Abstract: The invention comprises a method for establishing a signaling connection with a mobile station, which method is particularly applicable to third-generation mobile communications networks. A database is created at a node of a mobile communications network, and a mobile station connected with the network sends to said database information about all its subscriber identities (403). In the database, information is added (404) to the subscriber identity information which may be useful when said mobile station is paged (410, 411). Such contactability information includes e.g. the mobile station's location information, information about existing signaling connections and information about the primary paging channel monitored by the mobile station. The contactability information is updated according to changes detected in the status of the mobile station (406). The database will be discontinued for a mobile station that has had no connections for a predetermined time.

Abstract: The invention relates to a frequency hopping method and a base station including, at the receiver end, a number of baseband processing units and broadband receiver units, which form RF sub-bands and receive frequency hopping signals according to a frequency hopping sequence from the RF sub-bands they have formed. The base station includes, at the receiver end, a switching device and channelling unit, which receive baseband signals from an intermediate band and each of which is connected to a receiver unit forming a particular RF sub-band. The switching device selects, according to the frequency hopping sequence, the channelling unit whose baseband output provides the baseband signal which is connected to the baseband processing unit. The channelling unit places the baseband signals to its baseband output according to the frequency hopping sequence.

Abstract: A method and apparatus implement network planning in a radio system in a desired area. To determine transmitter coverage, a vector map describing the surroundings of the transmitter and containing a description of buildings and surfaces reflecting radio waves in the area is used. The transmitter signal strength is measured at points of a desired area. A subset is selected among the points, path attenuation is determined between all subset points using a ray tracing method, and the calculated values are stored in a memory. When performing network planning, a transmitter and a receiver are located at the points in the areas; a given number of the most significant signal paths among the possible signal propagation paths between the transmitter and the receiver is searched for using the values stored in the memory, and the transmitter signal strength is determined at the receipt location point using the ray tracing method.

Abstract: The invention relates to a channel allocation method and a system for channel allocation in a cellular radio network which comprises at least one base transceiver station (100) and at least one subscriber terminal (104) connected to the base transceiver station. (100) over a bi-directional radio link (108). The invention is characterized in that the impact of a possible channel allocation on the interference level of the cellular radio network is taken into account in the channel allocation decision. This interference control method makes it possible to increase the capacity of a cellular network and to utilize it more efficiently.

Abstract: The invention is a method and system for compressing a current value into a minimum number of bits for transmission from a compressor to a decompressor. A method in accordance with the invention includes maintaining a series of at least one previous value at the compressor, each previous value having different k least significant bits and which have been transmitted to the decompressor; determining a value of k representing a smallest number of bits which allows successful decompression of the current value at the decompressor using as a reference value any value in the series of at least one previous value; and transmitting the current value from the compressor to the decompressor in compressed form with the k least significant bits of the current value.

Abstract: Methods and apparatus for signal monitoring of messages in a telecommunications network having a plurality of switches and network elements therein alleviate the need for external hardware to be hooked up to nodes of the network to determine whether faults have occurred at the nodes. A signal monitoring application disclosed herein stores related message signals and messages in a relational database wherein messages and signals having common elements can be easily and quickly viewed. The SIMO application cross-references the messages and signals in the relational database according to a transaction table which categorizes and stores the messages according to parameters set out in the transaction table. This allows the messages to be ranked and viewed very quickly without the need to process them and expend valuable computational time and resources.

Abstract: The invention relates to a method and an ATM Network Element (ATM NE-1) for automatic protection switching of a Transmission Convergence Sublayer SubNetwork Connection TCS SNC.

Abstract: A method of directional radio communication in a wireless communications network between a first station and a second station. The method comprises the steps of transmitting a plurality of communication bursts from the first station to the second station, each of the bursts being substantially continuous and comprising a reference signal having a plurality of reference signal components and a data signal having a plurality of data signal components wherein respective signal components of the reference signal are transmitted in substantially different directions, the data signal components being transmitted in the substantially different directions.

Abstract: A method for estimating a frequency error in a communication system, in particular in a mobile communication system involving successively sampling sample sets from a signal to be received at given points corresponding to symbol sequence points of the receiver, and frequency error estimates corresponding to each point are determined based on the sample sets at the given points and variance of the frequency error estimates of every given point is calculated. The frequency error estimate of the signal to be received is selected based on the frequency error estimates of the given point whose variance is least.

Abstract: A method for transmitting a call parameter, such as the identifier (A#) of an A subscriber, to a first switching centre (GMSC) from a second switching centre (VMSC) serving the terminal (MS) of an A subscriber, when both switching centres (GMSC, VMSC) are connected to an intelligent network service control point (SCP). The second switching centre (VMSC) receives from the A subscriber a call set-up request (2) to set up a call through the first switching centre (GMSC). The second switching centre (VMSC) transmits to the service control point (SCP) an intelligent network service initiation message (4) which contains the call parameter (A#). The service control point saves (6) into its memory the call parameter (A#) to wait for a second intelligent network service initiation message (12) associated with the same call. The second switching centre (VMSC) routes (10) the call to the first switching centre (GMSC).

