Wireless LANs: The Latest Technology

Wireless local area networks (LAN) have transformed over the years. LANs began as a central hub with several cable connections to a network of computers. The LAN has since transformed to a wireless connection between a hub and a network of computers. The wireless LAN operates based on similar technology to wireless mobile devices. In most instances, a “hand off” from hub-to-hub is not required unless moving a significant distance within a building. Wireless LANs have enabled computer users to receive an Internet connection in a moving vehicle, high speed train and airplane.

The price of wireless local area networks has also improved, along with security, performance and manageability. Wireless LANs also afford a certain level of scalability. They connect multiple users to the Internet with minimal effort. WLANs must support a certain amount of traffic and services to corporations and other organizations. This significantly reduces setup time and IT costs.

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Corporations are allocating large investment sums towards the concept of virtualization. Servers are virtualized, and applications are virtualized. Experts contemplate the idea of wireless LAN virtualization. The solution, however, is not simple or straight forward. Experts in the field have discovered that the traffic that flows through the WLAN to the centralized controller must be minimized. Blue Socket produces a virtual wireless LAN. They achieve this concept by virtualizing the controller software. Virtualization allows companies to add capacity as needed and also lower acquisition costs.

As fiber technology and wireless technology improves so does the speed of the wireless LANs. Wireless LANs are based upon 802.11 technology. The 802.11b and 802.11g technology account for the new United States Federal Communications Commission Rules and Regulations. Most 802.11a uses the 5 GHz U-NII band which offers nearly 20 channels that do not overlap. This is a considerable difference from the three offered in the 2.4 GHz ISM frequency band.

Ultra wideband (UWB) is a wireless technology used to transmit digital data. This technology is typically characterized by transferring large sums of data over low power frequency bands for short distances. The distance is typically 230 feet or less. This technology may be beneficial for use with wireless LANs and Bluetooth devices. The transmitter and receiver must be coordinated to receive pulses within trillionths of a second. Since the ultra wideband signal requires less power, there is little to no background noise or interference associated with this technology. Interference may cause interruptions in the connection established between the computer and the hub. Special chip technology enables the data to be transferred at 1.25 million bits per second.

Ultra wideband technology may be used in the home or office. This technology may complement long range radio technology. Examples of this technology includes WiFi, WiMAX and cellular wide area communications. When used in this type of application, the technology is used to relay data from a host device up to 30 feet. UWB usually operates in a range from 3.1 GHz to 10.6 GHz. The power range is typically limited to -41dBm/MHz.

Wireless LANs just keep getting faster and better. Businesses and consumers are awaiting the next improvements in wireless LAN technology.