Reference synchronization signal block for user equipment mobility

Abstract

Various aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may identify, for a handover between a serving cell and a target cell, whether a center frequency and subcarrier spacing (SCS) of a reference synchronization signal block (SSB) for the serving cell are the same as a center frequency and SCS of a reference SSB for the target cell, respectively. The UE may initiate a handover from the serving cell to the target cell using one or more intra-frequency measurements or handover conditions based at least in part on the center frequency and SCS of the reference SSB for the serving cell being the same as the center frequency and SCS of the reference SSB for the target cell, respectively, or otherwise, may initiate a handover from the serving cell to the target cell using one or more intra-frequency measurements or handover conditions, based on the center frequency and SCS of the reference SSB for the target cell being the same as the center frequency and SCS of the reference SSB for the target cell, respectively. Handover from the serving cell to the target cell is initiated using one or more inter-frequency measurements or handover conditions. Numerous other aspects are described.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to Indian Patent Application No. 202341010797 filed on February 17, 2023, and titled “REFERENCE SYNCHRONIZATIONSIGNAL BLOCK FOR USER EQUIPMENT MOBILITY” and assigned to the assignee of the present application. The disclosure of the prior application is considered a part of the present patent application and is incorporated herein by reference. Technical Field

[0003] Aspects of the present disclosure relate generally to wireless communications, and to techniques and apparatus for reference synchronization signal blocks for user equipment mobility. Background Art

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcasts. Typical wireless communication systems may employ multiple access technologies capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, 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 a set of enhancements to the Universal Mobile Telecommunications System (UMTS) mobile standard promulgated by the Third Generation Partnership Project (3GPP).

[0005] 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 and uplink communications. A "downlink" (or "DL") refers to the communication link from the network node to the UE, and an "uplink" (or "UL") refers to the communication link from the UE to the network node. Some wireless networks may support device-to-device communication, such as via a local link (e.g., a sidelink (SL), a wireless local area network (WLAN) link, and / or a wireless personal area network (WPAN) link, etc.).

[0006] The above-mentioned multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different UEs to communicate at a city, country, region, and / or global level. New Radio (NR) (which may be referred to as 5G) is a set of enhancements to the LTE mobile standard promulgated by 3GPP. NR is designed to better support mobile broadband Internet access by: improving spectrum efficiency; reducing costs; improving services; utilizing new spectrum; and using orthogonal frequency division multiplexing (OFDM) with a cyclic prefix (CP) (CP-OFDM) on the downlink and 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 to better integrate with other open standards; as well as supporting beamforming, multiple-input multiple-output (MIMO) antenna technology, and carrier aggregation. As the demand for mobile broadband access continues to increase, further improvements in LTE, NR, and other radio access technologies remain useful. Summary of the Invention

[0007] Some aspects described herein relate to a method for wireless communication performed by a user equipment (UE). The method may include, for a handover between a serving cell and a target cell, identifying whether a center frequency and a subcarrier spacing (SCS) of a reference synchronization signal block (SSB) for the serving cell are the same as a center frequency and SCS of a reference SSB for the target cell, respectively. The method may include initiating a handover from the serving cell to the target cell using one or more intra-frequency measurement or handover conditions based at least in part on the center frequency and SCS of the reference SSB for the serving cell being the same as the center frequency and SCS of the reference SSB for the target cell, respectively, or initiating a handover from the serving cell to the target cell using one or more inter-frequency measurement or handover conditions based at least in part on the center frequency and SCS of the reference SSB for the serving cell being different from the center frequency and SCS of the reference SSB for the target cell, respectively.

[0008] Some aspects described herein relate to a method of wireless communication performed by a network node. The method may include sending configuration information indicating one or more reference SSBs for a serving cell or one or more reference SSBs for a target cell. The method may include sending an indication for performing a handover from the serving cell to the target cell, the handover being performed using one or more intra-frequency measurements or handover conditions based at least in part on the center frequency and SCS of the selected reference SSB for the serving cell being the same as the center frequency and SCS of the selected reference SSB for the target cell, or being performed using one or more inter-frequency measurements or handover conditions based at least in part on the center frequency and SCS of the selected reference SSB for the serving cell being different from the center frequency and SCS of the selected reference SSB for the target cell, respectively.

[0009] Some aspects described herein relate to a method of wireless communication performed by a UE. The method may include, for radio resource control (RRC) reestablishment, identifying whether a center frequency and an SCS of a reference SSB for a serving cell are the same as the center frequency and SCS of a reference SSB for a neighboring cell, respectively. The method may include initiating RRC reestablishment using one or more intra-frequency measurements based at least in part on the center frequency and SCS of the reference SSB for the serving cell being the same as the center frequency and SCS of the reference SSB for the neighboring cell, respectively, or initiating RRC reestablishment using one or more inter-frequency measurements based at least in part on the center frequency and SCS of the reference SSB for the serving cell being different from the center frequency and SCS of the reference SSB for the neighboring cell, respectively.

[0010] Some aspects described herein relate to a method of wireless communication performed by a network node. The method may include sending configuration information indicating one or more reference SSBs for a serving cell or one or more reference SSBs for a neighboring cell. The method may include sending an indication for performing an RRC reestablishment, the RRC reestablishment being performed using one or more intra-frequency measurements based at least in part on the center frequency and SCS of the selected reference SSB for the serving cell being the same as the center frequency and SCS of the selected reference SSB for the neighboring cell, respectively, or using one or more inter-frequency measurements based at least in part on the center frequency and SCS of the selected reference SSB for the serving cell being different from the center frequency and SCS of the selected reference SSB for the neighboring cell, respectively.

[0011] Some aspects described herein relate to a user equipment (UE) for wireless communication. The user equipment may include: a memory; one or more processors coupled to the memory; and instructions stored in the memory and executable by the one or more processors. The instructions may be executable by the one or more processors to cause the user equipment to identify, for a handover between a serving cell and a target cell, whether a center frequency and a SCS of a reference SSB for the serving cell are the same as a center frequency and a SCS of a reference SSB for the target cell, respectively. The instructions may be executable by the one or more processors to cause the user equipment to initiate a handover from the serving cell to the target cell using one or more intra-frequency measurement or handover conditions based at least in part on the center frequency and SCS of the reference SSB for the serving cell being the same as the center frequency and SCS of the reference SSB for the target cell, respectively, or to initiate a handover from the serving cell to the target cell using one or more inter-frequency measurement or handover conditions based at least in part on the center frequency and SCS of the reference SSB for the serving cell being different from the center frequency and SCS of the reference SSB for the target cell, respectively.

[0012] Some aspects described herein relate to a network node for wireless communications. The network node may include: a memory; one or more processors coupled to the memory; and instructions stored in the memory and executable by the one or more processors. The instructions may be executable by the one or more processors to cause the network node to send configuration information indicating one or more reference SSBs for a serving cell or one or more reference SSBs for a target cell. The instructions may be executable by the one or more processors to cause the network node to send an indication for performing a handover from the serving cell to the target cell, the handover being performed using one or more intra-frequency measurement or handover conditions based at least in part on a center frequency and SCS for a selected reference SSB for the serving cell being the same as a center frequency and SCS for a selected reference SSB for the target cell, respectively, or being performed using one or more inter-frequency measurement or handover conditions based at least in part on the center frequency and SCS for the selected reference SSB for the serving cell being different from the center frequency and SCS for the selected reference SSB for the target cell, respectively.

[0013] Some aspects described herein relate to a user equipment (UE) for wireless communication. The user equipment may include: a memory; one or more processors coupled to the memory; and instructions stored in the memory and executable by the one or more processors. The instructions may be executable by the one or more processors to cause the user equipment to identify, for RRC reestablishment, whether a center frequency and a SCS of a reference SSB for a serving cell are the same as a center frequency and a SCS, respectively, of a reference SSB for a neighboring cell. The instructions may be executable by the one or more processors to cause the user equipment to initiate RRC reestablishment using one or more intra-frequency measurements based at least in part on the center frequency and SCS of the reference SSB for the serving cell being the same as the center frequency and SCS, respectively, of the reference SSB for the neighboring cell, or to initiate RRC reestablishment using one or more inter-frequency measurements based at least in part on the center frequency and SCS of the reference SSB for the serving cell being different from the center frequency and SCS, respectively, of the reference SSB for the neighboring cell.

[0014] Some aspects described herein relate to a network node for wireless communications. The network node may include: a memory; one or more processors coupled to the memory; and instructions stored in the memory and executable by the one or more processors. The instructions may be executable by the one or more processors to cause the network node to send configuration information indicating one or more reference SSBs for a serving cell or one or more reference SSBs for a neighboring cell. The instructions may be executable by the one or more processors to cause the network node to send an indication to perform an RRC reestablishment, the RRC reestablishment to be performed using one or more intra-frequency measurements based at least in part on a center frequency and SCS for a selected reference SSB for the serving cell being the same as a center frequency and SCS for a selected reference SSB for the neighboring cell, respectively, or to be performed using one or more inter-frequency measurements based at least in part on the center frequency and SCS for the selected reference SSB for the serving cell being different from the center frequency and SCS for the selected reference SSB for the neighboring cell, respectively.

[0015] Some aspects described herein relate to a non-transitory computer-readable medium storing one or more instructions for wireless communication by a UE. The one or more instructions, when executed by one or more processors of the UE, may cause the UE to, for a handover between a serving cell and a target cell, identify whether a center frequency and a SCS, respectively, of a reference SSB for the serving cell are the same as a center frequency and a SCS, respectively, of a reference SSB for the target cell. The one or more instructions, when executed by the one or more processors of the UE, may cause the UE to initiate a handover from the serving cell to the target cell using one or more intra-frequency measurement or handover conditions based at least in part on the center frequency and the SCS, respectively, of the reference SSB for the serving cell being the same as the center frequency and the SCS, respectively, of the reference SSB for the target cell, or to initiate a handover from the serving cell to the target cell using one or more inter-frequency measurement or handover conditions based at least in part on the center frequency and the SCS, respectively, of the reference SSB for the serving cell being different from the center frequency and the SCS, respectively, of the reference SSB for the target cell.

[0016] Some aspects described herein relate to a non-transitory computer-readable medium storing one or more instructions for wireless communication by a network node. The one or more instructions, when executed by one or more processors of the network node, may cause the network node to send configuration information indicating one or more reference SSBs for a serving cell or one or more reference SSBs for a target cell. The one or more instructions, when executed by one or more processors of the network node, may cause the network node to send an indication for performing a handover from the serving cell to the target cell, the handover being performed using one or more intra-frequency measurement or handover conditions based at least in part on a center frequency and SCS for a selected reference SSB for the serving cell being the same as a center frequency and SCS for a selected reference SSB for the target cell, respectively, or being performed using one or more inter-frequency measurement or handover conditions based at least in part on the center frequency and SCS for the selected reference SSB for the serving cell being different from the center frequency and SCS for the selected reference SSB for the target cell, respectively.

[0017] Some aspects described herein relate to a non-transitory computer-readable medium storing one or more instructions for wireless communication by a UE. When executed by one or more processors of the UE, the one or more instructions may cause the UE to identify, for RRC reestablishment, whether a center frequency and an SCS of a reference SSB for a serving cell are the same as a center frequency and an SCS of a reference SSB for a neighboring cell, respectively. When executed by one or more processors of the UE, the one or more instructions may cause the UE to initiate RRC reestablishment using one or more intra-frequency measurements based at least in part on the center frequency and the SCS of the reference SSB for the serving cell being the same as the center frequency and the SCS of the reference SSB for the neighboring cell, respectively, or to initiate RRC reestablishment using one or more inter-frequency measurements based at least in part on the center frequency and the SCS of the reference SSB for the serving cell being different from the center frequency and the SCS of the reference SSB for the neighboring cell, respectively.

[0018] Some aspects described herein relate to a non-transitory computer-readable medium storing one or more instructions for wireless communication by a network node. The one or more instructions, when executed by one or more processors of the network node, may cause the network node to send configuration information indicating one or more reference SSBs for a serving cell or one or more reference SSBs for a neighboring cell. The one or more instructions, when executed by the one or more processors of the network node, may cause the network node to send an indication for performing an RRC re-establishment, the RRC re-establishment to be performed using one or more intra-frequency measurements based at least in part on a center frequency and SCS for a selected reference SSB for the serving cell being the same as a center frequency and SCS for a selected reference SSB for the neighboring cell, respectively, or to be performed using one or more inter-frequency measurements based at least in part on the center frequency and SCS for the selected reference SSB for the serving cell being different from the center frequency and SCS for the selected reference SSB for the neighboring cell, respectively.

[0019] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include components for identifying, for a handover between a serving cell and a target cell, whether a center frequency and an SCS of a reference SSB for the serving cell are the same as a center frequency and an SCS of a reference SSB for the target cell, respectively. The apparatus may include components for initiating a handover from the serving cell to the target cell using one or more intra-frequency measurement or handover conditions based at least in part on the center frequency and the SCS of the reference SSB for the serving cell being the same as the center frequency and the SCS of the reference SSB for the target cell, respectively, or initiating a handover from the serving cell to the target cell using one or more inter-frequency measurement or handover conditions based at least in part on the center frequency and the SCS of the reference SSB for the serving cell being different from the center frequency and the SCS of the reference SSB for the target cell, respectively.

[0020] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include components for sending configuration information indicating one or more reference SSBs for a serving cell or one or more reference SSBs for a target cell. The apparatus may include components for sending an indication for performing a handover from the serving cell to the target cell, the handover being performed using one or more intra-frequency measurement or handover conditions based at least in part on the center frequency and SCS of the selected reference SSB for the serving cell being the same as the center frequency and SCS of the selected reference SSB for the target cell, respectively, or being performed using one or more inter-frequency measurement or handover conditions based at least in part on the center frequency and SCS of the selected reference SSB for the serving cell being different from the center frequency and SCS of the selected reference SSB for the target cell, respectively.

[0021] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include components for identifying, for RRC reestablishment, whether a center frequency and an SCS of a reference SSB for a serving cell are the same as the center frequency and SCS, respectively, of a reference SSB for a neighboring cell. The apparatus may include components for initiating RRC reestablishment using one or more intra-frequency measurements based at least in part on the center frequency and SCS of the reference SSB for the serving cell being the same as the center frequency and SCS, respectively, of the reference SSB for the neighboring cell, or initiating RRC reestablishment using one or more inter-frequency measurements based at least in part on the center frequency and SCS of the reference SSB for the serving cell being different from the center frequency and SCS, respectively, of the reference SSB for the neighboring cell.

