Abstract: An UMA network controller is dedicated for an UMA mobile network including a CS core network and a PS core network with a SGSN. The UMA network controller includes a security gateway and a control means coupled to one another. The security gateway is arranged i) to ensure security procedures between mobile stations and the UMA world, ii) to forward messages relative to the control plane for the packet switched core network between mobile stations and the control means, and iii) to forward messages relative to the user plane for the packet switched core network between mobile stations and the a serving GPRS support node. The control means is intercalated between the security gateway and the serving GPRS support node and arranged for handling the control plane for the packet switched core network.

Abstract: An UMA network controller (SGW, CM) is dedicated for an UMA mobile network comprising a CS core network (CN2) and a PS core network (CN1) with a SGSN. This UMA network controller comprises a security gateway (SGW) and a control means (CM) coupled one to the other. The security gateway (SGW) is arranged i) to ensure security procedures between mobile stations (MS) and the UMA world, ii) to forward messages relative to the control plan for the packet switched core network (CN1) between mobile stations (MS) and the control means (CM), and iii) to forward messages relative to the user plan for the packet switched core network (CN1) between mobile stations (MS) and the serving GPRS serving node (SGSN). The control means (CM) is intercalated between the security gateway (SGW) and the serving GPRS serving node (SGSN) and arranged for handling the control plan for the packet switched core network (CN1).

Abstract: The system comprises a first elongate blade and a second elongate blade. The second elongate blade is substantially in superposition with reference to the first blade. The first and the second blades are affixed together at one end. The system includes a user-actuated mechanism is connected at least to the second blade. The mechanism is selectively operable by a user of the snow-riding device to longitudinally reposition at least a portion of the second blade with reference to the first blade. This longitudinal repositioning modifies the efficient length ratio between the two blades and thereby the camber of the system. The system is self-contained and once integrated to the snow-riding device, the system permits a selective camber adjustment of at least a portion of the snow-riding device upon modifying the camber of the system.