公开(公告)号：US20200252793A1

公开(公告)日：2020-08-06

申请号：US16435737

申请日：2019-06-10

Applicant: MEDIATEK Inc.

Inventor： Sheng-Kai CHANG ,  Po-Yu LIANG ,  Jen-Chih CHANG

IPC: H04W12/00 ,  H04W88/16 ,  H04W4/06 ,  H04W12/08

Abstract: The invention provides method and associated user equipment for improving versatility of a cellular network in a network system. The network system may have a packet core which may include a security gateway for facilitating an unlicensed network to interwork with the packet core. The method may include: by a user equipment, accessing a multimedia subsystem via the security gateway over the cellular network, instead of the unlicensed network.