Methods, systems, and devices for wireless communication are described. A user equipment (UE) may receive, via first frequency ranges and first time periods, a plurality of sidelink control blocks that each indicate a sidelink positioning reference signal burst pattern for one or more sidelink UEs. The UE may receive, within a second frequency range and during a second time period, a plurality of multiplexed sidelink positioning reference signals from the one or more sidelink UEs in accordance with the sidelink positioning reference signal burst patterns. The UE may determine a position of the UE based at least in part on the receiving of the plurality of multiplexed sidelink positioning reference signals.

The present disclosure generally pertains to systems and methods for providing position information to aircraft using radio-frequency signals. By providing a ground-based solution entirely independent of GPS, systems of the present disclosure can make navigation systems more accurate and robust, enhancing their effectiveness and safety. More precisely, systems of the present disclosure may employ a series of ground-based beacon transmitters to provide coverage across a defined geographic region. Primary beacon transmitters may be used to generate a radio-frequency (RF) signal pulse with a highly regular frequency. A larger number of secondary beacon transmitters may be used to re-transmit these RF signal pulses with a tightly controlled turnaround time. A locating receiver can detect the arrival times of these pulses and use this information, along with stored information about the relative positions of the beacon transmitters, to determine its location.

An embodiment is a method for a terminal to perform an operation in a wireless communication system, the method including the steps of: transmitting a participation request message to peripheral anchor nodes (ANs); receiving participation response messages from candidate ANs among the peripheral ANs; selecting final ANs to be used for measuring the location of the terminal from among the candidate ANs; and measuring the location of the terminal using the final ANs.

The positions of multiple user equipments (UEs) are jointly determined by a location server using positioning measurements from a comment set of positioning reference signals (PRS), which may include downlink (DL) PRS, uplink (UL) PRS, sidelink (SL) PRS, or a combination thereof. The common set of PRS may be selected by the location server, e.g., based on a rough estimate of position of the UEs determined by the location server, a recommendation from the UEs, or a position report from the UEs. Once selected by the location server, an indication of the common set of PRS is sent to the UEs. The common set of PRS, alternatively, may be selected by one or more UEs, e.g., by a controlling UE or consensus, and one or more UEs provide an indication of the common set of PRS to the location server.

Methods and systems for wireless communication are provided. In one example, a method comprises: receiving, by a mobile device, a radio beam, the radio beam being a directional beam that propagates along an angle of departure with respect to an antenna that transmits the radio beam; identifying, by the mobile device, at least one of: the radio beam or a base station that operates the antenna; determining, by the mobile device, a position of the mobile device based on identifying at least one of the radio beam or the antenna of the base station; and outputting, by the mobile device, the position of the mobile device.

A responder user equipment (UE) in separate ranging sessions may determine whether there is a collision between the ranging signals assigned to broadcast in the separate ranging sessions. A collision in the ranging signals is detected when the ranging signals have the same frequencies and broadcast times, e.g., the broadcast time of one ranging signal is within a predetermined amount of time for the other ranging signal. When a collision in the ranging signals is detected, the responder UE sends a message to the initiator UE indicating the possibility of a collision. Available times for broadcasting the ranging signals may be determined, e.g., by the responder UE or the initiator UE. The initiator UE may initiate a new ranging session based on the available times for broadcasting the ranging signal or may proceed with the ranging session with the possibility that the responder UE will not participate.

An operating method of a first device (100) in a wireless communication system is presented. The method may comprise the steps of: receiving, from a second device (200), through a first band, a positioning request including at least one candidate band and information related to positioning; determining, from the at least one candidate band, a second band on the basis of the number of devices present in each candidate band and a value related to the communication range based on the first device (100); transmitting, to the second device (200), through the first band, a positioning response including information related to the determined second band; and transmitting, to the second device (200), through the second band, a first positioning reference signal (PRS) on the basis of the information related to positioning.

Aspects of the subject disclosure may include, for example, adaptively modifying a rate at which anchors broadcast messages into an area of interest based on tag presence status, where the messages may be used by tags to estimate tag position. Tag presence status may include an indication of whether a tag is present, a tag's position, velocity, acceleration, history, and the like. Areas of interest may be redefined based at least in part on tag presence status. Other embodiments are disclosed.

Disclosed are techniques for wireless positioning. In an aspect, a mobile device receives a timing synchronization offset parameter for a first cell of a set of cells, wherein the timing synchronization offset parameter represents a difference between a system frame number (SFN) initialization time of the first cell and an SFN initialization time of a reference cell, and processes the timing synchronization offset parameter for the first cell based on the SFN initialization time of the reference cell having changed.

Techniques described herein provide for the efficient usage of an RF channel for PRS transmissions by performing LBT sensing for a group of one or more vehicles (e.g., V2X vehicles) in a predetermined area by using an RSU. The RSU can determine a sequence in which an order for each vehicle in the group to transmit a respective PRS is defined, and provide the sequence to the group. The RSU may further perform the LBT functionality by listening to availability on the RF channel and, when the channel becomes available, the RSU can initiate this sequence by sending an initial PRS. This LBT sensing for a group can provide far more efficient usage of the RF channel than if LBT functionality were performed by each divisional vehicle.