US20230309066A1 - Autonomous sidelink resource selection - Google Patents

Autonomous sidelink resource selection Download PDF

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Publication number
US20230309066A1
US20230309066A1 US18/020,877 US202118020877A US2023309066A1 US 20230309066 A1 US20230309066 A1 US 20230309066A1 US 202118020877 A US202118020877 A US 202118020877A US 2023309066 A1 US2023309066 A1 US 2023309066A1
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Prior art keywords
sidelink
positioning
reference signal
resource
transmission
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US18/020,877
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English (en)
Inventor
Karthikeyan Ganesan
Robin Thomas
Ankit BHAMRI
Vijay Nangia
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Lenovo Singapore Pte Ltd
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Lenovo Singapore Pte Ltd
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Priority to US18/020,877 priority Critical patent/US20230309066A1/en
Assigned to LENOVO (SINGAPORE) PTE. LTD. reassignment LENOVO (SINGAPORE) PTE. LTD. ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: BHAMRI, ANKIT, NANGIA, VIJAY, THOMAS, ROBIN, GANESAN, KARTHIKEYAN
Publication of US20230309066A1 publication Critical patent/US20230309066A1/en
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/0009—Transmission of position information to remote stations
    • G01S5/0072—Transmission between mobile stations, e.g. anti-collision systems
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
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    • H04W72/02—Selection of wireless resources by user or terminal
    • G—PHYSICS
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    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/87—Combinations of radar systems, e.g. primary radar and secondary radar
    • G01S13/876—Combination of several spaced transponders or reflectors of known location for determining the position of a receiver
    • G—PHYSICS
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    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S13/00—Systems using the reflection or reradiation of radio waves, e.g. radar systems; Analogous systems using reflection or reradiation of waves whose nature or wavelength is irrelevant or unspecified
    • G01S13/74—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems
    • G01S13/76—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted
    • G01S13/765—Systems using reradiation of radio waves, e.g. secondary radar systems; Analogous systems wherein pulse-type signals are transmitted with exchange of information between interrogator and responder
    • G—PHYSICS
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    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/0009—Transmission of position information to remote stations
    • G01S5/0045—Transmission from base station to mobile station
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/0205—Details
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    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/0205—Details
    • G01S5/0236—Assistance data, e.g. base station almanac
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/0284—Relative positioning
    • G01S5/0289—Relative positioning of multiple transceivers, e.g. in ad hoc networks
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/08—Position of single direction-finder fixed by determining direction of a plurality of spaced sources of known location
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/10—Position of receiver fixed by co-ordinating a plurality of position lines defined by path-difference measurements, e.g. omega or decca systems
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/14—Determining absolute distances from a plurality of spaced points of known location
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04L—TRANSMISSION OF DIGITAL INFORMATION, e.g. TELEGRAPHIC COMMUNICATION
    • H04L5/00—Arrangements affording multiple use of the transmission path
    • H04L5/003—Arrangements for allocating sub-channels of the transmission path
    • H04L5/0048—Allocation of pilot signals, i.e. of signals known to the receiver
    • H04L5/0051—Allocation of pilot signals, i.e. of signals known to the receiver of dedicated pilots, i.e. pilots destined for a single user or terminal
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W72/00—Local resource management
    • H04W72/50—Allocation or scheduling criteria for wireless resources
    • H04W72/56—Allocation or scheduling criteria for wireless resources based on priority criteria
    • H04W72/563—Allocation or scheduling criteria for wireless resources based on priority criteria of the wireless resources
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S2205/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S2205/001—Transmission of position information to remote stations
    • G01S2205/008—Transmission of position information to remote stations using a mobile telephone network
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/0009—Transmission of position information to remote stations
    • G01S5/0018—Transmission from mobile station to base station
    • G01S5/0036—Transmission from mobile station to base station of measured values, i.e. measurement on mobile and position calculation on base station
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01S—RADIO DIRECTION-FINDING; RADIO NAVIGATION; DETERMINING DISTANCE OR VELOCITY BY USE OF RADIO WAVES; LOCATING OR PRESENCE-DETECTING BY USE OF THE REFLECTION OR RERADIATION OF RADIO WAVES; ANALOGOUS ARRANGEMENTS USING OTHER WAVES
    • G01S5/00—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations
    • G01S5/02—Position-fixing by co-ordinating two or more direction or position line determinations; Position-fixing by co-ordinating two or more distance determinations using radio waves
    • G01S5/0284—Relative positioning
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W76/00—Connection management
    • H04W76/10—Connection setup
    • H04W76/14—Direct-mode setup
    • 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 subject matter disclosed herein relates generally to wireless communications and more particularly relates to autonomous sidelink resource selection.
  • sidelink resources may be used. In such networks, selected sidelink resources may not be optimal.
  • One embodiment of a method includes receiving, at a sidelink communication device and from a location management function, a request including a plurality of parameters for performing autonomous resource selection for transmission of a sidelink positioning reference signal. In some embodiments, the method includes performing the autonomous resource selection for determining a sidelink resource for the transmission of the sidelink positioning reference signal. In certain embodiments, the method includes determining the sidelink resource based on the autonomous resource selection and based on a priority, a packet delay budget, a reference signal received power, a positioning reference signal offset, a positioning reference signal comb pattern, or a combination thereof.
  • One apparatus for autonomous sidelink resource selection includes a sidelink communication device.
  • the apparatus includes a receiver that receives, from a location management function, a request including a plurality of parameters for performing autonomous resource selection for transmission of a sidelink positioning reference signal.
  • the apparatus includes a processor that: performs the autonomous resource selection for determining a sidelink resource for the transmission of the sidelink positioning reference signal; and determines the sidelink resource based on the autonomous resource selection and based on a priority, a packet delay budget, a reference signal received power, a positioning reference signal offset, a positioning reference signal comb pattern, or a combination thereof.
  • Another embodiment of a method for determining reference signal received power values includes defining, in a sidelink communication device, a trigger.
  • the trigger is triggered by sensing results in a positioning request received from the location management function.
  • the method includes, in response to the trigger being triggered, determining reference signal received power values for destination identifiers indicated in the positioning request.
  • the method includes reporting the reference signal received power values and the destination identifiers via non-access stratum signaling transmitted to the location management function.
  • Another apparatus for determining reference signal received power values includes a sidelink communication device.
  • the apparatus includes a processor that: defines a trigger, wherein the trigger is triggered by sensing results in a positioning request received from the location management function; and, in response to the trigger being triggered, determines reference signal received power values for destination identifiers indicated in the positioning request.
  • the apparatus includes a transmitter that reports the reference signal received power values and the destination identifiers via non-access stratum signaling transmitted to the location management function.
  • a further embodiment of a method for performing a sidelink connection establishment procedure includes receiving, at a first sidelink communication device, information from a location management function.
  • the information includes a destination identifier and a plurality of parameters to facilitate sidelink positioning.
  • the method includes performing a sidelink connection establishment procedure including a discovery procedure for unicast sidelink positioning based on the information from the location management function.
  • the method includes transmitting the plurality of parameters using sidelink radio resource control signaling to a second sidelink communication device based on the destination identifier to facilitate sidelink positioning.
  • a further apparatus for performing a sidelink connection establishment procedure includes a first sidelink communication device.
  • the apparatus includes a receiver that receives information from a location management function. The information includes a destination identifier and a plurality of parameters to facilitate sidelink positioning.
  • the apparatus includes a processor that performs a sidelink connection establishment procedure includes a discovery procedure for unicast sidelink positioning based on the information from the location management function.
  • the apparatus includes a transmitter that transmits the plurality of parameters using sidelink radio resource control signaling to a second sidelink communication device based on the destination identifier to facilitate sidelink positioning.
  • Yet another embodiment of a method for determining parameters includes determining, at a first sidelink communication device, a sidelink positioning reference signal transmission offset or a comb pattern in a resource for a groupcast transmission based on a group member identifier.
  • Yet another apparatus for determining parameters includes a first sidelink communication device.
  • the apparatus includes a processor that determines a sidelink positioning reference signal transmission offset or a comb pattern in a resource for a groupcast transmission based on a group member identifier.
  • a further embodiment of a method for indicating mapping information includes transmitting, from a first sidelink communication device, an indication to a second sidelink communication device.
