WO2024093265A1 - Positionnement impliqué dans un équipement utilisateur serveur - Google Patents

Positionnement impliqué dans un équipement utilisateur serveur Download PDF

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Publication number
WO2024093265A1
WO2024093265A1 PCT/CN2023/101698 CN2023101698W WO2024093265A1 WO 2024093265 A1 WO2024093265 A1 WO 2024093265A1 CN 2023101698 W CN2023101698 W CN 2023101698W WO 2024093265 A1 WO2024093265 A1 WO 2024093265A1
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WIPO (PCT)
Prior art keywords
server
anchor
ues
information
target
Prior art date
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PCT/CN2023/101698
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English (en)
Inventor
Luning Liu
Jing HAN
Haiming Wang
Jie Hu
Lihua Yang
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Lenovo (Beijing) Limited
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.)
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Priority to PCT/CN2023/101698 priority Critical patent/WO2024093265A1/fr
Publication of WO2024093265A1 publication Critical patent/WO2024093265A1/fr

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Classifications

    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices

Definitions

  • the present disclosure relates to wireless communications, and more specifically to positioning of a terminal device.
  • a wireless communications system may include one or multiple network communication devices, such as base stations, which may be otherwise known as an eNodeB (eNB) , a next-generation NodeB (gNB) , or other suitable terminology.
  • Each network communication devices such as a base station may support wireless communications for one or multiple user communication devices, which may be otherwise known as user equipment (UE) , or other suitable terminology.
  • the wireless communications system may support wireless communications with one or multiple user communication devices by utilizing resources of the wireless communication system (e.g., time resources (e.g., symbols, slots, subframes, frames, or the like) or frequency resources (e.g., subcarriers, carriers) .
  • the wireless communications system may support wireless communications across various radio access technologies including third generation (3G) radio access technology, fourth generation (4G) radio access technology, fifth generation (5G) radio access technology, among other suitable radio access technologies beyond 5G (e.g., sixth generation (6G) ) .
  • 3G third generation
  • 4G fourth generation
  • 5G fifth generation
  • 6G sixth generation
  • a UE-based positioning mode is a mode in which a target UE computes its position estimate, and can be used for downlink positioning methods in which the target UE measures positioning reference signals (PRSs) transmitted from transmission-reception points (TRPs) .
  • PRSs positioning reference signals
  • TRPs transmission-reception points
  • RAN2 introduces the concept of a sidelink (SL) positioning server UE for SL positioning, which can be used for location calculation of a target UE.
  • SL sidelink
  • the present disclosure relates to methods, apparatuses, and systems that support server UE-involved positioning of a target UE.
  • a terminal device determines, for a positioning procedure in which the terminal device is a target UE, a server UE from a set of candidate server UEs or at least one anchor UE from a set of candidate anchor UEs.
  • the target UE transmits, to the server UE, a request for anchor UE information indicative of at least one anchor UE among the set of candidate anchor UEs.
  • the server UE selects at least one anchor UE from the set of candidate anchor UEs and transmits, to the target UE, the anchor UE information indicative of the at least one anchor UE.
  • the target UE transmits, to the set of candidate server UEs, a request for link quality information indicative of link qualities between the set of candidate server UEs and the at least one anchor UE.
  • the candidate server UE determines at least one link quality between the candidate server UE and the at least one anchor UE and transmits, to the target UE, the link quality information indicative of the at least one link quality.
  • the anchor UE may be selected by the server UE.
  • the server UE may be selected based on its link quality with the anchor UE. Either option may guarantee the communication between the anchor UE and the server UE, which reduces signaling overhead and latency in the positioning procedure of the target UE. Thus, the communication reliability and efficiency in the positioning procedure of the target UE may be improved.
  • the request for the anchor UE information may comprise at least one of the following: an indication of a role of the server UE in the positioning procedure; an indication of operations to be performed by the server UE; information of the set of candidate anchor UEs; or a quality of service (QoS) requirement associated with the positioning procedure.
  • QoS quality of service
  • the operations may comprise at least one of the following: an anchor UE selection; an operation of providing the target UE or at least one anchor UE with a configuration for a sidelink positioning reference signal (SL-PRS) for the positioning procedure; an operation of providing at least one anchor UE or the target UE with a configuration for a SL-PRS measurement; an operation of providing at least one anchor UE or the target UE with a configuration for a SL-PRS measurement report; or a location calculation of the target UE.
  • SL-PRS sidelink positioning reference signal
  • the information of the set of candidate anchor UEs may comprise at least one of the following: identities of candidate anchor UEs in the set of candidate anchor UEs; an indication of a role of candidate anchor UEs in the set of candidate anchor UEs in the positioning procedure; or capabilities of candidate anchor UEs in the set of candidate anchor UEs for the positioning procedure.
  • the anchor UE information may comprise: at least one identity of the at least one anchor UE.
  • the request for the link quality information may comprise: information of the at least one anchor UE; and a requirement indication for the link quality information.
  • the information of the at least one anchor UE may comprise: at least one identity of the at least one anchor UE; and an indication of a role of the at least one anchor UE in the positioning procedure.
  • the link quality information may comprise: an indication of a sidelink discovery-reference signal received power (SD-RSRP) between the set of candidate server UEs and the at least one anchor UE.
  • SD-RSRP sidelink discovery-reference signal received power
  • Some implementations of the method and apparatuses described herein may further include: determining a server UE from the set of candidate server UEs based on the link quality information in the case that the at least one anchor UE is determined; and transmitting, to the server UE, an indication of a role of the server UE in the positioning procedure.
  • Some implementations of the method and apparatuses described herein may further include: in the case that the at least one anchor UE is determined, receiving, from a network device, a request for server UE information; determining a server UE from the set of candidate server UEs based on the link quality information and the request for the server UE information; and transmitting, to the network device, the server UE information.
  • the request for the server UE information may comprise: at least one selection criterion for selecting the server UE from the set of candidate server UEs.
  • the at least one selection criterion may comprise at least one of the following: a computing ability criterion; a positioning method criterion; a network coverage criterion; or a link quality criterion.
  • the server UE information may comprise: an identity of the server UE.
  • Some implementations of the method and apparatuses described herein may further include: transmitting, to the at least one anchor UE, information of the server UE.
  • the information of the server UE may comprise: an identity of the server UE; and an indication of a role of the server UE in the positioning procedure.
  • Some implementations of the method and apparatuses described herein may further include: in the case that the at least one anchor UE is determined, receiving, from a network device, a request for candidate server UE information; determining information of the set of candidate server UEs and the link quality information based on the request for the candidate server UE information; and transmitting, to the network device, the candidate server UE information comprising the information of the set of candidate server UEs and the link quality information.
  • the information of the set of candidate server UEs may comprise at least one of the following: identities of candidate server UEs in the set of candidate server UEs; computing abilities of candidate server UEs in the set of candidate server UEs; supported positioning methods of candidate server UEs in the set of candidate server UEs; or network coverage information associated with candidate server UEs in the set of candidate server UEs.
  • Some implementations of the method and apparatuses described herein may further include: receiving, from a server UE selected from the set of candidate server UEs or from a network device, first assistance data for the positioning procedure.
  • the first assistance data may comprise at least one of the following: information of the server UE; a configuration for a sidelink positioning reference signal (SL-PRS) for the positioning procedure; a configuration for a SL-PRS measurement; or a configuration for a SL-PRS measurement report.
  • SL-PRS sidelink positioning reference signal
  • the information of the server UE may comprise at least one of the following: an identity of the server UE; an indication of a role of the server UE in the positioning procedure; or an indication of operations to be performed by the server UE.
  • the configuration for the SL-PRS measurement report may comprise at least one of the following: an indication of a report mode; or an indication of a response time for the SL-PRS measurement report.
  • the first assistance data is received via a broadcast signaling or a dedicated signaling.
  • a terminal device receives, from a target user equipment (UE) in a positioning procedure, a request for anchor UE information associated with a set of candidate anchor UEs for the positioning procedure or a request for link quality information associated with at least one anchor UE for the positioning procedure.
  • the terminal device selects at least one anchor UE from the set of candidate anchor UEs; and transmits, to the target UE, the anchor UE information indicative of the at least one anchor UE.
  • the terminal device determines at least one link quality between the terminal device and the at least one anchor UE; and transmits, to the target UE, the link quality information indicative of the at least one link quality.
  • Either option may guarantee the communication between the anchor UE and the server UE, which reduces signaling overhead and latency in the positioning procedure of the target UE.
  • the communication reliability and efficiency in the positioning procedure of the target UE may be improved.
  • the request for the anchor UE information may comprise at least one of the following: an indication of a role of the terminal device as a server UE in the positioning procedure; an indication of operations to be performed by the server UE; information of the set of candidate anchor UEs; or a quality of service (QoS) requirement associated with the positioning procedure.
  • QoS quality of service
  • the operations may comprise at least one of the following: an anchor UE selection; an operation of providing the target UE or at least one anchor UE with a configuration for a sidelink positioning reference signal (SL-PRS) for the positioning procedure; an operation of providing at least one anchor UE or the target UE with a configuration for a SL-PRS measurement; an operation of providing at least one anchor UE or the target UE with a configuration for a SL-PRS measurement report; or a location calculation of the target UE.
  • SL-PRS sidelink positioning reference signal
  • the information of the set of candidate anchor UEs may comprise at least one of the following: identities of candidate anchor UEs in the set of candidate anchor UEs; an indication of a role of candidate anchor UEs in the set of candidate anchor UEs in the positioning procedure; or capabilities of candidate anchor UEs in the set of candidate anchor UEs for the positioning procedure.
  • selecting the at least one anchor UE may comprise: discovering candidate anchor UEs among the set of candidate anchor UEs; determining link qualities between the terminal device and the discovered candidate anchor UEs; and determining the at least one anchor UE from the discovered candidate anchor UEs based on the link qualities and the QoS requirement.
  • the anchor UE information may comprise: at least one identity of the at least one anchor UE.
  • the request for the link quality information may comprise: information of the at least one anchor UE; and a requirement indication for the link quality information.
  • the information of the at least one anchor UE may comprise: at least one identity of the at least one anchor UE; and an indication of a role of the at least one anchor UE in the positioning procedure.
  • the link quality information may comprise: an indication of a sidelink discovery-reference signal received power (SD-RSRP) between the terminal device and the at least one anchor UE.
  • SD-RSRP sidelink discovery-reference signal received power
  • Some implementations of the method and apparatuses described herein may further include: after transmitting the link quality information to the target UE, receiving, from the target UE or from a network device, an indication of a role of the terminal device as a server UE in the positioning procedure.
  • Some implementations of the method and apparatuses described herein may further include: in the case that the terminal device is a server UE for the positioning procedure, receiving, from a network device, second assistance data for the positioning procedure.
  • the second assistance data may comprise at least one of the following: an indication of a role of the server UE in the positioning procedure; an indication of operations to be performed by the server UE; or information associated with the operations to be performed by the server UE.
  • the information associated with the operations to be performed by the server UE may comprise at least one of the following: a positioning method for the positioning procedure; an identity of a terminal device transmitting a sidelink positioning reference signal (SL-PRS) for the positioning procedure; an identity of a terminal device measuring the SL-PRS; location information of the at least one anchor UE; at least one location accuracy of the at least one anchor UE; a QoS requirement associated with the positioning procedure; a configuration for the SL-PRS; a configuration for a SL-PRS measurement; or a configuration for a SL-PRS measurement report.
  • SL-PRS sidelink positioning reference signal
  • Some implementations of the method and apparatuses described herein may further include: in the case that the terminal device is a server UE for the positioning procedure, transmitting first assistance data to the target UE or the at least one anchor UE.
  • the first assistance data may comprise at least one of the following: information of the server UE; a configuration for a sidelink positioning reference signal (SL-PRS) for the positioning procedure; a configuration for a SL-PRS measurement; or a configuration for a SL-PRS measurement report.
  • SL-PRS sidelink positioning reference signal
  • the information of the server UE may comprise at least one of the following: an identity of the server UE; an indication of a role of the server UE in the positioning procedure; or an indication of operations to be performed by the server UE.
  • the first assistance data is transmitted via a broadcast signaling or a dedicated signaling.
  • Some implementations of the method and apparatuses described herein may further include: in the case that the terminal device is a server UE for the positioning procedure, receiving, from a network device, a request for a location calculation result of the target UE; transmitting, to the target UE or to the at least one anchor UE, a request for location measurement data associated with the target UE; receiving, from the target UE or from the at least one anchor UE, the location measurement data; performing a location calculation of the target UE based on the location measurement data and the request for the location calculation result to obtain the location calculation result of the target UE; and transmitting, to the network device, information associated with the location calculation result.
  • the information associated with the location calculation result may comprise at least one of the following: the location calculation result; or an indication that the location calculation result does not satisfy a QoS requirement associated with the positioning procedure.
  • the request for the location calculation result may comprise at least one of the following: a configuration for a SL-PRS measurement; an indication of a report mode of the location calculation result; or an indication of a response time for the location calculation result.
  • the information associated with the location calculation result is transmitted via a ProvideLocationInformation message before the response time expires.
  • the request for the location calculation result is received via a RequestLocationInformation message.
  • the request for the location measurement data is determined by the terminal device or based on the request for the location calculation result, and the request for the location measurement data may comprise at least one of the following: a configuration for a SL-PRS measurement; an indication of a report mode of the location measurement data; or an indication of a response time for the location measurement data.
  • the request for the location calculation result may further comprise a QoS requirement
  • the processor is further configured to: evaluate whether the location calculation result satisfies the QoS requirement; and obtain the information associated with the location calculation result based on the evaluation, wherein the information associated with the location calculation result may comprise the location calculation result in the case that the location calculation result satisfies the QoS requirement, and wherein the information associated with the location calculation result may comprise an indication that the location calculation result does not satisfy the QoS requirement in the case that the location calculation result does not satisfy the QoS requirement.
  • a network device determines that a server user equipment (UE) is to be determined for a positioning procedure of a target UE; determines the server UE for the positioning procedure; transmits, to the server UE, a request for a location calculation result of the target UE; and receives, from the server UE, information associated with the location calculation result.
  • UE server user equipment
  • Some implementations of the method and apparatuses described herein may further include: transmitting, to the target UE, a request for server UE information; and receive, from the target UE, the server UE information, wherein the server UE is determined based on the server UE information.
  • the request for the server UE information may comprise: at least one selection criterion for selecting the server UE.
  • the at least one selection criterion may comprise at least one of the following: a computing ability criterion; a positioning method criterion; a network coverage criterion; or a link quality criterion.
  • the server UE information may comprise: an identity of the server UE.
  • Some implementations of the method and apparatuses described herein may further include: transmitting, to the target UE, a request for candidate server UE information comprising information of a set of candidate server UEs and link quality information indicating link qualities between the set of candidate server UEs and at least one anchor UE for the positioning procedure; and receiving, from the target UE, the candidate server UE information, wherein the server UE is determined from the set of candidate server UEs based on the information of the set of candidate server UEs and the link quality information.
  • the information of the set of candidate server UEs may comprise at least one of the following: identities of candidate server UEs in the set of candidate server UEs; computing abilities of candidate server UEs in the set of candidate server UEs; supported positioning methods of candidate server UEs in the set of candidate server UEs; or network coverage information associated with candidate server UEs in the set of candidate server UEs.
  • Some implementations of the method and apparatuses described herein may further include: transmitting, to the server UE, second assistance data for the positioning procedure.
  • the second assistance data may comprise at least one of the following: an indication of a role of the server UE in the positioning procedure; an indication of operations to be performed by the server UE; or information associated with the operations to be performed by the server UE.
  • the information associated with the operations to be performed by the server UE may comprise at least one of the following: a positioning method for the positioning procedure; an identity of a terminal device transmitting a sidelink positioning reference signal (SL-PRS) for the positioning procedure; an identity of a terminal device measuring the SL-PRS; location information of at least one anchor UE in the positioning procedure; at least one location accuracy of the at least one anchor UE; a QoS requirement associated with the positioning procedure; a configuration for the SL-PRS; a configuration for a SL-PRS measurement; or a configuration for a SL-PRS measurement report.
  • SL-PRS sidelink positioning reference signal
  • Some implementations of the method and apparatuses described herein may further include: transmitting, to the target UE or to at least one anchor UE for the positioning procedure, first assistance data for the positioning procedure.
  • the first assistance data may comprise at least one of the following: information of the server UE; a configuration for a sidelink positioning reference signal (SL-PRS) for the positioning procedure; a configuration for a SL-PRS measurement; or a configuration for a SL-PRS measurement report.
  • SL-PRS sidelink positioning reference signal
  • the information of the server UE may comprise at least one of the following: an identity of the server UE; an indication of a role of the server UE in the positioning procedure; or an indication of operations to be performed by the server UE.
  • the configuration for the SL-PRS measurement report may comprise at least one of the following: an indication of a report mode; or an indication of a response time for the SL-PRS measurement report.
  • the first assistance data is transmitted via a broadcast signaling or a dedicated signaling.
  • the information associated with the location calculation result may comprise at least one of the following: the location calculation result; or an indication that the location calculation result does not satisfy a QoS requirement associated with the positioning procedure.
  • the request for the location calculation result may comprise at least one of the following: a configuration for a SL-PRS measurement; an indication of a report mode of the location calculation result; or an indication of a response time for the location calculation result.
  • the request for the location calculation result may further comprise a QoS requirement
  • the information associated with the location calculation result may comprise the location calculation result or an indication that the location calculation result does not satisfy the QoS requirement.
  • Some implementations of the method and apparatuses described herein may further include: in the case that the information associated with the location calculation result may comprise the indication that the location calculation result does not satisfy the QoS requirement, one of the following: transmitting, to the server UE, an updated request for the location calculation result of the target UE comprising an updated QoS requirement associated with the positioning procedure; transmitting, to the server UE, an updated request for the location calculation result of the target UE comprising an updated QoS requirement associated with the positioning procedure and an updated configuration for the SL-PRS measurement; transmitting, to at least one of the target UE or at least one anchor UE, an updated configuration for the SL-PRS measurement; terminating the positioning procedure and start a further positioning procedure of the target UE; triggering a reselection of the server UE; or triggering a reselection of at least one anchor UE for the positioning procedure.
  • the information associated with the location calculation result is received via a ProvideLocationInformation message before the response time expires.
  • the request for the location calculation result is transmitted via a RequestLocationInformation message.
  • a terminal device receives first assistance data for a positioning procedure from a network device or a server user equipment (UE) in the positioning procedure, wherein the terminal device is an anchor UE in the positioning procedure; performs a location measurement of a target UE in the positioning procedure to obtain location measurement data associated with the target UE; and transmits the location measurement data to the server UE.
  • the server UE-involved positioning of a target UE may be supported and the communication reliability and efficiency in the positioning procedure of the target UE may be improved.
  • Some implementations of the method and apparatuses described herein may further include: receiving, from the target UE, information of the server UE.
  • the information of the server UE may comprise: an identity of the server UE; and an indication of a role of the server UE in the positioning procedure.
  • the first assistance data may comprise at least one of the following: information of the server UE; a configuration for a sidelink positioning reference signal (SL-PRS) for the location measurement; a configuration for a SL-PRS measurement; or a configuration for a SL-PRS measurement report.
  • SL-PRS sidelink positioning reference signal
  • the information of the server UE may comprise at least one of the following: an identity of the server UE; an indication of a role of the server UE in the positioning procedure; or an indication of operations to be performed by the server UE.
  • the configuration for the SL-PRS measurement report may comprise at least one of the following: an indication of a report mode; or an indication of a response time for the SL-PRS measurement report.
  • the first assistance data is received via a broadcast signaling or a dedicated signaling.
  • FIG. 1A illustrates an example of a wireless communications system that supports positioning of a target UE in accordance with aspects of the present disclosure.
  • FIG. 1B illustrates an example of a wireless communications system that supports positioning of a target UE which is located in-coverage (IC) in accordance with aspects of the present disclosure.
  • FIG. 1C illustrates an example of a wireless communications system that supports positioning of a target UE which is located out-of-coverage (OOC) in accordance with aspects of the present disclosure.
  • OOC out-of-coverage
  • FIGS. 2A through 2F illustrate example signaling charts of a communication process that supports positioning of a target UE in accordance with some example embodiments of the present disclosure.
  • FIG. 3A illustrates an example signaling chart of a communication process that supports an anchor UE selection at a server UE in accordance with some example embodiments of the present disclosure.
  • FIG. 3B illustrates an example signaling chart of a communication process that supports a server UE selection based on link qualities in accordance with some example embodiments of the present disclosure.
  • FIG. 4 illustrates an example signaling chart of a communication process that supports positioning of a target UE involving both a server UE and a location management function (LMF) in accordance with some example embodiments of the present disclosure.
  • LMF location management function
  • FIGS. 5 through 8 illustrate examples of devices that support positioning of a target UE in accordance with aspects of the present disclosure.
  • FIGS. 9 through 12 illustrate examples of processors that support positioning of a target UE in accordance with aspects of the present disclosure.
  • FIGS. 13 through 23 illustrate flowcharts of methods that support positioning of a target UE in accordance with aspects of the present disclosure.
  • references in the present disclosure to “one embodiment, ” “an example embodiment, ” “an embodiment, ” “some embodiments, ” and the like indicate that the embodiment (s) described may include a particular feature, structure, or characteristic, but it is not necessary that every embodiment includes the particular feature, structure, or characteristic. Moreover, such phrases do not necessarily refer to the same embodiment (s) . Further, when a particular feature, structure, or characteristic is described in connection with an embodiment, it is submitted that it is within the knowledge of one skilled in the art to affect such feature, structure, or characteristic in connection with other embodiments whether or not explicitly described.
