Optimizing Next-Gen Communications: Combining Passive RISs in Cross Deployment

This paper aims to introduce an approach for the simultaneous deployment of passive reconfigurable intelligent surfaces (PRIS) and active reconfigurable intelligent surfaces (ARIS) in 6G networks to optimize both capital and operational costs while maximizing network performance, energy efficiency, and signal coverage. By analyzing the energy consumption and costs of 5G base stations and comparing the merits of PRIS and ARIS, the study proposes a strategic deployment method: PRIS in urban areas to mitigate signal blockages and ARIS in suburban and rural areas to amplify signals over longer distances. Simulations demonstrate that this cross-deployment significantly enhances network performance, with PRIS reducing blind spots in urban regions, thus requiring fewer base stations for full coverage, and ARIS boosting signal strength in rural areas, extending base station reach and enhancing connectivity. This strategy leads to substantial reductions in costs and improves channel capacity, supporting green technology and sustainable development goals for future 6G networks.