2,052 Hits in 2.8 sec

Hybrid spectrum access for mmWave networks

Mattia Rebato, Federico Boccardi, Marco Mezzavilla, Sundeep Rangan, Michele Zorzi
2016 2016 Mediterranean Ad Hoc Networking Workshop (Med-Hoc-Net)  
Our preliminary results show that hybrid spectrum access is a promising approach for mmWave networks, and motivate further studies to achieve a more complete understanding of both technical and non technical  ...  In this paper, motivated by previous results where spectrum pooling was proved to be more feasible at high mmWave frequencies, we study the performance of a hybrid spectrum scheme where exclusive access  ...  of hybrid spectrum access for mmWave networks.  ... 
doi:10.1109/medhocnet.2016.7528417 dblp:conf/medhocnet/RebatoBMRZ16 fatcat:vrfgdk6scffvph6ei66yeukoei

Hybrid Spectrum Sharing in mmWave Cellular Networks

Mattia Rebato, Federico Boccardi, Marco Mezzavilla, Sundeep Rangan, Michele Zorzi
2017 IEEE Transactions on Cognitive Communications and Networking  
In this paper, we introduce a new hybrid spectrum access scheme for mmWave networks, where data is aggregated through two mmWave carriers with different characteristics.  ...  To the best of our knowledge, this is the first study proposing hybrid spectrum access for mmWave networks and providing a quantitative assessment of its benefits.  ...  The contribution of this paper: hybrid spectrum access for mmWave networks This paper extends the previous results in [1] , [14] and [28] to the case of hybrid spectrum allocation.  ... 
doi:10.1109/tccn.2017.2707551 fatcat:pzr5dngg3bei5lzllvx575cu6e

Hybrid multi-independent mmWave MNOs assessment utilising spectrum sharing paradigm for 5G networks

Mothana L. Attiah, A. A. Md Isa, Zahriladha Zakaria, M. K. Abdulhameed, Mowafak K. Mohsen, Ahmed M. Dinar
2019 TELKOMNIKA (Telecommunication Computing Electronics and Control)  
Therefore, in this paper, we proposed ultra-reliable and proportionally fair hybrid spectrum sharing access strategy that aims to address the aforementioned aspects as a function of coverage probability  ...  A typical user that belongs to certain operator has the right to occupy a part of the spectrum available in the high and low frequencies (28 and 73 GHz) based on an adaptive multi-state mmWave cell selection  ...  Acknowledgments The authors gratefully acknowledge UTeM Zamalah Scheme, Universiti Teknikal Malaysia Melaka (UTeM), and the Center for Research and Innovation Management (CRIM), Center of Excellence, Universiti  ... 
doi:10.12928/telkomnika.v17i3.11131 fatcat:rsbitm5jovc5lbixa2fzygpuym

A Comprehensive Survey on Millimeter Wave Communications for Fifth-Generation Wireless Networks: Feasibility and Challenges

Anthony Ngozichukwuka Uwaechia, Nor Muzlifah Mahyuddin
2020 IEEE Access  
Fifth-generation (5G) cellular networks will almost certainly operate in the high-bandwidth, underutilized millimeter-wave (mmWave) frequency spectrum, which offers the potentiality of highcapacity wireless  ...  Fifth, we extend the scope of the discussion by including multiple access technologies for mmWave systems such as non-orthogonal multiple access (NOMA) and space-division multiple access (SDMA), with limited  ...  The research on random access in hybrid analogdigital precoding and combining based mmWave cellular network is still at its infancy.  ... 
doi:10.1109/access.2020.2984204 fatcat:akymafkbcrevtejtgfywrkhcre

MAC Aspects of Millimeter-Wave Cellular Networks [chapter]

Hossein S. Ghadikolaei
2019 Wireless Mesh Networks - Security, Architectures and Protocols [Working Title]  
The current demands for extremely high data rate wireless services and the spectrum scarcity at the sub-6 GHz bands are forcefully motivating the use of the millimeter-wave (mmWave) frequencies.  ...  The chapter provides an integrated view on MAC layer issues for cellular networks and reviews the main challenges and trade-offs and the state-of-the-art proposals to address them.  ...  Reference [49] studied the performance of a hybrid spectrum scheme in which exclusive access is used at frequencies in the 20-30 GHz range while spectrum sharing (or even unlicensed spectrum) is used  ... 
doi:10.5772/intechopen.89075 fatcat:krv7bps3wrgyfa5knawl34xknq

