WO2022040824A1 - Demande de rapport d'informations d'état de canal apériodiques par un équipement utilisateur - Google Patents

Demande de rapport d'informations d'état de canal apériodiques par un équipement utilisateur Download PDF

Info

Publication number
WO2022040824A1
WO2022040824A1 PCT/CN2020/110655 CN2020110655W WO2022040824A1 WO 2022040824 A1 WO2022040824 A1 WO 2022040824A1 CN 2020110655 W CN2020110655 W CN 2020110655W WO 2022040824 A1 WO2022040824 A1 WO 2022040824A1
Authority
WO
WIPO (PCT)
Prior art keywords
csi
base station
csi reporting
indicating
configuration messages
Prior art date
Application number
PCT/CN2020/110655
Other languages
English (en)
Inventor
Fang Yuan
Wooseok Nam
Tao Luo
Original Assignee
Qualcomm Incorporated
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qualcomm Incorporated filed Critical Qualcomm Incorporated
Priority to PCT/CN2020/110655 priority Critical patent/WO2022040824A1/fr
Publication of WO2022040824A1 publication Critical patent/WO2022040824A1/fr

Links

Images

Classifications

    • 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
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/20—Control channels or signalling for resource management
    • H04W72/23—Control channels or signalling for resource management in the downlink direction of a wireless link, i.e. towards a terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W74/00—Wireless channel access
    • H04W74/002—Transmission of channel access control information
    • H04W74/004—Transmission of channel access control information in the uplink, i.e. towards network

