Integrated dynamic bandwidth allocation considering overhead in passive optical network

As network speeds (capacities) are increasing, it has become more important to reduce network power consumption. In passive optical networks, reducing the buffer size in aggregation layer-2 switches is an effective solution, but it can lead to the decrease of bandwidth efficiency. In this paper, we propose a dynamic bandwidth allocation scheme that avoids this decrease. Simulation results show that the proposal can attain almost 2.5 times higher bandwidth efficiency compared to the conventional scheme.