CSI processing unit symbol occupation for event-driven CSI report
By establishing rules for CPU occupation in event-driven CSI reporting, the inefficiencies in CPU utilization for skipped CSI reports are addressed, enhancing CSI reporting efficiency in 5G NR systems.
Patent Information
- Application Number
- PCT/CN2024/086224
- Authority / Receiving Office
- WO · WO
- Patent Type
- Applications
- Current Assignee / Owner
- Filing Date
- 2024-04-05
- Publication Date
- 2025-10-09
AI Technical Summary
In wireless communication systems, particularly 5G NR, the occupation of CSI processing units (CPUs) for event-driven CSI reports can be wasteful when the report is skipped due to unmet event conditions, leading to inefficiencies in CPU utilization and reduced CSI reporting operations.
Implementing rules for starting and ending CPU occupation for event-driven CSI reports, where the configuration includes a first number of symbols for CSI measurement operations, initiating CPU occupation at the earliest measurement resource, and completing it before the final symbol of the uplink resource associated with the CSI transmission.
This approach reduces overhead and allows for more CSI reporting operations within the same time period by optimizing CPU utilization for event-driven CSI reports.
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Figure CN2024086224_09102025_PF_FP_ABST
Abstract
Description
CSI PROCESSING UNIT SYMBOL OCCUPATION FOR EVENT-DRIVEN CSI REPORTTECHNICAL FIELD
[0001] The present disclosure relates generally to communication systems, and more particularly, to channel state information (CSI) measurement and reporting for wireless communication.
[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 be a wireless device or user equipment (UE) configured to obtain a configuration of one or more events triggering a skip of an associated transmission of CSI to a network, where the configuration comprises a first number of symbols associated with CSI processing unit (CPU) occupation, initiate a CPU occupation associated with a CSI measurement operation at a first symbol of an earliest measurement resource associated with the CSI measurement operation, and complete, based on the first number of symbols, the CPU occupation before a final symbol of an uplink resource associated with the associated transmission of the CSI.
[0008] 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
[0009] FIG. 1 is a diagram illustrating an example of a wireless communications system and an access network.
[0010] FIG. 2A is a diagram illustrating an example of a first frame, in accordance with various aspects of the present disclosure.
[0011] FIG. 2B is a diagram illustrating an example of downlink (DL) channels within a subframe, in accordance with various aspects of the present disclosure.
[0012] FIG. 2C is a diagram illustrating an example of a second frame, in accordance with various aspects of the present disclosure.
[0013] FIG. 2D is a diagram illustrating an example of uplink (UL) channels within a subframe, in accordance with various aspects of the present disclosure.
[0014] FIG. 3 is a diagram illustrating an example of a base station and UE in an access network.
[0015] FIG. 4 is a diagram illustrating resources associated with a CSI report in accordance with some aspects of the disclosure.
[0016] FIG. 5 is a diagram illustrating two different CPU occupations for event-driven CSI reports in accordance with some aspects of the disclosure.
[0017] FIG. 6 is a call flow diagram illustrating a method of wireless communication in accordance with some aspects of the disclosure.
[0018] FIG. 7 is a flowchart of a method of wireless communication.
[0019] FIG. 8 is a flowchart of a method of wireless communication.
[0020] FIG. 9 is a diagram illustrating an example of a hardware implementation for an example apparatus and / or network entity.DETAILED DESCRIPTION
[0021] In some aspects of wireless communication, a UE may perform beam management operations including beam measurement and reporting to maintain a quality of wireless communication. Beam reporting optimization, in some aspects, may be associated with a UE-initiated and / or event-driven reporting mechanism that may provide timely beam reports to a network device (e.g., a base station) with reduced reporting overhead. In some aspects, enhancements to facilitate UE-initiated and / or event-driven beam management for reducing overhead and / or latency may relate to one or more of (1) UL signaling content (s) (and procedure (s) ) for UE-initiated / event-driven beam reporting facilitating fast beam switching and / or (2) UL signaling medium and / or container considering the UE-initiated / event-driven nature of the UL transmission, designed primarily for the purpose of beam reporting.
[0022] The beam management operations, in some aspects, may be associated with CSI processing units (CPUs) that may be occupied in association with one or more CSI measurement and / or reporting operations. In some aspects, a UE indicates a number of supported simultaneous CSI calculations NCPU (e.g., for a component carrier via parameter simultaneousCSIReportsPerCC and / or across all component carriers via parameter simultaneousCSI-ReportsAllCC) . For some CSI reports, the CPU (s) may be occupied for a configured number of OFDM symbols. The occupation, in some aspects, may begin at a measurement resource and end at a last symbol of a configured resource carrying the associated report. For example, the configured number of symbols may, e.g., for a periodic or semi-persistent CSI report (with CSI-ReportConfig with higher layer parameter reportQuantity not set to 'none' ) , be from the first symbol of the earliest one of each of a CSI reference signal (CSI-RS) resource, a CSI interference measurement (CSI-IM) resource, and / or synchronization signal block (SSB) resource, or each CSI-RS / CSI-IM resource associated with all configured sub-configurations for periodic CSI report (e.g., corresponding to a CSI-ReportConfig that contains a list of sub-configurations provided by csi-ReportSubConfigList) , or each CSI-RS / CSI-IM resource associated with all triggered sub-configurations for semi-persistent CSI report (e.g., corresponding to a CSIReportConfig that contains a list of sub-configurations provided by csi-ReportSubConfigList) , for channel or interference measurement, respective latest CSI-RS / CSI-IM / SSB occasion no later than the corresponding CSI reference resource. In some aspects, the CPU occupation may last until the last symbol of the configured physical uplink shared channel (PUSCH) and / or physical uplink control channel (PUCCH) carrying the associated report. The CPU occupation for an aperiodic CSI report, in some aspects, occupies CPU (s) from the first symbol after the physical downlink control channel (PDCCH) triggering the CSI report until the last symbol of the scheduled PUSCH carrying the report. When the PDCCH reception includes two PDCCH candidates from two respective search space sets, for the purpose of determining the CPU occupation duration, the PDCCH candidate that ends later in time is used. A semi-persistent CSI report on PUSCH configured with a particular higher-layer parameter (e.g., a codebookType set to 'typeIIDoppler-r18'or 'typeII-Doppler-PortSelection-r18') , in some aspects, occupies CPU (s) from the first symbol of a KP-th latest consecutive periodic and / or semi-persistent CSI-RS occasions no later than a CSI reference resource, until the last symbol of the PUSCH carrying the report, where the value of KP∈ {1, 2, 4} may be indicated by, or as, a UE capability indication.
[0023] However, in the presence of event-driven CSI reports for which a report may be skipped (or opportunistically triggered) based on an event condition and / or trigger not being met (or being met) , the CPU occupation lasting until a last symbol of a configured resource carrying the associated report may be wasteful. For example, once an event condition and / or trigger for skipping a report (or once an event condition and / or trigger for transmitting a report has not been met) , additional CPU occupation may be wasteful and may preclude beginning additional CSI operations.
[0024] Various aspects relate generally to rules for CPU occupation for event-driven CSI reports. Some aspects more specifically relate to rules for start and end symbols for CPU occupation for event-driven CSI reports. In some examples, a wireless device may be configured to obtain a configuration of one or more events triggering a skip of an associated transmission of CSI to a network, where the configuration comprises a first number of symbols associated with CSI processing unit (CPU) occupation, initiate a CPU occupation associated with a CSI measurement operation at a first symbol of an earliest measurement resource associated with the CSI measurement operation, and complete, based on the first number of symbols, the CPU occupation before a final symbol of an uplink resource associated with the associated transmission of the CSI.
[0025] 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 introducing rules for starting and ending CPU occupation for event-driven CSI reporting, the described techniques can be used to reduce overhead associated with CSI and allow for more CSI reporting operations over a same time period.
[0026] 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.
