WO2021189277A1 - Améliorations d'un renvoi de harq-ack en une fois - Google Patents

Améliorations d'un renvoi de harq-ack en une fois Download PDF

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Publication number
WO2021189277A1
WO2021189277A1 PCT/CN2020/081017 CN2020081017W WO2021189277A1 WO 2021189277 A1 WO2021189277 A1 WO 2021189277A1 CN 2020081017 W CN2020081017 W CN 2020081017W WO 2021189277 A1 WO2021189277 A1 WO 2021189277A1
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WIPO (PCT)
Prior art keywords
harq
dci format
harq process
shot
ack feedback
Prior art date
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PCT/CN2020/081017
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English (en)
Inventor
Mostafa KHOSHNEVISAN
Xiaoxia Zhang
Aleksandar Damnjanovic
Jing Sun
Andrei Dragos Radulescu
Juan Montojo
Wei Yang
Tao Luo
Changlong Xu
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Qualcomm Incorporated
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Priority to PCT/CN2020/081017 priority Critical patent/WO2021189277A1/fr
Publication of WO2021189277A1 publication Critical patent/WO2021189277A1/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
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1864—ARQ related signaling
    • 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
    • H04L1/1822—Automatic repetition systems, e.g. Van Duuren systems involving configuration of automatic repeat request [ARQ] with parallel processes
    • 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
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1854—Scheduling and prioritising arrangements

Definitions

  • aspects of the present disclosure generally relate to wireless communication and to techniques and apparatuses for on-shot hybrid automatic repeat request acknowledgment (HARQ-ACK) enhancements.
  • HARQ-ACK hybrid automatic repeat request acknowledgment
  • Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts.
  • Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, and/or the like) .
  • multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency-division multiple access (FDMA) systems, orthogonal frequency-division multiple access (OFDMA) systems, single-carrier frequency-division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and Long Term Evolution (LTE) .
  • LTE/LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP) .
  • UMTS Universal Mobile Telecommunications System
  • a wireless communication network may include a number of base stations (BSs) that can support communication for a number of user equipment (UEs) .
  • a user equipment (UE) may communicate with a base station (BS) via the downlink and uplink.
  • the downlink (or forward link) refers to the communication link from the BS to the UE
  • the uplink (or reverse link) refers to the communication link from the UE to the BS.
  • a BS may be referred to as a Node B, a gNB, an access point (AP) , a radio head, a transmit receive point (TRP) , a New Radio (NR) BS, a 5G Node B, and/or the like.
  • New Radio which may also be referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by the Third Generation Partnership Project (3GPP) .
  • 3GPP Third Generation Partnership Project
  • NR is designed to better support mobile broadband Internet access by improving spectral efficiency, lowering costs, improving services, making use of new spectrum, and better integrating with other open standards using orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on the downlink (DL) , using CP-OFDM and/or SC-FDM (e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM) ) on the uplink (UL) , as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation.
  • OFDM orthogonal frequency division multiplexing
  • SC-FDM e.g., also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)
  • DFT-s-OFDM discrete Fourier transform spread OFDM
  • MIMO multiple-input multiple-output
  • a method of wireless communication may include receiving a radio resource control (RRC) configuration of a first set of hybrid automatic repeat request (HARQ) process identifiers (IDs) and an RRC configuration of a particular downlink control information (DCI) format that includes a HARQ process ID field, wherein the RRC configuration of the particular DCI format indicates a bitwidth of the HARQ process ID field; receiving a DCI format that includes a one-shot HARQ-ACK feedback request; and transmitting, based at least in part on the received DCI format, one-shot HARQ-ACK feedback corresponding to the first set of HARQ process IDs or a second set of HARQ process IDs, wherein the second set of HARQ process IDs is identified based on the bitwidth of the HARQ process ID field.
  • RRC radio resource control
  • IDs hybrid automatic repeat request
  • DCI downlink control information
  • a method of wireless communication may include transmitting an RRC configuration of a first set of HARQ process IDs and an RRC configuration of a particular DCI format that includes a HARQ process ID field, wherein the RRC configuration of the particular DCI format indicates a bitwidth of the HARQ process ID field; transmitting a DCI format that includes a one-shot HARQ-ACK feedback request; and receiving, based at least in part on the transmitted DCI format, one-shot HARQ-ACK feedback corresponding to the first set of HARQ process IDs or a second set of HARQ process IDs, wherein the second set of HARQ process IDs is identified based on the bitwidth of the HARQ process ID field.
  • a UE for wireless communication may include a memory and one or more processors operatively coupled to the memory.
  • the memory and the one or more processors may be configured to receive an RRC configuration of a first set of HARQ process IDs and an RRC configuration of a particular DCI format that includes a HARQ process ID field, wherein the RRC configuration of the particular DCI format indicates a bitwidth of the HARQ process ID field; receive a DCI format that includes a one-shot HARQ-ACK feedback request; and transmit, based at least in part on the received DCI format, one-shot HARQ-ACK feedback corresponding to the first set of HARQ process IDs or a second set of HARQ process IDs, wherein the second set of HARQ process IDs is identified based on the bitwidth of the HARQ process ID field.
  • a base station for wireless communication may include a memory and one or more processors operatively coupled to the memory.
  • the memory and the one or more processors may be configured to transmit an RRC configuration of a first set of HARQ process IDs and an RRC configuration of a particular DCI format that includes a HARQ process ID field, wherein the RRC configuration of the particular DCI format indicates a bitwidth of the HARQ process ID field; transmit a DCI format that includes a one-shot HARQ-ACK feedback request; and receive, based at least in part on the transmitted DCI format, one-shot HARQ-ACK feedback corresponding to the first set of HARQ process IDs or a second set of HARQ process IDs, wherein the second set of HARQ process IDs is identified based on the bitwidth of the HARQ process ID field.
  • a non-transitory computer-readable medium may store one or more instructions for wireless communication.
  • the one or more instructions when executed by one or more processors of a UE, may cause the one or more processors to receive an RRC configuration of a first set of HARQ process IDs and an RRC configuration of a particular DCI format that includes a HARQ process ID field, wherein the RRC configuration of the particular DCI format indicates a bitwidth of the HARQ process ID field; receive a DCI format that includes a one-shot HARQ-ACK feedback request; and transmit, based at least in part on the received DCI format, one-shot HARQ-ACK feedback corresponding to the first set of HARQ process IDs or a second set of HARQ process IDs, wherein the second set of HARQ process IDs is identified based on the bitwidth of the HARQ process ID field.
  • a non-transitory computer-readable medium may store one or more instructions for wireless communication.
