无线传感器网络S-MAC协议研究

传感器节点能量受限,节能是传感器网络中媒体访问控制（MAC）协议设计的首要问题。采用周期性睡眠机制、自适应侦听机制、串音避免机制和消息传递机制可使得传感器媒体访问控制（S-MAC）协议在网络能耗和时延方面得到改进。对S-MAC协议的改进主要有两种方式：动态调整、区别控制包与数据包的发送条件进行发送。对无线传感器网络,要想设计出一种满足各方面要求的MAC协议是不现实的,可针对不同应用的要求,灵活采用不同的方式,设计出相应的协议。

S-MAC Protocol for Wireless Sensor Networks

As sensor nodes are energy limited, saving energy is the primary issue in designing Medium Access Control (MAC) protocols in sensor networks. The Sensor Medium Access Control (S-MAC) protocol is developed to improve the network energy efficiency and latency performance through the periodical sleep, adaptive listening, crosstalk rejection, and message passing mechanisms. The S-MAC protocol can achieve better performance by allowing dynamic scheduling, and sending control and data packets under different transmission conditions. For the wireless sensor network, it's impractical to design a MAC protocol that will meet all the requirements. Varied approaches should be taken in designing the protocols that meet different applications' requirements.