CN117063513A - Radio resource management measurement relaxation for resident user equipment - Google Patents

Radio resource management measurement relaxation for resident user equipment Download PDF

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Publication number
CN117063513A
CN117063513A CN202280022743.1A CN202280022743A CN117063513A CN 117063513 A CN117063513 A CN 117063513A CN 202280022743 A CN202280022743 A CN 202280022743A CN 117063513 A CN117063513 A CN 117063513A
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configuration
rrm
rrm measurement
relaxation
measurement relaxation
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Chinese (zh)
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L·何
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Qualcomm Inc
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Qualcomm Inc
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Priority claimed from US17/651,171 external-priority patent/US20220312243A1/en
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Priority claimed from PCT/US2022/070686 external-priority patent/WO2022204636A1/en
Publication of CN117063513A publication Critical patent/CN117063513A/en
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Abstract

Various aspects of the present disclosure relate generally to wireless communications. In some aspects, a User Equipment (UE) may receive a configuration associated with Radio Resource Management (RRM) measurement relaxation from a network entity based at least in part on the UE being stationary. The UE may perform RRM measurements based at least in part on the configuration associated with RRM measurement relaxation. Numerous other aspects are described.

Description

Radio resource management measurement relaxation for resident user equipment
Cross Reference to Related Applications
This patent application claims priority from U.S. provisional patent application No.63/166,514 entitled "RADIO RESOURCE MANAGEMENT MEASUREMENT RELAXATION FOR STATIONARY USER EQUIPMENTS (radio resource management measurement relaxation for resident user equipment)" filed on month 3, 26 of 2021, and U.S. non-provisional patent application No.17/651,171 entitled "RADIO RESOURCE MANAGEMENT MEASUREMENT RELAXATION FOR STATIONARY USER EQUIPMENTS (radio resource management measurement relaxation for resident user equipment)" filed on month 15 of 2022, which are hereby expressly incorporated herein by reference.
FIELD OF THE DISCLOSURE
Aspects of the present disclosure relate generally to wireless communications and to techniques and apparatus for Radio Resource Management (RRM) measurement relaxation for a resident User Equipment (UE).
Background
Wireless communication systems are widely deployed to provide various telecommunication services such as telephony, video, data, messaging, and broadcast. A typical wireless communication system may employ multiple-access techniques capable of supporting communication with multiple users by sharing available system resources (e.g., bandwidth, transmit power, etc.). Examples of such multiple-access techniques 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, time division synchronous code division multiple access (TD-SCDMA) systems, and Long Term Evolution (LTE). LTE/LTE-advanced is an enhanced set of Universal Mobile Telecommunications System (UMTS) mobility guidelines promulgated by the third generation partnership project (3 GPP).
A wireless network may include one or more base stations supporting communication for one or more User Equipment (UEs). The UE may communicate with the base station via downlink and uplink communications. "downlink" (or "DL") refers to the communication link from a base station to a UE, and "uplink" (or "UL") refers to the communication link from a UE to a base station.
The above multiple access techniques have been adopted in various telecommunications guidelines to provide a common protocol that enables different UEs to communicate at the urban, national, regional and/or global level. The New Radio (NR), which may be referred to as 5G, is an enhanced set of LTE mobile guidelines promulgated by 3 GPP. NR is designed to better support mobile broadband internet access by using Orthogonal Frequency Division Multiplexing (OFDM) with Cyclic Prefix (CP) on the downlink (CP-OFDM), CP-OFDM and/or single carrier frequency division multiplexing (SC-FDM) on the uplink (also known as discrete fourier transform spread OFDM (DFT-s-OFDM)), and supporting beamforming, multiple Input Multiple Output (MIMO) antenna technology and carrier aggregation to improve spectral efficiency, reduce cost, improve service, utilize new spectrum, and integrate better with other open guidelines. As the demand for mobile broadband access continues to grow, further improvements to LTE, NR and other radio access technologies remain useful.
SUMMARY
In some aspects, a wireless communication method performed by a User Equipment (UE) includes: receive a configuration associated with Radio Resource Management (RRM) measurement relaxation from a network entity based at least in part on the UE being stationary; and performing RRM measurements based at least in part on the configuration associated with RRM measurement relaxation.
In some aspects, a UE for wireless communication, comprises: a memory and one or more processors coupled to the memory configured to: receive a configuration associated with RRM measurement relaxation from a network entity based at least in part on the UE being stationary; and performing RRM measurements based at least in part on the configuration associated with RRM measurement relaxation.
In some aspects, a non-transitory computer-readable medium storing a set of instructions for wireless communication includes one or more instructions that, when executed by one or more processors of a UE, cause the UE to: receive a configuration associated with RRM measurement relaxation from a network entity based at least in part on the UE being stationary; and performing RRM measurements based at least in part on the configuration associated with RRM measurement relaxation.
In some aspects, an apparatus for wireless communication comprises: means for receiving a configuration associated with RRM measurement relaxation from a network entity based at least in part on the device being stationary; and means for performing RRM measurements based at least in part on the configuration associated with RRM measurement relaxation.
Aspects generally include a method, apparatus, system, computer program product, non-transitory computer readable medium, user equipment, network entity, base station, wireless communication device, and/or processing system as substantially described herein with reference to and as illustrated in the accompanying drawings and description.
The foregoing has outlined rather broadly the features and technical advantages of examples in accordance with the present disclosure in order that the detailed description that follows may be better understood. Additional features and advantages will be described hereinafter. The disclosed concepts and specific examples may be readily utilized as a basis for modifying or designing other structures for carrying out the same purposes of the present disclosure. Such equivalent constructions do not depart from the scope of the appended claims. The features of the concepts disclosed herein, both as to their organization and method of operation, together with associated advantages, will be better understood from the following description when considered in connection with the accompanying drawings. Each of the figures is provided for the purpose of illustration and description, and is not intended to be limiting of the claims.
While aspects are described in this disclosure by way of illustration of some examples, those skilled in the art will appreciate that such aspects may be implemented in many different arrangements and scenarios. The techniques described herein may be implemented using different platform types, devices, systems, shapes, sizes, and/or packaging arrangements. For example, some aspects may be implemented via integrated chip embodiments or other non-module component based devices (e.g., end user devices, vehicles, communication devices, computing devices, industrial equipment, retail/shopping devices, medical devices, and/or artificial intelligence devices). Aspects may be implemented in chip-level components, module components, non-chip-level components, device-level components, and/or system-level components. Devices incorporating the described aspects and features may include additional components and features for achieving and practicing the claimed and described aspects. For example, the transmission and reception of wireless signals may include one or more components (e.g., hardware components including antennas, radio Frequency (RF) chains, power amplifiers, modulators, buffers, processors, interleavers, adders, and/or summers) for analog and digital purposes. Aspects described herein are intended to be practiced in a wide variety of devices, components, systems, distributed arrangements, and/or end user devices of various sizes, shapes, and configurations.
Brief Description of Drawings
So that the manner in which the above recited features of the present disclosure can be understood in detail, a more particular description of the invention, briefly summarized above, may be had by reference to aspects, some of which are illustrated in the appended drawings. It is to be noted, however, that the appended drawings illustrate only certain typical aspects of this disclosure and are therefore not to be considered limiting of its scope, for the description may admit to other equally effective aspects. The same reference numbers in different drawings may identify the same or similar elements.
Fig. 1 is a diagram illustrating an example of a wireless network according to the present disclosure.
Fig. 2 is a diagram illustrating an example in which a base station is in communication with a User Equipment (UE) in a wireless network according to the present disclosure.
Fig. 3 is a diagram illustrating an example associated with Radio Resource Management (RRM) measurement relaxation for a camped UE according to the present disclosure.
Fig. 4 is a diagram illustrating an example process associated with RRM measurement relaxation for a camped UE according to the present disclosure.
Fig. 5 is a block diagram of an example apparatus for wireless communication according to the present disclosure.
Detailed Description
Various aspects of the disclosure are described more fully below with reference to the accompanying drawings. This disclosure may, however, be embodied in many different forms and should not be construed as limited to any specific structure or function presented throughout this disclosure. Rather, these aspects are provided so that this disclosure will be thorough and complete, and will fully convey the scope of the disclosure to those skilled in the art. Those skilled in the art will appreciate that the scope of the disclosure is intended to cover any aspect of the disclosure disclosed, whether implemented independently or combined with any other aspect of the disclosure. For example, an apparatus may be implemented or a method practiced using any number of the aspects set forth herein. In addition, the scope of the present disclosure is intended to cover such an apparatus or method that is practiced using such structure, functionality, or both as a complement to, or in addition to, the various aspects of the present disclosure set forth herein. It should be understood that any aspect of the disclosure disclosed herein may be embodied by one or more elements of the claims.