[0022] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include a component for sending configuration information indicating one or more reference SSBs for a serving cell or one or more reference SSBs for a neighboring cell. The apparatus may include a component for sending an indication for performing an RRC reestablishment, the RRC reestablishment being performed using one or more intra-frequency measurements based at least in part on the center frequency and SCS of the selected reference SSB for the serving cell being the same as the center frequency and SCS of the selected reference SSB for the neighboring cell, respectively, or using one or more inter-frequency measurements based at least in part on the center frequency and SCS of the selected reference SSB for the serving cell being different from the center frequency and SCS of the selected reference SSB for the neighboring cell, respectively.

[0023] Aspects generally include methods, apparatus, 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 herein with reference to and as illustrated in the accompanying drawings.

[0024] The features and technical advantages of the examples according to the present disclosure have been outlined quite broadly above so that the detailed description that follows may be better understood. Additional features and advantages will be described below. The concepts and specific examples disclosed may be readily used as a basis for modifying or designing other structures for achieving the same purposes of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The characteristics of the concepts disclosed herein, both in terms of their organization and method of operation, and the associated advantages will be better understood by considering the following description in conjunction with the accompanying drawings. Each of the figures in the accompanying drawings is provided for the purpose of illustration and description and not as a definition of limitations to the claims.

[0025] Although various aspects are described in the present disclosure by illustrating some examples, it will be understood by those skilled in the art that such aspects can be implemented in many different arrangements and scenarios. The technology 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 devices based on non-module components (e.g., end-user devices, vehicles, communication equipment, computing equipment, industrial equipment, retail / shopping equipment, medical equipment and / or artificial intelligence devices). Various 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. The equipment incorporated into the various aspects and features described may include additional components and features for implementing and practicing the various aspects claimed and described. For example, the transmission and reception of wireless signals may include one or more components (e.g., hardware components, including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders and / or summers) for analog and digital purposes. The various aspects described herein are intended to be practiced in various devices, components, systems, distributed arrangements and / or end-user devices of various sizes, shapes and compositions. BRIEF DESCRIPTION OF THE DRAWINGS

[0026] In order that the above-mentioned features of the present disclosure may be fully understood, a more particular description of the invention briefly summarized above may be obtained by reference to various aspects (some of which are illustrated in the accompanying drawings). It should be noted, however, that the drawings illustrate only certain typical aspects of the present disclosure and are not therefore to be considered limiting of its scope, as the description may admit to other equally effective aspects. The same reference numerals in different drawings may identify the same or similar elements.

[0027] Figure 1 is a diagram illustrating an example of a wireless network according to the present disclosure.

[0028] Figure 2 is a diagram illustrating an example of communication between a network node and a user equipment (UE) in a wireless network according to the present disclosure.

[0029] Figure 3 is a diagram illustrating an example decomposed base station architecture according to the present disclosure.

[0030] Figure 4 is a diagram illustrating an example of bandwidth part and synchronization signal block configuration according to the present disclosure.

[0031] Figure 5 is a diagram illustrating an example of identifying a reference synchronization signal block for UE handover according to the present disclosure.

[0032] Figure 6is a diagram illustrating an example of identifying a reference synchronization signal block for radio resource control (RRC) re-establishment according to the present disclosure.

[0033] Figure 7 is a diagram illustrating an example process performed, for example, by a UE according to the present disclosure.

[0034] Figure 8 is a diagram illustrating an example process, for example, performed by a network node, according to the present disclosure.

[0035] Figure 9 is a diagram illustrating an example process performed, for example, by a UE according to the present disclosure.

[0036] Figure 10 is a diagram illustrating an example process, for example, performed by a network node, according to the present disclosure.

[0037] Figure 11 is a diagram of an example apparatus for wireless communications according to the present disclosure.

[0038] Figure 12 is a diagram of an example apparatus for wireless communications according to the present disclosure. DETAILED DESCRIPTION

[0039] Various aspects of the present disclosure are described more fully below with reference to the accompanying drawings. However, the present disclosure can be embodied in many different forms and should not be construed as limited to any specific structure or function presented throughout the present disclosure. Rather, these aspects are provided so that the present disclosure will be thorough and complete, and will fully convey the scope of protection of the present disclosure to those skilled in the art. It will be appreciated by those skilled in the art that the scope of the present disclosure is intended to cover any aspect of the present disclosure disclosed herein, whether implemented independently or in combination with any other aspect of the present disclosure. For example, any number of aspects set forth herein may be used to implement an apparatus or practice method. Furthermore, the scope of the present disclosure is intended to cover such apparatus or methods implemented using other structures, functions, or structures and functions in addition to or different from the various aspects of the disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of the present claims.

[0040] Several aspects of telecommunication systems 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 accompanying drawings by various blocks, modules, components, circuits, steps, processes, or algorithms (collectively, "elements"). These elements can be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0041] Although various aspects may be described herein using terminology generally associated with 5G or New Radio (NR) radio access technology (RAT), various aspects of the present disclosure may be applicable to other RATs, such as 3G RAT, 4G RAT, and / or post-5G (e.g., 6G) RATs.

[0042] Figure 1 1 is a diagram illustrating an example of a wireless network 100 according to 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 (illustrated as network node 110a, network node 110b, network node 110c, and network node 110d), user equipment (UE) 120 or multiple UEs 120 (illustrated as UE 120a, UE 120b, UE 120c, UE 120d, and UE 120e), and / or other entities. The network node 110 is a network node that communicates with the UE 120. As shown in the figure, the network node 110 may include one or more network nodes. For example, the network node 110 may be a converged network node, meaning that the converged network node is configured to utilize a radio protocol stack that is physically or logically integrated within a single radio access network (RAN) node (e.g., within a single device or unit). As another example, the network node 110 may be a disaggregated network node (sometimes referred to as a disaggregated base station), meaning that the network node 110 is configured to utilize a protocol stack that is physically or logically distributed 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)).

[0043] In some examples, network node 110 is or includes a network node (such as an RU) that communicates with UE 120 via a radio access link. In some examples, 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, 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, network node 110 (such as a converged network node 110 or a decomposed network node 110) may include multiple network nodes, such as one or more RUs, one or more CUs, and / or one or more DUs. 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 a network, a core network node, a network element, network equipment, a RAN node, or a combination thereof. In some examples, network nodes 110 may be interconnected to each other or to one or more other network nodes 110 in wireless network 100 using any suitable transport network via various types of fronthaul interfaces, midhaul interfaces, and / or backhaul interfaces, such as direct physical connections, air interfaces, or virtual networks.

[0044] In some examples, network node 110 may provide communication coverage for a particular geographic area. In the Third Generation Partnership Project (3GPP), the term "cell" may refer to the coverage area of ​​network node 110 and / or a network node subsystem serving that coverage area, depending on the context in which the term is used. Network node 110 may provide communication coverage for a macrocell, a picocell, a femtocell, and / or another type of cell. A macrocell may cover a relatively large geographic area (e.g., a radius of several kilometers) and may allow unrestricted access by UEs 120 with service subscriptions. A picocell may cover a relatively small geographic area and may allow unrestricted access by UEs 120 with service subscriptions. A femtocell may cover a relatively small geographic area (e.g., a home) and may allow restricted access by UEs 120 associated with the femtocell (e.g., UEs 120 in a closed subscriber group (CSG)). A network node 110 for a macrocell may be referred to as a macro network node. A network node 110 for a picocell 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. Figure 1In 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, the cells may not necessarily be stationary, and the geographic area of ​​the cells may move depending on the location of a mobile network node 110 (e.g., a mobile network node).

[0045] In some aspects, the term "base station" or "network node" may refer to a converged base station, a decomposed 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, a 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 device configured to perform one or more functions, such as those described herein in conjunction 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 in the same geographic location or in different geographic locations) may be configured to perform at least a portion of a function, or to repeatedly perform 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 of the base station functions but not another base station function. In this way, a single device may include more than one base station.

[0046] The wireless network 100 may include one or more relay stations. A relay station is a network node that can receive transmissions of data from an upstream node (e.g., a network node 110 or a UE 120) and transmit transmissions of data to a downstream node (e.g., a UE 120 or a network node 110). A relay station may be a UE 120 that can relay transmissions for other UEs 120. Figure 1 In the example shown in , a network node 110 d (e.g., a relay network node) may communicate with a network node 110 a (e.g., a macro network node) and a UE 120 d to facilitate communications between the network node 110 a and the UE 120 d. A network node 110 that relays communications may be referred to as a relay station, a relay base station, a relay network node, a relay node, a relay, etc.

[0047] The 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 transmit power levels, different coverage areas, and / or different impacts on interference in the wireless network 100. For example, a macro network node may have a high transmit power level (e.g., 5 watts to 40 watts), while a pico network node, a femto network node, and a relay network node may have a lower transmit power level (e.g., 0.1 watt to 2 watts).

[0048] The network controller 130 may be coupled to or in communication with a set of network nodes 110 and may provide coordination and control for the network nodes 110. The network controller 130 may communicate with the network nodes 110 via a backhaul communication link or a midhaul communication link. The network nodes 110 may also communicate directly with each other or indirectly via a wireless backhaul communication link or a wired backhaul communication link. In some aspects, the network controller 130 may be or may include a CU or a core network device.

[0049] UEs 120 may be dispersed throughout wireless network 100, and each UE 120 may be stationary or mobile. UE 120 may include, for example, an access terminal, a terminal, a mobile station, and / or a subscriber unit. UE 120 may be a cellular phone (e.g., a smartphone), 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, an ultrabook, a medical device, a biometric device, a wearable device (e.g., a smart watch, smart clothing, smart glasses, a smart wristband, smart jewelry (e.g., a smart ring or 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, a UE function of a network node, and / or any other suitable device configured to communicate via a wireless or wired medium.

[0050] The UE 120 and / or the network node 110 may include one or more chips, systems on a chip (SoCs), chipsets, packages, or devices that individually or collectively constitute or include a processing system. The processing system includes a processor (or "processing") circuit in the form of one or more processors, microprocessors, processing units (such as central processing units (CPUs), graphics processing units (GPUs), neural processing units (NPUs), and / or digital signal processors (DSPs)), processing blocks, application specific integrated circuits (ASICs), programmable logic devices (PLDs) (such as field programmable gate arrays (FPGAs)), or other discrete gate or transistor logic components or circuits (all of which may generally be referred to herein as "processors" individually or collectively as "processors" or "processor circuits"). One or more of these processors may be individually or collectively configurable to or configured to perform various functions or operations described herein. A group of processors that are collectively configurable or configured to perform a set of functions may include a first processor that is configurable or configured to perform a first function in the set, and a second processor that is configurable or configured to perform a second function in the set, or may include the group of processors that are all configured or configurable to perform the set of functions.

[0051] The processing system may also include memory circuitry in the form of one or more memory devices, memory blocks, memory elements, or other discrete gate or transistor logic components or circuitry, each of which may include a tangible storage medium such as random access memory (RAM) or read-only memory (ROM), or a combination thereof (all of which may generally be referred to herein as "memory," individually, or collectively as "memory" or "memory circuitry"). One or more of these memories may be coupled (e.g., operatively, communicatively, electronically, or electrically) to one or more of the processors and may individually or collectively store processor-executable code (e.g., software) that, when executed by one or more of the processors, may configure the one or more of the processors to perform various functions or operations described herein. Additionally or alternatively, in some examples, one or more of the processors may be preconfigured to perform various functions or operations described herein without requiring configuration by software. The processing system may also include or be coupled to one or more modems, such as a Wi-Fi (e.g., IEEE-compliant) modem or a cellular (e.g., 3GPP 4G LTE, 5G, or 6G-compliant) modem. In some implementations, one or more processors of the processing system include or implement one or more of the modems. The processing system may also include or be coupled to multiple radios (collectively, "radios"), multiple RF chains, or multiple transceivers, each of which may in turn be coupled to one or more of the multiple antennas. In some implementations, one or more processors of the processing system include or implement one or more of the radios, RF chains, or transceivers. UE 120 may include or be included in a housing that houses components associated with UE 120, including the processing system.

[0052] Some UEs 120 may be considered machine type communication (MTC) or evolved or enhanced machine type communication (eMTC) UEs. MTC UEs and / or eMTC UEs may include, for example, robots, drones, remote devices, sensors, meters, monitors, and / or location tags that can communicate with a network node, another device (e.g., a remote device), or some other entity. Some UEs 120 may be considered Internet of Things (IoT) devices and / or may be implemented as NB-IoT (narrowband IoT) devices. Some UEs 120 may be considered customer premises equipment. The UE 120 may be included within 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 may be coupled together. For example, the processor component (e.g., one or more processors) and the memory component (e.g., memory) may be operatively coupled, communicatively coupled, electronically coupled, and / or electrically coupled.

[0053] Generally speaking, any number of wireless networks 100 may be deployed in a given geographic area. Each wireless network 100 may support a specific RAT and may operate on one or more frequencies. A RAT may be referred to as a radio technology, air interface, etc. A frequency may be referred to as a carrier, frequency channel, etc. Each frequency may support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.

[0054] 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., without using network node 110 as an intermediary to communicate with each other). For example, UE 120 can communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, vehicle-to-everything (V2X) protocols (e.g., which may include vehicle-to-vehicle (V2V) protocols, vehicle-to-infrastructure (V2I) protocols, or vehicle-to-pedestrian (V2P) protocols), and / or mesh networks. In such examples, UE 120 can perform scheduling operations, resource selection operations, and / or other operations described elsewhere herein as being performed by network node 110.

[0055] The devices of the wireless network 100 can communicate using an electromagnetic spectrum, which can be subdivided into various categories, bands, channels, etc. based on 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–7.125 GHz) and FR2 (24.25 GHz–52.6 GHz). It should be understood that although a portion of FR1 is greater than 6 GHz, FR1 is often (interchangeably) referred to as the “sub-6 GHz” band in various documents and articles. A similar naming issue sometimes occurs with respect to FR2, which is often (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 as the “millimeter wave” band by the International Telecommunication Union (ITU).

