802.11n Channel Management


Summary: The IEEE 802.11n standard is a next generation WLAN technology that adds a number of upgrades to legacy 802.11 a/b/g clients. These upgrades enable multifold increases in transmission speeds. Some key features include multiple-input-multiple-output (MIMO) smart-antenna technology, channel bonding two 20MHz channels into a single 40MHz channel, as well as frame aggregation and block acknowledgments.


While 802.11n can potentially attain high data rates of a few hundred Mbps coupled with significant improvements in range, it is only through intelligent and adaptive transmission strategies that such throughputs have a hope of being achieved. Due to the number and complexity of the features available in IEEE 802.11n, adaptively selecting the best transmission strategy given the interference patterns and channel conditions is a complex undertaking that is of yet not well understood.


In this project, we investigate the behavior of key features in 802.11n as well as their impact on performance in varying transmission scenarios. The ultimate goal is to enable the design of a deployable channel management solution that effectively incorporates all 802.11n features.



Lara Deek


Prof. Elizabeth Belding
Prof. Kevin Almeroth



Lara Deek, Eduard Garcia-Villegas, Elizabeth M. Belding, S-J Lee and Kevin C. Almeroth.
The Impact of Channel Bonding on 802.11n Network Management.
ACM CoNext, Tokyo, Japan, December 2011.



This work is done in collaboration with Sung-Ju Lee from HP Research Labs and Eduard-Garcia Villegas from UPC Barcelona Tech.