  • the one or more instructions when executed by one or more processors of a base station, may cause the one or more processors to transmit an RRC configuration of a first set of HARQ process IDs and an RRC configuration of a particular DCI format that includes a HARQ process ID field, wherein the RRC configuration of the particular DCI format indicates a bitwidth of the HARQ process ID field; transmit a DCI format that includes a one-shot HARQ-ACK feedback request; and receive, based at least in part on the transmitted DCI format, one-shot HARQ-ACK feedback corresponding to the first set of HARQ process IDs or a second set of HARQ process IDs, wherein the second set of HARQ process IDs is identified based on the bitwidth of the HARQ process ID field.
  • an apparatus for wireless communication may include means for receiving an RRC configuration of a first set of HARQ process IDs and an RRC configuration of a particular DCI format that includes a HARQ process ID field, wherein the RRC configuration of the particular DCI format indicates a bitwidth of the HARQ process ID field; means for receiving a DCI format that includes a one-shot HARQ-ACK feedback request; and means for transmitting, based at least in part on the received DCI format, one-shot HARQ-ACK feedback corresponding to the first set of HARQ process IDs or a second set of HARQ process IDs, wherein the second set of HARQ process IDs is identified based on the bitwidth of the HARQ process ID field.
  • an apparatus for wireless communication may include means for transmitting an RRC configuration of a first set of HARQ process IDs and an RRC configuration of a particular DCI format that includes a HARQ process ID field, wherein the RRC configuration of the particular DCI format indicates a bitwidth of the HARQ process ID field; means for transmitting a DCI format that includes a one-shot HARQ-ACK feedback request; and means for receiving, based at least in part on the transmitted DCI format, one-shot HARQ-ACK feedback corresponding to the first set of HARQ process IDs or a second set of HARQ process IDs, wherein the second set of HARQ process IDs is identified based on the bitwidth of the HARQ process ID field.
  • aspects generally include a method, apparatus, system, computer program product, non-transitory computer-readable medium, user equipment, base station, wireless communication device, and/or processing system as substantially described herein with reference to and as illustrated by the drawings and specification.
  • Fig. 1 is a block diagram conceptually illustrating an example of a wireless communication network, in accordance with various aspects of the present disclosure.
  • Fig. 2 is a block diagram conceptually illustrating an example of a base station in communication with a UE in a wireless communication network, in accordance with various aspects of the present disclosure.
  • Fig. 3 is a diagram illustrating an example of one-shot hybrid automatic repeat request acknowledgment feedback, in accordance with various aspects of the present disclosure.
  • Fig. 4 is a diagram illustrating an example process performed, for example, by a user equipment, in accordance with various aspects of the present disclosure.
  • Fig. 5 is a diagram illustrating an example process performed, for example, by a base station, in accordance with various aspects of the present disclosure.
  • Fig. 1 is a diagram illustrating a wireless network 100 in which aspects of the present disclosure may be practiced.
  • the wireless network 100 may be an LTE network or some other wireless network, such as a 5G or NR network.
  • the wireless network 100 may include a number of BSs 110 (shown as BS 110a, BS 110b, BS 110c, and BS 110d) and other network entities.
  • a BS is an entity that communicates with user equipment (UEs) and may also be referred to as a base station, a NR BS, a Node B, a gNB, a 5G node B (NB) , an access point, a transmit receive point (TRP) , and/or the like.
  • Each BS may provide communication coverage for a particular geographic area.
  • the term “cell” can refer to a coverage area of a BS and/or a BS subsystem serving this coverage area, depending on the context in which the term is used.
  • a BS may provide communication coverage for a macro cell, a pico cell, a femto cell, and/or another type of cell.
  • a macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs with service subscription.
  • a pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs with service subscription.
  • a femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by UEs having association with the femto cell (e.g., UEs in a closed subscriber group (CSG) ) .
  • a BS for a macro cell may be referred to as a macro BS.
  • a BS for a pico cell may be referred to as a pico BS.
  • a BS for a femto cell may be referred to as a femto BS or a home BS.
  • a BS 110a may be a macro BS for a macro cell 102a
  • a BS 110b may be a pico BS for a pico cell 102b
  • a BS 110c may be a femto BS for a femto cell 102c.
  • a BS may support one or multiple (e.g., three) cells.
  • eNB base station
  • NR BS NR BS
  • gNB gNode B
  • AP AP
  • node B node B
  • 5G NB 5G NB
  • cell may be used interchangeably herein.
  • a cell may not necessarily be stationary, and the geographic area of the cell may move according to the location of a mobile BS.
  • the BSs may be interconnected to one another and/or to one or more other BSs or network nodes (not shown) in the wireless network 100 through various types of backhaul interfaces such as a direct physical connection, a virtual network, and/or the like using any suitable transport network.
  • Wireless network 100 may also include relay stations.
  • a relay station is an entity that can receive a transmission of data from an upstream station (e.g., a BS or a UE) and send a transmission of the data to a downstream station (e.g., a UE or a BS) .
  • a relay station may also be a UE that can relay transmissions for other UEs.
  • a relay station 110d may communicate with macro BS 110a and a UE 120d in order to facilitate communication between BS 110a and UE 120d.
  • a relay station may also be referred to as a relay BS, a relay base station, a relay, and/or the like.
  • Wireless network 100 may be a heterogeneous network that includes BSs of different types, e.g., macro BSs, pico BSs, femto BSs, relay BSs, and/or the like. These different types of BSs may have different transmit power levels, different coverage areas, and different impacts on interference in wireless network 100.
  • macro BSs may have a high transmit power level (e.g., 5 to 40 Watts) whereas pico BSs, femto BSs, and relay BSs may have lower transmit power levels (e.g., 0.1 to 2 Watts) .
  • a network controller 130 may couple to a set of BSs and may provide coordination and control for these BSs.
  • Network controller 130 may communicate with the BSs via a backhaul.
  • the BSs may also communicate with one another, e.g., directly or indirectly via a wireless or wireline backhaul.
  • UEs 120 may be dispersed throughout wireless network 100, and each UE may be stationary or mobile.
  • a UE may also be referred to as an access terminal, a terminal, a mobile station, a subscriber unit, a station, and/or the like.
  • a UE may be a cellular phone (e.g., a smart phone) , a personal digital assistant (PDA) , a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device or equipment, biometric sensors/devices, wearable devices (smart watches, smart clothing, smart glasses, smart wrist bands, smart jewelry (e.g., smart ring, smart bracelet) ) , an entertainment device (e.g., a music or video device, or a satellite radio) , a vehicular component or sensor, smart meters/sensors, industrial manufacturing equipment, a global positioning system device, or any other suitable device that is configured to communicate via a wireless or wired medium.
