Abstract: A mobile communication system including a subscriber exchange 130, an information providing server 150, a plurality of gateway exchanges (#0) 140, (#1) 141 and a gateway exchange selection server 170 is provided, in which transmission paths connecting the subscriber exchange 130 and the information providing server 150 via the gateway exchanges (#0) 140 and (#1) 141 are established. The gateway exchange selection server selects a gateway exchange according to the state of the transmission paths. The subscriber exchange 130 establish a path to the selected gateway exchange.

Abstract: A mobile communications network and data delivery method in a mobile communications network is provided that can implement connectionless transfer in the mobile communications network, and obviate the need for sending a call control signal for data delivery. An IP address is assigned to each of the nodes of the mobile communications network including routing nodes (a gate node and repeater node, for example) and edge nodes and to each mobile station. A routing node, receiving data including the IP address of a mobile station, carries out routing of the data in accordance with routing information. The edge node that receives the data routed by the routing node, transmits the data to the mobile station corresponding to the IP address of the mobile station added to the data. The IP addresses are also applicable to delivering data to users of the same group, or carrying out control like handover.

Abstract: In an inter-network connection system of the invention, an IP table is updated so that a physical transmission path where a fault is detected is bypassed. Therefore, after the fault occurs, a frame passing through the physical transmission path subjected to the fault is made to pass through a bypass. According as the frame arrives through the bypass, a MAC table is automatically updated such that the physical transmission path and logical channel used before the fault occurs is changed to a physical transmission path and logical channel corresponding to the bypass after the fault occurs. Alternatively, traffic measurement is performed so that a physical transmission path having a traffic amount exceeding a threshold value is bypassed.

Abstract: A mobile communication system including a subscriber exchange 130, an information providing server 150, a plurality of gateway exchanges (#0) 140, (#1) 141 and a gateway exchange selection server 170 is provided, in which transmission paths connecting the subscriber exchange 130 and the information providing server 150 via the gateway exchanges (#0) 140 and (#1) 141 are established. The gateway exchange selection server selects a gateway exchange according to the state of the transmission paths. The subscriber exchange 130 establish a path to the selected gateway exchange.