Fronthauling for 5G LTE-U Ultra Dense Cloud Small Cell Networks [article]

Haijun Zhang, Yanjie Dong, Julian Cheng, Md. Jahangir Hossain, Victor C. M. Leung
2016 arXiv   pre-print
Ultra dense cloud small cell network (UDCSNet), which combines cloud computing and massive deployment of small cells, is a promising technology for the fifth-generation (5G) LTE-U mobile communications  ...  We survey the advantages and challenges for various candidate fronthaul technologies such as optical fiber, millimeter-wave based unlicensed spectrum, Wi-Fi based unlicensed spectrum, sub 6GHz based licensed  ...  The current spectrum for LTE cannot satisfy the requirement of ultra dense small cell networks. MmWave can be used for radio access and fronthauling in UDCSNet.  ... 
arXiv:1607.07015v1 fatcat:zxc3nbyc4rbf3bd7okz4j6yqxy

A Hybrid Interweave–Underlay Countrywide Millimeter-Wave Spectrum Access and Reuse Technique for CR Indoor Small Cells in 5G/6G Era

Rony Kumer Saha
2020 Sensors  
In this paper, we propose a hybrid interweave–underlay spectrum access and reuse technique for the dynamic spectrum access and reuse of the countrywide 28 GHz millimeter-wave (mmWave) spectrum to in-building  ...  For the spectrum access, the proposed technique explores both interweave and underlay spectrum access techniques, whereas, for the spectrum reuse, it considers reusing the countrywide spectrum to each  ...  Due to this, hybrid cognitive radio networks (CRNs), particularly hybrid interweave-underlay spectrum access, have been proposed as a means to improve the performance of SUs.  ... 
doi:10.3390/s20143979 pmid:32709008 fatcat:ardfj6kv7be2xckpdaaa64k7xe

Independence and Fairness Analysis of 5G mmWave Operators Utilizing Spectrum Sharing Approach

Mothana L. Attiah, A. A. M. Isa, Zahriladha Zakaria, M. K. Abdulhameed, Mowafak K. Mohsen, Ahmed M. Dinar
2019 Mobile Information Systems  
Various access models have been presented for adoption by four independent mobile network operators that incorporate three types of spectrum allocation (exclusive, semipooled, and fully pooled access).  ...  Therefore, in this paper, an analytical framework involving a flexible hybrid mmWave SSA is presented to assess the effectiveness of SSA and investigate its influence on network functionality in terms  ...  New assumptions are considered regarding the utilization of the hybrid mmWave spectrum sharing access (HMSSA) strategy, different path-loss models (commonly used in the literature), network planning, and  ... 
doi:10.1155/2019/4370847 fatcat:avvabkrb3faejorbdbgnjs3ko4

Computationally Intelligent Techniques for Resource Management in MmWave Small Cell Networks

Hamnah Munir, Haris Pervaiz, Syed Ali Hassan, Leila Musavian, Qiang Ni, Muhammad Ali Imran, Rahim Tafazolli
2018 IEEE wireless communications  
for all network entities.  ...  Ultra densification in heterogeneous networks (HetNets) and the advent of millimeter wave (mmWave) technology for fifth generation (5G) networks have led the researchers to redesign the existing resource  ...  ACKNOWLEDGMENT We would like to acknowledge the support of the University of Surrey 5GIC members for this work.  ... 
doi:10.1109/mwc.2018.1700400 fatcat:563lbionifcwnieu7l6yspbnqe

SDN Controlled mmWave Massive MIMO Hybrid Precoding for 5G Heterogeneous Mobile Systems