Definitions

  • aspects of the present disclosure relate generally to wireless communication systems, and more particularly, to wireless communication systems that use aperiodic channel state information (A-CSI) reporting.
  • A-CSI aperiodic channel state information
  • Wireless communication networks are widely deployed to provide various communication services such as voice, video, packet data, messaging, broadcast, and the like. These wireless networks may be multiple-access networks capable of supporting multiple users by sharing the available network resources. Such networks, which are usually multiple access networks, support communications for multiple users by sharing the available network resources.
  • a wireless communication network may include a number of base stations or node Bs that can support communication for a number of user equipments (UEs) .
  • a UE may communicate with a base station via downlink and uplink.
  • the downlink (or forward link) refers to the communication link from the base station to the UE
  • the uplink (or reverse link) refers to the communication link from the UE to the base station.
  • a base station may transmit data and control information on the downlink to a UE and/or may receive data and control information on the uplink from the UE.
  • a transmission from the base station may encounter interference due to transmissions from neighbor base stations or from other wireless radio frequency (RF) transmitters.
  • RF radio frequency
  • a transmission from the UE may encounter interference from uplink transmissions of other UEs communicating with the neighbor base stations or from other wireless RF transmitters. This interference may degrade performance on both the downlink and uplink.
  • a method of wireless communication includes receiving, by a user equipment (UE) , one or more configuration messages indicating a plurality of aperiodic channel state information (A-CSI) reporting triggers.
  • the method further includes transmitting, by the UE to a base station, a CSI request indicating a particular A-CSI reporting trigger selected by the UE from among the plurality of A-CSI reporting triggers.
  • A-CSI aperiodic channel state information
  • a non-transitory computer-readable medium stores instructions executable by a processor to perform operations.
  • the operations include receiving, by a UE, one or more configuration messages indicating a plurality of A-CSI reporting triggers.
  • the operations further include transmitting, by the UE to a base station, a CSI request indicating a particular A-CSI reporting trigger selected by the UE from among the plurality of A-CSI reporting triggers.
  • an apparatus in another aspect, includes a memory and one or more processors coupled to the memory.
  • the one or more processors are configured to receive, at a UE, one or more configuration messages indicating a plurality of A-CSI reporting triggers and to transmit, from the UE to a base station, a CSI request indicating a particular A-CSI reporting trigger selected by the UE from among the plurality of A-CSI reporting triggers.
  • an apparatus in another aspect, includes means for receiving, at a UE, one or more configuration messages indicating a plurality of A-CSI reporting triggers.
  • the apparatus further includes means for transmitting, from the UE to a base station, a CSI request indicating a particular A-CSI reporting trigger selected by the UE from among the plurality of A-CSI reporting triggers.
  • a method of wireless communication includes transmitting, by a base station to a UE, one or more configuration messages indicating a plurality of A-CSI reporting triggers. The method further includes receiving, by the base station from the UE, a CSI request indicating a particular A-CSI reporting trigger from among the plurality of A-CSI reporting triggers.
  • a non-transitory computer-readable medium stores instructions executable by a processor to perform operations.
  • the operations include transmitting, by a base station to a UE, one or more configuration messages indicating a plurality of A-CSI reporting triggers.
  • the operations further include receiving, by the base station from the UE, a CSI request indicating a particular A-CSI reporting trigger from among the plurality of A-CSI reporting triggers.
  • an apparatus in another aspect, includes a memory and one or more processors coupled to the memory.
  • the one or more processors are configured to transmit, from a base station to a UE, one or more configuration messages indicating a plurality of A-CSI reporting triggers.
  • the one or more processors are further configured to receive, at the base station from the UE, a CSI request indicating a particular A-CSI reporting trigger from among the plurality of A-CSI reporting triggers.
  • an apparatus in another aspect, includes means for transmitting, from a base station to a UE, one or more configuration messages indicating a plurality of A-CSI reporting triggers.
  • the apparatus further includes means for receiving, at the base station from the UE, a CSI request indicating a particular A-CSI reporting trigger from among the plurality of A-CSI reporting triggers.
  • FIG. 1 is a block diagram illustrating an example of a wireless communication system according to some aspects of the disclosure.
  • FIG. 2 is a block diagram illustrating examples of a base station and a UE according to some aspects of the disclosure.
  • FIG. 3 is a block diagram illustrating another example of a wireless communication system according to some aspects of the disclosure.
  • FIG. 4 is a diagram illustrating additional examples according to some aspects of the disclosure.
  • FIG. 5 is a flow diagram of a method of wireless communication that may be performed by a UE according to some aspects of the disclosure.
  • FIG. 6 is a flow diagram of a method of wireless communication that may be performed by a base station according to some aspects of the disclosure.
  • FIG. 7 is a block diagram conceptually illustrating an example of a UE according to some aspects of the disclosure.
  • FIG. 8 is a block diagram of an example of a base station according to some aspects of the disclosure.
  • Wireless communication systems may use channel state information (CSI) reporting to detect and reporting changes in wireless communication channels.
  • a base station may configured a user equipment (UE) with certain parameters, and the UE may perform measurements based on the parameters to generate a CSI report.
  • the parameters may indicate resources (such as time slots and frequencies) , and the UE may perform the measurements based on the resources.
  • the UE may transmit the CSI report to the base station to enable the base station to perform certain operations.
  • the base station may adjust a power level to compensate for noise or interference.
  • a CSI reporting process may be slow to react to rapidly changing conditions in a wireless communication network.
  • data and other signals may be corrupted or lost, which may result in, for example, a dropped call or a radio link failure (RLF) before the CSI reporting process can enable the base station to adjust parameters to compensate for the change in conditions.
  • RLF radio link failure
  • a wireless communication system in accordance with some aspects of the disclosure enables a UE to send a CSI request to a base station indicating an aperiodic CSI (A-CSI) reporting trigger.
  • A-CSI aperiodic CSI
  • the UE may generate an A-CSI report more quickly as compared to some techniques that wait for a base station to trigger A-CSI reporting.
  • the UE may be better able to detect a channel condition than the base station, such as where the UE is physically closer than the base station to a source of noise or interference.
  • A-CSI reporting may occur with less delay (or “lag” ) and may account more quickly for changes in channel conditions as compared to some other A-CSI reporting techniques.
  • this disclosure relates generally to providing or participating in authorized shared access between two or more wireless devices in one or more 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, GSM networks, 5th Generation (5G) or new radio (NR) networks (sometimes referred to as “5G NR” networks/systems/devices) , 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 5th Generation
  • NR new radio
  • a CDMA network may implement a radio technology such as universal terrestrial radio access (UTRA) , cdma2000, and the like.
  • UTRA includes wideband-CDMA (W-CDMA) and low chip rate (LCR) .
  • CDMA2000 covers IS-2000, IS-95, and IS-856 standards.
  • a TDMA network may, for example implement a radio technology such as Global System for Mobile Communication (GSM) .
  • GSM Global System for Mobile Communication
  • 3GPP defines standards for the GSM EDGE (enhanced data rates for GSM evolution) radio access network (RAN) , also denoted as GERAN.
  • GERAN is the radio component of GSM/EDGE, together with the network that joins the base stations (for example, the Ater and Abis interfaces) and the base station controllers (A interfaces, etc. ) .
  • the radio access network represents a component of a GSM network, through which phone calls and packet data are routed from and to the public switched telephone network (PSTN) and Internet to and from subscriber handsets, also known as user terminals or user equipments (UEs) .
  • PSTN public switched telephone network
  • UEs subscriber handsets
  • a mobile phone operator's network may comprise one or more GERANs, which may be coupled with Universal Terrestrial Radio Access Networks (UTRANs) in the case of a UMTS/GSM network. Additionally, an operator network may also include one or more LTE networks, and/or one or more other networks. The various different network types may use different radio access technologies (RATs) and radio access networks (RANs) .
  • RATs radio access technologies
  • RANs radio access networks
  • An OFDMA network may implement a radio technology such as evolved UTRA (E-UTRA) , IEEE 802.11, IEEE 802.16, IEEE 802.20, flash-OFDM and the like.
  • E-UTRA evolved UTRA
  • 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) .
  • the 3GPP is a collaboration between groups of telecommunications associations that aims to define a globally applicable third generation (3G) mobile phone specification.
  • 3GPP long term evolution (LTE) is a 3GPP project which was aimed at improving the universal mobile telecommunications system (UMTS) mobile phone standard.
  • the 3GPP may define specifications for the next generation of mobile networks, mobile systems, and mobile devices.
  • LTE long term evolution
  • UMTS universal mobile telecommunications system
