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Wireless Communications, IEEE

Issue 5 • Date Oct. 2004

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Displaying Results 1 - 11 of 11
  • A self-adaptive service provisioning framework for 3G+/4G mobile applications

    Publication Year: 2004 , Page(s): 48 - 56
    Cited by:  Papers (9)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (332 KB) |  | HTML iconHTML  

    In light of the increasing acceptance of the notion of next generation networks (NGN), which results from the convergence of the fixed and mobile telecommunications, Internet, and entertainment sectors, there is a need for the realization of next-generation service delivery platforms to allow seamless and adaptive provisioning of multimedia information and communication services to mobile users. This means that in such an NGN environment different end systems, access networks, and service platforms have to be integrated. For this highly heterogeneous communications and services environment, we propose a self-adaptive service provisioning middleware framework (ASPF), which, by interoperating with existing wireless and wireline service delivery platforms, aims to enable seamless omnipresent service provisioning to mobile users anywhere, anytime, and in any context. The ASPF is intended to "liberate" applications from space and time limitations, networks, platforms, and device dependences, minimize time-to-market constraints, and eliminate major hurdles that hinder the rapid deployment of new mobile services and applications. Key to this goal is interworking/integration with current SDPs, such as IN/CAMEL, OSA/Parlay, and the emerging IMS. View full abstract»

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  • Issues in introducing resource brokerage functionality in B3G composite radio environments

    Publication Year: 2004 , Page(s): 32 - 40
    Cited by:  Papers (13)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (303 KB) |  | HTML iconHTML  

    This article identifies and discusses problems that should be addressed for introducing resource brokerage functionality in beyond-third-generation wireless environments. Resource brokerage is a capability required by the B3G concept. It enables cooperation between NPs in handling new service area conditions that originate in a network of the B3G infrastructure. The article starts from a business case that justifies the need for RB functionality. Its integration in management systems for composite radio environments (MS-CRE) is also presented. Subsequently, there is a presentation of the RB process interfaces, as well as the approach taken to decompose the overall process into smaller problems. Finally, there is a description of the individual tasks: selection of QoS levels, demand volume, and prices. View full abstract»

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  • Fixed and mobile service convergence and reconfiguration of telecommunications value chains

    Publication Year: 2004 , Page(s): 42 - 47
    Cited by:  Papers (18)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (272 KB) |  | HTML iconHTML  

    The value chain model serves as a proper analytical tool of industry processes, particularly under rapidly changing telecommunications environments. This article attempts to provide a better understanding of the convergence between the fixed and mobile telecommunication industries by investigating changes in the value chains. Specifically, this article develops a new type of fixed-mobile convergence value chain, and highlights the importance of content and application providers in the new value chain. Some examples of fixed and mobile service convergence in Korea are discussed, and these confirm progress in fixed and mobile convergence, and reconfiguration of value chains. View full abstract»

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  • Mobility support and radio resource management

    Publication Year: 2004 , Page(s): 2
    Save to Project icon | Request Permissions | PDF file iconPDF (238 KB) |  | HTML iconHTML  
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  • Services in interworking 3G and WLAN environments

    Publication Year: 2004 , Page(s): 14 - 20
    Cited by:  Papers (19)  |  Patents (3)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (287 KB) |  | HTML iconHTML  

    Interworking WLANs and 3G mobile networks are expected to provide ubiquitous wireless communications at high data rates and a large variety of services with variable bandwidth and QoS requirements, across a wide range of propagation environments and mobility conditions, using dual mode terminals. The interworking of the two networks is a major step toward a new generation of wireless networks in which other radio technologies are also be integrated. In this article we present possible architectures that enable the interworking of 3G and WLAN networks. We then address the capabilities of various terminal types and describe future services in the interworking environment. Finally, we present market forecasts on terminal and service demand growth. View full abstract»

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  • A new model for service and application convergence in B3G/4G networks

    Publication Year: 2004 , Page(s): 6 - 12
    Cited by:  Papers (13)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (281 KB) |  | HTML iconHTML  

