Channel state information measurement configuration for candidate cells in layer 1 and layer 2 mobility

Abstract

Aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may receive, from a network node, a channel state information (CSI) measurement configuration that configures one or more Layer 1 (L1) measurements for a candidate cell. The UE may obtain the one or more L1 measurements for the candidate cell based at least in part on the CSI measurement configuration. The UE may send, to the network node, an L1 measurement report indicating the one or more L1 measurements for the candidate cell. Numerous other aspects are described.

Description

Technical Field

[0001] Aspects of the present disclosure generally relate to wireless communications and relate to techniques and apparatus associated with channel state information (CSI) measurement configuration for candidate cells in layer 1 and layer 2 mobility. Background Art

[0002] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasting. A typical wireless communication system may employ a multiple access technology capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple access technologies include code division multiple access (CDMA) systems, time division multiple access (TDMA) systems, frequency division multiple access (FDMA) systems, orthogonal frequency division multiple access (OFDMA) systems, single carrier frequency division multiple access (SC-FDMA) systems, time division synchronous code division multiple access (TD-SCDMA) systems, and long term evolution (LTE). LTE / LTE-Advanced is an enhanced collection of the universal mobile telecommunications system (UMTS) mobile standards promulgated by the 3rd Generation Partnership Project (3GPP).

[0003] A wireless network may include one or more network nodes that support communication for wireless communication devices such as user equipment (UE) or multiple UEs. The UE may communicate with the network node via downlink communication and uplink communication. "Downlink" (or "DL") refers to a communication link from the network node to the UE, and "uplink" (or "UL") refers to a communication link from the UE to the network node. Some wireless networks may support device-to-device communication, such as via a local link (e.g., sidelink (SL), wireless local area network (WLAN) link, and / or wireless personal area network (WPAN) link, etc.).

[0004] The above multi-access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different UEs to communicate at the urban, national, regional, and / or global levels. New Radio (NR), which can be referred to as 5G, is an enhanced set of the LTE mobile standard promulgated by 3GPP. NR is designed to better support mobile broadband Internet access in the following ways: improving spectral efficiency; reducing costs; improving services; utilizing new spectrums; and better integrating with other open standards by using Orthogonal Frequency Division Multiplexing (OFDM) with Cyclic Prefix (CP) (CP-OFDM) on the downlink, CP-OFDM and / or Single Carrier Frequency Division Multiplexing (SC-FDM) (also known as Discrete Fourier Transform Spread OFDM (DFT-s-OFDM)) on the uplink; and supporting beamforming, Multiple Input Multiple Output (MIMO) antenna technology, and carrier aggregation. With the continuous increase in the demand for mobile broadband access, further improvements to LTE, NR, and other radio access technologies are still useful. SUMMARY OF THE INVENTION

[0005] Some aspects described herein relate to a method of wireless communication performed by a User Equipment (UE). The method may include: receiving, from a network node, a Channel State Information (CSI) measurement configuration that configures one or more Layer 1 (L1) measurements for a candidate cell. The method may include: obtaining, at least in part based on the CSI measurement configuration, the one or more L1 measurements for the candidate cell. The method may include: sending, to the network node, an L1 measurement report indicating the one or more L1 measurements for the candidate cell.

[0006] Some aspects described herein relate to a method of wireless communication performed by a network node. The method may include: sending, to a UE, a CSI measurement configuration that configures one or more L1 measurements for a candidate cell. The method may include: receiving, from the UE, an L1 measurement report indicating the one or more L1 measurements for the candidate cell.

[0007] Some aspects described herein relate to a UE for wireless communication. The UE may include: a memory; and one or more processors coupled to the memory. The one or more processors may be configured to: receive, from a network node, a CSI measurement configuration that configures one or more L1 measurements for a candidate cell. The one or more processors may be configured to: obtain, at least in part based on the CSI measurement configuration, the one or more L1 measurements for the candidate cell. The one or more processors may be configured to: send, to the network node, an L1 measurement report indicating the one or more L1 measurements for the candidate cell.

[0008] Some aspects described herein relate to a network node for wireless communication. The network node may include: a memory; and one or more processors coupled to the memory. The one or more processors may be configured to: send to a UE a CSI measurement configuration that configures one or more L1 measurements for a candidate cell. The one or more processors may be configured to: receive from the UE an L1 measurement report indicating the one or more L1 measurements for the candidate cell.

[0009] Some aspects described herein relate to a non-transitory computer-readable medium storing 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 from a network node a CSI measurement configuration that configures one or more L1 measurements for a candidate cell. The set of instructions, when executed by one or more processors of the UE, may cause the UE to obtain the one or more L1 measurements for the candidate cell based at least in part on the CSI measurement configuration. The set of instructions, when executed by one or more processors of the UE, may cause the UE to send to the network node an L1 measurement report indicating the one or more L1 measurements for the candidate cell.

[0010] Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication by a network node. The set of instructions, when executed by one or more processors of the network node, may cause the network node to send to a UE a CSI measurement configuration that configures one or more L1 measurements for a candidate cell. The set of instructions, when executed by one or more processors of the network node, may cause the network node to receive from the UE an L1 measurement report indicating the one or more L1 measurements for the candidate cell.

[0011] Some aspects described herein relate to a device for wireless communication. The device may include: means for receiving from a network node a CSI measurement configuration that configures one or more L1 measurements for a candidate cell. The device may include: means for obtaining the one or more L1 measurements for the candidate cell based at least in part on the CSI measurement configuration. The device may include: means for sending to the network node an L1 measurement report indicating the one or more L1 measurements for the candidate cell.

[0012] Some aspects described herein relate to a device for wireless communication. The device may include: means for sending to a UE a CSI measurement configuration that configures one or more L1 measurements for a candidate cell. The device may include: means for receiving from the UE an L1 measurement report indicating the one or more L1 measurements for the candidate cell.

[0013] The aspects as a whole include methods, apparatuses, systems, computer program products, non-transitory computer-readable media, user equipment, base stations, network entities, network nodes, wireless communication devices, and / or processing systems as fully described in the accompanying drawings and specification herein and illustrated in the drawings and specification.

[0014] The features and technical advantages of examples in accordance with the present disclosure have been outlined rather broadly above so that the detailed description below may be better understood. Additional features and advantages will be described hereinafter. The disclosed concepts and specific examples can be readily used as a basis for modifying or designing other structures for achieving the same purposes of the present disclosure. Such equivalent constructs do not depart from the scope of the appended claims. When considered in conjunction with the accompanying drawings, the features of the concepts disclosed herein, the manner of their organization and operation, and the associated advantages, will be better understood from the following description. Each of the drawings provided herein is for the purpose of illustration and description and is not to be construed as a definition of the limits of the claims.

[0015] Although aspects are described in this disclosure by way of illustration of some examples, those skilled in the art will understand that such aspects can be implemented in many different arrangements and scenarios. The techniques described herein can be implemented using different platform types, devices, systems, shapes, sizes, and / or packaging arrangements. For example, some aspects can be implemented via integrated chip implementations or other non-module component-based devices (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail / shopping devices, medical devices, and / or artificial intelligence devices). Aspects can be implemented in chip-level components, modular components, non-modular components, non-chip-level components, device-level components, and / or system-level components. Devices incorporating the described aspects and features can include additional components and features for implementing and practicing the aspects claimed and described. For example, the transmission and reception of wireless signals can include one or more components for analog and digital purposes (e.g., hardware components including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders, and / or summers). The aspects described herein are intended to be practiced in a wide variety of devices, components, systems, distributed arrangements, and / or end-user devices of various sizes, shapes, and configurations. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] To understand the above features of the present disclosure in detail, a more specific description of the above briefly outlined summary of the invention can be obtained by referring to the aspects, some of which are illustrated in the accompanying drawings. However, it should be noted that the drawings only illustrate some typical aspects of the present disclosure and are therefore not considered as limiting its scope, as the specification may admit other equally valid aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0017] Figure 1 is a diagram illustrating an example of a wireless network according to the present disclosure.

[0018] Figure 2 is a diagram illustrating an example of a network node communicating with a user equipment (UE) in a wireless network according to the present disclosure.

[0019] Figure 3 is a diagram illustrating an example of a decomposed base station architecture according to the present disclosure.

[0020] Figure 4 is a diagram illustrating an example of a make-before-break handover procedure according to the present disclosure.

[0021] Figures 5A to 5B is a diagram illustrating an example of layer 1 (L1) and / or layer 2 (L2) inter-cell mobility according to the present disclosure.

[0022] Figure 6 is a diagram illustrating an example of cell update in an L1 / L2 inter-cell mobility scenario according to the present disclosure.

[0023] Figures 7A to 7C is a diagram illustrating an example associated with channel state information (CSI) measurement configuration for a candidate cell in L1 / L2 mobility according to the present disclosure.

[0024] Figures 8 to 9 is a diagram illustrating an example procedure associated with CSI measurement configuration for a candidate cell in L1 / L2 mobility according to the present disclosure.

[0025] Figures 10 to 11 is a diagram of an example apparatus for wireless communication according to the present disclosure. Detailed Description

[0026] Aspects of the present disclosure are described more fully hereinafter with reference to the accompanying drawings. However, the present disclosure may be embodied in many different forms and should not be construed as limited to any specific structure or function presented throughout this disclosure. Rather, these aspects are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Those skilled in the art will understand that the scope of the present 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, any number of the aspects set forth herein may be used to implement a device or practice a method. Additionally, the scope of the present disclosure is intended to cover such devices or methods implemented using other structures, functionality, or a combination of structures and functionality in addition to or different from the aspects of the disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of a claim.

[0027] Certain aspects of a telecommunications system will now be presented with reference to various devices and techniques. These devices and techniques will be described in the following detailed description and illustrated in the drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements may be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system.

[0028] Although terms generally associated with 5G or New Radio (NR) radio access technology (RAT) may be used herein to describe aspects, aspects of the present disclosure may be applied to other RATs such as 3G RAT, 4G RAT, and / or post-5G (e.g., 6G) RAT.

[0029] Figure 1FIG. is an example diagram illustrating a wireless network 100 in accordance with the present disclosure. The wireless network 100 may be a 5G (e.g., NR) network and / or a 4G (e.g., Long Term Evolution (LTE)) network, or may include elements of a 5G (e.g., NR) network and / or elements of a 4G (e.g., Long Term Evolution (LTE)) network, etc. The wireless network 100 may include one or more network nodes 110 (shown as network nodes 110a, network nodes 110b, network nodes 110c, and network nodes 110d), user equipment (UE) 120 or multiple UEs 120 (shown as UEs 120a, UEs 120b, UEs 120c, UEs 120d, and UEs 120e), and / or other entities. The network nodes 110 are network nodes that communicate with the UEs 120. As shown, the network nodes 110 may include one or more network nodes. For example, the network node 110 may be an aggregated network node, which means that the aggregated network node is configured to utilize a radio protocol stack physically or logically integrated within a single radio access network (RAN) node (e.g., within a single device or unit). As another example, the network node 110 may be a disaggregated network node (sometimes referred to as a disaggregated base station), which means that the network node 110 is configured to utilize a protocol stack physically or logically distributed between two or more nodes, such as one or more central units (CUs), one or more distributed units (DUs), or one or more radio units (RUs).

[0030] In some examples, the network node 110 is or includes a network node (such as an RU) that communicates with the UE 120 via a radio access link. In some examples, the network node 110 is or includes a network node (such as a DU) that communicates with other network nodes 110 via a fronthaul link or a midhaul link. In some examples, the network node 110 is or includes a network node (such as a CU) that communicates with other network nodes 110 via a midhaul link or communicates with a core network via a backhaul link. In some examples, the network node 110 (such as an aggregated network node 110 or a disaggregated network node 110) may include multiple network nodes, such as one or more RUs, one or more CUs, and / or one or more DUs. The network node 110 may include, for example, an NR base station, an LTE base station, a Node B, an eNB (e.g., in 4G), a gNB (e.g., in 5G), an access point, a transmit receive point (TRP), a DU, an RU, a CU, a mobility element of the network, a core network node, a network element, network equipment, a RAN node, or a combination thereof. In some examples, the network nodes 110 may be interconnected with each other or with one or more other network nodes 110 in the wireless network 100 using any suitable transport network via various types of fronthaul interfaces, midhaul interfaces, and / or backhaul interfaces (such as a direct physical connection, an air interface, or a virtual network).

[0031] In some examples, network node 110 may provide communication coverage for a specific geographical area. In the 3rd Generation Partnership Project (3GPP), depending on the context in which the term is used, the term "cell" may refer to the coverage area of network node 110 and / or the network node subsystem serving that coverage area. Network node 110 may provide communication coverage for macro cells, pico cells, femto cells, and / or another type of cell. A macro cell may cover a relatively large geographical area (e.g., with a radius of several kilometers) and may allow unrestricted access by UEs 120 with a service subscription. A pico cell may cover a relatively small geographical area and may allow unrestricted access by UEs 120 with a service subscription. A femto cell may cover a relatively small geographical area (e.g., a home) and may allow restricted access by UEs 120 associated with the femto cell (e.g., UEs 120 in a Closed Subscriber Group (CSG)). The network node 110 for a macro cell may be referred to as a macro network node. The network node 110 for a pico cell may be referred to as a pico network node. The network node 110 for a femto cell may be referred to as a femto network node or a home network node. In Figure 1 the example shown, network node 110a may be a macro network node for macro cell 102a, network node 110b may be a pico network node for pico cell 102b, and network node 110c may be a femto network node for femto cell 102c. A network node may support one or more (e.g., three) cells. In some examples, a cell may not necessarily be stationary, and the geographical area of a cell may move according to the location of a moving network node 110 (e.g., a mobile network node).

[0032] In some aspects, the term "base station" or "network node" may refer to an aggregated base station, a disaggregated base station, an integrated access and backhaul (IAB) node, a relay node, or one or more components thereof. For example, in some aspects, a "base station" or "network node" may refer to a CU, a DU, an RU, a near real-time (near RT) RAN intelligent controller (RIC), or a non-real-time (non RT) RIC, or a combination thereof. In some aspects, the term "base station" or "network node" may refer to a single device configured to perform one or more functions, such as those described herein in connection with network node 110. In some aspects, the term "base station" or "network node" may refer to multiple devices configured to perform one or more functions. For example, in some distributed systems, each of multiple different devices (which may be located at the same geographical location or different geographical locations) may be configured to perform at least a portion of a function, or to repeat at least a portion of the function, and the term "base station" or "network node" may refer to any one or more of these different devices. In some aspects, the term "base station" or "network node" may refer to one or more virtual base stations or one or more virtual base station functions. For example, in some aspects, two or more base station functions may be instantiated on a single device. In some aspects, the term "base station" or "network node" may refer to one base station function among base station functions, rather than another base station function. In this way, a single device may include more than one base station.

