QoS Management for Multi-User EDCA Transport Modes in 802.11AX Networks

摘要

The present invention relates to a wireless network comprising an access point and non-AP stations. The station has traffic queues and associated backoff counters that are decremented over time upon continuously sensing the medium as free for more than respective AIFS durations. To compensate for the additional opportunities provided by OFDMA RUs, the queue switches to MU mode when transmitting its data in the RU provided by the AP. In order to restore the dynamics of the backoff counters that are frozen in MU mode in known techniques, embodiments provide that at each expiration of one of the queue backoff counters: the current mode of the expired traffic queue is determined; For legacy mode, the station accesses the channel to send data from the queue; In the case of MU mode, on the other hand, a new backoff value is fetched to reset the expiry backoff counter, without causing data from the queue to be transmitted.