  • the indication includes mapping information that associates sidelink positioning reference signal occasions with a sidelink positioning technique, a transmission configuration indicator state, quasi-co-location information for receiver combining, or some combination thereof. Transmission of the indication is semi-statically configured using sidelink radio resource control signaling or dynamically using sidelink control information.
  • a further apparatus for indicating mapping information includes a first sidelink communication device.
  • the apparatus includes a transmitter that transmits an indication to a second sidelink communication device.
  • the indication includes mapping information that associates sidelink positioning reference signal occasions with a sidelink positioning technique, a transmission configuration indicator state, quasi-co-location information for receiver combining, or some combination thereof. Transmission of the indication is semi-statically configured using sidelink radio resource control signaling or dynamically using sidelink control information.
  • Another embodiment of a method for autonomous sidelink resource selection includes transmitting, from a location management function, a plurality of parameters for performing autonomous resource selection for transmission of a sidelink positioning reference signal.
  • Another apparatus for autonomous sidelink resource selection includes a user equipment.
  • the apparatus includes a transmitter that transmits a plurality of parameters for performing autonomous resource selection for transmission of a sidelink positioning reference signal.
  • FIG. 1 is a schematic block diagram illustrating one embodiment of a wireless communication system for autonomous sidelink resource selection
  • FIG. 2 is a schematic block diagram illustrating one embodiment of an apparatus that may be used for autonomous sidelink resource selection
  • FIG. 3 is a schematic block diagram illustrating one embodiment of an apparatus that may be used for autonomous sidelink resource selection
  • FIG. 4 is a flow chart diagram illustrating one embodiment of a method for autonomous sidelink resource selection
  • FIG. 5 is a flow chart diagram illustrating one embodiment of a method for determining reference signal received power
  • FIG. 6 is a flow chart diagram illustrating one embodiment of a method for performing a sidelink connection establishment procedure
  • FIG. 7 is a flow chart diagram illustrating one embodiment of a method for determining parameters
  • FIG. 8 is a flow chart diagram illustrating one embodiment of a method for indicating mapping information.
  • FIG. 9 is a flow chart diagram illustrating another embodiment of a method for autonomous sidelink resource selection.
  • embodiments may be embodied as a system, apparatus, method, or program product. Accordingly, embodiments may take the form of an entirely hardware embodiment, an entirely software embodiment (including firmware, resident software, micro-code, etc.) or an embodiment combining software and hardware aspects that may all generally be referred to herein as a “circuit,” “module” or “system.” Furthermore, embodiments may take the form of a program product embodied in one or more computer readable storage devices storing machine readable code, computer readable code, and/or program code, referred hereafter as code. The storage devices may be tangible, non-transitory, and/or non-transmission. The storage devices may not embody signals. In a certain embodiment, the storage devices only employ signals for accessing code.
  • modules may be implemented as a hardware circuit comprising custom very-large-scale integration (“VLSI”) circuits or gate arrays, off-the-shelf semiconductors such as logic chips, transistors, or other discrete components.
  • VLSI very-large-scale integration
  • a module may also be implemented in programmable hardware devices such as field programmable gate arrays, programmable array logic, programmable logic devices or the like.
  • Modules may also be implemented in code and/or software for execution by various types of processors.
  • An identified module of code may, for instance, include one or more physical or logical blocks of executable code which may, for instance, be organized as an object, procedure, or function. Nevertheless, the executables of an identified module need not be physically located together, but may include disparate instructions stored in different locations which, when joined logically together, include the module and achieve the stated purpose for the module.
  • a module of code may be a single instruction, or many instructions, and may even be distributed over several different code segments, among different programs, and across several memory devices.
  • operational data may be identified and illustrated herein within modules, and may be embodied in any suitable form and organized within any suitable type of data structure. The operational data may be collected as a single data set, or may be distributed over different locations including over different computer readable storage devices.
  • the software portions are stored on one or more computer readable storage devices.
  • the computer readable medium may be a computer readable storage medium.
  • the computer readable storage medium may be a storage device storing the code.
  • the storage device may be, for example, but not limited to, an electronic, magnetic, optical, electromagnetic, infrared, holographic, micromechanical, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing.
  • a storage device More specific examples (a non-exhaustive list) of the storage device would include the following: an electrical connection having one or more wires, a portable computer diskette, a hard disk, a random access memory (“RAM”), a read-only memory (“ROM”), an erasable programmable read-only memory (“EPROM” or Flash memory), a portable compact disc read-only memory (“CD-ROM”), an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
  • a computer readable storage medium may be any tangible medium that can contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
  • Code for carrying out operations for embodiments may be any number of lines and may be written in any combination of one or more programming languages including an object oriented programming language such as Python, Ruby, Java, Smalltalk, C++, or the like, and conventional procedural programming languages, such as the “C” programming language, or the like, and/or machine languages such as assembly languages.
  • the code may execute entirely on the user's computer, partly on the user's computer, as a stand-alone software package, partly on the user's computer and partly on a remote computer or entirely on the remote computer or server.
  • the remote computer may be connected to the user's computer through any type of network, including a local area network (“LAN”) or a wide area network (“WAN”), or the connection may be made to an external computer (for example, through the Internet using an Internet Service Provider).
  • LAN local area network
  • WAN wide area network
  • Internet Service Provider an Internet Service Provider
  • the code may also be stored in a storage device that can direct a computer, other programmable data processing apparatus, or other devices to function in a particular manner, such that the instructions stored in the storage device produce an article of manufacture including instructions which implement the function/act specified in the schematic flowchart diagrams and/or schematic block diagrams block or blocks.
  • the code may also be loaded onto a computer, other programmable data processing apparatus, or other devices to cause a series of operational steps to be performed on the computer, other programmable apparatus or other devices to produce a computer implemented process such that the code which execute on the computer or other programmable apparatus provide processes for implementing the functions/acts specified in the flowchart and/or block diagram block or blocks.
  • each block in the schematic flowchart diagrams and/or schematic block diagrams may represent a module, segment, or portion of code, which includes one or more executable instructions of the code for implementing the specified logical function(s).
  • FIG. 1 depicts an embodiment of a wireless communication system 100 for autonomous sidelink resource selection.
  • the wireless communication system 100 includes remote units 102 and network units 104 . Even though a specific number of remote units 102 and network units 104 are depicted in FIG. 1 , one of skill in the art will recognize that any number of remote units 102 and network units 104 may be included in the wireless communication system 100 .
  • the remote units 102 may include computing devices, such as desktop computers, laptop computers, personal digital assistants (“PDAs”), tablet computers, smart phones, smart televisions (e.g., televisions connected to the Internet), set-top boxes, game consoles, security systems (including security cameras), vehicle on-board computers, network devices (e.g., routers, switches, modems), aerial vehicles, drones, or the like.
  • the remote units 102 include wearable devices, such as smart watches, fitness bands, optical head-mounted displays, or the like.
  • the remote units 102 may be referred to as subscriber units, mobiles, mobile stations, users, terminals, mobile terminals, fixed terminals, subscriber stations, UE, user terminals, a device, or by other terminology used in the art.
  • the remote units 102 may communicate directly with one or more of the network units 104 via UL communication signals. In certain embodiments, the remote units 102 may communicate directly with other remote units 102 via sidelink communication.
  • the network units 104 may be distributed over a geographic region.
  • a network unit 104 may also be referred to and/or may include one or more of an access point, an access terminal, a base, a base station, a location server, a core network (“CN”), a radio network entity, a Node-B, an evolved node-B (“eNB”), a 5G node-B (“gNB”), a Home Node-B, a relay node, a device, a core network, an aerial server, a radio access node, an access point (“AP”), new radio (“NR”), a network entity, an access and mobility management function (“AMF”), a unified data management (“UDM”), a unified data repository (“UDR”), a UDM/UDR, a policy control function (“PCF”), a radio access network (“RAN”), a network slice selection function (“NSSF”), an operations, administration, and management (“OAM”), a session management function (“SMF”), a user
  • the network units 104 are generally part of a radio access network that includes one or more controllers communicably coupled to one or more corresponding network units 104 .
  • the radio access network is generally communicably coupled to one or more core networks, which may be coupled to other networks, like the Internet and public switched telephone networks, among other networks. These and other elements of radio access and core networks are not illustrated but are well known generally by those having ordinary skill in the art.
