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Communications Magazine, IEEE

Issue 2 • Date February 2013

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Displaying Results 1 - 25 of 34
  • IEEE Communications Magazine - Front cover

    Publication Year: 2013 , Page(s): c1
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  • Table of contents

    Publication Year: 2013 , Page(s): 2 - 4
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  • Plus ca change, plus c'est la meme chose [The President's Page]

    Publication Year: 2013 , Page(s): 6
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  • The 2013 Candidate's Handbook [Certification Corner]

    Publication Year: 2013 , Page(s): 7
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  • New products in wireless testing

    Publication Year: 2013 , Page(s): 8
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  • A history of computer networking and the internet in Korea [History of Communications]

    Publication Year: 2013 , Page(s): 10 - 15
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (335 KB) |  | HTML iconHTML  

    This paper briefly describes Internet development in the Republic of Korea (South Korea), which started research and development on computer networking in the late 1970s. Korea became one of the first countries to deploy the Internet in 1982 [1], and organized one of the first global Internet conferences in 1985 [2]. In the late 1990s, Korea put much effort into development of broadband networks, starting from a master plan in 1995. Korea became a world leader with widely available wired and wireless broadband networks. Korea also led in Internet applications including online games, search engines and social networking services. As one of the earlier Internet countries, Korea has been vulnerable to newly arising problems on the Internet such as cybersecurity, net abuse and game addiction. Korea has been trying to solve these problems in collaboration with other leading countries. Korea has also shared its Internet experience with other countries, in particular with developing countries. A book is in preparation on the early history of the Internet in Korea [3] together with another, co-authored with Internet pioneers in other countries, on the early history of the Internet in Asia. View full abstract»

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  • IEEE GLOBECOM 2012 explores the "the magic of global connectivity" at the Disneyland Hotel in Anaheim, California [Conference Review]

    Publication Year: 2013 , Page(s): 16 - 19
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  • IEEE WCNC 2013 opens registration for leading wireless & networking event to be held 7 – 10 April 2013 in Shanghai, China [Conference Preview]

    Publication Year: 2013 , Page(s): 20
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  • Global Communications Newsletter

    Publication Year: 2013 , Page(s): 1 - 4
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  • IEEE Communications Magazine - Special Supplement

    Publication Year: 2013 , Page(s): S1
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  • Table of contents - Supplement

    Publication Year: 2013 , Page(s): S2
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  • OFC/NFOEC 2013: the future of optical communications [Conference Preview]

    Publication Year: 2013 , Page(s): S4
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  • Optical access networks [Series Editorial]

    Publication Year: 2013 , Page(s): S6 - S7
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  • Fiber plant manager: an OTDR- and OTM-based PON monitoring system

    Publication Year: 2013 , Page(s): S9 - S15
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (206 KB) |  | HTML iconHTML  

    Wider deployment of fiber in the last mile is driven by increased customer needs for high capacity communication. This deployment requires solutions that reduce the operators' OPEX. A cost-efficient fully reliable and accurate monitoring solution supporting fault detection, identification, and localization in different fiber access topologies will be a key part of such solutions. In this article, we discuss practical requirements for a successful PON monitoring technique followed by an overview of published proposals. We also present a method to monitor power-splitter- and wavelength-splitter-based PON, through combined techniques of OTDR and OTM. The method is non-invasive to data traffic flow and requires no additional functionality (hardware or software) at the ONT side. The description of the overall architecture and components is followed by measurement results. View full abstract»

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  • Saving energy in long-reach broadband access networks: architectural approaches

    Publication Year: 2013 , Page(s): S16 - S21
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (634 KB) |  | HTML iconHTML  

    While energy conservation and reach-extension technologies are being developed for broadband access networks, this article focuses on the intersection between these two topics. Specifically, it reviews several architectural enhancements that can enable energy conservation in longreach broadband access networks using methods such as turning off idle transceivers and other network elements, shedding transmission speed, and adaptively reconfiguring itself based on current traffic characteristics. View full abstract»

