WO2019192299A1 - Harq-ack消息的传输方法、终端及基站 - Google Patents

Harq-ack消息的传输方法、终端及基站 Download PDF

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Publication number
WO2019192299A1
WO2019192299A1 PCT/CN2019/077996 CN2019077996W WO2019192299A1 WO 2019192299 A1 WO2019192299 A1 WO 2019192299A1 CN 2019077996 W CN2019077996 W CN 2019077996W WO 2019192299 A1 WO2019192299 A1 WO 2019192299A1
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Prior art keywords
bwp handover
harq
bwp
ack
handover
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English (en)
French (fr)
Chinese (zh)
Inventor
高雪娟
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China Academy of Telecommunications Technology CATT
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China Academy of Telecommunications Technology CATT
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Priority to JP2020554140A priority Critical patent/JP7354139B2/ja
Priority to EP19781475.9A priority patent/EP3771129B1/en
Priority to KR1020207031745A priority patent/KR102585705B1/ko
Priority to US17/044,210 priority patent/US11621804B2/en
Publication of WO2019192299A1 publication Critical patent/WO2019192299A1/zh
Anticipated expiration legal-status Critical
Priority to JP2022200955A priority patent/JP2023036744A/ja
Ceased legal-status Critical Current

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    • 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
    • H04L1/1607—Details of the supervisory signal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
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    • 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
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • H04L1/1819—Hybrid protocols; Hybrid automatic repeat request [HARQ] with retransmission of additional or different redundancy
    • H—ELECTRICITY
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    • 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
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1854—Scheduling and prioritising arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
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    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
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    • 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
    • H04L1/1607—Details of the supervisory signal
    • H04L1/1664—Details of the supervisory signal the supervisory signal being transmitted together with payload signals; piggybacking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
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    • 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
    • H04L1/1607—Details of the supervisory signal
    • H04L1/1671—Details of the supervisory signal the supervisory signal being transmitted together with control information
    • H—ELECTRICITY
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    • 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
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    • 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
    • H04L1/1896—ARQ related signaling
    • H—ELECTRICITY
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    • H04L5/00—Arrangements affording multiple use of the transmission path
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    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • H—ELECTRICITY
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    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0096—Indication of changes in allocation
    • H04L5/0098—Signalling of the activation or deactivation of component carriers, subcarriers or frequency bands
    • H—ELECTRICITY
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    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/14—Two-way operation using the same type of signal, i.e. duplex
    • H04L5/1469—Two-way operation using the same type of signal, i.e. duplex using time-sharing
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
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    • H04W72/04—Wireless resource allocation
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    • H04W72/0446—Resources in time domain, e.g. slots or frames
    • H—ELECTRICITY
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    • H04W—WIRELESS COMMUNICATION NETWORKS
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    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0453—Resources in frequency domain, e.g. a carrier in FDMA
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/12—Wireless traffic scheduling
    • H04W72/1263—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows
    • H04W72/1268—Mapping of traffic onto schedule, e.g. scheduled allocation or multiplexing of flows of uplink data flows
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals

Definitions

  • the present disclosure relates to the field of communications technologies, and in particular, to a method, a terminal, and a base station for transmitting a HARQ-ACK message.
  • 5G NR 5 Generation New RAT, 5th generation new wireless access technology
  • 5G NR 5 Generation New RAT, 5th generation new wireless access technology
  • PDSCH Physical Downlink Shared Channel
  • PDCCH Physical Downlink Control Channel
  • HARQ Hybrid Automatic Repeat Request
  • the time domain resource allocation indication field in the DCI (Downlink Control Information) format used by the PDCCH indicates the time slot offset of the time slot in which the PDSCH is located and the time slot in which the DCI is located; the PDSCH to the HARQ in the DCI format
  • the -ACK feedback timing indication field indicates the number of slots K1 between the end of the PDSCH and the start of the HARQ-ACK, as shown in FIG.
  • the largest set of K0 is ⁇ 0, 1, 2, 3, 4, 5, 8, 10, 16, 20, 32 ⁇ .
  • the semi-static and dynamic HARQ-ACK codebook generation methods are supported in the 5G NR system.
  • the so-called HARQ-ACK codebook is a HARQ-ACK feedback sequence generated for downlink transmission of HARQ-ACK feedback on the same time domain location or uplink channel.
  • the Dynamic HARQ-ACK codebook performs HARQ-ACK ordering and determines the total number of bits of the HARQ-ACK codebook according to the indication of the DAI (Downlink Assignment Index) field in the DL (Downlink) DCI, and therefore Dynamically change the codebook size at different feedback moments.
  • DAI Downlink Assignment Index
  • a carrier can include a maximum of four BWPs (BandWidth Part), and the terminal will only work on one BWP at a time, and the BWP is called an activated BWP.
  • the activation of the BWP may be triggered by a timer, or may be dynamically indicated by a PDCCH that schedules a PDSCH or a PUSCH (Physical Uplink Shared Channel), that is, the DCI used in the PDCCH includes a BWP indication field, and the indication is Which BWP on the scheduled carrier receives the PDSCH or transmits the PUSCH, and the indicated BWP is the activated BWP.
  • the terminal When the indicated BWP number is different from the BWP number of the previous received PDSCH or the PUSCH, the terminal indicates that the terminal performs the dynamic BWP. Handover, that is, the terminal needs to receive the PDSCH or transmit the PUSCH on the indicated new BWP, and start working on the new BWP after the PDSCH or PUSCH, as shown in FIG. 2.
  • the time between the end position of the PDCCH indicating the BWP handover and the start position of the PDSCH or the PUSCH scheduled by the PDCCH is referred to as a transit time, and is used to include PDCCH processing, radio frequency adjustment, and preparation of uplink data (for PUSCH transmission) time. During the transient time, the terminal does not receive any data or send it.
  • the BWP handover includes a DL BWP handover and a UL (Uplink) BWP handover.
  • DL BWP handover For FDD (Frequency Division Duplex), since the DL and the UL are paired independent spectrums, the PDCCH scheduling the PDSCH can be used to notify the DL. In the BWP handover, the PDCCH for scheduling the PUSCH may be used to notify the UL BWP handover.
  • the TDD Time Division Duplex
  • the UL is simultaneously switched when the DL is switched, and vice versa, that is, scheduling.
  • Both the PDCCH of the PDSCH and the PDCCH scheduling the PUSCH can be used to notify the BWP handover, and the DL and the UL BWP are simultaneously switched at the time of handover.
  • BWP switching is performed when the timer expires.
  • TDD both the UL BWP and the DL BWP are switched to the default BWP.
  • FDD only the DL BWP is currently switched to the default BWP.
  • the two switching mechanisms coexist in the system, and the timer is started when the terminal switches to a new BWP (which may be the BWP indicated by the PDCCH or the default BWP according to the timer switch), if an indication BWP is correctly received. The timer is restarted when the PDCCH is switched.
  • Some embodiments of the present disclosure provide a method, a terminal, and a base station for transmitting a HARQ-ACK message, to solve the problem that the HARQ-ACK feedback is performed after the BWP handover of the physical downlink channel received before the BWP handover in the related art.
  • Some embodiments of the present disclosure provide a hybrid automatic repeat request acknowledgement HARQ-ACK message transmission method, including:
  • the physical downlink channel includes: a physical downlink shared channel PDSCH or a physical downlink control channel PDCCH indicating downlink half-persistent scheduling SPS resource release.
  • the step of determining whether to transmit the HARQ-ACK of the physical downlink channel after the BWP handover according to the preset rule includes:
  • the BWP handover occurs on a carrier that is not used for physical uplink control channel PUCCH transmission, transmitting the HARQ-ACK of the physical downlink channel after the BWP handover; and/or,
  • the HARQ-ACK of the physical downlink channel is transmitted after the BWP handover.
  • the step of transmitting the HARQ-ACK of the physical downlink channel after the BWP handover includes:
  • the HARQ-ACK of the physical downlink channel is transmitted over a PUCCH or a physical uplink shared channel PUSCH on one BWP on a carrier for transmitting a PUCCH.
  • the step of determining whether to transmit the HARQ-ACK of the physical downlink channel after the BWP handover according to the preset rule includes:
  • the BWP handover occurs on a carrier for PUCCH transmission, or when the BWP handover occurs on a carrier for PUCCH transmission and is FDD, the BWP is switched to a UL BWP handover, or when BWP handover occurs on the carrier used for PUCCH transmission and is time division duplex TDD:
  • the HARQ-ACK of the physical downlink channel is transmitted on the uplink channel determined according to the PDCCH indicating the BWP handover or the PDCCH transmitted after the BWP handover is completed or the PDCCH transmitted after the BWP handover point.
