自监听模式下无线传感器网络的拥塞检测与控制方案  

Congestion detection and control scheme for wireless sensor networks in self monitoring mode

作　　者：牛磊 郭博 张岩 NIU Lei;GUO Bo;ZHANG Yan(School of Computer and Information Engineering,Fuyang Normal University,Fuyang Anhui 236037,China)

机构地区：[1]阜阳师范大学计算机与信息工程学院,安徽阜阳236037

出　　处：《阜阳师范大学学报(自然科学版)》2024年第4期27-33,共7页Journal of Fuyang Normal University:Natural Science

基　　金：安徽省高等学校自然科学研究重点项目(2023AH050406);安徽省智能计算与信创应用工程研究中心开放课题(ICII202307)资助。

摘　　要：无线传感器网络因有限的带宽、能量和计算能力等因素很容易产生网络拥塞,为此提出了一种在自监听模式下以跨层的方式联合物理层的信噪比与链路层的队列长度的新型拥塞检测与控制方案。变化较为敏感的信噪比通常被网络节点用来通信质量评估,在自监听模式下信噪比的变化规律可以及时的判断网络中流量的变化趋势,再结合节点缓冲区的队列长度可以准确检测网络拥塞。网络仿真结果表明该方案可以及时准确判断网络拥塞,和标准协议相比网络延时显著下降,网络吞吐量得到提升。The limited bandwidth, energy, and computing power of wireless sensor networks can easily lead to network congestion. Therefore, this paper proposes a new congestion detection and control scheme that combines the signal-to-noise ratio of the physical layer and the queue length of the link layer in a cross layer manner in self monitoring mode. The signal-to-noise ratio, which is sensitive to changes, is usually used by network nodes to evaluate communication quality. In self monitoring mode, the change pattern of signal-to-noise ratio can timely determine the trend of traffic changes in the network, and combined with the queue length of node buffers, it can accurately detect network congestion. The simulation results show that this scheme can timely and accurately determine network congestion, significantly reduce network delay compared to standard protocols, and improve network throughput.

关 键 词：无线传感器网络 自监听模式 拥塞检测 跨层 信噪比 

分 类 号：TN929.5[电子电信—通信与信息系统]