WO2019218869A1 - Procédé de transmission de requête de répétition automatique hybride, terminal et station de base - Google Patents

Procédé de transmission de requête de répétition automatique hybride, terminal et station de base Download PDF

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Publication number
WO2019218869A1
WO2019218869A1 PCT/CN2019/084907 CN2019084907W WO2019218869A1 WO 2019218869 A1 WO2019218869 A1 WO 2019218869A1 CN 2019084907 W CN2019084907 W CN 2019084907W WO 2019218869 A1 WO2019218869 A1 WO 2019218869A1
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WIPO (PCT)
Prior art keywords
dci
pucch resource
feedback information
harq feedback
terminal
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PCT/CN2019/084907
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English (en)
Chinese (zh)
Inventor
司倩倩
高雪娟
艾托尼
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电信科学技术研究院有限公司
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Publication of WO2019218869A1 publication Critical patent/WO2019218869A1/fr

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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
    • H04L1/12—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
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • 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
    • 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 signaling, i.e. of overhead other than pilot signals
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation
    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/02—Selection of wireless resources by user or terminal

Definitions

  • the present disclosure relates to the technical field of communication applications, and in particular, to a transmission method, a terminal, and a base station of a hybrid automatic repeat request.
  • the Physical Downlink Control Channel detects a set of opportunities.
  • the PUCCH format that specifies the PUCCH resource usage in the 3GPP protocol includes: PUCCH format 0, PUCCH format 1, PUCCH format 2, PUCCH format 3, and PUCCH format 4.
  • the PUCCH resource indicator (PRI, also referred to as ARI) included in the Downlink Control Information (DCI) transmitted by the PDCCH detection opportunity may indicate different PUCCH resources, and the terminal cannot Determining whether the corresponding downlink DCI of the Physical Downlink Shared Channel (PDSCH) or the Semi-Persistent Scheduling (SPS) of the HARQ-ACK in the same slot is fed back in the same PUCCH for feedback.
  • the PDCCH detection opportunity set may cause inconsistencies in the understanding of the HARQ-ACK feedback resources by the base station and the terminal, and affect the system transmission performance.
  • the number of slots in the high-level signaling configuration PDSCH-to-HARQ-ACK detection is 1-8, and the DCI of the PDSCH in the slot n to the slot n+7 indicates the corresponding HARQ.
  • the -ACK feedback information is transmitted in time slot n+8.
  • the Counter-Downlink Assignment Indicator (C-DAI) and PRI indications in the DCI are as shown in the figure.
  • the terminal cannot determine whether the DCI of the PDSCH in the slot n to the slot n+7 belongs to the PDCCH detection opportunity set fed back in the same PUCCH in the case described, as in FIG.
  • the terminal understands that the slot n to the slot
  • An object of the present disclosure is to provide a method, a terminal, and a base station for transmitting a hybrid automatic repeat request, which is used to solve the problem that when a dynamic codebook is used, there is currently no way to determine the HARQ corresponding to the PDSCH or SPS release feedback in the same slot. - Whether the ACK is transmitted on the same PUCCH within the slot.
  • the present disclosure provides a method for transmitting a hybrid automatic repeat request, which is applied to a terminal, including:
  • PUCCH resource set includes only PUCCH resources using PUCCH format 0 and PUCCH format 1;
  • the DCI corresponding to the HARQ feedback information transmitted on the same PUCCH resource in the same time slot includes the same PRI, and the DCI corresponding to the HARQ feedback information transmitted on different PUCCHs in the same time slot is different.
  • the HARQ feedback information includes HARQ feedback information corresponding to multiple DCI scheduled PDSCH transmissions or HARQ feedback information corresponding to multiple semi-persistent scheduling SPS releases indicated by DCI.
  • the target PUCCH resource used for determining the HARQ feedback information corresponding to the DCI in the PUCCH resource set according to the physical uplink control channel resource indication PRI included in the downlink control information DCI includes:
  • determining the PRI is the same among the multiple DCIs One or more sets of DCI;
  • one PUCCH is determined as the target PUCCH resource in the PUCCH resource set according to the PRI included in the specified DCI.
  • the specified DCI is the first or last DCI detected by the terminal in the order of increasing the carrier index
  • the specified DCI is the first or last DCI detected by the terminal in the order that the PDCCH detection opportunity index is increased.
  • an embodiment of the present disclosure further provides a method for transmitting a hybrid automatic repeat request, which is applied to a base station, including:
  • PUCCH resource set includes only PUCCH resources using PUCCH format 0 and PUCCH format 1;
  • the DCI corresponding to the HARQ feedback information transmitted on the same PUCCH resource in the same time slot includes the same PRI, and the DCI corresponding to the HARQ feedback information transmitted on different PUCCHs in the same time slot is different.
  • the HARQ feedback information includes HARQ feedback information corresponding to multiple DCI scheduled PDSCH transmissions or multiple HARQ feedback information corresponding to SPS release indicated by DCI.
  • the target PUCCH resource used for determining the HARQ feedback information corresponding to the DCI in the PUCCH resource set according to the physical uplink control channel resource indication PRI included in the downlink control information DCI includes:
  • determining the PRI is the same among the multiple DCIs One or more sets of DCI;
  • one PUCCH is determined as the target PUCCH resource in the PUCCH resource set according to the PRI included in the specified DCI.
  • the specified DCI is the first or last DCI detected by the terminal in the order of increasing the carrier index
  • the specified DCI is the first or last DCI detected by the terminal in the order that the PDCCH detection opportunity index is increased.
