RRM measurement using LP-RS in RRC connected state

Abstract

A method of wireless communication at a UE includes communicating with a serving cell using a first receiver; and performing one or more measurements on the LP-RS in the RRC connected mode using a second receiver having lower power consumption than the first receiver. A method of wireless communication at a network node includes configuring an LP-RS configuration for a UE for one or more measurements in an RRC connected mode with a second receiver at the UE, wherein the second receiver at the UE has lower power consumption than a first receiver at the UE; and transmitting the LP-RS.

Description

[0001] CROSS-REFERENCE TO RELATED APPLICATIONS

[0002] This application claims the benefit and priority of International Application No. PCT / CN2022 / 121133, filed on September 24, 2022, entitled “Use of LP-RS for RRM Measurements in RRC Connected State”, which is expressly incorporated herein by reference in its entirety. Technical Field

[0003] The present disclosure relates generally to communication systems and, more particularly, to wireless communications including signal strength measurements. Background Art

[0004] Wireless communication systems are widely deployed to provide a variety of telecommunication services, such as telephony, video, data, messaging, and broadcast. Typical wireless communication systems may employ multiple access technologies 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 a city, country, region, and even global level. An example telecommunication standard is 5G New Radio (NR). 5G NR is part of the continuous mobile broadband evolution promulgated by the Third Generation Partnership Project (3GPP) to meet new requirements associated with latency, reliability, security, scalability (e.g., with the Internet of Things (IoT)) and other requirements. 5GNR 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 4G Long Term Evolution (LTE) standards. It is necessary to further improve 5G NR technology. 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 to provide a basic understanding of these aspects. This summary is not an extensive review of all contemplated aspects. This summary neither identifies the key or important 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 a more detailed description presented later.

[0007] In one aspect of the present disclosure, a method, computer readable medium, and apparatus for wireless communication at a user equipment (UE) are provided. The apparatus is configured to: communicate with a serving cell using a first receiver, and perform one or more measurements on a low power reference signal (LP-RS) in an RRC connected mode using a second receiver having lower power consumption than the first receiver.

[0008] In one aspect of the present disclosure, a method, a computer-readable medium, and an apparatus for wireless communication at a network node are provided. The apparatus is configured to: configure an LP-RS configuration for a UE for performing one or more measurements in an RRC connected mode using a second receiver at the UE, wherein the second receiver at the UE has lower power consumption than a first receiver at the UE; and transmit an LP-RS.

[0009] To achieve the aforementioned and related purposes, one or more aspects include the features fully described below and particularly pointed out in the claims. The following description and the accompanying drawings set forth in detail some exemplary features of one or more aspects. However, these features indicate only some of the various ways in which the principles of the various aspects can 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 subframe within a 5G NR frame structure.

[0012] Figure 2B is a diagram illustrating an example of DL channels within a 5G NR subframe.

[0013] Figure 2C is a diagram illustrating an example of a second subframe within a 5G NR frame structure.

[0014] Figure 2D is a diagram illustrating an example of UL channels within a 5G NR subframe.

[0015] Figure 3 is a block diagram of a base station in an access network communicating with a UE 350.

[0016] Figure 4 is a call flow diagram illustrating a UE (such as a UE in an RRC connected state) utilizing a first high power (HP) radio to communicate with at least a base station while utilizing a second low power (LP) radio to perform RS measurements on an LP-RS set in accordance with some aspects of the present disclosure.

[0017] Figure 5A is a diagram illustrating an example of a measurement gap between communication and measurement of a reference signal.

[0018] Figure 5B is a diagram illustrating an SSB set and a corresponding LP-RS set, and the positions of these LP-RSs in time and frequency can be identified based on the positions of the corresponding SSBs.

[0019] Figure 6 is a diagram illustrating a set of LP-RS resources that overlap in time with communication resources in accordance with some aspects of the present disclosure.

[0020] Figure 7 is a flow chart of a wireless communication method.

[0021] Figure 8 is a flow chart of a wireless communication method.

[0022] Fig. 9 is a flow chart of a wireless communication method.

[0023] Fig.10 is a flow chart of a wireless communication method.

[0024] Fig.11 is a diagram illustrating an example of a hardware implementation of an exemplary device.

[0025] Fig.12 is a diagram illustrating an example of a hardware implementation of a network entity. DETAILED DESCRIPTION

[0026] The UE may be equipped with a first or primary radio component and / or receiver (e.g., for communication and RS measurement) and a second low power radio component and / or receiver (e.g., which may be referred to as a low power wake-up radio component (LP-PAYI) or another name) that utilizes less power than the first receiver and / or radio component of the UE. In some aspects, the UE may use a second radio component and / or receiver (e.g., LP-LAN) to monitor or receive and measure LP-RS. The various aspects presented herein enable the UE to utilize the LP-LAN (e.g., as an example of a second low power radio component and / or receiver) in different contexts (e.g., for measurements in an RRC connected state) so as to reduce UE power consumption and allow RS measurements via the LP-LAN without interrupting communication via the first or primary receiver and / or radio component. Although the term LP-WUR may be used below for simplicity, the features and use of the LP-WUR will be understood to be generally applicable to a second low power radio component and / or receiver that utilizes less power than the primary radio component and / or receiver. The various aspects presented herein provide higher efficiency at the UE and help reduce power consumption and / or extend battery life at the UE.

[0027] Various aspects presented herein help reduce UE power consumption and provide enhancements to RS measurement procedures using LP-RS. In one example, the UE performs measurements (e.g., layer 3 reference signal received power (L3-RSRP) or layer 1 RSRP (L1-RSRP) measurements) on at least one LP-RS for one or more of radio resource management (RRM), radio link monitoring (RLM), beam failure detection (BFD), or random access channel (RACH) timing selection. At least one LP-RS may be associated with a serving cell and / or a neighboring cell. Thus, the UE may use the LP-RS for cell selection / reselection purposes without continuously measuring the SSB. Since measuring the LP-RS may consume less UE power than measuring the SSB, UE power consumption may be reduced. For example, the UE may obtain measurements of the LP-RS using a lower power radio component instead of a main radio component. According to some configurations presented herein, the UE may use the LP-RS for additional purposes.

[0028] The specific embodiments described below in conjunction with the accompanying drawings are descriptions of various configurations and do not represent the only configurations in which the concepts described herein can be practiced. In order to provide a thorough understanding of the various concepts, the specific embodiments include specific details. However, these concepts can be practiced without these specific details. In some cases, well-known structures and components are shown in block diagram form to avoid obscuring such concepts.

[0029] Several aspects of telecommunication systems 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"). These elements may be implemented using electronic hardware, computer software, or any combination thereof. Whether such elements are implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system.

[0030] As an example, an element, or any part of an element, or any combination of elements can be implemented as a "processing system", which includes one or more processors. When multiple processors are implemented, the multiple processors can perform functions individually or in combination. Examples of processors include microprocessors, microcontrollers, graphics processing units (GPUs), central processing units (CPUs), application processors, digital signal processors (DSPs), reduced instruction set computing (RISC) processors, systems on chip (SoCs), baseband processors, field programmable gate arrays (FPGAs), programmable logic devices (PLDs), state machines, gating logic, discrete hardware circuits, and other suitable hardware configured to perform various functionalities described throughout the present disclosure. One or more processors in a processing system can execute software. Whether referred to as software, firmware, middleware, microcode, hardware description language, or other terms, software should be broadly interpreted as meaning instructions, instruction sets, codes, code segments, program codes, programs, subroutines, software components, applications, software applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, functions, or any combination thereof.

[0031] Thus, in one or more example aspects, specific implementations and / or use cases, the described functionality may be implemented in hardware, software, or any combination thereof. If implemented in software, the functionality may be stored or encoded as one or more instructions or codes on a computer-readable medium. Computer-readable media include computer storage media. Storage media may be any available media that can be accessed by a computer. By way of example, such computer-readable media may 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 that can be used to store computer-executable code in the form of instructions or data structures that can be accessed by a computer.

[0032] Although various aspects, specific implementations and / or use cases are described in this application by the illustration of some examples, additional or different aspects, specific implementations and / or use cases may be generated in many different arrangements and scenarios. The various aspects, specific implementations and / or use cases described herein can be implemented across many different platform types, devices, systems, shapes, sizes and packaging arrangements. For example, various aspects, specific implementations and / or use cases can be generated via integrated chip specific implementations and other devices based on non-module components (e.g., end-user devices, vehicles, communication equipment, computing equipment, industrial equipment, retail / purchase equipment, medical equipment, devices that enable artificial intelligence (AI), etc.). Although some examples may or may not be specifically for use cases or applications, the described examples may have a wide range of applicability. Various aspects, specific implementations and / or use cases may be in the range from chip-level or modular components to non-modular, non-chip-level specific implementations, and further to the range of aggregated, distributed or original equipment manufacturer (OEM) devices or systems in conjunction with one or more technologies herein. In some actual settings, the equipment combined with the various 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 include 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 various techniques described herein can be practiced in a wide variety of devices of various sizes, shapes, and configurations, chip-level components, systems, distributed arrangements, aggregated or disaggregated components, end-user devices, etc.

[0033] 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, a network node, a network entity, a mobility element of a network, a radio access network (RAN) node, a core network node, a network element or network equipment (such as a base station (BS)) or one or more units (or one or more components) performing base station functions can be implemented in an aggregated or decomposed architecture. For example, a BS (such as a Node B (NB), an evolved NB (eNB), an NR BS, a 5G NB, an access point (AP), a transmit receive point (TRP) or a cell, etc.) can be implemented as an aggregated base station (also referred to as an independent BS or a monolithic BS) or a decomposed base station.

[0034] A converged base station may be configured to utilize a radio protocol stack physically or logically integrated within a single RAN node. A decomposed base station may be configured to utilize a protocol stack physically or logically distributed between two or more units, such as one or more central or centralized units (CUs), one or more distributed units (DUs), or one or more radio units (RUs). In some aspects, a CU may be implemented within a RAN node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually distributed in one or more other RAN nodes. A DU may be implemented to communicate with one or more RUs. Each of a CU, a DU, and a 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).

[0035] Base station operation or network design may take into account the aggregated nature of base station functionality. For example, a disaggregated base station may be used in an integrated access backhaul (IAB) network, an open radio access network (O-RAN (network configuration such as that initiated by the O-RAN Alliance)), or a virtualized radio access network (vRAN, also known as a cloud radio access network (C-RAN)). Decomposition 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. Various units of a disaggregated base station or disaggregated RAN architecture may be configured for wired or wireless communication with at least one other unit.

[0036] Figure 1 1 is a diagram 100 illustrating an example of a wireless communication system and an access network. The illustrated wireless communication system includes a disaggregated base station architecture. The disaggregated base station architecture may include one or more CUs 110 that may communicate directly with a core network 120 via a backhaul link, or indirectly with the core network 120 through one or more disaggregated 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 corresponding midhaul links, such as an F1 interface. The DU 130 may communicate with one or more RUs 140 via corresponding fronthaul links. The RU 140 may communicate with corresponding UEs 104 via one or more radio frequency (RF) access links. In some implementations, a UE 104 may be served simultaneously by multiple RUs 140.

