WO2023231028A1 - Procédés, dispositifs et support lisible par ordinateur pour des communications - Google Patents

Procédés, dispositifs et support lisible par ordinateur pour des communications Download PDF

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Publication number
WO2023231028A1
WO2023231028A1 PCT/CN2022/096984 CN2022096984W WO2023231028A1 WO 2023231028 A1 WO2023231028 A1 WO 2023231028A1 CN 2022096984 W CN2022096984 W CN 2022096984W WO 2023231028 A1 WO2023231028 A1 WO 2023231028A1
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WIPO (PCT)
Prior art keywords
related information
transmitting
terminal device
measurement report
positioning
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PCT/CN2022/096984
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English (en)
Inventor
Ying Zhao
Wei Chen
Jin Yang
Fang Xu
Gang Wang
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Nec Corporation
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Publication date
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Priority to PCT/CN2022/096984 priority Critical patent/WO2023231028A1/fr
Publication of WO2023231028A1 publication Critical patent/WO2023231028A1/fr

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    • 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
    • H04L5/0091—Signaling for the administration of the divided path
    • H04L5/0094—Indication of how sub-channels of the path are allocated
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W64/00—Locating users or terminals or network equipment for network management purposes, e.g. mobility management
    • H—ELECTRICITY
    • H04—ELECTRIC COMMUNICATION TECHNIQUE
    • H04W—WIRELESS COMMUNICATION NETWORKS
    • H04W92/00—Interfaces specially adapted for wireless communication networks
    • H04W92/16—Interfaces between hierarchically similar devices
    • H04W92/18—Interfaces between hierarchically similar devices between terminal devices

Definitions

  • Embodiments of the present disclosure generally relate to the field of communication, and in particular, to methods, devices and computer readable medium for communication.
  • the new communication systems can support various types of service applications for terminal devices.
  • the positioning of a terminal device or a mobile device may be useful or essential to a number of applications including emergency calls, navigation, direction finding, asset tracking, Internet service, and V2X applications.
  • sidelink communication since sidelink communication has been proposed, it is worth studying the positioning of the terminal device in the scenario of sidelink communications.
  • example embodiments of the present disclosure relate to methods, devices and computer readable medium for communication.
  • the terminal device transmits, to a reference device, positioning related information. Further, the terminal device receives, from the reference device, a set of reference signals for sidelink positioning of the terminal device. Moreover, the terminal device transmits, to the reference device, a measurement report for at least a part of the set of reference signals.
  • the reference device receives, from a terminal device, positioning related information. Further, the reference device transmits, to the terminal device, a set of reference signals for sidelink positioning of the terminal device. Moreover, the reference device receives, from the terminal device, a measurement report for at least a part of the set of reference signals.
  • a terminal device comprising a processor and a memory coupled to the processor and storing instructions thereon, the instructions, when executed by the processor, causing the terminal device to perform the method of the first aspect.
  • a reference device comprising a processor and a memory coupled to the processor and storing instructions thereon, the instructions, when executed by the processor, causing the reference device to perform the method of the second aspect.
  • a computer readable medium having instructions stored thereon, the instructions, when executed on at least one processor, causing the at least one processor to perform the method of the first aspect or the second aspect.
  • FIG. 1 illustrates an example environment in which embodiments of the present disclosure can be implemented
  • FIG. 2 illustrates a signaling flow between the terminal device and the reference device according to some example embodiments of the present disclosure
  • FIGS. 3A-3D illustrate schematic diagrams of sidelink positioning in a unicast scenario according to some embodiments of the present disclosure, respectively;
  • FIGS. 4A-4B illustrate schematic diagrams of sidelink positioning in a groupcast scenario according to some embodiments of the present disclosure, respectively;
  • FIGS. 5A-5E illustrate schematic diagrams of beam mapping between the reference signal transmission and measurement reporting with no repetition according to some embodiments of the present disclosure, respectively;
  • FIGS. 5F-5G illustrate schematic diagrams of beam mapping between the reference signal transmission and measurement reporting with repetition according to some embodiments of the present disclosure, respectively.
  • FIG. 6 illustrates a flowchart of an example method of communication implemented at the terminal device in accordance with some embodiments of the present disclosure
  • FIG. 7 illustrates a flowchart of an example method of communication implemented at the reference device in accordance with some embodiments of the present disclosure.
  • FIG. 8 illustrates a simplified block diagram of a device that is suitable for implementing example embodiments of the present disclosure.
  • terminal device refers to any device having wireless or wired communication capabilities.
  • the terminal device include, but not limited to, user equipment (UE) , personal computers, desktops, mobile phones, cellular phones, smart phones, personal digital assistants (PDAs) , portable computers, tablets, wearable devices, internet of things (IoT) devices, Ultra-reliable and Low Latency Communications (URLLC) devices, Internet of Everything (IoE) devices, machine type communication (MTC) devices, device on vehicle for V2X communication where X means pedestrian, vehicle, or infrastructure/network, devices for Integrated Access and Backhaul (IAB) , Small Data Transmission (SDT) , mobility, Multicast and Broadcast Services (MBS) , positioning, dynamic/flexible duplex in commercial networks, reduced capability (RedCap) , Space borne vehicles or Air borne vehicles in Non-terrestrial networks (NTN) including Satellites and High Altitude Platforms (HAPs) encompassing Unmanned Aircraft Systems (UAS) , eX
  • UE user equipment
  • the ‘terminal device’ can further has ‘multicast/broadcast’ feature, to support public safety and mission critical, V2X applications, transparent IPv4/IPv6 multicast delivery, IPTV, smart TV, radio services, software delivery over wireless, group communications and IoT applications. It may also incorporated one or multiple Subscriber Identity Module (SIM) as known as Multi-SIM.
  • SIM Subscriber Identity Module
  • the term “terminal device” can be used interchangeably with a UE, a mobile station, a subscriber station, a mobile terminal, a user terminal or a wireless device.
  • the term “network device” refers to a device which is capable of providing or hosting a cell or coverage where terminal devices can communicate.
  • a network device include, but not limited to, a Node B (NodeB or NB) , an evolved NodeB (eNodeB or eNB) , a next generation NodeB (gNB) , a transmission reception point (TRP) , a remote radio unit (RRU) , a radio head (RH) , a remote radio head (RRH) , an IAB node, a low power node such as a femto node, a pico node, a reconfigurable intelligent surface (RIS) , Network-controlled Repeaters, and the like.
  • NodeB Node B
  • eNodeB or eNB evolved NodeB
  • gNB next generation NodeB
  • TRP transmission reception point
  • RRU remote radio unit
  • RH radio head
  • RRH remote radio head
  • IAB node a
  • the terminal device or the network device may have artificial intelligence (AI) or machine learning (ML) capability. It generally includes one or more models which have been trained from numerous collected data for a specific function, and can be used to predict some information.
  • AI artificial intelligence
  • ML machine learning
  • the terminal device or the network device may have Artificial intelligence (AI) or Machine learning capability. It generally includes a model which has been trained from numerous collected data for a specific function, and can be used to predict some information.
  • the terminal or the network device may work on several frequency ranges, e.g. FR1 (410 MHz –7125 MHz) , FR2 (24.25 GHz to 71 GHz) , 71 GHz to 114 GHz, and frequency band larger than 100 GHz as well as Tera Hertz (THz) . It can further work on licensed/unlicensed/shared spectrum.
  • the terminal device may have more than one connections with the network devices under Multi-Radio Dual Connectivity (MR-DC) application scenario.
  • MR-DC Multi-Radio Dual Connectivity
  • the terminal device or the network device can work on full duplex, flexible duplex and cross division duplex modes.
  • the network device may have the function of network energy saving, Self-Organising Networks (SON) /Minimization of Drive Tests (MDT) .
  • the terminal may have the function of power saving .
  • test equipment e.g. signal generator, signal analyzer, spectrum analyzer, network analyzer, test terminal device, test network device, channel emulator.