  • PDA personal digital assistant
  • WLL wireless local loop
  • Some UEs may be considered machine-type communication (MTC) or evolved or enhanced machine-type communication (eMTC) UEs.
  • MTC and eMTC UEs include, for example, robots, drones, remote devices, sensors, meters, monitors, location tags, and/or the like, that may communicate with a base station, another device (e.g., remote device) , or some other entity.
  • a wireless node may provide, for example, connectivity for or to a network (e.g., a wide area network such as Internet or a cellular network) via a wired or wireless communication link.
  • Some UEs may be considered Internet-of-Things (IoT) devices, and/or may be implemented as NB-IoT (narrowband internet of things) devices.
  • IoT Internet-of-Things
  • NB-IoT narrowband internet of things
  • UE 120 may be included inside a housing that houses components of UE 120, such as processor components, memory components, and/or the like.
  • the processor components and the memory components may be coupled together.
  • the processor components e.g., one or more processors
  • the memory components e.g., a memory
  • the processor components and the memory components may be operatively coupled, communicatively coupled, electronically coupled, electrically coupled, and/or the like.
  • any number of wireless networks may be deployed in a given geographic area.
  • Each wireless network may support a particular radio access technology (RAT) and may operate on one or more frequencies.
  • a RAT may also be referred to as a radio technology, an air interface, and/or the like.
  • a frequency may also be referred to as a carrier, a frequency channel, and/or the like.
  • Each frequency may support a single RAT in a given geographic area in order to avoid interference between wireless networks of different RATs.
  • NR or 5G RAT networks may be deployed.
  • two or more UEs 120 may communicate directly using one or more sidelink channels (e.g., without using a base station 110 as an intermediary to communicate with one another) .
  • the UEs 120 may communicate using peer-to-peer (P2P) communications, device-to-device (D2D) communications, a vehicle-to-everything (V2X) protocol (e.g., which may include a vehicle-to-vehicle (V2V) protocol, a vehicle-to-infrastructure (V2I) protocol, and/or the like) , a mesh network, and/or the like.
  • V2X vehicle-to-everything
  • the UE 120 may perform scheduling operations, resource selection operations, and/or other operations described elsewhere herein as being performed by the base station 110.
  • Fig. 1 is provided as an example. Other examples may differ from what is described with regard to Fig. 1.
  • Fig. 2 shows a block diagram of a design 200 of base station 110 and UE 120, which may be one of the base stations and one of the UEs in Fig. 1.
  • Base station 110 may be equipped with T antennas 234a through 234t
  • UE 120 may be equipped with R antennas 252a through 252r, where in general T ⁇ 1 and R ⁇ 1.
  • a transmit processor 220 may receive data from a data source 212 for one or more UEs, select one or more modulation and coding schemes (MCS) for each UE based at least in part on channel quality indicators (CQIs) received from the UE, process (e.g., encode and modulate) the data for each UE based at least in part on the MCS (s) selected for the UE, and provide data symbols for all UEs. Transmit processor 220 may also process system information (e.g., for semi-static resource partitioning information (SRPI) and/or the like) and control information (e.g., CQI requests, grants, upper layer signaling, and/or the like) and provide overhead symbols and control symbols.
  • MCS modulation and coding schemes
  • Transmit processor 220 may also generate reference symbols for reference signals (e.g., the cell-specific reference signal (CRS) ) and synchronization signals (e.g., the primary synchronization signal (PSS) and secondary synchronization signal (SSS) ) .
  • a transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on the data symbols, the control symbols, the overhead symbols, and/or the reference symbols, if applicable, and may provide T output symbol streams to T modulators (MODs) 232a through 232t. Each modulator 232 may process a respective output symbol stream (e.g., for OFDM and/or the like) to obtain an output sample stream.
  • TX transmit
  • MIMO multiple-input multiple-output
  • Each modulator 232 may process a respective output symbol stream (e.g., for OFDM and/or the like) to obtain an output sample stream.
  • Each modulator 232 may further process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal.
  • T downlink signals from modulators 232a through 232t may be transmitted via T antennas 234a through 234t, respectively.
  • the synchronization signals can be generated with location encoding to convey additional information.
  • antennas 252a through 252r may receive the downlink signals from base station 110 and/or other base stations and may provide received signals to demodulators (DEMODs) 254a through 254r, respectively.
  • Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) a received signal to obtain input samples.
  • Each demodulator 254 may further process the input samples (e.g., for OFDM and/or the like) to obtain received symbols.
  • a MIMO detector 256 may obtain received symbols from all R demodulators 254a through 254r, perform MIMO detection on the received symbols if applicable, and provide detected symbols.
  • a receive processor 258 may process (e.g., demodulate and decode) the detected symbols, provide decoded data for UE 120 to a data sink 260, and provide decoded control information and system information to a controller/processor 280.
  • a channel processor may determine reference signal received power (RSRP) , received signal strength indicator (RSSI) , reference signal received quality (RSRQ) , channel quality indicator (CQI) , and/or the like.
  • RSRP reference signal received power
  • RSSI received signal strength indicator
  • RSRQ reference signal received quality
  • CQI channel quality indicator
  • one or more components of UE 120 may be included in a housing.
  • a transmit processor 264 may receive and process data from a data source 262 and control information (e.g., for reports comprising RSRP, RSSI, RSRQ, CQI, and/or the like) from controller/processor 280. Transmit processor 264 may also generate reference symbols for one or more reference signals. The symbols from transmit processor 264 may be precoded by a TX MIMO processor 266 if applicable, further processed by modulators 254a through 254r (e.g., for DFT-s-OFDM, CP-OFDM, and/or the like) , and transmitted to base station 110.
  • modulators 254a through 254r e.g., for DFT-s-OFDM, CP-OFDM, and/or the like
  • the uplink signals from UE 120 and other UEs may be received by antennas 234, processed by demodulators 232, detected by a MIMO detector 236 if applicable, and further processed by a receive processor 238 to obtain decoded data and control information sent by UE 120.
  • Receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to controller/processor 240.
  • Base station 110 may include communication unit 244 and communicate to network controller 130 via communication unit 244.
  • Network controller 130 may include communication unit 294, controller/processor 290, and memory 292.
  • Controller/processor 240 of base station 110, controller/processor 280 of UE 120, and/or any other component (s) of Fig. 2 may perform one or more techniques associated with one-shot hybrid automatic repeat request acknowledgment (HARQ-ACK) feedback, as described in more detail elsewhere herein.
  • controller/processor 240 of base station 110, controller/processor 280 of UE 120, and/or any other component (s) of Fig. 2 may perform or direct operations of, for example, process 400 of Fig. 4, process 500 of Fig. 5, and/or other processes as described herein.
