Insomnia in the Access

The biggest fraction of wired network energy is consumed by the access network, even though the individual access devices themselves have small power requirements. Unfortunately, straightforward techniques for sleeping during idle periods are inefficient in this environment because of the continuous lightweight traffic, and the absence of alternative paths that could carry the traffic. In this paper, the authors formalize the problem of saving energy in the predominantly DSL-based access networks, and describe two simple techniques: wireless user traffic aggregation that enables access devices to firmly sleep, and switching at the ISP side that significantly increases the number of power-hungry line cards that can sleep.

Provided by: Association for Computing Machinery Topic: Mobility Date Added: Aug 2011 Format: PDF

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