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« Intel Opts to Cut Cell from Centrino's Future | Main | Vodafone's Roaming Plan Offers Flat Rate Across Europe »
Tim Higgins notes that it might not be smart to connect for cell data to your smartphone via Bluetooth: Bluetooth 1.2, the version most likely found in any given smartphone, tops out at a little above 700 Kbps, well below the top download burst rates available with EVDO and HSDPA. Higgins found in testing that connecting a smartphone via USB provided substantially improved throughput—in one case a best rate three times higher than with Bluetooth.
Bluetooth 2.0+EDR closes in on 3 Mbps, but as a newer flavor, it’s less available due to chip expense. It’ll eventually become the standard, even as EVDO Rev. A moves to over 3 Mbps of burst download speed and HSDPA hits similar marks. (Power usage, may be less of a constraint, because 2.0+EDR “talks” less to achieve the same throughput, thus being more efficient per bit.) [via JiWire]
Posted by Glennf at March 3, 2007 4:56 PM
Categories: Adapters, Bluetooth, EVDO, USB
Even devices that are already BT 2.0+EDR capable today won't be able to support peak EVDO or HSDPA speeds through the Bluetooth link. I recently tested BT 2.0 speeds with my Nokia N93 and my notebook and got top speeds of 150 kBytes/s. Not bad but not enough for a 3-4 MBit/s broadband connection. The solution could be simple: The N93 has Wifi on board. So instead of using it 'only' as a client, it could potentially also be used in access point mode to hook up one or more clients via Wifi and the N93 'access point' to the Internet via EVDO or HSDPA. Not that this is supported on this handset today, but from a technical point of view it should work. Here's the long story:
http://mobilesociety.typepad.com/mobile_life/2007/01/bluetooth_20_an.html
Cheers,
Martin
Posted by: Martin at March 4, 2007 3:11 AM