[0037] Each of the units (i.e., CU 110, DU 130, RU 140, and near-RT RIC 125, non-RT RIC 115, and SMO framework 105) may include or be coupled to one or more interfaces configured to receive or send 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 interface of these units may be configured to communicate with one or more of the other units via a transmission medium. For example, these units may include a wired interface configured to receive signals or send 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) configured to receive and / or send signals to one or more of the other units via a wireless transmission medium.

[0038] 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 specific implementations, 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-RAN configuration, the CU-UP unit may communicate bidirectionally with the CU-CP unit 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.

[0039] 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 a radio link control (RLC) layer, a medium 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 in part 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.

[0040] The lower layer functionality may be implemented by one or more RUs 140. In some deployments, the RU 140 controlled by the DU 130 may correspond to a logical node that hosts 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, based at least in part on a functional split (such as a lower layer functional split). In such an architecture, the RU 140 may be implemented to handle over-the-air (OTA) communications with one or more UEs 104. In some implementations, real-time and non-real-time aspects of control and user plane communications with the RU 140 may be controlled by the corresponding DU 130. In some scenarios, this configuration may enable the implementation of the DU 130 and the CU 110 in a cloud-based RAN architecture (such as a vRAN architecture).

[0041] The SMO framework 105 may be configured to support RAN deployment and provisioning of non-virtualized network elements and virtualized network elements. For non-virtualized network elements, the SMO framework 105 may be configured to support the deployment of dedicated physical resources for RAN coverage requirements, which may be managed via an operation and maintenance interface (such as an O1 interface). For virtualized network elements, the SMO framework 105 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) 190) to perform network element lifecycle management (such as to instantiate virtualized network elements) via a cloud computing platform interface (such as an O2 interface). Such virtualized network elements may include, but are not limited to, CU 110, DU 130, RU 140, and near-RT RIC 125. In some specific implementations, the SMO framework 105 may communicate with hardware aspects of the 4G RAN (such as an open eNB (O-eNB) 111) via the O1 interface. In addition, in some specific implementations, the SMO framework 105 may communicate directly with one or more RUs 140 via the O1 interface. The SMO framework 105 may also include a non-RT RIC 115 configured to support the functionality of the SMO framework 105 .

[0042] The non-RT RIC 115 may be configured to include logic functions that enable non-real-time control and optimization of RAN elements and resources, artificial intelligence (AI) / machine learning (ML) (AI / ML) workflows including model training and updating, or policy-based guidance of applications / features in the near-RT RIC 125. The non-RT RIC 115 may be coupled to or communicate with the near-RT RIC 125 (such as via an A1 interface). The near-RT RIC 125 may be configured to include logic functions that enable near-real-time control and optimization of RAN elements and resources via data collection and actions through an interface (such as via an E2 interface) that connects one or more CUs 110, one or more DUs 130, or both, and the O-eNB with the near-RT RIC 125.

[0043] In some implementations, in order to generate an AI / ML model to be deployed in the near-RT RIC 125, the non-RT RIC 115 may receive parameters or external enrichment information from an external server. Such information may be utilized by the near-RT RIC 125 and may be received from a non-network data source or from a network function at the SMO framework 105 or the non-RT RIC 115. In some examples, the non-RT RIC 115 or the near-RT RIC 125 may be configured to tune RAN behavior or performance. For example, the non-RT RIC 115 may monitor long-term trends and patterns of performance and employ AI / ML models to perform corrective actions through the SMO framework 105 (such as via reconfiguration of O1) or via the creation of RAN management policies (such as A1 policies).

[0044] At least one of the CU 110, the DU 130, and the RU 140 may be referred to as a base station 102. Therefore, the base station 102 may include one or more of the CU 110, the DU 130, and the RU 140 (each component is indicated by a dotted line to indicate that each component may be included in the base station 102 or may not be included in the base station). The base station 102 provides an access point to the core network 120 for the UE 104. The base station 102 may include a macro cell (a high-power cellular base station) and / or a small cell (a low-power cellular base station). 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. A 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 uplink (UL) (also known as reverse link) transmission from UE 104 to RU 140 and / or downlink (DL) (also known as 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 be through one or more carriers. For each carrier allocated in a carrier aggregation of up to Yx MHz (x component carriers) for transmission in each direction, the base station 102 / UE 104 may use a spectrum with a bandwidth of up to Y MHz (e.g., 5MHz, 10MHz, 15MHz, 20MHz, 100MHz, 400MHz, etc.). These carriers may or may not be adjacent to each other. The allocation of carriers may be asymmetric for DL ​​and UL (e.g., more or fewer carriers may be allocated for DL ​​compared to 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 a primary cell (PCell) and the secondary component carrier may be referred to as a secondary cell (SCell).

[0045] Some UEs 104 may communicate with each other using a device-to-device (D2D) communication link 158. The D2D communication link 158 may use DL / UL wireless wide area network (WWAN) spectrum. The D2D communication link 158 may use one or more sidelink channels, such as a physical sidelink broadcast channel (PSBCH), a physical sidelink discovery channel (PSDCH), a physical sidelink shared channel (PSSCH), and a physical sidelink control channel (PSCCH). D2D communication may be performed via various wireless D2D communication systems, such as, for example, Bluetooth TM (Bluetooth is a trademark of the Bluetooth Special Interest Group (SIG)), Wi-Fi based on the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard TM (Wi-Fi is a trademark of the Wi-Fi Alliance), LTE or NR.

[0046] The wireless communication system may also include a Wi-Fi AP 150 that communicates with a UE 104 (also referred to as a Wi-Fi station (STA)) via a communication link 154, for example, in a 5 GHz unlicensed spectrum, etc. When communicating in an unlicensed spectrum, the UE 104 / AP 150 may perform a clear channel assessment (CCA) to determine whether a channel is available prior to communication.

[0047] The electromagnetic spectrum is typically subdivided into various categories, bands, channels, etc. based on frequency / wavelength. In 5G NR, two initial operating bands have been identified as frequency range designations FR1 (410 MHz-7.125 GHz) and FR2 (24.25 GHz-52.6 GHz). Although a portion of FR1 is greater than 6 GHz, FR1 is often referred to (interchangeably) as the "sub-6 GHz" band in various documents and articles. A similar naming issue sometimes occurs with respect to FR2, which is often (interchangeably) referred to as the "millimeter wave" band in documents and articles, although different from the extremely high frequency (EHF) band (30 GHz-300 GHz) identified as the "millimeter wave" band by the International Telecommunication Union (ITU).

[0048] 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 (7.125GHz-24.25GHz). The bands falling within FR3 can inherit FR1 characteristics and / or FR2 characteristics, so the features of FR1 and / or FR2 can be effectively extended to mid-band frequencies. In addition, higher frequency bands are currently being explored to extend 5G NR operations to more than 52.6GHz. For example, three higher operating bands have been identified as frequency range designations FR2-2 (52.6GHz-71GHz), FR4 (71GHz-114.25GHz) and FR5 (114.25GHz-300GHz). Each of these higher frequency bands falls within the EHF band.

[0049] In view of the above, unless otherwise specified, if the term "6 GHz or less" is used herein, it may broadly refer to frequencies that may be less than 6 GHz, may be within FR1, or may include mid-band frequencies. In addition, unless otherwise specified, if the term "millimeter wave" is used herein, it may broadly refer to frequencies that may include mid-band frequencies, may be within FR2, FR4, FR2-2, and / or FR5, or may be within the EHF band.

[0050] 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 send a beamformed signal 182 to the UE 104 in one or more transmit directions. The UE 104 may receive the beamformed signal from the base station 102 in one or more receive directions. The UE 104 may also send a beamformed signal 184 to the base station 102 in one or more transmit directions. The base station 102 may receive the beamformed signal from the UE 104 in one or more receive directions. The base station 102 / UE 104 may perform beam training to determine the best receive direction and transmit direction for each of the base station 102 / UE 104. The transmit direction and receive direction of the base station 102 may be the same or may not be the same. The transmit direction and receive direction of the UE 104 may be the same or may not be the same.

[0051] The base station 102 may include and / or be referred to as a gNB, a Node B, an eNB, an access point, a base transceiver station, a radio base station, a radio transceiver, a transceiver function, a basic service set (BSS), an extended service set (ESS), a TRP, a network node, a network entity, a 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 a RU, or as a decomposed base station including one or more of a CU, a DU, and / or a RU. A set of base stations that may include decomposed base stations and / or aggregated base stations may be referred to as a next generation (NG) RAN (NG-RAN).

[0052] 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. AMF 161 is a control node that handles signaling between UE 104 and the core network 120. AMF 161 supports registration management, connection management, mobility management, and other functions. SMF 162 supports session management and other functions. UPF 163 supports packet routing, packet forwarding, and other functions. 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, the one or more location servers 168 may include one or more location / positioning servers, which may include one or more of the GMLC 165, LMF 166, position determination entity (PDE), service mobile location center (SMLC), mobile positioning center (MPC), etc. GMLC 165 and LMF 166 support UE location services. GMLC 165 provides an interface for clients / applications (e.g., emergency services) to access UE positioning information. LMF 166 receives measurement and assistance information from NG-RAN and UE 104 via AMF 161 to calculate the location of UE 104. NG-RAN may determine the location of UE 104 using one or more positioning methods. Positioning UE 104 may involve signal measurements, position estimation, and optional speed calculation based on these measurements. Signal measurements may be performed by UE 104 and / or base station 102 serving UE 104. The measured signals may be based on a satellite positioning system (SPS) 170 (e.g., one or more of a global navigation satellite system (GNSS), a global positioning system (GPS), a non-terrestrial network (NTN), or other satellite positioning / positioning 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) positioning), and / or one or more of other systems / signals / sensors.

[0053] Examples of UE 104 include cellular phones, smart phones, session initiation protocol (SIP) phones, laptops, 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, electric meters, gas pumps, large or small kitchen appliances, healthcare equipment, implants, sensors / actuators, displays, or any other similarly functional devices. Some of the UEs 104 may be referred to as IoT devices (e.g., parking meters, gas pumps, toasters, vehicles, heart monitors, etc.). UE 104 may also be referred to as stations, mobile stations, subscriber stations, mobile units, subscriber units, wireless units, remote units, mobile devices, wireless devices, wireless communication devices, remote devices, mobile subscriber stations, access terminals, mobile terminals, wireless terminals, remote terminals, mobile phones, user agents, mobile clients, clients, or some other suitable terminology. In some scenarios, the term UE may also be applied to one or more supporting devices, such as in a device constellation arrangement. One or more of these devices may access the network collectively and / or individually.

[0054] Reference again Figure 1 In some aspects, the UE 104 may include an LP RRM component 198 configured to communicate with a serving cell using a first receiver and to perform one or more measurements on the LP-RS in an RRC connected mode using a second receiver having lower power consumption than the first receiver. In some aspects, the base station 102 includes an LP RRM signaling component 199 configured to configure an LP-RS configuration for the UE for performing one or more measurements in an RRC connected mode using a second receiver at the UE, wherein the second receiver at the UE has lower power consumption than the first receiver at the UE. Although the following description may focus on 5G NR, the concepts described herein may be applicable to other similar areas, such as LTE, LTE-A, CDMA, GSM, and other wireless technologies.

