Station sends the BA and upgrades to the next possible BA window
size upon receiving all frames successfully from the current
window. Some IOT APs go out of sync from BA window size of the
station when AP fails to receive the BA sent from station. AP
transmits the frames again with previous window sequence number
and won't be ack'ed by station hardware as BA window has already
moved ahead. So, station deletes the upgraded BA and tries
to fallback.
Ideally, AP is supposed to consider the fact that "the previous
window transmission was successful when station upgrades to next
window size". But some APs take little longer time to
recover/upgrade to next window size. Don't delete the BA
immediately and have some tolerance(3 seconds) as the previous
negotiated BA just got deleted.
Change-Id: I6b277223f02dac521316cec20bd5d958785cc2e9
CRs-Fixed: 2970714
c65ead975b