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Personal, Indoor and Mobile Radio Communications, 2006 IEEE 17th International Symposium on

Date 11-14 Sept. 2006

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  • [Breaker page]

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  • Reviewer and referee listings

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  • [Advertisements]

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  • Drivers of Novel Access Provisioning -Re-Use Aspects and Operator Cooperation

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    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (4640 KB) |  | HTML iconHTML  

    New network and business architectures with low cost factors are necessary to promote development of extensive usage of a multitude of high data rate wireless services similar to the Internet. The novel access provisioning (NAP) project investigates the possibilities in local access and service provisioning as a complement to existing mobile networks. We expect that successful high bandwidth mobility services require more than local coverage even if wide area coverage is compromised. Many local access providers need to cooperate to make the service reasonably accessible. Different drivers of new market players and business models are analyzed View full abstract»

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  • Universal Plug and Play Based Billing System for Moving Networks

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    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (190 KB) |  | HTML iconHTML  

    This paper describes a possible utilization of the UPnP architecture for accounting purposes in moving networks. Starting from a system architecture where the UPnP framework is used for attaching a moving network to a remote network providing a certain number of services, the paper shows how it is possible to use the same UPnP architecture for accounting users in the moving network and for transferring accounting information between a moving network and a remote network (i.e. the service provider); this allows the utilization of the same standard mechanism for all the different signalling purpose View full abstract»

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  • Multimedia Mobile Services for the Semantic Web

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    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (158 KB) |  | HTML iconHTML  

    This document describes the methodology of creating semantically-enriched multimedia mobile services using tools and service enablers provided by the DeSyME project. A brief introduction to the semantic Web is presented along with the explanation of its relation to the subject of Web services. Next, the description of the DeSyME framework is included. Finally, examples of multimedia mobile services developed at Gdansk University of Technology are presented to illustrate possible utilities of described technologies View full abstract»

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  • Wireless IP Access System (WIPAS) -Broadband Access System by "fiber + radio"

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    Nippon Telegraph and Telephone Corporation (NTT) developed the wireless IP access system (WIPAS), a point-to-multipoint fixed wireless access (FWA) system utilizing the 26-GHz frequency band for home and small office-home office (SOHO) users to provide broadband Internet access service. WIPAS provides a broadband access service by combining wireless technology with optical fiber. We describe this structure as "fiber + radio." WIPAS provides a best-effort-type IP service with the transmission rate of 80 Mbit/s. WIPAS is compatible with FTTH in terms of cost, transmission speed and user interface, and is a part of NTT's broadband access infrastructure. The access point (AP, hub station) was downsized so that it can be mounted on a telephone pole. The wireless terminal (WT, user equipment) was downsized to a volume of approximately two liters. To expand service areas for WIPAS services, we employed an adaptive modulation scheme. We simulated line of sight (LOS) and considered transmission distance of WIPAS. This paper describes the system concepts, specifications, technologies, and estimation of transmission distance of WIPAS View full abstract»

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  • On Maximizing Revenue for Client-Server Based Wireless Data Access in the Presence of Peer-To-Peer Sharing

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    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (109 KB) |  | HTML iconHTML  

    We consider a wireless data access scenario where a centralized server provides data items to its clients with a fee. To reduce the total charges incurred, clients perform "peer-to-peer (P2P) sharing" - clients exchange data items at a lower cost. Specifically, P2P sharing cost is determined by two factors: energy and bandwidth. Neighboring clients share data objects among themselves if it is mutually beneficial. This would inevitably lead to reduced server's revenue. We investigate the effectiveness in using pricing as a strategy for the server to indirectly regulate the amount of P2P sharing. We propose an auction pricing mechanism that allows clients to bid for their desired data objects. Simulation results show that the proposed pricing strategy effectively deters sharing in lightly-loaded network while judiciously leverages sharing when the network is congested View full abstract»

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  • Expanding Growth Markets with Subscriber Segmentation

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    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (162 KB) |  | HTML iconHTML  

