Here you are aiming to eliminate the effect of other wireless networks near you that may be limiting the range of your wireless connection. If you want to know more about wireless channels please visit this link.
Connect an Ethernet cable between your router and computer.
open the wireless settings page of your router in a web browser (some default IP addresses are 192.168.1.1 or 192.168.0.1 or 10.0.0.1). You can run a quick ipconfig command at the command prompt to check:
Most routers require a username and password. The Username and Password are usually any combination of blank and “admin”. If you can’t figure it out, Google the model number of your router and “password” together.
Find the Wireless Settings Page
Use inSSIDer to determine which channel your network should be on. Remember: 1, 6, and 11 are the only three channels that don’t overlap, and putting your network on the same channel as another network is always a better idea than overlapping. Select the Channel you have decided to use (On some routers you will need to set the channel selection on your router to ‘Manual’ instead of ‘Automatic’ before changing the channel), and click the “Save Settings” or “Apply Settings” button, which is usually at the top or the bottom of the configuration page.
Connect to the wireless network.
Note: If you are unable to connect, Repeat steps 1 to 4 using a different channel.