The wireless industry is rapidly transitioning from proprietary architecture to more flexible, cost effective open wireless architecture (OWA) systems. This transition is creating interesting challenges for developers, manufacturers, integrators, operators and end-users as they wrestle with complexities of open wireless systems. Fourth Generation (4G) Mobile Communications should not focus only...

Vehicular communications have received a lot of attention in recent years due to the demand for applications to improve safety and travel comfort. Nowadays, IEEE 802.11p seems to be the best positioned standard for providing safety services. However, for non-safety services, which usually do not present tight time restrictions but require high data transfer rates, other wireless communication s...

The novel wireless network architecture forces a demanding performance requirement on the radio resource to provide broadband internet access. The Communication industry has been preparing new standards to efficiently transport high speed broadband mobile access in a solitary air interface and network architecture at little cost to operators and end users. Two standards, IEEE 802.16 (WiMAX) and...

In the recent years, the web and VoIP services has motivated the development of new broadband access technologies due to the increased demands for faster connection [12]. For the upcoming generation, IEEE 802.16 standard, WiMAX (Worldwide Interoperability for Microwave Access Forum) has become the most potential wireless access technology. WiMAX uses a common MAC protocol to incorporate the set...

Wireless telemedicine, also referred to as mobile health, which capitalizes on advances of wireless technologies to deliver health care and exchange medical knowledge anywhere and any time, overcomes most of geographical, temporal, and even organizational barriers to facilitate remote diagnosis and monitoring, and transfer of medical data and records. In this article we investigate the applicat...

Worldwide Interoperability for M i c r o w a v e Access, better known as WiMAX, is a standardsbased wireless technology for providing highspeed, last-mile broadband connectivity to homes and businesses as well as for mobile wireless networks. With the fixed version of WiMAX, based on IEEE 802.16-2004, transmissions can potentially carry data traffic over more than 30 miles (~50 km) in rural are...

The field of technology known as Mobile Multimedia Communications has received much attention since the late 1990s and many research efforts have targeted this area for more than ten years. With the launch of the 3G mobile network in 2001, the last ten years can be characterized as the dawn of mobile multimedia communications. With the rapid growth in various types of mobile infrastructure such...

Security support is mandatory for any communication networks. For wireless systems, security support is even more important to protect the users as well as the network. Since wireless medium is available to all, the attackers can easily access the network and the network becomes more vulnerable for the user and the network service provider. Worldwide Interoperability for Microwave Access (WiMax...

Authors have proposed a Novel Combined hybrid Architecture for various vehicular communication scenarios to the advancement of deployed Intelligent Transportation System (ITS). In our Scenario, the existing Dedicated Short Range Communication (DSRC) (IEEE 802.11 p) and Mobile WiMAX (IEEE 802.16 e) acts as an onboard Unit (OBU). As OBUs move between communication range, Vehicle exchange informat...