WO2024168455A1

WO2024168455A1 - Proactive channel state information measurement

Info

Publication number: WO2024168455A1
Application number: PCT/CN2023/075625
Authority: WO
Inventors: Fang Yuan; Yan Zhou; Peter Gaal
Original assignee: Qualcomm Incorporated
Priority date: 2023-02-13
Filing date: 2023-02-13
Publication date: 2024-08-22

Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a configuration for proactive channel state information (CSI) measurement. The UE may generate, based at least in part on the configuration, a CSI report independently of receiving the CSI request. The UE may receive the CSI request. The UE may transmit the CSI report based at least in part on receiving the CSI request. Numerous other aspects are described.

Description

PROACTIVE CHANNEL STATE INFORMATION MEASUREMENT

FIELD OF THE DISCLOSURE

Aspects of the present disclosure generally relate to wireless communication and to techniques and apparatuses for using a timing advance for proactive channel state information measurement.

BACKGROUND

Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple-access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, or the like) . 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, time division synchronous code division multiple access (TD-SCDMA) systems, and Long Term Evolution (LTE) . LTE/LTE-Advanced is a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP) .

A wireless network may include one or more network nodes that support communication for wireless communication devices, such as a user equipment (UE) or multiple UEs. A UE may communicate with a network node via downlink communications and uplink communications. “Downlink” (or “DL” ) refers to a communication link from the network node to the UE, and “uplink” (or “UL” ) refers to a communication link from the UE to the network node. Some wireless networks may support device-to-device communication, such as via a local link (e.g., a sidelink (SL) , a wireless local area network (WLAN) link, and/or a wireless personal area network (WPAN) link, among other examples) .

The above multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different UEs to communicate on a municipal, national, regional, and/or global level. New Radio (NR) , which may be referred to as 5G, is a set of enhancements to the LTE mobile standard promulgated by the 3GPP. NR is designed to better support mobile broadband internet access by improving spectral efficiency, lowering costs, improving services, making use of new spectrum, and better integrating with other open standards using orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on the downlink, using CP-OFDM and/or single-carrier frequency division multiplexing (SC-FDM) (also known as discrete Fourier transform spread OFDM (DFT-s-OFDM) ) on the uplink, as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation. As the demand for mobile broadband access continues to increase, further improvements in LTE, NR, and other radio access technologies remain useful.

SUMMARY

Some aspects described herein relate to a method of wireless communication performed by a user equipment (UE) . The method may include receiving a configuration for proactive channel state information (CSI) measurement. The method may include generating, based at least in part on the configuration, a CSI report independently of receiving the CSI request. The method may include receiving the CSI request. The method may include transmitting the CSI report based at least in part on receiving the CSI request.

Some aspects described herein relate to a method of wireless communication performed by a network entity. The method may include generating a configuration for proactive CSI measurement that is independent of a CSI request. The method may include transmitting the configuration.

Some aspects described herein relate to a UE for wireless communication. The UE may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to receive a configuration for proactive CSI measurement. The one or more processors may be configured to generate, based at least in part on the configuration, a CSI report independently of receiving the CSI request. The one or more processors may be configured to receive the CSI request. The one or more processors may be configured to transmit the CSI report based at least in part on receiving the CSI request.

Some aspects described herein relate to a network entity for wireless communication. The network entity may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to generate a configuration for proactive CSI measurement that is independent of a CSI request. The one or more processors may be configured to transmit the configuration.

Some aspects described herein relate to a non-transitory computer-readable medium that stores a set of instructions for wireless communication by a UE. The set of instructions, when executed by one or more processors of the UE, may cause the UE to receive a configuration for proactive CSI measurement. The set of instructions, when executed by one or more processors of the UE, may cause the UE to generate, based at least in part on the configuration, a CSI report independently of receiving the CSI request. The set of instructions, when executed by one or more processors of the UE, may cause the UE to receive the CSI request. The set of instructions, when executed by one or more processors of the UE, may cause the UE to transmit the CSI report based at least in part on receiving the CSI request.

Some aspects described herein relate to a non-transitory computer-readable medium that stores a set of instructions for wireless communication by a network entity. The set of instructions, when executed by one or more processors of the network entity, may cause the network entity to generate a configuration for proactive CSI measurement that is independent of a CSI request. The set of instructions, when executed by one or more processors of the network entity, may cause the network entity to transmit the configuration.

Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for receiving a configuration for proactive CSI measurement. The apparatus may include means for generating, based at least in part on the configuration, a CSI report independently of receiving the CSI request. The apparatus may include means for receiving the CSI request. The apparatus may include means for transmitting the CSI report based at least in part on receiving the CSI request.

Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for generating a configuration for proactive CSI measurement that is independent of a CSI request. The apparatus may include means for transmitting the configuration.

Aspects generally include a method, apparatus, system, computer program product, non-transitory computer-readable medium, UE, base station, network entity, network node, wireless communication device, and/or processing system as substantially described herein with reference to and as illustrated by the drawings and specification.

The foregoing has outlined rather broadly the features and technical advantages of examples according to the disclosure in order that the detailed description that follows may be better understood. Additional features and advantages will be described hereinafter. The conception and specific examples disclosed may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. Characteristics of the concepts disclosed herein, both their organization and method of operation, together with associated advantages, will be better understood from the following description when considered in connection with the accompanying figures. Each of the figures is provided for the purposes of illustration and description, and not as a definition of the limits of the claims.

While aspects are described in the present disclosure by illustration to some examples, those skilled in the art will understand that such aspects may be implemented in many different arrangements and scenarios. Techniques described herein may be implemented using different platform types, devices, systems, shapes, sizes, and/or packaging arrangements. For example, some aspects may be implemented via integrated chip embodiments or other non-module-component based devices (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail/purchasing devices, medical devices, and/or artificial intelligence devices) . Aspects may be implemented in chip-level components, modular components, non-modular components, non-chip-level components, device-level components, and/or system-level components. Devices incorporating described aspects and features may include additional components and features for implementation and practice of claimed and described aspects. For example, transmission and reception of wireless signals may include one or more components for analog and digital purposes (e.g., hardware components including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders, and/or summers) . It is intended that aspects described herein may be practiced in a wide variety of devices, components, systems, distributed arrangements, and/or end-user devices of varying size, shape, and constitution.

BRIEF DESCRIPTION OF THE DRAWINGS

So that the above-recited features of the present disclosure can be understood in detail, a more particular description, briefly summarized above, may be had by reference to aspects, some of which are illustrated in the appended drawings. It is to be noted, however, that the appended drawings illustrate only certain typical aspects of this disclosure and are therefore not to be considered limiting of its scope, for the description may admit to other equally effective aspects. The same reference numbers in different drawings may identify the same or similar elements.

Fig. 1 is a diagram illustrating an example of a wireless network, in accordance with the present disclosure.

Fig. 2 is a diagram illustrating an example of a network node in communication with a user equipment (UE) in a wireless network, in accordance with the present disclosure.

Fig. 3 is a diagram illustrating an example disaggregated base station architecture, in accordance with the present disclosure.

Fig. 4 is a diagram illustrating an example of UE mobility, in accordance with the present disclosure.

Fig. 5 is a diagram illustrating examples of a channel state information (CSI) reference signal beam management procedures, in accordance with the present disclosure.

Fig. 6 is a diagram illustrating an example of a CSI procedure, in accordance with the present disclosure.

Fig. 7 is a diagram illustrating an example of proactive CSI measurement, in accordance with the present disclosure.

Fig. 8 is a diagram illustrating an example associated with proactive CSI measurement, in accordance with the present disclosure.

Fig. 9 is a diagram illustrating an example process performed, for example, by a UE, in accordance with the present disclosure.

Fig. 10 is a diagram illustrating an example process performed, for example, by a network entity, in accordance with the present disclosure.

Fig. 11 is a diagram of an example apparatus for wireless communication, in accordance with the present disclosure.

Fig. 12 is a diagram of an example apparatus for wireless communication, in accordance with the present disclosure.

DETAILED DESCRIPTION

Movement of a user equipment (UE) in a cell or between cells may be referred to as “UE mobility. ” For Third Generation Partnership Project (3GPP) standard Release 18, UE mobility may be handled using Layer (L1) or Layer (L2) signaling. Such mobility may be referred to as L1 or L2 (L1/L2) triggered mobility (LTM) . LTM may contrast with 3GPP standard releases that are earlier than Release 18 and that do not specify the triggering of mobility procedures using L1/L2 signaling.

A UE may provide feedback to a network entity about channel conditions for communications. This feedback may include channel state information (CSI) . In existing CSI procedures for providing CSI, the UE may start measuring and reporting CSI only after receiving a CSI request (arequest to provide CSI for a channel) . The UE expects to have time for reference signal measurements and CSI computation. However, in LTM, the network entity may indicate that the UE is to measure many candidate cells. Measuring reference signals and calculating CSI for a large quantity of candidate cells after receiving a CSI request is time consuming. This adds latency to CSI reporting.

According to various aspects described herein, the UE may be configured for proactive CSI measurement. Proactive measurement may include measuring reference signals, such as CSI reference signals (CSI-RSs) , and generating a CSI report before receiving a CSI request. The CSI report may include saved CSI information from one or more L1 measurements of reference signals taken before receiving a CSI request. Upon receiving a CSI request, the UE may provide the saved CSI report in a shorter amount of time than using existing CSI procedures. For example, the duration between the CSI request and the CSI report may be less than a configured or expected computation time. In this way, CSI is provided to the network entity with less reporting latency and less reporting overhead. The resource savings may be greater for greater quantities of candidate cells. The CSI report may also include CSI based on more measurements than existing CSI procedures, because the UE does not miss CSI measurements for which there is not enough measurement time following a CSI request. Communications will improve while signaling resources are conserved.

