基于多链路故障的网络切片生存性算法.

A network slice survivability algorithm based on multiple link failures is proposed to ensure the continuity of user services when underlying network multi-link failed. By distinguishing the types of services carried on slices, the physical nodes are sorted according to the importance of the nodes and mapped when the request of Ultra-Reliable and Low Latency Communication Slice arrives. Then the faulty link adopts the algorithm of multiple backup paths. The paths that consume the least bandwidth resources are selected to remap the failure links in sequence to ensure service continuity on the slice. When the request of Enhanced Mobile Broadband Slice arrives, the breadth first search node mapping algorithm is adopted to recover the faulty link through multiple backup paths. Simulation results show that the algorithm can improve the average mapping success rate of slice, ratio of long-term average benefits to costs, physical link utilization rate, failure restoration rate, and shorten the average failure restoration delay. [ABSTRACT FROM AUTHOR]