The recent advances in mobile and ubiquitous computing, and the development of inexpensive, portable devices are extending the application fields of ad hoc networking far beyond the traditional view of stand-alone networks. Indeed, it is now recognized that a prerequisite for the commercial penetration of the ad hoc networking technologies is an easy access to the Internet and its services, and...

Performance of the TCP (Transmission Control Protocol) has been promising in wired networks. In wired network the packet loss is due to congestion. But the performance of TCP has degraded in wireless network where packet loss is not only due to congestion but to be also due to high bit error rates and handoffs. In this paper we review four methods to improve TCP performance taking mobile handof...

Wireless networks have recently been gaining widespread deployment and they can be easily attacked as compared to wired networks. CERT statistics reports state that the amount of intrusions on network has excessively increased year by year. With the increasing amount of network throughput and security threat, the study of intrusion detection systems (IDSs) has received a lot of attention throug...

Conventional data centers, based on wired networks, entail high wiring costs, suffer from performance bottlenecks, and have low resilience to network failures. In this paper, we investigate a radically new methodology for building wire-free data centers based on emerging 60GHz RF technology. We propose a novel rack design and a resulting network topology inspired by Cayley graphs that provide a...

In the next generation wireless sensor networks system, various wireless technologies and wired networks in together, in order to meet the various needs of users. Our focus in this paper is to introduce a few design goals, different wireless/wired networks complement each other, thus help users to access the best network in accordance with the current business. Each network is different with ea...

With the proliferation of mobile and wireless computing devices, the demand for continuous network connectivity exits for various wired-and-wireless integrated networks. Since Transmission Control Protocol (TCP) is the standard network protocol for communication on the Interne, any wireless network with Internet service need to be compatible with TCP. TCP is tuned to perform well in traditional...

Future access network architectures should exhibit reliability while providing broadband Internet services. Progress on research and development of reliable wired and wireless access networks is discussed in this paper. Some emerging access network architectures and their reliability issues are explained.

With the evolution of QoS-capable third generation wireless networks, the wireless network community has been increasingly looking for a framework that can provide an effective, network independent, end-to-end QoS control. In this paper, we first construct such a framework and then describe how dynamic SLA-based control can be used to achieve end-to-end QoS in a wired and wireless (UMTS) enviro...

– This paper is dedicated to on-going research activities in the field of wireless metropolitan and wide area networks with Quality-of-Service (QoS) guarantees. We focus on self-organizing systems, so-called adhoc networks, which can operate without any wired infrastructure (e.g. cellular base stations) – except for some interface points providing interconnectivity to other networks like the Pu...

In this paper, we study the traffic optimization problem for a heterogeneous traffic network by considering utility functions of data and voice traffic. We also study the performance of multimodal networks, where other modes of communication like wires, infrared links may operate in addition to wireless nodes to improve the performance of the wireless network. We assume the presence of an addit...