  • the present disclosure may describe certain aspects with reference to LTE, 4G, or 5G NR technologies; however, the description is not intended to be limited to a specific technology or application, and one or more aspects descried with reference to one technology may be understood to be applicable to another technology. Indeed, one or more aspects of the present disclosure are related to shared access to wireless spectrum between networks using 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. To achieve these goals, further enhancements to 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 an 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 millisecond (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
  • 5G NR devices, networks, and systems may be implemented to use optimized OFDM-based waveform features. These features may include scalable numerology and transmission time intervals (TTIs) ; 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 advanced wireless technologies, such as massive multiple input, multiple output (MIMO) , robust millimeter wave (mmWave) transmissions, advanced channel coding, and device-centric mobility.
  • TTIs transmission time intervals
  • TDD dynamic, low-latency time division duplex
  • FDD frequency division duplex
  • advanced wireless technologies such as massive multiple input, multiple output (MIMO) , robust millimeter wave (mmWave) transmissions, advanced channel coding, and device-centric mobility.
  • 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 example over 1, 5, 10, 20 MHz, and the like bandwidth.
  • subcarrier spacing may occur with 30 kHz over 80/100 MHz bandwidth.
  • the subcarrier spacing may occur with 60 kHz over a 160 MHz bandwidth.
  • subcarrier spacing may occur with 120 kHz over a 500MHz bandwidth.
  • the scalable numerology of 5G NR facilitates scalable TTI for diverse latency and quality of service (QoS) requirements. For example, 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/downlink scheduling information, data, and acknowledgement in the same subframe.
  • the self-contained integrated subframe supports communications in unlicensed or contention-based shared spectrum, adaptive uplink/downlink that may be flexibly configured on a per-cell basis to dynamically switch between uplink and downlink to meet the current traffic needs.
  • wireless communication networks adapted according to the concepts herein may operate with any combination of licensed or unlicensed spectrum depending on loading and availability. Accordingly, it will be apparent to a person having ordinary skill in the art that the systems, apparatus and methods described herein may be applied to other communications systems and applications than the particular examples provided.
  • Implementations may range from chip-level or modular components to non-modular, non-chip-level implementations and further to aggregated, distributed, or OEM devices or systems incorporating one or more described aspects. It is intended that innovations described herein may be practiced in a wide variety of implementations, including both large/small devices, chip-level components, multi-component systems (e.g. RF-chain, communication interface, processor) , distributed arrangements, end-user devices, etc. of varying sizes, shapes, and constitution.
  • multi-component systems e.g. RF-chain, communication interface, processor
  • FIG. 1 is a block diagram illustrating details of an example wireless communication system.
  • the wireless communication system may include wireless network 100.
  • Wireless network 100 may, for example, include a 5G wireless network.
  • components appearing in FIG. 1 are likely to have related counterparts in other network arrangements including, for example, cellular-style network arrangements and non-cellular-style-network arrangements (e.g., device to device or peer to peer or ad hoc network arrangements, etc. ) .
  • Wireless network 100 illustrated in FIG. 1 includes a number of base stations 105 and other network entities.
  • a base station may be a station that communicates with the UEs 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 base station 105 may provide communication coverage for a particular geographic area.
  • the term “cell” can refer to this particular geographic coverage area of a base station and/or a base station subsystem serving the coverage area, depending on the context in which the term is used.
  • base stations 105 may be associated with a same operator or different operators (e.g., wireless network 100 may include a plurality of operator wireless networks) .
  • base station 105 may provide wireless communications using one or more of the same frequencies (e.g., one or more frequency bands in licensed spectrum, unlicensed spectrum, or a combination thereof) as a neighboring cell.
  • an individual base station 105 or UE 115 may be operated by more than one network operating entity.
  • each base station 105 and UE 115 may be operated by a single network operating entity.
  • a base station 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 base station for a macro cell may be referred to as a macro base station.
  • a base station for a small cell may be referred to as a small cell base station, a pico base station, a femto base station or a home base station. In the example shown in FIG.
  • base stations 105d and 105e are regular macro base stations, while base stations 105a-105c are macro base stations enabled with one of 3 dimension (3D) , full dimension (FD) , or massive MIMO. Base stations 105a-105c take advantage of their higher dimension MIMO capabilities to exploit 3D beamforming in both elevation and azimuth beamforming to increase coverage and capacity.
  • Base station 105f is a small cell base station which may be a home node or portable access point.
  • a base station may support one or multiple (e.g., two, three, four, and the like) cells.
  • Wireless network 100 may support synchronous or asynchronous operation.
  • the base stations may have similar frame timing, and transmissions from different base stations may be approximately aligned in time.
  • the base stations may have different frame timing, and transmissions from different base stations may not be aligned in time.
  • networks may be enabled or configured to handle dynamic switching between synchronous or asynchronous operations.
  • UEs 115 are dispersed throughout the wireless network 100, and each UE may be stationary or mobile.
  • a mobile apparatus is commonly referred to as user equipment (UE) in standards and specifications promulgated by the 3GPP, such apparatus may additionally or otherwise be referred to by those skilled in the art as a mobile station (MS) , a subscriber station, a mobile unit, a subscriber unit, a wireless unit, a remote unit, a mobile device, a wireless device, a wireless communications device, a remote device, a mobile subscriber station, an access terminal (AT) , a mobile terminal, a wireless terminal, a remote terminal, a handset, a terminal, a user agent, a mobile client, a client, a gaming device, an augmented reality device, vehicular component device/module, or some other suitable terminology.
  • a “mobile” apparatus or UE need not necessarily have a capability to move, and may be stationary.
  • Some non-limiting examples of a mobile apparatus such as may include implementations of one or more of UEs 115, include a mobile, a cellular (cell) phone, a smart phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a laptop, a personal computer (PC) , a notebook, a netbook, a smart book, a tablet, and a personal digital assistant (PDA) .
  • a mobile such as may include implementations of one or more of UEs 115, include a mobile, a cellular (cell) phone, a smart phone, a session initiation protocol (SIP) phone, a wireless local loop (WLL) station, a laptop, a personal computer (PC) , a notebook, a netbook, a smart book, a tablet, and a personal digital assistant (PDA) .
  • PDA personal digital assistant
  • a mobile apparatus may additionally be an “Internet of things” (IoT) or “Internet of everything” (IoE) device such as an automotive or other transportation vehicle, a satellite radio, a global positioning system (GPS) device, a logistics controller, a drone, a multi-copter, a quad-copter, a smart energy or security device, a solar panel or solar array, municipal lighting, water, or other infrastructure; industrial automation and enterprise devices; consumer and wearable devices, such as eyewear, a wearable camera, a smart watch, a health or fitness tracker, a mammal implantable device, gesture tracking device, medical device, a digital audio player (e.g., MP3 player) , a camera, a game console, etc.; and digital home or smart home devices such as a home audio, video, and multimedia device, an appliance, a sensor, a vending machine, intelligent lighting, a home security system, a smart meter, etc.
  • IoT Internet of things
  • IoE Internet of everything
  • a UE may be a device that includes a Universal Integrated Circuit Card (UICC) .
  • a UE may be a device that does not include a UICC.
  • UEs that do not include UICCs may also be referred to as IoE devices.
  • UEs 115a-115d of the implementation illustrated in FIG. 1 are examples of mobile smart phone-type devices accessing wireless network 100
  • a UE 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
  • UEs 115e-115k illustrated in FIG. 1 are examples of various machines configured for communication that access wireless network 100.
  • a mobile apparatus such as UEs 115, may be able to communicate with any type of the base stations, whether macro base stations, pico base stations, femto base stations, relays, and the like.
  • a communication link (represented as a lightning bolt) indicates wireless transmissions between a UE and a serving base station, which is a base station designated to serve the UE on the downlink and/or uplink, or desired transmission between base stations, and backhaul transmissions between base stations.
  • UEs may operate as base stations or other network nodes in some scenarios.
  • Backhaul communication between base stations of wireless network 100 may occur using wired and/or wireless communication links.
  • base stations 105a-105c serve UEs 115a and 115b using 3D beamforming and coordinated spatial techniques, such as coordinated multipoint (CoMP) or multi-connectivity.
  • Macro base station 105d performs backhaul communications with base stations 105a-105c, as well as small cell, base station 105f.
  • Macro base station 105d also transmits multicast services which are subscribed to and received by 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.
