WO2012171413A1

WO2012171413A1 - Harq-ack feedback processing method and system

Info

Publication number: WO2012171413A1
Application number: PCT/CN2012/074299
Authority: WO
Inventors: 戴博; 梁春丽; 张禹强
Original assignee: 中兴通讯股份有限公司
Priority date: 2011-06-16
Filing date: 2012-04-18
Publication date: 2012-12-20
Also published as: CN102223219A; CN102223219B

Abstract

Disclosed are a HARQ-ACK feedback processing method and system. The method comprises: when a UE is configured with multiple serving cells, one or six uplink and downlink sub-frames are configured, and a size of a bundling window is 1, a base station sending a DCI format 0 and/or 4 to the UE, two-bit downlink allocation indication (DAI) information in the DCI format 0 and/or 4 being used to indicate a downlink scheduling condition of a current sub-frame; and the UE determining, according to the DAI information, an HARQ-ACK bit sequence fed back on a PUSCH and/or determining the number of REs occupied by the HARQ-ACK bit sequence. The present invention achieves the effect that the size and occupied resource units of a HARQ-ACK bit sequence sent by a UE meet the actual requirements.

Description

The present invention relates to the field of communications, and in particular to a feedback processing method and system for hybrid automatic retransmission response message (HARQ Acknowledgement, abbreviated as HARQ-ACK). BACKGROUND In a Hybrid Automatic Repeat Request (HARQ) method, a codeword sent by a transmitting end can not only detect errors but also have a certain error correction capability. After receiving the codeword, the decoder at the receiving end first checks the error condition. If it is within the error correction capability of the codeword, it automatically performs error correction. If there are many errors, the error correction capability of the codeword is exceeded, but it can still be detected. If the error comes out, the receiving end sends a decision signal to the transmitting end through the feedback channel, and the transmitting end is required to resend the information. In an Orthogonal Frequency Division Multiplex (OFDM) system, a HARQ Acknowledgement (HARQ Acknowledgement, abbreviated as HARQ-ACK) is used to feed back a base station to determine whether retransmission is needed. When the HARQ-ACK response message to the base station is ACK, it indicates that the receiving end correctly received the information; when the HARQ-ACK response message fed back to the base station is NACK, it indicates that the receiving end receives the error, and the base station needs to perform retransmission. In a Long Term Evolution (LTE) system, the standard protocol is Rel-8/9, the HARQ-ACK response message can be on the Physical Uplink Control Channel (PUCCH). It can be sent separately or together with data on the Physical Uplink Shared Channel (PUSCH). In a Time Division Duplex (TDD) system, the uplink and downlink subframes are not one-to-one correspondence, that is, the ACK/NACK response messages corresponding to multiple downlink subframes need to be in one uplink subframe. The PUCCH/PUSCH channel is sent, where the downlink subframe set corresponding to the uplink subframe constitutes a binding window. In LTE TDD, two HARQ-ACK feedback modes are defined: One is HARQ-ACK bundling. As shown in Figure 1, the basic idea of the feedback mode is that it needs to be in the uplink subframe. The HARQ-ACK message of the codeword stream corresponding to each downlink sub-frame is logically ANDed. If the PDSCH transmission of one downlink sub-frame contains two codeword streams, the user equipment (User Equipment, UE for short) needs feedback. The sub-frame logic and the operation of the 2-bit HARQ-ACK response message corresponding to each codeword stream. If the PDSCH transmission of each sub-frame has only one codeword stream, the UE has to feedback the sub-frame logic and operation. a 1-bit HARQ-ACK response message corresponding to the codeword stream, when the UE When there is no PUSCH to transmit in the current subframe, the UE will transmit the 1/2-bit HARQ-ACK response message on the PUCCH in the format la/lb; and when the UE has PUSCH transmission in the current subframe, the UE will The 1/2 bit information is multiplexed with certain channel coding, channel interleaving, and data, and then transmitted on the PUSCH. The other is a HARQ-ACK multiplexing feedback mode. As shown in FIG. 2, the feedback mode needs to feed back one HARQ-ACK response message for each downlink subframe, and multiple subframes need to feed back multiple A HARQ-ACK response message, and when a PDSCH transmission of a downlink subframe includes two codeword streams, logically AND operation is performed on the HARQ-ACK response message of each codeword stream, and finally each downlink subframe corresponds to only one HARQ-ACK response message. When the UE does not transmit a PUSCH in the current subframe, the UE will transmit the multiple HARQ-ACK response messages on the PUCCH by using format lb with channel selection. The core idea of the method is to utilize Different PUCCH channels and different modulation symbols on the channel represent different HARQ ACK response messages. The method enables a portable HARQ-ACK response message to be up to 4 bits by channel selection in combination with the control channel format lb. When LTE defines different subframe configurations, that is, when the uplink and downlink subframe configurations are 1:2/3/4, the state combination of the ACK/NACK response message and the selected PUCCH channel and the 2-bit information carried on the channel b (0) Mapping table between b(l) (referred to as mapping table). When the UE has a PUSCH to transmit in the current subframe, the UE further performs transmission of the HARQ-ACK response message according to whether the current PUSCH has corresponding PDCCH scheduling information: when the PUSCH has a corresponding PDCCH, the UE according to the downlink corresponding to the PDCCH The downlink allocation indication (Downlink Assignment Indicator, DAI for short, and the DAI in the DCI related to the PUSCH is called uplink DAI) information to determine that the HARQ-ACK response message is sent on the PUSCH. The size of the bit sequence, and the DAI in the DCI corresponding to the PDSCH (here, the DAI is referred to as the downlink DAI) to determine the position of the HARQ-ACK response message corresponding to the corresponding downlink subframe in the feedback bit sequence; when the PUSCH does not The corresponding PDCCH, the UE determines the size of the bit sequence when the HARQ-ACK response message is sent on the PUSCH according to the current uplink and downlink subframe configuration, and determines the corresponding downlink according to the order relationship corresponding to the uplink subframe and the downlink subframe. The position of the HARQ-ACK response message corresponding to the frame among the feedback bit sequences; then these HARQ-ACK bit sequences requiring feedback The column is channel coded, the channel interleaving is multiplexed with the data, and finally transmitted on the PUSCH. The uplink DAI represents the total number of PDSCHs sent in the binding window and the PDCCHs used to indicate semi-persistent Scheduling (SPS) release, and the downlink DAI indicates the accumulation to the current subframe. The total number of PDCCHs detected by the UE. Both the uplink DAI and the downlink DAI are represented by 2 bits, and the corresponding meanings of the corresponding bits and representations are as shown in Table 1. Table 1 Values of the downlink allocation index

DAI PDSCH transmission and PDCCH indicating downlink SPS resource release

y DAI - ^ ^y DAI

High leading number

( Most , where the former is Significant downlink control signaling

Bit, referred to as the formula 0/4

MSB), low DAI, SP, uplink

Bit leading DAI; the latter is down

(Least Control Signaling Format 2

The DAI referred to by Significant,

Bit, referred to as, ie, DAI

LSB)

