... system. Wireless Sensor Networks Applications via High Altitude Systems 13 Wireless Sensor Networks Applications via High Altitude SystemsZhe Yang and Abbas MohammedX Wireless Sensor Networks ... 0,13 0,39% 0, 06 0,18% Average ρ=1 0,10 0,19% 0,02 0,05% 0,01 0,03% Table 1. Travelling times along pipes for different sensors Emerging Communications for Wireless Sensor Networks2 04. ... of sensor node with different transmission rate in the single cell and multi cell HAP-WSN scenario Emerging Communications for Wireless Sensor Networks3 2 Fig. 3. Design and view of sensor...