  • the wireless communication system 100 is compliant with NR protocols standardized in third generation partnership project (“3GPP”), wherein the network unit 104 transmits using an OFDM modulation scheme on the downlink (“DL”) and the remote units 102 transmit on the uplink (“UL”) using a single-carrier frequency division multiple access (“SC-FDMA”) scheme or an orthogonal frequency division multiplexing (“OFDM”) scheme.
  • 3GPP third generation partnership project
  • SC-FDMA single-carrier frequency division multiple access
  • OFDM orthogonal frequency division multiplexing
  • the wireless communication system 100 may implement some other open or proprietary communication protocol, for example, WiMAX, institute of electrical and electronics engineers (“IEEE”) 802.11 variants, global system for mobile communications (“GSM”), general packet radio service (“GPRS”), universal mobile telecommunications system (“UMTS”), long term evolution (“LTE”) variants, code division multiple access 2000 (“CDMA2000”), Bluetooth®, ZigBee, Sigfoxx, among other protocols.
  • WiMAX institute of electrical and electronics engineers
  • IEEE institute of electrical and electronics engineers
  • GSM global system for mobile communications
  • GPRS general packet radio service
  • UMTS universal mobile telecommunications system
  • LTE long term evolution
  • CDMA2000 code division multiple access 2000
  • Bluetooth® ZigBee
  • ZigBee ZigBee
  • Sigfoxx among other protocols.
  • the network units 104 may serve a number of remote units 102 within a serving area, for example, a cell or a cell sector via a wireless communication link.
  • the network units 104 transmit DL communication signals to serve the remote units 102 in the time, frequency, and/or spatial domain.
  • a remote unit 102 may receive, at a sidelink communication device and from a location management function, a request including a plurality of parameters for performing autonomous resource selection for transmission of a sidelink positioning reference signal. In some embodiments, the remote unit 102 may perform the autonomous resource selection for determining a sidelink resource for the transmission of the sidelink positioning reference signal. In certain embodiments, the remote unit 102 may determine the sidelink resource based on the autonomous resource selection and based on a priority, a packet delay budget, a reference signal received power, a positioning reference signal offset, a positioning reference signal comb pattern, or a combination thereof. Accordingly, the remote unit 102 may be used for autonomous sidelink resource selection.
  • a remote unit 102 may define, in a sidelink communication device, a trigger.
  • the trigger is triggered by sensing results in a positioning request received from the location management function.
  • the remote unit 102 may, in response to the trigger being triggered, determine reference signal received power values for destination identifiers indicated in the positioning request.
  • the remote unit 102 may report the reference signal received power values and the destination identifiers via non-access stratum signaling transmitted to the location management function. Accordingly, the remote unit 102 may be used for determining reference signal received power values.
  • a remote unit 102 may receive, at a first sidelink communication device, information from a location management function.
  • the information includes a destination identifier and a plurality of parameters to facilitate sidelink positioning.
  • the remote unit 102 may perform a sidelink connection establishment procedure including a discovery procedure for unicast sidelink positioning based on the information from the location management function.
  • the remote unit 102 may transmit the plurality of parameters using sidelink radio resource control signaling to a second sidelink communication device based on the destination identifier to facilitate sidelink positioning. Accordingly, the remote unit 102 may be used for performing a sidelink connection establishment procedure.
  • a remote unit 102 may determine, at a first sidelink communication device, a sidelink positioning reference signal transmission offset or a comb pattern in a resource for a groupcast transmission based on a group member identifier. Accordingly, the remote unit 102 may be used for determining parameters.
  • a remote unit 102 may transmit, from a first sidelink communication device, an indication to a second sidelink communication device.
  • the indication includes mapping information that associates sidelink positioning reference signal occasions with a sidelink positioning technique, a transmission configuration indicator state, quasi-co-location information for receiver combining, or some combination thereof. Transmission of the indication is semi-statically configured using sidelink radio resource control signaling or dynamically using sidelink control information. Accordingly, the remote unit 102 may be used for indicating mapping information.
  • a network unit 104 may transmit, from a location management function, a plurality of parameters for performing autonomous resource selection for transmission of a sidelink positioning reference signal. Accordingly, the network unit 104 may be used for autonomous sidelink resource selection.
  • FIG. 2 depicts one embodiment of an apparatus 200 that may be used for autonomous sidelink resource selection.
  • the apparatus 200 includes one embodiment of the remote unit 102 .
  • the remote unit 102 may include a processor 202 , a memory 204 , an input device 206 , a display 208 , a transmitter 210 , and a receiver 212 .
  • the input device 206 and the display 208 are combined into a single device, such as a touchscreen.
  • the remote unit 102 may not include any input device 206 and/or display 208 .
  • the remote unit 102 may include one or more of the processor 202 , the memory 204 , the transmitter 210 , and the receiver 212 , and may not include the input device 206 and/or the display 208 .
  • the processor 202 may include any known controller capable of executing computer-readable instructions and/or capable of performing logical operations.
  • the processor 202 may be a microcontroller, a microprocessor, a central processing unit (“CPU”), a graphics processing unit (“GPU”), an auxiliary processing unit, a field programmable gate array (“FPGA”), or similar programmable controller.
  • the processor 202 executes instructions stored in the memory 204 to perform the methods and routines described herein.
  • the processor 202 is communicatively coupled to the memory 204 , the input device 206 , the display 208 , the transmitter 210 , and the receiver 212 .
  • the memory 204 in one embodiment, is a computer readable storage medium.
  • the memory 204 includes volatile computer storage media.
  • the memory 204 may include a RAM, including dynamic RAM (“DRAM”), synchronous dynamic RAM (“SDRAM”), and/or static RAM (“SRAM”).
  • the memory 204 includes non-volatile computer storage media.
  • the memory 204 may include a hard disk drive, a flash memory, or any other suitable non-volatile computer storage device.
  • the memory 204 includes both volatile and non-volatile computer storage media.
  • the memory 204 also stores program code and related data, such as an operating system or other controller algorithms operating on the remote unit 102 .
  • the input device 206 may include any known computer input device including a touch panel, a button, a keyboard, a stylus, a microphone, or the like.
  • the input device 206 may be integrated with the display 208 , for example, as a touchscreen or similar touch-sensitive display.
  • the input device 206 includes a touchscreen such that text may be input using a virtual keyboard displayed on the touchscreen and/or by handwriting on the touchscreen.
  • the input device 206 includes two or more different devices, such as a keyboard and a touch panel.
  • the display 208 may include any known electronically controllable display or display device.
  • the display 208 may be designed to output visual, audible, and/or haptic signals.
  • the display 208 includes an electronic display capable of outputting visual data to a user.
  • the display 208 may include, but is not limited to, a liquid crystal display (“LCD”), a light emitting diode (“LED”) display, an organic light emitting diode (“OLED”) display, a projector, or similar display device capable of outputting images, text, or the like to a user.
  • the display 208 may include a wearable display such as a smart watch, smart glasses, a heads-up display, or the like.
  • the display 208 may be a component of a smart phone, a personal digital assistant, a television, a table computer, a notebook (laptop) computer, a personal computer, a vehicle dashboard, or the like.
  • the display 208 includes one or more speakers for producing sound.
  • the display 208 may produce an audible alert or notification (e.g., a beep or chime).
  • the display 208 includes one or more haptic devices for producing vibrations, motion, or other haptic feedback.
  • all or portions of the display 208 may be integrated with the input device 206 .
  • the input device 206 and display 208 may form a touchscreen or similar touch-sensitive display.
  • the display 208 may be located near the input device 206 .
  • the receiver 212 receives, from a location management function, a request including a plurality of parameters for performing autonomous resource selection for transmission of a sidelink positioning reference signal.
  • the processor 202 performs the autonomous resource selection for determining a sidelink resource for the transmission of the sidelink positioning reference signal; and determines the sidelink resource based on the autonomous resource selection and based on a priority, a packet delay budget, a reference signal received power, a positioning reference signal offset, a positioning reference signal comb pattern, or a combination thereof.
  • the processor 202 defines a trigger, wherein the trigger is triggered by sensing results in a positioning request received from the location management function; and, in response to the trigger being triggered, determines reference signal received power values for destination identifiers indicated in the positioning request.
