The three items of concern for wireless wide area network (WWAN) links are identified in the chapter.
In terms of communication technology, wireless local area network (WLAN) or WiFi [1], wireless wide area network (WWAN) [2], or their combination [3] can be used in vehicular environments.
Mobile WiMAX[2] is the current revision of WiMAX, and is based on the 802.16-2009 revision[3] to the IEEE 802.16-2004 release of Wireless Wide Area Network.
A large part of these machines will be covered by some wireless wide area networks.
Depending on the coverage, wireless networks can in general be divided into five different categories, including wireless regional area networks (WRANs), wireless wide area networks (WWANs), wireless metropolitan area networks (WMANs), wireless local area networks (WLANs), and wireless personal area networks (WPANs).
Access links are often times the bottlenecks of wireless wide area networks (WWAN).
Heterogeneous networks based on Wireless Local Area Networks (WLANs) and Wireless Wide Area Networks (WWANs) can combine their respective advantages on coverage and data rates, offering a high Quality of Service (QoS) to mobile users.
To provide these notifications in real time, the wireless wide-area network modules from Novatel Wireless securely connect through HSDPA and EV-DO networks to the Microsoft Exchange Server, storing user information and filter policies.
From the performance of a full range of engineering, construction and installation services, this division continues to incorporate emerging technologies in business systems integration and local and wide area network installation as well as wireless services.
Today, with the emergence of advanced technologies such as wireless local and wide area networks, the number of wireless-VoIP connections has grown substantially [13, 14].
