Power line communication (PLC) has become an important network access technology to conveniently and effectively provide various useful services such as remote meter reading, broadband Internet access, and home networking services.

The BPLC home controllers could control various domestic appliances such as a digital door-lock, a boiler, an oven and etc., because these controllers had various I/O specifications. We selected the Jini technology surrogate architecture as a home network middleware for our system, this technology was designed to access a home network system without a limitation of the devices

The utilization offield bus applications in industrial networks has grown very fast in the last years. This development is caused by the continuous increase of sensors and acmtors for modem automation and control concepts. However, some scenarios have shown that several and distributed arranged system nodes cannot be provided with energy

The utilization of existing powerlines for communication purposes opens many possibilities which can be advantageous used for a wide range of field bus applications. Nelworks with CSMAICA access (e.g. CAN) requires minimized signal delay times because these delays limits the possible transmission speed. CAN systems can be used Tor real-time applications and are especially time-critical. Therefore the maximum delay time on the transmission- and receive path must be smaller then a half bit time.

see fig 1 and fig 2 showing power line architecture