  • Wireless network 100 of implementations supports mission critical communications with ultra-reliable and redundant links for mission critical devices, such UE 115e, which is a drone. Redundant communication links with UE 115e include from macro base stations 105d and 105e, as well as small cell base station 105f.
  • UE 115f thermometer
  • UE 115g smart meter
  • UE 115h wearable device
  • Wireless network 100 may also provide additional network efficiency through dynamic, low-latency TDD/FDD communications, such as in a vehicle-to-vehicle (V2V) mesh network between UEs 115i-115k communicating with macro base station 105e.
  • V2V vehicle-to-vehicle
  • FIG. 2 shows a block diagram conceptually illustrating an example design of a base station 105 and a UE 115, which may be any of the base stations and one of the UEs in FIG. 1.
  • base station 105 may be small cell base station 105f in FIG. 1
  • UE 115 may be UE 115c or 115d operating in a service area of base station 105f, which in order to access small cell base station 105f, would be included in a list of accessible UEs for small cell base station 105f.
  • Base station 105 may also be a base station of some other type. As shown in FIG. 2, base station 105 may be equipped with antennas 234a through 234t, and UE 115 may be equipped with antennas 252a through 252r for facilitating wireless communications.
  • transmit processor 220 may receive data from data source 212 and control information from processor 240.
  • the control information may be for the physical broadcast channel (PBCH) , physical control format indicator channel (PCFICH) , physical hybrid-ARQ (automatic repeat request) indicator channel (PHICH) , physical downlink control channel (PDCCH) , enhanced physical downlink control channel (EPDCCH) , MTC physical downlink control channel (MPDCCH) , etc.
  • the data may be for the PDSCH, etc.
  • transmit processor 220 may process (e.g., encode and symbol map) the data and control information to obtain data symbols and control symbols, respectively.
  • Transmit processor 220 may also generate reference symbols, e.g., for the primary synchronization signal (PSS) and secondary synchronization signal (SSS) , and cell-specific reference signal.
  • Transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on the data symbols, the control symbols, and/or the reference symbols, if applicable, and may provide output symbol streams to modulators (MODs) 232a through 232t.
  • MIMO multiple-input multiple-output
  • MIMO multiple-input multiple-output
  • MIMO multiple-input multiple-output
  • MIMO multiple-input multiple-output
  • Each modulator 232 may process a respective output symbol stream (e.g., for OFDM, etc. ) to obtain an output sample stream.
  • Each modulator 232 may additionally or alternatively process (e.g., convert to analog, amplify, filter, and upconvert) the output sample stream to obtain a downlink signal.
  • Downlink signals from modulators 232a through 232t may be transmitted via antennas 234a through 234t, respectively.
  • the antennas 252a through 252r may receive the downlink signals from base station 105 and may provide received signals to demodulators (DEMODs) 254a through 254r, respectively.
  • Each demodulator 254 may condition (e.g., filter, amplify, downconvert, and digitize) a respective received signal to obtain input samples.
  • Each demodulator 254 may further process the input samples (e.g., for OFDM, etc. ) to obtain received symbols.
  • MIMO detector 256 may obtain received symbols from demodulators 254a through 254r, perform MIMO detection on the received symbols if applicable, and provide detected symbols.
  • Receive processor 258 may process (e.g., demodulate, deinterleave, and decode) the detected symbols, provide decoded data for UE 115 to data sink 260, and provide decoded control information to processor 280.
  • transmit processor 264 may receive and process data (e.g., for the physical uplink shared channel (PUSCH) ) from data source 262 and control information (e.g., for the physical uplink control channel (PUCCH) ) from processor 280. Additionally, transmit processor 264 may also generate reference symbols for a reference signal. The symbols from transmit processor 264 may be precoded by TX MIMO processor 266 if applicable, further processed by modulators 254a through 254r (e.g., for SC-FDM, etc. ) , and transmitted to base station 105.
  • data e.g., for the physical uplink shared channel (PUSCH)
  • control information e.g., for the physical uplink control channel (PUCCH)
  • transmit processor 264 may also generate reference symbols for a reference signal.
  • the symbols from transmit processor 264 may be precoded by TX MIMO processor 266 if applicable, further processed by modulators 254a through 254r (e.g., for SC-FDM, etc. )
  • the uplink signals from UE 115 may be received by antennas 234, processed by demodulators 232, detected by MIMO detector 236 if applicable, and further processed by receive processor 238 to obtain decoded data and control information sent by UE 115.
  • Processor 238 may provide the decoded data to data sink 239 and the decoded control information to processor 240.
  • Processors 240 and 280 may direct the operation at base station 105 and UE 115, respectively.
  • Processor 240 and/or other processors and modules at base station 105 and/or processor 280 and/or other processors and modules at UE 115 may perform or direct the execution of various processes for the techniques described herein, such as to perform or direct the execution illustrated in FIGS. 5 and 6, and/or other processes for the techniques described herein.
  • Memories 242 and 282 may store data and program codes for base station 105 and UE 115, respectively.
  • Scheduler 244 may schedule UEs for data transmission on the downlink and/or uplink.
  • Wireless communications systems operated by different network operating entities may share spectrum.
  • a network operating entity may be configured to use an entirety of a designated shared spectrum for at least a period of time before another network operating entity uses the entirety of the designated shared spectrum for a different period of time.
  • certain resources e.g., time
  • a network operating entity may be allocated certain time resources reserved for exclusive communication by the network operating entity using the entirety of the shared spectrum.
  • the network operating entity may also be allocated other time resources where the entity is given priority over other network operating entities to communicate using the shared spectrum.
  • These time resources, prioritized for use by the network operating entity may be utilized by other network operating entities on an opportunistic basis if the prioritized network operating entity does not utilize the resources. Additional time resources may be allocated for any network operator to use on an opportunistic basis.
  • Access to the shared spectrum and the arbitration of time resources among different network operating entities may be centrally controlled by a separate entity, autonomously determined by a predefined arbitration scheme, or dynamically determined based on interactions between wireless nodes of the network operators.
  • UE 115 and base station 105 may operate in a shared radio frequency spectrum band, which may include licensed or unlicensed (e.g., contention-based) frequency spectrum. In an unlicensed frequency portion of the shared radio frequency spectrum band, UEs 115 or base stations 105 may traditionally perform a medium-sensing procedure to contend for access to the frequency spectrum. For example, UE 115 or base station 105 may perform a listen-before-talk or listen-before-transmitting (LBT) procedure such as a clear channel assessment (CCA) prior to communicating in order to determine whether the shared channel is available.
  • LBT listen-before-talk or listen-before-transmitting
  • CCA clear channel assessment
  • a CCA may include an energy detection procedure to determine whether there are any other active transmissions.
  • a device may infer that a change in a received signal strength indicator (RSSI) of a power meter indicates that a channel is occupied.
  • RSSI received signal strength indicator
  • a CCA also may include detection of specific sequences that indicate use of the channel.
  • another device may transmit a specific preamble prior to transmitting a data sequence.
  • an LBT procedure may include a wireless node adjusting its own backoff window based on the amount of energy detected on a channel and/or the acknowledge/negative-acknowledge (ACK/NACK) feedback for its own transmitted packets as a proxy for collisions.
  • ACK/NACK acknowledge/negative-acknowledge
  • FIG. 3 is a block diagram of another example of a wireless communications system 300 according to some aspects of the disclosure.
  • the wireless communications system 300 may include one or more base stations, such as the base station 105.
  • the wireless communications system 300 may include one or more UEs, such as the UE 115.
  • a network device may transmit one or more configuration messages 330 to the UE 115.
  • the one or more configuration messages 330 indicate aperiodic channel state information (A-CSI) reporting triggers 320.
  • the one or more configuration messages 330 indicate CSI resources 332 for CSI reporting by the UE 115.
  • the one or more configuration messages 330 may indicate that the CSI resources 332 are periodically scheduled or are semi-persistently scheduled.
  • the UE 115 may receive the one or more configuration messages 330. In some cases, the UE 115 may initiate A-CSI reporting. For example, in some circumstances, the UE 115 may detect a condition (or a change in a condition) of a channel (e.g., a downlink channel) , which may be undetected by the base station 105 in some cases. For example, the UE 115 may monitor the CSI resources 332 to detect the condition (or change in condition) . In this case, the UE 115 may initiate A-CSI reporting, which may enable the UE 115 to measure and report the condition (or change of condition) to the base station 105. For example, the UE 115 may transmit a CSI request 340 to the base station 105. The CSI request 340 may indicate a request for A-CSI reporting by the UE 115.
  • a condition or a change in a condition
  • a channel e.g., a downlink channel
  • the UE 115 may monitor the CSI resources 3
  • the CSI request 340 may indicate an A-CSI reporting trigger 342.
  • the UE 115 selects the A-CSI reporting trigger 342 from the A-CSI reporting triggers 320 indicated by the one or more configuration messages 330.
  • the A-CSI reporting triggers 320 may include A-CSI reporting triggers 320a-b, and the A-CSI reporting trigger 342 may correspond to one of the A-CSI reporting triggers 320a-b selected by the UE 115.
