Active location reporting for emergency call in UMTS IP multimedia subsystem

Author

Tsai, Meng-Hsun ; Lin, Yi-Bing ; Wang, Hsiao-Han

Author_Institution

Dept. of Comput. Sci., Nat. Chiao Tung Univ., Hsinchu, Taiwan

Volume

8

Issue

12

fYear

2009

fDate

12/1/2009 12:00:00 AM

Firstpage

5837

Lastpage

5843

Abstract

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.

Keywords

3G mobile communication; IP networks; emergency services; mobility management (mobile radio); multimedia communication; UMTS IP multimedia subsystem; active location reporting; emergency call; emergency-call session control function; location tracking; multimedia service; public safety answering point; universal mobile telecommunication system; 3G mobile communication; Access protocols; Computer science; Global Positioning System; Ground penetrating radar; Multimedia systems; Radio access networks; Safety; Telecommunication control; Telecommunication standards; Emergency call, IP multimedia core network subsystem (IMS), location tracking, Universal Mobile Telecommunications System (UMTS);

fLanguage

English

Journal_Title

Wireless Communications, IEEE Transactions on

Publisher

ieee

ISSN

1536-1276

Type

jour

DOI

10.1109/TWC.2009.12.070080

Filename

5351703