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Toward Improved Standards for Open RAN Interoperability: A Factor Screening Experiment
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AI
DOI：10.1109/tnsm.2026.3703354.png)
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Abstract
En 中文
As Open Radio Access Networks (Open RAN) move toward large-scale deployment, the industry requires a transition from binary “pass/fail” conformance testing to a rigorous performance metrology that characterizes system stability in multi-vendor environments. This study introduces a statistical factor screening methodology, utilizing a Resolution V fractional factorial design, to isolate the key configuration parameters that govern interoperability in a commercial-grade 7.2x functional split testbed. By executing a 1,024-run automated experimental campaign, we identify critical non-linear “performance boundaries” where specific combinations of modulation coding, power control, and UE scaling cause functional decoupling between disaggregated O-DU and O-RU components. Our results demonstrate that O-RU interoperability is not a static state but a dynamic boundary of functional invariance. This work provides a mathematically grounded framework for Mobile Network Operators (MNOs) to prioritize high-impact factors in certification and badging, accelerating the maturity of secure, high-capacity Open RAN ecosystems.
Keywords:
5G
open RAN
interoperability
downlink KPI
uplink KPI
factor screening
O-RU
Journal
IF:
5.4
Papers:
528
Citations:
9.2K