WO2021197317A1 - Procédé de rétroaction de demande de répétition automatique hybride (harq), terminal et noeud de réseau associés - Google Patents

Procédé de rétroaction de demande de répétition automatique hybride (harq), terminal et noeud de réseau associés Download PDF

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Publication number
WO2021197317A1
WO2021197317A1 PCT/CN2021/083914 CN2021083914W WO2021197317A1 WO 2021197317 A1 WO2021197317 A1 WO 2021197317A1 CN 2021083914 W CN2021083914 W CN 2021083914W WO 2021197317 A1 WO2021197317 A1 WO 2021197317A1
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harq
ack
sps pdsch
codebook
pdsch
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PCT/CN2021/083914
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English (en)
Chinese (zh)
Inventor
曾超君
潘学明
鲁智
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维沃移动通信有限公司
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Publication of WO2021197317A1 publication Critical patent/WO2021197317A1/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
    • H04L1/1812—Hybrid protocols; Hybrid automatic repeat request [HARQ]
    • 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
    • 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
    • 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
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • 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
    • H04W72/04—Wireless resource allocation
    • H04W72/044—Wireless resource allocation based on the type of the allocated resource
    • H04W72/0446—Resources in time domain, e.g. slots or frames

Definitions

  • the present invention relates to the field of communication technology, in particular to a hybrid automatic repeat request response feedback method, a terminal and a network node.
  • the UE for the transmission or transmission part of SPS (Semi-Persistent Scheduling) PDSCH (Physical Downlink Shared Channel) skipped by the base station, the UE (terminal) always feeds back HARQ (Hybrid) normally. Automatic Repeat reQuest, hybrid automatic repeat request)-ACK (response), for example, NACK (negative response) is fed back for completely skipped SPS PDSCH transmission.
  • SPS-Config configuration
  • the HARQ-ACK feedback overhead is large and the feedback efficiency is low.
  • the efficiency of the HARQ-ACK feedback by the UE is low and needs to be improved.
  • the embodiments of the present invention provide a hybrid automatic repeat request response feedback method, a terminal, and a network node to solve the existing scenario of SPS PDSCH transmission or SPS PDSCH partial transmission where the base station skips certain SPS PDSCH transmission opportunities, and the UE feedbacks The problem of low efficiency of HARQ-ACK.
  • the present invention adopts the following solutions:
  • an embodiment of the present invention provides a hybrid automatic repeat request response feedback method, which is applied to a terminal, and includes:
  • the embodiment of the present invention also provides a hybrid automatic repeat request response feedback method, which is applied to a network node, and includes:
  • the HARQ-ACK feedback behavior of the terminal is determined.
  • an embodiment of the present invention also provides a terminal, including:
  • the first determining module is configured to determine the first semi-persistent scheduling physical downlink shared channel SPS PDSCH, where the first SPS PDSCH does not need to feed back the hybrid automatic repeat request response HARQ-ACK;
  • the second determining module is configured to determine the HARQ-ACK feedback behavior according to the preset rule and the first SPS PDSCH.
  • an embodiment of the present invention also provides a network node, including:
  • the third determining module is configured to determine the first semi-persistent scheduling physical downlink shared channel SPS PDSCH, where the first SPS PDSCH does not need to feed back the hybrid automatic repeat request response HARQ-ACK;
  • the first judgment module is configured to judge the HARQ-ACK feedback behavior of the terminal according to the preset rule adopted by the terminal and the first SPS PDSCH.
  • an embodiment of the present invention also provides a terminal, including: a memory, a processor, and a computer program stored in the memory and capable of running on the processor.
  • the computer program is executed by the processor to realize the above-mentioned terminal The steps of the hybrid automatic retransmission request response feedback method on the side.
  • an embodiment of the present invention also provides a network node, including: a memory, a processor, and a computer program stored on the memory and running on the processor.
  • the computer program is executed by the processor to realize the above The steps of the hybrid automatic retransmission request response feedback method on the network node side.
  • an embodiment of the present invention also provides a computer-readable storage medium having a computer program stored on the computer-readable storage medium, and when the computer program is executed by a processor, the above-mentioned hybridization on the terminal side or the network card node side is realized.
  • the steps of the automatic retransmission request response feedback method are realized.
  • the first semi-persistent scheduling physical downlink shared channel SPS PDSCH is determined, wherein the first SPS PDSCH does not need to feed back the hybrid automatic repeat request response HARQ-ACK; according to preset rules and the first SPS PDSCH, Determine the HARQ-ACK feedback behavior; it can realize the scenario of SPS PDSCH transmission or SPS PDSCH partial transmission where the base station skips certain SPS PDSCH transmission opportunities, and introduce the HARQ-ACK feedback scheme that saves HARQ-ACK feedback bits to improve HARQ-ACK feedback Efficiency: It solves the problem of low efficiency of HARQ-ACK feedback by the UE in the scenario of SPS PDSCH transmission or SPS PDSCH partial transmission where the base station skips certain SPS PDSCH transmission opportunities.
  • FIG. 1 shows a schematic flow chart of a method for responding to a hybrid automatic repeat request response according to an embodiment of the present invention
  • FIG. 2 shows a schematic diagram of the second flow of a method for responding to a hybrid automatic repeat request response according to an embodiment of the present invention
  • Fig. 3 shows a schematic diagram of SPS PDSCH HARQ-ACK feedback according to an embodiment of the present invention
  • FIG. 4 shows a schematic diagram 1 of a terminal structure according to an embodiment of the present invention
  • Figure 5 shows a second schematic diagram of a terminal structure according to an embodiment of the present invention.
  • FIG. 6 shows a schematic diagram 1 of a network node structure according to an embodiment of the present invention
  • FIG. 7 shows a second schematic diagram of the structure of a network node according to an embodiment of the present invention.
  • the present invention addresses the problem of low efficiency of HARQ-ACK feedback by the UE in the existing SPS PDSCH transmission or SPS PDSCH partial transmission scenarios where the base station skips certain SPS PDSCH transmission opportunities.
  • the embodiment of the present invention provides a hybrid automatic retransmission.
  • the request response feedback method firstly, the relevant content involved in the embodiment of the present invention is explained here:
  • the unlicensed band can be used as a supplement to the licensed band (Licensed Band) to help operators expand the service.
  • the unlicensed frequency band is shared by multiple technologies (Radio Access Technology, RAT, wireless access technology), such as Wi-Fi (wireless fidelity), radar, and LTE-based authorized spectrum to assist access to unlicensed spectrum (LTE-based Licensed-Assisted Access, LTE-LAA), etc. Therefore, in some countries or regions, the use of unlicensed frequency bands must comply with regulatory regulations to ensure that all devices can share the resources fairly. For example, listen to the channel before transmission (Listen Before Talk). , LBT), Maximum Channel Occupancy Time (MCOT), etc.
  • a transmission node When a transmission node needs to send information, it is required to perform LBT on the designated wireless channel first, and perform Energy Detection (ED) on the surrounding wireless transmission environment. When the energy is lower than a certain threshold, the channel is judged to be idle. Before you can start the transfer. Otherwise, it is judged that the channel is busy and the transmission node cannot send.
  • the transmission node may be a base station, UE, Wi-Fi AP (Access Point, access point), etc. After the transmission node starts transmission, the occupied channel time cannot exceed MCOT.
  • HARQ-ACK Codebook When the UE organizes the HARQ-ACK bit sequence that needs to be reported at a certain feedback moment, based on the predefined rules and the scheduling of the single or multiple carriers that need to report HARQ-ACK at this feedback moment, determine each Correspondence between downlink PDSCH transmission and a certain bit in the organized HARQ-ACK bit sequence, this operation is called constructing HARQ-ACK Codebook or HARQ-ACK Codebook scheme.
  • Related technologies use two HARQ-ACK Codebook solutions: semi-static codebook (Type-1) and dynamic codebook (Type-2):
  • the semi-static codebook organizes the HARQ-ACK codebook from the perspective of candidate PDSCH reception.
  • the size of the codebook is related to the high-level configuration and is relatively stable: based on the HARQ-ACK feedback Timing (timing) configuration table (that is, the K 1 set configured by the high-level) )
  • Timing Timing
  • each possible PDSCH time domain allocation for each possible scheduling time based on a certain K 1 value in the HARQ-ACK feedback Timing configuration table, this PDSCH time domain allocation corresponds to HARQ -
  • the ACK feedback moment is exactly the moment when the HARQ-ACK bit sequence is reported; various possible PDSCH time domain resource allocations are provided by the PDSCH time domain resource allocation table specified by the protocol or configured by the higher layer).
  • Corresponding feedback bits are reserved, if For a possible PDSCH time domain allocation, the UE does not actually detect its corresponding network scheduling indication, and then sets its corresponding feedback bit to NACK (Negative Response), otherwise according to the PDSCH time domain allocation corresponding PDSCH transmission Decode the result and set its corresponding feedback bit;
  • NACK Negative Response
  • the dynamic codebook organizes the HARQ-ACK codebook from the perspective of PDCCH reception.
  • the size of the codebook is related to the actual scheduling situation of the base station. It is relatively dynamic: DAI (Downlink Assignment) is performed on the actually scheduled PDSCH transmission and/or SPS PDSCH release indication.
  • Index (downlink allocation index) counting method reserved feedback bits for each actual DAI value, if the UE infers that some DAI corresponding PDSCH allocation instructions or SPS PDSCH release instructions have not been received through other DAI detected
  • NR-U NR-based Access to Unlicensed Spectrum, based on NR access to the unlicensed spectrum, that is, the new air interface unlicensed frequency band
  • the main enhancements introduced for the dynamic codebook include:
  • Each PDSCH group maintains an NFI (New Feedback Indicator), which is inverted (NFI is represented by 1 bit, converted from 0 to 1, or converted from 1 to 0, which is considered to be inverted. If the value does not change, it is considered that no overturn has occurred) indicating whether only new feedback is transmitted or the previous feedback needs to be retransmitted; if the NFI is overturned, all feedback for this PDSCH packet before the DCI indicating that the NFI is overturned will be discarded, Only transmit this DCI and the subsequent HARQ-ACK feedback for the PDSCH scheduled for this PDSCH packet.
  • NFI New Feedback Indicator
  • a single DCI can request the HARQ-ACK feedback of one or more PDSCH groups to be transmitted on the same PUCCH.
  • a single downlink scheduling DCI requests the HARQ-ACK feedback of the PDSCH group corresponding to the PDSCH scheduled by itself by default. This DCI It can also trigger the HARQ-ACK feedback of other PDSCH packets to be transmitted together on the PUCCH indicated by it.
  • the maximum number of PDSCH packets supported is 2.
  • the UE can indicate whether to support the enhanced dynamic codebook through the capability information.
  • a One-shot HARQ-ACK codebook feedback mechanism is introduced. It can also be called a Type-3 codebook, which feeds back HARQ-ACK information for all possible codewords of all HARQ processes configured on all carriers currently configured for the UE.
  • the HARQ-ACK with CBG (Code Block Group) granularity can also be fed back by the network configuration to support CBG-based retransmission.
  • the traversal order of each dimension is: CBG index (index), TB (Transport Block) index, HARQ process (process) ID (identification), Serving (service) cell (cell) index ;
  • the first index is traversed first.
  • the NDI is appended to the HARQ-ACK information of the corresponding TB.
  • the wireless communication system introduces SPS PDSCH (Semi-persistent PDSCH: PDSCH transmission that is periodically initiated after the downlink SPS transmission is activated, and these PDSCH transmissions do not have a corresponding DCI indication and are transmitted based on a predefined method) transmission.
