Abstract: Method for operating a wireless network, wherein at least one MIMO (Multiple Input Multiple Output) group of different stations will be constructed by a grouping algorithm based on a grouping metric for providing a MIMO group of different stations addressable simultaneously in space by a base station using MIMO techniques and meeting a definable level of performance quality, the grouping metric being based on an SINR (Signal-to-Interference and Noise Ratio) experienced by each station within the MIMO group. The method includes: computing an SNR (Signal-to-Noise Ratio) that a new station would experience without any interference when added to an existing MIMO group; computing an SINR estimate by correcting the SNR with the sum of spatial correlations between the new and each of the stations already present in the existing MIMO group; and using the SINR estimate for deciding whether the new station can be added to the existing MIMO group.

Abstract: A method for filling a WiMAX downlink frame by the base station of a WiMAX network, wherein the downlink MAC Protocol Data Units (MPDUs) are fitted into the WiMAX downlink frame by means of a DL-MAP scheduler, which allows the concatenation of downlink MPDUs from different connections in single bursts, the bursts having a rectangular shape in terms of the two dimensions—OFDMA (Orthogonal Frequency Division Multiple Access) symbols and subchannels—of a WiMAX downlink frame, is characterized in that the DL-MAP scheduler is configured in a way that it considers the concatenation of downlink MPDUs from different connections in single bursts based on the available and/or the remaining free space in the WiMAX downlink frame, such that it simplifies the DL-MAP scheduler task of filling the WiMAX downlink frame minimizing the amount of wasted radio resources.

Abstract: The invention relates to a hair removal apparatus (100) having a base body (10) and a slide (20), which is mounted thereon to be movable (displaceably). At least one wet shaver unit (40) comprising a razor blade, such as a blade cartridge for wet shaving, is mounted on the slide. Due to the mobility of the slide (20), this wet shaver unit (40) is protected from damage in the event of impact of the hair removal apparatus, e.g., in a fall to the floor. Certain target positions of the slide (20) can be secured with a slip clutch, such that they become unlocked on exceeding a minimum force that is acting and thereby release a movement of the slide.

Abstract: A communication network, wherein the network includes a plurality of communication elements that function as transmitters and/or receivers, in particular base stations and operating nodes being associated to at least one of the base stations, wherein the communication between the transmitters and the receivers is performed by way of generating and transmitting signals based on a multi-carrier modulation with a number of N subcarriers around a carrier frequency fc, is characterized in that the communication elements are configured to perform, upon receiving a transmitted signal, a sub-sampling of the received signal, wherein only a predetermined number of the inner-most subcarriers around the carrier frequency fc are employed for data reconstruction. Furthermore, a respective method for operating a communication network is described.

Abstract: A method for managing energy consumption in a wireless network, in particular a mobile radio network, wherein the wireless network includes radio access points that provide uplink and downlink connections to the wireless network for mobile stations, and wherein the uplink and the downlink connection of at least one mobile station being connected to the wireless network are physically served by different radio access points is characterized in that, at least temporarily, one or more of the radio access points function as unidirectional radio access points that provide either uplink connections or downlink connections—radio resource access—for the at least one mobile station. Furthermore, a corresponding wireless network system is disclosed.

Abstract: In order to allow an efficient use of data or frame aggregation techniques with real-time communications a method for operating a wireless network, especially a Wi-Fi technology based network, is described, wherein the network includes at least one wireless device for transmission of data and wherein the device may use a data or frame aggregation technique to provide an adjustable amount of aggregation. The method is characterized in that the amount of aggregation provided by the aggregation technique will be adjusted depending on a level of congestion in the network. Further, an according wireless network is described, preferably for carrying out the above mentioned method.

Abstract: A method for controlling the admission of a flow to a network, particularly a WiMAX (Worldwide Interoperability for Microwave Access) network, wherein an estimation of maximum capacity required within a link of the network and/or within the network will be performed for examining, whether the flow requesting to enter the network with at least one QoS (Quality of Service) reservation of resources can be admitted, by finding first sets of intersections between all pairs of QoS reservations, i.e. the QoS reservations already accepted within the link and/or within the network and the at least one QoS reservation requested by the flow. The method is characterized by structuring the found sets of intersections by building a matrix of intersections of QoS reservations and—based on the matrix—deriving the rest of the sets of intersections between the intersections found, based on information obtained regarding the QoS reservations involved in each intersection.

Abstract: A method for operating a mobile terminal as access point, wherein the access point composes a network together with one or more associated client stations, wherein the access point has an operational mode of alternating awake and sleep periods, and wherein the access point broadcasts beacon frames at regular intervals for signaling communication parameters to the associated client stations, is characterized in that the access point, based on the level of activity in the network, adjusts the communication parameters by slowing down or accelerating the access of the associated client stations to the network. Furthermore, a corresponding mobile terminal is disclosed.

Abstract: A method for operating a wireless terminal as an access point—access point terminal (2)—that connects a set of one or more client terminals (4) to an external network, wherein a schedule of absence periods is established during which the connected client terminals (4) are not allowed to transmit data to the access point terminal (2), wherein the absence periods together with corresponding presence periods are scheduled at regular intervals and have certain durations, is characterized in that an adaptation of the absence/presence periods' duration and/or interval parameters is executed on the basis of the bandwidth available in the external network and the amount of traffic transmitted between the access point terminal (2) and the connected client terminals (4). Furthermore, a corresponding wireless terminal is disclosed.

