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Wireless sensor networks (WSNs) are emerging as essential and popular ways of providing pervasive computing environments for various applications. In all these environments energy constraint is the most critical problem that must be considered. Clustering is introduced to WSNs because of its network scalability, energy-saving attributes and network topology stabilities. However, there also exist some...
ZigBee is a well accepted industrial standard for wireless sensor networks based on IEEE 802.15.4. Since aiming for the application of low data rate, low price and low power consumption, ZigBee networks have the limited resources such as computation complexity and storage space. So it is especially important to design an efficient and effective routing protocol to save the consuming energy and extend...
Clustering routing protocols have prominent advantages over flat routing protocols in terms of scalability, which is very useful for wireless mesh network with dense nodes distribution. However, clustering schemes will add large extra overhead in order to select cluster-heads and collect neighbor nodes information during the phase of cluster construction. At present, there exist a lot of excellent...
Different from traditional networks, wireless sensor networks (WSNs) are highly dependent on specific applications and are severely constrained by energy, storage capacity and computing power. To prolong the lifetime of the whole networks, energy awareness is an essential consideration when we design or analyze routing protocols. In this paper, we present a review of recent routing protocols in WSNs...
In this paper, we analyze the current clustering algorithms and introduce the cluster-tree network model; then benefiting from the good organization of cluster-tree networks, we propose a novel clustering mechanism that conceptually seperate the whole networks into clusters according to serveral formulas. Then we not only make use of the advantages of cluster routing but avoid the computation and...
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