非對稱式無線感測網路之多跳式路由設計

在多跳式無線感測網路中，感測器所蒐集的資訊需藉由感測器來幫忙轉送，每個感測器因所在位置不同，所以每個感測器所承受的壓力也就不同，進而造成網路瓶頸。過去的文獻中依據多跳式無線感測網路的特性，進行各層感測器壓力的分析，並調整傳輸距離，以達到負載平衡的目的。在本文中我們容許多層的感外器將資料傳送至下一層或下兩層之感測器，以達到減少傳送資料所需的跳數與負載平衡的效果。而在此假設下，各層的傳輸距離比剛好形成費伯納西數列。由我們的模擬結果顯示這樣的傳輸距離調整策略確實可以提升整體網觀效能並提高資料的到達率。

In multi-hop wireless sensor networks, sensors collect information required by sensors to help relay each sensor location, so sensors near around the base station withstand more pressure resulting network bottlenecks. Lot of proposed literature, based on a multi-hop wireless sensor networks, achieve load balance by adjusting the transmission distance of sensors according to the analytic result of sensors pressure. In this article, we allow sensors send data to the sensors in the next one or the next two layers in order to reduce the hops to the base station and achieve lad balance at the same time. The transmission distance of each layer thus becomes a Fibonacci series. The simulation results show that the proposed transmission distance adjustment strategy can indeed improve delivery rate.