    This paper presents an innovative solution to reduce the total cost of ownership (TCO) for mobile users in growth markets. This specifically addresses countries with a large variety of average revenue per user (ARPU). Instead of a traditional, homogeneous subscriber base, the new concept enables the operator to offer service quality depending on a subscription class chosen by the subscriber. This way, a high-income, high-ARPU segment can expect top service quality ("no call blocking or dropping"), while low-income, low-ARPU subscribers, who previously were not able to afford any kind of mobile services, will experience a "best effort" type of service, with high service quality most of the time but increased call blocking rates and vulnerability to pre-emption during busy hours. The higher ARPU from high-class subscribers and the generation of additional low-ARPU subscribers are expected to generate ca. 50% higher revenue for the operator. Capacity upgrades show an immediate return on investment (ROI). Due to its still dominant position in the market share of mobile services, GSM voice calls are the main focus of this work View full abstract»

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  • Business Aspects of Advertising and Discovery Concepts in Ambient Networks

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    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (213 KB) |  | HTML iconHTML  

    This paper presents initial findings on how ambient networks technology will enable new ways to establish and manage access and service provisioning from a business perspective. The concepts of network composition and multi-radio multi-operator wireless access provide the framework for network advertising and discovery, which are essential first steps for allowing "any" user to be able to connect to "any" network. Technology support for different options of advertising are described followed by a discussion of the business related aspects including: i) payment schemes, ii) dynamic pricing, iii) use of identifiers for "frequent users", iv) use of public or "private" directories of offers and v) possibilities with alliances between providers. Finally, results of a case study on dynamic pricing are presented. The conclusion is that the proposed concepts of advertising and discovery indicate a very large potential for enabling a competitive market for both access and service provisioning including support for establishment of agreements on the fly View full abstract»

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  • Adaptive Dissemination of Safety Data Among Vehicles

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    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (187 KB) |  | HTML iconHTML  

    In-vehicle active safety systems are directed towards reducing the number of accidents or at least alleviating their consequences. One of the key technologies for developing these systems is safety vehicular communication. This paper proposes an adaptive approach to dissemination of safety data among vehicles. This data is then used by systems in vehicles for identifying hazards in traffic and reacting to them. We propose a proactive protocol that makes use of contextual information for adapting the communication to the specifics of the traffic situation. Communication performance is investigated via simulations and indicates that efficient vehicular communication can be provided by the proposed protocol View full abstract»

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  • Wireless Audio Communication Network for In-Vehicle Access of Infotainment Services in Motorcycles

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    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (596 KB) |  | HTML iconHTML  

    In this work we describe the realization of a wireless audio communication system that makes available to the driver and the passenger of a motorcycle a wide range of attractive audio services such as an intercom, listening to FM radio or navigational messages from a GPS navigator, placing phone calls by means of a cellular phone. The novelty and the key point of this wireless system is the multi-point Bluetooth audio network formed and managed by the audio communication unit placed on the vehicle. This unit acts as an audio access-point to which the users, equipped with standard Bluetooth headsets, independently connect, register and access the available audio services. The demonstrator realized is also described to show that the proposed system efficiently provides significant and new infotainment features to the motorcycle riders View full abstract»

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  • Vehicle Satellite Interactivity Database by GPS Signal Reception Collected in the Civil Activities

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    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (6520 KB) |  | HTML iconHTML  

    A novel scheme is proposed and demonstrated where satellite visibility viewed from running vehicle is economically and effectively evaluated with such low cost GPS receivers like automobiles are equipped with. Our preliminary experiment articulated even economical L1 C/A GPS receivers can create enough precise database of ground feature blockage if only two statistical parameters we propose are adequately set. The geographical characteristics of satellite visibility are demonstrated in this scheme. A blockage database will be created in the cooperation with the government and the civil in the style of a low-cost and large-scale automatic survey. The blockage database will very be useful in future's mobile and vehicle satellite communication society, because it allows vehicular satellite communication terminal anticipating the coming blockage and preparing satellite handovers effectively View full abstract»

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  • A Seamless Service Continuity Scheme for Enhanced Network Performance in UMTS/WLAN Networks

    Page(s): 1 - 5
    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (232 KB) |  | HTML iconHTML  

    The proliferation of wireless access technologies, mostly wireless LANs, along with the ubiquitous coverage of cellular networks, has spurred many researchers to consider schemes for integrated network provision. In overlaying network environments, flexible resource management and service continuity during handover play a crucial role in the quality-of-service seen by the user. This paper describes an integrated UMTS/WLAN architecture that manages to establish every connection in a mobile terminal through the most appropriate access network, based on both network policies and user preferences. Moreover, connections are handed over independently between UMTS and WLAN, aiming at seamless service continuity. A detailed simulation model is used to measure the performance of the proposed architecture against existing schemes View full abstract»

