Event indicators for channel state information reports
The CSI report configuration with event indicators optimizes beam management in 5G NR systems by reducing overhead and latency in CSI reporting, improving the efficiency of wireless communication systems.
Patent Information
- Application Number
- PCT/CN2024/077235
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-02-15
- Publication Date
- 2025-08-21
AI Technical Summary
Existing wireless communication systems, particularly 5G NR, lack efficient mechanisms for UE-initiated or event-driven beam management, leading to increased overhead and latency in channel state information (CSI) reporting.
Implementing a CSI report configuration that includes indicators for specific events, allowing UEs to detect and transmit reports on these events, and network nodes to receive and act on these indicators, thereby optimizing beam management.
Reduces overhead and latency in CSI reporting, enhancing the efficiency of beam management processes.
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Figure CN2024077235_21082025_PF_FP_ABST
Abstract
Description
EVENT INDICATORS FOR CHANNEL STATE INFORMATION REPORTSTECHNICAL FIELD
[0001] The present disclosure relates generally to communication systems, and more particularly, to wireless device reporting systems.
[0002] INTRODUCTION
[0003] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources. Examples of such multiple-access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, and time division synchronous code division multiple access (TD-SCDMA) systems.
[0004] These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate on a municipal, national, regional, and even global level. An example telecommunication standard is 5G New Radio (NR) . 5G NR is part of a continuous mobile broadband evolution promulgated by Third Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with Internet of Things (IoT) ) , and other requirements. 5G NR includes services associated with enhanced mobile broadband (eMBB) , massive machine type communications (mMTC) , and ultra-reliable low latency communications (URLLC) . Some aspects of 5G NR may be based on the 4G Long Term Evolution (LTE) standard. There exists a need for further improvements in 5G NR technology. These improvements may also be applicable to other multi-access technologies and the telecommunication standards that employ these technologies.
[0005] BRIEF SUMMARY
[0006] The following presents a simplified summary of one or more aspects in order to provide a basic understanding of such aspects. This summary is not an extensive overview of all contemplated aspects. This summary neither identifies key or critical elements of all aspects nor delineates the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.
[0007] In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may include a user equipment (UE) . The apparatus may receive a channel state information (CSI) report configuration. The CSI report configuration may include a first indicator of an event associated with a CSI report. The apparatus may detect whether the event has occurred. The apparatus may transmit the CSI report. The CSI report may include a second indicator of whether the event has occurred.
[0008] In an aspect of the disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus may include a network node. The apparatus may transmit a CSI report configuration. The CSI report configuration may include a first indicator of an event associated with a CSI report. The apparatus may receive the CSI report. The CSI report may include a second indicator of whether the event has occurred.
[0009] In some aspects, the techniques described herein relate to a method of wireless communication at a user equipment (UE) , including: receiving a channel state information (CSI) report configuration including a first indicator of an event associated with a CSI report; detecting whether the event has occurred; and transmitting the CSI report including a second indicator of whether the event has occurred.
[0010] In some aspects, the techniques described herein relate to a method, where the event associated with the CSI report includes at least one of: a first measurement of a first set of reference signals (RSs) being less than or equal to a first threshold; a second measurement of a second set of RSs being greater than or equal to the first measurement by a second threshold; a third measurement of a third set of RSs being greater than or equal to a third threshold; a determination that a beam sweeping occasion should be requested; or a fourth measurement of a fourth set of RSs having a reference signal received power (RSRP) order different from a previously measured RSRP order.
[0011] In some aspects, the techniques described herein relate to a method, where receiving the CSI report configuration includes at least one of: receiving a radio resource control (RRC) message including the CSI report configuration; receiving downlink control information (DCI) including the CSI report configuration; or receiving a medium access control (MAC) control element (MAC-CE) including the CSI report configuration.
[0012] In some aspects, the techniques described herein relate to a method, where the CSI report configuration includes a third indicator of a period of time, where transmitting the CSI report includes: periodically transmitting the CSI report via a physical uplink control channel (PUCCH) based on the period of time.
[0013] In some aspects, the techniques described herein relate to a method, further including: receiving a semi-persistent (SP) CSI radio network temporary identifier (RNTI) (SP-CSI-RNTI) or a cell RNTI (C-RNTI) , where the periodic transmission of the CSI report is in response to the reception of the SP-CSI-RNTI or the C-RNTI.
[0014] In some aspects, the techniques described herein relate to a method, where the CSI report configuration includes a third indicator of a second event associated with the CSI report, further including: detecting whether the second event has occurred, where the CSI report includes a fourth indicator of whether the second event has occurred.
[0015] In some aspects, the techniques described herein relate to a method, further including: receiving a second CSI report configuration including a third indicator of a second event associated with a second CSI report; detecting whether the second event has occurred; and transmitting the second CSI report including a fourth indicator of whether the second event has occurred.
[0016] In some aspects, the techniques described herein relate to a method, further including: multiplexing the CSI report and the second CSI report before the transmission of the CSI report.
[0017] In some aspects, the techniques described herein relate to a method, further including: receiving a second CSI report configuration including a third indicator for the UE to measure a channel; receiving a reference signal (RS) associated with the channel based on the second CSI report configuration; measuring the RS; and transmitting a second CSI report including a fourth indicator of the measured RS.
[0018] In some aspects, the techniques described herein relate to a method, further including: multiplexing the CSI report and the second CSI report.
[0019] In some aspects, the techniques described herein relate to a method of wireless communication at a network node, including: transmitting a channel state information (CSI) report configuration including a first indicator of an event associated with a CSI report; and receiving the CSI report including a second indicator of whether the event has occurred.
[0020] In some aspects, the techniques described herein relate to a method, where the event associated with the CSI report includes at least one of: a first measurement of a first set of reference signals (RSs) being less than or equal to a first threshold; a second measurement of a second set of RSs being greater than or equal to the first measurement by a second threshold; a third measurement of a third set of RSs being greater than or equal to a third threshold; a determination that a beam sweeping occasion should be requested; or a fourth measurement of a fourth set of RSs having a reference signal received power (RSRP) order different from a previously measured RSRP order.
[0021] In some aspects, the techniques described herein relate to a method, further including: transmitting a second CSI report configuration including a third indicator for a user equipment (UE) to measure a channel in response to the second indicator indicating that the event has occurred; and receiving a second CSI report based on the second CSI report configuration.
[0022] In some aspects, the techniques described herein relate to a method, where transmitting the CSI report configuration includes at least one of: transmitting a radio resource control (RRC) message including the CSI report configuration; transmitting downlink control information (DCI) including the CSI report configuration; or transmitting a medium access control (MAC) control element (MAC-CE) including the CSI report configuration.
[0023] In some aspects, the techniques described herein relate to a method, where the CSI report configuration includes a third indicator of a period of time, where receiving the CSI report includes: periodically receiving the CSI report via a physical uplink control channel (PUCCH) based on the period of time.
[0024] In some aspects, the techniques described herein relate to a method, further including: transmitting a semi-persistent (SP) CSI radio network temporary identifier (RNTI) (SP-CSI-RNTI) or a cell RNTI (C-RNTI) , where the periodic reception of the CSI report is in response to the reception of the SP-CSI-RNTI or the C-RNTI.
[0025] In some aspects, the techniques described herein relate to a method, where the CSI report configuration includes a third indicator of a second event associated with the CSI report, where the CSI report includes a fourth indicator of whether the second event has occurred.
[0026] In some aspects, the techniques described herein relate to a method, further including: transmitting a second CSI report configuration including a third indicator of a second event associated with a second CSI report; and receiving the second CSI report including a fourth indicator of whether the second event has occurred.
[0027] In some aspects, the techniques described herein relate to a method, where receiving the CSI report and receiving the second CSI report includes: receiving a multiplexed message including the CSI report and the second CSI report.
[0028] In some aspects, the techniques described herein relate to a method, further including: transmitting a second CSI report configuration including a third indicator for a user equipment (UE) to measure a channel; transmitting a reference signal (RS) associated with the channel based on the second CSI report configuration; and receiving a second CSI report including a fourth indicator of a measurement of the RS.
[0029] In some aspects, the techniques described herein relate to a method, where receiving the CSI report and receiving the second CSI report includes: receiving a multiplexed message including the CSI report and the second CSI report.
[0030] To the accomplishment of the foregoing and related ends, the one or more aspects may include the features hereinafter fully described and particularly pointed out in the claims. The following description and the drawings set forth in detail certain illustrative features of the one or more aspects. These features are indicative, however, of but a few of the various ways in which the principles of various aspects may be employed.BRIEF DESCRIPTION OF THE DRAWINGS
[0031] FIG. 1 is a diagram illustrating an example of a wireless communications system and an access network.
[0032] FIG. 2A is a diagram illustrating an example of a first frame, in accordance with various aspects of the present disclosure.
[0033] FIG. 2B is a diagram illustrating an example of downlink (DL) channels within a subframe, in accordance with various aspects of the present disclosure.
[0034] FIG. 2C is a diagram illustrating an example of a second frame, in accordance with various aspects of the present disclosure.
[0035] FIG. 2D is a diagram illustrating an example of uplink (UL) channels within a subframe, in accordance with various aspects of the present disclosure.
[0036] FIG. 3 is a diagram illustrating an example of a base station and user equipment (UE) in an access network.
[0037] FIG. 4A is a diagram illustrating an example of a channel state information (CSI) report format.
[0038] FIG. 4B is a diagram illustrating an example of a channel state information (CSI) report format.
[0039] FIG. 4C is a diagram illustrating an example of a channel state information (CSI) report format.
[0040] FIG. 5 is a diagram illustrating an example of an uplink control information (UCI) bitmap with a set of component carriers, where one component carrier may be used to transmit a plurality of CSI reports.
[0041] FIG. 6 is a connection flow diagram illustrating an example of wireless devices configured to transmit CSI reports that indicate whether an event is detected.
[0042] FIG. 7 is a connection flow diagram illustrating an example of wireless devices configured to transmit CSI reports that indicate whether an event is detected.
[0043] FIG. 8 is a flowchart of a method of wireless communication.
[0044] FIG. 9 is a flowchart of a method of wireless communication.
[0045] FIG. 10 is a diagram illustrating an example of a hardware implementation for an example apparatus and / or network entity.
[0046] FIG. 11 is a diagram illustrating an example of a hardware implementation for an example network entity.
[0047] FIG. 12 is a diagram illustrating an example of a hardware implementation for an example network entity.DETAILED DESCRIPTION
[0048] The following description is directed to examples for the purposes of describing innovative aspects of this disclosure. However, a person having ordinary skill in the art may recognize that the teachings herein may be applied in a multitude of ways. Some or all of the described examples may be implemented in any device, system or network that is capable of transmitting and receiving radio frequency (RF) signals according to one or more of the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standards, the IEEE 802.15 standards, the standards as defined by the Bluetooth Special Interest Group (SIG) , or the Long Term Evolution (LTE) , 3G, 4G or 5G (New Radio (NR) ) standards promulgated by the 3rd Generation Partnership Project (3GPP) , among others. The described examples may be implemented in any device, system or network that is capable of transmitting and receiving RF signals according to one or more of the following technologies or techniques: code division multiple access (CDMA) , time division multiple access (TDMA) , frequency division multiple access (FDMA) , orthogonal FDMA (OFDMA) , single-carrier FDMA (SC-FDMA) , spatial division multiple access (SDMA) , rate-splitting multiple access (RSMA) , multi-user shared access (MUSA) , single-user (SU) multiple-input multiple-output (MIMO) and multi-user (MU) -MIMO. The described examples also may be implemented using other wireless communication protocols or RF signals suitable for use in one or more of a wireless personal area network (WPAN) , a wireless local area network (WLAN) , a wireless wide area network (WWAN) , a wireless metropolitan area network (WMAN) , or an internet of things (IoT) network.
[0049] Various aspects relate generally to wireless device reporting systems. Some aspects more specifically relate to wireless devices configured to transmit channel state information (CSI) reports. In some examples, a user equipment (UE) may receive a CSI report configuration. The CSI report configuration may include a first indicator of an event associated with a CSI report. The UE may detect whether the event has occurred. The UE may transmit the CSI report. The CSI report may include a second indicator of whether the event has occurred. The CSI report may be a layer 1 (L1) report, such as a UE-initiated beam report.
[0050] In some examples, a network node may transmit a CSI report configuration. The CSI report configuration may include a first indicator of an event associated with a CSI report. The network node may receive the CSI report. The CSI report may include a second indicator of whether the event has occurred.
[0051] Particular aspects of the subject matter described in this disclosure can be implemented to realize one or more of the following potential advantages. In some examples, by configuring a CSI report to indicate whether an event is detected at a UE, the described techniques can be used to reduce the overhead and latency in reporting events detected by the UE, for example events that may be used for UE-initiated or event driven beam management.
[0052] The detailed description set forth below in connection with the drawings describes various configurations and does not represent the only configurations in which the concepts described herein may be practiced. The detailed description includes specific details for the purpose of providing a thorough understanding of various concepts. However, these concepts may be practiced without these specific details. In some instances, well known structures and components are shown in block diagram form in order to avoid obscuring such concepts.