[0033] Wireless network 100 may include one or more relay stations. A relay station is a network node that can receive a transmission of data from an upstream node (e.g., network node 110 or UE 120) and transmit the data to a downstream node (e.g., UE 120 or network node 110). A relay station may be a UE 120 that can relay transmissions for other UEs 120. In Figure 1 the example shown, network node 110d (e.g., a relay network node) may communicate with network node 110a (e.g., a macro network node) and UE 120d to facilitate communication between network node 110a and UE 120d. A network node 110 that relays communication may be referred to as a relay station, a relay base station, a relay network node, a relay node, a relay, etc.

[0034] Wireless network 100 may be a heterogeneous network that includes different types of network nodes 110, such as macro network nodes, pico network nodes, femto network nodes, relay network nodes, etc. These different types of network nodes 110 may have different transmission power levels, different coverage areas, and / or different impacts on interference in wireless network 100. For example, a macro network node may have a high transmission power level (e.g., 5 watts to 40 watts), while pico network nodes, femto network nodes, and relay network nodes may have lower transmission power levels (e.g., 0.1 watt to 2 watts).

[0035] The network controller 130 can be coupled to or communicate with a set of network nodes 110 and can provide coordination and control for these network nodes 110. The network controller 130 can communicate with the network nodes 110 via a fronthaul communication link or a midhaul communication link. The network nodes 110 can also communicate directly with each other or indirectly via a wireless fronthaul communication link or a wired fronthaul communication link. In some aspects, the network controller 130 can be a CU or a core network device, or can include a CU or a core network device.

[0036] UEs 120 can be dispersed throughout the wireless network 100, and each UE 120 can be stationary or mobile. The UE 120 can include, for example, an access terminal, a terminal, a mobile station, and / or a subscriber unit. The UE 120 can be a cellular phone (e.g., a smart phone), a personal digital assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a wireless local loop (WLL) station, a tablet computer, a camera, a gaming device, a netbook, a smartbook, a superbook, a medical device, a biometric device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring or a smart bracelet)), an entertainment device (e.g., a music device, a video device, and / or a satellite radio), a vehicle component or sensor, a smart meter / sensor, industrial manufacturing equipment, a global positioning system device, the UE functionality of a network node, and / or any other suitable device configured to communicate via a wireless or wired medium.

[0037] Some UEs 120 can be considered machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. The MTC UE and / or the eMTC UE can include, for example, robots, drones, remote devices, sensors, meters, monitors, and / or location tags, which can communicate with network nodes, another device (e.g., a remote device), or some other entity. Some UEs 120 can be considered Internet of Things (IoT) devices and / or can be implemented as narrowband IoT (NB-IoT) devices. Some UEs 120 can be considered customer premise equipment. The UE 120 can be included inside a housing that houses components of the UE 120, such as a processor component and / or a memory component. In some examples, the processor component and the memory component can be coupled together. For example, the processor component (e.g., one or more processors) and the memory component (e.g., a memory) can be operably coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0038] Generally speaking, any number of wireless networks 100 can be deployed in a given geographical area. Each wireless network 100 can support a specific RAT and can operate on one or more frequencies. The RAT can be referred to as radio technology, air interface, etc. The frequency can be referred to as carrier, frequency channel, etc. In a given geographical area, each frequency can support a single RAT to avoid interference between wireless networks of different RATs. In some cases, an NR or 5G RAT network can be deployed.

[0039] In some examples, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) can communicate directly using one or more sidelink channels (e.g., communicate with each other without using the network node 110 as an intermediate device). For example, the UE 120 can use peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which can include vehicle-to-vehicle (V2V) protocol, vehicle-to-infrastructure (V2I) protocol, or vehicle-to-pedestrian (V2P) protocol) and / or mesh network for communication. In such examples, the UE 120 can perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by the network node 110.

[0040] The devices of the wireless network 100 can communicate using the electromagnetic spectrum, which can be subdivided into various categories, bands, channels, etc. according to frequency or wavelength. For example, the devices of the wireless network 100 can communicate using one or more operating bands. In 5G NR, two initial operating bands have been identified as frequency range designations FR1 (410 MHz to 7.125 GHz) and FR2 (24.25 GHz to 52.6 GHz). It should be understood that although a part of FR1 is greater than 6 GHz, in various documents and articles, FR1 is generally (interchangeably) referred to as the "sub-6 GHz" band. Regarding FR2, a similar naming issue sometimes occurs, which is generally (interchangeably) referred to as the "millimeter wave" band in documents and articles, although it is different from the extremely high frequency (EHF) band (30 GHz–300 GHz) identified by the International Telecommunication Union (ITU) as the "millimeter wave" band.

[0041] The frequency between FR1 and FR2 is generally referred to as the intermediate band frequency. Recent 5G NR research has identified the operating bands for these intermediate band frequencies as frequency range designations FR3 (7.125 GHz to 24.25 GHz). The bands falling within FR3 can inherit FR1 characteristics and / or FR2 characteristics, and thus can effectively extend the characteristics of FR1 and / or FR2 to the intermediate band frequencies. In addition, higher frequency bands are currently being explored to extend 5G NR operations beyond 52.6 GHz. For example, three higher operating bands have been identified as frequency range designations FR4a or FR4-1 (52.6 GHz to 71 GHz), FR4 (52.6 GHz to 114.25 GHz), and FR5 (114.25 GHz to 300 GHz). Each of these higher frequency bands falls within the EHF band.

[0042] Considering the above examples, unless otherwise specifically stated, it should be understood that if terms such as "below 6 GHz" are used herein, such terms can generally represent frequencies that can be below 6 GHz, can be within FR1, or can include intermediate band frequencies. Additionally, unless otherwise specifically stated, it should be understood that if terms such as "millimeter wave" are used herein, such terms can generally represent frequencies that can include intermediate band frequencies, can be within FR2, FR4, FR4-a or FR4-1, and / or FR5, or can be within the EHF band. It is envisioned that the frequencies included in these operating bands (e.g., FR1, FR2, FR3, FR4, FR4-a, FR4-1, and / or FR5) can be modified, and the techniques described herein apply to those modified frequency ranges.

[0043] In some aspects, UE 120 may include a communication manager 140. As described in more detail elsewhere herein, the communication manager 140 may receive, from a network node 110, a channel state information (CSI) measurement configuration that configures one or more layer 1 (L1) measurements for a candidate cell; obtain one or more L1 measurements for the candidate cell, at least in part based on the CSI measurement configuration; and send an L1 measurement report indicating the one or more L1 measurements for the candidate cell to the network node 110. Additionally or alternatively, the communication manager 140 may perform one or more other operations described herein.

[0044] In some aspects, network node 110 may include a communication manager 150. As described in more detail elsewhere herein, the communication manager 150 may send a CSI measurement configuration that configures one or more L1 measurements for a candidate cell to UE 120; and receive an L1 measurement report from UE 120 indicating the one or more L1 measurements for the candidate cell. Additionally or alternatively, the communication manager 150 may perform one or more other operations described herein.

[0045] As indicated above, Figure 1 is provided as an example. Other examples may differ from the example Figure 1 described.

[0046] Figure 2 is a diagram illustrating Example 200 in which network node 110 in wireless network 100 according to the present disclosure communicates with UE 120. Network node 110 may be equipped with a set of antennas 234a to 234t, such as T antennas (T≥1). UE 120 may be equipped with a set of antennas 252a to 252r, such as R antennas (R≥1). Network node 110 of Example 200 includes one or more radio frequency components, such as antenna 234 and modem 232. In some examples, network node 110 may include an interface, a communication component, or another component that facilitates communication with UE 120 or another network node. Some network nodes 110 may not include radio frequency components that facilitate direct communication with UE 120, such as one or more CUs or one or more DUs.

[0047] At network node 110, transmit processor 220 may receive data destined for UE 120 (or a set of UEs 120) from data source 212. Transmit processor 220 may select one or more modulation and coding schemes (MCSs) for UE 120 based at least in part on one or more channel quality indicators (CQIs) received from UE 120. Network node 110 may process (e.g., encode and modulate) data for UE 120 based at least in part on the MCS selected for UE 120 and may provide data symbols for UE 120. Transmit processor 220 may process system information (e.g., for semi-static resource partitioning information (SRPI)) and control information (e.g., CQI requests, grants, and / or upper layer signaling) and provide overhead symbols and control symbols. Transmit processor 220 may generate reference symbols for reference signals (e.g., cell-specific reference signal (CRS) or demodulation reference signal (DMRS)) and synchronization signals (e.g., primary synchronization signal (PSS) or secondary synchronization signal (SSS)). Transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on the data symbols, control symbols, overhead symbols, and / or reference symbols, if applicable, and may provide a set of output symbol streams (e.g., T output symbol streams) to a corresponding set of modems 232 (e.g., T modems) (shown as modems 232a through 232t). For example, each output symbol stream may be provided to a modulator component (shown as MOD) of modem 232. Each modem 232 may process the corresponding output symbol stream (e.g., for OFDM) using the respective modulator component to obtain an output sample stream. Each modem 232 may also process the output sample stream (e.g., convert to analog, amplify, filter, and / or up-convert) using the respective modulator component to obtain a downlink signal. Modems 232a through 232t may transmit a set of downlink signals (e.g., T downlink signals) via a corresponding set of antennas 234 (e.g., T antennas) (shown as antennas 234a through 234t).

[0048] At the UE 120, a set of antennas 252 (shown as antennas 252a through 252r) may receive downlink signals from the network node 110 and / or other network nodes 110 and may provide a set of received signals (e.g., R received signals) to a set of modems 254 (e.g., R modems) (shown as modems 254a through 254r). For example, each received signal may be provided to a demodulator component (shown as DEMOD) of the modem 254. Each modem 254 may condition (e.g., filter, amplify, down-convert, and / or digitize) the received signal using the corresponding demodulator component to obtain input samples. Each modem 254 may further process the input samples (e.g., for OFDM) using the demodulator component to obtain received symbols. The MIMO detector 256 may obtain the received symbols from the modems 254, may perform MIMO detection on the received symbols when applicable, and may provide the detected symbols. The receive processor 258 may process (e.g., demodulate and decode) the detected symbols, may provide the decoded data for the UE 120 to the data sink 260, and may provide the decoded control information and system information to the controller / processor 280. The term "controller / processor" may refer to one or more controllers, one or more processors, or a combination thereof. The channel processor may determine reference signal received power (RSRP) parameters, received signal strength indicator (RSSI) parameters, reference signal received quality (RSRQ) parameters, and / or CQI parameters, etc. In some examples, one or more components of the UE 120 may be included in the housing 284.

[0049] The network controller 130 may include a communication unit 294, a controller / processor 290, and a memory 292. The network controller 130 may include, for example, one or more devices in a core network. The network controller 130 may communicate with the network node 110 via the communication unit 294.

[0050] One or more antennas (e.g., antennas 234a through 234t and / or antennas 252a through 252r) may include one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, and / or one or more antenna arrays, etc., or may be included within one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, and / or one or more antenna arrays, etc. Antenna panels, antenna groups, sets of antenna elements, and / or antenna arrays may include one or more antenna elements (within a single housing or multiple housings), a set of coplanar antenna elements, a set of non-coplanar antenna elements, and / or one or more antenna elements coupled to one or more transmit and / or receive components (such as Figure 2 one or more components among)

[0051] On the uplink, at the UE 120, the transmit processor 264 may receive and process data from the data source 262 and control information from the controller / processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, and / or CQI). The transmit processor 264 may generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be pre-coded by the TX MIMO processor 266 when applicable, further processed by the modem 254 (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to the network node 110. In some examples, the modem 254 of the UE 120 may include a modulator and a demodulator. In some examples, the UE 120 includes a transceiver. The transceiver may include any combination of the antenna 252, the modem 254, the MIMO detector 256, the receive processor 258, the transmit processor 264, and / or the TX MIMO processor 266. The transceiver may be used by a processor (e.g., the controller / processor 280) and the memory 282 to perform aspects of any of the methods described herein (e.g., with reference to Figures 7A to 7C and / or Figures 8 to 11 ).

[0052] At the network node 110, the uplink signals from the UE 120 and / or other UEs may be received by the antenna 234, processed by the modem 232 (e.g., the demodulator component (shown as DEMOD) of the modem 232), detected by the MIMO detector 236 when applicable, and further processed by the receive processor 238 to obtain the decoded data and control information transmitted by the UE 120. The receive processor 238 may provide the decoded data to the data sink 239 and the decoded control information to the controller / processor 240. The network node 110 may include a communication unit 244 and may communicate with the network controller 130 via the communication unit 244. The network node 110 may include a scheduler 246 to schedule one or more UEs 120 for downlink communication and / or uplink communication. In some examples, the modem 232 of the network node 110 may include a modulator and a demodulator. In some examples, the network node 110 includes a transceiver. The transceiver may include any combination of the antenna 234, the modem 232, the MIMO detector 236, the receive processor 238, the transmit processor 220, and / or the TX MIMO processor 230. The transceiver may be used by a processor (e.g., the controller / processor 240) and the memory 242 to perform aspects of any of the methods described herein (e.g., with reference to Figures 7A to 7C and / or Figures 8 to 11 ).

[0053] The controller / processor 240 of network node 110, the controller / processor 280 of UE 120, and / or Figure 2 any other component in may perform one or more techniques associated with CSI measurement configuration for a candidate cell in L1 and layer 2 (L2) mobility, as described in more detail elsewhere herein. For example, the controller / processor 240 of network node 110, the controller / processor 280 of UE 120, and / or Figure 2 any other component of may execute or direct, for example Figure 8 procedure 800 of, Figure 9 procedure 900 of, and / or the operation of other procedures as described herein. Memory 242 and memory 282 may store data and program code for network node 110 and UE 120, respectively. In some examples, memory 242 and / or memory 282 may include a non-transitory computer-readable medium storing one or more instructions for wireless communication (e.g., code and / or program code). For example, when the one or more instructions are executed by one or more processors of network node 110 and / or UE 120 (e.g., directly executed, or after compilation, conversion, and / or interpretation), the one or more processors, UE 120, and / or network node 110 may be caused to execute or direct, for example Figure 8 procedure 800 of, Figure 9 procedure 900 of, and / or the operation of other procedures as described herein. In some examples, executing the instructions may include running the instructions, converting the instructions, compiling the instructions, and / or interpreting the instructions, and so on.

[0054] In some aspects, UE 120 includes components for receiving, from network node 110, a CSI measurement configuration that configures one or more L1 measurements for a candidate cell; for obtaining, at least in part based on the CSI measurement configuration, one or more L1 measurements for the candidate cell; and / or for sending, to network node 110, an L1 measurement report indicating the one or more L1 measurements for the candidate cell. The components for UE 120 to perform the 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.

