WO2025227279A1

WO2025227279A1 - Lower layer triggered mobility report configuration

Info

Publication number: WO2025227279A1
Application number: PCT/CN2024/090315
Authority: WO
Inventors: Fang Yuan; Wooseok Nam; Doohyun SUNG; Jelena Damnjanovic; Yan Zhou
Original assignee: Qualcomm Inc
Current assignee: Qualcomm Inc
Priority date: 2024-04-28
Filing date: 2024-04-28
Publication date: 2025-11-06
Anticipated expiration: 2026-10-28

Abstract

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a lower layer triggered mobility (LTM) channel state information (CSI) report configuration associated with non-zero power (NZP) CSI reference signals (CSI-RSs) in LTM candidate cells. The UE may transmit, based at least in part on the LTM CSI configuration, an LTM CSI report associated with one or more CSI resource settings that are each associated with one or more of the NZP CSI-RSs. Numerous other aspects are described.

Description

LOWER LAYER TRIGGERED MOBILITY REPORT CONFIGURATION

FIELD OF THE DISCLOSURE

Aspects of the present disclosure generally relate to wireless communication and specifically relate to techniques, apparatuses, and methods for configuring lower layer triggered mobility reports.

BACKGROUND

Wireless communication systems are widely deployed to provide various services that may include carrying voice, text, messaging, video, data, and/or other traffic. The services may include unicast, multicast, and/or broadcast services, among other examples. Typical wireless communication systems may employ multiple-access radio access technologies (RATs) capable of supporting communication with multiple users by sharing available system resources (for example, time domain resources, frequency domain resources, spatial domain resources, and/or device transmit power, among other examples) . Examples of such multiple-access RATs include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single-carrier frequency division multiple access (SC-FDMA) systems, and time division synchronous code division multiple access (TD-SCDMA) systems.

The above multiple-access RATs have been adopted in various telecommunication standards to provide common protocols that enable different wireless communication devices to communicate on a municipal, national, regional, or global level. An example telecommunication standard is New Radio (NR) . NR, which may also be referred to as 5G, is part of a continuous mobile broadband evolution promulgated by the Third Generation Partnership Project (3GPP) . NR (and other mobile broadband evolutions beyond NR) may be designed to better support Internet of things (IoT) and reduced capability device deployments, industrial connectivity, millimeter wave (mmWave) expansion, licensed and unlicensed spectrum access, non-terrestrial network (NTN) deployment, sidelink and other device-to-device direct communication technologies (for example, cellular vehicle-to-everything (CV2X) communication) , massive multiple-input multiple-output (MIMO) , disaggregated network architectures and network topology expansions, multiple-subscriber implementations, high-precision positioning, and/or radio frequency (RF) sensing, among other examples. As the demand for mobile broadband access continues to increase, further improvements in NR may be implemented, and other radio access technologies such as 6G may be introduced, to further advance mobile broadband evolution.

SUMMARY

Some aspects described herein relate to a method of wireless communication performed by a user equipment (UE) . The method may include receiving a lower layer triggered mobility (LTM) channel state information (CSI) report configuration associated with non-zero power (NZP) CSI reference signals (CSI-RSs) in LTM candidate cells. The method may include transmitting, based at least in part on the LTM CSI configuration, an LTM CSI report associated with one or more CSI resource settings that are each associated with one or more of the NZP CSI-RSs.

Some aspects described herein relate to a method of wireless communication performed by a UE. The method may include receiving a configuration, for an aperiodic CSI-RS set associated with a Layer 1 (L1) CSI report for an LTM candidate cell, and an indication of a time offset between triggering signaling of a serving cell and transmission of the aperiodic CSI-RS set in the LTM candidate cell. The method may include transmitting the L1 CSI report based at least in part on the configuration.

Some aspects described herein relate to an apparatus for wireless communication at a UE. The apparatus may include one or more memories and one or more processors coupled to the one or more memories. The one or more processors may be individually or collectively configured to receive an LTM CSI report configuration associated with NZP CSI-RSs in LTM candidate cells. The one or more processors may be individually or collectively configured to transmit, based at least in part on the LTM CSI configuration, an LTM CSI report associated with one or more CSI resource settings that are each associated with one or more of the NZP CSI-RSs.

Some aspects described herein relate to an apparatus for wireless communication at a UE. The apparatus may include one or more memories and one or more processors coupled to the one or more memories. The one or more processors may be configured to receive a configuration, for an aperiodic CSI-RS set associated with an L1 CSI report for an LTM candidate cell, and an indication of a time offset between triggering signaling of a serving cell and transmission of the aperiodic CSI-RS set in the LTM candidate cell. The one or more processors may be configured to transmit the L1 CSI report based at least in part on 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 an LTM CSI report configuration associated with NZP CSI-RSs in LTM candidate cells. The set of instructions, when executed by one or more processors of the UE, may cause the UE to transmit, based at least in part on the LTM CSI configuration, an LTM CSI report associated with one or more CSI resource settings that are each associated with one or more of the NZP CSI-RSs.

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 an aperiodic CSI-RS set associated with an L1 CSI report for an LTM candidate cell, and an indication of a time offset between triggering signaling of a serving cell and transmission of the aperiodic CSI-RS set in the LTM candidate cell. The set of instructions, when executed by one or more processors of the UE, may cause the UE to transmit the L1 CSI report based at least in part on the configuration.

Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for receiving an LTM CSI report configuration associated with NZP CSI-RSs in LTM candidate cells. The apparatus may include means for transmitting, based at least in part on the LTM CSI configuration, an LTM CSI report associated with one or more CSI resource settings that are each associated with one or more of the NZP CSI-RSs.

Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for receiving a configuration, for an aperiodic CSI-RS set associated with an L1 CSI report for an LTM candidate cell, and an indication of a time offset between triggering signaling of a serving cell and transmission of the aperiodic CSI-RS set in the LTM candidate cell. The apparatus may include means for transmitting the L1 CSI report based at least in part on the configuration.

Aspects of the present disclosure may generally be implemented by or as a method, apparatus, system, computer program product, non-transitory computer-readable medium, user equipment, base station, network node, network entity, wireless communication device, and/or processing system as substantially described with reference to, and as illustrated by, the specification and accompanying drawings.

The foregoing paragraphs of this section have broadly summarized some aspects of the present disclosure. These and additional aspects and associated advantages will be described hereinafter. The disclosed aspects may be used as a basis for modifying or designing other aspects for carrying out the same or similar purposes of the present disclosure. Such equivalent aspects do not depart from the scope of the appended claims. Characteristics of the aspects 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 drawings.

BRIEF DESCRIPTION OF THE DRAWINGS

The appended drawings illustrate some aspects of the present disclosure, but are not limiting of the scope of the present disclosure because the description may enable other aspects. Each of the drawings is provided for purposes of illustration and description, and not as a definition of the limits of the claims. The same or similar reference numbers in different drawings may identify the same or similar elements.

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

Fig. 2 is a diagram illustrating an example network node in communication with an example 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 examples of Layer 1 and/or Layer 2 inter-cell mobility, in accordance with the present disclosure.

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

Fig. 6 is a diagram illustrating an example associated with selecting UE-initiated beam reports for a multiplexed beam report, in accordance with the present disclosure.

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

Fig. 8 is a diagram illustrating an example of CSI report configurations, in accordance with the present disclosure.

Fig. 9 is a diagram illustrating an example of CSI report configurations, in accordance with the present disclosure.

Fig. 10 is a diagram illustrating an example of a time offset for a CSI report, in accordance with the present disclosure.

Fig. 11 is a diagram illustrating an example process performed, for example, at a UE or an apparatus of a UE, in accordance with the present disclosure.

Fig. 12 is a diagram illustrating an example process performed, for example, at a UE or an apparatus of a UE, in accordance with the present disclosure.

Fig. 13 is a diagram illustrating an example process performed, for example, at a network node or an apparatus of a network node, in accordance with the present disclosure.

Fig. 14 is a diagram illustrating an example process performed, for example, at a network node or an apparatus of a network node, in accordance with the present disclosure.

Fig. 15 is a diagram of an example apparatus for wireless communication, in accordance with the present disclosure.

Fig. 16 is a diagram of an example apparatus for wireless communication, in accordance with the present disclosure.

DETAILED DESCRIPTION

Various aspects of the present disclosure are described hereinafter with reference to the accompanying drawings. However, aspects of the present disclosure may be embodied in many different forms and is not to be construed as limited to any specific aspect illustrated by or described with reference to an accompanying drawing or otherwise presented in 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 may appreciate that the scope of the disclosure is intended to cover any aspect of the disclosure disclosed herein, whether implemented independently of or in combination with any other aspect of the disclosure. For example, an apparatus may be implemented or a method may be practiced using various combinations or quantities of the aspects set forth herein. In addition, the scope of the disclosure is intended to cover an apparatus having, or a method that is practiced using, other structures and/or functionalities in addition to or other than the structures and/or functionalities with which various aspects of the disclosure set forth herein may be practiced. 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 methods, operations, apparatuses, and techniques. These methods, operations, 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, or algorithms (collectively referred to as “elements” ) . These elements may be implemented using hardware, software, or a combination of hardware and software. Whether such elements are implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system.

A user equipment (UE) may receive and measure a reference signal, such as a channel state information (CSI) reference signal (CSI-RS) , and then provide a beam report (CSI report) . A network node may use the beam report for scheduling communications. In lower layer (e.g., Layer 1 (L1) and/or Layer 2 (L2) ) triggered mobility (LTM) scenarios, the UE may collect L1 measurements for an LTM CSI report. In some aspects, a UE may initiate the LTM CSI report. The LTM CSI report may be based on L1 measurements and/or may be for LTM candidate cells. However, potential configurations for L1 CSI reports and LTM CSI reports may be insufficient (e.g., do not define different combinations of CSI resource settings and CSI resource sets associated with one or more LTM candidate cells) and may lead to inefficiencies that do not maximize throughput, waste signaling resources, and increase latency.

Various aspects relate generally to CSI reports in wireless communications. Some aspects more specifically relate to a UE being configured to use CSI-RS resources from LTM candidate cells for an LTM CSI report. The UE may receive a CSI report configuration for non-zero power (NZP) CSI-RSs that are from one or more LTM candidate cells. The UE may transmit an LTM CSI report that is associated with one or more CSI resource settings, where each CSI resource setting is associated with one or more NZP CSI-RSs. For example, the CSI report configuration may indicate multiple CSI resource settings, where each CSI resource setting is for a set of NZP CSI-RSs from a single LTM candidate cell. In another example, the CSI report configuration may indicate a single CSI resource setting for multiple NZP CSI-RSs from different LTM candidate cells.

Particular aspects of the subject matter described in this disclosure can be implemented to realize one or more of the following potential advantages. By receiving a CSI report configuration for one or more LTM candidate cells that includes how CSI resource settings are configured for NZP CSI-RSs, the UE may have more information (e.g., defined CSI resource settings and CSI resources) for how to provide an accurate LTM CSI report. A network node may use an accurate LTM CSI report for scheduling and configuring the UE to improve communications that increase throughput, conserve signaling resources, and reduce latency.

In some aspects, a UE may be configured with an aperiodic CSI-RS set for an L1 CSI report in LTM. The UE may receive an indication of a time offset between a trigger signal in a serving cell for the L1 CSI report and transmission of the CSI-RS set from an LTM candidate cell. A network node may transmit the trigger signal, and the UE may receive the CSI-RS set the time offset after the trigger signal. The UE may measure the CSI-RSs of the CSI-RS set and transmit an LTM CSI report.

By indicating a time offset for the aperiodic CSI-RS set, the UE may have information for when to measure the aperiodic CSI-RS set, in order to provide an accurate LTM CSI report that can result in increased throughput and reduced latency.

Multiple-access radio access technologies (RATs) have been adopted in various telecommunication standards to provide common protocols that enable wireless communication devices to communicate on a municipal, enterprise, national, regional, or global level. For example, 5G New Radio (NR) is part of a continuous mobile broadband evolution promulgated by the Third Generation Partnership Project (3GPP) . 5G NR supports various technologies and use cases including enhanced mobile broadband (eMBB) , ultra-reliable low-latency communication (URLLC) , massive machine-type communication (mMTC) , millimeter wave (mmWave) technology, beamforming, network slicing, edge computing, Internet of Things (IoT) connectivity and management, and network function virtualization (NFV) .

