Positioning reference signal (PRS) measurement window adaptation

Abstract

Various techniques are disclosed for wireless positioning. In an aspect, time spent by a user equipment (UE) in performing positioning reference signal (PRS) measurements is reduced by extending a PRS measurement period (P) and / or by reducing a PRS symbol duration (K). These modifications can be performed by the UE or by a location management server or other network node, and can be made taking into account a mobility state of the UE and other environmental or operational conditions of the UE. In an aspect, a network entity can determine P and K to be used by the UE (710), and can indicate P and K to the UE for use by the UE in measuring at least one PRS (720). The UE can then measure at least one PRS using the P and K.

Description

[0001] Cross-references to related applications

[0002] This application claims priority to U.S. Provisional Application No. 63 / 068,704, filed August 21, 2020, entitled "POSITIONING REFERENCE SIGNAL (PRS) MEASUREMENT WINDOW ADAPTATION", and U.S. Non-Provisional Application No. 17 / 406,300, filed August 19, 2021, entitled "POSITIONING REFERENCE SIGNAL (PRS) MEASUREMENT WINDOW ADAPTATION", both of which have been assigned to the assignee of this application and are incorporated herein by reference in their entirety. Technical Field

[0003] The various aspects of this disclosure generally relate to wireless communications. Background Technology

[0004] Wireless communication systems have undergone several generations of development, including first-generation analog radiotelephone service (1G), second-generation (2G) digital radiotelephone service (including transitional 2.5G and 2.75G networks), third-generation (3G) high-speed data radio service with Internet capabilities, and fourth-generation (4G) service (e.g., Long Term Evolution (LTE) or WiMax). Currently, many different types of wireless communication systems are in use, including cellular and Personal Communication Services (PCS) systems. Known examples of cellular systems include cellular analog Advanced Mobile Phone Systems (AMPS), and digital cellular systems based on Code Division Multiple Access (CDMA), Frequency Division Multiple Access (FDMA), Time Division Multiple Access (TDMA), Global System for Mobile Communications (GSM), etc.

[0005] The fifth-generation (5G) wireless standard (known as New Radio (NR)) demands higher data transmission speeds, a greater number of connections, better coverage, and other improvements. According to the Next Generation Mobile Networks Alliance (NGC), the 5G standard is designed to provide tens of megabits per second (Mbps) of data rate to each of tens of thousands of users, and 1 gigabits per second (Gbps) to dozens of employees in an office building. It should support hundreds of thousands of simultaneous connections to support large-scale sensor deployments. Therefore, the spectral efficiency of 5G mobile communications should be significantly improved compared to the current 4G standard. Furthermore, signaling efficiency should be improved and latency significantly reduced compared to the current standard. These advancements, along with the use of higher frequency bands, progress in positioning reference signal processes and technologies, and the high-density deployment of 5G, enable highly accurate 5G-based positioning. Summary of the Invention

[0006] Various techniques for wireless communication are disclosed. In one aspect, by extending the PRS measurement period (P) and / or by reducing the PRS symbol duration (K), the time spent by the user equipment (UE) in performing Position Reference Signal (PRS) measurements is reduced. These modifications can be performed by the UE, the Location Management Server (LMS), or other network nodes, and can be made taking into account the UE's mobility state and other environmental or operational conditions.

[0007] The techniques described in this article offer several technical benefits, including but not limited to improving device efficiency, reducing power consumption, and reducing UE complexity by reducing the amount of time the UE spends performing PRS measurements.

[0008] The following is a simplified overview relating to one or more aspects disclosed herein. Therefore, this overview should not be considered an exhaustive overview relating to all aspects of the conception, nor should it be considered to identify key or decisive elements relating to all aspects of the conception or to depict the scope associated with any particular aspect. Accordingly, the sole purpose of the following overview is to present, in a simplified form, certain concepts relating to one or more aspects of the mechanism disclosed herein before the detailed description given below.

[0009] In one aspect, a wireless communication method performed by a network entity includes: determining a positioning reference signal (PRS) measurement window period value (P) and a minimum PRS symbol duration value (K) to be used by a user equipment (UE); and transmitting to the UE an indication of P and K for the UE to use in measuring at least one PRS.

[0010] In one aspect, a wireless communication method performed by a UE includes: receiving P or an indication thereof from a network entity, and K or an indication thereof; and measuring at least one PRS based at least in part on the P and K.

[0011] In one aspect, a network entity includes: a memory; at least one transceiver; and at least one processor communicatively coupled to the memory and the at least one transceiver, the at least one processor being configured to: determine P and K to be used by a UE; and transmit instructions for P and K to the UE via the at least one transceiver for the UE to use in measuring at least one PRS.

[0012] In one aspect, a UE includes: a memory, at least one transceiver, and at least one processor communicatively coupled to the memory and the at least one transceiver, the at least one processor being configured to: receive indications of P and K from a network entity via the at least one transceiver; and use the P and K to measure at least one PRS.

[0013] In one aspect, a network entity includes: means for determining P and K to be used by a UE; and means for transmitting instructions to the UE regarding P and K for the UE to use in measuring at least one PRS.

[0014] In one aspect, a UE includes: means for receiving indications of P and K from a network entity; and means for measuring at least one PRS based at least in part on the P and K.

[0015] In one aspect, a non-transient computer-readable medium storing computer-executable instructions that, when executed by a network entity, cause the network entity to: determine P and K to be used by a UE; and transmit to the UE an indication of P and K for the UE to use in measuring at least one PRS.

[0016] In one aspect, a non-transient computer-readable medium storing computer-executable instructions that, when executed by a UE, cause the UE to: receive instructions for P and K from a network entity; and use the P and K to measure at least one PRS.

[0017] Other objectives and advantages associated with the aspects disclosed herein will be apparent to those skilled in the art based on the accompanying drawings and detailed description. Attached Figure Description

[0018] The accompanying drawings are provided to help describe examples of one or more aspects of the disclosed subject matter, and these drawings are provided merely to illustrate the examples and not to limit the scope thereof:

[0019] Figure 1 Exemplary wireless communication systems based on various aspects are explained;

[0020] Figure 2A and Figure 2B The example wireless network architecture is explained from various aspects;

[0021] Figure 3A , 3B 3C is a simplified block diagram of several sample aspects of components that can be adopted in user equipment (UE), base station, and network entity and configured to support communications as taught herein.

[0022] Figure 4A and 4B It explains the example frame structures based on various aspects and provides diagrams of the channels within these frame structures;

[0023] Figure 5 It is a diagram illustrating how the measurement gap pattern is specified based on the parameters in the measurement gap (MG) configuration of various aspects;

[0024] Figure 6 It explains some parameters associated with PRS measurements; and

[0025] Figures 7 to 20 Methods for wireless positioning based on various aspects of this disclosure are explained. Detailed Implementation

[0026] Various techniques for wireless communication are disclosed. In one aspect, the time spent by the user equipment (UE) in performing PRS measurements is reduced by extending the Position Reference Signal (PRS) measurement period (P) and / or by reducing the PRS symbol duration (K). These modifications can be performed by the UE, the Location Management Server (LMS), or other network nodes, and can be made taking into account the UE's mobility state and other environmental or operational conditions.

[0027] Various aspects of this disclosure are provided below in the description and accompanying drawings of various examples provided for illustrative purposes. Alternative aspects may be designed without departing from the scope of this disclosure. Furthermore, elements well-known in this disclosure will not be described in detail or will be omitted so as not to obscure the relevant details of this disclosure.

[0028] The terms “exemplary” and / or “example” are used herein to mean “serving as an example, instance, or illustration.” Any aspect described herein as “exemplary” and / or “example” is not necessarily to be construed as superior to or better than the others. Similarly, the term “aspects of this disclosure” does not require that all aspects of this disclosure include the features, advantages, or modes of operation discussed.

[0029] Those skilled in the art will appreciate that the information and signals described below can be represented using any of a variety of different techniques and arts. For example, the data, instructions, commands, information, signals, bits, symbols, and chips that may be referred to throughout the following description may be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, optical fields or optical particles, or any combination thereof, depending in part on the specific application, in part on the desired design, in part on the corresponding technology, etc.

[0030] Furthermore, many aspects are described in the form of sequences of actions performed by elements of, for example, computing devices. It will be appreciated that the various actions described herein can be performed by special-purpose circuitry (e.g., application-specific integrated circuits (ASICs)), by program instructions being executed by one or more processors, or by a combination of both. Additionally, the sequences of actions described herein can be considered to be fully embodied in any form of non-transient computer-readable storage medium storing a corresponding set of computer instructions that, upon execution, will cause an associated processor of the device to perform the functions described herein. Thus, various aspects of this disclosure can be embodied in several different forms, all of which are contemplated to fall within the scope of the claimed subject matter. Furthermore, for each aspect described herein, a corresponding form of any such aspect may be described herein as, for example, "logic configured to perform the described actions."

[0031] As used herein, the terms “User Equipment” (UE) and “Base Station” are not intended to be specific to or otherwise limited to any particular Radio Access Technology (RAT) unless otherwise stated. Generally, a UE can be any wireless communication device used by a user to communicate over a wireless communication network (e.g., mobile phone, router, tablet computer, laptop computer, tracking device, wearable device (e.g., smartwatch, glasses, augmented reality (AR) / virtual reality (VR) headset, etc.), vehicle (e.g., car, motorcycle, bicycle, etc.), Internet of Things (IoT) device, etc.). A UE can be mobile or can (e.g., at certain times) be stationary and can communicate with a Radio Access Network (RAN). As used herein, the term “UE” can be interchangeably referred to as “Access Terminal” or “AT”, “Client Equipment”, “Wireless Equipment”, “Subscriber Equipment”, “Subscriber Terminal”, “Subscriber Station”, “User Terminal” (UT), “Mobile Equipment”, “Mobile Terminal”, “Mobile Station”, or variations thereof. Generally, a UE can communicate with the core network via the RAN, and through the core network, the UE can connect to external networks (such as the Internet) and other UEs. Of course, other mechanisms for connecting to the core network and / or the Internet are also possible for the UE, such as through a wired access network, a wireless local area network (WLAN) (e.g., based on IEEE 802.11, etc.).

[0032] A base station may operate according to one of several RATs to communicate with a UE, depending on the network in which it is deployed, and may be alternatively referred to as an Access Point (AP), Network Node, B-Node, Evolved B-Node (eNB), Next Generation eNB (ng-eNB), New Radio (NR) B-Node (also referred to as gNB or gNodeB), etc. A base station may primarily be used to support radio access by the UE, including supporting data, voice, and / or signaling connections with the supported UE. In some systems, the base station may provide purely edge node signaling functions, while in others, it may provide additional control and / or network management functions. The communication link through which the UE can signal to the base station is called an uplink (UL) channel (e.g., reverse traffic channel, reverse control channel, access channel, etc.). The communication link through which the base station can signal to the UE is called a downlink (DL) or forward link channel (e.g., paging channel, control channel, broadcast channel, forward traffic channel, etc.). As used herein, the term traffic channel (TCH) may refer to an uplink / reverse traffic channel or a downlink / forward traffic channel.

[0033] The term "base station" can refer to a single physical transmit / receive point (TRP) or multiple physical TRPs that may or may not be located in the same place. For example, when the term "base station" refers to a single physical TRP, the physical TRP may be a base station antenna corresponding to a cell (or several cell sectors) of the base station. When the term "base station" refers to multiple physical TRPs located in the same place, the physical TRP may be an antenna array of the base station (e.g., in a multiple-input multiple-output (MIMO) system or in the case of beamforming at the base station). When the term "base station" refers to multiple physical TRPs not located in the same place, the physical TRP may be a distributed antenna system (DAS) (a network of spatially separated antennas connected to a common source via a transmission medium) or a remote radio headend (RRH) (a remote base station connected to a serving base station). Alternatively, physical TRPs not located in the same place may be the serving base station from which the UE receives measurement reports and neighboring base stations where the UE is measuring its reference radio frequency (RF) signal (or simply "reference signal"). Since a TRP is the point from which a base station transmits and receives wireless signals, as used herein, references to transmissions from or receptions at a base station should be understood as references to the specific TRP of that base station.

[0034] In some implementations that support UE positioning, the base station may not support the UE's radio access (e.g., it may not support data, voice, and / or signaling connections regarding the UE), but may instead transmit reference signals to the UE for measurement, and / or receive and measure signals transmitted by the UE. Such a base station may be referred to as a positioning tower (e.g., in the case of transmitting signals to the UE) and / or as a location measurement unit (e.g., in the case of receiving and measuring signals from the UE).

[0035] An “RF signal” refers to an electromagnetic wave of a given frequency that transmits information across the space between a transmitter and a receiver. As used herein, a transmitter may transmit a single “RF signal” or multiple “RF signals” to a receiver. However, due to the propagation characteristics of individual RF signals through a multipath channel, a receiver may receive multiple “RF signals” corresponding to each transmitted RF signal. The same RF signal transmitted on different paths between the transmitter and receiver can be referred to as a “multipath” RF signal. As used herein, an RF signal may also be referred to as a “wireless signal” or simply a “signal,” where the context clearly indicates that the term “signal” refers to a wireless signal or an RF signal.

[0036] Figure 1 An exemplary wireless communication system 100 according to various aspects has been described. The wireless communication system 100 (also referred to as a wireless wide area network (WWAN)) may include various base stations 102 and various UEs 104. Base station 102 may include macrocell base stations (high-power cellular base stations) and / or small cell base stations (low-power cellular base stations). In one aspect, macrocell base stations may include eNBs and / or ng-eNBs (where wireless communication system 100 corresponds to an LTE network), or gNBs (where wireless communication system 100 corresponds to an NR network), or a combination of both, and small cell base stations may include femtocells, picocells, microcells, etc.

[0037] Each base station 102 can collectively form a RAN and interface with the core network 170 (e.g., an evolved packet core (EPC) or a 5G core (5GC)) via a backhaul link 122, and connect to one or more location servers 172 (which may be part of the core network 170 or external to the core network 170) via the core network 170. Among other functions, the base station 102 can also perform functions related to one or more of the following: transmitting user data, radio channel cryptography and decoding, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, connection establishment and release, load balancing, distribution of non-access stratum (NAS) messages, NAS node selection, synchronization, RAN sharing, multimedia broadcast multicast service (MBMS), subscriber and equipment tracking, RAN information management (RIM), paging, location, and delivery of alarm messages. The base stations 102 can communicate with each other directly or indirectly (e.g., via EPC / 5GC) via a backhaul link 134 (which may be wired or wireless).

[0038] Base station 102 can wirelessly communicate with UE 104. Each base station 102 can provide communication coverage for its respective geographical coverage area 110. In one aspect, one or more cells can be supported by base station 102 in each coverage area 110. A “cell” is a logical communication entity used to communicate with a base station (e.g., on a frequency resource, referred to as a carrier frequency, component carrier, carrier, frequency band, etc.) and can be associated with an identifier (e.g., Physical Cell Identifier (PCI), Virtual Cell Identifier (VCI), Cell Global Identifier (CGI)) to distinguish cells operating via the same or different carrier frequencies. In some cases, different cells can be configured according to different protocol types that can provide access to different types of UEs (e.g., Machine Type Communication (MTC), Narrowband IoT (NB-IoT), Enhanced Mobile Broadband (eMBB), or others). Since cells are supported by specific base stations, the term “cell” can refer to either or both of the logical communication entity and the base station supporting that logical communication entity, depending on the context. Additionally, since the TRP is typically the physical transmission point of a cell, the terms "cell" and "TRP" are used interchangeably. In some cases, the term "cell" can also refer to the geographical coverage area (e.g., sector) of a base station, in the sense that the carrier frequency can be detected and used for communication within a portion of a geographical coverage area 110.

[0039] While the geographic coverage areas 110 of adjacent macrocell base stations 102 may partially overlap (e.g., in handover areas), some geographic coverage areas 110 may substantially overlap with larger geographic coverage areas 110. For example, a small cell base station 102' may have a coverage area 110' that substantially overlaps with the coverage areas 110 of one or more macrocell base stations 102. A network that includes both small cell and macrocell base stations may be referred to as a heterogeneous network. A heterogeneous network may also include a home eNB (HeNB) that can provide service to a restricted group known as a Closed Subscriber Group (CSG).

[0040] The communication link 120 between base station 102 and UE 104 may include uplink (also known as reverse link) transmission from UE 104 to base station 102 and / or downlink (also known as forward link) transmission from base station 102 to UE 104. The communication link 120 may use MIMO antenna technologies, including spatial multiplexing, beamforming, and / or transmit diversity. The communication link 120 may use one or more carrier frequencies. Carrier allocation may be asymmetric with respect to the downlink and uplink (e.g., more or fewer carriers may be allocated to the downlink compared to the uplink).

[0041] The wireless communication system 100 may further include a wireless local area network (WLAN) access point (AP) 150 communicating with a WLAN station (STA) 152 via a communication link 154 in unlicensed spectrum (e.g., 5 GHz). When communicating in unlicensed spectrum, the WLAN STA 152 and / or WLAN AP 150 may perform a clear channel assessment (CCA) or listen-before-speak (LBT) procedure to determine channel availability before communication.

[0042] Small cell base station 102' can operate in licensed and / or unlicensed spectrum. When operating in unlicensed spectrum, small cell base station 102' can employ LTE or NR technology and use the same 5 GHz unlicensed spectrum as used by WLAN AP 150. Small cell base station 102' employing LTE / 5G in unlicensed spectrum can enhance access network coverage and / or increase access network capacity. NR in unlicensed spectrum may be referred to as NR-U. LTE in unlicensed spectrum may be referred to as LTE-U, Licensed Assisted Access (LAA), or MulteFire.

[0043] The wireless communication system 100 may further include a millimeter-wave (mmW) base station 180, which can operate in mmW and / or near-mmW frequencies to communicate with the UE 182. Extremely high frequency (EHF) is a portion of the electromagnetic spectrum that contains radio frequency (RF). EHF has a range of 30 GHz to 300 GHz and wavelengths between 1 mm and 10 mm. Radio waves in this band are referred to as millimeter waves. Near-mmW extends down to a frequency of 3 GHz with a wavelength of 100 mm. Ultra-high frequency (SHF) bands extend between 3 GHz and 30 GHz, and are also referred to as centimeter waves. Communication using mmW / near-mmW RF bands has high path loss and relatively short range. The mmW base station 180 and the UE 182 can utilize beamforming (transmit and / or receive) on the mmW communication link 184 to compensate for the extremely high path loss and short range. Furthermore, it will be appreciated that in alternative configurations, one or more base stations 102 may also use mmW or near-mmW and beamforming for transmission. Accordingly, it will be understood that the foregoing explanations are merely illustrative and should not be construed as limiting the aspects disclosed herein.

[0044] Transmit beamforming is a technique for focusing RF signals in a specific direction. Conventionally, when a network node (e.g., a base station) broadcasts an RF signal, it broadcasts the signal in all directions (omnidirectionally). Using transmit beamforming, the network node determines where a given target device (e.g., a UE) is located (relative to the transmitting network node) and projects a stronger downlink RF signal in that specific direction, thus providing the receiving device with a faster (in terms of data rate) and stronger RF signal. To change the directivity of the RF signal during transmission, the network node can control the phase and relative amplitude of the RF signal at each of one or more transmitters broadcasting the RF signal. For example, the network node can use an antenna array (referred to as a "phased array" or "antenna array") that generates a beam of RF waves, which can be "guided" to different directions without actually moving the antennas. Specifically, RF currents from the transmitters are fed to the individual antennas with the correct phase relationship so that radio waves from the separate antennas add together in the desired direction to increase radiation, while canceling each other out in the undesired direction to suppress radiation.

[0045] Transmit beams can be quasi-co-located, meaning they appear to the receiver (e.g., the UE) to have the same parameters regardless of whether the transmit antennas of network nodes are physically co-located. In NR, there are four types of quasi-co-location (QCL) relationships. Specifically, a given type of QCL relationship means that certain parameters of the second reference RF signal on the second beam can be derived from information about the source reference RF signal on the source beam. Therefore, if the source reference RF signal is QCL type A, the receiver can use the source reference RF signal to estimate the Doppler shift, Doppler spread, average delay, and delay spread of the second reference RF signal transmitted on the same channel. If the source reference RF signal is QCL type B, the receiver can use the source reference RF signal to estimate the Doppler shift and Doppler spread of the second reference RF signal transmitted on the same channel. If the source reference RF signal is QCL type C, the receiver can use the source reference RF signal to estimate the Doppler shift and average delay of the second reference RF signal transmitted on the same channel. If the source reference RF signal is of type QCL D, the receiver can use the source reference RF signal to estimate the spatial reception parameters of the second reference RF signal transmitted on the same channel.

[0046] In receive beamforming, a receiver uses a receive beam to amplify an RF signal detected on a given channel. For example, a receiver may increase the gain setting of an antenna array and / or adjust the phase setting of the antenna array in a specific direction to amplify the RF signal received from that direction (e.g., increase its gain level). Thus, when a receiver is referred to as beamforming in a certain direction, it means that the beam gain in that direction is higher than the beam gain along other directions, or that the beam gain in that direction is the highest compared to the beam gain of all other receive beams available to the receiver in that direction. This results in a stronger received signal strength (e.g., Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), Signal-to-Interference Plus-Noise Ratio (SINR), etc.) of the RF signal received from that direction.

[0047] The receive beam can be spatially dependent. Spatial dependency means that the parameters of the transmit beam used for the second reference signal can be derived from information about the receive beam of the first reference signal. For example, the UE can use a specific receive beam to receive one or more reference downlink reference signals (e.g., Position Reference Signal (PRS), Tracking Reference Signal (TRS), Phase Tracking Reference Signal (PTRS), Cell-Specific Reference Signal (CRS), Channel State Information Reference Signal (CSI-RS), Primary Synchronization Signal (PSS), Secondary Synchronization Signal (SSS), Synchronization Block (SSB), etc.) from the base station. The UE can then form a transmit beam based on the parameters of the receive beam to transmit one or more uplink reference signals (e.g., Uplink Position Reference Signal (UL-PRS), Detection Reference Signal (SRS), Demodulation Reference Signal (DMRS), PTRS, etc.) to the base station.

[0048] Note that, depending on the entity forming the "downlink" beam, the beam can be either a transmit beam or a receive beam. For example, if a base station is forming a downlink beam to transmit a reference signal to a UE, then the downlink beam is a transmit beam. However, if a UE is forming a downlink beam, then the downlink beam is a receive beam for receiving downlink reference signals. Similarly, depending on the entity forming the "uplink" beam, the beam can be either a transmit beam or a receive beam. For example, if a base station is forming an uplink beam, then the uplink beam is an uplink receive beam, while if a UE is forming an uplink beam, then the uplink beam is an uplink transmit beam.