  • SPS PDSCH Semi-persistent PDSCH: PDSCH transmission that is periodically initiated after the downlink SPS transmission is activated, and these PDSCH transmissions do not have a corresponding DCI indication and are transmitted based on a predefined method
  • the network side guarantees that in a certain serving cell group configured for the UE, at most only a single serving cell is configured with the SPS-Config (configuration) configuration item, and the corresponding SPS PDSCH transmission interval is at least 10 milliseconds.
  • the UE feeds back the HARQ-ACK corresponding to this SPS PDSCH transmission in time slot n+k, where k is determined by the PDSCH-to-HARQ-timing in the DCI that activates this SPS PDSCH transmission -indicator (PDSCH to HARQ-ACK timing indicator) indicator field to determine.
  • k is determined by the PDSCH-to-HARQ-timing in the DCI that activates this SPS PDSCH transmission -indicator (PDSCH to HARQ-ACK timing indicator) indicator field to determine.
  • Case 1 When the UE only needs to feed back HARQ-ACK for (single) SPS PDSCH reception, the UE only feeds back the Codebook containing the corresponding 1-bit HARQ-ACK.
  • Case 2 In cases other than 1, the UE organizes the Codebook from the perspective of candidate PDSCH reception.
  • the candidate PDSCH reception corresponds to (single) SPS PDSCH reception, the corresponding HARQ-ACK bit setting for this candidate PDSCH reception For this, the HARQ-ACK information of the SPS PDSCH.
  • the network side can configure multiple sets of SPS-Config configuration items that take effect at the same time for a single UE (a BWP (BandWidth Part, bandwidth part) of a single serving cell) at most can be simultaneously Configure 8 sets), and the corresponding SPS PDSCH transmission interval can be shortened to a minimum of a single time slot.
  • a BWP BandWidth Part, bandwidth part
  • one bit extension can be multiple bits (which can be called case 4 and case 5 respectively, case 4 is an extension of case 1, and case 5 is an extension of case 3).
  • the bits correspond to the HARQ-ACKs of different SPS-Configs on different serving cells.
  • the traversal order of each dimension when organizing the HARQ-ACK bit sequence is: first traverse the downlink Slot( in ascending order for a certain ⁇ SPS configuration index, serving cell index ⁇ combination Time slot), and then traverse the SPS configuration index for a certain ⁇ serving cell index ⁇ in ascending order, and finally traverse the serving cell index in ascending order.
  • the HARQ-ACK bit corresponding to the SPS PDSCH can be attached to the HARQ-ACK bit sequence corresponding to a certain PDSCH group for dynamically scheduled PDSCH and SPS PDSCH release, and the HARQ corresponding to the SPS PDSCH -
  • the organization of ACK bits can refer to the traversal sequence when extending the bits for Case 1 and Case 3.
  • NR New Radio, new air interface
  • base stations may skip one or some SPS (Semi-Persistent Scheduling, semi-persistent scheduling) PDSCH (Physical Downlink Shared Channel, physical downlink shared channel) transmission opportunities in many situations SPS PDSCH transmission, or partial transmission of SPS PDSCH, these situations include at least:
  • the base station When the SPS PDSCH transmission opportunity approaches or arrives, the base station has no downlink data to send;
  • the base station is working in an unlicensed frequency band.
  • LBT Listen Before Talk, listening channel
  • the SPS PDSCH transmission opportunity (corresponding Part of the SPS PDSCH transmission before repeated transmissions) failed LBT leading to incomplete SPS PDSCH transmission;
  • the base station In order to avoid occupying a certain HARQ (Hybrid Automatic Repeat reQuest) process (for example, there is data to be decoded or waiting for retransmission in the corresponding HARQ process), the base station intentionally ignores a certain SPS PDSCH transmission opportunity.
  • HARQ Hybrid Automatic Repeat reQuest
  • SPS PDSCH release refers to the deactivated DCI issued by the network side to release the activated SPS PDSCH transmission
  • the SPS PDSCH here refers to the PDSCH transmission based on the allocation of configured resources within a certain SPS PDSCH transmission opportunity determined based on the period and offset in the downlink SPS configuration after a certain downlink SPS configuration is activated, PDSCH
  • the time-frequency resource corresponding to the transmission is indicated by the most recently activated DCI, that is, the configuration resource allocation is indicated by the most recently activated DCI.
  • all repeated transmission opportunities corresponding to this SPS PDSCH transmission opportunity correspond to this SPS PDSCH.
  • it corresponds to a certain SPS PDSCH transmission opportunity and corresponds to a single HARQ-ACK feedback.
  • a single SPS PDSCH corresponds to a single HARQ-ACK bit, that is, a single HARQ-ACK feedback corresponds to 1 bit.
  • Incomplete transmission means that each repeated transmission opportunity in a certain SPS PDSCH transmission opportunity is not fully utilized, which meets the preset threshold requirements for incomplete transmission.
  • the incomplete transmission in the embodiment of the present invention may also be the incomplete transmission of the dynamically scheduled PDSCH, which is not limited here.
  • a hybrid automatic repeat request response feedback method provided by an embodiment of the present invention, which is applied to a terminal, as shown in FIG. 1, includes:
  • Step 101 Determine the first semi-persistent scheduling physical downlink shared channel SPS PDSCH, where the first SPS PDSCH does not need to feed back the hybrid automatic repeat request response HARQ-ACK;
  • Step 102 Determine the HARQ-ACK feedback behavior according to the preset rule and the first SPS PDSCH.
  • the determined first SPS PDSCH may be an SPS PDSCH set, and the set may include 0 or at least one SPS PDSCH corresponding to HARQ-ACK that does not need to be fed back, which is not limited herein.
  • the preset rule includes at least one of the following rules:
  • Rule 1 In the case that no other HARQ-ACK needs to be fed back except for the HARQ-ACK corresponding to the first SPS PDSCH, the HARQ-ACK codebook is not fed back; otherwise, the first HARQ-ACK codebook is fed back.
  • the first HARQ-ACK codebook is a complete codebook
  • Rule 2 In the case that no other HARQ-ACK needs to be fed back except for the HARQ-ACK corresponding to the first SPS PDSCH, the HARQ-ACK codebook is not fed back; otherwise, if the first condition is met, the first HARQ-ACK is fed back. A HARQ-ACK codebook; if the second condition is met, the second HARQ-ACK codebook is fed back, and the second HARQ-ACK codebook is an incomplete codebook;
  • other HARQ-ACK includes: other SPS PDSCH, dynamically scheduled PDSCH and/or SPS PDSCH release corresponding HARQ-ACK.
  • the no other HARQ-ACK needs to be fed back may specifically refer to: no other SPS PDSCH, dynamically scheduled PDSCH, SPS PDSCH release, and/or other HARQ-ACK needs to be fed back to operations and/or behaviors corresponding to HARQ-ACK needs Feedback.
  • rule 3 the option of generating a complete codebook (first HARQ-ACK codebook) in rule 2 is discarded or ignored, and rule 3 can be obtained.
  • the SPS PDSCH here can be determined by the downlink SPS configuration configured for the terminal by the network side and the activated DCI detected by the terminal. Optionally, it may be further determined based on the detection or decision performed by the terminal on whether the SPS PDSCH within the predefined SPS PDSCH transmission opportunity is actually transmitted, or whether the transmission is actually complete.
  • the dynamically scheduled PDSCH and SPS PDSCH release can be determined based on the terminal's detection of downlink DCI.
  • other operations and/or behaviors that require HARQ-ACK feedback may also be determined by the terminal through detection and/or receiving behavior.
  • the condition that no other HARQ-ACK needs to be fed back includes: no other HARQ-ACK needs to be fed back in the PUCCH transmission timing of the first physical uplink control channel, where the first PUCCH transmission timing includes: The HARQ-ACK feedback of the first SPS PDSCH corresponds to the PUCCH transmission timing.
  • the PUCCH transmission timing corresponding to the HARQ-ACK feedback of the first SPS PDSCH it may specifically refer to: the corresponding PUCCH transmission timing when the HARQ-ACK feedback of the first SPS PDSCH needs to be performed;
  • the first PUCCH transmission timing is indicated or pre-defined, and can be specifically indicated dynamically in the DCI, or can be pre-configured using high-layer signaling; it is not limited here.
  • the HARQ-ACK bit corresponding to the first SPS PDSCH is set as a negative response NACK.
  • the second HARQ-ACK codebook is fed back under the second condition, including: according to all SPS PDSCHs, HARQ-ACK needs to be fed back, determining the bit sequence and the HARQ-ACK bits of each SPS PDSCH The position in the bit sequence; the HARQ-ACK bit corresponding to the first SPS PDSCH is removed from the determined bit sequence, and the remaining bit sequence is concatenated to generate the second HARQ-ACK codebook, and the remaining bits are set to each The HARQ-ACK of the corresponding SPS PDSCH; wherein, the second condition includes at least the following condition: the HARQ-ACK codebook is a semi-static codebook and only includes HARQ-ACK for at least one SPS PDSCH.
  • the HARQ-ACK codebook is a semi-static codebook and only includes HARQ-ACK for at least one SPS PDSCH
  • the HARQ-ACK codebook is a semi-static codebook, and Only the HARQ-ACK for a single SPS PDSCH is included; and/or, Case 4: The HARQ-ACK codebook is a semi-static codebook, and only includes the HARQ-ACK for one or more SPS PDSCHs.
  • the feeding back the first HARQ-ACK codebook when the first condition is satisfied, or the feeding back the second HARQ-ACK codebook when the second condition is satisfied includes: according to each Configure the first SPS PDSCH on the carrier, other SPS PDSCHs that need to feed back HARQ-ACK, and dynamically schedule the reception and/or detection of PDSCH and SPS PDSCH release, and perform the first for the constructed complete HARQ-ACK codebook
  • the preset operation obtains the first HARQ-ACK codebook or the second HARQ-ACK codebook; wherein, the first condition and/or the second condition include at least the following conditions: the HARQ-ACK codebook It is a semi-static codebook, and one or more candidate PDSCHs receive the corresponding SPS PDSCH (corresponding to the following case 2).
  • the first SPS PDSCH on each configured carrier, other SPS PDSCHs that need to feed back HARQ-ACK, and the reception and/or detection of the dynamic scheduled PDSCH and SPS PDSCH release specifically: the first SPS PDSCH The reception and/or detection status of other SPS PDSCHs that require HARQ-ACK feedback, the reception and/or detection status of the dynamic scheduling PDSCH, and the reception and/or detection status of the SPS PDSCH release.
  • the "constructed complete HARQ-ACK codebook” it can be constructed from the perspective of candidate PDSCH reception, but it is not limited to this.
  • the first preset operation includes at least one of the following operations: Operation 1: Based on the constructed complete HARQ-ACK codebook, remove the first SPS PDSCH corresponding to each configured carrier The second HARQ-ACK codebook is generated by concatenating the remaining bits in sequence, and the remaining bits are set to values according to preset specifications; operation 2: on the basis of the constructed complete HARQ-ACK codebook, According to the first SPS PDSCH on each configured carrier, and other SPS PDSCHs that require HARQ-ACK feedback, dynamically scheduled PDSCH and SPS PDSCH release conditions, perform the second preset operation to generate the first HARQ-ACK codebook Or the second HARQ-ACK codebook.
  • the second preset operation includes: performing at least one of the following operations for each configured carrier; then sequentially cascading the remaining bit sequences of each configured carrier to generate the first HARQ-ACK codebook Or the second HARQ-ACK codebook; the operation includes: in the case that the configured carrier satisfies a preset condition, removing bits corresponding to the configured carrier from the constructed complete HARQ-ACK codebook sequence;
  • the complete HARQ-ACK bit sequence corresponding to the configured carrier is reserved, and the bit corresponding to the first SPS PDSCH on the configured carrier is set to NACK, and the other bits Set according to the preset specification; or, remove the HARQ-ACK bit corresponding to the first SPS PDSCH on the configured carrier from the complete HARQ-ACK bit sequence corresponding to the configured carrier, and the remaining bits are based on the Preset specification setting values;
  • the preset condition means that apart from the first SPS PDSCH on the configured carrier, there is no other SPS PDSCH that needs to feed back HARQ-ACK, dynamic scheduling PDSCH, and SPS PDSCH release.