Abstract: A method for supporting admission control and/or path selection in a communication network, the network including a plurality of wireless communication links, possibly of different link technologies, established between a plurality of network nodes, includes the steps of partitioning the communication links of the network into groups of communication links—link groups—, assigning each link group an associated link group controller that is configured to observe and/or measure the performance and/or quality of the link group, based on the observations and/or measurements, computing estimates of metrics for the capacity of the respective link group and the costs for using each of the communication links of the respective link group, and transmitting the estimates to at least one resource management entity being configured to take admission control and/or path selection decisions on the basis of the estimates.

Abstract: The present invention is concerned with a combined hair removal device that comprises a electrical hair removal device having at least a first coupling structure, a wet shaving device having at least a second coupling structure, the first and second coupling structures being configured to mate with each other to detachably couple the electrical hair removal device and the wet shaving device in at least a first coupling position, the electrical hair removal device having an elongated handle provided for individual operation of the electrical hair removal device in a detached state, and the wet shaving device having an elongated handle provided for individual operation of the wet shaving device in a detached state, wherein the wet shaving device comprises a wet shaving head that has at least a blade having a sharp, elongated edge arranged for contacting the skin during a shaving operation so as to cut off hairs growing on the skin.

Abstract: The invention relates to a hair removal apparatus having a housing (1) which holds a drive motor (2) for at least one first cutting system designed as a trimmer (4). The trimmer (4) has at least two cutting parts (7, 8), each having at least two rows of teeth that are drivable relative to one another. The hair removal apparatus has at least one other second cutting system, which has at least one sharp-edged razor blade (22). The second cutting system is arranged on a carrier element (19) which is movably guided on the housing (1). The carrying element (19) is adjustable in at least two different positions by a corresponding switching movement by the user. The trimmer (4) is always connected to the drive motor (2).

Abstract: A method for filling a WiMAX downlink frame by the base station of a WiMAX network, wherein the downlink MAC Protocol Data Units (MPDUs) are fitted into the WiMAX downlink frame by means of a DL-MAP scheduler, which allows the concatenation of downlink MPDUs from different connections in single bursts, the bursts having a rectangular shape in terms of the two dimensions—OFDMA (Orthogonal Frequency Division Multiple Access) symbols and subchannels—of a WiMAX downlink frame, is characterized in that the DL-MAP scheduler is configured in a way that it considers the concatenation of downlink MPDUs from different connections in single bursts based on the available and/or the remaining free space in the WiMAX downlink frame, such that it simplifies the DL-MAP scheduler task of filling the WiMAX downlink frame minimizing the amount of wasted radio resources.

Abstract: A method of assembling a frame in an Orthogonal Frequency Division Multiple Access (OFDMA)-based communication system, wherein data packets to be transmitted from a broadcast station to a receiver are given a rectangular shape in terms of the two dimensions—time and frequency—of the OFDMA frame, and wherein the data packets are successively fitted into the OFDMA frame by way of a frame assembly scheduler, is characterized in that the filling process of the OFDMA frame is based on an ordered list of data structures that represent the current empty space within the OFDMA frame. Furthermore, a corresponding communication system is disclosed.

Abstract: The invention relates to a hair removal apparatus (100) having a base body (10) and a slide (20), which is mounted thereon to be movable (displaceably). At least one wet shaver unit (40) comprising a razor blade, such as a blade cartridge for wet shaving, is mounted on the slide. Due to the mobility of the slide (20), this wet shaver unit (40) is protected from damage in the event of impact of the hair removal apparatus, e.g., in a fall to the floor. Certain target positions of the slide (20) can be secured with a slip clutch, such that they become unlocked on exceeding a minimum force that is acting and thereby release a movement of the slide.

Abstract: The invention relates to a hair removal device such as for example an electric shaver or a wet shaver, comprising a main device element (10, 20) which accounts for the major portion of the overall weight, and a separate element (30, 40) which can be coupled therewith and which comprises for example a wet-shave blade cartridge (40). The separate element (30, 40) is connected to the main device element (10, 20) via a coupling (23, 33). Said coupling (23, 33) is designed to open under the effect of forces that exceed a minimum force. When the hair removal device (100) is dropped, the separate element (30, 40) is not damaged despite the comparatively greater weight of the hair removal device.

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.

Abstract: The invention relates to a hair removal apparatus having a trimmer (4), whereby the trimmer (4) has at least two cutting parts (7, 8) each having rows of teeth drivable individually relative to one another, and having at least one wet shaver unit (21), which has at least one sharp-edged razor blade (22), characterized in that the wet shaver unit (21) is arranged on a carrying element (19) that is guided movably on the housing (1), said carrying element being adjustable by the user in at least two different positions through a corresponding switching movement, the first position being a storage position of the wet shaver unit and the second position allowing simultaneous removal of hair by the trimmer (4) which is leading in the direction of use (P) and the trailing wet shaver unit (21).

Abstract: A method for controlling the communication with mobile stations in a network, preferably in a WLAN (Wireless Local Area Network) according to the IEEE 802.11 standard, wherein the network comprises access points through which the mobile stations are associated with the network and wherein the mobile stations can be set to power save mode is—with respect to an especially energy-efficient operation of the mobile station-designed in such a way that paging signaling is performed in order to locate a mobile station.

Abstract: A hair removal apparatus having a housing, a drive mechanism for driving at least a first hair removal unit, and an abrasive element is described. The abrasive element and the first hair removal unit are in close proximity and are equally driven. The abrasive element is arranged and carried in an attachment mountable on and demountable from the housing as an addition to the first hair removal unit.