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WO2023059901A1 - Demande de répétition automatique hybride à planification semi-persistante différée sur un canal partagé de liaison montante physique - Google Patents

Demande de répétition automatique hybride à planification semi-persistante différée sur un canal partagé de liaison montante physique Download PDF

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Publication number
WO2023059901A1
WO2023059901A1 PCT/US2022/046092 US2022046092W WO2023059901A1 WO 2023059901 A1 WO2023059901 A1 WO 2023059901A1 US 2022046092 W US2022046092 W US 2022046092W WO 2023059901 A1 WO2023059901 A1 WO 2023059901A1
Authority
WO
WIPO (PCT)
Prior art keywords
communication
deferred
harq feedback
sps
pusch
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/US2022/046092
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English (en)
Inventor
Konstantinos Dimou
Jae Ho Ryu
Arvind Vardarajan Santhanam
Peter Gaal
Yan Zhou
Tao Luo
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qualcomm Inc
Original Assignee
Qualcomm Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Priority claimed from US17/937,919 external-priority patent/US20230113343A1/en
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of WO2023059901A1 publication Critical patent/WO2023059901A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1854—Scheduling and prioritising arrangements
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • 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
    • H04L5/0044—Allocation of payload; Allocation of data channels, e.g. PDSCH or PUSCH
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0053—Allocation of signalling, i.e. of overhead other than pilot signals
    • H04L5/0055—Physical resource allocation for ACK/NACK
    • 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
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/1607—Details of the supervisory signal
    • H04L1/1664—Details of the supervisory signal the supervisory signal being transmitted together with payload signals; piggybacking
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H04W72/232—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal the control data signalling from the physical layer, e.g. DCI signalling

Definitions

  • aspects of the present disclosure generally relate to wireless communication and to techniques and apparatuses for deferring semi-persistent scheduling (SPS) hybrid automatic repeat request (HARQ) feedback onto a physical uplink shared channel (PUSCH).
  • SPS semi-persistent scheduling
  • HARQ hybrid automatic repeat request
  • 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, 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 network may include one or more base stations that support communication for a user equipment (UE) or multiple UEs.
  • a UE may communicate with a base station via downlink communications and uplink communications.
  • Downlink (or “DL”) refers to a communication link from the base station to the UE
  • uplink (or “UL”) refers to a communication link from the UE to the base station.
  • NR New Radio
  • 5G is a set of enhancements to the LTE mobile standard promulgated by the 3GPP.
  • 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, using CP-OFDM and/or single-carrier frequency division multiplexing (SC-FDM) (also known as discrete Fourier transform spread OFDM (DFT-s-OFDM)) on the uplink, as well as supporting beamforming, multiple -input multiple -output (MIMO) antenna technology, and carrier aggregation.
  • OFDM orthogonal frequency division multiplexing
  • SC-FDM single-carrier frequency division multiplexing
  • DFT-s-OFDM discrete Fourier transform spread OFDM
  • MIMO multiple -input multiple -output
  • the UE may include a memory and one or more processors coupled to the memory.
  • the one or more processors may be configured to receive, from a base station, an indication to multiplex a deferred hybrid automatic repeat request (HARQ) feedback for a semi- persistent scheduling (SPS) downlink communication with a physical uplink shared channel (PUSCH) communication.
  • the one or more processors may be configured to transmit, to the base station, the deferred HARQ feedback for the SPS downlink communication multiplexed with the PUSCH communication.
  • HARQ hybrid automatic repeat request
  • SPS semi- persistent scheduling
  • PUSCH physical uplink shared channel
  • the base station may include a memory and one or more processors coupled to the memory.
  • the one or more processors may be configured to transmit, to a UE, an indication to multiplex a deferred HARQ feedback for an SPS downlink communication with a PUSCH communication.
  • the one or more processors may be configured to receive, from the UE, the deferred HARQ feedback for the SPS downlink communication multiplexed with the PUSCH communication.
  • Some aspects described herein relate to a method of wireless communication performed by a UE.
  • the method may include receiving, from a base station, an indication to multiplex a deferred HARQ feedback for an SPS downlink communication with a PUSCH communication.
  • the method may include transmitting, to the base station, the deferred HARQ feedback for the SPS downlink communication multiplexed with the PUSCH communication.
  • Some aspects described herein relate to a method of wireless communication performed by a base station.
  • the method may include transmitting, to a UE, an indication to multiplex a deferred HARQ feedback for an SPS downlink communication with a PUSCH communication.
  • the method may include receiving, from the UE, the deferred HARQ feedback for the SPS downlink communication multiplexed with the PUSCH communication.
  • Some aspects described herein relate to a non-transitory computer-readable medium that stores a set of instructions for wireless communication by a UE.
  • the set of instructions when executed by one or more processors of the UE, may cause the UE to receive, from a base station, an indication to multiplex a deferred HARQ feedback for an SPS downlink communication with a PUSCH communication.
  • the set of instructions when executed by one or more processors of the UE, may cause the UE to transmit, to the base station, the deferred HARQ feedback for the SPS downlink communication multiplexed with the PUSCH communication.
  • Some aspects described herein relate to a non-transitory computer-readable medium that stores a set of instructions for wireless communication by a base station.
  • the set of instructions when executed by one or more processors of the base station, may cause the base station to transmit, to a UE, an indication to multiplex a deferred HARQ feedback for an SPS downlink communication with a PUSCH communication.
  • the set of instructions when executed by one or more processors of the base station, may cause the base station to receive, from the UE, the deferred HARQ feedback for the SPS downlink communication multiplexed with the PUSCH communication.
  • the apparatus may include means for receiving, from a base station, an indication to multiplex a deferred HARQ feedback for an SPS downlink communication with a PUSCH communication.
  • the apparatus may include means for transmitting, to the base station, the deferred HARQ feedback for the SPS downlink communication multiplexed with the PUSCH communication.
  • the apparatus may include means for transmitting, to a UE, an indication to multiplex a deferred HARQ feedback for an SPS downlink communication with a PUSCH communication.
  • the apparatus may include means for receiving, from the UE, the deferred HARQ feedback for the SPS downlink communication multiplexed with the PUSCH communication.
  • 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.
  • aspects are described in the present disclosure by illustration to some examples, those skilled in the art will understand that such aspects may be implemented in many different arrangements and scenarios.
  • Techniques described herein may be implemented using different platform types, devices, systems, shapes, sizes, and/or packaging arrangements.
  • some aspects may be implemented via integrated chip embodiments or other non-modulecomponent based devices (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail/purchasing devices, medical devices, and/or artificial intelligence devices).
  • Aspects may be implemented in chip-level components, modular components, non-modular components, non-chip-level components, device-level components, and/or system-level components.
  • Devices incorporating described aspects and features may include additional components and features for implementation and practice of claimed and described aspects.
  • transmission and reception of wireless signals may include one or more components for analog and digital purposes (e.g., hardware components including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders, and/or summers).
  • RF radio frequency
  • aspects described herein may be practiced in a wide variety of devices, components, systems, distributed arrangements, and/or end-user devices of varying size, shape, and constitution.
  • Fig. 1 is a diagram illustrating an example of a wireless network, in accordance with the present disclosure.
  • Fig. 2 is a diagram illustrating an example of a base station in communication with a user equipment (UE) in a wireless network, in accordance with the present disclosure.
  • UE user equipment
  • Fig. 3 is a diagram illustrating an example of feedback message collision due to a slot format change, in accordance with the present disclosure.
  • Figs. 4-6 are diagrams illustrating examples associated with deferring semi-persistent scheduling (SPS) hybrid automatic repeat request (HARQ) feedback onto a physical uplink shared channel (PUSCH), in accordance with the present disclosure.
  • SPS semi-persistent scheduling
  • HARQ hybrid automatic repeat request
  • FIGs. 7-8 are diagrams illustrating example processes associated with deferring SPS HARQ feedback onto a PUSCH, in accordance with the present disclosure.
  • FIGs. 9-10 are diagrams of example apparatuses for wireless communication, in accordance with the present disclosure.
  • aspects may be described herein using terminology commonly associated with a 5G or New Radio (NR) radio access technology (RAT), aspects of the present disclosure can be applied to other RATs, such as a 3G RAT, a 4G RAT, and/or a RAT subsequent to 5G (e.g., 6G).
  • NR New Radio
  • Fig. 1 is a diagram illustrating an example of a wireless network 100, in accordance with the present disclosure.
  • the wireless network 100 may be or may include elements of a 5G (e.g., NR) network and/or a 4G (e.g., Long Term Evolution (LTE)) network, among other examples.
  • 5G e.g., NR
  • 4G e.g., Long Term Evolution (LTE) network
  • the wireless network 100 may include one or more base stations 110 (shown as a BS 110a, a BS 110b, a BS 110c, and a BS 1 lOd), a user equipment (UE) 120 or multiple UEs 120 (shown as a UE 120a, a UE 120b, a UE 120c, a UE 120d, and a UE 120e), and/or other network entities.
  • a base station 110 is an entity that communicates with UEs 120.
  • a base station 110 may include, for example, an NR base station, an LTE base station, a Node B, an eNB (e.g., in 4G), a gNB (e.g., in 5G), an access point, and/or a transmission reception point (TRP).
  • Each base station 110 may provide communication coverage for a particular geographic area.
  • the term “cell” can refer to a coverage area of a base station 110 and/or a base station subsystem serving this coverage area, depending on the context in which the term is used.
  • a base station 110 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 120 with service subscriptions.
  • a pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs 120 with service subscription.
  • a femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by UEs 120 having association with the femto cell (e.g., UEs 120 in a closed subscriber group (CSG)).
  • CSG closed subscriber group
  • a base station 110 for a macro cell may be referred to as a macro base station.
  • a base station 110 for a pico cell may be referred to as a pico base station.
  • a base station 110 for a femto cell may be referred to as a femto base station or an in-home base station.
  • the BS 110a may be a macro base station for a macro cell 102a
  • the BS 110b may be a pico base station for a pico cell 102b
  • the BS 110c may be a femto base station for a femto cell 102c.