[0049] In 5G, the spectrum in which radio nodes (e.g., base stations 102 / 180, UE 104 / 182) operate is divided into several frequency ranges: FR1 (from 450 to 6000 MHz), FR2 (from 24250 to 52600 MHz), FR3 (above 52600 MHz), and FR4 (between FR1 and FR2). In multi-carrier systems (such as 5G), one of the carrier frequencies is referred to as the “primary carrier” or “anchor carrier” or “primary serving cell” or “PCell,” and the remaining carrier frequencies are referred to as “secondary carriers” or “secondary serving cells” or “SCell.” In carrier aggregation, the anchor carrier is the carrier operating on the primary frequency (e.g., FR1) utilized by UE 104 / 182 and on the cell in which UE 104 / 182 performs an initial radio resource control (RRC) connection establishment procedure or initiates an RRC connection re-establishment procedure. The primary carrier carries all shared control channels as well as UE-specific control channels, and can be a carrier on a licensed frequency (however, this is not always the case). The secondary carrier is a carrier operating on a second frequency (e.g., FR2), which can be configured once an RRC connection is established between UE 104 and the anchor carrier, and can be used to provide additional radio resources. In some cases, the secondary carrier can be a carrier on an unlicensed frequency. The secondary carrier may contain only the necessary signaling information and signals; for example, UE-specific signaling information and signals may not be present on the secondary carrier, since both the primary uplink and downlink carriers are typically UE-specific. This means that different UEs 104 / 182 in a cell can have different downlink primary carriers. The same applies to the uplink primary carrier. The network can change the primary carrier of any UE 104 / 182 at any time. For example, this is done to balance the load on different carriers. Since a “serving cell” (whether PCell or SCell) corresponds to the carrier frequency / component carrier that a base station is using for communication, the terms “cell,” “serving cell,” “component carrier,” “carrier frequency,” etc., can be used interchangeably.

[0050] For example, still refer to Figure 1 One of the frequencies utilized by the macrocell base station 102 can be an anchor carrier (or "PCell"), and other frequencies utilized by the macrocell base station 102 and / or mmW base station 180 can be secondary carriers ("SCell"). Simultaneous transmission and / or reception on multiple carriers allows the UE 104 / 182 to significantly increase its data transmission and / or reception rates. For example, in a multi-carrier system, two 20 MHz aggregated carriers would theoretically result in twice the data rate (i.e., 40 MHz) compared to the data rate obtained from a single 20 MHz carrier.

[0051] The wireless communication system 100 may further include one or more UEs (such as UE 190) that are indirectly connected to one or more communication networks via one or more device-to-device (D2D) peer-to-peer (P2P) links (referred to as “side links”). Figure 1 In the example, UE 190 has a D2D P2P link 192 with a UE 104 connected to a base station 102 (e.g., UE 190 can indirectly obtain cellular connectivity from this link), and a D2D P2P link 194 with a WLANSTA 152 connected to a WLAN AP 150 (UE 190 can indirectly obtain WLAN-based Internet connectivity from this link). In one example, D2D P2P links 192 and 194 can be supported using any well-known D2D RAT (such as LTE Direct (LTE-D), WiFi Direct (WiFi-D), Bluetooth®, etc.).

[0052] The wireless communication system 100 may further include a UE 164, which can communicate with the macrocell base station 102 on the communication link 120 and / or with the mmW base station 180 on the mmW communication link 184. For example, the macrocell base station 102 may support PCell and one or more SCells for the UE 164, and the mmW base station 180 may support one or more SCells for the UE 164.

[0053] Figure 2A An example wireless network architecture 200 is explained according to various aspects. For example, the 5GC 210 (also referred to as the Next Generation Core (NGC)) can be functionally considered as control plane functions 214 (e.g., UE registration, authentication, network access, gateway selection, etc.) and user plane functions 212 (e.g., UE gateway functions, access to data networks, IP routing, etc.), which operate collaboratively to form the core network. The user plane interface (NG-U) 213 and the control plane interface (NG-C) 215 connect the gNB 222 to the 5GC 210, specifically to the control plane functions 214 and user plane functions 212. In an additional configuration, the ng-eNB 224 can also connect to the 5GC 210 via the NG-C 215 to the control plane function 214 and the NG-U 213 to the user plane function 212. Furthermore, the ng-eNB 224 can communicate directly with the gNB 222 via the backhaul connection 223. In some configurations, the new RAN 220 may have only one or more gNB 222s, while other configurations include both one or more ng-eNB 224s and one or more gNB 222s. The gNB 222 or ng-eNB 224 can be used with UE 204 (e.g., Figure 1The UE 204 can communicate with any UE depicted herein. Another optional aspect may include a location server 230, which can communicate with the 5GC 210 to provide location assistance to the UE 204. The location server 230 may be implemented as multiple separate servers (e.g., physically separate servers, different software modules on a single server, different software modules extending across multiple physical servers, etc.), or alternatively, each may correspond to a single server. The location server 230 may be configured to support one or more location services for the UE 204, which can connect to the location server 230 via the core network, the 5GC 210, and / or via the Internet (not described). Furthermore, the location server 230 may be integrated into a component of the core network, or alternatively, may be external to the core network.

[0054] Figure 2B Another example wireless network architecture 250, based on various aspects, is explained. For example, 5GC 260 can be functionally considered as both a control plane function (provided by Access and Mobility Management Function (AMF) 264) and a user plane function (provided by User Plane Function (UPF) 262), which operate collaboratively to form the core network (i.e., 5GC 260). User plane interface 263 and control plane interface 265 connect ng-eNB 224 to 5GC 260, specifically to UPF 262 and AMF 264, respectively. In an additional configuration, gNB 222 can also connect to 5GC 260 via control plane interface 265 to AMF 264 and user plane interface 263 to UPF 262. Furthermore, ng-eNB 224 can communicate directly with gNB 222 via backhaul connection 223, with or without gNB direct connectivity to 5GC 260. In some configurations, the new RAN 220 may have only one or more gNB222s, while other configurations include both one or more ng-eNB 224s and one or more gNB 222s. The gNB 222 or ng-eNB224 can be used with UE 204 (e.g., Figure 1 The base station of the new RAN 220 communicates with any UE depicted in the diagram.

[0055] The functions of AMF 264 include registration management, connection management, reachability management, mobility management, lawful interception, transmission of Session Management (SM) messages between UE 204 and Session Management Function (SMF) 266, transparent proxy service for routing SM messages, access authentication and access authorization, transmission of Short Message Service (SMS) messages between UE 204 and Short Message Service Function (SMSF) (not shown), and Security Anchor Functionality (SEAF). AMF 264 also interacts with Authentication Server Function (AUSF) (not shown) and UE 204, and receives an intermediate key established as a result of the UE 204 authentication process. In the case of authentication based on the UMTS (Universal Mobile Telecommunications System) Subscriber Identity Module (USIM), AMF 264 retrieves security material from the AUSSF. The functions of AMF 264 also include Security Context Management (SCM). The SCM receives a key from the SEAF, which is used by the SCM to derive a key that varies depending on the access network. The functionality of AMF 264 also includes: location service management for regulatory services, transmission of location service messages between UE 204 and Location Management Function (LMF) 270 (which acts as location server 230), transmission of location service messages between the new RAN 220 and LMF 270, allocation of EPS bearer identifiers for interoperability with Evolved Packet Systems (EPS), and UE 204 mobility event notification. Furthermore, AMF 264 also supports functionality for non-3GPP access networks.

[0056] The functions of UPF 262 include: acting as an anchor point for intra / inter-RAT mobility (where applicable), acting as an external Protocol Data Unit (PDU) session point interconnecting to a data network (not shown), providing packet routing and forwarding, packet inspection, user plane policy rule enforcement (e.g., gating, redirection, traffic steering), lawful interception (user plane collection), traffic usage reporting, quality of service (QoS) handling for user plane (e.g., uplink / downlink rate enforcement, reflective QoS marking in the downlink), uplink traffic verification (Service Data Flow (SDF) to QoS Flow mapping), transport-level packet marking in the uplink and downlink, downlink packet buffering and downlink data notification triggering, and sending and forwarding one or more "end markers" to the source RAN node. UPF 262 may also support the transmission of location service messages on the user plane between UE 204 and a location server (such as Secure User Plane Positioning (SUPL) Location Platform (SLP) 272).

[0057] The functions of SMF 266 include session management, UE Internet Protocol (IP) address allocation and management, selection and control of user plane functions, traffic bootstrapping configuration at UPF 262 to route traffic to the correct destination, partial control of policy enforcement and QoS, and downlink data notification. The interface used by SMF 266 to communicate with AMF 264 is called the N11 interface.

[0058] Another optional aspect may include LMF 270, which can communicate with 5GC 260 to provide location assistance to UE 204. LMF 270 can be implemented as multiple separate servers (e.g., physically separate servers, different software modules on a single server, different software modules extending across multiple physical servers, etc.), or alternatively, each may correspond to a single server. LMF 270 can be configured to support one or more location services for UE 204, which can connect to LMF 270 via the core network, 5GC 260, and / or via the Internet (not explained). SLP 272 supports similar functionality to LMF 270, but while LMF 270 can communicate with AMF 264, the new RAN 220, and UE 204 on the control plane (e.g., using interfaces and protocols designed to convey signaling messages rather than voice or data), SLP 272 can communicate with UE 204 and external clients on the user plane (e.g., using protocols designed to carry voice and / or data, such as Transmission Control Protocol (TCP) and / or IP). Figure 2B (Not shown in the image) communicates.

[0059] On one hand, the LMF 270 and / or SLP 272 can be integrated into base stations (such as gNB 222 and / or ng-eNB 224). When integrated into gNB 222 and / or ng-eNB 224, the LMF 270 and / or SLP 272 can be referred to as a Location Management Component (LMC). However, as used herein, references to LMF 270 and SLP 272 include both cases where LMF 270 and SLP 272 are components of the core network (e.g., 5GC 260) and cases where LMF 270 and SLP 272 are components of the base station.

[0060] Figure 3A , 3B The explanation of 3C includes UE 302 (which may correspond to any UE described herein), base station 304 (which may correspond to any base station described herein), and network entity 306 (which may correspond to or embody any network function described herein, including location server 230 and LMF 270, or alternatively may be independent of UE 302). Figure 2A and 2BSeveral example components (represented by corresponding boxes) in the NG-RAN 220 and / or 5GC 210 / 260 infrastructure (such as private networks) depicted herein support file transfer operations as taught herein. It will be appreciated that these components may be implemented in different types of devices (e.g., in ASICs, in System-on-Chip (SoCs), etc.) in different implementations. The illustrated components may also be incorporated into other devices in a communication system. For example, other devices in the system may include components similar to those described to provide similar functionality. Furthermore, a given device may include one or more of these components. For example, a device may include multiple transceiver components that enable the device to operate on multiple carriers and / or communicate via different technologies.

[0061] UE 302 and base station 304 each include one or more wireless wide area network (WWAN) transceivers 310 and 350, respectively, to provide means (e.g., means for transmitting, means for receiving, means for measuring, means for tuning, means for suppressing transmission, etc.) for communication via one or more wireless communication networks (not shown) (such as NR networks, LTE networks, GSM networks, etc.). WWAN transceivers 310 and 350 may each be connected to one or more antennas 316 and 356 for communication with other network nodes (such as other UEs, access points, base stations (e.g., eNB, gNB), etc.) on a wireless communication medium of interest (e.g., a time / frequency resource set in a specific spectrum) via at least one designated RAT (e.g., NR, LTE, GSM, etc.). WWAN transceivers 310 and 350 can be configured, according to a specified RAT, in various ways to transmit and encode signals 318 and 358 (e.g., messages, indications, information, etc.), and conversely, to receive and decode signals 318 and 358 (e.g., messages, indications, information, pilots, etc.). Specifically, WWAN transceivers 310 and 350 each include one or more transmitters 314 and 354 for transmitting and encoding signals 318 and 358, respectively, and each includes one or more receivers 312 and 352 for receiving and decoding signals 318 and 358, respectively.

[0062] In at least some cases, UE 302 and base station 304 each further include one or more short-range radio transceivers 320 and 360, respectively. The short-range radio transceivers 320 and 360 may be connected to one or more antennas 326 and 366, respectively, and provide means (e.g., means for transmitting, means for receiving, means for measuring, means for tuning, means for suppressing transmission, etc.) for communicating with other network nodes (such as other UEs, access points, base stations, etc.) over a wireless communication medium of interest via at least one designated RAT (e.g., WiFi, LTE-D, Bluetooth®, ZigBee®, Z-Wave®, PC5, Dedicated Short Range Communication (DSRC), Wireless Access in Vehicle Environments (WAVE), Near Field Communication (NFC), etc.). Short-range wireless transceivers 320 and 360 may be configured, in various ways according to a specified RAT, to transmit and encode signals 328 and 368 (e.g., messages, indications, information, etc.), and conversely, to receive and decode signals 328 and 368 (e.g., messages, indications, information, pilots, etc.). Specifically, short-range wireless transceivers 320 and 360 each include one or more transmitters 324 and 364 for transmitting and encoding signals 328 and 368, respectively, and one or more receivers 322 and 362 for receiving and decoding signals 328 and 368, respectively. As a specific example, short-range wireless transceivers 320 and 360 may be WiFi transceivers, Bluetooth® transceivers, Zigbee® and / or Z-Wave® transceivers, NFC transceivers, or vehicle-to-vehicle (V2V) and / or vehicle-to-everything (V2X) transceivers.

[0063] In at least some cases, UE 302 and base station 304 also include satellite signal receivers 330 and 370. Satellite signal receivers 330 and 370 may be connected to one or more antennas 336 and 376, respectively, and may each provide means for receiving and / or measuring satellite positioning / communication signals 338 and 378. When satellite signal receivers 330 and 370 are satellite positioning system receivers, satellite positioning / communication signals 338 and 378 may be Global Positioning System (GPS) signals, Global Navigation Satellite System (GLONASS) signals, Galileo signals, BeiDou signals, Indian Regional Navigation Satellite System (NAVIC), Quasi-Zenith Satellite System (QZSS), etc. When satellite signal receivers 330 and 370 are non-terrestrial network (NTN) receivers, satellite positioning / communication signals 338 and 378 may be communication signals originating from a 5G network (e.g., carrying control and / or user data). Satellite signal receivers 330 and 370 may include any suitable hardware and / or software for receiving and processing satellite positioning / communication signals 338 and 378, respectively. Satellite signal receivers 330 and 370 may request information and operations from other systems as appropriate, and in at least some cases perform calculations to determine the respective locations of UE 302 and base station 304 using measurements obtained by any suitable satellite positioning system algorithm.

[0064] Base station 304 and network entity 306 each include one or more network transceivers 380 and 390, respectively, to provide means (e.g., means for transmitting, means for receiving, etc.) for communicating with other network entities (e.g., other base stations 304, other network entities 306). For example, base station 304 may use one or more network transceivers 380 to communicate with other base stations 304 or network entities 306 on one or more wired or wireless backhaul links. As another example, network entity 306 may use one or more network transceivers 390 to communicate with one or more base stations 304 on one or more wired or wireless backhaul links, or to communicate with other network entities 306 on one or more wired or wireless core network interfaces.

[0065] Transceivers can be configured to communicate over wired or wireless links. A transceiver (whether wired or wireless) includes a transmitter circuitry (e.g., transmitters 314, 324, 354, 364) and a receiver circuitry (e.g., receivers 312, 322, 352, 362). In some implementations, the transceiver may be an integrated device (e.g., implementing the transmitter and receiver circuitry in a single device), in some implementations it may include separate transmitter and receiver circuitry, or in other implementations it may be implemented in a different manner. The transmitter and receiver circuitry of a wired transceiver (e.g., in some implementations, network transceivers 380 and 390) may be coupled to one or more wired network interface ports. Wireless transmitter circuitry (e.g., transmitters 314, 324, 354, 364) may include or be coupled to multiple antennas (e.g., antennas 316, 326, 356, 366), such as antenna arrays, which permit the corresponding device (e.g., UE 302, base station 304) to perform transmit beamforming, as described herein. Similarly, wireless receiver circuitry (e.g., receivers 312, 322, 352, 362) may include or be coupled to multiple antennas (e.g., antennas 316, 326, 356, 366), such as antenna arrays, which permit the corresponding device (e.g., UE 302, base station 304) to perform receive beamforming, as described herein. In one aspect, the transmitter and receiver circuitry may share the same multiple antennas (e.g., antennas 316, 326, 356, 366) so that the corresponding device can only receive or transmit at a given time, rather than both simultaneously. Wireless transceivers (e.g., WWAN transceivers 310 and 350, short-range wireless transceivers 320 and 360) may also include network listening modules (NLMs) for performing various measurements.

[0066] As used herein, various wireless transceivers (e.g., transceivers 310, 320, 350, and 360, and network transceivers 380 and 390 in some implementations) and wired transceivers (e.g., network transceivers 380 and 390 in some implementations) can generally be characterized as "transceiver," "at least one transceiver," or "one or more transceivers." Thus, whether a particular transceiver is a wired or wireless transceiver can be inferred from the type of communication performed. For example, backhaul communication between network devices or servers generally involves signaling via a wired transceiver, while wireless communication between a UE (e.g., UE 302) and a base station (e.g., base station 304) generally involves signaling via a wireless transceiver.

[0067] UE 302, base station 304, and network entity 306 also include other components that can be used in conjunction with operations as disclosed herein. UE 302, base station 304, and network entity 306 each include one or more processors 332, 384, and 394 for providing functionality related to, for example, wireless communication, and for providing other processing functionality. Processors 332, 384, and 394 can therefore provide means for processing, such as means for determining, means for calculating, means for receiving, means for transmitting, means for indicating, etc. In one aspect, processors 332, 384, and 394 may include, for example, one or more general-purpose processors, multi-core processors, central processing units (CPUs), ASICs, digital signal processors (DSPs), field-programmable gate arrays (FPGAs), other programmable logic devices or processing circuitry systems, or various combinations thereof.

[0068] UE 302, base station 304, and network entity 306 include memory circuitry that respectively implements memories 340, 386, and 396 (e.g., each including a memory device) for maintaining information (e.g., information indicating reserved resources, thresholds, parameters, etc.). Memories 340, 386, and 396 thus provide means for storage, means for retrieval, means for maintenance, etc. In some cases, UE 302, base station 304, and network entity 306 may respectively include positioning components 342, 388, and 398. Positioning components 342, 388, and 398 may be hardware circuitry as part of or coupled to processors 332, 384, and 394, which, when executed, cause UE 302, base station 304, and network entity 306 to perform the functionality described herein. In other respects, positioning components 342, 388, and 398 may be external to processors 332, 384, and 394 (e.g., part of a modem processing system, integrated with another processing system, etc.). Alternatively, positioning components 342, 388, and 398 may be memory modules stored in memories 340, 386, and 396, respectively, which, when executed by processors 332, 384, and 394 (or a modem processing system, another processing system, etc.), enable UE 302, base station 304, and network entity 306 to perform the functionality described herein. Figure 3A The possible locations of the positioning component 342 are described. The positioning component 342 may be, for example, part of one or more WWAN transceivers 310, memory 340, one or more processors 332, or any combination thereof, or may be a self-contained component. Figure 3BThe possible locations of the positioning component 388 are explained. The positioning component 388 may be, for example, part of one or more WWAN transceivers 350, memory 386, one or more processors 384, or any combination thereof, or may be a self-contained component. Figure 3C The possible locations of the positioning component 398 are explained. The positioning component 398 may be, for example, part of one or more network transceivers 390, memory 396, one or more processors 394, or any combination thereof, or may be a self-contained component.

[0069] UE 302 may include one or more sensors 344 coupled to one or more processors 332 to provide means for sensing or detecting motion and / or orientation information independent of motion data derived from signals received by one or more WWAN transceivers 310, one or more short-range wireless transceivers 320, and / or satellite signal receivers 330. As an example, sensor 344 may include accelerometers (e.g., microelectromechanical systems (MEMS) devices), gyroscopes, geomagnetic sensors (e.g., compasses), altimeters (e.g., barometric altimeters), and / or any other type of motion detection sensor. Furthermore, sensor 344 may include multiple different types of devices and combine their outputs to provide motion information. For example, sensor 344 may use a combination of multi-axis accelerometers and orientation sensors to provide the ability to calculate position in two-dimensional (2D) and / or three-dimensional (3D) coordinate systems.

[0070] Additionally, UE 302 includes a user interface 346, which provides means for providing instructions to the user (e.g., audible and / or visual instructions) and / or for receiving user input (e.g., when the user actuates sensing devices such as keypads, touchscreens, microphones, etc.). Although not shown, base station 304 and network entity 306 may also include user interfaces.

[0071] Referring more specifically to one or more processors 384, in the downlink, IP packets from network entity 306 may be provided to processor 384. One or more processors 384 may implement functionality for the RRC layer, Packet Data Convergence Protocol (PDCP) layer, Radio Link Control (RLC) layer, and Media Access Control (MAC) layer. One or more processors 384 may provide RRC layer functionality associated with system information (e.g., Master Information Block (MIB), System Information Block (SIB)) broadcasting, RRC connection control (e.g., RRC connection paging, RRC connection establishment, RRC connection modification, and RRC connection release), inter-RAT mobility, and measurement configuration for UE measurement reporting; PDCP layer functionality associated with header compression / decompression, security (cryptography, cryptographic decoding, integrity protection, integrity verification), and handover support functions; RLC layer functionality associated with upper-layer PDU delivery, error correction via Automatic Repeat Request (ARQ), concatenation, segmentation and reassembly of RLC Service Data Units (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, scheduling information reporting, error correction, priority handling, and logical channel priority ordering.

[0072] Transmitter 354 and receiver 352 implement Layer 1 (L1) functionality associated with various signal processing functions. Layer-1, including the physical (PHY) layer, may include error detection on the transport channel, forward error correction (FEC) decoding / decoding of the transport channel, interleaving, rate matching, mapping to the physical channel, modulation / demodulation of the physical channel, and MIMO antenna processing. Transmitter 354 processes the mapping to the signal constellation based on various modulation schemes (e.g., binary phase shift keying (BPSK), quadrature phase shift keying (QPSK), M-phase shift keying (M-PSK), M-quadrature amplitude modulation (M-QAM)). The decoded and modulated symbols can then be split into parallel streams. Each stream can then be mapped to an orthogonal frequency division multiplexing (OFDM) subcarrier, multiplexed with a reference signal (e.g., a pilot) in the time and / or frequency domains, and subsequently combined using an inverse fast Fourier transform (IFFT) to produce a physical channel carrying a time-domain OFDM symbol stream. The OFDM symbol stream is spatially precoded to generate multiple spatial streams. Channel estimates from the channel estimator can be used to determine the coding and modulation schemes, as well as for spatial processing. The channel estimates can be derived from reference signals transmitted by UE 302 and / or channel condition feedback. Each spatial stream can then be provided to one or more different antennas 356. Transmitter 354 can use the corresponding spatial stream to modulate an RF carrier for transmission.

[0073] At UE 302, receiver 312 receives signals via its corresponding antenna 316. Receiver 312 recovers the information modulated onto the RF carrier and provides this information to one or more processors 332. Transmitter 314 and receiver 312 implement Layer 1 functionality associated with various signal processing functions. Receiver 312 can perform spatial processing on this information to recover any spatial stream destined for UE 302. If multiple spatial streams are destined for UE 302, they can be combined by receiver 312 into a single OFDM symbol stream. Receiver 312 then uses a Fast Fourier Transform (FFT) to transform the OFDM symbol stream from the time domain to the frequency domain. The frequency domain signal consists of a separate OFDM symbol stream for each subcarrier of the OFDM signal. Symbols on each subcarrier, along with a reference signal, are recovered and demodulated by determining the signal constellation points most likely to be transmitted by base station 304. These soft decisions can be based on a channel estimate calculated by a channel estimator. These soft decisions are then decoded and deinterleaved to recover the original data and control signals transmitted by base station 304 over the physical channel. This data and control signals are then provided to one or more processors 332 that implement Layer 3 (L3) and Layer 2 (L2) functionality.

