Abstract

Energy consumption and energy efficiency of telecommunication networks are important for network operators regarding both, cost and sustainability aspects. Among several options, load-adaptive network operation—where the provided network capacity is coupled dynamically to the temporally fluctuating traffic characteristics—is a prominent and promising opportunity to improve network energy efficiency. General principles of load-adaptive network operation regimes are presented for a universal broadband operator network and their effects to network energy efficiency are explored. Based on a structure model of a telecommunication network, techniques for adjusting the capacity load-adaptively in different network sections are discussed with respect to the energy-saving potential, the current status and the challenges for application in networks ahead. Operator network sections as well as customer networks are covered; double-digit percentages of energy savings per network section are obtained in load-adaptive operation regimes as compared to the conventional network operation. When applying all those techniques in a holistic view to current realistic large operator networks, the double-digit per-section improvements transform into a significantly lower overall energy saving potential: This is caused by large parts of legacy network equipment forming a base electrical load not amenable to load-adaptive operation. When coupling the power consumption of networks to the temporally and spatially varying traffic demands in load-adaptive regimes their currently very predictable power draw behavior changes and may have significant effects in the interplay with power utilities in the upcoming Smart Energy transformation.

© 2013 IEEE

PDF Article

References

You do not have subscription access to this journal. Citation lists with outbound citation links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription

Cited By

You do not have subscription access to this journal. Cited by links are available to subscribers only. You may subscribe either as an OSA member, or as an authorized user of your institution.

Contact your librarian or system administrator
or
Login to access OSA Member Subscription