Android Bluetooth VS Bluetooth Low Energy

Question

I am trying to create an application that needs to exchange small size of data - just to notify that the devices are close enough - for as long as the smart phone is running. I

Answer 1

Recently two different Bluetooth technology available :

- Classic Bluetooth - Range : 30 foot or 10 meter

- Bluetooth Low Energy or Bluetooth Smart - 200 ft and beyond

• Consumes only a fraction of the power of Classic Bluetooth radios.

• Powered by small, coin-cell batteries.

• Can operate these devices for more than a year without recharging.

• Enhanced range : optimize range to 200 feet and beyond.

• Ultra-low peak, average and idle mode power consumption.

• Lower implementation costs.

• Multi-vendor interoperability.

• Data Transfers : 8 octet minimum up to 27 octets of packet maximum.

• Speed : 1 Mbps.

• Advanced sniff-sub rating to achieve ultra low duty cycles.

• Range : 100 meters ( Increased modulation index ). Range may vary depending on class of radio used in an implementation:

Class 3 radios – have a range of up to 1 meter or 3 feet

Class 2 radios – most commonly found in mobile devices – have a range of 10 meters or 33 feet

Class 1 radios – used primarily in industrial use cases – have a range of 100 meters or 300 feet

• Robustness : 24 bit CRC ( maximum robustness against interference ) Strong Security : Full AES-128 encryption using CCM - Counter Mode Cipher (encryption and authentication)

This information is from : http://www.bluetooth.com/Pages/Bluetooth-Smart.aspx

For more information regarding classic Bluetooth or BLE you can check above link.