  • the uplink channel determined according to the PDCCH indicating the BWP handover or the PDCCH transmitted after the BWP handover is completed or the PDCCH transmitted after the BWP handover point includes:
  • the HARQ-ACK resource in the PDCCH transmitted later indicates the PUCCH determined by the domain; or,
  • the BWP handover includes a downlink DL BWP and/or an uplink UL BWP handover.
  • the BWP handover includes: a UL BWP triggered by a PDCCH triggered by a timer or a PDCCH grant carrying an uplink grant UL grant or a downlink grant DL grant, and a DL BWP handover;
  • the BWP handover includes: a DL BWP handover triggered by a timer or a DL BWP handover triggered by a PDCCH carrying a DL grant and/or a UL BWP handover triggered by a PDCCH carrying a UL grant.
  • the method when the HARQ-ACK of the physical downlink channel is transmitted after the BWP handover, the method includes:
  • the HARQ-ACK is transmitted using a dynamic HARQ-ACK codebook
  • the HARQ-ACK is transmitted using a dynamic HARQ-ACK codebook
  • the HARQ-ACK is transmitted using a dynamic HARQ-A CK codebook or a semi-static HARQ-ACK codebook.
  • Some embodiments of the present disclosure further provide a hybrid automatic repeat request acknowledgement HARQ-ACK message transmission method, including:
  • the physical downlink channel includes: a physical downlink shared channel PDSCH or a physical downlink control channel PDCCH indicating downlink half-persistent scheduling SPS resource release.
  • the step of determining whether to receive the HARQ-ACK of the physical downlink channel after the BWP handover according to the preset rule includes:
  • the BWP handover occurs on a carrier that is not used for physical uplink control channel PUCCH transmission, receiving a HARQ-ACK of the physical downlink channel after the BWP handover; and/or,
  • the HARQ-ACK of the physical downlink channel is received after the BWP handover.
  • the receiving the HARQ-ACK of the physical downlink channel after the BWP handover includes:
  • the HARQ-ACK of the physical downlink channel is received over a PUCCH or a physical uplink shared channel PUSCH on one BWP on a carrier for transmitting a PUCCH.
  • the step of determining whether to receive the HARQ-ACK of the physical downlink channel after the BWP handover according to the preset rule includes:
  • the BWP handover occurs on a carrier for PUCCH transmission, or when the BWP handover occurs on a carrier for PUCCH transmission and is FDD, the BWP is switched to a UL BWP handover, or BWP handover occurs on the carrier used for PUCCH transmission and is time division duplex TDD:
  • the HARQ-ACK of the physical downlink channel after the BWP handover or separately receiving the HARQ-ACK of the physical downlink channel through the PUCCH after the BWP handover, or after the BWP handover And receiving, according to the PDCCH indicating the BWP handover or the PDCCH transmitted after the BWP handover is completed or the PDCCH determined after the BWP handover point, the HARQ-ACK of the physical downlink channel is received.
  • the uplink channel determined according to the PDCCH indicating the BWP handover or the PDCCH transmitted after the BWP handover is completed or the PDCCH transmitted after the BWP handover point includes:
  • the HARQ-ACK resource in the PDCCH transmitted later indicates the PUCCH determined by the domain; or,
  • the BWP handover includes a downlink DL BWP and/or an uplink UL BWP handover.
  • the BWP handover includes: a UL BWP triggered by a PDCCH triggered by a timer or a PDCCH grant carrying an uplink grant UL grant or a downlink grant DL grant, and a DL BWP handover;
  • the BWP handover includes: a DL BWP handover triggered by a timer or a DL BWP handover triggered by a PDCCH carrying a DL grant and/or a UL BWP handover triggered by a PDCCH carrying a UL grant.
  • the method when the HARQ-ACK of the physical downlink channel is transmitted after the BWP handover, the method includes:
  • the HARQ-ACK is transmitted using a dynamic HARQ-ACK codebook
  • the HARQ-ACK is transmitted using a dynamic HARQ-ACK codebook
  • the HARQ-ACK is transmitted using a dynamic HARQ-A CK codebook or a semi-static HARQ-ACK codebook.
  • Some embodiments of the present disclosure also provide a terminal, including: a transceiver, a memory, a processor, and a computer program stored on the memory and executable on the processor, the processor implementing the computer program to implement the following steps :
  • the physical downlink channel includes: a physical downlink shared channel PDSCH or a physical downlink control channel PDCCH indicating downlink half-persistent scheduling SPS resource release.
  • the processor is further configured to perform the following steps:
  • the HARQ-ACK of the physical downlink channel is transmitted after the BWP handover.
  • the transceiver is further configured to perform the following steps:
  • the HARQ-ACK of the physical downlink channel is transmitted over a PUCCH or a physical uplink shared channel PUSCH on one BWP on a carrier for transmitting a PUCCH.
  • the processor is further configured to perform the following steps:
  • the BWP handover occurs on a carrier for PUCCH transmission, or when the BWP handover occurs on a carrier for PUCCH transmission and is FDD, the BWP is switched to a UL BWP handover, or when BWP handover occurs on the carrier used for PUCCH transmission and is time division duplex TDD:
  • the transceiver does not transmit the HARQ-ACK of the physical downlink channel through the PUCCH after the BWP handover, or not transmitting the HARQ-ACK of the physical downlink channel by using the PUCCH separately after the BWP handover, Or after the BWP handover, transmitting the HARQ of the physical downlink channel according to a PDCCH indicated by the BWP handover or a PDCCH transmitted after a BWP handover is completed or an PDCCH determined after a BWP handover point. -ACK.
  • the uplink channel determined according to the PDCCH indicating the BWP handover or the PDCCH transmitted after the BWP handover is completed or the PDCCH transmitted after the BWP handover point includes:
  • the HARQ-ACK resource in the PDCCH transmitted later indicates the PUCCH determined by the domain; or,
  • the BWP handover includes a downlink DL BWP and/or an uplink UL BWP handover.
  • the BWP handover includes: a UL BWP triggered by a PDCCH triggered by a timer or a PDCCH grant carrying an uplink grant UL grant or a downlink grant DL grant, and a DL BWP handover;
  • the BWP handover includes: a DL BWP handover triggered by a timer or a DL BWP handover triggered by a PDCCH carrying a DL grant and/or a UL BWP handover triggered by a PDCCH carrying a UL grant.
  • the transceiver transmits the HARQ-ACK of the physical downlink channel after the BWP handover:
  • the HARQ-ACK is transmitted using a dynamic HARQ-ACK codebook
  • the HARQ-ACK is transmitted using a dynamic HARQ-ACK codebook
  • the HARQ-ACK is transmitted using a dynamic HARQ-A CK codebook or a semi-static HARQ-ACK codebook.
  • Some embodiments of the present disclosure further provide a computer readable storage medium having stored thereon a computer program, when executed by a processor, implementing the hybrid automatic repeat request of the terminal side to confirm a transmission method of the HARQ-ACK message. step.
  • Some embodiments of the present disclosure also provide a base station, including: a transceiver, a memory, a processor, and a computer program stored on the memory and operable on the processor, the processor implementing the computer program to implement the following steps :
  • the physical downlink channel includes: a physical downlink shared channel PDSCH or a physical downlink control channel PDCCH indicating downlink half-persistent scheduling SPS resource release.
  • the processor is further configured to perform the following steps:
  • the HARQ-ACK of the physical downlink channel is received after the BWP handover.
  • the transceiver is further configured to perform the following steps:
  • the HARQ-ACK of the physical downlink channel is received over a PUCCH or a physical uplink shared channel PUSCH on one BWP on a carrier for transmitting a PUCCH.
  • the processor is further configured to perform the following steps:
  • the BWP handover occurs on a carrier for PUCCH transmission, or when the BWP handover occurs on a carrier for PUCCH transmission and is FDD, the BWP is switched to a UL BWP handover, or when BWP handover occurs on the carrier used for PUCCH transmission and is time division duplex TDD:
  • the transceiver does not receive the HARQ-ACK of the physical downlink channel after the BWP handover, or separately receiving the HARQ-ACK of the physical downlink channel through the PUCCH after the BWP handover, or After the BWP handover, the HARQ-ACK of the physical downlink channel is received on an uplink channel determined according to the PDCCH indicating the BWP handover or the PDCCH transmitted after the BWP handover is completed or the PDCCH transmitted after the BWP handover point.
