WO2017024860A1 - Acknowledgement information transmission method, apparatus, base station, and terminal - Google Patents

Acknowledgement information transmission method, apparatus, base station, and terminal Download PDF

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Publication number
WO2017024860A1
WO2017024860A1 PCT/CN2016/084162 CN2016084162W WO2017024860A1 WO 2017024860 A1 WO2017024860 A1 WO 2017024860A1 CN 2016084162 W CN2016084162 W CN 2016084162W WO 2017024860 A1 WO2017024860 A1 WO 2017024860A1
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WIPO (PCT)
Prior art keywords
harq
ack
terminal
base station
retransmission
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PCT/CN2016/084162
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French (fr)
Chinese (zh)
Inventor
梁春丽
戴博
夏树强
杨维维
左志松
赵亚军
Original Assignee
中兴通讯股份有限公司
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Publication of WO2017024860A1 publication Critical patent/WO2017024860A1/en

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    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/0001—Systems modifying transmission characteristics according to link quality, e.g. power backoff
    • H04L1/0023—Systems modifying transmission characteristics according to link quality, e.g. power backoff characterised by the signalling
    • H04L1/0027—Scheduling of signalling, e.g. occurrence thereof
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1867—Arrangements specially adapted for the transmitter end

Definitions

  • the present application relates to, but is not limited to, the field of communications, and in particular, to a method, an apparatus, a base station and a terminal for transmitting response information.
  • the code sent by the originator can not only detect errors but also have certain error correction capabilities.
  • the receiver decoder After receiving the codeword, the receiver decoder first checks the error condition. If the error correction capability of the code is within, the error correction is automatically performed. If the error is too much, the error correction capability of the code is exceeded, but the error can be detected.
  • the receiving end sends a decision signal to the sending end through the feedback channel, and requests the originating end to resend the information.
  • OFDM Orthogonal Frequency Division Multiplex
  • ACK/NACK Acknowledgement/Negative-acknowledgement
  • the ACK and NACK are collectively referred to as HARQ-ACK response information.
  • a User Equipment can send a physical downlink shared channel (Physical Uplink Shared Channel, PUSCH for short).
  • the HARQ-ACK response information of the Physical Downlink Shared Channel (PDSCH) may also be transmitted on a Physical Uplink Control Channel (PUCCH).
  • PUCCH Physical Uplink Control Channel
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • Different feedback modes are defined for the time division multiplexing system.
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • Different feedback modes are defined for the time division multiplexing system.
  • FDD Frequency Division Duplex
  • TDD Time Division Duplex
  • Different feedback modes are defined for the time division multiplexing system.
  • the uplink and downlink carriers are one-to-one correspondence, and one uplink subframe corresponds to one downlink subframe
  • LTE defines the PUCCH format 1a/1b to feed back the corresponding HARQ-ACK response information.
  • one uplink subframe may correspond to one or more downlink subframes due to the asymmetry of the uplink and downlink subframe configuration.
  • LTE defines two HARQ-ACK feedback modes, and the HARQ-ACK binding (bundling) ) and HARQ-ACK multiplexing (multiplexing), the HARQ-ACK response information corresponding to one or more downlink subframes is correspondingly processed and transmitted in a PUCCH format 1a/1b and PUCCH format 1b joint channel selection manner.
  • the PUCCH format 1b joint channel selection means that the PUCCH format 1b can carry 2 bits of information by selecting to use different PUCCH channels to carry more HARQ-ACKs, and through channel selection, for example, through 4 different PUCCH channels. Then, the information can be additionally carried by 2 bits, and the PUCCH format 1b joint channel selection can carry up to 4 bits of information, which can correspond to 4 HARQ-ACK response information.
  • FIG. 1 is a schematic structural diagram of a PUCCH format 1a/1b according to the related art
  • FIG. 2 is a schematic structural diagram of a PUCCH format 1b joint channel selection according to the related art. As shown in FIG. 1 and FIG. 2, a PUCCH format 1a/1b is given. A schematic diagram of a joint channel selection with PUCCH format 1b.
  • carrier aggregation is introduced as a key technology, that is, by aggregating the bandwidth of the LTE system to obtain a larger transmission bandwidth.
  • LTE Release 10 aggregation of up to 5 carriers can be supported.
  • the defined PUCCH format 1a/1b can support up to 2 bits of HARQ-ACK feedback, and the PUCCH format 1b joint channel selection also supports up to 4 bits of HARQ-ACK feedback. Therefore, in Release 10, The PUCCH format 3 is introduced to support feedback of up to 22 bits, and FIG. 3 is a schematic structural diagram of the PUCCH format 3 according to the related art.
  • the carrier aggregation technology is further enhanced to support aggregation up to 32 carriers.
  • the HARQ-ACK that requires feedback also increases.
  • PUCCH format 3 can only support up to 22 bits of feedback, that is, the existing PUCCH format cannot support HARQ-ACK feedback when Release 13 supports up to 32 carriers.
  • one conclusion is to introduce at least one new PUCCH format.
  • a Cyclic Redundancy Check (CRC) needs to be added.
  • the base station side determines whether the transmitted HARQ-ACK is incorrect according to whether the CRC passes. When the CRC fails, it indicates that the transmitted HARQ-ACK is incorrect, but does not know which HARQ-ACK is incorrect.
  • the base station needs to put the PDSCH on all carriers/subframes that were last scheduled.
  • the transmission is retransmitted.
  • the CRC error due to the CRC error, a large number of unnecessary PDSCH retransmissions are caused, the downlink resources are wasted, and the spectrum efficiency is affected.
  • the determination of the number of HARQ-ACK bits is also a problem to be solved in the HARQ-ACK feedback.
  • the present invention provides a method, an apparatus, a base station, and a terminal for transmitting response information, so as to at least solve the problem that unnecessary PDSCH retransmission wastes downlink resources in the related art.
  • the embodiment of the invention provides a method for transmitting response information, including:
  • the base station configures a hybrid mode of the hybrid automatic request retransmission response message HARQ-ACK of the terminal;
  • the base station receives a HARQ-ACK sent by the terminal according to the sending mode.
  • the sending mode of the HARQ-ACK includes at least one of the following:
  • the sending mode of the hybrid automatic request retransmission response message HARQ-ACK of the base station configuration terminal includes at least one of the following:
  • the base station and the terminal agree that the default mode is the support retransmission mode
  • the sending mode of the terminal is one of the sending modes
  • the base station indicates the support retransmission mode by using a second configuration parameter of the high layer signaling
  • the base station indicates the repeated transmission mode by using a third configuration parameter of the high layer signaling.
  • the second configuration parameter is a newly added parameter
  • the third configuration parameter is a newly added parameter
  • the third configuration parameter is a parameter of a related protocol.
  • the method further includes:
  • the base station configures the transmission mode of the HARQ-ACK of the terminal to be the repeated transmission mode
  • the base station configures the number of times the HARQ-ACK is repeatedly transmitted and the resources used when the transmission is repeated.
  • the method further includes:
  • the base station When the base station configures the HARQ-ACK transmission mode of the terminal to be in the retransmission mode, the base station sends downlink control information indicating that the terminal performs HARQ-ACK retransmission, including at least one of the following:
  • the base station instructs the terminal to perform HARQ-ACK retransmission by using an error acknowledgement information NACK on the physical hybrid automatic retransmission indication information PHICH;
  • the base station instructs the terminal to perform HARQ-ACK retransmission by using downlink control information DCI transmitted on the physical downlink control channel PDCCH or the enhanced physical downlink control channel EPDCCH.
  • the resource of the PHICH is determined according to a resource that carries the HARQ-ACK
  • the method further includes at least one of the following manners:
  • the base station is indicated by a specific state of an existing control domain of the existing DCI, where the specific state of the existing control domain of the DCI is a state in which the related protocol is not used;
  • the base station scrambles the existing DCI by using a dedicated radio network temporary identifier RNTI, where the dedicated RNTI is used to indicate that the DCI scrambled by using the RNTI is a DCI indicating that the terminal performs HARQ-ACK retransmission.
  • the private RNTI is configured to the terminal by using high layer signaling.
  • the DCI includes at least one of the following in addition to the control domain for indicating HARQ-ACK retransmission:
  • the method further includes:
  • the base station When the base station configures the HARQ-ACK transmission mode of the terminal to be in the support retransmission mode, the base station receives a HARQ-ACK that is sent by the terminal for the first time in the first preset subframe;
  • the base station If the base station detects that the HARQ-ACK transmission sent by the terminal in the first preset subframe is incorrect, the base station does not send the HARQ-ACK corresponding to the second preset subframe.
  • the base station receives the HARQ-ACK retransmission information sent by the terminal on the third preset subframe.
  • the base station and the terminal agree to repeat the sending when the HARQ-ACK is retransmitted.
  • the number of times is incremented relative to the previous number of transmissions.
  • the DCI is sent on the primary downlink component carrier
  • the DCI is transmitted on a primary component carrier corresponding to the PUCCH serving cell group.
  • the method further includes:
  • the base station carries Downlink Assignment Index (DAI) information in the DCI, and the DAI information is used by the terminal to determine the transmitted HARQ-ACK.
  • DAI Downlink Assignment Index
  • the DAI information is a newly added control domain or an existing control domain in the DCI, and the DAI information is different in meanings represented by different DCIs, where the different DCIs refer to different serving cells or subframes. DCI.
  • the method further includes:
  • the base station indicates, by a DAI in the DCI of the preceding Nm serving cells in the scheduled N serving cells, that the number of serving cells that have been scheduled by the current serving cell in a certain order, and the last m of the N serving cells that are scheduled
  • the DAI in the DCI of the serving cell indicates the total number of serving cells scheduled in the current subframe; or the DAI in the DCI of the Nm serving cell in which the DAI of the last m serving cells is repeatedly scheduled; or, the last m serving cells
  • the DAI in the DCI and the DAI of the scheduled Nm serving cell have the preset offset values and are the same, where N and m are both positive integers, and m is a negotiated value between the base station and the terminal.
  • the embodiment of the invention further provides a method for transmitting response information, including:
  • the terminal determines a transmission mode of the hybrid automatic request retransmission response message HARQ-ACK
  • the terminal sends a HARQ-ACK to the base station according to a transmission mode of the HARQ-ACK configured by the base station.
  • the sending mode of the HARQ-ACK includes at least one of the following:
  • the determining, by the terminal, that the sending mode of the HARQ-ACK includes at least one of the following:
  • the terminal and the base station agree that the default mode is the support retransmission mode
  • the sending mode of the terminal is one of the sending modes
  • the base station indicates the support retransmission mode by using a second configuration parameter of the high layer signaling
  • the base station indicates the repeated transmission mode by using a third configuration parameter of the high layer signaling.
  • the second configuration parameter is a newly added configuration parameter
  • the third configuration parameter is a newly added configuration parameter
  • the third configuration parameter is a configuration parameter of a related protocol.
  • the sending the HARQ-ACK to the base station according to the sending mode of the HARQ-ACK configured by the base station includes:
  • the terminal When the HARQ-ACK transmission mode is determined to be the repeated transmission mode, the terminal repeatedly transmits the HARQ-ACK by using a resource configured by a higher layer on consecutive uplink subframes, where the consecutive uplink subframe numbers are High-level configuration.
  • the method further includes:
  • the terminal When the HARQ-ACK transmission mode is determined to be the support retransmission mode, the terminal receives downlink control information that is sent by the base station and indicates that the terminal performs HARQ-ACK retransmission, and the terminal is configured according to the downlink control information. Determine whether to perform HARQ-ACK retransmission.
  • the terminal receives downlink control information that is sent by the base station and indicates that the terminal performs HARQ-ACK retransmission, and includes at least one of the following:
  • the terminal receives downlink control information that is sent on the physical hybrid automatic retransmission indication information PHICH, and the resources of the PHICH are determined according to resources that carry the HARQ-ACK;
  • the terminal receives downlink control information DCI transmitted on the physical downlink control channel PDCCH or the enhanced physical downlink control channel EPDCCH.
  • the method further includes:
  • the terminal When the terminal receives the error response information NACK on the PHICH, the terminal performs HARQ-ACK retransmission;
  • the terminal When the preset control domain in the DCI received by the terminal is a preset specific state, the terminal performs HARQ-ACK retransmission.
  • the DCI includes at least one of the following in addition to the control domain for indicating HARQ-ACK retransmission:
  • the method further includes:
  • the terminal uses the proprietary radio network temporary identifier RNTI to descramble the DCI, and acquires HARQ-ACK retransmission information related to the terminal according to the index information of the high layer configuration.
  • the terminal when the downlink control information indicates that the terminal is to perform HARQ-ACK retransmission, the terminal performs HARQ-ACK retransmission on the third preset uplink subframe.
  • the terminal when the HARQ-ACK transmission mode is determined to support the retransmission mode, the terminal does not receive the downlink retransmission corresponding to the HARQ-ACK sent by the base station before the second preset subframe.
  • the terminal performs the HARQ-ACK retransmission in the third preset uplink subframe.
  • the terminal performs HARQ-ACK retransmission on the third preset uplink subframe, including at least one of the following:
  • the terminal When the terminal does not have a physical uplink shared channel PUSCH transmission on the third preset uplink subframe, or the terminal has a PUSCH transmission on the third preset subframe, and the terminal is configured to allow physical uplink control.
  • the terminal When the channel PUCCH and the PUSCH are transmitted simultaneously, the terminal performs a HARQ-ACK retransmission using the preset PUCCH resource in the third preset subframe, where the third preset uplink subframe is according to the downlink.
  • the uplink subframe that is determined by the control information, or the uplink subframe that is agreed with the base station, where the preset PUCCH resource is a PUCCH resource determined according to the downlink control information, or a PUCCH resource configured by a higher layer;
  • the terminal When the terminal has PUSCH transmission on the third preset subframe, and the terminal is configured to not allow PUCCH and PUSCH to transmit simultaneously, the terminal is on the PUSCH in the third preset subframe. Perform HARQ-ACK retransmission.
  • the terminal adopts a high-level configuration on consecutive uplink subframes.
  • the HARQ-ACK is repeatedly sent on the resource, where the consecutive uplink subframes are configured by a higher layer, and then the method further includes:
  • the terminal performs subsequent processing in the support retransmission mode according to the HARQ-ACK transmission mode, where the terminal performs repeated transmission processing when the HARQ-ACK is to be sent.
  • the terminal when the HARQ-ACK transmission mode is determined to be the combined mode of the retransmission mode and the repeated transmission mode, the terminal performs HARQ-ACK retransmission according to an agreement with the base station.
  • the number of repeated transmissions is incremented relative to the previous number of transmissions.
  • the method further includes:
  • the terminal Before transmitting the HARQ-ACK to the base station, the terminal determines the number of HARQ-ACK bits that need to be fed back and the HARQ-ACK bit sequence that is fed back.
  • the determining the number of HARQ-ACK bits that need to be fed back and the feedback HARQ-ACK bit sequence include:
  • the terminal determines, according to the DAI sent by the base station, the number of HARQ-ACK bits that need to be fed back and the HARQ-ACK bit sequence that is fed back.
  • the DAI information is a newly added control domain or an existing control domain in the DCI, and the DAI information is different in meanings represented by different DCIs, where the different DCIs refer to different serving cells or sub- The DCI of the frame.
  • the method further includes:
  • the DAI in the DCI of the first Nm serving cells in the N scheduled serving cells indicates that the number of serving cells that have been scheduled by the current serving cell is in a certain order, and the N services are scheduled.
  • the DAI in the DCI of the last m serving cells in the cell indicates the total number of serving cells scheduled in the current subframe; or the DAI in the DCI of the Nm serving cell in which the DAI in the last m serving cells is repeatedly scheduled; or
  • the DAI in the DCI of the last m serving cells and the DAI of the DCI of the scheduled Nm serving cells have preset offset values and are the same, where N and m are positive integers, and m is a base station and terminal agreement Good value.
  • the embodiment of the invention further provides a computer readable storage medium storing computer executable instructions, the method for transmitting the response information being implemented when the computer executable instructions are executed.
  • the embodiment of the invention further provides a transmission device for response information, which is located in the base station and includes:
  • a configuration module configured to: a base station configuration terminal, a hybrid automatic request retransmission response message, a HARQ-ACK transmission mode;
  • the receiving module is configured to: the base station receives the HARQ-ACK sent by the terminal according to the sending mode.
  • the sending mode of the HARQ-ACK includes at least one of the following:
  • the configuration module includes at least one of the following:
  • a first configuration unit configured to: the terminal and the base station agree that a default mode is the support retransmission mode
  • a second configuration unit configured to: indicate, by the base station, that a sending mode of the terminal is one of the sending modes by using a first configuration parameter of the high layer signaling;
  • a third configuration unit configured to: indicate, by the second base station, the support retransmission mode by using a second configuration parameter of the high layer signaling;
  • a fourth configuration unit configured to: indicate, by the base station, the repeated transmission mode by using a third configuration parameter of the high layer signaling.
  • the embodiment of the invention further provides a base station, comprising: the transmission device of the response information according to any one of the above.
  • the embodiment of the invention further provides a device for transmitting response information, which is located in the terminal, and includes:
  • Determining a module configured to: determine, by the terminal, a transmission mode of the hybrid automatic request retransmission response message HARQ-ACK;
  • the sending module is configured to: send, by the terminal, a HARQ-ACK to the base station according to a transmission mode of the HARQ-ACK configured by the base station.
  • the sending mode of the HARQ-ACK includes at least one of the following:
  • the determining module includes at least one of the following:
  • a first determining unit configured to: the terminal and the base station agree that a default mode is the support retransmission mode
  • a second determining unit configured to: indicate, by the base station, that the sending mode of the terminal is one of the sending modes by using a first configuration parameter of the high layer signaling;
  • a third determining unit configured to: the base station indicates the support retransmission mode by using a second configuration parameter of the high layer signaling;
  • a fourth determining unit configured to: indicate, by the base station, the repeated transmission mode by using a third configuration parameter of the high layer signaling.
  • the embodiment of the invention further provides a terminal, comprising: the transmission device of the response information according to any one of the above items.
  • the base station configures a hybrid automatic request retransmission response message HARQ-ACK transmission mode of the terminal, and the base station receives the HARQ-ACK sent by the terminal according to the transmission mode, and solves unnecessary PDSCH retransmission.
  • the problem of wasting downlink resources increases the utilization of downlink resources.
  • FIG. 1 is a schematic structural diagram of a PUCCH format 1a/1b according to the related art
  • FIG. 2 is a schematic structural diagram of joint channel selection according to PUCCH format 1b in the related art
  • FIG. 3 is a schematic structural diagram of a PUCCH format 3 according to the related art
  • FIG. 5 is a flowchart of another method for transmitting response information according to an embodiment of the present invention.
  • FIG. 6 is a structural block diagram of a transmission apparatus for response information according to an embodiment of the present invention.
  • FIG. 7 is a structural block diagram of another apparatus for transmitting response information according to an embodiment of the present invention.
  • FIG. 8 is a structural diagram of a candidate new PUCCH format according to an alternative embodiment of the present invention. intention.
  • FIG. 9 is a schematic diagram showing an example of PDSCH transmission, HARQ-ACK transmission, and PDSCH retransmission according to an optional embodiment of the present invention.
  • FIG. 10 is a schematic diagram of a DCI design in accordance with an alternate embodiment of the present invention.
  • FIG. 11 is a diagram showing an example of PDSCH retransmission according to an alternative embodiment of the present invention.
  • FIG. 12 is a diagram showing an example of an appointment retransmission mode without transmitting a new packet or a retransmission packet, in accordance with an alternative embodiment of the present invention.
  • FIG. 13 is a schematic diagram showing an example of a processing procedure of a terminal base station when a base station configures a HARQ-ACK transmission mode of a terminal to be a repetitive combined retransmission mode according to an alternative embodiment of the present invention
  • FIG. 14 is another schematic diagram of a process of a terminal base station processing when a base station configures a HARQ-ACK transmission mode of a terminal to be a repeated combined retransmission mode according to an alternative embodiment of the present invention
  • Figure 15 is a first schematic diagram of a DAI in accordance with an alternative embodiment of the present invention.
  • FIG. 16 is a second schematic diagram of a DAI in accordance with an alternative embodiment of the present invention.
  • FIG. 17 is a third schematic diagram of a DAI in accordance with an alternative embodiment of the present invention.
  • Figure 18 is a fourth schematic diagram of a DAI in accordance with an alternative embodiment of the present invention.
  • FIG. 19 is a fifth schematic diagram of a DAI in accordance with an alternative embodiment of the present invention.
  • FIG. 20 is a sixth schematic diagram of a DAI in accordance with an alternative embodiment of the present invention.
  • FIG. 21 is a seventh schematic diagram of a DAI in accordance with an alternative embodiment of the present invention.
  • FIG. 4 is a flowchart of a method for transmitting response information according to an embodiment of the present invention. As shown in FIG. 4, the method includes the following steps:
  • Step S402 the base station configures a hybrid automatic request retransmission response message HARQ-ACK transmission mode of the terminal;
  • Step S404 the base station receives the HARQ-ACK sent by the terminal according to the sending mode.
  • the base station configures the hybrid automatic request retransmission acknowledgement message HARQ-ACK transmission mode of the terminal, and the base station receives the HARQ-ACK sent by the terminal according to the transmission mode, and solves the unnecessary PDSCH retransmission wastedown.
  • the problem of resources has improved the utilization of downlink resources.
  • the sending mode of the HARQ-ACK may include at least one of the following:
  • the sending mode of the hybrid automatic request retransmission response message HARQ-ACK of the base station configuration terminal may include at least one of the following:
  • the base station and the terminal agree that the default mode is the support retransmission mode
  • the base station indicates, by using a first configuration parameter of the high layer signaling, that the sending mode of the terminal is one of the sending modes;
  • the base station In a third mode, the base station indicates the support retransmission mode by using a second configuration parameter of the high layer signaling
  • the base station In a fourth mode, the base station indicates the repeated transmission mode by using a third configuration parameter of the high layer signaling.
  • the second configuration parameter may be a newly added parameter
  • the third configuration parameter may be a newly added parameter
  • the third configuration parameter may be a parameter of a related protocol
  • the protocol is, for example, a protocol specified in the standard version of LTE and its subsequent evolution.
  • the method may further include:
  • the base station configures the transmission mode of the HARQ-ACK of the terminal to be the repeated transmission mode
  • the base station configures the number of times the HARQ-ACK is repeatedly transmitted and the resources used when the transmission is repeated.
  • the method may further include:
  • the base station When the base station configures the HARQ-ACK transmission mode of the terminal to be in the retransmission mode, the base station sends downlink control information indicating that the terminal performs HARQ-ACK retransmission, including at least one of the following:
  • the base station instructs the terminal to perform HARQ-ACK retransmission by using an error acknowledgement information NACK on the physical hybrid automatic retransmission indication information PHICH;
  • the base station instructs the terminal to perform HARQ-ACK retransmission by using downlink control information (Downlink Control Information, DCI for short) transmitted on the physical downlink control channel PDCCH or the enhanced physical downlink control channel (EPDCCH).
  • Downlink Control Information Downlink Control Information, DCI for short
  • PDCCH Physical Downlink control channel
  • EPDCCH enhanced physical downlink control channel
  • the resource of the PHICH may be determined according to a resource that carries the HARQ-ACK
  • the method may further include at least one of the following manners:
  • the base station is indicated by a specific state of an existing control domain of the existing DCI, where the specific state of the existing control domain of the DCI is a state in which the related protocol is not used;
  • the base station scrambles the DCI of the existing size by using a dedicated radio network temporary identifier RNTI, where the dedicated RNTI is used to indicate that the DCI scrambled by the RNTI is used to indicate that the terminal performs HARQ-ACK retransmission.
  • the DCI wherein the private RNTI is configured to the terminal by higher layer signaling.
  • the DCI may include at least one of the following in addition to the control domain for indicating HARQ-ACK retransmission:
  • the method may further include:
  • the base station When the base station configures the HARQ-ACK transmission mode of the terminal to be in the support retransmission mode, the base station receives a HARQ-ACK that is sent by the terminal for the first time in the first preset subframe;
  • the base station If the base station detects that the HARQ-ACK transmission sent by the terminal in the first preset subframe is incorrect, the base station does not send the HARQ-ACK corresponding to the second preset subframe.
  • the base station receives the HARQ-ACK retransmission information sent by the terminal on the third preset subframe.
  • the base station and the terminal agree that the HARQ-ACK is heavy.
  • the number of repeated transmissions is incremented relative to the previous number of transmissions.
  • the DCI when the configuration of the HARQ-ACK is sent on one physical uplink control channel PUCCH, the DCI may be sent on the primary downlink component carrier;
  • the DCI may be transmitted on a primary component carrier corresponding to the PUCCH serving cell group.
  • the method may further include:
  • the base station carries Downlink Assignment Index (DAI) information in the DCI, and the DAI information is used by the terminal to determine the transmitted HARQ-ACK.
  • DAI Downlink Assignment Index
  • the DAI information may be a newly added control domain or an existing control domain in the DCI, and the meanings of the DAI information may be different in different DCIs, where the different DCIs may refer to different services.
  • the base station may indicate the number of serving cells that have been scheduled by the current serving cell in a certain order by the DAI in the DCI of the preceding Nm serving cells in the scheduled N serving cells, and the scheduled N
  • the DAI in the DCI of the last m serving cells in the serving cell indicates the total number of serving cells scheduled in the current subframe; or the DAI in the DCI of the Nm serving cell in which the DAI in the last m serving cells is repeatedly scheduled;
  • the DAI in the DCI of the last m serving cells and the DAI of the DCI of the scheduled Nm serving cells have preset offset values, and both are N and m are positive integers, and m is a base station and a terminal. The agreed value is good.
  • FIG. 5 is a flowchart of another method for transmitting response information according to an embodiment of the present invention. As shown in FIG. 5, the method includes the following steps:
  • Step S502 the terminal determines a transmission mode of the HARQ-ACK.
  • Step S504 The terminal sends a HARQ-ACK to the base station according to a transmission mode of the HARQ-ACK configured by the base station.
  • the terminal determines the transmission mode of the HARQ-ACK, and the terminal sends the HARQ-ACK to the base station according to the transmission mode, which solves the problem that the unnecessary PDSCH retransmission wastes the downlink resources and improves the utilization of the downlink resources.
  • the sending mode of the HARQ-ACK may include at least one of the following:
  • the terminal determines that the transmission mode of the HARQ-ACK may include at least one of the following:
  • the terminal and the base station agree that the default mode is the support retransmission mode
  • the base station indicates, by using a first configuration parameter of the high layer signaling, that the sending mode of the terminal is one of the sending modes;
  • the base station In a third mode, the base station indicates the support retransmission mode by using a second configuration parameter of the high layer signaling
  • the base station In a fourth mode, the base station indicates the repeated transmission mode by using a third configuration parameter of the high layer signaling.
  • the second configuration parameter may be a newly added configuration parameter
  • the third configuration parameter may be a newly added configuration parameter
  • the third configuration parameter may be a configuration parameter of a related protocol
  • the protocol is, for example, a protocol specified in the standard version of LTE and its subsequent evolution.
  • the sending the HARQ-ACK to the base station according to the transmission mode of the HARQ-ACK configured by the base station may include:
  • the terminal When the HARQ-ACK transmission mode is determined to be the repeated transmission mode, the terminal repeatedly transmits the HARQ-ACK by using a resource configured by a higher layer on consecutive uplink subframes, where the consecutive uplink subframe numbers are High-level configuration.
  • the method may further include:
  • the terminal When the HARQ-ACK transmission mode is determined to be the support retransmission mode, the terminal is connected Receiving, by the base station, downlink control information indicating that the terminal performs HARQ-ACK retransmission, and the terminal determines, according to the downlink control information, whether to perform HARQ-ACK retransmission.
  • the terminal receives the downlink control information that is sent by the base station and indicates that the terminal performs the HARQ-ACK retransmission, and may include at least one of the following:
  • the terminal receives downlink control information that is sent on the PHICH, and the resources of the PHICH are determined according to resources that carry the HARQ-ACK;
  • the terminal receives a DCI transmitted on a PDCCH or an EPDCCH.
  • the terminal when the terminal receives the NACK on the PHICH, the terminal may perform HARQ-ACK retransmission;
  • the terminal may perform HARQ-ACK retransmission.
  • the DCI may include at least one of the following in addition to the control domain for indicating HARQ-ACK retransmission:
  • the terminal may use the proprietary RNTI to descramble the DCI, and obtain the HARQ-ACK retransmission information related to the terminal according to the index information configured by the upper layer.
  • the terminal may perform HARQ-ACK retransmission on the third preset uplink subframe.
  • the terminal when the HARQ-ACK transmission mode is determined to support the retransmission mode, the terminal does not receive the HARQ- sent by the base station before the second preset subframe.
  • the terminal may perform uplink HARQ-ACK retransmission in the third preset uplink subframe when the downlink retransmission data packet or the new data packet corresponding to the ACK includes the NACK in the HARQ-ACK information sent by the terminal.
  • the terminal performs HARQ-ACK retransmission on the third preset uplink subframe, and may include at least one of the following:
  • the terminal When the terminal does not transmit PUSCH on the third preset uplink subframe, or the terminal has PUSCH transmission on the third preset subframe, and the terminal is configured to allow PUCCH and PUSCH to transmit simultaneously, The terminal performs HARQ-ACK retransmission on the third preset subframe by using a preset PUCCH resource, where the third preset uplink subframe is an uplink subframe determined according to the downlink control information, Or the uplink subframe that is agreed with the base station, where the preset PUCCH resource is a PUCCH resource determined according to the downlink control information, or a PUCCH resource configured by a higher layer;
  • the terminal When the terminal has PUSCH transmission on the third preset subframe, and the terminal is configured to not allow PUCCH and PUSCH to transmit simultaneously, the terminal is on the PUSCH in the third preset subframe. Perform HARQ-ACK retransmission.
  • the terminal may adopt a resource repetition of a high-level configuration on consecutive uplink subframes. Transmitting the HARQ-ACK, where the consecutive uplink subframes are configurable by a higher layer, and then performing subsequent processing for the support retransmission mode according to a HARQ-ACK transmission mode, where the terminal sends a HARQ-ACK At the same time, the transmission process is repeated.
  • the terminal when the HARQ-ACK transmission mode is determined to be the combined mode of supporting the retransmission mode and the repeated transmission mode, the terminal is performing according to an agreement with the base station.
  • the number of repeated transmissions is incremented relative to the previous number of transmissions.
  • the number of HARQ-ACK bits that need to be fed back and the HARQ-ACK bit sequence that is fed back may be determined.
  • the determining the number of HARQ-ACK bits that need to be fed back and the feedback HARQ-ACK bit sequence may include:
  • the terminal determines, according to the DAI sent by the base station, the number of HARQ-ACK bits that need to be fed back and the HARQ-ACK bit sequence that is fed back.
  • the DAI information may be a newly added control domain or an existing control domain in the DCI, and the meaning of the DAI information may be different in different DCIs, where the different DCI may refer to DCI for different serving cells or subframes.
  • the terminal may schedule N serving cells according to an agreement with the base station.
  • the DAI in the DCI of the preceding Nm serving cells indicates that the number of serving cells that have been scheduled by the current serving cell in a certain order is determined, and the DAI in the DCI of the last m serving cells in the scheduled N serving cells indicates the current sub- The total number of serving cells scheduled by the frame; or the DAI in the DCI of the Nm serving cells of the DAI repeatedly scheduled in the DCI of the last m serving cells; or the DAI in the DCI of the last m serving cells and the scheduled Nm
  • the DAIs of the DCIs of the serving cells have preset offset values and are the same, where N and m are positive integers, and m is a good value agreed between the base station and the terminal.
  • the embodiment of the invention further provides a computer readable storage medium storing computer executable instructions, the method for transmitting the response information being implemented when the computer executable instructions are executed.
  • a device for transmitting response information is provided, and the device is configured to implement the foregoing embodiments and optional embodiments, and details are not described herein.
  • the term "module” may implement a combination of software and/or hardware of a predetermined function.
  • the devices described in the following embodiments may be implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
  • FIG. 6 is a structural block diagram of a device for transmitting response information according to an embodiment of the present invention.
  • the device is located in a base station. As shown in FIG. 6, the device includes:
  • the configuration module 62 is configured to: the base station configures a mode of the hybrid automatic request retransmission response message HARQ-ACK of the terminal;
  • the receiving module 64 is configured to: the base station receives the HARQ-ACK sent by the terminal according to the sending mode.
  • the base station configures a hybrid automatic request retransmission response message (HARQ-ACK) transmission mode of the terminal, and the base station receives the HARQ-ACK sent by the terminal according to the transmission mode, and solves unnecessary PDSCH retransmission wastedown.
  • HARQ-ACK hybrid automatic request retransmission response message
  • the transmission mode of the HARQ-ACK may include at least one of the following: a normal transmission mode; a repeated transmission mode; and a retransmission mode.
  • the configuration module may include at least one of the following:
  • a first configuration unit configured to: the terminal and the base station agree that a default mode is the support Retransmission mode
  • a second configuration unit configured to: indicate, by the base station, that a sending mode of the terminal is one of the sending modes by using a first configuration parameter of the high layer signaling;
  • a third configuration unit configured to: indicate, by the second base station, the support retransmission mode by using a second configuration parameter of the high layer signaling;
  • a fourth configuration unit configured to: indicate, by the base station, the repeated transmission mode by using a third configuration parameter of the high layer signaling.
  • a base station is further provided, where the base station includes the transmission device of the response information according to any one of the foregoing.
  • FIG. 7 is a structural block diagram of another apparatus for transmitting response information according to an embodiment of the present invention, which is located in a terminal. As shown in FIG. 7, the apparatus includes:
  • the determining module 72 is configured to: determine, by the terminal, a transmission mode of the HARQ-ACK;
  • the sending module 74 is configured to: send, by the terminal, a HARQ-ACK to the base station according to a transmission mode of the HARQ-ACK configured by the base station.
  • the terminal determines the transmission mode of the HARQ-ACK, and the terminal sends the HARQ-ACK to the base station according to the transmission mode, which solves the problem that the unnecessary PDSCH retransmission wastes the downlink resources and improves the utilization of the downlink resources.
  • the transmission mode of the HARQ-ACK may include at least one of the following: a normal transmission mode; a repeated transmission mode; and a retransmission mode.
  • the determining module may include at least one of the following:
  • a first determining unit configured to: the terminal and the base station agree that a default mode is the support retransmission mode
  • a second determining unit configured to: indicate, by the base station, that the sending mode of the terminal is one of the sending modes by using a first configuration parameter of the high layer signaling;
  • a third determining unit configured to: the base station indicates the support retransmission mode by using a second configuration parameter of the high layer signaling;
  • a fourth determining unit configured to: indicate, by the base station, a third configuration parameter of the high layer signaling The repeat transmission mode is described.
  • a terminal is further provided, and the terminal includes the transmission device of the response information according to any one of the foregoing.
  • the optional embodiment provides a base station, which configures a HARQ-ACK transmission mode of the terminal, and receives a HARQ-ACK sent by the terminal.
  • the HARQ-ACK transmission mode includes at least one of: a normal transmission mode; a repeated transmission mode; and a retransmission mode.
