Applying NOMA to NR V2X: A Graph-based Matching and Cooperative Game Approach

Zhang, Fenghui; Wang, Michael Mao; Chen, ShuaiShuai; Shan, Liqing; Xiao, Ming; Xu, Mingkai

doi:10.1109/vtc2021-spring51267.2021.9449051

Cited by 4 publications

(2 citation statements)

References 7 publications

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“…Using open-loop communication increased the reliability of the device's connection while decreasing latency. In [15], the authors improve the system sum capacity of the NOMA-integrated NR V2X system via a two-phase approach. The first phase provides a centralized graph-based sub-channel allocation for each vehicle group.…”

Section: Related Workmentioning

confidence: 99%

Socially-Aware V2X QoS for NOMA Dual-Connectivity

Kaliski

Han

2021

2021 IEEE 94th Vehicular Technology Conference (VTC2021-Fall)

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Vehicle-to-everything (V2X) is a core 5G technology. V2X and its enabler, Device-to-Device (D2D), are essential for the Internet of Things (IoT) and the Internet of Vehicles (IoV). V2X enables vehicles to communicate with other vehicles (V2V), networks (V2N), and infrastructure (V2I). While V2X enables ubiquitous vehicular connectivity, the impact of bursty data on the network's overall Quality of Service (QoS), such as when a vehicle accident occurs, is often ignored. In this work, we study both 4G and 5G V2X utilizing Evolved Universal Terrestrial Radio Access New Radio (E-UTRA-NR) and propose the use of socially aware 5G NR Dual Connectivity (en-DC 1 ) for traffic differentiation. We also propose localized QoS, wherein highpriority QoS flows traverse 5G road side units (RSUs) and normal-priority QoS flows traverse 4G Base Station (BS).We formulate a max-min fair QoS-aware Non-Orthogonal Multiple Access (NOMA) resource allocation scheme, QoS reclassify. QoS reclassify enables localized QoS and traffic steering to mitigate bursty network traffic's impact on the network's overall QoS. We then solve QoS reclassify via Integer Linear Programming (ILP) and derive its approximation. We demonstrate that both optimal and approximation QoS reclassify resource allocation schemes in our socially aware QoS management methodology outperform socially unaware legacy 4G V2X algorithms (no localized QoS support, no traffic steering) and socially aware 5G V2X (no localized QoS support, yet utilizes traffic steering). Our proposed QoS reclassify scheme's QoS flow end-to-end latency requires only ≈ 15% of the time legacy 4G V2X requires.

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Section: Related Workmentioning

confidence: 99%

Socially-Aware V2X QoS for NOMA Dual-Connectivity

Kaliski

Han

2021

2021 IEEE 94th Vehicular Technology Conference (VTC2021-Fall)

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“…NOMA benefitted from Power superposition technique to show its better performance compared to OMA, [3]. NOMA has also been applied in to 5G NR V2X through grouping of users in the manner to improve the spectral efficiency [4]. Research also employed Ergodic Rate criterion in to NOMA V2X context following a full duplex communication to reduce collisions and interference [5].…”

Section: Introductionmentioning

confidence: 99%

Improved Spectral Efficiency and Connectivity in RSMA based 5G V2X Systems

Chihi

Safdar

Bahja

2022

EAI Endorsed Trans Energy Web

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Vehicle to everything (V2X) faces several challenges including high data rate, low latency and stable connectivity requirements. Due to increased number of connected vehicles, Interference too appears to be a serious issue in V2X systems. Consequently, careful selection of multiple access techniques can lead to improved interference mitigation together with higher spectral efficiency and data rate. Vehicle mobility with growing traffic density is a demanding task that affects probability of vehicle connectivity, thereby resulting into requirement of sustained vehicle linkage for ongoing traffic safety. In this regard, our paper employs Rate Splitting Multiple Access (RSMA) technique, which considers change of both channel strength and direction for improved interference mitigation leading towards enhanced spectral efficiency. RSMA is optimized for weighted sum rate, further; it is integrated with mobility management to demonstrate sustained connectivity in the presence of increased traffic density. Presented results have been found promising, both in terms of spectral efficiency and stable connectivity. RSMA 5G V2X outperformed at higher Signal to noise ratio (SNR) values and on average achieved 25% better spectral efficiency compared to Non Orthogonal Multiple Access (NOMA) technique.

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Socially Aware V2X Localized QoS

Kaliski,

Han

2024

IEEE Internet Things J.

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Applying NOMA to NR V2X: A Graph-based Matching and Cooperative Game Approach

Cited by 4 publications

References 7 publications

Socially-Aware V2X QoS for NOMA Dual-Connectivity

Socially-Aware V2X QoS for NOMA Dual-Connectivity

Improved Spectral Efficiency and Connectivity in RSMA based 5G V2X Systems

Socially Aware V2X Localized QoS

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