  • an embodiment of the present disclosure further provides a terminal, including: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor, where the processor implements the program The following steps:
  • PUCCH resource set includes only PUCCH resources using PUCCH format 0 and PUCCH format 1;
  • the DCI corresponding to the HARQ feedback information transmitted on the same PUCCH resource in the same time slot includes the same PRI, and the DCI corresponding to the HARQ feedback information transmitted on different PUCCHs in the same time slot is different.
  • the HARQ feedback information includes HARQ feedback information corresponding to multiple DCI scheduled PDSCH transmissions or HARQ feedback information corresponding to multiple semi-persistent scheduling SPS releases indicated by DCI.
  • determining the PRI is the same among the multiple DCIs One or more sets of DCI;
  • one PUCCH is determined as the target PUCCH resource in the PUCCH resource set according to the PRI included in the specified DCI.
  • the specified DCI is the first or last DCI detected by the terminal in the order of increasing the carrier index
  • the specified DCI is the first or last DCI detected by the terminal in the order that the PDCCH detection opportunity index is increased.
  • an embodiment of the present disclosure further provides a computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements the steps of a method of transmitting a hybrid automatic repeat request as described above.
  • an embodiment of the present disclosure further provides a base station, including: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor, where the processor implements the program The following steps:
  • PUCCH resource set includes only PUCCH resources using PUCCH format 0 and PUCCH format 1;
  • the physical uplink control channel resource indication PRI included in the DCI corresponding to the HARQ feedback information transmitted on the same PUCCH resource in the same time slot is the same, and the HARQ feedback information transmitted on different PUCCHs in the same time slot corresponds to the HARQ feedback information.
  • the DCI contains different PRIs.
  • the HARQ feedback information includes HARQ feedback information corresponding to multiple DCI scheduled PDSCH transmissions or multiple HARQ feedback information corresponding to SPS release indicated by DCI.
  • determining the PRI is the same among the multiple DCIs One or more sets of DCI;
  • one PUCCH is determined as the target PUCCH resource in the PUCCH resource set according to the PRI included in the specified DCI.
  • the specified DCI is the first or last DCI detected by the terminal in the order of increasing the carrier index
  • the specified DCI is the first or last DCI detected by the terminal in the order that the PDCCH detection opportunity index is increased.
  • an embodiment of the present disclosure further provides a computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements the steps of a method of transmitting a hybrid automatic repeat request as described above.
  • an embodiment of the present disclosure further provides a terminal, including:
  • a first determining module configured to determine a physical uplink control channel PUCCH resource set configured for the terminal, where the PUCCH resource set only includes a PUCCH resource that uses PUCCH format 0 and PUCCH format 1;
  • a sending module configured to determine a PRI according to a physical uplink control channel resource included in the downlink control information DCI, determine a target PUCCH resource used by the DCI feedback information corresponding to the DCI in the PUCCH resource set, and use the target PUCCH resource in the target PUCCH resource Sending HARQ feedback information on;
  • the DCI corresponding to the HARQ feedback information transmitted on the same PUCCH resource in the same time slot includes the same PRI, and the DCI corresponding to the HARQ feedback information transmitted on different PUCCHs in the same time slot is different.
  • the HARQ feedback information includes HARQ feedback information corresponding to multiple DCI scheduled PDSCH transmissions or HARQ feedback information corresponding to multiple semi-persistent scheduling SPS releases indicated by DCI.
  • the sending module includes:
  • a first determining submodule configured to: when the HARQ-ACK information corresponding to the PDSCH transmission of the multiple DCI scheduling or the HARQ-ACK information corresponding to the SPS release indicated by the multiple DCI is fed back in the same time slot, Among a plurality of DCIs, one or more sets of DCIs having the same PRI are determined;
  • a second determining submodule configured to determine, in each set of DCI, one PUCCH as the target PUCCH resource in the PUCCH resource set according to the PRI included in the specified DCI.
  • the specified DCI is the first or last DCI detected by the terminal in the order of increasing the carrier index
  • the specified DCI is the first or last DCI detected by the terminal in the order that the PDCCH detection opportunity index is increased.
  • an embodiment of the present disclosure further provides a base station, including:
  • a second determining module configured to determine a physical uplink control channel PUCCH resource set configured for the terminal, where the PUCCH resource set only includes a PUCCH resource that uses PUCCH format 0 and PUCCH format 1;
  • a receiving module configured to determine a PRI according to a physical uplink control channel resource included in the downlink control information DCI, determine a target PUCCH resource used by the DCI feedback information corresponding to the DCI in the PUCCH resource set, and use the target PUCCH resource in the target PUCCH resource Receiving HARQ feedback information;
  • the DCI corresponding to the HARQ feedback information transmitted on the same PUCCH resource in the same time slot includes the same PRI, and the DCI corresponding to the HARQ feedback information transmitted on different PUCCHs in the same time slot is different.
  • the HARQ feedback information includes HARQ feedback information corresponding to multiple DCI scheduled PDSCH transmissions or multiple HARQ feedback information corresponding to SPS release indicated by DCI.
  • the receiving module includes:
  • a third determining submodule configured to: when the HARQ-ACK information corresponding to the PDSCH transmission of the multiple DCI scheduling or the HARQ-ACK information corresponding to the SPS release indicated by the multiple DCI is fed back in the same time slot, Among a plurality of DCIs, one or more sets of DCIs having the same PRI are determined;
  • a fourth determining submodule configured to determine, in each set of DCI, one PUCCH as the target PUCCH resource in the PUCCH resource set according to the PRI included in the specified DCI.
