A Novel Energy-Aware Design to Build Green Broadband Cable Access Networks

We propose and investigate energy-saving algorithms for DOCSIS-3.0 networks. By proactively monitoring traffic load, the algorithms achieve network-wide energy saving by re-adjusting CM's bonding groups and shutting down under-utilized upstream/downstream ports on the CMTS. Numerical simulations indicate that by applying the CM side algorithm only, we can achieve a possible 17.6% energy saving for 8192 CMs. We also study the fundamental tradeoff between energy-saving and packet queuing delay and estimate the upper bounds of the delays.