Bandwidth portion consideration for primary radio assisted by low power wake-up radio

Abstract

A method of wireless communication at a UE is disclosed. The method includes monitoring the BWP via the first radio based on the first configuration. The method includes switching to monitor the subband based on a second configuration and via a second radio having lower power consumption than the first radio based on an occurrence of at least one condition. The method includes waking up to receive a communication in response to receiving a wake-up signal in the subband via the second radio.

Description

Technical Field

[0001] The present disclosure relates generally to communication systems, and more particularly to bandwidth parts (BWPs). Background Art

[0002] 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.

[0003] 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

[0004] 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.

[0005] 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 includes a memory and at least one processor coupled to the memory, and based at least in part on information stored in the memory, the at least one processor is configured to: monitor a bandwidth part (BWP) via a first radio based on a first configuration; switch to monitoring a subband via a second radio based on a second configuration and having lower power consumption than the first radio based on the occurrence of at least one condition; and wake up to receive communication in response to receiving a wake-up signal in the subband via the second radio.

[0006] In one aspect of the present disclosure, a method, computer-readable medium, and apparatus for wireless communication at a network node are provided. The apparatus includes a memory and at least one processor coupled to the memory, and based at least in part on information stored in the memory, the at least one processor is configured to: send a first configuration associated with a first radio of the UE associated with a first power consumption, wherein the first radio is associated with a BWP, for a UE; send a second configuration associated with a second radio of the UE, wherein the second radio is associated with a second power consumption less than the first power consumption, for the UE; and send a wake-up signal in a subband associated with the second radio of the UE.

[0007] 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

[0008] Figure 1 is a diagram illustrating an example of a wireless communication system and an access network.

[0009] Figure 2A is a diagram illustrating an example of a first frame according to various aspects of the present disclosure.

[0010] Figure 2B is a diagram illustrating an example of downlink (DL) channels within a subframe according to various aspects of the present disclosure.

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

[0012] Figure 2D is a diagram illustrating an example of uplink (UL) channels within a subframe according to various aspects of the present disclosure.

[0013] Figure 3 is a diagram illustrating an example of a base station and a UE in an access network.

[0014] Figure 4A is a frequency diagram illustrating example aspects of a BWP.

[0015] Figure 4B is a diagram illustrating an example of BWP adaptation.

[0016] Figure 5 is a diagram illustrating an example of DCI-based BWP switching and an example of timer-based BWP switching.

[0017] Figure 6 is a diagram illustrating an example of a primary radio of a UE, a low power wake-up receiver (LP-WUR) of the UE, and a timeline associated with the primary radio and the LP-WUR.

[0018] Figure 7 is a diagram illustrating an example of a BWP and an LP-WUR BWP within the BWP.

[0019] Figure 8 is a diagram illustrating an example timeline of monitoring a BWP via a primary radio and a LP-WUR and a LP-WUR BWP.

[0020] Fig. 9 is a diagram illustrating an example of a main radio configuration and an LP-WUR configuration.

[0021] Fig.10 is a diagram illustrating an example BWP, LP-WUR BWP, and a timer.

[0022] Fig.11 is a diagram illustrating an example timeline depicting switching between a monitoring BWP and a LP-WUR BWP based on expiration of a first timer and a second timer.

[0023] Fig.12 is a diagram illustrating an example timeline depicting switching between a monitoring BWP and a LP-WUR BWP based on expiration of a first timer, a second timer, and a third timer.

[0024] Fig.13 is a diagram illustrating an example of downlink control information (DCI).

[0025] Fig.14 is a diagram illustrating example communications between a UE and a base station.

[0026] Fig.15 is a flow chart of a wireless communication method according to aspects of the present disclosure.

[0027] Fig.16 is a flow chart of a wireless communication method according to aspects of the present disclosure.

[0028] Fig.17 is a flow chart of a wireless communication method according to aspects of the present disclosure.

[0029] Fig.18 is a flow chart of a wireless communication method according to aspects of the present disclosure.

[0030] Fig.19 are diagrams illustrating examples of hardware implementations of example devices and / or UEs configured to perform aspects of the present disclosure.

[0031] Fig. 20 is a diagram illustrating an example of a hardware implementation of an example network entity configured to perform aspects of the present disclosure. DETAILED DESCRIPTION

[0032] The UE may be configured with multiple radios, which may have different power consumption. As an example, the UE may include a main radio and an LP-WUR, wherein the main radio may be associated with higher power consumption than the LP-WUR. The UE may put the main radio into a sleep state and may monitor a wake-up signal in the BWP via the LP-WUR. Monitoring the BWP for the wake-up signal consumes power. In addition, if the wake-up signal is to be received in a BWP different from the current BWP, the UE may have to perform a BWP switch, which may involve RF tuning, using different antennas, and / or ascertaining channel characteristics associated with different BWPs. Various techniques related to BWP and LP-WUR BWP are disclosed herein to achieve improved power saving at the UE. In an example, the UE monitors the BWP via a first radio based on a first configuration. The UE switches to a second radio based on a second configuration and monitoring a subband via a second radio having lower power consumption than the first radio based on the occurrence of at least one condition. The UE wakes up to receive communication in response to receiving a wake-up signal in the subband via the second radio. When switching to monitoring the subband via the second radio (i.e., LP-WUR), the UE may consume less power than using the primary radio to monitor the wider BWP. In addition, by monitoring the subband of the BWP, the UE may avoid BWP switching, avoid RF tuning or retuning. Subband monitoring using LP-WUR may reuse, for example, antenna and / or channel characteristics associated with the BWP.

[0033] 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.

[0034] 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.

[0035] 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. 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.

[0036] 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. As an 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 medium that can be used to store computer-executable code in the form of instructions or data structures that can be accessed by a computer.

[0037] 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 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 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.

[0038] 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 NRBS, 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.

[0039] 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).

[0040] 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.

[0041] 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.

[0042] 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.

[0043] 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.

[0044] 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.

[0045] 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 functional splitting (such as lower layer functional splitting). 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 specific implementations, real-time and non-real-time aspects of control plane 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).

[0046] 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 .

[0047] 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.

[0048] 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 adjust 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).

[0049] 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 of up to Y MHz (e.g., 5MHz, 10MHz, 15MHz, 20MHz, 100MHz, 400MHz, etc.) bandwidth. These carriers may or may not be adjacent to each other. The allocation of carriers may be asymmetric with respect to DL and UL (e.g., more or fewer carriers may be allocated for DL ​​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).

[0050] 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). The D2D communication may be through a variety of wireless D2D communication systems, such as, for example, Bluetooth, Wi-Fi based on the Institute of Electrical and Electronics Engineers (IEEE) 802.11 standard, LTE, or NR.

[0051] 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.

[0052] The electromagnetic spectrum is typically subdivided into various categories, bands, channels, etc. based on frequency / wavelength. In 5GNR, 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 (interchangeably) referred to as the "below 6 GHz" band in various documents and articles. A similar naming problem sometimes occurs with respect to FR2, which is often (interchangeably) referred to as the "millimeter wave" band in documents and articles, although it is different from the extremely high frequency (EHF) band (30 GHz-300 GHz) identified as the "millimeter wave" band by the International Telecommunication Union (ITU).

[0053] 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.

[0054] 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.

[0055] 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.

[0056] 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 transmit receive point (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).

[0057] 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), serving 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 serving base station 102. 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.

[0058] 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 cluster arrangement. One or more of these devices may access the network collectively and / or individually.

[0059] See again Figure 1 In some aspects, the UE 104 may include an LP wake-up component 198 configured to monitor the BWP via a first radio based on a first configuration; switch to monitoring the subband based on a second configuration and via a second radio having lower power consumption than the first radio based on the occurrence of at least one condition; and wake up to receive communications in response to receiving a wake-up signal in the subband via the second radio. In some aspects, the base station 102 may include an LP wake-up component 199 configured to: send a first configuration associated with a first radio of the UE associated with a first power consumption, wherein the first radio is associated with the BWP, send a second configuration associated with a second radio of the UE, wherein the second radio is associated with a second power consumption less than the first power consumption, and send a wake-up signal in a subband associated with the second radio of the UE. Although the following description may focus on 5G NR, the concepts described herein may be applicable to other similar fields, such as LTE, LTE-A, CDMA, GSM, and other wireless technologies.

[0060] 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.

[0061] 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 can be scaled with 1 / SCS.

[0062]

[0063]

[0064] Table 1: Parameter set, SCS and CP

[0065] 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).

[0066] 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.

[0067] 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).

[0068] 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.

[0069] 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 teeth of the comb. The SRS may be used by the base station for channel quality estimation to achieve frequency-dependent scheduling of the UL.

[0070] 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.

[0071] 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 delivery 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.

[0072] 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.

[0073] 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.

[0074] The controller / processor 359 may be associated with a memory 360 that stores program codes and data. The 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.

[0075] 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.

[0076] 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.

[0077] 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.

[0078] The controller / processor 375 may be associated with a memory 376 that stores program codes and data. The 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.

[0079] At least one of the TX processor 368, the RX processor 356, and the controller / processor 359 may be configured to combine Figure 1 The LP wake-up component 198 is used to perform various aspects.

[0080] At least one of the TX processor 316, the RX processor 370, and the controller / processor 375 may be configured to combine Figure 1 The LP wake-up component 199 is used to perform various aspects.

[0081] A UE may be configured with multiple BWPs within a carrier frequency. Figure 4A Included is a frequency diagram 450 showing an example of three BWPs (eg, BWP1, BWP2, and BWP3), each BWP spanning a set of frequency resources, such as a set of PRBs within a carrier bandwidth. Figure 4A The examples illustrate that BWPs may or may not overlap. A BWP may be activated for a UE from a set of configured BWPs. It may not be expected that the UE receives PDSCH, PDCCH, CSI-RS, TRS, etc. outside of an active downlink BWP. The UE may not send PUSCH or PUCCH outside of an active uplink BWP. In some aspects, the UE may receive an indication from the network to switch from a first active BWP to a second active BWP, the first active BWP and the second active BWP being from a set of configured BWPs. In some aspects, the UE may switch BWPs based on the occurrence of an event, such as expiration of a timer. Figure 4A As illustrated, each downlink BWP may include a control resource set (CORESET) corresponding to a configurable set of time-frequency physical resources, which the UE uses to monitor PDCCH / DCI when the corresponding BWP is activated. For example, if the UE receives an indication for switching to BWP 1, the UE may monitor control signaling in the corresponding CORESET in BWP 1. If the UE receives an indication for switching to BWP 2, the UE may monitor control signaling in the CORESET in BWP 2. Figure 4B 4 is a diagram illustrating an example of BWP adaptation. In some wireless communication systems (e.g., 5G NR), some UEs may not support sending / receiving data / signals over the entire maximum carrier bandwidth, or may benefit from sending, receiving, and monitoring over a reduced bandwidth. BWP may refer to a bandwidth that is less than or equal to the maximum carrier bandwidth. In an example, a UE may be configured with up to four BWPs with different frequency ranges, and one BWP may be active for the UE at a particular time. A BWP may be characterized by a set of parameters (subcarrier spacing and cyclic prefix) and a set of contiguous resource blocks in the parameter set of the BWP. BWP adaptation (e.g., changing from using one active BWP to using a different BWP to communicate with the network) may also be referred to as BWP switching.