  • the specified DCI is the first or last DCI detected by the terminal in the order of increasing the carrier index
  • the specified DCI is the first or last DCI detected by the terminal in the order that the PDCCH detection opportunity index is increased.
  • the foregoing technical solution of the embodiment of the present disclosure is configured to configure only one PUCCH resource set, and the DCI corresponding to the HARQ feedback information that is fed back on the same PUCCH resource in the same time slot is the same as the PRI included in the same time slot.
  • the DCI corresponding to the HARQ feedback information transmitted on different PUCCHs is different in PRI, and can support the terminal to use multiple PUCCHs to transmit HARQ feedback information in one slot, so that the terminal can determine whether the HARQ feedback information in the same time slot is in the time slot.
  • the transmission on the same PUCCH avoids the inconsistency of the understanding of the feedback resources between the current base station and the terminal, and particularly reduces the HARQ feedback delay for the URLLC service, thereby improving the transmission performance of the system.
  • 1 is a first display diagram of a PUCCH resource that feeds back HARQ-ACK feedback information in the same time slot in the related art
  • FIG. 2 is a second display diagram of a PUCCH resource that feeds back HARQ-ACK feedback information in the same time slot in the related art
  • FIG. 3 is a schematic flowchart of a method for transmitting a hybrid automatic repeat request according to an embodiment of the present disclosure
  • FIG. 4 is a second schematic flowchart of a method for transmitting a hybrid automatic repeat request according to an embodiment of the present disclosure
  • FIG. 5 is a schematic diagram of a first display of a PUCCH resource that feeds back HARQ-ACK feedback information in the same time slot according to an embodiment of the present disclosure
  • FIG. 6 is a second display diagram of PUCCH resources for feeding back HARQ-ACK feedback information in the same time slot according to an embodiment of the present disclosure
  • FIG. 7 is a third schematic diagram of a PUCCH resource that feeds back HARQ-ACK feedback information in the same time slot according to an embodiment of the present disclosure
  • FIG. 8 is a fourth schematic diagram showing a PUCCH resource that feeds back HARQ-ACK feedback information in the same time slot according to an embodiment of the present disclosure
  • FIG. 9 is a fifth schematic diagram showing a PUCCH resource that feeds back HARQ-ACK feedback information in the same time slot according to an embodiment of the present disclosure.
  • FIG. 10 is a sixth display diagram of PUCCH resources for feeding back HARQ-ACK feedback information in the same time slot according to an embodiment of the present disclosure
  • FIG. 11 is a structural block diagram of a terminal according to an embodiment of the present disclosure.
  • FIG. 12 is a schematic block diagram of a terminal according to an embodiment of the present disclosure.
  • FIG. 13 is a structural block diagram of a base station according to an embodiment of the present disclosure.
  • FIG. 14 is a schematic block diagram of a base station according to an embodiment of the present disclosure.
  • the HARQ-ACK feedback is supported using a dynamic codebook scheme.
  • the DCI format 1_0 includes a 2-bit count DAI; the DCI format 1_1 includes a 2-bit count DAI and a 2-bit total DAI, and the DCI format 1_0 and the DCI format 1_1 are in the 3GPP protocol.
  • the specified DCI format is the DCI format.
  • the count DAI in the downlink DCI refers to the PDSCH transmission and DCI scheduled by all DCI formats 1_0 or DCI format 1_1 in the feedback window according to the order in which the first carrier index is increased and then the PDCCH detection opportunity index is increased, up to the current carrier and the current PDCCH detection opportunity.
  • the format 1_0 indicates the cumulative number of downlink SPS releases.
  • the total DAI in the downlink DCI refers to the number of PDSCH transmissions scheduled by the DCI format 1_0 or DCI format 1_1 and the number of downlink SPS releases indicated by the DCI format 1_1 in the feedback window, which will be updated one by one. .
  • the feedback window is a set of M PDCCH detection opportunities.
  • the UE may determine a PDCCH detection opportunity set for DCI format 1_0 or DCI format 1_1 transmission, corresponding to The DCI scheduled PDSCH or SPS release feedback HARQ-ACK on the same PUCCH.
  • the time slot in which the HARQ-ACK feedback information is located and the PUCCH resource used in the feedback slot pass through higher layer signaling and/or DCI Different information fields indicate ok.
  • the high layer signaling configures one or a maximum of eight HARQ timing values to the terminal, and determines a transmission time slot of the HARQ-ACK feedback information by using the 3-bit HARQ timing indication information included in the DCI.
  • the base station allocates 16 PUCCH resources to the terminal through high layer signaling before the RRC connection is established. After the RRC connection is established, the base station configures the terminal with a maximum of 4 PUCCH resource sets through RRC signaling.
  • the first PUCCH resource set is used; if the number of UCI bits transmitted by the terminal is greater than 2 and less than or equal to N2, the second PUCCH resource set is used; if the UCI bit number transmitted by the terminal is greater than If N2 is less than or equal to N3, a third PUCCH resource set is used; if the number of UCI bits transmitted by the terminal is greater than N3 and less than or equal to 1706, a fourth PUCCH resource set is used; wherein N2 and N3 are values configured by RRC signaling.
  • a maximum of 32 PUCCH resources are included in the first PUCCH resource set, and a maximum of 8 PUCCH resources are included in other PUCCH resource sets.
