General Question

Ltryptophan's avatar

Is there a wireless connection that is better than bluetooth?

Asked by Ltryptophan (9108 points ) July 1st, 2011

What is the next upgrade coming after bluetooths connection type. What is the difference between a wifi connection and a bluetooth connection. Is the wireless of today the bluetooth of tomorrow.

What is bluetooth? Will bluetooth type tech be used for payment systems?

Complete ignorance on this.

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2 Answers

crisw's avatar

Bluetooth is a lot slower and has shorter range than wifi. It’s mainy intended for devices that don’t need to communicate quickly, or over long distances.

kourkoubini's avatar

At first lets look at the version differences

Bluetooth version 1.2 :max speed 0.7 MB/sec
Bluetooth version 2.0: max speed 2.1 MB/sec
Bluetooth version 3.0: max speed 2.1 MB/sec and 24 MB/sec if using special amplifier
Bluetooth version 4.0: max speed 2.1 MB/sec and 24 MB/sec if using special amplifier

Then there are the bluetooth classes depending on the power usage

Bluetooth class 3: max range: 5 m and power usage 1 mW
Bluetooth class 2: max range: 10 m and power usage 2.5 mW
Bluetooth class 1: max range: 100 m and power usage 100 mW

So if you want to know what is the range, power consumption and data tranfer speed all you need to know is the class and the version of your bluetooth device. Now lets see what happens with Wi-Fi

Wi-Fi is much more suitable for larger home or office networks than bluetooth cause it offers more speed and range. Wi-Fi devices are categorized as follows

Wi-Fi 802.11: Release Date=Jun 1997, Operating Frequency=2.4 GHz, Bandwidth=20 MHz, Max data transfer speed=2 MB/sec, Max MIMO streams=1, Max indoor range=20 m, Max outdoor range= 100m

Wi-Fi 802.11a: Release Date=Sep 1999, Operating Frequency=5 GHz, Bandwidth=20 MHz, Max data transfer speed=54 MB/sec, Max MIMO streams=1, Max indoor range=35 m, Max outdoor range= 120m

Wi-Fi 802.11g: Release Date=Jun 2003, Operating Frequency=2.4 GHz, Bandwidth=20 MHz, Max data transfer speed=54 MB/sec, Max MIMO streams=1, Max indoor range=38 m, Max outdoor range= 140m

Wi-Fi 802.11n(1): Release Date=Oct 2009, Operating Frequency=2.4 GHz, Bandwidth=20 MHz, Max data transfer speed=72.2 MB/sec, Max MIMO streams=4, Max indoor range=70 m, Max outdoor range= 250m

Wi-Fi 802.11n(2): Release Date=Oct 2009, Operating Frequency=5 GHz, Bandwidth=40 MHz, Max data transfer speed=150 MB/sec, Max MIMO streams=4, Max indoor range=70 m, Max outdoor range= 250m

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