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WO2025184223A1 - Gestion d'équipements d'utilisateur (ue) de couches de fréquence de positionnement abandonnées pour positionner un regroupement de signaux de référence - Google Patents

Gestion d'équipements d'utilisateur (ue) de couches de fréquence de positionnement abandonnées pour positionner un regroupement de signaux de référence

Info

Publication number
WO2025184223A1
WO2025184223A1 PCT/US2025/017411 US2025017411W WO2025184223A1 WO 2025184223 A1 WO2025184223 A1 WO 2025184223A1 US 2025017411 W US2025017411 W US 2025017411W WO 2025184223 A1 WO2025184223 A1 WO 2025184223A1
Authority
WO
WIPO (PCT)
Prior art keywords
prs
pfls
resources
pfl
prs resources
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Pending
Application number
PCT/US2025/017411
Other languages
English (en)
Inventor
Mukesh Kumar
Sony Akkarakaran
Alexandros MANOLAKOS
Pulkit RAJGADIYA
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Qualcomm Inc
Original Assignee
Qualcomm Inc
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Qualcomm Inc filed Critical Qualcomm Inc
Publication of WO2025184223A1 publication Critical patent/WO2025184223A1/fr
Pending legal-status Critical Current
Anticipated expiration legal-status Critical

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0032—Distributed allocation, i.e. involving a plurality of allocating devices, each making partial allocation
    • H04L5/0035—Resource allocation in a cooperative multipoint environment
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0091—Signalling for the administration of the divided path, e.g. signalling of configuration information
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W24/00—Supervisory, monitoring or testing arrangements
    • H04W24/10—Scheduling measurement reports ; Arrangements for measurement reports
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/0001—Arrangements for dividing the transmission path
    • H04L5/0003—Two-dimensional division
    • H04L5/0005—Time-frequency
    • H04L5/0007—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT
    • H04L5/001—Time-frequency the frequencies being orthogonal, e.g. OFDM(A) or DMT the frequencies being arranged in component carriers

Definitions

  • cellular and personal communications service (PCS) systems examples include the cellular analog advanced mobile phone system (AMPS), and digital cellular systems based on code division multiple access (CDMA), frequency division multiple access (FDMA), time division multiple access (TDMA), the Global System for Mobile communications (GSM), etc.
  • AMPS cellular analog advanced mobile phone system
  • CDMA code division multiple access
  • FDMA frequency division multiple access
  • TDMA time division multiple access
  • GSM Global System for Mobile communications
  • a fifth generation (5G) wireless standard referred to as New Radio (NR), enables higher data transfer speeds, greater numbers of connections, and better coverage, among other improvements.
  • NR New Radio
  • the 5G standard is designed to provide higher data rates as compared to previous standards, more accurate positioning (e.g., based on reference signals for positioning (RS-P), such as downlink, uplink, or sidelink positioning reference signals (PRS)), and other technical enhancements.
  • RS-P reference signals for positioning
  • PRS sidelink positioning reference signals
  • 1 QC2308886WO Qualcomm Ref. No.2308886WO 2 SUMMARY [0004] The following presents a simplified summary relating to one or more aspects disclosed herein.
  • a method of wireless communication performed by a user equipment includes receiving a configuration to perform bandwidth aggregation of one or more positioning reference signal (PRS) resources transmitted in two or more positioning frequency layers (PFLs); obtaining one or more individual positioning measurements of each of the one or more PRS resources based on an effective frequency domain gap between the one or more PRS resources being greater than or equal to a threshold; and transmitting a measurement report for the one or more PRS resources.
  • PRS positioning reference signal
  • a user equipment includes one or more memories; one or more transceivers; and one or more processors communicatively coupled to the one or more memories and the one or more transceivers, the one or more processors, either alone or in combination, configured to: receive, via the one or more transceivers, a configuration to perform bandwidth aggregation of one or more positioning reference signal (PRS) resources transmitted in two or more positioning frequency layers (PFLs); obtain one or more individual positioning measurements of each of the one or more PRS resources based on an effective frequency domain gap between the one or more PRS resources being greater than or equal to a threshold; and transmit, via the one or more transceivers, a measurement report for the one or more PRS resources.
  • PRS positioning reference signal
  • a user equipment includes means for receiving a configuration to perform bandwidth aggregation of one or more positioning reference signal (PRS) resources transmitted in two or more positioning frequency layers (PFLs); means for obtaining one or more individual positioning measurements of each of the one or more PRS resources based on an effective frequency domain gap between the one or more PRS QC2308886WO Qualcomm Ref. No.2308886WO 3 resources being greater than or equal to a threshold; and means for transmitting a measurement report for the one or more PRS resources.
  • PRS positioning reference signal
  • PFLs positioning frequency layers
  • a non-transitory computer-readable medium stores computer-executable instructions that, when executed by a user equipment (UE), cause the UE to: receive a configuration to perform bandwidth aggregation of one or more positioning reference signal (PRS) resources transmitted in two or more positioning frequency layers (PFLs); obtain one or more individual positioning measurements of each of the one or more PRS resources based on an effective frequency domain gap between the one or more PRS resources being greater than or equal to a threshold; and transmit a measurement report for the one or more PRS resources.
  • PRS positioning reference signal
  • PFLs positioning frequency layers
  • FIG. 1 illustrates an example wireless communications system, according to aspects of the disclosure.
  • FIGS.2A, 2B, and 2C illustrate example wireless network structures, according to aspects of the disclosure.
  • FIGS. 3A, 3B, and 3C are simplified block diagrams of several sample aspects of components that may be employed in a user equipment (UE), a base station, and a network entity, respectively, and configured to support communications as taught herein.
  • UE user equipment
  • base station a base station
  • network entity respectively, and configured to support communications as taught herein.
  • FIG. 4 illustrates an example Long-Term Evolution (LTE) positioning protocol (LPP) capability transfer procedure, assistance data transfer procedure, and location information transfer procedure between a target device and a location server, according to aspects of the disclosure.
  • LTE Long-Term Evolution
  • LPP positioning protocol
  • FIG. 5 is a diagram illustrating an example sidelink ranging and positioning procedure, according to aspects of the disclosure.
  • FIG. 6 is a diagram illustrating an example frame structure, according to aspects of the disclosure.
  • FIGS. 7A and 7B are diagrams of example sidelink slot structures with and without feedback resources, according to aspects of the disclosure.
  • FIG. 7A and 7B are diagrams of example sidelink slot structures with and without feedback resources, according to aspects of the disclosure.
  • FIG. 8 is a diagram showing how a shared channel (SCH) is established on a sidelink between two or more UEs, according to aspects of the disclosure.
  • FIG.9 illustrates an example frequency domain structure of positioning reference signal (PRS) bandwidth aggregation on two positioning frequency layers (PFLs), according to aspects of the disclosure.
  • PRS positioning reference signal
  • FIG.10 illustrates an example scenario where a receiving UE is configured to aggregate PRS in three PFLs, according to aspects of the disclosure.
  • FIG. 11 illustrates various example graphs showing the effect of different gaps between aggregated PRS resources, according to aspects of the disclosure.
  • FIGS.12A and 12B illustrate various examples of aggregated PFLs that may be dropped, according to aspects of the disclosure.
  • FIG.12A and 12B illustrate various examples of aggregated PFLs that may be dropped, according to aspects of the disclosure.
  • FIG. 13 illustrates an example method of wireless communication, according to aspects of the disclosure.
  • DETAILED DESCRIPTION [0024] Aspects of the disclosure are provided in the following description and related drawings directed to various examples provided for illustration purposes. Alternate aspects may be devised without departing from the scope of the disclosure. Additionally, well-known elements of the disclosure will not be described in detail or will be omitted so as not to obscure the relevant details of the disclosure. [0025] Various aspects relate generally to wireless positioning. Some aspects more specifically relate to aggregation of positioning reference signal (PRS) resources across multiple positioning frequency layers (PFLs).
  • PRS positioning reference signal
  • a user equipment performs positioning measurements of the PRS resources across one or more PFLs depending on the effective frequency domain gap between the PFLs, and sends an indication of the PFL(s) used for the positioning measurements.
  • UE user equipment
  • Particular aspects of the subject matter described in this disclosure can be implemented to realize one or more of the following potential advantages.
  • the described 4 QC2308886WO Qualcomm Ref. No.2308886WO 5 techniques can be used to enable the UE to opportunistically perform PRS resource aggregation, thereby improving measurement and positioning performance.
  • data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the description below may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof, depending in part on the particular application, in part on the desired design, in part on the corresponding technology, etc.
  • ASICs application specific integrated circuits
  • sequence(s) of actions described herein can be considered to be embodied entirely within any form of non- transitory computer-readable storage medium having stored therein a corresponding set of computer instructions that, upon execution, would cause or instruct an associated processor of a device to perform the functionality described herein.
  • the various aspects of the disclosure may be embodied in a number of different forms, all of which have been contemplated to be within the scope of the claimed subject matter.
  • the corresponding form of any such aspects may be described herein as, for example, “logic configured to” perform the described action.
  • a UE may be any wireless communication device (e.g., a mobile phone, router, tablet computer, laptop computer, consumer asset locating device, wearable (e.g., smartwatch, glasses, augmented reality (AR) / virtual reality (VR) headset, QC2308886WO Qualcomm Ref. No.2308886WO 6 etc.), vehicle (e.g., automobile, motorcycle, bicycle, etc.), Internet of Things (IoT) device, etc.) used by a user to communicate over a wireless communications network.
  • wireless communication device e.g., a mobile phone, router, tablet computer, laptop computer, consumer asset locating device, wearable (e.g., smartwatch, glasses, augmented reality (AR) / virtual reality (VR) headset, QC2308886WO Qualcomm Ref. No.2308886WO 6 etc.
  • vehicle e.g., automobile, motorcycle, bicycle, etc.
  • IoT Internet of Things
  • a UE may be mobile or may (e.g., at certain times) be stationary, and may communicate with a radio access network (RAN).
  • RAN radio access network
  • the term “UE” may be referred to interchangeably as an “access terminal” or “AT,” a “client device,” a “wireless device,” a “subscriber device,” a “subscriber terminal,” a “subscriber station,” a “user terminal” or “UT,” a “mobile device,” a “mobile terminal,” a “mobile station,” or variations thereof.
  • AT access terminal
  • client device a “wireless device”
  • subscriber device a “subscriber terminal”
  • a “subscriber station” a “user terminal” or “UT”
  • UEs can communicate with a core network via a RAN, and through the core network the UEs can be connected with external networks such as the Internet and with other UEs.
  • a base station may operate according to one of several RATs in communication with UEs depending on the network in which it is deployed, and may be alternatively referred to as an access point (AP), a network node, a NodeB, an evolved NodeB (eNB), a next generation eNB (ng-eNB), a New Radio (NR) Node B (also referred to as a gNB or gNodeB), etc.
  • AP access point
  • eNB evolved NodeB
  • ng-eNB next generation eNB
  • NR New Radio
  • a base station may be used primarily to support wireless access by UEs, including supporting data, voice, and/or signaling connections for the supported UEs. In some systems a base station may provide purely edge node signaling functions while in other systems it may provide additional control and/or network management functions.
  • a communication link through which UEs can send signals to a base station is called an uplink (UL) channel (e.g., a reverse traffic channel, a reverse control channel, an access channel, etc.).
  • UL uplink
  • a communication link through which the base station can send signals to UEs is called a downlink (DL) or forward link channel (e.g., a paging channel, a control channel, a broadcast channel, a forward traffic channel, etc.).
  • DL downlink
  • forward link channel e.g., a paging channel, a control channel, a broadcast channel, a forward traffic channel, etc.
  • the term traffic channel can refer to either an uplink / reverse or downlink / forward traffic channel.
  • the term “base station” may refer to a single physical transmission-reception point (TRP) or to multiple physical TRPs that may or may not be co-located.
  • the physical TRP may be an antenna of the base station corresponding to a cell (or several cell sectors) of the base station. 6 QC2308886WO Qualcomm Ref.
  • the physical TRPs may be an array of antennas (e.g., as in a multiple-input multiple-output (MIMO) system or where the base station employs beamforming) of the base station.
  • the physical TRPs may be a distributed antenna system (DAS) (a network of spatially separated antennas connected to a common source via a transport medium) or a remote radio head (RRH) (a remote base station connected to a serving base station).
  • DAS distributed antenna system
  • RRH remote radio head
  • the non-co-located physical TRPs may be the serving base station receiving the measurement report from the UE and a neighbor base station whose reference radio frequency (RF) signals the UE is measuring.
  • RF radio frequency
  • a TRP is the point from which a base station transmits and receives wireless signals
  • references to transmission from or reception at a base station are to be understood as referring to a particular TRP of the base station.
  • a base station may not support wireless access by UEs (e.g., may not support data, voice, and/or signaling connections for UEs), but may instead transmit reference signals to UEs to be measured by the UEs, and/or may receive and measure signals transmitted by the UEs.
  • An “RF signal” comprises an electromagnetic wave of a given frequency that transports information through the space between a transmitter and a receiver.
  • a transmitter may transmit a single “RF signal” or multiple “RF signals” to a receiver.
  • the receiver may receive multiple “RF signals” corresponding to each transmitted RF signal due to the propagation characteristics of RF signals through multipath channels.
  • the same transmitted RF signal on different paths between the transmitter and receiver may be referred to as a “multipath” RF signal.
  • FIG.1 illustrates an example wireless communications system 100, according to aspects of the disclosure.
  • the wireless communications system 100 (which may also be referred to as a wireless wide area network (WWAN)) may include various base stations 102 (labeled “BS”) and various UEs 104.
  • the base stations 102 may include macro cell base stations (high power cellular base stations) and/or small cell base stations (low power QC2308886WO Qualcomm Ref. No.2308886WO 8 cellular base stations).
  • the macro cell base stations may include eNBs and/or ng-eNBs where the wireless communications system 100 corresponds to an LTE network, or gNBs where the wireless communications system 100 corresponds to a NR network, or a combination of both, and the small cell base stations may include femtocells, picocells, microcells, etc.
  • the base stations 102 may collectively form a RAN and interface with a core network 170 (e.g., an evolved packet core (EPC) or a 5G core (5GC)) through backhaul links 122, and through the core network 170 to one or more location servers 172 (e.g., a location management function (LMF) or a secure user plane location (SUPL) location platform (SLP)).
  • the location server(s) 172 may be part of core network 170 or may be external to core network 170.
  • a location server 172 may be integrated with a base station 102.
  • a UE 104 may communicate with a location server 172 directly or indirectly.
  • a UE 104 may communicate with a location server 172 via the base station 102 that is currently serving that UE 104.
  • a UE 104 may also communicate with a location server 172 through another path, such as via an application server (not shown), via another network, such as via a wireless local area network (WLAN) access point (AP) (e.g., AP 150 described below), and so on.
  • WLAN wireless local area network
  • AP access point
  • communication between a UE 104 and a location server 172 may be represented as an indirect connection (e.g., through the core network 170, etc.) or a direct connection (e.g., as shown via direct connection 128), with the intervening nodes (if any) omitted from a signaling diagram for clarity.
