Second International Conference on 3G Mobile Communication Technologies

26-28 March 2001

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Displaying Results 1 - 25 of 85
  • Its services in Wales using the Wireless Application Protocol (WAP)

    Publication Year: 2001, Page(s):44 - 46
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (279 KB)

    This paper describes the UK site of the ITSWAP project which is developing ITS services using the Wireless Application Protocol (WAP). The site is situated in Wales and includes several key features aimed at improving travel using the potential of the WAP. ITS services being implemented in Wales include pre-trip traveller information, journey planning, route planning, tourist information, on-trip ... View full abstract»

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  • Spatial channel characterisation of FDD wireless links

    Publication Year: 2001, Page(s):68 - 72
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (360 KB)

    For smart antenna deployments in frequency division duplex (FDD) applications the downlink weight vector can be derived from the uplink steering vector. However, this assumes a degree of correlation between these channels. It is shown here that de-correlation between uplink and downlink power azimuth spectrums (PAS) is significant for frequency offsets as small as 5 MHz in urban environments, with... View full abstract»

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  • Managing increasingly software dependent mobile systems

    Publication Year: 2001, Page(s):247 - 251
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (452 KB)

    Trends within mobile communications networks are towards more diverse systems which rely increasingly of software components. The UK Virtual Centre of Excellence in Mobile and Personal Communications is researching these trends, and how it will be possible to control these future networks. This paper describes the work in the software dependent systems area of the programme View full abstract»

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  • Dynamic pricing in cellular networks, a mobility model with a provider-oriented approach

    Publication Year: 2001, Page(s):63 - 67
    Cited by:  Papers (7)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (556 KB)

    The success of i-mode in Japan and the slow but, nevertheless, steady uptake of WAP in the UK and elsewhere indicate a healthy growth in demand for mobile data services. This rapid growth in coupled to the limited bandwidth to the air interface, has encouraged researchers to find technological solutions to increase the number of usable suggested remedies invariably involve installation of new infr... View full abstract»

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  • Terminal reconfigureability-the OPTiMA framework

    Publication Year: 2001, Page(s):241 - 246
    Cited by:  Papers (1)  |  Patents (8)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (676 KB)

    Most implementations of software definable radio platforms concentrate on reconfiguration of physical hardware via proprietary application programming interfaces. At the networking level, projects such as the Radio API (GloMo) and the IEEE 1520 are prime examples of the efforts to open up the protocol stacks and to introduce open platforms and service programmability. Software reconfigureable radi... View full abstract»

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  • Services via mobility portals

    Publication Year: 2001, Page(s):38 - 43
    Cited by:  Papers (1)  |  Patents (6)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (592 KB)

    This paper examines the importance of mobility portal services and the technologies that will be essential in delivering content over next generation network technologies. Finally, proposed developments are discussed which will extend the functionality available at the mobile portal through the improvements in terminal capability and development of protocols for delivery of content over a mobile n... View full abstract»

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  • Channel adaptive multiple access and intersymbol interference cancellation techniques for TDD-mode UMTS receivers

    Publication Year: 2001, Page(s):267 - 271
    Cited by:  Papers (1)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (568 KB)

    This paper presents a comparison of simulation results for various time division duplex (TDD) UMTS receiver architectures. Uplink and downlink simulations are performed over frequency-selective time varying channels. Results indicate that in practice, satisfactory performance cannot be obtained using fixed branch receiver architectures. To overcome this limitation, a reconfigurable blind adaptive ... View full abstract»

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  • Capacity of an integrated LCD/UDD WCDMA cellular network

    Publication Year: 2001, Page(s):58 - 62
    Cited by:  Papers (2)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (344 KB)

    Analytical characterisation of low constraint delay (LCD) traffic on the uplink in a WCDMA cellular network is a well-understood procedure. However, integration of UDD traffic into existing models is not immediately obvious. For example, a common approach to uplink capacity estimation of an integrated LCD/UDD WCDMA system simply involves choosing an activity factor that represents the latency of a... View full abstract»

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  • Performance characteristics of the Enhanced General Packet Radio Service for the mobile Internet access

