Qualcomm Incorporated

University of Missouri

National Science Foundation

Weimin Duan

Alexandros Manolakos

Krishna Kiran Mukkavilli

Huilin Xu

Qiang Wu

Muhammad Sayed Khairy Abdelghaffar

Jun Ma

Wanshi Chen

Seyong Park

Tingfang Ji

Liangping Ma

Jay Kumar Sundararajan

Naga Bhushan

Sony Akkarakaran

Hung Dinh Ly

Jing Lei

Hwan Joon Kwon

Gokul Sridharan

Seyedkianoush Hosseini

Taesang Yoo

Joseph Binamira Soriaga

Renqiu Wang

Tao Luo

Juan Montojo

Yi Huang

Peter Pui Lok Ang

Peter S Gaal

Jing Jiang

Wei Jennifer Yang

Yu Zhang

Linhai He

Sven Fischer

Soo Bum Lee

Lianghai Ji

Karthik Anantha Swamy

Mehmet Izzet Gurelli

Hyojin Lee

Mohamad Sayed Hassan

Pavan Kumar Vitthaladevuni

June Namgoong

Jingchao Bao

Runxin Wang

Guttorm Ringstad Opshaug

Fei Huang

Chengshan Xiao

Yahong Rosa Zheng

Danlu Zhang

Xiaoxin Zhang

Bo Chen

Changhwan Park

Yuwei Ren

Yan Wang

Ruifeng Ma

Ning Luo

Bala Ramasamy

Charles Edward Wheatley

Alexander Dorosenco

Yuxiang Peng

Venkatraman Rajagopalan

Sooryanarayanan Gopalakrishnan

Onur Senel

Nitzan OFer

In an aspect, a wireless entity may transmit a first indication of one or more Doppler error group (DEG) identifiers (IDs) corresponding to one or more DEGs supported by the wireless entity, where each of the one or more DEGs is associated with a hardware configuration or an operational state of the wireless entity. The wireless entity may transmit a first set of measurements associated with a DEG ID of the one or more DEG IDs.

Doppler error groups for cellular-based radio frequency sensing

In an aspect, a position estimation entity may obtain a first differential round trip time (RTT) measurement based on a first RTT measurement between a user equipment (UE) and a first wireless node and a second RTT measurement between the UE and a second wireless node, may obtain a second differential RTT measurement based on a third RTT measurement between a third wireless node and the first wireless node and a fourth RTT measurement between the third wireless node and the second wireless node, and may determine a positioning estimate of the UE based at least in part on the first differential RTT measurement and the second differential RTT measurement.

Double-differential round trip time measurement

Aspects presented herein may improve the performance and accuracy of a UE positioning based on RIS, such as when the RIS has a limited number of control voltage sets available. In one aspect, a UE obtains an indication of beam pattern information for a set of DL beams for a network entity, where the set of DL beams is associated with an RIS. The UE adjusts a first transmission angle for a set of UL beams based on the beam pattern information and measurement for the set of DL beams, where the first transmission angle for the set of UL beams is adjusted to proximately align with a second transmission angle of the set of DL beams from the RIS. The UE transmits, via the RIS, the set of UL beams to the network entity based on the adjusted first transmission angle.

Beam adaptation for reconfigurable intelligent surface aided UE positioning

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a network node, an indication of a subset of tracking reference signal (TRS) resource sets from a plurality of TRS resource sets. The UE may receive, from the network node, a TRS availability indication bitmap that indicates an availability of a TRS associated with the subset of TRS resource sets. The UE may determine that the TRS is available based at least in part on the TRS availability indication bitmap. The UE may receive, from the network node, the TRS based at least in part on the TRS availability indication bitmap indicating that the TRS is available. Numerous other aspects are described.

Indicating an availability of a tracking reference signal (TRS) associated with a subset of TRS resource sets

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive, from a first network node, a first indication of satellite assistance information that is associated with a second network node, a second indication of first timing information that is associated with the satellite assistance information, and a third indication of second timing information that is associated with the satellite assistance information. The UE may transmit an uplink signal to the second network node based at least in part on validating the satellite assistance information using the second timing information. Numerous other aspects are described.

Mobility management in a non-terrestrial network

Techniques are disclosed for determining an object's location by using a Reconfigurable Intelligent Surface (RIS) to aid in RF sensing. Radar techniques can be used in which one or more base stations act as a transmitter and a receiving device acts as a receiver in a bistatic or multi-static radar configuration where an RIS directs signals transmitted by the one or more base stations to the receiving device. By comparing the time a line-of-sight (LOS) signal (redirected to the receiving device by the RIS) is received by the receiving device with that of an echo signal (redirected to the receiving device by the RIS) from a reflection of an RF signal from the object, a position of the object can be determined. Depending on desired functionality, this position can be determined by the receiving device or by a location server or other network entity.