As the demand for broadband access increases and as technologies supported by wireless communication networks evolve, further technological improvements may be adopted in or implemented for 5G NR or future RATs, such as 6G, to further advance the evolution of wireless communication for a wide variety of existing and new use cases and applications. Such technological improvements may be associated with new frequency band expansion, licensed and unlicensed spectrum access, overlapping spectrum use, small cell deployments, non-terrestrial network (NTN) deployments, disaggregated network architectures and network topology expansion, device aggregation, advanced duplex communication, sidelink and other device-to-device direct communication, IoT (including passive or ambient IoT) networks, reduced capability (RedCap) UE functionality, industrial connectivity, multiple-subscriber implementations, high-precision positioning, radio frequency (RF) sensing, and/or artificial intelligence or machine learning (AI/ML) , among other examples. These technological improvements may support use cases such as wireless backhauls, wireless data centers, extended reality (XR) and metaverse applications, meta services for supporting vehicle connectivity, holographic and mixed reality communication, autonomous and collaborative robots, vehicle platooning and cooperative maneuvering, sensing networks, gesture monitoring, human-brain interfacing, digital twin applications, asset management, and universal coverage applications using non-terrestrial and/or aerial platforms, among other examples. The methods, operations, apparatuses, and techniques described herein may enable one or more of the foregoing technologies and/or support one or more of the foregoing use cases.

Fig. 1 is a diagram illustrating an example of a wireless communication network 100 in accordance with the present disclosure. The wireless communication network 100 may be or may include elements of a 5G (or NR) network or a 6G network, among other examples. The wireless communication network 100 may include multiple network nodes 110, shown as a network node (NN) 110a, a network node 110b, a network node 110c, and a network node 110d. The network nodes 110 may support communications with multiple UEs 120, shown as a UE 120a, a UE 120b, a UE 120c, a UE 120d, and a UE 120e.

The network nodes 110 and the UEs 120 of the wireless communication network 100 may communicate using the electromagnetic spectrum, which may be subdivided by frequency or wavelength into various classes, bands, carriers, and/or channels. For example, devices of the wireless communication network 100 may communicate using one or more operating bands. In some aspects, multiple wireless networks 100 may be deployed in a given geographic area. Each wireless communication network 100 may support a particular RAT (which may also be referred to as an air interface) and may operate on one or more carrier frequencies in one or more frequency ranges. Examples of RATs include a 4G RAT, a 5G/NR RAT, and/or a 6G RAT, among other examples. In some examples, when multiple RATs are deployed in a given geographic area, each RAT in the geographic area may operate on different frequencies to avoid interference with one another.

Various operating bands have been defined as frequency range designations FR1 (410 MHz through 7.125 GHz) , FR2 (24.25 GHz through 52.6 GHz) , FR3 (7.125 GHz through 24.25 GHz) , FR4a or FR4-1 (52.6 GHz through 71 GHz) , FR4 (52.6 GHz through 114.25 GHz) , and FR5 (114.25 GHz through 300 GHz) . Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to (interchangeably) as a “Sub-6 GHz” band in some documents and articles. Similarly, FR2 is often referred to (interchangeably) as a “millimeter wave” band in some documents and articles, despite being different than the extremely high frequency (EHF) band (30 GHz through 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, which include FR3. Frequency bands falling within FR3 may inherit FR1 characteristics or FR2 characteristics, and thus may effectively extend features of FR1 or FR2 into mid-band frequencies. Thus, “sub-6 GHz, ” if used herein, may broadly refer to frequencies that are less than 6 GHz, that are within FR1, and/or that are included in mid-band frequencies. Similarly, the term “millimeter wave, ” if used herein, may broadly refer to frequencies that are included in mid-band frequencies, that are within FR2, FR4, FR4-aor FR4-1, or FR5, and/or that are within the EHF band. Higher frequency bands may extend 5G NR operation, 6G operation, and/or other RATs beyond 52.6 GHz. For example, each of FR4a, FR4-1, FR4, and FR5 falls within the EHF band. In some examples, the wireless communication network 100 may implement dynamic spectrum sharing (DSS) , in which multiple RATs (for example, 4G/Long Term Evolution (LTE) and 5G/NR) are implemented with dynamic bandwidth allocation (for example, based on user demand) in a single frequency band. It is contemplated that the frequencies included in these operating bands (for example, FR1, FR2, FR3, FR4, FR4-a, FR4-1, and/or FR5) may be modified, and techniques described herein may be applicable to those modified frequency ranges.

A network node 110 may include one or more devices, components, or systems that enable communication between a UE 120 and one or more devices, components, or systems of the wireless communication network 100. A network node 110 may be, may include, or may also be referred to as an NR network node, a 5G network node, a 6G network node, a Node B, an eNB, a gNB, an access point (AP) , a transmit receive point (TRP) , a mobility element, a core, a network node, a network element, a network equipment, and/or another type of device, component, or system included in a radio access network (RAN) .

A network node 110 may be implemented as a single physical node (for example, a single physical structure) or may be implemented as two or more physical nodes (for example, two or more distinct physical structures) . For example, a network node 110 may be a device or system that implements part of a radio protocol stack, a device or system that implements a full radio protocol stack (such as a full gNB protocol stack) , or a collection of devices or systems that collectively implement the full radio protocol stack. For example, and as shown, a network node 110 may be an aggregated network node (having an aggregated architecture) , meaning that the network node 110 may implement a full radio protocol stack that is physically and logically integrated within a single node (for example, a single physical structure) in the wireless communication network 100. For example, an aggregated network node 110 may consist of a single standalone base station or a single TRP that uses a full radio protocol stack to enable or facilitate communication between a UE 120 and a core network of the wireless communication network 100.

Alternatively, and as also shown, a network node 110 may be a disaggregated network node (sometimes referred to as a disaggregated base station) , meaning that the network node 110 may implement a radio protocol stack that is physically distributed and/or logically distributed among two or more nodes in the same geographic location or in different geographic locations. For example, a disaggregated network node may have a disaggregated architecture. In some deployments, disaggregated network nodes 110 may be used in an integrated access and backhaul (IAB) network, in an open radio access network (O-RAN) (such as a network configuration in compliance with the O-RAN Alliance) , or in a virtualized radio access network (vRAN) , also known as a cloud radio access network (C-RAN) , to facilitate scaling by separating base station functionality into multiple units that can be individually deployed.

The network nodes 110 of the wireless communication network 100 may include one or more central units (CUs) , one or more distributed units (DUs) , and/or one or more radio units (RUs) . A CU may host one or more higher layer control functions, such as radio resource control (RRC) functions, packet data convergence protocol (PDCP) functions, and/or service data adaptation protocol (SDAP) functions, among other examples. A DU may host one or more of a radio link control (RLC) layer, a medium access control (MAC) layer, and/or one or more higher physical (PHY) layers depending, at least in part, on a functional split, such as a functional split defined by the 3GPP. In some examples, a DU also may host one or more lower PHY layer functions, such as a fast Fourier transform (FFT) , an inverse FFT (iFFT) , beamforming, physical random access channel (PRACH) extraction and filtering, and/or scheduling of resources for one or more UEs 120, among other examples. An RU may host RF processing functions or lower PHY layer functions, such as an FFT, an iFFT, beamforming, or PRACH extraction and filtering, among other examples, according to a functional split, such as a lower layer functional split. In such an architecture, each RU can be operated to handle over the air (OTA) communication with one or more UEs 120.

In some aspects, a single network node 110 may include a combination of one or more CUs, one or more DUs, and/or one or more RUs. Additionally or alternatively, a network node 110 may include one or more Near-Real Time (Near-RT) RAN Intelligent Controllers (RICs) and/or one or more Non-Real Time (Non-RT) RICs. In some examples, a CU, a DU, and/or an RU may be implemented as a virtual unit, such as a virtual central unit (VCU) , a virtual distributed unit (VDU) , or a virtual radio unit (VRU) , among other examples. A virtual unit may be implemented as a virtual network function, such as associated with a cloud deployment.

Some network nodes 110 (for example, a base station, an RU, or a TRP) 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 or to a network node 110 itself, depending on the context in which the term is used. A network node 110 may support one or multiple (for example, three) cells. In some examples, a network node 110 may provide communication coverage for a macro cell, a pico cell, a femto cell, or another type of cell. A macro cell may cover a relatively large geographic area (for example, 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 (for example, a home) and may allow restricted access by UEs 120 having association with the femto cell (for example, 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 some examples, a cell may not necessarily be stationary. For example, the geographic area of the cell may move according to the location of an associated mobile network node 110 (for example, a train, a satellite base station, an unmanned aerial vehicle, or an NTN network node) .

The wireless communication 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, aggregated network nodes, and/or disaggregated network nodes, among other examples. In the example shown in Fig. 1, the network node 110a may be a macro network node for a macro cell 130a, the network node 110b may be a pico network node for a pico cell 130b, and the network node 110c may be a femto network node for a femto cell 130c. Various different types of network nodes 110 may generally transmit at different power levels, serve different coverage areas, and/or have different impacts on interference in the wireless communication network 100 than other types of network nodes 110. For example, macro network nodes may have a high transmit power level (for example, 5 to 40 watts) , whereas pico network nodes, femto network nodes, and relay network nodes may have lower transmit power levels (for example, 0.1 to 2 watts) .

In some examples, a network node 110 may be, may include, or may operate as an RU, a TRP, or a base station that communicates with one or more UEs 120 via a radio access link (which may be referred to as a “Uu” link) . The radio access link may include a downlink and an uplink. “Downlink” (or “DL” ) refers to a communication direction from a network node 110 to a UE 120, and “uplink” (or “UL” ) refers to a communication direction from a UE 120 to a network node 110. Downlink channels may include one or more control channels and one or more data channels. A downlink control channel may be used to transmit downlink control information (DCI) (for example, scheduling information, reference signals, and/or configuration information) from a network node 110 to a UE 120. A downlink data channel may be used to transmit downlink data (for example, user data associated with a UE 120) from a network node 110 to a UE 120. Downlink control channels may include one or more physical downlink control channels (PDCCHs) , and downlink data channels may include one or more physical downlink shared channels (PDSCHs) . Uplink channels may similarly include one or more control channels and one or more data channels. An uplink control channel may be used to transmit uplink control information (UCI) (for example, reference signals and/or feedback corresponding to one or more downlink transmissions) from a UE 120 to a network node 110. An uplink data channel may be used to transmit uplink data (for example, user data associated with a UE 120) from a UE 120 to a network node 110. Uplink control channels may include one or more physical uplink control channels (PUCCHs) , and uplink data channels may include one or more physical uplink shared channels (PUSCHs) . The downlink and the uplink may each include a set of resources on which the network node 110 and the UE 120 may communicate.

Downlink and uplink resources may include time domain resources (frames, subframes, slots, and/or symbols) , frequency domain resources (frequency bands, component carriers, subcarriers, resource blocks, and/or resource elements) , and/or spatial domain resources (particular transmit directions and/or beam parameters) . Frequency domain resources of some bands may be subdivided into bandwidth parts (BWPs) . A BWP may be a continuous block of frequency domain resources (for example, a continuous block of resource blocks) that are allocated for one or more UEs 120. A UE 120 may be configured with both an uplink BWP and a downlink BWP (where the uplink BWP and the downlink BWP may be the same BWP or different BWPs) . A BWP may be dynamically configured (for example, by a network node 110 transmitting a DCI configuration to the one or more UEs 120) and/or reconfigured, which means that a BWP can be adjusted in real-time (or near-real-time) based on changing network conditions in the wireless communication network 100 and/or based on the specific requirements of the one or more UEs 120. This enables more efficient use of the available frequency domain resources in the wireless communication network 100 because fewer frequency domain resources may be allocated to a BWP for a UE 120 (which may reduce the quantity of frequency domain resources that a UE 120 is required to monitor) , leaving more frequency domain resources to be spread across multiple UEs 120. Thus, BWPs may also assist in the implementation of lower-capability UEs 120 by facilitating the configuration of smaller bandwidths for communication by such UEs 120.

As described above, in some aspects, the wireless communication network 100 may be, may include, or may be included in, an IAB network. In an IAB network, at least one network node 110 is an anchor network node that communicates with a core network. An anchor network node 110 may also be referred to as an IAB donor (or “IAB-donor” ) . The anchor network node 110 may connect to the core network via a wired backhaul link. For example, an Ng interface of the anchor network node 110 may terminate at the core network. Additionally or alternatively, an anchor network node 110 may connect to one or more devices of the core network that provide a core access and mobility management function (AMF) . An IAB network also generally includes multiple non-anchor network nodes 110, which may also be referred to as relay network nodes or simply as IAB nodes (or “IAB-nodes” ) . Each non-anchor network node 110 may communicate directly with the anchor network node 110 via a wireless backhaul link to access the core network, or may communicate indirectly with the anchor network node 110 via one or more other non-anchor network nodes 110 and associated wireless backhaul links that form a backhaul path to the core network. Some anchor network node 110 or other non-anchor network node 110 may also communicate directly with one or more UEs 120 via wireless access links that carry access traffic. In some examples, network resources for wireless communication (such as time resources, frequency resources, and/or spatial resources) may be shared between access links and backhaul links.

