Enhancing traffic capacity of scale-free networks by link-directed strategy

Jinlong Ma, Weizhan Han, Qing Guo and Shuai Zhang
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Jinlong Ma: School of Electronics and Information Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
Weizhan Han: School of Electronics and Information Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China†The 54th Research Institute of China Electronics, Technology Group Corporation, Shijiazhuang 050081, P. R. China
Qing Guo: School of Electronics and Information Engineering, Harbin Institute of Technology, Harbin 150001, P. R. China
Shuai Zhang: #x2021;Bestpay Wealth Management, Beijing 100031, P. R. China

International Journal of Modern Physics C (IJMPC), 2016, vol. 27, issue 03, 1-12

Abstract: The transport efficiency of a network is strongly related to the underlying structure. In this paper, we propose an efficient strategy named high-betweenness-first (HBF) for the purpose of improving the traffic handling capacity of scale-free networks by limiting a fraction of undirected links to be unidirectional ones based on the links’ betweenness. Compared with the high-degree-first (HDF) strategy, the traffic capacity can be more significantly enhanced under the proposed link-directed strategy with the shortest path (SP) routing protocol. Simulation results in the Barabási–Albert (BA) model for scale-free networks show that the critical generating rate Rc which can evaluate the overall traffic capacity of a network system is larger after applying the HBF strategy, especially with nonrandom direction-determining rules. Because of the strongly improved traffic capacity, this work is helpful to design and optimize modern communication networks such as the software defined network.

Keywords: Scale-free networks; traffic capacity; betweenness centrality; link-directed strategy; unidirectional (search for similar items in EconPapers)
Date: 2016
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Citations: View citations in EconPapers (3)

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DOI: 10.1142/S0129183116500285

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