WO2022178829A1 - Indication d'une direction de faisceau associée à un instant d'application de faisceau - Google Patents

Indication d'une direction de faisceau associée à un instant d'application de faisceau Download PDF

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Publication number
WO2022178829A1
WO2022178829A1 PCT/CN2021/078147 CN2021078147W WO2022178829A1 WO 2022178829 A1 WO2022178829 A1 WO 2022178829A1 CN 2021078147 W CN2021078147 W CN 2021078147W WO 2022178829 A1 WO2022178829 A1 WO 2022178829A1
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WIPO (PCT)
Prior art keywords
communication
application time
beam direction
repetitions
repetition
Prior art date
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PCT/CN2021/078147
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English (en)
Inventor
Fang Yuan
Yan Zhou
Sony Akkarakaran
Tao Luo
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Qualcomm Incorporated
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Publication date
Application filed by Qualcomm Incorporated filed Critical Qualcomm Incorporated
Priority to PCT/CN2021/078147 priority Critical patent/WO2022178829A1/fr
Publication of WO2022178829A1 publication Critical patent/WO2022178829A1/fr

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    • 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
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04B—TRANSMISSION
    • H04B7/00—Radio transmission systems, i.e. using radiation field
    • H04B7/02—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas
    • H04B7/04—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas
    • H04B7/06—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station
    • H04B7/0613—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission
    • H04B7/0615—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal
    • H04B7/0619—Diversity systems; Multi-antenna system, i.e. transmission or reception using multiple antennas using two or more spaced independent antennas at the transmitting station using simultaneous transmission of weighted versions of same signal using feedback from receiving side
    • H04B7/0636—Feedback format
    • H04B7/0639—Using selective indices, e.g. of a codebook, e.g. pre-distortion matrix index [PMI] or for beam selection
    • 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
    • H04L1/08—Arrangements for detecting or preventing errors in the information received by repeating transmission, e.g. Verdan system
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L1/00—Arrangements for detecting or preventing errors in the information received
    • H04L1/12—Arrangements for detecting or preventing errors in the information received by using return channel
    • H04L1/16—Arrangements for detecting or preventing errors in the information received by using return channel in which the return channel carries supervisory signals, e.g. repetition request signals
    • H04L1/18—Automatic repetition systems, e.g. Van Duuren systems
    • H04L1/1829—Arrangements specially adapted for the receiver end
    • H04L1/1864—ARQ related signaling
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0014—Three-dimensional division
    • H04L5/0023—Time-frequency-space

Definitions

  • the present disclosure is directed to wireless communication systems and methods.
  • the present disclosure includes indicating a beam direction associated with a beam application time.
  • Wireless communications systems are widely deployed to provide various types of communication content such as voice, video, packet data, messaging, broadcast, and so on. These systems may be capable of supporting communication with multiple users by sharing the available system resources (e.g., time, frequency, and power) .
  • a wireless multiple-access communications system may include a number of base stations (BSs) , each simultaneously supporting communications for multiple communication devices, which may be otherwise known as user equipment (UE) .
  • BSs base stations
  • UE user equipment
  • NR next generation new radio
  • LTE long-term evolution
  • NR next generation new radio
  • 5G 5 th Generation
  • LTE long-term evolution
  • NR next generation new radio
  • NR is designed to provide a lower latency, a higher bandwidth or a higher throughput, and a higher reliability than LTE.
  • NR is designed to operate over a wide array of spectrum bands, for instance, from low-frequency bands below about 1 gigahertz (GHz) and mid-frequency bands from about 1 GHz to about 6 GHz, to high-frequency bands such as millimeter wave (mmWave) bands.
  • GHz gigahertz
  • mmWave millimeter wave
  • NR is also designed to operate across different spectrum types, from licensed spectrum to unlicensed and shared spectrum. Spectrum sharing enables operators to opportunistically aggregate spectrums to dynamically support high-bandwidth services. Spectrum sharing can extend the benefit of NR technologies to operating entities that may not have access to a licensed spectrum.
  • a BS may configure a UE with quasi-co-location (QCL) related information for receiving DL communications from the BS or transmitting UL communications to the BS.
  • QCL quasi-co-location
  • Two antenna ports are quasi-co-located when a signal received from one antenna port experiences a same channel or at least a similar channel as another signal received from the other antenna port.
  • QCL can be at various levels. For instance, QCL can be in terms of doppler shift, doppler spread, average delay, delay spread, and/or receive spatial parameter.
  • a method of wireless communication performed by a user equipment includes: receiving, from a base station (BS) , an indication of a first beam direction associated with a beam application time; and communicating a first communication including one or more repetitions of a communication signal, where communicating the first communication includes: communicating, based on a second beam direction different from the first beam direction before the beam application time, at least a first repetition of the one or more repetitions of the communication signal; and communicating, based on the first beam direction and the beam application time, at least a second repetition of the one or more repetitions of the communication signal.
  • BS base station
  • a method of wireless communication performed by a user equipment includes: receiving, from a base station (BS) , an indication of a first beam direction associated with a beam application time; communicating, based on a second beam direction different from the first beam direction, a first communication including one or more repetitions of a first communication signal, where at least a first repetition of the one or more repetitions is communicated before the beam application time and at least a second repetition of the one or more repetitions is communicated after the beam application time; and communicating, based on the first beam direction, a second communication after communicating the first communication.
  • BS base station
  • a method of wireless communication performed by a user equipment includes: receiving, from a base station (BS) , an indication of a first beam direction associated with a beam application time; communicating, based on a second beam direction different from the first beam direction before the beam application time, a first communication including one or more repetitions of a first communication signal less than a number of repetitions associated with a grant for the first communication; refraining from communicating at least a second repetition of the one or more repetitions of the first communication signal; and communicating, based on the first beam direction and on the beam application time, a second communication after communicating the first communication.
  • BS base station
  • a user equipment includes a transceiver configured to: receive, from a base station (BS) , an indication of a first beam direction associated with a beam application time; and communicate a first communication including one or more repetitions of a communication signal, where the transceiver is configured to: communicate, based on a second beam direction different from the first beam direction before the beam application time, at least a first repetition of the one or more repetitions of the communication signal; and communicate, based on the first beam direction and the beam application time, at least a second repetition of the one or more repetitions of the communication signal.
  • BS base station
  • the transceiver is configured to: communicate, based on a second beam direction different from the first beam direction before the beam application time, at least a first repetition of the one or more repetitions of the communication signal; and communicate, based on the first beam direction and the beam application time, at least a second repetition of the one or more repetitions of the communication signal.
  • a user equipment includes a transceiver configured to: receive, from a base station (BS) , an indication of a first beam direction associated with a beam application time; communicate, based on a second beam direction different from the first beam direction, a first communication including one or more repetitions of a first communication signal, where at least a first repetition of the one or more repetitions is communicated before the beam application time and at least a second repetition of the one or more repetitions is communicated after the beam application time; and communicate, based on the first beam direction, a second communication after communicating the first communication.
  • BS base station
  • a user equipment includes a transceiver, a memory, and a processor.
  • the transceiver is configured to: receive, from a base station (BS) , an indication of a first beam direction associated with a beam application time; communicate, based on a second beam direction different from the first beam direction before the beam application time, a first communication including one or more repetitions of a first communication signal less than a number of repetitions associated with a grant for the first communication; and communicate, based on the first beam direction and on the beam application time, a second communication after communicating the first communication.
  • the processor is configured to, when executing instructions stored on the memory, cause the UE to refrain from communicating at least a second repetition of the one or more repetitions of the first communication signal.
  • a computer-readable medium having program code recorded thereon, the program code including: code for causing a user equipment (UE) to receive, from a base station (BS) , an indication of a first beam direction associated with a beam application time; code for causing the UE to communicate a first communication including one or more repetitions of a communication signal, where the code for causing the UE to communicate the first communication includes: code for causing the UE to communicate, based on a second beam direction different from the first beam direction before the beam application time, at least a first repetition of the one or more repetitions of the communication signal; and code for causing the UE to communicate, based on the first beam direction and the beam application time, at least a second repetition of the one or more repetitions of the communication signal.
  • UE user equipment
  • BS base station
  • a computer-readable medium having program code recorded thereon, the program code including: code for causing a user equipment (UE) to receive, from a base station (BS) , an indication of a first beam direction associated with a beam application time; code for causing the UE to communicate, based on a second beam direction different from the first beam direction, a first communication including one or more repetitions of a first communication signal, where at least a first repetition of the one or more repetitions is communicated before the beam application time and at least a second repetition of the one or more repetitions is communicated after the beam application time; and code for causing the UE to communicate, based on the first beam direction, a second communication after communicating the first communication.
  • UE user equipment
  • BS base station
  • a computer-readable medium having program code recorded thereon, the program code including: code for causing a user equipment (UE) to receive, from a base station (BS) , an indication of a first beam direction associated with a beam application time; code for causing the UE to communicate, based on a second beam direction different from the first beam direction before the beam application time, a first communication including one or more repetitions of a first communication signal less than a number of repetitions associated with a grant for the first communication; code for causing the UE to refrain from communicating at least a second repetition of the one or more repetitions of the first communication signal; and code for causing the UE to communicate, based on the first beam direction and on the beam application time, a second communication after communicating the first communication.
  • UE user equipment
  • BS base station
  • an apparatus includes: means for receiving, from a base station (BS) , an indication of a first beam direction associated with a beam application time; and means for communicating a first communication including one or more repetitions of a communication signal, where the means for communicating the first communication includes: means for communicating, based on a second beam direction different from the first beam direction before the beam application time, at least a first repetition of the one or more repetitions of the communication signal; and means for communicating, based on the first beam direction and the beam application time, at least a second repetition of the one or more repetitions of the communication signal.
  • BS base station
  • an apparatus includes: means for receiving, from a base station (BS) , an indication of a first beam direction associated with a beam application time; means for communicating, based on a second beam direction different from the first beam direction, a first communication including one or more repetitions of a first communication signal, where at least a first repetition of the one or more repetitions is communicated before the beam application time and at least a second repetition of the one or more repetitions is communicated after the beam application time; and means for communicating, based on the first beam direction, a second communication after communicating the first communication.
  • BS base station
  • an apparatus includes: means for receiving, from a base station (BS) , an indication of a first beam direction associated with a beam application time; means for communicating, based on a second beam direction different from the first beam direction before the beam application time, a first communication including one or more repetitions of a first communication signal less than a number of repetitions associated with a grant for the first communication; means for refraining from communicating at least a second repetition of the one or more repetitions of the first communication signal; and means for communicating, based on the first beam direction and on the beam application time, a second communication after communicating the first communication.
  • BS base station
  • a method of wireless communication performed by a base station includes: transmitting, to a user equipment (UE) , an indication of a first beam direction associated with a beam application time; and receiving an uplink (UL) communication including one or more repetitions of a communication signal, where receiving the UL communication includes: receiving, based on a second beam direction different from the first beam direction before the beam application time, at least a first repetition of the one or more repetitions of the communication signal; and receiving, based on the first beam direction and on the beam application time, at least a second repetition of the one or more repetitions of the communication signal.
  • UE user equipment
  • UL uplink
  • a method of wireless communication performed by a base station includes: transmitting, to a user equipment (UE) , an indication of a first beam direction associated with a beam application time; receiving, based on a second beam direction different from the first beam direction, a first uplink (UL) communication including one or more repetitions of a first communication signal, where at least a first repetition of the one or more repetitions is received before the beam application time and at least a second repetition of the one or more repetitions is received after the beam application time; and receiving, based on the first beam direction, a second UL communication after receiving the first UL communication.
  • UL uplink
  • a method of wireless communication performed by a base station includes: transmitting, to a user equipment (UE) , an indication of a first beam direction associated with a beam application time; receiving, based on a second beam direction different from the first beam direction before the beam application time, a first uplink (UL) communication including one or more repetitions of a first communication signal less than a number of repetitions associated with a UL grant for the first UL communication; refraining from receiving at least a second repetition of the communication signal associated with the UL grant after the beam application time; and receiving, based on the first beam direction and the beam application time, a second UL communication.
  • UL uplink
  • a base station includes a transceiver configured to: transmit, to a user equipment (UE) , an indication of a first beam direction associated with a beam application time; and receive an uplink (UL) communication including one or more repetitions of a communication signal, where the transceiver is configured to: receive, based on a second beam direction different from the first beam direction before the beam application time, at least a first repetition of the one or more repetitions of the communication signal; and receive, based on the first beam direction and on the beam application time, at least a second repetition of the one or more repetitions of the communication signal.
  • UE user equipment
  • UL uplink
  • a base station includes a transceiver configured to: transmit, to a user equipment (UE) , an indication of a first beam direction associated with a beam application time; receive, based on a second beam direction different from the first beam direction, a first uplink (UL) communication including one or more repetitions of a first communication signal, where at least a first repetition of the one or more repetitions is received before the beam application time and at least a second repetition of the one or more repetitions is received after the beam application time; and receive, based on the first beam direction, a second UL communication after receiving the first UL communication.
  • UE user equipment
  • UL uplink
  • a base station includes a transceiver, a memory, and a processor coupled with the memory.
  • the transceiver is configured to: transmit, to a user equipment (UE) , an indication of a first beam direction associated with a beam application time; receive, based on a second beam direction different from the first beam direction before the beam application time, a first uplink (UL) communication including one or more repetitions of a first communication signal less than a number of repetitions associated with a UL grant for the first UL communication; and receive, in the first beam direction based on the beam application time, a second UL communication.
