Abstract: The invention relates to a communication system which operates in the asynchronous transfer mode (ATM) and which comprises several nodes which form a network and are partly coupled to one another and to terminals, and which each comprise a switch and a control software at least for controlling the relevant coupling field and for the signaling. At least one object of the control software contains detection points in certain states. An object for event handling of the control software is provided for further processing when a detection point is reached. The object for event handling receives data via a special channel from at least one terminal or from another node.

Abstract: The invention relates to a network comprising a plurality of switches which are combined to respective sub-networks and coupled to fixed terminals or, via base stations, to mobile terminals. Each switch comprises for the connection setup from a terminal to a mobile terminal at least a table which contains an assignment of the home address of a mobile terminal to its visitor's address and to the sub-network of the switch assigned to the mobile terminal.

Abstract: A radio transmission system having a base station and a mobile station is disclosed. A controller dynamically changes in real-time the allocation of channels in response to changes in signal propagation and traffic conditions between the base and mobile stations. The allocation of channels is based on use of a Kohonen model and is determined by a space-dependent component and/or a time-dependent component. The space-dependent component is determined by signal strengths received by the base and mobile stations and the time-dependent component are determined by activity of the channels.

Abstract: The invention relates to a local area network comprising at least a ring system which includes a plurality of network nodes coupled via ring connections, which nodes are used for coupling to a station or a network node of another ring system and for switching packets generated by a station or a network node. Switching software is provided distributed over all the network nodes and stations and at least sufficient for the switching operations. The distributed switching software renders an object available for each respective application, which object is combined to a respective component of object framework software for object registration and routing the messages to and from the object. The distributed switching software in each network node and each station is represented as a distribution plane entity which is used for transmitting and controlling the messages between objects in a station or a network node and another distribution plane entity.

Abstract: A spread-spectrum based cellular mobile radio system resolves average mutual interferences (I.sup.u (j).sub.av, I.sup.d (j).sub.av) between radio zones j, j') from a total interference experienced in a radio zone (j), using statistical methods. First, interference measurements are carried out in the radio zones (Z1, Z2), and data is transmitted to a central control arrangement (CA) which resolves the average mutual interferences. Then, these average mutual interference (I.sup.u (j).sub.av, I.sup.d (j).sub.av) are used in an optimization process for acquiring access control parameters (x) for controlling traffic per radio zone (Z1, Z2). In the optimizing process various objective functions may be applied so as to fulfil system operator demands. Thus, system overload is avoided, and further, a flexible tool is provided for satisfying operator demands.

Abstract: In a cellular mobile radio network a limited number of available channels must be allocated among the various cells, and the efficiency of such allocation is highly variable with changing traffic conditions in the network. To solve this problem the invention determines all possible radio situations which may arise in the network, including the radio positions of a mobile station and occupancy of the various channels. The individual components of each possible radio situation are then compared with predetermined thresholds so as to reduce the multiplicity of such situations to a relatively small number of classified radio situations each of which has its own channel list allocated thereto. When a channel is requested for a mobile station, the relevant classified radio situation is determined and channel assignment is made from the channel list applicable to that classified situation.