Active location reporting for emergency call in UMTS IP multimedia subsystem

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

*Corresponding author for this work

Research output: Contribution to journalArticle

11 Scopus citations

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.

Original languageEnglish
Article number5351703
Pages (from-to)5837-5843
Number of pages7
JournalIEEE Transactions on Wireless Communications
Volume8
Issue number12
DOIs
StatePublished - 1 Dec 2009

Keywords

  • Emergency call
  • IP multimedia core network subsystem (IMS)
  • Location tracking
  • Universal mobile telecommunications system (UMTS)

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