  • the base station determines, by using the 3-bit PUCCH resource indication information included in the DCI, the PUCCH resource used by the HARQ-ACK feedback; if the number of PUCCH resources in the PUCCH resource set is greater than 8, the base station
  • the PUCCH resource used for HARQ-ACK feedback is implicitly determined by the 3-bit PUCCH resource indication information included in the DCI and the minimum control channel element CCE number of the PDCCH where the DCI is located.
  • An embodiment of the present disclosure provides a method for transmitting a hybrid automatic repeat request, which is applied to a terminal. As shown in FIG. 3, the transmission method includes:
  • Step 301 Determine a physical uplink control channel PUCCH resource set configured for the terminal, where the PUCCH resource set only includes PUCCH resources using PUCCH format 0 and PUCCH format 1.
  • the terminal When the terminal is configured to use the dynamic hybrid automatic repeat request HARQ feedback codebook, if the multiple physical uplink control channel PUCCH is used to transmit the HARQ feedback information in the same time slot, the base station is determined to be a physical uplink control channel configured by the terminal. PUCCH resource collection.
  • the transmission method of the embodiment of the present disclosure is a transmission method used for the URLLC service.
  • the base station configures only one PUCCH resource set for the terminal, that is, only supports the UE to transmit 1 or 2 bits of HARQ feedback information.
  • the foregoing PUCCH resource set is a PUCCH resource set configured by the base station by using high layer signaling.
  • the foregoing HARQ feedback information includes HARQ feedback information corresponding to multiple DCI scheduled PDSCH transmissions or HARQ feedback information corresponding to multiple semi-persistent scheduling SPS releases indicated by DCI.
  • the HARQ feedback information is HARQ-ACK or HARQ-NACK.
  • Step 302 Determine a PRI according to a physical uplink control channel resource included in the downlink control information DCI, determine a target PUCCH resource used by the DCI feedback information corresponding to the DCI in the PUCCH resource set, and send the target PUCCH resource on the target PUCCH resource.
  • HARQ feedback information
  • the DCI corresponding to the HARQ feedback information transmitted on the same PUCCH resource in the same time slot includes the same PRI, and the DCI corresponding to the HARQ feedback information transmitted on different PUCCHs in the same time slot is different.
  • the above DCI is transmitted using DCI format 1-0 and/or DCI format 1-1.
  • the method for transmitting a hybrid automatic repeat request in the embodiment of the present disclosure is the same as the PRI included in the DCI corresponding to the HARQ feedback information fed back on the same PUCCH resource in the same time slot by configuring only one PUCCH resource set.
  • the DCI corresponding to the HARQ feedback information transmitted on the different PUCCHs in the same time slot is different from the PRI, and can support the terminal to use the multiple PUCCHs to transmit the HARQ feedback information in one slot, so that the terminal can determine the HARQ feedback information in the same time slot.
  • the HARQ feedback delay is reduced for the URLLC service, thereby improving the transmission performance of the system.
  • the foregoing determining, according to the downlink control information, the physical uplink control channel resource indication PRI, the target PUCCH resource used by the HARQ feedback information corresponding to the DCI in the PUCCH resource set includes:
  • determining the PRI is the same among the multiple DCIs One or more sets of DCI;
  • one PUCCH is determined as the target PUCCH resource in the PUCCH resource set according to the PRI included in the specified DCI.
  • the specified DCI is the first or last DCI detected by the terminal in the order of increasing the carrier index; or the designated DCI is the first or last detected by the terminal in the order of increasing the PDCCH detection opportunity index.
  • a DCI is the first or last DCI detected by the terminal in the order of increasing the carrier index; or the designated DCI is the first or last detected by the terminal in the order of increasing the PDCCH detection opportunity index.
  • At most two time division multiplexed PUCCHs in the one time slot are used to simultaneously transmit the HARQ feedback information.
  • the foregoing transmission method in the embodiment of the present disclosure is directed to a transmission method used only for the URLLC service.
  • the HARQ-ACK corresponding to the PDSCH of the eMBB service can only pass through one slot.
  • the HARQ-ACK corresponding to the PDSCH of the URLLC service may be transmitted through one or more PUCCH resources in one slot.
  • the ACK/NACK corresponding to the two services is not multiplexed and transmitted on the same PUCCH resource.
  • the method for transmitting a hybrid automatic repeat request in the embodiment of the present disclosure is the same as the PRI included in the DCI corresponding to the HARQ feedback information fed back on the same PUCCH resource in the same time slot by configuring only one PUCCH resource set.
  • the DCI corresponding to the HARQ feedback information transmitted on the different PUCCHs in the same time slot is different from the PRI, and can support the terminal to use the multiple PUCCHs to transmit the HARQ feedback information in one slot, so that the terminal can determine the HARQ feedback information in the same time slot.
  • the HARQ feedback delay is reduced for the URLLC service, thereby improving the transmission performance of the system.
  • an embodiment of the present disclosure further provides a method for transmitting a hybrid automatic repeat request, which is applied to a base station, including:
  • Step 401 Determine a physical uplink control channel PUCCH resource set configured for the terminal, where the PUCCH resource set only includes PUCCH resources using PUCCH format 0 and PUCCH format 1.
  • the terminal When the terminal is configured to use the dynamic hybrid automatic repeat request HARQ feedback codebook, if the multiple physical uplink control channel PUCCH is used to transmit the HARQ feedback information in the same time slot, the physical uplink control channel PUCCH configured for the terminal is determined. Resource collection.
  • the transmission method of the embodiment of the present disclosure is a transmission method used for the URLLC service.
  • the base station configures only one PUCCH resource set for the terminal, that is, only supports the UE to transmit 1 or 2 bits of HARQ feedback information.