In some examples, any network node 110 that relays communications may be referred to as a relay network node, a relay station, or simply as a relay. A relay may receive a transmission of a communication from an upstream station (for example, another network node 110 or a UE 120) and transmit the communication to a downstream station (for example, a UE 120 or another network node 110) . In this case, the wireless communication network 100 may include or be referred to as a “multi-hop network. ” In the example shown in Fig. 1, the network node 110d (for example, a relay network node) may communicate with the network node 110a (for example, a macro network node) and the UE 120d in order to facilitate communication between the network node 110a and the UE 120d. Additionally or alternatively, a UE 120 may be or may operate as a relay station that can relay transmissions to or from other UEs 120. A UE 120 that relays communications may be referred to as a UE relay or a relay UE, among other examples.

The UEs 120 may be physically dispersed throughout the wireless communication network 100, and each UE 120 may be stationary or mobile. A UE 120 may be, may include, or may be included in an access terminal, another terminal, a mobile station, or a subscriber unit. A UE 120 may be, include, or be coupled with a cellular phone (for example, 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 (for example, a smart watch, smart clothing, smart glasses, a smart wristband, and/or smart jewelry, such as a smart ring or a smart bracelet) , an entertainment device (for example, a music device, a video device, and/or a satellite radio) , an XR device, a vehicular component or sensor, a smart meter or sensor, industrial manufacturing equipment, a Global Navigation Satellite System (GNSS) device (such as a Global Positioning System device or another type of positioning device) , a UE function of a network node, and/or any other suitable device or function that may communicate via a wireless medium.

A UE 120 and/or a network node 110 may include one or more chips, system-on-chips (SoCs) , chipsets, packages, or devices that individually or collectively constitute or comprise a processing system. The processing system includes processor (or “processing” ) circuitry in the form of one or multiple processors, microprocessors, processing units (such as central processing units (CPUs) , graphics processing units (GPUs) , neural processing units (NPUs) and/or digital signal processors (DSPs) ) , processing blocks, application-specific integrated circuits (ASIC) , programmable logic devices (PLDs) (such as field programmable gate arrays (FPGAs) ) , or other discrete gate or transistor logic or circuitry (all of which may be generally referred to herein individually as “processors” or collectively as “the processor” or “the processor circuitry” ) . One or more of the processors may be individually or collectively configurable or configured to perform various functions or operations described herein. A group of processors collectively configurable or configured to perform a set of functions may include a first processor configurable or configured to perform a first function of the set and a second processor configurable or configured to perform a second function of the set, or may include the group of processors all being configured or configurable to perform the set of functions.

The processing system may further include memory circuitry in the form of one or more memory devices, memory blocks, memory elements or other discrete gate or transistor logic or circuitry, each of which may include tangible storage media such as random-access memory (RAM) or read-only memory (ROM) , or combinations thereof (all of which may be generally referred to herein individually as “memories” or collectively as “the memory” or “the memory circuitry” ) . One or more of the memories may be coupled (for example, operatively coupled, communicatively coupled, electronically coupled, or electrically coupled) with one or more of the processors and may individually or collectively store processor-executable code (such as software) that, when executed by one or more of the processors, may configure one or more of the processors to perform various functions or operations described herein. Additionally or alternatively, in some examples, one or more of the processors may be preconfigured to perform various functions or operations described herein without requiring configuration by software. The processing system may further include or be coupled with one or more modems (such as a Wi-Fi (for example, IEEE compliant) modem or a cellular (for example, 3GPP 4G LTE, 5G, or 6G compliant) modem) . In some implementations, one or more processors of the processing system include or implement one or more of the modems. The processing system may further include or be coupled with multiple radios (collectively “the radio” ) , multiple RF chains, or multiple transceivers, each of which may in turn be coupled with one or more of multiple antennas. In some implementations, one or more processors of the processing system include or implement one or more of the radios, RF chains or transceivers. The UE 120 may include or may be included in a housing that houses components associated with the UE 120 including the processing system.

Some UEs 120 may be considered machine-type communication (MTC) UEs, evolved or enhanced machine-type communication (eMTC) , UEs, further enhanced eMTC (feMTC) UEs, or enhanced feMTC (efeMTC) UEs, or further evolutions thereof, all of which may be simply referred to as “MTC UEs” . An MTC UE may be, may include, or may be included in or coupled with a robot, an uncrewed aerial vehicle, a remote device, a sensor, a meter, a monitor, and/or a location tag. Some UEs 120 may be considered IoT devices and/or may be implemented as NB-IoT (narrowband IoT) devices. An IoT UE or NB-IoT device may be, may include, or may be included in or coupled with an industrial machine, an appliance, a refrigerator, a doorbell camera device, a home automation device, and/or a light fixture, among other examples. Some UEs 120 may be considered Customer Premises Equipment, which may include telecommunications devices that are installed at a customer location (such as a home or office) to enable access to a service provider's network (such as included in or in communication with the wireless communication network 100) .

Some UEs 120 may be classified according to different categories in association with different complexities and/or different capabilities. UEs 120 in a first category may facilitate massive IoT in the wireless communication network 100, and may offer low complexity and/or cost relative to UEs 120 in a second category. UEs 120 in a second category may include mission-critical IoT devices, legacy UEs, baseline UEs, high-tier UEs, advanced UEs, full-capability UEs, and/or premium UEs that are capable of URLLC, eMBB, and/or precise positioning in the wireless communication network 100, among other examples. A third category of UEs 120 may have mid-tier complexity and/or capability (for example, a capability between UEs 120 of the first category and UEs 120 of the second capability) . A UE 120 of the third category may be referred to as a reduced capacity UE ( “RedCap UE” ) , a mid-tier UE, an NR-Light UE, and/or an NR-Lite UE, among other examples. RedCap UEs may bridge a gap between the capability and complexity of NB-IoT devices and/or eMTC UEs, and mission-critical IoT devices and/or premium UEs. RedCap UEs may include, for example, wearable devices, IoT devices, industrial sensors, and/or cameras that are associated with a limited bandwidth, power capacity, and/or transmission range, among other examples. RedCap UEs may support healthcare environments, building automation, electrical distribution, process automation, transport and logistics, and/or smart city deployments, among other examples.

In some examples, two or more UEs 120 (for example, shown as UE 120a and UE 120e) may communicate directly with one another using sidelink communications (for example, without communicating by way of a network node 110 as an intermediary) . As an example, the UE 120a may directly transmit data, control information, or other signaling as a sidelink communication to the UE 120e. This is in contrast to, for example, the UE 120a first transmitting data in an UL communication to a network node 110, which then transmits the data to the UE 120e in a DL communication. In various examples, the UEs 120 may transmit and receive sidelink communications using peer-to-peer (P2P) communication protocols, device-to-device (D2D) communication protocols, vehicle-to-everything (V2X) communication protocols (which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, and/or vehicle-to-pedestrian (V2P) protocols) , and/or mesh network communication protocols. In some deployments and configurations, a network node 110 may schedule and/or allocate resources for sidelink communications between UEs 120 in the wireless communication network 100. In some other deployments and configurations, a UE 120 (instead of a network node 110) may perform, or collaborate or negotiate with one or more other UEs to perform, scheduling operations, resource selection operations, and/or other operations for sidelink communications.

In various examples, some of the network nodes 110 and the UEs 120 of the wireless communication network 100 may be configured for full-duplex operation in addition to half-duplex operation. A network node 110 or a UE 120 operating in a half-duplex mode may perform only one of transmission or reception during particular time resources, such as during particular slots, symbols, or other time periods. Half-duplex operation may involve time-division duplexing (TDD) , in which DL transmissions of the network node 110 and UL transmissions of the UE 120 do not occur in the same time resources (that is, the transmissions do not overlap in time) . In contrast, a network node 110 or a UE 120 operating in a full-duplex mode can transmit and receive communications concurrently (for example, in the same time resources) . By operating in a full-duplex mode, network nodes 110 and/or UEs 120 may generally increase the capacity of the network and the radio access link. In some examples, full-duplex operation may involve frequency-division duplexing (FDD) , in which DL transmissions of the network node 110 are performed in a first frequency band or on a first component carrier and transmissions of the UE 120 are performed in a second frequency band or on a second component carrier different than the first frequency band or the first component carrier, respectively. In some examples, full-duplex operation may be enabled for a UE 120 but not for a network node 110. For example, a UE 120 may simultaneously transmit an UL transmission to a first network node 110 and receive a DL transmission from a second network node 110 in the same time resources. In some other examples, full-duplex operation may be enabled for a network node 110 but not for a UE 120. For example, a network node 110 may simultaneously transmit a DL transmission to a first UE 120 and receive an UL transmission from a second UE 120 in the same time resources. In some other examples, full-duplex operation may be enabled for both a network node 110 and a UE 120.

In some examples, the UEs 120 and the network nodes 110 may perform MIMO communication. “MIMO” generally refers to transmitting or receiving multiple signals (such as multiple layers or multiple data streams) simultaneously over the same time and frequency resources. MIMO techniques generally exploit multipath propagation. MIMO may be implemented using various spatial processing or spatial multiplexing operations. In some examples, MIMO may support simultaneous transmission to multiple receivers, referred to as multi-user MIMO (MU-MIMO) . Some RATs may employ advanced MIMO techniques, such as mTRP operation (including redundant transmission or reception on multiple TRPs) , reciprocity in the time domain or the frequency domain, single-frequency-network (SFN) transmission, or non-coherent joint transmission (NC-JT) .

In some aspects, a UE (e.g., UE 120) may include a communication manager 140. As described in more detail elsewhere herein, the communication manager 140 may receive an LTM CSI report configuration associated with NZP CSI-RSs in LTM candidate cells. The communication manager 140 may transmit, based at least in part on the LTM CSI configuration, an LTM CSI report associated with one or more CSI resource settings, where each CSI resource setting is associated with one or more NZP CSI-RSs.

In some aspects, the communication manager 140 may receive a configuration, for an aperiodic CSI-RS set associated with an L1 CSI report for an LTM candidate cell, and an indication of a time offset between triggering signaling of a serving cell and transmission of the aperiodic CSI-RS set in the LTM candidate cell. The communication manager 140 may transmit the L1 CSI report based at least in part on the configuration. Additionally, or alternatively, the communication manager 140 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 network node 110 in communication with an example UE 120 in a wireless network in accordance with the present disclosure.

As shown in Fig. 2, the network node 110 may include a data source 212, a transmit processor 214, a transmit (TX) MIMO processor 216, a set of modems 232 (shown as 232a through 232t, where t ≥ 1) , a set of antennas 234 (shown as 234a through 234v, where v ≥ 1) , a MIMO detector 236, a receive processor 238, a data sink 239, a controller/processor 240, a memory 242, a communication unit 244, a scheduler 246, and/or a communication manager 150, among other examples. In some configurations, one or a combination of the antenna (s) 234, the modem (s) 232, the MIMO detector 236, the receive processor 238, the transmit processor 214, and/or the TX MIMO processor 216 may be included in a transceiver of the network node 110. The transceiver may be under control of and used by one or more processors, such as the controller/processor 240, and in some aspects in conjunction with processor-readable code stored in the memory 242, to perform aspects of the methods, processes, and/or operations described herein. In some aspects, the network node 110 may include one or more interfaces, communication components, and/or other components that facilitate communication with the UE 120 or another network node.

The terms “processor, ” “controller, ” or “controller/processor” may refer to one or more controllers and/or one or more processors. For example, reference to “a/the processor, ” “a/the controller/processor, ” or the like (in the singular) should be understood to refer to any one or more of the processors described in connection with Fig. 2, such as a single processor or a combination of multiple different processors. Reference to “one or more processors” should be understood to refer to any one or more of the processors described in connection with Fig. 2. For example, one or more processors of the network node 110 may include transmit processor 214, TX MIMO processor 216, MIMO detector 236, receive processor 238, and/or controller/processor 240. Similarly, one or more processors of the UE 120 may include MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, and/or controller/processor 280.

In some aspects, a single processor may perform all of the operations described as being performed by the one or more processors. In some aspects, a first set of (one or more) processors of the one or more processors may perform a first operation described as being performed by the one or more processors, and a second set of (one or more) processors of the one or more processors may perform a second operation described as being performed by the one or more processors. The first set of processors and the second set of processors may be the same set of processors or may be different sets of processors. Reference to “one or more memories” should be understood to refer to any one or more memories of a corresponding device, such as the memory described in connection with Fig. 2. For example, operation described as being performed by one or more memories can be performed by the same subset of the one or more memories or different subsets of the one or more memories.