  • a base station may support one or multiple (e.g., three) cells.
  • a cell may not necessarily be stationary, and the geographic area of the cell may move according to the location of a base station 110 that is mobile (e.g., a mobile base station).
  • the base stations 110 may be interconnected to one another and/or to one or more other base stations 110 or network nodes (not shown) in the wireless network 100 through various types of backhaul interfaces, such as a direct physical connection or a virtual network, using any suitable transport network.
  • the wireless network 100 may include one or more relay stations.
  • a relay station is an entity that can receive a transmission of data from an upstream station (e.g., a base station 110 or a UE 120) and send a transmission of the data to a downstream station (e.g., a UE 120 or a base station 110).
  • a relay station may be a UE 120 that can relay transmissions for other UEs 120.
  • the BS 1 lOd e.g., a relay base station
  • the BS 110a e.g., a macro base station
  • the UE 120d in order to facilitate communication between the BS 110a and the UE 120d.
  • a base station 110 that relays communications may be referred to as a relay station, a relay base station, a relay, or the like.
  • the wireless network 100 may be a heterogeneous network that includes base stations 110 of different types, such as macro base stations, pico base stations, femto base stations, relay base stations, or the like. These different types of base stations 110 may have different transmit power levels, different coverage areas, and/or different impacts on interference in the wireless network 100. For example, macro base stations may have a high transmit power level (e.g., 5 to 40 watts) whereas pico base stations, femto base stations, and relay base stations may have lower transmit power levels (e.g., 0. 1 to 2 watts).
  • a network controller 130 may couple to or communicate with a set of base stations 110 and may provide coordination and control for these base stations 110.
  • the network controller 130 may communicate with the base stations 110 via a backhaul communication link.
  • the base stations 110 may communicate with one another directly or indirectly via a wireless or wireline backhaul communication link.
  • the UEs 120 may be dispersed throughout the wireless network 100, and each UE 120 may be stationary or mobile.
  • a UE 120 may include, for example, an access terminal, a terminal, a mobile station, and/or a subscriber unit.
  • a UE 120 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, a biometric device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring or a smart bracelet)), an entertainment device (e.g., a music device, a video device, and/or a satellite radio), a vehicular component or sensor,
  • Some UEs 120 may be considered machine-type communication (MTC) or evolved or enhanced machine-type communication (eMTC) UEs.
  • An MTC UE and/or an eMTC UE may include, for example, a robot, a drone, a remote device, a sensor, a meter, a monitor, and/or a location tag, that may communicate with a base station, another device (e.g., a remote device), or some other entity.
  • Some UEs 120 may be considered Intemet-of-Things (loT) devices, and/or may be implemented as NB-IoT (narrowband loT) devices.
  • Some UEs 120 may be considered a Customer Premises Equipment.
  • a UE 120 may be included inside a housing that houses components of the UE 120, such as processor components and/or memory components.
  • 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, and/or electrically coupled.
  • any number of wireless networks 100 may be deployed in a given geographic area.
  • Each wireless network 100 may support a particular RAT and may operate on one or more frequencies.
  • a RAT may be referred to as a radio technology, an air interface, or the like.
  • a frequency may be referred to as a carrier, a frequency channel, 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, or a vehicle-to-pedestrian (V2P) protocol), and/or a mesh network.
  • V2X vehicle-to-everything
  • a UE 120 may perform scheduling operations, resource selection operations, and/or other operations described elsewhere herein as being performed by the base station 110.
  • Devices of the wireless network 100 may communicate using the electromagnetic spectrum, which may be subdivided by frequency or wavelength into various classes, bands, channels, or the like. For example, devices of the wireless network 100 may communicate using one or more operating bands.
  • 5G NR two initial operating bands have been identified as frequency range designations FR1 (410 MHz - 7.125 GHz) and FR2 (24.25 GHz - 52.6 GHz). It should be understood that although a portion of FR1 is greater than 6 GHz, FR1 is often referred to (interchangeably) as a “Sub-6 GHz” band in various documents and articles.
  • FR2 which is often referred to (interchangeably) as a “millimeter wave” band in documents and articles, despite being different from the extremely high frequency (EHF) band (30 GHz - 300 GHz) which is identified by the International Telecommunications Union (ITU) as a “millimeter wave” band.
  • EHF extremely high frequency
  • ITU International Telecommunications Union
  • FR3 7. 125 GHz - 24.25 GHz
  • FR3 7. 125 GHz - 24.25 GHz
  • Frequency bands falling within FR3 may inherit FR1 characteristics and/or FR2 characteristics, and thus may effectively extend features of FR1 and/or FR2 into mid-band frequencies.
  • higher frequency bands are currently being explored to extend 5G NR operation beyond 52.6 GHz.
  • FR4a or FR4-1 52.6 GHz - 71 GHz
  • FR4 52.6 GHz - 114.25 GHz
  • FR5 114.25 GHz - 300 GHz.
  • Each of these higher frequency bands falls within the EHF band.
  • sub-6 GHz may broadly represent frequencies that may be less than 6 GHz, may be within FR1, or may include mid-band frequencies.
  • millimeter wave may broadly represent frequencies that may include mid-band frequencies, may be within FR2, FR4, FR4-a or FR4-1, and/or FR5, or may be within the EHF band.
  • frequencies included in these operating bands may be modified, and techniques described herein are applicable to those modified frequency ranges.
  • the UE 120 may include a communication manager 140.
  • the communication manager 140 may receive, from a base station, an indication to multiplex a deferred hybrid automatic repeat request (HARQ) feedback for a semi-persistent scheduling (SPS) downlink communication with a physical uplink shared channel (PUSCH) communication; and transmit, to the base station, the deferred HARQ feedback for the SPS downlink communication multiplexed with the PUSCH communication.
  • HARQ hybrid automatic repeat request
  • SPS semi-persistent scheduling
  • PUSCH physical uplink shared channel
  • the communication manager 140 may perform one or more other operations described herein.
  • the base station 110 may include a communication manager 150.
  • the communication manager 150 may transmit, to a UE, an indication to multiplex a deferred HARQ feedback for an SPS downlink communication with a PUSCH communication; and receive, from the UE, the deferred HARQ feedback for the SPS downlink communication multiplexed with the PUSCH communication. Additionally, or alternatively, the communication manager 150 may perform one or more other operations described herein.
  • Fig. 1 is provided as an example. Other examples may differ from what is described with regard to Fig. 1.
  • Fig. 2 is a diagram illustrating an example 200 of a base station 110 in communication with a UE 120 in a wireless network 100, in accordance with the present disclosure.
  • the base station 110 may be equipped with a set of antennas 234a through 234t, such as T antennas (T> 1).
  • the UE 120 may be equipped with a set of antennas 252a through 252r, such as R antennas (R > 1).
  • a transmit processor 220 may receive data, from a data source 212, intended for the UE 120 (or a set of UEs 120).
  • the transmit processor 220 may select one or more modulation and coding schemes (MCSs) for the UE 120 based at least in part on one or more channel quality indicators (CQIs) received from that UE 120.
  • MCSs modulation and coding schemes
  • CQIs channel quality indicators
  • the base station 110 may process (e.g., encode and modulate) the data for the UE 120 based at least in part on the MCS(s) selected for the UE 120 and may provide data symbols for the UE 120.
  • the transmit processor 220 may process system information (e.g., for semi-static resource partitioning information (SRPI)) and control information (e.g., CQI requests, grants, and/or upper layer signaling) and provide overhead symbols and control symbols.
  • the transmit processor 220 may generate reference symbols for reference signals (e.g., a cell-specific reference signal (CRS) or a demodulation reference signal (DMRS)) and synchronization signals (e.g., a primary synchronization signal (PSS) or a secondary synchronization signal (SSS)).
  • reference signals e.g., a cell-specific reference signal (CRS) or a demodulation reference signal (DMRS)
  • synchronization signals e.g., a primary synchronization signal (PSS) or a 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 a set of output symbol streams (e.g., T output symbol streams) to a corresponding set of modems 232 (e.g., T modems), shown as modems 232a through 232t.
  • each output symbol stream may be provided to a modulator component (shown as MOD) of a modem 232.
  • Each modem 232 may use a respective modulator component to process a respective output symbol stream (e.g., for OFDM) to obtain an output sample stream.
  • Each modem 232 may further use a respective modulator component to process (e.g., convert to analog, amplify, filter, and/or upconvert) the output sample stream to obtain a downlink signal.
  • the modems 232a through 232t may transmit a set of downlink signals (e.g., T downlink signals) via a corresponding set of antennas 234 (e.g., T antennas), shown as antennas 234a through 234t.
  • a set of antennas 252 may receive the downlink signals from the base station 110 and/or other base stations 110 and may provide a set of received signals (e.g., R received signals) to a set of modems 254 (e.g., R modems), shown as modems 254a through 254r.
  • R received signals e.g., R received signals
  • each received signal may be provided to a demodulator component (shown as DEMOD) of a modem 254.
  • DEMOD demodulator component
  • Each modem 254 may use a respective demodulator component to condition (e.g., filter, amplify, downconvert, and/or digitize) a received signal to obtain input samples.
  • Each modem 254 may use a demodulator component to further process the input samples (e.g., for OFDM) to obtain received symbols.
  • a MIMO detector 256 may obtain received symbols from the modems 254, may perform MIMO detection on the received symbols if applicable, and may provide detected symbols.
  • a receive processor 258 may process (e.g., demodulate and decode) the detected symbols, may provide decoded data for the UE 120 to a data sink 260, and may provide decoded control information and system information to a controller/processor 280.
  • controller/processor may refer to one or more controllers, one or more processors, or a combination thereof.
  • a channel processor may determine a reference signal received power (RSRP) parameter, a received signal strength indicator (RSSI) parameter, a reference signal received quality (RSRQ) parameter, and/or a CQI parameter, among other examples.
  • RSRP reference signal received power
  • RSSI received signal strength indicator
  • RSSRQ reference signal received quality
  • CQI CQI parameter
  • the network controller 130 may include a communication unit 294, a controller/processor 290, and a memory 292.
