Qualcomm Incorporated

Future Wei Technologies, Inc.

Telefonaktiebolaget Lm Ericsson (Publ)

Thawatt Gopal

Reza Shahidi

Sridhar Bandaru

Qingxin Chen

Brian Clarke Banister

Tom Chin

Arvind Vardarajan Santhanam

Anthony C K Soong

Young Cheul Yoon

Patrick Hosein

Shiau-He Tsai

Vishal Mahajan

Defang Chen

Srinivasan Balasubramanian

Cheol Hee Park

Scott Hoover

Long Duan

Krishna Rao Mandadapu

Shriram Gurumoorthy

Xiaoning Lu

Qi Huang

Kuo-Chun Lee

Rath Vannithamby

Guangming Shi

Tao Wu

Ralph Akram Gholmieh

Bhupesh Manoharlal Umatt

Jun Hu

Lin Lu

David Comstock

Jagadish Nadakuduti

Troy Russell Curtiss

Nitin Pant

Brian George

Akhil Deodhar

Jonas Lennart Wiorek

Robert Shuicheong Chan

Yuanbo Wang

Yu Fu

Viswanath Sankaran

Xiao William Cheng

Yue Hong

Sunil Kc

Christopher James Pais

Harsimransingh Narindersingh Bindra

Billy Andika

Wanshi Chen

Heechoon Lee

Raghu Narayan Challa

Arnaud Meylan

Leena Zacharias

Liangchi Hsu

Muthukumaran Dhanapal

Shyamal Ramachandran

Michael Lee McCloud

Daniel Amerga

Suli Zhao

Supratik Bhattacharjee

Olaf Josef Hirsch

Shanshan Wang

Insung Kang

Francis Ming-Meng Ngai

Sachin Jain

Francesco Gatta

David J Maldonado

Harish Venkatachari

Timothy Paul Pals

Shravan Kumar Raghunathan

Hsien Li Woo

Ahmed Saifuddin

Udayan Murli Bhawnani

Kiran Patil

Hemanth Kumar Rayapati

Joshua Tennyson MacDonald

Sumit Kumar Singh

Touseef Khan

Chao Jin

Rimal Patel

Ketan Humnabadkar

Sunil Suresh Patil

Josephine Ammer Bolotski

Tsai-Chen Huang

Swaminathan Sureshchandran

Srivatsa Venkata Chivukula

Vishal Hingorani

Ping Zhou

Sandeep Rao

Pulkit Hanswal

Shahabuddin Mohammad

Zhengming Li

Seong-Jun Oh

Chhavi Jain

Sandeep Ramannavar

Ta Yan Siu

Heng Zhou

Hailong Wang

Vikram Ramesh Babu

Venkata Potnuru

Praveen Adusumilli

Shivram Ramanathan Lnu

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may perform a fast antenna switched diversity evaluation by obtaining at least two signal measurements for each transmit antenna of the UE based at least in part on detecting one or more triggering conditions for switching one or more transmit antennas of the UE. The UE may switch the one or more transmit antennas based at least in part on the at least two signal measurements for each transmit antenna. Numerous other aspects are described.

Fast antenna switched diversity

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may detect a first communication, associated with a first subscriber identity module (SIM) operating in a connected mode, that is at least partially overlapping in a time domain with a second communication associated with a second SIM operating in an idle mode. The UE may detect that a transmit chain associated with the first SIM and a receive chain associated with the second SIM are sharing an antenna switch. The UE may perform a preventive action based at least in part on the first communication associated with the first SIM overlapping in the time domain with the second communication associated with the second SIM while the transmit chain associated with the first SIM and the receive chain associated with the second SIM are sharing the antenna switch. Numerous other aspects are described.

Techniques for managing power amplifier reliability for multi-SIM antenna switching concurrency

Aspects of the present disclosure relate to wireless communications, and more particularly, to techniques for a UE to determine whether to maintain or remove a radio frequency (RF) path from a set of candidate paths considered for transmit antenna switch diversity (ASDIV). The determination allows the UE to avoid signal loss or degradation in coexisting networks at similar frequency ranges. For example, ASDIV allows two or more antennas to form different input and output ports to establish different RF paths. Coexistent networks, such as wireless wide-area-network (WWAN) and wireless local-area-network (WLAN) may utilize different RF paths to optimize reliability and efficiency. The overlapping of the bands may cause signal attenuation or degradation from at least one of the networks. The present disclosure provides techniques for detecting signal attenuation at least partially caused by overlapping bands and removing an associated RF path to avoid such signal loss or attenuation.

Managing radio frequency (RF) paths for antenna switch diversity (ASDIV) using extractor in network coexistence

The present disclosure relates to methods, devices and software that can be used for preventing damage to RF front end equipment used in wireless communication systems. In some aspects, a user equipment (UE) may establish a first communication having a first priority, wherein the first communication is associated with a first subscriber in a connected mode. The UE may establish a second communication having a second priority, wherein the second communication is associated with a second subscriber in the connected mode. The UE may identify a state of a transmit/receive (TRX) switch shared between the first communication and the second communication. The UE may perform, based at least in part on the state of the TRX switch, at least one of the first communication or the second communication using a TRX switching configuration.

Techniques for protecting radio frequency front-end components

Aspects of the present disclosure provide a method for wireless communications by a user equipment (UE). The method generally includes receiving a measurement configuration, wherein the measurement configuration indicates at least one or more frequency bands, determining, based on one or more parameters, a periodicity for measuring the at least one or more frequency bands, and performing measurements of the at least one or more frequency bands according to the determined periodicity.