[0056] Frequencies between FR1 and FR2 are generally referred to as mid-band frequencies. Recent 5G NR research has identified the operating band for these mid-band frequencies as frequency range designation FR3 (7.125 GHz–24.25 GHz). The frequency bands falling within FR3 can inherit FR1 characteristics and / or FR2 characteristics, thus effectively extending the features of FR1 and / or FR2 to mid-band frequencies. In addition, higher frequency bands are currently being explored to extend 5G NR operation to more than 52.6 GHz. For example, three higher operating bands have been identified as frequency range designations FR4a or FR4-1 (52.6 GHz–71 GHz), FR4 (52.6 GHz–114.25 GHz), and FR5 (114.25 GHz–300 GHz). Each of these higher frequency bands falls within the EHF band.

[0057] With the above examples in mind, unless otherwise specifically stated, it should be understood that if the term "sub-6 GHz" or the like is used herein, the term may broadly refer to frequencies that may be below 6 GHz, may be within FR1, or may include mid-band frequencies. Additionally, unless otherwise specifically stated, it should be understood that if the term "millimeter wave" or the like is used herein, the term may broadly refer to frequencies that may include mid-band frequencies, may be within FR2, FR4, FR4-a, FR4-1, and / or FR5, or may be within the EHF band. It is contemplated that the frequencies included in these operating bands (e.g., FR1, FR2, FR3, FR4, FR4-a, FR4-1, and / or FR5) may be modified, and the techniques described herein are applicable to those modified frequency ranges.

[0058] In some aspects, UE 120 may include a communications manager 140. As described in greater detail elsewhere herein, communications manager 140 may, for a handover between a serving cell and a target cell, identify whether a center frequency and subcarrier spacing (SCS) of a reference synchronization signal block (SSB) for the serving cell are the same as a center frequency and SCS, respectively, of a reference SSB for the target cell; and initiate a handover from the serving cell to the target cell using one or more intra-frequency measurement or handover conditions based at least in part on the center frequency and SCS, respectively, of the reference SSB for the serving cell being the same as a center frequency and SCS, respectively, of the reference SSB for the target cell, or initiate a handover from the serving cell to the target cell using one or more inter-frequency measurement or handover conditions based at least in part on the center frequency and SCS, respectively, of the reference SSB for the serving cell being different from a center frequency and SCS, respectively, of the reference SSB for the target cell. Additionally or alternatively, communications manager 140 may perform one or more other operations described herein.

[0059] In some aspects, the network node 110 may include a communications manager 150. As described in greater detail elsewhere herein, the communications manager 150 may send configuration information indicating one or more reference SSBs for a serving cell or one or more reference SSBs for a target cell; and send an indication for performing a handover from the serving cell to the target cell, the handover to be performed using one or more intra-frequency measurements or handover conditions based at least in part on the center frequency and SCS of the selected reference SSB for the serving cell being the same as the center frequency and SCS, respectively, of the selected reference SSB for the target cell, or to be performed using one or more inter-frequency measurements or handover conditions based at least in part on the center frequency and SCS, respectively, of the selected reference SSB for the serving cell being different from the center frequency and SCS, respectively, of the selected reference SSB for the target cell. Additionally or alternatively, the communications manager 150 may perform one or more other operations described herein.

[0060] In some aspects, the communication manager 140 may, for RRC re-establishment, identify whether the center frequency and SCS of the reference SSB for the serving cell are the same as the center frequency and SCS of the reference SSB for the neighboring cell, respectively; and initiate RRC re-establishment using one or more intra-frequency measurements based at least in part on the center frequency and SCS of the reference SSB for the serving cell being the same as the center frequency and SCS of the reference SSB for the neighboring cell, respectively, or initiate RRC re-establishment using one or more inter-frequency measurements based at least in part on the center frequency and SCS of the reference SSB for the serving cell being different from the center frequency and SCS of the reference SSB for the neighboring cell, respectively. Additionally or alternatively, the communication manager 140 may perform one or more other operations described herein.

[0061] In some aspects, the communication manager 150 may send configuration information indicating one or more reference SSBs for the serving cell or one or more reference SSBs for the neighboring cell; and send an indication for performing RRC re-establishment, the RRC re-establishment being performed using one or more intra-frequency measurements based at least in part on the center frequency and SCS of the selected reference SSB for the serving cell being the same as the center frequency and SCS of the selected reference SSB for the neighboring cell, respectively, or using one or more inter-frequency measurements based at least in part on the center frequency and SCS of the selected reference SSB for the serving cell being different from the center frequency and SCS of the selected reference SSB for the neighboring cell, respectively. Additionally or alternatively, the communication manager 150 may perform one or more other operations described herein.

[0062] As indicated above, Figure 1 are provided as examples. Other examples can be found in the Figure 1 The examples described are different.

[0063] Figure 2 2 is a diagram illustrating example 200 of a network node 110 communicating with a UE 120 in a wireless network 100 according to the present disclosure. The network node 110 may be equipped with a set of antennas 234a through 234t, such as T antennas (T ≥ 1). The UE 120 may be equipped with a set of antennas 252a through 252r, such as R antennas (R ≥ 1). The network node 110 of example 200 includes one or more radio frequency components, such as antennas 234 and a modem 232. In some examples, the network node 110 may include an interface, a communication component, or another component that facilitates communication with the UE 120 or another network node. Some network nodes 110 may not include radio frequency components, such as one or more CUs or one or more DUs, that facilitate direct communication with the UE 120.

[0064] At network node 110, transmit processor 220 may receive data intended for UE 120 (or a group of UEs 120) from data source 212. Transmit processor 220 may select one or more modulation and coding schemes (MCS) 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) the 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 allocation 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 signals (CRS) or demodulation reference signals (DMRS)) and synchronization signals (e.g., primary synchronization signals (PSS) or secondary synchronization signals (SSS)). The transmit (TX) multiple-input, multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on ​​data symbols, control symbols, overhead symbols, and / or reference symbols, as 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 the modem 232. Each modem 232 may process a corresponding output symbol stream (e.g., for OFDM) using a corresponding modulator component to obtain an output sample stream. Each modem 232 may also process (e.g., convert to analog, amplify, filter, and / or frequency upconvert) the output sample stream using a corresponding modulator component to obtain a downlink signal. The modems 232a through 232t may transmit a set of downlink signals (e.g., T downlink signals) via a corresponding set of antennas 234 (e.g., T antennas) (shown as antennas 234a through 234t).

[0065] 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 use a corresponding demodulator component to condition (e.g., filter, amplify, downconvert, and / or digitize) the received signal to obtain input samples. Each modem 254 may use the demodulator component to further process the input samples (e.g., for OFDM) to obtain received symbols. A MIMO detector 256 may obtain received symbols from the modem 254, may perform MIMO detection on the received symbols, if applicable, and may provide detected symbols. The receive processor 258 may process (e.g., demodulate and decode) the detected symbols, may provide decoded data for the UE 120 to a data sink 260, and may provide decoded control information and system information to 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, among other things, a reference signal received power (RSRP) parameter, a received signal strength indicator (RSSI) parameter, a reference signal received quality (RSRQ) parameter, and / or a CQI parameter. In some examples, one or more components of the UE 120 may be included in a housing 284.

[0066] 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.

[0067] One or more antennas (e.g., antennas 234a to 234t and / or antennas 252a to 252r) may include or be included within one or more antenna panels, one or more antenna groups, one or more groups of antenna elements, and / or one or more antenna arrays, etc. An antenna panel, antenna group, group of antenna elements, and / or antenna array may include one or more antenna elements (within a single housing or multiple housings), a group of coplanar antenna elements, a group of non-coplanar antenna elements, and / or be coupled to one or more transmit and / or receive components (such as, Figure 2 One or more antenna elements of one or more components in.

[0068] On the uplink, at the UE 120, a transmit processor 264 may receive and process data from a data source 262 and control information (e.g., for reports including RSRP, RSSI, RSRQ, and / or CQI) from the controller / processor 280. The transmit processor 264 may generate reference symbols for one or more reference signals. The symbols from the transmit processor 264 may be pre-decoded by the TX MIMO processor 266, if 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 an antenna 252, a modem 254, a MIMO detector 256, a receive processor 258, a transmit processor 264, and / or a TX MIMO processor 266. The transceiver may be used by a processor (eg, controller / processor 280) and memory 282 to execute the instructions herein (eg, reference Figures 5 to 12 ) any aspects of any of the methods described.

[0069] At network node 110, uplink signals from UE 120 and / or other UEs may be received by antenna 234, processed by modem 232 (e.g., a demodulator component (shown as DEMOD) of modem 232), detected by MIMO detector 236 (if applicable), and further processed by receive processor 238 to obtain decoded data and control information transmitted by UE 120. Receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to controller / processor 240. Network node 110 may include a communication unit 244 and may communicate with network controller 130 via communication unit 244. Network node 110 may include a scheduler 246 to schedule one or more UEs 120 for downlink and / or uplink communications. In some examples, modem 232 of network node 110 may include a modulator and a demodulator. In some examples, network node 110 includes a transceiver. The transceiver may include any combination of antenna 234, modem 232, MIMO detector 236, receive processor 238, transmit processor 220, and / or TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller / processor 240) and memory 242 to execute the instructions herein (e.g., reference 242). Figures 5 to 12 ) any aspects of any of the methods described.

[0070] The controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component of the network node 110 may perform one or more techniques associated with reference SSBs for UE handover, as described in more detail elsewhere herein. For example, the controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component of the may perform or direct e.g. Figure 6 The process of 600 Figure 7 700 and / or other processes as described herein. Memory 242 and memory 282 may store data and program codes 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 (e.g., code and / or program code) for wireless communication. For example, the one or more instructions, when executed (e.g., directly or after compilation, conversion, and / or interpretation) by one or more processors of network node 110 and / or UE 120, may cause the one or more processors, UE 120, and / or network node 110 to perform or direct, for example, Figure 6 The process of 600 Figure 7 The process 700 and / or operations of other processes as described herein. In some examples, executing instructions may include running instructions, converting instructions, compiling instructions, and / or interpreting instructions, etc.

[0071] In some aspects, the UE includes means for identifying, for a handover between the serving cell and the target cell, whether a center frequency and an SCS of a reference SSB for the serving cell are the same as a center frequency and an SCS of a reference SSB for the target cell, respectively; and / or means for initiating a handover from the serving cell to the target cell using one or more intra-frequency measurement or handover conditions based at least in part on the center frequency and the SCS of the reference SSB for the serving cell being the same as a center frequency and an SCS of the reference SSB for the target cell, respectively, or using one or more inter-frequency measurement or handover conditions based at least in part on the center frequency and the SCS of the reference SSB for the serving cell being different from a center frequency and an SCS of the reference SSB for the target cell, respectively. Means for a user equipment (UE) to perform the operations described herein may include, for example, one or more of the communications manager 140, the antenna 252, the modem 254, the MIMO detector 256, the receive processor 258, the transmit processor 264, the TX MIMO processor 266, the controller / processor 280, or the memory 282.

[0072] In some aspects, the network node includes means for transmitting configuration information indicating one or more reference SSBs for a serving cell or one or more reference SSBs for a target cell; and / or means for transmitting an indication for performing a handover from the serving cell to the target cell, the handover to be performed using one or more intra-frequency measurement or handover conditions based at least in part on the center frequency and SCS of the selected reference SSB for the serving cell being the same as the center frequency and SCS, respectively, of the selected reference SSB for the target cell, or to be performed using one or more inter-frequency measurement or handover conditions based at least in part on the center frequency and SCS, respectively, of the selected reference SSB for the serving cell being different from the center frequency and SCS, respectively, of the selected reference SSB for the target cell. Means for the network node to perform the operations described herein may include, for example, one or more of the following: the communications manager 150, the transmit processor 220, the TX MIMO processor 230, the modem 232, the antenna 234, the MIMO detector 236, the receive processor 238, the controller / processor 240, the memory 242, or the scheduler 246.

[0073] In some aspects, the UE includes means for identifying, for RRC re-establishment, whether a center frequency and SCS of a reference SSB for a serving cell are the same as a center frequency and SCS, respectively, of a reference SSB for a neighboring cell; and / or means for initiating RRC re-establishment using one or more intra-frequency measurements based at least in part on the center frequency and SCS of the reference SSB for the serving cell being the same as a center frequency and SCS, respectively, of a reference SSB for a neighboring cell, or using one or more inter-frequency measurements based at least in part on the center frequency and SCS of the reference SSB for the serving cell being different from a center frequency and SCS, respectively, of a reference SSB for a neighboring cell. Means for a user equipment (UE) to perform the operations described herein may include, for example, one or more of the communications manager 140, the antenna 252, the modem 254, the MIMO detector 256, the receive processor 258, the transmit processor 264, the TX MIMO processor 266, the controller / processor 280, or the memory 282.

[0074] In some aspects, the network node includes means for transmitting configuration information indicating one or more reference SSBs for a serving cell or one or more reference SSBs for a neighboring cell; and / or means for transmitting an indication for performing an RRC re-establishment, the RRC re-establishment to be performed using one or more intra-frequency measurements based at least in part on the center frequency and SCS of the selected reference SSB for the serving cell being the same as the center frequency and SCS, respectively, of the selected reference SSB for the neighboring cell, or using one or more inter-frequency measurements based at least in part on the center frequency and SCS of the selected reference SSB for the serving cell being different from the center frequency and SCS, respectively, of the selected reference SSB for the neighboring cell. Means for the network node to perform the operations described herein may include, for example, one or more of the following: the communications manager 150, the transmit processor 220, the TX MIMO processor 230, the modem 232, the antenna 234, the MIMO detector 236, the receive processor 238, the controller / processor 240, the memory 242, or the scheduler 246.

[0075] Although Figure 2 The blocks in FIG. 2 are illustrated as distinct components, but the functionality described above with respect to these blocks may be implemented in a single hardware, software, or combined component or in various combinations of components. For example, the functionality described with respect to the transmit processor 264, the receive processor 258, and / or the TX MIMO processor 266 may be performed by or under the control of the controller / processor 280.

[0076] As indicated above, Figure 2 are provided as examples. Other examples can be found in the Figure 2 The examples described are different.

