Data dissemination protocol based on independent grid structure in wireless sensor networks

There have been proposed many data dissemination protocols which use routing structures dependent on sinks or events in wireless sensor networks. However, as many mobile sinks and events exist in the network, such protocols are not energy-efficient due to frequent reconstructions of routing structures. Thus, in this paper, to provide the scalability and mobility of sinks and events, we propose new independent structure-based data dissemination protocol which exploits a k-level Independent Grid Structure (IGS) for data dissemination from sources detecting the events to sinks. The proposed protocol needs not to construct any routing structure irrespective of the number and the movement of both sinks and events. The proposed protocol also allows query or report packets to be sent to only a few grid headers in the k-level IGS and provides aggregation and multicasting of report packets by the k-level IGS. Simulation results show that the proposed protocol is superior to other protocols.