  • the HARQ-ACK sending mode of the configuration terminal includes, but is not limited to, the following manners:
  • the default mode agreed with the terminal is to support the retransmission mode
  • the three HARQ-ACK transmission modes are configured by high layer signaling
  • the "repetitive transmission mode" is configured through high layer signaling.
  • the “support retransmission mode” may be a newly added configuration parameter
  • the “repeated transmission mode” may be a newly added configuration parameter or an existing configuration parameter.
  • the base station when the base station configures the HARQ-ACK transmission mode of the terminal to be a repeat transmission mode, the base station further needs to configure the number of times the HARQ-ACK is repeatedly transmitted and the resources used when the transmission is repeated.
  • the base station when the base station configures the HARQ-ACK transmission mode of the terminal to support the retransmission mode, the base station sends downlink control information indicating that the terminal performs HARQ-ACK retransmission, including but not limited to the following. the way:
  • the base station instructs the terminal to perform HARQ-ACK retransmission by using a NACK on the PHICH;
  • the base station instructs the terminal to perform HARQ-ACK retransmission by using DCI transmitted on the PDCCH or the EPDCCH;
  • the base station automatically retransmits the indication channel by physical hybrid (Physical Hybrid
  • Physical Hybrid Physical Hybrid
  • the resource of the PHICH is determined according to the resource carrying the HARQ-ACK when the terminal performs the HARQ-ACK retransmission by the NACK on the ARQ Indicator Channel (PHICH).
  • the base station indicates the terminal by using a DCI sent on a Physical Downlink Control Channel (PDCCH) or an Enhanced Physical Downlink Control Channel (EPDCCH).
  • PDCH Physical Downlink Control Channel
  • EPDCCH Enhanced Physical Downlink Control Channel
  • the base station is indicated by a specific state of an existing control domain of the existing DCI, wherein the specific state of the existing control domain of the DCI is a state in which the existing protocol is not used;
  • the base station scrambles the DCI of the existing size by using a proprietary Radio Network Temporary Identity (RNTI), where the dedicated RNTI is used to indicate that the DCI scrambled by the RNTI is used as an indication.
  • RNTI Radio Network Temporary Identity
  • the terminal performs DCI of HARQ-ACK retransmission.
  • the dedicated RNTI is configured to the terminal by using high layer signaling.
  • the DCI includes at least one of the following in addition to the control domain for indicating HARQ-ACK retransmission:
  • the DCI is transmitted on a primary downlink component carrier (a component carrier, also called a serving cell).
  • a component carrier also called a serving cell
  • the DCI is sent on a primary component carrier corresponding to the PUCCH serving cell group.
  • the base station when the base station configures the HARQ-ACK transmission mode of the terminal to support a retransmission mode, the base station receives a HARQ-ACK sent by the terminal for the first time in the first preset subframe, if The base station detects that the HARQ-ACK transmission sent by the terminal in the first preset subframe is incorrect, and the base station does not send the downlink retransmission data packet corresponding to the HARQ-ACK or before the second preset subframe. In the case of a new data packet, the base station receives the HARQ-ACK retransmission information transmitted by the terminal on the third preset subframe.
  • the base station and the terminal agree to repeat the sending when the HARQ-ACK is retransmitted.
  • the number of times is incremented relative to the previous number of transmissions.
  • the DAI information may be a newly added control domain or an existing control domain in the DCI, and the meanings of the DAI information may be different in different DCIs, where the different DCIs may refer to different serving cells. Or the DCI of the subframe.
  • the base station indicates, according to the DAI in the DCI of the preceding Nm serving cells in the scheduled N serving cells, that the number of serving cells that have been scheduled by the current serving cell is scheduled in a certain order, and is scheduled.
  • the DAI in the DCI of the last m serving cells of the N serving cells indicates the total number of serving cells scheduled in the current subframe; or, in the DCI of the Nm serving cells in which the DAI of the last m serving cells is repeatedly scheduled.
  • the DAI in the DCI of the last m serving cells and the DAI of the DCI of the scheduled Nm serving cells have preset offset values and are the same, where N and m are positive integers, and m is The base station and the terminal agree on a good value.
  • the optional embodiment further provides a terminal, which determines a transmission mode of the HARQ-ACK, and sends a HARQ-ACK.
  • the HARQ-ACK transmission mode includes at least one of the following: a normal transmission mode; a repeated transmission mode; and a retransmission mode.
  • the determining a transmission mode of the HARQ-ACK includes but is not limited to the following manners:
  • the default mode is agreed with the base station to support the retransmission mode
  • the transmission mode of the HARQ-ACK is determined according to the high layer signaling.
  • the method includes, but is not limited to, one of the following manners:
  • the terminal determines that the HARQ-ACK transmission mode is to support the retransmission mode
  • the terminal determines that the HARQ-ACK transmission mode is a repeated transmission mode
  • the terminal determines that the HARQ-ACK transmission mode is a repeated combined retransmission mode
  • the terminal determines that the HARQ-ACK transmission mode is a normal transmission mode.
  • the “support retransmission mode” may be a newly added configuration parameter
  • the “repeated transmission mode” may be a newly added configuration parameter or an existing configuration parameter.
  • the terminal may repeatedly send the HARQ-ACK by using a high-level configured resource on consecutive uplink subframes, where the consecutive uplink subframes The number of frames is configured by the upper layer.
  • the terminal may receive downlink control information that is sent by the base station to indicate that the terminal performs HARQ-ACK retransmission, and the terminal may be configured according to the Downlink control information to determine whether to perform HARQ-ACK retransmission.
  • the terminal receives downlink control information that is sent by the base station and indicates that the terminal performs HARQ-ACK retransmission, including but not limited to the following manners:
  • the terminal receives downlink control information that is sent on the PHICH, where resources of the PHICH are determined according to resources that carry the HARQ-ACK; and/or,
  • the terminal receives a DCI transmitted on a PDCCH or an EPDCCH.
  • the terminal when the terminal receives the NACK on the PHICH, the terminal performs HARQ-ACK retransmission.
  • the terminal when the preset control domain in the DCI received by the terminal is a preset specific state, the terminal performs HARQ-ACK retransmission.
  • the DCI includes at least one of the following: in addition to the preset control domain for indicating HARQ-ACK retransmission:
  • the terminal uses a proprietary RNTI to descramble the DCI, and obtains HARQ-ACK retransmission information related to the terminal according to the index information of the high layer configuration.
  • the terminal when the downlink control information indicates that the terminal is to perform HARQ-ACK retransmission, the terminal performs HARQ-ACK retransmission on the third preset uplink subframe.
  • the terminal when the HARQ-ACK transmission mode is determined to support the retransmission mode, the terminal does not receive the downlink retransmission data packet corresponding to the HARQ-ACK sent by the base station before the second preset subframe. Or a new data packet, and the terminal sends a HARQ-ACK retransmission in the third preset uplink subframe when the HARQ-ACK sent by the terminal includes a NACK.
  • the terminal performs HARQ-ACK retransmission on the third preset uplink subframe, including at least one of the following:
  • the terminal performs HARQ-ACK retransmission on the third preset subframe by using a preset PUCCH resource, where the third preset uplink subframe is an uplink subframe determined according to the downlink control information, Or the uplink subframe that is agreed with the base station, where the preset PUCCH resource is a PUCCH resource determined according to the downlink control information, or a PUCCH resource configured by a higher layer; and/or
  • the terminal When the terminal has PUSCH transmission on the third preset subframe, and the terminal is configured to not allow PUCCH and PUSCH to transmit simultaneously, the terminal is on the PUSCH in the third preset subframe. Perform HARQ-ACK retransmission.
  • the terminal when the HARQ-ACK transmission mode is determined to be a repeated combined retransmission transmission mode, the terminal repeatedly transmits the HARQ-ACK by using a high-level configuration resource on consecutive uplink subframes, where The number of consecutive uplink subframes is configured by the upper layer; then, the subsequent processing is performed in the retransmission mode according to the HARQ-ACK transmission mode, and the terminal performs the repeated transmission processing when the HARQ-ACK is to be transmitted.
  • the terminal when the HARQ-ACK transmission mode is determined as the combined mode of supporting the retransmission mode and the repeated transmission mode, the terminal retransmits each HARQ-ACK according to an agreement with the base station.
  • the number of repeated transmissions is incremented relative to the number of repeated HARQ-ACK transmissions.
  • the terminal increases the number of times of repeated transmission with respect to the previous transmission number when performing HARQ-ACK retransmission according to the agreement with the base station.
  • the terminal determines the number of HARQ-ACK bits that need to be fed back and the HARQ-ACK bit sequence that is fed back.
  • the terminal determines, according to the DAI sent by the base station, the number of HARQ-ACK bits that need to be fed back and the HARQ-ACK bit sequence that is fed back.
  • the DAI information is a newly added control domain or an existing control domain in the DCI, and the DAI information is different in meanings represented by different DCIs, where the different DCIs refer to different serving cells or sub- The DCI of the frame.
  • the terminal agrees that the DAI in the DCI of the first Nm serving cells in the N scheduled serving cells is in a certain order, and the number of serving cells that have been scheduled by the current serving cell is scheduled.
  • the DAI in the DCI of the last m serving cells of the N serving cells indicates the total number of serving cells scheduled in the current subframe; or, in the DCI of the Nm serving cells in which the DAI of the last m serving cells is repeatedly scheduled.
  • DAI; or, the DAI in the DCI of the last m serving cells and the DAI of the DCI of the scheduled Nm serving cells have preset offset values and are the same, where N and m are positive integers, and m is The base station and the terminal agree on a good value.
  • FIG. 8 is a schematic structural diagram of a candidate new PUCCH format according to an alternative embodiment of the present invention.
  • the new PUCCH format can support more HARQ-ACK feedback, such as the PUCCH shown in FIG. 8.
  • the format considering the use of QPSK modulation, and ensuring that the channel coding rate is less than or equal to 0.5, can support up to 144 bits of feedback.
  • the existing PUCCH format does not support CRC.
  • the existing PUCCH format can only support up to 22 bits of feedback. If the CRC is added, the number of useful HARQ-ACK bits that can be supported becomes smaller, and the CRC accounts for the overhead ratio. Too large, therefore, the existing PUCCH format does not support CRC.
  • the base station side can use the CRC to find out whether the HARQ-ACK transmission is incorrect.
  • the robustness of the HARQ-ACK is better.
  • the CRC can only find errors, it is not possible to determine which bits have errors. Therefore, in order to ensure reliable transmission of the system, in order to ensure reliable transmission of the system, all PDSCHs corresponding to the HARQ-ACK are detected from the base station. The transmission needs to be retransmitted, so that it is a waste of resources for the PDSCH that has been correctly transmitted, which leads to unnecessary retransmission of the PDSCH and affects spectrum efficiency.
  • a base station transmits a PDSCH on subframe 0 of a radio frame n
  • the terminal receives the PDSCH on the subframe 0 of the radio frame n, and performs HARQ-ACK feedback on the subframe 4 of the radio frame n according to the detection result; the base station detects the HARQ-ACK on the subframe 4 of the radio frame n, and judges according to the CRC
  • the HARQ-ACK transmission is incorrect. Since the base station cannot determine where the transmitted HARQ-ACK has an error, the base station retransmits all the previous PDSCH transmissions on the subframe 8 of the radio frame n.
  • the terminal's HARQ-ACK transmission mode includes at least one of the following:
  • the terminal In the normal transmission mode, the terminal only sends the HARQ-ACK once, and the base station determines whether the corresponding PDSCH is to be retransmitted according to the received HARQ-ACK.
  • This is the default HARQ-ACK transmission mode supported by the existing protocol.
  • PUCCH format 1b joint channel selection and PUCCH format 3 all adopt this HARQ-ACK transmission mode by default.
  • the repeating transmission mode when the configuration parameter of "ackNackRepetition" is configured in the high-level parameter of the PUCCH, the repeating transmission mode is enabled, and the high-level parameter "ackNackRepetition” is also configured with the number of times the terminal repeatedly transmits HARQ-ACK "RepetitionFactor", and the repeated transmission.
  • PUCCH channel resources used in HARQ-ACK When the terminal transmits the HARQ-ACK in the repeated transmission mode, the terminal repeatedly transmits the HARQ-ACK on the consecutive uplink subframes, and after receiving the HARQ-ACK of the multiple uplink subframes, the base station determines the retransmission of the PDSCH.
  • the high-level configuration IE In the existing protocol, it is used for PUCCH format 1a/1b. In the enhanced carrier aggregation system, for the newly added PUCCH format, this IE may be considered to configure the repeated transmission mode of the new PUCCH format, or may be added. The configuration parameters are used to configure the repeating transmission mode of the new PUCCH format.
  • the retransmission mode is supported: the terminal does not receive the downlink retransmission corresponding to the first transmitted HARQ-ACK after receiving the corresponding trigger retransmission signaling or before the second preset subframe.
  • the downlink retransmission data packet or the new data packet corresponding to the HARQ-ACK transmitted for the first time may refer to the downlink transmission having the same process number as the first transmission PDSCH.
  • the HARQ-ACK may be sent on the PUCCH or may be sent on the PUSCH, specifically:
  • the terminal When the terminal does not transmit PUSCH on the third preset uplink subframe, or the terminal has PUSCH transmission on the third preset subframe, and the terminal is configured to allow PUCCH and PUSCH to transmit simultaneously, The terminal performs HARQ-ACK retransmission on the third preset subframe by using a preset PUCCH resource, where the third preset uplink subframe may be an uplink subframe determined according to the downlink control information. Or the uplink subframe that is agreed with the terminal, where the preset PUCCH resource may be a PUCCH resource determined according to the downlink control information, or a PUCCH resource configured by a higher layer;
  • the terminal When the terminal has PUSCH transmission on the third preset subframe and the terminal is configured to not allow PUCCH and PUSCH to transmit simultaneously, the terminal may be in the PUSCH on the third preset subframe. Perform HARQ-ACK retransmission on it.
  • the terminal repeatedly transmits the HARQ-ACK by using a resource configured by a higher layer on consecutive uplink subframes, where the consecutive uplink subframes are configured by a higher layer; and then, according to the HARQ-ACK
  • the transmission mode is a retransmission mode for subsequent processing, and when the terminal sends a HARQ-ACK, the transmission process is repeated.
  • the base station configures a HARQ-ACK transmission mode of the terminal, where the transmission mode includes one of the following three types:
  • the base station configures the HARQ-ACK transmission mode of the terminal, and may adopt one of the following methods:
  • the default mode is agreed with the base station to support the retransmission mode
  • the transmission mode of the HARQ-ACK is determined according to the high layer signaling.
  • the processing of the terminal may include, but is not limited to, one of the following manners:
  • the terminal determines that the HARQ-ACK transmission mode is to support the retransmission mode
  • the terminal determines that the HARQ-ACK transmission mode is a repeated transmission mode
  • the terminal determines that the HARQ-ACK transmission mode is a repeated combined retransmission mode
  • the terminal determines that the HARQ-ACK transmission mode is a normal transmission mode.
  • the “support retransmission mode” may be a newly added configuration parameter
  • the “repeated transmission mode” may be an existing configuration parameter or a newly added configuration parameter.
  • the base station may only agree with the terminal supporting the new PUCCH format that the transmission mode of the HARQ-ACK is to support the retransmission mode.
  • the transmission mode of the HARQ-ACK may default to support the retransmission mode.
  • the terminal After transmitting the HARQ-ACK for the first time, the terminal does not receive the downlink retransmission data packet or the new data packet corresponding to the first transmitted HARQ-ACK before the second preset subframe and the terminal
  • the terminal may be in the third preset uplink.
  • the HARQ-ACK is retransmitted on the frame.
  • the base station can also configure the HARQ-ACK transmission mode to one of the foregoing three transmission modes by using the high layer signaling.
  • the HARQ-ACK transmission mode of the terminal can be configured by using 2-bit high-layer signaling.
  • the base station may add a configuration parameter for supporting the HARQ-ACK retransmission in the higher layer signaling parameter PUCCH-Config, and configure some related parameters when the HARQ-ACK retransmission is supported to the terminal. After the base station configures this IE in the PUCCH-config, the UE enters the HARQ-ACK to support the retransmission mode.
  • the HARQ-ACK retransmission mode may be used only for the scenario where the CRC is added when the HARQ-ACK is transmitted. For example, when the HARQ-ACK is greater than 22 bits, for other cases, since the HARQ-ACK has no CRC, the base station side cannot determine. Whether the HARQ-ACK transmission is incorrect or not is not applicable.
  • the base station After the base station configures the HARQ-ACK transmission mode of the terminal to support the retransmission mode, the base station performs reception detection on the HARQ-ACK. When the CRC of the HARQ-ACK fails, the base station determines that the HARQ-ACK transmission error occurs. The terminal can be notified to perform HARQ-ACK retransmission by sending downlink control information.
  • the base station notifies the terminal to perform HARQ-ACK retransmission by sending downlink control information, and may adopt one of the following methods:
  • the base station instructs the terminal to perform HARQ-ACK retransmission by using a NACK on the PHICH;
  • the base station instructs the terminal to perform HARQ-ACK retransmission through the DCI transmitted on the PDCCH or the EPDCCH.
  • the resource used by the base station when transmitting the PHICH may be determined according to the PUCCH resource that transmits the HARQ-ACK.
  • the PUCCH resource may include a PRB (Physical Resource Block) index and a DMRS (Demodulation Reference Signal).
  • the CS Cyclic shift
  • the base station sends the PHICH resource used when triggering the HARQ-ACK retransmission, and can be determined according to the foregoing PRB index and the CS index of the DMRS.
  • the base station uses the DCI transmitted on the PDCCH or the EPDCCH to instruct the terminal to perform HARQ-ACK retransmission, one of the following methods may be adopted:
  • Mode 1 The base station indicates by using a specific state of an existing control domain of the existing DCI, where the specific state of the existing control domain of the DCI is a state in which the existing protocol is not used;
  • Mode 2 The base station scrambles the DCI of the existing size by using a dedicated RNTI, where the dedicated RNTI is used to indicate that the DCI scrambled by the RNTI is a DCI indicating that the terminal performs HARQ-ACK retransmission.
  • the base station can trigger HARQ-ACK retransmission by DCI format 0/4.
  • the DCI may trigger the terminal to perform HARQ-ACK retransmission, and may also indicate the PUCCH resource used in the retransmission.
  • one of the methods adopted by the existing protocol is to combine the dynamic indication of the DCI through the high-level configuration, that is, to configure multiple PUCCH resources through the upper layer, and then dynamically indicate which one to use in the DCI, specifically, It is dynamically indicated by TPC (Transmit Power Control) in the DCI.
  • TPC Transmit Power Control
  • the TPC in the DCI can be used without transmission power adjustment.
  • the foregoing resource indication method may be used, and the base station may configure multiple new PUCCH resources for the terminal through the high layer signaling, and then may indicate the resources used in the retransmission through the preset control domain in the DCI.
  • the preset control domain is optionally a TPC control domain.
  • the PUCCH resource may be determined according to the TPC control domain in the DCI related to the downlink transmission, and for the HARQ-ACK retransmission, the DCI triggered by the HARQ-ACK retransmission is related to the uplink transmission.
  • DCI DCI format 0/4 is DCI related to uplink transmission
  • the control information contained in DCI is not necessary for HARQ-ACK retransmission, such as UL index (index) / DL DAI, this time.
  • These control domains can be reused as the PUCCH resource indication field in the HARQ-ACK retransmission, and the TPC control domain can retain its original role and be used as an adjustment of the transmission power. In this way, the base station has little effect on the standardization as long as the terminal agrees that one or some specific states in the resource allocation control domain are used to indicate that the HARQ-ACK retransmission is triggered.
  • a domain can include at least one of the following:
  • the base station when the terminal is configured to support the HARQ-ACK retransmission mode, the base station also configures the terminal with the RNTI dedicated to the HARQ-ACK retransmission mode, and the RNTI is different from the existing RNTI configured for the terminal.
  • the base station scrambles the DCI by using the RNTI, and then sends the signal to the terminal, and the terminal performs descrambling on the DCI by using the RNTI to obtain information about whether to perform HARQ-ACK retransmission, so as to determine whether the HARQ- ACK is retransmitted.
  • the size of the DCI may be the same as the existing DCI size.
  • the DCI carrying the triggered HARQ-ACK retransmission can adopt the smallest size in the existing DCI format, such as DCI format 1C.
  • the DCI may carry PUCCH channel resource indication information, such as a 1-bit HARQ-ACK retransmission indication and a 2-bit PUCCH channel resource indication, in addition to the indication information that triggers the HARQ-ACK retransmission.
  • PUCCH channel resource indication information such as a 1-bit HARQ-ACK retransmission indication and a 2-bit PUCCH channel resource indication, in addition to the indication information that triggers the HARQ-ACK retransmission.
  • the HARQ-ACK retransmission indication information of the multiple terminals can be multiplexed and transmitted on one DCI format 1C, and multiple terminals are transmitted.
  • FIG. 10 is a schematic diagram of a DCI design according to an alternative embodiment of the present invention.
  • FIG. 11 is a schematic diagram showing an example of PDSCH retransmission according to an alternative embodiment of the present invention. As shown in FIG. 11, an example of PDSCH transmission and HARQ-ACK transmission with PDSCH retransmission after HARQ-ACK retransmission is supported. In this example,
  • the base station transmits the PDSCH on the subframe 0 of the radio frame n;
  • the terminal receives the PDSCH on subframe 0 of the radio frame, and according to the detection result in the radio frame n Performing HARQ-ACK feedback on subframe 4;
  • the base station detects the HARQ-ACK on the subframe 4 of the radio frame n, and determines that the HARQ-ACK transmission is incorrect according to the CRC. Since the base station is configured to support the HARQ-ACK retransmission mode, the base station is in the subframe 8 of the radio frame n.
  • the downlink control information that triggers the HARQ-ACK retransmission is sent, where the downlink control information is one of the modes described in the embodiment;
  • the terminal After receiving the downlink control information of the HARQ-ACK retransmission sent by the base station on the subframe 8 of the radio frame n, the terminal determines that the HARQ-ACK retransmission needs to be performed, and the terminal will be in the subframe of the radio frame n+1. 2 retransmitting the last HARQ-ACK sent;
  • the base station receives the HARQ-ACK retransmission of the terminal in the radio frame n+1 subframe 2, and the base station can also jointly initiate the initial transmission and retransmission of the HARQ-ACK, and after the joint detection, judges that the CRC passes, and the base station acquires the PDSCH transmission.
  • the HARQ-ACK feedback may be performed on the subframe 6 of the radio frame n+1 to retransmit the PDSCH whose HARQ-ACK is fed back to the NACK.
  • this scheme can avoid unnecessary PDSCH retransmission, save resources, and improve spectrum efficiency.
  • This kind of scheme is especially suitable for services that are not sensitive to delay.
  • the subframe in which the base station sends the downlink control information for triggering the HARQ-ACK retransmission is not limited to the subframe 8 of the radio frame n, in the sub-frame.
  • the frame 8 and the subsequent subframes may be, and correspondingly, the subframe in which the terminal performs HARQ-ACK retransmission may be determined according to the subframe in which the downlink control information of the base station triggering the HARQ-ACK retransmission is determined, and the base station is triggered to trigger the HARQ-ACK.
  • the subframe of the retransmitted downlink control information is x, and the subframe in which the terminal performs HARQ-ACK retransmission may be x+K1, where the K is a good value of the base station and the terminal, and K1 optionally takes 4.
  • the subframe in which the base station performs PDSCH retransmission is not limited to the subframe 6 of the radio frame n+1, and may be transmitted on the K2 subframes after the terminal transmits the HARQ-ACK subframe.
  • K2 optionally takes 4.
  • the base station When the base station configures the HARQ-ACK transmission mode of the terminal to support the retransmission mode, the base station performs reception detection on the HARQ-ACK sent by the terminal in the first preset subframe, and when the CRC of the HARQ-ACK fails, the base station determines the HARQ. An error occurs in the ACK transmission. At this time, the base station does not send the downlink retransmission data packet or the new data packet corresponding to the HARQ-ACK before the second preset subframe.
  • the first scenario is that the PDSCH received by the terminal is all correct, and the base station also correctly receives the HARQ-ACK sent by the terminal, and the base station does not re-use the data of the terminal, therefore, the base station does not send any signal to the terminal again. For this case, if the last HARQ-ACK sent by the terminal does not include a NACK, the terminal does not need to perform any operations;
  • the second scenario is that the PDSCH received by the terminal is incorrect, that is, the last HARQ-ACK sent includes the NACK, and the terminal is waiting for the base station to perform the PDSCH retransmission, and the terminal does not receive the second preset subframe.
  • the terminal knows that the base station side determines that the received HARQ-ACK transmission is incorrect according to the convention. Therefore, the terminal may repeatedly send the third preset subframe according to the convention.
  • the HARQ-ACK; the base station may receive the HARQ-ACK retransmission information sent by the terminal on the third preset subframe; wherein the interval between the third subframe and the first subframe may be agreed by the base station and the terminal,
  • the value is 8 (subframes), and the second preset subframe is optionally taken as the previous subframe of the third preset subframe.
  • FIG. 12 is a diagram showing an example of an appointment retransmission mode without transmitting a new packet or a retransmission packet, as shown in FIG. 12, in this example, in accordance with an alternative embodiment of the present invention:
  • the base station transmits the PDSCH on the subframe 0 of the radio frame n;
  • the terminal receives the PDSCH of the subframe 0 of the radio frame n, and transmits the HARQ-ACK corresponding to the PDSCH on the subframe 4 of the radio frame n;
  • the base station receives the HARQ-ACK transmitted by the terminal on the subframe 4 of the radio frame n, assuming that the detection result CRC is incorrect, the base station determines that the HARQ-ACK transmission is incorrect; the base station is in the subframe 8 of the radio frame n to the radio frame.
  • the downlink retransmission data packet or the new data packet corresponding to the HARQ-ACK is not transmitted on the subframe 1 of n+1; it is assumed here that the second preset subframe is the subframe #1 of the radio frame n+1.
  • the terminal is not receiving the downlink retransmission data packet or the new data packet corresponding to the HARQ-ACK sent by the base station in the subframe 8 of the radio frame n to the subframe 1 of the radio frame n+1. Retransmitting the HARQ-ACK on subframe 2 of the radio frame n+1;
  • the base station receives the HARQ-ACK retransmission of the terminal on the radio frame n+1 subframe 2, and the base station can also jointly initiate the initial transmission and retransmission of the HARQ-ACK, and after the joint detection, judges that the CRC passes, and the base is determined.
  • the station acquires the HARQ-ACK feedback of the PDSCH transmission, and retransmits the PDSCH whose HARQ-ACK is fed back to the NACK in the subframe 6 of the radio frame n+1.
  • the base station and the terminal agree that after the first HARQ-ACK is sent, if the terminal does not receive the downlink retransmission data corresponding to the first HARQ-ACK sent by the base station within the preset time period. For a packet or a new data packet, the terminal performs HARQ-ACK retransmission on the preset subframe.
  • the 8 microseconds (8 subframes) after the first HARQ-ACK is sent does not receive the downlink retransmission data packet or the new data packet corresponding to the first HARQ-ACK, and the terminal can
  • the HARQ-ACK is repeatedly transmitted after the 8 subframes, where the downlink retransmission data packet or the new data packet corresponding to the first transmission HARQ-ACK may refer to the downlink transmission having the same process number as the first transmission PDSCH.
  • the base station does not receive the HARQ-ACK retransmission information sent by the terminal on the third preset subframe, it indicates that the terminal correctly receives the PDSCH, but an error occurs during the HARQ-ACK transmission, so the base station It can be considered that the last PDSCH terminal reception is correct and a new data packet transmission can be started.
  • FIG. 13 is a schematic diagram showing an example of a processing procedure of a terminal base station when a base station configures a HARQ-ACK transmission mode of a terminal to be in a repeated combined retransmission mode according to an alternative embodiment of the present invention, as shown in FIG. 13, in the example:
  • the base station transmits the PDSCH on the subframe 0 of the radio frame n;
  • the terminal receives the PDSCH of the subframe 0 of the radio frame n, and transmits the HARQ-ACK corresponding to the PDSCH on the subframe 4 of the radio frame n; the HARQ-ACK repeat transmission mode is enabled, and the repetition factor is assumed to be 2 , the terminal repeatedly transmits the HARQ-ACK sent by the subframe 4 on the subframe 5 of the radio frame n;
  • the base station receives the HARQ-ACK sent by the terminal on the subframe 4 and the subframe 5 of the radio frame n, and if the detection result CRC is incorrect, the base station determines that the HARQ-ACK transmission is incorrect; since the base station is configured to support the HARQ-ACK The retransmission mode, the base station sends the downlink control information for triggering the HARQ-ACK retransmission on the subframe 9 of the radio frame n, wherein the downlink control information is one of the modes described in Embodiment 4;
  • the terminal After receiving the downlink control information of the HARQ-ACK retransmission transmitted by the terminal on the subframe 9 of the radio frame n, determining that the HARQ-ACK retransmission needs to be performed, the terminal will be in the subframe of the radio frame n+1. 3, retransmitting the last transmitted HARQ-ACK; meanwhile, since the terminal's HARQ-ACK repeat transmission mode is also enabled, the terminal repeatedly transmits the subframe 3 transmission on the subframe 4 of the radio frame n+1.
  • HARQ-ACK
  • the base station receives the HARQ-ACK retransmission of the terminal in the radio frame n+1 subframe 3 and the subframe 4, and the base station can also cooperate with the initial transmission and retransmission of the HARQ-ACK, and after the joint detection, judges that the CRC passes, and the base station at this time
  • the HARQ-ACK feedback of the PDSCH transmission is obtained, and the PDSCH with the HARQ-ACK feedback NACK is retransmitted on the subframe 8 of the radio frame n+1.
  • FIG. 14 is another schematic diagram of a process performed by a base station when a base station configures a HARQ-ACK transmission mode of a terminal to be in a repeated combined retransmission mode according to an alternative embodiment of the present invention, and FIG. 14 shows a base station configuration.
  • An example of the processing procedure of the terminal base station when the HARQ-ACK transmission mode of the terminal is the repeated combined retransmission mode.
  • the HARQ-ACK retransmission is the number of repeated transmissions compared to the previous HARQ-ACK repeated transmission times. Increment, the number of increments that can be selected here is 1:
  • the base station transmits the PDSCH on the subframe 0 of the radio frame n;
  • the terminal receives the PDSCH of the subframe 0 of the radio frame n, and transmits the HARQ-ACK corresponding to the PDSCH on the subframe 4 of the radio frame n; the HARQ-ACK repeat transmission mode is enabled, and the repetition factor is assumed to be 2 , the terminal repeatedly transmits the HARQ-ACK sent by the subframe 4 on the subframe 5 of the radio frame n;
  • the base station receives the HARQ-ACK sent by the terminal on the subframe 4 and the subframe 5 of the radio frame n, and assumes that the CRC of the detection result is incorrect, the base station determines that the HARQ-ACK transmission is incorrect; and the base station is configured to support the HARQ-ACK.
  • the base station sends the downlink control information that triggers the HARQ-ACK retransmission on the subframe 9 of the radio frame n, where the downlink control information is one of the modes described in Embodiment 4;
  • the terminal After receiving the downlink control information of the HARQ-ACK retransmission transmitted by the base station on the subframe 9 of the radio frame n, the terminal determines that HARQ-ACK retransmission needs to be performed, and the terminal will be in the radio frame n+1.
  • the HARQ-ACK transmitted last time is retransmitted; at the same time, the HARQ-ACK repeat transmission mode of the terminal is also enabled, and the terminal and the base station agree that each HARQ-ACK retransmission, HARQ-
  • the number of times the ACK is repeatedly transmitted is increased by one time compared to the previous repeated transmission. Therefore, the terminal repeatedly transmits the HARQ-ACK transmitted in the subframe 3 on the subframe 4 and the subframe 5 of the radio frame n+1;
  • the base station receives the HARQ-ACK retransmission of the terminal in the radio frame n+1 subframes 3, 4, and 5, and the base station can also perform the initial transmission and retransmission of the HARQ-ACK, and after the joint detection, judges that the CRC passes.
  • the base station acquires the HARQ-ACK feedback of the PDSCH transmission, and retransmits the PDSCH whose HARQ-ACK is fed back to the NACK in the subframe 9 of the radio frame n+1.
  • a method for determining the number of the HARQ-ACK bits and the bit sequence is determined based on the configured number of serving cells and the transmission mode. For the TDD system, the downlink subframe to be fed back in an uplink subframe needs to be determined according to the configured downlink reference configuration. number. The method for determining the number of HARQ-ACK feedback bits according to the configured number of serving cells, the number of subframes, and the transmission mode, when the number of configured serving cells/subframes is relatively large, and the number of actually scheduled serving cells/subframes is relatively compared.
  • an improved solution is to determine the number of HARQ-ACK bits to be fed back and the HARQ-ACK bit sequence according to the number of reserved serving cells/subframes.
  • the number of HARQ-ACK bits and the HARQ-ACK bit sequence to be fed back according to the number of reserved serving cells/subframes to avoid the base station and the terminal have different understandings of the transmitted HARQ-ACK, it is necessary to introduce a corresponding mechanism. Solve the problem that the terminal base station understands inconsistency due to terminal missed detection.
  • the base station may carry downlink allocation index (DAI) information in the DCI related to the PDSCH transmission, and is used to indicate the scheduling situation of the terminal regarding the downlink PDSCH.
  • DAI downlink allocation index
  • the base station and the terminal agree that the DAI is in different DCIs.
  • the meanings indicated are different, wherein the different DCI refers to the DCI of different serving cells or subframes.
  • the base station may indicate the number of serving cells that have been scheduled by the current serving cell in a certain order by the DAI in the DCI of the preceding N-m serving cells in the scheduled N serving cells (tired DAI), the DAI in the DCI of the last m serving cells of the scheduled N serving cells indicates the total number of serving cells scheduled for the current subframe (total DAI); or
  • the DAI in the DCI of the N-mth serving cell in which the DAI in the last m serving cells is repeatedly scheduled or
  • the DAI in the DCI of the last m serving cells and the DAI of the DCI of the scheduled Nm serving cells have preset offset values and are the same, where N and m are positive integers, and m is a good agreement between the base station and the terminal. The value.
  • the value of m can be determined according to the number of bits in the DAI control field. If the DAI is 2 bits, the value of m is optionally 4. The reason for this is that it is assumed that the loss of 4 PDSCHs or (ES) PDCCHs released by SPS (sequi-static scheduling, SPS) is not considered continuously (in a certain order), so that the terminal can also recognize Out of the loss.
  • the DAI in the DCI of the current Nm serving cells indicates the number of serving cells that have been scheduled by the current serving cell in a certain order (accumulated value DAI), and the DCI of the last m serving cells.
  • the DAI in the current subframe indicates the total number of serving cells (total DAI) scheduled in the current subframe
  • the value of DAI as shown in Table 3 can be obtained.
  • FIG. 16 when the terminal is at the last 5 (m+1, where m is equal to 4) When no loss occurs, the values of the last 5 received DAIs are the same, so you can judge whether the last 5 are based on this.
  • the terminal needs to put the last 5 when feeding back HARQ-ACK.
