Improvement in Energy Optimization in Telecommunication Network Service

Energy-efficient operation is an important issue today in telecommunication networks and in the near future. Due to the fact that the energy consumption rises with the increased in demand for capacity and network speed, this arises a strategies for a sustainable network management. It is a well-known fact that traffic demands vary significantly over periods and areas, most notably in day/night- and in weekly cycles. This provides the main potential for energysaving strategies. Here is the question of how much power is necessary to operate a network during peak or low-traffic times? How much energy is spent in the core and in metro regions of the network and how big are the savings in lowdemand scenarios if we always assume the system powerminimum in these situations? The study respects realistic side constraints, such as protection requirements and routing schemes, and takes the special structure of an extensive nation-wide optical network, including backbone and regional sections, into account. This paper presents a comprehensive summary of recent work addressing energy efficient and low-power design within all layers of the telecommunication network.