Method study of automatic routing for power line communication

The reliability of Power Line Communication (PLC) is the most important one of the factors that limit the application of PLC in practice seriously. The specialties and the methods of building up the PLC networks are discussed in the view of communication reliability, and the necessity of routing automatically is analyzed simply. A kind of ant colony algorithms named Like-Ant Colony Algorithm (LACA) is put forward, which is applicable for communicating in low-voltage networks, and the frame of automatic routing protocol and the relative automatic route model are given. With this model, the quality of channels can be identified real-time, and the dynamic route tables of PLC nodes can be modified to keep the available state of communication as following the change of channel quality, and an effective method of searching the optimum route for PLC is presented for building up general controlling networks. The emulation and the experimentation indicate that the LACA is a simple and effective method of extending the distance and improving the reliability of PLC.