摘要
无线传感器网络(WSN)因采用大量廉价的微型传感器节点并可以感知和处理传输网络覆盖区域内被感知对象的信息而备受人们喜爱。在此,提出一种基于碰撞长度可变的三时钟NP-CSMA提高系统的吞吐率,通过划分成功分组发送时间1+a、碰撞分组发送时间b+a、空闲分组发送时间a,利用平均周期法求出吞吐率、碰撞率和空闲率,并用仿真实验验证该理论的准确性。通过与其他协议进行对比,验证了所提协议的优越性。
Wireless sensor network(WSN)is popular because it uses a large number of inexpensive micro sensor nodes,and can sense and process the information of the perceived objects in the transmission network coverage area.In this paper,a three-clock NP-CSMA(non-persistent carrier sense multi-channel access)with variable collision length is proposed to improve the system throughput rate.By dividing the successful packet sending time 1+a,collision packet sending time b+a and idle packet sending time a,the throughput rate,collision rate and idle rate are calculated by means of average cycle method,and the accuracy of the theory is verified by simulation experiments.The superiority of this protocol is verified by comparison with other protocols.
作者
韩泽军
丁洪伟
保利勇
何敏
杨志军
HAN Zejun;DING Hongwei;BAO Liyong;HE Min;YANG Zhijun(School of Information Science and Engineering,Yunnan University,Kunming 650504,China)
出处
《现代电子技术》
北大核心
2019年第15期17-20,24,共5页
Modern Electronics Technique
基金
国家自然科学基金资助项目:融合式多址通信网络理论与控制协议研究(61461053)
无线网络中轮询控制系统分析与改进的研究(61461054)~~
