Traffic dynamics in scale-free networks with limited packet-delivering capacity |
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Authors: | Han-Xin Yang Wen-Xu Wang Bing-Hong Wang |
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Affiliation: | a Department of Modern Physics, University of Science and Technology of China, Hefei 230026, China b Department of Electronic Engineering, Arizona State University, Tempe, AZ 85287-5706, USA c Department of Electronic Engineering, City University of Hong Kong, Kowloon, Hong Kong, China |
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Abstract: | We propose a limited packet-delivering capacity model for traffic dynamics in scale-free networks. In this model, the total node’s packet-delivering capacity is fixed, and the allocation of packet-delivering capacity on node i is proportional to , where ki is the degree of node i and ? is a adjustable parameter. We have applied this model on the shortest path routing strategy as well as the local routing strategy, and found that there exists an optimal value of parameter ? leading to the maximal network capacity under both routing strategies. We provide some explanations for the emergence of optimal ?. |
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Keywords: | 89.75.Hc 89.20.Hh 05.70.Fh |
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