A dynamic bandwidth allocation scheme for internet of thing in network-slicing passive optical networks

The traffic from the Internet of Thing (IoT) characterizes self-similarity and burstiness. For time-sensitive IoT devices, how to guarantee real-time traffic forwarding is still a challenging problem. We introduce a network slicing scheme to separate a Network Slice (NS) for time-sensitive application and achieve real-time forwarding of time-sensitive traffic through the proposed buffer scheduling scheme. Departing from the conventional buffer management scheme buffering all time-sensitive traffic into the same queue, the proposed scheme adopts multi queues to buffer the packets with different latency requirements. We simulate a sliced-network 50G TDM-PON to distinguish the time-sensitive traffic and regular traffic and compare the proposed scheme with the traditional scheme. The proposed algorithm outperforms the service-loss ratio by 83.37% (load of 0.8) and reduces packet loss by 50.33% at the load of 0.3.