[0027] 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.
[0028] 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.
[0029] 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.
[0030] 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.
[0031] 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.
[0032] 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) .
[0033] 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.
[0034] 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.
[0035] 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.
[0036] 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.
[0037] 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.
[0038] 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.
[0039] 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.
[0040] 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.
[0041] 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) .
[0042] 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) .
[0043] 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.
[0044] 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.
[0045] 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.
[0046] 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.
[0047] 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.
[0048] 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.
[0049] 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) .
[0050] 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.
[0051] 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.
[0052] Referring again to FIG. 1, in certain aspects, the UE 104 may have an event-driven CSI report CPU occupation component 198 that may be configured to obtain a configuration of one or more events triggering a skip of an associated transmission of CSI to a network, where the configuration comprises a first number of symbols associated with CPU occupation, initiate a CPU occupation associated with a CSI measurement operation at a first symbol of an earliest measurement resource associated with the CSI measurement operation, and complete, based on the first number of symbols, the CPU occupation before a final symbol of an uplink resource associated with the associated transmission of the CSI. Although the following description may be focused on 5G NR, the concepts described herein may be applicable to other similar areas, such as LTE, LTE-A, CDMA, GSM, and other wireless technologies.
[0053] 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.
[0054] 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.
[0055] Table 1: Numerology, SCS, and CP
[0056] 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) .
[0057] 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.
[0058] 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) .
[0059] 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.
[0060] 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.
[0061] 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.
[0062] 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.
[0063] 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.
[0064] 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.
[0065] 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.
[0066] 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.
[0067] 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 antennas 352 via separate transmitters 354Tx. Each transmitter 354Tx may modulate an RF carrier with a respective spatial stream for transmission.
[0068] 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.
[0069] 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.
[0070] 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 event-driven CSI report CPU occupation component 198 of FIG. 1.
[0071] In some aspects of wireless communication, a UE may perform beam management operations including beam measurement and reporting to maintain a quality of wireless communication. Beam reporting optimization, in some aspects, may be associated with a UE-initiated and / or event-driven reporting mechanism that may provide timely beam reports to a network device (e.g., a base station) with reduced reporting overhead. In some aspects, enhancements to facilitate UE-initiated and / or event-driven beam management for reducing overhead and / or latency may relate to one or more of (1) UL signaling content (s) (and procedure (s) ) for UE-initiated / event- driven beam reporting facilitating fast beam switching and / or (2) UL signaling medium and / or container considering the UE-initiated / event-driven nature of the UL transmission, designed primarily for the purpose of beam reporting.
[0072] The beam management operations, in some aspects, may be associated with CPUs that may be occupied in association with one or more CSI measurement and / or reporting operations. In some aspects, a UE indicates a number of supported simultaneous CSI calculations NCPU (e.g., for a component carrier via parameter simultaneousCSIReportsPerCC and / or across all component carriers via parameter simultaneousCSI-ReportsAllCC) . For some CSI reports, the CPU (s) may be occupied for a configured number of OFDM symbols. The occupation, in some aspects, may begin at a measurement resource and end at a last symbol of a configured resource carrying the associated report. For example, the configured number of symbols may, e.g., for a periodic or semi-persistent CSI report (with CSI-ReportConfig with higher layer parameter reportQuantity not set to 'none') , be from the first symbol of the earliest one of each of a CSI-RS resource, a CSI-IM resource, and / or SSB resource, or each CSI-RS / CSI-IM resource associated with all configured sub-configurations for periodic CSI report (e.g., corresponding to a CSI-ReportConfig that contains a list of sub-configurations provided by csi-ReportSubConfigList) , or each CSI-RS / CSI-IM resource associated with all triggered sub-configurations for semi-persistent CSI report (e.g., corresponding to a CSIReportConfig that contains a list of sub-configurations provided by csi-ReportSubConfigList) , for channel or interference measurement, respective latest CSI-RS / CSI-IM / SSB occasion no later than the corresponding CSI reference resource. In some aspects, the CPU occupation may last until the last symbol of the configured PUSCH and / or PUCCH carrying the associated report. The CPU occupation for an aperiodic CSI report, in some aspects, occupies CPU(s) from the first symbol after the PDCCH triggering the CSI report until the last symbol of the scheduled PUSCH carrying the report. When the PDCCH reception includes two PDCCH candidates from two respective search space sets, for the purpose of determining the CPU occupation duration, the PDCCH candidate that ends later in time is used. A semi-persistent CSI report on PUSCH configured with a particular higher-layer parameter (e.g., a codebookType set to 'typeIIDoppler-r18'or 'typeII-Doppler-PortSelection-r18') , in some aspects, occupies CPU (s) from the first symbol of a KP-th latest consecutive periodic and / or semi-persistent CSI-RS occasions no later than a CSI reference resource, until the last symbol of the PUSCH carrying the report, where the value of KP∈ {1, 2, 4} may be indicated by, or as, a UE capability indication.
[0073] However, in the presence of event-driven CSI reports for which a report may be skipped (or opportunistically triggered) based on an event condition and / or trigger not being met (or being met) , the CPU occupation lasting until a last symbol of a configured resource carrying the associated report may be wasteful. For example, once an event condition and / or trigger for skipping a report (or once an event condition and / or trigger for transmitting a report has not been met) , additional CPU occupation may be wasteful and may preclude beginning additional CSI operations.
[0074] Various aspects relate generally to rules for CPU occupation for event-driven CSI reports. Some aspects more specifically relate to rules for start and end symbols for CPU occupation for event-driven CSI reports. In some examples, a wireless device may be configured to obtain a configuration of one or more events triggering a skip of an associated transmission of CSI to a network, where the configuration comprises a first number of symbols associated with CSI processing unit (CPU) occupation, initiate a CPU occupation associated with a CSI measurement operation at a first symbol of an earliest measurement resource associated with the CSI measurement operation, and complete, based on the first number of symbols, the CPU occupation before a final symbol of an uplink resource associated with the associated transmission of the CSI.
[0075] FIG. 4 is a diagram 400 illustrating resources associated with a CSI report in accordance with some aspects of the disclosure. Diagram 400 illustrates a set of CSI measurement resources 410. The set of CSI measurement resources 410, in some aspects, may include resources that may be used to transmit and / or receive signals that may be measured in association with a CSI report (e.g., a configured periodic, aperiodic, semi-persistent, or event-driven CSI report) . For example, the set of CSI measurement resources 410 may include one or more resources (e.g., CSI measurement resource 412, CSI measurement resource 414, CSI measurement resource 416, and / or CSI measurement resource 418) that may be used to transmit one of a CSI-RS, a CSI-IM, or an SSB occasion. Diagram 400 further illustrates a CSI report resource 430 that a UE may use to transmit, and a network device may monitor to receive, a CSI report. Diagram 400 illustrates that, in some aspects, a number of measurement resources preceding the CSI report resource 430 (K= {1, …, N} ) may be specified as being associated with the CSI report resource 430 and the CPU occupation may begin at the Kth latest consecutive CSI measurement resource (e.g., periodic and / or semi-persistent CSI-RS occasions) no later than a CSI reference resource and last until a last symbol of the CSI report resource 430. In some aspects, the CSI reference resource may be a resource defined in both a frequency and time domain. The time domain resource, in some aspects, the CSI reference resource may be a single downlink slot ‘n’ which is earlier than the uplink slot ‘n′’ for transmitting an associated CSI report by an offset.
[0076] FIG. 5 is a diagram 500 illustrating two different CPU occupations for event-driven CSI reports in accordance with some aspects of the disclosure. For example, for event-driven CSI reports two different CPU occupation durations in units of OFDM symbols may be defined –a first CPU occupation duration associated with skipping and / or omitting a CSI report (e.g., a measurement-only case, occasion, or event) and a second CPU occupation duration associated with transmitting a CSI report (e.g., a measurement and reporting case, occasion, or event) . The CPU occupation start and end symbols (e.g., CPU occupation initiation and CPU occupation completion) may be defined in one of a plurality of ways.
