Abstract: An arrangement for transmitting data in a telecommunications system utilizing an intelligent network and comprising at least one intelligent network service control point for providing intelligent network services and at least one intelligent network service switching point for providing a connection between the telecommunications system and the intelligent network services. In order to transmit the configuration data of the switching point to the service control point, the switching point is arranged to generate and send a configuration message to the control point for indicating the value of at least one parameter which belongs to the configuration data, and the control point is arranged to receive the configuration message. The invention further relates to an intelligent network service control point and a switching point, which can be utilized in the arrangement of the invention. The invention further relates to a method which can be utilized in the arrangement of the invention.

Abstract: The invention relates to a device for removing heat from an electronic component mounted on a circuit board. The device uses a working fluid circulated through cooling elements which are integrated into a metal matrix composite structure. The cooling elements are positioned and arranged within the structure to efficiently manage heat dissipation by evacuating the heat from the component in a multi-directional manner.

Abstract: The invention relates to a data transmission method and a base station system. The method comprises transmitting radio interface information over a bidirectional data link between a base station and a base station controller. The radio interface information comprises signalling information, user information and error control information. The method is characterized in that the radio interface information is compressed to fit into at least one ATM cell by replacing the original error control information of the radio interface information with simple status information. Other information may also be compressed and inserted into the ATM cell. Realization of the method is exemplified in the DECT system. The invention also relates to the necessary means and their protocol stacks.

Abstract: The invention relates to a locating method and an arrangement for determining the location of a terminal in a radio system comprising a plurality of base stations and terminals. At least two base stations with known locations transmit a signal used in locating the terminal, and the signals are transmitted in beams with directional antenna patterns and the direction of the beams is changed as a function of time. The terminal determines the location of the base station and the transmission direction of the signal used in location determination by means of the beam transmitted by said at least two base stations. Since the terminal is located at the intersection of the beams of the base stations transmitting from known locations, the location of the terminal can easily be determined. The solution takes multipath propagation into account.

Abstract: The invention relates to a method for determining a speed of a subscriber terminal and for selecting a cell in a radio system comprising a plural number of microcells and at least one umbrella cell covering the microcells. The method, and a radio system applying the method, comprise means (32 and 33) which use powers of received signals for producing a probability representing an interdependence between at least two powers measured at different points of time. The probability is used for determining the speed of the subscriber terminal in means (34). In addition, on the basis of the speed of the subscriber terminal, either a microcell or an umbrella cell is selected as a cell for the active operation of the subscriber terminal.

Abstract: In a digital mobile communication system, a packet radio system has been implemented by employing the radio interface of the mobile communication network. The packet radio system comprises packet radio support nodes (SGSN) connected to the mobile communication network, as well as gateway support nodes for providing an inter-connection to an external packet data network (15). The support nodes (SGSN, GGSN) are connected to an intra-operator packet switched backbone network (13). The serving support nodes and the gateway support nodes collect charging information on usage of the radio interface and the data network (15), respectively. The system is further provided with a billing gateway support node (BGGSN) connected to the internal backbone network (BGGSN) to receive user-specific charging information collected by the other support nodes, and to forward the charging information to a charging system.

Abstract: A method of checking the presence of mobile stations (DMRU:2, 500) communicating on a direct mode channel. The method comprises the steps of: a) sending (302) a presence inquiry message (106) provided with an identity from a first mobile station to a second mobile station (DMRU:2) on the direct mode channel, b) receiving said presence inquiry message at the second mobile station (DMRU:2), c) comparing the identity contained in said presence inquiry message (106) with the identity of the second mobile station, d) if the comparison shows that the identities are identical, sending an acknowledgment (107) containing the identity of the second mobile station from the second mobile station to the first mobile station on the direct mode channel, and e) indicating the result of the presence inquiry to the user (101) of the first mobile station.

Abstract: In a mobile communication system, signals which are transmitted from mobile stations moving relative to a base station are subject to a Doppler effect. A technique is described for compensating for that Doppler effect in the received signal, depending on the channel conditions for the received signal. Thus, the Doppler shift compensation is implemented only or mainly in good enough channel conditions.

Abstract: The invention relates to a method for estimating the quality of a connection and a diversity combination method in a digital radio system in which the signals transmitted are in burst form, the bursts comprising a training sequence; and to a receiver comprising a filter matched to the received signal. To effect simple estimation of the quality of the connection, the receiver comprises means for forming a result vector of at most the length of the training sequence from the symbols of the output signal of the matched filter and the corresponding symbols of the training sequence; means for computing a mean value and variance for the symbols of the result vector; and means for forming a quantity proportional to signal quality as a quotient of the squared mean value of the result vector and the variance of the result vector.

Abstract: A method and an arrangement for detecting the misuse of the call forwarding service in a mobile communication system. In the invention, call forwarding is activated for routing a call addressed to a mobile subscriber to a forwarding number supplied by the mobile subscriber; the forwarding number is modified by registering call forwarding to another number; the number of call forwarding registrations is counted subscriber-specifically; and an alarm is generated when the number of call forwarding registrations exceeds a predetermined maximum value during a predetermined period of time.