0,0 1 1 or 5 or 9

0, 1 2 2 or 6

1,0 3 3 or 7

1, 1 4 0 or 4 or 8

Whether the UE of TDD adopts HARQ-ACK bundling or HARQ-ACK mulitplexing to feed back HARQ-ACK is configured by higher layer signaling. In order to meet the requirements of the International Telecommunication Union-Advanced (ITU-Advanced), the Long Term Evolution Advanced (LTE-A, the corresponding standard protocol is Rel, which is the evolution standard of LTE). -10) The system needs to support larger system bandwidth (up to 100MHz) and requires backward compatibility with existing LTE standards. Based on the existing LTE system, the bandwidth of the LTE system can be combined to obtain a larger bandwidth. This technology is called Carrier Aggregation (CA) technology, which can improve advanced international mobile communication. (International Mobile Telecommunication, referred to as IMT-Advance) The spectrum utilization of the system and the mitigation of spectrum resources are scarce, thereby optimizing the utilization of spectrum resources. In a system in which carrier aggregation is introduced, a carrier that performs aggregation is called a component carrier (CC), and is also called a serving cell. At the same time, the concept of the primary component carrier/cell (PCC/PCell) and the secondary component carrier/cell (SCC/SCell) is also proposed. The system includes at least one primary serving cell and a secondary serving cell, wherein the primary serving cell is always in an active state. When the LTE-A adopts the carrier aggregation technology, if the base station configures multiple downlink serving cells for the UE, the UE needs to feed back the HARQ-ACK response messages of the corresponding codeword streams of the multiple downlink serving cells. In LTE-A, when the HARQ-ACK response message is sent on the physical uplink control channel, two feedback modes are defined: using PUCCH format lb with channel selection and extending orthogonal according to discrete Fourier transform. Frequency division multiplexing (DFT-s-OFDM) feedback. Since the channel structure of the feedback mode based on DFT-s-OFDM is different from PUCCH format l/la/lb/2/2a/2b, in the existing LTE-A protocol, this structure is called PUCCH format 3 ( PUCCH format 3). When the HARQ-ACK response message is in physics When transmitting on the uplink shared channel, the UE needs to determine the HARQ-ACK bit sequence transmitted on the PUSCH according to the configured number of aggregated serving cells, the configured transmission mode of the serving cell, and the configured uplink-downlink subframe ratio (for the TDD system). . For the LTE-ATDD uplink and downlink subframe configuration is 1~6, when the UE is configured with multiple serving cells, 2bit signaling is designed as the downlink allocation index in the downlink control information DCI formats 0 and 4, and is used for the UE on the PUSCH. When the HARQ-ACK is transmitted, the size of the HARQ-ACK bit sequence is determined. / value is shown in Table 2. Table 2. ff values

The main purpose of determining the size of the feedback HARQ-ACK bit sequence is to allow the UE to perform HARQ-ACK feedback as much as possible according to the actual scheduling situation of the base station (rather than configuration) to reduce the number of feedback bits of the HARQ-ACK. (When the actual scheduling is smaller than the configuration), thereby reducing the number of resource elements (Resource Element, referred to as RE) occupied by the HARQ-ACK when transmitting on the PUSCH, thereby reducing the transmission of the HARQ-ACK on the PUSCH. The impact of PUSCH performance. In the current LTE-A system, when only a single codeword stream is transmitted, the number of REs occupied by the HARQ-ACK on the PUSCH can be calculated by the following formula:

Where O is the number of HARQ-ACK bits, _s ^P . ^useH is the number of PUSCH bandwidth subcarriers scheduled by the subframe in which the transport block is located, and N ^H — ^imtial is the number of subframe symbols of the initial transmission PUSCH on the corresponding transmission subframe, and

Μ , (: and obtained by the scheduling PDCCH corresponding to the same transport block, β ^Η is the power control parameter. When the double codeword is transmitted, the number of REs occupied by the HARQ-ACK on the PUSCH can be calculated by the following formula:

