Qualcomm Incorporated

Leland Stanford Junior University

Alexandros Manolakos

Joseph Binamira Soriaga

Tao Luo

Sony Akkarakaran

Wanshi Chen

Peter S Gaal

Tingfang Ji

Weimin Duan

Krishna Kiran Mukkavilli

Sven Fischer

Guttorm Ringstad Opshaug

Muhammad Sayed Khairy Abdelghaffar

Jing Jiang

Naga Bhushan

Juan Montojo

Jay Kumar Sundararajan

Huilin Xu

Yi Huang

Jingchao Bao

Seyedkianoush Hosseini

June Namgoong

Srinivas Yerramalli

Xiaoxia Zhang

Gokul Sridharan

Seyong Park

Wei Jennifer Yang

Yu Zhang

Gabi Sarkis

Heechoon Lee

Pavan Kumar Vitthaladevuni

Hung Dinh Ly

Jing X Sun

Wooseok Nam

Alberto Rico Alvarino

Bilal Sadiq

Junyi Li

Taesang Yoo

Peter Pui Lok Ang

Yan Zhou

Yang Yang

Mostafa Khoshnevisan

Jing Lei

Ahmed Attia Abotabl

Rajat Prakash

Stephen William Edge

Makesh Pravin John Wilson

Hao Xu

Alexei Yurievitch Gorokhov

Muhammad Nazmul Islam

Juergen Cezanne

Hwan Joon Kwon

Hari Sankar

Xiao Feng Wang

Tianyang Bai

Renqiu Wang

Chenxi Hao

Wei Zeng

Seyed Ali Akbar Fakoorian

Le Liu

Amir Aminzadeh Gohari

Chih-Ping Li

Linhai He

Aamod Dinkar Khandekar

Yeliz Tokgoz

Navid Abedini

Kapil Gulati

Gavin Bernard Horn

Sudhir Kumar Baghel

Vasanthan Raghavan

Shimman Arvind Patel

Ahmed Elshafie

Sumeeth Nagaraja

Gideon Shlomo Kutz

Piyush Gupta

Umesh Phuyal

Chao Wei

Ayan Sengupta

Farhad Meshkati

Chong Li

Joseph Patrick Burke

Haitong Sun

Hong Cheng

John Edward Smee

Thomas J Richardson

Keiichi Kubota

Ran Berliner

Ravi Agarwal

Raghuraman Krishnamoorthi

Jung Ho Ryu

Shay Landis

Shuanshuan Wu

Raghu Narayan Challa

Tien Viet Nguyen

Kiran Venugopal

Siddhartha Mallik

Abdelrahman Mohamed Ahmed Mohamed Ibrahim

Danlu Zhang

Amir Farajidana

Wireless communication techniques leveraging DMRS sharing patterns are disclosed. A method of wireless communication includes receiving, by a user equipment (UE) device, control information. The control information indicates mapping of uplink transmission parameters to one or more demodulation reference signal (DMRS) sharing patterns. The method further includes sending an uplink transmission to a base station in accordance with a DMRS sharing pattern. The DMRS sharing pattern is selected from among the one or more DMRS sharing patterns based on one or more parameters of the uplink transmission. Other aspects and features are also claimed and described.

Demodulation reference signal sharing pattern selection in a wireless communication system

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

Methods, systems, and devices for wireless communications are described. A base station that may include at least two transmission reception points (TRPs) next to a high speed train (HST) may transmit, to a user equipment (UE) on the HST, an indication of a quasi co-location (QCL) relationship indicating a relationship between a plurality of tracking reference signals (TRSs) and a demodulation reference signal (DMRS) of a data channel. The plurality of TRSs may include a first TRS and a second TRS. The UE may receive, from a first TRP, the first TRS associated with an occasion of the data channel, and receive, from a second TRP, the second TRS associated with the occasion of the data channel. The UE may perform, based on the indication of the QCL relationship, a channel estimation procedure for the data channel based on the DMRS, the received first TRS, and the received second TRS.

Quasi co-location type for doppler pre-compensated reference signal

Disclosed are systems, methods, and non-transitory media for providing signaling consideration for wireless positioning with disjoint bandwidth segments. For instance, one or more indications of a preferred bandwidth configuration can be transmitted by a user equipment. Based on the one or more indications, the user equipment can receive a positioning configuration that indicates disjoint bandwidth segments containing a positioning reference signal based on the preferred bandwidth configuration. In response, the user equipment can then determine one or more positioning measurements based on the positioning reference signal in the disjoint bandwidth segments.

Signaling consideration for new radio positioning with disjoint bandwidth segments

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may be configured to receive, from a base station, an indication of a set of resources for transmitting a set of phase-coherent sounding reference signals (SRSs). The UE may receive, from the base station, a control message indicating a cancellation of an allocation of a first portion of the set of resources. The UE may determine a phase coherency configuration associated with a second portion of the set of resources based on receiving the control message indicating the cancellation. The UE may then be configured to transmit one or more SRSs within the second portion of the set of resources in accordance with the determined phase coherency configuration.

