A Key Management Scheme for Heterogeneous Wireless Sensor Networks
Yuquan Zhang, Lei Wei · 2015
A key management strategy is presented for heterogeneous wireless sensor networks.The wireless sensor networks have some sensor nodes that are more powerful than other nodes.Both ordinary nodes and heterogeneous nodes are evenly distributed respectively in a sensing area that is divided into a number of same equilateral hexagons.The pairwise keys between nodes are established through utilizing the concept of the overlap key sharing and the random key pre-distribution scheme.Analysis demonstrates that the connectivity and security of wireless sensor networks have been improved obviously with some heterogeneous nodes.