For downlink communication from the network node 110 to the UE 120, the transmit processor 214 may receive data ( “downlink data” ) intended for the UE 120 (or a set of UEs that includes the UE 120) from the data source 212 (such as a data pipeline or a data queue) . In some examples, the transmit processor 214 may select one or more MCSs for the UE 120 in accordance with one or more channel quality indicators (CQIs) received from the UE 120. The network node 110 may process the data (for example, including encoding the data) for transmission to the UE 120 on a downlink in accordance with the MCS (s) selected for the UE 120 to generate data symbols. The transmit processor 214 may process system information (for example, semi-static resource partitioning information (SRPI) ) and/or control information (for example, CQI requests, grants, and/or upper layer signaling) and provide overhead symbols and/or control symbols. The transmit processor 214 may generate reference symbols for reference signals (for example, a cell-specific reference signal (CRS) , a demodulation reference signal (DMRS) , or a CSI-RS) and/or synchronization signals (for example, a primary synchronization signal (PSS) or a secondary synchronization signals (SSS) ) .

The TX MIMO processor 216 may perform spatial processing (for example, 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 (for example, T output symbol streams) to the set of modems 232. For example, each output symbol stream may be provided to a respective modulator component (shown as MOD) of a modem 232. Each modem 232 may use the respective modulator component to process (for example, to modulate) a respective output symbol stream (for example, for orthogonal frequency division multiplexing (OFDM) ) to obtain an output sample stream. Each modem 232 may further use the respective modulator component to process (for example, convert to analog, amplify, filter, and/or upconvert) the output sample stream to obtain a time domain downlink signal. The modems 232a through 232t may together transmit a set of downlink signals (for example, T downlink signals) via the corresponding set of antennas 234.

A downlink signal may include a DCI communication, a MAC control element (MAC CE) communication, an RRC communication, a downlink reference signal, or another type of downlink communication. Downlink signals may be transmitted on a PDCCH, a PDSCH, and/or on another downlink channel. A downlink signal may carry one or more transport blocks (TBs) of data. A TB may be a unit of data that is transmitted over an air interface in the wireless communication network 100. A data stream (for example, from the data source 212) may be encoded into multiple TBs for transmission over the air interface. The quantity of TBs used to carry the data associated with a particular data stream may be associated with a TB size common to the multiple TBs. The TB size may be based on or otherwise associated with radio channel conditions of the air interface, the MCS used for encoding the data, the downlink resources allocated for transmitting the data, and/or another parameter. In general, the larger the TB size, the greater the amount of data that can be transmitted in a single transmission, which reduces signaling overhead. However, larger TB sizes may be more prone to transmission and/or reception errors than smaller TB sizes, but such errors may be mitigated by more robust error correction techniques.

For uplink communication from the UE 120 to the network node 110, uplink signals from the UE 120 may be received by an antenna 234, may be processed by a modem 232 (for example, a demodulator component, shown as DEMOD, of a modem 232) , may be detected by the MIMO detector 236 (for example, a receive (Rx) MIMO processor) if applicable, and/or may be further processed by the receive processor 238 to obtain decoded data and/or control information. The receive processor 238 may provide the decoded data to a data sink 239 (which may be a data pipeline, a data queue, and/or another type of data sink) and provide the decoded control information to a processor, such as the controller/processor 240.

The network node 110 may use the scheduler 246 to schedule one or more UEs 120 for downlink or uplink communications. In some aspects, the scheduler 246 may use DCI to dynamically schedule DL transmissions to the UE 120 and/or UL transmissions from the UE 120. In some examples, the scheduler 246 may allocate recurring time domain resources and/or frequency domain resources that the UE 120 may use to transmit and/or receive communications using an RRC configuration (for example, a semi-static configuration) , for example, to perform semi-persistent scheduling (SPS) or to configure a configured grant (CG) for the UE 120.

One or more of the transmit processor 214, the TX MIMO processor 216, the modem 232, the antenna 234, the MIMO detector 236, the receive processor 238, and/or the controller/processor 240 may be included in an RF chain of the network node 110. An RF chain may include one or more filters, mixers, oscillators, amplifiers, analog-to-digital converters (ADCs) , and/or other devices that convert between an analog signal (such as for transmission or reception via an air interface) and a digital signal (such as for processing by one or more processors of the network node 110) . In some aspects, the RF chain may be or may be included in a transceiver of the network node 110.

In some examples, the network node 110 may use the communication unit 244 to communicate with a core network and/or with other network nodes. The communication unit 244 may support wired and/or wireless communication protocols and/or connections, such as Ethernet, optical fiber, common public radio interface (CPRI) , and/or a wired or wireless backhaul, among other examples. The network node 110 may use the communication unit 244 to transmit and/or receive data associated with the UE 120 or to perform network control signaling, among other examples. The communication unit 244 may include a transceiver and/or an interface, such as a network interface.

The UE 120 may include a set of antennas 252 (shown as antennas 252a through 252r, where r ≥ 1) , a set of modems 254 (shown as modems 254a through 254u, where u ≥ 1) , a MIMO detector 256, a receive processor 258, a data sink 260, a data source 262, a transmit processor 264, a TX MIMO processor 266, a controller/processor 280, a memory 282, and/or a communication manager 140, among other examples. One or more of the components of the UE 120 may be included in a housing 284. In some aspects, one or a combination of the antenna (s) 252, the modem (s) 254, the MIMO detector 256, the receive processor 258, the transmit processor 264, or the TX MIMO processor 266 may be included in a transceiver that is included in the UE 120. The transceiver may be under control of and used by one or more processors, such as the controller/processor 280, and in some aspects in conjunction with processor-readable code stored in the memory 282, to perform aspects of the methods, processes, or operations described herein. In some aspects, the UE 120 may include another interface, another communication component, and/or another component that facilitates communication with the network node 110 and/or another UE 120.

For downlink communication from the network node 110 to the UE 120, the set of antennas 252 may receive the downlink communications or signals from the network node 110 and may provide a set of received downlink signals (for example, R received signals) to the set of modems 254. For example, each received signal may be provided to a respective demodulator component (shown as DEMOD) of a modem 254. Each modem 254 may use the respective demodulator component to condition (for example, filter, amplify, downconvert, and/or digitize) a received signal to obtain input samples. Each modem 254 may use the respective demodulator component to further demodulate or process the input samples (for example, for OFDM) to obtain received symbols. The MIMO detector 256 may obtain received symbols from the set of modems 254, may perform MIMO detection on the received symbols if applicable, and may provide detected symbols. The receive processor 258 may process (for example, decode) the detected symbols, may provide decoded data for the UE 120 to the data sink 260 (which may include a data pipeline, a data queue, and/or an application executed on the UE 120) , and may provide decoded control information and system information to the controller/processor 280.

For uplink communication from the UE 120 to the network node 110, the transmit processor 264 may receive and process data ( “uplink data” ) from a data source 262 (such as a data pipeline, a data queue, and/or an application executed on the UE 120) and control information from the controller/processor 280. The control information may include one or more parameters, feedback, one or more signal measurements, and/or other types of control information. In some aspects, the receive processor 258 and/or the controller/processor 280 may determine, for a received signal (such as received from the network node 110 or another UE) , one or more parameters relating to transmission of the uplink communication. The one or more parameters may include a reference signal received power (RSRP) parameter, a received signal strength indicator (RSSI) parameter, a reference signal received quality (RSRQ) parameter, a CQI parameter, or a transmit power control (TPC) parameter, among other examples. The control information may include an indication of the RSRP parameter, the RSSI parameter, the RSRQ parameter, the CQI parameter, the TPC parameter, and/or another parameter. The control information may facilitate parameter selection and/or scheduling for the UE 120 by the network node 110.

The transmit processor 264 may generate reference symbols for one or more reference signals, such as an uplink DMRS, an uplink sounding reference signal (SRS) , and/or another type of reference signal. The symbols from the transmit processor 264 may be precoded by the TX MIMO processor 266, if applicable, and further processed by the set of modems 254 (for example, for DFT-s-OFDM or CP-OFDM) . The TX MIMO processor 266 may perform spatial processing (for example, 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 (for example, U output symbol streams) to the set of modems 254. For example, each output symbol stream may be provided to a respective modulator component (shown as MOD) of a modem 254. Each modem 254 may use the respective modulator component to process (for example, to modulate) a respective output symbol stream (for example, for OFDM) to obtain an output sample stream. Each modem 254 may further use the respective modulator component to process (for example, convert to analog, amplify, filter, and/or upconvert) the output sample stream to obtain an uplink signal.

The modems 254a through 254u may transmit a set of uplink signals (for example, R uplink signals or U uplink symbols) via the corresponding set of antennas 252. An uplink signal may include a UCI communication, a MAC CE communication, an RRC communication, or another type of uplink communication. Uplink signals may be transmitted on a PUSCH, a PUCCH, and/or another type of uplink channel. An uplink signal may carry one or more TBs of data. Sidelink data and control transmissions (that is, transmissions directly between two or more UEs 120) may generally use similar techniques as were described for uplink data and control transmission, and may use sidelink-specific channels such as a physical sidelink shared channel (PSSCH) , a physical sidelink control channel (PSCCH) , and/or a physical sidelink feedback channel (PSFCH) .

One or more antennas of the set of antennas 252 or the set of antennas 234 may include, or may be included within, one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, or one or more antenna arrays, among other examples. An antenna panel, an antenna group, a set of antenna elements, 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, or one or more antenna elements coupled with one or more transmission or reception components, such as one or more components of Fig. 2. As used herein, “antenna” can refer to one or more antennas, one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, or one or more antenna arrays. “Antenna panel” can refer to a group of antennas (such as antenna elements) arranged in an array or panel, which may facilitate beamforming by manipulating parameters of the group of antennas. “Antenna module” may refer to circuitry including one or more antennas, which may also include one or more other components (such as filters, amplifiers, or processors) associated with integrating the antenna module into a wireless communication device.

In some examples, each of the antenna elements of an antenna 234 or an antenna 252 may include one or more sub-elements for radiating or receiving radio frequency signals. For example, a single antenna element may include a first sub-element cross-polarized with a second sub-element that can be used to independently transmit cross-polarized signals. The antenna elements may include patch antennas, dipole antennas, and/or other types of antennas arranged in a linear pattern, a two-dimensional pattern, or another pattern. A spacing between antenna elements may be such that signals with a desired wavelength transmitted separately by the antenna elements may interact or interfere constructively and destructively along various directions (such as to form a desired beam) . For example, given an expected range of wavelengths or frequencies, the spacing may provide a quarter wavelength, a half wavelength, or another fraction of a wavelength of spacing between neighboring antenna elements to allow for the desired constructive and destructive interference patterns of signals transmitted by the separate antenna elements within that expected range.

The amplitudes and/or phases of signals transmitted via antenna elements and/or sub-elements may be modulated and shifted relative to each other (such as by manipulating phase shift, phase offset, and/or amplitude) to generate one or more beams, which is referred to as beamforming. The term “beam” may refer to a directional transmission of a wireless signal toward a receiving device or otherwise in a desired direction. “Beam” may also generally refer to a direction associated with such a directional signal transmission, a set of directional resources associated with the signal transmission (for example, an angle of arrival, a horizontal direction, and/or a vertical direction) , and/or a set of parameters that indicate one or more aspects of a directional signal, a direction associated with the signal, and/or a set of directional resources associated with the signal. In some implementations, antenna elements may be individually selected or deselected for directional transmission of a signal (or signals) by controlling amplitudes of one or more corresponding amplifiers and/or phases of the signal (s) to form one or more beams. The shape of a beam (such as the amplitude, width, and/or presence of side lobes) and/or the direction of a beam (such as an angle of the beam relative to a surface of an antenna array) can be dynamically controlled by modifying the phase shifts, phase offsets, and/or amplitudes of the multiple signals relative to each other.

Different UEs 120 or network nodes 110 may include different numbers of antenna elements. For example, a UE 120 may include a single antenna element, two antenna elements, four antenna elements, eight antenna elements, or a different number of antenna elements. As another example, a network node 110 may include eight antenna elements, 24 antenna elements, 64 antenna elements, 128 antenna elements, or a different number of antenna elements. Generally, a larger number of antenna elements may provide increased control over parameters for beam generation relative to a smaller number of antenna elements, whereas a smaller number of antenna elements may be less complex to implement and may use less power than a larger number of antenna elements. Multiple antenna elements may support multiple-layer transmission, in which a first layer of a communication (which may include a first data stream) and a second layer of a communication (which may include a second data stream) are transmitted using the same time and frequency resources with spatial multiplexing.

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.