[0055] Figure 2A FIG200 is a diagram illustrating an example of a first subframe within a 5G NR frame structure. Figure 2B FIG230 is a diagram illustrating an example of DL channels within a 5G NR subframe. Figure 2C FIG250 is a diagram illustrating an example of a second subframe within a 5G NR frame structure. Figure 2DFIG280 is a diagram illustrating an example of UL channels within a 5G NR subframe. The 5G NR frame structure may be frequency division duplex (FDD), where for a particular set of subcarriers (carrier system bandwidth), subframes within that subcarrier set are dedicated to either DL or UL, or may be time division duplex (TDD), where for a particular set of subcarriers (carrier system bandwidth), subframes within that subcarrier set are dedicated to both DL and UL. Figure 2A , Figure 2C In the example provided, the 5G NR frame structure is assumed to be TDD, where subframe 4 is configured with slot format 28 (most of which are DL), where D is DL, U is UL, and F is flexible between DL / UL, and subframe 3 is configured with slot format 1 (all of which are UL). Although subframes 3 and 4 are shown as having slot formats 1 and 28, respectively, any particular subframe may be configured with any of the various available slot formats 0-61. Slot formats 0 and 1 are full DL and full UL, respectively. Other slot formats 2-61 include a mix of DL, UL and flexible symbols. The UE is configured with the slot format through the received slot format indicator (SFI) (dynamically configured through DL control information (DCI) or semi-statically / statically configured through radio resource control (RRC) signaling). Note that the following description also applies to the 5G NR frame structure as TDD.

[0056] FIG. 2A to FIG. 2D The frame structure is illustrated, and various aspects of the present disclosure may be applicable to other wireless communication technologies that may have different frame structures and / or different channels. A frame (10ms) may be divided into 10 equally sized subframes (1ms). Each subframe may include one or more time slots. A subframe may also include a microslot, which may include 7, 4, or 2 symbols. Each time slot may include 14 or 12 symbols, depending on whether the cyclic prefix (CP) is normal or extended. For a normal CP, each time slot may include 14 symbols, and for an extended CP, each time slot may include 12 symbols. The symbol on the DL may be a CP orthogonal frequency division multiplexing (OFDM) (CP-OFDM) symbol. The symbol on the UL may be a CP-OFDM symbol (for high throughput scenarios) or a discrete Fourier transform (DFT) extended OFDM (DFT-s-OFDM) symbol (for power-constrained scenarios; limited to single-stream transmission). The number of time slots within a subframe is based on the CP and parameter set. The numerology defines the subcarrier spacing (SCS) (see Table 1). The symbol length / duration is scalable with 1 / SCS.

[0057]

[0058] 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 timeslots / subframe. The subcarrier spacing can be equal to 2 μ *15kHz, where μ is parameter set 0 to 4. Therefore, the subcarrier spacing for parameter set μ=0 is 15kHz, and the subcarrier spacing for parameter set μ=4 is 240kHz. The symbol length / duration is inversely related to the subcarrier spacing. FIG. 2A to FIG. 2D An example is provided for a normal CP with 14 symbols per slot and a parameter set μ=2 with 4 slots per subframe. The slot duration is 0.25 ms, the subcarrier spacing is 60 kHz, and the symbol duration is about 16.67 μs. Within a frame set, there may be one or more different bandwidth parts (BWPs) that are frequency-division multiplexed (see Figure 2B ). Each BWP may have a specific parameter set and CP (normal or extended).

[0059] A resource grid may be used to represent the frame structure. Each slot includes a resource block (RB) (also referred to as a physical RB (PRB)) extending over 12 consecutive subcarriers. The resource grid is divided into a number of resource elements (REs). The number of bits carried by each RE depends on the modulation scheme.

[0060] like Figure 2A As illustrated, some of the REs carry reference (pilot) signals (RS) for the UE. The RS may include a demodulation RS (DM-RS) (indicated as R for one particular configuration, but other DM-RS configurations are possible) and a channel state information reference signal (CSI-RS) for channel estimation at the UE. The RS may also include a beam measurement RS (BRS), a beam refinement RS (BRRS), and a phase tracking RS (PT-RS).

[0061] Figure 2BExamples of various DL channels within a subframe of a frame are illustrated. A 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 RE groups (REGs), each REG including 12 consecutive REs in an OFDM symbol of an RB. A PDCCH within a 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., a common search space, a UE-specific search space) during a PDCCH monitoring opportunity on a CORESET, wherein 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. A primary synchronization signal (PSS) may be within symbol 2 of a particular subframe of a frame. The PSS is used by UE 104 to determine subframe / symbol timing and physical layer identification. A secondary synchronization signal (SSS) may be within symbol 4 of a particular subframe of a frame. The SSS is used by the UE to determine the physical layer cell identity group number and the radio frame timing. Based on the physical layer identity and the physical layer cell identity group number, the UE can determine the physical cell identifier (PCI). Based on the PCI, the UE can determine the location of the DM-RS. The physical broadcast channel (PBCH) carrying the master information block (MIB) can 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 system frame number (SFN) and the number of RBs in the system bandwidth. The physical downlink shared channel (PDSCH) carries user data, broadcast system information not sent over the PBCH (such as the system information block (SIB)), and paging messages.

[0062] like Figure 2C As illustrated, some of the REs carry DM-RS (indicated as R for a particular configuration, but other DM-RS configurations are possible) for channel estimation at the base station. The UE may send a DM-RS for a physical uplink control channel (PUCCH) and a DM-RS for a physical uplink shared channel (PUSCH). The PUSCH DM-RS may be sent in the first or first two symbols of the PUSCH. Depending on whether a short PUCCH or a long PUCCH is sent and depending on the specific PUCCH format used, the PUCCH DM-RS may be sent in different configurations. The UE may send a sounding reference signal (SRS). The SRS may be sent in the last symbol of a subframe. The SRS may have a comb structure, and the UE may send the SRS on one of the comb structures in the comb structure. The SRS may be used by the base station for channel quality estimation to achieve frequency-dependent scheduling of the UL.

[0063] Figure 2DExamples of various UL channels within a subframe of a frame are illustrated. The PUCCH may be located at a position as indicated in one configuration. The PUCCH carries uplink control information (UCI), such as scheduling requests, channel quality indicators (CQI), precoding matrix indicators (PMI), rank indicators (RI), and 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 may additionally be used to carry a buffer status report (BSR), a power headroom report (PHR), and / or UCI.

[0064] Figure 3 375. The Controller / Processor 375 is a block diagram of a base station 310 in an access network communicating with a UE 350. In the DL, Internet Protocol (IP) packets may 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 medium access control (MAC) layer. The controller / processor 375 provides RRC layer functionality associated with broadcasting 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), inter-radio access technology (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 transfer of upper layer packet data units (PDUs), error correction through ARQ, concatenation, segmentation and reassembly of RLC service data units (SDUs), re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with 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 through HARQ, priority handling, and logical channel prioritization.

[0065] The transmit (TX) processor 316 and 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) coding / 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 (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-order phase shift keying (M-PSK), M-order quadrature amplitude modulation (M-QAM)). The coded and modulated symbols may then be separated into parallel streams. Each stream may then be mapped to an OFDM subcarrier, multiplexed with a reference signal (e.g., pilot) in the time and / or frequency domain, and then combined together using an inverse fast Fourier transform (IFFT) to produce a physical channel carrying a time domain OFDM symbol stream. The OFDM stream is spatially pre-coded to generate multiple spatial streams. Channel estimates from a channel estimator 374 may be used to determine the coding and modulation schemes, as well as for spatial processing. Channel estimates may be derived from reference signals and / or channel state feedback sent by the UE 350. Each spatial stream may then be provided to a different antenna 320 via a separate transmitter 318Tx. Each transmitter 318Tx may modulate a radio frequency (RF) carrier for transmission using a corresponding spatial stream.

[0066] At the UE 350, each receiver 354Rx receives a signal through its corresponding antenna 352. Each receiver 354Rx recovers the information modulated onto the RF carrier and provides the information to a 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 stream destined for the UE 350. If multiple spatial streams are destined for the UE 350, they can be combined into a single OFDM symbol stream by the RX processor 356. The RX processor 356 then converts the OFDM symbol stream from the time domain to the frequency domain using a fast Fourier transform (FFT). 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 signal are recovered and demodulated by determining the most likely signal constellation point sent by the base station 310. These soft decisions can be based on channel estimates calculated by the channel estimator 358. The soft decisions are then decoded and deinterleaved to recover the data and control signals originally sent on the physical channel by base station 310. The data and control signals are then provided to controller / processor 359, which implements layer 3 and layer 2 functionality.

[0067] The controller / processor 359 may be associated with at least one memory 360 that stores program codes and data. The at least one memory 360 may be referred to as a computer-readable medium. In the UL, the controller / processor 359 provides demultiplexing between transport channels and logical channels, packet reassembly, decryption, header decompression, and control signal processing to recover IP packets. The controller / processor 359 is also responsible for error detection using ACK and / or NACK protocols to support HARQ operations.

[0068] Similar to the functionality described in conjunction with DL transmissions 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 delivery of upper layer PDUs, error correction through ARQ, concatenation, segmentation and reassembly of RLC SDUs, resegmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs onto TBs, demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through HARQ, priority handling, and logical channel prioritization.

[0069] Channel estimates derived by the channel estimator 358 based on a reference signal or feedback sent by the base station 310 may be used by the TX processor 368 to select the appropriate coding and modulation schemes and to facilitate spatial processing. The spatial streams generated by the TX processor 368 may be provided to different antennas 352 via separate transmitters 354Tx. Each transmitter 354Tx may modulate an RF carrier with a corresponding spatial stream for transmission.

[0070] UL transmissions are processed at the base station 310 in a manner similar to that described in conjunction with the receiver functionality at the UE 350. Each receiver 318Rx receives a signal through its respective antenna 320. Each receiver 318Rx recovers information modulated onto an RF carrier and provides the information to the RX processor 370.

[0071] The controller / processor 375 may be associated with at least one memory 376 that stores program codes and data. The at least one memory 376 may be referred to as a computer-readable medium. In the UL, the controller / processor 375 provides demultiplexing between transport channels and logical channels, packet reassembly, decryption, header decompression, control signal processing to recover IP packets. The controller / processor 375 is also responsible for error detection using ACK and / or NACK protocols to support HARQ operations.

[0072] At least one of the TX processor 368, the RX processor 356, and the controller / processor 359 may be configured to perform operations related to Figure 1 The LP RRM component 198 combines various aspects.

[0073] At least one of the TX processor 316, the RX processor 370, and the controller / processor 375 may be configured to perform operations related to Figure 1 The LP RRM signaling component 199 combines various aspects.

