Abstract: A method for the control of communication and a communication system, in which a terminal device communicates with the opposite end via an access network, using low-level signalling protocols, and via a core network connected to the access network, the core network using high level signalling protocols, whereby one or more core networks are connected to the access network, each core network connected to the access network being given a separate identifier and this identifier being used for routing protocol data units of a high level signalling protocol.

Abstract: The transmission of control information from a base station to at least one mobile station in the cell of a cellular radio system takes place using a first channel and a second channel. At a first moment of time, there is an indication on the first channel about the location of the piece of control information on the second channel. At a second moment of time, later than said first moment, the piece of control information is transmitted on the second channel.

Abstract: A method of determining the availability of at least one of a plurality of different services in a wireless communication network comprising at least a first station and a second station which are in communication has the following steps. The pathloss between said first station and said second station is estimated, and based on the pathloss and the requirements of at least one of said services, the power with which said first station is required to transmit to said second station is determined. The required power is compared with the maximum power with which the first station is capable of transmitting.

Abstract: In order to perform data transmission between a mobile station and a cellular radio network, the cellular radio network comprises a radio access network (104, 105, 106) for processing messages according to a first protocol, and a core network (101, 102, 103) for processing messages according to a second protocol. The mobile station deals with messages according to the first protocol on given lower protocol layers and messages according to the second protocol on a given higher protocol layer. On an adaptation layer (301) located between the higher protocol layer and the lower protocol layers, there is performed an adaptation where the messages according to the first and second protocol are mapped into each other.

Abstract: For transmitting information about the neighbouring cells to mobile stations, a base station of a cellular radio system creates a message (27, 27′) containing information about the neighbouring cells and transmits it to the mobile station. In addition to the transmission frequencies used in the neighbouring cells, the base station includes in the message other information characterizing the neighbouring cells (32a, 32b, 32c, 34). In particular, the base station includes in the message information about the quality of service offered to mobile stations by each of the neighbouring cells mentioned in the message. On the basis of the message, the mobile station makes a preliminary selection of a group of the most advantageous new cells and performs measurements among this preliminary selection in order to find a suitable new cell (41, 47). If the measurements show that there is at least one suitable new cell among the preliminary selection, the mobile station selects a new cell from this group (42).

Abstract: A method and system to determine charging information in a mobile communications system comprising one or more mobile stations and a mobile telecommunications network wherein the system collects information about the transferred amount of data in a mobile station or in the mobile telecommunications network, which collection can be made separately concerning the transmitted and/or the received data and along with information about the call duration determined in a mobile station. The collection may also include the bearer type and the symmetry of the connection. The transferred data is classified, and the charging information is stored relating to each call or to each class. The information can be displayed to the user on the display of the mobile station.

Abstract: Cellular radio system base stations (10, 12) offer various service levels and transmit control messages (14) indicating said service levels. Terminals (20) store information (22) about previous connections and, based on that information or on their own capability, produce a prediction on the service level required by the next connection. A terminal selects a cell such that the service level in the cell matches the terminal's prediction on the service level required.

Abstract: A mobile terminal (10) has multiple alternative protocol stacks (151, 152 . . .) which correspond to the protocols used on multiple backbone networks (30a-30c) to which the mobile terminal can obtain access through one or more radio access networks (20a-20c) with which it is in communication using a common, predetermined low level signalling protocol. The radio access network (20) broadcasts signals (102) indicating the types of backbone network to which it is connected (and thereby the protocols they employ), and on encountering a signal indicating a new type of backbone network, a mobile terminal 10 may download a new protocol stack from the radio access network.