dorsal/arxiv
View SchemaThe effect of bandwidth in scale-free network traffic
| Authors | Mao-Bin Hu, Wen-Xu Wang, Rui Jiang, Qing-Song Wu, Yong-Hong Wu |
|---|---|
| Categories | |
| ArXiv ID | physics/0612095 |
| URL | https://arxiv.org/abs/physics/0612095 |
| DOI | 10.1209/0295-5075/79/14003 |
Abstract
We model information traffic on scale-free networks by introducing the bandwidth as the delivering ability of links. We focus on the effects of bandwidth on the packet delivering ability of the traffic system to better understand traffic dynamic in real network systems. Such ability can be measured by a phase transition from free flow to congestion. Two cases of node capacity C are considered, i.e., C=constant and C is proportional to the node's degree. We figured out the decrease of the handling ability of the system together with the movement of the optimal local routing coefficient $\alpha_c$, induced by the restriction of bandwidth. Interestingly, for low bandwidth, the same optimal value of $\alpha_c$ emerges for both cases of node capacity. We investigate the number of packets of each node in the free flow state and provide analytical explanations for the optimal value of $\alpha_c$. Average packets traveling time is also studied. Our study may be useful for evaluating the overall efficiency of networked traffic systems, and for allevating traffic jam in such systems.
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"abstract": "We model information traffic on scale-free networks by introducing the\nbandwidth as the delivering ability of links. We focus on the effects of\nbandwidth on the packet delivering ability of the traffic system to better\nunderstand traffic dynamic in real network systems. Such ability can be\nmeasured by a phase transition from free flow to congestion. Two cases of node\ncapacity C are considered, i.e., C=constant and C is proportional to the node\u0027s\ndegree. We figured out the decrease of the handling ability of the system\ntogether with the movement of the optimal local routing coefficient $\\alpha_c$,\ninduced by the restriction of bandwidth. Interestingly, for low bandwidth, the\nsame optimal value of $\\alpha_c$ emerges for both cases of node capacity. We\ninvestigate the number of packets of each node in the free flow state and\nprovide analytical explanations for the optimal value of $\\alpha_c$. Average\npackets traveling time is also studied. Our study may be useful for evaluating\nthe overall efficiency of networked traffic systems, and for allevating traffic\njam in such systems.",
"arxiv_id": "physics/0612095",
"authors": [
"Mao-Bin Hu",
"Wen-Xu Wang",
"Rui Jiang",
"Qing-Song Wu",
"Yong-Hong Wu"
],
"categories": [
"physics.soc-ph"
],
"doi": "10.1209/0295-5075/79/14003",
"title": "The effect of bandwidth in scale-free network traffic",
"url": "https://arxiv.org/abs/physics/0612095"
},
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