Joint Security-Reliability Performance Optimization in Low-Latency Industrial IoT Networks

Jie Wang, Yao Zhu, Yulin Hu, Anke Schmeink

Abstract: In this letter, we study an Industrial Internet of Things network comprising two legitimate sensors and a single eavesdropper, where both reliability and security of transmissions must be guaranteed. By addressing the tradeoff between reliability and security, we provide a joint optimization design to simultaneously maximize the joint security-reliability performance for both sensors via blocklength allocation and redundant bits selection. Both an optimal solution and a low-complexity solution are provided for the formulated dual-objective optimization problem. First, we transform the problem into an equivalent Pareto optimization one with an established feasible set and provide an integer-programming based solution. Subsequently, noting the high complexity of the design introduced by the integer-programming process, an efficient alternative search based approach is further proposed following the convexity characterization on relaxed Pareto optimization problem and the introduction of coding rate as a substitute for redundant bits. Numerical results validate our analytical results and demonstrate the impact of redundant bits and blocklength on the joint security-reliability performance.

External IDs:dblp:journals/wcl/WangZHS25