Computer networks have played a major role in expanding the operational boundaries in organizations today. Until now traditional methods of networking, which involves computers, wired directly to a hub or switch are the norm. Recent advances in networking technology have made it possible for devices to communicate using various light and wave emitting technologies. WiFi is a perfect example of ...

In this paper, we show that the clustered mobile peer-to-peer (P2P) networks exist in numerous scenarios where mobile users collaborate to improve content distribution services. In order to understand the clustering behavior of nodes in clustered mobile P2P networks, we present a probabilistic model for path selection and use the Mobius Tool to study the clustering behavior of different movemen...

Internet of Things is a key technical and economical challenge for 5G. An important number of technological solutions are developed and deployed (for instance based on the IEEE 802.15.4 standard), specially in the 2.4 GHz ISM band. However this band is shared with other communicating systems, such as WiFi and Bluetooth devices. As a consequence, dealing with interference becomes crucial and has...

In this paper, we propose a decision making algorithm for seamless vertical handover between WiFi hotspots and an overlay WiMAX network. The inputs to the algorithm are the WiFi received signal strength (RSS) and estimated end-to-end TCP handover latency. Simulation of the algorithm using Matlab ® reveals that the distance from the WiFi reception boundary at which handover must be initiated if ...

While WiFi-based indoor localization is attractive, the need for a significant degree of pre-deployment effort is a key challenge. In this paper, indoor localization with no pre-deployment effort in an indoor space, such as an office building corridor, with WiFi coverage but no apriori knowledge of the placement of the access points(APs) is implemented for mobile devices. WiFi Received Signal S...

The framework of this paper is the robotics navigation inside buildings using WiFi signal strength measure. In most cases this navigation is achieved using a Partially Observable Markov Decission Process (POMDP). In the localization phase of this process the WiFi signal strength is used as observation. The localization system works in two stages: map construction and localization stage. In this...

This paper deals with the localization module extension for various platform to support locating in the interior. Any mobile devices (vehicles) can be equipped with a GPS module for location, but in areas with high density in the building interior or city centers a location using GPS is not suitable due to insufficient signal. The solution for these sites can be seen in use of existing WiFi inf...

The 2.4 GHz frequency band is used by various devices, including WiFi, microwave ovens and Bluetooth. For WiFi devices, it is desirable to have information about occupancy of the spectrum available to select optimal channels and to predict link performance. As only few devices are capable of acquiring such information, devices may share it. However, using these information only makes sense if t...

We present and evaluate a procedure that utilizes mobility and throughput prediction to prefetch video streaming traffic in integrated cellular and WiFi networks. Our evaluation is based on trace-driven simulation considering empirical measurements and shows how various parameters influence the performance, in terms of the number of paused video frames and the energy efficiency; these parameter...