  • the state corresponding to the HARQ-ACK bits is set to NACK. If the terminal receives the last five identical DAIs, it indicates that the last five are not lost, and the terminal may determine the ACK/NACK state corresponding to the last five HARQ-ACK bits according to the detection result. For the status of other HARQ-ACK bits, the corresponding ACK/NACK status may be determined according to the accumulated counter and the detection result of the PDSCH.
  • FIG. 15 is a first schematic diagram of a DAI according to an alternative embodiment of the present invention, as shown in FIG. 15, in which a base station is assumed to have 32 serving cells configured for a terminal, and 29 services are scheduled on a subframe n.
  • the cell, scheduling situation is shown in Figure 15.
  • the terminal when the terminal receives the PDSCH transmitted on all the scheduled 29 serving cells or the (E)PDCCH indicating the SPS release, the terminal may indicate according to the last 5 consecutive "00" received.
  • the total number of DAIs, 4 of which are DAIs representing the total number, and the fifth last is the accumulated DAI.
  • the terminal can determine the need for feedback according to the above receiving situation.
  • the HARQ-ACK bit number is 29, and the terminal may determine the ACK/NACK state of the corresponding HARQ-ACK bit according to the DAI accumulated by the previous indication.
  • the (E)PDCCH released by the SPS determines the corresponding ACK/NACK state.
  • FIG. 16 is a second schematic diagram of a DAI according to an alternative embodiment of the present invention
  • FIG. 17 is a third schematic diagram of a DAI according to an alternative embodiment of the present invention, as shown in FIG. 16 and FIG.
  • the DAI can determine that the number of HARQ-ACK bits that need to be fed back is 29.
  • the terminal can determine the ACK/NACK status of the corresponding HARQ-ACK bit according to the previous accumulated counter, and can be set to the last five HARQ-ACK states. NACK.
  • the process of determining, by the DAI, the corresponding HARQ-ACK bit number and the bit sequence according to the DAI may include:
  • the terminal determines that this is the first PDSCH with the corresponding (E)PDCCH or the (E)PDCCH indicating the SPS release, which is scheduled by the base station.
  • the ACK/NACK state of the PDSCH demodulation is placed in the first bit of the HARQ-ACK bit sequence, and if the (E)PDCCH indicating the SPS release is received, the first position of the bit sequence is “ACK”;
  • the terminal determines that this is the second PDSCH with the corresponding (E)PDCCH or the (E)PDCCH indicating the SPS release, and the The ACK/NACK state of the PDSCH demodulation is placed in the second bit of the HARQ-ACK bit sequence, and if the (E)PDCCH indicating the SPS release is received, the second position of the bit sequence is “ACK”;
  • the terminal determines that this is the third PDSCH with the corresponding (E)PDCCH or the (E)PDCCH indicating the SPS release, and the The ACK/NACK state of the PDSCH demodulation is placed in the third bit of the HARQ-ACK bit sequence, and if the (E)PDCCH indicating the SPS release is received, the third position of the bit sequence is “ACK”;
  • the terminal determines that this is the fourth PDSCH with the corresponding (E)PDCCH or the (E)PDCCH indicating the SPS release, which is scheduled by the base station.
  • the ACK/NACK state of the PDSCH demodulation is placed in the fourth bit of the HARQ-ACK bit sequence, and if the (E)PDCCH indicating the SPS release is received, the fourth position of the bit sequence is “ACK”;
  • the terminal determines that the fifth PDSCH with the corresponding (E)PDCCH or the (E)PDCCH indicating the SPS release is scheduled by the base station, and the The ACK/NACK state of the PDSCH demodulation is placed in the fifth bit of the HARQ-ACK bit sequence, and if the (E)PDCCH indicating the SPS release is received, the fifth position of the bit sequence is "ACK";
  • the terminal determines that this is the sixth PDSCH with the corresponding (E)PDCCH or the (E)PDCCH indicating the SPS release, and the The ACK/NACK state of the PDSCH demodulation is placed in the sixth bit of the HARQ-ACK bit sequence, and if the (E)PDCCH indicating the SPS release is received, the sixth position of the bit sequence is “ACK”;
  • the terminal determines that this is the seventh PDSCH with the corresponding (E)PDCCH or the (E)PDCCH indicating the SPS release, and the The ACK/NACK state of the PDSCH demodulation is placed in the seventh bit of the HARQ-ACK bit sequence, and if the (E)PDCCH indicating the SPS release is received, the seventh position of the bit sequence is "ACK";
  • the terminal determines that this is the eighth PDSCH with the corresponding (E)PDCCH or the (E)PDCCH indicating the SPS release, which is scheduled by the base station.
  • the ACK/NACK state of the PDSCH demodulation is placed in the eighth bit of the HARQ-ACK bit sequence, and if the (E)PDCCH indicating the SPS release is received, the eighth position of the bit sequence is "ACK";
  • the values of the last five DAIs received are all "00", and according to the previous reception situation, it can be determined that the fifth last DAI indicates that the DAI has been scheduled.
  • the ACK/NACK state corresponding to the PDSCH of the SPS serving cell may be mapped to the last of the HARQ-ACK bit sequence according to the carrier index sequence for the serving cell that sends the SPS.
  • a schematic diagram is shown in FIG. 18, in which the received PDSCH is correctly demodulated, so the HARQ-ACK status is ACK, which is represented by "A” in the figure, and for the missed service cell, The figure is represented by "X”, The corresponding HARQ-ACK state is set to NACK, which is represented by "N” in the figure.
  • the terminal judges that the last five have corresponding (E)
  • the PDSCH corresponding to the PDCCH or the PDCCH indicating the release of the SPS is not lost, and thus the corresponding HARQ-ACK state can be determined according to the demodulation result of the PDSCH, and it is assumed here that the PDSCH is demodulated correctly. If the receiving situation is as shown in FIG.
  • the terminal only receives 4 identical DAIs at the end, the terminal may determine that the last 5 PDSCHs corresponding to the corresponding (E) PDCCH or the PDCCH indicating the SPS release are lost, but I don't know which one is lost, so the terminal can set the last 5 (without considering SPS) HARQ-ACK status to NACK. If the current subframe has a serving cell that transmits the SPS, the process can be as previously described.
  • the DAI in the DCI of the current Nm serving cells indicates the number of serving cells that have been scheduled by the current serving cell in a certain order (accumulated value DAI), and the DCI of the last m serving cells.
  • DAI accumulated value
  • the value of the DAI is the same, so you can judge whether the last 4 are lost according to this: as long as the last received 4 identical DAI values are not found, you can judge that there are losses in the last 4, but the terminal cannot determine Which is the reason, therefore, when the terminal feeds back the HARQ-ACK, the state corresponding to the last four HARQ-ACK bits needs to be set to NACK. If the last 4 identical DAIs are received, it means that the last 4 are not lost, and the ACK/NACK state corresponding to the last 4 HARQ-ACK bits may be determined according to the detection result. For the status of other HARQ-ACK bits, the corresponding ACK/NACK status may be determined according to the accumulated counter and the detection result of the PDSCH.
  • the determining, by the terminal, the number of the HARQ-ACK bits according to the DAI may include: determining the number of HARQ-ACK bits to be fed back according to the previously received scheduling situation and the value of the consecutively received consecutive DAIs, as shown in FIG. 20, The value of the last four identical DAIs received is “00”. It is judged that the 25 have been scheduled by looking up Table 2, and then the terminal judges that the DAI of the last three serving cells is the same as the previous one.
  • the terminal determines that the last four PDSCHs corresponding to the (E)PDCCH or the PDCCHs that indicate the SPS release are not lost, and thus the corresponding HARQ-ACK state can be determined according to the pair.
  • the demodulation result of the PDSCH is determined, and it is assumed here that the PDSCH is demodulated correctly. If the receiving situation is as shown in FIG.
  • the terminal finally receives only three identical DAIs, the terminal may determine that the last four PDSCHs corresponding to the corresponding (E)PDCCH or the PDCCH indicating the SPS release are lost, but I don't know which one is lost, so the terminal can set the last 4 (regardless of SPS) HARQ-ACK status to NACK. If the current subframe has a serving cell that transmits the SPS, the process can be as previously described.
  • the method according to the above embodiments can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware.
  • the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product stored in a storage medium (such as ROM/RAM, disk).
  • the optical disc includes a plurality of instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method described in the embodiments of the present invention.
  • modules may be implemented by software or hardware.
  • the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the modules are respectively located in multiple processes. In the device.
  • the embodiment of the invention further provides a storage medium.
  • the storage medium may be configured to store program code for performing the method steps of the above embodiments:
  • the foregoing storage medium may include, but not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory.
  • ROM Read-Only Memory
  • RAM Random Access Memory
  • a mobile hard disk e.g., a hard disk
  • magnetic memory e.g., a hard disk
  • the processor may perform the method steps of the foregoing embodiments according to the stored program code in the storage medium.
  • all or part of the steps of the foregoing embodiments may also be implemented by using an integrated circuit, and the steps may be separately fabricated into integrated circuit modules, or multiple modules thereof or The steps are made into a single integrated circuit module.
  • the devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.
  • the device/function module/functional unit in the above embodiment When the device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium.
  • the above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
  • the base station configures a hybrid automatic request retransmission response message HARQ-ACK transmission mode of the terminal, and the base station receives the HARQ-ACK sent by the terminal according to the transmission mode, and solves unnecessary PDSCH retransmission.
  • the problem of wasting downlink resources increases the utilization of downlink resources.

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Abstract

An acknowledgement information transmission method comprises: a base station configures a sending mode for a hybrid automatic repeat request-acknowledgement (HARQ-ACK) of a terminal; and the base station receives an HARQ-ACK that is sent in accordance with the sending mode by the terminal.

Description

应答信息的传输方法、装置、基站及终端Method, device, base station and terminal for transmitting response information 技术领域Technical field
本申请涉及但不限于通信领域，尤其涉及一种应答信息的传输方法、装置、基站及终端。The present application relates to, but is not limited to, the field of communications, and in particular, to a method, an apparatus, a base station and a terminal for transmitting response information.
背景技术Background technique
在混合自动请求重传(Hybrid Automatic Repeat Request，简称为HARQ)方式中，发端发送的码，不仅能够检错，而且还具有一定的纠错能力。接收端译码器收到码字后，首先检验错误情况，如果在码的纠错能力以内，则自动进行纠错，如果错误很多，超过了码的纠错能力，但能检测错误出来，则接收端通过反馈信道给发端发一个判决信号，要求发端重发信息。在正交频分复用(Orthogonal Frequency Division Multiplex，简称为OFDM)***中，通过正确/错误应答(Acknowledgement/Negative-acknowledgement，简称为ACK/NACK)控制信令来表示传输正确/错误，以此来判断是否需要重传，所述的ACK和NACK统称为HARQ-ACK应答信息。In the Hybrid Automatic Repeat Request (HARQ) mode, the code sent by the originator can not only detect errors but also have certain error correction capabilities. After receiving the codeword, the receiver decoder first checks the error condition. If the error correction capability of the code is within, the error correction is automatically performed. If the error is too much, the error correction capability of the code is exceeded, but the error can be detected. The receiving end sends a decision signal to the sending end through the feedback channel, and requests the originating end to resend the information. In an Orthogonal Frequency Division Multiplex (OFDM) system, the Acknowledgement/Negative-acknowledgement (ACK/NACK) control signaling is used to indicate that the transmission is correct/error. To determine whether retransmission is needed, the ACK and NACK are collectively referred to as HARQ-ACK response information.
在长期演进(Long Term Evolution，简称为LTE)***中，对于下行HARQ，终端(User Equipment，简称为UE)可以在物理上行共享信道(Physical Uplink Shared Channel，简称为PUSCH)发送物理下行共享信道(Physical Downlink Shared Channel，简称为PDSCH)的HARQ-ACK应答信息，也可以在物理上行控制信道(Physical Uplink Control Channel，简称为PUCCH)上发送。In a Long Term Evolution (LTE) system, for a downlink HARQ, a User Equipment (UE) can send a physical downlink shared channel (Physical Uplink Shared Channel, PUSCH for short). The HARQ-ACK response information of the Physical Downlink Shared Channel (PDSCH) may also be transmitted on a Physical Uplink Control Channel (PUCCH).
在LTE的最初标准版本(Release)8，只支持一个载波，因此，对于HARQ-ACK应答信息的发送，分别针对FDD(Frequency Division Duplex，简称为频分复用)和TDD(Time Division Duplex，简称为时分复用)***定义了不同的反馈模式。对于FDD***，由于上下行载波是一一对应的，一个上行子帧对应一个下行子帧，LTE定义了PUCCH格式1a/1b来反馈相应的HARQ-ACK应答信息。而对于TDD***，由于上下行子帧配置的不对称，一个上行子帧可能对应一个或多个下行子帧，为此，LTE定义了两种HARQ-ACK反馈模式，HARQ-ACK绑定(bundling)和HARQ-ACK复用 (multiplexing)，与一个或多个下行子帧对应的HARQ-ACK应答信息，经过相应的处理，分别采用PUCCH格式1a/1b和PUCCH格式1b联合信道选择的方式发送。其中，PUCCH格式1b联合信道选择是指，通过选择使用不同的PUCCH信道来携带更多的HARQ-ACK，PUCCH格式1b可以携带2比特的信息，而通过信道选择，比如通过4个不同的PUCCH信道，则可以额外携带2比特的信息，那么PUCCH格式1b联合信道选择就可以最多携带4比特的信息，正好可以与4个HARQ-ACK应答信息对应。In the initial standard version (Release) 8 of LTE, only one carrier is supported. Therefore, for the transmission of HARQ-ACK response information, FDD (Frequency Division Duplex, simply referred to as frequency division multiplexing) and TDD (Time Division Duplex) are respectively referred to. Different feedback modes are defined for the time division multiplexing system. For the FDD system, since the uplink and downlink carriers are one-to-one correspondence, and one uplink subframe corresponds to one downlink subframe, LTE defines the PUCCH format 1a/1b to feed back the corresponding HARQ-ACK response information. For the TDD system, one uplink subframe may correspond to one or more downlink subframes due to the asymmetry of the uplink and downlink subframe configuration. To this end, LTE defines two HARQ-ACK feedback modes, and the HARQ-ACK binding (bundling) ) and HARQ-ACK multiplexing (multiplexing), the HARQ-ACK response information corresponding to one or more downlink subframes is correspondingly processed and transmitted in a PUCCH format 1a/1b and PUCCH format 1b joint channel selection manner. The PUCCH format 1b joint channel selection means that the PUCCH format 1b can carry 2 bits of information by selecting to use different PUCCH channels to carry more HARQ-ACKs, and through channel selection, for example, through 4 different PUCCH channels. Then, the information can be additionally carried by 2 bits, and the PUCCH format 1b joint channel selection can carry up to 4 bits of information, which can correspond to 4 HARQ-ACK response information.
图1是根据相关技术中PUCCH格式1a/1b的结构示意图，图2是根据相关技术中PUCCH格式1b联合信道选择的结构示意图，如图1和图2所示，给出了PUCCH格式1a/1b和PUCCH格式1b联合信道选择的一个结构示意图。1 is a schematic structural diagram of a PUCCH format 1a/1b according to the related art, and FIG. 2 is a schematic structural diagram of a PUCCH format 1b joint channel selection according to the related art. As shown in FIG. 1 and FIG. 2, a PUCCH format 1a/1b is given. A schematic diagram of a joint channel selection with PUCCH format 1b.
在LTE的后续演进中，载波聚合作为一种关键技术被引入，也就是通过把LTE***的带宽进行聚合以获得更大的传输带宽。在LTE Release 10中，最多可以支持5个载波的聚合。由于在Release 8的时候，定义的PUCCH格式1a/1b最多能支持2比特的HARQ-ACK反馈，而PUCCH格式1b联合信道选择也最多支持4比特的HARQ-ACK反馈，因此，在Release 10中，引入了PUCCH格式3来支持最多22比特的反馈，图3是根据相关技术中PUCCH格式3的结构示意图。In the subsequent evolution of LTE, carrier aggregation is introduced as a key technology, that is, by aggregating the bandwidth of the LTE system to obtain a larger transmission bandwidth. In LTE Release 10, aggregation of up to 5 carriers can be supported. Since in Release 8, the defined PUCCH format 1a/1b can support up to 2 bits of HARQ-ACK feedback, and the PUCCH format 1b joint channel selection also supports up to 4 bits of HARQ-ACK feedback. Therefore, in Release 10, The PUCCH format 3 is introduced to support feedback of up to 22 bits, and FIG. 3 is a schematic structural diagram of the PUCCH format 3 according to the related art.
而在LTE的Release 13中，载波聚合技术得到进一步的增强，最多可以支持到32个载波的聚合。随着载波数的增加，需要反馈的HARQ-ACK也随之增加。对于FDD***，最多需要反馈64比特的HARQ-ACK(不做任何绑定操作的前提下)，而对于TDD，即使不考虑上下行配置5(TDD的上下行配置如表1所示)，以及子帧上进行了空间绑定操作，最多也需要反馈128比特的HARQ-ACK。In Release 13 of LTE, the carrier aggregation technology is further enhanced to support aggregation up to 32 carriers. As the number of carriers increases, the HARQ-ACK that requires feedback also increases. For an FDD system, it is necessary to feed back a 64-bit HARQ-ACK (without any binding operation), and for TDD, even if the uplink and downlink configuration 5 is not considered (the uplink and downlink configuration of TDD is as shown in Table 1), and A spatial binding operation is performed on the subframe, and a 128-bit HARQ-ACK is also required to be fed back at most.
表1Table 1
Figure PCTCN2016084162-appb-000001
Figure PCTCN2016084162-appb-000001
Figure PCTCN2016084162-appb-000002
Figure PCTCN2016084162-appb-000002
如上所述，PUCCH格式3最多只能支持22比特的反馈，也就是说用已有的PUCCH格式并不能支持Release 13最多支持32个载波时的HARQ-ACK反馈。在当前的讨论中，一个结论是至少引入一种新的PUCCH格式。另外，当前还有一个会议结论是，为了保证HARQ-ACK的可靠性，当反馈的HARQ-ACK比特数超过22比特时，需要增加循环冗余校验(Cyclic Redundancy Check，简称为CRC)。基站侧根据CRC是否通过，判断传输的HARQ-ACK是否有误。当CRC没有通过时，表示传输的HARQ-ACK有误，但是并不知道哪个HARQ-ACK有误，因此，为了保证下行传输的稳健，基站需要把上一次调度的所有载波/子帧上的PDSCH传输进行重传。这样由于CRC错误，就会导致大量的不必要的PDSCH重传，浪费下行资源，频谱效率受影响。另一方面，在HARQ-ACK反馈时，HARQ-ACK比特数的确定也是一个有待解决的问题。As described above, PUCCH format 3 can only support up to 22 bits of feedback, that is, the existing PUCCH format cannot support HARQ-ACK feedback when Release 13 supports up to 32 carriers. In the current discussion, one conclusion is to introduce at least one new PUCCH format. In addition, there is still a conference conclusion that in order to ensure the reliability of the HARQ-ACK, when the number of HARQ-ACK bits fed back exceeds 22 bits, a Cyclic Redundancy Check (CRC) needs to be added. The base station side determines whether the transmitted HARQ-ACK is incorrect according to whether the CRC passes. When the CRC fails, it indicates that the transmitted HARQ-ACK is incorrect, but does not know which HARQ-ACK is incorrect. Therefore, in order to ensure the robustness of the downlink transmission, the base station needs to put the PDSCH on all carriers/subframes that were last scheduled. The transmission is retransmitted. In this way, due to the CRC error, a large number of unnecessary PDSCH retransmissions are caused, the downlink resources are wasted, and the spectrum efficiency is affected. On the other hand, the determination of the number of HARQ-ACK bits is also a problem to be solved in the HARQ-ACK feedback.
针对相关技术中，不必要的PDSCH重传浪费下行资源的问题，目前还没有有效的解决方案。For the related art, unnecessary PDSCH retransmission wastes downlink resources, and there is no effective solution at present.
发明内容Summary of the invention
以下是对本文详细描述的主题的概述。本概述并非是为了限制权利要求的保护范围。The following is an overview of the topics detailed in this document. This Summary is not intended to limit the scope of the claims.
本文提供了一种应答信息的传输方法、装置、基站及终端，以至少解决相关技术中不必要的PDSCH重传浪费下行资源的问题。 The present invention provides a method, an apparatus, a base station, and a terminal for transmitting response information, so as to at least solve the problem that unnecessary PDSCH retransmission wastes downlink resources in the related art.
本发明实施例提供了一种应答信息的传输方法，包括：The embodiment of the invention provides a method for transmitting response information, including:
基站配置终端的混合自动请求重传应答消息HARQ-ACK的发送模式；The base station configures a hybrid mode of the hybrid automatic request retransmission response message HARQ-ACK of the terminal;
所述基站接收所述终端依据所述发送模式发送的HARQ-ACK。The base station receives a HARQ-ACK sent by the terminal according to the sending mode.
可选地，所述HARQ-ACK的发送模式包括以下至少之一：Optionally, the sending mode of the HARQ-ACK includes at least one of the following:
正常发送模式；Normal transmission mode;
重复发送模式；Repeated transmission mode;
支持重传模式。Support for retransmission mode.
可选地，所述基站配置终端的混合自动请求重传应答消息HARQ-ACK的发送模式包括以下至少之一：Optionally, the sending mode of the hybrid automatic request retransmission response message HARQ-ACK of the base station configuration terminal includes at least one of the following:
所述基站与所述终端约定默认模式为所述支持重传模式；The base station and the terminal agree that the default mode is the support retransmission mode;
所述基站通过高层信令的第一配置参数指示所述终端的发送模式为所述发送模式之一；And indicating, by the first configuration parameter of the high layer signaling, the sending mode of the terminal is one of the sending modes;
所述基站通过高层信令的第二配置参数指示所述支持重传模式；The base station indicates the support retransmission mode by using a second configuration parameter of the high layer signaling;
所述基站通过高层信令的第三配置参数指示所述重复发送模式。The base station indicates the repeated transmission mode by using a third configuration parameter of the high layer signaling.
可选地，所述第二配置参数为新增加的参数，所述第三配置参数为新增加的参数，或者，所述第三配置参数为相关协议的参数。Optionally, the second configuration parameter is a newly added parameter, the third configuration parameter is a newly added parameter, or the third configuration parameter is a parameter of a related protocol.
可选地，所述方法还包括：Optionally, the method further includes:
当所述基站配置所述终端的HARQ-ACK的发送模式为所述重复发送模式时，所述基站配置所述HARQ-ACK重复发送的次数以及在重复发送时所使用的资源。When the base station configures the transmission mode of the HARQ-ACK of the terminal to be the repeated transmission mode, the base station configures the number of times the HARQ-ACK is repeatedly transmitted and the resources used when the transmission is repeated.
可选地，所述方法还包括：Optionally, the method further includes:
当所述基站配置所述终端的HARQ-ACK发送模式为所述支持重传模式时，所述基站发送指示所述终端进行HARQ-ACK重传的下行控制信息，包括以下至少之一：When the base station configures the HARQ-ACK transmission mode of the terminal to be in the retransmission mode, the base station sends downlink control information indicating that the terminal performs HARQ-ACK retransmission, including at least one of the following:
所述基站通过在物理混合自动重传指示信息PHICH上的错误应答信息NACK来指示所述终端进行HARQ-ACK重传； The base station instructs the terminal to perform HARQ-ACK retransmission by using an error acknowledgement information NACK on the physical hybrid automatic retransmission indication information PHICH;
所述基站通过在物理下行控制信道PDCCH或者增强物理下行控制信道EPDCCH上发送的下行控制信息DCI来指示所述终端进行HARQ-ACK重传。The base station instructs the terminal to perform HARQ-ACK retransmission by using downlink control information DCI transmitted on the physical downlink control channel PDCCH or the enhanced physical downlink control channel EPDCCH.
可选地，当所述基站通过在PHICH上的NACK来指示所述终端进行HARQ-ACK重传时，所述的PHICH的资源根据承载所述HARQ-ACK的资源确定；Optionally, when the base station indicates that the terminal performs HARQ-ACK retransmission by using a NACK on the PHICH, the resource of the PHICH is determined according to a resource that carries the HARQ-ACK;
当所述基站通过在PDCCH或者EPDCCH上发送的DCI来指示所述终端进行HARQ-ACK重传时，所述方法还包括以下至少之一方式：When the base station indicates that the terminal performs HARQ-ACK retransmission by using DCI transmitted on the PDCCH or the EPDCCH, the method further includes at least one of the following manners:
所述基站通过已有DCI的已有的控制域的特定状态来指示，其中所述DCI已有的控制域的特定状态为相关协议未被使用的状态；The base station is indicated by a specific state of an existing control domain of the existing DCI, where the specific state of the existing control domain of the DCI is a state in which the related protocol is not used;
所述基站通过专有的无线网络临时标识RNTI对已有DCI进行加扰，所述专有RNTI用于指示采用所述RNTI加扰的DCI为指示所述终端进行HARQ-ACK重传的DCI，其中，所述专有RNTI通过高层信令配置给所述终端。The base station scrambles the existing DCI by using a dedicated radio network temporary identifier RNTI, where the dedicated RNTI is used to indicate that the DCI scrambled by using the RNTI is a DCI indicating that the terminal performs HARQ-ACK retransmission. The private RNTI is configured to the terminal by using high layer signaling.
可选地，所述DCI中除了包括用于指示HARQ-ACK重传的控制域外，还包括以下至少之一：Optionally, the DCI includes at least one of the following in addition to the control domain for indicating HARQ-ACK retransmission:
在所述HARQ-ACK重传时的资源指示控制域；a resource indication control domain at the time of the HARQ-ACK retransmission;
在所述HARQ-ACK重传时的传输功率控制域；a transmission power control field at the time of the HARQ-ACK retransmission;
在所述HARQ-ACK重传时的调制方式。Modulation mode at the time of HARQ-ACK retransmission.
可选地，所述方法还包括：Optionally, the method further includes:
当所述基站配置所述终端的HARQ-ACK发送模式为所述支持重传模式时，所述基站接收所述终端在第一预设子帧上第一次发送的HARQ-ACK；When the base station configures the HARQ-ACK transmission mode of the terminal to be in the support retransmission mode, the base station receives a HARQ-ACK that is sent by the terminal for the first time in the first preset subframe;
在所述基站检测出所述终端在第一预设子帧上发送的HARQ-ACK传输有误的情况下，所述基站在第二预设子帧之前不发送与所述HARQ-ACK对应的下行重传数据包或新的数据包时，所述基站接收终端在第三预设子帧上的发送HARQ-ACK重传信息。If the base station detects that the HARQ-ACK transmission sent by the terminal in the first preset subframe is incorrect, the base station does not send the HARQ-ACK corresponding to the second preset subframe. When the downlink retransmits a data packet or a new data packet, the base station receives the HARQ-ACK retransmission information sent by the terminal on the third preset subframe.
可选地，当所述基站同时配置了HARQ-ACK重复发送模式和HARQ-ACK重复发送模式使能时，所述基站与所述终端约定，在所述HARQ-ACK重传时，重复发送的次数相对于前一次发送次数递增。 Optionally, when the base station is configured with the HARQ-ACK repeated transmission mode and the HARQ-ACK repeated transmission mode enabled, the base station and the terminal agree to repeat the sending when the HARQ-ACK is retransmitted. The number of times is incremented relative to the previous number of transmissions.
可选地，当HARQ-ACK的配置在一个物理上行控制信道PUCCH上发送时，所述DCI在主下行分量载波上发送；Optionally, when the configuration of the HARQ-ACK is sent on one physical uplink control channel PUCCH, the DCI is sent on the primary downlink component carrier;
当HARQ-ACK的配置在多个PUCCH上发送时，所述DCI在所述PUCCH服务小区组所对应的主分量载波上发送。When the configuration of the HARQ-ACK is transmitted on multiple PUCCHs, the DCI is transmitted on a primary component carrier corresponding to the PUCCH serving cell group.
可选地，所述方法还包括：Optionally, the method further includes:
所述基站在DCI中携带下行分配索引(Downlink Assignment Index，简称为DAI)信息，所述DAI信息用于终端确定发送的HARQ-ACK。The base station carries Downlink Assignment Index (DAI) information in the DCI, and the DAI information is used by the terminal to determine the transmitted HARQ-ACK.
可选地，所述DAI信息为DCI中新增加的控制域或已有的控制域，且DAI信息在不同的DCI所表示的含义不同，其中所述不同的DCI指不同服务小区或子帧的DCI。Optionally, the DAI information is a newly added control domain or an existing control domain in the DCI, and the DAI information is different in meanings represented by different DCIs, where the different DCIs refer to different serving cells or subframes. DCI.
可选地，该方法还包括：Optionally, the method further includes:
所述基站通过调度的N个服务小区中的前面N-m个服务小区的DCI中的DAI指示按照一定顺序截止到当前服务小区已经调度的服务小区的数量，调度的N个服务小区中的最后m个服务小区的DCI中的DAI指示当前子帧调度的服务小区总数；或者，最后m个服务小区的DCI中的DAI重复调度的第N-m个服务小区的DCI中的DAI；或者，最后m个服务小区的DCI中的DAI与调度的第N-m个服务小区的DCI的DAI具有预设的偏置值且都相同，其中，N和m均为正整数，m为基站与终端约定好的取值。The base station indicates, by a DAI in the DCI of the preceding Nm serving cells in the scheduled N serving cells, that the number of serving cells that have been scheduled by the current serving cell in a certain order, and the last m of the N serving cells that are scheduled The DAI in the DCI of the serving cell indicates the total number of serving cells scheduled in the current subframe; or the DAI in the DCI of the Nm serving cell in which the DAI of the last m serving cells is repeatedly scheduled; or, the last m serving cells The DAI in the DCI and the DAI of the scheduled Nm serving cell have the preset offset values and are the same, where N and m are both positive integers, and m is a negotiated value between the base station and the terminal.
本发明实施例还提供了一种应答信息的传输方法，包括：The embodiment of the invention further provides a method for transmitting response information, including:
终端确定混合自动请求重传应答消息HARQ-ACK的发送模式；The terminal determines a transmission mode of the hybrid automatic request retransmission response message HARQ-ACK;
所述终端依据基站配置的HARQ-ACK的发送模式向基站发送HARQ-ACK。The terminal sends a HARQ-ACK to the base station according to a transmission mode of the HARQ-ACK configured by the base station.
可选地，所述HARQ-ACK的发送模式包括以下至少之一：Optionally, the sending mode of the HARQ-ACK includes at least one of the following:
正常发送模式；Normal transmission mode;
重复发送模式；Repeated transmission mode;
支持重传模式。Support for retransmission mode.
可选地，所述终端确定HARQ-ACK的发送模式包括以下至少之一： Optionally, the determining, by the terminal, that the sending mode of the HARQ-ACK includes at least one of the following:
所述终端与所述基站约定默认模式为所述支持重传模式；The terminal and the base station agree that the default mode is the support retransmission mode;
所述基站通过高层信令的第一配置参数指示所述终端的发送模式为所述发送模式之一；And indicating, by the first configuration parameter of the high layer signaling, the sending mode of the terminal is one of the sending modes;
所述基站通过高层信令的第二配置参数指示所述支持重传模式；The base station indicates the support retransmission mode by using a second configuration parameter of the high layer signaling;
所述基站通过高层信令的第三配置参数指示所述重复发送模式。The base station indicates the repeated transmission mode by using a third configuration parameter of the high layer signaling.
可选地，所述第二配置参数为新增加的配置参数，所述第三配置参数为新增加的配置参数，或者，所述第三配置参数为相关协议的配置参数。Optionally, the second configuration parameter is a newly added configuration parameter, the third configuration parameter is a newly added configuration parameter, or the third configuration parameter is a configuration parameter of a related protocol.
可选地，所述依据基站配置的HARQ-ACK的发送模式向基站发送HARQ-ACK包括：Optionally, the sending the HARQ-ACK to the base station according to the sending mode of the HARQ-ACK configured by the base station includes:
当所述HARQ-ACK发送模式确定为所述重复发送模式时，所述终端在连续的上行子帧上采用高层配置的资源重复发送所述HARQ-ACK，其中所述连续的上行子帧数由高层配置。When the HARQ-ACK transmission mode is determined to be the repeated transmission mode, the terminal repeatedly transmits the HARQ-ACK by using a resource configured by a higher layer on consecutive uplink subframes, where the consecutive uplink subframe numbers are High-level configuration.
可选地，所述方法还包括：Optionally, the method further includes:
当所述HARQ-ACK发送模式确定为所述支持重传模式时，所述终端接收基站发送的指示所述终端进行HARQ-ACK重传的下行控制信息，所述终端根据所述下行控制信息，确定是否进行HARQ-ACK重传。When the HARQ-ACK transmission mode is determined to be the support retransmission mode, the terminal receives downlink control information that is sent by the base station and indicates that the terminal performs HARQ-ACK retransmission, and the terminal is configured according to the downlink control information. Determine whether to perform HARQ-ACK retransmission.
可选地，所述终端接收所述基站发送的指示所述终端进行HARQ-ACK重传的下行控制信息，包括以下至少之一：Optionally, the terminal receives downlink control information that is sent by the base station and indicates that the terminal performs HARQ-ACK retransmission, and includes at least one of the following:
所述终端接收在物理混合自动重传指示信息PHICH上发送的下行控制信息，所述的PHICH的资源根据承载所述HARQ-ACK的资源确定；The terminal receives downlink control information that is sent on the physical hybrid automatic retransmission indication information PHICH, and the resources of the PHICH are determined according to resources that carry the HARQ-ACK;
所述终端接收在物理下行控制信道PDCCH或者增强物理下行控制信道EPDCCH上发送的下行控制信息DCI。The terminal receives downlink control information DCI transmitted on the physical downlink control channel PDCCH or the enhanced physical downlink control channel EPDCCH.
可选地，所述方法还包括：Optionally, the method further includes:
当所述终端接收到所述PHICH上的错误应答信息NACK时，所述终端进行HARQ-ACK重传；When the terminal receives the error response information NACK on the PHICH, the terminal performs HARQ-ACK retransmission;
当所述终端接收到的所述DCI中预设的控制域为预设的特定状态时，所述终端进行HARQ-ACK重传。 When the preset control domain in the DCI received by the terminal is a preset specific state, the terminal performs HARQ-ACK retransmission.
可选地，所述DCI中除了包括用于指示HARQ-ACK重传的控制域外，还包括以下至少之一：Optionally, the DCI includes at least one of the following in addition to the control domain for indicating HARQ-ACK retransmission:
在所述HARQ-ACK重传时的资源指示控制域；a resource indication control domain at the time of the HARQ-ACK retransmission;
在所述HARQ-ACK重传时的传输功率控制域；a transmission power control field at the time of the HARQ-ACK retransmission;
在所述HARQ-ACK重传时的调制方式。Modulation mode at the time of HARQ-ACK retransmission.
可选地，所述方法还包括：Optionally, the method further includes:
所述终端采用专有的无线网络临时标识RNTI对所述DCI进行解扰，并根据高层配置的索引信息获取与所述终端相关的HARQ-ACK重传信息。The terminal uses the proprietary radio network temporary identifier RNTI to descramble the DCI, and acquires HARQ-ACK retransmission information related to the terminal according to the index information of the high layer configuration.
