WO2022213528A1 - 混合自动重传请求反馈传输方法、终端、基站和通信系统 - Google Patents

混合自动重传请求反馈传输方法、终端、基站和通信系统 Download PDF

Info

Publication number
WO2022213528A1
WO2022213528A1 PCT/CN2021/115060 CN2021115060W WO2022213528A1 WO 2022213528 A1 WO2022213528 A1 WO 2022213528A1 CN 2021115060 W CN2021115060 W CN 2021115060W WO 2022213528 A1 WO2022213528 A1 WO 2022213528A1
Authority
WO
WIPO (PCT)
Prior art keywords
carrier
harq feedback
time unit
pdsch
indicated
Prior art date
Application number
PCT/CN2021/115060
Other languages
English (en)
French (fr)
Inventor
南方
朱剑驰
佘小明
陈鹏
Original Assignee
中国电信股份有限公司
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by 中国电信股份有限公司 filed Critical 中国电信股份有限公司
Publication of WO2022213528A1 publication Critical patent/WO2022213528A1/zh

Links

Images

Classifications

    • 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
    • H04L1/1607—Details of the supervisory signal
    • H04L1/1671—Details of the supervisory signal the supervisory signal being transmitted together with control information
    • 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
    • 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
    • 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
    • H04L5/0078—Timing of allocation
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/04—Wireless resource allocation

