FRITZ!Box 3390 Service - Baza wiedzy

FRITZ!Box 3390 Service

Slow wireless connections according to 802.11g/b

The throughput of wireless connections (WiFi) according to the wireless standard 802.11g or 802.11b is lower than the data rate supported by the wireless standard.

Note:The configuration procedure and notes on functions given in this guide refer to the latest FRITZ!OS for your FRITZ!Box.

Simply proceed as described below. After each measure, check whether the issue persists.

1 Disabling Bluetooth for testing purposes

Bluetooth influences the wireless speed in the 2.4 GHz frequency band; this is especially noticeable when using real-time applications such as video streaming:

  • Disable Bluetooth on the network device (for example smartphone, tablet).

2 Installing the latest FRITZ!OS for the FRITZ!Box

3 Installing the latest software for the wireless device

  • Install the latest driver for your computer's wireless network adapter or the latest operating system (for example Android, iOS) for the wireless device.

    Note:You can find information on updating the wireless network adapter or wireless device in its manual, or consult the manufacturer directly.
    You can find the latest drivers for the FRITZ!WLAN Sticks in our download area.

4 Setting the FRITZ!Box's transmitter power

  1. Click "Wireless" ("WLAN") in the FRITZ!Box user interface.
  2. Click "Radio Channel" in the "Wireless" ("WLAN") menu.
  3. Check which wireless channel setting is enabled.
    • If the option "Set radio channel settings automatically (recommended)" is enabled:
      • Proceed with the following section.
    • If the option "Adjust radio channel settings" is enabled:
      1. Click "Additional settings".
      2. Select "100%" from the drop-down list "Maximum transmitter power".
      3. Click "Apply" to save your settings.

5 Finding the ideal location for wireless devices

  • If possible, position the FRITZ!Box in a room that is centrally located.
  • Do not position the FRITZ!Box directly in the corner of a room.
  • Position the FRITZ!Box so that it is as unobstructed as possible, i.e. not directly in back of or under an obstacle such as pieces of furniture or a heater.
  • Position the FRITZ!Box as high in the room as possible, for example on a shelf.
  • Position the FRITZ!Box so that there are as few obstacles as possible between it and the other wireless devices. In particular, metallic objects or objects containing water (for example a refrigerator, houseplants) significantly reduce the quality of the wireless signal.
  • Position the FRITZ!Box so that it is away from other transmitters (for example microwaves, baby monitors, wireless speakers, Bluetooth devices).
  • For testing purposes, position the FRITZ!Box and the wireless device as close as possible.

    Note:Once you have ruled out all other sources of error, you can increase the distance between the two devices again.

6 Selecting the best wireless channel

  1. Click "Wireless" ("WLAN") in the FRITZ!Box user interface.
  2. Click "Radio Channel" in the "Wireless" ("WLAN") menu.
  3. In the "Wireless Environment" section, click on the tab for the wireless frequency band being used.
  4. Use the graph "Use of the Wireless LAN Channels" to determine which channel in the lower frequency range is least affected by other wireless networks and sources of interference.
  5. Enable the option "Adjust radio channel settings" in the "Radio Channel Settings" section.
  6. From the drop-down list "Radio channel", select the channel that was affected the least in the wireless frequency band being used.
  7. Click "Apply" to save your settings.
  8. Check whether the issue with your wireless connection still occurs.
    • If the issue with the wireless connection still occurs:
      • Repeat steps 3 - 8 with a wireless channel in the middle and then with one in the higher frequency range. Once you have finished testing, use the wireless channel that was least affected by disturbances.

        Important:The diagram of the wireless environment only reflects the current situation! The allocation of the frequency bands can change significantly over the course of the day because many wireless networks are turned on when in use. Therefore, check several times to see which wireless channels are least affected by interference.

7 Using a wireless device that supports 802.11n

  • Use a wireless device that supports the wireless standard 802.11n to establish the wireless connection. This standard allows you to achieve wireless user data rates that are significantly higher.

    Note:You can find information on the wireless device in its manual, or consult the manufacturer directly.
    All current FRITZ!WLAN Sticks support 802.11n.