Hybrid Transmission Scheme for Improving Link Reliability in mmWave URLLC Communications

Adamu, Paul Ushiki ORCID: 0000-0002-6131-5351, López-Benítez, Miguel ORCID: 0000-0003-0526-6687 and Zhang, Jiayi ORCID: 0000-0003-2434-4329 (2023) Hybrid Transmission Scheme for Improving Link Reliability in mmWave URLLC Communications. IEEE Transactions on Wireless Communications, 22 (9). pp. 6329-6340.

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Official URL: http://dx.doi.org/10.1109/twc.2023.3241792

Abstract

Ultra-Reliable and Low-Latency Communication (URLLC) represents a key ingredient of current 5G and future 6G mobile communication networks. The demanding reliability requirement set for URLLC claims for novel techniques that can deliver the necessary level of reliability without sacrificing the overall system capacity. In this context, this work presents and analyses a hybrid transmission scheme for improved reliability in millimetre wave bands with adaptive diversity combining. The proposed scheme is based on a hybrid approach that combines two links, one in the FR1 band (characterised by lower capacity but higher reliability due to more favourable propagation) and one in the FR2 band (offering higher capacity but experiencing a less reliable connectivity). The proposed scheme dynamically adapts the usage of both links in order to exploit the complementary characteristics of both bands (reliability of FR1 bands and capacity of FR2 bands) by switching between FR2-only and joint FR1-FR2 transmission according to the instantaneous channel quality in the main FR2 link. The performance is evaluated under two popular and well-known diversity combining techniques, namely Selection Combining (SC) and Maximal Ratio Combining (MRC). The obtained results demonstrate that the proposed scheme can achieve the same level of reliability as a continuous dual-link transmission scheme but with a much lower level of links usage and without sacrificing (and indeed enhancing) the capacity, thus making it a suitable candidate to deliver URLLC services in a resource-efficient manner.

Item Type:	Article
Divisions:	Faculty of Science and Engineering > School of Electrical Engineering, Electronics and Computer Science
Depositing User:	Symplectic Admin
Date Deposited:	02 Feb 2023 12:00
Last Modified:	15 Mar 2024 06:08
DOI:	10.1109/twc.2023.3241792
Related URLs:	Publisher
URI:	https://livrepository.liverpool.ac.uk/id/eprint/3168100