本文提出一种用于无线传感器网络数据传输的数据链路层自适应差错控制策略,以提高无线传感器网络通信可靠性。在无线传感器网络中,主要分析传感器节点发送的数据帧,以及各种信道可靠性。由于链路层数据帧所经历的跳数不同,它们的重要性有所不同,因此我们提出一种基于链路层数据帧所经历跳数自适应差错控制策略(AECM),该策略建立了跳数与差错控制方案之间的相互对应关系。数学分析表明,该策略在提高无线传感器网络数据通信整体效率的同时保持高能效。
This paper proposes an Adaptive Error Control Mechanism(AECM)at the data link layer for wireless sensor networks,in the hope of improving the reliability of data transmission.In a WSN,we are dealing with link layer frames leaning upon sensor nodes and with reliability of various channels.Some link layer frames are more important than others due to their path traverse.We propose a hop-by-hop link layer adaptive error control mechanism(AECM)based on the hop count of link layer frames,which establishes a relationship between hop count and error control schemes.We will show that the use of AECM based on hop count of a link layer frame can improve the overall efficiency of the communications inside a WSN while maintaining an acceptable level of reliability and high energy efficiency.