[0055] In some aspects, network node 110 includes components for sending to UE 120 a CSI measurement configuration that configures one or more L1 measurements for a candidate cell; and / or components for receiving from UE 120 an L1 measurement report indicating one or more L1 measurements for a candidate cell. The components for network node 110 to perform the operations described herein may include, for example, one or more of communication manager 150, transmit processor 220, TX MIMO processor 230, modem 232, antenna 234, MIMO detector 236, receive processor 238, controller / processor 240, memory 242, or scheduler 246.

[0056] Although Figure 2 the boxes in are illustrated as different components, the functions described above with respect to these boxes may be implemented in a single hardware, software, or combined component, or in various combinations of components. For example, the functions described with respect to transmit processor 264, receive processor 258, and / or TX MIMO processor 266 may be performed by or under the control of controller / processor 280.

[0057] As indicated above, Figure 2 is provided as an example. Other examples may be different from the examples described with respect to Figure 2 described.

[0058] The deployment of a communication system (such as a 5G NR system) can be arranged in various ways with various components or constituent parts. In a 5G NR system or network, network nodes, network entities, mobility elements of the network, RAN nodes, core network nodes, network elements, base stations, or network equipment can be implemented in a converged architecture or a decomposed architecture. For example, a base station (such as Node B (NB), evolved NB (eNB), NR base station, 5G NB, access point (AP), TRP, or cell, etc.) or one or more units (or one or more components) that perform base station functionality can be implemented as a converged base station (also referred to as a stand-alone base station or an integrated base station) or a decomposed base station. A "network entity" or "network node" may refer to a decomposed base station or one or more units of a decomposed base station (such as one or more CUs, one or more DUs, one or more RUs, or a combination thereof).

[0059] A centralized base station (e.g., a centralized network node) may be configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node (e.g., within a single device or unit). A split base station (e.g., a split network node) may be configured to utilize a protocol stack that is physically or logically distributed between two or more units (such as one or more CUs, one or more DUs, or one or more RUs). In some examples, a CU may be implemented within a network node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually spread across one or more other network nodes. A DU may be implemented to communicate with one or more RUs. Each of the CU, DU, and RU may also be implemented as a virtual unit, such as a virtual central unit (VCU), a virtual distributed unit (VDU), or a virtual radio unit (VRU), etc.

[0060] Base station type operations or network designs may consider the aggregation characteristics of base station functionality. For example, split base stations may be utilized in an IAB network, an open radio access network (O-RAN (such as a network configuration initiated by the O-RAN Alliance)), or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN)) to facilitate the scaling of a communication system by separating base station functionality into one or more units that can be deployed separately. A split base station may include functionality implemented across two or more units at various physical locations, as well as functionality implemented virtually for at least one unit, which can achieve flexibility in network design. Each unit of a split base station may be configured for wired or wireless communication with at least one other unit of the split base station.

[0061] Figure 3 FIG. is an illustration of an example split base station architecture 300 in accordance with the present disclosure. The split base station architecture 300 may include a CU 310 that may communicate directly with a core network 320 via a backhaul link, or indirectly with the core network 320 through one or more split control units (such as a near RT RIC 325 via an E2 link, or a non-RT RIC 315 associated with a service management and orchestration (SMO) framework 305, or both). The CU 310 may communicate with one or more DUs 330 via respective midhaul links (such as via an F1 interface). Each DU among the DUs 330 may communicate with one or more RUs 340 via a respective fronthaul link. Each RU among the RUs 340 may communicate with one or more UEs 120 via a respective radio frequency (RF) access link. In some embodiments, a UE 120 may be served simultaneously by multiple RUs 340.

[0062] Each unit in the unit (including CU 310, DU 330, RU 340) and the near RT RIC 325, non-RT RIC 315, and SMO framework 305 may include one or more interfaces or be coupled to one or more interfaces, and the one or more interfaces are configured to receive or transmit signals, data, or information (collectively referred to as signals) via a wired or wireless transmission medium. Each unit in the unit or the associated processor or controller that provides instructions to one or more communication interfaces of the corresponding unit may be configured to communicate with one or more units in other units via the transmission medium. In some examples, each unit in the unit may include a wired interface and a wireless interface. The wired interface is configured to receive signals or transmit signals to one or more units in other units via a wired transmission medium. The wireless interface may include a receiver, a transmitter, or a transceiver (such as an RF transceiver), and the wireless interface is configured to receive signals or transmit signals to one or more units in other units via a wireless transmission medium or both.

[0063] In some aspects, CU 310 may host one or more high-level control functions. Such control functions may include radio resource control (RRC) functions, packet data convergence protocol (PDCP) functions, or service data adaptation protocol (SDAP) functions, etc. Each control function may be implemented using an interface that is configured to convey signals with other control functions hosted by CU 310. CU 310 may be configured to handle user plane functionality (e.g., central unit-user plane (CU-UP) functionality), control plane functionality (e.g., central unit-control plane (CU-CP) functionality), or a combination thereof. In some specific implementations, CU 310 may be logically divided into one or more CU-UP units and one or more CU-CP units. When implemented in an O-RAN configuration, the CU-UP units may communicate bidirectionally with the CU-CP units via an interface (such as an E1 interface). As needed, CU 310 may be implemented to communicate with DU 330 for network control and signaling.

[0064] Each DU 330 may correspond to a logical unit that includes one or more base station functions for controlling the operation of one or more RUs 340. In some aspects, the DU 330 may host one or more of the radio link control (RLC) layer, the media access control (MAC) layer, and one or more high physical (PHY) layers, at least in part, according to a functional split (such as the functional split defined by 3GPP). In some aspects, one or more high PHY layers may be implemented by one or more modules for forward error correction (FEC) encoding and decoding, scrambling, and modulation and demodulation, etc. In some aspects, the DU 330 may also host one or more low PHY layers, such as implemented by one or more modules for fast Fourier transform (FFT), inverse FFT (iFFT), digital beamforming, or physical random access channel (PRACH) extraction and filtering, etc. Each layer (which may also be referred to as a module) may be implemented using an interface configured to communicate signals with other layers (and modules) hosted by the DU 330 or with control functions hosted by the CU 310.

[0065] Each RU 340 may implement low-layer functionality. In some deployments, the RU 340 controlled by the DU 330 may correspond to a logical node that hosts RF processing functions or low PHY layer functions, such as performing FFT, performing iFFT, digital beamforming, or PRACH extraction and filtering, etc., based on a functional split (e.g., the functional split defined by 3GPP) such as a low-layer functional split. In such an architecture, each RU 340 may be operated to handle over-the-air (OTA) communication with one or more UEs 120. In some embodiments, the real-time and non-real-time aspects of the control plane communication and user plane communication with the RU 340 may be controlled by the corresponding DU 330. In some scenarios, this configuration may enable each DU 330 and CU 310 to be implemented in a cloud-based RAN architecture, such as a vRAN architecture.

[0066] The SMO framework 305 can be configured to support the RAN deployment and orchestration of non-virtualized network elements and virtualized network elements. For non-virtualized network elements, the SMO framework 305 can be configured to support the deployment of dedicated physical resources for RAN coverage requirements, and these dedicated physical resources can be managed via operation and maintenance interfaces (such as the O1 interface). For virtualized network elements, the SMO framework 305 can be configured to interact with a cloud computing platform (such as the Open Cloud (O-Cloud) platform 390) to perform network element lifecycle management (such as instantiating virtualized network elements) via a cloud computing platform interface (such as the O2 interface). Such virtualized network elements can include, but are not limited to, CU 310, DU 330, RU 340, non-RT RIC 315, and near-RT RIC 325. In some specific implementations, the SMO framework 305 can communicate with the hardware aspect of the 4G RAN (such as the Open eNB (O-eNB) 311) via the O1 interface. Additionally, in some specific implementations, the SMO framework 305 can directly communicate with each RU in one or more RUs 340 via the corresponding O1 interface. The SMO framework 305 may also include a non-RT RIC 315 configured to support the functionality of the SMO framework 305.

[0067] The non-RT RIC 315 can be configured to include a logical function that can enable non-real-time control and optimization of RAN elements and resources, artificial intelligence / machine learning (AI / ML) workflows including model training and update, or policy-based guidance of applications / features in the near-RT RIC 325. The non-RT RIC 315 can be coupled to or communicate with the near-RT RIC 325 (such as via the A1 interface). The near-RT RIC 325 can be configured to include a logical function that enables near-real-time control and optimization of RAN elements and resources through an interface (such as via the E2 interface) via data collection and actions, and this interface connects one or more CUs 310, one or more DUs 330, or both, and the O-eNB to the near-RT RIC 325.

[0068] In some specific implementations, to generate the AI / ML models to be deployed in the near RT RIC 325, the non-RT RIC 315 may receive parameters or external enrichment information from an external server. Such information can be utilized by the near RT RIC 325 and can be received from non-network data sources or from network functions at the SMO framework 305 or the non-RT RIC 315. In some examples, the non-RT RIC 315 or the near RT RIC 325 may be configured to tune RAN behavior or performance. For example, the non-RT RIC 315 may monitor long-term trends and patterns of performance and employ an AI / ML model to perform corrective actions through the SMO framework 305 (such as reconfiguration via the O1 interface) or via the creation of RAN management policies (such as A1 interface policies).

[0069] As indicated above, Figure 3 is provided as an example. Other examples may be different from the examples described with respect to Figure 3 those described.

[0070] Figure 4 is a diagram illustrating an example of a make-before-break (MBB) handover process according to the present disclosure.

[0071] As Figure 4 shown, the MBB handover process may involve a UE 405, a source network node 410, a target network node 415, a user plane function (UPF) device 420, and an access and mobility management function (AMF) device 425. In some examples, actions described as being performed by a network node may be performed by multiple network nodes. For example, configuration actions and / or core network communication actions may be performed by a first network node (e.g., a CU or a DU), and radio communication actions may be performed by a second network node (e.g., a DU or an RU). The UE 405 may correspond to the UE 120 described elsewhere herein. The source network node 410 and / or the target network node 415 may correspond to the network node 110 described elsewhere herein. The UPF device 420 and / or the AMF device 425 may correspond to the network controller 130 described elsewhere herein. The UE 405 and the source network node 410 may be connected via a serving cell or a source cell (e.g., may have an RRC connection), and the UE 405 may undergo a handover via a target cell to the target network node 415. The UPF device 420 and / or the AMF device 425 may be located within the core network. The source network node 410 and the target network node 415 may communicate with the core network for mobility support and user plane functions.

[0072] As Figure 4As shown, the MBB handover process may include a handover preparation phase 430, a handover execution phase 435, and a handover completion phase 440. During the handover preparation phase 430, the UE 405 may report measurements that cause the source network node 410 and / or the target network node 415 to prepare for the handover and trigger the execution of the handover. During the handover execution phase 435, the UE 405 may perform the handover by performing a random access procedure with the target network node 415 and establishing an RRC connection with the target network node 415. During the handover completion phase 440, the source network node 410 may forward the stored communication associated with the UE 405 to the target network node 415, and the UE 405 may be released from the connection with the source network node 410.

[0073] As indicated by reference numeral 445, during the handover preparation phase 430, the UE 405 may perform one or more measurements and may send a measurement report to the source network node 410 based at least in part on the one or more measurements (e.g., serving cell measurements and / or neighboring cell measurements). The measurement report may indicate, for example, RSRP parameters, RSRQ parameters, RSSI parameters, and / or signal-to-interference-plus-noise ratio (SINR) parameters (e.g., for the serving cell and / or one or more neighboring cells). The source network node 410 may use the measurement report to determine whether to trigger a handover to the target network node 415. For example, if one or more measurements meet the criteria, the source network node 410 may trigger a handover of the UE 405 to the target network node 415.

[0074] As indicated by reference numeral 450, during the handover preparation phase 430, the source network node 410 and the target network node 415 may communicate with each other to prepare for the handover of the UE 405. As part of the handover preparation, the source network node 410 may send a handover request to the target network node 415 to command the target network node 415 to prepare for the handover. The source network node 410 may convey RRC context information associated with the UE 405 and / or configuration information associated with the UE 405 to the target network node 415. The target network node 415 may prepare for the handover by reserving resources for the UE 405. After reserving the resources, the target network node 415 may send an acknowledgement (ACK) to the source network node 410 in response to the handover request.

[0075] As indicated by reference numeral 455, during the handover preparation phase 430, the source network node 410 may send an RRC reconfiguration message to the UE 405. The RRC reconfiguration message may include a handover command instructing the UE 405 to perform a handover process from the source network node 410 to the target network node 415. The handover command may include information associated with the target network node 415, such as a random access channel (RACH) preamble assignment for accessing the target network node 415. The reception of the RRC reconfiguration message including the handover command by the UE 405 may trigger the start of the handover execution phase 435.

[0076] As indicated by reference numeral 460, during the handover execution phase 435, the UE 405 may perform the handover by continuing to communicate with the source network node 410 while performing a random access procedure with the target network node 415 (e.g., including synchronization with the target network node 415). For example, when the UE 405 performs a random access procedure with the target network node 415, the UE 405 may send uplink data, uplink control information, or uplink reference signals (e.g., sounding reference signals (SRS)) to the source network node 410, and / or may receive downlink data, downlink control information (DCI), and / or downlink reference signals from the source network node 410.

[0077] As indicated by reference numeral 465, during the handover execution phase 435, after successfully establishing a connection with the target network node 415 (e.g., via a random access procedure), the UE 405 may send an RRC reconfiguration complete message to the target network node 415. The reception of the RRC reconfiguration message by the target network node 415 may trigger the start of the handover completion phase 440.

[0078] As indicated by reference numeral 470, during the handover completion phase 440, the source network node 410 and the target network node 415 may communicate with each other to prepare for releasing the connection between the source network node 410 and the UE 405. In some aspects, such as after receiving an RRC reconfiguration message from the UE 405, the target network node 415 may determine that the connection between the source network node 410 and the UE 405 is to be released. In such a case, the target network node 415 may send a handover connection setup complete message to the source network node 410. The handover connection setup complete message may cause the source network node 410 to stop sending data to the UE 405 and / or stop receiving data from the UE 405. Additionally or alternatively, the handover connection setup complete message may cause the source network node 410 to forward communications associated with the UE 405 to the target network node 415 and / or notify the target network node 415 of the status of one or more communications with the UE 405. For example, the source network node 410 may forward buffered downlink communications (e.g., downlink data) for the UE 405 and / or uplink communications received from the UE 405 (e.g., uplink data) to the target network node 415. Additionally or alternatively, the source network node 410 may notify the target network node 415 of the PDCP status associated with the UE 405 and / or the sequence number to be used for downlink communications with the UE 405.

[0079] As indicated by reference numeral 475, during the handover completion phase 440, the target network node 415 may send an RRC reconfiguration message to the UE 405 to command the UE 405 to release the connection with the source network node 410. When receiving an instruction to release the connection with the source network node 410, the UE 405 may stop communicating with the source network node 410. For example, the UE 405 may avoid sending uplink communications to the source network node 410 and / or may avoid monitoring downlink communications from the source network node 410.