  • the processor is configured to, when executing instructions stored on the memory, cause the BS to refrain from receiving at least a second repetition of the communication signal associated with the UL grant after the beam application time.
  • a computer-readable medium having program code recorded thereon, the program code including: code for causing a base station (BS) to transmit, to a user equipment (UE) , an indication of a first beam direction associated with a beam application time; and code for causing the BS to receive an uplink (UL) communication including one or more repetitions of a communication signal, where the code for causing the BS to receive the UL communication includes: code for causing the BS to receive, based on a second beam direction different from the first beam direction before the beam application time, at least a first repetition of the one or more repetitions of the communication signal; and code for causing the BS to receive, based on the first beam direction and on the beam application time, at least a second repetition of the one or more repetitions of the communication signal.
  • a computer-readable medium having program code recorded thereon, the program code including: code for causing a base station (BS) to transmit, to a user equipment (UE) , an indication of a first beam direction associated with a beam application time; code for causing the BS to receive, based on a second beam direction different from the first beam direction, a first uplink (UL) communication including one or more repetitions of a first communication signal, where at least a first repetition of the one or more repetitions is received before the beam application time and at least a second repetition of the one or more repetitions is received after the beam application time; and code for causing the BS to receive, based on the first beam direction, a second UL communication after receiving the first UL communication.
  • BS base station
  • UE user equipment
  • a computer-readable medium having program code recorded thereon, the program code including: code for causing a base station (BS) to transmit, to a user equipment (UE) , an indication of a first beam direction associated with a beam application time; code for causing the BS to receive, based on a second beam direction different from the first beam direction before the beam application time, a first uplink (UL) communication including one or more repetitions of a first communication signal less than a number of repetitions associated with a UL grant for the first UL communication; code for causing the BS to refrain from receiving at least a second repetition of the communication signal associated with the UL grant after the beam application time; and code for causing the BS to receive, in the first beam direction based on the beam application time, a second UL communication.
  • BS base station
  • UE user equipment
  • an apparatus includes: means for transmitting, to a user equipment (UE) , an indication of a first beam direction associated with a beam application time; means for receiving an uplink (UL) communication including one or more repetitions of a communication signal, where the means for receiving the UL communication includes: means for receiving, based on a second beam direction different from the first beam direction before the beam application time, at least a first repetition of the one or more repetitions of the communication signal; and means for receiving, based on the first beam direction and on the beam application time, at least a second repetition of the one or more repetitions of the communication signal.
  • UE user equipment
  • UL uplink
  • an apparatus includes: means for transmitting, to a user equipment (UE) , an indication of a first beam direction associated with a beam application time; means for receiving, based on a second beam direction different from the first beam direction, a first uplink (UL) communication including one or more repetitions of a first communication signal, where at least a first repetition of the one or more repetitions is received before the beam application time and at least a second repetition of the one or more repetitions is received after the beam application time; and means for receiving, based on the first beam direction, a second UL communication after receiving the first UL communication.
  • UE user equipment
  • UL uplink
  • an apparatus includes: means for transmitting, to a user equipment (UE) , an indication of a first beam direction associated with a beam application time; means for receiving, based on a second beam direction different from the first beam direction before the beam application time, a first uplink (UL) communication including one or more repetitions of a first communication signal less than a number of repetitions associated with a UL grant for the first UL communication; means for refraining from receiving at least a second repetition of the communication signal associated with the UL grant after the beam application time; and means for receiving, in the first beam direction based on the beam application time, a second UL communication.
  • UE user equipment
  • FIG. 1 illustrates a wireless communication network according to one or more aspects of the present disclosure.
  • FIG. 2 is a timing diagram illustrating a radio frame structure according to one or more aspects of the present disclosure.
  • FIG. 3 illustrates a transmission configuration indication (TCI) state table according to one or more aspects of the present disclosure.
  • FIG. 4 illustrates a beam indication communication scheme according to one or more aspects of the present disclosure.
  • FIG. 5 illustrates a beam indication communication scheme according to one or more aspects of the present disclosure.
  • FIG. 6 illustrates a beam indication communication scheme according to one or more aspects of the present disclosure.
  • FIG. 7 is a block diagram of a base station (BS) according to one or more aspects of the present disclosure.
  • FIG. 8 is a block diagram of a user equipment (UE) according to one or more aspects of the present disclosure.
  • FIG. 9 is a flow diagram illustrating a beam indication communication method according to one or more aspects of the present disclosure.
  • FIG. 10 is a flow diagram illustrating a beam indication communication method according to one or more aspects of the present disclosure.
  • FIG. 11 is a flow diagram illustrating a beam indication communication method according to one or more aspects of the present disclosure.
  • FIG. 12 is a flow diagram illustrating a beam indication communication method according to one or more aspects of the present disclosure.
  • FIG. 13 is a flow diagram illustrating a beam indication communication method according to one or more aspects of the present disclosure.
  • FIG. 14 is a flow diagram illustrating a beam indication communication method according to one or more aspects of the present disclosure.
  • wireless communications systems also referred to as wireless communications networks.
  • the techniques and apparatus may be used for wireless communication networks such as code division multiple access (CDMA) networks, time division multiple access (TDMA) networks, frequency division multiple access (FDMA) networks, orthogonal FDMA (OFDMA) networks, single-carrier FDMA (SC-FDMA) networks, LTE networks, Global System for Mobile Communications (GSM) networks, 5 th Generation (5G) or new radio (NR) networks, as well as other communications networks.
  • CDMA code division multiple access
  • TDMA time division multiple access
  • FDMA frequency division multiple access
  • OFDMA orthogonal FDMA
  • SC-FDMA single-carrier FDMA
  • LTE Long Term Evolution
  • GSM Global System for Mobile Communications
  • 5G 5 th Generation
  • NR new radio
  • An OFDMA network may implement a radio technology such as evolved UTRA (E-UTRA) , Institute of Electrical and Electronics Engineers (IEEE) 802.11, IEEE 802.16, IEEE 802.20, flash-OFDM and the like.
  • E-UTRA evolved UTRA
  • IEEE Institute of Electrical and Electronics Engineers
  • GSM Global System for Mobile communications
  • LTE long term evolution
  • UTRA, E-UTRA, GSM, UMTS and LTE are described in documents provided from an organization named “3rd Generation Partnership Project” (3GPP)
  • cdma2000 is described in documents from an organization named “3rd Generation Partnership Project 2” (3GPP2) .
  • 3GPP 3rd Generation Partnership Project
  • 3GPP long term evolution LTE
  • LTE long term evolution
  • the 3GPP may define specifications for the next generation of mobile networks, mobile systems, and mobile devices.
  • the present disclosure is concerned with the evolution of wireless technologies from LTE, 4G, 5G, NR, and beyond with shared access to wireless spectrum between networks using a collection of new and different radio access technologies or radio air interfaces.
  • 5G networks contemplate diverse deployments, diverse spectrum, and diverse services and devices that may be implemented using an OFDM-based unified, air interface.
  • LTE and LTE-A are considered in addition to development of the new radio technology for 5G NR networks.
  • the 5G NR will be capable of scaling to provide coverage (1) to a massive Internet of things (IoTs) with a ULtra-high density (e.g., ⁇ 1M nodes/km 2 ) , ultra-low complexity (e.g., ⁇ 10s of bits/sec) , ultra-low energy (e.g., ⁇ 10+years of battery life) , and deep coverage with the capability to reach challenging locations; (2) including mission-critical control with strong security to safeguard sensitive personal, financial, or classified information, ultra-high reliability (e.g., ⁇ 99.9999%reliability) , ultra-low latency (e.g., ⁇ 1 ms) , and users with wide ranges of mobility or lack thereof; and (3) with enhanced mobile broadband including extreme high capacity (e.g., ⁇ 10 Tbps/km 2 ) , extreme data rates (e.g., multi-Gbps rate, 100+ Mbps user experienced rates) , and deep awareness with advanced discovery and optimizations.
  • IoTs Internet of things
  • the 5G NR may be implemented to use optimized OFDM-based waveforms with scalable numerology and transmission time interval (TTI) ; having a common, flexible framework to efficiently multiplex services and features with a dynamic, low-latency time division duplex (TDD) /frequency division duplex (FDD) design; and with advanced wireless technologies, such as massive multiple input, multiple output (MIMO) , robust millimeter wave (mmWave) transmissions, advanced channel coding, and device-centric mobility.
  • TTI transmission time interval
  • MIMO massive multiple input, multiple output
  • mmWave millimeter wave
  • Scalability of the numerology in 5G NR with scaling of subcarrier spacing, may efficiently address operating diverse services across diverse spectrum and diverse deployments.
  • subcarrier spacing may occur with 15 kHz, for instance over 5, 10, 20 MHz, and the like bandwidth (BW) .
  • BW bandwidth
  • subcarrier spacing may occur with 30 kHz over 80/100 MHz BW.
  • subcarrier spacing may occur with 60 kHz over a 160 MHz BW.
  • subcarrier spacing may occur with 120 kHz over a 500 MHz BW.
  • the scalable numerology of the 5G NR facilitates scalable TTI for diverse latency and quality of service (QoS) requirements. For instance, shorter TTI may be used for low latency and high reliability, while longer TTI may be used for higher spectral efficiency.
  • QoS quality of service
  • 5G NR also contemplates a self-contained integrated subframe design with uplink (UL) /downlink (DL) scheduling information, data, and acknowledgement in the same subframe.
  • the self-contained integrated subframe supports communications in unlicensed or contention-based shared spectrum, adaptive UL/DL that may be flexibly configured on a per-cell basis to dynamically switch between UL and DL to meet the current traffic needs.
  • a BS and a UE may perform beam measurements and beam selections to determine one or more optimal beams for communications.
  • the UE may communicate a communication including one or more repetitions of a communication signal.
  • the UE may transmit, to the BS, an uplink (UL) communication including one or more repetitions of the communication signal.
  • the UE may receive, from the BS, a downlink (DL) communication including one or more repetitions of the communication signal.
  • the BS may provide, to the UE, an indication of a new beam direction associated with a beam application time.
  • the beam application time may specify when the UE should apply the new beam direction.
  • the present disclosure provides techniques for handling scenarios in which the beam application time corresponds to a time at which the UE is transmitting or receiving a repetition of the one or more repetitions. For instance, based on the beam application time, the new beam direction would take effect during a transmission of a repetition of the communication signal in the UL communication or during reception of a repetition of the communication signal in the DL communication.
  • the UE may implement communication schemes for switching from a current beam direction to a new beam direction in DL/UL communications including one or more repetitions of a communication signal. The UE may perform this switch in a variety of ways.
  • the BS transmits a DL control information (DCI) carrying a unified transmission configuration indication (TCI) state.
  • the TCI state may include the indication of a first beam direction associated with a beam application time.
  • the beam application time may specify a first slot that is located at a first time period after the indication, a first slot that is located at a first number of symbols after the indication, a first slot that is located at a first time period after an acknowledgment resource of the indication, and/or a first slot that is located at a first number of symbols after an acknowledgment resource of the indication.
  • the UE may receive the indication and communicate a first communication including one or more repetitions of a communication signal.
  • the TCI state may include a joint UL/DL common TCI state indicating a common beam for at least one DL channel and at least one UL channel or indicating a common beam for at least one DL reference signal and at least one UL reference signal.
  • the TCI state may include a separate DL common TCI state indicating a common beam for at least two DL channels or indicating a common beam for at least two DL reference signals.
  • the TCI state may include a separate UL common TCI state indicating a common beam for at least two UL channels or indicating a common beam for at least two UL reference signals.
  • the DL channels may include PDSCH, PDCCH, and/or PBCH.
  • the UL channels may include PUCCH and/or PUSCH.
  • the DL reference signals may include SSBs and/or CSI-RSs.
  • the UL reference signals may include SRSs.
  • the UE may apply a new beam direction to the communication including the one or more repetitions of a communication signal (e.g., a UL communication or a DL communication signal) by switching from a current beam direction to the new beam direction and using the new beam direction starting at a particular slot.
  • the particular slot may include a first slot that is located at a first time period after the indication, a first slot that is located at a first number of symbols after the indication, a first slot that is located at a first time period after an acknowledgment resource of the indication, or a first slot that is located at a first number of symbols after an acknowledgment resource of the indication.
  • An advantage of such a communication scheme may provide for reduced latency of the beam application. Additionally or alternatively, the UE may use this communication scheme if the UE supports a single active beam.
  • the UE may delay application of the new beam direction until after the UE has completed transmitting a UL communication including one or more repetitions of a UL communication signal or after the UE has completed receiving a DL communication including one or more repetitions of the DL communication signal.
  • the UE may postpone the time that the new beam direction becomes effective until a first slot after the UE has completed transmission of the UL communication or reception of the DL communication.
  • the UE may apply the new beam direction to a next communication.
  • the UE may apply indication of the first beam direction to other channels of reception or transmission applicable to the new beam direction.
  • the UE may cancel transmission of one or more remaining repetitions of the communication at a first slot after the beam application time.
  • the UE may apply the new beam direction to a next communication by switching from a current beam direction to the new beam direction and then receiving a DL communication from the new beam direction or transmitting a UL communication in the new beam direction.
  • FIG. 1 illustrates a wireless communication network 100 according to one or more aspects of the present disclosure.
  • the network 100 may be a 5G network.
  • the network 100 includes a number of BSs 105 (individually labeled as 105a, 105b, 105c, 105d, 105e, and 105f) and other network entities.
