Spectrum for 5G: Global Status, Challenges, and Enabling Technologies

Lee, Juho; Tejedor, Erika; Ranta‐Aho, Karri; Hu, Wang; Lee, Kyung-Tak; Semaan, Eliane; Mohyeldin, E.; Song, Juyeon; Bergljung, C.; Jung, Sangyeob

doi:10.1109/mcom.2018.1700818

Cited by 217 publications

(88 citation statements)

References 3 publications

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“…The exponential growth of wireless data services along with the spectrum shortage motivate the investigation of next-generation cellular networks. In order to address the demand for increased network throughput, next-generation cellular networks will have to combine several innovative techniques, such as full-duplex (FD) radio [1], [2], millimeter wave (mmWave) communications [3], [4] and heterogeneous networks [1]. FD is a well investigated technology which could potentially double the spectral efficiency with respect to the half-duplex (HD) counterpart, as it employs simultaneous transmission and reception using non-orthogonal channels [5].…”

Section: Introductionmentioning

confidence: 99%

Heterogeneous FD-mm-Wave Cellular Networks With Cell Center/Edge Users

Skouroumounis¹,

Psomas²,

Krikidis³

2019

IEEE Trans. Commun.

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In this paper, we assess the effect of full-duplex (FD) radio in the context of millimeter-wave (mmWave) communications. Particularly, we propose an analytical framework, based on stochastic geometry, to evaluate the performance of heterogeneous FD-mmWave cellular networks for two user location-based classifications, namely cell-center users (CCUs) and cell-edge users (CEUs). Moreover, we evaluate the performance of the considered networks with successive interference cancellation (SIC) capabilities. Based on the proposed framework, analytical expressions for the coverage and sum-rate performance are derived. We investigate the impact of FD-mmWave communications on the network performance of CCUs/CEUs and quantify the associated performance gains under different network parameter settings. Our results demonstrate the beneficial combination of FD radio with heterogeneous mmWave cellular networks, since it increases the spectral efficiency but also alleviates the effects of the multi-user interference. Furthermore, we present the trade-off between the coverage and sum-rate performance of heterogeneous FD-mmWave cellular networks for the considered user classifications. The results show that half-duplex mode is beneficial for the CEUs to achieve better network performance, as opposed to the CCUs for which FD mode is more efficient. Finally, we show the effectiveness of SIC on the network performance, with significant performance gains for the CEUs. Index TermsFull-duplex, heterogeneous networks, millimeter-wave, successive interference cancellation, stochastic geometry.Christodoulos Skouroumounis, Constantinos Psomas and Ioannis Krikidis are with the communications due to its abundant spectrum resources, which can lead to multi-Gbps rates [14]. As a result of their unique features such as directivity, sensitivity to blockages, and higher path losses, mmWave communications have fundamental differences with the current sub-6 GHz communications [14]. Due to these differences, the unique features of mmWave communications are required to be considered in the design of network architectures and protocols to fully exploit the potentials of mmWave communications. Network densification is proposed to address the large path-loss attenuation of mmWave frequencies, by bringing the transmitter closer to the receiver. This results in increased reliability, improved spectrum efficiency, and increased network capacity. Another important technique to compensate the large path-loss attenuation is the employment of directional antennas, which becomes feasible due to the short wavelength of mmWave signals. In addition to the difficulties caused by the unique features of the mmWave signals, recent studies have shown that these features also cause a positive effect on the network performance, which is the mitigation of the overall interference [15], [16], [18], [19]. Thus, the co-design of FD radio and mmWave networks is of critical importance in order to combat the severe multi-user interference caused by the FD technology by exploiting...

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Section: Introductionmentioning

confidence: 99%

Heterogeneous FD-mm-Wave Cellular Networks With Cell Center/Edge Users

Skouroumounis¹,

Psomas²,

Krikidis³

2019

IEEE Trans. Commun.

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“…Because the bandwidth is a scarce resource at the current frequency bands under 6 GHz it is decided to implement the 5G mm-wave system in the mm-wave frequency spectrum (Rappaport et al 2013). Currently, eleven candidate bands in the range between 24.25 GHz and 86 GHz have been considered for the 5G mm-wave communication system (Lee et al 2018). To combat the high path loss expected at the mm-wave frequencies antennas with the gain higher than 7 dBi at both mobile and base stations.…”

Section: Introductionmentioning

confidence: 99%

Dual-polarized Dual-band Mobile 5G Antenna Array

Syrytsin

Zhang

Pedersen

2018

Proceedings of the 15th International Joint Conference on E-Business and Telecommunications

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In this paper, a dual-band dual-polarized phased antenna array for 5G mobile terminals is proposed. The array has a bandwidth of 3.6 GHz and two resonances at 30.5 and 32.8 GHz. The array has a clearance of 2.85 mm and fed with two ports in simulation to excite the notch and dipole parts of the proposed antenna structure. Finally, the proposed antenna element is combined into two arrays with different configurations. It is shown that it is better to use the array of 8 elements than to use two 4-element sub-arrays with orthogonal orientation.