Various aspects of the disclosure are described more fully hereinafter with reference to the accompanying drawings. This disclosure may, however, be embodied in many different forms and should not be construed as limited to any specific structure or function presented throughout this disclosure. Rather, these aspects are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. One skilled in the art should appreciate that the scope of the disclosure is intended to cover any aspect of the disclosure disclosed herein, whether implemented independently of or combined with any other aspect of the disclosure. For example, an apparatus may be implemented or a method may be practiced using any number of the aspects set forth herein. In addition, the scope of the disclosure is intended to cover such an apparatus or method which is practiced using other structure, functionality, or structure and functionality in addition to or other than the various aspects of the disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of a claim.

Several aspects of telecommunication systems will now be presented with reference to various apparatuses and techniques. These apparatuses and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, or the like (collectively referred to as “elements” ) . These elements may be implemented using hardware, software, or combinations thereof. Whether such elements are implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system.

While aspects may be described herein using terminology commonly associated with a 5G or New Radio (NR) radio access technology (RAT) , aspects of the present disclosure can be applied to other RATs, such as a 3G RAT, a 4G RAT, and/or a RAT subsequent to 5G (e.g., 6G) .

Fig. 1 is a diagram illustrating an example of a wireless network 100, in accordance with the present disclosure. The wireless network 100 may be or may include elements of a 5G (e.g., NR) network and/or a 4G (e.g., Long Term Evolution (LTE) ) network, among other examples. The wireless network 100 may include one or more network nodes 110 (shown as a network node 110a, a network node 110b, a network node 110c, and a network node 110d) , a UE 120 or multiple UEs 120 (shown as a UE 120a, a UE 120b, a UE 120c, a UE 120d, and a UE 120e) , and/or other entities. A network node 110 is a network node that communicates with UEs 120. As shown, a network node 110 may include one or more network nodes. For example, a network node 110 may be an aggregated network node, meaning that the aggregated network node is configured to utilize a radio protocol stack that is physically or logically integrated within a single radio access network (RAN) node (e.g., within a single device or unit) . As another example, a network node 110 may be a disaggregated network node (sometimes referred to as a disaggregated base station) , meaning that the network node 110 is configured to utilize a protocol stack that is physically or logically distributed among two or more nodes (such as one or more central units (CUs) , one or more distributed units (DUs) , or one or more radio units (RUs) ) .

In some examples, a network node 110 is or includes a network node that communicates with UEs 120 via a radio access link, such as an RU. In some examples, a network node 110 is or includes a network node that communicates with other network nodes 110 via a fronthaul link or a midhaul link, such as a DU. In some examples, a network node 110 is or includes a network node that communicates with other network nodes 110 via a midhaul link or a core network via a backhaul link, such as a CU. In some examples, a network node 110 (such as an aggregated network node 110 or a disaggregated network node 110) may include multiple network nodes, such as one or more RUs, one or more CUs, and/or one or more DUs. A network node 110 may include, for example, an NR base station, an LTE base station, a Node B, an eNB (e.g., in 4G) , a gNB (e.g., in 5G) , an access point, a transmission reception point (TRP) , a DU, an RU, a CU, a mobility element of a network, a core network node, a network element, a network equipment, a RAN node, or a combination thereof. In some examples, the network nodes 110 may be interconnected to one another or to one or more other network nodes 110 in the wireless network 100 through various types of fronthaul, midhaul, and/or backhaul interfaces, such as a direct physical connection, an air interface, or a virtual network, using any suitable transport network.

In some examples, a network node 110 may provide communication coverage for a particular geographic area. In the 3GPP, the term “cell” can refer to a coverage area of a network node 110 and/or a network node subsystem serving this coverage area, depending on the context in which the term is used. A network node 110 may provide communication coverage for a macro cell, a pico cell, a femto cell, and/or another type of cell. A macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs 120 with service subscriptions. A pico cell may cover a relatively small geographic area and may allow unrestricted access by UEs 120 with service subscriptions. A femto cell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by UEs 120 having association with the femto cell (e.g., UEs 120 in a closed subscriber group (CSG) ) . A network node 110 for a macro cell may be referred to as a macro network node. A network node 110 for a pico cell may be referred to as a pico network node. A network node 110 for a femto cell may be referred to as a femto network node or an in-home network node. In the example shown in Fig. 1, the network node 110a may be a macro network node for a macro cell 102a, the network node 110b may be a pico network node for a pico cell 102b, and the network node 110c may be a femto network node for a femto cell 102c. A network node may support one or multiple (e.g., three) cells. In some examples, a cell may not necessarily be stationary, and the geographic area of the cell may move according to the location of a network node 110 that is mobile (e.g., a mobile network node) .

In some aspects, the terms “base station” or “network node” may refer to an aggregated base station, a disaggregated base station, an integrated access and backhaul (IAB) node, a relay node, or one or more components thereof. For example, in some aspects, “base station” or “network node” may refer to a CU, a DU, an RU, a Near-Real Time (Near-RT) RAN Intelligent Controller (RIC) , or a Non-Real Time (Non-RT) RIC, or a combination thereof. In some aspects, the terms “base station” or “network node” may refer to one device configured to perform one or more functions, such as those described herein in connection with the network node 110. In some aspects, the terms “base station” or “network node” may refer to a plurality of devices configured to perform the one or more functions. For example, in some distributed systems, each of a quantity of different devices (which may be located in the same geographic location or in different geographic locations) may be configured to perform at least a portion of a function, or to duplicate performance of at least a portion of the function, and the terms “base station” or “network node” may refer to any one or more of those different devices. In some aspects, the terms “base station” or “network node” may refer to one or more virtual base stations or one or more virtual base station functions. For example, in some aspects, two or more base station functions may be instantiated on a single device. In some aspects, the terms “base station” or “network node” may refer to one of the base station functions and not another. In this way, a single device may include more than one base station.

The wireless network 100 may include one or more relay stations. A relay station is a network node that can receive a transmission of data from an upstream node (e.g., a network node 110 or a UE 120) and send a transmission of the data to a downstream node (e.g., a UE 120 or a network node 110) . A relay station may be a UE 120 that can relay transmissions for other UEs 120. In the example shown in Fig. 1, the network node 110d (e.g., a relay network node) may communicate with the network node 110a (e.g., a macro network node) and the UE 120d in order to facilitate communication between the network node 110a and the UE 120d. A network node 110 that relays communications may be referred to as a relay station, a relay base station, a relay network node, a relay node, a relay, or the like.

The wireless network 100 may be a heterogeneous network that includes network nodes 110 of different types, such as macro network nodes, pico network nodes, femto network nodes, relay network nodes, or the like. These different types of network nodes 110 may have different transmit power levels, different coverage areas, and/or different impacts on interference in the wireless network 100. For example, macro network nodes may have a high transmit power level (e.g., 5 to 40 watts) whereas pico network nodes, femto network nodes, and relay network nodes may have lower transmit power levels (e.g., 0.1 to 2 watts) .

A network controller 130 may couple to or communicate with a set of network nodes 110 and may provide coordination and control for these network nodes 110. The network controller 130 may communicate with the network nodes 110 via a backhaul communication link or a midhaul communication link. The network nodes 110 may communicate with one another directly or indirectly via a wireless or wireline backhaul communication link. In some aspects, the network controller 130 may be a CU or a core network device, or may include a CU or a core network device.

The UEs 120 may be dispersed throughout the wireless network 100, and each UE 120 may be stationary or mobile. A UE 120 may include, for example, an access terminal, a terminal, a mobile station, and/or a subscriber unit. A UE 120 may be a cellular phone (e.g., a smart phone) , a personal digital assistant (PDA) , a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet, a camera, a gaming device, a netbook, a smartbook, an ultrabook, a medical device, a biometric device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring or a smart bracelet) ) , an entertainment device (e.g., a music device, a video device, and/or a satellite radio) , a vehicular component or sensor, a smart meter/sensor, industrial manufacturing equipment, a global positioning system device, a UE function of a network node, and/or any other suitable device that is configured to communicate via a wireless or wired medium.

Some UEs 120 may be considered machine-type communication (MTC) or evolved or enhanced machine-type communication (eMTC) UEs. An MTC UE and/or an eMTC UE may include, for example, a robot, a drone, a remote device, a sensor, a meter, a monitor, and/or a location tag, that may communicate with a network node, another device (e.g., a remote device) , or some other entity. Some UEs 120 may be considered Internet-of-Things (IoT) devices, and/or may be implemented as NB-IoT (narrowband IoT) devices. Some UEs 120 may be considered a Customer Premises Equipment. A UE 120 may be included inside a housing that houses components of the UE 120, such as processor components and/or memory components. In some examples, the processor components and the memory components may be coupled together. For example, the processor components (e.g., one or more processors) and the memory components (e.g., a memory) may be operatively coupled, communicatively coupled, electronically coupled, and/or electrically coupled.

In general, any number of wireless networks 100 may be deployed in a given geographic area. Each wireless network 100 may support a particular RAT and may operate on one or more frequencies. A RAT may be referred to as a radio technology, an air interface, or the like. A frequency may be referred to as a carrier, a frequency channel, or the like. Each frequency may support a single RAT in a given geographic area in order to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

In some examples, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) may communicate directly using one or more sidelink channels (e.g., without using a network node 110 as an intermediary to communicate with one another) . For example, the UEs 120 may communicate using peer-to-peer (P2P) communications, device-to-device (D2D) communications, a vehicle-to-everything (V2X) protocol (e.g., which may include a vehicle-to-vehicle (V2V) protocol, a vehicle-to-infrastructure (V2I) protocol, or a vehicle-to-pedestrian (V2P) protocol) , and/or a mesh network. In such examples, a UE 120 may perform scheduling operations, resource selection operations, and/or other operations described elsewhere herein as being performed by the network node 110.

