Qualcomm Incorporated

Stanley Tsai

Troy Russell Curtiss

Bhaskara Viswanadham Batchu

Francis Ming-Meng Ngai

Gregory Lie

Ammar Kitabi

Vamsee Krishna Somavarapu

Sundararaman Kunchithapatham

Ruhua He

Jun Hu

Ting Kong

Joshua Tennyson MacDonald

Aditya Kailash Bohra

Praveen Kumar Appani

Glenn A Salaman

Chunchung Chan

Kamalakar Ganti

Thiagarajan Sivanadyan

Alexey Semjonovs

Tak Wai Wu

Alvin S Ng

Gaurav Goyal

Vidya Sagar Putta

Ahmed Ali

Bhaskara V Batchu

The disclosure discloses enabling/disabling receive diversity, including determining the UE in a receive diversity enabled state; comparing a first and second receive chain filtered channel chip energy to interference density ratio to an EIthreshold, wherein the first and second receive chain filtered channel chip energy to interference density ratios are based on at least two power measurements obtained in the receive diversity enabled state; comparing a first receive chain measured number of E/Isamples below EILCR_thrshld to a non-receive diversity threshold, wherein the first receive chain measured number of E/Isamples is based on the first receive chain filtered channel chip energy to interference density ratio; and comparing a second receive chain measured number of E/Isamples below EILCR_thrshld to the non-receive diversity threshold, wherein the second receive chain measured number of E/Isamples is based on the second receive chain filtered channel chip energy to interference density ratio.

Detection of fades for receive diversity enablement in a fading channel

Techniques for determining if it is safe for a mobile device to transition directly from a traffic session to a paging mode and for avoiding network re-synchronization procedures in stationary M2M devices are disclosed. It may be safe for direct transition if before-call and in-call network parameters correspond. If safe, the mobile device may transition from the traffic session directly to the paging mode to begin immediately monitoring the paging channel. In stationary M2M devices, paging information is stored before the traffic session and, once the traffic session is complete, the M2M device may be configured to receive paging messaging based on the stored paging information. The M2M device may also store system access information and confirm the validity of the information before returning to the sleep state. The stationary M2M device avoids network re-synchronization procedures. Other aspects, embodiments, and features are also claimed and described.

Method and apparatus for fast TCH to idle transition

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

Methods and apparatuses are presented for piecewise aggregation of overhead messages. According to a method that is presented, that the method can include starting a timer having a time period during which a first radio access technology (RAT) of the UE attempts to obtain overhead messages from a cell. The method can also include obtaining, at a radio resource of the UE and during the time period, a first portion of the overhead messages from the cell. In addition, the method may include determining that the timer has expired and handing over the radio resource to a second RAT of the UE when the timer has expired. The method also may include aggregating the first portion of the overhead messages with a second portion of the overhead messages. Other aspects, embodiments, and features are also claimed and described.

Piecewise aggregation of overhead messaging sets

Methods, devices, and computer program products for antenna searching with antenna selection are disclosed. In one aspect, an apparatus operable in a wireless communication system includes a first receiver, a second receiver, and a processor. The first receiver receives a first signal including pilot signals from a first antenna. The second receiver receives a second signal including pilot signals from a second antenna. The processor, while a receive diversity is enabled, demodulates the first and second signals, determines whether a first condition is satisfied, and, in response to determining that the first condition is satisfied, searches for pilot signals via the second receiver and not the first receiver. The first condition is satisfied when a signal strength of the first signal does not exceed a first threshold and a signal strength of the second signal exceeds a second threshold.

Method and device for antenna searching with antenna selection

Methods and apparatus for selecting one or more suitable antennas for use during power-up/initial acquisition and out of service modes are disclosed. In some examples, initial system acquisition may be performed for a particular receive circuit utilizing a selected one of a first antenna or a second antenna, based on a channel characteristic, such as an automatic gain control (AGC) value corresponding to a received signal energy utilizing either of the antennas. In another example, initial system acquisition utilizing either a receive diversity determination algorithm or an antenna switching determination algorithm may be performed based on a channel characteristic, such as an AGC value corresponding to a received signal energy utilizing one of the antennas coupled to one of the receive circuits.

Devices, methods, and systems for initial signal acquisition

A method and system for correcting timing errors due to thermal changes within a portable computing device are disclosed. The system and method may include calculating an estimate of frequency for a first clock compared to a second clock. The first clock may comprise a crystal oscillator while the second clock comprises a system clock. Next, a sleep state may be calculated for a hardware device, such as radio access technology ('RAT') module, based on the estimate of frequency for the first clock. An error in the frequency of the first clock that may occur during the sleep state of the hardware device may be calculated. Subsequently, a magnitude of time that corresponds to an actual length of the sleep state relative to the second clock may be calculated so that an internal clock of the hardware devices may be synchronized with the second clock.

Method and system for correcting timing errors due to thermal changes within a portable computing device

Growing community of inventors

Frederick, CO, United States of America

Stanley Tsai