Definitions

  • the present disclosure relates to the field of wireless communication, and in particular, to a hybrid automatic repeat request feedback transmission method, terminal, base station and communication system.
  • the time domain position of its HARQ feedback is determined by the offset indicated by the PDSCH carried in the activated DCI to the HARQ feedback timing indicator. If PDSCH transmission ends in time slot or subslot n, the corresponding HARQ feedback starts transmission in time slot or subslot n+K1, where K1 is the offset indicated by the PDSCH to HARQ feedback timing indicator.
  • K1 is configured by radio resource control (Radio Resource Control, RRC) signaling.
  • RRC Radio Resource Control
  • HARQ feedback is usually transmitted through a Physical Uplink Control Channel (PUCCH).
  • HARQ feedback also called HARQ-ACK feedback, includes a positive acknowledgement (ACKnowledgment, ACK) or a negative acknowledgement (Negative ACKnowledgment, NACK) to the PDSCH.
  • ACK positive acknowledgement
  • NACK negative acknowledgement
  • the fifth generation mobile communication technology (5th Generation mobile networks, 5th Generation wireless systems or 5th-Generation, 5G) new air interface (New Radio, NR) is introduced for ultra-reliable and low-latency communication (Ultra-reliable and Low Latency Communication, URLLC)
  • 5G new Radio
  • NR new Radio
  • ULC Ultra-reliable and Low Latency Communication
  • a shorter SPS period (minimum 1 slot).
  • the time domain position of the HARQ-ACK feedback is determined according to the offset indicated by the PDSCH to HARQ feedback timing indicator carried in the DCI of the activated SPS or the offset of the RRC signaling configuration, it will cause the SPS PDSCH HARQ feedback often collides with symbols that cannot be used for uplink, so the transmission of the HARQ feedback is discarded, resulting in unnecessary PDSCH retransmission.
  • the PDSCH dynamically scheduled by DCI at the end of time slot or subslot n, or the Physical Downlink Control Channel (PDCCH) used for SPS PDSCH release at the end of time slot or subslot n it carries its The PUCCH fed back by HARQ starts to be sent at time slot or subslot n+K1, where K1 is the offset indicated by the feedback timing indicator from PDSCH in DCI to HARQ.
  • PDCH Physical Downlink Control Channel
  • TDD time division duplex
  • FDD frequency division duplex
  • the embodiments of the present disclosure provide how to determine the carrier for transmitting PUCCH and the time domain position for transmitting PUCCH on the carrier in the scenario of multiple uplink carriers, so that the carrier for transmitting PUCCH is indicated by DCI or MAC signaling and the carrier for transmitting PUCCH on the carrier is determined.
  • the HARQ feedback transmission scheme of time domain location is completely feasible. In this way, the collision between HARQ feedback and symbols that cannot be used for uplink in the TDD system can be avoided to a certain extent, thereby avoiding the waste of resources caused by PDSCH or PDCCH retransmission caused by discarding HARQ feedback to a certain extent, and reducing the need for successful PDSCH or PDCCH transmission. time delay.
  • Some embodiments of the present disclosure propose a method for transmitting HARQ feedback, including: determining a carrier indicated by DCI or MAC signaling for transmitting HARQ feedback, where the HARQ feedback is feedback to PDSCH or PDCCH; determining the The number of time units K1 that differs from the time unit at the end of the PDSCH or PDCCH to the first time unit, where the first time unit is the time unit that starts to transmit the HARQ feedback on the default carrier; The time unit corresponding to the first time unit starts to send or receive the HARQ feedback.
  • the subcarrier interval referenced by the time difference unit is the subcarrier interval of a default carrier
  • the default carrier is a Pcell carrier, or a PScell carrier, or a PUCCH-Scell carrier, or the indicated carrier for The carrier on which the HARQ feedback is transmitted.
  • starting to send or receive the HARQ feedback on the indicated carrier at a time unit corresponding to the first time unit includes: starting on the indicated carrier no earlier than The first time unit of the start time of the first time unit on the default carrier is determined as the time unit corresponding to the first time unit.
  • the first time unit corresponding to K1 equal to 0 is the time between the default carrier and the PDSCH or The time unit in which the PDSCH overlaps; if the subcarrier spacing of the carrier where the PDSCH or PDCCH is located is smaller than the subcarrier spacing of the default carrier, the first time unit corresponding to K1 equal to 0 is the end of the PDSCH or PDSCH on the default carrier The time unit in which the moment is located.
  • the default carrier is the indicated carrier for transmitting HARQ feedback
  • the set of K1 configured by RRC signaling is different, and the The same set contains the same number of K1 values.
  • the default carrier is the indicated carrier for transmitting HARQ feedback
  • the set of K1 configured by RRC signaling is different, and the The number of values of K1 contained in the same set is different; the total number of bits of the PUCCH resource indicator in DCI and the feedback timing indicator from PDSCH to HARQ is fixed by the protocol or configured by signaling.
  • the feedback timing from PDSCH to HARQ The indicator is used to indicate the value of K1 in the set of K1.
  • the indicated carrier for transmitting HARQ feedback and the K1 are the DCI or MAC signaling In the same field, or the same field, or the same information element indicated.
  • the carrier used for transmitting HARQ feedback and the K1 are The same field, or the same field, or the first value of the same information element indicates; within the duration of one time unit after the minimum subcarrier interval as a reference, the carrier used for transmitting HARQ feedback and the K1 is indicated by the second value of the same field, or the same field, or the same information element; the second value is greater than the first value.
  • the second time unit is the number of time units that can be used for transmitting HARQ
  • the first time unit is included in the second time unit The duration of the time unit.
  • determining a carrier indicated by the DCI for transmitting HARQ feedback includes: determining a PUCCH resource set configured by RRC signaling and a carrier corresponding to each PUCCH resource in the PUCCH resource set; determining a PUCCH resource indicator in the DCI The indicated PUCCH resource in the PUCCH resource set is determined, and the carrier corresponding to the indicated PUCCH resource is determined as the indicated carrier for transmitting HARQ feedback.
  • determining the carrier indicated by the MAC signaling for transmitting the HARQ feedback includes: when the HARQ feedback codebook only includes the HARQ feedback of the SPS PDSCH, determining the carrier indicated by the MAC signaling for transmitting the HARQ feedback.
  • K1 only counts available time units for HARQ feedback; the available time units for HARQ feedback do not include symbols that cannot be used for uplink transmission.
  • the method when performed by the base station, includes:
  • the method when the method is executed by the terminal, the method includes:
  • the HARQ feedback starts to be sent at the time unit corresponding to the first time unit on the indicated carrier.
  • Some embodiments of the present disclosure provide a terminal including: a memory; and a processor coupled to the memory, the processor configured to perform hybrid automatic repeat request feedback transmission based on instructions stored in the memory The method, wherein an operation of sending HARQ feedback is performed in the step of sending or receiving the HARQ feedback.
  • Some embodiments of the present disclosure provide a base station including: a memory; and a processor coupled to the memory, the processor configured to perform hybrid automatic repeat request feedback transmission based on instructions stored in the memory The method, wherein an operation of receiving HARQ feedback is performed in the step of sending or receiving the HARQ feedback.
  • Some embodiments of the present disclosure provide a communication system, including: the aforementioned terminal and the aforementioned base station.
  • Some embodiments of the present disclosure provide a non-transitory computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, implements the steps of the hybrid automatic repeat request feedback transmission method.
  • FIG. 1a shows a schematic diagram of switching a carrier for transmitting PUCCH in the related art.
  • FIG. 1b shows a schematic flowchart of a HARQ feedback transmission method according to some embodiments of the present disclosure.
  • FIG. 2a shows a schematic diagram of the first method of HARQ feedback transmission according to some embodiments of the present disclosure.
  • FIG. 2b shows a schematic diagram of a first method of HARQ feedback transmission according to other embodiments of the present disclosure.
  • FIG. 3a shows a schematic diagram of a second method of HARQ feedback transmission according to some embodiments of the present disclosure.
  • FIG. 3b shows a schematic diagram of DCI bits in HARQ feedback transmission method 2 according to some embodiments of the present disclosure.
  • FIG. 4 shows a schematic diagram of a third method of HARQ feedback transmission according to some embodiments of the present disclosure.
  • FIG. 5 shows a schematic diagram of a terminal according to some embodiments of the present disclosure.
  • Figure 6 shows a schematic diagram of a base station of some embodiments of the present disclosure.
  • FIG. 7 shows a schematic diagram of a communication system of some embodiments of the present disclosure.
  • 5G NR supports flexible Time Division Duplex (TDD) frame structure configuration.
  • the symbols of each time slot can be configured into three types: downlink symbols, uplink symbols and flexible symbols. Downlink symbols can only be used for downlink transmission, and uplink symbols can only be used for uplink transmission. Whether flexible symbols are used for uplink transmission or downlink transmission depends on whether the base station schedules downlink transmission or uplink transmission on the flexible symbol.
  • the configuration method of the symbol type adopts a combination of semi-static Radio Resource Control (RRC) configuration and dynamic downlink control information (Downlink Control Information, DCI) configuration.
  • RRC Radio Resource Control
  • DCI Downlink Control Information
  • the RRC configuration supports cell-specific uplink and downlink configurations and terminal (User Equipment, UE)-specific uplink and downlink configurations, and configures the uplink and downlink directions of symbols with symbols as the smallest granularity.
  • the UE-specific uplink and downlink configuration is used to configure symbols that are not configured in the cell-specific uplink and downlink configuration.
  • Semi-static RRC configuration with no configured symbols can be regarded as semi-statically configured flexible symbols.
  • the DCI configuration supports the use of the slot format indicator (Slot Format Indicator, SFI) carried by the DCI format 2_0, or the direction of the symbol is determined directly by scheduling the uplink and downlink data through the DCI.
  • SFI Slot Format Indicator
  • the symbol type indicated by the SFI is one of the three types mentioned above.
  • Semi-statically configured flexible symbols can be scheduled by SFI or DCI to determine the symbol direction.
  • the embodiments of the present disclosure provide how to determine the carrier for transmitting PUCCH and the time domain position for transmitting PUCCH on the carrier in the scenario of multiple uplink carriers, so that the carrier for transmitting PUCCH is indicated by DCI or MAC signaling and the carrier for transmitting PUCCH on the carrier is determined.
  • the HARQ feedback transmission scheme of time domain location is completely feasible. In this way, the collision between HARQ feedback and symbols that cannot be used for uplink in the TDD system is avoided to a certain extent, and to a certain extent, the HARQ feedback is discarded and the resources brought by PDSCH or Physical Downlink Control Channel (PDCCH) retransmission are avoided. Waste and reduce the delay required for successful PDSCH or PDCCH transmission.
  • PDSCH Physical Downlink Control Channel
  • the PUCCH is switched to the second carrier for transmission, thereby
  • the DCI can indicate a smaller time offset K1 from PDSCH to HARQ feedback, so that the delay of HARQ feedback can be reduced.