  • the network controller 130 may include, for example, one or more devices in a core network.
  • the network controller 130 may communicate with the base station 110 via the communication unit 294.
  • One or more antennas may include, or may be included within, one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, and/or one or more antenna arrays, among other examples.
  • An antenna panel, an antenna group, a set of antenna elements, and/or an antenna array may include one or more antenna elements (within a single housing or multiple housings), a set of coplanar antenna elements, a set of non-coplanar antenna elements, and/or one or more antenna elements coupled to one or more transmission and/or reception components, such as one or more components of Fig. 2.
  • a transmit processor 264 may receive and process data from a data source 262 and control information (e.g., for reports that include RSRP, RSSI, RSRQ, and/or CQI) from the controller/processor 280.
  • the transmit processor 264 may generate reference symbols for one or more reference signals.
  • the symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266 if applicable, further processed by the modems 254 (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to the base station 110.
  • the modem 254 of the UE 120 may include a modulator and a demodulator.
  • the UE 120 includes a transceiver.
  • the transceiver may include any combination of the antenna(s) 252, the modem(s) 254, the MIMO detector 256, the receive processor 258, the transmit processor 264, and/or the TX MIMO processor 266.
  • the transceiver may be used by a processor (e.g., the controller/processor 280) and the memory 282 to perform aspects of any of the methods described herein (e.g., with reference to Figs. 4-10).
  • the uplink signals from UE 120 and/or other UEs may be received by the antennas 234, processed by the modem 232 (e.g., a demodulator component, shown as DEMOD, of the modem 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 the UE 120.
  • the receive processor 238 may provide the decoded data to a data sink 239 and provide the decoded control information to the controller/processor 240.
  • the base station 110 may include a communication unit 244 and may communicate with the network controller 130 via the communication unit 244.
  • the base station 110 may include a scheduler 246 to schedule one or more UEs 120 for downlink and/or uplink communications.
  • the modem 232 of the base station 110 may include a modulator and a demodulator.
  • the base station 110 includes a transceiver.
  • the transceiver may include any combination of the antenna(s) 234, the modem(s) 232, the MIMO detector 236, the receive processor 238, the transmit processor 220, and/or the TX MIMO processor 230.
  • the transceiver may be used by a processor (e.g., the controller/processor 240) and the memory 242 to perform aspects of any of the methods described herein (e.g., with reference to Figs. 4-10).
  • the controller/processor 240 of the base station 110, the controller/processor 280 of the UE 120, and/or any other component(s) of Fig. 2 may perform one or more techniques associated with deferring SPS HARQ feedback onto a PUSCH, as described in more detail elsewhere herein.
  • the controller/processor 240 of the base station 110, the controller/processor 280 of the UE 120, and/or any other component(s) of Fig. 2 may perform or direct operations of, for example, process 700 of Fig. 7, process 800 of Fig. 8, and/or other processes as described herein.
  • the memory 242 and the memory 282 may store data and program codes for the base station 110 and the UE 120, respectively.
  • the memory 242 and/or the memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code and/or program code) for wireless communication.
  • the one or more instructions when executed (e.g., directly, or after compiling, converting, and/or interpreting) by one or more processors of the base station 110 and/or the UE 120, may cause the one or more processors, the UE 120, and/or the base station 110 to perform or direct operations of, for example, process 700 of Fig. 7, process 800 of Fig. 8, and/or other processes as described herein.
  • executing instructions may include running the instructions, converting the instructions, compiling the instructions, and/or interpreting the instructions, among other examples.
  • the UE 120 includes means for receiving, from a base station, an indication to multiplex a deferred HARQ feedback for an SPS downlink communication with a PUSCH communication; and/or means for transmitting, to the base station, the deferred HARQ feedback for the SPS downlink communication multiplexed with the PUSCH communication.
  • the means for the UE 120 to perform operations described herein may include, for example, one or more of communication manager 140, antenna 252, modem 254, MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, controller/processor 280, or memory 282.
  • the base station includes means for transmitting, to a UE, an indication to multiplex a deferred HARQ feedback for an SPS downlink communication with a PUSCH communication; and/or means for receiving, from the UE, the deferred HARQ feedback for the SPS downlink communication multiplexed with the PUSCH communication.
  • the means for the base station to perform operations described herein may include, for example, one or more of communication manager 150, transmit processor 220, TX MIMO processor 230, modem 232, antenna 234, MIMO detector 236, receive processor 238, controller/processor 240, memory 242, or scheduler 246.
  • Fig. 2 While blocks in Fig. 2 are illustrated as distinct components, the functions described above with respect to the blocks may be implemented in a single hardware, software, or combination component or in various combinations of components. For example, the functions described with respect to the transmit processor 264, the receive processor 258, and/or the TX MIMO processor 266 may be performed by or under the control of the controller/processor 280.
  • Fig. 2 is provided as an example. Other examples may differ from what is described with regard to Fig. 2.
  • Deployment of communication systems may be arranged in multiple manners with various components or constituent parts.
  • a network node, a network entity, a mobility element of a network, a RAN node, a core network node, a network element, a base station, or a network equipment may be implemented in an aggregated or disaggregated architecture.
  • a base station such as a Node B (NB), an evolved NB (eNB), an NR BS, a 5G NB, an access point (AP), a TRP, or a cell, among other examples
  • a base station may be implemented as an aggregated base station (also known as a standalone base station or a monolithic base station) or a disaggregated base station.
  • Network entity or “network node” may refer to a disaggregated base station, or to one or more units of a disaggregated base station (such as one or more central units (CUs), one or more distributed units (DUs), one or more radio units (RUs), or a combination thereof).
  • CUs central units
  • DUs distributed units
  • RUs radio units
  • An aggregated base station may be configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node (e.g., within a single device or unit).
  • a disaggregated base station e.g., a disaggregated network node
  • a CU may be implemented within a network node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually distributed throughout one or multiple other network nodes.
  • the DUs may be implemented to communicate with one or more RUs.
  • Each of the CU, DU, and RU also can be implemented as virtual units, such as a virtual central unit (VCU), a virtual distributed unit (VDU), or a virtual radio unit (VRU), among other examples.
  • VCU virtual central unit
  • VDU virtual distributed unit
  • VRU virtual radio unit
  • Base station-type operation or network design may consider aggregation characteristics of base station functionality.
  • disaggregated base stations may be utilized in an IAB network, an open radio access network (O-RAN (such as the network configuration sponsored by the O-RAN Alliance)), or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN)) to facilitate scaling of communication systems by separating base station functionality into one or more units that can be individually deployed.
  • a disaggregated base station may include functionality implemented across two or more units at various physical locations, as well as functionality implemented for at least one unit virtually, which can enable flexibility in network design.
  • the various units of the disaggregated base station can be configured for wired or wireless communication with at least one other unit of the disaggregated base station.
  • Fig. 3 is a diagram illustrating an example 300 of a feedback message collision due to a slot format change, in accordance with the present disclosure.
  • Time-frequency resources in a radio access network may be partitioned into resource blocks (RBs), sometimes referred to as physical resource blocks (PRBs) or transport blocks.
  • An RB may include a set of subcarriers (e.g., 12 subcarriers) and a set of symbols (e.g., 14 symbols) that are scheduled by a base station (e.g., a gNB) as a unit.
  • an RB may include a set of subcarriers in a single time slot.
  • a single time-frequency resource included in a slot may be referred to as a resource element (RE).
  • An RE may include a single subcarrier (e.g., in frequency) and a single symbol (e.g., in time).
  • a symbol may be referred to as an OFDM symbol.
  • a radio frame may include 10 subframes (or time cycles), each with a length of 1 ms.
  • a subframe may have multiple slots, such as 8 slots (each with a length of 0. 125 ms).
  • the number of slots and slot length may vary depending on a numerology used for communications (e.g., a subcarrier spacing (SCS), a cyclic prefix format).
  • a slot may be configured with a link direction (e.g., downlink or uplink) for transmission. In some aspects, the link direction for a slot may be dynamically configured.
  • a UE may transmit or receive a communication at each symbol of a time slot.
  • Each symbol of the slot may have a communication mode, which may be an uplink communication mode (U), a downlink communication mode (D), a gap symbol (blank), or a flexible symbol (F).
  • a combination of communication modes for a slot may be referred to as a “slot format,” which may be identified with a slot format indicator (SFI). For example, 3 shows 8 slots of a first subframe, where each slot (in slot format 42) includes 3 D symbols, 3 F symbols, and 8 U symbols.
  • each slot in the next subframe includes 9 D symbols, 3 F symbols, and 2 U symbols. That is, there are now fewer U symbols in which the UE can transmit on a physical uplink control channel (PUCCH). This can cause a collision for a feedback message, such as an acknowledgement (ACK) or a negative acknowledgement (NACK), that is to be transmitted in a U symbol.
  • RRC radio resource control
  • IE SlotFormatCombinationsPerCell information element
  • PDCCH physical downlink control channel
  • the UE may receive a downlink communication on a physical downlink shared channel (PDSCH).
  • the downlink communication may be an SPS communication (e.g., an SPS PDSCH communication) with an SPS period of 1 ms.
  • a time period KI may be a duration between the receiving a PDSCH communication (e.g., the SPS PDSCH communication) and a scheduled time for transmitting feedback for the PDSCH communication.
  • the feedback for the PDSCH communication may be HARQ feedback, such as a HARQ acknowledgement (HARQ-ACK) or a HARQ negative acknowledgement (HARQ-NACK).
  • HARQ-ACK HARQ acknowledgement
  • HARQ-NACK HARQ negative acknowledgement
  • the KI value may be referred to as the PDSCH-to-HARQ feedback timing value.
  • the KI value for SPS communications may be indicated in an SPS configuration or in downlink control information (DCI) that activates the SPS communications associated with an SPS configuration.
  • DCI downlink control information
  • the UE may transmit a feedback message (e.g., ACK 302) in an available U symbol.
