Bluetooth is a wireless communication protocol. Bluetooth is used to communicate to two or more other Bluetooth-capable devices.
Bluetooth Vs Infrared
Of course, wireless communication between two computers is not new. PDAs have been able to do that for years using infrared technology. One drawback to infrared is that the devices involved must be a few feet apart, and most importantly, the infrared transceivers must see each other "eye to eye." If either of those conditions are not met, then the transmission will fail. Bluetooth overcomes the first limitation by having a nominal range of about 10 meters (30 feet). Bluetooth overcomes the second limitation because it works like a radio, so transmissions are omnidirectional. Consequently, there are no line-of-sight issues when communication occurs between two Bluetooth devices.
Bluetooth Vs. 802.11b
If you've heard of Bluetooth before, then you've certainly heard of 802.11b (the wireless LAN protocol), another wireless communication protocol. Bluetooth and 802.11b were created to accomplish two different goals, although both technologies operate in the same frequency band: 2.4 GHz.
The goal of the wireless LAN(802.11b) is to connect two relatively large devices that have lots of power at high speeds. Typically, this technology is used to connect two laptops within 300 feet at 11 Mb/s. This technology is also useful for network administrators who want to extend their LAN to places where it is either expensive or inconvenient to run cables.
On the other hand, Bluetooth is intended to connect smaller devices like PDAs and mobile phones within a range of 30 feet at a rate of 1 Mb/s. Slower data rates and shorter ranges allow Bluetooth to be a lowpower wireless technology. Compared to 802.11b devices, some Bluetooth devices can easily consume 500 times less power, which can make a huge difference in the battery life of many mobile devices.
Bluetooth is also intended to use as a cable replacement technology. If you have multiple peripherals connected to your computer using RS-232 or USB, then Bluetooth is the ideal solution if you want to use those devices wirelessly.
Bluetooth Vs Infrared
Of course, wireless communication between two computers is not new. PDAs have been able to do that for years using infrared technology. One drawback to infrared is that the devices involved must be a few feet apart, and most importantly, the infrared transceivers must see each other "eye to eye." If either of those conditions are not met, then the transmission will fail. Bluetooth overcomes the first limitation by having a nominal range of about 10 meters (30 feet). Bluetooth overcomes the second limitation because it works like a radio, so transmissions are omnidirectional. Consequently, there are no line-of-sight issues when communication occurs between two Bluetooth devices.
Bluetooth Vs. 802.11b
If you've heard of Bluetooth before, then you've certainly heard of 802.11b (the wireless LAN protocol), another wireless communication protocol. Bluetooth and 802.11b were created to accomplish two different goals, although both technologies operate in the same frequency band: 2.4 GHz.
The goal of the wireless LAN(802.11b) is to connect two relatively large devices that have lots of power at high speeds. Typically, this technology is used to connect two laptops within 300 feet at 11 Mb/s. This technology is also useful for network administrators who want to extend their LAN to places where it is either expensive or inconvenient to run cables.
On the other hand, Bluetooth is intended to connect smaller devices like PDAs and mobile phones within a range of 30 feet at a rate of 1 Mb/s. Slower data rates and shorter ranges allow Bluetooth to be a lowpower wireless technology. Compared to 802.11b devices, some Bluetooth devices can easily consume 500 times less power, which can make a huge difference in the battery life of many mobile devices.
Bluetooth is also intended to use as a cable replacement technology. If you have multiple peripherals connected to your computer using RS-232 or USB, then Bluetooth is the ideal solution if you want to use those devices wirelessly.
1 comment:
1.Is bluetooth different from Infrared merely due to the frequency range of the carrier i.e are the LOS and the distance constraints in case of infrared eliminated simply by increasing the carrier frequency?
2. Why did you choose to compare bluetooth with 802.11b rather than the more sophisticated standard 802.11a?
3.Could you please explain the protocols responsible for lowered data rates in case of bluetooth when compared with the above standards?
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