  • the transmitter 210 reports the reference signal received power values and the destination identifiers via non-access stratum signaling transmitted to the location management function.
  • the receiver 212 receives information from a location management function.
  • the information includes a destination identifier and a plurality of parameters to facilitate sidelink positioning.
  • the processor 202 performs a sidelink connection establishment procedure includes a discovery procedure for unicast sidelink positioning based on the information from the location management function.
  • the transmitter 210 transmits the plurality of parameters using sidelink radio resource control signaling to a second sidelink communication device based on the destination identifier to facilitate sidelink positioning.
  • the processor 202 determines a sidelink positioning reference signal transmission offset or a comb pattern in a resource for a groupcast transmission based on a group member identifier.
  • the transmitter 210 transmits an indication to a second sidelink communication device.
  • the indication includes mapping information that associates sidelink positioning reference signal occasions with a sidelink positioning technique, a transmission configuration indicator state, quasi-co-location information for receiver combining, or some combination thereof. Transmission of the indication is semi-statically configured using sidelink radio resource control signaling or dynamically using sidelink control information.
  • the remote unit 102 may have any suitable number of transmitters 210 and receivers 212 .
  • the transmitter 210 and the receiver 212 may be any suitable type of transmitters and receivers.
  • the transmitter 210 and the receiver 212 may be part of a transceiver.
  • FIG. 3 depicts one embodiment of an apparatus 300 that may be used for autonomous sidelink resource selection.
  • the apparatus 300 includes one embodiment of the network unit 104 .
  • the network unit 104 may include a processor 302 , a memory 304 , an input device 306 , a display 308 , a transmitter 310 , and a receiver 312 .
  • the processor 302 , the memory 304 , the input device 306 , the display 308 , the transmitter 310 , and the receiver 312 may be substantially similar to the processor 202 , the memory 204 , the input device 206 , the display 208 , the transmitter 210 , and the receiver 212 of the remote unit 102 , respectively.
  • the transmitter 310 that transmits a plurality of parameters for performing autonomous resource selection for transmission of a sidelink positioning reference signal.
  • sidelink positioning may help with a precise positioning measurement for indoor factory environments and vehicles positioning Accuracy and latency may vary widely between an indoor factory environment and vehicle to everything (“V2X”) (see Tables 1 and 2 for certain accuracy and latency requirements).
  • sidelink adds a dimension by calculating relative positioning between objects and/or vehicles.
  • a number of anchor nodes transmitting reference signals on sidelink (“SL”) for positioning e.g., SL positioning reference signal (“PRS”) may play an important role for high accuracy positioning.
  • PRS SL positioning reference signal
  • Certain embodiments described herein may use resource allocation of transmitting sidelink positioning reference signals using Mode 2, information exchange between a location management function (“LMF”) and a sidelink user equipment (“UE”) to aid Mode 2 resource allocation for the transmission of sidelink PRS, a method of sharing sidelink sensing results (e.g., reference signal received power (“RSRP”) of a destination to LMF and unicast connection for tracking positioning between peer UEs).
  • LMF location management function
  • UE sidelink user equipment
  • RSRP reference signal received power
  • 5G positioning nodes are infrastructure equipment deployed in the service area to enhance positioning capabilities (e.g. beacons deployed on the perimeter of a rendezvous area or on the side of a warehouse). indicates data missing or illegible when filed
  • an eNB and/or gNB may be used to refer to a base station, but it may be replaceable by any other radio access node (e.g., base station (“BS”), eNB, gNB, access point (“AP”), new radio (“NR”), and so forth).
  • BS base station
  • eNB evolved node
  • gNB access point
  • NR new radio
  • 5G fifth generation
  • embodiments herein may be equally applicable to other mobile communication systems supporting serving cells and/or carriers being configured for sidelink communication over a UE to UE (“PC5”) interface.
  • SL positioning may be estimated with any SL reference signal (“RS”) (“SL-RS”).
  • RS SL reference signal
  • the type of SL-RS to be used for a positioning estimate may be provided to a UE either by a LMF providing the SL-RS to a SL UEs or by a transmit (“TX”) UE providing the SL-RS to receive (“RX”) UEs.
  • an anchor UE is a UE whose own position is known accurately.
  • non-anchor UEs are UEs with unknown position and/or location information, or with a certain positioning error threshold.
  • a target UE is a UE whose position is yet to be determined.
  • a SL PRS transmission may be: 1) one to one (e.g., TX UE-RX UE, Model A); 2) one to many (e.g., TX UE-RX UEs, Model B), where a target UE transmits SL PRS to many anchor and/or non-anchor UEs; 3) many to one (e.g., RX UEs-TXUE, Model C), where many anchor and/or non-anchor UEs transmit SL PRS towards a target UE; and/or 4) a bidirectional SL PRS transmission where SL PRS is transmitted by a target UE towards anchor and/or non-anchor UEs and as well SL PRS transmitted by anchor and/or non-anchor UEs towards the target UE.
  • a long term evolution (“LTE”) positioning protocol (“LPP”) signaling and/or gNB downlink signaling may indicate a Model A, B, or C to be used for SL positioning, SL positioning technique, and so forth.
  • LTE long term evolution
  • LPP positioning protocol
  • a TX UE is a UE transmitting SL PRS in which the TX UE may be a target UE whose position is yet to be determined.
  • a TX UE may be an anchor and/or non-anchor UE that transmits SL PRS towards a target UE.
  • a resource pool bandwidth (e.g., including locations of resource blocks (“RBs”) for a resource pool (e.g., starting physical resource block (“PRB”) with respect to Point A—the absolute frequency of a reference resource block with its lowest subcarrier may be known as Point A), a number of RBs or a bandwidth, SL PRS subcarrier spacing, a SL PRS cyclic prefix) for SL PRS transmission or a SL PRS bandwidth may be configured across a SL bandwidth part (“BWP”) and/or SL carriers for wideband SL PRS transmission.
  • BWP SL bandwidth part
  • a resource pool and/or SL PRS bandwidth for each carrier may be provided and multiple sidelink carriers may be configured per UE for a SL PRS transmission.
  • a number of symbols used in a slot for SL PRS transmission may be configured, including a SL PRS resource element (“RE”) and/or comb offset with respect to each member in a group, SL PRS comb pattern, SL PRS periodicity and slot offset (e.g., for PRS resource set), repetition pattern and/or factor, resource time gap, SL PRS transmit power related parameters, spatial information such as quasi-collocation (“QCL”) relation information (e.g., QCL reference RS, QCL type and/or property of SL-PRS resource) or spatial relation information (e.g., transmission configuration indicator (“TCI”) state or use same spatial transmission filter as the spatial reception filter used to receive a reference RS (e.g., SL RS)), and/or SL muting pattern.
  • QCL quasi-collocation
  • TCI transmission configuration indicator
  • SL assistance data may include a mapping of positioning accuracy an latency to priority and remaining positioning delay budget (“PDB”), SL PRS transmission occasions per resource pool, number of subchannels of SL PRS transmission per resource pool, SL positioning technique—time difference of arrival (“TDOA”), angle of departure (“AoD”), angle of arrival (“AoA”), round trip time (“RTT”), and so forth, SL positioning type—either Model A or Model B or Model C, report configuration, source-destination identifier (“ID”) information for SL PRS transmission or source-destination group ID, minimum communication range (“MCR”), anchor UE positioning information (e.g., depends on network or UE based positioning or relative positioning) and so forth.
  • PC5 radio resource control (“RRC”) signaling may carry one or more items of information described herein about a SL PRS resource configuration for unicast transmission.
  • a PRS offset is a frequency (e.g., RE and/or comb) offset from a lowest RB of the resource pool or sidelink BWP.
  • a PDB may refer to a time required to obtain a first fix of a UE's position estimate.
  • a destination ID may be referred to as a UE ID.
  • Mode 2 parameters may be used for sensing and resource selection.
  • a LMF may provide a sidelink UE with one or more parameters to aid in autonomous resource allocation for sidelink PRS transmission for a configured sidelink positioning technique that includes PDB (e.g., T2 min) to be used by a TX UE for selecting the sidelink PRS resource for transmission, priority values to be signaled in sidelink control information (“SCI”) and to be used for selecting resources and latency bounds (e.g., boundaries, ranges) for sidelink positioning report transmission between sidelink UEs.
