Abstract: The application discloses methods and corresponding systems and network devices and/or nodes for enabling user equipment belonging to a home network to access data communication services in a visited network of a wireless communication system. By way of example, there is provided a method that comprises the step of obtaining at least one cryptographic token originating from a network node of the home network of the user equipment and cryptographically signed by a private key associated with the home network, wherein the at least one cryptographic token represents means for accessing data communication services via user data transport functions of the visited network.

Abstract: The invention relates to a voltage source converter system, and includes a plane parallel bus bar assembly having conductor bars closely related for reducing induced voltage in the assembly. Each gap that is formed between adjacent conductor bars is completely filled by a polymer insulator which is formed for providing complete freedom of access to fully exposed external sides of the bus bar assembly. The invention also relates to a molded, single piece polymer insulator including an elongate rib member of continuous height and thickness, and elongate wing members angularly extended from each longitudinal periphery of the rib member.

Abstract: The invention relates to a voltage source converter system, comprising a plane parallel bus bar assembly having conductor bars (4, 5, 6) closely related for reducing induced voltage in the assembly. Each gap that is formed between adjacent conductor bars is completely filled by a polymer insulator (8, 9) which is formed for providing complete freedom of access to fully exposed external sides of said bus bar assembly. The invention also relates to a molded, single piece polymer insulator comprising an elongate rib member (10) of continuous height and thickness, and elongate wing members (11, 12) angularly extended from each longitudinal periphery of the rib member.

Abstract: A device for simulating in real-time a path of an object in a three-dimensional coordinate system. The device includes at least a first unit and a second unit each provided with a GPS receiver for receiving position and timing signals respectively from at least four GPS satellites, a transmitter/receiver for communication between the first unit and the second unit in the VHF or UHF frequencies, and a communication computer having memory capacity and providing a connection between the GPS receiver and the transmitter/receiver. A simulation computer is included at least with the first unit. The simulation computer communicates with the communication computer and simulates with an event driven protocol a path in the coordinate system of the object and communicating the path to the second unit. The communication computer controls the communication through the transmitter/receiver according to an STDMA method.

Abstract: A platform for carrying electric high-voltage equipment, such as series-capacitors etc., is supported by insulator columns which are articulated at the upper and lower ends. Bracing takes place with the aid of diagonally-braced insulators which are connected together by means of ropes via a prestressed spring damper. The means provides a high damping and a low natural frequency in case of earthquake stresses. Through the prestressing of the spring damper, the platform will remain stationary at low loads such as wind loads.