  • Memories 242 and 282 may store data and program codes for base station 110 and UE 120, respectively.
  • memory 242 and/or memory 282 may comprise a non-transitory computer-readable medium storing one or more instructions for wireless communication.
  • the one or more instructions when executed (e.g., directly, or after compiling, converting, interpreting, and/or the like) by one or more processors of the base station 110 and/or the UE 120, may perform or direct operations of, for example, process 400 of Fig. 4, process 500 of Fig. 5, and/or other processes as described herein.
  • executing instructions may include running the instructions, converting the instructions, compiling the instructions, interpreting the instructions, and/or the like.
  • a scheduler 246 may schedule UEs for data transmission on the downlink and/or uplink.
  • UE 120 may include means for receiving a radio resource control (RRC) configuration of a first set of hybrid automatic repeat request (HARQ) process identifiers (IDs) and an RRC configuration of a particular downlink control information (DCI) format that includes a HARQ process ID field, wherein the RRC configuration of the particular DCI format indicates a bitwidth of the HARQ process ID field, means for receiving a DCI format that includes a one-shot HARQ-ACK feedback request, means for transmitting, based at least in part on the received DCI format, one- shot HARQ-ACK feedback corresponding to the first set of HARQ process IDs or a second set of HARQ process IDs, wherein the second set of HARQ process IDs is identified based on the bitwidth of the HARQ process ID field, and/or the like.
  • RRC radio resource control
  • IDs hybrid automatic repeat request
  • DCI downlink control information
  • such means may include one or more components of UE 120 described in connection with Fig. 2, such as controller/processor 280, transmit processor 264, TX MIMO processor 266, MOD 254, antenna 252, DEMOD 254, MIMO detector 256, receive processor 258, and/or the like.
  • base station 110 may include means for transmitting an RRC configuration of a first set of HARQ process IDs and an RRC configuration of a particular DCI format that includes a HARQ process ID field, wherein the RRC configuration of the particular DCI format indicates a bitwidth of the HARQ process ID field, means for transmitting a DCI format that includes a one-shot HARQ-ACK feedback request, means for receiving, based at least in part on the transmitted DCI format, one-shot HARQ-ACK feedback corresponding to the first set of HARQ process IDs or a second set of HARQ process IDs, wherein the second set of HARQ process IDs is identified based on the bitwidth of the HARQ process ID field, and/or the like.
  • such means may include one or more components of base station 110 described in connection with Fig. 2, such as antenna 234, DEMOD 232, MIMO detector 236, receive processor 238, controller/processor 240, transmit processor 220, TX MIMO processor 230, MOD 232, antenna 234, and/or the like.
  • Fig. 2 is provided as an example. Other examples may differ from what is described with regard to Fig. 2.
  • HARQ-ACK feedback provides a way for a receiver to signal whether the receiver has successfully received information transmitted by a transmitter.
  • a UE and a base station may maintain respective HARQ-ACK configurations, and may selectively retransmit information based at least in part on results of HARQ-ACK procedures.
  • a HARQ process ID may be used to differentiate HARQ-ACK feedback associated with a transmission or resource from HARQ-ACK feedback associated with other transmissions or resources.
  • the UE 120 may report HARQ-ACK information, generated according to a HARQ-ACK codebook, which may be used to indicate an ACK or a NACK for each slot included in a downlink association set corresponding to the HARQ-ACK reporting occasion.
  • the HARQ-ACK codebook may be a semi-static HARQ-ACK codebook (a Type 1 HARQ-ACK codebook) , a non- enhanced dynamic HARQ-ACK codebook (a Type 2 HARQ-ACK codebook) , an enhanced dynamic codebook, a one-shot HARQ-ACK codebook (a Type 3 HARQ-ACK codebook) , and/or the like.
  • the one-shot (Type 3) HARQ-ACK codebook provides a clean and simple way to collect all acknowledgment (ACK) and negative acknowledgment (NACK) bits for configured HARQ processes corresponding to a set of configured component carriers (CCs) .
  • One-shot HARQ-ACK feedback can be configurable with semi-static codebook, (non-enhanced) dynamic HARQ codebook, enhanced dynamic codebook, and/or the like. If a UE is requested to report both one-shot HARQ-ACK feedback and another type of HARQ-ACK feedback in the same slot, the UE reports only the one-shot HARQ-ACK feedback.
  • Type 3 HARQ-Ack feedback is requested by a downlink (DL) DCI when a one-shot HARQ-Ack request field in the DCI is set to 1.
  • a base station may transmit a DCI that schedules a PDSCH or PUSCH.
  • the DCI includes a HARQ process ID field.
  • a HARQ process ID field having a bitwidth (quantity of bits) of four.
  • Developments in NR have included the introduction of DCI Format 0_2 (for uplink scheduling) and DCI Format 1_2 (for downlink scheduling) , each of which includes a HARQ process ID field having a flexible size.
  • the bitwidth of the HARQ process ID field is configurable and can be 0, 1, 2, 3, or 4 bits.
  • These new formats can be configured with a small size to improve physical downlink control channel (PDCCH) reliability, or with a larger size to improve scheduling flexibility and/or provide more functionality.
  • DCI formats also include a priority indicator field that can be configured to indicate whether a HARQ-ACK feedback is high priority or low priority.
  • DCI Format 1_2 was not originally designed to support a request for one-shot HARQ-ACK feedback. Accordingly, DCI Format 1_2, as designed, is not useable in NR-U implementations. However, NR-U implementations, and some licensed implementations, may benefit from the reliability and/or flexibility provided by DCI Format 1_2.
  • a base station may transmit a one-shot HARQ-ACK feedback request to a UE to trigger a one-shot HARQ-ACK feedback.
  • the base station may provide an RRC configuration to the UE of a first set of HARQ process IDs (HARQ processes configured per each component carrier) and an RRC configuration of a particular DCI format having a HARQ process ID field with a configurable bitwidth.
  • the RRC configuration may indicate the bitwidth of the HARQ process ID field, and a second set of HARQ process IDs may be identified based on the bitwidth.
  • the UE may determine, based on the DCI format received, whether to use the first set of HARQ process IDs or the second set of HARQ process IDs. In this manner, the reliability and/or flexibility of the DCI Format 1_2 may be available for use in requesting one-shot HARQ-ACK feedback, while maintaining functionality for other DCI formats.
  • Fig. 3 is a diagram illustrating an example 300 of one-shot HARQ-ACK feedback, in accordance with various aspects of the present disclosure. As shown, a UE 120 and a base station 110 may communicate with one another.
  • the base station 110 may transmit, and the UE 120 may receive, RRC configurations.
