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A OSPF Routing Scheme based on Energy Profiles and Its Characteristics for QoS-Aware Energy Saving(QAES) in IP Core Networks
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 Title & Authors
A OSPF Routing Scheme based on Energy Profiles and Its Characteristics for QoS-Aware Energy Saving(QAES) in IP Core Networks
Seo, Yusik; Han, Chimoon;
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Nowadays various methods for energy saving have been studied in IP networks. This paper suggests a 2-phase OSPF routing method for energy saving on IP networks having various energy profiles and analyzes its characteristics. The phase-1 of the routing is an OSPF routing method considering the energy cost of devices besides existing metrics to minimize energy consumption. In the phase-2 of the routing, it makes core nodes go into sleep sate for energy saving and reroutes the paths affected by sleeping core nodes. At this time, we confirm that the characteristics of mean delay and energy efficiency can be satisfied by limiting an allowable hop number in the reroute paths, and utilization rate of nodes and links for assuring energy saving and network-level QoS. Since the efficiency of energy saving and delay characteristics differ according to selection methods of core nodes to go into sleep state, it is that the a method of core node selection based on MP(minimum_path) is more excellent than others in terms of network-level QoS and energy saving in IP networks.
Energy Saving;QoS-Aware Energy Saving;Energy Profile;Energy Profile based OSPF Routing;
 Cited by
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