Hycast- podcast discovery in mobile networks
Proceedings of the 3rd ACM workshop on Wireless multimedia networking and performance modeling
An efficient event delivery scheme in mobile ad hoc communities
International Journal of Communication Networks and Distributed Systems
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Clustering techniques create hierarchal network structures, called clusters, on an otherwise flat network. In a dynamic environment--in terms of node mobility as well as in terms of steadily changing device parameters--the clusterhead election process has to be re-invoked according to a suitable update policy. Cluster re-organization causes additional message exchanges and computational complexity and it execution has to be optimized. Our investigations focus on the problem of minimizing clusterhead re-elections by considering stability criteria. These criteria are based on topological characteristics as well as on device parameters. This paper presents a weighted clustering algorithm optimized to avoid needless clusterhead re-elections for stable clusters in mobile ad-hoc networks. The proposed localized algorithm deals with mobility, but does not require geographical, speed or distances information.