Are there any newly deployed media contention algorithms with 802.11n – Especially with multiple antennas and a higher data rate?
The media contention algorithms in 802.11n remain substantially similar to those in 802.11a/b/g – i.e., CSMA/CA, as defined by Clause 9 of IEEE Std 802.11-2007. There are some tweaks to accommodate the new 802.11n features and packet formats. There are also some efficiency improvements, such as aggregated MPDUs and MSDUs, in order to better utilize the bandwidth available. However, there are no new media contention algorithms.
