User equipment triggered L1 measurement and reporting for L1 / L2 inter-cell mobility

Abstract

Techniques relating to user equipment triggered Layer 1 measurements for inter-cell mobility are disclosed. Some aspects of the present disclosure relate to devices and methods for determining, at a user equipment, a first condition for performing one or more Layer 1 signal measurements for inter-cell mobility triggering; performing the one or more L1 signal measurements for one or more cells in the configured set of cells of the user equipment based on determining that the first condition is triggered; and transmitting a report of the one or more L1 signal measurements to a network node.

Description

[0001] This application claims priority to U.S. Patent Application No. 18 / 459,512, filed on September 1, 2023, which claims the benefit of U.S. Provisional Patent Application No. 63 / 378,720, filed on October 7, 2022; U.S. Patent Application No. 18 / 459,512, filed on September 1, 2023, claims the benefit of U.S. Provisional Patent Application No. 63 / 378,720, filed on October 7, 2022, and the entire content of each application is incorporated herein by reference. Technical Field

[0002] The present disclosure generally relates to wireless communication systems and, more particularly, to techniques for triggering layer 1 (L1) signal measurements for inter-cell mobility at a user equipment (UE). Background Art

[0003] As the demand for mobile broadband access continues to increase, research and development continue to improve wireless communication technologies, not only to meet the growing demand for mobile broadband access, but also to improve and enhance the user experience of mobile communications. Summary of the Invention

[0004] To provide a basic understanding of one or more aspects of the present disclosure, an overview of such aspects is given below. This overview is not an extensive review of all the expected features of the present disclosure and is neither intended to identify the key or important elements of all aspects of the present disclosure nor to depict the scope of any or all aspects of the present disclosure. Its sole purpose is to present some concepts of one or more aspects of the present disclosure in a simplified form as a prelude to the more detailed description that follows. While some examples may be discussed as including certain aspects or features, all the examples discussed may include any of the features discussed. And unless explicitly described, no aspect or feature is necessary for achieving the technical effects or solutions discussed herein.

[0005] Generally speaking, the present disclosure describes techniques for performing inter-cell mobility procedures between a user equipment (UE) and a network node. In particular, the present disclosure describes devices and techniques for updating a serving cell (e.g., a special cell SpCell) through which the UE communicates with the network node, where the update is performed through layer 1 (L1) or layer 2 (L2) signaling from the network node to the UE. The network node may configure a set of cells (e.g., a configured set of cells), which includes a subset of active cells through which the UE and the network node perform data and control communication. The network node may designate one of these active cells as the serving cell. Those cells in the configured set of cells that are not in the set of active cells are in the set of deactivated cells.

[0006] The network node may both periodically update the serving cell within the set of active cells and update which cells in the set of configured cells are part of the set of active cells. That is, the network node may change which cell in the set of active cells is the serving cell. The network node may also move one or more cells from the set of active cells to the set of deactivated cells, and vice versa. As part of making the determination for the serving cell update and / or the update of the set of active cells, the network node may receive L1 signal measurements of one or more of these cells in the set of configured cells from the UE. That is, the UE may be configured to perform L1 signal measurements on both active and deactivated cells and transmit a report of the L1 signal measurements to the network node. The signal measurements may include signal-to-interference-plus-noise ratio (SINR) measurements and / or reference signal received power (RSRP) measurements. The UE may be configured to transmit the report to the network node via a downlink control information (DCI) signal (e.g., L1 signaling) or via a media access control (MAC) control element (CE) signal (e.g., L2 signaling).

[0007] According to the techniques of the present disclosure, the UE may be configured with one or more conditions that allow the UE to trigger L1 signal measurements of these cells in the set of configured cells without a direct instruction from the network node. The conditions for triggering cell signal measurements may include one or more of UE mobility conditions, channel strength measurement conditions, and / or predicted blockage conditions. The network node may pre-configure the UE with the conditions for triggering cell signal measurements. Additionally, the network node may pre-configure the UE with one or more reporting configurations that indicate the reporting format for reporting the L1 signal measurements. The UE may be configured to determine a particular reporting configuration based on one or more conditions, which may be the same as or different from the conditions for triggering the L1 signal measurements. The network node may also pre-configure the resources (e.g., time, frequency, beam, etc.) through which the UE will send the report of the UE-triggered L1 signal measurements.

[0008] Compared to techniques in which the network node explicitly requests L1 signal measurements, by pre-configuring the UE with the conditions for triggering and reporting L1 signal measurements, the network node can receive such L1 signal measurements in a more timely manner. Thus, the techniques of the present disclosure may facilitate faster serving cell updates (e.g., SpCell updates) for L1 / L2 inter-cell mobility, and may facilitate faster beam management, timing synchronization, and power control.

[0009] In one example, the present disclosure describes a user equipment (UE) for wireless communication, the UE including a memory; and a processor communicatively coupled to the memory, the processor configured to: determine a first condition for triggering one or more layer 1 (L1) signal measurements for inter-cell mobility; perform the one or more L1 signal measurements for one or more cells in a configured set of cells for the UE based on determining that the first condition is triggered; and transmit a report of the one or more L1 signal measurements to a network node.

[0010] In another example, the present disclosure describes a method for wireless communication, the method including: determining, at a user equipment (UE), a first condition for triggering one or more layer 1 (L1) signal measurements for inter-cell mobility; performing the one or more L1 signal measurements for one or more cells in a configured set of cells for the UE based on determining that the first condition is triggered; and transmitting a report of the one or more L1 signal measurements to a network node.

[0011] In another example, the present disclosure describes an apparatus, including: means for determining, at a user equipment (UE), a first condition for triggering one or more layer 1 (L1) signal measurements for inter-cell mobility; means for performing the one or more L1 signal measurements for one or more cells in a configured set of cells for the UE based on determining that the first condition is triggered; and means for transmitting a report of the one or more L1 signal measurements to a network node.

[0012] In another example, the present disclosure describes a non-transitory computer-readable storage medium storing instructions that, when executed, cause one or more processors to: determine a first condition for triggering one or more layer 1 (L1) signal measurements for inter-cell mobility; perform the one or more L1 signal measurements for one or more cells in a configured set of cells for the UE based on determining that the first condition is triggered; and transmit a report of the one or more L1 signal measurements to a network node.

[0013] In another example, the present disclosure describes a network node for wireless communication, the network node including a memory; and a processor communicatively coupled to the memory, the processor configured to: transmit to a user equipment (UE) one or more conditions for triggering one or more layer 1 (L1) signal measurements for one or more cells in a configured set of cells for the UE for inter-cell mobility; receive from the UE a report of the one or more L1 signal measurements; and perform inter-cell mobility operations based on the one or more L1 signal measurements.

[0014] In another example, the present disclosure describes a method for wireless communication, the method comprising: transmitting to a user equipment (UE) one or more conditions for triggering one or more layer 1 (L1) signal measurements for one or more cells in a set of cells configured for the UE for inter-cell mobility; receiving, from the UE, a report of the one or more L1 signal measurements; and performing an inter-cell mobility operation based on the one or more L1 signal measurements.

[0015] In another example, the present disclosure describes an apparatus, comprising: means for transmitting to a user equipment (UE) one or more conditions for triggering one or more layer 1 (L1) signal measurements for one or more cells in a set of cells configured for the UE for inter-cell mobility; means for receiving, from the UE, a report of the one or more L1 signal measurements; and means for performing an inter-cell mobility operation based on the one or more L1 signal measurements.

[0016] In another example, the present disclosure describes a non-transitory computer-readable storage medium storing instructions that, when executed, cause one or more processors to: transmit to a user equipment (UE) one or more conditions for triggering one or more layer 1 (L1) signal measurements for one or more cells in a set of cells configured for the UE for inter-cell mobility; receive, from the UE, a report of the one or more L1 signal measurements; and perform an inter-cell mobility operation based on the one or more L1 signal measurements.

[0017] After reading the following detailed description, these and other aspects of the techniques discussed herein will be more fully appreciated. Other aspects and features will become apparent to those of ordinary skill in the art after reading the description of the specific examples in conjunction with the drawings. Although the following description may discuss various advantages and features with respect to certain examples, specific implementations, and drawings, all examples may include one or more of the advantageous features discussed herein. In other words, although the description may discuss one or more examples as having certain advantageous features, one or more such features may also be used in accordance with the various other examples discussed herein. In a similar manner, although the description may discuss certain examples as devices, systems, or methods, it should be understood that such examples of the teachings of the present disclosure may be implemented in a variety of devices, systems, and methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 is a schematic diagram of a wireless communication system in accordance with some aspects of the present disclosure.

[0019] Figure 2 is a conceptual diagram of an example of a radio access network in accordance with some aspects of the present disclosure.

[0020] Figure 3 is a conceptual diagram illustrating an example split base station architecture according to some aspects of the present disclosure.

[0021] Figure 4 is an illustration of a user plane protocol stack and a control plane protocol stack according to some aspects of the present disclosure.

[0022] Figure 5 is a schematic diagram of an OFDM waveform according to various aspects of the present disclosure.

[0023] Figure 6 is a schematic diagram of inter-cell mobility according to various aspects of the present disclosure.

[0024] Figure 7 is a block diagram conceptually illustrating an example of a hardware implementation of a network node according to some aspects of the present disclosure.

[0025] Figure 8 is a block diagram conceptually illustrating an example of a hardware implementation for a user equipment (UE) according to some aspects of the present disclosure.

[0026] Figure 9 is a flowchart illustrating an example of a process for UE-triggered L1 signal measurement for inter-cell mobility according to some aspects of the present disclosure.

[0027] Figure 10 is a flowchart illustrating an example of a process for configuring conditions for UE-triggered L1 signal measurement for inter-cell mobility according to some aspects of the present disclosure. DETAILED DESCRIPTION

[0028] In L1 / L2 inter-cell mobility, a network node may use L1 and / or L2 signaling to update the serving cell through which a UE communicates with the network node. L1 signaling may include a downlink control information (DCI) signal, and L2 signaling may include a media access control (MAC) control element (CE) signal. The network node may transmit L1 / L2 signaling to the UE through the current serving cell (e.g., a special cell (SpCell)). L1 / L2 inter-cell mobility may be contrasted with other forms of inter-cell mobility where the serving cell may use layer 3 radio resource control (RRC) signaling for updates. In some examples, the serving cell may be referred to as a candidate lower layer triggered mobility (LTM) cell.

[0029] The UE can be configured to communicate with a network node via one or more cells in a configured set of cells. In the context of the present disclosure, the term cell is a general term and can be considered as a radio unit (RU), radio head, Tx / Rx point (TRP), or physical cell ID (PCI). In some examples, the cells in the configured set of cells can be the same cell on different frequencies.

[0030] The network node can configure a set of cells that support L1 / L2 mobility via radio resource control (RRC) signaling to the UE. In this example, the cells that support L1 / L2 mobility are referred to as the configured set of cells. The cells in the configured set of cells can be configured to have a SpCell (special cell) configuration. The SpCell is a combination of a primary cell (PCell) and a primary secondary cell (PSCell). The PCell can be used in the master cell group (MCG) and the PSCell is used in the secondary cell group (SCG). The MCG and SCG are concepts used in dual connectivity and / or multi-connectivity, where the UE can be connected to two or more network nodes. The MCG includes a set of serving cells associated with the master node. The SCG can include a set of serving cells associated with the secondary node. The PCell is used to initiate an initial access to the network node in the MCG. The PSCell is used to perform an initial access under the SCG. The SpCell performs the functions of both the PCell and the PSCell. The SpCell can support physical uplink control channel (PUCCH) transmission and contention-based random access, and can also be activated. The cells in the configured set of cells can be on the same carrier frequency or on different carrier frequencies. Therefore, the techniques of the present disclosure are applicable for use with inter-cell carrier aggregation or intra-cell carrier aggregation.

[0031] The configured set of cells can include an active set of cells and a deactivated set of cells. The deactivated set of cells are the cells in the configured set of cells that are not in the active set of cells. The cells within the active set of cells can be used for data and / or control transmission and SpCell updates via L1 / L2 signaling. That is, the UE and the network node can convey data and control information via the cells in the active set of cells.

[0032] The set of deactivated cells is a set of cells within the set of L1 / L2 mobility configurations that cannot be used for data transmission and reception and control transmission and reception, but can be activated and used for SpCell updates via L1 / L2 signaling. Additionally, the UE can be configured to perform L1 signal measurements on cells in the set of deactivated cells as well as on cells in the set of activated cells. The UE will report any L1 signal measurements on cells in the set of deactivated cells via one or more cells in the set of activated cells. The UE can be configured to transmit the report to a network node via a DCI signal (e.g., L1 signaling) or via a MAC CE signal (e.g., L2 signaling).

[0033] In L1 / L2 inter-cell mobility, deactivated cells in the configured set of cells can support L1 signal measurements. The UE can perform L1 signal measurements and report such measurements to a network node to facilitate adequate beam management, timing synchronization, power control, and SpCell functionality activation. When an L1 / L2 mobility cell is in the set of deactivated cells, the UE performs L1 signal measurement reporting for such a cell via an activated cell in the set of activated cells. In some example techniques, which deactivated cells the UE performs L1 signal measurement reporting on and the type of reporting configuration to use are determined by signaling from a network node. For example, the measurements and reporting are configured by the network node, and non-periodic measurements and reporting can be triggered by signaling from the network node.

[0034] Using direct signaling from a network node to instruct the UE to perform L1 signal measurements on cells for L1 / L2 mobility may not allow for fast SpCell updates in all scenarios. This is because changes in the UE's actions (e.g., mobility) and channel conditions can be detected by the UE faster than by the network node. This disclosure describes techniques in which the UE is configured to trigger and report L1 signal measurements on cells in the configured set of cells for L1 / L2 mobility.

[0035] According to the technology of the present disclosure, one or more conditions may be configured for a UE to allow the UE to trigger L1 signal measurements of cells in a configured set of cells without a direct instruction from a network node. The conditions for triggering cell signal measurements may include one or more of UE mobility conditions, channel strength measurement conditions, and / or predicted blocking conditions. The network node may pre-configure the conditions for triggering cell signal measurements for the UE. Additionally, the network node may pre-configure for the UE one or more reporting configurations indicating a reporting format for reporting L1 signal measurements. The UE may be configured to determine a specific reporting configuration based on one or more conditions, which may be the same as or different from the conditions for triggering L1 signal measurements. The network node may also pre-configure the resources (e.g., time, frequency, beam, etc.) through which the UE will send reports of UE-triggered L1 signal measurements.

[0036] Compared with techniques in which the network node explicitly requests L1 signal measurements, by pre-configuring the conditions for triggering and reporting L1 signal measurements for the UE, the network node can receive such L1 signal measurements in a more timely manner. Thus, the technology of the present disclosure can facilitate faster serving cell updates (e.g., SpCell updates) for L1 / L2 inter-cell mobility, and can facilitate faster beam management, timing synchronization, and power control.

[0037] The following disclosure presents various devices and techniques for UE-triggered L1 measurement and reporting, which can be implemented across various telecommunication systems, network architectures, and communication standards. Now refer to Figure 1 , as an illustrative example and not a limitation, this schematic diagram shows various aspects of the present disclosure with reference to a wireless communication system 100. The wireless communication system 100 includes several interacting domains: a core network 102, a radio access network (RAN) 104, and a user equipment (UE) 106. By means of the wireless communication system 100, the UE 106 can be enabled to perform data communication with an external data network 110 (such as, but not limited to, the Internet).

[0038] The RAN 104 may implement any suitable one or more wireless communication technologies to provide radio access to the UE 106. As an example, the RAN 104 may operate according to the 3rd Generation Partnership Project (3GPP) New Radio (NR) specification (commonly referred to as 5G or 5G NR). In some examples, the RAN 104 may operate under a hybrid of 5G NR and the evolved universal terrestrial radio access network (eUTRAN) standard (commonly referred to as Long Term Evolution (LTE)). 3GPP refers to this hybrid RAN as the next generation RAN, or NG-RAN. Of course, many other examples may be utilized within the scope of the present disclosure.

[0039] As shown in the figure, the radio access network (RAN) 104 includes a plurality of network nodes 108 (also referred to as "base stations"). Broadly speaking, a base station is a network element in a radio access network that is responsible for radio transmission and reception to or from a UE in one or more cells. In different technologies, standards, or contexts, those skilled in the art may refer to a "base station" differently as a network node, transceiver base station (BTS), radio base station, radio transceiver, transceiver function, basic service set (BSS), extended service set (ESS), access point (AP), Node B (NB), evolved Node B (eNB), next-generation Node B (gNB), 5G NB, transmit receive point (TRP), distributed unit (DU), centralized unit (CU), or some other suitable term. In the examples of the present disclosure, the term "network node" may generally be used to refer to any one of the above terms for a "base station".