    Publication Year: 2001, Page(s):287 - 291
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (404 KB)

    The performance characteristics of the Enhanced General Packet Radio Service (EGPRS) with the focus on radio network dimensioning for the mobile Internet access are presented. The impact of the new modulation and coding schemes (MCSs) and the related link quality control (LQC) functions defined in the EGPRS specifications on the overall system performance and the quality of service (QoS) for the n... View full abstract»

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  • Agent-based resource management for 3G networks

    Publication Year: 2001, Page(s):236 - 240
    Cited by:  Papers (3)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (472 KB)

    This paper discusses an architecture for efficient, scalable and robust real time control of 3G mobile systems in the context of realistic business models of network providers, service providers and customers and the relationships between these actors. The aim is to bring financial benefits to mobile users through improved efficiency; extensions to the same approach would allow management of a var... View full abstract»

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  • Recursive filtering approach to MS locating using quantized to a measurements

    Publication Year: 2001, Page(s):206 - 210
    Cited by:  Papers (4)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (376 KB)

    A mobile station (MS) location estimation and tracking approach based on the recursive filtering of quantized time-of-arrival (TOA) measurements is presented in this paper. Two techniques for estimating random variables from quantized measurements are investigated first. The TOA measurements may present biases which are unobservable and can determine the location filter to obtain a biased estimate... View full abstract»

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  • Hybrid wavelet/vector coder for mobile multimedia applications

    Publication Year: 2001, Page(s):417 - 420
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (288 KB)

    This paper addresses the problem of delivering reliable video information in a world with varying network capacities, an increasing demand in mobility, and frequent occasions of congestion or complete signal loss. A hybrid solution is proposed for the application of handheld wireless videophones with a prioritisation scheme of what information is important and what is not View full abstract»

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  • Modified WAP for secure voice and video communication

    Publication Year: 2001, Page(s):33 - 37
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (416 KB)

    It is essential for future mobile communication systems to support different media types such as audio, video. There is also an increasing need to preserve the confidentiality, data integrity, and authenticity of these media to prevent fraud. In this paper, modifications to the wireless application protocol (WAP) are proposed to enable real time voice and video transmission in future mobile commun... View full abstract»

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  • Dynamic allocation of capacity in UTRA TDD systems

    Publication Year: 2001, Page(s):262 - 266
    Cited by:  Papers (5)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (612 KB)

    This paper presents a dynamic channel allocation (DCA) algorithm based on the time slot scoring method. The algorithm is designed for multimedia traffic in system which implements time division code division multiple access system (TD/CDMA). The algorithm tries to provide each service class appropriate quality of service (QoS). Simulations of a system using both fixed channel allocation (FCA) and ... View full abstract»

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  • Dynamic spectrum allocation in a multi-radio environment: concept and algorithm

    Publication Year: 2001, Page(s):53 - 57
    Cited by:  Papers (32)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (488 KB)

    This paper discusses the concepts of dynamic spectrum allocation (DSA) as an alternative to fixed allocation schemes. The paper investigates a scenario where a block of spectrum is shared between a unicast system, such as terrestrial UMTS (Universal Mobile Telecommunication System), and a broadcast system, such as DVB-T (Digital Video Broadcasting-Terrestrial), each with different time-varying loa... View full abstract»

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  • Packet loss rate estimation in a packet switched voice cellular network

    Publication Year: 2001, Page(s):282 - 286
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (252 KB)

    In this paper two analytical methods for the fast calculation of the packet loss probability in voice cellular networks are provided. Packet loss has significant impact on voice quality and therefore is an important factor (together with co-channel interference) in capacity dimensioning in wireless networks. The first method is based on the so-called “effective bandwidth” concept. Our ... View full abstract»

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  • A comparative study of reconfigurable digital and analogue technologies for future mobile communication systems

    Publication Year: 2001, Page(s):302 - 305
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (284 KB)

