Difference between Bluetooth versions v1.2, v2.0, v2.1, v3.0,v4.0 and v4.1

This page compares bluetooth versions and provides difference between bluetooth versions v1.2, v2.0, v2.1, v3.0, v4.0 and v4.1. It also provides bluetooth related links.The other useful links to difference between various terms are provided here.

This tutorial section on bluetooth basics covers following sub topics:
Main Page Frequency PHY Layer MAC layer Stack Power classes Security products versions

This technology Bluetooth provides short range wireless capabilities so that two devices can transfer data with each other. Over the years various versions of Bluetooth have been evolved which include v1.2, v2.0, v2.1, v3.0,v4.0 and v4.1. It operates at 2.4 GHz ISM frequency band. The technology is based on IEEE 802.15.1 standard. Both PHY and MAC layers of the Bluetooth is defined in this Wireless Personal Area Network(WPAN) standard.

All the bluetooth versions have different speed and data rate requirements. They are compatible with their previous versions so that device with one version can interoperate with the other version. Bluetooth network is composed of piconets. Each piconet will have one master and one to seven slaves which communicate to one another.

Bluetooth RF and baseband specifications

• Modulation type is GFSK
• Peak data rate is about 1Mbps
• RF Bandwidth is 220KHz and 1MHz
• RF frequency band is 2.4 GHz
• No. of RF carriers are 23/79
• RF carrier spacing is 1 MHz
• 1600 hops/sec frequency hopping
• Time Division Duplex mode
• Transmit power is about 0.1 watt
• distance coverage of up to 10m to 100m
• 7 simultaneous links possible in a star configuration