Devices of the wireless network 100 may communicate using the electromagnetic spectrum, which may be subdivided by frequency or wavelength into various classes, bands, channels, or the like. For example, devices of the wireless network 100 may communicate using one or more operating bands. 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) . It should be understood that although a portion of FR1 is greater than 6 GHz, FR1 is often referred to (interchangeably) as a “Sub-6 GHz” band in various documents and articles. 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.

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 FR4a or FR4-1 (52.6 GHz –71 GHz) , FR4 (52.6 GHz –114.25 GHz) , and FR5 (114.25 GHz –300 GHz) . Each of these higher frequency bands falls within the EHF band.

With the above examples in mind, unless specifically stated otherwise, it should be understood that 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, it should be understood that 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, FR4-a or FR4-1, and/or FR5, or may be within the EHF band. It is contemplated that the frequencies included in these operating bands (e.g., FR1, FR2, FR3, FR4, FR4-a, FR4-1, and/or FR5) may be modified, and techniques described herein are applicable to those modified frequency ranges.

In some aspects, a UE (e.g., a UE 120) may include a communication manager 140. As described in more detail elsewhere herein, the communication manager 140 may receive a configuration for proactive CSI measurement. The communication manager 140 may generate, based at least in part on the configuration, a CSI report independently of receiving the CSI request. The communication manager 140 may receive the CSI request. The communication manager 140 may transmit the CSI report based at least in part on receiving the CSI request. Additionally, or alternatively, the communication manager 140 may perform one or more other operations described herein.

In some aspects, a network entity (e.g., a network node 110) may include a communication manager 150. As described in more detail elsewhere herein, the communication manager 150 may generate a configuration for proactive CSI measurement that is independent of a CSI request. The communication manager 150 may transmit the configuration. Additionally, or alternatively, the communication manager 150 may perform one or more other operations described herein.

As indicated above, Fig. 1 is provided as an example. Other examples may differ from what is described with regard to Fig. 1.

Fig. 2 is a diagram illustrating an example 200 of a network node 110 in communication with a UE 120 in a wireless network 100, in accordance with the present disclosure. The network node 110 may be equipped with a set of antennas 234a through 234t, such as T antennas (T ≥ 1) . The UE 120 may be equipped with a set of antennas 252a through 252r, such as R antennas (R ≥ 1) . The network node 110 of example 200 includes one or more radio frequency components, such as antennas 234 and a modem 232. In some examples, a network node 110 may include an interface, a communication component, or another component that facilitates communication with the UE 120 or another network node. Some network nodes 110 may not include radio frequency components that facilitate direct communication with the UE 120, such as one or more CUs, or one or more DUs.

At the network node 110, a transmit processor 220 may receive data, from a data source 212, intended for the UE 120 (or a set of UEs 120) . The transmit processor 220 may select one or more modulation and coding schemes (MCSs) for the UE 120 based at least in part on one or more channel quality indicators (CQIs) received from that UE 120. The network node 110 may process (e.g., encode and modulate) the data for the UE 120 based at least in part on the MCS (s) selected for the UE 120 and may provide data symbols for the UE 120. The transmit processor 220 may process system information (e.g., for semi-static resource partitioning information (SRPI) ) and control information (e.g., CQI requests, grants, and/or upper layer signaling) and provide overhead symbols and control symbols. The transmit processor 220 may generate reference symbols for reference signals (e.g., a cell-specific reference signal (CRS) or a demodulation reference signal (DMRS) ) and synchronization signals (e.g., a primary synchronization signal (PSS) or a secondary synchronization signal (SSS) ) . A transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on the data symbols, the control symbols, the overhead symbols, and/or the reference symbols, if applicable, and may provide a set of output symbol streams (e.g., T output symbol streams) to a corresponding set of modems 232 (e.g., T modems) , shown as modems 232a through 232t. For example, each output symbol stream may be provided to a modulator component (shown as MOD) of a modem 232. Each modem 232 may use a respective modulator component to process a respective output symbol stream (e.g., for OFDM) to obtain an output sample stream. Each modem 232 may further use a respective modulator component to process (e.g., convert to analog, amplify, filter, and/or upconvert) the output sample stream to obtain a downlink signal. The modems 232a through 232t may transmit a set of downlink signals (e.g., T downlink signals) via a corresponding set of antennas 234 (e.g., T antennas) , shown as antennas 234a through 234t.

At the UE 120, a set of antennas 252 (shown as antennas 252a through 252r) may receive the downlink signals from the network node 110 and/or other network nodes 110 and may provide a set of received signals (e.g., R received signals) to a set of modems 254 (e.g., R modems) , shown as modems 254a through 254r. For example, each received signal may be provided to a demodulator component (shown as DEMOD) of a modem 254. Each modem 254 may use a respective demodulator component to condition (e.g., filter, amplify, downconvert, and/or digitize) a received signal to obtain input samples. Each modem 254 may use a demodulator component to further process the input samples (e.g., for OFDM) to obtain received symbols. A MIMO detector 256 may obtain received symbols from the modems 254, may perform MIMO detection on the received symbols if applicable, and may provide detected symbols. A receive processor 258 may process (e.g., demodulate and decode) the detected symbols, may provide decoded data for the UE 120 to a data sink 260, and may provide decoded control information and system information to a controller/processor 280. The term “controller/processor” may refer to one or more controllers, one or more processors, or a combination thereof. A channel processor may determine a reference signal received power (RSRP) parameter, a received signal strength indicator (RSSI) parameter, a reference signal received quality (RSRQ) parameter, and/or a CQI parameter, among other examples. In some examples, one or more components of the UE 120 may be included in a housing 284.

The network controller 130 may include a communication unit 294, a controller/processor 290, and a memory 292. The network controller 130 may include, for example, one or more devices in a core network. The network controller 130 may communicate with the network node 110 via the communication unit 294.

One or more antennas (e.g., antennas 234a through 234t and/or antennas 252a through 252r) may include, or may be included within, one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, and/or one or more antenna arrays, among other examples. An antenna panel, an antenna group, a set of antenna elements, and/or an antenna array may include one or more antenna elements (within a single housing or multiple housings) , a set of coplanar antenna elements, a set of non-coplanar antenna elements, and/or one or more antenna elements coupled to one or more transmission and/or reception components, such as one or more components of Fig. 2.

On the uplink, at the UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information (e.g., for reports that include RSRP, RSSI, RSRQ, and/or CQI) from the controller/processor 280. The transmit processor 264 may generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be precoded by a TX MIMO processor 266 if applicable, further processed by the modems 254 (e.g., for DFT-s-OFDM or CP-OFDM) , and transmitted to the network node 110. In some examples, the modem 254 of the UE 120 may include a modulator and a demodulator. In some examples, the UE 120 includes a transceiver. The transceiver may include any combination of the antenna (s) 252, the modem (s) 254, the MIMO detector 256, the receive processor 258, the transmit processor 264, and/or the TX MIMO processor 266. The transceiver may be used by a processor (e.g., the controller/processor 280) and the memory 282 to perform aspects of any of the methods described herein (e.g., with reference to Figs. 4-12) .

At the network node 110, the uplink signals from UE 120 and/or other UEs may be received by the antennas 234, processed by the modem 232 (e.g., a demodulator component, shown as DEMOD, of the modem 232) , detected by a MIMO detector 236 if applicable, and further processed by a receive processor 238 to obtain decoded data and control information sent by the UE 120. The receive processor 238 may provide the decoded data to a data sink 239 and provide the decoded control information to the controller/processor 240. The network node 110 may include a communication unit 244 and may communicate with the network controller 130 via the communication unit 244. The network node 110 may include a scheduler 246 to schedule one or more UEs 120 for downlink and/or uplink communications. In some examples, the modem 232 of the network node 110 may include a modulator and a demodulator. In some examples, the network node 110 includes a transceiver. The transceiver may include any combination of the antenna (s) 234, the modem (s) 232, the MIMO detector 236, the receive processor 238, the transmit processor 220, and/or the TX MIMO processor 230. The transceiver may be used by a processor (e.g., the controller/processor 240) and the memory 242 to perform aspects of any of the methods described herein (e.g., with reference to Figs. 4-12.

The controller/processor of a network entity (e.g., the controller/processor 240 of the network node 110) , the controller/processor 280 of the UE 120, and/or any other component (s) of Fig. 2 may perform one or more techniques associated with proactive CSI measurement, as described in more detail elsewhere herein. For example, the controller/processor 240 of the network node 110, the controller/processor 280 of the UE 120, and/or any other component (s) of Fig. 2 may perform or direct operations of, for example, process 900 of Fig. 9, process 1000 of Fig. 10, and/or other processes as described herein. The memory 242 and the memory 282 may store data and program codes for the network node 110 and the UE 120, respectively. In some examples, the memory 242 and/or the memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code and/or program code) for wireless communication. For example, the one or more instructions, when executed (e.g., directly, or after compiling, converting, and/or interpreting) by one or more processors of the network node 110 and/or the UE 120, may cause the one or more processors, the UE 120, and/or the network node 110 to perform or direct operations of, for example, process 900 of Fig. 9, process 1000 of Fig. 10, and/or other processes as described herein. In some examples, executing instructions may include running the instructions, converting the instructions, compiling the instructions, and/or interpreting the instructions, among other examples.

In some aspects, a UE (e.g., a UE 120) includes means for receiving a configuration for proactive CSI measurement; means for generating, based at least in part on the configuration, a CSI report independently of receiving the CSI request; means for receiving the CSI request; and/or means for transmitting the CSI report based at least in part on receiving the CSI request. The means for the UE to perform operations described herein may include, for example, one or more of communication manager 140, antenna 252, modem 254, MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, controller/processor 280, or memory 282.