[0074] In the uplink, one or more processors 332 provide demultiplexing, packet reassembly, cipher decoding, header decompression, and control signal processing between the transport and logical channels to recover IP packets from the core network. One or more processors 332 are also responsible for error detection.

[0075] Similar to the functionality described in conjunction with downlink transmissions performed by base station 304, one or more processors 332 provide RRC layer functionality associated with system information (e.g., MIB, SIB) capture, RRC connectivity, and measurement reporting; PDCP layer functionality associated with header compression / decompression and security (cryptography, cryptographic decoding, integrity protection, integrity verification); RLC layer functionality associated with upper-layer PDU delivery, error correction via 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 MAC SDUs onto transport blocks (TBs), demultiplexing MAC SDUs from TBs, scheduling information reporting, error correction via Hybrid Automatic Repeat Request (HARQ), priority handling, and logical channel priority ordering.

[0076] The channel estimate derived by the channel estimator from the reference signal or feedback transmitted by the base station 304 can be used by the transmitter 314 to select an appropriate coding and modulation scheme and to facilitate spatial processing. The spatial stream generated by the transmitter 314 can be provided to different antennas 316. The transmitter 314 can use the corresponding spatial stream to modulate the RF carrier for transmission.

[0077] Uplink transmissions are handled at base station 304 in a manner similar to that described in conjunction with the receiver function at UE 302. Receiver 352 receives signals via its corresponding antenna 356. Receiver 352 recovers the information modulated onto the RF carrier and provides that information to one or more processors 384.

[0078] In the uplink, one or more processors 384 provide demultiplexing, packet reassembly, cipher decoding, header decompression, and control signal processing between the transport and logical channels to recover IP packets from UE 302. IP packets from the one or more processors 384 can be provided to the core network. The one or more processors 384 are also responsible for error detection.

[0079] For convenience, UE 302, base station 304 and / or network entity 306 are in Figure 3A , 3B The components shown in 3C are various and can be configured according to the various examples described herein. However, it will be understood that the components described may have different functionalities in different designs. Specifically, Figures 3A to 3C The various components are optional in the replacement configuration, and various aspects include configurations that can vary due to design choices, cost, equipment usage, or other considerations. For example, in Figure 3A In this scenario, a specific implementation of UE 302 may omit WWAN transceiver 310 (e.g., wearable devices, tablets, PCs, or laptops may have Wi-Fi and / or Bluetooth capabilities but no cellular capabilities), or short-range wireless transceiver 320 (e.g., cellular only), or satellite signal receiver 330, or sensor 344, etc. In another example, in Figure 3B In such cases, a particular implementation of base station 304 may omit WWAN transceiver 350 (e.g., a Wi-Fi "hotspot" access point without cellular capabilities), or short-range wireless transceiver 360 (e.g., cellular only), or satellite receiver 370, etc. For the sake of brevity, explanations of various alternative configurations are not provided herein, but will be readily understood by those skilled in the art.

[0080] Various components of UE 302, base station 304, and network entity 306 can be communicatively coupled to each other on data buses 334, 382, ​​and 392, respectively. In one aspect, data buses 334, 382, ​​and 392 can form or be part of the communication interfaces of UE 302, base station 304, and network entity 306, respectively. For example, when different logical entities are implemented in the same device (e.g., gNB and location server functionality are incorporated into the same base station 304), data buses 334, 382, ​​and 392 can provide communication between them.

[0081] Figure 3A , 3B The various components of 3C can be implemented in various ways. In some implementations, Figure 3A , Figure 3B and Figure 3C The components can be implemented in one or more circuits, such as, for example, one or more processors and / or one or more ASICs (which may include one or more processors). Here, each circuit may use and / or incorporate at least one memory component for storing information or executable code used by that circuit to provide this functionality. For example, some or all of the functionalities represented by blocks 310 to 346 may be implemented by the processor and memory components of UE 302 (e.g., by executing appropriate code and / or by appropriately configuring the processor components). Similarly, some or all of the functionalities represented by blocks 350 to 388 may be implemented by the processor and memory components of base station 304 (e.g., by executing appropriate code and / or by appropriately configuring the processor components). Furthermore, some or all of the functionalities represented by blocks 390 to 398 may be implemented by the processor and memory components of network entity 306 (e.g., by executing appropriate code and / or by appropriately configuring the processor components). For simplicity, various operations, actions, and / or functions are described herein as being performed "by the UE," "by the base station," "by the network entity," etc. However, as will be understood, such operations, actions, and / or functions can actually be performed by specific components or combinations of components of the UE 302, base station 304, network entity 306, etc., such as processors 332, 384, 394, transceivers 310, 320, 350 and 360, memory 340, 386 and 396, positioning components 342, 388 and 398, etc.

[0082] In some designs, network entity 306 may be implemented as a core network component. In other designs, network entity 306 may be a network operator or operation different from the cellular network infrastructure (e.g., NG RAN 220 and / or 5GC 210 / 260). For example, network entity 306 may be a component of a private network that can be configured to communicate with UE 302 via base station 304 or independently of base station 304 (e.g., on a non-cellular communication link, such as WiFi).

[0083] NR supports several cellular network-based positioning technologies, including downlink-based positioning methods, uplink-based positioning methods, and downlink-and-uplink-based positioning methods. Downlink-based positioning methods include: Observed Time Difference of Arrival (OTDOA) in LTE, Downlink Time Difference of Arrival (DL-TDOA) in NR, and Downlink Angle of Departure (DL-AoD) in NR. In an OTDOA or DL-TDOA positioning procedure, the UE measures the difference between the times of arrival (ToA) of reference signals (e.g., PRS, TRS, NRS, CSI-RS, SSB, etc.) received from paired base stations (referred to as Reference Signal Time Difference (RSTD) or Time Difference of Arrival (TDOA) measurements) and reports these differences to the positioning entity. More specifically, the UE receives identifiers of a reference base station (e.g., a serving base station) and multiple non-reference base stations in auxiliary data. The UE then measures the RSTD between the reference base station and each non-reference base station. Based on the known locations of the base stations involved and the RSTD measurements, the positioning entity can estimate the UE's location. For DL-AoD positioning, base station measurements are used to estimate the location of the UE by measuring the angle of the downlink transmit beam used to communicate with the UE and other channel properties (e.g., signal strength).

[0084] Uplink-based positioning methods include uplink time difference of arrival (UL-TDOA) and uplink angle of arrival (UL-AoA). UL-TDOA is similar to DL-TDOA, but it is based on an uplink reference signal (e.g., SRS) transmitted by the UE. For UL-AoA positioning, the base station measures the angle of the uplink received beam used to communicate with the UE and other channel properties (e.g., gain level) to estimate the UE's location.

[0085] Downlink and uplink-based positioning methods include Enhanced Cellular ID (E-CID) positioning and Multiple Round Trip (RTT) positioning (also known as "Multi-Cell RTT"). In an RTT procedure, the initiator (base station or UE) transmits an RTT measurement signal (e.g., PRS or SRS) to the responder (UE or base station), which then transmits an RTT response signal (e.g., SRS or PRS) back to the initiator. The RTT response signal includes the difference between the ToA of the RTT measurement signal and the transmission time of the RTT response signal (referred to as the receive-to-transmit (Rx-Tx) measurement). The initiator calculates the difference between the transmission time of the RTT measurement signal and the ToA of the RTT response signal (referred to as the "Tx-Rx" measurement). The propagation time between the initiator and the responder (also known as the "time of flight") can be calculated from the Tx-Rx and Rx-Tx measurements. Based on the propagation time and the known speed of light, the distance between the initiator and the responder can be determined. For multi-RTT positioning, the UE executes RTT procedures with multiple base stations so that the UE's location can be triangulated based on the known locations of each base station. RTT and multi-RTT methods can be combined with other positioning technologies, such as UL-AoA and DL-AoD, to improve location accuracy.

[0086] The E-CID positioning method is based on Radio Resource Management (RRM) measurements. In E-CID, the UE reports the serving cell ID, timing advance (TA), and the identifiers, estimated timings, and signal strengths of detected neighboring base stations. The UE's location is then estimated based on this information and the known locations of the base stations.

[0087] To assist in positioning operations, a location server (e.g., location server 230, LMF 270, SLP 272) may provide auxiliary data to the UE. For example, auxiliary data may include: the identifier of the base station (or the cell / TRP of the base station) from which the measured reference signal originates, reference signal configuration parameters (e.g., the number of consecutive positioning slots, the periodicity of the positioning slots, the silence sequence, the frequency hopping sequence, the reference signal identifier (ID), the reference signal bandwidth, the slot offset, etc.), and / or other parameters applicable to a particular positioning method. Alternatively, auxiliary data may originate directly from the base station itself (e.g., in periodically broadcast overhead messages, etc.). In some cases, the UE may be able to detect neighboring network nodes without using auxiliary data.

[0088] Location estimation can be referred to by other names, such as location estimation, location, positioning, location locking, locking, etc. Location estimation can be geodetic and include coordinates (e.g., latitude, longitude, and possible altitude), or it can be municipal and include street addresses, postal addresses, or some other verbal description of location. Location estimation can be further defined relative to some other known location or in absolute terms (e.g., using latitude, longitude, and possible altitude). Location estimation can include expected errors or uncertainties (e.g., by including the area or volume that the location is expected to be included with a specified or default confidence level).

[0089] Various frame structures can be used to support downlink and uplink transmissions between network nodes (e.g., base stations and UEs).

[0090] Figure 4A Figure 400 illustrates an example of a downlink frame structure according to various aspects of this disclosure.

[0091] Figure 4B Figure 430 illustrates an example of a channel within a downlink frame structure according to various aspects of this disclosure. Other wireless communication technologies may have different frame structures and / or different channels.

[0092] LTE, and in some cases NR, utilizes OFDM on the downlink and single-carrier frequency division multiplexing (SC-FDM) on the uplink. However, unlike LTE, NR also has the option to use OFDM on the uplink. OFDM and SC-FDM divide the system bandwidth into multiple (K) orthogonal subcarriers, which are often referred to as frequency modulation, frequency slots, etc. Each subcarrier can be modulated with data. Generally, modulation symbols are transmitted in the frequency domain for OFDM and in the time domain for SC-FDM. The spacing between adjacent subcarriers can be fixed, and the total number of subcarriers (K) can depend on the system bandwidth. For example, the subcarrier spacing can be 15 kHz, and the minimum resource allocation (resource block) can be 12 subcarriers (or 180 kHz). Therefore, for system bandwidths of 1.25, 2.5, 5, 10, or 20 MHz, the nominal FFT size can be equal to 128, 256, 504, 1024, or 2048, respectively. The system bandwidth can also be divided into subbands. For example, a subband can cover 1.8 MHz (i.e., 6 resource blocks), and for system bandwidths of 1.25, 2.5, 5, 10, or 20 MHz, there can be 1, 2, 4, 8, or 16 subbands, respectively.

[0093] LTE supports a single set of parameters (subcarrier spacing, symbol length, etc.). In contrast, NR can support multiple sets of parameters (µ), for example, subcarrier spacings of 15 kHz, 30 kHz, 60 kHz, 120 kHz, and 240 kHz or greater can be available. Table 1 provided below lists some of the various parameters used for different NR parameter sets.

[0094] µ SCS (kHz) Symbol / slot Time slot / subframe Time slot / frame Slot duration (ms) Symbol duration (µs) The largest nominal system BW (MHz) with a 4K FFT size. 0 15 14 1 10 1 66.7 50 1 30 14 2 20 0.5 33.3 100 2 60 14 4 40 0.25 16.7 100 3 120 14 8 80 0.125 8.33 400 4 240 14 16 160 0.0625 4.17 800

[0095] Table 1

[0096] exist Figure 4A and Figure 4B In the example, a parameter set of 15 kHz is used. Therefore, in the time domain, a 10-millisecond (ms) frame is divided into 10 equal-sized subframes, each 1 ms long, and each subframe includes one time slot. Figure 4A and 4B In this context, time is represented horizontally (e.g., on the X-axis), where time increases from left to right, while frequency is represented vertically (e.g., on the Y-axis), where frequency increases (or decreases) from bottom to top.

[0097] A resource grid is used to represent time slots, each of which includes one or more concurrent resource blocks (RBs) (also known as physical RBs (PRBs)) in the frequency domain. The resource grid is further divided into multiple resource elements (REs). An RE corresponds to one symbol length in the time domain and one subcarrier in the frequency domain. In NR, a subframe lasts 1 ms, a time slot consists of 14 symbols in the time domain, and an RB contains 12 consecutive subcarriers in the frequency domain and 14 consecutive symbols in the time domain. Therefore, in NR, there is one RB per time slot. Depending on the SCS, an NR subframe can have 14 symbols, 28 symbols, or more symbols, and therefore can have one, two, or more time slots. The number of bits carried by each RE depends on the modulation scheme.

[0098] Some REs carry downlink reference (pilot) signals (DL-RS). DL-RS may include PRS, TRS, PTRS, CRS, CSI-RS, DMRS, PSS, SSS, SSB, etc. Figure 4A An exemplary location of the RE carrying the PRS is explained (labeled "R").

[0099] A “PRS instance” or “PRS timing” is an instance of a periodically repeating time window in which a PRS is expected to be transmitted (e.g., a group of one or more consecutive time slots). A PRS timing may also be referred to as a “PRS positioning timing,” “PRS positioning instance,” “positioning timing,” “positioning instance,” “positioning repetition,” or simply “timing,” “instance,” or “repetition.”

[0100] The set of resource elements (REs) used for PRS transmission is called a "PRS resource". This set of resource elements can span multiple PRBs in the frequency domain and can span 'N' (e.g., one or more) consecutive symbols within a time slot in the time domain. In a given OFDM symbol in the time domain, the PRS resource occupies a consecutive PRB in the frequency domain.

[0101] The transmission of PRS resources within a given PRB has a specific comb tooth size (also known as "comb tooth density"). The comb tooth size 'N' represents the subcarrier spacing (or frequency / frequency modulation spacing) within each symbol of the PRS resource configuration. Specifically, for a comb tooth size 'N', the PRS is transmitted in every Nth subcarrier of a symbol in the PRB. For example, for comb tooth-4, for each of the 4th symbols of the PRS resource configuration, the RE corresponding to each 4th subcarrier (e.g., subcarriers 0, 4, 8) is used to transmit the PRS resource. Currently, comb tooth sizes 2, 4, 6, and 12 are supported for DL ​​PRS. Figure 4A An exemplary PRS resource configuration for comb tooth 6 (which spans six symbols) is explained. That is, the location of the shaded RE (marked as "R") indicates the PRS resource configuration for comb tooth 6.

[0102] A “PRS resource set” is a group of PRS resources used for the transmission of PRS signals, where each PRS resource has a PRS resource ID. Furthermore, PRS resources in a PRS resource set are associated with the same TRP. A PRS resource set is identified by a PRS resource set ID and associated with a specific TRP (identified by the TRP ID). Additionally, PRS resources in a PRS resource set share the same periodicity, a shared silent mode configuration, and the same cross-slot repetition factor (e.g., PRS-ResourceRepetitionFactor). Periodicity is the time from the first repetition of the first PRS resource in the first PRS instance to the same first repetition of the same first PRS resource in the next PRS instance. Periodicity can have a length selected from the following: 2 µ • {4, 5, 8, 10, 16, 20, 32, 40, 64, 80, 160, 320, 640, 1280, 2560, 5040, 10240} time slots, where µ = 0, 1, 2, 3. The repetition factor can have a length selected from {1, 2, 4, 6, 8, 16, 32} time slots.

[0103] In a PRS resource set, a PRS resource ID is associated with a single beam (and / or beam ID) transmitted from a single TRP (where a TRP can transmit one or more beams). That is, each PRS resource in a PRS resource set can be transmitted on a different beam, and thus, a "PRS resource" (or simply "resource") can also be referred to as a "beam". Note that this does not imply whether the UE is aware of the TRP and beam transmitting the PRS.

[0104] A “positioning frequency layer” (also simply “frequency layer”) is a collection of one or more PRS resource sets with identical values ​​for certain parameters across one or more TRPs. Specifically, the collection of PRS resource sets has the same subcarrier spacing (SCS) and cyclic prefix (CP) type (meaning all parameter sets supported by PDSCH are also supported by PRS), the same point A, the same downlink PRS bandwidth, the same starting PRB (and center frequency), and the same comb size. The point A parameter uses the value of the parameter ARFCN-ValueNR (ARFCN-ValueNR) (where “ARFCN” stands for “Absolute Radio Channel Number”) and is an identifier / code specifying the physical radio channel pair used for transmission and reception. The downlink PRS bandwidth can have a granularity of 4 PRBs, with a minimum of 24 PRBs and a maximum of 272 PRBs. Currently, up to four frequency layers have been defined, and up to two PRS resource sets can be configured per frequency layer per TRP.

[0105] The concept of a frequency layer is somewhat similar to that of component carriers and bandwidth portions (BWPs), but the difference is that component carriers and BWPs are used by a single base station (or macrocell base station and small cell base station) to transmit data channels, while a frequency layer is used by several (often three or more) base stations to transmit PRS (Positioning Signals). A UE can indicate the number of frequency layers it can support when sending its positioning capabilities to the network (such as during an LTE Positioning Protocol (LPP) session). For example, a UE can indicate whether it can support one or four positioning frequency layers.

[0106] Figure 4BExamples of various channels within the downlink time slot of a radio frame are explained. In NR, the channel bandwidth, or system bandwidth, is divided into multiple BWPs. A BWP is a set of adjacent PRBs selected from a subset of shared RBs for a given set of parameters for a given carrier. Generally, a maximum of four BWPs can be specified in both the downlink and uplink. That is, a UE can be configured to have up to four BWPs in the downlink and up to four BWPs in the uplink. Only one BWP (uplink or downlink) can be active at a given time, meaning that the UE can only receive or transmit on one BWP at a time. In the downlink, the bandwidth of each BWP should be equal to or greater than the bandwidth of the SSB, but it may or may not contain an SSB.

[0107] Reference Figure 4B The Primary Synchronization Signal (PSS) is used by the UE to determine subframe / symbol timing and physical layer identity. The Secondary Synchronization Signal (SSS) is used by the UE to determine the physical layer cell identity group number and radio frame timing. Based on the physical layer identity and physical layer cell identity group number, the UE can determine the PCI. Based on the PCI, the UE can determine the location of the aforementioned DL-RS. The Physical Broadcast Channel (PBCH) carrying the MIB can be logically grouped with the PSS and SSS to form the SSB (also known as SS / PBCH). The MIB provides the number of RBs in the downlink system bandwidth and the System Frame Number (SFN). The Physical Downlink Shared Channel (PDSCH) carries user data, broadcast system information (such as System Information Blocks (SIBs)) not transmitted through the PBCH, and paging messages.

[0108] The Physical Downlink Control Channel (PDCCH) carries Downlink Control Information (DCI) within one or more Control Channel Elements (CCEs). Each CCE includes one or more RE Group (REG) bundles (which can span multiple symbols in the time domain). Each REG bundle includes one or more REGs, and each REG corresponds to 12 resource elements (one resource block) in the frequency domain and one OFDM symbol in the time domain. The physical resource set used to carry the PDCCH / DCI is called the Control Resource Set (CORESET) in NR. In NR, the PDCCH is confined to a single CORESET and transmitted along with its own DMRS. This enables UE-specific beamforming for the PDCCH.

[0109] exist Figure 4BIn the example, each BWP has one CORESET, and this CORESET spans three symbols in the time domain (although it can be only one or two symbols). Unlike the LTE control channel, which occupies the entire system bandwidth, in NR, the PDCCH channel is localized to a specific region in the frequency domain (i.e., the CORESET). Therefore, Figure 4B The frequency components of the PDCCH shown are interpreted in the frequency domain as fewer than a single BWP. Note that although the interpreted CORESETs are contiguous in the frequency domain, they do not need to be contiguous. Additionally, a CORESET can span fewer than three symbols in the time domain.

[0110] The DCI within the PDCCH carries information about uplink resource allocation (persistent and non-persistent) and a description of the downlink data transmitted to the UE. Multiple (e.g., up to eight) DCIs can be configured in the PDCCH, and these DCIs can have one of several formats. For example, different DCI formats exist for uplink scheduling, non-MIMO downlink scheduling, MIMO downlink scheduling, and uplink power control. The PDCCH can be transmitted by 1, 2, 4, 8, or 16 CCEs to accommodate different DCI payload sizes or coding rates.

[0111] Figure 5 This is a diagram 500 illustrating how parameters in the measurement gap configuration according to various aspects of this disclosure specify the mode of the measurement gap. The Measurement Gap Repetition Period (MGRP) defines the periodicity (in milliseconds) of the measurement gap repetition. It can have values ​​of 20, 40, 80, or 160 ms, but values ​​of 320 and 640 ms are also considered. The Measurement Gap Length (MGL) is the measurement gap length in milliseconds. This measurement gap length can have values ​​of 1.5, 3, 3.5, 4, 5.5, or 6 ms, but values ​​of 10, 18, 20, 34, 40, and 50 ms are also considered. The Measurement Gap Offset (MGO) is the offset between the start of the gap mode and the start of a time slot or subframe within the Measurement Gap Repetition Period (MGRP). Currently, approximately 160 offset values ​​exist, but not all of these values ​​are applicable to all periodicities. More specifically, the offset value ranges from "0" to 1 less than the MGRP. Therefore, for example, if MGRP is 20 ms, then the offset can range from "0" to "19". Although Figure 5 Not shown, but the measurement gap configuration may also include a Measurement Gap Timing Advance (MGTA) parameter. If configured, the MGTA indicates the amount of time the measurement gap is configured to precede the occurrence of the time slot or subframe in which it begins. Currently, the MGTA can be 0.25 ms for FR2 or 0.5 ms for FR1. The measurement gap is configured using the RRC protocol.

[0112] In 3GPP Release 16 (Rel-16), UEs are not expected to process DL PRS without a measurement gap (MG) configured; UE DL PRS processing capability is defined for a single positioning frequency layer; and UE capability for simultaneous DL PRS processing across positioning frequency layers is not supported.

[0113] Figure 6 Some parameters associated with PRS measurements are explained. Figure 6 Several time slots in the time domain are shown. The PRS measurement window period (P) defines how frequently the UE will perform PRS measurements, i.e., the length of the period. Within each time slot where a PRS measurement is performed, there are two types of configurations that define how much of the time slot the UE should buffer to contain the PRS transmission. "Type 2" UE buffers the entire time slot (i.e., the UE buffers all symbols within the time slot), while "Type 1" UE buffers only the defined portion of the time slot (i.e., the UE buffers a subset of symbols within the time slot). The duration of UE buffering is called the PRS symbol duration "K".