  • the UE may not be able to transmit a feedback message (e.g., ACK or NACK 304) at an expected U symbol. What was previously a U symbol in the first subframe is now a D symbol in the next subframe, and thus the feedback message, scheduled for a U symbol, collides with the D symbol.
  • the feedback message needs to be transmitted despite the initial collision, and the UE may defer the feedback message and attempt to transmit the feedback message in a first available PUCCH resource (e.g., a next available PUCCH resource after the collision between the feedback message (e.g., HARQ-ACK/NACK) for the SPS PDSCH communication and the D symbol).
  • a first available PUCCH resource e.g., a next available PUCCH resource after the collision between the feedback message (e.g., HARQ-ACK/NACK) for the SPS PDSCH communication and the D symbol.
  • the first available PUCCH resource may be in a first available U symbol 306 after the collision between the feedback message and the D symbol (e.g., KI + 7 symbols in Fig. 3).
  • Fig. 3 is provided as an example. Other examples may differ from what is described with regard to Fig. 3.
  • a UE may defer SPS HARQ feedback (e.g., HARQ feedback for an SPS communication) from an initial slot (or sub-slot) in which the SPS HARQ feedback is scheduled if there is a collision between the SPS HARQ feedback and a downlink symbol and if a PUCCH resource associated with the SPS HARQ feedback (e.g., according to a list of PUCCH resources for SPS HARQ feedback configured for the UE) is not available in the initial slot.
  • SPS HARQ feedback e.g., HARQ feedback for an SPS communication
  • another uplink resource e.g., another PUCCH resource or a resource allocated for a PUS CH communication
  • the UE may defer the SPS HARQ feedback to another slot instead of using the other uplink resource. This may result in additional delay in transmitting the deferred SPS HARQ feedback.
  • a slot format change may result in multiple UEs deferring SPS HARQ feedback to the same first available PUCCH resource. This may cause collisions of the deferred SPS HARQ feedback from multiple UEs on the first available PUCCH resource, which may reduce the reliability of the deferred HARQ feedback.
  • Some techniques and apparatuses described herein enable a UE to receive, from a base station, an indication to multiplex a deferred HARQ feedback for an SPS downlink communication with a PUSCH communication.
  • the UE may defer HARQ feedback for the SPS downlink communication in connection with a collision between the HARQ feedback and a downlink symbol, and the UE may transmit, to the base station, the deferred HARQ feedback for the SPS communication multiplexed with the PUSCH communication.
  • the UE may multiplex deferred SPS HARQ feedback with a PUSCH communication scheduled in the slot in which the SPS HARQ feedback collides with a downlink symbol, which may reduce the delay in transmitting the deferred SPS HARQ feedback as compared with deferring the SPS HARQ feedback to an available PUCCH resource in another slot.
  • multiplexing the deferred SPS HARQ feedback with the PUSCH communication may result in reduced collisions between transmissions of deferred HARQ feedback from different UEs on a first available PUCCH resource, which may increase the reliability of the deferred HARQ feedback transmissions.
  • Multiplexing the deferred SPS HARQ feedback with the PUSCH communication may also result in increased flexibility in allocating uplink resources (e.g., because the network may not need to reserve resources for attempts by the UE to find the first available PUCCH resource) and reduced UE power consumption due to the UE not having to find the first available PUCCH resource for transmitting the deferred SPS HARQ feedback.
  • Fig. 4 is a diagram illustrating an example 400 associated with deferring SPS HARQ feedback onto a PUSCH, in accordance with the present disclosure.
  • example 400 includes communication between a base station 110 and a UE 120.
  • the base station 110 and the UE 120 may be included in a wireless network, such as wireless network 100.
  • the base station 110 and the UE 120 may communicate via a wireless access link, which may include an uplink and a downlink.
  • the base station 110 may transmit, to the UE 120, an indication to multiplex deferred SPS HARQ feedback with a PUSCH communication.
  • the UE 120 may receive the indication transmitted by the base station 110.
  • the indication may be included in DCI transmitted (e.g., in a PDCCH communication) from the base station 110 to the UE 120.
  • DCI that schedules a PUSCH communication may indicate, to the UE 120, to multiplex a deferred HARQ feedback for an SPS communication with the PUSCH communication.
  • the DCI (e.g., DCI O x) that schedules a PUSCH communication may include an indication to multiplex a deferred HARQ feedback for an SPS communication with the PUSCH communication on the resource (e.g., time and frequency resource) allocated for the PUSCH communication in the DCI.
  • the base station 110 may transmit the indication in the DCI for a PUSCH communication based at least in part on a determination that the HARQ feedback for an SPS communication will collide with a downlink symbol.
  • the PUSCH may be a PUSCH to be transmitted by the UE 120 in the same slot as a slot in which the HARQ feedback for the SPS communication will collide with the downlink symbol.
  • the DCI may indicate a K2 value that is a time offset between reception of the DCI by the UE 120 and the scheduled resources for transmission of the PUSCH communication by the UE 120.
  • the K2 value may provide a PUSCH preparation time in which the UE 120 prepares to transmit the PUSCH communication.
  • the K2 may be greater than or equal to a minimum PUSCH preparation time associated with the SCS and a UE PUSCH timing capability of the UE 120.
  • the minimum PUSCH preparation time may be equal to 5 symbols (e.g., K2 > 5 symbols) for an SCS of 15 kHz
  • the minimum PUSCH preparation time may be equal to 36 symbols (e.g., K2 > 36 symbols) for an SCS of 120 kHz.
  • the base station 110 may transmit the DCI (e.g., DCI O x) that schedules the PUSCH communication in one or more slots prior to the slot in which the PUSCH communication is scheduled/transmitted.
  • the base station 110 may transmit the DCI (e.g., DCI O x) that schedules the PUSCH communication in the same slot as the slot in which the PUSCH communication is scheduled/transmitted.
  • DCI e.g., DCI O x
  • the base station 110 when transmitting the DCI, may be aware of a collision between a scheduled SPS HARQ feedback (e.g., a symbol in which HARQ feedback for an SPS downlink communication is scheduled to be transmitted by the UE 120) and a downlink symbol in the same slot as the DCI transmission and the scheduled PUSCH communication.
  • a scheduled SPS HARQ feedback e.g., a symbol in which HARQ feedback for an SPS downlink communication is scheduled to be transmitted by the UE 120
  • the base station 110 in a case in which the base station 110 transmits the DCI before the slot in which the PUSCH is scheduled/transmitted and the SPS HARQ collides with the downlink symbol, the base station 110, the base station 110, when transmitting the DCI, may be aware of an RRC dictated slot format change that will take effect 1, 2, or 3 slots later (e.g., up to 2 ms later). In this case, the base station 110 may determine that the slot format change will result in a collision between a scheduled SPS HARQ feedback and a downlink symbol.
  • the base station 110 when transmitting the DCI, may be aware of a slot format change indicated in an RRC message (e.g., an RRC reconfiguration) that will result in a collision between a scheduled SPS HARQ feedback and a downlink symbol in a slot in which the PUSCH is scheduled based at least in part on an RRC processing time (e.g., for processing the RRC message) being longer than the K2 value (e.g., the PUSCH processing time).
  • an RRC processing time e.g., for processing the RRC message
  • K2 value e.g., the PUSCH processing time
  • the base station 110 may be aware of scheduling decisions for a next A slots when transmitting the DCI, and the base station 110 may determine, based at least in part on the scheduling decisions for the next N slots, that an upcoming slot format change via an SFI will result in a collision between a scheduled SPS HARQ feedback and a downlink symbol in the slot in which the PUSCH communication is scheduled/transmitted.
  • the indication to multiplex a deferred HARQ feedback for an SPS communication with the PUSCH communication scheduled by the DCI may be included in a downlink assignment index (DAI) field of the DCI.
  • the DAI field may include multiple bits, and 1 bit of the DAI field may be used for the indication to multiplex the deferred SPS HARQ with the PUSCH communication, with the remaining bits used to indicate the DAI for the PUSCH communication.
  • the DAI field includes 4 bits
  • the first 3 bits of the DAI field may be used to indicate the DAI
  • the last bit of the DAI field may indicate whether to multiplex a deferred HARQ feedback with the PUSCH communication.
  • the value of the one DAI bit that provides the indication (e.g., the last bit of the DAI field) may be set to 1 to provide an indication to multiplex a type 1 HARQ codebook with the PUSCH communication.
  • the DCI may include a dedicated field for indicating whether to multiplex a deferred HARQ feedback for an SPS communication with the PUSCH communication scheduled by the DCI.
  • the DCI e.g., DCI O x
  • the DCI field associated with the indication may be set to a first value (e.g., 0) to deactivate the multiplexing of deferred SPS HARQ feedback with the PUSCH communication or a second value (e.g., 1) to activate the multiplexing of deferred SPS HARQ feedback with the PUSCH communication.
  • the base station 110 may transmit the indication to multiplex the deferred SPS HARQ feedback with the PUSCH communication based at least in part on a determination that the PUSCH communication is scheduled before a next available PUCCH resource after the collision (e.g., a next available PUCCH resource after the initial symbol at which the HARQ feedback was scheduled).
  • the base station 110 may activate the multiplexing of the deferred SPS HARQ feedback and the PUSCH communication in a case in which the PUSCH communication is scheduled prior to the next available PUCCH resource, and the base station 110 may deactivate the multiplexing of the deferred SPS HARQ feedback and the PUSCH communication in a case in which the PUSCH communication is scheduled after the next available PUCCH communication.
  • the base station 110 may transmit the indication to multiplex the deferred SPS HARQ feedback with the PUSCH communication based at least in part on a determination that transmission (by the UE 120) of the deferred HARQ feedback on the next available PUCCH resource after the collision (e.g., after the initial symbol at which the HARQ feedback was scheduled) will result in a collision (e.g., with one or more uplink transmissions from one or more other UEs) on the next available PUCCH resource.
  • the base station 110 may activate the multiplexing of the deferred SPS HARQ feedback with the PUSCH communication to reduce and/or avoid collisions on the next available PUCCH resource.
  • the base station 110 may indicate, to the UE 120, to multiplex the deferred SPS HARQ feedback with a PUSCH communication scheduled in the same slot as the collision.