  • different A-CSI reporting triggers of the A-CSI reporting triggers 320 may be configured with different parameters, such as different CSI report quantities.
  • the A-CSI reporting trigger 320a may be configured with a CSI report quantity of layer 1 reference signal received power (L1-RSRP)
  • the A-CSI reporting trigger 320b may be configured with a CSI report quantity of channel quality indicator (CQI)
  • the UE 115 may select the A-CSI reporting trigger 320a as the A-CSI reporting trigger 342 based on detecting a change in L1-RSRP and may select the A-CSI reporting trigger 320b as the A-CSI reporting trigger 342 based on detecting a change of CQI.
  • the UE 115 transmits the CSI request 340 via a physical random access channel (PRACH) 370.
  • PRACH physical random access channel
  • the UE 115 may transmit the CSI request 340 via the PRACH 370 based on a contention-based random access (CBRA) procedure or based on a contention-free random access (CFRA) procedure.
  • CBRA procedures may include a four-step CBRA procedure or a two-step CBRA procedure.
  • the UE 115 transmits the CSI request 340 via a physical uplink control channel (PUCCH) 380.
  • PUCCH physical uplink control channel
  • the UE 115 stores control data 310, and the UE 115 transmits the CSI request 340 based on the control data 310.
  • the UE 115 may receive the control data 310 from the base station 105, such as via the one or more configuration messages 330.
  • the control data 310 indicates a mapping of the A-CSI reporting triggers 320 to one or more parameters associated with the PRACH 370, to one or more parameters associated with the PUCCH 380, or a combination thereof.
  • the UE 115 may determine one or more transmit parameters associated with the CSI request 340 based on the A-CSI reporting trigger 342 (e.g., by performing a lookup operation to the control data 310 based on the A-CSI reporting trigger 342) .
  • the control data 310 may indicate a mapping of the A-CSI reporting triggers 320 to preambles 322 associated with the PRACH 370, to occasions 324 of the PRACH 370, or both.
  • the UE 115 may select, based on the A-CSI reporting trigger 342, one or both of a preamble 322a from the preambles 322 or an occasion 324a from the occasions 324.
  • UE 115 may transmit the CSI request 340 to the base station 105 by transmitting the preamble 322a via PRACH 370, by transmitting the CSI request 340 during the occasion 324a of the PRACH 370, or both.
  • one or more of the preamble 322a or the occasion 324a may indicate the A-CSI reporting trigger 342 to the base station 105.
  • control data 310 may indicate a mapping of the A-CSI reporting triggers 320 to uplink control information (UCI) codepoints 326 associated with the PUCCH 380, to occasions 328 of the PUCCH 380, or both.
  • the UE 115 may select, based on the A-CSI reporting trigger 342, one or both of a UCI codepoint 326a from the UCI codepoints 326 or an occasion 328a from the occasions 328.
  • UE 115 may transmit the CSI request 340 to the base station 105 by transmitting the UCI codepoint 326a via the PUCCH 380, by transmitting the CSI request 340 during the occasion 328a of the PUCCH 380, or both.
  • one or more of the UCI codepoint 326a or the occasion 328a may indicate the A-CSI reporting trigger 342 to the base station 105.
  • the PUCCH 380 may also carry one or more other UCI codepoints (such as acknowledgement or non-acknowledgement bits (ACK/NACK bits) ) , scheduling requests, other information, or a combination thereof.
  • ACK/NACK bits acknowledgement or non-acknowledgement bits
  • the base station 105 may receive the CSI request 340 from the UE 115 and may identify the A-CSI reporting trigger 342 based on the CSI request 340.
  • the base station 105 may determine the A-CSI reporting trigger 342 based on one or more transmit parameters associated with the CSI request 340, such by performing a reverse lookup operation to the control data 310.
  • the base station 105 determines the A-CSI reporting trigger 342 by performing the reverse lookup operation based on identifying that the CSI request 340 includes the preamble 322a or is transmitted during the occasion 324a.
  • the base station 105 determines the A-CSI reporting trigger 342 by performing the reverse lookup operation based on identifying that the CSI request 340 includes the UCI codepoint 326a or is transmitted during the occasion 328a.
  • the base station 105 may transmit, to the UE 115, a response 350 to the CSI request 340.
  • the response 350 may indicate scheduling information 352 for A-CSI reporting by the UE 115, such as one or more resources for transmission of one or more A-CSI reports by the UE 115.
  • no response 350 is transmitted by the base station 105 to the UE 115 based on the CSI request 340.
  • the UE 115 may perform one or more CSI measurements and may generate an A-CSI report 360 based on the one or more CSI measurements.
  • the A-CSI report may indicate a channel quality indicator (CQI) , a precoding matrix indicator (PMI) , a CSI reference signal (CSI-RS) resource indicator (CRI) , a strongest layer indicator (SLI) , a rank indicator (RI) , a reference signal receive power (RSRP) , one or more other parameters, or a combination thereof.
  • the UE 115 generates the A-CSI report 360 based at least in part on the CSI resources 332, such as by measuring the CSI resources 332 to generate measurement data that is included in the A-CSI report 360.
  • the UE 115 may non-periodically transmit A-CSI reports (such as the A-CSI report 360) to the base station 105, which differ from other CSI reporting techniques, such as periodic CSI reporting and semi-persistent CSI reporting.
  • A-CSI reports such as the A-CSI report 360
  • the UE 115 may be configured with multiple slot offsets, and the UE 115 may transmit the A-CSI report 360 at a time that is based on one of the multiple slot offsets.
  • the UE 115 may be configured with a reporting period (instead of multiple slot offsets) .
  • the A-CSI reporting triggers 320 may differ from another set of CSI reporting triggers associated with periodic CSI reporting and from an additional set of CSI reporting triggers associated with semi-persistent CSI reporting.
  • the UE 115 may transmit the A-CSI report 360 to the base station 105 based on the A-CSI reporting trigger 342 (e.g., in response to detecting occurrence of the A-CSI reporting trigger 342) .
  • the UE 115 may transmit a corresponding A-CSI reporting trigger of the A-CSI reporting triggers 320 that is configured with a CSI quantity for L1-RSRP.
  • the UE 115 may transmit a corresponding A-CSI reporting trigger of the A-CSI reporting triggers 320 that is configured with a CSI quantity for CQI.
  • the UE 115 transmits the A-CSI-report 360 to the base station 105 via a particular PUCCH (e.g., the PUCCH 380 or another PUCCH) .
  • the UE may transmit the A-CSI report 360 via the particular PUCCH based on radio resource control (RRC) signaling.
  • RRC radio resource control
  • the transmission time occasion of the particular PUCCH may be indicated by a time offset in RRC signaling.
  • the indicated time offset may correspond to a time interval between transmission of the CSI request 340 and transmission of the A-CSI report 360.
  • the UE 115 may transmit the A-CSI-report 360 to the base station 105 via the particular PUCCH after the time offset from the CSI request 340 is transmitted.
  • the UE 115 transmits the A-CSI-report 360 to the base station 105 via a physical uplink shared channel (PUSCH) 390.
  • PUSCH physical uplink shared channel
  • transmission of the A-CSI report 360 via the PUSCH 390 is scheduled by the scheduling information 352.
  • the UE transmits the A-CSI report 360 via the PUSCH 390 based on a configured grant (CG) scheduled by radio resource control (RRC) signaling.
  • the response 350 may include RRC signaling indicating the CG, and the UE 115 may transmit the A-CSI report 360 via the CG.
  • the scheduling information 352 is used to schedule transmission of the A-CSI report 360.
  • the scheduling information 352 may indicate a dedicated dynamic grant to the UE 115.
  • the scheduling information 352 may indicate a CSI request to the UE 115.
  • the UE 115 may transmit the A-CSI report 360 via the PUSCH based on the dedicated dynamic grant.
  • the response 350 includes downlink control information (DCI) indicating the dedicated dynamic grant.
  • DCI downlink control information
  • transmission of the A-CSI report 360 via the PUSCH 390 is scheduled using a four-step contention-based random access (CBRA) procedure.
  • the four-step CBRA procedure may include transmitting a random access (RA) preamble (e.g., any of the preambles 322, which may be referred to as “Msg 1” in this case and is associated with the CSI request 340) to the base station 105, receiving an RA response from the base station 105 (also referred to as “Msg 2” ) , performing a scheduled transmission to the base station 105 (also referred to as “Msg 3” ) , and receiving a contention resolution message from the base station 105 (also referred to as “Msg 4” ) .
  • the UE 115 transmits the A-CSI report 360 using the scheduled transmission message (Msg 3) specified by the four-step CBRA procedure.
  • transmission of the A-CSI report 360 via the PUSCH 390 is scheduled using a two-step CBRA procedure.
  • the two-step CBRA procedure may include transmitting a combined RA preamble (e.g., any of the preambles 322, referred to as the preamble of “Msg A, ” which is associated with the CSI request 340) and scheduled transmission message (referred to as the PUSCH of “Msg A, ” which contains the A-CSI report 360) to the base station 105 and receiving a combined RA response and contention resolution message (also referred to as “Msg B” ) from the base station 105.
  • the UE 115 transmits the A-CSI report 360 using the combined random access preamble and scheduled transmission message (Msg A) specified by the two-step CBRA procedure.
  • the base station 105 identifies that the A-CSI reporting trigger 342 is associated with the A-CSI report 360. For example, because the CSI request 340 indicates the A-CSI reporting trigger 342, the CSI request 340 may enable the base station 105 to associate the A-CSI report 360 with the A-CSI reporting trigger 342. The base station 105 may perform one or more operations based on the A-CSI reporting trigger 342 and the A-CSI report 360, such as by adjusting parameters (e.g., a transmit power level of the UE 115) to compensate for noise, interference, or other conditions in the wireless communication system 300.
  • parameters e.g., a transmit power level of the UE 115
  • FIG. 4 is a diagram illustrating additional examples according to some aspects of the disclosure.
