Uplink-angle of arrival operation in green networks

Abstract

Aspects presented herein may improve the accuracy of uplink-based positioning when at least one network entity participating in the uplink-based positioning is operating in an energy saving mode. In one aspect, a network entity receives (1002) information indicating a set of antenna panel configurations for a plurality of network nodes, where the set of antenna panel configurations is associated with a set of energy saving modes. The network entity transmits (1004) an indication of one or more UL-SRS transmission parameters for the UE based on the information indicating the set of antenna panel configurations for the plurality of network nodes. In some examples, each antenna panel configuration in the set of antenna panel configurations may include a number of antennas to be used in UL azimuth measurements and a number of antennas to be used in UL elevation measurements in one power saving mode.

Description

[0001] Cross - Reference to Related Applications

[0002] This application claims the benefit of U.S. Non - Provisional Patent Application Serial No. 18 / 049,553, entitled "UPLINK - ANGLE OF ARRIVAL OPERATIONS IN GREEN NETWORKS", filed on October 25, 2022, which is hereby incorporated by reference in its entirety. Technical Field

[0003] This disclosure relates generally to communication systems and, more particularly, to wireless communication regarding positioning. Background Art

[0004] Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcasting. A typical wireless communication system may employ a multiple access technology capable of supporting communication with multiple users by sharing available system resources. Examples of such multiple access technologies include Code Division Multiple Access (CDMA) systems, Time Division Multiple Access (TDMA) systems, Frequency Division Multiple Access (FDMA) systems, Orthogonal Frequency Division Multiple Access (OFDMA) systems, Single - Carrier Frequency Division Multiple Access (SC - FDMA) systems, and Time Division - Synchronous Code Division Multiple Access (TD - SCDMA) systems.

[0005] These multiple access technologies have been adopted in various telecommunication standards to provide a common protocol that enables different wireless devices to communicate at the urban, national, regional, and even global levels. An example telecommunication standard is 5G New Radio (NR). 5G NR is part of the continuous evolution of mobile broadband promulgated by the 3rd Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., related to the Internet of Things (IoT)), and other requirements. 5G NR includes services associated with Enhanced Mobile Broadband (eMBB), Massive Machine - Type Communication (mMTC), and Ultra - Reliable Low - Latency Communication (URLLC). Certain aspects of 5G NR may be based on the 4G Long - Term Evolution (LTE) standard. Further improvements to 5G NR technology are needed. In addition, these improvements may also be applicable to other multiple access technologies and telecommunication standards that employ these technologies. Summary of the Invention

[0006] A simplified summary of one or more aspects is presented below in order to provide a basic understanding of these aspects. This summary is not an extensive overview of all contemplated aspects. The summary neither identifies key or critical elements of all aspects nor describes the scope of any or all aspects. Its sole purpose is to present some concepts of one or more aspects in a simplified form as a prelude to the more detailed description that is presented later.

[0007] In one aspect of the present disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus receives information indicating a set of antenna panel configurations for a plurality of network nodes, where the set of antenna panel configurations is associated with a set of energy saving modes. The apparatus sends an indication of one or more uplink (UL)-sounding reference signal (SRS) (UL-SRS) transmission parameters for a user equipment (UE) in a UE positioning session based on the information indicating the set of antenna panel configurations for the plurality of network nodes.

[0008] In one aspect of the present disclosure, a method, a computer-readable medium, and an apparatus are provided. The apparatus sends information indicating a set of antenna panel configurations for the network node or for a plurality of network nodes including the network node, where the set of antenna panel configurations is associated with a set of energy saving modes. The apparatus receives an indication of one or more UL-SRS transmission parameters for a UE in a UE positioning session based on the information indicating the set of antenna panel configurations for the plurality of network nodes.

[0009] To achieve the foregoing and related purposes, one or more aspects include the features described in full below and particularly pointed out in the claims. The following description and the drawings set forth in detail some illustrative features of one or more aspects. However, these features are indicative of only some of the various ways in which the principles of the various aspects may be employed. BRIEF DESCRIPTION OF THE DRAWINGS

[0010] Figure 1 is a diagram illustrating an example of a wireless communication system and an access network.

[0011] Figure 2A is a diagram illustrating an example of a first frame according to various aspects of the present disclosure.

[0012] Figure 2B is a diagram illustrating an example of a downlink (DL) channel within a subframe according to various aspects of the present disclosure.

[0013] Figure 2C is a diagram illustrating an example of a second frame according to various aspects of the present disclosure.

[0014] Figure 2D is a diagram illustrating an example of an uplink (UL) channel within a subframe according to various aspects of the present disclosure.

[0015] Figure 3 is a diagram illustrating an example of a base station and a user equipment (UE) in an access network.

[0016] Figure 4 is a diagram illustrating an example of UE positioning based on reference signal measurements.

[0017] Figure 5 It is a communication flow diagram illustrating an example of a transmission and reception point (TRP) information exchange process initiated by a location management function (LMF) according to various aspects of the present disclosure.

[0018] Figure 6 It is a communication flow diagram illustrating an example of an uplink angle of arrival (UL-AoA) positioning process according to various aspects of the present disclosure.

[0019] Figure 7 It is a communication flow diagram illustrating an example of a base station transmitting an update of its antenna configuration (or the antenna configuration of its TRP) to the LMF via a TRP configuration information exchange process according to various aspects of the present disclosure.

[0020] Figure 8 It is a diagram illustrating an example of the LMF using a TRP measurement request information message to indicate to one or more base stations the minimum number of antennas to be used for azimuth angle estimation and / or elevation angle estimation according to various aspects of the present disclosure.

[0021] Figure 9 It is a flowchart of a method for wireless communication.

[0022] Figure 10 It is a flowchart of a method for wireless communication.

[0023] Figure 11 It is a diagram illustrating an example of the hardware implementation of a network entity.

[0024] Figure 12 It is a flowchart of a method for wireless communication.

[0025] Figure 13 It is a flowchart of a method for wireless communication.

[0026] Figure 14 It is a diagram illustrating an example of the hardware implementation of a network entity. Detailed Description

[0027] Some wireless communication systems (e.g., green networks) may support techniques for reducing network power consumption. In some examples, these power savings may occur during periods of low traffic (e.g., low load scenarios with low data arrival rates and fewer connected UEs). In such examples, network entities may reduce overall power consumption by using lower transmit power and / or fewer antennas. However, using reduced transmit power and / or fewer antennas (e.g., entering a network power saving mode) may affect the accuracy of positioning procedures at other communication devices. For example, since UE positioning based on measured UL-AoA relies on the number of antennas for accurate angle measurements, changing the number of receive antennas may affect UL-AoA measurement accuracy. Thus, if a network entity changes its operating mode (e.g., changes to a different power saving operation) or uses different transmit parameters (e.g., settings, configurations) for different energy saving (ES) modes, the accuracy of uplink-based positioning procedures may be adversely affected. For example, if a network entity operates with fewer antennas and / or reduced transmit power, the UE may not be able to receive PRS from or send SRS to the network entity. Thus, some uplink-based positioning procedures may not be suitable for wireless communication systems where network entities frequently transition between different operating modes (e.g., different ES modes or energy saving operations).

[0028] When a network entity participating in uplink-based positioning operates in an energy saving mode (e.g., operates with a reduced number of antennas, with reduced transmit / receive power, and / or with reduced processing capabilities, etc.), aspects presented herein can improve the accuracy of uplink-based positioning such as UL-AoA positioning. In other words, the aspects presented herein can provide solutions to account for different network power saving operations during a UE positioning session. The aspects presented herein can also be applied to both fast (dynamic) and slow network energy saving modes. For example, some network entities may be configured to continuously and dynamically switch their energy saving mode based on traffic load (e.g., switch to the energy saving mode whenever the traffic load is below a threshold), while other network entities may be configured to switch their energy saving mode based on a predefined schedule (e.g., switch to the energy saving mode during nighttime).

[0029] The detailed description set forth below in connection with the accompanying drawings is a description of various configurations and does not 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, the concepts may be practiced without these specific details. In some instances, well-known structures and components are shown in block diagram form to avoid obscuring the concepts.

[0030] Certain aspects of a telecommunications system are presented with reference to various apparatus and methods. These apparatus and methods are described in the following detailed description and illustrated in the accompanying drawings by various blocks, components, circuits, processes, algorithms, etc. (collectively referred to as "elements"). The elements can be implemented using electronic hardware, computer software, or any combination thereof. Whether an element is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system.

[0031] By way of example, an element, or any portion of an element, or any combination of elements can be implemented as a "processing system" that includes one or more processors. Examples of processors include a microprocessor, a microcontroller, a graphics processing unit (GPU), a central processing unit (CPU), an application processor, a digital signal processor (DSP), a reduced instruction set computing (RISC) processor, a system on a chip (SoC), a baseband processor, a field programmable gate array (FPGA), a programmable logic device (PLD), a state machine, gated logic, discrete hardware circuits, and other suitable hardware configured to perform the various functions described throughout this disclosure. One or more processors in the processing system can execute software. Software should be construed broadly to mean instructions, instruction sets, code, code segments, program code, programs, subprograms, software components, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, or any combination thereof, regardless of whether it is referred to as software, firmware, middleware, microcode, hardware description language, or other terms.

[0032] Thus, in one or more example aspects, embodiments, and / or use cases, the described functionality can be implemented in hardware, software, or any combination thereof. If implemented in software, the functionality can be stored or encoded on a computer-readable medium as one or more instructions or code. Computer-readable media includes computer storage media. Storage media can be any available media that can be accessed by a computer. By way of example, such computer-readable media can include random access memory (RAM), read-only memory (ROM), electrically erasable programmable ROM (EEPROM), optical disk storage, magnetic disk storage, other magnetic storage devices, combinations of these types of computer-readable media, or any other media capable of storing computer-executable code in the form of instructions or data structures that can be accessed by a computer.

[0033] Although aspects, embodiments, and / or use cases are described by way of illustration of some examples in this application, additional or different aspects, embodiments, and use cases may arise in many different arrangements and scenarios. The aspects, embodiments, and / or use cases described herein may be implemented across many different platform types, devices, systems, shapes, sizes, and packaging arrangements. For example, aspects, embodiments, and / or use cases may be implemented via integrated chips and other non-module-component-based devices (e.g., end-user devices, vehicles, communication devices, computing devices, industrial equipment, retail / purchase devices, medical devices, artificial intelligence (AI)-enabled devices, etc.). Although some examples may or may not be specifically targeted at use cases or applications, the examples described may have broad applicability. Aspects, embodiments, and / or use cases may range from chip-level or modular components to non-modular, non-chip-level embodiments, and further to aggregated, distributed, or original equipment manufacturer (OEM) devices or systems incorporating one or more of the technologies herein. In some practical settings, devices incorporating the aspects and features described may also include additional components and features for implementing and practicing the claimed and described aspects. For example, the transmission and reception of wireless signals necessarily includes multiple components for analog and digital purposes (e.g., hardware components including antennas, RF chains, power amplifiers, modulators, buffers, processors, interleavers, adders / summers, etc.). The technologies described herein may be practiced in a wide variety of devices, chip-level components, systems, distributed arrangements, aggregated components, or disaggregated components, end-user devices, etc., of various sizes, shapes, and configurations.

[0034] The deployment of a communication system (such as a 5G NR system) can be arranged with various components or constituent parts in a variety of ways. In a 5G NR system or network, network nodes, network entities, mobility elements of the network, radio access 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 functions may be implemented in an aggregated or disaggregated architecture. For example, a BS (such as a Node B (NB), evolved NB (eNB), NR BS, 5G NB, access point (AP), transmit-receive point (TRP), or cell, etc.) may be implemented as an aggregated base station (also referred to as a stand-alone BS or monolithic BS) or a disaggregated base station.

[0035] A converged 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 across 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 be implemented as a virtual unit, i.e., a virtual central unit (VCU), a virtual distributed unit (VDU), or a virtual radio unit (VRU).

[0036] Base station operation or network design may consider the converged characteristics of base station functionality. For example, a split base station 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 virtually distributing 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.

[0037] Figure 1 FIG. 100 is a diagram illustrating an example of a wireless communication system and an access network. The illustrated wireless communication system includes a split base station architecture. The split base station architecture may include one or more CUs 110, which may communicate directly with a core network 120 via a backhaul link, or indirectly with the core network 120 through one or more split base station units, such as a near real-time (near RT) RAN intelligent controller (RIC) 125 via an E2 link, or a non-real-time (non RT) RIC 115 associated with a service management and orchestration (SMO) framework 105, or both. The CU 110 may communicate with one or more DUs 130 via a respective midhaul link, such as an F1 interface. The DU 130 may communicate with one or more RUs 140 via a respective fronthaul link. The RU 140 may communicate with a respective UE 104 via one or more radio frequency (RF) access links. In some embodiments, the UE 104 may be served simultaneously by multiple RUs 140.

[0038] Each of these units (i.e., CU 110, DU 130, RU 140, and the near RT RIC 125, non-RT RIC 115, and SMO framework 105) 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 referred to as signals) via a wired or wireless transmission medium. Each of the units or an 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, these units may include a wired interface that is configured to receive signals or transmit signals to one or more of the other units via a wired transmission medium. Additionally, these units may include a wireless interface that may include a receiver, transmitter, or transceiver (such as an RF transceiver) that is configured to receive and / or transmit signals to one or more of the other units via a wireless transmission medium.

[0039] In some aspects, CU 110 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 be implemented using an interface that is configured to communicate signals with other control functions hosted by CU 110. CU 110 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, CU 110 may be logically split into one or more CU-UP units and one or more CU-CP units. When implemented in an O-RA configuration, the CU-UP units may communicate bidirectionally with the CU-CP units via an interface (such as an E1 interface). As needed, CU 110 may be implemented to communicate with DU 130 for network control and signaling.

[0040] DU 130 may correspond to a logical unit that includes one or more base station functions for controlling the operation of one or more RUs 140. In some aspects, DU 130 may host one or more of the Radio Link Control (RLC) layer, 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 3GPP). In some aspects, DU 130 may also host one or more low PHY layers. Each layer (or module) may be implemented using an interface that is configured to communicate signals with other layers (and modules) hosted by DU 130 or with control functions hosted by CU 110.

[0041] Lower layer functionality can be implemented by one or more RUs 140. In some deployments, the RUs 140 controlled by the DU 130 can 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 function splitting (such as lower layer function splitting). In such an architecture, the RU 140 can be implemented to handle over-the-air (OTA) communication with one or more UEs 104. In some embodiments, the real-time and non-real-time aspects of the control plane and user plane communication with the RU 140 can be controlled by the corresponding DU 130. In some scenarios, this configuration can enable the implementation of the DU 130 and CU 110 in a cloud-based RAN architecture (such as a vRAN architecture).

[0042] The SMO framework 105 can be configured to support the deployment and orchestration of RANs with non-virtualized network elements and virtualized network elements. For non-virtualized network elements, the SMO framework 105 can be configured to support the deployment of dedicated physical resources for RAN coverage requirements, which can be managed via an operation and maintenance interface (such as the O1 interface). For virtualized network elements, the SMO framework 105 can be configured to interact with a cloud computing platform (such as the Open Cloud (O-Cloud) 190) to perform network element lifecycle management (such as instantiating virtualized network elements) via a cloud computing platform interface (such as the O2 interface). Such virtualized network elements can include, but are not limited to, the CU 110, DU 130, RU 140, and the near RT RIC 125. In some embodiments, the SMO framework 105 can communicate with the hardware aspects of the 4G RAN (such as the Open eNB (O-eNB) 111) via the O1 interface. Additionally, in some embodiments, the SMO framework 105 can communicate directly with one or more RUs 140 via the O1 interface. The SMO framework 105 can also include a non-RT RIC 115 configured to support the functionality of the SMO framework 105.

[0043] The non-RT RIC 115 can be configured to include a logic function that enables non-real-time control and optimization of RAN elements and resources, an artificial intelligence (AI) / machine learning (ML) (AI / ML) workflow including model training and update, or policy-based guidance of applications / features in the near-RT RIC 125. The non-RT RIC 115 can be coupled to or communicate with the near-RT RIC 125 (such as via the A1 interface). The near-RT RIC 125 can be configured to include a logic function that enables near-real-time control and optimization of RAN elements and resources via data collection and actions through an interface (such as via the E2 interface) that connects one or more CUs 110, one or more DUs 130, or both, and the O-eNB to the near-RT RIC 125.