[0040] The radio access network (RAN) 104 supports wireless communication for a plurality of mobile devices. Those skilled in the art may refer to a mobile device as a UE as in the 3GPP specifications, but may also refer to a UE as a mobile station (MS), subscriber station, mobile unit, subscriber unit, radio unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal (AT), mobile terminal, wireless terminal, remote terminal, handset, terminal, user agent, mobile client, client, or some other suitable term. A UE may be a device that provides access to network services. A UE may take various forms and may include a range of devices.

[0041] Within the present disclosure, a "mobile" device (also referred to as a UE) does not necessarily need to have the ability to move and can be stationary. The term mobile device or mobile equipment broadly refers to a wide variety of devices and technologies. A UE can include multiple hardware structural components whose size, shape, and arrangement facilitate communication; such components can include antennas, antenna arrays, RF chains, amplifiers, one or more processors, etc., which are electrically coupled to each other. For example, some non-limiting examples of mobile devices include mobile stations, cellular (cell) phones, smart phones, Session Initiation Protocol (SIP) phones, laptop computers, personal computers (PCs), notebooks, netbooks, smartbooks, tablet devices, personal digital assistants (PDAs), and a wide range of embedded systems, such as those corresponding to the "Internet of Things" (IoT). A mobile device can additionally be an automobile or other transportation vehicle, a remote sensor or actuator, a robot or robotic device, a satellite radio, a Global Positioning System (GPS) device, an object tracking device, a drone, a multi-axis aircraft, a quadcopter, a remote control device, consumer and / or wearable devices (such as glasses, wearable cameras, virtual reality devices, smart watches, health or fitness trackers, digital audio players (e.g., MP3 players), cameras, gaming consoles, etc.). A mobile device can additionally be a digital home or smart home device, such as a home audio, video, and / or multimedia device, an appliance, a vending machine, smart lighting, a home security system, a smart meter, etc. A mobile device can additionally be a smart energy device, a security device, a solar panel or solar array, a municipal infrastructure device that controls electricity (e.g., a smart grid), lighting, water, etc.; industrial automation and enterprise equipment; a logistics controller; and agricultural equipment; etc. Further still, a mobile device can provide connected drug or telemedicine support, e.g., healthcare at a distance. Telemedicine devices can include telemedicine monitoring devices and telemedicine management devices, and their communication can be given priority or precedence over access to other types of information, e.g., in terms of priority access for the transmission of critical service data and / or related QoS for the transmission of critical service data. A mobile device can additionally include two or more decomposed devices that communicate with each other, including, for example, wearable devices paired with a smart phone, tactile sensors, limb movement sensors, eye movement sensors, etc. In various examples, such decomposed devices can communicate directly with each other via any suitable communication channel or interface, or can communicate indirectly with each other via a network (e.g., a local area network (LAN)).

[0042] The wireless communication between the RAN 104 and the UE 106 can be described as utilizing an air interface. The transmission from a base station (e.g., network node 108) to one or more UEs (e.g., UE 106) over the air interface can be referred to as a downlink (DL) transmission. According to some aspects of the present disclosure, the term "downlink" can refer to a point-to-multipoint transmission from a scheduling entity (described further below; e.g., network node 108). Another way to describe this scenario can be to use the term "broadcast channel multiplexing". The transmission from a UE (e.g., UE 106) to a base station (e.g., network node 108) can be referred to as an uplink (UL) transmission. According to further aspects of the present disclosure, the term "uplink" can refer to a point-to-point transmission originating from a scheduled entity (described further below; e.g., UE 106).

[0043] In some examples, access to the air interface can be scheduled, where a scheduling entity (e.g., network node 108) allocates resources for communication among some or all of the devices and equipment within its service area or cell. Within the present disclosure, as discussed further below, the scheduling entity can be responsible for scheduling, assigning, reconfiguring, and releasing resources for one or more scheduled entities. That is, for a scheduled communication, the UE 106 (which can be a scheduled entity) can utilize the resources allocated by the scheduling entity (e.g., network node 108).

[0044] The base station is not the only entity that can act as a scheduling entity. That is, in some examples, a UE or a network node can act as a scheduling entity, scheduling resources for one or more scheduled entities (e.g., one or more UEs).

[0045] As Figure 1 shown, the network node 108 can broadcast downlink traffic 112 to one or more UEs 106. Broadly speaking, the network node 108 is a node or device responsible for scheduling traffic in a wireless communication network, which includes downlink traffic 112 and (in some examples) uplink traffic 116 from one or more UEs 106 to the network node 108. On the other hand, the UE 106 is a node or device that receives downlink control information 114 (including but not limited to scheduling information (e.g., grant), synchronization or timing information, or other control information) from another entity in the wireless communication network, such as the network node 108.

[0046] Generally speaking, network node 108 may include a fronthaul interface for communicating with the fronthaul portion 120 of the wireless communication system. The fronthaul 120 may provide a link between network node 108 and core network 102. Additionally, in some examples, the fronthaul network may provide an interconnection between the respective network nodes 108. Various types of fronthaul interfaces may be employed, such as direct physical connections, virtual networks, or the like using any suitable transport network.

[0047] Core network 102 may be part of wireless communication system 100 and may be independent of the radio access technology used in RAN 104. In some examples, core network 102 may be configured according to 5G standards (e.g., 5GC). In other examples, core network 102 may be configured according to 4G evolved packet core (EPC) or any other suitable standard or configuration.

[0048] As will be explained in more detail below, UE 106 and network node 108 may be configured to perform one or more techniques for UE-triggered inter-cell mobility. In particular, UE 106 and network node 108 may be configured to perform techniques for updating the serving cell (e.g., special cell SpCell) through which UE 106 communicates with network node 108, where the update is performed via layer 1 (L1) or layer 2 (L2) signaling from network node 108 to UE 106. Network node 108 may configure a set of cells (e.g., configured cell set), which includes a subset of the active cells through which UE 106 and network node 108 perform data and control communication. Network node 108 may designate one of the active cells as the serving cell. Those cells in the configured cell set that are not in the active cell set are in the deactivated cell set.

[0049] The network node 108 may both periodically update the serving cell within the set of active cells and update which cells in the set of configured cells are part of the set of active cells. That is, the network node 108 may change which cell in the set of active cells is the serving cell. The network node 108 may also move one or more cells from the set of active cells to the set of deactivated cells, and vice versa. As part of making the determination for the serving cell update and / or the update of the set of active cells, the network node 108 may receive L1 signal measurements of one or more of these cells in the set of configured cells from the UE 106. That is, the UE 106 may be configured to perform L1 signal measurements on both the active cells and the deactivated cells, and transmit a report of the L1 signal measurements to the network node 108. The signal measurements may include signal-to-interference-plus-noise ratio (SINR) measurements and / or reference signal received power (RSRP) measurements. The UE 106 may be configured to transmit the report to the network node 108 via a DCI signal (e.g., L1 signaling) or via a MAC CE signal (e.g., L2 signaling).

[0050] According to the techniques of the present disclosure, the UE 106 may be configured with one or more conditions that allow the UE 106 to trigger L1 signal measurements of cells in the set of configured cells without a direct instruction from the network node 108. The conditions for triggering the cell signal measurements may include one or more of UE mobility conditions, channel strength measurement conditions, and / or predicted blocking conditions. The network node 108 may pre-configure the UE 106 with the conditions for triggering the cell signal measurements. Additionally, the network node 108 may pre-configure the UE 106 with one or more reporting configurations that indicate a reporting format for reporting the L1 signal measurements. The UE 106 may be configured to determine a particular reporting configuration based on one or more conditions, which may be the same as or different from the conditions for triggering the L1 signal measurements. The network node 108 may also pre-configure the resources (e.g., time, frequency, beam, etc.) through which the UE 106 will send the report of the UE-triggered L1 signal measurements.

[0051] Compared with techniques in which the network node 108 explicitly requests L1 signal measurements, by pre-configuring the UE 106 with the conditions for triggering and reporting L1 signal measurements, the network node 108 may receive such L1 signal measurements in a more timely manner. Therefore, the techniques of the present disclosure may facilitate faster serving cell updates (e.g., SpCell updates) for L1 / L2 inter-cell mobility, and may facilitate faster beam management, timing synchronization, and power control.

[0052] In an example of the present disclosure, the UE 106 may be configured to determine a first condition for triggering one or more L1 signal measurements for inter-cell mobility; perform one or more L1 signal measurements for one or more cells in a configured cell set for the UE based on determining that the first condition is triggered; and transmit a report of the one or more L1 signal measurements to the network node 108. In a reciprocal manner, the network node 108 may be configured to transmit to the UE 106 one or more conditions for triggering one or more L1 signal measurements for one or more cells in a configured cell set for the UE for inter-cell mobility; receive a report of the one or more L1 signal measurements from the UE 106; and perform inter-cell mobility operations based on the one or more L1 signal measurements. In some examples of the present disclosure, performing inter-cell mobility operations may include one or more of the following: updating a serving cell (e.g., SpCell) in an active cell set in the configured cell set and / or designating a specific cell in the configured cell set as being in the active cell set.

[0053] By way of example and not limitation, Figure 2 a schematic diagram of the RAN 200 is provided. In some examples, the RAN 200 may be the same as the RAN 104 described above and illustrated in Figure 1 . The geographical area covered by the RAN 200 may be divided into cellular regions (cells) that a UE can uniquely identify based on an identifier broadcast from a network node (e.g., access point, base station, etc.). Figure 2 Macro cells 202, 204, and 206 and a small cell 208 are illustrated.

[0054] Figure 2 Two of the three network nodes 210, 212, and 214 in cells 202, 204, and 206 are shown. In the illustrated example, cells 202, 204, and 206 may be referred to as macro cells because the network nodes 210, 212, and 214 support cells with larger sizes. Additionally, a network node 218 is shown in the small cell 208 (e.g., micro cell, pico cell, femto cell, home base station, home node B, home evolved node B, etc.), which may overlap with one or more macro cells. In this example, cell 208 may be referred to as a small cell because the network node 218 supports cells with relatively small sizes. Cell sizing may be performed according to system design and component constraints.

[0055] The RAN 200 may include any number of radio network nodes and cells. Additionally, the RAN may include relay nodes to extend the size or coverage area of a given cell. The network nodes 210, 212, 214, 218 provide a wireless access point to the core network for any number of mobile devices. In some examples, the network nodes 210, 212, 214, and / or 218 may be the same as the network node 108 described above and illustrated in Figure 1 as well.

[0056] Figure 2 Also included is a quadcopter or drone 220 configured to act as a network node. That is, in some examples, a cell may not necessarily be stationary, and the geographical area of a cell may move according to the position of a mobile network node such as the quadcopter 220.

[0057] Within the RAN 200, each network node 210, 212, 214, 218, and 220 may be configured to provide an access point to the core network 102 (see Figure 1 ) to all UEs in the corresponding cell. For example, UEs 222 and 224 may communicate with network node 210; UEs 226 and 228 may communicate with network node 212; UEs 230 and 232 may communicate with network node 214; UE234 may communicate with network node 218; and UE 236 may communicate with the mobile network node 220. In some examples, UEs 222, 224, 226, 228, 230, 232, 234, 236, 238, 240, and / or 242 may be the same as the UE 106 described above and illustrated in Figure 1 as well.

[0058] In some examples, a mobile network node (e.g., the quadcopter 220) may be configured to act as a UE. For example, the quadcopter 220 may operate within cell 202 by communicating with network node 210.

[0059] In another aspect of the RAN 200, sidelink signals can be used between UEs without relying on scheduling or control information from a network node (e.g., a scheduling entity). For example, two or more UEs (e.g., UEs 226 and 228) can communicate with each other using peer-to-peer (P2P) or sidelink signals 227 without relaying the communication through a network node. In another example, UE 238 is illustrated as communicating with UEs 240 and 242. Here, UE 238 can act as a scheduling entity or a primary sidelink device, and UE 240 or 242 can act as a scheduled entity or a non-primary (e.g., secondary) sidelink device. In yet another example, a UE can act as a scheduling entity in a device-to-device (D2D), peer-to-peer (P2P), or vehicle-to-vehicle (V2V) network and / or a mesh network. In the mesh network example, in addition to communicating with the scheduling entity 238, UEs 240 and 242 can also optionally communicate directly with each other. Thus, in a wireless communication system with scheduled access to time-frequency resources and having a cellular configuration, P2P configuration, or mesh configuration, a scheduling entity and one or more scheduled entities can utilize the scheduled resources to communicate.

[0060] Open RAN

[0061] The deployment of a communication system (such as a 5G NR system) can be arranged in various ways with various components or constituent parts. In a 5G NR system or network, network nodes, network entities, mobility elements of the network, RAN nodes, core network nodes, network elements, or network equipment (such as a base station BS, or one or more units (or one or more components) performing base station functionality) can be implemented in an aggregated or disaggregated architecture. For example, a base station (BS) (such as a Node B (NB), evolved NB (eNB), NR BS, 5G NB, access point (AP), transmit-receive point (TRP), or cell, or generally a network node, etc.) can be implemented as an aggregated base station (also referred to as a stand-alone BS or a monolithic BS) or a disaggregated base station. Example techniques of the present disclosure for UE-triggered L1 measurements for inter-cell mobility can be performed when communicating with an aggregated base station (e.g., a network node) or a disaggregated base station (e.g., a network node).

[0062] A centralized base station may be configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node. A split base station may be configured to utilize a protocol stack that is physically or logically distributed between two or more units, such as one or more central or centralized units (CUs), one or more distributed units (DUs), or one or more radio units (RUs). In some aspects, a CU may be implemented within a RAN node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually distributed across one or more other RAN nodes. A DU may be implemented to communicate with one or more RUs. Each of the CU, DU, and RU may also be implemented as a virtual unit, i.e., a virtual central unit (VCU), a virtual distributed unit (VDU), or a virtual radio unit (VRU).

[0063] Base station type operations or network designs may consider the aggregation characteristics of base station functionality. For example, split base stations may be used in an integrated access backhaul (IAB) network, an open radio access network (O-RAN, such as a network configuration as advocated by the O-RAN Alliance), or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN)). Splitting may include distributing functions across two or more units at various physical locations, as well as virtualizing the functions of at least one unit, which may enable flexibility in network design. The various units of a split base station or a split RAN architecture may be configured for wired or wireless communication with at least one other unit.

[0064] Figure 3 A diagram illustrating an example split base station 300 architecture is shown. The split base station 300 architecture may include one or more central units (CUs) 310, which may communicate directly with the core network 320 via a backhaul link, or indirectly with the core network 320 through one or more split base station units, such as a near real-time (near RT) RAN intelligent controller (RIC) 325 via an E2 link, or a non-real-time (non RT) RIC 315 associated with a service management and orchestration (SMO) framework 305, or both. The CU 310 may communicate with one or more distributed units (DUs) 330 via respective midhaul links, such as an F1 interface. The DU 330 may communicate with one or more radio units (RUs) 340 via respective fronthaul links. The RU 340 may communicate with a respective UE 106 via one or more radio frequency (RF) access links. In some embodiments, the UE 106 may be served simultaneously by multiple RUs 340.

[0065] Each of the units (i.e., CU 310, DU 330, RU 340, and the near RT RIC 325, non-RT RIC 315, and SMO framework 305) may include one or more interfaces or be coupled to one or more interfaces that are configured to receive or transmit signals, data, or information (collectively, signals) via a wired or wireless transmission medium. Each of the units or the associated processor or controller that provides instructions to the communication interfaces of these units may be configured to communicate with one or more of the other units via the transmission medium. For example, the units may include a wired interface that is configured to receive or transmit signals to one or more of the other units via a wired transmission medium. Additionally, the unit may include a wireless interface that may include a receiver, transmitter, or transceiver (such as a radio frequency (RF) transceiver) that is configured to receive or transmit signals, or both, to one or more of the other units via a wireless transmission medium.

[0066] In some aspects, the CU 310 may host one or more higher layer control functions. Such control functions may include radio resource control (RRC), packet data convergence protocol (PDCP), service data adaptation protocol (SDAP), etc. Each control function may utilize an interface that is configured to convey signals with other control functions hosted by the CU 310. The CU 310 may be configured to handle user plane functionality (i.e., central unit-user plane (CU-UP)), control plane functionality (i.e., central unit-control plane (CU-CP)), or a combination thereof. In some embodiments, 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.

