Power-efficient OADM port assignment based on connection-holding-time awareness

The global warming and the energy crisis require an energy saving information communication network, including in the optical networking. Recently, network nodes are becoming more modular, which provides more flexible power management. In this work, we consider modular node architecture and first introduce power-saving in the OADM port assignment problem. A power-efficient port assignment approach, called STA, is proposed which exploits the knowledge of lightpath holding time to improve the performance of power-saving. We conduct simulation experiments on 14-node NSF network, and observe that significant power saving is achieved by employing our algorithm comparing to other holding-time-unaware algorithms.