Wibree

Govind Raj

DEFINITIONDEFINITION

Wibree is a radio technology which consumes only a fraction of the power compared to other such radio technologies to achieve the Bluetooth solutions.

What is Wibree?

power applications

Enables smaller and less costly implementationsto achieve Bluetooth

solutions.

New radio technology for ultra low

Open industry initiative

First technology offering

connectivity between mobile devices

or personal computers and small,

button cell battery power devices like

watches,wireless keyboards,toys etc.

Contd…

Why is Wibree needed?

Ultra low power cannot be achieved with existing open standards

Currently available standardized

local connectivity technologies are

not optimized for ultra low power

applications.

Wibree implementations:

There will be two types of Wibree implementations-

Wibree stand-alone chip

Wibree-Bluetooth dual-mode chip

Wibree stand-alone chip:Wibree stand-alone chip:

For small devices (like heart-rate monitors) using only short data messages and having long battery life.

Examples: watches, sports and wellness devices and human interface devices (HID) such as wireless keyboards.

Wibree-Bluetooth dual-mode chip:Wibree-Bluetooth dual-mode chip:

Designed for use in Bluetooth

devices.

This allows Bluetooth devices to

connect to a new range of tiny

battery-powered devices.

Examples of devices are mobile

phones and personal computers.

Wibree and Bluetooth

Bluetooth is a great technology and brand, adopted worldwide

Bluetooth is widely used in mobile devices like PC’s and phones, as well as in wireless headsets. However, other products relying on button cell batteries as a source of power, e.g. watches, toys and human interface devices, are not served effectively by Bluetooth.

similarities

Wibree and Bluetooth use

the 2.45 GHz band to transfer data

and have a 1 Mbps transfer rate

and a range of about 10 meters

(m). In Wibree-Bluetooth dual-

mode they share the components

like antenna.



Wibree is ultra low power technology

The maximum transmitted output power

of Bluetooth class is 4dBm(~ 2.5 mW). The

total power consumption is much higher. The

output power of Wibree standard will be

around -6dBm. Each manufacturer will

determine its own transmit power.

Technologies comparison:

Advantages:Advantages:

Ultra-low power consumption

Long battery life

Use same frequency of Bluetooth

(2.4GHz)

Small chip size

10 times more energy efficient than

Bluetooth

Inexpensive implementation

Easily integrated with Bluetooth

solutions

Disadvantage:Disadvantage:

Data transmission is very

slow, i.e. only 1Megabit per

second

Cannot be used in high

bandwidth required

applications

CONCLUSIONCONCLUSION From this we conclude that wibree will

dramatically extend the battery life time of existing wireless devices.

It’s up to 10 times more energy efficient than Bluetooth.

Today wibree is not only the nokia solution it is being supported by the major Bluetooth chip vendors including Cambridge silicon radio and Broadcom. That means it will reside within the chips in almost every brand of handset.

In the end of 2009 there was over 100 millions wibree enabled handsets in existence.

Technology

Wibree