RMER: Reliable and Energy-efficient Data Collection for Large-scale Wireless Sensor Networks
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A novel event data collection approach named RMER (Reliability and Multi-path Encounter Routing) is proposed for meeting reliability and energy efficiency requirements. The contributions of the RMER approach are the following: (a) Fewer monitor nodes are selected in hotspot areas that are close to the Sink, and more monitor nodes are selected in non-hotspot areas, which can lead to increased network lifetime and event detection reliability. (b) The RMER approach sends data to the Sink by converging multi-path routes of event monitoring nodes into a one-path route to aggregate data. Thus, energy consumption can be greatly reduced, thereby enabling further increased network lifetime.