[0067] The DU 330 may correspond to a logical unit that includes one or more base station functions for controlling the operation of one or more RUs 340. In some aspects, the DU 330 may host one or more of the radio link control (RLC) layer, the media access control (MAC) layer, and one or more high physical (PHY) layers (such as modules for forward error correction (FEC) encoding and decoding, scrambling, modulation, and demodulation, etc.) at least partially according to a functional split (such as those defined by the 3rd Generation Partnership Project (3GPP)). In some aspects, the DU 330 may also host one or more low PHY layers. Each layer (or 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.

[0068] Lower layer functionality may be implemented by one or more RUs 340. In some deployments, the RUs 340 controlled by the DU 330 may correspond to logical nodes that host RF processing functions or low PHY layer functions (such as performing fast Fourier transform (FFT), inverse FFT (iFFT), digital beamforming, physical random access channel (PRACH) extraction and filtering, etc.) or both at least partially based on a functional split (such as a lower layer functional split). In such an architecture, the RUs 340 may be implemented to handle over-the-air (OTA) communication with one or more UEs 106. In some embodiments, the real-time and non-real-time aspects of the control plane and user plane communication with the RUs 340 may be controlled by the corresponding DU 330. In some scenarios, this configuration may enable the implementation of the DU 330 and the CU 310 in a cloud-based RAN architecture (such as a vRAN architecture).

[0069] The SMO framework 305 can be configured to support the RAN deployment and orchestration of non-virtualized network elements and virtualized network elements. For non-virtualized network elements, the SMO framework 305 can be configured to support the deployment of dedicated physical resources for RAN coverage requirements, and these dedicated physical resources can be managed via an operation 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) 390) to perform network element lifecycle management (such as to instantiate virtualized network elements) via a cloud computing platform interface (such as the O2 interface). Such virtualized network elements can include, but are not limited to, the CU 310, DU 330, RU 340, and near RT RIC 325. In some specific implementations, the SMO framework 305 can communicate with the hardware aspect of the 4G RAN (such as the Open eNB (O-eNB) 311) via the O1 interface. Additionally, in some specific implementations, the SMO framework 305 can communicate directly with one or more RUs 340 via the O1 interface. The SMO framework 305 can also include a non-RT RIC 315 configured to support the functionality of the SMO framework 305.

[0070] The non-RT RIC 315 can be configured to include logical functions that can implement 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 communicate with the near RT RIC 325 (such as via the A1 interface). The near RT RIC 325 can be configured to include logical functions that can achieve near-real-time control and optimization of RAN elements and resources through an interface (such as via the E2 interface) via data collection and actions, and this interface connects one or more CUs 310, one or more DUs 330, or both, and the O-eNB to the near RT RIC 325.

[0071] In some specific implementations, to generate the AI / ML models to be deployed in the near-RT RIC 325, the non-RT RIC 315 may receive parameters or external enrichment information from an external server. Such information can be utilized by the near-RT RIC 325 and can be received from non-network data sources or from network functions at the SMO framework 305 or the non-RT RIC 315. In some examples, the non-RT RIC 315 or the near-RT RIC 325 may be configured to tune the RAN behavior or performance. For example, the non-RT RIC 315 may monitor the long-term trends and patterns of performance, and employ AI / ML models to perform corrective actions via the SMO framework 305 (such as reconfiguration via O1) or via creating RAN management policies (such as A1 policies).

[0072] Communication protocol layer

[0073] Figure 4 is a schematic diagram of a user plane protocol stack 402 and a control plane protocol stack 452 according to some aspects of the present disclosure. In a radio telecommunications system, the communication protocol architecture may take various forms depending on the application. For example, in a 3GPP NR system, the signaling protocol stack is divided into a non-access stratum (NAS, 458) and an access stratum (AS, 402–406 and 452–457) layers and protocols. The NAS protocol 458 provides the upper layer for signaling between the UE 106 and the core network 102 (reference Figure 1 ). The AS protocols 402-406 and 452-457 provide the lower layers for signaling between the RAN 104 (e.g., gNB or other network nodes 108) and the UE 106.

[0074] Turning to Figure 4 , the radio protocol architecture is illustrated as having a user plane protocol stack 402 and a control plane protocol stack 452, which show their respective layers or sub-layers. The radio bearers between the network node 108 and the UE 106 can be classified as data radio bearers (DRBs) for carrying user plane data corresponding to the user plane protocol 402; and signaling radio bearers (SRBs) for carrying control plane data corresponding to the control plane protocol 452.

[0075] In AS, both the user plane 402 and control plane 452 protocols include a Physical Layer (PHY) 402 / 452, a Medium Access Control Layer (MAC) 403 / 453, a Radio Link Control Layer (RLC) 404 / 454, and a Packet Data Convergence Protocol Layer (PDCP) 405 / 455. The PHY 402 / 452 is the lowest layer and implements various physical layer signal processing functions. The PHY 402 / 452 may also be referred to as Layer (L1). The MAC layer 403 / 453 provides multiplexing between logical channels and transport channels and is responsible for various functions. For example, the MAC layer 403 / 453 is responsible for reporting scheduling information, priority handling and priority determination, and error correction through Hybrid Automatic Repeat Request (HARQ) operations. The RLC layer 404 / 454 provides functions such as sequence numbering of upper layer data packets, segmentation and reassembly, and duplicate packet detection. The PDCP layer 405 / 455 provides functions including header compression of upper layer data packets to reduce radio transmission overhead, security through encryption of data packets, and integrity protection and verification. The MAC layer 403 / 453, the RLC layer 404 / 454, and the PDCP layer 405 / 455 may be referred to as Layer 2 (L2).

[0076] In the user plane protocol stack 402, the Service Data Adaptation Protocol (SDAP) layer 406 provides services and functions for maintaining the desired Quality of Service (QoS). And in the control plane protocol stack 452, the Radio Resource Control (RRC) layer 457 includes multiple functional entities for routing higher layer messages, handling broadcast and paging functions, establishing and configuring radio bearers, NAS message transfer between the NAS and the UE, etc. The RRC layer 457 may also be referred to as Layer 3 (L3).

[0077] The NAS protocol layer 458 provides various control functions between the UE 106 and the core network 102. These functions include, for example, registration management functionality, connection management functionality, and activation and deactivation of the user plane connection.

[0078] PHY frame structure

[0079] Figure 5 As schematically illustrated with reference to the OFDM waveform, various aspects of the present disclosure are presented. Those of ordinary skill in the art should appreciate that the various aspects of the present disclosure can be applied to the DFT-s-OFDMA waveform in substantially the same manner as described below. That is, although for clarity some examples of the present disclosure may focus on OFDM links, it should be understood that the same principles can also be applied to the DFT-s-OFDMA waveform.

[0080] In some examples, a frame may refer to a predefined time duration for wireless transmission (e.g., 10 ms). Additionally, each frame may include a set of subframes (e.g., 10 subframes each of 1 ms). A given carrier may include one set of frames in the UL and another set of frames in the DL. Figure 5 An expanded view of an exemplary DL subframe 502 is illustrated, showing an OFDM resource grid 504. However, as will be readily appreciated by those skilled in the art, the PHY transmission structure for any application may be different from the examples described herein, depending on any number of factors. Here, time is in the horizontal direction in terms of OFDM symbols; and frequency is in the vertical direction in terms of subcarriers or tones.

[0081] The resource grid 504 may schematically represent the time - frequency resources for a given antenna port. That is, in an MIMO implementation with multiple available antenna ports, a corresponding multiple number of resource grids 504 may be available for communication. The resource grid 504 is divided into a plurality of resource elements (REs) 506. An RE (which is 1 subcarrier × 1 symbol) is the smallest discrete portion of the time - frequency grid and may contain a single complex value representing data from a physical channel or signal. Depending on the modulation utilized in a particular implementation, each RE may represent one or more bits of information. In some examples, a block of REs may be referred to as a physical resource block (PRB), or more simply as a resource block (RB) 508, which contains any suitable number of consecutive subcarriers in the frequency domain. In one example, an RB may span 12 subcarriers (the number is independent of the parameter set used). In some examples, depending on the parameter set, an RB may include any suitable number of consecutive OFDM symbols in the time domain.

[0082] A given UE typically utilizes only a subset of the resource grid 504. An RB may be the smallest resource unit that a scheduler can allocate to a UE. Thus, the more RBs scheduled for a UE and the higher the modulation scheme selected for the air interface, the higher the data rate for the UE.

[0083] In this illustration, the RB 508 occupies less than the entire bandwidth of the subframe 502, with some subcarriers illustrated above and below the RB 508. In a given implementation, the subframe 502 may have a bandwidth corresponding to any number of one or more RBs 508. Additionally, the RB 508 is shown as occupying less than the entire duration of the subframe 502, although this is only one possible example.

[0084] Each 1 - ms subframe 502 may include one or more adjacent time slots. In Figure 5As an illustrative example, a subframe 502 includes four time slots 510. In some examples, a time slot may be defined according to a specified number of OFDM symbols with a given cyclic prefix (CP) length. For example, a time slot may include 7 or 14 OFDM symbols with a nominal CP. Additional examples may include mini-slots with a shorter duration (e.g., one or two OFDM symbols). In some cases, a network node may occupy resources scheduled for an ongoing time slot transmission for the same or a different UE to transmit these mini-slots.

[0085] An expanded view of one of the time slots 510 illustrates that the time slot 510 includes a control region 512 and a data region 514. Generally speaking, the control region 512 may carry a control channel (e.g., PDCCH), and the data region 514 may carry a data channel (e.g., PDSCH or PUSCH). Of course, a time slot may contain all DL, all UL, or at least one DL part and at least one UL part. Figure 5 The illustrated structure is merely exemplary in nature, and different time slot structures may be utilized, and these time slot structures may include one or more regions in each of the control region and the data region.

[0086] Although not illustrated in Figure 5 each RE 506 within the RB 508 may carry one or more physical channels, including control channels, shared channels, data channels, etc. Other RE 506 within the RB 508 may also carry pilot signals or reference signals. These pilot signals or reference signals may be provided to a receiving device to perform channel estimation of the corresponding channel, which may enable coherent demodulation / detection of the control channel and / or data channel within the RB508.

[0087] In a DL transmission, a transmitting device (e.g., Figure 1 network node 108 of Figure 1 ) may allocate one or more RE 506 (e.g., within the control region 512) to carry one or more DL control channels. These DL control channels include DL control information (DCI) 114 (

[0088] A network node may transmit a synchronization signal PSS and SSS (collectively referred to as SS) in an SS block including four consecutive OFDM symbols, and in some examples, transmit PBCH. In the frequency domain, the SS block may extend over 240 consecutive subcarriers. Of course, the present disclosure is not limited to this particular SS block configuration. Within the scope of the present disclosure, other non-limiting examples may utilize more or fewer than two synchronization signals; may include one or more supplementary channels in addition to PBCH; PBCH may be omitted; and / or non-consecutive symbols may be used for the SS block.

[0089] The PDCCH may carry downlink control information (DCI) for one or more UEs in a cell. This may include, but is not limited to, power control commands for DL and UL transmissions, scheduling information, grants, and / or assignments to REs.

[0090] In UL transmission, a transmitting device (e.g., UE 106) may utilize one or more REs 506 to carry one or more UL control channels, such as a physical uplink control channel (PUCCH), a physical random access channel (PRACH), etc. These UL control channels include UL control information (UCI) 118( Figure 1 ), which generally carries information originating from a higher layer. In addition, UL REs may carry UL physical signals that generally do not carry information originating from a higher layer, such as a demodulation reference signal (DM-RS), a phase tracking reference signal (PT-RS), a sounding reference signal (SRS), etc. In some examples, the control information 118 may include a scheduling request (SR), i.e., a request for the network node 108 to schedule an uplink transmission. Here, in response to an SR sent on the UL control channel 118 (e.g., PUCCH), the network node 108 may send downlink control information (DCI) 114, which may schedule resources for an uplink packet transmission.

[0091] UL control information may also include hybrid automatic repeat request (HARQ) feedback, such as an acknowledgement (ACK) or a negative acknowledgement (NACK), channel state information (CSI), or any other suitable UL control information. HARQ is a technique well known to those of ordinary skill in the art, where the receiving device may verify the integrity of a packet transmission for accuracy, e.g., using any suitable integrity verification mechanism, such as a checksum or a cyclic redundancy check (CRC). If the receiving device confirms the integrity of the transmission, it may send an ACK, while if it does not confirm the integrity of the transmission, it may send a NACK. In response to a NACK, the transmitting device may transmit a HARQ retransmission, which may implement chase combining, incremental redundancy, etc.

[0092] In addition to control information, one or more REs 506 (e.g., within data region 514) may also be allocated for user data or traffic data. Such traffic may be carried on one or more traffic channels, such as, for DL transmission, on the physical downlink shared channel (PDSCH); or for UL transmission, on the physical uplink shared channel (PUSCH).

[0093] To enable the UE to obtain initial access to the cell, the RAN may provide system information (SI) characterizing the cell. The RAN may utilize minimum system information (MSI) and other system information (OSI) to provide this system information. The RAN may broadcast the MSI periodically on the cell to provide the most basic information required for the UE to perform initial cell access and for the UE to be able to obtain any OSI that the RAN may broadcast periodically or on demand. In some examples, the network may provide the MSI on two different downlink channels. For example, the PBCH may carry the master information block (MIB), while the PDSCH may carry the system information block type 1 (SIB1). Here, the MIB may provide the UE with parameters for monitoring the control resource set. The control resource set may thus provide the UE with scheduling information corresponding to the PDSCH, e.g., the resource location of SIB1. In the art, SIB1 may be referred to as the remaining minimum system information (RMSI).

[0094] The OSI may include any SI not broadcast in the MSI. In some examples, the PDSCH may carry multiple SIBs, not limited to SIB1 discussed above. Here, the RAN may provide the OSI in these SIBs (e.g., SIB2 and above).

[0095] As described above and exemplified in Figure 1 and Figure 5 the channels or carriers are not necessarily all the channels or carriers available between network node 108 and UE106, and one of ordinary skill in the art will recognize that other channels or carriers, such as other traffic, control, and feedback channels, may be utilized in addition to those exemplified.

[0096] In some examples, the physical layer may generally multiplex these physical channels described above and map them to transport channels for handling at the medium access control (MAC) layer entity. The transport channels carry information blocks called transport blocks (TBs). Based on the modulation and coding scheme (MCS) and the number of RBs in a given transmission, the transport block size (TBS) (which may correspond to the number of information bits) may be a controlled parameter.

[0097] Initial access procedure

[0098] UE 106 may perform a given initial access procedure to obtain access to a cell and establish a Radio Resource Control (RRC) connection with the RAN. The initial access procedure may include a cell search procedure, a random access procedure, and an RRC connection establishment procedure.

[0099] To perform cell search, UE 106 monitors certain established resources known to carry Synchronization Signal / PBCH blocks (SS blocks). Once obtained, UE 106 may be configured to use the synchronization signal to synchronize with network node 108 and find its cell ID, and use the information in the PBCH to locate and obtain the system information (SI) characterizing the cell. The RAN may provide this system information by periodically broadcasting SS blocks and System Information Blocks (SIBs). That is, UE 106 may obtain the Master Information Block (MIB) from the PBCH carried on the SS block, and obtain System Information Block type 1 (SIB1) from the identified data channel. The MIB and SIB1 together provide the minimum system information (MSI) for cell access to UE 106. UE 106 may obtain some other system information (OSI) from additional SIBs that the RAN may periodically broadcast or deliver on demand. The OSI may include any SI not broadcast in the MSI. In some examples, the PDSCH may carry multiple SIBs, not limited to SIB1 discussed above. Here, the RAN may provide the OSI in these SIBs (e.g., SIB2 and above).

[0100] These operations provide UE 106 with sufficient RRC information to identify the resources of the cell. However, to establish an RRC connection with a network node (e.g., network node 108), UE 106 may perform a random access procedure. Here, UE 106 and network node 108 exchange information with each other and establish an RRC connection. The ongoing connection management for controlling the connection state of UE 106 with the core network may be handled by a higher layer signaling protocol (e.g., RRC).

[0101] Mobility

[0102] In a radio access network, the ability of a UE to communicate while moving (independent of its location) is called mobility. The Access and Mobility Management Function (AMF, not illustrated, Figure 1 part of the core network 102) may generally establish, maintain, and release various physical channels between UE 106 and the radio access network. The AMF may also include a Security Context Management Function (SCMF) that manages the security context for both control plane and user plane functionality, and a Security Anchor Function (SEAF) that performs authentication.

