Transcript (Ultra low power connectivity for small devices) By: Parthesha K.N. 8th semester I T.

(Ultra low power connectivity for small devices)
By:
Parthesha K.N.
8th semester I T
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 Ever dreamt of having a WRIST WATCH which
James bond used in his movies???
What is WIBREE?
 Wibree is a new low power, low cost ,
interoperable radio technology for small
devices.
 Wibree complements other local connectivity
technologies, consuming only a fraction of the
power, enabling small, inexpensive
implementations as well as easy integration
with Bluetooth solutions.
 Wibree is the first open technology
offering connectivity between mobile
devices or personal computers, and small,
button cell battery power devices.
 By extending the role, mobile devices can
play in consumers' lives, this technology
increases the growth potential in these
market segments
Wibree fullfills the need for a radio
technology that:
 Allows communication between small
button-cell battery devices and
Bluetooth devices.
 Forms a minimal cost and size addition
to Bluetooth devices such as mobile
phones and PCs.
 Creates smaller and lower cost options
for small button-cell battery devices.
Examples:
(1).Mouse communicating with computer using Wibree
(2).Here the keyboard is communicating with cell phone&
the watch displays the heart beat and the stress applied to the bat.
Need for Wibree
 No standard has been optimized for low
power consumption for low duty cycle
applications
 Several years of battery lifetime on a
coin cell battery
 6 to 12 months battery lifetime on AA or
AAA batteries
Key Features
 Very low power consumption
 Forms a minimal cost and size
 Allows communication between small
battery-powered devices
 Cost efficient implementation with the
present Bluetooth modules
Types of Wibree chips
There are two types:
1. Stand alone mode Wibree
2. Dual mode Wibree
Stand alone mode Wibree :
 Stand alone Wibree chip can
communicate with other stand alone
Wibree chips and/or dual mode chips.
Example for stand alone mode:
Wibree
Dual mode Wibree
 A dual mode chip can communicate with
other stand alone or dual mode Wibree
chips in addition to other Bluetooth
chips
Wibree
Wibree versus Bluetooth:
Bluetooth:
 The device that is compatible with the
bluetooth can communocate with the other
device within 100meters of range.
 The speed of the data transfer is upto 5Mbps.
 The power consumption is higher when
compared to Wibree.
 It is not suitable for smaller devices.
Wibree:
 It can communicate with the other
device within 10meters of range.
 The power consumption is very low.
 The speed of data transfer is
upto1mbps.
 It is suitable for smaller devices.
PAL
Wibree
Wibree
technology
technology
(LL)
(Different layers of wibree & bluetooth)
Bluetooth:
RF channel:
 It is the primary channel of the
protocol.
 0.400-2.4835 GHz is the frequency
range at which it operates.
 5 Mbps is the speed.
 It can communicates with the other
device upto 100meters.
Link controller:
 It contains master .
 Master just establishes connection with the
slaves.
Link manage protocol:
 The Link Manager Protocol (LMP) is
used to control and negotiate all
aspects of the operation of the
Bluetooth connection between two
devices.
Wibree:
Physical Layer:
Up to 10m range.
 1 Mega bit/sec air data rate
 RF Antenna which will operate at the 2.4
GHz can work with the help of the
Bluetooth antenna

Link Layer
 Low power idle mode
 Scan service
 Connection set-up service
 Data exchange service
 Traffic scheduling services
Wibree Profiles
 Watch profile
 Human Interface Device (HID) profile
 Sensor profile
How power is saved in Wibree
 Wibree is aiming to produce a radio that can
transmit a small packet of data approximately
every second
 This low power drain is achieved by
designing a radio and protocol that lets the
radio stay asleep for most of its life. It can
wake up quickly, when it will broadcast its
requirement to transfer data on a number of
advertising channels across the spectrum.
•The Bluetooth Special Interest Group (SIG), the more
than 8,000-company strong trade association
responsible for advancing Bluetooth wireless
technology, joined Nokia today in announcing that
Wibree, the Nokia developed low power wireless
technology, will be contributed to the Bluetooth SIG.
The new opportunity for network operators and
service providers
 One of the most important features about Wibree is
that it will quickly become embedded into a wide
range of mobile phones. That allows the phone to act
as a gateway for information, transmitting it back over
the network to an Internet based monitoring service.
 data throughputs involved will be small, so the
transmission costs will be low and will not swamp the
networks capacity thus opening a wide range of
opportunities to a large number of fields.
Conclusion
 Taking all of these factors together, Wibree has the
potential to transform consumer devices.
 Today Wibree is a Nokia solution. However, the major
Bluetooth chip vendors including Cambridge Silicon
Radio and Broadcom are supporting it. That means it
will reside within the chips in almost every brand of
handset.
 Wibree is placed to own the wireless healthcare
market.
References
1. www.wibree.com Official website of
2.
3.
4.
5.
wibree
www.ezurio.com Understanding of
wireless range
www.ezurio.com White paper on
Wibree
www.ieee802.org
www.nordicsemi.no