[0114] In Rel-16, for the purpose of DL processing capability, for a Type 2 UE, the duration K ms of any DL PRS symbol within a P ms window is calculated as follows: Where S is the set of time slots containing potential DL PRS resources in the serving cell within the P ms window of the positioning frequency layer, which considers the actual nr-DL-PRS-ExpectedRSTD (nr-DL-PRS-ExpectedRSTD) and nr-DL-PRS-ExpectedRSTD-Uncertainty (nr-DL-PRS-ExpectedRSTD-Uncertainty) provided for each pair of DL PRS resource sets. Therefore, for type 2 UEs, the duration K can cover multiple time slots. For type 1 UEs, It is the integer number of OFDM symbols corresponding to the serving cell within a time slot s, measured in milliseconds. The minimum interval, which covers the union of potential PRS symbols and determines the PRS symbol occupancy within slot s, is considered, where this interval takes into account the actual nr-DL-PRS-ExpectedRSTD and nr-DL-PRS-ExpectedRSTD-Uncertainty provided for each pair of DL PRS resource sets (target and reference DL PRS resource sets). For Type 1 UEs, in other words, the value of K is equal to the length of time within a specific slot from the start of the earliest arrival at the PRS to the end of the latest arrival at the PRS.

[0115] The reference PRS indicates the expected location of the PRS in the time domain, but if Figure 6As shown, PRS received from neighboring cells may arrive at slightly different times. For New Radio (NR), the UE receives the higher-layer parameter nr-DL-PRS-ExpectedRSTD (which indicates the expected reference signal time difference (RSTD), i.e., the difference in expected UE-received DL PRS relative to the timing of the received downlink (DL) subframe) and nr-DL-PRS-ExpectedRSTD-uncertainty (which defines the search window around the expected RSTD). Figure 6 The earliest arriving neighboring PRS and the latest arriving neighboring PRS are shown.

[0116] For Type 1 UEs, the value of K (and consequently the number of symbols the UE should buffer) is partly determined by this uncertainty. Therefore, for both types of UEs, parameters P and K directly affect how much time, resources, and power the UE will spend on PRS measurements. The UE reports to the network its DL processing capability for the maximum bandwidth in MHz, such as the duration N (in ms) of the PRS symbols the UE can process per T ms, and the maximum number of PRS symbols the UE can process in each time slot. The network can respond by adjusting parameters such as those described above. The following shows an example of relevant portions of the auxiliary data that can be provided to the UE:

[0117] NR-DL-PRS-AssistanceDataPerTRP-r16 ::= SEQUENCE {

[0118] nr-DL-PRS-expectedRSTD-r16

[0119] INTEGER (-3841..3841),

[0120] nr-DL-PRS-expectedRSTD-uncerainty-r16

[0121] INTEGER (-246..246),

[0122] trp-ID-r16

[0123] TRP-ID-r16OPTIONAL,

[0124] nr-DL-PRS-Config-r16

[0125] NR-DL-PRS-Config-r16, ...

[0127] }

[0128] Figure 7 This is a flowchart of an example process 700 associated with PRS measurement window adaptation according to various aspects of this disclosure. In some implementations, Figure 7 One or more process frames can be executed by a network entity (e.g., an entity within core network 170, location server 172, etc.). In some aspects, this network entity includes a Location Management Function (LMF) or a Location Management Server (LMS). In some implementations, Figure 7 One or more process frames can be executed by another device or a group of devices that are separate from or include the network entity. Additionally or alternatively, Figure 7 One or more process frames may be executed by one or more components of network entity 306 (such as processor 394, memory 396, network transceiver 390 and positioning component 398), any or all of these components may be means for performing the operation of process 700.

[0129] like Figure 7 As shown, process 700 may include determining the Positioning Reference Signal (PRS) measurement window period value (P) and the minimum PRS symbol duration value (K) to be used by the user equipment (UE) (box 710). The means for performing the operation of box 710 may include a processor 394, a memory 396, or a network transceiver 390 of network entity 306. For example, network entity 306 may use processor 394 to determine P and K to be used by the UE based on information received via network transceiver 390 or stored in memory 396. In some aspects, the UE includes a Type 1 UE.

[0130] In some aspects, determining P involves selecting P from multiple PRS measurement window periods supported by the UE. In other aspects, determining P and K involves determining P, K, or both based on the UE's mobility state, the quality of the signals received by the UE, the necessity of the signals received by the UE, or both.

[0131] In some aspects, determining P, K, or both based on the UE's mobility state includes determining P based on the UE's location. In some aspects, determining P based on the UE's location includes: selecting a larger value for P if the UE's location is known with a certainty greater than a first threshold, and selecting a smaller value for P if the UE's location is known with a certainty less than a second threshold.

[0132] In some aspects, determining P based on the UE's mobility state includes determining P based on the UE's speed. In some aspects, determining P based on the UE's speed includes: selecting a smaller value for P if the UE's speed is greater than a first threshold, and selecting a larger value for P if the UE's speed is less than a second threshold.

[0133] In some aspects, determining P, K, or both based on the quality of the signal received by the UE includes determining P, K, or both based on the following qualities: Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), Signal-to-Interference-plus-Noise Ratio (SINR), or a combination thereof. In some aspects, determining P, K, or both based on the quality of the signal received by the UE includes: selecting a larger value for P if the quality of the signal received by the UE is greater than a first threshold, and selecting a smaller value for P if the quality of the signal received by the UE is less than a second threshold.

[0134] like Figure 7 As further shown, process 700 may include transmitting P or an indication thereof, and K or an indication thereof, to the UE for the UE to use in measuring at least one PRS (block 720). The means for performing the operation of block 720 may include network transceiver 390 of network entity 306. For example, network entity 306 may use network transceiver 390 to transmit the values ​​of P and K for the UE to use in measuring at least one PRS, or network entity 306 may transmit an index number in a table of P or K values, or other indications of the P or K values, without transmitting the values ​​themselves. In some aspects, transmitting the indication of P and K to be used by the UE includes sending the indication via a Media Access Control (MAC) control element (CE), downlink control information (DCI), or a combination thereof. In some aspects, process 700 includes receiving from the UE confirmation of the P value, K value, or both that the UE is using for PRS measurement.

[0135] In some aspects, process 700 includes receiving information from the UE specifying a plurality of PRS measurement window periods supported by the UE before transmitting an indication of P and K to be used by the UE, and wherein determining P includes selecting one of the plurality of PRS measurement window periods supported by the UE. In some aspects, receiving information specifying the plurality of PRS measurement window periods supported by the UE further includes receiving an indication of which one or more of the plurality of PRS measurement window periods supported by the UE is preferred by the UE.

[0136] In some aspects, process 700 includes: receiving from a UE a plurality of PRS measurements, the plurality of PRS measurements including measurements of a reference PRS transmitted by the UE's serving cell and at least one measurement of a PRS transmitted by neighboring cells of the serving cell; identifying from the plurality of PRS measurements the earliest PRS and the latest PRS that satisfy a measurement quality threshold; determining a K value for providing a PRS symbol duration sufficient to include the earliest PRS and the latest PRS that satisfy the measurement quality threshold; and transmitting the K value to the UE. In some aspects, the measurement quality threshold includes thresholds for reference signal received power (RSRP), reference signal received quality (RSRQ), signal-to-interference-plus-noise ratio (SINR), or combinations thereof. In some aspects, determining the K value for providing a PRS symbol duration sufficient to include the earliest PRS and the latest PRS that satisfy the measurement quality threshold includes determining a time slot timing extending from the start of the earliest PRS that satisfies the measurement quality threshold to the end of the latest PRS that satisfies the measurement quality threshold. In some respects, process 700 includes receiving confirmation from the UE of the K value that will be used by the UE.

[0137] In some aspects, process 700 includes determining a change in uncertainty associated with a PRS transmitted by a neighboring cell of the UE's serving cell and notifying the UE of the change in uncertainty. In some aspects, determining the change in uncertainty associated with a PRS transmitted by a neighboring cell of the UE's serving cell includes determining the change in uncertainty based on the certainty of the UE's location. In some aspects, the uncertainty associated with a PRS transmitted by a neighboring cell decreases as the certainty of the UE's location increases, and increases as the certainty of the UE's location decreases. In some aspects, notifying the UE of the change in uncertainty includes sending the UE an updated value of the nr-DL-PRS-ExpectedRSTD-Uncertainty parameter associated with the PRS transmitted by the neighboring cell.

[0138] Process 700 may include additional implementations, such as any single implementation or any combination of implementations described below and / or in conjunction with one or more other processes described elsewhere herein. Although Figure 7 The example box for process 700 is shown, but in some implementations, process 700 may include... Figure 7 The boxes depicted in the process are compared to additional boxes, fewer boxes, different boxes, or boxes arranged differently. Additionally or alternatively, two or more boxes in process 700 can be executed in parallel.

[0139] Figure 8This is a flowchart of an example process 800 associated with PRS measurement window adaptation according to various aspects of this disclosure. In some implementations, Figure 8 One or more process blocks can be executed by the UE (e.g., UE 104). In some implementations, Figure 8 One or more process frames can be executed by another device or a group of devices separate from or including the UE. Additionally or alternatively, Figure 8 One or more process frames may be executed by one or more components of UE 302, such as processor 332, memory 340, WWAN transceiver 310, short-range radio transceiver 320, satellite signal receiver 330, sensor 344, user interface 346, and positioning component 342, wherein any or all of the components may be means for performing the operations of process 800. In some aspects, the UE includes a Type 1 UE or a Type 2 UE.

[0140] like Figure 8 As shown, process 800 may include receiving indications from a network entity regarding the PRS measurement window period value (P) and the minimum PRS symbol duration value (K) (box 810). The means for performing the operation of box 810 may include the WWAN transceiver 310 of UE 302. For example, UE 302 may receive the indications for P and K via receiver 312. In some aspects, the network entity includes a Location Management Function (LMF) or a Location Management Server (LMS).

[0141] In some aspects, receiving indications for P and K includes receiving indications for P and K via a Media Access Control (MAC) element (CE), Downlink Control Information (DCI), or a combination thereof. In some aspects, process 800 includes sending information to a network entity specifying a plurality of PRS measurement window periods supported by the UE before receiving indications for P and K. In some aspects, sending information specifying a plurality of PRS measurement window periods supported by the UE further includes sending an indication of which one or more PRS measurement window periods among the plurality of PRS measurement window periods supported by the UE are preferred by the UE.

[0142] like Figure 8 As further shown, process 800 may include measuring at least one PRS based at least in part on the P and K (block 820). Apparatus for performing the operations of block 820 may include the processor 332, memory 340, and WWAN transceiver 310 of UE 302. For example, receiver 312 of UE 302 may use the P and K when measuring at least one PRS. In some aspects, process 800 includes sending confirmation to the network entity that the UE is using the P and K to measure at least one PRS.

[0143] In some aspects, process 800 includes receiving from the network entity an instruction to modify a P-value, a K-value, or both currently being used by the UE, and modifying the P-value, K-value, or both according to the instruction. In some aspects, process 800 includes sending an acknowledgment to the network entity that the P-value has been modified, the K-value has been modified, or both. In some aspects, receiving the instruction to modify the P-value, K-value, or both currently being used by the UE includes receiving the instruction via a Media Access Control (MAC) element (CE), Downlink Control Information (DCI), or a combination thereof.

[0144] In some aspects, process 800 may include: performing a plurality of PRS measurements, the plurality of PRS measurements including a measurement of a reference PRS transmitted by the serving cell of the UE and at least one measurement of a PRS transmitted by neighboring cells of the serving cell; identifying from the plurality of PRS measurements the earliest PRS and the latest PRS that satisfy a measurement quality threshold; determining a K value for providing a PRS symbol duration sufficient to include the earliest PRS and the latest PRS that satisfy the measurement quality threshold; and transmitting the K value to a network node. In some aspects, the measurement quality threshold includes thresholds for reference signal received power (RSRP), reference signal received quality (RSRQ), signal-to-interference-plus-noise ratio (SINR), or combinations thereof. In some aspects, determining the K value for providing a PRS symbol duration sufficient to include the earliest PRS and the latest PRS that satisfy the measurement quality threshold includes determining a time slot timing extending from the start of the earliest PRS that satisfies the measurement quality threshold to the end of the latest PRS that satisfies the measurement quality threshold. In some aspects, process 800 includes receiving an indication from the network node that the K value will be used. In some aspects, process 800 includes sending an acknowledgment to the network node that the K value will be used.

[0145] In some aspects, process 800 includes receiving from the network entity a notification of a change in uncertainty associated with a PRS transmitted by a neighboring cell of the serving cell of the UE, and modifying the K value based on the notification. In some aspects, process 800 includes sending an indication to the network entity that the K value has been modified. In some aspects, receiving the notification of the change in uncertainty includes receiving an updated value of the nr-DL-PRS-ExpectedRSTD-Uncertainty parameter associated with the PRS transmitted by the neighboring cell.

[0146] Process 800 may include additional implementations, such as any single implementation or any combination of implementations described below and / or in conjunction with one or more other processes described elsewhere herein. Although Figure 8The example box for process 800 is shown, but in some implementations, process 800 may include... Figure 8 The boxes depicted in the diagram may be fewer, different, or arranged differently compared to additional boxes. Alternatively, two or more boxes in process 800 may be executed in parallel.

[0147] Figure 9 A method 900 for wireless communication according to various aspects of this disclosure has been explained. In one aspect, method 900 can be performed by a network entity (such as LMS / LMF or other network entities). Figure 9 In this method, the steps include: at 902, transmitting information to the UE specifying two or more PRS measurement window period (P) values; at 904, selecting one of the P values ​​for the UE to use; and at 906, instructing the UE to use the selected P value. The method may also include, at 908, receiving confirmation from the UE of the P value to be used by the UE.

[0148] The implementation may include one or more of the following features. The network entity may include a Location Management Function (LMF) or a Location Management Server (LMS). Transmitting information specifying two or more P values ​​may include broadcasting the information to two or more UEs. Selecting one of these P values ​​may include selecting a P value based on the UE's mobility state and / or the quality of the signals received by the UE. The UE's mobility state may include the UE's location. Selecting one of these P values ​​may include: selecting a larger value for P if the UE's location is known with a certainty greater than a first threshold, and selecting a smaller value for P if the UE's location is known with a certainty less than a second threshold. The UE's mobility state may include the UE's speed. Selecting one of these P values ​​may include: selecting a smaller value for P if the UE's speed is greater than a first threshold, and selecting a larger value for P if the UE's speed is less than a second threshold. The quality of the signals received by the UE may include Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), and / or Signal-to-Interference-plus-Noise Ratio (SINR). Selecting one of these P values ​​may include: choosing a larger value for P if the quality of the signal received by the UE is greater than a first threshold, and choosing a smaller value for P if the quality of the signal received by the UE is less than a second threshold. Instructing the UE to use the selected P value may include sending an indication of the selected P value to the UE. Sending the indication of the selected P value may include sending the indication via a Media Access Control (MAC) element (CE) and / or Downlink Control Information (DCI). The UE may be a Type 1 UE or a Type 2 UE.

[0149] Figure 10A method 1000 for wireless communication according to various aspects of this disclosure has been explained. In one aspect, method 1000 can be performed by a network entity (such as LMS / LMF or other network entities). Figure 10 The method includes: at 1002, receiving information from a user equipment (UE) specifying two or more positioning reference signal (PRS) measurement window period (P) values ​​supported by the UE; at 1004, selecting one of the P values ​​for use by the UE; and at 1006, instructing the UE to use the selected P value. The method may also include, at 1008, receiving confirmation from the UE of the P value to be used by the UE.

[0150] The aspects may include one or more of the following features. The network entity may include a Location Management Function (LMF) or a Location Management Server (LMS). Receiving information specifying two or more P values ​​may include receiving an indication of which one or more of these P values ​​are preferred by the UE. Selecting one of these P values ​​may include selecting a P value based on the UE's mobility state and / or the quality of the signals received by the UE. The UE's mobility state may include the UE's location. Selecting one of these P values ​​may include: selecting a larger value for P if the UE's location is known with a certainty greater than a first threshold, and selecting a smaller value for P if the UE's location is known with a certainty less than a second threshold. The UE's mobility state may include the UE's speed. Selecting one of these P values ​​may include: selecting a smaller value for P if the UE's speed is greater than a first threshold, and selecting a larger value for P if the UE's speed is less than a second threshold. The quality of the signals received by the UE may include Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), and / or Signal-to-Interference-plus-Noise Ratio (SINR). Selecting one of these P values ​​may include: choosing a larger value for P if the quality of the signal received by the UE is greater than a first threshold, and choosing a smaller value for P if the quality of the signal received by the UE is less than a second threshold. Instructing the UE to use the selected P value may include sending an indication of the selected P value to the UE. Sending the indication of the selected P value may include sending the indication via a Media Access Control (MAC) element (CE) and / or Downlink Control Information (DCI). The UE may be a Type 1 UE or a Type 2 UE.

[0151] Figure 11 A method 1100 for wireless communication according to various aspects of this disclosure has been explained. In one aspect, method 1100 can be performed by a network entity (such as LMS / LMF or other network entities). Figure 11The method includes: at 1102, determining a modification to be made to the Positioning Reference Signal (PRS) measurement window period (P) value of a user equipment (UE); and at 1104, instructing the UE to make the modification to the P value. The method may include, at 1106, receiving confirmation from the UE of the modified P value to be used by the UE.

[0152] The aspects may include one or more of the following characteristics. The network entity may include a Location Management Function (LMF) or a Location Management Server (LMS). Determining the modification to the P value may include determining the modification based on the UE's mobility state and / or the quality of the signals received by the UE. The UE's mobility state may include the UE's location. The modification to be made may include: increasing the P value if the UE's location is known with greater certainty than a first threshold, and decreasing the P value if the UE's location is known with less certainty than a second threshold. The UE's mobility state may include the UE's speed. The modification to be made may include: decreasing the P value if the UE's speed is greater than a first threshold, and increasing the P value if the UE's speed is less than a second threshold. The quality of the signals received by the UE may include Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), and / or Signal-to-Interference-plus-Noise Ratio (SINR). The modification to be made may include: increasing the P value if the quality of the signals received by the UE is greater than a first threshold, and decreasing the P value if the quality of the signals received by the UE is less than a second threshold. Instructing the UE to use the selected P value may include sending an indication of the selected P value to the UE. Sending the indication of the selected P value may include sending the indication via a Media Access Control (MAC) element (CE) and / or Downlink Control Information (DCI). The UE may be a Type 1 UE or a Type 2 UE. In some aspects, this mechanism provides closed-loop control within the PRS measurement cycle. For example, when the UE's location changes rapidly, the UE is instructed to reduce its measurement cycle (i.e., perform PRS measurements more frequently), but if the UE's location changes slowly, the UE is instructed to increase its measurement cycle (i.e., perform PRS measurements less frequently).

[0153] Figure 12 A method 1200 for wireless communication according to various aspects of this disclosure has been explained. In one aspect, method 1200 can be performed by a network entity (such as LMS / LMF or other network entities). Figure 12The method includes: at 1202, receiving two or more Positioning Reference Signal (PRS) measurements from a User Equipment (UE), including measurements of a reference PRS transmitted by the UE's serving cell and at least one measurement of a PRS transmitted by neighboring cells of the serving cell; at 1204, identifying the earliest PRS and the latest PRS that satisfy a measurement quality threshold from these PRS measurements; at 1206, determining a minimum PRS symbol duration (K) value, which includes the identified earliest and latest PRS that satisfy the measurement quality threshold; and at 1208, transmitting the K value to the UE. The method may include, at 1210, receiving an acknowledgment from the UE of the K value to be used by the UE. In this manner, the network node can discard PRS measurements with low quality, such as those with RSRP, RSRP, or SINR below a certain threshold. The remaining (not discarded) PRS measurements can occupy a narrower time window than the time window occupied by the entire set of PRS measurements, in which the UE can be able to reduce the value of K, thereby saving power.

[0154] The various aspects may include one or more of the following features. The network entity may include a Location Management Function (LMF) or a Location Management Server (LMS). The measurement quality threshold may include thresholds for Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), and / or Signal-to-Interference-plus-Noise Ratio (SINR). Determining the minimum PRS symbol duration (K) value containing the earliest and latest PRS that satisfy the identified measurement quality threshold may include determining the time slot timing from the start of the earliest identified PRS that satisfies the threshold to the end of the latest identified PRS that satisfies the threshold. The UE may include a Type 1 UE.

[0155] Figure 13 A method 1300 for wireless communication according to various aspects of this disclosure has been explained. In one aspect, method 1300 can be performed by a network entity (such as LMS / LMF or other network entities). Figure 13 The method includes: at 1302, transmitting information to a user equipment (UE) specifying two or more Positioning Reference Signal (PRS) symbol duration (K) values; at 1304, selecting one of the K values ​​for use by the UE; and at 1306, instructing the UE to use the selected K value. The method may also include, at 1308, receiving confirmation from the UE of the K value to be used by the UE.

[0156] The various aspects may include one or more of the following characteristics. The network entity may include a Location Management Function (LMF) or a Location Management Server (LMS). Transmitting information specifying two or more K values ​​may include broadcasting the information to two or more UEs. Selecting one of these K values ​​may include selecting a K value based on the quality of the signal received by the UE and / or the necessity of the signal received by the UE. For example, a signal may not be necessary if it provides information that substantially replicates information provided by another signal, or if it provides little or no additional information to information provided by other signals. The quality of the signal received by the UE may include Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), and / or Signal-to-Interference-plus-Noise Ratio (SINR). Instructing the UE to use the selected K value may include sending an indication of the selected K value to the UE. Sending the indication of the selected K value may include sending the indication via a Media Access Control (MAC) Control Element (CE) and / or Downlink Control Information (DCI). The UE may include a Type 1 UE.

[0157] Figure 14 A method 1400 for wireless communication according to various aspects of this disclosure has been explained. In one aspect, method 1400 can be performed by a network entity (such as LMS / LMF or other network entities). Figure 14 The method includes: at 1402, determining a change in uncertainty associated with a location reference signal (PRS) transmitted by a neighboring cell of the serving cell; and at 1404, notifying the user equipment (UE) of the change in uncertainty. The method may include, at 1406, receiving from the UE an indication of the PRS symbol duration (K) to be used by the UE.

[0158] The aspects may include one or more of the following features. The network entity may include a Location Management Function (LMF) or a Location Management Server (LMS). Determining a change in uncertainty associated with a PRS transmitted by a neighboring cell of the serving cell may include determining the change in uncertainty based on the determinism of the UE's location. The uncertainty associated with a PRS transmitted by a neighboring cell decreases as the determinism of the UE's location increases, and increases as the determinism of the UE's location decreases. Notifying the UE of the change in uncertainty may include sending the UE an updated value of the nr-DL-PRS-ExpectedRSTD-uncertainty parameter associated with the PRS transmitted by the neighboring cell. The UE may include a Type 1 UE.

[0159] Figure 15A method 1500 for wireless communication according to various aspects of this disclosure has been explained. In one aspect, method 1500 can be performed by a UE. Figure 15 The method includes: at 1502, receiving information from a network entity specifying two or more Position Reference Signal (PRS) measurement window period (P) values; at 1504, receiving from the network entity an indication of a P value to be used; and at 1506, using the indicated P value for the PRS measurement window period. The method may also include, at 1508, sending confirmation to the network entity of the P value to be used by the UE.

[0160] Each aspect may include one or more of the following features. The network entity may include a Location Management Function (LMF) or a Location Management Server (LMS). Receiving an indication of the selected P value may include receiving the indication via a Media Access Control (MAC) Control Element (CE) and / or Downlink Control Information (DCI). The UE may include a Type 1 UE or a Type 2 UE.