  • the RRC configurations may include an RRC configuration of a one-shot HARQ-ACK feedback, an RRC configuration of a first set of HARQ process IDs, an RRC configuration of a particular DCI format, and/or the like.
  • the one-shot HARQ-ACK configuration may be based at least in part on a received DCI format.
  • the RRC message may include an indication of whether to include new data indicators (NDIs) in the one-shot HARQ-ACK feedback based at least in part on a received DCI format.
  • the RRC message may include an indication of whether to include code-block group (CBG) -based HARQ-ACK in the one-shot HARQ-ACK configuration based at least in part on a received DCI format.
  • CBG code-block group
  • the RRC message may include a slot size of a physical uplink control channel (PUCCH) associated with the one-shot feedback based at least in part on a received DCI format.
  • PUCCH physical uplink control channel
  • the RRC configuration of the particular DCI format may configure the DCI format to include a HARQ process ID field.
  • the RRC configuration of the particular DCI format may indicate a bitwidth of the HARQ process ID field.
  • the particular DCI format may include a DCI Format 1_2.
  • the base station 110 may transmit, and the UE 120 may receive, a DCI format that includes a one-shot HARQ-ACK feedback request.
  • the received DCI format may include a DCI Format 1_2, a DCI Format 1_1, and/or the like.
  • the base station 110 may transmit, and the UE 120 may receive, a downlink communication.
  • the UE 120 may transmit, and the base station 110 may receive, one-shot HARQ-ACK feedback.
  • the UE 120 may generate the one-shot HARQ-ACK feedback according to a Type 3 codebook.
  • the set of HARQ process IDs used for the HARQ-ACK feedback may be selected based on the DCI format.
  • the UE 120 may transmit, based at least in part on the received DCI format, one-shot HARQ-ACK feedback corresponding to the first set of HARQ process IDs or a second set of HARQ process IDs.
  • the second set of HARQ process IDs may be identified based on the bitwidth of the HARQ process ID field configured for the particular DCI format.
  • the received DCI format may include a DCI Format 1_2, in which case the UE 120 may generate the one-shot HARQ-ACK feedback based at least in part on the second set of HARQ process IDs.
  • a smallest HARQ process ID of the second set of HARQ process IDs may be zero.
  • a largest HARQ process ID of the second set of HARQ process IDs may be based at least in part on a power of the bitwidth of the HARQ process ID field (e.g., based at least in part on an integer that is equal to one less than two to a power of the bitwidth of the HARQ process ID field) .
  • a largest HARQ process ID of the second set of HARQ process IDs may be based at least in part on a quantity of HARQ process IDs in the first set of HARQ process IDs.
  • the first set of HARQ process IDs may be associated with a particular CC.
  • the largest HARQ process ID of the second set of HARQ process IDs may be a minimum of an integer that is equal to one less than two to a power of the bitwidth of the HARQ process ID field and the quantity of HARQ process IDs in the first set of HARQ process IDs.
  • the received DCI format may include a DCI Format 1_1, in which case the one-shot HARQ-ACK feedback may be generated based at least in part on the first set of HARQ process IDs.
  • the DCI format may correspond to a CC of a set of CCs.
  • the first set of HARQ process IDs may correspond to the CC.
  • the received DCI format may include a DCI Format 1_2, and the one-shot HARQ-ACK feedback may correspond to the CC and may be generated based at least in part on the second set of HARQ process IDs.
  • one-shot HARQ-Ack feedback for HARQ process in all the configured CCs or a set of configured CCs may be transmitted, and the first set and the second set of HARQ process IDs may be determined per CC (e.g. based at least in part in corresponding DCI formats) , and the collection of the HARQ-Ack bits for those CCs may be transmitted by the UE.
  • the UE 120 may determine that a high priority level of the one-shot HARQ feedback request is indicated for the CC by the DCI; and generate, based at least in part on determining that the high priority level of the one-shot HARQ feedback request is indicated for the CC by the DCI, the one-shot HARQ-ACK feedback based at least in part on the second set of HARQ process IDs.
  • the CC is not configured to monitor DCI Format 1_2, and the UE 120 may generate the one-shot HARQ-ACK feedback according to a type 3 codebook, where the one-shot HARQ-ACK feedback corresponds to the first set of HARQ process IDs.
  • the CC may not be configured to monitor DCI Format 1_2, and the UE 120 may generate the one-shot HARQ-ACK feedback according to a type 3 codebook, where the one-shot HARQ-ACK feedback excludes at least one HARQ process ID of the first set of HARQ process IDs corresponding to the CC.
  • the received DCI format may include a DCI Format 1_2 and the one-shot HARQ-ACK feedback request may correspond to a PUCCH.
  • the UE 120 may determine that a condition is satisfied by determining that the UE 120 does not receive an additional DCI format that includes a DCI Format 1_1 and that includes an additional one-shot HARQ-ACK feedback request corresponding to the PUCCH.
  • the UE 120 may generate, based at least in part on determining that the condition is satisfied, the one-shot HARQ-ACK feedback based at least in part on the second set of HARQ process IDs.
  • the UE 120 may be configured to receive only one of a DCI Format 1_2 including a one-shot HARQ-ACK feedback request corresponding to a PUCCH or a DCI Format 1_1 including a one-shot HARQ-ACK feedback request corresponding to the PUCCH.
  • the received DCI format includes a DCI Format 1_2 and the one-shot HARQ-ACK feedback request corresponds to a PUCCH.
  • the UE 120 may receive a DCI format 1_1 that includes an additional one-shot HARQ-ACK feedback request corresponding to the PUCCH.
  • the UE 120 may generate the one-shot HARQ-ACK feedback based at least in part on the second set of HARQ process IDs.
  • the received DCI format may include a DCI Format 1_1 and the one-shot HARQ-ACK feedback request corresponds to a PUCCH.
  • the UE 120 may receive a DCI Format 1_2 that includes an additional one-shot HARQ-ACK feedback request corresponding to the PUCCH. In this case, the UE 120 may generate the one-shot HARQ-ACK feedback based at least in part on the first set of HARQ process IDs.
  • the UE 120 may be configured to receive only one of a DCI Format 1_2 corresponding to a CC of a set of CCs including a one-shot HARQ-ACK feedback request corresponding to a PUCCH or a DCI Format 1_1 corresponding to the CC including a one-shot HARQ-ACK feedback request corresponding to the PUCCH.
  • the received DCI format may include a DCI Format 1_2 corresponding to a CC of a set of CCs, wherein the one-shot HARQ-ACK feedback request corresponds to a PUCCH associated with the CC.