[0077] In some aspects, the start symbol of CPU occupation (e.g., a CPU occupation initiation) may be defined as the first symbol of the earliest one of each CSI-RS / CSI-IM / SSB resource (for channel or interference measurement, if configured) including sub-configurations (e.g., provided via csi-ReportSubConfigList) , no later than the corresponding CSI reference resource. The start symbol of CPU occupation, in some aspects, may be defined as the first symbol of the respective Kth latest consecutive occasions of a periodic or semi-persistent or aperiodic CSI-RS and / or CSI-IM and / or SSB (for channel or interference measurement, if configured) , no later than the corresponding CSI reference resource. The value K may be independently set for the measurement and / or the measurement and reporting. In some aspects, the value of K may be a known or configured value (e.g., K=1, 2, …) or may be determined based on a UE capability and may be communicated to a network via an RRC capability message. The value of K based on the UE capability may be directly used for the occupation duration computation or the network may transmit a signal instructing and / or configuring a UE to use a particular value supported by the UE capability.
[0078] Diagram 500 illustrates a CPU occupation associated with an event-driven CSI reporting that is initiated at a first symbol of CSI measurement resource 512 and continues through at least a CSI report triggering event detection occasion 520. The timing of the CSI report triggering event detection occasion 520, in some aspects, may be known and / or configured for one or more types of events. For example, the events may include one or more events associated with a serving cell becoming better than a threshold, a serving cell becoming worse than a threshold, a neighboring (or neighbor) cell becoming better than a special cell (SpCell) by an offset threshold, a neighboring cell becoming better than a threshold, an SpCell becoming worse than a first threshold and a neighboring cell becoming better than a second threshold, a neighboring cell becoming better than a secondary cell (SCell) by an offset threshold, inter-RAT neighbor becoming better than a threshold, a primary cell (PCell) becoming worse than a first threshold and an inter-RAT neighbor becoming better than a second threshold, interference becoming higher than a threshold. In some aspects, the events may be one or more of a current beam (s) becoming worse than a threshold, a new beam (s) becoming better than the current beam (s) by an offset threshold, a new beam (s) becoming better than a threshold, a current beam (s) becoming worse than a first threshold and a new beam (s) becoming better than a second threshold, an order of current beam qualities has been changed since a last report (when multiple beams are measured) , observing poor decoding quality (e.g., persistent decoding failure) with a current beam (s) . A single CSI report triggering event detection occasion 520 may be associated with multiple events, e.g., multiple conditions associated with multiple triggering events may be evaluated at the single CSI report triggering event detection occasion 520. In some aspects, additional (e.g., periodic, aperiodic, or semi-persistent) event detection occasions (e.g., similar to the CSI report triggering event detection occasion 520) may be configured between the CSI measurement resource 512 and a CSI measurement resource 516 to reduce a latency for CSI reporting.
[0079] The end symbol of the CPU occupation (aCPU occupation completion) may depend on the results of the CSI report triggering event detection occasion 520. For example, if the CSI report triggering event detection occasion 520 detects that at least one set of conditions (e.g., one or more thresholds, a hysteresis condition, or a time to trigger condition) for at least one triggering event have been met (e.g., detects a triggering event) , the CPU end symbol may be defined as the last symbol of the CSI report resource 530 (e.g., a PUSCH or PUCCH carrying the event-driven CSI report) . Accordingly, the CPU occupation duration may be the measurement and report CPU occupation 540. In some aspects, detecting the triggering event may trigger the transmission of a CSI report indication 550 to a network device (e.g., via a PUCCH uplink signal from the UE to a serving base station and / or cell) to inform the network device of an activation of the CSI report resource 530 associated with the CSI report triggering event detection occasion 520 and / or the CSI measurement resources. The CSI report indication 550 may be defined as a kind of scheduling request (SR) resource (e.g., a dedicated resource for UL scheduling request to send the event-driven CSI report) , a new UCI type over PUCCH, UCI or MAC-CE over PUSCH, and / or a PRACH.
[0080] If the CSI report triggering event detection occasion 520 fails to detect that at least one set of conditions (e.g., one or more thresholds, a hysteresis condition, or a time to trigger condition) for at least one triggering event have been met (e.g., does not detect a triggering event) , or detects a trigger (or triggering event) for skipping and / or omitting a CSI report, the CPU end symbol may be defined based on one of (1) the CSI report resource 530 (e.g., as an example of a PUSCH and / or PUCCH resource (s) configured to carry the associated CSI report) , (2) the CSI report indication 550 (e.g., as an example of the PUSCH and / or PUCCH resource (s) associated with CSI report request) , or (3) the CSI measurement resource 516 (e.g., as an example of a last CSI-RS resource, CSI-IM resource, and / or SSB resource and / or occasion from a corresponding CSI reference resource) . The CSI report indication 550 may be transmitted to indicate to the network that the 530 / / will not be used to transmit CSI (e.g., a CSI report) to avoid blind decoding or to allow for reallocation.
[0081] In some aspects, the CPU occupation may be configured to complete, conclude, end, or terminate, a first number of symbols (e.g., X1 symbols 561) before the last symbol of the CSI report resource 530. In some aspects, a common configuration (e.g., a known or pre-configured common configuration) may specify and / or define a CPU occupation completion or end for a measurement-only event and a measurement and report event (e.g., whether a CSI report triggering event / CSI report skipping event is detected or not) such that the CPU occupation completes at a configured number of symbols before the last symbol of the CSI report resource 530, where the configured number (X) may be 0 in the event that a CSI report is transmitted (e.g., if a CSI report triggering event is detected) , and where the configured number may be greater than 0 when a CSI report is omitted and / or skipped (e.g., if a CSI report triggering event is not detected or a CSI report skipping event is detected) .
[0082] The CPU occupation may be configured to complete, conclude, end, or terminate, a second number of symbols (e.g., X2 symbols 562) before or after the CSI report indication 550. For example, a positive value of X2 may indicate a CPU occupation conclusion before the CSI report indication 550 and a negative value of X2 may indicate a CPU occupation conclusion after the CSI report indication 550, or vice versa. In some aspects, the CPU occupation may be configured to complete, conclude, end, or terminate a third number of symbols (e.g., X3 symbols 563) after the CSI measurement resource 516 (e.g., a final measurement resource associated with detecting an associated triggering event) . In some aspects, the CPU occupation may be configured to complete, conclude, end, or terminate a fourth number of symbols (e.g., X4 symbols 564) after an acknowledgment of the CSI report indication acknowledgment 560 is received from the network. Diagram 500 illustrates a measurement-only CPU occupation 510 along with the associated values of X1, X2, and X3 that may be used to define, specify, and / or indicate the measurement-only CPU occupation end 513. In some aspects, the number of symbols may be based on one of (1) a known or pre-configured set of values (e.g., one or more values specified in a standard) , (2) the UE capability (e.g., the UE’s capability to generate a CSI report, where each of the associated values of X1, X2, and X3 may depend on the number of symbols the UE uses to generate the report that may not be used if no CSI report is transmitted) , or (3) an indication received from the network (e.g., the network device or base station) .
[0083] FIG. 6 is a call flow diagram 600 illustrating a method of wireless communication in accordance with some aspects of the disclosure. The method is illustrated in relation to a base station 602 (e.g., as an example of a network device or network node that may include one or more components of a disaggregated base station) in communication with a UE 604 (e.g., as an example of a wireless device) . The functions ascribed to the base station 602, in some aspects, may be performed by one or more components of a network entity, a network node, or a network device (asingle network entity / node / device or a disaggregated network entity / node / device as described above in relation to FIG. 1) . Similarly, the functions ascribed to the UE 604, in some aspects, may be performed by one or more components of a wireless device supporting communication with a network entity / node / device. Accordingly, references to “transmitting” in the description below may be understood to refer to a first component of the base station 602 (or the UE 604) outputting (or providing) an indication of the content of the transmission to be transmitted by a different component of the base station 602 (or the UE 604) . Similarly, references to “receiving” in the description below may be understood to refer to a first component of the base station 602 (or the UE 604) receiving a transmitted signal and outputting (or providing) the received signal (or information based on the received signal) to a different component of the base station 602 (or the UE 604) .