[0161] Figure 16 A method 1600 for wireless communication according to various aspects of this disclosure has been explained. In one aspect, method 1600 can be performed by a UE. Figure 16 The method includes: at 1602, sending information to a network entity specifying two or more Position Reference Signal (PRS) measurement window period (P) values ​​supported by the UE; at 1604, receiving from the network entity an indication of which P value to use; and at 1606, using the indicated P value as the PRS measurement window period. The method may also include, at 1608, sending confirmation from the network entity of the P value to be used by the UE.

[0162] The aspects may include one or more of the following features. Sending information specifying two or more P values ​​may include sending an indication of which one or more of these P values ​​are preferred by the UE. The network entity may include a Location Management Function (LMF) or a Location Management Server (LMS). Receiving an indication of the selected P value may include receiving the indication via a Media Access Control (MAC) Control Element (CE) and / or Downlink Control Information (DCI). The UE may include a Type 1 UE or a Type 2 UE.

[0163] Figure 17 A method 1700 for wireless communication according to various aspects of this disclosure has been explained. In one aspect, method 1700 can be performed by a UE. Figure 17The method includes: at 1702, receiving from a network entity an instruction for modifying the measurement window period (P) value of a positioning reference signal (PRS); and at 1704, modifying the P value according to the instruction. The method may also include, at 1706, sending an acknowledgment to the network entity regarding the modified P value.

[0164] Each aspect may include one or more of the following features. The network entity may include a Location Management Function (LMF) or a Location Management Server (LMS). Receiving instructions to modify the P value may include receiving the instructions via a Media Access Control (MAC) Control Element (CE) and / or Downlink Control Information (DCI). The UE may include a Type 1 UE or a Type 2 UE.

[0165] Figure 18 A method 1800 for wireless communication according to various aspects of this disclosure has been explained. In one aspect, method 1800 can be performed by a UE. Figure 18 The method includes: at 1802, performing two or more Positioning Reference Signal (PRS) measurements, including measurements of a reference PRS transmitted by the serving cell of the UE and at least one measurement of a PRS transmitted by neighboring cells of the serving cell; at 1804, identifying the earliest PRS and the latest PRS that satisfy a measurement quality threshold from these PRS measurements; at 1806, determining a minimum PRS symbol duration (K) value containing the identified earliest and latest PRS that satisfy the measurement quality threshold; and at 1808, transmitting the K value to a network node. The method may include, at 1810, receiving an indication from the network node that the K value will be used. The method may include, at 1812, sending an acknowledgment to the network node that the K value will be used.

[0166] The various aspects may include one or more of the following features. The network entity may include a Location Management Function (LMF) or a Location Management Server (LMS). The measurement quality threshold may include thresholds for Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), and / or Signal-to-Interference-plus-Noise Ratio (SINR). Determining the minimum PRS symbol duration (K) value containing the earliest and latest PRSs that meet the identified measurement quality thresholds may include determining time slot timing from the start of the earliest identified PRS that meets the threshold to the end of the latest identified PRS that meets the threshold. The UE may include a Type 1 UE. In this manner, the UE may discard PRS measurements with low quality, such as those with RSRP, RSRP, or SINR below a certain threshold. The remaining (not discarded) PRS measurements may occupy a time window narrower than the time window occupied by the entire set of PRS measurements, whereby the UE may be able to reduce the value of K, thereby saving power.

[0167] Figure 19 A method 1900 for wireless communication according to various aspects of this disclosure has been explained. In one aspect, method 1900 can be performed by a UE. Figure 19 The method includes: at 1902, receiving information from a network entity specifying two or more Position Reference Signal (PRS) symbol duration (K) values; at 1904, receiving from the network entity an indication of a K value to be used; and at 1906, using the indicated K value for the PRS symbol duration. The method may include, at 1908, sending an acknowledgment to the network entity of the K value to be used by the UE.

[0168] The various aspects may include one or more of the following features. The network entity may include a Location Management Function (LMF) or a Location Management Server (LMS). Receiving an indication of a K value to be used from the network entity may include receiving the indication via a Media Access Control (MAC) Control Element (CE) and / or Downlink Control Information (DCI). The UE may include a Type 1 UE.

[0169] Figure 20 A method 2000 for wireless communication according to various aspects of this disclosure has been explained. In one aspect, method 2000 can be performed by a UE. Figure 20 The method includes: in 2002, receiving a notification of a change in uncertainty associated with a Location Reference Signal (PRS) transmitted by a neighboring cell of the serving cell; and in 2004, modifying a Location Reference Signal (PRS) symbol duration (K) value based on the notification. The method may include, in 2006, sending an indication to the network entity of the modified K value.

[0170] The aspects may include one or more of the following features. The network entity may include a Location Management Function (LMF) or a Location Management Server (LMS). The method of receiving notification of a change in this uncertainty may include receiving an updated value of the nr-DL-PRS-ExpectedRSTD-uncertainty parameter associated with the PRS transmitted by the neighboring cell. The UE may include a Type 1 UE.

[0171] Implementations of the described technology may include hardware, methods or processes, or computer software on a computer-accessible medium.

[0172] The techniques described in this article offer several technical benefits, including but not limited to improving device efficiency, reducing power consumption, and reducing UE complexity by reducing the amount of time the UE spends performing PRS measurements.

[0173] For example, if all measured PRS values ​​are within a small portion of the time slot, the UE can enable its RF (and perform fewer FFT operations) in a shorter duration than it would have to buffer and process the entire time slot. UE power savings can be achieved by scheduling PRS measurements within a smaller portion of the time slot. Fewer PRS measurements by the UE result in a shorter “PRS symbol duration,” which helps the UE save power by reducing its RF on-time and other baseband processing.

[0174] Furthermore, considering mobility status enables additional power consumption reductions. For example, if the UE is static, it can achieve similar positioning accuracy by simply measuring the PRS with a larger period (a larger "P"). For instance, a location server has the UE's positioning history over a period of time, so it can determine whether the UE is static or mobile. If the UE is static, the network can instruct it to measure the PRS with a larger period, which reduces the UE's power consumption. When the UE switches its state from static to mobile, the network can instruct an even higher PRS measurement period to enable UE tracking.

[0175] Those skilled in the art will appreciate that information and signals can be represented using any of a variety of different techniques and skills. For example, data, instructions, commands, information, signals, bits, symbols, and chips that may be referred to throughout the above description can be represented by voltage, current, electromagnetic waves, magnetic fields or magnetic particles, light fields or light particles, or any combination thereof.

[0176] Furthermore, those skilled in the art will appreciate that the various illustrative logic blocks, modules, circuits, and algorithmic steps described in connection with the aspects disclosed herein can be implemented as electronic hardware, computer software, or a combination of both. To clearly illustrate this interchangeability between hardware and software, the various illustrative components, blocks, modules, circuits, and steps are described above in a generalized manner in terms of their functionality. Whether such functionality is implemented as hardware or software depends on the specific application and the design constraints imposed on the overall system. Those skilled in the art may implement the described functionality in different ways for each specific application, but such implementation decisions should not be construed as departing from the scope of this disclosure.

[0177] The various illustrative logic blocks, modules, and circuits described in conjunction with the aspects disclosed herein can be implemented or executed using a general-purpose processor, DSP, ASIC, FPGA, or other programmable logic device, discrete gate or transistor logic, discrete hardware components, or any combination thereof designed to perform the functions described herein. The general-purpose processor may be a microprocessor, but in alternatives, the processor may be any conventional processor, controller, microcontroller, or state machine. The processor may also be implemented as a combination of computing devices, such as a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors cooperating with a DSP core, or any other such configuration.

[0178] The methods, sequences, and / or algorithms described in conjunction with the aspects disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of both. The software module may reside in random access memory (RAM), flash memory, read-only memory (ROM), erasable programmable ROM (EPROM), electrically erasable programmable ROM (EEPROM), registers, hard disks, removable disks, CD-ROMs, or any other form of storage medium known in the art. An exemplary storage medium is coupled to a processor such that the processor can read and write information from / to the storage medium. In an alternative, the storage medium may be integrated into the processor. The processor and storage medium may reside in an ASIC. The ASIC may reside in a user terminal (e.g., a UE). In an alternative, the processor and storage medium may reside as discrete components in the user terminal.

[0179] In one or more exemplary aspects, the described functionality may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functionality may be stored or transmitted as one or more instructions or codes on or through a computer-readable medium. A computer-readable medium includes both computer storage media and communication media, including any medium that facilitates the transfer of a computer program from one location to another. A storage medium may be any available medium accessible to a computer. By way of example and not limitation, such computer-readable media may include RAM, ROM, EEPROM, CD-ROM or other optical disc storage, disk storage or other magnetic storage devices, or any other medium that can be used to carry or store desired program code in the form of instructions or data structures and is accessible to a computer. Similarly, any connection is also legitimately referred to as a computer-readable medium. For example, if software is transmitted from a website, server, or other remote source using coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave, then such coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition of medium. As used in this article, disks and discs include compact discs (CDs), laser discs, optical discs, digital multi-purpose discs (DVDs), floppy disks, and Blu-ray discs. Disks typically reproduce data magnetically, while discs reproduce data optically using lasers. Combinations of these should also be included within the scope of computer-readable media.

[0180] While the foregoing disclosure has illustrated illustrative aspects of this disclosure, it should be noted that various changes and modifications may be made therein without departing from the scope of this disclosure as defined by the appended claims. The functions, steps, and / or actions in the method claims according to the aspects of this disclosure described herein need not be performed in any particular order. Furthermore, although elements of this disclosure may be described or claimed in the singular, pluralism is also contemplated unless explicitly stated to be limited to the singular.

[0181] In the detailed description above, it can be seen that different features are grouped together in the examples. This manner of disclosure should not be construed as an intention to have more features than those explicitly mentioned in each clause. Rather, aspects of this disclosure may include fewer features than those of the individual example clauses disclosed. Therefore, the appended clauses should thus be considered as incorporated into this description, where each clause may be a separate example. Although each dependent clause may refer in its respective clause to a specific combination with one of the other clauses, the aspects of that dependent clause are not limited to that specific combination. It will be appreciated that other example clauses may also include combinations of aspects of the dependent clause with the subject matter of any other dependent or independent clause, or any feature combined with other dependent and independent clauses. The aspects disclosed herein expressly include these combinations unless explicitly stated or readily inferred that a particular combination is not intended (e.g., contradictory aspects, such as defining an element as both an insulator and a conductor). Furthermore, it is intended that aspects of a clause may be included in any other independent clause, even if that clause is not directly subordinate to that independent clause.

[0182] Examples of implementations are described in the following numbered clauses.

[0183] Clause 1. A wireless communication method performed by a network entity, the method comprising: determining a PRS measurement window period value (P) and a minimum PRS symbol duration value (K) to be used by a UE; and transmitting to the UE an indication of P and K for the UE to use for measuring at least one PRS.

[0184] Clause 2. The method of Clause 1 further includes: receiving from the UE an acknowledgment of the P value, K value, or both that the UE is using for PRS measurement.

[0185] Clause 3. The method of any of Clauses 1 to 2, wherein determining P includes selecting P from a plurality of PRS measurement window periods supported by the UE.

[0186] Clause 4. The method of any of Clauses 1 to 3, wherein determining P and K includes determining P, K or both based on the mobility state of the UE, the quality of the signal received by the UE, the necessity of the signal received by the UE, or both.

[0187] Clause 5. The method of Clause 4, wherein P, K, or both are determined based on the mobility state of the UE, including determining P based on the location of the UE.

[0188] Clause 6. The method of Clause 5, wherein determining P based on the location of the UE comprises: selecting a larger value for P if the location of the UE is known with a certainty greater than a first threshold, and selecting a smaller value for P if the location of the UE is known with a certainty less than a second threshold.

[0189] Clause 7. The method of any of Clauses 4 to 6, wherein determining P based on the mobility state of the UE includes determining P based on the speed of the UE.

[0190] Clause 8. The method of Clause 7, wherein determining P based on the speed of the UE includes: selecting a smaller value for P if the speed of the UE is greater than a first threshold, and selecting a larger value for P if the speed of the UE is less than a second threshold.

[0191] Clause 9. The method of any of Clauses 4 to 8, wherein determining P, K, or both based on the quality of the signal received by the UE includes determining P, K, or both based on quality RSRP, RSRQ, SINR, or a combination thereof.

[0192] Clause 10. The method of Clause 9, wherein determining P, K, or both based on the quality of the signal received by the UE comprises: selecting a larger value for P if the quality of the signal received by the UE is greater than a first threshold, and selecting a smaller value for P if the quality of the signal received by the UE is less than a second threshold.

[0193] Clause 11. The method of any of Clauses 1 to 10, wherein transmitting an indication of P and K to be used by the UE includes transmitting the indication via MAC-CE, DCI or a combination thereof.

[0194] Clause 12. The method of any of Clauses 1 to 11 further comprises: receiving from the UE information specifying a plurality of PRS measurement window periods supported by the UE before transmitting an indication of P and K to be used by the UE; and wherein determining P includes selecting one of the plurality of PRS measurement window periods supported by the UE.

[0195] Clause 13. The method of Clause 12, wherein receiving information specifying a plurality of PRS measurement window periods supported by the UE further includes receiving an indication of which one or more PRS measurement window periods among the plurality of PRS measurement window periods supported by the UE are preferred by the UE.

[0196] Clause 14. The method of any of Clauses 1 to 13 further comprises: receiving from the UE a plurality of PRS measurements, the plurality of PRS measurements including a measurement of a reference PRS transmitted by the serving cell of the UE and at least one measurement of a PRS transmitted by a neighboring cell of the serving cell; identifying from the plurality of PRS measurements the earliest PRS that satisfies a measurement quality threshold and the latest PRS that satisfies the measurement quality threshold; determining a K value for providing a PRS symbol duration sufficient to include the earliest PRS that satisfies the measurement quality threshold and the latest PRS that satisfies the measurement quality threshold; and transmitting the K value to the UE.

[0197] Clause 15. The method of Clause 14 further includes: receiving from the UE an acknowledgment of the K value to be used by the UE.

[0198] Clause 16. The method of any of Clauses 14 to 15, wherein the measurement quality threshold includes thresholds for RSRP, RSRQ, SINR, or combinations thereof.

[0199] Clause 17. The method of any of Clauses 14 to 16, wherein determining the K value for providing a PRS symbol duration sufficient to include the earliest PRS that satisfies the measurement quality threshold and the latest PRS that satisfies the measurement quality threshold comprises: determining the time slot timing extending from the start of the earliest PRS that satisfies the measurement quality threshold to the end of the latest PRS that satisfies the measurement quality threshold.

[0200] Clause 18. The method of any of Clauses 14 to 17, wherein the network entity includes LMF or LMS.

[0201] Clause 19. The method of any of Clauses 14 to 18, wherein the UE includes a Type 1 UE.

[0202] Clause 20. The method of any of Clauses 1 to 19 further includes: determining a change in uncertainty associated with a PRS transmitted by a neighboring cell of the serving cell of the UE; and notifying the UE of the change in uncertainty.

[0203] Clause 21. The method of Clause 20, wherein determining the change in uncertainty associated with a PRS transmitted by a neighboring cell of the serving cell of the UE includes determining the change in uncertainty based on the certainty of the UE's location.

[0204] Clause 22. The method of Clause 21, wherein the uncertainty associated with the PRS transmitted by neighboring cells decreases as the certainty of the UE's location increases, and increases as the certainty of the UE's location decreases.

[0205] Clause 23. The method of any of Clauses 20 to 22, wherein notifying the UE of the change in uncertainty comprises sending the UE an updated value of the nr-DL-PRS-ExpectedRSTD-Uncertainty parameter associated with the PRS transmitted by the neighboring cell.

[0206] Clause 24. The method of any of Clauses 20 to 23 further includes: receiving from the UE an indication of a K value to be used by the UE.

[0207] Clause 25. A wireless communication method performed by a UE, the method comprising: receiving from a network entity an indication of a PRS measurement window period value (P) and a minimum PRS symbol duration value (K); and measuring at least one PRS based at least in part on the P and K.

[0208] Clause 26. The method of Clause 25 further includes: sending to the network entity an acknowledgment that the UE is using P and K to measure at least one PRS.

[0209] Clause 27. The method of any of Clauses 25 to 26, wherein the network entity includes LMF or LMS.

[0210] Clause 28. The method of any of Clauses 25 to 27, wherein receiving instructions on the P and K includes receiving instructions on the P and K via MAC-CE, DCI, or a combination thereof.

[0211] Clause 29. The method of any of Clauses 25 to 28, wherein the UE includes a Type 1 UE or a Type 2 UE.

[0212] Clause 30. The method of any of Clauses 25 to 29 further includes: sending information to the network entity specifying a plurality of PRS measurement window periods supported by the UE before receiving the instruction on the P and K.

[0213] Clause 31. The method of Clause 30, wherein sending information specifying a plurality of PRS measurement window periods supported by the UE further comprises: sending an indication of which one or more PRS measurement window periods among the plurality of PRS measurement window periods supported by the UE are preferred by the UE.

[0214] Clause 32. The method of any of Clauses 25 to 31 further includes: receiving from the network entity an instruction for modifying a P value, a K value, or both that is being used by the UE; and modifying the P value, K value, or both according to the instruction.

[0215] Clause 33. The method of Clause 32 further includes: sending confirmation to the network entity that the P value has been modified, the K value has been modified, or both.

[0216] Clause 34. The method of any of Clauses 32 to 33, wherein receiving an instruction for modifying a P value, a K value, or both used by the UE comprises receiving the instruction via MAC-CE, DCI, or a combination thereof.

[0217] Clause 35. The method of any of Clauses 25 to 34 further comprises: performing a plurality of PRS measurements, the plurality of PRS measurements including a measurement of a reference PRS transmitted by the serving cell of the UE and at least one measurement of a PRS transmitted by a neighboring cell of the serving cell; identifying from the plurality of PRS measurements the earliest PRS that satisfies a measurement quality threshold and the latest PRS that satisfies the measurement quality threshold; determining a K value that provides a PRS symbol duration sufficient to include the earliest PRS that satisfies the measurement quality threshold and the latest PRS that satisfies the measurement quality threshold; and transmitting the K value to a network node.

[0218] Clause 36. The method of Clause 35, wherein determining the K value for providing a PRS symbol duration sufficient to include the earliest PRS that satisfies the measurement quality threshold and the latest PRS that satisfies the measurement quality threshold comprises: determining the time slot timing extending from the start of the earliest PRS that satisfies the measurement quality threshold to the end of the latest PRS that satisfies the measurement quality threshold.

[0219] Clause 37. The method of any of Clauses 35 to 36 further includes: receiving from the network node an indication to use the K value.

[0220] Clause 38. The method of any of Clauses 36 to 37 further includes: sending an acknowledgment to the network node that the K value will be used.

[0221] Clause 39. The method of any of Clauses 35 to 38, wherein the measurement quality threshold includes thresholds for RSRP, RSRQ, SINR, or combinations thereof.

[0222] Clause 40. The method of any of Clauses 25 to 39 further includes: receiving from the network entity a notification of a change in uncertainty associated with a PRS transmitted by a neighboring cell of the serving cell of the UE; and modifying the K value based on the notification.

[0223] Clause 41. The method of Clause 40 further includes: sending an indication to the network entity that the K value has been modified.

[0224] Clause 42. The method of any of Clauses 40 to 41, wherein receiving notification of a change in the uncertainty comprises receiving an updated value of the nr-DL-PRS-ExpectedRSTD-Uncertainty parameter associated with the PRS transmitted by the neighboring cell.

[0225] Clause 43. A network entity comprising: a memory; at least one transceiver; and at least one processor communicatively coupled to the memory and the at least one transceiver, the at least one processor being configured to: determine a PRS measurement window period value (P) and a minimum PRS symbol duration value (K) to be used by a UE; and transmit instructions for P and K to the UE via the at least one transceiver for the UE to use in measuring at least one PRS.

[0226] Clause 44. A network entity as described in Clause 43, wherein the at least one processor is further configured to receive, via the at least one transceiver, an acknowledgment from the UE of a P-value, K-value, or both that the UE is using for PRS measurements.

[0227] Clause 45. A network entity as described in any of Clauses 43 to 44, wherein, in order to determine P, the at least one processor is configured to select P from a plurality of PRS measurement window periods supported by the UE.

[0228] Clause 46. A network entity as described in any of Clauses 43 to 45, wherein, in order to determine P and K, the at least one processor is configured to determine P, K, or both based on the mobility state of the UE, the quality of the signal received by the UE, the necessity of the signal received by the UE, or both.

[0229] Clause 47. A network entity as described in Clause 46, wherein, in order to determine P, K, or both based on the mobility state of the UE, the at least one processor is configured to determine P based on the location of the UE.

[0230] Clause 48. A network entity as described in Clause 47, wherein, in order to determine P based on the location of the UE, the at least one processor is configured to: select a larger value for P if the location of the UE is known with a certainty greater than a first threshold, and select a smaller value for P if the location of the UE is known with a certainty less than a second threshold.

[0231] Clause 49. A network entity as described in any of Clauses 46 to 48, wherein, in order to determine P based on the mobility state of the UE, the at least one processor is configured to determine P based on the speed of the UE.

[0232] Clause 50. A network entity as described in Clause 49, wherein, in order to determine P based on the speed of the UE, the at least one processor is configured to: select a smaller value for P if the speed of the UE is greater than a first threshold, and select a larger value for P if the speed of the UE is less than a second threshold.

[0233] Clause 51. A network entity as described in any of Clauses 46 to 50, wherein, in order to determine P, K, or both based on the quality of the signal received by the UE, the at least one processor is configured to determine P, K, or both based on quality RSRP, RSRQ, SINR, or a combination thereof.

[0234] Clause 52. A network entity as described in Clause 51, wherein, in order to determine P, K, or both based on the quality of the signal received by the UE, the at least one processor is configured to: select a larger value for P if the quality of the signal received by the UE is greater than a first threshold, and select a smaller value for P if the quality of the signal received by the UE is less than a second threshold.

[0235] Clause 53. A network entity as described in any of Clauses 43 to 52, wherein, in order to transmit an indication of P and K to be used by the UE, the at least one processor is configured to transmit the indication via MAC-CE, DCI, or a combination thereof.

[0236] Clause 54. A network entity as described in any of Clauses 43 to 53, wherein the at least one processor is further configured to: receive from the UE information specifying a plurality of PRS measurement window periods supported by the UE before transmitting an indication of P and K to be used by the UE; and wherein, in order to determine P, the at least one processor is configured to select one of the plurality of PRS measurement window periods supported by the UE.

[0237] Clause 55. A network entity as described in Clause 54, wherein, in order to receive information specifying a plurality of PRS measurement window periods supported by the UE, the at least one processor is configured to: receive an indication of which one or more PRS measurement window periods among the plurality of PRS measurement window periods supported by the UE is preferred by the UE.

[0238] Clause 56. A network entity as described in any one of Clauses 43 to 55, wherein the at least one processor is further configured to: receive from the UE a plurality of PRS measurements via the at least one transceiver, the plurality of PRS measurements including a measurement of a reference PRS transmitted by the serving cell of the UE and at least one measurement of a PRS transmitted by a neighboring cell of the serving cell; identify from the plurality of PRS measurements the earliest PRS that satisfies a measurement quality threshold and the latest PRS that satisfies the measurement quality threshold; determine a K value that provides a PRS symbol duration sufficient to include the earliest PRS that satisfies the measurement quality threshold and the latest PRS that satisfies the measurement quality threshold; and transmit the K value to the UE via the at least one transceiver.

