Metric Impact Towards Carbon-Aware Multi-domain Network Orchestration
Hao Ran Chi, Daniel Nunes Corujo, Ayman Radwan, Rui L. Aguiar · 2024
Under the fact that carbon footprint is broadly overlooked in information and communication technologies, multi-domain network orchestration, with even higher carbon footprint for inter-domain management than single-domain scenarios, is urged to be transited to be carbon-aware, towards Green 6G. To begin with, stakeholders are required to reach consensus on metrics for carbon measurement. However, there are limited efforts that discuss the impact of metrics, lack of which directly causes biased and chaotic network orchestration. This paper fills this research gap to provide a comprehensive analytics of metrics and their impacts towards carbon-aware multi-domain network orchestration. To do so, a generic architecture is developed correspondingly, based on which commonly used energy/carbon-aware metrics are summarized and analyzed. Representative scenarios are designed for simulation analysis to comprehensively reflect multi-domain network orchestration. Results reveal that improper metric selection could lead to up to 99.92% biased decision of network orchestration, regarding carbon footprint. In conclusion, this paper provides analytical guidance to the future carbon-aware multi-domain network orchestration, with the impact of metrics.