Abstract: A method to optimize the energy consumption of a station (STA)—as for example a laptop, palmtop or a mobile phone—in a network, preferably a WLAN according to the IEEE 802.11 standard where a station (STA) sending Power Save (PS) polls to an Access Point (AP) is characterized—regarding an efficient energy management of the station with a possibly low energy consumption—in that the Access Point (AP) confirms the receipt of a Power Save (PS) poll by sending an acknowledgement frame including information which indicates to the station (STA) whether a frame is stored for it at the Access Point (AP).

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.