  • the embodiments of the present disclosure may be performed according to any generation communication protocols either currently known or to be developed in the future.
  • Examples of the communication protocols include, but not limited to, the first generation (1G) , the second generation (2G) , 2.5G, 2.75G, the third generation (3G) , the fourth generation (4G) , 4.5G, the fifth generation (5G) communication protocols, 5.5G, 5G-Advanced networks, or the sixth generation (6G) networks.
  • the terminal device may be connected with a first network device and a second network device.
  • One of the first network device and the second network device may be a master node and the other one may be a secondary node.
  • the first network device and the second network device may use different radio access technologies (RATs) .
  • the first network device may be a first RAT device and the second network device may be a second RAT device.
  • the first RAT device is eNB and the second RAT device is gNB.
  • Information related with different RATs may be transmitted to the terminal device from at least one of the first network device and the second network device.
  • first information may be transmitted to the terminal device from the first network device and second information may be transmitted to the terminal device from the second network device directly or via the first network device.
  • information related with configuration for the terminal device configured by the second network device may be transmitted from the second network device via the first network device.
  • Information related with reconfiguration for the terminal device configured by the second network device may be transmitted to the terminal device from the second network device directly or via the first network device.
  • the singular forms ‘a’ , ‘an’ and ‘the’ are intended to include the plural forms as well, unless the context clearly indicates otherwise.
  • the term ‘includes’ and its variants are to be read as open terms that mean ‘includes, but is not limited to. ’
  • the term ‘based on’ is to be read as ‘at least in part based on. ’
  • the term ‘one embodiment’ and ‘an embodiment’ are to be read as ‘at least one embodiment. ’
  • the term ‘another embodiment’ is to be read as ‘at least one other embodiment. ’
  • the terms ‘first, ’ ‘second, ’ and the like may refer to different or same objects. Other definitions, explicit and implicit, may be included below.
  • values, procedures, or apparatus are referred to as ‘best, ’ ‘lowest, ’ ‘highest, ’ ‘minimum, ’ ‘maximum, ’ or the like. It will be appreciated that such descriptions are intended to indicate that a selection among many used functional alternatives can be made, and such selections need not be better, smaller, higher, or otherwise preferable to other selections.
  • circuitry used herein may refer to hardware circuits and/or combinations of hardware circuits and software.
  • the circuitry may be a combination of analog and/or digital hardware circuits with software/firmware.
  • the circuitry may be any portions of hardware processors with software including digital signal processor (s) , software, and memory (ies) that work together to cause an apparatus, such as a terminal device or a network device, to perform various functions.
  • the circuitry may be hardware circuits and or processors, such as a microprocessor or a portion of a microprocessor, that requires software/firmware for operation, but the software may not be present when it is not needed for operation.
  • the term circuitry also covers an implementation of merely a hardware circuit or processor (s) or a portion of a hardware circuit or processor (s) and its (or their) accompanying software and/or firmware.
  • RAT-dependent NR positioning technologies are related to downlink (DL) positioning or uplink (UL) positioning or both.
  • timing based techniques with timing of arrival path (s) and phase difference based techniques angle-based techniques with DL angle (s) of departure and DL angle (s) of arrival
  • carrier-phase based techniques techniques based on Cell ID and transmission reception point (TRP) related information.
  • TRP Transmission reception point
  • timing based techniques with timing of arrival path (s) have been used: timing based techniques with timing of arrival path (s) , angle-based techniques with UL angle (s) of departure and UL angle (s) of arrival, carrier-phase based techniques, received reference signal power based techniques.
  • timing based techniques with round trip time measurement including support for multiple TRPs.
  • combination of DL and UL techniques for NR positioning may be used.
  • Embodiments of the present disclosure provide a scheme of sidelink positioning.
  • a terminal device such as a UE transmits, to a reference device, including but not limited to, a roadside unit (RSU) or a voluntary road user (VRU) device or terminal, positioning related information.
  • the terminal device receives, from the reference device, a set of reference signals for sidelink positioning of the terminal device.
  • the terminal device transmits, to the reference device, a measurement report for at least a part of the set of reference signals.
  • FIG. 1 illustrates an example environment 100 in which example embodiments of the present disclosure can be implemented.
  • the environment 100 which may be a part of a communication network, comprises a terminal device 110 and a reference device 120.
  • the reference device 120 may be a RSU or a VRU device or terminal or other system/communication node.
  • the terminal device 110 may communicate with the reference device 120.
  • the environment 100 may further comprises one or more other reference devices (not shown) to communicate with the terminal device 100 for sidelink positioning.
  • the communication system 100 may further comprise a network device (not shown) .
  • the network device and the terminal device 110 can communicate data and control information to each other.
  • the environment 200 may include any other suitable devices, elements or functions for providing communication.
  • Communications in the environment 100 may be implemented according to any proper communication protocol (s) , comprising, but not limited to, cellular communication protocols of the first generation (1G) , the second generation (2G) , the third generation (3G) , the fourth generation (4G) and the fifth generation (5G) and on the like, wireless local network communication protocols such as Institute for Electrical and Electronics Engineers (IEEE) 802.11 and the like, and/or any other protocols currently known or to be developed in the future.
  • s cellular communication protocols of the first generation (1G) , the second generation (2G) , the third generation (3G) , the fourth generation (4G) and the fifth generation (5G) and on the like, wireless local network communication protocols such as Institute for Electrical and Electronics Engineers (IEEE) 802.11 and the like, and/or any other protocols currently known or to be developed in the future.
  • IEEE Institute for Electrical and Electronics Engineers
  • the communication may utilize any proper wireless communication technology, comprising but not limited to: Code Divided Multiple Address (CDMA) , Frequency Divided Multiple Address (FDMA) , Time Divided Multiple Address (TDMA) , Frequency Divided Duplexer (FDD) , Time Divided Duplexer (TDD) , Multiple-Input Multiple-Output (MIMO) , Orthogonal Frequency Divided Multiple Access (OFDMA) and/or any other technologies currently known or to be developed in the future.
  • CDMA Code Divided Multiple Address
  • FDMA Frequency Divided Multiple Address
  • TDMA Time Divided Multiple Address
  • FDD Frequency Divided Duplexer
  • TDD Time Divided Duplexer
  • MIMO Multiple-Input Multiple-Output
  • OFDMA Orthogonal Frequency Divided Multiple Access
  • Embodiments of the present disclosure can be applied to any suitable scenarios.
  • embodiments of the present disclosure can be implemented at reduced capability NR devices.
  • embodiments of the present disclosure can be implemented in one of the followings: NR multiple-input and multiple-output (MIMO) , NR sidelink enhancements, NR systems with frequency above 52.6GHz, an extending NR operation up to 71GHz, narrow band-Internet of Thing (NB-IOT) /enhanced Machine Type Communication (eMTC) over non-terrestrial networks (NTN) , NTN, UE power saving enhancements, NR coverage enhancement, NB-IoT and LTE-MTC, Integrated Access and Backhaul (IAB) , NR Multicast and Broadcast Services, or enhancements on Multi-Radio Dual-Connectivity.
  • MIMO multiple-input and multiple-output
  • NR sidelink enhancements NR systems with frequency above 52.6GHz, an extending NR operation up to 71GHz
  • NB-IOT narrow band-Internet of
  • resources for sidelink communications between the terminal device 110 and the reference device 120 can be scheduled by a network device, which is referred to as mode 1 resource allocation. For example, if the terminal device 110 and the reference device 120 are in the coverage of the network device, the network device can schedule the resources for the sidelink communications.
  • resources for sidelink communication between the terminal device 110 and the reference device 120 can also be determined by terminal device and the reference device autonomously without the participation of network, which is referred to as mode 2 resource allocation. For example, if the terminal device 110 and the reference device 120 are out of the coverage of the network device 120. In this case, the terminal device 110 can schedule the resources for the sidelink communications.