  • a BS 105 may be a station that communicates with UEs 115 (individually labeled as 115a, 115b, 115c, 115d, 115e, 115f, 115g, 115h, and 115k) and may also be referred to as an evolved node B (eNB) , a next generation eNB (gNB) , an access point, and the like.
  • eNB evolved node B
  • gNB next generation eNB
  • Each BS 105 may provide communication coverage for a particular geographic area.
  • the term “cell” can refer to this particular geographic coverage area of a BS 105 and/or a BS subsystem serving the coverage area, depending on the context in which the term is used.
  • a BS 105 may provide communication coverage for a macro cell or a small cell, such as a pico cell or a femto cell, and/or other types of cell.
  • a macro cell generally covers a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs with service subscriptions with the network provider.
  • a small cell such as a pico cell, would generally cover a relatively smaller geographic area and may allow unrestricted access by UEs with service subscriptions with the network provider.
  • a small cell such as a femto cell, would also generally cover a relatively small geographic area (e.g., a home) and, in addition to unrestricted access, may also provide restricted access by UEs having an association with the femto cell (e.g., UEs in a closed subscriber group (CSG) , UEs for users in the home, and the like) .
  • a BS for a macro cell may be referred to as a macro BS.
  • a BS for a small cell may be referred to as a small cell BS, a pico BS, a femto BS or a home BS.
  • the BSs 105d and 105e may be regular macro BSs, while the BSs 105a-105c may be macro BSs enabled with one of three dimension (3D) , full dimension (FD) , or massive MIMO.
  • the BSs 105a-105c may take advantage of their higher dimension MIMO capabilities to exploit 3D beamforming in both elevation and azimuth beamforming to increase coverage and capacity.
  • the BS 105f may be a small cell BS which may be a home node or portable access point.
  • a BS 105 may support one or multiple (e.g., two, three, four, and the like) cells.
  • the network 100 may support synchronous or asynchronous operation.
  • the BSs may have similar frame timing, and transmissions from different BSs may be approximately aligned in time.
  • the BSs may have different frame timing, and transmissions from different BSs may not be aligned in time.
  • the UEs 115 are dispersed throughout the wireless network 100, and each UE 115 may be stationary or mobile.
  • a UE 115 may also be referred to as a terminal, a mobile station, a subscriber unit, a station, or the like.
  • a UE 115 may be a cellular phone, a personal digital assistant (PDA) , a wireless modem, a wireless communication device, a handheld device, a tablet computer, a laptop computer, a cordless phone, a wireless local loop (WLL) station, or the like.
  • PDA personal digital assistant
  • WLL wireless local loop
  • a UE 115 may be a device that includes a Universal Integrated Circuit Card (UICC) .
  • a UE may be a device that does not include a UICC.
  • UICC Universal Integrated Circuit Card
  • the UEs 115 that do not include UICCs may also be referred to as IoT devices or internet of everything (IoE) devices.
  • the UEs 115a-115d are instances of mobile smart phone-type devices accessing network 100.
  • a UE 115 may also be a machine specifically configured for connected communication, including machine type communication (MTC) , enhanced MTC (eMTC) , narrowband IoT (NB-IoT) and the like.
  • MTC machine type communication
  • eMTC enhanced MTC
  • NB-IoT narrowband IoT
  • the UEs 115e-115h are instances of various machines configured for communication that access the network 100.
  • the UEs 115i-115k are instances of vehicles equipped with wireless communication devices configured for communication that access the network 100.
  • a UE 115 may be able to communicate with any type of the BSs, whether macro BS, small cell, or the like.
  • a lightning bolt (e.g., communication links) indicates wireless transmissions between a UE 115 and a serving BS 105, which is a BS designated to serve the UE 115 on the DL and/or UL, desired transmission between BSs 105, backhaul transmissions between BSs, or sidelink transmissions between UEs 115.
  • the BSs 105a-105c may serve the UEs 115a and 115b using 3D beamforming and coordinated spatial techniques, such as coordinated multipoint (CoMP) or multi-connectivity.
  • the macro BS 105d may perform backhaul communications with the BSs 105a-105c, as well as small cell, the BS 105f.
  • the macro BS 105d may also transmits multicast services which are subscribed to and received by the UEs 115c and 115d.
  • Such multicast services may include mobile television or stream video, or may include other services for providing community information, such as weather emergencies or alerts, such as Amber alerts or gray alerts.
  • the BSs 105 may also communicate with a core network.
  • the core network may provide user authentication, access authorization, tracking, Internet Protocol (IP) connectivity, and other access, routing, or mobility functions.
  • IP Internet Protocol
  • At least some of the BSs 105 (e.g., which may be an instance of a gNB or an access node controller (ANC) ) may interface with the core network through backhaul links (e.g., NG-C, NG-U, etc. ) and may perform radio configuration and scheduling for communication with the UEs 115.
  • the BSs 105 may communicate, either directly or indirectly (e.g., through core network) , with each other over backhaul links (e.g., X1, X2, etc. ) , which may be wired or wireless communication links.
  • the network 100 may also support mission critical communications with ultra-reliable and redundant links for mission critical devices, such as the UE 115e, which may be a drone. Redundant communication links with the UE 115e may include links from the macro BSs 105d and 105e, as well as links from the small cell BS 105f.
  • UE 115f e.g., a thermometer
  • UE 115g e.g., smart meter
  • UE 115h e.g., wearable device
  • the network 100 may also provide additional network efficiency through dynamic, low-latency TDD/FDD communications, such asV2V, V2X, C-V2X communications between a UE 115i, 115j, or 115k and other UEs 115, and/or vehicle-to-infrastructure (V2I) communications between a UE 115i, 115j, or 115k and a BS 105.
  • V2V dynamic, low-latency TDD/FDD communications
  • V2X V2X
  • C-V2X C-V2X communications between a UE 115i, 115j, or 115k and other UEs 115
  • V2I vehicle-to-infrastructure
  • the network 100 utilizes OFDM-based waveforms for communications.
  • An OFDM-based system may partition the system BW into multiple (K) orthogonal subcarriers, which are also commonly referred to as subcarriers, tones, bins, or the like. Each subcarrier may be modulated with data.
  • the subcarrier spacing between adjacent subcarriers may be fixed, and the total number of subcarriers (K) may be dependent on the system BW.
  • the system BW may also be partitioned into subbands.
  • the subcarrier spacing and/or the duration of TTIs may be scalable.
  • the BSs 105 can assign or schedule transmission resources (e.g., in the form of time-frequency resource blocks (RB) ) for DL and UL transmissions in the network 100.
  • DL refers to the transmission direction from a BS 105 to a UE 115
  • UL refers to the transmission direction from a UE 115 to a BS 105.
  • the communication can be in the form of radio frames.
  • a radio frame may be divided into a plurality of subframes or slots, for instance, about 10. Each slot may be further divided into mini-slots. In a FDD mode, simultaneous UL and DL transmissions may occur in different frequency bands.
  • each subframe includes a UL subframe in a UL frequency band and a DL subframe in a DL frequency band.
  • UL and DL transmissions occur at different time periods using the same frequency band.
  • a subset of the subframes (e.g., DL subframes) in a radio frame may be used for DL transmissions and another subset of the subframes (e.g., UL subframes) in the radio frame may be used for UL transmissions.
  • each DL or UL subframe may have pre-defined regions for transmissions of reference signals, control information, and data.
  • Reference signals are predetermined signals that facilitate the communications between the BSs 105 and the UEs 115.
  • a reference signal can have a particular pilot pattern or structure, where pilot tones may span across an operational BW or frequency band, each positioned at a pre-defined time and a pre-defined frequency.
  • a BS 105 may transmit cell specific reference signals (CRSs) and/or channel state information –reference signals (CSI-RSs) to enable a UE 115 to estimate a DL channel.
  • CRSs cell specific reference signals
  • CSI-RSs channel state information –reference signals
  • a UE 115 may transmit sounding reference signals (SRSs) to enable a BS 105 to estimate a UL channel.
  • Control information may include resource assignments and protocol controls.
  • Data may include protocol data and/or operational data.
  • the BSs 105 and the UEs 115 may communicate using self-contained subframes.
  • a self-contained subframe may include a portion for DL communication and a portion for UL communication.
  • a self-contained subframe can be DL-centric or UL-centric.
  • a DL-centric subframe may include a longer duration for DL communication than for UL communication.
  • a UL-centric subframe may include a longer duration for UL communication than for DL communication.
  • the network 100 may be an NR network deployed over a licensed spectrum.
  • the BSs 105 can transmit synchronization signals (e.g., including a primary synchronization signal (PSS) and a secondary synchronization signal (SSS) ) in the network 100 to facilitate synchronization.
  • the BSs 105 can broadcast system information associated with the network 100 (e.g., including a master information block (MIB) , remaining system information (RMSI) , and other system information (OSI) ) to facilitate initial network access.
  • MIB master information block
  • RMSI remaining system information
  • OSI system information
  • the BSs 105 may broadcast the PSS, the SSS, and/or the MIB in the form of synchronization signal block (SSBs) and may broadcast the RMSI and/or the OSI over a physical downlink shared channel (PDSCH) .
  • the MIB may be transmitted over a physical broadcast channel (PBCH) .
  • PBCH physical broadcast channel
  • a UE 115 attempting to access the network 100 may perform an initial cell search by detecting a PSS from a BS 105.
  • the PSS may enable synchronization of period timing and may indicate a physical layer identity value.
  • the UE 115 may then receive a SSS.
  • the SSS may enable radio frame synchronization, and may provide a cell identity value, which may be combined with the physical layer identity value to identify the cell.
  • the PSS and the SSS may be located in a central portion of a carrier or any suitable frequencies within the carrier.
  • the UE 115 may receive a MIB.
  • the MIB may include system information for initial network access and scheduling information for RMSI and/or OSI.
  • the UE 115 may receive RMSI and/or OSI.
  • the RMSI and/or OSI may include radio resource control (RRC) information related to random access channel (RACH) procedures, paging, control resource set (CORESET) for physical downlink control channel (PDCCH) monitoring, physical UL control channel (PUCCH) , physical UL shared channel (PUSCH) , power control, and SRS.
  • RRC radio resource control
  • the UE 115 can perform a random access procedure to establish a connection with the BS 105.
  • the random access procedure may be a four-step random access procedure.
  • the UE 115 may transmit a random access preamble and the BS 105 may respond with a random access response.
  • the random access response (RAR) may include a detected random access preamble identifier (ID) corresponding to the random access preamble, timing advance (TA) information, an UL grant, a temporary cell-radio network temporary identifier (C-RNTI) , and/or a backoff indicator.
  • ID detected random access preamble identifier
  • TA timing advance
  • C-RNTI temporary cell-radio network temporary identifier
  • the UE 115 may transmit a connection request to the BS 105 and the BS 105 may respond with a connection response.
  • the connection response may indicate a contention resolution.
  • the random access preamble, the RAR, the connection request, and the connection response can be referred to as message 1 (MSG1) , message 2 (MSG2) , message 3 (MSG3) , and message 4 (MSG4) , respectively.
  • the random access procedure may be a two-step random access procedure, where the UE 115 may transmit a random access preamble and a connection request in a single transmission and the BS 105 may respond by transmitting a random access response and a connection response in a single transmission.
  • the UE 115 and the BS 105 can enter a normal operation stage, where operational data may be exchanged.
  • the BS 105 may schedule the UE 115 for UL and/or DL communications.
  • the BS 105 may transmit UL and/or DL scheduling grants to the UE 115 via a PDCCH.
  • the scheduling grants may be transmitted in the form of DL control information (DCI) .
  • the BS 105 may transmit a DL communication signal (e.g., carrying data) to the UE 115 via a PDSCH according to a DL scheduling grant.
  • the UE 115 may transmit a UL communication signal to the BS 105 via a PUSCH and/or PUCCH according to a UL scheduling grant.
  • the connection may be referred to as an RRC connection.
  • the UE 115 is actively exchanging data with the BS 105, the UE 115 is in an RRC connected state.
  • the UE 115 may initiate an initial network attachment procedure with the network 100.
  • the BS 105 may coordinate with various network entities or fifth generation core (5GC) entities, such as an access and mobility function (AMF) , a serving gateway (SGW) , and/or a packet data network gateway (PGW) , to complete the network attachment procedure.
  • 5GC fifth generation core
  • AMF access and mobility function
  • SGW serving gateway
  • PGW packet data network gateway
  • the BS 105 may coordinate with the network entities in the 5GC to identify the UE, authenticate the UE, and/or authorize the UE for sending and/or receiving data in the network 100.
  • the AMF may assign the UE with a group of tracking areas (TAs) .
  • TAs tracking areas
  • the UE 115 can move around the current TA.
  • the BS 105 may request the UE 115 to update the network 100 with the UE 115’s location periodically.
  • the UE 115 may only report the UE 115’s location to the network 100 when entering a new TA.
  • the TAU allows the network 100 to quickly locate the UE 115 and page the UE 115 upon receiving an incoming data packet or call for the UE 115.
  • the BS 105 may communicate with a UE 115 using HARQ techniques to improve communication reliability, for instance, to provide a URLLC service.
  • the BS 105 may schedule a UE 115 for a PDSCH communication by transmitting a DL grant in a PDCCH.
  • the BS 105 may transmit a DL data packet to the UE 115 according to the schedule in the PDSCH.
  • the DL data packet may be transmitted in the form of a transport block (TB) .
  • TB transport block
  • the UE 115 may transmit a feedback for the DL data packet to the BS 105. In some instances, the UE 115 may transmit the feedback on an acknowledgment resource.