  • the base stations 102 may perform functions that relate to one or more of transferring user data, radio channel ciphering and deciphering, integrity protection, header compression, mobility control functions (e.g., handover, dual connectivity), inter-cell interference coordination, connection setup and release, load balancing, distribution for non-access stratum (NAS) messages, NAS node selection, synchronization, RAN sharing, multimedia broadcast multicast service (MBMS), subscriber and equipment trace, RAN information management (RIM), paging, positioning, and delivery of warning messages.
  • the base stations 102 may communicate with each other directly or indirectly (e.g., through the EPC / 5GC) over backhaul links 134, which may be wired or wireless.
  • the base stations 102 may wirelessly communicate with the UEs 104. Each of the base stations 102 may provide communication coverage for a respective geographic coverage 8 QC2308886WO Qualcomm Ref. No.2308886WO 9 area 110. In an aspect, one or more cells may be supported by a base station 102 in each geographic coverage area 110.
  • a “cell” is a logical communication entity used for communication with a base station (e.g., over some frequency resource, referred to as a carrier frequency, component carrier, carrier, band, or the like), and may be associated with an identifier (e.g., a physical cell identifier (PCI), an enhanced cell identifier (ECI), a virtual cell identifier (VCI), a cell global identifier (CGI), etc.) for distinguishing cells operating via the same or a different carrier frequency.
  • PCI physical cell identifier
  • ECI enhanced cell identifier
  • VCI virtual cell identifier
  • CGI cell global identifier
  • different cells may be configured according to different protocol types (e.g., machine-type communication (MTC), narrowband IoT (NB-IoT), enhanced mobile broadband (eMBB), or others) that may provide access for different types of UEs.
  • MTC machine-type communication
  • NB-IoT narrowband IoT
  • eMBB enhanced mobile broadband
  • the term “cell” may refer to either or both of the logical communication entity and the base station that supports it, depending on the context.
  • the terms “cell” and “TRP” may be used interchangeably.
  • the term “cell” may also refer to a geographic coverage area of a base station (e.g., a sector), insofar as a carrier frequency can be detected and used for communication within some portion of geographic coverage areas 110.
  • a base station e.g., a sector
  • a carrier frequency can be detected and used for communication within some portion of geographic coverage areas 110.
  • While neighboring macro cell base station 102 geographic coverage areas 110 may partially overlap (e.g., in a handover region), some of the geographic coverage areas 110 may be substantially overlapped by a larger geographic coverage area 110.
  • a small cell base station 102' (labeled “SC” for “small cell”) may have a geographic coverage area 110' that substantially overlaps with the geographic coverage area 110 of one or more macro cell base stations 102.
  • a network that includes both small cell and macro cell base stations may be known as a heterogeneous network.
  • a heterogeneous network may also include home eNBs (HeNBs), which may provide service to a restricted group known as a closed subscriber group (CSG).
  • HeNBs home eNBs
  • CSG closed subscriber group
  • the communication links 120 between the base stations 102 and the UEs 104 may include uplink (also referred to as reverse link) transmissions from a UE 104 to a base station 102 and/or downlink (DL) (also referred to as forward link) transmissions from a base station 102 to a UE 104.
  • the communication links 120 may use MIMO antenna technology, including spatial multiplexing, beamforming, and/or transmit diversity.
  • the communication links 120 may be through one or more carrier frequencies. Allocation of 9 QC2308886WO Qualcomm Ref. No.2308886WO 10 carriers may be asymmetric with respect to downlink and uplink (e.g., more or less carriers may be allocated for downlink than for uplink).
  • the wireless communications system 100 may further include a wireless local area network (WLAN) access point (AP) 150 in communication with WLAN stations (STAs) 152 via communication links 154 in an unlicensed frequency spectrum (e.g., 5 GHz).
  • WLAN STAs 152 and/or the WLAN AP 150 may perform a clear channel assessment (CCA) or listen before talk (LBT) procedure prior to communicating in order to determine whether the channel is available.
  • CCA clear channel assessment
  • LBT listen before talk
  • the small cell base station 102' may operate in a licensed and/or an unlicensed frequency spectrum.
  • the small cell base station 102' When operating in an unlicensed frequency spectrum, the small cell base station 102' may employ LTE or NR technology and use the same 5 GHz unlicensed frequency spectrum as used by the WLAN AP 150.
  • NR in unlicensed spectrum may be referred to as NR-U.
  • LTE in an unlicensed spectrum may be referred to as LTE-U, licensed assisted access (LAA), or MULTEFIRE®.
  • LAA licensed assisted access
  • the wireless communications system 100 may further include a millimeter wave (mmW) base station 180 that may operate in mmW frequencies and/or near mmW frequencies in communication with a UE 182.
  • mmW millimeter wave
  • EHF Extremely high frequency
  • EHF has a range of 30 GHz to 300 GHz and a wavelength between 1 millimeter and 10 millimeters. Radio waves in this band may be referred to as a millimeter wave.
  • Near mmW may extend down to a frequency of 3 GHz with a wavelength of 100 millimeters.
  • the super high frequency (SHF) band extends between 3 GHz and 30 GHz, also referred to as centimeter wave. Communications using the mmW/near mmW radio frequency band have high path loss and a relatively short range.
  • the mmW base station 180 and the UE 182 may utilize beamforming (transmit and/or receive) over a mmW communication link 184 to compensate for the extremely high path loss and short range. Further, it will be appreciated that in alternative configurations, one or more base stations 102 may also transmit using mmW or near mmW and beamforming. Accordingly, it will be appreciated that the foregoing illustrations are merely examples and should not be construed to limit the various aspects disclosed herein. QC2308886WO Qualcomm Ref. No.2308886WO 11 [0044] Transmit beamforming is a technique for focusing an RF signal in a specific direction.
  • a network node e.g., a base station
  • broadcasts an RF signal in all directions (omni-directionally).
  • 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, thereby providing a faster (in terms of data rate) and stronger RF signal for the receiving device(s).
  • a network node can control the phase and relative amplitude of the RF signal at each of the one or more transmitters that are broadcasting the RF signal.
  • a network node may use an array of antennas (referred to as a “phased array” or an “antenna array”) that creates a beam of RF waves that can be “steered” to point in different directions, without actually moving the antennas.
  • the RF current from the transmitter is fed to the individual antennas with the correct phase relationship so that the radio waves from the separate antennas add together to increase the radiation in a desired direction, while cancelling to suppress radiation in undesired directions.
  • Transmit beams may be quasi-co-located, meaning that they appear to the receiver (e.g., a UE) as having the same parameters, regardless of whether or not the transmitting antennas of the network node themselves are physically co-located.
  • a QCL relation of a given type means that certain parameters about a second reference RF signal on a second beam can be derived from information about a source reference RF signal on a source beam.
  • the receiver can use the source reference RF signal to estimate the Doppler shift, Doppler spread, average delay, and delay spread of a second reference RF signal transmitted on the same channel.
  • 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 a second reference RF signal transmitted on the same channel.
  • the receiver can use the source reference RF signal to estimate the Doppler shift and average delay of a second reference RF signal transmitted on the same channel. If the source reference RF signal is QCL Type D, the receiver can use the source reference RF signal to estimate the spatial receive parameter of a second reference RF signal transmitted on the same channel.
  • QC2308886WO Qualcomm Ref. No.2308886WO 12 [0046] In receive beamforming, the receiver uses a receive beam to amplify RF signals detected on a given channel.
  • the receiver can increase the gain setting and/or adjust the phase setting of an array of antennas in a particular direction to amplify (e.g., to increase the gain level of) the RF signals received from that direction.
  • a receiver when a receiver is said to beamform in a certain direction, it means the beam gain in that direction is high relative to the beam gain along other directions, or the beam gain in that direction is the highest compared to the beam gain in that direction of all other receive beams available to the receiver. 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 signals received from that direction.
  • RSRP reference signal received power
  • RSRQ reference signal received quality
  • SINR signal-to- interference-plus-noise ratio
  • Transmit and receive beams may be spatially related.
  • a spatial relation means that parameters for a second beam (e.g., a transmit or receive beam) for a second reference signal can be derived from information about a first beam (e.g., a receive beam or a transmit beam) for a first reference signal.
  • a UE may use a particular receive beam to receive a reference downlink reference signal (e.g., synchronization signal block (SSB)) from a base station.
  • the UE can then form a transmit beam for sending an uplink reference signal (e.g., sounding reference signal (SRS)) to that base station based on the parameters of the receive beam.
  • an uplink reference signal e.g., sounding reference signal (SRS)
  • a “downlink” beam may be either a transmit beam or a receive beam, depending on the entity forming it. For example, if a base station is forming the downlink beam to transmit a reference signal to a UE, the downlink beam is a transmit beam. If the UE is forming the downlink beam, however, it is a receive beam to receive the downlink reference signal.
  • an “uplink” beam may be either a transmit beam or a receive beam, depending on the entity forming it. For example, if a base station is forming the uplink beam, it is an uplink receive beam, and if a UE is forming the uplink beam, it is an uplink transmit beam.
  • FR1 frequency range designations FR1 (410 MHz – 7.125 GHz) and FR2 (24.25 GHz – 52.6 GHz). It should be understood that although a portion of FR1 is greater than 6 GHz, FR1 is often referred to (interchangeably) as a “Sub-6 GHz” band in various documents and articles. A similar nomenclature issue sometimes occurs with regard to QC2308886WO Qualcomm Ref.
  • No.2308886WO 13 FR2 which is often referred to (interchangeably) as a “millimeter wave” band in documents and articles, despite being different from the extremely high frequency (EHF) band (30 GHz – 300 GHz) which is identified by the INTERNATIONAL TELECOMMUNICATION UNION® as a “millimeter wave” band.
  • EHF extremely high frequency
  • FR1 and FR2 are often referred to as mid-band frequencies.
  • Recent 5G NR studies have identified an operating band for these mid-band frequencies as frequency range designation FR3 (7.125 GHz – 24.25 GHz).
  • Frequency bands falling within FR3 may inherit FR1 characteristics and/or FR2 characteristics, and thus may effectively extend features of FR1 and/or FR2 into mid-band frequencies.
  • higher frequency bands are currently being explored to extend 5G NR operation beyond 52.6 GHz.
  • three higher operating bands have been identified as frequency range designations FR4a or FR4-1 (52.6 GHz – 71 GHz), FR4 (52.6 GHz – 114.25 GHz), and FR5 (114.25 GHz – 300 GHz). Each of these higher frequency bands falls within the EHF band.
  • sub-6 GHz or the like if used herein may broadly represent frequencies that may be less than 6 GHz, may be within FR1, or may include mid-band frequencies.
  • millimeter wave or the like if used herein may broadly represent frequencies that may include mid-band frequencies, may be within FR2, FR4, FR4-a or FR4-1, and/or FR5, or may be within the EHF band.
  • the anchor carrier is the carrier operating on the primary frequency (e.g., FR1) utilized by a UE 104/182 and the cell in which the UE 104/182 either performs the initial radio resource control (RRC) connection establishment procedure or initiates the RRC connection re-establishment procedure.
  • RRC radio resource control
  • the primary carrier carries all common and UE-specific control channels, and may be a carrier in a licensed frequency (however, this is not always the case).
  • a secondary carrier is a carrier operating on a second frequency (e.g., FR2) that may be configured once the RRC connection is established between the UE 104 and the anchor carrier and that may be used QC2308886WO Qualcomm Ref. No.2308886WO 14 to provide additional radio resources.
  • the secondary carrier may be a carrier in an unlicensed frequency.
  • the secondary carrier may contain only necessary signaling information and signals, for example, those that are UE-specific may not be present in the secondary carrier, since both primary uplink and downlink carriers are typically UE-specific.
  • UEs 104/182 in a cell may have different downlink primary carriers.
  • the same is true for the uplink primary carriers.
  • the network is able to change the primary carrier of any UE 104/182 at any time. This is done, for example, to balance the load on different carriers.
  • a “serving cell” (whether a PCell or an SCell) corresponds to a carrier frequency / component carrier over which some base station is communicating, the term “cell,” “serving cell,” “component carrier,” “carrier frequency,” and the like can be used interchangeably. [0053] For example, still referring to FIG.
  • one of the frequencies utilized by the macro cell base stations 102 may be an anchor carrier (or “PCell”) and other frequencies utilized by the macro cell base stations 102 and/or the mmW base station 180 may be secondary carriers (“SCells”).
  • PCell anchor carrier
  • SCells secondary carriers
  • the simultaneous transmission and/or reception of multiple carriers enables the UE 104/182 to significantly increase its data transmission and/or reception rates. For example, two 20 MHz aggregated carriers in a multi-carrier system would theoretically lead to a two-fold increase in data rate (i.e., 40 MHz), compared to that attained by a single 20 MHz carrier.
  • the wireless communications system 100 may further include a UE 164 that may communicate with a macro cell base station 102 over a communication link 120 and/or the mmW base station 180 over a mmW communication link 184.
  • the macro cell base station 102 may support a 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.
  • the UE 164 and the UE 182 may be capable of sidelink communication.
  • Sidelink-capable UEs (SL-UEs) may communicate with base stations 102 over communication links 120 using the Uu interface (i.e., the air interface between a UE and a base station).
  • SL-UEs may also communicate directly with each other over a wireless sidelink 160 using the PC5 interface (i.e., the air interface between sidelink-capable UEs).
  • a wireless sidelink (or just “sidelink”) is an adaptation of the core cellular (e.g., LTE, NR) standard that allows direct communication between two or more UEs without the communication needing to go through a base station.
  • No.2308886WO 15 communication may be unicast or multicast, and may be used for device-to-device (D2D) media-sharing, vehicle-to-vehicle (V2V) communication, vehicle-to-everything (V2X) communication (e.g., cellular V2X (cV2X) communication, enhanced V2X (eV2X) communication, etc.), emergency rescue applications, etc.
  • V2V vehicle-to-vehicle
  • V2X vehicle-to-everything
  • cV2X cellular V2X
  • eV2X enhanced V2X
  • One or more of a group of SL- UEs utilizing sidelink communications may be within the geographic coverage area 110 of a base station 102.
  • Other SL-UEs in such a group may be outside the geographic coverage area 110 of a base station 102 or be otherwise unable to receive transmissions from a base station 102.
  • groups of SL-UEs communicating via sidelink communications may utilize a one-to-many (1:M) system in which each SL-UE transmits to every other SL-UE in the group.
  • a base station 102 facilitates the scheduling of resources for sidelink communications.
  • sidelink communications are carried out between SL-UEs without the involvement of a base station 102.
  • the sidelink 160 may operate over a wireless communication medium of interest, which may be shared with other wireless communications between other vehicles and/or infrastructure access points, as well as other RATs.
  • a “medium” may be composed of one or more time, frequency, and/or space communication resources (e.g., encompassing one or more channels across one or more carriers) associated with wireless communication between one or more transmitter / receiver pairs.
  • the medium of interest may correspond to at least a portion of an unlicensed frequency band shared among various RATs.
  • any of the illustrated UEs may be SL-UEs.
  • UE 182 was QC2308886WO Qualcomm Ref. No.2308886WO 16 described as being capable of beamforming
  • any of the illustrated UEs, including UE 164 may be capable of beamforming.
  • SL-UEs are capable of beamforming, they may beamform towards each other (i.e., towards other SL-UEs), towards other UEs (e.g., UEs 104), towards base stations (e.g., base stations 102, 180, small cell 102’, access point 150), etc.
  • UEs 164 and 182 may utilize beamforming over sidelink 160.
