Cutting the Electric Bill by Routing and Wavelength Assignment with Time-zones and Time-of-use Prices

Cavdar C., Yayımlı A., Wosinska L.

Asia Communications and Photonics Conference and Exhibition (ACP), Shanghai, China, 13 - 16 November 2011 identifier identifier

  • Publication Type: Conference Paper / Full Text
  • Doi Number: 10.1117/12.910044
  • City: Shanghai
  • Country: China
  • Istanbul Technical University Affiliated: Yes


We consider an energy-aware WDM core network, where the electric prices differ according to time intervals of the day, referred to as time-of-use rates. Since a large backbone network may have nodes scattered over several time zones, we exploit the time-of-use rates to lower the electric bill of the network provider. By using an ILP formulation of the bill minimization problem, we investigate the gain of total electric bill over two approaches where capacity and energy are optimized under different network traffic load conditions.