公开(公告)号：US10681093B2

公开(公告)日：2020-06-09

申请号：US16707170

申请日：2019-12-09

Applicant: MEDIATEK INC.

Inventor： Chih-Yuan Tsai ,  Chi-Chen Lee ,  Te-Huang Liu ,  Chin-Han Wang ,  Yu-Tien Yeh

IPC: H04M1/66 ,  H04L29/06 ,  H04W48/04 ,  H04W8/18 ,  H04W76/16 ,  H04W12/02

Abstract: A mobile communication device including a wireless transceiver and a wireless transceiver is provided. The wireless transceiver performs wireless transmission and reception to and from a first service network and a second service network. The controller uses a first subscriber identity card to establish one or more first radio bearers with the first service network via the wireless transceiver, uses a second subscriber identity card to set up an Internet Protocol Security (IPsec) tunnel with an evolved Packet Data Gateway (ePDG) of the second service network via the first radio bearers, and uses the second subscriber identity card to register an IP Multimedia Subsystem (IMS) service with the second service network via the IPsec tunnel.

公开(公告)号：US20170324574A1

公开(公告)日：2017-11-09

申请号：US15584379

申请日：2017-05-02

Applicant: MEDIATEK INC.

Inventor： Chien-Chun Huang-Fu ,  Yu-Tien Yeh ,  Cheng-Hsiao Ko

IPC: H04L12/18 ,  H04W28/02 ,  H04L29/12 ,  H04L12/801

CPC classification number: H04L12/1877 ,  H04L29/12 ,  H04L47/12 ,  H04L47/2475 ,  H04L47/33 ,  H04W28/02 ,  H04W28/0273 ,  H04W28/0284 ,  H04W28/0289 ,  H04W28/12 ,  H04W48/04

Abstract: AT commands are used for controlling Mobile Termination (MT) functions and GSM/UMTS network services from a Terminal Equipment (TE) through Terminal Adaptor (TA). Application specific access control is an application/service specific access control mechanism for the operator to allow/prevent new access attempts from particular, operator-identified applications/services in the UE in idle mode. However, a TE does not always know the applicability of application specific access control. In accordance with one novel aspect, a new AT command interface that can report application specific access control status to the TE is proposed. It reduces wasteful signaling overhead by retries from the TE. Through the new AT command interface, the TE can query application specific access control status. Via unsolicited result code (URC), the MT can detect application specific access control applicability status change and report updated status to the TE.

公开(公告)号：US10567447B2

公开(公告)日：2020-02-18

申请号：US15333029

申请日：2016-10-24

Applicant: MEDIATEK INC.

Inventor： Chih-Yuan Tsai ,  Chi-Chen Lee ,  Te-Huang Liu ,  Chin-Han Wang ,  Yu-Tien Yeh

IPC: H04M1/66 ,  H04L29/06 ,  H04W48/04 ,  H04W12/02 ,  H04W8/18 ,  H04W76/16

Abstract: A mobile communication device including a wireless transceiver and a wireless transceiver is provided. The wireless transceiver performs wireless transmission and reception to and from a first service network and a second service network. The controller uses a first subscriber identity card to establish one or more first radio bearers with the first service network via the wireless transceiver, uses a second subscriber identity card to set up an Internet Protocol Security (IPsec) tunnel with an evolved Packet Data Gateway (ePDG) of the second service network via the first radio bearers, and uses the second subscriber identity card to register an IP Multimedia Subsystem (IMS) service with the second service network via the IPsec tunnel.

公开(公告)号：US10433368B2

公开(公告)日：2019-10-01

申请号：US14944453

申请日：2015-11-18

Applicant: MediaTek Inc.

Inventor： Shih-Hsin Chien ,  Chi-Chen Lee ,  Wen-Jiunn Liu ,  Ching-Yueh Kao ,  Shih-Chieh Liao ,  Yu-Tien Yeh ,  Sian-Jheng Wong ,  Tien-Yi Huang

IPC: H04J3/06 ,  H04W88/06 ,  H04W56/00 ,  H04W76/27 ,  H04W76/15 ,  H04L5/00 ,  H04W24/02 ,  H04W74/08

Abstract: A communications apparatus includes a radio transceiver and a processor. The radio transceiver is configured for transmitting or receiving wireless radio frequency signals to or from a peer device. The processor determines whether re-synchronization in a communication mode with the peer device is required according to a determination rule. When the re-synchronization is required, the processor transmits a message to the peer device via the radio transceiver to trigger a re-synchronization procedure. The processor determines whether the re-synchronization is required in a connected mode.