[0082] Diagram 400 depicts an example of resources in frequency and time. The diagram depicts a maximum carrier bandwidth 402. The diagram also depicts a first BWP 404 and a second BWP 406. In an example, the first BWP 404 may have a first bandwidth and the second BWP 406 may have a second bandwidth. In an example, the second bandwidth may be greater than the first bandwidth. In an example, the UE may monitor a control channel using the first BWP 404, and the UE may receive / send data using the second BWP 406. The UE may switch BWPs based on the expiration of one or more timers or based on receiving a DCI from a base station. In an example, one BWP may be active at a time. For example, the first BWP 404 may be active for a first duration 408. At the end of the first duration 408, the UE may switch the active BWP to the second BWP 406. The second BWP 406 may be active for a second duration 410. At the end of the second duration 410, the UE may switch the active BWP back to the first BWP 404. The first BWP 404 may then be active for a third duration 412. The different BWPs to which the UE switches may overlap, such as Figure 4B as shown, or may be non-overlapping, such as from Figure 4A BWP1 to Figure 4A Changes in BWP2.

[0083] Figure 5 5 is a diagram illustrating an example of a DCI-based BWP switch 502 and an example of a timer-based BWP switch 504. In the DCI-based BWP switch 502, the DCI may trigger a BWP switch at the UE from sending or receiving communications (e.g., PDCCH / PUCCH or PDSCH / PUSCH) or monitoring such communications in frequency resources associated with the current BWP to resources associated with a new BWP. The DCI-based BWP switch 502 may also be referred to as a layer 1 (L1)-based BWP switch.

[0084] In the example of DCI-based BWP switching 502, a first time slot 506, a second time slot 508, a third time slot 510, a fourth time slot 512, a fifth time slot 514, and a sixth time slot 516 are illustrated. DCI 518 is received in the second time slot 508. The UE may switch to the new BWP to receive a PDSCH transmission (e.g., PDSCH transmission 520) or send a PUSCH transmission after the start of a downlink time slot n (e.g., n=2). The UE may experience a delay (e.g., a time gap) between communications on the previous BWP and communications on the new BWP. For example, the example at 502 shows that DCI 518 is received after a BWP switching delay 522. In the example depicted in diagram 500, the BWP switching delay 522 may be two time slots. During the BWP switching delay 522, the UE may not send or receive data / signals, for example, the UE is preparing to communicate the data / signals in the new BWP. For example, the UE may not receive data / signals in the third time slot 510 or the fourth time slot 512. The BWP switching delay 522 may also be referred to as T BWPswitchingDelay .

[0085] In the example of timer-based BWP switching shown at 504, a BWP inactivity timer 524 associated with the UE expires at the end of the second time slot 508. In response to the expiration of the BWP inactivity timer, the UE may switch to a new BWP to receive a PDSCH transmission (e.g., PDSCH transmission 520) or send a PUSCH transmission after the time slot corresponding to the expiration of the BWP inactivity timer 524 (i.e., after the start of the downlink time slot n after the expiration of the BWP inactivity timer 524). As illustrated, when the UE switches between BWPs, there may be a switching delay 522. During the BWP switching delay 522, the UE may not send or receive data / signals. For example, the UE may not receive data / signals in the third time slot 510 or the fourth time slot 512.

[0086] The BWP switching delay 522 may depend on the parameter set (μ), the slot length, and the UE capabilities (e.g., Type 1 or Type 2). If the BWP switching involves a change in SCS, the BWP delay may be determined by the smaller SCS between the current SCS of the current BWP and the new SCS of the new BWP. Table 2 details various aspects of the BWP switching delay.

[0087]

[0088] Table 2: Parameter sets, NR slot lengths and BWP switching delays

[0089] Figure 6is a diagram 600 illustrating an example of a primary radio 602 of a UE 610 , a low power wake-up receiver (LP-WUR) 604 of the UE 610 , and a timeline 608 associated with the primary radio and the LP-WUR. Figure 6 An example of a UE 611 is also illustrated, in which the LP-WUR 604 may include a subset of the components of the main radio 602. In an example, the main radio 602 may be associated with general transmission / reception of data / signals at the UE 610. The main radio 602 and the LP-WUR may operate in different states. The main radio 602 may be in a sleep state or an active state. In an example, the main radio 602 may not be able to send / receive data / signals when in the sleep state. In an example, the main radio 602 may be able to send / receive data / signals when in the active state. The LP-WUR 604 may be a companion receiver of the main radio 602. The LP-WUR 604 may monitor for wake-up signals when the main radio 602 is in the sleep state. In an example, the main radio 602 may be associated with a first power consumption and the LP-WUR 604 may be associated with a second power consumption, wherein the first power consumption is greater than the second power consumption. The LP-WUR 604 may monitor for signals, such as wake-up signals (e.g., low power wake-up signals (LP-WUS)) that instruct the UE to wake up the primary radio 602. By design, the LP-WUR 604 may consume less power than the primary radio 602, i.e., the LP-WUR 604 may be powered separately from the primary radio 602 and may utilize blocks associated with less power consumption than blocks associated with the primary radio 602. In some aspects, the LP-WUS may utilize a simplified modulation scheme (e.g., which may be referred to as a higher power WUS) compared to the WUS. As an example, the LP-WUS may be based on an on-off keying (OOK) modulation scheme. The OOK modulation scheme may result in a smaller payload size for the LP-WUS. By utilizing the LP-WUR 604 to monitor for wake-up signals (as opposed to the primary radio 602), the UE 610 may avoid waking up the primary radio 602 and may therefore reduce power consumption. In addition, because the LP-WUR 604 may consume less power than the main radio 602, the LP-WUR 604 may allow for more frequent wake-up signal monitoring and, therefore, may reduce average latency at the UE 610. The main radio 602 and the LP-WUR 604 may be connected to one or more antennas 606. The main radio 602 and the LP-WUR 604 may be connected to one or more of a radio frequency (RF) module or component, a hardware (HW) module or component, a software (SW) module or component, and / or a firmware (FW) module or component.

[0090] As illustrated by timeline 608, LP-WUR 604 may receive a wake-up signal 612 (e.g., LP-WUS). Upon receiving the wake-up signal 612, the UE may wake up the primary radio 602. As an example, LP-WUR 604 may send a signal to transition the primary radio 602 from a sleep state to an active state so that the primary radio 602 may send / receive data / signals.

[0091] In some aspects, the preamble 614 may be part of the wake-up signal 612 or may be added to the wake-up signal 612. The preamble 614 may be a synchronization sequence or signal. The preamble 614 may be configured under the wake-up signal configuration. The wake-up signal 612 may be associated with a first periodicity, and the preamble 614 may be associated with a second periodicity. The first periodicity may be the same, similar, or different from the second periodicity. The preamble 614 may be associated with functionality similar to functionality associated with a low power synchronization signal (LP-SS). The preamble 614 may precede the wake-up signal. The design, number of symbols, sequence used, or scrambling identifier (ID) of the preamble 614 may be the same or different from those of the LP-SS.

[0092] In some aspects, the size / length of the preamble may vary based on how close the preamble is separated in time from the LP-SS. For example, Figure 6 A timeline 616 including an LP-SS, a preamble, and a wake-up signal is depicted. In an example, a first preamble 620 may have a first size / length based on a time difference between a time when the LP-SS 618 is transmitted and a time when the first preamble 620 is transmitted, a second preamble 622 may have a second size / length based on a time difference between a time when the LP-SS 618 is transmitted and a time when the second preamble 622 is transmitted, and a third preamble 624 may have a third size / length based on a time difference between a time when the LP-SS 618 is transmitted and a time when the third preamble 624 is transmitted. In an example, the first size / length may be less than or equal to the second size / length. In an example, the second size / length may be greater than or equal to the first size / length, and the second size / length may be less than or equal to the third size / length. In an example, the third size / length may be greater than or equal to the second size / length. In an example, a preamble that appears near an LP-SS may be shorter than another preamble because the UE may use the LP-SS for most synchronization procedures. In one aspect, the preamble after the LP-SS may be canceled or not sent (i.e., a preamble of size / length zero). This may depend on the time between the LP-SS and the preamble and may be indicated in the configuration. In an example, the preamble may be canceled / not sent based on L1 / L2 / L3 signaling sent from a base station (e.g., a gNB) to the UE.

[0093] The LP-WUR 604 may be used for an Internet of Things (IoT) device. In an example, the UE 610 may be an IoT device. For example, the LP-WUR 604 may be used for IoT devices that are associated with low power consumption and are latency tolerant (e.g., periodic sensing, metering, etc.). The main radio 602 and the LP-WUR 604 may be duty cycled to reduce power consumption. Longer latency may be associated with lower power consumption of the UE 610. Example scenarios associated with lower latency characteristics include actuator control, on-demand sensing applications, and / or on-demand positioning.

[0094] As described above, the UE may be configured with a primary radio and an LP-WUR, wherein the primary radio may be associated with higher power consumption than the LP-WUR. The UE may put the primary radio into a sleep state and may monitor a wake-up signal in the BWP via the LP-WUR. However, monitoring the BWP for the wake-up signal may consume power. In addition, if the wake-up signal is to be received in a BWP different from the current BWP, the UE may have to perform a BWP switch, which may involve RF tuning, using different antennas, and / or ascertaining channel characteristics associated with different BWPs. Various techniques related to BWP and LP-WUR BWP to achieve improved power saving at the UE are disclosed herein. In an example, the UE monitors the BWP via a first radio based on a first configuration. The UE switches to a second radio based on a second configuration and monitoring a subband via a second radio having lower power consumption than the first radio based on the occurrence of at least one condition. The UE wakes up to receive communication in response to receiving a wake-up signal in the subband via the second radio. When switching to monitoring the subband via the second radio (i.e., LP-WUR), the UE may consume less power than using the primary radio to monitor a wider BWP. Furthermore, by monitoring the subbands of the BWP, the UE can avoid BWP switching, avoid RF tuning or retuning. Subband monitoring using LP-WUR can reuse, for example, antenna and / or channel characteristics associated with the BWP.

[0095] Figure 7700 is a diagram illustrating an example of a BWP and an LP-WUR BWP within a BWP. Diagram 700 depicts a first BWP 702 and a second BWP 704. The first BWP 702 and the second BWP 704 may be associated with a first configuration of a UE. In an example, the first BWP 702 and the second BWP 704 may be configured / defined for a primary radio (e.g., primary radio 602) of the UE. Diagram 700 also depicts a first LP-WUR BWP 706 in the first BWP 702 and a second LP-WUR BWP 708 in the second BWP 704. The first LP-WUR BWP 706 and the second LP-WUR BWP 708 may also be referred to as subbands of the first BWP 702 and the second BWP 704, respectively. In other words, the first LP-WUR BWP 706 may occupy less bandwidth than the bandwidth occupied by the first BWP 702, and the second LP-WUR BWP 708 may occupy less bandwidth than the bandwidth occupied by the second BWP 704. The first LP-WUR BWP 706 and the second LP-WUR BWP 708 may be associated with a second configuration of the UE. In an example, the first LP-WUR BWP 706 and the second LP-WUR BWP 708 may be configured / defined for an LP-WUR (e.g., LP-WUR 604) of the UE.