  • the base station 110 may indicate, to the UE 120, to multiplex the deferred SPS HARQ feedback with a PUSCH communication scheduled in a different slot from the collision.
  • the base station 110 may provide the indication in DCI scheduling a PUSCH communication in a target slot other than the slot in which the collision occurs to indicate, to the UE 120, to multiplex the deferred SPS HARQ feedback onto the PUSCH communication in the target slot.
  • the base station 110 may transmit the indication to multiplex the deferred SPS HARQ feedback with the PUSCH communication regardless of whether the PUSCH communication is scheduled before or after the next available PUCCH resource after the collision.
  • the base station 110 may activate the multiplexing of the deferred HARQ feedback and the PUSCH communication even if the next available PUCCH resource is earlier than the scheduled PUSCH communication.
  • the base station 110 may activate multiplexing of the deferred SPS HARQ feedback with a PUSCH communication based at least in part on a determination that the PUSCH communication is to be scheduled in the same slot (or one or more slots subsequent to) a collision between the SPS HARQ feedback and a downlink symbol.
  • the base station 110 may schedule a PUSCH communication in the same slot as (or one or more slots subsequent to) the collision, and the base station 110 may indicate, to the UE 120 (e.g., in the DCI that schedules the PUSCH communication), to multiplex deferred SPS HARQ with the PUSCH communication.
  • the indication to multiplex deferred HARQ feedback for an SPS communication with a PUSCH communication may be included in an RRC configuration transmitted from the base station 110 to the UE 120.
  • the indication in the RRC configuration may configure the UE 120 to always try to multiplex deferred SPS HARQ feedback onto an earliest scheduled PUSCH communication after a collision between the SPS HARQ feedback and a downlink symbol.
  • the indication in the RRC configuration may configure the UE 120 to multiplex the deferred HARQ feedback onto an earliest scheduled PUSCH communication after a collision between the SPS HARQ feedback and a downlink symbol if the earliest scheduled PUSCH communication is scheduled before a next available PUCCH resource after the collision.
  • the UE 120 may transmit the deferred SPS HARQ feedback on the next available PUCCH resource if the next available PUCCH resource is before the earliest scheduled PUSCH communication after the collision.
  • the DCI that schedules the earliest scheduled PUSCH communication after the collision may indicate, to the UE 120, to multiplex the deferred SPS HARQ feedback onto the earliest scheduled PUSCH communication after the collision by scheduling the earliest scheduled PUSCH communication after the collision before the next available PUCCH resource after the collision.
  • the base station 110 may consider the multiplexed SPS HARQ payload when scheduling PUSCH communications.
  • the indication in the RRC configuration may configure the UE 120 to multiplex deferred SPS HARQ feedback onto configured grant (CG) PUSCH communications (e.g., using periodic uplink resources configured for CG PUSCH communications) in addition to, or instead of, PUSCH communications scheduled via uplink grants (e.g., via DCI O x).
  • CG configured grant
  • the indication in the RRC may apply to all PUSCH communications (e.g., including CG PUSCH communications and PUSCH communications scheduled via uplink grants), or the base station 110 may transmit separate indications for multiplexing with PUSCH communications scheduled via uplink grants and for multiplexing with CG PUSCH communications.
  • the indication to multiplex deferred HARQ feedback for an SPS communication with a PUSCH communication may be included in a medium access control (MAC) control element (MAC-CE) transmitted from the base station 110 to the UE 120.
  • the base station 110 may transmit the MAC-CE including the indication to activate multiplexing of deferred SPS HARQ feedback with a PUSCH communication.
  • the MAC-CE may activate multiplexing of deferred SPS HARQ feedback with CG PUSCH communications, in addition to, or instead of, PUSCH communications scheduled via uplink grants.
  • the indication in the MAC-CE may apply to all PUSCH communications (e.g., including CG PUSCH communications and PUSCH communications scheduled via uplink grants), or the base station 110 may transmit separate indications for multiplexing with PUSCH communications scheduled via uplink grants and for multiplexing with CG PUSCH communications.
  • the base station 110 may transmit, to the UE 120, an SPS downlink communication.
  • the SPS downlink communication may be an SPS PDSCH communication.
  • the base station 110 may transmit the SPS downlink communication to the UE 120 in a periodically occurring SPS occasion configured for the UE 120 in an SPS configuration.
  • the UE 120 may receive the SPS downlink communication transmitted by the base station 110.
  • the UE 120 may defer the HARQ feedback for the SPS downlink communication.
  • the UE 120 may defer the HARQ feedback for the SPS downlink communication based at least in part on detecting a collision between the HARQ feedback for the SPS downlink communication and a downlink symbol in a slot.
  • the UE 120 may determine an initial symbol in which the HARQ feedback for the SPS downlink communication is scheduled/configured to be transmitted based at least in part on the KI value (e.g., the PDSCH-to-HARQ feedback timing value) configured for the UE 120 for SPS downlink communication.
  • the KI value e.g., the PDSCH-to-HARQ feedback timing value
  • the UE 120 may then determine whether there is a collision between the initial symbol associated with the HARQ feedback for the SPS downlink communication and a downlink symbol configured according to a slot format of the slot. For example, a collision between the SPS HARQ feedback and a downlink symbol may be caused by a slot format change (e.g., indicated in an RRC message or via an SFI).
  • a slot format change e.g., indicated in an RRC message or via an SFI.
  • the UE 120 may determine the HARQ feedback (e.g., HARQ-ACK or HARQ-NACK) for the SPS downlink communication. The UE 120 may then defer the HARQ feedback for the SPS downlink communication by storing the HARQ feedback in a buffer to be transmitted in a later symbol, sub-slot, or slot.
  • the SPS HARQ feedback that is deferred from the initial symbol associated with the SPS HARQ feedback may be referred to as “deferred SPS HARQ feedback” and/or “deferred HARQ feedback for the SPS downlink communication . ”
  • the UE 120 may transmit, to the base station 110, the deferred SPS HARQ feedback (e.g., the deferred HARQ feedback for the SPS downlink communication) multiplexed with a PUSCH communication.
  • the base station 110 may receive, from the UE 120, the deferred HARQ feedback multiplexed with the PUSCH communication.
  • the UE 120 may multiplex the deferred HARQ feedback with the PUSCH communication on a resource associated with the PUSCH communication, and transmit the multiplexed deferred HARQ feedback and PUSCH communication to the base station 110 on the resource associated with PUSCH communication.
  • the DCI that schedules the PUSCH communication may include the indication to multiplex the deferred SPS HARQ feedback with the PUSCH communication.
  • the UE 120 may transmit the deferred SPS HARQ feedback multiplexed with the PUSCH communication on the resource allocated for the PUSCH communication in the DCI.
  • the UE 120 may multiplex the deferred SPS HARQ feedback with a PUSCH communication in the same slot as the collision (e.g., in the same slot as the initial symbol from which the deferred SPS feedback is deferred). In some aspects, based at least in part on the indication in the DCI, the UE 120 may multiplex the deferred SPS HARQ feedback with a PUSCH communication in a different slot from the collision (e.g., in a different slot from the initial symbol from which the deferred SPS feedback is deferred).
  • the UE 120 may multiplex the deferred SPS HARQ feedback on a PUSCH communication that is scheduled after (e.g., in a later slot, sub-slot, or symbol than) a next available PUCCH resource after the collision (e.g., after the initial symbol from which the deferred SPS HARQ feedback is deferred). In this case, the UE 120 may multiplex the deferred SPS HARQ feedback on the PUSCH communication scheduled by the DCI, even though the next available PUCCH resource after the collision is earlier than the scheduled PUSCH communication.
  • the PUSCH communication may be an earliest scheduled PUSCH communication after the collision (e.g., after the initial symbol from which the deferred SPS HARQ feedback is deferred). For example, based at least in part on receiving the indication (e.g., in an RRC configuration or a MAC-CE), the UE 120 may search for the earliest scheduled PUSCH communication after the collision, and the UE 120 may multiplex the deferred SPS HARQ feedback with the earliest scheduled PUSCH communication after the collision.
  • the indication e.g., in an RRC configuration or a MAC-CE
  • the UE 120 may transmit the deferred SPS HARQ feedback with the PUSCH communication (e.g., the earliest scheduled PUSCH communication after the collision) based at least in part on a determination that the PUSCH communication is scheduled before a next available PUCCH resource after the collision. In this case, by scheduling the PUSCH communication before the next available PUCCH resource after the collision, the DCI that schedules the PUSCH communication indicates to the UE 120 to multiplex the deferred SPS HARQ feedback with the PUSCH communication.
  • the PUSCH communication e.g., the earliest scheduled PUSCH communication after the collision
  • the UE 120 may transmit the deferred SPS HARQ feedback using the next available PUCCH resource after the collision if the next available PUCCH resource is before the PUSCH communication (e.g., the earliest scheduled PUSCH communication).
  • the UE 120 may multiplex the deferred SPS HARQ feedback with a CG PUSCH communication. For example, the UE 120 may transmit the deferred SPS HARQ multiplexed with a CG PUSCH communication on a resource configured for the CG PUSCH communication based at least in part on a determination that the CG PUSCH communication is the earliest scheduled PUSCH communication after the collision. In some aspects, the UE 120 may adjust beta factors for the CG PUSCH communication in order to multiplex the deferred SPS HARQ feedback on the resource configured for the CG PUSCH communication.
  • the UE 120 may receive, from the base station 110, an indication to multiplex a deferred HARQ feedback for an SPS downlink communication with a PUSCH communication.
  • the UE 120 may defer HARQ feedback for the SPS downlink communication in connection with a collision between the HARQ feedback and a downlink symbol, and the UE may transmit, to the base station, the deferred HARQ feedback for the SPS communication multiplexed with the PUSCH communication.