  • FIG. 2 shows a signaling flow between the terminal device and the reference device according to some example embodiments of the present disclosure. Only for the purpose of discussion, the flowchart 200 will be described with reference to FIG. 1.
  • the process 200 may involve the terminal device 110 and the reference device 120 in FIG. 1.
  • the process 200 may involve the terminal device 110 and a plurality of reference devices including the reference device 120.
  • the reference device 120 may comprises a RSU or a VRU device or terminal.
  • the terminal device 110 transmits (205) to the reference device 120 positioning related information. Then, the reference device 120 transmits (210) , to the terminal device 110, a set of reference signals for sidelink positioning of the terminal device 110. The Further, the terminal device 110 may determine at least a part of the set of reference signals for which the measurement report is generated, and then transmits (215) to the reference device 120 a measurement report for the at least a part of the set of reference signals. Likewise, at least one other reference device may participate in sidelink positioning of the terminal device 110. Then, with the assistance of the reference device 120 and the at least one other reference device, the position of the terminal device 110 may be determined.
  • the reference device 120 may transmit to the terminal device 110 a positioning request, and then, in response, the terminal device 110 may transmit to the reference device 120 positioning related information. In some other embodiment, the terminal device 110 may decide to request the terminal device 110 to assist its sidelink positioning, and then, the terminal device 110 may transmit to the reference device 120 positioning related information.
  • the terminal device 110 may utilize groupcast. In this case, the terminal device 110 may transmit the positioning related information to a plurality of reference devices including the reference device 110, each of the plurality of reference devices assisting in sidelink positioning of the terminal device 110. In this way, signaling overhead, positioning latency and power consumption may be reduced.
  • the above information may comprise at least one of: sidelink positioning reference signal (S-PRS) transmission activation/deactivation indication, S-PRS transmission timing indication, S-PRS measurement reporting timing indication, S-PRS measurement thresholds, S-PRS transmitting beam indication, S-PRS measurement reporting beam indication, S-PRS resource reservation/indication.
  • S-PRS sidelink positioning reference signal
  • the above information may be comprised in a first stage of sidelink control information (SCI) .
  • SCI sidelink control information
  • a new 1st-stage SCI format including but not limited to, SCI format 1-B, may be used to carry the positioning related information.
  • a first part of the positioning related information such as basic positioning request information
  • a second part of the positioning related information may be comprised in a second stage of the SCI.
  • the first stage of the SCI may comprise an indication that the second part of the positioning related information is comprised in the second stage of the SCI.
  • a new 1st-stage SCI format including but not limited to, SCI format 1-B
  • a new SCI 2nd-stage SCI format including but not limited to, SCI format 2-D, may be used to carry the second part of the positioning related information.
  • the positioning related information may be comprised in the second stage of SCI.
  • a new SCI 2nd-stage SCI format including but not limited to, SCI format 2-D, may be used.
  • the first stage of the SCI may comprise an indication that the positioning related information is comprised in the second stage of SCI.
  • the indication may be included in the 2nd-stage SCI format field in the existing SCI format 1-A.
  • the indication may be included in reserved bits in the existing SCI format 1-A, which is a number of bits as determined by higher layer parameter sl-NumReservedBits.
  • a first part of the positioning related information may be comprised in the second stage of SCI, and a second part of the positioning related information may be transmitted on a physical sidelink shared channel (PSSCH) .
  • PSSCH physical sidelink shared channel
  • SL-MAC-CE sidelink media access control element
  • some contents of the positioning related information may be carried in the PSSCH scheduled by the SCI in associated physical sidelink control channel (PSCCH) .
  • the legacy SCI format 2-A may be reused to carry the first part of the positioning related information with a unicast type indication inside the SCI format 1-A, and, in the form of SL-MAC-CE, PSSCH transmission associated with the PSCCH may carry the remaining information, that is, the second part of the positioning related information.
  • the positioning related information may be transmitted on the PSSCH.
  • an indication that the positioning related information is transmitted on the PSSCH may be comprised in at least one of: a first stage of sidelink control information (SCI) or a second stage of the SCI.
  • SCI format 1-B or a certain field in SCI format 1-A may be used to carry the indication.
  • the devices for example. the other UEs, RSU, VRU around the terminal device 110
  • the devices which detected the SCI format 1-A/1-B from the terminal device 110 may determine whether to decode the 2nd SCI information based on their capability or other considerations.
  • the above information may comprise at least one of: expected positioning method, positioning capability (e.g. UE-assisted or UE based) , S-PRS transmission activation/deactivation indication, S-PRS transmission timing indication, S-PRS measurement reporting timing indication, S-PRS measurement thresholds, S-PRS transmitting beam indication, S-PRS measurement reporting beam indication, S-PRS resource reservation/indication and etc. for each reference device in the plurality of reference devices.
  • positioning capability e.g. UE-assisted or UE based
  • S-PRS transmission activation/deactivation indication e.g. UE-assisted or UE based
  • S-PRS transmission activation/deactivation indication e.g. UE-assisted or UE based
  • S-PRS transmission timing indication e.g. UE-assisted or UE based
  • S-PRS measurement reporting timing indication e.g. UE-PRS measurement reporting timing indication
  • S-PRS measurement thresholds
  • a first part of the positioning related information such as basic positioning request information
  • a second part of the positioning related information may be comprised in a second stage of the SCI.
  • the first stage of the SCI may comprise an indication that the second part of the positioning related information is comprised in the second stage of the SCI.
  • a new 1st-stage SCI format including but not limited to, SCI format 1-C
  • a new SCI 2nd-stage SCI format including but not limited to, SCI format 2-D, may be used to carry the second part of the positioning related information.
  • the positioning related information may be comprised in the second stage of SCI.
  • a new 2nd-stage SCI format including but not limited to, SCI format 2-D, may be used.
  • the first stage of the SCI may comprise an indication that the positioning related information is comprised in the second stage of SCI.
  • the indication may be included in the 2nd-stage SCI format field in the existing SCI format 1-A.
  • the indication may be included in reserved bits in the existing SCI format 1-A, which is a number of bits as determined by higher layer parameter sl-NumReservedBits.
  • a first part of the positioning related information may be comprised in the second stage of SCI, and a second part of the positioning related information may be transmitted on the PSSCH.
  • the legacy SCI format 2-A may be reused to carry the first part of the positioning related information with a groupcast type indication inside the SCI format 1-A, and, in the form of SL-MAC-CE, PSSCH transmission associated with the PSCCH may carry the remaining information, that is, the second part of the positioning related information.
  • a first part of the positioning related information may be zone information, for example, as included in SCI format 2-B, and a second part of the positioning related information other than the zone information may be transmitted on the PSSCH.
  • the zone information may indicate a zone in which the terminal device 110, including but not limited to, coarse positioning by RAT independent methods, for example, by global navigation satellite systems (GNSS) .
  • GNSS global navigation satellite systems
  • the zone information may be used by the terminal device 110 to request a candidate reference device receiving the positioning related information to assist in sidelink positioning of the terminal device.
  • a first stage of the SCI may comprise an indication that the zone information is used for sidelink positioning of the terminal device.
  • the indication may be comprised in the “2nd-stage SCI format field of SCI 1-A, an then the terminal device 110 may set the “communication range requirement” field in SCI format 2-B as the estimate of the range where potential reference device for assisting positioning of the terminal device 110 are located, and in the form of SL-MAC-CE, PSSCH transmission associated with the PSCCH may carry the remaining information, that is, the second part of the positioning related information other than the zone information.
  • the devices irrelevant to positioning of the terminal device 110 may determine, for example, based on their capability or other considerations, that there is no need to decode the second stage SCI after receiving or decoding the first stage SCI and PSSCH.
  • the measurement report may comprise at least measurement result on reference signal received power (RSRP) and an identifier (ID) of the reference signal.
