Index Coding Algorithms: Cooperative Caching and Delivery for F-RANs

In a Fog Radio Access Network (F-RAN), fog access points (F-APs) are equipped with caches that can store popular files during off-peak hours. Besides, they densely deployed to have overlapping radio coverage so requested be delivered cooperatively using beamforming. The bottleneck of the network is typically in bandwidth-limited wireless fronthaul, which connects cloud server F-APs. This work studies index coding design for cooperative caching and delivery F-RAN minimize fronthaul traffic transmit energy. Index algorithms designed considering cached content at F-APs possibility beamforming under coded uncoded schemes. An optimal polynomial-time algorithm repetition an efficient heuristic Maximum Distance Separable (MDS) designed, their superior performance verified by simulations. study further extended consider tradeoff between load link energy consumed network. At expense more traffic, opportunities increased, significantly reducing consumption. Algorithms achieve crafted, simulation results show well balances tradeoff.