  • the feedback may be an acknowledgement (ACK) indicating that reception of the DL data packet by the UE 115 is successful (e.g., received the DL data without error) or may be a negative-acknowledgement (NACK) indicating that reception of the DL data packet by the UE 115 is unsuccessful (e.g., including an error or failing an error correction) .
  • ACK acknowledgement
  • NACK negative-acknowledgement
  • the UE 115 may transmit a HARQ ACK to the BS 105.
  • the UE 115 may transmit a HARQ NACK to the BS 105.
  • the BS 105 may retransmit the DL data packet to the UE 115.
  • the retransmission may include the same coded version of DL data as the initial transmission. Alternatively, the retransmission may include a different coded version of the DL data than the initial transmission.
  • the UE 115 may apply soft combining to combine the encoded data received from the initial transmission and the retransmission for decoding.
  • the BS 105 and the UE 115 may also apply HARQ for UL communications using substantially similar mechanisms as the DL HARQ.
  • the network 100 may operate over a system BW or a component carrier (CC) BW.
  • the network 100 may partition the system BW into multiple BWPs (e.g., portions) .
  • a BS 105 may dynamically assign a UE 115 to operate over a certain BWP (e.g., a certain portion of the system BW) .
  • the assigned BWP may be referred to as the active BWP.
  • the UE 115 may monitor the active BWP for signaling information from the BS 105.
  • the BS 105 may schedule the UE 115 for UL or DL communications in the active BWP.
  • a BS 105 may assign a pair of BWPs within the CC to a UE 115 for UL and DL communications.
  • the BWP pair may include one BWP for UL communications and one BWP for DL communications.
  • network 100 may be an integrated access backhaul (IAB) network.
  • IAB may refer to a network that uses a part of radio frequency spectrum for backhaul connection of BSs (e.g., BSs 105) instead of optical fibers.
  • the IAB network may employ a multi-hop topology (e.g., a spanning tree) to transport access traffic and backhaul traffic.
  • one of the BSs 115 may be configured with an optical fiber connection in communication with a core network.
  • the BS 105 may function as an anchoring node (e.g., a root node) to transport backhaul traffic between a core network and other BSs 105 in the IAB network.
  • one BS 105 may serve the role of a central node in conjunction with connections to a core network.
  • BSs 105 and the UEs 115 may be referred to as relay nodes in the network.
  • FIG. 2 is a timing diagram illustrating a radio frame structure 200 according to one or more aspects of the present disclosure.
  • the radio frame structure 200 may be employed by BSs such as the BSs 105 and UEs such as the UEs 115 in a network such as the network 100 for communications.
  • the BS may communicate with the UE using time-frequency resources configured as shown in the radio frame structure 200.
  • the x-axes represent time in some arbitrary units and the y-axes represent frequency in some arbitrary units.
  • the transmission frame structure 200 includes a radio frame 201.
  • the duration of the radio frame 201 may vary depending on the aspects. For instance, the radio frame 201 may have a duration of about ten milliseconds.
  • the radio frame 201 includes M number of slots 202, where M may be any suitable positive integer. For instance, M may be about 10.
  • Each slot 202 includes a number of subcarriers 204 in frequency and a number of symbols 206 in time.
  • the number of subcarriers 204 and/or the number of symbols 206 in a slot 202 may vary depending on the aspects, for instance, based on the channel bandwidth, the subcarrier spacing (SCS) , and/or the CP mode.
  • One subcarrier 204 in frequency and one symbol 206 in time forms one resource element (RE) 212 for transmission.
  • a resource block (RB) 210 is formed from a number of consecutive subcarriers 204 in frequency and a number of consecutive symbols 206 in time.
  • a BS may schedule a UE (e.g., UE 115 in FIG. 1) for UL and/or DL communications at a time-granularity of slots 202 or mini-slots 208.
  • Each slot 202 may be time-partitioned into K number of mini-slots 208.
  • Each mini-slot 208 may include one or more symbols 206.
  • the mini-slots 208 in a slot 202 may have variable lengths. For instance, when a slot 202 includes N number of symbols 206, a mini-slot 208 may have a length between one symbol 206 and (N-1) symbols 206.
  • a mini-slot 208 may have a length of about two symbols 206, about four symbols 206, or about seven symbols 206.
  • the BS may schedule UE at a frequency-granularity of a resource block (RB) 210 (e.g., including about 12 subcarriers 204) .
  • RB resource block
  • the BS 105 and the UE 115 may support a unified TCI framework based on DCI.
  • the BS 105 may transmit a DCI indicating a unified TCI state.
  • a unified TCI state may include, for instance, a joint DL/UL common TCI state indicating a common beam for at least one DL channel and at least one UL channel, a joint DL/UL common TCI state indicating a common beam for at least one DL reference signal and at least one UL reference signal, a separate DL common TCI state indicating a common beam for at least two DL channels, a separate DL common TCI state indicating a common beam for at least two DL reference signals, a separate UL common TCI state indicating a common beam for at least two UL channels, and/or a separate UL common TCI state indicating a common beam for at least two UL reference signals.
  • the DL channels may include PDSCH, PDCCH, and/or PBCH.
  • the UL channels may include PUCCH and/or PUSCH.
  • the DL reference signals may include SSBs and/or CSI-RSs.
  • the UL reference signals may include SRSs.
  • the BSs 105 and the UEs 115 may support joint and/or separate DL/UL beam indication (s) in the unified TCI framework.
  • the BSs 105 and the UEs 115 may support Layer-1 (L1) -based beam indication using at least UE-specific (unicast) DCI or indicate joint or separate DL/UL beam indication from the active TCI states.
  • the DCI may include a DCI in DCI format 1_1 or DCI format 1_2.
  • the DCI format 1_1 and/or DCI format 1_2 may be reused for beam indication.
  • the unified TCI framework may support a mechanism for the UE 115 to acknowledge successful decoding of a beam indication.
  • the ACK/NACK of the PDSCH scheduled by the DCI carrying the beam indication may also be used as an ACK for the DCI.
  • the joint DL/UL common TCI state may include at least one source reference signal to provide a reference to the UE 115 for determining QCL and/or spatial filter information.
  • the source reference signal (s) in M separate DL common TCI states may provide QCL information at least for UE-dedicated reception on PDSCH and for UE-dedicated reception on all or a subset of CORESETS in a CC, where M is a number greater than one.
  • the source reference signal (s) in N separate UL common TCI states may provide a reference for determining a common UL transmission spatial filter (s) at least for dynamic-grant based PUSCH or configured-grant based PUSCH and/or all or a subset of dedicated PUCCH resources in a CC, where N is a number greater than one.
  • the UL transmission spatial filter may apply to all SRS resources in resource set (s) configured for antenna switching, codebook-based UL transmissions, and/or non-codebook based UL transmissions.
  • FIG. 3 illustrates a TCI state table 300 according to one or more aspects of the present disclosure.
  • the BS 105 may configure the UE 115 with the TCI state table 300.
  • the UE may determine reference signal resource information and QCL information from the TCI state table 300.
  • Each row in the TCI state table 300 provides references signal resource information and QCL type information for a certain TCI state.
  • the references signal resource information may indicate the location of the time and/or frequency resources (e.g., symbols and/or subcarriers) where a BS 105 may transmit a respective references signal.
  • the QCL type information may indicate a QCL type A, a QCL type B, a QCL type C, and/or a QCL type D.
  • QCL type A may refer to doppler spread, doppler shift, delay spread, and/or average delay channel characteristics.
  • QCL type B may refer to doppler shift and doppler spread channel characteristics.
  • QCL type C may refer to average delay and doppler shift channel characteristics.
  • QCL type D may refer to spatial receive parameters.
  • TCI state 1 defines the source reference signal (s) for a certain physical signal or channel (e.g., PDCCH)
  • the UE 115 can configure its receive beam (s) in the same way it is configured for receiving the CSI-RS with the index #k.
  • TCI state M-1 defines the source reference signal (s) for a certain physical signal or channel (e.g., PDCCH)
  • the UE 115 can configure its receive beam (s) in the same way it is configured for receiving the SSB with the index #p.
  • the UE 115 may configure its receive beams for UL transmission based on the TCI state (s) indicated by the BS 105. For instance, based on the TCI state table 300, the UE may transmit an UL communication using an SSB with index #n, CSI-RS with index #k, and SSB with index #p.
  • the BS 105 may transmit, and the UE 115 may receive, an indication of a new beam direction associated with a beam application time.
  • the beam application time may specify when the UE 115 should apply the new beam direction to reception of DL communications and/or transmission of UL communications.
  • a DCI-based unified TCI indication for multiple channels may enable fast beam switching while saving overhead.
  • a UE 115 may transmit an UL communication including one or more repetitions of a UL communication signal for coverage enhancement.
  • the UL communication signal may include, for instance, a data block, SRS, or PUCCH.
  • the UE 115 may support up to sixteen slot-based PUSCH/PUCCH repetitions.
  • the UE 115 may support up thirty-two slot-based PUSCH/PUCCH repetitions. If the time specified by the beam application time occurs during the UE 115’s transmission of one or more repetitions of a UL communication signal, the UE 115 may switch from a current beam direction to the new beam direction. The UE 115 may perform this switch in a variety of ways.
  • FIG. 3 is discussed in relation to FIGS. 4-6 to illustrate communication schemes for switching from a current beam direction to a new beam direction in DL/UL communications including one or more repetitions of a communication signal.
  • the communication signal may include a UL communication including one or more repetitions of a UL communication signal and/or may include a DL communication including one or more repetitions of a DL communication signal.
  • FIG. 4 illustrates a beam indication communication scheme 400 according to one or more aspects of the present disclosure.
  • a BS 405 and a UE 415 may operate in a channel over a frequency band.
  • the frequency band may be located at any frequency and may span any suitable frequency bandwidth. In some instances, the frequency band may be a mmWave band.
  • one BS 405 and one UE 415 are shown, it should be understood that the scheme 400 may be employed by one or more BSs 405 and one or more 415 in a network such as the network 100.
  • the BS 405 may correspond to and/or be an example of BS 105, BS 505, BS 605, and/or BS 700.
  • the UE 415 may correspond to and/or be an example of UE 115, UE 515, UE 615, and/or UE 800.
  • the x-axis represents time in some arbitrary units.
  • the BS 405 may transmit, to the UE 415, a DCI 402 (via a PDCCH) indicating an UL grant 404 for the UE 415.
  • the UE 415 may receive the UL grant 404.
  • the UE 115 may transmit, based on the UL assignment, an UL communication 406 to the BS 405.
  • the UL communication 406 may include a PUCCH, a PUSCH, SRSs, and/or a MSG3 transmitted in PUSCH.
  • the UE 415 may transmit the UL communication 406 in a current beam direction 430 (as shown in a pattern-filled box having a first pattern) and a second beam direction 432 (as shown in a pattern-filled box having a second pattern) .
  • the current beam direction 430 is different from the new beam direction 432.
  • the UL communication 406 may include one or more repetitions of a UL communication signal.
  • the UE 415 may transmit, in the current beam direction 430, at least one repetition of the one or more repetitions of the UL communication signal.
  • the BS 405 may transmit, to the UE 415, a DCI 410 (via a PDCCH) carrying a TCI state 412 indicating a new beam direction 432 to the UE 115.
  • the new beam direction 432 may be associated with a beam application time 424 that specifies when the UE 115 should apply the new beam direction 432. Based on the beam application time 424, the new beam direction 432 would take effect during a transmission repetition of the UL communication signal in the UL communication 406 (in the current beam direction 430) .
  • the current beam direction 430 is indicated by the UL grant 404. In other instances, the current beam direction 430 corresponds to a previously indicated TCI state.
  • the beam application time 424 may specify a first slot that is located at a first time period after the DCI 410 carrying the TCI state 412, a first slot that is located at a first number of symbols after the DCI 410 carrying the TCI state 412, a first slot that is located at a first time period after an acknowledgment resource of the TCI state 412, or a first slot that is located at a first number of symbols after an acknowledgment resource of the TCI state 412.
  • the UE 115 may transmit an ACK on the acknowledgment resource if reception of the TCI state 412 by the UE 115 is successful (e.g., received the TCI state 412 without error) or may be a NACK indicating that reception of the TCI state 412 by the UE 115 is unsuccessful (e.g., including an error or failing an error correction) .
  • the UE 415 may receive the DCI 410 carrying the TCI state 412 and determine the new beam direction 432 indicated by the TCI state 412.
  • the UE 115 may configure its transmit beams for UL transmission based on the TCI state (s) indicated in the DCI. For instance, based on a previously received TCI state (not shown) indicating the current beam direction 430, the UE 115 may transmit, in the current beam direction 430, the UL communication 406.
  • the UE 415 may apply the new beam direction 432 to the UL communication 406 including the one or more repetitions of a UL communication signal by switching from the current beam direction 430 to the new beam direction 432 and using the new beam direction 432 starting at a particular slot.
  • the particular slot may include a first slot that is located at a first time period after the DCI 410 carrying the TCI state 412, a first slot that is located at a first number of symbols after the DCI 410 carrying the TCI state 412, a first slot that is located at a first time period after an acknowledgment resource of the TCI state 412, or a first slot that is located at a first number of symbols after an acknowledgment resource of the TCI state 412.
  • the UE 415 may transmit the UL communication 406 including one or more repetitions of a UL communication signal by transmitting, in the current beam direction 430 before the beam application time 424, at least a first repetition of the one or more repetitions of the UL communication signal and transmitting, in the new beam direction 430 based on the beam application time 424, at least a second repetition of the one or more repetitions of the UL communication signal.
