Abstract: A network system which provides each terminal user with differentiated service, dynamically changing service profiles even in the middle of a communication session. A service control database maintains service profile definitions. When a mobile node registers with a foreign agent to initiate a conmiunication session, a service profile setting controller in the mobile node's home server sets up a service profile for the mobile user. When an event occurs within a service profile updating controller, it indicates that some control condition specified in the service profile is met. The service profile updating controller then makes access to the service control database to obtain a new service profile and the mobile node's foreign server forwards it to the foreign agent, to which the mobile node is attached. The service profile that has been established in relevant network nodes, including the home agent and foreign agent, is dynamically updated with the new one.

Abstract: Linked with a position registration procedure in a mobile IP, the invention provides a VPN setting service using an IP Sec. tunnel between optional terminals without requiring these terminals to have a specific VPN function. This service is provided by a mobile terminal, authentication servers, a VPN database, and network apparatuses. A home authentication server extracts from the VPN database the VPN information of a user who has requested the authentication at the time of making a position registration request from the mobile terminal. The home authentication server then posts the VPN information to each network apparatus using a predetermined position registration message and an authentication response message. Based on the posted VPN information, the network apparatuses set a VPN path by the IP Sec.

Abstract: The mobile network system and the service control information changing method are disclosed in which by transmitting a registration request message containing change information of service content from the mobile terminal equipment to a foreign agent apparatus, the service control information concerning the mobile terminal equipment that is possessed by each of the foreign agent apparatus, a foreign server apparatus, a home server apparatus, a home agent apparatus, and a correspondent node is updated.

Abstract: Control messages for securing a communication quality are exchanged via a dedicated connection within an ATM network when a sending terminal in an IP network delivers data to a receiving terminal in another IP network via the ATM network. A resource reservation message sent from the receiving terminal is parsed by a boundary device located at the boundary between the IP and the ATM network, and a data transfer connection is established within the ATM network based on the information of the resource reservation message.

Abstract: A first edge node accommodating a first IPv6 host holds the service information about the first IPv6 host received from an AAA server, and host address information about the first IPv6 host. A second edge node accommodating a second IPv6 host holds the host address information about the second IPv6 host. The first edge node obtains the host address information about the second IPv6 host from the second edge node when communications from the first IPv6 host to the second IPv6 host are started. The first edge node enables the service information according to the host address information about the first and second IPv6 hosts, and provides the corresponding service.

Abstract: Linked with a position registration procedure in a mobile IP, the invention provides a VPN setting service using an IP Sec. tunnel between optional terminals without requiring these terminals to have a specific VPN function. This service is provided by a mobile terminal, authentication servers, a VPN database, and network apparatuses. A home authentication server extracts from the VPN database the VPN information of a user who has requested the authentication at the time of making a position registration request from the mobile terminal. The home authentication server then posts the VPN information to each network apparatus using a predetermined position registration message and an authentication response message. Based on the posted VPN information, the network apparatuses set a VPN path by the IP Sec.

Abstract: A mobile node stores a binding update message and an AMR message in the header of an IPv6 packet, and transmits the packet to a home agent. This packet is once transferred to an AAAH. The AAAH authenticates the mobile node according to the AMR message, stores the binding update message and a service profile of the mobile node in the header of the IPv6 packet, and transmits the packet to the home agent. The home agent registers the location of the mobile node, stores the service profile in the header of the IPv6 packet, and transmits the packet to the mobile node.

Abstract: A network system which provides each terminal user with differentiated service, dynamically changing service profiles even in the middle of a communication session. A service control database maintains service profile definitions. When a mobile node registers with a foreign agent to initiate a communication session, a service profile setting controller in the mobile node's home server sets up a service profile for the mobile user. When an event occurs within a service profile updating controller, it indicates that some control condition specified in the service profile is met. The service profile updating controller then makes access to the service control database to obtain a new service profile. The mobile node's foreign server forwards it to the foreign agent, to which the mobile node is attached. The service profile that has been established in relevant network nodes, including the home agent and foreign agent, is dynamically updated with the new one.

Abstract: The mobile network system and the service control information changing method are disclosed in which by transmitting a registration request message containing change information of service content from the mobile terminal equipment to a foreign agent apparatus, the service control information concerning the mobile terminal equipment that is possessed by each of the foreign agent apparatus, a foreign server apparatus, a home server apparatus, a home agent apparatus, and a correspondent node is updated.

Abstract: Location registration information transmitted from a mobile node is notified to a home agent via a foreign agent, an AAAF, and an AAAH. Upon receipt of the location registration information, the AAAH extracts the service profile corresponding to the mobile node from a service control database, and edits the extracted profile into a format that is not dependent on a service type. The AAAH then distributes the edited service profile to the home agent and the foreign agent. The home agent and the foreign agent provide the service requested by the mobile node according to the distributed service profile.

Abstract: Providing a network communications system, which extensively supports a mobile terminal. A proxy CN being a router is arranged between a correspondent terminal (CN) and a home agent which directly corresponds to the correspondent terminal (CN). The CN accesses the proxy CN when receiving a service using the Mobile IP. The CN is authenticated by a link layer authenticating server which references a service profile DB, and makes a connection to a network. Communication with a mobile terminal (MN) being a communication partner is made via the proxy CN. In addition, a packet transmission by tunneling is performed by the proxy CN.