[0080] As indicated by reference numeral 480, during the handover completion phase 440, the UE may send an RRC reconfiguration complete message to the target network node 415 to indicate that the connection between the source network node 410 and the UE 405 is being released or has been released.

[0081] As shown by reference numeral 485, during the handover completion phase 440, the target network node 415, the UPF device 420, and / or the AMF device 425 may communicate to switch the user plane path of the UE 405 from the source network node 410 to the target network node 415. Before switching the user plane path, the downlink communication for the UE 405 may be routed through the core network to the source network node 410. After the user plane path is switched, the downlink communication for the UE 405 may be routed through the core network to the target network node 415. When the switching of the user plane path is completed, the AMF device 425 may send an end marker message to the source network node 410 to inform the completion of the user plane path switching. As shown by reference numeral 490, the target network node 415 and the source network node 410 may communicate to release the source network node 410.

[0082] As part of the MBB handover process, the UE 405 may maintain a simultaneous connection with the source network node 410 and the target network node 415 during the time period 495. The time period 495 may start at the beginning of the handover execution phase 435 when the UE 405 performs a random access procedure with the target network node 415 (e.g., after the UE 405 receives a handover command from the source network node 410). The time period 495 may end when the connection between the UE 405 and the source network node 410 is released (e.g., when the UE 405 receives an instruction from the target network node 415 to release the source network node 410). By maintaining a simultaneous connection with the source network node 410 and the target network node 415, the handover process can be performed with zero or minimal communication interruption, thereby reducing latency.

[0083] As indicated above, Figure 4 is provided as an example. Other examples may be different from the example Figure 4 described.

[0084] Figures 5A to 5B is a diagram illustrating examples 500, 550 of L1 / L2 inter-cell mobility according to the present disclosure.

[0085] In a wireless network, a UE and a network node may communicate on an access link using directional links (e.g., using high-dimensional phased arrays) to benefit from beamforming gain and / or maintain acceptable communication quality. However, directional links typically require fine alignment of the transmit and receive beams, which can be achieved through a set of operations such as beam management and / or beam selection. Additionally, a wireless network may support multi-beam operation at relatively high carrier frequencies (e.g., within FR2 or FR4), which may be associated with more challenging propagation conditions compared to relatively low carrier frequencies. For example, signals propagating in the millimeter wave band may suffer increased path loss and severe channel intermittency, and / or may be blocked by objects common in the UE's environment (e.g., buildings, trees, and / or the user's body, etc.) relative to a band below 6 gigahertz (GHz) (e.g., FR1). Thus, beam management is particularly important for multi-beam operation at relatively high carrier frequencies.

[0086] One possible enhancement for multi-beam operation at higher carrier frequencies is to facilitate efficient (e.g., low latency and low overhead) downlink and / or uplink beam management to support higher L1 / L2-centric inter-cell mobility. Thus, an objective of L1 / L2-centric inter-cell mobility is to enable a UE to perform a cell handover via dynamic control signaling at a lower layer (e.g., DCI for L1 signaling or MAC control element (MAC-CE) for L2 signaling) rather than semi-static layer 3 (L3) RRC signaling to reduce latency, reduce overhead, and / or otherwise increase the efficiency of cell handover.

[0087] For example, Figure 5A Example 500 illustrates an example of a first L1 / L2 inter-cell mobility technique, which may be referred to as beam-based inter-cell mobility, dynamic point selection-based inter-cell mobility, and / or non-serving cell-based inter-cell mobility, etc. As described in further detail herein, the first L1 / L2 inter-cell mobility technique may enable a network node to use L1 signaling (e.g., DCI) or L2 signaling (e.g., MAC-CE) to indicate to the UE that it will communicate on the access link using beams from a serving cell or a non-serving cell. For example, in a wireless network that does not support L1 / L2 inter-cell mobility (e.g., cell handover is triggered only through an L3 handover), beam selection for control information and for data is typically limited to beams within the physical cell identity (PCI) associated with the serving cell. In contrast, in a wireless network that supports the first L1 / L2 inter-cell mobility technique (e.g., as Figure 5A shown), beam selection for control and data can be extended to include any beam within a serving cell 510 or one or more non-serving neighboring cells 515 configured for L1 / L2 inter-cell mobility.

[0088] For example, in Figure 5A the first L1 / L2 inter-cell mobility technique shown in Figure 5A , a UE may be configured with a single serving cell 510 and may be further configured with a set of neighboring cells including one or more non-serving cells 515 configured for L1 / L2 inter-cell mobility. Generally, the serving cell 510 and the non-serving cells 515 configured for L1 / L2 inter-cell mobility may be associated with a common CU and a common DU, or the serving cell 510 and the non-serving cells 515 configured for L1 / L2 inter-cell mobility may be associated with a common CU and different DUs. In some aspects, as indicated by reference numeral 520, a network node may use L1 / L2 signaling (e.g., DCI or MAC-CE) to trigger L1 / L2 inter-cell mobility of the UE, and the L1 / L2 signaling indicates that the selected transmission configuration indicator (TCI) state is in quasi-co-location (QCL) with a reference signal (e.g., a synchronization signal block (SSB)) associated with a PCI. For example, in Figure 5A , the UE may communicate with the serving cell 510 using a TCI state in QCL with an SSB from a PCI associated with the serving cell 510 (e.g., shown as PCI 1 in Figure 5A ), and the L1 / L2 signaling may trigger inter-cell mobility by instructing the UE to switch to communicate using a TCI state in QCL with an SSB from a PCI associated with a non-serving neighboring cell 515 (e.g., shown as PCI 2 in Figure 5A ). Thus, in the first L1 / L2 inter-cell mobility technique, a network node (e.g., a common CU controlling the serving cell 510 and the non-serving neighboring cell 415) may use L1 / L2 signaling to select a beam from the serving cell 510 or the non-serving neighboring cell 515 to serve the UE.

[0089] In this way, compared to restricting L1 / L2 beam selection to the beams within the serving cell 510, the first L1 / L2 inter-cell mobility technique may be more robust against blockage and may provide more opportunities for higher-rank spatial multiplexing across different cells. However, the first L1 / L2 inter-cell mobility technique cannot support changing the special cell (SpCell) of the UE, where the SpCell may be a primary cell (PCell) or a primary-secondary cell (PSCell). Instead, in the first L1 / L2 inter-cell mobility technique, triggering a SpCell change is performed using RRC signaling via a legacy L3 handover. In this regard, the first L1 / L2 inter-cell mobility technique is associated with the following limitation: when the UE is in the coverage area of the serving cell 510, L1 / L2 signaling can only be used to indicate beams from the serving cell 510 or the configured neighboring cells 515 (e.g., because L1 / L2 signaling cannot be used to change the PCell or PSCell). Therefore,Figure 5B Example 550 illustrates a second L1 / L2 inter-cell mobility technique, which may be referred to as serving cell-based inter-cell mobility, etc. As described in further detail herein, the second L1 / L2 inter-cell mobility technique may enable a network node to use L1 / L2 signaling (e.g., DCI or MAC-CE) to indicate control information associated with an active set of cells and / or a deactivated set of cells and / or to indicate a change to an SPCell within the active set of cells.

[0090] For example, as Figure 5B shown, the second L1 / L2 inter-cell mobility technique may use a mechanism generally similar to carrier aggregation to implement L1 / L2 inter-cell mobility, except that different cells configured for L1 / L2 inter-cell mobility may be on the same carrier frequency. As Figure 5B shown, a network node may configure a set of cells 560 for L1 / L2 inter-cell mobility (e.g., using RRC signaling). As further shown, the active set of cells 565 may include one or more cells within the configured set of cells 560 that are activated and ready for data and / or control transfer. Thus, in the second L1 / L2 inter-cell mobility technique, the deactivated set of cells may include one or more cells that are included in the set of cells 560 configured for L1 / L2 inter-cell mobility but not included in the active set of cells 565. However, by using L1 / L2 signaling, the cells included in the deactivated set of cells can be easily activated and thereby added to the active set of cells 565. Thus, as indicated by reference numeral 570, L1 / L2 signaling may be used for mobility management of the active set of cells 565. For example, in some aspects, L1 / L2 signaling may be used to activate a cell within the configured set of cells 560 (e.g., add a cell to the active set of cells 565), deactivate a cell within the active set of cells 565, and / or select a beam within a cell included in the active set of cells 565. In this way, the second L1 / L2 inter-cell mobility technique may use L1 / L2 signaling (e.g., using beam management techniques) to achieve seamless mobility between the cells included in the active set of cells 565.

[0091] In addition, as indicated by reference numeral 575, the second L1 / L2 inter-cell mobility technique enables the use of L1 / L2 signaling to set or change the SpCell (e.g., PCell or PSCell) in a cell included in the active cell set 565. Additionally or alternatively, when the cell to become the new SpCell is in the deactivated cell set (e.g., included in the cell set 560 configured for L1 / L2 mobility but not included in the active cell set 565), L1 / L2 signaling can be used to move the cell from the deactivated cell set to the active cell set 565 before further L1 / L2 signaling is used to set the cell as the new SpCell. However, in the second L1 / L2 inter-cell mobility technique, when the new SpCell is not included in the cell set 560 configured for L1 / L2 inter-cell mobility, an L3 handover (e.g., using RRC signaling) is used to change the SpCell. In such cases, the RRC signaling associated with the L3 handover can be used to update the cells included in the cell set 560 configured for L1 / L2 inter-cell mobility. Thus, L1 / L2 inter-cell mobility can provide more efficient cell handovers to support multi-beam operation, thereby achieving lower latency and reduced overhead by using L1 signaling (e.g., DCI) and / or L2 signaling (e.g., MAC-CE) instead of L3 signaling (e.g., RRC) to change the beam used by the UE to communicate on the access link.

[0092] As indicated above, Figures 5A to 5B is provided as an example. Other examples may be different from those Figures 5A to 5B described with respect to

[0093] Figure 6 is a diagram illustrating examples 600, 610, 620 of cell updates in an L1 / L2 inter-cell mobility scenario according to the present disclosure. As Figure 6 shown, examples 600, 610, 620 include communication between a UE (e.g., UE 120 or UE 405) and one or more network nodes (e.g., one or more network nodes providing a source cell and / or a target cell in an inter-cell mobility scenario, such as network node 110, network node 410, network node 415, etc.). In some aspects, the UE and the network nodes may communicate in a wireless network such as wireless network 100. The UE and the network nodes may communicate via a wireless access link, which may include an uplink and a downlink. Additionally, as described herein, the wireless network in which the UE and the network nodes communicate may support one or more L1 / L2 inter-cell mobility techniques. For example, the wireless network may support the beam-based or non-serving cell-based L1 / L2 inter-cell mobility techniques described above with reference to Figure 5A described, the beam-based or non-serving cell-based L1 / L2 inter-cell mobility techniques described above with reference toFigure 5B The described serving cell-based L1 / L2 inter-cell mobility techniques or combinations thereof.

[0094] In some aspects, as described herein, Examples 600, 610, 620 are related to different scenarios where L1 signaling (e.g., DCI message) or L2 signaling (e.g., MAC-CE) is used to indicate a change to a serving cell or serving cell group (e.g., a change from a source cell to a target cell). For example, as described in further detail herein, Examples 600, 610, 620 are generally related to different scenarios where L1 / L2 signaling can be used to dynamically switch between candidate serving cells (e.g., including special cells (SpCells), which can be a PCell or PSCell, and / or SCell).

[0095] As Figure 6 shown, and by way of Example 600, a network node may configure a UE with a set of candidate SpCells including various candidate SpCells to enable individual SpCell selection in a first L1 / L2 inter-cell mobility scenario where separate signaling is used to indicate a SpCell change for carrier aggregation or dual connectivity. For example, the UE may communicate with a source SpCell (shown as the old SpCell), and the serving SpCell may be switched to a target SpCell (shown as the new SpCell) corresponding to a candidate SpCell included in the set of candidate SpCells. Thus, in Example 600, L1 / L2 signaling can be used to select a single SpCell among various candidate SpCells in a pre-configured set of candidate SpCells without carrier aggregation or dual connectivity (e.g., the set of candidate SpCells does not include any SCell). In such a case, the new SpCell may be selected based on beam indication, and the selection of SCell may be based on legacy (e.g., L3) signaling or separate L1 / L2 signaling. Additionally or alternatively, as shown by Example 610, the UE may be configured with a set of candidate SpCells, and the SpCell may be changed from a source cell to a target cell by swapping the roles of the SpCell and SCell between the cells included in the set of candidate SpCells (e.g., in a carrier aggregation or dual connectivity scenario). For example, as by Figure 6As shown in Example 610, the current SpCell can be swapped with the current SCell, such that the old SpCell becomes the new SCell and the old SCell becomes the new SpCell. Additionally or alternatively, as shown by Example 620, the UE can be configured with a candidate cell group, which can enable the SpCell (e.g., PCell or PSCell) and SCell to be switched together in a carrier aggregation or dual connectivity scenario. For example, in such a case, a cell group including multiple cells can be activated or deactivated together using L1 / L2 signaling, where the current serving cell can be selected from the current cell group and the current serving cell can be selected from the new cell group based on the mobility of the UE. In such a case, the L1 / L2 signaling for changing the cell group can be similar to Examples 600 and 610, except that the L1 / L2 signaling for handover can include a cell group including multiple cells instead of a single cell.

[0096] Generally, in Examples 600, 610, 620, the L1 / L2 signaling for switching the serving cell of the UE can be based on one or more L1 measurements obtained and reported by the UE. For example, a network node can configure the UE to obtain L1-RSRP measurements, L1-RSRQ measurements, L1-SINR measurements, and / or other suitable intra-frequency and / or inter-frequency measurements for one or more candidate cells (e.g., target cells, candidate SpCells, and / or candidate SCells), and the UE can send an L1 report including the L1 measurements to the network node to enable L1 / L2 inter-cell mobility. However, the current wireless communication standards and / or protocols are not clear regarding how to configure and report L1 measurements for candidate cells for L1 / L2 mobility. Thus, some aspects described herein relate to techniques for configuring L1 measurements and L1 reports for candidate cells to support L1 / L2 mobility. In this way, some aspects described herein can be used to configure L1 measurements and L1 reports for candidate cells such that the L1 measurements can be used to trigger inter-cell mobility using L1 signaling (e.g., DCI) and / or L2 signaling (e.g., MAC-CE), which can reduce handover latency and provide other potential advantages as discussed above.

[0097] As indicated above, Figure 6 is provided as an example. Other examples may be different from the examples Figure 6 described.

[0098] Figures 7A to 7C is a diagram illustrating Example 700 according to the present disclosure associated with the configuration of CSI measurements for candidate cells in L1 / L2 mobility. As Figure 7AAs shown, example 700 includes communication between a UE (e.g., UE 120 or UE 405) and one or more network nodes (e.g., one or more network nodes providing an active cell and / or candidate cells in an inter-cell mobility scenario, such as network node 110, network node 410, network node 415, etc.). In some aspects, the UE and the network nodes may communicate in a wireless network such as wireless network 100. The UE and the network nodes may communicate via a radio access link, which may include an uplink and a downlink. Additionally, as described herein, the wireless network in which the UE and the network nodes communicate may support one or more L1 / L2 inter-cell mobility techniques.

