TY - JOUR
N2 - Current networks are designed for peak loads leading to low utilization of power resources. In order to solve this problem, a heuristic energy-saving virtual network embedding algorithm based on the Katz centrality (Katz-VNE) is proposed. For solving an energy-saving virtual network embedding problem, we introduce the Katz centrality to represent the node influence. In order to minimize the energy consumption of the substrate network, the energy-saving virtual network embedding problem is formulated as an integer linear program, and the Katz-VNE is used to solve this problem. The Katz-VNE tries to embed the virtual nodes onto the substrate nodes with high Katz centrality, which is effective, and uses the shortest paths offering the best factor of bandwidths to avoid the hot nodes. The simulation results demonstrate that the long-term average energy consumption of the substrate network is reduced significantly, and the long-term revenue/cost ratio, the acceptance rate of virtual network requests, and the hibernation rate of substrate nodes as well as links are improved significantly.
L1 - http://journals.pan.pl/Content/117017/PDF/art07.pdf
L2 - http://journals.pan.pl/Content/117017
PY - 2020
IS - No 3
EP - 595-608
KW - energy-saving virtual network
KW - integer linear programming
KW - Katz centrality
KW - network virtualization embedding
KW - virtualization
A1 - Zhu, Qiang
A1 - Wang, Qing-Jun
A1 - Zang, Mu-Jun
A1 - Wang, Zhen-Dong
A1 - Xiao, Chang
PB - Polish Academy of Sciences
VL - vol. 69
SP - 595-608
T1 - Heuristic energy-saving virtual network embedding algorithm based on Katz centrality
DA - 2020.09.15
UR - http://journals.pan.pl/dlibra/publication/edition/117017
T2 - Archives of Electrical Engineering
ER -