Radio Resource Allocation and Retransmission Schemes for URLLC over 5G networks

Abstract : Low latency targets for Ultra-Reliable Low Latency Communications (URLLC) may be conflicting with their stringent reliability requirements due to the need for re-transmissions. We explore in this paper the different resource allocation schemes for transmissions and re-transmissions depending on the requirements of the underlying service and on the traffic characteristics, focusing on Industrial Internet of Things (IIoT). We namely consider schemes with individual reservation versus a pool of contention-based reserved resources. We provide novel resource allocation schemes for initial transmissions and re-transmissions and derive corresponding analytical models for loss rates. We then show how to set the system parameters that allow meeting the URLLC requirements with low resource consumption.
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Submitted on : Thursday, May 2, 2019 - 12:05:24 AM
Last modification on : Monday, June 3, 2019 - 2:09:17 PM

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Salah Eddine Elayoubi, Patrick Brown, Matha Deghel, Ana Galindo-Serrano, Salah Elayoubi. Radio Resource Allocation and Retransmission Schemes for URLLC over 5G networks. IEEE Journal on Selected Areas in Communications, Institute of Electrical and Electronics Engineers, 2019, 37 (4), pp.896-904. ⟨10.1109/jsac.2019.2898783 ⟩. ⟨hal-02117082⟩

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