[0044] In some specific implementations, to generate an AI / ML model to be deployed in the near-RT RIC 125, the non-RT RIC 115 can receive parameters or external enrichment information from an external server. Such information can be utilized by the near-RT RIC 125 and can be received from non-network data sources or from network functions at the SMO framework 105 or at the non-RT RIC 115. In some examples, the non-RT RIC 115 or the near-RT RIC 125 can be configured to tune RAN behavior or performance. For example, the non-RT RIC 115 can monitor long-term trends and patterns of performance and employ an AI / ML model to perform corrective actions through the SMO framework 105 (such as via reconfiguration of O1) or via creation of RAN management policies (such as A1 policies).

[0045] At least one of CU 110, DU 130, and RU 140 may be referred to as base station 102. Thus, base station 102 may include one or more of CU 110, DU 130, and RU 140 (each component is indicated by a dashed line to indicate that each component may or may not be included in base station 102). Base station 102 provides an access point to core network 120 for UE 104. Base station 102 may include macro cells (high-power cellular base stations) and / or small cells (low-power cellular base stations). Small cells include femto cells, pico cells, and micro cells. A network including both small cells and macro cells may be referred to as a heterogeneous network. The heterogeneous network may also include a home evolved Node B (eNB) (HeNB), which may provide services to a restricted group referred to as a closed subscriber group (CSG). The communication link between RU 140 and UE 104 may include an uplink (UL) (also referred to as a reverse link) transmission from UE 104 to RU 140 and / or a downlink (DL) (also referred to as a forward link) transmission from RU 140 to UE 104. The communication link may use multiple-input multiple-output (MIMO) antenna technology, including spatial multiplexing, beamforming, and / or transmit diversity. The communication link may pass through one or more carriers. For each carrier allocated in carrier aggregation with a total of up to Yx MHz (x component carriers) for transmission in each direction, base station 102 / UE 104 may use a spectrum with a bandwidth of up to Y MHz (e.g., 5 MHz, 10 MHz, 15 MHz, 20 MHz, 100 MHz, 400 MHz, etc.). These carriers may or may not be adjacent to each other. The allocation of carriers may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated for DL than for UL). Component carriers may include a primary component carrier and one or more secondary component carriers. The primary component carrier may be referred to as the primary cell (PCell) and the secondary component carriers may be referred to as secondary cells (SCells).

[0046] Some UEs 104 may use device-to-device (D2D) communication link 158 to communicate with each other. D2D communication link 158 may use DL / UL wireless wide area network (WWAN) spectrum. D2D communication link 158 may use one or more sidelink channels, such as physical sidelink broadcast channel (PSBCH), physical sidelink discovery channel (PSDCH), physical sidelink shared channel (PSSCH), and physical sidelink control channel (PSCCH). D2D communication may be through various wireless D2D communication systems, such as, for example, Bluetooth, Wi-Fi based on the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard, LTE, or NR.

[0047] The wireless communication system may also include a Wi-Fi AP 150 that communicates with the UE 104 (also referred to as a Wi-Fi station (STA)) via a communication link 154, for example, in an unlicensed spectrum such as the 5 GHz unlicensed spectrum. When communicating in the unlicensed spectrum, the UE 104 / AP 150 may perform a Clear Channel Assessment (CCA) before communication to determine whether the channel is available.

[0048] The electromagnetic spectrum is generally subdivided into various categories, bands, channels, etc. based on frequency / wavelength. In 5G NR, two initial operating bands have been identified as Frequency Range Designation FR1 (410 MHz - 7.125 GHz) and FR2 (24.25 GHz - 52.6 GHz). Although a part of FR1 is greater than 6 GHz, in various documents and articles, FR1 is generally referred to (interchangeably) as the "sub-6 GHz" band. Regarding FR2, a similar naming issue sometimes occurs, which is generally (interchangeably) referred to as the "millimeter wave" band in documents and articles, although it is different from the Extremely High Frequency (EHF) band (30 GHz - 300 GHz) identified by the International Telecommunication Union (ITU) as the "millimeter wave" band.

[0049] The frequencies between FR1 and FR2 are generally referred to as mid-band frequencies. Recent 5G NR research has identified the operating bands for these mid-band frequencies as Frequency Range Designation FR3 (7.125 GHz - 24.25 GHz). The bands falling within FR3 may inherit FR1 characteristics and / or FR2 characteristics, and thus can effectively extend the features of FR1 and / or FR2 to the mid-band frequencies. In addition, higher bands are currently being explored to extend 5G NR operation beyond 52.6 GHz. For example, three higher operating bands have been identified as Frequency Range Designation FR2-2 (52.6 GHz - 71 GHz), FR4 (71 GHz - 114.25 GHz), and FR5 (114.25 GHz - 300 GHz). Each of these higher bands falls within the EHF band.

[0050] Considering the above aspects, unless otherwise specifically stated, if the term "sub-6 GHz" etc. is used in this article, it may broadly represent frequencies that can be less than 6 GHz, can be within FR1, or can include mid-band frequencies. In addition, unless otherwise specifically stated, if the term "millimeter wave" etc. is used in this article, it may broadly represent frequencies that can include mid-band frequencies, can be within FR2, FR4, FR2-2, and / or FR5, or can be within the EHF band.

[0051] The base station 102 and the UE 104 may each include multiple antennas (such as antenna elements, antenna panels, and / or antenna arrays) to facilitate beamforming. The base station 102 may transmit a beamformed signal 182 to the UE 104 in one or more transmission directions. The UE 104 may receive the beamformed signal from the base station 102 in one or more reception directions. The UE 104 may also transmit a beamformed signal 184 to the base station 102 in one or more transmission directions. The base station 102 may receive the beamformed signal from the UE 104 in one or more reception directions. The base station 102 / UE 104 may perform beam training to determine the optimal reception direction and transmission direction for each of the base station 102 / UE 104. The transmission direction and the reception direction of the base station 102 may be the same or may not be the same. The transmission direction and the reception direction of the UE 104 may be the same or may not be the same.

[0052] The base station 102 may include and / or be referred to as a gNB, Node B, eNB, access point, base station transceiver, radio base station, radio transceiver, transceiver function, basic service set (BSS), extended service set (ESS), transmission reception point (TRP), network node, network entity, network equipment, or some other suitable term. The base station 102 may be implemented as an integrated access and backhaul (IAB) node, a relay node, a sidelink node, an aggregated (monolithic) base station with a baseband unit (BBU) (including a CU and a DU) and an RU, or may be implemented as a disaggregated base station including one or more of a CU, a DU, and / or an RU. A set of base stations including disaggregated base stations and / or aggregated base stations may be referred to as a next generation (NG) RAN (NG-RAN).

[0053] The core network 120 may include an Access and Mobility Management Function (AMF) 161, a Session Management Function (SMF) 162, a User Plane Function (UPF) 163, a Unified Data Management (UDM) 164, one or more Location Servers 168, and other functional entities. The AMF 161 is a control node that processes signaling between the UE 104 and the core network 120. The AMF 161 supports registration management, connection management, mobility management, and other functions. The SMF 162 supports session management and other functions. The UPF 163 supports packet routing, packet forwarding, and other functions. The UDM 164 supports the generation of Authentication and Key Agreement (AKA) credentials, user identity handling, access authorization, and subscription management. One or more Location Servers 168 are illustrated as including a Gateway Mobile Location Center (GMLC) 165 and a Location Management Function (LMF) 166. However, in general, one or more Location Servers 168 may include one or more location / locationing servers, which may include one or more of the GMLC 165, LMF 166, a Position Determination Entity (PDE), a Serving Mobile Location Center (SMLC), a Mobile Positioning Center (MPC), etc. The GMLC 165 and LMF 166 support UE location services. The GMLC 165 provides an interface for clients / applications (e.g., emergency services) to access UE location information. The LMF 166 receives measurements and assistance information from the NG-RAN and the UE 104 via the AMF 161 to calculate the location of the UE 104. The NG-RAN may utilize one or more locationing methods to determine the location of the UE 104. Locating the UE 104 may involve signal measurements, position estimation, and optional speed calculations based on these measurements. The signal measurements may be performed by the UE 104 and / or the serving base station 102. The measured signals may be based on a Satellite Positioning System (SPS) 170 (e.g., a Global Navigation Satellite System (GNSS), Global Positioning System (GPS), Non-Terrestrial Network (NTN), or one or more of other satellite positioning / location systems), LTE signals, Wireless Local Area Network (WLAN) signals, Bluetooth signals, a Terrestrial Beacon System (TBS), sensor-based information (e.g., an atmospheric pressure sensor, a motion sensor), an NR Enhanced Cell ID (NR E-CID) method, NR signals (e.g., multi-round-trip time (multi-RTT), DL Angle of Departure (DL-AoD), DL Time Difference of Arrival (DL-TDOA), UL Time Difference of Arrival (UL-TDOA), and UL Angle of Arrival (UL-AoA) locationing), and / or one or more of other systems / signals / sensors.

[0054] Examples of the UE 104 include cellular phones, smart phones, Session Initiation Protocol (SIP) phones, laptop computers, personal digital assistants (PDAs), satellite radios, global positioning systems, multimedia devices, video devices, digital audio players (e.g., MP3 players), cameras, game consoles, tablet computers, smart devices, wearable devices, vehicles, electricity meters, air pumps, large or small kitchen appliances, healthcare devices, implants, sensors / actuators, displays, or any other device with similar functionality. Some of the UEs in the UE 104 may be referred to as IoT devices (e.g., parking meters, air pumps, toasters, vehicles, heart monitors, etc.). The UE 104 may also be referred to as a station, mobile station, subscriber station, mobile unit, subscriber unit, wireless unit, remote unit, mobile device, wireless device, wireless communication device, remote device, mobile subscriber station, access terminal, mobile terminal, wireless terminal, remote terminal, cell phone, user agent, mobile client, client, or some other suitable term. In some scenarios, the term "UE" may also apply to one or more companion devices, such as in a device constellation arrangement. One or more of these devices may access the network jointly and / or access the network individually.

[0055] Referring again to Figure 1 , in some aspects, the LMF 166 may be configured to receive information indicating a set of antenna panel configurations for a plurality of network nodes, where the set of antenna panel configurations is associated with a set of energy saving modes; and (e.g., via the UE positioning configuration component 197) send an indication of one or more UL-SRS transmission parameters for the UE in a UE positioning session based on the information indicating the set of antenna panel configurations for the plurality of network nodes.

[0056] In some aspects, the base station 102 may be configured to send information indicating a set of antenna panel configurations for the network node or for a plurality of network nodes including the network node, where the set of antenna panel configurations is associated with a set of energy saving modes; and (e.g., via the antenna configuration indication component 199) receive an indication of one or more UL-SRS transmission parameters for the UE in a UE positioning session based on the information indicating the set of antenna panel configurations for the plurality of network nodes.

[0057] Figure 2A FIG. 200 is a diagram illustrating an example of a first subframe within the 5G NR frame structure. Figure 2B FIG. 230 is a diagram illustrating an example of a DL channel within a 5G NR subframe. Figure 2C FIG. 250 is a diagram illustrating an example of a second subframe within the 5G NR frame structure. Figure 2DFIG. 280 is an illustration showing an example of UL channels within a 5G NR subframe. The 5G NR frame structure can be frequency division duplexing (FDD) (where, for a particular set of subcarriers (carrier system bandwidth), the subframes within that set of subcarriers are dedicated to DL or UL), or can be time division duplexing (TDD) (where, for a particular set of subcarriers (carrier system bandwidth), the subframes within that set of subcarriers are dedicated to both DL and UL). In Figure 2A , Figure 2C the example provided, the 5G NR frame structure is assumed to be TDD, where subframe 4 is configured with slot format 28 (where most are DL), where D is DL, U is UL, and F is flexibly usable between DL / UL, and subframe 3 is configured with slot format 1 (where all are UL). Although subframes 3, 4 are shown as having slot formats 1, 28 respectively, any particular subframe can be configured with any of the various available slot formats 0 to 61. Slot formats 0, 1 are all-DL, all-UL respectively. The other slot formats 2 to 61 include a mixture of DL, UL, and flexible symbols. The UE is configured with the slot format by the received slot format indicator (SFI) (configured dynamically by DL control information (DCI) or semi-statically / statically by radio resource control (RRC) signaling). Note that the following description also applies to the 5GNR frame structure as TDD.

[0058] Figures 2A to 2D The frame structure is illustrated, and aspects of the present disclosure can be applied to other wireless communication technologies that may have different frame structures and / or different channels. One frame (10 ms) can be divided into 10 equal-sized subframes (1 ms). Each subframe can include one or more slots. A subframe can also include mini-slots, which can include 7, 4, or 2 symbols. Each slot can include 14 or 12 symbols, depending on whether the cyclic prefix (CP) is normal or extended. For normal CP, each slot can include 14 symbols, and for extended CP, each slot can include 12 symbols. The symbols on the DL can be cyclic prefix orthogonal frequency division multiplexing (CP-OFDM) symbols. The symbols on the UL can be CP-OFDM symbols (for high throughput scenarios) or discrete Fourier transform (DFT) spread OFDM (DFT-s-OFDM) symbols (also known as single carrier frequency division multiple access (SC-FDMA) symbols) (for power-constrained scenarios; limited to single-stream transmission). The number of slots within a subframe is based on the CP and the parameter set. The parameter set defines the subcarrier spacing (SCS) (see

[0059] Table 1). The symbol length / duration can be scaled using 1 / SCS.

[0060]

[0061] Table 1: Parameter sets, SCS, and CP

[0062] For normal CP (14 symbols / slot), different parameter sets μ0 to 4 allow 1, 2, 4, 8, and 16 slots per subframe, respectively. For extended CP, parameter set 2 allows 4 slots per subframe. Thus, for normal CP and parameter set μ, there are 14 symbols / slot and 2 μ slots / subframe. The subcarrier spacing can be equal to 2 μ *15 kHz, where μ is parameter set 0 to 4. Thus, the subcarrier spacing for parameter set μ = 0 is 15 kHz, and the subcarrier spacing for parameter set μ = 4 is 240 kHz. The symbol length / duration is inversely related to the subcarrier spacing. Figures 2A to 2D An example of normal CP with 14 symbols per slot and parameter set μ = 2 with 4 slots per subframe is provided. The slot duration is 0.25 ms, the subcarrier spacing is 60 kHz, and the symbol duration is approximately 16.67 μs. Within the frame set, there may be one or more different bandwidth parts (BWPs) with frequency division multiplexing (see Figure 2B ). Each BWP can have a specific parameter set and CP (normal or extended).

[0063] A resource grid can be used to represent the frame structure. Each slot includes a resource block (RB) (also referred to as a physical RB (PRB)) that extends over 12 consecutive subcarriers. The resource grid is divided into multiple resource elements (REs). The number of bits carried by each RE depends on the modulation scheme.

[0064] As Figure 2A illustrated, some of the REs in the RE carry reference (pilot) signals (RS) for the UE. The RS can include demodulation RS (DM-RS) (denoted as R for a specific configuration, but other DM-RS configurations are possible) and channel state information reference signals (CSI-RS) for channel estimation at the UE. The RS can also include beam measurement RS (BRS), beam refinement RS (BRRS), and phase tracking RS (PT-RS).