  • the second preset operation is an operation for a single configured carrier;
  • the "remaining bit sequence sequence cascade to generate the first HARQ-ACK codebook or the second HARQ-ACK codebook" may specifically be :
  • the remaining bits are sequentially cascaded to generate the first HARQ-ACK codebook or the second HARQ-ACK codebook after setting values based on a preset specification.
  • Each configured carrier involved in the second preset operation: these configured carriers feed back HARQ-ACK on the same uplink carrier; in related protocols, all configured carriers configured for a single UE can be divided into more than one group , Each group of configured carriers feeds back HARQ-ACK on the same uplink carrier, and constructs HARQ-ACK Codebook as required.
  • the involved "complete HARQ-ACK bit sequence" may be a complete HARQ-ACK bit sequence generated from the perspective of candidate PDSCH reception, but it is not limited to this.
  • the second HARQ-ACK codebook is fed back under the second condition, including: according to all SPS PDSCHs, HARQ-ACK needs to be fed back, determining the bit sequence and the HARQ-ACK bits of each SPS PDSCH The position in the bit sequence; remove the HARQ-ACK bit corresponding to the first SPS PDSCH from the determined bit sequence, concatenate the remaining bit sequence, and place it after the first target HARQ-ACK bit sequence to obtain the The second HARQ-ACK codebook; wherein the first target HARQ-ACK bit sequence is determined based on physical uplink control channel PDCCH detection or downlink allocation index DAI count, and the remaining bits are set to the corresponding SPS PDSCH HARQ-ACK; wherein, the second condition includes at least the following conditions: the HARQ-ACK codebook is a dynamic codebook, and the codebook tail includes HARQ-ACK for at least one SPS PDSCH.
  • the HARQ-ACK codebook is a dynamic codebook, and the tail of the codebook contains HARQ-ACK for at least one SPS PDSCH
  • the second HARQ-ACK codebook is fed back under the second condition, including: according to all SPS PDSCHs, HARQ-ACK needs to be fed back, determining the bit sequence and the HARQ-ACK bits of each SPS PDSCH The position in the bit sequence; the HARQ-ACK bit corresponding to the first SPS PDSCH is removed from the determined bit sequence, and the remaining bits are concatenated in sequence and placed in the HARQ-ACK corresponding to the preset physical uplink shared channel group PDSCH group The end of the bit sequence, or the end of the entire codebook, to obtain the second HARQ-ACK codebook; wherein the remaining bits are set to the HARQ-ACK of the respective SPS PDSCH; wherein, the second condition is at least It includes the following conditions: the HARQ-ACK codebook is an enhanced dynamic codebook, and the HARQ-ACK bit sequence corresponding to the preset PDSCH group includes HARQ-ACK for at least one SPS PDSCH, or the
  • the feeding back the first HARQ-ACK codebook when the first condition is satisfied includes: adopting the following operation to determine the first HARQ-ACK codebook: the operation includes: Suppose that the codebook size is determined by the specification and no bit removal is performed to obtain the first HARQ-ACK codebook; wherein, based on the situation of the first PDSCH, the HARQ-ACK information of the first HARQ process is set; the first HARQ process and the first HARQ process One SPS PDSCH correspondence; wherein, the first condition includes at least the following conditions: the HARQ-ACK codebook is a one-shot feedback codebook, and at least one HARQ process of at least one configured carrier corresponds to the SPS PDSCH (corresponding to The following case 7): The first PDSCH is the last dynamically scheduled PDSCH or SPS PDSCH actually received or actually completely received by the first HARQ process before the first SPS PDSCH.
  • the first HARQ process corresponds to the first SPS PDSCH
  • the HARQ-ACK information here may further include other related information, such as NDI, etc., please refer to the above-mentioned related descriptions of configuring and not configuring to report NDI, which will not be repeated here.
  • the last dynamically scheduled PDSCH or SPS PDSCH actually received or actually completely received is determined according to the physical uplink shared channel processing time PDSCH processing time capability supported by the terminal.
  • feeding back the second HARQ-ACK codebook when the second condition is met includes: adopting the following operation to determine the second HARQ-ACK codebook: the operation includes: determining according to a preset specification In the codebook of the second HARQ process, all the HARQ-ACK information bits corresponding to the second HARQ process are removed, and the remaining bit sequence is concatenated to generate the second HARQ-ACK codebook; wherein, the second HARQ process is the first The HARQ process corresponding to an SPS PDSCH; the remaining bits are set according to a preset specification; wherein, the second condition includes at least the following condition: the HARQ-ACK codebook is a one-shot one-shot feedback codebook, at least At least one HARQ process of one configured carrier corresponds to SPS PDSCH (corresponding to the following case 7).
  • the HARQ-ACK information here may further include other related information, such as NDI, etc., please refer to the above-mentioned related descriptions of configuring and not configuring to report NDI, which will not be repeated here.
  • the determining the first semi-persistent scheduling physical downlink shared channel SPS PDSCH includes: determining that the SPS PDSCH is the first SPS PDSCH when it is detected that the SPS PDSCH is not actually transmitted.
  • the determination of the first semi-persistent scheduling physical downlink shared channel SPS PDSCH includes: when repeated transmission of SPS PDSCH is configured and incomplete SPS PDSCH transmission is detected, then determining that SPS PDSCH is the first SPS PDSCH.
  • the incomplete transmission of the SPS PDSCH includes at least one of the following situations: the number of PDSCHs actually transmitted by the SPS PDSCH is less than the configured or predefined number of repeated transmissions, or the number of PDSCHs actually transmitted is less than the configured or predefined number of repeated transmissions.
  • the preset ratio of the number of repeated transmissions; and, the PDSCH actually transmitted by the SPS PDSCH does not cover the preset redundancy version or does not cover all the redundancy versions in the preset redundancy version set; wherein, the preset ratio is determined by the agreement Provision or high-level configuration; the preset redundancy version is defined by the protocol or configured by the high-level; the set of preset redundancy versions is defined by the protocol or configured by the high-level.
  • the number of repeated transmissions here can be configured by higher layers, but is not limited to this.
  • the hybrid automatic repeat request response feedback method determines the first semi-persistent scheduling physical downlink shared channel SPS PDSCH, wherein the first SPS PDSCH does not need to feed back the hybrid automatic repeat request response HARQ-ACK ;
  • the HARQ-ACK feedback behavior is determined; it can realize the scenario of SPS PDSCH transmission or SPS PDSCH partial transmission where the base station skips certain SPS PDSCH transmission opportunities, introducing saving HARQ-ACK feedback
  • the bit-based HARQ-ACK feedback scheme improves the efficiency of HARQ-ACK feedback; it solves the existing SPS PDSCH transmission or SPS PDSCH partial transmission scenarios where the base station skips certain SPS PDSCH transmission opportunities, and the UE feeds back HARQ-ACK The problem of low efficiency.
  • the embodiment of the present invention also provides a hybrid automatic repeat request response feedback method, which is applied to a network node, as shown in FIG. 2, includes:
  • Step 201 Determine the first semi-persistent scheduling physical downlink shared channel SPS PDSCH, where the first SPS PDSCH does not need to feed back the hybrid automatic repeat request response HARQ-ACK;
  • Step 202 Determine the HARQ-ACK feedback behavior of the terminal according to the preset rule adopted by the terminal and the first SPS PDSCH.
  • the determined first SPS PDSCH may be an SPS PDSCH set, and the set may include 0 or at least one SPS PDSCH corresponding to HARQ-ACK that does not need to be fed back, which is not limited herein.
  • the network node can be specifically a base station.
  • the preset rule includes at least one of the following rules:
  • Rule 1 In the case that no other HARQ-ACK needs to be fed back except for the HARQ-ACK corresponding to the first SPS PDSCH, the HARQ-ACK codebook is not fed back; otherwise, the first HARQ-ACK codebook is fed back.
  • the first HARQ-ACK codebook is a complete codebook
  • Rule 2 In the case that no other HARQ-ACK needs to be fed back except for the HARQ-ACK corresponding to the first SPS PDSCH, the HARQ-ACK codebook is not fed back; otherwise, if the first condition is met, the first HARQ-ACK is fed back. A HARQ-ACK codebook; if the second condition is met, the second HARQ-ACK codebook is fed back, and the second HARQ-ACK codebook is an incomplete codebook;
  • other HARQ-ACK includes: other SPS PDSCH, dynamically scheduled PDSCH and/or SPS PDSCH release corresponding HARQ-ACK.
  • the no other HARQ-ACK needs to be fed back may specifically refer to: no other SPS PDSCH, dynamically scheduled PDSCH, SPS PDSCH release, and/or other HARQ-ACK needs to be fed back to operations and/or behaviors corresponding to HARQ-ACK needs Feedback.
  • rule 3 the option of generating a complete codebook (first HARQ-ACK codebook) in rule 2 is discarded or ignored, and rule 3 can be obtained.
  • the SPS PDSCH here can be determined by the downlink SPS configuration configured for the terminal by the network side and the activated DCI detected by the terminal. Optionally, it may be further determined based on the detection or decision performed by the terminal on whether the SPS PDSCH within the predefined SPS PDSCH transmission opportunity is actually transmitted, or whether the transmission is actually complete.
  • the dynamically scheduled PDSCH and SPS PDSCH release can be determined based on the terminal's detection of downlink DCI.
  • other operations and/or behaviors that require HARQ-ACK feedback may also be determined by the terminal through detection and/or receiving behavior.
  • the condition that no other HARQ-ACK needs to be fed back includes: no other HARQ-ACK needs to be fed back in the PUCCH transmission timing of the first physical uplink control channel, where the first PUCCH transmission timing includes: The HARQ-ACK feedback of the first SPS PDSCH corresponds to the PUCCH transmission timing.
  • the PUCCH transmission timing corresponding to the HARQ-ACK feedback of the first SPS PDSCH it may specifically refer to: the corresponding PUCCH transmission timing when the HARQ-ACK feedback of the first SPS PDSCH needs to be performed;
  • the first PUCCH transmission timing is indicated or pre-defined, and can be specifically indicated dynamically in the DCI, or can be pre-configured using high-layer signaling; it is not limited here.
  • the HARQ-ACK bit corresponding to the first SPS PDSCH is set as a negative response NACK.
  • the second HARQ-ACK codebook is fed back under the second condition, including: according to all SPS PDSCHs, HARQ-ACK needs to be fed back, determining the bit sequence and the HARQ-ACK bits of each SPS PDSCH The position in the bit sequence; the HARQ-ACK bit corresponding to the first SPS PDSCH is removed from the determined bit sequence, and the remaining bit sequence is concatenated to generate the second HARQ-ACK codebook, and the remaining bits are set to each The HARQ-ACK of the corresponding SPS PDSCH; wherein, the second condition includes at least the following condition: the HARQ-ACK codebook is a semi-static codebook and only includes HARQ-ACK for at least one SPS PDSCH.
  • the HARQ-ACK codebook is a semi-static codebook and only includes HARQ-ACK for at least one SPS PDSCH
  • the HARQ-ACK codebook is a semi-static codebook, and Only the HARQ-ACK for a single SPS PDSCH is included; and/or, Case 4: The HARQ-ACK codebook is a semi-static codebook, and only includes the HARQ-ACK for one or more SPS PDSCHs.
