WIBREE

Today’s world wireless technology is evolving day by day with growing demand for mobility. So this paper emphasize on WIRELESS technology that is WIBREE. Now a day’s consumers don’t like wires and they love compact, portable electronic device that they can carry with them everywhere without fear of running short on battery power. For example mobile phone, But to extend its functionality and allow it to interface wirelessly to huge extent of peripherals the technical challenge is to ensure minimal power consumption under heavy and daily usage this is WIBREE and it is what consumers have been crying out for. WIBREE technology is nothing but complement of BLUETOOTH technology.WIBREE technology is not only responsible for consuming low power but also it enhances the battery power of devices. This technology will be find applications in sports sensors, electronic toys, human interface devices such as wireless keyboards, wireless mouse etc..,
Nokia's cost-effective, short range, wireless technology now under


development allows the connection of small, low power devices such as watches and sport sensors to larger devices such as mobile phones and personal computers. This new technology joins an expanding range of wireless protocols poised to change the way we live, work, and play in coming years. While the Wibree protocol is currently under development and should be ready by mid 2007, the availability of the Wibree chip depends upon the semiconductor manufacturers' schedules. Wibree is similar in many respects to the now prevalent Bluetooth standard. Both use the 2.45 GHz band to transfer data and have a 1 Mbps transfer rate (although the newer Bluetooth 2.0 standard already incorporates a 3.0 Mbps transfer rate) and a rage of about 10 meters (m). The two complementary technologies differ in size, price, and most of all power consumption. Wibree would use only a fraction of the power consumed by today's Bluetooth chips, resulting in a much longer battery life and more compact devices. While Bluetooth can be used to transmit audio and media files, Wibree is designed to extend this network by serving applications that transmit only small amounts of data and where size and cost are priorities. Many applications that were not cost-effective using existing Bluetooth technology, such as wirelessly controlled toys, watches, medical and sports sensors, and a range of other applications that have not been conceived yet, might be developed using Wibree technology.


Why is it called Wibree?

There’s already debate about the derivation of the name. The Wi is short for Wireless and Nokia initially explained that “bree” is Old English for a crossroad or meeting place. The debate focuses in whether that’s a real meaning for “bree” or a word that Tolkien made up. Other real meanings of “bree” include agitation and eyebrow. All of which seem strangely appropriate

WHAT IS WIBREE?

Wibree is a digital radio technology (intended to become an open radio standard) designed for ultra low power consumption (button cell battery) with in short range (10 meters/30 feet) based around low cost transreceiver microchips in each device . WIBREE is designed to work side by side with and complement Bluetooth. It operates in 2.4GHZ ISM band with physical layer bit rate of 1Mbps.Main application include devices such as watches, wireless keyboards ,toys and sports sensors where low power consumption is a key design requirement and it is also a first open wireless technology offering connectivity between mobile device or personal computer’s for small button cell ,battery power devices such as watches ,wireless keyboards ,toys and sports sensors.

EVOLUTION OF WIBREE TECHNOLOGY
Wibree technology was introduced by NOKIA as open industry standard initiatives extending local connectivity to small devices in 3rd Oct 2006. In order to enhance battery Power of device, to minimize power consumption, to reduce chip size.

RELATIONSHIP BETWEEN BLUETOOT H AND WIBREE

Wibree technology is a compliment of Bluetooth technology .Both Wibree and Bluetooth allow devices to communicate via short range radio signals .Bluetooth can be used to perform various tasks , including sharing a file between PC and a PDA , downloading an address book into a cell phone and transmitting signal from remote control to a television Bluetooth operates on 2.4GHZ and having extent of 10 mts. Where as it data value is 3Mbps .So Wibree follows specification as Bluetooth have not only specification it performs similar function what Bluetooth have .The only discrepancy between Bluetooth and Wibree is that WIBREE consumes only fraction of power when compare to other radio technologies .To be specific wibree is low power version of Bluetooth which is to used conventional mobile phones as well as emerging markets . Another discrepancy between wibree and Bluetooth is Wibree transmits data more slowly than Bluetooth up to 1Mbps compare to Bluetooth is 3 Mbps.
This technology is complement of Bluetooth because it performs same functions as Bluetooth does while using far less power.

CONCISE EXPLANATION OF WIBREE TECHNOLOGY
Wibree is a complementary technology of any other radio technology .its main features are low power consumption ,small size ,low cost and long life Battery power. The main objective of wibree is that device should run from a battery for years typically over years
NORDIC SEMICONDUCTOR already supplies proprietory wibree chips into the market sectors.
Wibree chips come in two types that is 1) Stand alone mode and 2) Dual mode
In stand alone mode chips will be for use slave products such as sensors ,watches ,where as in Dual chips will coexist with Bluetooth and will be used in host devices such as cell phone that is nothing but dual mode chipset will reuse the Bluetooth RF section with no changes there be some additional functions in the Bluetooth baseband section and a separate protocol stack .So this chip will be operate at 2.4GHZ frequency with data rate 1 Mbps and extent of distance upto 5-10mts .
In Dual mode implementation the Wibree functionality is an add on feature inside Bluetooth circuitry sharing a great deal of existing functionality resulting in a minimal cost increase compare to existing products. The Dual modes are targeted at mobile phones, multimedia computers and personal computers where as stand-alone implementation are power and cost optimized design target at for sports, wellness and Human interface devices (Wireless key boards and mouse).