[0096] As will be described in more detail below, the primary radio of the UE (e.g., primary radio 602) may monitor a BWP (e.g., first BWP 702) for data / signals. Upon occurrence of a condition (or conditions), the UE may switch to monitoring a LP-WUR BWP (e.g., first LP-WUR BWP 706 or second LP-WUR BWP 708) for data / signals. In an example, the condition may be or include expiration of one or more timers and / or receipt of DCI.

[0097] Figure 8 800 is a diagram illustrating an example timeline of monitoring a BWP and a LP-WUR BWP via a primary radio and a LP-WUR of a UE. In the example, the BWP may be the first BWP 702 or the second BWP 704, the LP-WUR BWP may be the first LP-WUR BWP 706 or the second LP-WUR BWP 708, the primary radio may be the primary radio 602 of the UE 610, and the LP-WUR may be the LP-WUR 604 of the UE 610.

[0098] At 802, the UE may communicate via the UE's primary radio ( Figure 8In other words, the BWP may be an active BWP and the UE may monitor the active BWP for data / signals via the primary radio. At 804, the UE may detect that a condition occurs. In an example, the condition may be the expiration of a timer (e.g., a BWP timer or another timer). In another example, the condition may be receiving a DCI indicating that a BWP switch will occur.

[0099] At 806, after the UE detects that the condition has occurred, the UE may switch to monitoring the LP-WUR BWP via the primary radio. At 808, the UE may monitor the LP-WUR BWP via the LP-WUR. At 810, after or concurrently with monitoring the LP-WUR BWP via the LP-WUR, the UE may put the primary radio into a sleep state. At 812, the LP-WUR of the UE may receive a wake-up signal in the LP-WUR BWP. At 814, the UE may wake up the primary radio based on the LP-WUR receiving the wake-up signal in the LP-WUR BWP.

[0100] Fig. 9 900 is a diagram illustrating an example of a primary radio configuration 902 and a LP-WUR configuration 904. A UE (e.g., UE 610) may receive the primary radio configuration 902 and / or the LP-WUR configuration 904 via RRC signaling. In an example, the primary radio configuration 902 may be associated with the primary radio 602 and the LP-WUR configuration 904 may be associated with the LP-WUR 604.

[0101] The primary radio configuration 902 may include a BWP definition 906 that defines a plurality of BWPs (e.g., four BWPs). Each of the plurality of BWPs may have a different associated bandwidth. The plurality of BWPs may be associated with the primary radio of the UE. The primary radio configuration may include an indication of an initial active BWP 908 among the plurality of BWPs. The primary radio configuration 902 may include a BWP switching condition 910. The BWP switching condition 910 may include an indication of a BWP inactivity timer 912. For example, the indication of the BWP inactivity timer 912 may include a timer duration. The BWP switching condition 910 may also include characteristics related to a DCI BWP switching 914.

[0102] The primary radio configuration 902 may indicate primary radio parameters 916 (e.g., for the primary radio 602). The primary radio parameters 916 may also indicate characteristics of a wake-up monitoring opportunity, characteristics of a reference signal, characteristics of a synchronization signal, characteristics of a wake-up signal, characteristics of a preamble signal associated with a wake-up signal, characteristics associated with PDCCH monitoring, characteristics associated with channel state information (CSI) or CSI-RS, characteristics associated with an SRS, or characteristics associated with transmission and / or reception of data.

[0103] The LP-WUR configuration 904 may include an LP-WUR BWP definition 918. The LP-WUR BWP definition 918 may define a plurality of LP-WUR BWPs, wherein each of the plurality of LP-WUR BWPs may be within one of the plurality of BWPs defined in the BWP definition 906. The LP-WUR configuration 904 may include a BWP / LP-WUR BWP switching condition 920. The BWP / LP-WUR BWP switching condition 920 may include an indication of one or more timers 922. The one or more timers 922 may include a BWP inactivity timer, other timers, a BWP switching delay, and the like. The BWP / LP-WUR BWP switching condition 920 may include characteristics related to a DCI BW / LP-WUR BWP switching 924.

[0104] The LP-WUR configuration 904 may indicate LP-WUR parameters 926. The LP-WUR parameters 926 may be associated with a LP-WUR (e.g., LP-WUR 604). The LP-WUR parameters 926 may also include one or more parameters that may be inherited from (e.g., based on or sharing) the master radio parameters 916. In an example, the LP-WUR configuration 904 may inherit (e.g., be based on or share) the master radio parameters 916 and may include modifications to the inherited (e.g., shared) parameters. In an example, the LP-WUR parameters 926 may indicate characteristics of a wake-up monitoring opportunity (e.g., an LP-WUS monitoring opportunity), characteristics of a reference signal (e.g., a low power reference signal (LP-RS) and a repetition of the LP-RS) (such as characteristics used for channel estimation and / or time / frequency error correction), characteristics of a synchronization signal (e.g., a low power synchronization signal (LP-SS)) (such as characteristics used for time and frequency synchronization, characteristics of a wake-up signal (e.g., a repetition of the LP-WUS)), characteristics of a preamble signal associated with the wake-up signal, and characteristics associated with PDCCH monitoring. (e.g., a list or index of search space set groups (SSSG) for monitoring PDCCH), characteristics associated with CSI or CSI-RS (e.g., characteristics associated with CSI-RS monitoring and transmission of CSI reports), characteristics associated with SRS (e.g., characteristics associated with SRS configuration and transmission), characteristics associated with configuration grant (CG) and / or semi-persistent scheduling (SPS) (e.g., CG / SPS configuration of CG and SPS), or characteristics associated with transmission and / or reception of data (e.g., characteristics associated with transmission and / or reception of (small) data). The LP-WUR configuration 904 may also inherit or share other aspects of the main radio configuration 902 (e.g., an indication of a BWP inactivity timer 912).

[0105] In one aspect, the primary radio configuration 902 (and, by extension, the primary radio parameters 916) and the LP-WUR configuration 904 (and, by extension, the LP-WUR parameters 926) may be based on UE reported capabilities. The UE reported capabilities may include the configuration types that may be used for each radio (e.g., the primary radio and the LP-WUR) during a specific duration or a total time. The UE reported capabilities may also indicate that the wake-up receiver (WUR) (e.g., the LP-WUR) may support (1) PDCCH-based DCI (e.g., polarity-coded DCI used in NR), (2) sequence-based signals such as PUCCH 0 or other reference signals that may be used for wake-up (e.g., DFT, Zadoff-Chu sequence, Gold transform, Hadamard transform, etc.), or (3) OOK / amplitude shift keying (ASK) / frequency shift keying (FSK)-based modulation waveforms (e.g., OFDM waveforms). PDCCH-based DCI may be associated with greater power consumption than sequence-based signals, and sequence-based signals may be associated with greater power consumption than OOK / ASK / FSK-based modulation waveforms. PDCCH-based DCI may be associated with greater / higher sensitivity or network coverage than sequence-based signals, and sequence-based signals may be associated with greater / higher sensitivity or network coverage than OOK / ASK / FSK-based modulation waveforms.

[0106] The capabilities reported by the UE may be dynamic and indicated from time to time in layer 1, layer 2, or layer 3 signaling. The capabilities reported by the UE may be indicated in a capability information message or in user assistance information (e.g., an RRC indication). The network and / or the UE may collaboratively decide (e.g., based on an agreement) whether PDCCH-based DCI, sequence-based signals, or OOK / ASK / FSK-based modulation waveforms may be used from time to time (e.g., during the next period when the LP-WUR monitors for a wake-up signal or a paging signal). If more than one of PDCCH-based DCI, sequence-based signals, or OOK / ASK / FSK-based modulation waveforms is supported by the WUR, the UE may be configured with multiple configurations for the LP-WUS. In an example, a PDCCH-based DCI, a sequence-based signal, or an OOK / ASK / FSK-based modulation waveform may be utilized by a UE based on at least one of the following: the location of the UE (e.g., the UE is a cell near or far from the serving cell), the mobility of the UE, the sensitivity characteristics associated with the NW at a specific time or duration, the power state of the UE (e.g., the UE cannot process a specific type of signal (e.g., polarity-coded DCI) or processes it using high power), or a sleep mode of the UE's primary radio. The UE, a base station (e.g., a gNB), or a network may determine that the UE will utilize a PDCCH-based DCI, a sequence-based signal, or an OOK / ASK / FSK-based modulation waveform at a specific time. The network may use one or more of the LP-WUS types (e.g., a PDCCH-based DCI, a sequence-based signal, or an OOK / ASK / FSK-based modulation waveform) based on the capabilities reported by the UE at the specific time and the network sensitivity and coverage characteristics. The UE may monitor the WUS signal based on the capabilities reported by the UE. In some cases, a UE capable of handling multiple WUSs may be signaled by the network to use a first type of LP-WUS during a first time or a first duration, and then to use a second type of LP-WUS during a second time or a second duration. In some cases, the network may transmit more than one WUS type, and the UE may select which WUS type the UE can monitor and process based on the capabilities reported by the UE. In some cases, the network decision may be based on UE mobility (e.g., based on UE reports or measured by UL sounding signals (SRS)) or current sensitivity or coverage characteristics. In some cases, the LP-SS and LP-RS and preamble signal types may also change based on the type of LP-WUS. For example, an SSB or CSI-RS or TRS or DMRS-type LP-SS / LP-RS / preamble signal may be associated with a PDCCH-based DCI (polarity decoding), while a sequence-based or OOK-based LP-SS or preamble may be associated with a sequence-based or OOK-based LP-WUS.

[0107] Fig.10 1000 is a diagram illustrating example BWPs, LP-WUR BWPs, and timers. Diagram 1000 includes a first example 1002 and a second example 1004. The first example 1002 and the second example 1004 depict a BWP 1006, a DCI 1008, a PDSCH transmission 1010, a BWP switching delay 1012, and a LP-WUR BWP 1014. BWP 1006 may be the first BWP 702 or the second BWP 704. DCI 1008 may be DCI 518. PDSCH transmission 1010 may be PDSCH transmission 520. BWP switching delay 1012 may be BWP switching delay 522. LP-WUR BWP 1014 may be the first LP-WUR BWP 706 or the second LP-WUR BWP 708.

[0108] In the first example 1002, the UE (e.g., UE 610) may switch from monitoring the BWP 1006 for data / signals to monitoring the LP-WUR BWP 1014 based on the expiration of the BWP inactivity timer 524 (e.g., the BWP inactivity timer 1016) and the BWP switching delay 1012. Although not depicted in the diagram 1000, the UE may also switch to monitoring another BWP based on the expiration of the BWP inactivity timer 1016 and the BWP switching delay 1012.