  • the UE 120 may multiplex deferred SPS HARQ feedback with a PUSCH communication scheduled in the slot in which the SPS HARQ feedback collides with a downlink symbol, which may reduce the delay in transmitting the deferred SPS HARQ feedback as compared with deferring the SPS HARQ feedback to an available PUCCH resource in another slot. Furthermore, multiplexing the deferred SPS HARQ feedback with the PUSCH communication may result in reduced collisions between transmissions of deferred HARQ feedback from different UEs on a first available PUCCH resource, which may increase the reliability of the deferred HARQ feedback transmissions. Multiplexing the deferred SPS HARQ feedback with the PUSCH communication may also result in increased flexibility in allocating uplink resources and in reduced UE power consumption.
  • Fig. 4 is provided as an example. Other examples may differ from what is described with respect to Fig. 4.
  • Fig. 5 is a diagram illustrating an example 500 associated with deferring SPS HARQ feedback onto a PUSCH, in accordance with the present disclosure.
  • example 500 shows 8 slots of a first subframe, where each slot (in slot format 42) includes 3 D symbols, 3 F symbols, and 8 U symbols. After a slot format change, each slot in the next subframe (for slot format 33) includes 9 D symbols, 3 F symbols, and 2 U symbols.
  • the base station may transmit, to the UE, an SPS downlink communication (e.g., an SPS PDSCH communication).
  • the SPS downlink communication may have an SPS period of 1 ms.
  • HARQ feedback e.g., ACK 502
  • the UE may not be able to transmit HARQ feedback (e.g., ACK or NACK 504) for the SPS downlink communication received in the next subframe.
  • HARQ feedback e.g., ACK or NACK 504
  • the UE may determine to defer the HARQ feedback for the SPS downlink communication based at least in part on the collision between the HARQ feedback and the D symbol.
  • the base station may transmit, to the UE, DCI (e.g., in a PDCCH communication) that schedules a PUSCH communication for the UE, and the DCI may include an indication to multiplex the deferred HARQ feedback for the SPS communication with the PUSCH communication scheduled by the DCI.
  • the DCI may indicate the time and frequency resources for the scheduled PUSCH communication.
  • the UE may multiplex the deferred HARQ feedback (e.g., ACK or NACK 504) with the PUSCH communication. For example, the UE may transmit, to the base station, the deferred HARQ ACK/NACK for the SPS communication multiplexed with the PUSCH communication on the resource allocated for the PUSCH communication.
  • the deferred HARQ feedback e.g., ACK or NACK 504
  • the UE may transmit, to the base station, the deferred HARQ ACK/NACK for the SPS communication multiplexed with the PUSCH communication on the resource allocated for the PUSCH communication.
  • the UE may multiplex the deferred HARQ feedback for the SPS communication with a PUSCH communication that is in the same slot as the collision (e.g., the same slot as the symbol from which the deferred HARQ feedback is deferred).
  • the PUSCH communication may be earlier than a first available PUCCH resource after the collision, which is in a subsequent slot in Fig. 5. This may reduce the delay in transmitting the deferred SPS HARQ feedback as compared with deferring the SPS HARQ feedback to the first available PUCCH resource in the subsequent slot.
  • multiplexing the deferred SPS HARQ feedback with the PUSCH communication may result in reduced collisions between transmissions of deferred HARQ feedback from different UEs on the first available PUCCH resource, which may increase the reliability of the deferred HARQ feedback transmissions.
  • Fig. 5 is provided as an example. Other examples may differ from what is described with respect to Fig. 5.
  • Fig. 6 is a diagram illustrating an example 600 associated with deferring SPS HARQ feedback onto a PUSCH, in accordance with the present disclosure.
  • example 600 shows 8 slots of a first subframe, where each slot (in slot format 42) includes 3 D symbols, 3 F symbols, and 8 U symbols. After a slot format change, each slot in the next subframe (for slot format 33) includes 9 D symbols, 3 F symbols, and 2 U symbols.
  • the base station may transmit, to the UE, an SPS downlink communication (e.g., an SPS PDSCH communication).
  • the SPS downlink communication may have an SPS period of 1 ms.
  • HARQ feedback e.g., ACK 602
  • the UE may not be able to transmit HARQ feedback (e.g., ACK or NACK 604) for the SPS downlink communication received in the next subframe.
  • HARQ feedback e.g., ACK or NACK 604
  • the UE may determine to defer the HARQ feedback for the SPS downlink communication based at least in part on the collision between the HARQ feedback and the D symbol.
  • the base station may transmit, to the UE, DCI (e.g., in a PDCCH communication) that schedules a PUSCH communication for the UE, and the DCI may include an indication to multiplex the deferred HARQ feedback for the SPS communication with the PUSCH communication scheduled by the DCI.
  • the DCI may indicate the time and frequency resources for the scheduled PUSCH communication.
  • the UE may multiplex the deferred HARQ feedback (e.g., ACK or NACK 604) with the PUSCH communication. For example, the UE may transmit, to the base station, the deferred HARQ ACK/NACK for the SPS communication multiplexed with the PUSCH communication on the resource allocated for the PUSCH communication.
  • the deferred HARQ feedback e.g., ACK or NACK 604
  • the UE may transmit, to the base station, the deferred HARQ ACK/NACK for the SPS communication multiplexed with the PUSCH communication on the resource allocated for the PUSCH communication.
  • the UE may multiplex the deferred HARQ feedback for the SPS communication with a PUSCH communication that is in a different slot from the collision (e.g., a different slot from the slot including the symbol from which the deferred HARQ feedback is deferred).
  • the PUSCH communication may be scheduled after (e.g., in a subsequent slot to) a first available PUCCH resource after the collision.
  • the UE may multiplex the deferred HARQ feedback for the SPS communication with the PUSCH communication scheduled by the DCI, even though the PUSCH communication is after the first available PUCCH resource after the collision. This may reduce collisions between transmissions of deferred HARQ feedback from different UEs on the first available PUCCH resource, which may increase the reliability of the deferred HARQ feedback transmissions.
  • Fig. 6 is provided as an example. Other examples may differ from what is described with respect to Fig. 6.
  • Fig. 7 is a diagram illustrating an example process 700 performed, for example, by a UE, in accordance with the present disclosure.
  • Example process 700 is an example where the UE (e.g., UE 120) performs operations associated with deferring SPS HARQ feedback onto a PUSCH.
  • the UE e.g., UE 120
  • process 700 may include receiving, from a base station, an indication to multiplex a deferred HARQ feedback for an SPS downlink communication with a PUSCH communication (block 710).
  • the UE e.g., using communication manager 140 and/or reception component 902, depicted in Fig. 9 may receive, from a base station, an indication to multiplex a deferred HARQ feedback for an SPS downlink communication with a PUSCH communication, as described above.
  • process 700 may include transmitting, to the base station, the deferred HARQ feedback for the SPS downlink communication multiplexed with the PUSCH communication (block 720).
  • the UE e.g., using communication manager 140 and/or transmission component 904, depicted in Fig. 9 may transmit, to the base station, the deferred HARQ feedback for the SPS downlink communication multiplexed with the PUSCH communication, as described above.
  • Process 700 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.
  • process 700 includes receiving the SPS downlink communication, and deferring HARQ feedback for the SPS downlink communication in connection with a collision between a symbol associated with the HARQ feedback for the SPS downlink communication and a configured downlink symbol, resulting in the deferred HARQ feedback for the SPS downlink communication.
  • receiving the indication to multiplex the deferred HARQ feedback for the SPS downlink communication with the PUSCH communication includes receiving DCI that schedules the PUSCH communication.
  • the DCI indicates to multiplex the deferred HARQ feedback for the SPS downlink communication based at least in part on scheduling the PUSCH communication before a next available PUCCH communication after a symbol from which the deferred HARQ feedback for the SPS downlink communication is deferred.
  • the indication is included in DCI that schedules the PUSCH communication.
  • the indication is included in a downlink assignment index field of the DCI.
  • the indication is included in the DCI in a dedicated field for indicating multiplexing of SPS HARQ feedback with the PUSCH communication.
  • transmitting the deferred HARQ feedback for the SPS downlink communication multiplexed with the PUSCH communication includes transmitting the deferred HARQ feedback for the SPS communication multiplexed with the PUSCH communication on a resource allocated for the PUSCH communication in the DCI.
  • the indication is included in an RRC configuration.
  • transmitting the deferred HARQ feedback for the SPS downlink communication multiplexed with the PUSCH communication includes multiplexing the deferred HARQ feedback for the SPS downlink communication with an earliest PUSCH communication after a symbol from which the deferred HARQ feedback for the SPS downlink communication is deferred.
  • the indication is included in a MAC-CE.
  • the PUSCH communication is scheduled after a next available PUCCH resource after a symbol from which the deferred HARQ feedback for the SPS downlink communication is deferred.
  • transmitting the deferred HARQ feedback for the SPS downlink communication multiplexed with the PUSCH communication includes transmitting the deferred HARQ feedback for the SPS downlink communication multiplexed with the PUSCH communication based at least in part on a determination that the PUSCH communication is scheduled before a next available PUCCH communication after a symbol from which the deferred HARQ feedback for the SPS downlink communication is deferred.
  • the PUSCH communication is a configured grant PUSCH communication.
  • transmitting the deferred HARQ feedback for the SPS downlink communication multiplexed with the PUSCH communication includes adjusting beta factors for the configured grant PUSCH communication to multiplex the deferred HARQ feedback for the SPS downlink communication with the configured grant PUSCH communication on a resource configured for the configured grant PUSCH communication.
  • process 700 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Fig. 7. Additionally, or alternatively, two or more of the blocks of process 700 may be performed in parallel.
  • Fig. 8 is a diagram illustrating an example process 800 performed, for example, by a base station, in accordance with the present disclosure.
  • Example process 800 is an example where the base station (e.g., base station 110) performs operations associated with deferring SPS HARQ feedback onto a PUSCH.
  • the base station e.g., base station 110
  • process 800 may include transmitting, to a UE, an indication to multiplex a deferred HARQ feedback for an SPS downlink communication with a PUSCH communication (block 810).
  • the base station e.g., using communication manager 150 and/or transmission component 1004, depicted in Fig. 10) may transmit, to a UE, an indication to multiplex a deferred HARQ feedback for an SPS downlink communication with a PUSCH communication, as described above.
