NAT-ZigBee: NAT-Based Address Assignment for Scalable ZigBee Networks
AbstractZigBee has been considered as one of the promising communication protocols for low-rate wireless personal area networks. Among the well-known ZigBee topologies, ZigBee cluster-tree is especially suitable for wireless sensor applications with its supporting of power-saving operation and light-weight routing. Due to the restriction of configuration parameters, some devices could be prohibited to join a ZigBee cluster-tree network and become orphans. The orphan problem leads to the difficulty in smoothly increasing the network coverage or device density. In this paper, we propose an NAT-based address assignment framework for a scalable ZigBee network which locally resolves the orphan problem without the reconfiguration of a whole network, while the light-weight ZigBee tree routing is maintained. The experimental results show that the proposed framework can significantly reduce the number of orphan devices compared to the original ZigBee address assignment scheme.KeywordsWireless Sensor NetworkMedium Access ControlNetwork Address TranslationNetwork AddressPrivate AddressThese keywords were added by machine and not by the authors. This process is experimental and the keywords may be updated as the learning algorithm improves.