[0077] The deployment of a communication system such as a 5G NR system can be arranged in a variety of ways with various components or constituent parts. In a 5G NR system or network, a network node, a network entity, a mobility element of the network, a RAN node, a core network node, a network element, a base station or network equipment may be implemented in an aggregated architecture or a decomposed architecture. For example, a base station (such as a node B (NB), an evolved NB (eNB), an NR base station, a 5G NB, an access point (AP), a TRP or a cell, etc.) or one or more units (or one or more components) performing base station functions may be implemented as an aggregated base station (also referred to as an independent base station or a monolithic base station) or a decomposed base station. A “network entity” or a “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).

[0078] A converged base station (e.g., a converged 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 decomposed base station (e.g., a decomposed 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, the 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. The 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), among others.

[0079] Base station type operation or network design may take into account the aggregated nature of base station functionality. For example, a disaggregated base station 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 scaling of the communication system by separating base station functionality into one or more units that can be deployed separately. A disaggregated 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 may enable flexibility in network design. Various units of the disaggregated base station may be configured for wired or wireless communication with at least one other unit of the disaggregated base station.

[0080] Figure 3 FIG2 is a diagram illustrating an example decomposed base station architecture 300 according to the present disclosure. The decomposed 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 decomposed control units (such as a near-RT RIC 325 via an E2 link, 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 of the DUs 330 may communicate with one or more RUs 340 via respective fronthaul links. Each of the RUs 340 may communicate with one or more UEs 120 via respective radio frequency (RF) access links. In some implementations, a UE 120 may be served simultaneously by multiple RUs 340.

[0081] Each of the units (including the CU 310, DU 330, RU 340) and the near-RT RIC 325, the non-RT RIC 315, and the SMO framework 305 may include or be coupled to one or more interfaces configured to receive or transmit signals, data, or information (collectively, signals) via a wired or wireless transmission medium. Each of the units, or an associated processor or controller that provides instructions to one or more communication interfaces of the corresponding unit, may be configured to communicate with one or more of the other units via the transmission medium. In some examples, each of the units may include a wired interface configured to receive signals or transmit signals to one or more of the other units via a wired transmission medium, and a wireless interface that may include a receiver, a transmitter, or a transceiver (such as an RF transceiver) configured to receive signals or transmit signals to one or more of the other units via a wireless transmission medium, or both.

[0082] In some aspects, the CU 310 may host one or more higher layer 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, among others. Each control function may be implemented using an interface that is configured to communicate signals with other control functions hosted by the CU 310. The CU 310 may be configured to handle user plane functions (e.g., central unit-user plane (CU-UP) functions), control plane functions (e.g., central unit-control plane (CU-CP) functions), or a combination thereof. In some implementations, the CU 310 may be logically split into one or more CU-UP units and one or more CU-CP units. When implemented in an O-RAN configuration, the CU-UP unit may communicate bidirectionally with the CU-CP unit via an interface (such as an E1 interface). As needed, the CU 310 may be implemented to communicate with the DU 330 for network control and signaling.

[0083] 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 a radio link control (RLC) layer, a medium access control (MAC) layer, and one or more higher physical (PHY) layers, at least in part according to a functional split (such as that defined by 3GPP). In some aspects, the one or more higher PHY layers may be implemented by one or more modules for forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, and the like. In some aspects, the DU 330 may also host one or more lower PHY layers, such as those 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. 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.

[0084] Each RU 340 may implement lower layer functions. 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 based on functional split (e.g., functional split defined by 3GPP) (such as lower layer functional split), such as performing FFT, performing iFFT, digital beamforming, or PRACH extraction and filtering, etc. In this architecture, each RU 340 may be operated to handle over-the-air (OTA) communications with one or more UEs 120. In some specific implementations, real-time and non-real-time aspects of control plane and user plane communications 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).

[0085] The SMO framework 305 can be configured to support RAN deployment and provisioning of both non-virtualized 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, which can be managed via an operations and maintenance interface (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 implementations, the SMO framework 305 can communicate with hardware aspects of the 4G RAN (such as the Open eNB (O-eNB) 311) via the O1 interface. Additionally, in some implementations, the SMO framework 305 can communicate directly with each of the one or more RUs 340 via a corresponding O1 interface. The SMO framework 305 can also include a non-RT RIC 315 configured to support the functionality of the SMO framework 305.

[0086] The non-RT RIC 315 can be configured to include logic that enables non-real-time control and optimization of RAN elements and resources, artificial intelligence / machine learning (AI / ML) workflows including model training and updating, or policy-based guidance of applications / features in the near-RT RIC 325. The non-RT RIC 315 can be coupled to or in communication with the near-RT RIC 325 (e.g., via an A1 interface). The near-RT RIC 325 can be configured to include logic that enables near-real-time control and optimization of RAN elements and resources through data collection and actions over an interface (e.g., via an E2 interface) that connects one or more CUs 310, one or more DUs 330, or both, and the O-eNB with the near-RT RIC 325.

[0087] In some implementations, the non-RT RIC 315 may receive parameters or external enrichment information from an external server in order to generate an AI / ML model to be deployed in the near-RT RIC 325. Such information may be utilized by the near-RT RIC 325 and may be received from a non-network data source or from a network function 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 regulate RAN behavior or performance. For example, the non-RT RIC 315 may monitor long-term trends and patterns in performance and employ AI / ML models to perform corrective actions through the SMO framework 305 (such as via reconfiguration of the O1 interface) or through the creation of RAN management policies (such as A1 interface policies).

[0088] As indicated above, Figure 3 are provided as examples. Other examples can be found in the Figure 3 The examples described are different.

[0089] Figure 4 4 is a diagram illustrating an example 400 of bandwidth part and synchronization signal block configuration according to the present disclosure. A UE may perform a handover from a serving cell 405 to a target cell 410. For example, the handover may be performed based at least in part on movement of the UE from the coverage area of ​​the serving cell 405 to the coverage area of ​​the target cell 410 and / or based at least in part on reference signal measurements associated with the serving cell 405 and the target cell 410. The handover may be from an NR primary cell (PCell) to another NR cell, such as another NR PCell or an NR secondary cell (SCell).

[0090] In some cases, the UE may receive a radio resource control (RRC) message from the serving cell 405 and / or the target cell 410 instructing the UE to perform a handover. The UE may need to be prepared to perform a handover within D from the end of the last transmit time interval (TTI) containing the RRC command. handover In some cases, D handover may be equal to the applicable RRC procedure delay (e.g., as defined in Technical Specification (TS) 38.331 clause 12 of the 3GPP specification) plus the interruption time T interrupt , where T interrupt is defined as follows:

[0091] T interrupt =T search +T IU +T processing +T Δ +T margin ms, where

[0092] T search is the time required for the UE to search for the target cell when it is unknown when the handover command will be received by the UE;

[0093] T IU is the interruption uncertainty when acquiring the first available PRACH opportunity in the target cell;

[0094] T processing is the processing time associated with the UE;

[0095] T Δ is the time used for fine time tracking and obtaining complete timing information of the target cell; and

[0096] T margin is the time used for SSB post-processing.

[0097] In some cases, T search It may depend on whether the handover is an intra-frequency handover or an inter-frequency handover. If the center frequency of the SSB used for the serving cell and the center frequency of the SSB used for the neighboring cell (e.g., the target cell) are the same, and the SCS of the SSB used for the serving cell and the SCS of the SSB used for the neighboring cell are also the same, then the handover may be classified as an intra-frequency handover. For RedCap UEs, if the target cell is known, then T search =0ms. If the target cell is an unknown intra-frequency cell and the target cell Es / Iot≥-2dB, then T search =2*T rs If the target cell is an unknown inter-frequency cell and the target cell Es / Iot ≥ -2dB, then T search =5*T rs In some cases, if the first active DL bandwidth part (BWP) included in the handover command is configured with nonCellDefiningSSB-r17, then T rs It can be a synchronization signal block measurement timing configuration (SMTC) configured in the measObjectNR of the SCS with the same SSB frequency and SCS as the non-cell definition (NCD)-SSB indicated by nonCellDefiningSSB-r17 (otherwise, the cell definition (CD)-SSB indicated by absoluteFrequencySSB in the frequencyInfoDL in the handover command).

[0098] In some cases, classifying a handover from the serving cell 405 to the target cell 410 as intra-frequency or inter-frequency may depend on whether the SSBs of the target cell 410 are measured as intra-frequency or inter-frequency measurement objects.

[0099] In some cases, the UE may be a reduced capability (RedCap) UE. A RedCap UE is a UE with a reduced or limited set of features or capabilities, such as a subset of the features and capabilities described above in connection with UE 120. A RedCap UE (e.g., as defined by Feature 28-1 in the 3GPP specifications) may have one or more of the features indicated in Table 1:

[0100] Table 1

[0101]

[0102]

[0103] In some cases, for RedCap UEs, more than one SSB may be indicated as the SSB of the serving cell. RAN2 defines which SSB will be used as the reference SSB for defining intra-frequency measurements and inter-frequency measurements. In some cases, a BWP-specific serving cell measurement object (MO) (servingCellMO) may be defined under BWP-DownlinkDedicated, and the SSB indicated in the servingCellMO is the reference SSB to be used for serving cell measurements when the UE is in that active BWP. If this indication is not present, the SSB defined in the servingCellMO under ServingCellConfig is the reference SSB to be used for serving cell measurements. This reference SSB can be used to define intra-frequency measurements. In some cases, a RedCap UE may be handed over to a BWP that contains an NCD-SSB but not a CD-SSB.

[0104] In a handover procedure for a non-RedCap UE (e.g., legacy handover), a single SSB (e.g., CD-SSB) may be present in the target cell. This SSB may be designated as the servingCellMO of the target cell and may be used for cell search and measurements in the target cell during and after the handover procedure. This SSB may also be present in the firstActiveBWP of the target cell and may be configured as the targetCellMO of the serving cell.

[0105] In some cases, a RedCap UE may be configured with multiple SSBs in the serving cell and / or the target cell. For example, a RedCap UE may be configured with a CD-SSB and one or more NCD-SSBs in the serving cell, and / or may be configured with a CD-SSB and one or more NCD-SSBs in the target cell. The RedCap UE (and / or the network node) may not be able to determine which SSB of the target cell will be used to classify the handover as an intra-frequency handover or an inter-frequency handover. For example, the RedCap UE may not be able to determine whether to use the SSB configured in the targetCellMO of the serving cell, the SSB configured in the firstActiveBWP of the target cell, or the SSB configured in the servingCellMO of the target cell as the reference SSB for the target cell. Additionally or alternatively, the RedCap UE (and / or the network node) may not be able to determine which SSB of the serving cell will be used to classify the handover as an intra-frequency handover or an inter-frequency handover. For example, a RedCap UE may not be able to determine whether to use the SSB configured within the active BWP or the SSB defined in the servingCellMO or the BWP-specific servingCellMO (if defined) as the reference SSB for the serving cell. Consequently, the UE (and / or network node) may not be able to accurately determine timing information for performing a handover from the serving cell to the target cell, such as the time to search for the target cell.

[0106] This document describes techniques and apparatus for a reference SSB for UE handover according to the present disclosure. The UE may, for a handover between a serving cell and a target cell, identify whether a center frequency and an SCS of a reference SSB for a serving cell are the same as a center frequency and an SCS of a reference SSB for a target cell, respectively. The UE may initiate a handover from a serving cell to a target cell using one or more intra-frequency measurement and / or handover conditions based at least in part on the center frequency and the SCS of the reference SSB for the serving cell being the same as a center frequency and an SCS of the reference SSB for the target cell, respectively. Alternatively, the UE may initiate a handover from a serving cell to a target cell using one or more inter-frequency measurement and / or handover conditions based at least in part on the center frequency and the SCS of the reference SSB for the serving cell being different from a center frequency and an SCS of the reference SSB for the target cell, respectively. The reference SSB for the serving cell may correspond to, for example, an SSB configured in a serving cell measurement object, an SSB configured in a bandwidth portion-specific serving cell measurement object, or an SSB configured in an active bandwidth portion of the serving cell. The reference SSB for the target cell may correspond to, for example, an SSB configured in the first active bandwidth portion of the target cell, an SSB configured in a serving cell measurement object of the target cell, an SSB configured in a bandwidth portion-specific serving cell measurement object of the target cell, or an SSB configured in a target cell measurement object of the serving cell. This may enable the UE (and / or network node) to determine timing information for performing a handover from the serving cell to the target cell, such as the time to search for the target cell. Additional details are described herein.

[0107] As indicated above, Figure 4 are provided as examples. Other examples can be found in the Figure 4 The examples described are different.

[0108] Figure 5 5 is a diagram illustrating an example 500 of identifying a reference SSB for UE handover according to the present disclosure. UE 505 may communicate with network node 510 and network node 515. For example, network node 510 may be associated with a serving cell, network node 515 may be associated with a target cell, and UE 505 may communicate with network node 510 and network node 515 when performing a handover from the serving cell to the target cell. In some aspects, UE 505 may be a RedCap UE.

[0109] As indicated by reference numeral 520, the network node 510 may send configuration information, and the UE 505 may receive the configuration information. The configuration information may indicate a reference SSB for the serving cell and / or a reference SSB for the target cell. In some aspects, the configuration information may indicate two or more reference SSBs for the serving cell. For example, the configuration information may indicate one CD-SSB for the serving cell and one or more NCD-SSBs for the serving cell. Additionally or alternatively, the configuration information may indicate two or more reference SSBs for the target cell. For example, the configuration information may indicate one CD-SSB for the target cell and one or more NCD-SSBs for the target cell. The configuration information may be indicated, for example, via sidelink control information (SCI), a medium access control (MAC) control element (CE) (MAC-CE), a radio resource control (RRC) message, system information, and / or in a handover command, among others. In some aspects, the configuration information may be indicated in a specification, such as a 3GPP specification.

[0110] In some aspects, UE 505 may be configured (eg, pre-configured) with configuration information and / or may receive configuration information from another device or network node. In this case, UE 505 may not receive configuration information from network node 510.

[0111] As indicated by reference numeral 525, network node 510 may send a handover indication and UE 505 may receive the handover indication. The handover indication may instruct UE 505 to perform a handover from the serving cell (and / or network node 510) to the target cell (and / or network node 515).