WIBREE DEVICE ARCHITECTURE
Wibree specification on has been created by having two equally important implementation alternatives in mind namely, Dual mode and Stand alone mode. There will be two types of Wibree implementations – one based on the Wibree stand-alone chip, and another based on the Wibree-Bluetooth dual-mode chip - which will serve different purposes and be installed on different devices. Stand-alone Wibree chips would be implemented in small, low cost devices such as wireless mouse and keyboards, sensors, and toys. The Wibree-Bluetooth dual-mode chips would probably be implemented in future mobile phones, allowing users to benefit from both worlds – Bluetooth 2.0 high speed and Wibree's low power and extended ability to communicate with a new generation of smaller wireless devices. Wibree is implemented either as stand-alone chip or as Bluetooth-Wibree dual-mode chip. Small devices like watches and sports sensors will be based on the stand-alone chip whereas Bluetooth devices will benefit from the dual-mode solution, extending Bluetooth device connectivity to new range of smaller devices. Even in dual mode, a Wibree device has the potential to use just 75-80% of the power consumption associated with Bluetooth alone. However, because dual mode devices will use parts of the Bluetooth hardware, power consumption is ultimately dependant upon Bluetooth implementation. Therefore, dual mode devices will not enjoy all of the benefits and possibilities as outlined by the Wibree specifications.

SPECIFICATIONS OF WIBREE

There are three types of specification for wibree that is
1) Wibree radio specification enables dual-mode implementations to reuse Bluetooth RF part but also to guarantee ultra low power consumption for devices with embedded stand-alone implementation of the Wibree specification. Wibree operates in 2.4 GHz ISM band with physical layer bit rate of 1 Mbps and provides link distance of 5-10 meters.
2) Wibree link layer specification
Wibree link layer provides ultra low power idle mode operation, simple device discovery and reliable point-to-multipoint data transfer with advanced power-save and encryption functionalities. The link layer provides means to schedule Wibree traffic in between Bluetooth transmissions.

3) Wibree host & profile specifications

In the first phase Wibree provides sensor, HID and watch user interface profiles.

ADVANTAGES OF WIBREE

1. Ultra low peak and average power consumption in both active and idle modes
2 .Ultra low cost and small size of accessories and HID
3. Minimal cost and size addition to Mobile phones and personal computer’s
4. Global, intuitive and secure multi-vendor interoperability
5. By using this technology Battery life of the device will be enhanced .
6. Chip size of Wibree will be smaller when compare to other radio technologies.
7. Wibree technology finding applications in health care , human interface devices such as wireless keyboards, wireless mouse etc.., and medical purpose .
APPLICATIONS OF WIBREE TECHNOLOGY
The application that is crying out for Wibree is medical sensors for remote health and wellbeing monitoring. These include simple sensors such as weight scales, and more sophisticated ones such as blood pressure monitors and glucosimeters .your phone display, such as bus information from a transmitter at a bus stop. Many of us enjoy an active lifestyle. Wibree enabled products can provide a multitude of appealing applications, ranging from the measurement and consequent optimization of a professional athlete’s performance during a work out session to the automatic selection of suitable music from your mp3 player to match your heart rate while bicycling to work.

1. CELL PHONE USING WIBREE TECHNOLOGY


In mobile phone design, the main benefit of using the dual-mode chip supporting simultaneously Bluetooth and Wibree protocols is achieved by sharing one physical radio and antenna. From the user and application point of view, the key benefit is that a mobile phone or a personal computer becomes a gateway to wide area networks (WAN) and internet for the small low power devices.

2. HEALTH CARE
A healthy living is important to all of us. Whether monitoring your heart rate and blood pressure at home to improve your personal diet or being connected over-the-air to your physician while rehabilitating out of hospital, Wibree makes being healthy easier and more fun.
3. ELECTRONIC TOYS


Kids love toys, and so do many of their parents. Steer your little racing car clear of obstacles with your mobile phone; watch your little robot interact with that of your friend when they come close and tune up the volume to your favorite beat with your tiny mp3 player remote control. Wibree enabled toys and gadgets take play to the next level.
4. OFFICE WORK

A growing number of us use a personal computer in our daily work or at home, and expect the best performance and ergonomics from the devices we use to interact with the computer. Moreover, work often travels with us and so it is important that we can set up a convenient working environment while on the move. Wibree ensures that your wireless keyboard, mouse and digital pen will work when you work.




5. JOGGING

Imagine yourself outdoors jogging and listening to music played back by the mp3 player on your mobile phone. The heart rate meter around your chest and the accelerometer attached to your shoe feed continuous data to the mobile phone so you can later analyze and compare your performance. Suddenly the music fades to the background and your virtual coach informs you of an incoming call from your girlfriend. While you press the answer button on your wrist watch you note that your pulse is higher than it should be and decide to slow down.

Comparison of Wibree technology with other radio technologies

Wibree as a technology complementary to Bluetooth, its closest competition might be ZigBee. Both technologies offer extended battery life in exchange for a relatively low data transfer rate (1 Mb/s for Wibree and 0.25 Mb/s for ZigBee). ZigBee has a longer range (30 m or more as opposed to Wibree's 10 m range). ZigBee can help standardize different smart home technologies such as lighting and heating controls, blind, drapery, and shade controls, and even home appliances such as TVs, DVDs, microwaves, and ovens. Range is less important to Wibree, which is more oriented towards small, low power consumer products such as mobile phones, watches, and input devices, such as mouse and keyboards, as well as toys. The only potential market where the two technologies might compete directly is the medical and sport sensor market; alternatively, both Wibree and ZigBee networks could work side-by-side in different applications over the next few years.

Conclusion

Wibree is a complementary technology for applications where low power consumption, small size and low cost are the critical requirements. As a rule of thumb, as data rate increases the power consumption gains of Wibree diminish. For this reason, there are some use cases that Bluetooth is better equipped to serve, and some which will benefit most from Wibree. Therefore, there is room for both technologies in the marketplace, and in some cases, they will exist simultaneously in the form of the Bluetooth-Wibree dual-mode chip, which extends the range of devices to which both technologies may connect.