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IEEE 802.15.4/Zigbee standard constitutes a promising technology for the deployment of low-power and low rate Wireless Personal Area Networks. Many practical applications of this type of networks may require the association of a non-negligible number of nodes with strong power constraints. In that case, the most efficient way (especially in terms of battery consumption) of organising 802.15.4/Zigbee networks is by means of hierarchical cluster-trees. However, the standard does not impose any particular algorithm to organize, dimension or synchronize a cluster-tree network. This paper addresses this issue by proposing and comparing three simple strategies to parametrize the timing of superframes in static Zigbee cluster-trees.

Analysis of the scalability of hierarchical IEEE 802.15.4/Zigbee networks