User-Centric Secure Cell Formation for Visible Light Networks With Statistical Delay Guarantees

In next-generation wireless networks, providing secure transmission and delay guarantees are two critical goals. However, either of them requires a concession on the rate. this article, we consider visible light network consisting multiple access points users. Our first objective is to mathematically evaluate achievable rate under constraints security. The second provide cell formation with customized statistical security for each user. First, propose user-centric design called formation, in which artificial noise considered, flexible user scheduling determined. Then, based effective capacity theory, derive statistical-delay-constrained secrecy formulate problem as stochastic optimization (OP). Further, Lyapunov transform OP into series evolutionary per-slot drift-plus-penalty OPs. Finally, modified particle swarm algorithm an interference graph-based proposed solve We obtain dynamic independent set scheduled users well parameters. Simulation results show that can achieve better delay-constrained than existing approaches.