Techniques for sounding reference signal phase coherency

A user equipment (UE) may be configured to transmit or receive reference signals in flexible symbols that are indicated as used for full duplex communications. The UE may transmit or receive reference signals over frequency resources of a symbol indicated as a flexible symbol, which may configured for uplink or downlink communications, that is also configured as full duplex, which may include frequency resources for both uplink and downlink communications. The UE may determine whether or how to transmit one or more reference signals in a flexible symbol based on at least one of the bandwidth of the uplink resources or the bandwidth of the downlink resources, the frequency positions of the reference signals, or other criteria. A base station may be configured to similarly transmit or receive reference signals in flexible symbols that are indicated as used for full duplex communications.

UE behavior with reference signals in a full-duplex symbol

Methods, systems, and devices for wireless communications are described. A method for wireless communication may include receiving a single frequency networked composite reference signal (SFNed RS) at a first port of a user equipment (UE) and receiving a reference signal (RS) at a second port of the UE that is different than the first port of the UE. The method may also include performing channel estimation for at least one of the first port or the second port based at least in part on receiving the SFNed RS and the RS. A method for wireless communication may include transmitting a first portion of an SFNed RS from a first port of a first transmit/reception point to a UE and transmitting a downlink control information message to the UE that indicates at least one transmission configuration indicator state identifier that identifies the SFNed RS.

Consideration for demodulation reference signal and tracking reference signal quasi co-location relationship

Aspects of the disclosure relate to the use of enhanced downlink control information to communicate partial frequency sounding configuration to user equipment (UE). A UE may receive a partial frequency sounding configuration generated for the UE the downlink control information, transmit a sounding reference signal (SRS) in one or more resources configured for SRS transmission in a bandwidth used by the UE, the one or more resources being identified by the partial frequency sounding configuration, and refrain from transmitting in a portion of a set of resources configured for SRS transmission in the bandwidth used by the UE. A format for the enhanced downlink control information may be based on standards defined the downlink control information formats.

Group common downlink control information enhancements for partial frequency sounding of multiple UEs

A user equipment (UE) receives scheduling information for Sounding Reference Signal (SRS) for positioning that includes multiple reserved occasions to transmit the SRS. The multiple reserved occasions may be used on all or on only a subset of configured SRS resources. The UE transmits the positioning SRS on a reserved occasion that is first available for transmission, e.g., without collision or other restrictions of transmission of the SRS. The UE does not transmit the positioning SRS on any earlier reserved occasions that is not available or any subsequent reserved occasions. The base station may attempt to decode the SRS on each reserved occasion until the positioning SRS is transmitted. The base station may reassign unused reserved occasions to other UEs or to other channels. The base station may report positioning measurements with associated time stamps for the reserved occasion on which the positioning SRS was received.

Supporting scheduling of sounding reference signals

Certain aspects of the present disclosure provide techniques for selecting an antenna configuration for transmitting in a wireless communication network. An example technique may include determining that a front guard period is not scheduled between a scheduled uplink transmission and a scheduled sounding reference signal (SRS) transmission, and based on the determination, transmitting the scheduled SRS transmission using a first antenna configuration after transmitting the scheduled uplink transmission using the first antenna configuration.

Guard period optimization for multi-antenna user equipments

Aspects described herein relate to transmitting and/or receiving devices securing or authenticating communications at a physical layer based on generated or received path information.

Techniques for path information-based physical layer security

Methods, systems, computer-readable media, and apparatuses for UE positioning are described. In some embodiments, a UE is configured to perform positioning measurements according to capabilities of the UE. Over time, the capabilities may change. Based on a change, the UE reports, to a location server, an indication that the capabilities have changed. This indication can include updated capabilities information or an error related to previously reported capabilities information and/or availability of the updated capabilities information. In turn, the location server may indicate, to the UE, updated assistance data and/or a request for updated location information, such that next position measurements performed by the UE may be based on the updated assistance data and/or the request.

Updating user equipment's positioning capabilities during positioning session

Various aspects of the present disclosure relate to wireless communication. In some aspects, a client may receive an observed environmental vector feedback configuration associated with a reporting procedure for reporting updates corresponding to at least one observed environmental vector that is based at least in part on one or more features associated with an environment of the client, wherein the observed environmental vector comprises input for a first machine learning component that determines client specific parameters for use by a second machine learning component. The client may transmit an update corresponding to the at least one observed environmental vector based at least in part on the observed environmental vector feedback configuration. Numerous other aspects are provided.

Observed environmental vector feedback for wireless communication

Positioning of a UE is supported in a Radio Resource Control (RRC) Inactive state. The UE receives a request for periodic or triggered location and enters the RRC Inactive state. When an event is detected, the UE sends an RRC Resume Request to a gNB that includes an indication of the event. The indication may be an event report that may include downlink positioning measurements. The gNB forwards the event report to a location server, and may later receive and return an event report acknowledgement to the UE in an RRC Release. The indication may instead trigger uplink positioning, with the base station sending an uplink Sounding Reference Signal (SRS) configuration to the UE in an RRC Release, causing the UE to transmit uplink SRS signals to be measured by gNBs. For uplink related position methods like RTT, the gNB can receive both types of indication.

Method and apparatus for location of a user equipment in an inactive state

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

Growing community of inventors

San Diego, CA, United States of America

Alexandros Manolakos