  • the feeding back the first HARQ-ACK codebook when the first condition is satisfied, or the feeding back the second HARQ-ACK codebook when the second condition is satisfied includes: according to each Configure the first SPS PDSCH on the carrier, other SPS PDSCHs that need to feed back HARQ-ACK, and dynamically schedule the reception and/or detection of PDSCH and SPS PDSCH release, and perform the first for the constructed complete HARQ-ACK codebook
  • the preset operation obtains the first HARQ-ACK codebook or the second HARQ-ACK codebook; wherein, the first condition and/or the second condition include at least the following conditions: the HARQ-ACK codebook It is a semi-static codebook, and one or more candidate PDSCHs receive the corresponding SPS PDSCH (corresponding to the following case 2).
  • the first SPS PDSCH on each configured carrier, other SPS PDSCHs that need to feed back HARQ-ACK, and the reception and/or detection of the dynamic scheduled PDSCH and SPS PDSCH release specifically: the first SPS PDSCH The reception and/or detection status of other SPS PDSCHs that require HARQ-ACK feedback, the reception and/or detection status of the dynamic scheduling PDSCH, and the reception and/or detection status of the SPS PDSCH release.
  • the "constructed complete HARQ-ACK codebook” it can be constructed from the perspective of candidate PDSCH reception, but it is not limited to this.
  • the first preset operation includes at least one of the following operations: Operation 1: Based on the constructed complete HARQ-ACK codebook, remove the first SPS PDSCH corresponding to each configured carrier The second HARQ-ACK codebook is generated by concatenating the remaining bits in sequence, and the remaining bits are set to values according to preset specifications; operation 2: on the basis of the constructed complete HARQ-ACK codebook, According to the first SPS PDSCH on each configured carrier, and other SPS PDSCHs that require HARQ-ACK feedback, dynamically scheduled PDSCH and SPS PDSCH release conditions, perform the second preset operation to generate the first HARQ-ACK codebook Or the second HARQ-ACK codebook.
  • the second preset operation includes: performing at least one of the following operations for each configured carrier; then sequentially cascading the remaining bit sequences of each configured carrier to generate the first HARQ-ACK codebook Or the second HARQ-ACK codebook; the operation includes: in the case that the configured carrier satisfies a preset condition, removing bits corresponding to the configured carrier from the constructed complete HARQ-ACK codebook sequence;
  • the complete HARQ-ACK bit sequence corresponding to the configured carrier is reserved, and the bit corresponding to the first SPS PDSCH on the configured carrier is set to NACK, and the other bits Set according to the preset specification; or, remove the HARQ-ACK bit corresponding to the first SPS PDSCH on the configured carrier from the complete HARQ-ACK bit sequence corresponding to the configured carrier, and the remaining bits are based on the Preset specification setting values;
  • the preset condition means that apart from the first SPS PDSCH on the configured carrier, there is no other SPS PDSCH that needs to feed back HARQ-ACK, dynamic scheduling PDSCH, and SPS PDSCH release.
  • the second preset operation is an operation for a single configured carrier;
  • the "remaining bit sequence sequence cascade to generate the first HARQ-ACK codebook or the second HARQ-ACK codebook" may specifically be :
  • the remaining bits are sequentially cascaded to generate the first HARQ-ACK codebook or the second HARQ-ACK codebook after setting values based on a preset specification.
  • Each configured carrier involved in the second preset operation: these configured carriers feed back HARQ-ACK on the same uplink carrier; in related protocols, all configured carriers configured for a single UE can be divided into more than one group , Each group of configured carriers feeds back HARQ-ACK on the same uplink carrier, and constructs HARQ-ACK Codebook as required.
  • the involved "complete HARQ-ACK bit sequence" may be a complete HARQ-ACK bit sequence generated from the perspective of candidate PDSCH reception, but it is not limited to this.
  • the second HARQ-ACK codebook is fed back under the second condition, including: according to all SPS PDSCHs, HARQ-ACK needs to be fed back, determining the bit sequence and the HARQ-ACK bits of each SPS PDSCH The position in the bit sequence; remove the HARQ-ACK bit corresponding to the first SPS PDSCH from the determined bit sequence, concatenate the remaining bit sequence, and place it after the first target HARQ-ACK bit sequence to obtain the The second HARQ-ACK codebook; wherein the first target HARQ-ACK bit sequence is determined based on physical uplink control channel PDCCH detection or downlink allocation index DAI count, and the remaining bits are set to the corresponding SPS PDSCH HARQ-ACK; wherein, the second condition includes at least the following conditions: the HARQ-ACK codebook is a dynamic codebook, and the codebook tail includes HARQ-ACK for at least one SPS PDSCH.
  • the HARQ-ACK codebook is a dynamic codebook, and the tail of the codebook contains HARQ-ACK for at least one SPS PDSCH
  • the second HARQ-ACK codebook is fed back under the second condition, including: according to all SPS PDSCHs, HARQ-ACK needs to be fed back, determining the bit sequence and the HARQ-ACK bits of each SPS PDSCH The position in the bit sequence; the HARQ-ACK bit corresponding to the first SPS PDSCH is removed from the determined bit sequence, and the remaining bits are concatenated in sequence and placed in the HARQ-ACK corresponding to the preset physical uplink shared channel group PDSCH group The end of the bit sequence, or the end of the entire codebook, to obtain the second HARQ-ACK codebook; wherein the remaining bits are set to the HARQ-ACK of the respective SPS PDSCH; wherein, the second condition is at least It includes the following conditions: the HARQ-ACK codebook is an enhanced dynamic codebook, and the HARQ-ACK bit sequence corresponding to the preset PDSCH group includes HARQ-ACK for at least one SPS PDSCH, or the
  • the feeding back the first HARQ-ACK codebook when the first condition is satisfied includes: adopting the following operation to determine the first HARQ-ACK codebook: the operation includes: Suppose that the codebook size is determined by the specification and no bit removal is performed to obtain the first HARQ-ACK codebook; wherein, based on the situation of the first PDSCH, the HARQ-ACK information of the first HARQ process is set; the first HARQ process and the first HARQ process One SPS PDSCH correspondence; wherein, the first condition includes at least the following conditions: the HARQ-ACK codebook is a one-shot feedback codebook, and at least one HARQ process of at least one configured carrier corresponds to the SPS PDSCH (corresponding to The following case 7); the first PDSCH is the last dynamically scheduled PDSCH or SPS PDSCH that the first HARQ process actually received or actually received completely before the first SPS PDSCH.
  • the first HARQ process corresponds to the first SPS PDSCH
  • the HARQ-ACK information here may further include other related information, such as NDI, etc., please refer to the above-mentioned related descriptions of configuring and not configuring to report NDI, which will not be repeated here.
  • the last dynamically scheduled PDSCH or SPS PDSCH actually received or actually completely received is determined according to the physical uplink shared channel processing time PDSCH processing time capability supported by the terminal.
  • feeding back the second HARQ-ACK codebook when the second condition is met includes: adopting the following operation to determine the second HARQ-ACK codebook: the operation includes: determining according to a preset specification In the codebook of the second HARQ process, all the HARQ-ACK information bits corresponding to the second HARQ process are removed, and the remaining bit sequence is concatenated to generate the second HARQ-ACK codebook; wherein, the second HARQ process is the first The HARQ process corresponding to an SPS PDSCH; the remaining bits are set according to a preset specification; wherein, the second condition includes at least the following condition: the HARQ-ACK codebook is a one-shot one-shot feedback codebook, at least At least one HARQ process of one configured carrier corresponds to SPS PDSCH (corresponding to the following case 7).
  • the HARQ-ACK information here may further include other related information, such as NDI, etc., please refer to the above-mentioned related descriptions of configuring and not configuring to report NDI, which will not be repeated here.
  • the determining the first semi-persistent scheduling physical downlink shared channel SPS PDSCH includes: determining that the SPS PDSCH is the first SPS PDSCH when it is detected that the SPS PDSCH is not actually transmitted.
  • the determination of the first semi-persistent scheduling physical downlink shared channel SPS PDSCH includes: when repeated transmission of SPS PDSCH is configured and incomplete SPS PDSCH transmission is detected, then determining that SPS PDSCH is the first SPS PDSCH.
  • the incomplete transmission of the SPS PDSCH includes at least one of the following situations: the number of PDSCHs actually transmitted by the SPS PDSCH is less than the configured or predefined number of repeated transmissions, or the number of PDSCHs actually transmitted is less than the configured or predefined number of repeated transmissions.
  • the preset ratio of the number of repeated transmissions; and, the PDSCH actually transmitted by the SPS PDSCH does not cover the preset redundancy version or does not cover all the redundancy versions in the preset redundancy version set; wherein, the preset ratio is determined by the agreement Provision or high-level configuration; the preset redundancy version is defined by the protocol or configured by the high-level; the set of preset redundancy versions is defined by the protocol or configured by the high-level.
  • the number of repeated transmissions here can be configured by higher layers, but is not limited to this.
  • the hybrid automatic repeat request response feedback method determines the first semi-persistent scheduling physical downlink shared channel SPS PDSCH, wherein the first SPS PDSCH does not need to feed back the hybrid automatic repeat request response HARQ-ACK ;
  • the HARQ-ACK feedback behavior of the terminal is judged; it can realize the SPS PDSCH transmission or SPS PDSCH partial transmission where the base station skips certain SPS PDSCH transmission opportunities
  • the HARQ-ACK feedback scheme that saves HARQ-ACK feedback bits is introduced to improve the efficiency of HARQ-ACK feedback; it is a good solution to the existing SPS PDSCH transmission or SPS PDSCH partial transmission for the base station to skip certain SPS PDSCH transmission opportunities
  • the UE feeds back the problem of low efficiency of HARQ-ACK.
  • rule 1 and rule 2 are taken as examples.
  • the embodiment of the present invention provides a hybrid automatic repeat request response feedback method; specifically:
  • the UE judges not to feed back HARQ-ACK for this SPS PDSCH.
  • the UE determines not to feed back HARQ-ACK for this SPS PDSCH (Note: For SPS PDSCH configured with repeated transmission, All SPS repeated transmissions corresponding to a single SPS PDSCH transmission opportunity are classified as a single SPS PDSCH transmission, and only a single HARQ-ACK is considered to be fed back; see the following description for the number of SPS PDSCH repeated transmissions corresponding to a single SPS PDSCH transmission opportunity).
  • the SPS PDSCH (or dynamically scheduled PDSCH) transmission is incomplete here, including any one or more of the following situations:
  • the actual number of PDSCHs transmitted by this SPS PDSCH is less than the configured or predefined number of repeated transmissions, or the actual number of PDSCHs transmitted is less than a certain proportion of the configured or predefined number of repeated transmissions.
  • the network configures the high-level parameter pdsch-AggregationFactor for the UE, or configures the parameter numberofrepetitions in a row of the time domain resource allocation table corresponding to the time domain resource allocation information indicated by the activated DCI, and activates the DCI as non-Fallback DCI (DCI When format 1_1 or DCI format 1_2), the configured or predefined number of repeated transmissions is pdsch-AggregationFactor or numberofrepetitions.
  • the above-mentioned ratio can be stipulated by agreement or configured by high-level.
  • pdsch-AggregationFactor represents the PDSCH aggregation factor; specifically, the concept of aggregation transmission is introduced for PUSCH and PDSCH, that is, for the set of symbols allocated in a single time slot, based on the configured aggregation factor (Aggregation Factor), in continuous multiple Repeated occurrences in three time slots (that is, there are exactly the same symbol sets in N consecutive time slots designated by the aggregation factor N, which are used to carry the scheduled PUSCH or PDSCH).
  • Aggregation Factor configured aggregation factor
  • the PUSCH or PDSCH transmitted in these multiple time slots are for the same HARQ process, and the redundancy version corresponding to the PUSCH or PDSCH transmission in each time slot is set according to a predefined value sequence based on the DCI indicator value.