[0074] When the UE is in the RRC connected state, the UE may perform various measurements. For example, the UE may measure one or more reference signals (RS) received from a base station. In the RRC connected state, measurements (e.g., RS measurements) may consume UE power. In addition, the UE may use measurement gaps (e.g., time gaps between communications and measurements performed by the same receiver) to perform such measurements. For example, the UE may use a receiver to perform RRM (or other) measurements on a frequency different from the frequency of its serving cell that the UE uses for data communications. The UE may implement measurement gaps in data communications to measure RS sent by a base station, such as measurements of RS via a frequency different from the frequency used to send or receive data communications with a base station. Figure 5A An example diagram 550 is illustrated showing data communications 552 and 554 separated by a time gap (e.g., which may be referred to as a measurement gap) from a reference signal 556 measured by a UE, such as for RRM or other types of measurements. In some aspects, the measurement gap may be a time period during which the UE tunes its operating frequency from a frequency used for data communication to a frequency associated with RS measurement and performs one or more measurements on the reference signal (e.g., for inter-frequency RS measurement). During the measurement gap, the UE may interrupt its regular data Tx / Rx operation. To this end, implementing the measurement gap consumes time resources that could be used for communication and may reduce UE throughput.

[0075] In some configurations, the UE may be equipped with a second low-power radio and / or receiver (e.g., LP-WUR) that utilizes less power than the UE's first receiver and / or radio (e.g., which may be referred to as a primary receiver or primary radio). The LP-WUR may have a lower complexity than the primary radio. In some aspects, the LP-WUR may be separate from the primary radio and may include a set of components that use less power than the components included in the primary radio. In other aspects, the LP-WUR may include a subset of the components of the primary radio. In one example, the LP-WUR may utilize less than 1 mA. In some aspects, the LP-WUR may be configured to receive a low-power wake-up signal (LP-WUS) or LP-RS. The LP-WUS or LP-RS may use a simplified communication scheme compared to a WUS or RS received by a higher power radio / receiver. For example, the LP-WUS or LP-RS may utilize an on-off keying (OOK) modulation scheme. The OOK modulation scheme may limit the payload size of the LP-WUS.

[0076] In some aspects, the UE may use an LP-WUR that can use LP-RS for RS measurements. In some aspects, the LP-WUR may be used to perform inter-frequency RS measurements simultaneously with the primary radio, e.g., overlapping in time with communications or measurements on the primary radio. In some aspects, the primary radio or receiver is used to receive data communications. Figure 4 4 is a call flow diagram 400 illustrating a UE 404 (such as a UE in an RRC connected state) utilizing a first higher power (HP) radio component 403 to communicate with at least a base station 402 and utilizing a second low power (LP) radio component 405 to perform RS measurements on a LP-RS set in accordance with some aspects of the present disclosure. The term "HP" may be used to refer to a radio component having a power consumption higher than that of a "LP" receiver. In some aspects, the HP receiver may be referred to as a higher power radio component, a higher power receiver, a primary radio component, etc. At 407, the base station 402 may configure the UE to measure and / or report the LP-RS. The base station 402 may configure the UE to perform one or more measurements for the LP-RS (e.g., RSRP, reference signal received quality (RSRQ)), or signal to interference plus noise ratio (SINR) measurements for neighboring cells, serving cells, RRM, RLM, BFD, random access opportunity (RO) selection, inter-frequency measurements, etc.

[0077] In some aspects, the base station 402 may send a measurement object configuration 408 and the UE 404 may receive the measurement object configuration. The measurement object configuration 408 may include an indication of the LP-RS configuration configured at 407. In some aspects, the measurement object may be configured in an RRC IE, such as a measurement configuration IE (which may be referred to as a "measConfig IE" in some aspects). In some aspects, the measurement object may be used for a serving cell measurement object (e.g., which may be referred to as a "ServingCellMO IE"). The presence of a measurement object for the LP-RS of the target frequency may indicate to the UE to perform measurements on the LP-RS instead of the RS using a primary radio component (e.g., such as an SSB). For example, if the configuration for the LP-RS measurement object is not included in the RRC configuration, the UE may understand that the SSB is measured using the primary radio component. If the RRC configuration includes a measurement object for the LP-RS of the target frequency, the UE may instead use the LP radio component to measure the LP-RS for the target frequency. For example, the UE may ignore the measurement gap configured for the frequency, for example, and may use the LP radio component to perform measurements on the LP-RS without measurement gaps between communications using the primary radio.

[0078] The manner of configuring the LP-RS for serving cell measurement may depend on the BWP configuration of the UE. For example, if none of the BWPs configured for the UE include SSBs, the base station 402 may configure the LP-RS field in the ServingCellMO IE, for example, under the serving cell configuration (e.g., which may be referred to as a "ServingCellConfig IE"). In some aspects, the base station 402 may configure a BWP-specific serving cell measurement object (e.g., a "ServingCellMO IE") under a dedicated BWP (e.g., which may be referred to as a "BWP-DownlinkDedicated IE"). For example, in the BWP-specific ServingCellMO IE, the base station 402 may configure a new LP-RS field in the ServingCellMO IE. In some aspects, the LP-RS field in the configured measurement object may include time and frequency information (e.g., the time position of the LP-RS based on the SSB defined for the frequency, for example, the periodicity of the LP-RS and the time offset for the first transmission opportunity of the SSB after SFN=1). The LP-RS field may also indicate the frequency position of the LP-RS based on the offset to the target frequency. The measurement object may include a measurement offset for the UE to convert RSRP / RSRQ measurements on LP-RS to equivalent RSRP / RSRQ measurements if performed on an SSB configured on that frequency.

[0079] In some aspects, the LP-RS configuration may include an indication of the location of one or more LP-RS for measurement by the UE in time and / or frequency. In some aspects, the indication of the location may be relative to the (known) location in time and / or frequency of the SSB. In some aspects, the periodicity and time offset of the LP-RS may be configured for the UE for a specific transmission opportunity of the SSB (such as the first transmission opportunity of the SSB after SFN=1). For example, the frequency position of the LP-RS may be configured by an offset to a target frequency. Figure 5B 5 is a diagram illustrating a set of SSBs and a corresponding set of LP-RSs, the locations of which in time and frequency can be identified based on the locations of the corresponding SSBs. For example, a first SSB 502 can be used to identify the location in time and frequency of a corresponding LP-RS 504 based on the location of the first SSB 502 and (1) a time offset 506 indicating the time between the end of the first SSB 502 and the beginning of the LP-RS 504 and (2) a frequency offset 508 indicating the frequency gap between the highest frequency associated with the first SSB 502 and the lowest frequency associated with the LP-RS 504. In addition, the second SSB 512 can be used to identify the position in time and frequency of the corresponding LP-RS 514 based on the position of the second SSB 512 and (1) a time offset 516 indicating the time between the start of the second SSB 512 and the start of the LP-RS 514 and (2) a frequency offset 518 indicating the frequency gap between the lowest frequency associated with the second SSB 512 and the lowest frequency associated with the LP-RS 514.

[0080] In some aspects, the LP-RS configuration may include an indication of the location in time and / or frequency of one or more LP-RSs in a BWP that does not include an SSB (or other high power RS). For example, in some aspects, a BWP may be configured for a UE that does not include an SSB. As an example, a UE with reduced capability may be configured with an active BWP that does not include an SSB. In some aspects, for such an LP-RS, the measurement object configuration 408 may be a serving cell measurement object configuration or a BWP-specific measurement object configuration. In some aspects, the LP-RS configuration may include at least one of a time position of the LP-RS, a frequency position of the LP-RS, and a measurement offset of the LP-RS. In some aspects, the time position of the LP-RS may be indicated relative to an SSB of a particular frequency, the frequency position of the LP-RS may be indicated relative to a target frequency, and the measurement offset of the LP-RS may be indicated relative to an SSB measurement, for example, for a particular SSB or set of SSBs or for a particular frequency or set of frequencies.

[0081] In some aspects, the indication of the location of the LP-RS in time and / or frequency may indicate a location associated with one or more of a BWP or a secondary cell group (SCG). In some aspects, the BWP may be a dormant BWP and / or the SCG may be a deactivated SCG. The indication of the location in time and / or frequency in the dormant BWP and / or SCG may also instruct the UE to measure the LP-RS using the LP radio component 405, rather than using the HP radio component 403 to measure the corresponding SSB (or another high power RS ​​such as a CSI-RS).

[0082] In order to perform serving cell measurement, the UE may check whether the LP-RS field exists in a serving cell measurement object information element for an active BWP (e.g., which may be referred to as a "ServingCellMO IE") or a bandwidth part-specific serving cell measurement object (e.g., which may be referred to as a "BWP-specific ServingCellMO").

[0083] In either of these two cases, the UE may perform serving cell measurements using the configured LP-RS instead of the SSB. For example, the UE may perform measurements on the LP-RS using the LP-WUR. In some aspects, the measurement gap is not followed. If both the ServingCellMO IE and the BWP-specific ServingCellMO for the active BWP include the LP-RS field, one of the BWP-specific ServingCellMOs may override the LP-RS indication in the ServingCellMO IE. For example, if the LP-RS field is included in two measurement objects, the UE may use the LP-RS field from the BWP-specific serving cell measurement object and ignore the LP-RS field in the serving cell measurement object. If the LP-RS field is included in only one of the measurement objects in the measurement object, the UE may perform measurements using the indicated LP-RS field. If the LP-RS field is not included in any of the measurement objects in the measurement object, the UE may perform serving cell measurements using the SSB configured in the ServingCellMO IE (e.g., instead of the LP-RS).

[0084] In some aspects, the measurement object configuration 408 may include an offset for at least one threshold associated with one or more measurements of the LP-RS (e.g., RSRP, reference signal received quality (RSRQ), or signal to interference plus noise ratio (SINR)) relative to measurements of the RS (such as SSB or CSI-RS) using the primary radio component. The threshold may be used for RRM measurements, serving cell measurements, RLM, BFD, random access opportunity (RO) selection, etc. For example, the configured offset may be a semi-static offset between two types of measurements. In some aspects, the offset may be an offset used when comparing measurements made using the LP-RS via the LP radio component 405 with measurements made using other RS ​​(e.g., SSB or CSI-RS) via the HP radio component 403 or with thresholds defined for other RS. In some aspects, the offset may be used for RS (e.g., SSB or CSI-RS) in the same BWP as the LP-RS.

[0085] In some aspects, rather than receiving a configuration of an offset between measurements of LP-RS and RS using a primary radio, the UE may obtain, determine, or identify a measurement offset between LP-RS using the LP radio and RS using the primary radio. For example, the base station 402 may transmit and the UE 404 may receive a set of RS 410 including at least one LP-RS 410A and at least one additional RS 410N (e.g., a high power RS ​​such as SSB or CSI-RS). In some aspects, the measurements of the reference signal using the two radios may overlap in time or be simultaneous. In some aspects, the UE 404 may measure at least one LP-RS 410A and at least one additional RS 410N at 412. At 414, the UE 404 may determine an offset (e.g., an RSRP offset, an RSRQ offset, or an SINR offset) associated with the LP-RS 410A, and in some aspects, generally determine an offset associated with the LP-RS. For example, if measurement object configuration 408 does not include an offset, UE 404 may measure LP-RS 410A and RS 410N at 412 and determine an offset associated with the RS measurement at 414. In some aspects, the determination at 414 may be based on an indication included in measurement object configuration 408.

