Abstract: A method for performing discontinuous transmission in an asynchronous transfer mode is described, wherein a downlink transmission of an ATM cell is performed each time a predetermined number of signal frames indicating a speechless period has been supplied, and wherein an uplink transmission of an ATM cell is only performed when a signal frame indicating a useful information has been supplied. In the downlink transmission, an idle frame can be generated at the receiving end, when no ATM cell is received. In the uplink transmission, a signal frame indicating a useless information can be generated, when no ATM cell is received. Thereby, only those signal frames required at the receiving end are transmitted. Moreover, known transmission functions and elements of a synchronous transmission system can be used at the respective ends of transmission.

Abstract: The invention is directed to a method for controlling delays in a cellular telecommunications network. The delay control method according to the invention is based on a hierarchical structure of delay controlling entities, which preferably communicate only with entities directly above or below them in the hierarchy. In the downlink direction, an entity receiving data, such as a base station or a splitting unit, sends a timing report to the entity sending the data if the data is received too early or too late, whereafter the sending entity may adjust the sending time of data. The same reporting and adjusting process may be repeated through all levels of the control hierarchy, resulting in a collective control of delays from the top of the hierarchy, for example from a RNC, to the bottom, for example to a base station.

Abstract: A method for managing multiple, independent, simultaneous calls between a mobile communications network and a subscriber terminal. For each subscriber terminal there is a first upper limit which is related to the capacity of its radio interface. Calls are limited to a number which does not result in exceeding the first upper limit. There is also, for the number of simultaneous calls, at least one second upper limit which is not lower than zero. The actual number of simultaneous calls between the network and the subscriber terminal is monitored. A new call to/from the subscriber terminal is allowed only if the actual number of simultaneous calls is less than the at least one second upper limit. Preferably, there is a separate second upper limit for each subscriber and for each of several call types, such as voice, data and fax calls.

Abstract: According to the invention, better requests resulting in the load being under a first predetermined limit are admitted. If a bearer request would result in the load being over the first predetermined limit, the admission control entity tries to make room for the bearer request, i.e. release resources without degrading the quality of service (QoS) provided for the existing bearers. The admission control entity may perform this by adjusting power control parameters, handover control parameters, or both. If the admission control entity is able to make enough room for the new bearer or bearers, the request is admitted.

Abstract: A method for distributing timing information in a radio communication system comprising: a network including a plurality of base stations, each capable of transmitting and receiving radio communication signals to and from a respective coverage area, and including a first base station and one or more neighboring base stations whose coverage areas neighbor the coverage area of the first base station; and a first mobile station capable of receiving signals from the first base station; the method comprising: estimating the differences in timing between those base stations; and transmitting indications of those differences in timing to the first mobile station.

Abstract: A method for transmitting data packets in multiple data flows to/from a mobile station in a mobile communications system. A data transmission path is formed for routing data packets. Multiple profiles are associated with the data transmission path, each profile comprising at least one quality of service parameter, or QoS parameter. Each flow or data packet is provided with a profile tag indicating one of the multiple profiles. Scheduling and policing the transmission of individual data packets is based on at least one QoS parameter of the profile indicated by the profile tag associated with the data flow in question.

Abstract: A method and equipment for detecting an interfering signal in a time division multiple access radio receiver, in which case, samples are taken from a received signal in symbol sequences over a time division multiple access timeslot, a signal path corresponding to the time division multiple access timeslot, or a portion thereof, is generated by a modulation detector, an error estimate representing the erroneousness of the signal path generated is determined, the error estimate is compared with a predetermined threshold value, and the reception of the interfering signal is recognized if the error estimate is greater than the predetermined threshold value.

Abstract: The invention relates to a method of processing multipath-propagated components of a signal in a communications system. In the method, a signal transmitted on the radio channel of the communications system is received in a RAKE receiver and an impulse response of the radio channel is formed. In the method, one or more taps having the highest signal energy in the impulse response are located and matched to a short matched filter. A weighting value for the impulse response is calculated on the basis of the one or more taps in the matched filter and a deviation between the weighting value and the center point of the matched filter is compared with a threshold value set for the deviation. The matched filter is moved toward the deviation when the deviation exceeds the threshold value set for the deviation.

Abstract: A control unit, ATM cell and process for writing data into registers of at least one device comprising a management interface or for reading values from registers of such devices, wherein communication between at least one management unit which generates the data to be written or which undertakes further processing of read-out data and the control units via an ATM inband protocol occurs so as to provide an option to inexpensively read or write data. The control units, which have access to the registers of at least one of the devices by way of the management unit, with instructions and information for specific devices connected to the respective control unit, are integrated into the payload of the ATM cells. The control units implement the instructions and, if applicable, transmit a response ATM cell back to the management unit.

Abstract: A method and an apparatus implementing the method for optimizing data transmission resources, particularly resources on the air interface, between terminals and a network element. To diminish capacity differences of different legs or connection parts in the connection, the network adapts (2-5, 2-10A, 2-13) the traffic channel resources between the terminal and the network to be suitable for the outward connection of the network element, e.g. the connection to another mobile station or to a fixed network, by observing and comparing the data transmission capacities of the connection parts or by receiving from the outward connection part the information (2-4, 2-9A, 2-9B, 2-12, 2-14) on its data transmission capacity.

