公开(公告)号：US20170142645A1

公开(公告)日：2017-05-18

申请号：US15335579

申请日：2016-10-27

Applicant: MEDIATEK INC.

Inventor： Kun-Lin WU ,  Hung-Lin CHANG ,  Chih-Hung LEE ,  Yuh-Hwang YOU ,  Ming LEE ,  Yu-Cheng HUANG

IPC: H04W48/16 ,  H04W48/18

CPC classification number: H04W48/16 ,  H04W48/18

Abstract: A communications apparatus includes a radio transceiver, a memory device and a processor. The radio transceiver transmits or receives wireless radio frequency signals to or from an air interface. The memory device stores a registration database including one or more sets of registration data. Each set of registration data corresponds to an International Mobile Subscriber Identity (IMSI). The processor determines whether performing a PLMN search procedure is required, and when performing a PLMN search procedure is required, the processor retrieves suitable registration data from the registration database according to a currently used IMSI and performs the PLMN search procedure via the radio transceiver based on the retrieved suitable registration data.