[0239] Clause 57. A network entity as described in Clause 56, wherein the at least one processor is further configured to receive, via the at least one transceiver, an acknowledgment of a K value to be used by the UE.

[0240] Clause 58. A network entity as described in any of Clauses 56 to 57, wherein the measurement quality threshold includes thresholds for RSRP, RSRQ, SINR, or combinations thereof.

[0241] Clause 59. A network entity as described in any of Clauses 56 to 58, wherein, in order to determine a K value for providing a PRS symbol duration sufficient to include the earliest PRS that satisfies the measurement quality threshold and the latest PRS that satisfies the measurement quality threshold, the at least one processor is configured to: determine a time slot timing extending from the start of the earliest PRS that satisfies the measurement quality threshold to the end of the latest PRS that satisfies the measurement quality threshold.

[0242] Clause 60. A network entity as described in any of Clauses 56 to 59, wherein the network entity includes LMF or LMS.

[0243] Clause 61. A network entity as described in any of Clauses 56 to 60, wherein the UE includes a Type 1 UE.

[0244] Clause 62. A network entity as described in any of Clauses 43 to 61, wherein the at least one processor is further configured to: determine a change in uncertainty associated with a PRS transmitted by a neighboring cell of the serving cell of the UE; and notify the UE of the change in uncertainty.

[0245] Clause 63. A network entity as described in Clause 62, wherein, in order to determine a change in uncertainty associated with a PRS transmitted by a neighboring cell of the serving cell of the UE, the at least one processor is configured to determine the change in uncertainty based on the certainty of the UE's location.

[0246] Clause 64. A network entity as described in Clause 63, wherein the uncertainty associated with a PRS transmitted by a neighboring cell decreases as the certainty of the UE's location increases and increases as the certainty of the UE's location decreases.

[0247] Clause 65. A network entity as described in any of Clauses 62 to 64, wherein, in order to notify the UE of the change in uncertainty, the at least one processor is configured to send the UE an updated value of the nr-DL-PRS-ExpectedRSTD-Uncertainty parameter associated with the PRS transmitted by the neighboring cell.

[0248] Clause 66. A network entity as described in any of Clauses 62 to 65, wherein the at least one processor is further configured to receive, via the at least one transceiver, an indication of a K value to be used by the UE.

[0249] Clause 67. A UE comprising: a memory; at least one transceiver; and at least one processor communicatively coupled to the memory and the at least one transceiver, the at least one processor being configured to: receive from a network entity via the at least one transceiver an indication of a PRS measurement window period value (P) and a minimum PRS symbol duration value (K); and use the P and K to measure at least one PRS.

[0250] Clause 68. The UE as in Clause 67, wherein the at least one processor is further configured to: transmit to the network entity via the at least one transceiver an acknowledgment that the UE is using P and K to measure at least one PRS.

[0251] Clause 69. The UE of any of Clauses 67 to 68, wherein the network entity includes LMF or LMS.

[0252] Clause 70. The UE of any of Clauses 67 to 69, wherein, in order to receive the instruction on P and K, the at least one processor is configured to receive the instruction on P and K via MAC-CE, DCI, or a combination thereof.

[0253] Clause 71. A UE such as any of Clauses 67 to 70, wherein the UE includes a Type 1 UE or a Type 2 UE.

[0254] Clause 72. A UE as described in any of Clauses 67 to 71, wherein the at least one processor is further configured to: send information to the network entity specifying a plurality of PRS measurement window periods supported by the UE before receiving an instruction on the P and K.

[0255] Clause 73. The UE as described in Clause 72, wherein, in order to send information specifying a plurality of PRS measurement window periods supported by the UE, the at least one processor is configured to: send an indication of which one or more PRS measurement window periods among the plurality of PRS measurement window periods supported by the UE are preferred by the UE.

[0256] Clause 74. The UE of any of Clauses 67 to 73, wherein the at least one processor is further configured to: receive from the network entity via the at least one transceiver an instruction for modifying a P value, a K value, or both used by the UE; and modify the P value, K value, or both according to the instruction.

[0257] Clause 75. The UE as in Clause 74, wherein the at least one processor is further configured to: send an acknowledgment to the network entity via the at least one transceiver that the P value has been modified, the K value has been modified, or both.

[0258] Clause 76. The UE of any of Clauses 74 to 75, wherein, in order to receive an instruction for modifying a P value, a K value, or both used by the UE, the at least one processor is configured to receive the instruction via MAC-CE, DCI, or a combination thereof.

[0259] Clause 77. The UE of any of Clauses 67 to 76, wherein the at least one processor is further configured to: perform a plurality of PRS measurements, the plurality of PRS measurements including a measurement of a reference PRS transmitted by the serving cell of the UE and at least one measurement of a PRS transmitted by a neighboring cell of the serving cell; identify from the plurality of PRS measurements the earliest PRS that satisfies a measurement quality threshold and the latest PRS that satisfies the measurement quality threshold; determine a K value that provides a PRS symbol duration sufficient to include the earliest PRS that satisfies the measurement quality threshold and the latest PRS that satisfies the measurement quality threshold; and transmit the K value to a network node via the at least one transceiver.

[0260] Clause 78. The UE of Clause 77, wherein, in order to determine a K value for providing a PRS symbol duration sufficient to include the earliest PRS that satisfies the measurement quality threshold and the latest PRS that satisfies the measurement quality threshold, the at least one processor is configured to: determine a time slot timing extending from the start of the earliest PRS that satisfies the measurement quality threshold to the end of the latest PRS that satisfies the measurement quality threshold.

[0261] Clause 79. The UE of any of Clauses 77 to 78, wherein the at least one processor is further configured to receive, via the at least one transceiver, an indication from the network node to use the K value.

[0262] Clause 80. The UE of any of Clauses 78 to 79, wherein the at least one processor is further configured to: send an acknowledgment via the at least one transceiver to the network node that the K value will be used.

[0263] Clause 81. For any UE of Clauses 77 to 80, wherein the measurement quality threshold includes thresholds for RSRP, RSRQ, SINR, or combinations thereof.

[0264] Clause 82. A UE as described in any of Clauses 67 to 81, wherein the at least one processor is further configured to: receive, via the at least one transceiver, a notification from the network entity of a change in uncertainty associated with a PRS transmitted by a neighboring cell of the UE's serving cell; and modify the K value based on the notification.

[0265] Clause 83. The UE as in Clause 82, wherein the at least one processor is further configured to: send an indication to the network entity via the at least one transceiver that the K value has been modified.

[0266] Clause 84. The UE of any of Clauses 82 to 83, wherein, in order to receive notification of a change in the uncertainty, the at least one processor is configured to: receive an updated value of the nr-DL-PRS-ExpectedRSTD-Uncertainty parameter associated with the PRS transmitted by the neighboring cell.

[0267] Clause 85. A network entity comprising: means for determining a PRS measurement window period value (P) and a minimum PRS symbol duration value (K) to be used by a UE; and means for transmitting instructions to the UE regarding P and K for the UE to use in measuring at least one PRS.

[0268] Clause 86. The network entity as described in Clause 85 further includes: means for receiving from the UE an acknowledgment of a P-value, K-value, or both that the UE is using for PRS measurement.

[0269] Clause 87. A network entity as described in any of Clauses 85 to 86, wherein the means for determining P includes means for selecting P from a plurality of PRS measurement window periods supported by the UE.

[0270] Clause 88. A network entity as described in any of Clauses 85 to 87, wherein the means for determining the P and K includes means for determining the P, K, or both based on the mobility state of the UE, the quality of the signal received by the UE, the necessity of the signal received by the UE, or both.

[0271] Clause 89. A network entity as described in Clause 88, wherein means for determining P, K, or both based on the mobility state of the UE includes means for determining P based on the location of the UE.

[0272] Clause 90. A network entity as described in Clause 89, wherein the means for determining P based on the location of the UE includes: means for selecting a larger value for P if the location of the UE is known with a certainty greater than a first threshold, and for selecting a smaller value for P if the location of the UE is known with a certainty less than a second threshold.

[0273] Clause 91. A network entity as described in any of Clauses 88 to 90, wherein the means for determining P based on the mobility state of the UE includes means for determining P based on the speed of the UE.

[0274] Clause 92. A network entity as described in Clause 91, wherein the means for determining P based on the speed of the UE includes: means for selecting a smaller value for P if the speed of the UE is greater than a first threshold, and for selecting a larger value for P if the speed of the UE is less than a second threshold.

[0275] Clause 93. A network entity as described in any of Clauses 88 to 92, wherein the means for determining P, K, or both based on the quality of the signal received by the UE includes means for determining P, K, or both based on quality RSRP, RSRQ, SINR, or a combination thereof.

[0276] Clause 94. A network entity as described in Clause 93, wherein the means for determining P, K, or both based on the quality of a signal received by the UE includes: means for selecting a larger value for P if the quality of the signal received by the UE is greater than a first threshold, and for selecting a smaller value for P if the quality of the signal received by the UE is less than a second threshold.

[0277] Clause 95. A network entity as described in any of Clauses 85 to 94, wherein the means for transmitting an indication of P and K to be used by the UE includes means for transmitting the indication via MAC-CE, DCI, or a combination thereof.

[0278] Clause 96. A network entity as described in any of Clauses 85 to 95 further includes: means for receiving from the UE, prior to transmitting an indication of P and K to be used by the UE, information specifying a plurality of PRS measurement window periods supported by the UE; and wherein the means for determining P includes means for selecting one of the plurality of PRS measurement window periods supported by the UE.

[0279] Clause 97. A network entity as described in Clause 96, wherein the means for receiving information specifying a plurality of PRS measurement window periods supported by the UE further includes means for receiving an indication of which one or more PRS measurement window periods among the plurality of PRS measurement window periods supported by the UE are preferred by the UE.

[0280] Clause 98. A network entity as described in any one of Clauses 85 to 97 further includes: means for receiving a plurality of PRS measurements from the UE, the plurality of PRS measurements including a measurement of a reference PRS transmitted by the serving cell of the UE and at least one measurement of a PRS transmitted by a neighboring cell of the serving cell; means for identifying, from the plurality of PRS measurements, the earliest PRS that satisfies a measurement quality threshold and the latest PRS that satisfies the measurement quality threshold; means for determining a K value that provides a PRS symbol duration sufficient to include the earliest PRS that satisfies the measurement quality threshold and the latest PRS that satisfies the measurement quality threshold; and means for transmitting the K value to the UE.

[0281] Clause 99. A network entity as described in Clause 98 further includes: means for receiving from the UE an acknowledgment of a K value to be used by the UE.

[0282] Clause 100. A network entity as described in any of Clauses 98 to 99, wherein the measurement quality threshold includes thresholds for RSRP, RSRQ, SINR, or combinations thereof.

[0283] Clause 101. A network entity as described in any of Clauses 98 to 100, wherein the means for determining a K value for providing a PRS symbol duration sufficient to include the earliest PRS that satisfies the measurement quality threshold and the latest PRS that satisfies the measurement quality threshold comprises: means for determining a time slot timing extending from the start of the earliest PRS that satisfies the measurement quality threshold to the end of the latest PRS that satisfies the measurement quality threshold.

[0284] Clause 102. A network entity as described in any of Clauses 98 to 101, wherein the network entity includes LMF or LMS.

[0285] Clause 103. A network entity as described in any of Clauses 98 to 102, wherein the UE includes a Type 1 UE.

[0286] Clause 104. A network entity as described in any of Clauses 85 to 103 further includes: means for determining a change in uncertainty associated with a PRS transmitted by a neighboring cell of the serving cell of the UE; and means for notifying the UE of the change in uncertainty.

[0287] Clause 105. A network entity as described in Clause 104, wherein the means for determining a change in uncertainty associated with a PRS transmitted by a neighboring cell of the serving cell of the UE includes means for determining the change in uncertainty based on the certainty of the UE's location.

[0288] Clause 106. A network entity as described in Clause 105, wherein the uncertainty associated with the PRS transmitted by neighboring cells decreases as the certainty of the UE's location increases and increases as the certainty of the UE's location decreases.

[0289] Clause 107. A network entity as described in any of Clauses 104 to 106, wherein the means for notifying the UE of the change in uncertainty includes means for sending the UE an updated value of the nr-DL-PRS-ExpectedRSTD-Uncertainty parameter associated with the PRS transmitted by the neighboring cell.

[0290] Clause 108. A network entity as described in any of Clauses 104 to 107 further includes: means for receiving from the UE an indication of a K value to be used by the UE.

[0291] Clause 109. A UE comprising: means for receiving from a network entity an indication of a PRS measurement window period value (P) and a minimum PRS symbol duration value (K); and means for using the P and K to measure at least one PRS.

[0292] Clause 110. The UE as described in Clause 109 further includes: means for sending to the network entity an acknowledgment that the UE is using P and K to measure at least one PRS.

[0293] Clause 111. The UE of any of Clauses 109 to 110, wherein the network entity includes LMF or LMS.

[0294] Clause 112. For any of Clauses 109 to 111, the means for receiving the indication of the P and K includes means for receiving the indication of the P and K via MAC-CE, DCI or a combination thereof.

[0295] Clause 113. The UE of any of Clauses 109 to 112, wherein the UE includes a Type 1 UE or a Type 2 UE.

[0296] Clause 114. The UE of any of Clauses 109 to 113 further includes: means for sending information specifying a plurality of PRS measurement window periods supported by the UE to the network entity before receiving an instruction on the P and K.

[0297] Clause 115. The UE of Clause 114, wherein the means for transmitting information specifying a plurality of PRS measurement window periods supported by the UE further includes means for transmitting an indication of which one or more PRS measurement window periods among the plurality of PRS measurement window periods supported by the UE are preferred by the UE.

[0298] Clause 116. The UE of any of Clauses 109 to 115 further includes: means for receiving from the network entity an instruction for modifying a P value, a K value, or both currently being used by the UE; and means for modifying the P value, K value, or both according to the instruction.

[0299] Clause 117. The UE as described in Clause 116 further includes: means for sending confirmation to the network entity that the P value has been modified, the K value has been modified, or both.

[0300] Clause 118. For any of Clauses 116 to 117, the means for receiving an instruction for modifying a P value, a K value, or both used by the UE includes means for receiving the instruction via MAC-CE, DCI, or a combination thereof.

[0301] Clause 119. The UE of any of Clauses 109 to 118 further includes: means for performing a plurality of PRS measurements, the plurality of PRS measurements including a measurement of a reference PRS transmitted by the serving cell of the UE and at least one measurement of a PRS transmitted by a neighboring cell of the serving cell; means for identifying, from the plurality of PRS measurements, the earliest PRS that satisfies a measurement quality threshold and the latest PRS that satisfies the measurement quality threshold; means for determining a K value that provides a PRS symbol duration sufficient to include the earliest PRS that satisfies the measurement quality threshold and the latest PRS that satisfies the measurement quality threshold; and means for transmitting the K value to a network node.

[0302] Clause 120. The UE of Clause 119, wherein the means for determining a K value for providing a PRS symbol duration sufficient to include the earliest PRS that satisfies the measurement quality threshold and the latest PRS that satisfies the measurement quality threshold includes: means for determining a time slot timing extending from the start of the earliest PRS that satisfies the measurement quality threshold to the end of the latest PRS that satisfies the measurement quality threshold.

[0303] Clause 121. The UE of any of Clauses 119 to 120 further includes: means for receiving from the network node an indication to use the K value.

[0304] Clause 122. The UE of any of Clauses 120 to 121 further includes: means for sending an acknowledgment to the network node that the K value will be used.

[0305] Clause 123. UE as in any of Clauses 119 to 122, wherein the measurement quality threshold includes thresholds for RSRP, RSRQ, SINR, or combinations thereof.

[0306] Clause 124. The UE of any of Clauses 109 to 123 further includes: means for receiving from the network entity a notification of a change in uncertainty associated with a PRS transmitted by a neighboring cell of the serving cell of the UE; and means for modifying a K value based on the notification.

[0307] Clause 125. The UE as described in Clause 124 further includes means for sending an indication to the network entity that the K value has been modified.

[0308] Clause 126. For any of Clauses 124 to 125, the means for receiving notification of a change in the uncertainty includes means for receiving an updated value of the nr-DL-PRS-ExpectedRSTD-Uncertainty parameter associated with the PRS transmitted by the neighboring cell.

[0309] Clause 127. A non-transient computer-readable medium storing computer-executable instructions that, when executed by a network entity, cause the network entity to: determine a PRS measurement window period value (P) and a minimum PRS symbol duration value (K) to be used by a UE; and transmit instructions to the UE regarding P and K for the UE to use in measuring at least one PRS.

[0310] Clause 128. The non-transient computer-readable medium of Clause 127 further includes, when executed by a network entity, instructions that cause the network entity to perform the following actions: receive from the UE an acknowledgment of the P-value, K-value, or both that the UE is using for PRS measurements.

[0311] Clause 129. A non-transient computer-readable medium such as any of Clauses 127 to 128, wherein The computer-executable instruction that causes the network entity to determine P at execution includes a computer-executable instruction that causes the network entity to select P from multiple PRS measurement window periods supported by the UE at execution.

[0312] Clause 130. A non-transitory computer-readable medium such as any of Clauses 127 to 129, wherein Computer-executable instructions that cause the network entity to determine P and K at execution include computer-executable instructions that cause the network entity to determine P, K, or both based on the mobility state of the UE, the quality of the signals received by the UE, the necessity of the signals received by the UE, or both.

[0313] Clause 131. A non-transient computer-readable medium as described in Clause 130, wherein a computer-executable instruction which, upon execution, causes the network entity to determine P, K, or both based on the mobility state of the UE includes a computer-executable instruction which, upon execution, causes the network entity to determine P based on the location of the UE.

[0314] Clause 132. A non-transient computer-readable medium as described in Clause 131, wherein a computer-executable instruction that, when executed, causes the network entity to determine P based on the location of the UE includes a computer-executable instruction that, when executed, causes the network entity to perform the following operations: if the location of the UE is known with a certainty greater than a first threshold, a larger value is selected for P, and if the location of the UE is known with a certainty less than a second threshold, a smaller value is selected for P.

[0315] Clause 133. A non-transient computer-readable medium such as any of Clauses 130 to 132, wherein The computer-executable instructions that cause the network entity to determine P based on the mobility state of the UE include computer-executable instructions that cause the network entity to determine P based on the speed of the UE during execution.

[0316] Clause 134. A non-transient computer-readable medium as described in Clause 133, wherein a computer-executable instruction that, when executed, causes the network entity to determine P based on the speed of the UE includes a computer-executable instruction that, when executed, causes the network entity to perform the following actions: if the speed of the UE is greater than a first threshold, select a smaller value for P, and if the speed of the UE is less than a second threshold, select a larger value for P.

[0317] Clause 135. A non-transient computer-readable medium such as any of Clauses 130 to 134, wherein Computer-executable instructions that cause the network entity to determine P, K, or both based on the quality of the signal received by the UE during execution include computer-executable instructions that cause the network entity to determine P, K, or both based on the quality RSRP, RSRQ, SINR, or a combination thereof during execution.

[0318] Clause 136. A non-transient computer-readable medium as described in Clause 135, wherein a computer-executable instruction which, when executed, causes the network entity to determine P, K, or both based on the quality of a signal received by the UE includes a computer-executable instruction which, when executed, causes the network entity to perform the following operations: if the quality of the signal received by the UE is greater than a first threshold, then select a larger value for P, and if the quality of the signal received by the UE is less than a second threshold, then select a smaller value for P.

[0319] Clause 137. A non-transient computer-readable medium such as any of Clauses 127 to 136, wherein Computer-executable instructions that cause the network entity to transmit instructions for P and K to be used by the UE during execution include computer-executable instructions that cause the network entity to send the instructions via MAC-CE, DCI or a combination thereof during execution.

[0320] Clause 138. A non-transient computer-readable medium such as any of Clauses 127 to 137 further includes instructions which, when executed by a network entity, further cause the network entity to perform the following operations: receiving information from the UE specifying a plurality of PRS measurement window periods supported by the UE before transmitting indications of P and K to be used by the UE; and wherein the computer-executable instructions which, when executed, cause the network entity to determine P include computer-executable instructions which, when executed, cause the network entity to select one of the plurality of PRS measurement window periods supported by the UE.

[0321] Clause 139. A non-transient computer-readable medium as described in Clause 138, wherein computer-executable instructions, when executed, cause the network entity to receive information specifying a plurality of PRS measurement window periods supported by the UE, comprising: computer-executable instructions, when executed, causing the network entity to receive an indication of which one or more PRS measurement window periods among the plurality of PRS measurement window periods supported by the UE are preferred by the UE.

[0322] Clause 140. A non-transient computer-readable medium such as any of Clauses 127 to 139 further includes, when performed by a network entity, instructions to further cause the network entity to perform the following operations: receive from the UE a plurality of PRS measurements, the plurality of PRS measurements including a measurement of a reference PRS transmitted by the serving cell of the UE and at least one measurement of a PRS transmitted by a neighboring cell of the serving cell; identify from the plurality of PRS measurements the earliest PRS that satisfies a measurement quality threshold and the latest PRS that satisfies the measurement quality threshold; determine a K value for providing a PRS symbol duration sufficient to include the earliest PRS that satisfies the measurement quality threshold and the latest PRS that satisfies the measurement quality threshold; and transmit the K value to the UE.

[0323] Clause 141. A non-transient computer-readable medium as described in Clause 140 further includes, when executed by a network entity, instructions that cause the network entity to perform the following operation: receive from the UE an acknowledgment of a K value to be used by the UE.

[0324] Clause 142. A non-transient computer-readable medium such as any of Clauses 140 to 141, wherein The measurement quality thresholds include thresholds for RSRP, RSRQ, SINR, or combinations thereof.

[0325] Clause 143. A non-transient computer-readable medium such as any of Clauses 140 to 142, wherein Computer-executable instructions that, upon execution, cause the network entity to determine a K value for the duration of the PRS symbol that is sufficient to include the earliest PRS that satisfies the measurement quality threshold and the latest PRS that satisfies the measurement quality threshold include: computer-executable instructions that, upon execution, cause the network entity to determine the timing of the time slot extending from the start of the earliest PRS that satisfies the measurement quality threshold to the end of the latest PRS that satisfies the measurement quality threshold.

[0326] Clause 144. A non-transient computer-readable medium such as any of Clauses 140 to 143, wherein This network entity includes LMF or LMS.

[0327] Clause 145. A non-transitory computer-readable medium such as any of Clauses 140 to 144, wherein This UE includes Type 1 UEs.

[0328] Clause 146. A non-transient computer-readable medium such as any of Clauses 127 to 145 further includes instructions, when performed by a network entity, to further cause the network entity to perform the following actions: determine a change in uncertainty associated with a PRS transmitted by a neighboring cell of the serving cell of the UE; and notify the UE of the change in uncertainty.

[0329] Clause 147. A non-transient computer-readable medium as described in Clause 146, wherein a computer-executable instruction which, when executed, causes the network entity to determine a change in uncertainty associated with a PRS transmitted by a neighboring cell of the serving cell of the UE, comprises: a computer-executable instruction which, when executed, causes the network entity to determine the change in uncertainty based on the certainty of the UE's location.

[0330] Clause 148. A non-transient computer-readable medium as described in Clause 147, wherein the uncertainty associated with the PRS transmitted by neighboring cells decreases as the certainty of the UE's location increases and increases as the certainty of the UE's location decreases.