[0103] Inter-cell mobility

[0104] Figure 6 is a schematic diagram of inter-cell mobility according to various aspects of the present disclosure. In particular, Figure 6 An example of L1 / L2 inter-cell mobility is shown. In L1 / L2 inter-cell mobility, a network node such as a gNB-CU 600 and a DU 602 may use L1 and / or L2 signaling to update a serving cell through which a UE 106 may communicate with the network node. The L1 signaling may include a DCI signal, and the L2 signaling may include a medium access control (MAC) control element (CE) signal. The network node may transmit the L1 / L2 signaling to the UE 106 through a current serving cell (e.g., a special cell (SpCell)). L1 / L2 inter-cell mobility may be contrasted with other forms of inter-cell mobility in which a serving cell may be updated using L3 RRC signaling.

[0105] exist Figure 6 In the example of FIG. 1 , UE 106 may be configured to communicate with gNB-CU 600 and DU 600 via one or more cells (cell 1-cell 9) in configured cell set 610. In this example, gNB-CU 600 and DU 610 may be considered as a RAN in an open RAN configuration. Figure 1 610. However, the techniques of the present disclosure are not limited to a particular type of network node or a particular type of network configuration. In the context of the present disclosure, the term cell is a general term and can be considered a radio unit (RU) in an open RAN architecture. In other contexts, a cell can be a radio head, a Tx / Rx point (TRP), or a physical cell ID (PCI). In some examples, the cells in the configured cell set 610 can be the same cell on different frequencies.

[0106] In one example of the present disclosure, the gNB-CU 600 and / or the DU 602 may configure, via RRC signaling to the UE 106, a set of cells (e.g., cell 1 - cell 9) that support L1 / L2 mobility. In this example, the cells that support L1 / L2 mobility are the configured cell set 610. The cells in the configured cell set 610 are configured to have a SpCell (special cell) configuration. The SpCell is a combination of a primary cell (PCell) and a primary secondary cell (PSCell). The PCell may be used in the master cell group (MCG) and the PSCell is used in the secondary cell group (SCG). The MCG and the SCG are concepts used in dual connectivity and / or multi-connectivity, where the UE may be connected to two or more network nodes. The MCG includes a set of serving cells associated with the master node. The SCG may include a set of serving cells associated with the secondary node. The PCell is used to initiate an initial access to a network node in the MCG. The PSCell is used to perform an initial access under the SCG. The SpCell performs the functions of both the PCell and the PSCell. The SpCell may support physical uplink control channel (PUCCH) transmission and contention-based random access and may also be activated. The cells in the configured cell set 610 may be on the same carrier frequency or on different carrier frequencies. Thus, the techniques of the present disclosure are applicable for use with inter-cell carrier aggregation or intra-cell carrier aggregation.

[0107] The configured cell set 610 may include an active cell set 620 and a deactivated cell set. The deactivated cell set is the cells in the configured cell set 610 that are not in the active cell set 620. In Figure 6 the example, cell 2, cell 3, cell 4, and cell 5 are in the active cell set 620. Thus, cell 1, cell 6, cell 7, cell 8, and cell 9 are in the deactivated cell set in the configured cell set 610. The cells within the active cell set 620 may be used for data and / or control transmission and SpCell updates via L1 / L2 signaling. That is, the UE 106 and the DU 602 may communicate data and control information via the cells in the active cell set 620. A special case of this scenario is when the UE 106 is configured (e.g., based on the capabilities of the UE 106) to have only one cell in the active cell set 620. In this case, the activation of another cell from the configured cell set 610 will result in the deactivation of the current serving cell and a change in the SpCell.

[0108] The set of deactivated cells is a set of cells in the L1 / L2 mobility configuration set 610 that cannot be used for data and control transmission and reception, but can be activated and used for SpCell update via L1 / L2 signaling. Additionally, UE 106 can be configured to perform L1 signal measurements on cells in the set of deactivated cells as well as cells in the set of activated cells 620. UE 106 will report any L1 signal measurements on cells in the set of deactivated cells via one or more cells in the set of activated cells 620.

[0109] As described above, for L1 / L2 inter-cell mobility, the deactivated cells in the configured cell set 610 can support L1 signal measurements. UE 106 can perform L1 signal measurements and report such measurements to DU 602 to facilitate adequate beam management, timing synchronization, power control, and SpCell functionality activation. UE 106 can be configured to transmit the report to DU 602 via a DCI signal (e.g., L1 signaling) or via a MAC CE signal (e.g., L2 signaling). When an L1 / L2 mobility cell is in the set of deactivated cells, UE 106 performs L1 signal measurement reporting for such a cell via an activated cell in the set of activated cells 610. In some example techniques, which deactivated cells UE 106 performs L1 signal measurement reporting on and the type of reporting configuration to use are determined by signaling from gNB-CU 600 and DU 602. For example, the measurements and reporting are configured by gNB-CU 600 / DU 602, and the aperiodic measurements and reporting can be triggered by signaling from gNB-CU 600 / DU 602.

[0110] Using direct signaling from network nodes to instruct the UE to perform L1 signal measurements on cells for L1 / L2 mobility may not allow for fast SpCell updates in all scenarios. This is because the actions of the UE (e.g., mobility) and changes in the channel conditions can be detected by the UE faster than by the network nodes. This disclosure describes techniques in which the UE is configured to trigger and report L1 signal measurements on cells in a configured cell set for L1 / L2 mobility.

[0111] Measurement report

[0112] As described above, network nodes can use L1 signal measurements of cells in a configured cell set to perform L1 / L2 mobility procedures, such as updating the SpCell and / or updating cells in the set of activated cells. The UE can be configured to perform L1 signal measurements on multiple cells in the configured cell set, which includes both cells in the set of activated cells and cells in the set of deactivated cells.

[0113] In one example, a network node may configure a UE to perform L1 signal measurements via RRC configuration. The L1 signal measurements may include L1 signal to interference plus noise ratio (L1-SINR) measurements and / or L1 reference signal received power (L1-RSRP) measurements. In any of the examples below, UE 106 may be configured to perform SINR, RSRP, or other signal measurements on CSI-RS or synchronization signal block (SSB) reference signals. The UE may calculate the SINR measurement as the average of the power contributions of the resource elements carrying the measured signal divided by the average of the noise and interference power contributions of the resource elements carrying the measured signal within the same frequency bandwidth. The UE may calculate the RSRP measurement as the average of the power contributions of the resource elements carrying the measured signal.

[0114] The network node may also configure, via RRC configuration, how the UE will report the time and frequency of the L1 signal measurements. In some examples, the reporting of the L1 signal measurements may be periodic (e.g., sent on PUCCH). In other examples, the reporting of the L1 signal measurements may be semi-persistent (e.g., in response to an activation command for transmission on PUCCH and / or DCI triggered for transmission on PUSCH). In other examples, the reporting of the L1 signal measurements may be aperiodic (e.g., DCI triggered and sent on PUSCH). In some examples, the network node may configure the UE to transmit the report via a DCI signal (e.g., L1 signaling) or via a MAC CE signal (e.g., L2 signaling).

[0115] In addition to the reporting time and frequency, the network node may also configure, via RRC configuration, the L1 signal measurement report format. Example report formats may include per-cell reporting, where the L1 signal measurements are reported for each cell (e.g., as indicated by the cell ID). The network node may further enable L1 signal measurement reporting for deactivated cells. In another example, the network node may configure the UE to report L1 signal measurements by group of serving cells, where the group of serving cells includes active cells, deactivated cells, candidate cells, or a combination of active cells, deactivated cells, and candidate cells. In some examples, the network node may configure the UE to transmit the L1 signal measurement report on the serving cell and an additional PCI (“AdditionalPCI”). In this context, AdditionalPCI refers to cells other than the serving cell, where the serving cell and the additional cells are on the same carrier frequency.

[0116] UE-triggered L1 signal measurement

[0117] Return to Figure 6, according to the technology of the present disclosure, one or more conditions for allowing the UE 106 to trigger L1 signal measurements of cells in a configured cell set without direct instructions from a network node (e.g., gNB-CU 600 / DU 602) can be configured for the UE. The conditions for triggering cell signal measurements can include one or more of UE mobility conditions, channel strength measurement conditions, and / or predicted blocking conditions. The network node can pre-configure the conditions for triggering cell signal measurements for the UE 106. Additionally, the network node can pre-configure one or more reporting configurations for the UE 106 that indicate the reporting format for reporting L1 signal measurements. The UE 106 can determine a specific reporting configuration based on one or more conditions, which can be the same as or different from the conditions for triggering L1 signal measurements. The network node can also pre-configure the resources (e.g., time, frequency, beam, etc.) through which the UE will send reports of UE-triggered L1 signal measurements.

[0118] Compared with the technology where the network node explicitly requests L1 signal measurements, by pre-configuring the conditions for triggering and reporting L1 signal measurements for the UE 106, the network node can receive such L1 signal measurements in a more timely manner. Therefore, the technology of the present disclosure can facilitate faster serving cell updates (e.g., SpCell updates) for L1 / L2 inter-cell mobility, and can facilitate faster beam management, timing synchronization, and power control.

[0119] In a general example of the present disclosure, the UE 106 can be configured to determine a first condition (e.g., among multiple conditions) for triggering one or more L1 signal measurements for inter-cell mobility; perform one or more L1 signal measurements of one or more cells in a cell set configured for the UE 106 (e.g., the configured cell set 610) based on determining that the first condition is triggered; and transmit a report of the one or more L1 signal measurements to a network node (e.g., the network node 108 and / or Figure 6 the gNB-CU 600 / DU 602 of Figure 1 ). In a reciprocal manner, the network node (e.g., the network node 108 and / or Figure 6 the gNB-CU 600 / DU 602 of Figure 1 ). Figure 6The gNB-CU600 / DU602) may transmit to the UE 106 one or more conditions for triggering one or more L1 signal measurements for one or more cells in the cell set configured for the UE 106 for inter-cell mobility; receive from the UE 106 a report of one or more L1 signal measurements; and perform inter-cell mobility operations based on the one or more L1 signal measurements. In some examples of the present disclosure, performing inter-cell mobility operations may include one or more of the following: updating the serving cell (e.g., SpCell) in the active cell set in the configured cell set and / or designating a specific cell in the configured cell set as being in the active cell set. Examples of the present disclosure for configuring conditions for UE-triggered L1 signal measurements, configuring report configurations for reporting L1 signal measurements, configuring resources for reporting L1 signal measurements, and configuring filtering techniques for L1 signal measurements are described in more detail below.

[0120] As described above, one or more conditions for triggering L1 signal measurements for cells in the configured cell set 610 may be pre-configured for the UE 106 via RRC signaling. That is, the UE 106 may receive from a network node one or more conditions for triggering one or more L1 signal measurements. Similarly, the network node (e.g., Figure 1 the network node 108 and / or Figure 6 the gNB-CU600 / DU602) may be configured to transmit the one or more conditions to the UE 106 via RRC signaling.

[0121] In one example of the present disclosure, the condition for UE-triggered L1 signal measurement is a mobility condition. Generally speaking, the UE mobility condition is a mobility distance threshold. The mobility distance threshold may be represented by distance, speed, acceleration, or any combination thereof. The UE 106 may use one or more sensors and / or data available to the UE 106 to determine the distance, speed, and / or acceleration of the UE. Such sensors may include a Global Positioning System (GPS) sensor, other positioning sensors, an accelerometer, etc. The UE106 may be configured to determine the mobility distance of the UE and compare the mobility distance with the mobility distance threshold of the mobility condition to generate a comparison result. The UE 106 may then determine the UE mobility condition for triggering one or more L1 signal measurements for inter-cell mobility based on the comparison result. If triggered, the UE 106 may calculate the L1 signal measurement and report the L1 signal measurement to the network node. The movement of the UE may cause the deterioration of the channel quality on one or more cells in the configured cell set. By triggering L1 signal measurements based on the UE mobility condition, faster L1 signal measurements can be achieved, thereby allowing for faster update of the serving cell and / or faster update of the cells in the active cell set.

[0122] In another example, the condition for UE-triggered L1 signal measurement is a channel strength measurement condition. The channel strength measurement condition is a channel strength threshold for one or more cells in a configured set of cells. The channel strength measurement can be the power level of the signal strength of a specific reference signal (such as PSS, SSS, DM-RS, PT-RS, CSI-RS, or another signal). The channel strength measurement condition can be applied to certain preselected cells or all cells from a set of L1 / L2 mobile cells. In one example, UE 106 can be configured to determine the channel strength of at least one cell among one or more cells in a configured set of cells. UE 106 can compare the channel strength with a channel strength threshold to generate a comparison result. UE 106 can then determine, based on the comparison result, a channel strength measurement condition for triggering one or more L1 signal measurements for inter-cell mobility. A loss of channel strength detected by UE 106 on one or more specific cells can indicate a change in the serving cell (e.g., SpCell) in the set of cells to be activated and / or an update of the deactivated cells. By enabling UE 106 to trigger L1 signal measurements based on channel strength measurements, faster L1 signal measurements can be achieved, allowing for a faster update of the serving cell and / or a faster update of the cells in the set of activated cells.

[0123] In another example, the condition for UE-triggered L1 signal measurement is a predicted blocking condition. In this example, UE 106 may be configured to perform a predictive blocking process to determine a predicted blocking value. In this context, the predictive blocking process can be any process performed by UE 106 that is configured to determine changes in the physical environment around UE 106 that will or are predicted to degrade the channel quality on one or more cells. For example, UE 106 may perform a predictive blocking process to determine whether a building, a car, a person, or other object may cause signal degradation or deterioration of one or more cells in the set of active cells. UE 106 may use a camera, LiDAR, radar, or other sensor technology to perform the predictive blocking process. In other examples, the predicted blocking may be based on the maximum allowable exposure (MPE) limit, where the power density of the UE's transmit antenna may be reduced based on the proximity to the user. Regardless of how the predicted blocking is performed and how the predicted blocking value is determined, UE 1906 may compare the predicted blocking value with the predicted blocking condition to generate a comparison result, and based on this comparison result, determine a predicted blocking condition for inter-cell mobility triggering to perform one or more L1 signal measurements. The predicted blocking of the signal between one or more specific cells communicating with UE 106 may indicate a need for a change in the serving cell (e.g., SpCell) and / or an update of the deactivated cells in the set of active cells. By enabling UE 106 to trigger L1 signal measurements based on predicted blocking, faster L1 signal measurements can be achieved, thereby allowing for a faster update of the serving cell and / or a faster update of the cells in the set of active cells.

[0124] In addition to the above conditions, the network node may also configure other conditions detectable by UE 106, which may indicate a change in the channel condition that can guarantee L1 signal measurement. Moreover, UE 106 is not limited to triggering L1 signal measurement based on a single condition, but may trigger L1 signal measurement based on any combination of the configured conditions.

[0125] In addition to the conditions based on which the pre-configured UE 106 may trigger L1 signal measurements, a network node may further configure the UE 106 to perform L1 signal measurements on which or which of the cells in the configured cell set 610, for example, via RRC. Multiple cell groups may be configured. In one example, the UE 106 may receive from a network node a measurement configuration including one or more measurement parameters for performing one or more L1 signal measurements, and perform one or more L1 signal measurements on one or more cells in the configured cell set based on the one or more measurement parameters. The measurement configuration may be separate from the configuration of the conditions for triggering L1 signal measurements, or may be included in the same RRC configuration as these conditions. In one example, the one or more measurement parameters indicate one or more specific cells in the configured cell set on which one or more L1 signal measurements are to be performed.

[0126] In any of the above examples, the one or more L1 signal measurements performed by the UE 106 may include one of a reference signal received power (RSRP) measurement or a signal-to-interference-plus-noise ratio (SINR) measurement. However, other types of L1 signal measurements may be performed. In one example, the UE 106 may be configured to perform one or more L1 signal measurements on one or more cells in the active cell set in the configured cell set. In another example, the UE 106 may be configured to perform one or more L1 signal measurements on one or more cells in the deactivated cell set in the configured cell set. In yet another example, the UE 106 may be configured to perform one or more L1 signal measurements on one or more cells in the active cell set in the configured cell set and perform one or more L1 signal measurements on one or more cells in the deactivated cell set in the configured cell set.

[0127] After transmitting L1 measurements to a network node, the UE 106 may receive L1 signaling or L2 signaling from the network node that indicates updated serving cells in the active cell set based on the L1 signal measurements. In one example, the L1 signaling is downlink control information (DCI) signaling, the L2 signaling is medium access control (MAC) control element (CE) signaling, and the serving cell is a special cell (SpCell).