[0112] As indicated by reference numeral 530, the UE 505 may identify whether the center frequency and SCS of the reference SSB for the serving cell are the same as the center frequency and SCS, respectively, of the reference SSB for the target cell. In some aspects, the reference SSB for the serving cell may correspond to, for example, an SSB configured in a serving cell measurement object (servingCellM0), an SSB configured in a bandwidth part-specific serving cell measurement object (BWP-specific servingCellM0), or an SSB configured in an active bandwidth part of the serving cell, etc. The reference SSB for the target cell may correspond to, for example, an SSB configured in a first active bandwidth part (firstActiveBWP) of the target cell, an SSB configured in a serving cell measurement object (servingCellM0) of the target cell, an SSB configured in a bandwidth part-specific serving cell measurement object (BWP-specificservingCellM0) of the target cell, or an SSB configured in a target cell measurement object (targetCellM0) of the serving cell, etc.

[0113] In some aspects, the reference SSB for the serving cell may correspond to the SSB configured in the servingCellMO (or BWP-specific servingCellMO if configured) of the serving cell, and the reference SSB for the target cell may correspond to the SSB configured in the firstActiveBWP of the target cell. In this case, as shown in Table 2, the handover may be classified as an intra-frequency handover ("Intra") or an inter-frequency handover ("Inter").

[0114] Table 2

[0115]

[0116] In some aspects, the reference SSB for the serving cell may correspond to the SSB configured in the servingCellMO (or BWP-specific servingCellMO, if configured) of the serving cell, and the reference SSB for the target cell may correspond to the SSB configured in the servingCellMO (or BWP-specific servingCellMO, if configured) of the target cell. In this case, as shown in Table 3, the handover may be considered an intra-frequency handover or an inter-frequency handover.

[0117] Table 3

[0118]

[0119] As indicated by reference numeral 535, the UE 505 may initiate a handover from the serving cell to the target cell using one or more intra-frequency measurements and / or handover conditions based at least in part on the center frequency and SCS of the reference SSB for the serving cell being the same as the center frequency and SCS of the reference SSB for the target cell, respectively. Alternatively, the UE 505 may initiate a handover from the serving cell to the target cell using one or more inter-frequency measurements and / or handover conditions based at least in part on the center frequency and SCS of the reference SSB for the serving cell being different from the center frequency and SCS of the reference SSB for the target cell, respectively. The one or more intra-frequency measurements may be associated with, for example, a first search time (e.g., T search =T rs Alternatively, one or more inter-frequency measurements may correspond to a second search time (e.g., T search =3*T rs ms) corresponding to the

[0120] In some aspects, the UE 505 may receive an indication of a priority for selecting a reference SSB from a plurality of SSBs. For example, the reference SSB for the serving cell may correspond to an SSB in the active BWP of the serving cell or an SSB in the servingCellMO of the serving cell. The priority information may indicate the use of an SSB corresponding to the SSB in the active BWP of the serving cell if configured, otherwise, the use of an SSB corresponding to the SSB in the servingCellMO of the serving cell. The priority information may be indicated, for example, via sidelink control information (SCI), a medium access control (MAC) control element (CE) (MAC-CE), a radio resource control (RRC) message, system information, and / or in a handover command. In some aspects, the priority information may be indicated in a specification such as a 3GPP specification. In some aspects, the priority information may indicate an order for selecting a reference SSB from a plurality of reference SSBs.

[0121] In some aspects, the UE 505 may select a reference SSB from a plurality of SSBs based at least in part on UE capability information. For example, the UE 505 may be configured with a CD-SSB or an NCD-SSB in an active BWP. The UE 505 may select an SSB in the active BWP as the reference SSB for the serving cell. In some aspects, the UE 505 (e.g., a 28-1a UE, as described in Table 1) may not be guaranteed to have any SSBs in the active BWP. Therefore, the UE 505 may select an SSB corresponding to an SSB in the servingCellM0 of the serving cell as the reference SSB (e.g., even if the UE 505's active BWP includes an SSB). The type of the UE 505 (e.g., whether the UE is a 28-1 UE or a 28-1a UE) may affect the selection of the reference SSB for the target cell after the handover is completed. Additionally or alternatively, the type of the UE may affect the reference SSB of the serving cell.

[0122] The UE 505 and the network node 515 may communicate a handover complete message, as indicated by reference numeral 540. Additionally, the UE 505 and the network node 515 may communicate other information after the handover is complete.

[0123] As indicated above, Figure 5 are provided as examples. Other examples can be found in the Figure 5 The examples described are different.

[0124] When a UE in the RRC_CONNECTED state loses the RRC connection due to one or more failure conditions (such as radio link failure, handover failure, or RRC connection reconfiguration failure), RRC connection reestablishment may be initiated. In the RRC_CONNECTED state, the UE may be able to reestablish the RRC connection within T from the time the UE detects the RRC connection loss. re-establish_delay The total RRC connection delay (T re-establish_delay ) can be less than:

[0125] T re-establish_delay =T UE_re-establish_delay +T UL_grant ,in

[0126] T UL_grant The time required to obtain and process an uplink grant from a neighboring PCell. An uplink grant may be required to send an RRCRe-establishmentRequest message.

[0127] Figure 6 6 is a diagram illustrating an example 600 of identifying a reference SSB for RRC reestablishment according to the present disclosure. UE 605 may communicate with network node 610 and network node 615. Network node 610 may be associated with a serving cell, and network node 615 may be associated with a neighboring cell. In some aspects, UE 605 may be a RedCap UE.

[0128] As indicated by reference numeral 620, the network node 610 may send configuration information, and the UE 605 may receive the configuration information. The configuration information may indicate a reference SSB for the serving cell and / or a reference SSB for a neighboring cell. In some aspects, the configuration information may indicate two or more reference SSBs for the serving cell. For example, the configuration information may indicate one CD-SSB for the serving cell and one or more NCD-SSBs for the serving cell. Additionally or alternatively, the configuration information may indicate two or more reference SSBs for a neighboring cell. For example, the configuration information may indicate one CD-SSB for a neighboring cell and one or more NCD-SSBs for a neighboring cell. The configuration information may be indicated, for example, via sidelink control information (SCI), a medium access control (MAC) control element (CE) (MAC-CE), a radio resource control (RRC) message, and / or system information, among others. In some aspects, the configuration information may be indicated in a specification, such as a 3GPP specification.

[0129] As indicated by reference numeral 625, the UE 605 may identify whether the center frequency and SCS of the reference SSB for the serving cell are the same as the center frequency and SCS, respectively, of the reference SSB for the neighboring cell. In some aspects, the reference SSB for the serving cell may correspond to a cell-defining SSB of the serving cell, an SSB configured in the active bandwidth portion of the serving cell, an SSB configured in a serving cell measurement object (servingCellMO) or a bandwidth part-specific serving cell measurement object (BWP-specific servingCellMO) if configured, and the like. The reference SSB for the neighboring cell may correspond to a cell-defining SSB, a non-cell-defining SSB in one or more non-cell-defining SSBs if configured, or an SSB configured in a measurement object for the neighboring cell, and the like.

[0130] As indicated by reference numeral 630, the UE 605 may initiate RRC re-establishment using one or more intra-frequency measurements based at least in part on the center frequency and SCS of the reference SSB for the serving cell being the same as the center frequency and SCS of the reference SSB for the neighboring cell, respectively. Alternatively, the UE 605 may initiate RRC re-establishment using one or more inter-frequency measurements based at least in part on the center frequency and SCS of the reference SSB for the serving cell being different from the center frequency and SCS of the reference SSB for the neighboring cell, respectively.

[0131] In some aspects, the UE 605 may receive an indication of a priority for selecting a reference SSB from a plurality of SSBs. For example, the reference SSB for the serving cell may correspond to an SSB in the active BWP of the serving cell or an SSB in the servingCellMO of the serving cell. The priority information may indicate the use of an SSB corresponding to the SSB in the active BWP of the serving cell if configured, otherwise, the use of an SSB corresponding to the SSB in the servingCellMO of the serving cell. The priority information may be indicated, for example, via sidelink control information (SCI), a medium access control (MAC) control element (CE) (MAC-CE), a radio resource control (RRC) message, system information, and / or in an RRC reestablishment command. In some aspects, the priority information may be indicated in a specification such as a 3GPP specification. In some aspects, the priority information may indicate an order for selecting a reference SSB from a plurality of reference SSBs.

[0132] In some aspects, the UE 605 may select a reference SSB from a plurality of SSBs based at least in part on UE capability information. For example, the UE 605 may be configured with a CD-SSB or an NCD-SSB in an active BWP. The UE 605 may select an SSB in the active BWP as the reference SSB for the serving cell. In some aspects, the UE 605 (e.g., a 28-1a UE, as described in Table 1) may not be guaranteed to have any SSBs in the active BWP. Therefore, the UE 605 may select an SSB corresponding to an SSB in the servingCellM0 of the serving cell as the reference SSB (e.g., even if the UE 605's active BWP includes an SSB). The type of the UE 605 (e.g., whether the UE is a 28-1 UE or a 28-1a UE) may affect the selection of the reference SSB for the neighboring cell after RRC reestablishment is complete. Additionally or alternatively, the type of the UE may affect the reference SSB for the serving cell.

[0133] As indicated by reference numeral 635, the UE 605 and the network node 615 may communicate an RRC re-establishment complete message.

[0134] As indicated above, Figure 6 are provided as examples. Other examples can be found in the Figure 6 The examples described are different.

[0135] Figure 7 is a diagram illustrating an example process 700, performed, for example, by a UE, in accordance with the present disclosure. Example process 700 is an example in which a UE (eg, UE 120) performs operations associated with identifying a reference SSB.

[0136] like Figure 7 As shown, in some aspects, process 700 may include, for a handover between a serving cell and a target cell, identifying whether a center frequency and a subcarrier spacing (SCS) of a reference synchronization signal block (SSB) for the serving cell are the same as a center frequency and a subcarrier spacing (SCS) of a reference SSB for the target cell, respectively (block 710). For example, a UE (e.g., using Figure 11 The communication manager 1106 depicted in the figure can identify whether the center frequency and subcarrier spacing (SCS) of the reference synchronization signal block (SSB) used for the serving cell are the same as the center frequency and SCS of the reference SSB used for the target cell, respectively, for a handover between the serving cell and the target cell, as described above.

[0137] like Figure 7As further shown, in some aspects, process 700 may include initiating handover from the serving cell to the target cell using one or more intra-frequency measurement or handover conditions based at least in part on a center frequency and SCS for a reference SSB for the serving cell being the same as a center frequency and SCS, respectively, for a reference SSB for the target cell, or initiating handover from the serving cell to the target cell using one or more inter-frequency measurement or handover conditions based at least in part on a center frequency and SCS for a reference SSB for the serving cell being different than a center frequency and SCS, respectively, for a reference SSB for the target cell (block 720). For example, the UE (e.g., using Figure 11 The communication manager 1106 depicted in the figure may initiate a handover from the serving cell to the target cell using one or more intra-frequency measurement or handover conditions based at least in part on the center frequency and SCS of the reference SSB for the serving cell being the same as the center frequency and SCS of the reference SSB for the target cell, respectively, or initiate a handover from the serving cell to the target cell using one or more inter-frequency measurement or handover conditions based at least in part on the center frequency and SCS of the reference SSB for the serving cell being different from the center frequency and SCS of the reference SSB for the target cell, respectively, as described above.

[0138] Process 700 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0139] In a first aspect, the UE is a reduced capability UE.

[0140] In a second aspect, alone or in combination with the first aspect, the UE is configured with at least two SSBs for a serving cell or at least two SSBs for a target cell.

[0141] In a third aspect, alone or in combination with one or more of the first and second aspects, at least two SSBs for the serving cell include a cell-defining SSB and one or more non-cell-defining SSBs, and at least two SSBs for the target cell include a cell-defining SSB and one or more non-cell-defining SSBs.

[0142] In a fourth aspect, either alone or in combination with one or more of the first to third aspects, the reference SSB for the serving cell corresponds to the SSB configured in the serving cell measurement object, the SSB configured in the bandwidth part-specific serving cell measurement object where configured, or the SSB configured in the active bandwidth part of the serving cell.

[0143] In the fifth aspect, alone or in combination with one or more of the first to fourth aspects, the reference SSB for the target cell corresponds to the SSB configured in the first active bandwidth part of the target cell, the SSB configured in the serving cell measurement object of the target cell, the SSB configured in the bandwidth part-specific serving cell measurement object of the target cell if configured, or the SSB configured in the target cell measurement object of the serving cell.

[0144] In a sixth aspect, alone or in combination with one or more of aspects 1 to 5, process 700 includes receiving priority information for selecting a reference SSB for a serving cell from a plurality of SSBs for a serving cell or for selecting a reference SSB for a target cell from a plurality of SSBs for a target cell.

[0145] In a seventh aspect, either alone or in combination with one or more of aspects one to six, receiving priority information comprises receiving downlink control information, a medium access control message, a radio resource control message, system information or a handover command comprising priority information.

[0146] In an eighth aspect, either alone or in combination with one or more of aspects 1 to 7, process 700 includes selecting a reference SSB for a serving cell from a plurality of SSBs for a serving cell, or selecting a reference SSB for a target cell from a plurality of SSBs for a target cell based at least in part on UE capability information.

[0147] although Figure 7 Example blocks of process 700 are shown, but in some aspects, process 700 may include Figure 7 The blocks may include additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in process 700. Additionally or alternatively, two or more blocks of the blocks of process 700 may be executed in parallel.

[0148] Figure 8 is a diagram illustrating an example process 800, performed, for example, by a network node, in accordance with the present disclosure. Example process 800 is an example in which a network node (eg, network node 110) performs operations associated with identifying a reference SSB.

[0149] like Figure 8 As shown, in some aspects, process 800 may include sending configuration information indicating one or more reference synchronization signal blocks (SSBs) for a serving cell or one or more reference SSBs for a target cell (block 810). For example, a network node (e.g., using Figure 12The sending component 1204 and / or the communication manager 1206 depicted in the figure may send configuration information indicating one or more reference synchronization signal blocks (SSBs) for the serving cell or one or more reference SSBs for the target cell, as described above.

