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1. (WO2017015790) PACKET SWITCHED VOICE SERVICE REGISTRATION TECHNIQUES WITH REDUCED OVERHEAD

Pub. No.:    WO/2017/015790    International Application No.:    PCT/CN2015/085056
Publication Date: Fri Feb 03 00:59:59 CET 2017 International Filing Date: Sat Jul 25 01:59:59 CEST 2015
IPC: H04W 36/00
Applicants: APPLE INC.
LIANG, Huarui
Inventors: LIANG, Huarui
ZHANG, Dawei
WANG, Zhiwei
Title: PACKET SWITCHED VOICE SERVICE REGISTRATION TECHNIQUES WITH REDUCED OVERHEAD
Abstract:
This disclosure relates to techniques for reducing overhead associated with packet switched voice service registration. According to some embodiments, a cellular network entity associated with a cellular network may receive a request relating to packet switched voice service from a wireless device. It may be determined whether subscription information for the wireless device indicates that packet switched voice service from the cellular network is permitted to the wireless device. A response to the request indicating whether packet switched voice service from the cellular network is available to the wireless device may be provided to the wireless device. The response may be generated based at least in part on the subscription information.