Fig. 3 is a diagram illustrating an example disaggregated base station architecture 300 in accordance with the present disclosure. One or more components of the example disaggregated base station architecture 300 may be, may include, or may be included in one or more network nodes (such one or more network nodes 110) . 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 that can communicate indirectly with the core network 320 via one or more disaggregated control units, such as a Non-RT RIC 350 associated with a Service Management and Orchestration (SMO) Framework 360 and/or a Near-RT RIC 370 (for example, via an E2 link) . The CU 310 may communicate with one or more DUs 330 via respective midhaul links, such as via 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 RF access links. In some deployments, a UE 120 may be simultaneously served by multiple RUs 340.

Each of the components of the disaggregated base station architecture 300, including the CUs 310, the DUs 330, the RUs 340, the Near-RT RICs 370, the Non-RT RICs 350, and the SMO Framework 360, may include one or more interfaces or may be coupled with one or more interfaces for receiving or transmitting signals, such as data or information, via a wired or wireless transmission medium.

In some aspects, the CU 310 may be logically split into one or more CU user plane (CU-UP) units and one or more CU control plane (CU-CP) units. A CU-UP unit may 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 may be deployed to communicate with one or more DUs 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. For example, a DU 330 may host various layers, such as an RLC layer, a MAC layer, or one or more PHY layers, such as one or more high PHY layers or one or more low PHY layers. Each layer (which also may be referred to as a module) may be implemented with an interface for communicating signals with other layers (and modules) hosted by the DU 330, or for communicating signals with the control functions hosted by the CU 310. Each RU 340 may implement lower layer functionality. In some aspects, real-time and non-real-time aspects of control and user plane communication with the RU (s) 340 may be controlled by the corresponding DU 330.

The SMO Framework 360 may support RAN deployment and provisioning of non-virtualized and virtualized network elements. For non-virtualized network elements, the SMO Framework 360 may 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 360 may 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. A virtualized network element may include, but is not limited to, a CU 310, a DU 330, an RU 340, a non-RT RIC 350, and/or a Near-RT RIC 370. In some aspects, the SMO Framework 360 may communicate with a hardware aspect of a 4G RAN, a 5G NR RAN, and/or a 6G RAN, such as an open eNB (O-eNB) 380, via an O1 interface. Additionally or alternatively, the SMO Framework 360 may communicate directly with each of one or more RUs 340 via a respective O1 interface. In some deployments, 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 Non-RT RIC 350 may include or may implement a logical function that enables non-real-time control and optimization of RAN elements and resources, AI/ML workflows including model training and updates, and/or policy-based guidance of applications and/or features in the Near-RT RIC 370. The Non-RT RIC 350 may be coupled to or may communicate with (such as via an A1 interface) the Near-RT RIC 370. The Near-RT RIC 370 may include or may implement a logical function that enables near-real-time control and optimization of RAN elements and resources via data collection and actions via an interface (such as via an E2 interface) connecting one or more CUs 310, one or more DUs 330, and/or an O-eNB with the Near-RT RIC 370.

In some aspects, to generate AI/ML models to be deployed in the Near-RT RIC 370, the Non-RT RIC 350 may receive parameters or external enrichment information from external servers. Such information may be utilized by the Near-RT RIC 370 and may be received at the SMO Framework 360 or the Non-RT RIC 350 from non-network data sources or from network functions. In some examples, the Non-RT RIC 350 or the Near-RT RIC 370 may tune RAN behavior or performance. For example, the Non-RT RIC 350 may monitor long-term trends and patterns for performance and may employ AI/ML models to perform corrective actions via the SMO Framework 360 (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.

The network node 110, the controller/processor 240 of the network node 110, the UE 120, the controller/processor 280 of the UE 120, the CU 310, the DU 330, the RU 340, or any other component (s) of Figs. 1, 2, or 3 may implement one or more techniques or perform one or more operations associated with configuring LTM reports, 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, any other component (s) of Fig. 2, the CU 310, the DU 330, or the RU 340 may perform or direct operations of, for example, process 1100 of Fig. 11, process 1200 of Fig. 12, process 1300 of Fig. 13, process 1400 of Fig. 14, or other processes as described herein (alone or in conjunction with one or more other processors) . The memory 242 may store data and program codes for the network node 110, the network node 110, the CU 310, the DU 330, or the RU 340. The memory 282 may store data and program codes for the UE 120. In some examples, the memory 242 or the memory 282 may include a non-transitory computer-readable medium storing a set of instructions (for example, code or program code) for wireless communication. The memory 242 may include one or more memories, such as a single memory or multiple different memories (of the same type or of different types) . The memory 282 may include one or more memories, such as a single memory or multiple different memories (of the same type or of different types) . For example, the set of instructions, when executed (for example, directly, or after compiling, converting, or interpreting) by one or more processors of the network node 110, the UE 120, the CU 310, the DU 330, or the RU 340, may cause the one or more processors to perform process 1100 of Fig. 11, process 1200 of Fig. 12, process 1300 of Fig. 13, process 1400 of Fig. 14, 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 an LTM CSI report configuration associated with NZP CSI-RSs in LTM candidate cells; and/or means for transmitting, based at least in part on the LTM CSI configuration, an LTM CSI report associated with one or more CSI resource settings, where each CSI resource setting is associated with one or more NZP CSI-RSs.

In some aspects, the UE includes means for receiving a configuration, for an aperiodic CSI-RS set associated with an L1 CSI report for an LTM candidate cell, and an indication of a time offset between triggering signaling of a serving cell and transmission of the aperiodic CSI-RS set in the LTM candidate cell; and/or means for transmitting the L1 CSI report based at least in part on the configuration. 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 node (e.g., a network node 110) includes means for transmitting an LTM CSI report configuration associated with NZP CSI-RSs in LTM candidate cells; and/or means for receiving, based at least in part on the LTM CSI configuration, an LTM CSI report associated with one or more CSI resource settings, where each CSI resource setting is associated with one or more NZP CSI-RSs.

In some aspects, the network node includes means for transmitting a configuration, for an aperiodic CSI-RS set associated with an L1 CSI report for an LTM candidate cell, and an indication of a time offset between triggering signaling of a serving cell and transmission of the aperiodic CSI-RS set in the LTM candidate cell; and/or means for receiving the L1 CSI report based at least in part on the configuration. The means for the network node to perform operations described herein may include, for example, one or more of communication manager 150, antenna 234, modem 232, MIMO detector 236, receive processor 238, transmit processor 214, TX MIMO processor 216, controller/processor 240, or memory 242.

Fig. 4 is a diagram illustrating examples 400, 410, and 420 of L1/L2 inter-cell mobility, in accordance with the present disclosure.

In some aspects, as described herein, examples 400, 410, 420 relate to different scenarios in which L1 signaling (e.g., a DCI message) or L2 signaling (e.g., a MAC CE) is used to indicate a change to a serving cell or a serving cell group (e.g., changing from a source cell to a target cell) . For example, as described in further detail herein, examples 400, 410, 420 generally relate to different scenarios in which L1/L2 signaling may be used to dynamically switch among candidate serving cells (e.g., including a special cell (SpCell) , which may be a primary cell (PCell) or a primary secondary cell (PSCell) , and/or a secondary cell (SCell) ) .

As shown in Fig. 4, and by example 400, a network node may configure the UE with a candidate SpCell set that includes various candidate SpCells to enable individual SpCell selection in a first L1/L2 inter-cell mobility scenario where separate signaling is used to indicate an SpCell change without carrier aggregation or dual connectivity. For example, the UE may be communicating with a source SpCell (shown as an old SpCell) , and the serving SpCell may be switched to a target SpCell (shown as a new SpCell) that corresponds to a candidate SpCell included in the candidate SpCell set. Accordingly, in example 400, L1/L2 signaling may be used to select a single SpCell among various candidate SpCells in a preconfigured candidate SpCell set without carrier aggregation or dual connectivity (e.g., the candidate SpCell set does not include any SCells) . In this case, the new SpCell may be selected based on a beam indication, and selection of an SCell may be based on legacy (e.g., L3) signaling or separate L1/L2 signaling.

Additionally, or alternatively, as shown by example 410, the UE may be configured with a candidate SpCell set, and an SpCell may be changed from a source cell to a target cell by swapping roles of an SpCell and an SCell among the cells included in the candidate SpCell set (e.g., in a carrier aggregation or dual connectivity scenario) . For example, as shown by example 410 in Fig. 4, a current SpCell may be swapped with a current SCell such that the old SpCell becomes a new SCell and the old SCell becomes the new SpCell.

Additionally, or alternatively, as shown by example 420, the UE may be configured with a candidate cell group, which may enable an SpCell (e.g., a PCell or a PSCell) and an SCell to be switched together in a carrier aggregation or dual connectivity scenario. For example, in this case, a cell group including multiple cells can be activated or deactivated together using L1/L2 signaling, where a current serving cell may be selected from a current cell group and the current serving cell may be selected from a new cell group based on mobility of the UE. In this case, the L1/L2 signaling used to change the cell group may be similar to examples 400 and 410, except that the L1/L2 signaling is used to switch cell groups that may include multiple cells rather than individual cells.

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 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 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 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 MAC CE signaling) , and/or aperiodic (e.g., using 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 reference signal 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 beam/UE 120 receive beam or beam pairs. The UE 120 may report the measurements to the network node 110 in a CSI report to enable the network node 110 to select one or more beam pairs 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 reference signal 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) .

In some aspects, a UE may initiate the CSI report. The CSI report may be based on L1 measurements and/or may be for LTM candidate cells. UE-initiated CSI reports based on L1 measurements or for LTM candidate cells have been based on SSBs. In some aspects, UE-initiated CSI reports based on L1 measurements or for LTM candidate cells may be based on CSI-RS resources. However, potential configurations for L1 CSI reports and LTM CSI reports may be insufficient and may lead to inefficiencies that do not maximize throughput, waste signaling resources, and increase latency. For example, there could be one CSI resource setting for a CSI report configuration or multiple CSI resource settings for a CSI report configuration. There could be one CSI resource set or multiple CSI resource sets per CSI resource setting. CSI report configurations do not define how they different scenarios relate to LTM candidate cells.

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 associated with selecting UE-initiated beam reports for a multiplexed beam report, in accordance with the present disclosure. As shown in Fig. 6, a network node 610 (e.g., network node 110) and a UE 620 (e.g., UE 120) may communicate with one another. The network node 610 may provide one or more serving cells, such as serving cell 612. Other network entities may provide reference signals from one or more LTM candidate cells, such as LTM candidate cell 614 and LTM candidate cell 616.

According to various aspects described herein, a UE may be configured to measure CSI-RS resources from LTM candidate cells for an LTM CSI report. The UE may receive a CSI report configuration for NZP CSI-RSs that are associated with one or more LTM candidate cells. The UE may transmit an LTM CSI report that is associated with one or more CSI resource settings, where each CSI resource setting is associated with one or more NZP CSI-RSs. For example, the CSI report configuration may be associated with multiple CSI resource settings, where each CSI resource setting is associated with a set of NZP CSI-RSs from a single LTM candidate cell. In another example, the CSI report configuration may be associated with a single CSI resource setting associated with multiple NZP CSI-RSs from different LTM candidate cells.

By receiving a CSI report configuration for one or more LTM candidate cells that includes how CSI resource settings are configured for NZP CSI-RSs, the UE may have more information for how to provide an accurate LTM CSI report. A network node may use an accurate LTM CSI report for scheduling and configuring the UE to improve communications that increase throughput, conserve signaling resources, and reduce latency.

Example 600 shows the use of an LTM CSI report configuration. As shown by reference number 625, the network node 610 may transmit an LTM CSI report configuration for NZP CSI-RSs in LTM candidate cells. The LTM CSI report may be associated with CSI resource settings for NZP CSI-RSs. The UE 620 may have an LTM candidate cell configuration for each LTM candidate cell of one or more LTM candidate cells. As shown by reference number 630, the UE 620 may receive NZP CSI-RSs from the one or more LTM candidate cells. The LTM CSI report configuration may specify CSI resource settings and CSI resource sets of NZP CSI-RSs, such as shown in Figs. 7-9.

As shown by reference number 635, the UE 620 may measure the NZP CSI-RSs based at least in part on the LTM CSI report configuration. The UE 620 may use the information from the LTM CSI report configuration for the measurements and to generate an LTM CSI report for a single LTM candidate cell or for multiple LTM candidate cells. The LTM CSI report configuration may help the UE 620 to identify NZP CSI-RSs of LTM candidate cells and settings for the NZP CSI-RSs. As shown by reference number 640, the UE 620 may transmit the LTM CSI report.

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 a CSI report configuration, in accordance with the present disclosure.