  • the measurement report may comprise other information, including but not limited to, received signal strength indication (RSSI) of the reference signal, reference signal receive quality (RSRQ) of the reference signal, signal-to-noise ratio (SNR) of the reference signal and a timestamp.
  • RSSI received signal strength indication
  • RSSRQ reference signal receive quality
  • SNR signal-to-noise ratio
  • the positioning related information may comprise a set of identifiers for each of the plurality of reference devices.
  • the set of identifiers may indicate a set of reference signal sequences for generating a set of reference signals transmitted by a corresponding reference device.
  • the terminal device 110 may assign temporary different S-PRS sequence set ID (or the lowest/all S-PRS sequence ID in the S-PRS sequence set) to each corresponding reference device for the pseudo-random sequence generator initialization of S-PRS in the positioning procedure.
  • the order of S-PRS sequence ID may represent the order of S-PRS transmissions and related procedure for different reference devices.
  • the positioning related information may comprise a shift value for each of the plurality of reference devices.
  • the shift value may be applied by a corresponding reference device in combination with an identifier of a reference signal sequence to determine a set of reference signal sequences for generating a set of reference signals to be transmitted by the reference device.
  • the terminal device 110 assign different shift value to each reference device for the pseudo-random sequence generator initialization of S-PRS, for example, where is an identifier of a target reference signal sequence, and is an identifier of a reference signal sequence for the legacy positioning in existing 3GPP specifications, and Ns is the shift value corresponding to the reference device.
  • the order of shift value may represent the order of S-PRS transmissions and related procedure for different reference devices.
  • the positioning related information may comprise an indication for a transmission time period for the reference device 120 to transmit the set of reference signals.
  • the positioning related information may further comprise an indication for a reporting time period for the terminal device 110 to transmit the measurement report. Examples are described with reference to FIGS. 3A-3D. It should be noted the number of reference signals and the number of transmission of the measurement report shown in FIGS. 3A-3D are only examples.
  • the terminal device 110 transmits a positioning request to the reference device 120.
  • the reference device 120 transmits a set of reference signals to the terminal device 110 according to the reference signal configuration and corresponding transmission resource allocation.
  • the terminal device 110 transmits to the reference device 120 the measurement report according to the report configuration and corresponding reporting resource allocation.
  • the terminal device 110 transmits a positioning request to the reference device 120.
  • the reference device 120 transmits a set of reference signals to the terminal device 110.
  • the terminal device 110 transmits to the reference device 120 an indication of terminating or restarting a positioning procedure with the reference device 110 at an end point of the RS transmission window, that is, t 2 .
  • a predefined threshold may be considered as invalid measurement. If all measurements are lower than the threshold, the terminal device 110 may abort or restart the current measurement procedure with request on power boost of S-PRS transmission.
  • the terminal device 110 transmits a positioning request to the reference device 120.
  • the reference device 120 transmits a set of reference signals to the terminal device 110.
  • the terminal device 110 in accordance with a determination that the reception of the set of reference signals is completed in advance relative to an end point of the S-PRS transmission window that is, t2, it transmits, at t2-d1, to the reference device 120, a trigger for receiving the measurement report from the terminal device 110, and then, on this basis, the timing relation related to the subsequent steps of the measurement reporting may shift accordingly.
  • the terminal device 110 may start reporting based on the predefined measurement reporting window from t 3 to t 4 .
  • the reference device 120 may transmit, within the transmission time period, to the terminal device 110 an indication that the transmission of the set of reference signals is to be completed, and then, on this basis, the terminal device 110 may determine that the reception of the set of reference signals is completed in advance.
  • the indication may be transmitted explicitly together with the last reference signal.
  • the terminal device 110 may know that the number of the set of reference signals, and them the terminal device 110 may determine that the reception of the set of reference signals is completed after receiving the last reference signal. Then, the terminal device 110 transmits the measurement report in advance relative to an original start point of the reporting window, that is, t 3 .
  • the terminal device may transmit an indication that the transmission of the measurement report is completed together with the last reporting. In this case, the measurement report may be transmitted with an advance of d1, and thus, positioning latency can be reduced.
  • the set of reference signals are transmitted by the reference device 120 repeatedly, and then the terminal device 110 may measure the same set of reference signals with different receiving beams.
  • the terminal device 110 transmits a positioning request to the reference device 120.
  • the reference device 120 transmits a set of reference signals to the terminal device 110.
  • the reference device 120 may transmit to the terminal device 110 a explicit or implicit repetition indication that the first repetition (initial transmission) of the set of reference signals is completed.
  • a second S-PRS transmission window is started, during which, the reference device 120 transmits the set of reference signals to the terminal device 110.
  • the terminal device 110 in accordance with a determination that the reception of the set of reference signals is completed, for example, based on an indication that the transmission of the set of reference signals is to be completed from the reference device 120, it transmits to the reference device 120, a trigger for receiving the measurement report from the terminal device 110. Then, the terminal device 110 transmits the measurement report to the reference device 120 in advance.
  • the terminal device may transmit an indication that the transmission of the measurement report is completed together with the last reporting.
  • the positioning related information may comprise an indication for a first transmission time period for a first reference device 405 to transmit the set of reference signals, and an indication for a first reporting time period for the terminal device 110 to transmit the measurement report associated with the first reference device 405.
  • the positioning related information may further comprise an indication for a second transmission time period for the second reference device 410 to transmit a set of reference signals, and an indication for a second reporting time period for the terminal device 110 to transmit a measurement report associated with the second reference device 410. Examples are described with reference to FIGS. 4A-4B. It should be noted the number of reference signals and the number of transmission of the measurement report shown in FIGS. 4A-4B are only examples.
  • the terminal device 110 transmits a positioning request to the reference device 405 and 410.
  • the first reference device 405 transmits a set of reference signals to the terminal device 110.
  • the terminal device 110 transmits to the first reference device 405 the measurement report associated with the first reference device 405.
  • the second reference device 410 transmits a set of reference signals to the terminal device 110.
  • the terminal device 110 transmits to the second reference device 410 the measurement report associated with the second reference device 410.
  • the terminal device 110 transmits a positioning request to the reference devices 405 and 410.
  • the first reference device 405 transmits a set of reference signals to the terminal device 110.
  • the terminal device 110 in accordance with a determination that the reception of the set of reference signals from the first reference device 405 is completed, for example, based on an explicit or implicit indication that the transmission of the set of reference signals is to be completed from the first reference device 405, it transmits to the reference devices 405 and 410, a trigger for receiving the measurement report for the first reference device 405 from the terminal device 110, and then, on this basis, the timing relation related to the subsequent steps of the measurement reporting may shift accordingly.
  • the terminal device 110 transmits the measurement report for the first reference device 405 to the second reference device 405 in advance relative to an original start point of the first reporting window.
  • the terminal device may transmit an explicit or implicit indication that the transmission of the measurement report for the first reference device 405 is completed together with the last reporting for the first reference device 405, to trigger the S-PRS transmission from the second reference device 410.
  • the first reference device 405 transmits a set of reference signals to the terminal device 110 in advance.
  • the terminal device 110 in accordance with a determination that the reception of the set of reference signals from the second reference device 410 is completed, for example, based on an indication that the transmission of the set of reference signals is to be completed from the second reference device 410, it transmits to the reference devices 405 and 410, a trigger for receiving the measurement report for the second reference device 410 from the terminal device 110. Otherwise, the terminal device 110 may start reporting based on the predefined reporting window. Then, the terminal device 110 transmits the measurement report for the second reference device 410 to the second reference device 410 in advance. The terminal device may transmit an indication that the transmission of the measurement report for the second reference device 410 is completed together with the last reporting for the second reference device 410.
  • the positioning related information may comprise an association between a corresponding reference signal and a time domain resource or occasion for transmitting the measurement report. Examples are described with reference to FIGS. 5A-5G. It should be noted the number of reference signals and the number of transmissions of the measurement report shown in FIGS. 5A-5G are only examples.