  • the uplink channel determined according to the PDCCH indicating the BWP handover or the PDCCH transmitted after the BWP handover is completed or the PDCCH transmitted after the BWP handover point includes:
  • the HARQ-ACK resource in the PDCCH transmitted later indicates the PUCCH determined by the domain; or,
  • the BWP handover includes a downlink DL BWP and/or an uplink UL BWP handover.
  • the BWP handover includes: a UL BWP triggered by a PDCCH triggered by a timer or a PDCCH grant carrying an uplink grant UL grant or a downlink grant DL grant, and a DL BWP handover;
  • the BWP handover includes: a DL BWP handover triggered by a timer or a DL BWP handover triggered by a PDCCH carrying a DL grant and/or a UL BWP handover triggered by a PDCCH carrying a UL grant.
  • the transceiver transmits the HARQ-ACK of the physical downlink channel after the BWP handover:
  • the HARQ-ACK is transmitted using a dynamic HARQ-ACK codebook
  • the HARQ-ACK is transmitted using a dynamic HARQ-ACK codebook
  • the HARQ-ACK is transmitted using a dynamic HARQ-A CK codebook or a semi-static HARQ-ACK codebook.
  • Some embodiments of the present disclosure further provide a computer readable storage medium having stored thereon a computer program, when the computer program is executed by a processor, implementing the hybrid automatic repeat request confirmation of a base station side to confirm a HARQ-ACK message transmission method A step of.
  • Some embodiments of the present disclosure also provide another terminal, including:
  • a first determining module configured to: when the physical downlink channel received before the bandwidth part BWP handover needs to perform HARQ-ACK feedback after the BWP handover, determine, according to a preset rule, whether to transmit after the BWP handover HARQ-ACK of the physical downlink channel.
  • Some embodiments of the present disclosure also provide another base station, including:
  • a second determining module configured to determine, according to a preset rule, whether to switch in the BWP according to a preset rule, when a physical downlink channel that needs to perform HARQ-ACK feedback after the BWP handover is sent to the terminal before the bandwidth part BWP handover The HARQ-ACK of the physical downlink channel is then received.
  • the transmission condition of the HARQ-ACK of the physical downlink channel after the handover may be determined, and the normal feedback of the HARQ-ACK of the physical downlink channel during the BWP handover may be ensured, thereby improving system efficiency.
  • 1 is a schematic diagram showing a DCI indicating a slot offset and a number of slots used by a related art PDCCH;
  • FIG. 2 is a schematic diagram of BWP switching in the related art
  • FIG. 3 is a schematic diagram of performing HARQ-ACK feedback after a BWP handover on a physical downlink channel received on an original BWP in the related art
  • FIG. 4 is a schematic diagram 1 showing a method for transmitting a HARQ-ACK message according to some embodiments of the present disclosure
  • FIG. 5 is a schematic diagram showing transmission of a HARQ-ACK message of a TDD of a first example of some embodiments of the present disclosure
  • FIG. 6 is a schematic diagram showing transmission of a HARB-ACK message of a UL BWP handover of FDD of a first example of some embodiments of the present disclosure
  • FIG. 7 is a schematic diagram showing transmission of a DL BWP handover HARQ-ACK message of FDD of a first example of some embodiments of the present disclosure
  • FIG. 8 is a schematic diagram of transmission of a HARQ-ACK message for TDD of a second example of some embodiments of the present disclosure
  • FIG. 9 is a schematic diagram showing transmission of a HARQ-ACK message for FDD of a third example of some embodiments of the present disclosure.
  • FIG. 10 is a diagram showing transmission of a HARQ-ACK message for TDD of a fourth example of some embodiments of the present disclosure.
  • FIG. 11 shows a transmission diagram of a HARQ-ACK message for FDD of a fourth example of some embodiments of the present disclosure
  • FIG. 12 is a diagram showing a transmission of a HARQ-ACK message of a fifth example of some embodiments of the present disclosure.
  • FIG. 13 is a diagram showing a transmission of a HARQ-ACK message of a sixth example of some embodiments of the present disclosure.
  • FIG. 14 is a schematic diagram 2 showing a method for transmitting a HARQ-ACK message according to some embodiments of the present disclosure
  • FIG. 15 is a schematic structural diagram of a terminal according to some embodiments of the present disclosure.
  • FIG. 16 is a schematic structural diagram of another terminal according to some embodiments of the present disclosure.
  • FIG. 17 is a schematic structural diagram of a base station according to some embodiments of the present disclosure.
  • FIG. 18 is another schematic structural diagram of a base station according to some embodiments of the present disclosure.
  • Some embodiments of the present disclosure provide a method for transmitting a hybrid automatic repeat request acknowledgement HARQ-ACK message, as shown in FIG. 4, including:
  • Step 401 When the physical downlink channel received before the bandwidth part BWP handover needs to perform HARQ-ACK feedback after the BWP handover, determine whether to transmit the HARQ of the physical downlink channel after the BWP handover according to a preset rule. ACK.
  • the terminal When the terminal receives the physical downlink channel sent by the base station before the BWP handover, and the received physical downlink channel needs to perform HARQ-ACK feedback after the BWP handover, the terminal may perform a preset rule jointly established with the base station. It is determined whether or not the HARQ-ACK of the physical downlink channel is transmitted after the BWP handover. If it is determined that the HARQ-ACK of the physical downlink channel is transmitted after the BWP handover, the transmission process may be performed by using a corresponding policy.
  • the foregoing method can determine the HARQ-ACK transmission of the physical downlink channel after the BWP handover according to the set condition, and can ensure the normal feedback of the HA RQ-ACK of the physical downlink channel during the BWP handover, and improve the system. effectiveness.
  • the physical downlink channel includes: a physical downlink shared channel PDSCH or a physical downlink control channel PDCCH indicating downlink half-persistent scheduling SPS resource release.
  • the HARQ-ACK of the PDCCH may be transmitted after the BWP handover according to a preset rule.
  • the step of determining whether to transmit the HARQ-ACK of the physical downlink channel after the BWP handover according to a preset rule includes: when the BWP handover occurs not for the physical uplink control channel PUCCH transmission On the carrier, the HARQ-ACK of the physical downlink channel after the BWP handover; and/or,
  • the HARQ-ACK of the physical downlink channel is transmitted after the BWP handover.
  • the HARQ-ACK of the physical downlink channel after the BWP handover it may first detect whether the BWP handover occurs on the carrier for the PUCCH (Physical Uplink Control Channel) transmission, if the BWP The handover occurs on a carrier that is not used for PUCCH transmission, and the HARQ-ACK of the physical downlink channel can be transmitted after the BWP handover.
  • PUCCH Physical Uplink Control Channel
  • the HARQ-ACK of the physical downlink channel is transmitted after the BWP handover; that is, for the FDD system, whether the DL BWP handover occurs for transmission
  • the carrier of the PUCCH is also a carrier that is not used to transmit the PUCCH, and does not affect the transmission of the HARQ-ACK. This is because, for FDD, when there is only DL BWP handover, the UL BWP for transmitting the PUCCH is not transformed, so whether the uplink channel transmission resource on the UL BWP is determined according to the PDCCH before handover or the PDCCH after handover, There will be no conflicts.
  • the step of transmitting a HARQ-ACK of a physical downlink channel after a BWP handover includes: transmitting a HARQ of a physical downlink channel through a PUCCH or a physical uplink shared channel PUSCH on one BWP on a carrier for transmitting a PUCCH -ACK.
  • the transmission may be performed on one BWP on the carrier for transmitting the PUCCH, specifically, the PUCCH or the PUSCH may be used for transmission.
  • Example 1 The following describes a case where BWP handover occurs on a carrier that is not used for PUCCH transmission with a specific example, see Example 1.
  • CC (Component Carrier) 1 is used to transmit PUCCH
  • activated BWP is BWP1
  • CC2 is SCC (Secondary Component Carrier). If it is not used to transmit PUCCH, DL occurs on CC2.
  • the BWP is switched, since the CC and BWP transmitting the HARQ-ACK feedback information do not change, the HARQ-ACK feedback of the downlink transmission on the CC2 before the handover or the DL BWP after the handover can be determined according to the indicated K1.
  • the corresponding time on BWP1 on CC1 is transmitted.
  • the base station can continuously count multiple PDSCHs by C-DAI (Counter DAI) in the DCI used by each PDCCH, and give it by T-DAI (Total DAI, total number DAI).
