Energy-Efficient FSO Reconfiguration under User Mobility in Hybrid Fiber-IAB Backhaul

Abstract

User mobility creates stochastic, time-varying backhaul demand that static capacity provisioning cannot match. We propose a closed-loop, load-aware hysteresis controller for hybrid fiber-IAB-FSO backhaul and show that energy drops faster than coverage: 8% to 44% energy savings cost only 0.9% to 6.7% coverage.

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