Definition

Bluetooth 2.0+EDR

Part of the Wireless and mobile glossary:

Definition - What is Bluetooth 2.0+EDR

Bluetooth 2.0+EDR and Bluetooth 2.1+EDR are specifications for short-range wireless data exchange. Both Version 2.0 and 2.1 support EDR (Enhanced Data Rate), a faster PSK modulation scheme capable of transmitting data 2 or 3 times faster than previous versions of Bluetooth. 

Version 2.1+EDR is built to be more secure and make man-in-the-middle (eavesdropping) attacks more difficult. Connecting, which is called "pairing" is easier than in previous versions. In version 2, a Bluetooth device will make a connection automatically and all the end user has to do is confirm the connection.  Version 2 also allows multiple Bluetooth connections at the same time. 

A feature called Sniff Subrating extends battery life by reducing the active duty cycle of Bluetooth devices like keyboards and mice to improve battery life. Bluetooth hosts can specify maximum transmit and receive latencies so that low-power devices can know how often they must exit and re-enter "sniff mode." This can result in up to five times the battery life experienced by older low-power Bluetooth devices.

Specifications Bluetooth 1.0 Bluetooth 1.2 Bluetooth 2.0+EDR
(enhanced data rate)
Bluetooth 2.1+EDR
(enhanced data rate)
Bluetooth 3.0 HS
(high speed)
Transmission rate 721 kbit/s 721 kbit/s 2.1 Mbits/s 3 Mbits/s 24 Mbit/s
Adopted 2002 2005 2004 2007 2009
Backward compatible yes yes yes yes
Simple Secure Pairing yes yes yes yes
Near Field Communication yes yes
Sniff Subrating yes yes
802.11 Protocol Adaptation Layer (PAL) yes
Standard PAN range     10 meters (33 feet) 10 meters (33 feet) 10 meters (33 feet)

You can find the complete Bluetooth specifications listed here.

Learn more:

Bluetooth 2.0+EDR is a common specification for laptop computers

This was last updated in March 2010
Posted by: Margaret Rouse

Related Terms

Definitions

  • smartphone sensor

    - A smartphone sensor is any one of a number of different types of sensing devices installed on a user's phone to gather data for various user purposes, often in conjunction with a mobile app. (WhatIs.com)

  • vehicle-to-vehicle communication (V2V communication)

    - Vehicle-to-vehicle communication (V2V communication) is the wireless transmission of data between motor vehicles. The goal of V2V communication is to prevent accidents by allowing vehicles to send ... (WhatIs.com)

  • predictive text

    - Predictive text is an input technology that facilitates typing on a mobile device by suggesting words the end user may wish to insert in a text field. (WhatIs.com)

Glossaries

  • Wireless and mobile

    - Terms related to wireless and mobile technology, including definitions about consumer mobile technology devices and communication technologies such as Wi-Fi, WiMAX and LTE.

  • Internet applications

    - This WhatIs.com glossary contains terms related to Internet applications, including definitions about Software as a Service (SaaS) delivery models and words and phrases about web sites, e-commerce ...

Ask a Question. Find an Answer.Powered by ITKnowledgeExchange.com

Ask An IT Question

Get answers from your peers on your most technical challenges

Ask Question

Tech TalkComment

Share
Comments

    Results

    Contribute to the conversation

    All fields are required. Comments will appear at the bottom of the article.