Oscillation control for n-dimensional congestion control model via time-varying delay
Oscillation control for n-dimensional congestion control model via time-varying delay
复制标题
基于时变延迟的n维拥塞控制模型的振荡控制
DOI:
10.1007/s11431-011-4488-8
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发表时间:
2011-06
期刊:
影响因子:
--
通讯作者:
Xu Jian
中科院分区:
文献类型:
--
作者:
Zhang Shu;Xu Jian
Time delay or round trip time (RTT) is an important parameter in the model of Internet congestion control. On the one hand, the delay may induce oscillation via the Hopf bifurcation. In the present paper, a congestion control model of n dimensions is considered to study the delay-induced oscillation. By linear analysis of the n-dimensional system, the critical delay for the Hopf bifurcation is obtained. To describe the relation between the delay and oscillation analytically, the method of multiple scales (MMS) is employed to obtain the bifurcating periodic solution. On the other hand, it can be understood that the oscillation will increase the risk of congestion for the network system. To avoid the congestion derived from the oscillation, a new control scheme is proposed by perturbing the delay periodically. Particularly, according to our study, it is possible to control the oscillation by perturbing only one of the n delays. This provides a practical scheme for the oscillation control in the real network system. By MMS, the strengths of the perturbations are predicted analytically such that the oscillation disappears. To give an example, an eight-dimensional model is studied in detail. The analytical results are in good agreement with the numerical simulations.
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影响因子:
6.8
作者:
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通讯作者:
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影响因子:
2
作者:
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DOI:
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发表时间:
2003-12
期刊:
--
影响因子:
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DOI:
10.1177/058310248101300507
发表时间:
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期刊:
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DOI:
10.1007/bfb0095239
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期刊:
--
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