[0084] The UE 604 may transmit, and the base station 602 may receive, a UE capability indication 605. The UE capability indication 605, in some aspects, may indicate a maximum number of CPUs (e.g., NCPU) available at the UE 604. At 606, the UE 604 may obtain a configuration of one or more events triggering a skip of an associated transmission of CSI to a network. In some aspects, the configuration may additionally, or alternatively, include a configuration of one or more events triggering a transmission of CSI (e.g., via a CSI report) to a network, where failing to meet associated conditions may cause the UE 604 to omit the CSI report. The configuration, in some aspects, may include a first number of symbols associated with CPU occupation. In some aspects, the configuration may include a plurality of candidate numbers of symbols including the first number of symbols. In some aspects, obtaining the configuration of the one or more events, may include receiving an event trigger configuration 608 transmitted by the base station 602.
[0085] In some aspects, the events may include one or more events associated with a serving cell becoming better than a threshold, a serving cell becoming worse than a threshold, a neighboring (or neighbor) cell becoming better than a special cell (SpCell) by an offset threshold, a neighboring cell becoming better than a threshold, an SpCell becoming worse than a first threshold and a neighboring cell becoming better than a second threshold, a neighboring cell becoming better than a secondary cell (SCell) by an offset threshold, inter-RAT neighbor becoming better than a threshold, a primary cell (PCell) becoming worse than a first threshold and an inter-RAT neighbor becoming better than a second threshold, interference becoming higher than a threshold. The configuration, in some aspects, may include a timing of CPU occupation initiation, one or more sets of conditions for the transmission of CSI, and a timing of a CPU occupation conclusion.
[0086] In some aspects, the configuration of the timing of the CPU occupation initiation may indicate or specify CPU occupation initiation at a first symbol of the earliest one of a set of CSI measurement resources 614 (e.g., each CSI-RS / CSI-IM / SSB resource for channel or interference measurement, if configured) including sub-configurations (e.g., provided via csi-ReportSubConfigList) , no later than the corresponding CSI reference resource. The configuration of the timing of the CPU occupation initiation, in some aspects, may indicate or specify CPU occupation initiation at the first symbol of the respective Kth latest consecutive occasions of a periodic or semi-persistent or aperiodic CSI-RS and / or CSI-IM and / or SSB (for channel or interference measurement, if configured) , no later than the corresponding CSI reference resource. The value K may be independently set for the measurement and / or the measurement and reporting. In some aspects, the value of K may be a known or configured value (e.g., K=1, 2, …) or may be determined based on a UE capability and may be communicated to a network via an RRC capability message. The value of K based on the UE capability (e.g., based on the UE capability indication 605) may be directly used for the occupation duration computation or the network may transmit a signal (e.g., event trigger configuration 608) instructing and / or configuring a UE to use a particular value supported by the UE capability.
[0087] In some aspects, the configuration of the timing of the CPU occupation completion may include a first configuration associated with a CSI report transmission (e.g., detecting a CSI report triggering event) and a second configuration associated with a CSI report omission (e.g., a failure to detect a CSI report triggering event or detecting a CSI report skipping and / or omitting event) . For example, the first configuration may include the configuration of the timing of the CPU occupation conclusion indicating or specifying a CPU occupation completion at a last symbol of an associated CSI report resource (e.g., a PUSCH or PUCCH carrying the event-driven CSI report, such as CSI report resource 530 of FIG. 5) . The second configuration may include the configuration of the timing of the CPU occupation conclusion indicating or specifying CPU occupation conclusion based on one of (1) a PUSCH and / or PUCCH resource (s) configured to carry the associated CSI report (e.g., CSI report resource 530 of FIG. 5) , (2) a PUSCH and / or PUCCH resource (s) associated with a CSI report request (e.g., CSI report indication 550 of FIG. 5) , or (3) a last CSI-RS resource, CSI-IM resource, and / or SSB resource and / or occasion from a corresponding CSI reference resource (e.g., CSI measurement resource 516 of FIG. 5) .
[0088] For example, in some aspects, the configuration obtained at 606 may indicate for the CPU occupation to complete, conclude, end, or terminate, a first number of symbols (e.g., X1 symbols 561) before the last symbol of an associated CSI report resource. In some aspects, a common configuration may specify and / or define a CPU occupation conclusion or end for a measurement-only event and a measurement and report event (e.g., whether a CSI report triggering event / CSI report skipping event is detected or not) such that the CPU occupation completes at a configured number of symbols before the last symbol of the associated CSI report resource, where the configured number (X) may be 0 in the event that a CSI report is transmitted (e.g., if a CSI report triggering event is detected) , and where the configured number may be greater than 0 when a CSI report is omitted and / or skipped (e.g., if a CSI report triggering event is not detected or a CSI report skipping event is detected) .
[0089] The configuration obtained at 606 may indicate for the CPU occupation to complete, conclude, end, or terminate, a second number of symbols (e.g., X2 symbols 562) before or after the CSI report indication (e.g., the SR resource for the UL scheduling request to send the event-driven CSI report, a new UCI type over PUCCH, UCI or MAC-CE over PUSCH, and / or a PRACH) . For example, a positive value of X2 may indicate a CPU occupation conclusion before the CSI report indication and a negative value of X2 may indicate a CPU occupation conclusion after the CSI report indication, or vice versa. In some aspects, the configuration obtained at 606 may indicate for the CPU occupation to complete, conclude, end, or terminate a third number of symbols (e.g., X3 symbols 563) after the last symbol of the last CSI-RS / CSI-IM / SSB occasion from the corresponding CSI reference resource (e.g., a final measurement resource associated with detecting an associated triggering event) . In some aspects, the number of symbols indicated in the configuration obtained at 606 may be based on one of (1) a known or pre-configured set of values (e.g., one or more values specified in a standard) , (2) the UE capability, or (3) an indication received from the network (e.g., the network device or base station) .
[0090] Based on the configuration obtained at 606, the UE 604 may, at 610, initiate, or start, a CPU occupation at time 611 (e.g., a first symbol of a first CSI-RS / CSI-IM / SSB 614A in a set of CSI measurement resources 614) . At 612, the UE 604 may measure CSI signals in the set of CSI measurement resources 614 (e.g., CSI-RS / CSI-IM / SSB 614A, CSI-RS / CSI-IM / SSB 614B, through CSI-RS / CSI-IM / SSB 614K transmitted by the base station 602) . Based on the measurements made at 612, the UE 604 may determine at 616 to omit a CSI report (in other aspects, the UE 604 may determine to transmit a CSI report and complete the CPU occupation at the last symbol of the CSI report) . The determination at 616, in some aspects, may be based on failing to meet any conditions triggering a CSI report. In some aspects, the determination at 616 may be based on meeting conditions triggering the omission or skipping of a CSI report transmission. In some aspects, the determination at 616 may be associated with a CSI report triggering event detection occasion (e.g., CSI report triggering event detection occasion 520 of FIG. 5) associated with detecting one or more triggering events.