[0128] UE-triggered L1 signal measurement report

[0129] Once the triggering conditions are met, the UE 106 can report multiple measurements to the network node. The UE 106 can be configured to report L1 signal measurements (e.g., SINR or RSRP) according to the cell id of the measurement. Just as the conditions for triggering L1 signal measurements are pre-configured, the network node can also configure the way the UE 106 transmits the report of the L1 signal measurement. For example, the network node can configure the duration for which the UE 106 transmits the report. The network node can also configure the number of reports transmitted during the reporting period. If multiple reports are transmitted, the network node can further configure the periodicity of the reports. In some examples, the network node can also configure the UE 106 to transmit the report via a DCI signal (e.g., L1 signaling) or via a MAC CE signal (e.g., L2 signaling).

[0130] The network node can provide different reporting configurations to the UE 106. Additionally, the network node can provide one or more thresholds that the UE 106 can use to determine which reporting configuration to use (e.g., determine the active reporting configuration). The thresholds for the reporting configuration can be the same as those for triggering L1 signal measurements or can be different thresholds. Some example thresholds for determining the reporting configuration can include a UE mobility threshold and / or a channel strength threshold. For example, if the UE 106 determines that the UE has moved more than x meters, the UE 106 can use reporting configuration A. If the UE 106 determines that the channel strength on a particular cell has decreased by more than y dB, the UE 106 can use reporting configuration B. In other examples, the network node can signal an explicit indication (e.g., using a MAC CE or DCI) that indicates to the UE 106 which reporting configuration to use. In other examples, the UE 106 can be configured to determine the reporting configuration based on a combination of thresholds and / or explicit signaling from the network node.

[0131] Thus, in one example of the present disclosure, the UE 106 can be configured to receive from the network node a reporting configuration that includes reporting parameters for reporting one or more L1 signal measurements and transmit to the network node a report of the one or more L1 signal measurements based on these reporting parameters. In one example, the reporting parameters indicate one or more of the duration of the report, the number of reports, or the periodicity of multiple reports.

[0132] In another example, the UE 106 is configured to receive multiple configurations, where each of the multiple configurations includes one or more of measurement parameters for performing one or more L1 signal measurements or reporting parameters for reporting one or more L1 signal measurements. The UE 106 can determine an active configuration from the multiple configurations and operate according to the active configuration. In one example, to determine the active configuration from the multiple configurations, the UE 106 is configured to determine the active configuration from the multiple configurations based on one or more of UE mobility conditions or channel strength measurements. In another example, to determine the active configuration from the multiple configurations, the UE 106 is configured to receive a configuration signal from a network node indicating the active configuration among the multiple configurations. In one example, the configuration signal is one or more of a DCI signal or a MAC CE signal.

[0133] The reporting parameters and configurations can be separated from the configuration of the conditions triggering the L1 signal measurements or the measurement configurations, or can be included in the same RRC configuration as the conditions and measurement configurations.

[0134] UE-triggered L1 signal measurement report resources

[0135] The network node can also configure (e.g., via RRC signaling) the resources on which the UE 106 will transmit the L1 signal measurement report. The network node can pre-configure the resources to be used at initial access or any RRC reconfiguration for the UE 106. The resources on which the UE 106 can send the L1 signal measurement report can be represented in the time domain, frequency domain, or spatial (e.g., beam) domain. The network node can pre-configure multiple resources for the UE, and each of these resources can be associated with the above-mentioned specific reporting configurations. In some examples, each reporting configuration can be associated with multiple resources. The UE 106 can also be configured to couple UE-triggered L1 signal measurements and reports with existing periodic L1 reports. In other examples, the network node can provide (e.g., un-pre-configured) on-demand dynamic resource grants to the UE 106 via DCI scheduling uplink transmissions.

[0136] In one example, the UE 106 can receive a resource configuration from a network node that includes one or more resource parameters for reporting one or more L1 signal measurements, where the one or more resource parameters indicate one or more resources; and transmit a report of the one or more L1 signal measurements to the network node based on the resource parameters. In one example, the one or more resource parameters include one or more of the time, frequency, or beam on which to transmit the report. In one example, the UE 106 can receive, via RRC signaling, a resource configuration from the network node that includes the one or more resource parameters.

[0137] In another example, the UE 106 may receive a dynamic resource grant from a network node to be used for reporting one or more L1 signal measurements, and transmit a report of one or more L1 signal measurements to the network node based on the dynamic resource grant. In one example, the UE 106 may receive the dynamic resource grant from the network node via DCI signaling.

[0138] UE-triggered L1 signal measurement report filtering

[0139] The UE 106 may be configured not only to calculate L1 signal measurements; in some examples, the UE 106 may be configured to filter the L1 signal measurements in order to eliminate jitter, noise, or random errors in the measurements. In some examples, the UE 106 may transmit the L1 signal measurements to the network node without filtering, and the network node may perform the filtering.

[0140] In one example, the UE 106 and / or the network node may perform a weighted filter on the L1 signal measurements, such as an infinite impulse response (IIR) filter. An example filtering algorithm is shown below:

[0141] M(t) = a * M(t - 1)+(1 - a) * B(t), where t = 0, 1, 2, …

[0142] In this example, M(t) is the L1 signal measurement reported at time t, M(t - 1) is the previously reported L1 signal measurement at time t - 1, and B(t) is the currently calculated L1 signal measurement at time t, and the variable a is the weight (e.g., a weight having a value less than or equal to 1). As can be seen in the above equation, the L1 signal measurement reported at time (M(t)) is a linear weighted combination of the current measurement and the previously reported measurement.

[0143] The network node may pre - configure a filtering scheme for the UE 106 to apply when triggering multiple measurements and reports. The network node may pre - configure a filter model and filtering parameters (e.g., filter coefficients and weights) for the UE 106. The network node may also pre - configure multiple filtering schemes for the UE 106, and these filtering schemes may be configured and switched using MAC - CE or DCI signaling.

[0144] In one example, the UE 106 may be configured to filter one or more L1 signal measurements before transmitting a report. In this example, the UE 106 may receive from a network node a filtering configuration including filtering parameters for filtering one or more L1 signal measurements, and filter the one or more L1 signal measurements based on these filtering parameters before transmitting the report. The filtering parameters may include one or more of filter coefficients or a filter model. The UE 106 may receive a filtering configuration that includes filtering parameters in one or more of a DCI signal or a MAC-CE signal.

[0145] RRC configuration for UE-triggered L1 signal measurement

[0146] As discussed above, the network node may use RRC signaling to configure any one of the following parameters for the UE 106:

[0147] - UE-triggered measurements and reporting trigger conditions

[0148] - Number of reports triggered at once (duration and periodicity)

[0149] - Report resource utilization options

[0150] - Filtering strategy and related parameters

[0151] Multiple parameters may be configured or reconfigured by RRC, and the network node may use MAC-CE or DCI to switch the configuration. In some examples, before configuring any one of the above parameters for the UE 106, the UE 106 may be configured to signal ability information to the network node. The ability information may indicate UE capabilities regarding L1 signal measurements, predicted blocking techniques, filtering capabilities, or other constraints the UE may have. For example, the capabilities may indicate the number of L1 signal measurements the UE is capable of performing within a specific time period. The ability information may indicate any predicted blocking techniques the UE is capable of performing. The network node may use the ability information to determine one or more of the above parameters and preconfigure the UE appropriately.

[0152] Figure 7 is a block diagram illustrating an example of a hardware implementation of a network node 700 employing a processing system 714. For example, the network node 700 may be a base station and / or gNB, gNB-CU, DU, or other network node exemplified in any one or more of Figure 1 、 Figure 2 、 Figure 3 and / or Figure 6 。

[0153] Network node 700 may include a processing system 714 having one or more processors 704. Examples of processors 704 include microprocessors, microcontrollers, digital signal processors (DSPs), field programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functions described throughout this disclosure. In various examples, network node 700 may be configured to perform any one or more of the functions described herein. For example, processor 704 as utilized in network node 700 may be configured to (e.g., in coordination with memory 705) implement any one or more of the processes and procedures for UE-triggered L1 measurements for inter-L1 / L2 cell mobility described above and further illustrated in Figure 9 any one or more of the processes and procedures for UE-triggered L1 measurements for inter-L1 / L2 cell mobility as exemplified in

[0154] The processing system 714 may be implemented using a bus architecture generally represented by bus 702. Bus 702 may include any number of interconnecting buses and bridges depending on the specific application of the processing system 714 and overall design constraints. Bus 702 communicatively couples various circuits including one or more processors (generally represented by processor 704), memory 705, and a computer-readable medium (generally represented by computer-readable medium 706). Bus 702 may also link various other circuits such as timing sources, peripheral devices, voltage regulators, and power management circuits, which are well known in the art and will not be described further herein. Bus interface 708 provides an interface between bus 702 and transceiver 710. Transceiver 710 provides a communication interface or component for communicating with various other devices via a transmission medium. Depending on the nature of the device, a user interface 712 (e.g., keypad, display, speaker, microphone, joystick) may also be provided. Of course, such a user interface 712 is optional and may be omitted in some examples such as base stations.

[0155] In some aspects of the present disclosure, processor 704 may include an inter-cell mobility configuration circuit 740 configured (e.g., in coordination with memory 705) for various functions including, for example, transmitting to a UE one or more conditions for one or more L1 signal measurements for one or more cells in a set of cells configured for inter-cell mobility triggering for the UE according to any one of the techniques described above. In addition to the conditions for triggering L1 signal measurements, the inter-cell mobility configuration circuit 740 may also be configured to configure a reporting configuration for L1 signal measurements, configure a resource allocation for reporting L1 signal measurements, and / or configure parameters for filtering L1 signal measurements according to any combination of the techniques described above.

[0156] The processor 704 may also include a serving cell update circuit 742 configured (e.g., in coordination with the memory 705) for various functions, including, for example, receiving reports of one or more L1 signal measurements from the UE according to any combination of the techniques described above; and performing inter-cell mobility operations based on the one or more L1 signal measurements; and performing inter-cell mobility operations based on the one or more L1 signal measurements, such as updating the serving cell (e.g., SpCell) and / or updating the cells in the active set of cells.

[0157] The processor 704 is responsible for managing the bus 702 and general processing, including executing software stored on the computer-readable medium 706. When executed by the processor 704, the software causes the processing system 714 to perform the various functions described below for any particular device. The processor 704 may also use the computer-readable medium 706 and the memory 705 to store data that the processor 704 manipulates when executing the software.

[0158] One or more processors 704 in the processing system may execute software. Software should be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software modules, applications, software applications, software packages, routines, subroutines, objects, executable files, threads of execution, procedures, functions, etc., whether referred to as software, firmware, middleware, microcode, hardware description language, or otherwise. The software may reside on the computer-readable medium 706. The computer-readable medium 706 may be a non-transitory computer-readable medium. By way of example, one or more non-transitory computer-readable media include magnetic storage devices (e.g., hard disks, floppy disks, magnetic strips), optical disks (e.g., compact disc (CD) or digital versatile disc (DVD)), smart cards, flash memory devices (e.g., cards, sticks, or key drives), random access memory (RAM), read-only memory (ROM), programmable ROM (PROM), erasable PROM (EPROM), electrically erasable PROM (EEPROM), registers, removable disks, and any other suitable medium for storing software and / or instructions that can be accessed and read by a computer. The computer-readable medium 706 may reside within the processing system 714, outside the processing system 714, or be distributed across multiple entities including the processing system 714. The computer-readable medium 706 may be embodied as a computer program product. By way of example, the computer program product may include the computer-readable medium in a package material. Those skilled in the art will recognize how best to implement the described functionality presented throughout this disclosure, depending on the particular application and overall design constraints imposed on the overall system.

[0159] In one or more examples, a computer-readable storage medium 706 may store computer-executable code including inter-cell mobility configuration instructions 752 that configure network node 700 for various functions, including, for example, transmitting to a UE, according to any of the techniques described above, one or more L1 signal measurement conditions for one or more cells in a set of cells for which configuration for inter-cell mobility is triggered for the UE. In addition to the conditions for triggering L1 signal measurements, the inter-cell mobility configuration instructions 752 may also be configured to configure a reporting configuration for L1 signal measurements, configure resource allocation for reporting L1 signal measurements, and / or configure parameters for filtering L1 signal measurements, according to any combination of the techniques described above.

[0160] The computer-readable medium 706 may also include serving cell update instructions 754 that may cause network node 700 to receive a report of one or more L1 signal measurements from a UE; and perform inter-cell mobility operations based on the one or more L1 signal measurements; and perform inter-cell mobility operations based on the one or more L1 signal measurements, such as updating a serving cell (e.g., SpCell) and / or updating cells in an active set of cells, according to any combination of the techniques described above.

[0161] In one configuration, an apparatus for wireless communication includes components for performing the techniques of the present disclosure. In one aspect, the foregoing components may be the processor 704 shown in Figure 7 and configured to perform the functions recited by the foregoing components. In another aspect, the foregoing components may be a circuit or any apparatus configured to perform the functions recited by the foregoing components.

[0162] Of course, in the above example, the circuitry included in the processor 704 is provided merely as an example, and other components for performing the described functions may be included in various aspects of the present disclosure, including but not limited to instructions stored in the computer-readable storage medium 706 or in Figure 1 、 Figure 2 、 Figure 3 and / or Figure 6 described and utilizing, for example, any other suitable apparatus or component described herein with respect to Figure 9 and the processes and / or algorithms described.

[0163] Figure 8 is a conceptual diagram illustrating an example of a hardware implementation of an exemplary UE 800 employing a processing system 814. According to various aspects of the present disclosure, the processing system 814 may include an element, or any portion of an element, or any combination of elements, having one or more processors 804. For example, the UE 800 may be asFigure 1 , Figure 2 , Figure 3 and / or Figure 6 a UE exemplified in any one or more of them.

[0164] The processing system 814 can be substantially the same as the processing system 714 exemplified in Figure 7 , which includes a bus interface 808, a bus 802, a memory 805, a processor 804, and a computer-readable medium 806. Additionally, the UE 800 can include a user interface 812 and a transceiver 810 that are substantially similar to those described above in Figure 7 . That is, the processor 804 utilized in the UE 800 can be configured to (e.g., in coordination with the memory 805) implement any one or more of the processes described below and exemplified in Figure 10 .

[0165] In some aspects of the present disclosure, the processor 804 can include an L1 measurement circuit 840 that is configured (e.g., in coordination with the memory 805) for various functions, including, for example, determining a first condition for triggering inter-cell mobility to perform one or more L1 signal measurements for a configured set of cells of the UE according to any combination of the examples described above; and performing one or more L1 signal measurements for one or more cells in the configured set of cells of the UE based on determining that the first condition is triggered. The processor 804 can also include an L1 measurement reporting circuit 842 that is configured to transmit a report of one or more L1 signal measurements to a network node according to any one of the examples described above.

[0166] The computer-readable storage medium 806 can store computer-executable code including L1 measurement instructions 852 that configure the UE 800 for various functions, including, for example, determining a first condition for triggering inter-cell mobility to perform one or more L1 signal measurements for a configured set of cells of the UE according to any combination of the examples described above. The computer-readable storage medium 806 can also include L1 signal measurement reporting instructions 854 that transmit a report of one or more L1 signal measurements to a network node according to any one of the examples described above.

[0167] In one configuration, a device for wireless communication includes components for performing the techniques of the present disclosure. In one aspect, the foregoing components can be the processor 804 shown in Figure 8 , which is configured to perform the functions recited by the foregoing components. In another aspect, the foregoing components can be a circuit or any device configured to perform the functions recited by the foregoing components.

[0168] Of course, in the above example, the circuitry included in the processor 804 is provided only as an example, and other components for performing the functions described above may be included in various aspects of the present disclosure, including but not limited to being stored in the computer-readable storage medium 806 or Figure 1 , Figure 2 , Figure 3 and / or Figure 6 any other suitable device or component described in any of the foregoing, and utilizing instructions for processes and / or algorithms such as those described herein with respect to Figure 10 .

