CAZAC sequence (1004), after serial/parallel conversion (1005), carry out Pre-DFT and follow-up SCFDMA signal processing (1006).The length of CAZAC sequence (1004) is decided by to be used in the SCFDMA symbol number of the subcarrier of transferring ACK/nack message.Method shown in Figure 10 both had been applicable to the CDM multiplex mode, also was applicable to the FDM multiplex mode.
Claims (20)
1. the method for a transmitting HARQ ACK/NACK information comprises step:
A) first communication node sends the data that comprise a plurality of encoding blocks, and wherein, encoding block is defined as the block of information of the independent CRC of interpolation and coding;
B) second communication node receives the data-signal of described first communication node, and judges whether each encoding block correctly receives;
C) described second communication node sends respectively HARQ ACK or nack message for each encoding block, wherein, the ACK/NACK information of each transmission will take I branch road or the Q branch road of at least a portion modulation symbol in all physical resources that minute are used in transmitting HARQ ACK/NACK information;
D) described first communication node receives the HARQACK/NACK information that described second communication node sends, and correspondingly sends new data or data retransmission.
2. method according to claim 1, it is characterized in that at step c) in, system assignment MK modulation symbol resource is used for the ACK/NACK information of M encoding block of transmission, the resource that each ACK/NACK information takies 2K unit is transmitted, and wherein K is the modulation symbol number of the single ACK/NACK information of transmission.
3. method according to claim 2 is characterized in that, a branch road of a modulation symbol is the least unit that the ACK/NACK resource is distributed.
4. method according to claim 2 is characterized in that, the frequency diversity maximum effect of the modulation symbol at the resource place of 2K unit of configuration.
5. method according to claim 2 is characterized in that, then each ACK/NACK information repetition is mapped to the resource of 2K unit for 2K time.
6. method according to claim 2 is characterized in that, is mapped to the resource of 2K unit after the sequence that each ACK/NACK information and length are 2K multiplies each other.
7. method according to claim 2 is characterized in that, the resource of 2K the unit that each ACK/NACK information is mapped to can be the I branch road of modulation symbol, perhaps all is the Q branch road of modulation symbol.
8. method according to claim 2 is characterized in that, mixed I branch road and the Q branch road that uses modulation symbol of the resource of 2K the unit that each ACK/NACK information is mapped to.
9. method according to claim 2 is characterized in that, to each ACK/NACK information, what send according to current needs is ACK information or nack message, determines that correspondingly it is mapped to the I branch road of 2K modulation symbol or the power of Q branch road.
10. method according to claim 2 is characterized in that, no matter current what need to send is ACK information or nack message, the HARQ ACK/NACK information of this M encoding block is adopted identical power transmission.
11. method according to claim 1, it is characterized in that at step c) in, two ACK/NACK information are mapped to respectively I branch road and the Q branch road of modulation symbol, then the sequence S that is this modulation symbol and length L multiplies each other, and the sequence that then obtains multiplying each other maps directly on the subcarrier of physical layer.
12. method according to claim 1, it is characterized in that at step c) in, two ACK/NACK information are mapped to respectively I branch road and the Q branch road of modulation symbol, then the sequence S that is this modulation symbol and length L multiplies each other, and the sequence that then obtains multiplying each other is input to the Pre-DFT module and processes.
13. according to claim 11 or 12 described methods, it is characterized in that sequence S is the Walsh sequence.
14. according to claim 11 or 12 described methods, it is characterized in that sequence S is the sequence with CAZAC sequence character.
15. according to claim 11 or 12 described methods, it is characterized in that to each ACK/NACK information, what send according to current needs is ACK information or nack message, correspondingly determines the I branch road of its modulation symbol that is mapped to or the power of Q branch road.
16. according to claim 11 or 12 described methods, it is characterized in that, no matter current what need to send is ACK information or nack message, adopt identical power to send to the HARQ ACK/NACK information of these 2 encoding blocks.
17. method according to claim 12 is characterized in that, when only needing to send two ACK/NACK information, and when system configuration ACK/NACK sends at k SCFDMA symbol, repeat to send this two ACK/NACK information at this k SCFDMA symbol, wherein, k is greater than 1.
18. method according to claim 12, it is characterized in that, when needs send M ACK/NACK information, and when system configuration ACK/NACK sends at k SCFDMA symbol, send two ACK/NACK information at each SCFDMA symbol, and the ACK/NACK information of different SCFDMA sign reversings transmission, wherein, k greater than 1, M greater than 2.
19. a transmitting terminal is processed the equipment of HARQ ack/nack signal, comprises transmission/reception, also comprises:
A) ack/nack signal maker module is used for generating the ack/nack signal that will send;
B) physical channel multiplexer module is used for the base station ack/nack signal and other physical channels is multiplexed into together,
Wherein, transmitting terminal sends the data that comprise a plurality of encoding blocks, encoding block is defined as the block of information of the independent CRC of interpolation and coding, and receiving terminal sends respectively HARQ ACK or nack message for each encoding block, and the ACK/NACK information of each transmission will take I branch road or the Q branch road of at least a portion modulation symbol in all physical resources that minute are used in transmitting HARQ ACK/nack message.
20. a receiving terminal is processed the equipment of HARQ ack/nack signal, comprises transmission/reception, also comprises:
A) ack/nack signal parser modules is for the information of judging each ACK/NACK that transmitting terminal sends;
B) physical channel demodulation multiplexer module is used for demultiplexing and goes out ack/nack signal;
Wherein, receiving terminal receives the data that comprise a plurality of encoding blocks, encoding block is defined as the block of information of the independent CRC of interpolation and coding, receiving terminal sends respectively HARQ ACK or nack message for each encoding block, and the ACK/NACK information of each transmission will take I branch road or the Q branch road of at least a portion modulation symbol in all physical resources that minute are used in transmitting HARQ ACK/nack message.
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