hwRadio80211nAMPDUMaxLengthExponent 1.3.6.1.4.1.2011.6.139.3.1.1.20

The limit length of an AMPDU frame. AMPDU is the abbreviation of aggregate MAC protocol data unit. In order to reduce the spending of transmission, 80211n brings forward the frames aggregate technology that it aggregates several network frames to a singlehanded 80211 frame and transmit it. There are two ways of frames aggregate, one is the AMSDU and the other is AMPDU. AMPDU means it converts every network frame to 80211 frame, then aggregates serveral 80211 frames which go to the same destination to a singlehanded frame and transmit it. The units of the AMPDU frame is Byte, the range of the AMPDU frame is from 1024 Bytes to 65535 Bytes, and the default AMPDU frame is 1024 Bytes. If it's is not a kind of 11n or mixed with 11n AP, you can't config the it's AMPDU param value. When the AP changed to be other kinds, the value of AMPDU param will change to be default value. If the AMPDU param value is set to be 65535, that means the AMPDU module is closed, and if it set to be [0,3], that will enable the AMPDU module and set the AMPDU param value.