Several aspects of a telecommunications system will now be presented with reference to various apparatus and techniques. These devices and techniques will be described in the following detailed description and illustrated in the accompanying drawings by various blocks, modules, components, circuits, steps, processes, algorithms, etc. (collectively referred to as "elements"). These elements may be implemented using hardware, software, or a combination thereof. Whether such elements are implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system.
Although aspects may be described herein using terms commonly associated with 5G or New Radio (NR) Radio Access Technologies (RATs), aspects of the present disclosure may be applied to other RATs, such as 3G RATs, 4G RATs, and/or RATs after 5G (e.g., 6G).
Fig. 1 is a diagram illustrating an example of a wireless network 100 according to the present disclosure. The wireless network 100 may be a 5G (e.g., NR) network and/or a 4G (e.g., long Term Evolution (LTE)) network, etc., or may include elements thereof. Wireless network 100 may include one or more base stations 110 (shown as BS110a, BS110b, BS110c, and BS110 d), one or more User Equipments (UEs) 120 (shown as UE 120a, UE 120b, UE 120c, UE 120d, and UE 120 e), and/or other network entities. Base station 110 is the entity in communication with UE 120. Base stations 110 (sometimes referred to as BSs) may include, for example, NR base stations, LTE base stations, node BS, enbs (e.g., in 4G), gnbs (e.g., in 5G), access points, and/or Transmission and Reception Points (TRPs). Each base station 110 may provide communication coverage for a particular geographic area. In the third generation partnership project (3 GPP), the term "cell" can refer to a coverage area of a base station 110 and/or a base station subsystem serving the coverage area, depending on the context in which the term is used.
Base station 110 may provide communication coverage for a macrocell, a picocell, a femtocell, and/or another type of cell. A macro cell may cover a relatively large geographic area (e.g., several kilometers in radius) and may allow unrestricted access by UEs 120 with service subscription. A picocell may cover a relatively small geographic area and may allow unrestricted access by UEs 120 with service subscription. A femto cell may cover a relatively small geographic area (e.g., a residence) and may allow restricted access by UEs 120 associated with the femto cell (e.g., UEs 120 in a Closed Subscriber Group (CSG)). The base station 110 for a macro cell may be referred to as a macro base station. The base station 110 for a pico cell may be referred to as a pico base station. The base station 110 for a femto cell may be referred to as a femto base station or a home base station. In the example shown in fig. 1, BS110a may be a macro base station for macro cell 102a, BS110b may be a pico base station for pico cell 102b, and BS110c may be a femto base station for femto cell 102 c. A base station may support one or more (e.g., three) cells.
In some aspects, the term "base station" (e.g., base station 110) or "network entity" may refer to an aggregated base station, a decomposed base station, an Integrated Access and Backhaul (IAB) node, a relay node, and/or one or more components thereof. For example, in some aspects, a "base station" or "network entity" may refer to a Central Unit (CU), a Distributed Unit (DU), a Radio Unit (RU), a near real-time (near RT) RAN Intelligent Controller (RIC), or a non-real-time (non-RT) RIC, or a combination thereof. In some aspects, the term "base station" or "network entity" may refer to a device configured to perform one or more functions, such as those described herein in connection with base station 110. In some aspects, the term "base station" or "network entity" may refer to a plurality of devices configured to perform one or more functions. For example, in some distributed systems, each of several different devices (which may be located in the same geographic location or different geographic locations) may be configured to perform, or repeat the performance of, at least a portion of the functionality, and the term "base station" or "network entity" may refer to any one or more of these different devices. In some aspects, the term "base station" or "network entity" may refer to one or more virtual base stations and/or one or more virtual base station functions. For example, in some aspects, two or more base station functions may be instantiated on a single device. In some aspects, the term "base station" or "network entity" may refer to one of the base station functions, but not the other. In this way, a single device may include more than one base station.
In some examples, a cell may not necessarily be stationary, and the geographic area of the cell may move according to the location of a mobile base station 110 (e.g., a mobile base station). In some examples, base stations 110 may be interconnected with each other and/or to one or more other base stations 110 or network nodes (not shown) in wireless network 100 through various types of backhaul interfaces, such as direct physical connections or virtual networks, using any suitable transport network.
The wireless network 100 may include one or more relay stations. A relay station is an entity that can receive a transmission of data from an upstream station (e.g., base station 110 or UE 120) and send the transmission of the data to a downstream station (e.g., UE 120 or base station 110). The relay station may be a UE 120 capable of relaying transmissions for other UEs 120. In the example shown in fig. 1, BS110d (e.g., a relay base station) may communicate with BS110a (e.g., a macro base station) and UE 120d to facilitate communications between BS110a and UE 120 d. The base station 110 relaying communications may be referred to as a relay station, a relay base station, a relay, and so on.
The wireless network 100 may be a heterogeneous network including different types of base stations 110 (such as macro base stations, pico base stations, femto base stations, or relay base stations, etc.). These different types of base stations 110 may have different transmit power levels, different coverage areas, and/or different effects on interference in the wireless network 100. For example, macro base stations may have a high transmit power level (e.g., 5 to 40 watts), while pico base stations, femto base stations, and relay base stations may have a lower transmit power level (e.g., 0.1 to 2 watts).
The network controller 130 may be coupled or in communication with a set of base stations 110 and may provide coordination and control of these base stations 110. The network controller 130 may communicate with the base stations 110 via backhaul communication links. Base stations 110 may communicate with each other directly or indirectly via wireless or wired backhaul communication links.
The UEs 120 may be dispersed throughout the wireless network 100, and each UE 120 may be stationary or mobile. UE 120 may include, for example, an access terminal, a mobile station, and/or a subscriber unit. UE 120 may be a cellular telephone (e.g., a smart phone), a Personal Digital Assistant (PDA), a wireless modem, a wireless communication device, a handheld device, a laptop computer, a cordless phone, a Wireless Local Loop (WLL) station, a tablet device, a camera, a gaming device, a netbook, a smartbook, a super-book, a medical device, a biometric device, a wearable device (e.g., a smartwatch, smart clothing, smart glasses, a smartwristband, smart jewelry (e.g., a smartring or smartband)), an entertainment device (e.g., a music device, a video device, and/or a satellite radio), an in-vehicle component or sensor, a smart meter/sensor, industrial manufacturing equipment, a global positioning system device, or any other suitable device configured to communicate via a wireless medium.
Some UEs 120 may be considered Machine Type Communication (MTC) UEs, or evolved or enhanced machine type communication (eMTC) UEs. MTC UEs and/or eMTC UEs may include, for example, robots, drones, remote devices, sensors, gauges, monitors, and/or location tags, which may communicate with a base station, another device (e.g., a remote device), or some other entity. Some UEs 120 may be considered internet of things (IoT) devices and/or may be implemented as NB-IoT (narrowband IoT) devices. Some UEs 120 may be considered client devices. UE 120 may be included within a housing that houses components of UE 120, such as processor components and/or memory components. In some examples, the processor component and the memory component may be coupled together. For example, a processor component (e.g., one or more processors) and a memory component (e.g., memory) may be operatively coupled, communicatively coupled, electronically coupled, and/or electrically coupled.
In general, any number of wireless networks 100 may be deployed in a given geographic area. Each wireless network 100 may support a particular RAT and may operate on one or more frequencies. The RAT may be referred to as a radio technology, an air interface, etc. The frequencies may be referred to as carriers, frequency channels, etc. Each frequency may support a single RAT in a given geographic area to avoid interference between wireless networks of different RATs. In some cases, NR or 5G RAT networks may be deployed.
In some examples, two or more UEs 120 (e.g., shown as UE 120a and UE 120 e) may communicate directly (e.g., without using base station 110 as an intermediary to communicate with each other) using one or more side link channels. For example, UE 120 may communicate using peer-to-peer (P2P) communication, device-to-device (D2D) communication, a vehicle-to-vehicle (V2X) protocol (e.g., which may include a vehicle-to-vehicle (V2V) protocol, a vehicle-to-infrastructure (V2I) protocol, or a vehicle-to-pedestrian (V2P) protocol), and/or a mesh network. In such examples, UE 120 may perform scheduling operations, resource selection operations, and/or other operations described elsewhere herein as being performed by base station 110.
Devices of the wireless network 100 may communicate using electromagnetic spectrum that may be subdivided into various categories, bands, channels, etc., by frequency or wavelength. For example, devices of wireless network 100 may communicate using one or more operating frequency bands. In 5G NR, two initial operating bands have been identified as frequency range designated FR1 (410 MHz-7.125 GHz) and FR2 (24.25 GHz-52.6 GHz). It should be appreciated that although a portion of FR1 is greater than 6GHz, FR1 is commonly (interchangeably) referred to as the "sub-6 GHz" band in various documents and articles. Similar naming problems sometimes occur with respect to FR2, which is commonly (interchangeably) referred to as the "millimeter wave" band in various documents and articles, although it is different from the Extremely High Frequency (EHF) band (30 GHz-300 GHz) identified by the International Telecommunications Union (ITU) as the "millimeter wave" band.