  • the foregoing PUCCH resource set is a PUCCH resource set configured by the base station by using high layer signaling.
  • the foregoing HARQ feedback information includes HARQ feedback information corresponding to multiple DCI scheduled PDSCH transmissions or HARQ feedback information corresponding to multiple semi-persistent scheduling SPS releases indicated by DCI.
  • the HARQ feedback information is HARQ-ACK or HARQ-NACK.
  • Step 402 Determine a PRI according to a physical uplink control channel resource included in the downlink control information DCI, determine a target PUCCH resource used by the DCI feedback information corresponding to the DCI in the PUCCH resource set, and receive the target PUCCH resource on the target PUCCH resource.
  • HARQ feedback information
  • the DCI corresponding to the HARQ feedback information transmitted on the same PUCCH resource in the same time slot includes the same PRI, and the DCI corresponding to the HARQ feedback information transmitted on different PUCCHs in the same time slot is different.
  • the above DCI is transmitted using DCI format 1-0 and/or DCI format 1-1.
  • the method for transmitting a hybrid automatic repeat request in the embodiment of the present disclosure is the same as the PRI included in the DCI corresponding to the HARQ feedback information fed back on the same PUCCH resource in the same time slot by configuring only one PUCCH resource set.
  • the DCI corresponding to the HARQ feedback information transmitted on the different PUCCHs in the same time slot is different from the PRI, and can support the terminal to use the multiple PUCCHs to transmit the HARQ feedback information in one slot, so that the terminal can determine the HARQ feedback information in the same time slot.
  • the HARQ feedback delay is reduced for the URLLC service, thereby improving the transmission performance of the system.
  • the foregoing determining, according to the physical uplink control channel resource indication PRI included in the downlink control information DCI, the target PUCCH resource used by the HARQ feedback information corresponding to the DCI in the PUCCH resource set includes:
  • determining the PRI is the same among the multiple DCIs
  • One or more sets of DCI; in each set of DCI, one PUCCH is determined as the target PUCCH resource in the PUCCH resource set according to the PRI included in the specified DCI.
  • the specified DCI is the first or last DCI detected by the terminal in the order of increasing the carrier index; or the designated DCI is the first or last detected by the terminal in the order of increasing the PDCCH detection opportunity index.
  • a DCI is the first or last DCI detected by the terminal in the order of increasing the carrier index; or the designated DCI is the first or last detected by the terminal in the order of increasing the PDCCH detection opportunity index.
  • At most two time division multiplexed PUCCHs in the one time slot are used to simultaneously transmit the HARQ feedback information.
  • the foregoing transmission method in the embodiment of the present disclosure is directed to a transmission method used only for the URLLC service.
  • the base station can only receive the PDSCH of the eMBB service through one PUCCH resource in one slot.
  • the corresponding HARQ-ACK the base station can receive the HARQ-ACK corresponding to the PDSCH of the URLLC service through multiple PUCCH resources in one slot.
  • the base station when the UE supports both eMBB and URLLC service transmission, the base station indicates different PUCCH feedback resources for the two services. At this time, the base station may configure more than one PUCCH resource set for the eMBB service, and if the base station configures the same first PUCCH resource set for the eMBB service and the URLLC service, when the eMBB service uses the PUCCH resource transmission in the first PUCCH resource set.
  • the base station When the information is fed back, the base station indicates different PUCs in the same time slot by indicating different PRIs in the DCI; if the base station configures a different first PUCCH resource set for the eMBB service and the URLLC service, when eMBB
  • the base station and the UE determine to use the PUCCH resource in the corresponding PUCCH resource set by using the transmitted service type.
  • the method for transmitting a hybrid automatic repeat request in the embodiment of the present disclosure is the same as the PRI included in the DCI corresponding to the HARQ feedback information fed back on the same PUCCH resource in the same time slot by configuring only one PUCCH resource set.
  • the DCI corresponding to the HARQ feedback information transmitted on the different PUCCHs in the same time slot is different from the PRI, and can support the terminal to use the multiple PUCCHs to transmit the HARQ feedback information in one slot, so that the terminal can determine the HARQ feedback information in the same time slot.
  • the HARQ feedback delay is reduced for the URLLC service, thereby improving the transmission performance of the system.
  • one terminal only supports URLLC traffic transmission, and up to two time division multiplexed PUCCH resources in one slot can be used to transmit ACK/NACK information.
  • the base station configures only one PUCCH resource set for the UE and the 8 PUCCH resources are included in the set, it is assumed that the number of slots for the PDSCH-to-HARQ-ACK detection is 1 and 2, and the time slot n to the time slot n.
  • the DCI of the PDSCH in +1 indicates that the corresponding HARQ-ACK feedback information is transmitted in the slot n+2.
  • UE specific feedback is divided into the following different situations:
  • Case A As shown in FIG. 5, in slot n and slot n+1, the C-DAI indications in the DCI corresponding to the PDSCH are 1 and 2, respectively, and the PRI indications in the DCI are both 000, therefore,
  • the feedback information of the PDSCH in the slot n and the slot n+1 is transmitted by using the first PUCCH resource in the PUCCH resource set configured by the high layer signaling;
  • Case B As shown in FIG. 6, in the slot n to the slot n+1, the C-DAI indication in the DCI corresponding to the PDSCH is 1, and in the slot n, the PRI indication in the DCI corresponding to the PDSCH In the slot n+1, the PRI indication in the DCI corresponding to the PDSCH is 001. Therefore, the feedback information of the PDSCH in the slot n is transmitted using the first PUCCH resource in the PUCCH resource set configured by the high layer signaling. The feedback information of the PDSCH in the slot n+1 is transmitted using the second PUCCH resource in the PUCCH resource set configured by the high layer signaling.