[0169] Figure 9 is a flowchart illustrating an exemplary process for configuring a UE to perform UE-triggered L1 signal measurements for L1 / L2 inter-cell mobility according to some aspects of the present disclosure. As described below, specific embodiments may omit some or all of the illustrated features, and some of the illustrated features may not be required to implement all examples. In some examples, Figure 7 the network node 700 illustrated in Figure 9 may be configured to perform the process of Figure 9 . In some examples, any suitable device or component for performing the functions or algorithms described below may perform the process of

[0170] In one example, a network node (such as the network node 700 of Figure 7 ) may be configured to transmit to a UE one or more conditions (900) for triggering one or more L1 signal measurements for one or more cells in a configured set of cells for the UE for inter-cell mobility. The network node 700 may receive a report (902) of one or more L1 signal measurements from the UE. The network node may then perform inter-cell mobility operations (904) based on the one or more L1 signal measurements. As discussed above, in some examples of the present disclosure, performing inter-cell mobility operations may include one or more of the following: updating the serving cell (e.g., SpCell) in the active set of cells in the configured set of cells and / or designating a particular cell in the configured set of cells as being in the active set of cells.

[0171] Figure 10 is a flowchart illustrating an exemplary process for UE-triggered L1 signal measurements for L1 / L2 inter-cell mobility according to some aspects of the present disclosure. As described below, specific embodiments may omit some or all of the illustrated features, and some of the illustrated features may not be required to implement all examples. In some examples, Figure 8 the UE 800 illustrated in Figure 10The process. In some examples, any suitable apparatus or component for performing the functions or algorithms described below may perform Figure 10 the process.

[0172] In one example, the UE 800 may be configured to determine a first condition (1000) for triggering one or more L1 signal measurements for inter-cell mobility. The UE 800 may perform one or more L1 signal measurements (1002) for one or more cells in a set of cells configured for the UE based on determining that the first condition is triggered; and transmit a report of the one or more L1 signal measurements to a network node (1004).

[0173] The following numbered clauses illustrate one or more aspects of the devices and techniques described in this disclosure.

[0174] Aspect 1 - A user equipment (UE) for wireless communication, the UE comprising: a memory; and a processor communicatively coupled to the memory, the processor being configured to: determine a first condition for triggering one or more layer 1 (L1) signal measurements for inter-cell mobility; perform the one or more L1 signal measurements for one or more cells in a set of cells configured for the UE based on determining that the first condition is triggered; and transmit a report of the one or more L1 signal measurements to a network node.

[0175] Aspect 2 - The UE according to aspect 1, wherein the processor is further configured to: receive from the network node one or more conditions for triggering the one or more L1 signal measurements, wherein the one or more conditions include the first condition.

[0176] Aspect 3 - The UE according to aspect 2, wherein the processor is further configured to: receive the one or more conditions from the network node via radio resource control (RRC) signaling.

[0177] Aspect 4 - The UE according to aspect 2, wherein the one or more conditions include one or more of a UE mobility condition, a channel strength measurement condition associated with the configured set of cells, or a predicted blockage condition.

[0178] Aspect 5 - The UE according to aspect 4, wherein the first condition is a UE mobility condition, wherein the UE mobility condition is a movement distance threshold of the UE, and wherein the processor is further configured to: determine a movement distance of the UE; compare the movement distance with the movement distance threshold to generate a comparison result; and determine the UE mobility condition for triggering the one or more L1 signal measurements for inter-cell mobility based on the comparison result.

[0179] Aspect 6 - The UE according to aspect 4, wherein the first condition is the channel strength measurement condition, wherein the channel strength measurement condition is a channel strength threshold of one or more cells in the configured cell set, and wherein the processor is further configured to: determine the channel strength of at least one cell among the one or more cells in the configured cell set; compare the channel strength with the channel strength threshold to generate a comparison result; and determine, based on the comparison result, the channel strength measurement condition for triggering the execution of the one or more L1 signal measurements for inter-cell mobility.

[0180] Aspect 7 - The UE according to aspect 4, wherein the first condition is the predicted blocking condition, and wherein the processor is further configured to: perform a predicted blocking process to determine a predicted blocking value; compare the predicted blocking value with the predicted blocking condition to generate a comparison result; and determine, based on the comparison result, the predicted blocking condition for triggering the execution of the one or more L1 signal measurements for inter-cell mobility.

[0181] Aspect 8 - The UE according to aspect 1, wherein the processor is further configured to: receive a measurement configuration from the network node, the measurement configuration including one or more measurement parameters for performing the one or more L1 signal measurements; and perform the one or more L1 signal measurements on the one or more cells in the configured cell set based on the one or more measurement parameters.

[0182] Aspect 9 - The UE according to aspect 8, wherein the one or more measurement parameters indicate one or more specific cells among the one or more cells in the configured cell set for which the one or more L1 signal measurements are to be performed.

[0183] Aspect 10 - The UE according to aspect 1, wherein the processor is further configured to: receive a reporting configuration from the network node, the reporting configuration including reporting parameters for reporting the one or more L1 signal measurements; and transmit the report of the one or more L1 signal measurements to the network node based on the reporting parameters.

[0184] Aspect 11 - The UE according to aspect 10, wherein the reporting parameters indicate one or more of the duration of the report, the number of reports, or the periodicity of multiple reports.

[0185] Aspect 12 - The UE according to aspect 1, wherein the processor is further configured to: receive a plurality of configurations, each of the plurality of configurations including one or more of measurement parameters for performing one or more L1 signal measurements or reporting parameters for reporting the one or more L1 signal measurements; determine an active configuration from the plurality of configurations; and operate according to the active configuration.

[0186] Aspect 13 - The UE according to aspect 12, wherein in order to determine the active configuration from the plurality of configurations, the processor is configured to: determine the active configuration from the plurality of configurations based on one or more of UE mobility conditions or channel strength measurements.

[0187] Aspect 14 - The UE according to aspect 12, wherein in order to determine the active configuration from the plurality of configurations, the processor is configured to: receive a configuration signal from the network node indicating the active configuration among the plurality of configurations.

[0188] Aspect 15 - The UE according to aspect 14, wherein the configuration signal is one or more of a downlink control information (DCI) signal or a media access control (MAC) control element (MAC-CE) signal.

[0189] Aspect 16 - The UE according to aspect 1, wherein the processor is further configured to: receive a resource configuration from the network node including one or more resource parameters for reporting the one or more L1 signal measurements, the one or more resource parameters indicating one or more resources; and transmit the report of the one or more L1 signal measurements to the network node based on the resource parameters.

[0190] Aspect 17 - The UE according to aspect 16, wherein the one or more resource parameters include one or more of a time, frequency, or beam on which the report is transmitted.

[0191] Aspect 18 - The UE according to aspect 16, wherein the processor is further configured to: receive the resource configuration including the one or more resource parameters from the network node via radio resource control (RRC) signaling.

[0192] Aspect 19 - The UE according to aspect 1, wherein the processor is further configured to: receive a dynamic resource grant from the network node to be used for reporting the one or more L1 signal measurements; and transmit the report of the one or more L1 signal measurements to the network node based on the dynamic resource grant.

[0193] Aspect 20 - The UE according to aspect 19, wherein the processor is further configured to receive the dynamic resource grant from the network node via downlink control information (DCI) signaling.

[0194] Aspect 21 - The UE according to aspect 1, wherein the processor is further configured to filter the one or more L1 signal measurements before transmitting the report.

[0195] Aspect 22 - The UE according to aspect 21, wherein the processor is further configured to receive a filtering configuration from the network node, the filtering configuration including filtering parameters for filtering the one or more L1 signal measurements; and filter the one or more L1 signal measurements based on the filtering parameters before transmitting the report.

[0196] Aspect 23 - The UE according to aspect 22, wherein the filtering parameters include one or more of filter coefficients or a filter model.

[0197] Aspect 24 - The UE according to aspect 22, wherein the processor is further configured to:

[0198] receive a filtering configuration, the filtering configuration including filtering parameters in one or more of a downlink control information (DCI) signal or a media access control (MAC) control element (CE) signal.

[0199] Aspect 25 - The UE according to aspect 1, wherein the one or more L1 signal measurements include one of a reference signal received power (RSRP) measurement or a signal-to-interference-plus-noise ratio (SINR) measurement.

[0200] Aspect 26 - The UE according to aspect 1, wherein in order to perform the one or more L1 signal measurements of the one or more cells in the configured cell set, the processor is configured to: perform the one or more L1 signal measurements of one or more cells in the active cell set in the configured cell set; perform the one or more L1 signal measurements of one or more cells in the deactivated cell set in the configured cell set; or perform the one or more L1 signal measurements of one or more cells in the active cell set in the configured cell set and perform the one or more L1 signal measurements of one or more cells in the deactivated cell set in the configured cell set.

[0201] Aspect 27 - The UE according to aspect 1, wherein the processor is further configured to: receive L1 signaling or layer 2 (L2) signaling from the network node, the L1 signaling or the layer 2 (L2) signaling indicating an updated serving cell in the set of active cells based on the L1 signal measurements.

[0202] Aspect 28 - The UE according to aspect 27, wherein the L1 signaling is downlink control information (DCI) signaling, the L2 signaling is medium access control (MAC) control element (CE) signaling, and the serving cell is a special cell (SpCell).

[0203] Aspect 29 - A method for wireless communication, the method comprising: determining, at a user equipment (UE), a first condition for triggering one or more layer 1 (L1) signal measurements for inter-cell mobility; performing, based on determining that the first condition is triggered, the one or more L1 signal measurements for one or more cells in a configured set of cells for the UE; and transmitting a report of the one or more L1 signal measurements to a network node.

[0204] Aspect 30 - The method according to aspect 29, further comprising: receiving, from the network node, one or more conditions for triggering the one or more L1 signal measurements, wherein the one or more conditions include the first condition.

[0205] Aspect 31 - The method according to aspect 30, further comprising: receiving the one or more conditions from the network node via radio resource control (RRC) signaling.

[0206] Aspect 32 - The method according to aspect 30, wherein the one or more conditions include one or more of a UE mobility condition, a channel strength measurement condition associated with the configured set of cells, or a predicted blockage condition.

[0207] Aspect 33 - The method according to aspect 32, wherein the first condition is the UE mobility condition, wherein the UE mobility condition is a movement distance threshold of the UE, and wherein the method further comprises: determining the movement distance of the UE; comparing the movement distance with the movement distance threshold to generate a comparison result; and determining, based on the comparison result, the UE mobility condition for triggering the one or more L1 signal measurements for inter-cell mobility.

[0208] Aspect 34 - The method according to aspect 32, wherein the first condition is the channel strength measurement condition, wherein the channel strength measurement condition is a channel strength threshold of one or more cells in the configured cell set, and wherein the method further comprises: determining a channel strength of at least one cell among the one or more cells in the configured cell set; comparing the channel strength with the channel strength threshold to generate a comparison result; and determining, based on the comparison result, the channel strength measurement condition for triggering inter-cell mobility to perform the one or more L1 signal measurements.

[0209] Aspect 35 - The method according to aspect 23, wherein the first condition is the predicted blocking condition, and wherein the method further comprises: performing a predicted blocking process to determine a predicted blocking value; comparing the predicted blocking value with the predicted blocking condition to generate a comparison result; and determining, based on the comparison result, the predicted blocking condition for triggering inter-cell mobility to perform the one or more L1 signal measurements.

[0210] Aspect 36 - The method according to aspect 29, further comprising: receiving, from the network node, a measurement configuration, the measurement configuration including one or more measurement parameters for performing the one or more L1 signal measurements; and performing the one or more L1 signal measurements on the one or more cells in the configured cell set based on the one or more measurement parameters.

[0211] Aspect 37 - The method according to aspect 36, wherein the one or more measurement parameters indicate one or more specific cells among the one or more cells in the configured cell set for which the one or more L1 signal measurements are to be performed.

[0212] Aspect 38 - The method according to aspect 29, further comprising: receiving, from the network node, a reporting configuration, the reporting configuration including reporting parameters for reporting the one or more L1 signal measurements; and transmitting the report of the one or more L1 signal measurements to the network node based on the reporting parameters.

[0213] Aspect 39 - The method according to aspect 38, wherein the reporting parameters indicate one or more of a duration of the report, a number of reports, or a periodicity of multiple reports.

[0214] Aspect 40 - The method according to aspect 29 further includes: receiving a plurality of configurations, where each configuration of the plurality of configurations includes one or more of measurement parameters for performing one or more L1 signal measurements or reporting parameters for reporting the one or more L1 signal measurements; determining an active configuration from the plurality of configurations; and operating according to the active configuration.

[0215] Aspect 41 - The method according to aspect 40, wherein determining the active configuration from the plurality of configurations includes: determining the active configuration from the plurality of configurations based on one or more of UE mobility conditions or channel strength measurements.

[0216] Aspect 42 - The method according to aspect 40, wherein determining the active configuration from the plurality of configurations includes: receiving a configuration signal from the network node indicating the active configuration among the plurality of configurations.

[0217] Aspect 43 - The method according to aspect 42, wherein the configuration signal is a downlink control information (DCI) signal or a medium access control (MAC) control element (MAC-CE) signal.

[0218] Aspect 44 - The method according to aspect 29 further includes: receiving a resource configuration from the network node including one or more resource parameters for reporting the one or more L1 signal measurements, where the one or more resource parameters indicate one or more resources; and transmitting the report of the one or more L1 signal measurements to the network node based on the resource parameters.

[0219] Aspect 45 - The method according to aspect 44, wherein the one or more resource parameters include one or more of a time, frequency, or beam on which the report is transmitted.

[0220] Aspect 46 - The method according to aspect 44 further includes: receiving the resource configuration including the one or more resource parameters from the network node via radio resource control (RRC) signaling.

[0221] Aspect 47 - The method according to aspect 29 further includes: receiving a dynamic resource grant from the network node to be used for reporting the one or more L1 signal measurements; and transmitting the report of the one or more L1 signal measurements to the network node based on the dynamic resource grant.

[0222] Aspect 48 - The method according to aspect 47 further includes: receiving the dynamic resource grant from the network node via downlink control information (DCI) signaling.

[0223] Aspect 49 - The method according to aspect 29 further comprises: filtering the one or more L1 signal measurements before transmitting the report.

[0224] Aspect 50 - The method according to aspect 49 further comprises: receiving a filtering configuration from the network node, the filtering configuration comprising filtering parameters for filtering the one or more L1 signal measurements; and filtering the one or more L1 signal measurements based on the filtering parameters before transmitting the report.

[0225] Aspect 51 - The method according to aspect 50, wherein the filtering parameters comprise one or more of filter coefficients or a filter model.

[0226] Aspect 52 - The method according to aspect 50 further comprises: receiving the filtering configuration, the filtering configuration comprising filtering parameters in one or more of a downlink control information (DCI) signal or a medium access control (MAC) control element (CE) signal.

[0227] Aspect 53 - The method according to aspect 29, wherein the one or more L1 signal measurements comprise one of a reference signal received power (RSRP) measurement or a signal-to-interference-plus-noise ratio (SINR) measurement.

[0228] Aspect 54 - The method according to aspect 29, wherein performing the one or more L1 signal measurements on the one or more cells in the configured cell set comprises: performing the one or more L1 signal measurements on one or more cells in the active cell set in the configured cell set; performing the one or more L1 signal measurements on one or more cells in the deactivated cell set in the configured cell set; or performing the one or more L1 signal measurements on one or more cells in the active cell set in the configured cell set and performing the one or more L1 signal measurements on one or more cells in the deactivated cell set in the configured cell set.

[0229] Aspect 55 - The method according to aspect 29 further comprises:

[0230] receiving L1 signaling or layer 2 (L2) signaling from the network node, the L1 signaling or the layer 2 (L2) signaling indicating an updated serving cell in the active cell set based on the L1 signal measurements.

[0231] Aspect 56 - The method according to aspect 55, wherein the L1 signaling is downlink control information (DCI) signaling, the L2 signaling is medium access control (MAC) control element (CE) signaling, and the serving cell is a special cell (SpCell).

[0232] Aspect 57 - An apparatus, comprising components for performing the method according to Aspects 29 to 56.

[0233] Aspect 58 - A non - transitory computer - readable storage medium storing instructions which, when executed, cause one or more processors to perform the method according to Aspects 29 to 56.

[0234] Aspect 59 - A network node for wireless communication, the network node comprising: a memory; and a processor in communication with the memory, the processor being configured to: transmit to a user equipment (UE) one or more conditions for triggering, for inter - cell mobility, one or more layer 1 (L1) signal measurements for one or more cells in a set of configured cells for the UE; receive from the UE a report of the one or more L1 signal measurements; and perform an inter - cell mobility operation based on the one or more L1 signal measurements.

[0235] Aspect 60 - The network node according to Aspect 59, wherein the processor is further configured to: transmit the one or more conditions via radio resource control (RRC) signaling.

