Moreover, it is an important guarantee for reliable data transmission. The topology architecture has a decisive influence on the data delay, throughput, network area, and routing strategy of communication between nodes. Īn important aspect of industrial buses is the underlying network topology architecture. The dependability of buses is a matter gaining attention as the complexity of aerospace electronic systems and the amount of data transferred are rapidly increasing. It provides a new idea for improving the reliability of industrial buses. It ensures reliable data transmission and has high robustness and reliability. The proposed topology increases the redundant paths of data transmission. In the time-dependent reliability analysis, when the operating time is 8000 h, the terminal pair reliability of the proposed topology with 10 nodes, 16 nodes, and 20 nodes is 3.53%, 10.87%, and 21.08% higher than that of AFDX, respectively the k-terminal reliability is 6.20%, 19.65%, and 32.58% higher than that of AFDX, respectively and the all-terminal reliability is 18.25%, 45.04%, and 63.86% higher than that of AFDX, respectively. In the time-independent reliability analysis, when the link reliability is 0.9, terminal pair reliability of the proposed topology with 10 nodes, 16 nodes, and 20 nodes is 5.78%, 17.75%, and 34.65% higher than that of AFDX, respectively k-terminal reliability is 10.04%, 31.97%, and 53.74% higher than that of AFDX, respectively and all-terminal reliability is 29.36%, 74.37%, and 107.91% higher than that of AFDX, respectively. The evaluations show that in the structural robustness analysis, when no nodes are removed, the natural connectivity of the proposed topology with 10 nodes, 16 nodes, and 20 nodes is 77.8%, 26.95%, and 81.39% higher than that of AFDX, respectively. In this paper, we design a novel redundancy topology and analyze the structural robustness, the number of redundant paths between two terminal nodes, and the reliability of the proposed topology by using natural connectivity and time-independent and time-dependent terminal pair reliability, k-terminal reliability, and all-terminal reliability comprehensively and quantitatively, and we compare these measures of the proposed topology with AFDX in three scenarios.

Topology architecture has a decisive influence on network reliability.

Redundancy in network topology