  • Case C As shown in FIG. 7, in slot n, the base station schedules two PDSCHs, and the C-DAI indications in the corresponding DCI are 1 and 2, respectively, and the PRI indications are all 000, in the slot n+1.
  • the first PUCCH resource in the resource set is transmitted, and the feedback information of the two PDSCHs in the slot n+1 is transmitted by using the second PUCCH resource in the PUCCH resource set configured by the high layer signaling;
  • Case D As shown in FIG. 8, in the slot n, the base station schedules two PDSCHs on two carriers, and the C-DAI indications in the corresponding DCI are 1 and 2, respectively, and the PRI indications are all 000. In slot n+1, the base station schedules two PDSCHs on two carriers, the C-DAI indications in the corresponding DCI are 1 and 2, respectively, and the ARI indications are all 001. Therefore, two PDSCHs in slot n The feedback information is transmitted by using the first PUCCH resource in the PUCCH resource set configured by the high layer signaling, and the feedback information of the two PDSCHs in the slot n+1 is transmitted by using the second PUCCH resource in the PUCCH resource set configured by the high layer signaling. .
  • a terminal supports both eMBB service and URLLC service transmission, and can determine in some way which transmission of the PDSCH is for which service.
  • the terminal has up to two time division multiplexed PUCCH resources in one slot for transmitting ACK/NACK information.
  • the base station When configuring a PUCCH resource, the base station has the following two methods:
  • Manner 1 The eMBB and the URLLC are not distinguished when the resource is configured.
  • the base station configures two PUCCH resource sets for the UE and each of the sets includes 8 PUCCH resources, where the first PUCCH resource set is used to transmit the ACK of 1 to 2 bits. /NACK information, the second PUCCH resource set is used to transmit ACK/NACK information greater than 2 bits.
  • the eMBB and the URLLC are distinguished when the resource is configured.
  • the base station configures two PUCCH resource sets for the eMBB service of the UE, and each of the sets includes 8 PUCCH resources, where the first PUCCH resource set is used for transmitting 1-2 bits.
  • ACK/NACK information the second PUCCH resource set is used to transmit ACK/NACK information greater than 2 bits; and a set of PUCCH resource sets are additionally configured for the URLLC service, for transmitting 1-2/bit ACK/NACK information;
  • the base station when configuring the number of slots in the PDSCH to HARQ-ACK feedback interval, the base station also has the following two methods:
  • Manner 1 The eMBB and the URLLC are not distinguished in the configuration, and the number of slots in which the base station configures the PDSCH to the HARQ-ACK feedback interval for the UE is 1 to 8;
  • Manner 2 The eMBB and the URLLC are distinguished when the resource is configured.
  • the number of slots for the PDSCH to HARQ-ACK feedback interval is 1 to 8 for the eMBB service of the UE.
  • the number of slots for the feedback interval of the URLSCH service from the PDSCH to the HARQ-ACK is 1 to 2;
  • the base station indicates that the HARQ-ACK feedback information corresponding to the PDSCH in slot n to slot n+7 is transmitted in slot n+8.
  • UE specific feedback is divided into the following different situations:
  • Case A As shown in FIG. 9, in the slot n, the slot n+2, and the slot n+6, the base station schedules the PDSCH for transmitting the eMBB service, and the PRIs in the corresponding DCI are 000, 011, and 111, respectively. In the slot n+6 and the slot n+7, the base station schedules the PDSCH for transmitting the URLLC service, and the PRI in the corresponding DCI is 000.
  • the eMBB service in the feedback window corresponding to the slot n+8, since the last DCI detected by the UE is the DCI corresponding to the PDSCH transmitted in the slot n+6, the DCI corresponding to the PDSCH transmitted in the slot n+6 is used.
  • the PUCCH resource performs feedback. Since the number of feedback bits is greater than 2, the terminal uses the eighth PUCCH resource in the PUCCH resource set 2 (which is an eMBB-dedicated resource set) for feedback; for the URLLC service, in the slot n+6 and the slot In n+7, the C-DAI indications in the DCI corresponding to the two PDSCHs received by the UE are 1 and 2, respectively, and the PRI indications in the DCI are all 000, therefore, the slots n+6 and the slots n+7
  • the feedback information of the PDSCH of the URLLC service uses the first PUCCH resource set configured by the high layer signaling (ie, the resource set 1, which may be a URLLC-specific resource set, or the first PUCCH in the eMBB and the URLLC common resource set). Resource transfer.
  • Case B As shown in FIG. 10, in the slot n, the slot n+2, and the slot n+6, the base station schedules the PDSCH transmitting the eMBB service, and the PRIs in the corresponding DCI are 000, 011, and 111, respectively. In the slot n+6 and the slot n+7, the base station schedules the PDSCH for transmitting the URLLC service, and the PRIs in the corresponding DCI are 000 and 001, respectively.
  • the eMBB service in the feedback window corresponding to the slot n+8, since the last DCI detected by the UE is the DCI corresponding to the PDSCH transmitted in the slot n+6, the DCI corresponding to the PDSCH transmitted in the slot n+6 is used.
  • the PUCCH resource performs feedback. Since the number of feedback bits is greater than 2, the terminal uses the eighth PUCCH resource in the second PUCCH resource set (resource set 2, which is an eMBB dedicated resource set) configured by the high layer signaling to feed back; for URLLC
  • the C-DAI indication in the DCI corresponding to the two PDSCHs received by the UE is 1, and the PRI indications in the DCI are 000 and 001, respectively.