  • any of the illustrated UEs may receive signals 124 from one or more Earth orbiting space vehicles (SVs) 112 (e.g., satellites).
  • SVs Earth orbiting space vehicles
  • the SVs 112 may be part of a satellite positioning system that a UE 104 can use as an independent source of location information.
  • a satellite positioning system typically includes a system of transmitters (e.g., SVs 112) positioned to enable receivers (e.g., UEs 104) to determine their location on or above the Earth based, at least in part, on positioning signals (e.g., signals 124) received from the transmitters.
  • a transmitter typically transmits a signal marked with a repeating pseudo-random noise (PN) code of a set number of chips.
  • PN pseudo-random noise
  • transmitters While typically located in SVs 112, transmitters may sometimes be located on ground-based control stations, base stations 102, and/or other UEs 104.
  • a UE 104 may include one or more dedicated receivers specifically designed to receive signals 124 for deriving geo location information from the SVs 112.
  • an SBAS may include an augmentation system(s) that provides integrity information, differential corrections, etc., such as the Wide Area Augmentation System (WAAS), the European Geostationary Navigation Overlay Service (EGNOS), the Multi- functional Satellite Augmentation System (MSAS), the Global Positioning System (GPS) Aided Geo Augmented Navigation or GPS and Geo Augmented Navigation system (GAGAN), and/or the like.
  • WAAS Wide Area Augmentation System
  • GNOS European Geostationary Navigation Overlay Service
  • MSAS Multi- functional Satellite Augmentation System
  • GPS Global Positioning System Aided Geo Augmented Navigation or GPS and Geo Augmented Navigation system
  • GAGAN Geo Augmented Navigation system
  • a satellite positioning system may include any combination of one or more global and/or regional navigation satellites associated with such one or more satellite positioning systems.
  • SVs 112 may additionally or alternatively be part of one or more non- terrestrial networks (NTNs).
  • NTN non- terrestrial networks
  • an SV 112 is connected to an earth station (also referred to as a ground station, NTN gateway, or gateway), which in turn is connected to QC2308886WO Qualcomm Ref. No.2308886WO 17 an element in a 5G network, such as a modified base station 102 (without a terrestrial antenna) or a network node in a 5GC.
  • the wireless communications system 100 may further include one or more UEs, such as UE 190, that connects indirectly to one or more communication networks via one or more device-to-device (D2D) peer-to-peer (P2P) links (referred to as “sidelinks”).
  • D2D device-to-device
  • P2P peer-to-peer
  • UE 190 has a D2D P2P link 192 with one of the UEs 104 connected to one of the base stations 102 (e.g., through which UE 190 may indirectly obtain cellular connectivity) and a D2D P2P link 194 with WLAN STA 152 connected to the WLAN AP 150 (through which UE 190 may indirectly obtain WLAN-based Internet connectivity).
  • the D2D P2P links 192 and 194 may be supported with any well-known D2D RAT, such as LTE Direct (LTE-D), WI-FI DIRECT®, BLUETOOTH®, and so on.
  • FIG.2A illustrates an example wireless network structure 200.
  • a 5GC 210 (also referred to as a Next Generation Core (NGC)) can be viewed functionally as control plane (C-plane) functions 214 (e.g., UE registration, authentication, network access, gateway selection, etc.) and user plane (U-plane) functions 212, (e.g., UE gateway function, access to data networks, IP routing, etc.) which operate cooperatively to form the core network.
  • C-plane control plane
  • U-plane user plane
  • User plane interface (NG-U) 213 and control plane interface (NG-C) 215 connect the gNB 222 to the 5GC 210 and specifically to the user plane functions 212 and control plane functions 214, respectively.
  • an ng-eNB 224 may also be connected to the 5GC 210 via NG-C 215 to the control plane functions 214 and NG-U 213 to user plane functions 212. Further, ng-eNB 224 may directly communicate with gNB 222 via a backhaul connection 223.
  • a Next Generation RAN (NG-RAN) 220 may have one or more gNBs 222, while other configurations include one or more of both ng-eNBs 224 and gNBs 222. Either (or both) gNB 222 or ng-eNB 224 may communicate with one or more UEs 204 (e.g., any of the UEs described herein). QC2308886WO Qualcomm Ref.
  • No.2308886WO 18 Another optional aspect may include a location server 230, which may be in communication with the 5GC 210 to provide location assistance for UE(s) 204.
  • the location server 230 can be implemented as a plurality of separate servers (e.g., physically separate servers, different software modules on a single server, different software modules spread across multiple physical servers, etc.), or alternately may each correspond to a single server.
  • the location server 230 can be configured to support one or more location services for UEs 204 that can connect to the location server 230 via the core network, 5GC 210, and/or via the Internet (not illustrated).
  • FIG. 2B illustrates another example wireless network structure 240.
  • a 5GC 260 (which may correspond to 5GC 210 in FIG. 2A) can be viewed functionally as control plane functions, provided by an access and mobility management function (AMF) 264, and user plane functions, provided by a user plane function (UPF) 262, which operate cooperatively to form the core network (i.e., 5GC 260).
  • AMF access and mobility management function
  • UPF user plane function
  • the functions of the AMF 264 include registration management, connection management, reachability management, mobility management, lawful interception, transport for session management (SM) messages between one or more UEs 204 (e.g., any of the UEs described herein) and a session management function (SMF) 266, transparent proxy services for routing SM messages, access authentication and access authorization, transport for short message service (SMS) messages between the UE 204 and the short message service function (SMSF) (not shown), and security anchor functionality (SEAF).
  • the AMF 264 also interacts with an authentication server function (AUSF) (not shown) and the UE 204, and receives the intermediate key that was established as a result of the UE 204 authentication process.
  • AUSF authentication server function
  • the AMF 264 retrieves the security material from the AUSF.
  • the functions of the AMF 264 also include security context management (SCM).
  • SCM receives a key from the SEAF that it uses to derive access-network specific keys.
  • the functionality of the AMF 264 also includes location services management for regulatory services, transport for location services messages between the UE 204 and a location management function (LMF) 270 (which acts as a QC2308886WO Qualcomm Ref.
  • LMF location management function
  • No.2308886WO 19 location server 230 transport for location services messages between the NG-RAN 220 and the LMF 270, evolved packet system (EPS) bearer identifier allocation for interworking with the EPS, and UE 204 mobility event notification.
  • EPS evolved packet system
  • the AMF 264 also supports functionalities for non-3GPP® (Third Generation Partnership Project) access networks.
  • Functions of the UPF 262 include acting as an anchor point for intra/inter-RAT mobility (when applicable), acting as an external protocol data unit (PDU) session point of interconnect 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 the 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 of one or more “end markers” to the source RAN node.
  • QoS quality of service
  • the UPF 262 may also support transfer of location services messages over a user plane between the UE 204 and a location server, such as an SLP 272.
  • the functions of the SMF 266 include session management, UE Internet protocol (IP) address allocation and management, selection and control of user plane functions, configuration of traffic steering at the UPF 262 to route traffic to the proper destination, control of part of policy enforcement and QoS, and downlink data notification.
  • IP Internet protocol
  • the interface over which the SMF 266 communicates with the AMF 264 is referred to as the N11 interface.
  • Another optional aspect may include an LMF 270, which may be in communication with the 5GC 260 to provide location assistance for UEs 204.
  • the LMF 270 can be implemented as a plurality of separate servers (e.g., physically separate servers, different software modules on a single server, different software modules spread across multiple physical servers, etc.), or alternately may each correspond to a single server.
  • the LMF 270 can be configured to support one or more location services for UEs 204 that can connect to the LMF 270 via the core network, 5GC 260, and/or via the Internet (not illustrated).
  • the SLP 272 may support similar functions to the LMF 270, but whereas the LMF 270 may communicate with the AMF 264, NG-RAN 220, and UEs 204 over a QC2308886WO Qualcomm Ref.
  • No.2308886WO 20 control plane (e.g., using interfaces and protocols intended to convey signaling messages and not voice or data)
  • the SLP 272 may communicate with UEs 204 and external clients (e.g., third-party server 274) over a user plane (e.g., using protocols intended to carry voice and/or data like the transmission control protocol (TCP) and/or IP).
  • TCP transmission control protocol
  • IP IP
  • Yet another optional aspect may include a third-party server 274, which may be in communication with the LMF 270, the SLP 272, the 5GC 260 (e.g., via the AMF 264 and/or the UPF 262), the NG-RAN 220, and/or the UE 204 to obtain location information (e.g., a location estimate) for the UE 204.
  • the third-party server 274 may be referred to as a location services (LCS) client or an external client.
  • LCS location services
  • the third- party server 274 can be implemented as a plurality of separate servers (e.g., physically separate servers, different software modules on a single server, different software modules spread across multiple physical servers, etc.), or alternately may each correspond to a single server.
  • User plane interface 263 and control plane interface 265 connect the 5GC 260, and specifically the UPF 262 and AMF 264, respectively, to one or more gNBs 222 and/or ng-eNBs 224 in the NG-RAN 220.
  • the interface between gNB(s) 222 and/or ng-eNB(s) 224 and the AMF 264 is referred to as the “N2” interface
  • the interface between gNB(s) 222 and/or ng-eNB(s) 224 and the UPF 262 is referred to as the “N3” interface
  • the gNB(s) 222 and/or ng-eNB(s) 224 of the NG-RAN 220 may communicate directly with each other via backhaul connections 223, referred to as the “Xn-C” interface.
  • One or more of gNBs 222 and/or ng-eNBs 224 may communicate with one or more UEs 204 over a wireless interface, referred to as the “Uu” interface.
  • a gNB 222 may be divided between a gNB central unit (gNB-CU) 226, one or more gNB distributed units (gNB-DUs) 228, and one or more gNB radio units (gNB-RUs) 229.
  • gNB-CU 226 is a logical node that includes the base station functions of transferring user data, mobility control, radio access network sharing, positioning, session management, and the like, except for those functions allocated exclusively to the gNB-DU(s) 228. More specifically, the gNB-CU 226 generally host the radio resource control (RRC), service data adaptation protocol (SDAP), and packet data convergence protocol (PDCP) protocols of the gNB 222.
  • RRC radio resource control
  • SDAP service data adaptation protocol
  • PDCP packet data convergence protocol
  • a gNB-DU 228 is a logical node that generally hosts the radio link control (RLC) and medium access control (MAC) layer of the gNB 222. Its operation is controlled by the gNB-CU 226.
  • One gNB-DU 228 can QC2308886WO Qualcomm Ref. No.2308886WO 21 support one or more cells, and one cell is supported by only one gNB-DU 228.
  • the interface 232 between the gNB-CU 226 and the one or more gNB-DUs 228 is referred to as the “F1” interface.
  • the physical (PHY) layer functionality of a gNB 222 is generally hosted by one or more standalone gNB-RUs 229 that perform functions such as power amplification and signal transmission/reception.
  • a UE 204 communicates with the gNB-CU 226 via the RRC, SDAP, and PDCP layers, with a gNB-DU 228 via the RLC and MAC layers, and with a gNB-RU 229 via the PHY layer.
  • Deployment of communication systems such as 5G NR systems, may be arranged in multiple manners with various components or constituent parts.
  • a network node In a 5G NR system, or network, a network node, a network entity, a mobility element of a network, a RAN node, a core network node, a network element, or a network equipment, such as a base station, or one or more units (or one or more components) performing base station functionality, may be implemented in an aggregated or disaggregated architecture.
  • a base station such as a Node B (NB), evolved NB (eNB), NR base station, 5G NB, AP, TRP, cell, etc.
  • NB Node B
  • eNB evolved NB
  • An aggregated base station may be configured to utilize a radio protocol stack that is physically or logically integrated within a single RAN node.
  • a disaggregated base station may be configured to utilize a protocol stack that is physically or logically distributed among two or more units (such as one or more central or centralized units (CUs), one or more distributed units (DUs), or one or more radio units (RUs)).
  • CUs central or centralized units
  • DUs distributed units
  • RUs radio units
  • a CU may be implemented within a RAN node, and one or more DUs may be co-located with the CU, or alternatively, may be geographically or virtually distributed throughout one or multiple other RAN nodes.
  • the DUs may be implemented to communicate with one or more RUs.
  • Each of the CU, DU and RU also can be implemented as virtual units, i.e., a virtual central unit (VCU), a virtual distributed unit (VDU), or a virtual radio unit (VRU).
  • VCU virtual central unit
  • VDU virtual distributed unit
  • VRU virtual radio unit
  • Base station-type operation or network design may consider aggregation characteristics of base station functionality.
  • disaggregated base stations may be utilized in an integrated access backhaul (IAB) network, an open radio access network (O-RAN (such as the network configuration sponsored by the O-RAN ALLIANCE®)), or a virtualized radio access network (vRAN, also known as a cloud radio access network (C- QC2308886WO Qualcomm Ref. No.2308886WO 22 RAN)).
  • IAB integrated access backhaul
  • O-RAN open radio access network
  • vRAN virtualized radio access network
  • Disaggregation may include distributing functionality across two or more units at various physical locations, as well as distributing functionality for at least one unit virtually, which can enable flexibility in network design.
  • the various units of the disaggregated base station, or disaggregated RAN architecture can be configured for wired or wireless communication with at least one other unit.
  • FIG. 2C illustrates an example disaggregated base station architecture 250, according to aspects of the disclosure.
  • the disaggregated base station architecture 250 may include one or more central units (CUs) 280 (e.g., gNB-CU 226) that can communicate directly with a core network 267 (e.g., 5GC 210, 5GC 260) via a backhaul link, or indirectly with the core network 267 through one or more disaggregated base station units (such as a Near-Real Time (Near-RT) RAN Intelligent Controller (RIC) 259 via an E2 link, or a Non-Real Time (Non-RT) RIC 257 associated with a Service Management and Orchestration (SMO) Framework 255, or both).
  • CUs central units
  • a CU 280 may communicate with one or more DUs 285 (e.g., gNB-DUs 228) via respective midhaul links, such as an F1 interface.
  • the DUs 285 may communicate with one or more radio units (RUs) 287 (e.g., gNB-RUs 229) via respective fronthaul links.
  • the RUs 287 may communicate with respective UEs 204 via one or more radio frequency (RF) access links.
  • RF radio frequency
  • the UE 204 may be simultaneously served by multiple RUs 287.
  • Each of the units may include one or more interfaces or be coupled to one or more interfaces configured to receive or transmit signals, data, or information (collectively, signals) via a wired or wireless transmission medium.
  • Each of the units, or an associated processor or controller providing instructions to the communication interfaces of the units can be configured to communicate with one or more of the other units via the transmission medium.
  • the units can include a wired interface configured to receive or transmit signals over a wired transmission medium to one or more of the other units.
  • the units can include a wireless interface, which may include a receiver, a transmitter or transceiver (such as a RF transceiver), configured to receive or transmit signals, or both, over a wireless transmission medium to one or more of the other units.
  • the CU 280 may host one or more higher layer control functions.
  • control functions can include RRC, PDCP, service data adaptation protocol (SDAP), or QC2308886WO Qualcomm Ref. No.2308886WO 23 the like.
  • Each control function can be implemented with an interface configured to communicate signals with other control functions hosted by the CU 280.
  • the CU 280 may be configured to handle user plane functionality (i.e., Central Unit – User Plane (CU- UP)), control plane functionality (i.e., Central Unit – Control Plane (CU-CP)), or a combination thereof.
