公开(公告)号：US20160323931A1

公开(公告)日：2016-11-03

申请号：US15138720

申请日：2016-04-26

Applicant: MediaTek Inc.

Inventor： Yu-Cheng HUANG ,  Chien-Chun HUANG-FU ,  Yu-Syuan JHENG ,  Jou-Man LIN

IPC: H04W76/06 ,  H04W76/02

CPC classification number: H04W76/30 ,  H04W36/0022 ,  H04W60/005 ,  H04W60/06 ,  H04W76/16 ,  H04W76/18 ,  H04W76/50

Abstract: A mobile communication device including a wireless transceiver and a controller is provided. The wireless transceiver performs wireless transmission and reception to and from a first network supporting only Packet-Switched (PS) services or a second network supporting Circuit-Switched (CS) services. The controller receives a rejection message of a Tracking Area Updating (TAU) procedure from the first network via the wireless transceiver when a Circuit Switch Fallback (CSFB)-related call originated from or terminated to the mobile communication device is pending, determines whether the rejection message includes a predetermined rejection cause, and in response to the rejection message including the predetermined rejection cause, selects the second network to make the CSFB-related call via the wireless transceiver without re-attaching to the first network.

Abstract translation: 提供了包括无线收发器和控制器的移动通信设备。 无线收发器执行到仅支持分组交换（PS）服务的第一网络或支持电路交换（CS）服务的第二网络的无线传输和接收。 当从移动通信设备发起或终止于移动通信设备的电路交换回退（CSFB）相关呼叫待处理时，控制器经由无线收发器从第一网络接收跟踪区域更新（TAU）过程的拒绝消息，确定是否拒绝 消息包括预定的拒绝原因，并且响应于包括预定拒绝原因的拒绝消息，选择第二网络经由无线收发机进行CSFB相关呼叫，而不重新附加到第一网络。