[0091] Based on determining at 616 to omit, or skip, the CSI report transmission (and an associated CSI report generation) , the UE 604 may transmit, and the base station 602 may receive, a CSI report omission indication 617 (e.g., the CSI report indication 550) . In some aspects, the CSI report omission indication 617 may allow the base station to avoid a blind decoding of the resources associated with the omitted CSI report or to reallocate the resources. Based on determining at 616 to omit, or skip, the CSI report transmission (and an associated CSI report generation) , the UE 604 may, at 618 complete, or end, a CPU occupation at time 619 (e.g., at a last symbol of a CPU occupation duration 630) . In some aspects, when the UE 604 determines at 616 to omit, or skip the CSI report transmission, the UE 604 may, based on the configuration obtained at 606, complete the CPU occupation, at a symbol that is a first number of symbols (e.g., X1 symbols 561) before a last symbol of an associated CSI report resource (e.g., a PUSCH or PUCCH carrying the event-driven CSI report, such as CSI report resource 530 of FIG. 5) .
[0092] The UE 604 may, based on the configuration obtained at 606, complete the CPU occupation at a symbol that is a second number of symbols (e.g., X2 symbols 562) before or after a PUSCH and / or PUCCH resource (s) associated with a CSI report request (e.g., CSI report indication 550 of FIG. 5) . For example, a positive value of X2 may indicate a CPU occupation conclusion before the PUCCH resource (s) associated with the CSI report request and a negative value of X2 may indicate a CPU occupation conclusion after the PUCCH resource (s) associated with the CSI report request, or vice versa. In some aspects, the UE 604 may, based on the configuration obtained at 606, complete the CPU occupation at a symbol that is a third number of symbols (e.g., X3 symbols 563) after the last CSI-RS resource, CSI-IM resource, and / or SSB resource and / or occasion (e.g., CSI-RS / CSI-IM / SSB 614K) from a corresponding CSI reference resource (e.g., CSI measurement resource 516 of FIG. 5) . In some aspects, the number of symbols may be based on one of (1) a known or pre-configured set of values (e.g., one or more values specified in a standard) obtained at 606, (2) the UE capability indicated in UE capability indication 605, or (3) an indication received from the network (e.g., the network device or base station) at 606 via the event trigger configuration 608. Based on determining at 616 to omit, or skip, the CSI report transmission (and an associated CSI report generation) , the UE 604 may, at 620 omit, or skip, the CSI report associated with the CPU occupation and / or the CSI signal measurement at 612.
[0093] FIG. 7 is a flowchart 700 of a method of wireless communication. The method may be performed by a wireless device such as a UE (e.g., the UE 104, 604; the apparatus 904) . In some aspects, the UE may transmit an indication of a capability of the UE. In some aspects, indication may be of a maximum number of CPUs (e.g., NCPU) available at the UE (e.g., a number of CPUs that may be simultaneously occupied) . For example, referring to FIG. 6, the UE 604 may transmit UE capability indication 605.
[0094] At 702, the UE may obtain a configuration of one or more events triggering a skip of an associated transmission of CSI to a network. Meeting one or more sets of conditions associated with the one or more events, in some aspects, may cause the UE to omit the CSI report. In some aspects, the configuration may additionally, or alternatively, include a configuration of one or more events triggering a transmission of CSI (e.g., via a CSI report) to a network, where failing to meet sets of conditions associated with the one or more events may cause the UE to omit the CSI report. Obtaining the configuration at 702, in some aspects, may include receiving the configuration from the network. For example, 702 may be performed by application processor (s) 906, cellular baseband processor (s) 924, transceiver (s) 922, antenna (s) 980, and / or event-driven CSI report CPU occupation component 198 of FIG. 9. The configuration, in some aspects, may include (or indicate) a first number of symbols associated with CPU occupation. In some aspects, the configuration may include a plurality of candidate numbers of symbols including the first number of symbols. The first number of symbols, in some aspects, may be based on at least one of a known value or a UE capability (e.g., the indication of the UE capability transmitted by the UE) . For example, referring to FIG. 6, the UE 604 may, at 606, obtain a configuration of one or more events triggering a skip of an associated transmission of CSI to a network, e.g., via a known configuration or via an event trigger configuration 608 received from the base station 602.
[0095] At 704, the UE may initiate or start a CPU occupation associated with a CSI measurement operation at a first symbol of an earliest measurement resource associated with the CSI measurement operation. For example, 704 may be performed by application processor (s) 906, cellular baseband processor (s) 924, transceiver (s) 922, antenna (s) 980, and / or event-driven CSI report CPU occupation component 198 of FIG. 9. The earliest measurement resource, in some aspects, may be associated with one of a CSI-RS, a CSI-IM, or an SSB. In some aspects the earliest measurement resource may be based on a time period from the start of the CPU occupation at 704 to the end of the CPU occupation that includes a second number of consecutive occasions of one or more of a periodic measurement resource, a semi-persistent measurement resource, or an aperiodic measurement resource associated with the CSI measurement operation. The configuration received at 702, in some aspects, may further include the second number of consecutive occasions. For example, in some aspects, the earliest measurement resource associated with the CSI measurement operation at the first symbol of the respective Kth latest consecutive occasions of a periodic or semi-persistent or aperiodic CSI-RS and / or CSI-IM and / or SSB (for channel or interference measurement, if configured) , no later than the corresponding CSI reference resource. In some aspects, the value of K may be a known or configured value (e.g., K=1, 2, …) or may be determined based on a UE capability and may be communicated to a network via an RRC capability message. The value of K based on the UE capability transmitted by the UE may be directly used for the occupation duration computation or the network may transmit a signal instructing and / or configuring a UE to use a particular value supported by the UE capability. For example, referring to FIGs. 5 and 6, the UE 604 may, at 610, initiate a CPU occupation at time 611 (e.g., a first symbol of a first CSI-RS / CSI-IM / SSB 614A in a set of CSI measurement resources 614) based on the configuration obtained at 606 or at a beginning of the CSI measurement resource 512 associated with the measurement-only CPU occupation 510 and / or the measurement and report CPU occupation 540.
[0096] In some aspects, the UE may measure transmissions associated with the CSI measurement operation. In some aspects, the UE may measure a second number of transmissions based on the configuration obtained at 702. For example, referring to FIG. 6, the UE 604 may, at 612, may measure CSI signals in the set of CSI measurement resources 614 (e.g., CSI-RS / CSI-IM / SSB 614A-614K transmitted by the base station 602) .
[0097] The UE, in some aspects, may determine whether to omit a CSI report. In some aspects, the determination may be based on the measurements made by the UE and the sets of conditions associated with the one or more events. If the UE determines not to omit the CSI report the UE may transmit the CSI report and complete the CPU occupation at a final symbol of an uplink resource associated with the associated transmission of the CSI. Referring to FIGs. 5 and 6, for example, the UE 604 may, at 616 or at CSI report triggering event detection occasion 520, determine whether to omit a CSI report and complete a CPU occupation at the last symbol of the CSI report resource 530.
[0098] If the UE determines to omit the CSI report, at 710, the UE may end, based on the first number of symbols, the CPU occupation before a final symbol of an uplink resource associated with the associated transmission of the CSI. For example, 710 may be performed by application processor (s) 906, cellular baseband processor (s) 924, transceiver (s) 922, antenna (s) 980, and / or event-driven CSI report CPU occupation component 198 of FIG. 9. In some aspects, the CPU occupation may end at a symbol that precedes the final symbol of the uplink resource by the first number of symbols. The first number of symbols, in some aspects, may be greater than zero. In some aspects, the CPU occupation may end at a symbol that follows, by the first number of symbols, a last symbol of a last measurement resource of the CSI measurement operation. The CPU occupation, in some aspects, may end at a symbol that is one of: a first symbol that precedes, by the first number of symbols, a resource associated with an indication of the transmission of the CSI to the network and preceding the uplink resource; or a second symbol that follows, by the first number of symbols, the resource associated with the indication of the transmission of the CSI to the network. In some aspects, the resource associated with the indication of the transmission of the CSI to the network is one of a PUCCH resource, a PUSCH resource, or a PRACH resource. For example, referring to FIGs. 5 and 6, the UE 604 may, at 618, may complete a CPU occupation at time 619 (e.g., at a last symbol of a CPU occupation duration 630) or at the measurement-only CPU occupation end 513 based on the configuration obtained at 606.