  • first and second or the like may be used herein to describe various elements, these elements should not be limited by these terms. These terms are only used to distinguish one element from another element. For example, a first element could also be termed as a second element, and similarly, a second element could also be termed as a first element, without departing from the scope of embodiments. As used herein, the term “and/or” includes any and all combinations of one or more of the listed terms.
  • the term “communication network” refers to a network following any suitable communication standards, such as, 5G NR, long term evolution (LTE) , LTE-advanced (LTE-A) , wideband code division multiple access (WCDMA) , high-speed packet access (HSPA) , narrow band internet of things (NB-IoT) , and so on.
  • LTE long term evolution
  • LTE-A LTE-advanced
  • WCDMA wideband code division multiple access
  • HSPA high-speed packet access
  • NB-IoT narrow band internet of things
  • the communications between a terminal device and a network device in the communication network may be performed according to any suitable generation communication protocols, including but not limited to, the first generation (1G) , the second generation (2G) , 2.5G, 2.75G, the third generation (3G) , the fourth generation (4G) , 4.5G, the fifth generation (5G) communication protocols, and/or any other protocols either currently known or to be developed in the future.
  • any suitable generation communication protocols including but not limited to, the first generation (1G) , the second generation (2G) , 2.5G, 2.75G, the third generation (3G) , the fourth generation (4G) , 4.5G, the fifth generation (5G) communication protocols, and/or any other protocols either currently known or to be developed in the future.
  • Embodiments of the present disclosure may be applied in various communication systems. Given the rapid development in communications, there will also be future type communication technologies and systems in which the present disclosure may be embodied. It should not be seen as limiting the scope of the present disclosure to only the aforementioned systems.
  • the term “network device” generally refers to a node in a communication network via which a terminal device can access the communication network and receive services therefrom.
  • the network device may refer to a base station (BS) or an access point (AP) , for example, a node B (NodeB or NB) , a radio access network (RAN) node, an evolved NodeB (eNodeB or eNB) , a NR NB (also referred to as a gNB) , a remote radio unit (RRU) , a radio header (RH) , an infrastructure device for a V2X (vehicle-to-everything) communication, a transmission and reception point (TRP) , a reception point (RP) , a remote radio head (RRH) , a relay, an integrated access and backhaul (IAB) node, a low power node such as a femto BS, a pico BS, and so forth, depending on
  • terminal device generally refers to any end device that may be capable of wireless communications.
  • a terminal device may also be referred to as a communication device, a user equipment (UE) , an end user device, a subscriber station (SS) , an unmanned aerial vehicle (UAV) , a portable subscriber station, a mobile station (MS) , or an access terminal (AT) .
  • UE user equipment
  • SS subscriber station
  • UAV unmanned aerial vehicle
  • MS mobile station
  • AT access terminal
  • the terminal device may include, but is not limited to, a mobile phone, a cellular phone, a smart phone, a voice over IP (VoIP) phone, a wireless local loop phone, a tablet, a wearable terminal device, a personal digital assistant (PDA) , a portable computer, a desktop computer, an image capture terminal device such as a digital camera, a gaming terminal device, a music storage and playback appliance, a vehicle-mounted wireless terminal device, a wireless endpoint, a mobile station, laptop-embedded equipment (LEE) , laptop-mounted equipment (LME) , a USB dongle, a smart device, wireless customer-premises equipment (CPE) , an internet of things (loT) device, a watch or other wearable, a head-mounted display (HMD) , a vehicle, a drone, a medical device (for example, a remote surgery device) , an industrial device (for example, a robot and/or other wireless devices operating in an industrial and/or an automated processing chain
  • RAN2 introduces the concept of SL positioning server UE for SL positioning.
  • the SL positioning server UE (for simplicity, also referred as “a server UE” ) can be used for location calculation of a target UE and mainly for cases without location management function (LMF) involvement.
  • LMF location management function
  • RAN2 confirms that for out-of-coverage scenario, the functionalities of method determination, assistant data distribution and anchor UE selection can be performed by a SL positioning server UE.
  • RAN2 confirms that for cases without LMF involvement, besides method determination, assistant data distribution and anchor UE selection (agreed in RAN2) , the SL positioning server UE may perform SL-PRS configuration coordination and location calculation. However, only the functions of the server UE are described, and how to enable server UE-based SL positioning without LMF involvement is still unclear.
  • SA2 has mentioned the coexistence of LMF and SL positioning server UE/server UE in TR 23.700-86 and TS 23.586, where the LMF can decide that a SL positioning server UE executes the result calculation.
  • LMF can decide that a SL positioning server UE executes the result calculation.
  • Such operation exhibits advantages especially for partial coverage scenarios and the case that Uu connection of involved UEs is poor.
  • the location request may be sent to the LMF or initiated from the LMF and a SL positioning may be determined.
  • out-of-coverage (OOC) anchor UEs measure SL-PRS from a target UE
  • the OOC anchor UEs need a SL relay UE to assist them to send measurement reports to the LMF. Since the size of measurement result is larger than positioning result, introducing a server UE to calculate the positioning result can avoid resulting unnecessary signaling overhead and latency.
  • the LMF may select a server UE (or a computing UE/location calculation UE) or may request the target UE to select the server UE.
  • SL Positioning Server UE can be discovered and selected for result calculation, method determination, assistant data distribution and SL reference UE selection in case of out-of-coverage or for UE-only Operation if no Ranging/SL Positioning capable LMF is available. If LMF is capable for Ranging/SL Positioning and is reachable by Target UE and/or Reference UE, the LMF can still decide that SL Positioning Server UE executes the result calculation.
  • a SL Positioning Server UE can be discovered and selected for result calculation, method determination, assistant data distribution and SL Reference UE selection in case of out-of-coverage or for UE-only Operation if the serving network does not support Ranging/SL Positioning. If the LMF capable for Ranging/SL Positioning is reachable by Target UE and/or Reference UE, the LMF can still decide that Target UE or Reference UE executes the result calculation.
  • a SL Positioning Server UE can be co-located with a Target UE or Reference UE.
  • a terminal device determines, for a positioning procedure in which the terminal device is a target UE, a server UE from a set of candidate server UEs or at least one anchor UE from a set of candidate anchor UEs.
  • the target UE transmits, to the server UE, a request for anchor UE information indicative of at least one anchor UE among the set of candidate anchor UEs.
  • the server UE selects at least one anchor UE from the set of candidate anchor UEs and transmits, to the target UE, the anchor UE information indicative of the at least one anchor UE.
  • the target UE transmits, to the set of candidate server UEs, a request for link quality information indicative of link qualities between the set of candidate server UEs and the at least one anchor UE.
  • the candidate server UE determines at least one link quality between the candidate server UE and the at least one anchor UE and transmits, to the target UE, the link quality information indicative of the at least one link quality.
  • the anchor UE may be selected by the server UE.
  • the server UE may be selected based on its link quality with the anchor UE. Either option may guarantee the communication between the anchor UE and the server UE, which reduces signaling overhead and latency in the positioning procedure of the target UE. Thus, the communication reliability and efficiency in the positioning procedure of the target UE may be improved.
  • FIG. 1A illustrates an example of a wireless communications system 100 that supports positioning of a target UE in accordance with aspects of the present disclosure.
  • the wireless communications system 100 may include one or more network entities 102 (also referred to as network equipment (NE) or network device) , one or more UEs 104, a core network 106, and a packet data network 108.
  • the wireless communications system 100 may support various radio access technologies.
  • the wireless communications system 100 may be a 4G network, such as an LTE network or an LTE-Advanced (LTE-A) network.
  • LTE-A LTE-Advanced
  • the wireless communications system 100 may be a 5G network, such as an NR network.
  • the wireless communications system 100 may be a combination of a 4G network and a 5G network, or other suitable radio access technology including Institute of Electrical and Electronics Engineers (IEEE) 802.11 (Wi-Fi) , IEEE 802.16 (WiMAX) , IEEE 802.20.
  • IEEE Institute of Electrical and Electronics Engineers
  • Wi-Fi Wi-Fi
  • WiMAX IEEE 802.16
  • IEEE 802.20 The wireless communications system 100 may support radio access technologies beyond 5G. Additionally, the wireless communications system 100 may support technologies, such as time division multiple access (TDMA) , frequency division multiple access (FDMA) , or code division multiple access (CDMA) , etc.
  • TDMA time division multiple access
  • FDMA frequency division multiple access
  • CDMA code division multiple access
  • the one or more network entities 102 may be dispersed throughout a geographic region to form the wireless communications system 100.
  • One or more of the network entities 102 described herein may be or include or may be referred to as a network node, a base station, a network element, a radio access network (RAN) , a base transceiver station, an access point, a NodeB, an eNodeB (eNB) , a next-generation NodeB (gNB) , or other suitable terminology.
  • a network entity 102 and a UE 104 may communicate via a communication link 110, which may be a wireless or wired connection.
  • a network entity 102 and a UE 104 may perform wireless communication (e.g., receive signaling, transmit signaling) over a Uu interface.
  • a network entity 102 may provide a geographic coverage area 112 for which the network entity 102 may support services (e.g., voice, video, packet data, messaging, broadcast, etc. ) for one or more UEs 104 within the geographic coverage area 112.
  • a network entity 102 and a UE 104 may support wireless communication of signals related to services (e.g., voice, video, packet data, messaging, broadcast, etc. ) according to one or multiple radio access technologies.
  • a network entity 102 may be moveable, for example, a satellite associated with a non-terrestrial network.
  • different geographic coverage areas 112 associated with the same or different radio access technologies may overlap, but the different geographic coverage areas 112 may be associated with different network entities 102.
  • Information and signals described herein may be represented using any of a variety of different technologies and techniques.
  • data, instructions, commands, information, signals, bits, symbols, and chips that may be referenced throughout the description may be represented by voltages, currents, electromagnetic waves, magnetic fields or particles, optical fields or particles, or any combination thereof.
  • the one or more UEs 104 may be dispersed throughout a geographic region of the wireless communications system 100.
  • a UE 104 may include or may be referred to as a mobile device, a wireless device, a remote device, a remote unit, a handheld device, or a subscriber device, or some other suitable terminology.
  • the UE 104 may be referred to as a unit, a station, a terminal, or a client, among other examples.
  • the UE 104 may be referred to as an Internet-of-Things (IoT) device, an Internet-of-Everything (IoE) device, or machine-type communication (MTC) device, among other examples.
  • IoT Internet-of-Things
  • IoE Internet-of-Everything
  • MTC machine-type communication
  • a UE 104 may be stationary in the wireless communications system 100.
  • a UE 104 may be mobile in the wireless communications system 100.
  • the one or more UEs 104 may be devices in different forms or having different capabilities. Some examples of UEs 104 are illustrated in FIG. 1A.
  • a UE 104 may be capable of communicating with various types of devices, such as the network entities 102, other UEs 104, or network equipment (e.g., the core network 106, the packet data network 108, a relay device, an integrated access and backhaul (IAB) node, or another network equipment) , as shown in FIG. 1A.
  • a UE 104 may support communication with other network entities 102 or UEs 104, which may act as relays in the wireless communications system 100.
  • a UE 104 may also be able to support wireless communication directly with other UEs 104 over a communication link 114.
  • a UE 104 may support wireless communication directly with another UE 104 over a device-to-device (D2D) communication link.
  • D2D device-to-device
  • the communication link 114 may be referred to as a sidelink.
  • a UE 104 may support wireless communication directly with another UE 104 over a PC5 interface.
  • a network entity 102 may support communications with the core network 106, or with another network entity 102, or both.
  • a network entity 102 may interface with the core network 106 through one or more backhaul links 116 (e.g., via an S1, N2, N2, or another network interface) .
  • the network entities 102 may communicate with each other over the backhaul links 116 (e.g., via an X2, Xn, or another network interface) .
  • the network entities 102 may communicate with each other directly (e.g., between the network entities 102) .
  • the network entities 102 may communicate with each other or indirectly (e.g., via the core network 106) .
  • one or more network entities 102 may include subcomponents, such as an access network entity, which may be an example of an access node controller (ANC) .
  • An ANC may communicate with the one or more UEs 104 through one or more other access network transmission entities, which may be referred to as a radio heads, smart radio heads, or transmission-reception points (TRPs) .
  • TRPs transmission-reception points
  • a network entity 102 may be configured in a disaggregated architecture, which may be configured to utilize a protocol stack physically or logically distributed among two or more network entities 102, such as an integrated access backhaul (IAB) network, an open RAN (O-RAN) (e.g., a network configuration sponsored by the O-RAN Alliance) , or a virtualized RAN (vRAN) (e.g., a cloud RAN (C-RAN) ) .
  • IAB integrated access backhaul
  • O-RAN open RAN
  • vRAN virtualized RAN
  • C-RAN cloud RAN
  • a network entity 102 may include one or more of a central unit (CU) , a distributed unit (DU) , a radio unit (RU) , a RAN Intelligent Controller (RIC) (e.g., a Near-Real Time RIC (Near-RT RIC) , a Non-Real Time RIC (Non-RT RIC) ) , a Service Management and Orchestration (SMO) system, or any combination thereof.
  • CU central unit
  • DU distributed unit
  • RU radio unit
  • RIC RAN Intelligent Controller
  • RIC e.g., a Near-Real Time RIC (Near-RT RIC) , a Non-Real Time RIC (Non-RT RIC)
  • SMO Service Management and Orchestration
  • An RU may also be referred to as a radio head, a smart radio head, a remote radio head (RRH) , a remote radio unit (RRU) , or a transmission reception point (TRP) .
  • One or more components of the network entities 102 in a disaggregated RAN architecture may be co-located, or one or more components of the network entities 102 may be located in distributed locations (e.g., separate physical locations) .
  • one or more network entities 102 of a disaggregated RAN architecture may be implemented as virtual units (e.g., a virtual CU (VCU) , a virtual DU (VDU) , a virtual RU (VRU) ) .
  • VCU virtual CU
  • VDU virtual DU
  • VRU virtual RU
  • Split of functionality between a CU, a DU, and an RU may be flexible and may support different functionalities depending upon which functions (e.g., network layer functions, protocol layer functions, baseband functions, radio frequency functions, and any combinations thereof) are performed at a CU, a DU, or an RU.
  • functions e.g., network layer functions, protocol layer functions, baseband functions, radio frequency functions, and any combinations thereof
  • a functional split of a protocol stack may be employed between a CU and a DU such that the CU may support one or more layers of the protocol stack and the DU may support one or more different layers of the protocol stack.
  • the CU may host upper protocol layer (e.g., a layer 3 (L3) , a layer 2 (L2) ) functionality and signaling (e.g., Radio Resource Control (RRC) , service data adaption protocol (SDAP) , Packet Data Convergence Protocol (PDCP) ) .
  • RRC Radio Resource Control
  • SDAP service data adaption protocol
  • PDCP Packet Data Convergence Protocol
  • the CU may be connected to one or more DUs or RUs, and the one or more DUs or RUs may host lower protocol layers, such as a layer 1 (L1) (e.g., physical (PHY) layer) or an L2 (e.g., radio link control (RLC) layer, medium access control (MAC) layer) functionality and signaling, and may each be at least partially controlled by the CU 160.
  • L1 e.g., physical (PHY) layer
  • L2 e.g., radio link control (RLC) layer, medium access
  • a functional split of the protocol stack may be employed between a DU and an RU such that the DU may support one or more layers of the protocol stack and the RU may support one or more different layers of the protocol stack.
  • the DU may support one or multiple different cells (e.g., via one or more RUs) .
  • a functional split between a CU and a DU, or between a DU and an RU may be within a protocol layer (e.g., some functions for a protocol layer may be performed by one of a CU, a DU, or an RU, while other functions of the protocol layer are performed by a different one of the CU, the DU, or the RU) .
  • a CU may be functionally split further into CU control plane (CU-CP) and CU user plane (CU-UP) functions.
  • a CU may be connected to one or more DUs via a midhaul communication link (e.g., F1, F1-c, F1-u)
  • a DU may be connected to one or more RUs via a fronthaul communication link (e.g., open fronthaul (FH) interface)
  • FH open fronthaul
  • a midhaul communication link or a fronthaul communication link may be implemented in accordance with an interface (e.g., a channel) between layers of a protocol stack supported by respective network entities 102 that are in communication via such communication links.
  • the core network 106 may support user authentication, access authorization, tracking, connectivity, and other access, routing, or mobility functions.
  • the core network 106 may be an evolved packet core (EPC) , or a 5G core (5GC) , which may include a control plane entity that manages access and mobility (e.g., a mobility management entity (MME) , an access and mobility management functions (AMF) ) and a user plane entity that routes packets or interconnects to external networks (e.g., a serving gateway (S-GW) , a Packet Data Network (PDN) gateway (P-GW) , or a user plane function (UPF) ) .
  • EPC evolved packet core
  • 5GC 5G core
  • MME mobility management entity
  • AMF access and mobility management functions
  • S-GW serving gateway
  • PDN gateway Packet Data Network gateway
  • UPF user plane function
  • control plane entity may manage non-access stratum (NAS) functions, such as mobility, authentication, and bearer management (e.g., data bearers, signal bearers, etc. ) for the one or more UEs 104 served by the one or more network entities 102 associated with the core network 106.
  • NAS non-access stratum
  • the core network 106 may communicate with the packet data network 108 over one or more backhaul links 116 (e.g., via an S1, N2, N2, or another network interface) .
  • the packet data network 108 may include an application server 118.
  • one or more UEs 104 may communicate with the application server 118.
  • a UE 104 may establish a session (e.g., a protocol data unit (PDU) session, or the like) with the core network 106 via a network entity 102.
  • the core network 106 may route traffic (e.g., control information, data, and the like) between the UE 104 and the application server 118 using the established session (e.g., the established PDU session) .
  • the PDU session may be an example of a logical connection between the UE 104 and the core network 106 (e.g., one or more network functions of the core network 106) .
  • the network entities 102 and the UEs 104 may use resources of the wireless communications system 100 (e.g., time resources (e.g., symbols, slots, subframes, frames, or the like) or frequency resources (e.g., subcarriers, carriers) ) to perform various operations (e.g., wireless communications) .
  • the network entities 102 and the UEs 104 may support different resource structures.
  • the network entities 102 and the UEs 104 may support different frame structures.
  • the network entities 102 and the UEs 104 may support a single frame structure.
  • the network entities 102 and the UEs 104 may support various frame structures (i.e., multiple frame structures) .
  • the network entities 102 and the UEs 104 may support various frame structures based on one or more numerologies.
  • One or more numerologies may be supported in the wireless communications system 100, and a numerology may include a subcarrier spacing and a cyclic prefix.
  • a first subcarrier spacing e.g., 15 kHz
  • a normal cyclic prefix e.g. 15 kHz
  • the first numerology associated with the first subcarrier spacing (e.g., 15 kHz) may utilize one slot per subframe.
  • a time interval of a resource may be organized according to frames (also referred to as radio frames) .
  • Each frame may have a duration, for example, a 10 millisecond (ms) duration.
  • each frame may include multiple subframes.
  • each frame may include 10 subframes, and each subframe may have a duration, for example, a 1 ms duration.
  • each frame may have the same duration.
  • each subframe of a frame may have the same duration.
  • a time interval of a resource may be organized according to slots.
  • a subframe may include a number (e.g., quantity) of slots.
  • the number of slots in each subframe may also depend on the one or more numerologies supported in the wireless communications system 100.
  • Each slot may include a number (e.g., quantity) of symbols (e.g., OFDM symbols) .
  • the number (e.g., quantity) of slots for a subframe may depend on a numerology.
  • a slot For a normal cyclic prefix, a slot may include 14 symbols.
  • a slot For an extended cyclic prefix (e.g., applicable for 60 kHz subcarrier spacing) , a slot may include 12 symbols.
  • an electromagnetic (EM) spectrum may be split, based on frequency or wavelength, into various classes, frequency bands, frequency channels, etc.
  • the wireless communications system 100 may support one or multiple operating frequency bands, such as frequency range designations FR1 (410 MHz –7.125 GHz) , FR2 (24.25 GHz –52.6 GHz) , FR3 (7.125 GHz –24.25 GHz) , FR4 (52.6 GHz –114.25 GHz) , FR4a or FR4-1 (52.6 GHz –71 GHz) , and FR5 (114.25 GHz –300 GHz) .
  • FR1 410 MHz –7.125 GHz
  • FR2 24.25 GHz –52.6 GHz
  • FR3 7.125 GHz –24.25 GHz
  • FR4 (52.6 GHz –114.25 GHz)
  • FR4a or FR4-1 52.6 GHz –71 GHz
  • FR5 114.25 GHz
  • the network entities 102 and the UEs 104 may perform wireless communications over one or more of the operating frequency bands.
  • FR1 may be used by the network entities 102 and the UEs 104, among other equipment or devices for cellular communications traffic (e.g., control information, data) .
  • FR2 may be used by the network entities 102 and the UEs 104, among other equipment or devices for short-range, high data rate capabilities.
  • FR1 may be associated with one or multiple numerologies (e.g., at least three numerologies) .
  • FR2 may be associated with one or multiple numerologies (e.g., at least 2 numerologies) .
  • FIGS. 1B and 1C illustrate examples of a wireless communications system that supports positioning of a target UE in partial coverage scenarios in accordance with aspects of the present disclosure.
  • FIG. 1B illustrates an example of a wireless communications system 100-1 that supports positioning of a target UE which is located in-coverage (IC) in accordance with aspects of the present disclosure.
  • IC in-coverage
  • the wireless communications system 100-1 may be considered as part of or a specific example of the wireless communications system 100 in FIG. 1A.
  • the wireless communications system 100-1 may include a network entity (e.g., a base station) 102, a target terminal device (also referred to as a target UE or a T-UE) 104-1, anchor terminal devices (also referred to as anchor UEs or A-UEs) 104-3, a server terminal device (also referred to as a server UE or a S-UE) 104-2 and a location management function (LMF) 106-1.