  • the BS 405 may receive the UL communication 406. By transmitting using the communication scheme 400, the UE 415 may reduce the latency of the beam application. Additionally or alternatively, the UE 415 may use the communication scheme 400 if the UE 415 may only support a single active beam.
  • the UE 415 may use the new beam direction 432 for the set of DL channels and the set of UL channels. If the TCI state 412 includes a joint UL/DL common TCI state indicating a common beam for a set of DL reference signals and a set of UL reference signals, then the UE 415 may use the new beam direction 432 the set of DL reference signals and the set of UL reference signals.
  • the UE 415 may use the new beam direction 432 for at least the two DL channels. If the TCI state 412 includes a separate DL common TCI state indicating a common beam for at least two DL reference signals, then the UE 415 may use the new beam direction 432 for at least the two DL reference signals. If the TCI state 412 includes a separate UL common TCI state indicating a common beam for at least two UL channels, then the UE 415 may use the new beam direction 432 for at least the two UL channels. If the TCI state 412 includes a separate UL common TCI state indicating a common beam for at least two UL reference signals, then the UE 415 may use the new beam direction 432 for at least the two UL reference signals.
  • the DCI 402 and the DCI 410 are shown as being different DCIs, it should be understood that the aforementioned DCIs may be the same DCI.
  • a single DCI may carry the UL grant 404 and the TCI state 412.
  • the BS 405 may transmit the DCI 402 at about the same time or after the BS 405 transmits the DCI 410
  • the UE 415 may receive the DCI 402 at about the same time or after the UE 415 receives the DCI 410.
  • FIG. 4 illustrates the UL communication 406 being scheduled dynamically by a PDCCH DCI, in other instances, the UL communication can be configured by a configured grant.
  • FIG. 4 illustrates the beam application time 424 as occurring during a transmission repetition of a previously indicated TCI state (indicating the current beam direction 430)
  • the beam application time 424 may occur during an ongoing reception of a previously indicated TCI state (indicating the current beam direction 430) .
  • the BS 405 transmits, and the UE 415 receives, a DL communication including one or more repetitions of a DL communication signal.
  • the UE 415 may perform actions similar to or in accordance with the communication scheme 400 to receive the DL communication.
  • the UE 415 may receive the DL communication by receiving, from the current beam direction 430 different from the new beam direction 432 before the beam application time 424, at least a first repetition of the one or more repetitions of the DL communication signal and receiving, from the new beam direction 432 and the beam application time 424, at least a second repetition of the one or more repetitions of the DL communication signal.
  • FIG. 5 illustrates a beam indication communication scheme 500 according to one or more aspects of the present disclosure.
  • a BS 505 and a UE 515 may operate in a channel over a frequency band, as discussed in relation to FIG. 4.
  • the BS 505 may correspond to and/or be an example of BS 105, BS 405, BS 605, and/or BS 700.
  • the UE 515 may correspond to and/or be an example of UE 115, UE 415, UE 605, and/or UE 800.
  • the x-axis represents time in some arbitrary units.
  • the BS 505 may transmit the DCI 402 (via a PDCCH) indicating the UL grant 404 and the DCI 412 carrying the TCI state 412 indicating the new beam direction 432 associated with the beam application time 424, as discussed in relation to FIG. 4.
  • the TCI state 412 indicates that the new beam direction 432 is to be effective during the UE 515’s transmission of the UL communication 406 including one or more repetitions of a UL communication signal.
  • the UE 515 may delay application of the new beam direction 432 until after the UE 515 has completed transmission of the UL communication 406.
  • the UE 515 may postpone the time that the new beam direction 432 becomes effective until a first slot after the UE 515 has completed transmission of the UL communication 406.
  • the UE 515 may apply the new beam direction 432 to a next UL communication 506 after the UL communication 406.
  • Transmission of the UL communication 506 may start at a first slot that is located at a first time period after the DCI 410 carrying the TCI state 412, a first slot that is located at a first number of symbols after the DCI 410 carrying the TCI state 412, a first slot that is located at a first time period after an acknowledgment resource of the TCI state 412, or a first slot that is located at a first number of symbols after an acknowledgment resource of the TCI state 412.
  • the UE 515 may transmit the UL communication 406 including one or more repetitions of a first UL communication signal by transmitting, in the current beam direction 430, at least a first repetition of the one or more repetitions before the beam application time 424 and at least a second repetition of the one or more repetitions after the beam application time 424.
  • the UE 515 may transmit the UL communication 406 by transmitting, in the new beam direction 432, each repetition of the one or more repetitions.
  • the UE 515 may switch from the current beam direction 430 to the new beam direction 432.
  • the UE 515 may transmit, in the new beam direction 432 after the UL communication 406, an UL communication 506, where Time T3 is after Time T2.
  • the BS 505 may receive the UL communication 406 and the UL communication 506.
  • the UE 515 may apply the TCI state 412 indicating the new beam direction 432 to other channels of reception or transmission applicable to the new beam direction 432.
  • FIG. 5 illustrates the beam application time 424 as occurring during a transmission repetition of a previously indicated TCI state (indicating the current beam direction 430)
  • the beam application time 424 may occur during an ongoing reception of a previously indicated TCI state (indicating the current beam direction 430) .
  • the BS 505 transmits, and the UE 515 receives, a first DL communication including one or more repetitions of a DL communication signal.
  • the UE 515 may perform actions similar to or in accordance with the communication scheme 500 to receive the first DL communication.
  • the UE 515 may receive, from the current beam direction 430 different from the new beam direction 432, the first DL communication including one or more repetitions of a first DL communication signal, where at least a first repetition of the one or more repetitions is received before the beam application time 424 and at least a second repetition of the one or more repetitions is received after the beam application time 424. Accordingly, the UE 515 may receive, from the current beam direction 430, each repetition of the one or more repetitions included in the first DL communication and may switch from the current beam direction 430 to the new beam direction 432 for a second DL communication. The UE 515 may receive, from the new beam direction 432, the second DL communication.
  • FIG. 6 illustrates a beam indication communication scheme 600 according to one or more aspects of the present disclosure.
  • a BS 605 and a UE 615 may operate in a channel over the frequency band, as discussed in relation to FIG. 4.
  • the BS 605 may correspond to and/or be an example of BS 105, BS 405, BS 505, and/or BS 700.
  • the UE 615 may correspond to and/or be an example of UE 115, UE 415, UE 515, and/or UE 800.
  • the x-axis represents time in some arbitrary units.
  • the BS 605 may transmit the DCI 402 (via a PDCCH) indicating the UL grant 404 and the DCI 412 carrying the TCI state 412 indicating the new beam direction 432 associated with the beam application time 424, as discussed in relation to FIG. 4.
  • the TCI state 412 indicates that the new beam direction 432 is to be effective during the UE 615’s transmission of the UL communication 406 including one or more repetitions of a UL communication signal.
  • the UE 615 may cancel transmission of the remaining repetitions of the UL communication 406 at a first slot after the beam application time 424.
  • the canceled transmission is indicated by the box with dashed lines.
  • the UE 615 may apply the new beam direction 432 to a next UL communication 606 by switching from the current beam direction 430 to the new beam direction 432 after transmitting the UL communication 406.
  • the UE 615 may transmit the UL communication 406 including one or more repetitions of a first UL communication signal by transmitting, in the current beam direction 430 different from the new beam direction 432 before the beam application time 424, the UL communication 406 including one or more repetitions of a first UL communication signal less than a number of repetitions associated with a grant (e.g., UL grant) for UL communication 406 and refraining from transmitting at least a second repetition of the one or more repetitions of the first UL communication signal.
  • the UE 615 may transmit, in the new beam direction 432 based on the beam application time 424, an UL communication 606 after completing transmission of the UL communication 406, where time T3 is after time T2.
  • the BS 605 may receive the UL communication 406 and the UL communication 606.
  • FIG. 6 illustrates the beam application time 424 as occurring during a transmission repetition of a previously indicated TCI state (indicating the current beam direction 430)
  • the beam application time 424 may occur during an ongoing reception of a previously indicated TCI state (indicating the current beam direction 430) .
  • the BS 605 transmits, and the UE 615 receives, a first DL communication including one or more repetitions of a DL communication signal.
  • the UE 615 may perform actions similar to or in accordance with the communication scheme 600 to receive the first DL communication.
  • the UE 615 may receive, from the current beam direction 430 different from the new beam direction 432 before the beam application time 424, the first DL communication including one or more repetitions of a first DL communication signal less than a number of repetitions associated with a grant (e.g., DL grant) for the first DL communication.
  • the UE 615 may cancel the remaining repetitions after the beam application time 424. Accordingly, the UE 615 may refrain from communicating at least a second repetition of the one or more repetitions of the first DL communication signal and may switch from the current beam direction 430 to the new beam direction 432 for a second DL communication.
  • the UE 515 may receive, from the new beam direction 432, the second DL communication.
  • FIG. 7 is a block diagram of a BS 700 according to one or more aspects of the present disclosure.
  • the BS 700 may be a BS 105, BS 405, BS 505, and/or BS 605 as discussed in FIGS. 1-6 and 12-14.
  • the BS 700 may include a processor 702, a memory 704, a beam module 708, a transceiver 710 including a modem subsystem 712 and a radio frequency (RF) unit 714, and one or more antennas 716.
  • RF radio frequency
  • the processor 702 may have various features as a specific-type processor. For instance, these may include a central processing unit (CPU) , a digital signal processor (DSP) , an application specific integrated circuit (ASIC) , a controller, a field programmable gate array (FPGA) device, another hardware device, a firmware device, or any combination thereof configured to perform the operations described herein.
  • the processor 702 may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.
  • the memory 704 may include a cache memory (e.g., a cache memory of the processor 702) , random access memory (RAM) , magnetoresistive RAM (MRAM) , read-only memory (ROM) , programmable read-only memory (PROM) , erasable programmable read only memory (EPROM) , electrically erasable programmable read only memory (EEPROM) , flash memory, a solid state memory device, one or more hard disk drives, memristor-based arrays, other forms of volatile and non-volatile memory, or a combination of different types of memory.
  • the memory 704 may include a non-transitory computer-readable medium.
  • the memory 704 may store instructions 706.
  • the instructions 706 may include instructions that, when executed by the processor 702, cause the processor 702 to perform operations described herein, for instance, aspects of FIGS. 1-6 and 12-14. Instructions 706 may also be referred to as program code.
  • the program code may be for causing a wireless communication device to perform these operations, for instance by causing one or more processors (such as processor 702) to control or command the wireless communication device to do so.
  • the terms “instructions” and “code” should be interpreted broadly to include any type of computer-readable statement (s) .
  • the terms “instructions” and “code” may refer to one or more programs, routines, sub-routines, functions, procedures, etc. “Instructions” and “code” may include a single computer-readable statement or many computer-readable statements.
  • the beam module 708 may be implemented via hardware, software, or combinations thereof.
  • the beam module 708 may be implemented as a processor, circuit, and/or instructions 706 stored in the memory 704 and executed by the processor 702.
  • the beam module 708 can be integrated within the modem subsystem 712.
  • the beam module 708 can be implemented by a combination of software components (e.g., executed by a DSP or a general processor) and hardware components (e.g., logic gates and circuitry) within the modem subsystem 712.
  • the beam module 708 may communicate with one or more components of the BS 700 to implement various aspects of the present disclosure, for instance, aspects of FIGS. 1-6 and 12-14.
  • the beam module 708 may transmit, to a UE, an indication of a first beam direction associated with a beam application time.
  • the beam module 708 may further be configured to receive an UL communication including one or more repetitions of a UL communication signal.
  • the beam module 708 may receive the UL communication by receiving, based on a second beam direction different from the first beam direction before the beam application time, at least a first repetition of the one or more repetitions of the UL communication signal and receiving, based on the first beam direction and on the beam application time, at least a second repetition of the one or more repetitions of the UL communication signal.
  • the beam module 708 may transmit, to a UE, an indication of a first beam direction associated with a beam application time.
  • the beam module 708 may further be configured to receive, based on a second beam direction different from the first beam direction, a first UL communication including one or more repetitions of a first UL communication signal, where at least a first repetition of the one or more repetitions is received before the beam application time and at least a second repetition of the one or more repetitions is received after the beam application time.
  • the beam module 708 may further be configured to receive, based on the first beam direction, a second UL communication after receiving the first UL communication.
  • the beam module 708 may transmit, to a UE, an indication of a first beam direction associated with a beam application time.
  • the beam module 708 may further be configured to receive, based on a second beam direction different from the first beam direction before the beam application time, a first UL communication including one or more repetitions of a first UL communication signal less than a number of repetitions associated with a UL grant for the first UL communication.
  • the beam module 708 may further be configured to refrain from receiving at least a second repetition of the UL communication signal associated with the UL grant after the beam application time.
  • the beam module 708 may further be configured to receive, based on the first beam direction and the beam application time, a second UL communication.
  • the transceiver 710 may include the modem subsystem 712 and the RF unit 714.
  • the transceiver 710 can be configured to communicate bi-directionally with other devices, such as the UE 115, UE 415, UE 515, UE 615, UE 800 and/or another core network element.
  • the modem subsystem 712 may be configured to modulate and/or encode data according to a modulation and coding scheme (MCS) , e.g., a low-density parity check (LDPC) coding scheme, a turbo coding scheme, a convolutional coding scheme, a digital beamforming scheme, etc.