[0099] In some aspects, the UE may output an indication of the end of the CPU occupation. In some aspects, outputting the indication may include one or more of transmitting or storing the indication of the end of the CPU occupation. Referring to FIGs. 5 and 6, for example, the UE 604 may transmit, and the base station 602 may receive, a CSI report omission indication 617 (e.g., the CSI report indication 550) . The UE, in some aspects, may skip based on the detection of the event of the one or more events, the associated transmission of CSI to the network. Referring to FIGs. 5 and 6, for example, the UE 604 may, at 620 omit, or skip, the CSI report (e.g., via CSI report resource 530) associated with the CPU occupation (e.g., the measurement-only CPU occupation 510) and / or the CSI signal measurement at 612.
[0100] FIG. 8 is a flowchart 800 of a method of wireless communication. The method may be performed by a wireless device such as a UE (e.g., the UE 104, 604; the apparatus 904) . At 801, the UE may transmit an indication of a capability of the UE. For example, 801 may be performed by application processor (s) 906, cellular baseband processor (s) 924, transceiver (s) 922, antenna (s) 980, and / or event-driven CSI report CPU occupation component 198 of FIG. 9. In some aspects, indication may be of a maximum number of CPUs (e.g., NCPU) available at the UE (e.g., a number of CPUs that may be simultaneously occupied) . For example, referring to FIG. 6, the UE 604 may transmit UE capability indication 605.
[0101] At 802, the UE may obtain a configuration of one or more events triggering a skip of an associated transmission of CSI to a network. Meeting one or more sets of conditions associated with the one or more events, in some aspects, may cause the UE to omit the CSI report. In some aspects, the configuration may additionally, or alternatively, include a configuration of one or more events triggering a transmission of CSI (e.g., via a CSI report) to a network, where failing to meet sets of conditions associated with the one or more events may cause the UE to omit the CSI report. Obtaining the configuration at 802, in some aspects, may include receiving, at 803, the configuration from the network. For example, 802 and 803 may be performed by application processor (s) 906, cellular baseband processor (s) 924, transceiver (s) 922, antenna (s) 980, and / or event-driven CSI report CPU occupation component 198 of FIG. 9. The configuration, in some aspects, may include (or indicate) a first number of symbols associated with CPU occupation. In some aspects, the configuration may include a plurality of candidate numbers of symbols including the first number of symbols. The first number of symbols, in some aspects, may be based on at least one of a known value or a UE capability (e.g., the indication of the UE capability transmitted at 801) . For example, referring to FIG. 6, the UE 604 may, at 606, obtain a configuration of one or more events triggering a skip of an associated transmission of CSI to a network, e.g., via a known configuration or via an event trigger configuration 608 received from the base station 602.
[0102] At 804, the UE may start a CPU occupation associated with a CSI measurement operation at a first symbol of an earliest measurement resource associated with the CSI measurement operation. For example, 804 may be performed by application processor (s) 906, cellular baseband processor (s) 924, transceiver (s) 922, antenna (s) 980, and / or event-driven CSI report CPU occupation component 198 of FIG. 9. The earliest measurement resource, in some aspects, may be associated with one of a CSI-RS, a CSI-IM, or an SSB. In some aspects the earliest measurement resource may be based on a time period from the start of the CPU occupation at 804 to the end of the CPU occupation that includes a second number of consecutive occasions of one or more of a periodic measurement resource, a semi-persistent measurement resource, or an aperiodic measurement resource associated with the CSI measurement operation. The configuration received at 802, in some aspects, may further include the second number of consecutive occasions. For example, in some aspects, the earliest measurement resource associated with the CSI measurement operation at the first symbol of the respective Kth latest consecutive occasions of a periodic or semi-persistent or aperiodic CSI-RS and / or CSI-IM and / or SSB (for channel or interference measurement, if configured) , no later than the corresponding CSI reference resource. In some aspects, the value of K may be a known or configured value (e.g., K= 1, 2, …) or may be determined based on a UE capability and may be communicated to a network via an RRC capability message. The value of K based on the UE capability transmitted at 801 may be directly used for the occupation duration computation or the network may transmit a signal instructing and / or configuring a UE to use a particular value supported by the UE capability. For example, referring to FIGs. 5 and 6, the UE 604 may, at 610, initiate a CPU occupation at time 611 (e.g., a first symbol of a first CSI-RS / CSI-IM / SSB 614A in a set of CSI measurement resources 614) based on the configuration obtained at 606 or at a beginning of the CSI measurement resource 512 associated with the measurement-only CPU occupation 510 and / or the measurement and report CPU occupation 540.
[0103] At 806, the UE may measure transmissions associated with the CSI measurement operation. In some aspects, the UE may measure a second number of transmissions based on the configuration obtained at 802. For example, 806 may be performed by application processor (s) 906, cellular baseband processor (s) 924, transceiver (s) 922, antenna (s) 980, and / or event-driven CSI report CPU occupation component 198 of FIG. 9. For example, referring to FIG. 6, the UE 604 may, at 612, may measure CSI signals in the set of CSI measurement resources 614 (e.g., CSI-RS / CSI-IM / SSB 614A-614K transmitted by the base station 602) .
[0104] At 807, the UE may determine whether to omit a CSI report. In some aspects, the determination at 807 may be based on the measurements made at 806 and the sets of conditions associated with the one or more events. If the UE determines not to omit the CSI report, at 808, the UE may transmit the CSI report and complete the CPU occupation at a final symbol of an uplink resource associated with the associated transmission of the CSI. For example, 807 and 808 may be performed by application processor (s) 906, cellular baseband processor (s) 924, transceiver (s) 922, antenna (s) 980, and / or event-driven CSI report CPU occupation component 198 of FIG. 9. Referring to FIGs. 5 and 6, for example, the UE 604 may, at 616 or at CSI report triggering event detection occasion 520, determine whether to omit a CSI report and complete a CPU occupation at the last symbol of the CSI report resource 530.
[0105] If the UE determines at 807 to omit the CSI report, at 810, the UE may end, based on the first number of symbols, the CPU occupation before a final symbol of an uplink resource associated with the associated transmission of the CSI. For example, 810 may be performed by application processor (s) 906, cellular baseband processor (s) 924, transceiver (s) 922, antenna (s) 980, and / or event-driven CSI report CPU occupation component 198 of FIG. 9. In some aspects, the CPU occupation may end at a symbol that precedes the final symbol of the uplink resource by the first number of symbols. The first number of symbols, in some aspects, may be greater than zero. In some aspects, the CPU occupation may end at a symbol that follows, by the first number of symbols, a last symbol of a last measurement resource of the CSI measurement operation. The CPU occupation, in some aspects, may end at a symbol that is one of: a first symbol that precedes, by the first number of symbols, a resource associated with an indication of the transmission of the CSI to the network and preceding the uplink resource; or a second symbol that follows, by the first number of symbols, the resource associated with the indication of the transmission of the CSI to the network. In some aspects, the resource associated with the indication of the transmission of the CSI to the network is one of a PUCCH resource, a PUSCH resource, or a PRACH resource. For example, referring to FIGs. 5 and 6, the UE 604 may, at 618, may complete a CPU occupation at time 619 (e.g., at a last symbol of a CPU occupation duration 630) or at the measurement-only CPU occupation end 513 based on the configuration obtained at 606.
[0106] At 812, the UE may output an indication of the end of the CPU occupation. In some aspects, outputting the indication at 812 may include one or more of transmitting or storing the indication of the end of the CPU occupation at 813. For example, 812 and 813 may be performed by application processor (s) 906, cellular baseband processor (s) 924, transceiver (s) 922, antenna (s) 980, and / or event-driven CSI report CPU occupation component 198 of FIG. 9. Referring to FIGs. 5 and 6, for example, the UE 604 may transmit, and the base station 602 may receive, a CSI report omission indication 617 (e.g., the CSI report indication 550) .