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  • Energy-efficient optical access networks: issues and technologies

    Publication Year: 2013 , Page(s): S22 - S26
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (217 KB) |  | HTML iconHTML  

    This article discusses and clarifies the issues and technologies for the next-generation energy efficient optical access network from the viewpoints of its mid-term upgrade and long-term evolution. For reducing the total power consumption in the mid-term upgrade to 10-gigabit access, it is necessary to optimize the network configuration as well as the usage of various technologies while avoiding any service degradation in the next-generation broadband services. In the long-term evolution, wavelength routing will play a key role by drastically decreasing the total power consumption of the access network. View full abstract»

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  • Exploiting PONs for mobile backhaul

    Publication Year: 2013 , Page(s): S27 - S34
    Cited by:  Papers (7)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (268 KB) |  | HTML iconHTML  

    The growing popularity of mobile data services necessitates a rapid rise in network capacity not only on the air interface to the end user, but also in the backhaul network. The latter is quite important for the mobile operator business model, affecting capital investment, operational expenses, service deployment, and customer experience. Fiber infrastructure is inevitably the only long-term solution, and the deployment of passive optical networks presents an opportunity for a cost-effective, scalable, and future-proof solution. In this article we investigate the use of PONs for mobile backhaul and propose a resource allocation framework building on the efficiency of PONs to share resources, dynamically allocate bandwidth in real time, and enhance efficiency by improved statistical multiplexing. The main objective of this work is to exploit existing standardized technologies, and provide design and deployment guidelines regarding PON MAC operation, enabling a gradual and future-safe infrastructure upgrade of mobile backhaul systems. View full abstract»

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  • Efficient inter-thread scheduling scheme for long-reach passive optical networks

    Publication Year: 2013 , Page(s): S35 - S43
    Cited by:  Papers (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (281 KB) |  | HTML iconHTML  

    These days there is a clear trend toward extending the reach of passive optical networks to cover large geographical areas, which enables reduction of the number of central offices and hence has the potential of cost saving in network operation. On the other hand, this reach extension necessitates the design of efficient dynamic bandwidth allocation schemes in order to tackle performance degradation caused by the increased propagation delay in long reach PONs. Among many existing approaches, the multithread-based DBA scheme where several bandwidth allocation processes are performed in parallel is considered one of the most effective options to improve network performance in LRPONs. We have found that without proper intercommunication between the overlapped threads, multi-thread DBA may lose efficiency and even perform worse than the conventional singlethread algorithm. With this in mind, this article reviews different inter-thread scheduling schemes for LR-PONs, and proposes a novel approach of integrating the key ideas of the existing ones. Extensive simulation results confirm that our proposed scheme can significantly improve DBA performance for LR-PONs under a variety of scenarios with consideration of different values of network load and reach. View full abstract»

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  • Evolution of 3GPP LTE in Release 11 and beyond [Guest Editorial]

    Publication Year: 2013 , Page(s): 73
    Cited by:  Papers (1)
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  • A Lean Carrier for LTE

    Publication Year: 2013 , Page(s): 74 - 80
    Cited by:  Papers (6)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (1364 KB) |  | HTML iconHTML  

    The next major step in the evolution of LTE targets the rapidly increasing demand for mobile broadband services and traffic volumes. One of the key technologies is a new carrier type, referred to in this article as a Lean Carrier, an LTE carrier with minimized control channel overhead and cell-specific reference signals. The Lean Carrier can enhance spectral efficiency, increase spectrum flexibility, and reduce energy consumption. This article provides an overview of the motivations and main use cases of the Lean Carrier. Technical challenges are highlighted, and design options are discussed; finally, a performance evaluation quantifies the benefits of the Lean Carrier. View full abstract»

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  • Enhanced physical downlink control channel in LTE advanced Release 11

    Publication Year: 2013 , Page(s): 82 - 89
    Cited by:  Papers (4)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (279 KB) |  | HTML iconHTML  