In some aspects, a CSI report configuration 702 may be for an LTM CSI report or an L1 CSI report. The CSI report configuration 702 may be associated with multiple CSI resource settings (e.g., LTM-CSI-ResourceConfig) , such as CSI resource setting 704 and CSI resource setting 706. Each CSI resource setting may be associated with multiple CSI resource sets (e.g., LTM-CSI-ResourceSet) , such as CSI resource set 708 and CSI resource set 710 for CSI resource setting 704. Each CSI resource set may include one or more reference signals (RSs) , such as RS 712 and RS 714. For example, a CSI resource set may include a set of NZP CSI-RSs.

In some aspects, different CSI resource settings may be associated with different LTM candidate cells, where two CSI resource settings are not associated with the same LTM candidate cell. Accordingly, the UE 620 may not measure (e.g., refrain from measuring) two sets of NZP CSI-RS from the same LTM candidate cells. In some aspects, different CSI resource settings may be associated with the same LTM candidate cell. In this scenario, the UE 620 may measure two sets of NZP CSI-RS from the same LTM candidate cell.

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 of CSI report configurations, in accordance with the present disclosure.

Example 800 shows that in some aspects, a CSI report configuration 802 may be associated with multiple CSI resource settings, such as CSI resource setting 804 and CSI resource setting 806. Each CSI resource setting may be associated with a CSI resource set ID and a candidate cell ID, such as CSI resource set ID 808 and candidate cell ID 810 for CSI resource setting 804. For example, an NZP CSI-RS resource set ID and/or a candidate cell ID may be provided for each CSI resource setting.

Example 800 also shows that, in some aspects, for CSI report configuration 816, different CSI resource settings may be associated with different candidate cells, and two CSI resource settings may not be associated with the same candidate cell. CSI resource setting 818 is associated with candidate cell 820 (e.g., LTM candidate cell) , CSI resource setting 822 is associated with candidate cell 824, and CSI resource setting 826 is associated with candidate cell 828. The UE 620 may not measure two sets of NZP CSI-RS from the same candidate cell.

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

Fig. 9 is a diagram illustrating an example 900 of CSI report configurations, in accordance with the present disclosure.

In some aspects, an LTM CSI report may be associated with a single CSI resource setting (e.g., LTM-CSI-ResourceConfig) , and the CSI resource setting may be associated with multiple NZP CSI-RSs (e.g., NZP-CSI-Resource) . The NZP CSI-RSs may be from different LTM candidate cells. Each LTM candidate cell may have an LTM candidate configuration.

Example 900 shows a CSI report configuration 902 associated with a single CSI resource setting 904. The CSI resource setting 904 is associated with multiple CSI resources (e.g., multiple NZP CSI-RSs) , such as CSI resource ID 906 (CSI resource set ID 908) and CSI resource ID 912 (CSI resource set ID 914) . Each CSI resource may be associated with a CSI resource set (CSI resource set ID 908, CSI resource set ID 914) and an LTM candidate cell (candidate cell ID 910, candidate cell ID 916) .

In some aspects, different NZP CSI-RSs in the same cell may be from the same set of NZP CSI-RSs, where the UE 620 may not measure NZP CSI-RSs from two different CSI resource sets in the same LTM candidate cells. Example 900 shows a CSI report configuration 918 with a single CSI resource setting 920. The CSI resource setting 920 is associated with multiple CSI resource sets (CSI resource set ID 922, CSI resource set ID 930) . Each CSI resource set is associated with an LTM candidate cell (e.g., candidate cell 924, candidate cell 932) and multiple CSI resources. CSI resource set ID 922 is associated with CSI resource ID 926 and CSI resource ID 928. CSI resource set ID 930 is associated with CSI resource ID 934 and CSI resource ID 936.

As indicated above, Fig. 9 is provided as an example. Other examples may differ from what is described with regard to Fig. 9.

Fig. 10 is a diagram illustrating an example 1000 of a time offset for a CSI report, in accordance with the present disclosure.

In some aspects, a UE (e.g., UE 620) may be configured with an aperiodic CSI-RS set for an L1 CSI report in LTM. As shown by reference number 1005, the network node 610 may transmit the configuration. As shown by reference number 1010, the network node 610 may transmit an indication of a time offset 1012 between a trigger signal in the serving cell 612 for the L1 CSI report and transmission of the CSI-RS set from an LTM candidate cell (e.g., LTM candidate cell 614) . In some aspects, the time offset 1012 may be an absolute value (e.g., 1 millisecond (ms) ) . In some aspects, the time offset 1012 may be a quantity of symbols or slots. In some aspects, the network node 610 may use a subcarrier spacing (SCS) of the serving cell 612 as an SCS for determining the time offset 1012. The network node 610 may use an SCS of a candidate cell as an SCS for determining the time offset 1012. The network node 610 may determine the time offset 1012 using a minimum SCS of the SCS of the serving cell 612 and an SCS of the candidate cell, or a maximum SCS of the SCS of the serving cell 612 and the SCS of the candidate cell.

As shown by reference number 1015, the network node 610 may transmit a trigger signal associated with CSI reporting. As shown by reference number 1020, the UE 620 may receive the (aperiodic) CSI-RS set from the LTM candidate cell. The UE 620 may receive the CSI-RS set at the time offset 1012 after receiving the trigger signal. As shown by reference number 1025, the UE 620 may measure the CSI-RSs of the CSI-RS set. As shown by reference number 1030, the UE 620 may transmit an LTM CSI report based at least in part on the measurements of the CSI-RSs.

By indicating a time offset for the aperiodic CSI-RS set, the UE 620 may have information for when to measure the aperiodic CSI-RS set, in order to provide an accurate LTM CSI report that can result in increased throughput and reduced latency.

As indicated above, Fig. 10 is provided as an example. Other examples may differ from what is described with regard to Fig. 10.

Fig. 11 is a diagram illustrating an example process 1100 performed, for example, at a UE or an apparatus of a UE, in accordance with the present disclosure. Example process 1100 is an example where the apparatus or the UE (e.g., UE 120, UE 620) performs operations associated with an LTM report configuration.

As shown in Fig. 11, in some aspects, process 1100 may include receiving an LTM CSI report configuration associated with NZP CSI-RSs in LTM candidate cells (block 1110) . For example, the UE (e.g., using reception component 1502 and/or communication manager 1506, depicted in Fig. 15) may receive an LTM CSI report configuration associated with NZP CSI-RSs in LTM candidate cells, as described above.

As further shown in Fig. 11, in some aspects, process 1100 may include transmitting, based at least in part on the LTM CSI configuration, an LTM CSI report associated with one or more CSI resource settings, where each CSI resource setting is associated with one or more NZP CSI-RSs (block 1120) . For example, the UE (e.g., using transmission component 1504 and/or communication manager 1506, depicted in Fig. 15) may transmit, based at least in part on the LTM CSI configuration, an LTM CSI report associated with one or more CSI resource settings, where each CSI resource setting is associated with one or more NZP CSI-RSs, as described above.

Process 1100 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 LTM CSI report configuration is associated with multiple CSI resource settings, and each CSI resource setting is associated with a set of NZP CSI-RSs from a single LTM candidate cell.

In a second aspect, alone or in combination with the first aspect, each CSI resource setting is associated with a respective NZP CSI-RS resource set ID and a respective LTM candidate cell ID.

In a third aspect, alone or in combination with one or more of the first and second aspects, different CSI resource settings are associated with different LTM candidate cells, and at least two CSI resource settings are not associated with a same LTM candidate cell.

In a fourth aspect, alone or in combination with one or more of the first through third aspects, process 1100 includes refraining from measuring NZP CSI-RSs of two sets of NZP CSI-RSs from the same LTM candidate cell.

In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, different CSI resource settings are associated with a same LTM candidate cell.

In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, process 1100 includes measuring NZP CSI-RSs of two sets of NZP CSI-RSs from the same LTM candidate cell.

In a seventh aspect, alone or in combination with one or more of the first through sixth aspects, the LTM CSI report configuration is associated with a single CSI resource setting, and each CSI resource setting is associated with multiple NZP CSI-RSs from different LTM candidate cells.

In an eighth aspect, alone or in combination with one or more of the first through seventh aspects, each NZP CSI-RS of the multiple NZP CSI-RSs is associated with a respective NZP CSI-RS resource set identifier and a respective LTM candidate cell ID.

In a ninth aspect, alone or in combination with one or more of the first through eighth aspects, different NZP CSI-RSs in a same LTM candidate cell are from a same set of NZP CSI-RSs.

In a tenth aspect, alone or in combination with one or more of the first through ninth aspects, process 1100 includes refraining from measuring NZP CSI-RSs from two different sets of NZP CSI-RSs in the same LTM candidate cell.

In an eleventh aspect, alone or in combination with one or more of the first through tenth aspects, NZP-RSs are from different sets of NZP CSI-RSs in a same LTM candidate cell.

In a twelfth aspect, alone or in combination with one or more of the first through eleventh aspects, process 1100 includes measuring NZP CSI-RSs of two sets of NZP CSI-RSs from the same LTM candidate cell.

In a thirteenth aspect, alone or in combination with one or more of the first through twelfth aspects, the LTM CSI report is associated with multiple CSI resource sets, and each CSI resource set is associated with an LTM candidate cell.

In a fourteenth aspect, alone or in combination with one or more of the first through thirteenth aspects, each CSI resource set is associated with an NZP CSI-RS resource set ID and an LTM candidate cell ID.

In a fifteenth aspect, alone or in combination with one or more of the first through fourteenth aspects, each CSI resource setting of the one or more CSI resource settings is associated with multiple CSI-RS resource set identifiers and multiple LTM candidate cell IDs.

Although Fig. 11 shows example blocks of process 1100, in some aspects, process 1100 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Fig. 11. Additionally, or alternatively, two or more of the blocks of process 1100 may be performed in parallel.

Fig. 12 is a diagram illustrating an example process 1200 performed, for example, at a UE or an apparatus of a UE, in accordance with the present disclosure. Example process 1200 is an example where the apparatus or the UE (e.g., UE 120, UE 620) performs operations associated with an LTM report configuration.

As shown in Fig. 12, in some aspects, process 1200 may include receiving a configuration, for an aperiodic CSI-RS set associated with an L1 CSI report for an LTM candidate cell, and an indication of a time offset between triggering signaling of a serving cell and transmission of the aperiodic CSI-RS set in the LTM candidate cell (block 1210) . For example, the UE (e.g., using reception component 1502 and/or communication manager 1506, depicted in Fig. 15) may receive a configuration, for an aperiodic CSI-RS set associated with an L1 CSI report for an LTM candidate cell, and an indication of a time offset between triggering signaling of a serving cell and transmission of the aperiodic CSI-RS set in the LTM candidate cell, as described above.

As further shown in Fig. 12, in some aspects, process 1200 may include transmitting the L1 CSI report based at least in part on the configuration (block 1220) . For example, the UE (e.g., using transmission component 1504 and/or communication manager 1506, depicted in Fig. 15) may transmit the L1 CSI report based at least in part on the configuration, as described above.

Process 1200 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 time offset is an absolute value.

In a second aspect, alone or in combination with the first aspect, the time offset is a quantity of symbols or slots.

In a third aspect, alone or in combination with one or more of the first and second aspects, an SCS for determining the time offset is an SCS of the serving cell.

In a fourth aspect, alone or in combination with one or more of the first through third aspects, an SCS for determining the time offset is an SCS of the LTM candidate cell.

In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, an SCS for determining the time offset is a minimum SCS of an SCS of the serving cell and an SCS of the LTM candidate cell, or a maximum SCS of the SCS of the serving cell and the SCS of the LTM candidate cell.

Although Fig. 12 shows example blocks of process 1200, in some aspects, process 1200 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Fig. 12. Additionally, or alternatively, two or more of the blocks of process 1200 may be performed in parallel.

Fig. 13 is a diagram illustrating an example process 1300 performed, for example, at a network node or an apparatus of a network node, in accordance with the present disclosure. Example process 1300 is an example where the apparatus or the network node (e.g., network node 110, network node 610) performs operations associated with an LTM report configuration.

As shown in Fig. 13, in some aspects, process 1300 may include transmitting an LTM CSI report configuration associated with NZP CSI-RSs in LTM candidate cells (block 1310) . For example, the network node (e.g., using transmission component 1604 and/or communication manager 1606, depicted in Fig. 16) may transmit an LTM CSI report configuration associated with NZP CSI-RSs in LTM candidate cells, as described above.

As further shown in Fig. 13, in some aspects, process 1300 may include receiving, based at least in part on the LTM CSI configuration, an LTM CSI report associated with one or more CSI resource settings, where each CSI resource setting is associated with one or more NZP CSI-RSs (block 1320) . For example, the network node (e.g., using reception component 1602 and/or communication manager 1606, depicted in Fig. 16) may receive, based at least in part on the LTM CSI configuration, an LTM CSI report associated with one or more CSI resource settings, where each CSI resource setting is associated with one or more NZP CSI-RSs, as described above.