[0099] As Figure 7A shown, and by reference numeral 710, the UE may send information related to the UE's ability to obtain L1 measurements for one or more candidate cells and / or report L1 measurements for the one or more candidate cells to the network node providing the active serving cell for the UE. For example, in some aspects, the UE capability information may indicate the maximum number of additional cells or candidate cells (e.g., in addition to the active cell) that the UE supports for inter-cell beam management. For example, in some aspects, the UE capability may indicate the maximum number of additional cells or candidate cells that the UE supports for intra-frequency beam management and / or the maximum number of additional cells or candidate cells that the UE supports for inter-frequency beam management, and these maximum numbers may have the same value or different values (e.g., up to seven (7) candidate cells for intra-frequency inter-cell beam management or up to eight (8) candidate cells for inter-frequency inter-cell beam management). Additionally or alternatively, the UE capability information may indicate the maximum number of channel measurement resources (CMRs) and / or interference measurement resources (IMRs) reference signals that can be configured for L1 measurements by the UE for each candidate cell. For example, in some aspects, the UE capability may indicate the maximum number of CMRs and / or IMRs reference signals that the UE can measure from candidate cells for intra-frequency and / or inter-frequency beam management, and these maximum numbers may have the same value or different values (e.g., up to sixty-four (64) CMRs and / or IMRs reference signals for intra-frequency inter-cell beam management or up to thirty-two (32) CMRs and / or IMRs reference signals for inter-frequency inter-cell beam management). Additionally or alternatively, the UE capability information may indicate whether the UE supports reporting L1-SINR measurements for one or more candidate cells.

[0100] As Figure 7AFurther shown, and by reference numeral 720, a network node providing the serving cell to the UE may send an L1 measurement configuration for the serving cell and one or more candidate cells, and the UE may receive the L1 measurement configuration. For example, as described herein, the L1 measurement configuration may be at least partially based on information related to the UE's capabilities for obtaining and / or reporting L1 measurements (e.g., depending on the maximum number of candidate cells, the maximum number of CMR reference signals, the maximum number of IMR reference signals, and / or L1-SINR measurements supported by the UE). Thus, as described herein, the L1 measurement configuration may enable the UE to obtain L1 measurements for one or more candidate cells to support inter-cell mobility that may be triggered by L1 / L2 signaling (e.g., DCI and / or MAC-CE).

[0101] For example, referring Figure 7B , reference numeral 722 depicts an example in which an L1 measurement configuration for a candidate cell may be configured on the serving cell, and the L1 measurement configuration includes CSI measurement configurations for both the serving cell and one or more candidate cells. For example, as shown, the serving cell configuration associated with the serving cell (e.g., indicated in the ServingCellConfig parameter) may include a CSI measurement configuration, and the CSI measurement configuration may configure in-band reference signals for the serving cell and in-band or inter-band reference signals for one or more candidate cells. For example, as shown, the serving cell configuration for the serving cell includes a CSI measurement configuration (e.g., configuring CMR for L1-RSRP or L1-RSRQ measurements, or CMR and IMR for L1-SINR measurements), and the CSI measurement configuration associated with the serving cell may include an in-band reference signal configuration for the serving cell and an in-band or inter-band reference signal configuration for one or more candidate cells. In some aspects, in the case where the CSI measurement configuration indicates one or more inter-band reference signals, the CSI measurement configuration for a non-serving (e.g., candidate) cell may include frequency information and / or an SSB measurement timing configuration (SMTC) window or a measurement gap (MG) during which the UE obtains L1 measurements from the corresponding candidate cell. Based on the CSI measurement configuration, the UE may be scheduled using an L1 measurement report of uplink control information (UCI) for mobility triggered by L1 / L2 signaling. For example, the L1 measurement report for one or more candidate cells may be sent as a semi-persistent report on the PUSCH and / or an aperiodic report on the PUSCH. Additionally, in a single reporting instance, the L1 measurement report may include in-band measurements and / or inter-band measurements for the serving cell and one or more candidate cells.

[0102] Alternatively, still referring Figure 7B, reference label 724 depicts an example where an L1 measurement configuration for a candidate cell can be configured on an active cell, and the L1 measurement configuration includes independent CSI measurement configurations for the active cell and the candidate cell. For example, as shown, the serving cell configuration associated with the active cell may include a first CSI measurement configuration for configuring an in-band reference signal for the active cell and a second CSI measurement configuration for configuring an inter-band reference signal for at least one candidate cell. In this case, an independent CSI measurement configuration for at least one candidate cell can be provided on the active serving cell, where the independent CSI measurement configuration for the candidate cell is decoupled from the L1 measurement configuration for the active cell. For example, in the case of configuring independent CMR reference signals in the active cell and at least one candidate cell, the L1 measurement resource set can be configured separately from the configuration associated with the candidate cell (e.g., in the ServingCellConfig and / or CellGroupConfig parameters).

[0103] Alternatively, still referring to Figure 7B , reference label 726 depicts an example where the L1 measurement configuration for a candidate cell is configured separately from the L1 measurement configuration for the active cell. For example, as shown, the first serving cell configuration associated with the active cell may include a first CSI measurement configuration for configuring an in-band reference signal for the active cell, and the second serving cell configuration associated with the candidate cell may include a second CSI measurement configuration for configuring an in-band or inter-band reference signal for the candidate cell. In this case, CSI measurement configurations can be provided separately for the active serving cell and the candidate cell, where the L1 measurement resources for the candidate cell set can be configured inside or within the configuration associated with the candidate cell (e.g., in the ServingCellConfig and / or CellGroupConfig parameters). In some aspects, the L1 measurement configuration for each candidate cell can be configured separately from any L1 measurement configuration for the active cell. CSI measurement configurations can be provided separately for the active serving cell and each candidate cell, where the L1 measurement resources for each candidate cell set can be configured inside or within the configuration associated with the candidate cell (e.g., in the ServingCellConfig and / or CellGroupConfig parameters).

[0104] Alternatively, still referring to Figure 7B, reference label 728 depicts an example where the L1 measurement configuration for the active cell does not include reference signal information or cell information for the L1 measurements to be obtained by the UE. Instead, as shown, the serving cell configuration associated with the active cell includes a CSI measurement configuration that configures an SMTC window for L1-based measurements for one or more SSBs. In this case, the UE can measure one or more intra-frequency SSB transmissions from the active cell and / or one or more intra-frequency or inter-frequency SSB transmissions from one or more candidate cells during the SMTC window. For example, as described herein, the UE can measure one or more SSBs detected during the SMTC window and can identify one or more PCIs associated with the one or more SSBs detected during the SMTC window, and the one or more PCIs can then be reported to a network node associated with the active serving cell. In some aspects, for intra-frequency measurements associated with the active serving cell, the CSI measurement configuration included in the serving cell configuration neither includes an SSB or reference signal index nor PCI information, and the UE can search for PCIs for SSB transmissions detected during the SMTC window. Additionally or alternatively, for inter-frequency measurements associated with a candidate serving cell, the CSI measurement configuration included in the serving cell configuration neither includes an SSB or reference signal index nor PCI information, but frequency information for the candidate cell is configured, whereby the UE can use the frequency information to search for PCIs for SSB transmissions detected during the SMTC window.

[0105] Referring again to Figure 7A , as indicated by reference label 730, the network node providing the active cell to the UE can send an L1 reporting configuration for the active cell and one or more candidate cells, and the UE can receive the L1 reporting configuration. For example, as described herein, the L1 reporting configuration can be at least partially based on information related to the UE's capabilities for reporting L1 measurements (e.g., depending on the maximum number of candidate cells, the maximum number of CMR reference signals, the maximum number of IMR reference signals, and / or the measurements that the UE is capable of reporting in an L1 measurement report).

[0106] For example, referring to Figure 7C, reference numeral 732 depicts an example where an L1 reporting configuration for a candidate cell can be configured on an active cell, and the L1 reporting configuration includes CSI reporting configurations for both the active cell and one or more candidate cells. For example, as shown, the serving cell reporting configuration associated with the active cell (e.g., indicated in the ServingCellConfig parameter) can include a CSI reporting configuration, and the CSI reporting configuration can configure CSI reporting for the active cell and CSI reporting for the candidate cell. For example, as shown, the serving cell configuration for the active cell includes a CSI reporting configuration, and the CSI reporting configuration associated with the active cell can include a first CSI reporting configuration for the active cell and a second CSI reporting configuration for the candidate cell.

[0107] Alternatively, still referring to Figure 7C , reference numeral 734 depicts an example where an L1 reporting configuration for a candidate cell can be configured on an active cell, and the L1 reporting configuration includes independent CSI reporting configurations for the active cell and the candidate cell. For example, as shown, the serving cell configuration associated with the active cell can include a first CSI reporting configuration for configuring a first CSI report for the active cell and a second CSI reporting configuration for configuring a second CSI report for the candidate cell. In this case, an independent CSI reporting configuration for the candidate cell can be provided on the active serving cell, where the independent CSI reporting configuration for the candidate cell is decoupled from the L1 reporting configuration for the active cell. For example, in the case of configuring independent CSI reports in the active cell and the candidate cell, the L1 measurement report can be configured separately from the configuration associated with the candidate cell (e.g., in the ServingCellConfig and / or CellGroupConfig parameters).

[0108] Alternatively, still referring to Figure 7C, reference numeral 736 depicts an example where the L1 reporting configuration for a candidate cell is configured separately from the L1 reporting configuration for an active cell. For example, as shown, the first serving cell configuration associated with the active cell may include a first CSI reporting configuration for configuring a first CSI report for the active cell, and the second serving cell configuration associated with the candidate cell may include a second CSI reporting configuration for configuring a second CSI report for the candidate cell. In this case, the CSI reporting configuration may be provided separately for the active serving cell and the candidate cell, where the L1 measurement resources for the set of candidate cells may be configured inside or within the configuration associated with the candidate cell (e.g., in the ServingCellConfig and / or CellGroupConfig parameters). In some aspects, the L1 reporting configuration for each candidate cell may be configured separately from any L1 reporting configuration for the active cell. The CSI reporting configuration may be provided separately for the active serving cell and each candidate cell, where the L1 reports for each set of candidate cells may be configured inside or within the configuration associated with the candidate cell (e.g., in the ServingCellConfig and / or CellGroupConfig parameters).

[0109] Alternatively, in some aspects, the L1 reporting configuration provided by a network node associated with the active cell may not include any L1 reporting configuration for the candidate cell. In this case, the L1 measurement report including the L1 measurements for the candidate cell may be carried in the MAC-CE.

[0110] In some aspects, referring again to Figure 7A, as indicated by reference numeral 740, the UE may obtain one or more L1 measurements for a candidate cell based on an L1 measurement configuration provided by a network node associated with the serving cell. For example, in the case where the L1 measurement configuration indicates one or more CMR reference signals, the UE may monitor and / or measure one or more CMR reference signals from the candidate cell to obtain L1 measurements for the candidate cell, such as L1-RSRP measurements and / or L1-RSRQ measurements, etc. Additionally or alternatively, in the case where the UE supports L1-SINR measurements used as beam metrics in L1 / L2 inter-cell mobility, the L1 measurement configuration provided by the network node associated with the serving cell may indicate IMR reference signals in addition to CMR reference signals. For example, in L1-SINR measurements, the UE may be configured to measure CMR reference signals to determine the "signal" component of the L1-SINR measurement, and may measure IMR reference signals to determine the "interference" and / or "interference plus noise" components of the L1-SINR measurement. In such cases, the CMR reference signal may include a non-zero power (NZP) CSI reference signal (CSI-RS) (NZP CSI-RS), and the IMR reference signal may include the same NZP CSI-RS as the CMR reference signal, a different NZP CSI-RS, or a zero power (ZP) CSI-RS. Additionally or alternatively, the CMR reference signal may include an SSB, and the IMR reference signal may include a ZP CSI-RS or an NZP CSI-RS. In any case, as indicated by reference numeral 750, the UE may send an L1 measurement report including the L1 measurements associated with the candidate cell to the network node associated with the serving cell, and the serving cell may use the L1 measurements carried in the L1 measurement report to determine whether to trigger L1 mobility or L2 mobility of the UE (e.g., send DCI or MAC-CE to trigger a handover to the candidate cell in the case where the L1 measurements carried in the L1 measurement report meet one or more conditions).

[0111] As indicated above, Figures 7A to 7C is provided as an example. Other examples may be different from those described with respect to Figures 7A to 7C what is described.

[0112] Figure 8 is a diagram illustrating an example process 800 performed, for example, by a UE in accordance with the present disclosure. Example process 800 is an example in which a UE (e.g., UE 120) performs operations associated with CSI measurement configuration for a candidate cell in L1 / L2 mobility.

[0113] As Figure 8As shown, in some aspects, process 800 may include: receiving, from a network node, a CSI measurement configuration that configures one or more L1 measurements for a candidate cell (block 810). For example, a UE (e.g., using Figure 10 the depicted communication manager 140 and / or receiving component 1002) may receive, from a network node, a CSI measurement configuration that configures one or more L1 measurements for a candidate cell, as described above.

[0114] As Figure 8 further shown, in some aspects, process 800 may include: obtaining, at least in part based on the CSI measurement configuration, one or more L1 measurements for the candidate cell (block 820). For example, a UE (e.g., using Figure 10 the depicted communication manager 140 and / or L1 measurement component 1008) may obtain, at least in part based on the CSI measurement configuration, one or more L1 measurements for the candidate cell, as described above.

[0115] As Figure 8 further shown, in some aspects, process 800 may include: sending, to the network node, an L1 measurement report indicating one or more L1 measurements for the candidate cell (block 830). For example, a UE (e.g., using Figure 10 the depicted communication manager 140 and / or sending component 1004) may send, to the network node, an L1 measurement report indicating one or more L1 measurements for the candidate cell, as described above.

[0116] Process 800 may include additional aspects, such as any individual aspect or any combination of aspects described below and / or in connection with one or more other processes described elsewhere herein.

[0117] In a first aspect, the CSI measurement configuration is included in a serving cell configuration associated with an active serving cell.

[0118] In a second aspect, alone or in combination with the first aspect, the CSI measurement configuration configures one or more L1 measurements for the active serving cell.

[0119] In a third aspect, alone or in combination with one or more of the first and second aspects, the CSI measurement configuration is a first CSI measurement configuration that is independent of a second CSI measurement configuration that configures one or more L1 measurements for the active serving cell.

[0120] In a fourth aspect, alone or in combination with one or more of the first through third aspects, the CSI measurement configuration is included in a serving cell configuration associated with the candidate cell.

