Span-Restorable Mesh Network Design to Support Multiple Quality of Protection (QoP) Service-Classes

In the modern business environment for optical mesh networking, there is considerable interest in being able to support a range of service classes, and to charge accordingly. In this work we consider the capacity design problem for different combinations of four protection priority classes in a span-restorable mesh network. Most significantly we have test-case findings that 15% to 30% of all demand can be in the gold class and enjoy 100% restorability, solely through preemption of economy class service capacity. This indicates the potential to design and operate mesh-based re-storable networks which have no spare capacity at all in the conventional sense: all capacity is bearing service of some paying type. The methods provided could be the basis for future mesh-based optical transport networks that simultaneously support multiple QoP services with optimal capacity.