  • Numberofrepetitions represents the number of repetitions; it is used to indicate the number of repetitions of PDSCH transmission corresponding to the row in the time domain resource allocation table; the corresponding repeated transmissions may not have any time interval between each other (continuous in the real-time domain), or in adjacent time slots It is done on the same set of symbols.
  • Non-Fallback DCI means non-fallback DCI, which can support information indications (IE domain; IE, Information Element, information element) corresponding to features configurable by higher layers.
  • IE domain IE, Information Element, information element
  • the PDSCH actually transmitted by this SPS PDSCH does not cover a certain or some specific redundancy version RV, for example, any PDSCH actually transmitted is not for RV0, or any PDSCH actually transmitted is not for RV0 Or RV3.
  • the UE judges not to feed back HARQ-ACK for a certain or certain SPS PDSCH, the UE adopts any of the following rules to perform HARQ-ACK feedback:
  • Rule 1 The UE can choose between not feeding back any Codebook or feeding back a complete Codebook as needed, that is, the UE is not allowed to feed back an incomplete Codebook; specifically:
  • the complete Codebook described here can be understood as the HARQ-ACK Codebook with the corresponding construction method specified in NR Rel-15 or 16, which can be Type-1 HARQ-ACK codebook (semi-static codebook), Type-2 HARQ-ACK codebook (dynamic codebook), enhanced Type-2 HARQ-ACK codebook (enhanced dynamic codebook) or Type-3 HARQ-ACK codebook (one-shot feedback codebook).
  • Type-1 HARQ-ACK codebook semi-static codebook
  • Type-2 HARQ-ACK codebook dynamic codebook
  • enhanced Type-2 HARQ-ACK codebook enhanced dynamic codebook
  • Type-3 HARQ-ACK codebook one-shot feedback codebook
  • HARQ-ACK means transmitting a complete HARQ-ACK codebook, and the HARQ-ACK bits corresponding to this or these SPS PDSCHs in the complete codebook are all set to NACK.
  • the UE has no other valid HARQ-ACK to be fed back. It can be understood that for the specified PUCCH transmission occasion (PUCCH transmission opportunity), there is no other SPS PDSCH except the one or those SPS PDSCH that the UE judges not to feed back the HARQ-ACK, The dynamically scheduled PDSCH, SPS PDSCH release, and other HARQ-ACK operations and/or behaviors that require feedback of HARQ-ACK need to be fed back in the PUCCH transmission occasion (physical uplink control channel transmission opportunity) specified here.
  • Rule 2 UE is allowed to feedback incomplete Codebooks as needed, that is, choose not to feedback any Codebook, feedback incomplete Codebook, or feedback complete Codebook; specifically:
  • the UE determines that there is no other valid HARQ-ACK to be fed back except for the HARQ-ACK corresponding to the SPS PDSCH that does not need to feed back the HARQ-ACK, the UE does not feed back any HARQ-ACK; when the UE has other valid HARQ-ACKs that need to be fed back , The UE removes the HARQ-ACK bits for this or these SPS PDSCHs (that do not need to be fed back) from the codebook that is finally fed back, and can further delete related bits as needed.
  • situations involving HARQ-ACK feedback of SPS PDSCH may include the following:
  • Case 1 Type-1 Codebook (semi-static codebook), and only contains HARQ-ACK (1 bit) for a single SPS PDSCH;
  • Case 4 Type-1 Codebook, and only contains HARQ-ACK for one or more SPS PDSCH;
  • Case 2 Type-1 Codebook, and one or more candidate PDSCHs receive the corresponding SPS PDSCH;
  • Case 3 Type-2 Codebook (dynamic codebook), and the end of the Codebook contains HARQ-ACK for a single SPS PDSCH;
  • Case 5 Type-2 Codebook, and the end of the Codebook contains HARQ-ACK for one or more SPS PDSCH;
  • Case 6 Enhanced Type-2 Codebook (enhanced dynamic codebook), the HARQ-ACK bit sequence corresponding to a certain PDSCH group includes HARQ-ACK for one or more SPS PDSCHs, or includes the HARQ-ACK at the end of the entire Codebook HARQ-ACK for one or more SPS PDSCH;
  • Case 7 Type-3 Codebook (One-shot feedback codebook), the HARQ-ACK of a certain or certain HARQ processes of a certain or certain configured carriers corresponds to the HARQ-ACK of the SPS PDSCH (can be understood as for this or For these HARQ processes, the UE judges that the most recent PDSCH reception is SPS PDSCH).
  • Type-3 Codebook One-shot feedback codebook
  • the UE first determines the bit sequence and the position of the HARQ-ACK bit of each SPS PDSCH in the bit sequence according to all SPS PDSCHs that need to feed back HARQ-ACK, and then removes the judgment that there is no need to feed back the corresponding HARQ-ACKs.
  • the HARQ-ACK bits corresponding to the SPS PDSCH, and the remaining bits are set as the HARQ-ACKs of the respective SPS PDSCHs and then sequentially concatenated into an updated HARQ-ACK bit sequence, which is used as the final transmitted HARQ-ACK Codebook (that is, the above-mentioned pending feedback HARQ-ACK codebook).
  • the codebook that is actually fed back is completely consistent with the existing specifications; if the UE judges that all SPS PDSCHs do not need to feed back the corresponding HARQ-ACK, the UE actually does not need to feed back the corresponding HARQ-ACK. Feedback any HARQ-ACK.
  • the UE if it does not consider whether to perform the judgment of not feeding back HARQ-ACK for a certain SPS PDSCH or some SPS PDSCH, it should feed back the SPS PDSCH transmission set ⁇ A,B,C,D,E,F ⁇ HARQ-ACK. According to the above operation, the UE judges that the SPS PDSCH transmission B, E, and F does not need to feed back HARQ-ACK, and finally only feeds back the HARQ-ACK for the SPS PDSCH transmission set ⁇ A, C, D ⁇ .
  • the UE first constructs a complete HARQ-ACK Codebook from the perspective of candidate PDSCH reception according to the specifications (that is, the above-mentioned preset specifications), and then does not need to feed back each SPS PDSCH corresponding to HARQ-ACK on each configured carrier, and dynamic scheduling
  • the specifications that is, the above-mentioned preset specifications
  • dynamic scheduling For the reception and/or detection of PDSCH and SPS PDSCH release, perform one of the following operations (note that compared to Case 1 or Case 4, in addition to the need to feed back HARQ-ACK for SPS PDSCH, at least one Dynamic scheduling of PDSCH or SPS PDSCH release feedback HARQ-ACK):
  • Option 1 Based on the complete Type-1 Codebook, the UE removes the HARQ-ACK bit corresponding to each SPS PDSCH that does not need to feed back the HARQ-ACK corresponding to the HARQ-ACK, and the remaining bits are set based on the specification (that is, the above-mentioned preset specification) After the value is taken, it is sequentially concatenated into an updated HARQ-ACK bit sequence, which is used as the final transmitted HARQ-ACK Codebook.
  • Option 2 Based on the complete Type-1 Codebook, the UE judges the SPS PDSCH that does not require HARQ-ACK feedback on each configured carrier, as well as other SPS PDSCH that needs to feedback HARQ-ACK, dynamic scheduling PDSCH, and SPS PDSCH release:
  • SPS PDSCH release the UE removes the bit sequence corresponding to this configuration carrier from the complete Type-1 Codebook; then the remaining bits of each configuration carrier are set based on the preset specifications and sequentially concatenated into an updated HARQ-ACK bit sequence , As the HARQ-ACK Codebook for the final transmission;
  • Option 2-1 The UE retains the complete bit sequence on the configured carrier, and sets the bit corresponding to the SPS PDSCH that judges that HARQ-ACK does not need to be fed back to NACK, and other bits are set according to the preset specifications; the UE will not remove the corresponding bit sequence afterwards
  • the bit sequence corresponding to the remaining configuration carriers of the, is sequentially concatenated into the updated HARQ-ACK bit sequence, which is used as the HARQ-ACK Codebook for the final transmission.
  • Option 2-2 The UE removes the HARQ-ACK bits corresponding to each SPS PDSCH corresponding to HARQ-ACK from the bit sequence corresponding to the configured carrier. The remaining bits are sequentially concatenated into this after setting values based on preset specifications.
  • the HARQ-ACK bit sequence after the configuration carrier is updated (the sequence length may be 0); then the UE cascades the bit sequence corresponding to each configuration carrier into the updated HARQ-ACK bit sequence, which is used as the HARQ-ACK Codebook for the final transmission .
  • the processing of the HARQ-ACK bit for SPS PDSCH at the end of the Type-2 Codebook can follow the corresponding processing of Case 1 and Case 4 above, that is, the removal judgment does not need to feed back each SPS PDSCH corresponding to HARQ-ACK.
  • the HARQ-ACK bit, the remaining bit sequence is concatenated and still attached after the HARQ-ACK bit sequence determined based on PDCCH detection or DAI count.
  • the HARQ-ACK bit sequence attached to the end of the HARQ-ACK bit sequence corresponding to a certain PDSCH group, or the processing of the HARQ-ACK bit for SPS PDSCH attached to the end of the entire Codebook can also follow the corresponding processing of the aforementioned cases 1 and 4, namely The removal judgment does not need to feed back the HARQ-ACK bit corresponding to each SPS PDSCH corresponding to HARQ-ACK, and the remaining bit sequence is concatenated and still attached to the end of the HARQ-ACK bit sequence corresponding to a certain PDSCH group, or to the end of the entire Codebook.
  • the UE can take one of the following operations:
  • Option A The UE determines the Codebook Size according to the specifications (that is, the above-mentioned preset specifications) without removing any bits; for the UE to determine that it does not need to feed back a certain SPS PDSCH corresponding to HARQ-ACK, the UE assumes when setting the HARQ-ACK information corresponding to the HARQ process This SPS PDSCH reception has not occurred, that is, based on this HARQ process the last actual reception or actual complete reception before this SPS PDSCH (it can be understood that if the aforementioned SPS PDSCH or dynamic scheduling PDSCH transmission is incomplete conditions are met, it is judged as incomplete) In the case of complete reception of the dynamic scheduling PDSCH or SPS PDSCH, the HARQ-ACK information of this HARQ process is set.
  • the UE judges that the most recent PDSCH reception is SPS PDSCH and this SPS PDSCH does not need to feed back the corresponding HARQ-ACK, and for Process_i the last actual received or actual complete received dynamic scheduling PDSCH before this SPS PDSCH Or SPS PDSCH is PDSCH_a
  • the UE sets the HARQ-ACK bit corresponding to Process_i in the Codebook to the decoding result and NDI corresponding to PDSCH_a; when the network is not configured to report NDI, if the UE has not reported PDSCH_a
  • the HARQ-ACK bit corresponding to Process_i in the Codebook is set to the HARQ-ACK information corresponding to PDSCH_a, otherwise it is set to NACK.
  • Option B The UE will remove all the HARQ-ACK information bits corresponding to the HARQ process corresponding to each SPS PDSCH corresponding to the HARQ-ACK from the Codebook determined according to the specification (that is, the above-mentioned preset specification), and remove all the remaining bits
  • the sequence is concatenated into an updated HARQ-ACK bit sequence as the final HARQ-ACK Codebook for transmission.
  • the PDSCH processing time capability supported by the UE can be considered, that is, the PDSCH transmission that meets the requirements of PDSCH processing time before the HARQ-ACK transmission time. Only as the above-mentioned recent PDSCH.
  • the UE For the UE to determine that a HARQ-ACK case is not fed back for a certain or certain SPS PDSCH (judging that the SPS PDSCH is not actually transmitted or the transmission is incomplete), the UE adopts any one of the following HARQ-ACK feedback for a kind of rule execution:
  • Rule 1 The UE can choose between not feeding back any Codebook or feeding back a complete Codebook as needed, that is, the UE is not allowed to feed back an incomplete Codebook; specifically:
  • HARQ-ACK means transmitting a complete HARQ-ACK codebook, and the HARQ-ACK bits corresponding to this or these SPS PDSCHs in the complete codebook are all set to NACK.