  • the UE 120 may receive a DCI format 1_1 corresponding to the CC that includes an additional one-shot HARQ-ACK feedback request corresponding to the PUCCH, and generate the one-shot HARQ-ACK feedback based at least in part on the second set of HARQ process IDs or the first set of HARQ process IDs.
  • the UE 120 may determine the set of HARQ process IDs to use based at least in part on a priority level indication. In some aspects, the UE 120 may determine a priority level of the one-shot HARQ feedback request indicated by the DCI and generate, based at least in part on the priority level of the one-shot HARQ feedback request, the one-shot HARQ-ACK feedback based at least in part on the second set of HARQ process IDs.
  • the UE 120 may determine that a high priority level of the one-shot HARQ feedback request is indicated by the DCI and generate, based at least in part on determining that the high priority level of the one-shot HARQ feedback request is indicated by the DCI, the one-shot HARQ-ACK feedback based at least in part on the second set of HARQ process IDs. In some aspects, the UE 120 may determine that a low priority level of the one-shot HARQ feedback request is indicated by the DCI and generate, based at least in part on determining that the low priority level of one-shot HARQ feedback request is indicated by the DCI, the one-shot HARQ-ACK feedback based at least in part on the first set of HARQ process IDs.
  • Fig. 3 is provided as an example. Other examples may differ from what is described with regard to Fig. 3.
  • Fig. 4 is a diagram illustrating an example process 400 performed, for example, by a UE, in accordance with various aspects of the present disclosure.
  • Example process 400 is an example where the UE (e.g., UE 120 and/or the like) performs operations associated with one-shot HARQ-ACK feedback enhancements.
  • the UE e.g., UE 120 and/or the like
  • process 400 may include receiving an RRC configuration of a first set of HARQ process IDs and an RRC configuration of a particular DCI format that includes a HARQ process ID field, wherein the RRC configuration of the particular DCI format indicates a bitwidth of the HARQ process ID field (block 410) .
  • the UE e.g., using receive processor 258, controller/processor 280, memory 282, and/or the like
  • the RRC configuration of the particular DCI format indicates a bitwidth of the HARQ process ID field.
  • process 400 may include receiving a DCI format that includes a one-shot HARQ-ACK feedback request (block 420) .
  • the UE e.g., using receive processor 258, controller/processor 280, memory 282, and/or the like
  • process 400 may include transmitting, based at least in part on the received DCI format, one-shot HARQ-ACK feedback corresponding to the first set of HARQ process IDs or a second set of HARQ process IDs, wherein the second set of HARQ process IDs is identified based on the bitwidth of the HARQ process ID field (block 430) .
  • the UE e.g., using transmit processor 264, controller/processor 280, memory 282, and/or the like
  • the second set of HARQ process IDs is identified based on the bitwidth of the HARQ process ID field.
  • Process 400 may include additional aspects, such as any single aspect or any combination of aspects described below and/or in connection with one or more other processes described elsewhere herein.
  • the received DCI format comprises a DCI Format 1_2 or a DCI Format 1_1.
  • the received DCI format comprises a DCI Format 1_2, and process 400 further includes generating the one-shot HARQ-ACK feedback based at least in part on the second set of HARQ process IDs.
  • process 400 includes generating the one-shot HARQ-ACK feedback according to a type 3 codebook.
  • a smallest HARQ process ID of the second set of HARQ process IDs is zero.
  • a largest HARQ process ID of the second set of HARQ process IDs is based at least in part on an integer that is equal to one less than two to a power of the bitwidth of the HARQ process ID field.
  • a largest HARQ process ID of the second set of HARQ process IDs is based at least in part on a quantity of HARQ process IDs in the first set of HARQ process IDs, and the first set of HARQ process IDs is associated with a particular component carrier.
  • the largest HARQ process ID of the second set of HARQ process IDs is a minimum of: an integer that is equal to one less than two to a power of the bitwidth of the HARQ process ID field, and the quantity of HARQ process IDs in the first set of HARQ process IDs.
  • process 400 includes determining a priority level of the one-shot HARQ feedback request indicated by the DCI; and generating, based at least in part on the priority level of the one-shot HARQ feedback request, the one-shot HARQ-ACK feedback based at least in part on the second set of HARQ process IDs.
  • process 400 includes determining that a high priority level of the one-shot HARQ feedback request is indicated by the DCI; and generating, based at least in part on determining that the high priority level of the one-shot HARQ feedback request is indicated by the DCI, the one-shot HARQ-ACK feedback based at least in part on the second set of HARQ process IDs.
  • process 400 includes determining that a low priority level of the one-shot HARQ feedback request is indicated by the DCI; and generating, based at least in part on determining that the low priority level of one-shot HARQ feedback request is indicated by the DCI, the one-shot HARQ-ACK feedback based at least in part on the first set of HARQ process IDs.
  • the received DCI format comprises a DCI Format 1_1, and the one-shot HARQ-ACK feedback is generated based at least in part on the first set of HARQ process IDs.
  • the DCI corresponds to a CC of a set of CCs.
  • the first set of HARQ process IDs corresponds to the CC.
  • the received DCI format comprises a DCI Format 1_2
  • the one-shot HARQ-ACK feedback corresponds to the CC and is generated based at least in part on the second set of HARQ process IDs.
  • process 400 includes determining that a high priority level of the one-shot HARQ feedback request is indicated for the CC by the DCI; and generating, based at least in part on determining that the high priority level of the one-shot HARQ feedback request is indicated for the CC by the DCI, the one-shot HARQ-ACK feedback based at least in part on the second set of HARQ process IDs.
  • the CC is not configured to monitor DCI Format 1_2, and process 400 includes generating the one-shot HARQ-ACK feedback according to a type 3 codebook, wherein the one-shot HARQ-ACK feedback corresponds to the first set of HARQ process IDs.
  • the CC is not configured to monitor DCI Format 1_2, and process 400 includes generating the one-shot HARQ-ACK feedback according to a type 3 codebook, wherein the one-shot HARQ-ACK feedback excludes at least one HARQ process ID of the first set of HARQ process IDs corresponding to the CC.
  • the received DCI format comprises a DCI Format 1_2 and the one-shot HARQ-ACK feedback request corresponds to a PUCCH
  • process 400 includes determining that a condition is satisfied by determining that the UE does not receive an additional DCI format that comprises a DCI Format 1_1 and that includes an additional one-shot HARQ-ACK feedback request corresponding to the PUCCH, and generating, based at least in part on determining that the condition is satisfied, the one-shot HARQ-ACK feedback based at least in part on the second set of HARQ process IDs.