  • the CU 280 can be logically split into one or more CU-UP units and one or more CU-CP units.
  • the CU-UP unit can communicate bidirectionally with the CU-CP unit via an interface, such as the E1 interface when implemented in an O-RAN configuration.
  • the CU 280 can be implemented to communicate with the DU 285, as necessary, for network control and signaling.
  • the DU 285 may correspond to a logical unit that includes one or more base station functions to control the operation of one or more RUs 287.
  • the DU 285 may host one or more of a RLC layer, a MAC layer, and one or more high PHY layers (such as modules for forward error correction (FEC) encoding and decoding, scrambling, modulation and demodulation, or the like) depending, at least in part, on a functional split, such as those defined by the 3rd Generation Partnership Project (3GPP®).
  • the DU 285 may further host one or more low PHY layers.
  • Each layer can be implemented with an interface configured to communicate signals with other layers (and modules) hosted by the DU 285, or with the control functions hosted by the CU 280.
  • Lower-layer functionality can be implemented by one or more RUs 287.
  • an RU 287, controlled by a DU 285, may correspond to a logical node that hosts RF processing functions, or low-PHY layer functions (such as performing fast Fourier transform (FFT), inverse FFT (iFFT), digital beamforming, physical random access channel (PRACH) extraction and filtering, or the like), or both, based at least in part on the functional split, such as a lower layer functional split.
  • FFT fast Fourier transform
  • iFFT inverse FFT
  • PRACH physical random access channel
  • the RU(s) 287 can be implemented to handle over the air (OTA) communication with one or more UEs 204.
  • OTA over the air
  • real-time and non-real-time aspects of control and user plane communication with the RU(s) 287 can be controlled by the corresponding DU 285.
  • this configuration can enable the DU(s) 285 and the CU 280 to be implemented in a cloud-based RAN architecture, such as a vRAN architecture.
  • QC2308886WO Qualcomm Ref. No.2308886WO 24 [0079]
  • the SMO Framework 255 may be configured to support RAN deployment and provisioning of non-virtualized and virtualized network elements.
  • the SMO Framework 255 may be configured to support the deployment of dedicated physical resources for RAN coverage requirements which may be managed via an operations and maintenance interface (such as an O1 interface).
  • the SMO Framework 255 may be configured to interact with a cloud computing platform (such as an open cloud (O-Cloud) 269) to perform network element life cycle management (such as to instantiate virtualized network elements) via a cloud computing platform interface (such as an O2 interface).
  • a cloud computing platform such as an open cloud (O-Cloud) 269
  • network element life cycle management such as to instantiate virtualized network elements
  • cloud computing platform interface such as an O2 interface
  • Such virtualized network elements can include, but are not limited to, CUs 280, DUs 285, RUs 287 and Near-RT RICs 259.
  • the SMO Framework 255 can communicate with a hardware aspect of a 4G RAN, such as an open eNB (O-eNB) 261, via an O1 interface. Additionally, in some implementations, the SMO Framework 255 can communicate directly with one or more RUs 287 via an O1 interface.
  • the SMO Framework 255 also may include a Non-RT RIC 257 configured to support functionality of the SMO Framework 255. [0080]
  • the Non-RT RIC 257 may be configured to include a logical function that enables non- real-time control and optimization of RAN elements and resources, artificial intelligence/machine learning (AI/ML) workflows including model training and updates, or policy-based guidance of applications/features in the Near-RT RIC 259.
  • AI/ML artificial intelligence/machine learning
  • the Non-RT RIC 257 may be coupled to or communicate with (such as via an A1 interface) the Near- RT RIC 259.
  • the Near-RT RIC 259 may be configured to include a logical function that enables near-real-time control and optimization of RAN elements and resources via data collection and actions over an interface (such as via an E2 interface) connecting one or more CUs 280, one or more DUs 285, or both, as well as an O-eNB, with the Near-RT RIC 259.
  • the Non-RT RIC 257 may receive parameters or external enrichment information from external servers.
  • Such information may be utilized by the Near-RT RIC 259 and may be received at the SMO Framework 255 or the Non-RT RIC 257 from non-network data sources or from network functions.
  • the Non-RT RIC 257 or the Near-RT RIC 259 may be configured to tune RAN behavior or performance.
  • the Non-RT RIC 257 may monitor long-term trends and patterns for performance and employ AI/ML models to perform corrective actions through the SMO Framework 255 (such as reconfiguration via O1) or via creation of RAN management policies (such as A1 policies).
  • 3A, 3B, and 3C illustrate several example components (represented by corresponding blocks) that may be incorporated into a UE 302 (which may correspond to any of the UEs described herein), a base station 304 (which may correspond to any of the base stations described herein), and a network entity 306 (which may correspond to or embody any of the network functions described herein, including the location server 230 and the LMF 270, or alternatively may be independent from the NG-RAN 220 and/or 5GC 210/260 infrastructure depicted in FIGS. 2A and 2B, such as a private network) to support the operations described herein.
  • a UE 302 which may correspond to any of the UEs described herein
  • a base station 304 which may correspond to any of the base stations described herein
  • a network entity 306 which may correspond to or embody any of the network functions described herein, including the location server 230 and the LMF 270, or alternatively may be independent from the NG-RAN 220 and/or 5GC
  • these components may be implemented in different types of apparatuses in different implementations (e.g., in an ASIC, in a system-on-chip (SoC), etc.).
  • the illustrated components may also be incorporated into other apparatuses in a communication system.
  • other apparatuses in a system may include components similar to those described to provide similar functionality.
  • a given apparatus may contain one or more of the components.
  • an apparatus may include multiple transceiver components that enable the apparatus to operate on multiple carriers and/or communicate via different technologies.
  • the UE 302 and the base station 304 each include one or more wireless wide area network (WWAN) transceivers 310 and 350, respectively, providing means for communicating (e.g., means for transmitting, means for receiving, means for measuring, means for tuning, means for refraining from transmitting, etc.) via one or more wireless communication networks (not shown), such as an NR network, an LTE network, a GSM network, and/or the like.
  • WWAN wireless wide area network
  • the WWAN transceivers 310 and 350 may each be connected to one or more antennas 316 and 356, respectively, for communicating with other network nodes, such as other UEs, access points, base stations (e.g., eNBs, gNBs), etc., via at least one designated RAT (e.g., NR, LTE, GSM, etc.) over a wireless communication medium of interest (e.g., some set of time/frequency resources in a particular frequency spectrum).
  • a wireless communication medium of interest e.g., some set of time/frequency resources in a particular frequency spectrum.
  • the WWAN transceivers 310 and 350 may be variously configured for transmitting and encoding signals 318 and 358 (e.g., messages, indications, information, and so on), respectively, and, conversely, for receiving and decoding signals 318 and 358 (e.g., QC2308886WO Qualcomm Ref. No.2308886WO 26 messages, indications, information, pilots, and so on), respectively, in accordance with the designated RAT.
  • the WWAN transceivers 310 and 350 include one or more transmitters 314 and 354, respectively, for transmitting and encoding signals 318 and 358, respectively, and one or more receivers 312 and 352, respectively, for receiving and decoding signals 318 and 358, respectively.
  • the UE 302 and the base station 304 each also include, at least in some cases, one or more short-range wireless transceivers 320 and 360, respectively.
  • the short-range wireless transceivers 320 and 360 may be connected to one or more antennas 326 and 366, respectively, and provide means for communicating (e.g., means for transmitting, means for receiving, means for measuring, means for tuning, means for refraining from transmitting, etc.) with other network nodes, such as other UEs, access points, base stations, etc., via at least one designated RAT (e.g., Wi-Fi, LTE Direct, BLUETOOTH®, ZIGBEE®, Z-WAVE®, PC5, dedicated short-range communications (DSRC), wireless access for vehicular environments (WAVE), near-field communication (NFC), ultra- wideband (UWB), etc.) over a wireless communication medium of interest.
  • RAT e.g., Wi-Fi, LTE Direct, BLUETOOTH®, ZIGBEE®, Z
  • the short- range wireless transceivers 320 and 360 may be variously configured for transmitting and encoding signals 328 and 368 (e.g., messages, indications, information, and so on), respectively, and, conversely, for receiving and decoding signals 328 and 368 (e.g., messages, indications, information, pilots, and so on), respectively, in accordance with the designated RAT.
  • the short-range wireless transceivers 320 and 360 include one or more transmitters 324 and 364, respectively, for transmitting and encoding signals 328 and 368, respectively, and one or more receivers 322 and 362, respectively, for receiving and decoding signals 328 and 368, respectively.
  • the short-range wireless transceivers 320 and 360 may be Wi-Fi transceivers, BLUETOOTH® transceivers, ZIGBEE® and/or Z-WAVE® transceivers, NFC transceivers, UWB transceivers, or vehicle-to-vehicle (V2V) and/or vehicle-to- everything (V2X) transceivers.
  • the UE 302 and the base station 304 also include, at least in some cases, satellite signal interfaces 330 and 370, which each include one or more satellite signal receivers 332 and 372, respectively, and may optionally include one or more satellite signal transmitters 334 and 374, respectively.
  • the base station 304 may be a terrestrial base station that may communicate with space vehicles (e.g., space vehicles 112) via the satellite QC2308886WO Qualcomm Ref. No.2308886WO 27 signal interface 370.
  • the base station 304 may be a space vehicle (or other non-terrestrial entity) that uses the satellite signal interface 370 to communicate with terrestrial networks and/or other space vehicles.
  • the satellite signal receivers 332 and 372 may be connected to one or more antennas 336 and 376, respectively, and may provide means for receiving and/or measuring satellite positioning/communication signals 338 and 378, respectively.
  • the 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) signals, etc.
  • GPS global positioning system
  • GLONASS global navigation satellite system
  • NAVIC Indian Regional Navigation Satellite System
  • QZSS Quasi-Zenith Satellite System
  • the satellite signal receiver(s) 332 and 372 are non- terrestrial network (NTN) receivers
  • the satellite positioning/communication signals 338 and 378 may be communication signals (e.g., carrying control and/or user data) originating from a 5G network.
  • the satellite signal receiver(s) 332 and 372 may comprise any suitable hardware and/or software for receiving and processing satellite positioning/communication signals 338 and 378, respectively.
  • the satellite signal receiver(s) 332 and 372 may request information and operations as appropriate from the other systems, and, at least in some cases, perform calculations to determine locations of the UE 302 and the base station 304, respectively, using measurements obtained by any suitable satellite positioning system algorithm.
  • the optional satellite signal transmitter(s) 334 and 374 when present, may be connected to the one or more antennas 336 and 376, respectively, and may provide means for transmitting satellite positioning/communication signals 338 and 378, respectively.
  • the satellite positioning/communication signals 378 may be GPS signals, GLONASS® signals, Galileo signals, Beidou signals, NAVIC, QZSS signals, etc.
  • the satellite positioning/communication signals 338 and 378 may be communication signals (e.g., carrying control and/or user data) originating from a 5G network.
  • the satellite signal transmitter(s) 334 and 374 may comprise any suitable hardware and/or software for transmitting satellite positioning/communication signals 338 and 378, respectively.
  • the base station 304 and the network entity 306 each include one or more network transceivers 380 and 390, respectively, providing means for communicating (e.g., means for transmitting, means for receiving, etc.) with other network entities (e.g., other base stations 304, other network entities 306).
  • the base station 304 may employ the one or more network transceivers 380 to communicate with other base stations 304 or network entities 306 over one or more wired or wireless backhaul links.
  • the network entity 306 may employ the one or more network transceivers 390 to communicate with one or more base station 304 over one or more wired or wireless backhaul links, or with other network entities 306 over one or more wired or wireless core network interfaces.
  • a transceiver may be configured to communicate over a wired or wireless link.
  • a transceiver (whether a wired transceiver or a wireless transceiver) includes transmitter circuitry (e.g., transmitters 314, 324, 354, 364) and receiver circuitry (e.g., receivers 312, 322, 352, 362).
  • a transceiver may be an integrated device (e.g., embodying transmitter circuitry and receiver circuitry in a single device) in some implementations, may comprise separate transmitter circuitry and separate receiver circuitry in some implementations, or may be embodied in other ways in other implementations.
  • the transmitter circuitry and receiver circuitry of a wired transceiver e.g., network transceivers 380 and 390 in some implementations
  • Wireless transmitter circuitry may include or be coupled to a plurality of antennas (e.g., antennas 316, 326, 356, 366), such as an antenna array, that permits the respective apparatus (e.g., UE 302, base station 304) to perform transmit “beamforming,” as described herein.
  • wireless receiver circuitry e.g., receivers 312, 322, 352, 362
  • the transmitter circuitry and receiver circuitry may share the same plurality of antennas (e.g., antennas 316, 326, 356, 366), such that the respective apparatus can only receive or transmit at a given time, not both at the same time.
  • a wireless transceiver e.g., WWAN transceivers 310 and 350, short-range wireless transceivers 320 and 360
  • may QC2308886WO Qualcomm Ref. No.2308886WO 29 also include a network listen module (NLM) or the like for performing various measurements.
  • NLM network listen module
  • the various wireless transceivers e.g., transceivers 310, 320, 350, and 360, and network transceivers 380 and 390 in some implementations
  • wired transceivers e.g., network transceivers 380 and 390 in some implementations
  • a transceiver at least one transceiver
  • wired transceivers e.g., network transceivers 380 and 390 in some implementations
  • backhaul communication between network devices or servers will generally relate to signaling via a wired transceiver
  • wireless communication between a UE (e.g., UE 302) and a base station (e.g., base station 304) will generally relate to signaling via a wireless transceiver.
  • the UE 302, the base station 304, and the network entity 306 also include other components that may be used in conjunction with the operations as disclosed herein.
  • the UE 302, the base station 304, and the network entity 306 include one or more processors 342, 384, and 394, respectively, for providing functionality relating to, for example, wireless communication, and for providing other processing functionality.
  • the processors 342, 384, and 394 may therefore provide means for processing, such as means for determining, means for calculating, means for receiving, means for transmitting, means for indicating, etc.
  • the processors 342, 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, or various combinations thereof.
  • the UE 302, the base station 304, and the network entity 306 include memory circuitry implementing memories 340, 386, and 396 (e.g., each including a memory device), respectively, for maintaining information (e.g., information indicative of reserved resources, thresholds, parameters, and so on).
  • the memories 340, 386, and 396 may therefore provide means for storing, means for retrieving, means for maintaining, etc.
  • the UE 302, the base station 304, and the network entity 306 may include positioning component 348, 388, and 398, respectively.
  • the positioning component 348, 388, and 398 may be hardware circuits that are part of or coupled to the processors 342, QC2308886WO Qualcomm Ref.
  • No.2308886WO 30 384, and 394 respectively, that, when executed, cause the UE 302, the base station 304, and the network entity 306 to perform the functionality described herein.
  • the positioning component 348, 388, and 398 may be external to the processors 342, 384, and 394 (e.g., part of a modem processing system, integrated with another processing system, etc.).
  • the positioning component 348, 388, and 398 may be memory modules stored in the memories 340, 386, and 396, respectively, that, when executed by the processors 342, 384, and 394 (or a modem processing system, another processing system, etc.), cause the UE 302, the base station 304, and the network entity 306 to perform the functionality described herein.
  • FIG. 3A illustrates possible locations of the positioning component 348, which may be, for example, part of the one or more WWAN transceivers 310, the memory 340, the one or more processors 342, or any combination thereof, or may be a standalone component.
