Title:
DUAL-SIM WIRELESS COMMUNICATIONS DEVICE AND METHOD FOR MITIGATING RECEIVER DESENSE IN DUAL-ACTIVE OPERATION
Document Type and Number:
WIPO Patent Application WO/2014/159742
Kind Code:
A3
Abstract:
An access terminal configured to enable communication with two or more wireless communications networks simultaneously. According to some aspects of the disclosure, an access terminal (e.g., dual- SIM access terminal) can be active simultaneously on both networks with reduced interference between transmission and reception. A number of different techniques for mitigating desense on a victim's Rx are illustrated in this disclosure with a GSM aggressor and an EV- DO victim as non-limiting examples. According to an embodiment, modifying a preamble detection process of the second data at the second radio access circuit based on the transmitting time period. According to another embodiment, estimating a percentage of second data to be interfered by the transmission of the first data during the transmitting time period, the second data being to be received using a second radio access circuit of a second RAT, determining an effective signal-to-noise ratio (SNR) based on the estimated percentage and sending a DRC request based on the effective SNR using the second radio access circuit. According to another embodiment, suspending handling of at least one corrupted forward link MAC channel at the second radio access circuit during the transmitting time period. According to another embodiment, storing the second data in a memory, determining a desense value indicative of a degree of desense on the reception of the second data caused by the transmission of the first data, and selectively nulling the second data in the memory based on the desense value.
Inventors:
SUN JING (US)
MAHAJAN AMIT (US)
ATTAR RASHID AHMED AKBAR (US)
HU JUN (US)
LOU HUANG (US)
MAHAJAN AMIT (US)
ATTAR RASHID AHMED AKBAR (US)
HU JUN (US)
LOU HUANG (US)
Application Number:
PCT/US2014/024951
Publication Date:
January 15, 2015
Filing Date:
March 12, 2014
Export Citation:
Assignee:
QUALCOMM INC (US)
International Classes:
H04W88/06; H04B1/00; H04B1/10
Domestic Patent References:
| WO2011113317A1 | 2011-09-22 | |||
| WO2014121305A2 | 2014-08-07 |
Foreign References:
| US20130012135A1 | 2013-01-10 | |||
| US20090023404A1 | 2009-01-22 | |||
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| US20070064835A1 | 2007-03-22 |
Attorney, Agent or Firm:
BURGESS, Jeffrey (LLP305 North Second Avenue #12, Upland CA, US)
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