  • the UE is configured to receive only one of a DCI Format 1_2 including a one-shot HARQ-ACK feedback request corresponding to a PUCCH, or a DCI Format 1_1 including a one-shot HARQ-ACK feedback request corresponding to the PUCCH.
  • the received DCI format comprises a DCI Format 1_2 and the one-shot HARQ-ACK feedback request corresponds to a PUCCH
  • process 400 includes receiving a DCI format 1_1 that includes an additional one-shot HARQ-ACK feedback request corresponding to the PUCCH, and generating the one-shot HARQ-ACK feedback based at least in part on the second set of HARQ process IDs.
  • the received DCI format comprises a DCI Format 1_1 and the one-shot HARQ-ACK feedback request corresponds to a physical uplink control channel (PUCCH)
  • process 400 includes receiving a DCI Format 1_2 that includes an additional one-shot HARQ-ACK feedback request corresponding to the PUCCH, and generating the one-shot HARQ-ACK feedback based at least in part on the first set of HARQ process IDs.
  • PUCCH physical uplink control channel
  • the UE is configured to receive only one of a DCI Format 1_2 corresponding to a CC of a set of CCs including a one-shot HARQ-ACK feedback request corresponding to a PUCCH, or a DCI Format 1_1 corresponding to the CC including a one-shot HARQ-ACK feedback request corresponding to the PUCCH.
  • the received DCI format comprises a DCI Format 1_2 corresponding to a CC of a set of CCs
  • the one-shot HARQ-ACK feedback request corresponds to a PUCCH associated with the CC
  • process 400 includes receiving a DCI format 1_1 corresponding to the CC that includes an additional one-shot HARQ- ACK feedback request corresponding to the PUCCH, and generating the one-shot HARQ-ACK feedback based at least in part on the second set of HARQ process IDs.
  • the received DCI format comprises a DCI Format 1_1 corresponding to a CC of a set of CCs
  • the one-shot HARQ-ACK feedback request corresponds to a PUCCH
  • process 400 includes receiving a DCI Format 1_2 corresponding to the CC that includes an additional one-shot HARQ-ACK feedback request corresponding to the PUCCH, and generating the one-shot HARQ-ACK feedback based at least in part on the first set of HARQ process IDs.
  • the one-shot HARQ-ACK configuration is based at least in part on the received DCI format.
  • the RRC message comprises an indication of whether to include new data indicators in the one-shot HARQ-ACK feedback based at least in part on the received DCI format.
  • the RRC message comprises an indication of whether to include CBG-based HARQ-ACK in the one-shot HARQ-ACK configuration based at least in part on the received DCI format.
  • the RRC message comprises a slot size of a physical uplink control channel associated with the one-shot feedback based at least in part on the received DCI format.
  • process 400 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Fig. 4. Additionally, or alternatively, two or more of the blocks of process 400 may be performed in parallel.
  • Fig. 5 is a diagram illustrating an example process 500 performed, for example, by a base station, in accordance with various aspects of the present disclosure.
  • Example process 500 is an example where the base station (e.g., base station 110 and/or the like) performs operations associated with one-shot HARQ-ACK feedback enhancements.
  • the base station e.g., base station 110 and/or the like
  • process 500 may include transmitting an RRC configuration of a first set of HARQ process IDs and an RRC configuration of a particular DCI format that includes a HARQ process ID field, wherein the RRC configuration of the particular DCI format indicates a bitwidth of the HARQ process ID field (block 510) .
  • the base station e.g., using transmit processor 220, controller/processor 240, memory 242, and/or the like
  • the RRC configuration of the particular DCI format indicates a bitwidth of the HARQ process ID field.
  • process 500 may include transmitting a DCI format that includes a one-shot HARQ-ACK feedback request (block 520) .
  • the base station e.g., using transmit processor 220, controller/processor 240, memory 242, and/or the like
  • process 500 may include receiving, based at least in part on the transmitted DCI format, one-shot HARQ-ACK feedback corresponding to the first set of HARQ process IDs or a second set of HARQ process IDs, wherein the second set of HARQ process IDs is identified based on the bitwidth of the HARQ process ID field (block 530) .
  • the base station e.g., using receive processor 238, controller/processor 240, memory 242, and/or the like
  • the second set of HARQ process IDs is identified based on the bitwidth of the HARQ process ID field.
  • Process 500 may include additional aspects, such as any single aspect or any combination of aspects described below and/or in connection with one or more other processes described elsewhere herein.
  • the transmitted DCI format comprises a DCI Format 1_2 or a DCI Format 1_1.
  • the transmitted DCI format comprises a DCI Format 1_2, and the one-shot HARQ-ACK feedback is generated based at least in part on the second set of HARQ process IDs.
  • the one-shot HARQ-ACK feedback is generated according to a type 3 codebook.
  • a smallest HARQ process ID of the second set of HARQ process IDs is zero.
  • a largest HARQ process ID of the second set of HARQ process IDs is based at least in part on an integer that is equal to one less than two to a power of the bitwidth of the HARQ process ID field.
  • a largest HARQ process ID of the second set of HARQ process IDs is based at least in part on a quantity of HARQ process IDs in the first set of HARQ process IDs, and the first set of HARQ process IDs is associated with a particular component carrier.
  • the largest HARQ process ID of the second set of HARQ process IDs is a minimum of: an integer that is equal to one less than two to a power of the bitwidth of the HARQ process ID field, and the quantity of HARQ process IDs in the first set of HARQ process IDs.
  • a priority level of the one-shot HARQ feedback request is indicated by the DCI, and the one-shot HARQ feedback request is generated, based at least in part on the priority level of the the one-shot HARQ-ACK feedback, based at least in part on the second set of HARQ process IDs.
  • a high priority level of the one-shot HARQ feedback request is indicated by the DCI, and the one-shot HARQ-ACK feedback is generated, based at least in part on the high priority level of the one-shot HARQ feedback request, based at least in part on the second set of HARQ process IDs.
  • a low priority level of the one-shot HARQ feedback request is indicated by the DCI, and the one-shot HARQ-ACK feedback is generated, based at least in part on the low priority level of one-shot HARQ feedback request, based at least in part on the first set of HARQ process IDs.
  • the transmitted DCI format comprises a DCI Format 1_1, and the one-shot HARQ-ACK feedback is generated based at least in part on the first set of HARQ process IDs.
  • the transmitted DCI format corresponds to a CC of a set of CCs.
  • the first set of HARQ process IDs corresponds to the CC.
  • the transmitted DCI format comprises a DCI Format 1_2
  • the one-shot HARQ-ACK feedback corresponds to the CC and is generated based at least in part on the second set of HARQ process IDs.
