FRITZ!Box 6890 LTE Service - Knowledge Base

FRITZ!Box 6890 LTE Service

Slow wireless connection according to 802.11n

The data rate of a wireless connection (WiFi) according to the wireless standard 802.11n is lower than allowed by the wireless standard.

Note:All instructions on configuration and settings given in this guide refer to the latest FRITZ!OS for the FRITZ!Box.

Simply proceed as described below. After each measure, check whether the problem is solved.

1 Checking the event log of the FRITZ!Box

  1. Click "System" in the FRITZ!Box user interface.
  2. Click "Event Log" in the "System" menu.
  3. Select "Wireless" from the drop-down list.
  4. If the message "Wireless LAN transmission quality increased by reduced channel bandwidth [...]" is displayed, follow the instructions in our guide FRITZ!Box reports "Wireless LAN transmission quality increased by reduced channel bandwidth".

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

  1. Install the latest FRITZ!OS on the FRITZ!Box.

3 Installing the latest software for the wireless device

  1. Install the latest driver for the computer's wireless network adapter (for example using Windows Update) or the latest operating system (for example Android, iOS) for the wireless device.

    Note:Information on the update can be obtained from the device's manufacturer, for example refer to the manual. You can find the latest drivers for the FRITZ!WLAN Sticks in our download area.

4 Automatically configuring wireless channel settings

Configure the following settings so that the FRITZ!Box checks the wireless environment at regular intervals and automatically selects the best wireless channel settings:

  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. Now wireless connections to the FRITZ!Box are briefly cleared and then automatically reestablished.

5 Finding the ideal location for the FRITZ!Box

  1. If possible, place the FRITZ!Box in a central location. FRITZ!Box has omnidirectional antennas. The wireless signal is therefore emitted spherically in all directions.
  2. Do not place the FRITZ!Box directly in the corner of a room.
  3. Place 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.
  4. Place the FRITZ!Box as high in the room as possible, for example on a shelf.
  5. Place the FRITZ!Box so that there are as few obstacles as possible between it and the wireless devices. Even small objects in the immediate vicinity of your FRITZ!Box can greatly reduce the coverage area of the wireless signal. Metallic objects or objects containing water, for example radiators, refrigerators, or even houseplants, significantly reduce the quality of the wireless signal.
  6. Place the FRITZ!Box away from other radio transmitters, for example microwaves, wireless speakers, or Bluetooth devices.

6 Removing USB 3.0 devices

  1. For testing purposes, remove all USB 3.0 devices from the FRITZ!Box's USB ports.
  2. If the problem no longer occurs, a USB device was affecting the wireless connection. Eliminate the interference caused by the USB device.

7 Configuring the wireless device to use 40-MHz channels

The maximum data rate can only be achieved with wireless connections according to 802.11n if the wireless device uses channels with a bandwidth of 40 MHz. If the bandwidth is only 20 MHz, a maximum of 195 Mbit/s can be achieved.

Perform the following step if the computer's wireless network adapter or the wireless device supports wireless channels with bandwidths of 40 MHz:

Note:You can find information on configuring the device in its manual, or consult its manufacturer directly.

  1. Configure the wireless network adapter or the wireless device so that it uses wireless channels with bandwidths of 40 MHz.

    Many Intel wireless network adapters can be configured for channels with bandwidths of 40 MHz by calling up the properties of the wireless network adapter in the Windows Device Manager and selecting "auto" for "802.11n Channel Width for band 2.4":

8 Disabling Bluetooth for testing purposes

Bluetooth influences the wireless speed in the 2.4 GHz frequency band, which is particularly noticeable when using real-time applications such as video streaming:

  1. Disable Bluetooth on the wireless device (for example smartphone, tablet).

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

NoteIf these measures do not sufficiently improve the quality of the wireless connection, you can use a FRITZ!Repeater to increase the range of the wireless network and the throughput of the wireless connection.