[0109] In a second example 1004, the UE may switch from monitoring the BWP 1006 for data / signal to monitoring the LP-WUR BWP 1014 based on the expiration of the LP-WUR BWP inactivity timer 1018 and the BWP switching delay 1012. In an example, the LP-WUR BWP inactivity timer 1018 may have a shorter duration than the duration of the BWP inactivity timer 1016.

[0110] Fig.111100 is a diagram illustrating an example timeline depicting a UE switching between a monitoring BWP and a LP-WUR BWP based on expiration of a first timer 1102 and expiration of a second timer 1104. In an example, the BWP may be the first BWP 702 and the LP-WUR BWP may be the first LP-WUR BWP 706, the new BWP may be the second BWP 704, the new LP-WUR BWP within the new BWP may be the second LP-WUR BWP 708, the primary radio may be the primary radio 602 of the UE 610, and the LP-WUR may be the LP-WUR 604 of the UE 610. The first timer 1102 and the second timer 1104 may be configured via RRC signaling, medium access control (MAC) control element (MAC-CE) signaling, or DCI. In an example, the first timer 1102 or the second timer 1104 may be or include a BWP inactivity timer and / or may be associated with a BWP switching delay. The first timer 1102 and the second timer 1104 may be configured based on UE capabilities (eg, based on UE type or UE category). The first timer 1102 and the second timer 1104 may be defined in a specification.

[0111] At 1106, the UE may monitor the BWP via the primary radio, or the UE may monitor the LP-WUR BWP via the LP-WUR. At 1108, based on the expiration of the first timer 1102, the UE may switch to monitoring the new BWP via the primary radio. At 1110, based on the expiration of the second timer 1104, the UE may switch to monitoring the new LP-WUR BWP within the new BWP via the LP-WUR.

[0112] Fig.121200 is a diagram illustrating an example timeline for switching between a monitoring BWP and a LP-WUR BWP based on expiration of a first timer 1202, a second timer 1204, and a third timer 1206. In an example, the BWP may be the first BWP 702, the LP-WUR BWP in the BWP may be the first LP-WUR BWP 706, the new BWP may be the second BWP 704, the new LP-WUR BWP within the new BWP may be the second LP-WUR BWP 708, the primary radio may be the primary radio 602 of the UE 610, and the LP-WUR may be the LP-WUR 604 of the UE 610. The first timer 1202, the second timer 1204, and the third timer 1206 may be configured via RRC signaling, MAC-CE signaling, or DCI. In an example, the first timer 1202, the second timer 1204, and / or the third timer 1206 may be or include a BWP inactivity timer and / or may be associated with a BWP switching delay. The first timer 1202, the second timer 1204, and the third timer 1206 may be configured based on UE capabilities (eg, based on UE type or UE category). The first timer 1202, the second timer 1204, and the third timer 1206 may be defined in a specification.

[0113] At 1208, the UE may monitor the BWP via the primary radio of the UE. At 1210, based on expiration of the first timer 1202, the UE may switch to monitoring the LP-WUR BWP in the BWP. At 1212, based on expiration of the second timer 1204, the UE may switch to monitoring the new BWP. At 1214, based on expiration of the third timer 1206, the UE may switch to monitoring the new LP-WUR BWP in the new BWP.

[0114] Fig.13 1300 is a diagram illustrating an example of a DCI 1302. In an example, the DCI 1302 may be or include the above-mentioned DCI 518 and / or DCI 1008. The DCI may be sent by a base station to a UE (e.g., UE 104, UE 350, UE 610, etc.). The DCI 1302 may include a switching indication 1304, which indicates that the UE will switch to the monitored BWP / LP-WUR BWP after receiving the DCI 1302. In an example, the switching indication 1304 may indicate that the UE will switch to monitoring the LP-WUR BWP in the current BWP 1304A. In another example, the switching indication 1304 may indicate that the UE is to switch to monitoring a new BWP 1304B (which is different from the current BWP). In another example, the switching indication 1304 may indicate that the UE is to switch to monitoring a new LP-WUR BWP in the new BWP 1304C.

[0115] The DCI 1302 may also include an indication of one or more timers 1306. In an example, the one or more timers 1306 may include a modified value for a BWP switching delay based on UE capabilities and / or a switching indication 1304 (e.g., whether the switching indication indicates a LP-WUR BWP in the current BWP 1304A, a new BWP 1304B, or a new LP-WUR BWP in the new BWP 1304C). The one or more timers 1306 may include a BWP inactivity timer, a BWP switching delay, or another timer.

[0116] Fig.14 1400 is a diagram illustrating an example communication between a UE 1402 and a base station 1404. In an example, the UE 1402 can be any of the UEs described herein (e.g., UE 104, UE 350, UE 610, device 1904). In an example, the base station 1404 can be the base station 102, the base station 310, or the network entity 2002.

[0117] At 1406, UE 1402 may receive a BWP configuration (i.e., a first configuration) and a LP-WUR BWP configuration (i.e., a second configuration) from base station 1404. The BWP configuration and the LP-WUR BWP configuration may be received separately or concurrently via RRC signaling. The BWP configuration may be or include the primary radio configuration 902, and the LP-WUR BWP configuration may be or include the LP-WUR configuration 904. The BWP configuration and / or the LP-WUR BWP configuration may include an indication of a timer. In an example, the timer may be or include Fig.11 The BWP inactivity timer 1016, LP-WUR BWP inactivity timer 1018, the first timer 1102, and the second timer 1104 described in the description of Fig.12 The first timer 1202, the second timer 1204, and the third timer 1206 described in the description of , or another timer. The timer may also include the BWP switching delay 522 or the BWP switching delay 1012. In one aspect, at 1408, the UE 1402 may receive a MAC-CE or DCI including an indication of the above timers. In an example, the DCI may be the DCI 1302, or the DCI may include the aspects described above in the description of the DCI 1302. In an example, the UE 1402 may start one or more timers based on the BWP configuration, the LP-WUR BWP configuration, and / or the MAC-CE / DCI.

[0118] At 1410, UE 1402 may monitor the BWP via a primary radio of UE 1402. In an example, the primary radio may be primary radio 602. The BWP may be indicated / defined in the BWP configuration received at 1406 or indicated by a MAC-CE / DCI received at 1408.

[0119] At 1412, the UE 1402 may detect that one or more conditions have occurred. In an example, at 1414, the UE 1402 may detect that one or more timers have expired. In another example, at 1416, the base station 1404 may send a DCI indicating a BWP / LP-WUR BWP switch. In an example, the DCI may be DCI 1302. In this example, at 1418, the UE 1402 may detect that the DCI (sent at 1416) has been received.

[0120] At 1420, based on the condition occurring, the UE 1402 may monitor the LP-WUR BWP via the primary radio. At 1422, the UE 1402 may monitor the LP-WUR BWP via the LP-WUR of the UE 1402. At 1424, after or concurrently with monitoring the LP-WUR BWP via the LP-WUR, the UE may place the primary radio into a sleep state.

[0121] At 1426, the UE 1402 may receive a wake-up signal (eg, LP-WUS) in the LP-WUR BWP via the LP-WUR. At 1428, in response to receiving the wake-up signal, the UE 1402 may wake up to receive communications at the primary radio.

[0122] Fig.15 1500 is a flow chart of a wireless communication method. The method may be performed by a UE (e.g., UE 104, UE 350, UE 1402, device 1904). The method may be associated with various advantages at the UE, such as lower power consumption, lower latency, and / or reduced RF tuning and re-tuning via use of the same antenna and reuse of channel characteristics. In an example, the method may be performed by LP wake-up component 198.

[0123] At 1502, the UE monitors the BWP via the first radio based on a first configuration. Fig.14 At 1410, it is shown that the UE 1402 can monitor the BWP via the primary radio. In another example, Figure 8At 802, a primary radio of the UE may monitor a BWP. In another example, the first radio may be the primary radio 602. In an example, the BWP may be the first BWP 702 or the second BWP 704. In yet another example, the first configuration may be or include the primary radio configuration 902. In an example, 1502 may be performed by the LP wake-up component 198.

[0124] At 1504, the UE switches to monitoring the subband based on a second configuration and via a second radio having lower power consumption than the first radio based on the occurrence of at least one condition. Fig.14 At 1412, UE 1402 may detect that one or more conditions occur, and Fig.14 At 1422, it is shown that the UE 1402 can monitor the LP-WUR BWP (ie, subband) based on the occurrence of one or more conditions. In another example, Figure 8 At 808, the LP-WUR of the UE may monitor the LP-WUR BWP (i.e., sub-band). In another example, the second radio may be the LP-WUR 604 and the LP-WUR 604 may have lower power consumption than the primary radio 602 (i.e., the first radio). In another example, the second configuration may be the LP-WUR configuration 904. In yet another example, the sub-band may be the first LP-WUR BWP 706 or the second LP-WUR BWP 708. In an example, 1504 may be performed by the LP wake-up component 198.

[0125] At 1506, the UE wakes up to receive communications in response to receiving a wake-up signal in the subband via the second radio. Fig.14 At 1428, it is shown that the UE 1402 can wake up to receive communications in response to receiving a wake-up signal in the LP-WUR BWP via the LP-WUR. In another example, Figure 8 The UE may wake up in response to receiving a wake-up signal at the LP-WUR, as shown at 812 and 814. In an example, the wake-up signal may be the wake-up signal 612. In an example, 1506 may be performed by the LP wake-up component 198.

[0126] Fig.16 1600 is a flow chart of a wireless communication method. The method may be performed by a UE (e.g., UE 104, UE 350, UE 1402, device 1904). The method may be associated with various advantages at the UE, such as lower power consumption, lower latency, and / or reduced RF tuning and re-tuning via use of the same antenna and reuse of channel characteristics. In an example, the method (including various aspects described below) may be performed by LP wake-up component 198.

[0127] At 1608, the UE monitors the BWP via the first radio based on the first configuration. For example, Fig.14 At 1410, it is shown that the UE 1402 can monitor the BWP via the primary radio. In another example, Figure 8 At 802, a primary radio of the UE may monitor a BWP. In another example, the first radio may be the primary radio 602. In an example, the BWP may be the first BWP 702 or the second BWP 704. In yet another example, the first configuration may be or include the primary radio configuration 902. In an example, 1608 may be performed by the LP wake-up component 198.

[0128] At 1616, the UE switches to monitoring the subband based on a second configuration and via a second radio having lower power consumption than the first radio based on the occurrence of at least one condition. Fig.14 At 1412, UE 1402 may detect that one or more conditions occur, and Fig.14 At 1422, it is shown that the UE 1402 can monitor the LP-WUR BWP (ie, subband) based on the occurrence of one or more conditions. In another example, Figure 8 At 808, the LP-WUR of the UE may monitor the LP-WUR BWP (i.e., sub-band). In another example, the second radio may be the LP-WUR 604 and the LP-WUR 604 may have lower power consumption than the primary radio 602 (i.e., the first radio). In another example, the second configuration may be the LP-WUR configuration 904. In yet another example, the sub-band may be the first LP-WUR BWP 706 or the second LP-WUR BWP 708. In an example, 1616 may be performed by the LP wake-up component 198.