  • the server UE 104-1 may be in the geographic coverage area 112 of the network entity 102.
  • the LMF 106-1 may be a network element of the core network 106. It should be understood that the LMF 106-1 is merely for illustration. Other types of location servers are also possible.
  • the target UE 104-1 is in the geographic coverage area 112 of the network entity 102 while at least one anchor UE is out of the geographic coverage area 112.
  • the target UE 104-1 may transmit a sidelink positioning reference signal (SL-PRS) to the anchor UEs 104-3.
  • the anchor UEs 104-3 may obtain measurement results based on the received SL-PRS and report the measurement results to the server UE 104-2. If the server UE 104-2 also serves as an anchor UE, the server UE 104-2 may also obtain measurement results based on the SL-PRS received from the target UE 104-1.
  • the server UE 104-2 may estimate the position of the target UE 104-1 based on the measurement results from the anchor UEs and optionally the measurement results determined by itself. The server UE 104-2 may then transmit the estimated positioning result of the target UE 104-1 to the LMF 106-1 via the network entity 102.
  • the terms “positioning result” and “location result” may be used interchangeably and the terms “position” and “location” may be used interchangeably.
  • the server UE 104-2 may be located in one of the anchor UEs 104-3. In other words, the server UE 104-2 may also serve as an anchor UE for the positioning procedure of the target UE 104-1. In some other implementations, the server UE 104-2 may be located in the target UE 104-1. In other words, the target UE 104-1 itself may serve as the server UE. Alternatively, the server UE 104-2 may be located in a separate entity.
  • FIG. 1C illustrates an example of a wireless communications system 100-2 that supports positioning of a target UE which is located out-of-coverage (OOC) in accordance with aspects of the present disclosure. It is noted that the wireless communications system 100-2 may be considered as part of or a specific example of the wireless communications system 100 in FIG. 1A. Similar reference numerals are used to denote the steps or components described in FIG. 1C having the same operations as the steps or components described in FIG. 1B, and detailed description thereof will be omitted.
  • the target UE 104-1 is out of the geographic coverage area 112 of the network entity 102.
  • the target UE 104-1 may transmit a SL-PRS to the anchor UEs.
  • the anchor UEs 104-3 may obtain measurement results based on the received SL-PRS and report the measurement results to the server UE 104-2.
  • the server UE 104-2 may estimate the position of the target UE 104-1 based on the measurement results and then transmit the estimated positioning result of the target UE 104-1 to the LMF 106-1 via the network entity 102.
  • FIG. 2A shows an example signaling chart of a communication process 200A that supports positioning of a target UE in accordance with some example embodiments of the present disclosure.
  • the process 200A will be described with reference to FIGS. 1A-1C.
  • the process 200A may involve the target UE 104-1 and the server UE 104-2 as illustrated in FIGS. 1B-1C. It is to be understood that the steps and the order of the steps in FIG. 2A are merely for illustration, and not for limitation. It is to be understood that process 200A may further include additional blocks not shown and/or omit some shown blocks, and the scope of the present disclosure is not limited in this regard.
  • the target UE 104-1 determines 202, for a positioning procedure, a server UE 104-2 from a set of candidate server UEs.
  • the target UE 104-1 transmits 204, to the server UE 104-2, a request 208 for anchor UE information indicative of at least one anchor UE among the set of candidate anchor UEs.
  • the server UE 104-2 receives 210 the request 208 and selects 212 at least one anchor UE from the set of candidate anchor UEs.
  • the server UE 104-2 transmits 214, to the target UE 104-1, the anchor UE information 216 indicative of the at least one anchor UE.
  • the target UE 104-1 receives 218 the anchor UE information 216.
  • the positioning procedure of the target UE may be enabled.
  • the at least one anchor UE is determined by the server UE, which guarantees the communication between the server UE and the anchor UE. Thus, the communication reliability and efficiency in the positioning procedure of the target UE may be improved.
  • the request 208 for the anchor UE information may include an indication of a role of the server UE 104-2 in the positioning procedure.
  • the server UE 104-2 may be aware that it would serve as a server UE in the positioning procedure of the target UE 104-1.
  • the request 208 for the anchor UE information may include an indication of operations to be performed by the server UE 104-2.
  • the server UE 104-2 may be aware of its responsibilities for the positioning procedure.
  • the operations to be performed by the server UE 104-2 may include an anchor UE selection.
  • the operations to be performed by the server UE 104-2 may include related configuration operations for the positioning procedure, such as an operation of providing the target UE 104-1 or at least one anchor UE with a configuration for a SL-PRS for the positioning procedure; an operation of providing at least one anchor UE or the target UE 104-1 with a configuration for a SL-PRS measurement; or an operation of providing at least one anchor UE or the target UE 104-1 with a configuration for a SL-PRS measurement report, or any combination thereof.
  • the operations to be performed by the server UE 104-2 may include a location calculation of the target UE 104-1.
  • the request 208 for the anchor UE information may include information of the set of candidate anchor UEs.
  • the server UE 104-2 may select the anchor UE from the candidate anchor UEs indicated by the target UE 104-1, which may guarantee the communication between the anchor UE and the target UE.
  • the information of the set of candidate anchor UEs may include identities of candidate anchor UEs in the set of candidate anchor UEs.
  • the information of the set of candidate anchor UEs may include an indication of a role of candidate anchor UEs in the set of candidate anchor UEs in the positioning procedure.
  • the information of the set of candidate anchor UEs may include capabilities of candidate anchor UEs in the set of candidate anchor UEs for the positioning procedure.
  • the information of the set of candidate anchor UEs may include any combination of the above and optionally other information associated with the set of candidate anchor UEs, facilitating the server UE to perform an anchor UE selection.
  • the request 208 for the anchor UE information may include a QoS requirement associated with the positioning procedure.
  • the QoS requirement may be associated with the calculated location result.
  • the server UE 104-2 may calculate the location of the target UE 104-1 and evaluate whether the calculated location result can satisfy the QoS requirement. If the calculated location result satisfies the QoS requirement, the server UE 104-2 may transmit the calculated location result to the device that requests the location information of the target UE 104-1, which may be e.g., the target UE 104-1, a location server (e.g., a LMF) , or other devices. If the calculated location result doesn’t satisfy the QoS requirement, the server UE 104-2 may transmit an indication that the calculated location result doesn’t satisfy the QoS requirement to the device that requests the location information of the target UE 104-1.
  • a location server e.g., a LMF
  • the server UE 104-2 may discover candidate anchor UEs among the set of candidate anchor UEs. Some of the candidate anchor UEs may be not discovered by the server UE 104-2, e.g., due to the long distance from the server UE 104-2.
  • the server UE 104-2 may determine link qualities between the server UE 104-2 and the discovered candidate anchor UEs. In some embodiments, the link quality may be indicated by a sidelink discovery-reference signal received power (SD-RSRP) between the server UE 104-2 and the discovered candidate anchor UEs. Alternatively or additionally, the link quality may be indicated with other information than the SD-RSRP.
  • the server UE 104-2 may determine the at least one anchor UE from the discovered candidate anchor UEs based on the link qualities and the QoS requirement associated with the positioning procedure.
  • the anchor UE information 216 may include at least one identity of the at least one anchor UE.
  • the target UE 104-1 may thus be aware which terminal device will serve as its anchor UE.
  • FIG. 2B shows another example signaling chart of a communication process 200B that supports positioning of a target UE in accordance with some example embodiments of the present disclosure.
  • the process 200B will be described with reference to FIGS. 1A-1C.
  • the process 200B may involve the target UE 104-1 as illustrated in FIGS. 1B-1C and a candidate server UE 104-2’.
  • a candidate server UE 104-2 may be selected from the multiple candidate server UEs.
  • the steps and the order of the steps in FIG. 2B are merely for illustration, and not for limitation.
  • process 200B may further include additional blocks not shown and/or omit some shown blocks, and the scope of the present disclosure is not limited in this regard.
  • the target UE 104-1 determines 222, for a positioning procedure, at least one anchor UE (e.g., the at least one anchor UE 104-3 in FIGS. 1B-1C) from a set of candidate anchor UEs.
  • the target UE 104-1 transmits 224, to the candidate server UE 104-2’, a request 226 for link quality information associated with the at least one anchor UE 104-3.
  • the candidate server UE 104-2’ receives the request 226 and determines 230 at least one link quality between the candidate server UE 104-2’ and the at least one anchor UE 104-3.
  • the candidate server UE 104-2’ transmits 232 the link quality information 234 indicative of the at least one link quality to the target UE 104-1.
  • the target UE 104-1 receives 236 the link quality information 234.
  • the server UE may be selected based on the link quality information, which guarantees the communication between the server UE and the anchor UE.
  • the communication reliability and efficiency in the positioning procedure of the target UE may be improved.
  • the request 226 for the link quality information may include information of the at least one anchor UE 104-3 and a requirement indication for the link quality information.
  • the information of the at least one anchor UE 104-3 may include at least one identity of the at least one anchor UE 104-3 and an indication of a role of the at least one anchor UE 104-3 in the positioning procedure.
  • the candidate server UE 104-2’ may perform the link quality determination with the indicated anchor UE 104-3.
  • the link quality information 234 may include an indication of a sidelink discovery-reference signal received power (SD-RSRP) between the candidate server UE 104-2’ a nd the at least one anchor UE 104-3.
  • SD-RSRP sidelink discovery-reference signal received power
  • the link quality may be indicated with other information than the SD-RSRP.
  • the target UE 104-1 may transmit requests for link quality information to a set of candidate server UEs. After receiving the link quality information from the set candidate server UEs, the target UE 104-1 may determine a server UE (e.g., the server UE 104-2 in FIGS. 1B-1C) from the set of candidate server UEs based on the link quality information. The target UE 104-1 may transmit, to the server UE 104-2, an indication of a role of the server UE 104-2 in the positioning procedure.
  • a server UE e.g., the server UE 104-2 in FIGS. 1B-1C
  • FIG. 2C shows a further example signaling chart of a communication process 200C that supports positioning of a target UE in accordance with some example embodiments of the present disclosure.
  • the process 200C may involve the server UE 104-2 as illustrated in FIGS. 1B-1C and a network device 206-1.
  • the network device 206-1 may be a network element of the core network 106 as illustrated in FIG. 1A.
  • the network device 206-1 may be implemented as a location server, such as the LMF 106-1 as illustrated in FIGS. 1B-1C. Other types of location servers are also possible.
  • the steps and the order of the steps in FIG. 2C are merely for illustration, and not for limitation.
  • process 200C may further include additional blocks not shown and/or omit some shown blocks, and the scope of the present disclosure is not limited in this regard.
  • the network device 206-1 determines 242 that a server UE is to be determined for a positioning procedure of a target UE (e.g., the target UE 104-1 in FIGS. 1B-1C) . In other words, the network device 206-1 may determine that a server UE is needed for the positioning procedure.
  • the network device 206-1 determines 244 the server UE 104-2 for the positioning procedure.
  • the network device 206-1 transmits 246, to the server UE 104-2, a request 248 for a location calculation result of the target UE 104-1.
  • the server UE 104-2 receives 250 the request 248 from the network device 206-1 and performs 252 a location calculation of the target UE 104-1 to obtain the location calculation result of the target UE 104-1.
  • the server UE 104-2 transmits 254, to the network device 206-1, information 256 associated with the location calculation result.
  • the network device 206-1 receives 258 the information 256 from the server UE 104-2.
  • the network device 206-1 may have determined at least one anchor UE (e.g., the anchor UEs 104-3 in FIGS. 1B-1C) for the positioning procedure prior to the determination 244 of the server UE. For example, prior to the determination 242, the network device 206-1 may determine the at least one anchor UE based on (candidate) anchor UE information received from the target UE 104-1.
  • the anchor UE e.g., the anchor UEs 104-3 in FIGS. 1B-1C
  • the determination 244 of the server UE 104-2 may be performed in various manners, some example implementations of which will be illustrated in the following.
  • the server UE selection may be performed by the target UE 104-1.
  • FIG. 2D illustrates an example signaling chart of a communication process 244A that supports a server UE selection by a target UE with network device involvement in accordance with some example embodiments of the present disclosure.
  • the process 244A will be described with reference to FIGS. 1A-1C.
  • the process 244A may involve the target UE 104-1 and the network device 206-1 as illustrated in FIGS. 1B-1C. It is to be understood that the steps and the order of the steps in FIG. 2D are merely for illustration, and not for limitation.
  • process 244A may be considered as part of the process 200C in FIG. 2C and may be performed after the determination 242. It is to be understood that process 244A may further include additional blocks not shown and/or omit some shown blocks, and the scope of the present disclosure is not limited in this regard.
  • the network device 206-1 may transmit 261 a request 262 for server UE information to the target UE 104-1.
  • the target UE 104-1 may determine 264 a server UE (e.g., the server UE 104-2 in FIGS. 1B-1C) from a set of candidate server UEs based on link quality information indicative of link qualities between the set of candidate server UEs and the at least one anchor UE and the request for the server UE information.
  • the target UE 104-1 may transmit 265 the server UE information 266 to the network device 206-1.
  • the server UE information may include an identity of the server UE 104-2.
  • the network device 206-1 may receive 267 the server UE information 266 and then determine 244 the server UE based on the received server UE information 266.
  • various embodiments of the process 200B may be applied to the server UE selection 264 by the target UE 104-1 in the process 244A, and detailed description thereof will be omitted.
  • the link quality information may be determined based on the request of the server UE information in a manner similar to embodiments of the process 200B.
  • the request 262 for the server UE information transmitted from the network device 206-1 may include at least one selection criterion for selecting the server UE.
  • the at least one selection criterion may include a computing ability criterion, a positioning method criterion, a network coverage criterion, or a link quality criterion or a combination thereof.
  • the target UE 104-1 may select the server UE from the set of candidate server UE based on the criterion.
  • the target UE 104-1 may transmit information of the server UE 104-2 to the at least one anchor UE 104-3.
  • the information of the server UE 104-2 may include an identity of the server UE 104-2 and an indication of a role of the server UE 104-2 in the positioning procedure.
  • the anchor UE 104-3 may be aware of the existence and identity of the server UE for the positioning procedure.
  • FIG. 2E illustrates an example signaling chart of a communication process 244B that supports a server UE selection by a network device in accordance with some example embodiments of the present disclosure.
  • the process 244B will be described with reference to FIGS. 1A-1C.
  • the process 244B may involve the target UE 104-1 and the network device 206-1 as illustrated in FIGS. 1B-1C. It is to be understood that the steps and the order of the steps in FIG. 2E are merely for illustration, and not for limitation.
  • the process 244B may be considered as part of the process 200C in FIG. 2C and may be performed after the determination 242. It is to be understood that process 244B may further include additional blocks not shown and/or omit some shown blocks, and the scope of the present disclosure is not limited in this regard.
  • the network device 206-1 may transmit 271, to the target UE 104-1, a request 272 for candidate server UE information.
  • the target UE 104-1 may determine 274 information of the set of candidate server UEs and link quality information indicative of link qualities between the set of candidate server UEs and the at least one anchor UE based on the request for the candidate server UE information.
  • the target UE 104-1 may transmit 275 the candidate server UE information 276 to the network device 206-1.
  • the candidate server UE information 276 may include the information of the set of candidate server UEs and the link quality information indicating link qualities between the set of candidate server UEs and the at least one anchor UE 104-3.
  • the network device 206-1 may receive 277 the candidate server UE information 276 and then determine 244 the server UE based on the information of the set of candidate server UEs and the link quality information in the candidate server UE information 276.
  • various embodiments of the process 200B may be applied to the determination 274 of the candidate server UE information by the target UE 104-1 in the process 244B, and detailed description thereof will be omitted.
  • the link quality information may be determined based on the request of the candidate server UE information in a manner similar to embodiments of the process 200B.
  • the information of the set of candidate server UEs may include identities of candidate server UEs in the set of candidate server UEs.
  • the information of the set of candidate server UEs may include computing abilities of candidate server UEs in the set of candidate server UEs.
  • the information of the set of candidate server UEs may include supported positioning methods of candidate server UEs in the set of candidate server UEs.
  • the information of the set of candidate server UEs may include network coverage information associated with candidate server UEs in the set of candidate server UEs.
  • the information of the set of candidate server UEs may include any combination of the above and optionally other information associated with the set of candidate server UEs, facilitating the network device to perform a server UE selection.
  • the network device 206-1 may transmit necessary assistance data to the involved UEs for the positioning procedure, such as the server UE 104-2, the target UE 104-1 and/or the at least one anchor UE 104-3.
  • the network device 206-1 may transmit, to the server UE 104-2, assistance data for the positioning procedure.
  • the assistance data transmitted from the network device 206-1 to the server UE 104-2 may include an indication of a role of the server UE 104-2 in the positioning procedure. With the role indication, the server UE 104-2 may be aware that it would serve as a server UE in the positioning procedure of the target UE 104-1.
  • the assistance data may include an indication of operations to be performed by the server UE 104-2.
  • the server UE 104-2 may be aware of its responsibilities for the positioning procedure.
  • the assistance data may include information associated with the operations to be performed by the server UE 104-2.
  • the server UE 104-2 may be aware of information for taking these responsibilities.
  • the information associated with operations to be performed by the server UE 104-2 may include a positioning method for the positioning procedure.
  • the information associated with operations to be performed by the server UE 104-2 may include an identity of a terminal device transmitting a SL-PRS for the positioning procedure.
  • the information associated with operations to be performed by the server UE 104-2 may include an identity of a terminal device measuring the SL-PRS.
  • the information associated with operations to be performed by the server UE 104-2 may include location information of at least one anchor UE 104-3 in the positioning procedure, such that the server UE 104-2 may be able to calculate the absolute location of the target UE 104-1.
  • the information associated with operations to be performed by the server UE 104-2 may include at least one location accuracy of the at least one anchor UE 104-3.
  • the information associated with operations to be performed by the server UE 104-2 may include a QoS requirement associated with the positioning procedure, such that the server UE 104-2 may be able to evaluate the calculation result.
  • the information associated with operations to be performed by the server UE 104-2 may include a configuration for the SL-PRS.
  • the information associated with operations to be performed by the server UE 104-2 may include a configuration for a SL-PRS measurement.
  • the information associated with operations to be performed by the server UE 104-2 may include a configuration for a SL-PRS measurement report.
  • the network device 206-1 may transmit assistance data for the positioning procedure to the target UE 104-1 and/or to the at least one anchor UE 104-3. In some cases, the network device 206-1 may not or may be not able to transmit necessary assistance data to the target UE 104-1 and/or the at least one anchor UE 104-3, e.g., in partial coverage scenarios. Thus, the server UE 104-2 may transmit the assistance data to the target UE 104-1 and/or the at least one anchor UE 104-3.
  • FIG. 2F shows an example signaling chart of a communication process 280 that supports location measurement in accordance with some example embodiments of the present disclosure.
  • the process 280 may involve the anchor UE 104-3, the server UE 104-2 and the network device 206-1 as illustrated in FIGS. 1B-1C. It is to be understood that the steps and the order of the steps in FIG. 2F are merely for illustration, and not for limitation.
  • the process 280 may be considered as part of the process 200C in FIG. 2C and may be performed after the determination 244. It is to be understood that process 280 may further include additional blocks not shown and/or omit some shown blocks, and the scope of the present disclosure is not limited in this regard.
  • the network device 206-1 may transmit 282 assistance data 284 for the positioning procedure to the target UE 104-1 (not shown) and/or to the at least one anchor UE 104-3. If the network device 206-1 does not transmit the assistance data to the involved UEs, the server UE 104-2 may transmit 282’ assistance data 284 for the positioning procedure to the target UE 104-1 (not shown) and/or to the at least one anchor UE 104-3.
  • the assistance data 284 transmitted to the target UE 104-1 and/or to the at least one anchor UE 104-3 may include information of the server UE 104-2.
  • the information of the server UE 104-2 may include an identity of the server UE 104-2, an indication of a role of the server UE 104-2 in the positioning procedure; or an indication of operations to be performed by the server UE 104-2, or any combination thereof.
  • the target UE 104-1 and the at least one anchor UE 104-3 may be aware of which terminal device to report the measurement data to.
  • the assistance data 284 transmitted to the target UE 104-1 and/or to the at least one anchor UE 104-3 may include a configuration for a SL-PRS for the positioning procedure.
  • the assistance data 284 may include a configuration for a SL-PRS measurement.
  • the assistance data 284 may include a configuration for a SL-PRS measurement report.
  • the configuration for the SL-PRS measurement report may include an indication of a report mode, an indication of a response time for the SL-PRS measurement report, or a combination thereof.
  • the network device 206-1 or the server UE 104-2 may transmit the assistance data 284 to the target UE 104-1 and/or to the at least one anchor UE 104-3 via a broadcast signaling. In some other implementations, the network device 206-1 or the server UE 104-2 may transmit the assistance data 284 to the target UE 104-1 and/or to the at least one anchor UE 104-3 via a dedicated signaling.
  • One of the target UE 104-1 and the at least one anchor UE 104-3 may transmit the SL-PRS and the other one may measure the SL-PRS and report the location measurement data to the server UE 104-2.
  • the target UE 104-1 may transmit the SL-PRS to the at least one anchor UE 104-3 based on the configuration for the SL-PRS.
  • the at least one anchor UE 104-3 may measure the SL-PRS based on the configuration for a SL-PRS measurement and may report the location measurement data to the server UE 104-2 based on the configuration for the SL-PRS measurement report. As shown in FIG.
  • the anchor UE 104-3 may perform 288 a location measurement of the target UE 104-1 in the positioning procedure to obtain location measurement data 292 associated with the target UE 104-1.
  • the anchor UE 104-3 may transmit 290 the location measurement data 292 to the server UE 104-2.
