Incremental configuration for layer 1 / layer 2 triggered mobility

Abstract

Various aspects of the present disclosure generally relate to wireless communications. In some aspects, a user equipment (UE) may receive a reference layer 1 / layer 2 triggered mobility (LTM) configuration indicating one or more reference special cell (SpCell) configurations and zero or more reference secondary cell (SCell) configurations. The UE may receive one or more candidate cell group configurations, each of the one or more candidate cell group configurations indicating one or more delta configurations relative to at least one of the one or more reference SpCell configurations or the zero or more reference SCell configurations. The UE may perform an LTM procedure associated with a selected one of the one or more candidate cell group configurations. Numerous other aspects are described.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This patent application claims priority to U.S. Provisional Patent Application No. 63 / 485,166, filed on February 15, 2023, entitled “DELTA CONFIGURATION FOR LAYER 1 / LAYER 2 TRIGGERED MOBILITY,” and U.S. Non-Provisional Patent Application No. 18 / 414,877, filed on January 17, 2024, entitled “DELTA CONFIGURATION FOR LAYER 1 / LAYER 2 TRIGGERED MOBILITY,” which are hereby expressly incorporated herein by reference. Technical Field

[0003] Aspects of the present disclosure relate generally to wireless communications and to techniques and apparatus for incremental configuration applicable to layer 1 / layer 2 triggered 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 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), time division multiple access (TDMA), frequency division multiple access (FDMA), orthogonal frequency division multiple access (OFDMA), single-carrier frequency division multiple access (SC-FDMA), time division synchronous code division multiple access (TD-SCDMA), 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. A UE may communicate with a network node via downlink and uplink communications. A "downlink" (or "DL") refers to the communication link from a network node to a UE, and an "uplink" (or "UL") refers to the communication link from a UE to a 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] These multiple access technologies have been adopted in various telecommunications standards to provide a common protocol that enables different UEs to communicate at a city, national, regional, and / or global level. New Radio (NR), also known 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 spectral efficiency, reducing costs, improving services, leveraging new spectrum, and integrating better with other open standards 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. Furthermore, it supports beamforming, multiple-input, multiple-output (MIMO) antenna technology, and carrier aggregation. As demand for mobile broadband access continues to increase, further improvements to LTE, NR, and other radio access technologies remain essential. Summary of the Invention

[0007] Some aspects described herein relate to a method of wireless communication performed by a user equipment (UE). The method may include receiving a reference layer 1 / layer 2 triggered mobility (LTM) configuration indicating one or more reference special cell (SpCell) configurations and zero or more reference secondary cell (SCell) configurations. The method may include receiving one or more candidate cell group configurations, each of the one or more candidate cell group configurations indicating one or more delta configurations relative to at least one of the one or more reference SpCell configurations or the zero or more reference SCell configurations. The method may include performing an LTM process associated with a selected candidate cell group configuration from the one or more candidate cell group configurations.

[0008] Some aspects described herein relate to a method of wireless communication performed by a network node. The method may include sending a reference LTM configuration to a UE that indicates one or more reference SpCell configurations and zero or more reference SCell configurations. The method may include sending one or more candidate cell group configurations to the UE, each of the one or more candidate cell group configurations indicating one or more delta configurations relative to at least one of the one or more reference SpCell configurations or the zero or more reference SCell configurations. The method may include triggering, at the UE, an LTM process associated with a selected candidate cell group configuration from the one or more candidate cell group configurations.

[0009] Some aspects described herein relate to a method of wireless communication performed by a first network node. The method may include receiving an indication of a reference LTM configuration from a second network node. The method may include identifying one or more candidate cell configurations associated with one or more candidate cells for an LTM process based at least in part on the reference LTM configuration. The method may include sending an indication of the one or more candidate cell configurations to the second network node.

[0010] Some aspects described herein relate to a method of wireless communication performed by a first network node. The method may include receiving, from a second network node, an indication of one or more candidate cell configurations associated with one or more candidate cells for an LTM process. The method may include identifying, based at least in part on the one or more candidate cell configurations and a reference LTM configuration, one or more delta configurations for the one or more candidate cells relative to the reference LTM configuration. The method may include sending an indication of the one or more delta configurations to a UE.

[0011] Some aspects described herein relate to a UE for wireless communication. The UE may include: a memory; and one or more processors coupled to the memory. The one or more processors may be configured to receive a reference LTM configuration indicating one or more reference SpCell configurations and zero or more reference SCell configurations. The one or more processors may be configured to receive one or more candidate cell group configurations, each of the one or more candidate cell group configurations indicating one or more incremental configurations relative to at least one of the one or more reference SpCell configurations or the zero or more reference SCell configurations. The one or more processors may be configured to perform an LTM process associated with a selected candidate cell group configuration from the one or more candidate cell group configurations.

[0012] Some aspects described herein relate to a network node for wireless communication. The network node may include: a memory; and one or more processors coupled to the memory. The one or more processors may be configured to send a reference LTM configuration indicating one or more reference SpCell configurations and zero or more reference SCell configurations to a UE. The one or more processors may be configured to send one or more candidate cell group configurations to the UE, each of the one or more candidate cell group configurations indicating one or more incremental configurations relative to at least one of the one or more reference SpCell configurations or the zero or more reference SCell configurations. The one or more processors may be configured to trigger, at the UE, an LTM process associated with a selected candidate cell group configuration from the one or more candidate cell group configurations.

[0013] Some aspects described herein relate to a first network node for wireless communication. The first network node may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to receive an indication of a reference LTM configuration from a second network node. The one or more processors may be configured to identify one or more candidate cell configurations associated with one or more candidate cells for an LTM process based at least in part on the reference LTM configuration. The one or more processors may be configured to send an indication of the one or more candidate cell configurations to the second network node.

[0014] Some aspects described herein relate to a first network node for wireless communication. The first network node may include a memory and one or more processors coupled to the memory. The one or more processors may be configured to receive, from a second network node, an indication of one or more candidate cell configurations associated with one or more candidate cells for an LTM process. The one or more processors may be configured to identify, based at least in part on the one or more candidate cell configurations and a reference LTM configuration, one or more delta configurations for the one or more candidate cells relative to the reference LTM configuration. The one or more processors may be configured to send an indication of the one or more delta configurations to a UE.

[0015] Some aspects described herein relate to a non-transitory computer-readable medium storing an instruction set for wireless communication by a UE. The instruction set, when executed by one or more processors of the UE, may cause the UE to receive a reference LTM configuration indicating one or more reference SpCell configurations and zero or more reference SCell configurations. The instruction set, when executed by one or more processors of the UE, may cause the UE to receive one or more candidate cell group configurations, each of the one or more candidate cell group configurations indicating one or more incremental configurations relative to at least one of the one or more reference SpCell configurations or the zero or more reference SCell configurations. The instruction set, when executed by one or more processors of the UE, may cause the UE to perform an LTM process associated with a selected candidate cell group configuration from the one or more candidate cell group configurations.

[0016] Some aspects described herein relate to a non-transitory computer-readable medium storing an instruction set for wireless communication by a network node. The instruction set, when executed by one or more processors of the network node, may cause the network node to send a reference LTM configuration indicating one or more reference SpCell configurations and zero or more reference SCell configurations to a UE. The instruction set, when executed by one or more processors of the network node, may cause the network node to send one or more candidate cell group configurations to the UE, each of the one or more candidate cell group configurations indicating one or more incremental configurations relative to at least one of the one or more reference SpCell configurations or the zero or more reference SCell configurations. The instruction set, when executed by one or more processors of the network node, may cause the network node to trigger an LTM process associated with a selected candidate cell group configuration from the one or more candidate cell group configurations at the UE.

[0017] Some aspects described herein relate to a non-transitory computer-readable medium storing an instruction set for wireless communication by a first network node. The instruction set, when executed by one or more processors of the first network node, may cause the first network node to receive an indication of a reference LTM configuration from a second network node. The instruction set, when executed by the one or more processors of the first network node, may cause the first network node to identify one or more candidate cell configurations associated with one or more candidate cells for an LTM process based at least in part on the reference LTM configuration. The instruction set, when executed by the one or more processors of the first network node, may cause the first network node to send an indication of the one or more candidate cell configurations to the second network node.

[0018] Some aspects described herein relate to a non-transitory computer-readable medium storing a set of instructions for wireless communication by a first network node. The set of instructions, when executed by one or more processors of the first network node, may cause the first network node to receive, from a second network node, an indication of one or more candidate cell configurations associated with one or more candidate cells for an LTM process. The set of instructions, when executed by the one or more processors of the first network node, may cause the first network node to identify, based at least in part on the one or more candidate cell configurations and a reference LTM configuration, one or more delta configurations for the one or more candidate cells relative to the reference LTM configuration. The set of instructions, when executed by the one or more processors of the first network node, may cause the first network node to send an indication of the one or more delta configurations to a UE.

[0019] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for receiving a reference LTM configuration indicating one or more reference SpCell configurations and zero or more reference SCell configurations. The apparatus may include means for receiving one or more candidate cell group configurations, each of the one or more candidate cell group configurations indicating one or more delta configurations relative to at least one of the one or more reference SpCell configurations or the zero or more reference SCell configurations. The apparatus may include means for performing an LTM process associated with a selected candidate cell group configuration from the one or more candidate cell group configurations.

[0020] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for sending a reference LTM configuration to a UE that indicates one or more reference SpCell configurations and zero or more reference SCell configurations. The apparatus may include means for sending one or more candidate cell group configurations to the UE, each of the one or more candidate cell group configurations indicating one or more delta configurations relative to at least one of the one or more reference SpCell configurations or the zero or more reference SCell configurations. The apparatus may include means for triggering, at the UE, an LTM process associated with a selected candidate cell group configuration from the one or more candidate cell group configurations.

[0021] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for receiving an indication of a reference LTM configuration from a network node. The apparatus may include means for identifying one or more candidate cell configurations associated with one or more candidate cells for an LTM process based at least in part on the reference LTM configuration. The apparatus may include means for sending an indication of the one or more candidate cell configurations to the network node.

[0022] Some aspects described herein relate to an apparatus for wireless communication. The apparatus may include means for receiving, from a network node, an indication of one or more candidate cell configurations associated with one or more candidate cells for an LTM process. The apparatus may include means for identifying, based at least in part on the one or more candidate cell configurations and a reference LTM configuration, one or more delta configurations for the one or more candidate cells relative to the reference LTM configuration. The apparatus may include means for sending an indication of the one or more delta configurations to a UE.

[0023] Some aspects described herein relate to a first network node for wireless communication. The first network node may include one or more memories and one or more processors coupled to the one or more memories. The one or more processors may be configured to send an indication of a reference LTM configuration to a second network node. The one or more processors may be configured to receive, from the second network node, an indication of one or more candidate cell configurations associated with one or more candidate cells for an LTM process, wherein the one or more candidate cell configurations are based at least in part on the reference LTM configuration.

[0024] The various aspects collectively 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 the accompanying drawings and description, and as illustrated in the accompanying drawings and description.

[0025] The features and technical advantages of the examples according to the present disclosure have been outlined quite broadly above so that the following detailed description may be better understood. Additional features and advantages will be described below. The concepts and specific examples disclosed may be readily utilized 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.

[0026] While various aspects are described in this disclosure through illustration of certain examples, those skilled in the art will appreciate that such aspects can be implemented in many different arrangements and scenarios. The techniques described herein can be implemented using different platform types, devices, systems, shapes, sizes, and / or packaging arrangements. For example, some aspects can be implemented via integrated chip implementations or other non-module-based devices (e.g., end-user devices, vehicles, communications devices, computing devices, industrial equipment, retail / shopping devices, medical devices, 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. Devices incorporating the described aspects and features may include additional components and features for implementing and practicing the claimed and described aspects. For example, the transmission and reception of wireless signals may include one or more components for analog and digital purposes (e.g., hardware components including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders, and / or summers). The various aspects described herein are intended to be practiced in a wide variety of devices, components, systems, distributed arrangements, and / or end-user devices of various sizes, shapes, and configurations. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] In order that the above-described 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.

[0028] Figure 1 is a diagram illustrating an example of a wireless network according to the present disclosure.

[0029] 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.

[0030] Figure 3 is a diagram illustrating an example decomposed base station architecture according to the present disclosure.

[0031] Figure 4 is a diagram illustrating an example of a Layer 1 / Layer 2 Triggered Mobility (LTM) procedure according to the present disclosure.

[0032] Figure 5 is a diagram illustrating an example of radio resource control modeling associated with an LTM process according to the present disclosure.

[0033] Figure 6is a diagram illustrating an example of sequential LTM execution according to the present disclosure.

[0034] Figure 7 is a diagram of an example associated with incremental configuration for an LTM according to the present disclosure.

[0035] Figures 8A to 8B is a diagram of an example associated with incremental configuration for an LTM according to the present disclosure.

[0036] Figure 9 is a diagram illustrating an example process performed, for example, by a UE according to the present disclosure.

[0037] Figure 10 is a diagram illustrating an example process, for example, performed by a network node, according to the present disclosure.

[0038] Figure 11 is a diagram illustrating an example process performed, for example, by a first network node according to the present disclosure.

[0039] Figure 12 is a diagram illustrating an example process performed, for example, by a first network node according to the present disclosure.

[0040] Figure 13 is a diagram illustrating an example process performed, for example, by a first network node according to the present disclosure.

