August 4th, 2007 — Wibree
Nokia came up with the wibree idea and quite tactfully they merged with the bluetooth SIG. Their site even suggests some product ideas, like watch, health monitor and some really fancy cool gadgets.
The initial impression was that wibree will eliminate bluetooth from the market. But with the merger of wibree with the bluetooth SIG, a smart business idea, or rather a conspiracy emerges. Wibree is not going to be a bluetooth killer, instead it will kill every other sensor network technology like zigbee and sunspot.
The advantages of wibree is that it has got more power efficiency and 4 times data transfer capacity. But Zigbee has got more range, and built in mesh networking capabilities.
But Wibree shoots down all its competition by being compatible to bluetooth which is an accepted technology. Both uses the same radio and a bluetooth device can be upgraded by a small firmware change.
Nokia is clever enough to see the opportunity, billions of phones and other devices exist worldwide with bluetooth technology. Everyone of us carries a bluetooth phone. The world is bluetooth enabled. Nokia made a technology that is sensor network ready, upon the existing bluetooth system.
This beautiful business idea is gonna kill every other sensor network technology for sure.
To be thinking positive, wibree and bluetooth will transform the way devices exchange information. Personal areas networking will get a real boost from the wibree technology.
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July 29th, 2007 — Wibree
A cool new wibree product will be released with the launch of wibree devices. It will be a wibree enabled wrist watch, bluetooth and wibree enabled mobile phone and bluetooth hands free.
With this product you will be come totally hands free. When a call comes the mobile will ring, but you dont have to take the mobile from your pocket to know who is calling. The callers name and number will be scrolling on your wrist watch. Your mobile phone will send the data to your wibree enabled wrist watch.
Also your bluetooth handsfree will be standing by for your command to pick the call. If you press a button on your watch or your hands free the call will be answered and you can talk freely.
The same technology is expected to replace in-car hands free systems also.
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July 21st, 2007 — Wibree
This is the wibree stack.
Image taken from wibree website.
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July 21st, 2007 — Wibree
Wibree is known as Ultra low power bluetooth technology, with its adoption by the bluetooth SIG. Its hardware implementation has a stand alone wibree chip and a dual mode chip which has wibree and bluetooth technologies in it.
The single mode devices will be the low power devices like the remote control handset and the sensor that will be used to transmit a patients vital signals wirelessley. The dual more chipset will be used in devices like mobile phone and the receiver section of the TV remote control.
In dual mode the bluetooth RF part will be shared between bluetooth and wibree. Wibree’s capabilities are built into its link layer. Link layer has a low power advertisement service, simple device discovery and point to multipoint data transfer.
The Link layer can schedule wibree packets in between bluetooth packets.
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July 20th, 2007 — Wibree
Wibree achieves the low power usage by sleeping whenever its not transmitting. The main usage scenarios of wibree are such that only very little data is transmitted and that too once in a while.
Think of a remote wibree remote control for your TV. The remote usage is very low compared to the idle time. Similarly a wibree sensor network will only be transferring data in small volumes and limited cycles.
The device will be sleeping whenever its not not being used. When a wibree device is required to transmit it will wake up and it will transmit on a number of advertising channels. The receiving device will then allocate a channel for the data transmission. Once the data is transferred and acknowledged the wibree device goes back to sleep again.
Wibree saves power by using low power radio, minimising the data transfer and sleeping when not transmitting. The challenge is to achieve 1 year battery life for a normal cell sized battery.
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