This paper addresses Dynamic Spectrum Sharing (DSS) between two wireless operators. The Universal Mobile Telecommunication System (UMTS) network is used as a case study. The proposed protocol is evaluated under the uniform and non-uniform traffic conditions. The underlying principles of the algorithm can be deployed in the UMTS extension Band (2500MHz-2690MHz) which is yet to be allocated or th...

Traffic safety is a very important issue in modern society and the last couple of years researchers have started looking at telecommunication solutions to enhance traffic safety. More specifically researchers are looking at emergency alert services, enabling cars to warn eachother for incidents (slippery road, accident, . . . ). Existing forwarding protocols for vehicular networks often use an ...

The introduction of smart phones and other smart gadgets, which offers ubiquitous internet access and other diverse multimedia applications, has lead to the explosive growth of mobile data. However, this also increases the energy consumptions and carbon footprint of the mobile communications industry. The recent advancement in green telecommunication networks explores energy saving through dyna...

The seriousness of road traffic accidents in terms of personal injuries, fatalities, and property damage, has been recognised by the World Health Organisation as a social and public health problem. Intelligent Transport Systems (ITS), based on advanced telecommunication and information technology, offer a great potential for improving the road safety situation for all types of road-users. ITS c...

Consider an infinite square grid . How many discs of given radius , centered at the vertices of , are required, in the worst case, to completely cover an arbitrary disc of radius placed on the plane? We show that this number is an integer in the set whose value depends on the ratio of to the grid spacing. This result can be applied at the very early design stage of a wireless cellular network t...

Congestion Control performs a very important role in Computer Networks, Modern Telecommunication, Internet and both wired and wireless communications are being intended for high-speed communication of large amounts of data. Due to lack of proper Congestion control mechanism the congestion collapse of such networks would become highly complex. A network with Streamed media traffic is a challenge...

We study a class of noncooperative general topology networks shared by users. Each user has a given flow which it has to ship from a source to a destination. We consider a class of polynomial link cost functions adopted originally in the context of road traffic modeling, and show that these costs have appealing properties that lead to predictable and efficient network flows. In particular, we s...

Information collection in the disaster area is an important application of pigeon networks—a special type of delay tolerant networks (DTNs) that borrows the ancient idea of using pigeons as the telecommunication method. The aim of this paper is to explore highly efficient scheduling strategies of pigeons for such applications. The upper bound of traffic that can be supported under the deadline ...

Modern telecommunication network is characterized by intensive growth and enormous capabilities. A huge number of users, types of services offered, and permanent trend of increasing the transfer rate make very difficult, or even impossible, to model, predict and control such a traffic. The paper describes the possible use of neural networks (NNs) in solving some problems arising in modern telec...

The Universal Mobile Telecommunication System (UMTS), viewed as the wireless access part of a backbone ATMbased broadband services fixed network (B-ISDN), serves the goal for future integrated communications. One of the major issues for the deployment of UMTS high-bandwidth and real-time multimedia applications, is the specification of acceptable Quality of Service (QoS) requirements for mobile...