    4G mobile communication networks encompass heterogeneous technologies that can be categorized at different levels according to their access coverage. Personal area, body area, and ad hoc networks are defined at a personal level, WLAN and UWB are examples at a local/ home level, and 3G technologies such as UMTS are technologies at a cellular level. In spite of their heterogeneity, these technologies shall be seamlessly integrated in 4G networks, naturally creating an open architecture. By openness we mean that the network architecture is divided into different layers, and the communication between these layers is performed through open interfaces or APIs. Although this open integration between 4G technologies is normally presented at the lower layers (connectivity and control), integration at the upper layers (service and application) is equally important. In this article we present a new model for service and application integration in 4G networks. This model generalizes the different service and application creation environments defined for each of the previously mentioned technologies, providing a uniform and interoperable framework for 4G services and applications. The model is based on a hierarchical architecture that provides compatibility for services in different technologies and at the same time is able to capture the specific details for each particular technology. The model also defines how 4G applications should be specified. In the last part of this article we present a testbed we have implemented in order to validate this model. View full abstract»

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  • Software testing for wireless mobile computing

    Publication Year: 2004 , Page(s): 58 - 64
    Cited by:  Papers (13)  |  Patents (1)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (12231 KB) |  | HTML iconHTML  

    4G wireless networks make it increasingly difficult to develop and test application software for mobile terminals in comparison with 3G or earlier generations. These 4G networks incorporate wireless LAN technologies, and mobile terminals can access the services provided by LANs as well as global network services. Therefore, software running on mobile terminals may depend on not only its application logic but also on services within the LANs to which the terminals are connected. To construct correct software to run in mobile terminals for 4G wireless networks and wireless LANs, it must be tested in all the networks to which the terminal could be moved and be connected. This article presents a new approach, called flying emulator, to testing software designed to run on mobile terminals. Like existing approaches, the approach provides software-based emulators of its mobile terminals for software designed to run the terminals. It is unique because it constructs emulators as mobile agents that can travel between computers. These emulators can carry the target software to the networks to which the terminals are connected and allow it to access services provided by the networks in the same way as if it was moved with and executed on the terminals connected to the networks. This article describes the idea of the approach, its implementation, and our experience with a typical application. View full abstract»

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  • Applications and services for the B3G/4G era

    Publication Year: 2004 , Page(s): 3 - 5
    Cited by:  Papers (2)
    Save to Project icon | Request Permissions | PDF file iconPDF (520 KB) |  | HTML iconHTML  
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  • IEEE Wireless Communications Magazine

    Publication Year: 2004 , Page(s): 0_1
    Save to Project icon | Request Permissions | PDF file iconPDF (442 KB)  
    Freely Available from IEEE
  • Table of contents

    Publication Year: 2004 , Page(s): 1
    Save to Project icon | Request Permissions | PDF file iconPDF (224 KB)  
    Freely Available from IEEE
  • Novel velocity and call duration support for QoS provision in mobile wireless networks

    Publication Year: 2004 , Page(s): 22 - 30
    Cited by:  Papers (8)
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (418 KB) |  | HTML iconHTML  

    This article presents a novel mobility-based resource reservation and call admission control scheme that is applicable to any real wireless multimedia network. The scheme exploits three key mobility parameters - the position, direction, and speed of a mobile unit - together with the duration of a particular call to accurately estimate the cell visiting probability in order to identify a shadow cluster of cells the unit is most likely to visit. Each cell in the cluster reserves resources for an estimated time interval, which is adapted depending on the aggregated probability of all active units visiting a particular cell. Simulation results confirm the superiority of the new scheme over the existing predictive mobility support scheme in terms of three QoS parameters: call blocking rate, call dropping rate, and channel utilization. View full abstract»

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IEEE Wireless Communications Magazine deals with all technical and policy issues related to personalization, location-independent communications in all media.

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Hsiao-Hwa Chen
Cheng Kung University, Taiwan