The superscripts (1) and (2) in the above formula represent the first and second transport blocks, respectively. However, for the case where the binding window size is 1, the value of the HARQ-ACK bit sequence sent by the UE is larger than that actually required by the base station. For example, if the UE is configured with two serving cells and the two serving cells are configured as the downlink transmission mode of the dual codeword stream, the UE will need to feed back the HARQ-ACK on the PUSCH according to the related art. A 4-bit HARQ-ACK is transmitted, but in fact, at some time, e B may only schedule a certain serving cell. At this time, the eNB only needs 2-bit HARQ-ACK feedback, but the UE still follows 4-bit HARQ-ACK. The feedback is performed, that is, the HARQ-ACK fed back by the UE has redundant information. Therefore, in order to more accurately determine the size of the HARQ-ACK bit sequence to reduce the impact on the PUSCH when the HARQ-ACK is transmitted on the PUSCH, for the configuration with the binding window of 1, the improved design and the HARQ-ACK bit sequence The method of determining the size is necessary. SUMMARY OF THE INVENTION The present invention provides a feedback processing scheme for a HARQ-ACK, to at least solve the case where the binding window size is 1 in the related art, and the size of the HARQ-ACK bit sequence transmitted by the UE is larger than that actually required by the base station. problem. According to an aspect of the present invention, a feedback processing method for a HARQ-ACK is provided, including: when a UE is configured with multiple serving cells, the uplink and downlink subframes are configured to be 1 or 6, and the binding window size is 1, the base station Transmitting the DCI format 0 and/or 4 to the UE, where the two-bit downlink allocation indication DCI information in the DCI format 0 and/or 4 is used to indicate the downlink scheduling situation of the current subframe; the UE determines the feedback on the PUSCH according to the DAI information. The HARQ-ACK bit sequence and/or the number of REs occupied by the HARQ-ACK bit sequence. Preferably, when the configured HARQ-ACK feedback mode is channel selection and the configured transmission modes of the two downlink serving cells are all dual codeword streaming modes, the UE determines the HARQ-ACK bit sequence fed back on the PUSCH according to the DAI information. And/or determining the number of REs occupied by the HARQ-ACK bit sequence includes: when the DAI information is A, the UE determines that the size of the HARQ-ACK bit sequence is 4, and determines that the bit sequence is ^ and O ^, where, and the HARQ-ACK response message corresponding to the primary serving cell, O ^ and O ^ correspond to the HARQ-ACK response message of the secondary serving cell; and the P/or UE calculates the RE number using 0 = 4; The two downlink serving cells include a primary serving cell and a secondary serving cell. When the DAI information is B, the UE determines that the size of the HARQ-ACK bit sequence is 2, and determines that the bit sequence is 0^, where, and 0^ correspond to the primary The HARQ-ACK response message of the serving cell; and/or the UE calculates the RE number using 0 = 2; when the DAI information is C, the UE determines that the size of the HARQ-ACK bit sequence is 2, and determines that the bit sequence is Of^ and 0^ And the HARQ-ACK response message corresponding to the secondary serving cell; the P/or the UE calculates the RE number by using 0=2; when the DAI information is D, the UE does not send the HARQ-ACK response message on the PUSCH, and the UE determines the HARQ- The size and/or RE number of the ACK bit sequence is zero. Preferably, when the configured HARQ-ACK feedback mode is channel selection and the configured transmission modes of the two downlink serving cells are all single codeword stream transmission modes, the UE determines the HARQ-ACK bit sequence fed back on the PUSCH according to the DAI information. And determining the number of REs occupied by the HARQ-ACK bit sequence includes: when the DAI information is A, the UE determines that the size of the HARQ-ACK bit sequence is 2, and determines that the bit sequence is a sum, where the HARQ corresponding to the primary serving cell - ACK response message, 0^ corresponds to the HARQ-ACK response message of the secondary serving cell; and/or the UE calculates the RE number using 0 = 2; wherein, the two downlink serving cells include the primary serving cell and the secondary serving cell; B, the UE determines that the size of the HARQ-ACK bit sequence is 1, and determines that the bit sequence is 0, where 0 corresponds to the HARQ-ACK response message of the primary serving cell; and/or the UE calculates the RE number using 0 = 1; When the DAI information is C, the UE determines that the size of the HARQ-ACK bit sequence is 1, and determines that the bit sequence is ί3⁄4^, where the HARQ-ACK response message corresponding to the secondary serving cell; and/or the UE calculates the RE number by using 0=1. When the DAI information is D, The UE does not transmit a HARQ-ACK response message on the PUSCH, and the UE determines that the size and/or the number of REs of the HARQ-ACK bit sequence is zero. Preferably, when the configured HARQ-ACK feedback mode is channel selection and the transmission mode of the primary serving cell in the configured 2 downlink serving cells is a dual codeword streaming mode, the transmission of the secondary serving cell in the 2 downlink serving cells When the mode is the single codeword stream transmission mode, the UE determines the HARQ-ACK bit sequence fed back on the PUSCH according to the DAI information and/or determines the number of REs occupied by the HARQ-ACK bit sequence, including: when the DAI information is A, the UE determines The size of the HARQ-ACK bit sequence is 3, and the determined bit sequence is HARQ-ACK response message corresponding to the primary serving cell corresponding to ":, where 0^ corresponds to 0^, and 0f ^K corresponds to the HARQ-ACK response message of the secondary serving cell; and / Or the UE calculates the RE number by using 0=3; when the DAI information is B, the UE determines that the size of the HARQ-ACK bit sequence is 2, and determines that the bit sequence is Of^ and 0^, where 0f and the HARQ of the corresponding primary serving cell - ACK response message; and the P/or UE calculates the RE number using 0 = 2; when the DAI information is C, the UE determines that the size of the HARQ-ACK bit sequence is 1, and determines that the bit sequence is 0 ^CK , where 0 ^CK corresponds to HARQ-ACK response of the secondary serving cell ; And / or 0 = UE 1 using The number of REs is calculated. When the DAI information is D, the UE does not send a HARQ-ACK response message on the PUSCH, and the UE determines that the size of the HARQ-ACK bit sequence and/or the number of REs is zero. Preferably, when the configured HARQ-ACK feedback mode is channel selection and the transmission mode of the primary serving cell in the configured 2 downlink serving cells is a single codeword stream transmission mode, the transmission of the secondary serving cell in the 2 downlink serving cells When the mode is a dual codeword stream transmission mode, the UE determines the HARQ-ACK bit sequence fed back on the PUSCH according to the DAI information and/or determines the number of REs occupied by the HARQ-ACK bit sequence, including: when the DAI information is A, the UE determines The size of the HARQ-ACK bit sequence is 3, and the bit sequence is determined to be ":, where ₀ corresponds to the HARQ-ACK response message of the primary serving cell, and ₀ corresponds to the HARQ-ACK response message of the secondary serving cell; and/or the UE The number of REs is calculated using 0 = 3; when the DAI information is B, the UE determines that the size of the HARQ-ACK bit sequence is 1, and determines that the bit sequence is , where. t ^CK corresponds to the HARQ-ACK response message of the primary serving cell; and the P/or UE calculates the RE number by using 0=1; when the DAI information is C, the UE determines that the size of the HARQ-ACK bit sequence is 2, and the determined bit sequence is And, wherein, and the HARQ-ACK response message of the corresponding secondary serving cell; the P/or the UE calculates the RE number by using 0=2; when the DAI information is D, the UE does not send the HARQ-ACK response message on the PUSCH, and the UE determines the HARQ The size of the -ACK bit sequence and/or the number of REs is zero. Preferably, when the configured HARQ-ACK feedback mode is PUCCH format 3, determining, by the UE according to the DAI information, the HARQ-ACK bit sequence fed back on the PUSCH and/or determining the number of REs occupied by the HARQ-ACK bit sequence includes: determining by the UE The HARQ-ACK bit sequence is a bit sequence of the HARQ-ACK response message corresponding to the corresponding codeword stream of the configured downlink serving cell according to the downlink serving cell index, and/or the UE determines 0 according to the downlink allocation index, and uses 0 calculates the number of REs. Preferably, the UE determines 0 according to the downlink allocation index, including: 0 = 2 where ff is a value determined according to the DAI information. Preferably, when the DAI information is A, ff takes a value of 1 or 5; when the DAI information is B, ff takes a value of 2; when the DAI information is C, ff takes a value of 3; when the DAI information is D, , ff takes a value of 4 or 0. Preferably, when the DAI information is A, if the total number of codeword streams received by the UE in the current subframe and the total number of semi-persistent scheduling release DCI formats SPS Release DCI Format exceeds 2, the UE determines W=5, no ij, The UE determines "^ = 1." Preferably, when the DAI information is D, if the UE does not receive the physical downlink shared channel and the SPS Release DCI Format in the current subframe, the ij UE determines =0, and if not, the UE determines ^=4. Preferably, A, B, C, and D are one of 2-bit binary numbers, and A, B, C, and PD are not equal to each other. Preferably, when the base station transmits one or more DCI formats 0 and/or 4 to the UE on the subframe, the values of the DAI information in the one or more DCI formats are the same. Preferably, when the UE receives one or more DCI formats 0 and/or 4 on the subframe, the UE assumes that the values of the DAI information in one or more DCI formats are the same. According to another aspect of the present invention, a feedback processing system for a HARQ-ACK is provided, including: a base station, configured to: when a user equipment UE is configured with multiple serving cells, the uplink and downlink subframes are configured to be 1 or 6, and the binding is performed. When the window size is 1, the DCI format 0 and/or 4 are sent to the UE, where the two-bit downlink allocation indication DCI information in the DCI format 0 and/or 4 is used to indicate the downlink scheduling condition of the current subframe; It is set to determine a HARQ-ACK bit sequence fed back on the PUSCH according to the DAI information and/or determine the number of REs occupied by the HARQ-ACK bit sequence. With the present invention, the base station is used to notify the UE of the downlink scheduling situation, and the UE further determines the HARQ-ACK bit sequence fed back on the PUSCH and/or the RE number used by the HARQ-ACK bit sequence determined according to the scheduling situation. In the case that the binding window size is 1, the size of the HARQ-ACK bit sequence sent by the UE is larger than that of the base station actually needs to be fed back, and the size and the occupied resource unit of the HARQ-ACK bit sequence transmitted by the UE are achieved. Meet the actual needs of the effect. BRIEF DESCRIPTION OF THE DRAWINGS The accompanying drawings, which are set to illustrate,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,,, In the drawings: FIG. 1 is a schematic diagram of a HARQ-ACK bundling mode according to the related art; FIG. 2 is a schematic diagram of a HARQ-ACK multiplexing mode according to the related art; FIG. 3 is a feedback of HARQ-ACK according to an embodiment of the present invention. FIG. 4 is a schematic diagram of a UE feeding back HARQ-ACK according to Embodiment 2 of the present invention; FIG. 5 is a schematic diagram