1. 後卓越進度報告 蔡育仁老師實驗室 2006/07/10

2. Non-uniform Deployment for Lifetime-based Sensor Networks Propose a non-uniform density for random deployment based on the distribution of power consumption to extend the lifetime of the whole network. Consider two WSN scenarios  Multihop routing  LEACH Server Line Server Multihop Routing LEACH

3. Calculation of Desired Density at the Distance d from Server Iterative Density Calculation

4. Numerical Result — Density of Deployment as a Function of d (Distance from Server) in 50 × 250 m 2 area Node Number = 200 Node Number = 500 Distance from Server ( 10m /unit) Normalized Density

5. Simulation — Lifetime Comparison Node Number = 200 Node Number = 500 Rounds (Time steps) Number of alive nodes

6. Simulation — Coverage Comparison Node Number = 200 Node Number = 500 Rounds (Time steps) Coverage Ratio