[0107] At 814, the UE may skip based on the detection (e.g., at 807) of the event of the one or more events, the associated transmission of CSI to the network. For example, 814 may be performed by application processor (s) 906, cellular baseband processor (s) 924, transceiver (s) 922, antenna (s) 980, and / or event-driven CSI report CPU occupation component 198 of FIG. 9. Referring to FIGs. 5 and 6, for example, the UE 604 may, at 620 omit, or skip, the CSI report (e.g., via CSI report resource 530) associated with the CPU occupation (e.g., the measurement-only CPU occupation 510) and / or the CSI signal measurement at 612.
[0108] FIG. 9 is a diagram 900 illustrating an example of a hardware implementation for an apparatus 904. The apparatus 904 may be a UE, a component of a UE, or may implement UE functionality. In some aspects, the apparatus 904 may include at least one cellular baseband processor 924 (also referred to as a modem) coupled to one or more transceivers 922 (e.g., cellular RF transceiver) . The cellular baseband processor (s) 924 may include at least one on-chip memory 924'. In some aspects, the apparatus 904 may further include one or more subscriber identity modules (SIM) cards 920 and at least one application processor 906 coupled to a secure digital (SD) card 908 and a screen 910. The application processor (s) 906 may include on-chip memory 906'. In some aspects, the apparatus 904 may further include a Bluetooth module 912, a WLAN module 914, an SPS module 916 (e.g., GNSS module) , one or more sensor modules 918 (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 926, a power supply 930, and / or a camera 932. The Bluetooth module 912, the WLAN module 914, and the SPS module 916 may include an on-chip transceiver (TRX) (or in some cases, just a receiver (RX) ) . The Bluetooth module 912, the WLAN module 914, and the SPS module 916 may include their own dedicated antennas and / or utilize one or more antennas 980 for communication. The cellular baseband processor (s) 924 communicates through the transceiver (s) 922 via the one or more antennas 980 with the UE 104 and / or with an RU associated with a network entity 902. The cellular baseband processor (s) 924 and the application processor (s) 906 may each include a computer-readable medium / memory 924', 906', respectively. The additional memory modules 926 may also be considered a computer-readable medium / memory. Each computer-readable medium / memory 924', 906', 926 may be non-transitory. The cellular baseband processor (s) 924 and the application processor (s) 906 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) 924 / application processor (s) 906, causes the cellular baseband processor (s) 924 / application processor (s) 906 to perform the various functions described supra. The computer-readable medium / memory may also be used for storing data that is manipulated by the cellular baseband processor (s) 924 / application processor (s) 906 when executing software. The cellular baseband processor (s) 924 / application processor (s) 906 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 904 may be at least one processor chip (modem and / or application) and include just the cellular baseband processor (s) 924 and / or the application processor (s) 906, and in another configuration, the apparatus 904 may be the entire UE (e.g., see UE 350 of FIG. 3) and include the additional modules of the apparatus 904.
[0109] As discussed supra, the event-driven CSI report CPU occupation component 198 may be configured to obtain a configuration of one or more events triggering a skip of an associated transmission of CSI to a network, where the configuration comprises a first number of symbols associated with CPU occupation, start a CPU occupation associated with a CSI measurement operation at a first symbol of an earliest measurement resource associated with the CSI measurement operation, and end, based on the first number of symbols, the CPU occupation before a final symbol of an uplink resource associated with the associated transmission of the CSI. The event-driven CSI report CPU occupation component 198 may be within the cellular baseband processor (s) 924, the application processor (s) 906, or both the cellular baseband processor (s) 924 and the application processor (s) 906. The event-driven CSI report CPU occupation 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 904 may include a variety of components configured for various functions. In one configuration, the apparatus 904, and in particular the cellular baseband processor (s) 924 and / or the application processor (s) 906, may include means for obtaining a configuration of one or more events triggering a skip of an associated transmission of channel state information (CSI) to a network. The apparatus 904, and in particular the cellular baseband processor (s) 924 and / or the application processor (s) 906, may include means for starting a CPU occupation associated with a CSI measurement operation at a first symbol of an earliest measurement resource associated with the CSI measurement operation. The apparatus 904, and in particular the cellular baseband processor (s) 924 and / or the application processor (s) 906, may include means for ending, based on the first number of symbols, the CPU occupation before a final symbol of an uplink resource associated with the associated transmission of the CSI. The apparatus 904, and in particular the cellular baseband processor (s) 924 and / or the application processor (s) 906, may include means for receiving the configuration from the network. The apparatus 904, and in particular the cellular baseband processor (s) 924 and / or the application processor (s) 906, may include means for skipping, based on the detection of the event of the one or more events, the associated transmission of CSI to the network. The apparatus 904, and in particular the cellular baseband processor (s) 924 and / or the application processor (s) 906, may include means for outputting an indication of the ending of the CPU occupation. The apparatus 904, and in particular the cellular baseband processor (s) 924 and / or the application processor (s) 906, may include means for transmitting the indication of the ending of the CPU occupation. The apparatus 904, and in particular the cellular baseband processor (s) 924 and / or the application processor (s) 906, may include means for storing the indication of the ending of the CPU occupation. The apparatus 904 may further include means for performing any of the aspects described in connection with the flowcharts in FIGs. 7 and 8, and / or performed by the UE in the communication flow of FIG. 6. The means may be the event-driven CSI report CPU occupation component 198 of the apparatus 904 configured to perform the functions recited by the means. As described supra, the apparatus 904 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.
[0110] Various aspects relate generally to rules for CPU occupation for event-driven CSI reports. Some aspects more specifically relate to rules for start and end symbols for CPU occupation for event-driven CSI reports. In some examples, a wireless device may be configured to obtain a configuration of one or more events triggering a skip of an associated transmission of CSI to a network, where the configuration comprises a first number of symbols associated with CSI processing unit (CPU) occupation, initiate a CPU occupation associated with a CSI measurement operation at a first symbol of an earliest measurement resource associated with the CSI measurement operation, and complete, based on the first number of symbols, the CPU occupation before a final symbol of an uplink resource associated with the associated transmission of the CSI.
[0111] 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 introducing rules for starting and ending CPU occupation for event-driven CSI reporting, the described techniques can be used to reduce overhead associated with CSI and allow for more CSI reporting operations over a same time period.
[0112] 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.
[0113] 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, such as a transmission, signal, or message, may transmit the data, for example with a transceiver, or may send the data to a device that transmits the data. A device configured to “obtain” data, such as a transmission, signal, or message, may receive, for example with a transceiver, or may obtain the data from a device that receives the data. 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. ”
[0114] 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.
[0115] The following aspects are illustrative only and may be combined with other aspects or teachings described herein, without limitation.
[0116] Aspect 1 is a method of wireless communication at a user equipment (UE) comprising: obtaining a configuration of one or more events triggering a skip of an associated transmission of channel state information (CSI) to a network, wherein the configuration comprises a first number of symbols associated with CSI processing unit (CPU) occupation; starting a CPU occupation associated with a CSI measurement operation at a first symbol of an earliest measurement resource associated with the CSI measurement operation; and ending, based on the first number of symbols, the CPU occupation before a final symbol of an uplink resource associated with the associated transmission of the CSI.
[0117] Aspect 2 is the method of aspect 1, wherein ending the CPU occupation before the final symbol of the uplink resource is based on a detection of an event of the one or more events, further comprising: skipping, based on the detection of the event of the one or more events, the associated transmission of CSI to the network.
[0118] Aspect 3 is the method of any of aspects 1 and 2, wherein the CPU occupation is ended at a symbol that precedes the final symbol of the uplink resource by the first number of symbols.
[0119] Aspect 4 is the method of aspect 3, wherein the first number of symbols is greater than zero.