  • the S-PRS 500-1 to 500-4 are associated with the slots 521-1 to 521-4 for transmitting the measurement report respectively, and as shown in FIGS. 5D-5E, the S-PRS 500-1 to 500-4 are associated with the symbols 541-1 to 541-4 in the slot 541 for transmitting the measurement report respectively.
  • the terminal device 110 receives, from the reference device 120, a set of reference signals, that is, the S-PRS 500-1 to 500-4 at slots 511-0 to 511-3 respectively with the same receiving beam 520-1. Then, the terminal device 110 may determine at least a part of the set of reference signals for which the corresponding measurement report is to be generated.
  • the at least a part of the set of reference signals may comprise the S-PRS 500-1 and the S-PRS 500-3.
  • the measurement report is to be reported twice.
  • the terminal device 110 may determine, for the at least a part of the set of reference signals, that is, the S-PRS 500-1 and the S-PRS 500-3, respective time domain resources for transmitting the measurement report, that is, the slots 521-1 and 521-3. Then, the terminal device 110 transmits, to the reference device 120, the measurement report on each of the time domain resources using the same beam as the receiving beam 520-1 for receiving the reference signals. Accordingly, the reference device 120 receives, from the terminal device 110, the measurement report on each of the time domain resources using a receiving beam corresponding to the transmitting beam 520-2 or 520-4 for transmitting a corresponding reference signal.
  • the measurement report is to be reported four times.
  • the terminal device 110 may determine, for the set of reference signals, that is, the S-PRS 500-1 to 500-4, respective time domain resources for transmitting the measurement report, that is, the slots 521-1 to 521-4. Then, the terminal device 110 transmits, to the reference device 120, the measurement report on each of the time domain resources using the same beam as the receiving beam 520-1 for receiving the reference signals. Accordingly, the reference device 120 receives, from the terminal device 110, the measurement report on each of the time domain resources using a receiving beam corresponding to the transmitting beam 520-2, 520-3, 520-4 or 520-5 for transmitting a corresponding reference signal.
  • the measurement report is to be reported twice.
  • the time domain resource for transmitting the measurement report may comprise a plurality of transmission occasions.
  • the terminal device 110 transmits the measurement report at a second transmission occasion of the plurality of transmission occasions, that is, the slot 531-3, using the same beam as the receiving beam 520-1 for receiving the reference signals.
  • the reference device 120 receives, from the terminal device 110, the measurement report at the second transmission occasion using a receiving beam corresponding to the transmitting beam 520-4 for transmitting the S-PRS 500-3.
  • the measurement report is to be reported twice.
  • the terminal device 110 may determine, for the at least a part of the set of reference signals, that is, the S-PRS 500-1 and the S-PRS 500-3, respective time domain resources for transmitting the measurement report, that is, the symbols 541-1 and 541-3. Then, the terminal device 110 transmits, to the reference device 120, the measurement report on each of the time domain resources using the same beam as the receiving beam 520-1 for receiving the reference signals. Accordingly, the reference device 120 receives, from the terminal device 110, the measurement report on each of the time domain resources using a receiving beam corresponding to the transmitting beam 520-2 or 520-4 for transmitting a corresponding reference signal.
  • the measurement report is to be reported four times.
  • the terminal device 110 may determine, for the set of reference signals, that is, the S-PRS 500-1 to 500-4, respective time domain resources for transmitting the measurement report, that is, the symbols 521-1 to 521-4. Then, the terminal device 110 transmits, to the reference device 120, the measurement report on each of the time domain resources using the same beam as the receiving beam 520-1 for receiving the reference signals. Accordingly, the reference device 120 receives, from the terminal device 110, the measurement report on each of the time domain resources using a receiving beam corresponding to the transmitting beam 520-2, 520-3, 520-4 or 520-5 for transmitting a corresponding reference signal.
  • the set of reference signals may be transmitted by the reference device 120 repeatedly.
  • the terminal device 110 may receive a first repetition of the set of reference signals using a first receiving beam 550-1, and receiving a second repetition of the set of reference signals using a second receiving beam 550-2 different from the first receiving beam 550-1. Then, the terminal device 110 may transmit a first version of the measurement report for the first repetition using a first transmitting beam corresponding to the first receiving beam 550-1, and transmit a second version of the measurement report for the second repetition using a second transmitting beam corresponding to the second receiving beam 550-2.
  • the transmissions of the first version and the second version are performed after the receptions of the first repetition and the second repetition.
  • the transmission of the first version are be performed after the reception of the first repetition and before the reception of the second repetition, and the transmission of the second version may be performed after the reception of the second repetition.
  • FIG. 6 illustrates a flowchart of an example method 600 of communication implemented at the terminal device in accordance with some embodiments of the present disclosure.
  • the method 600 can be implemented at the terminal device 110 shown in FIG. 1.
  • the method 600 will be described with reference to FIG. 1. It is to be understood that the method 600 may include additional acts not shown and/or may omit some shown acts, and the scope of the present disclosure is not limited in this regard.
  • the terminal device 110 transmits, to the reference device 120, positioning related information.
  • the terminal device 110 receives, from the reference device 120, a set of reference signals for sidelink positioning of the terminal device 110.
  • the terminal device 110 transmits, to the reference device 120, a measurement report for at least a part of the set of reference signals.
  • the terminal device 110 may transmit the positioning related information to a plurality of reference devices including the reference device, each of the plurality of reference devices assisting in sidelink positioning of the terminal device.
  • the terminal device 110 may transmit the positioning related information by a first stage of sidelink control information (SCI) .
  • SCI sidelink control information
  • the terminal device 110 may transmit a first part of the positioning related information by a first stage of sidelink control information (SCI) , and transmit a second part of the positioning related information by a second stage of the SCI.
  • SCI sidelink control information
  • the first stage of the SCI may comprise an indication that the second part of the positioning related information is comprised in the second stage of the SCI.
  • the terminal device 110 may transmit the positioning related information by a second stage of sidelink control information (SCI) .
  • SCI sidelink control information
  • a first stage of the SCI may comprise an indication that the positioning related information is comprised in the second stage of SCI.
  • the terminal device 110 may transmit the positioning related information on a physical sidelink shared channel (PSSCH) , and wherein an indication that the positioning related information is transmitted on the PSSCH is comprised in at least one of: a first stage of sidelink control information (SCI) or a second stage of the SCI.
  • PSSCH physical sidelink shared channel
  • a first part of the positioning related information may be zone information indicating a zone in which the terminal device is located.
  • a first stage of sidelink control information may comprise an indication that the zone information is used for sidelink positioning of the terminal device.
  • a second part of the positioning related information other than the zone information may be transmitted on a physical sidelink shared channel (PSSCH) .
  • PSSCH physical sidelink shared channel
  • the positioning related information may comprise a set of identifiers for each of the plurality of reference devices, the set of identifiers being associated with a determination of the set of reference signals.
  • the positioning related information may comprise a shift value for each of the plurality of reference devices, the shift value being associated with a determination of the set of reference signals.
  • the positioning related information may comprise at least one of: an indication for a transmission time period for the reference device to transmit the set of reference signals, and an indication for a reporting time period for the terminal device to transmit the measurement report.
  • the terminal device 110 may transmit, to the reference device, at an end point of the transmission time period, an indication of terminating or restarting a positioning procedure with the reference device.
  • the terminal device 110 may receive, from the reference device, within the transmission time period, an indication that the transmission of the set of reference signals is to be completed.
  • the terminal device 110 may transmit, to the reference device, within the reporting time period, an indication that the transmission of the measurement report is completed.
  • the reference device may be a first reference device and the plurality of reference devices comprise a second reference device, and wherein the positioning related information may comprise at least one of: an indication for a first transmission time period for the first reference device to transmit the set of reference signals; an indication for a first reporting time period for the terminal device to transmit the measurement report associated with the first reference device; an indication for a second transmission time period for the second reference device to transmit a set of reference signals; and an indication for a second reporting time period for the terminal device to transmit a measurement report associated with the second reference device.