Abstract: The invention relates to an interworking method and apparatus for a data connection between a first terminal supporting a first processing scheme and a second terminal supporting a second processing scheme, wherein the first and second processing schemes are checked, and the first processing scheme is adapted to the second processing scheme, when the checking indicates that the first processing scheme is not supported by the second terminal. Thus, a mapping is performed and different processing capabilities are used on different portions of the data connection.

Abstract: The present invention relates to a method of controlling load in a mobile communication system in a system in which mobile stations include means for utilizing discontinuous transmission. In order to utilize the traffic capacity of the system more efficiently than before, at least one mobile station is equipped with regulation means for regulating its parameters related to discontinuous transmission, and a control signal is transmitted via a radio path to the at least one mobile station for regulating its parameters related to discontinuous transmission in such a manner that the mobile station transmits telecommunication signals to the other parts of the system more seldom or more often.

Abstract: A method and an arrangement for determining correction parameters used for correcting DC-offset of an I/Q modulator in a transmitter comprising an I/Q modulator and a corrector for correcting the DC-offset caused by the I/Q modulator are presented. The method comprises sampling the I/Q-modulated test signals, which are formed from I/Q-plane test vectors, A/D-converting the signal samples taken from the test signals, I/Q-demodulating the signal samples digitally into I- and Q-feedback signals, determining the DC-offset caused by the I/Q modulator on the basis of the test vectors and the feedback vectors caused by the test vectors and formed from the I- and Q-feedback signals, and determining the correction parameters of DC-offset on the basis of the determined DC-offset.

Abstract: The idea of the present invention is to enable the transmission of control information via several logical channels and to select the transmission channel dynamically by using a predefined selection rule. There are at least two logical channels that can be selected for the transmission of information. These logical channels should preferably include at least one signalling channel which is allocated in a connection-specific manner. The signalling channels which are allocated in a connection-specific manner can be signalling channels which use the capacity of the traffic channel of independent singalling channels which are allocated separately from traffic channels. At least one of the logical channels available for selection should preferably also be a shared channel allocated to several connections for joint signalling.

Abstract: The invention relates to a method of transmitting a synchronized channel in a radio transmitter and to a radio transmitter. The method comprises transmitting normal radio bursts on a normal channel asynchronously. In the invention, synchronized timing is obtained, synchronized radio bursts (SB) are formed, and a synchronized radio burst is transmitted in the place of a normal radio burst (NB). The length of the synchronized radio burst (SB) is at most half of the length of the normal radio burst (NB). The transmission of the synchronized radio burst (SB) is in synchronization with the obtained synchronized timing.

Abstract: The invention relates to a method for transmitting data from a radio network subsystem over a radio link to user equipment in a mobile telephone system, a radio network subsystem, and user equipment. The radio network subsystem transmits a dedicated physical channel to the user equipment. The dedicated physical channel comprises a dedicated physical control channel and a dedicated physical data channel. The dedicated physical channel is formed by frames to be transmitted to the radio link. During transmission, the radio network subsystem spreads each channel with a spreading code, the length of which spreading code, i.e. spreading factor, determines the data transmission rate.

Abstract: The invention relates to a method and a network node for providing a packet-switched network user with a service via the intelligent network. In the packet network, a session is established for routing functionality of packets originating from and terminating at the user when the user registers to the network. To implement the services according to the intelligent network principles, a control record (SR) for the session is added to the packet network node(s) which control record recognises the events which trigger the connection to the intelligent network. Alternatively, the control record can be formed when the user activates the Packet Data Protocol PDP context.

Abstract: The invention relates to data transmission in a telecommunication system. An information unit is asynchronously transmitted over a transmission link, such as a radio interface, in timing units called radio frames. Information units reside in successive radio frames, each radio frame includes at least one whole information unit and part of an information unit split in successive radio frames. Thus, the frames contain asynchronous information units. One or more bits in a radio frame is reserved for phase indication, based on which a receiver synchronizes to the asynchronous information units. Phase indication defines a sequence of N successive radio frames and indicates for each frame which of the N possible frames in the sequences said frame is. The receiving unit indicates phasing between the frames and the asynchronous information units in the frames by synchronizing to said phase indication.

Abstract: A packet switching control system and method are described, for controlling a packet switched connection between a subscriber terminal and an end terminal identified by a connection endpoint identification in a communication network. A subscriber-specific screening list for a plurality of connection endpoint identifications is provided, wherein an subscriber-specific screening control of the packet switched connection is performed on the basis of the screening list. The screening list may contain detection point settings for an IN interrogation so as to provide an interworking function between the IN and the packet network. Moreover, the screening list may include a charging information to thereby define different charging parameters for packet connections to different connection endpoints. This enables the subscriber to define price limits for predetermined connections.

Abstract: A method for managing facilities of a first mobile station in a mobile communication system, in which multiple alternative subscriber profiles can be defined for mobile stations, including establishing a connection to a predetermined service control function, inputting information required for identification of the first and a second mobile station to the service control function, retrieving first mobile station's subscriber data from the first mobile station's subscriber register, forming a new subscriber profile for the second mobile station based on the subscriber data retrieved from the first mobile station's subscriber register such that calls can be made with the second mobile station using the first mobile station's subscriber data, and storing reference to the second mobile station for the first mobile station in the subscriber register such that calls terminating at the first mobile station are forwarded to the second mobile station.