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Future wireless networks will have to provide seamless connectivity anytime and everywhere while fulfilling conditions concerning sustainable bit rates and maximum delays. Next generation wireless networks will provide communication services not only to persons but also to machines which will have as consequence a significant increase of the number of terminals connected and involved in the communication...
Heterogeneous wireless networks are an important component of Next Generation Networks and represent one of the main solutions to deal with the increasing demand for wireless communications. Joint usage of the transmission resources available in different networks allows seamless connectivity even in special cases, like Intelligent Public Transport (ITS) applications. In order to efficiently exploit...
The study proposes an easily deployable platform for providing ubiquitous connectivity to public transportation vehicles. The platform is capable to exploit the connectivity offered by heterogeneous wireless networks owned by different operators and it integrates a centralised information system (CIS) which stores the context information (CI) characterising the heterogeneous networks. The study describes...
This paper proposes a practical approach to load balancing in heterogeneous wireless networks, which is based on the adaptation of the multiple knapsack problem to this specific scenario. Several algorithms capable of solving the knapsack problem are considered, namely a brute force, a dynamic programming and a greedy approach. The algorithms are evaluated by computer simulations in terms of the capability...
Nowadays the Always Best Connected paradigm becomes more and more important, but fulfilling the requirements of this paradigm is not an easy task. Providing ubiquitous connectivity in the particular case of intelligent transportation systems requires, in most of the cases, the joint usage of the transmission capacities offered by several wireless access technologies. This paper proposes a Game Theory...
This paper presents a capacity and Available Transfer Rate evaluation mechanism which can be used in a heterogeneous wireless network. This is needed to perform load balancing over several wireless links in order to fulfill the transfer rate and connectivity requirements of Next Generation Network services. The implemented measurement tool is based on WBest and the experiments considered different...
This paper presents an ubiquitous connectivity solution for public transportation services and proposes a vertical handover (VHO) algorithm between cellular networks and WLANs, used to implement the ubiquitous connectivity in a heterogeneous wireless network. The system architecture, on which our solution relies, is also presented. The novelty of our approach is that the VHO algorithm takes the decision...
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