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Communications Magazine, IEEE

Issue 3 • Date March 2008

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Displaying Results 1 - 25 of 30
  • Front cover - IEEE Communications Magazine - Front cover

    Page(s): c1
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    Freely Available from IEEE
  • IEEE Communications Magazine - table of contents

    Page(s): 2 - 4
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    Freely Available from IEEE
  • Publications - polishing ComSoc's crown jewels [the president's page]

    Page(s): 6 - 7
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    Freely Available from IEEE
  • Catering to the engineering practitioners [from the editor-in-chief]

    Page(s): 8
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    Freely Available from IEEE
  • Nom 2.0: innovative network operations and management for business agility

    Page(s): 10 - 16
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (606 KB) |  | HTML iconHTML  

    Faced with growing fierce competitive pressure on all fronts and market saturation, traditional telecommunication operators are now struggling to find the breakthrough approach by which they may successfully reshape their role from network service providers to multimedia service providers. They are re-examining their voice-centric business models and deploying next-generation networks (NGN) for QoS-guaranteed delivery of multimedia quadruple play services (QPSs). To cost effectively realize these paradigm shifts, the existing ";stability-oriented"; network operations and management infrastructure and processes should be migrated into ";service-oriented"; and ";business-driven"; network operations and management within the context of today's multimedia and converged business environments. In this article, I'd like to introduce Network Operations and Management 2.0 (NOM 2.0), which is an innovative next generation operations and management paradigm for telephone company business agility and customer value creation. KT recently proposed Telco 2.0 [1], a new role and business model in the IP world to create customer value. NOM 2.0 is a key component needed to realize the Telco 2.0 goals. Telcos need to transform their operations and management framework into a human-centric and highly intelligent and automated one, and become the market leader by providing an agile operation and management framework within ever-changing operations and business environments. I will describe what NOM 2.0 is and how it is being realized in my company, KT. View full abstract»

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  • Certification: developed through volunteer efforts [certification corner]

    Page(s): 18
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  • Reviews of [( "Security for Mobile Networks and Platforms", Aissi, S., et al) and (Cooperation in Wireless Networks: Principles and Applications, Fitzek, H.P. and Katz, M.D., Eds.; 2006)]

    Page(s): 20 - 22
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    Two books are reviewed in this column: Security for Mobile Networks and Platforms (S. Aissi et al.; 2006) and Cooperation in Wireless Networks: Principles and Applications (H.P. Fitzek and M.D. Katz, Eds.; 2006). View full abstract»

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  • Web 2.0 is here and ready for use

    Page(s): 24
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    Web 2.0 is still a technology in progress, nonetheless it is a collection of numerous useful and popular technologies, including blogs, wikis, tags, mashups, RSS feeds, etc. View full abstract»

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  • Conference calendar

    Page(s): 26 - 28
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  • New products

    Page(s): 30
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    Freely Available from IEEE
  • Product spotlights [advertisement]

    Page(s): 31
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    Freely Available from IEEE
  • IEEE radio communications - components, systems, and networks [Guest Editorial]

    Page(s): 32
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    The three articles in this issue cover several aspects of radio communication. They are summarized here. View full abstract»

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  • OFCDM: a promising broadband wireless access technique

    Page(s): 38 - 49
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (178 KB) |  | HTML iconHTML  

    Future mobile communication systems aim to provide extremely high-speed data transmission, especially in the downlink. The broadband orthogonal frequency- and code-division multiplexing system with two-dimensional spreading (time and frequency domain spreading) is becoming a very promising technique for highspeed wireless communications due to its advantages over OFDM. This article presents the basic structure and main functions of the OFCDM system. A nonsequential code assignment scheme is introduced. The novel detection method for the OFCDM, called hybrid multi-code interference cancellation and minimum mean square error detection, is described. The application of advanced techniques to the OFCDM, such as turbo coding and MIMO, is also discussed. It is shown in this article that OFCDM is superior to OFDM. View full abstract»

