The range at which a Bluetooth device can transmit depends on several factors.
Understanding the ranges helps you be aware of whether a Bluetooth-enabled device could be the victim of a
blue jacking or bluesnarfing attack. Go to www.bluetooth.com/learn-about-bluetooth/bluetooth-technology/range/
to explore the Bluetooth Range Estimator tool. First, watch the video and then read the details of each of the key factors.
Then use the range estimator tool, changing the different parameters (receiver sensitivity, path loss, transmit power,
transmitter antenna gain, and receiver antenna gain) to determine the estimated range.
What does this tell you about Bluetooth ranges? How could this tool be used? Write a one-page paper on what you have learned.
Bluetooth device can transmit depends on several factors
Full Answer Section
- Transmitter antenna gain: This is the directional gain of the antenna that is used to transmit the signal. The higher the transmitter antenna gain, the longer the range of the device.
- Receiver antenna gain: This is the directional gain of the antenna that is used to receive the signal. The higher the receiver antenna gain, the longer the range of the device.
- The tool is most accurate when you use the default values for the receiver sensitivity and path loss.
- The tool is less accurate when you use high values for the transmit power, transmitter antenna gain, and receiver antenna gain.
- The tool is not accurate for outdoor environments.
Sample Answer
- Receiver sensitivity: This is the minimum signal strength that a Bluetooth device can detect. The lower the receiver sensitivity, the longer the range of the device.
- Path loss: This is the attenuation of the signal as it travels through the air. Path loss is affected by factors such as the distance between the devices, the presence of obstacles, and the weather conditions.
- Transmit power: This is the power of the signal that is transmitted by the Bluetooth device. The higher the transmit power, the longer the range of the device.