  • C-DAI Counter DAI
  • the K1 value in the PDCCH of the PDSCH3 determines the time domain location, and the PUCCH resource in the corresponding slot is determined according to the HARQ-ACK resource indication domain indication, and the transmission may be performed separately. If the UL BWP handover is performed on CC2, the transmission of the HARQ-ACK feedback of the downlink transmission on the BWP1 of CC1 is also not affected.
  • the execution of UL or DL handover on a carrier that is not used to transmit PUCCH is similar to TDD, as shown in FIGS. 6 and 7, and the specific process will not be described again.
  • the DL handover occurs on the carrier for transmitting the PUCCH, since the UL BWP for transmitting the PUCCH does not change, the resource indication before and after the handover is not affected, and the HARQ-ACK feedback of the downlink transmission before the handover is also the same. Can be transferred after switching.
  • the step of determining whether to transmit the HARQ-ACK of the physical downlink channel after the BWP handover according to the preset rule includes:
  • BWP handover occurs on a carrier for PUCCH transmission, or BWP handover to UL BWP handover when BWP handover occurs on a carrier for PUCCH transmission and is FDD, or when BWP handover occurs in PUCCH transmission
  • the carrier is on time division duplex TDD, it can be processed as follows:
  • the HARQ-ACK of the physical downlink channel is not transmitted through the PUCCH after the BWP handover, or the HARQ-ACK of the physical downlink channel is not transmitted through the PUCCH separately after the BWP handover, or after the BWP handover, the PDCCH according to the indication BWP handover Or transmitting the HARQ-ACK of the physical downlink channel on the uplink channel determined by the PDCCH transmitted after the BWP handover is completed or the PDCCH transmitted after the BWP handover point.
  • the BWP handover occurs on the carrier for PUCCH transmission, or if the BWP handover occurs on the carrier for PUCCH transmission and is FDD, the BWP is switched to UL BWP handover, or if BWP handover occurs in the PUCCH transmission
  • the transmission of the HARQ-ACK of the physical downlink channel after the BWP handover may include the following:
  • the HARQ-ACK of the physical downlink channel is not transmitted through the PUCCH after the BWP handover; or the HARQ-ACK of the physical downlink channel is not transmitted through the PUCCH separately after the BWP handover; or after the BWP handover, may be according to the PDCCH indicating the BWP handover Or the PDCCH transmitted after the completion of the BWP handover or the PDCCH transmitted after the BWP handover point determines the uplink channel, and the HARQ-ACK of the physical downlink channel may be transmitted on the determined uplink channel. It should be noted that the time after the completion of the handover is the time after the conversion time.
  • the uplink channel determined according to the PDCCH indicating the BWP handover or the PDCCH transmitted after the BWP handover is completed or the PDCCH transmitted after the BWP handover point includes:
  • the HARQ-ACK resource in the indication domain determines the PUCCH; or,
  • the HARQ-ACK of the physical downlink channel may be transmitted on the determined uplink channel after the BWP handover, and the uplink channel determined here may be a PUCCH or a PUSCH.
  • the PUCCH it may be determined according to the HARQ-ACK resource indication field in the PDCCH indicating the BWP handover, and may also be determined according to the HARQ-ACK resource indication field in the PDCCH transmitted after the BWP handover is completed, and may also be determined according to The HARQ-ACK resource indication field in the PDCC H transmitted after the BWP handover point is determined.
  • the PUSCH scheduled by the PDCCH indicating the BWP handover may be used as the PUSCH for transmitting the HARQ-ACK of the physical downlink channel, and the PUSCH scheduled by the PDCCH transmitted after the BWP handover is completed may be used as the transmission physical downlink.
  • the PUSCH of the HARQ-ACK of the channel channel may also use the PUSCH scheduled by the PDCCH transmitted after the BWP handover point as the PUSCH of the HARQ-ACK transmitting the physical downlink channel.
  • it is also necessary to ensure that the HARQ-ACK can be transmitted on the PUSCH for example, the start symbol of the PUCCH resource corresponding to the HARQ-ACK is advanced or the start symbol of the PUSCH is aligned.
  • the BWP handover includes a downlink DL BWP and/or an uplink UL BWP handover.
  • the BWP handover includes: a UL BWP triggered by a PDCCH triggered by a timer or carrying an uplink grant UL grant or a downlink grant DL grant, and a DL BWP handover;
  • the BWP handover includes: a DL BWP handover triggered by a timer or a PDCCH triggered DL BWP handover carrying a DL grant and/or a UL BWP handover triggered by a PDCCH carrying a UL grant.
  • the BWP handover includes: UL/DL BWP handover according to a timer trigger or a PDCCH trigger, where the UL BWP of the TDD and the DL BWP handover are performed simultaneously.
  • the BWP handover includes: DL and/or UL BWP handover triggered according to a timer trigger or a PDCCH indication, where the DL BWP handover may be triggered by a timer or a PDCCH carrying a DL grant, and the UL BWP handover may be performed by a bearer UL.
  • the PDCCH of the grant is triggered.
  • the method when the HARQ-ACK of the physical downlink channel is transmitted after the BWP handover, the method includes: for TDD, the HARQ-ACK uses the dynamic HARQ-ACK codebook transmission; or, for the FDD, when the DL BWP is switched, the HARQ - ACK uses dynamic HARQ-ACK codebook transmission; or, for FDD, when UL BWP handover, HARQ-ACK uses dynamic HARQ-ACK codebook or semi-static HARQ-ACK codebook transmission.
  • the HARQ-ACK When transmitting HARQ-ACK of the physical downlink channel, for TDD, the HARQ-ACK uses dynamic HARQ-ACK codebook transmission when DL BWP handover occurs. For FDD, the DL BWP handover and the UL BWP handover have different transmissions. When a DL BWP handover occurs, the HARQ-ACK uses a dynamic HARQ-ACK codebook transmission, and when a UL BWP handover occurs, the HARQ-ACK may use a dynamic HARQ-ACK codebook transmission, or a semi-static HAR Q-ACK codebook may be used. transmission.
  • the HARQ-ACK of the physical downlink channel is not transmitted through the PUCCH on the UL BWP after the handover, or the HARQ-ACK of the physical downlink channel is not after the handover PUCCH transmission on the UL BWP, or HARQ-ACK of the physical downlink channel on the UL BWP after handover, in the PUCCH determined according to the HARQ-ACK resource indication field in the PDCCH transmitted after the BWP handover is completed, or Transmission on the PUCCH determined according to the HARQ-ACK resource indication field in the PDCCH transmitted after the BWP switching point.
  • the HARQ-ACK of the physical downlink channel is multiplexed with the HARQ-ACK corresponding to the PDCCH transmitted after the BWP handover is completed or the HARQ-ACK corresponding to the PDCCH transmitted after the UL BWP handover point is in the same PUCCH. Transfer on.
  • the HARQ-ACK corresponding to the PDCCH that is sent after the BWP handover is completed or the PDCCH that is sent after the UL BWP handover point includes: when the PDCCH is a PDCCH indicating downlink SPS resource release, the HARQ of the PDCCH - ACK, HARQ-ACK of the PDSCH when the PDCCH is used to schedule one PDSCH transmission.
  • the switching point is a time at which the UL BWP handover is determined. For example, the end position of the UL grant indicating the BWP handover is used as the switching point, or the time when the timer expires is used as the switching point.
  • the HARQ-ACK is transmitted using a dynamic HARQ-ACK codebook; for FDD, the HARQ-ACK may be transmitted using a dynamic HARQ-ACK codebook or a semi-static HARQ-ACK codebook.
  • the PUCCH cannot be transmitted in the corresponding transit time of the handover, that is, after the transient time.
  • the UL BWP handover may be triggered by a PDCCH carrying a UL grant or triggered by a timer.
  • the UL/DL BWP handover may be triggered by a timer or triggered by a PDCCH carrying a UL grant.
  • CC1 is a CC transmitting a PUCCH, where the original active BWP is BWP1, and in the slot n+2, the base station transmits a PDCCH2 scheduling terminal to receive the PUSCH on the BWP2, that is, the PDCCH2 is an indication UL.
  • /UL BWP handover UL grant at this time, if there is still PDSCH1 on BWP1 before PDCCH2, it is necessary to perform HARQ-ACK feedback after BWP handover, and determine its HARQ-ACK feedback according to the K1 value indicated in PDCCH1 scheduling the PDSCH.
