The Impact of Mobility on Physical Layer Security of 5G IoT Networks

The impact of mobility on physical layer security in 5G uRLLC

“…By studying the works of wireless communications, the value of the path‐loss exponent $$\alpha $$ generally ranges from 2 to 6, which is determined by the propagation environment 11,47 . The exponent $$\alpha =2$$ means that working well in some small indoor area prorogation environment.…”

“…The exponent $$\alpha =2$$ means that working well in some small indoor area prorogation environment. The exponent $$\alpha =4$$ means that working well on the generalized outdoor propagation model with a certain spread distance 47 . To make our study closer to the actual environment, we just consider two special cases ($$\alpha =4$$ and the interference‐limited network, i.e., $$\upsilon =0$$) of the COP, SOP, and DEP‐STC in uRLLC scenarios.…”

“…Theorem Considering the COP and SOP constraints, the lower bound of DEP‐STC with RWP mobile Eve, denoted by $${{\mathscr{C}}}_{\mathrm{lb}}^{\dagger }$$, can be obtained as $$${{\mathscr{C}}}_{\mathrm{lb}}^{\dagger }=(1-\sigma ){\lambda }_{{\rm{t}}}{\left[{\mathrm{log}}_{2}\left(1+{\beta }_{{\rm{t}}}^{\dagger }\right)-{\mathrm{log}}_{2}\left(1+{\beta }_{{\rm{e}}}^{\dagger }\right)\right]}^{+},$$$ where $${\beta }_{{\rm{e}}}^{\dagger }$$ is given in Equation (20) and according to result 47 $$${\beta }_{{\rm{t}}}^{\dagger }={\left[\frac{-G(4)+\sqrt{{G}^{2}(4)-4v\mathrm{ln}\left(\frac{1-\sigma }{1-\epsilon }\right)}}{2{d}_{0}^{2}\upsilon }\right]}^{2},$$$ which is the lower bound of Bob's decoding threshold with CJ scheme under COP constraint $$\sigma $$.…”

“…The code of RWP and RD models is from Tang et al 28 and Yu et al 47 All simulation data are simulated according to the simulation software MATLAB 2014a, RWP, and RD models, and the model parameters have been provided in Tables 2 and 3.…”

“…By studying the works of wireless communications, the value of the path-loss exponent α generally ranges from 2 to 6, which is determined by the propagation environment. 11,47 The exponent α = 2 means that working well in some small indoor area prorogation environment. The exponent α = 4 means that working well on the generalized outdoor propagation model with a certain spread distance.…”