[0129] At 1624, the UE wakes up to receive communications in response to receiving a wake-up signal in the subband via the second radio. Fig.14 At 1428, it is shown that the UE 1402 can wake up to receive communications in response to receiving a wake-up signal in the LP-WUR BWP via the LP-WUR. In another example, Figure 8 The UE may wake up in response to receiving a wake-up signal at the LP-WUR, as shown at 812 and 814. In an example, the wake-up signal may be the wake-up signal 612. In an example, 1624 may be performed by the LP wake-up component 198.

[0130] In one aspect, the occurrence of at least one condition may include the expiration of a BWP inactivity timer. Fig.14It is shown at 1414 that the one or more condition occurrences may include the expiration of one or more timers. In another example, the BWP inactivity timer may be the BWP inactivity timer 524 or the BWP inactivity timer 1016.

[0131] In one aspect, the occurrence of the at least one condition may include the expiration of a timer, wherein the timer is different from the BWP inactivity timer. Fig.14 It is shown at 1414 that the one or more condition occurrences may include one or more timer expiration. In another example, the timer may be the BWP switching delay 522, the LP-WUR BWP inactivity timer 1018, the BWP switching delay 1012, the first timer 1102, the second timer 1104, the first timer 1202, the second timer 1204, or the third timer 1206.

[0132] In one aspect, the timer may be associated with a first duration and the BWP inactivity timer may be associated with a second duration, wherein the first duration is less than the second duration. Fig.10 It is shown that the LP-WUR BWP inactivity timer 1018 can have a first duration and the BWP inactivity timer 1016 can have a second duration, wherein the first duration is less than the second duration.

[0133] In one aspect, the sub-band may be within a BWP. For example, the sub-band may be the first LP-WUR BWP 706, and the BWP may be the first BWP 702, and Figure 7 It is shown that the first LP-WUR BWP 706 may be within the first BWP 702 .

[0134] In one aspect, the sub-band may be within a first BWP that is different from the BWP. For example, the sub-band may be the first LP-WUR BWP 706, the first BWP may be the first BWP 702, and the BWP may be the second BWP 704.

[0135] In one aspect, at 1614, the UE may switch to monitoring the subband via the first radio before switching to monitoring the subband via the second radio and after monitoring the BWP via the first radio based on the occurrence of at least one condition. For example, Fig.14 At 1420, it is shown that after one or more conditions occur at 1412, UE 1402 can monitor LP-WUR BWP (i.e., subband) via the primary radio. In another example, Figure 8At 806, the primary radio of the UE can monitor the LP-WUR BWP after the condition occurs at 804 and before the LP-WUR BWP of the UE monitors the LP-WUR BWP at 808. In an example, 1614 can be performed by the LP wake-up component 198.

[0136] In one aspect, at 1618, the UE may place the first radio into a sleep state after or concurrently with switching to monitoring the subband via the second radio. Fig.14 At 1424, it is shown that the UE 1402 can put the primary radio into a sleep state. In another example, Figure 8 The UE may place the primary radio into a sleep state as shown at 810. In an example, 1618 may be performed by the LP wake-up component 198.

[0137] In one aspect, at 1624A, waking up to receive communications includes transitioning the first radio from a sleep state to an active state. For example, timeline 608 shows that the UE can place the primary radio in an active state in response to receiving a wake-up signal 612. In another example, Figure 8 The UE may wake up the primary radio of the UE from a sleep state, as shown at 814. In an example, 1624A may be performed by the LP wake component 198.

[0138] In one aspect, at 1602, the UE may receive a first configuration prior to monitoring the BWP via the first radio. For example, Fig.14 It is shown at 1406 that the UE 1402 can receive a BWP configuration (ie, a first configuration). In another example, the first configuration can be the primary radio configuration 902. In an example, 1602 can be performed by the LP wake-up component 198.

[0139] In one aspect, at 1604, the UE may receive a second configuration prior to monitoring the BWP via the first radio. For example, Fig.14 At 1406, it is shown that the UE 1402 can receive a LP-WUR BWP configuration (ie, a second configuration). In another example, the second configuration can be the LP-WUR configuration 904. In an example, 1604 can be performed by the LP wake-up component 198.

[0140] In one aspect, the first configuration may include a first one or more parameters, and the second configuration may include a second one or more parameters, wherein at least one of the second one or more parameters may be inherited from the first one or more parameters, wherein the first configuration and the second configuration are based on the capabilities reported by the UE. For example, the first one or more parameters may be primary radio parameters 916, and the second one or more parameters may be LP-WUR parameters 926. In addition, Fig. 9It is shown that at least one of the LP-WUR parameters 926 may be inherited from the main radio parameters 916 .

[0141] In one aspect, at least one of the first one or more parameters or the second one or more parameters may indicate one or more of the following: a first characteristic of a wake-up monitoring opportunity for the second radio, a second characteristic of a reference signal for the second radio, a third characteristic of a synchronization signal for the second radio, a fourth characteristic of a wake-up signal for the second radio, a fifth characteristic of a preamble signal associated with the wake-up signal, a sixth characteristic associated with PDCCH transmission, a seventh characteristic associated with CSI or CSI-RS, an eighth characteristic associated with SRS, or a ninth characteristic associated with at least one of transmission or reception of data. For example, the main radio parameters 916 and / or the LP-WUR parameters 926 may indicate the first characteristic, the second characteristic, the third characteristic, the fourth characteristic, the fifth characteristic, the sixth characteristic, the seventh characteristic, the eighth characteristic, and / or the ninth characteristic.

[0142] In one aspect, a preamble is used for synchronization, wherein the preamble is associated with at least a first periodicity and a first bandwidth, the first periodicity and the first bandwidth being different from or equivalent to a second periodicity and a second bandwidth associated with a wake-up signal, wherein a length and a configuration of the preamble are different across different instances of the wake-up signal and are based in part on a low power synchronization signal configuration or a low power synchronization signal timing. In an example, the preamble may be preamble 614. In another example, Figure 6 It is shown that the preamble 614 can have a periodicity different from the periodicity of the wake-up signal 612. In some aspects, the preamble size / length and configuration can vary from one wake-up opportunity to another. In some examples, based on the LP-SS configuration and the LP-WUS configuration, the preamble can be associated with a WUS that is closer in time to the LP-SS, and the WUS that is closer in time to the LP-SS can have a smaller size / length than the preamble signal associated with the WUS signal that is farther away in time from the LP-SS signal. In some examples, this may be because the LP-SS can be used for synchronization (and can repair timing and frequency tracking errors due to clock drift) and can be a signal that is always present or almost always present (e.g., similar to SSB used to synchronize the main radio), and therefore the LP-WUS opportunity near the LP-SS can be associated with a smaller size / length preamble (because most timing and frequency misalignment or desynchronization problems can be repaired or adjusted by the LP-SS opportunity that occurs before the LP-WUS opportunity). The length of each preamble associated with each WUS can increase as time moves away from the LP-SS opportunity / time.

[0143] In one aspect, at 1612, the UE may receive a DCI, wherein at least one condition occurs when the DCI is received. For example, Fig.14 At 1418, it is shown that the one or more conditions can include the UE 1402 receiving the DCI. In another example, the DCI can be DCI 518, DCI 1008, and / or DCI 1302. In an example, 1612 can be performed by the LP wake-up component 198.

[0144] In one aspect, the DCI may indicate one or more of: at least one timer, a subband, a different BWP, or a subband within a different BWP. Fig.13 It is shown that the DCI 1302 may indicate one or more timers 1306, a LP-WUR BWP in the current BWP 1304A, a new BWP 1304B, or a new LP-WUR BWP in the new BWP 1304C.

[0145] In one aspect, at 1606, the subband may be within the BWP, and the UE may switch to monitoring the BWP via the first radio in response to a first expiration of the first timer, wherein the switch from monitoring the BWP via the first radio to monitoring the subband via the second radio is based on a second expiration of the second timer. For example, Fig.11 The foregoing aspects are illustrated. In an example, 1606 can be performed by the LP wake-up component 198 .

[0146] In one aspect, at 1620, the subband may be within the BWP, wherein the occurrence of the at least one condition may include a first expiration of a first timer, and the UE may switch to monitoring the second BWP via the first radio in response to a second expiration of a second timer. For example, Fig.12 The foregoing aspects are illustrated. In an example, 1620 may be performed by the LP wake-up component 198 .

[0147] In one aspect, at 1622, the UE may switch to monitoring a second subband within a second BWP via a second radio in response to a third expiration of a third timer. Fig.12 The foregoing aspects are illustrated. In an example, 1622 may be performed by the LP wake-up component 198 .

[0148] In one aspect, at 1610, the UE may receive RRC signaling or MAC-CE signaling indicating at least one timer, wherein the occurrence of at least one condition may include expiration of at least one timer. Fig.14 At 1406 and 1408, it is shown that UE 1402 can receive RRC signaling and / or MAC-CE signaling indicating one or more timers. In another example, Fig.14The occurrence of the condition may include the expiration of a timer, as shown at 1412. In an example, 1610 may be performed by the LP wake-up component 198.

[0149] In one aspect, at least one condition may be based on the capabilities of the UE. For example, Fig.14 At 1412 it is shown that one or more conditions may be based on UE capabilities.

[0150] Fig.17 1700 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 1404, network entity 2002). The method may be associated with various advantages at the network node, such as increasing the reliability of communication with the UE. In an example, the method may be performed by the LP wake-up component 199.

[0151] At 1702, a network node sends a first configuration associated with a first radio of the UE associated with a first power consumption to a UE, wherein the first radio is associated with a BWP. Fig.14 At 1406, it is shown that the base station 1404 can send a BWP configuration (i.e., a first configuration) for the UE 1402. In another example, the first configuration can be the primary radio configuration 902. In another example, the first radio can be the primary radio 602. In an example, the BWP can be the first BWP 702 or the second BWP 704. In an example, 1702 can be performed by the LP wake-up component 199.

[0152] At 1704, the network node sends a second configuration associated with a second radio of the UE to the UE, wherein the second radio is associated with a second power consumption that is less than the first power consumption. Fig.14 At 1406, it is shown that the base station 1404 can send a LP-WUR BWP configuration (i.e., a second configuration) for the UE 1402. In another example, the second configuration can be the LP-WUR configuration 904. In another example, the second radio can be the LP-WUR 604. In an example, 1704 can be performed by the LP wake-up component 199.

