Active Location Reporting for Emergency Call in UMTS IP Multimedia Subsystem

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

doi:10.1109/mdm.2009.46

Active Location Reporting for Emergency Call in UMTS IP Multimedia Subsystem

Meng-Hsun Tsai, Hsiao-Han Wang + Show 1 more

https://doi.org/10.1109/mdm.2009.46

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Publication Date: Jan 1, 2009

Citations: 10

Affiliation: National Yang Ming Chiao Tung University

#Public Safety Answering Point #IP Multimedia Core Network Subsystem + Show 8 more

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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.

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