[0041] Figure 14 is a diagram of an example apparatus for wireless communications according to the present disclosure.

[0042] Figure 15 is a diagram of an example apparatus for wireless communications according to the present disclosure. DETAILED DESCRIPTION

[0043] In some wireless networks, user equipment (UE) can be configured to perform Layer 1 (L1) / Layer 2 (L2) cell changes, sometimes referred to as L1 / L2 triggered mobility (LTM). In some cases, the UE can be configured with multiple candidate cells for the LTM procedure, allowing the UE to perform multiple sequential cell changes without requiring radio resource control (RRC) reconfiguration. For example, the UE can be configured with multiple candidate cell group configurations, where each cell group configuration configures one or more cells (e.g., a primary cell or special cell (SpCell) and optionally one or more secondary cells (SCells)). In response to receiving a cell handover command from a network node, the UE can perform an LTM procedure to the cell and / or cell group indicated by the cell handover command by applying the corresponding candidate LTM configuration. After establishing a connection with a candidate cell and / or cell group, the UE can receive a subsequent cell handover command and, accordingly, can perform a subsequent LTM procedure to another cell and / or cell group indicated by the subsequent cell handover command by applying the corresponding candidate LTM configuration. The UE may continue in this manner and thus perform multiple sequential L1 / L2 cell handovers requiring RRC reconfiguration.

[0044] In some examples, to reduce signaling overhead and otherwise conserve power, computation, and network resources, various LTM configurations may be indicated to the UE as incremental configurations. An incremental configuration may refer to a configuration that indicates differences from a base or reference configuration (such as a source configuration for a serving cell group). In such examples, performing a sequential LTM procedure without an intervening RRC reconfiguration may result in communication errors or even radio link failure (RLF). This is because the source configuration (e.g., the configuration associated with the UE's current serving cell group) changes with each successive cell handover, and therefore applying an incremental configuration (which may be configured relative to a configuration different from the current source configuration) may result in the UE being incorrectly configured. Consequently, the UE and network node may be incorrectly configured and, as a result, may experience communication errors or RLF, requiring higher power, computation, and network resource consumption to correct the communication errors and / or reestablish the RRC connection with the cell group.

[0045] Some techniques and apparatus described herein support the use of incremental configurations relative to a dedicated and / or separate reference configuration, thereby reducing communication errors and / or reducing the risk of RLF associated with LTM handovers. In some aspects, a UE may be configured with a reference LTM configuration (e.g., a separate LTM configuration maintained by the UE for reference purposes) that indicates one or more reference SpCell configurations and / or zero or more SCell configurations. The UE may also be configured with one or more candidate cell configurations that indicate one or more incremental configurations relative to the one or more SpCell configurations and the zero or more SCell configurations. In response to receiving a cell handover command, the UE may apply the candidate cell configuration based at least in part on the reference LTM configuration. In this regard, the candidate cell configuration may not depend on the source cell configuration, enabling the UE to perform a sequential LTM procedure without intermediate RRC reconfiguration. Consequently, the UE and network node may experience reduced communication errors or a reduced risk of RLF following the LTM procedure, thereby reducing the power, computational, and network resource consumption that would otherwise be required to correct communication errors and / or reestablish an RRC connection with a group of cells.

[0046] 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 the scope of protection of the present disclosure will be fully conveyed 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 method that is practiced using other structures, functionality, or structure and functionality 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.

[0047] Several aspects of telecommunications systems will now be presented with reference to various devices and techniques. These devices and techniques are 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.

[0048] 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 RATs, 4G RATs, and / or post-5G (e.g., 6G) RATs.

[0049] Figure 1 1 is a diagram illustrating an example of a wireless network 100 according to the present disclosure. 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. 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), one or more UEs 120 (illustrated as UE 120a, UE 120b, UE 120c, UE 120d, and UE 120e), and / or other entities. Network node 110 is a network node that communicates with UE 120. As shown in the figure, 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)).

[0050] In some examples, network node 110 is or includes a network node (such as a 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 with a core network via a backhaul link. In some examples, network node 110 (such as a converged network node 110 or a disaggregated network node 110) may include multiple network nodes, such as one or more RUs, one or more CUs, and / or one or more DUs. 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, a 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.

[0051] 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., several kilometers in radius) 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).

[0052] In some aspects, the term "base station" or "network node" may refer to a converged base station, a disaggregated base station, an integrated access and backhaul (IAB) node, a relay node, or one or more components thereof. For example, in some aspects, a "base station" or "network node" may refer to a CU, DU, RU, a near real-time (near-RT) RAN intelligent controller (RIC), 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 a number of different devices (which may be located in the same or different geographic locations) may be configured to perform at least a portion of a function, or to perform at least a portion of the function repeatedly, 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.

[0053] 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., network node 110 or UE 120) and transmit transmissions of data to a downstream node (e.g., UE 120 or network node 110). A relay station may be a UE 120 that can relay transmissions for other UEs 120. Figure 1 In the example shown, a network node 110d (e.g., a relay network node) may communicate with a network node 110a (e.g., a macro network node) and a UE 120d to facilitate communications between the network node 110a and the UE 120d. A network node 110 that relays communications may be referred to as a relay station, a relay base station, a relay network node, a relay node, a relay, etc.

[0054] 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).

[0055] 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.

[0056] UEs 120 may be dispersed throughout wireless network 100, and each UE 120 may be stationary or mobile. UEs 120 may include, for example, access terminals, terminals, mobile stations, and / or subscriber units. UEs 120 may be cellular phones (e.g., smartphones), personal digital assistants (PDAs), wireless modems, wireless communication devices, handheld devices, laptop computers, cordless phones, wireless local loop (WLL) stations, tablet computers, cameras, gaming devices, netbooks, smartbooks, ultrabooks, medical devices, biometric devices, wearable devices (e.g., smart watches, smart clothing, smart glasses, smart wristbands, smart jewelry (e.g., smart rings or smart bracelets)), entertainment devices (e.g., music devices, video devices, and / or satellite radios), vehicle components or sensors, smart meters / sensors, industrial manufacturing equipment, global positioning system equipment, UE functionality of a network node, and / or any other suitable device configured to communicate via a wireless or wired medium.

[0057] 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, which may communicate with a network node, another device (e.g., a remote device), or some other entity. Some UEs 120 may be considered Internet of Things (IoT) devices and / or may be implemented as NB-IoT (Narrowband IoT) devices. Some UEs 120 may be considered customer premises equipment. UE 120 may be included within a housing that houses components of 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.

[0058] 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.

[0059] In some examples, two or more UEs 120 (e.g., shown as UE 120a and UE 120e) can communicate directly (e.g., without using network node 110 as an intermediary to communicate with each other) using one or more sidelink channels. 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.

[0060] Devices in 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, devices in wireless network 100 can communicate using one or more operating frequency bands. In 5G NR, two initial operating frequency bands have been identified as frequency ranges designated FR1 (410 MHz to 7.125 GHz) and FR2 (24.25 GHz to 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 FR2, which is often (interchangeably) referred to as the "millimeter wave" band in documents and articles, despite being distinct from the extremely high frequency (EHF) band (30 GHz–300 GHz), which is identified as a "millimeter wave" band by the International Telecommunication Union (ITU).

[0061] Frequencies between FR1 and FR2 are often 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). Frequency bands falling within FR3 may inherit FR1 characteristics and / or FR2 characteristics, effectively extending the features of FR1 and / or FR2 to mid-band frequencies. Furthermore, higher frequency bands are currently being explored to extend 5G NR operation beyond 52.6 GHz. For example, three higher operating bands have been identified as frequency range designations FR4a or FR4-1 (52.6 GHz–71 GHz), FR4 (52.6 GHz–114.25 GHz), and FR5 (114.25 GHz–300 GHz). Each of these higher frequency bands falls within the EHF band.

[0062] Considering the above examples, unless otherwise specifically stated, it should be understood that if the term "sub-6 GHz" or the like is used herein, the term can be broadly construed to mean 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 can be broadly construed to mean frequencies that may be below 6 GHz, may be within FR1, or 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.

[0063] In some aspects, the UE 120 may include a communications manager 140. As described in greater detail elsewhere herein, the communications manager 140 may receive a reference LTM configuration indicating one or more reference SpCell configurations and zero or more reference SCell configurations; receive one or more candidate cell group configurations, each of the one or more candidate cell group configurations indicating one or more delta configurations relative to at least one of the one or more reference SpCell configurations or the zero or more reference SCell configurations; and perform an LTM process associated with a selected candidate cell group configuration from the one or more candidate cell group configurations. Additionally or alternatively, the communications manager 140 may perform one or more other operations described herein.

[0064] In some aspects, the network node 110 may include a communications manager 150. As described in more detail elsewhere herein, the communications manager 150 may send a reference LTM configuration to a UE indicating one or more reference SpCell configurations and zero or more reference SCell configurations; send one or more candidate cell group configurations to the UE, each of the one or more candidate cell group configurations indicating one or more delta configurations relative to at least one of the one or more reference SpCell configurations or the zero or more reference SCell configurations; and trigger, at the UE, an LTM process associated with a selected candidate cell group configuration of the one or more candidate cell group configurations.

[0065] Additionally or alternatively, the communications manager 150 may receive an indication of a reference LTM configuration from a second network node; identify one or more candidate cell configurations associated with one or more candidate cells for the LTM process based at least in part on the reference LTM configuration; and send an indication of the one or more candidate cell configurations to the second network node.

[0066] Additionally or alternatively, the communication manager 150 may receive an indication of one or more candidate cell configurations associated with one or more candidate cells for the LTM process from the second network node; identify one or more delta configurations for the one or more candidate cells relative to the reference LTM configuration based at least in part on the one or more candidate cell configurations and the reference LTM configuration; and send an indication of the one or more delta configurations to the UE. Additionally or alternatively, the communication manager 150 may perform one or more other operations described herein.

[0067] Additionally or alternatively, the communications manager 150 may send an indication of a reference LTM configuration to a second network node; and receive from the second network node an indication of one or more candidate cell configurations associated with one or more candidate cells for the LTM process, wherein the one or more candidate cell configurations are based at least in part on the reference LTM configuration.

[0068] As indicated above, Figure 1 are provided as examples. Other examples can be found in the Figure 1 The examples described are different.

[0069] 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.

[0070] 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 (MCSs) for UE 120 based at least in part on one or more channel quality indicators (CQIs) received from UE 120. Network node 110 may process (e.g., encode and modulate) 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 further 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).

[0071] At UE 120, a set of antennas 252 (shown as antennas 252a through 252r) may receive downlink signals from network node 110 and / or other network nodes 110 and may provide a set of received signals (e.g., R received signals) to a set of modems 254 (e.g., R modems) (shown as modems 254a through 254r). For example, each received signal may be provided to a demodulator component (shown as DEMOD) of a modem 254. Each modem 254 may use a 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, perform MIMO detection on the received symbols where applicable, and 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 a 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.

[0072] 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.

[0073] 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.

[0074] On the uplink, at 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 a 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 a TX MIMO processor 266, as applicable, further processed by a 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 may include 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 7 to 15 ) any aspects of any of the methods described.

[0075] 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 decoded data to a data sink 239 and 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 may include 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 7 to 15 ) any aspects of any of the methods described.

[0076] The controller / processor 240 of the network node 110, the controller / processor 280 of the UE 120, and / or Figure 2 Any other component in the may perform one or more techniques associated with incremental configuration for L1 / L2 triggered mobility, 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 9 The process of 900 Figure 10 The process of 1000 Figure 11 Process 1100, Figure 12 1200 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 9 The process of 900 Figure 10 The process of 1000 Figure 11 Process 1100, Figure 12 The process 1200 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, among other things.

[0077] In some aspects, the UE 120 includes: means for receiving a reference LTM configuration indicating one or more reference SpCell configurations and zero or more reference SCell configurations; means for receiving one or more candidate cell group configurations, each of the one or more candidate cell group configurations indicating one or more delta configurations relative to at least one of the one or more reference SpCell configurations or the zero or more reference SCell configurations; and / or means for performing an LTM process associated with a selected candidate cell group configuration of the one or more candidate cell group configurations. Means for the UE 120 to perform the operations described herein may include, for example, one or more of the communications manager 140, antenna 252, modem 254, MIMO detector 256, receive processor 258, transmit processor 264, TX MIMO processor 266, controller / processor 280, or memory 282.

[0078] In some aspects, the network node 110 includes: means for sending a reference LTM configuration to a UE indicating one or more reference SpCell configurations and zero or more reference SCell configurations; means for sending one or more candidate cell group configurations to the UE, each of the one or more candidate cell group configurations indicating one or more delta configurations relative to at least one of the one or more reference SpCell configurations or the zero or more reference SCell configurations; and / or means for triggering, at the UE, an LTM procedure associated with a selected candidate cell group configuration of the one or more candidate cell group configurations. In some other aspects, the network node 110 includes: means for receiving an indication of the reference LTM configuration from a second network node; means for identifying one or more candidate cell configurations associated with one or more candidate cells for the LTM procedure based at least in part on the reference LTM configuration; and / or means for sending an indication of the one or more candidate cell configurations to the second network node. In some other aspects, the network node 110 includes: means for receiving, from a second network node, an indication of one or more candidate cell configurations associated with one or more candidate cells for an LTM procedure; means for identifying, based at least in part on the one or more candidate cell configurations and a reference LTM configuration, one or more delta configurations for the one or more candidate cells relative to the reference LTM configuration; and / or means for sending an indication of the one or more delta configurations to a UE. In some other aspects, the network node 110 includes: means for sending an indication of the reference LTM configuration to the second network node; and means for receiving, from the second network node, an indication of one or more candidate cell configurations associated with the one or more candidate cells for an LTM procedure, wherein the one or more candidate cell configurations are based at least in part on the reference LTM configuration. Means for the first network node to perform operations described herein may include, for example, one or more of the following: a communication manager 150, a transmit processor 220, a TX MIMO processor 230, a modem 232, an antenna 234, a MIMO detector 236, a receive processor 238, a controller / processor 240, a memory 242, or a scheduler 246.