  • the PUCCH resource when the PUCCH resource transmission on the BWP2 is determined according to the ARI domain on the BWP2, if the base station allocates the PUCCH resource on the BWP2 to other terminals, a PUCCH resource conflict of different terminals will occur, affecting The HARQ-ACK transmission of each terminal, therefore, in this case, in order to avoid PUCCH resource collision, the HARQ-ACK of the PDSCH1 before the handover is not separately transmitted through the PUCCH after the handover.
  • the base station can continuously count multiple PDSCHs through the C-DAI in the DCI used by PDCCH1 and PDCCH3, and give it in slot n+7 through T-DAI.
  • the total number of transmitted HARQ-ACK bits so that the HARQ-ACK multiplexing of the PDSCH before and after the BWP handover is transmitted in the same PUCCH, and the PUCCH resource is indicated by the ARI field in the last PDCCH, since the PDCCH 3 occurs after the handover Therefore, the ARI field therein indicates the PUCCH resource on the switched UL BWP2, and there is no PUCCH resource conflict with other terminals on the UL BWP2.
  • CC1 is a CC transmitting PUCCH, where the original activated UL BWP is BWP1, the original activated DL BWP is also BWP1, and in slot n+2, the base station transmits the PDCCH2 scheduling terminal in UL BWP2.
  • Receiving a PUSCH, that is, the PDCCH2 is a UL grant indicating a UL BWP handover.
  • the HARQ-ACK feedback needs to be performed after the UL BWP handover, according to the scheduling.
  • the K1 value indicated in PDCCH1 of the PDSCH determines the time domain location of its HARQ-ACK feedback.
  • the DL BWP may not transmit when the UL BWP is switched, and the scheduled PUSCH or PUCCH resources are also transmitted on the DL BWP1, therefore, if the terminal is to be switched
  • the HARQ-ACK of the PDSCH1 before the handover is transmitted in the slot n+5 of the UL BWP2, and the PUCCH resource can only be obtained according to the ARI field in the PDCCH1 of the scheduled PDSCH1, but the ARI field originally indicates the UL BWP1 before the handover.
  • PUCCH resource instead of PUCCH resource on UL BWP2 after handover, therefore, when PUCCH resource transmission on UL BWP2 determined according to the ARI domain on UL BWP2, if the base station allocates the PUCCH resource on UL BWP2 to For other terminals, there will be PUCCH resource conflicts of different terminals, which affect the HARQ-ACK transmission of each terminal. Therefore, in this case, in order to avoid PUCCH resource conflict, the HA of the PDSCH1 before switching is switched. The RQ-ACK is not transmitted through the PUCCH separately after the handover.
  • the DL BWP may not be switched when the UL BWP is switched, and the scheduled PUCCH resource is also transmitted on the DL BWP1, that is, the HARQ-ACK of the PDSCH2 according to the The K1 value also needs to be fed back in slot n+7.
  • the base station can continuously count multiple PDSCHs through the C-DAI in the DCI used by PDCCH1 and PDCCH3, and give it in the slot through T-DAI.
  • the total number of HARQ-ACK bits transmitted in n+7 so that the HARQ-ACK multiplexing of the PDSCH before and after the handover of the UL BWP is performed in the same PUCCH, and the PUCCH resource is indicated by the ARI field in the last PDCCH due to PDCCH3 occurs after handover, and therefore the ARI field therein indicates the PUCCH resource on the switched UL BWP2, and there is no PUCCH resource conflict with other terminals on the UL BWP2.
  • the UL grant indication BWP handover is replaced by the BWP handover with the expiration of the timer, and the same applies.
  • a HARQ-ACK of a physical downlink channel is not a UL after handover
  • the BWP is transmitted through the PUCCH, or the HARQ-ACK of the physical downlink channel is not separately transmitted through the PUCCH on the UL BWP after the handover, or the HARQ-ACK of the physical downlink channel is transmitted through the PUSCH on the UL BWP after the handover.
  • the PUSCH is specifically a PUSCH scheduled by the PDCCH indicating the UL BWP handover or a PUSCH scheduled by the PDCCH transmitted after the PDCCH indicating the UL BWP handover.
  • the PUSCH is not transmitted in the corresponding transient time of the handover, that is, after the transient time.
  • the HARQ-ACK is transmitted using a dynamic HARQ-ACK codebook; for FDD, the HARQ-ACK may be transmitted using a dynamic HARQ-ACK codebook or a semi-static HARQ-ACK codebook.
  • UL BWP handover does not affect DL BWP handover, or for TDD, TDD UL BWP and DL BWP handover are performed simultaneously.
  • Example 4 The second case in which BWP handover occurs on a carrier for PUCCH transmission is described below with a specific example, see Example 4 and Example 5.
  • the specific assumption is the same as the second example.
  • the specific assumption is the same as the third example, as shown in FIG. 10.
  • the ACK feedback may be transmitted in the PUSCH in the slot n+4 on the UL BWP after the handover. Since the resource of the PUSCH is scheduled by the PDCCH indicating the handover of the UL BWP, the scheduled uplink resource is for the UL BWP after the handover. Therefore there are no resource conflicts.
  • the HARQ-ACK feedback may be transmitted in the PUSCH in the slot n+6 on the UL BWP after the handover. Since the resource of the PUSCH is scheduled by the PDCCH after the UL BWP handover, the scheduled uplink resource is for the UL BWP after the handover. So there are no resource conflicts.
  • CC1 is a CC transmitting a PUCCH, where the original active BWP is BWP1, and in slot n+2, the base station transmits a PDCCH2 scheduling terminal to receive a PDSCH on BWP2, that is, the PDCCH2 is a DL grant indicating UL/DL BWP handover.
  • the HARQ-ACK feedback needs to be performed after the BWP handover.
  • the execution process is the same as above. I will not repeat them here.
  • the HARQ-ACK of the physical downlink channel is not transmitted through the PUCCH on the UL BWP after handover, or the HARQ of the physical downlink channel - ACK is not transmitted by PUCCH alone on the UL BWP after handover, or HARQ-ACK of the physical downlink channel is on the UL BWP after handover, in accordance with the HARQ-ACK resource indication field in the PDCCH transmitted after completion of the BWP handover
  • the HARQ-ACK of the physical downlink channel is multiplexed with the HARQ-ACK corresponding to the PDCCH transmitted after the BWP handover is completed or the HARQ-ACK corresponding to the PDCCH transmitted after the UL BWP handover point is in the same PUCCH. Transfer on.
  • the HARQ-ACK corresponding to the PDCCH that is sent after the BWP handover is completed or the PDCCH that is sent after the UL BWP handover point includes: when the PDCCH is a PDCCH indicating downlink SPS resource release, the HARQ of the PDCCH - ACK, HARQ-ACK of the PDSCH when the PDCCH is used to schedule one PDSCH transmission.
  • the switching point determines the time at which the UL BWP handover is performed. For example, the end position of the UL grant indicating the BWP handover is used as the switching point, or the time when the timer expires is used as the switching point.
  • HARQ-ACK is transmitted using dynamic HARQ-ACK codebook.
  • the PUCCH cannot be transmitted in the corresponding transit time of the handover, that is, after the transient time.
  • CC1 is a CC transmitting a PUCCH, where the original active BWP is BWP1, and in slot n+2, the base station transmits a PDCCH2 scheduling terminal to receive a PDSCH on BWP2, that is, the PDCCH2 is an indication UL/ DL grant of DL BWP handover.
  • the PDCCH2 is an indication UL/ DL grant of DL BWP handover.
  • HARQ-ACK feedback needs to be performed after BWP handover, and the HARQ-ACK feedback is determined according to the K1 value indicated in PDCCH1 scheduling the PDSCH. Domain location.
  • the base station can continuously count multiple PDSCHs through the C-DAI in the DCI used by PDCCH1 and PDCCH2, and give the T-DAI through The total number of HARQ-ACK bits transmitted in slot n+5, so that the HARQ-ACK multiplexing of the PDSCH before and after the BWP handover is transmitted in the same PUCCH, and the PUCCH resource is indicated by the ARI field in the last PDCCH due to The PDCCH 2 is used to indicate the handover, and therefore the ARI field indicates the PUCCH resource on the switched UL BWP2, and there is no PUCCH resource conflict with other terminals on the UL BWP2;
  • the base station can continuously count multiple PDSCHs through the C-DAI in the DCI used by PDCCH1 and PDCCH3, and give it in slot n+7 through T-DAI.