[0121] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the CSI measurement configuration indicates a CMR for a candidate cell.

[0122] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, the CSI measurement configuration indicates an SMTC window for obtaining one or more L1 measurements from one or more SSBs.

[0123] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, the L1 measurement report includes one or more SSB indexes and one or more PCIs associated with one or more SSBs, and one or more L1 measurements are obtained from the one or more SSBs during the SMTC window.

[0124] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, the CSI measurement configuration indicates frequency information for obtaining one or more L1 measurements from one or more inter-frequency SSBs.

[0125] In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, process 800 includes: receiving, from a network node, a CSI report configuration for reporting one or more L1 measurements for a candidate cell, wherein the L1 measurement report is associated with the CSI report configuration.

[0126] In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, the CSI report configuration is included in a serving cell configuration associated with an active serving cell.

[0127] In an eleventh aspect, alone or in combination with one or more of the first to tenth aspects, the CSI report configuration configures CSI reporting for the active serving cell.

[0128] In a twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, the CSI report configuration is a first CSI report configuration that is independent of a second CSI report configuration for reporting one or more L1 measurements for the active serving cell.

[0129] In a thirteenth aspect, alone or in combination with one or more of the first to twelfth aspects, the CSI report configuration is included in a serving cell configuration associated with the candidate cell.

[0130] In a fourteenth aspect, alone or in combination with one or more of the first to thirteenth aspects, the L1 measurement report indicating one or more L1 measurements for the candidate cell is included in a MAC-CE.

[0131] In a fifteenth aspect, alone or in combination with one or more of the first to fourteenth aspects, the CSI measurement configuration indicates the CMR and IMR for a candidate cell based at least in part on one or more L1 measurements including L1-SINR.

[0132] In a sixteenth aspect, alone or in combination with one or more of the first to fifteenth aspects, the CMR is the first NZP CSI-RS, and the IMR is the first NZP CSI-RS, the second NZP CSI-RS, or the ZP CSI-RS.

[0133] In a seventeenth aspect, alone or in combination with one or more of the first to sixteenth aspects, the CMR is the SSB, and the IMR is the ZP CSI-RS or the NZP CSI-RS.

[0134] In an eighteenth aspect, alone or in combination with one or more of the first to seventeenth aspects, process 800 includes: sending UE capability information related to the ability to obtain one or more L1 measurements for a candidate cell to a network node, wherein the CSI measurement configuration is based at least in part on the UE capability information.

[0135] In a nineteenth aspect, alone or in combination with one or more of the first to eighteenth aspects, the UE capability information indicates the maximum number of candidate cells supported by the UE.

[0136] In a twentieth aspect, alone or in combination with one or more of the first to nineteenth aspects, the UE capability information indicates the maximum number of CMR reference signals supported by the UE per candidate cell.

[0137] In a twenty-first aspect, alone or in combination with one or more of the first to twentieth aspects, the UE capability information indicates the maximum number of IMR reference signals supported by the UE per candidate cell.

[0138] In a twenty-second aspect, alone or in combination with one or more of the first to twenty-first aspects, the UE capability information indicates whether the UE supports reporting L1-SINR for a candidate cell.

[0139] Although Figure 8 example boxes of process 800 are shown, in some aspects, process 800 may include additional boxes, fewer boxes, different boxes, or boxes arranged in a different manner compared to those depicted in Figure 8 Two or more boxes of process 800 may be performed in parallel additionally or alternatively.

[0140] Figure 9FIG. 0 is a diagram illustrating an example process 900, such as may be performed by a network node, in accordance with the present disclosure. Example process 900 is an example where a network node (e.g., network node 110) performs operations associated with CSI measurement configuration for a candidate cell in L1 / L2 mobility.

[0141] As Figure 9 shown, in some aspects, process 900 may include: sending, to a UE, a CSI measurement configuration that configures one or more L1 measurements for a candidate cell (block 910). For example, a network node (e.g., using Figure 11 the depicted communication manager 150 and / or transmit component 1104) may send, to the UE, a CSI measurement configuration that configures one or more L1 measurements for a candidate cell, as described above.

[0142] As Figure 9 further shown, in some aspects, process 900 may include: receiving, from the UE, an L1 measurement report indicating one or more L1 measurements for a candidate cell (block 920). For example, a network node (e.g., using Figure 11 the depicted communication manager 150 and / or receive component 1102) may receive, from the UE, an L1 measurement report indicating one or more L1 measurements for a candidate cell, as described above.

[0143] Process 900 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in connection with one or more other processes described elsewhere herein.

[0144] In a first aspect, the CSI measurement configuration is included in a serving cell configuration associated with an active serving cell.

[0145] In a second aspect, alone or in combination with the first aspect, the CSI measurement configuration configures one or more L1 measurements for the active serving cell.

[0146] In a third aspect, alone or in combination with one or more of the first and second aspects, the CSI measurement configuration is a first CSI measurement configuration that is independent of a second CSI measurement configuration that configures one or more L1 measurements for the active serving cell.

[0147] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the CSI measurement configuration is included in a serving cell configuration associated with a candidate cell.

[0148] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the CSI measurement configuration indicates a CMR for the candidate cell.

[0149] In a sixth aspect, either alone or in combination with one or more of the first to fifth aspects, the CSI measurement configuration indicates an SMTC window for obtaining one or more L1 measurements from one or more SSBs.

[0150] In a seventh aspect, either alone or in combination with one or more of the first to sixth aspects, the L1 measurement report includes one or more SSB indexes and one or more PCIs associated with one or more SSBs, and one or more L1 measurements are obtained from the one or more SSBs during the SMTC window.

[0151] In an eighth aspect, either alone or in combination with one or more of the first to seventh aspects, the CSI measurement configuration indicates frequency information for obtaining one or more L1 measurements from one or more inter-frequency SSBs.

[0152] In a ninth aspect, either alone or in combination with one or more of the first to eighth aspects, procedure 900 includes: sending to the UE a CSI report configuration for reporting one or more L1 measurements for a candidate cell, where the L1 measurement report is associated with the CSI report configuration.

[0153] In a tenth aspect, either alone or in combination with one or more of the first to ninth aspects, the CSI report configuration is included in the serving cell configuration associated with the active serving cell.

[0154] In an eleventh aspect, either alone or in combination with one or more of the first to tenth aspects, the CSI report configuration configures CSI reporting for the active serving cell.

[0155] In a twelfth aspect, either alone or in combination with one or more of the first to eleventh aspects, the CSI report configuration is a first CSI report configuration that is independent of a second CSI report configuration for reporting one or more L1 measurements for the active serving cell.

[0156] In a thirteenth aspect, either alone or in combination with one or more of the first to twelfth aspects, the CSI report configuration is included in the serving cell configuration associated with the candidate cell.

[0157] In a fourteenth aspect, either alone or in combination with one or more of the first to thirteenth aspects, the L1 measurement report indicating one or more L1 measurements for the candidate cell is included in the MAC-CE.

[0158] In a fifteenth aspect, either alone or in combination with one or more of the first to fourteenth aspects, the CSI measurement configuration indicates the CMR and IMR for the candidate cell at least partially based on one or more L1 measurements including L1-SINR.

[0159] In a sixteenth aspect, either alone or in combination with one or more of the first to fifteenth aspects, the CMR is the first NZP CSI-RS, and the IMR is the first NZP CSI-RS, the second NZP CSI-RS, or the ZP CSI-RS.

[0160] In a seventeenth aspect, either alone or in combination with one or more of the first to sixteenth aspects, the CMR is the SSB, and the IMR is the ZP CSI-RS or the NZP CSI-RS.

[0161] In an eighteenth aspect, either alone or in combination with one or more of the first to seventeenth aspects, process 900 includes: receiving, from a UE, UE capability information related to the ability to obtain one or more L1 measurements for a candidate cell, wherein the CSI measurement configuration is at least partially based on the UE capability information.

[0162] In a nineteenth aspect, either alone or in combination with one or more of the first to eighteenth aspects, the UE capability information indicates the maximum number of candidate cells supported by the UE.

[0163] In a twentieth aspect, either alone or in combination with one or more of the first to nineteenth aspects, the UE capability information indicates the maximum number of CMR reference signals supported by the UE per candidate cell.

[0164] In a twenty-first aspect, either alone or in combination with one or more of the first to twentieth aspects, the UE capability information indicates the maximum number of IMR reference signals supported by the UE per candidate cell.

[0165] In a twenty-second aspect, either alone or in combination with one or more of the first to twenty-first aspects, the UE capability information indicates whether the UE supports reporting L1-SINR for a candidate cell.

[0166] Although Figure 9 example boxes of process 900 are shown, in some aspects, process 900 may include additional boxes, fewer boxes, different boxes, or boxes arranged in a different manner compared to those depicted in Figure 9 Additionally or alternatively, two or more boxes of process 900 may be executed in parallel.

[0167] Figure 10FIG. is a diagram of an example apparatus 1000 for wireless communication in accordance with the present disclosure. The apparatus 1000 may be a UE, or the UE may include the apparatus 1000. In some aspects, the apparatus 1000 includes a receiving component 1002 and a transmitting component 1004, which may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, the apparatus 1000 may communicate with another apparatus 1006 (such as a UE, a base station, or another wireless communication device) using the receiving component 1002 and the transmitting component 1004. As further shown, the apparatus 1000 may include a communication manager 140. The communication manager 140 may include an L1 measurement component 1008 and so on.

[0168] In some aspects, the apparatus 1000 may be configured to perform one or more operations described herein in connection with Figures 7A to 7C Additionally or alternatively, the apparatus 1000 may be configured to perform one or more processes described herein, such as Figure 8 process 800. In some aspects, Figure 10 the apparatus 1000 and / or one or more components shown may include one or more components of the UE described in connection with Figure 2 Additionally or alternatively, Figure 10 one or more components shown may be implemented within one or more components described in connection with Figure 2 Additionally or alternatively, one or more components in a set of components may be at least partially implemented as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or code that are stored in a non-transitory computer-readable medium and are executable by a controller or a processor to perform the functions or operations of the component.

[0169] The receiving component 1002 may receive communications from the apparatus 1006, such as reference signals, control information, data communications, or combinations thereof. The receiving component 1002 may provide the received communications to one or more other components of the apparatus 1000. In some aspects, the receiving component 1002 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) on the received communications, and may provide the processed signals to one or more other components of the apparatus 1000. In some aspects, the receiving component 1002 may include one or more antennas, modems, demodulators, MIMO detectors, receiving processors, controllers / processors, memories, or combinations thereof of the UE described in connection with Figure 2

[0170] The transmitting component 1004 can send communications to the device 1006, such as reference signals, control information, data communications, or combinations thereof. In some aspects, one or more other components of the device 1000 can generate communications and can provide the generated communications to the transmitting component 1004 for transmission to the device 1006. In some aspects, the transmitting component 1004 can perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications, and can send the processed signals to the device 1006. In some aspects, the transmitting component 1004 can include one or more antennas, a modem, a modulator, a transmitting MIMO processor, a transmitting processor, a controller / processor, a memory, or combinations thereof of the UE described in conjunction with Figure 2 The transmitting component 1004 can be co-located with the receiving component 1002 in a transceiver.

[0171] The receiving component 1002 can receive a CSI measurement configuration for configuring one or more L1 measurements for a candidate cell from a network node. The L1 measurement component 1008 can obtain one or more L1 measurements for the candidate cell at least partially based on the CSI measurement configuration. The transmitting component 1004 can send an L1 measurement report indicating one or more L1 measurements for the candidate cell to the network node.

[0172] The receiving component 1002 can receive a CSI report configuration for reporting one or more L1 measurements for a candidate cell from a network node, where the L1 measurement report is associated with the CSI report configuration.

[0173] The transmitting component 1004 can send UE capability information related to the ability to obtain one or more L1 measurements for a candidate cell to the network node, where the CSI measurement configuration is at least partially based on the UE capability information.

[0174] Figure 10 The number and arrangement of the components shown are provided as an example. In fact, there may be additional components, fewer components, different components, or components arranged in a different manner compared to Figure 10 the components shown. Additionally, Figure 10 two or more of the components shown can be implemented within a single component, or Figure 10 a single component shown can be implemented as multiple distributed components. Additionally or alternatively, Figure 10 a set of the (one or more) components shown can perform one or more functions described as being performed by Figure 10 another set of the components shown.

[0175] Figure 11FIG. is a diagram of an example apparatus 1100 for wireless communication in accordance with the present disclosure. Apparatus 1100 may be a network node, or a network node may include apparatus 1100. In some aspects, apparatus 1100 includes a receiving component 1102 and a transmitting component 1104, which may communicate with each other (e.g., via one or more buses and / or one or more other components). As shown, apparatus 1100 may communicate with another apparatus 1106 (such as a UE, a base station, or another wireless communication device) using receiving component 1102 and transmitting component 1104. As further shown, apparatus 1100 may include a communication manager 150.

[0176] In some aspects, apparatus 1100 may be configured to perform one or more operations described herein in connection with Figures 7A to 7C Additional or alternatively, apparatus 1100 may be configured to perform one or more processes described herein, such as Figure 9 process 900. In some aspects, Figure 11 Apparatus 1100 and / or one or more components shown may include one or more components of the network node described in connection with Figure 2 Additional or alternatively, Figure 11 One or more components shown may be implemented within one or more components described in connection with Figure 2 Additional or alternatively, one or more components in a set of components may be at least partially implemented as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or processor to perform the functions or operations of the component.

[0177] Receiving component 1102 may receive communications from apparatus 1106, such as reference signals, control information, data communications, or combinations thereof. Receiving component 1102 may provide the received communications to one or more other components of apparatus 1100. In some aspects, receiving component 1102 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) on the received communications, and may provide the processed signals to the one or more other components of apparatus 1100. In some aspects, receiving component 1102 may include one or more antennas, modems, demodulators, MIMO detectors, receiving processors, controller / processors, memories, or combinations thereof of the network node described in connection with Figure 2

[0178] The transmitting component 1104 may send communications to the device 1106, such as reference signals, control information, data communications, or combinations thereof. In some aspects, one or more other components of the device 1100 may generate communications and may provide the generated communications to the transmitting component 1104 for transmission to the device 1106. In some aspects, the transmitting component 1104 may perform signal processing (such as filtering, amplifying, modulating, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications, and may send the processed signals to the device 1106. In some aspects, the transmitting component 1104 may include one or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the network nodes described in conjunction with Figure 2 The transmitting component 1104 may send a CSI measurement configuration for configuring one or more L1 measurements for a candidate cell to the UE. The receiving component 1102 may receive an L1 measurement report from the UE indicating one or more L1 measurements for the candidate cell.

[0179] The transmitting component 1104 may send a CSI report configuration for reporting one or more L1 measurements for a candidate cell to the UE, where the L1 measurement report is associated with the CSI report configuration.

[0180] The receiving component 1102 may receive UE capability information related to the ability to obtain one or more L1 measurements for a candidate cell from the UE, where the CSI measurement configuration is at least partially based on the UE capability information.

