April 15th, 2008 — Wibree
Wibree, now known as Ultra Low Power Bluetooth saw its first working demo today. CSR, the chip manufacturer successfully demonstrated data transfer between 2 dual mode bluetooth chips. The venue was a medical conference in Luxembourg.
The chips will be commercially available from this year itself. I hope to see a lot of cell phones are wrist watches with wibree technology in the market. This would pave way to a whole new set of products are services.
Wibree is 50 times faster than Bluetooth and because of that reason itself, the power consumption drops. Also the protocol has been stripped down of unnecessary overheads and tailor made to transfer short bursts of data. A single cell battery is expected to give a wibree product a running time of 10 years.
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October 26th, 2007 — Wibree
Wibree has been renamed to ULP Bluetooth, ie Ultra Low Power Bluetooth. This change in name happened after the adoption of the technology by Bluetooth SIG. From now on this short range wireless communication protocol will be a part of the bluetooth specifications.
The advantage of this adoption is the faster integration with existing bluetooth specs and products. We are expecting to see the first wibree products in an year.
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August 10th, 2007 — Wibree
Bluetooth uses a frequency hopping technology to avoid interference from other devices operating in the same frequency. Wibree does not use frequency hopping.
Bluetooth uses fixed packet length. This increases power usage as unnecessary transmission occurs. Wibree has a variable packet length and transmits only when necessary.
Bluetooth drains your cellphone battery as it needs quite a lot of power to remain active. Wibree aims to survive for a full year on a button sized battery.
In contrast to bluetooth, wibree goes into sleep mode when not transmitting. In sleep mode the radio will be off and will save a lot of power. Wibree devices wake up only when they want to transmit.
The major usage difference between wibree and bluetooth is the traffic characteristics. Bluetooth is useful when transferring files, using the handsfree etc where the volume of data that needs to to transfered is considerable.
Wibree is used in areas where only short bursts of data needs to be transmitted. Remotes, sensor data etc.
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August 7th, 2007 — Wibree
Wibree is a PAN (Personal Area Networking) technology
Zigbee is a mesh networking technology
Wibree is more power efficient
Zigbee has got more range
Wibree’s data transfer rate is 1 Mbps
Zigbees Data transfer rate is 250 Kbps
Wibree has got a star topology
Zigbee has got a mesh topology
Wibree uses bluetooth radio and can co-exist with bluetooth
Zigbee needs its own special radio and has got no relationship with bluetooth
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August 6th, 2007 — Wibree
Wibree technology has got special features to decrease the battery usage. The benchmark is to run a wibree device on coin sized battery for an year without any recharge. The technology is such that the device will go in to sleep mode when not in use to save battery. The usage matches a remote as it is not used continuously. The handset powers up only when a button is pressed.
The receiving end (TV) is AC powered. So the receiver section can be made very powerful even to detect the most feeble signal coming from the remote. Better and bigger antenna designs can be used on the TV to improve the signal reception.
Moreover I can use my wibree mobile phone to control my TV by installing an additional software. Even a Wibree watch can be used for the same purpose, but with a lesser range.
When compared to IRDA, wibree remotes can support more complex features like a two way communication, pre-programming certain channel settings etc.
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