  • FIG. 4 depicts examples of operations performed by the base station 105 and the UE 115, such as transmission of the CSI request 340, the response 350, and the A-CSI report 360.
  • the A-CSI report 360 may be transmitted based on an A-CSI reporting trigger, such as the A-CSI reporting trigger 342.
  • FIG. 4 illustrates that the UE 115 may be configured with a plurality of CSI requests (CSI requests 00, 01, 10, and 11) that each indicate a different CSI trigger of a plurality of CSI triggers associated with the plurality of CSI requests (CSI triggers 00, 01, 10, and 11) , which may correspond to the A-CSI reporting triggers 320.
  • the CSI request 340 may correspond to one of the plurality of CSI requests of FIG. 4
  • the A-CSI reporting trigger 342 may correspond to one of the plurality of CSI triggers of FIG. 4.
  • FIG. 4 depicts an example of a resource grid 406 that may be associated with the PUCCH 380.
  • the abscissa may indicate time resources, and the ordinate may indicate frequency.
  • Resources of the resource grid may be grouped as occasions 00, 01, 10, and 11, which may correspond to the occasions 328. Accordingly, the UE 115 may select a particular occasion associated with the resource grid 406, and transmission during the particular occasion via the PUCCH 380 may indicate one of the CSI requests 00, 01, 10, and 11, which each may be associated with a respective CSI trigger of the CSI triggers 00, 01, 10, 11, as shown at 404.
  • One or more aspects described with reference to FIGS. 1-4 may improve performance of A-CSI reporting in a wireless communication system 300. For example, by “proactively” sending the CSI request 340 to the base station 105 (e.g., prior to or without receiving a CSI reporting command from the base station 105) , the UE 115 may generate the A-CSI report 360 more quickly as compared to some techniques that wait for a base station to trigger A-CSI reporting. As a particular example, in some cases, a UE 115 may be better able to detect a channel condition, such as where the UE 115 is physically closer than the base station 105 to a source of noise or interference. As a result, by “proactively” sending the CSI request 340 to the base station 105, A-CSI reporting may occur with less delay (or “lag” ) and may account more quickly for changes in channel conditions as compared to some other A-CSI reporting techniques.
  • FIG. 5 is a flow diagram of a method 500 of wireless communication that may be performed by a UE according to some aspects of the disclosure. In some examples, the method 500 is performed by the UE 115.
  • the method 500 includes receiving, by a UE, one or more configuration messages indicating a plurality of A-CSI reporting triggers, at 502.
  • the UE 115 may receive the one or more configuration messages 330 indicating the A-CSI reporting triggers 320.
  • the method 500 further includes transmitting, by the UE to a base station, a CSI request indicating a particular A-CSI reporting trigger selected by the UE from among the plurality of A-CSI reporting triggers, at 504.
  • the UE 115 may select the A-CSI reporting trigger 342 from among the A-CSI reporting triggers 320 and may transmit the CSI request 340 to the base station 105 indicating the A-CSI reporting trigger 342.
  • the method 500 may further include receiving, by the UE from the base station, a response to the CSI request, at 506.
  • the UE 115 may receive the response 350 from the base station 105.
  • FIG. 6 is a flow diagram of a method 600 of wireless communication that may be performed by a base station according to some aspects of the disclosure. In some examples, the method 600 is performed by the base station 105.
  • the method 600 includes transmitting, by a base station to a UE, one or more configuration messages indicating a plurality of A-CSI reporting triggers, at 602.
  • the base station 105 may transmit the one or more configuration messages 330 to the UE 115.
  • the method 600 further includes receiving, by the base station from the UE, a CSI request indicating a particular A-CSI reporting trigger from among the plurality of A-CSI reporting triggers, at 604.
  • the base station 105 may receive, from the UE 115, the CSI request 340 indicating the A-CSI reporting trigger 342.
  • the method 600 may further include transmitting, by the base station to the UE, a response to the CSI request, at 606.
  • the base station 105 may transmit the response 350 to the UE 115.
  • FIG. 7 is a block diagram illustrating an example of a UE 115 according to some aspects of the disclosure.
  • the UE 115 may include structure, hardware, or components illustrated in FIG. 2.
  • the UE 115 may include the processor 280, which may execute instructions stored in the memory 282.
  • the UE 115 may transmit and receive signals via wireless radios 701a-r and antennas 252a-r.
  • the wireless radios 701a-r may include one or more components or devices described herein, such as the modulator/demodulators 254a-r, the MIMO detector 256, the receive processor 258, the transmit processor 264, the TX MIMO processor 266, one or more other components or devices, or a combination thereof.
  • the processor 280 executes A-CSI reporting trigger selection instructions 702 to select an A-CSI reporting trigger (e.g., the A-CSI reporting trigger 342) from among the A-CSI reporting triggers 320, which may be indicated by the control data 310. In some examples, the processor 280 executes A-CSI reporting instructions 704 to transmit the A-CSI report 360 based on detecting a selected A-CSI reporting trigger, such as the A-CSI reporting trigger 342.
  • A-CSI reporting trigger selection instructions 702 to select an A-CSI reporting trigger (e.g., the A-CSI reporting trigger 342) from among the A-CSI reporting triggers 320, which may be indicated by the control data 310.
  • the processor 280 executes A-CSI reporting instructions 704 to transmit the A-CSI report 360 based on detecting a selected A-CSI reporting trigger, such as the A-CSI reporting trigger 342.
  • FIG. 8 is a block diagram illustrating an example of a base station according to some aspects of the disclosure.
  • the base station 105 may include structure, hardware, and components illustrated in FIG. 2.
  • the base station 105 may include the processor 240, which may execute instructions stored in memory 242. Under control of the processor 240, the base station 105 may transmit and receive signals via wireless radios 801a-t and antennas 234a-t.
  • the wireless radios 801a-t may include one or more components or devices described herein, such as the modulator/demodulators 232a-t, the MIMO detector 236, the receive processor 238, the transmit processor 220, the TX MIMO processor 230, one or more other components or devices, or a combination thereof.
  • the processor 240 executes A-CSI reporting scheduling instructions 802 to schedule transmission of the A-CSI report 360 (e.g., according to the scheduling information 352) .
  • a method of wireless communication includes receiving, by a UE, one or more configuration messages indicating a plurality of A-CSI reporting triggers. The method further includes transmitting, by the UE to a base station, a CSI request indicating a particular A-CSI reporting trigger selected by the UE from among the plurality of A-CSI reporting triggers.
  • the UE transmits the CSI request to the base station via a physical uplink control channel (PUCCH) .
  • PUCCH physical uplink control channel
  • the UE transmits the CSI request to the base station via a physical random access channel (PRACH) .
  • PRACH physical random access channel
  • the UE transmits the CSI request via the PRACH based on a contention-based random access (CBRA) procedure.
  • CBRA contention-based random access
  • the UE transmits the CSI request via the PRACH based on a contention-free random access (CFRA) procedure.
  • CFRA contention-free random access
  • the UE transmits the CSI request via the PRACH based on a two-step contention-based random access (CBRA) procedure.
  • CBRA contention-based random access
  • the one or more configuration messages further indicate CSI resources for an A-CSI report associated with the particular A-CSI trigger.
  • the one or more configuration messages further indicate that the CSI resources are periodically scheduled.
  • the one or more configuration messages further indicate that the CSI resources are semi-persistently scheduled.
  • the UE transmits the CSI request to the base station by transmitting a preamble via a physical random access channel (PRACH) and during an occasion of the PRACH, and one or more of the preamble or the occasion indicates the particular A-CSI reporting trigger to the base station.
  • PRACH physical random access channel
  • the one or more configuration messages include control data indicating a mapping of the plurality A-CSI reporting triggers to one or both of a plurality of preambles associated with the PRACH or a plurality of occasions of the PRACH, and the method further includes selecting, based on the particular A-CSI reporting trigger, one or both of the preamble from the plurality of preambles or the occasion from the plurality of occasions.
  • the UE transmits the CSI request to the base station by transmitting an uplink control information (UCI) codepoint via a physical uplink control channel (PUCCH) and during an occasion of the PUCCH, and one or more of the UCI codepoint or the occasion indicates the particular A-CSI reporting trigger to the base station.
  • UCI uplink control information
  • PUCCH physical uplink control channel
  • the one or more configuration messages include control data indicating a mapping of the plurality A-CSI reporting triggers to one or both of a plurality of UCI codepoints associated with the PUCCH or a plurality of occasions of the PUCCH, and the method further includes selecting, based on the particular A-CSI reporting trigger, one or both of the UCI codepoint from the plurality of UCI codepoints or the occasion from the plurality of occasions.
  • the method further includes transmitting, by the UE to the base station, an A-CSI report based on the particular A-CSI trigger.
  • the UE transmits the A-CSI report via a physical uplink control channel (PUCCH) .
  • PUCCH physical uplink control channel
  • the UE transmits the A-CSI report via a physical uplink shared channel (PUSCH) .
  • PUSCH physical uplink shared channel
  • transmitting the A-CSI report via the PUSCH is performed based on a configured grant (CG) scheduled by radio resource control (RRC) signaling.
  • CG configured grant
  • RRC radio resource control
  • the method further includes receiving, by the UE from the base station, a response to the CSI request scheduling a dedicated dynamic grant, and the A-CSI report is transmitted via the PUSCH based on the dedicated dynamic grant scheduled by the response.
