On the Multiplexing of Broadband Traffic and Grant-Free Ultra-Reliable Communication in Uplink

Renato Barbosa Abreu, Thomas Jacobsen, Gilberto Berardinelli, Klaus I. Pedersen, Nurul Huda Mahmood, Istvan Kovacs, Preben Elgaard Mogensen

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

3 Citations (Scopus)
324 Downloads (Pure)


5G networks should support heterogeneous services with an efficient usage of the radio resources, while meeting the distinct requirements of each service class. We consider the problem of multiplexing enhanced mobile broadband (eMBB) traffic, and grant-free ultra-reliable low-latency communications (URLLC) in uplink. Two multiplexing options are considered; either eMBB and grant-free URLLC are transmitted in separate frequency bands to avoid their mutual interference, or both traffic share the available bandwidth leading to overlaying transmissions. This work presents an approach to evaluate the supported loads for URLLC and eMBB in different operation regimes. Minimum mean square error receivers with and without successive interference cancellation (SIC) are considered in Rayleigh fading channels. The outage probability is derived and the achievable transmission rates are obtained based on that. The analysis with 5G new radio assumptions shows that overlaying is mostly beneficial when SIC is employed in medium to high SNR scenarios or, in some cases, with low URLLC load. Otherwise, the use of separate bands supports higher loads for both services simultaneously. Practical insights based on the approach are discussed.

Original languageEnglish
Title of host publication2019 IEEE 89th Vehicular Technology Conference (VTC Spring)
Number of pages6
Publication date27 Jun 2019
Article number8746589
ISBN (Print)978-1-7281-1218-3
ISBN (Electronic)978-1-7281-1217-6
Publication statusPublished - 27 Jun 2019
Event2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring) - Kuala Lumpur, Malaysia
Duration: 28 Apr 20191 May 2019


Conference2019 IEEE 89th Vehicular Technology Conference (VTC2019-Spring)
CityKuala Lumpur
Internet address
SeriesI E E E V T S Vehicular Technology Conference. Proceedings

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