  • PDB e.g., T2 min
  • SCI sidelink control information
  • the LMF may provide a location accuracy (e.g., where the accuracy may contain vertical accuracy and/or horizontal accuracy; lateral, latitude, longitudinal, and/or altitude accuracy) and a latency of a sidelink positioning technique and the sidelink UE may derive one or more parameters such as PDB (e.g., T2 min) for sidelink PRS transmission, priority values and latency bounds for the sidelink positioning report transmission between sidelink UEs.
  • PDB e.g., T2 min
  • the LMF may provide a sidelink UE with a PC5 quality indicator (“PQI”) value for sidelink positioning and the sidelink UE may contain a configured table that maps the PQI associated with a certain positioning accuracy and latency.
  • PQI PC5 quality indicator
  • the LMF may provide a sidelink UE with one or more resource pool IDs and/or a number of subchannels in total or per each resource pool, and associated parameters like PRS bandwidth, sidelink BWP IDs, sidelink carrier IDs, and a reference signal to be used for determining a target-UE's location estimate using sidelink positioning.
  • sidelink PRS transmission may be from one to many (e.g., TX UE-Rx UEs), many to one (e.g., RX UEs-Tx UE), and/or a bidirectional sidelink PRS transmission.
  • a sidelink UE may be provided as cast type indicator as shown in Table 3.
  • Certain reporting type configurations may include aperiodic and periodic reporting intervals.
  • a source L2 ID and destination L2 ID to be used for sidelink PRS transmission may be used.
  • the one or more parameters may include a resource reservation interval, a resource reservation period, a sidelink positioning technique like TDOA, AoD, and so forth.
  • an amount of available resources does not match available data to be transmitted from the higher layers of a UE, and, therefore, the UE segments the data and transmits in an available contiguous resource found as a result of autonomous resource selection. Segmented data may be transmitted in a next available resource found as a result of reservation from earlier transmission or based on a new candidate resource set from another resource trigger and/or retrigger.
  • higher layers of a TX UE may trigger resource selection and/or reselection based on a sidelink positioning request and/or report received from a LMF.
  • one or more resource selections and/or reselections may be triggered at a same time slot or at different time slot for each resource pool in a BWP and carrier provided by the LMF.
  • a UE may map a sidelink positioning bandwidth that is signaled from a LMF as a function of available resource pools and a size of each resource pool for sidelink PRS transmission may be used to determine a number of candidate resource pools for contiguous sidelink PRS transmission.
  • a TX UE transmits a sidelink PRS transmission request to other RX UEs based on a request received from a LMF for many to one groupcast sidelink PRS transmission.
  • the corresponding sidelink PRS transmission request to other RX UEs in SCI may include a sidelink PRS bandwidth and/or resource pool ID configuration.
  • candidate resource selection may be performed per a predefined procedure in a candidate resource pool in which a UE decodes SCI from neighboring UEs.
  • a UE may be configured with one or more PRS offsets for sidelink PRS transmission and the UE may decode SCI and check a PRS offset in every slot as part of sensing.
  • the UE in candidate resource selection, the UE reports a set of candidate resources belonging to a resource pool per PRS offset sorted based on estimated averaged RSRP values in each of the candidate resources (e.g., RBs and/or subchannels).
  • a UE decodes SCI and checks a PRS offset in every slot as part of sensing and as part of a candidate resource selection procedure.
  • the UE reports a candidate resource set and candidate PRS offsets for transmission of sidelink PRS.
  • a medium access control (“MAC”) of the UE may randomly select the PRS offset within candidate PRS offsets of the candidate resource set for the transmission of sidelink PRS.
  • a UE after selecting a PRS offset in a suitable resource for sidelink PRS transmission, selects one or more muting patterns for sidelink PRS transmission in a slot according to the PRS offset used by the neighboring UEs in the same slot.
  • a PRS muting pattern of UE #1 that transmit sidelink PRS with PRS offset #1 in slot #2 ⁇ PRS offset #2, PRS offset #3 ⁇ .
  • selection of a muting pattern is according to a highest interference of a sidelink PRS offset in a slot transmitted by neighboring UEs.
  • the PRS muting pattern may define time locations for which a SL PRS resource is expected to not be transmitted (e.g., empty and/or zero-power resource elements) and may correspond to SL PRS transmission from neighboring UEs (e.g., including from RX UEs receiving the sidelink PRS transmission request) thus enabling high signal to interference ratio (“SIR”) conditions when receiving neighbor-cell SL PRS.
  • SIR signal to interference ratio
  • a specific resource pool for PRS resources is configured, where multiplexing with other RSs and/or data is not allowed.
  • a single resource pool for PRS resources and data may be configured.
  • DCI downlink control information
  • a higher layer may configure a corresponding RS type for reporting RSRP.
  • a physical sidelink control channel (“PSCCH”) RSRP (“PSCCH-RSRP”) may be used.
  • PSSCH physical sidelink shared channel
  • PRS RSRP (“PRS-RSRP”) may be used.
  • one or more combinations for RSRP reporting may be configured.
  • a single resource pool for PRS resources and data may be configured.
  • time-domain and/or frequency domain multiplexing between PRS and data and/or other RSs may be allowed.
  • a single resource pool for PRS resources and data may be configured depending on positioning accuracy requirements.
  • time-domain and/or frequency domain multiplexing between PRS and data and/or other RSs may be allowed. For example, if accuracy requirements are not stringent, then it may be allowed to multiplex PRS with data or other RSs in frequency domains within a symbol.
  • a medium access control (“MAC”) layer of a UE after receiving a candidate resource set from each resource pool from multiple BWPs and/or carriers, may select a suitable resource for PRS transmission based on one or more of the following: 1) the UE maximizes selection of contiguous resources from multiple candidate resource sets for sidelink PRS transmission at the same time within a T2 min; 2) the UE may reserve one or more resources and PRS offsets for sidelink PRS transmission in a previous transmission within a PDB if the contiguous resource for sidelink PRS transmission cannot be determined; and/or 3) the UE report may contain a timestamp or a sidelink slot number (and possibly system frame number (“SFN”)) along with other measurement results transmitted to a LMF.
  • SFN system frame number
  • 1st SCI transmits sensing related information in a broadcast manner conveying a resource occupancy.
  • the 1st SCI contains one or more details related to sidelink positioning resource occupancy like a number of subchannels occupied, a cast type indicating the sidelink PRS transmission, a PRS offset, a PRS muting pattern, a comb pattern, a periodicity, a repetition, and/or PRS beam direction to allow beam-based sensing.
  • the beam direction may be indicated with a TCI index that may be common across UEs within a group.
  • sensing results containing RSRP values of a source-destination may be shared with a LMF.
  • sidelink UEs configured for mode 2 resource allocation may decode SCI from neighboring UEs in every slot and may measure RSRP values in the sidelink resources that may be reported to the LMF as part of a passive sidelink positioning result along with corresponding UE IDs.
  • a new ‘sensing result’ trigger may be used at a higher layer of the UE, where the trigger is based on a sidelink positioning request (e.g., ‘sensing results’) received from the LMF.
  • the LMF may request that UEs report sensing results containing estimated averaged or last RSRP values and corresponding source-destination L2 IDs via non-access stratum (“NAS”) signaling transmitted to the LMF.
  • NAS non-access stratum
  • a positioning request from the LMF may contain one or more parameters like resource pool IDs, SL BWPs and/or carriers, a sensing window, a destination group ID, a source-destination ID, a reference signal type to be used for estimating RSRP, an RSRP threshold, and/or a minimum communication range (“MCR”).
  • parameters like resource pool IDs, SL BWPs and/or carriers, a sensing window, a destination group ID, a source-destination ID, a reference signal type to be used for estimating RSRP, an RSRP threshold, and/or a minimum communication range (“MCR”).
  • higher layer new trigger estimates and reports may be either averaged over multiple RSRP values or contain only latest estimated RSRP values of source-destination IDs or group member RSRP values for certain destination group IDs.
  • a UE may report averaged or last estimated RSRP values of source-destination IDs within a configured RSRP threshold or MCR value.