  • the total number of transmitted HARQ-ACK bits so that the HARQ-ACK multiplexing of the PDSCH before and after the BWP handover is transmitted in the same PUCCH, and the PUCCH resource is indicated by the ARI field in the last PDCCH, since the PDCCH 3 occurs after the handover Therefore, the ARI field therein indicates the PUCCH resource on the switched UL BWP2, and there is no PUCCH resource conflict with other terminals on the UL BWP2.
  • the transmission condition of the HARQ-ACK of the physical downlink channel after the handover can be determined according to the set condition, and the normal feedback of the HARQ-ACK of the physical downlink channel during the BWP handover can be ensured, and the system efficiency is improved.
  • Some embodiments of the present disclosure further provide a method for receiving a hybrid automatic repeat request acknowledgement HARQ-ACK message, as shown in FIG. 14, including:
  • Step 1401 If a physical downlink channel that needs to perform HARQ-ACK feedback after the BWP handover is sent to the terminal before the bandwidth part BWP handover, determine whether to receive the physical downlink after the BWP handover according to a preset rule. HARQ-ACK of the channel.
  • the terminal After the base station transmits the physical downlink channel that needs to perform HARQ-ACK feedback after the BWP handover, the terminal determines the BWP switch according to the preset rule after receiving the physical downlink channel and switching the BWP after the BWP handover. Whether the HARQ-ACK of the physical downlink channel can be transmitted, and if the transmission is possible, the base station receives the HARQ-ACK of the physical downlink channel transmitted by the terminal after the BWP handover according to a preset rule.
  • the above method ensures normal feedback of the HARQ-ACK of the physical downlink channel during BWP handover, and improves system efficiency.
  • the physical downlink channel includes: a physical downlink shared channel PDSCH or a physical downlink control channel PDCCH indicating downlink half-persistent scheduling SPS resource release.
  • the HARQ-ACK of the PDSCH may be transmitted after the BWP handover according to a preset rule; if the reception needs to be received before the BWP handover
  • the HARQ-ACK of the PDCCH may be transmitted after the BWP handover according to a preset rule.
  • the step of determining whether to receive the HARQ-ACK of the physical downlink channel after the BWP handover according to the preset rule includes:
  • the HARQ-ACK of the physical downlink channel is received after the BWP handover; and/or,
  • the HARQ-ACK of the physical downlink channel is received after the BWP handover.
  • the HARQ-ACK of the physical downlink channel may be received after the BWP handover.
  • the HARQ-ACK of the physical downlink channel is received after the BWP handover; that is, for the FDD system, whether the DL BWP handover occurs in the carrier for transmitting the PUCCH or Carriers that are not used to transmit PUCCH do not affect the transmission of HARQ-ACK.
  • the UL BWP for transmitting the PUCCH is not transformed, so whether the uplink channel transmission resource on the UL BWP is determined according to the PDCCH before handover or the PDCCH after handover, There will be no conflicts.
  • the receiving the HARQ-ACK of the physical downlink channel after the BWP handover includes:
  • the HARQ-ACK of the physical downlink channel is received over the PUCCH or the physical uplink shared channel PUSCH on one BWP on the carrier for transmitting the PUCCH.
  • the terminal may receive the BWP on the carrier for transmitting the PUCCH, specifically, the PUCCH or the PUSCH may be used for receiving.
  • the step of determining whether to receive the HARQ-ACK of the physical downlink channel after the BWP handover according to the preset rule includes:
  • the BWP handover occurs on the carrier for PUCCH transmission, or if the BWP handover occurs on the carrier for PUCCH transmission and is FDD, the BWP is switched to UL BWP handover, or if BWP handover occurs in the PUCCH transmission On the carrier and when it is time division duplex TDD:
  • the BWP handover occurs on the carrier for PUCCH transmission, or if the BWP handover occurs on the carrier for PUCCH transmission and is FDD, the BWP is switched to UL BWP handover, or if BWP handover occurs in the PUCCH transmission
  • the case of receiving the HARQ-ACK of the physical downlink channel after the BWP handover may include the following:
  • the uplink channel determined according to the PDCCH indicating the BWP handover or the PDCCH transmitted after the BWP handover is completed or the PDCCH transmitted after the BWP handover point includes:
  • the HARQ-ACK resource in the indication domain determines the PUCCH; or,
  • the HARQ-ACK of the physical downlink channel may be received on the determined uplink channel, where the determined uplink channel may be a PUCCH or a PUSCH.
  • the PUCCH it may be determined according to the HARQ-ACK resource indication field in the PDCCH indicating the BWP handover, and may also be determined according to the HARQ-ACK resource indication field in the PDCCH transmitted after the BWP handover is completed, and may also be determined according to The HARQ-ACK resource indication field in the PDCC H transmitted after the BWP handover point is determined.
  • the PUSCH scheduled by the PDCCH indicating the BWP handover may be the PUSCH transmitting the HARQ-ACK of the physical downlink channel, and the PUSCH scheduled by the PDCCH transmitted after the BWP handover is completed may be used as the transmission physical downlink.
  • the PUSCH of the HARQ-ACK of the channel channel may also use the PUSCH scheduled by the PDCCH transmitted after the BWP handover point as the PUSCH of the HARQ-ACK transmitting the physical downlink channel.
  • it is also necessary to ensure that the HARQ-ACK can be transmitted on the PUSCH for example, the start symbol of the PUCCH resource corresponding to the HARQ-ACK is advanced or the start symbol of the PUSCH is aligned.
  • the BWP handover includes a downlink DL BWP and/or an uplink UL BWP handover.
  • the BWP handover includes: a UL BWP triggered by a PDCCH triggered by a timer or a PDCCH grant carrying an uplink grant UL grant or a downlink grant DL grant, and a DL BWP switch;
  • the BWP handover includes: a DL BWP handover triggered by a timer or a PDCCH triggered DL BWP handover carrying a DL grant and/or a UL BWP handover triggered by a PDCCH carrying a UL grant.
  • the BWP handover includes: UL/DL BWP handover according to a timer trigger or a PDCCH trigger, where the UL BWP of the TDD and the DL BWP handover are performed simultaneously.
  • the BWP handover includes: DL and/or UL BWP handover triggered according to a timer trigger or a PDCCH indication, where the DL BWP handover may be triggered by a timer or a PDCCH carrying a DL grant, and the UL BWP handover It can be triggered by a PDCCH carrying a UL grant.
  • the method when the HARQ-ACK of the physical downlink channel is transmitted after the BWP handover, the method includes: for the TDD, the HARQ-ACK uses the dynamic HARQ-ACK codebook transmission; or, for the FDD, when the DL BWP is switched, the HARQ- The ACK uses dynamic HARQ-ACK codebook transmission; or, for FDD, when UL BWP handover, HARQ-ACK uses dynamic HARQ-A CK codebook or semi-static HARQ-ACK codebook transmission.
  • the HARQ-ACK When transmitting HARQ-ACK of the physical downlink channel, for TDD, the HARQ-ACK uses dynamic HARQ-ACK codebook transmission when DL BWP handover occurs. For FDD, DL BWP switching and UL BWP switching have different transmissions. When a DL BWP handover occurs, the HARQ-ACK uses a dynamic HARQ-ACK codebook transmission, and when a UL BWP handover occurs, the HARQ-ACK may use a dynamic HARQ-ACK codebook transmission, or a semi-static HAR Q-ACK codebook may be used. transmission.
  • the terminal may determine the HARQ-ACK of the physical downlink channel by using a preset rule. After the BWP handover is performed, the HARQ-ACK of the physical downlink channel transmitted by the terminal may be transmitted, and the HARQ-ACK of the physical downlink channel may be transmitted, and the HARQ of the physical downlink channel during the BWP handover is ensured. Normal feedback of ACK improves system efficiency.
  • a base station generally refers to a base station.
  • the base station is not limited in form, and may be a Macro Base Station, a Pico Base Station, a Node B (referred to as a 3G mobile base station), or an enhanced base station (eNB).
  • eNB Home Enhanced Base Station
  • Femto eNB or Home eNode B or Home eNB or HeNB Home Enhanced Base Station
  • Relay Station Access Point
  • RRU Remote Radio Unit
  • RRH Remote Radio Head
  • 5G A network side node in a mobile communication system, such as a central unit (CU, Central Unit) and a distributed unit (DU, distributed unit).