[0065] Figure 2BIllustrates examples of various DL channels within a subframe of a frame. The Physical Downlink Control Channel (PDCCH) carries DCI within one or more Control Channel Elements (CCEs) (e.g., 1, 2, 4, 8, or 16 CCEs), each CCE including six Resource Element Groups (REGs), and each REG including 12 consecutive Resource Elements (REs) within an OFDM symbol of a Resource Block (RB). The PDCCH within a Bandwidth Part (BWP) may be referred to as a Control Resource Set (CORESET). The UE is configured to monitor PDCCH candidates in a PDCCH search space (e.g., common search space, UE-specific search space) during a PDCCH monitoring occasion on the CORESET, where the PDCCH candidates have different DCI formats and different aggregation levels. Additional BWPs may be located at higher and / or lower frequencies on the channel bandwidth. The Primary Synchronization Signal (PSS) may be within symbol 2 of a specific subframe of the frame. The PSS is used by the UE 104 to determine subframe / symbol timing and the physical layer identity. The Secondary Synchronization Signal (SSS) may be within symbol 4 of a specific subframe of the frame. The SSS is used by the UE to determine the physical layer cell identity group number and radio frame timing. Based on the physical layer identity and the physical layer cell identity group number, the UE may determine the Physical Cell Identifier (PCI). Based on the PCI, the UE may determine the location of the Demodulation Reference Signal (DM-RS). The Physical Broadcast Channel (PBCH) carrying the Master Information Block (MIB) may be logically grouped with the PSS and SSS to form a Synchronization Signal (SS) / PBCH block (also referred to as an SS block (SSB)). The MIB provides the number of RBs in the system bandwidth and the System Frame Number (SFN). The Physical Downlink Shared Channel (PDSCH) carries user data, broadcast system information not transmitted via the PBCH (such as System Information Blocks (SIBs)), and paging messages.

[0066] As Figure 2C Illustrated, some of the REs carry DM-RS (indicated as R for one particular configuration, but other DM-RS configurations are possible) for channel estimation at the base station. The UE may transmit DM-RS for the Physical Uplink Control Channel (PUCCH) and DM-RS for the Physical Uplink Shared Channel (PUSCH). The PUSCH DM-RS may be transmitted in the previous one or two symbols of the PUSCH. Depending on whether a short PUCCH or a long PUCCH is transmitted and depending on the specific PUCCH format used, the PUCCH DM-RS may be transmitted in different configurations. The UE may transmit a Sounding Reference Signal (SRS), which may also be referred to as UL-SRS (Uplink-Sounding Reference Signal). The SRS may be transmitted in the last symbol of the subframe. The SRS may have a comb structure, and the UE may transmit the SRS on one of the teeth of the comb. The SRS may be used by the base station for channel quality estimation to enable frequency-dependent scheduling of the UL.

[0067] Figure 2D Illustrates examples of various UL channels within a subframe of a frame. The PUCCH can be located at the position indicated in one configuration. The PUCCH carries uplink control information (UCI), such as a scheduling request, a channel quality indicator (CQI), a precoding matrix indicator (PMI), a rank indicator (RI), and a hybrid automatic repeat request (HARQ) acknowledgement (ACK) (HARQ-ACK) feedback (i.e., one or more HARQ ACK bits indicating one or more ACKs and / or negative ACKs (NACKs)). The PUSCH carries data and can additionally be used to carry a buffer status report (BSR), a power headroom report (PHR), and / or UCI.

[0068] Figure 3 Is a block diagram of communication between a base station 310 and a UE 350 in an access network. In the DL, Internet Protocol (IP) packets can be provided to a controller / processor 375. The controller / processor 375 implements layer 3 and layer 2 functionality. Layer 3 includes a radio resource control (RRC) layer, and layer 2 includes a service data adaptation protocol (SDAP) layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, and a media access control (MAC) layer. The controller / processor 375 provides RRC layer functionality associated with the broadcast of system information (e.g., MIB, SIB), RRC connection control (e.g., RRC connection paging, RRC connection establishment, RRC connection modification, and RRC connection release), radio access technology (RAT) - to - RAT mobility, and measurement configuration for UE measurement reporting; PDCP layer functionality associated with header compression / decompression, security (encryption, decryption, integrity protection, integrity verification), and handover support functions; RLC layer functionality associated with the transfer of upper - layer packet data units (PDUs), error correction via ARQ, concatenation, segmentation, and reassembly of RLC service data units (SDUs), re - segmentation of RLC data PDUs, and re - ordering of RLC data PDUs; and MAC layer functionality associated with the mapping between logical channels and transport channels, multiplexing of MAC SDUs onto transport blocks (TBs), demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction via HARQ, priority handling, and logical channel prioritization.

[0069] The transmit (TX) processor 316 and the receive (RX) processor 370 implement layer 1 functionality associated with various signal processing functions. Layer 1, which includes the physical (PHY) layer, may include error detection on the transport channel, forward error correction (FEC) encoding / decoding of the transport channel, interleaving, rate matching, mapping to the physical channel, modulation / demodulation of the physical channel, and MIMO antenna processing. The TX processor 316 handles the mapping to the signal constellation based on various modulation schemes such as binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase phase shift keying (M-PSK), and M-order quadrature amplitude modulation (M-QAM). The encoded and modulated symbols can then be split into parallel streams. Subsequently, each stream can be mapped to OFDM subcarriers, multiplexed with reference signals (e.g., pilots) in the time domain and / or frequency domain, and then combined together using an inverse fast Fourier transform (IFFT) to generate a physical channel carrying a stream of time-domain OFDM symbols. The OFDM stream is precoded in space to generate multiple spatial streams. Channel estimates from the channel estimator 374 can be used to determine the encoding and modulation schemes, as well as for spatial processing. The channel estimates can be derived from reference signals transmitted by the UE 350 and / or channel state feedback. Then, each spatial stream can be provided to a different antenna 320 via a separate transmitter 318Tx. Each transmitter 318Tx can modulate a radio frequency (RF) carrier with the corresponding spatial stream for transmission.

[0070] At the UE 350, each receiver 354Rx receives signals via its corresponding antenna 352. Each receiver 354Rx recovers the information modulated onto the RF carrier and provides the information to the receive (RX) processor 356. The TX processor 368 and the RX processor 356 implement layer 1 functionality associated with various signal processing functions. The RX processor 356 can perform spatial processing on the information to recover any spatial streams destined for the UE 350. If multiple spatial streams are destined for the UE 350, they can be combined by the RX processor 356 into a single OFDM symbol stream. The RX processor 356 then uses a fast Fourier transform (FFT) to convert the OFDM symbol stream from the time domain to the frequency domain. The frequency-domain signal includes a separate OFDM symbol stream for each subcarrier of the OFDM signal. The symbols on each subcarrier and the reference signals are recovered and demodulated by determining the most likely signal constellation points transmitted by the base station 310. These soft decisions can be based on the channel estimates computed by the channel estimator 358. The soft decisions are then decoded and deinterleaved to recover the data and control signals originally transmitted by the base station 310 on the physical channel. The data and control signals are then provided to the controller / processor 359, which implements layer 3 and layer 2 functionality.

[0071] The controller / processor 359 may be associated with a memory 360 that stores program code and data. The memory 360 may be referred to as a computer-readable medium. In the UL, the controller / processor 359 provides demultiplexing between the transport channel and the logical channel, packet reassembly, decryption, header decompression, and control signal processing to recover IP packets. The controller / processor 359 is also responsible for error detection using the ACK and / or NACK protocols to support HARQ operations.

[0072] Similar to the functionality described in connection with DL transmission performed by the base station 310, the controller / processor 359 provides RRC layer functionality associated with system information (e.g., MIB, SIB) acquisition, RRC connection, and measurement reporting; PDCP layer functionality associated with header compression / decompression and security (encryption, decryption, integrity protection, integrity verification); RLC layer functionality associated with the transfer of upper layer PDUs, error correction via ARQ, concatenation, segmentation, and reassembly of RLC SDUs, re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with the mapping between the logical channel and the transport channel, multiplexing of MAC SDUs onto TBs, demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction via HARQ, priority handling, and logical channel prioritization.

[0073] Channel estimates derived by the channel estimator 358 based on reference signals or feedback transmitted by the base station 310 may be used by the TX processor 368 to select appropriate decoding and modulation schemes and facilitate spatial processing. The spatial streams generated by the TX processor 368 may be provided to different antennas 352 via a separate transmitter 354Tx. Each transmitter 354Tx modulates an RF carrier with the corresponding spatial stream for transmission.

[0074] UL transmission is processed at the base station 310 in a manner similar to that described in connection with the receiver functionality at the UE 350. Each receiver 318Rx receives signals via its corresponding antenna 320. Each receiver 318Rx recovers the information modulated onto the RF carrier and provides the information to the RX processor 370.

[0075] The controller / processor 375 may be associated with a memory 376 that stores program code and data. The memory 376 may be referred to as a computer-readable medium. In the UL, the controller / processor 375 provides demultiplexing between the transport channel and the logical channel, packet reassembly, decryption, header decompression, control signal processing to recover IP packets. The controller / processor 375 is also responsible for error detection using the ACK and / or NACK protocols to support HARQ operations.

[0076] At least one of TX processor 368, RX processor 356, and controller / processor 359 may be configured to perform aspects associated with Figure 1 the SRS transmission component 198 of

[0077] At least one of TX processor 316, RX processor 370, and controller / processor 375 may be configured to perform aspects associated with Figure 1 the antenna configuration indication component 199 of

[0078] Figure 4 FIG. 400 is an illustration of an example of UE positioning based on reference signal measurements (which may also be referred to as “network-based positioning”) in accordance with various aspects of the present disclosure. UE 404 may transmit UL-SRS 412 at time T SRS_TX and receive a downlink positioning reference signal (PRS) (DL-PRS) 410 at time T PRS_RX . TRP 406 may receive UL-SRS 412 at time T SRS_RX and transmit DL-PRS 410 at time T PRS_TX . UE 404 may receive DL-PRS 410 before transmitting UL-SRS 412, or may transmit UL-SRS 412 before receiving DL-PRS 410. In either case, a positioning server (e.g., location server 168) or UE 404 may determine the RTT 414 based on ||T SRS_RX – T PRS_TX | – |T SRS_TX – T PRS_RX ||. Thus, multi-RTT positioning may utilize UE Rx-Tx time difference measurements of downlink signals received from multiple TRPs 402, 406 and measured by UE 404 (i.e., |T SRS_TX – T PRS_RX |) and DL-PRS reference signal received power (RSRP) (DL-PRS-RSRP), as well as measured TRP Rx-Tx time difference measurements of uplink signals transmitted from UE 404 at multiple TRPs 402, 406 (i.e., |T SRS_RX – T PRS_TX|) and UL-SRS-RSRP. The UE 404 uses the auxiliary data received from the positioning server to measure the UE Rx-Tx time difference measurement (and / or the DL-PRS-RSRP of the received signal), and the TRP 402, 406 use the auxiliary data received from the positioning server to measure the gNB Rx-Tx time difference measurement (and / or the UL-SRS-RSRP of the received signal). These measurements can be used at the positioning server or the UE 404 to determine the RTT, which is used to estimate the location of the UE 404. Other methods for determining the RTT are possible, such as using DL-TDOA and / or UL-TDOA measurements.

[0079] PRS can be defined for network-based positioning (e.g., NR positioning) such that the UE can detect and measure more adjacent transmit and receive points (TRP), where multiple configurations are supported to enable various deployments (e.g., indoor, outdoor, sub-6, mmW, etc.). To support PRS beam operation, beam scanning can also be configured for PRS. The UL positioning reference signal can be based on the sounding reference signal (SRS) with enhancements / modifications for positioning purposes. In some examples, UL-PRS can be referred to as "SRS for positioning", and new information elements (IE) can be configured for SRS for positioning in RRC signaling.

[0080] The DL PRS-RSRP can be defined as the linear average of the power contributions (in [W]) of the resource elements of the antenna port carrying the DL PRS reference signal configured for RSRP measurement within the considered measurement frequency bandwidth. In some examples, for FR1, the reference point of the DL PRS-RSRP can be the antenna connector of the UE. For FR2, the DL PRS-RSRP can be measured based on the combined signal from the antenna elements corresponding to a given receiver branch. For FR1 and FR2, if the UE uses receiver diversity, the reported DL PRS-RSRP value may not be lower than the corresponding DL PRS-RSRP of any individual receiver branch in the individual receiver branches. Similarly, the UL SRS-RSRP can be defined as the linear average of the power contributions (in [W]) of the resource elements carrying the sounding reference signal (SRS). The UL SRS-RSRP can be measured within the considered measurement frequency bandwidth, in the configured measurement occasion, by the configured resource elements. In some examples, for FR1, the reference point of the UL SRS-RSRP can be the antenna connector of the base station (e.g., gNB). For FR2, the UL SRS-RSRP can be measured based on the combined signal from the antenna elements corresponding to a given receiver branch. For FR1 and FR2, if the base station uses receiver diversity, the reported UL SRS-RSRP value may not be lower than the corresponding UL SRS-RSRP of any individual receiver branch in the individual receiver branches.

[0081] The PRS-path RSRP (PRS-RSRPP) can be defined as the power of the linear average of the channel response at the i-th path delay of the resource elements carrying the DL PRS signal configured for measurement, where the DL PRS-RSRPP of the first path delay is the power contribution corresponding to the path first detected in time. In some examples, the PRS path phase measurement can refer to the phase associated with the i-th path of the channel derived using the PRS resources.

[0082] DL-AoD positioning can utilize the measured DL-PRS-RSRP of the downlink signals received at the UE 404 from multiple TRPs 402, 406. The UE 404 measures the DL-PRS-RSRP of the received signals using the assistance data received from the positioning server, and the resulting measurement together with the azimuth of departure (A-AoD), zenith angle of departure (Z-AoD), and other configuration information are used to position the UE 404 relative to the adjacent TRPs 402, 406.

[0083] DL-TDOA positioning can utilize the downlink reference signal time difference (RSTD) (and / or DL-PRS-RSRP) of the downlink signals received at the UE 404 from multiple TRPs 402, 406. The UE 404 uses the assistance data received from the positioning server to measure the DL RSTD (and / or DL-PRS-RSRP) of the received signals, and the resulting measurements, together with other configuration information, are used to position the UE 404 relative to the neighboring TRPs 402, 406.

[0084] UL-TDOA positioning can utilize the uplink relative time of arrival (RTOA) (and / or UL-SRS-RSRP) of the uplink signals transmitted from the UE 404 at multiple TRPs 402, 406. The TRPs 402, 406 use the assistance data received from the positioning server to measure the UL-RTOA (and / or UL-SRS-RSRP) of the received signals, and the resulting measurements, together with other configuration information, are used to estimate the location of the UE 404.

[0085] UL-AoA positioning can utilize the measured azimuth of arrival (A-AoA) and zenith angle of arrival (Z-AoA) of the uplink signals transmitted from the UE 404 at multiple TRPs 402, 406. The TRPs 402, 406 use the assistance data received from the positioning server to measure the A-AoA and Z-AoA of the received signals, and the resulting measurements, together with other configuration information, are used to estimate the location of the UE 404. For the purposes of this disclosure, a positioning operation in which the UE provides measurements to a base station / location entity / server for use in calculating the UE location may be described as "UE-assisted", "UE-assisted positioning", and / or "UE-assisted location calculation", while a positioning operation in which the UE measures and calculates its own location may be described as "UE-based", "UE-based positioning", and / or "UE-based location calculation".

[0086] Additional positioning methods can be used to estimate the location of UE 404, such as, for example, UE-side UL-AoD and / or DL-AoA. Note that data / measurements from various techniques can be combined in various ways to increase accuracy, determine and / or enhance certainty, supplement / complete measurements, and / or replace / provide missing information. For example, some UE positioning mechanisms can be radio access technology (RAT)-dependent (e.g., the positioning of the UE is RAT-based), such as downlink positioning (e.g., measurements of observed time difference of arrival (OTDOA)), uplink positioning (e.g., measurements of uplink time difference of arrival (UTDOA)), and / or combined positioning based on DL and UL (e.g., measurements of round-trip time (RTT) relative to neighboring cells), etc. Some wireless communication systems can also support an enhanced cell ID (E-CID) positioning process based on radio resource management (RRM) measurements. On the other hand, some UE positioning mechanisms can be RAT-independent (e.g., the positioning of the UE does not depend on RAT), such as enhanced GNSS, and / or positioning techniques based on WLAN, Bluetooth, terrestrial beacon system (TBS), and / or sensors (e.g., barometric pressure sensors, motion sensors), etc. Some UE positioning mechanisms can be based on a hybrid model, in which multiple positioning methods are used, and these methods can include both RAT-dependent positioning techniques and RAT-independent positioning techniques (e.g., GNSS-OTDOA hybrid positioning).

