Broadband access system such as OLT/DSLAM is generally highly reused especially for smaller carriers. Burst traffic at congestion time like evening leads to overloaded bandwidth which makes poor performance experience to customers. The new SDN solution provides a better QoS solution to save extra bandwidth upgrade. It uses SDN switch to replace the conventional aggregation switch on top of OLT/DSLAM for precise QoS control, which can greatly relieve the network congestion pressure with a better customer experience.
Dynamic scheduling based on user type/policy/real-time bandwidth utilization
Ensuring fairness under overloaded traffic
Extra bandwidth for specific customers in the case of availability