  • FIG.3B illustrates possible locations of the positioning component 388, which may be, for example, part of the one or more WWAN transceivers 350, the memory 386, the one or more processors 384, or any combination thereof, or may be a standalone component.
  • FIG.3C illustrates possible locations of the positioning component 398, which may be, for example, part of the one or more network transceivers 390, the memory 396, the one or more processors 394, or any combination thereof, or may be a standalone component.
  • the UE 302 may include one or more sensors 344 coupled to the one or more processors 342 to provide means for sensing or detecting movement and/or orientation information that is independent of motion data derived from signals received by the one or more WWAN transceivers 310, the one or more short-range wireless transceivers 320, and/or the satellite signal interface 330.
  • the sensor(s) 344 may include an accelerometer (e.g., a micro-electrical mechanical systems (MEMS) device), a gyroscope, a geomagnetic sensor (e.g., a compass), an altimeter (e.g., a barometric pressure altimeter), and/or any other type of movement detection sensor.
  • MEMS micro-electrical mechanical systems
  • the senor(s) 344 may include a plurality of different types of devices and combine their outputs in order to provide motion information.
  • the sensor(s) 344 may use a combination of a multi-axis accelerometer and orientation sensors to provide the ability to compute positions in two-dimensional (2D) and/or three-dimensional (3D) coordinate systems.
  • QC2308886WO Qualcomm Ref. No.2308886WO 31 [0094]
  • the UE 302 includes a user interface 346 providing means for providing indications (e.g., audible and/or visual indications) to a user and/or for receiving user input (e.g., upon user actuation of a sensing device such a keypad, a touch screen, a microphone, and so on).
  • the base station 304 and the network entity 306 may also include user interfaces.
  • IP packets from the network entity 306 may be provided to the processor 384.
  • the one or more processors 384 may implement functionality for an RRC layer, a packet data convergence protocol (PDCP) layer, a radio link control (RLC) layer, and a medium access control (MAC) layer.
  • PDCP packet data convergence protocol
  • RLC radio link control
  • MAC medium access control
  • the one or more processors 384 may provide RRC layer functionality associated with broadcasting of system information (e.g., master information block (MIB), system information blocks (SIBs)), 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 (ciphering, deciphering, integrity protection, integrity verification), and handover support functions; RLC layer functionality associated with the transfer of upper layer PDUs, error correction through automatic repeat request (ARQ), concatenation, segmentation, and reassembly of RLC service data units (SDUs), re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, scheduling information reporting, error correction, priority handling, and logical channel prioritization.
  • RRC layer functionality associated with broadcasting of system
  • the transmitter 354 and the receiver 352 may implement Layer-1 (L1) functionality associated with various signal processing functions.
  • Layer-1 which includes a physical (PHY) layer, may include error detection on the transport channels, forward error correction (FEC) coding/decoding of the transport channels, interleaving, rate matching, mapping onto physical channels, modulation/demodulation of physical channels, and MIMO antenna processing.
  • FEC forward error correction
  • the transmitter 354 handles mapping to signal constellations 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)).
  • BPSK binary phase-shift keying
  • QPSK quadrature phase-shift keying
  • M-PSK M-phase-shift keying
  • M-QAM M-quadrature amplitude modulation
  • the coded and modulated symbols may then be split into parallel QC2308886WO Qualcomm Ref. No.2308886WO 32 streams.
  • Each stream may then be mapped to an orthogonal frequency division multiplexing (OFDM) subcarrier, multiplexed with a reference signal (e.g., pilot) in the time and/or frequency domain, and then combined together using an inverse fast Fourier transform (IFFT) to produce a physical channel carrying a time domain OFDM symbol stream.
  • OFDM symbol stream is spatially precoded to produce multiple spatial streams.
  • Channel estimates from a channel estimator may be used to determine the coding and modulation scheme, as well as for spatial processing.
  • the channel estimate may be derived from a reference signal and/or channel condition feedback transmitted by the UE 302.
  • Each spatial stream may then be provided to one or more different antennas 356.
  • the transmitter 354 may modulate an RF carrier with a respective spatial stream for transmission.
  • the receiver 312 receives a signal through its respective antenna(s) 316.
  • the receiver 312 recovers information modulated onto an RF carrier and provides the information to the one or more processors 342.
  • the transmitter 314 and the receiver 312 implement Layer-1 functionality associated with various signal processing functions.
  • the receiver 312 may perform spatial processing on the information to recover any spatial streams destined for the UE 302. If multiple spatial streams are destined for the UE 302, they may be combined by the receiver 312 into a single OFDM symbol stream.
  • the receiver 312 then converts the OFDM symbol stream from the time-domain to the frequency domain using a fast Fourier transform (FFT).
  • FFT fast Fourier transform
  • the frequency domain signal comprises a separate OFDM symbol stream for each subcarrier of the OFDM signal.
  • the symbols on each subcarrier, and the reference signal are recovered and demodulated by determining the most likely signal constellation points transmitted by the base station 304. These soft decisions may be based on channel estimates computed by a channel estimator.
  • the soft decisions are then decoded and de-interleaved to recover the data and control signals that were originally transmitted by the base station 304 on the physical channel.
  • the data and control signals are then provided to the one or more processors 342, which implements Layer-3 (L3) and Layer-2 (L2) functionality.
  • L3 Layer-3
  • L2 Layer-2
  • the one or more processors 342 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, and control signal processing to recover IP packets from the core network.
  • the one or more processors 342 are also responsible for error detection. QC2308886WO Qualcomm Ref.
  • the one or more processors 342 provides RRC layer functionality associated with system information (e.g., MIB, SIBs) acquisition, RRC connections, and measurement reporting; PDCP layer functionality associated with header compression/decompression, and security (ciphering, deciphering, integrity protection, integrity verification); RLC layer functionality associated with the transfer of upper layer PDUs, error correction through ARQ, concatenation, segmentation, and reassembly of RLC SDUs, re-segmentation of RLC data PDUs, and reordering of RLC data PDUs; and MAC layer functionality associated with mapping between logical channels and transport channels, multiplexing of MAC SDUs onto transport blocks (TBs), demultiplexing of MAC SDUs from TBs, scheduling information reporting, error correction through hybrid automatic repeat request (HARQ), priority handling, and logical channel prioritization.
  • RRC layer functionality associated with system information (e.g., MIB, SIBs) acquisition, RRC connections, and measurement reporting
  • Channel estimates derived by the channel estimator from a reference signal or feedback transmitted by the base station 304 may be used by the transmitter 314 to select the appropriate coding and modulation schemes, and to facilitate spatial processing.
  • the spatial streams generated by the transmitter 314 may be provided to different antenna(s) 316.
  • the transmitter 314 may modulate an RF carrier with a respective spatial stream for transmission.
  • the uplink transmission is processed at the base station 304 in a manner similar to that described in connection with the receiver function at the UE 302.
  • the receiver 352 receives a signal through its respective antenna(s) 356.
  • the receiver 352 recovers information modulated onto an RF carrier and provides the information to the one or more processors 384.
  • the one or more processors 384 provides demultiplexing between transport and logical channels, packet reassembly, deciphering, header decompression, control signal processing to recover IP packets from the UE 302. IP packets from the one or more processors 384 may be provided to the core network. The one or more processors 384 are also responsible for error detection.
  • the UE 302, the base station 304, and/or the network entity 306 are shown in FIGS.3A, 3B, and 3C as including various components that may be configured according to the various examples described herein. It will be appreciated, however, that the illustrated components may have different functionality in different designs. In QC2308886WO Qualcomm Ref.
  • FIGS. 3A to 3C are optional in alternative configurations and the various aspects include configurations that may vary due to design choice, costs, use of the device, or other considerations.
  • a particular implementation of UE 302 may omit the WWAN transceiver(s) 310 (e.g., a wearable device or tablet computer or personal computer (PC) or laptop may have Wi-Fi and/or BLUETOOTH® capability without cellular capability), or may omit the short- range wireless transceiver(s) 320 (e.g., cellular-only, etc.), or may omit the satellite signal interface 330, or may omit the sensor(s) 344, and so on.
  • WWAN transceiver(s) 310 e.g., a wearable device or tablet computer or personal computer (PC) or laptop may have Wi-Fi and/or BLUETOOTH® capability without cellular capability
  • the short- range wireless transceiver(s) 320 e.g., cellular-only, etc
  • a particular implementation of the base station 304 may omit the WWAN transceiver(s) 350 (e.g., a Wi-Fi “hotspot” access point without cellular capability), or may omit the short-range wireless transceiver(s) 360 (e.g., cellular-only, etc.), or may omit the satellite signal interface 370, and so on.
  • WWAN transceiver(s) 350 e.g., a Wi-Fi “hotspot” access point without cellular capability
  • the short-range wireless transceiver(s) 360 e.g., cellular-only, etc.
  • satellite signal interface 370 e.g., satellite signal interface
  • the data buses 308, 382, and 392 may form, or be part of, a communication interface of the UE 302, the base station 304, and the network entity 306, respectively.
  • the data buses 308, 382, and 392 may provide communication between them.
  • the components of FIGS.3A, 3B, and 3C may be implemented in various ways. In some implementations, the components of FIGS. 3A, 3B, and 3C may 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).
  • each circuit may use and/or incorporate at least one memory component for storing information or executable code used by the circuit to provide this functionality.
  • some or all of the functionality represented by blocks 310 to 346 may be implemented by processor and memory component(s) of the UE 302 (e.g., by execution of appropriate code and/or by appropriate configuration of processor components).
  • some or all of the functionality represented by blocks 350 to 388 may be implemented by processor and memory component(s) of the base station 304 (e.g., by execution of appropriate code QC2308886WO Qualcomm Ref. No.2308886WO 35 and/or by appropriate configuration of processor components).
  • blocks 390 to 398 may be implemented by processor and memory component(s) of the network entity 306 (e.g., by execution of appropriate code and/or by appropriate configuration of processor components).
  • processor and memory component(s) of the network entity 306 e.g., by execution of appropriate code and/or by appropriate configuration of processor components.
  • various operations, acts, and/or functions are described herein as being performed “by a UE,” “by a base station,” “by a network entity,” etc.
  • the network entity 306 may be implemented as a core network component. In other designs, the network entity 306 may be distinct from a network operator or operation of the cellular network infrastructure (e.g., NG RAN 220 and/or 5GC 210/260).
  • the network entity 306 may be a component of a private network that may be configured to communicate with the UE 302 via the base station 304 or independently from the base station 304 (e.g., over a non-cellular communication link, such as Wi-Fi).
  • LTE Long-Term Evolution
  • LMF Location Server
  • target device e.g., a UE
  • LMF Location server
  • reference sources physical entities or parts of physical entities that provide signals that can be measured by a target device in order to obtain the location of the target device.
  • An LPP session is used between a location server and a target device in order to obtain location- related measurements or a location estimate or to transfer assistance data.
  • a single LPP session is used to support a single location request and multiple LPP sessions can be used between the same endpoints to support multiple different location requests.
  • Each LPP session comprises one or more LPP transactions (or procedures), with each LPP transaction performing a single operation (capability exchange, assistance data transfer, or location information transfer).
  • Each LPP transaction involves the exchange of one or more LPP messages between the location server and the target device.
  • the general format of an LPP message consists of a set of common fields followed by a body. The body (which may be empty) contains information specific to a particular message QC2308886WO Qualcomm Ref.
  • An LPP session generally includes at least a capability transfer or indication procedure, an assistance data transfer or delivery procedure, and a location information transfer or delivery procedure.
  • FIG.4 illustrates an example LPP capability transfer procedure 410, LPP assistance data transfer procedure 430, and LPP location information transfer procedure 450 between a target device (labeled “Target”) and a location server (labeled “Server”), according to aspects of the disclosure.
  • the purpose of an LPP capability transfer procedure 410 is to enable the transfer of capabilities from the target device (e.g., a UE 204) to the location server (e.g., an LMF 270).
  • Capabilities in this context refer to positioning and protocol capabilities related to LPP and the positioning methods supported by LPP.
  • the location server e.g., an LMF 270
  • the target device indicates the types of capabilities needed from the target device (e.g., UE 204) in an LPP Request Capabilities message.
  • the target device responds with an LPP Provide Capabilities message.
  • the capabilities included in the LPP Provide Capabilities message should correspond to any capability types specified in the LPP Request Capabilities message. Specifically, for each positioning method for which a request for capabilities is included in the LPP Request Capabilities message, if the target device supports this positioning method, the target device includes the capabilities of the target device for that supported positioning method in the LPP Provide Capabilities message.
  • the target device For an LPP capability indication procedure, the target device provides unsolicited (i.e., without receiving an LPP Request Capabilities message) capabilities to the location server in an LPP Provide Capabilities message.
  • the purpose of an LPP assistance data transfer procedure 430 is to enable the target device to request assistance data from the location server to assist in positioning, and to enable the location server to transfer assistance data to the target device in the absence of a request.
  • the target device sends an LPP Request Assistance Data message to the location server.
  • the location server responds to the target device with an LPP Provide Assistance Data message containing assistance data.
  • the transferred assistance data should match or be a subset of the assistance data requested in the LPP Request Assistance Data.
  • the location server may also provide any not requested information that it considers useful to the target device.
  • the location server QC2308886WO Qualcomm Ref. No.2308886WO 37 may also transmit one or more additional LPP Provide Assistance Data messages to the target device containing further assistance data.
  • the location server provides unsolicited assistance data necessary for positioning.
  • the assistance data may be provided periodically or non-periodically.
  • the purpose of an LPP location information transfer procedure 450 is to enable the location server to request location measurement data and/or a location estimate from the target device, and to enable the target device to transfer location measurement data and/or a location estimate to a location server in the absence of a request.
  • the location server sends an LPP Request Location Information message to the target device to request location information, indicating the type of location information needed and potentially the associated QoS.
  • the target device responds with an LPP Provide Location Information message to the location server to transfer location information.
  • the location information transferred should match or be a subset of the location information requested by the LPP Request Location Information unless the location server explicitly allows additional location information. More specifically, if the requested information is compatible with the target device’s capabilities and configuration, the target device includes the requested information in an LPP Provide Location Information message.
  • the target device continues to process the message as if it contained only information for the supported positioning methods and handles the signaling content of the unsupported positioning methods by LPP error detection. If requested by the LPP Request Lactation Information message, the target device sends additional LPP Provide Location Information messages to the location server to transfer additional location information.
  • LPP location information delivery procedure supports the delivery of positioning estimations based on unsolicited service. [0112] LPP also defines procedures related to error indication for when a receiving endpoint (target device or location server) receives erroneous or unexpected data or detects that certain data are missing.
  • LPP when a receiving endpoint determines that a received LPP message contains an error, it can return an Error message to the transmitting endpoint indicating the error or errors and discard the received/erroneous message. If the receiving endpoint is able to determine that the erroneous LPP message is an LPP Error QC2308886WO Qualcomm Ref. No.2308886WO 38 or Abort Message, then the receiving endpoint discards the received message without returning an Error message to the transmitting endpoint. [0113] LPP also defines procedures related to abort indication to allow a target device or location server to abort an ongoing procedure due to some unexpected event (e.g., cancellation of a location request by an LCS client).
  • An Abort procedure can also be used to stop an ongoing procedure (e.g., periodic location reporting from the target device).