of another UE feeding back HARQ-ACK according to Embodiment 2 of the present invention; A schematic diagram of still another UE feeding back HARQ-ACK according to Embodiment 2 of the present invention; FIG. 7 is a schematic diagram of another UE feeding back HARQ-ACK according to Embodiment 2 of the present invention; FIG. 8 is a schematic diagram of UE feedback HARQ-ACK according to Embodiment 3 of the present invention; FIG. 9 is a third embodiment of the present invention. FIG. 10 is a schematic diagram of still another UE feedback HARQ-ACK according to Embodiment 3 of the present invention; FIG. 11 is another UE feedback HARQ- according to Embodiment 3 of the present invention. FIG. 12 is a schematic diagram of a UE feeding back HARQ-ACK according to Embodiment 4 of the present invention; FIG. 13 is a schematic diagram of another UE feeding back HARQ-ACK according to Embodiment 4 of the present invention; FIG. 15 is a schematic diagram of still another UE feeding back HARQ-ACK according to Embodiment 4 of the present invention; FIG. 16 is a schematic diagram of a UE according to Embodiment 5 of the present invention; FIG. 17 is a schematic diagram of another UE feedback HARQ-ACK according to Embodiment 5 of the present invention; FIG. 18 is a schematic diagram of still another UE feedback HARQ-ACK according to Embodiment 5 of the present invention; 19 is another UE feedback HARQ-ACK according to Embodiment 5 of the present invention. FIG. 20 is a schematic diagram of UE feedback HARQ-ACK according to Embodiment 6 of the present invention; FIG. 21 is a schematic diagram of UE feedback HARQ-ACK according to Embodiment 7 of the present invention; FIG. 22 is a schematic diagram of a UE according to an embodiment of the present invention; A schematic diagram of a UE feedback HARQ-ACK of eight; FIG. 23 is a flowchart of a feedback processing system of HARQ-ACK according to an embodiment of the present invention. BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the features in the embodiments may be combined with each other without conflict. Embodiment 1 The embodiment of the present invention discloses a feedback processing method for HARQ-ACK, which can be used in an LTE-A TDD system, and FIG. 3 is a flowchart of a feedback processing method for HARQ-ACK according to an embodiment of the present invention, such as As shown in FIG. 3, the method includes: Step S302: When a UE is configured with multiple serving cells, the uplink and downlink subframes are configured to be 1 or 6, and the binding window size is 1, the base station sends a DCI format 0 and/or to the UE. 4, wherein the two-bit DAI information in the DCI format 0 and/or 4 is used to indicate a downlink scheduling situation of the current subframe; and in step S304, the UE determines a HARQ-ACK bit sequence and/or determines the feedback on the PUSCH according to the DAI information. The number of REs occupied by the HARQ-ACK bit sequence. In this embodiment, the base station informs the UE of the downlink scheduling situation, and the UE further determines the HARQ-ACK bit sequence fed back on the PUSCH according to the scheduling situation and/or determines the number of REs occupied by the HARQ-ACK bit sequence, thereby enabling the UE to The size of the transmitted HARQ-ACK bit sequence and the occupied resource unit meet the actual needs and do not exceed the feedback actually needed by the base station. Step S304 may be implemented in multiple manners, for example, the following manners may be used: Mode 1 When the configured HARQ-ACK feedback mode is channel selection and the configured transmission modes of the two downlink serving cells are dual codeword streams. In the transmission mode, step S304 may include: when the DAI information is A, the UE determines that the size of the HARQ-ACK bit sequence is 4, and determines that the bit sequence is 0 ^CK , O ^K , O ^K , and 0 , where Of and 0 ^ corresponding to the HARQ-ACK response message of the primary serving cell, O ^ and O ^ corresponding to the HARQ-ACK response message of the secondary serving cell; and the P/or UE calculating the RE number using 0 = 4; wherein the above two downlink serving cells include The primary serving cell and the secondary serving cell; when the DAI information is B, the UE determines that the size of the HARQ-ACK bit sequence is 2, and determines that the bit sequence is 0f and, where, 0f and the HARQ-ACK response message corresponding to the primary serving cell; And/or the UE calculates the RE number by using 0=2; when the DAI information is C, the UE determines that the size of the HARQ-ACK bit sequence is 2, and determines that the bit sequence is 0f and 0^, where 0 and 0 correspond to the secondary serving cell. HARQ-ACK response message; and/or UE The number of REs is calculated using 0 = 2; when the DAI information is D, the UE does not send a HARQ-ACK response message on the PUSCH, and the UE determines the size and/or the number of REs of the HARQ-ACK bit sequence to be 0. In the second mode, when the configured HARQ-ACK feedback mode is the channel selection and the configured transmission modes of the two downlink serving cells are all in the single codeword stream transmission mode, step S304 may include: when the DAI information is A, the UE determines the HARQ- The size of the ACK bit sequence is 2, and the determined bit sequence is Of and, where Of corresponds to the HARQ-ACK response message of the primary serving cell, corresponding to the HARQ-ACK response message of the secondary serving cell; and/or the UE calculates using 0 = 2 The number of REs; wherein, the two downlink serving cells include a primary serving cell and a secondary serving cell; when the DAI information is B, the UE determines that the size of the HARQ-ACK bit sequence is 1, and determines that the bit sequence is 0 ^CK , where the corresponding primary The HARQ-ACK response message of the serving cell; and/or the UE calculates the RE number using 0 = 1; when the DAI information is C, the UE determines that the size of the HARQ-ACK bit sequence is 1, and determines that the bit sequence is . ^CK , wherein: Of corresponds to the HARQ-ACK response message of the secondary serving cell; and/or the UE calculates the RE number by using 0=1; when the DAI information is D, the UE does not send the HARQ-ACK response message on the PUSCH, and the UE determines the HARQ. The size of the -ACK bit sequence and/or the number of REs is zero. Mode 3: When the configured HARQ-ACK feedback mode is channel selection, and the configured transmission mode of the primary serving cell in the two downlink serving cells is a dual codeword stream transmission mode, and the transmission mode of the secondary serving cell in the two downlink serving cells Step S304 may include: when the DAI information is A, the UE determines that the size of the HARQ-ACK bit sequence is 3, and determines that the bit sequence is ^ and Of, where Of and the corresponding primary serving cell The HARQ-ACK response message, O ^K corresponds to the HARQ-ACK response message of the secondary serving cell; and/or the UE calculates the RE number using 0 = 3; when the DAI information is B, the UE determines that the size of the HARQ-ACK bit sequence is 2 And determining that the bit sequence is Of and, wherein, and the HARQ-ACK response message corresponding to the primary serving cell; and/or the UE calculates the RE number using 0 = 2; when the DAI information is C, the UE determines the HARQ-ACK bit sequence The size is 1, and the bit sequence is determined to be. ^CK , where: Of corresponds to the HARQ-ACK response message of the secondary serving cell; and/or the UE calculates the RE number by using 0=1; When the DAI information is D, the UE does not send a HARQ-ACK response message on the PUSCH, and the UE determines that the size and/or the number of HARQ-ACK bit sequences are zero. Mode 4: When the configured HARQ-ACK feedback mode is channel selection, and the configured transmission mode of the primary serving cell in the two downlink serving cells is a single codeword stream transmission mode, and the transmission mode of the secondary serving cell in the two downlink serving cells Step S304 may include: when the DAI information is A, the UE determines that the size of the HARQ-ACK bit sequence is 3, and determines that the bit sequence is ^ and Of, where Of corresponds to the primary serving cell a HARQ-ACK response message, and a corresponding HARQ-ACK response message of the secondary serving cell; and/or the UE calculates the RE number by using 0=3; when the DAI information is B, the UE determines that the size of the HARQ-ACK bit sequence is 1, And determining that the bit sequence is 0 ^CK , where the HARQ-ACK response message corresponding to the primary serving cell; and/or the UE calculating the RE number by using 0=1; when the DAI information is C, the UE determines that the size of the HARQ-ACK bit sequence is 2, and determining that the bit sequence is Of and, wherein, and the HARQ-ACK response message of the corresponding secondary serving cell; and/or the UE calculates the RE number by using 0 = 2; when the DAI information is D, the UE does not send the HARQ on the PUSCH -ACK response message, the UE determines The size and/or RE number of the HARQ-ACK bit sequence is zero. In the fifth mode, when the configured HARQ-ACK feedback mode is the PUCCH format 3, the step S304 may include: the UE determines that the HARQ-ACK bit sequence is the HARQ-ACK response message corresponding to the corresponding codeword stream of the configured downlink serving cell, according to the downlink serving cell. The index is indexed from low to high level; and/or the UE is determined according to the downlink allocation index and uses the calculated RE number. In the above manner, an appropriate HARQ-ACK bit sequence can be determined according to actual conditions. In the fifth manner, the determining, by the UE, the 0 according to the downlink allocation index may include: 0 = 2 where is a value determined according to the DAI information. Preferably, when the DAI information is A, ff takes a value of 1 or 5; when the DAI information is B, ff takes a value of 2; when the DAI information is C, ff takes a value of 3; when the DAI information is D , ff takes a value of 4 or 0. With this embodiment, the value obtained by the DAI information can be conveniently obtained. In a preferred mode of the embodiment of the present invention, when the DAI information is A, if the total number of codeword streams received by the UE in the current subframe and the total number of semi-persistent scheduling release DCI formats SPS Release DCI Format exceeds 2, the UE determines 33⁄4^=5, otherwise, the UE determines f3⁄4^ = l. In still another preferred mode of the embodiment of the present invention, when the DAI information is D, if the UE does not receive the physical downlink shared channel and the SPS Release DCI Format in the current subframe, the UE determines ί3⁄4^=0, otherwise, the UE determines Ff^ = 4. Wherein, A, B, C, and D are one of binary numbers of 2 bits, and B, C, and D are not equal to each other. Preferably, when the base station transmits one or more DCI formats 0 and/or 4 to the UE on the subframe, the values of the DAI information in the one or more DCI formats are the same. Preferably, when the UE receives one or more DCI formats 0 and/or 4 on the subframe, the UE assumes that the values of the DAI information in the one or more DCI formats are the same. The implementation process of the embodiment of the present invention will be described in detail below with reference to the accompanying drawings. Embodiment 2 to Embodiment 5 relate to a method for transmitting a correct error response message in a time division duplex system using carrier aggregation technology. The embodiment of the present invention is directed to a scenario in which an uplink and downlink subframe is configured to be 1 or 6 in an LTE-TDD system, and when a binding window size is 1, the UE feeds back a HARQ-ACK response message on the PUSCH. When the HARQ-ACK feedback mode of the UE is configured as the channel selection, the two-bit downlink allocation indication (DAI) information in the downlink control information DCI format 0 and/or 4 sent by the base station to the UE indicates the downlink scheduling of the current subframe, Or, indicating the corresponding HARQ-ACK feedback of the UE, as shown in the following table: Table 3