[0153] At 1706, the network node sends a wake-up signal in a subband associated with a second radio of the UE. Fig.14 At 1426, it is shown that the base station 1404 can send a wake-up signal in a LP-WUR BWP (i.e., a sub-band). In another example, the wake-up signal can be the wake-up signal 612. In another example, the sub-band can be the first LP-WUR BWP 706 or the second LP-WUR BWP 708. In an example, 1706 can be performed by the LP wake-up component 199.

[0154] Fig.18 1800 is a flow chart of a wireless communication method. The method may be performed by a base station (e.g., base station 102, base station 310, base station 1404, network entity 2002). The method may be associated with various advantages at the base station, such as increasing the reliability of communication with the UE. In an example, the method (including various aspects described below) may be performed by the LP wake-up component 199.

[0155] At 1802, a network node sends a first configuration associated with a first radio of the UE associated with a first power consumption to a UE, wherein the first radio is associated with a BWP. Fig.14 At 1406, it is shown that the base station 1404 can send a BWP configuration (i.e., a first configuration) for the UE 1402. In another example, the first configuration can be the primary radio configuration 902. In another example, the first radio can be the primary radio 602. In an example, the BWP can be the first BWP 702 or the second BWP 704. In an example, 1802 can be performed by the LP wake-up component 199.

[0156] At 1804, the network node sends a second configuration associated with a second radio of the UE to the UE, wherein the second radio is associated with a second power consumption that is less than the first power consumption. Fig.14 At 1406, it is shown that the base station 1404 can send a LP-WUR BWP configuration (i.e., a second configuration) for the UE 1402. In another example, the second configuration can be the LP-WUR configuration 904. In another example, the second radio can be the LP-WUR 604. In an example, 1804 can be performed by the LP wake-up component 199.

[0157] At 1810, the network node sends a wake-up signal in a subband associated with a second radio of the UE. Fig.14 At 1426, it is shown that the base station 1404 can send a wake-up signal in a LP-WUR BWP (i.e., a sub-band). In another example, the wake-up signal can be the wake-up signal 612. In another example, the sub-band can be the first LP-WUR BWP 706 or the second LP-WUR BWP 708. In an example, 1810 can be performed by the LP wake-up component 199.

[0158] In one aspect, the sub-band may be within a BWP. For example, the sub-band may be the first LP-WUR BWP 706, and the BWP may be the first BWP 702, and Figure 7 It is shown that the first LP-WUR BWP 706 may be within the first BWP 702 .

[0159] In one aspect, the sub-band may be within a first BWP that is different from the BWP. For example, the sub-band may be the first LP-WUR BWP 706, the first BWP may be the first BWP 702, and the BWP may be the second BWP 704.

[0160] In one aspect, at 1806, the network node may send a DCI to the UE indicating at least one condition for switching from monitoring the BWP via the first radio to monitoring the subband via the second radio. For example, Fig.14 At 1416, it is shown that the base station 1404 can send a DCI for the UE 1402, wherein the DCI can indicate conditions for switching from monitoring the BWP via the first radio to monitoring the subband via the second radio. In an example, the DCI can be DCI 518, DCI 1008, and / or DCI 1302. In an example, 1806 can be performed by the LP wake-up component 199.

[0161] In one aspect, the at least one condition may include at least one of: expiration of at least one timer, or receipt of a DCI. Fig.14 It is shown at 1412 that the one or more conditions may include expiration of one or more timers and / or receipt of a DCI.

[0162] In one aspect, the first configuration may include a first one or more parameters, and the second configuration may include a second one or more parameters, wherein at least one of the second one or more parameters may be inherited from the first one or more parameters, wherein the first configuration and the second configuration are based on the capabilities reported by the UE. For example, the first one or more parameters may be primary radio parameters 916, and the second one or more parameters may be LP-WUR parameters 926. In addition, Fig. 9 It is shown that at least one of the LP-WUR parameters 926 may be inherited from the main radio parameters 916 .

[0163] In one aspect, at least one of the first one or more parameters or the second one or more parameters may indicate one or more of the following: a first characteristic of a wake-up monitoring opportunity for the second radio, a second characteristic of a reference signal for the second radio, a third characteristic of a synchronization signal for the second radio, a fourth characteristic of a wake-up signal for the second radio, a fifth characteristic of a preamble signal associated with the wake-up signal, a sixth characteristic associated with PDCCH transmission, a seventh characteristic associated with CSI or CSI-RS, an eighth characteristic associated with SRS, or a ninth characteristic associated with at least one of transmission or reception of data. For example, the main radio parameters 916 and / or the LP-WUR parameters 926 may indicate the first characteristic, the second characteristic, the third characteristic, the fourth characteristic, the fifth characteristic, the sixth characteristic, the seventh characteristic, the eighth characteristic, and / or the ninth characteristic.

[0164] In one aspect, at 1808, the network node may send RRC signaling or MAC-CE signaling indicating at least one timer. For example, Fig.14 At 1406 , it is shown that the base station 1404 can send RRC signaling and / or MAC-CE signaling indicating one or more timers. In an example, 1808 can be performed by the LP wake-up component 199 .

[0165] Fig.191900 is a diagram illustrating an example of a hardware implementation for an apparatus 1904. The apparatus 1904 may be a UE, a component of a UE, or may implement UE functionality. In some aspects, the apparatus 1904 may include a cellular baseband processor 1924 (also referred to as a modem) coupled to one or more transceivers 1922 (e.g., a cellular RF transceiver), which may include a transceiver 1923 having lower power consumption than one or more other transceivers. The cellular baseband processor 1924 may include on-chip memory 1924'. In some aspects, the apparatus 1904 may also include one or more subscriber identity module (SIM) cards 1920 and an application processor 1906 coupled to a secure digital (SD) card 1908 and a screen 1910. The application processor 1906 may include on-chip memory 1906'. In some aspects, the device 1904 may also include a Bluetooth module 1912, a WLAN module 1914, an SPS module 1916 (e.g., a GNSS module), one or more sensor modules 1918 (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 1926, a power source 1930, and / or a camera 1932. The Bluetooth module 1912, the WLAN module 1914, and the SPS module 1916 may include an on-chip transceiver (TRX) (or in some cases, only a receiver (RX)). The Bluetooth module 1912, the WLAN module 1914, and the SPS module 1916 may include their own dedicated antennas and / or communicate using an antenna 1980. The cellular baseband processor 1924 communicates with the UE 104 and / or with the RU associated with the network entity 1902 through the transceiver 1922 via one or more antennas 1980. The cellular baseband processor 1924 and the application processor 1906 may each include a computer-readable medium / memory 1924', 1906', respectively. The additional memory module 1926 may also be considered as a computer-readable medium / memory. Each computer-readable medium / memory 1924', 1906', 1926 may be non-transitory. The cellular baseband processor 1924 and the application processor 1906 are each responsible for general processing, including executing software stored on a computer-readable medium / memory. The software, when executed by the cellular baseband processor 1924 / application processor 1906, enables the cellular baseband processor 1924 / application processor 1906 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 1924 / application processor 1906 when executing the software.The cellular baseband processor 1924 / application processor 1906 may be a component of the UE 350 and may include the 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 1904 may be a processor chip (modem and / or application) and include only the cellular baseband processor 1924 and / or the application processor 1906, and in another configuration, the device 1904 may be the entire UE (e.g., see. Figure 3 350) and includes additional modules of device 1904.

[0166] As discussed above, the LP wake-up component 198 is configured to monitor the BWP via the first radio based on a first configuration. The LP wake-up component 198 is configured to switch to monitoring the sub-band based on a second configuration and via a second radio having lower power consumption than the first radio based on the occurrence of at least one condition. The LP wake-up component 198 is configured to wake up to receive communications in response to receiving a wake-up signal in the sub-band via the second radio. The LP wake-up component 198 is configured to switch to monitoring the sub-band via the first radio based on the occurrence of at least one condition before switching to monitoring the sub-band via the second radio and after monitoring the BWP via the first radio. The LP wake-up component 198 is configured to put the first radio into a sleep state after or concurrently with switching to monitoring the sub-band via the second radio. The LP wake-up component 198 is configured to transition the first radio from a sleep state to an active state. The LP wake-up component 198 is configured to receive the first configuration before monitoring the BWP via the first radio. The LP wake-up component 198 is configured to receive the second configuration before monitoring the BWP via the first radio. The LP wake-up component 198 is configured to receive a DCI, wherein at least one condition occurs when the DCI is received. The LP wake-up component 198 is configured to switch to monitoring the BWP via the first radio in response to a first expiration of a first timer, wherein the switch from monitoring the BWP via the first radio to monitoring the subband via the second radio is based on a second expiration of a second timer. The LP wake-up component 198 is configured to switch to monitoring the second BWP via the first radio in response to a second expiration of the second timer. The LP wake-up component 198 is configured to switch to monitoring the second subband within the second BWP via the second radio in response to a third expiration of a third timer. The LP wake-up component 198 is configured to receive RRC signaling or MAC-CE signaling indicating at least one timer, wherein the occurrence of at least one condition includes the expiration of at least one timer. The LP wake-up component 198 may be within the cellular baseband processor 1924, the application processor 1906, or both the cellular baseband processor 1924 and the application processor 1906. The LP wake-up component 198 can be one or more hardware components that are specifically configured to perform the process / algorithm, implemented by one or more processors configured to perform the process / algorithm, stored in a computer-readable medium for implementation by one or more processors, or some combination of the above. As shown, the device 1904 may include various components configured for various functions. In one configuration, the device 1904 (and in particular the cellular baseband processor 1924 and / or the application processor 1906) includes a component for monitoring the BWP via the first radio based on a first configuration.In one configuration, the device 1904 (and in particular the cellular baseband processor 1924 and / or the application processor 1906) includes means for switching to monitoring the subband based on a second configuration and via a second radio having lower power consumption than the first radio based on the occurrence of at least one condition. In one configuration, the device 1904 (and in particular the cellular baseband processor 1924 and / or the application processor 1906) includes means for waking up to receive communications in response to receiving a wake-up signal in the subband via the second radio. In one configuration, the device 1904 (and in particular the cellular baseband processor 1924 and / or the application processor 1906) includes means for switching to monitoring the subband via the first radio based on the occurrence of at least one condition before switching to monitoring the subband via the second radio and after monitoring the BWP via the first radio. In one configuration, the device 1904 (and in particular the cellular baseband processor 1924 and / or the application processor 1906) includes means for placing the first radio in a sleep state after or concurrently with switching to monitoring the subband via the second radio. In one configuration, the device 1904 (and in particular the cellular baseband processor 1924 and / or the application processor 1906) includes a component for transitioning the first radio from a sleep state to an active state. In one configuration, the device 1904 (and in particular the cellular baseband processor 1924 and / or the application processor 1906) includes a component for receiving a first configuration before monitoring the BWP via the first radio. In one configuration, the device 1904 (and in particular the cellular baseband processor 1924 and / or the application processor 1906) includes a component for receiving a second configuration before monitoring the BWP via the first radio. In one configuration, the device 1904 (and in particular the cellular baseband processor 1924 and / or the application processor 1906) includes a component for receiving a DCI, wherein at least one condition occurs when the DCI is received. In one configuration, the device 1904 (and in particular the cellular baseband processor 1924 and / or the application processor 1906) includes means for switching to monitoring the BWP via the first radio in response to expiration of a first timer, wherein the switching from monitoring the BWP via the first radio to monitoring the subband via the second radio is based on expiration of a second timer. In one configuration, the device 1904 (and in particular the cellular baseband processor 1924 and / or the application processor 1906) includes means for switching to monitoring the second BWP via the first radio in response to expiration of the second timer. In one configuration, the device 1904 (and in particular the cellular baseband processor 1924 and / or the application processor 1906) includes means for switching to monitoring the second subband within the second BWP via the second radio in response to expiration of a third timer.In one configuration, the device 1904 (and in particular the cellular baseband processor 1924 and / or the application processor 1906) includes means for receiving RRC signaling or MAC-CE signaling indicating at least one timer, wherein the occurrence of at least one condition includes the expiration of at least one timer. The means may be the LP wake-up component 198 of the device 1904 configured to perform the functions recited by the means. As described above, the device 1904 may include the TX processor 368, the RX processor 356, and the controller / processor 359. Thus, in one configuration, the means may be the TX processor 368, the RX processor 356, and / or the controller / processor 359 configured to perform the functions recited by the means.

