The wireless industry sets radio frequency and data transfer standards for wireless local area network computer communication. These standards are developed by the Institute of Electrical and Electronics Engineers, or IEEE. There are currently four standards for wireless computing: Wireless-A, Wireless-B, Wireless-G, and Wireless-N. Wireless-A (802.11a) Operates at the frequency of 5GHz, which is less crowded than 2.4GHz where telephones and microwaves may cause interference. Although the speed is up to 54Mbps, the maximum range is only 75 feet. Wireless-A is incompatible with both Wireless-B and G because it operates at a different frequency. Wireless-B (802.11b) Operates on the 2.4GHz frequency band and can transmit data at speeds of up to 11Mbps within a range of up to 100-150 feet. Wireless range can be affected by reflective or signal-blocking obstacles, such as mirrors, walls, devices and location, whether indoors or outdoors. Wireless-G (802.11g) Features the same benefits as Wireless-B, but offers 5X the speed at up to 54Mbps. Wireless-G currently offers the best combination of performance and value. Wireless-G is compatible with Wireless-B equipment, but you will lose the higher performance speeds of Wireless-G. Wireless-N (draft 802.11n) The current generation of high-speed wireless networking, capable of delivering the range and capacity to support today's most bandwidth-hungry applications like streaming video. Wireless-N builds on the previous wireless standards by adding multiple-input multiple-output (MIMO) technology. Wireless-N is a draft standard, meaning The Institute of Electrical and Electronics Engineers has not yet adopted it. However, computer manufacturers and many other companies are marketing products with the expectation that it will soon become the new standard. Dual-Band Wireless-N (draft 802.11n) Dual-band routers are compatible with both 2.4GHz and 5GHz frequencies. Non-concurrent dual-band routers only allow usage in one of the frequency bands during set up and configuration. In a concurrent (or simultaneous) dual-band router both radio bands work at the same time, substantially expanding the available channel bandwidth and allowing more data flow. Wireless Comparison Chart The chart below outlines the differences and features for each wireless standard, along with the activities that are best suited for each one.
|