Selective adjustment of packet duration

The invention relates to selective adjustment of packet duration. In one aspect, the AP may estimate an amount of data that the STA has queued with respect to UL transmissions, and select a packet duration based on the estimated queued UL amount of data. The AP may transmit a trigger frame that requests UL data from the STA and indicates the selected packet duration. In response, the AP may receive a UL packet from the STA and determine an amount of UL data queued in the STA based on the UL packet. In some implementations, the AP may selectively adjust a packet duration for the UL transmission based on the UL packet, the determined amount of UL data queued in the STA, or both. 本公开涉及分组历时的选择性调整。在一个方面，AP可以估计STA已关于UL传输排队的数据量，以及基于所估计的排队UL数据量来选择分组历时。AP可以传送触发帧，该触发帧向STA请求UL数据并且指示所选分组历时。作为响应，AP可以接收来自STA的UL分组并且基于该UL分组来确定在STA中排队的UL数据量。在一些实现中，AP可以基于该UL分组、所确定的在STA中排队的UL数据量、或两者来选择性地调整用于UL传输的分组历时。