The frequency between FR1 and FR2 is commonly referred to as the mid-band frequency. Recent 5G NR studies have identified the operating band of these mid-band frequencies as frequency range designation FR3 (7.125 GHz-24.25 GHz). The frequency bands falling within FR3 may inherit FR1 characteristics and/or FR2 characteristics and thus may effectively extend the characteristics of FR1 and/or FR2 into mid-band frequencies. Additionally, higher frequency bands are currently being explored to extend 5G NR operation above 52.6 GHz. For example, three higher operating bands have been identified as frequency range designation FR4a or FR4-1 (52.6 GHz-71 GHz), FR4 (52.6 GHz-114.25 GHz) and FR5 (114.25 GHz-300 GHz). Each of these higher frequency bands falls within the EHF frequency band.
In view of the above examples, unless specifically stated otherwise, it should be understood that, if used herein, the term sub-6 GHz and the like may broadly represent frequencies that may be less than 6GHz, may be within FR1, or may include mid-band frequencies. Furthermore, unless specifically stated otherwise, it should be understood that the term "millimeter wave" or the like, if used herein, may broadly mean frequencies that may include mid-band frequencies, may be within FR2, FR4-a, or FR4-1 and/or FR5, or may be within the EHF band. It is contemplated that the frequencies included in these operating bands (e.g., FR1, FR2, FR3, FR4-a, FR4-1, and/or FR 5) may be modified, and that the techniques described herein are applicable to those modified frequency ranges.
As indicated above, fig. 1 is provided as an example. Other examples may differ from the example described with respect to fig. 1.
Fig. 2 is a diagram illustrating an example 200 in which a base station 110 is in communication with a UE 120 in a wireless network 100 according to the present disclosure. Base station 110 may be equipped with a set of antennas 234a through 234T, such as T antennas (T.gtoreq.1). UE 120 may be equipped with a set of antennas 252a through 252R, such as R antennas (r≡1).
At base station 110, transmit processor 220 may receive data intended for UE 120 (or a group of UEs 120) from data source 212. Transmit processor 220 may select one or more Modulation and Coding Schemes (MCSs) for UE 120 based at least in part on one or more Channel Quality Indicators (CQIs) received from UE 120. Base station 110 may process (e.g., encode and modulate) data for UE 120 based at least in part on the MCS(s) selected for UE 120 and may provide data symbols to UE 120. Transmit processor 220 may process system information (e.g., for semi-Static Resource Partitioning Information (SRPI)) and control information (e.g., CQI requests, grants, and/or upper layer signaling) and provide overhead symbols and control symbols. The transmit processor 220 may generate reference symbols for reference signals (e.g., cell-specific reference signals (CRS) or demodulation reference signals (DMRS)) and synchronization signals (e.g., primary Synchronization Signals (PSS) or Secondary Synchronization Signals (SSS)). A Transmit (TX) multiple-input multiple-output (MIMO) processor 230 may perform spatial processing (e.g., precoding) on the data symbols, control symbols, overhead symbols, and/or reference symbols, if applicable, and may provide a set of output symbol streams (e.g., T output symbol streams) to a corresponding set of modems 232 (e.g., T modulators) (shown as modems 232a through 232T). For example, each output symbol stream may be provided to a modulator component (shown as MOD) of modem 232. Each modem 232 may process a respective output symbol stream (e.g., for OFDM) using a respective modulator component to obtain an output sample stream. Each modem 232 may further process (e.g., convert to analog, amplify, filter, and/or upconvert) the output sample stream using a corresponding modulator component to obtain a downlink signal. Modems 232a through 232T may transmit a set of downlink signals (e.g., T downlink signals) via a corresponding set of antennas 234 (e.g., T antennas) (shown as antennas 234a through 234T).
At UE 120, a set of antennas 252 (shown as antennas 252a through 252R) may receive the downlink signals from base station 110 and/or other base stations 110 and a set of received signals (e.g., R received signals) may be provided to a set of modems 254 (e.g., R modems) (shown as modems 254a through 254R). For example, each received signal may be provided to a demodulator component (shown as DEMOD) of modem 254. Each modem 254 may condition (e.g., filter, amplify, downconvert, and/or digitize) a received signal using a corresponding demodulator component to obtain input samples. Each modem 254 may use a demodulator assembly to further process the input samples (e.g., for OFDM) to obtain received symbols. MIMO detector 256 may obtain the received symbols from modem 254, may perform MIMO detection on the received symbols, if applicable, and may provide detected symbols. Receive processor 258 may process (e.g., demodulate and decode) the detected symbols, may provide decoded data for UE 120 to data sink 260, and may provide decoded control information and system information to controller/processor 280. The term "controller/processor" may refer to one or more controllers, one or more processors, or a combination thereof. The channel processor may determine a Reference Signal Received Power (RSRP) parameter, a Received Signal Strength Indicator (RSSI) parameter, a Reference Signal Received Quality (RSRQ) parameter, and/or a CQI parameter, among others. In some examples, one or more components of UE 120 may be included in housing 284.
The network controller 130 may include a communication unit 294, a controller/processor 290, and a memory 292. The network controller 130 may comprise, for example, one or more devices in a core network. The network controller 130 may communicate with the base station 110 via a communication unit 294.
The one or more antennas (e.g., antennas 234a through 234t and/or antennas 252a through 252 r) may include or be included in one or more antenna panels, one or more antenna groups, one or more sets of antenna elements, and/or one or more antenna arrays, etc. The antenna panel, antenna group, antenna element set, and/or antenna array may include one or more antenna elements (within a single housing or multiple housings), a coplanar antenna element set, a non-coplanar antenna element set, and/or one or more antenna elements coupled to one or more transmission and/or reception components (such as one or more components of fig. 2).
On the uplink, at UE 120, transmit processor 264 may receive and process data from data source 262 and control information from controller/processor 280 (e.g., for reports including RSRP, RSSI, RSRQ, and/or CQI). Transmit processor 264 may generate reference symbols for one or more reference signals. The symbols from transmit processor 264 may be precoded by a TX MIMO processor 266 if applicable, further processed by modem 254 (e.g., for DFT-s-OFDM or CP-OFDM), and transmitted to base station 110. In some examples, modem 254 of UE 120 may include a modulator and a demodulator. In some examples, UE 120 includes a transceiver. The transceiver may include any combination of antenna(s) 252, modem(s) 254, MIMO detector 256, receive processor 258, transmit processor 264, and/or TX MIMO processor 266. The transceiver may be used by a processor (e.g., controller/processor 280) and memory 282 to perform aspects of any of the methods described herein (e.g., with reference to fig. 3-4).
At base station 110, uplink signals from UE 120 and/or other UEs may be received by antennas 234, processed by modems 232 (e.g., the demodulator components of modems 232, shown as DEMODs), detected by MIMO detector 236 if applicable, and further processed by receive processor 238 to obtain decoded data and control information sent by UE 120. The receive processor 238 may provide the decoded data to a data sink 239 and the decoded control information to a controller/processor 240. The base station 110 may include a communication unit 244 and may communicate with the network controller 130 via the communication unit 244. Base station 110 may include a scheduler 246 to schedule one or more UEs 120 for downlink and/or uplink communications. In some examples, modem 232 of base station 110 may include a modulator and a demodulator. In some examples, base station 110 includes a transceiver. The transceiver may include any combination of antenna(s) 234, modem(s) 232, MIMO detector 236, receive processor 238, transmit processor 220, and/or TX MIMO processor 230. The transceiver may be used by a processor (e.g., controller/processor 240) and memory 242 to perform aspects of any of the methods described herein (e.g., with reference to fig. 3-4).
The controller/processor 240 of the base station 110, the controller/processor 280 of the UE 120, and/or any other component(s) of fig. 2 may perform one or more techniques associated with Radio Resource Management (RRM) measurement relaxation for a resident UE, as described in more detail elsewhere herein. For example, controller/processor 240 of base station 110, controller/processor 280 of UE 120, and/or any other component(s) of fig. 2 may perform or direct operations of process 300 of fig. 3, for example, and/or other processes as described herein. Memory 242 and memory 282 may store data and program codes for base station 110 and UE 120, respectively. In some examples, memory 242 and/or memory 282 may include a non-transitory computer-readable medium storing one or more instructions (e.g., code and/or program code) for wireless communication. For example, the one or more instructions, when executed by one or more processors of base station 110 and/or UE 120 (e.g., directly, or after compilation, conversion, and/or interpretation), may cause the one or more processors, UE 120, and/or base station 110 to perform or direct operations such as process 300 of fig. 3 and/or other processes as described herein. In some examples, executing instructions may include executing instructions, converting instructions, compiling instructions, and/or interpreting instructions, among others.
