Qualcomm Incorporated

Sridhar Bandaru

Thawatt Gopal

Reza Shahidi

Brian Clarke Banister

Qingxin Chen

Scott Hoover

Vishal Mahajan

Michael Lee McCloud

Lin Lu

Cheol Hee Park

Jagadish Nadakuduti

Troy Russell Curtiss

Sasidhar Movva

Hemanth Kumar Rayapati

Akhil Deodhar

Shriram Gurumoorthy

Defang Chen

Kuo-Chun Lee

Arnaud Meylan

Arvind Vardarajan Santhanam

Liangchi Hsu

Leena Zacharias

Daniel Fred Filipovic

Dominic Gerard Farmer

Bhupesh Manoharlal Umatt

Vishal Agarwal

Bhaskara Viswanadham Batchu

Amit Mahajan

Chih-Ping Hsu

Francis M Ngai

Francis Ming-Meng Ngai

Sachin Jain

David J Maldonado

Ronald Alton

Krishna Chaitanya Mukkera

Sivaram Srivenkata Palakodety

Mona Agrawal

Brian George

Udayan Murli Bhawnani

Joshua Tennyson MacDonald

Zhibin Dang

Amy Derbyshire

Lan Lan

Ambarish Tripathi

James Beckman

Sandeep Rao

Yu Fu

Christopher A Barrett

Ashwin Madhur Comandur

Sandeep Ramannavar

Sunil Kc

Mihir Pravin Nabar

Vikram Ramesh Babu

Ashish V Gaonekar

Sunil K C

Joseph David Paulino

Bhupesh Manoharial Umatt

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may initiate a first service, having a first priority during a time interval, associated with a first subscriber identification module (SIM), and a second service, having a second priority during the time interval, associated with a second SIM of the UE, the first priority having a higher priority than the second priority. The UE may identify a first type of communication associated with the second SIM. The UE may adjust, based at least in part on the first type of communication, at least one of the first priority or the second priority during the time interval. The UE may perform a communication in accordance with the adjusted at least one of the first priority or the second priority. Numerous other aspects are described.

Techniques for dual active subscriber transmit sharing

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

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

Aspects described herein relate to communicating with multiple cells based on two separate subscriptions stored at the UE in a dual subscription dual standby (DSDS) mode, switching to communicate with the multiple cells in a dual subscription dual active (DSDA) mode, transmitting, to at least one of the multiple cells and based on a number of component carriers allowed for a subscription being exceeded by switching to communicate in the DSDA mode, assistance information to indicate a threshold amount of component carriers for the UE, and transmitting, to at least one of the multiple cells and based on the number of component carriers allowed for the subscription being exceeded by switching to communicate in the DSDA mode, a channel quality indicator (CQI) value for one or more cells of the multiple cells to request deactivation of one or more component carriers with, or release of, the one or more cells.

Techniques for modifying component carrier or layer configuration in multi-subscription wireless communications

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 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

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

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

Methods, systems, and devices for wireless communication are described. A multi-antenna user equipment (UE) may communicate with a base station using a first antenna, determine to switch from the first antenna to a second antenna for communicating with the base station, determine a silence window in which communication with the base station is suspended, schedule the switch from the first antenna to the second antenna to occur during the silence window, and switch from the first antenna to the second antenna during the silence window.

Antenna switch scheduling

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may communicate on a primary carrier using a first antenna port. The UE may communicate on a secondary carrier using a second antenna port. The UE may determine whether to switch the secondary carrier from the second antenna port to the first antenna port based on a channel condition associated with the second antenna port. The UE may switch the secondary carrier from the second antenna port to the first antenna port based on a determination to switch the secondary carrier from the second antenna port to the first antenna port. Numerous other aspects are provided.

Techniques for uplink performance optimization in dual carrier operation

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may transmit, on a first subscriber identity module (SIM) operating in a connected mode, a signal using a first antenna associated with a first antenna module. The UE may configure, for a second SIM operating in an idle mode, a second antenna associated with the first antenna module for receive operations. The UE may switch a transmit antenna associated with the first SIM from the first antenna to a third antenna associated with a second antenna module based at least in part on configuring the second antenna for receive operations and based at least in part on the first antenna module being unable to support concurrent transmission and reception of signals. The UE may transmit, on the first SIM, a signal using the third antenna. Numerous other aspects are described.

Antenna switching for a multiple subscriber identity module user equipment

A method, a computer-readable medium, and an apparatus are provided for wireless communication at a user equipment (UE). The apparatus determines that a first subscriber identity module (SIM) and a second SIM of the UE share a cross switch and determines whether to modify concurrent operation of the first SIM or the second SIM based, at least in part, on a determination that the first SIM and the second SIM of the UE share the cross-switch. The concurrent operation of the first SIM and the second SIM may include the first SIM performing SRS antenna switching and the second SIM performing an idle mode activity.

Managing MSIM concurrent activities

Growing community of inventors

Westminster, CO, United States of America

Sridhar Bandaru