[0079] In some aspects, a single processor may perform all of the functions described as being performed by the one or more processors. In some aspects, the one or more processors may collectively perform a set of functions. For example, a first set of processors in the one or more processors (one or more processors) may perform a first function described as being performed by the one or more processors, and a second set of processors in the one or more processors (one or more processors) may perform a second function described as being performed by the one or more processors. The first set of processors and the second set of processors may be the same set of processors or may be different sets of processors. References to "one or more processors" should be understood to refer to the combination Figure 2 Any one or more processors described. References to "one or more memories" should be understood to refer to any one or more memories of the corresponding device, such as in conjunction with Figure 2 For example, functions described as being performed by one or more memories may be performed by the same subset of the one or more memories or by a different subset of the one or more memories.

[0080] 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.

[0081] As indicated above, Figure 2 are provided as examples. Other examples can be found in the Figure 2 The examples described are different.

[0082] The deployment of a communication system, such as a 5G NR system, can be arranged in a variety of ways using 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 can be implemented in a converged 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 functionality can be implemented as a converged base station (also known as a standalone base station or a single-chip base station) or a decomposed base station. A "network entity" or "network node" can 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).

[0083] A converged base station (e.g., a converged network node) can 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) can 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 can be implemented within a network node, and one or more DUs can be co-located with the CU, or alternatively, can be geographically or virtually spread across one or more other network nodes. The DU can be implemented to communicate with one or more RUs. Each of the CU, DU, and RU can 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.

[0084] 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 the 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 scalability of the communication system by separating base station functionality into one or more independently deployable units. 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.

[0085] Figure 3 FIG2 is a diagram illustrating an example decomposed base station architecture 300 according to the present disclosure. Decomposed base station architecture 300 may include a CU 310, which 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). CU 310 may communicate with one or more DUs 330 via corresponding midhaul links (such as via an F1 interface). Each of DUs 330 may communicate with one or more RUs 340 via corresponding fronthaul links. Each of RUs 340 may communicate with one or more UEs 120 via corresponding radio frequency (RF) access links. In some implementations, a UE 120 may be served simultaneously by multiple RUs 340.

[0086] Each of the units (including the CU 310, DU 330, and RU 340), as well as 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 the 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 the wireless transmission medium, or both.

[0087] In some aspects, the CU 310 may host one or more higher-layer control functions. Such control functions may include 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 configured to communicate signals with other control functions hosted by the CU 310. The CU 310 may be configured to handle user plane functionality (e.g., Central Unit-User Plane (CU-UP) functionality), control plane functionality (e.g., Central Unit-Control Plane (CU-CP) functionality), or a combination thereof. In some 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 units may communicate bidirectionally with the CU-CP units 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.

[0088] 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, a 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, a 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.

[0089] Each RU 340 may implement low-layer functionality. In some deployments, a RU 340 controlled by a DU 330 may correspond to a logical node that hosts RF processing functions or low PHY layer functions, such as performing FFTs, performing iFFTs, digital beamforming, or PRACH extraction and filtering, based on a functional split (e.g., a functional split defined by 3GPP), such as a low-layer functional split. In such an architecture, each RU 340 may be operated to handle over-the-air (OTA) communications with one or more UEs 120. In some implementations, both real-time and non-real-time aspects of control 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.

[0090] 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 may include, but are not limited to, the 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.

[0091] 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 via 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.

[0092] In some implementations, to generate AI / ML models to be deployed in the near-RT RIC 325, the non-RT RIC 315 may receive parameters or external enrichment information from an external server. Such information may be utilized by the near-RT RIC 325 and may be received from non-network data sources or from network functions at the SMO framework 305 or the non-RT RIC 315. In some examples, the non-RT RIC 315 or the near-RT RIC 325 may be configured to tune RAN behavior or performance. For example, the non-RT RIC 315 may monitor long-term trends and patterns in performance and employ AI / ML models to execute 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).

[0093] As indicated above, Figure 3 are provided as examples. Other examples can be found in the Figure 3 The examples described are different.

[0094] Figure 4 is a diagram illustrating an example 400 of an LTM process according to the present disclosure.

[0095] In some examples, network node 110 may instruct UE 120 to change serving cells, such as when UE 120 moves away from the coverage of a current serving cell (sometimes referred to as a source cell) and toward the coverage of a neighboring cell (sometimes referred to as a target cell). In some cases, network node 110 may instruct UE 120 to change cells using a Layer 3 (L3) handover procedure. The L3 handover procedure may include network node 110 sending an RRC reconfiguration message to UE 120 indicating that UE 120 should perform a handover procedure to the target cell. The RRC reconfiguration message may be sent in response to UE 120 providing an L3 measurement report to network node 110, the L3 measurement report indicating signal strength measurements associated with various cells (e.g., measurements associated with the source cell and one or more neighboring cells). In response to receiving the RRC reconfiguration message, UE 120 may communicate with the source cell and the target cell to detach from the source cell and connect to the target cell (e.g., UE 120 may establish an RRC connection with the target cell). Once the handover is complete, the target cell may communicate with the user plane function (UPF) of the core network to instruct the UPF to switch the user plane path of UE 120 from the source cell to the target cell. The target cell may also communicate with the source cell to indicate that the handover is complete and the source cell may be released.

[0096] The L3 handover procedure may be associated with high latency and high overhead due to the multiple RRC reconfiguration messages and / or other L3 signaling and operations used to perform the handover procedure. Therefore, in some examples, UE 120 may be configured to perform a lower layer (e.g., L1 and / or L2) handover procedure, sometimes referred to as an LTM procedure, such as Figure 4 The example 400 LTM process shown in Figure 4 As shown, the LTM process may include four stages: LTM preparation stage, early synchronization stage (in Figure 4 ), LTM execution phase and / or LTM completion phase.

[0097] During the LTM preparation phase and as indicated by reference numeral 405, UE 120 may be in an RRC connected state (sometimes referred to as RRC_Connected) with the source cell. As indicated by reference numeral 410, UE 120 may send and network node 110 may receive a measurement report (sometimes referred to as a MeasurementReport), which may be an L3 measurement report. The measurement report may indicate signal strength measurements (e.g., RSRP, RSSI, RSRQ, and / or CQI) or similar measurements associated with the source cell and / or one or more neighboring cells. In some examples, based at least in part on the measurement report or other information, network node 110 may decide to use LTM and, accordingly, as indicated by reference numeral 415, network node 110 may initiate LTM candidate preparation.

[0098] As indicated by reference numeral 420, network node 110 may send, and UE 120 may receive, an RRC reconfiguration message (sometimes referred to as an RRCReconfiguration message), which may include an LTM candidate configuration. More specifically, the RRC reconfiguration message may indicate a configuration of one or more LTM candidate target cells, which may be candidate cells to become the UE's serving cell and / or cells for which UE 120 may later be triggered to perform an LTM procedure. As indicated by reference numeral 425, UE 120 may store the configuration of the one or more LTM candidate cell configurations and, in response, may send an RRC reconfiguration complete message (sometimes referred to as an RRCReconfigurationComplete message) to network node 110.

[0099] During the early synchronization phase and as indicated by reference numeral 430, UE 120 may optionally perform downlink / uplink synchronization with a candidate cell associated with the one or more LTM candidate cell configurations. For example, UE 120 may perform downlink synchronization and timing advance acquisition with the one or more candidate target cells prior to receiving an LTM handover command (described in more detail below in conjunction with reference numeral 445). In some aspects, performing early synchronization with the one or more candidate cells may reduce latency associated with performing a random access channel (RACH) procedure later in the LTM process, as described in more detail below in conjunction with reference numeral 455.

[0100] During the LTM execution phase and as indicated by reference numeral 435, UE 120 may perform L1 measurements on the configured LTM candidate target cell and, accordingly, may send a lower layer (e.g., L1) measurement report to network node 110. Based at least in part on the lower layer measurement report, network node 110 may decide to perform an LTM cell handover to the target cell, as indicated by reference numeral 440. Accordingly, as indicated by reference numeral 445, network node 110 may send, and UE 120 may receive, a MAC Control Element (MAC-CE) or similar message that triggers the LTM cell handover (this MAC-CE or similar message is sometimes referred to herein as a cell handover command). The cell handover command may include an indication of a candidate configuration index associated with the target cell. Based at least in part on receiving the cell handover command, UE 120 may switch to the configuration of the LTM candidate target cell, as indicated by reference numeral 450 (e.g., UE 120 may detach from the source cell and apply the target cell configuration). Additionally, as shown at reference numeral 455, UE 120 may perform a RACH procedure toward a target cell, such as when a timing advance associated with the target cell is not available (e.g., in examples where UE 120 does not perform early synchronization as described above in connection with reference numeral 430).

[0101] During the LTM completion phase and as indicated by reference numeral 460, the UE 120 may indicate successful completion of the LTM cell handover toward the target cell. In this manner, the cell handover to the target cell may be performed using less overhead than the L3 handover procedure and / or may be associated with lower latency than the L3 handover procedure. Figure 5 Various aspects of LTM candidate cell configuration are described in more detail.

[0102] As indicated above, Figure 4 are provided as examples. Other examples can be found in the Figure 4 The examples described are different.

[0103] Figure 5 is a diagram illustrating an example 500 of RRC modeling associated with an LTM process according to the present disclosure.

[0104] As above combined Figure 4 As described, in some examples, LTM may be configured via RRC, and more specifically, via an RRC reconfiguration message 505 (e.g., the RRC reconfiguration message described above in conjunction with reference numeral 420). In some examples, the RRC reconfiguration message 505 may indicate certain data structures and / or information elements (IEs), such as a cell group configuration 510 (sometimes referred to as a CellGroupConfig IE), a radio bearer configuration 515 (sometimes referred to as a RadioBearerConfig IE), a measurement configuration 520 (sometimes referred to as a MeasConfig IE), a master key update configuration 525 (sometimes referred to as a MasterKeyUpdate IE), and / or other configuration information 530 (sometimes referred to as an OtherConfig IE).

[0105] In some aspects, the cell group configuration 510 may include configuration information associated with one or more target cells. For example, the CellGroupConfig IE may be used to configure a master cell group (MCG) or a secondary cell group (SCG). A cell group may include a MAC entity, a set of logical channels with associated RLC entities, a primary cell associated with a corresponding MCG or a corresponding SCG (e.g., a primary cell (PCell) in the case of an MCG or a primary secondary cell (PSCell) in the case of an SCG, where each cell is more generally referred to as an SpCell), and one or more SCells associated with the corresponding MCG or the corresponding SCG. In this regard, the cell group configuration 510 may include one or more SpCell configurations 535 (sometimes referred to as SCellConfig IEs) and / or one or more SCell configurations 540 (sometimes referred to as SCellConfig IEs).

[0106] In some aspects, the serving cell index IE (sometimes referred to as the ServCellIndex IE) may indicate a short identity for uniquely identifying a serving cell (e.g., indicating a SpCell or SCell as a serving cell). For example, the serving cell index IE may indicate a value of "0" when the SpCell is the serving cell, and may indicate the SCell index value (sometimes referred to as SCellIndex) of the corresponding SCell when the SCell is the serving cell. The SCell index value may be a value previously assigned to one or more SCells via the CellGroupConfig IE. For example, the CellGroupConfig IE may include an SCell add / modify list parameter (sometimes referred to as SCellToAddModList) and / or an SCell release list (sometimes referred to as SCellToRelease), which may be used to indicate the SCell index associated with the one or more SCells.

[0107] In some examples, UE 120 may be configured with one RRC reconfiguration message 505 for each candidate LTM configuration (this is sometimes referred to as "RRC Model 1"). That is, each candidate LTM configuration may be indicated to the UE via a corresponding RRC reconfiguration message 505. In some other examples, UE 120 may be configured with a single RRC reconfiguration message 505 that includes multiple candidate LTM configurations (this is sometimes referred to as "RRC Model 2"). For example, RRC reconfiguration message 505 may include multiple cell group configurations 510 (e.g., multiple CellGroupConfig IEs), one for each candidate LTM configuration. In this regard, each candidate LTM configuration may be associated with a configuration identifier (ID) and a cell group configuration 510 (e.g., a CellGroupConfig IE), and optionally, a radio bearer configuration 515 (e.g., a RadioBearerConfig IE) and / or a measurement configuration 520 (e.g., a MeasConfig IE), as well as other information.

