Delay-bounded Topology Construction and Routing Integration for Time-critical Services

Applications such as virtual/augmented reality, autonomous systems, and telemedicine require delay-bounded transmission. This paper combines the software-defined network (SDN) paradigm and proposes an integrated solution for topology construction and routing (TCR). First, the solution gives a delaybounded constraint for adding valid links, which can be adapted to various topology construction methods. Then, topology discovery, resource management, flow management, and route selection are performed in the orchestration and configuration plane. TCR enables time-sensitive network management and configuration with flexibility. The performance of the TCR is evaluated in a typical industrial network topology. The experimental results show that the TCR can effectively reduce the average path length (APL), guarantee bounded delay, and is beneficial for load balancing.