[0053] Several aspects of telecommunication systems are presented with reference to various apparatus and methods. These apparatus and methods are described in the following detailed description and illustrated in the accompanying drawings by various blocks, components, circuits, processes, algorithms, etc. (collectively referred to as “elements” ) . These elements may be implemented using electronic hardware, computer software, or any combination thereof. Whether such elements are implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system.
[0054] By way of example, an element, or any portion of an element, or any combination of elements may be implemented as a “processing system” that includes one or more processors. When multiple processors are implemented, the multiple processors may perform the functions individually or in combination. Examples of processors include microprocessors, microcontrollers, graphics processing units (GPUs) , central processing units (CPUs) , application processors, digital signal processors (DSPs) , reduced instruction set computing (RISC) processors, systems on a chip (SoC) , baseband processors, field programmable gate arrays (FPGAs) , programmable logic devices (PLDs) , state machines, gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functionality described throughout this disclosure. One or more processors in the processing system may execute software. Software, whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise, shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software components, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, or any combination thereof.
[0055] Accordingly, in one or more example aspects, implementations, and / or use cases, the functions described may be implemented in hardware, software, or any combination thereof. If implemented in software, the functions may be stored on or encoded as one or more instructions or code on a computer-readable medium. Computer-readable media includes computer storage media. Storage media may be any available media that can be accessed by a computer. By way of example, such computer-readable media can include a random-access memory (RAM) , a read-only memory (ROM) , an electrically erasable programmable ROM (EEPROM) , optical disk storage, magnetic disk storage, other magnetic storage devices, combinations of the types of computer-readable media, or any other medium that can be used to store computer executable code in the form of instructions or data structures that can be accessed by a computer.
[0056] While aspects, implementations, and / or use cases are described in this application by illustration to some examples, additional or different aspects, implementations and / or use cases may come about in many different arrangements and scenarios. Aspects, implementations, and / or use cases described herein may be implemented across many differing platform types, devices, systems, shapes, sizes, and packaging arrangements. For example, aspects, implementations, and / or use cases may come about via integrated chip implementations and other non-module-component based devices (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail / purchasing devices, medical devices, artificial intelligence (AI) -enabled devices, etc. ) . While some examples may or may not be specifically directed to use cases or applications, a wide assortment of applicability of described examples may occur. Aspects, implementations, and / or use cases may range a spectrum from chip-level or modular components to non-modular, non-chip-level implementations and further to aggregate, distributed, or original equipment manufacturer (OEM) devices or systems incorporating one or more techniques herein. In some practical settings, devices incorporating described aspects and features may also include additional components and features for implementation and practice of claimed and described aspect. For example, transmission and reception of wireless signals necessarily includes a number of components for analog and digital purposes (e.g., hardware components including antenna, RF-chains, power amplifiers, modulators, buffer, processor (s) , interleaver, adders / summers, etc. ) . Techniques described herein may be practiced in a wide variety of devices, chip-level components, systems, distributed arrangements, aggregated or disaggregated components, end-user devices, etc. of varying sizes, shapes, and constitution.
[0057] Deployment of communication systems, such as 5G NR systems, may be arranged in multiple manners with various components or constituent parts. In a 5G NR system, or network, a network node, a network entity, a mobility element of a network, a radio access network (RAN) node, a core network node, a network element, or a network equipment, such as a base station (BS) , or one or more units (or one or more components) performing base station functionality, may be implemented in an aggregated or disaggregated architecture. For example, a BS (such as a Node B (NB) , evolved NB (eNB) , NR BS, 5G NB, access point (AP) , a transmission reception point (TRP) , or a cell, etc. ) may be implemented as an aggregated base station (also known as a standalone BS or a monolithic BS) or a disaggregated base station.
[0058] An aggregated base station may be configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node. A disaggregated base station may be configured to utilize a protocol stack that is physically or logically distributed among two or more units (such as one or more central or centralized units (CUs) , one or more distributed units (DUs) , or one or more radio units (RUs) ) . In some aspects, a CU may be implemented within a RAN node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually distributed throughout one or multiple other RAN nodes. The DUs may be implemented to communicate with one or more RUs. Each of the CU, DU and RU can be implemented as virtual units, i.e., a virtual central unit (VCU) , a virtual distributed unit (VDU) , or a virtual radio unit (VRU) .
[0059] Base station operation or network design may consider aggregation characteristics of base station functionality. For example, disaggregated base stations may be utilized in an integrated access backhaul (IAB) network, an open radio access network (O-RAN (such as the network configuration sponsored by the O-RAN Alliance) ) , or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN) ) . Disaggregation may include distributing functionality across two or more units at various physical locations, as well as distributing functionality for at least one unit virtually, which can enable flexibility in network design. The various units of the disaggregated base station, or disaggregated RAN architecture, can be configured for wired or wireless communication with at least one other unit.
[0060] FIG. 1 is a diagram 100 illustrating an example of a wireless communications system and an access network. The illustrated wireless communications system includes a disaggregated base station architecture. The disaggregated base station architecture may include one or more CUs 110 that can communicate directly with a core network 120 via a backhaul link, or indirectly with the core network 120 through one or more disaggregated base station units (such as a Near-Real Time (Near-RT) RAN Intelligent Controller (RIC) 125 via an E2 link, or a Non-Real Time (Non-RT) RIC 115 associated with a Service Management and Orchestration (SMO) Framework 105, or both) . A CU 110 may communicate with one or more DUs 130 via respective midhaul links, such as an F1 interface. The DUs 130 may communicate with one or more RUs 140 via respective fronthaul links. The RUs 140 may communicate with respective UEs 104 via one or more radio frequency (RF) access links. In some implementations, the UE 104 may be simultaneously served by multiple RUs 140.
[0061] Each of the units, i.e., the CUs 110, the DUs 130, the RUs 140, as well as the Near-RT RICs 125, the Non-RT RICs 115, and the SMO Framework 105, may include one or more interfaces or be coupled to one or more interfaces configured to receive or to transmit signals, data, or information (collectively, signals) via a wired or wireless transmission medium. Each of the units, or an associated processor or controller providing instructions to the communication interfaces of the units, can be configured to communicate with one or more of the other units via the transmission medium. For example, the units can include a wired interface configured to receive or to transmit signals over a wired transmission medium to one or more of the other units. Additionally, the units can include a wireless interface, which may include a receiver, a transmitter, or a transceiver (such as an RF transceiver) , configured to receive or to transmit signals, or both, over a wireless transmission medium to one or more of the other units.
[0062] In some aspects, the CU 110 may host one or more higher layer control functions. Such control functions can include radio resource control (RRC) , packet data convergence protocol (PDCP) , service data adaptation protocol (SDAP) , or the like. Each control function can be implemented with an interface configured to communicate signals with other control functions hosted by the CU 110. The CU 110 may be configured to handle user plane functionality (i.e., Central Unit –User Plane (CU-UP) ) , control plane functionality (i.e., Central Unit –Control Plane (CU-CP) ) , or a combination thereof. In some implementations, the CU 110 can be logically split into one or more CU-UP units and one or more CU-CP units. The CU-UP unit can communicate bidirectionally with the CU-CP unit via an interface, such as an E1 interface when implemented in an O-RAN configuration. The CU 110 can be implemented to communicate with the DU 130, as necessary, for network control and signaling.
[0063] The DU 130 may correspond to a logical unit that includes one or more base station functions to control the operation of one or more RUs 140. In some aspects, the DU 130 may host one or more of a radio link control (RLC) layer, a medium access control (MAC) layer, and one or more high physical (PHY) layers (such as modules for forward error correction (FEC) encoding and decoding, scrambling, modulation, demodulation, or the like) depending, at least in part, on a functional split, such as those defined by 3GPP. In some aspects, the DU 130 may further host one or more low PHY layers. Each layer (or module) can be implemented with an interface configured to communicate signals with other layers (and modules) hosted by the DU 130, or with the control functions hosted by the CU 110.
[0064] Lower-layer functionality can be implemented by one or more RUs 140. In some deployments, an RU 140, controlled by a DU 130, may correspond to a logical node that hosts RF processing functions, or low-PHY layer functions (such as performing fast Fourier transform (FFT) , inverse FFT (iFFT) , digital beamforming, physical random access channel (PRACH) extraction and filtering, or the like) , or both, based at least in part on the functional split, such as a lower layer functional split. In such an architecture, the RU (s) 140 can be implemented to handle over the air (OTA) communication with one or more UEs 104. In some implementations, real-time and non-real-time aspects of control and user plane communication with the RU (s) 140 can be controlled by the corresponding DU 130. In some scenarios, this configuration can enable the DU (s) 130 and the CU 110 to be implemented in a cloud-based RAN architecture, such as a vRAN architecture.
[0065] The SMO Framework 105 may be configured to support RAN deployment and provisioning of non-virtualized and virtualized network elements. For non-virtualized network elements, the SMO Framework 105 may be configured to support the deployment of dedicated physical resources for RAN coverage requirements that may be managed via an operations and maintenance interface (such as an O1 interface) . For virtualized network elements, the SMO Framework 105 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) 190) to perform network element life cycle management (such as to instantiate virtualized network elements) via a cloud computing platform interface (such as an O2 interface) . Such virtualized network elements can include, but are not limited to, CUs 110, DUs 130, RUs 140 and Near-RT RICs 125. In some implementations, the SMO Framework 105 can communicate with a hardware aspect of a 4G RAN, such as an open eNB (O-eNB) 111, via an O1 interface. Additionally, in some implementations, the SMO Framework 105 can communicate directly with one or more RUs 140 via an O1 interface. The SMO Framework 105 also may include a Non-RT RIC 115 configured to support functionality of the SMO Framework 105.
[0066] The Non-RT RIC 115 may be configured to include a logical function that enables non-real-time control and optimization of RAN elements and resources, artificial intelligence (AI) / machine learning (ML) (AI / ML) workflows including model training and updates, or policy-based guidance of applications / features in the Near-RT RIC 125. The Non-RT RIC 115 may be coupled to or communicate with (such as via an A1 interface) the Near-RT RIC 125. The Near-RT RIC 125 may be configured to include a logical function that enables near-real-time control and optimization of RAN elements and resources via data collection and actions over an interface (such as via an E2 interface) connecting one or more CUs 110, one or more DUs 130, or both, as well as an O-eNB, with the Near-RT RIC 125.
[0067] In some implementations, to generate AI / ML models to be deployed in the Near-RT RIC 125, the Non-RT RIC 115 may receive parameters or external enrichment information from external servers. Such information may be utilized by the Near-RT RIC 125 and may be received at the SMO Framework 105 or the Non-RT RIC 115 from non-network data sources or from network functions. In some examples, the Non-RT RIC 115 or the Near-RT RIC 125 may be configured to tune RAN behavior or performance. For example, the Non-RT RIC 115 may monitor long-term trends and patterns for performance and employ AI / ML models to perform corrective actions through the SMO Framework 105 (such as reconfiguration via O1) or via creation of RAN management policies (such as A1 policies) .
[0068] At least one of the CU 110, the DU 130, and the RU 140 may be referred to as a base station 102. Accordingly, a base station 102 may include one or more of the CU 110, the DU 130, and the RU 140 (each component indicated with dotted lines to signify that each component may or may not be included in the base station 102) . The base station 102 provides an access point to the core network 120 for a UE 104. The base station 102 may include macrocells (high power cellular base station) and / or small cells (low power cellular base station) . The small cells include femtocells, picocells, and microcells. A network that includes both small cell and macrocells may be known as a heterogeneous network. A heterogeneous network may also include Home Evolved Node Bs (eNBs) (HeNBs) , which may provide service to a restricted group known as a closed subscriber group (CSG) . The communication links between the RUs 140 and the UEs 104 may include uplink (UL) (also referred to as reverse link) transmissions from a UE 104 to an RU 140 and / or downlink (DL) (also referred to as forward link) transmissions from an RU 140 to a UE 104. The communication links may use multiple-input and multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming, and / or transmit diversity. The communication links may be through one or more carriers. The base station 102 / UEs 104 may use spectrum up to Y MHz (e.g., 5, 10, 15, 20, 100, 400, etc. MHz) bandwidth per carrier allocated in a carrier aggregation of up to a total of Yx MHz (x component carriers) used for transmission in each direction. The carriers may or may not be adjacent to each other. Allocation of carriers may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated for DL than for UL) . The component carriers may include a primary component carrier and one or more secondary component carriers. A primary component carrier may be referred to as a primary cell (PCell) and a secondary component carrier may be referred to as a secondary cell (SCell) .
[0069] Certain UEs 104 may communicate with each other using device-to-device (D2D) communication link 158. The D2D communication link 158 may use the DL / UL wireless wide area network (WWAN) spectrum. The D2D communication link 158 may use one or more sidelink channels, such as a physical sidelink broadcast channel (PSBCH) , a physical sidelink discovery channel (PSDCH) , a physical sidelink shared channel (PSSCH) , and a physical sidelink control channel (PSCCH) . D2D communication may be through a variety of wireless D2D communications systems, such as for example, BluetoothTM (Bluetooth is a trademark of the Bluetooth Special Interest Group (SIG) ) , Wi-FiTM (Wi-Fi is a trademark of the Wi-Fi Alliance) based on the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard, LTE, or NR.