  • process 800 may include receiving, from the UE, the deferred HARQ feedback for the SPS downlink communication multiplexed with the PUSCH communication (block 820).
  • the base station e.g., using communication manager 150 and/or reception component 1002, depicted in Fig. 10.
  • the base station may receive, from the UE, the deferred HARQ feedback for the SPS downlink communication multiplexed with the PUSCH communication, as described above.
  • Process 800 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.
  • transmitting the indication includes transmitting the indication to the UE based at least in part on a determination that a symbol associated with HARQ feedback for the SPS downlink communication will collide with a configured downlink symbol.
  • transmitting the indication further includes transmitting the indication to the UE based at least in part on a determination that transmission of the deferred HARQ feedback for the SPS downlink communication on a next available PUCCH resource after the symbol associated with the HARQ feedback for the SPS downlink communication will result in a collision on the next available PUCCH resource.
  • transmitting the indication further includes transmitting the indication to the UE based at least in part on a determination that the PUSCH communication is scheduled before a next available PUCCH resource after the symbol associated with the HARQ feedback for the SPS downlink communication.
  • process 800 includes transmitting, to the UE, the SPS downlink communication.
  • transmitting the indication includes transmitting DCI that schedules the PUSCH communication.
  • the DCI indicates to multiplex the deferred HARQ feedback for the SPS downlink communication based at least in part on scheduling the PUSCH communication before a next available PUCCH communication after a symbol from which the deferred HARQ feedback for the SPS downlink communication is deferred.
  • the indication is included in DCI that schedules the PUSCH communication.
  • the indication is included in a downlink assignment index field of the DCI.
  • the indication is included in the DCI in a dedicated field for indicating multiplexing of SPS HARQ feedback with the PUSCH communication.
  • receiving the deferred HARQ feedback for the SPS downlink communication multiplexed with the PUSCH communication includes receiving the deferred HARQ feedback for the SPS communication multiplexed with the PUSCH communication on a resource allocated for the PUSCH communication in the DCI.
  • the indication is included in an RRC configuration.
  • the indication is included in a MAC-CE.
  • the PUSCH communication is scheduled after a next available PUCCH resource after a symbol from which the deferred HARQ feedback for the SPS downlink communication is deferred.
  • the PUSCH communication is a configured grant PUSCH communication.
  • Fig. 8 shows example blocks of process 800, in some aspects, process 800 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Fig. 8. Additionally, or alternatively, two or more of the blocks of process 800 may be performed in parallel.
  • Fig. 9 is a diagram of an example apparatus 900 for wireless communication.
  • the apparatus 900 may be a UE, or a UE may include the apparatus 900.
  • the apparatus 900 includes a reception component 902 and a transmission component 904, which may be in communication with one another (for example, via one or more buses and/or one or more other components).
  • the apparatus 900 may communicate with another apparatus 906 (such as a UE, a base station, or another wireless communication device) using the reception component 902 and the transmission component 904.
  • the apparatus 900 may include the communication manager 140.
  • the communication manager 140 may include a deferring component 908.
  • the apparatus 900 may be configured to perform one or more operations described herein in connection with Figs. 4-6. Additionally, or alternatively, the apparatus 900 may be configured to perform one or more processes described herein, such as process 700 of Fig. 7, or a combination thereof.
  • the apparatus 900 and/or one or more components shown in Fig. 9 may include one or more components of the UE described in connection with Fig. 2. Additionally, or alternatively, one or more components shown in Fig. 9 may be implemented within one or more components described in connection with Fig. 2. Additionally, or alternatively, one or more components of the set of components may be implemented at least in part as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or a processor to perform the functions or operations of the component.
  • the reception component 902 may receive communications, such as reference signals, control information, data communications, or a combination thereof, from the apparatus 906.
  • the reception component 902 may provide received communications to one or more other components of the apparatus 900.
  • the reception component 902 may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, de-mapping, equalization, interference cancellation, or decoding, among other examples), and may provide the processed signals to the one or more other components of the apparatus 900.
  • the reception component 902 may include one or more antennas, a modem, a demodulator, a MIMO detector, a receive processor, a controller/processor, a memory, or a combination thereof, of the UE described in connection with Fig. 2.
  • the transmission component 904 may transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the apparatus 906.
  • one or more other components of the apparatus 900 may generate communications and may provide the generated communications to the transmission component 904 for transmission to the apparatus 906.
  • the transmission component 904 may perform signal processing on the generated communications (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, among other examples), and may transmit the processed signals to the apparatus 906.
  • the transmission component 904 may include one or more antennas, a modem, a modulator, a transmit MIMO processor, a transmit processor, a controller/processor, a memory, or a combination thereof, of the UE described in connection with Fig. 2.
  • the transmission component 904 may be co-located with the reception component 902 in a transceiver.
  • the reception component 902 may receive, from a base station, an indication to multiplex a deferred HARQ feedback for an SPS downlink communication with a PUSCH communication.
  • the transmission component 904 may transmit, to the base station, the deferred HARQ feedback for the SPS downlink communication multiplexed with the PUSCH communication.
  • the reception component 902 may receive the SPS downlink communication.
  • the deferring component 908 may defer HARQ feedback for the SPS downlink communication in connection with a collision between a symbol associated with the HARQ feedback for the SPS downlink communication and a configured downlink symbol, resulting in the deferred HARQ feedback for the SPS downlink communication.
  • Fig. 9 The number and arrangement of components shown in Fig. 9 are provided as an example. In practice, there may be additional components, fewer components, different components, or differently arranged components than those shown in Fig. 9. Furthermore, two or more components shown in Fig. 9 may be implemented within a single component, or a single component shown in Fig. 9 may be implemented as multiple, distributed components. Additionally, or alternatively, a set of (one or more) components shown in Fig. 9 may perform one or more functions described as being performed by another set of components shown in Fig. 9.
  • Fig. 10 is a diagram of an example apparatus 1000 for wireless communication.
  • the apparatus 1000 may be a base station, or a base station may include the apparatus 1000.
  • the apparatus 1000 includes a reception component 1002 and a transmission component 1004, which may be in communication with one another (for example, via one or more buses and/or one or more other components).
  • the apparatus 1000 may communicate with another apparatus 1006 (such as a UE, a base station, or another wireless communication device) using the reception component 1002 and the transmission component 1004.
  • the apparatus 1000 may include the communication manager 150.
  • the communication manager 150 may include a determination component 1008.
  • the apparatus 1000 may be configured to perform one or more operations described herein in connection with Figs. 4-6. Additionally, or alternatively, the apparatus 1000 may be configured to perform one or more processes described herein, such as process 800 of Fig. 8, or a combination thereof.
  • the apparatus 1000 and/or one or more components shown in Fig. 10 may include one or more components of the base station described in connection with Fig. 2. Additionally, or alternatively, one or more components shown in Fig. 10 may be implemented within one or more components described in connection with Fig. 2. Additionally, or alternatively, one or more components of the set of components may be implemented at least in part as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non- transitory computer-readable medium and executable by a controller or a processor to perform the functions or operations of the component.
  • the reception component 1002 may receive communications, such as reference signals, control information, data communications, or a combination thereof, from the apparatus 1006.
  • the reception component 1002 may provide received communications to one or more other components of the apparatus 1000.
  • the reception component 1002 may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, de-mapping, equalization, interference cancellation, or decoding, among other examples), and may provide the processed signals to the one or more other components of the apparatus 1000.
  • the reception component 1002 may include one or more antennas, a modem, a demodulator, a MIMO detector, a receive processor, a controller/processor, a memory, or a combination thereof, of the base station described in connection with Fig. 2.
  • the transmission component 1004 may transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the apparatus 1006.
  • one or more other components of the apparatus 1000 may generate communications and may provide the generated communications to the transmission component 1004 for transmission to the apparatus 1006.
  • the transmission component 1004 may perform signal processing on the generated communications (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, among other examples), and may transmit the processed signals to the apparatus 1006.
  • the transmission component 1004 may include one or more antennas, a modem, a modulator, a transmit MIMO processor, a transmit processor, a controller/processor, a memory, or a combination thereof, of the base station described in connection with Fig. 2. In some aspects, the transmission component 1004 may be co-located with the reception component 1002 in a transceiver.
  • the transmission component 1004 may transmit, to a UE, an indication to multiplex a deferred HARQ feedback for an SPS downlink communication with a PUSCH communication.
  • the reception component 1002 may receive, from the UE, the deferred HARQ feedback for the SPS downlink communication multiplexed with the PUSCH communication.
  • the transmission component 1004 may transmit, to the UE, the SPS downlink communication.
  • the determination component 1008 may determine whether a symbol associated with HARQ feedback for the SPS downlink communication will collide with a configured downlink symbol.
  • Fig. 10 The number and arrangement of components shown in Fig. 10 are provided as an example. In practice, there may be additional components, fewer components, different components, or differently arranged components than those shown in Fig. 10. Furthermore, two or more components shown in Fig. 10 may be implemented within a single component, or a single component shown in Fig. 10 may be implemented as multiple, distributed components. Additionally, or alternatively, a set of (one or more) components shown in Fig. 10 may perform one or more functions described as being performed by another set of components shown in Fig. 10.
  • a method of wireless communication performed by a user equipment comprising: receiving, from a base station, an indication to multiplex a deferred hybrid automatic repeat request (HARQ) feedback for a semi-persistent scheduling (SPS) downlink communication with a physical uplink shared channel (PUSCH) communication; and transmitting, to the base station, the deferred HARQ feedback for the SPS downlink communication multiplexed with the PUSCH communication.
  • HARQ hybrid automatic repeat request
  • SPS semi-persistent scheduling
  • PUSCH physical uplink shared channel
  • Aspect 2 The method of Aspect 1, further comprising: receiving the SPS downlink communication; and deferring HARQ feedback for the SPS downlink communication in connection with a collision between a symbol associated with the HARQ feedback for the SPS downlink communication and a configured downlink symbol, resulting in the deferred HARQ feedback for the SPS downlink communication.
