Network power saving topology calculation method by powering off links considering QoS

In order to reduce the energy consumption of the network, we introduce a concept that realizes a low power consumption network by aggregating traffic on specific numbers of links and powering off link ports of routers that are not used. In this paper, we proposed a practical calculation method that can derive a low power consumption network considering QoS requirements. By iterating the process of powering off arbitrary numbers of links in a heuristic manner, a power-saving network topology is reconfigured. By computer simulation, it is shown that our proposed scheme can reduce the used links of network calculated within a reasonable time.