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Wireless Networking Standards (WLAN, WPAN, WMAN, WWAN)
Published in K.R. Rao, Zoran S. Bojkovic, Dragorad A. Milovanovic, Wireless Multimedia Communications, 2018
K.R. Rao, Zoran S. Bojkovic, Dragorad A. Milovanovic
The IEEE approved the 802.16e standards effort with the intent of increasing the use of broadband wireless access by taking advantage of the inherent mobility of wireless media. The 802.20 interface seems to provide real-time data transmission rates in WWAN to speeds that rival DSL and cable connections (1 Mbps or more) based on cell ranges of up to 15 km or more. It plans to deliver those rates to mobile users even when they are traveling at speeds up to 250 km/hour. This makes 802.20 an option for deployment in high-speed trains. The 802.16e project authorization request specifies only that it will support user terminals moving at vehicular speeds. 802.16 is looking at the mobile user walking around with a PDA or laptop, whereas 802.20 will address high-speed mobility issues. Some argue that 802.20 is a direct competitor to 3G wireless cellular technologies.
Wireless Network Security
Published in Kutub Thakur, Al-Sakib Khan Pathan, Cybersecurity Fundamentals, 2020
Kutub Thakur, Al-Sakib Khan Pathan
The wireless wide area network (WWAN) is the wireless network spread over large area of operation. The main examples of WWANs include the 2G, 3G, 4G, and 5G networks. All mobile broadband networks are the examples of wide area networks. The WWANs can be classified into two sections as listed below: Circuit-switched data networkPacket-switched data network
Wireless Networks
Published in Jiguo Yu, Xiuzhen Cheng, Honglu Jiang, Dongxiao Yu, Hierarchical Topology Control for Wireless Networks, 2018
Jiguo Yu, Xiuzhen Cheng, Honglu Jiang, Dongxiao Yu
WWAN refers to the wireless network covering national or global scope providing a wider range of wireless access. Compared with WPAN, WLAN and WMAN, it emphasizes fast mobility with the transmission rate of about 3 Mbps. IEEE802.20 is an important standard for WWAN.
Compact multiservice monopole antenna for tablet devices
Published in International Journal of Electronics, 2018
Sangeetha Subbaraj, Malathi Kanagasabai, Mohammed Gulam Nabi Alsath, Geetha Ganesan, Yogeshwari Panneer Selvam, Saffrine Kingsly
Several antennas for LTE/GSM antenna are designed for tablet devices (Wong & Liao, 2009; Wong, Kang, Chou, & Hsu, 2011; Wong & Lin, 2012; Chow, Yung, & Hui, 2001). However, it has larger size, limited frequency bands and 3D structures. Compact antenna with frequency reconfiguration is proposed in Ban, Sun, Li, Li, and Kang (2014) for LTE/WWAN applications. In Wong and Chen (2014), hybrid feeds are employed to simultaneously achieve compactness and multiband operation. However, in Ban et al. (2014) and Wong and Tsai (2014), matching circuits and lumped elements are required for proper impedance matching and optimum antenna performance. As seen in Chang and Liao (2012) and Wong and Ma (2012), lumped elements will decrease the efficiency of the antenna. Some other low frequency multiband antennas are proposed by Alsath and Kanagasabai, 2014a; Pakkathillam, Kanagasabai, Varadhan, and Sakthivel, 2013; Roseline, Malathi, and Shrivastav 2011.