[0087] Note that the terms "positioning reference signal" and "PRS" generally refer to specific reference signals used for positioning in NR and LTE systems. However, as used herein, the terms "positioning reference signal" and "PRS" can also refer to any type of reference signal that can be used for positioning, such as, but not limited to: PRS, TRS, PTRS, CRS, CSI-RS, DMRS, PSS, SSS, SSB, SRS, UL-PRS, etc., as defined in LTE and NR. In addition, the terms "positioning reference signal" and "PRS" can refer to downlink or uplink positioning reference signals, unless otherwise indicated by the context. To further distinguish the types of PRS, the downlink positioning reference signal can be referred to as "DL PRS", and the uplink positioning reference signal (e.g., SRS, PTRS for positioning) can be referred to as "UL-PRS". In addition, for signals that can be transmitted in both the uplink and downlink (e.g., DMRS, PTRS), these signals can be prefixed with "UL" or "DL" to distinguish the direction. For example, "UL-DMRS" can be distinguished from "DL-DMRS".

[0088] Some wireless communication systems (e.g., green networks) may support techniques for reducing network power consumption. In some examples, these power savings may occur during periods of low traffic (e.g., low load scenarios with low data arrival rates and fewer connected UEs). In such examples, network entities may reduce overall power consumption by using lower transmit power and / or fewer antennas (which may be referred to as entering an energy saving (ES) mode or power saving mode). However, using reduced transmit power and / or fewer antennas (e.g., entering a network energy saving / power saving mode) may affect the accuracy of the positioning process at other communication devices. For example, since UE positioning based on measured UL-AoA depends on the number of antennas for accurate angle measurement, changing the number of receive antennas may affect UL-AoA measurement accuracy.

[0089] Accordingly, if a network entity changes its operating mode (e.g., transmits / receives signals with a different number of antennas) or uses different transmit / receive parameters (e.g., settings, configurations, etc.) for different energy saving modes, the accuracy of the uplink-based positioning process may be adversely affected. For example, if a network entity operates with fewer antennas and / or reduced transmit / receive power, the UE may not be able to receive PRS from or send SRS to the network entity / node. Accordingly, some uplink-based positioning processes may not be suitable for wireless communication systems where network entities frequently transition between different energy saving modes or energy saving operations.

[0090] When network entities / nodes participating in uplink-based positioning operate in an energy saving mode (e.g., operate with a reduced number of antennas, with reduced transmit / receive power, and / or with reduced processing capabilities, etc.), aspects presented herein may improve the accuracy of uplink-based positioning such as UL-AoA positioning. In other words, aspects presented herein may enable a location server (e.g., LMF) to take into account different network power saving operations at different network nodes during a UE positioning session (e.g., a situation where the location of the UE is to be determined based on at least one positioning mechanism, such as in conjunction with Figure 4 as described). Aspects presented herein may also apply to both fast (dynamic) and slow network energy saving modes. For example, some network entities may be configured to continuously and dynamically switch their energy saving mode based on traffic load (e.g., switch to the energy saving mode whenever the traffic load is below a threshold), while other network entities may be configured to switch their energy saving mode based on a predefined schedule (e.g., switch to the energy saving mode during specific hours of the night).

[0091] Figure 5Communication flow 500 is an example illustrating a transmission and reception point (TRP) information exchange process initiated by a location management function (LMF) according to various aspects of the present disclosure. The numbers associated with communication flow 500 do not specify a particular time order and are only used as a reference for communication flow 500. The aspects presented herein illustrate an example TRP information exchange operation from a base station 502 (or network entity) to an LMF 504 for a UL-AoA positioning session.

[0092] At 506, the LMF 504 may determine that certain TRP configuration information is desired (e.g., as part of a periodic update or as triggered by operations, administration, and maintenance (OAM)) and transmit an NR positioning protocol A (NRPPa) TRP information request message to the base station 502. The TRP information request message may include an indication of which specific TRP configuration information is being requested.

[0093] At 508, in response, if an NRPPa TRP information response message is available at the base station 502, the base station 502 may provide the requested TRP information in the NRPPa TRP information response message. If the base station 502 cannot provide any information, it may return a TRP information failure message indicating the reason for the failure.

[0094] Figure 6 Communication flow 600 is an example illustrating an example UL-AoA positioning process according to various aspects of the present disclosure. The numbers associated with communication flow 600 do not specify a particular time order and are only used as a reference for communication flow 600. The aspects presented herein illustrate an example process in which an LMF 606 configures a serving base station 604 and one or more neighboring base stations 608 to perform positioning of a target device (e.g., UE 602) based on UL-AoA positioning.

[0095] At 610, the LMF 606 may use the process discussed in conjunction with Figure 5 to obtain TRP information specified for UL-AoA positioning from one or more base stations / TRPs (such as from the serving base station 604 and one or more neighboring base stations 608).

[0096] At 612, the LMF 606 may request the positioning capability of the UE 602, such as using an LTE positioning protocol (LPP) capability transfer process.

[0097] At 614, the LMF 606 may transmit an NRPPa positioning information request message to the serving base station 604 to request UL-SRS configuration information of the UE 602.

[0098] At 616, the serving base station 604 may determine resources available for UL-SRS and configure a UL-SRS resource set for the UE 602, as shown at 618.

[0099] At 620, the serving base station 604 may provide UL-SRS configuration information to the LMF 606, such as via an NRPPa positioning information response message.

[0100] At 622, in the case of semi-persistent (SP) or aperiodic (AP) SRS, the LMF 606 may request activation of UE SRS transmission by transmitting an NRPPa positioning activation request message to the serving base station 604 of the UE 602. Then, at 624 and 626, the serving base station 604 may activate UL-SRS transmission for the UE 602 and transmit an NRPPA positioning activation response message. The UE 602 may start UL-SRS transmission according to the time-domain behavior of the UL-SRS resource configuration.

[0101] At 628, the LMF 606 may provide UL-SRS configuration to the selected serving base station 604 and one or more neighboring base stations 608 in an NRPPa measurement request message. This message may include all information specified to enable the serving base station 604 / TRP to perform UL measurements.

[0102] At 630, each base station configured at 628 (e.g., the serving base station 604 and one or more neighboring base stations 608) may measure the UL-SRS transmission from the UE 602.

[0103] At 632, each base station configured at 628 (e.g., the serving base station 604 and one or more neighboring base stations 608) may report UL-SRS measurements to the LMF 606 in an NRPPa measurement response message.

[0104] At 634, the LMF 606 may transmit an NRPPa positioning deactivation message to the serving base station 604.

[0105] At 636, the LMF 606 may calculate and determine the location of the UE 602 based on the UL-SRS measurements obtained at 632.

[0106] In one aspect of the present disclosure, to improve the accuracy of uplink-based positioning (e.g., UL-AoA positioning) when a network entity / node (e.g., serving base station 604, one or more neighboring base stations 608, etc.) participating in uplink-based positioning is associated with at least one power saving mode, the network entity / node may be configured to provide / signal to a location server (e.g., LMF 606) different sets of available antenna panel configurations for the supported power saving modes. In some scenarios, different TRPs of a base station may support different antenna configurations across all / different power saving modes. For example, a first TRP may transmit / receive using four antenna panels during a first power saving mode and transmit / receive using six antenna panels during a second power saving mode, while a second TRP may transmit / receive using two antenna panels during the first power saving mode and transmit / receive using four antenna panels during the second power saving mode, and so on. For the purposes of the present disclosure, an antenna panel configuration may refer to a set of parameters associated with operating an antenna panel. For example, an antenna panel configuration may include the orientation of the antenna panel, the Tx / Rx power of the antenna panel, the number of antennas to be used (e.g., for azimuth and / or elevation measurements), etc.

[0107] In one example, each base station (e.g., serving base station 604, one or more neighboring base stations 608, etc.) may directly communicate to the LMF (e.g., LMF 606) its configuration associated with different power saving modes, such as during the TRP configuration information exchange at 610 (or at 506 and 508 of Figure 5 . In another example, alternatively, in addition to the configuration of the relevant neighboring base stations, the serving base station may also communicate its configuration associated with different power saving modes. For example, referring back to Figure 6 , the serving base station 604 may communicate (e.g., indicate or signal) to the LMF 606 its antenna configuration associated with different energy saving / power saving modes at (e.g., at 610), and the serving base station 604 may also communicate to the LMF 606 the antenna configuration associated with different energy saving / power saving modes of one or more neighboring base stations 608 at (e.g., at 610). In such a configuration and setup, one or more neighboring base stations 608 may be configured to indicate their antenna configurations to the serving base station 604 in a previous communication.

[0108] In another example, the information provided by the base station to the LMF (e.g., antenna configurations associated with different power saving modes) may include at least one current antenna configuration used by the associated base station and / or TRP for UL-AoA positioning. In the UL-AoA positioning method, the location of the UE may be estimated based on the UL-AoA (and UL-SRS-RSRP and UL-SRS-RSRPP) of the UL signals transmitted from the UE obtained at different TRPs and other configuration information. For example, this information or the at least one current antenna configuration may include the number of antennas to be used in UL azimuth measurement and / or the number of antennas to be used in UL elevation measurement. For the purposes of the present disclosure, in the global coordinate system (GCS), the azimuth measurement or UL azimuth measurement may refer to measuring the azimuth counterclockwise from the geographic north (e.g., from the TRP). For the local coordinate system (LCS), the azimuth may be measured counterclockwise from the x-axis of the LCS. On the other hand, the elevation measurement or UL azimuth measurement may refer to the situation where, in the GCS, the elevation is measured relative to the zenith above the horizontal direction (e.g., elevation 0 degrees points to the zenith and 90 degrees points to the horizon). For the LCS, the elevation may be measured relative to the z-axis of the LCS (e.g., elevation 0 degrees points to the z-axis and 90 degrees points to the x-y plane).

[0109] By way of illustration, return reference Figure 6 , at 610, the serving base station 604 may indicate to the LMF 606 that during normal operation (e.g., when the serving base station 604 is not in an energy saving mode), the serving base station 604 (or a particular set of TRPs of the serving base station 604) may use ten (10) antennas to measure the UL azimuth of the SRS transmitted from the UE (e.g., UE 602) and use twelve (12) antennas to measure the UL elevation of the SRS. The serving base station 604 may also indicate to the LMF 606 that during the first energy saving mode, the serving base station 604 (or a particular set of TRPs of the serving base station 604) may use six (6) antennas to measure the UL azimuth of the SRS and use eight (8) antennas to measure the UL elevation of the SRS, and during the second energy saving mode, the serving base station 604 (or a particular set of TRPs of the serving base station 604) may use four (4) antennas to measure the UL azimuth of the SRS and use four (4) antennas to measure the UL elevation of the SRS, and so on.

[0110] Based on the antenna configuration associated with each TRP / base station and its corresponding energy saving mode, the LMF may determine and indicate / communicate to the serving base station the UL-SRS transmission characteristics it requests, such as via as combined with Figure 6The NRPPa message location information request discussed in 614. For example, after receiving information / antenna configuration associated with different energy saving modes from the serving base station 604 (such as via the NRPPa TRP configuration information exchange message discussed in 610), the LMF 606 may determine one or more transmission characteristics / parameters of the SRS set to be sent by the UE (e.g., UE 602) during the UE's positioning session (e.g., which may be configured for UE 602 by the serving base station 604 at 618).

[0111] In another aspect of the present disclosure, if there is a change in the antenna configuration of a base station (or a TRP of the base station) during a UE positioning session (e.g., during the duration when the UE is configured to transmit SRS), such as when the base station or TRP enters an energy saving mode or switches to a different energy saving mode, the base station may be configured to transmit an update message to the LMF indicating the change in its antenna configuration (and / or the change in Tx / Rx power).

[0112] Figure 7 Is a communication flow 700 illustrating an example of a base station transmitting an update of its antenna configuration (or the antenna configuration of its TRP) to the LMF via a TRP configuration information exchange process according to various aspects of the present disclosure. The numbers associated with the communication flow 700 do not specify a particular time order and are only used as a reference for the communication flow 700.

[0113] As combined with Figure 5 506 and 508 and / or Figure 6 Described in 610, the LMF (e.g., LMF 606) may obtain TRP configuration information from a base station (e.g., the serving base station 604) such as by transmitting a TRP information request message to the base station and receiving a TRP information response message from the base station. Thus, in another aspect of the present disclosure, if the base station / TRP antenna configuration has changed during the UE SRS time duration (e.g., when the UE is transmitting SRS for UE positioning), as shown at 702 (which may be within Figure 6 610), the base station may transmit a TRP information update message to the LMF. The TRP information update message may also be referred to as an indication of the antenna configuration change, and the TRP information update message may include the antenna configuration mode to be used by the base station / TRP.

[0114] In one example, the base station may be configured to send / signal a TRP information update message (e.g., an indication of the antenna configuration change) to the LMF when a certain number (or fraction) of the TRPs change their antenna configuration. Such a configuration may enable reducing the communication exchange messages between the base station and the LMF. For example, if the base station (e.g., serving base station 604) is using ten (10) TRPs to receive SRS transmitted from a UE (e.g., UE 602), the base station may be configured to send a TRP information update message to the LMF (e.g., LMF 606) when more than four (4) TRPs (e.g., a quantity threshold) or more than 40% of its TRPs (e.g., a percentage threshold) have changed their antenna configuration (e.g., by transmitting / receiving using more or fewer antennas compared to the previous transmit / receive occasion). On the other hand, if fewer than four (4) TRPs or fewer than 40% of its TRPs have changed their antenna configuration, the base station may be inhibited from sending a TRP information update message to the LMF to save the communication exchange messages between the base station and the LMF.

[0115] In some examples, the quantity threshold or percentage threshold that triggers the base station to transmit a TRP information update message to the LMF may be determined by the LMF and signaled to the base station. For example, LMF 606 may determine that if more than four (4) TRPs or more than 40% of the TRPs of the serving base station 604 have changed their antenna configuration, the serving base station 604 is designated to transmit a TRP information update message to LMF 606 to report the updated antenna configuration of the TRPs (e.g., the TRPs that have changed their antenna configuration). Then, LMF 606 may signal this determination (e.g., the determined quantity / percentage threshold) to the serving base station 604 for the serving base station 604 to apply.

[0116] Based on the TRP information update message from the base station, the LMF (e.g., LMF 606) may update its measurement requests to one or more base stations (e.g., serving base station 604 and one or more neighboring base stations 608), such as via an NRPPa measurement request message as described in Figure 6 628. For example, based on the update information, the LMF may abort SRS measurements from certain TRPs (e.g., TRPs that have changed their antenna configuration or TRPs that use fewer than four antenna panels for Tx / Rx may be inhibited from measuring SRS). In another example, based on the update information, the LMF may request only one type of angle measurement from the TRPs (e.g., only calculate / measure the azimuth angle or only calculate / measure the elevation angle, etc.).

[0117] In some scenarios, configuring the base station to transmit a TRP information update message when a certain number or percentage of its TRPs have changed their antenna configuration may be a suitable approach for a network that employs a slow energy-saving mode (e.g., the network may be configured to switch its energy-saving mode based on a predefined schedule such as during specific hours of the night). Such a configuration may not be a suitable approach for a network that employs a fast (dynamic) energy-saving mode (e.g., the network may be configured to dynamically switch its energy-saving mode such as whenever the traffic load is below a threshold).

[0118] In another aspect of the present disclosure, in addition to (or as an alternative to) configuring the base station to transmit a TRP information update message when a certain number or percentage of its TRPs have changed their antenna configuration, the LMF may also be configured to specify a minimum number of antennas to be used for angle calculation (e.g., calculation of azimuth and / or elevation angles for SRS) at a TRP (e.g., a TRP participating in a UE positioning session). For example, referring back Figure 6 , at 610 (or at Figure 5 's 506), the LMF 606 may specify that at least N1 antennas will be used for azimuth estimation at the TRP and / or at least N2 antennas will be used for elevation estimation at the TRP (N1 and N2 are integers or percentages).