  • the positioning related information may comprise an association between a corresponding reference signal and a time domain resource for transmitting the measurement report.
  • the terminal device 110 may determine, for the at least a part of the set of reference signals, respective time domain resources for transmitting the measurement report; and transmit, to the reference device, the measurement report on each of the time domain resources using a transmitting beam corresponding to a receiving beam for receiving the set of reference signals.
  • the terminal device 110 may determine, for the set of reference signals, respective time domain resources for transmitting the measurement report; and transmit, to the reference device, the measurement report on each of the time domain resources using a transmitting beam corresponding to a receiving beam for receiving the set of reference signals.
  • the terminal device 110 may, in response to failure of transmission of the measurement report at a first transmission occasion of a plurality of transmission occasions comprised in the time domain resource, transmit the measurement report at a second transmission occasion of the plurality of transmission occasions using a transmitting beam corresponding to a receiving beam for receiving the set of reference signals.
  • the terminal device 110 may receive a first repetition of the set of reference signals using a first receiving beam; and receive a second repetition of the set of reference signals using a second receiving beam different from the first receiving beam.
  • the terminal device 110 may transmit a first version of the measurement report for the first repetition using a first transmitting beam corresponding to the first receiving beam; and transmit a second version of the measurement report for the second repetition using a second transmitting beam corresponding to the second receiving beam.
  • the transmissions of the first version and the second version may be performed after the receptions of the first repetition and the second repetition.
  • the transmission of the first version may be performed after the reception of the first repetition and before the reception of the second repetition, and the transmission of the second version may be performed after the reception of the second repetition.
  • the time domain resource may be with a granularity of a slot or at least a symbol.
  • the reference device may comprise a roadside unit or a voluntary road user device or terminal.
  • FIG. 7 illustrates a flowchart of an example method 700 of communication implemented at the reference device in accordance with some embodiments of the present disclosure.
  • the method 700 can be implemented at the reference device 120 shown in FIG. 1.
  • the method 700 will be described with reference to FIG. 1. It is to be understood that the method 700 may include additional acts not shown and/or may omit some shown acts, and the scope of the present disclosure is not limited in this regard.
  • the reference device 120 receives, from the terminal device 110, positioning related information.
  • the reference device 120 transmits to the terminal device 110, a set of reference signals for sidelink positioning of the terminal device.
  • the reference device 120 receives, from the terminal device 110, a measurement report for at least a part of the set of reference signals.
  • the reference device 120 may receive the positioning related information by a first stage of sidelink control information (SCI) .
  • SCI sidelink control information
  • the reference device 120 may receive a first part of the positioning related information by a first stage of sidelink control information (SCI) , and receive a second part of the positioning related information by a second stage of the SCI.
  • SCI sidelink control information
  • the first stage of the SCI may comprise an indication that the second part of the positioning related information is comprised in the second stage of the SCI.
  • the reference device 120 may receive the positioning related information by a second stage of sidelink control information (SCI) .
  • SCI sidelink control information
  • a first stage of the SCI may comprise an indication that the positioning related information is comprised in the second stage of SCI.
  • the reference device 120 may receive the positioning related information on a physical sidelink shared channel (PSSCH) , and wherein an indication that the positioning related information is transmitted on the PSSCH is comprised in at least one of: a first stage of sidelink control information (SCI) or a second stage of the SCI.
  • PSSCH physical sidelink shared channel
  • a first part of the positioning related information may be zone information indicating a zone in which the terminal device is located, and the reference device 120 may determine to assist in sidelink positioning of the terminal device based on the zone information.
  • a first stage of sidelink control information may comprise an indication that the zone information is used for sidelink positioning of the terminal device.
  • a second part of the positioning related information other than the zone information may be received on a physical sidelink control channel (PSSCH) .
  • PSSCH physical sidelink control channel
  • the positioning related information may comprise a set of identifiers, the set of identifier indicating a set of reference signal sequences, and the reference device 120 generate a set of reference signals based on the set of reference signal sequences.
  • the positioning related information may comprise a shift value
  • the reference device 120 may apply the shift value in combination with an identifier of a reference signal sequence to determine a set of reference signal sequences; and generate a set of reference signals based on the set of reference signal sequences.
  • the positioning related information may comprise at least one of: an indication for a transmission time period for the reference device to transmit the set of reference signals, and an indication for a reporting time period for the terminal device to transmit the measurement report.
  • the reference device 120 may receive, from the terminal device, at an end point of the transmission time period, an indication of terminating or restarting a positioning procedure with the reference device.
  • the reference device 120 may transmit, to the reference device, within the transmission time period, an indication that the transmission of the set of reference signals is to be completed.
  • the reference device 120 may receive, from the terminal device, within the reporting time period, an indication that the transmission of the measurement report is completed.
  • the positioning related information may comprise an association between a corresponding reference signal and a time domain resource for receiving the measurement report.
  • the reference device 120 may determine, for the at least a part of the set of reference signals, respective time domain resources for receiving the measurement report; andreceive, from the terminal device, the measurement report on each of the time domain resources using a receiving beam corresponding to a transmitting beam for transmitting a corresponding reference signal.
  • the reference device 120 may determine, for the set of reference signals, respective time domain resources for receiving the measurement report; and receive, from the terminal device, the measurement report on each of the time domain resources using a receiving beam corresponding to a transmitting beam for transmitting a corresponding reference signal.
  • the reference device 120 may, in response to failure of reception of the measurement report at a first transmission occasion of a plurality of transmission occasions comprised in the time domain resource, receive the measurement report at a second transmission occasion of the plurality of transmission occasions using a receiving beam corresponding to a transmitting beam for transmitting the reference signal.
  • the reference device 120 may transmit a first repetition of the set of reference signals; and transmit a second repetition of the set of reference signals.
  • the reference device 120 may receive a first version of the measurement report for the first repetition; and receive a second version of the measurement report for the second repetition.
  • the receptions of the first version and the second version may be performed after the transmissions of the first repetition and the second repetition.
  • the reception of the first version may be performed after the transmission of the first repetition and before the transmission of the second repetition, and the reception of the second version may be performed after the transmission of the second repetition.
  • the time domain resource may be with a granularity of a slot or at least a symbol.
  • the reference device may comprise a roadside unit or a voluntary road user device or terminal.
  • FIG. 8 is a simplified block diagram of a device 800 that is suitable for implementing some embodiments of the present disclosure.
  • the device 800 can be considered as a further example embodiment of the terminal device 110, or the reference device 120 as shown in FIG. 1. Accordingly, the device 800 can be implemented at or as at least a part of the terminal device 110 or the reference device 120 as shown in FIG. 1.
  • the device 800 includes a processor 810, a memory 820 coupled to the processor 810, a suitable transmitter (TX) and receiver (RX) 840 coupled to the processor 810, and a communication interface coupled to the TX/RX 840.
  • the memory 820 stores at least a part of a program 830.
  • the TX/RX 840 is for bidirectional communications.
  • the TX/RX 840 has at least one antenna to facilitate communication, though in practice an Access Node mentioned in this application may have several ones.
  • the communication interface may represent any interface that is necessary for communication with other network elements, such as X2 interface for bidirectional communications between gNBs or eNBs, S1 interface for communication between a Mobility Management Entity (MME) /Serving Gateway (S-GW) and the gNB or eNB, Un interface for communication between the gNB or eNB and a relay node (RN) , or Uu interface for communication between the gNB or eNB and a terminal device.
  • MME Mobility Management Entity
  • S-GW Serving Gateway
  • Un interface for communication between the gNB or eNB and a relay node (RN)
  • Uu interface for communication between the gNB or eNB and a terminal device.
  • the program 830 is assumed to include program instructions that, when executed by the associated processor 810, enable the device 800 to operate in accordance with the embodiments of the present disclosure, as discussed herein with reference to FIGS. 1-5G.
