An efficient approach of controlling traffic congestion in scale-free networks

Details An efficient approach of controlling traffic congestion in scale-free networks An efficient approach of controlling traffic congestion in scale-free networks

2008-06-11

arxiv.org/abs/0806.1845v1

Computer Science

Networking and Internet Architecture

7 pages, 5 figures

Scientific paper

10.1016/j.physa.2006.02.021

We propose and study a model of traffic in communication networks. The underlying network has a structure that is tunable between a scale-free growing network with preferential attachments and a random growing network. To model realistic situations where different nodes in a network may have different capabilities, the message or packet creation and delivering rates at a node are assumed to depend on the degree of the node. Noting that congestions are more likely to take place at the nodes with high degrees in networks with scale-free character, an efficient approach of selectively enhancing the message-processing capability of a small fraction (e.g. 3%) of the nodes is shown to perform just as good as enhancing the capability of all nodes. The interplay between the creation rate and the delivering rate in determining non-congested or congested traffic in a network is studied more numerically and analytically.

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