  • a high priority level of the one-shot HARQ feedback request is indicated for the CC by the DCI, and the one-shot HARQ-ACK feedback is generated, based at least in part on the high priority level of the one-shot HARQ feedback request indicated for the CC by the DCI, based at least in part on the second set of HARQ process IDs.
  • the CC is not configured to monitor DCI Format 1_2, and the one-shot HARQ-ACK feedback is generated according to a type 3 codebook, the one-shot HARQ-ACK feedback corresponds to the first set of HARQ process IDs.
  • the CC is not configured to monitor DCI Format 1_2, and the one-shot HARQ-ACK feedback is generated according to a type 3 codebook, the one-shot HARQ-ACK feedback excludes at least one HARQ process ID of the first set of HARQ process IDs corresponding to the CC.
  • the transmitted DCI format comprises a DCI Format 1_2 and the one-shot HARQ-ACK feedback request corresponds to PUCCH, and a condition is determined to be satisfied by determining that the UE does not receive an additional DCI format that comprises a DCI Format 1_1 and that includes an additional one-shot HARQ-ACK feedback request corresponding to the PUCCH, and the one-shot HARQ-ACK feedback is generated, based at least in part on the UE determining that the condition is satisfied, based at least in part on the second set of HARQ process IDs.
  • the UE is configured to receive only one of a DCI Format 1_2 including a one-shot HARQ-ACK feedback request corresponding to a physical uplink control channel (PUCCH) , or a DCI Format 1_1 including a one-shot HARQ-ACK feedback request corresponding to the PUCCH.
  • a DCI Format 1_2 including a one-shot HARQ-ACK feedback request corresponding to a physical uplink control channel (PUCCH)
  • PUCCH physical uplink control channel
  • the transmitted DCI format comprises a DCI Format 1_2 and the one-shot HARQ-ACK feedback request corresponds to a PUCCH
  • process 500 includes transmitting a DCI format 1_1 that includes an additional one-shot HARQ-ACK feedback request corresponding to the PUCCH, where the one-shot HARQ-ACK feedback is generated based at least in part on the second set of HARQ process IDs.
  • the transmitted DCI format comprises a DCI Format 1_1 and the one-shot HARQ-ACK feedback request corresponds to a PUCCH
  • process 500 includes transmitting a DCI Format 1_2 that includes an additional one-shot HARQ-ACK feedback request corresponding to the PUCCH, where the one-shot HARQ-ACK feedback is generated based at least in part on the first set of HARQ process IDs.
  • the UE is configured to receive only one of a DCI Format 1_2 corresponding to a CC of a set of CCs including a one-shot HARQ-ACK feedback request corresponding to a PUCCH, or a DCI Format 1_1 corresponding to the CC including a one-shot HARQ-ACK feedback request corresponding to the PUCCH.
  • the transmitted DCI format comprises a DCI Format 1_2 corresponding to a CC of a set of CCs
  • the one-shot HARQ-ACK feedback request corresponds to a PUCCH associated with the CC
  • process 500 includes transmitting a DCI format 1_1 corresponding to the CC that includes an additional one-shot HARQ-ACK feedback request corresponding to the PUCCH, where the one-shot HARQ-ACK feedback is generated based at least in part on the second set of HARQ process IDs.
  • the transmitted DCI format comprises a DCI Format 1_1 corresponding to a CC of a set of CCs
  • the one-shot HARQ-ACK feedback request corresponds to a PUCCH
  • process 500 includes transmitting a DCI Format 1_2 corresponding to the CC that includes an additional one-shot HARQ-ACK feedback request corresponding to the PUCCH, where the one-shot HARQ-ACK feedback is generated based at least in part on the first set of HARQ process IDs.
  • the one-shot HARQ-ACK configuration is based at least in part on the received DCI format.
  • the RRC message comprises an indication of whether to include new data indicators in the one-shot HARQ-ACK feedback based at least in part on the received DCI format.
  • the RRC message comprises an indication of whether to include CBG-based HARQ-ACK in the one-shot HARQ-ACK configuration based at least in part on the received DCI format.
  • the RRC message comprises a slot size of a physical uplink control channel associated with the one-shot feedback based at least in part on the transmitted DCI format.
  • process 500 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Fig. 5. Additionally, or alternatively, two or more of the blocks of process 500 may be performed in parallel.
  • ком ⁇ онент is intended to be broadly construed as hardware, firmware, and/or a combination of hardware and software.
  • a processor is implemented in hardware, firmware, and/or a combination of hardware and software.
  • satisfying a threshold may, depending on the context, refer to a value being greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, not equal to the threshold, and/or the like.
  • “at least one of: a, b, or c” is intended to cover a, b, c, a-b, a-c, b-c, and a-b-c, as well as any combination with multiples of the same element (e.g., a-a, a-a-a, a-a-b, a-a-c, a-b-b, a-c-c, b-b, b-b-b, b-b-c, c-c, and c-c-c or any other ordering of a, b, and c) .
  • the terms “has, ” “have, ” “having, ” and/or the like are intended to be open-ended terms. Further, the phrase “based on” is intended to mean “based, at least in part, on” unless explicitly stated otherwise.

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Abstract

Divers aspects de la présente divulgation concernent de manière générale la communication sans fil. Selon certains aspects, un équipement utilisateur peut exécuter les étapes consistant à : recevoir une configuration de commande de ressources radio (RRC) d'un premier ensemble d'identifiants (ID) de processus de demande de répétition automatique hybride (HARQ) et une configuration de RRC d'un format particulier d'informations de commande de liaison descendante (DCI) qui contient un champ d'ID de processus HARQ, la configuration de RRC du format particulier de DCI indiquant une largeur de bit du champ d'ID de processus HARQ; recevoir un format de DCI qui contient une demande de renvoi de HARQ-ACK en une fois; et, au moins en partie sur la base du format de DCI reçu, transmettre un renvoi de HARQ-ACK en une fois correspondant au premier ensemble d'ID de processus HARQ ou à un second ensemble d'ID de processus HARQ, le second ensemble d'ID de processus HARQ étant identifié sur la base de la largeur de bit du champ d'ID de processus HARQ. La présente divulgation concerne également de nombreux autres aspects.
PCT/CN2020/081017 2020-03-25 2020-03-25 Améliorations d'un renvoi de harq-ack en une fois WO2021189277A1 (fr)

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Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2023068510A1 (fr) * 2021-10-21 2023-04-27 Lg Electronics Inc. Procédé et appareil pour transmettre un retour harq unique par un équipement utilisateur dans un système de communication sans fil
WO2023097215A1 (fr) * 2021-11-24 2023-06-01 Qualcomm Incorporated Configurations de livre de codes de demande de répétition automatique hybride (harq) indiquant des identifiants de processus harq

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