Secured communication protocol for internetworking ZigBee cluster networks

ZigBee uses the network security and application profile layers of the IEEE 802.15.4 and ZigBee Alliance standards for reliable, low-powered, wireless data communications. However, the ZigBee has problems of being less secure, and has a difficulty in distributing shared symmetric keys between each pair of nodes. In addition, the ZigBee protocol is inadequate for large sensor networks, which may consist of several very large scale clusters. In...