Future of Bluetooth

[VelMurugan]

Future of Bluetooth

Broadcast Channel:
enables Bluetooth information points. This will drive the adoption of Bluetooth into cell phones, and enable advertising models based around users pulling information from the information points, and not based around the intrusive object push model that is used in a limited way today.

Topology Management:
enables the automatic configuration of the piconet topologies especially in scatternet situations that are becoming more common today. This should all be invisible to the users of the technology, while also making the technology just work.

Alternate MAC PHY:
enables the use of alternative MAC and PHY's for transporting Bluetooth profile data. The Bluetooth Radio will still be used for device discovery, initial connection and profile configuration, however when lots of data needs to be sent, the high speed alternate MAC PHY's will be used to transport the data. This means that the proven low power connection models of Bluetooth are used when the system is idle, and the low power per bit radios are used when lots of data needs to be sent.

QoS improvements:
enable audio and video data to be transmitted at a higher quality, especially when best effort traffic is being transmitted in the same piconet.

Bluetooth technology already plays a part in the rising Voice over IP (VOIP) scene, with Bluetooth headsets being used as wireless extensions to the PC audio system. As VOIP becomes more popular, and more suitable for general home or office users than wired phone lines, Bluetooth may be used in cordless handsets, with a base station connected to the Internet link.

The next version of Bluetooth after v2.1 code-named Seattle, that will be called Bluetooth 3.0, has many of the same features, but is most notable for plans to adopt ultra-wideband (UWB) radio technology. This will allow Bluetooth use over UWB radio, enabling very fast data transfers of up to 480 Mbit/sec, synchronizations, and file pushes, while building on the very low-power idle modes of Bluetooth. The combination of a radio using little power when no data is transmitted and a high data rate radio to transmit bulk data could be the start of software radios. Bluetooth, given its world-wide regulatory approval, low-power operation, and robust data transmission capabilities, provides an excellent signaling channel to enable the soft radio concept.

On 28 March 2006, the Bluetooth Special Interest Group announced its selection of the WiMedia Alliance Multi-Band Orthogonal Frequency Division Multiplexing (MB-OFDM) version of UWB for integration with current Bluetooth wireless technology.

UWB integration will create a version of Bluetooth wireless technology with a high-speed/high-data-rate option. This new version of Bluetooth technology will meet the high-speed demands of synchronizing and transferring large amounts of data, as well as enabling high-quality video and audio applications for portable devices, multi-media projectors and television sets, and wireless VOIP.

At the same time, Bluetooth technology will continue catering to the needs of very low power applications such as mice, keyboards, and mono headsets, enabling devices to select the most appropriate physical radio for the application requirements, thereby offering the best of both worlds.

The Bluetooth SIG has also announced that they are looking to include Ultra Low Power use cases into Bluetooth, enabling a whole new set of use cases. This includes watches displaying Caller ID information, sports sensors monitoring your heart rate during exercise, as well as medical devices. The Medical Devices Working Group is also creating a medical devices profile and associated protocols to enable this market.

The Draft High Speed Bluetooth Specification is available at the Bluetooth website.

Source : TechXcel

[kavee]

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[aswinnandha]

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