Abstract
The new use case of 5G network, such as industrial wireless control system and Machine-to-Machine (M2M) communication system, requires high reliability and real-time communication (ultra low-latency) at the same time. To increase system reliability, re-transmission scheme is one of popular technique, but it introduces a significant communication latency. To address this latency introduced by conventional re-transmission scheme, this paper presents re-transmission diversity through channel selectivity. Adjacent channel selection and random channel selection are the two channel selectivity schemes that are being considered as fast and low-latency channel selection method. The performance comparison of these two schemes are evaluated in an industrial wireless system. Evaluation results show that channel selectivity based on adjacent channel selection gives a better performance as compared with random channel selection. Furthermore, the impact of channel selectivity in different channel models are also presented to evaluate its effectiveness and to provide an insight for final deployment.
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