  • Rule 2 UE is allowed to feedback incomplete Codebooks as needed, that is, choose not to feedback any Codebook, feedback incomplete Codebook, or feedback complete Codebook; specifically:
  • the UE determines that there is no other valid HARQ-ACK to be fed back except for the HARQ-ACK corresponding to the SPS PDSCH that does not need to feed back the HARQ-ACK, the UE does not feed back any HARQ-ACK; when the UE has other valid HARQ-ACKs that need to be fed back , The UE removes the HARQ-ACK bits for this or these SPS PDSCHs in the codebook that is finally fed back, and can further delete related bits as needed.
  • the solution provided by the embodiment of the present invention for the scenario where the base station skips certain SPS PDSCH transmission opportunities, SPS PDSCH transmission or SPS PDSCH partial transmission, a HARQ-ACK feedback solution that saves HARQ-ACK feedback bits is introduced, which improves HARQ-ACK feedback efficiency.
  • an embodiment of the present invention provides a terminal 400, including:
  • the first determining module 401 is configured to determine the first semi-persistent scheduling physical downlink shared channel SPS PDSCH, where the first SPS PDSCH does not need to feed back a hybrid automatic repeat request response HARQ-ACK;
  • the second determining module 402 is configured to determine the HARQ-ACK feedback behavior according to the preset rule and the first SPS PDSCH.
  • the preset rule includes at least one of the following rules:
  • Rule 1 In the case that no other HARQ-ACK needs to be fed back except for the HARQ-ACK corresponding to the first SPS PDSCH, the HARQ-ACK codebook is not fed back; otherwise, the first HARQ-ACK codebook is fed back.
  • the first HARQ-ACK codebook is a complete codebook
  • Rule 2 In the case that no other HARQ-ACK needs to be fed back except for the HARQ-ACK corresponding to the first SPS PDSCH, the HARQ-ACK codebook is not fed back; otherwise, if the first condition is met, the first HARQ-ACK is fed back. A HARQ-ACK codebook; if the second condition is met, the second HARQ-ACK codebook is fed back, and the second HARQ-ACK codebook is an incomplete codebook;
  • other HARQ-ACK includes: other SPS PDSCH, dynamically scheduled PDSCH and/or SPS PDSCH release corresponding HARQ-ACK.
  • the condition that no other HARQ-ACK needs to be fed back includes: no other HARQ-ACK needs to be fed back in the PUCCH transmission timing of the first physical uplink control channel, where the first PUCCH transmission timing includes: The HARQ-ACK feedback of the first SPS PDSCH corresponds to the PUCCH transmission timing.
  • the HARQ-ACK bit corresponding to the first SPS PDSCH is set as a negative response NACK.
  • the second HARQ-ACK codebook is fed back under the second condition, including: according to all SPS PDSCHs, HARQ-ACK needs to be fed back, determining the bit sequence and the HARQ-ACK bits of each SPS PDSCH The position in the bit sequence; the HARQ-ACK bit corresponding to the first SPS PDSCH is removed from the determined bit sequence, and the remaining bit sequence is concatenated to generate the second HARQ-ACK codebook, and the remaining bits are set to each The HARQ-ACK of the corresponding SPS PDSCH; wherein, the second condition includes at least the following condition: the HARQ-ACK codebook is a semi-static codebook and only includes HARQ-ACK for at least one SPS PDSCH.
  • the feeding back the first HARQ-ACK codebook when the first condition is satisfied, or the feeding back the second HARQ-ACK codebook when the second condition is satisfied includes: according to each Configure the first SPS PDSCH on the carrier, other SPS PDSCHs that need to feed back HARQ-ACK, and dynamically schedule the reception and/or detection of PDSCH and SPS PDSCH release, and perform the first for the constructed complete HARQ-ACK codebook
  • the preset operation obtains the first HARQ-ACK codebook or the second HARQ-ACK codebook; wherein, the first condition and/or the second condition include at least the following conditions: the HARQ-ACK codebook It is a semi-static codebook, and one or more candidate PDSCHs receive the corresponding SPS PDSCH.
  • the first preset operation includes at least one of the following operations: Operation 1: Based on the constructed complete HARQ-ACK codebook, remove the first SPS PDSCH corresponding to each configured carrier The second HARQ-ACK codebook is generated by concatenating the remaining bits in sequence, and the remaining bits are set to values according to preset specifications; operation 2: on the basis of the constructed complete HARQ-ACK codebook, According to the first SPS PDSCH on each configured carrier, and other SPS PDSCHs that require HARQ-ACK feedback, dynamically scheduled PDSCH and SPS PDSCH release conditions, perform the second preset operation to generate the first HARQ-ACK codebook Or the second HARQ-ACK codebook.
  • the second preset operation includes: performing at least one of the following operations for each configured carrier; then sequentially cascading the remaining bit sequences of each configured carrier to generate the first HARQ-ACK codebook Or the second HARQ-ACK codebook; the operation includes: in the case that the configured carrier satisfies a preset condition, removing bits corresponding to the configured carrier from the constructed complete HARQ-ACK codebook sequence;
  • the complete HARQ-ACK bit sequence corresponding to the configured carrier is reserved, and the bit corresponding to the first SPS PDSCH on the configured carrier is set to NACK, and the other bits Set according to the preset specification; or, remove the HARQ-ACK bit corresponding to the first SPS PDSCH on the configured carrier from the complete HARQ-ACK bit sequence corresponding to the configured carrier, and the remaining bits are based on the Preset specification setting values;
  • the preset condition means that apart from the first SPS PDSCH on the configured carrier, there is no other SPS PDSCH that needs to feed back HARQ-ACK, dynamic scheduling PDSCH, and SPS PDSCH release.
  • the second HARQ-ACK codebook is fed back under the second condition, including: according to all SPS PDSCHs, HARQ-ACK needs to be fed back, determining the bit sequence and the HARQ-ACK bits of each SPS PDSCH The position in the bit sequence; remove the HARQ-ACK bit corresponding to the first SPS PDSCH from the determined bit sequence, concatenate the remaining bit sequence, and place it after the first target HARQ-ACK bit sequence to obtain the The second HARQ-ACK codebook; wherein the first target HARQ-ACK bit sequence is determined based on physical uplink control channel PDCCH detection or downlink allocation index DAI count, and the remaining bits are set to the corresponding SPS PDSCH HARQ-ACK; wherein, the second condition includes at least the following conditions: the HARQ-ACK codebook is a dynamic codebook, and the codebook tail includes HARQ-ACK for at least one SPS PDSCH.
  • the second HARQ-ACK codebook is fed back under the second condition, including: according to all SPS PDSCHs, HARQ-ACK needs to be fed back, determining the bit sequence and the HARQ-ACK bits of each SPS PDSCH The position in the bit sequence; the HARQ-ACK bit corresponding to the first SPS PDSCH is removed from the determined bit sequence, and the remaining bits are concatenated in sequence and placed in the HARQ-ACK corresponding to the preset physical uplink shared channel group PDSCH group The end of the bit sequence, or the end of the entire codebook, to obtain the second HARQ-ACK codebook; wherein the remaining bits are set to the HARQ-ACK of the respective SPS PDSCH; wherein, the second condition is at least It includes the following conditions: the HARQ-ACK codebook is an enhanced dynamic codebook, and the HARQ-ACK bit sequence corresponding to the preset PDSCH group includes HARQ-ACK for at least one SPS PDSCH, or the
  • the feeding back the first HARQ-ACK codebook when the first condition is satisfied includes: adopting the following operation to determine the first HARQ-ACK codebook: the operation includes: Suppose that the codebook size is determined by the specification and no bit removal is performed to obtain the first HARQ-ACK codebook; wherein, based on the situation of the first PDSCH, the HARQ-ACK information of the first HARQ process is set; the first HARQ process and the first HARQ process One SPS PDSCH correspondence; wherein, the first condition includes at least the following conditions: the HARQ-ACK codebook is a one-shot feedback codebook, and at least one HARQ process of at least one configured carrier corresponds to the SPS PDSCH; The first PDSCH is a dynamically scheduled PDSCH or SPS PDSCH that was actually received or actually completely received last time before the first SPS PDSCH by the first HARQ process.
  • the last dynamically scheduled PDSCH or SPS PDSCH actually received or actually completely received is determined according to the physical uplink shared channel processing time PDSCH processing time capability supported by the terminal.
  • feeding back the second HARQ-ACK codebook when the second condition is met includes: adopting the following operation to determine the second HARQ-ACK codebook: the operation includes: determining according to a preset specification In the codebook of the second HARQ process, all the HARQ-ACK information bits corresponding to the second HARQ process are removed, and the remaining bit sequence is concatenated to generate the second HARQ-ACK codebook; wherein, the second HARQ process is the first The HARQ process corresponding to an SPS PDSCH; the remaining bits are set according to a preset specification; wherein, the second condition includes at least the following condition: the HARQ-ACK codebook is a one-shot one-shot feedback codebook, at least At least one HARQ process of a configured carrier corresponds to the SPS PDSCH.
  • the first determining module includes: a first determining submodule, configured to determine that the SPS PDSCH is the first SPS PDSCH when it is detected that the SPS PDSCH is not actually transmitted.
  • the first determining module includes: a second determining sub-module, which is used to determine that the SPS PDSCH is the first SPS when repeated transmission of the SPS PDSCH is configured and the SPS PDSCH transmission is detected to be incomplete PDSCH.
  • the incomplete transmission of the SPS PDSCH includes at least one of the following situations: the number of PDSCHs actually transmitted by the SPS PDSCH is less than the configured or predefined number of repeated transmissions, or the number of PDSCHs actually transmitted is less than the configured or predefined number of repeated transmissions.
  • the preset ratio of the number of repeated transmissions; and, the PDSCH actually transmitted by the SPS PDSCH does not cover the preset redundancy version or does not cover all the redundancy versions in the preset redundancy version set; wherein, the preset ratio is determined by the agreement Provision or high-level configuration; the preset redundancy version is defined by the protocol or configured by the high-level; the set of preset redundancy versions is defined by the protocol or configured by the high-level.
  • the terminal determines the first semi-persistent scheduling physical downlink shared channel SPS PDSCH, where the first SPS PDSCH does not need to feed back the HARQ-ACK of the hybrid automatic repeat request response; according to preset rules and In the first SPS PDSCH, the HARQ-ACK feedback behavior is determined; it can realize the scenario of SPS PDSCH transmission or SPS PDSCH partial transmission where the base station skips certain SPS PDSCH transmission opportunities, and introduces a HARQ-ACK feedback scheme that saves HARQ-ACK feedback bits , Improve the HARQ-ACK feedback efficiency; it is a good solution to the existing SPS PDSCH transmission or SPS PDSCH partial transmission scenarios where the base station skips certain SPS PDSCH transmission opportunities, and the problem of low efficiency of the UE feedback HARQ-ACK.
  • this terminal embodiment is a terminal corresponding to the above-mentioned hybrid automatic repeat request response feedback method applied to the terminal. All the implementation modes of the above-mentioned embodiment are applicable to this terminal embodiment, and can also achieve the same. Technical effect.
  • Fig. 5 is a schematic diagram of the hardware structure of a terminal for implementing an embodiment of the present invention.
  • the terminal 50 includes but is not limited to: a radio frequency unit 510, a network module 520, an audio output unit 530, an input unit 540, a sensor 550, a display unit 560, a user input unit 570, an interface unit 580, a memory 590, a processor 511, and a power supply 512 and other parts.
  • a radio frequency unit 510 includes but is not limited to: a radio frequency unit 510, a network module 520, an audio output unit 530, an input unit 540, a sensor 550, a display unit 560, a user input unit 570, an interface unit 580, a memory 590, a processor 511, and a power supply 512 and other parts.
