Research On Routing Algorithm Of Power Line Carrier Sensor Network

The power line carrier sensor network(PLCSN) is a special self-organizing sensor network, composed of the power line transmission medium and a large number of the carrier nodes. Because of severe noise interference and signal attenuation, the network topology structure becomes more complex and easily changeable. It makes communication links more unstable and even broken off when the carrier nodes randomly join in or withdraw from the network. Accordingly, it decreases the reliability of network communication. It is a hot issue how to transmit the data stably and reliably on powerline whose channel is time-variant and complex. Therefore, it is very important to design a rational and effective dynamic routing algorithm for dynamically changeable power line carrier sensor network topology, in order to achieve stable and reliable communication.In view of the characteristics and logical topology of the power line carrier sensor networks, the analysis on cluster routing algorithm is carried on. Clustering algorithm is able to establish cluster-based structure for the whole network using less overhead. It is not only conducive to the node management and data integration, but also flexible and expansive to adapt dynamically changeable topology. As mentioned above, a culster based dynamic routing (CBDR) algorithm is presented. CBDR algorithm establishes cluster structure fast and dynamically by mean of partial traveral based on the lowest ID clustering algorithm. In the cluster process, the the structure simplify and the time-consumption reduce accordingly as the effective communication distance enlarges. In order to ensure the reliability of communication, the multi-path idea is introduced. In the process of maintaining the cluster structure, the adaptive on-demand mechanism is adopted to reduce the route overhead and keep the original cluster structure.Next, CBDR algorithm is simulated under Matlab simulation platform. The simulation results show that CBDR algorithm can effectively establish cluster structure and reduce the time consumption when the carrier nodes randomly join in or quit from the network, the algorithm can adaptively update the cluster structure,maintain efficient communication route and improve network reliability and stability. At last, CBDR algorithm characteristics are summarized and the further research work is put forward.