Interference Hypergraph-Based Resource Allocation (IHG-RA) for NOMA-Integrated V2X Networks

Vehicular communication network is a core application scenario in the fifth generation (5G) mobile communication system which requires ultrahigh data rate and ultralow latency. Most recently, nonorthogonal multiple access (NOMA) has been regarded as a promising technique for future 5G systems due to...

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Bibliographic Details
Published inIEEE internet of things journal Vol. 6; no. 1; pp. 161 - 170
Main Authors Chen, Chen, Wang, Baoji, Zhang, Rongqing
Format Journal Article
LanguageEnglish
Published Piscataway IEEE 01.02.2019
The Institute of Electrical and Electronics Engineers, Inc. (IEEE)
Subjects
5G mobile communication
Algorithms
Coloring
Communication
Communications systems
Computer simulation
Data transmission
Device-to-device communication
Graph theory
Graphs
Interference
Interference hypergraph (IHG)
Internet of Things
Mobile communication systems
Networks
NOMA
Nonorthogonal multiple access
nonorthogonal multiple access (NOMA)
Resource allocation
Resource management
Reuse
Silicon carbide
vehicle-to-everything (V2X)
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Summary:Vehicular communication network is a core application scenario in the fifth generation (5G) mobile communication system which requires ultrahigh data rate and ultralow latency. Most recently, nonorthogonal multiple access (NOMA) has been regarded as a promising technique for future 5G systems due to its capability in significantly improving the spectral efficiency and reducing the data transmission latency. In this paper, we propose to introduce NOMA in device-to-device-enhanced vehicle-to-everything (V2X) networks, where resource sharing based on spatial reuse for different V2X communications are permitted through centralized resource management. Considering the complicated interference scenario caused by NOMA and spatial reuse-based resource sharing in the investigated NOMA-integrated V2X (NOMA-V2X) networks, we construct an interference hypergraph (IHG) to model the interference relationships among different communication groups. In addition, based on the constructed IHG, we further propose an IHG-based resource allocation (IHG-RA) scheme with cluster coloring algorithm, which can lead to both effective and efficient resource block assignment with low computational complexity. Simulation results verify the efficiency of our proposed IHG-RA scheme for NOMA-V2X communications in improving the network sum rate.
ISSN:2327-4662
2327-4662
DOI:10.1109/JIOT.2018.2875670