There are number of Bluetooth versions which all are being developed to meet the particular requirements of the time. They come with different specifications to offer different options to the users. I think we all need to know about various versions of Bluetooth so that whenever pairing one Bluetooth enabled device with another Bluetooth headset we don’t face any kind of difficulty. All the updated versions of Bluetooth offer backward version compatible. This means whichever newer version you are using then it is compatible with the older version as well.
Special Interest Group (SIG) of Bluetooth technology, which is a body who supervises the development of the technology, released Bluetooth version 1.2 in the year 2003 and later on after one year it released version 2.0 to abolish radio frequency interference by frequency hopping technology and also added security to guard against snooping and tracking.
Bluetooth 2.0 provided higher connection speed than version 1.2, which was less power consuming and even performed much better than the version 1.2. Later on version 2.1 was released in 2007, which provided more data transmission security, even less power consuming than version 2.0 and improved the pairing system which did not require any PIN. Then in 2009, Bluetooth 3.0 came with the ability to use Wi-Fi connections which brought more speed in data transmission. Now the most recent version of Bluetooth is the version 4.0 which is really a Low Power Consuming version with strong power management skills. Let us take a glance at the different specifications of different versions of Bluetooth.
- Backward compatible with v1.1, faster connection and discovery.
- Recovered confrontation to radio frequency interference by avoiding the use of crowded frequencies in the hopping sequence.
- Data transmission speed up to 721 kbit / s.
- Backward compatible with the previous v1.2.
- Enhanced Data Rate (EDR) for faster data transfer.
- The nominal rate of EDR is about 3 Mbit / s
- Backward compatible with v1.2.
- Uses secure simple pairing (SSP) to improve a better pairing experience for Bluetooth devices.
- Uses sniff sub rating, which reduces the power consumption in low-power mode.
- Backward compatible with v2.1.
- Bluetooth 3.0 provides theoretical data transfer speeds of up to 24 Mbit / s.
- For high data rate traffic this version uses the adjacent 802.11 link.
- Backward compatible with v3.0.
- Provides faster speed in data transmission than the earlier version.
- It comes with greatly reduced power consuming, as if it does not require any power at all to function.
- It provides more security in data transmission than the earlier version.
Bluetooth technology is developing from day to day and one major feature of any version is just making the newer version superior over the earlier version. However more updated versions of Bluetooth technology will be keep on coming in future to meet all the requirements of the users.