公开(公告)号：US20140106751A1

公开(公告)日：2014-04-17

申请号：US14037885

申请日：2013-09-26

Applicant: MediaTek Inc.

Inventor： Hung-Yueh CHEN ,  Chi-Chen LEE ,  Chih-Yuan TSAI ,  Chun-Pin CHEN ,  Yen-Cheng LAI

IPC: H04W36/00

CPC classification number: H04W36/0066 ,  H04W36/0022

Abstract: A communications apparatus includes an RF signal processing device, a baseband signal processing device and a processor. The processor controls operations of the RF signal processing device and the baseband signal processing device, camps on a first cell of a first RAT, collects cell selection/reselection parameters of one or more frequencies of the first RAT in an autonomous fast return (AFR) list, switches from the first RAT to the second RAT to camp on a second cell of the second RAT, establishes a connection with a peer communications apparatus via the second cell, receives a connection release message or a channel release message from the second cell to release the connection, and switches from the second RAT to the first RAT by performing a cell selection procedure or a redirection procedure according to the AFR list to camp on a third cell of the first RAT.

Abstract translation: 通信装置包括RF信号处理装置，基带信号处理装置和处理器。 处理器控制RF信号处理设备和基带信号处理设备的操作，驻留在第一RAT的第一小区上，在自主快速返回（AFR）中收集第一RAT的一个或多个频率的小区选择/重选参数， 列表，从第一RAT到第二RAT的交换机驻留在第二RAT的第二小区上，经由第二小区建立与对等通信装置的连接，从第二小区接收连接释放消息或信道释放消息到 释放连接，并且通过执行根据AFR列表的小区选择过程或重定向过程从第二RAT切换到第一RAT，以驻留在第一RAT的第三小区上。

公开(公告)号：US20220110026A1

公开(公告)日：2022-04-07

申请号：US17466076

申请日：2021-09-03

Applicant: MEDIATEK INC.

Inventor： Chih-Yuan TSAI ,  Tsung-Ming LEE ,  Ho-Wen PU

IPC: H04W36/00 ,  H04W36/30 ,  H04W76/30

Abstract: A method for switching between different RATs is provided. The method is executed by a mobile communications device camping on a first cell using a first Radio Access Technology (RAT). The method includes: determining, by a controller of the mobile communications device, a data transmission rate of the mobile communications device in the first cell; sending, by the controller, a first measurement report according to the determined data transmission rate, wherein the first measurement report is intended to trigger a handover procedure initiated by the first cell or to release a radio resource control (RRC) connection; and switching, by the controller, to camp on a second cell using a second RAT via the handover procedure or a local releasing procedure after the sending of the first measurement report.

公开(公告)号：US20210297898A1

公开(公告)日：2021-09-23

申请号：US16820854

申请日：2020-03-17

Applicant: MEDIATEK INC.

Inventor： Chih-Yuan TSAI ,  I-Wei TSAI ,  Jun-Jie SU ,  Yi-Lun CHEN

IPC: H04W28/06 ,  H04L29/08

Abstract: A wireless communication method for reducing the receival of unwanted data is provided. The wireless communication method for a TCP session includes the steps of determining whether a TCP session associated with a first subscriber identity module (SIM) of the UE is not required; and in response to determining that the TCP session is not required, the processor terminates the TCP session.

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：US20200015303A1

公开(公告)日：2020-01-09

申请号：US16458361

申请日：2019-07-01

Applicant: MEDIATEK INC.

Inventor： Chih-Yuan TSAI ,  Wei-Chiang PENG

IPC: H04W76/15 ,  H04W8/18 ,  H04W80/10

Abstract: A mobile communication device including a first RF device, a second RF device, and a controller is provided. The first RF device performs wireless transmission and reception utilizing a first RAT. The second RF device performs wireless transmission and reception utilizing a second RAT. The controller uses a first subscriber identity to make a first call or conduct a first data session via the first RF device, determines whether a dual connectivity on the first RAT and the second RAT is supported in response to a request for using a second subscriber identity to start a second call or a second data session via the second RF device, and allows the second call or the second data session to start during the first call or the first data session in response to the dual connectivity on the first RAT and the second RAT being supported.

公开(公告)号：US20190306760A1

公开(公告)日：2019-10-03

申请号：US16362983

申请日：2019-03-25

Applicant: MEDIATEK INC.

Inventor： Tsung-Huan CHENG ,  Hsi-Feng CHEN ,  Kuan-Hung TSAI ,  Chih-Yuan TSAI ,  Tsan-Ya PENG

IPC: H04W36/00 ,  H04L29/06

Abstract: A mobile communication device including a Radio Frequency (RF) device and a controller is provided. The controller is coupled to the RF device and configured to allocate the RF device to selectively communicate with a Packet Switched (PS)-based network using a first subscriber identity or with a service network using a second subscriber identity, and ignore a paging message associated with the first subscriber identity during an ongoing on-demand service associated with the second subscriber identity.