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  • Interoperability between WiMAXand broadband mobile space networks [topics in radio communications]

    Page(s): 50 - 57
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (258 KB) |  | HTML iconHTML  

    In several countries manufacturers, operators, and public authorities look at WiMAX system as a viable technology to fill the "digital divide," providing broadband services mainly in suburban and rural areas, but also in densely populated areas. Nevertheless, as a standalone system it will never offer global services, and to complement its capabilities, the utilization of broadband space-based access shared among users represents a scalable and cost-effective solution to offer wider area coverage, improved performance in terms of QoS, service continuity in case of terrestrial network failure, and long-range user mobility. Integration between WiMAX and a space-based infrastructure, composed of a combination of satellites and high altitude platforms, can be pursued in several ways. The simplest solution is based on connecting a WiMAX network by means of a terrestrial network terminating at a hub station connected to the space infrastructure. A more flexible solution should allow the WiMAX subscriber station or base station to directly access the space infrastructure. This article addresses the identification of suitable scenarios and a feasibility analysis presenting link budget results related to a subset of the identified solutions. View full abstract»

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  • Wireless relays for broadband access [radio communications series]

    Page(s): 58 - 66
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (529 KB) |  | HTML iconHTML  

    This article presents the outlook of the overall broadband market and operators' challenges in offering profitable mass market mobile data services. The concept of wireless relaying and its state of the art are then introduced, followed by a comprehensive description of a multihop relay system for WiMAX and related use cases. The article explains the impact of relays on network planning and presents an example of deployment cost analysis in different traffic scenarios and propagation conditions. Performance results show that multihop relaying is one of the most promising technologies that enables cost-effective enhancement of coverage, user throughput, and system capacity, and is especially suitable for the emerging markets and rural areas. View full abstract»

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  • Next-generation carrier ethernet transport technologies [guest editorial]

    Page(s): 67 - 68
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    The five articles in this special issue focus on key carrier Ethernet transport topics in standards and architecture, techniques and options, and real-world deployment experiences. The articles are summarized here. View full abstract»

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  • The evolution of carrier ethernet services-requirements and deployment case studies [next-generation carrier ethernet]

    Page(s): 69 - 76
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (110 KB) |  | HTML iconHTML  

    Carrier Ethernet is one of the fastest growing areas in the data communication field in recent years. In particular, the combination of MPLS core transport technologies in conjunction with IEEE 802.1ah in aggregation is one of the most interesting recent developments in the Carrier Ethernet evolution. This article provides a brief overview of the Ethernet technologies and requirements from the perspective of the service provider. We use three deployment case studies to illustrate the use of different technologies and discuss network design considerations. We identify the important factors influencing network design decisions and the future work in building Carrier Ethernet networks and services. View full abstract»

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  • Provider backbone bridging and MPLS: complementary technologies for next-generation carrier ethernet transport

    Page(s): 77 - 83
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (127 KB) |  | HTML iconHTML  

    Although provider backbone bridging is sometimes cast as an alternative technology to MPLS for Ethernet transport, the fact is that both technologies can be leveraged to complement one another in a service provider network. This provides the network operator with the best of what each technology has to offer in terms of scalability, manageability, cost, and flexible support for services. An example of the two technologies working in unison is provider backbone bridging interoperating with H-VPLS over networks with an MPLS core. The combined infrastructure leverages the strengths of Ethernet and MPLS with the added advantage of addressing the major shortcomings of standard H-VPLS. View full abstract»

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  • Ethernet data plane evolution for provider networks [next-generation carrier ethernet transport technologies]

    Page(s): 84 - 89
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    This article provides an overview of the evolution of the Ethernet data plane. In particular, it focuses on the emergence of features that have made Ethernet an attractive infrastructure technology option for carriers and network providers. These include the development of data plane maintenance protocols (OAM), and scaling enhancements, initially in the form of VLANs, then VLAN stacking (802.lad), and more recently complete recursion of headers (802.lah). The complete recursion of headers has led to the ability to decouple the infrastructure data plane from traditional bridging behavior while preserving other desirable attributes, leading to new approaches to operating Ethernet networks such as PBB-TE. View full abstract»