  • the feedback information of the PDSCH in the slot n+6 is transmitted using the PUCCH resource set configured by the higher layer signaling (which may be a URLLC-dedicated resource set or a resource set common to the eMBB and the URLLC), and the slot n+
  • the feedback information of the PDSCH in 7 is transmitted using the second PUCCH resource in the PUCCH resource set configured by the higher layer signaling.
  • the transmission method of the embodiment of the present disclosure is configured to configure only one PUCCH resource set, and the DCI corresponding to the HARQ feedback information corresponding to the feedback on the same PUCCH resource in the same time slot is the same as the PRI included in the same time slot.
  • the DCI corresponding to the HARQ feedback information transmitted on different PUCCHs is different, and the terminal can support the terminal to use multiple PUCCHs to transmit HARQ feedback information in one slot, so that the terminal can determine whether the HARQ feedback information in the same time slot is in the time slot.
  • the transmission on the same PUCCH avoids the situation that the understanding of the feedback resources is inconsistent between the current base station and the terminal, and in particular, the HARQ feedback delay is reduced for the URLLC service, thereby improving the transmission performance of the system.
  • an embodiment of the present disclosure further provides a terminal, including: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor, the processor executing the program
  • a terminal including: a transceiver, a memory, a processor, and a program stored on the memory and executable on the processor, the processor executing the program
  • PUCCH resource set includes only PUCCH resources using PUCCH format 0 and PUCCH format 1;
  • the DCI corresponding to the HARQ feedback information transmitted on the same PUCCH resource in the same time slot includes the same PRI, and the DCI corresponding to the HARQ feedback information transmitted on different PUCCHs in the same time slot is different.
  • the bus architecture can include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 1100 and various circuits of memory represented by memory 1120.
  • 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.
  • the transceiver 1110 can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium.
  • the user interface 1130 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 1100 is responsible for managing the bus architecture and general processing, and the memory 1120 can store data used by the processor 1100 in performing operations.
  • the HARQ feedback information includes HARQ feedback information corresponding to multiple DCI scheduled PDSCH transmissions or HARQ feedback information corresponding to multiple semi-persistent scheduling SPS releases indicated by DCI.
  • the processor 1100 is further configured to read a program in the memory 1120, and perform the following steps:
  • determining the PRI is the same among the multiple DCIs One or more sets of DCI;
  • one PUCCH is determined as the target PUCCH resource in the PUCCH resource set according to the PRI included in the specified DCI.
  • the specified DCI is the first or last DCI detected by the terminal in the order of increasing the carrier index
  • the specified DCI is the first or last DCI detected by the terminal in the order that the PDCCH detection opportunity index is increased.
  • a computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements the following steps:
  • PUCCH resource set includes only PUCCH resources using PUCCH format 0 and PUCCH format 1;
  • the DCI corresponding to the HARQ feedback information transmitted on the same PUCCH resource in the same time slot includes the same PRI, and the DCI corresponding to the HARQ feedback information transmitted on different PUCCHs in the same time slot is different.
  • an embodiment of the present disclosure further provides a terminal, including:
  • a first determining module 1201, configured to determine a physical uplink control channel PUCCH resource set configured for the terminal, where the PUCCH resource set only includes a PUCCH resource that uses PUCCH format 0 and PUCCH format 1;
  • the sending module 1202 is configured to determine, according to the physical uplink control channel resource indication PRI included in the downlink control information DCI, the target PUCCH resource used by the DCI feedback information corresponding to the DCI in the PUCCH resource set, and in the target PUCCH Sending HARQ feedback information on the resource;
  • the DCI corresponding to the HARQ feedback information transmitted on the same PUCCH resource in the same time slot includes the same PRI, and the DCI corresponding to the HARQ feedback information transmitted on different PUCCHs in the same time slot is different.
  • the HARQ feedback information includes HARQ feedback information corresponding to multiple DCI scheduled PDSCH transmissions or HARQ feedback information corresponding to multiple semi-persistent scheduling SPS releases indicated by DCI.
  • the sending module 1202 includes:
  • a first determining submodule configured to: when the HARQ-ACK information corresponding to the PDSCH transmission of the multiple DCI scheduling or the HARQ-ACK information corresponding to the SPS release indicated by the multiple DCI is fed back in the same time slot, Among a plurality of DCIs, one or more sets of DCIs having the same PRI are determined;
  • a second determining submodule configured to determine, in each group of DCIs, one PUCCH as the target PUCCH resource in the PUCCH resource set according to the PRI included in the specified DCI.
  • the specified DCI is the first or last DCI detected by the terminal in the order of increasing the carrier index
  • the specified DCI is the first or last DCI detected by the terminal in the order that the PDCCH detection opportunity index is increased.
  • only one PUCCH resource set is configured, and the DCI corresponding to the HARQ feedback information that is fed back on the same PUCCH resource in the same time slot is the same as the PRI, and the different PUCCHs in the same time slot.
  • the DCI corresponding to the uplink HARQ feedback information includes different PRIs, and can support the terminal to use multiple PUCCHs to transmit HARQ feedback information in one slot, so that the terminal can determine whether the HARQ feedback information in the same time slot is in the same time slot.
  • the transmission on a PUCCH avoids the inconsistency of the understanding of the feedback resources between the current base station and the terminal, and particularly reduces the HARQ feedback delay for the URLLC service, thereby improving the transmission performance of the system.
