Abstract: A method for detecting a worn link in a chain of a host arrangement includes measuring a first signal while the hoist operates. A hoist arrangement and use of a signal for detecting a worn link in a chain are also disclosed.

Abstract: Disclosed is a method for processing ash, particularly fly ash, in which method several elements are separated from the ash. In the method both noble metals and rare earth elements are separated.

Abstract: A method for detecting a worn link in a chain of a host arrangement includes measuring a first signal while the hoist operates. A hoist arrangement and use of a signal for detecting a worn link in a chain are also disclosed.

Abstract: Disclosed is a method for processing ash, particularly fly ash, in which method several elements are separated from the ash. In the method both noble metals and rare earth elements are separated.

Abstract: The present invention relates to Wireless Local Area Networks and Access Points in such networks, in particular it relates to the control and use of varying beacon intervals in such networks. According to the present invention, the beacon frames in the Wireless Local Area Network are provided with an adaptive beacon interval. The interval is adapted in dependence on a current network load such that the length of the beacon interval is decreased when the network load is decreased and increased when network load is increased. The invention is applicable in existing as well as future IEEE 802.11 standards.

Abstract: An antenna system with two antennas provides the possibility to operate at least two different radio communication systems with one radio communication system operating on one single antenna of the antenna system and another radio communication system operating on both antennas of the antenna system wherein the antenna system serves as a diversity antenna system. This kind of antenna system is designed to be employed particularly in small devices with restricted measurements. Especially, an implementation of an antenna system for dual use of GSM/E-GSM/DCS operation and WLAN operation is presented.

Abstract: A mechanism for supporting the decision on performing a communication connection changeover of a subscriber terminal in a wireless communication network, in particular in a multiple band WLAN, is proposed. The subscriber terminal is a to communicate with an access node on two or more frequency bands. AP related communication information are detected which comprises, besides information indicating a multiple band capability, a traffic load, a frequency band coverage and/or a frequency channel information. The communication information are broadcasted, for example, by means of the AP beacon frame, processed and used for a decision on a communication connection changeover of the subscriber terminal.

Abstract: The invention relates to a method for selecting an access point in a wireless communication system comprising mobile terminals and access points. To enable the mobile terminals to take into account the prevailing conditions within the entire coverage area of an access point more effectively than before, sets of attributes are sent from mobile terminals to the currently serving access point, each set to contain at least one attribute indicating the quality of a wireless link between the serving access point and the sending mobile terminal. Based on the sets, a service report describing current service conditions in the coverage area of the access point is formed and transmitted to at least one mobile terminal. This terminal examines the service report of at least one access point and, based on the examination, selects the access point to which a wireless link is to be established.

Abstract: The invention relates to a method for selecting an access point in a wireless communication system comprising mobile terminals and access points. To enable the mobile terminals to take into account the prevailing conditions within the entire coverage area of an access point more effectively than before, sets of attributes are sent from mobile terminals to the currently serving access point, each set to contain at least one attribute indicating the quality of a wireless link between the serving access point and the sending mobile terminal. Based on the sets, a service report describing current service conditions in the coverage area of the access point is formed and transmitted to at least one mobile terminal. This terminal examines the service report of at least one access point and, based on the examination, selects the access point to which a wireless link is to be established.

Abstract: Apparatus, and an associated method, provides for field-testing and calibration of a WLAN device. In testing of the receive portion of the WLAN device, test apparatus is provided with a transmit signal of known characteristics. The test apparatus selectably attenuates the transmit signal to form an attenuated signal. The WLAN device is connected to receive the transmit signal, once attenuated by the test apparatus. Responsive to differences between measured and calculated characteristics of the transmit signal, calibration for determination of proper operation of the WLAN device is made and calibration of the WLAN device is effectuated.

Abstract: A switching and connecting arrangement for coupling external and internal antennas, wherein the arrangement comprises at least a diversity switch arranged on a circuit board for selecting a first antenna or a second antenna. The arrangement also comprises a first integrated antenna switch arranged on said circuit board for selecting a first antenna and connecting it electrically to said diversity switch, wherein the first antenna switch is forced mechanically to select the first external antenna instead of the first internal antenna when it is coupled to said switch, and to select the first internal antenna when disconnected; a second integrated antenna switch arranged on said circuit board for selecting a second antenna and connecting it electrically to said diversity switch, wherein the second antenna switch is forced mechanically to select the second external antenna instead of the second internal antenna when it is coupled to said switch, and to select the second internal antenna when disconnected.

Abstract: The present invention relates to a switching and connecting arrangement for coupling external and internal antennas, wherein the arrangement comprises at least a diversity switch (301) arranged on a circuit board (300) for selecting a first antenna or a second antenna.