  • a first endpoint determines that procedure P must be aborted and sends an Abort message to a second endpoint carrying the transaction ID for procedure P. The second endpoint then aborts procedure P.
  • NR supports various sidelink ranging techniques.
  • Sidelink-based ranging and positioning (SLRP) enables the determination of the relative distance(s) between UEs and optionally their absolute position(s), where the absolute position of at least one involved UE is known.
  • SLRP is based on calculating an inter-UE round-trip-time (RTT) measurement, as determined from the transmit and receive times of sidelink positioning reference signals (SL-PRS) (a wideband positioning signal defined for sidelink-based positioning).
  • RTT round-trip-time
  • S-PRS sidelink positioning reference signals
  • Each UE reports an RTT measurement to all other participating UEs, along with its location (if known). For UEs having zero or inaccurate knowledge of their location, the RTT procedure yields an inter-UE range between the involved UEs. For UEs having accurate knowledge of their location, the range yields an absolute position.
  • FIG. 5 illustrates an example sidelink-based ranging and positioning (SLRP) procedure 500, according to aspects of the disclosure.
  • An SLRP procedure 500 is established using the Sidelink Positioning Protocol (SLPP) to identify participating UEs, perform session establishment, and exchange measurements and measurement results.
  • SLPP reuses the basic Long-Term Evolution (LTE) positioning protocol (LPP) message constructs of Request/Provide Capabilities, Request/Provide Assistance Data, and Request/Provide Location Information.
  • LTE Long-Term Evolution
  • An SLRP procedure 500 begins with a target UE 204-2 (a UE with an unknown or inaccurate location that is attempting to be located) transmitting, at stage 505, an SLPP Request Capabilities message requesting capability information from one or QC2308886WO Qualcomm Ref. No.2308886WO 39 more peer UEs.
  • a target UE 204-2 a UE with an unknown or inaccurate location that is attempting to be located
  • an SLPP Request Capabilities message requesting capability information from one or QC2308886WO Qualcomm Ref. No.2308886WO 39 more peer UEs.
  • the anchor UE 204-1 is capable of being an anchor UE for the SLRP procedure 500.
  • the anchor UE 204-1 responds with an SLPP Provide Capabilities message that includes an indication that it is capable of being an anchor UE for the SLRP procedure 500.
  • the SLPP Provide Capabilities message may also include the location of the anchor UE 204- 1, or this may be provided later.
  • the anchor UE 204-1 transmits an SLPP Request Assistance Data message to the target UE 204-2.
  • the target UE 204-2 transmits an SLPP Provide Assistance Data message to the anchor UE 204-1, which may include the configuration of one or more SL-PRS resources to be transmitted by the anchor UE 204-1 for measurement by the target UE 204-2 for the SLRP procedure 500.
  • the SLPP Provide Assistance Data message may include configuration information for one or more SL-PRS resources to be transmitted by the target UE 204-2 for measurement by the anchor UE 204-1.
  • the target UE 204-2 may transmit an SLPP Request Assistance Data message to the anchor UE 204-1 to obtain configuration information for the one or more SL-PRS resources transmitted by the anchor UE 204-1 for measurement by the target UE 204-2.
  • the target UE 204-2 provides the requested configuration information in an SLPP Provide Assistance Data message.
  • the respective UE 204 may not transmit an SLPP Request Assistance Data message, but instead, only the SLPP Provide Assistance Data message.
  • the involved peer UEs 204 transmit the configured SL-PRS resources to each other.
  • the anchor UE 204-1 of the target UE 204-2 may transmit SL-PRS resources (e.g., in the case of a sidelink time-difference of arrival (SL-TDOA) procedure).
  • the resources on which the SL-PRS are transmitted may be configured during the assistance data exchange(s) at stages 515 and 520.
  • the anchor UE 204-1 measures the reception-to-transmission (Rx-Tx) time difference between the transmission time of the SL-PRS resource(s) at stage 525 and the reception time of the SL-PRS resource(s) at stage 530.
  • the target UE 204-2 measures the Rx-Tx time difference between the reception time of the SL-PRS resource(s) at stage 525 and the transmission time of the SL-PRS resource(s) at stage 530.
  • FIG. 5 QC2308886WO Qualcomm Ref. No.2308886WO 40 illustrates the anchor UE 204-1 transmitting SL-PRS first
  • the target UE 204-2 may instead transmit PRS first.
  • the target UE 204-2 transmits an SLPP Request Location Information message to the anchor UE 204-1.
  • the anchor UE 204-1 responds with an SLPP Provide Location Information message that includes the Rx-Tx time difference measurement(s) obtained by the anchor UE 204-1.
  • the anchor UE 204-1 may transmit an SLPP Request Location Information message to the target UE 204-2 and the target UE 204-2 may respond with an SLPP Provide Location Information message including the Rx-Tx time difference measurement(s) obtained by the target UE 204-2. If the anchor UE 204-1 has not yet provided its location to the target UE 204-2, it does so at this point.
  • the target UE 204-2 is then able to determine the RTT between itself and the anchor UE 204-1 based on the Rx-Tx time difference measurements. Based on the RTT measurement and the speed of light, the target UE 204-2 can then estimate the distance (or range) between the two UEs 204. If the target UE 204-2 also has the absolute location (e.g., geographic coordinates) of the anchor UE 204-1 and two or more additional anchor UEs 204-1, the target UE 204-2 can use that location and the distance to the anchor UEs 204-1 to determine its own absolute location (e.g., based on trilateration).
  • the absolute location e.g., geographic coordinates
  • FIG.5 illustrates one anchor UE 204-1
  • a target UE 204-2 may perform, or attempt to perform, the SLRP procedure 500 with multiple anchor UEs 204-1.
  • FIG. 5 illustrates the SLPP Request Location Information being transmitted after the SL-PRS resources are transmitted, it may be transmitted before SL-PRS transmission.
  • FIG.6 is a diagram 600 illustrating an example frame structure, according to aspects of the disclosure.
  • the frame structure may be a downlink or uplink frame structure.
  • Other wireless communications technologies may have different frame structures and/or different channels.
  • LTE and in some cases NR, utilizes orthogonal frequency-division multiplexing (OFDM) on the downlink and single-carrier frequency division multiplexing (SC-FDM) on the uplink.
  • OFDM orthogonal frequency-division multiplexing
  • SC-FDM single-carrier frequency division multiplexing
  • OFDM and SC-FDM partition the system bandwidth into multiple (K) orthogonal subcarriers, which are also commonly referred to as tones, bins, etc.
  • K orthogonal subcarriers
  • Each subcarrier may QC2308886WO Qualcomm Ref. No.2308886WO 41 be modulated with data.
  • modulation symbols are sent in the frequency domain with OFDM and in the time domain with SC-FDM.
  • the spacing between adjacent subcarriers may be fixed, and the total number of subcarriers (K) may be dependent on the system bandwidth.
  • the spacing of the subcarriers may be 15 kilohertz (kHz) and the minimum resource allocation (resource block) may be 12 subcarriers (or 180 kHz). Consequently, the nominal fast Fourier transform (FFT) size may be equal to 128, 256, 512, 1024, or 2048 for system bandwidth of 1.25, 2.5, 5, 10, or 20 megahertz (MHz), respectively.
  • FFT fast Fourier transform
  • the system bandwidth may also be partitioned into subbands.
  • a subband may cover 1.08 MHz (i.e., 6 resource blocks), and there may be 1, 2, 4, 8, or 16 subbands for system bandwidth of 1.25, 2.5, 5, 10, or 20 MHz, respectively.
  • LTE supports a single numerology (subcarrier spacing (SCS), symbol length, etc.).
  • SCS subcarrier spacing
  • For 15 kHz SCS ( ⁇ 0), there is one slot per subframe, 10 slots per frame, the slot duration is 1 millisecond (ms), the symbol duration is 66.7 microseconds ( ⁇ s), and the maximum nominal system bandwidth (in MHz) with a 4K FFT size is 50.
  • For 30 kHz SCS ( ⁇ 1), there are two slots per subframe, 20 slots per frame, the slot duration is 0.5 ms, the symbol duration is 33.3 ⁇ s, and the maximum nominal system bandwidth (in MHz) with a 4K FFT size is 100.
  • For 60 kHz SCS ( ⁇ 2), there are four slots per subframe, 40 slots per frame, the slot duration is 0.25 ms, the symbol duration is 16.7 ⁇ s, and the maximum nominal system bandwidth (in MHz) with a 4K FFT size is 200.
  • For 120 kHz SCS ( ⁇ 3), there are eight slots per subframe, 80 slots per frame, the slot duration is 0.125 ms, the symbol duration is 8.33 ⁇ s, and the maximum nominal system bandwidth (in MHz) with a 4K FFT size is 400.
  • a numerology of 15 kHz is used.
  • a 10 ms frame is divided into 10 equally sized subframes of 1 ms each, and each subframe includes one time slot.
  • time is represented horizontally (on the X axis) with time increasing from left to right, while frequency is represented vertically (on the Y axis) with frequency increasing (or decreasing) from bottom to top.
  • a resource grid may be used to represent time slots, each time slot including one or more time-concurrent resource blocks (RBs) (also referred to as physical RBs (PRBs)) in the frequency domain.
  • RBs time-concurrent resource blocks
  • PRBs physical RBs
  • the resource grid is further divided into multiple resource elements (REs).
  • An RE may correspond to one symbol length in the time domain and one subcarrier in the frequency domain.
  • an RB may contain 12 consecutive subcarriers in the frequency domain and seven consecutive symbols in the time domain, for a total of 84 REs.
  • an RB may contain 12 consecutive subcarriers in the frequency domain and six consecutive symbols in the time domain, for a total of 72 REs.
  • the number of bits carried by each RE depends on the modulation scheme.
  • Some of the REs may carry reference (pilot) signals (RS).
  • the reference signals may include positioning reference signals (PRS), tracking reference signals (TRS), phase tracking reference signals (PTRS), cell-specific reference signals (CRS), channel state information reference signals (CSI-RS), demodulation reference signals (DMRS), primary synchronization signals (PSS), secondary synchronization signals (SSS), synchronization signal blocks (SSBs), sounding reference signals (SRS), etc., depending on whether the illustrated frame structure is used for uplink or downlink communication.
  • FIG.6 illustrates example locations of REs carrying a reference signal (labeled “R”).
  • R reference signal
  • a collection of resource elements (REs) that are used for transmission of PRS is referred to as a “PRS resource.”
  • the collection of resource elements can span multiple PRBs in the frequency domain and ‘N’ (such as 1 or more) consecutive symbol(s) within a slot in the time domain. In a given OFDM symbol in the time domain, a PRS resource occupies consecutive PRBs in the frequency domain.
  • the transmission of a PRS resource within a given PRB has a particular comb size (also referred to as the “comb density”).
  • a comb size ‘N’ represents the subcarrier spacing (or frequency/tone spacing) within each symbol of a PRS resource configuration.
  • PRS are transmitted in every Nth subcarrier of a symbol of a PRB.
  • REs corresponding to every fourth subcarrier such as subcarriers 0, 4, 8 are used to transmit PRS of the PRS resource.
  • FIG. 6 illustrates an example PRS resource QC2308886WO Qualcomm Ref. No.2308886WO 43 configuration for comb-4 (which spans four symbols). That is, the locations of the shaded REs (labeled “R”) indicate a comb-4 PRS resource configuration.
  • a DL-PRS resource may span 2, 4, 6, or 12 consecutive symbols within a slot with a fully frequency-domain staggered pattern.
  • a DL-PRS resource can be configured in any higher layer configured downlink or flexible (FL) symbol of a slot.
  • FL downlink or flexible
  • 2-symbol comb-2 ⁇ 0, 1 ⁇ ; 4-symbol comb-2: ⁇ 0, 1, 0, 1 ⁇ ; 6-symbol comb-2: ⁇ 0, 1, 0, 1, 0, 1 ⁇ ; 12-symbol comb-2: ⁇ 0, 1, 0, 1, 0, 1, 0, 1, 0, 1, 0, 1 ⁇ ; 4-symbol comb-4: ⁇ 0, 2, 1, 3 ⁇ (as in the example of FIG.
  • a “PRS resource set” is a set of PRS resources used for the transmission of PRS signals, where each PRS resource has a PRS resource ID. In addition, the 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 is associated with a particular TRP (identified by a TRP ID).
  • the PRS resources in a PRS resource set have the same periodicity, a common muting pattern configuration, and the same repetition factor (such as “PRS- ResourceRepetitionFactor”) across slots.
  • the periodicity is the time from the first repetition of the first PRS resource of a first PRS instance to the same first repetition of the same first PRS resource of the next PRS instance.
  • the repetition factor may have a length selected from ⁇ 1, 2, 4, 6, 8, 16, 32 ⁇ slots.
  • a PRS resource ID in a PRS resource set is associated with a single beam (or beam ID) transmitted from a single TRP (where a TRP may transmit one or more beams). That is, each PRS resource of a PRS resource set may be transmitted on a different beam, and as such, a “PRS resource,” or simply “resource,” also can be referred to as a “beam.” Note that this does not have any implications on whether the TRPs and the beams on which PRS are transmitted are known to the UE. QC2308886WO Qualcomm Ref.
  • a “PRS instance” or “PRS occasion” is one instance of a periodically repeated time window (such as a group of one or more consecutive slots) where PRS are expected to be transmitted.
  • a PRS occasion also may be referred to as a “PRS positioning occasion,” a “PRS positioning instance, a “positioning occasion,” “a positioning instance,” a “positioning repetition,” or simply an “occasion,” an “instance,” or a “repetition.”
  • a “positioning frequency layer” (also referred to simply as a “frequency layer”) is a collection of one or more PRS resource sets across one or more TRPs that have the same values for certain parameters.
  • the collection of PRS resource sets has the same subcarrier spacing and cyclic prefix (CP) type (meaning all numerologies supported for the physical downlink shared channel (PDSCH) are also supported for PRS), the same Point A, the same value of the downlink PRS bandwidth, the same start PRB (and center frequency), and the same comb-size.
  • the Point A parameter takes the value of the parameter “ARFCN-ValueNR” (where “ARFCN” stands for “absolute radio-frequency channel number”) and is an identifier/code that specifies a pair of physical radio channel used for transmission and reception.
  • the downlink PRS bandwidth may have a granularity of four PRBs, with a minimum of 24 PRBs and a maximum of 272 PRBs.
  • a frequency layer is somewhat like the concept of component carriers and bandwidth parts (BWPs), but different in that component carriers and BWPs are used by one base station (or a macro cell base station and a small cell base station) to transmit data channels, while frequency layers are used by several (usually three or more) base stations to transmit PRS.
  • a UE may indicate the number of frequency layers it can support when it sends the network its positioning capabilities, such as during an LTE positioning protocol (LPP) session. For example, a UE may indicate whether it can support one or four positioning frequency layers.
  • LPP LTE positioning protocol
  • positioning reference signal generally refer to specific reference signals that are used for positioning in NR and LTE systems.
  • the terms “positioning reference signal” and “PRS” may also refer to any type of reference signal that can be used for positioning, such as but not limited to, PRS as defined in LTE and NR, TRS, PTRS, CRS, CSI-RS, DMRS, PSS, SSS, SSB, SRS, UL-PRS, etc.
