In network research, network simulators have been shown to be useful for testing and changing network protocols by means of a controlled manner. As an Internet systems simulator, ns-3 simulator provides an ideal simulation environment for network research. However, ns-3 is lack of table-driven IPv4 routing modules. Despite the fact that a routing protocol is a mandatory component of a network, ...

With the recent development of technologies in wireless access and mobile devices, the mobile network has become a key component of today’s Internet vision [1, 46]. Current mobile networks, which are being deployed worldwide, enable mobility features to new applications and also extend existing wired Web applications to mobile terminals. The mobile wireless network offers a rich assortment of d...

Wireless sensor networks can be used to perform structural monitoring. Strain gauges, which can be glued on or integrated to the observed material, are the most common nondestructive sensing elements for measuring surface strain. Wireless strain gauge measurement system makes strain measurements more flexible while opening new targets of application in addition to those that traditional wired s...

of the Dissertation End-to-End QoS Provision over Heterogeneous IP and non IP Broadband Wired and Wireless Network Environments

In the last years have seen a strong increase in the 802.11 wireless local area network (WLAN) technologies use, and the security mechanisms implemented by amendments IEEE 802.11i and IEEE 802.11w have proven not very effective in combating attacks against availability of WLAN services. Intrusion detection systems emerge as a way to help computer networks in this combat against the deny of serv...

In pico-cellular wireless systems such as Bluetooth, a large number of inter-communicating mobile devices can be present in a small area. Piconets are formed in an adhoc manner and may not be connected to the wired network. In this paper, we propose and study policies for design of piconets and inter-piconet communication (in the absence of connectivity to the wired network). We compare the thr...

Toward a new era of “Ubiquitous Networking” where people are interconnected in anywhere and at anytime via the wired and wireless Internet, we have witnessed an increasing level of impromptu interactions among human beings in recent years. One important aspect of these interactions is the Peer-to-Peer (P2P) Networking that is becoming a dominant traffic source in the wired Internet. In these In...

Streaming media in 3G wireless networks means the streaming server must simultaneously adapt the media content to two mediums of drastically different characteristics: an often congested wired network and an unreliable wireless link. To improve the server’s media adaptiveness, we enhance a previously proposed network proxy, located at the junction of the wired network and wireless link, to prov...

Wireless access points act as bridges between wireless and wired networks. Since the actually available bandwidth in wireless networks is much smaller than that in wired networks, there is a bandwidth disparity in channel capacity which makes the access point a significant network congestion point. The recently proposed active queue management (AQM) is an effective method used in wired network ...

We have developed and implemented novel solutions that provide Quality of Service (QoS) support for voice, video and data applications in wired and wireless LANs that can also follow standards such as Ethernet IEEE 802.3 or wireless IEEE 802.11. Since our solutions can transform existing legacy LANs to an environment that provides the bandwidth, time-delay and other requirements needed to provi...