  • HARQ feedback of SPS PDSCH for example, when the first carrier cannot be used for uplink transmission in the time domain position of HARQ feedback determined by the PDSCH-to-HARQ feedback timing indicator carried in the DCI of the activated SPS, switch the PUCCH to the second carrier. Sending on multiple carriers can avoid resource waste caused by discarding HARQ feedback.
  • FIG. 1b shows a schematic flowchart of the HARQ feedback transmission method according to some embodiments of the present disclosure.
  • the HARQ feedback transmission method 100 of this embodiment includes: steps 110-130, which can be executed by a base station or a terminal, and is applicable to a HARQ feedback transmission scenario of multiple uplink carriers.
  • step 110 a carrier indicated by DCI or medium access control (Media Access Control, MAC) signaling for transmitting HARQ feedback is determined, where the HARQ feedback is feedback on PDSCH or PDCCH.
  • DCI Downlink Control
  • MAC Medium Access Control
  • the carrier used for transmitting the HARQ feedback is also the carrier for transmitting the PUCCH, which is referred to as the PUCCH carrier for short.
  • step 120 determine the number of time units K1 that differs from the time unit when the PDSCH or the PDCCH ends to the first time unit, where the first time unit is the time unit that starts transmitting the HARQ feedback on the default carrier .
  • HARQ feedback is feedback on PDSCH, determine the number of time units K1 that differs from the time unit at the end of PDSCH to the first time unit; if the HARQ feedback is feedback on PDCCH, determine the time unit at the end of PDCCH to the first time unit The number of time units K1 that differs between them.
  • HARQ feedback is feedback to PDCCH.
  • K1 represents the time unit offset from the time unit at the end of the PDSCH or PDCCH to the first time unit, which is referred to as time unit offset or offset for short.
  • K1 only counts the time units available for HARQ feedback.
  • the HARQ feedback available time unit does not include symbols that cannot be used for uplink transmission.
  • Symbols that cannot be used for uplink transmission include, for example, downlink symbols semi-statically configured by RRC signaling, symbols where Synchronization Signal Physical Broadcast Channel Block (Synchronization Signal Physical Broadcast Channel Block, SS PBCH Block or SSB) is located, and PDCCH Control Resource Set 0 (Control Resource Set# 0, the symbol where CORESET#0) is located.
  • Symbols that can be used for uplink transmission include, for example, semi-statically configured uplink symbols.
  • the symbols that can be used for uplink transmission include, for example, semi-statically configured uplink symbols and semi-statically configured flexible symbols.
  • Time units are, for example, slots or subslots.
  • the subcarrier interval referenced by the time unit of the difference is the subcarrier interval of the default carrier
  • the default carrier is, for example, a primary cell (Primary Cell, Pcell) carrier, or a primary secondary cell (Primary Secondary Cell Group Cell, Primary SCG Cell, PScell) carrier, or PUCCH Secondary Cell (PUCCH Secondary Cell, PUCCH-Scell) carrier, or the indicated carrier for transmitting HARQ feedback.
  • step 130 start sending or receiving the HARQ feedback on the indicated carrier at the time unit corresponding to the first time unit.
  • the operation of sending the HARQ feedback in step 130 is performed; when the method 100 is performed by the base station, the operation of receiving the HARQ feedback in step 130 is performed.
  • steps 110a-130a When the method 100 is executed by the base station, it specifically includes: steps 110a-130a.
  • the base station determines and indicates to the terminal a carrier for transmitting HARQ feedback through DCI or MAC signaling, where the HARQ feedback is feedback on PDSCH or PDCCH.
  • step 120a the base station determines and indicates to the terminal the number of time units K1 that is the difference between the time unit when the PDSCH or PDCCH ends and the first time unit, where the first time unit is the default carrier to start transmitting the HARQ feedback time unit.
  • step 130a the base station starts to receive the HARQ feedback on the indicated carrier at the time unit corresponding to the first time unit.
  • steps 110b-130b When the method 100 is executed by the terminal, it includes: steps 110b-130b.
  • step 110b the terminal receives the DCI or MAC signaling sent by the base station, and determines a carrier indicated by the DCI or MAC signaling for transmitting HARQ feedback, where the HARQ feedback is feedback on PDSCH or PDCCH.
  • step 120b the terminal receives the time unit number K1 that is the difference between the time unit when the PDSCH or PDCCH ends and the first time unit indicated by the base station, and determines the first time unit based on K1, and the first time unit is the default carrier The time unit in which the transmission of the HARQ feedback is started.
  • step 130b the terminal starts to send the HARQ feedback on the indicated carrier at the time unit corresponding to the first time unit.
  • the execution sequence of each step is: 110a, 110b, 120a, 120b, 130b, 130a.
  • the method 100 may be to determine one carrier in the carriers included in one PUCCH carrier group for transmitting the PUCCH, or determine one carrier for transmitting the PUCCH among the carriers included in each PUCCH carrier group in the multiple PUCCH carrier groups. PUCCH, so that multiple PUCCHs can be transmitted at the same time.
  • the method 100 can be implemented by, for example, method 1, method 2, method 3, method 4, method 5, etc., but is not limited to the listed methods. Each of these methods includes one or more embodiments.
  • a new field/field for transmitting HARQ feedback carrier indication is added to DCI, that is, a new field/field for PUCCH carrier indication, such as PUCCH carrier indication, is added to DCI.
  • the PUCCH used to transmit HARQ feedback is transmitted on the carrier indicated by the field/field of the PUCCH carrier indication.
  • the offset value K1 indicated by the feedback timing indicator from PDSCH or PDCCH to HARQ in DCI, the offset value K1 configured by RRC signaling d1-DataToUL-ACK, RRC signaling d1-DataToUL-ACK-DCI-1-2 refers to
  • the subcarrier spacing is the primary cell (Primary Cell, Pcell) carrier, or the primary secondary cell (Primary Secondary Cell Group Cell, Primary SCG Cell, PScell) carrier, or the subcarrier of the PUCCH secondary cell (PUCCH Secondary Cell, PUCCH-Scell) carrier interval.
  • the time length of K1 time slots/subslots differing from the time slot/subslot n at the end of PDSCH or PDCCH to the time slot/subslot n+K1 at which HARQ feedback on the default carrier starts transmission is Pcell/PScell /The time length of the time slot/subslot corresponding to the subcarrier spacing of the PUCCH-Scell carrier.
  • the start symbol of the time slot/sub-slot for transmitting PUCCH on the indicated PUCCH carrier is not earlier than that in the Pcell /PScell/PUCCH-Scell transmits the first slot/subslot of the start symbol of the slot/subslot of the PUCCH.
  • FIG. 2a 4 carriers with subcarrier intervals of 15KHz, 30KHz, 60KHz, and 120KHz are exemplarily shown.
  • the indicated K1 is 4.
  • the DCI indicates the PUCCH (ie, HARQ feedback) in the subcarrier If the carrier interval is 30KHz, the time slot when PUCCH starts to transmit is the time slot numbered 5 on the 30KHz carrier; if the DCI instructs PUCCH to transmit on the carrier whose subcarrier interval is 60KHz, the time slot when PUCCH starts to transmit It is the time slot numbered 10 on the 60KHz carrier; if the DCI indicates that the PUCCH is transmitted on the carrier with the subcarrier interval of 120KHz, the time slot where the PUCCH starts to transmit is the time slot numbered 20 on the 120KHz carrier; if the DCI indicates that the PUCCH is transmitted on the 120KHz carrier For transmission on a carrier with a subcarrier interval of 15KHz, the time slot at which the PUCCH starts to transmit is the time slot numbered 3 on the 15KHz carrier.
  • the indicated K1 is 6. Since the subcarrier spacing of Pcell/PScell/PUCCH-Scell is 30KHz, if the DCI indicates PUCCH (ie, HARQ feedback) is transmitted on a carrier with a subcarrier spacing of 30KHz, then the time slot where PUCCH starts to transmit is the time slot numbered 8 on a 30KHz carrier; if DCI indicates that PUCCH is transmitted on a carrier with a subcarrier spacing of 60KHz , the time slot that PUCCH starts to transmit is the time slot numbered 16 on the 60KHz carrier; if the DCI instructs the PUCCH to transmit on the carrier with a subcarrier interval of 120KHz, the time slot that PUCCH starts to transmit is the 120KHz carrier numbered 32 If the DCI indicates that the PUCCH is transmitted on a carrier with a subcarrier interval of 15KHz, the DCI indicates that the PUCCH is transmitted on a carrier with a subcarrier interval of 15KHz, the DCI indicates that the PUC
  • K1 only counts the time slot/sub-slot where the available PUCCH resource is located, that is, K1 only counts the time slot/sub-slot available for HARQ feedback.
  • the symbols that make up the available PUCCH resources do not include the downlink symbols semi-statically configured by RRC signaling, the symbols where the Synchronization Signal Physical Broadcast Channel Block (Synchronization Signal Physical Broadcast Channel Block, SS PBCH Block or SSB) is located, and the PDCCH Control Resource Set 0 (Control Resource Set#0 , the symbol where CORESET#0) is located.
  • the symbols constituting the available PUCCH resources include, for example, semi-statically configured uplink symbols.
  • the symbols constituting the available PUCCH resources include, for example, semi-statically configured uplink symbols and semi-statically configured flexible symbols.
  • the indicated K1 is 4, and if the Pcell/PScell/PUCCH-Scell numbered time slots 3 and 4 contain The symbol is a semi-statically configured downlink symbol. If the DCI indicates that the PUCCH is transmitted on a carrier with a subcarrier interval of 30KHz, and K1 starts counting from the time slot numbered 5 on the 30KHz carrier, the time slot where the PUCCH starts to transmit is the 30KHz carrier. slot number 8 above.
  • a new field/field for transmitting HARQ feedback carrier indication is added to DCI, that is, a new field/field for PUCCH carrier indication, such as PUCCH carrier indication, is added to DCI.
  • the PUCCH used to transmit HARQ feedback is transmitted on the carrier indicated by the field/field of the PUCCH carrier indication.
  • the offset value K1 indicated by the feedback timing indicator from PDSCH or PDCCH to HARQ in DCI refers to
  • the subcarrier spacing is the subcarrier spacing of the PUCCH carrier indicated by the DCI. That is, the time length of K1 time slots/subslots that differ from the time slot/subslot n at the end of PDSCH or PDCCH to the time slot/subslot n+K1 at which HARQ feedback on the carrier indicated by DCI starts to transmit is DCI
  • the time length of the slot/subslot corresponding to the subcarrier spacing of the indicated PUCCH carrier.
  • K1 only counts the time slot/sub-slot where the available PUCCH resource is located, that is, K1 only counts the time slot/sub-slot available for HARQ feedback.
  • the symbols that make up the available PUCCH resources do not include downlink symbols semi-statically configured by RRRC signaling, symbols where SSB is located, and symbols where CORESET #0 is located.
  • the symbols constituting the available PUCCH resources include, for example, semi-statically configured uplink symbols.
  • the symbols constituting the available PUCCH resources include, for example, semi-statically configured uplink symbols and semi-statically configured flexible symbols.
  • the RRC signaling dl-DataToUL-ACK or dl-DataToUL-ACK-DCI-1-2 may configure different sets of offset values for different carriers available for PUCCH transmission.
  • a set of offset values corresponding to the PUCCH carrier indicated by the DCI is used.
  • the number of offset values included in the configured offset value set is the same. In this way, it can be ensured that the number of bits of the feedback timing indicator from PDSCH to HARQ in the DCI does not change with the PUCCH carrier indicated by the DCI.
  • the number of offset values included in the configured offset value set may be different.
  • the total number of bits of the PUCCH resource indicator in the DCI and the PDSCH-to-HARQ feedback timing indicator is protocol fixed or configured by RRC signaling.
  • the feedback timing indicator from PDSCH to HARQ is used to indicate the value of the offset value in the offset value set.