[0236] Aspect 61 - The network node according to Aspect 59, wherein the one or more conditions include one or more of a UE mobility condition, a channel strength measurement condition associated with the set of configured cells, or a predicted blockage condition.

[0237] Aspect 62 - The network node according to Aspect 59, wherein the processor is further configured to: transmit to the UE a measurement configuration, the measurement configuration including one or more measurement parameters for performing the one or more L1 signal measurements.

[0238] Aspect 63 - The network node according to Aspect 62, wherein the one or more measurement parameters indicate one or more specific cells in the one or more cells in the set of configured cells for which the one or more L1 signal measurements are to be performed.

[0239] Aspect 64 - The network node according to Aspect 59, wherein the processor is further configured to: transmit to the UE a report configuration, the report configuration including report parameters for reporting the one or more L1 signal measurements.

[0240] Aspect 65 - The network node according to Aspect 64, wherein the report parameters indicate one or more of the duration of the report, the number of reports, or the periodicity of multiple reports.

[0241] Aspect 66 - The network node according to aspect 59, wherein the processor is further configured to: transmit a plurality of configurations to the UE, wherein each configuration of the plurality of configurations includes one or more of measurement parameters for performing one or more L1 signal measurements or reporting parameters for reporting the one or more L1 signal measurements.

[0242] Aspect 67 - The network node according to aspect 66, wherein the processor is configured to: transmit a configuration signal to the UE indicating the active configuration among the plurality of configurations.

[0243] Aspect 68 - The network node according to aspect 67, wherein the configuration signal is one or more of a downlink control information (DCI) signal or a medium access control (MAC) control element (CE) signal.

[0244] Aspect 69 - The network node according to aspect 59, wherein the processor is further configured to: transmit a resource configuration to the UE including one or more resource parameters for reporting the one or more L1 signal measurements, wherein the one or more resource parameters indicate one or more resources.

[0245] Aspect 70 - The node according to aspect 69, wherein the one or more resource parameters include one or more of the time, frequency, or beam on which the report is transmitted.

[0246] Aspect 71 - The network node according to aspect 69, wherein the processor is further configured to: transmit the resource configuration including the one or more resource parameters via radio resource control (RRC) signaling.

[0247] Aspect 72 - The network node according to aspect 59, wherein the processor is further configured to: transmit a dynamic resource grant to the UE to be used for reporting the one or more L1 signal measurements.

[0248] Aspect 73 - The network node according to aspect 72, wherein the processor is further configured to: transmit the dynamic resource grant via downlink control information (DCI) signaling.

[0249] Aspect 74 - The network node according to aspect 59, wherein the processor is further configured to: filter the one or more L1 signal measurements.

[0250] Aspect 75 - The network node according to aspect 59, wherein the processor is further configured to: transmit a filtering configuration to the UE, the filtering configuration including filtering parameters for filtering the one or more L1 signal measurements.

[0251] Aspect 76 - The network node according to aspect 75, wherein the filtering parameter includes one or more of filter coefficients or a filter model.

[0252] Aspect 77 - The network node according to aspect 75, wherein the processor is further configured to: transmit the filtering configuration, the filtering configuration including filtering parameters in one or more of a downlink control information (DCI) signal or a media access control (MAC) control element (CE) signal.

[0253] Aspect 78 - The network node according to aspect 59, wherein the one or more L1 signal measurements include one of a reference signal received power (RSRP) measurement or a signal-to-interference-plus-noise ratio (SINR) measurement.

[0254] Aspect 79 - The network node according to aspect 59, wherein the one or more L1 signal measurements correspond to one or more cells in an active cell set in the configured cell set, correspond to one or more cells in a deactivated cell set in the configured cell set, or correspond to one or more cells in the active cell set in the configured cell set and one or more cells in the deactivated cell set in the configured cell set.

[0255] Aspect 80 - The network node according to aspect 59, wherein the processor is further configured to: transmit L1 signaling or layer 2 (L2) signaling to the UE, the L1 signaling or the layer 2 (L2) signaling indicating an updated serving cell in the active cell set based on the L1 signal measurements.

[0256] Aspect 81 - The network node according to aspect 80, wherein the L1 signaling is downlink control information (DCI) signaling, the L2 signaling is media access control (MAC) control element (CE) signaling, and the serving cell is a special cell (SpCell).

[0257] Aspect 82 - A method for wireless communication, the method including: transmitting to a user equipment (UE) one or more conditions for triggering one or more layer 1 (L1) signal measurements for one or more cells in a configured cell set of the UE for inter-cell mobility; receiving a report of the one or more L1 signal measurements from the UE; and performing an inter-cell mobility operation based on the one or more L1 signal measurements.

[0258] Aspect 83 - The method according to aspect 82, further including: transmitting the one or more conditions via radio resource control (RRC) signaling.

[0259] Aspect 84 - The method according to aspect 82, wherein the one or more conditions include one or more of a UE mobility condition, a channel strength measurement condition associated with the configured set of cells, or a predicted blockage condition.

[0260] Aspect 85 - The method according to aspect 82, further comprising: transmitting a measurement configuration to the UE, the measurement configuration including one or more measurement parameters for performing the one or more L1 signal measurements.

[0261] Aspect 86 - The method according to aspect 85, wherein the one or more measurement parameters indicate one or more specific cells in the one or more cells of the configured set of cells for which the one or more L1 signal measurements are to be performed.

[0262] Aspect 87 - The method according to aspect 82, further comprising: transmitting a reporting configuration to the UE, the reporting configuration including reporting parameters for reporting the one or more L1 signal measurements.

[0263] Aspect 88 - The method according to aspect 87, wherein the reporting parameters indicate one or more of the duration of the reporting, the number of reports, or the periodicity of multiple reports.

[0264] Aspect 89 - The method according to aspect 82, further comprising: transmitting a plurality of configurations to the UE, wherein each configuration of the plurality of configurations includes one or more of measurement parameters for performing one or more L1 signal measurements or reporting parameters for reporting the one or more L1 signal measurements.

[0265] Aspect 90 - The method according to aspect 89, further comprising: transmitting a configuration signal to the UE indicating the active configuration among the plurality of configurations.

[0266] Aspect 91 - The method according to aspect 90, wherein the configuration signal is one or more of a downlink control information (DCI) signal or a medium access control (MAC) control element (MAC-CE) signal.

[0267] Aspect 92 - The method according to aspect 82, further comprising: transmitting a resource configuration to the UE including one or more resource parameters for reporting the one or more L1 signal measurements, wherein the one or more resource parameters indicate one or more resources.

[0268] Aspect 93 - The method according to aspect 92, wherein the one or more resource parameters include one or more of the time, frequency, or beam on which the report is transmitted.

[0269] Aspect 94 - The method according to aspect 92 further comprises: transmitting the resource configuration including the one or more resource parameters via radio resource control (RRC) signaling.

[0270] Aspect 95 - The method according to aspect 82 further comprises: transmitting a dynamic resource grant to the UE to be used for reporting the one or more L1 signal measurements.

[0271] Aspect 96 - The method according to aspect 95 further comprises: transmitting the dynamic resource grant via downlink control information (DCI) signaling.

[0272] Aspect 97 - The method according to aspect 82 further comprises: filtering the one or more L1 signal measurements.

[0273] Aspect 98 - The method according to aspect 82 further comprises: transmitting a filtering configuration to the UE, the filtering configuration including filtering parameters for filtering the one or more L1 signal measurements.

[0274] Aspect 99 - The method according to aspect 98, wherein the filtering parameters include one or more of filter coefficients or a filter model.

[0275] Aspect 100 - The method according to aspect 98 further comprises: transmitting the filtering configuration, the filtering configuration including filtering parameters in one or more of a downlink control information (DCI) signal or a medium access control (MAC) control element (MAC-CE) signal.

[0276] Aspect 101 - The method according to aspect 82, wherein the one or more L1 signal measurements include one of a reference signal received power (RSRP) measurement or a signal-to-interference-plus-noise ratio (SINR) measurement.

[0277] Aspect 102 - The method according to aspect 82, wherein the one or more L1 signal measurements correspond to one or more cells in the active cell set of the configured cell set, correspond to one or more cells in the deactivated cell set of the configured cell set, or correspond to one or more cells in the active cell set of the configured cell set and one or more cells in the deactivated cell set of the configured cell set.

[0278] Aspect 103 - The method according to aspect 82 further comprises: transmitting L1 signaling or layer 2 (L2) signaling to the UE, the L1 signaling or the layer 2 (L2) signaling indicating an updated serving cell in the active cell set based on the L1 signal measurements.

[0279] Aspect 104 - The method according to aspect 103, wherein the L1 signaling is downlink control information (DCI) signaling, the L2 signaling is medium access control (MAC) control element (CE) signaling, and the serving cell is a special cell (SpCell).

[0280] Aspect 105 - An apparatus comprising components for performing the method according to aspects 82 to 104.

[0281] Aspect 106 - A non-transitory computer-readable storage medium storing instructions that, when executed, cause one or more processors to perform the method according to aspects 82 to 104.

[0282] Aspect 1B - A user equipment (UE) for wireless communication, the UE comprising: one or more memories; and one or more processors in communication with the one or more memories, the one or more processors being configured to: determine a first condition for triggering inter-cell mobility for performing one or more layer 1 (L1) signal measurements; perform the one or more L1 signal measurements for one or more cells in a configured set of cells for the UE based on determining that the first condition is triggered; and transmit a report of the one or more L1 signal measurements to a network node.

[0283] Aspect 2B - The UE according to aspect 1B, wherein the one or more processors are further configured to: receive from the network node one or more conditions for triggering the one or more L1 signal measurements, wherein the one or more conditions include the first condition.

[0284] Aspect 3B - The UE according to aspect 2B, wherein the one or more conditions include one or more of a UE mobility condition, a channel strength measurement condition associated with the configured set of cells, or a predicted blockage condition.

[0285] Aspect 4B - The UE according to aspect 3B, wherein the first condition is the channel strength measurement condition, wherein the channel strength measurement condition is a channel strength threshold for one or more cells in the configured set of cells, and wherein the one or more processors are further configured to: determine the channel strength of at least one cell in the one or more cells in the configured set of cells; compare the channel strength with the channel strength threshold to generate a comparison result; and determine the channel strength measurement condition for triggering inter-cell mobility for performing the one or more L1 signal measurements based on the comparison result.

[0286] Aspect 5B - The UE according to any one of Aspects 1B to 4B, wherein the one or more processors are further configured to: receive a measurement configuration from the network node, the measurement configuration including one or more measurement parameters for performing the one or more L1 signal measurements, wherein the one or more measurement parameters indicate one or more specific cells among the one or more cells in the configured cell set for which the one or more L1 signal measurements are to be performed; and perform the one or more L1 signal measurements on the one or more cells in the configured cell set based on the one or more measurement parameters.

[0287] Aspect 6B - The UE according to any one of Aspects 1B to 5B, wherein the one or more processors are further configured to: receive a reporting configuration from the network node, the reporting configuration including reporting parameters for reporting the one or more L1 signal measurements, wherein the reporting parameters indicate one or more of a duration of the reporting, a number of reports, or a periodicity of multiple reports; and transmit the report of the one or more L1 signal measurements to the network node based on the reporting parameters using a downlink control information (DCI) signal or using a medium access control (MAC) control element (CE) signal.

[0288] Aspect 7B - The UE according to any one of Aspects 1B to 6B, wherein the one or more processors are further configured to: receive a dynamic resource grant to be used for reporting the one or more L1 signal measurements from the network node; and transmit the report of the one or more L1 signal measurements to the network node based on the dynamic resource grant.

[0289] Aspect 8B - The UE according to any one of Aspects 1B to 7B, wherein the one or more processors are further configured to: receive a filtering configuration from the network node, the filtering configuration including filtering parameters for filtering the one or more L1 signal measurements; and filter the one or more L1 signal measurements based on the filtering parameters before transmitting the report.

[0290] Aspect 9B - The UE according to any one of Aspects 1B to 8B, wherein, in order to perform the one or more L1 signal measurements on the one or more cells in the configured set of cells, the one or more processors are configured to: perform the one or more L1 signal measurements on one or more cells in the active set of cells in the configured set of cells; perform the one or more L1 signal measurements on one or more cells in the deactivated set of cells in the configured set of cells; or perform the one or more L1 signal measurements on one or more cells in the active set of cells in the configured set of cells and perform the one or more L1 signal measurements on one or more cells in the deactivated set of cells in the configured set of cells.

[0291] Aspect 10B - A method for wireless communication, the method comprising: determining, at a user equipment (UE), a first condition for triggering one or more layer 1 (L1) signal measurements for inter-cell mobility; performing the one or more L1 signal measurements on one or more cells in a configured set of cells for the UE based on determining that the first condition is triggered; and transmitting a report of the one or more L1 signal measurements to a network node.

[0292] Aspect 11B - The method according to Aspect 10B, further comprising: receiving, from the network node, one or more conditions for triggering the one or more L1 signal measurements, wherein the one or more conditions include the first condition.

[0293] Aspect 12B - The method according to Aspect 11B, wherein the one or more conditions include one or more of a UE mobility condition, a channel strength measurement condition associated with the configured set of cells, or a predicted blockage condition.

[0294] Aspect 13B - The method according to Aspect 12B, wherein the first condition is the channel strength measurement condition, wherein the channel strength measurement condition is a channel strength threshold for one or more cells in the configured set of cells, and wherein the method further comprises: determining a channel strength of at least one cell in the one or more cells in the configured set of cells; comparing the channel strength with the channel strength threshold to generate a comparison result; and determining, based on the comparison result, the channel strength measurement condition for triggering the one or more L1 signal measurements for inter-cell mobility.

[0295] Aspect 14B - The method according to any one of Aspects 10B to 13B further includes: receiving a measurement configuration from the network node, the measurement configuration including one or more measurement parameters for performing the one or more L1 signal measurements, wherein the one or more measurement parameters indicate one or more specific cells in the configured cell set among the one or more cells for which the one or more L1 signal measurements are to be performed; and performing the one or more L1 signal measurements on the one or more cells in the configured cell set based on the one or more measurement parameters.

[0296] Aspect 15B - The method according to any one of Aspects 10B to 14B further includes: receiving a reporting configuration from the network node, the reporting configuration including reporting parameters for reporting the one or more L1 signal measurements, wherein the reporting parameters indicate one or more of the duration of the report, the number of reports, or the periodicity of multiple reports; and transmitting the report of the one or more L1 signal measurements to the network node based on the reporting parameters using a downlink control information (DCI) signal or using a medium access control (MAC) control element (CE) signal.

[0297] Aspect 16B - The method according to any one of Aspects 10B to 15B further includes: receiving a dynamic resource grant to be used for reporting the one or more L1 signal measurements from the network node; and transmitting the report of the one or more L1 signal measurements to the network node based on the dynamic resource grant.

[0298] Aspect 17B - The method according to any one of Aspects 10B to 16B further includes: receiving a filtering configuration from the network node, the filtering configuration including filtering parameters for filtering the one or more L1 signal measurements; and filtering the one or more L1 signal measurements based on the filtering parameters before transmitting the report.

[0299] Aspect 18B - In the method according to any one of Aspects 10B to 17B, performing the one or more L1 signal measurements on the one or more cells in the configured cell set includes: performing the one or more L1 signal measurements on one or more cells in the active cell set in the configured cell set; performing the one or more L1 signal measurements on one or more cells in the deactivated cell set in the configured cell set; or performing the one or more L1 signal measurements on one or more cells in the active cell set in the configured cell set and performing the one or more L1 signal measurements on one or more cells in the deactivated cell set in the configured cell set.

[0300] Aspect 19B - A network node for wireless communication, the network node comprising: one or more memories; and one or more processors in communication with the one or more memories, the one or more processors being configured to: transmit to a user equipment (UE) one or more conditions for one or more layer 1 (L1) signal measurements for one or more cells in a set of configured cells for inter-cell mobility triggering for the UE; receive from the UE a report of the one or more L1 signal measurements; and perform inter-cell mobility operations based on the one or more L1 signal measurements.

[0301] Aspect 20B - The network node according to aspect 19B, wherein the one or more conditions include one or more of a UE mobility condition, a channel strength measurement condition associated with the set of configured cells, or a predicted blockage condition.

[0302] Aspect 21B - The network node according to any one of aspects 19B to 20B, wherein the one or more processors are further configured to: transmit to the UE a measurement configuration, the measurement configuration including one or more measurement parameters for performing the one or more L1 signal measurements, wherein the one or more measurement parameters indicate one or more specific cells in the one or more cells in the set of configured cells for which the one or more L1 signal measurements are to be performed.