[0150] like Figure 8 As further shown, in some aspects, process 800 may include sending an indication to perform a handover from a serving cell to a target cell, the handover to be performed using one or more intra-frequency measurements or handover conditions based at least in part on the center frequency and subcarrier spacing (SCS) for a selected reference SSB of the serving cell being the same as the center frequency and SCS, respectively, for a selected reference SSB of the target cell, or to be performed using one or more inter-frequency measurements or handover conditions based at least in part on the center frequency and SCS, respectively, for a selected reference SSB of the serving cell being different than the center frequency and SCS, respectively, for a selected reference SSB of the target cell (block 820). For example, a network node (e.g., using Figure 12 The sending component 1204 and / or the communication manager 1206 depicted in the figure may send an indication for performing a handover from a serving cell to a target cell, wherein the handover will be performed using one or more intra-frequency measurements or handover conditions based at least in part on the center frequency and subcarrier spacing (SCS) of the selection reference SSB for the serving cell being the same as the center frequency and SCS of the selection reference SSB for the target cell, respectively, or performed using one or more inter-frequency measurements or handover conditions based at least in part on the center frequency and SCS of the selection reference SSB for the serving cell being different from the center frequency and SCS of the selection reference SSB for the target cell, respectively, as described above.

[0151] Process 800 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0152] In a first aspect, one or more reference SSBs for a serving cell include a cell-defining SSB and one or more non-cell-defining SSBs, and one or more reference SSBs for a target cell include a cell-defining SSB and one or more non-cell-defining SSBs.

[0153] In a second aspect, either alone or in combination with the first aspect, the selected reference SSB for the serving cell corresponds to the SSB configured in the serving cell measurement object, the SSB configured in the bandwidth part-specific serving cell measurement object where configured, or the SSB configured in the active bandwidth part of the serving cell.

[0154] In a third aspect, alone or in combination with one or more of the first and second aspects, the selected reference SSB for the target cell corresponds to an SSB configured in the first active bandwidth part of the target cell, an SSB configured in the serving cell measurement object of the target cell, an SSB configured in the bandwidth part-specific serving cell measurement object of the target cell if configured, or an SSB configured in the target cell measurement object of the serving cell.

[0155] In a fourth aspect, alone or in combination with one or more of the first to third aspects, process 800 includes sending priority information for selecting a selection reference SSB for a serving cell from two or more SSBs for a serving cell or for selecting a selection reference SSB for a target cell from two or more SSBs for a target cell.

[0156] In a fifth aspect, sending priority information, alone or in combination with one or more of the first to fourth aspects, includes sending downlink control information, a medium access control message, a radio resource control message, system information or a handover command including priority information.

[0157] although Figure 8 Example blocks of process 800 are shown, but in some aspects, process 800 may include Figure 8 The blocks may include additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in process 800. Additionally or alternatively, two or more blocks of the blocks of process 800 may be executed in parallel.

[0158] Figure 9 is a diagram illustrating an example process 900, performed, for example, by a UE, in accordance with the present disclosure. Example process 900 is an example in which a UE (eg, UE 120) performs operations associated with identifying a reference SSB.

[0159] like Figure 9 As shown, in some aspects, process 900 may include, for radio resource control (RRC) reestablishment, identifying whether a center frequency and a subcarrier spacing (SCS) of a reference synchronization signal block (SSB) for a serving cell are the same as a center frequency and a subcarrier spacing (SCS) of a reference SSB for a neighboring cell, respectively (block 910). For example, a UE (e.g., using Figure 11 The communication manager 1106 depicted in the figure can identify, for radio resource control (RRC) reconstruction, whether the center frequency and subcarrier spacing (SCS) of the reference synchronization signal block (SSB) used for the serving cell are the same as the center frequency and SCS of the reference SSB used for the neighboring cell, respectively, as described above.

[0160] like Figure 9As further shown, in some aspects, process 900 may include initiating RRC re-establishment using one or more intra-frequency measurements based at least in part on a center frequency and SCS for a reference SSB for a serving cell being the same as a center frequency and SCS, respectively, for a reference SSB for a neighboring cell, or initiating RRC re-establishment using one or more inter-frequency measurements based at least in part on a center frequency and SCS for a reference SSB for a serving cell being different than a center frequency and SCS, respectively, for a reference SSB for a neighboring cell (block 920). For example, a UE (e.g., using Figure 11 The communication manager 1106 depicted in the figure may initiate RRC re-establishment using one or more intra-frequency measurements based at least in part on the center frequency and SCS of the reference SSB for the serving cell being the same as the center frequency and SCS of the reference SSB for the neighboring cell, respectively, or initiate RRC re-establishment using one or more inter-frequency measurements based at least in part on the center frequency and SCS of the reference SSB for the serving cell being different from the center frequency and SCS of the reference SSB for the neighboring cell, respectively, as described above.

[0161] Process 900 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0162] In a first aspect, the UE is a reduced capability UE.

[0163] In a second aspect, alone or in combination with the first aspect, the UE is configured with at least two SSBs for a serving cell or at least two SSBs for a neighboring cell.

[0164] In a third aspect, alone or in combination with one or more of the first and second aspects, at least two SSBs for a serving cell include a cell-defining SSB and one or more non-cell-defining SSBs, and at least two SSBs for a neighboring cell include a cell-defining SSB and one or more non-cell-defining SSBs.

[0165] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the reference SSB for the serving cell corresponds to the cell-defining SSB of the serving cell, the SSB configured in the active bandwidth portion of the serving cell, the SSB configured in the serving cell measurement object or the bandwidth portion-specific serving cell measurement object where configured.

[0166] In the fifth aspect, alone or in combination with one or more of the first to fourth aspects, the reference SSB for the neighboring cell corresponds to the cell-defined SSB, the non-cell-defined SSB in one or more non-cell-defined SSBs if configured, or the SSB configured in the measurement object for the neighboring cell.

[0167] In a sixth aspect, alone or in combination with one or more of aspects 1 to 5, process 900 includes receiving priority information for selecting a reference SSB for a serving cell from a plurality of SSBs for a serving cell or for selecting a reference SSB for a neighboring cell from a plurality of SSBs for a neighboring cell.

[0168] In a seventh aspect, either alone or in combination with one or more of aspects one to six, receiving priority information comprises receiving downlink control information, a medium access control message, a radio resource control message, system information or a handover command comprising priority information.

[0169] In an eighth aspect, either alone or in combination with one or more of aspects 1 to 7, process 900 includes selecting a reference SSB for a serving cell from a plurality of SSBs for a serving cell, or selecting a reference SSB for a neighboring cell from a plurality of SSBs for a neighboring cell based at least in part on UE capability information.

[0170] although Figure 9 Example blocks of process 900 are shown, but in some aspects, process 900 may include Figure 9 The blocks may include additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in process 900. Additionally or alternatively, two or more blocks of the blocks of process 900 may be executed in parallel.

[0171] Figure 10 is a diagram illustrating an example process 1000, performed, for example, by a network node, in accordance with the present disclosure. Example process 1000 is an example in which a network node (eg, network node 110) performs operations associated with identifying a reference SSB.

[0172] like Figure 10 As shown, in some aspects, process 1000 may include sending configuration information indicating one or more reference synchronization signal blocks (SSBs) for a serving cell or one or more reference SSBs for a neighboring cell (block 1010). For example, a network node (e.g., using Figure 12 The sending component 1204 and / or the communication manager 1206 depicted in the figure may send configuration information indicating one or more reference synchronization signal blocks (SSBs) for the serving cell or one or more reference SSBs for the neighboring cell, as described above.

[0173] like Figure 10 As further shown, in some aspects, process 1000 may include sending an indication to perform radio resource control (RRC) re-establishment, the RRC re-establishment to be performed using one or more intra-frequency measurements based at least in part on the center frequency and subcarrier spacing (SCS) for the selected reference SSB of the serving cell being the same as the center frequency and SCS, respectively, for the selected reference SSB of the neighboring cell, or to be performed using one or more inter-frequency measurements based at least in part on the center frequency and SCS, respectively, for the selected reference SSB of the serving cell being different from the center frequency and SCS, respectively, for the selected reference SSB of the neighboring cell (block 1020). For example, the network node (e.g., using Figure 12 The sending component 1204 and / or the communication manager 1206 depicted in the figure may send an indication for performing radio resource control (RRC) re-establishment, which RRC re-establishment will be performed using one or more intra-frequency measurements based at least in part on the center frequency and subcarrier spacing (SCS) of the selected reference SSB for the serving cell being the same as the center frequency and SCS of the selected reference SSB for the neighboring cell, respectively, or performed using one or more inter-frequency measurements based at least in part on the center frequency and SCS of the selected reference SSB for the serving cell being different from the center frequency and SCS of the selected reference SSB for the neighboring cell, respectively, as described above.

[0174] Process 1000 may include additional aspects, such as any single aspect or any combination of aspects described below and / or in conjunction with one or more other processes described elsewhere herein.

[0175] In a first aspect, one or more reference SSBs for a serving cell include a cell-defining SSB and one or more non-cell-defining SSBs, and one or more reference SSBs for a neighboring cell include a cell-defining SSB and one or more non-cell-defining SSBs.

[0176] In a second aspect, alone or in combination with the first aspect, the selected reference SSB for the serving cell corresponds to the cell-defining SSB of the serving cell, the SSB configured in the active bandwidth part of the serving cell, the SSB configured in the serving cell measurement object or the bandwidth part-specific serving cell measurement object if configured.

[0177] In a third aspect, alone or in combination with one or more of the first and second aspects, the selected reference SSB for the neighboring cell corresponds to a cell-defined SSB, a non-cell-defined SSB among one or more non-cell-defined SSBs if configured, or an SSB configured in a measurement object for the neighboring cell.

[0178] In a fourth aspect, alone or in combination with one or more of the first to third aspects, process 1000 includes sending priority information for selecting a selection reference SSB for a serving cell from two or more SSBs for a serving cell or for selecting a selection reference SSB for a neighboring cell from two or more SSBs for a neighboring cell.

[0179] In a fifth aspect, sending priority information, alone or in combination with one or more of the first to fourth aspects, includes sending downlink control information, a medium access control message, a radio resource control message, system information or a handover command including priority information.

[0180] although Figure 10 Example blocks of process 1000 are shown, but in some aspects, process 1000 may include Figure 10 1000. In some embodiments, the process 1000 may include additional blocks, fewer blocks, different blocks, or blocks arranged in a different manner than those depicted in FIG. Additionally or alternatively, two or more blocks of the blocks of process 1000 may be executed in parallel.

[0181] Figure 11 1 is a diagram of an example apparatus 1100 for wireless communication according to the present disclosure. Apparatus 1100 may be a UE, or a UE may include apparatus 1100. In some aspects, apparatus 1100 includes a receiving component 1102, a sending component 1104, and / or a communication manager 1106, which may communicate with each other (e.g., via one or more buses and / or one or more other components). In some aspects, communication manager 1106 is a communication manager that is configured to communicate with one another. Figure 1 The described communication manager 140. As shown, the device 1100 can communicate with another device 1108, such as a UE or a network node (such as a CU, DU, RU, or base station), using a receiving component 1102 and a sending component 1104.

[0182] In some aspects, the apparatus 1100 may be configured to perform Figures 5 and 6 Additionally or alternatively, the apparatus 1100 may be configured to perform one or more of the processes described herein, such as Figure 7 The process of 700 Figure 9 In some aspects, Figure 11 The device 1100 and / or one or more components shown may include a combination of Figure 2 Additionally or alternatively, Figure 11 One or more of the components shown may be combined Figure 2In one or more components described herein, the components may be implemented in a manner that is at least partially implemented as software stored in a memory. In addition or alternatively, one or more components in a set of components may be implemented at least in part as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or code that are stored in a non-transitory computer-readable medium and that can be executed by a controller or processor to perform the function or operation of the component.

[0183] The receiving component 1102 may receive communications, such as reference signals, control information, data communications, or a combination thereof, from the device 1108. The receiving component 1102 may provide the received communications to one or more other components of the device 1100. In some aspects, the 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 one or more other components of the device 1100. In some aspects, the receiving component 1102 may include in conjunction with Figure 2 One or more antennas, modems, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof of the described UE.

[0184] The transmitting component 1104 may transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the device 1108. 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 1108. In some aspects, the transmitting component 1104 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to the device 1108. In some aspects, the transmitting component 1104 may include combining Figure 2 One or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the described UE. In some aspects, the transmitting component 1104 can be co-located with the receiving component 1102 in a transceiver.

[0185] The communications manager 1106 can support the operation of the receiving component 1102 and / or the sending component 1104. For example, the communications manager 1106 can receive information associated with configuring the receipt of communications by the receiving component 1102 and / or the sending of communications by the sending component 1104. Additionally or alternatively, the communications manager 1106 can generate and / or provide control information to the receiving component 1102 and / or the sending component 1104 to control the receipt and / or sending of communications.

[0186] The communication manager 1106 may, for a handover between the serving cell and the target cell, identify whether a center frequency and a subcarrier spacing (SCS) of a reference synchronization signal block (SSB) for the serving cell are the same as a center frequency and SCS of a reference SSB for the target cell, respectively. The communication manager 1106 may initiate a handover from the serving cell to the target cell using one or more intra-frequency measurement or handover conditions based at least in part on the center frequency and SCS of the reference SSB for the serving cell being the same as a center frequency and SCS of the reference SSB for the target cell, respectively, or initiate a handover from the serving cell to the target cell using one or more inter-frequency measurement or handover conditions based at least in part on the center frequency and SCS of the reference SSB for the serving cell being different from a center frequency and SCS of the reference SSB for the target cell, respectively.

[0187] The receiving component 1102 can receive priority information for selecting a reference SSB for a serving cell from a plurality of SSBs for a serving cell or for selecting a reference SSB for a target cell from a plurality of SSBs for a target cell.

[0188] The communications manager 1106 may select a reference SSB for the serving cell from a plurality of SSBs for the serving cell, or select a reference SSB for the target cell from a plurality of SSBs for the target cell based at least in part on the UE capability information.