  • the terminal structure shown in FIG. 5 does not constitute a limitation on the terminal, and the terminal may include more or fewer components than shown in the figure, or combine certain components, or arrange different components.
  • the terminal includes, but is not limited to, a mobile phone, a tablet computer, a notebook computer
  • the processor 511 is configured to determine the first semi-persistent scheduling physical downlink shared channel SPS PDSCH, where the first SPS PDSCH does not need to feed back a hybrid automatic repeat request response HARQ-ACK; according to preset rules and the first SPS PDSCH, determine the HARQ-ACK feedback behavior.
  • the terminal in the embodiment of the present invention determines the first semi-persistent scheduling physical downlink shared channel SPS PDSCH, where the first SPS PDSCH does not need to feed back the hybrid automatic repeat request response HARQ-ACK; according to preset rules and the first SPS PDSCH, determine the HARQ-ACK feedback behavior; for scenarios where the base station skips certain SPS PDSCH transmission opportunities, SPS PDSCH transmission or SPS PDSCH partial transmission, the HARQ-ACK feedback scheme that saves HARQ-ACK feedback bits is introduced to improve HARQ -ACK feedback efficiency; it is a good solution to the existing scenario where the base station skips certain SPS PDSCH transmission opportunities or SPS PDSCH partial transmission, and the UE feedbacks the problem of low efficiency of HARQ-ACK.
  • the radio frequency unit 510 can be used for receiving and sending signals in the process of sending and receiving information or talking. Specifically, after receiving downlink data from a network node, it is processed by the processor 511; in addition, Send the uplink data to the network node.
  • the radio frequency unit 510 includes, but is not limited to, an antenna, at least one amplifier, a transceiver, a coupler, a low noise amplifier, a duplexer, and the like.
  • the radio frequency unit 510 can also communicate with the network and other devices through a wireless communication system.
  • the terminal provides users with wireless broadband Internet access through the network module 520, such as helping users to send and receive emails, browse web pages, and access streaming media.
  • the audio output unit 530 may convert the audio data received by the radio frequency unit 510 or the network module 520 or stored in the memory 590 into an audio signal and output it as sound. Moreover, the audio output unit 530 may also provide audio output related to a specific function performed by the terminal 50 (for example, call signal reception sound, message reception sound, etc.).
  • the audio output unit 530 includes a speaker, a buzzer, a receiver, and the like.
  • the input unit 540 is used to receive audio or video signals.
  • the input unit 540 may include a graphics processing unit (GPU) 541 and a microphone 542, and the graphics processor 541 is configured to respond to still pictures or video images obtained by an image capture device (such as a camera) in a video capture mode or an image capture mode. Data is processed.
  • the processed image frame may be displayed on the display unit 560.
  • the image frame processed by the graphics processor 541 can be stored in the memory 590 (or other storage medium) or sent via the radio frequency unit 510 or the network module 520.
  • the microphone 542 can receive sound, and can process such sound into audio data.
  • the processed audio data can be converted into a format that can be sent to the mobile communication network node via the radio frequency unit 510 for output in the case of a telephone call mode.
  • the terminal 50 also includes at least one sensor 550, such as a light sensor, a motion sensor, and other sensors.
  • the light sensor includes an ambient light sensor and a proximity sensor.
  • the ambient light sensor can adjust the brightness of the display panel 561 according to the brightness of the ambient light.
  • the proximity sensor can close the display panel 561 and/or when the terminal 50 is moved to the ear. Or backlight.
  • the accelerometer sensor can detect the magnitude of acceleration in various directions (usually three-axis), and can detect the magnitude and direction of gravity when stationary, and can be used to identify terminal gestures (such as horizontal and vertical screen switching, related games, Magnetometer posture calibration), vibration recognition related functions (such as pedometer, percussion), etc.; sensor 550 can also include fingerprint sensors, pressure sensors, iris sensors, molecular sensors, gyroscopes, barometers, hygrometers, thermometers, infrared Sensors, etc., will not be repeated here.
  • the display unit 560 is used to display information input by the user or information provided to the user.
  • the display unit 560 may include a display panel 561, and the display panel 561 may be configured in the form of a liquid crystal display (LCD), an organic light-emitting diode (OLED), etc.
  • LCD liquid crystal display
  • OLED organic light-emitting diode
  • the user input unit 570 can be used to receive input numeric or character information, and generate key signal inputs related to user settings and function control of the terminal.
  • the user input unit 570 includes a touch panel 571 and other input devices 572.
  • the touch panel 571 also called a touch screen, can collect the user's touch operations on or near it (for example, the user uses any suitable objects or accessories such as fingers, stylus, etc.) on the touch panel 571 or near the touch panel 571. operate).
  • the touch panel 571 may include two parts, a touch detection device and a touch controller.
  • the touch detection device detects the user's touch position, and detects the signal brought by the touch operation, and transmits the signal to the touch controller; the touch controller receives the touch information from the touch detection device, converts it into contact coordinates, and then sends it To the processor 511, the command sent by the processor 511 is received and executed.
  • the touch panel 571 can be implemented in multiple types such as resistive, capacitive, infrared, and surface acoustic wave.
  • the user input unit 570 may also include other input devices 572.
  • other input devices 572 may include, but are not limited to, a physical keyboard, function keys (such as volume control buttons, switch buttons, etc.), trackball, mouse, and joystick, which will not be repeated here.
  • the touch panel 571 can cover the display panel 561.
  • the touch panel 571 detects a touch operation on or near it, it transmits it to the processor 511 to determine the type of touch event, and then the processor 511 determines the type of the touch event according to the touch The type of event provides corresponding visual output on the display panel 561.
  • the touch panel 571 and the display panel 561 are used as two independent components to implement the input and output functions of the terminal, in some embodiments, the touch panel 571 and the display panel 561 can be integrated Realize the input and output functions of the terminal, the specifics are not limited here.
  • the interface unit 580 is an interface for connecting an external device and the terminal 50.
  • the external device may include a wired or wireless headset port, an external power source (or battery charger) port, a wired or wireless data port, a memory card port, a port for connecting a device with an identification module, audio input/output (I/O) port, video I/O port, headphone port, etc.
  • the interface unit 580 may be used to receive input (for example, data information, power, etc.) from an external device and transmit the received input to one or more elements in the terminal 50 or may be used to communicate between the terminal 50 and the external device. Transfer data between.
  • the memory 590 can be used to store software programs and various data.
  • the memory 590 may mainly include a program storage area and a data storage area.
  • the program storage area may store an operating system, an application program required by at least one function (such as a sound playback function, an image playback function, etc.), etc.; Data created by the use of mobile phones (such as audio data, phone book, etc.), etc.
  • the memory 590 may include a high-speed random access memory, and may also include a non-volatile memory, such as at least one magnetic disk storage device, a flash memory device, or other volatile solid-state storage devices.
  • the processor 511 is the control center of the terminal. It uses various interfaces and lines to connect various parts of the entire terminal. Various functions of the terminal and processing data, so as to monitor the terminal as a whole.
  • the processor 511 may include one or more processing units; preferably, the processor 511 may integrate an application processor and a modem processor, where the application processor mainly processes the operating system, user interface and application programs, etc., the modem
  • the processor mainly deals with wireless communication. It can be understood that the foregoing modem processor may not be integrated into the processor 511.
  • the terminal 50 may also include a power source 512 (such as a battery) for supplying power to various components.
  • a power source 512 such as a battery
  • the power source 512 may be logically connected to the processor 511 through a power management system, so as to manage charging, discharging, and power consumption management through the power management system. Function.
  • the terminal 50 includes some functional modules not shown, which will not be repeated here.
  • the embodiment of the present invention also provides a terminal, including a processor 511, a memory 590, a computer program stored on the memory 590 and running on the processor 511, and the computer program is implemented when the processor 511 is executed. It is applied to the various processes of the embodiment of the hybrid automatic repeat request response feedback method on the terminal side, and can achieve the same technical effect. In order to avoid repetition, it will not be repeated here.
  • the embodiment of the present invention also provides a computer-readable storage medium, and a computer program is stored on the computer-readable storage medium.
  • a computer program is stored on the computer-readable storage medium.
  • the computer-readable storage medium such as read-only memory (Read-Only Memory, ROM for short), random access memory (Random Access Memory, RAM for short), magnetic disk, or optical disk, etc.
  • an embodiment of the present invention provides a network node 600, including:
  • the third determining module 601 is configured to determine the first semi-persistent scheduling physical downlink shared channel SPS PDSCH, where the first SPS PDSCH does not need to feed back a hybrid automatic repeat request response HARQ-ACK;
  • the first judgment module 602 is configured to judge the HARQ-ACK feedback behavior of the terminal according to the preset rule adopted by the terminal and the first SPS PDSCH.
  • the preset rule includes at least one of the following rules:
  • Rule 1 In the case that no other HARQ-ACK needs to be fed back except for the HARQ-ACK corresponding to the first SPS PDSCH, the HARQ-ACK codebook is not fed back; otherwise, the first HARQ-ACK codebook is fed back.
  • the first HARQ-ACK codebook is a complete codebook
  • Rule 2 In the case that no other HARQ-ACK needs to be fed back except for the HARQ-ACK corresponding to the first SPS PDSCH, the HARQ-ACK codebook is not fed back; otherwise, if the first condition is met, the first HARQ-ACK is fed back. A HARQ-ACK codebook; if the second condition is met, the second HARQ-ACK codebook is fed back, and the second HARQ-ACK codebook is an incomplete codebook;
  • other HARQ-ACK includes: other SPS PDSCH, dynamically scheduled PDSCH and/or SPS PDSCH release corresponding HARQ-ACK.
  • the condition that no other HARQ-ACK needs to be fed back includes: no other HARQ-ACK needs to be fed back in the PUCCH transmission timing of the first physical uplink control channel, where the first PUCCH transmission timing includes: The HARQ-ACK feedback of the first SPS PDSCH corresponds to the PUCCH transmission timing.
  • the HARQ-ACK bit corresponding to the first SPS PDSCH is set as a negative response NACK.
  • the second HARQ-ACK codebook is fed back under the second condition, including: according to all SPS PDSCHs, HARQ-ACK needs to be fed back, determining the bit sequence and the HARQ-ACK bits of each SPS PDSCH The position in the bit sequence; the HARQ-ACK bit corresponding to the first SPS PDSCH is removed from the determined bit sequence, and the remaining bit sequence is concatenated to generate the second HARQ-ACK codebook, and the remaining bits are set to each The HARQ-ACK of the corresponding SPS PDSCH; wherein, the second condition includes at least the following condition: the HARQ-ACK codebook is a semi-static codebook and only includes HARQ-ACK for at least one SPS PDSCH.
  • the feeding back the first HARQ-ACK codebook when the first condition is satisfied, or the feeding back the second HARQ-ACK codebook when the second condition is satisfied includes: according to each Configure the first SPS PDSCH on the carrier, other SPS PDSCHs that need to feed back HARQ-ACK, and dynamically schedule the reception and/or detection of PDSCH and SPS PDSCH release, and perform the first for the constructed complete HARQ-ACK codebook
  • the preset operation obtains the first HARQ-ACK codebook or the second HARQ-ACK codebook; wherein, the first condition and/or the second condition include at least the following conditions: the HARQ-ACK codebook It is a semi-static codebook, and one or more candidate PDSCHs receive the corresponding SPS PDSCH.