  • the terminal may be a mobile phone (or mobile phone), or other device capable of transmitting or receiving wireless signals, including user equipment (UE), personal digital assistant (PDA), wireless modem, wireless communication device, handheld device, laptop Computers, cordless phones, wireless local loop (WLL) stations, CPE (Customer Premise Equipment) or mobile smart hotspots, smart appliances, or other non-human operations that can convert mobile signals into WiFi signals
  • UE user equipment
  • PDA personal digital assistant
  • WLL wireless local loop
  • CPE Customer Premise Equipment
  • smart hotspots smart appliances, or other non-human operations that can convert mobile signals into WiFi signals
  • some embodiments of the present disclosure also provide an apparatus for implementing the above method.
  • the terminal 1500 includes: a processor 1501, a transceiver 1502, a memory 1503, a user interface 1504, and a bus interface, where:
  • the terminal 1500 further includes a computer program stored on the memory 1503 and operable on the processor 1501.
  • the processor 1501 is configured to read a program in the memory 1503, and perform the following process: if the physical downlink channel received before the bandwidth part BWP handover needs to perform HARQ-ACK feedback after the BWP handover, according to the preset A rule that determines whether to transmit the HARQ-ACK of the physical downlink channel after the BWP handover.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 1501 and various circuits of memory represented by memory 1503.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 1502 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the user interface 1504 may also be an interface capable of externally connecting the required devices, including but not limited to a keypad, a display, a speaker, a microphone, a joystick, and the like.
  • the processor 1501 is responsible for managing the bus architecture and general processing, and the memory 1503 can store data used by the processor 1501 when performing operations.
  • the physical downlink channel includes: a physical downlink shared channel PDSCH or a physical downlink control channel PDCCH indicating downlink half-persistent scheduling SPS resource release.
  • the processor 1501 is further configured to perform the following steps: if the BWP handover occurs on a carrier that is not used for the physical uplink control channel PUCCH transmission, the HARQ of the physical downlink channel is transmitted by the transceiver 1502 after the BWP handover. -ACK; and / or,
  • the HARQ-ACK of the physical downlink channel is transmitted after the BWP handover.
  • the transceiver 1502 is further configured to perform the step of: transmitting the HARQ-ACK of the physical downlink channel through the PUCCH or the physical uplink shared channel PUSCH on one BWP on the carrier for transmitting the PUCCH.
  • processor 1501 is further configured to perform the following steps:
  • BWP handover occurs on a carrier for PUCCH transmission, or BWP handover to UL BWP handover when BWP handover occurs on a carrier for PUCCH transmission and is FDD, or when BWP handover occurs in PUCCH transmission On the carrier and when it is time division duplex TDD:
  • the control transceiver 1502 does not transmit the HARQ-ACK of the physical downlink channel through the PUCCH after the BWP handover, or transmits the HARQ-ACK of the physical downlink channel through the PUCCH separately after the BWP handover, or after the BWP handover, according to the indication
  • the PDCCH of the BWP handover or the HARQ-ACK of the physical downlink channel transmitted on the uplink channel determined by the PDCCH transmitted after the BWP handover is completed or the PDCCH transmitted after the BWP handover point.
  • the uplink channel determined according to the PDCCH indicating the BWP handover or the PDCCH sent after the BWP handover is completed or the PDCCH sent after the BWP handover point includes:
  • the HARQ-ACK resource in the indication domain determines the PUCCH; or,
  • the BWP handover includes a downlink DL BWP and/or an uplink UL BWP handover.
  • the BWP handover includes: a UL BWP triggered by a timer or a PDCCH triggered by an uplink grant UL grant or a downlink grant DL grant, and a DL BWP switch;
  • the BWP handover includes: a DL BWP handover triggered by a timer or a PDCCH triggered DL BWP handover carrying a DL grant and/or a UL BWP handover triggered by a PDCCH carrying a UL grant.
  • the transceiver transmits the HARQ-ACK of the physical downlink channel after the BWP handover:
  • HARQ-ACK uses dynamic HARQ-ACK codebook transmission
  • HARQ-ACK is transmitted using dynamic HARQ-ACK codebook
  • HARQ-ACK is transmitted using a dynamic HARQ-A CK codebook or a semi-static HARQ-ACK codebook.
  • a computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements the following steps:
  • the physical downlink channel received before the bandwidth part BWP handover needs to perform HARQ-ACK feedback after the BWP handover, it is determined according to a preset rule whether to transmit the HARQ-ACK of the physical downlink channel after the BWP handover.
  • the computer readable storage medium in the present disclosure may be a volatile computer readable storage medium, a nonvolatile computer readable storage medium, or a volatile computer readable storage medium and a nonvolatile computer. Read the storage medium.
  • FIG. 16 some embodiments of the present disclosure provide another terminal 1600, including:
  • the first determining module 1601 is configured to: if the physical downlink channel received before the bandwidth part BWP handover needs to perform HARQ-ACK feedback after the BWP handover, determine, according to a preset rule, whether to transmit the physical downlink after the BWP handover HARQ-ACK of the channel.
  • the physical downlink channel includes: a physical downlink shared channel PDSCH or a physical downlink control channel PDCCH indicating downlink half-persistent scheduling SPS resource release.
  • the first determining module includes:
  • a first transmission submodule configured to transmit a HARQ-ACK of the physical downlink channel after the BWP handover if the BWP handover occurs on a carrier that is not used for physical uplink control channel PUCCH transmission;
  • the second transmission submodule is configured to transmit the HARQ-ACK of the physical downlink channel after the BWP handover when the BWP is switched to the DL BWP handover for the frequency division duplex FDD.
  • the first transmission submodule is further used to:
  • the HARQ-ACK of the physical downlink channel is transmitted over the PUCCH or the physical uplink shared channel PUSCH on one BWP on the carrier for transmitting the PUCCH.
  • the first determining module is further used for:
  • the BWP handover occurs on the carrier for PUCCH transmission, or if the BWP handover occurs on the carrier for PUCCH transmission and is FDD, the BWP is switched to UL BWP handover, or if BWP handover occurs in the PUCCH transmission On the carrier and when it is time division duplex TDD:
  • the HARQ-ACK of the physical downlink channel is not transmitted through the PUCCH after the BWP handover, or the HARQ-ACK of the physical downlink channel is not transmitted through the PUCCH separately after the BWP handover, or after the BWP handover, the PDCCH according to the indication BWP handover Or transmitting the HARQ-ACK of the physical downlink channel on the uplink channel determined by the PDCCH transmitted after the BWP handover is completed or the PDCCH transmitted after the BWP handover point.
  • the uplink channel determined according to the PDCCH indicating the BWP handover or the PDCCH transmitted after the BWP handover is completed or the PDCCH transmitted after the BWP handover point includes:
  • the HARQ-ACK resource in the indication domain determines the PUCCH; or,
  • the BWP handover includes a downlink DL BWP and/or an uplink UL BWP handover.
  • the BWP handover includes: a UL BWP triggered by a timer or a PDCCH triggered by an uplink grant UL grant or a downlink grant DL grant, and a DL BWP switch;
  • the BWP handover includes: a DL BWP handover triggered by a timer or a PDCCH triggered DL BWP handover carrying a DL grant and/or a UL BWP handover triggered by a PDCCH carrying a UL grant.
  • the method when the HARQ-ACK of the physical downlink channel is transmitted after the BWP handover, the method includes:
  • HARQ-ACK uses dynamic HARQ-ACK codebook transmission
  • HARQ-ACK is transmitted using dynamic HARQ-ACK codebook
  • HARQ-ACK is transmitted using a dynamic HARQ-A CK codebook or a semi-static HARQ-ACK codebook.
  • the terminal of some embodiments of the present disclosure determines whether the physical downlink channel received before the BWP handover needs to perform HARQ-ACK feedback after the BWP handover, and determines whether to transmit the physical downlink channel after the BWP handover according to a preset rule.
  • the HARQ-ACK can be used to determine the transmission of the HARQ-ACK of the physical downlink channel after the handover according to the set conditions, and can ensure the normal feedback of the HARQ-ACK of the physical downlink channel during the BWP handover, and improve the system. effectiveness.
  • some embodiments of the present disclosure provide a schematic structural diagram of a base station 1700, including: a processor 1701, a transceiver 1702, a memory 1703, and a bus interface, where:
  • base station 1700 also includes a computer program stored on memory 1703 and executable on processor 1701.
  • the processor 1701 is configured to read a program in the memory 1703 and perform the following process:
  • the physical downlink channel that needs to perform HARQ-ACK feedback after the BWP handover is sent to the terminal before the bandwidth part BWP handover, determine whether to receive the HARQ-ACK of the physical downlink channel after the BWP handover according to a preset rule.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 1701 and various circuits of memory represented by memory 1703.