[0119] In response, if the number of antennas used by the TRP exceeds the preconfigured minimum number of antennas, the TRP may report angle measurements (e.g., at Figure 6 's 632). For example, if the LMF 606 specifies that at least (or at least) four (4) antennas will be used for azimuth estimation at the TRP, a TRP that uses at least four antennas for azimuth measurement may report its measurement (e.g., azimuth measurement of the SRS sent from the UE) and / or may participate in the UE positioning session. On the other hand, a TRP that uses fewer than four antennas for azimuth measurement may skip reporting its measurement or may be inhibited from participating in the UE positioning session. In another example, if the LMF 606 specifies that at least (or at least) four (4) antennas will be used for azimuth estimation and at least (or at least) two (2) antennas will be used for elevation estimation at the TRP, a TRP that uses at least four antennas for azimuth measurement and at least two antennas for elevation measurement may report its measurement and / or may participate in the UE positioning session. On the other hand, a TRP that does not meet at least one of the criteria (e.g., using at least four antennas for azimuth estimation or using at least two antennas for elevation estimation) may skip reporting its measurement or may be inhibited from participating in the UE positioning session. Such a configuration may be applicable to a network that operates based on a fast (dynamic) energy-saving mode because the LMF may not be specified to wait for a TRP information update message from a base station participating in a UE positioning session.

[0120] In some examples, if the number of antennas in the current antenna configuration of the TRP is lower than the minimum number configured by the LMF, the TRP may be configured to report an error message, such as an indication of insufficient antennas. For example, if the LMF specifies that at least four (4) antennas will be used for azimuth estimation, a TRP that cannot measure the azimuth of the SRS using at least four antennas may send an indication of insufficient antennas (and / or the currently supported number of antennas) to the LMF. This configuration can achieve additional network energy savings because the TRP may not monitor and measure the SRS if the TRP's configuration does not meet the LMF specification.

[0121] Figure 8 FIG. 800 is a diagram illustrating an example in which, in accordance with various aspects of the present disclosure, the LMF uses a TRP measurement request information message to indicate to one or more base stations the minimum number of antennas to be used for azimuth estimation and / or elevation estimation. As shown at 802, the LMF (e.g., LMF 606) may indicate to one or more base stations (e.g., serving base station 604 and one or more neighboring base stations 608) via an NRPPa message (e.g., via a "TRP measurement request information" message) the minimum number of antennas to be used for azimuth estimation (e.g., for measuring the azimuth of the SRS transmitted from UE 602) and / or the minimum number of antennas to be used for elevation estimation (e.g., for measuring the elevation of the SRS transmitted from UE 602).

[0122] In another aspect of the present disclosure, the LMF may request the minimum resolution capability and / or confidence metric per azimuth and / or per elevation from one or more base stations or TRPs. For example, since a higher number of antennas can provide higher resolution (e.g., higher measurement accuracy), the LMF (e.g., at Figure 6 610) may request that the TRP provide the minimum resolution capability / value and / or confidence metric per azimuth and / or per elevation. Thus, a TRP that meets the requested minimum resolution capability / value and / or confidence metric may report its measurements and / or participate in a UE positioning session, while a TRP that does not meet the requested minimum resolution capability / value and / or confidence metric may skip reporting its measurements and / or refrain from participating in a UE positioning session. Similarly, the TRP / base station may report its resolution capability and confidence metric at each measurement (e.g., at Figure 6 632).

[0123] In another aspect of the present disclosure, the TRP may be configured to be associated with a validity timer in which the TRP may perform SRS measurements or the TRP will report its antenna configuration. For example, returning to reference Figure 5At 508, the base station 502 may include an expiration timer associated with one or more TRPs of the base station 502 in the TRP information response / failure message. Based on the expiration timer, the LMF 504 may consider that the antenna configuration at one or more TRPs is valid for the duration of the expiration timer. For example, the expiration timer may indicate that the TRP of the base station 502 will be valid for ten (10) minutes (or a certain antenna configuration will be applied for ten minutes). In some examples, the value of the expiration timer may vary with the energy saving mode. For example, a first energy saving mode may be associated with a ten-minute expiration timer, and a second energy saving mode may be associated with a one-hour expiration timer, and so on. Then, when the expiration timer expires, the LMF may request an update of the TRP configuration from the TRP or the corresponding base station, or stop using the TRP for positioning measurements.

[0124] In another aspect of the present disclosure, in some scenarios, the TRP may not be able to support UL-AoA measurements in certain energy-saving modes (for example, the energy-saving mode of the TRP may disable UL-AoA measurements at the TRP). Therefore, the TRP may be configured to report errors in its measurement report to the LMF (and also with corresponding reasons (if available)) when the TRP is in an energy-saving mode that does not support UL-AoA measurements. Therefore, the LMF may be aware that the TRP cannot perform UL-AoA measurements, and the LMF may exclude the measurements of the TRP from the UE positioning. In some examples, which energy-saving modes the TRP supports may be determined entirely by the TRP. In other examples, which energy-saving modes the TRP supports may be determined by the LMF, such as based on resolution capability information associated with each energy-saving mode. In addition, the TRP or base station may also communicate to the LMF a set of energy-saving modes that do not support UL-AoA, and when the TRP / base station is in an energy-saving mode that does not support UL-AoA, the LMF may exclude the TRP / base station from the UE positioning session.

[0125] Figure 9 900 is a flow chart of a method of wireless communication. The method may be performed by a network entity (e.g., LMF 166, 504, 606; network entity 1160). The method may enable the network entity to consider different network energy saving / power saving operations at different base stations and TRPs during a UE positioning session to improve the efficiency and accuracy of UE positioning.

[0126] At 902, a network entity may receive information indicating a set of antenna panel configurations for a plurality of network nodes, wherein the set of antenna panel configurations is associated with a set of energy saving modes, such as in conjunction with Figures 5 to 8 For example, in Figure 6 At 610, the LMF 606 may receive TRP configuration information associated with the serving base station 604 and one or more neighboring base stations 608, such asFigure 8 as shown at 802. The reception of the TRP configuration information may be performed by, for example, Figure 11 the UE positioning configuration component 197, the network processor 1112, and / or the network interface 1180 of the network entity 1160 in

[0127] In one example, the set of antenna panel configurations is different between two network nodes among multiple network nodes or between two power saving modes among a set of power saving modes.

[0128] In another example, each antenna panel configuration in the set of antenna panel configurations includes a first number of antennas to be used in UL azimuth measurement and a second number of antennas to be used in UL elevation measurement in one power saving mode among the set of power saving modes

[0129] In another example, the set of antenna panel configurations for each of the multiple network nodes is received from each corresponding network node.

[0130] In another example, the multiple network nodes include a serving network node of the UE and one or more non-serving network nodes, and the network entity may receive the set of antenna panel configurations for the one or more non-serving network nodes via the serving network node.

[0131] In another example, the network entity is a location server or an LMF, and the multiple network nodes include at least one base station, components of at least one base station, at least one TRP, or a combination thereof.

[0132] In another example, each antenna panel configuration in the set of antenna panel configurations is associated with a timer. In such an example, the timer varies with the corresponding power saving mode. In such an example, if the timer associated with the antenna panel configuration of a network node among the multiple network nodes expires, the network entity may send a request to the network node to report an updated antenna panel configuration.

[0133] At 904, the network entity may send an indication of one or more UL-SRS transmission parameters for the UE in a UE positioning session based on information indicating the set of antenna panel configurations for the multiple network nodes, such as in conjunction with Figure 6 as described. For example, at 628, the LMF 606 may send an indication of one or more UL-SRS transmission parameters for the UE 602 in a UE positioning session based on the TRP configuration information indicating the set of antenna panel configurations for the serving base station 604 and one or more neighboring base stations 608. The sending of the indication of one or more UL-SRS transmission parameters for the UE may be performed by, for example, Figure 11by the UE positioning configuration component 197, network processor 1112, and / or network interface 1180 of the network entity 1160 in

[0134] In one example, the network entity may send one or more UL-SRS transmission parameters to the UE via the UE's serving network node.

[0135] In another example, the indication is associated with a configuration for the UE to send a set of UL-SRSs to multiple network nodes based on one or more UL-SRS transmission parameters.

[0136] In another example, the information further includes the current antenna configuration used by each of the multiple network nodes to receive a set of UL-SRSs from the UE or to measure the UL-AoA of the set of UL-SRSs.

[0137] At 906, the network entity may receive a second indication that at least one of the multiple network nodes is switching to a different antenna panel configuration, and the network entity may send a measurement update request to one or more of the multiple network nodes based on the second indication, such as in conjunction with Figure 6 and Figure 7 as described. For example, at 702 in Figure 7 , the LMF 606 may receive a TRP information update message from the serving base station 604 indicating that at least one TRP is switching to a different antenna panel configuration. In response, at 628 in Figure 6 , the LMF 606 may send a measurement update request to the serving base station 604 and one or more neighboring base stations 608 based on the TRP information update message. The reception of the second indication and / or the sending of the measurement update request may be performed by, for example, Figure 11 the UE positioning configuration component 197, network processor 1112, and / or network interface 1180 of the network entity 1160 in

[0138] At 908, the network entity may send a second indication of the minimum number of antennas to be used to measure the UL-AoA of a set of UL-SRSs transmitted from the UE in a UE positioning session, where the indication is sent to the multiple network nodes, and the network entity may receive UL-AoA measurements of the set of UL-SRSs transmitted from the UE from a first set of network nodes among the multiple network nodes, where the first set of network nodes is capable of measuring the UL-AoA of the set of UL-SRSs transmitted from the UE using at least the minimum number of antennas, such as in conjunction with Figures 5 to 7 as described. For example, in Figure 6At 610, the LMF 606 may send an indication of the minimum number of antennas to be used for measuring the UL-AoA of the UL-SRS set transmitted from the UE 602 to the serving base station 604 and one or more neighboring base stations 608. In response, the LMF 606 may receive UL-AoA measurements of the UL-SRS set transmitted from the UE 602 from a TRP / base station capable of measuring the UL-AoA of the UL-SRS set transmitted from the UE 602 using at least the minimum number of antennas. The sending of the second indication and / or the receiving of the UL-AoA measurements may be performed by, for example Figure 11 the UE positioning configuration component 197, the network processor 1112, and / or the network interface 1180 of the network entity 1160 in

[0139] In one example, the minimum number of antennas includes at least one of the following: a first minimum number of antennas to be used for azimuth estimation, or a second minimum number of antennas to be used for elevation estimation.

[0140] In another example, the network entity may receive a notification from a second set of network nodes among the multiple network nodes, the notification indicating that the second set of network nodes cannot use at least the minimum number of antennas to measure the UL-AoA of the UL-SRS set transmitted from the UE. In such an example, the second set of network nodes is configured to skip monitoring the UL-SRS set transmitted from the UE.

[0141] In another example, a second indication of the minimum number of antennas to be used for measuring the UL-AoA is sent to the multiple network nodes via a measurement request information message.

[0142] At 910, the network entity may receive a second indication indicating that at least one network node among the multiple network nodes does not support measuring the UL-AoA of the UL-SRS in at least one energy-saving mode in the set of energy-saving modes, and if the at least one network node among the multiple network nodes is in an energy-saving mode that does not support measuring the UL-AoA of the UL-SRS, the network entity may exclude the at least one network node among the multiple network nodes from the UE positioning session, such as in conjunction with Figures 5 to 8 described. For example, at Figure 6 610, the LMF 606 may receive an indication that the TRP does not support measuring the UL-AoA of the UL-SRS in certain energy-saving modes, and if the TRP is in an energy-saving mode that does not support measuring the UL-AoA of the UL-SRS, the LMF 606 may exclude the TRP from the UE positioning session. The receiving of the second indication and / or the exclusion of at least one network node among the multiple network nodes from the UE positioning session may be performed by, for example Figure 11by the UE positioning configuration component 197, network processor 1112, and / or network interface 1180 of network entity 1160 in

[0143] Figure 10 FIG. 1000 is a flow chart of a method of wireless communication. The method may be performed by a network entity (e.g., LMF 166, 504, 606; network entity 1160). The method may enable the network entity to consider different network energy saving / power saving operations at different base stations and TRPs during a UE positioning session to improve the efficiency and accuracy of UE positioning.

[0144] At 1002, the network entity may receive information indicating a set of antenna panel configurations for a plurality of network nodes, where the set of antenna panel configurations is associated with a set of energy saving modes, such as those described in conjunction with Figures 5 to 8 For example, at 610 in Figure 6 LMF 606 may receive TRP configuration information associated with serving base station 604 and one or more neighboring base stations 608, where the TRP configuration information is associated with a set of energy saving modes, such as those shown at 802 in Figure 8 The reception of the TRP configuration information may be performed by, for example, Figure 11 the UE positioning configuration component 197, network processor 1112, and / or network interface 1180 of network entity 1160 in

[0145] In one example, the set of antenna panel configurations is different between two network nodes among the plurality of network nodes or between two energy saving modes among the set of energy saving modes.

[0146] In another example, each antenna panel configuration in the set of antenna panel configurations includes a first number of antennas to be used in UL azimuth measurement and a second number of antennas to be used in UL elevation measurement in one energy saving mode among the set of energy saving modes.

[0147] In another example, the set of antenna panel configurations for each network node among the plurality of network nodes is received from each corresponding network node.

[0148] In another example, the plurality of network nodes includes a serving network node of the UE and one or more non-serving network nodes, and the network entity may receive the set of antenna panel configurations for the one or more non-serving network nodes via the serving network node.

[0149] In another example, the network entity is a location server or an LMF, and the plurality of network nodes includes at least one base station, components of at least one base station, at least one TRP, or a combination thereof.

[0150] In another example, each antenna panel configuration in the set of antenna panel configurations is associated with a timer. In such an example, the timer varies with the corresponding energy-saving mode. In such an example, if the timer associated with the antenna panel configuration of a network node among multiple network nodes expires, the network entity may send a request to that network node to report an updated antenna panel configuration.

[0151] At 1004, the network entity may send an indication of one or more UL-SRS transmission parameters for the UE in a UE positioning session based on information indicating a set of antenna panel configurations for multiple network nodes, such as in conjunction with Figure 6 as described. For example, at 628, the LMF 606 may send an indication of one or more UL-SRS transmission parameters for the UE 602 in a UE positioning session based on the TRP configuration information indicating a set of antenna panel configurations for the serving base station 604 and one or more neighboring base stations 608. The sending of the indication of one or more UL-SRS transmission parameters for the UE may be performed by, for example Figure 11 the UE positioning configuration component 197, the network processor 1112, and / or the network interface 1180 of the network entity 1160 in

[0152] In one example, the network entity may send one or more UL-SRS transmission parameters to the UE via the serving network node of the UE.

[0153] In another example, the indication is associated with a configuration in which the UE sends a set of UL-SRSs to multiple network nodes based on one or more UL-SRS transmission parameters.

[0154] In another example, the information further includes the current antenna configuration used by each network node among the multiple network nodes to receive a set of UL-SRSs from the UE or to measure the UL-AoA of the set of UL-SRSs.

