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In this study, the design, hardware implementation and characterisation of a self-tuning 406 MHz antenna of a Cospas-Sarsat personal locator beacon are presented. The realised prototype is able to perform automatic tuning of the antenna under time-varying environmental conditions due to human body movements and sea water proximity. The impedance tuning is performed by tracking the instantaneous value...
The IEEE 802.15.4 and the Zigbee wireless protocol are increasingly being used in ubiquitous applications ranging from smart homes to novel learning applications. A common architecture for such applications has emerged. This paper describes a light-weight software architecture for building such applications. The ZUL (Zigbee-Based Ubiquitous Layer) architecture defines two virtual machines; one for...
To support the emerging trends in mobile interaction, design patterns for distributed software system need adaptations and extensions. In this paper, we describe an implementation framework for providing interactive applications with distributed message-based Model-View-Controller (MVC) architecture using event programming design. The provided solution uses the XMPP protocol for exchanging message...
In order to evaluate the behavior and performance of protocols for Mobile Ad Hoc Networks (MANETs) both simulation and test bed are often used. The simulation is used in first stages and the test bed is used in final stages of development process when real-world tests are needed. Click Modular Router is known as an efficient software architecture for building flexible and configurable routers for...
With the advent of the digital age, service resources integration of mobile multimedia broadcasting is the objective needs of future development. Firstly, SOA architecture system is introduced on the basis of the overview of China mobile multimedia broadcasting (CMMB). Then, with the concepts of the hierarchical structure model of SOA, CMMB service resources integration model including basic information...
On the next generation network, application support functions and service support functions (ASF & SSF) are defined as those that control services. We propose a software architecture of ASF & SSF on real networks. Our architecture has generalized sequence-parts that control communication sessions and provide the application functions with high-level interfaces (IFs), such as Parlay-X, for...
We propose a MDA approach to develop WSN applications, which allows domain experts to contribute in the development of applications without needing knowledge on WSN platforms and allows network experts to program nodes to met application requirements without specific knowledge on the domain. Our approach also promotes reuse, allowing an application model to be reused across different sensor platforms...
Reconflgurability of transceivers for wireless communication systems such as GSM, UMTS, WiMAX and WLAN will become increasingly important. Therefore, a flexible and reliable software and hardware architecture based on the software-defined radio (SDR) paradigm is a meaningful concept. SDRs have paved the way towards cognitive radios (CR), which are based on SDRs that additionally sense their environments,...
The design process of on-vehicle radio node is described in this paper which supports connections to MOST network and takes use of MOST intelligent network interface controller chip. The design process includes system design, hardware architecture and software architecture, and is verified feasible by real experiment. The innovations of the work described in this article are the use of a new generation...
Telecom service providers face a challenge how to increase average revenue per user by new-generation services. In view of the fact that it is extremely difficult to predict the success of the certain kind of service(s), as a result the providers are in need for a dynamic architecture that has to be capable to deliver new services promptly, add resources for successful services as demand increases,...
Nowadays, more and more distributed digital TV and TV-related resources are published on the Web, such as Electronic Personal TV Guide (EPG) data. To enable applications to access these resources easily, the TV resource data is commonly provided by Web service technologies. The huge variety of data related to the TV domain and the wide range of services that provide it, raises the need to have a broker...
Digital Video Content is now pervasive and services like IPTV are gaining traction on hand held devices too. Android, a software platform from Google, pioneering middleware and applications for handheld devices does not offer support for content management services by design. Motivated by these observations, we propose an aggregate model software platform to offer content management and value added...
When it comes to embedded devices, producing highly dependable, fail-safe and efficient software solutions is indispensable. Such devices usually ship in large numbers, should run 24/7, have real-time constraints and work autonomously most of the time, which is why a very high software quality is required. At the same time, as companies are always looking for ways to cut costs, it is not easy to provide...
Nowadays micro and movable devices are widely used in many fields. In these fields, many data message exist. The fourth generation data mining software is trying to analysis data in these areas. The problems we need to solve are changing as the time past, to design a system which can be working longer, it must be adaptive. SOA is becoming to be the standard of appliance software on enterprise level...
Information systems are among the tools most frequently used by businesses in delivering and maintaining services. Yet the challenges faced by enterprises using information technology are not exclusively linked to system development, but are also derived from system operation and management. This paper describes a solution that was developed to address the importance of service operation management...
This paper presents an approach to create Linux Device Driver Framework which will be used for representation and control of DTV related HW components found in Set-top boxes (STB) and TV sets (iDTV). During previous years LinuxTV was established as promising architecture for PC TV cards, but from the announcement of Linux DVB API v3 there was no progress toward embedded systems. Therefore, attempt...
The paper provides a global architectural and decision support solution for a reaction after alert detection mechanisms in the frame of information systems security applied to telecom infrastructures. Therefore, the architecture is developed in a distributed perspective and is composed of three basic layers: the low level that constitutes the interface between the architecture and the infrastructure...
Wireless Sensor Networks (WSN) has the potential to enrich society with some benefits, better engineering, productivity, and improved security. The main goal of energy management architecture applied in networks is to be able to allow an efficient way to enhance sensor node energy autonomy. Nowadays, there are many open issues in WSN. One of them is the energy consumption management. The sensor node...
Based on services-oriented architecture(SOA), perfSONAR is a web service infrastructure. The set of elementary functions have been isolated and can be provided by different services. A primary goal of perfSONAR is to make it easier to detect performance monitoring problems among different network domains. perfSONAR has been widely accepted as one of the web service standards by NRENs (National Research...
This paper presents an in-depth analysis of the behavior of a SCA component-based waveform application in terms of ??inter-component?? communication latency. The main limitation with SCA, in the context of embedded systems, is the additional cost introduced by the use of CORBA. Previous studies have already defined the major metrics of interest regarding this issue, these are CPU cost, memory requirements...
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