[0086] Based on the measurement object configuration 408, the base station 402 may transmit a transmission set 416 and the UE 404 may receive the transmission set. The additional (neighboring) base station 406 may transmit an LP-RS 418 and the UE 404 may receive the LP-RS. In some aspects, the transmission set 416 may include an LP-RS 416A and data 416N. In some aspects, the data 416N may be transmitted via a first set of time resources overlapping with a time resource for transmitting at least one of the LP-RS 416A and / or the LP-RS 418. In some aspects, the UE 404 may measure the LP-RS 416A and / or the LP-RS 418 using the LP radio component 403 at 420, and may receive the data using the primary radio component (e.g., the HP radio component 403). In some aspects, the communication with the primary radio component (e.g., the HP radio component 403) may overlap in time at least partially with the measurement of the LP-RS 416A via the LP radio component 405. For example, the UE 404 may measure the LP-RS 416A via the LP radio component 405 while receiving the data 416N via the HP radio component 403. In some aspects, measuring the LP-RS at 420 may include deriving an equivalent measurement of a corresponding measurement of a different RS (e.g., SSB or CSI-RS) using an offset received in the measurement object configuration 408 or determined at 414. Based on the LP-RS measured at 420, the UE 404 may perform one or more of RRM, RLM, BFD, or RACH timing selection at 422. Figure 6 6 is a diagram illustrating LP-RS resource sets that overlap in time with communication resources according to some aspects of the present disclosure. For example, a first data transmission resource set 612 may overlap in time (but not in frequency) with an LP-RS 614 in the same BWP as the first data transmission set (e.g., BWP 1 610) and / or an LP-RS 622 in a different BWP than the first data transmission set (e.g., BWP 2 620).

[0087] As described above, diagram 500 includes SSB 502, SSB 512, LP-RS 504, and LP-RS 514. The LP-RS may be configured such that a UE uses less power to receive the LP-RS than the SSB. The LP-RS may include a different waveform than the SSB and / or a different modulation than the SSB, and the waveform or modulation of the LP-RS may be received using lower power than the waveform / modulation of the SSB. In some aspects, the waveform and / or modulation of the LP-RS may be the same as the waveform or modulation used for the LP-WUS. Figure 5BAs illustrated, the LP-RS 504 may span fewer frequency resources than the SSB 502. For example, the base station may transmit the LP-RS 504 in a narrower frequency band for a longer period of time than the SSB 502. In some aspects, the LP-RS 504 may include a defined sequence transmitted by a serving cell. The defined sequence of the LP-RS 504 may be scrambled by the PCI, or the payload of the LP-RS may carry the PCI for cell identification.

[0088] Figure 5B The diagram 500 in FIG. 5 shows the location of the LP-RS 504 defined based on the time offset 506 and the frequency offset 508 for the synchronization raster. The synchronization raster defines the known location of the transmission location of the SSB. By using the synchronization raster, the UE knows the location of the SSB. Since the UE knows the time and frequency location of the SSB 502 through the synchronization raster, the UE can determine or know the time and frequency location of the LP-RS 504. Since RRM measurements are performed in idle mode DRX or extended DRX, the base station can use a longer periodicity than SSB to send LP-RS. For example, the UE may not need to measure the LP-RS at the same rate as the SSB, which is typically sent every 20ms. By using repetitions, the LP-RS 504 can have similar or the same coverage as the SSB 502. The base station can configure the number of repetitions of the LP-RS. In one aspect, the UE can determine the time and frequency location of the SSB 502 based on the synchronization raster. The UE can determine the location of the LP-RS 504 based on the time and frequency location of the SSB 502.

[0089] Various aspects presented herein provide a measurement process with power savings and increased efficiency in the use of time resources by using LP-RS. In the RRC connected state, data-related processes (e.g., transmission, reception, and PDCCH monitoring) may consume a lot of power of the UE. In some aspects, the power savings from the measurement process using LP-RS may be lower than the total power consumed by the data-related processes at the UE (e.g., transmission of data, reception of data, monitoring of control signaling associated with the data).

[0090] Various aspects provided herein enable the use of LP-RS in situations that can provide power saving benefits. For example, a UE can use LP-WUR to perform inter-frequency RRM measurements, which can help avoid the negative impact of measurement gaps on UE throughput, for example, by performing measurements without a measurement gap period, during which the UE tunes its operating frequency to a target frequency and performs measurements on reference signals on that frequency (e.g., inter-frequency measurements). Using an LP radio component to measure LP-RS avoids measurement gaps in which the UE interrupts its data Tx / Rx operations and reduces the impact of inter-frequency measurements on UE throughput. This can allow the UE to perform inter-frequency measurements while performing regular data transmissions, so that there is no throughput loss when the UE performs measurements using the LP radio component.

[0091] Figure 7 700 is a flow chart of a wireless communication method. The method may be performed by a UE (e.g., UE 104, UE 350, UE 404, device 1104). In one example, the method (including various configurations described below) may be performed by LP RRM component 198. The method may be associated with various advantages for the UE, such as reducing UE power consumption and increasing data throughput.

[0092] The UE may receive a measurement object configuration indicating an LP-RS configuration. In some aspects, the LP-RS configuration indicates a position of the LP-RS relative to the SSB in at least one of time or frequency. For example, referring to Figure 4 , the UE 404 may receive the measurement object configuration 408 and the base station 402 may send the measurement object configuration. As part of receiving the measurement object configuration 408, the UE may receive an LP-RS configuration for an offset of at least one threshold associated with one or more measurements of the LP-RS (e.g., RSRP, RSRQ, or SINR). In some aspects, the offset may be an offset used when comparing measurements made using the LP-RS via the second receiver with measurements made using other RSs (e.g., SBS or CSI-RS) via the first receiver or with thresholds defined for other RSs. In some aspects, the offset may be used for RSs (e.g., SSB or CSI-RS) in the same BWP as the LP-RS.

[0093] As part of receiving a measurement object configuration, the UE may receive an indication of the location of one or more LP-RSs in a BWP that does not include an SSB (or another higher power RS) in time and / or frequency. In some aspects, for such an LP-RS, the measurement object configuration may be a serving cell measurement object configuration or a BWP-specific measurement object configuration. In some aspects, the LP-RS configuration may include at least one of a time location of the LP-RS, a frequency location of the LP-RS, and a measurement offset for the LP-RS. In some aspects, the time location of the LP-RS may be indicated relative to an SSB of a particular frequency, the frequency location of the LP-RS may be indicated relative to a target frequency, and the measurement offset of the LP-RS may be indicated relative to SSB measurements, for example, for a particular SSB or set of SSBs or for a particular frequency or set of frequencies.

[0094] In some aspects, the indication of the location of the LP-RS in time and / or frequency may indicate a location associated with one or more of a BWP or SCG. In some aspects, the BWP may be a dormant BWP and / or the SCG may be a deactivated SCG. The indication of the location in time and / or frequency in the dormant BWP and / or SCG may also instruct the UE to measure the LP-RS using a second receiver having lower power consumption than the first receiver, rather than using the first receiver to measure the corresponding SSB (or another higher power RS ​​such as a CSI-RS).

[0095] The UE may determine an offset between the LP-RS measured at the second receiver and the corresponding reference signal measured at the first receiver. In some aspects, determining the offset may be performed periodically, for example, for each of the periodic RS set and the associated LP-RS. For example, the reference Figure 4 At 414, UE 404 may determine an offset associated with the LP-RS. In some aspects, determining the offset may be based on the UE determining an indication of the offset included in the measurement object configuration.

[0096] At 710, the UE may communicate with the serving cell using a first receiver. For example, 710 may be performed by Fig.11 The application processor 1106, the cellular baseband processor 1124, the transceiver 1122, the antenna 1180 and / or the LP RRM component 198 are executed. For example, referring to Figure 4 At 420, UE 404 may receive the transmitted data 416N.

[0097] At 712, the UE may perform one or more measurements on the LP-RS in the RRC connected mode using a second receiver having lower power consumption than the first receiver. For example, 712 may be performed by Fig.11The UE may be configured to perform one or more measurements on the LP-RS instead of the reference signal measured by the first receiver based on the presence of the LP-RS configuration in the measurement object configuration received at 702. In some aspects, the one or more measurements may include RRM measurements of the serving cell or one or more neighboring cells. In some aspects, the one or more measurements may include inter-frequency measurements.

[0098] In some aspects, one or more measurements may include serving cell measurements. In some aspects in which one or more measurements include serving cell measurements, the UE may be configured to receive an LP-RS configuration associated with a BWP that does not include an SSB. In some such aspects, the LP-RS may be included in at least one of a serving cell measurement object configuration or a BWP-specific measurement object configuration. In some aspects, the LP-RS configuration associated with a BWP that does not include an SSB may include at least one of the following: a time position of the LP-RS relative to an SSB of a specific frequency, a frequency position of the LP-RS relative to a target frequency, or a measurement offset of the LP-RS relative to an SSB measurement. In some aspects, the UE may be configured to perform one or more measurements on the LP-RS instead of the SSB at 712 based on the presence of the LP-RS configuration in the serving cell measurement object configuration or the BWP-specific measurement object configuration.

[0099] Figure 8 800 is a flow chart of a wireless communication method. The method may be performed by a UE (e.g., UE 104, UE 350, UE 404, device 1104). In one example, the method (including various configurations described below) may be performed by LP RRM component 198. The method may be associated with various advantages for the UE, such as reducing UE power consumption and increasing data throughput.

[0100] At 802, the UE may receive a measurement object configuration indicating a LP-RS configuration. For example, 802 may be performed by Fig.11 The LP-RS configuration may be performed by the application processor 1106, the cellular baseband processor 1124, the transceiver 1122, the antenna 1180, and / or the LP RRM component 198. In some aspects, the LP-RS configuration indicates the position of the LP-RS relative to the SSB in at least one of time or frequency. For example, referring to Figure 4 , the UE 404 may receive the measurement object configuration 408 and the base station 402 may send the measurement object configuration.

[0101] At 804, as part of receiving the measurement object configuration at 802, the UE may receive an LP-RS configuration of an offset (e.g., a threshold offset) associated with one or more measurements (e.g., RSRP, RSRQ, or SINR) of the LP-RS. For example, 804 may be performed by Fig.11 The method may be performed by the application processor 1106, the cellular baseband processor 1124, the transceiver 1122, the antenna 1180, and / or the LP RRM component 198. In some aspects, the offset may be an offset used when comparing measurements made using the LP-RS via the second receiver with measurements made using other RSs (e.g., SBS or CSI-RS) via the first receiver or with thresholds defined for other RSs. In some aspects, the offset may be used for RSs (e.g., SSB or CSI-RS) in the same BWP as the LP-RS.

[0102] At 806, as part of receiving the measurement object configuration at 802, the UE may receive an indication of the location of one or more LP-RS in time and / or frequency in a BWP that does not include an SSB (or another higher power RS). For example, 806 may be performed by Fig.11 The measurement object configuration may be performed by the application processor 1106, the cellular baseband processor 1124, the transceiver 1122, the antenna 1180 and / or the LP RRM component 198. In some aspects, for such an LP-RS, the measurement object configuration may be a serving cell measurement object configuration or a BWP specific measurement object configuration. In some aspects, the LP-RS configuration may include at least one of a time position of the LP-RS, a frequency position of the LP-RS, and a measurement offset of the LP-RS. In some aspects, the time position of the LP-RS may be indicated relative to an SSB of a specific frequency, the frequency position of the LP-RS may be indicated relative to a target frequency, and the measurement offset of the LP-RS may be indicated relative to an SSB measurement, for example, for a specific SSB or a set of SSBs or for a specific frequency or a set of frequencies.

