如果只有一台设备连接到 WiFi 路由器,启用 WMM(WiFi 多媒体)会使延迟增加 80-90%。但是,总体吞吐量会显著增加。
为什么启用 WMM 会增加延迟,尤其是只有一个设备连接到路由器的情况下?
答案1
罪魁祸首可能是省电认证。
从维基百科:
The underlying concept of WMM PowerSave is that the station (STA)
triggers the release of buffered data from the access point (AP) by
sending an uplink data frame. Upon receipt of such a data (trigger)
frame the AP releases previously buffered data stored in each of
its queues.
因此,AP 将会延迟数据包,直到“收到指示”才释放它们。