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1. (WO2017035691) DEVICE, SYSTEM AND METHOD FOR VOLTE SETUP

Pub. No.:    WO/2017/035691    International Application No.:    PCT/CN2015/088362
Publication Date: Fri Mar 10 00:59:59 CET 2017 International Filing Date: Sat Aug 29 01:59:59 CEST 2015
IPC: H04W 76/02
Applicants: APPLE INC.
LIANG, Huarui
Inventors: LIANG, Huarui
ZHANG, Dawei
LI, Shangfeng
SUN, Hao
WANG, Zhiwei
Title: DEVICE, SYSTEM AND METHOD FOR VOLTE SETUP
Abstract:
A device, system, and method performs a Voice over Long Term Evolution (LTE) (VoLTE) call setup procedure. The device includes a transceiver establishing a connection with a LTE network and an Internet Protocol (IP) Multimedia Subsystem (IMS). The device includes a processor executing a VoLTE call application with a further user equipment, receiving an input to execute the VoLTE call application, and generating a data packet including an indication to trigger a dedicated bearer establishment procedure. The transceiver transmits the data packet to one of the LTE network and the IMS. The indication triggers the dedicated bearer establishment procedure to be performed during a Session Initiation Protocol (SIP) signal exchange procedure.