Qualcomm Incorporated

Vasanthan Raghavan

Junyi Li

Tao Luo

Juergen Cezanne

Jung Ho Ryu

Mohammad Ali Tassoudji

Tianyang Bai

Sundar Subramanian

Sony Akkarakaran

Ashwin Sampath

Kobi Ravid

Kapil Gulati

Raghu Narayan Challa

Muhammad Nazmul Islam

Bilal Sadiq

Ozge Koymen

Yu-Chin Ou

Xiaoxia Zhang

Navid Abedini

Arumugam Chendamarai Kannan

Jianghong Luo

Assaf Touboul

Kiran Venugopal

Srinivas Yerramalli

Marco Papaleo

Hua Wang

Shrenik Patel

Alexander Dorosenco

Robert Keith Douglas

Wooseok Nam

Mihir Vijay Laghate

Andrzej F Partyka

Naga Bhushan

Alexandros Manolakos

Joseph Binamira Soriaga

Danlu Zhang

Joseph Patrick Burke

Pavan Kumar Vitthaladevuni

Ruhua He

Kang Yang

Alexei Yurievitch Gorokhov

Sumeeth Nagaraja

Valentin Alexandru Gheorghiu

Jeremy Darren Dunworth

Allen Minh-Triet Tran

Alessio Marcone

Miguel Rodrigo Castellanos Llorca

Sinan Adibelli

Peter S Gaal

Jing X Sun

Yan Zhou

Karl Georg Hampel

Vinay Chande

Farhad Meshkati

Jun Zhu

Udara Fernando

Giovanni Chisci

Sang-June Park

Mingming Cai

Revathi Sundara Raghavan

Sudarsan Krishnan

Qijia Liu

Siddharth Kamath

Michael Burke

Mohammed Hirzallah

Daoud Abdelhafiz Burghal

Abhilash Bangalore Ravi

Guillaume Lebrun

Krishna Kiran Mukkavilli

Iyab Issam Sakhnini

Qian Zhang

Gideon Shlomo Kutz

Brian Clarke Banister

Yongle Wu

Ling Ding

Robert P Gilmore

Sungwoo Park

Rajagopalan Rangarajan

Mohammed Ali Mohammed Hirzallah

Awlok Singh Josan

Kang Gao

Wenjun Li

Ting Kong

Neil Burns

Dai Lu

Clinton James Wilber

Mustafa Emara

Yuan Gao

Damin Cao

Benjamin Cheadle

Kristi Lee Winter

Methods, systems, and devices for wireless communications are described. A first device may transmit, to a second device, an indication of a sequence of beam training phases that are to be used in a requested beam training procedure between the first device and the second device. The sequence of beam training phases may be selected based on interference measurements performed by the first device, various user exposure metrics, device mobility, power consumption, among other metrics. The second device may receive the indication from the first device, and may transmit a response message to the first device that acknowledges the sequence of beam training phases for the requested beam training procedure. Both the first device and the second device may perform the requested beam training procedure by communicating information via one or more communication beams, which may include performing the sequence of beam training phases indicated by the first device.

Bi-directional beam refinement coordination for wireless systems

Techniques for wireless communication are described. A device may generate a channel covariance matrix using a quantity of beams that is less than a quantity of elements of the channel covariance matrix. The device may utilize a scheme for selecting a subset of beams for generating the channel covariance matrix. The device may generate one or more diagonal elements of the channel covariance matrix based on measurements of a first number of beams of the subset. The device may generate other elements of the channel covariance matrix based on measurements of a second number of beams of the subset. The device may also approximate one or more remaining elements of the channel covariance matrix based on the generated elements. The device may determine a set of beams for selecting the subset of beams, and may communicate beamformed signaling via a beam that is based on the generated channel covariance matrix.

Techniques for speedy determination of adaptive beam weights

Methods, systems, and devices for wireless communications are described, including detection of whether a first wireless device is location within a near-field distance of a second wireless device. The first wireless device measures phases of reference signals received at first antenna array of the first antenna array from a second antenna array of the second wireless device. The first wireless device determines, based on the phases, the values of quadratic terms associated with an equation for calculating the distance between a first antenna of the first antenna array and the center of the first antenna array or for calculating the distance between a second antenna of the second antenna array and the center of the second antenna array. The first wireless device determines, based on the quadratic terms, whether the first wireless device is within the near-field distance of the second wireless device.

Detection of near-field location for wireless communications

Methods, systems, and devices for wireless communications are described. A user equipment (UE) may transmit an indication of a recommendation (e.g., a preference) between a set of periodic channel state information reference signals (P-CSI-RS) and a set of aperiodic channel state information reference signals (AP-CSI-RS). For example, the recommendation may be based on conditions at the UE or capabilities of the UE. Based on the indication of the recommendation the UE may receive, from a network entity, control signaling granting the set of AP-CSI-RS or configuring the set of P-CSI-RS. Based on the control signaling and the granted or configured set, the UE may monitor for, and the network entity may transmit, the set of AP-CSI-RS or the set of P-CSI-RS.

Techniques for signaling periodic and aperiodic channel state information reference signal (CSI-RS) configuration preference

Wireless communications systems, apparatuses, and methods are provided. A method of wireless communication performed by a user equipment (UE) includes receiving, from a wireless communication device located at a first distance from the UE, a plurality of reference signals associated with determining a set of phase values corresponding to antenna elements of an antenna array for reception operations, determining a first set of calibration adjustment coefficients associated with the set of phase values, and transmitting, to a network unit located at a second distance from the UE, a communication signal with phase values based on a second set of calibration adjustment coefficients, wherein the second set of calibration adjustment coefficients are based on the first set of calibration adjustment coefficients and a distance adjustment factor based on the first and second distances of the wireless communication device and the network unit from the UE, respectively.