Na Chen, Songlin Sun, Michel Kadoch, Bo Rong
2016 Mobile Information Systems  
In 5G mobile network, millimeter wave (mmWave) and heterogeneous networks (Hetnets) are significant techniques to sustain coverage and spectral efficiency.  ...  In our proposed scheme, SDN controller is responsible for collecting the user channel state information (CSI) and applying hybrid precoding based on the calculated null-space of victim users.  ...  Millimeter wave is a promising technology for future 5G cellular networks. In core network, the mmWave system is expected to bring highcapacity wireless access networks in the future [24] .  ... 
doi:10.1155/2016/9767065 fatcat:dsnfs6non5fh5jqlnbwm4ntawi

Millimeter Wave Communications with OMA and NOMA Schemes for Future Communication Systems

This paper describes a detailed survey of mmWave communications with orthogonal multiple access (OMA), non-orthogonal multiple access (NOMA) schemes, physical design and security for future communication  ...  Various schemes such as small cells, heterogeneous network and hybrid beamforming are used to overcome interferences and highlight the prominence of mmWave in future communications systems.  ...  for mmWave wireless networks [46 -48] .  ... 
doi:10.35940/ijitee.l8001.1110120 fatcat:tpamshikhbbozoejwg22vrihze

Hybrid Direction of Arrival Precoding for Multiple Unmanned Aerial Vehicles Aided Non-Orthogonal Multiple Access in 6G Networks

Laura Pierucci
2022 Applied Sciences  
We newly design the sum-rate maximization problem of the UAV-aided NOMA 6G network specifically for the uplink mmWave transmission.  ...  The present paper focuses on a multi-UAV network which supports an uplink (UL) NOMA cellular system. In particular, by operating in the mmWave band, hybrid beamforming architecture is adopted.  ...  In [17] , a beamspace MUSIC algorithm is used to estimate path directions for mmWave channel estimation problem showing that the hybrid precoding structure can avoid the spectrum ambiguity and maximize  ... 
doi:10.3390/app12020895 fatcat:a7jsekx2e5awddwydue5vct2ti

Resource Management in Future Millimeter Wave Small-Cell Networks: Joint PHY-MAC Layer Design

Jia Shi, Haris Pervaiz, Pei Xiao, Wei Liang, Zan Li, Zhiguo Ding
2019 IEEE Access  
This paper addresses the key functions and discusses the challenges for PHY layer and MAC layer design in mmWave small-cell networks, including mmWave antenna design, beamforming, initial access, radio  ...  Furthermore, the traditional design for the UHF networks cannot be directly used for future mmWave networks, which needs to be reshaped from the perspectives of fundamental objectives, various constraints  ...  Motivated to find a balance between performance and complexity, hybrid beamforming emerges as an another popular option for mmWave networks [14] .  ... 
doi:10.1109/access.2019.2920745 fatcat:5wd6br3gdbca7g2zt5lisafz6q

Millimeter Wave Communications for Future Mobile Networks [article]

Ming Xiao, Shahid Mumtaz, Yongming Huang, Linglong Dai, Yonghui Li, Michail Matthaiou, George K. Karagiannidis, Emil Björnson, Kai Yang, Chih Lin, Amitava Ghosh
2017 arXiv   pre-print
Finally, the progresses in the standardization and deployment of mmWave for mobile networks are discussed.  ...  After that, we provide an overview of the solution for multiple access and backhauling, followed by analysis of coverage and connectivity.  ...  wireless networks with mmWave small cell access and backhauling (MiWaves) (, and mmWave based mobile radio access network for fifth generation integrated communications (mmMAGIC  ... 
arXiv:1705.06072v1 fatcat:4rjfggr5dvbbfonotxcfrsqpvi

All Technologies Work Together for Good: A Glance to Future Mobile Networks [article]

Animesh Yadav, Octavia A. Dobre
2018 arXiv   pre-print
, carrier aggregation, cognitive radio, and network ultra-densification.  ...  requirements of 5G have motivated researchers to investigate the feasibility of many potential technologies, such as massive multiple-input multiple-output, millimeter wave, full-duplex, non-orthogonal multiple access  ...  to the primary networks; ii) cooperative-inspired radio access, where the primary networks allow spectrum sharing, trading, and leasing to the secondary networks with some economic favor.  ... 
arXiv:1804.05963v1 fatcat:dfsdpptjxzchzbbpjolfqiikhu
« Previous Showing results 1 — 15 out of 2,052 results