In some aspects, a network entity (e.g., a network node 110) includes means for generating a configuration for proactive CSI measurement that is independent of a CSI request; and/or means for transmitting the configuration. In some aspects, the means for the network entity to perform operations described herein may include, for example, one or more of communication manager 150, transmit processor 220, TX MIMO processor 230, modem 232, antenna 234, MIMO detector 236, receive processor 238, controller/processor 240, memory 242, or scheduler 246.

While blocks in Fig. 2 are illustrated as distinct components, the functions described above with respect to the blocks may be implemented in a single hardware, software, or combination component or in various combinations of components. For example, the functions described with respect to the transmit processor 264, the receive processor 258, and/or the TX MIMO processor 266 may be performed by or under the control of the controller/processor 280.

As indicated above, Fig. 2 is provided as an example. Other examples may differ from what is described with regard to Fig. 2.

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 RAN node, a core network node, a network element, a base station, or a network equipment may be implemented in an aggregated or disaggregated architecture. For example, a base station (such as a Node B (NB) , an evolved NB (eNB) , an NR base station, a 5G NB, an access point (AP) , a TRP, or a cell, among other examples) , or one or more units (or one or more components) performing base station functionality, may be implemented as an aggregated base station (also known as a standalone base station or a monolithic base station) or a disaggregated base station. “Network entity” or “network node” may refer to a disaggregated base station, or to one or more units of a disaggregated base station (such as one or more CUs, one or more DUs, one or more RUs, or a combination thereof) .

An aggregated base station (e.g., an aggregated network node) may be configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node (e.g., within a single device or unit) . A disaggregated base station (e.g., a disaggregated network node) may be configured to utilize a protocol stack that is physically or logically distributed among two or more units (such as one or more CUs, one or more DUs, or one or more RUs) . In some examples, a CU may be implemented within a network node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually distributed throughout one or multiple other network nodes. The DUs may be implemented to communicate with one or more RUs. Each of the CU, DU, and RU also can be implemented as virtual units, such as a virtual central unit (VCU) , a virtual distributed unit (VDU) , or a virtual radio unit (VRU) , among other examples.

Base station-type operation or network design may consider aggregation characteristics of base station functionality. For example, disaggregated base stations may be utilized in an IAB network, an open radio access network (O-RAN (such as the network configuration sponsored by the O-RAN Alliance) ) , or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN) ) to facilitate scaling of communication systems by separating base station functionality into one or more units that can be individually deployed. A disaggregated base station may include functionality implemented across two or more units at various physical locations, as well as functionality implemented for at least one unit virtually, which can enable flexibility in network design. The various units of the disaggregated base station can be configured for wired or wireless communication with at least one other unit of the disaggregated base station.

Fig. 3 is a diagram illustrating an example disaggregated base station architecture 300, in accordance with the present disclosure. The disaggregated base station architecture 300 may include a CU 310 that can communicate directly with a core network 320 via a backhaul link, or indirectly with the core network 320 through one or more disaggregated control units (such as a Near-RT RIC 325 via an E2 link, or a Non-RT RIC 315 associated with a Service Management and Orchestration (SMO) Framework 305, or both) . A CU 310 may communicate with one or more DUs 330 via respective midhaul links, such as through F1 interfaces. Each of the DUs 330 may communicate with one or more RUs 340 via respective fronthaul links. Each of the RUs 340 may communicate with one or more UEs 120 via respective radio frequency (RF) access links. In some implementations, a UE 120 may be simultaneously served by multiple RUs 340.

Each of the units, including the CUs 310, the DUs 330, the RUs 340, as well as the Near-RT RICs 325, the Non-RT RICs 315, and the SMO Framework 305, may include one or more interfaces or be coupled with one or more interfaces configured to receive or 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 one or multiple communication interfaces of the respective unit, can be configured to communicate with one or more of the other units via the transmission medium. In some examples, each of the units can include a wired interface, configured to receive or transmit signals over a wired transmission medium to one or more of the other units, and a wireless interface, which may include a receiver, a transmitter or transceiver (such as an RF transceiver) , configured to receive or transmit signals, or both, over a wireless transmission medium to one or more of the other units.

In some aspects, the CU 310 may host one or more higher layer control functions. Such control functions can include radio resource control (RRC) functions, packet data convergence protocol (PDCP) functions, or service data adaptation protocol (SDAP) functions, among other examples. Each control function can be implemented with an interface configured to communicate signals with other control functions hosted by the CU 310. The CU 310 may be configured to handle user plane functionality (for example, Central Unit –User Plane (CU-UP) functionality) , control plane functionality (for example, Central Unit –Control Plane (CU-CP) functionality) , or a combination thereof. In some implementations, the CU 310 can be logically split into one or more CU-UP units and one or more CU-CP units. A CU-UP unit can communicate bidirectionally with a CU-CP unit via an interface, such as the E1 interface when implemented in an O-RAN configuration. The CU 310 can be implemented to communicate with a DU 330, as necessary, for network control and signaling.

Each DU 330 may correspond to a logical unit that includes one or more base station functions to control the operation of one or more RUs 340. In some aspects, the DU 330 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 depending, at least in part, on a functional split, such as a functional split defined by the 3GPP. In some aspects, the one or more high PHY layers may be implemented by one or more modules for forward error correction (FEC) encoding and decoding, scrambling, and modulation and demodulation, among other examples. In some aspects, the DU 330 may further host one or more low PHY layers, such as implemented by one or more modules for a fast Fourier transform (FFT) , an inverse FFT (iFFT) , digital beamforming, or physical random access channel (PRACH) extraction and filtering, among other examples. Each layer (which also may be referred to as a module) can be implemented with an interface configured to communicate signals with other layers (and modules) hosted by the DU 330, or with the control functions hosted by the CU 310.

Each RU 340 may implement lower-layer functionality. In some deployments, an RU 340, controlled by a DU 330, may correspond to a logical node that hosts RF processing functions or low-PHY layer functions, such as performing an FFT, performing an iFFT, digital beamforming, or PRACH extraction and filtering, among other examples, based on a functional split (for example, a functional split defined by the 3GPP) , such as a lower layer functional split. In such an architecture, each RU 340 can be operated to handle over the air (OTA) communication with one or more UEs 120. In some implementations, real-time and non-real-time aspects of control and user plane communication with the RU (s) 340 can be controlled by the corresponding DU 330. In some scenarios, this configuration can enable each DU 330 and the CU 310 to be implemented in a cloud-based RAN architecture, such as a vRAN architecture.

The SMO Framework 305 may be configured to support RAN deployment and provisioning of non-virtualized and virtualized network elements. For non-virtualized network elements, the SMO Framework 305 may be configured to support the deployment of dedicated physical resources for RAN coverage requirements, which may be managed via an operations and maintenance interface (such as an O1 interface) . For virtualized network elements, the SMO Framework 305 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) platform 390) 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 310, DUs 330, RUs 340, non-RT RICs 315, and Near-RT RICs 325. In some implementations, the SMO Framework 305 can communicate with a hardware aspect of a 4G RAN, such as an open eNB (O-eNB) 311, via an O1 interface. Additionally, in some implementations, the SMO Framework 305 can communicate directly with each of one or more RUs 340 via a respective O1 interface. The SMO Framework 305 also may include a Non-RT RIC 315 configured to support functionality of the SMO Framework 305.

The Non-RT RIC 315 may be configured to include a logical function that enables non-real-time control and optimization of RAN elements and resources, Artificial Intelligence/Machine Learning (AI/ML) workflows including model training and updates, or policy-based guidance of applications/features in the Near-RT RIC 325. The Non-RT RIC 315 may be coupled to or communicate with (such as via an A1 interface) the Near-RT RIC 325. The Near-RT RIC 325 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 310, one or more DUs 330, or both, as well as an O-eNB, with the Near-RT RIC 325.

In some implementations, to generate AI/ML models to be deployed in the Near-RT RIC 325, the Non-RT RIC 315 may receive parameters or external enrichment information from external servers. Such information may be utilized by the Near-RT RIC 325 and may be received at the SMO Framework 305 or the Non-RT RIC 315 from non-network data sources or from network functions. In some examples, the Non-RT RIC 315 or the Near-RT RIC 325 may be configured to tune RAN behavior or performance. For example, the Non-RT RIC 315 may monitor long-term trends and patterns for performance and employ AI/ML models to perform corrective actions through the SMO Framework 305 (such as reconfiguration via an O1 interface) or via creation of RAN management policies (such as A1 interface policies) .

As indicated above, Fig. 3 is provided as an example. Other examples may differ from what is described with regard to Fig. 3.

Fig. 4 is a diagram illustrating an example 400 of UE mobility, in accordance with the present disclosure.

A UE may be traveling within a cell that is an SpCell, which includes a primary cell (PCell) and a primary secondary cell group (SCG) cell (PSCell) . Example 800 shows an existing SpCell that can be referred to as an “old SpCell 410. ” A UE 420 may travel to a new SpCell 430. This movement may be due to a user of the UE 420 walking, running, or traveling in a vehicle. Movement of the UE 420 may be referred to as “UE mobility. ” The new SpCell 430 may have been selected from among multiple candidate cells that also include SpCell 440 and SpCell 450 within a configured SpCell set 460.

For 3GPP standard Release 18, UE mobility and SpCell updates may be handled using L1 or L2 signaling. Such mobility may be referred to as L1 or L2 triggered mobility (LTM) . LTM may be based on L1 measurements, which may be both intra-frequency and inter-frequency. LTM may contrast with 3GPP standard releases that are earlier than Release 18 and that do not specify the triggering of mobility procedures using L1/L2 signaling.

