Wireless networks and types
- 2. What is Wireless Network A wireless network enables people to communicate and access applications and information without wires. This provides freedom of movement and the ability to extend applications to different parts of a building, city, or nearly anywhere in the world. Wireless networks allow people to interact with e-mail or browse the Internet from a location that they prefer.
- 3. Types of Wireless Networks WLANS: Wireless Local Area Networks WPANS: Wireless Personal Area Networks WMANS: Wireless Metropolitan Area Networks WWANS: Wireless Wide Area Networks
- 4. Wireless Local Area Networks WLANS allow users in a local area, such as a university campus or library, to form a network or gain access to the internet. A temporary network can be formed by a small number of users without the need of an access point; given that they do not need access to network resources.
- 5. Wireless Personal Area Networks The two current technologies for wireless personal area networks are Infra Red (IR) and Bluetooth (IEEE 802.15). These will allow the connectivity of personal devices within an area of about 30 feet. However, IR requires a direct line of site and the range is less.
- 6. Wireless Metropolitan Area Networks This technology allows the connection of multiple networks in a metropolitan area such as different buildings in a city, which can be an alternative or backup to laying copper or fiber cabling
- 7. Wireless Wide Area Networks These types of networks can be maintained over large areas, such as cities or countries, via multiple satellite systems or antenna sites looked after by an ISP. These types of systems are referred to as 2G (2nd Generation) systems
- 8. Type Coverage Performance Standards Applications Wireless PAN Within reach of a person Moderate Wireless PAN Within reach of a person Moderate Bluetooth, IEEE 802.15, and IrDa Cable replacement for peripherals Cable replacement for peripherals Wireless LAN Within a building or campus High IEEE 802.11, Wi-Fi, and HiperLAN Mobile extension of wired networks Wireless MAN Within a city High Proprietary, IEEE 802.16, and WIMAX Fixed wireless between homes and businesses and the Internet Wireless WAN Worldwide Low CDPD and Cellular 2G, 2.5G, and 3G Mobile access to the Internet from outdoor areas Comparison of Types