Concentric topology architectures based the optimal routing algorithm in wireless sensor networks

• Main Authors: Yung-Chi Chang, 張詠齊
• Other Authors: Young-Long Chen
• Format: Others
• Language: zh-TW
• Published: 2013
• Online Access: http://ndltd.ncl.edu.tw/handle/8stw4a

碩士 === 國立臺中科技大學 === 資訊管理系碩士班 === 101 === Wireless sensor networks (WSNs) is composed by a group of wireless sensor nodes that these nodes can sense and monitor environmental information. Nodes are based on the battery''s energy, so the node''s power is limited. In order to reduces the energy consumption, nodes transmit data to the others nodes. In this thesis, we analyze the energy consumption and transmission routing for wireless sensor network. We proposed two algorithms that are Opportunistic Large Array Concentric Optimal-Routing Algorithm (OLACORA) and Opportunistic Large Array Adaptive Concentric Routing Algorithm (OLAACRA). The sink is located at the center in the concentric circle topology. In our proposed OLACORA, a source node request to send data to the sink, we can find the optimal routing to improve energy efficiency of nodes according to the transmission distance. Besides, OLAACRA is adjusting the number layer of concentric circles in the sensing field. We calculate the optimal number layer of concentric circles via the distance between sink and field boundary when the distance of each layer is the same in a concentric circles topology. Then we find relay nodes to reduce energy consumption that relay nodes forward data to the sink.