In some aspects, a UE (e.g., UE 120) includes: means for receiving a configuration associated with RRM measurement relaxation from a network entity based at least in part on the UE being stationary; and/or means for performing RRM measurements based at least in part on the configuration associated with RRM measurement relaxation. Means for a UE to perform the operations described herein may include, for example, one or more of the antennas 252, the demodulator 254, the MIMO detector 256, the receive processor 258, the transmit processor 264, the TX MIMO processor 266, the modulator 254, the controller/processor 280, or the memory 282.
Although the blocks in fig. 2 are illustrated as distinct components, the functionality described above with respect to the blocks may be implemented in a single hardware, software, or combination of components or a combination of various components. For example, the functions described with respect to transmit processor 264, receive processor 258, and/or TX MIMO processor 266 may be performed by controller/processor 280 or under the control of controller/processor 280.
As indicated above, fig. 2 is provided as an example. Other examples may differ from the example described with respect to fig. 2.
Two trigger criteria may be defined for RRM relaxation, which may involve reducing the interval between RRM measurements to increase power savings at the UE. The first trigger criteria may relate to low mobility. A UE may be considered low mobility when the difference between the reference signal level (e.g., srxlev ref) and the serving cell received signal level (e.g., srxlev) is less than a delta value (e.g., SSearchDeltaP) over a period of time (e.g., TSearchDeltaP). The serving cell received signal level may indicate the radio link quality of the UE. The second trigger criteria may relate to not being at a cell edge (e.g., the UE is not located at the cell edge). A UE may be considered not to be at the cell edge when the serving cell received signal level (e.g., srxlev) is greater than a first power threshold (e.g., ssearchthreshold) and the signal quality (e.g., square) is greater than a second power threshold (e.g., ssearchthreshold q) if configured.
The network entity (e.g., a base station) may configure the first trigger criteria and/or the second trigger criteria for the UE to determine whether to trigger RRM relaxation. When both the first trigger criteria and the second trigger criteria are configured for the UE, the network entity may further configure whether the UE needs to satisfy only one trigger criteria or both trigger criteria to perform RRM relaxation. In other words, the network entity may further configure whether the UE is low mobility and/or not located at the cell edge in order to relax RRM measurements.
RRM relaxation may include two types of RRM relaxation techniques, depending on the trigger criteria that the UE satisfies. The first type of RRM relaxation may involve increasing the interval (or scaling factor) between RRM measurements, which may result in power savings at the UE. The second type of RRM relaxation may involve temporarily stopping RRM measurements (e.g., for one hour) to save power at the UE. Depending on the trigger criteria that the UE meets, the UE may apply either a first type of RRM relaxation or a second type of RRM relaxation.
When the first trigger criteria for only low mobility is configured, the first type of RRM relaxation (e.g., increasing the interval or scaling factor between RRM measurements) may be applied to RRM measurements including intra-frequency measurements, inter-frequency measurements with the same or lower priority, and/or inter-RAT measurements. When only the second trigger criteria for not being at the cell edge are configured, the first type of RRM relaxation may be applied to RRM measurements including intra-frequency measurements, inter-frequency measurements with the same or lower priority, and/or inter-RAT measurements.
When the first trigger criteria for only low mobility is configured, the second type of RRM relaxation (e.g., stopping RRM measurements for a period of time) may be applied to RRM measurements including high priority inter-frequency and inter-RAT measurements, but only if the condition is met. The condition may relate to the serving cell receiving a signal level (e.g., srxlev) greater than a first threshold (e.g., snondin setsetchp) and a signal quality greater than a second threshold (e.g., snondin setchq). Otherwise, RRM relaxation of the first type may be applied.
When only the second trigger criteria for not being at the cell edge are configured, there is no RRM relaxation of RRM measurements available for including high priority inter-frequency and inter-RAT measurements if this condition is met. Otherwise, RRM relaxation of the first type may be applied.
When both the first trigger criteria and the second trigger criteria are configured and either trigger criteria are met, the first type of RRM relaxation may be applied to RRM measurements including intra-frequency measurements, inter-frequency measurements with the same or lower priority, and/or inter-RAT measurements. When both the first trigger criteria and the second trigger criteria are configured and either trigger criteria are met, there is no RRM relaxation available for RRM measurements including high priority inter-frequency and inter-RAT measurements if this condition is met. Otherwise, RRM relaxation of the first type may be applied.
When both the first trigger criteria and the second trigger criteria are configured and both trigger criteria are satisfied, the second type of RRM relaxation may be applied to RRM measurements including intra-frequency measurements, inter-frequency measurements with the same or lower priority, and/or inter-RAT measurements. When both the first trigger criteria and the second trigger criteria are configured and both trigger criteria are satisfied, the second type of RRM relaxation may be applied to RRM measurements including high priority inter-frequency and inter-RAT measurements.
However, existing RRM relaxation approaches do not consider the camping UE. The camped UE has different characteristics compared to the low mobility UE. For example, a camped UE has less uncertainty for mobility than a low mobility UE. Further, the camped UE has less fluctuation in link quality due to non-mobility than the low mobility UE. Thus, existing RRM relaxation approaches and corresponding parameters (or thresholds) are not well suited for camping on a UE. Existing RRM relaxation approaches may not be sufficient to relax RRM measurements. In other words, existing RRM relaxation approaches may not be sufficient to relax RRM measurements to maximum capability, as existing RRM relaxation approaches are designed for low mobility UEs and non-stationary UEs.
In various aspects of the techniques and apparatuses described herein, a UE may receive a first configuration associated with RRM measurement relaxation from a network entity based at least in part on the UE being stationary. The UE may be associated with a fixed location, as indicated in a subscription associated with the UE. The UE may be camped based at least in part on the signal strength of the UE satisfying a threshold over a period of time, wherein the threshold may be specific to the camped UE. In some aspects, the UE may receive a second configuration associated with RRM measurement relaxation from the network entity based at least in part on the UE not being located at the cell edge. The UE may not be located at a cell edge based at least in part on the signal strength of the UE meeting a threshold, where the threshold may be specific to the camped UE. The UE may perform RRM measurements based at least in part on the first configuration and/or the second configuration associated with RRM measurement relaxation.
In various aspects of the techniques and apparatuses described herein, a UE may perform RRM measurements based at least in part on a scaling factor associated with an interval of RRM measurements, where the scaling factor may be based at least in part on the UE being stationary and the UE being located at a cell edge. The scaling factor associated with RRM measurements may be different for a camped UE than for a UE with low mobility. Alternatively, the UE may cease RRM measurements for a period of time based at least in part on the UE being stationary and the UE not being located at the cell edge. As a result, the UE may maximize the RRM measurement relaxation level using the first configuration and/or the second configuration based on the stationary state of the UE, thereby maximizing the amount of power saved at the UE.
Fig. 3 is a diagram illustrating an example 300 associated with RRM measurement relaxation for a camped UE according to the present disclosure. As shown in fig. 3, example 300 includes communication between a UE (e.g., UE 120) and a network entity (e.g., base station 110). In some aspects, the UE and the network entity may be included in a wireless network (such as wireless network 100).
In some aspects, RRM measurement relaxation may involve relaxing RRM measurements at the UE for power saving. RRM measurement relaxation may involve reducing the interval between RRM measurements, thereby resulting in fewer RRM measurements and more power savings. RRM measurement relaxation may also involve temporarily stopping RRM measurements for a period of time, thereby resulting in power savings at the UE. RRM measurements may include intra-frequency measurements, inter-frequency measurements, and/or inter-RAT measurements.
In some aspects, RRM measurement relaxation may occur when the UE is in a Radio Resource Control (RRC) idle state or an inactive state. In some aspects, the UE may be a reduced capability UE or a non-reduced capability UE.
In some aspects, the UE may be a stationary UE. The stationary UE may be associated with a fixed location. In other words, the mobility properties of the camped UE do not change throughout the deployment of the camped UE. A fixed location associated with the camped UE may be determined after deployment of the camped UE. For example, information indicating the stationary state of the UE may be provided into a subscription associated with the UE. In other words, a Subscriber Identity Module (SIM) card associated with a resident UE may indicate that the UE is resident.
In some aspects, a serving cell received signal level (e.g., srxlev) for a camping UE may fluctuate based at least in part on a channel quality of a link associated with the camping UE. However, the fluctuation may be smaller than that of a low mobility UE or a mobile UE, because the link measurements used in deriving the serving cell received signal level may be filtered on different beams and by layer 3 (L3) over time. As a result, mobility of the camping UE may not be evaluated when determining whether RRM measurement relaxation is to be applied.