Abstract: The invention relates to a method for selecting an access point in a wireless communication system comprising mobile terminals and access points. To enable the mobile terminals to take into account the prevailing conditions within the entire coverage area of an access point more effectively than before, sets of attributes are sent from mobile terminals to the currently serving access point, each set to contain at least one attribute indicating the quality of a wireless link between the serving access point and the sending mobile terminal. Based on the sets, a service report describing current service conditions in the coverage area of the access point is formed and transmitted to at least one mobile terminal. This terminal examines the service report of at least one access point and, based on the examination, selects the access point to which a wireless link is to be established.

Abstract: An antenna coupling system and method for operating same are adapted to operate a common antenna with a first transceiver and a second transceiver. The first transceiver provides a quality signal relating to a received radio frequency (RF) signal, which is supplied to the antenna coupling system. The antenna coupling system is operable with at least one low loss mode and at least one high loss mode in accordance with the provided quality signal as desired. The antenna coupling system couples selectively one of the first and the second transceivers to the common antenna in the at least one low loss mode such that in the meantime the other one is disconnected from the common antenna. The antenna coupling system couples simultaneously the first transceiver and the second transceiver to the common antenna in the at least one high loss mode.

Abstract: The present invention relates to Wireless Local Area Networks and Access Points in such networks, in particular it relates to the control and use of varying beacon intervals in such networks. According to the present invention, the beacon frames in the Wireless Local Area Network are provided with an adaptive beacon interval. The interval is adapted in dependence on a current network load such that the length of the beacon interval is decreased when the network load is decreased and increased when network load is increased. The invention is applicable in existing as well as future IEEE 802.11 standards.

Abstract: The invention relates to a method for selecting an access point in a wireless communication system comprising mobile terminals and access points. To enable the mobile terminals to take into account the prevailing conditions within the entire coverage area of an access point more effectively than before, sets of attributes are sent from mobile terminals to the currently serving access point, each set to contain at least one attribute indicating the quality of a wireless link between the serving access point and the sending mobile terminal. Based on the sets, a service report describing current service conditions in the coverage area of the access point is formed and transmitted to at least one mobile terminal. This terminal examines the service report of at least one access point and, based on the examination, selects the access point to which a wireless link is to be established.

Abstract: The invention relates to a method in a wireless data transmission system (1) which comprises wireless terminals (MT1-MT4), at least a first access point (AP1) and a first access point controller (AC1), a second access point (AP2) and a second access point controller (AC2). In the data transmission, data frames are used. In the invention, two allocation strategies are defined of which two are selected at a time. From the data frames, a first starting point (TS11, TS21) and a second starting point (TS1n, TS2n) are determined. In order to select a strategy, it is examined whether there is other traffic on the channel. If other traffic can be detected, it is examined which allocation strategy is selected, and an allocation strategy which is different from that of the examined connection is selected for the connection to be set up. However, if traffic is not detected, it is possible to select the allocation strategy freely.

Abstract: A method and an apparatus for controlling release of a hoisting motor brake in a hoisting apparatus, where electricity is used as the driving force and a squirrel cage motor as the hoisting motor for hoisting or lowering a load attached to a hoisting member of the hoisting apparatus. Controlling of brake release comprises measuring the current and supply voltage of the hoisting motor after the start-up period of the hoisting motor and determining a variable which describes the load of the hoisting apparatus from the current and supply voltage. The variable describing the load is compared with a pre-determined limit value and hoisting or lowering of the load is interrupted if the variable describing the hoisting apparatus load exceeds the limit value set for the hoisting movement when the load is hoisted or if it exceeds the limit value set for the lowering movement when the load is lowered.

Abstract: An antenna system with two antennas provides the possibility to operate at least two different radio communication systems with one radio communication system operating on one single antenna of the antenna system and another radio communication system operating on both antennas of the antenna system wherein the antenna system serves as a diversity antenna system. This kind of antenna system is designed to be employed particularly in small devices with restricted measurements. Especially, an implementation of an antenna system for dual use of GSM/E-GSM/DCS operation and WLAN operation is presented.

Abstract: An antenna structure which comprises at least one active and at least one parasitic antenna conductor and which is arranged to be fitted on top of a planar electroconductive surface at a distance from said surface which is arranged to be used as a ground plane for said antenna structure, and which antenna structure comprises, arranged parallelly at a distance from each other, a first antenna conductor and a second antenna conductor which have an electrical length of approximately ¼ of the wavelength of the used frequency and which are parallel with said ground plane, and which comprise opposite first ends and opposite free second ends, wherein the antenna structure is equipped with symmetrical conductors for short-circuiting the first ends to said ground plane and a first conductor for coupling the supply to a desired point between the first end and a second end of the active antenna conductor.