Title :
IMT-2000 core network node systems
Author :
Tamura, Toshiyuki ; Takahashi, Tomoya ; Morita, Takashi ; Ohtaki, Koji ; Takeda, Hideo
Author_Institution :
NEC Commun. Syst. Ltd., Japan
Abstract :
The IMT-2000 third-generation network system has been operating in the Japanese market since May 2001. In order to provide value added phone services including CAMEL services, a layered call control architecture has been developed. This architecture could achieve smooth core network migration from 2G to 3G. This system provides MSC/VLR, SGSN, and GGSN functionalities based on ATM technology.
Keywords :
3G mobile communication; asynchronous transfer mode; cellular radio; telecommunication control; ATM; CAMEL services; GGSN; IMT-2000 core network node systems; IMT-2000 third-generation network system; Japanese market; MSC/VLR; SGSN; core network migration; layered call control architecture; value added phone services; 3G mobile communication; Cellular phones; Circuits; Communication system control; Communication system security; Data communication; Internet; Message service; Mobile communication; Quality of service;
Journal_Title :
Wireless Communications, IEEE
DOI :
10.1109/MWC.2003.1182106
