Differences between bluetooth 1.1, Bluetooth 1.2, and Bluetooth 2.0 (Bluetooth 2.0 + EDR)

Bluetooth 1.2 vs 1.1:

1. Adaptive Frequency Hopping (AFH ):Adaptive Frequency Hopping TechnologyThe main function is to reduce interference problems between Bluetooth products and other wireless communication devices.

2. Extended synchronous connection-oriented links (ESCO ):Extended synchronous link-oriented channel technologyIt is used to provide audio transmission with high QoS, and can further meet the needs of higher-level voice and audio products.

3. faster connection: that isQuick connection. The "first FHS" and "interlaced scan" technologies are included to shorten the time for re-searching and re-connection, make the connection process more stable and faster, and make the Bluetooth Product more smooth in use.

4. Compatibility with Bluetooth 1.1: Ensure that it is backward compatible with version 1.1.

 

Bluetooth 2.0 (often referred to as Bluetooth 2.0 + EDR) relative to Bluetooth 1.2:

EDR is used as a supplement in ipvth2.0 specifications. Therefore, we usually see the saying "Bluetooth Core Specification Version 2.0 + EDR:

· Focus on provisionMulti-cast FunctionAllows users to transmit the same information to multiple devices at the same time to improve the availability of multiplayer connected games, multiple stereo headsets, and loudspeakers.

·Data transmission speed can reach 3 times of the Current Rate(Up to 10 times in some cases)

· Reduce energy consumption by reducing the workload cycle (duty cycle)

· Increasing bandwidth simplifies the multi-Connection Mode

· Compatible with previous Bluetooth specifications

· Improves the bit error rate (BER) performance.

Differences between bluetooth 1.1, Bluetooth 1.2, and Bluetooth 2.0 (Bluetooth 2.0 + EDR)