In some aspects, the camped UE may be camped because the UE is still moving from time to time. In this case, mobility of the camping UE may be evaluated against camping criteria when determining whether RRM measurement relaxation is to be applied. A UE may be considered to be stationary when the difference between the threshold (e.g., srxlev status) and the serving cell received signal level (e.g., srxlev) is less than a delta value (e.g., ssearchdeltap_status) over a period of time (e.g., tsearchdeltap_status). The ssearchdeltap_state parameter may be smaller than the SSearchDeltaP parameter used to evaluate the low mobility UE, and the tseararchdeltap_state parameter may be longer than the tseararchdeltap parameter used to evaluate the low mobility UE.
As indicated by reference numeral 302, the UE may receive one or more configurations associated with RRM measurement relaxation from a network entity. The UE may receive one or more configurations based at least in part on the UE being stationary. In other words, the UE may receive one or more configurations based at least in part on the UE having a fixed location or being stationary. When the UE is associated with a fixed location, the UE may be stationary, which may be indicated in a subscription associated with the UE. The UE may be camped based at least in part on the signal strength (e.g., srxlev) meeting a threshold (e.g., ssearchdeltap_state) over a period of time (e.g., tsearchdeltap_state), where the threshold may be specific to the camped UE. In other words, the UE may be considered stationary when this stationary criterion is met.
In some aspects, the UE may receive a first configuration associated with RRM measurement relaxation based at least in part on the UE being stationary. Further, the UE may receive a second configuration associated with RRM measurement relaxation from the network entity based at least in part on the UE not being located at the cell edge.
In some aspects, the stationary UE may have a separate RRM measurement relaxation configuration for the fixed location UE and the stationary UE, as the characteristics of the fixed location UE may be different from the characteristics of the stationary UE. In other words, the first configuration associated with RRM measurement relaxation based at least in part on the UE being stationary may be further divided into a first sub-configuration for fixed location UEs and/or a second sub-configuration for stationary UEs.
In some aspects, the network entity may individually enable and/or disable RRM measurement relaxation for fixed location and/or stationary UEs. When RRM measurement relaxation for a camping UE is enabled, the network entity may additionally configure non-cell edge criteria. For example, the UE may receive an indication from the network entity to enable or disable the first configuration and/or the second configuration associated with RRM measurement relaxation.
In some aspects, a second configuration associated with RRM measurement relaxation for UEs not at the cell edge may be applicable when a first configuration associated with RRM measurement relaxation for a camped UE is enabled. In some cases, the second configuration may only be applicable when the first configuration is enabled. The second configuration may allow a camped UE at the cell center to have a different RRM measurement relaxation than a camped UE at the cell edge. However, the second configuration may not be a free-standing configuration. In other words, when a first configuration associated with RRM measurement relaxation for a camped UE is disabled, a second configuration associated with RRM measurement relaxation for a UE that is not at a cell edge may not be enabled (e.g., a non-standalone non-cell edge criterion in which the camped RRM measurement relaxation is disabled but not at a cell edge).
In some aspects, the UE may satisfy a threshold (e.g., ssearchthreshold_state) based at least in part on the signal strength (e.g., srxlev) of the UE, rather than being located at the cell edge, and the threshold may be specific to the camped UE.
Because camped UEs (fixed location UEs or temporary camped UEs) have less uncertainty in mobility than low mobility UEs, the non-cell edge criteria for camped UEs may be different from the criteria for low mobility UEs. Further, unlike low mobility UEs, non-cell edge criteria may be configured only when camping criteria are configured, where the camping criteria may be used to determine whether the UE is camping (e.g., associated with a fixed location or is temporarily camping). In some aspects, a camping UE may be considered not to be at the cell edge when a serving cell received signal level (e.g., srxlev) is greater than a first power threshold (e.g., ssearchthreshold p_state) and a signal quality (e.g., square) is greater than a second power threshold if the second power threshold is configured (e.g., ssearchthreshold q_state). In other words, the UE may be considered not to be at the cell edge when the non-cell edge criterion is met.
As indicated by reference numeral 304, the UE may perform RRM measurements based at least in part on one or more configurations associated with RRM measurement relaxation. For example, the UE may perform RRM measurements based at least in part on a first configuration associated with RRM measurement relaxation (which is based at least in part on the UE being stationary and may further include a first sub-configuration if the UE has a fixed location and/or a second sub-configuration if the UE is stationary). Additionally, the UE may perform RRM measurements based at least in part on a second configuration associated with RRM measurement relaxation (which is based at least in part on the UE not being located at a cell edge). In other words, the UE may perform RRM measurements based at least in part on the first configuration and the second configuration, or the UE may perform RRM measurements based at least in part on only the first configuration.
In some aspects, the UE may perform RRM measurements with RRM measurement relaxation based at least in part on a scaling factor associated with an interval of RRM measurements. The scaling factor may be based at least in part on the UE being stationary and the UE being located at a cell edge. The scaling factor associated with RRM measurements may be different for a camped UE than for a UE with low mobility. In some aspects, the UE may perform RRM measurements with RRM measurement relaxation based at least in part on the UE being camped and the UE not being located at a cell edge by stopping RRM measurements for a period of time.
In some aspects, the camped UE may have less fluctuation in link quality than the low mobility UE, and thus more RRM measurements relaxation may be applied for the camped UE than the low mobility UE. As a result, RRM measurement relaxation may have separate parameters and triggers for the camped UE compared to the low mobility UE.
In some aspects, the UE may relax RRM measurements when the UE satisfies the camping criteria (e.g., the UE satisfies the camping criteria for a fixed location UE or for a temporary camping UE, as indicated in the first configuration), and the cell-edge-not-at criteria is not enabled or the UE does not satisfy the cell-edge-not-at criteria (e.g., as indicated in the second configuration). For example, the UE may put intra-band measurements, inter-frequency measurements with the same or lower priority, and/or inter-RAT measurements at longer intervals (e.g., adjusted scaling factors). Further, when the serving cell receives a signal level (e.g., srxlev) less than a first threshold (e.g., snondin setarchp) and a signal quality (e.g., square) less than a second threshold (e.g., snondin setarchq), the UE may relax higher priority inter-frequency and inter-RAT measurements at longer intervals (e.g., by an adjusted scaling factor). Otherwise, the UE may stop these RRM measurements for a configured duration. In some aspects, the UE may stop neighbor cell RRM measurements for a configured duration when the UE is not considered to be at the cell edge. Further, the scaling factor for relaxed RRM measurements and the duration for stopping measurements for the camped UE may be different compared to the low mobility UE.
In some aspects, RRM measurement relaxation may occur when the UE is in RRC connected mode.
In some aspects, the UE may perform RRM measurements with RRM measurement relaxation based at least in part on parameters of a UE-specific mode, where the mode may be an RRC idle mode or an RRC connected mode.
In some aspects, the UE may perform RRM measurements when the UE is in RRC connected mode, similar to performing RRM measurements when the UE is in RRC idle mode. Thus, when the UE is in RRC connected mode, a first configuration for RRM measurement relaxation for camped UEs and a second configuration for RRM measurement for UEs not at the cell edge may also apply. However, since the timing requirements for cell reselection in the RRC connected mode may be different from the timing requirements during the RRC idle mode, the network entity may be configured to trigger different parameters (e.g., SSearchDeltaP, TSearchDeltaP _state and/or ssearchthreshold p_state) for RRM measurement relaxation for the RRC idle mode and the RRC connected mode. Further, the network entity may configure different scaling factors for RRM measurement intervals for RRC idle mode and RRC connected mode. In other words, parameters associated with the camping criteria and/or the criteria that are not at the cell edge may vary based at least in part on whether the UE is in RRC idle mode or in RRC connected mode.
In some aspects, the UE may receive one or more configurations for RRM measurement relaxation from a network entity via dedicated signaling or via broadcast signaling. RRM measurement relaxation may be enabled via broadcast signaling or dedicated signaling when the UE is in RRC connected mode. As an example, the network entity may enable RRM measurement relaxation for a particular class of UEs, rather than for all UEs in the cell, so in this case the network entity may use dedicated signaling. As another example, after RRM measurement relaxation is triggered, the network entity may configure a fewer number of measurement objects and the reduction of measurement objects may be supported by dedicated signaling.
In some aspects, the UE may transmit capability signaling to the network entity indicating the capability of the UE. The UE may receive one or more configurations for RRM measurement relaxation based at least in part on the capability signaling. For example, the UE may indicate its camping status to the network entity, which may enable the network entity to communicate one or more configurations for RRM measurement relaxation via dedicated signaling. A UE having a fixed location may determine the fixed location based at least in part on a subscription associated with the UE, and the UE may indicate the fixed location to a network entity via capability signaling. When the UE enters RRC connected mode, the network entity may directly configure the neighbor cell RRM measurement configuration to the UE, which may be more relaxed than the non-stationary UE. Further, the network entity may configure the non-incumbent cell edge criteria for the UE, and if the UE meets the non-incumbent cell edge criteria, the UE may autonomously stop neighbor cell RRM measurements for the configured duration.