  • the server UE 104-2 may receive 294 the location measurement data 292 and perform 252 the location calculation of the target UE 104-1 based on the received location measurement data.
  • the network device 206-1 may transmit the request 248 for the location calculation result to the server UE 104-2 via a RequestLocationInformation message.
  • the server UE 104-2 may transmit, to the target UE 104-1 or to the at least one anchor UE 104-3, a request for location measurement data associated with the target UE 104-1.
  • the request for location measurement data may be determined by the server UE 104-2.
  • the request for location measurement data may be based on the request 248 for the location calculation result.
  • the request for location measurement data may include a configuration for a SL-PRS measurement.
  • the request for location measurement data may include a configuration for a SL-PRS measurement report.
  • the request for location measurement data may include an indication of a report mode of the location measurement data and/or an indication of a response time for the location measurement data.
  • the involved UE measuring the SL-PRS e.g., the at least one anchor UE 104-3) may transmit the location measurement data to the server UE 104-2 before the response time expires.
  • the server UE 104-2 may perform 252 the location calculation of the target UE 104-1 based on the received location measurement data and the previously transmitted request for the location calculation result and thus obtain the location calculation result of the target UE 104-1.
  • the request 248 for the location calculation result may include a configuration for a SL-PRS measurement.
  • the request 248 for the location calculation result may include a configuration for a SL-PRS calculation result report.
  • the request 248 may include an indication of a report mode of the location calculation result and/or an indication of a response time for the location calculation result.
  • the server UE 104-2 may transmit the information associated with the location calculation result to the network device 206-1 via a ProvideLocationInformation message before the response time expires.
  • the information associated with the location calculation result may include the location calculation result.
  • the server UE 104-2 may perform a calculation result evaluation before transmitting the information associated with the location calculation result to the network device 206-1.
  • the request for the location calculation result may further include a QoS requirement.
  • the server UE 104-2 may evaluate whether the calculated location result can satisfy the QoS requirement and obtain the information associated with the location calculation result based on the evaluation. If the location calculation result satisfies the QoS requirement, the information associated with the location calculation result may include the location calculation result. If the location calculation result does not satisfy the QoS requirement, the information associated with the location calculation result may include an indication that the location calculation result does not satisfy the QoS requirement.
  • the network device 206-1 may initiate certain procedures to obtain the location information of the target UE 104-1. For example, the network device 206-1 may transmit, to the server UE 104-2, an updated request for the location calculation result of the target UE 104-1.
  • the updated request may include an updated QoS requirement associated with the positioning procedure.
  • the updated request may include an updated QoS requirement associated with the positioning procedure and an updated configuration for the SL-PRS measurement.
  • the server UE 104-2 may perform the location calculation and evaluation based on updated request.
  • the network device 206-1 may transmit an updated configuration for the SL-PRS measurement to at least one of the target UE 104-1 or at least one anchor UE 104-3.
  • the involved UEs may perform the SL-PRS measurement based on the updated configuration.
  • the network device 206-1 may terminate the positioning procedure and start a further positioning procedure of the target UE 104-1.
  • the network device 206-1 may trigger a reselection of the server UE for the positioning procedure. Alternatively or additionally, if the location calculation result does not satisfy the QoS requirement, the network device 206-1 may trigger a reselection of at least one anchor UE for the positioning procedure.
  • server UE-involved positioning are described in general terms.
  • server UE-involved positioning will be further detailed in regard to various specific aspects.
  • the first specific aspect of the server UE-involved positioning is how to determine the server UE for a LMF-independent SL positioning. If the server UE needs to obtain measurement results from the anchor UEs and/or provide assistance data to the anchor UEs, the connection between the server UE and the anchor UEs needs to be established directly or indirectly. Since both the server UE and the anchor UEs need to be around the target UE, it’s reasonable for the target UE to obtain candidate server UEs and anchor UEs firstly by UE discovery procedure.
  • the target UE may determine the server UE and candidate anchor UEs firstly, and the server UE may determine anchor UEs which can be discovered by itself. For example, after obtaining candidate server UEs and candidate anchor UEs by discovery, the target UE may first select a server UE, and send the information of candidate anchor UEs (e.g., UE ID, UE role, UE capability, etc. ) to the server UE.
  • the server UE may discover candidate anchor UEs and select anchor UEs based on the discovery results, link quality with candidate anchor UEs (e.g., RSRP of discovery channel) , a QoS requirement, etc.
  • the server UE may provide the information of selected anchor UEs to the target UE.
  • FIG. 3A illustrates an example signaling chart of a communication process 300A that supports an anchor UE selection at a server UE in accordance with some example embodiments of the present disclosure. It is noted that the process 300A can be deemed as a more specific example of the process 200A. For the purpose of discussion, the process 300A will be described with reference to FIGS. 1A-1C.
  • the process 300A may involve the target UE 104-1 and the server UE 104-2 as illustrated in FIGS. 1B-1C and a candidate anchor UE 104-3’. Although only one candidate anchor UE is shown in FIG. 3B, there may be multiple candidate anchor UEs. For example, the anchor UEs 104-3 as illustrated in FIGS.
  • 1B-1C may be selected from the multiple candidate anchor UEs. It is to be understood that the steps and the order of the steps in FIG. 3A are merely for illustration, and not for limitation. It is to be understood that process 300A may further include additional blocks not shown and/or omit some shown blocks, and the scope of the present disclosure is not limited in this regard.
  • server UE is illustrated as a separate entity, it is only for easy of illustration. In some embodiments, the server UE may be located in target UE or one of the anchor UEs, or a separate entity.
  • the target UE 104-1 may discover candidate server UEs and candidate anchor UEs. Those candidate server UEs and candidate anchor UEs may transmit discovery messages to the target UE 104-1, indicating respective UE roles.
  • the target UE 104-1 may determine a server UE from the candidate server UEs based on the information included in the discovery message. The server UE may be determined considering various factors, such as a computing ability, a link quality with the network device, a link quality with the target UE, etc.
  • the target UE 104-1 may transmit a request message 308 for anchor UE information to the server UE 104-2.
  • the request message 308 may include an indication of a server UE role, the responsibilities of the server UE (e.g., location calculation, anchor UE selection, etc. ) , the information of candidate anchor UEs discovered by the target UE 104-1 (e.g., identities, roles and capabilities of the candidate anchor UEs) and the QoS requirement of positioning request.
  • the server UE 104-2 may discover candidate anchor UEs provided by the target UE 104-1 and measure the link quality (e.g., SD-RSRP) with the candidate anchor UEs.
  • the server UE 104-2 may select anchor UEs based on the discovery results, measured link quality and the QoS requirement.
  • the server UE 104-2 may transmit a response message 316 including the anchor UE information to the target UE 104-1.
  • the response message 316 may at least include the identities of selected anchor UEs.
  • the target UE may determine a server UE and candidate anchor UEs firstly, and the server UE may determine anchor UEs which can be discovered by itself. In this way, the server UE and anchor UEs for the server UE-involved positioning may be determined. Since the direct connection between anchor UEs and server UE is considered, the anchor UE may directly transmit the location measurement data associated with the target UE during a positioning procedure, thus avoiding unnecessary signaling overhead and latency.
  • the target UE may first determine anchor UEs and then determine server UE based on the link quality responses from candidate server UEs. For example, after obtaining candidate server UEs and candidate anchor UEs by discovery, the target UE may first select anchor UEs, and request each candidate server UE to provide the link quality with the selected anchor UEs. After discovery, the candidate server UEs may response the link quality with the selected anchor UEs (e.g., RSRP of discovery channel) to the target UE. Then the target UE may determine a server UE based on the feedback from candidate server UEs.
  • the selected anchor UEs e.g., RSRP of discovery channel
  • FIG. 3B illustrates an example signaling chart of a communication process 300B that supports a server UE selection based on link qualities in accordance with some example embodiments of the present disclosure. It is noted that the process 300B can be deemed as a more specific example of the process 200B. For the purpose of discussion, the process 300B will be described with reference to FIGS. 1A-1C.
  • the process 300B may involve the target UE 104-1 and the anchors UE 104-3 as illustrated in FIGS. 1B-1C and a candidate server UE 104-2’. Although only one candidate server UE is shown in FIG. 2B, there may be multiple candidate server UEs. For example, the server UE 104-2 as illustrated in FIGS.
  • 1B-1C may be selected from the multiple candidate server UEs. It is to be understood that the steps and the order of the steps in FIG. 3B are merely for illustration, and not for limitation. It is to be understood that process 300B may further include additional blocks not shown and/or omit some shown blocks, and the scope of the present disclosure is not limited in this regard.
  • the candidate server UE is illustrated as a separate entity, it is only for easy of illustration. In some embodiments, the server UE may be located in target UE or one of the anchor UEs, or a separate entity.
  • the target UE 104-1 may discover candidate server UEs and candidate anchor UEs. Those candidate server UEs and candidate anchor UEs may transmit discovery messages to the target UE 104-1, indicating respective UE roles.
  • the target UE 104-1 may determine anchor UEs 104-3 from the candidate anchor UEs based on the information included in the discovery message. The anchor UEs may be determined considering various factors, such as a link quality with the target UE, etc.
  • the target UE 104-1 may transmit a request 328 to each candidate server UE 104-2’ to provide link quality information (e.g., SD-RSRP) with the anchor UEs 104-3 and optionally other information (e.g., capabilities of the candidate server UE 104-2’ for the SL positioning) .
  • the request 328 may include the information of anchor UEs 104-3 (e.g., the identity of anchor UEs 104-3) and the indication of required information (e.g., SD-RSRP between the candidate server UE and the anchor UEs, capability of the anchor UEs, etc. ) .
  • the request 328 may be carried via discovery message since the target UE 104-1 has not established a unicast connection with the candidate server UEs.
  • the candidate server UE 104-2’ may discover anchor UEs provided by the target UE 104-1 and measure the link quality (e.g., SD-RSRP) with the anchor UEs.
  • the candidate server UE 104-2’ may transmit a response 334 of the link quality with anchor UEs (and other requested information) to the target UE 104-1.
  • the target UE 104-1 may determine a server UE based on the responses of multiple candidate server UEs.
  • the target UE 104-1 may transmit a server UE role indication 340 and associated responsibilities (e.g., location calculation, providing necessary configuration to involved UEs, etc. ) to the selected server UE.
  • the target UE may first determine anchor UEs and sends the anchor UEs information to the candidate server UE, then the target UE may determine a server UE based on the link quality responses between candidate server UEs and the anchor UEs. In this way, the server UE and anchor UEs for the server UE-involved positioning may be determined. Since the direct connection between anchor UEs and server UE is considered, the anchor UE may directly transmit the location measurement data associated with the target UE during a positioning procedure, thus avoiding unnecessary signaling overhead and latency.
  • the target may determine anchor UEs and server UE without considering the direct connection between anchor UEs and server UE.
  • the server UE communicates with anchor UEs via the target UE.
  • the second specific aspect of the server UE-involved positioning is how to determine the server UE with LMF involvement.
  • the LMF may decide to utilize a server UE to calculate the positioning result. Since the server UE needs to be around the target UE, it’s reasonable for the target UE to discover candidate server UEs firstly.
  • the specific procedures of server UE determination with LMF involvement need to be designed.
  • the LMF may request the target UE to select the server UE with some criteria. For example, upon deciding that a server UE is needed, the LMF may send a server UE selection request to the target UE along with other necessary information (e.g., selection criteria) . The target UE may select a server UE based on the discovery result and selection criteria, and then response the information of selected server UE to the LMF. Additionally, the target UE may also send the information of selected server UE to the anchor UEs if LMF requests.
  • the target UE may send a server UE selection request to the target UE along with other necessary information (e.g., selection criteria) .
  • the target UE may select a server UE based on the discovery result and selection criteria, and then response the information of selected server UE to the LMF. Additionally, the target UE may also send the information of selected server UE to the anchor UEs if LMF requests.
  • the LMF may request the target UE to discover and report candidate server UEs information, and the LMF may select the server UE based on the information of candidate server UEs.
  • the LMF may request candidate server UE information from the target UE along with the other necessary information, such as computing abilities of the candidate server UEs, network coverage, connection of the candidate server UEs with the involved UEs (e.g., the target UE, or the anchor UEs) , etc.
  • the target UE may response the LMF with the information of candidate server UEs.
  • the LMF may select the server UE based on the feedback from the target UE.
  • the third specific aspect of the server UE-involved positioning is which assistance data need to be transferred among different entities in the case of both LMF and sever UE work.
  • other involved UEs especially the UEs measuring the SL PRS
  • the associated data e.g., the measurement report
  • the configuration can be provided by the LMF or the server UE based on the responsibilities of the server UE.
  • the assistance data from the LMF to the server UE may include an indication of a server UE role and associated responsibilities (e.g., result calculation, providing necessary configuration information to the involved UEs, etc.
  • the assistance data from the LMF to the server UE may also include necessary information used for calculation and optionally a configuration (e.g., the positioning method, the identity of UEs transmitting/measuring SL-PRS, the location information and associated accuracy for anchor UE (s) , etc. ) .
  • the assistance data from the LMF to the server UE may also include a SL PRS configuration, a measurement configuration and a response time of other involved UEs, which need to be forwarded by the server UE to other involved UEs.
  • the server UE may transmit, to the target UE and/or anchor UEs, assistance data including an indication of server UE information and responsibilities.
  • the assistance data from the server UE to the target UE and/or anchor UEs may also include a SL PRS configuration, a measurement configuration, a response time, a report mode, etc.
  • the LMF may transmit, to the target UE and/or anchor UEs, assistance data including a SL PRS configuration, a measurement configuration, a response time, a report mode, etc.
  • assistance data from the LMF to the target UE and/or anchor UEs may also include an indication of server UE information and responsibilities.
  • the fourth specific aspect of the server UE-involved positioning is how to obtain location information in the case that both LMF and server UE work.
  • the LMF may request a positioning result from the server UE via RequestLocationInformation message.
  • the message may include the QoS requirement, response time, and optionally measurement configuration, etc.
  • the server UE may request measurement data from other involved UEs via RequestLocationInformation message.
  • the message may include the measurement configuration, response time, report mode, etc., which may be provided by LMF or determined by server UE itself. Based on the configuration, the involved UEs may transmit a SL-PRS or measure the SL-PRS.
  • the involved UEs measuring the SL-PRS may response the measurement data to the server UE via ProvideLocationInformation message before the response time expired.
  • the server UE may calculate the positioning result based on the received measurement data.
  • the server UE may response the positioning result to the LMF via ProvideLocationInformation message before the response time expired.
  • the fifth specific aspect of the server UE-involved positioning is what is the action if the positioning result cannot satisfy the QoS requirement.
  • the server UE may evaluate whether the calculated positioning result can satisfy the QoS requirement. If the results meet the QoS requirement, the server UE may send the results to the LMF. Otherwise, the server UE may send an indication indicating the bad result to the LMF.
  • the server UE may send the result to the LMF without evaluation.
  • the LMF may need to evaluate whether the positioning result can meet the QoS requirement. If the LMF receives the bad-result indication from the server UE or if the LMF evaluates that the positioning result cannot meet the QoS requirement, some procedures may be initiated. For example, the LMF may request a positioning result from the server UE again, and the LMF may provide updated measurement configuration/QoS requirement to the involved UEs via server UE or directly. In another example, the LMF may end the ongoing session and start a new one. In a further example, the LMF may trigger a server UE reselection and/or an anchor UE reselection.
  • FIG. 4 illustrates an example signaling chart of a communication process 400 that supports positioning of a target UE involving both a server UE and a LMF in accordance with some example embodiments of the present disclosure. It is noted that the process 400 can be deemed as a more specific example of the process 200C. For the purpose of discussion, the process 400 will be described with reference to FIGS. 1A-1C.
  • the process 400 may involve the target UE 104-1, the server UE 104-2 and the anchor UE 104-3 as illustrated in FIGS. 1B-1C and a LMF 106-1. Although only one anchor UE is shown in FIG. 4, there may be multiple anchor UEs for the positioning procedure of the target UE 104-1.
  • the LMF 106-1 may be a specific example of the network device 206-1 in FIGS. 1B-1C. It is to be understood that the steps and the order of the steps in FIG. 4 are merely for illustration, and not for limitation. It is to be understood that process 400 may further include additional blocks not shown and/or omit some shown blocks, and the scope of the present disclosure is not limited in this regard.
  • server UE is illustrated as a separate entity, it is only for easy of illustration. In some embodiments, the server UE may be located in target UE or one of the anchor UEs, or a separate entity.
  • the LMF 106-1 may determine that a server UE is needed. The determination may be triggered in various manners. In an implementation of the triggering, at step 412, the LMF 106-1 may receive anchor UEs information or candidate anchor UEs information from the target UE 104-1. The LMF 106-1 may determine the anchor UEs based on the candidate anchor UEs information. In some cases, upon receiving the anchor UEs information or determining the anchor UEs, the LMF 106-1 may find that it’s a partial coverage scenario when at least one OOC anchor UE or an OOC target UE measure SL-PRS.
  • the LMF 106-1 may receive the UE capability information from the target UE 104-1.
  • the LMF 106-1 may receive the UE capability information from the anchor UEs 104-3.
  • the LMF 106-1 may find e.g., high mobility of involved UEs, which may result in poor transport performance or large latency.
  • the LMF 106-1 may receive the connection measurement results from the target UE 104-1. Alternatively or additionally, at step 416-2, the LMF 106-1 may receive the connection measurement results from the anchor UEs 104-3. In some cases, upon receiving measurement results, the LMF 106-1 may find that at least one of the SL-PRS measuring UEs has poor connection with network.
  • the LMF may determine that a server UE is needed.
  • the LMF 106-1 or the target UE 104-1 may determine a server UE for the positioning of the target UE 104-1.
  • the LMF 106-1 may request the target UE 104-1 to discover and report server UE information or candidate server UEs information. If server UE information is requested at step 422, the message from the LMF 106-1 to the target UE 104-1 may include at least one selection criterion (e.g., a computing ability criterion, a criterion of supported positioning methods, a network coverage criterion, a criterion associated with the connection of the server UE with the involved UEs, etc. ) .
  • selection criterion e.g., a computing ability criterion, a criterion of supported positioning methods, a network coverage criterion, a criterion associated with the connection of the server UE with the involved UEs, etc.
  • the message from the LMF 106-1 to the target UE 104-1 may indicate the required information or candidate server UEs that the target UE 104-1 needs to response (e.g., the computing abilities of the candidate server UEs, the supported positioning methods of the candidate server UEs, network coverages of the candidate server UEs, connections of the candidate server UEs with the involved UEs, etc. ) .
  • the required information or candidate server UEs that the target UE 104-1 needs to response e.g., the computing abilities of the candidate server UEs, the supported positioning methods of the candidate server UEs, network coverages of the candidate server UEs, connections of the candidate server UEs with the involved UEs, etc.
  • the process 400 may proceed to step 424.
  • the target UE 104-1 may determine a server UE 104-1 based on the selected criteria provided from the LMF 106-1. In order to guarantee the connection between the server UE and the anchor UEs, operations of steps 326-336 in FIG. 3B may be performed, and detailed description thereof will be omitted.
  • the target UE 104-1 may response the server UE information to the LMF 106-1. The response message at least includes the identity of server UE.
  • the target UE 104-1 may send the information of selected server UE 104-2 to the anchor UEs 104-3 if the LMF 106-1 requests to do so. In this way, the anchor UEs 104-3 would be aware of the existence of the server UE 104-2 and will report location measurement data to the server UE 104-2.
  • the target UE 104-1 may obtain the requested information for candidate server UE (e.g., the computing abilities of the candidate server UEs, the supported positioning methods of the candidate server UEs, network coverages of the candidate server UEs, connections of the candidate server UEs with the involved UEs, etc. ) .
  • candidate server UE e.g., the computing abilities of the candidate server UEs, the supported positioning methods of the candidate server UEs, network coverages of the candidate server UEs, connections of the candidate server UEs with the involved UEs, etc.
  • the target UE 104-1 may response the candidate server UEs information to the LMF 106-1.
  • the LMF 106-1 may determine a server UE 104-2 based on the information of candidate server UEs provided by the target UE 104-1.
  • the LMF 106-1 may obtain the UE capability of the anchor UEs 104-3, the target UE 104-1 and the server UE 104-2.
  • the server UE 104-2 may obtain the UE capability of the anchor UEs 104-3 and the target UE 104-1.
  • the LMF 106-1 or the server UE 104-2 may send assistance data to the target UE 104-1 and/or the anchor UEs 104-3.
  • the LMF 106-1 may send assistance data to the server UE 104-2.
  • the LMF 106-1 may indicate the server UE role and responsibilities (e.g., a location result calculation, providing necessary configuration information to the involved UEs, etc. ) to the server UE 104-2.
  • the LMF 106-1 may send some necessary information used for calculation and optionally configuration to the server UE 104-2 (e.g., the positioning method, the identity of UEs transmitting SL-PRS, the identity of UEs measuring SL-PRS, the location information and associated accuracy for anchor UE (s) , the QoS requirement, etc. ) .
  • the LMF 106-1 may also provide the SL-PRS configuration, measurement configuration and response time of other involved UEs (e.g., the target UE 104-1, the anchor UEs 104-3) to the server UE 104-2 and request the server UE 104-2 to forward it to the involved UEs.
  • the response time may be associated with reporting the measurement data from the involved UEs to the server UE 104-2.
  • the LMF 106-1 may inform the target UE 104-1 or the anchor UEs 104-3 the SL-PRS configuration, measurement configuration, report mode, and the information of server UE (e.g., the identity of server UE and its associated responsibilities) via a broadcast or dedicated signaling.
  • the server UE 104-2 may inform other involved UEs its role and responsibilities via a broadcast or dedicated signaling, and send a SL-PRS configuration to the specific UEs.
