GIS Extension of Location-based P2P and Its Application

Geo-location oriented network (G-LocON) is a communication framework to construct location-based peer-to-peer (P2P) networks. G-LocON can enable direct communication to other terminals in a specified search area, which is defined as a circular shape in the current implementation. To realize more flexible peer search, this paper proposes an extension of G-LocON with geographic information service (GIS). We also develop an emergency alert system on smartphones using the proposed method. Subjective evaluations show that the proposed method successfully improves the peer search mechanism and that the developed application is useful and practical.