Abstract
Access networks consume a significant portion of overall Internet energy
consumption. With the increase of bit-rate requirements in access networks,
future-proof access technologies should be energy efficient. In this paper,
we show how we can build a very high-throughput “green”
hybrid wireless-optical broadband access network (WOBAN). We devise novel
energy-saving techniques for WOBAN to improve its energy efficiency and
network utilization. We present a mixed integer linear program (MILP) model,
which acts as a benchmark for evaluating our techniques. We analyze the
impact of energy-aware design and protocols on the performance of WOBAN over
dynamic traffic profiles. Illustrative numerical examples show that, with
suitable design parameters, we can efficiently reduce energy consumption in
WOBAN without significantly impacting the network
performance.
© 2010 IEEE
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