[0070] The wireless communications system may further include a Wi-Fi AP 150 in communication with UEs 104 (also referred to as Wi-Fi stations (STAs) ) via communication link 154, e.g., in a 5 GHz unlicensed frequency spectrum or the like. When communicating in an unlicensed frequency spectrum, the UEs 104 / AP 150 may perform a clear channel assessment (CCA) prior to communicating in order to determine whether the channel is available.
[0071] The electromagnetic spectrum is often subdivided, based on frequency / wavelength, into various classes, bands, channels, etc. In 5G NR, two initial operating bands have been identified as frequency range designations FR1 (410 MHz –7.125 GHz) and FR2 (24.25 GHz –52.6 GHz) . Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to (interchangeably) as a “sub-6 GHz” band in various documents and articles. A similar nomenclature issue sometimes occurs with regard to FR2, which is often referred to (interchangeably) as a “millimeter wave” band in documents and articles, despite being different from the extremely high frequency (EHF) band (30 GHz –300 GHz) which is identified by the International Telecommunications Union (ITU) as a “millimeter wave” band.
[0072] The frequencies between FR1 and FR2 are often referred to as mid-band frequencies. Recent 5G NR studies have identified an operating band for these mid-band frequencies as frequency range designation FR3 (7.125 GHz –24.25 GHz) . Frequency bands falling within FR3 may inherit FR1 characteristics and / or FR2 characteristics, and thus may effectively extend features of FR1 and / or FR2 into mid-band frequencies. In addition, higher frequency bands are currently being explored to extend 5G NR operation beyond 52.6 GHz. For example, three higher operating bands have been identified as frequency range designations FR2-2 (52.6 GHz –71 GHz) , FR4 (71 GHz –114.25 GHz) , and FR5 (114.25 GHz –300 GHz) . Each of these higher frequency bands falls within the EHF band.
[0073] With the above aspects in mind, unless specifically stated otherwise, the term “sub-6 GHz” or the like if used herein may broadly represent frequencies that may be less than 6 GHz, may be within FR1, or may include mid-band frequencies. Further, unless specifically stated otherwise, the term “millimeter wave” or the like if used herein may broadly represent frequencies that may include mid-band frequencies, may be within FR2, FR4, FR2-2, and / or FR5, or may be within the EHF band.
[0074] The base station 102 and the UE 104 may each include a plurality of antennas, such as antenna elements, antenna panels, and / or antenna arrays to facilitate beamforming. The base station 102 may transmit a beamformed signal 182 to the UE 104 in one or more transmit directions. The UE 104 may receive the beamformed signal from the base station 102 in one or more receive directions. The UE 104 may also transmit a beamformed signal 184 to the base station 102 in one or more transmit directions. The base station 102 may receive the beamformed signal from the UE 104 in one or more receive directions. The base station 102 / UE 104 may perform beam training to determine the best receive and transmit directions for each of the base station 102 / UE 104. The transmit and receive directions for the base station 102 may or may not be the same. The transmit and receive directions for the UE 104 may or may not be the same.
[0075] The base station 102 may include and / or be referred to as a gNB, Node B, eNB, an access point, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS) , an extended service set (ESS) , a TRP, network node, network entity, network equipment, or some other suitable terminology. The base station 102 can be implemented as an integrated access and backhaul (IAB) node, a relay node, a sidelink node, an aggregated (monolithic) base station with a baseband unit (BBU) (including a CU and a DU) and an RU, or as a disaggregated base station including one or more of a CU, a DU, and / or an RU. The set of base stations, which may include disaggregated base stations and / or aggregated base stations, may be referred to as next generation (NG) RAN (NG-RAN) .
[0076] The core network 120 may include an Access and Mobility Management Function (AMF) 161, a Session Management Function (SMF) 162, a User Plane Function (UPF) 163, a Unified Data Management (UDM) 164, one or more location servers 168, and other functional entities. The AMF 161 is the control node that processes the signaling between the UEs 104 and the core network 120. The AMF 161 supports registration management, connection management, mobility management, and other functions. The SMF 162 supports session management and other functions. The UPF 163 supports packet routing, packet forwarding, and other functions. The UDM 164 supports the generation of authentication and key agreement (AKA) credentials, user identification handling, access authorization, and subscription management. The one or more location servers 168 are illustrated as including a Gateway Mobile Location Center (GMLC) 165 and a Location Management Function (LMF) 166. However, generally, the one or more location servers 168 may include one or more location / positioning servers, which may include one or more of the GMLC 165, the LMF 166, a position determination entity (PDE) , a serving mobile location center (SMLC) , a mobile positioning center (MPC) , or the like. The GMLC 165 and the LMF 166 support UE location services. The GMLC 165 provides an interface for clients / applications (e.g., emergency services) for accessing UE positioning information. The LMF 166 receives measurements and assistance information from the NG-RAN and the UE 104 via the AMF 161 to compute the position of the UE 104. The NG-RAN may utilize one or more positioning methods in order to determine the position of the UE 104. Positioning the UE 104 may involve signal measurements, a position estimate, and an optional velocity computation based on the measurements. The signal measurements may be made by the UE 104 and / or the base station 102 serving the UE 104. The signals measured may be based on one or more of a satellite positioning system (SPS) 170 (e.g., one or more of a Global Navigation Satellite System (GNSS) , global position system (GPS) , non-terrestrial network (NTN) , or other satellite position / location system) , LTE signals, wireless local area network (WLAN) signals, Bluetooth signals, a terrestrial beacon system (TBS) , sensor-based information (e.g., barometric pressure sensor, motion sensor) , NR enhanced cell ID (NR E-CID) methods, NR signals (e.g., multi-round trip time (Multi-RTT) , DL angle-of-departure (DL-AoD) , DL time difference of arrival (DL-TDOA) , UL time difference of arrival (UL-TDOA) , and UL angle-of-arrival (UL-AoA) positioning) , and / or other systems / signals / sensors.
[0077] Examples of UEs 104 include a cellular phone, a smart phone, a session initiation protocol (SIP) phone, a laptop, a personal digital assistant (PDA) , a satellite radio, a global positioning system, a multimedia device, a video device, a digital audio player (e.g., MP3 player) , a camera, a game console, a tablet, a smart device, a wearable device, a vehicle, an electric meter, a gas pump, a large or small kitchen appliance, a healthcare device, an implant, a sensor / actuator, a display, or any other similar functioning device. Some of the UEs 104 may be referred to as IoT devices (e.g., parking meter, gas pump, toaster, vehicles, heart monitor, etc. ) . The UE 104 may also be referred to as a station, a mobile station, 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, a mobile terminal, a wireless terminal, a remote terminal, a handset, a user agent, a mobile client, a client, or some other suitable terminology. In some scenarios, the term UE may also apply to one or more companion devices such as in a device constellation arrangement. One or more of these devices may collectively access the network and / or individually access the network.
[0078] Referring again to FIG. 1, in certain aspects, the UE 104 may have a CSI report transmission component 198 that may be configured to receive a CSI report configuration. The CSI report configuration may include a first indicator of an event associated with a CSI report. The CSI report transmission component 198 may be configured to detect whether the event has occurred. The CSI report transmission component 198 may be configured to transmit the CSI report. The CSI report may include a second indicator of whether the event has occurred. In certain aspects, the base station 102 may have a CSI report reception component 199 that may be configured to transmit a CSI report configuration. The CSI report configuration may include a first indicator of an event associated with a CSI report. The CSI report reception component 199 may be configured to receive the CSI report. The CSI report may include a second indicator of whether the event has occurred.
[0079] FIG. 2A is a diagram 200 illustrating an example of a first subframe within a 5G NR frame structure. FIG. 2B is a diagram 230 illustrating an example of DL channels within a 5G NR subframe. FIG. 2C is a diagram 250 illustrating an example of a second subframe within a 5G NR frame structure. FIG. 2D is a diagram 280 illustrating an example of UL channels within a 5G NR subframe. The 5G NR frame structure may be frequency division duplexed (FDD) in which for a particular set of subcarriers (carrier system bandwidth) , subframes within the set of subcarriers are dedicated for either DL or UL, or may be time division duplexed (TDD) in which for a particular set of subcarriers (carrier system bandwidth) , subframes within the set of subcarriers are dedicated for both DL and UL. In the examples provided by FIGs. 2A, 2C, the 5G NR frame structure is assumed to be TDD, with subframe 4 being configured with slot format 28 (with mostly DL) , where D is DL, U is UL, and F is flexible for use between DL / UL, and subframe 3 being configured with slot format 1 (with all UL) . While subframes 3, 4 are shown with slot formats 1, 28, respectively, any particular subframe may be configured with any of the various available slot formats 0-61. Slot formats 0, 1 are all DL, UL, respectively. Other slot formats 2-61 include a mix of DL, UL, and flexible symbols. UEs are configured with the slot format (dynamically through DL control information (DCI) , or semi-statically / statically through radio resource control (RRC) signaling) through a received slot format indicator (SFI) . Note that the description infra applies also to a 5G NR frame structure that is TDD.
[0080] FIGs. 2A-2D illustrate a frame structure, and the aspects of the present disclosure may be applicable to other wireless communication technologies, which may have a different frame structure and / or different channels. A frame (10 ms) may be divided into 10 equally sized subframes (1 ms) . Each subframe may include one or more time slots. Subframes may also include mini-slots, which may include 7, 4, or 2 symbols. Each slot may include 14 or 12 symbols, depending on whether the cyclic prefix (CP) is normal or extended. For normal CP, each slot may include 14 symbols, and for extended CP, each slot may include 12 symbols. The symbols on DL may be CP orthogonal frequency division multiplexing (OFDM) (CP-OFDM) symbols. The symbols on UL may be CP-OFDM symbols (for high throughput scenarios) or discrete Fourier transform (DFT) spread OFDM (DFT-s-OFDM) symbols (for power limited scenarios; limited to a single stream transmission) . The number of slots within a subframe is based on the CP and the numerology. The numerology defines the subcarrier spacing (SCS) (see Table 1) . The symbol length / duration may scale with 1 / SCS.
[0081] Table 1: Numerology, SCS, and CP
[0082] For normal CP (14 symbols / slot) , different numerologies μ 0 to 4 allow for 1, 2, 4, 8, and 16 slots, respectively, per subframe. For extended CP, the numerology 2 allows for 4 slots per subframe. Accordingly, for normal CP and numerology μ, there are 14 symbols / slot and 2μ slots / subframe. The subcarrier spacing may be equal to 2μ*15 kHz, where μ is the numerology 0 to 4. As such, the numerology μ=0 has a subcarrier spacing of 15 kHz and the numerology μ=4 has a subcarrier spacing of 240 kHz. The symbol length / duration is inversely related to the subcarrier spacing. FIGs. 2A-2D provide an example of normal CP with 14 symbols per slot and numerology μ=2 with 4 slots per subframe. The slot duration is 0.25 ms, the subcarrier spacing is 60 kHz, and the symbol duration is approximately 16.67 μs. Within a set of frames, there may be one or more different bandwidth parts (BWPs) (see FIG. 2B) that are frequency division multiplexed. Each BWP may have a particular numerology and CP (normal or extended) .
[0083] A resource grid may be used to represent the frame structure. Each time slot includes a resource block (RB) (also referred to as physical RBs (PRBs) ) that extends 12 consecutive subcarriers. The resource grid is divided into multiple resource elements (REs) . The number of bits carried by each RE depends on the modulation scheme.
[0084] As illustrated in FIG. 2A, some of the REs carry reference (pilot) signals (RS) for the UE.The RS may include demodulation RS (DM-RS) (indicated as R for one particular configuration, but other DM-RS configurations are possible) and channel state information reference signals (CSI-RS) for channel estimation at the UE. The RS may also include beam measurement RS (BRS) , beam refinement RS (BRRS) , and phase tracking RS (PT-RS) .
[0085] FIG. 2B illustrates an example of various DL channels within a subframe of a frame. The physical downlink control channel (PDCCH) carries DCI within one or more control channel elements (CCEs) (e.g., 1, 2, 4, 8, or 16 CCEs) , each CCE including six RE groups (REGs) , each REG including 12 consecutive REs in an OFDM symbol of an RB. A PDCCH within one BWP may be referred to as a control resource set (CORESET) . A UE is configured to monitor PDCCH candidates in a PDCCH search space (e.g., common search space, UE-specific search space) during PDCCH monitoring occasions on the CORESET, where the PDCCH candidates have different DCI formats and different aggregation levels. Additional BWPs may be located at greater and / or lower frequencies across the channel bandwidth. A primary synchronization signal (PSS) may be within symbol 2 of particular subframes of a frame. The PSS is used by a UE 104 to determine subframe / symbol timing and a physical layer identity. A secondary synchronization signal (SSS) may be within symbol 4 of particular subframes of a frame. The SSS is used by a UE to determine a physical layer cell identity group number and radio frame timing. Based on the physical layer identity and the physical layer cell identity group number, the UE can determine a physical cell identifier (PCI) . Based on the PCI, the UE can determine the locations of the DM-RS. The physical broadcast channel (PBCH) , which carries a master information block (MIB) , may be logically grouped with the PSS and SSS to form a synchronization signal (SS) / PBCH block (also referred to as SS block (SSB) ) . The MIB provides a number of RBs in the system bandwidth and a system frame number (SFN) . The physical downlink shared channel (PDSCH) carries user data, broadcast system information not transmitted through the PBCH such as system information blocks (SIBs) , and paging messages.