可选地，当所述下行控制信息指示终端要进行HARQ-ACK重传时，所述终端在第三预设上行子帧上进行HARQ-ACK重传。Optionally, when the downlink control information indicates that the terminal is to perform HARQ-ACK retransmission, the terminal performs HARQ-ACK retransmission on the third preset uplink subframe.
可选地，当所述HARQ-ACK发送模式确定为支持重传模式时，所述终端在第二预设子帧之前没有接收到所述基站发送的与所述HARQ-ACK对应的下行重传数据包或新的数据包且所述终端前一次发送的HARQ-ACK信息中包含NACK时，所述终端在第三预设上行子帧上行HARQ-ACK重传。Optionally, when the HARQ-ACK transmission mode is determined to support the retransmission mode, the terminal does not receive the downlink retransmission corresponding to the HARQ-ACK sent by the base station before the second preset subframe. When the data packet or the new data packet includes the NACK in the HARQ-ACK information sent by the terminal, the terminal performs the HARQ-ACK retransmission in the third preset uplink subframe.
可选地，所述终端在第三预设上行子帧上进行HARQ-ACK重传，包括以下至少之一：Optionally, the terminal performs HARQ-ACK retransmission on the third preset uplink subframe, including at least one of the following:
当所述终端在所述第三预设上行子帧上没有物理上行共享信道PUSCH发送，或所述终端在所述第三预设子帧上有PUSCH发送且所述终端配置为允许物理上行控制信道PUCCH和PUSCH同传时，所述终端在所述第三预设子帧上采用预设的PUCCH资源进行HARQ-ACK重传，其中所述的第三预设上行子帧为根据所述下行控制信息确定的上行子帧，或与基站约定好的上行子帧，所述预设的PUCCH资源为根据所述下行控制信息确定的PUCCH资源，或高层配置的PUCCH资源；When the terminal does not have a physical uplink shared channel PUSCH transmission on the third preset uplink subframe, or the terminal has a PUSCH transmission on the third preset subframe, and the terminal is configured to allow physical uplink control. When the channel PUCCH and the PUSCH are transmitted simultaneously, the terminal performs a HARQ-ACK retransmission using the preset PUCCH resource in the third preset subframe, where the third preset uplink subframe is according to the downlink. The uplink subframe that is determined by the control information, or the uplink subframe that is agreed with the base station, where the preset PUCCH resource is a PUCCH resource determined according to the downlink control information, or a PUCCH resource configured by a higher layer;
当所述终端在所述第三预设子帧上有PUSCH发送且所述终端配置为不允许PUCCH和PUSCH同传时，所述终端在所述第三预设子帧上在所述PUSCH上进行HARQ-ACK重传。When the terminal has PUSCH transmission on the third preset subframe, and the terminal is configured to not allow PUCCH and PUSCH to transmit simultaneously, the terminal is on the PUSCH in the third preset subframe. Perform HARQ-ACK retransmission.
可选地，当所述HARQ-ACK发送模式确定为所述支持重传模式和所述重复发送模式的结合模式时，所述终端在连续的上行子帧上采用高层配置的 资源上重复发送所述的HARQ-ACK，其中所述连续的上行子帧数由高层配置，然后，所述方法还包括：Optionally, when the HARQ-ACK transmission mode is determined to be the combined mode of the retransmission mode and the repeated transmission mode, the terminal adopts a high-level configuration on consecutive uplink subframes. The HARQ-ACK is repeatedly sent on the resource, where the consecutive uplink subframes are configured by a higher layer, and then the method further includes:
所述终端根据HARQ-ACK发送模式为所述支持重传模式进行后续处理，其中，所述终端要发送HARQ-ACK时，都进行重复发送处理。The terminal performs subsequent processing in the support retransmission mode according to the HARQ-ACK transmission mode, where the terminal performs repeated transmission processing when the HARQ-ACK is to be sent.
可选地，当所述HARQ-ACK发送模式确定为所述支持重传模式和所述重复发送模式的结合模式时，所述终端根据与所述基站的约定，在进行HARQ-ACK重传时，重复发送的次数相对于前一次发送次数递增。Optionally, when the HARQ-ACK transmission mode is determined to be the combined mode of the retransmission mode and the repeated transmission mode, the terminal performs HARQ-ACK retransmission according to an agreement with the base station. The number of repeated transmissions is incremented relative to the previous number of transmissions.
可选地，所述方法还包括：Optionally, the method further includes:
所述终端向基站发送HARQ-ACK前，确定需要反馈的HARQ-ACK比特数以及反馈的HARQ-ACK比特序列。Before transmitting the HARQ-ACK to the base station, the terminal determines the number of HARQ-ACK bits that need to be fed back and the HARQ-ACK bit sequence that is fed back.
可选地，所述确定需要反馈的HARQ-ACK比特数以及反馈的HARQ-ACK比特序列包括：Optionally, the determining the number of HARQ-ACK bits that need to be fed back and the feedback HARQ-ACK bit sequence include:
所述终端根据所述基站发送的DAI确定需要反馈的HARQ-ACK比特数以及反馈的HARQ-ACK比特序列。The terminal determines, according to the DAI sent by the base station, the number of HARQ-ACK bits that need to be fed back and the HARQ-ACK bit sequence that is fed back.
可选地，所述DAI信息为DCI中新增加的控制域或已有的控制域，且所述DAI信息在不同的DCI所表示的含义不同，其中所述不同的DCI指不同服务小区或子帧的DCI。Optionally, the DAI information is a newly added control domain or an existing control domain in the DCI, and the DAI information is different in meanings represented by different DCIs, where the different DCIs refer to different serving cells or sub- The DCI of the frame.
可选地，所述方法还包括：Optionally, the method further includes:
所述终端根据与所述基站约定，调度的N个服务小区中的前面N-m个服务小区的DCI中的DAI指示按照一定顺序截止到当前服务小区已经调度的服务小区的数量，调度的N个服务小区中的最后m个服务小区的DCI中的DAI指示当前子帧调度的服务小区总数；或者，最后m个服务小区的DCI中的DAI重复调度的第N-m个服务小区的DCI中的DAI；或者，最后m个服务小区的DCI中的DAI与调度的第N-m个服务小区的DCI的DAI具有预设的偏置值且都相同，其中，N和m均为正整数，m为基站与终端约定好的取值。The terminal according to the agreement with the base station, the DAI in the DCI of the first Nm serving cells in the N scheduled serving cells indicates that the number of serving cells that have been scheduled by the current serving cell is in a certain order, and the N services are scheduled. The DAI in the DCI of the last m serving cells in the cell indicates the total number of serving cells scheduled in the current subframe; or the DAI in the DCI of the Nm serving cell in which the DAI in the last m serving cells is repeatedly scheduled; or The DAI in the DCI of the last m serving cells and the DAI of the DCI of the scheduled Nm serving cells have preset offset values and are the same, where N and m are positive integers, and m is a base station and terminal agreement Good value.
本发明实施例还提供了一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令被执行时实现上述应答信息的传输方法。The embodiment of the invention further provides a computer readable storage medium storing computer executable instructions, the method for transmitting the response information being implemented when the computer executable instructions are executed.
本发明实施例还提供了一种应答信息的传输装置，位于基站中，包括： The embodiment of the invention further provides a transmission device for response information, which is located in the base station and includes:
配置模块，设置为：基站配置终端的混合自动请求重传应答消息HARQ-ACK的发送模式；a configuration module, configured to: a base station configuration terminal, a hybrid automatic request retransmission response message, a HARQ-ACK transmission mode;
接收模块，设置为：所述基站接收所述终端依据所述发送模式发送的HARQ-ACK。The receiving module is configured to: the base station receives the HARQ-ACK sent by the terminal according to the sending mode.
可选地，所述HARQ-ACK的发送模式包括以下至少之一：Optionally, the sending mode of the HARQ-ACK includes at least one of the following:
正常发送模式；Normal transmission mode;
重复发送模式；Repeated transmission mode;
支持重传模式。Support for retransmission mode.
可选地，所述配置模块包括以下至少之一：Optionally, the configuration module includes at least one of the following:
第一配置单元，设置为：所述终端与所述基站约定默认模式为所述支持重传模式；a first configuration unit, configured to: the terminal and the base station agree that a default mode is the support retransmission mode;
第二配置单元，设置为：所述基站通过高层信令的第一配置参数指示所述终端的发送模式为所述发送模式之一；a second configuration unit, configured to: indicate, by the base station, that a sending mode of the terminal is one of the sending modes by using a first configuration parameter of the high layer signaling;
第三配置单元，设置为：所述基站通过高层信令的第二配置参数指示所述支持重传模式；a third configuration unit, configured to: indicate, by the second base station, the support retransmission mode by using a second configuration parameter of the high layer signaling;
第四配置单元，设置为：所述基站通过高层信令的第三配置参数指示所述重复发送模式。And a fourth configuration unit, configured to: indicate, by the base station, the repeated transmission mode by using a third configuration parameter of the high layer signaling.
本发明实施例还提供了一种基站，包括：上述任一项所述应答信息的传输装置。The embodiment of the invention further provides a base station, comprising: the transmission device of the response information according to any one of the above.
本发明实施例还提供了一种应答信息的传输装置，位于终端中，包括：The embodiment of the invention further provides a device for transmitting response information, which is located in the terminal, and includes:
确定模块，设置为：终端确定混合自动请求重传应答消息HARQ-ACK的发送模式；Determining a module, configured to: determine, by the terminal, a transmission mode of the hybrid automatic request retransmission response message HARQ-ACK;
发送模块，设置为：所述终端依据基站配置的HARQ-ACK的发送模式向基站发送HARQ-ACK。The sending module is configured to: send, by the terminal, a HARQ-ACK to the base station according to a transmission mode of the HARQ-ACK configured by the base station.
可选地，所述HARQ-ACK的发送模式包括以下至少之一：Optionally, the sending mode of the HARQ-ACK includes at least one of the following:
正常发送模式；Normal transmission mode;
重复发送模式； Repeated transmission mode;
支持重传模式。Support for retransmission mode.
可选地，所述确定模块包括以下至少之一：Optionally, the determining module includes at least one of the following:
第一确定单元，设置为：所述终端与所述基站约定默认模式为所述支持重传模式；a first determining unit, configured to: the terminal and the base station agree that a default mode is the support retransmission mode;
第二确定单元，设置为：所述基站通过高层信令的第一配置参数指示所述终端的发送模式为所述发送模式之一；a second determining unit, configured to: indicate, by the base station, that the sending mode of the terminal is one of the sending modes by using a first configuration parameter of the high layer signaling;
第三确定单元，设置为：所述基站通过高层信令的第二配置参数指示所述支持重传模式；a third determining unit, configured to: the base station indicates the support retransmission mode by using a second configuration parameter of the high layer signaling;
第四确定单元，设置为：所述基站通过高层信令的第三配置参数指示所述重复发送模式。And a fourth determining unit, configured to: indicate, by the base station, the repeated transmission mode by using a third configuration parameter of the high layer signaling.
本发明实施例还提供了一种终端，包括：上述任一项所述应答信息的传输装置。The embodiment of the invention further provides a terminal, comprising: the transmission device of the response information according to any one of the above items.
通过本发明实施例，基站配置终端的混合自动请求重传应答消息HARQ-ACK的发送模式，所述基站接收所述终端依据所述发送模式发送的HARQ-ACK，解决了不必要的PDSCH重传浪费下行资源的问题，提高了下行资源的利用率。According to the embodiment of the present invention, the base station configures a hybrid automatic request retransmission response message HARQ-ACK transmission mode of the terminal, and the base station receives the HARQ-ACK sent by the terminal according to the transmission mode, and solves unnecessary PDSCH retransmission. The problem of wasting downlink resources increases the utilization of downlink resources.
在阅读并理解了附图和详细描述后，可以明白其他方面。Other aspects will be apparent upon reading and understanding the drawings and detailed description.
附图概述BRIEF abstract
图1是根据相关技术中PUCCH格式1a/1b的结构示意图；1 is a schematic structural diagram of a PUCCH format 1a/1b according to the related art;
图2是根据相关技术中PUCCH格式1b联合信道选择的结构示意图；2 is a schematic structural diagram of joint channel selection according to PUCCH format 1b in the related art;
图3是根据相关技术中PUCCH格式3的结构示意图；FIG. 3 is a schematic structural diagram of a PUCCH format 3 according to the related art;
图4是根据本发明实施例的一种应答信息的传输方法的流程图；4 is a flowchart of a method for transmitting response information according to an embodiment of the present invention;
图5是根据本发明实施例的另一种应答信息的传输方法的流程图；FIG. 5 is a flowchart of another method for transmitting response information according to an embodiment of the present invention; FIG.
图6是根据本发明实施例的一种应答信息的传输装置的结构框图；FIG. 6 is a structural block diagram of a transmission apparatus for response information according to an embodiment of the present invention; FIG.
图7是根据本发明实施例的另一种应答信息的传输装置的结构框图；FIG. 7 is a structural block diagram of another apparatus for transmitting response information according to an embodiment of the present invention; FIG.
图8是根据本发明可选实施例的一种候选的新的PUCCH格式的结构示 意图；FIG. 8 is a structural diagram of a candidate new PUCCH format according to an alternative embodiment of the present invention. intention;
图9是根据本发明可选实施例的PDSCH发送、HARQ-ACK发送以及PDSCH重传的示例示意图；9 is a schematic diagram showing an example of PDSCH transmission, HARQ-ACK transmission, and PDSCH retransmission according to an optional embodiment of the present invention;
图10是根据本发明可选实施例的DCI设计的一个示意图；10 is a schematic diagram of a DCI design in accordance with an alternate embodiment of the present invention;
图11是根据本发明可选实施例的PDSCH重传的一个示例示意图；11 is a diagram showing an example of PDSCH retransmission according to an alternative embodiment of the present invention;
图12是根据本发明可选实施例的不发送新包或重传包来约定重传模式的示例示意图；12 is a diagram showing an example of an appointment retransmission mode without transmitting a new packet or a retransmission packet, in accordance with an alternative embodiment of the present invention;
图13是根据本发明可选实施例的基站配置了终端的HARQ-ACK发送模式为重复结合重传模式时，终端基站处理过程的一个示例示意图；13 is a schematic diagram showing an example of a processing procedure of a terminal base station when a base station configures a HARQ-ACK transmission mode of a terminal to be a repetitive combined retransmission mode according to an alternative embodiment of the present invention;
图14是根据本发明可选实施例的基站配置了终端的HARQ-ACK发送模式为重复结合重传模式时，终端基站处理过程的另一个示例示意图；FIG. 14 is another schematic diagram of a process of a terminal base station processing when a base station configures a HARQ-ACK transmission mode of a terminal to be a repeated combined retransmission mode according to an alternative embodiment of the present invention; FIG.
图15是根据本发明可选实施例的DAI第一个示意图；Figure 15 is a first schematic diagram of a DAI in accordance with an alternative embodiment of the present invention;
图16是根据本发明可选实施例的DAI第二个示意图；16 is a second schematic diagram of a DAI in accordance with an alternative embodiment of the present invention;
图17是根据本发明可选实施例的DAI第三个示意图；17 is a third schematic diagram of a DAI in accordance with an alternative embodiment of the present invention;
图18是根据本发明可选实施例的DAI第四个示意图；Figure 18 is a fourth schematic diagram of a DAI in accordance with an alternative embodiment of the present invention;
图19是根据本发明可选实施例的DAI第五个示意图；19 is a fifth schematic diagram of a DAI in accordance with an alternative embodiment of the present invention;
图20是根据本发明可选实施例的DAI第六个示意图；20 is a sixth schematic diagram of a DAI in accordance with an alternative embodiment of the present invention;
图21是根据本发明可选实施例的DAI第七个示意图。21 is a seventh schematic diagram of a DAI in accordance with an alternative embodiment of the present invention.
本发明的较佳实施方式Preferred embodiment of the invention
下面结合附图对本发明的实施方式进行描述。需要说明的是，在不冲突的情况下，本申请中的实施例及实施例中的各种方式可以相互组合。Embodiments of the present invention will be described below with reference to the accompanying drawings. It should be noted that the embodiments in the present application and the various manners in the embodiments may be combined with each other without conflict.
需要说明的是，本文中的术语“第一”、“第二”等是用于区别类似的对象，而不必用于描述特定的顺序或先后次序。It should be noted that the terms "first", "second" and the like are used herein to distinguish similar objects, and are not necessarily used to describe a particular order or order.
在本实施例中提供了一种应答信息的传输方法，图4是根据本发明实施例的一种应答信息的传输方法的流程图，如图4所示，所述方法包括如下步骤： In this embodiment, a method for transmitting response information is provided. FIG. 4 is a flowchart of a method for transmitting response information according to an embodiment of the present invention. As shown in FIG. 4, the method includes the following steps:
步骤S402，基站配置终端的混合自动请求重传应答消息HARQ-ACK的发送模式；Step S402, the base station configures a hybrid automatic request retransmission response message HARQ-ACK transmission mode of the terminal;
步骤S404，所述基站接收所述终端依据所述发送模式发送的HARQ-ACK。Step S404, the base station receives the HARQ-ACK sent by the terminal according to the sending mode.
通过上述步骤，基站配置终端的混合自动请求重传应答消息HARQ-ACK的发送模式，所述基站接收所述终端依据所述发送模式发送的HARQ-ACK，解决了不必要的PDSCH重传浪费下行资源的问题，提高了下行资源的利用率。Through the above steps, the base station configures the hybrid automatic request retransmission acknowledgement message HARQ-ACK transmission mode of the terminal, and the base station receives the HARQ-ACK sent by the terminal according to the transmission mode, and solves the unnecessary PDSCH retransmission wastedown. The problem of resources has improved the utilization of downlink resources.
在本实施例中，所述HARQ-ACK的发送模式可包括以下至少之一：In this embodiment, the sending mode of the HARQ-ACK may include at least one of the following:
正常发送模式；Normal transmission mode;
重复发送模式；Repeated transmission mode;
支持重传模式。Support for retransmission mode.
在本实施例中，所述基站配置终端的混合自动请求重传应答消息HARQ-ACK的发送模式可包括以下至少之一：In this embodiment, the sending mode of the hybrid automatic request retransmission response message HARQ-ACK of the base station configuration terminal may include at least one of the following:
方式1，所述基站与所述终端约定默认模式为所述支持重传模式；In the mode 1, the base station and the terminal agree that the default mode is the support retransmission mode;
方式2，所述基站通过高层信令的第一配置参数指示所述终端的发送模式为所述发送模式之一；In the mode 2, the base station indicates, by using a first configuration parameter of the high layer signaling, that the sending mode of the terminal is one of the sending modes;
方式3，所述基站通过高层信令的第二配置参数指示所述支持重传模式；In a third mode, the base station indicates the support retransmission mode by using a second configuration parameter of the high layer signaling;
方式4，所述基站通过高层信令的第三配置参数指示所述重复发送模式。In a fourth mode, the base station indicates the repeated transmission mode by using a third configuration parameter of the high layer signaling.
在本实施例中，所述第二配置参数可为新增加的参数，所述第三配置参数可为新增加的参数，或者，所述第三配置参数可为相关协议的参数。In this embodiment, the second configuration parameter may be a newly added parameter, the third configuration parameter may be a newly added parameter, or the third configuration parameter may be a parameter of a related protocol.
其中，协议例如：LTE及其后续演进的标准版本中所规范的协议。Among them, the protocol is, for example, a protocol specified in the standard version of LTE and its subsequent evolution.
在本实施例中，该方法还可包括：In this embodiment, the method may further include:
当所述基站配置所述终端的HARQ-ACK的发送模式为所述重复发送模式时，所述基站配置所述HARQ-ACK重复发送的次数以及在重复发送时所使用的资源。When the base station configures the transmission mode of the HARQ-ACK of the terminal to be the repeated transmission mode, the base station configures the number of times the HARQ-ACK is repeatedly transmitted and the resources used when the transmission is repeated.
在本实施例中，该方法还可包括： In this embodiment, the method may further include:
当所述基站配置所述终端的HARQ-ACK发送模式为所述支持重传模式时，所述基站发送指示所述终端进行HARQ-ACK重传的下行控制信息，包括以下至少之一：When the base station configures the HARQ-ACK transmission mode of the terminal to be in the retransmission mode, the base station sends downlink control information indicating that the terminal performs HARQ-ACK retransmission, including at least one of the following:
所述基站通过在物理混合自动重传指示信息PHICH上的错误应答信息NACK来指示所述终端进行HARQ-ACK重传；The base station instructs the terminal to perform HARQ-ACK retransmission by using an error acknowledgement information NACK on the physical hybrid automatic retransmission indication information PHICH;
所述基站通过在物理下行控制信道PDCCH或者增强物理下行控制信道EPDCCH上发送的下行控制信息(Downlink Control Information，简称为DCI)来指示所述终端进行HARQ-ACK重传。The base station instructs the terminal to perform HARQ-ACK retransmission by using downlink control information (Downlink Control Information, DCI for short) transmitted on the physical downlink control channel PDCCH or the enhanced physical downlink control channel (EPDCCH).
在本实施例中，当所述基站通过在PHICH上的NACK来指示所述终端进行HARQ-ACK重传时，所述的PHICH的资源可根据承载所述HARQ-ACK的资源确定；In this embodiment, when the base station indicates that the terminal performs HARQ-ACK retransmission by using a NACK on the PHICH, the resource of the PHICH may be determined according to a resource that carries the HARQ-ACK;
当所述基站通过在PDCCH或者EPDCCH上发送的DCI来指示所述终端进行HARQ-ACK重传时，该方法还可包括以下至少之一方式：When the base station indicates that the terminal performs HARQ-ACK retransmission through DCI transmitted on the PDCCH or the EPDCCH, the method may further include at least one of the following manners:
所述基站通过已有DCI的已有的控制域的特定状态来指示，其中所述DCI已有的控制域的特定状态为相关协议未被使用的状态；The base station is indicated by a specific state of an existing control domain of the existing DCI, where the specific state of the existing control domain of the DCI is a state in which the related protocol is not used;
所述基站通过专有的无线网络临时标识RNTI对已有大小的DCI进行加扰，所述专有RNTI用于指示采用所述RNTI加扰的DCI为指示所述终端进行HARQ-ACK重传的DCI，其中，所述专有RNTI通过高层信令配置给所述终端。The base station scrambles the DCI of the existing size by using a dedicated radio network temporary identifier RNTI, where the dedicated RNTI is used to indicate that the DCI scrambled by the RNTI is used to indicate that the terminal performs HARQ-ACK retransmission. The DCI, wherein the private RNTI is configured to the terminal by higher layer signaling.
在本实施例中，所述DCI中除了包括用于指示HARQ-ACK重传的控制域外，还可包括以下至少之一：In this embodiment, the DCI may include at least one of the following in addition to the control domain for indicating HARQ-ACK retransmission:
在所述HARQ-ACK重传时的资源指示控制域；a resource indication control domain at the time of the HARQ-ACK retransmission;
在所述HARQ-ACK重传时的传输功率控制域；a transmission power control field at the time of the HARQ-ACK retransmission;
在所述HARQ-ACK重传时的调制方式。Modulation mode at the time of HARQ-ACK retransmission.
在本实施例中，该方法还可包括：In this embodiment, the method may further include:
当所述基站配置所述终端的HARQ-ACK发送模式为所述支持重传模式时，所述基站接收所述终端在第一预设子帧上第一次发送的HARQ-ACK； When the base station configures the HARQ-ACK transmission mode of the terminal to be in the support retransmission mode, the base station receives a HARQ-ACK that is sent by the terminal for the first time in the first preset subframe;
在所述基站检测出所述终端在第一预设子帧上发送的HARQ-ACK传输有误的情况下，所述基站在第二预设子帧之前不发送与所述HARQ-ACK对应的下行重传数据包或新的数据包时，所述基站接收终端在第三预设子帧上的发送HARQ-ACK重传信息。If the base station detects that the HARQ-ACK transmission sent by the terminal in the first preset subframe is incorrect, the base station does not send the HARQ-ACK corresponding to the second preset subframe. When the downlink retransmits a data packet or a new data packet, the base station receives the HARQ-ACK retransmission information sent by the terminal on the third preset subframe.
在本实施例中，可选地，当所述基站同时配置了HARQ-ACK重复发送模式和HARQ-ACK重复发送模式使能时，所述基站与所述终端约定，在所述HARQ-ACK重传时，重复发送的次数相对于前一次发送次数递增。In this embodiment, optionally, when the base station is configured with the HARQ-ACK repeated transmission mode and the HARQ-ACK repeated transmission mode enabled, the base station and the terminal agree that the HARQ-ACK is heavy. At the time of transmission, the number of repeated transmissions is incremented relative to the previous number of transmissions.
在本实施例中，当HARQ-ACK的配置在一个物理上行控制信道PUCCH上发送时，所述DCI可在主下行分量载波上发送；In this embodiment, when the configuration of the HARQ-ACK is sent on one physical uplink control channel PUCCH, the DCI may be sent on the primary downlink component carrier;
当HARQ-ACK的配置在多个PUCCH上发送时，所述DCI可在所述PUCCH服务小区组所对应的主分量载波上发送。When the configuration of the HARQ-ACK is transmitted on multiple PUCCHs, the DCI may be transmitted on a primary component carrier corresponding to the PUCCH serving cell group.
在本实施例中，该方法还可包括：In this embodiment, the method may further include:
所述基站在DCI中携带下行分配索引(Downlink Assignment Index，简称为DAI)信息，所述DAI信息用于终端确定发送的HARQ-ACK。The base station carries Downlink Assignment Index (DAI) information in the DCI, and the DAI information is used by the terminal to determine the transmitted HARQ-ACK.
在本实施例中，所述DAI信息可为DCI中新增加的控制域或已有的控制域，且DAI信息在不同的DCI所表示的含义可以不同，其中所述不同的DCI可以指不同服务小区或子帧的DCI。In this embodiment, the DAI information may be a newly added control domain or an existing control domain in the DCI, and the meanings of the DAI information may be different in different DCIs, where the different DCIs may refer to different services. The DCI of a cell or subframe.
在本实施例中，所述基站可通过调度的N个服务小区中的前面N-m个服务小区的DCI中的DAI指示按照一定顺序截止到当前服务小区已经调度的服务小区的数量，调度的N个服务小区中的最后m个服务小区的DCI中的DAI指示当前子帧调度的服务小区总数；或者，最后m个服务小区的DCI中的DAI重复调度的第N-m个服务小区的DCI中的DAI；或者，最后m个服务小区的DCI中的DAI与调度的第N-m个服务小区的DCI的DAI具有预设的偏置值且都相同，其中，N和m均为正整数，m为基站与终端约定好的取值。In this embodiment, the base station may indicate the number of serving cells that have been scheduled by the current serving cell in a certain order by the DAI in the DCI of the preceding Nm serving cells in the scheduled N serving cells, and the scheduled N The DAI in the DCI of the last m serving cells in the serving cell indicates the total number of serving cells scheduled in the current subframe; or the DAI in the DCI of the Nm serving cell in which the DAI in the last m serving cells is repeatedly scheduled; Or, the DAI in the DCI of the last m serving cells and the DAI of the DCI of the scheduled Nm serving cells have preset offset values, and both are N and m are positive integers, and m is a base station and a terminal. The agreed value is good.
在本实施例中还提供了一种应答信息的传输方法，图5是根据本发明实施例的另一种应答信息的传输方法的流程图，如图5所示，所述方法包括如下步骤：In this embodiment, a method for transmitting response information is also provided. FIG. 5 is a flowchart of another method for transmitting response information according to an embodiment of the present invention. As shown in FIG. 5, the method includes the following steps:
步骤S502，终端确定HARQ-ACK的发送模式； Step S502, the terminal determines a transmission mode of the HARQ-ACK.
步骤S504，所述终端依据基站配置的HARQ-ACK的发送模式向基站发送HARQ-ACK。Step S504: The terminal sends a HARQ-ACK to the base station according to a transmission mode of the HARQ-ACK configured by the base station.
通过上述步骤，终端确定HARQ-ACK的发送模式，所述终端依据所述发送模式向基站发送HARQ-ACK，解决了不必要的PDSCH重传浪费下行资源的问题，提高了下行资源的利用率。Through the above steps, the terminal determines the transmission mode of the HARQ-ACK, and the terminal sends the HARQ-ACK to the base station according to the transmission mode, which solves the problem that the unnecessary PDSCH retransmission wastes the downlink resources and improves the utilization of the downlink resources.
在本实施例中，所述HARQ-ACK的发送模式可包括以下至少之一：In this embodiment, the sending mode of the HARQ-ACK may include at least one of the following:
正常发送模式；Normal transmission mode;
重复发送模式；Repeated transmission mode;
支持重传模式。Support for retransmission mode.
在本实施例中，所述终端确定HARQ-ACK的发送模式可包括以下至少之一：In this embodiment, the terminal determines that the transmission mode of the HARQ-ACK may include at least one of the following:
方式1，所述终端与所述基站约定默认模式为所述支持重传模式；In the mode 1, the terminal and the base station agree that the default mode is the support retransmission mode;
方式2，所述基站通过高层信令的第一配置参数指示所述终端的发送模式为所述发送模式之一；In the mode 2, the base station indicates, by using a first configuration parameter of the high layer signaling, that the sending mode of the terminal is one of the sending modes;
方式3，所述基站通过高层信令的第二配置参数指示所述支持重传模式；In a third mode, the base station indicates the support retransmission mode by using a second configuration parameter of the high layer signaling;
方式4，所述基站通过高层信令的第三配置参数指示所述重复发送模式。In a fourth mode, the base station indicates the repeated transmission mode by using a third configuration parameter of the high layer signaling.
在本实施例中，所述第二配置参数可为新增加的配置参数，所述第三配置参数可为新增加的配置参数，或者，所述第三配置参数可为相关协议的配置参数。In this embodiment, the second configuration parameter may be a newly added configuration parameter, the third configuration parameter may be a newly added configuration parameter, or the third configuration parameter may be a configuration parameter of a related protocol.
其中，协议例如：LTE及其后续演进的标准版本中所规范的协议。Among them, the protocol is, for example, a protocol specified in the standard version of LTE and its subsequent evolution.
在本实施例中，所述依据基站配置的HARQ-ACK的发送模式向基站发送HARQ-ACK可包括：In this embodiment, the sending the HARQ-ACK to the base station according to the transmission mode of the HARQ-ACK configured by the base station may include:
当所述HARQ-ACK发送模式确定为所述重复发送模式时，所述终端在连续的上行子帧上采用高层配置的资源重复发送所述HARQ-ACK，其中所述连续的上行子帧数由高层配置。When the HARQ-ACK transmission mode is determined to be the repeated transmission mode, the terminal repeatedly transmits the HARQ-ACK by using a resource configured by a higher layer on consecutive uplink subframes, where the consecutive uplink subframe numbers are High-level configuration.
在本实施例中，该方法还可包括：In this embodiment, the method may further include:
当所述HARQ-ACK发送模式确定为所述支持重传模式时，所述终端接 收基站发送的指示所述终端进行HARQ-ACK重传的下行控制信息，所述终端根据所述下行控制信息，确定是否进行HARQ-ACK重传。When the HARQ-ACK transmission mode is determined to be the support retransmission mode, the terminal is connected Receiving, by the base station, downlink control information indicating that the terminal performs HARQ-ACK retransmission, and the terminal determines, according to the downlink control information, whether to perform HARQ-ACK retransmission.
在本实施例中，所述终端接收所述基站发送的指示所述终端进行HARQ-ACK重传的下行控制信息，可包括以下至少之一：In this embodiment, the terminal receives the downlink control information that is sent by the base station and indicates that the terminal performs the HARQ-ACK retransmission, and may include at least one of the following:
所述终端接收在PHICH上发送的下行控制信息，所述的PHICH的资源根据承载所述HARQ-ACK的资源确定；The terminal receives downlink control information that is sent on the PHICH, and the resources of the PHICH are determined according to resources that carry the HARQ-ACK;
所述终端接收在PDCCH或者EPDCCH上发送的DCI。The terminal receives a DCI transmitted on a PDCCH or an EPDCCH.
在本实施例中，当所述终端接收到所述PHICH上的NACK时，所述终端可进行HARQ-ACK重传；In this embodiment, when the terminal receives the NACK on the PHICH, the terminal may perform HARQ-ACK retransmission;
当所述终端接收到的所述DCI中预设的控制域为预设的特定状态时，所述终端可进行HARQ-ACK重传。When the preset control domain in the DCI received by the terminal is a preset specific state, the terminal may perform HARQ-ACK retransmission.
在本实施例中，所述DCI中除了包括用于指示HARQ-ACK重传的控制域外，还可包括以下至少之一：In this embodiment, the DCI may include at least one of the following in addition to the control domain for indicating HARQ-ACK retransmission:
在所述HARQ-ACK重传时的资源指示控制域；a resource indication control domain at the time of the HARQ-ACK retransmission;
在所述HARQ-ACK重传时的传输功率控制域；a transmission power control field at the time of the HARQ-ACK retransmission;
在所述HARQ-ACK重传时的调制方式。Modulation mode at the time of HARQ-ACK retransmission.
在本实施例中，所述终端可采用专有的RNTI对所述DCI进行解扰，并可根据高层配置的索引信息获取与所述终端相关的HARQ-ACK重传信息。In this embodiment, the terminal may use the proprietary RNTI to descramble the DCI, and obtain the HARQ-ACK retransmission information related to the terminal according to the index information configured by the upper layer.
在本实施例中，当所述下行控制信息指示终端要进行HARQ-ACK重传时，所述终端可以在第三预设上行子帧上进行HARQ-ACK重传。In this embodiment, when the downlink control information indicates that the terminal is to perform HARQ-ACK retransmission, the terminal may perform HARQ-ACK retransmission on the third preset uplink subframe.
在本实施例中，可选地，当所述HARQ-ACK发送模式确定为支持重传模式时，所述终端在第二预设子帧之前没有接收到所述基站发送的与所述HARQ-ACK对应的下行重传数据包或新的数据包且所述终端前一次发送的HARQ-ACK信息中包含NACK时，所述终端可以在第三预设上行子帧上行HARQ-ACK重传。In this embodiment, optionally, when the HARQ-ACK transmission mode is determined to support the retransmission mode, the terminal does not receive the HARQ- sent by the base station before the second preset subframe. The terminal may perform uplink HARQ-ACK retransmission in the third preset uplink subframe when the downlink retransmission data packet or the new data packet corresponding to the ACK includes the NACK in the HARQ-ACK information sent by the terminal.
