TY - GEN
T1 - Energy efficient DSL via heterogeneous sleeping states
T2 - 2012 IEEE Global Communications Conference, GLOBECOM 2012
AU - Kamitsos, Ioannis
AU - Tsiaflakis, Paschalis
AU - Kerpez, Ken
AU - Ha, Sangtae
AU - Chiang, Mung
PY - 2012
Y1 - 2012
N2 - Switching off a DSL line to a low-power sleeping state is becoming an important method to enhance energy efficiency of DSL broadband access networks. Although a low-power (L2) state and an off (L3) state are already defined in DSL standards, they have not been fully exploited due to concern about the resulting time-varying crosstalk. In this paper, we develop a method to optimally choose the appropriate sleeping state based on the modem's switching cost characteristics and the power consumption incurred during each sleeping state. We further develop the optimal policy for switching to the appropriate sleeping state, allowing transitions between operating modes with different power and transmit rate. Numerical results on our realistic DSL simulator show that more flexibility in control, introduced by our approach, improves the energy-delay Pareto optimal tradeoff, and results in a more energy efficient and stable DSL system compared to the existing power saving policies.
AB - Switching off a DSL line to a low-power sleeping state is becoming an important method to enhance energy efficiency of DSL broadband access networks. Although a low-power (L2) state and an off (L3) state are already defined in DSL standards, they have not been fully exploited due to concern about the resulting time-varying crosstalk. In this paper, we develop a method to optimally choose the appropriate sleeping state based on the modem's switching cost characteristics and the power consumption incurred during each sleeping state. We further develop the optimal policy for switching to the appropriate sleeping state, allowing transitions between operating modes with different power and transmit rate. Numerical results on our realistic DSL simulator show that more flexibility in control, introduced by our approach, improves the energy-delay Pareto optimal tradeoff, and results in a more energy efficient and stable DSL system compared to the existing power saving policies.
UR - http://www.scopus.com/inward/record.url?scp=84877682225&partnerID=8YFLogxK
UR - http://www.scopus.com/inward/citedby.url?scp=84877682225&partnerID=8YFLogxK
U2 - 10.1109/GLOCOM.2012.6503595
DO - 10.1109/GLOCOM.2012.6503595
M3 - Conference contribution
AN - SCOPUS:84877682225
SN - 9781467309219
T3 - Proceedings - IEEE Global Communications Conference, GLOBECOM
SP - 3128
EP - 3134
BT - 2012 IEEE Global Communications Conference, GLOBECOM 2012
Y2 - 3 December 2012 through 7 December 2012
ER -