  • the embodiments herein may be implemented by computer software executable by the processor 810 of the device 800, or by hardware, or by a combination of software and hardware.
  • the processor 810 may be configured to implement various embodiments of the present disclosure.
  • a combination of the processor 810 and memory 820 may form processing means 850 adapted to implement various embodiments of the present disclosure.
  • the memory 820 may be of any type suitable to the local technical network and may be implemented using any suitable data storage technology, such as a non-transitory computer readable storage medium, semiconductor based memory devices, magnetic memory devices and systems, optical memory devices and systems, fixed memory and removable memory, as non-limiting examples. While only one memory 820 is shown in the device 800, there may be several physically distinct memory modules in the device 800.
  • the processor 810 may be of any type suitable to the local technical network, and may include one or more of general purpose computers, special purpose computers, microprocessors, digital signal processors (DSPs) and processors based on multicore processor architecture, as non-limiting examples.
  • the device 800 may have multiple processors, such as an application specific integrated circuit chip that is slaved in time to a clock which synchronizes the main processor.
  • a terminal device comprises circuitry configured to perform method 600.
  • a reference device comprises circuitry configured to perform method 700.
  • the components included in the apparatuses and/or devices of the present disclosure may be implemented in various manners, including software, hardware, firmware, or any combination thereof.
  • one or more units may be implemented using software and/or firmware, for example, machine-executable instructions stored on the storage medium.
  • parts or all of the units in the apparatuses and/or devices may be implemented, at least in part, by one or more hardware logic components.
  • FPGAs Field-programmable Gate Arrays
  • ASICs Application-specific Integrated Circuits
  • ASSPs Application-specific Standard Products
  • SOCs System-on-a-chip systems
  • CPLDs Complex Programmable Logic Devices
  • various embodiments of the present disclosure may be implemented in hardware or special purpose circuits, software, logic or any combination thereof. Some aspects may be implemented in hardware, while other aspects may be implemented in firmware or software which may be executed by a controller, microprocessor or other computing device. While various aspects of embodiments of the present disclosure are illustrated and described as block diagrams, flowcharts, or using some other pictorial representation, it will be appreciated that the blocks, apparatus, systems, techniqterminal devices or methods described herein may be implemented in, as non-limiting examples, hardware, software, firmware, special purpose circuits or logic, general purpose hardware or controller or other computing devices, or some combination thereof.
  • the present disclosure also provides at least one computer program product tangibly stored on a non-transitory computer readable storage medium.
  • the computer program product includes computer-executable instructions, such as those included in program modules, being executed in a device on a target real or virtual processor, to carry out the process or method as described above with reference to any of FIGS. 1 to 5G.
  • program modules include routines, programs, libraries, objects, classes, components, data structures, or the like that perform particular tasks or implement particular abstract data types.
  • the functionality of the program modules may be combined or split between program modules as desired in various embodiments.
  • Machine-executable instructions for program modules may be executed within a local or distributed device. In a distributed device, program modules may be located in both local and remote storage media.
  • Program code for carrying out methods of the present disclosure may be written in any combination of one or more programming languages. These program codes may be provided to a processor or controller of a general purpose computer, special purpose computer, or other programmable data processing apparatus, such that the program codes, when executed by the processor or controller, cause the functions/operations specified in the flowcharts and/or block diagrams to be implemented.
  • the program code may execute entirely on a machine, partly on the machine, as a stand-alone software package, partly on the machine and partly on a remote machine or entirely on the remote machine or server.
  • the above program code may be embodied on a machine readable medium, which may be any tangible medium that may contain, or store a program for use by or in connection with an instruction execution system, apparatus, or device.
  • the machine readable medium may be a machine readable signal medium or a machine readable storage medium.
  • a machine readable medium may include but not limited to an electronic, magnetic, optical, electromagnetic, infrared, or semiconductor system, apparatus, or device, or any suitable combination of the foregoing.
  • machine readable storage medium More specific examples of the machine readable storage medium would include 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) , an optical fiber, a portable compact disc read-only memory (CD-ROM) , an optical storage device, a magnetic storage device, or any suitable combination of the foregoing.
  • RAM random access memory
  • ROM read-only memory
  • EPROM or Flash memory erasable programmable read-only memory
  • CD-ROM portable compact disc read-only memory
  • magnetic storage device or any suitable combination of the foregoing.
  • embodiments of the present disclosure may provide the following solutions.
  • a method of communication comprises: transmitting, at a terminal device to a reference device, positioning related information; receiving, from the reference device, a set of reference signals for sidelink positioning of the terminal device; and transmitting, to the reference device, a measurement report for at least a part of the set of reference signals.
  • transmitting the positioning related information comprises: transmitting the positioning related information to a plurality of reference devices including the reference device, each of the plurality of reference devices assisting in sidelink positioning of the terminal device.
  • transmitting the positioning related information comprises: transmitting the positioning related information by a first stage of sidelink control information (SCI) .
  • SCI sidelink control information
  • transmitting the positioning related information comprises: transmitting a first part of the positioning related information by a first stage of sidelink control information (SCI) , and transmitting a second part of the positioning related information by a second stage of the SCI.
  • SCI sidelink control information
  • the first stage of the SCI comprises an indication that the second part of the positioning related information is comprised in the second stage of the SCI.
  • transmitting the positioning related information comprises: transmitting the positioning related information by a second stage of sidelink control information (SCI) .
  • SCI sidelink control information
  • a first stage of the SCI comprises an indication that the positioning related information is comprised in the second stage of SCI.
  • transmitting the positioning related information comprises: transmitting the positioning related information on a physical sidelink shared channel (PSSCH) , and wherein an indication that the positioning related information is transmitted on the PSSCH is comprised in at least one of: a first stage of sidelink control information (SCI) or a second stage of the SCI.
  • PSSCH physical sidelink shared channel
  • SCI sidelink control information
  • a first part of the positioning related information is zone information indicating a zone in which the terminal device is located.
  • a first stage of sidelink control information comprises an indication that the zone information is used for sidelink positioning of the terminal device.
  • a second part of the positioning related information other than the zone information is transmitted on a physical sidelink shared channel (PSSCH) .
  • PSSCH physical sidelink shared channel
  • the positioning related information comprises a set of identifiers for each of the plurality of reference devices, the set of identifiers being associated with a determination of the set of reference signals.
  • the positioning related information comprises a shift value for each of the plurality of reference devices, the shift value being associated with a determination of the set of reference signals.
  • the positioning related information comprises at least one of: an indication for a transmission time period for the reference device to transmit the set of reference signals, and an indication for a reporting time period for the terminal device to transmit the measurement report.
  • the method as above further comprises: transmitting, to the reference device, at an end point of the transmission time period, an indication of terminating or restarting a positioning procedure with the reference device.
  • the method as above further comprises: receiving, from the reference device, within the transmission time period, an indication that the transmission of the set of reference signals is to be completed.
  • the method as above further comprises: transmitting, to the reference device, within the reporting time period, an indication that the transmission of the measurement report is completed.
  • the reference device is a first reference device and the plurality of reference devices comprise a second reference device
  • the positioning related information comprises at least one of: an indication for a first transmission time period for the first reference device to transmit the set of reference signals; an indication for a first reporting time period for the terminal device to transmit the measurement report associated with the first reference device; an indication for a second transmission time period for the second reference device to transmit a set of reference signals; and an indication for a second reporting time period for the terminal device to transmit a measurement report associated with the second reference device.
  • the positioning related information comprises an association between a corresponding reference signal and a time domain resource for transmitting the measurement report.
  • transmitting the measurement report comprises: determining, for the at least a part of the set of reference signals, respective time domain resources for transmitting the measurement report; and transmitting, to the reference device, the measurement report on each of the time domain resources using a transmitting beam corresponding to a receiving beam for receiving the set of reference signals.