  • MCS modulation and coding scheme
  • LDPC low-density parity check
  • the RF unit 714 may be configured to process (e.g., perform analog to digital conversion or digital to analog conversion, etc. ) modulated/encoded data (DCI, TCI state, an indication of a beam direction associated with a beam application time, communication signals, data signals, etc. ) from the modem subsystem 712 (on outbound transmissions) .
  • the RF unit 714 may be further configured to perform analog beamforming in conjunction with the digital beamforming.
  • the modem subsystem 712 and/or the RF unit 714 may be separate devices that are coupled together at the BS 700 to enable the BS 700 to communicate with other devices.
  • the RF unit 714 may provide the modulated and/or processed data, e.g. data packets (or, more generally, data messages that may contain one or more data packets and other information) , to the antennas 716 for transmission to one or more other devices.
  • the antennas 716 may further receive data messages transmitted from other devices and provide the received data messages for processing and/or demodulation at the transceiver 710.
  • the transceiver 710 may provide the demodulated and decoded data (e.g., communication signals, data signals, etc. ) to the beam module 708 for processing.
  • the antennas 716 may include multiple antennas of similar or different designs in order to sustain multiple transmission links.
  • the transceiver 710 is configured to transmit, to a UE, an indication of a first beam direction associated with a beam application time.
  • the transceiver 710 is further configured to receive an UL communication including one or more repetitions of a UL communication signal.
  • the transceiver 710 is configured to receive the UL communication by, for instance, receiving, based on a second beam direction different from the first beam direction before the beam application time, at least a first repetition of the one or more repetitions of the UL communication signal and receiving, based on the first beam direction and on the beam application time, at least a second repetition of the one or more repetitions of the UL communication signal.
  • the transceiver 710 is configured to transmit, to a UE, an indication of a first beam direction associated with a beam application time.
  • the transceiver 710 is further configured to receive, based on a second beam direction different from the first beam direction, a first UL communication including one or more repetitions of a first UL communication signal, wherein at least a first repetition of the one or more repetitions is received before the beam application time and at least a second repetition of the one or more repetitions is received after the beam application time.
  • the transceiver 710 is further configured to receive, based on the first beam direction, a second UL communication after receiving the first UL communication.
  • the transceiver 710 is configured to transmit, to a UE, an indication of a first beam direction associated with a beam application time.
  • the transceiver 710 is further configured to receive, based on a second beam direction different from the first beam direction before the beam application time, a first UL communication including one or more repetitions of a first UL communication signal less than a number of repetitions associated with a UL grant for the first UL communication.
  • the transceiver 710 is further configured to refrain from receiving at least a second repetition of the UL communication signal associated with the UL grant after the beam application time.
  • the transceiver 710 is further configured to receive, based on the first beam direction and the beam application time, a second UL communication.
  • FIG. 8 is a block diagram of a UE 800 according to one or more aspects of the present disclosure.
  • the UE 800 may be, for instance, a UE 115, UE 415, UE 515, UE 615 as discussed in FIGS. 1-6 and 9-11.
  • the UE 800 may include a processor 802, a memory 804, a beam module 808, a transceiver 810 including a modem subsystem 812 and an RF unit 814, and one or more antennas 816.
  • These elements may be coupled with one another.
  • the term “coupled” may refer to directly or indirectly coupled or connected to one or more intervening elements. For instance, these elements may be in direct or indirect communication with each other, for instance via one or more buses.
  • the processor 802 may include a CPU, a DSP, an ASIC, a controller, a FPGA device, another hardware device, a firmware device, or any combination thereof configured to perform the operations described herein.
  • the processor 802 may also be implemented as a combination of computing devices, e.g., a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.
  • the memory 804 may include a cache memory (e.g., a cache memory of the processor 802) , RAM, MRAM, ROM, PROM, EPROM, EEPROM, flash memory, solid state memory device, hard disk drives, other forms of volatile and non-volatile memory, or a combination of different types of memory.
  • the memory 804 includes a non-transitory computer-readable medium.
  • the memory 804 may store, or have recorded thereon, instructions 806.
  • the instructions 806 may include instructions that, when executed by the processor 802, cause the processor 802 to perform the operations described herein with reference to a UE 115 or an anchor in connection with aspects of the present disclosure, for instance, aspects of FIGS. 1-6 and 9-11. Instructions 806 may also be referred to as code, which may be interpreted broadly to include any type of computer-readable statement (s) as discussed above with respect to FIG. 7.
  • the beam module 808 may be implemented via hardware, software, or combinations thereof.
  • the beam module 808 may be implemented as a processor, circuit, and/or instructions 806 stored in the memory 804 and executed by the processor 802.
  • the beam module 808 can be integrated within the modem subsystem 812.
  • the beam module 808 can be implemented by a combination of software components (e.g., executed by a DSP or a general processor) and hardware components (e.g., logic gates and circuitry) within the modem subsystem 812.
  • the beam module 808 may communicate with one or more components of the wireless communication device 800 to implement various aspects of the present disclosure, for instance, aspects of FIGS. 1-6 and 9-11.
  • the beam module 808 may be configured to receive, from a BS, an indication of a first beam direction associated with a beam application time.
  • the beam module 808 may be further configured to communicate a first communication including one or more repetitions of a communication signal.
  • the communication signal may include a UL communication signal or a DL communication signal.
  • the beam module 808 may be configured to communicate the first communication by communicating, based on a second beam direction different from the first beam direction before the beam application time, at least a first repetition of the one or more repetitions of the communication signal and communicating, based on the first beam direction and the beam application time, at least a second repetition of the one or more repetitions of the communication signal.
  • the beam module 808 may be configured to receive, from a BS, an indication of a first beam direction associated with a beam application time.
  • the beam module 808 may be further configured to communicate, based on a second beam direction different from the first beam direction, a first communication including one or more repetitions of a first communication signal, where at least a first repetition of the one or more repetitions is communicated before the beam application time and at least a second repetition of the one or more repetitions is communicated after the beam application time.
  • the beam module 808 may be further configured to communicate, based on the first beam direction, a second communication after communicating the first communication.
  • the beam module 808 may be configured to receive, from a BS, an indication of a first beam direction associated with a beam application time.
  • the beam module 808 may be further configured to communicate, based on a second beam direction different from the first beam direction before the beam application time, a first communication including one or more repetitions of a first communication signal less than a number of repetitions associated with a grant for the first communication.
  • the beam module 808 may be further configured to refrain from communicating at least a second repetition of the one or more repetitions of the first communication signal.
  • the beam module 808 may be further configured to communicate, based on the first beam direction and on the beam application time, a second communication after communicating the first communication.
  • the transceiver 810 may include the modem subsystem 812 and the RF unit 814.
  • the transceiver 810 can be configured to communicate bi-directionally with other devices, such as the BSs 105 and 700.
  • the modem subsystem 812 may be configured to modulate and/or encode the data from the memory 804 and/or the beam module 808 according to a MCS, e.g., a LDPC coding scheme, a turbo coding scheme, a convolutional coding scheme, a digital beamforming scheme, etc.
  • the RF unit 814 may be configured to process (e.g., perform analog to digital conversion or digital to analog conversion, etc.
  • modulated/encoded data e.g., communication signals, data signals, etc., etc.
  • the RF unit 814 may be further configured to perform analog beamforming in conjunction with the digital beamforming. Although shown as integrated together in transceiver 810, the modem subsystem 812 and the RF unit 814 may be separate devices that are coupled together at the UE 800 to enable the UE 800 to communicate with other devices.
  • the RF unit 814 may provide the modulated and/or processed data, e.g. data packets (or, more generally, data messages that may contain one or more data packets and other information) , to the antennas 816 for transmission to one or more other devices.
  • the antennas 816 may further receive data messages transmitted from other devices.
  • the antennas 816 may provide the received data messages for processing and/or demodulation at the transceiver 810.
  • the transceiver 810 may provide the demodulated and decoded data (e.g., DCI, TCI state, an indication of a beam direction associated with a beam application time, communication signals, data signals, etc. ) to the beam module 808 for processing.
  • the antennas 816 may include multiple antennas of similar or different designs in order to sustain multiple transmission links.
  • the transceiver 810 may be configured to receive, from a BS, an indication of a first beam direction associated with a beam application time.
  • the transceiver 810 may be further configured to communicate a first communication including one or more repetitions of a communication signal.
  • the transceiver 810 may be configured to communicate the first communication by communicating, based on a second beam direction different from the first beam direction before the beam application time, at least a first repetition of the one or more repetitions of the communication signal and communicating, based on the first beam direction and the beam application time, at least a second repetition of the one or more repetitions of the communication signal.
  • the transceiver 810 may be configured to receive, from a BS, an indication of a first beam direction associated with a beam application time.
  • the transceiver 810 may be further configured to communicate, based on a second beam direction different from the first beam direction, a first communication including one or more repetitions of a first communication signal, where at least a first repetition of the one or more repetitions is communicated before the beam application time and at least a second repetition of the one or more repetitions is communicated after the beam application time.
  • the transceiver 810 may be further configured to communicate, based on the first beam direction, a second communication after communicating the first communication.
  • the transceiver 810 may be configured to receive, from a BS, an indication of a first beam direction associated with a beam application time.
  • the transceiver 810 may be further configured to communicate, based on a second beam direction different from the first beam direction before the beam application time, a first communication including one or more repetitions of a first communication signal less than a number of repetitions associated with a grant for the first communication.
  • the transceiver 810 may be further configured to refrain from communicating at least a second repetition of the one or more repetitions of the first communication signal.
  • the transceiver 810 may be further configured to communicate, based on the first beam direction and on the beam application time, a second communication after communicating the first communication.
  • FIG. 9 is a flow diagram illustrating a beam indication communication method 900 according to one or more aspects of the present disclosure.
  • a computing device e.g., a processor, processing circuit, and/or other suitable component
  • the wireless communication device may be a UE 800.
  • the UE 800 may utilize one or more components, such as the processor 802, the memory 804, the beam module 808, the transceiver 810, the modem 812, the RF unit 814, and/or the one or more antennas 816, to execute the blocks of method 900.
  • the method 900 may employ similar mechanisms as described in FIGS. 1-6 and 8.
  • the method 900 includes a number of enumerated blocks, but aspects of the method 900 may include additional blocks before, after, and in between the enumerated blocks. In some aspects, one or more of the enumerated blocks may be omitted or performed in a different order.
  • the UE 800 receives, from a BS, an indication of a first beam direction associated with a beam application time.
  • the beam application time specifies a first slot that is located at a first time period after the indication.
  • the beam application time specifies a first slot that is located at a first number of symbols after the indication.
  • the beam application time specifies a first slot that is located at a first time period after an acknowledgment resource of the indication.
  • the beam application time specifies a first slot that is located at a first number of symbols after an acknowledgment resource of the indication.
  • the UE 800 may receive the indication by receiving a DCI carrying a unified TCI state.
  • the unified TCI state may include the indication.
  • the TCI state may include a joint UL/DL common TCI state indicating a common beam for at least one DL channel and at least one UL channel.
  • the TCI state may include a joint UL/DL common TCI state indicating a common beam for at least one DL reference signal and at least one UL reference signal.
  • the TCI state may include a separate DL common TCI state indicating a common beam for at least two DL channels.
  • the TCI state may include a separate DL common TCI state indicating a common beam for at least two DL reference signals.
  • the TCI state may include a separate UL common TCI state indicating a common beam for at least two UL channels. In some instances, the TCI state may include a separate UL common TCI state indicating a common beam for at least two UL reference signals.
  • the means for performing the operations of block 902 can, but do not necessarily, include the processor 802, the memory 804, the beam module 808, the transceiver 810, the modem 812, the RF unit 814, and/or the one or more antennas 816 with reference to FIG. 8.
  • the UE 800 communicates a first communication including one or more repetitions of a communication signal.
  • the block 904 may include a block 906 and a block 908.
  • the UE 800 communicates, based on a second beam direction different from the first beam direction before the beam application time, at least a first repetition of the one or more repetitions of the communication signal.
  • the UE 800 communicates, based on the first beam direction and the beam application time, at least a second repetition of the one or more repetitions of the communication signal.
  • the means for performing the operations of block 906 and/or block 908 can, but do not necessarily, include the processor 802, the memory 804, the beam module 808, the transceiver 810, the modem 812, the RF unit 814, and/or the one or more antennas 816 with reference to FIG. 8.
  • the first communication includes an UL communication, where the UE 800 communicates at least the first repetition by transmitting, in the second beam direction before the beam application time, at least the first repetition of the one or more repetitions of the communication signal, and where the UE 800 communicates at least the second repetition by transmitting, in the first beam direction based on the beam application time, at least the second repetition.
  • the first communication includes a DL communication, where the UE 800 communicates at least the first repetition by receiving, from the second beam direction before the beam application time, at least the first repetition of the one or more repetitions of the communication signal, and where the UE 800 communicates at least the second repetition by receiving, from the first beam direction based on the beam application time, at least the second repetition.
  • FIG. 10 is a flow diagram illustrating a beam indication communication method 1000 according to one or more aspects of the present disclosure.
  • a computing device e.g., a processor, processing circuit, and/or other suitable component
  • the wireless communication device may be a UE 800.
  • the UE 800 may utilize one or more components, such as the processor 802, the memory 804, the beam module 808, the transceiver 810, the modem 812, the RF unit 814, and/or the one or more antennas 816, to execute the blocks of method 1000.
  • the method 1000 may employ similar mechanisms as described in FIGS. 1-6 and 8.