[0303] Aspect 22B - The network node according to any one of aspects 19B to 21B, wherein the one or more processors are further configured to: transmit to the UE a report configuration, the report configuration including report parameters for reporting the one or more L1 signal measurements, wherein the report parameters indicate one or more of the duration of the report, the number of reports, or the periodicity of multiple reports.

[0304] Aspect 23B - The network node according to any one of aspects 19B to 22B, wherein the one or more processors are further configured to: transmit to the UE a dynamic resource grant to be used for reporting the one or more L1 signal measurements.

[0305] Aspect 24B - The network node according to any one of aspects 19B to 23B, wherein the one or more processors are further configured to: filter the one or more L1 signal measurements.

[0306] Aspect 25B - A method for wireless communication, the method comprising:

[0307] Transmit to a user equipment (UE) one or more conditions for triggering one or more layer 1 (L1) signal measurements for one or more cells in a set of configured cells for inter-cell mobility for the UE; receive from the UE a report of the one or more L1 signal measurements; and perform inter-cell mobility operations based on the one or more L1 signal measurements.

[0308] Aspect 26B - The method according to aspect 25B, wherein the one or more conditions include one or more of a UE mobility condition, a channel strength measurement condition associated with the set of configured cells, or a predicted blockage condition.

[0309] Aspect 27B - The method according to any one of aspects 25B to 26B, further comprising: transmitting to the UE a measurement configuration, the measurement configuration including one or more measurement parameters for performing the one or more L1 signal measurements, wherein the one or more measurement parameters indicate one or more specific cells in the one or more cells in the set of configured cells for which the one or more L1 signal measurements are to be performed.

[0310] Aspect 28B - The method according to any one of aspects 25B to 27B, further comprising: transmitting to the UE a report configuration, the report configuration including report parameters for reporting the one or more L1 signal measurements, wherein the report parameters indicate one or more of a duration of the report, a number of reports, or a periodicity of multiple reports.

[0311] Aspect 29B - The method according to any one of aspects 25B to 28B, further comprising: transmitting to the UE a dynamic resource grant to be used for reporting the one or more L1 signal measurements.

[0312] Aspect 30B - The method according to any one of aspects 25B to 29B, further comprising: filtering the one or more L1 signal measurements.

[0313] The detailed description set forth above in connection with the accompanying drawings is intended as a description of various configurations and is not intended to represent the only configurations in which the concepts described herein may be practiced. To provide a thorough understanding of the various concepts, the detailed description includes specific details. However, one of ordinary skill in the art will readily recognize that the concepts may be practiced without these specific details. In some instances, well-known structures and components are presented in block diagram form in order to avoid obscuring such concepts.

[0314] While this specification describes certain aspects and examples with reference to some illustrations, those skilled in the art will understand that additional specific implementations and use cases may arise in many different arrangements and scenarios. The innovations described herein can be implemented across many different platform types, devices, systems, shapes, sizes, and packaging arrangements. For example, the specific implementations and / or uses can be generated via integrated circuit (IC) implementations and other non-module-component-based devices (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail / shopping devices, medical devices, artificial intelligence (AI)-enabled devices, etc.). Although some examples may or may not specifically be directed to a use case or application, a wide variety of applicability of the described innovations can occur. The specific implementations can span a spectrum from chip-level or modular components to non-modular, non-chip-level implementations and further to the spectrum of aggregated, distributed, or original equipment manufacturer (OEM) devices or systems that incorporate one or more aspects of the disclosed technology. In some practical settings, the devices incorporating the aspects and features described may also necessarily include additional components and features for the implementation and practice of the claimed and described examples. For example, the transmission and reception of wireless signals includes several components for analog and digital purposes (e.g., hardware components, including antennas, radio frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders / summers, etc.). It is intended that the disclosed technology can be practiced in a variety of devices, chip-level components, systems, distributed arrangements, end-user devices, etc., having various sizes, shapes, and configurations.

[0315] By way of example, aspects of the present disclosure can be implemented within systems defined by 3GPP, such as Fifth Generation New Radio (5G NR), Long Term Evolution (LTE), Evolved Packet System (EPS), Universal Mobile Telecommunications System (UMTS), and / or Global System for Mobile Communications (GSM). The aspects can also extend to systems defined by the Third Generation Partnership Project 2 (3GPP2), such as CDMA2000 and / or Evolution-Data Optimized (EV-DO). Other examples can be implemented within systems employing IEEE 802.11 (Wi-Fi), IEEE 802.16 (WiMAX), IEEE 802.20, Ultra-Wideband (UWB), Bluetooth, and / or other suitable systems. The actual telecommunications standards, network architectures, and / or communication standards employed will depend on the specific application and the overall design constraints imposed on the system.

[0316] The present disclosure uses the term "exemplary" to mean "serving as an example, instance, or illustration". Any particular implementation or aspect described herein as "exemplary" is not necessarily to be construed as superior to or better than other aspects of the present disclosure. Similarly, the term "aspect" does not require that all aspects of the present disclosure include the discussed feature, advantage, or mode of operation. The present disclosure uses the terms "coupled" and / or "communicatively coupled" to refer to either a direct or an indirect coupling between two objects. For example, if object A physically touches object B, and object B touches object C, then objects A and C may still be considered to be coupled to each other, even if they do not directly physically touch each other. For instance, a first object may be coupled to a second object even if the first object has never directly physically touched the second object. The present disclosure uses the term "circuit" broadly to include both hardware implementations of electronic devices and conductors (where these electronic devices and conductors, when connected and configured, perform the functions described in the present disclosure, with no limitation as to the type of electronic circuit) and software implementations of information and instructions (where these information and instructions, when executed by a processor, perform the functions described in the present disclosure).

[0317] Figures 1 to 1 One or more of the components, steps, features, and / or functions illustrated in 1 may be rearranged and / or combined into a single component, step, feature, or function, or may be embodied in several components, steps, or functions. Additional elements, components, steps, and / or functions may also be added without departing from the features disclosed herein. Figures 1 to 1 The apparatus, device, and / or component illustrated in 1 may be configured to perform one or more of the methods, features, or steps described herein. The techniques described herein may also be efficiently implemented in software and / or embedded in hardware.

[0318] It should be understood that the specific order or hierarchy of steps in the disclosed methods is an illustration of an exemplary process. It should be understood that, based on design preferences, the specific order or hierarchy of steps in these methods may be rearranged. The appended method claims present elements of the various steps in an example order, but are not meant to be limited to the specific order or hierarchy given, unless specifically stated herein.

[0319] The applicant provides this description to enable any person skilled in the art to practice the various aspects described herein. Those skilled in the art will readily recognize various modifications to these aspects, and can apply the general principles defined herein to other aspects. The applicant does not intend the claims to be limited to the aspects shown herein, but rather should be accorded the full scope consistent with the language of the claims, where the reference to an element in the singular is not intended to mean "one and only one" but "one or more" unless specifically stated otherwise. Unless specifically stated otherwise, the present disclosure uses the term "some" to refer to one or more. A phrase referring to "at least one" of a list of items refers to any combination of those items, including a single member. As an example, "at least one of a, b, or c" is intended to cover: a; b; c; a and b; a and c; b and c; and a, b, and c. All structural and functional equivalents of the elements of the various aspects described throughout this disclosure that are known or later will be known to those of ordinary skill in the art are expressly incorporated herein by reference and are intended to be covered by the claims. In addition, nothing disclosed herein is intended to be dedicated to the public regardless of whether such disclosure is explicitly recited in the claims. No element of any claim should be construed under the provisions of 35 U.S.C. § 112(f) unless the element is expressly recited using the phrase "means for" or, in the case of a method claim, the phrase "step for".

[0320] Various examples have been described. These and other examples are within the scope of the following claims.

Claims

1. A user equipment (UE) for wireless communication, the UE comprising: One or more memories; And One or more processors in communication with the one or more memories, the one or more processors being configured to: Determine a first condition for triggering the execution of one or more layer 1 (L1) Signal measurements for inter-cell mobility; Based on determining that the first condition is triggered, perform the one or more L1 signal measurements for one or more cells in a configured set of cells for the UE; And Transmit a report of the one or more L1 signal measurements to a network node.

2. The UE according to claim 1, wherein the one or more processors are further configured to: Receive from the network node one or more conditions for triggering the one or more L1 signal measurements, wherein the one or more conditions include the first condition.

3. The UE according to claim 2, wherein the one or more conditions include one or more of a UE mobility condition, a channel strength measurement condition associated with the configured set of cells, or a predicted blockage condition.

4. The UE according to claim 3, wherein the first condition is the channel strength measurement condition, wherein the channel strength measurement condition is a channel strength threshold for one or more cells in the configured set of cells, and wherein the one or more processors are further configured to: Determine the channel strength of at least one cell among the one or more cells in the configured set of cells; Compare the channel strength with the channel strength threshold to generate a comparison result; And Based on the comparison result, determine the channel strength measurement condition for triggering the execution of the one or more L1 signal measurements for inter-cell mobility.

5. The UE according to claim 1, wherein the one or more processors are further configured to: Receive a measurement configuration from the network node, the measurement configuration including one or more measurement parameters for performing the one or more L1 signal measurements, wherein the one or more measurement parameters indicate one or more specific cells among the one or more cells in the configured set of cells for which the one or more L1 signal measurements are to be performed; and Based on the one or more measurement parameters, perform the one or more L1 signal measurements for the one or more cells in the configured set of cells.

6. The UE according to claim 1, wherein the one or more processors are further configured to: Receive a report configuration from the network node, the report configuration including report parameters for reporting the one or more L1 signal measurements, wherein the report parameters indicate one or more of the duration of the report, the number of reports, or the periodicity of multiple reports; and Based on the report parameters, transmit the report of the one or more L1 signal measurements to the network node using a downlink control information (DCI) signal or using a medium access control (MAC) control element (CE) signal.

7. The UE according to claim 1, wherein the one or more processors are further configured to: Receive a dynamic resource grant from the network node to be used for reporting the one or more L1 signal measurements; and Transmit the report of the one or more L1 signal measurements to the network node based on the dynamic resource grant.

8. The UE according to claim 1, wherein the one or more processors are further configured to:[[]] Receive a filtering configuration from the network node, the filtering configuration including filtering parameters for filtering the one or more L1 signal measurements; and Filter the one or more L1 signal measurements based on the filtering parameters before transmitting the report.

9. The UE according to claim 1, wherein in order to perform the one or more L1 signal measurements of the one or more cells in the configured cell set, the one or more processors are configured to:[[]] Perform the one or more L1 signal measurements of one or more cells in the active cell set in the configured cell set; Perform the one or more L1 signal measurements of one or more cells in the deactivated cell set in the configured cell set; or Perform the one or more L1 signal measurements of one or more cells in the active cell set in the configured cell set, and perform the one or more L1 signal measurements of one or more cells in the deactivated cell set in the configured cell set.

10. A method for wireless communication, the method comprising:[[]] Determine, at a user equipment (UE), a first condition for triggering inter-cell mobility for performing one or more layer 1 (L1) signal measurements; Perform the one or more L1 signal measurements of one or more cells in a configured cell set for the UE based on determining that the first condition is triggered; And Transmit a report of the one or more L1 signal measurements to a network node.

11. The method according to claim 10, the method further comprising:[[]] Receive, from the network node, one or more conditions for triggering the one or more L1 signal measurements, wherein the one or more conditions include the first condition.

12. The method according to claim 11, wherein the one or more conditions include one or more of a UE mobility condition, a channel strength measurement condition associated with the configured cell set, or a predicted blocking condition.

13. The method according to claim 12, wherein the first condition is the channel strength measurement condition, wherein the channel strength measurement condition is a channel strength threshold of one or more cells in the configured cell set, and wherein the method further comprises:[[]] Determine the channel strength of at least one cell in the one or more cells in the configured cell set; Compare the channel strength with the channel strength threshold to generate a comparison result; And Determine the channel strength measurement condition for triggering inter-cell mobility for performing the one or more L1 signal measurements based on the comparison result.

14. The method according to claim 10, the method further comprising:[[]] Receive a measurement configuration from the network node, the measurement configuration including one or more measurement parameters for performing the one or more L1 signal measurements, wherein the one or more measurement parameters indicate one or more specific cells in the configured set of cells for which the one or more L1 signal measurements are to be performed; and Perform the one or more L1 signal measurements on the one or more cells in the configured set of cells based on the one or more measurement parameters.

15. The method according to claim 10, the method further comprising: Receive a reporting configuration from the network node, the reporting configuration including reporting parameters for reporting the one or more L1 signal measurements, wherein the reporting parameters indicate one or more of the duration of the reporting, the number of reports, or the periodicity of multiple reports; and Transmit the report of the one or more L1 signal measurements to the network node based on the reporting parameters using a downlink control information (DCI) signal or using a medium access control (MAC) control element (CE) signal.

16. The method according to claim 10, the method further comprising: Receive a dynamic resource grant from the network node to be used for reporting the one or more L1 signal measurements; and Transmit the report of the one or more L1 signal measurements to the network node based on the dynamic resource grant.

17. The method according to claim 10, the method further comprising: Receive a filtering configuration from the network node, the filtering configuration including filtering parameters for filtering the one or more L1 signal measurements; and Filter the one or more L1 signal measurements based on the filtering parameters before transmitting the report.

18. The method according to claim 10, wherein performing the one or more L1 signal measurements on the one or more cells in the configured set of cells includes: Performing the one or more L1 signal measurements on one or more cells in the set of active cells in the configured set of cells; Performing the one or more L1 signal measurements on one or more cells in the set of deactivated cells in the configured set of cells; or Performing the one or more L1 signal measurements on one or more cells in the set of active cells in the configured set of cells and performing the one or more L1 signal measurements on one or more cells in the set of deactivated cells in the configured set of cells.

19. A network node for wireless communication, the network node comprising: One or more memories; and One or more processors in communication with the one or more memories, the one or more processors being configured to: Transmit to a user equipment (UE) one or more conditions for triggering one or more layer 1 (L1) signal measurements on one or more cells in a configured set of cells for the UE for inter-cell mobility; Receive a report of the one or more L1 signal measurements from the UE; and Perform inter-cell mobility operations based on the one or more L1 signal measurements.

20. The network node according to claim 19, wherein the one or more conditions include one or more of a UE mobility condition, a channel strength measurement condition associated with the configured set of cells, or a predicted blockage condition.

21. The network node according to claim 19, wherein the one or more processors are further configured to: Transmit a measurement configuration to the UE, the measurement configuration including one or more measurement parameters for performing the one or more L1 signal measurements, wherein the one or more measurement parameters indicate one or more specific cells in the one or more cells of the configured set of cells for which the one or more L1 signal measurements are to be performed.

22. The network node according to claim 19, wherein the one or more processors are further configured to: Transmit a reporting configuration to the UE, the reporting configuration including reporting parameters for reporting the one or more L1 signal measurements, wherein the reporting parameters indicate one or more of the duration of the reporting, the number of reports, or the periodicity of multiple reports.

23. The network node according to claim 19, wherein the one or more processors are further configured to: Transmit a dynamic resource grant to the UE to be used for reporting the one or more L1 signal measurements.

24. The network node according to claim 19, wherein the one or more processors are further configured to: Filter the one or more L1 signal measurements.

25. A method for wireless communication, the method comprising: Transmit to a user equipment (UE) one or more conditions for triggering one or more layer 1 (L1) signal measurements for one or more cells in a configured set of cells for the UE for inter-cell mobility; Receive a report of the one or more L1 signal measurements from the UE; And Perform inter-cell mobility operations based on the one or more L1 signal measurements.

26. The method according to claim 25, wherein the one or more conditions include one or more of a UE mobility condition, a channel strength measurement condition associated with the configured set of cells, or a predicted blockage condition.

27. The method according to claim 25, the method further comprising: Transmit a measurement configuration to the UE, the measurement configuration including one or more measurement parameters for performing the one or more L1 signal measurements, wherein the one or more measurement parameters indicate one or more specific cells in the one or more cells of the configured set of cells for which the one or more L1 signal measurements are to be performed.

28. The method according to claim 25, the method further comprising: Transmit a reporting configuration to the UE, the reporting configuration including reporting parameters for reporting the one or more L1 signal measurements, wherein the reporting parameters indicate one or more of the duration of the reporting, the number of reports, or the periodicity of multiple reports.

29. The method according to claim 25, the method further comprising: Transmit to the UE a dynamic resource grant to be used for reporting the one or more L1 signal measurements.

30. The method according to claim 25, the method further comprising: Filtering the one or more L1 signal measurements.

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