[0155] In another example, the network entity may receive a second indication that at least one network node among the multiple network nodes is switching to a different antenna panel configuration, and the network entity may send a measurement update request to one or more network nodes among the multiple network nodes based on the second indication, such as in conjunction with Figure 6 and Figure 7 as described. For example, at Figure 7 702 of Figure 6At 628, the LMF 606 may send a measurement update request to the serving base station 604 and one or more neighboring base stations 608 based on the TRP information update message. The reception of the second indication and / or the sending of the measurement update request may be performed by, for example, Figure 11 the UE positioning configuration component 197, the network processor 1112, and / or the network interface 1180 of the network entity 1160 in

[0156] In another example, the network entity may send, in a UE positioning session, a second indication of the minimum number of antennas to be used for measuring the UL-AoA of the UL-SRS set transmitted from the UE, where the indication is sent to a plurality of network nodes, and the network entity may receive UL-AoA measurements of the UL-SRS set transmitted from the UE from a first set of network nodes among the plurality of network nodes, where the first set of network nodes is capable of measuring the UL-AoA of the UL-SRS set transmitted from the UE using at least the minimum number of antennas, such as in combination with Figures 5 to 7 described. For example, at Figure 6 610, the LMF 606 may send an indication of the minimum number of antennas to be used for measuring the UL-AoA of the UL-SRS set transmitted from the UE 602 to the serving base station 604 and one or more neighboring base stations 608. In response, the LMF 606 may receive UL-AoA measurements of the UL-SRS set transmitted from the UE 602 from the TRP / base station capable of measuring the UL-AoA of the UL-SRS set transmitted from the UE 602 using at least the minimum number of antennas. The sending of the second indication and / or the reception of the UL-AoA measurement may be performed by, for example, Figure 11 the UE positioning configuration component 197, the network processor 1112, and / or the network interface 1180 of the network entity 1160 in

[0157] In another example, a network entity may receive a second indication that at least one of a plurality of network nodes does not support measuring UL-AoA of UL-SRS in at least one of a set of energy saving modes, and if the at least one of the plurality of network nodes is in an energy saving mode that does not support measuring UL-AoA of UL-SRS, the network entity may exclude the at least one of the plurality of network nodes from a UE positioning session, such as in conjunction with Figures 5 to 8 as described. For example, at 610 of Figure 6 , the LMF 606 may receive an indication that the TRP does not support measuring UL-AoA of UL-SRS in certain energy saving modes, and if the TRP is in an energy saving mode that does not support measuring UL-AoA of UL-SRS, the LMF 606 may exclude the TRP from a UE positioning session. The reception of the second indication and / or the exclusion of at least one of the plurality of network nodes from a UE positioning session may be performed by, for example, Figure 11 the UE positioning configuration component 197, the network processor 1112, and / or the network interface 1180 of the network entity 1160 in

[0158] Figure 11 FIG. 1100 is a diagram illustrating an example of a hardware implementation for the network entity 1160. In one example, the network entity 1160 may be located within the core network 120. The network entity 1160 may include a network processor 1112. The network processor 1112 may include on-chip memory 1112'. In some aspects, the network entity 1160 may further include an additional memory module 1114. The network entity 1160 communicates with the CU 1102 directly (e.g., a fronthaul link) or indirectly (e.g., through the RIC) via a network interface 1180. The on-chip memory 1112' and the additional memory module 1114 may each be regarded as a computer-readable medium / memory. Each computer-readable medium / memory may be non-transitory. The processor 1112 is responsible for general processing, including executing software stored on the computer-readable medium / memory. The software, when executed by the corresponding processor, causes the processor to perform the various functions described above. The computer-readable medium / memory may also be used to store data manipulated by the processor when executing the software.

[0159] As discussed above, the UE positioning configuration component 197 is configured to receive information indicating a set of antenna panel configurations for a plurality of network nodes, where the set of antenna panel configurations is associated with a set of power saving modes. The UE positioning configuration component 197 may also be configured to send an indication of one or more UL-SRS transmission parameters for the UE in a UE positioning session based on the information indicating the set of antenna panel configurations for the plurality of network nodes. The UE positioning configuration component 197 may be within the processor 1112. The UE positioning configuration component 197 may be one or more hardware components specifically configured to perform the stated processes / algorithms, implemented by one or more processors configured to perform the stated processes / algorithms, stored in a computer-readable medium for implementation by one or more processors, or some combination of these operations. The network entity 1160 may include a variety of components configured for various functions. In one configuration, the network entity 1160 includes components for receiving information indicating a set of antenna panel configurations for a plurality of network nodes, where the set of antenna panel configurations is associated with a set of power saving modes. The network entity 1160 may also include components for sending an indication of one or more UL-SRS transmission parameters for the UE in a UE positioning session based on the information indicating the set of antenna panel configurations for the plurality of network nodes.

[0160] In one configuration, the set of antenna panel configurations is different between two of the plurality of network nodes or between two of the set of power saving modes.

[0161] In another configuration, each antenna panel configuration in the set of antenna panel configurations includes a first number of antennas to be used in UL azimuth measurement and a second number of antennas to be used in UL elevation measurement in one of the power saving modes in the set of power saving modes.

[0162] In another configuration, the indication is associated with a configuration for the UE to send a set of UL-SRS to the plurality of network nodes based on one or more UL-SRS transmission parameters.

[0163] In another configuration, the set of antenna panel configurations for each of the plurality of network nodes is received from each corresponding network node.

[0164] In another configuration, the plurality of network nodes includes a serving network node of the UE and one or more non-serving network nodes, and the network entity 1160 may also include components for receiving the set of antenna panel configurations for the one or more non-serving network nodes via the serving network node.

[0165] In another configuration, the network entity is a location server or an LMF, and the plurality of network nodes includes at least one base station, components of at least one base station, at least one TRP, or a combination thereof.

[0166] In another configuration, each antenna panel configuration in the set of antenna panel configurations is associated with a timer. In this configuration, the timer varies with the corresponding energy saving mode. In this configuration, the network entity 1160 may further include components for sending a request for reporting an updated antenna panel configuration to the network node in case the timer associated with the antenna panel configuration of the network node among the plurality of network nodes expires.

[0167] In another configuration, the network entity 1160 may further include components for sending one or more UL-SRS transmission parameters to the UE via the serving network node of the UE.

[0168] In another configuration, the information further includes the current antenna configuration used by each of the plurality of network nodes to receive a UL-SRS set or to measure the UL-AoA of the UL-SRS set from the UE.

[0169] In another configuration, the network entity 1160 may further include: components for receiving a second indication that at least one of the plurality of network nodes is switching to a different antenna panel configuration; and components for sending a measurement update request to one or more of the plurality of network nodes based on the second indication. In this configuration, the second indication is received based on a defined number or a defined fraction of the plurality of network nodes switching to a different antenna panel configuration.

[0170] In another configuration, the network entity 1160 may further include components for sending, in a UE positioning session, a second indication of a minimum number of antennas to be used for measuring the UL-AoA of a UL-SRS set transmitted from the UE, where the indication is sent to a plurality of network nodes; and components for receiving, from a first set of network nodes among the plurality of network nodes, UL-AoA measurements of the UL-SRS set transmitted from the UE, where the first set of network nodes is capable of measuring the UL-AoA of the UL-SRS set transmitted from the UE using at least the minimum number of antennas. In this configuration, the minimum number of antennas includes at least one of the following: a first minimum number of antennas to be used for azimuth estimation, or a second minimum number of antennas to be used for elevation estimation. In another configuration, the network entity 1160 may further include components for receiving, from a second set of network nodes among the plurality of network nodes, a notification indicating that the second set of network nodes is unable to measure the UL-AoA of the UL-SRS set transmitted from the UE using at least the minimum number of antennas. In this configuration, the second set of network nodes is configured to skip monitoring the UL-SRS set transmitted from the UE. In another configuration, the second indication of the minimum number of antennas to be used for measuring the UL-AoA is sent to the plurality of network nodes via a measurement request information message.

[0171] In another configuration, the network entity 1160 may further include: components for receiving a second indication indicating that at least one network node among the plurality of network nodes does not support measuring the UL-AoA of the UL-SRS in at least one energy-saving mode in an energy-saving mode set; and components for excluding, from the UE positioning session, the at least one network node among the plurality of network nodes when the at least one network node is in an energy-saving mode that does not support measuring the UL-AoA of the UL-SRS.

[0172] The component may be the UE positioning configuration component 197 of the network entity 1160 configured to perform the functions recorded by the component.

[0173] Figure 12 It is a flowchart 1200 of a method for wireless communication. The method may be performed by a base station (e.g., base stations 102, 502; serving base station 604; one or more neighboring base stations 608; network entity 1402). The method may enable the base station to report different network energy-saving / power-saving operations associated with its TRP during a UE positioning session to improve the efficiency and accuracy of UE positioning.

[0174] At 1202, the base station may send information indicating an antenna panel configuration set for the network node or for a plurality of network nodes including the network node, where the antenna panel configuration set is associated with a set of energy saving modes, and where the information is sent to a network entity, such as in conjunction with Figures 5 to 8 as described. For example, at 610 of Figure 6 , the serving base station 604 and one or more neighboring base stations 608 may send their TRP configuration information to the LMF 606, where the TRP configuration information is associated with a set of energy saving modes, such as shown at 802 of Figure 8 . The sending of the information indicating the antenna panel configuration set may be performed by, for example, the antenna configuration indication component 199 and / or the communication interfaces 1418, 1438, and / or 1448 of the network entity 1402 in Figure 14 .

[0175] In one example, each antenna panel configuration in the antenna panel configuration set includes a first number of antennas to be used in UL azimuth measurement and a second number of antennas to be used in UL elevation measurement in one of the energy saving modes in the set of energy saving modes.

[0176] At 1204, the base station may receive an indication of one or more UL-SRS transmission parameters for the UE in a UE positioning session based on the information indicating the antenna panel configuration set for a plurality of network nodes, such as in conjunction with Figure 6 as described. For example, at 628, the serving base station 604 and one or more neighboring base stations 608 may receive an indication of one or more UL-SRS transmission parameters for the UE 602 from the LMF 606 in a UE positioning session based on the TRP configuration information indicating the antenna panel configuration set for the serving base station 604 and one or more neighboring base stations 608. The receiving of the indication of one or more UL-SRS transmission parameters may be performed by, for example, the antenna configuration indication component 199 and / or the communication interfaces 1418, 1438, and / or 1448 of the network entity 1402 in Figure 14 .

[0177] In one example, the antenna panel configuration set is different between two of the energy saving modes in the set of energy saving modes.

[0178] In another example, the indication is associated with a configuration for the UE to send a UL-SRS set to a plurality of network nodes based on one or more UL-SRS transmission parameters.

[0179] In another example, the information further includes the current antenna configuration used by the network node to receive the UL-SRS set from the UE or to measure the UL-AoA of the UL-SRS set.

[0180] In another example, the network entity is a location server or LMF, and the network node is a base station, a component of the base station, or a TRP.

[0181] In another example, each antenna panel configuration in the set of antenna panel configurations is associated with a timer. In such an example, the timer varies with the corresponding energy saving mode. In such an example, if the timer associated with the antenna panel configuration expires, the base station may receive a request to report an updated antenna panel configuration.

[0182] At 1206, the base station may configure one or more UL-SRS transmission parameters for the UE in a UE positioning session based on information indicating a set of antenna panel configurations for multiple network nodes, where the indication is associated with a configuration for the UE to transmit a set of UL-SRSs to multiple network nodes based on one or more UL-SRS transmission parameters, such as in conjunction with Figure 6 as described. For example, at 618, serving base station 604 configures SRS transmission parameters for UE 602 in a UE positioning session based on information indicating a set of antenna panel configurations for serving base station 604 and one or more neighboring base stations 608, where the indication is associated with a configuration for the UE to transmit a set of UL-SRSs to multiple network nodes based on one or more UL-SRS transmission parameters. The configuration of one or more UL-SRS transmission parameters may be performed by, for example, Figure 14 the antenna configuration indication component 199 and / or the communication interfaces 1418, 1438, and / or 1448 of network entity 1402 in

[0183] At 1208, the base station may configure at least one TRP for a measurement set based on information indicating a set of antenna panel configurations for multiple network nodes, such as in conjunction with Figure 6 as described. For example, at Figure 6 628 of Figure 14 serving base station 604 may configure at least one TRP for a measurement set based on information indicating a set of antenna panel configurations for serving base station 604. The configuration of at least one TRP may be performed by, for example,

[0184] At 1210, the base station may send a second indication that a network node is switching to a different antenna panel configuration, and the base station may receive a measurement update request from the network entity based on the second indication, such as in conjunction with Figure 6 and Figure 7 as described. For example, at Figure 7At 702, the serving base station 604 may send a TRP information update message to the LMF 606 indicating that at least one TRP is switching to a different antenna panel configuration. In response, at Figure 6 At 628, the serving base station 604 may receive a measurement update request from the LMF 606 based on the TRP information update message. The sending of the second indication and / or the receiving of the measurement update request may be performed by, for example, Figure 14 the antenna configuration indication component 199 and / or the communication interfaces 1418, 1438, and / or 1448 of the network entity 1402 in

[0185] At 1212, the base station may send a second indication to the network entity indicating whether the power saving mode associated with the network node or with the antenna panel configuration of the network node supports UL-AoA measurement or does not support UL-AoA measurement, such as in conjunction with Figures 5 to 8 described. For example, at Figure 6 At 610, the serving base station 604 may send an indication to the LMF 606 indicating that the TRP does not support measuring UL-AoA of UL-SRS in certain power saving modes. The sending of the second indication may be performed by, for example, Figure 14 the antenna configuration indication component 199 and / or the communication interfaces 1418, 1438, and / or 1448 of the network entity 1402 in

[0186] In one example, the base station may receive, in a UE positioning session, a second indication of the minimum number of antennas to be used for measuring UL-AoA of UL-SRS transmitted from the UE, where the indication is received from the network entity, and if the network node is capable of using at least the minimum number of antennas to measure UL-AoA of a set of UL-SRS transmitted from the UE, the base station may send a UL-AoA measurement of the set of UL-SRS transmitted from the UE to the network entity. In such an example, the minimum number of antennas includes at least one of the following: a first minimum number of antennas to be used for azimuth estimation, or a second minimum number of antennas to be used for elevation estimation. In such an example, the base station may send a notification to the network entity indicating that the network node is not capable of using at least the minimum number of antennas to measure UL-AoA of a set of UL-SRS transmitted from the UE. In such an example, the base station may skip monitoring the set of UL-SRS transmitted from the UE.

[0187] Figure 13FIG. 1300 is a flow chart of a method of wireless communication. The method may be performed by a base station (e.g., base stations 102, 502; serving base station 604; one or more neighboring base stations 608; network entity 1402). The method may enable the base station to report different network energy saving / power saving operations associated with its TRP during a UE positioning session to improve the efficiency and accuracy of UE positioning.

[0188] At 1302, the base station may send information indicating a set of antenna panel configurations for the network node or for a plurality of network nodes including the network node, where the set of antenna panel configurations is associated with a set of energy saving modes, and where the information is sent to a network entity, such as in connection with Figures 5 to 8 as described. For example, at 610 of Figure 6 , the serving base station 604 and one or more neighboring base stations 608 may send their TRP configuration information to the LMF 606, where the TRP configuration information is associated with a set of energy saving modes, such as shown at 802 of Figure 8 . The sending of the information indicating the set of antenna panel configurations may be performed by, for example, Figure 14 the antenna configuration indication component 199 and / or the communication interfaces 1418, 1438, and / or 1448 of the network entity 1402 in

[0189] In one example, each antenna panel configuration in the set of antenna panel configurations includes a first number of antennas to be used in UL azimuth measurement and a second number of antennas to be used in UL elevation measurement in one of the energy saving modes in the set of energy saving modes.

[0190] At 1304, the base station may receive an indication of one or more UL-SRS transmission parameters for the UE in a UE positioning session based on the information indicating the set of antenna panel configurations for the plurality of network nodes, such as in connection with Figure 6 as described. For example, at 628, the serving base station 604 and one or more neighboring base stations 608 may receive an indication of one or more UL-SRS transmission parameters for the UE 602 from the LMF 606 in a UE positioning session based on the TRP configuration information indicating the set of antenna panel configurations for the serving base station 604 and one or more neighboring base stations 608. The receiving of the indication of one or more UL-SRS transmission parameters may be performed by, for example, Figure 14 the antenna configuration indication component 199 and / or the communication interfaces 1418, 1438, and / or 1448 of the network entity 1402 in

[0191] In one example, the set of antenna panel configurations is different between two of the energy saving modes in the set of energy saving modes.

[0192] In another example, the indication is associated with a configuration in which the UE transmits a set of UL-SRSs to a plurality of network nodes based on one or more UL-SRS transmission parameters.

[0193] In another example, the information further includes a current antenna configuration used by the network node to receive a set of UL-SRSs from the UE or to measure the UL-AoA of the set of UL-SRSs.

[0194] In another example, the network entity is a location server or an LMF, and the network nodes are base stations, components of a base station, or TRPs.

