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1. (WO2018128307) METHOD FOR PROVIDING MOBILE COMMUNICATION-BASED INTERNET TELEPHONE SERVICE AND MOBILE COMMUNICATION SYSTEM THEREFOR

Pub. No.:    WO/2018/128307    International Application No.:    PCT/KR2017/015175
Publication Date: Fri Jul 13 01:59:59 CEST 2018 International Filing Date: Fri Dec 22 00:59:59 CET 2017
IPC: H04M 7/00
H04M 3/42
Applicants: KT CORPORATION
주식회사 케이티
Inventors: SEON, Yong-Mun
선용문
KO, Ki-Young
고기영
JUNG, Joo-Young
정주영
Title: METHOD FOR PROVIDING MOBILE COMMUNICATION-BASED INTERNET TELEPHONE SERVICE AND MOBILE COMMUNICATION SYSTEM THEREFOR
Abstract:
Disclosed are a method for providing a mobile communication-based Internet telephone service and a mobile communication system therefor. This method is a method for providing a mobile communication-based Internet telephone service, wherein a home subscriber server manages service coverage area information, that is, information on an area where an Internet telephone service is available to each user. Thereafter, a base station controller provides the Internet telephone service to an Internet telephone terminal connected thereto through a base station, using the service coverage area information provided by the home subscriber server. Here, the service coverage area information is based on a tracking area (TA) comprising multiple cells.