[0181] In some aspects, the transmitting component 1104 may be co-located with the receiving component 1102 in a transceiver.

[0182] Figure 11 The number and arrangement of the components shown are provided as an example. In fact, there may be additional components, fewer components, different components, or components arranged in a different manner compared to those shown. Additionally, Figure 11 two or more of the components shown may be implemented within a single component, or Figure 11 a single component shown may be implemented as multiple distributed components. Additionally or alternatively, Figure 11 a set of the (one or more) components shown may perform one or more functions described as being performed by another set of the components shown. Figure 11 a set of the (one or more) components shown may perform one or more functions described as being performed by another set of the components shown. Figure 11 a set of the (one or more) components shown may perform one or more functions described as being performed by another set of the components shown.

[0183] An overview of some aspects of the present disclosure is provided below:

[0184] Aspect 1: A method for wireless communication performed by a UE, the method comprising: receiving, from a network node, a CSI measurement configuration for configuring one or more L1 measurements for a candidate cell; obtaining, at least in part based on the CSI measurement configuration, the one or more L1 measurements for the candidate cell; and sending, to the network node, an L1 measurement report indicating the one or more L1 measurements for the candidate cell.

[0185] Aspect 2: The method according to aspect 1, wherein the CSI measurement configuration is included in a serving cell configuration associated with an active serving cell.

[0186] Aspect 3: The method according to aspect 2, wherein the CSI measurement configuration configures one or more L1 measurements for the active serving cell.

[0187] Aspect 4: The method according to aspect 2, wherein the CSI measurement configuration is a first CSI measurement configuration that is independent of a second CSI measurement configuration for configuring one or more L1 measurements for the active serving cell.

[0188] Aspect 5: The method according to aspect 1, wherein the CSI measurement configuration is included in a serving cell configuration associated with the candidate cell.

[0189] Aspect 6: The method according to any one of aspects 1 to 5, wherein the CSI measurement configuration indicates a CMR for the candidate cell.

[0190] Aspect 7: The method according to aspect 1, wherein the CSI measurement configuration indicates an SMTC window for obtaining the one or more L1 measurements from one or more SSBs.

[0191] Aspect 8: The method according to aspect 7, wherein the L1 measurement report includes one or more SSB indexes and one or more PCIs associated with the one or more SSBs, and the one or more L1 measurements are obtained from the one or more SSBs during the SMTC window.

[0192] Aspect 9: The method according to any one of aspects 7 to 8, wherein the CSI measurement configuration indicates frequency information for obtaining the one or more L1 measurements from one or more inter-frequency SSBs.

[0193] Aspect 10: The method according to any one of aspects 1 to 9, the method further comprising: receiving, from the network node, a CSI report configuration for reporting the one or more L1 measurements for the candidate cell, wherein the L1 measurement report is associated with the CSI report configuration.

[0194] Aspect 11: The method according to aspect 10, wherein the CSI report configuration is included in the serving cell configuration associated with the active serving cell.

[0195] Aspect 12: The method according to aspect 11, wherein the CSI report configuration configures CSI reporting for the active serving cell.

[0196] Aspect 13: The method according to aspect 11, wherein the CSI report configuration is a first CSI report configuration, and the first CSI report configuration is independent of a second CSI report configuration for reporting one or more L1 measurements for the active serving cell.

[0197] Aspect 14: The method according to aspect 10, wherein the CSI report configuration is included in the serving cell configuration associated with the candidate cell.

[0198] Aspect 15: The method according to any one of aspects 1 to 9, wherein the L1 measurement report indicating the one or more L1 measurements for the candidate cell is included in the MAC-CE.

[0199] Aspect 16: The method according to any one of aspects 1 to 15, wherein the CSI measurement configuration indicates CMR and IMR for the candidate cell at least partially based on the one or more L1 measurements including L1-SINR.

[0200] Aspect 17: The method according to aspect 16, wherein the CMR is a first NZP CSI-RS, and wherein the IMR is the first NZP CSI-RS, a second NZP CSI-RS, or a ZP CSI-RS.

[0201] Aspect 18: The method according to aspect 16, wherein the CMR is an SSB, and wherein the IMR is a ZP CSI-RS or a NZP CSI-RS.

[0202] Aspect 19: The method according to any one of aspects 1 to 18, the method further comprising: sending UE capability information related to the ability to obtain the one or more L1 measurements for the candidate cell to the network node, wherein the CSI measurement configuration is at least partially based on the UE capability information.

[0203] Aspect 20: The method according to aspect 19, wherein the UE capability information indicates the maximum number of candidate cells supported by the UE.

[0204] Aspect 21: The method according to any one of Aspects 19 to 20, wherein the UE capability information indicates the maximum number of CMR reference signals supported by the UE per candidate cell.

[0205] Aspect 22: The method according to any one of Aspects 19 to 21, wherein the UE capability information indicates the maximum number of IMR reference signals supported by the UE per candidate cell.

[0206] Aspect 23: The method according to any one of Aspects 19 to 22, wherein the UE capability information indicates whether the UE supports reporting L1 - SINR for the candidate cell.

[0207] Aspect 24: A method of wireless communication performed by a network node, the method comprising: sending a CSI measurement configuration for configuring one or more L1 measurements for a candidate cell to a UE; and receiving an L1 measurement report from the UE indicating the one or more L1 measurements for the candidate cell.

[0208] Aspect 25: The method according to Aspect 24, wherein the CSI measurement configuration is included in a serving cell configuration associated with an active serving cell.

[0209] Aspect 26: The method according to Aspect 25, wherein the CSI measurement configuration configures one or more L1 measurements for the active serving cell.

[0210] Aspect 27: The method according to Aspect 25, wherein the CSI measurement configuration is a first CSI measurement configuration, and the first CSI measurement configuration is independent of a second CSI measurement configuration for configuring one or more L1 measurements for the active serving cell.

[0211] Aspect 28: The method according to Aspect 24, wherein the CSI measurement configuration is included in a serving cell configuration associated with the candidate cell.

[0212] Aspect 29: The method according to any one of Aspects 24 to 28, wherein the CSI measurement configuration indicates a CMR for the candidate cell.

[0213] Aspect 30: The method according to Aspect 24, wherein the CSI measurement configuration indicates an SMTC window for obtaining the one or more L1 measurements from one or more SSBs.

[0214] Aspect 31: The method according to Aspect 30, wherein the L1 measurement report includes one or more SSB indices and one or more PCIs associated with the one or more SSBs, and the one or more L1 measurements are obtained from the one or more SSBs during the SMTC window.

[0215] Aspect 32: The method according to any one of Aspects 30 to 31, wherein the CSI measurement configuration indicates frequency information for obtaining the one or more L1 measurements from one or more inter-frequency SSBs.

[0216] Aspect 33: The method according to any one of Aspects 24 to 32, the method further comprising: sending to the UE a CSI report configuration for reporting the one or more L1 measurements for the candidate cell, wherein the L1 measurement report is associated with the CSI report configuration.

[0217] Aspect 34: The method according to Aspect 33, wherein the CSI report configuration is included in a serving cell configuration associated with an active serving cell.

[0218] Aspect 35: The method according to Aspect 34, wherein the CSI report configuration configures CSI reporting for the active serving cell.

[0219] Aspect 36: The method according to Aspect 34, wherein the CSI report configuration is a first CSI report configuration that is independent of a second CSI report configuration for reporting one or more L1 measurements for the active serving cell.

[0220] Aspect 37: The method according to Aspect 33, wherein the CSI report configuration is included in a serving cell configuration associated with the candidate cell.

[0221] Aspect 38: The method according to any one of Aspects 24 to 32, wherein the L1 measurement report indicating the one or more L1 measurements for the candidate cell is included in a MAC-CE.

[0222] Aspect 39: The method according to any one of Aspects 24 to 38, wherein the CSI measurement configuration indicates a CMR and an IMR for the candidate cell based at least in part on the one or more L1 measurements including L1-SINR.

[0223] Aspect 40: The method according to Aspect 39, wherein the CMR is a first NZP CSI-RS, and wherein the IMR is the first NZP CSI-RS, a second NZP CSI-RS, or a ZP CSI-RS.

[0224] Aspect 41: The method according to Aspect 39, wherein the CMR is an SSB, and wherein the IMR is a ZP CSI-RS or a NZP CSI-RS.

[0225] Aspect 42: The method according to any one of aspects 24 to 41, the method further comprising: receiving, from the UE, UE capability information related to the ability to obtain the one or more L1 measurements for the candidate cell, wherein the CSI measurement configuration is at least partially based on the UE capability information.

[0226] Aspect 43: The method according to aspect 42, wherein the UE capability information indicates the maximum number of candidate cells supported by the UE.

[0227] Aspect 44: The method according to any one of aspects 42 to 43, wherein the UE capability information indicates the maximum number of CMR reference signals supported by the UE per candidate cell.

[0228] Aspect 45: The method according to any one of aspects 42 to 44, wherein the UE capability information indicates the maximum number of IMR reference signals supported by the UE per candidate cell.

[0229] Aspect 46: The method according to any one of aspects 42 to 45, wherein the UE capability information indicates whether the UE supports reporting L1-SINR for the candidate cell.

[0230] Aspect 47: An apparatus for wireless communication at a device, the apparatus comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method according to one or more of aspects 1 to 46.

[0231] Aspect 48: A device for wireless communication, the device comprising: a memory and one or more processors coupled to the memory, the one or more processors configured to perform the method according to one or more of aspects 1 to 46.

[0232] Aspect 49: An apparatus for wireless communication, the apparatus comprising at least one component for performing the method according to one or more of aspects 1 to 46.

[0233] Aspect 50: A non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform the method according to one or more of aspects 1 to 46.

[0234] Aspect 51: A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions including one or more instructions that, when executed by one or more processors of a device, cause the device to perform the method according to one or more of Aspects 1 to 46.

[0235] While the foregoing disclosure provides illustration and description, it is not intended to be exhaustive or to limit the aspects to the precise forms disclosed. Modifications and variations may be made in accordance with the above disclosure, or may be obtained from practice of these aspects.

[0236] As used herein, the term "component" is intended to be broadly construed as a combination of hardware and / or hardware and software. Whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise, "software" shall be broadly construed to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, processes, and / or functions, etc. As used herein, a "processor" is implemented in a combination of hardware and / or hardware and software. It will be apparent that the systems and / or methods described herein may be implemented in different forms of hardware and / or hardware and software combinations. The actual specific control hardware or software code used to implement these systems and / or methods does not limit the aspects. Accordingly, the operation and behavior of the systems and / or methods are not described herein with reference to specific software code, as those skilled in the art will understand that the software and hardware can be designed at least in part based on the description herein to implement the systems and / or methods.

[0237] As used herein, depending on the context, "meeting a threshold" may refer to a value greater than a threshold, greater than or equal to a threshold, less than a threshold, less than or equal to a threshold, equal to a threshold, not equal to a threshold, etc.

[0238] Although specific combinations of features are set forth in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of the various aspects. Many of these features may be combined in ways not specifically recited in the claims and / or not disclosed in the specification. The disclosure of each aspect includes each dependent claim combined with every other claim in the set of claims. As used herein, the phrase referring to a list of items “at least one of” means any combination of these items (which includes a single member). By way of 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 multiple identical elements (e.g., a + a, a + a + a, a + a + b, a + a + c, a + b + b, a + c + c, b + b, b + b + b, b + b + c, c + c, and c + c + c, or any other ordering of a, b, and c).

[0239] Any element, act, or instruction used herein should not be construed as critical or essential unless explicitly described as such. Further, 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 of the items mentioned in connection with the article “the” and may be used interchangeably with “one or more.” Further, 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.” If only intending to refer to a single item, the phrase “only one” or similar language is used. Further, as used herein, the terms “has,” “owns,” “possesses,” etc. are intended to be open-ended terms that do not limit the elements they modify (e.g., an element that “has” A may also have B). Further, the phrase “based on” is intended to mean “at least partially based on” unless otherwise explicitly stated. Further, as used herein, the term “or” when used in a series is intended to be open-ended and may be used interchangeably with “and / or” unless otherwise explicitly stated (e.g., if used in conjunction with “either” or “only one”).

Claims

1. A method of wireless communication performed by a user equipment (UE), the method comprising: Receiving, from a network node, a channel state information (CSI) measurement configuration for configuring one or more layer 1 (L1) measurements for a candidate cell; Obtaining, at least in part based on the CSI measurement configuration, the one or more L1 measurements for the candidate cell; And Sending, to the network node, an L1 measurement report indicating the one or more L1 measurements for the candidate cell.

2. The method according to claim 1, wherein the CSI measurement configuration is included in a serving cell configuration associated with an active serving cell.

3. The method according to claim 2, wherein the CSI measurement configuration configures one or more L1 measurements for the active serving cell.

4. The method according to claim 2, wherein the CSI measurement configuration is a first CSI measurement configuration that is independent of a second CSI measurement configuration for configuring one or more L1 measurements for the active serving cell.

5. The method according to claim 1, wherein the CSI measurement configuration is included in a serving cell configuration associated with the candidate cell.

6. The method according to claim 1, wherein the CSI measurement configuration indicates a channel measurement resource (CMR) for the candidate cell.

7. The method according to claim 1, wherein the CSI measurement configuration indicates an SSB measurement timing configuration (SMTC) window for obtaining the one or more L1 measurements from one or more synchronization signal blocks (SSBs).

8. The method according to claim 7, wherein the L1 measurement report includes one or more SSB indices and one or more physical cell identities (PCIs) associated with the one or more SSBs, and the one or more L1 measurements are obtained from the one or more SSBs during the SMTC window.

9. The method according to claim 7, wherein the CSI measurement configuration indicates frequency information for obtaining the one or more L1 measurements from one or more inter-frequency SSBs.

10. The method according to claim 1, the method further comprising: Receiving, from the network node, a CSI report configuration for reporting the one or more L1 measurements for the candidate cell, wherein the L1 measurement report is associated with the CSI report configuration.

11. The method according to claim 10, wherein the CSI report configuration is included in a serving cell configuration associated with an active serving cell.

12. The method according to claim 11, wherein the CSI report configuration configures a CSI report for the active serving cell.

13. The method according to claim 11, wherein the CSI report configuration is a first CSI report configuration that is independent of a second CSI report configuration for reporting one or more L1 measurements for the active serving cell.

14. The method according to claim 10, wherein the CSI report configuration is included in a serving cell configuration associated with the candidate cell.

15. The method according to claim 1, wherein the L1 measurement report indicating the one or more L1 measurements for the candidate cell is included in a medium access control (MAC) control element (MAC-CE).

16. The method according to claim 1, wherein the CSI measurement configuration indicates channel measurement resources (CMR) and interference measurement resources (IMR) for the candidate cell based at least in part on the one or more L1 measurements including an L1 signal-to-interference plus noise ratio (L1-SINR).

