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On the resource utilization of multi-connectivity transmission for URLLC services in 5G new radio

Mahmood, Nurul Huda; Karimi, Ali; Berardinelli, Gilberto; Pedersen, Klaus I.; Laselva, Daniela (2019-04-18)

 
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https://doi.org/10.1109/WCNCW.2019.8902865

Mahmood, Nurul Huda
Karimi, Ali
Berardinelli, Gilberto
Pedersen, Klaus I.
Laselva, Daniela
Institute of Electrical and Electronics Engineers
18.04.2019

N. H. Mahmood, A. Karimi, G. Berardinelli, K. I. Pedersen and D. Laselva, "On the Resource Utilization of Multi-Connectivity Transmission for URLLC Services in 5G New Radio," 2019 IEEE Wireless Communications and Networking Conference Workshop (WCNCW), Marrakech, Morocco, 2019, pp. 1-6. doi: 10.1109/WCNCW.2019.8902865

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doi:https://doi.org/10.1109/WCNCW.2019.8902865
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Abstract

Multi-connectivity with packet duplication, where the same data packet is duplicated and transmitted from multiple transmitters, is proposed in 5G New Radio as a reliability enhancement feature. This paper presents an analytical study of the outage probability enhancement with multi-connectivity, and analyses its cost in terms of resource usage. The performance analysis is further compared against conventional single-connectivity transmission. Our analysis shows that, for transmission with a given block error rate target, multi-connectivity results in more than an order of magnitude outage probability improvement over the baseline single-connectivity scheme. However, such gains are achieved at the cost of almost doubling the amount of radio resources used. Multi-connectivity should thus be selectively used such that its benefits can be harnessed for critical users, while the price to pay in terms of resource utilization is simultaneously minimized.

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