  • a LMF may configure a UE with a periodic or an aperiodic sidelink positioning report containing ‘sensing results’. Based on the report, the UE may use a newly defined trigger to estimate RSRP values as described herein.
  • a UE may report its current zone ID and a zone ID of other neighboring UEs along with source-destination IDs from last decoded SCIs.
  • a gNB may share a corresponding zone configuration.
  • a UE report may contain a timestamp or sidelink slot number (and possibly SFN) along with other measurement results.
  • one or more combination of elements and/or parameters described herein may be reported to a LMF.
  • a UE report may contain corresponding beam directions where sensing is done.
  • beam directions may be established with respect to a common RS ID across UEs within a group.
  • RSRPQ reference signal received quality
  • SINR signal to interference and noise ratio
  • PC5 RRC connection establishment may be made for unicast links for a tracking purpose.
  • the UE is provided with mapping information including a positioning service type to destination layer 2 ID.
  • mapping information including a positioning service type to destination layer 2 ID.
  • a PC5 connection establishment between a TX UE and a Rx UE may be triggered based on a request from a LMF.
  • the LMF may request a sidelink positioning report by providing information including a source-destination L2 ID.
  • Sidelink positioning reporting information provided to the LMF may include a relative or an absolute position between peer UEs.
  • an absolute position of the TX UE is provided and information about anchor UEs.
  • a PC5 unicast bearer for sidelink positioning may be unidirectional or bidirectional and may not be configured to report a sidelink buffer status report (“BSR”) to a gNB for getting mode 1 resources.
  • BSR sidelink buffer status report
  • a UE capability corresponding to a supported sidelink positioning technique like TDoA, AoD, AoA, and so forth may be exchanged using PC5 RRC signaling as part of a connection establishment.
  • TX UE absolute positioning information may be signaled to an RX UE aiding in a UE-based positioning method at an RX UE.
  • the RX UE may query the TX UE's absolute positioning information with a request sent to an LMF with the TX UE's sidelink identity (e.g., source ID or UE to network (“Uu”) identity) using NAS signaling.
  • sidelink identity e.g., source ID or UE to network (“Uu”) identity
  • a TX UE may make a request for absolute positioning information from an RX UE (e.g., to aid a UE-based positioning method at the TX UE).
  • a TX UE may signal one or more parameters such as sidelink PRS offset, PRS comb pattern, periodicity for each sidelink PRS transmission resource, a sidelink PRS bandwidth, a resource pool, a BWP, carriers, a reporting configuration such as positioning method to be used, absolute or relative positioning, a periodicity, and so forth.
  • parameters such as sidelink PRS offset, PRS comb pattern, periodicity for each sidelink PRS transmission resource, a sidelink PRS bandwidth, a resource pool, a BWP, carriers, a reporting configuration such as positioning method to be used, absolute or relative positioning, a periodicity, and so forth.
  • an RX UE may periodically report estimated positioning information from a sidelink PRS using PC5 RRC, MAC CE, and/or physical sidelink feedback channel (“PSFCH”).
  • a TX UE may transmit sidelink positioning information to a LMF.
  • a TX UE and an RX UE may exchange absolute positioning information using PC5 RRC signaling along with sidelink PRS transmission and reporting of sidelink positioning using sidelink PRS between them.
  • the TX UE-RX UE may exchange absolute positioning information using higher layer signaling with less periodicity compared to that of a physical layer sidelink PRS transmission and corresponding positioning determination.
  • a TX-RX UE may exchange absolute positioning information with a second periodicity while sidelink PRS has a 10 ms periodicity.
  • radio link failure detection of unicast sidelink positioning link may be based on one or more methods such as a sidelink PRS-RSRP value being below certain configured threshold and/or a positioning value received from an RX UE exceeds configured error threshold. Radio link failure for a source-destination ID may be reported to a LMF via NAS signaling.
  • a TX UE may trigger a request for sidelink PRS transmission from one or more RX UEs and the request may be signaled in MAC CE or SCI (e.g., 1st SCI or 2nd SCI) and there may be a corresponding sidelink slot number (and possibly SFN) for receiving sidelink PRS.
  • SCI e.g., 1st SCI or 2nd SCI
  • An RX UE may implicitly calculate a sidelink PRS offset based on an internal group member ID.
  • the RX UE may also implicitly calculate its sidelink PRS muting pattern based on the internal group member ID and/or indicated sidelink PRS muting pattern corresponding to the sidelink PRS resource set.
  • beamforming information may be used for sidelink PRS+radio link monitoring (“RLM”) for sidelink PRS.
  • RLM radio link monitoring
  • beam establishment for unicast sidelink positioning may be performed with a sidelink RS such as CSI-RS, synchronization signal block (“SSB”), and/or SL sounding reference signal (“SRS”) and the TX UE may configure a sidelink TCI table based on its supported configuration of a plurality of sidelink reference signals such at CSI-RS, SSB, PRS, demodulation reference signal (“DMRS”), phase tracking reference signal (“PTRS”), and so forth.
  • a TX UE may signal a dedicated TCI table configuration to be used for sidelink PRS using PC5 RRC signaling.
  • a MAC control element (“CE”) may include signaling a TCI table configuration along with a corresponding destination ID.
  • an RX UE may receive signaling with a mapping of each sidelink PRS occasion to a sidelink positioning technique, to a corresponding TCI state, and/or with QCL information for receiver combining purpose.
  • the signaling may be semi-static using PC5 RRC and/or dynamic using SCI.
  • PRS occasion #1 corresponds to sidelink positioning method of TDOA
  • PRS occasion #2 corresponds to sidelink positioning method of AoD, and so forth.
  • the positioning request may include a source L2 ID of the target UE and the destination L2 ID may be transmitted for anchor UEs to transmit SL PRS.
  • a SL PRS resource set may be configured per destination L2 ID.
  • a report to the LMF may include the source L2 ID and the destination L2 ID for which the positioning request was transmitted.
  • the report from the target UE may multiplex a report from multiple source and/or destination L2 IDs. It should be noted that any of the embodiments or parts of the embodiments described herein may be combined together.
  • FIG. 4 is a flow chart diagram illustrating one embodiment of a method 400 for autonomous sidelink resource selection.
  • the method 400 is performed by an apparatus, such as the remote unit 102 .
  • the method 400 may be performed by a processor executing program code, for example, a microcontroller, a microprocessor, a CPU, a GPU, an auxiliary processing unit, a FPGA, or the like.
  • the method 400 includes receiving 402 , at a sidelink communication device and from a location management function, a request including a plurality of parameters for performing autonomous resource selection for transmission of a sidelink positioning reference signal. In some embodiments, the method 400 includes performing 404 the autonomous resource selection for determining a sidelink resource for the transmission of the sidelink positioning reference signal. In certain embodiments, the method 400 includes determining 406 the sidelink resource based on the autonomous resource selection and based on a priority, a packet delay budget, a reference signal received power, a positioning reference signal offset, a positioning reference signal comb pattern, or a combination thereof.
  • the plurality of parameters comprise a sidelink positioning quality indicator, a priority value and positioning delay budget to be used for resource selection of the sidelink positioning reference signal, a latency range for sidelink report transmission, reception, or a combination thereof between sidelink user equipments, a resource pool configuration, a reference signal type for sensing, a source identifier, a destination identifier, a cast type, a positioning technique, a report configuration for reporting a positioning value, or some combination thereof.
  • the method 400 further comprises configurating a set of positioning reference signal offsets, positioning reference signal comb patterns, or a combination thereof per resource pool, per sidelink bandwidth part, or per sidelink carrier, wherein the autonomous resource selection for the transmission of the sidelink positioning reference signal is performed using available positioning reference signal offsets, an available comb pattern, or a combination thereof.
  • the method 400 further comprises receiving mapping information comprising an association between a positioning reference signal resource, a positioning reference signal bandwidth, and a sidelink quality indicator value, wherein the sidelink quality indicator value is associated with a sidelink positioning accuracy, a latency range, or a combination thereof.