As indicated above, Fig. 4 is provided as an example. Other examples may differ from what is described with regard to Fig. 4.

Fig. 5 is a diagram illustrating examples 500, 510, and 520 of a CSI-RS beam management procedures, in accordance with the present disclosure. As shown in Fig. 5, examples 500, 510, and 520 include a UE 120 in communication with a network entity (e.g., network node 110) in a wireless network (e.g., wireless network 100) . However, the devices shown in Fig. 5 are provided as examples, and the wireless network may support communication and beam management between other devices (e.g., between a UE 120 and a network node 110 or TRP, between a mobile termination node and a control node, between an integrated access and backhaul (IAB) child node and an IAB parent node, and/or between a scheduled node and a scheduling node) . In some aspects, the UE 120 and the network node 110 may be in a connected state (e.g., an RRC connected state) .

As shown in Fig. 5, example 500 may include a network node 110 (e.g., one or more network node devices such as an RU, a DU, and/or a CU, among other examples) and a UE 120 communicating to perform beam management using CSI-RSs. Example 500 depicts a first beam management procedure (e.g., P1 CSI-RS beam management) . The first beam management procedure may be referred to as a beam selection procedure, an initial beam acquisition procedure, a beam sweeping procedure, a cell search procedure, and/or a beam search procedure. As shown in Fig. 5 and example 500, CSI-RSs may be configured to be transmitted from the network node 110 to the UE 120. The CSI-RSs may be configured to be periodic (e.g., using RRC signaling) , semi- persistent (e.g., using media access control (MAC) control element (MAC-CE) signaling) , and/or aperiodic (e.g., using downlink control information (DCI) ) .

The first beam management procedure may include the network node 110 performing beam sweeping over multiple transmit (Tx) beams. The network node 110 may transmit a CSI-RS using each transmit beam for beam management. To enable the UE 120 to perform receive (Rx) beam sweeping, the network node may use a transmit beam to transmit (e.g., with repetitions) each CSI-RS at multiple times within the same RS resource set so that the UE 120 can sweep through receive beams in multiple transmission instances. For example, if the network node 110 has a set of N transmit beams and the UE 120 has a set of M receive beams, the CSI-RS may be transmitted on each of the N transmit beams M times so that the UE 120 may receive M instances of the CSI-RS per transmit beam. In other words, for each transmit beam of the network node 110, the UE 120 may perform beam sweeping through the receive beams of the UE 120. As a result, the first beam management procedure may enable the UE 120 to measure a CSI-RS on different transmit beams using different receive beams to support selection of network node 110 transmit beams/UE 120 receive beam (s) beam pair (s) . The UE 120 may report the measurements to the network node 110 to enable the network node 110 to select one or more beam pair (s) for communication between the network node 110 and the UE 120. While example 500 has been described in connection with CSI-RSs, the first beam management process may also use synchronization signal blocks (SSBs) for beam management in a similar manner as described above.

As shown in Fig. 5, example 510 may include a network node 110 and a UE 120 communicating to perform beam management using CSI-RSs. Example 510 depicts a second beam management procedure (e.g., P2 CSI-RS beam management) . The second beam management procedure may be referred to as a beam refinement procedure, a network node beam refinement procedure, a TRP beam refinement procedure, and/or a transmit beam refinement procedure. As shown in Fig. 5 and example 510, CSI-RSs may be configured to be transmitted from the network node 110 to the UE 120. The CSI-RSs may be configured to be aperiodic (e.g., using DCI) . The second beam management procedure may include the network node 110 performing beam sweeping over one or more transmit beams. The one or more transmit beams may be a subset of all transmit beams associated with the network node 110 (e.g., determined based at least in part on measurements reported by the UE 120 in connection with the first beam management procedure) . The network node 110 may transmit a CSI-RS using each transmit beam of the one or more transmit beams for beam management. The UE 120 may measure each CSI-RS using a single (e.g., a same) receive beam (e.g., determined based at least in part on measurements performed in connection with the first beam management procedure) . The second beam management procedure may enable the network node 110 to select a best transmit beam based at least in part on measurements of the CSI-RSs (e.g., measured by the UE 120 using the single receive beam) reported by the UE 120.

As shown in Fig. 5, example 520 depicts a third beam management procedure (e.g., P3 CSI-RS beam management) . The third beam management procedure may be referred to as a beam refinement procedure, a UE beam refinement procedure, and/or a receive beam refinement procedure. As shown in Fig. 5 and example 520, one or more CSI-RSs may be configured to be transmitted from the network node 110 to the UE 120. The CSI-RSs may be configured to be aperiodic (e.g., using DCI) . The third beam management process may include the network node 110 transmitting the one or more CSI-RSs using a single transmit beam (e.g., determined based at least in part on measurements reported by the UE 120 in connection with the first beam management procedure and/or the second beam management procedure) . To enable the UE 120 to perform receive beam sweeping, the network node may use a transmit beam to transmit (e.g., with repetitions) CSI-RS at multiple times within the same RS resource set so that UE 120 can sweep through one or more receive beams in multiple transmission instances. The one or more receive beams may be a subset of all receive beams associated with the UE 120 (e.g., determined based at least in part on measurements performed in connection with the first beam management procedure and/or the second beam management procedure) . The third beam management procedure may enable the network node 110 and/or the UE 120 to select a best receive beam based at least in part on reported measurements received from the UE 120 (e.g., of the CSI-RS of the transmit beam using the one or more receive beams) .

As indicated above, Fig. 5 is provided as an example of beam management procedures. Other examples of beam management procedures may differ from what is described with respect to Fig. 5. For example, the UE 120 and the network node 110 may perform the third beam management procedure before performing the second beam management procedure, and/or the UE 120 and the network node 110 may perform a similar beam management procedure to select a UE transmit beam.

Fig. 6 is a diagram illustrating an example 600 of a CSI procedure, in accordance with the present disclosure.

In existing CSI procedures, the UE may start measuring and reporting CSI only after receiving a CSI request. Example 600 shows a timeline for a CSI procedure after the UE receives DCI with a CSI request for cell A and cell B. The UE expects to have time for reference signal measurements and CSI computation. If there is not enough time after the DCI, no measurement takes place. Example 600 shows that a first L1 measurement for SpCell1 at frequency A and for SpCell2 at frequency B does not take place. A second L1 measurement for the SpCells does take place if there is enough time. There is also computation time that allows the UE to prepare the L1 report for transmission on a physical uplink shared channel (PUSCH) after the second L1 measurements.

In LTM, the UE may be indicated to measure many candidate cells, which may be time consuming after receiving the CSI request. The UE may not have sufficient time to perform measurements and generate CSI for a large quantity of candidate cells. This will result in more reporting latency and more reporting overhead.

As indicated above, Fig. 6 is provided as an example. Other examples may differ from what is described with regard to Fig. 6.

Fig. 7 is a diagram illustrating an example 700 of proactive CSI measurement, in accordance with the present disclosure.

According to various aspects described herein, a UE may be configured for proactive CSI measurement. Proactive measurement may include measuring reference signals (e.g., CSI-RSs) and generating a CSI report before receiving a CSI request. The CSI report may include saved CSI information from one or more L1 measurements of reference signals that take place before receiving a CSI request. Upon receiving a CSI request, the UE may provide the saved CSI report in a shorter amount of time than existing CSI procedures. For example, the duration between the CSI request and the CSI report may be less than a configured or expected computation time. In this way, CSI is provided to the network entity with less reporting latency and less reporting overhead. The CSI report may also include more measurements than existing CSI procedures because the UE does not miss CSI for which there is not enough measurement time following a CSI request. Communications improve while signaling resources are conserved. The resource savings may be greater for greater quantities of candidate cells.

Example 700 shows that L1 measurements are saved for cell A and cell B before receiving DCI that includes a CSI request. The L1 measurements may be for indicated candidate cells or for any candidate cells. In example 700, L1 measurement 702 for SpCell1 at frequency A (cell A) is saved as saved report 704. L1 measurement 706 for SpCell2 at frequency B (cell B) is saved as saved report 708. Saved report 704 and saved report 708 may form a combined CSI report (e.g., CSI feedback, P2 beam management information from a beam selected by a P1 beam management procedure) .

The UE may update the CSI report based at least in part on an updated measurement, after generating the CSI report and before transmitting the CSI report. This may include saving L1 measurement 710 as saved report 712 and saving L1 measurement 714 as saved report 716, where saved report 712 and saved report 716 form the updated CSI report.

Upon receiving DCI 718 (e.g., for cell A and cell B) with a CSI request, the UE may provide the CSI report (e.g., a L1 report on a PUSCH) that is based at least in part on the recent reports that were saved before receiving the CSI request. In some aspects, the network entity may request the latest L1 measurement results via CSI request signaling (e.g., MAC CE, DCI) , by scheduling a physical uplink control channel (PUCCH) communication, or by scheduling a PUSCH communication in the serving cell. The network entity may request the results if a candidate cell is expected to be a new cell based on a P1 report.

In some aspects, for LTM with multiple candidate cells, the UE may report a UE capability for proactive L1 measurements. For example, a UE capability may indicate a quantity of reference signals per channel measurement set, per candidate cell, or across all the candidate cells configured for proactive L1 measurements. A UE capability may indicate a quantity of reports per candidate cell or a quantity of reports across all the candidate cells configured for proactive L1 measurements. A UE capability may indicate metrics of reports configurable for proactive L1 measurements (e.g., L1-RSRP, L1 signal-to-interference-plus-noise ratio (L1-SINR) , CQI) .

