Energy efficient exact kNN search in wireless broadcast environments

The advances in wireless communication and decreasing costs of mobile devices have enabled users to access desired information at any time. Coupled with positioning technologies like GPS, this opens up an exciting domain of location based services, allowing a mobile user to query for objects based on its current position. Main bottlenecks in such infrastructures are the draining of power of the mobile devices and the limited network bandwidth available. To alleviate these problems, broadcasting spatial information about relevant objects has been widely accepted as an efficient mechanism. An important class of queries for such an infrastructure is the k-nearest neighbor (kNN) queries, in which users are interested in k closest objects to their position. Most of the research in kNN queries, use unconventional broadcast indexes and provide only approximate kNN search [30, 15]. In this paper, we describe mechanisms to perform exact kNN search on conventional sequential-access R-trees, and...

• Type: Conference
• Year: 2004
• Where: GIS
• Authors: Bugra Gedik, Aameek Singh, Ling Liu
• Keywords: Approximate KNN Search, Database, Exact KNN Search, GIS 2004, KNN Search