A Glance At Bluetooth Technical Operations
Bluetooth technology is one of high speed and low power consumption that is constructed to connect cellular phones or other portable devices together with very little to no effort at all on the user's part. Bluetooth, unlike infrared technology, does not require any line of site positioning for it to work.
Current generation prototype circuit boards measure only a mere 0.9 cm square, and there are circuit boards in the development phase that are much smaller than that even.
When a device using Bluetooth is activated and comes in contact with another Bluetooth device, they will automatically communicate an address and capability details with one another. After this takes place, they may then create a 1 MB transfer link to further communicate. The Bluetooth protocols being used are able to communicate both voice and data information with a very versatile topography.
The devices that are available today reach their goal by placing small, non expensive tranceivers inside. The radios work on the 2.45 GHz frequency band. They may also support up to 721 KBps, as well as 3 separate voice channels.
Each device using Bluetooth offers a distinct 48 bit address from the standard (IEEE 802). Connections can operate as point to point or in multipoint format. The standard maximum range is only 10 meters, but can easily be lengthened to 100 meters by giving an increase in power. Bluetooth devices also use a technique called frequency hopping, which allows them to change frequencies and avoid radio interference.
The most important thing to keep in mind is that although this technology may seem complex and strenuous, battery drain is very minimal. The specs target the devices' power consumption, which limits the battery drain. The radio chip only consumes 0.3mA when in stand by. That's less than five percent of battery use in today's standard phones.
Bluetooth technology can guarantee a strong security at the bit level. Verification and authentification is monitored by the user with a 128 bit key. Anything up to 128 bits can easily be coded by the radio signals. This along with frequency hopping makes this technology very difficult to listen in on.
A combination of circuit and packet switches make up what's called the baseband protocols. Synchronous packets may be reserved also. Each of the packets may be transmitted within different hop frequencies. Usually, a single packet only covers a single slot, but they can be lengthened to cover up to five.
Bluetooth technology may also support data channels. These data channels supported may at times be up to 3 voice channels at once. This makes it simple to transfer data while talking simultaneously. Each voice channel can support up to 64kb at once.
Bluetooth is very difficult to compete with, mostly because of how different it is (technically comparing to other technologies such as infrared). For communicating in a hurry, Bluetooth is definately the world's best method to use!