  • the method 400 further comprises performing at least one resource reselection based on at least one trigger received from a medium access control, wherein performing the at least one resource reselection comprises requesting a candidate resource for positioning reference signal transmission in a resource pool, a carrier, a bandwidth part, or some combination thereof based on a sidelink positioning request received from the location management function
  • performing the autonomous resource selection for the transmission of the sidelink positioning reference signal comprises performing the autonomous resource selection using sensing, random resource selection, or a combination thereof, and the method further comprises reporting a candidate positioning reference signal offset, a comb pattern, a candidate resource set, or some combination thereof for the transmission of the sidelink positioning reference signal to a higher layer.
  • the method 400 further comprises maximizing a selection of contiguous resources from multiple candidate resource sets received from a plurality of resource pools for the transmission of the sidelink positioning reference signal at the same time within a time period.
  • the method 400 further comprises reserving at least one resource and at least one positioning reference signal offset or a comb pattern for the transmission of the sidelink positioning reference signal within a packet delay budget.
  • the method 400 further comprises indicating a cast type indicator in sidelink control information, wherein the cast type indicator indicates a one-to-one, one-to-many, or many-to-one sidelink positioning reference signal transmission.
  • FIG. 5 is a flow chart diagram illustrating one embodiment of a method 500 for determining reference signal received power.
  • the method 500 is performed by an apparatus, such as the remote unit 102 .
  • the method 500 may be performed by a processor executing program code, for example, a microcontroller, a microprocessor, a CPU, a GPU, an auxiliary processing unit, a FPGA, or the like.
  • the method 500 includes defining 502 , in a sidelink communication device, a trigger.
  • the trigger is triggered by sensing results in a positioning request received from the location management function.
  • the method 500 includes, in response to the trigger being triggered, determining 504 reference signal received power values for destination identifiers indicated in the positioning request.
  • the method 500 includes reporting 506 the reference signal received power values and the destination identifiers via non-access stratum signaling transmitted to the location management function.
  • FIG. 6 is a flow chart diagram illustrating one embodiment of a method 600 for performing a sidelink connection establishment procedure.
  • the method 600 is performed by an apparatus, such as the remote unit 102 .
  • the method 600 may be performed by a processor executing program code, for example, a microcontroller, a microprocessor, a CPU, a GPU, an auxiliary processing unit, a FPGA, or the like.
  • the method 600 includes receiving 602 , at a first sidelink communication device, information from a location management function.
  • the information includes a destination identifier and a plurality of parameters to facilitate sidelink positioning.
  • the method 600 includes performing 604 a sidelink connection establishment procedure including a discovery procedure for unicast sidelink positioning based on the information from the location management function.
  • the method 600 includes transmitting 606 the plurality of parameters using sidelink radio resource control signaling to a second sidelink communication device based on the destination identifier to facilitate sidelink positioning.
  • the method 600 further comprises transmitting an absolute position of the first sidelink communication device using sidelink radio resource control signaling to the second sidelink communication device to facilitate a positioning method at the second sidelink communication device. In some embodiments, the method 600 further comprises requesting an absolute position of the second sidelink communication device using sidelink control information or sidelink radio resource control signaling to facilitate a positioning method at the first sidelink communication device.
  • the method 600 further comprises exchanging absolute positioning information with the second sidelink communication device using sidelink radio resource control signaling and a sidelink positioning reference signal transmission, and reporting sidelink positioning to a lower layer using a sidelink positioning reference signal, wherein exchanging the absolute positioning information comprises using sidelink radio resource control signaling performed with a first periodicity that is less than a second periodicity of a sidelink positioning reference signal transmission and reporting of a sidelink positioning value based on the sidelink positioning reference signal transmission.
  • FIG. 7 is a flow chart diagram illustrating one embodiment of a method 700 for determining parameters.
  • the method 700 is performed by an apparatus, such as the remote unit 102 .
  • the method 700 may be performed by a processor executing program code, for example, a microcontroller, a microprocessor, a CPU, a GPU, an auxiliary processing unit, a FPGA, or the like.
  • the method 700 includes determining 702 , at a first sidelink communication device, a sidelink positioning reference signal transmission offset or a comb pattern in a resource for a groupcast transmission based on a group member identifier.
  • FIG. 8 is a flow chart diagram illustrating one embodiment of a method 800 for indicating mapping information.
  • the method 800 is performed by an apparatus, such as the remote unit 102 .
  • the method 800 may be performed by a processor executing program code, for example, a microcontroller, a microprocessor, a CPU, a GPU, an auxiliary processing unit, a FPGA, or the like.
  • the method 800 includes transmitting 802 , from a first sidelink communication device, an indication to a second sidelink communication device.
  • the indication includes mapping information that associates sidelink positioning reference signal occasions with a sidelink positioning technique, a transmission configuration indicator state, quasi-co-location information for receiver combining, or some combination thereof. Transmission of the indication is semi-statically configured using sidelink radio resource control signaling or dynamically using sidelink control information.
  • FIG. 9 is a flow chart diagram illustrating another embodiment of a method 900 for autonomous sidelink resource selection.
  • the method 900 is performed by an apparatus, such as the network unit 104 .
  • the method 900 may be performed by a processor executing program code, for example, a microcontroller, a microprocessor, a CPU, a GPU, an auxiliary processing unit, a FPGA, or the like.
  • the method 900 includes transmitting 902 , from a location management function, a plurality of parameters for performing autonomous resource selection for transmission of a sidelink positioning reference signal.
  • the plurality of parameters comprise a sidelink positioning quality indicator, a priority value and positioning delay budget to be used for resource selection of the sidelink positioning reference signal, a latency range for sidelink report transmission, reception, or a combination thereof between sidelink user equipments, a resource pool configuration, a reference signal type for sensing, a source identifier, a destination identifier, a cast type, a positioning technique, a report configuration for reporting a positioning value, or some combination thereof.
  • a method comprises: receiving, at a sidelink communication device and from a location management function, a request comprising a plurality of parameters for performing autonomous resource selection for transmission of a sidelink positioning reference signal; performing the autonomous resource selection for determining a sidelink resource for the transmission of the sidelink positioning reference signal; and determining the sidelink resource based on the autonomous resource selection and based on a priority, a packet delay budget, a reference signal received power, a positioning reference signal offset, a positioning reference signal comb pattern, or a combination thereof.
  • the plurality of parameters comprise a sidelink positioning quality indicator, a priority value and positioning delay budget to be used for resource selection of the sidelink positioning reference signal, a latency range for sidelink report transmission, reception, or a combination thereof between sidelink user equipments, a resource pool configuration, a reference signal type for sensing, a source identifier, a destination identifier, a cast type, a positioning technique, a report configuration for reporting a positioning value, or some combination thereof.
  • the method further comprises configurating a set of positioning reference signal offsets, positioning reference signal comb patterns, or a combination thereof per resource pool, per sidelink bandwidth part, or per sidelink carrier, wherein the autonomous resource selection for the transmission of the sidelink positioning reference signal is performed using available positioning reference signal offsets, an available comb pattern, or a combination thereof.
  • the method further comprises receiving mapping information comprising an association between a positioning reference signal resource, a positioning reference signal bandwidth, and a sidelink quality indicator value, wherein the sidelink quality indicator value is associated with a sidelink positioning accuracy, a latency range, or a combination thereof.
  • the method further comprises performing at least one resource reselection based on at least one trigger received from a medium access control, wherein performing the at least one resource reselection comprises requesting a candidate resource for positioning reference signal transmission in a resource pool, a carrier, a bandwidth part, or some combination thereof based on a sidelink positioning request received from the location management function.
  • performing the autonomous resource selection for the transmission of the sidelink positioning reference signal comprises performing the autonomous resource selection using sensing, random resource selection, or a combination thereof, and the method further comprises reporting a candidate positioning reference signal offset, a comb pattern, a candidate resource set, or some combination thereof for the transmission of the sidelink positioning reference signal to a higher layer.
  • the method further comprises maximizing a selection of contiguous resources from multiple candidate resource sets received from a plurality of resource pools for the transmission of the sidelink positioning reference signal at the same time within a time period.
  • the method further comprises reserving at least one resource and at least one positioning reference signal offset or a comb pattern for the transmission of the sidelink positioning reference signal within a packet delay budget.
  • the method further comprises indicating a cast type indicator in sidelink control information, wherein the cast type indicator indicates a one-to-one, one-to-many, or many-to-one sidelink positioning reference signal transmission.
  • an apparatus comprises a sidelink communication device.
