EP-4740659-A1 - SYSTEMS AND METHODS FOR SIDELINK POSITIONING FOR DEVICE-TO-DEVICE COMMUNICATIONS

EP4740659A1EP 4740659 A1EP4740659 A1EP 4740659A1EP-4740659-A1

Abstract

The present disclosure relates to systems, apparatuses, methods, and non-transitory computer-readable media for receiving, by a first wireless communication device from a higher layer, Sidelink Positioning Reference Signal (SL PRS) resource configuration for communicating SL PRS in a time-domain unit and sending, by the first wireless communication device, the SL PRS according to the SL PRS resource configuration to a second wireless communication device.

Inventors

LI, Mengzhen
JIANG, Chuangxin
YANG, QI
PAN, YU
LU, YOUXIONG
WANG, CONG
LOU, Junpeng
XING, Weimin

Assignees

ZTE Corporation

Dates

Publication Date: 20260513
Application Date: 20230811

Claims (20)

A wireless communication method, comprising: receiving, by a first wireless communication device from a higher layer, Sidelink Positioning Reference Signal (SL PRS) resource configuration for communicating SL PRS in a time-domain unit; sending, by the first wireless communication device, the SL PRS according to the SL PRS resource configuration to a second wireless communication device.
The method of claim 1, wherein at least of: time-domain configuration of a SL PRS resource of the first wireless communication device is aligned with a time-domain configuration of a SL PRS resource of a plurality of wireless communication devices; the SL PRS resource of the first wireless communication device is Time Division Multiplexed (TDMed) , comb-based multiplexed, or both TDMed and comb-based multiplexed with the SL PRS resource of the plurality of wireless communication devices within the time-domain unit; the SL PRS resource is configured within a resource pool, the resource pool is a dedicated resource pool or a shared resource pool; the time-domain unit is a slot; and the SL PRS resource configuration is received from the higher layer via signaling comprising at least one of: Long Term Evolution Positioning Protocol (LPP) from a Location Management Function (LMF) ; Sidelink Positioning Protocol (SLPP) from the LMF or a wireless communication device; Radio Access Control (RRC) or Medium Access Control (MAC) from a Base Station (BS) , the higher layer of the first wireless communication device, wherein the higher layer comprises at least one of a MAC layer, an RRC layer, or a Non-Access Stratum (NAS) layer; or the SL PRS resource configuration is pre-configured.
The method of claim 1, wherein the SL PRS resource configuration comprises a time-domain configuration, wherein the time-domain configuration comprises at least one of a time-domain starting point, a time-domain length, or a SL PRS resource location in the time-domain unit.
The method of claim 1, further comprising receiving, by the first wireless communication device, a location for an Automatic Gain Control (AGC) resource in the time-domain unit for each of at least one or a plurality resource pool, for each of at least one frequency-domain resource, for each of at least one carrier, or for a plurality of carriers used in Carrier Aggregation (CA) .
The method of claim 4, wherein the AGC resource is defined by at least one of an AGC time-domain resource preceding one of the SL PRS resources, an AGC time-domain resource preceding a resource used in communicating a Physical Sidelink Control Channel (PSCCH) , or a starting time used for SL positioning in the time-domain resource.
The method of claim 1, wherein the SL PRS resource configuration comprises configurations for time-domain SL PRS resources in the time-domain unit for each of at least one or a plurality of resource pools, for each of at least one frequency-domain resource, for each of at least one carrier, or for a plurality of carriers used in Carrier Aggregation (CA) .
The method of claim 1, further comprising sending, by the first wireless communication device to a plurality of wireless communication devices, a Sidelink Control Information (SCI) to indicate a number of SL PRS reservations for transmissions with or without periodic reservation, wherein at least one of: a resource for transmitting the SCI and a SL PRS resource in the time-domain unit are mapped via a one-to-one mapping relationship; a resource for transmitting the SCI and multiple SL PRS resources in the time-domain unit are mapped via a one-to-more mapping relationship; and the second wireless communication device is one of the plurality of wireless communication devices.
The method of claim 7, wherein the SCI reserves only a SL PRS resource belonging to a SL PRS resource packet, wherein the SL PRS resource packet comprises one or more SL PRS resources mapped to the resource for transmitting the SCI.
The method of claim 1, further comprising sending, by the first wireless communication device to one of a plurality of wireless communication devices, a Sidelink Control Information (SCI) comprising a number of SL PRS resource Identifiers (IDs) , wherein the number of SL PRS resource IDs is less than the number of SL PRS reservations for transmissions without periodic reservation by 1.
The method of claim 1, further comprising sending, by the first wireless communication device to one of a plurality of wireless communication devices, a Sidelink Control Information (SCI) comprising a number of SL PRS resource Identifiers (IDs) , wherein the number of SL PRS resource IDs is equal to the number of SL PRS reservations for transmissions without periodic reservation.