[0108] In some examples, candidate LTM configurations can only be modified and / or released by the network. For example, a "ToAddMod" data structure (e.g., SCellToAddModList or a similar data structure) can be used by the network to add and / or modify candidate LTM configurations, and / or a "ToRelease" data structure (e.g., SCellToReleaseList or a similar data structure) can be used by the network to release candidate LTM configurations. Furthermore, in some examples, sequential L1 / L2 cell changes between candidate cells and / or cell groups can be performed without requiring RRC reconfiguration. Figure 6Sequential L1 / L2 cell changes are described in more detail.

[0109] As indicated above, Figure 5 are provided as examples. Other examples can be found in the Figure 5 The examples described are different.

[0110] Figure 6 is a diagram illustrating an example 600 of sequential LTM execution according to the present disclosure.

[0111] like Figure 6 As shown, the UE 120 may be configured with a single RRC configuration 605 that supports sequential L1 / L2 cell changes (e.g., the UE 120 may not need to perform RRC reconfiguration between sequential cell changes). More specifically, the single RRC configuration 605 may configure multiple candidate cell group configurations (e.g., multiple CellGroupConfig IEs) for the UE 120, as described above in conjunction with Figure 5 As described, the UE 120 can perform sequential L1 / L2 cell switching without RRC reconfiguration. Figure 6 In the example shown, UE 120 may be configured with a first cell group 610 (shown as "CG1"), a second cell group 615 (shown as "CG2"), and a third cell group 620 (shown as "CG3"), among other cell group configurations. Each cell group may include one or more cells, such as an SpCell and one or more SCells. In some examples, some cells may be included in multiple cell groups, while in some other examples, some cell groups may include different cells than other cell groups. Additionally or alternatively, some cell groups may include more or fewer cells than other cell groups. For example, in Figure 6 In the example 600 depicted in FIG, the first cell group 610 and the third cell group 620 may be associated with three cells, while the second cell group 615 may be associated with two cells.

[0112] In some aspects, UE 120 may receive a cell handover command from network node 110 and may perform the cell handover command in accordance with the above. Figure 4The LTM procedure may be performed in a manner similar to that described with reference numerals 435-455 of FIG. For example, UE 120 may initially connect to first cell group 610 and may receive a cell handover command from network node 110 instructing the UE to perform an LTM procedure to second cell group 615. Consequently, UE 120 may perform a first LTM execution, as indicated by reference numeral 625. After attaching to second cell group 615, UE 120 may receive another cell handover command from network node 110 (without performing RRC reconfiguration) instructing the UE to perform an LTM procedure to third cell group 620. Consequently, UE 120 may perform a second LTM execution, as indicated by reference numeral 630.

[0113] In some examples, to reduce signaling overhead and otherwise conserve power, computation, and network resources, various LTM configurations may be indicated to UE 120 as incremental configurations. An incremental configuration may refer to a configuration that indicates differences between the configuration and a base or reference configuration (such as a source configuration for a serving cell group). In other words, UE 120 may be configured with one or more incremental configurations associated with a candidate LTM configuration, which may be defined based on a reference configuration (e.g., the source configuration for the current serving cell group). In such examples, performing consecutive LTM procedures (such as described above in conjunction with reference numerals 625 and 630) without intervening RRC reconfigurations may result in communication errors or even RLF. This is because the source configuration (e.g., the configuration associated with UE 120's current serving cell group) changes with each successive cell handover, and therefore, applying an incremental configuration (which may have been configured using a different source configuration as the base or reference configuration) to the current source configuration may result in UE 120 being incorrectly configured. As a result, the UE 120 and the network node 110 may experience communication errors or RLF, requiring higher power, computation, and network resource consumption to correct the communication errors and / or re-establish the RRC connection with the cell group.

[0114] Some techniques and apparatus described herein support the use of incremental configurations relative to a dedicated and / or separate reference configuration, thereby reducing communication errors and / or lowering the risk of RLF associated with LTM handovers. In some aspects, a UE 120 may be configured with a reference LTM configuration (e.g., a separate LTM configuration maintained by the UE 120 for reference purposes) that indicates one or more reference SpCell configurations and / or zero or more reference SCell configurations. The UE 120 may also be configured with one or more candidate cell configurations that indicate one or more incremental configurations relative to the one or more SpCell configurations and the zero or more SCell configurations. In response to receiving a cell handover command, the UE 120 may apply the candidate cell configuration based at least in part on reference to the reference LTM configuration and the corresponding incremental configuration. In this regard, the candidate cell configuration may not depend on the source cell configuration, thereby allowing the UE 120 to perform a sequential LTM procedure without an intermediate RRC reconfiguration. Thus, the UE 120 and the network node 110 may experience reduced communication errors or a reduced risk of RLF after the LTM procedure, thereby reducing power, computation, and network resource consumption that would otherwise be required to correct communication errors and / or reestablish an RRC connection with a cell group.

[0115] As indicated above, Figure 6 are provided as examples. Other examples can be found in the Figure 6 The examples described are different.

[0116] Figure 7 is a diagram of an example 700 associated with an incremental configuration for an LTM according to the present disclosure. Figure 7 As shown, a network node 110 (e.g., a CU, DU, and / or RU) may communicate with a UE 120. In some aspects, the network node 110 and the UE 120 may be part of a wireless network (e.g., the wireless network 100). The network node 110 and the UE 120 may be in a Figure 7 The operations shown have already established a wireless connection. In some aspects, the network node 110 and / or the UE 120 may have a function to perform an LTM process (such as described above in conjunction with Figures 4 to 6 The ability of the LTM process described.

[0117] As shown by reference numerals 705 and 710, the network node 110 may send and the UE 120 may receive configuration information. In some aspects, the UE 120 may receive the configuration information via one or more of RRC signaling, one or more MAC CEs, and / or downlink control information (DCI), etc. In some aspects, the configuration information may include an indication of one or more configuration parameters for selection by the UE 120 (e.g., already known to the UE 120 and / or previously indicated by the network node 110 or other network device), and / or explicit configuration information for use by the UE 120 to configure the UE 120, etc.

[0118] As shown by reference numeral 705, in some aspects, the configuration information may include one or more reference LTM configurations. Each of the one or more reference LTM configurations may indicate one or more reference cell configurations, such as one or more reference SpCell configurations and zero or more reference SCell configurations. In other words, each of the one or more reference LTM configurations may include at least one reference SpCell configuration and optionally one or more reference SCell configurations.

[0119] As shown at reference numeral 710, in some aspects, the configuration information may include one or more candidate cell group configurations (e.g., one or more CellGroupConfig IEs). Figure 5 In the aspects of RRC Model 1 described above, UE 120 may be configured with the one or more candidate cell group configurations using a separate RRC configuration for each candidate cell group configuration, wherein each of the separate RRC configurations includes a corresponding CellGroupConfig IE indicating the candidate cell group configuration. In some other aspects, such as when using the above in combination with Figure 5 In the described aspects of RRC Model 2, the UE 120 may be configured with the one or more candidate cell group configurations using a single RRC configuration for all of the one or more candidate cell group configurations, wherein the single RRC configuration includes a corresponding CellGroupConfig IE applicable to each candidate cell group configuration.

[0120] In some aspects, each of the one or more candidate cell group configurations (e.g., each of the one or more CellGroupConfig IEs) may indicate one or more delta configurations relative to at least one of the one or more reference SpCell configurations or the zero or more reference SCell configurations (e.g., the delta configurations may be configured relative to a separate reference LTM configuration and / or the one or more reference cell configurations associated with the reference LTM configuration). UE 120 may store the reference configuration separately from the source configuration (e.g., storing the reference configuration in a separate location and / or using a separate name) so that if UE 120 changes the source cell via an LTM procedure, UE 120 may perform a subsequent L1 / L2 cell handover if RRC reconfiguration is required. More specifically, when a subsequent LTM procedure is triggered, UE 120 may apply the candidate cell group configuration associated with the subsequently indicated cell group, which may be a delta configuration relative to the reference LTM configuration rather than the current source cell configuration.

[0121] In some aspects, the reference LTM configuration may include a single reference SpCell configuration and, optionally, a single reference SCell configuration (e.g., when one or more candidate SCells are being configured, the reference LTM configuration may include a single reference SCell configuration). In these aspects, a candidate cell group configuration (e.g., CellGroupConfig IE) may be associated with the candidate SpCell configuration, where the candidate SpCell configuration is configured as a delta configuration relative to the reference SpCell configuration. Furthermore, in aspects where one or more candidate SCells are configured, the candidate cell group configuration may be associated with one or more candidate SCell configurations, where each of the one or more candidate SCell configurations is configured as a delta configuration relative to the reference SCell configuration.

[0122] In some aspects, a reference LTM configuration may include a single reference SpCell configuration and, optionally, one or more reference SCell configurations (e.g., when one or more candidate SCells are being configured, the reference LTM configuration may include the one or more reference SCell configurations). In these aspects, a candidate cell group configuration (e.g., a CellGroupConfig IE) may be associated with the candidate SpCell configuration, with the candidate SpCell configuration configured as a delta configuration relative to the reference SpCell configuration. Furthermore, in aspects in which one or more candidate SCells are configured, the reference LTM configuration may include one or more reference SCell configurations, each associated with a corresponding SCell index (e.g., an SCellIndex as indicated using SCellToAddModList and / or SCellToReleaseList), and the candidate cell group configuration may include one or more candidate SCell configurations, each also associated with a corresponding SCell index. In these aspects, each of the one or more candidate SCell configurations may be configured as a delta configuration relative to a reference SCell configuration, with the reference SCell configuration being associated with the same corresponding SCell index as the candidate SCell configuration. For example, the candidate SCell associated with SCell index "5" may be configured as an incremental configuration relative to a reference SCell configuration also associated with SCell index "5", the candidate SCell associated with SCell index "7" may be configured as an incremental configuration relative to a reference SCell configuration also associated with SCell index "7", and so on.

[0123] In some other aspects, a candidate cell group configuration (e.g., CellGroupConfig IE) may be associated with a candidate SpCell configuration and / or one or more candidate SCell configurations, where the candidate SpCell configuration and / or the one or more candidate SCell configurations are configured as delta configurations relative to any reference cell configuration in the reference cell configuration. More specifically, the candidate SpCell configuration may be configured as a delta configuration relative to the reference SpCell configuration or any of the one or more reference SCell configurations. Similarly, each of the one or more candidate SCell configurations may be configured as a delta configuration relative to the reference SpCell configuration or any of the one or more reference SCell configurations.

[0124] In some other aspects, the reference LTM configuration may include one or more reference SpCell configurations (e.g., in some examples, the reference LTM configuration may include multiple SpCell configurations) and optionally one or more reference SCell configurations (e.g., when one or more candidate SCells are being configured, the reference LTM configuration may include one or more reference SCell configurations). In these aspects, a candidate cell group configuration (e.g., CellGroupConfig IE) may be associated with a candidate SpCell configuration, which is configured as a delta configuration relative to a reference SpCell configuration in the one or more reference SpCell configurations. In this regard, the candidate SpCell configuration may include an indication of the associated reference SpCell configuration. For example, the candidate SpCell configuration may indicate an index associated with the reference SpCell configuration to which the delta configuration corresponds. In addition, in aspects in which one or more candidate SCells are configured, the candidate cell group configuration may be associated with one or more candidate SCell configurations, wherein each of the one or more candidate SCell configurations is configured as an incremental configuration relative to a reference SCell configuration and / or SpCell configuration (e.g., the candidate SCell configuration may be configured as an incremental configuration relative to: a single indicated reference SCell configuration, a reference SCell configuration associated with the same corresponding SCell index as the candidate SCell configuration, the one or more reference SpCell configurations, or any of the one or more reference SCell configurations, etc.).

[0125] In some aspects, incremental signaling may not be used for one or more cells within a cell group configuration (e.g., CellGroupConfig IE). For example, in aspects where a particular candidate cell configuration differs significantly from a reference cell configuration, the candidate cell configuration may include a complete candidate SpCell configuration and / or a complete candidate SCell configuration (e.g., a separate configuration that is not indicated as an increment relative to a base configuration or a reference configuration). In this regard, in some aspects, the candidate cell group configuration may indicate whether an incremental configuration is provided and / or whether a complete configuration is provided. Additionally or alternatively, in aspects where multiple reference cells (e.g., one or more reference SpCells and / or one or more SCells) are configured by reference to an LTM configuration, the candidate cell configuration may include an indication of which reference cell a particular incremental configuration applies to. For example, each reference cell configuration may be associated with a cell index, and each candidate cell configuration (e.g., each incremental configuration) may indicate the index of the reference cell configuration to which the incremental configuration is associated.

[0126] In some aspects, the configuration information described above in conjunction with reference numeral 705 may include multiple reference LTM configurations. That is, the network node 110 may send, and the UE 120 may receive, the multiple reference LTM configurations. In these aspects, the network node 110 may indicate which reference LTM configuration to use for a particular incremental configuration. More specifically, the network node 110 may send, and the UE 120 may receive, an indication of a reference LTM configuration selected from the multiple reference LTM configurations for preparing the one or more incremental configurations (e.g., an indication of a reference LTM configuration that should be used when configuring the UE 120 using the candidate cell group configuration associated with the incremental configuration).

[0127] UE 120 may configure itself based at least in part on the configuration information.In some aspects, UE 120 may be configured to perform one or more operations described herein based at least in part on the configuration information.

