POWER LINE COMMUNICATION LOCAL AREA NETWORK

摘要

PURPOSE: A power line communication LAN(Local Area Network) is provided to construct a relay system for a mobile communication service at a low cost by using the existing power line. CONSTITUTION: A power line and ground line for each phase are connected to a power line communication units(200-1¯200-3), and a power line communication modem control unit(210) capable of connecting the Internet is connected to the power line of 3-phase 4-wire type. Each power line communication unit(200-1¯200-3) comprises a power line communication modem. The power line communication modem control unit(210) is a PC(Personal Computer) embedding three power line communication modem, and has a bridge function for forming a communication signal route and a routing function for connecting the communication unit of a power line LAN with the exclusive line of the external Internet(220).