Hybrid NOMA Offloading for Delay-Sensitive Applications in MEC-Based NB-IoT Networks

Liu, F; Wang, M; Liu, Y; Ni, W; Jamalipour, A

Hybrid NOMA Offloading for Delay-Sensitive Applications in MEC-Based NB-IoT Networks

Liu, F Wang, M Liu, Y Ni, W Jamalipour, A

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Publisher:: Institute of Electrical and Electronics Engineers (IEEE)
Publication Type:: Journal Article
Citation:: IEEE Internet of Things Journal, 2024, PP, (99), pp. 1-1
Issue Date:: 2024-01-01

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Field	Value	Language
dc.contributor.author	Liu, F
dc.contributor.author	Wang, M
dc.contributor.author	Liu, Y
dc.contributor.author	Ni, W
dc.contributor.author	Jamalipour, A
dc.date.accessioned	2025-01-28T08:48:40Z
dc.date.available	2025-01-28T08:48:40Z
dc.date.issued	2024-01-01
dc.identifier.citation	IEEE Internet of Things Journal, 2024, PP, (99), pp. 1-1
dc.identifier.issn	2372-2541
dc.identifier.issn	2327-4662
dc.identifier.uri	http://hdl.handle.net/10453/184477
dc.description.abstract	Data traffic has grown exponentially with the rapid development of narrowband Internet of Things (NB-IoT) technology. Non-orthogonal multiple access (NOMA) and mobile edge computing (MEC) are essential technologies to enhance the performance of NB-IoT networks. This paper proposes a new hybrid NOMA offloading strategy, allowing an IoT device to execute NOMA with other devices at different periods until the task offloading is completed. An optimization problem is established to minimize the overall offloading delay. To find the solution to the problem, we first use the proposed offloading strategy to determine the pairing method and offloading order of the IoT devices. Then, we transform the delay optimization problem into the link rate maximization problem. Finally, the closed-form solution of the optimal power allocation scheme for each IoT device is derived according to the theoretical analysis and the Karush-Kuhn-Tucker (KKT) condition. The simulation results show that the proposed offloading strategy and power allocation scheme effectively reduce the overall offloading delay under different device numbers and data lengths, which exceeds the orthogonal multiple access (OMA) schemes, the pure NOMA scheme, and the iterative multi-user NOMA scheme in lowering offloading delay
dc.language	en
dc.publisher	Institute of Electrical and Electronics Engineers (IEEE)
dc.relation.ispartof	IEEE Internet of Things Journal
dc.relation.isbasedon	10.1109/JIOT.2024.3487800
dc.rights	info:eu-repo/semantics/closedAccess
dc.subject	0805 Distributed Computing, 1005 Communications Technologies
dc.subject.classification	40 Engineering
dc.subject.classification	46 Information and computing sciences
dc.title	Hybrid NOMA Offloading for Delay-Sensitive Applications in MEC-Based NB-IoT Networks
dc.type	Journal Article
utslib.citation.volume	PP
utslib.for	0805 Distributed Computing
utslib.for	1005 Communications Technologies
utslib.copyright.status	closed_access	*
dc.date.updated	2025-01-28T08:48:39Z
pubs.issue	99
pubs.publication-status	Published
pubs.volume	PP
utslib.citation.issue	99

Abstract:

Data traffic has grown exponentially with the rapid development of narrowband Internet of Things (NB-IoT) technology. Non-orthogonal multiple access (NOMA) and mobile edge computing (MEC) are essential technologies to enhance the performance of NB-IoT networks. This paper proposes a new hybrid NOMA offloading strategy, allowing an IoT device to execute NOMA with other devices at different periods until the task offloading is completed. An optimization problem is established to minimize the overall offloading delay. To find the solution to the problem, we first use the proposed offloading strategy to determine the pairing method and offloading order of the IoT devices. Then, we transform the delay optimization problem into the link rate maximization problem. Finally, the closed-form solution of the optimal power allocation scheme for each IoT device is derived according to the theoretical analysis and the Karush-Kuhn-Tucker (KKT) condition. The simulation results show that the proposed offloading strategy and power allocation scheme effectively reduce the overall offloading delay under different device numbers and data lengths, which exceeds the orthogonal multiple access (OMA) schemes, the pure NOMA scheme, and the iterative multi-user NOMA scheme in lowering offloading delay

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http://hdl.handle.net/10453/184477