[0103] In some aspects, the indication of the location of the LP-RS in time and / or frequency may indicate a location associated with one or more of a BWP or SCG. In some aspects, the BWP may be a dormant BWP and / or the SCG may be a deactivated SCG. The indication of the location in time and / or frequency in the dormant BWP and / or SCG may also instruct the UE to measure the LP-RS using a second receiver having lower power consumption than the first receiver, rather than using the first receiver to measure the corresponding SSB (or another higher power RS ​​such as a CSI-RS).

[0104] At 808, the UE may determine an offset between the LP-RS measured at the second receiver and the corresponding reference signal measured at the first receiver. For example, 808 may be performed by Fig.11 The application processor 1106, the cellular baseband processor 1124, and / or the LPRRM component 198 are executed. In some aspects, determining an offset may be performed at 808, for example, periodically for each of the periodic RS set and the associated LP-RS. For example, referring to Figure 4 At 414, the UE 404 may determine an offset associated with the LP-RS. In some aspects, determining the offset at 808 may be based on the UE determining an indication of an offset included in the measurement object configuration received at 802.

[0105] At 810, the UE may communicate with the serving cell using a first receiver. For example, 810 may be performed by Fig.11 The application processor 1106, the cellular baseband processor 1124, the transceiver 1122, the antenna 1180 and / or the LP RRM component 198 are executed. For example, referring to Figure 4 , UE 404 may receive data transmission (e.g., data 416N) at 420.

[0106] At 812, the UE may perform one or more measurements on the LP-RS in the RRC connected mode using a second receiver having lower power consumption than the first receiver. For example, 812 may be performed by Fig.11 The UE may be configured to perform one or more measurements on the LP-RS instead of the reference signal measured by the first receiver based on the presence of the LP-RS configuration in the measurement object configuration received at 802. In some aspects, the one or more measurements may include RRM measurements of the serving cell or one or more neighboring cells. In some aspects, the one or more measurements may include inter-frequency measurements.

[0107] In some aspects, the one or more measurements may include serving cell measurements. In some aspects in which the one or more measurements include serving cell measurements, the UE may be configured to receive, at 802, an LP-RS configuration associated with a BWP that does not include an SSB. In some such aspects, the LP-RS may be included in at least one of a serving cell measurement object configuration or a BWP-specific measurement object configuration. In some aspects, the LP-RS configuration associated with a BWP that does not include an SSB may include at least one of the following: a time position of the LP-RS relative to an SSB of a particular frequency, a frequency position of the LP-RS relative to a target frequency, or a measurement offset of the LP-RS relative to an SSB measurement. In some aspects, the UE may be configured to perform one or more measurements on the LP-RS instead of the SSB at 812 based on the presence of the LP-RS configuration in the serving cell measurement object configuration or the BWP-specific measurement object configuration.

[0108] Fig. 9 900 is a flow chart of a wireless communication method. The method may be performed by a network node (e.g., base station 102, base station 310, base station 402, network entity 1102). In one example, the method (including various configurations described below) may be performed by LP RRM signaling component 199. At 902, the network node may configure an LP-RS configuration for a UE for performing one or more measurements in an RRC connected mode using a second receiver at the UE, wherein the second receiver at the UE has lower power consumption than a first receiver at the UE. For example, 902 may be performed by Fig.12 The CU processor 1212, DU processor 1232, RU processor 1242 and / or LP RRM signaling component 199 of the embodiment of the present invention are executed. In some aspects, the one or more measurements may include RRM measurements of the serving cell or one or more neighboring cells. In some aspects, the one or more measurements may include inter-frequency measurements. In some aspects, the one or more measurements may include serving cell measurements. In some aspects, the LP-RS configuration configured at 902 may include at least one of the following: a time position of the LP-RS relative to an SSB of a particular frequency, a frequency position of the LP-RS relative to a target frequency, or a measurement offset of the LP-RS relative to an SSB measurement. For example, with reference to Figure 4 , the base station 402 may configure the LP-RS configuration at 407. The network node may send an indication of the LP-RS configuration configured at 902 to the UE. Figure 4 , the base station 402 may send a measurement object configuration 408 , which indicates the LP-RS configuration configured by the base station 402 at 407 .

[0109] Finally, at 906, the network node may send the LP-RS. For example, 906 may be performed by Fig.12 The CU processor 1212, the DU processor 1232, the RU processor 1242, the transceiver 1246, the antenna 1280 and / or the LP RRM signaling component 199 are executed. In some aspects, the LP-RS sent at 904 can be an LP-RS associated with the LP-RS configuration configured at 902. At 906, the LP-RS can be sent via the time and / or frequency resources indicated in the LP-RS configuration sent at 904 (and configured at 902). For example, the LP-RS can be sent via the time position of the LP-RS relative to the SSB of a specific frequency and / or via the frequency position of the LP-RS relative to the target frequency. In some aspects, the LP-RS may include an OOK modulation scheme or an OFDMA modulation scheme, which is one of the same modulation scheme as the SSB or a modulation different from the SSB. For example, referring to Figure 4 , base station 402 may send LP-RS 410A or 416A.

[0110] The base station may send a communication to the UE for reception using the first receiver. In some aspects, the communication overlaps in time with the LP-RS. The communication may be sent via a frequency different from the LP-RS so that the communication is received via the first receiver and the LP-RS is received via a second receiver having lower power consumption than the first receiver at the UE. For example, referring to Figure 4 , base station 402 can send data 416N.

[0111] Fig.10 1000 is a flow chart of a wireless communication method. The method may be performed by a network node (e.g., base station 102, base station 310, base station 402, network entity 1102). In one example, the method (including various configurations described below) may be performed by LP RRM signaling component 199. At 1002, the network node may configure an LP-RS configuration for a UE for performing one or more measurements in an RRC connected mode using a second receiver at the UE, wherein the second receiver at the UE has lower power consumption than a first receiver at the UE. For example, 1002 may be performed by Fig.12The CU processor 1212, DU processor 1232, RU processor 1242 and / or LP RRM signaling component 199 of the embodiment of the present invention are executed. In some aspects, the one or more measurements may include RRM measurements of the serving cell or one or more neighboring cells. In some aspects, the one or more measurements may include inter-frequency measurements. In some aspects, the one or more measurements may include serving cell measurements. In some aspects, the LP-RS configuration configured at 1002 may include at least one of the following: a time position of the LP-RS relative to an SSB of a particular frequency, a frequency position of the LP-RS relative to a target frequency, or a measurement offset of the LP-RS relative to an SSB measurement. For example, with reference to Figure 4 At 407 , the base station 402 may configure the LP-RS configuration.

[0112] At 1004, the network node may send an indication of the LP-RS configuration configured at 1002 to the UE. For example, 1004 may be performed by Fig.12 The CU processor 1212, the DU processor 1232, the RU processor 1242, the transceiver 1246, the antenna 1280 and / or the LP RRM signaling component 199 are executed. Figure 4 , the base station 402 may send a measurement object configuration 408 , which indicates the LP-RS configuration configured by the base station 402 at 407 .

[0113] At 1006, the network node may send the LP-RS. For example, 1006 may be performed by Fig.12 The CU processor 1212, the DU processor 1232, the RU processor 1242, the transceiver 1246, the antenna 1280 and / or the LP RRM signaling component 199 are executed. In some aspects, the LP-RS sent at 1004 can be an LP-RS associated with the LP-RS configuration configured at 1002. At 1006, the LP-RS can be sent via the time and / or frequency resources indicated in the LP-RS configuration sent at 1004 (and configured at 1002). For example, the LP-RS can be sent via the time position of the LP-RS relative to the SSB of a specific frequency and / or via the frequency position of the LP-RS relative to the target frequency. In some aspects, the LP-RS may include an OOK modulation scheme or an OFDMA modulation scheme, which is one of the same modulation scheme as the SSB or a modulation different from the SSB. For example, referring to Figure 4 , base station 402 may send LP-RS 410A or 416A.

[0114] Finally, at 1008, the base station may send a communication to the UE for reception using the first receiver. In some aspects, the communication overlaps with the LP-RS in time. For example, 1008 may be performed by Fig.12 The CU processor 1212, DU processor 1232, RU processor 1242, transceiver 1246, antenna 1280 and / or LP RRM signaling component 199 of the UE are executed. The communication can be sent via a frequency different from the LP-RS, so that the communication is received via a first receiver and the LP-RS is received via a second receiver having lower power consumption than the first receiver at the UE. For example, referring to Figure 4 , base station 402 can send data 416N.

[0115] Fig.11 1100 is a diagram illustrating an example of a hardware implementation for an apparatus 1104. The apparatus 1104 may be a UE, a component of a UE, or may implement UE functionality. In some aspects, the apparatus 1104 may include at least one cellular baseband processor 1124 (also referred to as a modem) coupled to one or more transceivers 1122 (e.g., a cellular RF transceiver). The cellular baseband processor 1124 may include at least one on-chip memory 1124'. In some aspects, the apparatus 1104 may also include one or more subscriber identity module (SIM) cards 1120 and at least one application processor 1106 coupled to a secure digital (SD) card 1108 and a screen 1110. The application processor 1106 may include an on-chip memory 1106'. In some aspects, the device 1104 may also include a Bluetooth module 1112, a WLAN module 1114, an SPS module 1116 (e.g., a GNSS module), one or more sensor modules 1118 (e.g., an atmospheric pressure sensor / altimeter; a motion sensor such as an inertial measurement unit (IMU), a gyroscope, and / or an accelerometer; light detection and ranging (LIDAR), radio-aided detection and ranging (RADAR), sound navigation and ranging (SONAR), a magnetometer, audio, and / or other technologies for positioning), an additional memory module 1126, a power source 1130, and / or a camera 1132. The Bluetooth module 1112, the WLAN module 1114, and the SPS module 1116 may include an on-chip transceiver (TRX) (or in some cases, only a receiver (RX)). The Bluetooth module 1112, the WLAN module 1114, and the SPS module 1116 may include their own dedicated antennas and / or communicate using one or more antennas 1180. The cellular baseband processor 1124 communicates with the UE 104 and / or with the RU associated with the network entity 1102 via one or more antennas 1180 through the transceivers 1121 and 1122. For example, as described in conjunction with Figure 4As described, the device may include a low-power transceiver 1121 that uses less power than the transceiver 1122. The cellular baseband processor 1124 and the application processor 1106 may each include a computer-readable medium / memory 1124', 1106', respectively. The additional memory module 1126 may also be considered a computer-readable medium / memory. Each computer-readable medium / memory 1124', 1106', 1126 may be non-transitory. The cellular baseband processor 1124 and the application processor 1106 are each responsible for general processing, including the execution of software stored on the computer-readable medium / memory. The software, when executed by the cellular baseband processor 1124 / application processor 1106, enables the cellular baseband processor 1124 / application processor 1106 to perform the various functions described above. The computer-readable medium / memory can also be used to store data manipulated by the cellular baseband processor 1124 / application processor 1106 when executing the software. The cellular baseband processor 1124 / application processor 1106 may be a component of the UE 350 and may include at least one memory 360 and / or at least one of the TX processor 368, the RX processor 356, and the controller / processor 359. In one configuration, the device 1104 may be at least one processor chip (modem and / or application) and only include the cellular baseband processor 1124 and / or the application processor 1106, while in another configuration, the device 1104 may be the entire UE (e.g., see Figure 3 UE 350) and includes additional modules of device 1104.