  • the LMF 106-1 and the server UE 104-2 may request the location information of the target UE 104-1.
  • the LMF 106-1 may request the positioning result of the target UE 104-1 from the server UE 104-2 via a RequestLocationInformation message.
  • the message may also include the QoS requirement, measurement configuration and response time for specific UEs, etc.
  • the server UE 104-2 may request measurement data from other involved UEs via a RequestLocationInformation message.
  • the message may also include the measurement configuration, report mode and response time associated with the measurement report, which may be provided by the LMF 106-1 or determined by the server UE 104-2 itself.
  • one of the target UE 104-1 and the anchor UEs 104-3 may transmit a SL-PRS and the other one may measure the SL-PRS based on the configuration.
  • the involved UE (s) measuring the SL-PRS may report the measurement data to the server UE 104-2 via a ProvideLocationInformation message before the response time associated with the measurement report expired.
  • the server UE 104-2 may calculate the positioning result based on the received measurement data.
  • the server UE 104-2 may report the positioning result to the LMF 106-1 via a ProvideLocationInformation message before the response time associated with the location information expired.
  • the LMF 106-1 may have provided the QoS requirement for positioning service to the server UE 104-2.
  • the server UE 104-2 may evaluate whether the calculated positioning result can satisfy the QoS requirement. If the results meet the requirement, the server UE 104-2 may send the results to the LMF 106-1. Otherwise, e.g., if the quality of positioning result does not meet the QoS requirement, the server UE 104-2 may send a bad-result indicator to the LMF 106-1.
  • the LMF 106-1 may have not provided the QoS requirement for positioning service to the server UE 104-2.
  • the server UE may send the positioning result to the LMF 106-1 without evaluation.
  • the LMF 106-1 may evaluate whether the positioning result can meet the QoS requirement. If the LMF 106-1 is not satisfied with the received positioning result (e.g., the quality of positioning result does not meet the QoS requirement) or receives the bad-result indicator from the server UE 104-2, the LMF 106-1 may initiate a specific procedure. For example, the LMF 106-1 may request a positioning result from the server UE 104-2 again, and the LMF 106-1 may provide updated SL-PRS configuration, measurement configuration and QoS requirement to the involved UEs via the server UE 104-2 or directly. Then the steps 464-1/464-2 to 468 may be repeated. In another example, the LMF 106-1 may end the ongoing session and start a new one. In a further example, the LMF 106-1 may trigger a server UE reselection and/or an anchor UE reselection.
  • the LMF 106-1 may initiate a server UE reselection and/or an
  • the positioning QoS may be guaranteed and signaling overhead and latency may be avoided, especially for emergent applications.
  • FIG. 5 illustrates an example of a device 500 that supports positioning of a target UE in accordance with aspects of the present disclosure.
  • the device 500 may be an example of a target UE 104-1 as described herein.
  • the device 500 may support wireless communication with one or more network entities 102, UEs 104, core networks 106 or any combination thereof.
  • the device 500 may include components for bi-directional communications including components for transmitting and receiving communications, such as a processor 502, a memory 504, a transceiver 506, and, optionally, an I/O controller 508. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces (e.g., buses) .
  • the processor 502, the memory 504, the transceiver 506, or various combinations thereof or various components thereof may be examples of means for performing various aspects of the present disclosure as described herein.
  • the processor 502, the memory 504, the transceiver 506, or various combinations or components thereof may support a method for performing one or more of the operations described herein.
  • the processor 502, the memory 504, the transceiver 506, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry) .
  • the hardware may include a processor, a digital signal processor (DSP) , an application-specific integrated circuit (ASIC) , a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting a means for performing the functions described in the present disclosure.
  • the processor 502 and the memory 504 coupled with the processor 502 may be configured to perform one or more of the functions described herein (e.g., executing, by the processor 502, instructions stored in the memory 504) .
  • the processor 502 may support wireless communication at the device 500 in accordance with examples as disclosed herein.
  • the processor 502 may be configured to operable to support a means for determining, for a positioning procedure in which the UE is a target UE, a server UE from a set of candidate server UEs or at least one anchor UE from a set of candidate anchor UEs and a means for performing one of the following (i) or (ii) : (i) in the case that the server UE is determined, transmitting, via the transceiver to the server UE, a request for anchor UE information indicative of at least one anchor UE among the set of candidate anchor UEs; and receiving, via the transceiver, the anchor UE information from the server UE; (ii) in the case that the at least one anchor UE is determined, transmitting, via the transceiver to the set of candidate server UEs, a request for link quality information indicative of link qualities between the set of candidate server UEs and the at least one anchor UE;
  • the processor 502 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof) .
  • the processor 502 may be configured to operate a memory array using a memory controller.
  • a memory controller may be integrated into the processor 502.
  • the processor 502 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 504) to cause the device 500 to perform various functions of the present disclosure.
  • the memory 504 may include random access memory (RAM) and read-only memory (ROM) .
  • the memory 504 may store computer-readable, computer-executable code including instructions that, when executed by the processor 502 cause the device 500 to perform various functions described herein.
  • the code may be stored in a non-transitory computer-readable medium such as system memory or another type of memory.
  • the code may not be directly executable by the processor 502 but may cause a computer (e.g., when compiled and executed) to perform functions described herein.
  • the memory 504 may include, among other things, a basic I/O system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.
  • BIOS basic I/O system
  • the I/O controller 508 may manage input and output signals for the device 500.
  • the I/O controller 508 may also manage peripherals not integrated into the device M02.
  • the I/O controller 508 may represent a physical connection or port to an external peripheral.
  • the I/O controller 508 may utilize an operating system such as or another known operating system.
  • the I/O controller 508 may be implemented as part of a processor, such as the processor 506.
  • a user may interact with the device 500 via the I/O controller 508 or via hardware components controlled by the I/O controller 508.
  • the device 500 may include a single antenna 510. However, in some other implementations, the device 500 may have more than one antenna 510 (i.e., multiple antennas) , including multiple antenna panels or antenna arrays, which may be capable of concurrently transmitting or receiving multiple wireless transmissions.
  • the transceiver 506 may communicate bi-directionally, via the one or more antennas 510, wired, or wireless links as described herein.
  • the transceiver 506 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver.
  • the transceiver 506 may also include a modem to modulate the packets, to provide the modulated packets to one or more antennas 510 for transmission, and to demodulate packets received from the one or more antennas 510.
  • the transceiver 506 may include one or more transmit chains, one or more receive chains, or a combination thereof.
  • a transmit chain may be configured to generate and transmit signals (e.g., control information, data, packets) .
  • the transmit chain may include at least one modulator for modulating data onto a carrier signal, preparing the signal for transmission over a wireless medium.
  • the at least one modulator may be configured to support one or more techniques such as amplitude modulation (AM) , frequency modulation (FM) , or digital modulation schemes like phase-shift keying (PSK) or quadrature amplitude modulation (QAM) .
  • the transmit chain may also include at least one power amplifier configured to amplify the modulated signal to an appropriate power level suitable for transmission over the wireless medium.
  • the transmit chain may also include one or more antennas 510 for transmitting the amplified signal into the air or wireless medium.
  • a receive chain may be configured to receive signals (e.g., control information, data, packets) over a wireless medium.
  • the receive chain may include one or more antennas 510 for receive the signal over the air or wireless medium.
  • the receive chain may include at least one amplifier (e.g., a low-noise amplifier (LNA) ) configured to amplify the received signal.
  • the receive chain may include at least one demodulator configured to demodulate the receive signal and obtain the transmitted data by reversing the modulation technique applied during transmission of the signal.
  • the receive chain may include at least one decoder for decoding the processing the demodulated signal to receive the transmitted data.
  • FIG. 6 illustrates an example of a device 600 that supports positioning of a target UE in accordance with aspects of the present disclosure.
  • the device 600 may be an example of a server UE 104-2 or a candidate server UE 104-2’ as described herein.
  • the device 600 may support wireless communication with one or more network entities 102, UEs 104, core networks 106 or any combination thereof.
  • the device 600 may include components for bi-directional communications including components for transmitting and receiving communications, such as a processor 602, a memory 604, a transceiver 606, and, optionally, an I/O controller 608. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces (e.g., buses) .
  • the processor 602, the memory 604, the transceiver 606, or various combinations thereof or various components thereof may be examples of means for performing various aspects of the present disclosure as described herein.
  • the processor 602, the memory 604, the transceiver 606, or various combinations or components thereof may support a method for performing one or more of the operations described herein.
  • the processor 602, the memory 604, the transceiver 606, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry) .
  • the hardware may include a processor, a digital signal processor (DSP) , an application-specific integrated circuit (ASIC) , a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting a means for performing the functions described in the present disclosure.
  • the processor 602 and the memory 604 coupled with the processor 602 may be configured to perform one or more of the functions described herein (e.g., executing, by the processor 602, instructions stored in the memory 604) .
  • the processor 602 may support wireless communication at the device 600 in accordance with examples as disclosed herein.
  • the processor 602 may be configured to operable to support a means for receiving, via the transceiver from a target user equipment (UE) in a positioning procedure, a request for anchor UE information associated with a set of candidate anchor UEs for the positioning procedure or a request for link quality information associated with at least one anchor UE for the positioning procedure; and a means for performing one of the following (i) or (ii) : (i) in the case that the request for the anchor UE information is received, selecting at least one anchor UE from the set of candidate anchor UEs; and transmitting, via the transceiver to the target UE, the anchor UE information indicative of the at least one anchor UE; (ii) in the case that the request for the link quality information is received, determining at least one link quality between the UE and the at least one anchor UE; and transmitting, via the transceiver to the target UE, the link quality information indicative of the
  • the processor 602 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof) .
  • the processor 602 may be configured to operate a memory array using a memory controller.
  • a memory controller may be integrated into the processor 602.
  • the processor 602 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 604) to cause the device 600 to perform various functions of the present disclosure.
  • the memory 604 may include random access memory (RAM) and read-only memory (ROM) .
  • the memory 604 may store computer-readable, computer-executable code including instructions that, when executed by the processor 602 cause the device 600 to perform various functions described herein.
  • the code may be stored in a non-transitory computer-readable medium such as system memory or another type of memory.
  • the code may not be directly executable by the processor 602 but may cause a computer (e.g., when compiled and executed) to perform functions described herein.
  • the memory 604 may include, among other things, a basic I/O system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.
  • BIOS basic I/O system
  • the I/O controller 608 may manage input and output signals for the device 600.
  • the I/O controller 608 may also manage peripherals not integrated into the device M02.
  • the I/O controller 608 may represent a physical connection or port to an external peripheral.
  • the I/O controller 608 may utilize an operating system such as or another known operating system.
  • the I/O controller 608 may be implemented as part of a processor, such as the processor 606.
  • a user may interact with the device 600 via the I/O controller 608 or via hardware components controlled by the I/O controller 608.
  • the device 600 may include a single antenna 610. However, in some other implementations, the device 600 may have more than one antenna 610 (i.e., multiple antennas) , including multiple antenna panels or antenna arrays, which may be capable of concurrently transmitting or receiving multiple wireless transmissions.
  • the transceiver 606 may communicate bi-directionally, via the one or more antennas 610, wired, or wireless links as described herein.
  • the transceiver 606 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver.
  • the transceiver 606 may also include a modem to modulate the packets, to provide the modulated packets to one or more antennas 610 for transmission, and to demodulate packets received from the one or more antennas 610.
  • the transceiver 606 may include one or more transmit chains, one or more receive chains, or a combination thereof.
  • a transmit chain may be configured to generate and transmit signals (e.g., control information, data, packets) .
  • the transmit chain may include at least one modulator for modulating data onto a carrier signal, preparing the signal for transmission over a wireless medium.
  • the at least one modulator may be configured to support one or more techniques such as amplitude modulation (AM) , frequency modulation (FM) , or digital modulation schemes like phase-shift keying (PSK) or quadrature amplitude modulation (QAM) .
  • the transmit chain may also include at least one power amplifier configured to amplify the modulated signal to an appropriate power level suitable for transmission over the wireless medium.
  • the transmit chain may also include one or more antennas 610 for transmitting the amplified signal into the air or wireless medium.
  • a receive chain may be configured to receive signals (e.g., control information, data, packets) over a wireless medium.
  • the receive chain may include one or more antennas 610 for receive the signal over the air or wireless medium.
  • the receive chain may include at least one amplifier (e.g., a low-noise amplifier (LNA) ) configured to amplify the received signal.
  • the receive chain may include at least one demodulator configured to demodulate the receive signal and obtain the transmitted data by reversing the modulation technique applied during transmission of the signal.
  • the receive chain may include at least one decoder for decoding the processing the demodulated signal to receive the transmitted data.
  • FIG. 7 illustrates an example of a device 700 that supports positioning of a target UE in accordance with aspects of the present disclosure.
  • the device 700 may be an example of a network device 206-1 or a LMF 106-1 as described herein.
  • the device 700 may support wireless communication with one or more network entities 102, UEs 104, core networks 106 or any combination thereof.
  • the device 700 may include components for bi-directional communications including components for transmitting and receiving communications, such as a processor 702, a memory 704, a transceiver 706, and, optionally, an I/O controller 708. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces (e.g., buses) .
  • the processor 702, the memory 704, the transceiver 706, or various combinations thereof or various components thereof may be examples of means for performing various aspects of the present disclosure as described herein.
  • the processor 702, the memory 704, the transceiver 706, or various combinations or components thereof may support a method for performing one or more of the operations described herein.
  • the processor 702, the memory 704, the transceiver 706, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry) .
  • the hardware may include a processor, a digital signal processor (DSP) , an application-specific integrated circuit (ASIC) , a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting a means for performing the functions described in the present disclosure.
  • the processor 702 and the memory 704 coupled with the processor 702 may be configured to perform one or more of the functions described herein (e.g., executing, by the processor 702, instructions stored in the memory 704) .
  • the processor 702 may support wireless communication at the device 700 in accordance with examples as disclosed herein.
  • the processor 702 may be configured to operable to support a means for determining that a server UE is to be determined for a positioning procedure of a target UE; a means for determining the server UE for the positioning procedure; a means for transmitting, via the transceiver to the server UE, a request for a location calculation result of the target UE; and a means for receiving, via the transceiver from the server UE, information associated with the location calculation result.
  • the processor 702 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof) .
  • the processor 702 may be configured to operate a memory array using a memory controller.
  • a memory controller may be integrated into the processor 702.
  • the processor 702 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 704) to cause the device 700 to perform various functions of the present disclosure.
  • the memory 704 may include random access memory (RAM) and read-only memory (ROM) .
  • the memory 704 may store computer-readable, computer-executable code including instructions that, when executed by the processor 702 cause the device 700 to perform various functions described herein.
  • the code may be stored in a non-transitory computer-readable medium such as system memory or another type of memory.
  • the code may not be directly executable by the processor 702 but may cause a computer (e.g., when compiled and executed) to perform functions described herein.
  • the memory 704 may include, among other things, a basic I/O system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.
  • BIOS basic I/O system
  • the I/O controller 708 may manage input and output signals for the device 700.
  • the I/O controller 708 may also manage peripherals not integrated into the device M02.
  • the I/O controller 708 may represent a physical connection or port to an external peripheral.
  • the I/O controller 708 may utilize an operating system such as or another known operating system.
  • the I/O controller 708 may be implemented as part of a processor, such as the processor 706.
  • a user may interact with the device 700 via the I/O controller 708 or via hardware components controlled by the I/O controller 708.
  • the device 700 may include a single antenna 710. However, in some other implementations, the device 700 may have more than one antenna 710 (i.e., multiple antennas) , including multiple antenna panels or antenna arrays, which may be capable of concurrently transmitting or receiving multiple wireless transmissions.
  • the transceiver 706 may communicate bi-directionally, via the one or more antennas 710, wired, or wireless links as described herein.
  • the transceiver 706 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver.
  • the transceiver 706 may also include a modem to modulate the packets, to provide the modulated packets to one or more antennas 710 for transmission, and to demodulate packets received from the one or more antennas 710.
  • the transceiver 706 may include one or more transmit chains, one or more receive chains, or a combination thereof.
  • a transmit chain may be configured to generate and transmit signals (e.g., control information, data, packets) .
  • the transmit chain may include at least one modulator for modulating data onto a carrier signal, preparing the signal for transmission over a wireless medium.
  • the at least one modulator may be configured to support one or more techniques such as amplitude modulation (AM) , frequency modulation (FM) , or digital modulation schemes like phase-shift keying (PSK) or quadrature amplitude modulation (QAM) .
  • the transmit chain may also include at least one power amplifier configured to amplify the modulated signal to an appropriate power level suitable for transmission over the wireless medium.
  • the transmit chain may also include one or more antennas 710 for transmitting the amplified signal into the air or wireless medium.
  • a receive chain may be configured to receive signals (e.g., control information, data, packets) over a wireless medium.
  • the receive chain may include one or more antennas 710 for receive the signal over the air or wireless medium.
  • the receive chain may include at least one amplifier (e.g., a low-noise amplifier (LNA) ) configured to amplify the received signal.
  • the receive chain may include at least one demodulator configured to demodulate the receive signal and obtain the transmitted data by reversing the modulation technique applied during transmission of the signal.
  • the receive chain may include at least one decoder for decoding the processing the demodulated signal to receive the transmitted data.
  • FIG. 8 illustrates an example of a device 800 that supports positioning of a target UE in accordance with aspects of the present disclosure.
  • the device 800 may be an example of an anchor UE 104-3 as described herein.
  • the device 800 may support wireless communication with one or more network entities 102, UEs 104, core networks 106 or any combination thereof.
  • the device 800 may include components for bi-directional communications including components for transmitting and receiving communications, such as a processor 802, a memory 804, a transceiver 806, and, optionally, an I/O controller 808. These components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces (e.g., buses) .
  • interfaces e.g., buses
  • the processor 802, the memory 804, the transceiver 806, or various combinations thereof or various components thereof may be examples of means for performing various aspects of the present disclosure as described herein.
  • the processor 802, the memory 804, the transceiver 806, or various combinations or components thereof may support a method for performing one or more of the operations described herein.
  • the processor 802, the memory 804, the transceiver 806, or various combinations or components thereof may be implemented in hardware (e.g., in communications management circuitry) .
  • the hardware may include a processor, a digital signal processor (DSP) , an application-specific integrated circuit (ASIC) , a field-programmable gate array (FPGA) or other programmable logic device, a discrete gate or transistor logic, discrete hardware components, or any combination thereof configured as or otherwise supporting a means for performing the functions described in the present disclosure.
  • the processor 802 and the memory 804 coupled with the processor 802 may be configured to perform one or more of the functions described herein (e.g., executing, by the processor 802, instructions stored in the memory 804) .
  • the processor 802 may support wireless communication at the device 800 in accordance with examples as disclosed herein.
  • the processor 802 may be configured to operable to support a means for receiving, via the transceiver, first assistance data for a positioning procedure from a network device or a server UE in the positioning procedure, wherein the UE is an anchor UE in the positioning procedure; a means for performing a location measurement of a target UE in the positioning procedure to obtain location measurement data associated with the target UE; and a means for transmitting, via the transceiver, the location measurement data to the server UE.
  • the processor 802 may include an intelligent hardware device (e.g., a general-purpose processor, a DSP, a CPU, a microcontroller, an ASIC, an FPGA, a programmable logic device, a discrete gate or transistor logic component, a discrete hardware component, or any combination thereof) .
  • the processor 802 may be configured to operate a memory array using a memory controller.
  • a memory controller may be integrated into the processor 802.
  • the processor 802 may be configured to execute computer-readable instructions stored in a memory (e.g., the memory 804) to cause the device 800 to perform various functions of the present disclosure.
  • the memory 804 may include random access memory (RAM) and read-only memory (ROM) .
  • the memory 804 may store computer-readable, computer-executable code including instructions that, when executed by the processor 802 cause the device 800 to perform various functions described herein.
  • the code may be stored in a non-transitory computer-readable medium such as system memory or another type of memory.
  • the code may not be directly executable by the processor 802 but may cause a computer (e.g., when compiled and executed) to perform functions described herein.
  • the memory 804 may include, among other things, a basic I/O system (BIOS) which may control basic hardware or software operation such as the interaction with peripheral components or devices.
  • BIOS basic I/O system
  • the I/O controller 808 may manage input and output signals for the device 800.
  • the I/O controller 808 may also manage peripherals not integrated into the device M02.
  • the I/O controller 808 may represent a physical connection or port to an external peripheral.
  • the I/O controller 808 may utilize an operating system such as or another known operating system.
  • the I/O controller 808 may be implemented as part of a processor, such as the processor 806.
  • a user may interact with the device 800 via the I/O controller 808 or via hardware components controlled by the I/O controller 808.
  • the device 800 may include a single antenna 810. However, in some other implementations, the device 800 may have more than one antenna 810 (i.e., multiple antennas) , including multiple antenna panels or antenna arrays, which may be capable of concurrently transmitting or receiving multiple wireless transmissions.
  • the transceiver 806 may communicate bi-directionally, via the one or more antennas 810, wired, or wireless links as described herein.
  • the transceiver 806 may represent a wireless transceiver and may communicate bi-directionally with another wireless transceiver.
  • the transceiver 806 may also include a modem to modulate the packets, to provide the modulated packets to one or more antennas 810 for transmission, and to demodulate packets received from the one or more antennas 810.
  • the transceiver 806 may include one or more transmit chains, one or more receive chains, or a combination thereof.
  • a transmit chain may be configured to generate and transmit signals (e.g., control information, data, packets) .
  • the transmit chain may include at least one modulator for modulating data onto a carrier signal, preparing the signal for transmission over a wireless medium.
  • the at least one modulator may be configured to support one or more techniques such as amplitude modulation (AM) , frequency modulation (FM) , or digital modulation schemes like phase-shift keying (PSK) or quadrature amplitude modulation (QAM) .
