一种基于分簇和概率函数的电力线通信MAC机制  

A cluster and probability function based MAC mechanism in low voltage power line communication network

作　　者：张扬[1] 曾晓峰[2] 

机构地区：[1]武汉大学电气工程学院,湖北武汉430072 [2]新疆生产建设兵团兴新职业技术学院,新疆乌鲁木齐830074

出　　处：《武汉大学学报（工学版）》2015年第2期216-219,共4页Engineering Journal of Wuhan University

摘　　要：MAC(media access control)协议是低压电力线通信(lowvoltage power line communications,LPLC)网络的重要基础之一.当前基于LPLC的用电信息采集系统通信所使用的MAC协议主要为CSMA/CA(carrier sense multiple access with collision avoidance).但是在周期性用电数据采集型LPLC网络中,CSMA/CA易导致信道竞争频繁影响网络的通信效率.针对该问题,提出了一种基于分簇和概率函数的MAC(cluster and probability-function based MAC,CP-MAC)机制,该机制采用分簇的方式并引入概率函数的方式决定信道争用,以有效抑制节点间的信道竞争和通信冲突.仿真分析表明,CP-MAC机制能有效地降低节点间通信冲突并提高通信效率.Effici communication collision avoida cluster and pro ciency, in whic the probability- LPLC network ency of the media access control （MAC） is one of important issues of low voltage power line （LPLC）. There exists efficiency problem in current carrier sense multiple access with the nee（CSM/CA） mechanism of large-scale LPLC network. Aimed to solve this problem, a bability-function based MAC （CP-MAC） mechanism is presented to improve the MAC effi- h the network is divided into clusters; and competition is conducted among clusters using -function. Finally, the simulation results show that the CP-MAC is able to improve the performance in term of packet loss rate, throughout and delay.

关 键 词：低压电力线载波通信 MAC 分簇 概率函数 

分 类 号：TM73[电气工程—电力系统及自动化]