Near-field measurements for far-field calibration of antenna arrays

This disclosure provides systems, methods, and devices for wireless communication that support use of minimum effective isotropic radiated power (EIRP) constraints with lower precision phase shifters and/or amplitude control. In a first aspect, a method of wireless communication includes obtaining one or more system performance parameters from a serving network entity, wherein the one or more system performance parameters includes a minimum EIRP for uplink transmissions, calculating an estimated EIRP for one or more candidate uplink transmission configurations of the UE, selecting an uplink transmission configuration of the one or more candidate uplink transmission configuration in response to the estimated EIRP corresponding to the uplink transmission configuration meeting the minimum EIRP, and sending the uplink transmissions according to the uplink transmission configuration. Other aspects and features are also claimed and described.

Methods for use of minimum effective isotropic radiated power constraints with low-precision phase shifters and/or amplitude control

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, to a network entity, information indicating a carrier, in a physical uplink control channel group, that is a preferred primary carrier for the UE for uplink control communications with the network entity. The UE may communicate based at least in part on the information. Numerous other aspects are described.

Indication of a preferred carrier in a physical uplink control channel group

Certain aspects of the present disclosure provide a method for wireless communications at a user equipment (UE). The UE transmits capability information corresponding to one or more antenna modules of the UE to a network entity. The capability information may include a quantity of boresight directions associated with each antenna module of the one or more antenna modules. The UE may receive from the network entity, after the capability information is transmitted, an indication of a beam switch and/or an antenna module switch. The beam switch indicates a switch from an active beam to a target beam. The antenna module switch indicates a switch from an active antenna module to a target antenna module.

Switching across antenna modules with independent boresight directions

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a rank information change signal associated with rules for switching between a two-layer (2L) mode and a four-layer (4L) mode via an antenna panel displacement operation. The UE may transmit a transition time parameter associated with an amount of time for transitioning between the 2L mode and the 4L mode. Numerous other aspects are described.

Antenna panel displacement

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may receive a beam based at least in part on using at least a first antenna panel. The UE may transmit a rank indicator and UE assistance information (UAI), the UAI comprising a self-interference metric associated with operating in a full duplex mode based at least in part on using the at least first antenna panel. Numerous other aspects are described.

Self-interference feedback for multiple antenna panels

Methods, systems, and devices for wireless communications are described. A first wireless device may receive, from a second wireless device, a carrier aggregation configuration including two millimeter wave frequency bands for communications. The first wireless device may determine a beam correlation parameter based on the carrier aggregation configuration. The first wireless device may determine beams, based on the beam correlation parameter, in the two frequency bands. The first wireless device and the second wireless device may communicate in carrier aggregation using a beam on a first frequency band and a second beam on a second frequency band.

Signaling of beam correlation across millimeter wave frequency bands

Methods, systems, and devices for wireless communications are described in which a first wireless device, such as a user equipment (UE), may select a set of different groups of antenna elements that are preferred for use in millimeter wave communications at the first wireless device. The first wireless device may provide one or more parameters to a second wireless device that indicates a number of antenna elements of one or more of the groups of antenna elements that is used to determine one or more transmission control parameters. The second wireless device may determine one or more transmission control parameters based on the indicated parameters and number of antenna elements, which may be used for communications with the first wireless device.

Antenna group-specific parameter configuration in millimeter wave communications

Wireless communications systems, apparatuses, and methods are provided. A method of wireless communication performed by a user equipment (UE) includes transmitting, to a network unit, a plurality of reference signals, wherein the plurality of reference signals is associated with a first set of phase and gain values to be used with a first antenna array at the UE for uplink transmissions, receiving, from the network unit, signals used to determine calibration coefficients associated with the first set of phase and gain values for the first antenna array, and transmitting, to the network unit, a communication signal based on the calibration coefficients associated with the first set of phase/gain values and calibration coefficients associated with a second set of phase/gain values, wherein the calibration coefficients associated with the second set of phase/gain values are interpolated from the calibration coefficients associated with the first set of phase/gain values.

Joint phase and gain calibration for millimeter wave beamforming

Methods, systems, and devices for wireless communications are described. In some systems, a user equipment (UE) may detect a material proximate to the UE and may determine one or more properties of the material which may affect beamformed communications. The UE may transmit (e.g., based on the detected material) an indication of a switch from a codebook-based hybrid beamforming procedure to an adaptive beam weight-based hybrid beamforming procedure. The UE may receive, from a network entity, one or more reference signals to use for adaptive beam weight selection in response to the indication of the switch to the adaptive beam weight-based hybrid beamforming procedure. The UE may communicate, with the network entity, in accordance with one or more beam weights selected based on the adaptive beam weight-based hybrid beamforming procedure and the one or more reference signals.

Switching to an adaptive beam weight-based hybrid beamforming procedure

Disclosed are techniques for wireless communication. In an aspect, a user equipment (UE) determines that a perception-based approach to adaptive beam weight learning would provide improved performance of wireless communication with a base station over a wireless communication medium relative to non-perception-based approaches to adaptive beam weight learning, and transmits, to a network node, an indication for the base station to perform perception-based adaptive beam weight learning procedures for the wireless communication with the base station over the wireless communication medium.

Signaling for bidirectional perception-assistance

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West Windsor Township, NJ, United States of America

Vasanthan Raghavan