[0116] As discussed above, the LP RRM component 198 is configured to communicate with the serving cell using a first receiver and perform one or more measurements on the LP-RS in the RRC connected mode using a second receiver having lower power consumption than the first receiver. The LP RRM component 198 may be further configured to perform a combined Figure 7 and Figure 8 Described and / or by Figure 4Any of the aspects performed by the UE in the . LP RRM component 198 may be within the cellular baseband processor 1124, the application processor 1106, or within both the cellular baseband processor 1124 and the application processor 1106. The LP RRM component 198 may be one or more hardware components that are specifically configured to perform the stated process / algorithm, implemented by one or more processors configured to perform the stated process / algorithm, stored in a computer-readable medium for implementation by one or more processors, or some combination thereof. When multiple processors are implemented, the multiple processors may perform the stated process / algorithm individually or in combination. As shown, the device 1104 may include multiple components configured for various functions. In one configuration, the device 1104 (and specifically the cellular baseband processor 1124 and / or the application processor 1106) includes a component for communicating with a serving cell using a first receiver, and a component for performing one or more measurements on the LP-RS in an RRC connected mode using a second receiver having lower power consumption than the first receiver. The device 1104 (and specifically the cellular baseband processor 1124 and / or the application processor 1106) may also include a component for receiving a configuration for an offset of at least one threshold associated with one or more measurements of the LP-RS. The device 1104 (and specifically the cellular baseband processor 1124 and / or the application processor 1106) may also include a component for determining an offset between the LP-RS measured at the second receiver and the corresponding reference signal measured at the first receiver. The device 1104 (and specifically the cellular baseband processor 1124 and / or the application processor 1106) may also include a component for receiving a measurement object configuration indicating an LP-RS configuration. The device 1104 (and specifically the cellular baseband processor 1124 and / or the application processor 1106) may also include a component for receiving an LP-RS configuration associated with a BWP that does not include an SSB. The device 1104 may also include a component for performing a combination Figure 7 and Figure 8 Described and / or by Figure 4 1104. The components may be the LP RRM component 198 of the apparatus 1104 configured to perform the functions recited by the components. As described above, the apparatus 1104 may include a TX processor 368, an RX processor 356, and a controller / processor 359. Thus, in one configuration, the components may be the TX processor 368, the RX processor 356, and / or the controller / processor 359 configured to perform the functions recited by the components.

[0117] Fig.121200 is a diagram illustrating an example of a hardware implementation for a network entity 1202. The network entity 1202 may be a BS, a component of a BS, or may implement BS functionality. The network entity 1202 may include at least one of a CU 1210, a DU 1230, or a RU 1240. For example, depending on the layer functionality handled by the LP RRM signaling component 199, the network entity 1202 may include a CU 1210; both a CU 1210 and a DU 1230; each of the CU 1210, the DU 1230, and the RU 1240; the DU 1230; both a DU 1230 and a RU 1240; or a RU 1240. The CU 1210 may include at least one CU processor 1212. The CU processor 1212 may include an on-chip memory 1212'. In some aspects, the CU 1210 may also include an additional memory module 1214 and a communication interface 1218. CU 1210 communicates with DU 1230 via a midhaul link, such as an F1 interface. DU 1230 may include at least one DU processor 1232. DU processor 1232 may include on-chip memory 1232'. In some aspects, DU 1230 may also include additional memory modules 1234 and communication interfaces 1238. DU 1230 communicates with RU 1240 via a fronthaul link. RU 1240 may include at least one RU processor 1242. RU processor 1242 may include on-chip memory 1242'. In some aspects, RU 1240 may also include additional memory modules 1244, one or more transceivers 1246, one or more antennas 1280, and a communication interface 1248. RU 1240 communicates with UE 104. On-chip memory 1212', 1232', 1242' and additional memory modules 1214, 1234, 1244 can each be considered a computer-readable medium / memory. Each computer-readable medium / memory can be non-transitory. Each of the processors 1212, 1232, 1242 is responsible for general processing, including executing software stored on the computer-readable medium / memory. The software, when executed by the corresponding processor, enables the processor to perform the various functions described above. The computer-readable medium / memory can also be used to store data manipulated by the processor when executing the software.

[0118] As discussed above, the LP RRM signaling component 199 is configured to configure an LP-RS configuration for the UE for performing one or more measurements in the RRC connected mode using a second receiver at the UE, wherein the second receiver at the UE has lower power consumption than the first receiver at the UE. The LP RRM signaling component 199 may be further configured to perform a combined Fig. 9 and Fig.10 Described and / or by Figure 4Any of the aspects performed by the base station in . The LP RRM signaling component 199 may be within one or more processors of one or more of the CU 1210, the DU 1230, and the RU 1240. The LP RRM signaling component 199 may be one or more hardware components that are specifically configured to perform the stated process / algorithm, implemented by one or more processors configured to perform the stated process / algorithm, stored in a computer-readable medium for implementation by one or more processors, or some combination thereof. When multiple processors are implemented, the multiple processors may perform the stated process / algorithm individually or in combination. The network entity 1202 may include a variety of components configured for various functions. In one configuration, the network entity 1202 includes: a component for configuring an LP-RS configuration for a UE for performing one or more measurements in an RRC connected mode using a second receiver at the UE, wherein the second receiver at the UE has lower power consumption than the first receiver at the UE; and a component for sending the LP-RS. In some aspects, the network entity 1202 may also include means for sending a communication to the UE for reception by the first receiver, the communication overlapping in time with the LP-RS. The network entity may also include means for performing the combined Fig. 9 and Fig.10 Aspects described and / or Figure 4 1202. The components may be the LP RRM signaling component 199 of the network entity 1202 configured to perform the functions recited by the components. As described above, the network entity 1202 may include the TX processor 316, the RX processor 370, and the controller / processor 375. Thus, in one configuration, the components may be the TX processor 316, the RX processor 370, and / or the controller / processor 375 configured to perform the functions recited by the components.

[0119] In the RRC connected state, RS measurements may consume UE power and may result in measurement gaps (e.g., if communication and measurements are performed by the same receiver). For example, if the UE cannot perform RRM (or other) measurements using the primary receiver at the same time as data communication on a frequency different from its serving cell frequency, it may implement measurement gaps to measure RS sent via a frequency different from the frequency used for data communication. In some aspects, a measurement gap may be a time period during which the UE tunes its operating frequency to a frequency associated with RS measurements and performs one or more measurements on reference signals (e.g., for inter-frequency RS measurements). During the measurement gap, the UE may interrupt its regular data Tx / Rx operations. To this end, implementing measurement gaps may be expensive and have a negative impact on UE throughput.

[0120] In some configurations, the UE may be equipped with a second low power radio and / or receiver (e.g., LP-WUR) that utilizes less power than the UE's primary (first) receiver and / or radio. In one example, the LP-WUR may utilize less than 1 mA. In some aspects, the LP-WUR may be configured to receive a low power wake-up signal (LP-WUS) or LP-RS. In some aspects, the UE may use an LP-WUR that is capable of using LP-RS for RS measurements. The LP-WUR may be used to perform inter-frequency RS measurements while the primary radio and / or receiver is used to receive data communications. The use of the LP-WUR may increase data throughput (e.g., by eliminating measurement gaps) and may reduce power consumption associated with the measurements.

[0121] It should be understood that the specific order or hierarchy of the blocks in the disclosed process / flowchart is merely an illustration of the exemplary method. It should be understood that the specific order or hierarchy of the blocks in the process / flowchart may be rearranged based on design preferences. Further, some blocks may be combined or omitted. The attached method claims provide the elements of the various blocks in a sample order, but are not limited to the specific order or hierarchy provided.

[0122] 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 apparent to those skilled in the art, and the general principles defined herein can be applied to other aspects. Therefore, the claims are not limited to the various aspects described herein, but should be given the full scope consistent with the language claims. Unless otherwise specified, reference to an element in the singular form does not mean "one and only one", but "one or more". Terms such as "if", "when" and "while" do not mean 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 conditions are met, the action will occur, but no specific or immediate time limit is required for the occurrence of the action. The word "exemplary" is used herein to mean "used as an example, instance, or illustration". Any aspect described as "exemplary" herein is not necessarily interpreted as being preferred or having advantages over other aspects. Unless otherwise specified, 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 "A, B, C, or any combination thereof" include any combination of A, B, and / or C, which may include multiple A, multiple B, or multiple C. 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 "A, B, C, or any combination thereof" may 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 interpreted as a set 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 the first device receives data from the second device or sends data to the second device, data may be directly received / sent between the first device and the second device, or indirectly received / sent between the first device and the second device through a collection of devices. All structural and functional equivalents of the elements of the various aspects described throughout the present disclosure that are known or will be known later to a person of ordinary skill in the art are expressly incorporated herein by reference and are covered by the claims. In addition, nothing disclosed herein is intended to be dedicated to the public, regardless of whether such disclosure is explicitly stated in the claims. Words such as "module", "mechanism", "element", "device" cannot replace the word "component". Therefore, no claim element will be understood as a component plus function unless the element is explicitly stated using the phrase "component for..."

[0123] As used herein, the phrase "based on" should not be interpreted as referring to 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 interpreted as "based at least on A" unless specifically stated differently.

[0124] The following aspects are merely illustrative and may be combined with other aspects or teachings described herein without limitation.

[0125] Aspect 1 is a method of wireless communication at a UE, the method comprising: communicating with a serving cell using a first receiver; and performing one or more measurements on an LP-RS in an RRC connected mode using a second receiver having lower power consumption than the first receiver.

[0126] Aspect 2 is a method according to aspect 1, the method further comprising: receiving a configuration of an offset for at least one threshold associated with the one or more measurements of the LP-RS.

[0127] Aspect 3 is a method according to aspect 1, the method further comprising determining an offset between the LP-RS measured at the second receiver and a corresponding reference signal measured at the first receiver.

[0128] Aspect 4 is a method according to aspect 3, wherein the corresponding reference signal includes an SSB configured in the same BWP as the LP-RS.

[0129] Aspect 5 is a method according to any one of aspects 1 to 4, wherein the communication with the first receiver overlaps in time with the one or more measurements with the second receiver.

[0130] Aspect 6 is a method according to any one of aspects 1 to 5, wherein the one or more measurements include RRM measurements of a serving cell or one or more neighboring cells.

[0131] Aspect 7 is a method according to aspect 6, wherein the one or more measurements include inter-frequency measurements.

[0132] Aspect 8 is a method according to any one of aspects 1 to 7, the method further comprising receiving a measurement object configuration indicating an LP-RS configuration.

[0133] Aspect 9 is a method according to aspect 8, wherein the LP-RS configuration indicates a position of the LP-RS relative to the SSB in at least one of time or frequency.

[0134] Aspect 10 is a method according to any one of aspects 8 and 9, the method further comprising: based on the presence of the LP-RS configuration in the measurement object configuration, performing the one or more measurements on the LP-RS instead of the reference signal measured using the first receiver.