In some aspects, the UE may transmit UE assistance information to the network entity, the UE assistance information indicating a request for one or more configurations for RRM measurement relaxation. For example, for a camped UE, when RRM measurement relaxation for the camped UE is not advertised in a System Information Block (SIB), the camped UE may use UE assistance information to request one or more configurations for RRM measurement relaxation. The camped UE may send the request after determining that the UE is camped at the upcoming time. The network entity may provide the UE with one or more configurations for RRM measurement relaxation. The camping UE may stop the relaxed RRM measurement at the end of a preset duration (e.g., one hour) or after the camping criteria are no longer met.
In some aspects, when the UE operates in RRC connected mode, the UE may receive one or more configurations for RRM measurement relaxation via the SIB. The UE may autonomously perform RRM measurements based at least in part on one or more configurations for RRM measurement relaxation. For example, when RRM measurement relaxation is configured via broadcast, the network entity may advertise RRM measurement relaxation trigger criteria and parameters in the SIB, similar to when the UE is in RRC idle mode. The UE may autonomously determine when to trigger RRM measurement relaxation for neighbor cell RRM measurements based at least in part on the link quality measurements. Further, the UE may determine what type of RRM measurement relaxation to apply (e.g., adjust a scaling factor or temporarily stop RRM measurements).
In some aspects, the network entity may advertise one or more configurations for RRM measurement relaxation in the cell. The one or more configurations may include a first configuration for camped UEs (e.g., which may include fixed location UEs and/or temporary camped UEs), a second configuration for low mobility UEs, and/or a third configuration for UEs that are not at the cell edge. Depending on whether the UE satisfies the camping criteria, the non-cell edge criteria, and/or the low mobility criteria, the UE may apply one or more of the configurations for RRM measurement relaxation.
As indicated above, fig. 3 is provided as an example. Other examples may differ from the example described with respect to fig. 3.
Fig. 4 is a diagram illustrating an example process 400 performed, for example, by a UE, in accordance with the present disclosure. Example process 400 is an example of a UE (e.g., UE 120) performing operations associated with RRM measurement relaxation for a resident UE.
As shown in fig. 4, in some aspects, process 400 may include receiving a configuration associated with RRM measurement relaxation from a network entity based at least in part on the UE being stationary (at block 410). For example, the UE (e.g., using the receiving component 502 depicted in fig. 5) may receive a configuration associated with RRM measurement relaxation from the network entity based at least in part on the UE being stationary, as described above.
As further shown in fig. 4, in some aspects, process 400 may include performing RRM measurements based at least in part on a configuration associated with RRM measurement relaxation (at block 420). For example, the UE (e.g., using the measurement component 508 depicted in fig. 5) may perform RRM measurements based at least in part on the configuration associated with RRM measurement relaxation, as described above.
Process 400 may include additional aspects, such as any single aspect or any combination of aspects described below and/or in conjunction with one or more other processes described elsewhere herein.
In a first aspect, a stationary UE is associated with a fixed location, as indicated in a subscription associated with the UE.
In a second aspect, alone or in combination with the first aspect, the camped UE is camped based at least in part on the signal strength of the UE satisfying a threshold over a period of time, wherein the threshold is specific to the camped UE.
In a third aspect, alone or in combination with one or more of the first and second aspects, a configuration associated with RRM measurement relaxation is applied when the UE is in a radio resource control idle mode.
In a fourth aspect, alone or in combination with one or more of the first to third aspects, the process 400 includes receiving an indication from a network entity that the UE should disable a configuration associated with RRM measurement relaxation.
In a fifth aspect, alone or in combination with one or more of the first through fourth aspects, the configuration is a first configuration and the process 400 includes receiving a second configuration associated with RRM measurement relaxation from a network entity based at least in part on the UE not being located at a cell edge, wherein the UE meets a threshold based at least in part on a signal strength of the UE not being located at the cell edge, and wherein the threshold is specific to a camping UE.
In a sixth aspect, alone or in combination with one or more of the first through fifth aspects, performing RRM measurements based at least in part on a configuration associated with RRM measurement relaxation comprises: the RRM measurement is performed based at least in part on a scaling factor associated with an interval of the RRM measurement, wherein the scaling factor is based at least in part on the UE being stationary and the UE being located at a cell edge.
In a seventh aspect, alone or in combination with one or more of the first to sixth aspects, the scaling factor associated with RRM measurements is different for a camped UE than for a UE with low mobility.
In an eighth aspect, alone or in combination with one or more of the first through seventh aspects, performing RRM measurements based at least in part on a configuration associated with RRM measurement relaxation comprises: the RRM measurement is stopped for a period of time based at least in part on the UE being stationary and the UE not being located at a cell edge.
In a ninth aspect, alone or in combination with one or more of the first to eighth aspects, the RRM measurements comprise one or more of intra-frequency measurements, inter-frequency measurements or inter-radio access technology measurements.
In a tenth aspect, alone or in combination with one or more of the first to ninth aspects, a configuration associated with RRM measurement relaxation is applied when the UE is in radio resource control connected mode.
In an eleventh aspect, alone or in combination with one or more of the first through tenth aspects, performing RRM measurements based at least in part on a configuration associated with RRM measurement relaxation comprises: RRM measurements are performed based at least in part on parameters of a UE-specific mode, wherein the mode is one of a radio resource control idle mode or a radio resource control connected mode.
In a twelfth aspect, alone or in combination with one or more of the first to eleventh aspects, receiving the configuration comprises receiving the configuration via dedicated signaling or via broadcast signaling.
In a thirteenth aspect, alone or in combination with one or more of the first through twelfth aspects, the process 400 includes transmitting capability signaling to the network entity indicating the capability of the UE, and receiving the configuration includes receiving the configuration based at least in part on the capability signaling.
In a fourteenth aspect, alone or in combination with one or more of the first through thirteenth aspects, the process 400 includes transmitting UE assistance information indicating a request for configuration to a network entity.
In a fifteenth aspect, alone or in combination with one or more of the first through fourteenth aspects, receiving the configuration includes receiving the configuration via a system information block when the UE is operating in a radio resource control connected mode, and performing RRM measurements includes autonomously performing the RRM measurements based at least in part on the configuration received via the system information block.
In a sixteenth aspect, alone or in combination with one or more of the first to fifteenth aspects, the configuration is included in a plurality of configurations available from a network entity, wherein the plurality of configurations includes a first configuration for camped UEs, a second configuration for low mobility UEs, and a third configuration for UEs not at a cell edge.
In a seventeenth aspect, the UE is a reduced capability UE, alone or in combination with one or more of the first to sixteenth aspects.
In an eighteenth aspect, the UE is a non-capability-reducing UE, alone or in combination with one or more of the first to seventeenth aspects.
While fig. 4 shows example blocks of the process 400, in some aspects, the process 400 may include additional blocks, fewer blocks, different blocks, or differently arranged blocks than depicted in fig. 4. Additionally or alternatively, two or more blocks of process 400 may be performed in parallel.
Fig. 5 is a block diagram of an example apparatus 500 for wireless communication. The apparatus 500 may be a UE, or the UE may include the apparatus 500. In some aspects, the apparatus 500 includes a receiving component 502 and a transmitting component 504 that can be in communication with each other (e.g., via one or more buses and/or one or more other components). As shown, apparatus 500 may use a receiving component 506 and a transmitting component 502 to communicate with another apparatus 504 (such as a UE, a base station, or another wireless communication device). As further shown, the apparatus 500 may include a measurement component 508 or the like.
In some aspects, the apparatus 500 may be configured to perform one or more operations described herein in connection with fig. 3. Additionally or alternatively, the apparatus 500 may be configured to perform one or more processes described herein (such as process 400 of fig. 4) or a combination thereof. In some aspects, the apparatus 500 and/or one or more components shown in fig. 5 may include one or more components of the UE described above in connection with fig. 2. Additionally or alternatively, one or more of the components shown in fig. 5 may be implemented within one or more of the components described above in connection with fig. 2. Additionally or alternatively, one or more components of the set of components may be implemented at least in part as software stored in memory. For example, a component (or a portion of a component) may be implemented as instructions or code stored in a non-transitory computer-readable medium and executable by a controller or processor to perform the functions or operations of the component.
The receiving component 502 can receive a communication (such as a reference signal, control information, data communication, or a combination thereof) from a device 506. The receiving component 502 can provide the received communication to one or more other components of the apparatus 500. In some aspects, the receiving component 502 can perform signal processing (such as filtering, amplifying, demodulating, analog-to-digital converting, demultiplexing, deinterleaving, demapping, equalizing, interference cancellation or decoding, etc.) on the received communication and can provide the processed signal to one or more other components of the apparatus 500. In some aspects, the receiving component 502 may include one or more antennas, demodulators, MIMO detectors, receive processors, controllers/processors, memories, or a combination thereof for the UE described above in connection with fig. 2.
