Qualcomm Incorporated

Ramesh Chandra Chirala

Sharif Ahsanul Matin

Bhupesh Manoharlal Umatt

Troy Russell Curtiss

Raghu Narayan Challa

Brian Clarke Banister

Lin Lu

Ning He

Wei Zhang

Arvind Vardarajan Santhanam

Reza Shahidi

Farhad Meshkati

Daniel Fred Filipovic

Daniel Amerga

Supratik Bhattacharjee

Jagadish Nadakuduti

Sachin Jain

Yi Su

Michel Evan Chauvin

Carsten Aagaard Pedersen

Tienyow Liu

An-Swol Clement Hu

Hemanth Kumar Rayapati

Akhil Deodhar

Madhup Chandra

Jing Lin

Rami Alnatsheh

Linda Bai

Atin Kumar

Prasanta Samal

Muhammad Khawar R Khan

Helen Jun Xing

Ahmad Bilal Hasan

Sandeep C Ramannavar

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may allocate a first amount of power to one or more radios for a time window based on radio frequency (RF) exposure information and one or more other criteria. The UE may allocate a second amount of power to a selected channel or communication utilized by at least one radio of the one or more radios for one or more time frames within the time window based on the first amount of power allocated to the at least one radio for the time window. The UE may transmit the selected channel or communication based on the first amount of power or the second amount of power. Numerous other aspects are described.

Allocation of transmit power in compliance with RF exposure requirements

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may identify, while camped on a first cell associated with a first radio access technology (RAT), a power management level for a communication using a second RAT, wherein the power management level indicates an available power for the communication using the second RAT, and wherein the available power is based at least in part on an exposure rate or an absorption rate. The UE may delay a transmission of a measurement report on the first cell based at least in part on the identification of the power management level. Numerous other aspects are provided.

Techniques for measurement reporting and transmit power allocation in power-constrained environment

Various aspects of the present disclosure generally relate to wireless communication. In some aspects, a user equipment (UE) may communicate via a first connection using one or more transmit parameters. The UE may determine to suspend subsequent attempts to communicate via a second connection, in a dual connection mode, based at least in part on satisfaction of a threshold number of failed attempts to communicate via the second connection. The UE may determine one or more parameters for suspension of the subsequent attempts to communicate via the second connection based at least in part on a determination that satisfaction of the threshold number of failed attempts is associated with one or more exposure conditions that are based at least in part on the one or more transmit parameters. Numerous other aspects are provided.

Techniques for exposure-based suspensions of communication attempts

The disclosure provides for reporting a channel quality indicator (CQI) in wireless communications. A user equipment (UE) may determine that a calculated CQI value to be reported in a current sub-frame is affected by a deterministic null scheduling on a downlink channel. The UE may determine a compensatory CQI value. The UE may report the lesser of the calculated CQI value and the compensatory CQI value in response to determining that the calculated CQI value is affected by the deterministic null scheduling. In an aspect, the deterministic null scheduling is associated with a compressed mode gap. The UE may determine whether the calculated CQI value is affected by the deterministic null scheduling by determining whether the current sub-frame is within a first time period before the start of the compressed mode gap or within a second time period after the end of the compressed mode gap.

Channel quality reporting for deterministic null scheduling

Methods and devices for improving performance on a wireless communication device having at least a first subscriber identity module (SIM) and a radio frequency (RF) resource may include detecting, on a modem stack associated with the first SIM, an active communication in a first network that supports high speed downlink packet access (HSDPA). During the active communication in the first network, the wireless communication device may detect a signal disruption period, and determine whether an operational downlink mode for the modem stack associated with the first SIM does not match a corresponding downlink mode represented in the first network. Upon determining that the operational downlink mode for the modem stack associated with the first SIM does not match the corresponding downlink mode represented in the first network, the wireless communication device may trigger an internal instruction to transition to a new downlink mode.

System and methods for avoiding call performance degradation due to missed downlink control signal in a wireless communication device

This disclosure provides systems, methods, and apparatus for an initial network acquisition process via multiple antennas. In one aspect a method of establishing communications via a wireless network at a wireless communications apparatus is provided. The method includes attempting an initial acquisition process, over one or more frequencies, for establishing communications over the wireless network via a transmit circuit and a receive circuit transmitting and receiving via a first antenna. The method further includes switching the transmit circuit and the receive circuit from transmitting and receiving via the first antenna to a second antenna in response to detecting failure of the initial acquisition process. The switching is independent of a performance metric of the first or the second antenna. The method further includes re-attempting the initial acquisition process based on the switching to the second antenna over the one or more frequencies.

Systems, apparatus, and methods for antenna switching approach for initial acquisition procedure

Apparatus and methods of receive diversity (RxD) full cell search by a user equipment (UE) in a wireless communication system are described. In an aspect, a first set of received energies of a first signal received at a first antenna and a second set of received energies of a second signal received at a second antenna may be separately determined. Based thereon, a set of peak energies and corresponding antenna indices, along with a slot timing of at least one cell corresponding to the set of peak energies and corresponding antenna indices, may be determined. A frame timing and a scrambling code for the at least one cell then may be determined using a respective one of the first antenna and the second antenna corresponding to each of the set of peak energies and the corresponding antenna indices, along with the respective slot timing of the at least one cell.

Apparatus and methods of receive diversity (RXD) full cell search

Aspects of the methods and apparatus relate to improving the overall decision quality of the Fractional-Dedicated Physical Channel (F-DPCH) channel. One aspect of the methods and apparatus relates to detecting bad channel conditions of a serving base station and improving the serving base station F-DPCH decoding performance in such bad conditions based on the serving base station signal-to interference ratio (SIR) estimation. Another aspect of the methods and apparatus relate to improving the overall decision quality of the F-DPCH channel in soft handover (HO) scenarios by increasing the non-serving base station F-DPCH channel rejections thresholds based on certain SIR estimations. The F-DPCH channel rejections thresholds are based on either the SIR of the non-serving base station, or a difference between non-serving base station SIR and serving base station SIR.

Apparatus and method of improving the overall decision quality of the F-DPCH channel

An apparatus and method for maintaining information during neighbor list updates comprising acquiring information of a first plurality of GSM neighbor cells; recording and keeping the information for a time period T; receiving a second plurality of GSM neighbor cells; comparing the second plurality of GSM neighbor cells with the first plurality of GSM cells in the record; if a GSM neighbor cell from the second plurality of GSM neighbor cells is not in the record, gathering information pertaining to the GSM neighbor cell; and if at least one GSM neighbor cell from the second plurality of GSM neighbor cells is in the record, determining if the age of the information pertaining to the at least one GSM neighbor cell is less than the time period T and if less than T, locating the at least one GSM neighbor cell.

Method and apparatus for neighbor list updates

Growing community of inventors

San Diego, CA, United States of America

Ramesh Chandra Chirala