  • the first preset operation includes at least one of the following operations: Operation 1: Based on the constructed complete HARQ-ACK codebook, remove the first SPS PDSCH corresponding to each configured carrier The second HARQ-ACK codebook is generated by concatenating the remaining bits in sequence, and the remaining bits are set to values according to preset specifications; operation 2: on the basis of the constructed complete HARQ-ACK codebook, According to the first SPS PDSCH on each configured carrier, and other SPS PDSCHs that require HARQ-ACK feedback, dynamically scheduled PDSCH and SPS PDSCH release conditions, perform the second preset operation to generate the first HARQ-ACK codebook Or the second HARQ-ACK codebook.
  • the second preset operation includes: performing at least one of the following operations for each configured carrier; then sequentially cascading the remaining bit sequences of each configured carrier to generate the first HARQ-ACK codebook Or the second HARQ-ACK codebook; the operation includes: in the case that the configured carrier satisfies a preset condition, removing bits corresponding to the configured carrier from the constructed complete HARQ-ACK codebook sequence;
  • the complete HARQ-ACK bit sequence corresponding to the configured carrier is reserved, and the bit corresponding to the first SPS PDSCH on the configured carrier is set to NACK, and the other bits Set according to the preset specification; or, remove the HARQ-ACK bit corresponding to the first SPS PDSCH on the configured carrier from the complete HARQ-ACK bit sequence corresponding to the configured carrier, and the remaining bits are based on the The preset specification setting value; wherein, the preset condition refers to that except for the first SPS PDSCH on the configured carrier, there is no other SPS PDSCH that needs to feed back HARQ-ACK, dynamic scheduling PDSCH and SPS PDSCH release.
  • the second HARQ-ACK codebook is fed back under the second condition, including: according to all SPS PDSCHs, HARQ-ACK needs to be fed back, determining the bit sequence and the HARQ-ACK bits of each SPS PDSCH The position in the bit sequence; remove the HARQ-ACK bit corresponding to the first SPS PDSCH from the determined bit sequence, concatenate the remaining bit sequence, and place it after the first target HARQ-ACK bit sequence to obtain the The second HARQ-ACK codebook; wherein the first target HARQ-ACK bit sequence is determined based on physical uplink control channel PDCCH detection or downlink allocation index DAI count, and the remaining bits are set to the corresponding SPS PDSCH HARQ-ACK; wherein, the second condition includes at least the following conditions: the HARQ-ACK codebook is a dynamic codebook, and the codebook tail includes HARQ-ACK for at least one SPS PDSCH.
  • the second HARQ-ACK codebook is fed back under the second condition, including: according to all SPS PDSCHs, HARQ-ACK needs to be fed back, determining the bit sequence and the HARQ-ACK bits of each SPS PDSCH The position in the bit sequence; the HARQ-ACK bit corresponding to the first SPS PDSCH is removed from the determined bit sequence, and the remaining bits are concatenated in sequence and placed in the HARQ-ACK corresponding to the preset physical uplink shared channel group PDSCH group The end of the bit sequence, or the end of the entire codebook, to obtain the second HARQ-ACK codebook; wherein the remaining bits are set to the HARQ-ACK of the respective SPS PDSCH; wherein, the second condition is at least It includes the following conditions: the HARQ-ACK codebook is an enhanced dynamic codebook, and the HARQ-ACK bit sequence corresponding to the preset PDSCH group includes HARQ-ACK for at least one SPS PDSCH, or the
  • the feeding back the first HARQ-ACK codebook when the first condition is satisfied includes: adopting the following operation to determine the first HARQ-ACK codebook: the operation includes: Suppose that the codebook size is determined by the specification and no bit removal is performed to obtain the first HARQ-ACK codebook; wherein, based on the situation of the first PDSCH, the HARQ-ACK information of the first HARQ process is set; the first HARQ process and the first HARQ process One SPS PDSCH correspondence; wherein, the first condition includes at least the following conditions: the HARQ-ACK codebook is a one-shot feedback codebook, and at least one HARQ process of at least one configured carrier corresponds to the SPS PDSCH; The first PDSCH is a dynamically scheduled PDSCH or SPS PDSCH that was actually received or actually completely received last time before the first SPS PDSCH by the first HARQ process.
  • the last dynamically scheduled PDSCH or SPS PDSCH actually received or actually completely received is determined according to the physical uplink shared channel processing time PDSCH processing time capability supported by the terminal.
  • feeding back the second HARQ-ACK codebook when the second condition is met includes: adopting the following operation to determine the second HARQ-ACK codebook: the operation includes: determining according to a preset specification In the codebook of the second HARQ process, all the HARQ-ACK information bits corresponding to the second HARQ process are removed, and the remaining bit sequence is concatenated to generate the second HARQ-ACK codebook; wherein, the second HARQ process is the first The HARQ process corresponding to an SPS PDSCH; the remaining bits are set according to a preset specification; wherein, the second condition includes at least the following condition: the HARQ-ACK codebook is a one-shot one-shot feedback codebook, at least At least one HARQ process of a configured carrier corresponds to the SPS PDSCH.
  • the third determining module includes: a third determining submodule, configured to determine that the SPS PDSCH is the first SPS PDSCH when it is detected that the SPS PDSCH is not actually transmitted.
  • the third determining module includes: a fourth determining sub-module, which is used to determine that the SPS PDSCH is the first SPS when repeated transmission of the SPS PDSCH is configured and the SPS PDSCH transmission is incomplete. PDSCH.
  • the incomplete transmission of the SPS PDSCH includes at least one of the following situations: the number of PDSCHs actually transmitted by the SPS PDSCH is less than the configured or predefined number of repeated transmissions, or the number of PDSCHs actually transmitted is less than the configured or predefined number of repeated transmissions.
  • the preset ratio of the number of repeated transmissions; and, the PDSCH actually transmitted by the SPS PDSCH does not cover the preset redundancy version or does not cover all the redundancy versions in the preset redundancy version set; wherein, the preset ratio is determined by the agreement Provision or high-level configuration; the preset redundancy version is defined by the protocol or configured by the high-level; the set of preset redundancy versions is defined by the protocol or configured by the high-level.
  • the network node determines the first semi-persistent scheduling physical downlink shared channel SPS PDSCH, where the first SPS PDSCH does not need to feed back the hybrid automatic repeat request response HARQ-ACK; according to the terminal used
  • the preset rule and the first SPS PDSCH are used to determine the HARQ-ACK feedback behavior of the terminal; it is possible to realize the scenario of SPS PDSCH transmission or SPS PDSCH partial transmission where the base station skips certain SPS PDSCH transmission opportunities, and the introduction of HARQ-saving
  • the HARQ-ACK feedback scheme with ACK feedback bits improves the efficiency of HARQ-ACK feedback; it solves the existing scenarios of SPS PDSCH transmission or SPS PDSCH partial transmission where the base station skips certain SPS PDSCH transmission opportunities, and the UE feeds back HARQ -The problem of low efficiency of ACK.
  • this embodiment of the network node is a network node corresponding to the aforementioned hybrid automatic repeat request response feedback method applied to the network node, and all the implementation modes of the aforementioned embodiment are applicable to this embodiment of the network node. It can achieve the same technical effect.
  • FIG. 7 is a structural diagram of a network node according to an embodiment of the present invention, which can realize the details of the above-mentioned beam reporting method and achieve the same effect.
  • the network node 700 includes: a processor 701, a transceiver 702, a memory 703, and a bus interface, where:
  • the processor 701 is configured to determine the first semi-persistent scheduling physical downlink shared channel SPS PDSCH, where the first SPS PDSCH does not need to feed back a hybrid automatic repeat request response HARQ-ACK;
  • the HARQ-ACK feedback behavior of the terminal is determined.
  • the network node determines the first semi-persistent scheduling physical downlink shared channel SPS PDSCH, where the first SPS PDSCH does not need to feed back the hybrid automatic repeat request response HARQ-ACK; according to the terminal used
  • the preset rule and the first SPS PDSCH are used to determine the HARQ-ACK feedback behavior of the terminal; it is possible to realize the scenario of SPS PDSCH transmission or SPS PDSCH partial transmission where the base station skips certain SPS PDSCH transmission opportunities, and the introduction of HARQ-saving
  • the HARQ-ACK feedback scheme of ACK feedback bits improves the efficiency of HARQ-ACK feedback; it solves the existing scenarios of SPS PDSCH transmission or SPS PDSCH partial transmission where the base station skips certain SPS PDSCH transmission opportunities, and the UE feeds back HARQ -The problem of low efficiency of ACK.
  • the bus architecture may include any number of interconnected buses and bridges. Specifically, one or more processors represented by the processor 701 and various circuits of the memory represented by the memory 703 are linked together.
  • the bus architecture can also link various other circuits such as peripheral devices, voltage regulators, power management circuits, etc., which are all known in the art, and therefore, will not be further described herein.
  • the bus interface provides the interface.
  • the transceiver 702 may be a plurality of elements, including a transmitter and a receiver, and provide a unit for communicating with various other devices on a transmission medium.
  • the embodiment of the present invention also provides a network node, including a processor, a memory, and a computer program stored in the memory and running on the processor.
  • the computer program is applied to the network node when the computer program is executed by the processor.
  • Each process of the embodiment of the hybrid automatic repeat request response feedback method on the side can achieve the same technical effect. In order to avoid repetition, details are not repeated here.
  • the embodiment of the present invention also provides a computer-readable storage medium, and a computer program is stored on the computer-readable storage medium, and when the computer program is executed by a processor, an embodiment of a method for implementing hybrid automatic repeat request response feedback applied to the network node side
  • a computer-readable storage medium such as read-only memory (Read-Only Memory, ROM for short), random access memory (Random Access Memory, RAM for short), magnetic disk, or optical disk, etc.
  • the network node can be a base station (Base Transceiver Station, referred to as BTS) in Global System of Mobile Communications (GSM) or Code Division Multiple Access (Code Division Multiple Access, referred to as CDMA), or it can be a broadband code
  • BTS Base Transceiver Station
  • GSM Global System of Mobile Communications
  • CDMA Code Division Multiple Access
  • the base station (NodeB, NB) in Wideband Code Division Multiple Access (WCDMA) may also be the Evolutional NodeB (eNB or eNodeB) in LTE, or a relay station or an access point.
  • eNB or eNodeB Evolutional NodeB
  • 5G or future networks, etc. are not limited here.
  • the technical solution of the present invention essentially or the part that contributes to the existing technology can be embodied in the form of a software product, and the computer software product is stored in a storage medium (such as ROM/RAM, magnetic disk, The optical disc) includes a number of instructions to enable an electronic device (which can be a mobile phone, a computer, a server, an air conditioner, or a network device, etc.) to execute the method described in each embodiment of the present invention.

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)
  • Detection And Prevention Of Errors In Transmission (AREA)

Abstract

La présente invention a trait au domaine technique des communications et concerne un procédé de rétroaction d'accusé de réception de demande de répétition automatique hybride (HARQ-ACK), ainsi qu'un terminal et un noeud de réseau. Le procédé de rétroaction HARQ-ACK selon l'invention est appliqué au terminal et consiste : à déterminer un premier canal partagé de liaison descendante physique à planification semi-persistante (PDSCH SPS), le premier PDSCH SPS n'ayant pas besoin de renvoyer un HARQ-ACK ; et à déterminer un comportement de rétroaction HARQ-ACK selon une règle prédéfinie et le premier PDSCH SPS.
PCT/CN2021/083914 2020-04-01 2021-03-30 Procédé de rétroaction de demande de répétition automatique hybride (harq), terminal et noeud de réseau associés WO2021197317A1 (fr)

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CN116155468A (zh) * 2020-04-20 2023-05-23 大唐移动通信设备有限公司 一种码本反馈处理方法、设备、装置及介质
CN116094658A (zh) * 2021-11-05 2023-05-09 维沃移动通信有限公司 Harq-ack反馈的处理方法、装置及设备
CN117176306A (zh) * 2022-05-23 2023-12-05 中国移动通信有限公司研究院 候选pdsch接收时机确定方法、装置及相关设备

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