The transmission component 504 can communicate (such as reference signals, control information, data communications, or a combination thereof) to the device 506. In some aspects, one or more other components of apparatus 500 may generate a communication and may provide the generated communication to transmission component 504 for transmission to apparatus 506. In some aspects, the transmission component 504 can perform signal processing (such as filtering, amplifying, modulating, digital-to-analog converting, multiplexing, interleaving, mapping, encoding, etc.) on the generated communication and can transmit the processed signal to the device 506. In some aspects, the transmission component 504 may include one or more antennas, modulators, transmit MIMO processors, transmit processors, controllers/processors, memories, or combinations thereof of the UE described above in connection with fig. 2. In some aspects, the transmitting component 504 may be co-located with the receiving component 502 in a transceiver.
The receiving component 502 can receive a configuration associated with RRM measurement relaxation from a network entity based at least in part on the UE being stationary. The measurement component 508 can perform RRM measurements based at least in part on a configuration associated with RRM measurement relaxation.
The receiving component 502 may receive an indication from the network entity that the UE should disable the configuration associated with RRM measurement relaxation. The transmission component 504 can transmit capability signaling to the network entity indicating the capability of the UE. The transmission component 504 may transmit UE assistance information indicating a request for configuration to a network entity. The receiving component 502 may receive the configuration via a system information block when the UE is operating in a radio resource control connected mode. The measurement component 508 can autonomously perform RRM measurements based at least in part on the configuration received via the system information block.
The number and arrangement of components shown in fig. 5 are provided as examples. In practice, there may be additional components, fewer components, different components, or differently arranged components than those shown in fig. 5. Further, two or more components shown in fig. 5 may be implemented within a single component, or a single component shown in fig. 5 may be implemented as multiple distributed components. Additionally or alternatively, a set of components (e.g., one or more components) shown in fig. 5 may perform one or more functions described as being performed by another set of components shown in fig. 5.
The following provides an overview of some aspects of the disclosure:
aspect 1: a method of performing wireless communications by a User Equipment (UE), comprising: receive a configuration associated with Radio Resource Management (RRM) measurement relaxation from a network entity based at least in part on the UE being stationary; and performing RRM measurements based at least in part on the configuration associated with RRM measurement relaxation.
Aspect 2: the method of aspect 1, wherein the stationary UE is associated with a fixed location, as indicated in a subscription associated with the UE.
Aspect 3: the method of any of aspects 1-2, wherein the camped UE is camped based at least in part on a signal strength of the UE meeting a threshold over a period of time, wherein the threshold is specific to the camped UE.
Aspect 4: the method of any of aspects 1-3, wherein a configuration associated with RRM measurement relaxation is applied while the UE is in a radio resource control idle mode.
Aspect 5: the method of any one of aspects 1 to 4, further comprising: an indication is received from the network entity that the UE should disable a configuration associated with RRM measurement relaxation.
Aspect 6: the method of any one of aspects 1 to 5, wherein the configuration is a first configuration, and the method further comprises: a second configuration associated with RRM measurement relaxation is received from the network entity based at least in part on the UE not being located at the cell edge, wherein the UE satisfies a threshold based at least in part on a signal strength of the UE not being located at the cell edge, and wherein the threshold is specific to a camped UE.
Aspect 7: the method of any of aspects 1-6, wherein performing RRM measurements based at least in part on a configuration associated with RRM measurement relaxation comprises: the RRM measurement is performed based at least in part on a scaling factor associated with an interval of the RRM measurement, wherein the scaling factor is based at least in part on the UE being stationary and the UE being located at a cell edge.
Aspect 8: the method of aspect 7, wherein the scaling factor associated with RRM measurements is different for the camped UE than for the UE with low mobility.
Aspect 9: the method of any of aspects 1-8, wherein performing RRM measurements based at least in part on a configuration associated with RRM measurement relaxation comprises: the RRM measurement is stopped for a period of time based at least in part on the UE being stationary and the UE not being located at a cell edge.
Aspect 10: the method of any one of aspects 1 to 9, wherein the RRM measurement comprises one or more of: intra-frequency measurements, inter-frequency measurements or inter-radio access technology measurements.
Aspect 11: the method of any of aspects 1 to 10, wherein a configuration associated with RRM measurement relaxation is applied while the UE is in radio resource control connected mode.
Aspect 12: the method of any of aspects 1-10, wherein performing RRM measurements based at least in part on a configuration associated with RRM measurement relaxation comprises: RRM measurements are performed based at least in part on parameters of a UE-specific mode, wherein the mode is one of a radio resource control idle mode or a radio resource control connected mode.
Aspect 13: the method of any one of aspects 1 to 12, wherein receiving a configuration comprises receiving the configuration via dedicated signaling or via broadcast signaling.
Aspect 14: the method of any one of aspects 1 to 13, further comprising: transmitting capability signaling indicating capabilities of the UE to the network entity; and wherein receiving the configuration comprises: the configuration is received based at least in part on the capability signaling. Wherein the receiving configuration comprises: the configuration is received based at least in part on the capability signaling.
Aspect 15: the method of any one of aspects 1 to 14, further comprising: UE assistance information indicating a request for configuration is transmitted to a network entity.
Aspect 16: the method of any one of aspects 1 to 15, wherein: receiving a configuration includes receiving the configuration via a system information block while the UE is operating in a radio resource control connected mode; and performing RRM measurements includes autonomously performing the RRM measurements based at least in part on the configuration received via the system information block.
Aspect 17: the method of any one of aspects 1 to 16, wherein the configuration is included in a plurality of configurations available from a network entity, wherein the plurality of configurations includes a first configuration for camped UEs, a second configuration for low mobility UEs, and a third configuration for UEs that are not at a cell edge.
Aspect 18: the method of any one of aspects 1 to 17, wherein the UE is a reduced capability UE.
Aspect 19: the method of any one of aspects 1 to 18, wherein the UE is a non-capability-reducing UE.
Aspect 20: an apparatus for wireless communication at a device, comprising: a processor; a memory coupled to the processor; and instructions stored in the memory and executable by the processor to cause the apparatus to perform the method as in one or more of aspects 1-19.
Aspect 21: an apparatus for wireless communication comprising a memory and one or more processors coupled to the memory, the one or more processors configured to perform the method of one or more of aspects 1-19.
Aspect 22: an apparatus for wireless communication, comprising at least one means for performing the method of one or more of aspects 1-19.
Aspect 23: a non-transitory computer-readable medium storing code for wireless communication, the code comprising instructions executable by a processor to perform a method as one or more of aspects 1-19.
Aspect 24: a non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising one or more instructions that, when executed by one or more processors of a device, cause the device to perform a method as in one or more of aspects 1-19.
The foregoing disclosure provides insight and description, but is not intended to be exhaustive or to limit aspects to the precise form disclosed. Modifications and variations are possible in light of the above disclosure or may be acquired from practice of the various aspects.
As used herein, the term "component" is intended to be broadly interpreted as hardware and/or a combination of hardware and software. "software" should be construed broadly to mean instructions, instruction sets, code segments, program code, programs, subroutines, software modules, applications, software packages, routines, subroutines, objects, executables, threads of execution, procedures, and/or functions, etc., whether described in software, firmware, middleware, microcode, hardware description language, or other terminology. As used herein, a "processor" is implemented in hardware, and/or a combination of hardware and software. It will be apparent that the systems and/or methods described herein may be implemented in different forms of hardware, and/or combinations of hardware and software. The actual specialized control hardware or software code used to implement the systems and/or methods is not limiting of the aspects. Thus, the operation and behavior of the systems and/or methods were described herein without reference to the specific software code-as one of ordinary skill in the art would understand that software and hardware could be designed to implement the systems and/or methods based at least in part on the description herein.
As used herein, a "meeting a threshold" may refer to a value greater than a threshold, greater than or equal to a threshold, less than or equal to a threshold, not equal to a threshold, etc., depending on the context.
Although specific combinations of features are recited in the claims and/or disclosed in the specification, such combinations are not intended to limit the disclosure of the various aspects. Many of these features may be combined in ways not specifically recited in the claims and/or disclosed in the specification. The disclosure of the various aspects includes each dependent claim combined with each other claim of the set of claims. As used herein, a phrase referring to a list of items "at least one of" refers to any combination of these items, including individual members. As an example, "at least one of a, b, or c" is intended to encompass: a. b, c, a-b, a-c, b-c, and a-b-c, as well as any combination having multiple identical elements (e.g., a-a-a, a-a-b, a-a-c, a-b-b, a-c-c, b-b-b, b-b-c, c-c, and c-c-c, or any other ordering of a, b, and c).
