One type of wireless networking that doesn’t receive much attention is infrared wireless. Infrared wireless uses the same basis transmission method as many television remote controls, infrared technology. Infrared is used primarily for short distance, point-to –point communications, like those between a peripheral and a PC. The largest use of infrared wireless is for peripherals using the 1rD standard.
1rDA stands for Infrared Data Association, which is the standards body that develop the 1rDA standard for point-to-point, peer-to-peer communications over infrared radiation. Infrared equipment that uses the 1rDA standard can be found in many places, including cell phones, handheld PDAs and computers, keyboards, and so on.
The standard specifies a data transmission rate of 16 Mbps (that will soon be increased to over 100 Mbps with updates to the standard) and a maximum range of about 1 meter (1m). As you can see, although it possessed significant throughput, the range is lacking for a wireless LAN standard for large LANs.
One of the newest wireless standards is the wireless networking standard known as Bluetooth. It was designed to replace the myriad Cords on an average computer user’s desk. Cords for thins like keyboards, mice, and headphones can all be eliminated. The standard allows for these many different type of peripherals to all be able to communicate wirelessly with a host device, like a computer. For example, a popular Bluetooth accessory is the wireless headset for celluar phones. It’s battery powered and will communicate directly with the phone wirelessly.
Bluetooth has a total maximum throughput of 1Mbps. It isn’t a speed demon as far as throughput is concerned, but it is still more than enough for peripheral communications like mice, keyboards, and headphones, and it is possible for two Bluetooth devices to network to each other in a peer-to-peer fashion. But, as with infrared, it is impractical to build an entire multistation wireless LAN using the Bluetooth technology.