In some aspects, for LTM with multiple candidate cells, the UE may perform proactive L1 measurements for a potential CSI report using a quantity of CSI processing units (CPUs) available to the UE. For example, the CPUs used for proactive L1 measurement and used for non-proactive L1 measurement may be counted toward a total quantity of CPUs that the UE can maintain. When the UE is indicated to maintain one more proactive CSI report, the UE may be able to maintain one less non-proactive CSI report. In another example, the CPUs used for proactive L1 measurement may be counted separately from CPUs that the UE can maintain for non-proactive L1 measurements. The UE may manage its processing resources based at least in part on how the CPUs are counted. The UE may indicate a UE capability for using CPUs for L1 measurements based at least in part on how the CPUs are counted.

As indicated above, Fig. 7 is provided as an example. Other examples may differ from what is described with regard to Fig. 7.

Fig. 8 is a diagram illustrating an example 800 associated with proactive CSI measurement, in accordance with the present disclosure. As shown in Fig. 8, a network entity 810 (e.g., network node 110) and a UE 820 (e.g., UE 120) may communicate with one another via a wireless network (e.g., wireless network 100) . The network entity 810 may serve multiple candidate cells (e.g., SpCells) . Other network entities, such as network entity 830 and network entity 840, may serve other candidate cells (e.g., SpCells) .

Example 800 shows the proactive CSI measurement of UE 820. As shown by reference number 845, the UE 820 may transmit a UE capability for proactive CSI measurement, as described above in connection with Fig. 7. As shown by reference number 850, the network entity 810 may generate a configuration for proactive CSI measurement, where the CSI measuring takes place independently of whether a CSI request is received. CSI measuring independently of receiving a CSI request may include CSI measuring without having received a related CSI request, CSI measuring prior to having received a related CSI request, or CSI measuring regardless of whether a CSI request has been received. Proactive CSI measurement may take place after a previous CSI report has already been provided in response to a previous CSI request. Proactive CSI measurement may not be associated with any previous CSI requests for which a CSI report has been sent or that have been received greater than a threshold time. With proactive CSI measurement, the UE 820 may generate a measurement result for a potential future CSI request. Proactive CSI measurement may occur without direction or indication by any CSI requests. As shown by reference number 855, the network entity 810 may transmit the configuration.

The UE 820 may generate CSI for multiple candidate cells. As shown by reference number 860, the network entity 810 may transmit reference signals (e.g., CSI-RSs) . Other network entities, such as network entity 830 and network entity 840, may also transmit CSI-RSs. As shown by reference number 865, the UE 820 may measure the CSI-RSs and generate a CSI report independently of (e.g., before, without regard to) receiving a CSI request. This may include saving CSI measurements into a CSI report that is ready to be transmitted as soon as a CSI request is received. A CSI report may be generated for each candidate cell. A CSI report may include CSI for multiple candidate cells.

In some aspects, the CSI report can be updated with new CSI measurements. As shown by reference number 870, the network entities may transmit more CSI-RSs. As shown by reference number 875, the UE 820 may measure the new CSI-RSs and update the CSI report. This may include replacing CSI for older CSI-RS measurements with CSI for newer CSI-RS measurements.

As shown by reference number 880, the network entity 810 may transmit a CSI request. The CSI request may be included in DCI, including scheduling DCI. As shown by reference number 885, the UE 820 may transmit the CSI report. The UE 820 may transmit the CSI report in less time than the configured computation time between receiving a CSI request and transmitting a calculated CSI report. As a result, reporting latency and reporting overhead decreases and signaling resources are conserved.

In some aspects, the configuration may indicate that the UE 820 can provide the CSI report that is independent of a CSI request. In this scenario, the UE 820 may transmit the CSI report without having received a CSI request, prior to receiving a CSI request, or without regard to whether a CSI request has been received. This may be considered proactive CSI measurement and reporting.

As indicated above, Fig. 8 is provided as an example. Other examples may differ from what is described with respect to Fig. 8.

Fig. 9 is a diagram illustrating an example process 900 performed, for example, by a UE, in accordance with the present disclosure. Example process 900 is an example where the UE (e.g., UE 120, UE 820) performs operations associated with proactive CSI measurement.

As shown in Fig. 9, in some aspects, process 900 may include receiving a configuration for proactive CSI measurement (block 910) . For example, the UE (e.g., using reception component 1102 and/or communication manager 1106 depicted in Fig. 11) may receive a configuration for proactive CSI measurement, as described above.

As further shown in Fig. 9, in some aspects, process 900 may include generating, based at least in part on the configuration, a CSI report independently of receiving the CSI request (block 920) . For example, the UE (e.g., using communication manager 1106 depicted in Fig. 11) may generate, based at least in part on the configuration, a CSI report independently of receiving the CSI request, as described above.

As further shown in Fig. 9, in some aspects, process 900 may include receiving the CSI request (block 930) . For example, the UE (e.g., using reception component 1102 and/or communication manager 1106 depicted in Fig. 11) may receive the CSI request, as described above.

As further shown in Fig. 9, in some aspects, process 900 may include transmitting the CSI report based at least in part on receiving the CSI request (block 940) . For example, the UE (e.g., using transmission component 1104 and/or communication manager 1106, depicted in Fig. 11) may transmit the CSI report based at least in part on receiving the CSI request, as described above.

Process 900 may include additional aspects, such as any single aspect or any combination of aspects described below and/or in connection with one or more other processes described elsewhere herein.

In a first aspect, the configuration is associated with an LTM procedure.

In a second aspect, alone or in combination with the first aspect, process 900 includes updating the CSI report based at least in part on an updated measurement after generating the CSI report and before transmitting the CSI report.

In a third aspect, alone or in combination with one or more of the first and second aspects, generating the CSI report includes generating a respective CSI report for each candidate cell of a plurality of candidate cells.

In a fourth aspect, alone or in combination with one or more of the first through third aspects, process 900 includes transmitting a UE capability for proactive CSI measurement.

In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, the UE capability indicates a quantity of reference signals, per channel measurement set, per candidate cell, or across all candidate cells, configured for proactive measurements.

In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, the UE capability indicates a quantity of CSI reports, per candidate cell or across all candidate cells, configured for proactive measurements.

In a seventh aspect, alone or in combination with one or more of the first through sixth aspects, the UE capability indicates one or more metrics of CSI reports that are configurable for proactive measurements.

In an eighth aspect, alone or in combination with one or more of the first through seventh aspects, the UE capability includes a capability for CSI processing that is based at least in part on a total quantity of CSI processing units, and CSI processing units for proactive CSI measurement and CSI processing units for non-proactive CSI measurement are counted toward the total quantity.

In a ninth aspect, alone or in combination with one or more of the first through eighth aspects, the UE capability includes a capability for CSI processing that is based at least in part on a total quantity of CSI processing units, and CSI processing units for proactive CSI measurement are counted separately from CSI processing units for non-proactive CSI measurement.

Although Fig. 9 shows example blocks of process 900, in some aspects, process 900 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Fig. 9. Additionally, or alternatively, two or more of the blocks of process 900 may be performed in parallel.

Fig. 10 is a diagram illustrating an example process 1000 performed, for example, by a network entity, in accordance with the present disclosure. Example process 1000 is an example where the network entity (e.g., network node 110, network entity 810) performs operations associated with proactive CSI measurement.

As shown in Fig. 10, in some aspects, process 1000 may include generating a configuration for proactive CSI measurement that is independent of a CSI request (block 1010) . For example, the network entity (e.g., using communication manager 1206 depicted in Fig. 12) may generate a configuration for proactive CSI measurement that is independent of a CSI request, as described above.

As further shown in Fig. 10, in some aspects, process 1000 may include transmitting the configuration (block 1020) . For example, the network entity (e.g., using transmission component 1204 and/or communication manager 1206 depicted in Fig. 12) may transmit the configuration, as described above.

Process 1000 may include additional aspects, such as any single aspect or any combination of aspects described below and/or in connection with one or more other processes described elsewhere herein.

In a first aspect, the configuration is associated with an LTM procedure.

In a second aspect, alone or in combination with the first aspect, process 1000 includes receiving a UE capability for proactive CSI measurement, and generating the configuration includes generating the configuration based at least in part on the UE capability.

In a third aspect, alone or in combination with one or more of the first and second aspects, the UE capability indicates a quantity of reference signals, per channel measurement set, per candidate cell, or across all candidate cells, configured for proactive measurements.

In a fourth aspect, alone or in combination with one or more of the first through third aspects, the UE capability indicates a quantity of CSI reports, per candidate cell or across all candidate cells, configured for proactive measurements.

In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, the UE capability indicates one or more metrics of CSI reports that are configurable for proactive measurements.

In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, the UE capability includes a capability for CSI processing that is based at least in part on a total quantity of CSI processing units, and CSI processing units for proactive CSI measurement and CSI processing units for non-proactive CSI measurement are counted toward the total quantity.

In a seventh aspect, alone or in combination with one or more of the first through sixth aspects, the UE capability includes a capability for CSI processing that is based at least in part on a total quantity of CSI processing units, and CSI processing units for proactive CSI measurement are counted separately from CSI processing units for non-proactive CSI measurement.

In an eighth aspect, alone or in combination with one or more of the first through seventh aspects, process 1000 includes transmitting the CSI request, and receiving a CSI report based at least in part on transmitting the CSI request.

Although Fig. 10 shows example blocks of process 1000, in some aspects, process 1000 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Fig. 10. Additionally, or alternatively, two or more of the blocks of process 1000 may be performed in parallel.

