Minimizing Costs for Content Service Providers in 6G Space-Air-Ground Integrated Networks

The Space-Air-Ground Integrated Network (SAGIN) model in 6G networks, wherein Unnamed Aerial Vehicles (UAVs) and satellites enable communication between users and Content Service Providers (CSPs), is explored in this paper. Minimization of CSP costs is proposed through UAV caching, whereby UAVs directly deliver requested content from their cache or cluster. An optimization problem encompassing user clustering, UAV cache placement, and power allocation is formulated and solved using game theory, genetic algorithms, and efficient power allocation methods. Simulation results illustrate the effectiveness of our approach in reducing CSP costs and enhancing system efficiency in 6G networks.