公开(公告)号：US20200112593A1

公开(公告)日：2020-04-09

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: 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：US20170118255A1

公开(公告)日：2017-04-27

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: H04L29/06 ,  H04W12/02 ,  H04W48/04 ,  H04W76/02 ,  H04W68/00

CPC classification number: H04L65/1073 ,  H04L63/0272 ,  H04L63/164 ,  H04L65/1016 ,  H04L65/1069 ,  H04W8/183 ,  H04W12/02 ,  H04W48/04 ,  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：US20160142992A1

公开(公告)日：2016-05-19

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: H04W56/00 ,  H04W76/04 ,  H04W74/08 ,  H04W68/00

CPC classification number: H04W88/06 ,  H04L5/0007 ,  H04L5/0098 ,  H04W24/02 ,  H04W56/001 ,  H04W74/0833 ,  H04W76/15 ,  H04W76/27

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.

Abstract translation: 通信装置包括无线电收发机和处理器。 无线电收发器被配置用于向或从对等设备发送或接收无线射频信号。 处理器根据确定规则确定是否需要与对等设备的通信模式中的再同步。 当需要重新同步时，处理器经由无线电收发器向对等设备发送消息以触发重新同步过程。 处理器确定在连接模式下是否需要重新同步。