Reconfigurable intelligent surface (RIS)-aided UE passive RF sensing

In a wireless communication system, cross-link interference (CLI) measurements are used for received signal strength indicator (RSSI) based positioning. A first user equipment (UE) receives from a base station, a first message comprising a cross-link interference (CLI) configuration; performs one or more CLI measurements associated with an uplink transmission of a second UE based on the CLI configuration; receives a second message comprising an uplink transmission power measurement of the second UE; determines a pathloss associated with the second UE based on the one or more CLI measurements and the uplink transmission power measurement; and determines a range between a location of the first UE and a location of the second UE based on the pathloss.

Cross-link interference (CLI) measurements for received signal strength indicator (RSSI) based positioning

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment may transmit, to a base station, an indication of a selected random access channel (RACH) procedure that is selected based at least in part on positioning state information (PSI) associated with the UE, wherein the PSI is based at least in part on one or more positioning measurements obtained by the UE; and receive, from the base station, a configuration of resources for the selected RACH procedure. Numerous other aspects are provided.

Positioning aided new radio race procedure

Methods, systems, and devices for wireless communications are described. In some examples, a UE may receive an indication of a set of sounding reference signal (SRS) parameters corresponding to a set of SRS resources for transmitting SRSs, where the set of SRS resources may refer to frequency, or time, or both. In some examples, the SRS parameters may include, among other examples, a frequency allocation, a frequency overlap parameter, a number of allocated symbols, a comb value, a cyclic shift, a comb offset, a frequency hopping parameter, a repetition parameter, a symbol grouping parameter, or any combination thereof. The UE may determine an SRS configuration for the one or more SRSs based on the set of SRS parameters and transmit the one or more SRSs based on the configuration. In some examples, the SRS configuration includes a configuration for SRS frequency hopping, or SRS repetition, or both.

Enhanced sounding reference signal resource configurations

A first wireless node may output a configuration of a plurality of reference signals (RSs) based on a set of sensing measurement conditions. The sensing measurement conditions may include one or more of a range resolution, a maximum range, a velocity resolution, a maximum velocity, a velocity range, an angle of arrival (AoA) measurement, an angle of departure (AoD) measurement, or a multiple-input multiple-output (MIMO) sensing occasion for radar sensing. A second wireless node may obtain the configuration of the plurality of RSs. The first wireless node may transmit the plurality of RSs for the radar sensing based on the configuration. The second wireless node may receive the plurality of RSs for the radar sensing based on the configuration. The second wireless node may perform the radar sensing based on the received plurality of RSs.

Reference signal aggregation for radio frequency sensing

Techniques are provided for utilizing time reversed reference signals for radio frequency (RF) sensing operations. An example method for performing radio frequency sensing operations includes transmitting a radio frequency reference signal, receiving channel information associated with the radio frequency reference signal, generating a time reversed radio frequency sensing signal based at least in part on the channel information, and transmitting the time reversed radio frequency sensing signal.

Time reversal for radio frequency sensing

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a wireless communication device may obtain, at an access stratum (AS) layer, an indication of an inter-satellite link (ISL) activation that is to take place at an activation time. The wireless communication device may receive communications. The wireless communication device may buffer the communications in a buffer at the AS layer. The wireless communication device may release the communications from the buffer to an upper protocol layer at a rate of release that is to change between a transition start time and the activation time. Numerous other aspects are described.

Buffer release for inter-satellite link transition

Certain aspects of the present disclosure provide techniques for adaptive grouping for cooperative radar sensing. A method for wireless communications by a first network entity includes receiving, from a second network entity, first grouping information comprising an indication of a first plurality of network entities, the first grouping information associated with a first time-period; receiving, from the second network entity, second grouping information comprising an indication of a second plurality of network entities, the second grouping information associated with a second time-period; receiving a first radar signal during the first time-period; receiving a second radar signal during the second time-period; transmitting, to the second network entity, first sensing information based on the first radar signal; and transmitting, to the second network entity, second sensing information based on the second radar signal.

Adaptive grouping for cooperative radar sensing

Disclosed are various techniques for wireless communication. In an aspect, a user equipment (UE) identifies a set of positioning sources, each positioning source comprising a positioning reference signal (PRS) resource, a PRS resource set, a PRS frequency layer, and/or a transmission/reception point (TRP). From the set of positioning sources, the UE identifies a consistency group comprising a collection of positioning sources grouped based on expected values of at least one metric of a reference signal from each positioning source, measured values of the at least one metric for the reference signal from each positioning source, and an error threshold. The UE identifies one or more subsets of positioning sources within the consistency group, each subset having at least one metric error value. The UE reports, to a network entity, information about the consistency group and information about at least one of the subsets of positioning sources within the consistency group.

Prioritization of positioning-related reports in uplink

Techniques for detecting non-line-of-sight (NLOS) wireless signal paths are described. In some embodiments, a method thereof may include receiving positioning information from one or more networked devices, the positioning information comprising information indicative of measurements of one or more wireless signals transmitted between one or more wireless network nodes and one or more UEs, location data indicative of a location of each of the one or more UEs, or a combination thereof; determining a commonality associated with the received positioning information; and based on the determined commonality, determining that the NLOS wireless signal path is present between the given UE and the one or more wireless network nodes.

Detecting non-line-of-sight wireless signal paths

Growing community of inventors

San Diego, CA, United States of America

Weimin Duan