  • the bus architecture can also link various other circuits such as peripherals, voltage regulators, and power management circuits, which are well known in the art and, therefore, will not be further described herein.
  • the bus interface provides an interface.
  • Transceiver 1702 can be a plurality of components, including a transmitter and a receiver, providing means for communicating with various other devices on a transmission medium.
  • the processor 1701 is responsible for managing the bus architecture and general processing, and the memory 1703 can store data used by the processor 1701 in performing operations.
  • the physical downlink channel includes: a physical downlink shared channel PDSCH or a physical downlink control channel PDCCH indicating downlink half-persistent scheduling SPS resource release.
  • processor 1701 is further configured to perform the following steps:
  • the transceiver receives the HARQ-ACK of the physical downlink channel after the BWP handover by the transceiver 1702; and/or,
  • the HARQ-ACK of the physical downlink channel is received after the BWP handover.
  • the transceiver 1702 is further configured to perform the following steps:
  • the HARQ-ACK of the physical downlink channel is received over the PUCCH or the physical uplink shared channel PUSCH on one BWP on the carrier for transmitting the PUCCH.
  • processor 1701 is further configured to perform the following steps:
  • the BWP handover occurs on the carrier for PUCCH transmission, or if the BWP handover occurs on the carrier for PUCCH transmission and is FDD, the BWP is switched to UL BWP handover, or if BWP handover occurs in the PUCCH transmission On the carrier and when it is time division duplex TDD:
  • the control transceiver 1702 does not receive the HARQ-ACK of the physical downlink channel after the BWP handover, or does not separately receive the HARQ-ACK of the physical downlink channel through the PUCCH after the BWP handover, or switches according to the indication BWP after the BWP handover
  • the PDCCH or the HARQ-ACK of the physical downlink channel is received on the PDCCH determined after the BWP handover is completed or the PDCCH determined after the BWP handover point.
  • the uplink channel determined according to the PDCCH indicating the BWP handover or the PDCCH sent after the BWP handover is completed or the PDCCH sent after the BWP handover point includes:
  • the HARQ-ACK resource in the indication domain determines the PUCCH; or,
  • the BWP handover includes a downlink DL BWP and/or an uplink UL BWP handover.
  • the BWP handover includes: a UL BWP triggered by a timer or a PDCCH triggered by an uplink grant UL grant or a downlink grant DL grant, and a DL BWP switch;
  • the BWP handover includes: a DL BWP handover triggered by a timer or a PDCCH triggered DL BWP handover carrying a DL grant and/or a UL BWP handover triggered by a PDCCH carrying a UL grant.
  • the transceiver transmits the HARQ-ACK of the physical downlink channel after the BWP handover: for TDD, the HARQ-ACK uses the dynamic HARQ-ACK codebook transmission; or, for the FDD, when the DL BWP switches, the HARQ - ACK uses dynamic HARQ-ACK codebook transmission; or for FDD, when ULBWP handover, HARQ-ACK uses dynamic HARQ-A CK codebook or semi-static HARQ-ACK codebook transmission.
  • a computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements the following steps:
  • the computer readable storage medium in the present disclosure may be a volatile computer readable storage medium, a nonvolatile computer readable storage medium, or a volatile computer readable storage medium and a nonvolatile computer. Read the storage medium.
  • the base station 1800 includes:
  • the second determining module 1801 is configured to determine, according to a preset rule, whether to receive the physical after the BWP switch, if the physical downlink channel that needs to perform the HARQ-ACK feedback after the BWP handover is sent to the terminal before the bandwidth part BWP handover HARQ-ACK of the downlink channel.
  • the physical downlink channel includes: a physical downlink shared channel PDSCH or a physical downlink control channel PDCCH indicating downlink half-persistent scheduling SPS resource release.
  • the second determining module includes:
  • a first receiving submodule configured to: if the BWP handover occurs on a carrier that is not used for physical uplink control channel PUCCH transmission, receive a HARQ-ACK of the physical downlink channel after the BWP handover; and/or,
  • the second receiving submodule is configured to receive the HARQ-ACK of the physical downlink channel after the BWP handover when the BWP is switched to the DL BWP handover for the frequency division duplex FDD.
  • the first receiving submodule is further used to:
  • the HARQ-ACK of the physical downlink channel is received over the PUCCH or the physical uplink shared channel PUSCH on one BWP on the carrier for transmitting the PUCCH.
  • the second determining module is further configured to:
  • BWP handover occurs on a carrier for PUCCH transmission, or BWP handover to UL BWP handover when BWP handover occurs on a carrier for PUCCH transmission and is FDD, or if BWP handover occurs for PUCCH transmission On the carrier and when it is time division duplex TDD:
  • the uplink channel determined according to the PDCCH indicating the BWP handover or the PDCCH transmitted after the BWP handover is completed or the PDCCH transmitted after the BWP handover point includes:
  • the HARQ-ACK resource in the indication domain determines the PUCCH; or,
  • the BWP handover includes a downlink DL BWP and/or an uplink UL BWP handover.
  • the BWP handover includes: a UL BWP triggered by a timer or a PDCCH triggered by an uplink grant UL grant or a downlink grant DL grant, and a DL BWP switch;
  • the BWP handover includes: DL BWP handover triggered by a timer or a PDCCH triggered DL BWP handover carrying a DL grant and/or a UL BWP handover triggered by a PDCCH carrying a UL grant.
  • the method when the HARQ-ACK of the physical downlink channel is transmitted after the BWP handover, the method includes:
  • HARQ-ACK uses dynamic HARQ-ACK codebook transmission
  • HARQ-ACK is transmitted using dynamic HARQ-ACK codebook
  • the HARQ-ACK is transmitted using a dynamic HARQ-A CK codebook or a semi-static HARQ-ACK codebook.
  • the base station of some embodiments of the present disclosure may determine the HARQ of the physical downlink channel by using a preset rule in the terminal if the physical downlink channel that needs to perform HARQ-ACK feedback after the BWP handover is sent to the terminal before the BWP handover.
  • - ACK may be transmitted after the BWP handover, and receive the HARQ-ACK of the physical downlink channel transmitted by the terminal, which can implement the HARQ-ACK transmission of the physical downlink channel and ensure the physical downlink channel when the BWP is switched.
  • the normal feedback of HARQ-ACK improves system efficiency.
  • the disclosed apparatus and method may be implemented in other manners.
  • the device embodiments described above are merely illustrative.
  • the division of the unit is only a logical function division.
  • there may be another division manner for example, multiple units or components may be combined or Can be integrated into another system, or some features can be ignored or not executed.
  • the mutual coupling or direct coupling or communication connection shown or discussed may be an indirect coupling or communication connection through some interface, device or unit, and may be electrical, mechanical or otherwise.
  • the units described as separate components may or may not be physically separated, and the components displayed as units may or may not be physical units, that is, may be located in one place, or may be distributed to multiple network units. Some or all of the units may be selected according to actual needs to achieve the objectives of some embodiments of the present disclosure.
  • each functional unit in various embodiments of the present disclosure may be integrated into one processing unit, or each unit may exist physically separately, or two or more units may be integrated into one unit.
  • the functions may be stored in a computer readable storage medium if implemented in the form of a software functional unit and sold or used as a standalone product. Based on such understanding, a portion of the technical solution of the present disclosure that contributes in essence or to the related art or a part of the technical solution may be embodied in the form of a software product stored in a storage medium, including several The instructions are for causing a computer device (which may be a personal computer, server, or base station, etc.) to perform all or part of the steps of the various embodiments of the present disclosure.
  • the foregoing storage medium includes various media that can store program codes, such as a USB flash drive, a mobile hard disk, a ROM, a RAM, a magnetic disk, or an optical disk.

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JP2020554140A JP7354139B2 (ja) 2018-04-04 2019-03-13 Ｈａｒｑ－ａｃｋメッセージの伝送方法、端末及び基地局
EP19781475.9A EP3771129B1 (en) 2018-04-04 2019-03-13 Harq-ack transmission method, terminal, and base station
KR1020207031745A KR102585705B1 (ko) 2018-04-04 2019-03-13 Harq-ack 메시지 전송 방법, 단말 및 기지국
US17/044,210 US11621804B2 (en) 2018-04-04 2019-03-13 Method of transmitting HARQ-ACK message, terminal and base station
JP2022200955A JP2023036744A (ja) 2018-04-04 2022-12-16 Ｈａｒｑ－ａｃｋメッセージの伝送方法、端末及び基地局

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