  • the respective bit numbers of the PUCCH resource indicator and the PDSCH to HARQ feedback timing indicator are determined according to the PUCCH carrier indicated by the DCI.
  • the PDSCH in the DCI The number of bits of the feedback timing indicator to HARQ is The remaining bits in the total bits are the number of bits of the PUCCH resource indicator. For example, as shown in Figure 3b.
  • the number of offset values included in the configured offset value set may be different. For example, let Imax be the maximum number of K1 values included in the set of offset values K1 configured by the RRC signaling corresponding to all carriers available for PUCCH transmission; Itar get is the corresponding PUCCH carrier indicated by DCI. The number of K1 values included in the set of offset values K1 configured by RRC signaling. At this time, in some embodiments, the number of bits of the PDSCH to HARQ feedback timing indicator in the DCI is in, bits are used to indicate the value of K1 in the set of K1 configured for the PUCCH carrier indicated by the DCI, and the remaining bit value is 0.
  • the feedback timing indicator from PDSCH to HARQ in DCI adopts bits indicate the value of K1 in the K1 set configured for the PUCCH carrier indicated by the DCI; if less than Then in the PDSCH to HARQ feedback timing indicator as described Add 0 before the high-order bits or after the low-order bits of bits, until the number of bits of the PDSCH to HARQ feedback timing indicator is In this way, it can be ensured that the number of bits of the feedback timing indicator from PDSCH to HARQ in the DCI does not change with the PUCCH carrier indicated by the DCI.
  • the same field/field/information element in DCI is used to indicate the carrier of PUCCH at the same time, and the time slot with the difference between the time slot/sub-slot n at the end of PDSCH or PDCCH to the time slot/sub-slot n+K1 at the start of HARQ feedback /Number of sub-slots K1. That is, joint coding is performed on the PUCCH carrier and the time slot/subslot n at the end of PDSCH or PDCCH to the time slot/subslot n+K1 at which HARQ-ACK feedback starts. .
  • n is the slot/subslot where PDSCH ends; for SPS PDSCH release, n is the slot/subslot where PDCCH ends.
  • the difference between the time slot/sub-slot n at the end of the PDSCH or PDCCH and the time slot/sub-slot n+K1 when the HARQ-ACK feedback starts is different.
  • the subcarrier spacing of the carrier is different.
  • the joint coding only considers the slot/subslot in which the available PUCCH resources are located.
  • the symbols that make up the available PUCCH resources do not include the downlink symbols that are semi-statically configured, the symbols where the SSB is located, and the symbols where CORESET#0 is located.
  • the symbols constituting the available PUCCH resources include, for example, semi-statically configured uplink symbols.
  • the symbols constituting the available PUCCH resources include, for example, semi-statically configured uplink symbols and semi-statically configured flexible symbols.
  • the joint coding method may be: in all the subcarrier intervals of the carriers that can be used to transmit HARQ feedback, the time length of a time slot/subslot of the carrier with the smallest subcarrier interval is the time unit, and the time unit can be The adopted PUCCH carrier, and the time slot/subslot number K1 that differs from the time slot/subslot n at the end of PDSCH or PDCCH to the time slot/subslot n+K1 at the start of HARQ-ACK feedback for joint coding . After editing a time unit, edit the next time unit.
  • the carrier used for transmitting HARQ feedback and the K1 are the same domain, Either the same field, or the first value of the same information element indicates; within the duration of one time unit after taking the minimum subcarrier interval as a reference, the carrier used for transmitting HARQ feedback and the K1 are all The same field, or the same field, or the same information element is indicated by the second value; the second value is greater than the first value.
  • the time slot/sub-slot of the PUCCH indicated by all the values of the field/field/information element is the time slot/sub-slot where the PDSCH or PDCCH (for SPS PDSCH release) ends and the following time slots/sub-slots Consecutive slots/subslots.
  • the number of bits of the field/field/information element is protocol fixed or configured by RRC signaling.
  • the time slots/sub-slots of the PUCCH indicated by all values of the field/field/information element are based on the RRC signaling dl-DataToUL-ACK or dl-DataToUL-ACK-DCI-1-2 Determined slot/subslot.
  • the reference subcarrier spacing of the offset configured by the RRC signaling is the minimum subcarrier spacing.
  • the carrier at the minimum subcarrier interval can be determined according to the set of offset K1 configured by the PDSCH or PDCCH ending slot/subslot and the RRC signaling dl-DataToUL-ACK or dl-DataToUL-ACK-DCI-1-2 The set of slots/sub-slots available for PUCCH transmission.
  • the time slot/subslot of the PUCCH indicated by the field/field/information element is temporally identical to the time available for PUCCH transmission on the carrier with the smallest subcarrier spacing
  • the slots/subslots in the set of slots/subslots overlap.
  • the number of bits of the field/field/information element is fixed according to the protocol, or configured by RRC signaling, or obtained according to the number of carriers, the interval of subcarriers, and the number of time slots/subslots of the PUCCH.
  • the joint coding in one time unit may start from the carrier with the largest subcarrier spacing, and perform coding in the order of increasing the time slot/subslot where the PUCCH is located, then increasing the carrier number, and then decreasing the subcarrier spacing.
  • FIG. 4 is an example in which offset values 1 and 3 are configured for dl-DataToUL-ACK, and the numbers 0-29 in the squares are the values of the fields/fields/information elements.
  • the joint coding in one time unit may also be performed from the carrier with the smallest subcarrier interval, and in the order of increasing the time slot/subslot where the PUCCH is located, then increasing the carrier number, and then increasing the subcarrier interval. coding.
  • the joint coding in one time unit may also start from Pcell/PScell/PUCCH-Scell, and after coding Pcell/PScell/PUCCH-Scell, other carriers are coded in increasing order of carrier numbers.
  • the time slot/sub-slot where the PUCCH is located is in an increasing order.
  • Method 4 is different from method 1 or method 2 in that, in the configuration of the RRC signaling PUCCH resource, the carrier where the PUCCH (ie, the HARQ feedback) is located is configured at the same time.
  • the PUCCH carrier configuration is added to the following PUCCH resource configuration. Therefore, the PUCCH resource is determined according to the PUCCH resource indicator in the DCI, and the carrier where the PUCCH is located is also determined. That is, according to the PUCCH resource indicated by the PUCCH resource indicator in the DCI, the PUCCH resource and the PUCCH carrier can be determined at the same time.
  • the PUCCH resource configuration includes, for example, a PUCCH resource identifier, a starting physical resource block (physical resource block, PRB), frequency hopping information, format information, and the like.
  • the added PUCCH carrier configuration includes, for example, information such as a PUCCH carrier identifier.
  • the base station For the HARQ feedback of the SPS PDSCH, the base station indicates the PUCCH carrier for transmitting the HARQ feedback through MAC signaling, and the terminal determines the PUCCH carrier for transmitting the HARQ feedback according to the indication of the MAC signaling.
  • the MAC signaling includes, for example, a MAC CE (Control Element, control unit). MAC signaling is carried eg in PDSCH.
  • the HARQ feedback codebook only includes the HARQ feedback of the SPS PDSCH, and all the HARQ feedbacks are NACK, no HARQ feedback is sent, or no PUCCH is sent.
  • the HARQ feedback codebook only includes the HARQ feedback of the SPS PDSCH, some HARQ feedback is NACK, and some HARQ feedback is ACK, the PUCCH carrier indicated by the MAC CE is used.
  • the PUCCH carrier dynamically indicated by the DCI is used.
  • FIG. 5 shows a schematic diagram of a terminal according to some embodiments of the present disclosure.
  • the terminal 500 of this embodiment includes: a memory 510 ; and a processor 520 coupled to the memory 510 , the processor 520 is configured to execute, based on instructions stored in the memory 510 A method for transmitting HARQ feedback, wherein an operation of transmitting HARQ feedback is performed in the step of transmitting or receiving HARQ feedback.
  • the terminal receives the DCI or MAC signaling sent by the base station, and determines the carrier indicated by the DCI or MAC signaling for transmitting HARQ feedback, where the HARQ feedback is feedback on PDSCH or PDCCH; receives the PDSCH or PDCCH indicated by the base station
  • the number of time units K1 that differs from the end time unit to the first time unit, the first time unit is determined based on K1, and the first time unit is the time unit that starts to transmit the HARQ feedback on the default carrier;
  • the time unit on the carrier corresponding to the first time unit starts to send the HARQ feedback.
  • Figure 6 shows a schematic diagram of a base station of some embodiments of the present disclosure.
  • the base station 600 of this embodiment includes: a memory 610; A method for transmitting HARQ feedback, wherein the operation of receiving HARQ feedback is performed in the step of sending or receiving HARQ feedback.
  • the base station determines and indicates to the terminal through DCI or MAC signaling a carrier used for transmitting HARQ feedback, where the HARQ feedback is feedback to PDSCH or PDCCH; determines and indicates to the terminal the time unit for the end of the PDSCH or PDCCH to the first
  • the number of time units K1 that differs between time units, the first time unit is the time unit on which the HARQ feedback starts to be transmitted on the default carrier; the time corresponding to the first time unit on the indicated carrier
  • the unit begins to receive the HARQ feedback.
  • the memories 510 and 610 may include, for example, a system memory, a fixed non-volatile storage medium, and the like.
  • the system memory stores, for example, an operating system, an application program, a boot loader (Boot Loader), and other programs.
  • the terminal 500 or the base station 600 may further include an input/output interface, a network interface, a storage interface, and the like. These interfaces, as well as the memory and the processor, can be connected by a bus, for example.
  • the input and output interface provides a connection interface for input and output devices such as a monitor, a mouse, a keyboard, and a touch screen.
  • Network interfaces provide connection interfaces for various networked devices.
  • the storage interface provides connection interfaces for external storage devices such as SD cards and U disks.
  • FIG. 7 shows a schematic diagram of a communication system of some embodiments of the present disclosure.
  • the communication system 700 of this embodiment includes: a terminal 500 and a base station 600 .
  • One base station 600 can serve multiple terminals 500 .
  • Some embodiments of the present disclosure provide a non-transitory computer-readable storage medium on which a computer program is stored, and when the program is executed by a processor, implements the steps of the method for transmitting HARQ feedback.
  • embodiments of the present disclosure may be provided as a method, system, or computer program product. Accordingly, the present disclosure may take the form of an entirely hardware embodiment, an entirely software embodiment, or an embodiment combining software and hardware aspects. Furthermore, the present disclosure may take the form of a computer program product embodied on one or more non-transitory computer readable storage media having computer program code embodied therein, including but not limited to disk storage, CD-ROM, optical storage, etc. .
  • These computer program instructions may also be stored in a computer-readable memory capable of directing a computer or other programmable data processing apparatus to function in a particular manner, such that the instructions stored in the computer-readable memory result in an article of manufacture comprising instruction means, the instructions
  • the apparatus implements the functions specified in the flow or flow of the flowcharts and/or the block or blocks of the block diagrams.

