Routing and Data Dissemination over Large-Scale Wireless Sensor Networks with Multiple Sources and Mobile Sinks

Data dissemination is an essential task in large-scale wireless sensor networks (WSNs). While performing data dissemination under a battery power constraint, energy efficiency is a key design factor of routing protocol because deployed nodes cannot be replaced or recharged after deployment and a dead node may lead to the partition of whole networks. As a solution for the efficient data dissemination, in this paper, we propose a protocol namely Hierarchical Data Dissemination (HDD) which provides scalable and efficient data delivery to multiple sources and mobile sinks. HDD uses the facts that sink nodes are central gathering points and data forwarding paths are constructed and maintained hierarchically.