Process 1300 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 fourth aspect, alone or in combination with one or more of the first through third aspects, process 1300 includes refraining from measuring NZP CSI-RSs of two sets of NZP CSI-RSs from the same LTM candidate cell.

In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, process 1300 includes measuring NZP CSI-RSs of two sets of NZP CSI-RSs from the same LTM candidate cell.

In an eighth aspect, alone or in combination with one or more of the first through seventh aspects, each NZP CSI-RS of the multiple NZP CSI-RSs is associated with a respective NZP CSI-RS resource set ID and a respective LTM candidate cell ID.

In a tenth aspect, alone or in combination with one or more of the first through ninth aspects, NZP-RSs are from different sets of NZP CSI-RSs in a same LTM candidate cell.

In a eleventh aspect, alone or in combination with one or more of the first through tenth aspects, the LTM CSI report is associated with multiple CSI resource sets, and each CSI resource set is associated with an LTM candidate cell.

In a twelfth aspect, alone or in combination with one or more of the first through eleventh aspects, each CSI resource set is associated with an NZP CSI-RS resource set identifier and an LTM candidate cell ID.

In a thirteenth aspect, alone or in combination with one or more of the first through twelfth aspects, each CSI resource setting of the one or more CSI resource settings is associated with multiple CSI-RS resource set IDs and multiple LTM candidate cell IDs.

Although Fig. 13 shows example blocks of process 1300, in some aspects, process 1300 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Fig. 13. Additionally, or alternatively, two or more of the blocks of process 1300 may be performed in parallel.

Fig. 14 is a diagram illustrating an example process 1400 performed, for example, at a network node or an apparatus of a network node, in accordance with the present disclosure. Example process 1400 is an example where the apparatus or the network node (e.g., network node 110, network node 610) performs operations associated with an LTM report configuration.

As shown in Fig. 14, in some aspects, process 1400 may include transmitting a configuration, for an aperiodic CSI-RS set associated with an L1 CSI report for an LTM candidate cell, and an indication of a time offset between triggering signaling of a serving cell and transmission of the aperiodic CSI-RS set in the LTM candidate cell (block 1410) . For example, the network node (e.g., using transmission component 1604 and/or communication manager 1606, depicted in Fig. 16) may transmit a configuration, for an aperiodic CSI-RS set associated with an L1 CSI report for an LTM candidate cell, and an indication of a time offset between triggering signaling of a serving cell and transmission of the aperiodic CSI-RS set in the LTM candidate cell, as described above.

As further shown in Fig. 14, in some aspects, process 1400 may include receiving the L1 CSI report based at least in part on the configuration (block 1420) . For example, the UE (e.g., using reception component 1602 and/or communication manager 1606, depicted in Fig. 16) may transmit the L1 CSI report based at least in part on the configuration, as described above.

Process 1400 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 time offset is an absolute value.

Although Fig. 14 shows example blocks of process 1400, in some aspects, process 1400 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than those depicted in Fig. 14. Additionally, or alternatively, two or more of the blocks of process 1400 may be performed in parallel.

Fig. 15 is a diagram of an example apparatus 1500 for wireless communication, in accordance with the present disclosure. The apparatus 1500 may be a UE, or a UE may include the apparatus 1500. In some aspects, the apparatus 1500 includes a reception component 1502, a transmission component 1504, and/or a communication manager 1506, 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 1506 is the communication manager 140 described in connection with Fig. 1. As shown, the apparatus 1500 may communicate with another apparatus 1508, such as a UE or a network node (such as a CU, a DU, an RU, or a base station) , using the reception component 1502 and the transmission component 1504.

In some aspects, the apparatus 1500 may be configured to perform one or more operations described herein in connection with Figs. 1-10. Additionally, or alternatively, the apparatus 1500 may be configured to perform one or more processes described herein, such as process 1100 of Fig. 11, process 1200 of Fig. 12, or a combination thereof. In some aspects, the apparatus 1500 and/or one or more components shown in Fig. 15 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. 15 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 one or more memories. 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 one or more controllers or one or more processors to perform the functions or operations of the component.

The reception component 1502 may receive communications, such as reference signals, control information, data communications, or a combination thereof, from the apparatus 1508. The reception component 1502 may provide received communications to one or more other components of the apparatus 1500. In some aspects, the reception component 1502 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 1500. In some aspects, the reception component 1502 may include one or more antennas, one or more modems, one or more demodulators, one or more MIMO detectors, one or more receive processors, one or more controllers/processors, one or more memories, or a combination thereof, of the UE described in connection with Fig. 2.

The transmission component 1504 may transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the apparatus 1508. In some aspects, one or more other components of the apparatus 1500 may generate communications and may provide the generated communications to the transmission component 1504 for transmission to the apparatus 1508. In some aspects, the transmission component 1504 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 1508. In some aspects, the transmission component 1504 may include one or more antennas, one or more modems, one or more modulators, one or more transmit MIMO processors, one or more transmit processors, one or more controllers/processors, one or more memories, or a combination thereof, of the UE described in connection with Fig. 2. In some aspects, the transmission component 1504 may be co-located with the reception component 1502 in one or more transceivers.

The communication manager 1506 may support operations of the reception component 1502 and/or the transmission component 1504. For example, the communication manager 1506 may receive information associated with configuring reception of communications by the reception component 1502 and/or transmission of communications by the transmission component 1504. Additionally, or alternatively, the communication manager 1506 may generate and/or provide control information to the reception component 1502 and/or the transmission component 1504 to control reception and/or transmission of communications.

In some aspects, the reception component 1502 may receive an LTM CSI report configuration associated with NZP CSI-RSs in LTM candidate cells. The transmission component 1504 may transmit, based at least in part on the LTM CSI configuration, an LTM CSI report associated with one or more CSI resource settings, where each CSI resource setting is associated with one or more NZP CSI-RSs.

The communication manager 1506 may refrain from measuring NZP CSI-RSs of two sets of NZP CSI-RSs from the same LTM candidate cell. The communication manager 1506 may measure NZP CSI-RSs of two sets of NZP CSI-RSs from the same LTM candidate cell.

The communication manager 1506 may refrain from measuring NZP CSI-RSs from two different sets of NZP CSI-RSs in the same LTM candidate cell. The communication manager 1506 may measure NZP CSI-RSs of two sets of NZP CSI-RSs from the same LTM candidate cell.

In some aspects, the reception component 1502 may receive a configuration, for an aperiodic CSI-RS set associated with an L1 CSI report for an LTM candidate cell, and an indication of a time offset between triggering signaling of a serving cell and transmission of the aperiodic CSI-RS set in the LTM candidate cell. The transmission component 1504 may transmit the L1 CSI report based at least in part on the configuration.

The number and arrangement of components shown in Fig. 15 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. 15. Furthermore, two or more components shown in Fig. 15 may be implemented within a single component, or a single component shown in Fig. 15 may be implemented as multiple, distributed components. Additionally, or alternatively, a set of (one or more) components shown in Fig. 15 may perform one or more functions described as being performed by another set of components shown in Fig. 15.

Fig. 16 is a diagram of an example apparatus 1600 for wireless communication, in accordance with the present disclosure. The apparatus 1600 may be a network node, or a network node may include the apparatus 1600. In some aspects, the apparatus 1600 includes a reception component 1602, a transmission component 1604, and/or a communication manager 1606, 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 1606 is the communication manager 150 described in connection with Fig. 1. As shown, the apparatus 1600 may communicate with another apparatus 1608, such as a UE or a network node (such as a CU, a DU, an RU, or a base station) , using the reception component 1602 and the transmission component 1604.

In some aspects, the apparatus 1600 may be configured to perform one or more operations described herein in connection with Figs. 1-10. Additionally, or alternatively, the apparatus 1600 may be configured to perform one or more processes described herein, such as process 1300 of Fig. 13, process 1400 of Fig. 14, or a combination thereof. In some aspects, the apparatus 1600 and/or one or more components shown in Fig. 16 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. 16 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 one or more memories. 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 one or more controllers or one or more processors to perform the functions or operations of the component.

The reception component 1602 may receive communications, such as reference signals, control information, data communications, or a combination thereof, from the apparatus 1608. The reception component 1602 may provide received communications to one or more other components of the apparatus 1600. In some aspects, the reception component 1602 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 1600. In some aspects, the reception component 1602 may include one or more antennas, one or more modems, one or more demodulators, one or more MIMO detectors, one or more receive processors, one or more controllers/processors, one or more memories, or a combination thereof, of the UE described in connection with Fig. 2.

The transmission component 1604 may transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the apparatus 1608. In some aspects, one or more other components of the apparatus 1600 may generate communications and may provide the generated communications to the transmission component 1604 for transmission to the apparatus 1608. In some aspects, the transmission component 1604 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 1608. In some aspects, the transmission component 1604 may include one or more antennas, one or more modems, one or more modulators, one or more transmit MIMO processors, one or more transmit processors, one or more controllers/processors, one or more memories, or a combination thereof, of the UE described in connection with Fig. 2. In some aspects, the transmission component 1604 may be co-located with the reception component 1602 in one or more transceivers.

The communication manager 1606 may support operations of the reception component 1602 and/or the transmission component 1604. For example, the communication manager 1606 may receive information associated with configuring reception of communications by the reception component 1602 and/or transmission of communications by the transmission component 1604. Additionally, or alternatively, the communication manager 1606 may generate and/or provide control information to the reception component 1602 and/or the transmission component 1604 to control reception and/or transmission of communications.

In some aspects, the transmission component 1604 may transmit an LTM CSI report configuration associated with NZP CSI-RSs in LTM candidate cells. The reception component 1602 may receive, based at least in part on the LTM CSI configuration, an LTM CSI report associated with one or more CSI resource settings, where each CSI resource setting is associated with one or more NZP CSI-RSs.

In some aspects, the transmission component 1604 may transmit a configuration, for an aperiodic CSI-RS set associated with an L1 CSI report for an LTM candidate cell, and an indication of a time offset between triggering signaling of a serving cell and transmission of the aperiodic CSI-RS set in the LTM candidate cell. The reception component 1602 may transmit the L1 CSI report based at least in part on the configuration.

The number and arrangement of components shown in Fig. 16 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. 16. Furthermore, two or more components shown in Fig. 16 may be implemented within a single component, or a single component shown in Fig. 16 may be implemented as multiple, distributed components. Additionally, or alternatively, a set of (one or more) components shown in Fig. 16 may perform one or more functions described as being performed by another set of components shown in Fig. 16.

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 lower layer triggered mobility (LTM) channel state information (CSI) report configuration associated with non-zero power (NZP) CSI reference signals (CSI-RSs) in LTM candidate cells; and transmitting, based at least in part on the LTM CSI configuration, an LTM CSI report associated with one or more CSI resource settings that are each associated with one or more of the NZP CSI-RSs.

Aspect 2: The method of Aspect 1, wherein the LTM CSI report configuration is associated with multiple CSI resource settings, and wherein each CSI resource setting is associated with a set of NZP CSI-RSs from a single LTM candidate cell.

Aspect 3: The method of Aspect 2, wherein each CSI resource setting is associated with a respective NZP CSI-RS resource set identifier and a respective LTM candidate cell identifier.

Aspect 4: The method of Aspect 2, wherein different CSI resource settings are associated with different LTM candidate cells, and wherein at least two CSI resource settings are not associated with a same LTM candidate cell.

Aspect 5: The method of Aspect 4, further comprising refraining from measuring NZP CSI-RSs of two sets of NZP CSI-RSs from the same LTM candidate cell.

Aspect 6: The method of Aspect 2, wherein different CSI resource settings are associated with a same LTM candidate cell.

Aspect 7: The method of Aspect 6, further comprising measuring NZP CSI-RSs of two sets of NZP CSI-RSs from the same LTM candidate cell.

Aspect 8: The method of any of Aspects 1-7, wherein the LTM CSI report configuration is associated with a single CSI resource setting, and wherein each CSI resource setting is associated with multiple NZP CSI-RSs from different LTM candidate cells.

Aspect 9: The method of Aspect 8, wherein each NZP CSI-RS of the multiple NZP CSI-RSs is associated with a respective NZP CSI-RS resource set identifier and a respective LTM candidate cell identifier.

Aspect 10: The method of Aspect 8, wherein different NZP CSI-RSs in a same LTM candidate cell are from a same set of NZP CSI-RSs.

Aspect 11: The method of Aspect 10, further comprising refraining from measuring NZP CSI-RSs from two different sets of NZP CSI-RSs in the same LTM candidate cell.