  • the terms “positioning reference signal” and “PRS” may refer to downlink, 44 QC2308886WO Qualcomm Ref. No.2308886WO 45 uplink, or sidelink positioning reference signals, unless otherwise indicated by the context.
  • a downlink positioning reference signal may be referred to as a “DL-PRS”
  • an uplink positioning reference signal e.g., an SRS-for-positioning, PTRS
  • a sidelink positioning reference signal may be referred to as an “SL-PRS.”
  • the signals may be prepended with “DL,” “UL,” or “SL” to distinguish the direction.
  • DL-DMRS is different from “DL-DMRS.”
  • Sidelink communication takes place in transmission or reception resource pools.
  • the minimum resource allocation unit is a sub-channel (e.g., a collection of consecutive PRBs in the frequency domain).
  • resource allocation is in one slot intervals.
  • some slots are not available for sidelink, and some slots contain feedback resources.
  • sidelink resources can be (pre)configured to occupy fewer than the 14 symbols of a slot.
  • Sidelink resources are configured at the radio resource control (RRC) layer.
  • the RRC configuration can be by pre-configuration (e.g., preloaded on the UE) or configuration (e.g., from a serving base station).
  • NR sidelinks support hybrid automatic repeat request (HARQ) retransmission.
  • HARQ hybrid automatic repeat request
  • FIG.7A is a diagram 700 of an example slot structure without feedback resources, according to aspects of the disclosure.
  • time is represented horizontally and frequency is represented vertically.
  • the length of each block is one orthogonal frequency division multiplexing (OFDM) symbol, and the 14 symbols make up a slot.
  • the height of each block is one sub-channel.
  • the (pre)configured sub-channel size can be selected from the set of ⁇ 10, 15, 20, 25, 50, 75, 100 ⁇ PRBs.
  • QC2308886WO Qualcomm Ref. No.2308886WO 46 [0142]
  • the first symbol is a repetition of the preceding symbol and is used for automatic gain control (AGC) setting.
  • AGC automatic gain control
  • FIG. 7A is a diagram 750 of an example slot structure with feedback resources, according to aspects of the disclosure. In the example of FIG. 7B, time is represented horizontally and frequency is represented vertically.
  • the slot structure illustrated in FIG. 7B is similar to the slot structure illustrated in FIG. 7A, except that the slot structure illustrated in FIG. 7B includes feedback resources. Specifically, two symbols at the end of the slot have been dedicated to the PSFCH. The first PSFCH symbol is a repetition of the second PSFCH symbol for AGC setting. In addition to the gap symbol after the PSSCH, there is a gap symbol after the two PSFCH symbols.
  • resources for the PSFCH can be configured with a periodicity selected from the set of ⁇ 0, 1, 2, 4 ⁇ slots.
  • the PSCCH carries sidelink control information (SCI).
  • SCI-1 First stage SCI
  • SCI-2 second stage SCI
  • SCI-2 is transmitted on the PSSCH and contains information for decoding the data that will be transmitted on the shared channel (SCH) of the sidelink.
  • SCI-1 information is decodable by all UEs, whereas SCI-2 information may include formats that are only decodable by certain UEs. This ensures that new features can be introduced in SCI-2 while maintaining resource reservation backward compatibility in SCI-1.
  • Both SCI-1 and SCI-2 use the PDCCH polar coding chain, illustrated in FIG. 8. FIG.
  • FIG. 8 is a diagram 800 showing how the SCH is established on a sidelink between two or more UEs, according to aspects of the disclosure.
  • information in the SCI-1802 is used for resource allocation 804 (by the network or the involved UEs) for the SCI-2806 46 QC2308886WO Qualcomm Ref. No.2308886WO 47 and SCH 808.
  • information in the 8CI-1802 is used to determine/decode the contents of the SCI-2806 transmitted on the allocated resources.
  • a receiver UE needs both the resource allocation 804 and the SCI-1 802 to decode the SCI-2 806.
  • Information in the SCI-2806 is then used to determine/decode the SCH 808.
  • SCI-1802 includes a number of parameters, including (1) the priority (QoS value), (2) the PSSCH resource assignment (i.e., the frequency/time resource for PSSCH), (3) the resource reservation period (if enabled), (4) the PSSCH DMRS pattern (if more than one pattern is (pre)configured), (5) the SCI-2 format (e.g., information regarding the size of the SCI-2806), (6) a two-bit beta offset for the control resource allocation for SCI-2806, (7) the number of PSSCH DMRS port(s) (1 or 2), and/or (8) a five-bit modulation and coding scheme (MCS) identifier.
  • the PSSCH resource assignment i.e., the frequency/time resource for PSSCH
  • the resource reservation period if enabled
  • PSSCH DMRS pattern if more than one pattern is (pre)configured
  • the SCI-2 format e.g., information regarding the size of the SCI-2806
  • SCI-2 formats are still being developed, but the general design is that all SCI-2 formats will have the following: (1) HARQ process identifier (ID), (2) a new data indicator (NDI), (3) a source ID, (4) a destination ID, and/or (5) a CSI report trigger (applicable to unicast only).
  • ID HARQ process identifier
  • NDI new data indicator
  • NDI new data indicator
  • a source ID i.e., a source ID
  • (4) a destination ID i.e., a CSI report trigger (applicable to unicast only).
  • a CSI report trigger i.e., negative acknowledgment (NACK)-only distance- based feedback
  • NACK negative acknowledgment
  • FIG.9 illustrates an example frequency domain structure of PRS bandwidth aggregation on two positioning frequency layers (PFLs), according to aspects of the disclosure.
  • diagram 900 shows an example frequency domain gap between two PRS (e.g., DL-PRS or SL-PRS), labelled “PRS1” and “PRS2,” transmitted in two contiguous component carriers, labelled “CC1” and “CC2.”
  • PRS1 DL-PRS
  • PRS2 SL-PRS
  • CC1 contiguous component carriers
  • Diagram 950 illustrates the impact of gap size on positioning accuracy.
  • the total bandwidth is 200 MHz with different frequency domain gaps between the two aggregated PRS resources (PRS1 and PRS2).
  • positioning accuracy decreases as the gap size increases.
  • the network e.g., LMF 270
  • the network configures PRS for bandwidth aggregation for the UE (e.g., in an LPP Provide Assistance Data message or an LPP Request Location Information message)
  • some restrictions should be met to achieve the QC2308886WO Qualcomm Ref. No.2308886WO 48 positioning accuracy gain from the large bandwidth.
  • the gap size between two PRS e.g., PRS1 and PRS2
  • the adjacent CCs e.g., CC1 and CC2
  • X indicates the percentage of the gap size to the total bandwidth size.
  • PRS resource aggregation may also be performed in New Radio unlicensed spectrum (NR-U) and sidelink positioning use cases.
  • NR-U New Radio unlicensed spectrum
  • a transmitting UE may have indicated to the receiving UE that it will transmit PRS in three PFLs, but may not be able to gain access (e.g., via an LBT procedure) to all three PFLs at each transmission occasion, and therefore, there may be transmission occasions where the transmitting UE cannot transmit PRS on all three PFLs.
  • FIG.10 illustrates an example scenario where a receiving UE is configured to aggregate PRS in three PFLs (labeled “PFL1,” “PFL2,” and “PFL3”), according to aspects of the disclosure.
  • the PRS resources in PFL2 are not available for aggregation, as indicated by the large “X” in diagram 1000. This may be due to, for example, collision with another channel or failure of the transmitting UE to gain access to PFL2. As shown in diagram 1050, this results in an effective gap between PFL1 and PFL3 that is the size of PFL2.
  • DL-PRS when PRS in one of the aggregated PFLs is dropped (e.g., because of collision with SSB), one of the following may be selected for location server-based positioning (e.g., LPP-based positioning): (1) drop all positioning measurements in all aggregated PFLs in the same symbol(s), or (2) still perform positioning measurements based on the remaining PRS in the other PFL(s), or (3), depending on UE implementation, the UE may perform positioning measurement based on one or more of the PRS resources in the remaining aggregated PFL(s). This behavior is the same whether the UE is in RRC inactive stage or RRC connected state. QC2308886WO Qualcomm Ref.
  • location server-based positioning e.g., LPP-based positioning
  • FIG. 11 illustrates various example graphs showing the effect of different gaps between aggregated PRS resources, according to aspects of the disclosure. As shown in FIG.11, t he larger the gap ( ), the more peaks in the channel estimate, and therefore, the more difficult for the UE to determine the ToA of the channel.
  • the present disclosure provides techniques to handle PRS aggregation in scenarios where one or more PFLs are dropped. More specifically, the present disclosure provides techniques for performing PRS aggregation based on the effective gap length across the aggregated PFLs when one or more PFLs are dropped. [0159] In an aspect, if the effective gap length is less than “X” resource blocks, then the UE is expected to perform PRS aggregation across the remaining PFLs and report the aggregated result(s) (e.g., in an LPP Provide Location Information message or an SLPP Provide Location Information message). The value of X may be a percentage of a remaining (non-dropped) PFL or a percentage of the combined remaining PFL(s).
  • X may be 5%, 10%, 15%, or the like.
  • the value of X may be configured to the UE (e.g., in an LPP Provide Assistance Data message, an LPP Request Location Information message, an SLPP Provide Assistance Data message, or an SLPP Request Location Information message) or specified in the applicable wireless communications standard.
  • the UE is expected to perform an report (e.g., in an LPP Provide Location Information message or an SLPP Provide Location Information message) individual measurements of the PRS resources in the remaining PFL(s).
  • the UE may report the individual PRS measurement results using PFL indicators.
  • the UE may separately measure the PRS resource(s) in each remaining PFL and report the resulting measurement(s) along with a PFL indicator/identifier of the PFL in which the measurement(s) were obtained.
  • the UE may report only the best PFL measurement(s), using PFL QC2308886WO Qualcomm Ref. No.2308886WO 50 indicator(s). That is, the UE may separately measure the PRS resource(s) in each remaining PFL and report the best PRS measurement (e.g., the PRS measurement with the lowest uncertainty) along with an identifier of the PFL in which the measurement was obtained.
  • the UE may report an average measurement of the PRS resources measured in each of the multiple remaining PFLs.
  • the UE may report the PRS measurement(s) of the PRS resource(s) in the PFL having the maximum bandwidth, along with a PFL indicator of the measured PFL.
  • the UE may report the PRS measurement(s) corresponding to the highest priority PFL, along with a PFL indicator of the measured PFL.
  • the UE may report the PRS measurement(s) corresponding to the PFL of the UE’s serving cell, along with a PFL indicator of the measured PFL.
  • the UE may report the PRS measurement(s) corresponding to the PFL having the maximum number for PRS resources and/or PRS resource sets and/or TRPs.
  • the UE may also report a PFL indicator for the measured PFL.
  • the UE may report the PRS measurement(s) corresponding to the PFL having the maximum number of detected PRS resources and/or PRS resource sets and/or TRPs.
  • FIGS.12A and 12B illustrate various examples of aggregated PFLs that may be dropped, according to aspects of the disclosure.
  • a UE is configured to measure (e.g., in an LPP Provide Assistance Data message, an LPP Request Location Information message, an SLPP Provide Assistance Data message, or an SLPP Request Location Information message) PRS in each of three PFLs (labeled “PFL1,” “PFL2,” and “PFL3”).
  • PRS resource(s)/PRS resource set(s) may be transmitted by the same UE/TRP or different UEs/TRPs.
  • PFL1 is dropped, but because the remaining PFLs (PFL2 and PFL3) are adjacent to each other, the effective gap between them is likely less than X.
  • the UE is expected to perform bandwidth aggregation of the PRS resources in PFL2 and PFL3.
  • QC2308886WO Qualcomm Ref. No.2308886WO 51 When reporting the PRS measurements, the UE should indicate which PFLs were measured/aggregated.
  • FIG. 13 illustrates an example method 1300 of wireless communication, according to aspects of the disclosure.
  • method 1300 may be performed by a UE (e.g., any of the UEs described herein).
  • the UE receives a configuration (e.g., in an LPP Provide Assistance Data message, an LPP Request Location Information message, an SLPP Provide Assistance Data message, or an SLPP Request Location Information message) to perform bandwidth aggregation of one or more PRS resources transmitted in two or more PFLs.
  • a configuration e.g., in an LPP Provide Assistance Data message, an LPP Request Location Information message, an SLPP Provide Assistance Data message, or an SLPP Request Location Information message
  • operation 1310 may be performed by the one or more WWAN transceivers 310, the one or more short-range wireless transceivers 320, the one or more processors 342, memory 340, and/or positioning component 348, any or all of which may be considered means for performing this operation.
  • the UE obtains one or more individual positioning measurements of each of the one or more PRS resources based on an effective frequency domain gap between the one or more PRS resources being greater than or equal to a threshold.
  • operation 1320 may be performed by the one or more WWAN transceivers 310, the one or more short-range wireless transceivers 320, the one or more processors 342, memory 340, and/or positioning component 348, any or all of which may be considered means for performing this operation.
  • the UE transmits a measurement report (e.g., an LPP Provide Location Information message or an SLPP Provide Location Information message) for the one or more PRS resources.
  • a measurement report e.g., an LPP Provide Location Information message or an SLPP Provide Location Information message
  • operation 1330 may be performed by the one or more WWAN transceivers 310, the one or more short-range wireless transceivers 320, the one or more processors 342, memory 340, and/or positioning component 348, any or all of which may be considered means for performing this operation.
  • QC2308886WO Qualcomm Ref. No.2308886WO 52 [0169]
  • a technical advantage of the method 1300 is enabling the UE to opportunistically perform PRS resource aggregation, thereby improving measurement and positioning performance.
  • each clause should hereby be deemed to be incorporated in the description, wherein each clause by itself can stand as a separate example.
  • each dependent clause can refer in the clauses to a specific combination with one of the other clauses, the aspect(s) of that dependent clause are not limited to the specific combination. It will be appreciated that other example clauses can also include a combination of the dependent clause aspect(s) with the subject matter of any other dependent clause or independent clause or a combination of any feature with other dependent and independent clauses.
  • a method of wireless communication performed by a user equipment comprising: receiving a configuration to perform bandwidth aggregation of one or more positioning reference signal (PRS) resources transmitted in two or more positioning frequency layers (PFLs); obtaining one or more individual positioning measurements of each of the one or more PRS resources based on an effective frequency domain gap between the one or more PRS resources being greater than or equal to a threshold; and transmitting a measurement report for the one or more PRS resources.
  • PRS positioning reference signal
  • PFLs positioning frequency layers
  • the measurement report includes: the one or more individual positioning measurements of a PRS resource of the one or more PRS resources that are better than the one or more individual positioning measurements of remaining PRS resources of the one or more PRS resources, and an identifier of a PFL of the two or more PFLs corresponding to the PRS resource.
  • the measurement report includes: an average of the one or more individual positioning measurements of each of the one or more PRS resources.
  • the measurement report includes: the one or more individual positioning measurements of a PRS resource of the one or more PRS resources corresponding to a PFL of the two or more PFLs having a maximum bandwidth among the two or more PFLs, and an identifier of the PFL.
  • the measurement report includes: the one or more individual positioning measurements of a PRS resource of the one or more PRS resources corresponding to a PFL of the two or more PFLs having a highest priority among the two or more PFLs, and an identifier of the PFL.
  • the measurement report includes: the one or more individual positioning measurements of a PRS resource of the one or more PRS resources corresponding to a PFL of the two or more PFLs of a serving cell of the UE, and an identifier of the PFL.