[0128] As indicated by reference numeral 715, the UE may send, and the network node 110 may receive, an L1 measurement report (e.g., the L1 measurement report described above in connection with reference numeral 435). In some aspects, the L1 measurement report may indicate a signal strength measurement (e.g., RSRP, RSSI, RSRQ, and / or CQI) or similar measurement associated with the one or more candidate cell group configurations. As indicated by reference numeral 720, the network node 110 may make an LTM decision based at least in part on the L1 measurement report. In other words, based at least in part on the L1 measurement report, the network node 110 may decide to perform an LTM cell handover to a candidate cell. Accordingly, as indicated by reference numeral 725, the network node 110 may send, and the UE 120 may receive, a MAC-CE or similar message triggering an LTM cell handover (e.g., the network may send a cell handover command triggering the LTM procedure). The cell handover command may include an indication of the candidate configuration index associated with the target cell. As indicated by reference numeral 730, based at least in part on receiving the cell handover command, the UE 120 may perform an LTM process associated with a selected candidate cell group configuration (eg, the candidate cell group configuration indicated by the cell handover command).

[0129] Based at least in part on configuring the UE 120 using an incremental configuration relative to a dedicated and / or separate reference configuration associated with one or more reference SpCells and zero or more reference SCells, the UE 120 and / or the network node 110 can conserve computational, power, network, and / or communication resources that would otherwise be consumed by conventional LTM procedures. For example, based at least in part on configuring the UE 120 using an incremental configuration relative to a dedicated and / or separate reference configuration associated with one or more reference SpCells and zero or more reference SCells, the UE 120 and the network node 110 can perform a sequential LTM procedure without requiring intermediate RRC reconfigurations and with reduced error rates, which can conserve computational, power, network, and / or communication resources that would otherwise be consumed by sending RRC signals and / or detecting and / or correcting communication errors.

[0130] As indicated above, Figure 7 are provided as examples. Other examples can be found in the Figure 7 The examples described are different.

[0131] Figures 8A to 8B is a diagram of an example 800 associated with an incremental configuration for an LTM according to the present disclosure. Figures 8A to 8B As shown, a first network node (e.g., CU 805) may communicate with a second network node (e.g., DU 810). In some aspects, CU 805 and DU 810 may be part of a wireless network (e.g., wireless network 100). CU 805 and / or DU 810 may be able to communicate with other network devices (such as UE 120). For example, CU 805, DU 810, and / or UE 120 may be in a Figures 8A to 8B The operations shown have previously established a wireless connection. In some aspects, the CU 805 and / or the DU 810 may correspond to the above combined Figure 7 Described network node 110. Additionally or alternatively, in some aspects, CU 805 and / or DU 810 may be associated with a candidate cell and / or target cell for a mobility procedure (eg, LTM procedure) and / or a candidate cell group and / or target cell group for a mobility procedure.

[0132] In some aspects, the CU 805 and the DU 810 may collaborate to determine one or more candidate cell group configurations, such as one or more of the example candidate cell group configurations described above in conjunction with reference numeral 710. For example, Figure 8AAs shown, in some aspects, the DU 810 may determine a delta configuration relative to a reference LTM configuration (such as the example reference LTM configuration described above in conjunction with reference numeral 705). More specifically, as shown at reference numeral 815, the CU 805 may send and the DU 810 may receive an indication of one or more reference LTM configurations. In a manner similar to that described above in conjunction with reference numeral 705, in some aspects, the reference LTM configuration may be associated with one or more reference cell configurations. For example, the reference LTM configuration may be associated with one or more reference SpCell configurations and zero or more reference SCell configurations, as described above in conjunction with reference numeral 705. Figure 7 described.

[0133] In some aspects, the CU 805 may transmit the one or more reference LTM configurations based at least in part on the CU 805 performing an LTM decision. For example, the UE 120 may provide an L3 measurement report to the CU 805 via a source DU. Based at least in part on the L3 measurement report, the CU 805 may determine that the UE 120 should be configured for LTM. In this regard, based at least in part on the LTM decision, the CU 805 may transmit the communication shown in conjunction with reference numeral 815 (e.g., an indication of the one or more reference LTM configurations). In some aspects, the communication shown in conjunction with reference numeral 815 may be transmitted as part of a UE context establishment or modification request communication.

[0134] As indicated by reference numeral 820, the CU 805 may send, and the DU 810 may receive, an indication of source cell information associated with a source cell of the UE 120. For example, the CU 805 may provide an indication of one or more source cells associated with the UE 120, an indication of a cell group configuration (e.g., a CellGroupConfig IE) associated with the one or more source cells associated with the UE 120, and / or an indication of a source RRC configuration. In some aspects, the communication shown in conjunction with reference numeral 820 may be sent as part of a UE context establishment or modification request communication.

[0135] As shown at reference numeral 825, DU 810 may identify one or more candidate cell configurations associated with one or more candidate cells for the LTM process based at least in part on the reference LTM configuration. In aspects where source cell information of UE 120 is provided to DU 810 (as described above in conjunction with reference numeral 820), DU 810 may also identify the one or more candidate cell configurations based at least in part on the source cell information. In some aspects, the one or more candidate cell configurations may be associated with a candidate cell group configuration (e.g., CellGroupConfig IE), as described above in conjunction with reference numeral 710.

[0136] Additionally or alternatively, the one or more candidate cell configurations may be associated with one or more incremental configurations. For example, the one or more candidate cell configurations may be indicated as incremental configurations relative to one or more reference cell configurations associated with a reference LTM configuration, as described above in conjunction with reference numeral 710. In some other aspects, one or more of the candidate cell configurations may be associated with a complete configuration, such as when the one or more candidate cell configurations differ significantly from the reference LTM configuration.

[0137] As indicated by reference numeral 830, the DU 810 may transmit, and the CU 805 may receive, an indication of the one or more candidate cell configurations. For example, the DU 810 may transmit an indication of one or more CellGroupConfig IEs for one or more candidate cell groups, each of the one or more CellGroupConfig IEs indicating a delta configuration relative to a reference LTM configuration for the one or more candidate cells and / or a full configuration for the one or more candidate cells. In aspects where the one or more candidate cell configurations include delta signaling, the DU 810 may indicate to the CU 805 that the one or more delta configurations are being used. For example, the DU 810 may transmit to the CU 805 (e.g., as part of the one or more candidate cell configurations) an indication that the one or more candidate cell configurations are associated with the one or more delta configurations. Similarly, in aspects where the one or more candidate cell configurations are associated with a full configuration (e.g., not associated with delta signaling), the DU 810 may indicate to the CU 805 that the one or more full configurations are being used. For example, the DU 810 may send to the CU 805 (eg, as part of the one or more candidate cell configurations) an indication that the one or more candidate cell configurations are associated with the one or more complete configurations.

[0138] In some aspects, in conjunction with the operations described above in conjunction with reference numeral 815, the CU 805 may transmit, and the DU 810 may receive, multiple reference LTM configurations. In these aspects, the DU 810 may use incremental signaling to indicate to the CU 805 a particular reference LTM configuration for generating a candidate cell configuration and / or a candidate cell group configuration. For example, the DU 810 may select one of the multiple reference LTM configurations to prepare the incremental configuration, and the DU 810 may transmit, and the CU 805 may receive, an indication of the selected LTM configuration from the multiple reference LTM configurations. In some aspects, the communication illustrated in conjunction with reference numeral 830 may be transmitted as part of a UE context establishment or modification response communication.

[0139] As indicated by reference numeral 835, based at least in part on the one or more candidate cell configurations, the CU 805, the DU 810, and / or another network node (e.g., a source DU) may configure the UE 120 for LTM (e.g., the CU 805, the DU 810, and / or the source DU may send an indication of the one or more candidate cell configurations to the UE 120, which may include one or more incremental configurations and / or one or more full configurations). For example, the CU 805 may send the one or more candidate cell configurations to the source DU via a downlink messaging communication. The source DU may then configure the UE 120 using the one or more candidate cell configurations via an RRC reconfiguration communication (similar to the communications described above in connection with reference numerals 420, 705, and / or 710). In some aspects, the source DU and the candidate DU and / or target DU may be the same DU (e.g., the source DU may also be associated with one or more candidate cells and / or target cells), while in some other aspects, the source DU may be different from the candidate DU and / or target DU.

[0140] like Figure 8B As shown, in some aspects, the CU 805 may determine a delta configuration relative to a reference LTM configuration (such as the example reference LTM configuration described above in conjunction with reference numeral 705). More specifically, as shown at reference numeral 840, the DU 810 may send and the CU 805 may receive an indication of one or more candidate cell configurations associated with one or more candidate cells for the LTM process. Figure 8AIn a manner similar to that described above, the one or more candidate cell configurations may be sent as part of a UE context establishment or modification response communication. Additionally or alternatively, in some aspects, the one or more candidate cell configurations may be associated with a candidate cell group configuration (e.g., CellGroupConfig IE). In some aspects, the one or more candidate cell group configurations may be complete configurations. In other words, the CU 805 may not indicate the one or more reference LTM configurations to the DU 810 before the DU 810 prepares the one or more candidate cell configurations, and / or the DU 810 may not originally be aware of the one or more reference LTM configurations. Furthermore, in some aspects, the CU 805 may request the DU 810 to provide the one or more candidate cell configurations or candidate cell group configurations using a complete configuration. In this regard, the CU 805 may send (e.g., as part of a UE context establishment request communication) and the DU 810 may receive an indication that the one or more candidate cell configurations are to be provided as a complete configuration. In these aspects, in conjunction with the message shown by reference numeral 840, based at least in part on the indication that the one or more candidate cell configurations are to be provided as complete configurations, the DU 810 may send and the CU 805 may receive one or more complete configurations for the one or more candidate cells.

[0141] As shown at reference numeral 845, the CU 805 may identify one or more delta configurations for the one or more candidate cells relative to the reference LTM configuration based at least in part on the one or more candidate cell configurations received from the DU 810 (e.g., the one or more complete configurations received from the DU 810) and the reference LTM configuration. In some aspects, the one or more candidate cell configurations may be associated with a candidate cell group configuration (e.g., a CellGroupConfig IE), as described above in conjunction with reference numeral 710.

[0142] As shown at reference numeral 850, CU 805, DU 810, and / or another network node (e.g., a source DU) may configure UE 120 for LTM (e.g., CU 805, DU 810, and / or the source DU may send an indication of the one or more candidate cell configurations to UE 120, which may include one or more incremental configurations and / or one or more complete configurations). For example, CU 805 may send the one or more candidate cell configurations to the source DU via downlink messaging communication in a manner similar to that described above in conjunction with reference numeral 835. The source DU may then configure UE 120 using the one or more candidate cell configurations via RRC reconfiguration communication (similar to the communications described above in conjunction with reference numerals 420, 705, and / or 710).

[0143] As indicated above, Figures 8A to 8B are provided as examples. Other examples can be found in the Figures 8A to 8B Different than described.

[0144] 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 the UE (eg, UE 120) performs operations associated with incremental configuration for LTM.

[0145] like Figure 9 As shown, in some aspects, process 900 may include receiving a reference LTM configuration indicating one or more reference SpCell configurations and zero or more reference SCell configurations (block 910). For example, the UE (e.g., using Figure 14 The receiving component 1402 and / or the communication manager 1406 depicted in FIG. 1404 may receive a reference LTM configuration indicating one or more reference SpCell configurations and zero or more reference SCell configurations, as described above.

[0146] like Figure 9 As further shown, in some aspects, process 900 may include receiving one or more candidate cell group configurations, each of the one or more candidate cell group configurations indicating one or more delta configurations relative to at least one of the one or more reference SpCell configurations or the zero or more reference SCell configurations (block 920). For example, the UE (e.g., using Figure 14 The receiving component 1402 and / or the communication manager 1406 depicted in the figure may receive one or more candidate cell group configurations, each of the one or more candidate cell group configurations indicating one or more incremental configurations relative to the one or more reference SpCell configurations or at least one of the zero or more reference SCell configurations, as described above.

[0147] like Figure 9 As further shown, in some aspects, process 900 may include performing an LTM process associated with a selected candidate cell group configuration from the one or more candidate cell group configurations (block 930). For example, the UE (e.g., using Figure 14 The communication manager 1406 depicted in FIG. 14 may perform an LTM process associated with a selected candidate cell group configuration of the one or more candidate cell group configurations, as described above.

[0148] 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.

[0149] In a first aspect, the selected candidate cell group configuration is associated with a candidate SpCell configuration, and the candidate SpCell configuration is indicated as a delta configuration relative to a reference SpCell configuration of the one or more reference SpCell configurations.

[0150] In a second aspect, alone or in combination with the first aspect, the reference LTM configuration indicates a reference SCell configuration, the selected candidate cell group configuration indicates a candidate SCell configuration, and the candidate SCell configuration is indicated as an incremental configuration relative to the reference SCell configuration.

[0151] In a third aspect, alone or in combination with one or more of the first and second aspects, the reference LTM configuration indicates one or more reference SCell configurations, each reference SCell configuration is associated with a corresponding SCell index, the selected candidate cell group configuration indicates one or more candidate SCell configurations, each candidate SCell configuration is associated with a corresponding SCell index, and each of the one or more candidate SCell configurations is indicated as an incremental configuration relative to the reference SCell configuration associated with the same corresponding SCell index as the candidate SCell configuration.

[0152] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the reference LTM configuration indicates one or more reference SCell configurations, the selected candidate cell group configuration indicates a candidate SpCell configuration, and the candidate SpCell configuration is indicated as an incremental configuration relative to the reference SCell configuration in the one or more reference SCell configurations.

