標題: Active Location Reporting for Emergency Call in UMTS IP Multimedia Subsystem
作者: Tsai, Meng-Hsun
Lin, Yi-Bing
Wang, Hsiao-Han
資訊工程學系
Department of Computer Science
關鍵字: Emergency call;IP multimedia core network subsystem (IMS);location tracking;Universal Mobile Telecommunications System (UMTS)
公開日期: 1-Dec-2009
摘要: The IP Multimedia Core Network Subsystem (IMS) provides multimedia services for Universal Mobile Telecommunications System (UMTS). In IMS, an emergency call is established by an Emergency-Call Session Control Function (ECSCF). The E-CSCF dispatches the call to the nearest Public Safety Answering Point (PSAP) according to the location of the caller. After emergency call setup, the caller's location is tracked by the PSAP through Location Polling. This paper investigates the performance of location tracking. Then we propose the Active Location Reporting scheme to improve the performance of location tracking. Our study indicates that the Active Location Reporting scheme may significantly outperform the Location Polling scheme.
URI: http://dx.doi.org/10.1109/TWC.2009.12.070080
http://hdl.handle.net/11536/149861
ISSN: 1536-1276
DOI: 10.1109/TWC.2009.12.070080
期刊: IEEE TRANSACTIONS ON WIRELESS COMMUNICATIONS
Volume: 8
起始頁: 5837
結束頁: 5843
Appears in Collections:Articles