  • the measurement report includes: the one or more individual positioning measurements of a PRS resource of the one or more PRS resources corresponding to a PFL of the two or more PFLs having a maximum number of transmitted PRS resources, PRS resource sets, transmission-reception points (TRPs), or any combination thereof among the two or more PFLs, and an identifier of the PFL.
  • TRPs transmission-reception points
  • the measurement report includes: the one or more individual positioning measurements of a PRS resource of the one or more PRS resources corresponding to a PFL of the two or more PFLs having a maximum number of detected PRS resources, PRS resource sets, transmission-reception points (TRPs), or any combination thereof among the two or more PFLs, and an identifier of the PFL.
  • TRPs transmission-reception points
  • Clause 10 The method of any of clauses 1 to 9, wherein: the two or more PFLs comprise three PFLs, the one or more PRS resources are not measured in a middle PFL of the three PFLs, and the effective frequency domain gap comprises the middle PFL.
  • Clause 11 The method of clause 10, wherein the one or more PRS resources are not measured in the middle PFL based on the one or more PRS resources colliding with another signal.
  • Clause 12. The method of any of clauses 1 to 11, wherein the effective frequency domain gap comprises one or more resource blocks.
  • Clause 13 The method of any of clauses 1 to 12, wherein the threshold is based on: a percentage of one of the two or more PFLs occupied by the one or more PRS resources, or a combined percentage of the two or more PFLs occupied by the one or more PRS resources.
  • Clause 14 The method of any of clauses 1 to 13, wherein: the configuration is received from a location server, and the measurement report is transmitted to the location server.
  • a user equipment comprising: one or more memories; one or more transceivers; and one or more processors communicatively coupled to the one or more memories and the one or more transceivers, the one or more processors, either alone or in combination, configured to: receive, via the one or more transceivers, a configuration to perform bandwidth aggregation of one or more positioning reference signal (PRS) resources transmitted in two or more positioning frequency layers (PFLs); obtain one or more individual positioning measurements of each of the one or more PRS resources based on an effective frequency domain gap between the one or more PRS resources being greater than or equal to a threshold; and transmit, via the one or more transceivers, a measurement report for the one or more PRS resources.
  • PRS positioning reference signal
  • the measurement report includes: the one or more individual positioning measurements of each of the one or more PRS resources, and identifiers of the two or more PFLs.
  • Clause 18 The UE of any of clauses 16 to 17, wherein the measurement report includes: the one or more individual positioning measurements of a PRS resource of the one or more PRS resources that are better than the one or more individual positioning QC2308886WO Qualcomm Ref. No.2308886WO 55 measurements of remaining PRS resources of the one or more PRS resources, and an identifier of a PFL of the two or more PFLs corresponding to the PRS resource.
  • the measurement report includes: an average of the one or more individual positioning measurements of each of the one or more PRS resources.
  • Clause 20 The UE of any of clauses 16 to 19, wherein the measurement report includes: the one or more individual positioning measurements of a PRS resource of the one or more PRS resources corresponding to a PFL of the two or more PFLs having a maximum bandwidth among the two or more PFLs, and an identifier of the PFL.
  • Clause 21 Clause 21.
  • the measurement report includes: the one or more individual positioning measurements of a PRS resource of the one or more PRS resources corresponding to a PFL of the two or more PFLs having a highest priority among the two or more PFLs, and an identifier of the PFL.
  • Clause 22 The UE of any of clauses 16 to 21, wherein the measurement report includes: the one or more individual positioning measurements of a PRS resource of the one or more PRS resources corresponding to a PFL of the two or more PFLs of a serving cell of the UE, and an identifier of the PFL.
  • the measurement report includes: the one or more individual positioning measurements of a PRS resource of the one or more PRS resources corresponding to a PFL of the two or more PFLs having a maximum number of transmitted PRS resources, PRS resource sets, transmission-reception points (TRPs), or any combination thereof among the two or more PFLs, and an identifier of the PFL.
  • TRPs transmission-reception points
  • the measurement report includes: the one or more individual positioning measurements of a PRS resource of the one or more PRS resources corresponding to a PFL of the two or more PFLs having a maximum number of detected PRS resources, PRS resource sets, transmission-reception points (TRPs), or any combination thereof among the two or more PFLs, and an identifier of the PFL.
  • the two or more PFLs comprise three PFLs
  • the one or more PRS resources are not measured in a middle PFL of the three PFLs
  • the effective frequency domain gap comprises the middle PFL.
  • Clause 26 The UE of clause 25, wherein the one or more PRS resources are not measured in the middle PFL based on the one or more PRS resources colliding with another signal.
  • Clause 27 The UE of any of clauses 16 to 26, wherein the effective frequency domain gap comprises one or more resource blocks.
  • Clause 28 The UE of any of clauses 16 to 27, wherein the threshold is based on: a percentage of one of the two or more PFLs occupied by the one or more PRS resources, or a combined percentage of the two or more PFLs occupied by the one or more PRS resources.
  • a user equipment comprising: means for receiving a configuration to perform bandwidth aggregation of one or more positioning reference signal (PRS) resources transmitted in two or more positioning frequency layers (PFLs); means for obtaining one or more individual positioning measurements of each of the one or more PRS resources based on an effective frequency domain gap between the one or more PRS resources being greater than or equal to a threshold; and means for transmitting a measurement report for the one or more PRS resources.
  • PRS positioning reference signal
  • PFLs positioning frequency layers
  • the measurement report includes: the one or more individual positioning measurements of a PRS resource of the one or more PRS resources that are better than the one or more individual positioning measurements of remaining PRS resources of the one or more PRS resources, and an identifier of a PFL of the two or more PFLs corresponding to the PRS resource.
  • the measurement report includes: an average of the one or more individual positioning measurements of each of the one or more PRS resources.
  • the measurement report includes: the one or more individual positioning measurements of a PRS resource of the one or QC2308886WO Qualcomm Ref. No.2308886WO 57 more PRS resources corresponding to a PFL of the two or more PFLs having a maximum bandwidth among the two or more PFLs, and an identifier of the PFL.
  • Clause 36 The UE of any of clauses 31 to 35, wherein the measurement report includes: the one or more individual positioning measurements of a PRS resource of the one or more PRS resources corresponding to a PFL of the two or more PFLs having a highest priority among the two or more PFLs, and an identifier of the PFL.
  • the measurement report includes: the one or more individual positioning measurements of a PRS resource of the one or more PRS resources corresponding to a PFL of the two or more PFLs of a serving cell of the UE, and an identifier of the PFL.
  • the measurement report includes: the one or more individual positioning measurements of a PRS resource of the one or more PRS resources corresponding to a PFL of the two or more PFLs having a maximum number of transmitted PRS resources, PRS resource sets, transmission-reception points (TRPs), or any combination thereof among the two or more PFLs, and an identifier of the PFL.
  • Clause 42 The UE of any of clauses 31 to 41, wherein the effective frequency domain gap comprises one or more resource blocks.
  • Clause 43 The UE of any of clauses 31 to 42, wherein the threshold is based on: a percentage of one of the two or more PFLs occupied by the one or more PRS resources, QC2308886WO Qualcomm Ref. No.2308886WO 58 or a combined percentage of the two or more PFLs occupied by the one or more PRS resources.
  • a non-transitory computer-readable medium storing computer-executable instructions that, when executed by a user equipment (UE), cause the UE to: receive a configuration to perform bandwidth aggregation of one or more positioning reference signal (PRS) resources transmitted in two or more positioning frequency layers (PFLs); obtain one or more individual positioning measurements of each of the one or more PRS resources based on an effective frequency domain gap between the one or more PRS resources being greater than or equal to a threshold; and transmit a measurement report for the one or more PRS resources.
  • PRS positioning reference signal
  • PFLs positioning frequency layers
  • Clause 48 The non-transitory computer-readable medium of any of clauses 46 to 47, wherein the measurement report includes: the one or more individual positioning measurements of a PRS resource of the one or more PRS resources that are better than the one or more individual positioning measurements of remaining PRS resources of the one or more PRS resources, and an identifier of a PFL of the two or more PFLs corresponding to the PRS resource.
  • Clause 49 The non-transitory computer-readable medium of any of clauses 46 to 48, wherein the measurement report includes: an average of the one or more individual positioning measurements of each of the one or more PRS resources.
  • the measurement report includes: the one or more individual positioning measurements of a PRS resource of the one or more PRS resources corresponding to a PFL of the two or more PFLs having a maximum bandwidth among the two or more PFLs, and an identifier of the PFL.
  • the measurement report includes: the one or more individual positioning measurements of a PRS resource of the one or more PRS resources corresponding to a PFL of the two or more PFLs having a maximum bandwidth among the two or more PFLs, and an identifier of the PFL.
  • the measurement report includes: the one or more individual positioning measurements of a PRS resource of the one or more PRS resources corresponding to a PFL of the two or more PFLs of a serving cell of the UE, and an identifier of the PFL.
  • the measurement report includes: the one or more individual positioning measurements of a PRS resource of the one or more PRS resources corresponding to a PFL of the two or more PFLs having a maximum number of transmitted PRS resources, PRS resource sets, transmission-reception points (TRPs), or any combination thereof among the two or more PFLs, and an identifier of the PFL.
  • TRPs transmission-reception points
  • the non-transitory computer-readable medium of any of clauses 46 to 53 wherein the measurement report includes: the one or more individual positioning measurements of a PRS resource of the one or more PRS resources corresponding to a PFL of the two or more PFLs having a maximum number of detected PRS resources, PRS resource sets, transmission-reception points (TRPs), or any combination thereof among the two or more PFLs, and an identifier of the PFL.
  • the two or more PFLs comprise three PFLs
  • the one or more PRS resources are not measured in a middle PFL of the three PFLs
  • the effective frequency domain gap comprises the middle PFL.
  • Clause 56 The non-transitory computer-readable medium of clause 55, wherein the one or more PRS resources are not measured in the middle PFL based on the one or more PRS resources colliding with another signal.
  • Clause 57 The non-transitory computer-readable medium of any of clauses 46 to 56, wherein the effective frequency domain gap comprises one or more resource blocks.
  • Clause 58 The non-transitory computer-readable medium of any of clauses 46 to 57, wherein the threshold is based on: a percentage of one of the two or more PFLs occupied QC2308886WO Qualcomm Ref.
  • data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the above description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
  • various illustrative logical blocks, modules, circuits, and algorithm steps described in connection with the aspects disclosed herein may be implemented as electronic hardware, computer software, or combinations of both.
  • various illustrative components, blocks, modules, circuits, and steps have been described above generally in terms of their functionality. Whether such functionality is implemented as hardware or software depends upon the particular application and design constraints imposed on the overall system.
  • a processor may also be implemented as a combination of computing devices, for example, a combination of a DSP and a microprocessor, a plurality of microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.
  • the methods, sequences and/or algorithms described in connection with the aspects disclosed herein may be embodied directly in hardware, in a software module executed by a processor, or in a combination of the two.
  • a 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 disk, a removable disk, a CD-ROM, or any other form of storage medium known in the art.
  • An example storage medium is coupled to the processor such that the processor can read information from, and write information to, the storage medium.
  • the storage medium may be integral to the processor.
  • the processor and the storage medium may reside in an ASIC.
  • the ASIC may reside in a user terminal (e.g., UE).
  • the processor and the storage medium may reside as discrete components in a user terminal.
  • the functions described may be implemented in hardware, software, firmware, or any combination thereof. If implemented in software, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium.
  • Computer-readable media includes both computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
  • a storage media may be any available media that can be accessed by a computer.
  • such computer-readable media can comprise RAM, ROM, EEPROM, CD-ROM or other optical disk storage, magnetic 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 that can be accessed by a computer.
  • any connection is properly termed a computer-readable medium.
  • the software is transmitted from a website, server, or other remote source using a coaxial cable, fiber optic cable, twisted pair, digital subscriber line (DSL), or wireless technologies such as infrared, radio, and microwave
  • the coaxial cable, fiber optic cable, twisted pair, DSL, or wireless technologies such as infrared, radio, and microwave are included in the definition QC2308886WO Qualcomm Ref. No.2308886WO 62 of medium.
  • Disk and disc includes compact disc (CD), laser disc, optical disc, digital versatile disc (DVD), floppy disk and Blu-ray disc where disks usually reproduce data magnetically, while discs reproduce data optically with lasers.
  • the terms “has,” “have,” “having,” “comprises,” “comprising,” “includes,” “including,” and the like does not preclude the presence of one or more additional elements (e.g., an element “having” A may also have B).
  • the phrase “based on” is intended to mean “based, at least in part, on” unless explicitly stated otherwise.
  • the term “or” is intended to be inclusive when used in a series and may be used interchangeably with “and/or,” unless explicitly stated otherwise (e.g., if used in combination with “either” or “only one of”) or the alternatives are mutually exclusive (e.g., “one or more” should not be interpreted as “one and more”).

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  • Engineering & Computer Science (AREA)
  • Signal Processing (AREA)
  • Computer Networks & Wireless Communication (AREA)
  • Mobile Radio Communication Systems (AREA)

Abstract

La présente invention divulgue des techniques pour des communications sans fil. Selon un aspect, un équipement d'utilisateur (UE) reçoit une configuration pour réaliser un regroupement de bandes passantes d'une ou de plusieurs ressources de signaux de référence de positionnement (PRS) transmises dans au moins deux couches de fréquence de positionnement (PFL), obtient une ou plusieurs mesures de positionnement individuelles de chacune de la ou des ressources PRS sur la base du fait qu'un intervalle de domaine fréquentiel effectif entre la ou les ressources PRS est supérieur ou égal à un seuil, et transmet un rapport de mesure pour la ou les ressources PRS.
PCT/US2025/017411 2024-03-01 2025-02-26 Gestion d'équipements d'utilisateur (ue) de couches de fréquence de positionnement abandonnées pour positionner un regroupement de signaux de référence Pending WO2025184223A1 (fr)

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Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210185632A1 (en) * 2019-12-16 2021-06-17 Qualcomm Incorporated Signaling details for prs stitching for positioning in a wireless network

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20210185632A1 (en) * 2019-12-16 2021-06-17 Qualcomm Incorporated Signaling details for prs stitching for positioning in a wireless network

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
JUERGEN HOFMANN ET AL: "RRM requirements for PRS/SRS Bandwidth Aggregation in NR Positioning", vol. RAN WG4, no. Xiamen, CN; 20231009 - 20231013, 27 September 2023 (2023-09-27), XP052525157, Retrieved from the Internet <URL:https://www.3gpp.org/ftp/TSG_RAN/WG4_Radio/TSGR4_108bis/Docs/R4-2316753.zip R4-2316753 RRM Requirements for PRS SRS BW Aggregation.docx> [retrieved on 20230927] *
MODERATOR (ZTE): "Summary #3 for PRS and SRS BW aggregation", vol. 3GPP RAN 1, no. e-Meeting; 20230417 - 20230426, 26 April 2023 (2023-04-26), XP052368681, Retrieved from the Internet <URL:https://ftp.3gpp.org/tsg_ran/WG1_RL1/TSGR1_112b-e/Inbox/R1-2304083.zip R1-2304083 Summary #3 for PRS and SRS BW aggregation.docx> [retrieved on 20230426] *

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