The Experts below are selected from a list of 68784 Experts worldwide ranked by ideXlab platform
Akihiro Otaka - One of the best experts on this subject based on the ideXlab platform.
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Optical Access Network technologies for future radio Access Networks
2017 IEEE Photonics Society Summer Topical Meeting Series (SUM), 2017Co-Authors: Jun Terada, Tatsuya Shimada, Akihiro OtakaAbstract:This paper describes optical Access Network technologies that support future radio Access Networks. Packet-based BBU is expected to accommodate multiple services and PON with low-latency scheme is a promising candidate to for MFH transmission in future radio Access Networks.
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Solutions for Future Mobile Fronthaul and Access-Network Convergence
Journal of Lightwave Technology, 2017Co-Authors: Jun-ichi Kani, Jun Terada, Ken-ichi Suzuki, Akihiro OtakaAbstract:The trend in broadband Access services is shifting from the fixed to the mobile. Accordingly, the role of the optical Access Network systems is changing from the fiber-to-the-home/fiber-to-the-building infrastructure to a common Access platform that supports both the fixed and mobile broadband services. It is expected that various virtual Network operators will provide a variety of services on the common platform. In particular, the mobile fronthaul (MFH) using optical Access is becoming more important in terms of supporting the massive deployment of small cells given the continuous speed increase in mobile Access. This paper first reviews and discusses solutions for future MFH Networks to address several issues in the evolution of the radio Access Network. It next discusses Access-Network convergence for the fixed and mobile services, and describes technologies and an architecture to realize this convergence. The overall motivation of these works is to reduce the total cost of Access Network ownership.
Yonggang Wen - One of the best experts on this subject based on the ideXlab platform.
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Cloud radio Access Network (C-RAN): A primer
IEEE Network, 2015Co-Authors: Jun Wu, Yu Hong, Zhifeng Zhang, Yonggang WenAbstract:In the era of mobile Internet, mobile operators are facing pressure on ever-increasing capital expenditures and operating expenses with much less growth of income. Cloud Radio Access Network (C-RAN) is expected to be a candidate of next generation Access Network techniques that can solve operators' puzzle. In this article, on the basis of a general survey of C-RAN, we present a novel logical structure of C-RAN that consists of a physical plane, a control plane, and a service plane. Compared to traditional architecture, the proposed C-RAN architecture emphasizes the notion of service cloud, service-oriented resource scheduling and management, thus it facilitates the utilization of new communication and computer techniques. With the extensive computation resource offered by the cloud platform, a coordinated user scheduling algorithm and parallel optimum precoding scheme are proposed, which can achieve better performance. The proposed scheme opens another door to design new algorithms matching well with C-RAN architecture, instead of only migrating existing algorithms from traditional architecture to C-RAN.
Eliane Bodanese - One of the best experts on this subject based on the ideXlab platform.
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Radio Access Network Selection in a Heterogeneous Communication Environment
2009 IEEE Wireless Communications and Networking Conference, 2009Co-Authors: Weizhi Luo, Eliane BodaneseAbstract:In recent years, a variety of wireless Network technologies have been developed and deployed, including UMTS, WiFi, and WiMAX. The overlapping of different Networks creates heterogeneous wireless environments, which can enable seamless communications, joint resource management and adaptive quality of service. In such environments, operators do not need to reject user requests, but redirect them to the most appropriate Networks. However, heterogeneous wireless systems still have many pending issues to solve. One of them is the selection of the most appropriate radio Access Network when receiving a service request. This paper addresses this issue by proposing an adaptive and efficient algorithm. The simulation results show that the proposed radio Access Network selection algorithm can improve the Network performance and capacity.
Jun-ichi Kani - One of the best experts on this subject based on the ideXlab platform.
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Solutions for Future Mobile Fronthaul and Access-Network Convergence
Journal of Lightwave Technology, 2017Co-Authors: Jun-ichi Kani, Jun Terada, Ken-ichi Suzuki, Akihiro OtakaAbstract:The trend in broadband Access services is shifting from the fixed to the mobile. Accordingly, the role of the optical Access Network systems is changing from the fiber-to-the-home/fiber-to-the-building infrastructure to a common Access platform that supports both the fixed and mobile broadband services. It is expected that various virtual Network operators will provide a variety of services on the common platform. In particular, the mobile fronthaul (MFH) using optical Access is becoming more important in terms of supporting the massive deployment of small cells given the continuous speed increase in mobile Access. This paper first reviews and discusses solutions for future MFH Networks to address several issues in the evolution of the radio Access Network. It next discusses Access-Network convergence for the fixed and mobile services, and describes technologies and an architecture to realize this convergence. The overall motivation of these works is to reduce the total cost of Access Network ownership.
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Solutions for future mobile fronthaul and Access-Network convergence
2016 Optical Fiber Communications Conference and Exhibition (OFC), 2016Co-Authors: Jun-ichi KaniAbstract:Presents a collection of slides covering the following topics: trend of broadband services; typical Network configuration; mobile communication evolution; current fronthaul solutions; IQ-data compression; fronthaul with WDM; massive MIMO; functional split; cooperation with PON; Access Network virtualization; coexistence scenario.
Ammar Bouallegue - One of the best experts on this subject based on the ideXlab platform.
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Design and characterization of WDM ring Access Network
2007 ICTON Mediterranean Winter Conference, 2007Co-Authors: Monia Najjar, Houria Rezig, Ammar BouallegueAbstract:In this paper we describe the technical issues of Access and metro Networks based on wavelength division multiplexing (WDM) technologies, some studies are done to precise the effect of different parameters over the quality of transmission by measuring the bit error ratio (BER). A WDM star Access Network with colorless optical Network units (ONUs) is a known model of Access Network. For realizing the colorless ONU, two approaches are introduced; optical carrier supply and spectrum slicing. In addition, a WDM metro ring Network with scalable optical add/drop multiplexers (OADMs), namely the tapped-type OADM, is proposed to effectively accommodate the large amount of traffic issued from Access Networks. Prototype is studied and analyzed to verify the efficiency of WDM technologies in such Access Networks.
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Design and characterization of WDM ring Access Network
ICTON-MW'07 - International Conference on Transparent Optical Networks "Mediterranean Winter" 2007 - Conference Proceedings, 2007Co-Authors: Monia Najjar, Houria Rezig, Ammar BouallegueAbstract:In this paper we describe the technical issues of Access and metro Networks based on wavelength division multiplexing (WDM) technologies, some studies are don to precise the effect of different parameters over the quality of transmission by measuring the bit error ratio (BER). A WDM star Access Network with colorless optical Network units (ONUs) is a known model of Access Network. For realizing the colorless ONU, two approaches are introduced; optical carrier supply and spectrum slicing. In addition, a WDM metro ring Network with scalable optical add/drop multiplexers (OADMs), namely the tapped-type OADM, is proposed to effectively accommodate the large amount of traffic issued from Access Networks. Prototype is studied and analyzed to verify the efficiency of WDM technologies in such Access Networks. © 2007 IEEE.
