Mr. Yangguang Liu Profile

Yangguang Liu

at Beijing Univ of Posts and Telecommunications

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Proceedings Article | 19 November 2007 Paper

Research and realization of service-driven mechanism in IP over WDM network

Yangguang Liu, Hongxiang Wang, Yuefeng Ji

Proceedings Volume 6784, 67843Z (2007) https://doi.org/10.1117/12.745775

KEYWORDS: Optical networks, Wavelength division multiplexing, Spectrographs, Wavelength division multiplexing networks, Green fluorescent protein, Data communications, Network architectures, Networks, Time division multiplexing, Asynchronous transfer mode

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Traditional transportation networks adopt the static resource configuration while the backbone of IP data with varieties of characteristics (such as the burst, randomicity), and here arises the problem of how to allocate proper resources to them. Because some type of IP data services are very sensitive to packet loss, the quality of service drops dramatically. So it is critical to change the original static control-based mode to traffic-driven mode so as to achieve bandwidth allocation according to demand. A service-driven mechanism in IP over WDM is proposed. It adapt to the burst and randomicity characteristics of IP services. To meet different requirements, QoS of different levels and working modes is provided for users, with which network resources can be utilized more sufficiently. We established a principle experiment to demonstrate this mechanism. Due to the burst and random characteristics of IP services, the traffic flow over the allocated bandwidth is lost under the static resource configuration while the problem does not occur under the service-driven mechanism because new light path is applied and acquired to transport the extra services when the traffic flow exceeds the traffic threshold. We've tested packet loss rate of IP services running under the static resource configuration mode and the service-driven mode. From the result, we can see that the throughput of networks can be greatly improved with low packet loss rate by adopting service-driven mechanism.

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