  • the method 1000 includes a number of enumerated blocks, but aspects of the method 1000 may include additional blocks before, after, and in between the enumerated blocks. In some aspects, one or more of the enumerated blocks may be omitted or performed in a different order.
  • the UE 800 receives, from a BS, an indication of a first beam direction associated with a beam application time.
  • the beam application time specifies a first slot that is located at a first number of symbols after the indication.
  • the beam application time specifies a first slot that is located at a first time period after an acknowledgment resource of the indication.
  • the beam application time specifies a first slot that is located at a first number of symbols after an acknowledgment resource of the indication.
  • the UE 800 may receive the indication by receiving a DCI carrying a unified TCI state.
  • the unified TCI state may include the indication.
  • the TCI state may include a joint UL/DL common TCI state indicating a common beam for at least one DL channel and at least one UL channel.
  • the TCI state may include a joint UL/DL common TCI state indicating a common beam for at least one DL reference signal and at least one UL reference signal.
  • the TCI state may include a separate DL common TCI state indicating a common beam for at least two DL channels.
  • the TCI state may include a separate DL common TCI state indicating a common beam for at least two DL reference signals.
  • the TCI state may include a separate UL common TCI state indicating a common beam for at least two UL channels. In some instances, the TCI state may include a separate UL common TCI state indicating a common beam for at least two UL reference signals.
  • the means for performing the operations of block 1002 can, but do not necessarily, include the processor 802, the memory 804, the beam module 808, the transceiver 810, the modem 812, the RF unit 814, and/or the one or more antennas 816 with reference to FIG. 8.
  • the UE 800 communicates, based on a second beam direction different from the first beam direction, a first communication including one or more repetitions of a first communication signal, where at least a first repetition of the one or more repetitions is communicated before the beam application time and at least a second repetition of the one or more repetitions is communicated after the beam application time.
  • the means for performing the operations of block 1004 can, but do not necessarily, include the processor 802, the memory 804, the beam module 808, the transceiver 810, the modem 812, the RF unit 814, and/or the one or more antennas 816 with reference to FIG. 8.
  • the UE 800 communicates, based on the first beam direction, a second communication after communicating the first communication.
  • the means for performing the operations of block 1006 can, but do not necessarily, include the processor 802, the memory 804, the beam module 808, the transceiver 810, the modem 812, the RF unit 814, and/or the one or more antennas 816 with reference to FIG. 8.
  • the first communication includes a UL communication
  • the UE 800 communicates the first communication by transmitting, in the second beam direction, each repetition of the one or more repetitions.
  • the first communication includes a first UL communication and the second communication includes a second UL communication.
  • the UE 800 may communicate the first communication by transmitting, in the second beam direction, the first UL communication, where at least the first repetition is transmitted before the beam application time and at least the second repetition is transmitted after the beam application time.
  • the UE 800 may communicate the second communication by transmitting, in the first beam direction, the second UL communication after transmitting the first UL communication.
  • the first communication includes a DL communication
  • the UE 800 communicates the first communication by receiving, from the second beam direction, each repetition of the one or more repetitions.
  • the first communication includes a first DL communication and the second communication includes a second DL communication.
  • the UE 800 may communicate the first communication by receiving, from the second beam direction, the first DL communication, where at least the first repetition is transmitted before the beam application time and at least the second repetition is transmitted after the beam application time.
  • the UE 800 may communicate the second communication by receiving, from the first beam direction, the second DL communication after receiving the first DL communication.
  • FIG. 11 is a flow diagram illustrating a beam indication communication method 1100 according to one or more aspects of the present disclosure. Aspects of the method 1100 can be executed by a computing device (e.g., a processor, processing circuit, and/or other suitable component) of a wireless communication device or other suitable means for performing the blocks.
  • the wireless communication device may be a UE 800.
  • the UE 800 may utilize one or more components, such as the processor 802, the memory 804, the beam module 808, the transceiver 810, the modem 812, the RF unit 814, and/or the one or more antennas 816, to execute the blocks of method 1100.
  • the method 1100 may employ similar mechanisms as described in FIGS. 1-6 and 8.
  • the method 1100 includes a number of enumerated blocks, but aspects of the method 1100 may include additional blocks before, after, and in between the enumerated blocks. In some aspects, one or more of the enumerated blocks may be omitted or performed in a different order.
  • the UE 800 receives, from a BS, an indication of a first beam direction associated with a beam application time.
  • the beam application time specifies a first slot that is located at a first number of symbols after the indication.
  • the beam application time specifies a first slot that is located at a first time period after an acknowledgment resource of the indication.
  • the beam application time specifies a first slot that is located at a first number of symbols after an acknowledgment resource of the indication.
  • the UE 800 may receive the indication by receiving a DCI carrying a unified TCI state.
  • the unified TCI state may include the indication.
  • the TCI state may include a joint UL/DL common TCI state indicating a common beam for at least one DL channel and at least one UL channel.
  • the TCI state may include a joint UL/DL common TCI state indicating a common beam for at least one DL reference signal and at least one UL reference signal.
  • the TCI state may include a separate DL common TCI state indicating a common beam for at least two DL channels.
  • the TCI state may include a separate DL common TCI state indicating a common beam for at least two DL reference signals.
  • the TCI state may include a separate UL common TCI state indicating a common beam for at least two UL channels. In some instances, the TCI state may include a separate UL common TCI state indicating a common beam for at least two UL reference signals.
  • the means for performing the operations of block 1102 can, but do not necessarily, include the processor 802, the memory 804, the beam module 808, the transceiver 810, the modem 812, the RF unit 814, and/or the one or more antennas 816 with reference to FIG. 8.
  • the UE 800 communicates, based on a second beam direction different from the first beam direction before the beam application time, a first communication including one or more repetitions of a first communication signal less than a number of repetitions associated with a grant for the first communication.
  • the means for performing the operations of block 1104 can, but do not necessarily, include the processor 802, the memory 804, the beam module 808, the transceiver 810, the modem 812, the RF unit 814, and/or the one or more antennas 816 with reference to FIG. 8.
  • the UE 800 refrains from communicating at least a second repetition of the one or more repetitions of the first communication signal.
  • the means for performing the operations of block 1106 can, but do not necessarily, include the processor 802, the memory 804, the beam module 808, the transceiver 810, the modem 812, the RF unit 814, and/or the one or more antennas 816 with reference to FIG. 8.
  • the UE 800 communicates, based on the first beam direction and on the beam application time, a second communication after communicating the first communication.
  • the means for performing the operations of block 1108 can, but do not necessarily, include the processor 802, the memory 804, the beam module 808, the transceiver 810, the modem 812, the RF unit 814, and/or the one or more antennas 816 with reference to FIG. 8.
  • the first communication includes a first UL communication
  • the second communication includes a second UL communication.
  • the UE 800 may communicate the first communication by transmitting, in the second beam direction before the beam application time, the first UL communication including one or more repetitions of the first communication signal less than the number of repetitions associated with a UL grant for the first UL communication.
  • the UE 800 may refrain from transmitting at least the second repetition.
  • the UE 800 may communicate the second communication by transmitting, in the first beam direction based on the beam application time, the second UL communication.
  • the first communication includes a first DL communication
  • the second communication includes a second DL communication.
  • the UE 800 may communicate the first communication by receiving, from the second beam direction before the beam application time, the first DL communication including one or more repetitions of the first communication signal less than the number of repetitions associated with a DL grant for the first DL communication.
  • the UE 800 may refrain from receiving at least the second repetition.
  • the UE 800 may communicate the second communication by receiving, from the first beam direction based on the beam application time, the second DL communication.
  • FIG. 12 is a flow diagram illustrating a beam indication communication method 1200 according to one or more aspects of the present disclosure.
  • a computing device e.g., a processor, processing circuit, and/or other suitable component
  • the wireless communication device may be a BS 700.
  • the BS 700 may utilize one or more components, such as the processor 702, the memory 704, the beam module 708, the transceiver 710, the modem 712, the RF unit 714, and/or the one or more antennas 716, to execute the blocks of method 1200.
  • the method 1200 may employ similar mechanisms as described in aspects of, for example, FIGS. 1-7.
  • the method 1200 includes a number of enumerated blocks, but aspects of the method 1200 may include additional blocks before, after, and in between the enumerated blocks. In some aspects, one or more of the enumerated blocks may be omitted or performed in a different order.
  • the BS 700 transmits, to a UE, an indication of a first beam direction associated with a beam application time.
  • the beam application time specifies a first slot that is located at a first number of symbols after the indication.
  • the beam application time specifies a first slot that is located at a first time period after an acknowledgment resource of the indication.
  • the beam application time specifies a first slot that is located at a first number of symbols after an acknowledgment resource of the indication.
  • the BS 700 may transmit the indication by transmitting a DCI carrying a unified TCI state.
  • the unified TCI state may include the indication.
  • the TCI state may include a joint UL/DL common TCI state indicating a common beam for at least one DL channel and at least one UL channel.
  • the TCI state may include a joint UL/DL common TCI state indicating a common beam for at least one DL reference signal and at least one UL reference signal.
  • the TCI state may include a separate DL common TCI state indicating a common beam for at least two DL channels.
  • the TCI state may include a separate DL common TCI state indicating a common beam for at least two DL reference signals.
  • the TCI state may include a separate UL common TCI state indicating a common beam for at least two UL channels. In some instances, the TCI state may include a separate UL common TCI state indicating a common beam for at least two UL reference signals.
  • the means for performing the operations of block 1202 can, but do not necessarily, include the processor 702, the memory 704, the beam module 708, the transceiver 710, the modem 712, the RF unit 714, and/or the one or more antennas 716 with reference to FIG. 7.
  • the BS 700 receives an UL communication including one or more repetitions of a UL communication signal.
  • the block 1204 may include a block 1206 and a block 1208.
  • the BS 700 receives, based on a second beam direction different from the first beam direction before the beam application time, at least a first repetition of the one or more repetitions of the UL communication signal.
  • the BS 700 receives, based on the first beam direction and on the beam application time, at least a second repetition of the one or more repetitions of the UL communication signal.
  • the means for performing the operations of block 1206 and/or block 1208 can, but do not necessarily, include the processor 702, the memory 704, the beam module 708, the transceiver 710, the modem 712, the RF unit 714, and/or the one or more antennas 716 with reference to FIG. 7.
  • FIG. 13 is a flow diagram illustrating a beam indication communication method 1300 according to one or more aspects of the present disclosure.
  • a computing device e.g., a processor, processing circuit, and/or other suitable component
  • the wireless communication device may be a BS 700.
  • the BS 700 may utilize one or more components, such as the processor 702, the memory 704, the beam module 708, the transceiver 710, the modem 712, the RF unit 714, and/or the one or more antennas 716, to execute the blocks of method 1300.
  • the method 1300 may employ similar mechanisms as described in aspects of, for example, FIGS. 1-7.
  • the method 1300 includes a number of enumerated blocks, but aspects of the method 1300 may include additional blocks before, after, and in between the enumerated blocks. In some aspects, one or more of the enumerated blocks may be omitted or performed in a different order.
  • the BS 700 transmits, to a UE, an indication of a first beam direction associated with a beam application time.
  • the beam application time specifies a first slot that is located at a first number of symbols after the indication.
  • the beam application time specifies a first slot that is located at a first time period after an acknowledgment resource of the indication.
  • the beam application time specifies a first slot that is located at a first number of symbols after an acknowledgment resource of the indication.
  • the BS 700 may transmit the indication by transmitting a DCI carrying a unified TCI state.
  • the unified TCI state may include the indication.
  • the TCI state may include a joint UL/DL common TCI state indicating a common beam for at least one DL channel and at least one UL channel.
  • the TCI state may include a joint UL/DL common TCI state indicating a common beam for at least one DL reference signal and at least one UL reference signal.
  • the TCI state may include a separate DL common TCI state indicating a common beam for at least two DL channels.
  • the TCI state may include a separate DL common TCI state indicating a common beam for at least two DL reference signals.
  • the TCI state may include a separate UL common TCI state indicating a common beam for at least two UL channels. In some instances, the TCI state may include a separate UL common TCI state indicating a common beam for at least two UL reference signals.
  • the means for performing the operations of block 1302 can, but do not necessarily, include the processor 702, the memory 704, the beam module 708, the transceiver 710, the modem 712, the RF unit 714, and/or the one or more antennas 716 with reference to FIG. 7.
  • the BS 700 receives, based on a second beam direction different from the first beam direction, a first UL communication including one or more repetitions of a first UL communication signal, where at least a first repetition of the one or more repetitions is received before the beam application time and at least a second repetition of the one or more repetitions is received after the beam application time.
  • the means for performing the operations of block 1304 can, but do not necessarily, include the processor 702, the memory 704, the beam module 708, the transceiver 710, the modem 712, the RF unit 714, and/or the one or more antennas 716 with reference to FIG. 7.
  • the BS 700 receives, based on the first beam direction, a second UL communication after receiving the first UL communication.
  • the means for performing the operations of block 1306 can, but do not necessarily, include the processor 702, the memory 704, the beam module 708, the transceiver 710, the modem 712, the RF unit 714, and/or the one or more antennas 716 with reference to FIG. 7.
  • FIG. 14 is a flow diagram illustrating a beam indication communication method 1400 according to one or more aspects of the present disclosure.
  • a computing device e.g., a processor, processing circuit, and/or other suitable component
  • the wireless communication device may be a BS 700.
  • the BS 700 may utilize one or more components, such as the processor 702, the memory 704, the beam module 708, the transceiver 710, the modem 712, the RF unit 714, and/or the one or more antennas 716, to execute the blocks of method 1400.
