Slicing a single wireless collision channel among throughput- and timeliness-sensitive services

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Abstract

The fifth generation (5G) of wireless systems has a platform-driven approach, aiming to support heterogeneous connections with very diverse requirements. The shared wireless resources should be sliced in a way that each user perceives that its requirements have been met. Heterogeneity challenges the traditional notion of resource efficiency, as the resource usage has to cater for, e.g., rate maximization for one user and a timeliness requirement for another user. This paper treats a model for radio access network (RAN) uplink, where a throughput-demanding broadband user shares wireless resources with an intermittently active user that wants to optimize the timeliness, expressed in terms of latency-reliability or Age of Information (AoI). We evaluate the trade-offs between throughput and timeliness for Orthogonal Multiple Access (OMA) as well as Non-Orthogonal Multiple Access (NOMA) with successive interference cancellation (SIC). We observe that NOMA with SIC, in a conservative scenario with destructive collisions, is just slightly inferior to that of OMA, which indicates that it may offer significant benefits in practical deployments where the capture effect is frequently encountered. On the other hand, finding the optimal configuration of NOMA with SIC depends on the activity pattern of the intermittent user, to which OMA is insensitive.

Original languageEnglish
Title of host publicationICC 2021 - IEEE International Conference on Communications
Number of pages6
PublisherIEEE
Publication date23 Jun 2021
Pages1-6
ISBN (Print)978-1-7281-7123-4
ISBN (Electronic)978-1-7281-7122-7
DOIs
Publication statusPublished - 23 Jun 2021
Event2021 IEEE International Conference on Communications Workshops (ICC Workshops) - Montreal, Canada
Duration: 14 Jun 202123 Jun 2021

Conference

Conference2021 IEEE International Conference on Communications Workshops (ICC Workshops)
Country/TerritoryCanada
CityMontreal
Period14/06/202123/06/2021
SeriesI E E E International Conference on Communications
ISSN1550-3607

Keywords

  • Age of Information (AoI)
  • Non-Orthogonal Multiple Access (NOMA)
  • heterogeneous services
  • network slicing

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