[0086] As illustrated in FIG. 2C, some of the REs carry DM-RS (indicated as R for one particular configuration, but other DM-RS configurations are possible) for channel estimation at the base station. The UE may transmit DM-RS for the physical uplink control channel (PUCCH) and DM-RS for the physical uplink shared channel (PUSCH) . The PUSCH DM-RS may be transmitted in the first one or two symbols of the PUSCH. The PUCCH DM-RS may be transmitted in different configurations depending on whether short or long PUCCHs are transmitted and depending on the particular PUCCH format used. The UE may transmit sounding reference signals (SRS) . The SRS may be transmitted in the last symbol of a subframe. The SRS may have a comb structure, and a UE may transmit SRS on one of the combs. The SRS may be used by a base station for channel quality estimation to enable frequency-dependent scheduling on the UL.
[0087] FIG. 2D illustrates an example of various UL channels within a subframe of a frame. The PUCCH may be located as indicated in one configuration. The PUCCH carries uplink control information (UCI) , such as scheduling requests, a channel quality indicator (CQI) , a precoding matrix indicator (PMI) , a rank indicator (RI) , and hybrid automatic repeat request (HARQ) acknowledgment (ACK) (HARQ-ACK) feedback (i.e., one or more HARQ ACK bits indicating one or more ACK and / or negative ACK (NACK) ) . The PUSCH carries data, and may additionally be used to carry a buffer status report (BSR) , a power headroom report (PHR) , and / or UCI.
[0088] FIG. 3 is a block diagram of a base station 310 in communication with a UE 350 in an access network. In the DL, Internet protocol (IP) packets may be provided to a controller / processor 375. The controller / processor 375 implements layer 3 and layer 2 functionality. Layer 3 includes a radio resource control (RRC) layer, and layer 2 includes a service data adaptation protocol (SDAP) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, and a medium access control (MAC) layer. The controller / processor 375 provides RRC layer functionality associated with broadcasting of system information (e.g., MIB, SIBs) , RRC connection control (e.g., RRC connection paging, RRC connection establishment, RRC connection modification, and RRC connection release) , inter radio access technology (RAT) mobility, and measurement configuration for UE measurement reporting; PDCP layer functionality associated with header compression / decompression, security (ciphering, deciphering, integrity protection, integrity verification) , and handover support functions; RLC layer functionality associated with the transfer of upper layer packet data units (PDUs) , error correction through ARQ, concatenation, segmentation, and reassembly of RLC service data units (SDUs) , re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs onto transport blocks (TBs) , demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.
[0089] The transmit (TX) processor 316 and the receive (RX) processor 370 implement layer 1 functionality associated with various signal processing functions. Layer 1, which includes a physical (PHY) layer, may include error detection on the transport channels, forward error correction (FEC) coding / decoding of the transport channels, interleaving, rate matching, mapping onto physical channels, modulation / demodulation of physical channels, and MIMO antenna processing. The TX processor 316 handles mapping to signal constellations based on various modulation schemes (e.g., binary phase-shift keying (BPSK) , quadrature phase-shift keying (QPSK) , M-phase-shift keying (M-PSK) , M-quadrature amplitude modulation (M-QAM) ) . The coded and modulated symbols may then be split into parallel streams. Each stream may then be mapped to an OFDM subcarrier, multiplexed with a reference signal (e.g., pilot) in the time and / or frequency domain, and then combined together using an Inverse Fast Fourier Transform (IFFT) to produce a physical channel carrying a time domain OFDM symbol stream. The OFDM stream is spatially precoded to produce multiple spatial streams. Channel estimates from a channel estimator 374 may be used to determine the coding and modulation scheme, as well as for spatial processing. The channel estimate may be derived from a reference signal and / or channel condition feedback transmitted by the UE 350. Each spatial stream may then be provided to a different antenna 320 via a separate transmitter 318Tx. Each transmitter 318Tx may modulate a radio frequency (RF) carrier with a respective spatial stream for transmission.
[0090] At the UE 350, each receiver 354Rx receives a signal through its respective antenna 352. Each receiver 354Rx recovers information modulated onto an RF carrier and provides the information to the receive (RX) processor 356. The TX processor 368 and the RX processor 356 implement layer 1 functionality associated with various signal processing functions. The RX processor 356 may perform spatial processing on the information to recover any spatial streams destined for the UE 350. If multiple spatial streams are destined for the UE 350, they may be combined by the RX processor 356 into a single OFDM symbol stream. The RX processor 356 then converts the OFDM symbol stream from the time-domain to the frequency domain using a Fast Fourier Transform (FFT) . The frequency domain signal includes a separate OFDM symbol stream for each subcarrier of the OFDM signal. The symbols on each subcarrier, and the reference signal, are recovered and demodulated by determining the most likely signal constellation points transmitted by the base station 310. These soft decisions may be based on channel estimates computed by the channel estimator 358. The soft decisions are then decoded and deinterleaved to recover the data and control signals that were originally transmitted by the base station 310 on the physical channel. The data and control signals are then provided to the controller / processor 359, which implements layer 3 and layer 2 functionality.
[0091] The controller / processor 359 can be associated with at least one memory 360 that stores program codes and data. The at least one memory 360 may be referred to as a computer-readable medium. In the UL, the controller / processor 359 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, and control signal processing to recover IP packets. The controller / processor 359 is also responsible for error detection using an ACK and / or NACK protocol to support HARQ operations.
[0092] Similar to the functionality described in connection with the DL transmission by the base station 310, the controller / processor 359 provides RRC layer functionality associated with system information (e.g., MIB, SIBs) acquisition, RRC connections, and measurement reporting; PDCP layer functionality associated with header compression / decompression, and security (ciphering, deciphering, integrity protection, integrity verification) ; RLC layer functionality associated with the transfer of upper layer PDUs, error correction through ARQ, concatenation, segmentation, and reassembly of RLC SDUs, re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs onto TBs, demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.
[0093] Channel estimates derived by a channel estimator 358 from a reference signal or feedback transmitted by the base station 310 may be used by the TX processor 368 to select the appropriate coding and modulation schemes, and to facilitate spatial processing. The spatial streams generated by the TX processor 368 may be provided to different antenna 352 via separate transmitters 354Tx. Each transmitter 354Tx may modulate an RF carrier with a respective spatial stream for transmission.
[0094] The UL transmission is processed at the base station 310 in a manner similar to that described in connection with the receiver function at the UE 350. Each receiver 318Rx receives a signal through its respective antenna 320. Each receiver 318Rx recovers information modulated onto an RF carrier and provides the information to a RX processor 370.
[0095] The controller / processor 375 can be associated with at least one memory 376 that stores program codes and data. The at least one memory 376 may be referred to as a computer-readable medium. In the UL, the controller / processor 375 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover IP packets. The controller / processor 375 is also responsible for error detection using an ACK and / or NACK protocol to support HARQ operations.
[0096] At least one of the TX processor 368, the RX processor 356, and the controller / processor 359 may be configured to perform aspects in connection with the CSI report transmission component 198 of FIG. 1.
[0097] At least one of the TX processor 316, the RX processor 370, and the controller / processor 375 may be configured to perform aspects in connection with the CSI report reception component 199 of FIG. 1.
[0098] FIG. 4A is a diagram illustrating an example of a CSI report format 400. The CSI report format 400 may be for a layer 1 (L1) CSI report that is triggered by a network node, such as a fifth generation (5G) next generation base station (gNB) . The CSI report format 400 may include a report ID 402, a carrier ID 404, a set of resource indicators 406, a report configuration type 408, a report quantity 410, and a set of measurements 412. The report ID 402 may be an index of a CSI report configuration, where a value of 1 may correspond with a first entry and a value of 2 may correspond with a second entry. The carrier ID 404 may be an index of a serving cell for the reporting device, for example the serving cell or a UE. The carrier ID 404 may be an index of a serving cell in which CSI resources are measured by the wireless device. The set of resource indicators 406 may indicate resources used by the wireless device associated with the report. The set of resource indicators 406 may indicate resources that the wireless device used for channel measurement. In some aspects, the indicated resources may contain SSB resources or non-zero power (NZP) CSI-RS (NZP-CSI-RS) resources. The set of resource indicators 406 may indicate resources for interference measurement (IM) , which also may be referred to as CSI IM. The set of resource indicators 406 may indicate resources for NZP-CSI-RS IM. The report configuration type 408 may indicate a type of report configuration, for example aperiodic, periodic, or semi-periodic. The report quantity 410 may indicate what kind of quantity is reported (e.g., SSB reference signal received power (RSRP) , channel quality indicator (CQI) , precoding matrix indicator (PMI) , rank indication (RI) , layer indicator (LI) ) . The set of measurements 412 may indicate measurements that the wireless device measured, for example a list of RSRPs or a list of CQIs that the wireless device measured.
[0099] The CSI report format 400 may be used by a wireless device to transmit a CSI report of a set of measurements by a wireless device. The set of measurements may be used to perform beam management with the wireless device. For example, a network node may receive such a CSI report and determine which beams are optimal for communication with the wireless device. The CSI report format 400 may also be referred to as a legacy CSI report format. The legacy CSI report format may be used to report a measurement RS and an RS quantity or quality, rather than reporting an event.
[0100] FIG. 4B is a diagram illustrating an example of a CSI report format 430. The CSI report format 430 may be for an L1 CSI report that is initiated by a UE. In other words, the CSI report format 430 may be for a UE-initiated beam report. The CSI report format 430 may include a report ID 432 and an event indicator 434. The report ID 432 may be an index of a CSI report configuration, where a value of 1 may correspond with a first entry and a value of 2 may correspond with a second entry. The event indicator 434 may be a bitmap that indicates whether an event occurred. For example, a 0 may indicate that the wireless device did not detect the event and a 1 may indicate that the wireless device detected the event.
[0101] The CSI report format 430 may be used by a wireless device to indicate whether a predefined event was detected by the wireless device. Such events may be defined by a CSI report configuration. A network node may transmit such a CSI report configuration to a UE. The UE that receives the CSI report configuration may report whether such events are detected by the UE in such a CSI report.
[0102] For example, the CSI report configuration may configure the UE to report whether a reference beam set (e.g., the current beams used by the UE) have a quality that is less than or equal to a threshold (e.g., RSRP less than X) . In another example, the CSI report configuration may configure the UE to report whether a new beam set is better than a reference beam set by an offset value or more (e.g., RSRP greater than previous measurement by X or more) . In another example, the CSI report configuration may configure the UE to report whether a new beam set is better than an absolute threshold (e.g., RSRP greater than or equal to X) . In another example, the CSI report configuration may configure the UE to report whether a reference beam set becomes worse than a threshold value and a new beam set becomes better than another threshold value (e.g., RSRP of beam 1 is ≤ X and RSRP for beam 2 is ≥ Y) . In another example, the CSI report configuration may configure the UE to report whether a beam sweeping event occurred (e.g., UE rotation event, an indicated transmission configuration indication (TCI) shows indications that a P3 beam sweeping would improve conditions) . In another example, the CSI report configuration may configure the UE to report whether the order of a beam's measurements has changed since a previous report (e.g., RSRP order is different for current set of beams than the RSRP order of a previous set of beams) .
[0103] A network node that receives such a report may perform beam management based on the event indication. For example, upon receiving an indicator that a beam sweeping event occurred (e.g., UE rotates) , the network node may perform P3 beam sweeping on the UE.
[0104] FIG. 4C is a diagram illustrating an example of a CSI report format 460. The CSI report format 460 may be for an L1 CSI report that is initiated by a UE. In other words, the CSI report format 460 may be for a UE-initiated beam report. The CSI report format 460 may include a report ID 462 and a set of event indicators 464. The report ID 462 may be an index of a CSI report configuration, where a value of 1 may correspond with a first entry and a value of 2 may correspond with a second entry. The set of event indicators 464 may be a bitmap that indicates whether a set of events occurred, where each bit in the bit map may indicate whether the wireless device detected the event. For example, a 0 may indicate that the wireless device did not detect the event and a 1 may indicate that the wireless device detected the event.
[0105] The CSI report format 460 may be used by a wireless device to indicate whether a set of events were detected by the wireless device. Such events may be defined by a CSI report configuration. A network node may transmit such a CSI report configuration to a UE. The UE that receives the CSI report configuration may report whether such events are detected by the UE in such a CSI report. A network node that receives such a report may perform beam management based on the event indications.
[0106] In some aspects, a UE may be configured to use one or more CSI report formats to transmit CSI reports. For example, a UE may be configured to use the CSI report format 400 for a CSI report triggered by a network node, or to use the CSI report format 430 or the CSI report format 460 for a CSI report that is UE-initiated.
