Journal
PHYSICA A-STATISTICAL MECHANICS AND ITS APPLICATIONS
Volume 390, Issue 12, Pages 2401-2407Publisher
ELSEVIER
DOI: 10.1016/j.physa.2011.02.002
Keywords
Layered complex network; Random network; Scale-free network; Network capacity
Categories
Funding
- Ministry of Education of China
- National Science Fund for Distinguished Young Scholars [60725104]
- 973 Program [2007CB310706]
- National Natural Science Foundation of China [60873263, 60932002, 60932005]
- 863 Program [2008AA011001, 2008AA011002, 2009AA01Z254, 2009AA01Z215]
- MoE of China
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To minimize traffic congestion, understanding how traffic dynamics depend on network structure is necessary. Many real-world complex systems can be described as multilayer structures. In this paper, we introduce the idea of layers to establish a traffic model of two-layer complex networks. By comparing different two-layer complex networks based on random and scale-free networks, we find that the physical layer is much more important to the network capacity of two-layer complex networks than the logical layer. Two-layer complex networks with a homogeneous physical topology are found to be more tolerant to congestion. Moreover, simulation results show that the heterogeneity of logical and physical topologies makes the packet-delivery process of two-layer networks more efficient in the free-flow state, without the occurrence of traffic congestion. (C) 2011 Elsevier B.V. All rights reserved.
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