Abstract: A method for controlling the communication with mobile stations over a wireless network, preferably a WLAN (Wireless Local Area Network) according to the IEEE 802.11 standard, wherein the network comprises at least one access point via which the mobile stations are associated with the network, wherein the mobile stations can be set to a power save mode and wherein data frames can be received by a station in power save mode at specific service starting times is—regarding a possibly overlapping-free transmission of data frames to the mobile station at the service starting times—designed in such a way that the service starting times are determined by taking into consideration the knowledge about existing scheduled transmissions between mobile stations and the access point and/or further information.

Abstract: A method to improve the Quality of Service (QoS) in a wireless network, preferably in a WLAN according to the IEEE proposal 802.11e comprising an Access Point (AP) and at least one mobile station (STA) with different Access Categories (ACs) being defined for the transmission of frames depending on their priority, and in which a Power Save Mode (PSM), preferably according to IEEE standard 802.11, is used in the network is characterized in that the PSM queue is separated into several sub-queues at the Base Station.