University of Oulu

Scalable coexistence of eMBB, URLLC and mMTC enabled by non-orthogonal multiple access and network slicing

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Author: Noboro Tominaga, Eduardo1
Organizations: 1University of Oulu, Faculty of Information Technology and Electrical Engineering, Communications Engineering
Format: ebook
Version: published version
Access: open
Online Access: PDF Full Text (PDF, 1.6 MB)
Pages: 54
Persistent link: http://urn.fi/URN:NBN:fi:oulu-202102241224
Language: English
Published: Oulu : E. Noboro Tominaga, 2021
Publish Date: 2021-02-24
Thesis type: Master's thesis (tech)
Tutor: Alves, Hirley
Reviewer: Alves, Hirley
Morais de Lima, Carlos
Description:

Abstract

The 5G systems feature three use cases: enhanced Mobile BroadBand (eMBB), massive Machine-Type Communications (mMTC) and Ultra-Reliable and Low-Latency Communications (URLLC). The diverse requirements of the corresponding services in terms of achievable data-rate, number of connected devices, latency and reliability can lead to sub-optimal use of the 5G resources, thus network slicing emerges as a promising alternative that customizes slices of the network specifically designed to meet specific requirements. By employing network slicing, the radio resources can be shared via orthogonal and non-orthogonal schemes. Motivated by the Industrial Internet of Things (IIoT) paradigm where a large number of sensors may require connectivity with stringent requirements of latency and reliability, we propose and evaluate the joint use of network slicing and Non-Orthogonal Multiple Access (NOMA) with Successive Interference Cancellation (SIC) in two different uplink scenarios. In the first scenario, eMBB coexists with URLLC in the same Radio Access Network (RAN) and, in order to improve the number of concurrent URLLC connections to the same base station (BS), they transmit simultaneously and across multiple frequency channels. In the second scenario, eMBB coexists with mMTC and, to provide connectivity to a massive number of devices, the BS has multiple receive antennas. In both cases, we set the reliability requirements for the services and compare the performance of both orthogonal and non-orthogonal network slicing schemes in terms of maximum achievable data rates and connected users. Our results show that, even with overlapping transmissions from multiple devices, network slicing, NOMA and SIC techniques allow us simultaneously satisfy all the heterogeneous requirements of the 5G services.

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Copyright information: © Eduardo Noboro Tominaga, 2021. This publication is copyrighted. You may download, display and print it for your own personal use. Commercial use is prohibited.