[0195] In another example, each antenna panel configuration in the set of antenna panel configurations is associated with a timer. In such an example, the timer varies with the corresponding energy-saving mode. In such an example, if the timer associated with the antenna panel configuration expires, the base station may receive a request to report an updated antenna panel configuration.

[0196] In another example, the base station may configure one or more UL-SRS transmission parameters for the UE in a UE positioning session based on information indicating a set of antenna panel configurations for a plurality of network nodes, where the indication is associated with a configuration in which the UE transmits a set of UL-SRSs to a plurality of network nodes based on one or more UL-SRS transmission parameters, such as in conjunction with Figure 6 as described. For example, at 618, the serving base station 604 configures SRS transmission parameters for the UE 602 in a UE positioning session based on information indicating a set of antenna panel configurations for the serving base station 604 and one or more neighboring base stations 608, where the indication is associated with a configuration in which the UE transmits a set of UL-SRSs to a plurality of network nodes based on one or more UL-SRS transmission parameters. The configuration of one or more UL-SRS transmission parameters may be performed by, for example, Figure 14 the antenna configuration indication component 199 and / or the communication interfaces 1418, 1438, and / or 1448 of the network entity 1402 in

[0197] In another example, the base station may configure at least one TRP for measurement of a set based on information indicating a set of antenna panel configurations for a plurality of network nodes, such as in conjunction with Figure 6 as described. For example, at Figure 6 628, the serving base station 604 may configure at least one TRP for measurement of a set based on information indicating a set of antenna panel configurations for the serving base station 604. The configuration of at least one TRP may be performed by, for example, Figure 14 the antenna configuration indication component 199 and / or the communication interfaces 1418, 1438, and / or 1448 of the network entity 1402 in

[0198] In another example, the base station may send a second indication that a network node is switching to a different antenna panel configuration, and the base station may receive a measurement update request from a network entity based on the second indication, such as in conjunction with Figure 6 and Figure 7 as described. For example, at 702 of Figure 7 , the serving base station 604 may send a TRP information update message to the LMF 606 indicating that at least one TRP is switching to a different antenna panel configuration. In response, at 628 of Figure 6 , the serving base station 604 may receive a measurement update request from the LMF 606 based on the TRP information update message. The sending of the second indication and / or the receiving of the measurement update request may be performed by, for example, the antenna configuration indication component 199 and / or the communication interfaces 1418, 1438, and / or 1448 of the network entity 1402 in Figure 14 . In one example, the second indication is sent based on a defined number of network nodes switching to a different antenna panel configuration.

[0199] In another example, the base station may send a second indication to a network entity indicating whether an energy-saving mode associated with a network node or with the antenna panel configuration of a network node supports UL-AoA measurement or does not support UL-AoA measurement, such as in conjunction with Figures 5 to 8 as described. For example, at 610 of Figure 6 , the serving base station 604 may send an indication to the LMF 606 that the TRP does not support measuring the UL-AoA of UL-SRS in certain energy-saving modes. The sending of the second indication may be performed by, for example, the antenna configuration indication component 199 and / or the communication interfaces 1418, 1438, and / or 1448 of the network entity 1402 in Figure 14 .

[0200] In another example, the base station may receive, in a UE positioning session, a second indication of the minimum number of antennas to be used for measuring the UL-AoA of UL-SRS transmitted from a UE, where the indication is received from a network entity, and if a network node is capable of measuring the UL-AoA of a set of UL-SRS transmitted from the UE using at least the minimum number of antennas, the base station may send a UL-AoA measurement of the set of UL-SRS transmitted from the UE to the network entity. In such an example, the minimum number of antennas includes at least one of the following: a first minimum number of antennas to be used for azimuth estimation, or a second minimum number of antennas to be used for elevation estimation. In such an example, the base station may send a notification to the network entity indicating that the network node is not capable of measuring the UL-AoA of the set of UL-SRS transmitted from the UE using at least the minimum number of antennas. In such an example, the base station may skip monitoring the set of UL-SRS transmitted from the UE.

[0201] Figure 14 FIG. 1400 is a diagram illustrating an example of a hardware implementation for network entity 1402. Network entity 1402 may be a BS, a component of a BS, or may implement BS functionality. Network entity 1402 may include at least one of CU 1410, DU 1430, or RU 1440. For example, depending on the layer functionality handled by antenna configuration indication component 199, network entity 1402 may include CU 1410; both CU 1410 and DU 1430; each of CU 1410, DU 1430, and RU 1440; DU 1430; both DU 1430 and RU 1440; or RU 1440. CU 1410 may include CU processor 1412. CU processor 1412 may include on-chip memory 1412'. In some aspects, CU 1410 may also include additional memory module 1414 and communication interface 1418. CU 1410 communicates with DU 1430 via an intermediate transfer link such as the F1 interface. DU 1430 may include DU processor 1432. DU processor 1432 may include on-chip memory 1432'. In some aspects, DU 1430 may also include additional memory module 1434 and communication interface 1438. DU 1430 communicates with RU 1440 via a fronthaul link. RU 1440 may include RU processor 1442. RU processor 1442 may include on-chip memory 1442'. In some aspects, RU 1440 may also include additional memory module 1444, one or more transceivers 1446, antenna 1480, and communication interface 1448. RU 1440 communicates with UE 104. On-chip memories 1412', 1432', 1442' and additional memory modules 1414, 1434, 1444 may each be regarded as computer-readable media / memories. Each computer-readable media / memory may be non-transitory. Each of processors 1412, 1432, 1442 is responsible for general processing, including executing software stored on the computer-readable media / memory. The software, when executed by the corresponding processor, causes the processor to perform the various functions described above. The computer-readable media / memory may also be used to store data manipulated by the processor when executing the software.

[0202] As discussed above, the antenna configuration indication component 199 is configured to send information indicating a set of antenna panel configurations for the network node or for a plurality of network nodes including the network node, where the set of antenna panel configurations is associated with a set of power saving modes, and where the information is sent to a network entity. The antenna configuration indication component 199 may also be configured to receive an indication of one or more UL-SRS transmission parameters for a UE in a UE positioning session based on information indicating a set of antenna panel configurations for a plurality of network nodes. The antenna configuration indication component 199 may be within one or more processors of one or more of the CU 1410, DU 1430, and RU 1440. The antenna configuration indication component 199 may be one or more hardware components specifically configured to perform the stated processes / algorithms, implemented by one or more processors configured to perform the stated processes / algorithms, stored in a computer-readable medium for implementation by one or more processors, or some combination of these operations. The network entity 1402 may include various components configured for various functions. In one configuration, the network entity 1402 includes components for sending information indicating a set of antenna panel configurations for the network node or for a plurality of network nodes including the network node, where the information is sent to a network entity. The network entity 1402 may also include components for receiving an indication of one or more UL-SRS transmission parameters for a UE in a UE positioning session based on information indicating a set of antenna panel configurations for a plurality of network nodes.

[0203] In one configuration, the set of antenna panel configurations is different between two power saving modes in the set of power saving modes.

[0204] In another configuration, the set of antenna panel configurations is associated with the set of power saving modes, where each antenna panel configuration in the set of antenna panel configurations includes a first number of antennas to be used in UL azimuth measurement and a second number of antennas to be used in UL elevation measurement in one power saving mode in the set of power saving modes.

[0205] In another configuration, the indication is associated with a configuration for the UE to send a set of UL-SRSs to a plurality of network nodes based on one or more UL-SRS transmission parameters.

[0206] In another configuration, the information further includes the current antenna configuration used by the network node to receive the set of UL-SRSs from the UE or to measure the UL-AoA of the set of UL-SRSs.

[0207] In another configuration, the network entity is a location server or an LMF, and the network node is a base station, a component of a base station, or a TRP.

[0208] In another configuration, each antenna panel configuration in the set of antenna panel configurations is associated with a timer. In this configuration, the timer varies with the corresponding energy saving mode. In this configuration, network entity 1402 may also include components for receiving a request for an updated antenna panel configuration for reporting in the event that the timer associated with the antenna panel configuration expires.

[0209] In another configuration, network entity 1402 may also include components for configuring one or more UL-SRS transmission parameters for a UE in a UE positioning session based on information indicating a set of antenna panel configurations for a plurality of network nodes, where the indication is associated with a configuration in which the UE transmits a set of UL-SRS to the plurality of network nodes based on the one or more UL-SRS transmission parameters.

[0210] In another configuration, network entity 1402 may also include components for configuring at least one TRP for a measurement set based on information indicating a set of antenna panel configurations for a plurality of network nodes.

[0211] In another configuration, network entity 1402 may also include: components for sending a second indication that a network node is switching to a different antenna panel configuration; and components for receiving a measurement update request from a network entity based on the second indication. In this configuration, the second indication is sent based on a defined number of network nodes switching to a different antenna panel configuration.

[0212] In another configuration, network entity 1402 may also include components for sending a second indication to a network entity indicating whether the energy saving mode associated with the network node or with the antenna panel configuration of the network node supports UL-AoA measurement or does not support UL-AoA measurement.

[0213] In another configuration, network entity 1402 may further include: components for receiving, in a UE positioning session, a second indication of a minimum number of antennas to be used for measuring UL-AoA of UL-SRS transmitted from the UE, where the indication is received from a network entity; and components for sending, when the network node is capable of using at least the minimum number of antennas to measure UL-AoA of a set of UL-SRS transmitted from the UE, UL-AoA measurements of the set of UL-SRS transmitted from the UE to the network entity. In this configuration, the minimum number of antennas includes at least one of the following: a first minimum number of antennas to be used for azimuth estimation, or a second minimum number of antennas to be used for elevation estimation. In this configuration, network entity 1402 may further include components for sending a notification to the network entity, the notification indicating that the network node is not capable of using at least the minimum number of antennas to measure UL-AoA of a set of UL-SRS transmitted from the UE. In this configuration, network entity 1402 may further include components for skipping monitoring of a set of UL-SRS transmitted from the UE.

[0214] The component may be the antenna configuration indication component 199 of network entity 1402 configured to perform the functions recited by the component. As described above, network entity 1402 may include a TX processor 316, an RX processor 370, and a controller / processor 375. Thus, in one configuration, the component may be the TX processor 316, the RX processor 370, and / or the controller / processor 375 configured to perform the functions recited by the component.

[0215] It should be understood that the specific order or hierarchy of the blocks in the disclosed process / flowchart is merely illustrative of example methods. It should be understood that, based on design preferences, the specific order or hierarchy of the blocks in the process / flowchart may be rearranged. Further, some blocks may be combined or omitted. The appended method claims present the elements of the various blocks in a sample order, but are not limited to the specific order or hierarchy presented.

[0216] The foregoing description is provided to enable any person skilled in the art to practice the various aspects described herein. Various modifications to these aspects will be readily apparent to those skilled in the art, and the general principles defined herein may be applied to other aspects. Thus, the claims are not limited to the aspects described herein, but are to be accorded the full scope consistent with the language of the claims, and the singular forms of elements are not intended to mean "one and only one" but "one or more" unless specifically stated otherwise. Terms such as "if," "when," and "while" do not denote a direct temporal relationship or reaction. That is, these phrases, such as "when...," do not mean an immediate action in response to the occurrence of an action or during the occurrence of an action, but simply imply that if the condition is met, then the action will occur, without requiring a specific or immediate time limit for the occurrence of the action. The word "exemplary" is used herein to mean "serving as an example, instance, or illustration." Any aspect described herein as "exemplary" is not necessarily to be construed as preferred or having an advantage over other aspects. Unless specifically stated otherwise, the term "some" refers to one or more. Combinations such as "at least one of A, B, or C," "one or more of A, B, or C," "at least one of A, B, and C," "one or more of A, B, and C," and "any combination of A, B, C, or any of them," including any combination of A, B, and / or C, may include multiple A's, multiple B's, or multiple C's. Specifically, combinations such as "at least one of A, B, or C," "one or more of A, B, or C," "at least one of A, B, and C," "one or more of A, B, and C," and "any combination of A, B, C, or any of them" can be only A, only B, only C, A and B, A and C, B and C, or A and B and C, where any such combination may contain one or more members of A, B, or C. A set should be construed as a collection of elements, where the number of elements is one or more. Thus, for a set of X, X will include one or more elements. If a first device receives data from or sends data to a second device, the data may be received / sent directly between the first device and the second device, or indirectly between the first device and the second device through a collection of devices. All structural and functional equivalents of 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 covered by the claims. Moreover, nothing disclosed herein is intended to be dedicated to the public, whether or not such disclosure is expressly recited in the claims. The words "module," "mechanism," "element," "device," etc. are not intended to substitute for the word "component." Thus, no claim element is to be construed as a means-plus-function unless the element is expressly recited using the phrase "means for...".

[0217] As used herein, the phrase "based on" should not be construed to mean a closed set of information, one or more conditions, one or more factors, etc. In other words, the phrase "based on A" (where "A" can be information, a condition, a factor, etc.) should be construed as "at least based on A", unless specifically stated otherwise.

[0218] The following aspects are merely illustrative and can be combined with other aspects or teachings described herein without limitation.

[0219] Aspect 1 is a method for wireless communication at a network entity, the method comprising: receiving information indicating a set of antenna panel configurations for a plurality of network nodes, wherein the set of antenna panel configurations is associated with a set of energy saving modes; and transmitting an indication of one or more UL-SRS transmission parameters for a UE in a UE positioning session based on the information indicating the set of antenna panel configurations for the plurality of network nodes.

[0220] Aspect 2 is the method according to aspect 1, wherein each antenna panel configuration in the set of antenna panel configurations includes a first number of antennas to be used in UL azimuth measurement and a second number of antennas to be used in UL elevation measurement in one of the energy saving modes in the set of energy saving modes.

[0221] Aspect 3 is the method according to aspect 1 or 2, wherein the indication is associated with a configuration for the UE to transmit a set of UL-SRSs to the plurality of network nodes based on the one or more UL-SRS transmission parameters.

[0222] Aspect 4 is the method according to any one of aspects 1 to 3, wherein the set of antenna panel configurations is different between two of the plurality of network nodes or between two of the energy saving modes in the set of energy saving modes.

[0223] Aspect 5 is the method according to any one of aspects 1 to 4, wherein the set of antenna panel configurations for each of the plurality of network nodes is received from each corresponding network node.

[0224] Aspect 6 is the method according to any one of aspects 1 to 5, wherein the plurality of network nodes includes a serving network node of the UE and one or more non-serving network nodes, and the method further comprises: receiving, via the serving network node, the set of antenna panel configurations for the one or more non-serving network nodes.

[0225] Aspect 7 is the method according to any one of aspects 1 to 6, the method further comprising: transmitting, via a serving network node of the UE, the one or more UL-SRS transmission parameters to the UE.

[0226] Aspect 8 is the method according to any one of Aspects 1 to 7, wherein the information further includes the current antenna configuration used by each of the plurality of network nodes to receive the UL-SRS set from the UE or to measure the UL-AoA of the UL-SRS set.

[0227] Aspect 9 is the method according to any one of Aspects 1 to 8, the method further comprising: receiving a second indication that at least one of the plurality of network nodes is switching to a different antenna panel configuration; and sending a measurement update request to one or more of the plurality of network nodes based on the second indication.

[0228] Aspect 10 is the method according to Aspect 9, wherein the second indication is received based on a defined number or a defined fraction of the plurality of network nodes switching to the different antenna panel configuration.

[0229] Aspect 11 is the method according to any one of Aspects 1 to 8, wherein the network entity is a location server or an LMF, and the plurality of network nodes includes at least one base station, components of the at least one base station, at least one TRP, or a combination thereof.

[0230] Aspect 12 is the method according to any one of Aspects 1 to 9, wherein each antenna panel configuration in the set of antenna panel configurations is associated with a timer.

[0231] Aspect 13 is the method according to Aspect 12, wherein the timer varies with the corresponding energy saving mode.

[0232] Aspect 14 is the method according to Aspect 12, the method further comprising: if the timer associated with the antenna panel configuration of a network node among the plurality of network nodes expires, sending a request to the network node to report the updated antenna panel configuration.