DAI

Downstream scheduling

MSB, LSB

A simultaneously schedules Pcell and Scell

B only dispatched Pcell

C only dispatched Scell

D has no scheduling Or,

Table 4

Among them, A, B, C and D can be any of '00', '0Γ, 'ΙΟ' Ί ,, and A, B, C and D are different from each other. Embodiment 2 This embodiment is applicable to a case where the downlink transmission modes of the primary serving cell and the secondary serving cell are both dual codeword streaming modes, and in this case, the HARQ-ACK bit sequence and/or feedback on the PUSCH are determined in the following manner. The number of REs occupied by the HARQ-ACK bit sequence. As shown in FIG. 4, when the two-bit downlink allocation indication information is A, the UE determines that the size of the HARQ-ACK bit sequence fed back on the PUSCH is 4, and the bit sequence is 0 ^CK , O ^K , O ^K , and 0. Where: Of and 0^ correspond to the HARQ-ACK response message of the primary serving cell, and O^ and If correspond to the HARQ-ACK response message of the secondary serving cell; the number of REs occupied by the UE in calculating the HARQ-ACK bit sequence fed back on the PUSCH Use 0 = 4. As shown in FIG. 5, when the two-bit downlink allocation indication information is B, the UE determines that the size of the HARQ-ACK bit sequence fed back on the PUSCH is 2, and the bit sequence is Of and O^, where Of and 0^ Corresponding to the HARQ-ACK response message of the primary serving cell; the UE uses 0=2 when calculating the number of REs occupied by the HARQ-ACK bit sequence fed back on the PUSCH. As shown in FIG. 6, when the two-bit downlink allocation indication information is C, the UE determines that the size of the HARQ-ACK bit sequence fed back on the PUSCH is 2, and the bit sequence is Of and 0^, where Of and 0^ Corresponding to the HARQ-ACK response message of the secondary serving cell; the UE uses 0=2 when calculating the number of REs occupied by the HARQ-ACK bit sequence fed back on the PUSCH. As shown in FIG. 7, when the two-bit downlink allocation indication information is D, the UE does not need to send a HARQ-ACK response message on the PUSCH. Embodiment 3 This embodiment is applicable to the case where the downlink transmission modes of the primary serving cell and the secondary serving cell are both single codeword stream transmission modes. In this case, the HARQ-ACK bit sequence and/or the HARQ-feedback on the PUSCH are determined in the following manner. The number of REs occupied by the ACK bit sequence. As shown in FIG. 8, when the two-bit downlink allocation indication information is A, the UE determines that the size of the HARQ-ACK bit sequence fed back on the PUSCH is 2, and the bit sequence is 0 and 0, where corresponding to the primary serving cell The HARQ-ACK response message, 0 corresponds to the HARQ-ACK response message of the secondary serving cell; the UE uses 0=2 when calculating the number of REs occupied by the HARQ-ACK bit sequence fed back on the PUSCH. As shown in FIG. 9, when the two-bit downlink allocation indication information is B, the UE determines that the size of the HARQ-ACK bit sequence fed back on the PUSCH is 1, and the bit sequence is 0. ^, where the HARQ-ACK response message corresponding to the primary serving cell is used; the UE uses 0 = 1 when calculating the number of REs occupied by the HARQ-ACK bit sequence fed back on the PUSCH. As shown in FIG. 10, when the two-bit downlink allocation indication information is C, the UE determines that the size of the HARQ-ACK bit sequence fed back on the PUSCH is 1, and the bit sequence is ί3⁄4^, where the HARQ of the secondary serving cell is corresponding. - ACK response message; The UE uses 0 = 1 when calculating the number of REs occupied by the HARQ-ACK bit sequence fed back on the PUSCH. As shown in FIG. 11, when the two-bit downlink allocation indication information is D, the UE does not need to send a HARQ-ACK response message on the PUSCH. Embodiment 4 This embodiment is applicable to a case where a downlink transmission mode of a primary serving cell is configured as a transmission mode of a dual codeword stream, and a downlink transmission mode of a secondary serving cell is configured as a transmission mode of a single codeword stream, where the method is determined as follows. The HARQ-ACK bit sequence fed back on the PUSCH and/or the number of REs occupied by the HARQ-ACK bit sequence. As shown in FIG. 12, when the two-bit downlink allocation indication information is A, the UE determines that the size of the HARQ-ACK bit sequence fed back on the PUSCH is 3, and the bit sequence is ^^, and O^, where Of and 0 ^ Corresponding to the HARQ-ACK response message of the primary serving cell, O ^K corresponds to the HARQ-ACK response message of the secondary serving cell; the UE uses 0 = 3 when calculating the number of REs occupied by the HARQ-ACK bit sequence fed back on the PUSCH. As shown in FIG. 13, when the two-bit downlink allocation indication information is B, the UE determines that the size of the HARQ-ACK bit sequence fed back on the PUSCH is 2, and the bit sequence is 0^, where, and 0^ correspond to the main The HARQ-ACK response message of the serving cell; the UE uses 0 = 2 when calculating the number of REs occupied by the HARQ-ACK bit sequence fed back on the PUSCH. As shown in FIG. 14, when the two-bit downlink allocation indication information is C, the UE determines that the size of the HARQ-ACK bit sequence fed back on the PUSCH is 1, and the bit sequence is ί3⁄4^, where the HARQ of the secondary serving cell is corresponding. - ACK response message; The UE uses 0 = 1 when calculating the number of REs occupied by the HARQ-ACK bit sequence fed back on the PUSCH. As shown in FIG. 15, when the two-bit downlink allocation indication information is D, the UE does not need to send a HARQ-ACK response message on the PUSCH. Embodiment 5 This embodiment is applicable to a case where a downlink transmission mode of a primary serving cell is configured as a transmission mode of a single codeword stream, and a downlink transmission mode of a secondary serving cell is configured as a transmission mode of a dual codeword stream, where the method is determined as follows. The HARQ-ACK bit sequence fed back on the PUSCH and/or the number of REs occupied by the HARQ-ACK bit sequence. As shown in FIG. 16, when the two-bit downlink allocation indication information is A, the UE determines that the size of the HARQ-ACK bit sequence fed back on the PUSCH is 3, and the bit sequence is ^^, and O^, where. ^CK corresponds to the HARQ-ACK response message of the primary serving cell, and cnnof^ corresponds to the HARQ-ACK response message of the secondary serving cell; the UE uses 0=3 when calculating the number of REs occupied by the HARQ-ACK bit sequence fed back on the PUSCH. As shown in FIG. 17, when the two-bit downlink allocation indication information is B, the UE determines that the size of the HARQ-ACK bit sequence fed back on the PUSCH is 1, and the bit sequence is ί3⁄4^, where the HARQ corresponding to the primary serving cell - ACK response message; The UE uses 0 = 1 when calculating the number of REs occupied by the HARQ-ACK bit sequence fed back on the PUSCH. As shown in FIG. 18, when the two-bit downlink allocation indication information is C, the UE determines that the size of the HARQ-ACK bit sequence fed back on the PUSCH is 2, and the bit sequence is Of and, where, and the corresponding secondary serving cell HARQ-ACK response message; the UE uses 0 = 2 when calculating the number of REs occupied by the HARQ-ACK bit sequence fed back on the PUSCH. As shown in FIG. 19, when the two-bit downlink allocation indication information is D, the UE does not need to send a HARQ-ACK response message on the PUSCH. Embodiments 6 to 8 are applied to the following scenario: when the HARQ-ACK feedback mode of the UE is configured as the PUCCH format 3, the HARQ-ACK bit sequence fed back by the UE on the PUSCH is the HARQ corresponding to the corresponding codeword stream of the configured downlink serving cell. The ACK response message is a bit sequence in which the downlink serving cell index is connected from low to high. The 0 used by the UE in calculating the number of REs occupied by the HARQ-ACK bit sequence fed back on the PUSCH is determined by the downlink allocation index. The determining, by using the downlink allocation index, the 0 used by the UE to calculate the number of REs in the HARQ-ACK bit sequence that is fed back on the PUSCH may include: 0 = 2.WZ, where, ” is the value of the downlink allocation indication information, The details are as follows:

Among them, A, B, C, and D are any one of 00, 01, 10, and 11, and are different from each other. When the received 2-bit downlink allocation indication information is "A", if the number of codeword streams received by the UE in the current subframe and the total number of SPS Release DCI Formats exceeds 2, the UE takes =5, otherwise, W = 1. When the received 2-bit downlink allocation indication information is "D", if the UE does not receive the physical downlink shared channel and the SPS Release DCI Format in the current subframe, the UE takes =0, otherwise, W = 1. Embodiment 6 As shown in FIG. 20, the base station configures three serving cells for the UE, where the primary serving cell is configured as a dual codeword stream transmission mode, and the two secondary serving cells are configured as a dual codeword stream transmission mode.

The HARQ-ACK bit sequence fed back by the UE on the PUSCH is a bit sequence of the HARQ-ACK response message corresponding to the corresponding codeword stream of the configured downlink serving cell according to the downlink serving cell index from low to high, r

BP , ⁰ . , ⁰ i AAA , O , the correspondence between the bit sequence and the HARQ-ACK response message on the corresponding codeword stream of the serving cell is as shown in FIG. 20 . Assuming that the current base station performs scheduling on the configured serving cell, the base station will set the downlink allocation indication information to C, and the value of 0 used by the UE in calculating the number of REs occupied by the HARQ-ACK bit sequence fed back on the PUSCH is: 0 = 2.06. Example 7 As shown in FIG. 21, the transmission mode of the configured serving cell and the serving cell is the same as that in Embodiment 6, except that the current scheduling situation is different. Since the HARQ-ACK bit sequence transmitted by the UE on the PUSCH is determined according to the configured serving cell and the corresponding transmission mode, the HARQ-ACK bit sequence fed back by the UE is the same as that in Embodiment 6, and is also nACK r^ACK ^

That is, the bit sequence is . i ^ A ' , , the HARQ-ACK correspondence between the bit sequence and the corresponding codeword stream of the serving cell is as shown in FIG. 21. Assuming that the current base station only schedules the primary serving cell and the secondary serving cell 2, the base station configures the downlink allocation indication information as B. In this case, the UE uses the number of REs occupied by the HARQ-ACK bit sequence fed back on the PUSCH. ^The value of ⁰ is: 0 = 2 = 4. As shown in FIG. 22, the transmission mode of the configured serving cell and the serving cell is the same as that in Embodiment 6, except that the current scheduling situation is different. Since the HARQ-ACK bit sequence transmitted by the UE on the PUSCH is determined according to the configured serving cell and the corresponding transmission mode, the HARQ-ACK bit sequence fed back by the UE is the same as that in Embodiment 6, that is, nACK nACK nACK nACK ^ACK ^ACK