Abstract

本公开提出一种混合自动重传请求反馈传输方法、终端、基站和通信系统，涉及无线通信领域。确定DCI或者MAC信令指示的用于传输HARQ反馈的载波，所述HARQ反馈是对PDSCH或PDCCH的反馈；确定所述PDSCH或PDCCH结束的时间单元到第一时间单元之间相差的时间单元个数K1，所述第一时间单元是默认载波上开始传输所述HARQ反馈的时间单元；在指示的所述载波上与所述第一时间单元对应的时间单元开始发送或接收所述HARQ反馈。在上行多个载波的场景下，使得通过DCI或者MAC信令指示传输PUCCH的载波以及确定载波上传输PUCCH的时域位置的HARQ反馈传输方案完整可行。

Description

混合自动重传请求反馈传输方法、终端、基站和通信系统
相关申请的交叉引用
本申请是以CN申请号为202110366896.5，申请日为2021年4月6的申请为基础，并主张其优先权，该CN申请的公开内容在此作为整体引入本申请中。
技术领域
本公开涉及无线通信领域，特别涉及一种混合自动重传请求反馈传输方法、终端、基站和通信系统。
背景技术
对于半持续调度(Semi-Persistent Scheduling，SPS)的物理下行共享信道(Physical Downlink Shared Channel，PDSCH)，如果其激活下行控制信息(Downlink Control Information，DCI)中存在PDSCH到混合自动重传请求(Hybrid Automatic Repeat Request，HARQ)的反馈定时指示器，其HARQ反馈的时域位置则由其激活DCI中承载的PDSCH到HARQ的反馈定时指示器指示的偏移确定。如果PDSCH传输在时隙或子时隙n结束，相应的HARQ反馈在时隙或子时隙n+K1开始传输，K1即PDSCH到HARQ的反馈定时指示器指示的偏移。如果DCI中的PDSCH到HARQ的反馈定时指示器不存在，K1则由无线资源控制(Radio Resource Control，RRC)信令配置。HARQ反馈通常通过物理上行控制信道(Physical Uplink Control Channel,PUCCH)进行传输。HARQ反馈也称HARQ-ACK反馈，包括对PDSCH的肯定应答(ACKnowledgment，ACK)或者否定应答(Negative ACKnowledgment，NACK)。
目前第五代移动通信技术(5th Generation mobile networks、5th Generation wireless systems或5th-Generation，5G)新空口(New Radio，NR)为超可靠低延迟通信(Ultra-reliable and Low Latency Communication，URLLC)引入了较短的SPS周期(最短1个时隙)。在这种情况下，若根据激活SPS的DCI中承载的PDSCH到HARQ的反馈定时指示器指示的偏移或者RRC信令配置的偏移确定HARQ-ACK反馈的时域位置，会导致SPS PDSCH的HARQ反馈经常会和不能用于上行的符号发生冲突，从而该HARQ反馈的传输被丢弃，导致不必要的PDSCH重传。
对于在时隙或子时隙n结束的由DCI动态调度的PDSCH，或在时隙或子时隙n结 束的用于SPS PDSCH释放的物理下行控制信道(Physical Downlink Control Channel,PDCCH)，承载其HARQ反馈的PUCCH在时隙或子时隙n+K1开始发送，K1即DCI中的PDSCH到HARQ的反馈定时指示器指示的偏移。
如果在上行配置了多个载波，比如具有不同上下行配置的时分双工(Time Division Duplex，TDD)载波聚合的场景下，或者是TDD和频分双工(Frequency Division Duplex，FDD)的载波聚合的场景下，如图1a所示，当在一个载波的一个时隙或子时隙内，HARQ反馈和不能用于上行的符号发生冲突时，另一个载波的相应时域位置上可能有可以进行PUCCH传输的资源，从而可以切换传输PUCCH的载波。
发明内容
本公开实施例提供了在上行多个载波的场景下，如何确定传输PUCCH的载波以及载波上传输PUCCH的时域位置，使得通过DCI或者MAC信令指示传输PUCCH的载波以及确定载波上传输PUCCH的时域位置的HARQ反馈传输方案完整可行。从而在一定程度避免TDD系统中HARQ反馈和不能用于上行的符号发生冲突，进而在一定程度避免HARQ反馈被丢弃导致PDSCH或PDCCH重传带来的资源浪费、减小PDSCH或PDCCH成功传输需要的时延。
本公开一些实施例提出一种混合自动重传请求反馈传输方法，包括：确定DCI或者MAC信令指示的用于传输HARQ反馈的载波，所述HARQ反馈是对PDSCH或PDCCH的反馈；确定所述PDSCH或PDCCH结束的时间单元到第一时间单元之间相差的时间单元个数K1，所述第一时间单元是默认载波上开始传输所述HARQ反馈的时间单元；在指示的所述载波上与所述第一时间单元对应的时间单元开始发送或接收所述HARQ反馈。
在一些实施例中，所述相差的时间单元参考的子载波间隔为默认载波的子载波间隔，所述默认载波为Pcell载波，或者PScell载波，或者PUCCH-Scell载波，或者指示的所述用于传输HARQ反馈的载波。
在一些实施例中，在指示的所述载波上与所述第一时间单元对应的时间单元开始发送或接收所述HARQ反馈，包括：将在指示的所述载波上，起始时间不早于所述默认载波上所述第一时间单元起始时间的第一个时间单元，确定为与所述第一时间单元对应的时间单元。
在一些实施例中，如果所述PDSCH或PDCCH所在的载波的子载波间隔大于等于所 述默认载波的子载波间隔，K1等于0对应的第一时间单元为在所述默认载波与所述PDSCH或PDSCH重叠的时间单元；如果所述PDSCH或PDCCH所在的载波的子载波间隔小于所述默认载波的子载波间隔，K1等于0对应的第一时间单元为在所述默认载波所述PDSCH或PDSCH结束时刻所在的时间单元。
在一些实施例中，在所述默认载波为指示的所述用于传输HARQ反馈的载波的情况下，对于不同的用于传输HARQ反馈的载波，RRC信令配置的K1的集合不相同，不相同的集合包含的K1的取值个数相同。
在一些实施例中，在所述默认载波为指示的所述用于传输HARQ反馈的载波的情况下，对于不同的用于传输HARQ反馈的载波，RRC信令配置的K1的集合不相同，不相同的集合包含的K1的取值个数不相同；DCI中PUCCH资源指示器和PDSCH到HARQ的反馈定时指示器总比特个数由协议固定或者由信令配置，所述PDSCH到HARQ的反馈定时指示器用于指示K1的集合中的K1的取值。
在一些实施例中，在所述默认载波为指示的所述用于传输HARQ反馈的载波的情况下，所述指示的用于传输HARQ反馈的载波和所述K1是所述DCI或者MAC信令中相同的域，或者相同的字段，或者相同的信息元素指示的。
在一些实施例中，在所有可以用于传输HARQ反馈的载波的子载波间隔中，以最小子载波间隔为参考的一个时间单元的持续时间内，用于传输HARQ反馈的载波和所述K1是所述相同的域，或者相同的字段，或者相同的信息元素的第一取值指示的；在以最小子载波间隔为参考的之后的一个时间单元的持续时间内，用于传输HARQ反馈的载波和所述K1是所述相同的域，或者相同的字段，或者相同的信息元素的第二取值指示的；第二取值大于第一取值。
在一些实施例中，确定RRC信令配置的所述PDSCH或PDCCH结束的时间单元到第二时间单元之间相差的时间单元个数M1，所述第二时间单元是在所有可以用于传输HARQ反馈的载波中子载波间隔最小的载波上传输HARQ反馈的时间单元，所述相差的时间单元参考的子载波间隔为所述最小的子载波间隔；所述第一时间单元包含在所述第二时间单元的持续时间内。
在一些实施例中，确定DCI指示的用于传输HARQ反馈的载波，包括：确定RRC信令配置的PUCCH资源集合，和PUCCH资源集合中每个PUCCH资源对应的载波；确定DCI中PUCCH资源指示器指示的所述PUCCH资源集合中的PUCCH资源，并确定指示的所述PUCCH资源对应的载波为指示的所述用于传输HARQ反馈的载波。
在一些实施例中，确定MAC信令指示的用于传输HARQ反馈的载波，包括：当HARQ反馈码本只包括SPS PDSCH的HARQ反馈，确定MAC信令指示的用于传输HARQ反馈的载波。
在一些实施例中，K1只对HARQ反馈可用时间单元计数；所述HARQ反馈可用时间单元中不包括不能用于上行传输的符号。
在一些实施例中，所述方法由基站执行时包括：
确定并通过DCI或者MAC信令向终端指示用于传输HARQ反馈的载波，所述HARQ反馈是对PDSCH或PDCCH的反馈；
确定并向终端指示所述PDSCH或PDCCH结束的时间单元到第一时间单元之间相差的时间单元个数K1，所述第一时间单元是默认载波上开始传输所述HARQ反馈的时间单元；
在指示的所述载波上与所述第一时间单元对应的时间单元开始接收所述HARQ反馈。
在一些实施例中，所述方法由终端执行时包括：
接收基站发送的DCI或者MAC信令，确定DCI或者MAC信令指示的用于传输HARQ反馈的载波，所述HARQ反馈是对PDSCH或PDCCH的反馈；
接收基站指示的所述PDSCH或PDCCH结束的时间单元到第一时间单元之间相差的时间单元个数K1，基于K1确定第一时间单元，所述第一时间单元是默认载波上开始传输所述HARQ反馈的时间单元；
在指示的所述载波上与所述第一时间单元对应的时间单元开始发送所述HARQ反馈。
本公开一些实施例提出一种终端，包括：存储器；以及耦接至所述存储器的处理器，所述处理器被配置为基于存储在所述存储器中的指令，执行混合自动重传请求反馈传输方法，其中，发送或接收所述HARQ反馈的步骤中执行发送HARQ反馈的操作。
本公开一些实施例提出一种基站，包括：存储器；以及耦接至所述存储器的处理器，所述处理器被配置为基于存储在所述存储器中的指令，执行混合自动重传请求反馈传输方法，其中，发送或接收所述HARQ反馈的步骤中执行接收HARQ反馈的操作。
本公开一些实施例提出一种通信系统，包括：前述的终端和前述的基站。
本公开一些实施例提出一种非瞬时性计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现混合自动重传请求反馈传输方法的步骤。
附图说明
下面将对实施例或相关技术描述中所需要使用的附图作简单地介绍。根据下面参照附图的详细描述，可以更加清楚地理解本公开。
显而易见地，下面描述中的附图仅仅是本公开的一些实施例，对于本领域普通技术人员来讲，在不付出创造性劳动性的前提下，还可以根据这些附图获得其他的附图。
图1a示出相关技术切换传输PUCCH的载波的示意图。
图1b示出本公开一些实施例的HARQ反馈传输方法的流程示意图。
图2a示出本公开一些实施例的HARQ反馈传输方法一的示意图。
图2b示出本公开另一些实施例的HARQ反馈传输方法一的示意图。
图3a示出本公开一些实施例的HARQ反馈传输方法二的示意图。
图3b示出本公开一些实施例的HARQ反馈传输方法二中DCI比特的示意图。
图4示出本公开一些实施例的HARQ反馈传输方法三的示意图。
图5示出本公开一些实施例的终端的示意图。
图6示出本公开一些实施例的基站的示意图。
图7示出本公开一些实施例的通信系统的示意图。
具体实施方式
下面将结合本公开实施例中的附图，对本公开实施例中的技术方案进行清楚、完整地描述。
除非特别说明，否则，本公开中的“第一”“第二”等描述用来区分不同的对象，并不用来表示大小或时序等含义。除非特别说明，否则，本公开中的“/”表示“或”。
5G NR支持灵活的时分双工(Time Division Duplex，TDD)帧结构配置。每个时隙的符号可配置成下行符号、上行符号和灵活符号三类。下行符号只能用于下行传输，上行符号只能用于上行传输，灵活符号到底用于上行传输还是下行传输，取决于基站是否调度下行传输或者上行传输在该灵活符号上。符号类型的配置方式采用半静态无线资源控制(Radio Resource Control，RRC)配置和动态下行控制信息(Downlink Control Information，DCI)配置结合的方式。RRC配置支持小区专用的上下行配置，以及终端(User Equipment，UE)专用的上下行配置，以符号为最小颗粒度来配置符号的上下行方向。UE专用的上下行配置用于对小区专用的上下行配置没有配置的符号来进行配置。半静态RRC 配置没有配置的符号即可认为是半静态配置的灵活符号。DCI配置支持采用DCI格式2_0承载的时隙格式指示(Slot Format Indicator,SFI)或者直接通过DCI调度上下行数据来确定符号的方向。SFI指示的符号类型是前述提及的三种类型之一。半静态配置的灵活符号可以由SFI或DCI调度上下行数据来确定符号方向。
