From M/Cyclopedia of New Media
WIRELESS NETWORKS
Definition
- The term wireless network refers to networks which offer the ability to be connected to the internet and other networks without the necessity of wires. It is described as the “unwiring of connectivity and the implicit untethering of hardware from local cabling�?.(Alexander, 2004)
Overview
- Given its nature, the functionality and success of Mobile learning has in many ways become dependent on wireless networks. The term ‘M-learning’ however does not necessarily imply wirelessness. For instance, “I may carry a Palm without connectivity and be mobile but not wireless�?. (Alexander, 2004) Wireless networks enable technologies to function in differing geographic and climatic environments. They allow for immediate two way global communication and the global release of information.
Types of Wireless Networks
- “Wireless networks operate on the same hierarchy as their wired counterparts; small networks of three or more devices are referred to as Wireless LANs (WLANs), while the global wireless network is referred to as the wireless Internet.�? (http://www.pdamd.com/vertical/features/wireless_4.xml) Other basic types of wireless networks include: Wireless Personal Area Network (WPAN), the Wireless Metropolitan Area Network (WMAN), and the Wireless Wide Area Network (WWAN)
- WPAN: - This specification provides for low-power, short-range connectivity between mobile devices and the Internet. In this network, as the devices move, the network moves. It has a range of 20-350 feet depending on interaction type and geographic location.
- WLAN:- WLAN’s use ‘electromagnatic waves’ to enact communication between devices. WLAN’s allow for communication in a limited area only. As devices roam freely, the coverage areas remain static.
- WWAN:- WWANs generally use digital cellular phone networks to enable technologies to access the Internet from a wide range of areas.
Benefits of Wireless Networks
- In the instance of educational institutions, Wireless Local Area Networks (WLAN)are used most commonly and culminate several benefits including:
- - Allows use of technology anywhere, anytime on campus indoors or out.
- - Provides instantaneous communication among students, staff, and faculty.
- - Reduces costs and maintenance for the existing landline phone system and streamlines academic institutions’ telecommunications operations.
- In terms of classroom situations, wireless networks allow students to conduct further research into any areas upon their own accord and allows for more freedom and individual initiatives. (Alexander, 2003)
References
- Alexander, B. (2004) 'Going Nomadic: Mobile Learning in Higher Education' in Educause Review Ed:September/October 2004 retrieved from Proquest.
- Alexander, B. (2003) 'Teaching in the Wireless Cloud' retrieved from www.thefeaturearchives.com/35265.htm Accessed 26 October 2005.
- Fisher, J and Wang, R. (2005) 'Wireless Networks' retrieved from http://www.pdamd.com/vertical/features/wireless_4.xml Accessed 21 October 2005.
Jasmine McCormack 09:41, 28 Oct 2005 (EST)