  • the method 1400 may employ similar mechanisms as described in aspects of, for example, FIGS. 1-7.
  • the method 1400 includes a number of enumerated blocks, but aspects of the method 1400 may include additional blocks before, after, and in between the enumerated blocks. In some aspects, one or more of the enumerated blocks may be omitted or performed in a different order.
  • the BS 700 transmits, to a UE, an indication of a first beam direction associated with a beam application time.
  • the beam application time specifies a first slot that is located at a first number of symbols after the indication.
  • the beam application time specifies a first slot that is located at a first time period after an acknowledgment resource of the indication.
  • the beam application time specifies a first slot that is located at a first number of symbols after an acknowledgment resource of the indication.
  • the BS 700 may transmit the indication by transmitting a DCI carrying a unified TCI state.
  • the unified TCI state may include the indication.
  • the TCI state may include a joint UL/DL common TCI state indicating a common beam for at least one DL channel and at least one UL channel.
  • the TCI state may include a joint UL/DL common TCI state indicating a common beam for at least one DL reference signal and at least one UL reference signal.
  • the TCI state may include a separate DL common TCI state indicating a common beam for at least two DL channels.
  • the TCI state may include a separate DL common TCI state indicating a common beam for at least two DL reference signals.
  • the TCI state may include a separate UL common TCI state indicating a common beam for at least two UL channels. In some instances, the TCI state may include a separate UL common TCI state indicating a common beam for at least two UL reference signals.
  • the means for performing the operations of block 1402 can, but do not necessarily, include the processor 702, the memory 704, the beam module 708, the transceiver 710, the modem 712, the RF unit 714, and/or the one or more antennas 716 with reference to FIG. 7.
  • the BS 700 receives, based on a second beam direction different from the first beam direction before the beam application time, a first UL communication including one or more repetitions of a first UL communication signal less than a number of repetitions associated with a UL grant for the first UL communication.
  • the means for performing the operations of block 1404 can, but do not necessarily, include the processor 702, the memory 704, the beam module 708, the transceiver 710, the modem 712, the RF unit 714, and/or the one or more antennas 716 with reference to FIG. 7.
  • the BS 700 refrains from receiving at least a second repetition of the UL communication signal associated with the UL grant after the beam application time.
  • the means for performing the operations of block 1406 can, but do not necessarily, include the processor 702, the memory 704, the beam module 708, the transceiver 710, the modem 712, the RF unit 714, and/or the one or more antennas 716 with reference to FIG. 7.
  • the BS 700 receives, based on the first beam direction and the beam application time, a second UL communication.
  • the means for performing the operations of block 1408 can, but do not necessarily, include the processor 702, the memory 704, the beam module 708, the transceiver 710, the modem 712, the RF unit 714, and/or the one or more antennas 716 with reference to FIG. 7.
  • a method of wireless communication performed by a user equipment includes: receiving, from a base station (BS) , an indication of a first beam direction associated with a beam application time; and communicating a first communication including one or more repetitions of a communication signal, where communicating the first communication includes: communicating, based on a second beam direction different from the first beam direction before the beam application time, at least a first repetition of the one or more repetitions of the communication signal; and communicating, based on the first beam direction and the beam application time, at least a second repetition of the one or more repetitions of the communication signal.
  • a method of wireless communication performed by a user equipment includes: receiving, from a base station (BS) , an indication of a first beam direction associated with a beam application time; communicating, based on a second beam direction different from the first beam direction, a first communication including one or more repetitions of a first communication signal, where at least a first repetition of the one or more repetitions is communicated before the beam application time and at least a second repetition of the one or more repetitions is communicated after the beam application time; and communicating, based on the first beam direction, a second communication after communicating the first communication.
  • BS base station
  • a method of wireless communication performed by a user equipment includes: receiving, from a base station (BS) , an indication of a first beam direction associated with a beam application time; communicating, based on a second beam direction different from the first beam direction before the beam application time, a first communication including one or more repetitions of a first communication signal less than a number of repetitions associated with a grant for the first communication; refraining from communicating at least a second repetition of the one or more repetitions of the first communication signal; and communicating, based on the first beam direction and on the beam application time, a second communication after communicating the first communication.
  • BS base station
  • a user equipment includes a transceiver configured to: receive, from a base station (BS) , an indication of a first beam direction associated with a beam application time; and communicate a first communication including one or more repetitions of a communication signal, where the transceiver is configured to: communicate, based on a second beam direction different from the first beam direction before the beam application time, at least a first repetition of the one or more repetitions of the communication signal; and communicate, based on the first beam direction and the beam application time, at least a second repetition of the one or more repetitions of the communication signal.
  • BS base station
  • the transceiver is configured to: communicate, based on a second beam direction different from the first beam direction before the beam application time, at least a first repetition of the one or more repetitions of the communication signal; and communicate, based on the first beam direction and the beam application time, at least a second repetition of the one or more repetitions of the communication signal.
  • a user equipment includes a transceiver configured to: receive, from a base station (BS) , an indication of a first beam direction associated with a beam application time; communicate, based on a second beam direction different from the first beam direction, a first communication including one or more repetitions of a first communication signal, where at least a first repetition of the one or more repetitions is communicated before the beam application time and at least a second repetition of the one or more repetitions is communicated after the beam application time; and communicate, based on the first beam direction, a second communication after communicating the first communication.
  • BS base station
  • a user equipment includes a transceiver, a memory, and a processor coupled with the memory.
  • the transceiver is configured to: receive, from a base station (BS) , an indication of a first beam direction associated with a beam application time; communicate, based on a second beam direction different from the first beam direction before the beam application time, a first communication including one or more repetitions of a first communication signal less than a number of repetitions associated with a grant for the first communication; and communicate, based on the first beam direction and on the beam application time, a second communication after communicating the first communication.
  • the processor is configured to, when executing instructions stored on the memory, cause the UE to refrain from communicating at least a second repetition of the one or more repetitions of the first communication signal.
  • an apparatus includes: means for receiving, from a base station (BS) , an indication of a first beam direction associated with a beam application time; and means for communicating a first communication including one or more repetitions of a communication signal, where the means for communicating the first communication includes: means for communicating, based on a second beam direction different from the first beam direction before the beam application time, at least a first repetition of the one or more repetitions of the communication signal; and means for communicating, based on the first beam direction and the beam application time, at least a second repetition of the one or more repetitions of the communication signal.
  • BS base station
  • an apparatus includes: means for receiving, from a base station (BS) , an indication of a first beam direction associated with a beam application time; means for communicating, based on a second beam direction different from the first beam direction, a first communication including one or more repetitions of a first communication signal, where at least a first repetition of the one or more repetitions is communicated before the beam application time and at least a second repetition of the one or more repetitions is communicated after the beam application time; and means for communicating, based on the first beam direction, a second communication after communicating the first communication.
  • BS base station
  • an apparatus includes: means for receiving, from a base station (BS) , an indication of a first beam direction associated with a beam application time; means for communicating, based on a second beam direction different from the first beam direction before the beam application time, a first communication including one or more repetitions of a first communication signal less than a number of repetitions associated with a grant for the first communication; means for refraining from communicating at least a second repetition of the one or more repetitions of the first communication signal; and means for communicating, based on the first beam direction and on the beam application time, a second communication after communicating the first communication.
  • BS base station
  • a method of wireless communication performed by a base station includes: transmitting, to a user equipment (UE) , an indication of a first beam direction associated with a beam application time; and receiving an uplink (UL) communication including one or more repetitions of a UL communication signal, where receiving the UL communication includes: receiving, based on a second beam direction different from the first beam direction before the beam application time, at least a first repetition of the one or more repetitions of the UL communication signal; and receiving, based on the first beam direction and on the beam application time, at least a second repetition of the one or more repetitions of the UL communication signal.
  • BS base station
  • UE user equipment
  • UL uplink
  • a method of wireless communication performed by a base station includes: transmitting, to a user equipment (UE) , an indication of a first beam direction associated with a beam application time; receiving, based on a second beam direction different from the first beam direction, a first uplink (UL) communication including one or more repetitions of a first UL communication signal, where at least a first repetition of the one or more repetitions is received before the beam application time and at least a second repetition of the one or more repetitions is received after the beam application time; and receiving, based on the first beam direction, a second UL communication after receiving the first UL communication.
  • UL uplink
  • a method of wireless communication performed by a base station includes: transmitting, to a user equipment (UE) , an indication of a first beam direction associated with a beam application time; receiving, based on a second beam direction different from the first beam direction before the beam application time, a first uplink (UL) communication including one or more repetitions of a first UL communication signal less than a number of repetitions associated with a UL grant for the first UL communication; refraining from receiving at least a second repetition of the UL communication signal associated with the UL grant after the beam application time; and receiving, based on the first beam direction and the beam application time, a second UL communication.
  • UL uplink
  • a base station includes a transceiver configured to: transmit, to a user equipment (UE) , an indication of a first beam direction associated with a beam application time; and receive an uplink (UL) communication including one or more repetitions of a UL communication signal, where the transceiver is configured to: receive, based on a second beam direction different from the first beam direction before the beam application time, at least a first repetition of the one or more repetitions of the UL communication signal; and receive, based on the first beam direction and on the beam application time, at least a second repetition of the one or more repetitions of the UL communication signal.
  • UE user equipment
  • UL uplink
  • a base station includes a transceiver configured to: transmit, to a user equipment (UE) , an indication of a first beam direction associated with a beam application time; receive, based on a second beam direction different from the first beam direction, a first uplink (UL) communication including one or more repetitions of a first UL communication signal, where at least a first repetition of the one or more repetitions is received before the beam application time and at least a second repetition of the one or more repetitions is received after the beam application time; and receive, based on the first beam direction, a second UL communication after receiving the first UL communication.
  • UE user equipment
  • UL uplink
  • a base station includes a transceiver, a memory, and a processor coupled with the memory.
  • the transceiver is configured to: transmit, to a user equipment (UE) , an indication of a first beam direction associated with a beam application time; receive, based on a second beam direction different from the first beam direction before the beam application time, a first uplink (UL) communication including one or more repetitions of a first UL communication signal less than a number of repetitions associated with a UL grant for the first UL communication; and receive, in the first beam direction based on the beam application time, a second UL communication.
  • the processor is configured to, when executing instructions stored on the memory, cause the BS to refrain from receiving at least a second repetition of the UL communication signal associated with the UL grant after the beam application time.
  • an apparatus including: means for transmitting, to a user equipment (UE) , an indication of a first beam direction associated with a beam application time; means for receiving an uplink (UL) communication including one or more repetitions of a UL communication signal, where the means for receiving the UL communication includes: means for receiving, based on a second beam direction different from the first beam direction before the beam application time, at least a first repetition of the one or more repetitions of the UL communication signal; and means for receiving, based on the first beam direction and on the beam application time, at least a second repetition of the one or more repetitions of the UL communication signal.
  • UE user equipment
  • UL uplink
  • an apparatus including: means for transmitting, to a user equipment (UE) , an indication of a first beam direction associated with a beam application time; means for receiving, based on a second beam direction different from the first beam direction, a first uplink (UL) communication including one or more repetitions of a first UL communication signal, where at least a first repetition of the one or more repetitions is received before the beam application time and at least a second repetition of the one or more repetitions is received after the beam application time; and means for receiving, based on the first beam direction, a second UL communication after receiving the first UL communication.
  • UE user equipment
  • UL uplink
  • an apparatus including: means for transmitting, to a user equipment (UE) , an indication of a first beam direction associated with a beam application time; means for receiving, based on a second beam direction different from the first beam direction before the beam application time, a first uplink (UL) communication including one or more repetitions of a first UL communication signal less than a number of repetitions associated with a UL grant for the first UL communication; means for refraining from receiving at least a second repetition of the UL communication signal associated with the UL grant after the beam application time; and means for receiving, in the first beam direction based on the beam application time, a second UL communication.
  • UE user equipment
  • Information and signals may be represented using any of a variety of different technologies and techniques. For instance, data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
  • a general-purpose processor may be a microprocessor, but in the alternative, the processor may be any conventional processor, controller, microcontroller, or state machine.
  • a processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration) .
  • the functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other aspects and implementations are within the scope of the disclosure and appended claims. For instance, due to the nature of software, functions described above can be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Features implementing functions may also be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations.
  • “or” as used in a list of items indicates an inclusive list such that, for instance, a list of [at least one of A, B, or C] means A or B or C or AB or AC or BC or ABC (i.e., A and B and C) .

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Abstract

L'invention concerne des systèmes et des procédés de communications sans fil se rapportant à la commutation d'une direction de faisceau vers une autre direction de faisceau. Un équipement utilisateur (UE) peut recevoir, en provenance d'une station de base (BS), une indication d'une première direction de faisceau associée à un instant d'application de faisceau et peut communiquer une première communication comprenant une ou plusieurs répétitions d'un signal de communication. L'UE peut communiquer, sur la base d'une seconde direction de faisceau différente de la première direction de faisceau avant l'instant d'application de faisceau, au moins une première répétition parmi la ou les répétitions du signal de communication et peut communiquer, sur la base de la première direction de faisceau et de l'instant d'application de faisceau, au moins une seconde répétition parmi la ou les répétitions du signal de communication. D'autres aspects et caractéristiques sont également décrits.
PCT/CN2021/078147 2021-02-26 2021-02-26 Indication d'une direction de faisceau associée à un instant d'application de faisceau WO2022178829A1 (fr)

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