无线传感器网络中基于一种新型P坚持CSMA协议的参数分析  

Parameter analysis based on a new P-persistent CSMA protocol in WSN

作　　者：占港 丁洪伟[1] 保利勇[1] 官铮[1] 何敏[1] ZHAN Gang;DING Hongwei;BAO Liyong;GUAN Zheng;HE Min(School of Information,Yunnan University,Kunming 650504,China)

机构地区：[1]云南大学信息学院,云南昆明650504

出　　处：《现代电子技术》2018年第24期21-27,共7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);国家自然科学基金:无线网络中轮询控制系统分析与改进的研究(61461054)~~

摘　　要：为了提高无线传感器网络节点的能量利用率,提出一种新型CSMA随机多址协议。首先运用平均周期法求出吞吐率、传输速率、时延和能耗的数学表达式。其次加入多通道和优先级机制,使系统能够根据节点的负载分配适当的服务等级与信道资源。然后引入双时钟机制,减少系统的平均空闲周期时间,从而提高吞吐率。最后引入自适应机制,使系统的吞吐率和能耗能够维持稳定。仿真实验表明,仿真值与理论值一致,并且随着信息分组到达率的不断增加,新协议的吞吐量与能量有效性优异,证明了该协议能够有效地提高传输效率,减少能耗,可运用到无线通信领域。A new CSMA random multi-access protocol is proposed to improve the energy utilization rate of wireless sensor network nodes.The average period method is used to obtain the mathematical expression of the throughput rate,transmission rate,time delay and energy consumption.The multi-channel priority mechanism is added to allocate appropriate service levels and channel resources for the system according to node loads.The double-clock mechanism is introduced to reduce the average idle cycle time of the system,so as to improve the throughout rate.The adaptive mechanism is introduced to make the through-put rate and energy consumption of the system maintain stable.The results of the simulation experiment show that the simulation values are consistent with the theoretical values,and with the continuous increase of the information packet arrival rate,the throughput and energy efficiency of the new protocol become superior,which proves that the protocol can effectively improve the transmission efficiency,reduce energy consumption,and be applied in the wireless communication field.

关 键 词：无线传感器网络 CSMA 平均周期法 吞吐率 能量有效性 自适应机制 

分 类 号：TN915-34[电子电信—通信与信息系统]