Is ⁰ . ' ⁰ ι AAA , O , the HARQ-ACK correspondence between the bit sequence and the corresponding codeword stream of the serving cell is as shown in FIG. 22. Assuming that the current base station only schedules the primary serving cell, the base station configures the downlink allocation indication information as A. Since the current UE only receives the number of codeword streams from the autonomous serving cell that does not exceed 2, the UE sets the value of ff^ as 1. The UE uses the number of REs occupied by the HARQ-ACK bit sequence fed back on the PUSCH. The value is: 0 = 2.02. It can be seen from the seventh embodiment and the eighth embodiment that when the configured serving cell is not fully scheduled, the base station can adjust the HARQ-ACK bit sequence when the UE feeds back the HARQ-ACK on the PUSCH by configuring the downlink allocation indication information. The RE number is used to reduce the impact on the PUSCH when the HARQ-ACK is transmitted on the PUSCH. Embodiment 9 The embodiment of the present invention provides a feedback processing system for HARQ-ACK, which can be used to implement the methods in Embodiments 1 to 8 above. FIG. 23 is a flowchart of a feedback processing system for HARQ-ACK according to an embodiment of the present invention. As shown in FIG. 23, the system includes: a base station 2302, configured to configure multiple uplink and downlink subframes when the UE 2304 is configured with multiple serving cells. When the value is 1 or 6, and the binding window size is 1, the lower DCI format 0 and/or 4 is sent to the UE 2304, where the two-bit downlink allocation indication in the DCI format 0 and/or 4 is used to indicate the current sub- The downlink scheduling situation of the frame; the UE 2304 is coupled to the base station 2302, and is configured to determine a HARQ-ACK bit sequence fed back on the PUSCH according to the DAI information and/or determine a RE number occupied by the HARQ-ACK bit sequence. In this embodiment, the base station informs the UE of the downlink scheduling situation, and the UE further determines the HARQ-ACK bit sequence fed back on the PUSCH according to the scheduling situation and/or determines the number of REs occupied by the HARQ-ACK bit sequence, thereby enabling the UE to The size of the transmitted HARQ-ACK bit sequence and the occupied resource unit meet the actual needs and do not exceed the feedback actually needed by the base station. When the configured HARQ-ACK feedback mode is channel selection and the configured transmission modes of the two downlink serving cells are all in the dual codeword stream transmission mode, the UE 2304 may be configured to: when the DAI information is A, the UE 2304 Determining that the size of the HARQ-ACK bit sequence is 4, and determining that the bit sequence is ( ^CK , O ^K , O ^K , and O ^, where Of and the HARQ-ACK response message corresponding to the primary serving cell, and the corresponding secondary serving cell The HARQ-ACK response message; the P/or UE 2304 calculates the RE number using 0=4; wherein, the two downlink serving cells include the primary serving cell and the secondary serving cell; when the DAI information is B, the UE 2304 determines the HARQ-ACK. The bit sequence has a size of 2, and the bit sequence is determined as Of and, where, and the HARQ-ACK response message corresponding to the primary serving cell; and/or the UE uses 0 = 2 to calculate the RE number; when the DAI information is C, The UE 2304 determines that the size of the HARQ-ACK bit sequence is 2, and determines that the bit sequence is Of and, where, and the HARQ-ACK response message of the corresponding secondary serving cell; and/or the UE 2304 calculates the RE number using 0=2; When the DAI information is D, the UE 2304 is not in the PUSC. Sending a HARQ-ACK response message on H, the UE 2304 determines that the size of the HARQ-ACK bit sequence and/or the number of REs is 0. When the configured HARQ-ACK feedback mode is channel selection and the configured transmission modes of the two downlink serving cells are is a single codeword streaming mode, UE 2304 for implementing the following: when the DAI information a, UE 2304 determines the size of the sequence of HARQ-ACK bits is 2, and the bit sequence is determined and of which, O ^K corresponding to HARQ-ACK response message of the primary serving cell, corresponding to Of ^CK The HARQ-ACK response message of the secondary serving cell; and/or the UE 2304 calculates the RE number using 0 = 2; wherein, the 2 downlink serving cells include the primary serving cell and the secondary serving cell; when the DAI information is B, the UE 2304 determines the HARQ The size of the -ACK bit sequence is 1, and the bit sequence is determined to be 0 ^CK , where 0 ^CK corresponds to the HARQ-ACK response message of the primary serving cell; and the P/or UE 2304 calculates the RE number using 0 = 1; At C, the UE 2304 determines that the size of the HARQ-ACK bit sequence is 1, and determines that the bit sequence is . t ^CK , where, . t ^CK corresponds to the HARQ-ACK response message of the secondary serving cell; and the P/or UE 2304 calculates the RE number using 0=1; when the DAI information is D, the UE 2304 does not send the HARQ-ACK response message on the PUSCH, and the UE 2304 determines the HARQ. The size of the -ACK bit sequence and/or the number of REs is zero. When the configured HARQ-ACK feedback mode is channel selection and the transmission mode of the primary serving cell in the two downlink serving cells is a dual codeword transmission mode, the transmission mode of the secondary serving cell in the two downlink serving cells is single. In the codeword stream transmission mode, the UE 2304 may perform the following operation: When the DAI information is A, the UE 2304 determines that the size of the HARQ-ACK bit sequence is 3, and determines that the bit sequence is 0 ^CK , O ^K , and, Where, And Ο ⁴ corresponds to the HARQ-ACK response message of the primary serving cell, and O ^K corresponds to the HARQ-ACK response message of the secondary serving cell; and the P/or UE 2304 calculates the RE number by using 0=3; when the DAI information is B, the UE 2304 Determining that the size of the HARQ-ACK bit sequence is 2, and determining that the bit sequence is Of and, where, and the HARQ-ACK response message corresponding to the primary serving cell; and/or the UE 2304 calculating the RE number using 0 = 2; When the information is C, the UE 2304 determines that the size of the HARQ-ACK bit sequence is 1, and determines that the bit sequence is . t ^CK , where, . t ^CK corresponds to the HARQ-ACK response message of the secondary serving cell; and the P/or UE 2304 calculates the RE number using 0=1; when the DAI information is D, the UE 2304 does not send the HARQ-ACK response message on the PUSCH, and the UE 2304 determines the HARQ. The size of the -ACK bit sequence and/or the number of REs is zero. When the configured HARQ-ACK feedback mode is channel selection and the transmission mode of the primary serving cell in the configured two downlink serving cells is a single codeword stream transmission mode, the transmission mode of the secondary serving cell in the two downlink serving cells is dual In the codeword streaming mode, the UE 2304 can perform the following operations: When the DAI information is A, the UE 2304 determines that the size of the HARQ-ACK bit sequence is 3, and determines that the bit sequence is a sum, where 0 ^CK corresponds to the HARQ-ACK response message of the primary serving cell, and onno ^ corresponds to the HARQ of the secondary serving cell. - ACK response message; and P/or UE 2304 calculates the RE number using 0 = 3; when the DAI information is B, the UE 2304 determines that the size of the HARQ-ACK bit sequence is 1, and determines that the bit sequence is 0 ^CK , where, 0 ^CK corresponds to the HARQ-ACK response message of the primary serving cell; and the P/or UE 2304 calculates the RE number using 0=1; when the DAI information is C, the UE 2304 determines that the size of the HARQ-ACK bit sequence is 2, and determines the bit sequence. It is Of and , where, and the HARQ-ACK response message of the corresponding secondary serving cell; and/or the UE 2304 calculates the RE number using 0 = 2; when the DAI information is D, the UE 2304 does not send the HARQ-ACK response on the PUSCH Message, UE 2304 determines that the size of the HARQ-ACK bit sequence and/or the number of REs is zero. When the configured HARQ-ACK feedback mode is the PUCCH format 3, the UE 2304 may perform the following operations: The UE 2304 determines that the HARQ-ACK bit sequence is the HARQ-ACK response message corresponding to the corresponding codeword stream of the configured downlink serving cell according to the downlink service. The cell index is from a low to an advanced bit sequence; and/or the UE 2304 is determined based on the downlink allocation index. , and use 0 to calculate the RE number. Through the foregoing embodiment, the UE may determine a suitable HARQ-ACK bit sequence according to actual conditions. The UE 2304 is configured to determine 0 according to 0 = 2WZ, and W _D ^U _A ^L _I is a value determined according to the DAI information. Preferably, when the DAI information is A, ff takes a value of 1 or 5; when the DAI information is B, ff takes a value of 2; when the DAI information is C, the value is 3; when the DAI information is D, The value is 4 or 0. With this embodiment, the value obtained by the DAI information can be conveniently obtained. In a preferred mode of the embodiment of the present invention, when the DAI information is A, if the total number of codeword streams received by the UE 2304 in the current subframe and the total number of semi-persistent scheduling release DCI formats SPS Release DCI Format exceeds 2, the UE 2304 determines =5, otherwise, the UE determines = 1. In still another preferred mode of the embodiment of the present invention, when the DAI information is D, if the UE 2304 does not receive the physical downlink shared channel and the SPS Release DCI Format in the current subframe, the UE 2304 determines that W=Q, otherwise, the UE OK = 4. Wherein, A, B, C, and D are one of binary numbers of 2 bits, and B, C, and D are not equal to each other. Preferably, when the base station 2302 transmits one or more DCI formats 0 and/or 4 to the UE 2304 on the subframe, the values of the DAI information in the one or more DCI formats are the same. Preferably, when the UE 2304 receives one or more DCI formats 0 and/or 4 on the subframe, the UE 2304 assumes that the values of the DAI information in the one or more DCI formats are the same, for example, when the UE 2304 receives When three of the four DCI formats 0 and/or 4 have the same DAI information, the value of the received DAI information is considered to be the same as the value of the three identical DAI information. In another embodiment, a feedback processing software for HARQ-ACK is provided, which is used to implement the technical solutions described in the foregoing embodiments and preferred embodiments. In another embodiment, a storage medium is provided, wherein the storage mechanism stores the foregoing

HARQ-ACK feedback processing software. In summary, the embodiment of the present invention uses the base station to inform the UE of the downlink scheduling situation, and the UE further determines the HARQ-ACK bit sequence and the P/s that are fed back on the PUSCH according to the scheduling situation, and determines the RE occupied by the HARQ-ACK bit sequence. The number mode achieves the effect of the size of the HARQ-ACK bit sequence transmitted by the UE and the occupied resource unit in accordance with actual needs. Obviously, those skilled in the art should understand that the above modules or steps of the present invention can be implemented by a general-purpose computing device, which can be concentrated on a single computing device or distributed over a network composed of multiple computing devices. Alternatively, they may be implemented by program code executable by the computing device, such that they may be stored in the storage device by the computing device and, in some cases, may be different from the order herein. The steps shown or described are performed, or they are separately fabricated into individual integrated circuit modules, or a plurality of modules or steps are fabricated as a single integrated circuit module. Thus, the invention is not limited to any specific combination of hardware and software. The above description is only a preferred embodiment of the present invention, and is not intended to limit the present invention, and various modifications and changes can be made to the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and scope of the present invention are intended to be included within the scope of the present invention.