[0331] Clause 149. A non-transient computer-readable medium such as any of Clauses 146 to 148, wherein Computer-executable instructions that, when executed, cause the network entity to notify the UE of the change in uncertainty include: computer-executable instructions that, when executed, cause the network entity to send the UE an updated value of the nr-DL-PRS-ExpectedRSTD-Uncertainty parameter associated with the PRS transmitted by the neighboring cell.

[0332] Clause 150. A non-transient computer-readable medium such as any of Clauses 146 to 149 further includes instructions, when executed by a network entity, to further cause the network entity to perform the following operation: receive from the UE an indication of a K value to be used by the UE.

[0333] Clause 151. A non-transient computer-readable medium storing computer-executable instructions that, when executed by a UE, cause the UE to: receive from a network entity an indication of a PRS measurement window period value (P) and a minimum PRS symbol duration value (K); and use the P and K to measure at least one PRS.

[0334] Clause 152. The non-transient computer-readable medium of Clause 151 further includes, when executed by the UE, instructions that cause the UE to perform the following actions: send to the network entity an acknowledgment that the UE is using P and K to measure at least one PRS.

[0335] Clause 153. A non-transient computer-readable medium such as any of Clauses 151 to 152, wherein This network entity includes LMF or LMS.

[0336] Clause 154. A non-transient computer-readable medium such as any of Clauses 151 to 153, wherein Computer-executable instructions that cause the UE to receive instructions on P and K during execution include computer-executable instructions that cause the UE to receive instructions on P and K via MAC-CE, DCI, or a combination thereof during execution.

[0337] Clause 155. A non-transient computer-readable medium such as any of Clauses 151 to 154, wherein The UE includes either a Type 1 UE or a Type 2 UE.

[0338] Clause 156. A non-transient computer-readable medium such as any of Clauses 151 to 155 further includes, when executed by the UE, instructions to further cause the UE to perform the following operations: before receiving instructions on the P and K, sending information to the network entity specifying a plurality of PRS measurement window periods supported by the UE.

[0339] Clause 157. A non-transient computer-readable medium as described in Clause 156, wherein computer-executable instructions that, when executed, cause the UE to send information specifying a plurality of PRS measurement window periods supported by the UE, include: computer-executable instructions that, when executed, cause the UE to send an indication of which one or more PRS measurement window periods among the plurality of PRS measurement window periods supported by the UE are preferred by the UE.

[0340] Clause 158. A non-transient computer-readable medium such as any of Clauses 151 to 157 further includes, when executed by the UE, instructions that further cause the UE to perform the following actions: receiving from the network entity instructions for modifying a P value, a K value, or both currently being used by the UE; and modifying the P value, K value, or both according to the instructions.

[0341] Clause 159. A non-transient computer-readable medium as described in Clause 158 further includes, when executed by the UE, instructions that cause the UE to perform the following actions: send to the network entity an acknowledgment that the P value has been modified, the K value has been modified, or both.

[0342] Clause 160. A non-transient computer-readable medium such as any of Clauses 158 to 159, wherein Computer-executable instructions that, when executed, cause the UE to receive instructions for modifying a P value, a K value, or both currently being used by the UE include computer-executable instructions that, when executed, cause the UE to receive the instructions via a MAC-CE, a DCI, or a combination thereof.

[0343] Clause 161. A non-transient computer-readable medium such as any of Clauses 151 to 160 further includes instructions, when executed by the UE, to further cause the UE to perform the following operations: perform a plurality of PRS measurements, the plurality of PRS measurements including a measurement of a reference PRS transmitted by the UE's serving cell and at least one measurement of a PRS transmitted by a neighboring cell of the serving cell; identify from the plurality of PRS measurements the earliest PRS that satisfies a measurement quality threshold and the latest PRS that satisfies the measurement quality threshold; determine a K value that provides a PRS symbol duration sufficient to include the earliest PRS that satisfies the measurement quality threshold and the latest PRS that satisfies the measurement quality threshold; and transmit the K value to a network node.

[0344] Clause 162. A non-transient computer-readable medium as described in Clause 161, wherein, when executed, the computer-executable instructions that cause the UE to determine, upon execution, to provide a K value for the duration of the PRS symbol containing the earliest PRS that satisfies the measurement quality threshold and the latest PRS that satisfies the measurement quality threshold, include: computer-executable instructions that, when executed, cause the UE to determine a time slot timing extending from the start of the earliest PRS that satisfies the measurement quality threshold to the end of the latest PRS that satisfies the measurement quality threshold.

[0345] Clause 163. A non-transient computer-readable medium such as any of Clauses 161 to 162 further includes instructions, when executed by the UE, to further cause the UE to perform the following actions: receive an indication from the network node to use the K value.

[0346] Clause 164. A non-transient computer-readable medium such as any of Clauses 162 to 163 further includes, when executed by the UE, instructions that cause the UE to further perform the following actions: send an acknowledgment to the network node that the K value will be used.

[0347] Clause 165. A non-transient computer-readable medium such as any of Clauses 161 to 164, wherein The measurement quality thresholds include thresholds for RSRP, RSRQ, SINR, or combinations thereof.

[0348] Clause 166. A non-transient computer-readable medium such as any of Clauses 151 to 165 further includes, when executed by the UE, instructions to further cause the UE to perform the following actions: receive from the network entity a notification of a change in uncertainty associated with a PRS transmitted by a neighboring cell of the serving cell of the UE; and modify the K value based on the notification.

[0349] Clause 167. A non-transient computer-readable medium as described in Clause 166 further includes, when executed by the UE, instructions that cause the UE to perform the following actions: send an indication to the network entity that the K value has been modified.

[0350] Clause 168. A non-transient computer-readable medium such as any of Clauses 166 to 167, wherein Computer-executable instructions that cause the UE to receive notification of a change in the uncertainty during execution include: computer-executable instructions that cause the UE to receive an updated value of the nr-DL-PRS-ExpectedRSTD-Uncertainty parameter associated with the PRS transmitted by the neighboring cell during execution.

[0351] Clause 169. An apparatus comprising: a memory, a transceiver, and a processor communicatively coupled to the memory and the transceiver, the memory, the transceiver, and the processor being configured to perform a method according to any one of Clauses 1 to 42.

[0352] Clause 170. An apparatus comprising means for performing a method according to any one of Clauses 1 to 42.

[0353] Clause 171. A non-transient computer-readable medium storing computer-executable instructions, the computer-executable instructions including at least one instruction for causing a computer or processor to perform a method according to any one of Clauses 1 to 42.

[0354] Other aspects include, but are not limited to, the following.

[0355] In one aspect, a wireless communication method performed by a network entity includes: transmitting information to a user equipment (UE) specifying a plurality of positioning reference signal (PRS) measurement window period (P) values; selecting one of the plurality of P values ​​for use by the UE; and instructing the UE to use the selected P value.

[0356] In some aspects, the method includes: receiving from the UE an acknowledgment of a P value to be used by the UE.

[0357] In some respects, this network entity includes a Location Management Function (LMF) or a Location Management Server (LMS).

[0358] In some respects, transmitting information specifying multiple P values ​​includes broadcasting the information to multiple UEs.

[0359] In some respects, selecting one of the plurality of P values ​​includes selecting a P value based on the mobility state of the UE and / or the quality of the signals received by the UE.

[0360] In some respects, the mobility status of the UE includes the UE's location.

[0361] In some respects, selecting one of the multiple P values ​​includes: selecting a larger value for P if the location of the UE is known with a certainty greater than a first threshold, and selecting a smaller value for P if the location of the UE is known with a certainty less than a second threshold.

[0362] In some respects, the mobility status of the UE includes the speed of the UE.

[0363] In some respects, selecting one of the multiple P values ​​includes: selecting a smaller value for P if the UE's speed is greater than a first threshold, and selecting a larger value for P if the UE's speed is less than a second threshold.

[0364] In some respects, the quality of the signal received by the UE includes the reference signal received power (RSRP), the reference signal received quality (RSRQ), and / or the signal-to-interference-plus-noise ratio (SINR).

[0365] In some respects, selecting one of the plurality of P values ​​includes: selecting a larger value for P if the quality of the signal received by the UE is greater than a first threshold, and selecting a smaller value for P if the quality of the signal received by the UE is less than a second threshold.

[0366] In some respects, instructing the UE to use the selected P value includes sending an indication to the UE of the selected P value.

[0367] In some respects, sending an indication of the selected P value includes sending the indication via a Media Access Control (MAC) control element (CE) and / or downlink control information (DCI).

[0368] In some respects, the UE includes either a Type 1 UE or a Type 2 UE.

[0369] In one aspect, a wireless communication method performed by a network entity includes: receiving from a user equipment (UE) information specifying a plurality of positioning reference signal (PRS) measurement window period (P) values ​​supported by the UE; selecting one of the plurality of P values ​​for use by the UE; and instructing the UE to use the selected P value.

[0370] In some aspects, the method includes receiving from the UE an acknowledgment of a P value to be used by the UE.

[0371] In some respects, this network entity includes a Location Management Function (LMF) or a Location Management Server (LMS).

[0372] In some respects, receiving information specifying multiple P values ​​includes receiving an indication of which one or more of those P values ​​are preferred by the UE.

[0373] In some respects, selecting one of the plurality of P values ​​includes selecting a P value based on the mobility state of the UE and / or the quality of the signals received by the UE.

[0374] In some respects, the mobility status of the UE includes the UE's location.

[0375] In some respects, selecting one of the multiple P values ​​includes: selecting a larger value for P if the location of the UE is known with a certainty greater than a first threshold, and selecting a smaller value for P if the location of the UE is known with a certainty less than a second threshold.

[0376] In some respects, the mobility status of the UE includes the speed of the UE.

[0377] In some respects, selecting one of the multiple P values ​​includes: selecting a smaller value for P if the UE's speed is greater than a first threshold, and selecting a larger value for P if the UE's speed is less than a second threshold.

[0378] In some respects, the quality of the signal received by the UE includes the reference signal received power (RSRP), the reference signal received quality (RSRQ), and / or the signal-to-interference-plus-noise ratio (SINR).

[0379] In some respects, selecting one of the plurality of P values ​​includes: selecting a larger value for P if the quality of the signal received by the UE is greater than a first threshold, and selecting a smaller value for P if the quality of the signal received by the UE is less than a second threshold.

[0380] In some respects, instructing the UE to use the selected P value includes sending an indication to the UE of the selected P value.

[0381] In some respects, sending an indication of the selected P value includes sending the indication via a Media Access Control (MAC) control element (CE) and / or downlink control information (DCI).

[0382] In some respects, the UE includes either a Type 1 UE or a Type 2 UE.

[0383] In one aspect, a wireless communication method performed by a network entity includes: determining a modification to a Position Reference Signal (PRS) measurement window period (P) value of a user equipment (UE); and instructing the UE to perform the modification on the P value.

[0384] In some aspects, the method includes receiving from the UE an acknowledgment of a modified P value to be used by the UE.

[0385] In some respects, this network entity includes a Location Management Function (LMF) or a Location Management Server (LMS).

[0386] In some respects, determining the modification to the P value involves determining the modification based on the UE's mobility state and / or the quality of the signals received by the UE.

[0387] In some respects, the mobility status of the UE includes the UE's location.

[0388] In some respects, the modifications to be made include: increasing the P value if the location of the UE is known with a certainty greater than a first threshold, and decreasing the P value if the location of the UE is known with a certainty less than a second threshold.

[0389] In some respects, the mobility status of the UE includes the speed of the UE.

[0390] In some aspects, the modifications to be made include: decreasing the P value if the UE's speed is greater than a first threshold, and increasing the P value if the UE's speed is less than a second threshold.

[0391] In some respects, the quality of the signal received by the UE includes the reference signal received power (RSRP), the reference signal received quality (RSRQ), and / or the signal-to-interference-plus-noise ratio (SINR).

[0392] In some aspects, the modifications to be made include: increasing the P value if the quality of the signal received by the UE is greater than a first threshold, and decreasing the P value if the quality of the signal received by the UE is less than a second threshold.

[0393] In some respects, instructing the UE to use the selected P value includes sending an indication to the UE of the selected P value.

[0394] In some respects, sending an indication of the selected P value includes sending the indication via a Media Access Control (MAC) control element (CE) and / or downlink control information (DCI).

[0395] In some respects, the UE includes either a Type 1 UE or a Type 2 UE.

[0396] In one aspect, a wireless communication method performed by a network entity includes: receiving from a user equipment (UE) a plurality of positioning reference signal (PRS) measurements, the plurality of measurements including measurements of a reference PRS transmitted by a serving cell of the UE and at least one measurement of a PRS transmitted by a neighboring cell of the serving cell; identifying from the plurality of PRS measurements the earliest PRS that satisfies a measurement quality threshold and the latest PRS that satisfies the measurement quality threshold; determining a minimum PRS symbol duration (K) value, the K value including the identified earliest PRS that satisfies the measurement quality threshold and the latest PRS that satisfies the measurement quality threshold; and transmitting the K value to the UE.

[0397] In some aspects, the method includes receiving from the UE an acknowledgment of a K value to be used by the UE.

[0398] In some respects, this network entity includes a Location Management Function (LMF) or a Location Management Server (LMS).

[0399] In some respects, the measurement quality thresholds include thresholds for the reference signal received power (RSRP), reference signal received quality (RSRQ), and / or the signal-to-interference-plus-noise ratio (SINR).

[0400] In some aspects, determining the minimum PRS symbol duration (K) value that includes the earliest and latest PRS that meet the identified measurement quality threshold includes determining the time slot timing from the start of the earliest PRS that meets the threshold to the end of the latest PRS that meets the threshold.

[0401] In some respects, this UE includes Type 1 UE.

[0402] In one aspect, a wireless communication method performed by a network entity includes: transmitting information to a user equipment (UE) specifying a plurality of positioning reference signal (PRS) symbol duration (K) values; selecting one of the plurality of K values ​​for use by the UE; and instructing the UE to use the selected K value.

[0403] In some aspects, the method includes receiving from the UE an acknowledgment of a K value to be used by the UE.

[0404] In some respects, this network entity includes a Location Management Function (LMF) or a Location Management Server (LMS).

[0405] In some respects, transmitting information specifying multiple K values ​​includes broadcasting the information to multiple UEs.

[0406] In some respects, selecting one of the plurality of K values ​​includes selecting a K value based on the quality of the signal received by the UE and / or the necessity of the signal received by the UE.

[0407] In some respects, the quality of the signal received by the UE includes the reference signal received power (RSRP), the reference signal received quality (RSRQ), and / or the signal-to-interference-plus-noise ratio (SINR).

[0408] In some respects, instructing the UE to use the selected K value includes sending an indication to the UE of the selected K value.

[0409] In some respects, sending an indication of the selected K value includes sending the indication via a Media Access Control (MAC) control element (CE) and / or downlink control information (DCI).

[0410] In some respects, this UE includes Type 1 UE.

[0411] In one aspect, a wireless communication method performed by a network entity includes: determining a change in uncertainty associated with a location reference signal (PRS) transmitted by a neighboring cell of the serving cell; and notifying a user equipment (UE) of the change in uncertainty.

[0412] In some aspects, the method includes receiving from the UE an acknowledgment of the PRS symbol duration (K) to be used by the UE.

[0413] In some respects, this network entity includes a Location Management Function (LMF) or a Location Management Server (LMS).

[0414] In some respects, determining changes in uncertainty associated with PRS transmitted by neighboring cells of the serving cell includes determining such changes based on the certainty of the UE's location.

[0415] In some respects, the uncertainty associated with PRS transmitted by neighboring cells decreases as the certainty of the UE's location increases, and increases as the certainty of the UE's location decreases.

[0416] In some respects, notifying the UE of the change in uncertainty includes sending the UE an updated value of the nr-DL-PRS-ExpectedRSTD-Uncertainty parameter associated with the PRS transmitted by the neighboring cell.

[0417] In some respects, this UE includes Type 1 UE.

[0418] In one aspect, a wireless communication method performed by a user equipment (UE) includes: receiving information from a network entity specifying a plurality of positioning reference signal (PRS) measurement window period (P) values; receiving from the network entity an indication of a P value to be used among the plurality of P values; and using the indicated P value for the PRS measurement window period.

[0419] In some respects, the method includes sending an acknowledgment to the network entity of the P value to be used by the UE.

[0420] In some respects, this network entity includes a Location Management Function (LMF) or a Location Management Server (LMS).

[0421] In some respects, receiving an indication of the selected P value includes receiving the indication via a Media Access Control (MAC) control element (CE) and / or Downlink Control Information (DCI).

[0422] In some respects, the UE includes either a Type 1 UE or a Type 2 UE.

[0423] In one aspect, a wireless communication method performed by a user equipment (UE) includes: sending information to a network entity specifying a plurality of positioning reference signal (PRS) measurement window period (P) values ​​supported by the UE; receiving from the network entity an indication of which of the plurality of P values ​​to use; and using the indicated P value as the PRS measurement window period.

[0424] In some respects, the method includes sending an acknowledgment to the network entity of the P value to be used by the UE.

[0425] In some respects, sending information specifying multiple P values ​​includes sending an indication of which one or more of those P values ​​are preferred by the UE.

[0426] In some respects, this network entity includes a Location Management Function (LMF) or a Location Management Server (LMS).

[0427] In some respects, receiving an indication of the selected P value includes receiving the indication via a Media Access Control (MAC) control element (CE) and / or Downlink Control Information (DCI).

[0428] In some respects, the UE includes either a Type 1 UE or a Type 2 UE.

[0429] In one aspect, a wireless communication method performed by a user equipment (UE) includes: receiving from a network entity an instruction for modifying a positioning reference signal (PRS) measurement window period (P) value; and modifying the P value according to the instruction.

[0430] In some respects, the method includes sending an acknowledgment of the modified P value to the network entity.

[0431] In some respects, this network entity includes a Location Management Function (LMF) or a Location Management Server (LMS).

[0432] In some respects, receiving instructions for modifying the P value includes receiving the instructions via a Media Access Control (MAC) control element (CE) and / or downlink control information (DCI).

[0433] In some respects, the UE includes either a Type 1 UE or a Type 2 UE.

[0434] In one aspect, a wireless communication method performed by a user equipment (UE) includes: performing a plurality of positioning reference signal (PRS) measurements, the plurality of measurements including measurements of a reference PRS transmitted by a serving cell of the UE and at least one measurement of a PRS transmitted by a neighboring cell of the serving cell; identifying the earliest PRS and the latest PRS that satisfy a measurement quality threshold from the plurality of PRS measurements; determining a minimum PRS symbol duration (K) value, the K value including the identified earliest PRS and the latest PRS that satisfy the measurement quality threshold; and transmitting the K value to a network node.

[0435] In some aspects, the method includes receiving an indication from the network node that the K value should be used.

[0436] In some respects, the method includes sending an acknowledgment to the network node that the K value will be used.

[0437] In some respects, this network entity includes a Location Management Function (LMF) or a Location Management Server (LMS).

[0438] In some respects, the measurement quality thresholds include thresholds for the reference signal received power (RSRP), reference signal received quality (RSRQ), and / or the signal-to-interference-plus-noise ratio (SINR).

[0439] In some aspects, determining the minimum PRS symbol duration (K) value that includes the earliest and latest PRS that meet the identified measurement quality threshold includes determining the time slot timing from the start of the earliest PRS that meets the threshold to the end of the latest PRS that meets the threshold.

[0440] In some respects, this UE includes Type 1 UE.

[0441] In one aspect, a wireless communication method performed by a user equipment (UE) includes: receiving information from a network entity specifying a plurality of positioning reference signal (PRS) symbol duration (K) values; receiving from the network entity an indication of a K value to be used among the plurality of K values; and using the indicated K value for the PRS symbol duration.

[0442] In some respects, the method includes sending an acknowledgment to the network entity of the K value to be used by the UE.

[0443] In some respects, this network entity includes a Location Management Function (LMF) or a Location Management Server (LMS).

[0444] In some respects, receiving an indication from the network entity of the K value to be used among the plurality of K values ​​includes receiving the indication via a Media Access Control (MAC) control element (CE) and / or downlink control information (DCI).

[0445] In some respects, this UE includes Type 1 UE.

[0446] In one aspect, a wireless communication method performed by a user equipment (UE) includes: receiving from a network entity a notification of a change in uncertainty associated with a location reference signal (PRS) transmitted by a neighboring cell of the serving cell; and modifying the location reference signal (PRS) symbol duration (K) value based on the notification.

[0447] In some respects, the method includes sending an instruction to the network entity regarding the modified K value.

[0448] In some respects, this network entity includes a Location Management Function (LMF) or a Location Management Server (LMS).

[0449] In some respects,

[0450] In some respects, this UE includes Type 1 UE.

[0451] In one aspect, a network entity includes: a memory; at least one network interface; and at least one processor communicatively coupled to the memory and the at least one network interface, the at least one processor being configured to: transmit information to a user equipment (UE) specifying a plurality of positioning reference signal (PRS) measurement window period (P) values; select one of the plurality of P values ​​for use by the UE; and instruct the UE to use the selected P value.

[0452] In one aspect, a network entity includes: a memory; at least one network interface; and at least one processor communicatively coupled to the memory and the at least one network interface, the at least one processor being configured to: receive from a user equipment (UE) information specifying a plurality of positioning reference signal (PRS) measurement window period (P) values ​​supported by the UE; select one of the plurality of P values ​​for use by the UE; and instruct the UE to use the selected P value.

[0453] In one aspect, a network entity includes: a memory; at least one network interface; and at least one processor communicatively coupled to the memory and the at least one network interface, the at least one processor being configured to: determine a modification to a Positioning Reference Signal (PRS) measurement window period (P) value of a user equipment (UE); and instruct the UE to make the modification to the P value.

[0454] In one aspect, a network entity includes: a memory; at least one network interface; and at least one processor communicatively coupled to the memory and the at least one network interface, the at least one processor being configured to: receive from a user equipment (UE) a plurality of positioning reference signal (PRS) measurements, the plurality of measurements including measurements of a reference PRS transmitted by the UE's serving cell and at least one measurement of a PRS transmitted by neighboring cells of the serving cell; identify from the plurality of PRS measurements the earliest PRS that satisfies a measurement quality threshold and the latest PRS that satisfies the measurement quality threshold; determine a minimum PRS symbol duration (K) value, the K value including the identified earliest PRS that satisfies the measurement quality threshold and the latest PRS that satisfies the measurement quality threshold; and transmit the K value to the UE.

[0455] In one aspect, a network entity includes: a memory; at least one network interface; and at least one processor communicatively coupled to the memory and the at least one network interface, the at least one processor being configured to: transmit information specifying a plurality of Position Reference Signal (PRS) symbol duration (K) values ​​to a user equipment (UE); select one of the plurality of K values ​​for use by the UE; and instruct the UE to use the selected K value.

[0456] In one aspect, a network entity includes: a memory; at least one network interface; and at least one processor communicatively coupled to the memory and the at least one network interface, the at least one processor being configured to: determine a change in uncertainty associated with a location reference signal (PRS) transmitted by a neighboring cell of the serving cell; and notify the user equipment (UE) of the change in uncertainty.

[0457] In one aspect, a user equipment (UE) includes: a memory; at least one transceiver; and at least one processor communicatively coupled to the memory and the at least one transceiver, the at least one processor being configured to: receive from a network entity information specifying a plurality of Position Reference Signal (PRS) measurement window period (P) values; receive from the network entity an indication of a P value to be used among the plurality of P values; and use the indicated P value for the PRS measurement window period.

