公开(公告)号：US20190313327A1

公开(公告)日：2019-10-10

申请号：US16372133

申请日：2019-04-01

Applicant: MEDIATEK INC.

Inventor： Chien-Chun HUANG-FU ,  Zong-Syun LIN

IPC: H04W48/18 ,  H04M1/253 ,  H04M7/00 ,  H04W80/04 ,  H04W60/04 ,  H04W88/06

Abstract: Aspects of the disclosure can provide an apparatus and method for voice domain selection (VDS). A processing circuitry of user equipment (UE) is configured to receive an indication that an internet protocol (IP) multimedia core network subsystem (IMS) voice is unsupported over a 3GPP access, but is supported over a non-3GPP access in a first communication system. Then, the processing circuitry is configured to register to an IMS via the non-3GPP access in the first communication system and perform an IMS voice service over the non-3GPP access in the first communication system. The processing circuitry of the UE is further configured to switch to a second communication system when voice domain management (VDM) is set to the second communication system. After registering to the first communication system using a non-3GPP access, and registering to the IMS via the non-3GPP access in the first communication system, the processing circuitry of the UE can be configured to switch back to the first communication system from the second communication system.

公开(公告)号：US20160212795A1

公开(公告)日：2016-07-21

申请号：US14992150

申请日：2016-01-11

Applicant: MediaTek Inc.

Inventor： Chia-Wei CHANG ,  Zong-Syun LIN

IPC: H04W76/06 ,  H04W60/06

Abstract: A method for handling a PDN disconnection request performed by a communications apparatus communicating with a network device includes transmitting a PDN disconnect request message to the network device to request to disconnect a predetermined PDN connection; receiving a PDN disconnect reject message from the network device; obtaining a reject cause carried in the PDN disconnect reject message; and locally deactivating all other PDN connection(s) other than the predetermined PDN connection when the reject cause carried in the PDN disconnect reject message indicates that the last PDN disconnection is not allowed.

Abstract translation: 一种用于处理与网络设备通信的通信装置执行的PDN断开请求的方法包括：向所述网络设备发送PDN断开请求消息以请求断开预定的PDN连接; 从所述网络设备接收PDN断开拒绝消息; 获取在PDN断开拒绝消息中携带的拒绝原因; 并且当PDN断开拒绝消息中携带的拒绝原因指示不允许最后一个PDN断开连接时，本地去激活除预定PDN连接之外的所有其它PDN连接。