Abstract: The use of frequencies can be made more efficient in a mobile communications system with frequency hopping and a method of discontinuous transmission. However, continuous transmission calls unsuitable for discontinuous transmission will hereby cause excessive interference in the network. This invention concerns a channel allocation method in a mobile communications system where some radio connections are implemented with a discontinuous transmission function. The method identifies continuous transmission calls for which according to the invention a fixed-frequency traffic channel defined as a continuous transmission traffic channel is allocated. In addition, the invention concerns an arrangement for allocation of a traffic channel in a mobile communications system where some radio connections are implemented with a discontinuous transmission function. The arrangement is adapted to identify continuous transmission calls.

Abstract: The invention relates to a method and apparatus for transmitting group messages in a packet radio network comprising at least one support node and a plurality of group members and at least one defined area. The support node knows the identity of group members in said area. The network comprises broadcast connections and point-to-point connections. The method according to the invention comprises: keeping track of the group members that have not received the group message and determining whether or not their number exceeds a predetermined threshold; in response to a positive determination in the previous step, transmitting the group message over a broadcast connection; and in response to a negative determination, transmitting the group message to the group members over a point-to-point connection.

Abstract: In a call set-up method a called mobile station is checked upon routing an incoming call to see if incoming calls are barred. In prior art call set-up an incoming call barring prevents the routing of all calls destined to the mobile station. The call set-up method of the present invention is characterized by bypassing the incoming call barring in the case of a priority call. The invention also relates to a mobile communications system comprising a first subscriber register for permanent storage of subscriber data and a second subscriber register for temporary storage of subscriber data. Incoming call barring is set in subscriber data. The mobile communications system of the invention is characterized by the system begin arranged to bypass the incoming call barring in the case of a priority call.

Abstract: A problem with tape units (TU) arises when writing of data onto a tape is not successful. The computer does not know which blocks (1-25) have been stored successfully. Data blocks are buffered in a ring buffer for so long that one can be sure that the storing on the tape (TA) is successful. The ring buffer can be implemented as buffer areas (BA1, BA2) in disk units (W1, W2). Data blocks are stored not only in the tape unit but also in the first buffer (BA1), until it is filled. Then blocks arm stored in the second buffer (BA2), until this too is filled, and the first buffer (BA1) is used again. When there is a problem with the tape unit, the tape unit is re-initialized, whereby the data in the tape memory (TM) is lost. Loss of data is prevented by reading the data from the ring buffer.

Abstract: The invention relates to a method of processing such a short message arriving at a mobile switching center of a cellular radio network which arrives at the same time as a preceding short message is being sent from the mobile switching center of a B-subscriber. In addition, the invention relates to a mobile switching center of a cellular radio system implementing the method. When a short message addressed to a B-subscriber arrives at a mobile switching center at the same time as previously arrived short messages are being sent to the B-subscriber, then the exchange stores the newest short message in a queue. A problem arises when the total delay of the queue is longer than the maximum time, defined by time supervision, used on a connection between the exchange and a service center.

Abstract: A radio telephone system has a plurality of base stations 3, 4 and a plurality of mobile radios. The position of the mobile radios are determined by combining information at the base stations 3, 4 with information from additional position indicators, such as beacons 16a, 16b, 16c placed at intervals alongside a railway track 8. This enhanced information on the positions of the mobile radios enables channels to be reused on mobile radios with less physical separation than hitherto, thereby improving the efficiency of channel allocation.

Abstract: The invention relates to a method for admission control in an interference-limited cellular radio network. Admission can be accepted, if there is a sufficient number of free channels whose measured interference level goes below the interference threshold determined for the channel. The interference threshold of the channel is changed adaptively to ensure the best possible quality of the service offered. In case the quality value of the served radio connections is very good, the interference threshold value of the channel is raised.

Abstract: Power control of output RF signals in a mobile radio communication network is described. A base transceiver has a booster module (12) attached for increasing the power of the output RF signals. A power levelling loop controls the transmission power of the unboosted transceiver. When a booster module (12) is attached, the loop is extendible to control the power of the boosted RF signal output from the booster module. A node (52, 53) connects the amplifier circuit (4) of the transceiver and booster module (12). The node allows an RF signal to be supplied from the amplifier circuit (4) to the booster module (12) for transmission. The node (52, 53) also forms part of the extended power control loop and allows the detected level of the boosted signal to be returned to the transceiver.

Abstract: A method of switching partial minicells in an AAL2 switching network without the need for re-assembly of the partial minicells at intermediate nodes. Identification of each remainder partial minicell (432) is accomplished using an 8-bit channel identifier (450), a double octet identifier (950) or a triple octet identifier (1050) depending on traffic requirements. Each partial minicell is immediately transmitted based upon the identification code attached to each partial minicell.

Abstract: The present invention relates to preventing inconsistency between the data maintained in a master exchange and a backup exchange in a telecommunication system. To ensure a reliable data distribution, the system maintains a copy of the master exchange data in a slave exchange. When the slave exchange receives data from the master exchange or the backup exchange, the received data or the corresponding data previously stored in the slave exchange is selected for use on the basis of comparison of the information included in their update information. That is, the data stored in the slave exchange is sent to the exchange having sent the received data if the data stored in the slave exchange is selected for use; the received data is sent to the master exchange if the data received from the backup exchange is selected for use; and the received data is stored in the slave exchange if the received data is selected for use.