  • the transmit chain may also include at least one power amplifier configured to amplify the modulated signal to an appropriate power level suitable for transmission over the wireless medium.
  • the transmit chain may also include one or more antennas 810 for transmitting the amplified signal into the air or wireless medium.
  • a receive chain may be configured to receive signals (e.g., control information, data, packets) over a wireless medium.
  • the receive chain may include one or more antennas 810 for receive the signal over the air or wireless medium.
  • the receive chain may include at least one amplifier (e.g., a low-noise amplifier (LNA) ) configured to amplify the received signal.
  • the receive chain may include at least one demodulator configured to demodulate the receive signal and obtain the transmitted data by reversing the modulation technique applied during transmission of the signal.
  • the receive chain may include at least one decoder for decoding the processing the demodulated signal to receive the transmitted data.
  • FIG. 9 illustrates an example of a processor 900 that supports positioning of a target UE in accordance with aspects of the present disclosure.
  • the processor 900 may be an example of a processor configured to perform various operations in accordance with examples as described herein.
  • the processor 900 may include a controller 902 configured to perform various operations in accordance with examples as described herein.
  • the processor 900 may optionally include at least one memory 904, such as L1/L2/L3 cache. Additionally, or alternatively, the processor 900 may optionally include one or more arithmetic-logic units (ALUs) 900.
  • ALUs arithmetic-logic units
  • One or more of these components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces (e.g., buses) .
  • the processor 900 may be a processor chipset and include a protocol stack (e.g., a software stack) executed by the processor chipset to perform various operations (e.g., receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading) in accordance with examples as described herein.
  • a protocol stack e.g., a software stack
  • operations e.g., receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading
  • the processor chipset may include one or more cores, one or more caches (e.g., memory local to or included in the processor chipset (e.g., the processor 900) or other memory (e.g., random access memory (RAM) , read-only memory (ROM) , dynamic RAM (DRAM) , synchronous dynamic RAM (SDRAM) , static RAM (SRAM) , ferroelectric RAM (FeRAM) , magnetic RAM (MRAM) , resistive RAM (RRAM) , flash memory, phase change memory (PCM) , and others) .
  • RAM random access memory
  • ROM read-only memory
  • DRAM dynamic RAM
  • SDRAM synchronous dynamic RAM
  • SRAM static RAM
  • FeRAM ferroelectric RAM
  • MRAM magnetic RAM
  • RRAM resistive RAM
  • PCM phase change memory
  • the controller 902 may be configured to manage and coordinate various operations (e.g., signaling, receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading) of the processor 900 to cause the processor 900 to support various operations of a target UE 104-1 in accordance with examples as described herein.
  • the controller 902 may operate as a control unit of the processor 900, generating control signals that manage the operation of various components of the processor 900. These control signals include enabling or disabling functional units, selecting data paths, initiating memory access, and coordinating timing of operations.
  • the controller 902 may be configured to fetch (e.g., obtain, retrieve, receive) instructions from the memory 904 and determine subsequent instruction (s) to be executed to cause the processor 900 to support various operations in accordance with examples as described herein.
  • the controller 902 may be configured to track memory address of instructions associated with the memory 904.
  • the controller 902 may be configured to decode instructions to determine the operation to be performed and the operands involved.
  • the controller 902 may be configured to interpret the instruction and determine control signals to be output to other components of the processor 900 to cause the processor 900 to support various operations in accordance with examples as described herein.
  • the controller 902 may be configured to manage flow of data within the processor 900.
  • the controller 902 may be configured to control transfer of data between registers, arithmetic logic units (ALUs) , and other functional units of the processor 900.
  • ALUs arithmetic logic units
  • the memory 904 may include one or more caches (e.g., memory local to or included in the processor 900 or other memory, such RAM, ROM, DRAM, SDRAM, SRAM, MRAM, flash memory, etc. In some implementation, the memory 904 may reside within or on a processor chipset (e.g., local to the processor 900) . In some other implementations, the memory 904 may reside external to the processor chipset (e.g., remote to the processor 900) .
  • caches e.g., memory local to or included in the processor 900 or other memory, such RAM, ROM, DRAM, SDRAM, SRAM, MRAM, flash memory, etc.
  • the memory 904 may reside within or on a processor chipset (e.g., local to the processor 900) . In some other implementations, the memory 904 may reside external to the processor chipset (e.g., remote to the processor 900) .
  • the memory 904 may store computer-readable, computer-executable code including instructions that, when executed by the processor 900, cause the processor 900 to perform various functions described herein.
  • the code may be stored in a non-transitory computer-readable medium such as system memory or another type of memory.
  • the controller 902 and/or the processor 900 may be configured to execute computer-readable instructions stored in the memory 904 to cause the processor 900 to perform various functions.
  • the processor 900 and/or the controller 902 may be coupled with or to the memory 904, and the processor 900, the controller 902, and the memory 904 may be configured to perform various functions described herein.
  • the processor 900 may include multiple processors and the memory 904 may include multiple memories. One or more of the multiple processors may be coupled with one or more of the multiple memories, which may, individually or collectively, be configured to perform various functions herein.
  • the one or more ALUs 900 may be configured to support various operations in accordance with examples as described herein.
  • the one or more ALUs 900 may reside within or on a processor chipset (e.g., the processor 900) .
  • the one or more ALUs 900 may reside external to the processor chipset (e.g., the processor 900) .
  • One or more ALUs 900 may perform one or more computations such as addition, subtraction, multiplication, and division on data.
  • one or more ALUs 900 may receive input operands and an operation code, which determines an operation to be executed.
  • One or more ALUs 900 be configured with a variety of logical and arithmetic circuits, including adders, subtractors, shifters, and logic gates, to process and manipulate the data according to the operation. Additionally, or alternatively, the one or more ALUs 900 may support logical operations such as AND, OR, exclusive-OR (XOR) , not-OR (NOR) , and not-AND (NAND) , enabling the one or more ALUs 900 to handle conditional operations, comparisons, and bitwise operations.
  • logical operations such as AND, OR, exclusive-OR (XOR) , not-OR (NOR) , and not-AND (NAND) , enabling the one or more ALUs 900 to handle conditional operations, comparisons, and bitwise operations.
  • the processor 900 may support wireless communication in accordance with examples as disclosed herein.
  • the processor 900 may be configured to or operable to support a means for determining, for a positioning procedure in which the UE is a target UE, a server UE from a set of candidate server UEs or at least one anchor UE from a set of candidate anchor UEs and a means for performing one of the following (i) or (ii) : (i) in the case that the server UE is determined, transmitting, via the transceiver to the server UE, a request for anchor UE information indicative of at least one anchor UE among the set of candidate anchor UEs; and receiving, via the transceiver, the anchor UE information from the server UE; (ii) in the case that the at least one anchor UE is determined, transmitting, via the transceiver to the set of candidate server UEs, a request for link quality information indicative of link qualities between the set of candidate server UEs and the at least one anchor UE; and receiving,
  • FIG. 10 illustrates an example of a processor 1000 that supports positioning of a target UE in accordance with aspects of the present disclosure.
  • the processor 1000 may be an example of a processor configured to perform various operations in accordance with examples as described herein.
  • the processor 1000 may include a controller 1002 configured to perform various operations in accordance with examples as described herein.
  • the processor 1000 may optionally include at least one memory 1004, such as L1/L2/L3 cache. Additionally, or alternatively, the processor 1000 may optionally include one or more arithmetic-logic units (ALUs) 1000.
  • ALUs arithmetic-logic units
  • One or more of these components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces (e.g., buses) .
  • the processor 1000 may be a processor chipset and include a protocol stack (e.g., a software stack) executed by the processor chipset to perform various operations (e.g., receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading) in accordance with examples as described herein.
  • a protocol stack e.g., a software stack
  • operations e.g., receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading
  • the processor chipset may include one or more cores, one or more caches (e.g., memory local to or included in the processor chipset (e.g., the processor 1000) or other memory (e.g., random access memory (RAM) , read-only memory (ROM) , dynamic RAM (DRAM) , synchronous dynamic RAM (SDRAM) , static RAM (SRAM) , ferroelectric RAM (FeRAM) , magnetic RAM (MRAM) , resistive RAM (RRAM) , flash memory, phase change memory (PCM) , and others) .
  • RAM random access memory
  • ROM read-only memory
  • DRAM dynamic RAM
  • SDRAM synchronous dynamic RAM
  • SRAM static RAM
  • FeRAM ferroelectric RAM
  • MRAM magnetic RAM
  • RRAM resistive RAM
  • PCM phase change memory
  • the controller 1002 may be configured to manage and coordinate various operations (e.g., signaling, receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading) of the processor 1000 to cause the processor 1000 to support various operations of a server UE 104-2 or a candidate server UE 104-2’ in accordance with examples as described herein.
  • the controller 1002 may operate as a control unit of the processor 1000, generating control signals that manage the operation of various components of the processor 1000. These control signals include enabling or disabling functional units, selecting data paths, initiating memory access, and coordinating timing of operations.
  • the controller 1002 may be configured to fetch (e.g., obtain, retrieve, receive) instructions from the memory 1004 and determine subsequent instruction (s) to be executed to cause the processor 1000 to support various operations in accordance with examples as described herein.
  • the controller 1002 may be configured to track memory address of instructions associated with the memory 1004.
  • the controller 1002 may be configured to decode instructions to determine the operation to be performed and the operands involved.
  • the controller 1002 may be configured to interpret the instruction and determine control signals to be output to other components of the processor 1000 to cause the processor 1000 to support various operations in accordance with examples as described herein.
  • the controller 1002 may be configured to manage flow of data within the processor 1000.
  • the controller 1002 may be configured to control transfer of data between registers, arithmetic logic units (ALUs) , and other functional units of the processor 1000.
  • ALUs arithmetic logic units
  • the memory 1004 may include one or more caches (e.g., memory local to or included in the processor 1000 or other memory, such RAM, ROM, DRAM, SDRAM, SRAM, MRAM, flash memory, etc. In some implementation, the memory 1004 may reside within or on a processor chipset (e.g., local to the processor 1000) . In some other implementations, the memory 1004 may reside external to the processor chipset (e.g., remote to the processor 1000) .
  • caches e.g., memory local to or included in the processor 1000 or other memory, such RAM, ROM, DRAM, SDRAM, SRAM, MRAM, flash memory, etc.
  • the memory 1004 may reside within or on a processor chipset (e.g., local to the processor 1000) . In some other implementations, the memory 1004 may reside external to the processor chipset (e.g., remote to the processor 1000) .
  • the memory 1004 may store computer-readable, computer-executable code including instructions that, when executed by the processor 1000, cause the processor 1000 to perform various functions described herein.
  • the code may be stored in a non-transitory computer-readable medium such as system memory or another type of memory.
  • the controller 1002 and/or the processor 1000 may be configured to execute computer-readable instructions stored in the memory 1004 to cause the processor 1000 to perform various functions.
  • the processor 1000 and/or the controller 1002 may be coupled with or to the memory 1004, and the processor 1000, the controller 1002, and the memory 1004 may be configured to perform various functions described herein.
  • the processor 1000 may include multiple processors and the memory 1004 may include multiple memories. One or more of the multiple processors may be coupled with one or more of the multiple memories, which may, individually or collectively, be configured to perform various functions herein.
  • the one or more ALUs 1000 may be configured to support various operations in accordance with examples as described herein.
  • the one or more ALUs 1000 may reside within or on a processor chipset (e.g., the processor 1000) .
  • the one or more ALUs 1000 may reside external to the processor chipset (e.g., the processor 1000) .
  • One or more ALUs 1000 may perform one or more computations such as addition, subtraction, multiplication, and division on data.
  • one or more ALUs 1000 may receive input operands and an operation code, which determines an operation to be executed.
  • One or more ALUs 1000 be configured with a variety of logical and arithmetic circuits, including adders, subtractors, shifters, and logic gates, to process and manipulate the data according to the operation. Additionally, or alternatively, the one or more ALUs 1000 may support logical operations such as AND, OR, exclusive-OR (XOR) , not-OR (NOR) , and not-AND (NAND) , enabling the one or more ALUs 1000 to handle conditional operations, comparisons, and bitwise operations.
  • logical operations such as AND, OR, exclusive-OR (XOR) , not-OR (NOR) , and not-AND (NAND) , enabling the one or more ALUs 1000 to handle conditional operations, comparisons, and bitwise operations.
  • the processor 1000 may support wireless communication in accordance with examples as disclosed herein.
  • the processor 1000 may be configured to or operable to support a means for receiving, via the transceiver from a target user equipment (UE) in a positioning procedure, a request for anchor UE information associated with a set of candidate anchor UEs for the positioning procedure or a request for link quality information associated with at least one anchor UE for the positioning procedure; and a means for performing one of the following (i) or (ii) : (i) in the case that the request for the anchor UE information is received, selecting at least one anchor UE from the set of candidate anchor UEs; and transmitting, via the transceiver to the target UE, the anchor UE information indicative of the at least one anchor UE; (ii) in the case that the request for the link quality information is received, determining at least one link quality between the UE and the at least one anchor UE; and transmitting, via the transceiver to the target UE, the link quality information indicative of the at least one link quality
  • FIG. 11 illustrates an example of a processor 1100 that supports positioning of a target UE in accordance with aspects of the present disclosure.
  • the processor 1100 may be an example of a processor configured to perform various operations in accordance with examples as described herein.
  • the processor 1100 may include a controller 1102 configured to perform various operations in accordance with examples as described herein.
  • the processor 1100 may optionally include at least one memory 1104, such as L1/L2/L3 cache. Additionally, or alternatively, the processor 1100 may optionally include one or more arithmetic-logic units (ALUs) 1100.
  • ALUs arithmetic-logic units
  • One or more of these components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces (e.g., buses) .
  • the processor 1100 may be a processor chipset and include a protocol stack (e.g., a software stack) executed by the processor chipset to perform various operations (e.g., receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading) in accordance with examples as described herein.
  • a protocol stack e.g., a software stack
  • operations e.g., receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading
  • the processor chipset may include one or more cores, one or more caches (e.g., memory local to or included in the processor chipset (e.g., the processor 1100) or other memory (e.g., random access memory (RAM) , read-only memory (ROM) , dynamic RAM (DRAM) , synchronous dynamic RAM (SDRAM) , static RAM (SRAM) , ferroelectric RAM (FeRAM) , magnetic RAM (MRAM) , resistive RAM (RRAM) , flash memory, phase change memory (PCM) , and others) .
  • RAM random access memory
  • ROM read-only memory
  • DRAM dynamic RAM
  • SDRAM synchronous dynamic RAM
  • SRAM static RAM
  • FeRAM ferroelectric RAM
  • MRAM magnetic RAM
  • RRAM resistive RAM
  • PCM phase change memory
  • the controller 1102 may be configured to manage and coordinate various operations (e.g., signaling, receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading) of the processor 1100 to cause the processor 1100 to support various operations of a network device 206-1 or a LMF 106-1 in accordance with examples as described herein.
  • the controller 1102 may operate as a control unit of the processor 1100, generating control signals that manage the operation of various components of the processor 1100. These control signals include enabling or disabling functional units, selecting data paths, initiating memory access, and coordinating timing of operations.
  • the controller 1102 may be configured to fetch (e.g., obtain, retrieve, receive) instructions from the memory 1104 and determine subsequent instruction (s) to be executed to cause the processor 1100 to support various operations in accordance with examples as described herein.
  • the controller 1102 may be configured to track memory address of instructions associated with the memory 1104.
  • the controller 1102 may be configured to decode instructions to determine the operation to be performed and the operands involved.
  • the controller 1102 may be configured to interpret the instruction and determine control signals to be output to other components of the processor 1100 to cause the processor 1100 to support various operations in accordance with examples as described herein.
  • the controller 1102 may be configured to manage flow of data within the processor 1100.
  • the controller 1102 may be configured to control transfer of data between registers, arithmetic logic units (ALUs) , and other functional units of the processor 1100.
  • ALUs arithmetic logic units
  • the memory 1104 may include one or more caches (e.g., memory local to or included in the processor 1100 or other memory, such RAM, ROM, DRAM, SDRAM, SRAM, MRAM, flash memory, etc. In some implementation, the memory 1104 may reside within or on a processor chipset (e.g., local to the processor 1100) . In some other implementations, the memory 1104 may reside external to the processor chipset (e.g., remote to the processor 1100) .
  • caches e.g., memory local to or included in the processor 1100 or other memory, such RAM, ROM, DRAM, SDRAM, SRAM, MRAM, flash memory, etc.
  • the memory 1104 may reside within or on a processor chipset (e.g., local to the processor 1100) . In some other implementations, the memory 1104 may reside external to the processor chipset (e.g., remote to the processor 1100) .
  • the memory 1104 may store computer-readable, computer-executable code including instructions that, when executed by the processor 1100, cause the processor 1100 to perform various functions described herein.
  • the code may be stored in a non-transitory computer-readable medium such as system memory or another type of memory.
  • the controller 1102 and/or the processor 1100 may be configured to execute computer-readable instructions stored in the memory 1104 to cause the processor 1100 to perform various functions.
  • the processor 1100 and/or the controller 1102 may be coupled with or to the memory 1104, and the processor 1100, the controller 1102, and the memory 1104 may be configured to perform various functions described herein.
  • the processor 1100 may include multiple processors and the memory 1104 may include multiple memories. One or more of the multiple processors may be coupled with one or more of the multiple memories, which may, individually or collectively, be configured to perform various functions herein.
  • the one or more ALUs 1100 may be configured to support various operations in accordance with examples as described herein.
  • the one or more ALUs 1100 may reside within or on a processor chipset (e.g., the processor 1100) .
  • the one or more ALUs 1100 may reside external to the processor chipset (e.g., the processor 1100) .
  • One or more ALUs 1100 may perform one or more computations such as addition, subtraction, multiplication, and division on data.
  • one or more ALUs 1100 may receive input operands and an operation code, which determines an operation to be executed.
  • One or more ALUs 1100 be configured with a variety of logical and arithmetic circuits, including adders, subtractors, shifters, and logic gates, to process and manipulate the data according to the operation. Additionally, or alternatively, the one or more ALUs 1100 may support logical operations such as AND, OR, exclusive-OR (XOR) , not-OR (NOR) , and not-AND (NAND) , enabling the one or more ALUs 1100 to handle conditional operations, comparisons, and bitwise operations.
  • logical operations such as AND, OR, exclusive-OR (XOR) , not-OR (NOR) , and not-AND (NAND) , enabling the one or more ALUs 1100 to handle conditional operations, comparisons, and bitwise operations.
  • the processor 1100 may support wireless communication in accordance with examples as disclosed herein.
  • the processor 1100 may be configured to or operable to support a means for determining that a server UE is to be determined for a positioning procedure of a target UE; a means for determining the server UE for the positioning procedure; a means for transmitting, via the transceiver to the server UE, a request for a location calculation result of the target UE; and a means for receiving, via the transceiver from the server UE, information associated with the location calculation result.
  • FIG. 12 illustrates an example of a processor 1200 that supports positioning of a target UE in accordance with aspects of the present disclosure.
  • the processor 1200 may be an example of a processor configured to perform various operations in accordance with examples as described herein.
  • the processor 1200 may include a controller 1202 configured to perform various operations in accordance with examples as described herein.
  • the processor 1200 may optionally include at least one memory 1204, such as L1/L2/L3 cache. Additionally, or alternatively, the processor 1200 may optionally include one or more arithmetic-logic units (ALUs) 1200.
  • ALUs arithmetic-logic units
  • One or more of these components may be in electronic communication or otherwise coupled (e.g., operatively, communicatively, functionally, electronically, electrically) via one or more interfaces (e.g., buses) .
  • the processor 1200 may be a processor chipset and include a protocol stack (e.g., a software stack) executed by the processor chipset to perform various operations (e.g., receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading) in accordance with examples as described herein.
  • a protocol stack e.g., a software stack
  • operations e.g., receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading
  • the processor chipset may include one or more cores, one or more caches (e.g., memory local to or included in the processor chipset (e.g., the processor 1200) or other memory (e.g., random access memory (RAM) , read-only memory (ROM) , dynamic RAM (DRAM) , synchronous dynamic RAM (SDRAM) , static RAM (SRAM) , ferroelectric RAM (FeRAM) , magnetic RAM (MRAM) , resistive RAM (RRAM) , flash memory, phase change memory (PCM) , and others) .
  • RAM random access memory
  • ROM read-only memory
  • DRAM dynamic RAM
  • SDRAM synchronous dynamic RAM
  • SRAM static RAM
  • FeRAM ferroelectric RAM
  • MRAM magnetic RAM
  • RRAM resistive RAM
  • PCM phase change memory
  • the controller 1202 may be configured to manage and coordinate various operations (e.g., signaling, receiving, obtaining, retrieving, transmitting, outputting, forwarding, storing, determining, identifying, accessing, writing, reading) of the processor 1200 to cause the processor 1200 to support various operations of an anchor UE 104-3 in accordance with examples as described herein.
  • the controller 1202 may operate as a control unit of the processor 1200, generating control signals that manage the operation of various components of the processor 1200. These control signals include enabling or disabling functional units, selecting data paths, initiating memory access, and coordinating timing of operations.
  • the controller 1202 may be configured to fetch (e.g., obtain, retrieve, receive) instructions from the memory 1204 and determine subsequent instruction (s) to be executed to cause the processor 1200 to support various operations in accordance with examples as described herein.
  • the controller 1202 may be configured to track memory address of instructions associated with the memory 1204.
  • the controller 1202 may be configured to decode instructions to determine the operation to be performed and the operands involved.
  • the controller 1202 may be configured to interpret the instruction and determine control signals to be output to other components of the processor 1200 to cause the processor 1200 to support various operations in accordance with examples as described herein.
