Mission-Oriented Networks Robustness Based on Cascade Model

In network science, network connectivity is usually used to evaluate network performance, but this does not represent the services that network systems can provide. Therefore, the robustness of the mission when the network is damaged represents the service survivability of the network. This article introduces missions into the network system and constructs a mission-oriented network model. In this model, the execution of each mission requires resources. When resources are insufficient, the mission is completed by mutual communication and cooperation between nodes. Due to the damage of some nodes in the network system, the allocation of mission resources and the communication path will be changed. This may cause other nodes to fail due to congestion or overload. We build a cascading failure model to describe this process. This paper compares different attack strategies through simulation experiments, and it is found that node resources will play a critical role in robustness.