| CROSS-DISCIPLINARY PHYSICS AND RELATED AREAS OF SCIENCE AND TECHNOLOGY |
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Effect of Adaptive Delivery Capacity on Networked Traffic Dynamics |
| CAO Xian-Bin1, DU Wen-Bo1,2**, CHEN Cai-Long2, ZHANG Jun1
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1School of Electronic and Information Engineering, Beihang University, Beijing 100083
2School of Computer Science and Technology, University of Science and Technology of China, Hefei 230026
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| Cite this article: |
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CAO Xian-Bin, DU Wen-Bo, CHEN Cai-Long et al 2011 Chin. Phys. Lett. 28 058902 |
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Abstract We introduce an adaptive delivering capacity mechanism into the traffic dynamic model on scale-free networks under shortest path routing strategy and focus on its effect on the network capacity measured by the critical point (Rc) of phase transition from free flow to congestion. Under this mechanism, the total node's delivering capacity is fixed and the allocation of delivering capacity on node i is proportional to niφ, where ni is the queue length of node i and φ is the adjustable parameter. It is found that the network capacity monotonously increases with the increment of φ, but there exists an optimal value of parameter φ leading to the highest transportation efficiency measured by average travelling time (〈T 〉). Our work may be helpful for optimal design of networked traffic dynamics.
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| Keywords:
89.75.Hc
05.10.-a
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Received: 13 September 2010
Published: 26 April 2011
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| PACS: |
89.75.Hc
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(Networks and genealogical trees)
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05.10.-a
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(Computational methods in statistical physics and nonlinear dynamics)
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