  • the response includes downlink control information (DCI) indicating the dedicated dynamic grant.
  • DCI downlink control information
  • the PUSCH is scheduled using a two-step contention-based random access (CBRA) procedure, and the A-CSI report is transmitted using a combined random access preamble and scheduled transmission message (Msg A) specified by the two-step CBRA procedure.
  • CBRA contention-based random access
  • the PUSCH is scheduled using a four-step contention-based random access (CBRA) procedure, and the A-CSI report is transmitted using a scheduled transmission message (Msg 3) specified by the four-step CBRA procedure.
  • CBRA contention-based random access
  • a non-transitory computer-readable medium stores instructions executable by a processor to perform operations.
  • the operations include receiving, by a UE, one or more configuration messages indicating a plurality of A-CSI reporting triggers.
  • the operations further include transmitting, by the UE to a base station, a CSI request indicating a particular A-CSI reporting trigger selected by the UE from among the plurality of A-CSI reporting triggers.
  • an apparatus in a twenty-third example alternatively or in addition to one or more of the first through twenty-second examples, includes a memory and one or more processors coupled to the memory.
  • the one or more processors are configured to receive, at a UE, one or more configuration messages indicating a plurality of A-CSI reporting triggers and to transmit, from the UE to a base station, a CSI request indicating a particular A-CSI reporting trigger selected by the UE from among the plurality of A-CSI reporting triggers.
  • an apparatus in a twenty-fourth example alternatively or in addition to one or more of the first through twenty-third examples, includes means for receiving, at a UE, one or more configuration messages indicating a plurality of A-CSI reporting triggers.
  • the apparatus further includes means for transmitting, from the UE to a base station, a CSI request indicating a particular A-CSI reporting trigger selected by the UE from among the plurality of A-CSI reporting triggers.
  • a method of wireless communication includes transmitting, by a base station to a UE, one or more configuration messages indicating a plurality of A-CSI reporting triggers. The method further includes receiving, by the base station from the UE, a CSI request indicating a particular A-CSI reporting trigger from among the plurality of A-CSI reporting triggers.
  • the base station receives the CSI request from the UE via a physical uplink control channel (PUCCH) .
  • PUCCH physical uplink control channel
  • the base station receives the CSI request from the UE via a physical random access channel (PRACH) .
  • PRACH physical random access channel
  • the base station receives the CSI request from the UE via the PRACH based on a contention-based random access (CBRA) procedure.
  • CBRA contention-based random access
  • the base station receives the CSI request from the UE via the PRACH based on a contention-free random access (CFRA) procedure.
  • CFRA contention-free random access
  • the base station receives the CSI request from the UE via the PRACH based on a two-step contention-based random access (CBRA) procedure.
  • CBRA contention-based random access
  • the one or more configuration messages further indicate CSI resources for an A-CSI report associated with the particular A-CSI trigger.
  • the one or more configuration messages further indicate that the CSI resources are periodically scheduled.
  • the one or more configuration messages further indicate that the CSI resources are semi-persistently scheduled.
  • the CSI request is transmitted to the base station by transmitting a preamble via a physical random access channel (PRACH) and during an occasion of the PRACH, and one or more of the preamble or the occasion indicates the particular A-CSI reporting trigger to the base station.
  • PRACH physical random access channel
  • the one or more configuration messages include control data indicating a mapping of the plurality A-CSI reporting triggers to one or both of a plurality of preambles associated with the PRACH or a plurality of occasions of the PRACH, and the UE selects, based on the particular A-CSI reporting trigger, one or both of the preamble from the plurality of preambles or the occasion from the plurality of occasions.
  • the CSI request is transmitted to the base station by transmitting an uplink control information (UCI) codepoint via a physical uplink control channel (PUCCH) and during an occasion of the PUCCH, and one or more of the UCI codepoint or the occasion indicates the particular A-CSI reporting trigger to the base station.
  • UCI uplink control information
  • PUCCH physical uplink control channel
  • the one or more configuration messages include control data indicating a mapping of the plurality A-CSI reporting triggers to one or both of a plurality of UCI codepoints associated with the PUCCH or a plurality of occasions of the PUCCH, and the UE selects, based on the particular A-CSI reporting trigger, one or both of the UCI codepoint from the plurality of UCI codepoints or the occasion from the plurality of occasions.
  • the method further includes receiving, by the base station from the UE, an A-CSI report based on the particular A-CSI trigger.
  • the base station receives the A-CSI report from the UE via a physical uplink control channel (PUCCH) .
  • PUCCH physical uplink control channel
  • the base station receives the A-CSI report from the UE via a physical uplink shared channel (PUSCH) .
  • PUSCH physical uplink shared channel
  • the A-CSI report is received via the PUSCH based on a configured grant (CG) scheduled by radio resource control (RRC) signaling.
  • CG configured grant
  • RRC radio resource control
  • the method further includes receiving, from the UE by the base station, a response to the CSI request scheduling a dedicated dynamic grant, and the A-CSI report is received based on a dedicated dynamic grant scheduled by the response.
  • the response includes downlink control information (DCI) indicating the dedicated dynamic grant.
  • DCI downlink control information
  • the PUSCH is scheduled using a two-step contention-based random access (CBRA) procedure, and the A-CSI report is received using a combined random access preamble and scheduled transmission message (Msg A) specified by the two-step CBRA procedure.
  • CBRA contention-based random access
  • the PUSCH is scheduled using a four-step contention-based random access (CBRA) procedure, and the A-CSI report is received using a scheduled transmission message (Msg 3) specified by the four-step CBRA procedure.
  • CBRA contention-based random access
  • a non-transitory computer-readable medium stores instructions executable by a processor to perform operations.
  • the operations include transmitting, by a base station to a UE, one or more configuration messages indicating a plurality of A-CSI reporting triggers.
  • the operations further include receiving, by the base station from the UE, a CSI request indicating a particular A-CSI reporting trigger from among the plurality of A-CSI reporting triggers.
  • an apparatus in a forty-seventh example alternatively or in addition to one or more of the first through forty-sixth examples, includes a memory and one or more processors coupled to the memory.
  • the one or more processors are configured to transmit, from a base station to a UE, one or more configuration messages indicating a plurality of A-CSI reporting triggers.
  • the one or more processors are further configured to receive, at the base station from the UE, a CSI request indicating a particular A-CSI reporting trigger from among the plurality of A-CSI reporting triggers.
  • an apparatus in a forty-eighth example alternatively or in addition to one or more of the first through forty-seventh examples, includes means for transmitting, from a base station to a UE, one or more configuration messages indicating a plurality of A-CSI reporting triggers.
  • the apparatus further includes means for receiving, at the base station from the UE, a CSI request indicating a particular A-CSI reporting trigger from among the plurality of A-CSI reporting triggers.
  • Components, the functional blocks, and modules described herein may comprise processors, electronics devices, hardware devices, electronics components, logical circuits, memories, software codes, firmware codes, etc., or any combination thereof.
  • processors e.g., the components, functional blocks, and modules in FIG. 2
  • one or more features described herein may be implemented via specialized processor circuitry, via executable instructions, and/or combinations thereof.
  • DSP digital signal processor
  • ASIC application specific integrated circuit
  • FPGA field programmable gate array
  • 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, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.
  • a software module may reside in RAM memory, flash memory, ROM memory, EPROM memory, EEPROM memory, registers, hard disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
  • An exemplary storage medium is coupled to the processor such that the processor can read information from, and write information to, the storage medium.
  • the storage medium may be integral to the processor.
  • the processor and the storage medium may reside in an ASIC.
  • the ASIC may reside in a user terminal.
  • the processor and the storage medium may reside as discrete components in a user terminal.
  • the functions described may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium.
  • Computer-readable media may include any media that can be accessed by a general purpose or special purpose computer.
  • such computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code means in the form of instructions or data structures and that can be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor.
  • Disk and disc includes compact disc (CD) , laser disc, optical disc, digital versatile disc (DVD) , hard disk, solid state disk, and blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers. Combinations of the above are also within the scope of computer-readable media.
  • the term “and/or, ” when used in a list of two or more items means that any one of the listed items can be employed by itself, or any combination of two or more of the listed items can be employed.
  • the composition can contain A alone; B alone; C alone; A and B in combination; A and C in combination; B and C in combination; or A, B, and C in combination.