在本实施例中，所述终端在第三预设上行子帧上进行HARQ-ACK重传，可包括以下至少之一： In this embodiment, the terminal performs HARQ-ACK retransmission on the third preset uplink subframe, and may include at least one of the following:
当所述终端在所述第三预设上行子帧上没有PUSCH发送，或所述终端在所述第三预设子帧上有PUSCH发送且所述终端配置为允许PUCCH和PUSCH同传时，所述终端在所述第三预设子帧上采用预设的PUCCH资源进行HARQ-ACK重传，其中所述的第三预设上行子帧为根据所述下行控制信息确定的上行子帧，或与基站约定好的上行子帧，所述预设的PUCCH资源为根据所述下行控制信息确定的PUCCH资源，或高层配置的PUCCH资源；When the terminal does not transmit PUSCH on the third preset uplink subframe, or the terminal has PUSCH transmission on the third preset subframe, and the terminal is configured to allow PUCCH and PUSCH to transmit simultaneously, The terminal performs HARQ-ACK retransmission on the third preset subframe by using a preset PUCCH resource, where the third preset uplink subframe is an uplink subframe determined according to the downlink control information, Or the uplink subframe that is agreed with the base station, where the preset PUCCH resource is a PUCCH resource determined according to the downlink control information, or a PUCCH resource configured by a higher layer;
当所述终端在所述第三预设子帧上有PUSCH发送且所述终端配置为不允许PUCCH和PUSCH同传时，所述终端在所述第三预设子帧上在所述PUSCH上进行HARQ-ACK重传。When the terminal has PUSCH transmission on the third preset subframe, and the terminal is configured to not allow PUCCH and PUSCH to transmit simultaneously, the terminal is on the PUSCH in the third preset subframe. Perform HARQ-ACK retransmission.
在本实施例中，当所述HARQ-ACK发送模式确定为所述支持重传模式和所述重复发送模式的结合模式时，所述终端可在连续的上行子帧上采用高层配置的资源重复发送所述的HARQ-ACK，其中所述连续的上行子帧数可由高层配置，然后可根据HARQ-ACK发送模式为所述支持重传模式进行后续处理，其中，所述终端要发送HARQ-ACK时，都进行重复发送处理。In this embodiment, when the HARQ-ACK transmission mode is determined to be the combined mode of the retransmission mode and the repeated transmission mode, the terminal may adopt a resource repetition of a high-level configuration on consecutive uplink subframes. Transmitting the HARQ-ACK, where the consecutive uplink subframes are configurable by a higher layer, and then performing subsequent processing for the support retransmission mode according to a HARQ-ACK transmission mode, where the terminal sends a HARQ-ACK At the same time, the transmission process is repeated.
在本实施例中，可选地，当所述HARQ-ACK发送模式确定为所述支持重传模式和所述重复发送模式的结合模式时，所述终端根据与所述基站的约定，在进行HARQ-ACK重传时，重复发送的次数相对于前一次发送次数递增。In this embodiment, optionally, when the HARQ-ACK transmission mode is determined to be the combined mode of supporting the retransmission mode and the repeated transmission mode, the terminal is performing according to an agreement with the base station. When HARQ-ACK is retransmitted, the number of repeated transmissions is incremented relative to the previous number of transmissions.
在本实施例中，所述终端向基站发送HARQ-ACK前，可确定需要反馈的HARQ-ACK比特数以及反馈的HARQ-ACK比特序列。In this embodiment, before the terminal sends the HARQ-ACK to the base station, the number of HARQ-ACK bits that need to be fed back and the HARQ-ACK bit sequence that is fed back may be determined.
在本实施例中，所述确定需要反馈的HARQ-ACK比特数以及反馈的HARQ-ACK比特序列可包括：In this embodiment, the determining the number of HARQ-ACK bits that need to be fed back and the feedback HARQ-ACK bit sequence may include:
所述终端根据所述基站发送的DAI确定需要反馈的HARQ-ACK比特数以及反馈的HARQ-ACK比特序列。The terminal determines, according to the DAI sent by the base station, the number of HARQ-ACK bits that need to be fed back and the HARQ-ACK bit sequence that is fed back.
在本实施例中，所述DAI信息可为DCI中新增加的控制域或已有的控制域，且所述DAI信息在不同的DCI所表示的含义可以不同，其中所述不同的DCI可以指不同服务小区或子帧的DCI。In this embodiment, the DAI information may be a newly added control domain or an existing control domain in the DCI, and the meaning of the DAI information may be different in different DCIs, where the different DCI may refer to DCI for different serving cells or subframes.
在本实施例中，所述终端可根据与所述基站约定，调度的N个服务小区 中的前面N-m个服务小区的DCI中的DAI指示按照一定顺序截止到当前服务小区已经调度的服务小区的数量，调度的N个服务小区中的最后m个服务小区的DCI中的DAI指示当前子帧调度的服务小区总数；或者，最后m个服务小区的DCI中的DAI重复调度的第N-m个服务小区的DCI中的DAI；或者，最后m个服务小区的DCI中的DAI与调度的第N-m个服务小区的DCI的DAI具有预设的偏置值且都相同，其中，N和m均为正整数，m为基站与终端约定好的取值。In this embodiment, the terminal may schedule N serving cells according to an agreement with the base station. The DAI in the DCI of the preceding Nm serving cells indicates that the number of serving cells that have been scheduled by the current serving cell in a certain order is determined, and the DAI in the DCI of the last m serving cells in the scheduled N serving cells indicates the current sub- The total number of serving cells scheduled by the frame; or the DAI in the DCI of the Nm serving cells of the DAI repeatedly scheduled in the DCI of the last m serving cells; or the DAI in the DCI of the last m serving cells and the scheduled Nm The DAIs of the DCIs of the serving cells have preset offset values and are the same, where N and m are positive integers, and m is a good value agreed between the base station and the terminal.
本发明实施例还提供了一种计算机可读存储介质，存储有计算机可执行指令，所述计算机可执行指令被执行时实现上述应答信息的传输方法。The embodiment of the invention further provides a computer readable storage medium storing computer executable instructions, the method for transmitting the response information being implemented when the computer executable instructions are executed.
在本实施例中还提供了一种应答信息的传输装置，所述装置设置为实现上述实施例及可选实施方式，已经进行过说明的不再赘述。如以下所使用的，术语“模块”可以实现预定功能的软件和/或硬件的组合。尽管以下实施例所描述的装置可以以软件来实现，但是硬件，或者软件和硬件的组合的实现也是可能并被构想的。In this embodiment, a device for transmitting response information is provided, and the device is configured to implement the foregoing embodiments and optional embodiments, and details are not described herein. As used below, the term "module" may implement a combination of software and/or hardware of a predetermined function. Although the devices described in the following embodiments may be implemented in software, hardware, or a combination of software and hardware, is also possible and contemplated.
图6是根据本发明实施例的一种应答信息的传输装置的结构框图，位于基站中，如图6所示，所述装置包括：FIG. 6 is a structural block diagram of a device for transmitting response information according to an embodiment of the present invention. The device is located in a base station. As shown in FIG. 6, the device includes:
配置模块62，设置为：基站配置终端的混合自动请求重传应答消息HARQ-ACK的发送模式；The configuration module 62 is configured to: the base station configures a mode of the hybrid automatic request retransmission response message HARQ-ACK of the terminal;
接收模块64，设置为：基站接收所述终端依据所述发送模式发送的HARQ-ACK。The receiving module 64 is configured to: the base station receives the HARQ-ACK sent by the terminal according to the sending mode.
通过上述装置，基站配置终端的混合自动请求重传应答消息HARQ-ACK的发送模式，所述基站接收所述终端依据所述发送模式发送的HARQ-ACK，解决了不必要的PDSCH重传浪费下行资源的问题，提高了下行资源的利用率。Through the foregoing apparatus, the base station configures a hybrid automatic request retransmission response message (HARQ-ACK) transmission mode of the terminal, and the base station receives the HARQ-ACK sent by the terminal according to the transmission mode, and solves unnecessary PDSCH retransmission wastedown. The problem of resources has improved the utilization of downlink resources.
在本实施例中，所述HARQ-ACK的发送模式可包括以下至少之一：正常发送模式；重复发送模式；支持重传模式。In this embodiment, the transmission mode of the HARQ-ACK may include at least one of the following: a normal transmission mode; a repeated transmission mode; and a retransmission mode.
在本实施例中，所述配置模块可包括以下至少之一：In this embodiment, the configuration module may include at least one of the following:
第一配置单元，设置为：所述终端与所述基站约定默认模式为所述支持 重传模式；a first configuration unit, configured to: the terminal and the base station agree that a default mode is the support Retransmission mode
第二配置单元，设置为：所述基站通过高层信令的第一配置参数指示所述终端的发送模式为所述发送模式之一；a second configuration unit, configured to: indicate, by the base station, that a sending mode of the terminal is one of the sending modes by using a first configuration parameter of the high layer signaling;
第三配置单元，设置为：所述基站通过高层信令的第二配置参数指示所述支持重传模式；a third configuration unit, configured to: indicate, by the second base station, the support retransmission mode by using a second configuration parameter of the high layer signaling;
第四配置单元，设置为：所述基站通过高层信令的第三配置参数指示所述重复发送模式。And a fourth configuration unit, configured to: indicate, by the base station, the repeated transmission mode by using a third configuration parameter of the high layer signaling.
在本发明实施例中，还提供了一种基站，该基站包括上述任一项所述应答信息的传输装置。In the embodiment of the present invention, a base station is further provided, where the base station includes the transmission device of the response information according to any one of the foregoing.
图7是根据本发明实施例的另一种应答信息的传输装置的结构框图，位于终端中，如图7所示，所述装置包括：FIG. 7 is a structural block diagram of another apparatus for transmitting response information according to an embodiment of the present invention, which is located in a terminal. As shown in FIG. 7, the apparatus includes:
确定模块72，设置为：终端确定HARQ-ACK的发送模式；The determining module 72 is configured to: determine, by the terminal, a transmission mode of the HARQ-ACK;
发送模块74，设置为：所述终端依据基站配置的HARQ-ACK的发送模式向基站发送HARQ-ACK。The sending module 74 is configured to: send, by the terminal, a HARQ-ACK to the base station according to a transmission mode of the HARQ-ACK configured by the base station.
通过上述装置，终端确定HARQ-ACK的发送模式，所述终端依据所述发送模式向基站发送HARQ-ACK，解决了不必要的PDSCH重传浪费下行资源的问题，提高了下行资源的利用率。The terminal determines the transmission mode of the HARQ-ACK, and the terminal sends the HARQ-ACK to the base station according to the transmission mode, which solves the problem that the unnecessary PDSCH retransmission wastes the downlink resources and improves the utilization of the downlink resources.
在本实施例中，所述HARQ-ACK的发送模式可包括以下至少之一：正常发送模式；重复发送模式；支持重传模式。In this embodiment, the transmission mode of the HARQ-ACK may include at least one of the following: a normal transmission mode; a repeated transmission mode; and a retransmission mode.
在本实施例中，所述确定模块可包括以下至少之一：In this embodiment, the determining module may include at least one of the following:
第一确定单元，设置为：所述终端与所述基站约定默认模式为所述支持重传模式；a first determining unit, configured to: the terminal and the base station agree that a default mode is the support retransmission mode;
第二确定单元，设置为：所述基站通过高层信令的第一配置参数指示所述终端的发送模式为所述发送模式之一；a second determining unit, configured to: indicate, by the base station, that the sending mode of the terminal is one of the sending modes by using a first configuration parameter of the high layer signaling;
第三确定单元，设置为：所述基站通过高层信令的第二配置参数指示所述支持重传模式；a third determining unit, configured to: the base station indicates the support retransmission mode by using a second configuration parameter of the high layer signaling;
第四确定单元，设置为：所述基站通过高层信令的第三配置参数指示所 述重复发送模式。a fourth determining unit, configured to: indicate, by the base station, a third configuration parameter of the high layer signaling The repeat transmission mode is described.
在本发明实施例中，还提供了一种终端，该终端包括上述任一项所述应答信息的传输装置。In the embodiment of the present invention, a terminal is further provided, and the terminal includes the transmission device of the response information according to any one of the foregoing.
下面结合可选实施例对本发明实施例进行详细说明。The embodiments of the present invention are described in detail below in conjunction with the optional embodiments.
本可选实施例提供一种基站，配置终端的HARQ-ACK发送模式；接收终端发送的HARQ-ACK。The optional embodiment provides a base station, which configures a HARQ-ACK transmission mode of the terminal, and receives a HARQ-ACK sent by the terminal.
可选地，所述的HARQ-ACK发送模式包括至少之一：正常发送模式；重复发送模式；支持重传模式。Optionally, the HARQ-ACK transmission mode includes at least one of: a normal transmission mode; a repeated transmission mode; and a retransmission mode.
可选地，所述配置终端的HARQ-ACK发送模式，包括但不限于以下方式：Optionally, the HARQ-ACK sending mode of the configuration terminal includes, but is not limited to, the following manners:
与终端约定默认模式为支持重传模式；The default mode agreed with the terminal is to support the retransmission mode;
通过高层信令配置所述三种HARQ-ACK发送模式；The three HARQ-ACK transmission modes are configured by high layer signaling;
通过高层信令配置“支持重传模式”；Configure "support retransmission mode" through high-level signaling;
通过高层信令配置“重复发送模式”。The "repetitive transmission mode" is configured through high layer signaling.
可选地，所述“支持重传模式”可为新增加的配置参数，所述“重复发送模式”可为新增加的配置参数或现有的配置参数。Optionally, the “support retransmission mode” may be a newly added configuration parameter, and the “repeated transmission mode” may be a newly added configuration parameter or an existing configuration parameter.
可选地，当所述基站配置所述终端的HARQ-ACK发送模式为重复发送模式时，所述基站还需要配置HARQ-ACK重复发送的次数以及重复发送时所使用的资源。Optionally, when the base station configures the HARQ-ACK transmission mode of the terminal to be a repeat transmission mode, the base station further needs to configure the number of times the HARQ-ACK is repeatedly transmitted and the resources used when the transmission is repeated.
可选地，当所述基站配置所述终端的HARQ-ACK发送模式为支持重传模式时，所述基站发送指示所述终端进行HARQ-ACK重传的下行控制信息，包括但并不限于以下方式：Optionally, when the base station configures the HARQ-ACK transmission mode of the terminal to support the retransmission mode, the base station sends downlink control information indicating that the terminal performs HARQ-ACK retransmission, including but not limited to the following. the way:
所述基站通过在PHICH上的NACK来指示所述终端进行HARQ-ACK重传；The base station instructs the terminal to perform HARQ-ACK retransmission by using a NACK on the PHICH;
所述基站通过在PDCCH或者EPDCCH上发送的DCI来指示所述终端进行HARQ-ACK重传；The base station instructs the terminal to perform HARQ-ACK retransmission by using DCI transmitted on the PDCCH or the EPDCCH;
可选地，当所述基站通过在物理混合自动重传指示信道(Physical Hybrid  ARQ Indicator Channel，简称为PHICH)上的NACK来指示所述终端进行HARQ-ACK重传时，所述的PHICH的资源根据承载所述HARQ-ACK的资源确定。Optionally, when the base station automatically retransmits the indication channel by physical hybrid (Physical Hybrid The resource of the PHICH is determined according to the resource carrying the HARQ-ACK when the terminal performs the HARQ-ACK retransmission by the NACK on the ARQ Indicator Channel (PHICH).
可选地，当所述基站通过在物理下行控制信道(Physical Downlink Control Channel，简称为PDCCH)或者增强物理下行控制信道(Enhanced Physical Downlink Control Channel，简称为EPDCCH)上发送的DCI来指示所述终端进行HARQ-ACK重传时，该方法包括但不限于以下方式：Optionally, the base station indicates the terminal by using a DCI sent on a Physical Downlink Control Channel (PDCCH) or an Enhanced Physical Downlink Control Channel (EPDCCH). When performing HARQ-ACK retransmission, the method includes but is not limited to the following manners:
所述基站通过已有DCI的已有的控制域的特定状态来指示，其中所述的DCI已有的控制域的特定状态为现有协议未被使用的状态；The base station is indicated by a specific state of an existing control domain of the existing DCI, wherein the specific state of the existing control domain of the DCI is a state in which the existing protocol is not used;
所述基站通过一个专有的无线网络临时标识(Radio Network Temporary Identity简称为RNTI)对已有大小的DCI进行加扰，所述的专有RNTI用于指示采用所述RNTI加扰的DCI为指示终端进行HARQ-ACK重传的DCI。The base station scrambles the DCI of the existing size by using a proprietary Radio Network Temporary Identity (RNTI), where the dedicated RNTI is used to indicate that the DCI scrambled by the RNTI is used as an indication. The terminal performs DCI of HARQ-ACK retransmission.
可选地，所述的专有的RNTI通过高层信令配置给所述终端。Optionally, the dedicated RNTI is configured to the terminal by using high layer signaling.
可选地，所述DCI中除了包括用于指示HARQ-ACK重传的控制域外，还包括以下至少之一：Optionally, the DCI includes at least one of the following in addition to the control domain for indicating HARQ-ACK retransmission:
在所述HARQ-ACK重传时的资源指示控制域；a resource indication control domain at the time of the HARQ-ACK retransmission;
在所述HARQ-ACK重传时的传输功率控制域；a transmission power control field at the time of the HARQ-ACK retransmission;
在所述HARQ-ACK重传时的调制方式。Modulation mode at the time of HARQ-ACK retransmission.
可选地，当HARQ-ACK配置为只在一个PUCCH上发送时，所述DCI在主下行分量载波(分量载波也称服务小区)上发送。Optionally, when the HARQ-ACK is configured to be transmitted only on one PUCCH, the DCI is transmitted on a primary downlink component carrier (a component carrier, also called a serving cell).
可选地，当HARQ-ACK配置为在多个PUCCH上发送时，所述DCI在所述PUCCH服务小区组所对应的主分量载波上发送。Optionally, when the HARQ-ACK is configured to be sent on multiple PUCCHs, the DCI is sent on a primary component carrier corresponding to the PUCCH serving cell group.
可选地，当所述基站配置所述终端的HARQ-ACK发送模式为支持重传模式时，所述基站接收终端在第一预设子帧上第一次发送的HARQ-ACK，如果所述基站检测出所述终端在第一预设子帧上发送的HARQ-ACK传输有误，所述基站在第二预设子帧之前不发送与所述HARQ-ACK对应的下行重传数据包或新的数据包时，所述基站接收终端在第三预设子帧上的发送HARQ-ACK重传信息。 Optionally, when the base station configures the HARQ-ACK transmission mode of the terminal to support a retransmission mode, the base station receives a HARQ-ACK sent by the terminal for the first time in the first preset subframe, if The base station detects that the HARQ-ACK transmission sent by the terminal in the first preset subframe is incorrect, and the base station does not send the downlink retransmission data packet corresponding to the HARQ-ACK or before the second preset subframe. In the case of a new data packet, the base station receives the HARQ-ACK retransmission information transmitted by the terminal on the third preset subframe.
可选地，当所述基站同时配置了HARQ-ACK重复发送模式和HARQ-ACK重复发送模式使能时，所述基站与所述终端约定，在所述HARQ-ACK重传时，重复发送的次数相对于前一次发送次数递增。Optionally, when the base station is configured with the HARQ-ACK repeated transmission mode and the HARQ-ACK repeated transmission mode enabled, the base station and the terminal agree to repeat the sending when the HARQ-ACK is retransmitted. The number of times is incremented relative to the previous number of transmissions.
本实施例中，所述DAI信息可为DCI中新增加的控制域或已有的控制域，且DAI信息在不同的DCI所表示的含义可以不同，其中所述不同的DCI可以指不同服务小区或子帧的DCI。In this embodiment, the DAI information may be a newly added control domain or an existing control domain in the DCI, and the meanings of the DAI information may be different in different DCIs, where the different DCIs may refer to different serving cells. Or the DCI of the subframe.
在本实施例中，可选地，所述基站通过调度的N个服务小区中的前面N-m个服务小区的DCI中的DAI指示按照一定顺序截止到当前服务小区已经调度的服务小区的数量，调度的N个服务小区中的最后m个服务小区的DCI中的DAI指示当前子帧调度的服务小区总数；或者，最后m个服务小区的DCI中的DAI重复调度的第N-m个服务小区的DCI中的DAI；或者，最后m个服务小区的DCI中的DAI与调度的第N-m个服务小区的DCI的DAI具有预设的偏置值且都相同，其中，N和m均为正整数，m为基站与终端约定好的取值In this embodiment, optionally, the base station indicates, according to the DAI in the DCI of the preceding Nm serving cells in the scheduled N serving cells, that the number of serving cells that have been scheduled by the current serving cell is scheduled in a certain order, and is scheduled. The DAI in the DCI of the last m serving cells of the N serving cells indicates the total number of serving cells scheduled in the current subframe; or, in the DCI of the Nm serving cells in which the DAI of the last m serving cells is repeatedly scheduled. DAI; or, the DAI in the DCI of the last m serving cells and the DAI of the DCI of the scheduled Nm serving cells have preset offset values and are the same, where N and m are positive integers, and m is The base station and the terminal agree on a good value.
本可选实施例还提供一种终端，确定HARQ-ACK的发送模式；发送HARQ-ACK。The optional embodiment further provides a terminal, which determines a transmission mode of the HARQ-ACK, and sends a HARQ-ACK.
可选地，所述的HARQ-ACK发送模式包括以下至少之一：正常发送模式；重复发送模式；支持重传模式。Optionally, the HARQ-ACK transmission mode includes at least one of the following: a normal transmission mode; a repeated transmission mode; and a retransmission mode.
可选地，所述确定HARQ-ACK的发送模式，包括但不限于以下方式：Optionally, the determining a transmission mode of the HARQ-ACK includes but is not limited to the following manners:
与基站约定默认模式为支持重传模式；The default mode is agreed with the base station to support the retransmission mode;
根据高层信令确定HARQ-ACK的发送模式。The transmission mode of the HARQ-ACK is determined according to the high layer signaling.
可选地，当所述终端根据高层信令确定HARQ-ACK的发送模式时，该方法包括但并不限于以下方式之一：Optionally, when the terminal determines a transmission mode of the HARQ-ACK according to the high layer signaling, the method includes, but is not limited to, one of the following manners:
(1)根据高层信令确定HARQ-ACK的发送模式为上述三种模式之一；(1) determining, according to the high layer signaling, that the transmission mode of the HARQ-ACK is one of the foregoing three modes;
(2)当高层信令仅配置了支持重传的信息单元时，所述终端确定所述HARQ-ACK发送模式为支持重传模式；(2) when the high layer signaling only configures the information unit that supports retransmission, the terminal determines that the HARQ-ACK transmission mode is to support the retransmission mode;
当高层信令配置了仅重复发送的信息单元时，所述终端确定所述HARQ-ACK发送模式为重复发送模式； When the high layer signaling configures the information unit that is only repeatedly transmitted, the terminal determines that the HARQ-ACK transmission mode is a repeated transmission mode;
当高层信令同时配置了支持重传模式的信息单元和重复发送的信息单元时，所述终端确定所述HARQ-ACK发送模式为重复结合重传模式；When the high-level signaling simultaneously configures the information unit that supports the retransmission mode and the information element that is repeatedly transmitted, the terminal determines that the HARQ-ACK transmission mode is a repeated combined retransmission mode;
否则，所述终端确定所述HARQ-ACK发送模式为正常发送模式。Otherwise, the terminal determines that the HARQ-ACK transmission mode is a normal transmission mode.
可选地，所述“支持重传模式”可为新增加的配置参数，所述“重复发送模式”可为新增加的配置参数或现有的配置参数Optionally, the “support retransmission mode” may be a newly added configuration parameter, and the “repeated transmission mode” may be a newly added configuration parameter or an existing configuration parameter.
可选地，当所述HARQ-ACK发送模式确定为重复发送模式，所述终端可在连续的上行子帧上采用高层配置的资源重复发送所述的HARQ-ACK，其中所述连续的上行子帧数由高层配置。Optionally, when the HARQ-ACK transmission mode is determined to be a repeat transmission mode, the terminal may repeatedly send the HARQ-ACK by using a high-level configured resource on consecutive uplink subframes, where the consecutive uplink subframes The number of frames is configured by the upper layer.
可选地，当所述HARQ-ACK发送模式确定为支持重传模式时，所述终端可接收基站发送的指示所述终端进行HARQ-ACK重传的下行控制信息，所述终端可根据所述下行控制信息，确定是否进行HARQ-ACK重传。Optionally, when the HARQ-ACK transmission mode is determined to support the retransmission mode, the terminal may receive downlink control information that is sent by the base station to indicate that the terminal performs HARQ-ACK retransmission, and the terminal may be configured according to the Downlink control information to determine whether to perform HARQ-ACK retransmission.
可选地，所述终端接收基站发送的指示所述终端进行HARQ-ACK重传的下行控制信息，包括但并不限于以下方式：Optionally, the terminal receives downlink control information that is sent by the base station and indicates that the terminal performs HARQ-ACK retransmission, including but not limited to the following manners:
所述终端接收在PHICH上发送的下行控制信息，所述的PHICH的资源根据承载所述HARQ-ACK的资源确定；及/或，The terminal receives downlink control information that is sent on the PHICH, where resources of the PHICH are determined according to resources that carry the HARQ-ACK; and/or,
所述终端接收在PDCCH或者EPDCCH上发送的DCI。The terminal receives a DCI transmitted on a PDCCH or an EPDCCH.
可选地，当所述终端接收到所述PHICH上的NACK时，所述终端进行HARQ-ACK重传。Optionally, when the terminal receives the NACK on the PHICH, the terminal performs HARQ-ACK retransmission.
可选地，当所述终端接收到的所述DCI中预设的控制域为预设的特定状态时，所述终端进行HARQ-ACK重传。Optionally, when the preset control domain in the DCI received by the terminal is a preset specific state, the terminal performs HARQ-ACK retransmission.
可选地，所述DCI中除了包括用于指示HARQ-ACK重传的预设的控制域外，还包括以下至少之一：Optionally, the DCI includes at least one of the following: in addition to the preset control domain for indicating HARQ-ACK retransmission:
在所述HARQ-ACK重传时的资源指示控制域；a resource indication control domain at the time of the HARQ-ACK retransmission;
在所述HARQ-ACK重传时的传输功率控制域；a transmission power control field at the time of the HARQ-ACK retransmission;
在所述HARQ-ACK重传时的调制方式。Modulation mode at the time of HARQ-ACK retransmission.
可选地，所述终端采用专有的RNTI对所述的DCI进行解扰，并根据高层配置的索引信息获取与所述终端相关的HARQ-ACK重传信息。 Optionally, the terminal uses a proprietary RNTI to descramble the DCI, and obtains HARQ-ACK retransmission information related to the terminal according to the index information of the high layer configuration.
可选地，当所述下行控制信息指示终端要进行HARQ-ACK重传时，所述终端在第三预设上行子帧上进行HARQ-ACK重传。Optionally, when the downlink control information indicates that the terminal is to perform HARQ-ACK retransmission, the terminal performs HARQ-ACK retransmission on the third preset uplink subframe.
可选地，当所述HARQ-ACK发送模式确定为支持重传模式时，所述终端在第二预设子帧之前没有接收到基站发送的与所述HARQ-ACK对应的下行重传数据包或新的数据包且所述终端前一次发送的HARQ-ACK包含有NACK时，所述终端在第三预设上行子帧上行HARQ-ACK重传。Optionally, when the HARQ-ACK transmission mode is determined to support the retransmission mode, the terminal does not receive the downlink retransmission data packet corresponding to the HARQ-ACK sent by the base station before the second preset subframe. Or a new data packet, and the terminal sends a HARQ-ACK retransmission in the third preset uplink subframe when the HARQ-ACK sent by the terminal includes a NACK.
可选地，所述终端在第三预设上行子帧上进行HARQ-ACK重传，包括以下至少之一：Optionally, the terminal performs HARQ-ACK retransmission on the third preset uplink subframe, including at least one of the following:
当所述终端在所述第三预设上行子帧上没有PUSCH发送，或所述终端在所述第三预设子帧上有PUSCH发送且所述终端配置为允许PUCCH和PUSCH同传时，所述终端在所述第三预设子帧上采用预设的PUCCH资源进行HARQ-ACK重传，其中所述的第三预设上行子帧为根据所述下行控制信息确定的上行子帧，或与基站约定好的上行子帧，所述预设的PUCCH资源为根据所述下行控制信息确定的PUCCH资源，或高层配置的PUCCH资源；及/或When the terminal does not transmit PUSCH on the third preset uplink subframe, or the terminal has PUSCH transmission on the third preset subframe, and the terminal is configured to allow PUCCH and PUSCH to transmit simultaneously, The terminal performs HARQ-ACK retransmission on the third preset subframe by using a preset PUCCH resource, where the third preset uplink subframe is an uplink subframe determined according to the downlink control information, Or the uplink subframe that is agreed with the base station, where the preset PUCCH resource is a PUCCH resource determined according to the downlink control information, or a PUCCH resource configured by a higher layer; and/or
当所述终端在所述第三预设子帧上有PUSCH发送且所述终端配置为不允许PUCCH和PUSCH同传时，所述终端在所述第三预设子帧上在所述PUSCH上进行HARQ-ACK重传。When the terminal has PUSCH transmission on the third preset subframe, and the terminal is configured to not allow PUCCH and PUSCH to transmit simultaneously, the terminal is on the PUSCH in the third preset subframe. Perform HARQ-ACK retransmission.
可选地，当所述HARQ-ACK发送模式确定为重复结合重传发送模式时，所述终端在连续的上行子帧上采用高层配置的资源上重复发送所述的HARQ-ACK，其中所述连续的上行子帧数由高层配置；然后，根据HARQ-ACK发送模式为重传模式进行后续处理，所述终端要发送HARQ-ACK时，都进行重复发送处理。Optionally, when the HARQ-ACK transmission mode is determined to be a repeated combined retransmission transmission mode, the terminal repeatedly transmits the HARQ-ACK by using a high-level configuration resource on consecutive uplink subframes, where The number of consecutive uplink subframes is configured by the upper layer; then, the subsequent processing is performed in the retransmission mode according to the HARQ-ACK transmission mode, and the terminal performs the repeated transmission processing when the HARQ-ACK is to be transmitted.
可选地，当所述HARQ-ACK发送模式确定为所述支持重传模式和所述重复发送模式的结合模式时，所述终端根据与所述基站的约定，在每次HARQ-ACK重传时，重复发送的次数相对于前一次HARQ-ACK重复发送的次数递增。Optionally, when the HARQ-ACK transmission mode is determined as the combined mode of supporting the retransmission mode and the repeated transmission mode, the terminal retransmits each HARQ-ACK according to an agreement with the base station. The number of repeated transmissions is incremented relative to the number of repeated HARQ-ACK transmissions.
可选地，当HARQ-ACK发送模式确定为所述支持重传模式和所述重复 发送模式的结合模式时，所述终端根据与所述基站的约定，在进行HARQ-ACK重传时，重复发送的次数相对于前一次发送次数递增。Optionally, when the HARQ-ACK transmission mode is determined to be the support retransmission mode and the repetition In the combined mode of the transmission mode, the terminal increases the number of times of repeated transmission with respect to the previous transmission number when performing HARQ-ACK retransmission according to the agreement with the base station.
可选地，所述终端向基站发送HARQ-ACK前，确定需要反馈的HARQ-ACK比特数以及反馈的HARQ-ACK比特序列。Optionally, before the terminal sends the HARQ-ACK to the base station, the terminal determines the number of HARQ-ACK bits that need to be fed back and the HARQ-ACK bit sequence that is fed back.
可选地，所述终端根据所述基站发送的DAI确定需要反馈的HARQ-ACK比特数以及反馈的HARQ-ACK比特序列。Optionally, the terminal determines, according to the DAI sent by the base station, the number of HARQ-ACK bits that need to be fed back and the HARQ-ACK bit sequence that is fed back.
可选地，所述DAI信息为DCI中新增加的控制域或已有的控制域，且所述DAI信息在不同的DCI所表示的含义不同，其中所述不同的DCI指不同服务小区或子帧的DCI。Optionally, the DAI information is a newly added control domain or an existing control domain in the DCI, and the DAI information is different in meanings represented by different DCIs, where the different DCIs refer to different serving cells or sub- The DCI of the frame.
可选地，所述终端根据与所述基站约定，调度的N个服务小区中的前面N-m个服务小区的DCI中的DAI指示按照一定顺序截止到当前服务小区已经调度的服务小区的数量，调度的N个服务小区中的最后m个服务小区的DCI中的DAI指示当前子帧调度的服务小区总数；或者，最后m个服务小区的DCI中的DAI重复调度的第N-m个服务小区的DCI中的DAI；或者，最后m个服务小区的DCI中的DAI与调度的第N-m个服务小区的DCI的DAI具有预设的偏置值且都相同，其中，N和m均为正整数，m为基站与终端约定好的取值。Optionally, the terminal, according to the base station, agrees that the DAI in the DCI of the first Nm serving cells in the N scheduled serving cells is in a certain order, and the number of serving cells that have been scheduled by the current serving cell is scheduled. The DAI in the DCI of the last m serving cells of the N serving cells indicates the total number of serving cells scheduled in the current subframe; or, in the DCI of the Nm serving cells in which the DAI of the last m serving cells is repeatedly scheduled. DAI; or, the DAI in the DCI of the last m serving cells and the DAI of the DCI of the scheduled Nm serving cells have preset offset values and are the same, where N and m are positive integers, and m is The base station and the terminal agree on a good value.
可选实施例1：新PUCCH格式，以及相关说明示例Alternative Embodiment 1: New PUCCH format, and related description examples
在LTE后续版本的讨论中，增强的载波聚合中为了支持更多的载波聚合的HARQ-ACK反馈，需要引入一种新的PUCCH格式。图8是根据本发明可选实施例的一种候选的新的PUCCH格式的结构示意图，如图8所示，新的PUCCH格式能够支持更多HARQ-ACK的反馈，如图8所示的PUCCH格式，考虑采用QPSK调制，以及保证信道编码的码率小于等于0.5的情况下，最多可以支持144比特的反馈。由于支持的比特数比较多，对于大于22比特的HARQ-ACK反馈，需要增加CRC，以便基站侧可以检测到HARQ-ACK传输是否有误。现有的PUCCH格式不支持CRC的主要原因是现有PUCCH格式最多只能支持22比特的反馈，如果增加CRC，那么能够支持的有用的HARQ-ACK比特数就会变小，CRC占得开销比例过大，因而，现有的PUCCH格式是都不支持CRC的。 In the discussion of the subsequent versions of LTE, in order to support more carrier aggregation HARQ-ACK feedback in enhanced carrier aggregation, a new PUCCH format needs to be introduced. FIG. 8 is a schematic structural diagram of a candidate new PUCCH format according to an alternative embodiment of the present invention. As shown in FIG. 8, the new PUCCH format can support more HARQ-ACK feedback, such as the PUCCH shown in FIG. 8. The format, considering the use of QPSK modulation, and ensuring that the channel coding rate is less than or equal to 0.5, can support up to 144 bits of feedback. Since the number of supported bits is relatively large, for a HARQ-ACK feedback greater than 22 bits, it is necessary to increase the CRC so that the base station side can detect whether the HARQ-ACK transmission is incorrect. The main reason why the existing PUCCH format does not support CRC is that the existing PUCCH format can only support up to 22 bits of feedback. If the CRC is added, the number of useful HARQ-ACK bits that can be supported becomes smaller, and the CRC accounts for the overhead ratio. Too large, therefore, the existing PUCCH format does not support CRC.
