In order to cope with the environmental impacts onBluetooth data transmission diversity techniques wereexamined. A Bluetooth antenna diversity demonstratorwas developed. Extensive experimental investigationsdocumenting the significant improvements of ...

Providing differentiated Quality of Service (QoS) over unreliable wireless channels is an important challenge for supporting several future applications. We analyze a model that has been proposed to describe the QoS requirements by four criteria: traffic ...

Wireless sensor networks (WSNs) form a unique class of ad hoc networks consisting of heterogeneous but highly resource-constrained devices that can sense their environment and report sensed data to designated nodes in the network. We present a holistic ...

In this talk we study the issue of cross-layer design for rate control in multihop wireless networks. We have developed an optimal cross-layered rate control scheme that jointly computes both the rate allocation and the stabilizing schedule that controls ...

The most important technical challenge for the realization of 4G mobile networks is twofold: (a) to overcome the highly frequency-selective fading channel and (b) to significantly reduce the transmit power from mobile terminals. Recently, it has been ...

In order to create secure and dependable systems and information intelligence, it is a major challenge to determine the security level of the network. This security level depends on a number of dynamically changing factors including emerging of new vulnerabilities ...

The Internet offers a host of high-quality research material in computer science---and, unfortunately, some very low quality resources as well. As part of learning the research process, students should be taught to critically evaluate the quality of ...

Vendors have started releasing the first products certified as complying with the IEEE's fast, long-range mobile WiMax standard. Proponents hope mobile WiMax will compete with cellular, Wi-Fi, and last-mile Internet-access technologies

Proxy caching is a commonly accepted methodology used to reduce Internet traffic, decrease back-end related user delays, and generally improve web performance. Nevertheless, it seems to be inadequate when it comes to caching dynamic web pages, due to ...

Dynamic data replication improves data accessibility in mobile ad hoc networks. In our previous works, we proposed few methods to manage locations of replicas and efficiently forward access requests to the locations. In this paper, we extend these methods ...

As service providers move more applications to their IP/MPLS (Multiple Protocol Label Switching [1]) backbone networks, rapid restoration upon failure becomes more and more crucial. Recently MPLS fast reroute has attracted lots of attention as it was ...

A review of Mobile Applications: Architecture, Design, and Development by Valentino Lee, Heather Schneider, and Robbie Schell.

This dissertation investigates two research problems to protect wireless network topology and routing: (1) designing protocols with configurable overhead to defend against wormhole attacks; (2) designing an intruder identification mechanism ...

This paper presents an analysis of the control overhead involved in clustering and routing for one-hop clustered mobile ad hoc networks. Previous work on the analysis of control overhead incurred by clustering algorithms focused mainly on the derivation ...

In this work, we discuss some resource optimization problems in wireless and optical networks. In chapter 1, we consider Minimum Strongly Connected Dominating and Absorbent Set (MSCDAS) problem in a heterogeneous wireless ad-hoc network, where nodes ...

Tourism is one of the major sources of income for many countries. Therefore, providing efficient, real-time service for tourists is a crucial competitive asset which needs to be enhanced using major technological advances. The current research has the ...