本公开实施例提供了在上行多个载波的场景下，如何确定传输PUCCH的载波以及载波上传输PUCCH的时域位置，使得通过DCI或者MAC信令指示传输PUCCH的载波以及确定载波上传输PUCCH的时域位置的HARQ反馈传输方案完整可行。从而在一定程度避免TDD系统中HARQ反馈和不能用于上行的符号发生冲突，进而在一定程度避免HARQ反馈被丢弃导致PDSCH或物理下行控制信道(Physical Downlink Control Channel，PDCCH)重传带来的资源浪费、减小PDSCH或PDCCH成功传输需要的时延。对于动态调度的PDSCH的HARQ反馈，比如当第二个载波可用于PUCCH发送的时域位置早于第一个载波可用于PUCCH发送的时域位置时，PUCCH切换到第二个载波上发送，从而DCI可以指示较小的PDSCH到HARQ反馈的时间偏移K1，从而可以降低HARQ反馈的时延。对于SPS PDSCH的HARQ反馈，比如当第一个载波在由激活SPS的DCI中承载的PDSCH到HARQ的反馈定时指示器确定的HARQ反馈的时域位置不能用于上行发送，将PUCCH切换到第二个载波上发送，可以避免HARQ反馈被丢弃带来的资源浪费。
图1b示出本公开一些实施例的混合自动重传请求反馈传输方法的流程示意图。
如图1b所示，该实施例的混合自动重传请求反馈传输方法100包括：步骤110-130，可由基站或终端执行，适用于上行多个载波的HARQ反馈传输场景。
在步骤110，确定DCI或者介质访问控制(Media Access Control，MAC)信令指示的用于传输HARQ反馈的载波，所述HARQ反馈是对PDSCH或PDCCH的反馈。
由于HARQ反馈通常通过PUCCH进行传输，因此，用于传输HARQ反馈的载波也即传输PUCCH的载波，简称PUCCH载波。
在步骤120，确定所述PDSCH或所述PDCCH结束的时间单元到第一时间单元之间相差的时间单元个数K1，所述第一时间单元是默认载波上开始传输所述HARQ反馈的时间单元。
如果HARQ反馈是对PDSCH的反馈，确定PDSCH结束的时间单元到第一时间单元之间相差的时间单元个数K1；如果HARQ反馈是对PDCCH的反馈，确定PDCCH结束的时间单元到第一时间单元之间相差的时间单元个数K1。对于用于指示SPS释放的PDCCH，HARQ反馈是对PDCCH的反馈。
K1表示PDSCH或PDCCH结束的时间单元到第一时间单元的时间单元偏移，简称时间单元偏移或偏移。
在一些实施例中，K1只对HARQ反馈可用时间单元计数。所述HARQ反馈可用时间单元中不包括不能用于上行传输的符号。不能用于上行传输的符号例如包括RRC信令半静态配置的下行符号、同步广播块(Synchronization Signal Physical Broadcast Channel Block，SS PBCH Block或SSB)所在的符号、PDCCH控制资源集合0(Control Resource Set#0，CORESET#0)所在的符号。能用于上行传输的符号例如包括半静态配置的上行符号。能用于上行传输的符号又例如包括半静态配置的上行符号和半静态配置的灵活符号。
时间单元例如为时隙或子时隙。
所述相差的时间单元参考的子载波间隔为默认载波的子载波间隔，所述默认载波例如为主小区(Primary Cell，Pcell)载波，或者主辅小区(Primary Secondary Cell Group Cell，Primary SCG Cell，PScell)载波，或者PUCCH辅小区(PUCCH Secondary Cell，PUCCH-Scell)载波，或者指示的所述用于传输HARQ反馈的载波。
在步骤130，在指示的所述载波上与所述第一时间单元对应的时间单元开始发送或接收所述HARQ反馈。
所述方法100由终端执行时，执行步骤130中发送所述HARQ反馈的操作；所述方法100由基站执行时，执行步骤130中接收所述HARQ反馈的操作。
所述方法100由基站执行时具体包括：步骤110a-130a。
在步骤110a，基站确定并通过DCI或者MAC信令向终端指示用于传输HARQ反馈的载波，所述HARQ反馈是对PDSCH或PDCCH的反馈。
在步骤120a，基站确定并向终端指示所述PDSCH或PDCCH结束的时间单元到第一时间单元之间相差的时间单元个数K1，所述第一时间单元是默认载波上开始传输所述HARQ反馈的时间单元。
在步骤130a，基站在指示的所述载波上与所述第一时间单元对应的时间单元开始接收所述HARQ反馈。
所述方法100由终端执行时包括：步骤110b-130b。
在步骤110b，终端接收基站发送的DCI或者MAC信令，确定DCI或者MAC信令指示的用于传输HARQ反馈的载波，所述HARQ反馈是对PDSCH或PDCCH的反馈。
在步骤120b，终端接收基站指示的所述PDSCH或PDCCH结束的时间单元到第一时 间单元之间相差的时间单元个数K1，基于K1确定第一时间单元，所述第一时间单元是默认载波上开始传输所述HARQ反馈的时间单元。
在步骤130b，终端在指示的所述载波上与所述第一时间单元对应的时间单元开始发送所述HARQ反馈。
当所述方法100由终端和基站配合执行时，各步骤的执行顺序为：110a、110b、120a、120b、130b、130a。
所述方法100可以是在一个PUCCH载波组包含的载波中确定一个载波用于传输PUCCH，也以是在多个PUCCH载波组中的每个PUCCH载波组包含的载波中分别确定一个载波用于传输PUCCH，从而多个PUCCH可以同时传输。
所述方法100例如可通过方法一、方法二、方法三、方法四、方法五等方式实现，但不限于所列举的方法。其中的每种方法包括一个或多个实施例。
方法一：
在DCI中新增用于传输HARQ反馈的载波指示的域/字段，也即，在DCI中新增PUCCH载波指示的域/字段，例如PUCCH载波指示器。用于传输HARQ反馈的PUCCH在PUCCH载波指示的域/字段指示的载波上传输。
DCI中PDSCH或PDCCH到HARQ的反馈定时指示器指示的偏移值K1、RRC信令dl-DataToUL-ACK、RRC信令dl-DataToUL-ACK-DCI-1-2配置的偏移值K1参考的子载波间隔为主小区(Primary Cell，Pcell)载波，或主辅小区(Primary Secondary Cell Group Cell，Primary SCG Cell，PScell)载波，或PUCCH辅小区(PUCCH Secondary Cell，PUCCH-Scell)载波的子载波间隔。即PDSCH或PDCCH结束的时隙/子时隙n到默认载波上HARQ反馈开始传输的时隙/子时隙n+K1之间相差的K1个时隙/子时隙的时间长度是Pcell/PScell/PUCCH-Scell载波的子载波间隔所对应的时隙/子时隙的时间长度。
如果DCI指示的PUCCH载波的子载波间隔和Pcell/PScell/PUCCH-Scell的子载波间隔不相同，则在指示的PUCCH载波传输PUCCH的时隙/子时隙的起始符号为不早于在Pcell/PScell/PUCCH-Scell传输PUCCH的时隙/子时隙的起始符号的第一个时隙/子时隙。
例如，在附图2a中，示例性的示出子载波间隔分别为15KHz、30KHz、60KHz、120KHz的4个载波。对于在30KHz的载波上编号为1的时隙结束传输的PDSCH，指示的K1为4，由于Pcell/PScell/PUCCH-Scell的子载波间隔是30KHz，若DCI指示PUCCH(即， HARQ反馈)在子载波间隔是30KHz的载波上传输，则PUCCH开始传输的时隙是30KHz的载波上编号为5的时隙；若DCI指示PUCCH在子载波间隔是60KHz的载波上传输，则PUCCH开始传输的时隙是60KHz的载波上编号为10的时隙；若DCI指示PUCCH在子载波间隔是120KHz的载波上传输，则PUCCH开始传输的时隙是120KHz的载波上编号为20的时隙；若DCI指示PUCCH在子载波间隔是15KHz的载波上传输，则PUCCH开始传输的时隙是15KHz的载波上编号为3的时隙。
如果PDSCH或PDCCH所在的载波的子载波间隔大于等于Pcell/PScell/PUCCH-Scell的子载波间隔，K1＝0对应于Pcell/PScell/PUCCH-Scell上在时间上与PDSCH或PDCCH重叠的时隙/子时隙。如果PDSCH或PDCCH所在的载波的子载波间隔小于Pcell/PScell/PUCCH-Scell的子载波间隔，K1＝0对应于Pcell/PScell/PUCCH-Scell上PDSCH或PDCCH结束时刻所在的时隙/子时隙。
例如，在附图2b中，对于在60KHz的载波上编号为4的时隙结束传输的PDSCH，指示的K1为6，由于Pcell/PScell/PUCCH-Scell的子载波间隔是30KHz，若DCI指示PUCCH(即，HARQ反馈)在子载波间隔是30KHz的载波上传输，则PUCCH开始传输的时隙是30KHz的载波上编号为8的时隙；若DCI指示PUCCH在子载波间隔是60KHz的载波上传输，则PUCCH开始传输的时隙是60KHz的载波上编号为16的时隙；若DCI指示PUCCH在子载波间隔是120KHz的载波上传输，则PUCCH开始传输的时隙是120KHz的载波上编号为32的时隙；若DCI指示PUCCH在子载波间隔是15KHz的载波上传输，则PUCCH开始传输的时隙是15KHz的载波上编号为4的时隙。
在一些实施例中，K1只对可用PUCCH资源所在的时隙/子时隙计数，也即，K1只对HARQ反馈可用的时隙/子时隙计数。组成可用PUCCH资源的符号不包括RRC信令半静态配置的下行符号、同步广播块(Synchronization Signal Physical Broadcast Channel Block，SS PBCH Block或SSB)所在的符号、PDCCH控制资源集合0(Control Resource Set#0，CORESET#0)所在的符号。组成可用PUCCH资源的符号例如包括半静态配置的上行符号。组成可用PUCCH资源的符号又例如包括半静态配置的上行符号和半静态配置的灵活符号。
例如，在附图2b中，如果对于在60KHz的载波上编号为4的时隙结束传输的PDSCH，指示的K1为4，如果Pcell/PScell/PUCCH-Scell编号为3和4的时隙包含的符号是半静态配置的下行符号，若DCI指示PUCCH在子载波间隔是30KHz的载波上传输，K1从30KHz的载波上编号为5的时隙开始计数，则PUCCH开始传输的时隙是30KHz的载 波上编号为8的时隙。
方法二：
在DCI中新增用于传输HARQ反馈的载波指示的域/字段，也即，在DCI中新增PUCCH载波指示的域/字段，例如PUCCH载波指示器。用于传输HARQ反馈的PUCCH在PUCCH载波指示的域/字段指示的载波上传输。
DCI中PDSCH或PDCCH到HARQ的反馈定时指示器指示的偏移值K1、RRC信令dl-DataToUL-ACK、RRC信令dl-DataToUL-ACK-DCI-1-2配置的偏移值K1参考的子载波间隔为DCI指示的PUCCH载波的子载波间隔。即PDSCH或PDCCH结束的时隙/子时隙n到DCI指示的载波上HARQ反馈开始传输的时隙/子时隙n+K1之间相差的K1个时隙/子时隙的时间长度是DCI指示的PUCCH载波的子载波间隔所对应的时隙/子时隙的时间长度。
如果PDSCH或PDCCH所在的载波的子载波间隔大于等于DCI指示的PUCCH载波的子载波间隔，K1＝0对应于DCI指示的PUCCH载波上在时间上与PDSCH或PDCCH重叠的时隙/子时隙。如果PDSCH或PDCCH所在的载波的子载波间隔小于DCI指示的PUCCH载波的子载波间隔，K1＝0对应于DCI指示的PUCCH载波上PDSCH或PDCCH结束时刻对应的时隙。
例如，在附图3a中，对于在30KHz的载波上编号为1的时隙结束传输的PDSCH，指示的K1为4。若DCI指示PUCCH在子载波间隔是30KHz的载波上传输，K1＝0对应于30KHz的载波上编号为1的时隙，则PUCCH开始传输的时隙是30KHz的载波上编号为5的时隙；若DCI指示PUCCH在子载波间隔是60KHz的载波上传输，K1＝0对应于60KHz的载波上编号为3的时隙，则PUCCH开始传输的时隙是60KHz的载波上编号为7的时隙；若DCI指示PUCCH在子载波间隔是120KHz的载波上传输，K1＝0对应于120KHz的载波上编号为7的时隙，则PUCCH开始传输的时隙是120KHz的载波上编号为11的时隙；若DCI指示PUCCH在子载波间隔是15KHz的载波上传输，K1＝0对应于15KHz的载波上编号为0的时隙，则PUCCH开始传输的时隙是15KHz的载波上编号为4的时隙。
在一些实施例中，K1只对可用PUCCH资源所在的时隙/子时隙计数，也即，K1只对HARQ反馈可用的时隙/子时隙计数。组成可用PUCCH资源的符号不包括RRRC信令半静态配置的下行符号，SSB所在的符号，CORESET#0所在的符号。组成可用PUCCH资源的符号例如包括半静态配置的上行符号。组成可用PUCCH资源的符号又例如包括半静态配置的上行符号和半静态配置的灵活符号。
在一些实施例中，对在可用于PUCCH传输的不同载波，RRC信令dl-DataToUL-ACK或dl-DataToUL-ACK-DCI-1-2可配置的不相同的偏移值集合。采用DCI指示的PUCCH载波对应的偏移值集合。
在一种方式中，对于可用于PUCCH传输的不同载波，配置的偏移值集合包含的偏移值的个数相同。这样可以保证DCI中的PDSCH到HARQ的反馈定时指示器的比特个数不随DCI指示的PUCCH载波而变化。