Methods and apparatuses for cell measurements

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may obtain one or more parameters associated with a dual subscriber operation of the UE that includes communicating using a first subscriber entity and a second subscriber entity. The UE may transmit one or more uplink communications via one or more of the first subscriber entity or the second subscriber entity using a coexistence management configuration that is based at least in part on the one or more parameters. Numerous other aspects are described.

Dual subscriber coexistence management

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, an apparatus may determine a time-averaged power limit of a set of antennas. The apparatus may modify an antenna switching configuration based at least in part on the time-averaged power limit. The apparatus may transmit a signal using an antenna, from the set of antennas, associated with the modified antenna switching configuration, wherein the antenna is associated with a higher power limit than one or more other antennas. Numerous other aspects are described.

Techniques for antenna switched diversity management

Methods, systems, and devices for wireless communications are described that support subscriber identification module (SIM) prioritization based on service priority and quality of service (QoS) parameters. A user equipment (UE) may identify a set of available RF components for communications at the UE that may be shared between a first SIM and a second SIM. The UE may identify multiple resource partitions of the set of available RF components, each resource partition providing resources for contemporaneous communications of both the first SIM and the second SIM. The UE may select one of the resource partitions for the contemporaneous communications based on service level priorities associated with each SIM and which resource partition provides sufficient RF resources to satisfy the QoS parameters associated a highest service level priority of the multiple SIMS.

Subscriber identification module prioritization techniques based on service priority and quality of service parameters

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may detect a trigger for entering an antenna switched diversity low power mode. The UE may switch from a first antenna switched diversity mode with a first interval between antenna switched diversity measurements to a second antenna switched diversity mode with a second interval between the antenna switched diversity measurements based at least in part on detecting the trigger for entering the antenna switched diversity low power mode. Numerous other aspects are provided.

System and method for antenna switched diversity low power mode

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may establish, using a first frequency band, a first communication connection on a first subscriber identity module (SIM). The UE may establish, using a second frequency band, a second communication connection on a second SIM in a multi-SIM dual receive mode that includes the first SIM and the second SIM having concurrent activity. The UE may switch from a first antenna to a second antenna for the first SIM in accordance with an antenna switching capability that is based at least in part on whether the first communication connection and the second communication connection are time division duplex (TDD) synchronized. The UE may transmit one or more communications associated with the first SIM using the second antenna. Numerous other aspects are described.

Techniques for antenna switching management in a multiple subscriber identity module mode

Apparatus, methods, and computer-readable media for facilitating managing multi-SIM concurrent mode for TDD co-banded or spectrum overlap carriers are disclosed herein. An example method for wireless communication at a user equipment (UE) includes estimating a maximum transmit power for a first subscriber based on a low-noise amplifier (LNA) input power threshold associated with an active receive chain of a second subscriber, where the UE comprises the first subscriber and the second subscriber. The example method also includes transmitting, via an active transmit chain of the first subscriber, an uplink transmission at the first subscriber maximum transmit power based on the first subscriber and the second subscriber operating concurrently, and a transmit power associated with the uplink transmission being greater than the first subscriber maximum transmit power.

Methods and apparatus to facilitate managing multi-sim concurrent mode for co-banded or spectrum overlap carriers

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may establish a first communication link using a first radio access technology (RAT). The UE may establish a second communication link using a second RAT. The UE may determine whether to prioritize antenna selection for the first communication link using the first RAT or the second communication link using the second RAT. The UE may prioritize antenna selection for the first communication link or the second communication link based at least in part on the determination. Numerous other aspects are provided.

Techniques for user equipment antenna prioritization

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a multi-subscriber identity module (SIM) user equipment (UE) may communicate, using a first SIM, on a plurality of component carriers. The multi-SIM UE may select a first subset of component carriers from the plurality of component carriers based at least in part on a component carrier prioritization. The multi-SIM UE may identify an amount of memory available to a second SIM. The multi-SIM UE may tune away, based at least in part on the amount of memory available to the second SIM, from a second subset of component carriers The first subset of component carriers may be different from the second subset of component carriers. Numerous other aspects are described.

Techniques for carrier prioritization in multi-subscriber identity module features

A user equipment (UE) may monitor a channel for wireless communication associated with a first radio access technology (RAT) during one or more of a first active duration or a first inactive duration. The UE may operate in a first power mode during the first inactive duration. The UE may monitor the channel for wireless communication associated with a second RAT during one or more of a second active duration or a second inactive duration. The UE may operate during the second inactive duration in one or more of the first power mode or a second power. The UE may operate according to the first mode or the second mode based on the monitoring of the channel associated with the first RAT and the second RAT.

Techniques for managing a radio transceiver chain for multiple radio access technologies

In a dual network link scenario, a wireless network may provide a user equipment (UE) with a measurement configuration indicating multiple inter-frequency measurement objects during an off duration of a discontinuous reception (DRX) cycle configured on a first network link. The UE may assign the inter-frequency measurement objects to a second network link if the second network link has an always-on configuration. Alternatively, if the second network link has a DRX configuration, the UE may perform some inter-frequency measurement activities on the first network link and assign some inter-frequency measurement objects to unoccupied gap occasions in the off duration for the DRX cycle configured on the second network link. In this way, the UE may save power by spending more time in a low power state, and mobility performance for the UE may be improved by increasing the efficiency and reliability of inter-frequency measurement activities.

Load balancing inter-frequency measurement activities for dual network link scenarios

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San Diego, CA, United States of America

Thawatt Gopal