Qualcomm Incorporated

University of Missouri

National Science Foundation

Weimin Duan

Alexandros Manolakos

Krishna Kiran Mukkavilli

Huilin Xu

Muhammad Sayed Khairy Abdelghaffar

Qiang Wu

Wanshi Chen

Jun Ma

Karthik Anantha Swamy

Lianghai Ji

Seyong Park

Mehmet Izzet Gurelli

Tingfang Ji

Hyojin Lee

Liangping Ma

Jay Kumar Sundararajan

Naga Bhushan

Sony Akkarakaran

Pavan Kumar Vitthaladevuni

Mohamad Sayed Hassan

June Namgoong

Hung Dinh Ly

Jingchao Bao

Runxin Wang

Jing Lei

Hwan Joon Kwon

Gokul Sridharan

Seyedkianoush Hosseini

Taesang Yoo

Yu Zhang

Joseph Binamira Soriaga

Renqiu Wang

Tao Luo

Juan Montojo

Yi Huang

Peter Pui Lok Ang

Guttorm Ringstad Opshaug

Fei Huang

Chengshan Xiao

Yahong Rosa Zheng

Peter S Gaal

Jing Jiang

Wei Jennifer Yang

Linhai He

Sven Fischer

Danlu Zhang

Xiaoxin Zhang

Bo Chen

Changhwan Park

Yan Wang

Yuwei Ren

Ruifeng Ma

Bala Ramasamy

Charles Edward Wheatley

Alexander Dorosenco

Yuxiang Peng

Venkatraman Rajagopalan

Sooryanarayanan Gopalakrishnan

Onur Senel

Nitzan OFer

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

A UE includes a processor configured to: receive, in a primary cell, a dormant indication of a dormant state of a secondary cell; and respond to receiving the dormant indication by implementing the dormant state of the secondary cell by inhibiting monitoring of a physical downlink control channel of the secondary cell; where the processor is configured to respond to a positioning signal including a first portion that is configured within a bandwidth of the secondary cell and that is received while the secondary cell is in the dormant state by: withholding processing of the positioning signal; or withholding processing of the first portion of the positioning signal and processing a second portion, if any, of the positioning signal that is configured outside the bandwidth of the secondary cell; or processing the positioning signal.

Dormant secondary cell positioning signaling

Downlink and uplink Time Difference of Arrival (TDOA) is performed using Reference Signal Time Difference (RSTD) measurements. The transmissions and measurements of positioning reference signals (PRS) are configured to mitigate or eliminate network synchronization errors which conventionally limit positioning accuracy of TDOA. The synchronization errors are mitigated using inter-base station PRS, and transmission of the PRS in response to receipt of the initial reference signal. For DL TDOA, a reference base station may transmit PRS to the user equipment (UE) and neighboring base station. In response, the neighboring base station transmits PRS to the UE. The RSTD may be determined as the difference in the time of reception of the PRS signals received at the UE after removal of the total delay for transmitting the PRS by the neighboring base station, including propagation time and processing time. The RSTD for UL TDOA may be determined in a similar manner.

Enhanced time difference of arrival based positioning for user equipment

Methods, systems, and devices for wireless communication are described. First representations of a first symbol of a space-frequency block coded symbol pair using first resources of a set of resources and first representations of a second symbol of the space-frequency block coded symbol pair using second resources of the set of resources may be transmitted via a first beam. The set of resources may be a set of time and frequency resources. Second representations of the first symbol using the second resources and second representations of the second symbol using the first resources of the plurality of resources may be transmitted via a second beam. In some examples, across the set of resources, the first beam, and the second beam, each representation of the first symbol and each representation of the second symbol is precoded by a different respective precoder of a set of precoders.

High-granularity precoder cycling with channel estimation

Techniques for positioning a bandwidth-limited user equipment (UE) are provided. An example method of positioning performed by a bandwidth-limited UE according to the disclosure includes receiving a first timing measurement signal from at least one proximate UE, wherein the at least one proximate UE is capable of using more bandwidth than the bandwidth-limited UE, and transmitting a second timing measurement signal to the at least one proximate user equipment.

User equipment aided NR-light user equipment positioning with round trip time procedures

Methods, systems, and devices for wireless communication are described. A user equipment (UE) may identify a time period during which the UE is configured to receive grants scheduling communications for the UE, wherein the grants are associated with a first grant format type. The UE may determine that the grants include a feedback process identifier exceeding a threshold value. The UE may maintain a power saving state of a discontinuous reception procedure for a feedback process associated with the feedback process identifier during the time period based at least in part on the feedback process identifier exceeding the threshold value.

Discontinuous reception for configured grant/semi-persistent scheduling

Techniques for reconfigurable intelligent surface (RIS)-assisted calibration for timing errors in wireless nodes may comprise obtaining a set of wireless reference signal measurements comprising: first, second, third, and fourth measurements of reference signals traveling between the mobile device, a first wireless node, and a second wireless node, wherein a portion of the reference signals are reflected by the RIS while traveling between the mobile device and the first or second wireless node. A differential value comprising a difference between the third measurement and the fourth measurement is also obtained. Determining a position estimate of the mobile device may then be performed, based at least in part on the set of wireless reference signal measurements, the differential value, and a respective location of each of the first wireless node, the second wireless node, and the RIS.

Reconfigurable intelligent surface (RIS)-assisted timing error calibration for mobile device positioning

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Weimin Duan