Abstract: The invention relates to a method of adjusting the radio frequency of a repeater (302) in a cellular radio network. The repeater (302) amplifies radio signals (170) of a bi-directional radio connection between a base station (100) and a subscriber terminal (150) at least at one particular radio frequency. In accordance with the invention, the repeater (302) monitors the radio signals (170) transmitted by at least one base station (100). The repeater (302) automatically tunes to amplify the signals (170) of the particular radio frequency on the basis of information included in the radio signals (170) it has monitored. The monitored radio signals (170) include a control channel, for example a broadcast control channel BCCH, comprising information on the operating frequencies of the base station (100). Monitoring means (404) are preferably similar to a subscriber terminal (150).

Abstract: A security procedure for a Universal Mobile Telephone Service (UMTS) mobile communication system includes detecting a communication failure between a Radio Network Controller (RNC) which controls radio coverage within a prescribed geographical area and a Mobile Station (MS) in the geographic area, authenticating the MS and setting a new security parameter in response to the communication failure. The security parameter to be changed may be a ciphering key CK or an integrity key IK. Moreover, the steps of authenticating and setting a new security parameter may be performed separately or simultaneously.

Abstract: A method of selecting radio transmission resources of a first station for communicating between the first station and a plurality of second stations in a wireless communications network. The method comprises the steps of grouping the plurality of second stations based on a traffic characteristic of respective ones thereof, and selecting at the first station radio transmission resources for communication with the second stations such that the transmission resources are used substantially equally within each group.

Abstract: A method and system for charging a subscriber (10) in a telecommunications network comprising nodes (11 and 12) connected to a mediator unit (14), whereby a billing unit (15) comprising the subscriber's (10) charging data can be located outside the network used, preferably in the subscriber's (10) home network, in a subscriber identity module (SIM) or behind an open service architecture (OSA) associated with the network, the method comprising the following steps of: noting in the nodes (11 and 12) the event data related to the services used by the subscriber (10) and reporting the event data to the mediator unit (14), the event data being converted substantially in real time in the mediator unit (14) by applying the network charging algorithms to provide a charging data format understandable to the billing unit (15), expressed preferably as an amount of money spent or as charging pulses, for the updating of the subscriber's (10) charging data between the mediator unit (14) and the billing unit

Abstract: The invention relates to a method for calculating a model to be used for controlling cellular network capacity and for facilitating the control of the capacity, the method comprising the generating of variable groups from cellular network variables and the determining of the interdependencies of the variable groups of the cellular network. The invention is characterized in that linear combinations dependent on each other are searched for in the variable groups, the dependence between the linear combinations and the strength of the dependence being measured by applying a canonical correlation coefficient; a multidimensional dependence between two variable groups in pairs being expressed in the method by only a few canonical variable pairs. Canonical correlation analysis facilitates the modelling of dependencies between large variable groups and the determining of the most important variables.

Abstract: The invention relates to a reception method and a receiver to receive signals supplied from a radio path, and the signals include information and each signal which arrives at the receiver is delayed by a unique delay value. The receiver includes a filtering device and a distribution device to determine the strength of a part of a signal delayed by a certain propagation delay by several values of the propagation delay. The distribution device compares the delay differences of the received signals with each other and forms sums of the strengths of the signal parts determined by different values of the propagation delay. The distribution device selects values deviate at least by a predetermined delay difference whose sum of the strengths of the signal parts obtains the highest possible value. The receiver indicates the received information by using the signals selected above.

Abstract: A method controls the operation of a mobile station, the operation including camping which modellable as a number of states (S1 to 4) with predetermined state transitions (S12-S34) between them. Each one of the states corresponds to a set of locally varying features which the mobile station currently supports. The features include a first feature indicating whether the mobile station is in circuit-switched mode or packet switched mode, and a second feature indicating whether or not the mobile station is in localized service area (LSA) model. For all combinations of the first and second features there is a corresponding state (S1 to S4), and for each one of these states there are two originating state transitions and two terminating state transitions, each one of the originating state transitions corresponding to a change in the respective feature.

Abstract: The present invention relates to a method of changing a telecommunication channel in a mobile communication system for a given mobile station, which mobile station has a connection in progress, and the connection is provided with a channel on a radio connection between the mobile station and base station system and a telecommunication channel between the base station system and a mobile services switching center. In order to facilitate the changing of the telecommunication channel the method includes putting a new telecommunication channel between the mobile services switching center and the base station system, indicated by the handover message into use for the connection, and connecting the channel used to the new telecommunication channel in such a way that the radio channel remains unchanged irrespective of the change of the telecommunication channel.

Abstract: The invention concerns control of connections in cellular telecommunication systems, particularly setting up and releasing of connections. According to the invention, during setting up of a new MM connection it is checked whether an RRC connection is already active. If an RRC connection is already active, explicit signalling is used. Otherwise, RRC level events can be used to implicity control MM level events. During releasing of MM connections, it is checked if another MM protocol uses RRC connections, and if that is the case, the releasing of MM connections is signalled explicitly.

Abstract: Provided is a method and system for a radio system including at least one base station and terminal equipment including a receiver and a transmitter. The transmitter is structured and arranged to independently adjust a symbol rate of at least two signals and combine the two signals after adjusting the symbol rate. The transmitter then transmits the combined signal along one physical path. By adjusting the signal rate before combining the two signals, the transmitter optimizes the signal qualities of each of the signals.