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  • Interface Selection for Multihomed Mobile Hosts

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    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (99 KB) |  | HTML iconHTML  

    In this paper we discuss the problem related to interface selection in a multihomed mobile host. Traditional signal strength or priority based handover algorithms may not be sufficient for providing an always-best-connected access for the user in a heterogeneous multi-access environment. We present the policy based handover logic of VERHO mobility management system, where handover decisions are made in a more intelligent way with several affecting cross-layer parameters, policies and interface selection algorithms. Mainly, in this paper, we concentrate on comparing and analyzing different interface selection algorithms in Matlab simulations to find out the best alternative for the VERHO system View full abstract»

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  • Improving Multiple Mobile Application Interaction with Unified Session Management

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    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (170 KB) |  | HTML iconHTML  

    This paper presents a novel mobile application interaction concept using application supernetworking. With efficient use of middleware, the use of resources can be optimized through so called Supersessions, which is an important factor especially in mobile devices. By implementing application co-operation, the user's awareness of available services can be increased while decreasing the amount of needed user input. Measurement results based on our plug-and-play application platform prototype with application supernetworking show the feasibility of the approach View full abstract»

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  • User Profiling and Preference Modelling in 4G Terminals

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    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (268 KB) |  | HTML iconHTML  

    This paper discusses the problem of user preference modelling in the context of next generation terminals operating in heterogeneous environments. It includes an approach to the definition, mathematical formulation and solution of this problem. Indicative results of the proposed solution method are presented in the framework of a real-life scenario, which simulates a day in the life of an ordinary user View full abstract»

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  • On the Jitter Performance of FIFO and Priority Queues Mixture

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    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (166 KB) |  | HTML iconHTML  

    We investigate the impact of the insertion of routers implementing a non-preemptive priority queue mechanism (PQ) in a chain of simple first-in-first-out (FIFO) routers on the end-to-end jitter experienced by high and low priority packets. The study has been realized from an analytical point of view: we are able to give the explicit form of the total jitter in relation to the time that a packet spends in queue. We study its behavior as a function of the input rate of the high and low priority packets and of the number of PQ routers present in the whole path by showing an evident decrease of the high priority packets jitter with respect of the case of a chain composed by only FIFO nodes View full abstract»

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  • Feasibility Study of a Mobile Peer-To-Peer Navigation Application

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    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (168 KB) |  | HTML iconHTML  

    Contemporary ubiquitous information systems combine efficiently context-aware and peer-to-peer communication concepts. This paper introduces a novel mobile peer-to-peer (P2P) navigation application, NaviP2P. In addition to basic navigation functionalities such as GPS positioning, showing the user location on the map, scrolling and zooming of the map view, the application leverages P2P group communication to portray peer group members' availability information on the map for starting supported application sessions. In this feasibility study, the current status of the application prototype is presented with a quantitative latency and cost analysis. End-to-end latency budget is outlined and different map storage and distribution solutions are compared to analyse communications and implementation feasibility View full abstract»

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  • A Study of the Effects of Reference Point Density on Toa-Based UWB Indoor Positioning Systems

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    Save to Project icon | Request Permissions | Click to expandQuick Abstract | PDF file iconPDF (113 KB) |  | HTML iconHTML  

    The performance of ultra-wideband (UWB) indoor positioning systems based on time of arrival (TOA) techniques is generally affected by the density of reference points (RPs), as well as undetected direct path (UDP) conditions. For a fixed number of reference points (RPs), the performance of some indoor positioning algorithms tends to degrade as the size of the area is increased, i.e. the RP density is decreased. In this paper, we evaluate the effects of RP density on the performance of different positioning algorithms in the presence of empirical distance measurement error (DME) models derived from UWB measurements in typical indoor environments. We then present functional relationships between RP density and positioning mean-square error (MSE) for these algorithms. These relationships can be used for more effective indoor positioning system design and deployment. Finally, we investigate the effects of bandwidth with respect to improving the performance of these algorithms View full abstract»

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