FRITZ!WLAN Stick AC 430 MU-MIMO Service - Knowledge Base

FRITZ!WLAN Stick AC 430 MU-MIMO Service
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Slow wireless connections according to 802.11ac

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

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

1 Establishing a wireless connection to the 5 GHz frequency band

The maximum data rate can only be achieved when the wireless connection is established to the 5 GHz frequency band and the wireless router (for example the FRITZ!Box) uses the wireless standard 802.11ac:

Note:We used a FRITZ!Box as an example for configuration. Some FRITZ!Box settings are only displayed if the advanced view is enabled. Refer to the respective manufacturer for information on how to set up other routers, for example consult the manual.

Configuring the 5 GHz frequency band

  1. Click "Wireless" ("WLAN") in the FRITZ!Box user interface.
  2. Click "Radio Network" in the "Wireless" ("WLAN") menu.
  3. Enable the option "Wireless radio network enabled" in the "5-GHz Frequency Band" section.
  4. Enter a different name in the field "Name of the wireless radio network (SSID)" so that you can distinguish the 5 GHz wireless network from the 2.4 GHz wireless network in the future.

    Important:Not all wireless devices support all special characters. Therefore, only use standard Latin letters (not letters such as ä, ë, ö, ü, á, é, í) and numbers in the wireless network name.

  5. Click "Apply" to save the settings.

Configuring the wireless standard "802.11n+ac"

In the factory setting, the wireless standard 802.11ac is configured for the 5 GHz frequency band in the FRITZ!Box. If you changed the FRITZ!Box's wireless settings, configure the following settings:

  1. Click "Wireless" ("WLAN") in the FRITZ!Box user interface.
  2. Click "Radio Channel" in the "Wireless" ("WLAN") menu.
  3. Enable the option "Adjust radio channel settings".
  4. Click "Additional settings" (if available).
  5. Select the wireless standard "802.11n+ac" from the drop-down list for the 5 GHz frequency band.
  6. Click "Apply" to save the settings.

Now the FRITZ!Box is configured for the wireless standard 802.11ac and you can establish a wireless connection to the wireless network with the name (SSID) that you assigned to the 5 GHz frequency band.

2 Deleting the wireless connection to the 2.4 GHz frequency band

Make sure that the FRITZ!WLAN Stick cannot establish a wireless connection to the 2.4 GHz frequency band:

Windows 10

  1. Click "Start" and then "Settings" in the Windows task bar.
  2. Click "Network & Internet" in the "Settings" menu.
  3. Click "Wi-Fi" and then "Manage Wi-Fi settings".
  4. In the "Manage known networks" section, click on the connection that displays the wireless network name (SSID) of the wireless router in the 2.4 GHz frequency band and then click "Forget".

Windows 8

  1. Press the keyboard shortcut Windows key + C.
    • The Windows sidebar now opens.
  2. Click "Settings" and then the wireless icon in the Windows sidebar.
  3. Right-click the connection that displays the wireless network name (SSID) of the wireless router in the 2.4 GHz frequency band.
  4. Click "Forget this network".

Windows 7

  1. In Windows, click "Start" and then "Control Panel".
  2. Select "Category" from the drop-down list "View by:" on the top right ().
  3. Click "Network and Internet" and then "Network and Sharing Center".
  4. On the left, click "Manage wireless networks".
  5. Right-click the connection that displays the wireless network name (SSID) of the wireless router in the 2.4 GHz frequency band.
  6. Click "Remove network" and confirm with "OK".

3 Enabling or refreshing the auto channel

If the auto channel is enabled, the FRITZ!Box checks the wireless environment and automatically selects the optimum wireless channel settings. However, the allocation of the frequency bands can change significantly over the course of the day. The FRITZ!Box does not refresh the auto channel as long as wireless devices are still connected with it. You can therefore manually refresh the auto channel at any time:

Note:All wireless connections to the FRITZ!Box are cleared and then automatically re-established when you enable or refresh the auto channel.

  1. Click "Wireless" ("WLAN") in the FRITZ!Box user interface.
  2. Click "Radio Channel" in the "Wireless" ("WLAN") menu.
  3. Enable the option "Set radio channel settings automatically (recommended)".
  4. Click "Apply" to save the settings.
  5. Click the "Refresh Auto Channel" button.

4 Installing the latest driver for the FRITZ!WLAN Stick

5 Installing the latest firmware for the wireless router

  • Install the latest firmware for your wireless router according to the manufacturer's instructions.

    Note:If you are using a FRITZ!Box, install the latest FRITZ!OS as described in this guide.

6 Finding the ideal location for wireless devices

  1. If possible, position the wireless router in a room that is centrally located.
  2. Do not position the wireless router directly in the corner of a room.
  3. Position the wireless router 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.
  4. Position the wireless router as high in the room as possible, for example on a shelf.
  5. Position the wireless router 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.
  6. Position the wireless router so that it is away from other transmitters (for example microwaves, baby monitors, wireless speakers, Bluetooth devices).
  7. For testing purposes, position the wireless router and the computer with the FRITZ!WLAN Stick 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.

Now the wireless router and the FRITZ!WLAN Stick are ideally configured. You will now achieve the greatest possible wireless range as well as the highest throughput between your FRITZ!WLAN Stick and the wireless router.

Note:If the previous measures did not succeed in sufficiently increasing the quality of your wireless connection, you can use a FRITZ!WLAN Repeater that supports the wireless standard 802.11ac to extend the range of the wireless network and increase the throughput of your wireless connection.