  • Aspect 3 The method of any of Aspects 1-2, wherein receiving the indication to multiplex the deferred HARQ feedback for the SPS downlink communication with the PUSCH communication comprises: receiving downlink control information (DCI) that schedules the PUSCH communication.
  • DCI downlink control information
  • Aspect 4 The method of Aspect 3, wherein the DCI indicates to multiplex the deferred HARQ feedback for the SPS downlink communication based at least in part on scheduling the PUSCH communication before a next available physical uplink control channel (PUCCH) communication after a symbol from which the deferred HARQ feedback for the SPS downlink communication is deferred.
  • PUCCH physical uplink control channel
  • Aspect 5 The method of any of Aspects 1-4, wherein the indication is included in downlink control information (DCI) that schedules the PUSCH communication.
  • DCI downlink control information
  • Aspect 6 The method of Aspect 5, wherein the indication is included in a downlink assignment index field of the DCI.
  • Aspect 7 The method of Aspect 5, wherein the indication is included in the DCI in a dedicated field for indicating multiplexing of SPS HARQ feedback with the PUSCH communication.
  • Aspect 8 The method of any of Aspects 3-7, wherein transmitting the deferred HARQ feedback for the SPS downlink communication multiplexed with the PUSCH communication comprises: transmitting the deferred HARQ feedback for the SPS communication multiplexed with the PUSCH communication on a resource allocated for the PUSCH communication in the DCI.
  • Aspect 9 The method of any of Aspects 1-2, wherein the indication is included in a radio resource control (RRC) configuration.
  • RRC radio resource control
  • Aspect 10 The method of Aspect 9, wherein transmitting the deferred HARQ feedback for the SPS downlink communication multiplexed with the PUSCH communication comprises: multiplexing the deferred HARQ feedback for the SPS downlink communication with an earliest PUSCH communication after a symbol from which the deferred HARQ feedback for the SPS downlink communication is deferred.
  • Aspect 11 The method of any of Aspects 1-2, wherein the indication is included in a medium access control (MAC) control element (MAC-CE).
  • MAC medium access control
  • Aspect 12 The method of any of Aspects 1-3 and 4-11, wherein the PUSCH communication is scheduled after a next available physical uplink control channel (PUCCH) resource after a symbol from which the deferred HARQ feedback for the SPS downlink communication is deferred.
  • PUCCH physical uplink control channel
  • Aspect 13 The method of any of Aspects 1-12, wherein transmitting the deferred HARQ feedback for the SPS downlink communication multiplexed with the PUSCH communication comprises: transmitting the deferred HARQ feedback for the SPS downlink communication multiplexed with the PUSCH communication based at least in part on a determination that the PUSCH communication is scheduled before a next available physical uplink control channel (PUCCH) communication after a symbol from which the deferred HARQ feedback for the SPS downlink communication is deferred.
  • PUCCH physical uplink control channel
  • Aspect 14 The method of any of Aspects 1-2 and 9-13, wherein the PUSCH communication is a configured grant PUSCH communication.
  • Aspect 15 The method of Aspect 14, wherein transmitting the deferred HARQ feedback for the SPS downlink communication multiplexed with the PUSCH communication comprises: adjusting beta factors for the configured grant PUSCH communication to multiplex the deferred HARQ feedback for the SPS downlink communication with the configured grant PUSCH communication on a resource configured for the configured grant PUSCH communication.
  • a method of wireless communication performed by a base station comprising: transmitting, to a user equipment (UE), an indication to multiplex a deferred hybrid automatic repeat request (HARQ) feedback for a semi-persistent scheduling (SPS) downlink communication with a physical uplink shared channel (PUSCH) communication; and receiving, from the UE, the deferred HARQ feedback for the SPS downlink communication multiplexed with the PUSCH communication.
  • UE user equipment
  • HARQ hybrid automatic repeat request
  • SPS semi-persistent scheduling
  • PUSCH physical uplink shared channel
  • Aspect 17 The method of Aspect 16, wherein transmitting the indication comprises: transmitting the indication to the UE based at least in part on a determination that a symbol associated with HARQ feedback for the SPS downlink communication will collide with a configured downlink symbol.
  • Aspect 18 The method of Aspect 17, wherein transmitting the indication further comprises: transmitting the indication to the UE based at least in part on a determination that transmission of the deferred HARQ feedback for the SPS downlink communication on a next available physical uplink control channel (PUCCH) resource after the symbol associated with the HARQ feedback for the SPS downlink communication will result in a collision on the next available PUCCH resource.
  • PUCCH physical uplink control channel
  • Aspect 19 The method of any of Aspects 17-18, wherein transmitting the indication further comprises: transmitting the indication to the UE based at least in part on a determination that the PUSCH communication is scheduled before a next available physical uplink control channel (PUCCH) resource after the symbol associated with the HARQ feedback for the SPS downlink communication.
  • PUCCH physical uplink control channel
  • Aspect 20 The method of any of Aspects 16-19, further comprising: transmitting, to the UE, the SPS downlink communication.
  • Aspect 21 The method of any of Aspects 16-20, wherein transmitting the indication comprises: transmitting downlink control information (DCI) that schedules the PUSCH communication.
  • DCI downlink control information
  • Aspect 22 The method of Aspect 21, wherein the DCI indicates to multiplex the deferred HARQ feedback for the SPS downlink communication based at least in part on scheduling the PUSCH communication before a next available physical uplink control channel (PUCCH) communication after a symbol from which the deferred HARQ feedback for the SPS downlink communication is deferred.
  • PUCCH physical uplink control channel
  • Aspect 23 The method of any of Aspects 16-22, wherein the indication is included in downlink control information (DCI) that schedules the PUSCH communication.
  • DCI downlink control information
  • Aspect 24 The method of Aspect 23, wherein the indication is included in a downlink assignment index field of the DCI.
  • Aspect 25 The method of Aspect 23, wherein the indication is included in the DCI in a dedicated field for indicating multiplexing of SPS HARQ feedback with the PUSCH communication.
  • Aspect 26 The method of any of Aspects 21-25, wherein receiving the deferred HARQ feedback for the SPS downlink communication multiplexed with the PUSCH communication comprises: receiving the deferred HARQ feedback for the SPS communication multiplexed with the PUSCH communication on a resource allocated for the PUSCH communication in the DCI.
  • Aspect 27 The method of any of Aspects 16-20, wherein the indication is included in a radio resource control (RRC) configuration.
  • RRC radio resource control
  • Aspect 28 The method of any of Aspects 16-20, wherein the indication is included in a medium access control (MAC) control element (MAC-CE).
  • MAC medium access control
  • Aspect 29 The method of any of Aspects 16-18, 20-21, and 23-28, wherein the PUSCH communication is scheduled after a next available physical uplink control channel (PUCCH) resource after a symbol from which the deferred HARQ feedback for the SPS downlink communication is deferred.
  • PUCCH physical uplink control channel
  • Aspect 30 The method of any of Aspects 16-29, wherein the PUSCH communication is a configured grant PUSCH communication.
  • Aspect 31 An apparatus for wireless communication at a device, comprising a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method of one or more of Aspects 1-15.
  • Aspect 32 A device for wireless communication, comprising a memory and one or more processors coupled to the memory, the one or more processors configured to perform the method of one or more of Aspects 1-15.
  • Aspect 33 An apparatus for wireless communication, comprising at least one means for performing the method of one or more of Aspects 1-15.
  • Aspect 34 A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method of one or more of Aspects 1-15.
  • Aspect 35 A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method of one or more of Aspects 1-15.
  • Aspect 36 An apparatus for wireless communication at a device, comprising a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method of one or more of Aspects 16-30.
  • Aspect 37 A device for wireless communication, comprising a memory and one or more processors coupled to the memory, the one or more processors configured to perform the method of one or more of Aspects 16-30.
  • Aspect 38 An apparatus for wireless communication, comprising at least one means for performing the method of one or more of Aspects 16-30.
  • Aspect 39 A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method of one or more of Aspects 16-30.
  • Aspect 40 A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method of one or more of Aspects 16-30.
  • the term “component” is intended to be broadly construed as hardware and/or a combination of hardware and software.
  • “Software” shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, and/or functions, among other examples, whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise.
  • a “processor” is implemented in hardware and/or a combination of hardware and software. It will be apparent that systems and/or methods described herein may be implemented in different forms of hardware 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, 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,” or the like are intended to be open-ended terms that do not limit an element that they modify (e.g., an element “having” A may also have B). Further, the phrase “based on” is intended to mean “based, at least in part, on” unless explicitly stated otherwise. Also, as used herein, the term “or” is intended to be inclusive when used in a series and may be used interchangeably with “and/or,” unless explicitly stated otherwise (e.g., if used in combination with “either” or “only one of’).

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

Divers aspects de la présente divulgation portent de manière générale sur la communication sans fil. Selon certains aspects, un équipement utilisateur (UE) peut recevoir, en provenance d'une station de base, une indication pour multiplexer une rétroaction de demande de répétition automatique hybride (HARQ) différée pour une communication de liaison descendante à planification semi-persistante (SPS) avec une communication de canal partagé de liaison montante physique (PUSCH). L'UE peut transmettre, à la station de base, la rétroaction de HARQ différée pour la communication de liaison descendante à SPS multiplexée avec la communication PUSCH. La divulgation concerne de nombreux autres aspects.
PCT/US2022/046092 2021-10-08 2022-10-07 Demande de répétition automatique hybride à planification semi-persistante différée sur un canal partagé de liaison montante physique Ceased WO2023059901A1 (fr)

Applications Claiming Priority (4)

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US202163262297P 2021-10-08 2021-10-08
US63/262,297 2021-10-08
US17/937,919 US20230113343A1 (en) 2021-10-08 2022-10-04 Deferred semi-persistent scheduling hybrid automatic repeat request onto physical uplink shared channel
US17/937,919 2022-10-04

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EP4426032A4 (fr) * 2021-10-28 2025-06-18 Ntt Docomo, Inc. Terminal et procédé de communication

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