Recent Activities of 5G Experimental Trials on Massive MIMO Technologies and 5G System Trials Toward New Services Creation

Okumura, Yukihiko; Suyama, Satoshi; Mashino, Jun; Muraoka, Kazuyuki

doi:10.1587/transcom.2018tti0002

Cited by 23 publications

(8 citation statements)

References 40 publications

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“…A 6G national project is expected to start in 2021 ( Kim et al, 2020 ). Trials are ongoing for other innovative services, in particular for autonomous driving, smart factories, 5G media, public safety, and smart cities ( Okumura et al 2019 ). In addition, China has a leading global role in 5G technologies, with some innovative applications in smart cities and connected cars ( Woyke, 2018 ), as well as medicine ( Li and Wang, 2019 ).…”

Section: Research Opportunitiesmentioning

confidence: 99%

How should we understand the digital economy in Asia? Critical assessment and research agenda

Kim

Lang

et al. 2020

Electronic Commerce Research and Applications

260

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Highlights The realization of the digital economy in the Asian nations is due to the need to revamp traditional business processes, extensive technology innovation, supportive government policies for economic growth, and the high capacity for digital entrepreneurship. Research opportunities may be related to the components of “digital economy and society index” (DESI) scores. New research directions are prompted by big data analytics, artificial intelligence (AI), platform economy, digital trade, fintech innovation, and societal and economic sustainability. The recent emergence of the COVID-19 pandemic around the world calls for addressing new research directions that could stay after the pandemic has ended.

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Section: Research Opportunitiesmentioning

confidence: 99%

How should we understand the digital economy in Asia? Critical assessment and research agenda

Kim

Lang

et al. 2020

Electronic Commerce Research and Applications

260

View full text Add to dashboard Cite

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“…The authors in [8] investigate the potential of massive MIMO in green communications. Large number of measurement campaigns have also been held for massive MIMO [9,10,11,12,13,14,15]. The authors in [9] provide a good overview of recent 5G experimental activities in massive MIMO.…”

Section: Related Work and Motivationmentioning

confidence: 99%

“…Large number of measurement campaigns have also been held for massive MIMO [9,10,11,12,13,14,15]. The authors in [9] provide a good overview of recent 5G experimental activities in massive MIMO. Some of the massive MIMO experimental campaigns include measurements on spectrum efficiency and capacity [10], channel to model channel matrix [11] and its characteristics [12], frequency-domain channel sounding [13], spectrum sensing in a cognitive radio-like network [14], channel hardening and user orthogonality in [15].…”

Section: Related Work and Motivationmentioning

confidence: 99%

Performance comparisons of FDD MIMO and 2.6 GHz TDD massive MIMO: An experimental analysis

Zeydan

Dedeoglu

Türk³

2021

Physical Communication

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Massive multiple-input multiple-output (MIMO) is considered as a breakthrough technology in 5G and beyond 5G systems. Some of its main advantages are providing high spectral efficiency to many users simultaneously in the same timefrequency blocks, strong directive signals towards short-range areas and little interference leaks. However, while massive MIMO exhibits interesting benefits, it is important to investigate its main gains through real deployment scenarios in an operator's infrastructure. In this paper, we focus on performance comparisons of traditional frequency-division duplex (FDD)-based MIMO and 2.6 GHz Time-division duplex (TDD)-based massive MIMO deployments through

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“…Fifth-generation (5G) mobile systems are being developed, notably in the third-generation partnership project (3GPP) standards body, and have been partially launched worldwide, and the 5G coverage area is gradually being expanded. The primary objectives of 5G are to increase system capacity and improve data rates, which is called enhanced mobile broadband (eMBB), and achieve ultra-reliable low latency communication (URLLC) while providing massive machine type communications (mMTC) based on the Internet of Things (IoT) [1][2][3][4][5].…”

Section: Introductionmentioning

confidence: 99%

Personal Picocell Scheme Using Adaptive Control CRE in Heterogeneous Mobile Networks

Fujisawa

Kemmochi

Otsuka

2020

JSAN

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Heterogeneous networks (HetNets), which are combined with a macrocell and picocell in the same coverage, are expected to further increase the system capacity in fifth-generation mobile systems and beyond. In HetNets, the cell range expansion (CRE) technique plays an important role and can allow more user equipment (UE) to access the picocell, i.e., virtually expand the picocell coverage. However, conventional CRE techniques that provide a fixed cell selection offset (CSO) for all UE may worsen user throughput if UE is forced to connect to the picocell because the received signal-to-interference plus noise ratio of the UE becomes lower. Therefore, we propose a personal picocell scheme using an adaptive control CRE technique to improve user throughput in which different CSOs are assigned to UE to form each optimal picocell for each UE. In this paper, we first describe the aspects and algorithm of the proposed scheme. Then, we show the user throughput for adaptive control CRE in comparison with conventional CRE by using system-level computer simulations for the two types of HetNets, i.e., single-band and multi-band HetNets. In the simulations, we first clarify the optimal parameters of the adaptive control CRE. We then show the average and 5-percentile user throughput of the optimized adaptive control CRE in comparison with that of conventional CRE. From these results, we confirmed that the personal picocell scheme using the adaptive control CRE can improve the 5-percentile user throughput while maintaining the average user throughput compared with that of conventional CRE.

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Recent Activities of 5G Experimental Trials on Massive MIMO Technologies and 5G System Trials Toward New Services Creation

Cited by 23 publications

References 40 publications

How should we understand the digital economy in Asia? Critical assessment and research agenda

How should we understand the digital economy in Asia? Critical assessment and research agenda

Performance comparisons of FDD MIMO and 2.6 GHz TDD massive MIMO: An experimental analysis

Personal Picocell Scheme Using Adaptive Control CRE in Heterogeneous Mobile Networks

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