Claims

Claim

A hybrid automatic retransmission response message HARQ-ACK feedback processing method, including:

When the user equipment UE is configured with multiple serving cells, the uplink and downlink subframes are configured to be 1 or 6, and the binding window size is 1, the base station sends the downlink control information DCI format 0 and/or 4 to the UE, where The two-bit downlink allocation indication DCI information in the DCI format 0 and/or 4 is used to indicate the downlink scheduling situation of the current subframe;

Determining, by the UE, the HARQ-ACK bit sequence fed back on the physical uplink shared channel PUSCH and/or determining the number of resource unit REs occupied by the HARQ-ACK bit sequence according to the DAI information.

2. The method according to claim 1, wherein, when the configured HARQ-ACK feedback mode is channel selection and the configured transmission modes of the two downlink serving cells are all dual codeword streaming modes, the UE according to the method Determining the HARQ-ACK bit sequence fed back on the PUSCH and/or determining the number of REs occupied by the HARQ-ACK bit sequence includes:

When the DAI information is A, the UE determines that the size of the HARQ-ACK bit sequence is 4, and determines that the bit sequence is ^^^,

And the HARQ-ACK response message corresponding to the primary serving cell, Of PC^ corresponding to the HARQ-ACK response message of the secondary serving cell; and/or the UE calculating the RE number by using 0=4; The two downlink serving cells include the primary serving cell and the secondary serving cell;

When the DAI information is B, the UE determines that the size of the HARQ-ACK bit sequence is 2, and determines that the bit sequence is ^ and, wherein, and a HARQ-ACK response message corresponding to the primary serving cell And/or the UE calculates the RE number using 0 = 2;

When the DAI information is C, the UE determines that the size of the HARQ-ACK bit sequence is 2, and determines that the bit sequence is Of^ and 0^, where Of and the corresponding secondary serving cell a HARQ-ACK response message; and/or the UE calculates the RE number using 0 = 2;

When the DAI information is D, the UE does not send a HARQ-ACK response message on the PUSCH, and the UE determines that the size of the HARQ-ACK bit sequence and/or the RE number is zero.

The method according to claim 1, wherein, when the configured HARQ-ACK feedback mode is channel selection and the configured transmission modes of the two downlink serving cells are all single codeword stream transmission modes, the UE Determining the HARQ-ACK bit sequence fed back on the PUSCH according to the DAI information and/or determining the number of REs occupied by the HARQ-ACK bit sequence includes:

When the DAI information is A, the UE determines that the size of the HARQ-ACK bit sequence is 2, and determines that the bit sequence is a sum, where the HARQ-ACK response message corresponding to the primary serving cell corresponds to the secondary service. a HARQ-ACK response message of the cell; and/or the UE calculates the RE number by using 0=2; wherein, the two downlink serving cells include the primary serving cell and the secondary serving cell;

When the DAI information is B, the UE determines that the size of the HARQ-ACK bit sequence is 1, and determines that the bit sequence is, wherein, the HARQ-ACK response message corresponding to the primary serving cell; and Or the UE calculates the RE number using 0 = 1;

When the DAI information is C, the UE determines that the size of the HARQ-ACK bit sequence is 1, and determines that the bit sequence is, wherein, the HARQ-ACK response message corresponding to the secondary serving cell; and Or the UE calculates the RE number using 0 = 1;

The method according to claim 1, wherein, when the configured HARQ-ACK feedback mode is channel selection and the transmission mode of the primary serving cell in the configured two downlink serving cells is a dual codeword streaming mode, When the transmission mode of the secondary serving cell in the two downlink serving cells is a single codeword stream transmission mode, the UE determines a HARQ-ACK bit sequence fed back on the PUSCH according to the DAI information and/or determines the HARQ-ACK. The number of REs occupied by the bit sequence includes:

When the DAI information is A, the UE determines that the size of the HARQ-ACK bit sequence is 3, and determines that the bit sequence is ^, and, wherein, and a HARQ-ACK response corresponding to the primary serving cell a message, Of ^K corresponding to the HARQ-ACK response message of the secondary serving cell; and/or the UE calculating the RE number by using 0=3;

When the DAI information is C, the UE determines that the size of the HARQ-ACK bit sequence is 1, and determines that the bit sequence is, wherein, the HARQ-ACK response message corresponding to the secondary serving cell; and Or the UE calculates the RE number using 0 = 1; When the DAI information is D, the UE does not send a HARQ-ACK response message on the PUSCH, and the UE determines the size of the HARQ-ACK bit sequence and/or the RE number is 0.

The method according to claim 1, wherein when the configured HARQ-ACK feedback mode is channel selection and the configured transmission mode of the primary serving cell in the two downlink serving cells is a single codeword stream transmission mode, 2 When the transmission mode of the secondary serving cell in the downlink serving cell is a dual codeword stream transmission mode, the UE determines a HARQ-ACK bit sequence fed back on the PUSCH according to the DAI information and/or determines the HARQ-ACK bit sequence. The number of REs occupied includes:

When the DAI information is A, the UE determines that the size of the HARQ-ACK bit sequence is 3, and determines that the bit sequence is ^, and, wherein, the HARQ-ACK response message corresponding to the primary serving cell And onnof^ corresponding to the HARQ-ACK response message of the secondary serving cell; and/or the UE calculating the RE number by using 0=3;

The method according to claim 1, wherein, when the configured HARQ-ACK feedback mode is PUCCH format 3, the UE determines a HARQ-ACK bit sequence and/or determines feedback on the PUSCH according to the DAI information. The number of REs occupied by the HARQ-ACK bit sequence includes:

Determining, by the UE, that the HARQ-ACK bit sequence is a bit sequence of a HARQ-ACK response message corresponding to a corresponding codeword stream of the configured downlink serving cell according to a downlink serving cell index from a low to an advanced level; and/or the UE according to the UE The downlink allocation index determines 0, and uses 0 to calculate the RE number.

The method according to claim 6, wherein the UE determines 0 according to the downlink allocation index: 0 = 2JV, where ff is a value determined according to the DAI information.

8. The method according to claim 7, wherein When the DAI information is A, ff takes a value of 1 or 5; when the DAI information is B, W _D ^U _A ^L _I takes a value of 2; when the DAI information is C, the value of ff is 3; When the DAI information is D, the value is 4 or 0.

9. The method according to claim 8, wherein

When the DAI information is A, if the total number of codeword streams received by the UE in the current subframe and the total number of semi-persistent scheduling release DCI formats SPS Release DCI Format exceeds 2, the UE determines

= l.

10. The method according to claim 8, wherein

When the DAI information is D, if the UE does not receive the physical downlink shared channel and the SPS Release DCI Format in the current subframe, the UE determines =0, otherwise, the UE determines =1.

The method according to any one of claims 2-5, 8-10, wherein A, B, C and D are one of 2 bit binary numbers, and B, C and D are not mutually exclusive equal.

12. The method according to claim 1, wherein: when the base station sends one or more of the DCI formats 0 and/or 4 to the UE on the subframe, one or more of the DCI formats The value of the DAI information in the same is the same.

13. The method according to claim 1, wherein the UE assumes one or more of the DCI formats when the UE receives one or more of the DCI formats 0 and/or 4 on the subframe. The value of the DAI information in the same is the same.

14. A hybrid automatic retransmission response message HARQ-ACK feedback processing system, comprising:

The base station is configured to send the downlink control information DCI format 0 and/or 4 to the UE when the user equipment UE is configured with multiple serving cells, the uplink and downlink subframes are configured to be 1 or 6, and the binding window size is 1. The two-bit downlink allocation indication DAI information in the DCI format 0 and/or 4 is used to indicate a downlink scheduling situation of the current subframe.

And the UE is configured to determine, according to the DAI information, a HARQ-ACK bit sequence fed back on the physical uplink shared channel PUSCH and/or determine a resource unit RE number occupied by the HARQ-ACK bit sequence.