Ultra-reliable low-latency communications (uRRLC) and enhanced mobile broadband (eMBB) traffics are needed to be supported expeditiously in the emerging 5G networks. To achieve ultra-reliability as high as 1 - 10~(-7) in uRLLC, ongoing eMBB packets should be stopped instantly, which results in reduced quality of services (QoS) of eMBB services. This difficulty, known as co-existence problem, is a serious concern in 5G cellular networks and requires a proper mechanism to protect the ongoing services. This paper introduces ANFIS-based reactive strategy for a flexible frame structure that can provide high priority to the uRLLC traffic while ensuring the reliability to other eMBB traffic in the 5G cellular network scenario. Proposed flexible frame structure approach can be a possible solution to the coexistence problem by providing improved QoS for eMBB and reduced delay for uRLLC. The experimental results prove that the proposed approach contributes to the critical advancement for forecasting performance in accordance with the error analysis results.
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