Fig. 11 is a diagram of an example apparatus 1100 for wireless communication, in accordance with the present disclosure. The apparatus 1100 may be a UE (e.g., UE 120, UE 820) , or a UE may include the apparatus 1100. In some aspects, the apparatus 1100 includes a reception component 1102, a transmission component 1104, and/or a communication manager 1106, which may be in communication with one another (for example, via one or more buses and/or one or more other components) . In some aspects, the communication manager 1106 is the communication manager 140 described in connection with Fig. 1. As shown, the apparatus 1100 may communicate with another apparatus 1108, such as a UE or a network node (such as a CU, a DU, an RU, or a base station) , using the reception component 1102 and the transmission component 1104.

In some aspects, the apparatus 1100 may be configured to perform one or more operations described herein in connection with Figs. 1-8. Additionally, or alternatively, the apparatus 1100 may be configured to perform one or more processes described herein, such as process 900 of Fig. 9. In some aspects, the apparatus 1100 and/or one or more components shown in Fig. 11 may include one or more components of the UE described in connection with Fig. 2. Additionally, or alternatively, one or more components shown in Fig. 11 may be implemented within one or more components described in connection with Fig. 2. Additionally, or alternatively, one or more components of the set of components may be implemented at least in part as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or a processor to perform the functions or operations of the component.

The reception component 1102 may receive communications, such as reference signals, control information, data communications, or a combination thereof, from the apparatus 1108. The reception component 1102 may provide received communications to one or more other components of the apparatus 1100. In some aspects, the reception component 1102 may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, de-mapping, equalization, interference cancellation, or decoding, among other examples) , and may provide the processed signals to the one or more other components of the apparatus 1100. In some aspects, the reception component 1102 may include one or more antennas, a modem, a demodulator, a MIMO detector, a receive processor, a controller/processor, a memory, or a combination thereof, of the UE described in connection with Fig. 2.

The transmission component 1104 may transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the apparatus 1108. In some aspects, one or more other components of the apparatus 1100 may generate communications and may provide the generated communications to the transmission component 1104 for transmission to the apparatus 1108. In some aspects, the transmission component 1104 may perform signal processing on the generated communications (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, among other examples) , and may transmit the processed signals to the apparatus 1108. In some aspects, the transmission component 1104 may include one or more antennas, a modem, a modulator, a transmit MIMO processor, a transmit processor, a controller/processor, a memory, or a combination thereof, of the UE described in connection with Fig. 2. In some aspects, the transmission component 1104 may be co-located with the reception component 1102 in a transceiver.

The communication manager 1106 may support operations of the reception component 1102 and/or the transmission component 1104. For example, the communication manager 1106 may receive information associated with configuring reception of communications by the reception component 1102 and/or transmission of communications by the transmission component 1104. Additionally, or alternatively, the communication manager 1106 may generate and/or provide control information to the reception component 1102 and/or the transmission component 1104 to control reception and/or transmission of communications.

The reception component 1102 may receive a configuration for proactive CSI measurement. The communication manager 1106 may generate, based at least in part on the configuration, a CSI report independently of receiving the CSI request. The reception component 1102 may receive the CSI request. The transmission component 1104 may transmit the CSI report based at least in part on receiving the CSI request.

The communication manager 1106 may update the CSI report based at least in part on an updated measurement after generating the CSI report and before transmitting the CSI report. The transmission component 1104 may transmit a UE capability for proactive CSI measurement.

The number and arrangement of components shown in Fig. 11 are provided as an example. In practice, there may be additional components, fewer components, different components, or differently arranged components than those shown in Fig. 11. Furthermore, two or more components shown in Fig. 11 may be implemented within a single component, or a single component shown in Fig. 11 may be implemented as multiple, distributed components. Additionally, or alternatively, a set of (one or more) components shown in Fig. 11 may perform one or more functions described as being performed by another set of components shown in Fig. 11.

Fig. 12 is a diagram of an example apparatus 1200 for wireless communication, in accordance with the present disclosure. The apparatus 1200 may be a network entity (e.g., network node 110, network entity 810) , or a network entity may include the apparatus 1200. In some aspects, the apparatus 1200 includes a reception component 1202, a transmission component 1204, and/or a communication manager 1206, which may be in communication with one another (for example, via one or more buses and/or one or more other components) . In some aspects, the communication manager 1206 is the communication manager 150 described in connection with Fig. 1. As shown, the apparatus 1200 may communicate with another apparatus 1208, such as a UE or a network node (such as a CU, a DU, an RU, or a base station) , using the reception component 1202 and the transmission component 1204.

In some aspects, the apparatus 1200 may be configured to perform one or more operations described herein in connection with Figs. 1-8. Additionally, or alternatively, the apparatus 1200 may be configured to perform one or more processes described herein, such as process 1000 of Fig. 10. In some aspects, the apparatus 1200 and/or one or more components shown in Fig. 12 may include one or more components of the network entity described in connection with Fig. 2. Additionally, or alternatively, one or more components shown in Fig. 12 may be implemented within one or more components described in connection with Fig. 2. Additionally, or alternatively, one or more components of the set of components may be implemented at least in part as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or a processor to perform the functions or operations of the component.

The reception component 1202 may receive communications, such as reference signals, control information, data communications, or a combination thereof, from the apparatus 1208. The reception component 1202 may provide received communications to one or more other components of the apparatus 1200. In some aspects, the reception component 1202 may perform signal processing on the received communications (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, de-mapping, equalization, interference cancellation, or decoding, among other examples) , and may provide the processed signals to the one or more other components of the apparatus 1200. In some aspects, the reception component 1202 may include one or more antennas, a modem, a demodulator, a MIMO detector, a receive processor, a controller/processor, a memory, or a combination thereof, of the network entity described in connection with Fig. 2.

The transmission component 1204 may transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the apparatus 1208. In some aspects, one or more other components of the apparatus 1200 may generate communications and may provide the generated communications to the transmission component 1204 for transmission to the apparatus 1208. In some aspects, the transmission component 1204 may perform signal processing on the generated communications (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, among other examples) , and may transmit the processed signals to the apparatus 1208. In some aspects, the transmission component 1204 may include one or more antennas, a modem, a modulator, a transmit MIMO processor, a transmit processor, a controller/processor, a memory, or a combination thereof, of the network entity described in connection with Fig. 2. In some aspects, the transmission component 1204 may be co-located with the reception component 1202 in a transceiver.

The communication manager 1206 may support operations of the reception component 1202 and/or the transmission component 1204. For example, the communication manager 1206 may receive information associated with configuring reception of communications by the reception component 1202 and/or transmission of communications by the transmission component 1204. Additionally, or alternatively, the communication manager 1206 may generate and/or provide control information to the reception component 1202 and/or the transmission component 1204 to control reception and/or transmission of communications.

The communication manager 1206 may generate a configuration for proactive CSI measurement that is independent of a CSI request. The transmission component 1204 may transmit the configuration. The reception component 1202 may receive a UE capability for proactive CSI measurement, wherein generating the configuration includes generating the configuration based at least in part on the UE capability.

The transmission component 1204 may transmit the CSI request. The reception component 1202 may receive a CSI report based at least in part on transmitting the CSI request.

The number and arrangement of components shown in Fig. 12 are provided as an example. In practice, there may be additional components, fewer components, different components, or differently arranged components than those shown in Fig. 12. Furthermore, two or more components shown in Fig. 12 may be implemented within a single component, or a single component shown in Fig. 12 may be implemented as multiple, distributed components. Additionally, or alternatively, a set of (one or more) components shown in Fig. 12 may perform one or more functions described as being performed by another set of components shown in Fig. 12.

The following provides an overview of some Aspects of the present disclosure:

Aspect 1: A method of wireless communication performed by a user equipment (UE) , comprising: receiving a configuration for proactive channel state information (CSI) measurement; generating, based at least in part on the configuration, a CSI report independently of receiving the CSI request; receiving the CSI request; and transmitting the CSI report based at least in part on receiving the CSI request.

Aspect 2: The method of Aspect 1, wherein the configuration is associated with a Layer 1 or Layer 2 triggered mobility (LTM) procedure.

Aspect 3: The method of any of Aspects 1-2, further comprising updating the CSI report based at least in part on an updated measurement after generating the CSI report and before transmitting the CSI report.

Aspect 4: The method of any of Aspects 1-3, wherein generating the CSI report includes generating a respective CSI report for each candidate cell of a plurality of candidate cells.

Aspect 5: The method of any of Aspects 1-4, further comprising transmitting a UE capability for proactive CSI measurement.

Aspect 6: The method of any of Aspects 1-5, wherein the UE capability indicates a quantity of reference signals, per channel measurement set, per candidate cell, or across all candidate cells, configured for proactive measurements.

Aspect 7: The method of any of Aspects 1-6, wherein the UE capability indicates a quantity of CSI reports, per candidate cell or across all candidate cells, configured for proactive measurements.

Aspect 8: The method of any of Aspects 1-7, wherein the UE capability indicates one or more metrics of CSI reports that are configurable for proactive measurements.

Aspect 9: The method of any of Aspects 1-8, wherein the UE capability includes a capability for CSI processing that is based at least in part on a total quantity of CSI processing units, and wherein CSI processing units for proactive CSI measurement and CSI processing units for non-proactive CSI measurement are counted toward the total quantity.

Aspect 10: The method of any of Aspects 1-8, wherein the UE capability includes a capability for CSI processing that is based at least in part on a total quantity of CSI processing units, and wherein CSI processing units for proactive CSI measurement are counted separately from CSI processing units for non-proactive CSI measurement.

Aspect 11: A method of wireless communication performed by a network entity, comprising: generating a configuration for proactive channel state information (CSI) measurement that is independent of a CSI request; and transmitting the configuration.

Aspect 12: The method of Aspect 11, wherein the configuration is associated with a Layer 1 or Layer 2 triggered mobility (LTM) procedure.