[0153] In the fifth aspect, alone or in combination with one or more of the first to fourth aspects, the selected candidate cell group configuration indicates one or more candidate SCell configurations, and each candidate SCell configuration in the one or more candidate SCell configurations is indicated as an incremental configuration relative to a reference SpCell configuration in the one or more reference SpCell configurations.

[0154] In the sixth aspect, alone or in combination with one or more of the first to fifth aspects, the selected candidate cell group configuration indicates a candidate SpCell configuration, and the candidate SpCell configuration is indicated as an incremental configuration relative to a reference SpCell configuration indicated by the candidate SpCell configuration in the one or more SpCell configurations.

[0155] In the seventh aspect, alone or in combination with one or more of the first to sixth aspects, at least one of the one or more candidate cell group configurations includes at least one of a complete candidate SpCell configuration or a complete candidate SCell configuration.

[0156] In the eighth aspect, alone or in combination with one or more of the first to seventh aspects, at least one of the one or more candidate cell group configurations includes an indication that the one or more reference SpCell configurations or the at least one of the zero or more reference SCell configurations is associated with the one or more incremental configurations.

[0157] In a ninth aspect, alone or in combination with one or more of aspects one to eight, process 900 comprises: receiving an indication of a plurality of reference LTM configurations, wherein the reference LTM configuration is a selected reference LTM configuration from the plurality of reference LTM configurations; and receiving an indication that the reference LTM configuration is selected from the plurality of reference LTM configurations for preparing the one or more incremental configurations.

[0158] although Figure 9 Example blocks of process 900 are shown, but in some aspects, process 900 may include Figure 9 900. In some embodiments, the process 900 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 900 may be executed in parallel.

[0159] Figure 10 is a diagram illustrating an example process 1000, for example, performed by a network node, in accordance with the present disclosure. Example process 1000 is an example in which the network node (eg, network node 110) performs operations associated with incremental configuration for an LTM.

[0160] like Figure 10 As shown, in some aspects, process 1000 may include sending a reference LTM configuration indicating one or more reference SpCell configurations and zero or more reference SCell configurations to a UE (block 1010). For example, the network node (e.g., using Figure 15 The transmitting component 1504 and / or the communication manager 1506 depicted in FIG. 15 ) may transmit a reference LTM configuration indicating one or more reference SpCell configurations and zero or more reference SCell configurations to the UE, as described above.

[0161] like Figure 10As further shown, in some aspects, process 1000 may include sending one or more candidate cell group configurations to the UE, each of the one or more candidate cell group configurations indicating one or more delta configurations relative to at least one of the one or more reference SpCell configurations or the zero or more reference SCell configurations (block 1020). For example, the network node (e.g., using Figure 15 The sending component 1504 and / or the communication manager 1506 depicted in the figure may send one or more candidate cell group configurations to the UE, each of the one or more candidate cell group configurations indicating one or more incremental configurations relative to the one or more reference SpCell configurations or at least one of the zero or more reference SCell configurations, as described above.

[0162] like Figure 10 As further shown, in some aspects, process 1000 may include triggering, at the UE, an LTM process associated with a selected candidate cell group configuration from the one or more candidate cell group configurations (block 1030). For example, the network node (e.g., using Figure 15 The communication manager 1506 depicted in FIG. 15 may trigger, at the UE, an LTM process associated with a selected candidate cell group configuration of the one or more candidate cell group configurations, as described above.

[0163] 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.

[0164] In a first aspect, the selected candidate cell group configuration is associated with a candidate SpCell configuration, and the candidate SpCell configuration is indicated as a delta configuration relative to a reference SpCell configuration of the one or more reference SpCell configurations.

[0165] In a second aspect, alone or in combination with the first aspect, the reference LTM configuration indicates a reference SCell configuration, the selected candidate cell group configuration indicates a candidate SCell configuration, and the candidate SCell configuration is indicated as an incremental configuration relative to the reference SCell configuration.

[0166] In a third aspect, alone or in combination with one or more of the first and second aspects, the reference LTM configuration indicates one or more reference SCell configurations, each reference SCell configuration is associated with a corresponding SCell index, the selected candidate cell group configuration indicates one or more candidate SCell configurations, each candidate SCell configuration is associated with a corresponding SCell index, and each of the one or more candidate SCell configurations is indicated as an incremental configuration relative to the reference SCell configuration associated with the same corresponding SCell index as the candidate SCell configuration.

[0167] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the reference LTM configuration indicates one or more reference SCell configurations, the selected candidate cell group configuration indicates a candidate SpCell configuration, and the candidate SpCell configuration is indicated as an incremental configuration relative to the reference SCell configuration in the one or more reference SCell configurations.

[0168] In the fifth aspect, alone or in combination with one or more of the first to fourth aspects, the selected candidate cell group configuration indicates one or more candidate SCell configurations, and each candidate SCell configuration in the one or more candidate SCell configurations is indicated as an incremental configuration relative to a reference SpCell configuration in the one or more reference SpCell configurations.

[0169] In the sixth aspect, alone or in combination with one or more of the first to fifth aspects, the selected candidate cell group configuration indicates a candidate SpCell configuration, and the candidate SpCell configuration is indicated as an incremental configuration relative to a reference SpCell configuration indicated by the candidate SpCell configuration in the one or more SpCell configurations.

[0170] In the seventh aspect, alone or in combination with one or more of the first to sixth aspects, at least one of the one or more candidate cell group configurations includes at least one of a complete candidate SpCell configuration or a complete candidate SCell configuration.

[0171] In the eighth aspect, alone or in combination with one or more of the first to seventh aspects, at least one of the one or more candidate cell group configurations includes an indication that the one or more reference SpCell configurations or the at least one of the zero or more reference SCell configurations is associated with the one or more incremental configurations.

[0172] In a ninth aspect, alone or in combination with one or more of aspects one to eight, process 1000 comprises: sending an indication of a plurality of reference LTM configurations to the UE, wherein the reference LTM configuration is a selected reference LTM configuration from the plurality of reference LTM configurations; and sending an indication to the UE that the reference LTM configuration is selected from the plurality of reference LTM configurations for preparing the one or more incremental configurations.

[0173] 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.

[0174] Figure 11 is a diagram illustrating an example process 1100, for example, performed by a first network node, in accordance with the present disclosure. The example process 1100 is an example in which the first network node (eg, network node 110) performs operations associated with incremental configuration for an LTM.

[0175] like Figure 11 As shown, in some aspects, process 1100 may include receiving an indication of a reference LTM configuration from a second network node (block 1110). For example, the first network node (e.g., using Figure 15 The receiving component 1502 and / or the communication manager 1506 depicted in FIG. 15 ) can receive an indication of a reference LTM configuration from a second network node, as described above.

[0176] like Figure 11 As further shown, in some aspects, process 1100 may include identifying one or more candidate cell configurations associated with one or more candidate cells for an LTM process based at least in part on the reference LTM configuration (block 1120). Figure 15 The communications manager 1506 depicted in FIG. 15 may identify one or more candidate cell configurations associated with one or more candidate cells for an LTM process based at least in part on the reference LTM configuration, as described above.

[0177] like Figure 11 As further shown, in some aspects, process 1100 may include sending an indication of the one or more candidate cell configurations to the second network node (block 1130). For example, the first network node (e.g., using Figure 15The sending component 1504 and / or the communication manager 1506 depicted in FIG. 15 ) may send an indication of the one or more candidate cell configurations to the second network node, as described above.

[0178] Process 1100 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.

[0179] In a first aspect, the first network node is a distributed unit of a network entity and the second network node is a centralized unit of a network entity.

[0180] In a second aspect, alone or in combination with the first aspect, process 1100 includes receiving, from the second network node, an indication of source cell information associated with a source cell of the UE, wherein identifying the one or more candidate cell configurations is further based at least in part on the source cell information.

[0181] In a third aspect, alone or in combination with one or more of the first and second aspects, the one or more candidate cell configurations are associated with a candidate cell group configuration.

[0182] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the one or more candidate cell configurations are associated with one or more delta configurations relative to the reference LTM configuration.

[0183] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the process 1100 includes sending an indication to the second network node that the one or more candidate cell configurations are associated with the one or more incremental configurations.

[0184] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, process 1100 comprises: receiving an indication of a plurality of reference LTM configurations from the second network node, wherein the reference LTM configuration is a selected reference LTM configuration from the plurality of reference LTM configurations; and sending an indication to the second network node that the reference LTM configuration is selected from the plurality of reference LTM configurations for preparing the one or more incremental configurations.

[0185] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, the one or more candidate cell configurations are associated with one or more complete configurations.

[0186] In an eighth aspect, alone or in combination with one or more of the first to seventh aspects, the process 1100 includes sending an indication to the second network node that the one or more candidate cell configurations are associated with the one or more complete configurations.

[0187] although Figure 11 Example blocks of process 1100 are shown, but in some aspects, process 1100 may include Figure 11 1100. In some embodiments, the process 1100 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 1100 may be executed in parallel.

[0188] Figure 12 is a diagram illustrating an example process 1200, performed, for example, by a first network node, in accordance with the present disclosure. The example process 1200 is an example in which the first network node (eg, network node 110) performs operations associated with incremental configuration for an LTM.

[0189] like Figure 12 As shown, in some aspects, process 1200 may include receiving an indication of one or more candidate cell configurations associated with one or more candidate cells for an LTM process from a second network node (block 1210). Figure 15 The receiving component 1502 and / or the communication manager 1506 depicted in FIG. 15 may receive, from the second network node, an indication of one or more candidate cell configurations associated with one or more candidate cells for the LTM process, as described above.

[0190] like Figure 12 As further shown, in some aspects, process 1200 may include identifying one or more delta configurations for the one or more candidate cells relative to the reference LTM configuration based at least in part on the one or more candidate cell configurations and the reference LTM configuration (block 1220). Figure 15 The communications manager 1506 depicted in FIG. 15 may identify one or more delta configurations for the one or more candidate cells relative to the reference LTM configuration based at least in part on the one or more candidate cell configurations and the reference LTM configuration, as described above.

[0191] like Figure 12 As further shown, in some aspects, process 1200 may include sending an indication of the one or more incremental configurations to the UE (block 1230). For example, the first network node (e.g., using Figure 15 The transmitting component 1504 and / or the communication manager 1506 depicted in can send an indication of the one or more incremental configurations to the UE, as described above.

[0192] Process 1200 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.

[0193] In a first aspect, the first network node is a centralized unit of a network entity and the second network node is a distributed unit of a network entity.

[0194] In a second aspect, alone or in combination with the first aspect, the one or more candidate cell configurations are associated with a candidate cell group configuration.

[0195] In a third aspect, alone or in combination with one or more of the first and second aspects, the one or more incremental configurations are associated with a candidate cell group configuration.

[0196] In a fourth aspect, alone or in combination with one or more of the first to third aspects, process 1200 includes: sending an indication to the second network node that the one or more candidate cell configurations are to be provided as complete configurations; and receiving one or more complete configurations for the one or more candidate cells from the second network node based at least in part on the indication that the one or more candidate cell configurations are to be provided as complete configurations.

[0197] although Figure 12 Example blocks of process 1200 are shown, but in some aspects, process 1200 may include Figure 12 1200. In some embodiments, the process 1200 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 1200 may be executed in parallel.

[0198] Figure 13 1 is a diagram illustrating an example process 1300 performed, for example, at a first network node or an apparatus of the first network node in accordance with the present disclosure. Example process 1300 is an example of operations in which the apparatus or the first network node (e.g., network node 110 and / or CU 805) performs incremental configuration for layer 1 / layer 2 triggered mobility.

[0199] like Figure 13 As shown, in some aspects, process 1300 may include sending an indication of a reference LTM configuration to a second network node (block 1310). For example, the first network node (e.g., using Figure 15 The sending component 1504 and / or the communication manager 1506 depicted in FIG. 15 ) can send an indication of the reference LTM configuration to the second network node, as described above.

[0200] like Figure 13As further shown, in some aspects, process 1300 may include receiving, from the second network node, an indication of one or more candidate cell configurations associated with one or more candidate cells for the LTM process, wherein the one or more candidate cell configurations are based at least in part on the reference LTM configuration (block 1320). Figure 15 The receiving component 1502 and / or the communication manager 1506 depicted in may receive, from the second network node, an indication of one or more candidate cell configurations associated with one or more candidate cells for the LTM process, wherein the one or more candidate cell configurations are based at least in part on the reference LTM configuration, as described above.

[0201] Process 1300 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.

[0202] In a first aspect, the second network node is a distributed unit of a network entity and the first network node is a centralized unit of a network entity.

[0203] In a second aspect, alone or in combination with the first aspect, process 1300 further includes sending an indication of source cell information associated with a source cell of the UE to the second network node, wherein the one or more candidate cell configurations are further based at least in part on the source cell information.

[0204] In a third aspect, alone or in combination with one or more of the first and second aspects, the one or more candidate cell configurations are associated with a candidate cell group configuration.

[0205] In a fourth aspect, alone or in combination with one or more of the first to third aspects, the one or more candidate cell configurations are associated with one or more delta configurations relative to the reference LTM configuration.

[0206] In a fifth aspect, alone or in combination with one or more of the first to fourth aspects, the process 1300 further includes receiving an indication from the second network node that the one or more candidate cell configurations are associated with the one or more incremental configurations.