[0167] Fig. 202000 is a diagram illustrating an example of a hardware implementation for a network entity 2002. The network entity 2002 may be a BS, a component of a BS, or may implement BS functionality. The network entity 2002 may include at least one of a CU 2010, a DU 2030, or a RU 2040. For example, depending on the layer functionality handled by the LP wake-up component 199, the network entity 2002 may include a CU 2010; both a CU 2010 and a DU 2030; each of the CU 2010, the DU 2030, and the RU 2040; the DU 2030; both the DU 2030 and the RU 2040; or the RU 2040. The CU 2010 may include a CU processor 2012. The CU processor 2012 may include an on-chip memory 2012'. In some aspects, the CU 2010 may also include an additional memory module 2014 and a communication interface 2018. CU 2010 communicates with DU 2030 via a midhaul link, such as an F1 interface. DU 2030 may include a DU processor 2032. DU processor 2032 may include on-chip memory 2032'. In some aspects, DU 2030 may also include an additional memory module 2034 and a communication interface 2038. DU 2030 communicates with RU 2040 via a fronthaul link. RU 2040 may include a RU processor 2042. RU processor 2042 may include on-chip memory 2042'. In some aspects, RU 2040 may also include an additional memory module 2044, one or more transceivers 2046, an antenna 2080, and a communication interface 2048. RU 2040 communicates with UE 104. On-chip memory 2012', 2032', 2042' and additional memory modules 2014, 2034, 2044 may each be considered a computer-readable medium / memory. Each computer readable medium / memory may be non-transitory. Each of the processors 2012, 2032, 2042 is responsible for general processing, including executing software stored on the computer readable medium / memory. The software, when executed by the corresponding processor, causes the processor to perform the various functions described above. The computer readable medium / memory may also be used to store data manipulated by the processor when executing the software.

[0168] As discussed above, the LP wake-up component 199 is configured to send, for the UE, a first configuration associated with a first radio of the UE associated with a first power consumption, wherein the first radio is associated with a BWP. The LP wake-up component 199 is configured to send, for the UE, a second configuration associated with a second radio of the UE, wherein the second radio is associated with a second power consumption less than the first power consumption. The LP wake-up component 199 is configured to send a wake-up signal in a subband associated with the second radio of the UE. The LP wake-up component 199 is configured to send, for the UE, a DCI indicating at least one condition for switching from monitoring the BWP via the first radio to monitoring the subband via the second radio. The LP wake-up component 199 is configured to send RRC signaling or MAC-CE signaling indicating at least one timer. The LP wake-up component 199 may be within one or more processors of one or more of the CU 2010, the DU 2030, and the RU 2040. The LP wake-up component 199 may be one or more hardware components specifically configured to perform the process / algorithm, implemented by one or more processors configured to perform the process / algorithm, stored in a computer-readable medium for implementation by one or more processors, or some combination of the foregoing. The network entity 2002 may include various components configured for various functions. In one configuration, the network entity 2002 includes a component for sending a first configuration associated with a first radio of the UE associated with a first power consumption, wherein the first radio is associated with a BWP, to the UE. In one configuration, the network entity 2002 includes a component for sending a second configuration associated with a second radio of the UE to the UE, wherein the second radio is associated with a second power consumption less than the first power consumption. In one configuration, the network entity 2002 includes a component for sending a wake-up signal in a subband associated with the second radio of the UE. In one configuration, the network entity 2002 includes a component for sending a DCI indicating at least one condition for switching from monitoring the BWP via the first radio to monitoring the subband via the second radio to the UE. In one configuration, the network entity 2002 includes means for sending RRC signaling or MAC-CE signaling indicating at least one timer. The means may be the LP wake-up component 199 of the network entity 2002 configured to perform the functions recited by the means. As described above, the network entity 2002 may include the TX processor 316, the RX processor 370, and the controller / processor 375. Thus, in one configuration, the means may be the TX processor 316, the RX processor 370, and / or the controller / processor 375 configured to perform the functions recited by the means.

[0169] As described above, the UE may be configured with a primary radio and an LP-WUR, wherein the primary radio may be associated with higher power consumption than the LP-WUR. The UE may put the primary radio into a sleep state and may monitor a wake-up signal in the BWP via the LP-WUR. However, monitoring the BWP for the wake-up signal may consume power. In addition, if the wake-up signal is to be received in a BWP different from the current BWP, the UE may have to perform a BWP switch, which may involve RF tuning, using different antennas, and / or ascertaining channel characteristics associated with different BWPs. Various techniques related to BWP and LP-WUR BWP are disclosed herein. In an example, the UE monitors the BWP via a first radio based on a first configuration. The UE switches to a second radio based on a second configuration and monitoring a subband via a second radio having lower power consumption than the first radio based on the occurrence of at least one condition. The UE wakes up to receive communication in response to receiving a wake-up signal in the subband via the second radio. Relative to switching to monitoring the subband via the second radio (i.e., LP-WUR), the UE may consume less power than monitoring the BWP. Furthermore, with respect to monitoring subbands, the UE may avoid BWP switching, avoid RF tuning or re-tuning, and may reuse antenna and / or channel characteristics.

[0170] 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.

[0171] 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 later be known 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..."

[0172] 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.

[0173] The following aspects are merely illustrative and may be combined with other aspects or teachings described herein without limitation.

[0174] Aspect 1 is a method for wireless communication at a user equipment (UE), the method comprising: monitoring a bandwidth part (BWP) via a first radio based on a first configuration; switching to monitoring a subband based on a second configuration and via a second radio having lower power consumption than the first radio based on the occurrence of at least one condition; and waking up to receive communication in response to receiving a wake-up signal in the subband via the second radio.

[0175] Aspect 2 is a method according to aspect 1, wherein the occurrence of the at least one condition includes expiration of a BWP inactivity timer.

[0176] Aspect 3 is a method according to any one of aspects 1 to 2, wherein the occurrence of the at least one condition comprises expiration of a timer, wherein the timer is different from a BWP inactivity timer.

[0177] Aspect 4 is a method according to aspect 3, wherein the timer is associated with a first duration and the BWP inactivity timer is associated with a second duration, wherein the first duration is less than the second duration.

[0178] Aspect 5 is a method according to any one of aspects 1 to 4, wherein the sub-band is within the BWP.

[0179] Aspect 6 is a method according to any one of aspects 1 to 4, wherein the sub-band is within a first BWP different from the BWP.

[0180] Aspect 7 is a method according to any one of aspects 1 to 6, the method further comprising: before switching to monitoring the sub-band via the second radio and after monitoring the BWP via the first radio, switching to monitoring the sub-band via the first radio.

[0181] Aspect 8 is a method according to aspect 7, further comprising placing the first radio into a sleep state after or concurrently with switching to monitoring the subband via the second radio.

[0182] Aspect 9 is the method of aspect 8, wherein waking up to receive the communication comprises transitioning the first radio from the sleep state to an active state.

[0183] Aspect 10 is a method according to any one of aspects 1 to 9, the method further comprising: receiving the first configuration before monitoring the BWP via the first radio; and receiving the second configuration before monitoring the BWP via the first radio.

[0184] Aspect 11 is a method according to aspect 10, wherein the first configuration includes first one or more parameters, and the second configuration includes second one or more parameters, wherein at least one of the second one or more parameters is inherited from the first one or more parameters, wherein the first configuration and the second configuration are based on capabilities reported by the UE.

[0185] Aspect 12 is a method according to aspect 11, wherein the first one or more parameters or at least one of the second one or more parameters indicates one or more of the following: a first characteristic of the wake-up monitoring timing of the second radio, a second characteristic of the reference signal of the second radio, a third characteristic of the synchronization signal of the second radio, a fourth characteristic of the wake-up signal of the second radio, a fifth characteristic of the preamble signal associated with the wake-up signal, a sixth characteristic associated with the physical downlink control channel (PDCCH) transmission, a seventh characteristic associated with the channel state information (CSI) or the channel state information reference signal (CSI-RS), an eighth characteristic associated with the sounding reference signal (SRS), or a ninth characteristic associated with at least one of the transmission or reception of data.

[0186] Aspect 13 is a method according to any one of Aspects 1 to 12, wherein a preamble code is used for synchronization, wherein the preamble code is associated with at least a first periodicity and a first bandwidth, the first periodicity and the first bandwidth are different from or equivalent to a second periodicity and a second bandwidth associated with the wake-up signal, wherein the length and configuration of the preamble code are different across different instances of the wake-up signal and are based in part on a low power synchronization signal configuration or a low power synchronization signal timing.

[0187] Aspect 14 is a method according to any one of aspects 1 to 13, the method also including: receiving downlink control information (DCI), wherein the at least one condition occurs when the DCI is received.

[0188] Aspect 15 is a method according to aspect 14, wherein the DCI indicates one or more of: at least one timer, the subband, a different BWP, or the subband within the different BWP.

[0189] Aspect 16 is a method according to any one of Aspects 1 to 15, wherein the subband is within the BWP, and the method further includes: switching to monitoring the BWP via the first radio in response to expiration of a first timer, wherein the switching from monitoring the BWP via the first radio to monitoring the subband via the second radio is based on expiration of a second timer.

[0190] Aspect 17 is a method according to any one of Aspects 1 to 15, wherein the subband is within the BWP, wherein the occurrence of the at least one condition includes expiration of a first timer, and the method further includes: switching to monitoring the second BWP via the first radio in response to expiration of a second timer; and switching to monitoring the second subband within the second BWP via the second radio in response to expiration of a third timer.

[0191] Aspect 18 is a method according to any one of Aspects 1 to 17, the method further comprising: receiving radio resource control (RRC) signaling or medium access control (MAC) control element (MAC-CE) signaling indicating at least one timer, wherein the occurrence of the at least one condition includes the expiration of the at least one timer.

