Wireless Dropping? Change your Scan Valid Interval

Is your Wireless dropping?  Update your driver of course and then try changing your Scan Valid Interval.   By default, most wireless cards are set to 60.   This is the amount of time before your wireless ‘looks’ for other access points (for roaming).   Try changing the interval to 120.

Open the device manager, double click on the wireless adapter, under advanced, click on Scan Valid Interval – change this to 120.   If you have a card that has roaming under advanced, select the lowest option.

1 Device Manager

 

2 Scan

Note:  If you have a laptop and are moving around in an area, you may need to lower this number.

Also, you may want to lower the Beacon Interval in your router if your signal is low or if you have drops.  This sends beacons more frequently and can help with your signal.   This may slightly decrease your bandwidth (wireless) and use a little extra battery on mobile devices.

While the default is 100, did you know if you increase this time (assuming you have a great signal in your home or business) that you can increase wireless bandwidth (slightly) and even increase your battery life of devices?

Got Atheros? Follow this link to drivers.

Also, do a quick survey of your entire home.  As you can see, one side of our house has interference on channel 11.   Because the ‘user’ of the other wireless is using Channel 6 + 10 (40 mhz ) spread, Channel 6 and 11 are NOT optimal.  Therefore, channel 1 is the optimal channel (you can see two devices – my AP and printer)

Left – host computer  Right – TightVNC into another computer in my home.

Avoid Wireless Interference

Remember, router position and direction matters.  As you can see below, repositioning the router got rid of “Saw Tooth” (signal that goes up and down).

Less Saw Tooth

About TCAT Shelbyville IT Department

The Tennessee College of Applied Technology - is one of 46 institutions in the Tennessee Board of Regents System, the seventh largest system of higher education in the nation. This system comprises six universities, fourteen community colleges, and twenty-six Applied Technology Colleges.
This entry was posted in Home Networking, Networking, Technology, Wireless and tagged , , . Bookmark the permalink.

2 Responses to Wireless Dropping? Change your Scan Valid Interval

  1. Henry Blake says:

    Thank You!
    This information is quite useful, as I am working to squeeze every last drop of speed out of my internet connection, despite if It’s classified as ‘high speed’. Pass it on…

  2. Henry Blake says:

    Thank You!
    This information is quite handy, for those working to squeeze every last drop of speed out of their WIFI. Pass it on…

Leave a Reply

Fill in your details below or click an icon to log in:

WordPress.com Logo

You are commenting using your WordPress.com account. Log Out / Change )

Twitter picture

You are commenting using your Twitter account. Log Out / Change )

Facebook photo

You are commenting using your Facebook account. Log Out / Change )

Google+ photo

You are commenting using your Google+ account. Log Out / Change )

Connecting to %s