[0207] In a sixth aspect, alone or in combination with one or more of the first to fifth aspects, the one or more candidate cell configurations are associated with one or more complete configurations.

[0208] In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, the process 1300 further comprises receiving an indication from the second network node that the one or more candidate cell configurations are associated with the one or more complete configurations.

[0209] although Figure 13 Example blocks of process 1300 are shown, but in some aspects, process 1300 may include Figure 13 1300. In some embodiments, the process 1300 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 1300 may be executed in parallel.

[0210] Figure 14 1 is a diagram of an example apparatus 1400 for wireless communication according to the present disclosure. Apparatus 1400 may be a UE, or a UE may include apparatus 1400. In some aspects, apparatus 1400 includes a receiving component 1402, a sending component 1404, and / or a communication manager 1406, 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 1406 is a communication manager that is configured to communicate with one another. Figure 1 The communication manager 140 is depicted. As shown, the apparatus 1400 can utilize a receiving component 1402 and a sending component 1404 to communicate with another apparatus 1408, such as a UE or a network node such as a CU, DU, RU, or base station.

[0211] In some aspects, the apparatus 1400 may be configured to perform Figures 7 to 8B Additionally or alternatively, the apparatus 1400 may be configured to perform one or more of the processes described herein, such as Figure 9 The process 900. In some aspects, Figure 14 The device 1400 and / or one or more components shown may include a combination of Figure 2 One or more components of the described UE 120. Additionally or alternatively, Figure 14 One or more of the components shown may be combined Figure 2 Additionally 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 can be executed by a controller or processor to perform the function or operation of the component.

[0212] The receiving component 1402 may receive communications, such as reference signals, control information, data communications, or a combination thereof, from the device 1408. The receiving component 1402 may provide the received communications to one or more other components of the device 1400. In some aspects, the receiving component 1402 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 1400. In some aspects, the receiving component 1402 may include processing the received communications in conjunction with Figure 2 The depicted UE 120 may include one or more antennas, modems, demodulators, MIMO detectors, receive processors, controllers / processors, memories, or combinations thereof.

[0213] The transmitting component 1404 may transmit communications, such as reference signals, control information, data communications, or a combination thereof, to the apparatus 1408. In some aspects, one or more other components of the apparatus 1400 may generate communications and may provide the generated communications to the transmitting component 1404 for transmission to the apparatus 1408. In some aspects, the transmitting component 1404 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 apparatus 1408. In some aspects, the transmitting component 1404 may include a combination of Figure 2 One or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof, of the depicted UE 120. In some aspects, the transmit component 1404 can be co-located with the receive component 1402 in a transceiver.

[0214] The communications manager 1406 can support the operation of the receiving component 1402 and / or the sending component 1404. For example, the communications manager 1406 can receive information associated with configuring the receipt of communications by the receiving component 1402 and / or the sending of communications by the sending component 1404. Additionally or alternatively, the communications manager 1406 can generate and / or provide control information to the receiving component 1402 and / or the sending component 1404 to control the receipt and / or sending of communications.

[0215] Receiving component 1402 may receive a reference LTM configuration indicating one or more reference SpCell configurations and zero or more reference SCell configurations. Receiving component 1402 may receive one or more candidate cell group configurations, each of the one or more candidate cell group configurations indicating one or more delta configurations relative to at least one of the one or more reference SpCell configurations or the zero or more reference SCell configurations. Communications manager 1406 may execute an LTM process associated with a selected candidate cell group configuration from the one or more candidate cell group configurations.

[0216] Receiving component 1402 can receive an indication of a plurality of reference LTM configurations, wherein the reference LTM configuration is a selected reference LTM configuration from the plurality of reference LTM configurations, and receive an indication that the reference LTM configuration is selected from the plurality of reference LTM configurations for preparing the one or more incremental configurations.

[0217] Figure 14 The number and arrangement of components shown are provided as examples. In practice, there may be Figure 14 The components shown may include additional components, fewer components, different components, or components arranged in a different manner than those shown. Figure 14 Two or more components shown may be implemented in a single component, or Figure 14 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Figure 14 The illustrated set (one or more) of components executable is described as being comprised of Figure 14 Another group of components is shown performing one or more functions.

[0218] Figure 15 1 is a diagram of an example apparatus 1500 for wireless communication according to the present disclosure. Apparatus 1500 may be a network node, or a network node may include apparatus 1500. In some aspects, apparatus 1500 includes a receiving component 1502, a sending component 1504, and / or a communication manager 1506, 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 1506 is a communication manager that is configured to communicate with one another. Figure 1 The communication manager 150 is depicted. As shown, the apparatus 1500 can utilize a receiving component 1502 and a sending component 1504 to communicate with another apparatus 1508, such as a UE or a network node such as a CU, DU, RU, or base station.

[0219] In some aspects, the apparatus 1500 may be configured to perform Figures 7 to 8BAdditionally or alternatively, the apparatus 1500 may be configured to perform one or more of the processes described herein, such as Figure 10 The process of 1000 Figure 11 Process 1100, Figure 12 In some aspects, Figure 15 The illustrated apparatus 1500 and / or one or more components may include a combination of Figure 2 One or more components of the described network node 110. Additionally or alternatively, Figure 15 One or more of the components shown may be combined Figure 2 Additionally 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 can be executed by a controller or processor to perform the function or operation of the component.

[0220] The receiving component 1502 may receive communications, such as reference signals, control information, data communications, or a combination thereof, from the apparatus 1508. The receiving component 1502 may provide the received communications to one or more other components of the apparatus 1500. In some aspects, the receiving component 1502 may perform signal processing (such as filtering, amplification, demodulation, analog-to-digital conversion, demultiplexing, deinterleaving, demapping, equalization, interference cancellation, or decoding, etc.) on the received communications and may provide the processed signals to one or more other components of the apparatus 1500. In some aspects, the receiving component 1502 may include processing the received communications 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 node 110. In some aspects, the receiving component 1502 and / or the transmitting component 1504 may comprise or be included in a network interface. The network interface may be configured to obtain and / or output signals for the apparatus 1500 via one or more communication links (such as a backhaul link, a midhaul link, and / or a fronthaul link).

[0221] Transmit component 1504 may transmit communications, such as reference signals, control information, data communications, or a combination thereof, to device 1508. In some aspects, one or more other components of device 1500 may generate communications and may provide the generated communications to transmit component 1504 for transmission to device 1508. In some aspects, transmit component 1504 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 device 1508. In some aspects, transmit component 1504 may include in conjunction with Figure 2 One or more antennas, modems, modulators, transmit MIMO processors, transmit processors, controllers / processors, memories, or combinations thereof, of the depicted network node 110. In some aspects, the transmitting component 1504 can be co-located with the receiving component 1502 in a transceiver.

[0222] The communications manager 1506 can support the operation of the receiving component 1502 and / or the sending component 1504. For example, the communications manager 1506 can receive information associated with configuring the receipt of communications by the receiving component 1502 and / or the sending of communications by the sending component 1504. Additionally or alternatively, the communications manager 1506 can generate and / or provide control information to the receiving component 1502 and / or the sending component 1504 to control the receipt and / or sending of communications.

[0223] The transmitting component 1504 may transmit a reference LTM configuration indicating one or more reference SpCell configurations and zero or more reference SCell configurations to the UE. The transmitting component 1504 may transmit one or more candidate cell group configurations to the UE, each of the one or more candidate cell group configurations indicating one or more delta configurations relative to at least one of the one or more reference SpCell configurations or the zero or more reference SCell configurations. The communication manager 1506 may trigger, at the UE, an LTM process associated with a selected candidate cell group configuration from the one or more candidate cell group configurations.

[0224] The sending component 1504 may send an indication of multiple reference LTM configurations to the UE, wherein the reference LTM configuration is a selected reference LTM configuration from the multiple reference LTM configurations, and send an indication to the UE that the reference LTM configuration is selected from the multiple reference LTM configurations for preparing the one or more incremental configurations.

[0225] Receiving component 1502 can receive an indication of a reference LTM configuration from a second network node. Communications manager 1506 can identify one or more candidate cell configurations associated with one or more candidate cells for an LTM process based at least in part on the reference LTM configuration. Transmitting component 1504 can transmit an indication of the one or more candidate cell configurations to the second network node.

[0226] Receiving component 1502 can receive, from the second network node, an indication of source cell information associated with a source cell of the UE, wherein identifying the one or more candidate cell configurations is further based at least in part on the source cell information.

[0227] Transmitting component 1504 may transmit an indication to the second network node that the one or more candidate cell configurations are associated with the one or more incremental configurations.

[0228] Receiving component 1502 can receive an indication of a plurality of reference LTM configurations from the second network node, wherein the reference LTM configuration is a selected reference LTM configuration of the plurality of reference LTM configurations.

[0229] Transmitting component 1504 can transmit, to the second network node, an indication that the reference LTM configuration was selected from the plurality of reference LTM configurations for use in preparing the one or more delta configurations.

[0230] Transmitting component 1504 may transmit, to the second network node, an indication that the one or more candidate cell configurations are associated with the one or more complete configurations.

[0231] Receiving component 1502 can receive, from a second network node, an indication of one or more candidate cell configurations associated with one or more candidate cells for an LTM process. Communications manager 1506 can identify, based at least in part on the one or more candidate cell configurations and a reference LTM configuration, one or more delta configurations for the one or more candidate cells relative to the reference LTM configuration. Transmitting component 1504 can transmit an indication of the one or more delta configurations to a UE.

[0232] Transmitting component 1504 may transmit an indication to the second network node that the one or more candidate cell configurations are to be provided as a complete configuration.

[0233] Receiving component 1502 can receive, from the second network node, one or more complete configurations for the one or more candidate cells based at least in part on the indication that the one or more candidate cell configurations are to be provided as complete configurations.

[0234] Figure 15 The number and arrangement of components shown are provided as examples. In practice, there may be Figure 15 The components shown may include additional components, fewer components, different components, or components arranged in a different manner than those shown. Figure 15 Two or more components shown may be implemented in a single component, or Figure 15 The single component shown may be implemented as multiple distributed components. Additionally or alternatively, Figure 15 The illustrated set (one or more) of components executable is described as being comprised of Figure 15 Another group of components is shown performing one or more functions.

[0235] The following provides an overview of some aspects of the disclosure:

[0236] Aspect 1: A method of wireless communication performed by a UE, the method comprising: receiving a reference LTM configuration indicating one or more reference SpCell configurations and zero or more reference SCell configurations; receiving one or more candidate cell group configurations, each of the one or more candidate cell group configurations indicating one or more incremental configurations relative to the one or more reference SpCell configurations or at least one of the zero or more reference SCell configurations; and performing an LTM process associated with a selected candidate cell group configuration from the one or more candidate cell group configurations.

[0237] Aspect 2: The method according to aspect 1, wherein the selected candidate cell group configuration is associated with a candidate SpCell configuration, and wherein the candidate SpCell configuration is indicated as a delta configuration relative to a reference SpCell configuration in the one or more reference SpCell configurations.

[0238] Aspect 3: The method according to any one of aspects 1 to 2, wherein the reference LTM configuration indicates a reference SCell configuration, wherein the selected candidate cell group configuration indicates a candidate SCell configuration, and wherein the candidate SCell configuration is indicated as an incremental configuration relative to the reference SCell configuration.

[0239] Aspect 4: A method according to any one of Aspects 1 to 3, wherein the reference LTM configuration indicates one or more reference SCell configurations, each reference SCell configuration is associated with a corresponding SCell index, wherein the selected candidate cell group configuration indicates one or more candidate SCell configurations, each candidate SCell configuration is associated with a corresponding SCell index, and wherein each of the one or more candidate SCell configurations is indicated as an incremental configuration relative to the reference SCell configuration associated with the same corresponding SCell index as the candidate SCell configuration.

[0240] Aspect 5: A method according to any one of Aspects 1 to 4, wherein the reference LTM configuration indicates one or more reference SCell configurations, wherein the selected candidate cell group configuration indicates a candidate SpCell configuration, and wherein the candidate SpCell configuration is indicated as an incremental configuration relative to the reference SCell configuration in the one or more reference SCell configurations.

[0241] Aspect 6: A method according to any one of Aspects 1 to 5, wherein the selected candidate cell group configuration indicates one or more candidate SCell configurations, and wherein each of the one or more candidate SCell configurations is indicated as an incremental configuration relative to a reference SpCell configuration in the one or more reference SpCell configurations.

[0242] Aspect 7: A method according to any one of Aspects 1 to 6, wherein the selected candidate cell group configuration indicates a candidate SpCell configuration, and wherein the candidate SpCell configuration is indicated as an incremental configuration relative to a reference SpCell configuration indicated by the candidate SpCell configuration in the one or more SpCell configurations.

[0243] Aspect 8: The method according to any one of aspects 1 to 7, wherein at least one of the one or more candidate cell group configurations includes at least one of a complete candidate SpCell configuration or a complete candidate SCell configuration.

[0244] Aspect 9: A method according to any one of Aspects 1 to 8, wherein at least one of the one or more candidate cell group configurations includes an indication that the one or more reference SpCell configurations or at least one of the zero or more reference SCell configurations is associated with the one or more incremental configurations.