  • transmitting the measurement report comprises: determining, for the set of reference signals, respective time domain resources for transmitting the measurement report; and transmitting, to the reference device, the measurement report on each of the time domain resources using a transmitting beam corresponding to a receiving beam for receiving the set of reference signals.
  • transmitting the measurement report comprises: in response to failure of transmission of the measurement report at a first transmission occasion of a plurality of transmission occasions comprised in the time domain resource, transmitting the measurement report at a second transmission occasion of the plurality of transmission occasions using a transmitting beam corresponding to a receiving beam for receiving the set of reference signals.
  • receiving the set of reference signals comprises: receiving a first repetition of the set of reference signals using a first receiving beam; and receiving a second repetition of the set of reference signals using a second receiving beam different from the first receiving beam.
  • transmitting the measurement report comprises: transmitting a first version of the measurement report for the first repetition using a first transmitting beam corresponding to the first receiving beam; and transmitting a second version of the measurement report for the second repetition using a second transmitting beam corresponding to the second receiving beam.
  • the transmissions of the first version and the second version are performed after the receptions of the first repetition and the second repetition.
  • the transmission of the first version is performed after the reception of the first repetition and before the reception of the second repetition, and the transmission of the second version is performed after the reception of the second repetition.
  • a method of communication comprises: the time domain resource is with a granularity of a slot or at least a symbol.
  • the reference device comprises a roadside unit or a voluntary road user device or terminal.
  • a method of communication comprises: receiving, at a reference device from a terminal device, positioning related information; transmitting, to the terminal device, a set of reference signals for sidelink positioning of the terminal device; and receiving, from the terminal device, a measurement report for at least a part of the set of reference signals.
  • receiving the positioning related information comprises: receiving the positioning related informationby a first stage of sidelink control information (SCI) .
  • SCI sidelink control information
  • receiving the positioning related information comprises: receiving a first part of the positioning related information by a first stage of sidelink control information (SCI) , and receiving a second part of the positioning related information by a second stage of the SCI.
  • SCI sidelink control information
  • the first stage of the SCI comprises an indication that the second part of the positioning related information is comprised in the second stage of the SCI.
  • receiving the positioning related information comprises: receiving the positioning related information by a second stage of sidelink control information (SCI) .
  • SCI sidelink control information
  • a first stage of the SCI comprises an indication that the positioning related information is comprised in the second stage of SCI.
  • receiving the positioning related information comprises: receiving the positioning related information on a physical sidelink shared channel (PSSCH) , and wherein an indication that the positioning related information is transmitted on the PSSCH is comprised in at least one of: a first stage of sidelink control information (SCI) or a second stage of the SCI.
  • PSSCH physical sidelink shared channel
  • SCI sidelink control information
  • a first part of the positioning related information is zone information indicating a zone in which the terminal device is located, and the method further comprises: determining to assist in sidelink positioning of the terminal device based on the zone information.
  • a first stage of sidelink control information comprises an indication that the zone information is used for sidelink positioning of the terminal device.
  • a second part of the positioning related information other than the zone information is received on a physical sidelink control channel (PSSCH) .
  • PSSCH physical sidelink control channel
  • the positioning related information comprises a set of identifiers, the set of identifier indicating a set of reference signal sequences, and the method further comprises: generating a set of reference signals based on the set of reference signal sequences.
  • the positioning related information comprises a shift value
  • the method further comprises: applying the shift value in combination with an identifier of a reference signal sequence to determine a set of reference signal sequences; and generating a set of reference signals based on the set of reference signal sequences.
  • the positioning related information comprises at least one of: an indication for a transmission time period for the reference device to transmit the set of reference signals, and an indication for a reporting time period for the terminal device to transmit the measurement report.
  • the method as above further comprises: receiving, from the terminal device, at an end point of the transmission time period, an indication of terminating or restarting a positioning procedure with the reference device.
  • the method as above further comprises: transmitting, to the reference device, within the transmission time period, an indication that the transmission of the set of reference signals is to be completed.
  • the method as above further comprises: receiving, from the terminal device, within the reporting time period, an indication that the transmission of the measurement report is completed.
  • the positioning related information comprises an association between a corresponding reference signal and a time domain resource for receiving the measurement report.
  • receiving the measurement report comprises: determining, for the at least a part of the set of reference signals, respective time domain resources for receiving the measurement report; and receiving, from the terminal device, the measurement report on each of the time domain resources using a receiving beam corresponding to a transmitting beam for transmitting a corresponding reference signal.
  • receiving the measurement report comprises: determining, for the set of reference signals, respective time domain resources for receiving the measurement report; and receiving, from the terminal device, the measurement report on each of the time domain resources using a receiving beam corresponding to a transmitting beam for transmitting a corresponding reference signal.
  • receiving the measurement report comprises: in response to failure of reception of the measurement report at a first transmission occasion of a plurality of transmission occasions comprised in the time domain resource, receiving the measurement report at a second transmission occasion of the plurality of transmission occasions using a receiving beam corresponding to a transmitting beam for transmitting the reference signal.
  • transmitting the set of reference signals comprises: transmitting a first repetition of the set of reference signals; and transmitting a second repetition of the set of reference signals.
  • receiving the measurement report comprises: receiving a first version of the measurement report for the first repetition; and receiving a second version of the measurement report for the second repetition.
  • the receptions of the first version and the second version are performed after the transmissions of the first repetition and the second repetition.
  • the reception of the first version is performed after the transmission of the first repetition and before the transmission of the second repetition, and the reception of the second version is performed after the transmission of the second repetition.
  • the time domain resource is with a granularity of a slot or at least a symbol.
  • the reference device comprises a roadside unit or a voluntary road user device or terminal.
  • a terminal device for communication comprises: a processor; and a memory coupled to the processor and storing instructions thereon, the instructions, when executed by the processor, causing the terminal device to perform the method according to some of the above embodiments.
  • a reference device for communication comprises: a processor; and a memory coupled to the processor and storing instructions thereon, the instructions, when executed by the processor, causing the reference device to perform the method according to some of the above embodiments.
  • a computer readable medium having instructions stored thereon, the instructions, when executed on at least one processor, causing the at least one processor to perform the method according to some of the above embodiments.

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

Abstract

La présente divulgation concerne, selon certains modes de réalisation, des procédés, des dispositifs, et un support lisible par ordinateur pour des communications. Selon des modes de réalisation de la présente divulgation, un dispositif terminal transmet, à un dispositif de référence, des informations relatives au positionnement. En outre, le dispositif terminal reçoit, en provenance du dispositif de référence, un ensemble de signaux de référence pour un positionnement de liaison latérale du dispositif terminal. De plus, le dispositif terminal transmet, au dispositif de référence, un rapport de mesure pour au moins une partie de l'ensemble de signaux de référence.
PCT/CN2022/096984 2022-06-02 2022-06-02 Procédés, dispositifs et support lisible par ordinateur pour des communications WO2023231028A1 (fr)

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Citations (3)

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Publication number Priority date Publication date Assignee Title
WO2021086093A1 (fr) * 2019-11-03 2021-05-06 엘지전자 주식회사 Procédé et dispositif de transmission de s-prs dans nr v2x
US20210297206A1 (en) * 2020-03-19 2021-09-23 Qualcomm Incorporated Determination of positioning reference signal resources in out-of-coverage sidelink-assisted cooperative positioning
CN114375600A (zh) * 2019-08-15 2022-04-19 Idac控股公司 Wtru辅助定位

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Publication number Priority date Publication date Assignee Title
CN114375600A (zh) * 2019-08-15 2022-04-19 Idac控股公司 Wtru辅助定位
WO2021086093A1 (fr) * 2019-11-03 2021-05-06 엘지전자 주식회사 Procédé et dispositif de transmission de s-prs dans nr v2x
US20210297206A1 (en) * 2020-03-19 2021-09-23 Qualcomm Incorporated Determination of positioning reference signal resources in out-of-coverage sidelink-assisted cooperative positioning

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