在增加了CRC后，基站侧可以通过CRC来发现HARQ-ACK传输是否有误，相对于已有的PUCCH格式而言，HARQ-ACK的鲁棒性要好一些。但是，由于CRC只能发现错误，但是并不能确定哪些比特位发生了错误，因此，从基站考虑，为了保证***的可靠传输，当检测到CRC有误时，与HARQ-ACK对应的所有的PDSCH传输都需要重传，这样，对于已经正确传输的PDSCH而言是一种资源浪费，导致了PDSCH的不必要重传，影响频谱效率。图9是根据本发明可选实施例的PDSCH发送、HARQ-ACK发送以及PDSCH重传的示例示意图，如图9所示，在该示例中，基站在无线帧n的子帧0上发送PDSCH，终端接收无线帧n的子帧0上的PDSCH，并根据检测结果在无线帧n的子帧4上进行HARQ-ACK反馈；基站检测无线帧n的子帧4上的HARQ-ACK，根据CRC判断HARQ-ACK传输有误，由于基站并不能确定传输的HARQ-ACK哪里发生了错误，因而，基站在无线帧n的子帧8上，对上一次所有的PDSCH传输进行了重传。After the CRC is added, the base station side can use the CRC to find out whether the HARQ-ACK transmission is incorrect. Compared with the existing PUCCH format, the robustness of the HARQ-ACK is better. However, since the CRC can only find errors, it is not possible to determine which bits have errors. Therefore, in order to ensure reliable transmission of the system, in order to ensure reliable transmission of the system, all PDSCHs corresponding to the HARQ-ACK are detected from the base station. The transmission needs to be retransmitted, so that it is a waste of resources for the PDSCH that has been correctly transmitted, which leads to unnecessary retransmission of the PDSCH and affects spectrum efficiency. 9 is a schematic diagram showing an example of PDSCH transmission, HARQ-ACK transmission, and PDSCH retransmission according to an optional embodiment of the present invention. As shown in FIG. 9, in this example, a base station transmits a PDSCH on subframe 0 of a radio frame n, The terminal receives the PDSCH on the subframe 0 of the radio frame n, and performs HARQ-ACK feedback on the subframe 4 of the radio frame n according to the detection result; the base station detects the HARQ-ACK on the subframe 4 of the radio frame n, and judges according to the CRC The HARQ-ACK transmission is incorrect. Since the base station cannot determine where the transmitted HARQ-ACK has an error, the base station retransmits all the previous PDSCH transmissions on the subframe 8 of the radio frame n.
可选实施例2：发送模式的示例Alternative Embodiment 2: Example of Transmit Mode
终端的HARQ-ACK发送模式包括以下至少之一：The terminal's HARQ-ACK transmission mode includes at least one of the following:
正常发送模式Normal transmission mode
重复发送模式Repeated transmission mode
支持重传模式。Support for retransmission mode.
其中，正常发送模式下，终端只发送一次HARQ-ACK，基站根据接收到的HARQ-ACK，判断相应的PDSCH是否要重传。这是现有协议支持的默认HARQ-ACK发送模式，PUCCH格式1b联合信道选择以及PUCCH格式3都是默认采用这种HARQ-ACK发送模式。In the normal transmission mode, the terminal only sends the HARQ-ACK once, and the base station determines whether the corresponding PDSCH is to be retransmitted according to the received HARQ-ACK. This is the default HARQ-ACK transmission mode supported by the existing protocol. PUCCH format 1b joint channel selection and PUCCH format 3 all adopt this HARQ-ACK transmission mode by default.
重复发送模式，当PUCCH相关的高层参数配置“ackNackRepetition”这个配置参数时，表示重复发送模式使能，高层参数“ackNackRepetition”同时还配置了终端重复发送HARQ-ACK的次数“RepetitionFactor”，以及重复发送HARQ-ACK时所使用的PUCCH信道资源。当终端采用重复发送模式发送HARQ-ACK时，终端在连续的上行子帧上重复发送HARQ-ACK，基站接收多个上行子帧的HARQ-ACK后，确定PDSCH的重传。所述高层配置的IE 在现有协议上是用于PUCCH格式1a/1b的，在增强的载波聚合***中，对于新增加的PUCCH格式，可以考虑采用这个IE来配置新PUCCH格式的重复发送模式，也可以通过新增的配置参数来配置新PUCCH格式的重复发送模式。In the repeat transmission mode, when the configuration parameter of "ackNackRepetition" is configured in the high-level parameter of the PUCCH, the repeating transmission mode is enabled, and the high-level parameter "ackNackRepetition" is also configured with the number of times the terminal repeatedly transmits HARQ-ACK "RepetitionFactor", and the repeated transmission. PUCCH channel resources used in HARQ-ACK. When the terminal transmits the HARQ-ACK in the repeated transmission mode, the terminal repeatedly transmits the HARQ-ACK on the consecutive uplink subframes, and after receiving the HARQ-ACK of the multiple uplink subframes, the base station determines the retransmission of the PDSCH. The high-level configuration IE In the existing protocol, it is used for PUCCH format 1a/1b. In the enhanced carrier aggregation system, for the newly added PUCCH format, this IE may be considered to configure the repeated transmission mode of the new PUCCH format, or may be added. The configuration parameters are used to configure the repeating transmission mode of the new PUCCH format.
支持重传模式：终端在重传模式下，当收到相应的触发重传信令后，或在第二预设子帧之前没有收到与第一次发送的HARQ-ACK对应的下行重传数据包或新的数据包且所述终端前一次发送的HARQ-ACK包含有NACK时，终端在第三预设的子帧上对上一次发送的HARQ-ACK进行重传；其中所述的与第一次发送的HARQ-ACK对应的下行重传数据包或新的数据包可以指与首传PDSCH具有相同进程号的下行传输。其中，HARQ-ACK重传时可以在PUCCH上发送，也可以在PUSCH上发送，具体来说：The retransmission mode is supported: the terminal does not receive the downlink retransmission corresponding to the first transmitted HARQ-ACK after receiving the corresponding trigger retransmission signaling or before the second preset subframe. a data packet or a new data packet, and the HARQ-ACK sent by the terminal before the terminal includes a NACK, the terminal retransmits the last HARQ-ACK sent in the third preset subframe; The downlink retransmission data packet or the new data packet corresponding to the HARQ-ACK transmitted for the first time may refer to the downlink transmission having the same process number as the first transmission PDSCH. The HARQ-ACK may be sent on the PUCCH or may be sent on the PUSCH, specifically:
当所述终端在所述第三预设上行子帧上没有PUSCH发送，或所述终端在所述第三预设子帧上有PUSCH发送且所述终端配置为允许PUCCH和PUSCH同传时，所述终端在所述第三预设子帧上采用预设的PUCCH资源进行HARQ-ACK重传，其中所述的第三预设上行子帧可为根据所述下行控制信息确定的上行子帧，或者与终端约定好的上行子帧，所述预设的PUCCH资源可为根据所述下行控制信息确定的PUCCH资源，或高层配置的PUCCH资源；When the terminal does not transmit PUSCH on the third preset uplink subframe, or the terminal has PUSCH transmission on the third preset subframe, and the terminal is configured to allow PUCCH and PUSCH to transmit simultaneously, The terminal performs HARQ-ACK retransmission on the third preset subframe by using a preset PUCCH resource, where the third preset uplink subframe may be an uplink subframe determined according to the downlink control information. Or the uplink subframe that is agreed with the terminal, where the preset PUCCH resource may be a PUCCH resource determined according to the downlink control information, or a PUCCH resource configured by a higher layer;
当所述终端在所述第三预设子帧上有PUSCH发送且所述终端配置为不允许PUCCH和PUSCH同传时，所述终端可在所述第三预设子帧上在所述PUSCH上进行HARQ-ACK重传。When the terminal has PUSCH transmission on the third preset subframe and the terminal is configured to not allow PUCCH and PUSCH to transmit simultaneously, the terminal may be in the PUSCH on the third preset subframe. Perform HARQ-ACK retransmission on it.
重复结合重传发送模式：所述终端在连续的上行子帧上采用高层配置的资源重复发送所述的HARQ-ACK，其中所述连续的上行子帧数由高层配置；然后，根据HARQ-ACK发送模式为重传模式进行后续处理，所述终端要发送HARQ-ACK时，都进行重复发送处理。Repeating the retransmission transmission mode: the terminal repeatedly transmits the HARQ-ACK by using a resource configured by a higher layer on consecutive uplink subframes, where the consecutive uplink subframes are configured by a higher layer; and then, according to the HARQ-ACK The transmission mode is a retransmission mode for subsequent processing, and when the terminal sends a HARQ-ACK, the transmission process is repeated.
可选实施例3：基站配置发送模式的示例Alternative Embodiment 3: Example of Base Station Configuration Transmission Mode
基站配置终端的HARQ-ACK的发送模式，其中发送模式包括以下三种之一： The base station configures a HARQ-ACK transmission mode of the terminal, where the transmission mode includes one of the following three types:
正常发送模式Normal transmission mode
重复发送模式Repeated transmission mode
支持重传模式。Support for retransmission mode.
可选地，基站配置终端的HARQ-ACK发送模式，可以采用以下方式之一：Optionally, the base station configures the HARQ-ACK transmission mode of the terminal, and may adopt one of the following methods:
与基站约定默认模式为支持重传模式；The default mode is agreed with the base station to support the retransmission mode;
根据高层信令确定HARQ-ACK的发送模式。The transmission mode of the HARQ-ACK is determined according to the high layer signaling.
其中，当所述终端根据高层信令确定HARQ-ACK的发送模式时，所述终端的处理可包括但并不限于以下方式之一：Wherein, when the terminal determines the transmission mode of the HARQ-ACK according to the high layer signaling, the processing of the terminal may include, but is not limited to, one of the following manners:
(1)根据高层信令确定HARQ-ACK的发送模式为上述三种模式之一；(1) determining, according to the high layer signaling, that the transmission mode of the HARQ-ACK is one of the foregoing three modes;
(2)当高层信令仅配置了支持重传的信息单元时，所述终端确定所述HARQ-ACK发送模式为支持重传模式；(2) when the high layer signaling only configures the information unit that supports retransmission, the terminal determines that the HARQ-ACK transmission mode is to support the retransmission mode;
当高层信令仅配置了重复发送的信息单元时，所述终端确定所述HARQ-ACK发送模式为重复发送模式；When the high layer signaling only configures the repeatedly transmitted information unit, the terminal determines that the HARQ-ACK transmission mode is a repeated transmission mode;
当高层信令同时配置了支持重传模式的信息单元和重复发送的信息单元时，所述终端确定所述HARQ-ACK发送模式为重复结合重传模式；When the high-level signaling simultaneously configures the information unit that supports the retransmission mode and the information element that is repeatedly transmitted, the terminal determines that the HARQ-ACK transmission mode is a repeated combined retransmission mode;
否则，所述终端确定所述HARQ-ACK发送模式为正常发送模式。Otherwise, the terminal determines that the HARQ-ACK transmission mode is a normal transmission mode.
可选地，所述“支持重传模式”可为新增加的配置参数，所述“重复发送模式”可为现有的配置参数或新增加的配置参数。Optionally, the “support retransmission mode” may be a newly added configuration parameter, and the “repeated transmission mode” may be an existing configuration parameter or a newly added configuration parameter.
为了避免对现有终端的影响，基站可只与支持新的PUCCH格式的终端约定HARQ-ACK的发送模式为支持重传模式。对于支持新的PUCCH格式的终端而言，HARQ-ACK的发送模式可默认为支持重传模式。终端在第一次发送HARQ-ACK后，可检测下行控制信息，当所述下行控制信息触发了HARQ-ACK重传后，终端可在第三预设的上行子帧上对HARQ-ACK进行重传；或者终端在第一次发送HARQ-ACK后，在第二预设子帧之前没有收到与第一次发送的HARQ-ACK对应的下行重传数据包或新的数据包且所述终端前一次发送的HARQ-ACK包含有NACK时，终端可在第三预设的上行子 帧上对HARQ-ACK进行重传。In order to avoid the impact on the existing terminal, the base station may only agree with the terminal supporting the new PUCCH format that the transmission mode of the HARQ-ACK is to support the retransmission mode. For a terminal supporting the new PUCCH format, the transmission mode of the HARQ-ACK may default to support the retransmission mode. After the terminal sends the HARQ-ACK for the first time, the terminal may detect the downlink control information. After the downlink control information triggers the HARQ-ACK retransmission, the terminal may perform the HARQ-ACK on the third preset uplink subframe. After transmitting the HARQ-ACK for the first time, the terminal does not receive the downlink retransmission data packet or the new data packet corresponding to the first transmitted HARQ-ACK before the second preset subframe and the terminal When the previously sent HARQ-ACK contains a NACK, the terminal may be in the third preset uplink. The HARQ-ACK is retransmitted on the frame.
基站还可以通过高层信令配置HARQ-ACK发送模式为上述三种发送模式之一，比如可以通过2比特的高层信令，配置终端的HARQ-ACK发送模式。The base station can also configure the HARQ-ACK transmission mode to one of the foregoing three transmission modes by using the high layer signaling. For example, the HARQ-ACK transmission mode of the terminal can be configured by using 2-bit high-layer signaling.
或者，基站可以在高层信令参数PUCCH-Config中，增加一个用于支持HARQ-ACK重传的配置参数，把支持HARQ-ACK重传时的一些相关参数配置给终端。当基站在PUCCH-config中配置了这个IE后，UE进入HARQ-ACK支持重传模式。Alternatively, the base station may add a configuration parameter for supporting the HARQ-ACK retransmission in the higher layer signaling parameter PUCCH-Config, and configure some related parameters when the HARQ-ACK retransmission is supported to the terminal. After the base station configures this IE in the PUCCH-config, the UE enters the HARQ-ACK to support the retransmission mode.
所述的HARQ-ACK重传模式，可只针对HARQ-ACK传输时有添加CRC的场景，如当HARQ-ACK大于22比特时，对于其他情况，由于HARQ-ACK没有CRC，基站侧并不能确定HARQ-ACK传输是否有误，因而并不适用。The HARQ-ACK retransmission mode may be used only for the scenario where the CRC is added when the HARQ-ACK is transmitted. For example, when the HARQ-ACK is greater than 22 bits, for other cases, since the HARQ-ACK has no CRC, the base station side cannot determine. Whether the HARQ-ACK transmission is incorrect or not is not applicable.
可选实施例4：信令触发重传模式的示例Alternative Embodiment 4: Example of Signaling Trigger Retransmission Mode
当基站配置了终端的HARQ-ACK发送模式为支持重传模式后，基站对HARQ-ACK进行接收检测，当HARQ-ACK的CRC没有通过时，基站判断HARQ-ACK传输发生错误，此时，基站可以通过发送下行控制信息，通知终端进行HARQ-ACK重传。After the base station configures the HARQ-ACK transmission mode of the terminal to support the retransmission mode, the base station performs reception detection on the HARQ-ACK. When the CRC of the HARQ-ACK fails, the base station determines that the HARQ-ACK transmission error occurs. The terminal can be notified to perform HARQ-ACK retransmission by sending downlink control information.
基站通过发送下行控制信息通知终端进行HARQ-ACK重传，可以采用以下方式之一：The base station notifies the terminal to perform HARQ-ACK retransmission by sending downlink control information, and may adopt one of the following methods:
基站通过在PHICH上的NACK来指示终端进行HARQ-ACK重传；The base station instructs the terminal to perform HARQ-ACK retransmission by using a NACK on the PHICH;
基站通过在PDCCH或者EPDCCH上发送的DCI来指示终端进行HARQ-ACK重传。The base station instructs the terminal to perform HARQ-ACK retransmission through the DCI transmitted on the PDCCH or the EPDCCH.
当基站采用通过在PHICH上发送的NACK来指示终端进行HARQ-ACK重传时，基站在发送PHICH时所使用的资源可根据发送HARQ-ACK的PUCCH资源确定。当所述发送HARQ-ACK的PUCCH为如图8所示的新格式时，所述的PUCCH资源可包括所在的PRB(Physical Resource Block，物理资源块)索引以及DMRS(Demodulation Reference signal，解调参考信号)所使用的CS(Cyclic shift，循环移位)索引。那么基站发送在触发HARQ-ACK重传时所使用的PHICH资源，就可根据上述PRB索引和DMRS的CS索引来确定。 When the base station uses the NACK transmitted on the PHICH to instruct the terminal to perform HARQ-ACK retransmission, the resource used by the base station when transmitting the PHICH may be determined according to the PUCCH resource that transmits the HARQ-ACK. When the PUCCH that sends the HARQ-ACK is a new format as shown in FIG. 8, the PUCCH resource may include a PRB (Physical Resource Block) index and a DMRS (Demodulation Reference Signal). The CS (Cyclic shift) index used by the signal). Then, the base station sends the PHICH resource used when triggering the HARQ-ACK retransmission, and can be determined according to the foregoing PRB index and the CS index of the DMRS.
当基站采用通过在PDCCH或者EPDCCH上发送的DCI来指示终端进行HARQ-ACK重传时，可以采用如下方式之一：When the base station uses the DCI transmitted on the PDCCH or the EPDCCH to instruct the terminal to perform HARQ-ACK retransmission, one of the following methods may be adopted:
方式1：基站通过已有DCI的已有的控制域的特定状态来指示，其中所述的DCI已有的控制域的特定状态为现有协议未被使用的状态；Mode 1: The base station indicates by using a specific state of an existing control domain of the existing DCI, where the specific state of the existing control domain of the DCI is a state in which the existing protocol is not used;
方式2：基站通过一个专有的RNTI对已有大小的DCI进行加扰，所述的专有RNTI用于指示采用所述RNTI加扰的DCI为指示终端进行HARQ-ACK重传的DCI。Mode 2: The base station scrambles the DCI of the existing size by using a dedicated RNTI, where the dedicated RNTI is used to indicate that the DCI scrambled by the RNTI is a DCI indicating that the terminal performs HARQ-ACK retransmission.
对于方式1，基站可以通过DCI格式0/4来触发HARQ-ACK重传。对于DCI格式0/4，其中的资源分配控制域包含
Figure PCTCN2016084162-appb-000003
比特，其中
Figure PCTCN2016084162-appb-000004
为上行带宽所包含的资源块数，假设***带宽为20MHz，那么
Figure PCTCN2016084162-appb-000005
资源分配控制域有
Figure PCTCN2016084162-appb-000006
比特。而资源分配实际使用的状态只需要100×101/2＝5050个，但是13比特可以表示2^13＝8192个不同的状态，那么除了资源分配要使用的5050外的其余未被使用的状态，都可以用来指示所述DCI是用来触发HARQ-ACK重传的。同时，所述的DCI除了可以触发终端进行HARQ-ACK重传外，还可以指示重传时使用的PUCCH资源。PUCCH资源的指示方式，现有协议采用的其中一种方式是通过高层配置结合DCI动态指示的方式，也即通过高层配置多个PUCCH资源，然后在DCI里动态指示使用哪一个，具体地，可通过DCI中的TPC(Transmit Power Control，传输功率命令)来动态指示，此时DCI中的TPC可不用做传输功率调整。对于新的PUCCH格式，上述的资源指示方法可以沿用，基站可通过高层信令给终端配置多个新PUCCH资源，然后可通过DCI中的预设控制域来指示重传时使用的资源，所述预设的控制域可选地为TPC控制域。对于HARQ-ACK初传时，PUCCH资源可以是根据与下行传输相关的DCI中的TPC控制域来确定的，而对于HARQ-ACK重传，由于触发HARQ-ACK重传的DCI是与上行传输相关的DCI(DCI格式0/4是与上行传输相关的DCI)，而DCI中包含的控制信息，有些对于HARQ-ACK重传是不必要的，如UL索引(index)/DL DAI，这时候，可以把这些控制域重用为HARQ-ACK重传时的PUCCH资源指示域，而TPC控制域可以保留其原来的作用，用作传输功率的调整。采用这种方式，基站只要终端约定好资源分配控制域中的 某个或某些特定的状态用来表示触发HARQ-ACK重传即可，对标准化影响小。For mode 1, the base station can trigger HARQ-ACK retransmission by DCI format 0/4. For DCI format 0/4, where the resource allocation control field contains
Figure PCTCN2016084162-appb-000003
Bit, where
Figure PCTCN2016084162-appb-000004
For the number of resource blocks included in the upstream bandwidth, assuming the system bandwidth is 20 MHz, then
Figure PCTCN2016084162-appb-000005
Resource allocation control domain
Figure PCTCN2016084162-appb-000006
Bit. The actual state of resource allocation only needs 100×101/2=5050, but 13 bits can represent 2^13=8192 different states, then the remaining unused state except 5050 to be used for resource allocation, Both can be used to indicate that the DCI is used to trigger a HARQ-ACK retransmission. In addition, the DCI may trigger the terminal to perform HARQ-ACK retransmission, and may also indicate the PUCCH resource used in the retransmission. In the indication mode of the PUCCH resource, one of the methods adopted by the existing protocol is to combine the dynamic indication of the DCI through the high-level configuration, that is, to configure multiple PUCCH resources through the upper layer, and then dynamically indicate which one to use in the DCI, specifically, It is dynamically indicated by TPC (Transmit Power Control) in the DCI. At this time, the TPC in the DCI can be used without transmission power adjustment. For the new PUCCH format, the foregoing resource indication method may be used, and the base station may configure multiple new PUCCH resources for the terminal through the high layer signaling, and then may indicate the resources used in the retransmission through the preset control domain in the DCI. The preset control domain is optionally a TPC control domain. For the initial transmission of HARQ-ACK, the PUCCH resource may be determined according to the TPC control domain in the DCI related to the downlink transmission, and for the HARQ-ACK retransmission, the DCI triggered by the HARQ-ACK retransmission is related to the uplink transmission. DCI (DCI format 0/4 is DCI related to uplink transmission), and the control information contained in DCI is not necessary for HARQ-ACK retransmission, such as UL index (index) / DL DAI, this time, These control domains can be reused as the PUCCH resource indication field in the HARQ-ACK retransmission, and the TPC control domain can retain its original role and be used as an adjustment of the transmission power. In this way, the base station has little effect on the standardization as long as the terminal agrees that one or some specific states in the resource allocation control domain are used to indicate that the HARQ-ACK retransmission is triggered.
或者，当所述DCI中预设的控制域被设置为特定的用于指示终端进行HARQ-ACK重传的状态时，此时所述DCI的其余控制域可以被重新定义，被重新定义的控制域可包括以下至少之一：Or, when the preset control domain in the DCI is set to a specific state for indicating that the terminal performs HARQ-ACK retransmission, the remaining control domains of the DCI may be redefined, and the redefined control is performed. A domain can include at least one of the following:
在所述HARQ-ACK重传时的资源指示控制域；a resource indication control domain at the time of the HARQ-ACK retransmission;
在所述HARQ-ACK重传时的传输功率控制域；a transmission power control field at the time of the HARQ-ACK retransmission;
在所述HARQ-ACK重传时的调制方式。Modulation mode at the time of HARQ-ACK retransmission.
对于方式2，当终端配置了支持HARQ-ACK重传模式时，基站同时还给终端配置了专用于HARQ-ACK重传模式的RNTI，所述的RNTI与现有配置给终端的RNTI都不同。基站通过所述的RNTI，对DCI进行加扰，然后发送给终端，终端通过所述的RNTI对DCI进行解扰，获取相应的是否要进行HARQ-ACK重传的信息，从而确定是否对HARQ-ACK进行重传。为了减少终端的盲检测次数，所述的DCI的大小与现有的DCI大小可以相同。另外，考虑到DCI的开销问题，承载触发HARQ-ACK重传的DCI可以采用现有DCI格式中大小最小的，如DCI格式1C。所述的DCI中除了携带触发HARQ-ACK重传的指示信息外，还可以携带PUCCH信道资源指示信息，如1比特的HARQ-ACK重传指示，以及2比特的PUCCH信道资源指示。此外，考虑到DCI格式1C的大小要大于上述HARQ-ACK重传时所需要的信息，因而可以把多个终端的HARQ-ACK重传指示信息复用在一个DCI格式1C上发送，多个终端可共享同一个RNTI，不同终端可配置不同的索引，用于指示终端在哪里找到自己对应的HARQ-ACK重传指示信息，图10是根据本发明可选实施例的DCI设计的一个示意图。For the mode 2, when the terminal is configured to support the HARQ-ACK retransmission mode, the base station also configures the terminal with the RNTI dedicated to the HARQ-ACK retransmission mode, and the RNTI is different from the existing RNTI configured for the terminal. The base station scrambles the DCI by using the RNTI, and then sends the signal to the terminal, and the terminal performs descrambling on the DCI by using the RNTI to obtain information about whether to perform HARQ-ACK retransmission, so as to determine whether the HARQ- ACK is retransmitted. In order to reduce the number of blind detections of the terminal, the size of the DCI may be the same as the existing DCI size. In addition, considering the overhead of DCI, the DCI carrying the triggered HARQ-ACK retransmission can adopt the smallest size in the existing DCI format, such as DCI format 1C. The DCI may carry PUCCH channel resource indication information, such as a 1-bit HARQ-ACK retransmission indication and a 2-bit PUCCH channel resource indication, in addition to the indication information that triggers the HARQ-ACK retransmission. In addition, considering that the size of the DCI format 1C is larger than the information required for the HARQ-ACK retransmission described above, the HARQ-ACK retransmission indication information of the multiple terminals can be multiplexed and transmitted on one DCI format 1C, and multiple terminals are transmitted. The same RNTI can be shared, and different terminals can be configured with different indexes for indicating where the terminal finds its own corresponding HARQ-ACK retransmission indication information. FIG. 10 is a schematic diagram of a DCI design according to an alternative embodiment of the present invention.
图11是根据本发明可选实施例的PDSCH重传的一个示例示意图，如图11所示，支持HARQ-ACK重传后，PDSCH发送、HARQ-ACK发送以PDSCH重传的一个示例。在该示例中，11 is a schematic diagram showing an example of PDSCH retransmission according to an alternative embodiment of the present invention. As shown in FIG. 11, an example of PDSCH transmission and HARQ-ACK transmission with PDSCH retransmission after HARQ-ACK retransmission is supported. In this example,
1.基站在无线帧n的子帧0上发送PDSCH；1. The base station transmits the PDSCH on the subframe 0 of the radio frame n;
2.终端接收无线帧的子帧0上的PDSCH，并根据检测结果在无线帧n 的子帧4上进行HARQ-ACK反馈；2. The terminal receives the PDSCH on subframe 0 of the radio frame, and according to the detection result in the radio frame n Performing HARQ-ACK feedback on subframe 4;
3.基站检测无线帧n的子帧4上的HARQ-ACK，根据CRC判断HARQ-ACK传输有误，由于基站配置了支持HARQ-ACK重传模式，因此，基站在无线帧n的子帧8上发送触发HARQ-ACK重传的下行控制信息，其中所述的下行控制信息为本实施例描述的方式之一；3. The base station detects the HARQ-ACK on the subframe 4 of the radio frame n, and determines that the HARQ-ACK transmission is incorrect according to the CRC. Since the base station is configured to support the HARQ-ACK retransmission mode, the base station is in the subframe 8 of the radio frame n. The downlink control information that triggers the HARQ-ACK retransmission is sent, where the downlink control information is one of the modes described in the embodiment;
4.终端接收到基站在无线帧n的子帧8上发送的触发HARQ-ACK重传的下行控制信息后，确定需要进行HARQ-ACK重传，则终端将在无线帧n+1的子帧2上对上一次发送的HARQ-ACK进行重传；4. After receiving the downlink control information of the HARQ-ACK retransmission sent by the base station on the subframe 8 of the radio frame n, the terminal determines that the HARQ-ACK retransmission needs to be performed, and the terminal will be in the subframe of the radio frame n+1. 2 retransmitting the last HARQ-ACK sent;
5.基站接收终端在无线帧n+1子帧2上的HARQ-ACK重传，基站还可以联合HARQ-ACK的初传与重传，经过联合检测后判断CRC通过，此时基站获取PDSCH传输的HARQ-ACK反馈，在无线帧n+1的子帧6上对HARQ-ACK反馈为NACK的PDSCH进行重传即可。5. The base station receives the HARQ-ACK retransmission of the terminal in the radio frame n+1 subframe 2, and the base station can also jointly initiate the initial transmission and retransmission of the HARQ-ACK, and after the joint detection, judges that the CRC passes, and the base station acquires the PDSCH transmission. The HARQ-ACK feedback may be performed on the subframe 6 of the radio frame n+1 to retransmit the PDSCH whose HARQ-ACK is fed back to the NACK.
这种方案相对于可选实施例1而言，可以避免不必要的PDSCH重传，节省了资源，提高了频谱效率。这种方案对于时延不敏感的业务尤为适用。Compared with the optional embodiment 1, this scheme can avoid unnecessary PDSCH retransmission, save resources, and improve spectrum efficiency. This kind of scheme is especially suitable for services that are not sensitive to delay.
需要注意的是，图11给出的示例中，由于下行HARQ采用的是异步HARQ，基站发送触发HARQ-ACK重传的下行控制信息的子帧没有限定在无线帧n的子帧8，在子帧8以及其后的子帧均可，相应地，终端进行HARQ-ACK重传的子帧可根据基站触发HARQ-ACK重传的下行控制信息所在的子帧来确定，假设基站触发HARQ-ACK重传的下行控制信息的子帧为x，则终端进行HARQ-ACK重传的子帧可为x+K1，其中所述的K为基站与终端好的值，K1可选地取4。同理，由于下行是异步HARQ，基站进行PDSCH重传的子帧也没有限定在无线帧n+1的子帧6上，只要在终端发送HARQ-ACK的子帧后K2个子帧上发送即可，K2可选地取4。It should be noted that, in the example shown in FIG. 11, since the downlink HARQ adopts asynchronous HARQ, the subframe in which the base station sends the downlink control information for triggering the HARQ-ACK retransmission is not limited to the subframe 8 of the radio frame n, in the sub-frame. The frame 8 and the subsequent subframes may be, and correspondingly, the subframe in which the terminal performs HARQ-ACK retransmission may be determined according to the subframe in which the downlink control information of the base station triggering the HARQ-ACK retransmission is determined, and the base station is triggered to trigger the HARQ-ACK. The subframe of the retransmitted downlink control information is x, and the subframe in which the terminal performs HARQ-ACK retransmission may be x+K1, where the K is a good value of the base station and the terminal, and K1 optionally takes 4. Similarly, since the downlink is asynchronous HARQ, the subframe in which the base station performs PDSCH retransmission is not limited to the subframe 6 of the radio frame n+1, and may be transmitted on the K2 subframes after the terminal transmits the HARQ-ACK subframe. , K2 optionally takes 4.
可选实施例5：不发送新包或重传包来约定重传模式的示例Alternative Embodiment 5: Example of not transmitting a new packet or retransmitting a packet to stipulate a retransmission mode
当基站配置了终端的HARQ-ACK发送模式为支持重传模式时，基站对终端在第一预设子帧发送的HARQ-ACK进行接收检测，当HARQ-ACK的CRC没有通过时，基站判断HARQ-ACK传输发生错误，此时基站在第二预设子帧之前不发送与所述HARQ-ACK对应的下行重传数据包或新的数据包； When the base station configures the HARQ-ACK transmission mode of the terminal to support the retransmission mode, the base station performs reception detection on the HARQ-ACK sent by the terminal in the first preset subframe, and when the CRC of the HARQ-ACK fails, the base station determines the HARQ. An error occurs in the ACK transmission. At this time, the base station does not send the downlink retransmission data packet or the new data packet corresponding to the HARQ-ACK before the second preset subframe.
对于终端侧，由于在第二预设子帧前没有收到所述HARQ-ACK对应的下行重传数据包或新的数据包，此时，可包括两种场景：For the terminal side, since the downlink retransmission data packet or the new data packet corresponding to the HARQ-ACK is not received before the second preset subframe, two scenarios may be included:
第一种场景是终端接收的PDSCH全部正确，基站也正确接收了终端发送的HARQ-ACK，而基站没有再针对所述终端的数据，因此，所述基站不会再对所述终端发送任何信号，对于这种情况，如果终端上一次发送的HARQ-ACK不包含NACK的话，终端也无需进行任何操作；The first scenario is that the PDSCH received by the terminal is all correct, and the base station also correctly receives the HARQ-ACK sent by the terminal, and the base station does not re-use the data of the terminal, therefore, the base station does not send any signal to the terminal again. For this case, if the last HARQ-ACK sent by the terminal does not include a NACK, the terminal does not need to perform any operations;
第二种场景是终端接收的PDSCH有误，也即上一次发送的HARQ-ACK包含NACK，终端在等待基站进行PDSCH重传，而此时由于终端在第二预设子帧前没有收到所述HARQ-ACK对应的下行重传数据包或新的数据包，终端根据约定知道基站侧判断接收的HARQ-ACK传输有误，因此，终端可按照约定，在第三预设子帧上重复发送所述HARQ-ACK；基站可接收终端在第三预设子帧上的发送HARQ-ACK重传信息；其中所述第三子帧与第一子帧的间隔可为基站与终端约定好的，可选地取值为8(个子帧)，所述第二预设子帧可选地取值为第三预设子帧的前一个子帧。The second scenario is that the PDSCH received by the terminal is incorrect, that is, the last HARQ-ACK sent includes the NACK, and the terminal is waiting for the base station to perform the PDSCH retransmission, and the terminal does not receive the second preset subframe. For the downlink retransmission data packet or the new data packet corresponding to the HARQ-ACK, the terminal knows that the base station side determines that the received HARQ-ACK transmission is incorrect according to the convention. Therefore, the terminal may repeatedly send the third preset subframe according to the convention. The HARQ-ACK; the base station may receive the HARQ-ACK retransmission information sent by the terminal on the third preset subframe; wherein the interval between the third subframe and the first subframe may be agreed by the base station and the terminal, Optionally, the value is 8 (subframes), and the second preset subframe is optionally taken as the previous subframe of the third preset subframe.
图12是根据本发明可选实施例的不发送新包或重传包来约定重传模式的示例示意图，如图12所示，在该示例中：12 is a diagram showing an example of an appointment retransmission mode without transmitting a new packet or a retransmission packet, as shown in FIG. 12, in this example, in accordance with an alternative embodiment of the present invention:
1.基站在无线帧n的子帧0上发送PDSCH；1. The base station transmits the PDSCH on the subframe 0 of the radio frame n;
2.终端接收无线帧n的子帧0的PDSCH，在无线帧n的子帧4上发送与所述PDSCH对应的HARQ-ACK；2. The terminal receives the PDSCH of the subframe 0 of the radio frame n, and transmits the HARQ-ACK corresponding to the PDSCH on the subframe 4 of the radio frame n;
3.基站接收终端在无线帧n的子帧4上发送的HARQ-ACK，假设检测结果CRC有误，基站判断所述HARQ-ACK传输有误；基站在无线帧n的子帧8到无线帧n+1的子帧1上均不发送与所述HARQ-ACK对应的下行重传数据包或新的数据包；这里假设第二预设子帧为无线帧n+1的子帧#1。3. The base station receives the HARQ-ACK transmitted by the terminal on the subframe 4 of the radio frame n, assuming that the detection result CRC is incorrect, the base station determines that the HARQ-ACK transmission is incorrect; the base station is in the subframe 8 of the radio frame n to the radio frame. The downlink retransmission data packet or the new data packet corresponding to the HARQ-ACK is not transmitted on the subframe 1 of n+1; it is assumed here that the second preset subframe is the subframe #1 of the radio frame n+1.
