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Configure 802.11n Channel Bonding on Intel® Wireless Adapters


Last Reviewed: 18-Jan-2017
Article ID: 000005799

Channel bonding creates more room for data by bonding or combining two 20 MHz channels into a 40 MHz channel. Channel bonding increases the data rate because data rate is directly proportional to channel bandwidth. 802.11a/b/g networks use a single 20 MHz channel. 802.11n networks can use a 40 MHz channel.

IEEE 802.11n channel bonding is configured under the Windows Network Adapter* Properties > Advanced tab. Choose 802.11n Channel Width. A Windows 7* example can be seen below. Windows XP* has a similar interface.

 

Channel Bonding properties

 

A separate configuration parameter exists for each frequency band that the wireless device supports. Not all Intel® wireless devices support 5.2 GHz. Two configuration values are available for Channel Width: 20 MHz Only and Auto.

Choosing a 20 MHz channel width effectively disables channel bonding. Choosing Auto will allow the Access Point (AP) to determine the channel width. If the AP supports channel bonding, then the channel width will be 40 MHz. If the AP does not, the channel width will be 20 MHz.

Notes
  • Although configurable on most wireless devices, Intel doesn't recommend using 40 MHz channel width in the 2.4 GHz frequency band because of the limited number of non-overlapping channels.
  • The 2.4 GHz channel width can't be configured on the Intel® Wireless WiFi Link 4965AGN adapter because it doesn't support channel bonding in that frequency band.
 
Related topics
What is Multiple-Input/Multiple-Output (MIMO)?