Research On Dynamic Routing Methods For PLC

Power Line Communication technology is most important one of the factors that limit the Application of Smart Grid. However, in PLC network, the characteristics of time-varying, high attenuation and high noise of the channel, have caused some problems like short distance of communication and poor reliability. It is quite difficult to resolve these problems at the physical layer, whereas they can be solved through the upper communication protocol. On the basis of this, the routing strategies are required, which used to find the reliable communication path. Existed routing algorithms are insufficient in terms of search time, ability to adapt and instantaneity so this paper designed and implemented an algorithm based on ant colony meter reading system power line carrier routing algorithm, this algorithm take the High adaptation of ant colony routing algorithm, high speed of GA and Channel characteristics of PLC into consider, which help improve the rapid, adaptive and optimization capabilities of routing algorithm.Firstly, we introduce the structure and network topology of power line carrier communication system, and existed power line routing algorithms, analyze their respective advantages and disadvantages. Secondly, based on data from testing, we analyze the shortcomings of existing routing algorithm and introduce a new routing algorithm which combines the characteristics of power line carrier channel, GA and ant colony system:GA-LBAS. GA-LBAS improve the updating of tabu table, rules of state transition, and searching rules in ant colony routing algorithm in order to adapt the complex structure of PLC, meanwhile, we take the load state into consider. Finally, on the simulation analysis find GA-LBAS have a good performance on feasibility, robustness, speed and load balancing.