Date Added: Jan 2011
Data aggregation protocols can reduce the cost of communication, thereby extending the lifetime of sensor networks. Prior work on data aggregation protocols has focused on tree-based or cluster-based structured approaches. Although structured approaches are suited for data gathering applications, they incur high maintenance overhead in dynamic scenarios for event-based applications. The goal of the authors' work is to design techniques and protocols that lead to efficient data aggregation without explicit maintenance of a structure.