  • the controller 1202 may be configured to manage flow of data within the processor 1200.
  • the controller 1202 may be configured to control transfer of data between registers, arithmetic logic units (ALUs) , and other functional units of the processor 1200.
  • ALUs arithmetic logic units
  • the memory 1204 may include one or more caches (e.g., memory local to or included in the processor 1200 or other memory, such RAM, ROM, DRAM, SDRAM, SRAM, MRAM, flash memory, etc. In some implementation, the memory 1204 may reside within or on a processor chipset (e.g., local to the processor 1200) . In some other implementations, the memory 1204 may reside external to the processor chipset (e.g., remote to the processor 1200) .
  • caches e.g., memory local to or included in the processor 1200 or other memory, such RAM, ROM, DRAM, SDRAM, SRAM, MRAM, flash memory, etc.
  • the memory 1204 may reside within or on a processor chipset (e.g., local to the processor 1200) . In some other implementations, the memory 1204 may reside external to the processor chipset (e.g., remote to the processor 1200) .
  • the memory 1204 may store computer-readable, computer-executable code including instructions that, when executed by the processor 1200, cause the processor 1200 to perform various functions described herein.
  • the code may be stored in a non-transitory computer-readable medium such as system memory or another type of memory.
  • the controller 1202 and/or the processor 1200 may be configured to execute computer-readable instructions stored in the memory 1204 to cause the processor 1200 to perform various functions.
  • the processor 1200 and/or the controller 1202 may be coupled with or to the memory 1204, and the processor 1200, the controller 1202, and the memory 1204 may be configured to perform various functions described herein.
  • the processor 1200 may include multiple processors and the memory 1204 may include multiple memories. One or more of the multiple processors may be coupled with one or more of the multiple memories, which may, individually or collectively, be configured to perform various functions herein.
  • the one or more ALUs 1200 may be configured to support various operations in accordance with examples as described herein.
  • the one or more ALUs 1200 may reside within or on a processor chipset (e.g., the processor 1200) .
  • the one or more ALUs 1200 may reside external to the processor chipset (e.g., the processor 1200) .
  • One or more ALUs 1200 may perform one or more computations such as addition, subtraction, multiplication, and division on data.
  • one or more ALUs 1200 may receive input operands and an operation code, which determines an operation to be executed.
  • One or more ALUs 1200 be configured with a variety of logical and arithmetic circuits, including adders, subtractors, shifters, and logic gates, to process and manipulate the data according to the operation. Additionally, or alternatively, the one or more ALUs 1200 may support logical operations such as AND, OR, exclusive-OR (XOR) , not-OR (NOR) , and not-AND (NAND) , enabling the one or more ALUs 1200 to handle conditional operations, comparisons, and bitwise operations.
  • logical operations such as AND, OR, exclusive-OR (XOR) , not-OR (NOR) , and not-AND (NAND) , enabling the one or more ALUs 1200 to handle conditional operations, comparisons, and bitwise operations.
  • the processor 1200 may support wireless communication in accordance with examples as disclosed herein.
  • the processor 1200 may be configured to or operable to support a means for receiving, via the transceiver, first assistance data for a positioning procedure from a network device or a server UE in the positioning procedure, wherein the UE is an anchor UE in the positioning procedure; a means for performing a location measurement of a target UE in the positioning procedure to obtain location measurement data associated with the target UE; and a means for transmitting, via the transceiver, the location measurement data to the server UE.
  • FIG. 13 illustrates a flowchart of a method 1300 that supports positioning of a target UE in accordance with aspects of the present disclosure.
  • the operations of the method 1300 may be implemented by a device or its components as described herein.
  • the operations of the method 1300 may be performed by a target UE 104-1 as described herein.
  • the device may execute a set of instructions to control the function elements of the device to perform the described functions. Additionally, or alternatively, the device may perform aspects of the described functions using special-purpose hardware.
  • the method may include determining, for a positioning procedure in which the terminal device is a target user equipment (UE) , a server UE from a set of candidate server UEs.
  • UE target user equipment
  • the operations of 1305 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1305 may be performed by a device as described with reference to FIGS. 1A-1C.
  • the method may include transmitting, to the server UE, a request for anchor UE information indicative of at least one anchor UE among the set of candidate anchor UEs.
  • the operations of 1310 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1310 may be performed by a device as described with reference to FIGS. 1A-1C.
  • the method may include receiving the anchor UE information from the server UE.
  • the operations of 1315 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1315 may be performed by a device as described with reference to FIGS. 1A-1C.
  • FIG. 14 illustrates a flowchart of a method 1400 that supports positioning of a target UE in accordance with aspects of the present disclosure.
  • the operations of the method 1400 may be implemented by a device or its components as described herein.
  • the operations of the method 1400 may be performed by a target UE 104-1 as described herein.
  • the device may execute a set of instructions to control the function elements of the device to perform the described functions. Additionally, or alternatively, the device may perform aspects of the described functions using special-purpose hardware.
  • the method may include determining, for a positioning procedure in which the terminal device is a target user equipment (UE) , at least one anchor UE from a set of candidate anchor UEs.
  • UE target user equipment
  • the operations of 1405 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1405 may be performed by a device as described with reference to FIGS. 1A-1C.
  • the method may include transmitting, to the set of candidate server UEs, a request for link quality information indicative of link qualities between the set of candidate server UEs and the at least one anchor UE.
  • the operations of 1410 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1410 may be performed by a device as described with reference to FIGS. 1A-1C.
  • the method may include receiving the link quality information from the set of candidate server UEs.
  • the operations of 1415 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1415 may be performed by a device as described with reference to FIGS. 1A-1C.
  • FIG. 15 illustrates a flowchart of a method 1500 that supports positioning of a target UE in accordance with aspects of the present disclosure.
  • the operations of the method 1500 may be implemented by a device or its components as described herein.
  • the operations of the method 1500 may be performed by a target UE 104-1 as described herein.
  • the device may execute a set of instructions to control the function elements of the device to perform the described functions. Additionally, or alternatively, the device may perform aspects of the described functions using special-purpose hardware.
  • the method 1500 may be deemed as a continuation of the method 1400.
  • the method may include determining a server UE from the set of candidate server UEs based on the link quality information.
  • the operations of 1505 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1505 may be performed by a device as described with reference to FIGS. 1A-1C.
  • the method may include transmitting, to the server UE, an indication of a role of the server UE in the positioning procedure.
  • the operations of 1510 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1510 may be performed by a device as described with reference to FIGS. 1A-1C.
  • FIG. 16 illustrates a flowchart of a method 1600 that supports positioning of a target UE in accordance with aspects of the present disclosure.
  • the operations of the method 1600 may be implemented by a device or its components as described herein.
  • the operations of the method 1600 may be performed by a server UE 104-2 as described herein.
  • the device may execute a set of instructions to control the function elements of the device to perform the described functions. Additionally, or alternatively, the device may perform aspects of the described functions using special-purpose hardware.
  • the method may include receiving, from a target user equipment (UE) in a positioning procedure, a request for anchor UE information associated with a set of candidate anchor UEs for the positioning procedure.
  • UE target user equipment
  • the operations of 1605 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1605 may be performed by a device as described with reference to FIGS. 1A-1C.
  • the method may include selecting at least one anchor UE from the set of candidate anchor UEs.
  • the operations of 1610 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1610 may be performed by a device as described with reference to FIGS. 1A-1C.
  • the method may include transmitting, to the target UE, the anchor UE information indicative of the at least one anchor UE.
  • the operations of 1615 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1615 may be performed by a device as described with reference to FIGS. 1A-1C.
  • FIG. 17 illustrates a flowchart of a method 1700 that supports positioning of a target UE in accordance with aspects of the present disclosure.
  • the operations of the method 1700 may be implemented by a device or its components as described herein.
  • the operations of the method 1700 may be performed by a server UE 104-2 as described herein.
  • the device may execute a set of instructions to control the function elements of the device to perform the described functions. Additionally, or alternatively, the device may perform aspects of the described functions using special-purpose hardware.
  • the method 1700 may be deemed as a specific example of the step 1610 in the method 1600.
  • the method may include discovering candidate anchor UEs among the set of candidate anchor UEs.
  • the operations of 1705 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1705 may be performed by a device as described with reference to FIGS. 1A-1C.
  • the method may include determining link qualities between the terminal device and the discovered candidate anchor UEs.
  • the operations of 1710 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1710 may be performed by a device as described with reference to FIGS. 1A-1C.
  • the method may include determining the at least one anchor UE from the discovered candidate anchor UEs based on the link qualities and the QoS requirement.
  • the operations of 1715 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1715 may be performed by a device as described with reference to FIGS. 1A-1C.
  • FIG. 18 illustrates a flowchart of a method 1800 that supports positioning of a target UE in accordance with aspects of the present disclosure.
  • the operations of the method 1800 may be implemented by a device or its components as described herein.
  • the operations of the method 1800 may be performed by a candidate server UE 104-2’ as described herein.
  • the device may execute a set of instructions to control the function elements of the device to perform the described functions. Additionally, or alternatively, the device may perform aspects of the described functions using special-purpose hardware.
  • the method may include receiving, from a target user equipment (UE) in a positioning procedure, a request for link quality information associated with at least one anchor UE for the positioning procedure.
  • UE target user equipment
  • the operations of 1805 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1805 may be performed by a device as described with reference to FIGS. 1A-1C.
  • the method may include determining at least one link quality between the terminal device and the at least one anchor UE.
  • the operations of 1810 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1810 may be performed by a device as described with reference to FIGS. 1A-1C.
  • the method may include transmitting, to the target UE, the link quality information indicative of the at least one link quality.
  • the operations of 1815 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1815 may be performed by a device as described with reference to FIGS. 1A-1C.
  • FIG. 19 illustrates a flowchart of a method 1900 that supports positioning of a target UE in accordance with aspects of the present disclosure.
  • the operations of the method 1900 may be implemented by a device or its components as described herein.
  • the operations of the method 1900 may be performed by a candidate server UE 104-2’ as described herein.
  • the device may execute a set of instructions to control the function elements of the device to perform the described functions. Additionally, or alternatively, the device may perform aspects of the described functions using special-purpose hardware.
  • the method 1900 may be deemed as a continuation of the method 1800.
  • the method may include receiving, from a network device, a request for a location calculation result of the target UE.
  • the operations of 1905 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1905 may be performed by a device as described with reference to FIGS. 1A-1C.
  • the method may include transmitting, to the target UE or to the at least one anchor UE, a request for location measurement data associated with the target UE.
  • the operations of 1910 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1910 may be performed by a device as described with reference to FIGS. 1A-1C.
  • the method may include receiving, from the target UE or from the at least one anchor UE, the location measurement data.
  • the operations of 1915 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1915 may be performed by a device as described with reference to FIGS. 1A-1C.
  • the method may include performing a location calculation of the target UE based on the location measurement data and the request for the location calculation result to obtain the location calculation result of the target UE.
  • the operations of 1920 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1920 may be performed by a device as described with reference to FIGS. 1A-1C.
  • the method may include transmitting, to the network device, information associated with the location calculation result a.
  • the operations of 1925 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 1925 may be performed by a device as described with reference to FIGS. 1A-1C.
  • FIG. 20 illustrates a flowchart of a method 2000 that supports positioning of a target UE in accordance with aspects of the present disclosure.
  • the operations of the method 2000 may be implemented by a device or its components as described herein.
  • the operations of the method 2000 may be performed by a network device 206-1 or a LMF 106-1 as described herein.
  • the device may execute a set of instructions to control the function elements of the device to perform the described functions. Additionally, or alternatively, the device may perform aspects of the described functions using special-purpose hardware.
  • the method may include determining that a server user equipment (UE) is to be determined for a positioning procedure of a target UE.
  • UE server user equipment
  • the operations of 2005 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 2005 may be performed by a device as described with reference to FIGS. 1A-1C.
  • the method may include determining the server UE for the positioning procedure.
  • the operations of 2010 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 2010 may be performed by a device as described with reference to FIGS. 1A-1C.
  • the method may include transmitting, to the server UE, a request for a location calculation result of the target UE.
  • the operations of 2015 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 2015 may be performed by a device as described with reference to FIGS. 1A-1C.
  • the method may include receiving, from the server UE, information associated with the location calculation result.
  • the operations of 2020 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 2020 may be performed by a device as described with reference to FIGS. 1A-1C.
  • FIG. 21 illustrates a flowchart of a method 2100 that supports positioning of a target UE in accordance with aspects of the present disclosure.
  • the operations of the method 2100 may be implemented by a device or its components as described herein.
  • the operations of the method 2100 may be performed by a network device 206-1 or a LMF 106-1 as described herein.
  • the device may execute a set of instructions to control the function elements of the device to perform the described functions. Additionally, or alternatively, the device may perform aspects of the described functions using special-purpose hardware.
  • the method 2100 may be deemed as a specific example of the step 2010 in the method 2000.
  • the method may include transmitting, to the target UE, a request for server UE information.
  • the operations of 2105 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 2105 may be performed by a device as described with reference to FIGS. 1A-1C.
  • the method may include receiving, from the target UE, the server UE information, wherein the server UE is determined based on the server UE information.
  • the operations of 2110 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 2110 may be performed by a device as described with reference to FIGS. 1A-1C.
  • FIG. 22 illustrates a flowchart of a method 2200 that supports positioning of a target UE in accordance with aspects of the present disclosure.
  • the operations of the method 2200 may be implemented by a device or its components as described herein.
  • the operations of the method 2200 may be performed by a network device 206-1 or a LMF 106-1 as described herein.
  • the device may execute a set of instructions to control the function elements of the device to perform the described functions. Additionally, or alternatively, the device may perform aspects of the described functions using special-purpose hardware.
  • the method 2200 may be deemed as a specific example of the step 2010 in the method 2000.
  • the method may include transmitting, to the target UE, a request for candidate server UE information comprising information of a set of candidate server UEs and link quality information indicating link qualities between the set of candidate server UEs and at least one anchor UE for the positioning procedure.
  • the operations of 2205 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 2205 may be performed by a device as described with reference to FIGS. 1A-1C.
  • the method may include receiving, from the target UE, the candidate server UE information, wherein the server UE is determined from the set of candidate server UEs based on the information of the set of candidate server UEs and the link quality information.
  • the operations of 2210 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 2210 may be performed by a device as described with reference to FIGS. 1A-1C.
  • FIG. 23 illustrates a flowchart of a method 2300 that supports positioning of a target UE in accordance with aspects of the present disclosure.
  • the operations of the method 2300 may be implemented by a device or its components as described herein.
  • the operations of the method 2300 may be performed by an anchor UE 104-3 as described herein.
  • the device may execute a set of instructions to control the function elements of the device to perform the described functions. Additionally, or alternatively, the device may perform aspects of the described functions using special-purpose hardware.
  • the method may include receiving first assistance data for a positioning procedure from a network device or a server user equipment (UE) in the positioning procedure, wherein the terminal device is an anchor UE in the positioning procedure.
  • UE user equipment
  • the operations of 2305 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 2305 may be performed by a device as described with reference to FIGS. 1A-1C.
  • the method may include performing a location measurement of a target UE in the positioning procedure to obtain location measurement data associated with the target UE.
  • the operations of 2310 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 2310 may be performed by a device as described with reference to FIGS. 1A-1C.
  • the method may include transmitting the location measurement data to the server UE.
  • the operations of 2315 may be performed in accordance with examples as described herein. In some implementations, aspects of the operations of 2315 may be performed by a device as described with reference to FIGS. 1A-1C.
  • a general-purpose processor may be a microprocessor, but in the alternative, the processor may be any processor, controller, microcontroller, or state machine.
  • a processor may also be implemented as a combination of computing devices (e.g., a combination of a DSP and a microprocessor, multiple microprocessors, one or more microprocessors in conjunction with a DSP core, or any other such configuration.
  • the functions described herein may be implemented in hardware, software executed by a processor, firmware, or any combination thereof. If implemented in software executed by a processor, the functions may be stored on or transmitted over as one or more instructions or code on a computer-readable medium. Other examples and implementations are within the scope of the disclosure and appended claims. For example, due to the nature of software, functions described herein may be implemented using software executed by a processor, hardware, firmware, hardwiring, or combinations of any of these. Features implementing functions may also be physically located at various positions, including being distributed such that portions of functions are implemented at different physical locations.
  • Computer-readable media includes both non-transitory computer storage media and communication media including any medium that facilitates transfer of a computer program from one place to another.
  • a non-transitory storage medium may be any available medium that may be accessed by a general-purpose or special-purpose computer.
  • non-transitory computer-readable media may include RAM, ROM, electrically erasable programmable ROM (EEPROM) , flash memory, compact disk (CD) ROM or other optical disk storage, magnetic disk storage or other magnetic storage devices, or any other non-transitory medium that may be used to carry or store desired program code means in the form of instructions or data structures and that may be accessed by a general-purpose or special-purpose computer, or a general-purpose or special-purpose processor.
  • an article “a” before an element is unrestricted and understood to refer to “at least one” of those elements or “one or more” of those elements.
  • the terms “a, ” “at least one, ” “one or more, ” and “at least one of one or more” may be interchangeable.
  • a list of items indicates an inclusive list such that, for example, a list of at least one of A, B, or C means A or B or C or AB or AC or BC or ABC (i.e., A and B and C) .
  • the phrase “based on” shall not be construed as a reference to a closed set of conditions. For example, an example step that is described as “based on condition A” may be based on both a condition A and a condition B without departing from the scope of the present disclosure.
  • the phrase “based on” shall be construed in the same manner as the phrase “based at least in part on.
  • a “set” may include one or more elements.
  • embodiments of the present disclosure may provide the following solutions.
  • a terminal device comprising: a processor; and a transceiver coupled to the processor, wherein the processor is configured to: determine, for a positioning procedure in which the terminal device is a target user equipment (UE) , a server UE from a set of candidate server UEs or at least one anchor UE from a set of candidate anchor UEs; and perform one of the following (i) or (ii) : (i) in the case that the server UE is determined, transmitting, via the transceiver to the server UE, a request for anchor UE information indicative of at least one anchor UE among the set of candidate anchor UEs; and receiving, via the transceiver, the anchor UE information from the server UE; (ii) in the case that the at least one anchor UE is determined, transmitting, via the transceiver to the set of candidate server UEs, a request for link quality information indicative of link qualities between the set of candidate server UEs and the at least one anchor UE; and receiving, via the transcei
  • the request for the anchor UE information comprises at least one of the following: an indication of a role of the server UE in the positioning procedure; an indication of operations to be performed by the server UE; information of the set of candidate anchor UEs; or a quality of service (QoS) requirement associated with the positioning procedure.
  • QoS quality of service
  • Clause 3 The terminal device of clause 2, wherein the operations comprise at least one of the following: an anchor UE selection; an operation of providing the target UE or at least one anchor UE with a configuration for a sidelink positioning reference signal (SL-PRS) for the positioning procedure; an operation of providing at least one anchor UE or the target UE with a configuration for a SL-PRS measurement; an operation of providing at least one anchor UE or the target UE with a configuration for a SL-PRS measurement report; or a location calculation of the target UE.
  • SL-PRS sidelink positioning reference signal
  • Clause 4 The terminal device of clause 2, wherein the information of the set of candidate anchor UEs comprises at least one of the following: identities of candidate anchor UEs in the set of candidate anchor UEs; an indication of a role of candidate anchor UEs in the set of candidate anchor UEs in the positioning procedure; or capabilities of candidate anchor UEs in the set of candidate anchor UEs for the positioning procedure.
  • the anchor UE information comprises: at least one identity of the at least one anchor UE.
  • Clause 6 The terminal device of clause 1, wherein the request for the link quality information comprises: information of the at least one anchor UE; and a requirement indication for the link quality information.
  • Clause 7 The terminal device of clause 6, wherein the information of the at least one anchor UE comprises: at least one identity of the at least one anchor UE; and an indication of a role of the at least one anchor UE in the positioning procedure.
  • the link quality information comprises: an indication of a sidelink discovery-reference signal received power (SD-RSRP) between the set of candidate server UEs and the at least one anchor UE.
  • SD-RSRP sidelink discovery-reference signal received power
  • Clause 9 The terminal device of clause 1, wherein the processor is further configured to: determine a server UE from the set of candidate server UEs based on the link quality information in the case that the at least one anchor UE is determined; and transmit, via the transceiver to the server UE, an indication of a role of the server UE in the positioning procedure.
  • the processor is further configured to: receive, via the transceiver from a network device, a request for server UE information; determine a server UE from the set of candidate server UEs based on the link quality information and the request for the server UE information; and transmit, via the transceiver to the network device, the server UE information.
  • Clause 11 The terminal device of clause 10, wherein the request for the server UE information comprises: at least one selection criterion for selecting the server UE from the set of candidate server UEs.
  • the at least one selection criterion comprises at least one of the following: a computing ability criterion; a positioning method criterion; a network coverage criterion; or a link quality criterion.
  • Clause 13 The terminal device of clause 10, wherein the server UE information comprises: an identity of the server UE.
  • Clause 14 The terminal device of clause 10, wherein the processor is further configured to: transmit, via the transceiver to the at least one anchor UE, information of the server UE.
  • Clause 15 The terminal device of clause 14, wherein the information of the server UE comprises: an identity of the server UE; and an indication of a role of the server UE in the positioning procedure.
  • Clause 16 The terminal device of clause 1, wherein in the case that the at least one anchor UE is determined, the processor is further configured to: receive, via the transceiver from a network device, a request for candidate server UE information; determine information of the set of candidate server UEs and the link quality information based on the request for the candidate server UE information; and transmit, via the transceiver to the network device, the candidate server UE information comprising the information of the set of candidate server UEs and the link quality information.