在另一种方式中，对于可用于PUCCH传输的不同载波，配置的偏移值集合包含的偏移值的个数可不相同。此时在一些实施例中，DCI中的PUCCH资源指示器和PDSCH到HARQ的反馈定时指示器的总比特个数协议固定或者由RRC信令配置。其中，PDSCH到HARQ的反馈定时指示器用于指示偏移值集合中偏移值的取值。根据DCI指示的PUCCH载波决定PUCCH资源指示器和PDSCH到HARQ的反馈定时指示器各自的比特个数。比如若I是DCI指示的PUCCH载波对应的RRC信令dl-DataToUL-ACK或dl-DataToUL-ACK-DCI-1-2配置的偏移值集合中的偏移值的个数，则DCI中PDSCH到HARQ的反馈定时指示器的比特数是
Figure PCTCN2021115060-appb-000001
所述总比特中剩余的比特即为PUCCH资源指示器的比特个数。例如附图3b所示。
在另一种方式中，对于可用于PUCCH传输的不同载波，配置的偏移值集合包含的偏移值的个数可不相同。比如设Imax是在所有可用于PUCCH传输的载波分别对应的RRC信令配置的偏移值K1的集合所包含的K1值的个数中最大的个数；Itar get是DCI指示的PUCCH载波对应的RRC信令配置的偏移值K1的集合所包含的K1值的个数。此时在一些实施例中，DCI中PDSCH到HARQ的反馈定时指示器的比特个数是
Figure PCTCN2021115060-appb-000002
其中，
Figure PCTCN2021115060-appb-000003
个比特用于指示为DCI指示的PUCCH载波配置的K1的集合中的K1取值，剩余
Figure PCTCN2021115060-appb-000004
个比特取值是0。也即，DCI中PDSCH到HARQ的反馈定时指示器采用
Figure PCTCN2021115060-appb-000005
个比特指示为所述DCI指示的PUCCH载波配置的K1集合中的K1取值；若
Figure PCTCN2021115060-appb-000006
小于
Figure PCTCN2021115060-appb-000007
则在PDSCH到HARQ的反馈定时指示器的所述
Figure PCTCN2021115060-appb-000008
个比特的高比特位之前或者低比特位之后添加0，直到PDSCH到HARQ的反馈定时指示器的比特个数是
Figure PCTCN2021115060-appb-000009
这样可以保证DCI中的PDSCH到HARQ的反馈定时指示器的比特个数不随DCI指示的PUCCH载波而变化。
方法三：
采用DCI中相同的域/字段/信息元素同时指示PUCCH的载波，以及PDSCH或PDCCH结束的时隙/子时隙n到HARQ反馈开始的时隙/子时隙n+K1之间相差的时隙/子时隙 个数K1。即对PUCCH载波，以及PDSCH或PDCCH结束的时隙/子时隙n到HARQ-ACK反馈开始的时隙/子时隙n+K1之间相差的时隙/子时隙个数K1进行联合编码。对于PDSCH接收，n是PDSCH结束的时隙/子时隙；对于SPS PDSCH释放，n是PDCCH结束的时隙/子时隙。所述PDSCH或PDCCH结束的时隙/子时隙n到HARQ-ACK反馈开始的时隙/子时隙n+K1之间相差的时隙/子时隙个数K1参考的子载波间隔为PUCCH所在载波的子载波间隔。
在一些实施例中，联合编码只考虑可用PUCCH资源所在的时隙/子时隙。组成可用PUCCH资源的符号不包括半静态配置的下行符号，SSB所在的符号，CORESET#0所在的符号。组成可用PUCCH资源的符号例如包括半静态配置的上行符号。组成可用PUCCH资源的符号又例如包括半静态配置的上行符号和半静态配置的灵活符号。
联合编码方式可以是：在所有可以用于传输HARQ反馈的载波的子载波间隔中，以最小子载波间隔的载波的一个时隙/子时隙的时间长度为时间单元，对一个时间单元内可以采用的PUCCH载波，以及PDSCH或PDCCH结束的时隙/子时隙n到HARQ-ACK反馈开始的时隙/子时隙n+K1之间相差的时隙/子时隙个数K1进行联合编码。编完一个时间单元再编下一个时间单元。
在所有可以用于传输HARQ反馈的载波的子载波间隔中，以最小子载波间隔为参考的一个时间单元的持续时间内，用于传输HARQ反馈的载波和所述K1是所述相同的域，或者相同的字段，或者相同的信息元素的第一取值指示的；在以最小子载波间隔为参考的之后的一个时间单元的持续时间内，用于传输HARQ反馈的载波和所述K1是所述相同的域，或者相同的字段，或者相同的信息元素的第二取值指示的；第二取值大于第一取值。
确定RRC信令配置的PDSCH或PDCCH结束的时间单元到第二时间单元之间相差的时间单元个数M1，所述第二时间单元是在所有可以用于传输HARQ反馈的载波中子载波间隔最小的载波上传输HARQ反馈的时间单元，所述相差的时间单元参考的子载波间隔为所述最小的子载波间隔；所述第一时间单元包含在所述第二时间单元的持续时间内。
在一种方式中，所述域/字段/信息元素所有取值指示的PUCCH的时隙/子时隙是PDSCH或PDCCH(对于SPS PDSCH释放)结束时刻所在的时隙/子时隙以及之后的连续时隙/子时隙。所述域/字段/信息元素的比特数协议固定或者由RRC信令配置。
在另一种方式中，所述域/字段/信息元素所有取值指示的PUCCH的时隙/子时隙 是根据RRC信令dl-DataToUL-ACK或dl-DataToUL-ACK-DCI-1-2确定的时隙/子时隙。所述RRC信令配置的偏移的参考子载波间隔是最小子载波间隔。根据PDSCH或PDCCH结束的时隙/子时隙以及RRC信令dl-DataToUL-ACK或dl-DataToUL-ACK-DCI-1-2配置的偏移K1的集合，可确定在最小子载波间隔的载波上可用于PUCCH传输的时隙/子时隙的集合。在除了最小子载波间隔的载波之外的其它载波，所述域/字段/信息元素指示的PUCCH的时隙/子时隙在时间上与在最小子载波间隔的载波上可用于PUCCH传输的时隙/子时隙的集合中的时隙/子时隙重叠。所述域/字段/信息元素的比特数协议固定，或者由RRC信令配置，或者根据载波个数、子载波间隔、PUCCH的时隙/子时隙个数得出。
在一些实施例中，在一个时间单元内联合编码可以是从最大子载波间隔的载波开始，按照先PUCCH所在时隙/子时隙递增，后载波编号递增，再子载波间隔递减的顺序进行编码。附图4为dl-DataToUL-ACK配置了偏移值1和3的一个示例，方格中的数字0-29为所述域/字段/信息元素的取值。
在一些实施例中，在一个时间单元内联合编码还可以是从最小子载波间隔的载波开始，按照先PUCCH所在时隙/子时隙递增，后载波编号递增，再子载波间隔递增的顺序进行编码。
在一些实施例中，在一个时间单元内联合编码还可以是从Pcell/PScell/PUCCH-Scell开始，编完Pcell/PScell/PUCCH-Scell再按照载波编号递增的顺序编码其它载波。在一个载波内按照PUCCH所在时隙/子时隙递增的顺序进行。
方法四：
方法四与方法一或方法二不同的是，在RRC信令PUCCH资源的配置中，同时配置PUCCH(即HARQ反馈)所在的载波。比如在如下PUCCH资源配置中添加PUCCH载波配置。从而，根据DCI中PUCCH资源指示器确定了PUCCH的资源，也就确定了PUCCH所在的载波，也即，根据DCI中PUCCH资源指示器指示的PUCCH资源，可以同时确定PUCCH资源和PUCCH载波。
PUCCH资源配置例如包括PUCCH资源标识、起始物理资源块(physical resource block，PRB)、跳频信息、格式信息等。添加的PUCCH载波配置例如包括PUCCH载波标识等信息。
Figure PCTCN2021115060-appb-000010
Figure PCTCN2021115060-appb-000011
除了上述PUCCH(即HARQ反馈)所在的载波的配置方法不同，其他内容方法四与方法一或方法二相同，这里不再赘述。
方法五：
对于SPS PDSCH的HARQ反馈，基站通过MAC信令指示传输HARQ反馈的PUCCH载波，终端根据MAC信令的指示确定传输HARQ反馈的PUCCH载波。MAC信令例如包括MAC CE(Control Element，控制单元)。MAC信令例如在PDSCH中承载。
当HARQ反馈码本只包括SPS PDSCH的HARQ反馈，并且所有的HARQ反馈都是NACK时，不发送HARQ反馈，或不发送PUCCH。
当HARQ反馈码本只包括SPS PDSCH的HARQ反馈，有的HARQ反馈是NACK，有的HARQ反馈是ACK时，采用MAC CE指示的PUCCH载波。
当HARQ反馈码本既包括SPS PDSCH的HARQ反馈，又包括动态调度的PDSCH的HARQ反馈时，采用DCI动态指示的PUCCH载波。
图5示出本公开一些实施例的终端的示意图。
如图5所示，该实施例的终端500包括：存储器510；以及耦接至所述存储器510的处理器520，所述处理器520被配置为基于存储在所述存储器510中的指令，执行混合自动重传请求反馈的传输方法，其中，在该发送或接收HARQ反馈的步骤中执行 发送HARQ反馈的操作。
例如，终端接收基站发送的DCI或者MAC信令，确定DCI或者MAC信令指示的用于传输HARQ反馈的载波，所述HARQ反馈是对PDSCH或PDCCH的反馈；接收基站指示的所述PDSCH或PDCCH结束的时间单元到第一时间单元之间相差的时间单元个数K1，基于K1确定第一时间单元，所述第一时间单元是默认载波上开始传输所述HARQ反馈的时间单元；在指示的所述载波上与所述第一时间单元对应的时间单元开始发送所述HARQ反馈。
图6示出本公开一些实施例的基站的示意图。
如图6所示，该实施例的基站600包括：存储器610；以及耦接至所述存储器610的处理器620，所述处理器620被配置为基于存储在所述存储器610中的指令，执行混合自动重传请求反馈的传输方法，其中，在该发送或接收HARQ反馈的步骤中执行接收HARQ反馈的操作。
例如，基站确定并通过DCI或者MAC信令向终端指示用于传输HARQ反馈的载波，所述HARQ反馈是对PDSCH或PDCCH的反馈；确定并向终端指示所述PDSCH或PDCCH结束的时间单元到第一时间单元之间相差的时间单元个数K1，所述第一时间单元是默认载波上开始传输所述HARQ反馈的时间单元；在指示的所述载波上与所述第一时间单元对应的时间单元开始接收所述HARQ反馈。
其中，存储器510，610例如可以包括系统存储器、固定非易失性存储介质等。系统存储器例如存储有操作系统、应用程序、引导装载程序(Boot Loader)以及其他程序等。
终端500或基站600中还可以包括输入输出接口、网络接口、存储接口等。这些接口以及存储器和处理器之间例如可以通过总线连接。其中，输入输出接口为显示器、鼠标、键盘、触摸屏等输入输出设备提供连接接口。网络接口为各种联网设备提供连接接口。存储接口为SD卡、U盘等外置存储设备提供连接接口。
图7示出本公开一些实施例的通信系统的示意图。
如图7所示，该实施例的通信系统700包括：终端500和基站600。一个基站600可以服务多个终端500。
本公开一些实施例提出一种非瞬时性计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现混合自动重传请求反馈的传输方法的步骤。
本领域内的技术人员应当明白，本公开的实施例可提供为方法、系统、或计算机 程序产品。因此，本公开可采用完全硬件实施例、完全软件实施例、或结合软件和硬件方面的实施例的形式。而且，本公开可采用在一个或多个其中包含有计算机程序代码的非瞬时性计算机可读存储介质(包括但不限于磁盘存储器、CD-ROM、光学存储器等)上实施的计算机程序产品的形式。
本公开是参照根据本公开实施例的方法、设备(系统)、和计算机程序产品的流程图和/或方框图来描述的。应理解为可由计算机程序指令实现流程图和/或方框图中的每一流程和/或方框、以及流程图和/或方框图中的流程和/或方框的结合。可提供这些计算机程序指令到通用计算机、专用计算机、嵌入式处理机或其他可编程数据处理设备的处理器以产生一个机器，使得通过计算机或其他可编程数据处理设备的处理器执行的指令产生用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的装置。
这些计算机程序指令也可存储在能引导计算机或其他可编程数据处理设备以特定方式工作的计算机可读存储器中，使得存储在该计算机可读存储器中的指令产生包括指令装置的制造品，该指令装置实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能。
这些计算机程序指令也可装载到计算机或其他可编程数据处理设备上，使得在计算机或其他可编程设备上执行一系列操作步骤以产生计算机实现的处理，从而在计算机或其他可编程设备上执行的指令提供用于实现在流程图一个流程或多个流程和/或方框图一个方框或多个方框中指定的功能的步骤。
以上所述仅为本公开的较佳实施例，并不用以限制本公开，凡在本公开的精神和原则之内，所作的任何修改、等同替换、改进等，均应包含在本公开的保护范围之内。

