CL-SARA: Cross-Layer Resource Allocation for DVB-S2X VL-SNR Satellite Downlink Under Reactive Load-Aware Jamming
11th International Conference on Recent Advances in Air and Space Technologies, Conference Program, RAST 2026, İstanbul, Türkiye, 13 - 15 Mayıs 2026, (Tam Metin Bildiri)
- Yayın Türü: Bildiri / Tam Metin Bildiri
- Doi Numarası: 10.1109/rast69551.2026.11672357
- Basıldığı Şehir: İstanbul
- Basıldığı Ülke: Türkiye
- Anahtar Kelimeler: anti-jamming, DVB-S2X, fairness, jamming mitigation, MODCOD, quality of service, resource allocation, satellite security, VL-SNR
- Boğaziçi Üniversitesi Adresli: Evet
Özet
Reactive, load-aware jammers in DVB-S2X Very Low Signal-to-Noise Ratio (VL-SNR) satellite downlinks target the most power-loaded carrier, driving synchronized user migrations that concentrate load on the escape carrier and invite immediate re-targeting - a self-reinforcing "Whac-a-Mole"feedback loop. Power-only defenses cannot break this loop: they sacrifice non-critical (NC) user fairness and carrier stability, and an inherent jamming detection delay causes the allocator to waste power budget on physically irrecoverable links - the futility of persistence. We propose the Cross-Layer Security-Aware Resource Allocation (CL-SARA) framework, which resolves this Security-Fairness-Stability Trilemma by coupling a jam-aware dynamic bandwidth split with utility-driven carrier selection, a futility-aware adaptive sacrifice policy with self-healing hysteresis, and two-layer NC fairness safeguards. Against the SARA baseline under DVB-S2X PHY constraints, CL-SARA eliminates NC starvation completely (0% vs. 92%) and recovers 94% of wasted power, while restoring salvageable-user Quality of Service (QoS) satisfaction to 92.7%, suppressing MODCOD violations by 83%, and reducing carrier switching overhead by 58% - establishing, to our knowledge, the first cross-layer anti-jamming framework for contested VL-SNR satellite downlinks.