## 8 Network Setup, Results, and Discussion
### Results and Discussion
Figure 5: V-N’s influence on equipment’s coverage probability. clustered jamming devices in the overall network increases. Hence, our proposed method to model and analyze a UAV-assisted C-V2X network efficiently characterizes V-N links with jamming by employing MCP-distributed jammers. Figure 7 depicts the MBS's influence on the equipment's coverage probability. The coverage of V2M connections increases with the number of MBSs, while the coverage of V2L, V2N, and V2V connections decreases. This is because the path loss for the V2M connection decreases as the number of MBSs grows, boosting the SIR and coverage probability of the V2M connection relative to V2L, V2N, and V2V connections. V2X, V2V, V2M, V2L, and V2N connections without jammers have significantly higher coverage probabilities than the corresponding connections with MCP-distributed jammers because the obtained SIR of the corresponding V2X, V2V, V2M, V2L, and V2N connections with clustered jammers drops as the overall interference of the jamming equipment in the system increases. This shows that our proposed method to model and analyze a UAV-assisted C-V2X network efficiently characterizes V-N links with jamming by employing MCP-distributed jammers. The V2V connection (pink color line curve) and V2N connection (brown color line curve) show lower performance degradation in the presence of jammers in comparison with the V2M connection and V2L connection in the presence of jammers because for the given network parameters, V2M and V2L connections have higher association probability, which results in lowering the association, SIR, and coverage performance of the V2V and V2N connections in the presence of jammers. Figure 6: UAV’s influence on equipment’s coverage probability. Figure 8 shows the influence of jamming power on the equipment's coverage. The coverage of the V2X connection, V2V connection, V2L connection, V2N connection, and V2M connection with jamming decreases by raising the power of jammers relative to the coverage of respective connections without jammers. This is because, with the increasing power of the jammer, the overall interference power also increases, resulting in a lowering of the SIR and coverage probability of the respective connections with jammers. It is shown in the figure that the coverage probability of the V2L and V2N connections decreases in comparison with the V2M connection or V2V connection when the antenna 3D beam fluctuations increase from \(\sigma=0^{\circ}\) up to \(\sigma=3^{\circ}\) in the network due to strong winds, strong atmospheric pressures, and mechanical noise of the UAV rotors. This is because with higher variations in the beam width, the power received by the antenna reduces, resulting in a lowering of the obtained SIR and the coverage of the given V2L and V2N links. The V2V connection and V2N connection showed lower coverage probability in the presence of jamming when fluctuations of antenna beam width increased in comparison with the V2M and V2L connections in the presence of jamming because, for the considered network parameters, V2M and V2L connections have higher probabilities of association, which results in decreasing the association, SIR, and coverage probabilities of the V2V and V2N connections in the presence of jamming. Figure 9 depicts the influence of the jammer's power on the SE. The spectral efficiencies of the V2V connection, V2M connection, V2L connection, V2N connection, and the overall V2X connection without jammers exceed the respective spectral efficiencies of the V2V connection, V2M connection, V2L connection, V2N connection, and the overall V2X connection with jammers because by including jammers in the network, the overall interference in the network increases, resulting in a lowering of the SIR and SE of the V-N links with jammers. The SE of the V2X connection drops by raising the fluctuations of the beam of the antenna (from \(0^{\circ}\) to \(3^{\circ}\)) because the gain of the receiving antenna decreases, resulting in lower serving link's received power, SIR, and SE.