[0107] In some aspects, a network node may configure a CSI report configuration via a radio resource control (RRC) message. The RRC message may configure the UE to transmit periodical indications in a CSI report on a physical uplink control channel (PUCCH) . The RRC message may configure the UE to transmit semi-persistent indications in a CSI report on PUCCH. In some aspects, a network node may configure a CSI report configuration via downlink control information (DCI) . For example, DCI scrambled by a semi-persistent (SP) CSI radio network temporary identifier (RNTI) (SP-CSI-RNTI) may trigger a UE to transmit semi-persistent indications in a CSI report on PUSCH. In another example, DCI scrambled by a cell RNTI (C-RNTI) may trigger a UE to transmit semi-persistent indications in a CSI report on PUSCH.
[0108] In some aspects, a CSI report configuration may configure a UE to transmit an event indication in a CSI report, without transmitting other indications, to save overhead. Each bit in the CSI report may be used to indicate whether an event is detected by the UE, where a codepoint 0 is used to indicate that the event was not detected and a codepoint 1 is used to indicate that the event was detected. In other words, a first CSI report (e.g., a report using the CSI report format 400) may be used to indicate an RS index and an RS metric and not to indicate whether an event is detected by the UE, and a second CSI report (e.g., a report using the CSI report format 430 or the CSI report format 460) may be used to indicate whether an event is detected by the UE and not to indicate an RS index nor an RS metric.
[0109] FIG. 5 is a diagram illustrating an example of an uplink control information (UCI) bitmap 500. The UCI bitmap 500 may include a set of component carriers, illustrated as component carrier (CC) 1 and CC 2. One of the set of component carriers (e.g., CC 1) may be used to transmit event indications. In other words, different CSI reports with event indications may be sorted for one reporting instance as a bitmap. In some aspects, a UE may multiplex the plurality of reports for transmitting the plurality of reports in a single reporting instance. CC1 may be used to report a set of CSI reports, shown here as CSI report 502, CSI report 504, and CSI report 506. CSI report 502 may include three event indicators, CSI report 504 may include two event indicators, and CSI report 506 may include one event indicator. A CSI report configuration may indicate an order of the CSI reports in a multiplexed transmission, for example indicating to report cell IDs first, CSI report IDs second, and event IDs third. In some aspects, different types of CSI reports may be multiplexed, for example a CSI report using the CSI report format 400 and a CSI report using the CSI report format 460.
[0110] FIG. 6 is a connection flow diagram 600 illustrating an example of a UE 602 and a network node 604 configured to transmit and receive CSI reports that indicate whether an event is detected. The network node 604 may be a base station, for example a TRP.
[0111] The network node 604 may transmit a capability request 606 to the UE 602. The UE 602 may receive the capability request 606 from the network node 604. The capability request 606 may include an indicator of a request by the network node 604 for a capability of the UE 602 to transmit CSI reports that include indicators of whether the UE 602 has detected an event. In some aspects, such capabilities may be indicated by the UE 602 indicating that it is configured to transmit UE-initiated beam reports.
[0112] The UE 602 may transmit a UE capability 608 to the network node 604. The network node 604 may receive the UE capability 608 from the UE 602. The UE capability 608 may include an indicator of whether the UE 602 is configured to transmit CSI reports that include indicators of whether the UE 602 has detected an event. The UE capability 608 may include an indicator of whether the UE 602 is configured to transmit UE-initiated beam reports.
[0113] At 610, the network node 604 may configure a set of CSI configurations for the UE 602. In some aspects, the network node 604 may configure the set of CSI configurations based on the UE capability 608. In some aspects, the network node 604 may configure the set of CSI configurations even if the network node 604 does not receive a UE capability from the UE 602. The network node 604 may transmit a set of CSI report configurations 612 to the UE 602 based on the configurations configured at 610. The UE 602 may receive the set of CSI report configurations 612 from the network node 604. The network node 604 may transmit an RRC message including the set of CSI report configurations 612. The network node 604 may transmit DCI including the set of CSI report configurations 612. The network node 604 may transmit a MAC-CE including the set of CSI report configurations 612. The MAC-CE or the DCI may indicate a CSI report configuration based on a scrambling technique, for example a transmission scrambled by SP-CSI-RNTI or C-RNTI may indicate for the UE 602 to activate semi-persistent indications.
[0114] The set of CSI report configurations 612 may configure the UE 602 to transmit a CSI report that includes an indicator of whether the UE 602 has detected if one or more events have occurred. For example, the set of CSI report configurations 612 may configure the UE 602 to report whether a measurement of a set of RSs is less than or equal to a threshold value. In another example, the set of CSI report configurations 612 may configure the UE 602 to report whether a measurement of a set of RSs is greater than or equal to an earlier measurement by an offset value. In another example, the set of CSI report configurations 612 may configure the UE 602 to report whether a measurement of a set of RSs is greater than or equal to a threshold value. In another example, the set of CSI report configurations 612 may configure the UE 602 to report whether a first set of RSs is less than or equal to a first threshold value and a second set of RSs is greater than or equal to a second threshold value. In another example, the set of CSI report configurations 612 may configure the UE 602 to report whether the UE 602 determines that a beam sweeping occasion should be requested (e.g., a UE rotation has occurred) . In another example, the set of CSI report configurations 612 may configure the UE 602 to report whether a measurement of a set of RSs has an RSRP order different than a previously measured RSRP order.
[0115] Each of the set of CSI report configurations 612 may be associated with a CSI report. The set of CSI report configurations 612 may indicate an order for the UE 602 to transmit CSI reports, if the UE 602 transmit the CSI reports in a single reporting instance.
[0116] At 616, the UE 602 may detect whether one or more of the events indicated in the set of CSI report configurations 612 has occurred. The UE 602 may transmit a set of CSI reports 618 to the network node 604. The network node 604 may receive the set of CSI reports 618 from the UE 602. The set of CSI reports 618 may include one or more indicators of whether the UE 602 detected an event at 616 based on the set of CSI report configurations 612. In some aspects, the UE 602 may transmit each of the set of CSI reports 618 serially. In some aspects, the UE 602 may multiplex at least some of the set of CSI reports 618 in a single reporting instance. In some aspects, the set of CSI report configurations 612 may configure the UE 602 to transmit CSI reports periodically, or semi-periodically. The UE may then repeat detecting the events at 616 and transmitting periodic CSI reports based on the set of CSI report configurations 612. The network node 604 may further decide beam management with the UE 602 based on the received event indicators.
[0117] FIG. 7 is a connection flow diagram 700 illustrating an example of a UE 702 and a network node 704 configured to transmit and receive CSI reports that indicate whether an event is detected. The network node 704 may be a base station, for example a TRP.
[0118] The network node 704 may transmit a capability request 706 to the UE 702. The UE 702 may receive the capability request 706 from the network node 704. The capability request 706 may include an indicator of a request by the network node 704 for a capability of the UE 702 to transmit CSI reports that include indicators of whether the UE 702 has detected an event. In some aspects, such capabilities may be indicated by the UE 702 indicating that it is configured to transmit UE-initiated beam reports.
[0119] The UE 702 may transmit a UE capability 708 to the network node 704. The network node 704 may receive the UE capability 708 from the UE 702. The UE capability 708 may include an indicator of whether the UE 702 is configured to transmit CSI reports that include indicators of whether the UE 702 has detected an event. The UE capability 708 may include an indicator of whether the UE 702 is configured to transmit UE-initiated beam reports.
[0120] At 710, the network node 704 may configure a set of CSI configurations for the UE 702. In some aspects, the network node 704 may configure the set of CSI configurations based on the UE capability 708. In some aspects, the network node 704 may configure the set of CSI configurations even if the network node 704 does not receive a UE capability from the UE 702. The network node 704 may transmit a set of CSI report configurations 712 to the UE 702 based on the configurations configured at 710. The UE 702 may receive the set of CSI report configurations 712 from the network node 704. The network node 704 may transmit an RRC message including the set of CSI report configurations 712. The network node 704 may transmit DCI including the set of CSI report configurations 712. The network node 704 may transmit a MAC-CE including the set of CSI report configurations 712. The MAC-CE or the DCI may indicate a CSI report configuration based on a scrambling technique, for example a transmission scrambled by SP-CSI-RNTI or C-RNTI may indicate for the UE 702 to activate semi-persistent indications.
[0121] In some aspects, the network node 704 may also configure network node-triggered CSI reports, for example beam management CSI reports. The network node 704 may configure the UE 602 to measure a set of CSI-RSs 714 and report measurements of the set of CSI-RSs 714.
[0122] The set of CSI report configurations 712 may configure the UE 702 to transmit a CSI report that includes an indicator of whether the UE 702 has detected if one or more events have occurred. For example, the set of CSI report configurations 712 may configure the UE 702 to report whether a measurement of a set of RSs is less than or equal to a threshold value. In another example, the set of CSI report configurations 712 may configure the UE 702 to report whether a measurement of a set of RSs is greater than or equal to an earlier measurement by an offset value. In another example, the set of CSI report configurations 712 may configure the UE 702 to report whether a measurement of a set of RSs is greater than or equal to a threshold value. In another example, the set of CSI report configurations 712 may configure the UE 702 to report whether a first set of RSs is less than or equal to a first threshold value and a second set of RSs is greater than or equal to a second threshold value. In another example, the set of CSI report configurations 712 may configure the UE 702 to report whether the UE 702 determines that a beam sweeping occasion should be requested (e.g., a UE rotation has occurred) . In another example, the set of CSI report configurations 712 may configure the UE 702 to report whether a measurement of a set of RSs has an RSRP order different than a previously measured RSRP order.
[0123] The set of CSI report configurations 712 may configure the UE 702 to measure the set of CSI-RSs 714 and report such measurements to the network node 704.
[0124] Each of the set of CSI report configurations 712 may be associated with a CSI report. The set of CSI report configurations 712 may indicate an order for the UE 702 to transmit CSI reports, if the UE 702 transmit the CSI reports in a single reporting instance.
[0125] The network node 704 may transmit the set of CSI-RSs 714 to the UE 702. The UE 702 may receive the set of CSI-RSs 714 from the network node 704. At 715, the UE 702 may measure the set of CSI-RSs 714 based on the set of CSI report configurations 712.
[0126] At 716, the UE 702 may detect whether one or more of the events indicated in the set of CSI report configurations 712 has occurred. The UE 702 may transmit a set of CSI reports 718 to the network node 704. The network node 704 may receive the set of CSI reports 718 from the UE 702. The set of CSI reports 718 may include one or more indicators of whether the UE 702 detected an event at 716 based on the set of CSI report configurations 712. The set of CSI reports 718 may include one or more indicators of measurements that the UE 702 performed at 715. In some aspects, the UE 702 may transmit each of the set of CSI reports 718 serially. In some aspects, the UE 702 may multiplex at least some of the set of CSI reports 718 in a single reporting instance. In some aspects, the set of CSI report configurations 712 may configure the UE 702 to transmit CSI reports periodically, or semi-periodically. The UE may then repeat detecting the events at 716 and transmitting periodic CSI reports based on the set of CSI report configurations 712.
[0127] FIG. 8 is a flowchart 800 of a method of wireless communication. The method may be performed by a UE (e.g., the UE 104, the UE 350, the UE 602, the UE 702; the apparatus 1004) . At 802, the UE may receive a CSI report configuration. The CSI report configuration may include a first indicator of an event associated with a CSI report. For example, 802 may be performed by the UE 702 in FIG. 7, which may receive the set of CSI report configurations 712 from the network node 704. The set of CSI report configurations 712 may include an indicator of a set of events associated with the set of CSI reports 718. Moreover, 802 may be performed by the component 198 in FIGs. 1, 3, or 10.
[0128] At 804, the UE may detect whether the event has occurred. For example, 804 may be performed by the UE 702 in FIG. 7, which may, at 716, detect whether each of the set of events indicated in the set of CSI report configurations 712 has occurred. Moreover, 804 may be performed by the component 198 in FIGs. 1, 3, or 10.
[0129] At 806, the UE may transmit a CSI report based on the CSI report configuration. The CSI report may include a second indicator of whether the event has occurred. For example, 806 may be performed by the UE 702 in FIG. 7, which may transmit the set of CSI reports 718 based on the CSI report configuration. The set of CSI reports 718 may include an indicator of whether the set of events indicated in the set of CSI report configurations 712 has occurred. Moreover, 806 may be performed by the component 198 in FIGs. 1, 3, or 10.
[0130] FIG. 9 is a flowchart 900 of a method of wireless communication. The method may be performed by a network node (e.g., the base station 102, the base station 310; the network node 604, the network node 704; the network entity 1002, the network entity 1102, the network entity 1260) . At 902, the network node may transmit a CSI report. The CSI report may include a first indicator of an event associated with the CSI reports. For example, 902 may be performed by the network node 704 in FIG. 7, which may transmit the set of CSI report configurations 712. The set of CSI report configurations 712 may include an indicator of a set of events associated with the set of CSI reports 718. Moreover, 902 may be performed by the component 199 in FIGs. 1, 3, 11, or 12.
[0131] At 904, the network node may receive a CSI report based on the CSI report configuration. The CSI report may include a second indicator of whether the event has occurred. For example, 904 may be performed by the network node 704 in FIG. 7, which may receive the set of CSI reports 718 from the UE 702 based on the set of CSI report configurations 712. The CSI report may include a second indicator of whether the event has occurred. Moreover, 904 may be performed by the component 199 in FIGs. 1, 3, 11, or 12.
