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An Experimental Inter-Slice RAN Controller for 4G/5G Cellular Networks

This paper introduces an experimental inter-slice RAN controller to allow resource isolation between slices in 4G/5G networks. The inter-slice RAN controller differs from others in the literature in that it allows radio resources in each transmission time interval (TTI) to be used by different slices, dynamically adjusted according to slice feedback to the controller. The inter-slice controller also allows different scheduling strategies to be used for different slices. The proof-of-concept is then implemented by using Software Defined Radio (SDR) and srsLTE software suite. The experimental results show the effectiveness of the RAN inter-slice controller in effectively managing radio resources for different slices.