Method and system for dynamic AMPDU duration control in a wireless communication system

摘要

A method of providing aggregated MAC protocol data unit (AMPDU) duration control in a wireless communication device includes setting an AMPDU duration. Pass/fail statistics are collected for each MPDU of an AMPDU in a time window, W. A packet error rate (PER) difference is calculated between first and last sets of MPDUs for each AMPDU in the window. An average PER difference is calculated across all AMPDUs in the window. When the average PER difference is greater than a first threshold, then the AMPDU duration is decreased. When the difference is less than a second threshold, then the AMPDU duration is increased. When the difference is within the first and the second thresholds, then the method returns to the step of collecting for a next time window. The AMPDU duration can also be adjusted based on detected Doppler and line-of-sight transmissions.

主权项

1. A method of providing aggregated MAC protocol data unit (AMPDU) duration control in a wireless communication device, the method comprising:
initializing an AMPDU duration; setting a time window, W, to a multiple of the AMPDU duration; collecting pass/fail statistics for a first set of MAC protocol data units (MPDUs) and a second set of MPDUs from a data transmission during the time window; using the collected pass/fail statistics, calculating a packet error rate (PER) difference, ΔP, between the first set of MPDUs and the second set of MPDUs for each AMPDU in the time window; calculating an average PER difference, ΔPAVG, across all AMPDUs in the time window; performing one action from a group comprising:
if ΔPAVG is greater than an upper threshold, decreasing the AMPDU duration by a first value,if ΔPAVG is less than a lower threshold, increasing the AMPDU duration by a second value, andif ΔPAVG is within the upper threshold and the lower threshold, continuing from a next window; and continuing from setting the time window.