A Self-Organized Clustering for Transmission Power Control Adapting to Change of Node Density in MANETs

Assurance network technologies, which can make their own performance stable when various network complexities exists in the network, have been proposed to realize trustable terminal/infrastructure service applications. So far, autonomous clustering and hierarchical routing protocol Hi-AODV, to which the assurance network technologies are applied, have been also proposed as efficient network management methods for dynamic change of the number of nodes in MANETs. However, these methods do not have capability for adapting to frequent change of distribution of nodes. When distribution of nodes in a network changes, it is considered that dense and sparse areas may occur in the network as time proceeds. In particular, nodes in the dense area induce radio wave interference because each node usually communicates with other nodes using constant transmission power. Moreover, radio wave interference may induce increase of packet loss and energy consumption. In this paper, we propose high assurance autonomous clustering and Hi-AODV by incorporating the self-organized transmission power control function into the original autonomous clustering and Hi-AODV. Therefore, the high assurance autonomous clustering and Hi-AODV have capability for adapting to frequent change of node density in MANETs. We also have evaluate the proposed methods through simulation experiments.