[0245] Aspect 10: The method according to any one of Aspects 1 to 9, further comprising: receiving an indication of a plurality of reference LTM configurations, wherein the reference LTM configuration is a selected reference LTM configuration from the plurality of reference LTM configurations; and receiving an indication that the reference LTM configuration is selected from the plurality of reference LTM configurations for preparing the one or more incremental configurations.

[0246] Aspect 11: A method of wireless communication performed by a network node, the method comprising: sending a reference LTM configuration indicating one or more reference SpCell configurations and zero or more reference SCell configurations to a UE; sending one or more candidate cell group configurations to the UE, each of the one or more candidate cell group configurations indicating one or more incremental configurations relative to the one or more reference SpCell configurations or at least one of the zero or more reference SCell configurations; and triggering an LTM process associated with a selected candidate cell group configuration from the one or more candidate cell group configurations at the UE.

[0247] Aspect 12: The method according to aspect 11, wherein the selected candidate cell group configuration is associated with a candidate SpCell configuration, and wherein the candidate SpCell configuration is indicated as a delta configuration relative to a reference SpCell configuration in the one or more reference SpCell configurations.

[0248] Aspect 13: The method according to any one of aspects 11 to 12, wherein the reference LTM configuration indicates a reference SCell configuration, wherein the selected candidate cell group configuration indicates a candidate SCell configuration, and wherein the candidate SCell configuration is indicated as a delta configuration relative to the reference SCell configuration.

[0249] Aspect 14: A method according to any one of Aspects 11 to 13, wherein the reference LTM configuration indicates one or more reference SCell configurations, each reference SCell configuration is associated with a corresponding SCell index, wherein the selected candidate cell group configuration indicates one or more candidate SCell configurations, each candidate SCell configuration is associated with a corresponding SCell index, and wherein each of the one or more candidate SCell configurations is indicated as an incremental configuration relative to the reference SCell configuration associated with the same corresponding SCell index as the candidate SCell configuration.

[0250] Aspect 15: A method according to any one of Aspects 11 to 14, wherein the reference LTM configuration indicates one or more reference SCell configurations, wherein the selected candidate cell group configuration indicates a candidate SpCell configuration, and wherein the candidate SpCell configuration is indicated as an incremental configuration relative to the reference SCell configuration in the one or more reference SCell configurations.

[0251] Aspect 16: A method according to any one of Aspects 11 to 15, wherein the selected candidate cell group configuration indicates one or more candidate SCell configurations, and wherein each of the one or more candidate SCell configurations is indicated as an incremental configuration relative to a reference SpCell configuration in the one or more reference SpCell configurations.

[0252] Aspect 17: A method according to any one of Aspects 11 to 16, wherein the selected candidate cell group configuration indicates a candidate SpCell configuration, and wherein the candidate SpCell configuration is indicated as an incremental configuration relative to a reference SpCell configuration indicated by the candidate SpCell configuration in the one or more SpCell configurations.

[0253] Aspect 18: The method according to any one of aspects 11 to 17, wherein at least one of the one or more candidate cell group configurations comprises at least one of a complete candidate SpCell configuration or a complete candidate SCell configuration.

[0254] Aspect 19: A method according to any one of Aspects 11 to 18, wherein at least one of the one or more candidate cell group configurations includes an indication that the one or more reference SpCell configurations or at least one of the zero or more reference SCell configurations is associated with the one or more incremental configurations.

[0255] Aspect 20: The method according to any one of Aspects 11 to 19, further comprising: sending an indication of multiple reference LTM configurations to the UE, wherein the reference LTM configuration is a selected reference LTM configuration from the multiple reference LTM configurations; and sending an indication to the UE that the reference LTM configuration is selected from multiple reference LTM configurations for preparing the one or more incremental configurations.

[0256] Aspect 21: A method of wireless communication performed by a first network node, the method comprising: receiving an indication of a reference LTM configuration from a second network node; identifying one or more candidate cell configurations associated with one or more candidate cells for an LTM process based at least in part on the reference LTM configuration; and sending an indication of the one or more candidate cell configurations to the second network node.

[0257] Aspect 22: The method according to aspect 21, wherein the first network node is a distributed unit of a network entity, and wherein the second network node is a centralized unit of a network entity.

[0258] Aspect 23: The method according to any one of aspects 21 to 22 further includes receiving an indication of source cell information associated with the source cell of the UE from the second network node, wherein identifying the one or more candidate cell configurations is also at least partially based on the source cell information.

[0259] Aspect 24: The method according to any one of aspects 21 to 23, wherein the one or more candidate cell configurations are associated with a candidate cell group configuration.

[0260] Aspect 25: The method according to any one of aspects 21 to 24, wherein the one or more candidate cell configurations are associated with one or more delta configurations relative to the reference LTM configuration.

[0261] Aspect 26: The method according to aspect 25, further comprising: sending an indication to the second network node that the one or more candidate cell configurations are associated with the one or more incremental configurations.

[0262] Aspect 27: According to the method according to Aspect 25, the method also includes: receiving an indication of multiple reference LTM configurations from the second network node, wherein the reference LTM configuration is a selected reference LTM configuration from the multiple reference LTM configurations; and sending an indication to the second network node that the reference LTM configuration is selected from the multiple reference LTM configurations for preparing the one or more incremental configurations.

[0263] Aspect 28: The method according to any one of aspects 21 to 27, wherein the one or more candidate cell configurations are associated with one or more complete configurations.

[0264] Aspect 29: The method according to aspect 28, further comprising: sending an indication to the second network node that the one or more candidate cell configurations are associated with the one or more complete configurations.

[0265] Aspect 30: A method of wireless communication performed by a first network node, the method comprising: receiving an indication of one or more candidate cell configurations associated with one or more candidate cells for an LTM process from a second network node; identifying one or more incremental configurations for the one or more candidate cells relative to the reference LTM configuration based at least in part on the one or more candidate cell configurations and a reference LTM configuration; and sending an indication of the one or more incremental configurations to a UE.

[0266] Aspect 31: The method according to aspect 30, wherein the first network node is a centralized unit of a network entity, and wherein the second network node is a distributed unit of a network entity.

[0267] Aspect 32: The method according to any one of aspects 30 to 31, wherein the one or more candidate cell configurations are associated with a candidate cell group configuration.

[0268] Aspect 33: The method according to any one of aspects 30 to 32, wherein the one or more incremental configurations are associated with a candidate cell group configuration.

[0269] Aspect 34: The method according to any one of Aspects 30 to 33, the method further comprising: sending an indication to the second network node that the one or more candidate cell configurations are to be provided as complete configurations; and receiving one or more complete configurations for the one or more candidate cells from the second network node based at least in part on the indication that the one or more candidate cell configurations are to be provided as complete configurations.

[0270] Aspect 35: A method of wireless communication performed by a first network node, the method comprising: sending an indication of a reference layer 1 / layer 2 triggered mobility (LTM) configuration to a second network node; and receiving an indication of one or more candidate cell configurations associated with one or more candidate cells for an LTM process from the second network node, wherein the one or more candidate cell configurations are at least partially based on the reference LTM configuration.

[0271] Aspect 36: The method according to aspect 35, wherein the second network node is a distributed unit of a network entity, and wherein the first network node is a centralized unit of a network entity.

[0272] Aspect 37: The method according to any one of aspects 35 to 36, the method further comprising sending an indication of source cell information associated with a source cell of a user equipment (UE) to the second network node, wherein the one or more candidate cell configurations are also based at least in part on the source cell information.

[0273] Aspect 38: A method according to any one of aspects 35 to 37, wherein the one or more candidate cell configurations are associated with a candidate cell group configuration.

[0274] Aspect 39: A method according to any one of aspects 35 to 38, wherein the one or more candidate cell configurations are associated with one or more delta configurations relative to the reference LTM configuration.

[0275] Aspect 40: The method according to aspect 39, further comprising: receiving an indication from the second network node that the one or more candidate cell configurations are associated with the one or more incremental configurations.

[0276] Aspect 41: The method according to any one of aspects 35 to 38, wherein the one or more candidate cell configurations are associated with one or more complete configurations.

[0277] Aspect 42: The method of aspect 41, wherein the one or more processors are further configured to receive an indication from the second network node that the one or more candidate cell configurations are associated with the one or more complete configurations.

[0278] Aspect 43: 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 42.

[0279] Aspect 44: An apparatus for wireless communication, the apparatus 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 42.

[0280] Aspect 45: 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 42.

[0281] Aspect 46: 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 42.

[0282] Aspect 47: 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 42.

[0283] 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.

[0284] As used herein, the term "component" is intended to be broadly interpreted as a combination of hardware and / or hardware and software. Whether referred to as software, firmware, middleware, microcode, hardware description language or other names, "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, executable files, threads of execution, processes and / or functions, etc. As used herein, a "processor" is implemented in a combination of hardware and / or hardware and software. It will be apparent that the systems and / or methods described herein can be implemented by a combination of different forms of hardware and / or 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, no reference is made herein to specific software code to describe the operation and behavior of the systems and / or methods, as those skilled in the art will appreciate that software and hardware can be designed to implement the systems and / or methods based at least in part on the description herein.

[0285] 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.

[0286] Although specific combinations of features are recited in the claims and / or disclosed in the specification, these combinations are not intended to limit the disclosure of the various aspects. Many of these features may be combined in ways not specifically recited in the claims and / or disclosed in the specification. The disclosure of the various aspects includes each dependent claim in conjunction with every other claim in the claim set. As used herein, a phrase referring to “at least one of” a list of items refers to any combination of those items (including single members). By way of 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 multiples of the same element (e.g., a+a, a+a+a, a+a+b, a+a+c, a+b+b, a+c+c, b+b, b+b+b, b+b+c, c+c, and c+c+c, or any other ordering of a, b, and c).

[0287] 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 one project is intended to be referred to, the phrase "only one" or similar terms are used. In addition, as used herein, the terms "have", "have", "have" etc. are intended to be open terms that do not limit the elements they modify (for example, an element "having" 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 first network node for wireless communication, the first network node comprising: Memory; and one or more processors coupled to the memory and configured to: receiving an indication of a reference layer 1 / layer 2 triggered mobility (LTM) configuration from a second network node; identifying one or more candidate cell configurations associated with one or more candidate cells for an LTM process based at least in part on the reference LTM configuration; as well as An indication of the one or more candidate cell configurations is sent to the second network node. 2 . The first network node according to claim 1 , wherein the first network node is a distributed unit of a network entity, and wherein the second network node is a centralized unit of a network entity.

3. The first network node of claim 1 , wherein the one or more processors are further configured to receive, from the second network node, an indication of source cell information associated with a source cell of a user equipment (UE), wherein identifying the one or more candidate cell configurations is further based at least in part on the source cell information. The first network node according to claim 1 , wherein the one or more candidate cell configurations are associated with a candidate cell group configuration. 5 . The first network node of claim 1 , wherein the one or more candidate cell configurations are associated with one or more delta configurations relative to the reference LTM configuration.

6. The first network node of claim 5, wherein the one or more processors are further configured to send an indication to the second network node that the one or more candidate cell configurations are associated with the one or more delta configurations.

7. The first network node of claim 1, wherein the one or more candidate cell configurations are associated with one or more complete configurations.

8. The first network node of claim 7, wherein the one or more processors are further configured to send an indication to the second network node that the one or more candidate cell configurations are associated with the one or more complete configurations.

9. A first network node for wireless communication, the first network node comprising: Memory; and one or more processors coupled to the memory and configured to: sending an indication of a reference layer 1 / layer 2 triggered mobility (LTM) configuration to the second network node; as well as An indication of one or more candidate cell configurations associated with one or more candidate cells for an LTM procedure is received from the second network node, wherein the one or more candidate cell configurations are based at least in part on the reference LTM configuration.

10. The first network node according to claim 9, wherein the second network node is a distributed unit of a network entity, and wherein the first network node is a centralized unit of a network entity.

11. The first network node of claim 9, wherein the one or more processors are further configured to send an indication of source cell information associated with a source cell of a user equipment (UE) to the second network node, wherein the one or more candidate cell configurations are further based at least in part on the source cell information.

12. The first network node of claim 9, wherein the one or more candidate cell configurations are associated with a candidate cell group configuration.

13. The first network node of claim 9, wherein the one or more candidate cell configurations are associated with one or more delta configurations relative to the reference LTM configuration.

14. The first network node of claim 13, wherein the one or more processors are further configured to receive an indication from the second network node that the one or more candidate cell configurations are associated with the one or more delta configurations.

15. The first network node of claim 9, wherein the one or more candidate cell configurations are associated with one or more complete configurations.

16. The first network node of claim 15, wherein the one or more processors are further configured to receive an indication from the second network node that the one or more candidate cell configurations are associated with the one or more complete configurations.

17. A method of wireless communication performed by a first network node, the method comprising: receiving an indication of a reference layer 1 / layer 2 triggered mobility (LTM) configuration from a second network node; identifying one or more candidate cell configurations associated with one or more candidate cells for an LTM process based at least in part on the reference LTM configuration; as well as An indication of the one or more candidate cell configurations is sent to the second network node. The method of claim 17 , wherein the one or more candidate cell configurations are associated with a candidate cell group configuration.

19. The method of claim 17, wherein the one or more candidate cell configurations are associated with one or more delta configurations relative to the reference LTM configuration.

20. The method of claim 17, wherein the one or more candidate cell configurations are associated with one or more complete configurations.

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