    The requirements of 3G and 4G systems dictate that system architectures adapt to various user conditions, i.e. be reconfigurable. The concept of a fully reconfigurable system is fast becoming reality, due to new and advancing enabling technologies. This paper presents two such technologies, the field programmable gate array (FPGA) and field programmable analogue devices (FPAD). These devices provi... View full abstract»

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  • New UTRA-TDD system characteristics

    Publication Year: 2001, Page(s):161 - 165
    Cited by:  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (356 KB)

    This paper presents some of the very new system characteristics of the UTRA-TDD mode, all of which will enable TDD to become a cost-effective, robust and reliable system to deliver advanced 3G services. The presented new features include the code signalling which relates to the reduction of the joint detection implementation at the user equipment (UE), the constant use of codes with spreading fact... View full abstract»

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  • Using open service access to enable mobile Internet applications in UMTS networks

    Publication Year: 2001, Page(s):341 - 345
    Cited by:  Papers (1)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (712 KB)

    Wireless network operators are faced with the significant challenge of rapidly designing and deploying innovative value added applications in a highly competitive environment. This paper explores the prospect for a wireless network operator to use the open service access (OSA) API to provide mobile Internet applications in a UMTS network. This prospect is based on the proposition that the core net... View full abstract»

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  • Locating and eliminating rogue software-reconfigurable terminals from networks

    Publication Year: 2001, Page(s):231 - 235
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (508 KB)

    Reconfigurable radio systems and networks will offer the next major leap forward in mobile and wireless communications, particularly in the light of the many existing world-wide air interface standards and the expected wide range of future broadband mobile and personal communication systems. Clearly, reconfigurable terminals will offer greatly enhanced flexibility to the end user, supporting all t... View full abstract»

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  • A new demixer scheme for blind source separation using general neural network model

    Publication Year: 2001, Page(s):383 - 386
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (184 KB)

    There has been a surge of interest in blind source separation (BSS) because of its potential applications in several areas of engineering and science such as wireless systems. We propose a new neural network demixing scheme using a general neural network structure for the BSS problem for the instantaneous mixtures. It is shown that the existing feedforward (FF) and feedback (FB) neural network sch... View full abstract»

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  • Managing mixed services with controlled QoS in GERAN-the GSM/EDGE radio access network

    Publication Year: 2001, Page(s):147 - 151
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (468 KB)

    Managing multiple services with controlled quality of service (QoS) is crucial to 3rd generation cellular systems. This paper describes and evaluates a simple radio resource management scheme; service-based power setting, employed to accomplish this goal for the GSM/EDGF radio access network (GERAN). Simulation results indicate that with proper power offsets between bearer services prev... View full abstract»

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  • The impact of IPv6 on wireless networks

    Publication Year: 2001, Page(s):323 - 329
    Cited by:  Papers (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (600 KB)

    This paper discusses the role of IP, and in particular IPv6, in third generation mobile networks. 3G networks have a number of complex requirements. This type of network will be expected to handle a mix of traditionally circuit switched and packet data. Some of this will be in real time, whilst “best effort” will suffice for other traffic. Reviewing the current status of IP in 3G netwo... View full abstract»

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  • All IP architectures for cellular networks

    Publication Year: 2001, Page(s):180 - 185
    Cited by:  Papers (5)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (328 KB)

    There are several organisations developing specifications for “All IP” cellular networks; i.e., fully IP protocols based networks. The specification work is on going in established standard developing organisations such as 3GPP, 3GPP2, and IETF, as well as in different industry forums such as 3G.IP and MWIF. We introduce the most important forums involved in All IP development and desc... View full abstract»

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  • Designing a GPRS roaming exchange service

    Publication Year: 2001, Page(s):201 - 205
    Cited by:  Papers (3)  |  Patents (1)
    IEEE is not the copyright holder of this material | Click to expandAbstract | PDF file iconPDF (372 KB)

    Customers of the emerging GPRS, high-speed mobile IP networks will want to be able to use their terminals globally, just as they are accustomed to doing with their existing GSM phones. GPRS operators worldwide need an economic, secure and reliable platform to interconnect their networks in order to provide the customer with this seamless roaming experience which they expect. This paper discusses t... View full abstract»

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