Qualcomm Incorporated

Francis Ming-Meng Ngai

Reza Shahidi

Daniel Fred Filipovic

Jun Hu

Cheol Hee Park

Rashid Ahmed Akbar Attar

Qingxin Chen

Zhu Ji

Leena Zacharias

Christopher G Lott

Supratik Bhattacharjee

Bhupesh Manoharlal Umatt

Hongbo Yan

Bhaskara Viswanadham Batchu

Donna Ghosh

Chih-Ping Hsu

Michael Kohlmann

Ning He

Huang Lou

Chintan Shirish Shah

Wenjun Li

Brian George

John Forrester

Stanley Tsai

Anshul Pandey

Sridhar Bandaru

Vieri Vanghi

Vansh Pal Singh Makh

Jack Shyh-Hurng Shauh

Ali Taha

Krishna Chaitanya Mukkera

James E Beckman

Parag Mohan Kanade

Steve Andre Beaudin

Rema Vaidyanathan

Eric Y Tsou

Shriram Gurumoorthy

Jing X Sun

Alexei Yurievitch Gorokhov

Aamod Dinkar Khandekar

Heechoon Lee

Kuo-Chun Lee

Raghu Narayan Challa

Arnaud Meylan

Shailesh Maheshwari

Mungal Singh Dhanda

Farhad Meshkati

Ning Zhang

Liangchi Hsu

Sandip HomChaudhuri

Sivaramakrishna Veerepalli

Vikram Bhaskara Yerrabommanahalli

James Simon Cho

Daniel Amerga

Suli Zhao

Thawatt Gopal

Parthasarathy Krishnamoorthy

Arvind Swaminathan

Divaydeep Sikri

Olaf Josef Hirsch

Serguei A Glazko

Lin Lu

Shanshan Wang

Jagadish Nadakuduti

Anand Rajurkar

Patric Heide

Troy Russell Curtiss

Amit Mahajan

Steven C Ciccarelli

Gangadhar Burra

David J Maldonado

Simon James Walke

Mutaz Zuhier Afif Shukair

Tienyow Liu

Shivank Nayak

Dinesh Kumar Devineni

Stefan Freisleben

Alex Kuang-Hsuan Tu

Sasidhar Movva

Akhil Deodhar

Ryan Scott Castro Spring

Sai Kwok

Qin Xue Frantti

Virat Deepak

Vikram Phogat

Wai San Wong

Lan Lan

Christopher A Barrett

Mykola Shevelov

Pulkit Hanswal

Thiagarajan Sivanadyan

Saad Zaidi

William Stancer

Kuang-Hsuan Tu

Pattabiraman Subramanian

Varsha S Rao

Ameya Rajendraprasad Kasbekar

Gadigeppa Malagund

Mihir Pravin Nabar

Sandip Homchaudhuri

Various aspects of the present disclosure generally relate to wireless communication. A user equipment (UE) may configure a first initial set of maximum transmit powers for a first subscriber module. The UE may configure a second initial set of maximum transmit powers for a second subscriber module. The UE may configure a first maximum transmit power associated with a first connection for the first subscriber module. The UE may configure, independently of the configuration of the first maximum transmit power, a second maximum transmit power associated with the second connection. The UE may transmit based at least in part on at least one of the first maximum transmit power or the second maximum transmit power. Numerous other aspects are described.

Techniques for power control for dual subscribers

Aspects relate to wireless communication at a wireless communication device. The wireless communication device may include a transmitter configured to communicate using a first communication protocol, a receiver configured to communicate using a second communication protocol, different from the first communication protocol, a first antenna coupled to the transmitter, a second antenna coupled to the receiver and physically separated from the first antenna by a variable distance. The wireless communication device transmits, via the first antenna, a first transmission within a first frequency range, and receives via the second antenna, a second transmission within a second frequency range that overlaps the first frequency range. To receive the second transmission, the device may perform a radio frequency coexistence mitigation procedure based on the variable distance between the first antenna and the second antenna in response to detection of a concurrency in time between the first transmission and the second transmission.

Adaptive radio frequency coexistence mitigation

A user equipment (UE) may use multiple subscriber identification modules (SIMs) in dual-SIM dual-active (DSDA) communications. The A DSDA UE may support identification of a set of available radio frequency (RF) resources for communications, where the set of available RF resources include multiple RF components (e.g., transmit/receive antennas), RF baseband resources (e.g., processing resources that support processing and decoding of transmissions), or combinations thereof. The set of available resources may be shared between multiple SIMS, and the UE may identify different resource partitions of the set of available resources, with different resource partitions used to provide concurrent communications of both the first SIM and the second SIM based on parameters of each SIM.

Dynamic modem partitioning techniques for multiple subscriber identification modules

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

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may perform, to a first base station and via a first radio frequency (RF) chain associated with a first subscription, a first uplink transmission based at least in part on one or more of an uplink carrier aggregation capability of the UE or an uplink multiple-input multiple-output (MIMO) capability of the UE. The UE may perform, to the first base station or to a second base station, and via a second RF chain associated with a second subscription and configured to operate simultaneously with the first RF chain, a second uplink transmission based at least in part on one or more of the uplink carrier aggregation capability of the UE or the uplink MIMO capability of the UE. Numerous other aspects are described.