  • the apparatus further comprises: a receiver that receives, from a location management function, a request comprising a plurality of parameters for performing autonomous resource selection for transmission of a sidelink positioning reference signal; and a processor that: performs the autonomous resource selection for determining a sidelink resource for the transmission of the sidelink positioning reference signal; and determines the sidelink resource based on the autonomous resource selection and based on a priority, a packet delay budget, a reference signal received power, a positioning reference signal offset, a positioning reference signal comb pattern, or a combination thereof.
  • the plurality of parameters comprise a sidelink positioning quality indicator, a priority value and positioning delay budget to be used for resource selection of the sidelink positioning reference signal, a latency range for sidelink report transmission, reception, or a combination thereof between sidelink user equipments, a resource pool configuration, a reference signal type for sensing, a source identifier, a destination identifier, a cast type, a positioning technique, a report configuration for reporting a positioning value, or some combination thereof.
  • the processor configures a set of positioning reference signal offsets, positioning reference signal comb patterns, or a combination thereof per resource pool, per sidelink bandwidth part, or per sidelink carrier, and the autonomous resource selection for the transmission of the sidelink positioning reference signal is performed using available positioning reference signal offsets, an available comb pattern, or a combination thereof.
  • the receiver receives mapping information comprising an association between a positioning reference signal resource, a positioning reference signal bandwidth, and a sidelink quality indicator value, and the sidelink quality indicator value is associated with a sidelink positioning accuracy, a latency range, or a combination thereof.
  • the processor performs at least one resource reselection based on at least one trigger received from a medium access control, and performing the at least one resource reselection comprises requesting a candidate resource for positioning reference signal transmission in a resource pool, a carrier, a bandwidth part, or some combination thereof based on a sidelink positioning request received from the location management function.
  • the apparatus further comprises a transmitter, wherein the processor performing the autonomous resource selection for the transmission of the sidelink positioning reference signal comprises the processor performing the autonomous resource selection using sensing, random resource selection, or a combination thereof, and the transmitter reports a candidate positioning reference signal offset, a comb pattern, a candidate resource set, or some combination thereof for the transmission of the sidelink positioning reference signal to a higher layer.
  • the processor maximizes a selection of contiguous resources from multiple candidate resource sets received from a plurality of resource pools for the transmission of the sidelink positioning reference signal at the same time within a time period.
  • the processor reserves at least one resource and at least one positioning reference signal offset or a comb pattern for the transmission of the sidelink positioning reference signal within a packet delay budget.
  • the processor indicates a cast type indicator in sidelink control information, and the cast type indicator indicates a one-to-one, one-to-many, or many-to-one sidelink positioning reference signal transmission.
  • a method comprises: defining, in a sidelink communication device, a trigger, wherein the trigger is triggered by sensing results in a positioning request received from the location management function; in response to the trigger being triggered, determining reference signal received power values for destination identifiers indicated in the positioning request; and reporting the reference signal received power values and the destination identifiers via non-access stratum signaling transmitted to the location management function.
  • an apparatus comprises a sidelink communication device.
  • the apparatus further comprises: a processor that: defines a trigger, wherein the trigger is triggered by sensing results in a positioning request received from the location management function; and in response to the trigger being triggered, determines reference signal received power values for destination identifiers indicated in the positioning request; and a transmitter that reports the reference signal received power values and the destination identifiers via non-access stratum signaling transmitted to the location management function.
  • a method comprises: receiving, at a first sidelink communication device, information from a location management function, wherein the information comprises a destination identifier and a plurality of parameters to facilitate sidelink positioning; performing a sidelink connection establishment procedure comprising a discovery procedure for unicast sidelink positioning based on the information from the location management function; and transmitting the plurality of parameters using sidelink radio resource control signaling to a second sidelink communication device based on the destination identifier to facilitate sidelink positioning.
  • the method further comprises transmitting an absolute position of the first sidelink communication device using sidelink radio resource control signaling to the second sidelink communication device to facilitate a positioning method at the second sidelink communication device.
  • the method further comprises requesting an absolute position of the second sidelink communication device using sidelink control information or sidelink radio resource control signaling to facilitate a positioning method at the first sidelink communication device.
  • the method further comprises exchanging absolute positioning information with the second sidelink communication device using sidelink radio resource control signaling and a sidelink positioning reference signal transmission, and reporting sidelink positioning to a lower layer using a sidelink positioning reference signal, wherein exchanging the absolute positioning information comprises using sidelink radio resource control signaling performed with a first periodicity that is less than a second periodicity of a sidelink positioning reference signal transmission and reporting of a sidelink positioning value based on the sidelink positioning reference signal transmission.
  • an apparatus comprises a first sidelink communication device.
  • the apparatus further comprises: a receiver that receives information from a location management function, wherein the information comprises a destination identifier and a plurality of parameters to facilitate sidelink positioning; a processor that performs a sidelink connection establishment procedure comprising a discovery procedure for unicast sidelink positioning based on the information from the location management function; and a transmitter that transmits the plurality of parameters using sidelink radio resource control signaling to a second sidelink communication device based on the destination identifier to facilitate sidelink positioning.
  • the transmitter transmits an absolute position of the first sidelink communication device using sidelink radio resource control signaling to the second sidelink communication device to facilitate a positioning method at the second sidelink communication device.
  • the processor requests an absolute position of the second sidelink communication device using sidelink control information or sidelink radio resource control signaling to facilitate a positioning method at the first sidelink communication device.
  • the processor exchanges absolute positioning information with the second sidelink communication device using sidelink radio resource control signaling and a sidelink positioning reference signal transmission, and the transmitter reports sidelink positioning to a lower layer using a sidelink positioning reference signal, and exchanging the absolute positioning information comprises the processor using sidelink radio resource control signaling performed with a first periodicity that is less than a second periodicity of a sidelink positioning reference signal transmission and reporting of a sidelink positioning value based on the sidelink positioning reference signal transmission.
  • a method comprises: determining, at a first sidelink communication device, a sidelink positioning reference signal transmission offset or a comb pattern in a resource for a groupcast transmission based on a group member identifier.
  • an apparatus comprises a first sidelink communication device.
  • the apparatus further comprises: a processor that determines a sidelink positioning reference signal transmission offset or a comb pattern in a resource for a groupcast transmission based on a group member identifier.
  • a method comprises: transmitting, from a first sidelink communication device, an indication to a second sidelink communication device, wherein the indication comprises mapping information that associates sidelink positioning reference signal occasions with a sidelink positioning technique, a transmission configuration indicator state, quasi-co-location information for receiver combining, or some combination thereof, wherein transmission of the indication is semi-statically configured using sidelink radio resource control signaling or dynamically using sidelink control information.
  • an apparatus comprises a first sidelink communication device.
  • the apparatus further comprises: a transmitter that transmits an indication to a second sidelink communication device, wherein the indication comprises mapping information that associates sidelink positioning reference signal occasions with a sidelink positioning technique, a transmission configuration indicator state, quasi-co-location information for receiver combining, or some combination thereof, wherein transmission of the indication is semi-statically configured using sidelink radio resource control signaling or dynamically using sidelink control information.
  • a method comprises: transmitting, from a location management function, a plurality of parameters for performing autonomous resource selection for transmission of a sidelink positioning reference signal.
  • the plurality of parameters comprise a sidelink positioning quality indicator, a priority value and positioning delay budget to be used for resource selection of the sidelink positioning reference signal, a latency range for sidelink report transmission, reception, or a combination thereof between sidelink user equipments, a resource pool configuration, a reference signal type for sensing, a source identifier, a destination identifier, a cast type, a positioning technique, a report configuration for reporting a positioning value, or some combination thereof.
  • an apparatus comprises a location management function.
  • the apparatus further comprises: a transmitter that transmits a plurality of parameters for performing autonomous resource selection for transmission of a sidelink positioning reference signal.
  • the plurality of parameters comprise a sidelink positioning quality indicator, a priority value and positioning delay budget to be used for resource selection of the sidelink positioning reference signal, a latency range for sidelink report transmission, reception, or a combination thereof between sidelink user equipments, a resource pool configuration, a reference signal type for sensing, a source identifier, a destination identifier, a cast type, a positioning technique, a report configuration for reporting a positioning value, or some combination thereof.

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