跻身未来的电力线通信:（七）PLC组网方案及应用

在分析电力线通信网络(PLC—NET)的特点和应用优势的基础上，提出了PLC—HLAN，PLC—VPN和PLC—AN等3种组网方案；在描述PLC—HLAN的家电控制等服务的同时，给出了总线式家庭网络的硬件组成，分析了网络的MAC子层的CSMA／CD及应用层的CAL协议的应用；在多种PLC—VPN的应用中，以自动抄表系统为例，给出了其组网的具体实现，包括网络的数据节点、集中和路由器的结构；在PLC—NET与电信网、计算机网的业务融合中，给出了PLC—AN的结构以及三网融合的接入方式，其中包括传输技术质量保证体系和相应的应用协议等。

PREDICTIVE SCHEMES FOR FUTURE POWER LINE COMMUNICATION Part Seven Power Line Communication Network Forms and Their Application

Based on an analysis of the properties and advantages of the power line communication network (PLC-NET), three forms of networks, PLC-HLAN, PLC-VPN and PLC-AN are suggested. By describing the concrete control services for home-appliances provided by PLC-HLAN, this paper proposes the hardware units of a family-based bus network, analyses the application of CSMA/CD protocol on the MAC sub layer and CAL protocol on the application layer. Among a number of PLC-VPN applications, via the example of an automatic meter reading system, the implementation of the network is described, including the structure of data nodes, concentrators and routers. In the amalgamation of PLC-NET with the cable TV network and the Internet, the structure of PLC-AN and the access method of three networks are proposed, including the QoS system and the corresponding protocols.