Landscapes

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

Abstract

Un procédé de communication sans fil consiste à recevoir, par un équipement utilisateur (UE), un ou plusieurs messages de configuration indiquant une pluralité de déclencheurs de rapport d'informations d'état de canal apériodiques (A-CSI). Le procédé consiste en outre à transmettre, par l'UE à une station de base, une demande de CSI indiquant un déclencheur de rapport A-CSI particulier sélectionné par l'UE parmi la pluralité de déclencheurs de rapport A-CSI.
PCT/CN2020/110655 2020-08-22 2020-08-22 Demande de rapport d'informations d'état de canal apériodiques par un équipement utilisateur WO2022040824A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/110655 WO2022040824A1 (fr) 2020-08-22 2020-08-22 Demande de rapport d'informations d'état de canal apériodiques par un équipement utilisateur

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
PCT/CN2020/110655 WO2022040824A1 (fr) 2020-08-22 2020-08-22 Demande de rapport d'informations d'état de canal apériodiques par un équipement utilisateur

Publications (1)

Publication Number Publication Date
WO2022040824A1 true WO2022040824A1 (fr) 2022-03-03

Family

ID=80354330

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/CN2020/110655 WO2022040824A1 (fr) 2020-08-22 2020-08-22 Demande de rapport d'informations d'état de canal apériodiques par un équipement utilisateur

Country Status (1)

Country Link
WO (1) WO2022040824A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024168455A1 (fr) * 2023-02-13 2024-08-22 Qualcomm Incorporated Mesure proactive d'informations csi

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102006624A (zh) * 2010-11-29 2011-04-06 中兴通讯股份有限公司 基站及其通知非周期信道状态信息报告的触发模式的方法
US20140086174A1 (en) * 2012-09-27 2014-03-27 Samsung Electronics Co., Ltd Method and apparatus for transmitting/receiving channel state information
EP3454477A1 (fr) * 2017-09-11 2019-03-13 Intel IP Corporation Mesures d'interférence dans de nouveaux systèmes radio
CN110741580A (zh) * 2017-06-16 2020-01-31 高通股份有限公司 经由pucch来报告非周期性csi
US20200128533A1 (en) * 2017-11-17 2020-04-23 Huawei Technologies Co., Ltd. Information transmission method and apparatus
CN111345092A (zh) * 2017-11-15 2020-06-26 Lg电子株式会社 在无线通信系统中终端发送非周期性信道状态信息的方法以及使用该方法的终端

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102006624A (zh) * 2010-11-29 2011-04-06 中兴通讯股份有限公司 基站及其通知非周期信道状态信息报告的触发模式的方法
US20140086174A1 (en) * 2012-09-27 2014-03-27 Samsung Electronics Co., Ltd Method and apparatus for transmitting/receiving channel state information
CN110741580A (zh) * 2017-06-16 2020-01-31 高通股份有限公司 经由pucch来报告非周期性csi
EP3454477A1 (fr) * 2017-09-11 2019-03-13 Intel IP Corporation Mesures d'interférence dans de nouveaux systèmes radio
CN111345092A (zh) * 2017-11-15 2020-06-26 Lg电子株式会社 在无线通信系统中终端发送非周期性信道状态信息的方法以及使用该方法的终端
US20200128533A1 (en) * 2017-11-17 2020-04-23 Huawei Technologies Co., Ltd. Information transmission method and apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2024168455A1 (fr) * 2023-02-13 2024-08-22 Qualcomm Incorporated Mesure proactive d'informations csi

Similar Documents

Publication Publication Date Title
WO2021072691A1 (fr) Configuration de ressource de référence de csi et de ressource cible de csi pour une estimation prédictive d'informations d'état de canal
WO2021217648A1 (fr) Mesures d'interférence de liaison croisée (cli) pour des ressources de cli
WO2021088043A1 (fr) Configuration d'intervalles de mesure inter-rat
EP4133660A1 (fr) Groupement des signaux de référence de démodulation pour les communications sans fil en duplex intégral
EP4039022A1 (fr) Signalisation d'état tci assistée par un équipement utilisateur (ue) pour la coordination d'interférence
WO2022126062A1 (fr) Configuration pour une ressource de mesure de canal (cmr) ou une restriction temporelle de ressource de mesure d'interférence (imr)
WO2022027429A1 (fr) Techniques multi-faisceau pour le transfert de faibles quantités de données sur des ressources de liaison montante préconfigurées
WO2022040824A1 (fr) Demande de rapport d'informations d'état de canal apériodiques par un équipement utilisateur
WO2021179303A1 (fr) Rapport de marge de puissance pour un mode de fonctionnement en duplex intégral d'un dispositif
WO2021243551A1 (fr) Techniques de transfert intercellulaire ou de redirection d'équipement d'utilisateur de 4g à 5g (sa)
WO2022133472A2 (fr) Rssi spécifique à un faisceau et co pour nr-u
WO2021217558A1 (fr) Configuration à ports multiples dans une mesure de brouillage entre liaisons (cli)
EP4226536A2 (fr) K1 non numérique pour l'autorisation de canal de commande de liaison descendante physique commun de groupe (gc-pdsch) dans un service de diffusion/multidiffusion multimédia (mbms)
WO2022011206A1 (fr) Attribution de ressources pour tonalités de réduction de pic
WO2022006315A1 (fr) Détermination de décalage de déclenchement de csi-rs pour équipement utilisateur (ue)
CN116058012A (zh) 用于无线通信系统的基于组的信令
EP4098028A1 (fr) Sélection de faisceau autonome d'ue
US11825459B2 (en) Mode-based beam management for a user equipment device
WO2022221977A1 (fr) Planification de liaison montante à l'aide d'un paramètre temporel associé à une session de service de l'internet des objets (iot)
WO2021232419A1 (fr) Déclenchement de signal de référence de sondage à l'aide d'informations de commande
WO2021237610A1 (fr) Techniques de planification et de réception de données à faible puissance
WO2022067834A1 (fr) Conception d'un intervalle de transmission de liaison latérale nr
WO2021237589A1 (fr) Procédé permettant d'accélérer un retour d'équipement utilisateur à la 5g à partir de la 4g
EP4193771A1 (fr) Commutation dynamique de canal de commande de liaison montante physique (pucch) entre une liaison montante (ul) et une liaison montante supplémentaire (sul)
WO2022061373A1 (fr) Techniques d'indication et d'identification de ressource pucch implicites perfectionnées

Legal Events

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

Ref document number: 20950499

Country of ref document: EP

Kind code of ref document: A1

NENP Non-entry into the national phase

Ref country code: DE

122 Ep: pct application non-entry in european phase

Ref document number: 20950499

Country of ref document: EP

Kind code of ref document: A1