The method of claim 1, further comprising sending, by the first wireless communication device to one of a plurality of wireless communication devices, a Sidelink Control Information (SCI) comprising one or multiple list of information, wherein the information comprises at least one or more of: source ID, destination ID, resource reservation period, SL PRS priority, or cast type.
The method of claim 1, wherein for transmitting the SL PRS a physical layer of the first wireless communication device determines at least one of: one or more SL PRS resources; a resource for transmitting Sidelink Control Information (SCI) ; a number of time-domain resources; a resource pool from which the one or more SL PRS resources are to be transmitted; a priority for SL PRS transmission; a remaining packet delay budget; a resource reservation period; or a subset of resources for pre-emption and re-evaluation.
The method of claim 1, wherein for transmitting the SL PRS, a high layer of the first wireless communication device determines at least one of: one or more SL PRS resources; a resource for transmitting Sidelink Control Information (SCI) ; a number of time-domain resources; a resource pool from which the one or more SL PRS resources are to be transmitted; a priority for SL PRS transmission; a remaining packet delay budget; a resource reservation period; or a subset of resources for pre-emption and re-evaluation, wherein the higher layer comprises at least one of a Medium Access Control (MAC) layer, a Radio Resource Control (RRC) layer, or a Non-Access Stratum (NAS) layer.
The method of claim 1, wherein the second wireless communication device receives reservation from the first wireless communication device of a first one or more SL PRS resources via a first Sidelink Control Information (SCI) in a first time-domain unit; the second wireless communication device receives reservation of one or more SL PRS resources which is the same as the first one or more SL PRS resources from the first wireless communication device via a second SCI in a second time-domain unit; the second wireless communication device determines that the reservation with respect to the first one or more SL PRS resources indicated in the first SCI is invalid.
The method of claim 1, wherein the second wireless communication device receives reservation from the first wireless communication device of a first one or more SL PRS resources via a first Sidelink Control Information (SCI) in a first time-domain unit; the second wireless communication device receives reservation of one or more SL PRS resources different from the first one or more SL PRS resources from the first wireless communication device via a second SCI in a second time-domain unit; the second wireless communication device determines that the reservation with respect to the first one or more SL PRS resources indicated in the first SCI is valid.
The method of claim 1, wherein the second wireless communication device receives reservation from the first wireless communication device of a first one or more SL PRS resource (s) via a first Sidelink Control Information (SCI) in a first time-domain unit; the second wireless communication device receives reservation of a second one or more SL PRS resources from the first wireless communication device via a second SCI in a second time-domain unit, wherein the first SCI and the second SCI is the same PSCCH resource; the second wireless communication device determines that the reservation with respect to the first one or more SL PRS resources indicated in the first SCI is invalid.
The method of claim 1, wherein the second wireless communication device receives reservation from the first wireless communication device of a first one or more SL PRS resources via a first Sidelink Control Information (SCI) in a first time-domain unit; the second wireless communication device receives reservation of a second one or more SL PRS resources from the first wireless communication device via a second SCI in a second time-domain unit wherein the first SCI and the second SCI is different PSCCH resources; the second wireless communication device determines that the reservation with respect to the first one or more SL PRS resources indicated in the first SCI is valid.
The method of one of claims 14, 15, 16, or 17, wherein the first SCI and the second SCI have at least one of: a same source ID; a same destination ID; a same cast type; a same resource reservation period; or a same SL PRS priority.
The method of claim 1, further comprising at least one of: receiving, by the first wireless communication device from a device, a User Equipment (UE) information request via Long Term Evolution Positioning Protocol (LPP) or Sidelink Positioning Protocol (SLPP) ; or transmitting, by the first wireless communication device to a device, a UE information report via the LPP or the SLPP.
The method of claim 19, the UE information request or report comprising at least one of UE Identifier (ID) , System Frame Number (SFN) , Direct Frame Number (DFN) , SFN initialization time, synchronization reference source, New Radio (NR) Physical Layer Cell ID (PCI) , NR Cell Global Identify (CGI) , NR Absolute Radio Frequency Channel Number (ARFCN) , SL PRS configuration, geographical coordinates, Antenna Reference Point (ARP) geographical coordinates, UE type, UE Transmission (Tx) Timing Error Group (TEG) association, or UE Tx ARP association for an anchor wireless communication device.

