Delay-Constraint Power Efficient Data Gathering

Framework in Sensor Network

Abstract

My project is to build a data gathering framework applied in sensor network. This framework is applicable for mission-critical scenarios, where data packets are supposed to be delivered from source(s) to destination(s) in given delay constraint. All expired packets are considered as unreliable packets. Meanwhile, several power efficient strategies are implemented in this framework, since power conservation is critically important for sensor network. The framework is to do a tradeoff between reliable ratio (=reliable packets over all received packets, calculated at data sink) and power conservation.

In general, the framework can be divided into four phases:

1). Implement area coverage algorithm over entire network, and allow sensors without monitoring task to sleep.

2). Construct Backbone

3). Build delay sensitive reporting tree spanning data sink and all backbone nodes

4). Data gathering along paths in the constructed reporting tree