[0233] Aspect 15 is the method according to any one of Aspects 1 to 14, the method further comprising: sending, in the UE positioning session, a second indication of a minimum number of antennas to be used to measure the UL-AoA of the UL-SRS set transmitted from the UE, wherein the indication is sent to the plurality of network nodes; and receiving, from a first set of network nodes among the plurality of network nodes, UL-AoA measurements of the UL-SRS set transmitted from the UE, wherein the first set of network nodes is capable of measuring the UL-AoA of the UL-SRS set transmitted from the UE using at least the minimum number of antennas.

[0234] Aspect 16 is the method according to aspect 15, wherein the minimum number of antennas includes at least one of the following: a first minimum number of antennas to be used for azimuth angle estimation, or a second minimum number of antennas to be used for elevation angle estimation.

[0235] Aspect 17 is the method according to aspect 15, the method further comprising: receiving a notification from a second set of network nodes among the plurality of network nodes, the notification indicating that the second set of network nodes cannot use at least the minimum number of antennas to measure the UL-AoA of the UL-SRS set transmitted from the UE.

[0236] Aspect 18 is the method according to aspect 17, wherein the second set of network nodes is configured to skip monitoring the UL-SRS set transmitted from the UE.

[0237] Aspect 19 is the method according to aspect 15, wherein a second indication of the minimum number of antennas to be used for measuring the UL-AoA is sent to the plurality of network nodes via a measurement request information message.

[0238] Aspect 20 is the method according to any one of aspects 1 to 19, the method further comprising: receiving a second indication indicating that at least one network node among the plurality of network nodes does not support measuring the UL-AoA of UL-SRS in at least one power saving mode in the set of power saving modes; and excluding the at least one network node among the plurality of network nodes from the UE positioning session if the at least one network node among the plurality of network nodes is in a power saving mode that does not support measuring the UL-AoA of UL-SRS.

[0239] Aspect 21 is an apparatus for wireless communication at a network entity, the apparatus comprising: a memory; and at least one processor coupled to the memory, and at least partially based on information stored in the memory, the at least one processor being configured to implement any one of aspects 1 to 20.

[0240] Aspect 22 is the apparatus according to aspect 21, the apparatus further comprising: at least one of a transceiver or an antenna coupled to the at least one processor.

[0241] Aspect 23 is an apparatus for wireless communication, the apparatus comprising: components for implementing any one of aspects 1 to 20.

[0242] Aspect 24 is a computer-readable medium (e.g., a non-transitory computer-readable medium) storing computer-executable code, wherein the code, when executed by a processor, causes the processor to implement any one of aspects 1 to 20.

[0243] Aspect 25 is a method for wireless communication at a network node, the method comprising: sending information indicating a set of antenna panel configurations for the network node or for a plurality of network nodes including the network node, wherein the set of antenna panel configurations is associated with a set of energy saving modes, and wherein the information is sent to a network entity; and receiving, in a UE positioning session, an indication of one or more UL-SRS transmission parameters for the UE based on the information indicating the set of antenna panel configurations for the plurality of network nodes.

[0244] Aspect 26 is the method according to aspect 25, wherein each antenna panel configuration in the set of antenna panel configurations comprises a first number of antennas to be used in UL azimuth measurement and a second number of antennas to be used in UL elevation measurement in one of the energy saving modes in the set of energy saving modes.

[0245] Aspect 27 is the method according to aspect 25 or aspect 26, wherein the indication is associated with a configuration for the UE to send a UL-SRS set to the plurality of network nodes based on the one or more UL-SRS transmission parameters.

[0246] Aspect 28 is the method according to any one of aspects 25 to 27, the method further comprising: configuring, in the UE positioning session, the one or more UL-SRS transmission parameters for the UE based on the information indicating the set of antenna panel configurations for the plurality of network nodes, wherein the indication is associated with the configuration for the UE to send the UL-SRS set to the plurality of network nodes based on the one or more UL-SRS transmission parameters.

[0247] Aspect 29 is the method according to aspect 25 or aspect 28, the method further comprising: configuring at least one TRP for a measurement set based on the information indicating the set of antenna panel configurations for the plurality of network nodes.

[0248] Aspect 30 is the method according to any one of aspects 25 to 29, wherein the set of antenna panel configurations is different between two energy saving modes in the set of energy saving modes.

[0249] Aspect 31 is the method according to any one of aspects 25 to 30, wherein the information further comprises a current antenna configuration used by the network node to receive the UL-SRS set from the UE or to measure the UL-AoA of the UL-SRS set.

[0250] Aspect 32 is the method according to any one of aspects 25 to 31, the method further comprising: sending a second indication that the network node is switching to a different antenna panel configuration; and receiving a measurement update request from the network entity based on the second indication.

[0251] Aspect 33 is the method according to aspect 32, wherein the second indication is sent based on a defined number of network nodes switching to different antenna panel configurations.

[0252] Aspect 34 is the method according to any one of aspects 25 to 33, wherein the network entity is a location server or an LMF, and the network node is a base station, a component of the base station, or a TRP.

[0253] Aspect 35 is the method according to any one of aspects 25 to 34, wherein each antenna panel configuration in the set of antenna panel configurations is associated with a timer.

[0254] Aspect 36 is the method according to aspect 35, wherein the timer varies with the corresponding energy saving mode.

[0255] Aspect 37 is the method according to aspect 35, the method further comprising: receiving a request to report an updated antenna panel configuration if the timer associated with the antenna panel configuration expires.

[0256] Aspect 38 is the method according to any one of aspects 25 to 37, the method further comprising: sending a second indication to the network entity indicating whether the energy saving mode associated with the network node or the antenna panel configuration of the network node supports UL-AoA measurement or does not support the UL-AoA measurement.

[0257] Aspect 39 is the method according to any one of aspects 25 to 38, the method further comprising: receiving, in the UE positioning session, a second indication of a minimum number of antennas to be used for measuring UL-AoA of UL-SRS transmitted from the UE, wherein the indication is received from the network entity; and sending, if the network node is capable of measuring the UL-AoA of the set of UL-SRS transmitted from the UE using at least the minimum number of antennas, a UL-AoA measurement of the set of UL-SRS transmitted from the UE to the network entity.

[0258] Aspect 40 is the method according to aspect 39, wherein the minimum number of antennas includes at least one of the following: a first minimum number of antennas to be used for azimuth estimation, or a second minimum number of antennas to be used for elevation estimation.

[0259] Aspect 41 is the method according to aspect 39, the method further comprising: sending a notification to the network entity, the notification indicating that the network node cannot use at least the minimum number of antennas to measure the UL-AoA of the UL-SRS set transmitted from the UE.

[0260] Aspect 42 is the method according to aspect 41, the method further comprising: skipping monitoring of the UL-SRS set transmitted from the UE.

[0261] Aspect 43 is a device for wireless communication at a network node, the device comprising: a memory; and at least one processor, the at least one processor being coupled to the memory and being configured to implement any one of aspects 25 to 42 at least in part based on information stored in the memory.

[0262] Aspect 44 is the device according to aspect 43, the device further comprising: at least one of a transceiver or an antenna coupled to the at least one processor.

[0263] Aspect 45 is a device for wireless communication, the device comprising: means for implementing any one of aspects 25 to 42.

[0264] Aspect 46 is a computer-readable medium (e.g., a non-transitory computer-readable medium) storing computer-executable code, wherein the code, when executed by a processor, causes the processor to implement any one of aspects 25 to 42.

Claims

1. An apparatus for wireless communication at a network entity, the apparatus comprises: a memory; and at least one processor coupled to the memory and configured to, at least in part based on second information stored in the memory: receive information indicating a set of antenna panel configurations for a plurality of network nodes, wherein the set of antenna panel configurations is associated with a set of power saving modes; and send an indication of one or more uplink (UL)-sounding reference signal (SRS) (UL-SRS) transmission parameters for a user equipment (UE) in a UE positioning session based on the information indicating the set of antenna panel configurations for the plurality of network nodes.

2. The apparatus according to claim 1, wherein each antenna panel configuration in the set of antenna panel configurations comprises a first number of antennas to be used in UL azimuth measurement and a second number of antennas to be used in UL elevation measurement in one of the power saving modes in the set of power saving modes.

3. The apparatus according to claim 1, wherein the indication is associated with a configuration for the UE to send a set of UL-SRSs to the plurality of network nodes based on the one or more UL-SRS transmission parameters.

4. The apparatus according to claim 1, wherein the set of antenna panel configurations for each network node in the plurality of network nodes is received from each corresponding network node.

5. The apparatus according to claim 1, wherein the plurality of network nodes comprises a serving network node of the UE and one or more non-serving network nodes, and the at least one processor is further configured to: receive the set of antenna panel configurations for the one or more non-serving network nodes via the serving network node.

6. The apparatus according to claim 1, wherein the at least one processor is further configured to: send the one or more UL-SRS transmission parameters to the UE via a serving network node of the UE.

7. The apparatus according to claim 1, wherein the information further comprises a current antenna configuration used by each network node in the plurality of network nodes to receive a set of UL-SRSs from the UE or to measure a UL angle of arrival (UL-AoA) of the set of UL-SRSs.

8. The apparatus according to claim 1, wherein the at least one processor is further configured to: receive a second indication that at least one network node in the plurality of network nodes is configured to switch to a different antenna panel configuration; and send a measurement update request to one or more network nodes in the plurality of network nodes based on the second indication.

9. The apparatus according to claim 8, wherein, in order to receive the second indication, the at least one processor is configured to receive the second indication based on a defined number of network nodes or a defined fraction of network nodes in the plurality of network nodes being configured to switch to the different antenna panel configuration.

10. The apparatus according to claim 1, wherein each antenna panel configuration in the set of antenna panel configurations is associated with a timer, and wherein the at least one processor is further configured to: if the timer associated with the antenna panel configuration of a network node among the plurality of network nodes is configured to expire, send a request to the network node to report an updated antenna panel configuration, wherein the timer varies with the corresponding energy saving mode.

11. The apparatus according to claim 1, wherein the at least one processor is further configured to: send a second indication of a minimum number of antennas for measurements of UL angle of arrival (UL-AoA) for a set of UL-SRSs from the UE in the UE positioning session, wherein, to send the indication, the at least one processor is configured to send the indication to the plurality of network nodes; and receive UL-AoA measurements for the set of UL-SRSs from the UE from a first set of network nodes among the plurality of network nodes, wherein the first set of network nodes is capable of performing the measurements of the UL-AoA for the set of UL-SRSs from the UE using at least the minimum number of antennas.

12. The apparatus according to claim 11, wherein the minimum number of antennas includes at least one of the following: a first minimum number of antennas to be used for azimuth estimation, or a second minimum number of antennas to be used for elevation estimation.

13. The apparatus according to claim 11, wherein the at least one processor is further configured to: receive a notification from a second set of network nodes among the plurality of network nodes, the notification indicating that the second set of network nodes cannot perform the measurements of the UL-AoA for the set of UL-SRSs from the UE using at least the minimum number of antennas, wherein the second set of network nodes is configured to skip monitoring the set of UL-SRSs from the UE.

14. The apparatus according to claim 11, wherein the second indication of the minimum number of antennas for the measurements of the UL-AoA is configured to be sent to the plurality of network nodes via a measurement request information message.

15. The apparatus according to claim 1, wherein the at least one processor is further configured to: receive a second indication indicating that at least one network node among the plurality of network nodes does not support measurements of UL angle of arrival (UL-AoA) for a set of UL-SRSs in at least one energy saving mode in the set of energy saving modes; and if the at least one network node among the plurality of network nodes is in an energy saving mode that does not support the measurements of the UL-AoA of the UL-SRSs, exclude the at least one network node among the plurality of network nodes from the UE positioning session.

16. A method for wireless communication at a network entity, the method comprises: Receive information indicating a set of antenna panel configurations for a plurality of network nodes, where the set of antenna panel configurations is associated with a set of energy saving modes; And Based on the information indicating the set of antenna panel configurations for the plurality of network nodes, send an indication of one or more uplink (UL)-sounding reference signal (SRS) (UL-SRS) transmission parameters for a user equipment (UE) in a UE positioning session.

17. An apparatus for wireless communication at a network node, the apparatus Comprises: A memory; And At least one processor coupled to the memory and at least partially based on second information stored in the memory, the at least one processor is configured to: Send information indicating a set of antenna panel configurations for the network node or for a plurality of network nodes including the network node, where the set of antenna panel configurations is associated with a set of energy saving modes, and where the information is sent to a network entity; And Based on the information indicating the set of antenna panel configurations for the plurality of network nodes, receive an indication of one or more uplink (UL)-sounding reference signal (SRS) (UL-SRS) transmission parameters for a UE in a UE positioning session.

18. The apparatus according to claim 17, wherein each antenna panel configuration in the set of antenna panel configurations includes a first number of antennas to be used in uplink (UL) azimuth measurement and a second number of antennas to be used in UL elevation measurement in one of the energy saving modes in the set of energy saving modes.

19. The apparatus according to claim 17, wherein the indication is associated with a configuration for the UE to send a set of UL-SRSs to the plurality of network nodes based on the one or more UL-SRS transmission parameters.

20. The apparatus according to claim 17, wherein the at least one processor is further configured to: Based on the information indicating the set of antenna panel configurations for the plurality of network nodes, configure the one or more UL-SRS transmission parameters for the UE in the UE positioning session, where the indication is associated with the configuration for the UE to send a set of UL-SRSs to the plurality of network nodes based on the one or more UL-SRS transmission parameters.

21. The apparatus according to claim 17, wherein the at least one processor is further configured to: Based on the information indicating the set of antenna panel configurations for the plurality of network nodes, configure at least one transmit receive point (TRP) for a set of measurements.

22. The apparatus according to claim 17, wherein the information further includes a current antenna configuration used by the network node to receive a set of UL-SRSs from the UE or to measure the UL angle of arrival (UL-AoA) of the set of UL-SRSs.

23. The apparatus according to claim 17, wherein the at least one processor is further configured to: Send a second indication that the network node is configured to switch to a different antenna panel configuration; and Receive a measurement update request from the network entity based on the second indication.

24. The apparatus according to claim 23, wherein, in order to send the second indication, the at least one processor is configured to: send the second indication based on a defined number of network nodes being configured to switch to a different antenna panel configuration.

25. The apparatus according to claim 17, wherein each antenna panel configuration in the set of antenna panel configurations is associated with a timer, and the at least one processor is further configured to: If the timer associated with the antenna panel configuration is configured to expire, receive a request to report an updated antenna panel configuration, wherein the timer varies with the corresponding energy saving mode.

26. The apparatus according to claim 17, wherein the at least one processor is further configured to: Send a second indication to the network entity indicating whether the energy saving mode associated with the network node or with the antenna panel configuration of the network node is configured to support UL-Angle of Arrival (UL-AoA) measurement or is not configured to support the UL-AoA measurement.

27. The apparatus according to claim 17, wherein the at least one processor is further configured to: Receive, in the UE positioning session, a second indication of a minimum number of antennas to be used for measuring the UL-Angle of Arrival (UL-AoA) of a UL-SRS set from the UE, wherein, in order to receive the indication, the at least one processor is configured to receive the indication from the network entity; and If the network node is able to use at least the minimum number of antennas to perform the UL-AoA measurement of the UL-SRS set from the UE, send a UL-AoA measurement of the UL-SRS set from the UE to the network entity.

28. The apparatus according to claim 27, wherein the minimum number of antennas includes at least one of the following: A first minimum number of antennas to be used for azimuth estimation, or A second minimum number of antennas to be used for elevation estimation.

29. The apparatus according to claim 27, wherein the at least one processor is further configured to: Send a notification to the network entity, the notification indicating that the network node is unable to use at least the minimum number of antennas to perform the UL-AoA measurement of the UL-SRS set from the UE; and Skip monitoring the UL-SRS set from the UE.

30. A method for wireless communication at a network node, the method comprises: Sending information indicating a set of antenna panel configurations for the network node or for a plurality of network nodes including the network node, wherein the set of antenna panel configurations is associated with a set of energy saving modes, and wherein the information is sent to a network entity; And Receiving an indication of one or more UL-sounding reference signal (UL-SRS) transmission parameters for a UE in a user equipment (UE) positioning session based on the information indicating the set of antenna panel configurations for the plurality of network nodes.

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