[0132] FIG. 10 is a diagram 1000 illustrating an example of a hardware implementation for an apparatus 1004. The apparatus 1004 may be a UE, a component of a UE, or may implement UE functionality. In some aspects, the apparatus 1004 may include at least one cellular baseband processor 1024 (also referred to as a modem) coupled to one or more transceivers 1022 (e.g., cellular RF transceiver) . The cellular baseband processor (s) 1024 may include at least one on-chip memory 1024'. In some aspects, the apparatus 1004 may further include one or more subscriber identity modules (SIM) cards 1020 and at least one application processor 1006 coupled to a secure digital (SD) card 1008 and a screen 1010. The application processor (s) 1006 may include on-chip memory 1006'. In some aspects, the apparatus 1004 may further include a Bluetooth module 1012, a WLAN module 1014, an SPS module 1016 (e.g., GNSS module) , one or more sensor modules 1018 (e.g., barometric pressure sensor / altimeter; motion sensor such as inertial measurement unit (IMU) , gyroscope, and / or accelerometer (s) ; light detection and ranging (LIDAR) , radio assisted detection and ranging (RADAR) , sound navigation and ranging (SONAR) , magnetometer, audio and / or other technologies used for positioning) , additional memory modules 1026, a power supply 1030, and / or a camera 1032. The Bluetooth module 1012, the WLAN module 1014, and the SPS module 1016 may include an on-chip transceiver (TRX) (or in some cases, just a receiver (RX) ) . The Bluetooth module 1012, the WLAN module 1014, and the SPS module 1016 may include their own dedicated antennas and / or utilize the antennas 1080 for communication. The cellular baseband processor (s) 1024 communicates through the transceiver (s) 1022 via one or more antennas 1080 with the UE 104 and / or with an RU associated with a network entity 1002. The cellular baseband processor (s) 1024 and the application processor (s) 1006 may each include a computer-readable medium / memory 1024', 1006', respectively. The additional memory modules 1026 may also be considered a computer-readable medium / memory. Each computer-readable medium / memory 1024', 1006', 1026 may be non-transitory. The cellular baseband processor (s) 1024 and the application processor (s) 1006 are each responsible for general processing, including the execution of software stored on the computer-readable medium / memory. The software, when executed by the cellular baseband processor (s) 1024 / application processor (s) 1006, causes the cellular baseband processor (s) 1024 / application processor (s) 1006 to perform the various functions described supra. The cellular baseband processor (s) 1024 and the application processor (s) 1006 are configured to perform the various functions described supra based at least in part of the information stored in the memory. That is, the cellular baseband processor (s) 1024 and the application processor (s) 1006 may be configured to perform a first subset of the various functions described supra without information stored in the memory and may be configured to perform a second subset of the various functions described supra based on the information stored in the memory. The computer-readable medium / memory may also be used for storing data that is manipulated by the cellular baseband processor (s) 1024 / application processor (s) 1006 when executing software. The cellular baseband processor (s) 1024 / application processor (s) 1006 may be a component of the UE 350 and may include the at least one memory 360 and / or at least one of the TX processor 368, the RX processor 356, and the controller / processor 359. In one configuration, the apparatus 1004 may be at least one processor chip (modem and / or application) and include just the cellular baseband processor (s) 1024 and / or the application processor (s) 1006, and in another configuration, the apparatus 1004 may be the entire UE (e.g., see UE 350 of FIG. 3) and include the additional modules of the apparatus 1004.
[0133] As discussed supra, the component 198 may be configured to receive a CSI report configuration. The CSI report configuration may include a first indicator of an event associated with a CSI report. The component 198 may be configured to detect whether the event has occurred. The component 198 may be configured to transmit the CSI report. The CSI report may include a second indicator of whether the event has occurred. The component 198 may be within the cellular baseband processor (s) 1024, the application processor (s) 1006, or both the cellular baseband processor (s) 1024 and the application processor (s) 1006. The component 198 may be one or more hardware components specifically configured to carry out the stated processes / algorithm, implemented by one or more processors configured to perform the stated processes / algorithm, stored within a computer-readable medium for implementation by one or more processors, or some combination thereof. When multiple processors are implemented, the multiple processors may perform the stated processes / algorithm individually or in combination. As shown, the apparatus 1004 may include a variety of components configured for various functions. In one configuration, the apparatus 1004, and in particular the cellular baseband processor (s) 1024 and / or the application processor (s) 1006, may include means for receiving a CSI report configuration. The CSI report configuration may include a first indicator of an event associated with a CSI report. The apparatus 1004 may include means for detecting whether the event has occurred. The apparatus 1004 may include means for transmitting the CSI report. The CSI report may include a second indicator of whether the event has occurred based on the CSI report configuration. The event associated with the CSI report may include a first measurement of a first set of RSs being less than or equal to a first threshold. The event associated with the CSI report may include a second measurement of a second set of RSs being greater than or equal to the first measurement by a second threshold. The event associated with the CSI report may include a third measurement of a third set of RSs being greater than or equal to a third threshold. The event associated with the CSI report may include a determination that a beam sweeping occasion should be requested. The event associated with the CSI report may include a fourth measurement of a fourth set of RSs having an RSRP order different from a previously measured RSRP order. The apparatus 1004 may include means for receiving the CSI report configuration by receiving an RRC message. The RRC message may include the CSI report configuration. The apparatus 1004 may include means for receiving the CSI report configuration by receiving DCI. The DCI may include the CSI report configuration. The apparatus 1004 may include means for receiving the CSI report configuration by receiving a MAC-CE. The MAC-CE may include the CSI report configuration. The CSI report configuration may include a third indicator of a period of time. The apparatus 1004 may include means for transmitting the CSI report by periodically transmitting the CSI report via a PUCCH based on the period of time. The apparatus 1004 may include means for receiving an SP-CSI-RNTI. The periodic transmission of the CSI report may be in response to the reception of the SP-CSI-RNTI. The apparatus 1004 may include means for receiving a C-RNTI. The periodic transmission of the CSI report may be in response to the reception of the C-RNTI. The CSI report configuration may include a third indicator of a second event associated with the CSI report. The apparatus 1004 may include means for detecting whether the second event has occurred. The CSI report may include a fourth indicator of whether the second event has occurred. The apparatus 1004 may include means for receiving a second CSI report configuration. The third CSI report configuration may include a third indicator of a second event associated with a second CSI report. The apparatus 1004 may include means for detecting whether the second event has occurred. The apparatus 1004 may include means for transmitting the second CSI report. The second CSI report may include a fourth indicator of whether the second event has occurred. The apparatus 1004 may include means for multiplexing the CSI report and the second CSI report before the transmission of the CSI report. The apparatus 1004 may include means for receiving a second CSI report configuration. The second CSI report configuration may include a third indicator for the apparatus 1004 to measure a channel. The apparatus 1004 may include means for receiving an RS associated with the channel based on the second CSI report configuration. The apparatus 1004 may include means for measuring the RS. The apparatus 1004 may include means for transmitting a second CSI report. The second CSI report may include a fourth indicator of the measured RS. The apparatus 1004 may include means for multiplexing the CSI report and the second CSI report. The means may be the component 198 of the apparatus 1004 configured to perform the functions recited by the means. As described supra, the apparatus 1004 may include the TX processor 368, the RX processor 356, and the controller / processor 359. As such, in one configuration, the means may be the TX processor 368, the RX processor 356, and / or the controller / processor 359 configured to perform the functions recited by the means.
[0134] FIG. 11 is a diagram 1100 illustrating an example of a hardware implementation for a network entity 1102. The network entity 1102 may be a BS, a component of a BS, or may implement BS functionality. The network entity 1102 may include at least one of a CU 1110, a DU 1130, or an RU 1140. For example, depending on the layer functionality handled by the component 199, the network entity 1102 may include the CU 1110; both the CU 1110 and the DU 1130; each of the CU 1110, the DU 1130, and the RU 1140; the DU 1130; both the DU 1130 and the RU 1140; or the RU 1140. The CU 1110 may include at least one CU processor 1112. The CU processor (s) 1112 may include on-chip memory 1112'. In some aspects, the CU 1110 may further include additional memory modules 1114 and a communications interface 1118. The CU 1110 communicates with the DU 1130 through a midhaul link, such as an F1 interface. The DU 1130 may include at least one DU processor 1132. The DU processor (s) 1132 may include on-chip memory 1132'. In some aspects, the DU 1130 may further include additional memory modules 1134 and a communications interface 1138. The DU 1130 communicates with the RU 1140 through a fronthaul link. The RU 1140 may include at least one RU processor 1142. The RU processor (s) 1142 may include on-chip memory 1142'. In some aspects, the RU 1140 may further include additional memory modules 1144, one or more transceivers 1146, antennas 1180, and a communications interface 1148. The RU 1140 communicates with the UE 104. The on-chip memory 1112', 1132', 1142' and the additional memory modules 1114, 1134, 1144 may each be considered a computer-readable medium / memory. Each computer-readable medium / memory may be non-transitory. Each of the processors 1112, 1132, 1142 is responsible for general processing, including the execution of software stored on the computer-readable medium / memory. The software, when executed by the corresponding processor (s) causes the processor (s) to perform the various functions described supra. The computer-readable medium / memory may also be used for storing data that is manipulated by the processor (s) when executing software.
[0135] As discussed supra, the component 199 may be configured to transmit a CSI report configuration. The CSI report configuration may include a first indicator of an event associated with a CSI report. The component 199 may be configured to receive the CSI report. The CSI report may include a second indicator of whether the event has occurred. The component 199 may be within one or more processors of one or more of the CU 1110, DU 1130, and the RU 1140. The component 199 may be one or more hardware components specifically configured to carry out the stated processes / algorithm, implemented by one or more processors configured to perform the stated processes / algorithm, stored within a computer-readable medium for implementation by one or more processors, or some combination thereof. When multiple processors are implemented, the multiple processors may perform the stated processes / algorithm individually or in combination. The network entity 1102 may include a variety of components configured for various functions. In one configuration, the network entity 1102 may include means for transmitting a CSI report configuration. The CSI report configuration may include a first indicator of an event associated with a CSI report. The network entity 1102 may include means for receiving the CSI report. The CSI report may include a second indicator of whether the event has occurred based on the CSI report configuration. The event associated with the CSI report may include a first measurement of a first set of RSs being less than or equal to a first threshold. The event associated with the CSI report may include a second measurement of a second set of RSs being greater than or equal to the first measurement by a second threshold. The event associated with the CSI report may include a third measurement of a third set of RSs being greater than or equal to a third threshold. The event associated with the CSI report may include a determination that a beam sweeping occasion should be requested. The event associated with the CSI report may include a fourth measurement of a fourth set of RSs having an RSRP order different from a previously measured RSRP order. The network entity 1102 may include means for transmitting a second CSI report configuration in response to the second indicator indicating that the event has occurred. The second CSI report configuration may include a third indicator for a UE to measure a channel. The network entity 1102 may include means for receiving a second CSI report based on the second CSI report configuration. The network entity 1102 may include means for transmitting the CSI report configuration by transmitting an RRC message. The RRC message may include the CSI report configuration. The network entity 1102 may include means for transmitting the CSI report configuration by transmitting DCI. The DCI may include the CSI report configuration. The network entity 1102 may include means for transmitting the CSI report configuration by transmitting a MAC-CE. The MAC-CE may include the CSI report configuration. The CSI report configuration may include a third indicator of a period of time. The network entity 1102 may include means for receiving the CSI report by periodically receiving the CSI report via a PUCCH based on the period of time. The network entity 1102 may include means for transmitting an SP-CSI-RNTI. The periodic reception of the CSI report may be in response to the reception of the SP-CSI-RNTI. The network entity 1102 may include means for transmitting a C-RNTI. The periodic reception of the CSI report is in response to the reception of the C-RNTI. The CSI report configuration may include a third indicator of a second event associated with the CSI report. The CSI report may include a fourth indicator of whether the second event has occurred. The network entity 1102 may include means for transmitting a second CSI report configuration. The second CSI report configuration may include a third indicator of a second event associated with a second CSI report. The network entity 1102 may include means for receiving the second CSI report. The second CSI report may include a fourth indicator of whether the second event has occurred. The network entity 1102 may include means for receiving the CSI report and receiving the second CSI report by receiving a multiplexed message. The multiplexed message may include the CSI report and the second CSI report. The network entity 1102 may include means for transmitting a second CSI report configuration. The second CSI report configuration may include a third indicator for a UE to measure a channel. The network entity 1102 may include means for transmitting an RS associated with the channel based on the second CSI report configuration. The network entity 1102 may include means for receiving a second CSI report. The second CSI report may include a fourth indicator of a measurement of the RS. The network entity 1102 may include means for receiving the CSI report and receiving the second CSI report by receiving a multiplexed message. The multiplexed message may include the CSI report and the second CSI report. The network entity 1102 may include means for receiving a second CSI report configuration. The second CSI report configuration may include a third indicator of a second event associated with a second CSI report. The network entity 1102 may include means for detecting whether the second event has occurred. The network entity 1102 may include means for multiplexing the CSI report and the second CSI report before the transmission of the CSI report. The second CSI report may include a fourth indicator of whether the second event has occurred. The network entity 1102 may include means for transmitting the CSI report by transmitting the multiplexed CSI report and the second CSI report. The network entity 1102 may include means for receiving a second CSI report configuration. The second CSI report configuration may include a third indicator for the UE to measure a channel. The network entity 1102 may include means for receiving an RS associated with the channel based on the second CSI report configuration. The network entity 1102 may include means for measuring the RS. The network entity 1102 may include means for multiplexing the CSI report and a second CSI report including a fourth indicator of the measured RS before the transmission of the CSI report. The network entity 1102 may include means for transmitting the CSI report by transmitting the second CSI report. The network entity 1102 may include means for transmitting a second CSI report configuration. The second CSI report configuration may include a third indicator of a second event associated with a second CSI report. The network entity 1102 may include means for receiving the CSI report and receiving the second CSI report by receiving a multiplexed message including the CSI report and the second CSI report. The second CSI report may include a fourth indicator of whether the second event has occurred. The network entity 1102 may include means for transmitting a second CSI report configuration. The second CSI report configuration may include a third indicator for a UE to measure a channel. The network entity 1102 may include means for transmitting an RS associated with the channel based on the second CSI report configuration. The network entity 1102 may include means for receiving the CSI report and receiving the second CSI report by receiving a multiplexed message including the CSI report and a second CSI report. The second CSI report may include a fourth indicator of a measurement of the RS. The means may be the component 199 of the network entity 1102 configured to perform the functions recited by the means. As described supra, the network entity 1102 may include the TX processor 316, the RX processor 370, and the controller / processor 375. As such, in one configuration, the means may be the TX processor 316, the RX processor 370, and / or the controller / processor 375 configured to perform the functions recited by the means.
