US Patent No. 10,397,897

METHODS FOR IMPROVING PAGING TYPE2 PERFORMANCE IN DUAL SIM DUAL STANDBY (DSDS) DEVICES AND APPARATUS THEREFOR


Patent No. 10,397,897
Issue Date August 27, 2019
Title Methods For Improving Paging Type2 Performance In Dual Sim Dual Standby (dsds) Devices And Apparatus Therefor
Inventorship Mohanraja Balasubramaniam, Bangalore (IN)
Varun Vanama, Bangalore (IN)
Arun Raj Rajendran, Bangalore (IN)
Kirti Keshav, Bangalore (IN)
Assignee Samsung Electronics Co., Ltd., Gyeonggi-do (KR)

Claim of US Patent No. 10,397,897

1. A method performed by a Dual Sim Dual Standby (DSDS) device, comprising;recovering a radio frequency (RF) resource by a first Subscriber Identity Module (SIM) after RF tune away to a second SIM;
detecting a missed Packet Data Unit (PDU) Sequence Number (SN) after the recovering the RF resource;
transmitting a status PDU to a network in response to the detecting the missed PDU SN; and
performing a paging delay mitigation process in response to detecting the missed PDU SN,
wherein the performing the paging delay mitigation process includes,
initiating a first timer, having a first duration, in response to the transmitting the status PDU; and
determining whether the missing PDU SN has been received during the first duration after the initiating the first timer,
blocking RF tune away to the second SIM in response to the determining that the missing PDU SN has not been received during the first duration; and
initiating a second timer, having a second duration, in response to the blocking RF tune away.