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Online Backoff Control for NOMA-Enabled Random Access Procedure for Cellular Networks

Authors
Seo, Jun-BaeJung, Bang ChulJin, Hu
Issue Date
Jun-2021
Publisher
Institute of Electrical and Electronics Engineers Inc.
Keywords
No-northogonal multiple access; online control; random access procedure
Citation
IEEE Wireless Communications Letters, v.10, no.6, pp 1158 - 1162
Pages
5
Indexed
SCIE
SCOPUS
Journal Title
IEEE Wireless Communications Letters
Volume
10
Number
6
Start Page
1158
End Page
1162
URI
https://scholarworks.bwise.kr/erica/handle/2021.sw.erica/118792
DOI
10.1109/LWC.2021.3058254
ISSN
2162-2337
2162-2345
Abstract
Uplink power domain non-orthogonal multiple access (NOMA) random access (RA) system allows users to transmit their packet with one of target receive power (TRP) levels at the base station (BS). Then the BS can separate the users in simultaneous transmission with successive interference cancellation (SIC), when the users choose different TRP levels. It enjoys a higher throughput through supporting simultaneous transmissions that occur frequently in RA system. This letter examines how to incorporate uplink NOMA RA system with the existing Long-Term Evolution (LTE) RA procedure with minimal modifications. Furthermore, to optimize the proposed RA procedure, we propose an online control algorithm for backoff interval and analyze its performance particularly with focus on the average RA delay. The results show that the proposed RA procedure achieves 0.5896{L} of throughput for a total of {L} RA preambles and guarantees the average RA delay by 1/( 0.5896{L} -lambda ) for Poisson traffic with mean lambda . © 2012 IEEE.
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ERICA 공학대학 (SCHOOL OF ELECTRICAL ENGINEERING)
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