  • an embodiment of the present disclosure further provides a base station, including a memory 1320, a processor 1300, a transceiver 1310, a bus interface, and a program stored on the memory 1320 and executable on the processor 1300.
  • the processor 1300 is configured to read a program in the memory 1320 and perform the following process:
  • PUCCH resource set includes only PUCCH resources using PUCCH format 0 and PUCCH format 1;
  • the DCI corresponding to the HARQ feedback information transmitted on the same PUCCH resource in the same time slot includes the same PRI, and the DCI corresponding to the HARQ feedback information transmitted on different PUCCHs in the same time slot is different.
  • the bus architecture may include any number of interconnected buses and bridges, specifically linked by one or more processors represented by processor 1300 and various circuits of memory represented by memory 1320.
  • 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 1310 can be a plurality of components, including a transmitter and a transceiver, providing means for communicating with various other devices on a transmission medium.
  • the processor 1300 is responsible for managing the bus architecture and general processing, and the memory 1320 can store data used by the processor 1300 in performing operations.
  • the HARQ feedback information includes HARQ feedback information corresponding to multiple DCI scheduled PDSCH transmissions or multiple HARQ feedback information corresponding to SPS release indicated by DCI.
  • determining the PRI is the same among the multiple DCIs One or more sets of DCI;
  • one PUCCH is determined as the target PUCCH resource in the PUCCH resource set according to the PRI included in the specified DCI.
  • the specified DCI is the first or last DCI detected by the terminal in the order of increasing the carrier index
  • the specified DCI is the first or last DCI detected by the terminal in the order that the PDCCH detection opportunity index is increased.
  • a computer readable storage medium having stored thereon a computer program that, when executed by a processor, implements the following steps:
  • PUCCH resource set includes only PUCCH resources using PUCCH format 0 and PUCCH format 1;
  • the DCI corresponding to the HARQ feedback information transmitted on the same PUCCH resource in the same time slot includes the same PRI, and the DCI corresponding to the HARQ feedback information transmitted on different PUCCHs in the same time slot is different.
  • an embodiment of the present disclosure further provides a base station, including:
  • a second determining module 1401, configured to determine a physical uplink control channel PUCCH resource set configured for the terminal, where the PUCCH resource set includes only PUCCH resources using PUCCH format 0 and PUCCH format 1;
  • the receiving module 1402 is configured to determine, according to a physical uplink control channel resource indication PRI included in the downlink control information DCI, a target PUCCH resource used by the DCI feedback information corresponding to the DCI in the PUCCH resource set, and in the target PUCCH Receiving HARQ feedback information on the resource;
  • the DCI corresponding to the HARQ feedback information transmitted on the same PUCCH resource in the same time slot includes the same PRI, and the DCI corresponding to the HARQ feedback information transmitted on different PUCCHs in the same time slot is different.
  • the HARQ feedback information includes HARQ feedback information corresponding to multiple DCI scheduled PDSCH transmissions or multiple HARQ feedback information corresponding to SPS release indicated by DCI.
  • the receiving module 1402 includes:
  • a third determining submodule configured to: when the HARQ-ACK information corresponding to the PDSCH transmission of the multiple DCI scheduling or the HARQ-ACK information corresponding to the SPS release indicated by the multiple DCI is fed back in the same time slot, Among a plurality of DCIs, one or more sets of DCIs having the same PRI are determined;
  • a fourth determining submodule configured to determine, in each set of DCI, one PUCCH as the target PUCCH resource in the PUCCH resource set according to the PRI included in the specified DCI.
  • the specified DCI is the first or last DCI detected by the terminal in the order of increasing the carrier index
  • the specified DCI is the first or last DCI detected by the terminal in the order that the PDCCH detection opportunity index is increased.
  • the base station of the embodiment of the present disclosure configures only one PUCCH resource set, and the DCI corresponding to the HARQ feedback information that is fed back on the same PUCCH resource in the same time slot contains the same PRI, and is different in the same time slot.
  • the DCI corresponding to the HARQ feedback information transmitted on the PUCCH is different, and the terminal can support the terminal to use multiple PUCCHs to transmit HARQ feedback information in one slot, so that the terminal can determine whether the HARQ feedback information in the same time slot is in the time slot.
  • the transmission on the same PUCCH avoids the inconsistency of the understanding of the feedback resources between the current base station and the terminal, and particularly reduces the HARQ feedback delay for the URLLC service, thereby improving the transmission performance of the system.

Abstract

La présente invention concerne un procédé de transmission de requête de répétition automatique hybride, un terminal et une station de base. Le procédé de transmission selon la présente invention consiste : à déterminer un ensemble de ressources PUCCH configuré pour un terminal, l'ensemble de ressources PUCCH comprenant uniquement des ressources PUCCH utilisant un format PUCCH 0 et un format PUCCH 1; et selon un PRI inclus dans des informations de commande en liaison descendante (DCI), à déterminer, dans l'ensemble de ressources PUCCH, une ressource PUCCH cible utilisée par des informations de rétroaction HARQ correspondant aux DCI et à envoyer les informations de rétroaction HARQ sur la ressource PUCCH cible, des PRI inclus dans des DCI correspondant à des informations de rétroaction HARQ transmises sur la même ressource PUCCH dans le même créneau temporel étant identiques et des PRI inclus dans des DCI correspondant à des informations de rétroaction HARQ transmises sur différents PUCCH dans le même créneau temporel étant différents.
PCT/CN2019/084907 2018-05-18 2019-04-29 Procédé de transmission de requête de répétition automatique hybride, terminal et station de base WO2019218869A1 (fr)

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