This blog is by Joachim Seifert from the Networks business of Nokia.
“This is the first SDN use case I’ve seen that actually makes sense!”
Music to my ears – and from a CTO of one of the largest Scandinavian operators! The operator had watched our joint demonstration with Coriant on how to overcome the limitations of today’s mobile backhauls by applying SON principles.
In fact, all the feedback at Mobile World Congress (MWC) was overwhelmingly consistent: Expanding self-organizing networking principles to the mobile backhaul is the next logical step towards a true dynamic end-to-end Quality of Experience (QoE) management. And our demonstration also made the benefits of SDN in mobile networking clear.
Today, operators can introduce all the bells and whistles available in modern self-organizing networks to maintain a good quality of experience for their subscribers, but capacity issues still drive customer complaints. Typically, the radio access side of the end-to-end QoE chain is optimized to react dynamically to changing network conditions, while the mobile backhaul is set up to cope with static traffic peaks based on forecasts rather than actual user traffic patterns. This results in massive unused capacity. Gigabytes of bandwidth are out there waiting to be put into action by the routing protocols in the case of link or network element failures, but fail to be mobilized if user traffic starts to congest a pipe.
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