An Energy-Efficient Access Control Algorithm with Cross-Layer Optimization in Wireless Sensor Networks

• 作者: Shaoqian Li Zhi Chen
• 来源期刊: 无线传感网络(英文)
• 学科: 工学
• 关键词: Wireless Sensor Network (WSN) CROSS-LAYER Design ENERGY Efficient ENERGY Consumption PER Bit THROUGHPUT
• 年，卷（期）: 2010,（2）
• 页码范围: 168-172
• 页数: 5页
• 分类号: TN92

摘要

This paper presents a wireless sensor network (WSN) access control algorithm designed to minimize WSN node energy consumption. Based on slotted ALOHA protocol, this algorithm incorporates the power control of physical layer, the transmitting probability of medium access control (MAC) layer, and the automatic repeat request (ARQ) of link layer. In this algorithm, a cross-layer optimization is preformed to minimizing the energy consuming per bit. Through theory deducing, the transmitting probability and transmitting power level is determined, and the relationship between energy consuming per bit and throughput per node is provided. Analytical results show that the cross-layer algorithm results in a significant energy savings relative to layered design subject to the same throughput per node, and the energy saving is extraordinary in the low throughput region.