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“…Vol. 25(4), https://doi.org/10.1061/(ASCE)IS.1943-555X.0000507" 5.5-10 kilo-meters or 3.5-6 miles (with no line of sight) Table 2 shows that different wireless communication options have different single-hop latency, range, and allocated spectrum (Chintapalli et al 2013, de Carvalho et al 2017, Ghadialy 2015, Hpbn 2018, Lee et al 2018, Odiaga et al 2016, Remy and Letamendia 2014, Shabbir and Kasif 2018, Zhou et al 2009). Because of the different strengths and weaknesses of the different technologies, it is recommended that a realworld connected TCPS make use of a heterogeneous network which can support multiple applications at the same time (Siegel et al 2018).…”

Section: Research On CV Communication and Computing Infrastructure Comentioning

confidence: 99%

Synergizing Roadway Infrastructure Investment with Digital Infrastructure for Infrastructure-Based Connected Vehicle Applications: Review of Current Status and Future Directions

Khan

Chowdhury

Morris

et al. 2019

J. Infrastruct. Syst.

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The safety, mobility, environmental, energy, and economic benefits of transportation systems, which are the focus of recent Connected Vehicles (CVs) programs, are potentially dramatic. However, realization of these benefits largely hinges on the timely integration of the digital technology into the existing transportation infrastructure. CVs must be enabled to broadcast and receive data to and from other CVs (Vehicle-to-Vehicle, or V2V, communication), to and from infrastructure or V2I, communication) and to and from other road users, such as bicyclists or pedestrians (Vehicle-to-Other road users communication). Further, for V2I-focused applications, the infrastructure and the transportation agencies that manage it must be able to collect, process, distribute, and archive these data quickly, reliably, and securely. This paper focuses V2I applications, and studies current digital roadway infrastructure initiatives. It highlights the importance of including digital infrastructure investment alongside investment in more traditional transportation infrastructure to keep up with the auto industry's push towards connecting vehicles to other vehicles. By studying the current CV testbeds and Smart City initiatives, this paper identifies digital infrastructure components (i.e., communication options and computing infrastructure) being used by public agencies. It also examines public agencies' limited budgeting for digital infrastructure, and finds current expenditure is inadequate for realizing the potential benefits of V2I applications. Finally, the paper presents a set of recommendations, based on a review of current practices and future needs, designed to guide agencies responsible for transportation infrastructure. It stresses the importance of collaboration for establishing national and international platforms for the planning, deployment, and management of digital infrastructure to support connected transportation systems across political jurisdictions. potential for vehicles to "talk" to each other (via Vehicle-to-Vehicle communication, or V2V), to pedestrians (via Vehicle-to-Pedestrian communication, or V2P) as well as to transportation infrastructure (via Vehicle-to-Infrastructure communication, or V2I). Potential benefits from real-time communication between the elements of the transportation system are dramatic (Chang et al., 2015, He et al., 2012. For example, Connected Vehicles, or CVs (also referred to as "Vehicles with Connectivity"), which broadcast their data to infrastructure and other vehicles, could give drivers advance warning of impending collisions in time to avert dangerous circumstances, dramatically reducing crash damage, injuries, and fatalities. V2I connectivity between vehicles and "digital roadways," which feature roadside devices and backend computation infrastructure, could ensure safe and efficient traffic management in real time, which is not present on public roads today. CVs can benefit the environment with 9,400 tons of annual emission savings for an area covering 45 kilo-meters (28...

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Spectrum for 5G: Global Status, Challenges, and Enabling Technologies

Cited by 217 publications

References 3 publications

Heterogeneous FD-mm-Wave Cellular Networks With Cell Center/Edge Users

Heterogeneous FD-mm-Wave Cellular Networks With Cell Center/Edge Users

Dual-polarized Dual-band Mobile 5G Antenna Array

Synergizing Roadway Infrastructure Investment with Digital Infrastructure for Infrastructure-Based Connected Vehicle Applications: Review of Current Status and Future Directions

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