Bluetooth Version 2.0 + EDR (Enhanced Data Rate)
There may be multiple communication technologies, but they all share one thing in common: Faster is better. The Bluetooth SIG realized this, and worked on improving the speeds of Bluetooth version 1.2. Bluetooth version 2.0 + EDR was announced by the Bluetooth SIG in June 2004 and began appearing in Bluetooth devices in late 2005.
Bluetooth version 2.0 + EDR delivers data transfer rates up to three times faster than the original Bluetooth specification. Bluetooth version 2.0 + EDR also provides enhanced multiple-connectivity. With Bluetooth 2.0 + EDR, users will be able to more efficiently run multiple Bluetooth devices at the same time. As a result, Bluetooth Personal-Area Networks (PAN) or Piconets will become more common.
For example, users will have the ability to synchronize a Bluetooth enabled computer with a Bluetooth PDA, and at the same time they can listen to music using a pair of Bluetooth wireless headphones.
Here is a listing of the main enhancements/features you will find with Bluetooth Specification Version 2.0 + EDR:
* Backward compatible with previous Bluetooth versions
* Three times faster transmission speed (10 times in some cases)
* Enhanced data rate of up to 3 Mbps
* Lower power consumption due to reduced duty cycles
* Broadcast/multicast support
* Simplification of multi-link scenarios due to more available bandwidth
* Distributed media-access control protocols
* Further improved Bit Error Rate performance
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