Specifications

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2.7.5 Simultaneous Use with WLAN
Since Bluetooth employs the same frequency range (2.4GHz ISM band), Bluetooth cannot be
operated concurrently with WLAN. However, it is possible to make mutual interference less by
following the instruction without turning off the power of either device.
• If the partner Bluetooth device supports AFH (Adaptive Frequency Hopping)
AFH function automatically avoids the channels such as WLAN equipments are in use. But
in some case, Bluetooth communication affects other communications such as WLAN.
• If the partner Bluetooth does not support AFH (exclusive use of Bluetooth and WLAN)
- Confirm that WLAN communication has been finished before performing Bluetooth
connection. If Bluetooth connection is performed while WLAN is used, radio wave from
Bluetooth will significantly affect WLAN communication. Communication error by
interference by Bluetooth radio wave can be reduced if Bluetooth communication is started
after receiving data via WLAN.
- Confirm that Bluetooth communication has been finished and Bluetooth connection is
terminated before WLAN communication starts.
- If another terminal fails to perform communication via WLAN/Bluetooth, keep the terminal
away from this terminal as far as possible and start to operate Bluetooth again.
- For WLAN communication to carry out, operate the terminal as close to Access-Point (for
WLAN) as possible. As it is assumed that Bluetooth devices are operated near by the user,
affect by interference mainly occurs on WLAN device. If the terminal distances from the
Access-Point, affect by interference generated by Bluetooth device will increase causing
LAN communication to fail. If this happens, place the terminal as near to the Access-Point
as possible and operate WLAN communication again.
Note:
Even if either one of the methods described above has been determined to be effect, thorough
check and assessment on the site and for system designs must be carried out prior to
simultaneously operating Bluetooth and WLAN communications.