[0135] Aspect 11 is a method according to any one of aspects 1 to 10, wherein the one or more measurements include serving cell measurements.

[0136] Aspect 12 is a method according to aspect 11, the method further comprising receiving an LP-RS configuration associated with a BWP that does not include an SSB, the LP-RS being included in at least one of a serving cell measurement object configuration or a BWP-specific measurement object configuration.

[0137] Aspect 13 is a method according to Aspect 12, wherein the LP-RS configuration includes at least one of the following items: the time position of the LP-RS relative to the SSB of a specific frequency, the frequency position of the LP-RS relative to the target frequency, or the measurement offset of the LP-RS relative to the SSB measurement.

[0138] Aspect 14 is a method according to any one of Aspects 12 or 13, the method further comprising: performing the one or more measurements on the LP-RS instead of the SSB based on the presence of the LP-RS configuration in the serving cell measurement object configuration or the BWP specific measurement object configuration.

[0139] Aspect 15 is a method for performing wireless communications at a network node, the method comprising: configuring an LP-RS configuration for a UE for performing one or more measurements in an RRC connected mode using a second receiver at the UE, wherein the second receiver at the UE has lower power consumption than a first receiver at the UE; and sending the LP-RS.

[0140] Aspect 16 is a method according to aspect 15, the method further comprising: sending communications to the UE for reception using the first receiver, the communications overlapping in time with the LP-RS.

[0141] Aspect 17 is a method according to any one of aspects 15 and 16, wherein the one or more measurements include RRM measurements of a serving cell or one or more neighboring cells.

[0142] Aspect 18 is a method according to any one of aspects 15 to 17, wherein the one or more measurements include inter-frequency measurements.

[0143] Aspect 19 is a method according to any one of aspects 15 to 18, wherein the one or more measurements include serving cell measurements.

[0144] Aspect 20 is a method according to any one of aspects 15 to 19, wherein the LP-RS configuration is associated with a BWP that does not include an SSB, and the LP-RS is included in at least one of a serving cell measurement object configuration or a BWP-specific measurement object configuration.

[0145] Aspect 21 is a method according to aspects 15 to 20, wherein the LP-RS configuration includes at least one of the following items: the time position of the LP-RS relative to the SSB of a specific frequency, the frequency position of the LP-RS relative to the target frequency, or the measurement offset of the LP-RS relative to the SSB measurement.

[0146] Aspect 22 is an apparatus for wireless communication at a user equipment (UE), the apparatus comprising at least one memory and at least one processor, the at least one processor being coupled to the at least one memory and configured to perform a method according to any one of aspects 1 to 14.

[0147] Aspect 23 is an apparatus for wireless communication at a user equipment (UE), the apparatus comprising at least one memory and at least one processor, the at least one processor being coupled to the at least one memory and being configured, alone or in any combination, to cause the UE to perform a method according to any one of Aspects 1 to 14 based at least in part on information stored in the at least one memory.

[0148] Aspect 24 is an apparatus for wireless communication at a user equipment (UE), the apparatus comprising one or more memories and one or more processors, the one or more processors being coupled to the one or more memories and being configured, individually or in any combination, to cause the UE to perform a method according to any one of Aspects 1 to 14 based at least in part on information stored in the at least one or more memories.

[0149] Aspect 25 is an apparatus for wireless communication, the apparatus comprising means for performing the method according to any one of aspects 1 to 14.

[0150] Aspect 26 is an apparatus according to any one of aspects 22 to 25, the apparatus further comprising a first receiver and a second receiver, wherein the second receiver operates using less power than the first receiver.

[0151] Aspect 27 is an apparatus according to any one of aspects 22 to 25, the apparatus further comprising a transceiver coupled to the at least one processor.

[0152] Aspect 28 is a non-transitory computer-readable medium comprising instructions which, when executed by an apparatus, cause the apparatus to perform the method according to any one of aspects 1 to 14.

[0153] Aspect 29 is an apparatus for wireless communication at a network node, the apparatus comprising a memory and at least one processor, the at least one processor being coupled to the memory and configured to perform the method according to any one of aspects 15 to 21.

[0154] Aspect 30 is an apparatus for wireless communication at a network node, the apparatus comprising at least one memory and at least one processor, the at least one processor being coupled to the at least one memory and being configured, alone or in any combination, to cause the network node to perform a method according to any one of Aspects 15 to 21 based at least in part on information stored in the at least one memory.

[0155] Aspect 31 is an apparatus for performing wireless communications at a network node, the apparatus comprising one or more memories and one or more processors, the one or more processors being coupled to the one or more memories and being configured, individually or in any combination, to cause the network node to perform a method according to any one of Aspects 15 to 21 based at least in part on information stored in the at least one or more memories.

[0156] Aspect 32 is an apparatus for wireless communication, the apparatus comprising means for performing a method according to any one of aspects 15 to 21.

[0157] Aspect 33 is a non-transitory computer-readable medium comprising instructions which, when executed by an apparatus, cause the apparatus to perform the method according to any one of aspects 15 to 21.

[0158] Aspect 34 is an apparatus according to any one of aspects 29 to 31, the apparatus also comprising at least one transceiver, the at least one transceiver coupled to the at least one processor and configured to send communications to the UE for receipt using the first receiver.

Claims

1. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising: at least one memory; and at least one processor, the at least one processor being coupled to the at least one memory and, based at least in part on the stored information stored in the at least one memory, the at least one processor being configured, alone or in any combination, to cause the UE to: communicating with a serving cell using a first receiver; as well as One or more measurements are performed on a low power reference signal (LP-RS) in an RRC connected mode using a second receiver having lower power consumption than the first receiver.

2. The apparatus of claim 1, wherein the one or more measurements comprise radio resource management (RRM) measurements of the serving cell or one or more neighboring cells.

3. The apparatus of claim 2, wherein the one or more measurements comprise inter-frequency measurements.

4. The apparatus of claim 1 , wherein the at least one processor is further configured to cause the UE to: A configuration of an offset for at least one threshold associated with the one or more measurements of the LP-RS is received.

5. The apparatus of claim 1 , wherein the at least one processor is further configured to cause the UE to: An offset between the LP-RS measured at the second receiver and a corresponding reference signal measured at the first receiver is determined.

6. The apparatus of claim 5, wherein the corresponding reference signal comprises a synchronization signal block (SSB) configured in the same bandwidth part (BWP) as the LP-RS.

7. The apparatus of claim 1, wherein communication with the first receiver overlaps in time with the one or more measurements with the second receiver.

8. The apparatus of claim 1, wherein the at least one processor is configured to cause the UE to: A measurement object configuration indicating an LP-RS configuration is received.

9. The apparatus of claim 8, wherein the LP-RS configuration indicates a position of the LP-RS relative to a synchronization signal block (SSB) in at least one of time or frequency.

10. The apparatus of claim 8, wherein the at least one processor is configured to cause the UE to perform the one or more measurements on the LP-RS instead of the reference signal measured by the first receiver based on the presence of the LP-RS configuration in the measurement object configuration.

11. The apparatus of claim 1, wherein the one or more measurements comprise serving cell measurements.

12. The apparatus of claim 11, wherein the at least one processor is configured to cause the UE to: An LP-RS configuration associated with a bandwidth part (BWP) not including a synchronization signal block (SSB) is received, the LP-RS being included in at least one of a serving cell measurement object configuration or a BWP-specific measurement object configuration.

13. The apparatus of claim 12, wherein the LP-RS configuration comprises at least one of: a time position of the LP-RS relative to the SSB of a specific frequency, The frequency position of the LP-RS relative to the target frequency, or The LP-RS measurement offset relative to the SSB measurement.

14. The apparatus of claim 12, wherein the at least one processor is configured to cause the UE to perform the one or more measurements on the LP-RS instead of the SSB based on the presence of the LP-RS configuration in the serving cell measurement object configuration or the BWP specific measurement object configuration.

15. The apparatus according to claim 1, further comprising: The first receiver is coupled to the at least one processor. and The second receiver is coupled to the at least one processor.

16. A method of wireless communication at a user equipment (UE), the method comprising: communicating with a serving cell using a first receiver; as well as One or more measurements are performed on a low power reference signal (LP-RS) in an RRC connected mode using a second receiver having lower power consumption than the first receiver.

17. The method according to claim 16, further comprising: A configuration of an offset for at least one threshold associated with the one or more measurements of the LP-RS is received.

18. The method according to claim 16, further comprising: An offset between the LP-RS measured at the second receiver and a corresponding reference signal measured at the first receiver is determined.

19. The method of claim 18, wherein the corresponding reference signal comprises a synchronization signal block (SSB) configured in the same bandwidth part (BWP) as the LP-RS.

20. The method according to claim 16, further comprising: A measurement object configuration indicating an LP-RS configuration is received.

21. The method of claim 16, wherein the one or more measurements comprise a serving cell measurement, the method further comprising: An LP-RS configuration associated with a bandwidth part (BWP) not including a synchronization signal block (SSB) is received, the LP-RS being included in at least one of a serving cell measurement object configuration or a BWP-specific measurement object configuration.

22. An apparatus for wireless communication at a network node, the apparatus comprising: at least one memory; and at least one processor coupled to the at least one memory and, based at least in part on the stored information stored in the at least one memory, the at least one processor, alone or in any combination, configured to cause the network node to: providing a low power reference signal (LP-RS) configuration for a user equipment (UE) for performing one or more measurements in an RRC connected mode using a second receiver at the UE, wherein the second receiver at the UE has lower power consumption than a first receiver at the UE; as well as The LP-RS is transmitted based on the LP-RS configuration.

23. The apparatus of claim 22, wherein the one or more measurements comprise radio resource management (RRM) measurements of a serving cell or one or more neighboring cells.

24. The apparatus according to claim 22, further comprising: and at least one transceiver coupled to the at least one processor, wherein the at least one processor is further configured to cause the network node to send communications to the UE for receipt by the first receiver, the communications overlapping in time with the LP-RS.

25. The apparatus of claim 22, wherein the one or more measurements comprise inter-frequency measurements.

26. The apparatus of claim 22, wherein the one or more measurements comprise a serving cell measurement.

27. The apparatus of claim 22, wherein the LP-RS configuration is associated with a bandwidth part (BWP) that does not include a synchronization signal block (SSB), the LP-RS being included in at least one of a serving cell measurement object configuration or a BWP-specific measurement object configuration.

28. The apparatus of claim 22, wherein the LP-RS configuration comprises at least one of: a time position of the LP-RS relative to a synchronization signal block (SSB) of a specific frequency, a frequency position of the LP-RS relative to a target frequency, or The LP-RS measurement offset relative to the SSB measurement.

29. A method for wireless communication at a network node, the method comprising: providing a low power reference signal (LP-RS) configuration for a user equipment (UE) for performing one or more measurements in an RRC connected mode using a second receiver at the UE, wherein the second receiver at the UE has lower power consumption than a first receiver at the UE; as well as The LP-RS is transmitted based on the LP-RS configuration.

30. The method according to claim 29, further comprising: Communications are sent to the UE for receipt by the first receiver, the communications overlapping in time with the LP-RS.

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