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This paper presents GeoGrid, a geographical location service overlay network system, for providing scalable location-based services to a large and growing number of mobile users. GeoGrid is designed as a decentralized and geographical location aware overlay network and provides system-level facilities and optimizations for balancing load in the presence of node heterogeneity, dynamically moving hot-spots (location queries), and unpredictable rate of node join, departure and failure. GeoGriddoi:10.1109/icdcs.2007.113 dblp:conf/icdcs/ZhangZL07 fatcat:ybf6xg5zu5fdrfvyc3a7cyqfoe