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A Framework of Non-Orthogonal Slotted Aloha (NOSA) Protocol for TDMA-Based Random Multiple Access in IoT-Oriented Satellite Networks

Wang, Qiwei, Ren, Guangliang, Gao, Steven, Wu, Kun (2018) A Framework of Non-Orthogonal Slotted Aloha (NOSA) Protocol for TDMA-Based Random Multiple Access in IoT-Oriented Satellite Networks. IEEE Access, 6 . pp. 77542-77553. ISSN 2169-3536. (doi:10.1109/ACCESS.2018.2883399) (KAR id:73257)

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https://doi.org/10.1109/ACCESS.2018.2883399

Abstract

There is an urgent demand for massive machine-type terminals to have access into time-division multiple access (TDMA)-based satellite networks by means of random multiple access (RMA). Several RMA protocols have been proposed by exploiting packet repetitions and interference cancellation to achieve high throughput. In this paper, a framework of non-orthogonal slotted aloha (NOSA) protocol is reported to achieve even higher throughput. With a specifically designed tile-based frame structure, it introduces the intra-tile sparse mapping as a special kind of pre-coded packet repetitions and exploits the joint multi-packet detection to blindly detect superimposed packets. By further employing inter-tile packet repetitions and interference cancellation, the NOSA protocol is able to achieve high throughput with affordable complexity while keeping the same transmission efficiency as and comparable power consumptions to available protocols. Simulation results show that the NOSA prototype has the potential in providing RMA for massive machine-type terminals in practical TDMA-based satellite networks.

Item Type: Article
DOI/Identification number: 10.1109/ACCESS.2018.2883399
Uncontrolled keywords: Non-orthogonal slotted aloha (NOSA), random multiple access (RMA), sparse code multiple access (SCMA), time division multiple access (TDMA)
Divisions: Divisions > Division of Computing, Engineering and Mathematical Sciences > School of Engineering and Digital Arts
Depositing User: Steven Gao
Date Deposited: 28 Mar 2019 16:15 UTC
Last Modified: 16 Feb 2021 14:03 UTC
Resource URI: https://kar.kent.ac.uk/id/eprint/73257 (The current URI for this page, for reference purposes)
Gao, Steven: https://orcid.org/0000-0002-7402-9223
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