On the Resource Utilization of Multi-Connectivity Transmission for URLLC Services in 5G New Radio

Nurul Huda Mahmood, Ali Karimidehkordi, Gilberto Berardinelli, Klaus I. Pedersen, Daniela Laselva

Research output: Contribution to book/anthology/report/conference proceedingArticle in proceedingResearchpeer-review

12 Citations (Scopus)


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.

Original languageEnglish
Title of host publication2019 IEEE Wireless Communications and Networking Conference Workshop (WCNCW)
Number of pages6
Publication date18 Nov 2019
Article number8902865
ISBN (Print)978-1-7281-0922-0, 978-1-7281-0923-7
ISBN (Electronic)978-1-7281-0922-0
Publication statusPublished - 18 Nov 2019
EventIEEE Wireless Communications and Networking Conference - Marrakech, Morocco
Duration: 15 Apr 201919 Apr 2019


ConferenceIEEE Wireless Communications and Networking Conference
Internet address
SeriesI E E E Wireless Communications and Networking Conference. Proceedings


  • 5G
  • Dual-connectivity/multi-connectivity
  • PDCP duplication
  • new radio

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