[0189] The communication manager 1106 may, for radio resource control (RRC) reestablishment, identify whether a center frequency and a subcarrier spacing (SCS) of a reference synchronization signal block (SSB) for a serving cell are the same as a center frequency and SCS, respectively, of a reference SSB for a neighboring cell. The communication manager 1106 may initiate RRC reestablishment using one or more intra-frequency measurements based at least in part on the center frequency and SCS of the reference SSB for the serving cell being the same as a center frequency and SCS, respectively, of the reference SSB for the neighboring cell, or initiate RRC reestablishment using one or more inter-frequency measurements based at least in part on the center frequency and SCS of the reference SSB for the serving cell being different from a center frequency and SCS, respectively, of the reference SSB for the neighboring cell.

[0190] The receiving component 1102 may receive priority information for selecting a reference SSB for the serving cell from a plurality of SSBs for the serving cell or for selecting a reference SSB for the neighboring cell from a plurality of SSBs for the neighboring cell. The communication manager 1106 may select the reference SSB for the serving cell from the plurality of SSBs for the serving cell or select the reference SSB for the neighboring cell from the plurality of SSBs for the neighboring cell based at least in part on the UE capability information.

[0191] Figure 11 The number and arrangement of components shown are provided as examples. In practice, there may be Figure 11 The components shown may include additional components, fewer components, different components, or components arranged in a different manner than those shown. Figure 11 Two or more components shown may be implemented in a single component, or Figure 11 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Figure 11 The illustrated set of components (one or more) may be described as being executable by Figure 11 Another group of components is shown performing one or more functions.

[0192] Figure 12 1 is a diagram of an example apparatus 1200 for wireless communication according to the present disclosure. Apparatus 1200 may be a network node, or a network node may include apparatus 1200. In some aspects, apparatus 1200 includes a receiving component 1202, a sending component 1204, and / or a communication manager 1206, which may communicate with each other (e.g., via one or more buses and / or one or more other components). In some aspects, communication manager 1206 is a communication manager that is configured to communicate with one another. Figure 1 The described communication manager 150. As shown, the device 1200 can communicate with another device 1208, such as a UE or a network node (such as a CU, DU, RU, or base station), using a receiving component 1202 and a sending component 1204.

[0193] In some aspects, the apparatus 1200 may be configured to perform Figures 5 and 6 Additionally or alternatively, the apparatus 1200 may be configured to perform one or more of the processes described herein, such as Figure 8 The process of 800 Figure 10 In some aspects, Figure 12 The device 1200 and / or one or more components shown may include a combination of Figure 2 Additionally or alternatively, one or more components of the network node described. Figure 12 One or more of the components shown may be combined Figure 2 In one or more components described herein, the components may be implemented in a manner that is at least partially implemented as software stored in a memory. In addition or alternatively, one or more components in a set of components may be implemented at least in part as software stored in a memory. For example, a component (or a portion of a component) may be implemented as instructions or code that are stored in a non-transitory computer-readable medium and that can be executed by a controller or processor to perform the function or operation of the component.

[0194] The receiving component 1202 may receive communications, such as reference signals, control information, data communications, or a combination thereof, from the device 1208. The receiving component 1202 may provide the received communications to one or more other components of the device 1200. In some aspects, the receiving component 1202 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 device 1200. In some aspects, the receiving component 1202 may include in conjunction with Figure 2 One or more antennas, modems, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof of the described network nodes. In some aspects, the receiving component 1202 and / or the transmitting component 1204 may include or be included in a network interface. The network interface may be configured to obtain and / or output signals for the device 1200 via one or more communication links (such as a backhaul link, a midhaul link, and / or a fronthaul link).

[0195] The transmitting component 1204 may transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the device 1208. In some aspects, one or more other components of the device 1200 may generate communications and may provide the generated communications to the transmitting component 1204 for transmission to the device 1208. In some aspects, the transmitting component 1204 may perform signal processing (such as filtering, amplification, modulation, digital-to-analog conversion, multiplexing, interleaving, mapping, or encoding, etc.) on the generated communications and may transmit the processed signals to the device 1208. In some aspects, the transmitting component 1204 may include combining Figure 2 One or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof of the described network nodes. In some aspects, the transmitting component 1204 can be co-located with the receiving component 1202 in a transceiver.

[0196] The communications manager 1206 can support the operation of the receiving component 1202 and / or the sending component 1204. For example, the communications manager 1206 can receive information associated with configuring the receipt of communications by the receiving component 1202 and / or the sending of communications by the sending component 1204. Additionally or alternatively, the communications manager 1206 can generate and / or provide control information to the receiving component 1202 and / or the sending component 1204 to control the receipt and / or sending of communications.

[0197] The transmitting component 1204 can transmit configuration information indicating one or more reference synchronization signal blocks (SSBs) for the serving cell or one or more reference SSBs for the target cell. The transmitting component 1204 can transmit an indication for performing a handover from the serving cell to the target cell, the handover to be performed using one or more intra-frequency measurement or handover conditions based at least in part on the center frequency and subcarrier spacing (SCS) of the selected reference SSB for the serving cell being the same as the center frequency and SCS of the selected reference SSB for the target cell, respectively, or to be performed using one or more inter-frequency measurement or handover conditions based at least in part on the center frequency and SCS of the selected reference SSB for the serving cell being different from the center frequency and SCS of the selected reference SSB for the target cell, respectively.

[0198] The transmitting component 1204 may transmit priority information for selecting a selection reference SSB for a serving cell from two or more SSBs for a serving cell or for selecting a selection reference SSB for a target cell from two or more SSBs for a target cell.

[0199] The transmitting component 1204 can transmit configuration information indicating one or more reference synchronization signal blocks (SSBs) for a serving cell or one or more reference SSBs for a neighboring cell. The transmitting component 1204 can transmit an indication for performing a radio resource control (RRC) re-establishment, the RRC re-establishment to be performed using one or more intra-frequency measurements based at least in part on a selected reference SSB for the serving cell having a center frequency and a subcarrier spacing (SCS) being the same as a selected reference SSB for a neighboring cell, respectively, or using one or more inter-frequency measurements based at least in part on a selected reference SSB for the serving cell having a center frequency and a subcarrier spacing (SCS) being different than a selected reference SSB for a neighboring cell, respectively.

[0200] The transmitting component 1204 may transmit priority information for selecting a selection reference SSB for a serving cell from two or more SSBs for a serving cell or for selecting a selection reference SSB for a neighboring cell from two or more SSBs for a neighboring cell.

[0201] Figure 12 The number and arrangement of components shown are provided as examples. In practice, there may be Figure 12 The components shown may include additional components, fewer components, different components, or components arranged in a different manner than those shown. Figure 12 Two or more components shown may be implemented in a single component, or Figure 12 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Figure 12The illustrated set of components (one or more) may be described as being executable by Figure 12 Another group of components is shown performing one or more functions.

[0202] The following provides an overview of some aspects of the disclosure:

[0203] Aspect 1: A method for wireless communication performed by a user equipment (UE), the method comprising: for a handover between a serving cell and a target cell, identifying whether the center frequency and subcarrier spacing (SCS) of a reference synchronization signal block (SSB) used for the serving cell are respectively the same as the center frequency and SCS of a reference SSB used for the target cell; and initiating a handover from the serving cell to the target cell using one or more intra-frequency measurement or intra-frequency handover conditions based at least in part on the center frequency and SCS of the reference SSB used for the serving cell being respectively the same as the center frequency and SCS of the reference SSB used for the target cell, or initiating a handover from the serving cell to the target cell using one or more inter-frequency measurement or inter-frequency handover conditions based at least in part on the center frequency and SCS of the reference SSB used for the serving cell being respectively different from the center frequency and SCS of the reference SSB used for the target cell.

[0204] Aspect 2: The method according to aspect 1, wherein the UE is a reduced capability UE.

[0205] Aspect 3: The method according to any one of aspects 1 to 2, wherein the UE is configured with at least two SSBs for the serving cell or at least two SSBs for the target cell.

[0206] Aspect 4: The method according to Aspect 3, wherein the at least two SSBs used for the serving cell include a cell-defining SSB and one or more non-cell-defining SSBs, and the at least two SSBs used for the target cell include a cell-defining SSB and one or more non-cell-defining SSBs.

[0207] Aspect 5: A method according to any one of Aspects 1 to 4, wherein the reference SSB used for the serving cell corresponds to the SSB configured in the serving cell measurement object, the SSB configured in the bandwidth part-specific serving cell measurement object in a configured case, or the SSB configured in the active bandwidth part of the serving cell.

[0208] Aspect 6: A method according to any one of Aspects 1 to 5, wherein the reference SSB for the target cell corresponds to the SSB configured in the first active bandwidth part of the target cell, the SSB configured in the serving cell measurement object of the target cell, the SSB configured in the bandwidth part-specific serving cell measurement object of the target cell if configured, or the SSB configured in the target cell measurement object of the serving cell.

[0209] Aspect 7: According to the method described in any one of Aspects 1 to 6, the method further includes receiving priority information for selecting the reference SSB for the service cell from multiple SSBs for the service cell or for selecting the reference SSB for the target cell from multiple SSBs for the target cell.

[0210] Aspect 8: The method according to aspect 7, wherein receiving the priority information comprises receiving downlink control information, a medium access control message, a radio resource control message, system information, or a handover command including the priority information.

[0211] Aspect 9: According to the method described in any one of Aspects 1 to 8, the method also includes selecting the reference SSB for the serving cell from multiple SSBs for the serving cell, or selecting the reference SSB for the target cell from multiple SSBs for the target cell based at least in part on UE capability information.

[0212] Aspect 10: A method of wireless communication performed by a network node, the method comprising: sending configuration information indicating one or more reference synchronization signal blocks (SSBs) for a serving cell or one or more reference SSBs for a target cell; and sending an indication for performing a handover from the serving cell to the target cell, the handover being performed at least in part based on the center frequency and subcarrier spacing (SCS) of the selected reference SSB for the serving cell being the same as the center frequency and SCS of the selected reference SSB for the target cell, and using one or more intra-frequency measurement or handover conditions, or at least in part based on the center frequency and SCS of the selected reference SSB for the serving cell being different from the center frequency and SCS of the selected reference SSB for the target cell, and using one or more inter-frequency measurement or handover conditions.

[0213] Aspect 11: A method according to Aspect 10, wherein the one or more reference SSBs used for the serving cell include a cell-defining SSB and one or more non-cell-defining SSBs, and the one or more reference SSBs used for the target cell include a cell-defining SSB and one or more non-cell-defining SSBs.

[0214] Aspect 12: A method according to any one of Aspects 10 to 11, wherein the selected reference SSB for the serving cell corresponds to the SSB configured in the serving cell measurement object, the SSB configured in the bandwidth part-specific serving cell measurement object if configured, or the SSB configured in the active bandwidth part of the serving cell.

[0215] Aspect 13: A method according to any one of Aspects 10 to 12, wherein the selected reference SSB for the target cell corresponds to an SSB configured in the first active bandwidth part of the target cell, an SSB configured in the serving cell measurement object of the target cell, an SSB configured in the bandwidth part-specific serving cell measurement object of the target cell if configured, or an SSB configured in the target cell measurement object of the serving cell.

[0216] Aspect 14: According to the method described in any one of Aspects 10 to 13, the method further includes sending priority information for selecting the selection reference SSB for the service cell from two or more SSBs for the service cell or for selecting the selection reference SSB for the target cell from two or more SSBs for the target cell.

[0217] Aspect 15: The method according to aspect 14, wherein sending the priority information comprises sending downlink control information, a medium access control message, a radio resource control message, system information, or a handover command including the priority information.

[0218] Aspect 16: A method of wireless communication performed by a user equipment (UE), the method comprising: for radio resource control (RRC) reconstruction, identifying whether the center frequency and subcarrier spacing (SCS) of a reference synchronization signal block (SSB) for a serving cell are the same as the center frequency and SCS of a reference SSB for a neighboring cell, respectively; and initiating RRC reconstruction using one or more intra-frequency measurements based at least in part on the center frequency and SCS of the reference SSB for the serving cell being the same as the center frequency and SCS of the reference SSB for the neighboring cell, respectively, or initiating RRC reconstruction using one or more inter-frequency measurements based at least in part on the center frequency and SCS of the reference SSB for the serving cell being different from the center frequency and SCS of the reference SSB for the neighboring cell, respectively.

[0219] Aspect 17: The method according to aspect 16, wherein the UE is a reduced capability UE.

[0220] Aspect 18: The method according to any one of aspects 16 to 17, wherein the UE is configured with at least two SSBs for the serving cell or at least two SSBs for the neighboring cell.

[0221] Aspect 19: The method according to Aspect 18, wherein the at least two SSBs used for the serving cell include a cell-defining SSB and one or more non-cell-defining SSBs, and the at least two SSBs used for the neighboring cell include a cell-defining SSB and one or more non-cell-defining SSBs.

[0222] Aspect 20: A method according to any one of Aspects 16 to 19, wherein the reference SSB used for the serving cell corresponds to the cell-defining SSB of the serving cell, the SSB configured in the active bandwidth part of the serving cell, the SSB configured in the serving cell measurement object or the bandwidth part-specific serving cell measurement object if configured.

[0223] Aspect 21: A method according to any one of Aspects 16 to 20, wherein the reference SSB for the neighboring cell corresponds to a cell-defined SSB, a non-cell-defined SSB among one or more non-cell-defined SSBs if configured, or an SSB configured in the measurement object for the neighboring cell.

[0224] Aspect 22: According to any one of aspects 16 to 21, the method also includes receiving priority information for selecting the reference SSB for the serving cell from multiple SSBs for the serving cell or for selecting the reference SSB for the neighboring cell from multiple SSBs for the neighboring cell.

[0225] Aspect 23: The method according to aspect 22, wherein receiving the priority information comprises receiving downlink control information, a medium access control message, a radio resource control message, system information, or a handover command including the priority information.

[0226] Aspect 24: According to any one of Aspects 16 to 23, the method also includes selecting the reference SSB for the serving cell from multiple SSBs for the serving cell, or selecting the reference SSB for the neighboring cell from multiple SSBs for the neighboring cell based at least in part on UE capability information.