[0192] Aspect 19 is a method according to any one of aspects 1 to 18, wherein the at least one condition is based on the capability of the UE.

[0193] Aspect 20 is an apparatus for wireless communication at a UE, the apparatus comprising a memory and at least one processor, the at least one processor being coupled to the memory and being configured to perform a method according to any one of Aspects 1 to 19 based at least in part on information stored in the memory.

[0194] Aspect 21 is an apparatus for wireless communication, the apparatus comprising means for performing a method according to any one of aspects 1 to 19.

[0195] Aspect 22 is the apparatus of aspect 20 or 21, the apparatus further comprising the first radio and the second radio, wherein the at least one processor is coupled to the first radio and the second radio.

[0196] Aspect 23 is a computer-readable medium (eg, a non-transitory computer-readable medium) comprising instructions which, when executed by an apparatus, cause the apparatus to perform a method according to any one of aspects 1 to 19.

[0197] Aspect 24 is a method for performing wireless communications at a network node, the method comprising: sending, to a user equipment (UE), a first configuration associated with a first radio of the UE associated with a first power consumption, wherein the first radio is associated with a bandwidth part (BWP); sending, to the UE, a second configuration associated with a second radio of the UE, wherein the second radio is associated with a second power consumption less than the first power consumption; and sending a wake-up signal in a subband associated with the second radio of the UE.

[0198] Aspect 25 is a method according to aspect 24, wherein the sub-band is within the BWP.

[0199] Aspect 26 is a method according to aspect 24, wherein the sub-band is within a first BWP different from the BWP.

[0200] Aspect 27 is a method according to any one of Aspects 24 to 26, the method further comprising: sending, to the UE, downlink control information (DCI) indicating at least one condition for switching from monitoring the BWP via the first radio to monitoring the subband via the second radio.

[0201] Aspect 28 is a method according to aspect 27, wherein the at least one condition comprises at least one of: expiration of at least one timer, or reception of the DCI.

[0202] Aspect 29 is a method according to any one of Aspects 24 to 28, wherein the first configuration includes first one or more parameters and the second configuration includes second one or more parameters, wherein at least one of the second one or more parameters is inherited from the first one or more parameters, wherein the first configuration and the second configuration are based on capabilities reported by the UE.

[0203] Aspect 30 is a method according to Aspect 29, wherein the first one or more parameters or at least one of the second one or more parameters indicates one or more of the following: a first characteristic of the wake-up monitoring timing of the second radio, a second characteristic of the reference signal of the second radio, a third characteristic of the synchronization signal of the second radio, a fourth characteristic of the wake-up signal of the second radio, a fifth characteristic of the preamble signal associated with the wake-up signal, a sixth characteristic associated with the physical downlink control channel (PDCCH) transmission, a seventh characteristic associated with the channel state information (CSI) or the channel state information reference signal (CSI-RS), an eighth characteristic associated with the sounding reference signal (SRS), or a ninth characteristic associated with at least one of the transmission or reception of data.

[0204] Aspect 31 is a method according to any one of aspects 24 to 30, the method further comprising: sending radio resource control (RRC) signaling or medium access control (MAC) control element (MAC-CE) signaling indicating at least one timer.

[0205] Aspect 32 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 being configured to perform a method according to any one of Aspects 24 to 31 based at least in part on information stored in the memory.

[0206] Aspect 33 is an apparatus for wireless communication, the apparatus comprising means for performing a method according to any one of aspects 24 to 31.

[0207] Aspect 34 is an apparatus according to aspect 32 or 33, wherein the apparatus further comprises at least one of a transceiver or an antenna coupled to the at least one processor, wherein the at least one processor is configured to send the first configuration, send the second configuration, and send the wake-up signal via at least one of the transceiver or the antenna.

[0208] Aspect 35 is a computer-readable medium (e.g., a non-transitory computer-readable medium), the computer-readable medium comprising instructions, which, when executed by an apparatus, cause the apparatus to perform a method according to any one of aspects 24 to 31.

Claims

1. An apparatus for wireless communication at a user equipment (UE), the apparatus comprising: Memory; and at least one processor coupled to the memory and based at least in part on the information stored in the memory, the at least one processor configured to: monitoring a bandwidth part (BWP) via the first radio based on the first configuration; switching, based on the occurrence of at least one condition, to monitoring the sub-band based on a second configuration and via a second radio having lower power consumption than the first radio; as well as Waking up to receive communications in response to receiving a wake-up signal in the sub-band via the second radio. 2 . The apparatus of claim 1 , wherein the occurrence of the at least one condition comprises expiration of a BWP inactivity timer. 3 . The apparatus of claim 1 , wherein the occurrence of the at least one condition comprises expiration of a timer, wherein the timer is different from a BWP inactivity timer. 4 . The apparatus of claim 3 , wherein the timer is associated with a first duration and the BWP inactivity timer is associated with a second duration, wherein the first duration is less than the second duration. The apparatus of claim 1 , wherein the sub-band is within the BWP. The apparatus of claim 1 , wherein the sub-band is within a first BWP different from the BWP.

7. The apparatus of claim 1 , wherein the at least one processor is further configured to: Switching to monitoring the sub-band via the first radio is performed based on the occurrence of the at least one condition before switching to monitoring the sub-band via the second radio and after monitoring the BWP via the first radio.

8. The apparatus of claim 7, wherein the at least one processor is further configured to: Placing the first radio in a sleep state subsequent to or concurrently with the switching to monitoring the sub-band via the second radio.

9. The apparatus of claim 8, wherein to wake up to receive the communication, the at least one processor is configured to: The first radio is transitioned from the sleep state to an active state.

10. The apparatus of claim 1, wherein the at least one processor is further configured to: receiving the first configuration prior to monitoring the BWP via the first radio; and The second configuration is received prior to monitoring the BWP via the first radio.

11. The apparatus of claim 10, wherein the first configuration comprises first one or more parameters and the second configuration comprises second one or more parameters, wherein at least one of the second one or more parameters is inherited from the first one or more parameters, wherein the first configuration and the second configuration are based on capabilities reported by the UE.

12. The apparatus of claim 11, wherein at least one of the first one or more parameters or the second one or more parameters indicates one or more of: a first characteristic of a wake-up monitoring opportunity of the second radio, a second characteristic of a reference signal of the second radio, a third characteristic of the synchronization signal of the second radio, a fourth characteristic of the wake-up signal of the second radio, a fifth characteristic of the preamble signal associated with the wake-up signal, A sixth characteristic associated with Physical Downlink Control Channel (PDCCH) transmission, A seventh characteristic associated with channel state information (CSI) or a channel state information reference signal (CSI-RS), An eighth characteristic associated with a sounding reference signal (SRS), or A ninth characteristic associated with at least one of the sending or receiving of data.

13. An apparatus according to claim 1, wherein a preamble is used for synchronization, wherein the preamble is associated with at least a first periodicity and a first bandwidth, the first periodicity and the first bandwidth are different from or equivalent to a second periodicity and a second bandwidth associated with the wake-up signal, wherein a length and a configuration of the preamble are different across different instances of the wake-up signal and are based in part on a low power synchronization signal configuration or a low power synchronization signal timing.

14. The apparatus of claim 1, wherein the at least one processor is further configured to: Downlink control information (DCI) is received, wherein the at least one condition occurs upon receipt of the DCI.

15. The apparatus of claim 14, wherein the DCI indicates one or more of: At least one timer, The sub-band, Different BWP, or The subbands within the different BWPs.

16. The apparatus of claim 1, wherein the subband is within the BWP, wherein the at least one processor is further configured to: Switching to monitoring the BWP via the first radio is responsive to a first expiration of a first timer, wherein the switching from monitoring the BWP via the first radio to monitoring the subband via the second radio is based on a second expiration of a second timer.

17. The apparatus of claim 1, wherein the subband is within the BWP, wherein the occurrence of the at least one condition comprises a first expiration of a first timer, wherein the at least one processor is further configured to: switching to monitoring a second BWP via the first radio in response to a second expiration of a second timer; and Switching to monitoring a second subband within the second BWP via the second radio is performed in response to a third expiration of the third timer.

18. The apparatus of claim 1, wherein the at least one processor is further configured to: Radio resource control (RRC) signaling or medium access control (MAC) control element (MAC-CE) signaling indicating at least one timer is received, wherein the occurrence of the at least one condition comprises expiration of the at least one timer.

19. The apparatus of claim 1, wherein the at least one condition is based on a capability of the UE.

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

21. A method of wireless communication at a user equipment (UE), the method comprising: monitoring a bandwidth part (BWP) via the first radio based on the first configuration; switching, based on the occurrence of at least one condition, to monitoring the sub-band based on a second configuration and via a second radio having lower power consumption than the first radio; as well as Waking up to receive communications in response to receiving a wake-up signal in the sub-band via the second radio.

22. An apparatus for wireless communication at a network node, the apparatus comprising: Memory; and at least one processor coupled to the memory and based at least in part on the information stored in the memory, the at least one processor configured to: transmitting, for a user equipment (UE), a first configuration associated with a first radio of the UE associated with a first power consumption, wherein the first radio is associated with a bandwidth part (BWP); sending, for the UE, a second configuration associated with a second radio of the UE, wherein the second radio is associated with a second power consumption that is less than the first power consumption; as well as A wake-up signal is sent in a subband associated with the second radio of the UE.

23. The apparatus of claim 22, wherein the sub-band is within the BWP.

24. The apparatus of claim 22, wherein the sub-band is within a first BWP different from the BWP.

25. The apparatus of claim 22, wherein the at least one processor is further configured to: Downlink control information (DCI) indicating at least one condition for switching from monitoring the BWP via the first radio to monitoring the subband via the second radio is transmitted to the UE.

26. The apparatus of claim 25, wherein the at least one condition comprises at least one of: At least one timer expires, or Receipt of the DCI.

27. The apparatus of claim 22, wherein the first configuration comprises first one or more parameters and the second configuration comprises second one or more parameters, wherein at least one of the second one or more parameters is inherited from the first one or more parameters, wherein the first configuration and the second configuration are based on capabilities reported by the UE.

28. The apparatus of claim 22, wherein the at least one processor is further configured to: Radio resource control (RRC) signaling or medium access control (MAC) control element (MAC-CE) signaling indicating at least one timer is sent.

29. The apparatus according to claim 22, further comprising: At least one of a transceiver or an antenna coupled to the at least one processor, wherein the at least one processor is configured to transmit the first configuration, transmit the second configuration, and transmit the wake-up signal via at least one of the transceiver or the antenna.

30. A method for wireless communication at a network node, the method comprising: transmitting, for a user equipment (UE), a first configuration associated with a first radio of the UE associated with a first power consumption, wherein the first radio is associated with a bandwidth part (BWP); sending, for the UE, a second configuration associated with a second radio of the UE, wherein the second radio is associated with a second power consumption that is less than the first power consumption; as well as A wake-up signal is sent in a subband associated with the second radio of the UE.

Images