The GLI system: A global system managing geographical location information of mobile entities

Sohgo Takeuchi, Yasuhito Watanabe, Fumio Teraoka

Research output: Contribution to journalArticle

Abstract

We propose the Geographical Location Information (GLI) system that maps a mobile entity on the Internet to a geographical position. Users can look up the latest geographical location information of registered mobile entities (forward-lookup) and can also search for mobile entities within a specified area (reverse-lookup). The GLI system consists of home and area servers. The home server maintains latest geographical location information of the mobile entities and processes forward-lookup requests. The area server maintains the latest geographical location information of the mobile entities in the area that it manages and processes reverse-lookup requests. To provide a highly scalable system, home and area servers are managed in a distributed manner based on a hierarchical server structure and delegation of authority to servers that manage lower layers. To reduce the amount of traffic due to distributed management, the delegation information of authority is cached by the servers. In our performance evaluation of the GLI system, the prototype implementation can handle 4,500-8,000 requests/sec for location lookup and location registration. We found that 52 home servers and 33 area servers are enough to handle all cars in Japan under some assumed parameters through the performance evaluation.

Original languageEnglish
Pages (from-to)2066-2075
Number of pages10
JournalIEICE Transactions on Communications
VolumeE84-B
Issue number8
Publication statusPublished - 2001 Aug
Externally publishedYes

Keywords

  • Distributed management
  • Geographical location information
  • Internet
  • Location based service
  • Mobile

ASJC Scopus subject areas

  • Software
  • Computer Networks and Communications
  • Electrical and Electronic Engineering

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