Simultaneous uplink transmissions associated with multiple subscriptions

Certain aspects of the disclosure related to communications apparatus provides isolation between wireless protocols when operating currently while incurring the additional insertion loss based on providing the isolation only when needed. In an aspect, an apparatus include a switched filter coupled to an antenna where the switched filter includes a filter and a bypass line along with switching circuitry configured to selectively establish a bypass signal path including the bypass line or a filtered signal path including the filter. The apparatus further includes a switched filter controller configured to cause the switching circuitry to selectively connect a transceiver unit to the antenna via the bypass signal path or via the filtered signal path based at least on a frequency band of a carrier signal and a bandwidth of the carrier signal.

Apparatus and method for controlling a switchable filter for coexistence between wireless protocols

Methods, systems, and devices for wireless communication are described. A user equipment (UE) may be communicating on a radio frequency spectrum band of a first radio access technology (RAT) using a set of antennas. The UE may reconfigure at least one antenna of the set of antennas to perform a first scan on the radio frequency spectrum band of a second RAT. The UE may determine, based on the first scan, whether to reconfigure a remaining portion of the antennas of the set of antennas to perform a second scan on the radio frequency spectrum band of the second RAT.

Radio frequency spectrum band harmonization

Embodiments described herein relate to systems and methods for scheduling subscriptions in a user equipment (UE) having at least a first receive radio and a second receive radio, including receiving, by the first receive radio, a broadcast activity for a first subscription and receiving, by the second receive radio, a reception activity for a second subscription. A trigger event is detected while the broadcast activity for the first subscription is being received by the first receive radio and the reception activity for the second subscription is being received by the second receive radio. In response to detecting the trigger event, the reception activity for the second subscription is received by the first receive radio and the broadcast activity for the first subscription is received by the second receive radio.

Subscriptions scheduling in multi-subscription devices

Methods and devices are disclosed for implementing opportunistic mobile receive diversity ('OMRD') on a multi-SIM wireless device. The wireless device may receive a request from a protocol stack associated with the first SIM to utilize the second RF resource for receive diversity, and determine whether a protocol stack associated with the second SIM currently has a lower priority than the protocol stack associated with the first SIM. Upon determining that the protocol stack associated with the second SIM currently has a lower priority than the protocol stack associated with the first SIM, the wireless device may grant control of the second RF resource to the protocol stack associated with the first SIM. Granting control may provide, to the protocol stack associated with the first SIM, a capability to enable and disable receive diversity using the first and second RF resources.

Opportunistic mobile receive diversity (OMRD) in a dual-SIM dual-active (DSDA) device

A wireless device includes: a first radio and first transceiver configured to transmit and receive according to a first radio access technology; a second radio and second transceiver configured to transmit and receive according to a second radio access technology; a first antenna and a second antenna connected to the first radio and the second radio; a switch; and a control unit configured to control the switch to configure connections of the first and second antennas to the first and second radios. The control unit is configured to control the switch to disconnect the second radio from the second antenna in response to a receiving, by the second radio through the second antenna, a signal that is below a predetermined threshold, and to connect the second radio to the first antenna during a wakeup period of the second radio.

Single antenna sharing for multiple wireless connections

Various embodiments provide methods implemented in a mobile communication device (e.g., a multi-RAT communication device) for maintaining at least one separate RGS value for each of a plurality of RATs operating on the mobile communication device. Specifically, a device processor on the mobile communication device (e.g., a crystal oscillator manager) may maintain a separate, up-to-date RGS value for each of the plurality of RATs and may associate each of the plurality of RATs with their respective RGS values. By keeping track of the plurality of RATs' respective RGS values, the device processor may ensure that an appropriate RGS value is used to facilitate each RAT's individual operations, such as acquisition/re-acquisition operations, sleep scheduling calculations, and handover/inter-RAT measurement operations. As a result, various embodiments may improve the performance of each RAT and the overall performance of the mobile communication device.

Using client-specific RGS to improve performance on multi-SIM and multi-RAT devices

Various embodiments leverage the typical manner in which a RAT selects a supported frequency band listed in its acquisition database and the standard communications with its network indicating the supported frequency bands to avoid potential coexistence events with one or more other RATs. In particular, various embodiments include methods for avoiding band interference between RATs operating on a multi-SIM communication device by identifying the frequency bands available to each of the RATs, comparing the identified frequency bands to determine whether any RAT's frequency bands will interfere with one or more other RAT's frequency bands, and in response to determining that there is a possibility of frequency band interference, removing those interfering frequency bands from that RAT's acquisition database. As a result, during standard communications, that RAT will report to its network that it supports only non-interfering frequency bands.

Preventing coexistence interference through smart band selection in MSMA devices

An access terminal configured for use in a wireless communication system utilizing discontinuous reception (DRx). To reduce power consumption, a pilot acquisition timeline may be reduced when channel conditions are favorable; and to improve call quality, the pilot acquisition timeline may be increased when channel conditions are poor. Other aspects, embodiments, and features are also claimed and described.

Apparatus and method for dynamic pilot acquisition in a wireless communication system

This disclosure provides systems, methods, and apparatus for mobile transmit diversity. In one aspect, a wireless communication apparatus is provided. The wireless communication apparatus includes a plurality of antennas. The wireless communication apparatus further includes a plurality of transmit circuits, each transmit circuit of the plurality of transmit circuits being configured to transmit according to a different radio access technology. The wireless communication apparatus further includes a controller configured to selectively switch each of the transmit circuits of the plurality of transmit circuits to transmit wireless communications via a corresponding one of the plurality of antennas based on priority levels of data for each of the transmit circuits and a detected operating mode of the wireless communication apparatus.

Systems, apparatus, and methods for antenna selection

Growing community of inventors

Louisville, CO, United States of America

Francis Ming-Meng Ngai