Partial scheduling based energy aware coverage in a heterogeneous sensing system
Rakib Hasan, Mahmuda Naznin, Sheikh Fazle Rabbi, Md. Iftekharul Islam Sakib · 2017
One of the major functions of a Wireless Sensor Network (WSN) is to provide the coverage to the network area. Many critical applications require different levels of coverage in the different parts of the network area which is generally called differential coverage. Providing differential coverage service in different period of time is a challenging due to the limited capabilities of the network nodes and due to the different levels of the demand. Moreover, different sensing devices possess different communication ranges and patterns. To handle this challenges, we focus on dynamically energy management with the required service delivery. We provide a self-adjusting approach to construct the energy efficient schedule of low powered wireless sensor nodes. For this, we consider several factors that are characterized by fuzzy membership for better approximation or selection. The evaluation function at first selects the most efficient node among the candidate nodes. Then in the next round, it selects the better node in conjunction with the previously selected nodes. We validate our method by doing experiments and we find that our framework provides the required service including saving energy.