  • the information of the set of candidate server UEs comprises at least one of the following: identities of candidate server UEs in the set of candidate server UEs; computing abilities of candidate server UEs in the set of candidate server UEs; supported positioning methods of candidate server UEs in the set of candidate server UEs; or network coverage information associated with candidate server UEs in the set of candidate server UEs.
  • Clause 18 The terminal device of clause 1, wherein the processor is further configured to: receive, via the transceiver from a server UE selected from the set of candidate server UEs or from a network device, first assistance data for the positioning procedure.
  • the first assistance data comprises at least one of the following: information of the server UE; a configuration for a sidelink positioning reference signal (SL-PRS) for the positioning procedure; a configuration for a SL-PRS measurement; or a configuration for a SL-PRS measurement report.
  • SL-PRS sidelink positioning reference signal
  • Clause 20 The terminal device of clause 19, wherein the information of the server UE comprises at least one of the following: an identity of the server UE; an indication of a role of the server UE in the positioning procedure; or an indication of operations to be performed by the server UE.
  • Clause 21 The terminal device of clause 19, wherein the configuration for the SL-PRS measurement report comprises at least one of the following: an indication of a report mode; or an indication of a response time for the SL-PRS measurement report.
  • Clause 22 The terminal device of clause 18, wherein the first assistance data is received via a broadcast signaling or a dedicated signaling.
  • a terminal device comprising: a processor; and a transceiver coupled to the processor, wherein the processor is configured to: receive, via the transceiver from a target user equipment (UE) in a positioning procedure, a request for anchor UE information associated with a set of candidate anchor UEs for the positioning procedure or a request for link quality information associated with at least one anchor UE for the positioning procedure; and perform one of the following (i) or (ii) : (i) in the case that the request for the anchor UE information is received, selecting at least one anchor UE from the set of candidate anchor UEs; and transmitting, via the transceiver to the target UE, the anchor UE information indicative of the at least one anchor UE; (ii) in the case that the request for the link quality information is received, determining at least one link quality between the terminal device and the at least one anchor UE; and transmitting, via the transceiver to the target UE, the link quality information indicative of the at least one link quality.
  • UE target user equipment
  • the request for the anchor UE information comprises at least one of the following: an indication of a role of the terminal device as a server UE in the positioning procedure; an indication of operations to be performed by the server UE; information of the set of candidate anchor UEs; or a quality of service (QoS) requirement associated with the positioning procedure.
  • QoS quality of service
  • Clause 25 The terminal device of clause 24, wherein the operations comprise at least one of the following: an anchor UE selection; an operation of providing the target UE or at least one anchor UE with a configuration for a sidelink positioning reference signal (SL-PRS) for the positioning procedure; an operation of providing at least one anchor UE or the target UE with a configuration for a SL-PRS measurement; an operation of providing at least one anchor UE or the target UE with a configuration for a SL-PRS measurement report; or a location calculation of the target UE.
  • SL-PRS sidelink positioning reference signal
  • Clause 26 The terminal device of clause 24, wherein the information of the set of candidate anchor UEs comprises at least one of the following: identities of candidate anchor UEs in the set of candidate anchor UEs; an indication of a role of candidate anchor UEs in the set of candidate anchor UEs in the positioning procedure; or capabilities of candidate anchor UEs in the set of candidate anchor UEs for the positioning procedure.
  • selecting the at least one anchor UE comprises: discovering candidate anchor UEs among the set of candidate anchor UEs; determining link qualities between the terminal device and the discovered candidate anchor UEs; and determining the at least one anchor UE from the discovered candidate anchor UEs based on the link qualities and the QoS requirement.
  • Clause 28 The terminal device of clause 23, wherein the anchor UE information comprises: at least one identity of the at least one anchor UE.
  • Clause 30 The terminal device of clause 29, wherein the information of the at least one anchor UE comprises: at least one identity of the at least one anchor UE; and an indication of a role of the at least one anchor UE in the positioning procedure.
  • the link quality information comprises: an indication of a sidelink discovery-reference signal received power (SD-RSRP) between the terminal device and the at least one anchor UE.
  • SD-RSRP sidelink discovery-reference signal received power
  • Clause 32 The terminal device of clause 23, wherein the processor is further configured to: after transmitting the link quality information to the target UE, receive, via the transceiver from the target UE or from a network device, an indication of a role of the terminal device as a server UE in the positioning procedure.
  • Clause 33 The terminal device of clause 23, wherein in the case that the terminal device is a server UE for the positioning procedure, the processor is further configured to: receive, via the transceiver from a network device, second assistance data for the positioning procedure.
  • the second assistance data comprises at least one of the following: an indication of a role of the server UE in the positioning procedure; an indication of operations to be performed by the server UE; or information associated with the operations to be performed by the server UE.
  • the information associated with the operations to be performed by the server UE comprises at least one of the following: a positioning method for the positioning procedure; an identity of a terminal device transmitting a sidelink positioning reference signal (SL-PRS) for the positioning procedure; an identity of a terminal device measuring the SL-PRS; location information of the at least one anchor UE; at least one location accuracy of the at least one anchor UE; a QoS requirement associated with the positioning procedure; a configuration for the SL-PRS; a configuration for a SL-PRS measurement; or a configuration for a SL-PRS measurement report.
  • a positioning method for the positioning procedure comprises at least one of the following: a positioning method for the positioning procedure; an identity of a terminal device transmitting a sidelink positioning reference signal (SL-PRS) for the positioning procedure; an identity of a terminal device measuring the SL-PRS; location information of the at least one anchor UE; at least one location accuracy of the at least one anchor UE; a QoS requirement associated with the positioning procedure
  • Clause 36 The terminal device of clause 23, wherein in the case that the terminal device is a server UE for the positioning procedure, the processor is further configured to: transmit, via the transceiver, first assistance data to the target UE or the at least one anchor UE.
  • the first assistance data comprises at least one of the following: information of the server UE; a configuration for a sidelink positioning reference signal (SL-PRS) for the positioning procedure; a configuration for a SL-PRS measurement; or a configuration for a SL-PRS measurement report.
  • SL-PRS sidelink positioning reference signal
  • Clause 38 The terminal device of clause 37, wherein the information of the server UE comprises at least one of the following: an identity of the server UE; an indication of a role of the server UE in the positioning procedure; or an indication of operations to be performed by the server UE.
  • Clause 39 The terminal device of clause 37, wherein the first assistance data is transmitted via a broadcast signaling or a dedicated signaling.
  • the processor is further configured to: receive, via the transceiver from a network device, a request for a location calculation result of the target UE; transmit, via the transceiver to the target UE or to the at least one anchor UE, a request for location measurement data associated with the target UE; receive, via the transceiver from the target UE or from the at least one anchor UE, the location measurement data; perform a location calculation of the target UE based on the location measurement data and the request for the location calculation result to obtain the location calculation result of the target UE; and transmit, via the transceiver to the network device, information associated with the location calculation result.
  • Clause 41 The terminal device of clause 40, wherein the information associated with the location calculation result comprises at least one of the following: the location calculation result; or an indication that the location calculation result does not satisfy a QoS requirement associated with the positioning procedure.
  • Clause 42 The terminal device of clause 40, wherein the request for the location calculation result comprises at least one of the following: a configuration for a SL-PRS measurement; an indication of a report mode of the location calculation result; or an indication of a response time for the location calculation result.
  • Clause 43 The terminal device of clause 42, wherein the information associated with the location calculation result is transmitted via a ProvideLocationInformation message before the response time expires.
  • Clause 44 The terminal device of clause 40, wherein the request for the location calculation result is received via a RequestLocationInformation message.
  • Clause 45 The terminal device of clause 40, wherein the request for the location measurement data is determined by the terminal device or based on the request for the location calculation result, and the request for the location measurement data comprises at least one of the following: a configuration for a SL-PRS measurement; an indication of a report mode of the location measurement data; or an indication of a response time for the location measurement data.
  • Clause 46 The terminal device of clause 42, wherein the request for the location calculation result further comprises a QoS requirement, and the processor is further configured to: evaluate whether the location calculation result satisfies the QoS requirement; and obtain the information associated with the location calculation result based on the evaluation, wherein the information associated with the location calculation result comprises the location calculation result in the case that the location calculation result satisfies the QoS requirement, and wherein the information associated with the location calculation result comprises an indication that the location calculation result does not satisfy the QoS requirement in the case that the location calculation result does not satisfy the QoS requirement.
  • a network device comprising: a processor; and a transceiver coupled to the processor, wherein the processor is configured to: determine that a server user equipment (UE) is to be determined for a positioning procedure of a target UE; determine the server UE for the positioning procedure; transmit, via the transceiver to the server UE, a request for a location calculation result of the target UE; and receive, via the transceiver from the server UE, information associated with the location calculation result.
  • UE server user equipment
  • Clause 48 The network device of clause 47, wherein the processor is further configured to: transmit, via the transceiver to the target UE, a request for server UE information; and receive, via the transceiver from the target UE, the server UE information, wherein the server UE is determined based on the server UE information.
  • Clause 49 The network device of clause 48, wherein the request for the server UE information comprises: at least one selection criterion for selecting the server UE.
  • Clause 50 The network device of clause 49, wherein the at least one selection criterion comprises at least one of the following: a computing ability criterion; a positioning method criterion; a network coverage criterion; or a link quality criterion.
  • Clause 51 The network device of clause 48, wherein the server UE information comprises: an identity of the server UE.
  • Clause 52 The network device of clause 47, wherein the processor is further configured to: transmit, via the transceiver to the target UE, a request for candidate server UE information comprising information of a set of candidate server UEs and link quality information indicating link qualities between the set of candidate server UEs and at least one anchor UE for the positioning procedure; and receive, via the transceiver from the target UE, the candidate server UE information, wherein the server UE is determined from the set of candidate server UEs based on the information of the set of candidate server UEs and the link quality information.
  • the information of the set of candidate server UEs comprises at least one of the following: identities of candidate server UEs in the set of candidate server UEs; computing abilities of candidate server UEs in the set of candidate server UEs; supported positioning methods of candidate server UEs in the set of candidate server UEs; or network coverage information associated with candidate server UEs in the set of candidate server UEs.
  • Clause 54 The network device of clause 47, wherein the processor is further configured to: transmit, via the transceiver to the server UE, second assistance data for the positioning procedure.
  • the second assistance data comprises at least one of the following: an indication of a role of the server UE in the positioning procedure; an indication of operations to be performed by the server UE; or information associated with the operations to be performed by the server UE.
  • Clause 56 The network device of clause 55, wherein the information associated with operations to be performed by the server UE comprise at least one of the following: a positioning method for the positioning procedure; an identity of a terminal device transmitting a sidelink positioning reference signal (SL-PRS) for the positioning procedure; an identity of a terminal device measuring the SL-PRS; location information of at least one anchor UE in the positioning procedure; at least one location accuracy of the at least one anchor UE; a QoS requirement associated with the positioning procedure; a configuration for the SL-PRS; a configuration for a SL-PRS measurement; or a configuration for a SL-PRS measurement report.
  • SL-PRS sidelink positioning reference signal
  • Clause 57 The network device of clause 47, wherein the processor is further configured to: transmit, via the transceiver to the target UE or to at least one anchor UE for the positioning procedure, first assistance data for the positioning procedure.
  • the first assistance data comprises at least one of the following: information of the server UE; a configuration for a sidelink positioning reference signal (SL-PRS) for the positioning procedure; a configuration for a SL-PRS measurement; or a configuration for a SL-PRS measurement report.
  • SL-PRS sidelink positioning reference signal
  • Clause 59 The network device of clause 58, wherein the information of the server UE comprises at least one of the following: an identity of the server UE; an indication of a role of the server UE in the positioning procedure; or an indication of operations to be performed by the server UE.
  • Clause 60 The network device of clause 58, wherein the configuration for the SL-PRS measurement report comprises at least one of the following: an indication of a report mode; or an indication of a response time for the SL-PRS measurement report.
  • Clause 61 The network device of clause 57, wherein the first assistance data is transmitted via a broadcast signaling or a dedicated signaling.
  • Clause 62 The network device of clause 47, wherein the information associated with the location calculation result comprises at least one of the following: the location calculation result; or an indication that the location calculation result does not satisfy a QoS requirement associated with the positioning procedure.
  • Clause 63 The network device of clause 47, wherein the request for the location calculation result comprises at least one of the following: a configuration for a SL-PRS measurement; an indication of a report mode of the location calculation result; or an indication of a response time for the location calculation result.
  • Clause 64 The network device of clause 63, wherein the request for the location calculation result further comprises a QoS requirement, and the information associated with the location calculation result comprises the location calculation result or an indication that the location calculation result does not satisfy the QoS requirement.
  • Clause 65 The network device of clause 64, wherein in the case that the information associated with the location calculation result comprises the indication that the location calculation result does not satisfy the QoS requirement, the processor is further configured to one of the following: transmit, via the transceiver to the server UE, an updated request for the location calculation result of the target UE comprising an updated QoS requirement associated with the positioning procedure; transmit, via the transceiver to the server UE, an updated request for the location calculation result of the target UE comprising an updated QoS requirement associated with the positioning procedure and an updated configuration for the SL-PRS measurement; transmit, via the transceiver to at least one of the target UE or at least one anchor UE, an updated configuration for the SL-PRS measurement; terminate the positioning procedure and start a further positioning procedure of the target UE; trigger a reselection of the server UE; or trigger a reselection of at least one anchor UE for the positioning procedure.
  • Clause 66 The network device of clause 63, wherein the information associated with the location calculation result is received via a ProvideLocationInformation message before the response time expires.
  • Clause 67 The network device of clause 47, wherein the request for the location calculation result is transmitted via a RequestLocationInformation message.
  • a terminal device comprising: a processor; and a transceiver coupled to the processor, wherein the processor is configured to: receive, via the transceiver, first assistance data for a positioning procedure from a network device or a server user equipment (UE) in the positioning procedure, wherein the terminal device is an anchor UE in the positioning procedure; perform a location measurement of a target UE in the positioning procedure to obtain location measurement data associated with the target UE; and transmit, via the transceiver, the location measurement data to the server UE.
  • UE server user equipment
  • Clause 69 The terminal device of clause 68, wherein the processor is further configured to: receive, via the transceiver from the target UE, information of the server UE.
  • Clause 70 The terminal device of clause 69, wherein the information of the server UE comprises: an identity of the server UE; and an indication of a role of the server UE in the positioning procedure.
  • the first assistance data comprises at least one of the following: information of the server UE; a configuration for a sidelink positioning reference signal (SL-PRS) for the location measurement; a configuration for a SL-PRS measurement; or a configuration for a SL-PRS measurement report.
  • SL-PRS sidelink positioning reference signal
  • Clause 72 The terminal device of clause 71, wherein the information of the server UE comprises at least one of the following: an identity of the server UE; an indication of a role of the server UE in the positioning procedure; or an indication of operations to be performed by the server UE.
  • Clause 73 The terminal device of clause 71, wherein the configuration for the SL-PRS measurement report comprises at least one of the following: an indication of a report mode; or an indication of a response time for the SL-PRS measurement report.
  • Clause 74 The terminal device of clause 68, wherein the first assistance data is received via a broadcast signaling or a dedicated signaling.
  • a method performed by a terminal device comprising: determining, for a positioning procedure in which the terminal device is a target user equipment (UE) , a server UE from a set of candidate server UEs or at least one anchor UE from a set of candidate anchor UEs; and performing one of the following (i) or (ii) : (i) in the case that the server UE is determined, transmitting, to the server UE, a request for anchor UE information indicative of at least one anchor UE among the set of candidate anchor UEs; and receiving the anchor UE information from the server UE; (ii) in the case that the at least one anchor UE is determined, transmitting, to the set of candidate server UEs, a request for link quality information indicative of link qualities between the set of candidate server UEs and the at least one anchor UE; and receiving the link quality information from the set of candidate server UEs.
  • UE target user equipment
  • a method performed by a terminal device comprising: receiving, from a target user equipment (UE) in a positioning procedure, a request for anchor UE information associated with a set of candidate anchor UEs for the positioning procedure or a request for link quality information associated with at least one anchor UE for the positioning procedure; and performing one of the following (i) or (ii) : (i) in the case that the request for the anchor UE information is received, selecting at least one anchor UE from the set of candidate anchor UEs; and transmitting, to the target UE, the anchor UE information indicative of the at least one anchor UE; (ii) in the case that the request for the link quality information is received, determining at least one link quality between the terminal device and the at least one anchor UE; and transmitting, to the target UE, the link quality information indicative of the at least one link quality.
  • UE target user equipment
  • a method performed by a network device comprising: determining that a server user equipment (UE) is to be determined for a positioning procedure of a target UE; determining the server UE for the positioning procedure; transmitting, to the server UE, a request for a location calculation result of the target UE; and receiving, from the server UE, information associated with the location calculation result.
  • UE server user equipment
  • a method performed by a terminal device comprising: receiving first assistance data for a positioning procedure from a network device or a server user equipment (UE) in the positioning procedure, wherein the terminal device is an anchor UE in the positioning procedure; performing a location measurement of a target UE in the positioning procedure to obtain location measurement data associated with the target UE; and transmitting the location measurement data to the server UE.
  • UE user equipment
  • a processor for wireless communication comprising: at least one memory; and a controller coupled with the at least one memory and configured to cause the controller to: determine, at a terminal device for a positioning procedure in which the terminal device is a target user equipment (UE) , a server UE from a set of candidate server UEs or at least one anchor UE from a set of candidate anchor UEs; and perform one of the following (i) or (ii) : (i) in the case that the server UE is determined, transmitting, to the server UE, a request for anchor UE information indicative of at least one anchor UE among the set of candidate anchor UEs; and receiving the anchor UE information from the server UE; (ii) in the case that the at least one anchor UE is determined, transmitting, to the set of candidate server UEs, a request for link quality information indicative of link qualities between the set of candidate server UEs and the at least one anchor UE; and receiving the link quality information from the set of candidate server UEs.
  • UE target user equipment
  • a processor for wireless communication comprising: at least one memory; and a controller coupled with the at least one memory and configured to cause the controller to: receive, at a terminal device from a target user equipment (UE) in a positioning procedure, a request for anchor UE information associated with a set of candidate anchor UEs for the positioning procedure or a request for link quality information associated with at least one anchor UE for the positioning procedure; and perform one of the following (i) or (ii) : (i) in the case that the request for the anchor UE information is received, selecting at least one anchor UE from the set of candidate anchor UEs; and transmitting, to the target UE, the anchor UE information indicative of the at least one anchor UE; (ii) in the case that the request for the link quality information is received, determining at least one link quality between the terminal device and the at least one anchor UE; and transmitting, to the target UE, the link quality information indicative of the at least one link quality.
  • UE target user equipment
  • a processor for wireless communication comprising: at least one memory; and a controller coupled with the at least one memory and configured to cause the controller to: determine, at a network device, that a server user equipment (UE) is to be determined for a positioning procedure of a target UE; determine the server UE for the positioning procedure; transmit, to the server UE, a request for a location calculation result of the target UE; and receive, from the server UE, information associated with the location calculation result.
  • UE server user equipment
  • a processor for wireless communication comprising: at least one memory; and a controller coupled with the at least one memory and configured to cause the controller to: receive, at a terminal device, first assistance data for a positioning procedure from a network device or a server user equipment (UE) in the positioning procedure, wherein the terminal device is an anchor UE in the positioning procedure; perform a location measurement of a target UE in the positioning procedure to obtain location measurement data associated with the target UE; and transmit the location measurement data to the server UE.
  • UE server user equipment
  • Clause 83 A non-transitory computer readable medium having program instructions stored thereon that, when executed by an apparatus, cause the apparatus at least to perform the method of any of clauses 75-78.

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

Abstract

Divers aspects de la présente divulgation concernent le positionnement impliqué dans un équipement utilisateur serveur. Dans un aspect, l'UE cible détermine, pour une procédure de positionnement, un UE serveur ou au moins un UE d'ancrage. Si l'UE serveur est déterminé, l'UE cible transmet, à l'UE serveur, une demande d'informations d'UE d'ancrage indiquant au moins un UE d'ancrage parmi un ensemble d'UE d'ancrage candidats ; et reçoit les informations d'UE d'ancrage envoyées par l'UE serveur. Si ledit UE d'ancrage est déterminé, l'UE cible transmet à un ensemble d'UE serveurs candidats, une demande d'informations de qualité de liaison indiquant des qualités de liaison entre l'ensemble d'UE serveurs candidats et ledit UE d'ancrage ; et reçoit les informations de qualité de liaison depuis l'ensemble d'UE serveurs candidats. De cette manière, la fiabilité et l'efficacité de communication dans la procédure de positionnement peuvent être améliorées.
PCT/CN2023/101698 2023-06-21 2023-06-21 Positionnement impliqué dans un équipement utilisateur serveur WO2024093265A1 (fr)

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Publication number Priority date Publication date Assignee Title
WO2022076181A1 (fr) * 2020-10-07 2022-04-14 Qualcomm Incorporated Sélection d'ancrage pour rapporter une mesure de prs pour positionnement d'ue
WO2022125393A1 (fr) * 2020-12-09 2022-06-16 Qualcomm Incorporated Positionnement d'ue à ue
WO2022150090A1 (fr) * 2021-01-06 2022-07-14 Qualcomm Incorporated Positionnement assisté par liaison latérale
CN115885574A (zh) * 2020-07-07 2023-03-31 高通股份有限公司 用于侧链路辅助定位的目标用户设备推荐的装置和方法

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WO2022076181A1 (fr) * 2020-10-07 2022-04-14 Qualcomm Incorporated Sélection d'ancrage pour rapporter une mesure de prs pour positionnement d'ue
WO2022125393A1 (fr) * 2020-12-09 2022-06-16 Qualcomm Incorporated Positionnement d'ue à ue
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