4.终端由于接收不到基站在无线帧n的子帧8到无线帧n+1的子帧1上发送的与所述HARQ-ACK对应的下行重传数据包或新的数据包，终端在无线帧n+1的子帧2上重新发送所述的HARQ-ACK；4. The terminal is not receiving the downlink retransmission data packet or the new data packet corresponding to the HARQ-ACK sent by the base station in the subframe 8 of the radio frame n to the subframe 1 of the radio frame n+1. Retransmitting the HARQ-ACK on subframe 2 of the radio frame n+1;
5.基站接收终端在无线帧n+1子帧2上的HARQ-ACK重传，基站还可以联合HARQ-ACK的初传与重传，经过联合检测后判断CRC通过，此时基 站获取PDSCH传输的HARQ-ACK反馈，在无线帧n+1的子帧6上对HARQ-ACK反馈为NACK的PDSCH进行重传即可。5. The base station receives the HARQ-ACK retransmission of the terminal on the radio frame n+1 subframe 2, and the base station can also jointly initiate the initial transmission and retransmission of the HARQ-ACK, and after the joint detection, judges that the CRC passes, and the base is determined. The station acquires the HARQ-ACK feedback of the PDSCH transmission, and retransmits the PDSCH whose HARQ-ACK is fed back to the NACK in the subframe 6 of the radio frame n+1.
这种方案，基站与终端约定好，在第一次发送HARQ-ACK后，如果终端在预设的时间段内没有收到基站发送的与第一次发送的HARQ-ACK对应的下行重传数据包或新的数据包，则终端在预设的子帧上进行HARQ-ACK重传。比如约定在第一次发送HARQ-ACK后的8微秒(8个子帧)都没有收到与第一次发送的HARQ-ACK对应的下行重传数据包或新的数据包，则终端可在8个子帧后重复发送HARQ-ACK，其中所述的与第一次发送的HARQ-ACK对应的下行重传数据包或新的数据包可以指与首传PDSCH具有相同进程号的下行传输。In this scheme, the base station and the terminal agree that after the first HARQ-ACK is sent, if the terminal does not receive the downlink retransmission data corresponding to the first HARQ-ACK sent by the base station within the preset time period. For a packet or a new data packet, the terminal performs HARQ-ACK retransmission on the preset subframe. For example, it is agreed that the 8 microseconds (8 subframes) after the first HARQ-ACK is sent does not receive the downlink retransmission data packet or the new data packet corresponding to the first HARQ-ACK, and the terminal can The HARQ-ACK is repeatedly transmitted after the 8 subframes, where the downlink retransmission data packet or the new data packet corresponding to the first transmission HARQ-ACK may refer to the downlink transmission having the same process number as the first transmission PDSCH.
另外，如果所述基站在所述第三预设子帧上没有接收到终端发送的HARQ-ACK重传信息，则表明终端正确接收了PDSCH，只是HARQ-ACK传输过程中发生了错误，因此基站可以认为上一次的PDSCH终端接收正确，可以开始新的数据包传输。In addition, if the base station does not receive the HARQ-ACK retransmission information sent by the terminal on the third preset subframe, it indicates that the terminal correctly receives the PDSCH, but an error occurs during the HARQ-ACK transmission, so the base station It can be considered that the last PDSCH terminal reception is correct and a new data packet transmission can be started.
可选实施例6：Alternative Embodiment 6:
图13是根据本发明可选实施例的基站配置了终端的HARQ-ACK发送模式为重复结合重传模式时，终端基站处理过程的一个示例示意图，如图13所示，在所述示例中：FIG. 13 is a schematic diagram showing an example of a processing procedure of a terminal base station when a base station configures a HARQ-ACK transmission mode of a terminal to be in a repeated combined retransmission mode according to an alternative embodiment of the present invention, as shown in FIG. 13, in the example:
1.基站在无线帧n的子帧0上发送PDSCH；1. The base station transmits the PDSCH on the subframe 0 of the radio frame n;
2.终端接收无线帧n的子帧0的PDSCH，在无线帧n的子帧4上发送与所述PDSCH对应的HARQ-ACK；由于HARQ-ACK重复发送模式使能，同时假设重复因子为2，那么终端在无线帧n的子帧5上重复发送子帧4发送的HARQ-ACK；2. The terminal receives the PDSCH of the subframe 0 of the radio frame n, and transmits the HARQ-ACK corresponding to the PDSCH on the subframe 4 of the radio frame n; the HARQ-ACK repeat transmission mode is enabled, and the repetition factor is assumed to be 2 , the terminal repeatedly transmits the HARQ-ACK sent by the subframe 4 on the subframe 5 of the radio frame n;
3.基站接收终端在无线帧n的子帧4和子帧5上发送的HARQ-ACK，假设检测结果CRC有误，则基站判断所述HARQ-ACK传输有误；由于基站配置了支持HARQ-ACK重传模式，因此，基站在无线帧n的子帧9上发送触发HARQ-ACK重传的下行控制信息，其中所述的下行控制信息为实施例4描述的方式之一； 3. The base station receives the HARQ-ACK sent by the terminal on the subframe 4 and the subframe 5 of the radio frame n, and if the detection result CRC is incorrect, the base station determines that the HARQ-ACK transmission is incorrect; since the base station is configured to support the HARQ-ACK The retransmission mode, the base station sends the downlink control information for triggering the HARQ-ACK retransmission on the subframe 9 of the radio frame n, wherein the downlink control information is one of the modes described in Embodiment 4;
4.终端接收到终端在无线帧n的子帧9上发送的触发HARQ-ACK重传的下行控制信息后，确定需要进行HARQ-ACK重传，则终端将在无线帧n+1的子帧3上对上一次发送的HARQ-ACK进行重传；同时，由于终端的HARQ-ACK重复发送模式也使能，因此，终端在无线帧n+1的子帧4上重复发送子帧3发送的HARQ-ACK；4. After receiving the downlink control information of the HARQ-ACK retransmission transmitted by the terminal on the subframe 9 of the radio frame n, determining that the HARQ-ACK retransmission needs to be performed, the terminal will be in the subframe of the radio frame n+1. 3, retransmitting the last transmitted HARQ-ACK; meanwhile, since the terminal's HARQ-ACK repeat transmission mode is also enabled, the terminal repeatedly transmits the subframe 3 transmission on the subframe 4 of the radio frame n+1. HARQ-ACK;
5.基站接收终端在无线帧n+1子帧3和子帧4上的HARQ-ACK重传，基站还可以联合HARQ-ACK的初传与重传，经过联合检测后判断CRC通过，此时基站获取PDSCH传输的HARQ-ACK反馈，在无线帧n+1的子帧8上对HARQ-ACK反馈为NACK的PDSCH进行重传即可。5. The base station receives the HARQ-ACK retransmission of the terminal in the radio frame n+1 subframe 3 and the subframe 4, and the base station can also cooperate with the initial transmission and retransmission of the HARQ-ACK, and after the joint detection, judges that the CRC passes, and the base station at this time The HARQ-ACK feedback of the PDSCH transmission is obtained, and the PDSCH with the HARQ-ACK feedback NACK is retransmitted on the subframe 8 of the radio frame n+1.
可选实施例7：Alternative Embodiment 7:
图14是根据本发明可选实施例的基站配置了终端的HARQ-ACK发送模式为重复结合重传模式时，终端基站处理过程的另一个示例示意图，如图14所示，给出了基站配置了终端的HARQ-ACK发送模式为重复结合重传模式时，终端基站处理过程的一个示例，在该示例中，HARQ-ACK重传是，重复发送的次数相对于前一次HARQ-ACK重复发送次数递增，这里可选的递增次数为1：FIG. 14 is another schematic diagram of a process performed by a base station when a base station configures a HARQ-ACK transmission mode of a terminal to be in a repeated combined retransmission mode according to an alternative embodiment of the present invention, and FIG. 14 shows a base station configuration. An example of the processing procedure of the terminal base station when the HARQ-ACK transmission mode of the terminal is the repeated combined retransmission mode. In this example, the HARQ-ACK retransmission is the number of repeated transmissions compared to the previous HARQ-ACK repeated transmission times. Increment, the number of increments that can be selected here is 1:
1.基站在无线帧n的子帧0上发送PDSCH；1. The base station transmits the PDSCH on the subframe 0 of the radio frame n;
2.终端接收无线帧n的子帧0的PDSCH，在无线帧n的子帧4上发送与所述PDSCH对应的HARQ-ACK；由于HARQ-ACK重复发送模式使能，同时假设重复因子为2，那么终端在无线帧n的子帧5上重复发送子帧4发送的HARQ-ACK；2. The terminal receives the PDSCH of the subframe 0 of the radio frame n, and transmits the HARQ-ACK corresponding to the PDSCH on the subframe 4 of the radio frame n; the HARQ-ACK repeat transmission mode is enabled, and the repetition factor is assumed to be 2 , the terminal repeatedly transmits the HARQ-ACK sent by the subframe 4 on the subframe 5 of the radio frame n;
3.基站接收终端在无线帧n的子帧4和子帧5上发送的HARQ-ACK，假设检测结果CRC有误，基站判断所述HARQ-ACK传输有误；由于基站配置了支持HARQ-ACK重传模式，因此，基站在无线帧n的子帧9上发送触发HARQ-ACK重传的下行控制信息，其中所述的下行控制信息为实施例4描述的方式之一；3. The base station receives the HARQ-ACK sent by the terminal on the subframe 4 and the subframe 5 of the radio frame n, and assumes that the CRC of the detection result is incorrect, the base station determines that the HARQ-ACK transmission is incorrect; and the base station is configured to support the HARQ-ACK. In the transmission mode, the base station sends the downlink control information that triggers the HARQ-ACK retransmission on the subframe 9 of the radio frame n, where the downlink control information is one of the modes described in Embodiment 4;
4.终端接收到基站在无线帧n的子帧9上发送的触发HARQ-ACK重传的下行控制信息后，确定需要进行HARQ-ACK重传，则终端将在无线帧n+1 的子帧3上对上一次发送的HARQ-ACK进行重传；同时，由于终端的HARQ-ACK重复发送模式也使能，同时，终端与基站约定，每次HARQ-ACK重传时，HARQ-ACK重复发送的次数相对前一次重复发送要增加1次，因此，终端在无线帧n+1的子帧4和子帧5上重复发送子帧3发送的HARQ-ACK；4. After receiving the downlink control information of the HARQ-ACK retransmission transmitted by the base station on the subframe 9 of the radio frame n, the terminal determines that HARQ-ACK retransmission needs to be performed, and the terminal will be in the radio frame n+1. In the subframe 3, the HARQ-ACK transmitted last time is retransmitted; at the same time, the HARQ-ACK repeat transmission mode of the terminal is also enabled, and the terminal and the base station agree that each HARQ-ACK retransmission, HARQ- The number of times the ACK is repeatedly transmitted is increased by one time compared to the previous repeated transmission. Therefore, the terminal repeatedly transmits the HARQ-ACK transmitted in the subframe 3 on the subframe 4 and the subframe 5 of the radio frame n+1;
5.基站接收终端在无线帧n+1子帧3、4、5上的HARQ-ACK重传，基站还可以联合HARQ-ACK的初传与重传，经过联合检测后判断CRC通过，此时基站获取PDSCH传输的HARQ-ACK反馈，在无线帧n+1的子帧9上对HARQ-ACK反馈为NACK的PDSCH进行重传即可。5. The base station receives the HARQ-ACK retransmission of the terminal in the radio frame n+1 subframes 3, 4, and 5, and the base station can also perform the initial transmission and retransmission of the HARQ-ACK, and after the joint detection, judges that the CRC passes. The base station acquires the HARQ-ACK feedback of the PDSCH transmission, and retransmits the PDSCH whose HARQ-ACK is fed back to the NACK in the subframe 9 of the radio frame n+1.
可选实施例8：Alternative Embodiment 8:
终端发送HARQ-ACK前，需要确定HARQ-ACK的比特数以及HARQ-ACK比特序列。一种确定HARQ-ACK比特数和比特序列的方式是基于配置的服务小区数、传输模式来确定，对于TDD***，还需要根据配置的下行参考配置来确定一个上行子帧需要反馈的下行子帧数。这种根据配置的服务小区数，子帧数以及传输模式来确定HARQ-ACK反馈比特数的方式，当配置的服务小区数/子帧比较多，而实际调度的服务小区/子帧数相对比较少的时候，会导致需要反馈大量的HARQ-ACK，而且反馈的大量HARQ-ACK中有很多是无用的，这样不但浪费了终端的发送功率，还会影响基站接收HARQ-ACK的性能。因此，一种改进的方案是根据调度的服务小区数/子帧数来确定反馈的HARQ-ACK比特数以及HARQ-ACK比特序列。为了支持根据调度的服务小区数/子帧数来确定反馈的HARQ-ACK比特数以及HARQ-ACK比特序列，避免基站与终端对于发送的HARQ-ACK有不一样的理解，需要引入相应的机制来解决由于终端漏检导致的终端基站理解不一致的问题。Before the terminal transmits the HARQ-ACK, it is necessary to determine the number of bits of the HARQ-ACK and the HARQ-ACK bit sequence. A method for determining the number of the HARQ-ACK bits and the bit sequence is determined based on the configured number of serving cells and the transmission mode. For the TDD system, the downlink subframe to be fed back in an uplink subframe needs to be determined according to the configured downlink reference configuration. number. The method for determining the number of HARQ-ACK feedback bits according to the configured number of serving cells, the number of subframes, and the transmission mode, when the number of configured serving cells/subframes is relatively large, and the number of actually scheduled serving cells/subframes is relatively compared. When there are few, it will cause a large amount of HARQ-ACK to be fed back, and many of the large number of HARQ-ACKs that are fed back are useless, which not only wastes the transmission power of the terminal, but also affects the performance of the base station receiving HARQ-ACK. Therefore, an improved solution is to determine the number of HARQ-ACK bits to be fed back and the HARQ-ACK bit sequence according to the number of reserved serving cells/subframes. In order to support the number of HARQ-ACK bits and the HARQ-ACK bit sequence to be fed back according to the number of reserved serving cells/subframes, to avoid the base station and the terminal have different understandings of the transmitted HARQ-ACK, it is necessary to introduce a corresponding mechanism. Solve the problem that the terminal base station understands inconsistency due to terminal missed detection.
为此，基站可以在与PDSCH传输相关的DCI中携带下行分配索引(DAI)信息，用于指示终端关于下行PDSCH的调度情况，可选地，基站与终端约定，所述的DAI在不同DCI中所表示的含义不同，其中所述不同的DCI指不同服务小区或子帧的DCI。例如：To this end, the base station may carry downlink allocation index (DAI) information in the DCI related to the PDSCH transmission, and is used to indicate the scheduling situation of the terminal regarding the downlink PDSCH. Optionally, the base station and the terminal agree that the DAI is in different DCIs. The meanings indicated are different, wherein the different DCI refers to the DCI of different serving cells or subframes. E.g:
基站可通过调度的N个服务小区中的前面N-m个服务小区的DCI中的DAI指示按照一定顺序截止到当前服务小区已经调度的服务小区的数量(累 计值DAI)，调度的N个服务小区中的最后m个服务小区的DCI中的DAI指示当前子帧调度的服务小区总数(总数DAI)；或者，The base station may indicate the number of serving cells that have been scheduled by the current serving cell in a certain order by the DAI in the DCI of the preceding N-m serving cells in the scheduled N serving cells (tired DAI), the DAI in the DCI of the last m serving cells of the scheduled N serving cells indicates the total number of serving cells scheduled for the current subframe (total DAI); or
最后m个服务小区的DCI中的DAI重复调度的第N-m个服务小区的DCI中的DAI；或者，The DAI in the DCI of the N-mth serving cell in which the DAI in the last m serving cells is repeatedly scheduled; or
最后m个服务小区的DCI中的DAI与调度的第N-m个服务小区的DCI的DAI具有预设的偏置值且都相同，其中，N和m均为正整数，m为基站与终端约定好的取值。The DAI in the DCI of the last m serving cells and the DAI of the DCI of the scheduled Nm serving cells have preset offset values and are the same, where N and m are positive integers, and m is a good agreement between the base station and the terminal. The value.
其中m的取值可根据DAI控制域的比特数来确定，如果DAI为2比特，那么m的可选地取值为4。这样做的原因是假定不考虑连续(按照一定的顺序)丢失4个PDSCH或表示SPS(semil-static scheduling，半静态调度，简称SPS)释放的(E)PDCCH的情况，这样，终端也可以识别出其中的丢失情况。The value of m can be determined according to the number of bits in the DAI control field. If the DAI is 2 bits, the value of m is optionally 4. The reason for this is that it is assumed that the loss of 4 PDSCHs or (ES) PDCCHs released by SPS (sequi-static scheduling, SPS) is not considered continuously (in a certain order), so that the terminal can also recognize Out of the loss.
DAI的取值与对应的调度的PDSCH/SPS释放(release)(E)PDCCH的数量的对应关系如表2所示。The correspondence between the value of DAI and the number of corresponding scheduled PDSCH/SPS release (E) PDCCHs is as shown in Table 2.
表2Table 2
Figure PCTCN2016084162-appb-000007
Figure PCTCN2016084162-appb-000007
根据上面的对应关系，以及调度情况，当前面N-m个服务小区的DCI中的DAI指示按照一定顺序截止到当前服务小区已经调度的服务小区的数量(累计值DAI)，最后m个服务小区的DCI中的DAI指示当前子帧调度的服务小区总数(总数DAI)时，可以得到如表3所示的DAI取值，从图16可以看出，当终端在最后5(m+1，这里m等于4)个没有发生丢失时，最后5个接收到的DAI的值是相同的，因此，可以根据这个来判断最后5个是否有 丢失：只要最后接收到的不是连续5个相同的DAI值，则可以判断最后5个中有丢失，但是终端无法确定是哪一个，因此，此时终端在反馈HARQ-ACK时，需要把最后5个HARQ-ACK比特对应的状态置为NACK。如果终端接收到最后5个相同的DAI，则表示最后5个没有丢失，则终端可以根据检测结果，确定最后5个HARQ-ACK比特对应的ACK/NACK状态。对于其他的HARQ-ACK比特位的状态，可根据累计计数器以及PDSCH的检测结果，确定其相应的ACK/NACK状态。According to the above correspondence, and the scheduling situation, the DAI in the DCI of the current Nm serving cells indicates the number of serving cells that have been scheduled by the current serving cell in a certain order (accumulated value DAI), and the DCI of the last m serving cells. When the DAI in the current subframe indicates the total number of serving cells (total DAI) scheduled in the current subframe, the value of DAI as shown in Table 3 can be obtained. As can be seen from FIG. 16, when the terminal is at the last 5 (m+1, where m is equal to 4) When no loss occurs, the values of the last 5 received DAIs are the same, so you can judge whether the last 5 are based on this. Loss: As long as the last 5 DAI values received are not consecutive, it can be judged that there is a loss in the last 5, but the terminal cannot determine which one. Therefore, the terminal needs to put the last 5 when feeding back HARQ-ACK. The state corresponding to the HARQ-ACK bits is set to NACK. If the terminal receives the last five identical DAIs, it indicates that the last five are not lost, and the terminal may determine the ACK/NACK state corresponding to the last five HARQ-ACK bits according to the detection result. For the status of other HARQ-ACK bits, the corresponding ACK/NACK status may be determined according to the accumulated counter and the detection result of the PDSCH.
表3table 3
Figure PCTCN2016084162-appb-000008
Figure PCTCN2016084162-appb-000008
图15是根据本发明可选实施例的DAI第一个示意图，如图15所示，在该示意图中，假设基站给某终端配置了32个服务小区，在子帧n上调度了29个服务小区，调度情况如图15所示。对于图15中每个服务小区的DAI取值，根据表2所示的对应关系，可以确定其相应的调度的PDSCH/SPS释放PDCCH的数量。15 is a first schematic diagram of a DAI according to an alternative embodiment of the present invention, as shown in FIG. 15, in which a base station is assumed to have 32 serving cells configured for a terminal, and 29 services are scheduled on a subframe n. The cell, scheduling situation is shown in Figure 15. For the DAI value of each serving cell in FIG. 15, according to the correspondence shown in Table 2, the number of corresponding scheduled PDSCH/SPS release PDCCHs may be determined.
对于终端，如表3所示，当终端接收到所有调度的29个服务小区上发送的PDSCH或者表示SPS释放的(E)PDCCH时，终端可根据最后接收到的5个连续的“00”表示总数的DAI，其中有4个是表示总数的DAI，倒数第五个是表示累计的DAI，终端根据上述接收情况，可以确定需要反馈的 HARQ-ACK比特数为29，终端可根据前面的表示累计的DAI确定对应的HARQ-ACK比特位的ACK/NACK状态，对于最后4个HARQ-ACK比特，可根据最后检测的4个PDSCH或者表示SPS释放的(E)PDCCH，确定对应的ACK/NACK状态。For the terminal, as shown in Table 3, when the terminal receives the PDSCH transmitted on all the scheduled 29 serving cells or the (E)PDCCH indicating the SPS release, the terminal may indicate according to the last 5 consecutive "00" received. The total number of DAIs, 4 of which are DAIs representing the total number, and the fifth last is the accumulated DAI. The terminal can determine the need for feedback according to the above receiving situation. The HARQ-ACK bit number is 29, and the terminal may determine the ACK/NACK state of the corresponding HARQ-ACK bit according to the DAI accumulated by the previous indication. For the last 4 HARQ-ACK bits, according to the last detected 4 PDSCH or representation The (E)PDCCH released by the SPS determines the corresponding ACK/NACK state.
对于终端，图16是根据本发明可选实施例的DAI第二个示意图，图17是根据本发明可选实施例的DAI第三个示意图，如图16和图17所示，当终端如果在最后没有接收到连续5个的“00”的话，比如只接收到4个连续的“00”，则终端可以判断最后5个调度发生了一个丢失，但是终端不能确定丢失了哪一个，如终端无法区分是如图16所示的丢失情况，还是如图17所示的丢失情况，此时，终端根据接收到的最后4个“00”DAI以及根据连续4个“00”之前的表示累计值的DAI，可以确定需要反馈的HARQ-ACK比特数为29，终端可根据前面的表示累计的计数器确定对应的HARQ-ACK比特位的ACK/NACK状态，对于最后5个HARQ-ACK状态，可置为NACK。For a terminal, FIG. 16 is a second schematic diagram of a DAI according to an alternative embodiment of the present invention, and FIG. 17 is a third schematic diagram of a DAI according to an alternative embodiment of the present invention, as shown in FIG. 16 and FIG. Finally, if five consecutive "00"s are received, for example, only four consecutive "00"s are received, the terminal can judge that one of the last five schedules has been lost, but the terminal cannot determine which one is lost, such as the terminal cannot. The distinction is the loss situation as shown in Figure 16, or the loss situation as shown in Figure 17, at this time, the terminal according to the last 4 "00" DAIs received and the accumulated values according to the previous 4 "00" The DAI can determine that the number of HARQ-ACK bits that need to be fed back is 29. The terminal can determine the ACK/NACK status of the corresponding HARQ-ACK bit according to the previous accumulated counter, and can be set to the last five HARQ-ACK states. NACK.
终端根据所述DAI确定对应的HARQ-ACK比特数以及比特序列的过程可包括：The process of determining, by the DAI, the corresponding HARQ-ACK bit number and the bit sequence according to the DAI may include:
当终端收到第一个取值为“00”的DAI时，终端判断这是基站调度的第一个有相应(E)PDCCH的PDSCH或表示SPS释放的(E)PDCCH，同时将对所述PDSCH解调的ACK/NACK状态放在HARQ-ACK比特序列的第一位，如果收到的是表示SPS释放的(E)PDCCH，则将比特序列的第一位置为“ACK”；When the terminal receives the first DAI whose value is "00", the terminal determines that this is the first PDSCH with the corresponding (E)PDCCH or the (E)PDCCH indicating the SPS release, which is scheduled by the base station. The ACK/NACK state of the PDSCH demodulation is placed in the first bit of the HARQ-ACK bit sequence, and if the (E)PDCCH indicating the SPS release is received, the first position of the bit sequence is “ACK”;
当终端收到第一个取值为“01”的DAI时，终端判断这是基站调度的第二个有相应(E)PDCCH的PDSCH或表示SPS释放的(E)PDCCH，同时将对所述PDSCH解调的ACK/NACK状态放在HARQ-ACK比特序列的第二位，如果收到的是表示SPS释放的(E)PDCCH，则将比特序列的第二位置为“ACK”；When the terminal receives the first DAI with the value of “01”, the terminal determines that this is the second PDSCH with the corresponding (E)PDCCH or the (E)PDCCH indicating the SPS release, and the The ACK/NACK state of the PDSCH demodulation is placed in the second bit of the HARQ-ACK bit sequence, and if the (E)PDCCH indicating the SPS release is received, the second position of the bit sequence is “ACK”;
当终端收到第一个取值为“10”的DAI时，终端判断这是基站调度的第三个有相应(E)PDCCH的PDSCH或表示SPS释放的(E)PDCCH，同时将对所述PDSCH解调的ACK/NACK状态放在HARQ-ACK比特序列的第三位，如果收到的是表示SPS释放的(E)PDCCH，则将比特序列的第三位置为“ACK”；When the terminal receives the first DAI with the value of “10”, the terminal determines that this is the third PDSCH with the corresponding (E)PDCCH or the (E)PDCCH indicating the SPS release, and the The ACK/NACK state of the PDSCH demodulation is placed in the third bit of the HARQ-ACK bit sequence, and if the (E)PDCCH indicating the SPS release is received, the third position of the bit sequence is “ACK”;
当终端收到第一个取值为“11”的DAI时，终端判断这是基站调度的第四个有相应(E)PDCCH的PDSCH或表示SPS释放的(E)PDCCH，同时将对所述 PDSCH解调的ACK/NACK状态放在HARQ-ACK比特序列的第四位，如果收到的是表示SPS释放的(E)PDCCH，则将比特序列的第四位置为“ACK”；When the terminal receives the first DAI whose value is "11", the terminal determines that this is the fourth PDSCH with the corresponding (E)PDCCH or the (E)PDCCH indicating the SPS release, which is scheduled by the base station. The ACK/NACK state of the PDSCH demodulation is placed in the fourth bit of the HARQ-ACK bit sequence, and if the (E)PDCCH indicating the SPS release is received, the fourth position of the bit sequence is “ACK”;
当终端收到第二个取值为“00”的DAI时，终端判断这是基站调度的第五个有相应(E)PDCCH的PDSCH或表示SPS释放的(E)PDCCH，同时将对所述PDSCH解调的ACK/NACK状态放在HARQ-ACK比特序列的第五位，如果收到的是表示SPS释放的(E)PDCCH，则将比特序列的第五位置为“ACK”；When the terminal receives the second DAI whose value is “00”, the terminal determines that the fifth PDSCH with the corresponding (E)PDCCH or the (E)PDCCH indicating the SPS release is scheduled by the base station, and the The ACK/NACK state of the PDSCH demodulation is placed in the fifth bit of the HARQ-ACK bit sequence, and if the (E)PDCCH indicating the SPS release is received, the fifth position of the bit sequence is "ACK";
当终端收到第二个取值为“01”的DAI时，终端判断这是基站调度的第六个有相应(E)PDCCH的PDSCH或表示SPS释放的(E)PDCCH，同时将对所述PDSCH解调的ACK/NACK状态放在HARQ-ACK比特序列的第六位，如果收到的是表示SPS释放的(E)PDCCH，则将比特序列的第六位置为“ACK”；When the terminal receives the second DAI with the value of “01”, the terminal determines that this is the sixth PDSCH with the corresponding (E)PDCCH or the (E)PDCCH indicating the SPS release, and the The ACK/NACK state of the PDSCH demodulation is placed in the sixth bit of the HARQ-ACK bit sequence, and if the (E)PDCCH indicating the SPS release is received, the sixth position of the bit sequence is “ACK”;
当终端收到第二个取值为“10”的DAI时，终端判断这是基站调度的第七个有相应(E)PDCCH的PDSCH或表示SPS释放的(E)PDCCH，同时将对所述PDSCH解调的ACK/NACK状态放在HARQ-ACK比特序列的第七位，如果收到的是表示SPS释放的(E)PDCCH，则将比特序列的第七位置为“ACK”；When the terminal receives the second DAI with the value of “10”, the terminal determines that this is the seventh PDSCH with the corresponding (E)PDCCH or the (E)PDCCH indicating the SPS release, and the The ACK/NACK state of the PDSCH demodulation is placed in the seventh bit of the HARQ-ACK bit sequence, and if the (E)PDCCH indicating the SPS release is received, the seventh position of the bit sequence is "ACK";
当终端收到第二个取值为“11”的DAI时，终端判断这是基站调度的第八个有相应(E)PDCCH的PDSCH或表示SPS释放的(E)PDCCH，同时将对所述PDSCH解调的ACK/NACK状态放在HARQ-ACK比特序列的第八位，如果收到的是表示SPS释放的(E)PDCCH，则将比特序列的第八位置为“ACK”；When the terminal receives the second DAI whose value is "11", the terminal determines that this is the eighth PDSCH with the corresponding (E)PDCCH or the (E)PDCCH indicating the SPS release, which is scheduled by the base station. The ACK/NACK state of the PDSCH demodulation is placed in the eighth bit of the HARQ-ACK bit sequence, and if the (E)PDCCH indicating the SPS release is received, the eighth position of the bit sequence is "ACK";
如此类推；And so on;
对于接收到最后五个相同DAI的情况，如在图15的实施例中，接收到最后5个DAI的取值都为“00”，根据前面的接收情况可以判断倒数第五个DAI表示已经调度了25个有相应(E)PDCCH的PDSCH或表示SPS释放的(E)PDCCH，然后对于最后4个表示总数的DAI，取值为“00”，查表2可以判断出总共调度了29个有相应(E)PDCCH的PDSCH或表示SPS释放的PDCCH。如果当前子帧还有发送SPS的服务小区，则对于所述发送SPS的服务小区，可根据载波索引先后顺序，将SPS服务小区的PDSCH对应的ACK/NACK状态映射到HARQ-ACK比特序列的最后，得到如图18所示的示意图，该示意图中，假设接收到的PDSCH都正确解调，因此HARQ-ACK状态均为ACK，图中用“A”来表示，而对于漏检的服务小区，图中用“X”来表示， 其对应的HARQ-ACK状态被置为NACK，图中用“N”来表示，此外，在该示意图中，由于最后接收到5个相同的DAI值，因而终端判断最后5个有相应(E)PDCCH对应的PDSCH或表示SPS释放的PDCCH没有发生丢失，因而相应的HARQ-ACK状态，可根据对PDSCH的解调结果来确定，这里假定PDSCH都解调正确。如果接收情况是如图19所示，终端最后只接收到4个相同的DAI，则终端可以判断出最后5个有相应(E)PDCCH对应的PDSCH或表示SPS释放的PDCCH有一个发生丢失，但是不知道哪个丢失，因而终端可将最后5个(不考虑SPS)的HARQ-ACK状态置为NACK。如果当前子帧有发送SPS的服务小区，则处理可如前所述。For the case of receiving the last five identical DAIs, as in the embodiment of FIG. 15, the values of the last five DAIs received are all "00", and according to the previous reception situation, it can be determined that the fifth last DAI indicates that the DAI has been scheduled. 25 PDSCHs with corresponding (E) PDCCH or (E) PDCCHs indicating SPS release, and then for the last 4 DAIs representing the total number, the value is "00", and Table 2 can determine that a total of 29 are scheduled. Corresponding (E) PDSCH of the PDCCH or PDCCH indicating SPS release. If the current subframe has a serving cell that sends the SPS, the ACK/NACK state corresponding to the PDSCH of the SPS serving cell may be mapped to the last of the HARQ-ACK bit sequence according to the carrier index sequence for the serving cell that sends the SPS. A schematic diagram is shown in FIG. 18, in which the received PDSCH is correctly demodulated, so the HARQ-ACK status is ACK, which is represented by "A" in the figure, and for the missed service cell, The figure is represented by "X", The corresponding HARQ-ACK state is set to NACK, which is represented by "N" in the figure. In addition, in the diagram, since five identical DAI values are finally received, the terminal judges that the last five have corresponding (E) The PDSCH corresponding to the PDCCH or the PDCCH indicating the release of the SPS is not lost, and thus the corresponding HARQ-ACK state can be determined according to the demodulation result of the PDSCH, and it is assumed here that the PDSCH is demodulated correctly. If the receiving situation is as shown in FIG. 19, the terminal only receives 4 identical DAIs at the end, the terminal may determine that the last 5 PDSCHs corresponding to the corresponding (E) PDCCH or the PDCCH indicating the SPS release are lost, but I don't know which one is lost, so the terminal can set the last 5 (without considering SPS) HARQ-ACK status to NACK. If the current subframe has a serving cell that transmits the SPS, the process can be as previously described.
根据上面的对应关系，以及调度情况，当前面N-m个服务小区的DCI中的DAI指示按照一定顺序截止到当前服务小区已经调度的服务小区的数量(累计值DAI)，最后m个服务小区的DCI中的DAI重复调度的第N-m个服务小区的DCI中的DAI时，这里假设m＝3，当终端在最后4(m+1，这里m等于4)个没有发生丢失时，最后4个接收到的DAI的值是相同的，因此，可以根据这个来判断最后4个是否有丢失：只要最后接收到的不是连续4个相同的DAI值，则可以判断最后4个中有丢失，但是终端无法确定是哪一个，因此，此时终端在反馈HARQ-ACK时，需要把最后4个HARQ-ACK比特对应的状态置为NACK。如果接收到最后4个相同的DAI，则表示最后4个没有丢失，则可以根据检测结果，确定最后4个HARQ-ACK比特对应的ACK/NACK状态。对于其他的HARQ-ACK比特位的状态，可根据累计计数器以及PDSCH的检测结果，确定其相应的ACK/NACK状态。According to the above correspondence, and the scheduling situation, the DAI in the DCI of the current Nm serving cells indicates the number of serving cells that have been scheduled by the current serving cell in a certain order (accumulated value DAI), and the DCI of the last m serving cells. When the DAI in the DAI repeatedly schedules the DAI in the DCI of the Nmth serving cell, it is assumed here that m=3, when the terminal is in the last 4 (m+1, where m is equal to 4), no loss occurs, and the last 4 are received. The value of the DAI is the same, so you can judge whether the last 4 are lost according to this: as long as the last received 4 identical DAI values are not found, you can judge that there are losses in the last 4, but the terminal cannot determine Which is the reason, therefore, when the terminal feeds back the HARQ-ACK, the state corresponding to the last four HARQ-ACK bits needs to be set to NACK. If the last 4 identical DAIs are received, it means that the last 4 are not lost, and the ACK/NACK state corresponding to the last 4 HARQ-ACK bits may be determined according to the detection result. For the status of other HARQ-ACK bits, the corresponding ACK/NACK status may be determined according to the accumulated counter and the detection result of the PDSCH.