[0458] In one aspect, a user equipment (UE) includes: a memory; at least one transceiver; and at least one processor communicatively coupled to the memory and the at least one transceiver, the at least one processor being configured to: send information to a network entity specifying a plurality of Position Reference Signal (PRS) measurement window period (P) values ​​supported by the UE; receive from the network entity an indication of which of the plurality of P values ​​to use; and use the indicated P value as the PRS measurement window period.

[0459] In one aspect, a user equipment (UE) includes: a memory; at least one transceiver; and at least one processor communicatively coupled to the memory and the at least one transceiver, the at least one processor being configured to: receive from a network entity an instruction for modifying a Position Reference Signal (PRS) measurement window period (P) value; and modify the P value according to the instruction.

[0460] In one aspect, a user equipment (UE) includes: a memory; at least one transceiver; and at least one processor communicatively coupled to the memory and the at least one transceiver, the at least one processor being configured to: perform a plurality of location reference signal (PRS) measurements, the plurality of measurements including measurements of a reference PRS transmitted by a serving cell of the UE and at least one measurement of a PRS transmitted by a neighboring cell of the serving cell; identify, from the plurality of PRS measurements, the earliest PRS that satisfies a measurement quality threshold and the latest PRS that satisfies the measurement quality threshold; determine a minimum PRS symbol duration (K) value, the K value including the identified earliest PRS that satisfies the measurement quality threshold and the latest PRS that satisfies the measurement quality threshold; and transmit the K value to a network node.

[0461] In one aspect, a user equipment (UE) includes: a memory; at least one transceiver; and at least one processor communicatively coupled to the memory and the at least one transceiver, the at least one processor being configured to: receive from a network entity information specifying a plurality of Position Reference Signal (PRS) symbol duration (K) values; receive from the network entity an indication of a K value to be used among the plurality of K values; and use the indicated K value for the PRS symbol duration.

[0462] In one aspect, a user equipment (UE) includes: a memory; at least one transceiver; and at least one processor communicatively coupled to the memory and the at least one transceiver, the at least one processor being configured to: receive from a network entity a notification of a change in uncertainty associated with a location reference signal (PRS) transmitted by a neighboring cell of the serving cell; and modify the location reference signal (PRS) symbol duration (K) value based on the notification.

[0463] In one aspect, a network entity includes: means for transmitting information to a user equipment (UE) specifying a plurality of positioning reference signal (PRS) measurement window period (P) values; means for selecting one of the plurality of P values ​​for use by the UE; and means for instructing the UE to use the selected P value.

[0464] In one aspect, a network entity includes: means for receiving from a user equipment (UE) information specifying a plurality of positioning reference signal (PRS) measurement window period (P) values ​​supported by the UE; means for selecting one of the plurality of P values ​​for use by the UE; and means for instructing the UE to use the selected P value.

[0465] In one aspect, a network entity includes: means for determining a modification to a location reference signal (PRS) measurement window period (P) value of a user equipment (UE); and means for instructing the UE to make the modification to the P value.

[0466] In one aspect, a network entity includes: means for receiving a plurality of Position Reference Signal (PRS) measurements from a user equipment (UE), the plurality of measurements including measurements of a reference PRS transmitted by a serving cell of the UE and at least one measurement of a PRS transmitted by a neighboring cell of the serving cell; means for identifying the earliest PRS and the latest PRS that satisfy a measurement quality threshold from the plurality of PRS measurements; means for determining a minimum PRS symbol duration (K) value, the K value including the identified earliest PRS and the latest PRS that satisfy the measurement quality threshold; and means for transmitting the K value to the UE.

[0467] In one aspect, a network entity includes: means for transmitting information to a user equipment (UE) specifying a plurality of Position Reference Signal (PRS) symbol duration (K) values; means for selecting one of the plurality of K values ​​for use by the UE; and means for instructing the UE to use the selected K value.

[0468] In one aspect, a network entity includes: means for determining a change in uncertainty associated with a location reference signal (PRS) transmitted by a neighboring cell of the serving cell; and means for notifying a user equipment (UE) of the change in uncertainty.

[0469] In one aspect, a user equipment (UE) includes: means for receiving information from a network entity specifying a plurality of positioning reference signal (PRS) measurement window period (P) values; means for receiving from the network entity an indication of a P value to be used among the plurality of P values; and means for using the indicated P value in the PRS measurement window period.

[0470] In one aspect, a user equipment (UE) includes: means for transmitting to a network entity information specifying a plurality of Position Reference Signal (PRS) measurement window period (P) values ​​supported by the UE; means for receiving from the network entity an indication of which of the plurality of P values ​​to use; and means for using the indicated P value as the PRS measurement window period.

[0471] In one aspect, a user equipment (UE) includes: means for receiving from a network entity an instruction for modifying a positioning reference signal (PRS) measurement window period (P) value; and means for modifying the P value according to the instruction.

[0472] In one aspect, a user equipment (UE) includes: means for performing a plurality of positioning reference signal (PRS) measurements, the plurality of measurements including measurements of a reference PRS transmitted by a serving cell of the UE and at least one measurement of a PRS transmitted by a neighboring cell of the serving cell; means for identifying the earliest PRS and the latest PRS that satisfy a measurement quality threshold from the plurality of PRS measurements; means for determining a minimum PRS symbol duration (K) value, the K value including the identified earliest PRS and the latest PRS that satisfy the measurement quality threshold; and means for transmitting the K value to a network node.

[0473] In one aspect, a user equipment (UE) includes: means for receiving information from a network entity specifying a plurality of positioning reference signal (PRS) symbol duration (K) values; means for receiving from the network entity an indication of a K value to be used among the plurality of K values; and means for using the indicated K value for the PRS symbol duration.

[0474] In one aspect, a user equipment (UE) includes: means for receiving from a network entity a notification of a change in uncertainty associated with a location reference signal (PRS) transmitted by a neighboring cell of the serving cell; and means for modifying the symbol duration (K) value of the location reference signal (PRS) based on the notification.

[0475] In one aspect, a non-transient computer-readable medium containing instructions stored thereon, the instructions being used to instruct at least one processor in a network entity to: transmit information to a user equipment (UE) specifying a plurality of positioning reference signal (PRS) measurement window period (P) values; select one of the plurality of P values ​​for use by the UE; and instruct the UE to use the selected P value.

[0476] In one aspect, a non-transient computer-readable medium containing instructions stored thereon for instructing at least one processor in a network entity to: receive from a user equipment (UE) information specifying a plurality of positioning reference signal (PRS) measurement window period (P) values ​​supported by the UE; select one of the plurality of P values ​​for use by the UE; and instruct the UE to use the selected P value.

[0477] In one aspect, a non-transient computer-readable medium containing instructions stored thereon, the instructions being used to cause at least one processor in a network entity to: determine a modification to the location reference signal (PRS) measurement window period (P) value of a user equipment (UE); and instruct the UE to make the modification to the P value.

[0478] In one aspect, a non-transient computer-readable medium containing instructions stored thereon is provided for causing at least one processor in a network entity to: receive from a user equipment (UE) a plurality of positioning reference signal (PRS) measurements, the plurality of measurements including measurements of a reference PRS transmitted by the UE's serving cell and at least one measurement of a PRS transmitted by a neighboring cell of the serving cell; identify from the plurality of PRS measurements the earliest PRS that satisfies a measurement quality threshold and the latest PRS that satisfies the measurement quality threshold; determine a minimum PRS symbol duration (K) value, the K value including the identified earliest PRS that satisfies the measurement quality threshold and the latest PRS that satisfies the measurement quality threshold; and transmit the K value to the UE.

[0479] In one aspect, a non-transient computer-readable medium containing instructions stored thereon for instructing at least one processor in a network entity to: transmit information to a user equipment (UE) specifying a plurality of Position Reference Signal (PRS) symbol duration (K) values; select one of the plurality of K values ​​for use by the UE; and instruct the UE to use the selected K value.

[0480] In one aspect, a non-transient computer-readable medium containing instructions stored thereon, the instructions being used to cause at least one processor in a network entity to: determine a change in uncertainty associated with a location reference signal (PRS) transmitted by a neighboring cell of the serving cell; and notify the user equipment (UE) of the change in uncertainty.

[0481] In one aspect, a non-transient computer-readable medium containing instructions stored thereon, the instructions being used to cause at least one processor in a user equipment (UE) to: receive from a network entity information specifying a plurality of Position Reference Signal (PRS) measurement window period (P) values; receive from the network entity an indication of the P value to be used among the plurality of P values; and use the indicated P value for the PRS measurement window period.

[0482] In one aspect, a non-transient computer-readable medium containing instructions stored thereon for instructing at least one processor in a user equipment (UE) to: send information to a network entity specifying a plurality of Position Reference Signal (PRS) measurement window period (P) values ​​supported by the UE; receive from the network entity an indication of which of the plurality of P values ​​to use; and use the indicated P value as the PRS measurement window period.

[0483] In one aspect, a non-transient computer-readable medium containing instructions stored thereon, the instructions being used to cause at least one processor in a user equipment (UE) to: receive from a network entity instructions for modifying the value of a positioning reference signal (PRS) measurement window period (P); and modify the P value according to the instructions.

[0484] In one aspect, a non-transient computer-readable medium containing instructions stored thereon for instructing at least one processor in a user equipment (UE) to: perform a plurality of positioning reference signal (PRS) measurements, the plurality of measurements including measurements of a reference PRS transmitted by the serving cell of the UE and at least one measurement of a PRS transmitted by a neighboring cell of the serving cell; identify, from the plurality of PRS measurements, the earliest PRS that satisfies a measurement quality threshold and the latest PRS that satisfies the measurement quality threshold; determine a minimum PRS symbol duration (K) value, the K value containing the identified earliest PRS that satisfies the measurement quality threshold and the latest PRS that satisfies the measurement quality threshold; and transmit the K value to a network node.

[0485] In one aspect, a non-transient computer-readable medium containing instructions stored thereon for instructing at least one processor in a user equipment (UE) to: receive from a network entity information specifying a plurality of Position Reference Signal (PRS) symbol duration (K) values; receive from the network entity an indication of a K value to be used among the plurality of K values; and use the indicated K value for the PRS symbol duration.

[0486] In one aspect, a non-transient computer-readable medium containing instructions stored thereon for instructing at least one processor in a user equipment (UE) to: receive from a network entity a notification of a change in uncertainty associated with a location reference signal (PRS) transmitted by a neighboring cell of the serving cell; and, based on the notification, modify the location reference signal (PRS) symbol duration (K) value.

[0487] Other objectives and advantages associated with the aspects disclosed herein will be apparent to those skilled in the art based on the accompanying drawings and detailed description.

Claims

1. A wireless communication method performed by a network entity, the method comprising: Determine the positioning reference signal (PRS) measurement window period value P and the minimum PRS symbol duration value K to be used by the user equipment (UE). The P or its indication, and the K or its indication, are transmitted to the UE for the UE to use in measuring at least one PRS; The modification to P is determined based on the mobility state of the UE, the quality of the signal received by the UE, or both. as well as The instruction to modify P is transmitted to the UE based on the determined modifications to P.

2. The method of claim 1, further comprising: The UE receives confirmation of the P-value, K-value, or both that the UE is using for PRS measurement.

3. The method of claim 1, wherein determining P comprises: P is selected from multiple PRS measurement window periods supported by the UE.

4. The method of claim 1, wherein determining the modification to P based on the mobility state of the UE comprises: The modification is determined based on the UE's location, the UE's speed, or both.

5. The method of claim 1, wherein determining the modification to P based on the quality of the signal received by the UE includes determining the modification based on the following qualities: Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), Signal-to-Interference Plus Noise Ratio (SINR), or a combination thereof.

6. The method of claim 1, wherein transmitting indications of the P and K to be used by the UE comprises: The instruction is transmitted via Media Access Control (MAC) element (CE), Downlink Control Information (DCI), or a combination thereof.

7. The method of claim 1, further comprising: Before transmitting instructions for the P and K to be used by the UE, information specifying multiple PRS measurement window periods supported by the UE is received from the UE; and Determining P includes selecting one of the plurality of PRS measurement window periods supported by the UE.

8. The method of claim 7, wherein receiving information specifying the plurality of PRS measurement window periods supported by the UE further comprises: Receive an indication of one or more PRS measurement window periods preferred by the UE among the plurality of PRS measurement window periods supported by the UE.

9. The method of claim 1, further comprising: The UE receives multiple PRS measurements, including a measurement of a reference PRS transmitted by the serving cell of the UE and at least one measurement of a PRS transmitted by a neighboring cell of the serving cell. Identify the earliest PRS that meets the measurement quality threshold and the latest PRS that meets the measurement quality threshold from the plurality of PRS measurements; Determine a K value that provides sufficient PRS symbol duration to include both the earliest PRS and the latest PRS that satisfy the measurement quality threshold; and The K value is transmitted to the UE.

10. The method of claim 9, wherein determining the K value for providing the PRS symbol duration sufficient to include the earliest PRS satisfying the measurement quality threshold and the latest PRS satisfying the measurement quality threshold comprises: Determine the time slot timing from the start of the earliest PRS that satisfies the measurement quality threshold to the end of the latest PRS that satisfies the measurement quality threshold.

11. The method of claim 1, further comprising: Determine the change in uncertainty associated with the PRS transmitted by neighboring cells of the UE's serving cell; as well as The UE is notified of the change in uncertainty.

12. The method of claim 11, wherein determining the change in uncertainty associated with the PRS transmitted by the neighboring cells of the serving cell of the UE comprises: The change in uncertainty is determined based on the determinism of the UE's positioning.

13. The method of claim 11, wherein notifying the UE of the change in uncertainty comprises: Send the updated value of the nr-DL-PRS-expected RSTD-uncertainty parameter associated with the PRS transmitted by the neighboring cell to the UE.

14. A wireless communication method performed by a user equipment (UE), the method comprising: Receive the positioning reference signal PRS measurement window period value P or its indication, and the minimum PRS symbol duration value K or its indication from the network entity; At least one PRS is measured based at least in part on the P and the K; Receive instructions from the network entity to modify P based on the mobility state of the UE, the quality of the signals received by the UE, or both; as well as At least one PRS is measured based at least in part on the modified P.

15. The method of claim 14, further comprising: Send an acknowledgment to the network entity that the UE is using the P and the K to measure at least one PRS.

16. The method of claim 14, wherein receiving instructions for the P and the K comprises: Instructions for P and K are received via Media Access Control (MAC) element (CE), Downlink Control Information (DCI), or a combination thereof.

17. The method of claim 14, further comprising: Before receiving instructions for P and K, information specifying multiple PRS measurement window periods supported by the UE is sent to the network entity.

18. The method of claim 17, wherein sending information specifying the plurality of PRS measurement window periods supported by the UE further comprises: Send an indication of one or more PRS measurement window periods preferred by the UE among the plurality of PRS measurement window periods supported by the UE.

19. The method of claim 14, further comprising: Send an acknowledgment to the network entity that the value of P has been modified.

20. The method of claim 14, wherein receiving instructions for modifying P comprises: The instructions are received via Media Access Control (MAC) element (CE), Downlink Control Information (DCI), or a combination thereof.

21. The method of claim 14, further comprising: Perform multiple PRS measurements, including a measurement of a reference PRS transmitted by the serving cell of the UE and at least one measurement of a PRS transmitted by neighboring cells of the serving cell. Identify the earliest PRS that meets the measurement quality threshold and the latest PRS that meets the measurement quality threshold from the plurality of PRS measurements; Determine a K value that provides sufficient PRS symbol duration to include both the earliest PRS and the latest PRS that satisfy the measurement quality threshold; and The K value is transmitted to the network node.

22. The method of claim 21, wherein determining the K value for providing the PRS symbol duration sufficient to include the earliest PRS satisfying the measurement quality threshold and the latest PRS satisfying the measurement quality threshold comprises: Determine the time slot timing from the start of the earliest PRS that satisfies the measurement quality threshold to the end of the latest PRS that satisfies the measurement quality threshold.

23. The method of claim 21, further comprising: Receive an instruction from the network node to use the K value.

24. The method of claim 21, wherein the measurement quality threshold includes a threshold for reference signal received power (RSRP), reference signal received quality (RSRQ), signal-to-interference-plus-noise ratio (SINR), or a combination thereof.

25. The method of claim 14, further comprising: Receive notification from the network entity of a change in uncertainty associated with the PRS transmitted by neighboring cells of the UE's serving cell; as well as Modify the K value based on the notification.

26. The method of claim 25, wherein receiving notification of a change in the uncertainty comprises: Receive updated values ​​of the nr-DL-PRS-expected RSTD-uncertainty parameter associated with the PRS transmitted by the neighboring cells.

27. A network entity, comprising: Memory; At least one transceiver; as well as At least one processor communicatively coupled to the memory and the at least one transceiver, the at least one processor being configured to: Determine the positioning reference signal (PRS) measurement window period value P and the minimum PRS symbol duration value K to be used by the user equipment (UE). Instructions for P and K are transmitted to the UE via the at least one transceiver for the UE to use in measuring at least one PRS; The modification to P is determined based on the mobility state of the UE, the quality of the signal received by the UE, or both. as well as The instruction to modify P is transmitted to the UE based on the determined modifications to P.

28. The network entity of claim 27, wherein the at least one processor is further configured to: receive from the UE an acknowledgment of a P value, a K value, or both that the UE is using for PRS measurement.

29. The network entity of claim 27, wherein determining P includes: P is selected from multiple PRS measurement window periods supported by the UE.

30. The network entity of claim 27, wherein determining the modification to P based on the mobility state of the UE comprises: The modification is determined based on the UE's location, the UE's speed, or both.

31. The network entity of claim 27, wherein determining the modification to P based on the quality of the signal received by the UE includes determining the modification based on the following qualities: Reference Signal Received Power (RSRP), Reference Signal Received Quality (RSRQ), Signal-to-Interference-plus-Noise Ratio (SINR), or a combination thereof.

32. The network entity of claim 27, wherein transmitting instructions for the P and K to be used by the UE comprises: The instruction is transmitted via Media Access Control (MAC) element (CE), Downlink Control Information (DCI), or a combination thereof.

33. The network entity of claim 27, wherein the at least one processor is further configured to: Before transmitting instructions for the P and K to be used by the UE, information specifying multiple PRS measurement window periods supported by the UE is received from the UE; and Determining P includes selecting one of the plurality of PRS measurement window periods supported by the UE.

34. The network entity of claim 33, wherein receiving information specifying the plurality of PRS measurement window periods supported by the UE further comprises: Receive an indication of one or more PRS measurement window periods preferred by the UE among the plurality of PRS measurement window periods supported by the UE.

35. The network entity of claim 27, wherein the at least one processor is further configured to: The UE receives multiple PRS measurements, including a measurement of a reference PRS transmitted by the serving cell of the UE and at least one measurement of a PRS transmitted by a neighboring cell of the serving cell. Identify the earliest PRS that meets the measurement quality threshold and the latest PRS that meets the measurement quality threshold from the plurality of PRS measurements; Determine a K value that provides sufficient PRS symbol duration to include both the earliest PRS and the latest PRS that satisfy the measurement quality threshold; and The K value is transmitted to the UE.

36. The network entity of claim 35, wherein determining the K value for providing the PRS symbol duration sufficient to include the earliest PRS satisfying the measurement quality threshold and the latest PRS satisfying the measurement quality threshold comprises: Determine the time slot timing from the start of the earliest PRS that satisfies the measurement quality threshold to the end of the latest PRS that satisfies the measurement quality threshold.

37. The network entity of claim 27, wherein the at least one processor is further configured to: Determine the change in uncertainty associated with the PRS transmitted by neighboring cells of the serving cell of the UE; and The UE is notified of the change in uncertainty.

38. The network entity of claim 37, wherein determining the change in uncertainty associated with the PRS transmitted by the neighboring cells of the serving cell of the UE includes: The change in uncertainty is determined based on the determinism of the UE's positioning.

39. The network entity of claim 37, wherein notifying the UE of the change in uncertainty includes: Send the updated value of the nr-DL-PRS-expected RSTD-uncertainty parameter associated with the PRS transmitted by the neighboring cell to the UE.

40. A user equipment (UE), comprising: Memory; At least one transceiver; as well as At least one processor communicatively coupled to the memory and the at least one transceiver, the at least one processor being configured to: The at least one transceiver receives from the network entity an indication of the positioning reference signal PRS measurement window period value P and the minimum PRS symbol duration value K. Use the P and K to measure at least one PRS; Receive instructions from the network entity to modify P based on the mobility state of the UE, the quality of the signals received by the UE, or both; as well as At least one PRS is measured based at least in part on the modified P.

41. The UE of claim 40, wherein the at least one processor is further configured to: send an acknowledgment to the network entity that the UE is using the P and the K to measure at least one PRS.

42. The UE of claim 40, wherein receiving instructions for the P and the K comprises: Instructions for P and K are received via Media Access Control (MAC) element (CE), Downlink Control Information (DCI), or a combination thereof.

43. The UE of claim 40, wherein the at least one processor is further configured to: Before receiving instructions for P and K, information specifying multiple PRS measurement window periods supported by the UE is sent to the network entity.

44. The UE of claim 43, wherein sending information specifying the plurality of PRS measurement window periods supported by the UE further comprises: Send an indication of one or more PRS measurement window periods preferred by the UE among the plurality of PRS measurement window periods supported by the UE.

45. The UE of claim 43, wherein the at least one processor is further configured to: send an acknowledgment to the network entity that the value of P has been modified.

46. ​​The UE of claim 43, wherein receiving the instruction for modifying the P comprises: The instructions are received via Media Access Control (MAC) element (CE), Downlink Control Information (DCI), or a combination thereof.

47. The UE of claim 40, wherein the at least one processor is further configured to: Perform multiple PRS measurements, including a measurement of a reference PRS transmitted by the serving cell of the UE and at least one measurement of a PRS transmitted by neighboring cells of the serving cell. Identify the earliest PRS that meets the measurement quality threshold and the latest PRS that meets the measurement quality threshold from the plurality of PRS measurements; Determine a K value that provides sufficient PRS symbol duration to include both the earliest PRS and the latest PRS that satisfy the measurement quality threshold; and The K value is transmitted to the network node.

48. The UE of claim 47, wherein determining the K value for providing the PRS symbol duration sufficient to include the earliest PRS satisfying the measurement quality threshold and the latest PRS satisfying the measurement quality threshold comprises: Determine the time slot timing from the start of the earliest PRS that satisfies the measurement quality threshold to the end of the latest PRS that satisfies the measurement quality threshold.

49. The UE of claim 47, wherein the at least one processor is further configured to: receive an indication from the network node to use the K value.

50. The UE of claim 47, wherein the measurement quality threshold includes a threshold for reference signal received power (RSRP), reference signal received quality (RSRQ), signal-to-interference plus noise ratio (SINR), or a combination thereof.

51. The UE of claim 40, wherein the at least one processor is further configured to: Receive from the network entity a notification of a change in uncertainty associated with a PRS transmitted by neighboring cells of the UE's serving cell; and Modify the K value based on the notification.

52. The UE of claim 51, wherein receiving notification of a change in the uncertainty comprises: Receive updated values ​​of the nr-DL-PRS-expected RSTD-uncertainty parameter associated with the PRS transmitted by the neighboring cells.

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