Qualcomm Incorporated

Gregory Foerster

Shimman Arvind Patel

Inyup Kang

Supratik Bhattacharjee

Hongbo Yan

Christopher Patrick

Tao Li

Joseph Cheung

Prashant Udupa Sripathi

Jian Wei

Pillappakkam Bahukutumbi Srinivas

Bruce R Meagher

Srinivas Varadarajan

Methods and apparatuses relate to sounding reference signal (SRS) transmit antenna selection in wireless communication systems. For example, a user equipment (UE) may select, from a set of antennas, a subset of antennas for SRS transmission based on at least one antenna selection parameter. The UE may further transmit, on an uplink communication channel, the SRS using the subset of antennas to a network entity. In some aspects, the at least one antenna selection parameter may include a reference signal receive power (RSRP) value, a signal-to-noise ratio (SNR) value, a spectrum efficiency value, and/or an SNR value and a channel correlation value.

Sounding reference signal (SRS) transmit antenna selection

A pilot searcher for CDMA and GPS signals. In one aspect, the searcher is operated in conjunction with a sample buffer in a 'real-time' or 'off-line' mode. The writing/reading of samples to/from the buffer may be performed in a TDM manner via a common port, and samples may be decimated and packed prior to storing in the buffer. In another aspect, the overall search for pilots is partitioned into a number of tasks, with each task corresponding to a search over a given sample segment and based on a particular set of parameter values. The tasks may be stored in a queue and performed one at a time based on their order in the queue. Prior to performing a new task, the parameter values for that task is downloaded to a set of configuration registers. The parameters may be ordered and linked such that only new values are downloaded.

Buffer-based GPS and CDMA pilot searcher

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San Diego, CA, United States of America

Gregory Foerster