22HRISTENSEN K, GUNARATNE C, NORDMAN B, et al. The next "rontier for communications networks: power management[J]. Com- ~uter Communications, 2004, 27(18): 1758-1770.
3CHRISTENSEN K. Green networks: opportunities and chal- lenges[EB/OL], http://www.ieeelcn.org/prior/LCN34/2009_Keynote_ Christensen.pdf, 2009.
4Advanced configuration & power interface(ACPI)[EB/OL], http:// www. acpi.info/spec.htm,2011.
5ENERGY STAR version 5.0 specification for computers[EB/OL]. http://www.energystar.gov/ia/partners/prod_development/revisions/do wnloads/computer/Version5.0_Computer_Spec.pdf/,2008.
7DEMEESTER P, PICKAVET M. An inconvenient truth: en- ergy-efficient future Internet[EB/OL]. http://www.future-internet.eu/ fileadmin/documents/consultation_meeting_3 l_Jan_08/Demeester_ Internet of the Future_31_jan_08.pdf, 2008.
8The energy efficient internet project[EB/OL], http://www.csee.usf. edu/~ christen/energy/mail.html,2012.
9The energy efficient digital networks project[EB/OL], http://effi- cientnetworks.lbl.gov/,2012.
10BARROSO L A, HI3LZLE U. The case for energy-proportional com- puting[J]. IEEE Computer, 2007, 40(12): 33-37.