Aspect 13: The method of any of Aspects 11-12, further comprising receiving a UE capability for proactive CSI measurement, wherein generating the configuration includes generating the configuration based at least in part on the UE capability.

Aspect 14: The method of any of Aspects 11-13, wherein the UE capability indicates a quantity of reference signals, per channel measurement set, per candidate cell, or across all candidate cells, configured for proactive measurements.

Aspect 15: The method of any of Aspects 11-14, wherein the UE capability indicates a quantity of CSI reports, per candidate cell or across all candidate cells, configured for proactive measurements.

Aspect 16: The method of any of Aspects 11-15, wherein the UE capability indicates one or more metrics of CSI reports that are configurable for proactive measurements.

Aspect 17: The method of any of Aspects 11-16, wherein the UE capability includes a capability for CSI processing that is based at least in part on a total quantity of CSI processing units, and wherein CSI processing units for proactive CSI measurement and CSI processing units for non-proactive CSI measurement are counted toward the total quantity.

Aspect 18: The method of any of Aspects 11-16, wherein the UE capability includes a capability for CSI processing that is based at least in part on a total quantity of CSI processing units, and wherein CSI processing units for proactive CSI measurement are counted separately from CSI processing units for non-proactive CSI measurement.

Aspect 19: The method of any of Aspects 11-18, further comprising: transmitting the CSI request; and receiving a CSI report based at least in part on transmitting the CSI request.

Aspect 20: An apparatus for wireless communication at a device, comprising a processor; memory coupled with the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method of one or more of Aspects 1-19.

Aspect 21: A device for wireless communication, comprising a memory and one or more processors coupled to the memory, the one or more processors configured to perform the method of one or more of Aspects 1-19.

Aspect 22: An apparatus for wireless communication, comprising at least one means for performing the method of one or more of Aspects 1-19.

Aspect 23: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method of one or more of Aspects 1-19.

Aspect 24: A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method of one or more of Aspects 1-19.

The foregoing disclosure provides illustration and description but is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations may be made in light of the above disclosure or may be acquired from practice of the aspects.

As used herein, the term “component” is intended to be broadly construed as hardware and/or a combination of hardware and software. “Software” shall be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, and/or functions, among other examples, whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise. As used herein, a “processor” is implemented in hardware and/or a combination of hardware and software. It will be apparent that systems and/or methods described herein may be implemented in different forms of hardware and/or a combination of hardware and software. The actual specialized control hardware or software code used to implement these systems and/or methods is not limiting of the aspects. Thus, the operation and behavior of the systems and/or methods are described herein without reference to specific software code, since those skilled in the art will understand that software and hardware can be designed to implement the systems and/or methods based, at least in part, on the description herein.

As used herein, “satisfying a threshold” may, depending on the context, refer to a value being greater than the threshold, greater than or equal to the threshold, less than the threshold, less than or equal to the threshold, equal to the threshold, not equal to the threshold, or the like.

Even though particular combinations of features are recited in the claims and/or disclosed in the specification, these combinations are not intended to limit the disclosure of various aspects. Many of these features may be combined in ways not specifically recited in the claims and/or disclosed in the specification. The disclosure of various aspects includes each dependent claim in combination with every other claim in the claim set. As used herein, a phrase referring to “at least one of” a list of items refers to any combination of those items, including single members. As an example, “at least one of: a, b, or c” is intended to cover a, b, c, a + b, a + c, b + c, and a + b + c, as well as any combination with multiples of the same element (e.g., a + a, a + a + a, a + a + b, a +a + c, a + b + b, a + c + c, b + b, b + b + b, b + b + c, c + c, and c + c + c, or any other ordering of a, b, and c) .

No element, act, or instruction used herein should be construed as critical or essential unless explicitly described as such. Also, as used herein, the articles “a” and “an” are intended to include one or more items and may be used interchangeably with “one or more. ” Further, as used herein, the article “the” is intended to include one or more items referenced in connection with the article “the” and may be used interchangeably with “the one or more. ” Furthermore, as used herein, the terms “set” and “group” are intended to include one or more items and may be used interchangeably with “one or more. ” Where only one item is intended, the phrase “only one” or similar language is used. Also, as used herein, the terms “has, ” “have, ” “having, ” or the like are intended to be open-ended terms that do not limit an element that they modify (e.g., an element “having” A may also have B) . Further, the phrase “based on” is intended to mean “based, at least in part, on” unless explicitly stated otherwise. Also, as used herein, the term “or” is intended to be inclusive when used in a series and may be used interchangeably with “and/or, ” unless explicitly stated otherwise (e.g., if used in combination with “either” or “only one of” ) .

Claims

A user equipment (UE) for wireless communication, comprising:

a memory; and

one or more processors, coupled to the memory, configured to:

receive a configuration for proactive channel state information (CSI) measurement;

generate, based at least in part on the configuration, a CSI report independently of receiving the CSI request;

receive the CSI request; and

transmit the CSI report based at least in part on receiving the CSI request.
The UE of claim 1, wherein the configuration is associated with a Layer 1 or Layer 2 triggered mobility (LTM) procedure.
The UE of claim 1, wherein the one or more processors are configured to update the CSI report based at least in part on an updated measurement after generating the CSI report and before transmitting the CSI report.
The UE of claim 1, wherein the one or more processors, to generate the CSI report, are configured to generate a respective CSI report for each candidate cell of a plurality of candidate cells.
The UE of claim 1, wherein the one or more processors are configured to transmit a UE capability for proactive CSI measurement.
The UE of claim 5, wherein the UE capability indicates a quantity of reference signals, per channel measurement set, per candidate cell, or across all candidate cells, configured for proactive measurements.
The UE of claim 5, wherein the UE capability indicates a quantity of CSI reports, per candidate cell or across all candidate cells, configured for proactive measurements.
The UE of claim 5, wherein the UE capability indicates one or more metrics of CSI reports that are configurable for proactive measurements.
The UE of claim 5, wherein the UE capability includes a capability for CSI processing that is based at least in part on a total quantity of CSI processing units, and wherein CSI processing units for proactive CSI measurement and CSI processing units for non-proactive CSI measurement are counted toward the total quantity.
The UE of claim 5, wherein the UE capability includes a capability for CSI processing that is based at least in part on a total quantity of CSI processing units, and wherein CSI processing units for proactive CSI measurement are counted separately from CSI processing units for non-proactive CSI measurement.
A network entity for wireless communication, comprising:

a memory; and

one or more processors, coupled to the memory, configured to:

generate a configuration for proactive channel state information (CSI) measurement that is independent of a CSI request; and

transmit the configuration.
The network entity of claim 11, wherein the configuration is associated with a Layer 1 or Layer 2 triggered mobility (LTM) procedure.
The network entity of claim 11, wherein the one or more processors are configured to receive a UE capability for proactive CSI measurement, wherein the one or more processors, to generate the configuration, are configured to generate the configuration based at least in part on the UE capability.
The network entity of claim 13, wherein the UE capability indicates a quantity of reference signals, per channel measurement set, per candidate cell, or across all candidate cells, configured for proactive measurements.
The network entity of claim 13, wherein the UE capability indicates a quantity of CSI reports, per candidate cell or across all candidate cells, configured for proactive measurements.
The network entity of claim 13, wherein the UE capability indicates one or more metrics of CSI reports that are configurable for proactive measurements.
The network entity of claim 13, wherein the UE capability includes a capability for CSI processing that is based at least in part on a total quantity of CSI processing units, and wherein CSI processing units for proactive CSI measurement and CSI processing units for non-proactive CSI measurement are counted toward the total quantity.
The network entity of claim 13, wherein the UE capability includes a capability for CSI processing that is based at least in part on a total quantity of CSI processing units, and wherein CSI processing units for proactive CSI measurement are counted separately from CSI processing units for non-proactive CSI measurement.
The network entity of claim 11, wherein the one or more processors are configured to:

transmit the CSI request; and

receive a CSI report based at least in part on transmitting the CSI request.
A method of wireless communication performed by a user equipment (UE) , comprising:

receiving a configuration for proactive channel state information (CSI) measurement;

generating, based at least in part on the configuration, a CSI report independently of receiving the CSI request;

receiving the CSI request; and

transmitting the CSI report based at least in part on receiving the CSI request.
The method of claim 20, further comprising updating the CSI report based at least in part on an updated measurement after generating the CSI report and before transmitting the CSI report.
The method of claim 20, wherein generating the CSI report includes generating a respective CSI report for each candidate cell of a plurality of candidate cells.
The method of claim 20, further comprising transmitting a UE capability for proactive CSI measurement.
A method of wireless communication performed by a network entity, comprising:

generating a configuration for proactive channel state information (CSI) measurement that is independent of a CSI request; and

transmitting the configuration.
The method of claim 24, further comprising receiving a UE capability for proactive CSI measurement, wherein generating the configuration includes generating the configuration based at least in part on the UE capability.
The method of claim 25, wherein the UE capability indicates a quantity of reference signals, per channel measurement set, per candidate cell, or across all candidate cells, configured for proactive measurements.
The method of claim 25, wherein the UE capability indicates a quantity of CSI reports, per candidate cell or across all candidate cells, configured for proactive measurements.
The method of claim 25, wherein the UE capability indicates one or more metrics of CSI reports that are configurable for proactive measurements.
The method of claim 25, wherein the UE capability includes a capability for CSI processing that is based at least in part on a total quantity of CSI processing units, and wherein CSI processing units for proactive CSI measurement and CSI processing units for non-proactive CSI measurement are counted toward the total quantity.
The method of claim 25, wherein the UE capability includes a capability for CSI processing that is based at least in part on a total quantity of CSI processing units, and wherein CSI processing units for proactive CSI measurement are counted separately from CSI processing units for non-proactive CSI measurement.