终端根据所述DAI确定HARQ-ACK比特数，可包括：根据前面接收到的调度情况以及最后接收到的连续相同的DAI的取值，确定反馈的HARQ-ACK比特数，如图20所示，最后接收到的连4个相同的DAI的取值为“00”，通过查表2判断出已经调度了25个，然后由于与基站约定最后3个服务小区的DAI与前一个相同，因而终端判断出有相应(E)PDCCH的PDSCH或表示SPS释放的PDCCH的数量为25+3＝28个。由于最后接收到4个相同的DAI值，因而终端判断最后4个有相应(E)PDCCH对应的PDSCH或表示SPS释放的PDCCH没有发生丢失，因而相应的HARQ-ACK状态，可根据对 PDSCH的解调结果来确定，这里假定PDSCH都解调正确。如果接收情况是如图21所示，终端最后只接收到3个相同的DAI，则终端可以判断出最后4个有相应(E)PDCCH对应的PDSCH或表示SPS释放的PDCCH有一个发生丢失，但是不知道哪个丢失，因而终端可将最后4个(不考虑SPS)的HARQ-ACK状态置为NACK。如果当前子帧有发送SPS的服务小区，则处理可如前所述。The determining, by the terminal, the number of the HARQ-ACK bits according to the DAI may include: determining the number of HARQ-ACK bits to be fed back according to the previously received scheduling situation and the value of the consecutively received consecutive DAIs, as shown in FIG. 20, The value of the last four identical DAIs received is “00”. It is judged that the 25 have been scheduled by looking up Table 2, and then the terminal judges that the DAI of the last three serving cells is the same as the previous one. The number of PDSCHs with corresponding (E)PDCCH or PDCCHs indicating SPS release is 25+3=28. Since the last four DAI values are received, the terminal determines that the last four PDSCHs corresponding to the (E)PDCCH or the PDCCHs that indicate the SPS release are not lost, and thus the corresponding HARQ-ACK state can be determined according to the pair. The demodulation result of the PDSCH is determined, and it is assumed here that the PDSCH is demodulated correctly. If the receiving situation is as shown in FIG. 21, the terminal finally receives only three identical DAIs, the terminal may determine that the last four PDSCHs corresponding to the corresponding (E)PDCCH or the PDCCH indicating the SPS release are lost, but I don't know which one is lost, so the terminal can set the last 4 (regardless of SPS) HARQ-ACK status to NACK. If the current subframe has a serving cell that transmits the SPS, the process can be as previously described.
通过以上的实施方式的描述，本领域的技术人员可以清楚地了解到根据上述实施例的方法可借助软件加必需的通用硬件平台的方式来实现，当然也可以通过硬件。基于这样的理解，本发明实施例的技术方案本质上或者说对相关技术做出贡献的部分可以以软件产品的形式体现出来，该计算机软件产品存储在一个存储介质(如ROM/RAM、磁碟、光盘)中，包括若干指令用以使得一台终端设备(可以是手机，计算机，服务器，或者网络设备等)执行本发明实施例所述的方法。Through the description of the above embodiments, those skilled in the art can clearly understand that the method according to the above embodiments can be implemented by means of software plus a necessary general hardware platform, and of course, by hardware. Based on such understanding, the technical solution of the embodiments of the present invention may be embodied in the form of a software product in essence or in the form of a software product stored in a storage medium (such as ROM/RAM, disk). The optical disc includes a plurality of instructions for causing a terminal device (which may be a mobile phone, a computer, a server, or a network device, etc.) to perform the method described in the embodiments of the present invention.
需要说明的是，上述模块是可以通过软件或硬件来实现的，对于后者，可以通过以下方式实现，但不限于此：上述模块均位于同一处理器中；或者，上述模块分别位于多个处理器中。It should be noted that the above modules may be implemented by software or hardware. For the latter, the foregoing may be implemented by, but not limited to, the foregoing modules are all located in the same processor; or, the modules are respectively located in multiple processes. In the device.
本发明实施例还提供了一种存储介质。可选地，在本实施例中，上述存储介质可以设置为存储用于执行上述实施例的方法步骤的程序代码：The embodiment of the invention further provides a storage medium. Optionally, in this embodiment, the storage medium may be configured to store program code for performing the method steps of the above embodiments:
可选地，在本实施例中，上述存储介质可以包括但不限于：U盘、只读存储器(ROM，Read-Only Memory)、随机存取存储器(RAM，Random Access Memory)、移动硬盘、磁碟或者光盘等各种可以存储程序代码的介质。Optionally, in this embodiment, the foregoing storage medium may include, but not limited to, a USB flash drive, a Read-Only Memory (ROM), a Random Access Memory (RAM), a mobile hard disk, and a magnetic memory. A variety of media that can store program code, such as a disc or a disc.
可选地，在本实施例中，处理器可根据存储介质中已存储的程序代码执行上述实施例的方法步骤。Optionally, in this embodiment, the processor may perform the method steps of the foregoing embodiments according to the stored program code in the storage medium.
本领域普通技术人员可以理解上述实施例的全部或部分步骤可以使用计算机程序流程来实现，所述计算机程序可以存储于一计算机可读存储介质中，所述计算机程序在相应的硬件平台上(如***、设备、装置、器件、处理器等)执行，在执行时，包括方法实施例的步骤之一或其组合。One of ordinary skill in the art will appreciate that all or a portion of the steps of the above-described embodiments can be implemented using a computer program flow, which can be stored in a computer readable storage medium, such as on a corresponding hardware platform (eg, The system, device, device, device, processor, etc. are executed, and when executed, include one or a combination of the steps of the method embodiments.
可选地，上述实施例的全部或部分步骤也可以使用集成电路来实现，这些步骤可以被分别制作成一个个集成电路模块，或者将它们中的多个模块或 步骤制作成单个集成电路模块来实现。Optionally, all or part of the steps of the foregoing embodiments may also be implemented by using an integrated circuit, and the steps may be separately fabricated into integrated circuit modules, or multiple modules thereof or The steps are made into a single integrated circuit module.
上述实施例中的装置/功能模块/功能单元可以采用通用的计算装置来实现，它们可以集中在单个的计算装置上，也可以分布在多个计算装置所组成的网络上。The devices/function modules/functional units in the above embodiments may be implemented by a general-purpose computing device, which may be centralized on a single computing device or distributed over a network of multiple computing devices.
上述实施例中的装置/功能模块/功能单元以软件功能模块的形式实现并作为独立的产品销售或使用时，可以存储在一个计算机可读取存储介质中。上述提到的计算机可读取存储介质可以是只读存储器，磁盘或光盘等。When the device/function module/functional unit in the above embodiment is implemented in the form of a software function module and sold or used as a stand-alone product, it can be stored in a computer readable storage medium. The above mentioned computer readable storage medium may be a read only memory, a magnetic disk or an optical disk or the like.
本领域的普通技术人员可以理解，可以对本申请的技术方案进行修改或者等同替换，而不脱离本申请技术方案的精神和范围。本申请的保护范围以权利要求所定义的范围为准。A person skilled in the art can understand that the technical solutions of the present application can be modified or equivalently replaced without departing from the spirit and scope of the technical solutions of the present application. The scope of protection of this application is defined by the scope defined by the claims.
工业实用性Industrial applicability
通过本发明实施例，基站配置终端的混合自动请求重传应答消息HARQ-ACK的发送模式，所述基站接收所述终端依据所述发送模式发送的HARQ-ACK，解决了不必要的PDSCH重传浪费下行资源的问题，提高了下行资源的利用率。 According to the embodiment of the present invention, the base station configures a hybrid automatic request retransmission response message HARQ-ACK transmission mode of the terminal, and the base station receives the HARQ-ACK sent by the terminal according to the transmission mode, and solves unnecessary PDSCH retransmission. The problem of wasting downlink resources increases the utilization of downlink resources.

Claims (41)

  1. 一种应答信息的传输方法，包括：A method for transmitting response information, comprising:
    基站配置终端的混合自动请求重传应答消息HARQ-ACK的发送模式；The base station configures a hybrid mode of the hybrid automatic request retransmission response message HARQ-ACK of the terminal;
    所述基站接收所述终端依据所述发送模式发送的HARQ-ACK。The base station receives a HARQ-ACK sent by the terminal according to the sending mode.
  2. 根据权利要求1所述的方法，其中，所述HARQ-ACK的发送模式包括以下至少之一：The method of claim 1, wherein the transmission mode of the HARQ-ACK comprises at least one of the following:
    正常发送模式；Normal transmission mode;
    重复发送模式；Repeated transmission mode;
    支持重传模式。Support for retransmission mode.
  3. 根据权利要求2所述的方法，其中，所述基站配置终端的混合自动请求重传应答消息HARQ-ACK的发送模式包括以下至少之一：The method according to claim 2, wherein the transmission mode of the hybrid automatic request retransmission response message HARQ-ACK of the base station configuration terminal comprises at least one of the following:
    所述基站与所述终端约定默认模式为所述支持重传模式；The base station and the terminal agree that the default mode is the support retransmission mode;
    所述基站通过高层信令的第一配置参数指示所述终端的发送模式为所述发送模式之一；And indicating, by the first configuration parameter of the high layer signaling, the sending mode of the terminal is one of the sending modes;
    所述基站通过高层信令的第二配置参数指示所述支持重传模式；The base station indicates the support retransmission mode by using a second configuration parameter of the high layer signaling;
    所述基站通过高层信令的第三配置参数指示所述重复发送模式。The base station indicates the repeated transmission mode by using a third configuration parameter of the high layer signaling.
  4. 根据权利要求3所述的方法，其中：The method of claim 3 wherein:
    所述第二配置参数为新增加的参数，所述第三配置参数为新增加的参数，或者，所述第三配置参数为相关协议的参数。The second configuration parameter is a newly added parameter, the third configuration parameter is a newly added parameter, or the third configuration parameter is a parameter of a related protocol.
  5. 根据权利要求2所述的方法，还包括：The method of claim 2 further comprising:
    当所述基站配置所述终端的HARQ-ACK的发送模式为所述重复发送模式时，所述基站配置所述HARQ-ACK重复发送的次数以及在重复发送时所使用的资源。When the base station configures the transmission mode of the HARQ-ACK of the terminal to be the repeated transmission mode, the base station configures the number of times the HARQ-ACK is repeatedly transmitted and the resources used when the transmission is repeated.
  6. 根据权利要求2所述的方法，还包括：The method of claim 2 further comprising:
    当所述基站配置所述终端的HARQ-ACK发送模式为所述支持重传模式时，所述基站发送指示所述终端进行HARQ-ACK重传的下行控制信息，包 括以下至少之一：When the base station configures the HARQ-ACK transmission mode of the terminal to be in the support retransmission mode, the base station sends downlink control information indicating that the terminal performs HARQ-ACK retransmission, and the packet Including at least one of the following:
    所述基站通过在物理混合自动重传指示信息PHICH上的错误应答信息NACK来指示所述终端进行HARQ-ACK重传；The base station instructs the terminal to perform HARQ-ACK retransmission by using an error acknowledgement information NACK on the physical hybrid automatic retransmission indication information PHICH;
    所述基站通过在物理下行控制信道PDCCH或者增强物理下行控制信道EPDCCH上发送的下行控制信息DCI来指示所述终端进行HARQ-ACK重传。The base station instructs the terminal to perform HARQ-ACK retransmission by using downlink control information DCI transmitted on the physical downlink control channel PDCCH or the enhanced physical downlink control channel EPDCCH.
  7. 根据权利要求6所述的方法，其中，The method of claim 6 wherein
    当所述基站通过在PHICH上的NACK来指示所述终端进行HARQ-ACK重传时，所述的PHICH的资源根据承载所述HARQ-ACK的资源确定；When the base station indicates that the terminal performs HARQ-ACK retransmission by using a NACK on the PHICH, the PHICH resource is determined according to the resource that carries the HARQ-ACK;
    当所述基站通过在PDCCH或者EPDCCH上发送的DCI来指示所述终端进行HARQ-ACK重传时，所述方法还包括以下至少之一方式：When the base station indicates that the terminal performs HARQ-ACK retransmission by using DCI transmitted on the PDCCH or the EPDCCH, the method further includes at least one of the following manners:
    所述基站通过已有DCI的已有的控制域的特定状态来指示，其中所述DCI已有的控制域的特定状态为相关协议未被使用的状态；The base station is indicated by a specific state of an existing control domain of the existing DCI, where the specific state of the existing control domain of the DCI is a state in which the related protocol is not used;
    所述基站通过专有的无线网络临时标识RNTI对已有大小的DCI进行加扰，所述专有RNTI用于指示采用所述RNTI加扰的DCI为指示所述终端进行HARQ-ACK重传的DCI，其中，所述专有RNTI通过高层信令配置给所述终端。The base station scrambles the DCI of the existing size by using a dedicated radio network temporary identifier RNTI, where the dedicated RNTI is used to indicate that the DCI scrambled by the RNTI is used to indicate that the terminal performs HARQ-ACK retransmission. The DCI, wherein the private RNTI is configured to the terminal by higher layer signaling.
  8. 根据权利要求7所述的方法，所述DCI中除了包括用于指示HARQ-ACK重传的所述控制域外，还包括以下至少之一：The method according to claim 7, wherein the DCI includes at least one of the following in addition to the control domain for indicating HARQ-ACK retransmission:
    在所述HARQ-ACK重传时的资源指示控制域；a resource indication control domain at the time of the HARQ-ACK retransmission;
    在所述HARQ-ACK重传时的传输功率控制域；a transmission power control field at the time of the HARQ-ACK retransmission;
    在所述HARQ-ACK重传时的调制方式。Modulation mode at the time of HARQ-ACK retransmission.
  9. 根据权利要求2所述的方法，还包括：The method of claim 2 further comprising:
    当所述基站配置所述终端的HARQ-ACK发送模式为所述支持重传模式时，所述基站接收所述终端在第一预设子帧上第一次发送的HARQ-ACK；When the base station configures the HARQ-ACK transmission mode of the terminal to be in the support retransmission mode, the base station receives a HARQ-ACK that is sent by the terminal for the first time in the first preset subframe;
    在所述基站检测出所述终端在第一预设子帧上发送的HARQ-ACK传输有误的情况下，所述基站在第二预设子帧之前不发送与所述HARQ-ACK对应的下行重传数据包或新的数据包时，所述基站接收终端在第三预设子帧上 的发送HARQ-ACK重传信息。If the base station detects that the HARQ-ACK transmission sent by the terminal in the first preset subframe is incorrect, the base station does not send the HARQ-ACK corresponding to the second preset subframe. When the downlink retransmits the data packet or the new data packet, the base station receiving terminal is on the third preset subframe. Send HARQ-ACK retransmission information.
  10. 根据权利要求2所述的方法，其中：The method of claim 2 wherein:
    当所述基站同时配置了HARQ-ACK重复发送模式和HARQ-ACK重复发送模式使能时，所述基站与所述终端约定，在所述HARQ-ACK重传时，重复发送的次数相对于前一次发送次数递增。When the base station is configured with the HARQ-ACK repeat transmission mode and the HARQ-ACK repeat transmission mode enabled, the base station and the terminal agree that the number of repeated transmissions is relative to the former when the HARQ-ACK is retransmitted. The number of times of sending is incremented.
  11. 根据权利要求6至权利要求8中任一项所述的方法，其中：A method according to any one of claims 6 to 8, wherein:
    当HARQ-ACK的配置在一个物理上行控制信道PUCCH上发送时，所述DCI在主下行分量载波上发送；When the configuration of the HARQ-ACK is sent on one physical uplink control channel PUCCH, the DCI is sent on the primary downlink component carrier;
    当HARQ-ACK的配置在多个PUCCH上发送时，所述DCI在所述PUCCH服务小区组所对应的主分量载波上发送。When the configuration of the HARQ-ACK is transmitted on multiple PUCCHs, the DCI is transmitted on a primary component carrier corresponding to the PUCCH serving cell group.
  12. 根据权利要求1所述的方法，还包括：The method of claim 1 further comprising:
    所述基站在DCI中携带下行分配索引DAI信息，所述DAI信息用于终端确定发送的HARQ-ACK。The base station carries downlink allocation index DAI information in the DCI, where the DAI information is used by the terminal to determine the transmitted HARQ-ACK.
  13. 根据权利要求12所述的方法，其中：The method of claim 12 wherein:
    所述DAI信息为DCI中新增加的控制域或已有的控制域，且DAI信息在不同的DCI所表示的含义不同，其中所述不同的DCI指不同服务小区或子帧的DCI。The DAI information is a newly added control domain or an existing control domain in the DCI, and the DAI information is different in meanings represented by different DCIs, where the different DCIs refer to DCIs of different serving cells or subframes.
  14. 根据权利要求13所述的方法，还包括：The method of claim 13 further comprising:
    所述基站通过调度的N个服务小区中的前面N-m个服务小区的DCI中的DAI指示按照一定顺序截止到当前服务小区已经调度的服务小区的数量，调度的N个服务小区中的最后m个服务小区的DCI中的DAI指示当前子帧调度的服务小区总数；或者，The base station indicates, by a DAI in the DCI of the preceding Nm serving cells in the scheduled N serving cells, that the number of serving cells that have been scheduled by the current serving cell in a certain order, and the last m of the N serving cells that are scheduled The DAI in the DCI of the serving cell indicates the total number of serving cells scheduled in the current subframe; or,
    最后m个服务小区的DCI中的DAI重复调度的第N-m个服务小区的DCI中的DAI；或者，The DAI in the DCI of the N-mth serving cell in which the DAI in the last m serving cells is repeatedly scheduled; or
    最后m个服务小区的DCI中的DAI与调度的第N-m个服务小区的DCI的DAI具有预设的偏置值且都相同，其中，N和m均为正整数，m为基站与终端约定好的取值。 The DAI in the DCI of the last m serving cells and the DAI of the DCI of the scheduled Nm serving cells have preset offset values and are the same, where N and m are positive integers, and m is a good agreement between the base station and the terminal. The value.
  15. 一种应答信息的传输方法，包括：A method for transmitting response information, comprising:
    终端确定混合自动请求重传应答消息HARQ-ACK的发送模式；The terminal determines a transmission mode of the hybrid automatic request retransmission response message HARQ-ACK;
    所述终端依据基站配置的HARQ-ACK的发送模式向基站发送HARQ-ACK。The terminal sends a HARQ-ACK to the base station according to a transmission mode of the HARQ-ACK configured by the base station.
  16. 根据权利要求15所述的方法，其中，所述HARQ-ACK的发送模式包括以下至少之一：The method of claim 15, wherein the transmission mode of the HARQ-ACK comprises at least one of the following:
    正常发送模式；Normal transmission mode;
    重复发送模式；Repeated transmission mode;
    支持重传模式。Support for retransmission mode.
  17. 根据权利要求16所述的方法，其中，所述终端确定HARQ-ACK的发送模式包括以下至少之一：The method of claim 16, wherein the terminal determines that the transmission mode of the HARQ-ACK comprises at least one of the following:
    所述终端与所述基站约定默认模式为所述支持重传模式；The terminal and the base station agree that the default mode is the support retransmission mode;
    所述基站通过高层信令的第一配置参数指示所述终端的发送模式为所述发送模式之一；And indicating, by the first configuration parameter of the high layer signaling, the sending mode of the terminal is one of the sending modes;
    所述基站通过高层信令的第二配置参数指示所述支持重传模式；The base station indicates the support retransmission mode by using a second configuration parameter of the high layer signaling;
    所述基站通过高层信令的第三配置参数指示所述重复发送模式。The base station indicates the repeated transmission mode by using a third configuration parameter of the high layer signaling.
  18. 根据权利要求17所述的方法，其中：The method of claim 17 wherein:
    所述第二配置参数为新增加的配置参数，所述第三配置参数为新增加的配置参数，或者，所述第三配置参数为相关协议的配置参数。The second configuration parameter is a newly added configuration parameter, the third configuration parameter is a newly added configuration parameter, or the third configuration parameter is a configuration parameter of a related protocol.
  19. 根据权利要求16所述的方法，其中，所述依据基站配置的HARQ-ACK的发送模式向基站发送HARQ-ACK包括：The method according to claim 16, wherein the transmitting the HARQ-ACK to the base station according to the transmission mode of the HARQ-ACK configured by the base station comprises:
    当所述HARQ-ACK发送模式确定为所述重复发送模式时，所述终端在连续的上行子帧上采用高层配置的资源重复发送所述HARQ-ACK，其中所述连续的上行子帧数由高层配置。When the HARQ-ACK transmission mode is determined to be the repeated transmission mode, the terminal repeatedly transmits the HARQ-ACK by using a resource configured by a higher layer on consecutive uplink subframes, where the consecutive uplink subframe numbers are High-level configuration.
  20. 根据权利要求16所述的方法，还包括：The method of claim 16 further comprising:
    当所述HARQ-ACK发送模式确定为所述支持重传模式时，所述终端接收基站发送的指示所述终端进行HARQ-ACK重传的下行控制信息，所述终 端根据所述下行控制信息，确定是否进行HARQ-ACK重传。When the HARQ-ACK transmission mode is determined to be the support retransmission mode, the terminal receives downlink control information that is sent by the base station and indicates that the terminal performs HARQ-ACK retransmission, where the terminal The terminal determines whether to perform HARQ-ACK retransmission according to the downlink control information.
  21. 根据权利要求20所述的方法，其中，所述终端接收所述基站发送的指示所述终端进行HARQ-ACK重传的下行控制信息，包括以下至少之一：The method according to claim 20, wherein the terminal receives downlink control information that is sent by the base station and indicates that the terminal performs HARQ-ACK retransmission, and includes at least one of the following:
    所述终端接收在物理混合自动重传指示信息PHICH上发送的下行控制信息，所述的PHICH的资源根据承载所述HARQ-ACK的资源确定；The terminal receives downlink control information that is sent on the physical hybrid automatic retransmission indication information PHICH, and the resources of the PHICH are determined according to resources that carry the HARQ-ACK;
    所述终端接收在物理下行控制信道PDCCH或者增强物理下行控制信道EPDCCH上发送的下行控制信息DCI。The terminal receives downlink control information DCI transmitted on the physical downlink control channel PDCCH or the enhanced physical downlink control channel EPDCCH.
  22. 根据权利要求20所述的方法，还包括：The method of claim 20 further comprising:
    当所述终端接收到所述PHICH上的错误应答信息NACK时，所述终端进行HARQ-ACK重传；When the terminal receives the error response information NACK on the PHICH, the terminal performs HARQ-ACK retransmission;
    当所述终端接收到的所述DCI中预设的控制域为预设的特定状态时，所述终端进行HARQ-ACK重传。When the preset control domain in the DCI received by the terminal is a preset specific state, the terminal performs HARQ-ACK retransmission.
  23. 根据权利要求22所述的方法，所述DCI中除了包括用于指示HARQ-ACK重传的所述控制域外，还包括以下至少之一：The method according to claim 22, wherein the DCI includes at least one of the following in addition to the control domain for indicating HARQ-ACK retransmission:
    在所述HARQ-ACK重传时的资源指示控制域；a resource indication control domain at the time of the HARQ-ACK retransmission;
    在所述HARQ-ACK重传时的传输功率控制域；a transmission power control field at the time of the HARQ-ACK retransmission;
    在所述HARQ-ACK重传时的调制方式。Modulation mode at the time of HARQ-ACK retransmission.
  24. 根据权利要求20所述的方法，还包括：The method of claim 20 further comprising:
    所述终端采用专有的无线网络临时标识RNTI对所述DCI进行解扰，并根据高层配置的索引信息获取与所述终端相关的HARQ-ACK重传信息。The terminal uses the proprietary radio network temporary identifier RNTI to descramble the DCI, and acquires HARQ-ACK retransmission information related to the terminal according to the index information of the high layer configuration.
  25. 根据权利要求20所述的方法，其中：The method of claim 20 wherein:
    当所述下行控制信息指示终端要进行HARQ-ACK重传时，所述终端在第三预设上行子帧上进行HARQ-ACK重传。When the downlink control information indicates that the terminal is to perform HARQ-ACK retransmission, the terminal performs HARQ-ACK retransmission on the third preset uplink subframe.
  26. 根据权利要求17所述的方法，其中：The method of claim 17 wherein:
    当所述HARQ-ACK发送模式确定为支持重传模式时，所述终端在第二预设子帧之前没有接收到所述基站发送的与所述HARQ-ACK对应的下行重传数据包或新的数据包且所述终端前一次发送的HARQ-ACK信息中包含 NACK时，所述终端在第三预设上行子帧上行HARQ-ACK重传。When the HARQ-ACK transmission mode is determined to support the retransmission mode, the terminal does not receive the downlink retransmission data packet corresponding to the HARQ-ACK sent by the base station or new before the second preset subframe. Data packet and the HARQ-ACK information previously sent by the terminal includes In the case of NACK, the terminal performs uplink HARQ-ACK retransmission in the third preset uplink subframe.
  27. 根据权利要求25或权利要求26所述的方法，其中，所述终端在第三预设上行子帧上进行HARQ-ACK重传，包括以下至少之一：The method according to claim 25 or claim 26, wherein the terminal performs HARQ-ACK retransmission on a third preset uplink subframe, including at least one of the following:
    当所述终端在所述第三预设上行子帧上没有物理上行共享信道PUSCH发送，或所述终端在所述第三预设子帧上有PUSCH发送且所述终端配置为允许物理上行控制信道PUCCH和PUSCH同传时，所述终端在所述第三预设子帧上采用预设的PUCCH资源进行HARQ-ACK重传，其中所述的第三预设上行子帧为根据所述下行控制信息确定的上行子帧，或与基站约定好的上行子帧，所述预设的PUCCH资源为根据所述下行控制信息确定的PUCCH资源，或高层配置的PUCCH资源；When the terminal does not have a physical uplink shared channel PUSCH transmission on the third preset uplink subframe, or the terminal has a PUSCH transmission on the third preset subframe, and the terminal is configured to allow physical uplink control. When the channel PUCCH and the PUSCH are transmitted simultaneously, the terminal performs a HARQ-ACK retransmission using the preset PUCCH resource in the third preset subframe, where the third preset uplink subframe is according to the downlink. The uplink subframe that is determined by the control information, or the uplink subframe that is agreed with the base station, where the preset PUCCH resource is a PUCCH resource determined according to the downlink control information, or a PUCCH resource configured by a higher layer;
    当所述终端在所述第三预设子帧上有PUSCH发送且所述终端配置为不允许PUCCH和PUSCH同传时，所述终端在所述第三预设子帧上在所述PUSCH上进行HARQ-ACK重传。When the terminal has PUSCH transmission on the third preset subframe, and the terminal is configured to not allow PUCCH and PUSCH to transmit simultaneously, the terminal is on the PUSCH in the third preset subframe. Perform HARQ-ACK retransmission.
  28. 根据权利要求17所述的方法，其中，The method of claim 17, wherein
    当所述HARQ-ACK发送模式确定为所述支持重传模式和所述重复发送模式的结合模式时，所述终端在连续的上行子帧上采用高层配置的资源重复发送所述的HARQ-ACK，其中所述连续的上行子帧数由高层配置，然后，所述方法还包括：When the HARQ-ACK transmission mode is determined to be the combined mode of the retransmission mode and the repeated transmission mode, the terminal repeatedly transmits the HARQ-ACK by using a resource configured by a higher layer on consecutive uplink subframes. The number of consecutive uplink subframes is configured by a higher layer, and then the method further includes:
    所述终端根据HARQ-ACK发送模式为所述支持重传模式进行后续处理，其中，所述终端要发送HARQ-ACK时，都进行重复发送处理。The terminal performs subsequent processing in the support retransmission mode according to the HARQ-ACK transmission mode, where the terminal performs repeated transmission processing when the HARQ-ACK is to be sent.
  29. 根据权利要求17所述的方法，其中：The method of claim 17 wherein:
    当HARQ-ACK发送模式确定为所述支持重传模式和所述重复发送模式的结合模式时，所述终端根据与所述基站的约定，在进行HARQ-ACK重传时，重复发送的次数相对于前一次发送次数递增。When the HARQ-ACK transmission mode is determined to be the combined mode of the retransmission mode and the repeated transmission mode, the terminal according to the agreement with the base station, when performing HARQ-ACK retransmission, the number of repeated transmissions is relatively The number of previous transmissions is incremented.
  30. 根据权利要求15所述的方法，还包括：The method of claim 15 further comprising:
    所述终端向基站发送HARQ-ACK前，确定需要反馈的HARQ-ACK比特数以及反馈的HARQ-ACK比特序列。Before transmitting the HARQ-ACK to the base station, the terminal determines the number of HARQ-ACK bits that need to be fed back and the HARQ-ACK bit sequence that is fed back.
  31. 根据权利要求30所述的方法，其中，所述确定需要反馈的HARQ-ACK 比特数以及反馈的HARQ-ACK比特序列包括：The method of claim 30, wherein said determining HARQ-ACK requiring feedback The number of bits and the feedback HARQ-ACK bit sequence include:
    所述终端根据所述基站发送的下行分配索引DAI确定需要反馈的HARQ-ACK比特数以及反馈的HARQ-ACK比特序列。The terminal determines, according to the downlink allocation index DAI sent by the base station, the number of HARQ-ACK bits that need to be fed back and the HARQ-ACK bit sequence that is fed back.
  32. 根据权利要求31所述的方法，其中：The method of claim 31 wherein:
    所述DAI信息为DCI中新增加的控制域或已有的控制域，且所述DAI信息在不同的DCI所表示的含义不同，其中所述不同的DCI指不同服务小区或子帧的DCI。The DAI information is a newly added control domain or an existing control domain in the DCI, and the DAI information has different meanings represented by different DCIs, where the different DCIs refer to DCIs of different serving cells or subframes.
  33. 根据权利要求32所述的方法，还包括：The method of claim 32 further comprising:
    所述终端根据与所述基站约定，调度的N个服务小区中的前面N-m个服务小区的DCI中的DAI指示按照一定顺序截止到当前服务小区已经调度的服务小区的数量，调度的N个服务小区中的最后m个服务小区的DCI中的DAI指示当前子帧调度的服务小区总数；或者，The terminal according to the agreement with the base station, the DAI in the DCI of the first Nm serving cells in the N scheduled serving cells indicates that the number of serving cells that have been scheduled by the current serving cell is in a certain order, and the N services are scheduled. The DAI in the DCI of the last m serving cells in the cell indicates the total number of serving cells scheduled in the current subframe; or
    最后m个服务小区的DCI中的DAI重复调度的第N-m个服务小区的DCI中的DAI；或者，The DAI in the DCI of the N-mth serving cell in which the DAI in the last m serving cells is repeatedly scheduled; or
    最后m个服务小区的DCI中的DAI与调度的第N-m个服务小区的DCI的DAI具有预设的偏置值且都相同，其中，N和m均为正整数，m为基站与终端约定好的取值。The DAI in the DCI of the last m serving cells and the DAI of the DCI of the scheduled Nm serving cells have preset offset values and are the same, where N and m are positive integers, and m is a good agreement between the base station and the terminal. The value.
  34. 一种应答信息的传输装置，位于基站中，包括：A transmission device for responding to information, located in a base station, comprising:
    配置模块，设置为：基站配置终端的混合自动请求重传应答消息HARQ-ACK的发送模式；a configuration module, configured to: a base station configuration terminal, a hybrid automatic request retransmission response message, a HARQ-ACK transmission mode;
    接收模块，设置为：所述基站接收所述终端依据所述发送模式发送的HARQ-ACK。The receiving module is configured to: the base station receives the HARQ-ACK sent by the terminal according to the sending mode.
  35. 根据权利要求34所述的装置，其中，所述HARQ-ACK的发送模式包括以下至少之一：The apparatus of claim 34, wherein the transmission mode of the HARQ-ACK comprises at least one of the following:
    正常发送模式；Normal transmission mode;
    重复发送模式；Repeated transmission mode;
    支持重传模式。 Support for retransmission mode.
  36. 根据权利要求34所述的装置，其中，所述配置模块包括以下至少之一：The apparatus of claim 34, wherein the configuration module comprises at least one of:
    第一配置单元，设置为：所述终端与所述基站约定默认模式为所述支持重传模式；a first configuration unit, configured to: the terminal and the base station agree that a default mode is the support retransmission mode;
    第二配置单元，设置为：所述基站通过高层信令的第一配置参数指示所述终端的发送模式为所述发送模式之一；a second configuration unit, configured to: indicate, by the base station, that a sending mode of the terminal is one of the sending modes by using a first configuration parameter of the high layer signaling;
    第三配置单元，设置为：所述基站通过高层信令的第二配置参数指示所述支持重传模式；a third configuration unit, configured to: indicate, by the second base station, the support retransmission mode by using a second configuration parameter of the high layer signaling;
    第四配置单元，设置为：所述基站通过高层信令的第三配置参数指示所述重复发送模式。And a fourth configuration unit, configured to: indicate, by the base station, the repeated transmission mode by using a third configuration parameter of the high layer signaling.
  37. 一种基站，包括：权利要求34至权利要求36中任一项所述的应答信息的传输装置。A base station comprising: the transmission device for response information according to any one of claims 34 to 36.
  38. 一种应答信息的传输装置，位于终端中，包括：A transmission device for responding to information, located in the terminal, comprising:
    确定模块，设置为：终端确定混合自动请求重传应答消息HARQ-ACK的发送模式；Determining a module, configured to: determine, by the terminal, a transmission mode of the hybrid automatic request retransmission response message HARQ-ACK;
    发送模块，设置为：所述终端依据基站配置的HARQ-ACK的发送模式向基站发送HARQ-ACK。The sending module is configured to: send, by the terminal, a HARQ-ACK to the base station according to a transmission mode of the HARQ-ACK configured by the base station.
  39. 根据权利要求38所述的装置，其中，所述HARQ-ACK的发送模式包括以下至少之一：The apparatus of claim 38, wherein the transmission mode of the HARQ-ACK comprises at least one of the following:
    正常发送模式；Normal transmission mode;
    重复发送模式；Repeated transmission mode;
    支持重传模式。Support for retransmission mode.
  40. 根据权利要求38所述的装置，其中，所述确定模块包括以下至少之一：The apparatus of claim 38, wherein the determining module comprises at least one of:
    第一确定单元，设置为：所述终端与所述基站约定默认模式为所述支持重传模式；a first determining unit, configured to: the terminal and the base station agree that a default mode is the support retransmission mode;
    第二确定单元，设置为：所述基站通过高层信令的第一配置参数指示所 述终端的发送模式为所述发送模式之一；a second determining unit, configured to: indicate, by the base station, the first configuration parameter of the high layer signaling The transmission mode of the terminal is one of the transmission modes;
    第三确定单元，设置为：所述基站通过高层信令的第二配置参数指示所述支持重传模式；a third determining unit, configured to: the base station indicates the support retransmission mode by using a second configuration parameter of the high layer signaling;
    第四确定单元，设置为：所述基站通过高层信令的第三配置参数指示所述重复发送模式。And a fourth determining unit, configured to: indicate, by the base station, the repeated transmission mode by using a third configuration parameter of the high layer signaling.
  41. 一种终端，包括：权利要求38至权利要求40中任一项所述的应答信息的传输装置。 A terminal comprising: the transmission device for response information according to any one of claims 38 to 40.
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