No element, act, or instruction used herein should be construed as critical or essential unless explicitly described as such. Moreover, as used herein, the articles "a" and "an" are intended to include one or more items, and may be used interchangeably with "one or more". Furthermore, as used herein, the article "the" is intended to include one or more items referenced in connection with the article "the" and may be used interchangeably with "one or more". Furthermore, as used herein, the terms "set" and "group" are intended to include one or more items, and may be used interchangeably with "one or more". Where only one item is intended, the phrase "only one" or similar language is used. Also, as used herein, the terms "having," "containing," "including," and the like are intended to be open ended terms that do not limit the element they modify (e.g., the element "having" a may also have B). Furthermore, the phrase "based on" is intended to mean "based, at least in part, on" unless explicitly stated otherwise. Also, as used herein, the term "or" when used in a sequence is intended to be inclusive and may be used interchangeably with "and/or" unless otherwise specifically stated (e.g., where used in conjunction with "any one of" or "only one of").

Claims (30)

1. An apparatus for wireless communication at a User Equipment (UE), comprising:
a memory; and
one or more processors coupled to the memory, the one or more processors configured to:
receive a configuration associated with Radio Resource Management (RRM) measurement relaxation from a network entity based at least in part on the UE being stationary; and
RRM measurements are performed based at least in part on the configuration associated with RRM measurement relaxation.
2. The apparatus of claim 1, wherein the UE is associated with a fixed location as indicated in a subscription associated with the UE.
3. The apparatus of claim 1, wherein the camped UE is camped based at least in part on a signal strength of the UE meeting a threshold over a period of time, and wherein the threshold is specific to a camped UE.
4. The apparatus of claim 1, wherein the configuration associated with RRM measurement relaxation is applied when the UE is in a radio resource control idle mode.
5. The apparatus of claim 1, wherein the one or more processors are further configured to:
an indication is received from a network entity that the UE should disable the configuration associated with the RRM measurement relaxation.
6. The apparatus of claim 1, wherein the configuration is a first configuration, and wherein the one or more processors are further configured to receive a second configuration associated with RRM measurement relaxation from the network entity based at least in part on the UE not being located at a cell edge, wherein the UE satisfies a threshold based at least in part on a signal strength of the UE not being located at a cell edge, and wherein the threshold is specific to a resident UE.
7. The apparatus of claim 1, wherein to perform the RRM measurement based at least in part on the configuration associated with RRM measurement relaxation, the one or more processors are configured to perform the RRM measurement based at least in part on a scaling factor associated with an interval of the RRM measurement, wherein the scaling factor is based at least in part on the UE being stationary and the UE being located at a cell edge.
8. The apparatus of claim 7, wherein the scaling factor associated with the RRM measurement is different for the UE camping than for a UE with low mobility.
9. The apparatus of claim 1, wherein to perform the RRM measurement based at least in part on the configuration associated with RRM measurement relaxation, the one or more processors are configured to stop the RRM measurement for a period of time based at least in part on the UE being stationary and the UE not being located at a cell edge.
10. The apparatus of claim 1, wherein the RRM measurements comprise one or more of: intra-frequency measurements, inter-frequency measurements or inter-radio access technology measurements.
11. The apparatus of claim 1, wherein the configuration associated with RRM measurement relaxation is applied when the UE is in a radio resource control connected mode.
12. The apparatus of claim 1, wherein to perform the RRM measurement based at least in part on the configuration associated with RRM measurement relaxation, the one or more processors are configured to perform the RRM measurement based at least in part on a parameter specific to a mode of the UE, wherein the mode is one of a radio resource control idle mode or a radio resource control connected mode.
13. The apparatus of claim 1, wherein to receive the configuration, the one or more processors are configured to receive the configuration via dedicated signaling or via broadcast signaling.
14. The apparatus of claim 1, wherein the one or more processors are further configured to:
transmitting capability signaling indicating capabilities of the UE to the network entity; and
the configuration is received based at least in part on the capability signaling.
15. The apparatus of claim 1, wherein the one or more processors are further configured to:
UE assistance information indicating a request for the configuration is transmitted to the network entity.
16. The apparatus of claim 1, wherein:
to receive a configuration, the one or more processors are configured to receive the configuration via a system information block when the UE is operating in a radio resource control connected mode; and is also provided with
To perform the RRM measurements, the one or more processors are configured to autonomously perform the RRM measurements based at least in part on the configuration received via the system information block.
17. The method of claim 1, wherein the configuration is included in a plurality of configurations available from the network entity, wherein the plurality of configurations includes a first configuration for camped UEs, a second configuration for low mobility UEs, and a third configuration for UEs that are not at cell edges.
18. The apparatus of claim 1, wherein the UE is a reduced capability UE.
19. The apparatus of claim 1, wherein the UE is a non-capability-reducing UE.
20. A wireless communication method performed by a User Equipment (UE), comprising:
receive a configuration associated with Radio Resource Management (RRM) measurement relaxation from a network entity based at least in part on the UE being stationary; and
RRM measurements are performed based at least in part on the configuration associated with RRM measurement relaxation.
21. The method of claim 20, wherein:
the UE is associated with a fixed location, as indicated in a subscription associated with the UE; or alternatively
The UE being camped is camped based at least in part on a signal strength of the UE meeting a threshold over a period of time, wherein the threshold is specific to the camped UE.
22. The method of claim 20, wherein:
applying the configuration associated with RRM measurement relaxation when the UE is in a radio resource control idle mode; or alternatively
The configuration associated with RRM measurement relaxation is applied when the UE is in radio resource control connected mode.
23. The method of claim 20, wherein the configuration is a first configuration, and the method further comprises receiving a second configuration associated with RRM measurement relaxation from the network entity based at least in part on the UE not being located at a cell edge, wherein the UE satisfies a threshold based at least in part on a signal strength of the UE not being located at a cell edge, and wherein the threshold is specific to a resident UE.
24. A non-transitory computer-readable medium storing a set of instructions for wireless communication, the set of instructions comprising:
one or more instructions that, when executed by one or more processors of a User Equipment (UE), cause the UE to:
receive a configuration associated with Radio Resource Management (RRM) measurement relaxation from a network entity based at least in part on the UE being stationary; and
RRM measurements are performed based at least in part on the configuration associated with RRM measurement relaxation.
25. The non-transitory computer-readable medium of claim 24, wherein:
the UE camping is associated with a fixed location, as indicated in a subscription associated with the UE; or alternatively
The UE being camped is camped based at least in part on a signal strength of the UE meeting a threshold over a period of time, wherein the threshold is specific to the camped UE.
26. The non-transitory computer-readable medium of claim 24, wherein performing the RRM measurement based at least in part on the configuration associated with RRM measurement relaxation comprises: the RRM measurement is performed based at least in part on a scaling factor associated with an interval of the RRM measurement, wherein the scaling factor is based at least in part on the UE being camped and the UE being located at a cell edge, and wherein the scaling factor associated with the RRM measurement is different for a camped UE than for a UE having low mobility.
27. The non-transitory computer-readable medium of claim 24, wherein the one or more instructions that cause the UE to perform the RRM measurement based at least in part on the configuration associated with RRM measurement relaxation cause the UE to stop the RRM measurement for a period of time based at least in part on the UE being stationary and the UE not being located at a cell edge.
28. An apparatus for wireless communication, comprising:
means for receiving a configuration associated with Radio Resource Management (RRM) measurement relaxation from a network entity based at least in part on the device being stationary; and
means for performing RRM measurements based at least in part on the configuration associated with RRM measurement relaxation.
29. The apparatus of claim 28, wherein the configuration is a first configuration, and the apparatus further comprises means for receiving a second configuration associated with RRM measurement relaxation from the network entity based at least in part on the apparatus not being located at a cell edge, wherein the apparatus is not located at a cell edge based at least in part on a signal strength of the apparatus meeting a threshold, and wherein the threshold is specific to a resident apparatus.
30. The apparatus of claim 28, wherein means for performing the RRM measurement based at least in part on the configuration associated with RRM measurement relaxation comprises:
means for stopping the RRM measurement for a period of time based at least in part on the device being stationary and the device not being located at a cell edge; or alternatively
Means for performing the RRM measurement based at least in part on a parameter specific to a mode of the apparatus, wherein the mode is one of a radio resource control idle mode or a radio resource control connected mode.
CN202280022743.1A 2021-03-26 2022-02-16 Radio resource management measurement relaxation for resident user equipment Pending CN117063513A (en)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
US63/166,514 2021-03-26
US17/651,171 US20220312243A1 (en) 2021-03-26 2022-02-15 Radio resource management measurement relaxation for stationary user equipments
US17/651,171 2022-02-15
PCT/US2022/070686 WO2022204636A1 (en) 2021-03-26 2022-02-16 Radio resource management measurement relaxation for stationary user equipments

Publications (1)

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CN117063513A true CN117063513A (en) 2023-11-14

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