    As the capacity and performance of the LTE data channels are progressively improved, the downlink control channels can potentially become the bottleneck. To address this issue, an enhanced physical downlink control channel (EPDCCH) has been introduced in 3GPP LTE Release 11. The design goals of the EPDCCH include the ability to support increased downlink control channel capacity, beamforming and improved spatial reuse, and frequency-domain intercell interference coordination, while taking into account the coexistence with legacy terminals. This article explains the principles and considerations behind the EPDCCH design in Release 11, and describes the corresponding specification support. View full abstract»

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  • Energy impact of emerging mobile internet applications on LTE networks: issues and solutions

    Publication Year: 2013 , Page(s): 90 - 97
    Cited by:  Papers (12)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (232 KB) |  | HTML iconHTML  

    Mobile Internet applications run on devices such as smartphones and tablets, and have dramatically changed the landscape of applicationgenerated network traffic. The potent combination of millions of such applications and the instant accessibility of high-speed Internet on mobile devices through 3G and now LTE technology has also changed how users themselves interact with the Internet. Specifically, the radio states in LTE such as RRC_Connected and RRC_Idle were designed with more traditional applications such as web browsing and FTP in mind. These traditional applications typically generated traffic only during Active (Connected) state, and once the user session ended, usually the traffic ended too, thus allowing the radio to move to Inactive (Idle) state. However, newer applications such as Facebook and Twitter generate a constant stream of autonomous and/or user generated traffic at all times, thus erasing the previously clear demarcation between Active and Inactive states. This means a given mobile device (or user equipment, in LTE parlance) often ends up moving between Connected and Idle states frequently to send mostly short bursts of data, draining device battery and causing excessive signaling overhead in LTE networks. This problem has grown and attracted the research community's attention to address the negative effects of frequent back and forth transitions between LTE radio states. In this article, we first explore the traffic characteristics of these emerging mobile Internet applications and how they differ from more traditional applications. We investigate their impact on LTE device power and air interface signaling. We then present a survey of state-of-the-art solutions proposed in literature to address the problems, and analyze their merits and demerits. Lastly, we discuss the solutions adopted by 3GPP including the latest developments in Release 11 to handle these issues, and present potential future research directions in this field. View full abstract»

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  • Trends in small cell enhancements in LTE advanced

    Publication Year: 2013 , Page(s): 98 - 105
    Cited by:  Papers (44)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (196 KB) |  | HTML iconHTML  

    3GPP LTE, or Long Term Evolution, the fourth generation wireless access technology, is being rolled out by many operators worldwide. Since LTE Release 10, network densification using small cells has been an important evolution direction in 3GPP to provide the necessary means to accommodate the anticipated huge traffic growth, especially for hotspot areas. Recently, LTE Release 12 has been started with more focus on small cell enhancements. This article provides the design principles and introduces the ongoing discussions on small cell enhancements in LTE Release 12, and provides views from two active operators in this area, CMCC and NTT DOCOMO. View full abstract»

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  • LTE for public safety networks

    Publication Year: 2013 , Page(s): 106 - 112
    Cited by:  Papers (22)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (419 KB) |  | HTML iconHTML  

    It is increasingly being recognized that effective communications are key to a successful response to emergency and disaster situations. The ability of the first responder emergency services to communicate among themselves and to share multimedia information directly affects the ability to save lives. This is reflected in increasing public investment in broadband public safety communication systems. These systems have some specific requirements, which are outlined in this article. As LTE is expected to become the most widely deployed broadband communication technology, we examine the capability of LTE to meet these requirements, and identify possible future developments to LTE that could further enhance its ability to provide the necessary service. View full abstract»

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  • Software defined networks [Guest Editorial]

    Publication Year: 2013 , Page(s): 113
    Cited by:  Papers (1)
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Aims & Scope

IEEE Communications Magazine covers all areas of communications such as lightwave telecommunications, high-speed data communications, personal communications systems (PCS), ISDN, and more.

Full Aims & Scope

Meet Our Editors

Editor-in-Chief
Osman Gebizlioglu
Huawei Technologies