Varsha Rao

US Patent:

20130170416, Jul 4, 2013

Filed:

Jul 5, 2012

Appl. No.:

13/542288

Inventors:

Ravi Gopalan - San Diego CA, US
Varsha S. Rao - San Diego CA, US

Assignee:

QUALCOMM INCORPORATED - San Diego CA

International Classification:

H04W 52/02
H04W 72/04

US Classification:

370311, 370329

Abstract:

While a user equipment (UE) is in a connected mode, the UE may receive only a limited quantity of data. During this phase, a receive diversity configuration may not be enabled, in an effort to conserve power on the UE side. However, in marginal signal conditions and a poor radio environment, downlink performance at the UE side may be enhanced by enabling receive diversity, irrespective of the limited data received by the UE. However, while receive diversity may improve the signal-to-noise ratio (SNR) at the UE end in marginal signal conditions, the UE may also incur a penalty on power consumption. Therefore, certain aspects of the present disclosure provide techniques for dynamically controlling the receive diversity of a wireless device to improve the downlink procedure performance, while minimizing power consumption due to the usage of a second receive chain when in connected mode.

US Patent:

20150282057, Oct 1, 2015

Filed:

Jun 18, 2014

Appl. No.:

14/307577

Inventors:

- San Diego CA, US
Jun Hu - San Diego CA, US
Huang Lou - San Diego CA, US
Vansh Pal Singh Makh - San Francisco CA, US
Francis Ming-Meng Ngai - Louisville CO, US
Ashish Gaonekar - Boulder CO, US
Varsha Rao - San Diego CA, US
Surekha Muralidharan - San Diego CA, US

International Classification:

H04W 48/18

Abstract:

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.