[0227] Aspect 25: A method of wireless communication performed by a network node, the method comprising: sending configuration information indicating one or more reference synchronization signal blocks (SSBs) for a serving cell or one or more reference SSBs for a neighboring cell; and sending an indication for performing radio resource control (RRC) reconstruction, the RRC reconstruction being performed using one or more intra-frequency measurements based at least in part on the center frequency and subcarrier spacing (SCS) of the selected reference SSB for the serving cell being the same as the center frequency and SCS of the selected reference SSB for the neighboring cell, or being performed using one or more inter-frequency measurements based at least in part on the center frequency and SCS of the selected reference SSB for the serving cell being different from the center frequency and SCS of the selected reference SSB for the neighboring cell.

[0228] Aspect 26: A method according to Aspect 25, wherein the one or more reference SSBs used for the serving cell include a cell-defining SSB and one or more non-cell-defining SSBs, and the one or more reference SSBs used for the neighboring cell include a cell-defining SSB and one or more non-cell-defining SSBs.

[0229] Aspect 27: A method according to any one of Aspects 25 to 26, wherein the selected reference SSB for the serving cell corresponds to the cell-defining SSB of the serving cell, the SSB configured in the active bandwidth part of the serving cell, the SSB configured in the serving cell measurement object or the bandwidth part-specific serving cell measurement object if configured.

[0230] Aspect 28: A method according to any one of Aspects 25 to 27, wherein the selected reference SSB for the neighboring cell corresponds to a cell-defined SSB, a non-cell-defined SSB among one or more non-cell-defined SSBs if configured, or an SSB configured in the measurement object for the neighboring cell.

[0231] Aspect 29: According to the method described in any one of Aspects 25 to 28, the method further includes sending priority information for selecting the selection reference SSB for the service cell from two or more SSBs for the service cell or for selecting the selection reference SSB for the neighboring cell from two or more SSBs for the neighboring cell.

[0232] Aspect 30: The method according to aspect 29, wherein sending the priority information comprises sending downlink control information, a medium access control message, a radio resource control message, system information, or a handover command including the priority information.

[0233] Aspect 31: 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 one or more of the methods described in Aspects 1 to 30.

[0234] Aspect 32: A device for wireless communication, the device comprising a memory and one or more processors coupled to the memory, the memory comprising instructions executable by the one or more processors to cause the device to perform the method according to one or more of aspects 1 to 30.

[0235] Aspect 33: 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 30.

[0236] Aspect 34: 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 30.

[0237] Aspect 35: 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 30.

[0238] Aspect 36: A non-transitory computer-readable medium storing an instruction set for wireless communication, the instruction set comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform one or more of the methods described in aspects 1 to 30.

[0239] 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 are possible in light of the above disclosure or may be acquired from practice of these aspects.

[0240] As used herein, the term "component" is intended to be broadly interpreted as hardware and / or a combination of hardware and software. Software should be broadly interpreted as meaning instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software modules, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, processes, and / or functions and other examples, whether described in software, firmware, middleware, microcode, hardware description language or other terms. As used herein, a processor is implemented in hardware and / or in a combination of hardware and software. It will be apparent that the systems and / or methods described herein can be implemented by different forms of hardware and / or a combination of hardware and software. The actual dedicated control hardware or software code used to implement these systems and / or methods does not limit various aspects. Therefore, the operation and performance of these systems and / or methods are described herein without reference to specific software codes. It should be understood that the software and hardware used to implement these systems and / or methods can be designed at least in part based on the description herein.

[0241] As used herein, "satisfying a threshold" may mean that a value is 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., depending on the context.

[0242] 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 various aspects. Many of these features can be combined in a manner not specifically described in the claims and / or not disclosed in the specification. The disclosure of various aspects includes each dependent claim combined with each other claim in the claim set. As used herein, a phrase referring to "at least one of" a list of items refers to any combination of these items (which includes a single member). As an example, "at least one of a, b, or c" is intended to encompass a, b, c, a+b, a+c, b+c, and a+b+c, as well as any combination of 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 arrangement of a, b, and c).

[0243] Any element, action or instruction used herein should not be interpreted as key or necessary, unless explicitly described as such. In addition, as used herein, the articles "one" and "a kind of" are intended to include one or more projects and can be used interchangeably with "one or more". In addition, as used herein, the article "said" is intended to include one or more projects connected with the article "said", and can be used interchangeably with "one or more". In addition, as used herein, the terms "group" and "cluster" are intended to include one or more projects and can be used interchangeably with "one or more". If only want to refer to a project, then use the phrase "only one" or similar terms. In addition, as used herein, the terms "have", "have", "have" etc. are intended to be open terms, which do not limit the elements they modify (for example, "an element with" A can also have B). In addition, the phrase "based on" is intended to represent "at least partially based on", unless explicitly stated otherwise. Furthermore, as used herein, the term "or" when used in a series is intended to be open-ended and used interchangeably with "and / or" unless explicitly stated otherwise (e.g., if used in conjunction with "either" or "only one of").

Claims

1. A user equipment (UE) for wireless communication, the user equipment (UE) comprising: one or more memories; and one or more processors coupled to the one or more memories, the one or more memories comprising instructions executable by the one or more processors to cause the UE to: For a handover between a serving cell and a target cell, identifying whether the center frequency and subcarrier spacing (SCS) of a reference synchronization signal block (SSB) used for the serving cell are the same as the center frequency and SCS of a reference SSB used for the target cell, respectively; as well as At least partially based on the center frequency and SCS of the reference SSB used for the serving cell being the same as the center frequency and SCS of the reference SSB used for the target cell, one or more intra-frequency measurement or intra-frequency handover conditions are used to initiate handover from the serving cell to the target cell, or at least partially based on the center frequency and SCS of the reference SSB used for the serving cell being different from the center frequency and SCS of the reference SSB used for the target cell, one or more inter-frequency measurement or inter-frequency handover conditions are used to initiate handover from the serving cell to the target cell. The UE according to claim 1 , wherein the UE is a reduced capability UE.

3. The UE of claim 1, wherein the UE is configured with at least two SSBs for the serving cell or at least two SSBs for the target cell.

4. The UE according to claim 3, wherein the at least two SSBs for the serving cell include a cell-defining SSB and one or more non-cell-defining SSBs, and the at least two SSBs for the target cell include a cell-defining SSB and one or more non-cell-defining SSBs.

5. The UE of claim 1 , wherein the reference SSB for the serving cell corresponds to an SSB configured in a serving cell measurement object, an SSB configured in a bandwidth part-specific serving cell measurement object if configured, or an SSB configured in an active bandwidth part of the serving cell.

6. The UE of claim 1 , wherein the reference SSB for the target cell corresponds to an SSB configured in a first active bandwidth part of the target cell, an SSB configured in a serving cell measurement object of the target cell, an SSB configured in a bandwidth part-specific serving cell measurement object of the target cell if configured, or an SSB configured in a target cell measurement object of the serving cell.

7. The UE according to claim 1, wherein the one or more memories further include instructions executable by the one or more processors to enable the UE to perform the following operations: receiving priority information for selecting the reference SSB for the serving cell from a plurality of SSBs for the serving cell or for selecting the reference SSB for the target cell from a plurality of SSBs for the target cell.

8. The UE of claim 7, wherein the instructions executable to cause the UE to receive the priority information are executable to cause the UE to receive downlink control information, a medium access control message, a radio resource control message, system information, or a handover command including the priority information.

9. The UE of claim 1 , wherein the one or more memories further comprise instructions executable by the one or more processors to cause the UE to: select the reference SSB for the serving cell from a plurality of SSBs for the serving cell based at least in part on UE capability information, or select the reference SSB for the target cell from a plurality of SSBs for the target cell.

10. A network node for wireless communication, the network node comprising: one or more memories; and one or more processors coupled to the one or more memories, the one or more memories comprising instructions executable by the one or more processors to cause the network node to: Sending configuration information indicating one or more reference synchronization signal blocks (SSBs) for a serving cell or one or more reference SSBs for a target cell; as well as An indication is sent for performing a handover from the serving cell to the target cell, wherein the handover is performed using one or more intra-frequency measurements or intra-frequency handover conditions, based at least in part on the center frequency and subcarrier spacing (SCS) of the selected reference SSB for the serving cell being the same as the center frequency and SCS of the selected reference SSB for the target cell, respectively, or is performed using one or more inter-frequency measurements or inter-frequency handover conditions, based at least in part on the center frequency and SCS of the selected reference SSB for the serving cell being different from the center frequency and SCS of the selected reference SSB for the target cell, respectively.

11. The network node of claim 10, wherein the one or more reference SSBs for the serving cell include a cell-defining SSB and one or more non-cell-defining SSBs, and the one or more reference SSBs for the target cell include a cell-defining SSB and one or more non-cell-defining SSBs.

12. The network node of claim 10, wherein the selected reference SSB for the serving cell corresponds to an SSB configured in a serving cell measurement object, an SSB configured in a bandwidth part-specific serving cell measurement object if configured, or an SSB configured in an active bandwidth part of the serving cell.

13. The network node of claim 10 , wherein the selected reference SSB for the target cell corresponds to an SSB configured in a first active bandwidth part of the target cell, an SSB configured in a serving cell measurement object of the target cell, an SSB configured in a bandwidth part-specific serving cell measurement object of the target cell if configured, or an SSB configured in a target cell measurement object of the serving cell.

14. The network node according to claim 10, wherein the one or more memories further include instructions executable by the one or more processors to enable the network node to perform the following operations: sending priority information for selecting the selection reference SSB for the serving cell from two or more SSBs for the serving cell or for selecting the selection reference SSB for the target cell from two or more SSBs for the target cell.

15. The network node of claim 14, wherein the instructions executable to cause the network node to send the priority information are executable to cause the network node to send downlink control information, a medium access control message, a radio resource control message, system information, or a handover command including the priority information.

16. A UE for wireless communication, the UE comprising: one or more memories; and one or more processors coupled to the one or more memories, the one or more memories comprising instructions executable by the one or more processors to cause the UE to: For radio resource control (RRC) re-establishment, identifying whether the center frequency and subcarrier spacing (SCS) of the reference synchronization signal block (SSB) for the serving cell are the same as the center frequency and SCS of the reference SSB for the neighboring cell, respectively; as well as RRC re-establishment is initiated using one or more intra-frequency measurements based at least in part on the center frequency and SCS of the reference SSB used for the serving cell being the same as the center frequency and SCS of the reference SSB used for the neighboring cell, or RRC re-establishment is initiated using one or more inter-frequency measurements based at least in part on the center frequency and SCS of the reference SSB used for the serving cell being different from the center frequency and SCS of the reference SSB used for the neighboring cell. The UE according to claim 16 , wherein the UE is a reduced capability UE.

18. The UE of claim 16, wherein the UE is configured with at least two SSBs for the serving cell or at least two SSBs for the neighboring cell.

19. The UE of claim 18, wherein the at least two SSBs for the serving cell include a cell-defining SSB and one or more non-cell-defining SSBs, and the at least two SSBs for the neighboring cell include a cell-defining SSB and one or more non-cell-defining SSBs.

20. The UE of claim 16, wherein the reference SSB for the serving cell corresponds to a cell-defining SSB of the serving cell, an SSB configured in an active bandwidth part of the serving cell, an SSB configured in a serving cell measurement object, or a bandwidth part-specific serving cell measurement object if configured.

21. The UE of claim 16, wherein the reference SSB for the neighboring cell corresponds to a cell-defining SSB, a non-cell-defining SSB among one or more non-cell-defining SSBs if configured, or an SSB configured in a measurement object for the neighboring cell.

22. The UE according to claim 16, wherein the one or more memories further include instructions executable by the one or more processors to enable the UE to perform the following operations: receiving priority information for selecting the reference SSB for the serving cell from a plurality of SSBs for the serving cell or for selecting the reference SSB for the neighboring cell from a plurality of SSBs for the neighboring cell.

23. The UE of claim 22, wherein the instructions executable to cause the UE to receive the priority information are executable to cause the UE to receive downlink control information, a medium access control message, a radio resource control message, system information, or a handover command including the priority information.

24. The UE of claim 16, wherein the one or more memories further comprise instructions executable by the one or more processors to cause the UE to: select the reference SSB for the serving cell from a plurality of SSBs for the serving cell based at least in part on UE capability information, or select the reference SSB for the neighboring cell from a plurality of SSBs for the neighboring cell.

25. A network node for wireless communication, the network node comprising: one or more memories; and one or more processors coupled to the one or more memories, the one or more memories comprising instructions executable by the one or more processors to cause the network node to: Sending configuration information indicating one or more reference synchronization signal blocks (SSBs) for a serving cell or one or more reference SSBs for a neighboring cell; as well as Send an indication for performing radio resource control (RRC) re-establishment, wherein the RRC re-establishment will be performed using one or more intra-frequency measurements based at least in part on the center frequency and subcarrier spacing (SCS) of the selected reference SSB for the serving cell being the same as the center frequency and SCS of the selected reference SSB for the neighboring cell, respectively, or performed using one or more inter-frequency measurements based at least in part on the center frequency and SCS of the selected reference SSB for the serving cell being different from the center frequency and SCS of the selected reference SSB for the neighboring cell, respectively.

26. The network node of claim 25, wherein the one or more reference SSBs for the serving cell include a cell-defining SSB and one or more non-cell-defining SSBs, and the one or more reference SSBs for the neighboring cell include a cell-defining SSB and one or more non-cell-defining SSBs.

27. The network node of claim 25, wherein the selected reference SSB for the serving cell corresponds to a cell-defining SSB of the serving cell, an SSB configured in an active bandwidth portion of the serving cell, an SSB configured in a serving cell measurement object, or a bandwidth portion specific serving cell measurement object if configured.

28. The network node of claim 25, wherein the selected reference SSB for the neighboring cell corresponds to a cell-defining SSB, a non-cell-defining SSB among one or more non-cell-defining SSBs if configured, or an SSB configured in a measurement object for the neighboring cell.

29. The network node according to claim 25, wherein the one or more memories further include instructions executable by the one or more processors to enable the network node to perform the following operations: sending priority information for selecting the selection reference SSB for the serving cell from two or more SSBs for the serving cell or for selecting the selection reference SSB for the neighboring cell from two or more SSBs for the neighboring cell.

30. The network node of claim 29, wherein the instructions executable to cause the network node to send the priority information are executable to cause the network node to send downlink control information, a medium access control message, a radio resource control message, system information, or a handover command including the priority information.

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