Aspect 12: The method of Aspect 8, wherein NZP-RSs are from different sets of NZP CSI-RSs in a same LTM candidate cell.

Aspect 13: The method of Aspect 12, further comprising measuring NZP CSI-RSs of two sets of NZP CSI-RSs from the same LTM candidate cell.

Aspect 14: The method of any of Aspects 1-13, wherein the LTM CSI report is associated with multiple CSI resource sets, and wherein each CSI resource set is associated with an LTM candidate cell.

Aspect 15: The method of Aspect 14, wherein each CSI resource set is associated with an NZP CSI-RS resource set identifier and an LTM candidate cell identifier.

Aspect 16: The method of Aspect 14, wherein each CSI resource setting of the one or more CSI resource settings is associated with multiple CSI-RS resource set identifiers and multiple LTM candidate cell identifiers.

Aspect 17: A method of wireless communication performed by a user equipment (UE) , comprising: receiving a configuration, for an aperiodic channel state information (CSI) reference signal (CSI-RS) set associated with a Layer 1 (L1) CSI report for a lower layer triggered mobility (LTM) candidate cell, and an indication of a time offset between triggering signaling of a serving cell and transmission of the aperiodic CSI-RS set in the LTM candidate cell; and transmitting the L1 CSI report based at least in part on the configuration.

Aspect 18: The method of Aspect 17, wherein the time offset is an absolute value.

Aspect 19: The method of any of Aspects 17-18, wherein the time offset is a quantity of symbols or slots.

Aspect 20: The method of Aspect 19, wherein a subcarrier spacing (SCS) for determining the time offset is an SCS of the serving cell.

Aspect 21: The method of Aspect 19, wherein a subcarrier spacing (SCS) for determining the time offset is an SCS of the LTM candidate cell.

Aspect 22: The method of Aspect 19, wherein a subcarrier spacing (SCS) for determining the time offset is a minimum SCS of an SCS of the serving cell and an SCS of the LTM candidate cell, or a maximum SCS of the SCS of the serving cell and the SCS of the LTM candidate cell.

Aspect 23: A method of wireless communication performed by a user equipment (UE) , comprising: transmitting a lower layer triggered mobility (LTM) channel state information (CSI) report configuration associated with non-zero power (NZP) CSI reference signals (CSI-RSs) in LTM candidate cells; and receiving, based at least in part on the LTM CSI configuration, an LTM CSI report associated with one or more CSI resource settings that are each associated with one or more of the NZP CSI-RSs.

Aspect 24: The method of Aspect 23, wherein the LTM CSI report configuration is associated with multiple CSI resource settings, and wherein each CSI resource setting is associated with a set of NZP CSI-RSs from a single LTM candidate cell.

Aspect 25: The method of Aspect 24, wherein each CSI resource setting is associated with a respective NZP CSI-RS resource set identifier and a respective LTM candidate cell identifier.

Aspect 26: The method of Aspect 24, wherein different CSI resource settings are associated with different LTM candidate cells, and wherein at least two CSI resource settings are not associated with a same LTM candidate cell.

Aspect 27: The method of Aspect 24, wherein different CSI resource settings are associated with a same LTM candidate cell.

Aspect 28: The method of any of Aspects 23-27, wherein the LTM CSI report configuration is associated with a single CSI resource setting, and wherein each CSI resource setting is associated with multiple NZP CSI-RSs from different LTM candidate cells.

Aspect 29: The method of Aspect 28, wherein each NZP CSI-RS of the multiple NZP CSI-RSs is associated with a respective NZP CSI-RS resource set identifier and a respective LTM candidate cell identifier.

Aspect 30: The method of Aspect 28, wherein different NZP CSI-RSs in a same LTM candidate cell are from a same set of NZP CSI-RSs.

Aspect 31: The method of Aspect 28, wherein NZP-RSs are from different sets of NZP CSI-RSs in a same LTM candidate cell.

Aspect 32: The method of any of Aspects 23-31, wherein the LTM CSI report is associated with multiple CSI resource sets, and wherein each CSI resource set is associated with an LTM candidate cell.

Aspect 33: The method of Aspect 32, wherein each CSI resource set is associated with an NZP CSI-RS resource set identifier and an LTM candidate cell identifier.

Aspect 34: The method of Aspect 32, wherein each CSI resource setting of the one or more CSI resource settings is associated with multiple CSI-RS resource set identifiers and multiple LTM candidate cell identifiers.

Aspect 35: A method of wireless communication performed by a user equipment (UE) , comprising: transmitting a configuration, for an aperiodic channel state information (CSI) reference signal (CSI-RS) set associated with a Layer 1 (L1) CSI report for a lower layer triggered mobility (LTM) candidate cell, and an indication of a time offset between triggering signaling of a serving cell and transmission of the aperiodic CSI-RS set in the LTM candidate cell; and receiving the L1 CSI report based at least in part on the configuration.

Aspect 36: The method of Aspect 35, wherein the time offset is an absolute value.

Aspect 37: The method of any of Aspects 35-36, wherein the time offset is a quantity of symbols or slots.

Aspect 38: The method of Aspect 35, wherein a subcarrier spacing (SCS) for determining the time offset is an SCS of the serving cell.

Aspect 39: The method of Aspect 35, wherein a subcarrier spacing (SCS) for determining the time offset is an SCS of the LTM candidate cell.

Aspect 40: The method of Aspect 35, wherein a subcarrier spacing (SCS) for determining the time offset is a minimum SCS of an SCS of the serving cell and an SCS of the LTM candidate cell, or a maximum SCS of the SCS of the serving cell and the SCS of the LTM candidate cell.

Aspect 41: An apparatus for wireless communication at a device, the apparatus comprising one or more processors; one or more memories coupled with the one or more processors; and instructions stored in the one or more memories and executable by the one or more processors to cause the apparatus to perform the method of one or more of Aspects 1-40.

Aspect 42: An apparatus for wireless communication at a device, the apparatus comprising one or more memories and one or more processors coupled to the one or more memories, the one or more processors configured to cause the device to perform the method of one or more of Aspects 1-40.

Aspect 43: An apparatus for wireless communication, the apparatus comprising at least one means for performing the method of one or more of Aspects 1-40.

Aspect 44: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by one or more processors to perform the method of one or more of Aspects 1-40.

Aspect 45: 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 1-40.

Aspect 46: A device for wireless communication, the device comprising a processing system that includes one or more processors and one or more memories coupled with the one or more processors, the processing system configured to cause the device to perform the method of one or more of Aspects 1-40.

Aspect 47: An apparatus for wireless communication at a device, the apparatus comprising one or more memories and one or more processors coupled to the one or more memories, the one or more processors individually or collectively configured to cause the device to perform the method of one or more of Aspects 1-40.

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 or a combination of hardware and at least one of software or firmware. “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, 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 or a combination of hardware and software. It will be apparent that systems or methods described herein may be implemented in different forms of hardware or a combination of hardware and software. The actual specialized control hardware or software code used to implement these systems or methods is not limiting of the aspects. Thus, the operation and behavior of the systems or methods are described herein without reference to specific software code, because those skilled in the art will understand that software and hardware can be designed to implement the systems or methods based, at least in part, on the description herein. A component being configured to perform a function means that the component has a capability to perform the function, and does not require the function to be actually performed by the component, unless noted otherwise.

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, or not equal to the threshold, among other examples.

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 (for example, 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, ” and similar terms are intended to be open-ended terms that do not limit an element that they modify (for example, an element “having” A may also have B) . Further, the phrase “based on” is intended to mean “based on or otherwise in association with” 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 (for example, if used in combination with “either” or “only one of” ) . It should be understood that “one or more” is equivalent to “at least one. ”

Even though particular combinations of features are recited in the claims 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 or disclosed in the specification. The disclosure of various aspects includes each dependent claim in combination with every other claim in the claim set.

Claims

An apparatus for wireless communication at a user equipment (UE) , comprising:

one or more memories; and

one or more processors coupled with the one or more memories and configured to cause the UE to:

receive a lower layer triggered mobility (LTM) channel state information (CSI) report configuration associated with non-zero power (NZP) CSI reference signals (CSI-RSs) in LTM candidate cells; and

transmit, based at least in part on the LTM CSI configuration, an LTM CSI report associated with one or more CSI resource settings that are each associated with one or more of the NZP CSI-RSs.
The apparatus of claim 1, wherein the LTM CSI report configuration is associated with multiple CSI resource settings, and wherein each CSI resource setting is associated with a set of NZP CSI-RSs from a single LTM candidate cell.
The apparatus of claim 2, wherein each CSI resource setting is associated with a respective NZP CSI-RS resource set identifier and a respective LTM candidate cell identifier.
The apparatus of claim 2, wherein different CSI resource settings are associated with different LTM candidate cells, and wherein at least two CSI resource settings are not associated with a same LTM candidate cell.
The apparatus of claim 4, wherein the one or more processors are individually or collectively configured to cause the UE to refrain from measuring NZP CSI-RSs of two sets of NZP CSI-RSs from the same LTM candidate cell.
The apparatus of claim 2, wherein different CSI resource settings are associated with a same LTM candidate cell.
The apparatus of claim 6, wherein the one or more processors are individually or collectively configured to cause the UE to measure NZP CSI-RSs of two sets of NZP CSI-RSs from the same LTM candidate cell.
The apparatus of claim 1, wherein the LTM CSI report configuration is associated with a single CSI resource setting, and wherein each CSI resource setting is associated with multiple NZP CSI-RSs from different LTM candidate cells.
The apparatus of claim 8, wherein each NZP CSI-RS of the multiple NZP CSI-RSs is associated with a respective NZP CSI-RS resource set identifier and a respective LTM candidate cell identifier.
The apparatus of claim 8, wherein different NZP CSI-RSs in a same LTM candidate cell are from a same set of NZP CSI-RSs.
The apparatus of claim 10, wherein the one or more processors are individually or collectively configured to cause the UE to refrain from measuring NZP CSI-RSs from two different sets of NZP CSI-RSs in the same LTM candidate cell.
The apparatus of claim 8, wherein NZP-RSs are from different sets of NZP CSI-RSs in a same LTM candidate cell.
The apparatus of claim 12, wherein the one or more processors are individually or collectively configured to cause the UE to measure NZP CSI-RSs of two sets of NZP CSI-RSs from the same LTM candidate cell.
The apparatus of claim 1, wherein the LTM CSI report is associated with multiple CSI resource sets, and wherein each CSI resource set is associated with an LTM candidate cell.
The apparatus of claim 14, wherein each CSI resource set is associated with an NZP CSI-RS resource set identifier and an LTM candidate cell identifier.
The apparatus of claim 14, wherein each CSI resource setting of the one or more CSI resource settings is associated with multiple CSI-RS resource set identifiers and multiple LTM candidate cell identifiers.
An apparatus for wireless communication at a user equipment (UE) , comprising:

one or more memories; and

one or more processors coupled with the one or more memories and configured to cause the UE to:

receive a configuration, for an aperiodic channel state information (CSI) reference signal (CSI-RS) set associated with a Layer 1 (L1) CSI report for a lower layer triggered mobility (LTM) candidate cell, and an indication of a time offset between triggering signaling of a serving cell and transmission of the aperiodic CSI-RS set in the LTM candidate cell; and

transmit the L1 CSI report based at least in part on the configuration.
The apparatus of claim 17, wherein the time offset is an absolute value.
The apparatus of claim 17, wherein the time offset is a quantity of symbols or slots.
The apparatus of claim 19, wherein a subcarrier spacing (SCS) for determining the time offset is one of:

an SCS of the serving cell,

an SCS of the LTM candidate cell, or

a minimum SCS of an SCS of the serving cell and an SCS of the LTM candidate cell, or a maximum SCS of the SCS of the serving cell and the SCS of the LTM candidate cell.
A method of wireless communication performed by a user equipment (UE) , comprising:

receiving a lower layer triggered mobility (LTM) channel state information (CSI) report configuration associated with non-zero power (NZP) CSI reference signals (CSI-RSs) in LTM candidate cells; and

transmitting, based at least in part on the LTM CSI configuration, an LTM CSI report associated with one or more CSI resource settings that are each associated with one or more of the NZP CSI-RSs.
A method of wireless communication performed by a user equipment (UE) , comprising:

receiving a configuration, for an aperiodic channel state information (CSI) reference signal (CSI-RS) set associated with a Layer 1 (L1) CSI report for a lower layer triggered mobility (LTM) candidate cell, and an indication of a time offset between triggering signaling of a serving cell and transmission of the aperiodic CSI-RS set in the LTM candidate cell; and

transmitting the L1 CSI report based at least in part on the configuration.