[0136] FIG. 12 is a diagram 1200 illustrating an example of a hardware implementation for a network entity 1260. In one example, the network entity 1260 may be within the core network 120. The network entity 1260 may include at least one network processor 1212. The network processor (s) 1212 may include on-chip memory 1212'. In some aspects, the network entity 1260 may further include additional memory modules 1214. The network entity 1260 communicates via the network interface 1280 directly (e.g., backhaul link) or indirectly (e.g., through a RIC) with the CU 1202. The on-chip memory 1212' and the additional memory modules 1214 may each be considered a computer-readable medium / memory. Each computer-readable medium / memory may be non-transitory. The network processor (s) 1212 is responsible for general processing, including the execution of software stored on the computer-readable medium / memory. The software, when executed by the corresponding processor (s) causes the processor (s) to perform the various functions described supra. The computer-readable medium / memory may also be used for storing data that is manipulated by the processor (s) when executing software.
[0137] As discussed supra, the component 199 may be configured to transmit a CSI report configuration. The CSI report configuration may include a first indicator of an event associated with a CSI report. The component 199 may be configured to receive the CSI report. The CSI report may include a second indicator of whether the event has occurred. The component 199 may be within the network processor (s) 1212. The component 199 may be one or more hardware components specifically configured to carry out the stated processes / algorithm, implemented by one or more processors configured to perform the stated processes / algorithm, stored within a computer-readable medium for implementation by one or more processors, or some combination thereof. When multiple processors are implemented, the multiple processors may perform the stated processes / algorithm individually or in combination. The network entity 1260 may include a variety of components configured for various functions. In one configuration, the network entity 1260 may include means for transmitting a CSI report configuration. The CSI report configuration may include a first indicator of an event associated with a CSI report. The network entity 1260 may include means for receiving the CSI report. The CSI report may include a second indicator of whether the event has occurred based on the CSI report configuration. The event associated with the CSI report may include a first measurement of a first set of RSs being less than or equal to a first threshold. The event associated with the CSI report may include a second measurement of a second set of RSs being greater than or equal to the first measurement by a second threshold. The event associated with the CSI report may include a third measurement of a third set of RSs being greater than or equal to a third threshold. The event associated with the CSI report may include a determination that a beam sweeping occasion should be requested. The event associated with the CSI report may include a fourth measurement of a fourth set of RSs having an RSRP order different from a previously measured RSRP order. The network entity 1260 may include means for transmitting a second CSI report configuration in response to the second indicator indicating that the event has occurred. The second CSI report configuration may include a third indicator for a UE to measure a channel. The network entity 1260 may include means for receiving a second CSI report based on the second CSI report configuration. The network entity 1260 may include means for transmitting the CSI report configuration by transmitting an RRC message. The RRC message may include the CSI report configuration. The network entity 1260 may include means for transmitting the CSI report configuration by transmitting DCI. The DCI may include the CSI report configuration. The network entity 1260 may include means for transmitting the CSI report configuration by transmitting a MAC-CE. The MAC-CE may include the CSI report configuration. The CSI report configuration may include a third indicator of a period of time. The network entity 1260 may include means for receiving the CSI report by periodically receiving the CSI report via a PUCCH based on the period of time. The network entity 1260 may include means for transmitting an SP-CSI-RNTI. The periodic reception of the CSI report may be in response to the reception of the SP-CSI-RNTI. The network entity 1260 may include means for transmitting a C-RNTI. The periodic reception of the CSI report is in response to the reception of the C-RNTI. The CSI report configuration may include a third indicator of a second event associated with the CSI report. The CSI report may include a fourth indicator of whether the second event has occurred. The network entity 1260 may include means for transmitting a second CSI report configuration. The second CSI report configuration may include a third indicator of a second event associated with a second CSI report. The network entity 1260 may include means for receiving the second CSI report. The second CSI report may include a fourth indicator of whether the second event has occurred. The network entity 1260 may include means for receiving the CSI report and receiving the second CSI report by receiving a multiplexed message. The multiplexed message may include the CSI report and the second CSI report. The network entity 1260 may include means for transmitting a second CSI report configuration. The second CSI report configuration may include a third indicator for a UE to measure a channel. The network entity 1260 may include means for transmitting an RS associated with the channel based on the second CSI report configuration. The network entity 1260 may include means for receiving a second CSI report. The second CSI report may include a fourth indicator of a measurement of the RS. The network entity 1260 may include means for receiving the CSI report and receiving the second CSI report by receiving a multiplexed message. The multiplexed message may include the CSI report and the second CSI report. The network entity 1260 may include means for receiving a second CSI report configuration. The second CSI report configuration may include a third indicator of a second event associated with a second CSI report. The network entity 1260 may include means for detecting whether the second event has occurred. The network entity 1260 may include means for multiplexing the CSI report and the second CSI report before the transmission of the CSI report. The second CSI report may include a fourth indicator of whether the second event has occurred. The network entity 1260 may include means for transmitting the CSI report by transmitting the multiplexed CSI report and the second CSI report. The network entity 1260 may include means for receiving a second CSI report configuration. The second CSI report configuration may include a third indicator for the UE to measure a channel. The network entity 1260 may include means for receiving an RS associated with the channel based on the second CSI report configuration. The network entity 1260 may include means for measuring the RS. The network entity 1260 may include means for multiplexing the CSI report and a second CSI report including a fourth indicator of the measured RS before the transmission of the CSI report. The network entity 1260 may include means for transmitting the CSI report by transmitting the second CSI report. The network entity 1260 may include means for transmitting a second CSI report configuration. The second CSI report configuration may include a third indicator of a second event associated with a second CSI report. The network entity 1260 may include means for receiving the CSI report and receiving the second CSI report by receiving a multiplexed message including the CSI report and the second CSI report. The second CSI report may include a fourth indicator of whether the second event has occurred. The network entity 1260 may include means for transmitting a second CSI report configuration. The second CSI report configuration may include a third indicator for a UE to measure a channel. The network entity 1260 may include means for transmitting an RS associated with the channel based on the second CSI report configuration. The network entity 1260 may include means for receiving the CSI report and receiving the second CSI report by receiving a multiplexed message including the CSI report and a second CSI report. The second CSI report may include a fourth indicator of a measurement of the RS. The means may be the component 199 of the network entity 1260 configured to perform the functions recited by the means.
[0138] It is understood that the specific order or hierarchy of blocks in the processes / flowcharts disclosed is an illustration of example approaches. Based upon design preferences, it is understood that the specific order or hierarchy of blocks in the processes / flowcharts may be rearranged. Further, some blocks may be combined or omitted. The accompanying method claims present elements of the various blocks in a sample order, and are not limited to the specific order or hierarchy presented.
[0139] The previous description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be readily apparent to those skilled in the art, and the generic principles defined herein may be applied to other aspects. Thus, the claims are not limited to the aspects described herein, but are to be accorded the full scope consistent with the language claims. Reference to an element in the singular does not mean “one and only one” unless specifically so stated, but rather “one or more. ” Terms such as “if, ” “when, ” and “while” do not imply an immediate temporal relationship or reaction. That is, these phrases, e.g., “when, ” do not imply an immediate action in response to or during the occurrence of an action, but simply imply that if a condition is met then an action will occur, but without requiring a specific or immediate time constraint for the action to occur. The word “exemplary” is used herein to mean “serving as an example, instance, or illustration. ” Any aspect described herein as “exemplary” is not necessarily to be construed as preferred or advantageous over other aspects. Unless specifically stated otherwise, the term “some” refers to one or more. Combinations such as “at least one of A, B, or C, ” “one or more of A, B, or C, ” “at least one of A, B, and C, ” “one or more of A, B, and C, ” and “A, B, C, or any combination thereof” include any combination of A, B, and / or C, and may include multiples of A, multiples of B, or multiples of C. Specifically, combinations such as “at least one of A, B, or C, ” “one or more of A, B, or C, ” “at least one of A, B, and C, ” “one or more of A, B, and C, ” and “A, B, C, or any combination thereof” may be A only, B only, C only, A and B, A and C, B and C, or A and B and C, where any such combinations may contain one or more member or members of A, B, or C. Sets should be interpreted as a set of elements where the elements number one or more. Accordingly, for a set of X, X would include one or more elements. When at least one processor is configured to perform a set of functions, the at least one processor, individually or in any combination, is configured to perform the set of functions. Accordingly, each processor of the at least one processor may be configured to perform a particular subset of the set of functions, where the subset is the full set, a proper subset of the set, or an empty subset of the set. A processor may be referred to as processor circuitry. A memory / memory module may be referred to as memory circuitry. If a first apparatus receives data from or transmits data to a second apparatus, the data may be received / transmitted directly between the first and second apparatuses, or indirectly between the first and second apparatuses through a set of apparatuses. A device configured to “output” data or “provide” data, such as a transmission, signal, or message, may transmit the data, for example with a transceiver, may send the data to a component of the device that transmits the data, or may send the data to a component of the device. A device configured to “obtain” data, such as a transmission, signal, or message, may receive, for example with a transceiver, may obtain the data from a component of the device that receives the data, or may obtain the data from a component of the device. Information stored in a memory includes instructions and / or data. All structural and functional equivalents to the elements of the various aspects described throughout this disclosure that are known or later come to be known to those of ordinary skill in the art are expressly incorporated herein by reference and are encompassed by the claims. Moreover, nothing disclosed herein is dedicated to the public regardless of whether such disclosure is explicitly recited in the claims. The words “module, ” “mechanism, ” “element, ” “device, ” and the like may not be a substitute for the word “means. ” As such, no claim element is to be construed as a means plus function unless the element is expressly recited using the phrase “means for. ”
[0140] As used herein, the phrase “based on” shall not be construed as a reference to a closed set of information, one or more conditions, one or more factors, or the like. In other words, the phrase “based on A” (where “A” may be information, a condition, a factor, or the like) shall be construed as “based at least on A” unless specifically recited differently.
[0141] The following aspects are illustrative only and may be combined with other aspects or teachings described herein, without limitation.
[0142] Aspect 1 is a method of wireless communication at a user equipment (UE) , comprising: receiving a channel state information (CSI) report configuration comprising a first indicator of an event associated with a CSI report; detecting whether the event has occurred; and transmitting the CSI report comprising a second indicator of whether the event has occurred based on the CSI report configuration.
[0143] Aspect 2 is the method of aspect 1, wherein the event associated with the CSI report comprises at least one of: a first measurement of a first set of reference signals (RSs) being less than or equal to a first threshold; a second measurement of a second set of RSs being greater than or equal to the first measurement by a second threshold; a third measurement of a third set of RSs being greater than or equal to a third threshold; a determination that a beam sweeping occasion should be requested; or a fourth measurement of a fourth set of RSs having a reference signal received power (RSRP) order different from a previously measured RSRP order.
[0144] Aspect 3 is the method of either of aspects 1 or 2, wherein receiving the CSI report configuration comprises at least one of: receiving a radio resource control (RRC) message comprising the CSI report configuration; receiving downlink control information (DCI) comprising the CSI report configuration; or receiving a medium access control (MAC) control element (MAC-CE) comprising the CSI report configuration.
[0145] Aspect 4 is the method of any of aspects 1 to 3, wherein the CSI report configuration comprises a third indicator of a period of time, wherein transmitting the CSI report comprises: periodically transmitting the CSI report via a physical uplink control channel (PUCCH) based on the period of time.