17. The method according to claim 16, wherein the CMR is a first non-zero power (NZP) CSI reference signal (CSI-RS) (NZP-CSI-RS), and wherein the IMR is the first NZP CSI-RS, a second NZP CSI-RS, or a zero power (ZP) CSI-RS.

18. The method according to claim 16, wherein the CMR is a synchronization signal block (SSB), and wherein the IMR is a zero power (ZP) CSI reference signal (CSI-RS) (ZP CSI-RS) or a non-zero power (NZP) CSI-RS (NZP CSI-RS).

19. The method according to claim 1, the method further comprising: sending UE capability information related to the ability to obtain the one or more L1 measurements for the candidate cell to the network node, wherein the CSI measurement configuration is based at least in part on the UE capability information.

20. The method according to claim 19, wherein the UE capability information indicates the maximum number of candidate cells supported by the UE.

21. The method according to claim 19, wherein the UE capability information indicates the maximum number of channel measurement resource (CMR) reference signals supported by the UE per candidate cell.

22. The method according to claim 19, wherein the UE capability information indicates the maximum number of interference measurement resource (IMR) reference signals supported by the UE per candidate cell.

23. The method according to claim 19, wherein the UE capability information indicates whether the UE supports reporting an L1 signal-to-interference plus noise ratio (L1-SINR) for the candidate cell.

24. A method of wireless communication performed by a network node, the method comprising: sending a channel state information (CSI) measurement configuration for configuring one or more layer 1 (L1) measurements for a candidate cell to a user equipment (UE); and receiving an L1 measurement report from the UE indicating the one or more L1 measurements for the candidate cell.

25. The method according to claim 24, wherein the CSI measurement configuration is included in a serving cell configuration associated with an active serving cell.

26. The method according to claim 25, wherein the CSI measurement configuration configures one or more L1 measurements for the active serving cell.

27. The method according to claim 25, wherein the CSI measurement configuration is a first CSI measurement configuration, and the first CSI measurement configuration is independent of a second CSI measurement configuration that configures one or more L1 measurements for the active serving cell.

28. The method according to claim 24, wherein the CSI measurement configuration is included in a serving cell configuration associated with the candidate cell.

29. The method according to claim 24, wherein the CSI measurement configuration indicates channel measurement resources (CMR) for the candidate cell.

30. The method according to claim 24, wherein the CSI measurement configuration indicates an SSB measurement timing configuration (SMTC) window for obtaining the one or more L1 measurements from one or more synchronization signal blocks (SSB).

31. The method according to claim 30, wherein the L1 measurement report includes one or more SSB indices and one or more physical cell identities (PCI) associated with the one or more SSB, and the one or more L1 measurements are obtained from the one or more SSB during the SMTC window.

32. The method according to claim 30, wherein the CSI measurement configuration indicates frequency information for obtaining the one or more L1 measurements from one or more inter-frequency SSB.

33. The method according to claim 24, the method further comprising: Sending a CSI report configuration for reporting the one or more L1 measurements for the candidate cell to the UE, wherein the L1 measurement report is associated with the CSI report configuration.

34. The method according to claim 33, wherein the CSI report configuration is included in a serving cell configuration associated with the active serving cell.

35. The method according to claim 34, wherein the CSI report configuration configures CSI reporting for the active serving cell.

36. The method according to claim 34, wherein the CSI report configuration is a first CSI report configuration, and the first CSI report configuration is independent of a second CSI report configuration for reporting one or more L1 measurements for the active serving cell.

37. The method according to claim 33, wherein the CSI report configuration is included in a serving cell configuration associated with the candidate cell.

38. The method according to claim 24, wherein the L1 measurement report indicating the one or more L1 measurements for the candidate cell is included in a medium access control (MAC) control element (MAC-CE).

39. The method according to claim 24, wherein the CSI measurement configuration indicates channel measurement resources (CMR) and interference measurement resources (IMR) for the candidate cell based at least in part on the one or more L1 measurements including L1 signal-to-interference plus noise ratio (L1-SINR).

40. The method according to claim 39, wherein the CMR is a first non-zero power (NZP) CSI reference signal (CSI-RS) (NZP-CSI-RS), and wherein the IMR is the first NZP CSI-RS, a second NZP CSI-RS, or a zero power (ZP) CSI-RS.

41. The method according to claim 39, wherein the CMR is a synchronization signal block (SSB), and wherein the IMR is a zero power (ZP) CSI reference signal (CSI-RS) (ZP CSI-RS) or a non-zero power (NZP) CSI-RS (NZP CSI-RS).

42. The method according to claim 24, the method further comprising: Receiving, from the UE, UE capability information related to the ability to obtain the one or more L1 measurements for the candidate cell, wherein the CSI measurement configuration is at least partially based on the UE capability information.

43. The method according to claim 42, wherein the UE capability information indicates the maximum number of candidate cells supported by the UE.

44. The method according to claim 42, wherein the UE capability information indicates the maximum number of channel measurement resource (CMR) reference signals supported by the UE per candidate cell.

45. The method according to claim 42, wherein the UE capability information indicates the maximum number of interference measurement resource (IMR) reference signals supported by the UE per candidate cell.

46. The method according to claim 42, wherein the UE capability information indicates whether the UE supports reporting the L1 signal-to-interference-plus-noise ratio (L1-SINR) for the candidate cell.

47. A user equipment (UE) for wireless communication, the user equipment (UE) comprising: A memory; And One or more processors coupled to the memory and configured to: Receive, from a network node, a channel state information (CSI) measurement configuration that configures one or more layer 1 (L1) measurements for a candidate cell; Obtain the one or more L1 measurements for the candidate cell at least partially based on the CSI measurement configuration; And Send, to the network node, an L1 measurement report indicating the one or more L1 measurements for the candidate cell.

48. The UE according to claim 47, wherein the CSI measurement configuration is included in a serving cell configuration associated with an active serving cell.

49. The UE according to claim 48, wherein the CSI measurement configuration configures one or more L1 measurements for the active serving cell.

50. The UE according to claim 48, wherein the CSI measurement configuration is a first CSI measurement configuration that is independent of a second CSI measurement configuration that configures one or more L1 measurements for the active serving cell.

51. The UE according to claim 47, wherein the CSI measurement configuration is included in a serving cell configuration associated with the candidate cell.

52. The UE according to claim 47, wherein the CSI measurement configuration indicates channel measurement resources (CMR) for the candidate cell.

53. The UE according to claim 47, wherein the CSI measurement configuration indicates an SSB measurement timing configuration (SMTC) window for obtaining the one or more L1 measurements from one or more synchronization signal blocks (SSB).

54. The UE according to claim 53, wherein the L1 measurement report includes one or more SSB indexes and one or more physical cell identities (PCI) associated with the one or more SSBs, and the one or more L1 measurements are obtained from the one or more SSBs during the SMTC window.

55. The UE according to claim 53, wherein the CSI measurement configuration indicates frequency information for obtaining the one or more L1 measurements from one or more inter-frequency SSBs.

56. The UE according to claim 47, wherein the one or more processors are further configured to: receive, from the network node, a CSI report configuration for reporting the one or more L1 measurements for the candidate cell, wherein the L1 measurement report is associated with the CSI report configuration.

57. The UE according to claim 56, wherein the CSI report configuration is included in a serving cell configuration associated with an active serving cell.

58. The UE according to claim 57, wherein the CSI report configuration configures CSI reporting for the active serving cell.

59. The UE according to claim 57, wherein the CSI report configuration is a first CSI report configuration, and the first CSI report configuration is independent of a second CSI report configuration for reporting one or more L1 measurements for the active serving cell.

60. The UE according to claim 56, wherein the CSI report configuration is included in a serving cell configuration associated with the candidate cell.

61. The UE according to claim 47, wherein the L1 measurement report indicating the one or more L1 measurements for the candidate cell is included in a medium access control (MAC) control element (MAC-CE).

62. The UE according to claim 47, wherein the CSI measurement configuration indicates channel measurement resources (CMR) and interference measurement resources (IMR) for the candidate cell based at least in part on the one or more L1 measurements including L1 signal-to-interference plus noise ratio (L1-SINR).

63. The UE according to claim 62, wherein the CMR is a first non-zero power (NZP) CSI reference signal (CSI-RS) (NZP-CSI-RS), and wherein the IMR is the first NZP CSI-RS, a second NZP CSI-RS, or a zero power (ZP) CSI-RS.

64. The UE according to claim 62, wherein the CMR is a Synchronization Signal Block (SSB), and wherein the IMR is a Zero-Power (ZP) Channel State Information Reference Signal (CSI-RS) (ZP CSI-RS) or a Non-Zero-Power (NZP) CSI-RS (NZP CSI-RS).

65. The UE according to claim 47, wherein the one or more processors are further configured to: send UE capability information related to the ability to obtain the one or more L1 measurements for the candidate cell to the network node, wherein the CSI measurement configuration is at least partially based on the UE capability information.

66. The UE according to claim 65, wherein the UE capability information indicates the maximum number of candidate cells supported by the UE.

67. The UE according to claim 65, wherein the UE capability information indicates the maximum number of Channel Measurement Resource (CMR) reference signals supported by the UE per candidate cell.

68. The UE according to claim 65, wherein the UE capability information indicates the maximum number of Interference Measurement Resource (IMR) reference signals supported by the UE per candidate cell.

69. The UE according to claim 65, wherein the UE capability information indicates whether the UE supports reporting the L1 Signal-to-Interference-plus-Noise Ratio (L1-SINR) for the candidate cell.

70. A network node for wireless communication, the network node comprising: a memory; and one or more processors, the one or more processors being coupled to the memory and configured to: send a Channel State Information (CSI) measurement configuration for configuring one or more Layer 1 (L1) measurements for a candidate cell to a User Equipment (UE); and receive an L1 measurement report from the UE indicating the one or more L1 measurements for the candidate cell.

71. The network node according to claim 70, wherein the CSI measurement configuration is included in a serving cell configuration associated with an active serving cell.

72. The network node according to claim 71, wherein the CSI measurement configuration configures one or more L1 measurements for the active serving cell.

73. The network node according to claim 71, wherein the CSI measurement configuration is a first CSI measurement configuration that is independent of a second CSI measurement configuration that configures one or more L1 measurements for the active serving cell.

74. The network node according to claim 70, wherein the CSI measurement configuration is included in a serving cell configuration associated with the candidate cell.

75. The network node according to claim 70, wherein the CSI measurement configuration indicates a Channel Measurement Resource (CMR) for the candidate cell.

76. The network node according to claim 70, wherein the CSI measurement configuration indicates an SSB Measurement Timing Configuration (SMTC) window for obtaining the one or more L1 measurements from one or more Synchronization Signal Blocks (SSB).

77. The network node according to claim 76, wherein the L1 measurement report includes one or more SSB indices and one or more physical cell identities (PCIs) associated with the one or more SSBs, and the one or more L1 measurements are obtained from the one or more SSBs during the SMTC window.

78. The network node according to claim 76, wherein the CSI measurement configuration indicates frequency information for obtaining the one or more L1 measurements from one or more inter-frequency SSBs.

79. The network node according to claim 70, wherein the one or more processors are further configured to: Send a CSI report configuration for reporting the one or more L1 measurements for the candidate cell to the UE, wherein the L1 measurement report is associated with the CSI report configuration.

80. The network node according to claim 79, wherein the CSI report configuration is included in a serving cell configuration associated with an active serving cell.

81. The network node according to claim 80, wherein the CSI report configuration configures CSI reporting for the active serving cell.

82. The network node according to claim 80, wherein the CSI report configuration is a first CSI report configuration that is independent of a second CSI report configuration for reporting one or more L1 measurements for the active serving cell.

83. The network node according to claim 79, wherein the CSI report configuration is included in a serving cell configuration associated with the candidate cell.

84. The network node according to claim 70, wherein the L1 measurement report indicating the one or more L1 measurements for the candidate cell is included in a medium access control (MAC) control element (MAC-CE).

85. The network node according to claim 70, wherein the CSI measurement configuration indicates channel measurement resources (CMRs) and interference measurement resources (IMRs) for the candidate cell based at least in part on the one or more L1 measurements including L1 signal-to-interference plus noise ratio (L1-SINR).

86. The network node according to claim 85, wherein the CMR is a first non-zero power (NZP) CSI reference signal (CSI-RS) (NZP-CSI-RS), and wherein the IMR is the first NZP CSI-RS, a second NZP CSI-RS, or a zero power (ZP) CSI-RS.

87. The network node according to claim 85, wherein the CMR is a synchronization signal block (SSB), and wherein the IMR is a zero power (ZP) CSI reference signal (CSI-RS) (ZP CSI-RS) or a non-zero power (NZP) CSI-RS (NZP CSI-RS).

88. The network node according to claim 70, wherein the one or more processors are further configured to: Receive UE capability information related to the ability to obtain the one or more L1 measurements for the candidate cell from the UE, wherein the CSI measurement configuration is at least partially based on the UE capability information.

89. The network node according to claim 88, wherein the UE capability information indicates the maximum number of candidate cells supported by the UE.

90. The network node according to claim 88, wherein the UE capability information indicates the maximum number of channel measurement resource (CMR) reference signals supported by the UE per candidate cell.

91. The network node according to claim 88, wherein the UE capability information indicates the maximum number of interference measurement resource (IMR) reference signals supported by the UE per candidate cell.

92. The network node according to claim 88, wherein the UE capability information indicates whether the UE supports reporting the L1 signal-to-interference-plus-noise ratio (L1-SINR) for the candidate cell.

93. A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set including: One or more instructions that, when executed by one or more processors of a user equipment (UE), cause the UE to: Receive from a network node a channel state information (CSI) measurement configuration that configures one or more layer 1 (L1) measurements for a candidate cell; Obtain the one or more L1 measurements for the candidate cell at least partially based on the CSI measurement configuration; And Send to the network node an L1 measurement report indicating the one or more L1 measurements for the candidate cell.

94. A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set including: One or more instructions that, when executed by one or more processors of a network node, cause the network node to: Send to a user equipment (UE) a channel state information (CSI) measurement configuration that configures one or more layer 1 (L1) measurements for a candidate cell; And Receive from the UE an L1 measurement report indicating the one or more L1 measurements for the candidate cell.

95. A device for wireless communication, the device including: Means for receiving from a network node a channel state information (CSI) measurement configuration that configures one or more layer 1 (L1) measurements for a candidate cell; Means for obtaining the one or more L1 measurements for the candidate cell at least partially based on the CSI measurement configuration; And Means for sending to the network node an L1 measurement report indicating the one or more L1 measurements for the candidate cell.

96. A device for wireless communication, the device including: Means for sending to a user equipment (UE) a channel state information (CSI) measurement configuration that configures one or more layer 1 (L1) measurements for a candidate cell; And A component for receiving from the UE an L1 measurement report indicating the one or more L1 measurements for the candidate cell.

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