[0120] Aspect 5 is the method of any of aspects 1 to 4, wherein the configuration comprises a plurality of candidate numbers of symbols including the first number of symbols.
[0121] Aspect 6 is the method of any of aspects 1, 2, and 5, wherein the CPU occupation is ended at a symbol that follows, by the first number of symbols, a last symbol of a last measurement resource of the CSI measurement operation.
[0122] Aspect 7 is the method of any of aspects 1 to 6, wherein the earliest measurement resource is associated with one of a CSI reference signal (CSI-RS) , a CSI interference measurement (CSI-IM) , or a synchronization signal block (SSB) .
[0123] Aspect 8 is the method of aspect of any of aspects 1, 2, 5, and 7, wherein the CPU occupation is ended at a symbol that is one of: a first symbol that precedes, by the first number of symbols, a resource associated with an indication of a transmission of the CSI to the network and preceding the uplink resource; a second symbol that follows, by the first number of symbols, the resource associated with the indication of the transmission of the CSI to the network; or a third symbol that follows, by the first number of symbols, an acknowledgment of the indication of the transmission of the CSI to the network.
[0124] Aspect 9 is the method of aspect 8, wherein the resource associated with the indication of the transmission of the CSI to the network is one of a physical uplink control channel (PUCCH) resource, a physical uplink shared channel (PUSCH) resource, or a physical random access channel (PRACH) resource.
[0125] Aspect 10 is the method of any of aspects 1 to 9, wherein obtaining the configuration comprises obtaining the configuration from the network.
[0126] Aspect 11 is the method of any of aspects 1 to 10, wherein the first number of symbols is based on at least one of a known value or a UE capability.
[0127] Aspect 12 is the method of any of aspects 1 to 11, wherein a time period from the start of the CPU occupation to the end of the CPU occupation comprises a second number of consecutive occasions of one or more of a periodic measurement resource, a semi-persistent measurement resource, or an aperiodic measurement resource associated with the CSI measurement operation.
[0128] Aspect 13 is the method of aspect 12, wherein the configuration further comprises the second number of consecutive occasions.
[0129] Aspect 14 is the method of any of aspects 1 to 13, further comprising: outputting an indication of the end of the CPU occupation.
[0130] Aspect 15 is the method of aspect 14, wherein outputting the indication of the end of the CPU occupation comprises: transmitting the indication of the end of the CPU occupation; or storing the indication of the end of the CPU occupation.
[0131] Aspect 16 is an apparatus for wireless communication at a device including a memory and at least one processor coupled to the memory and, based at least in part on information stored in the memory, the at least one processor is configured to implement any of aspects 1 to 15.
[0132] Aspect 17 is the apparatus of aspect 16, further including a transceiver or an antenna coupled to the at least one processor.
[0133] Aspect 18 is an apparatus for wireless communication at a device including means for implementing any of aspects 1 to 15.
[0134] Aspect 19 is a computer-readable medium (e.g., a non-transitory computer-readable medium) storing computer executable code, where the code when executed by a processor causes the processor to implement any of aspects 1 to 15.
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 stored information that is stored in the at least one memory, the at least one processor, individually or in any combination, is configured to:obtain a configuration of one or more events triggering a skip of an associated transmission of channel state information (CSI) to a network, wherein the configuration comprises a first number of symbols associated with CSI processing unit (CPU) occupation;start a CPU occupation associated with a CSI measurement operation at a first symbol of an earliest measurement resource associated with the CSI measurement operation; andend, based on the first number of symbols, the CPU occupation before a final symbol of an uplink resource associated with the associated transmission of the CSI.2.The apparatus of claim 1, wherein the at least one processor, individually or in any combination, is configured to end the CPU occupation before the final symbol of the uplink resource based on a detection of an event of the one or more events, and the at least one processor, individually or in any combination, is further configured to:skip, based on the detection of the event of the one or more events, the associated transmission of CSI to the network.3.The apparatus of claim 1, wherein the at least one processor, individually or in any combination, is configured to end the CPU occupation at a symbol that precedes the final symbol of the uplink resource by the first number of symbols.4.The apparatus of claim 3, wherein the first number of symbols is greater than zero.5.The apparatus of claim 1, wherein the configuration comprises a plurality of candidate numbers of symbols including the first number of symbols.6.The apparatus of claim 1, wherein the at least one processor, individually or in any combination, is configured to end the CPU occupation at a symbol that follows, by the first number of symbols, a last symbol of a last measurement resource of the CSI measurement operation.7.The apparatus of claim 1, wherein the earliest measurement resource is associated with one of a CSI reference signal (CSI-RS) , a CSI interference measurement (CSI-IM) , or a synchronization signal block (SSB) .8.The apparatus of claim 1, wherein the at least one processor, individually or in any combination, is configured to end the CPU occupation at a symbol that is one of:a first symbol that precedes, by the first number of symbols, a resource associated with an indication of a transmission of the CSI to the network and preceding the uplink resource;a second symbol that follows, by the first number of symbols, the resource associated with the indication of the transmission of the CSI to the network; ora third symbol that follows, by the first number of symbols, an acknowledgment of the indication of the transmission of the CSI to the network.9.The apparatus of claim 8, wherein the resource associated with the indication of the transmission of the CSI to the network is one of a physical uplink control channel (PUCCH) resource, a physical uplink shared channel (PUSCH) resource, or a physical random access channel (PRACH) resource.10.The apparatus of claim 1, wherein, to obtain the configuration, the at least one processor, individually or in any combination, is further configured to obtain the configuration from the network.11.The apparatus of claim 1, wherein the first number of symbols is based on at least one of a known value or a UE capability.12.The apparatus of claim 1, wherein a time period from the start of the CPU occupation to the end of the CPU occupation comprises a second number of consecutive occasions of one or more of a periodic measurement resource, a semi-persistent measurement resource, or an aperiodic measurement resource associated with the CSI measurement operation.13.The apparatus of claim 12, wherein the configuration further comprises the second number of consecutive occasions.14.The apparatus of claim 1, the at least one processor, individually or in any combination, is further configured to:output an indication of the end of the CPU occupation.15.The apparatus of claim 14, wherein, to output the indication of the end of the CPU occupation, the at least one processor, individually or in any combination, is further configured to:transmit the indication of the end of the CPU occupation; orstore the indication of the end of the CPU occupation.16.A method of wireless communication at a user equipment (UE) comprising:obtaining a configuration of one or more events triggering a skip of an associated transmission of channel state information (CSI) to a network, wherein the configuration comprises a first number of symbols associated with CSI processing unit (CPU) occupation;starting a CPU occupation associated with a CSI measurement operation at a first symbol of an earliest measurement resource associated with the CSI measurement operation; andending, based on the first number of symbols, the CPU occupation before a final symbol of an uplink resource associated with the associated transmission of the CSI.17.The method of claim 16, wherein ending the CPU occupation before the final symbol of the uplink resource is based on a detection of an event of the one or more events, further comprising:skipping, based on the detection of the event of the one or more events, the associated transmission of CSI to the network.18.The method of claim 16, wherein the CPU occupation is ended at a symbol that precedes the final symbol of the uplink resource by the first number of symbols.19.The method of claim 16, wherein the CPU occupation is ended at a symbol that follows, by the first number of symbols, a last symbol of a last measurement resource of the CSI measurement operation.20.A computer-readable medium storing computer executable code at a user equipment (UE) , the computer executable code when executed by at least one processor causes the at least one processor to:obtain a configuration of one or more events triggering a skip of an associated transmission of channel state information (CSI) to a network, wherein the configuration comprises a first number of symbols associated with CSI processing unit (CPU) occupation;start a CPU occupation associated with a CSI measurement operation at a first symbol of an earliest measurement resource associated with the CSI measurement operation; andend, based on the first number of symbols, the CPU occupation before a final symbol of an uplink resource associated with the associated transmission of the CSI.
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