[0146] Aspect 5 is the method of aspect 4, further comprising: receiving a semi-persistent (SP) CSI radio network temporary identifier (RNTI) (SP-CSI-RNTI) or a cell RNTI (C-RNTI) , wherein the periodic transmission of the CSI report is in response to the reception of the SP-CSI-RNTI or the C-RNTI.
[0147] Aspect 6 is the method of any of aspects 1 to 5, wherein the CSI report configuration comprises a third indicator of a second event associated with the CSI report, further comprising: detecting whether the second event has occurred, wherein the CSI report comprises a fourth indicator of whether the second event has occurred.
[0148] Aspect 7 is the method of any of aspects 1 to 6, further comprising: receiving a second CSI report configuration comprising a third indicator of a second event associated with a second CSI report; detecting whether the second event has occurred; and transmitting the second CSI report comprising a fourth indicator of whether the second event has occurred.
[0149] Aspect 8 is the method of aspect 7, further comprising: multiplexing the CSI report and the second CSI report before the transmission of the CSI report.
[0150] Aspect 9 is the method of any of aspects 1 to 7, further comprising: receiving a second CSI report configuration comprising a third indicator for the UE to measure a channel; receiving a reference signal (RS) associated with the channel based on the second CSI report configuration; measuring the RS; and transmitting a second CSI report comprising a fourth indicator of the measured RS.
[0151] Aspect 10 is the method of aspect 9, further comprising: multiplexing the CSI report and the second CSI report.
[0152] Aspect 11 is a method of wireless communication at a network node, comprising: transmitting a channel state information (CSI) report configuration comprising a first indicator of an event associated with a CSI report; and receiving the CSI report comprising a second indicator of whether the event has occurred based on the CSI report configuration.
[0153] Aspect 12 is the method of aspect 11, wherein the event associated with the CSI report comprises at least one of: a first measurement of a first set of reference signals (RSs) being less than or equal to a first threshold; a second measurement of a second set of RSs being greater than or equal to the first measurement by a second threshold; a third measurement of a third set of RSs being greater than or equal to a third threshold; a determination that a beam sweeping occasion should be requested; or a fourth measurement of a fourth set of RSs having a reference signal received power (RSRP) order different from a previously measured RSRP order.
[0154] Aspect 13 is the method of either of aspects 11 or 12, further comprising: transmitting a second CSI report configuration comprising a third indicator for a user equipment (UE) to measure a channel in response to the second indicator indicating that the event has occurred; and receiving a second CSI report based on the second CSI report configuration.
[0155] Aspect 14 is the method of any of aspects 11 to 13, wherein transmitting the CSI report configuration comprises at least one of: transmitting a radio resource control (RRC) message comprising the CSI report configuration; transmitting downlink control information (DCI) comprising the CSI report configuration; or transmitting a medium access control (MAC) control element (MAC-CE) comprising the CSI report configuration.
[0156] Aspect 15 is the method of any of aspects 11 to 14, wherein the CSI report configuration comprises a third indicator of a period of time, wherein receiving the CSI report comprises: periodically receiving the CSI report via a physical uplink control channel (PUCCH) based on the period of time.
[0157] Aspect 16 is the method of aspect 15, further comprising: transmitting a semi-persistent (SP) CSI radio network temporary identifier (RNTI) (SP-CSI-RNTI) or a cell RNTI (C-RNTI) , wherein the periodic reception of the CSI report is in response to the reception of the SP-CSI-RNTI or the C-RNTI.
[0158] Aspect 17 is the method of any of aspects 11 to 16, wherein the CSI report configuration comprises a third indicator of a second event associated with the CSI report, wherein the CSI report comprises a fourth indicator of whether the second event has occurred.
[0159] Aspect 18 is the method of any of aspects 11 to 17, further comprising: transmitting a second CSI report configuration comprising a third indicator of a second event associated with a second CSI report; and receiving the second CSI report comprising a fourth indicator of whether the second event has occurred.
[0160] Aspect 19 is the method of aspect 18, wherein receiving the CSI report and receiving the second CSI report comprises: receiving a multiplexed message comprising the CSI report and the second CSI report.
[0161] Aspect 20 is the method of any of aspects 11 to 19, further comprising: transmitting a second CSI report configuration comprising a third indicator for a user equipment (UE) to measure a channel; transmitting a reference signal (RS) associated with the channel based on the second CSI report configuration; and receiving a second CSI report comprising a fourth indicator of a measurement of the RS.
[0162] Aspect 21 is the method of aspect 20, wherein receiving the CSI report and receiving the second CSI report comprises receiving a multiplexed message comprising the CSI report and the second CSI report.
[0163] Aspect 22 is the method of any of aspects 1 to 10, further comprising: receiving a second CSI report configuration comprising a third indicator of a second event associated with a second CSI report; detecting whether the second event has occurred; and multiplexing the CSI report and the second CSI report before the transmission of the CSI report, wherein the second CSI report comprises a fourth indicator of whether the second event has occurred, wherein transmitting the CSI report comprises: transmitting the multiplexed CSI report and the second CSI report.
[0164] Aspect 23 is the method of any of aspects 1 to 10, further comprising: receiving a second CSI report configuration comprising a third indicator for the UE to measure a channel; receiving a reference signal (RS) associated with the channel based on the second CSI report configuration; measuring the RS; and multiplexing the CSI report and a second CSI report comprising a fourth indicator of the measured RS before the transmission of the CSI report, wherein transmitting the CSI report comprises: transmitting the second CSI report.
[0165] Aspect 24 is the method of any of aspects 11 to 21, further comprising: transmitting a second CSI report configuration comprising a third indicator of a second event associated with a second CSI report, wherein receiving the CSI report and receiving the second CSI report comprises: receiving a multiplexed message comprising the CSI report and the second CSI report, wherein the second CSI report comprises a fourth indicator of whether the second event has occurred.
[0166] Aspect 25 is the method of any of aspects 11 to 12, further comprising: transmitting a second CSI report configuration comprising a third indicator for a user equipment (UE) to measure a channel; and transmitting a reference signal (RS) associated with the channel based on the second CSI report configuration, wherein receiving the CSI report and receiving the second CSI report comprises: receiving a multiplexed message comprising the CSI report and a second CSI report, wherein the second CSI report comprises a fourth indicator of a measurement of the RS.
[0167] Aspect 26 is an apparatus for wireless communication, comprising: at least one memory; and at least one processor coupled to the at least one memory and, based at least in part on information stored in the at least one memory, the at least one processor, individually or in any combination, is configured to perform the method of any of aspects 1 to 25.
[0168] Aspect 27 is an apparatus for wireless communication, comprising means for performing each step in the method of any of aspects 1 to 25.
[0169] Aspect 28 is the apparatus of any of aspects 1 to 25, further comprising a transceiver (e.g., functionally connected to the at least one processor of Aspect 26) configured to receive or to transmit in association with the method of any of aspects 1 to 25.
[0170] Aspect 29 is a computer-readable medium (e.g., a non-transitory computer-readable medium) storing computer executable code, the code when executed by at least one processor causes the at least one processor, individually or in any combination, to perform the method of any of aspects 1 to 25.
Claims
1.An apparatus for wireless communication at a user equipment (UE) , comprising:at least one memory; andat least one processor coupled to the at least one memory and, based at least in part on information stored in the at least one memory, the at least one processor, individually or in any combination, is configured to:receive a channel state information (CSI) report configuration comprising a first indicator of an event associated with a CSI report;detect whether the event has occurred; andtransmit the CSI report comprising a second indicator of whether the event has occurred based on the CSI report configuration.2.The apparatus of claim 1, wherein the event associated with the CSI report comprises at least one of:a first measurement of a first set of reference signals (RSs) being less than or equal to a first threshold;a second measurement of a second set of RSs being greater than or equal to the first measurement by a second threshold;a third measurement of a third set of RSs being greater than or equal to a third threshold;a determination that a beam sweeping occasion should be requested; ora fourth measurement of a fourth set of RSs having a reference signal received power (RSRP) order different from a previously measured RSRP order.3.The apparatus of claim 1, wherein, to receive the CSI report configuration, the at least one processor, individually or in any combination, is configured to:receive a radio resource control (RRC) message comprising the CSI report configuration;receive downlink control information (DCI) comprising the CSI report configuration; orreceive a medium access control (MAC) control element (MAC-CE) comprising the CSI report configuration.4.The apparatus of claim 1, wherein the CSI report configuration comprises a third indicator of a period of time, wherein, to transmit the CSI report, the at least one processor, individually or in any combination, is configured to:periodically transmit the CSI report via a physical uplink control channel (PUCCH) based on the period of time.5.The apparatus of claim 4, wherein the at least one processor, individually or in any combination, is further configured to:receive a semi-persistent (SP) CSI radio network temporary identifier (RNTI) (SP-CSI-RNTI) or a cell RNTI (C-RNTI) , wherein the periodic transmission of the CSI report is in response to the reception of the SP-CSI-RNTI or the C-RNTI.6.The apparatus of claim 1, wherein the CSI report configuration comprises a third indicator of a second event associated with the CSI report, wherein the at least one processor, individually or in any combination, is further configured to:detect whether the second event has occurred, wherein the CSI report comprises a fourth indicator of whether the second event has occurred.7.The apparatus of claim 1, wherein the at least one processor, individually or in any combination, is further configured to:receive a second CSI report configuration comprising a third indicator of a second event associated with a second CSI report;detect whether the second event has occurred; andtransmit the second CSI report comprising a fourth indicator of whether the second event has occurred.8.The apparatus of claim 7, wherein the at least one processor, individually or in any combination, is further configured to:multiplex the CSI report and the second CSI report before the transmission of the CSI report.9.The apparatus of claim 1, wherein the at least one processor, individually or in any combination, is further configured to:receive a second CSI report configuration comprising a third indicator for the UE to measure a channel;receive a reference signal (RS) associated with the channel based on the second CSI report configuration;measure the RS; andtransmit a second CSI report comprising a fourth indicator of the measured RS.10.The apparatus of claim 9, wherein the at least one processor, individually or in any combination, is further configured to:multiplex the CSI report and the second CSI report.11.The apparatus of claim 1, further comprising a transceiver coupled to the at least one processor, wherein the at least one processor, individually or in any combination, is further configured to:receive, via the transceiver, the CSI report configuration; andtransmit, via the transceiver, the CSI report.12.An apparatus for wireless communication at a network node, comprising:at least one memory; andat least one processor coupled to the at least one memory and, based at least in part on information stored in the at least one memory, the at least one processor, individually or in any combination, is configured to:transmit a channel state information (CSI) report configuration comprising a first indicator of an event associated with a CSI report; andreceive the CSI report comprising a second indicator of whether the event has occurred based on the CSI report configuration.13.The apparatus of claim 12, wherein the event associated with the CSI report comprises at least one of:a first measurement of a first set of reference signals (RSs) being less than or equal to a first threshold;a second measurement of a second set of RSs being greater than or equal to the first measurement by a second threshold;a third measurement of a third set of RSs being greater than or equal to a third threshold;a determination that a beam sweeping occasion should be requested; ora fourth measurement of a fourth set of RSs having a reference signal received power (RSRP) order different from a previously measured RSRP order.14.The apparatus of claim 12, wherein the at least one processor, individually or in any combination, is further configured to:transmit a second CSI report configuration comprising a third indicator for a user equipment (UE) to measure a channel in response to the second indicator indicating that the event has occurred; andreceive a second CSI report based on the second CSI report configuration.15.The apparatus of claim 12, wherein, to transmit the CSI report configuration, the at least one processor, individually or in any combination, is configured to:transmit a radio resource control (RRC) message comprising the CSI report configuration;transmit downlink control information (DCI) comprising the CSI report configuration; ortransmit a medium access control (MAC) control element (MAC-CE) comprising the CSI report configuration.16.The apparatus of claim 12, wherein the CSI report configuration comprises a third indicator of a period of time, wherein, to receive the CSI report, the at least one processor, individually or in any combination, is configured to:periodically receive the CSI report via a physical uplink control channel (PUCCH) based on the period of time.17.The apparatus of claim 16, wherein the at least one processor, individually or in any combination, is further configured to:transmit a semi-persistent (SP) CSI radio network temporary identifier (RNTI) (SP-CSI-RNTI) or a cell RNTI (C-RNTI) , wherein the periodic reception of the CSI report is in response to the reception of the SP-CSI-RNTI or the C-RNTI.18.The apparatus of claim 12, wherein the CSI report configuration comprises a third indicator of a second event associated with the CSI report, wherein the CSI report comprises a fourth indicator of whether the second event has occurred.19.The apparatus of claim 12, further comprising a transceiver coupled to the at least one processor, wherein the at least one processor, individually or in any combination, is further configured to:transmit, via the transceiver, a second CSI report configuration comprising a third indicator of a second event associated with a second CSI report; andreceive, via the transceiver, the second CSI report comprising a fourth indicator of whether the second event has occurred.20.A method of wireless communication at a user equipment (UE) , comprising:receiving a channel state information (CSI) report configuration comprising a first indicator of an event associated with a CSI report;detecting whether the event has occurred; andtransmitting the CSI report comprising a second indicator of whether the event has occurred.
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