Description

SYSTEMS AND METHODS FOR SIDELINK POSITIONING FOR DEVICE-TO-DEVICE COMMUNICATIONS TECHNICAL FIELD The disclosure relates generally to wireless communications and, more particularly, to device-to-device communications. BACKGROUND Sidelink (SL) communication refers to wireless radio communication between two or more User Equipments (UEs) . In this type of communications, two or more UEs that are geographically proximate to each other can communicate without being routed to a network (e.g., Base Station (BS) ) or a core network. Data transmissions in SL communications are thus different from typical cellular network communications that include transmitting data to a BS and receiving data from a BS. In SL communications, data is transmitted directly from a source UE to a target UE through, for example the Unified Air Interface (e.g., PC5 interface) without passing through a BS. SUMMARY The example arrangements disclosed herein are directed to solving the issues relating to one or more of the problems presented in the prior art, as well as providing additional features that will become readily apparent by reference to the following detailed description when taken in conjunction with the accompany drawings. In accordance with various arrangements, example systems, methods, devices and computer program products are disclosed herein. It is understood, however, that these arrangements are presented by way of example and are not limiting, and it will be apparent to those of ordinary skill in the art who read the present disclosure that various modifications to the disclosed arrangements can be made while remaining within the scope of this disclosure. Some arrangements of the present disclosure relate to systems, methods, apparatuses, and non-transitory computer-readable media relating to receiving, by a first wireless communication device from a higher layer, Sidelink Positioning Reference Signal (SL PRS) resource configuration for communicating SL PRS in a time-domain unit and sending, by the first wireless communication device, the SL PRS according to the SL PRS resource configuration to a second wireless communication device. The above and other aspects and their implementations are described in greater detail in the drawings, the descriptions, and the claims. BRIEF DESCRIPTION OF THE DRAWINGS Various example arrangements of the present solution are described in detail below with reference to the following figures or drawings. The drawings are provided for purposes of illustration only and merely depict example arrangements of the present solution to facilitate the reader's understanding of the present solution. Therefore, the drawings should not be considered limiting of the breadth, scope, or applicability of the present solution. It should be noted that for clarity and ease of illustration, these drawings are not necessarily drawn to scale. FIG. 1A is a diagram illustrating an example wireless communication system, according to various arrangements. FIG. 1B is a diagram illustrating a block diagram of an example wireless communication system for transmitting and receiving downlink, uplink, and/or SL communication signals, according to various arrangements. FIG. 2 illustrates an example scenario for SL communications, according to various arrangements. FIG. 3 is a flowchart diagram illustrating an example method for communicating SL positioning-related transmission, according to various arrangements. FIG. 4 is a diagram illustrating an example allocation of time-domain resources and frequency-domain resources for transmitting SL PRSs of multiple UEs in a structure for a single slot, according to various arrangements. FIG. 5 is a diagram illustrating an example allocation of time-domain resources and frequency-domain resources for transmitting SL PRSs of multiple UEs in a structure for a single slot and a structure for a single slot, according to various arrangements. FIG. 6 is a diagram illustrating an example allocation of time-domain resources and frequency-domain resources for transmitting SL PRSs of multiple UEs in a structure, according to various arrangements. FIG. 7 is a diagram illustrating an example allocation of time-domain resources and frequency-domain resources for transmitting SL PRSs of multiple UEs in a structure, according to various arrangements. FIG. 8 is a diagram illustrating an example allocation of time-domain resources and frequency-domain resources for transmitting SL PRSs of multiple UEs in a structure, according to various arrangements. FIG. 9 is a diagram illustrating an example allocation of time-domain resources and frequency-domain resources for transmitting SL PRSs of multiple UEs in a structure, according to various arrangements. FIG. 10 is a signaling diagram illustrating an example method synchronization for UE-based positioning, according to various arrangements. FIG. 11 is a signaling diagram illustrating an example method synchronization for UE-based positioning, a