公开(公告)号：US20180132289A1

公开(公告)日：2018-05-10

申请号：US15345744

申请日：2016-11-08

Applicant: QUALCOMM Incorporated

Inventor： Suli Zhao ,  Yongsheng Shi ,  Qingxin Chen ,  Sivaramakrishna Veerepalli ,  Li-Ping Shen ,  Niranjan Pendharkar ,  Yashdev Singh ,  Reza Shahidi ,  Mona Agrawal ,  Bhupesh Umatt

IPC: H04W76/02 ,  H04W60/00 ,  H04W48/10

CPC classification number: H04W76/16 ,  H04W48/10 ,  H04W60/005 ,  H04W88/06

Abstract: A multi-subscriber identification module (MSIM) wireless communication device may have at least a first SIM and a second SIM associated with a shared radio frequency (RF) resource. The wireless communication device may detect that the first SIM is set as a designated data subscription (DDS), such that a modem stack associated with the first SIM receives information broadcast by a first network. The wireless communication device may perform a network attach procedure with a second network on a modem stack associated with the second SIM, such that a default packet data network (PDN) connection is established with the second network. The wireless communication device may set the default PDN connection as a persistent PDN connection, with the modem stack associated with the second SIM maintaining at least one persistent PDN connection.