Claims (19)

  1. 一种混合自动重传请求反馈传输方法，包括：
    确定DCI或者MAC信令指示的用于传输HARQ反馈的载波，所述HARQ反馈是对PDSCH或PDCCH的反馈；
    确定所述PDSCH或PDCCH结束的时间单元到第一时间单元之间相差的时间单元个数K1，所述第一时间单元是默认载波上开始传输所述HARQ反馈的时间单元；
    在指示的所述载波上与所述第一时间单元对应的时间单元开始发送或接收所述HARQ反馈。
  2. 根据权利要求1所述的方法，其中，
    所述相差的时间单元参考的子载波间隔为默认载波的子载波间隔，所述默认载波为Pcell载波，或者PScell载波，或者PUCCH-Scell载波，或者指示的所述用于传输HARQ反馈的载波。
  3. 根据权利要求2所述的方法，其中，在指示的所述载波上与所述第一时间单元对应的时间单元开始发送或接收所述HARQ反馈，包括：
    将在指示的所述载波上，起始时间不早于所述默认载波上所述第一时间单元起始时间的第一个时间单元，确定为与所述第一时间单元对应的时间单元。
  4. 根据权利要求2所述的方法，其中，
    如果所述PDSCH或PDCCH所在的载波的子载波间隔大于等于所述默认载波的子载波间隔，K1等于0对应的第一时间单元为在所述默认载波与所述PDSCH或PDSCH重叠的时间单元；
    如果所述PDSCH或PDCCH所在的载波的子载波间隔小于所述默认载波的子载波间隔，K1等于0对应的第一时间单元为在所述默认载波所述PDSCH或PDSCH结束时刻所在的时间单元。
  5. 根据权利要求2所述的方法，其中，在所述默认载波为指示的所述用于传输HARQ反馈的载波的情况下，
    对于不同的用于传输HARQ反馈的载波，RRC信令配置的K1的集合[NF1]包含的K1的取值个数相同。
  6. 根据权利要求2所述的方法，其中，在所述默认载波为指示的所述用于传输HARQ反馈的载波的情况下，
    对于不同的用于传输HARQ反馈的载波，RRC信令配置的K1的集合不相同，不相同的集合包含的K1的取值个数不相同；
    DCI中PUCCH资源指示器和PDSCH到HARQ的反馈定时指示器总比特个数由协议固定或者由信令配置，所述PDSCH到HARQ的反馈定时指示器用于指示K1的集合中的K1的取值。
  7. 根据权利要求2所述的方法，其中，在所述默认载波为指示的所述用于传输HARQ反馈的载波的情况下，
    所述指示的用于传输HARQ反馈的载波和所述K1是所述DCI或者MAC信令中相同的域，或者相同的字段，或者相同的信息元素指示的。
  8. 根据权利要求7所述的方法，其中，
    在所有可以用于传输HARQ反馈的载波的子载波间隔中，以最小子载波间隔为参考的一个时间单元的持续时间内，用于传输HARQ反馈的载波和所述K1是所述相同的域，或者相同的字段，或者相同的信息元素的第一取值指示的；在以最小子载波间隔为参考的之后的一个时间单元的持续时间内，用于传输HARQ反馈的载波和所述K1是所述相同的域，或者相同的字段，或者相同的信息元素的第二取值指示的；第二取值大于第一取值。
  9. 根据权利要求7所述的方法，其中，
    确定RRC信令配置的所述PDSCH或PDCCH结束的时间单元到第二时间单元之间相差的时间单元个数M1，所述第二时间单元是在所有可以用于传输HARQ反馈的载波中子载波间隔最小的载波上传输HARQ反馈的时间单元，所述相差的时间单元参考的子载波间隔为所述最小的子载波间隔；所述第一时间单元包含在所述第二时间单元的持续时间内。
  10. 根据权利要求1所述的方法，其中，确定DCI指示的用于传输HARQ反馈的载波，包括：
    确定RRC信令配置的PUCCH资源集合，和PUCCH资源集合中每个PUCCH资源对应的载波；
    确定DCI中PUCCH资源指示器指示的所述PUCCH资源集合中的PUCCH资源，并确定指示的所述PUCCH资源对应的载波为指示的所述用于传输HARQ反馈的载波。
  11. 根据权利要求1所述的方法，其中，确定MAC信令指示的用于传输HARQ反馈的载波，包括：
    当HARQ反馈码本只包括SPS PDSCH的HARQ反馈，确定MAC信令指示的用于传输HARQ反馈的载波。
  12. 根据权利要求1-11任一项所述的方法，其中，
    K1只对HARQ反馈可用时间单元计数；所述HARQ反馈可用时间单元中不包括不能用于上行传输的符号。
  13. 根据权利要求1-11任一项所述的方法，其中，
    所述方法由基站执行时包括：
    确定并通过DCI或者MAC信令向终端指示用于传输HARQ反馈的载波，所述HARQ反馈是对PDSCH或PDCCH的反馈；
    确定并向终端指示所述PDSCH或PDCCH结束的时间单元到第一时间单元之间相差的时间单元个数K1，所述第一时间单元是默认载波上开始传输所述HARQ反馈的时间单元；
    在指示的所述载波上与所述第一时间单元对应的时间单元开始接收所述HARQ反馈。
  14. 根据权利要求1-11任一项所述的方法，其中，
    所述方法由终端执行时包括：
    接收基站发送的DCI或者MAC信令，确定DCI或者MAC信令指示的用于传输HARQ 反馈的载波，所述HARQ反馈是对PDSCH或PDCCH的反馈；
    接收基站指示的所述PDSCH或PDCCH结束的时间单元到第一时间单元之间相差的时间单元个数K1，基于K1确定第一时间单元，所述第一时间单元是默认载波上开始传输所述HARQ反馈的时间单元；
    在指示的所述载波上与所述第一时间单元对应的时间单元开始发送所述HARQ反馈。
  15. 根据权利要求2所述的方法，其中，在所述默认载波为指示的所述用于传输HARQ反馈的载波的情况下，
    对于每个可用于传输HARQ反馈的载波，RRC信令配置K1的集合；
    在所有可用于传输HARQ反馈的载波中RRC信令配置的K1的集合所包含的K1值的个数最大是Imax；对于指示的所述用于传输HARQ反馈的载波，RRC信令配置的K1的集合所包含的K1值的个数是Itarget；
    DCI中PDSCH到HARQ的反馈定时指示器采用
    Figure PCTCN2021115060-appb-100001
    个比特指示为指示的所述用于传输HARQ反馈的载波配置的K1的集合中的K1取值；若
    Figure PCTCN2021115060-appb-100002
    小于
    Figure PCTCN2021115060-appb-100003
    则在PDSCH到HARQ的反馈定时指示器的所述
    Figure PCTCN2021115060-appb-100004
    个比特的高比特位之前或者低比特位之后添加0，直到PDSCH到HARQ的反馈定时指示器的比特个数是
    Figure PCTCN2021115060-appb-100005
  16. 一种终端，包括：
    存储器；以及
    耦接至所述存储器的处理器，所述处理器被配置为基于存储在所述存储器中的指令，执行权利要求1-12和14-15中任一项所述的混合自动重传请求反馈传输方法，其中，所述发送或接收所述HARQ反馈的步骤中执行发送HARQ反馈的操作。
  17. 一种基站，包括：
    存储器；以及
    耦接至所述存储器的处理器，所述处理器被配置为基于存储在所述存储器中的指令，执行权利要求1-12和13、15中任一项所述的混合自动重传请求反馈传输方法，其中，所述发送或接收所述HARQ反馈的步骤中执行接收HARQ反馈的操作。
  18. 一种通信系统，包括：权利要求16所述的终端和权利要求17所述的基站。
  19. 一种非瞬时性计算机可读存储介质，其上存储有计算机程序，该程序被处理器执行时实现权利要求1-15中任一项所述的混合自动重传请求反馈传输方法的步骤。
PCT/CN2021/115060 2021-04-06 2021-08-27 混合自动重传请求反馈传输方法、终端、基站和通信系统 WO2022213528A1 (zh)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
CN202110366896.5A CN115174004A (zh) 2021-04-06 2021-04-06 混合自动重传请求反馈传输方法、终端、基站和通信系统
CN202110366896.5 2021-04-06

Publications (1)

Publication Number Publication Date
WO2022213528A1 true WO2022213528A1 (zh) 2022-10-13

Family

ID=83476257

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2021/115060 WO2022213528A1 (zh) 2021-04-06 2021-08-27 混合自动重传请求反馈传输方法、终端、基站和通信系统

Country Status (2)

Country Link
CN (1) CN115174004A (zh)
WO (1) WO2022213528A1 (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230043213A1 (en) * 2019-01-11 2023-02-09 Lg Electronics Inc. Method for transmitting a feedback information in a wireless communication system

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110138531A (zh) * 2018-02-09 2019-08-16 电信科学技术研究院有限公司 混合自动重传请求应答的传输方法及其装置
CN110677222A (zh) * 2018-07-03 2020-01-10 电信科学技术研究院有限公司 一种pdsch重复传输的harq反馈方法及装置
WO2020164358A1 (zh) * 2019-02-15 2020-08-20 电信科学技术研究院有限公司 Harq-ack信息的传输方法、装置、终端及网络设备
US20200288457A1 (en) * 2017-09-08 2020-09-10 Samsung Electronics Co., Ltd. Device and method for transmitting uplink control signal in wireless communication system
CN111903170A (zh) * 2017-03-23 2020-11-06 苹果公司 用于新空口载波聚合的调度和混合自动重传请求操作以及码本设计

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN111903170A (zh) * 2017-03-23 2020-11-06 苹果公司 用于新空口载波聚合的调度和混合自动重传请求操作以及码本设计
US20200288457A1 (en) * 2017-09-08 2020-09-10 Samsung Electronics Co., Ltd. Device and method for transmitting uplink control signal in wireless communication system
CN110138531A (zh) * 2018-02-09 2019-08-16 电信科学技术研究院有限公司 混合自动重传请求应答的传输方法及其装置
CN110677222A (zh) * 2018-07-03 2020-01-10 电信科学技术研究院有限公司 一种pdsch重复传输的harq反馈方法及装置
WO2020164358A1 (zh) * 2019-02-15 2020-08-20 电信科学技术研究院有限公司 Harq-ack信息的传输方法、装置、终端及网络设备

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
NOKIA, NOKIA SHANGHAI BELL: "Remaining details on NR-U HARQ scheduling and feedback", 3GPP DRAFT; R1-1912261, 3RD GENERATION PARTNERSHIP PROJECT (3GPP), MOBILE COMPETENCE CENTRE ; 650, ROUTE DES LUCIOLES ; F-06921 SOPHIA-ANTIPOLIS CEDEX ; FRANCE, vol. RAN WG1, no. Reno, USA; 20191118 - 20191122, 8 November 2019 (2019-11-08), Mobile Competence Centre ; 650, route des Lucioles ; F-06921 Sophia-Antipolis Cedex ; France , XP051819976 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20230043213A1 (en) * 2019-01-11 2023-02-09 Lg Electronics Inc. Method for transmitting a feedback information in a wireless communication system
US11764838B2 (en) * 2019-01-11 2023-09-19 Lg Electronics Inc. Method for transmitting a feedback information in a wireless communication system

Also Published As

Publication number Publication date
CN115174004A (zh) 2022-10-11

Similar Documents

Publication Publication Date Title
JP7119100B2 (ja) 通信方法およびデバイス
US11871411B2 (en) Method and apparatus for downlink data transmissions
EP4017191A1 (en) Transmission method and device, communication node and medium
US11743888B2 (en) Method and apparatus for short PDCCH operation
JP2022097648A (ja) フィードバック情報を決定するための方法、端末装置、およびネットワーク装置
JP6526231B2 (ja) 制御情報を送信するための方法、ユーザ機器、及び基地局
EP3920444A1 (en) Index information transmission method, device, storage medium, and electronic device
US20140321382A1 (en) Communication Method, Base Station, and User Equipment
JP2021524215A (ja) チャネル設定方法及び端末
WO2016155305A1 (zh) 用户设备、网络设备和确定物理上行控制信道资源的方法
WO2019030563A1 (en) METHOD AND APPARATUS FOR MONITORING CONTROL CANDIDATES BASED ON DATA PACKET ATTRIBUTIONS HAVING DIFFERENT RELIABILITY
WO2017028014A1 (zh) 一种信息发送、接收方法及设备
WO2020228542A1 (zh) 一种发送和接收harq-ack消息的方法及装置
CN111147190B (zh) 反馈应答信息的传输方法、装置及系统
WO2020025063A1 (zh) 一种通信方法及装置
WO2022213528A1 (zh) 混合自动重传请求反馈传输方法、终端、基站和通信系统
CN115189844A (zh) 混合自动重传请求反馈传输方法、终端、基站和通信系统
JP2019216460A (ja) 情報送信方法、情報受信方法、およびデバイス

Legal Events

Date Code Title Description
121 Ep: the epo has been informed by wipo that ep was designated in this application

Ref document number: 21935747

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 21935747

Country of ref document: EP

Kind code of ref document: A1