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  • Network high availability for ethernet services using IP/MPLS networks

    Page(s): 90 - 96
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    Enterprises are increasingly using Ethernet as the foundation for transforming their networks to Internet Protocol. Simultaneously, service providers are deploying Ethernet to exploit the demand for wide-area Ethernet services and as the infrastructure for new residential services such as IPTV. This is due to Ethernet's low cost per bit and ubiquity in local area networks. Recent years have seen the widespread deployment of IP/MPLS networks to address this opportunity. IP/MPLS enables enhanced flexibility over the same converged network for IP and legacy services, avoiding the need to build separate per-service networks. It also adds carrier- grade capabilities such as quality of service, traffic engineering, and resiliency, thereby enabling new multipoint services such as virtual private LAN service. However, using Ethernet for ";always-on"; and other mission-critical services has resulted in new resiliency requirements, in both the access and the network core. Two novel developments address these high expectations by enabling significant improvements in service availability. These are pseudowire redundancy and Ethernet multi-chassis link aggregation. This article reviews the current redundancy mechanisms typically deployed in Ethernet and MPLS networks. We show how additional enhancements are required in both the network core and the access to the Ethernet service. We describe new pseudowire redundancy and MC- LAG mechanisms, showing how they work together to enable end-to-end protection for Ethernet virtual private wire services and VPLS. View full abstract»

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  • OAM and its performance monitoring mechanisms for carrier ethernet transport networks

    Page(s): 97 - 103
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (92 KB) |  | HTML iconHTML  

    Ethernet technology is rapidly gaining importance as it becomes a dominant solution for a converged transport network. Ethernet OAM features defined in standards provide a means of performance improvement to meet carrier-class transport network requirements. This article outlines Ethernet OAM functions and mechanisms, and explains how its performance monitoring schemes work. In addition, this article introduces open issues and their potential solutions in the performance monitoring of Ethernet OAM for the next phase of standardization. View full abstract»

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  • Web services in telecommunications, part II [Guest Editorial]

    Page(s): 104 - 105
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    The five articles in Part II of this feature topic focus on practical articles covering web services in telecommunications. The articles are summarized here. View full abstract»

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  • Performance evaluation of eventing web services in real-time applications

    Page(s): 106 - 111
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    The objective of this research is to study the application of Web services technology in distributed real-time data delivery systems, as well as to determine the appropriate contexts in which such a design can be considered. We focus on distributed real-time systems and more specifically, on distributed soft real-time systems, which stand to benefit most from the use of Web services technology. We provide a means to evaluate the inclusion of Web services-based middleware in real-time system design. The decision to use the standardized data representation and communications protocols of Web services can bring tremendous value and benefit to both the service provider and the end user of a real-time system; however, the temporal performance of such systems is a critical factor. This research examines the most significant general performance considerations applicable to such systems and more specifically, provides a model to be used in the determination of whether a given system configuration can meet a specific soft real-time performance target. View full abstract»

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  • Think inside the box! optimizing web services performance today [web services in telecommunications, part II]

    Page(s): 112 - 117
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (81 KB) |  | HTML iconHTML  

    Although Web services technology holds great promise for universal integration, several obstacles stand in the way of its acceptance. Work is being done to address these obstacles to enable the adoption of Web services technology in the future,, but where do we stand today? In particular, what can be done today to combat the often cited problem of slow response time for Web services? Although XML hardware acceleration and SOAP compression schemes can improve the overall response, the authors found that the appropriate selection of client software, server software, and data structures can have a substantial impact. It is possible to have a profound impact on performance using tools that are routinely and dependably available to us now. View full abstract»

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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