Abstract: A billing system is disclosed which performs processing in order to provide service to user terminals, and which performs billing for the service provided to the user terminals. In this billing system, user billing profiles UBP are stored in a user billing profile registration unit, by service type and in user terminal units; a billing condition generation unit within a service provider server compares the user billing profile UBP corresponding to a specified service type and to a user terminal with a server billing profile SBP to generate billing conditions, and a billing condition setting unit of a foreign agent sets the billing conditions in a billing unit; and based on the billing conditions thus set, the billing unit executes billing processing for each user terminal.

Abstract: The present invention concerns a mobile packet communication system that supports data communications, including Internet communications, in a high-speed mobile communication system such as a cellular communication network, and integrates a mobile network and a fixed network on a common platform while providing the capability to select an optimum route.

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: A computer-readable recording medium recording a program capable of accurately analyzing the cause of a performance fault at the very end point of a client system, server system, etc. Outgoing and incoming packets are captured during execution of a communication application to measure a round trip time, and a communication window size of the transmitting source is estimated based on the captured incoming packets. A throughput estimate is calculated from the round trip time and the communication window size, and the estimated value and actual measured value of the throughput are displayed on, for example, a display, together with various other communication parameters including the communication window size and the round trip time, whereby the cause of a performance fault can be accurately located by quantitative analysis.

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 computer-readable recording medium recording a program capable of accurately analyzing the cause of a performance fault at the very end point of a client system, server system, etc. Outgoing and incoming packets are captured during execution of a communication application to measure a round trip time, and a communication window size of the transmitting source is estimated based on the captured incoming packets. A throughput estimate is calculated from the round trip time and the communication window size, and the estimated value and actual measured value of the throughput are displayed on, for example, a display, together with various other communication parameters including the communication window size and the round trip time, whereby the cause of a performance fault can be accurately located by quantitative analysis.

Abstract: A linkage information management server includes a linkage information storage unit storing linkage information relating a first identifier for identifying a first device to a second identifier for uniquely identifying a second device, a registration unit registering the received first identifier and the second identifier as linkage information in the linkage information storage unit, and a location information storage unit storing a first address which is an invariable address assigned for the second device, a second address which is a variable address assigned for the second device, and the second identifier after associating with them.

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: The present invention concerns a mobile packet communication system that supports data communications, including Internet communications, in a high-speed mobile communication system such as a cellular communication network, and integrates a mobile network and a fixed network on a common platform while providing the capability to select an optimum route.

Abstract: The present invention concerns a mobile packet communication system that supports data communications, including Internet communications, in a high-speed mobile communication system such as a cellular communication network, and integrates a mobile network and a fixed network on a common platform while providing the capability to select an optimum route.

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: A billing system is disclosed which performs processing in order to provide service to user terminals, and which performs billing for the service provided to the user terminals. In this billing system, user billing profiles UBP are stored in a user billing profile registration unit, by service type and in user terminal units; a billing condition generation unit within a service provider server compares the user billing profile UBP corresponding to a specified service type and to a user terminal with a server billing profile SBP to generate billing conditions, and a billing condition setting unit of a foreign agent sets the billing conditions in a billing unit; and based on the billing conditions thus set, the billing unit executes billing processing for each user terminal.

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.

Abstract: A data management system that allows client terminals on a network to register records with search keywords to distributed data management servers and to retrieve them by entering a specific search keyword. The entire coverage area of the network is divided into a plurality of primary areas, and each primary area is further subdivided into a plurality of secondary areas. Primary and secondary servers are deployed over the network, one for each individual primary area and secondary area, respectively. The primary servers employ a primary hash function that processes a given search keyword to derive a primary server identifier indicating one of the primary servers that governs a particular primary area where the secondary server having a record relevant to the given search keyword is located.

Abstract: A navigation apparatus for displaying a service selection menu on a user terminal so as to navigate a user at the time of selection of a service provider. A traffic obtaining portion obtains band used by each circuit accommodating each service provider from a network controller, and a menu optimizing portion creates a service selection menu which reflects the band used by each circuit accommodating each service provider and displays the menu on a user terminal. When a user selects a predetermined service provider from the service selection menu, a service executing means judges whether or not the user terminal can be connected to the selected service provider, and if connectable, requests a path setting portion to set a path between the user terminal and the selected service provider. The path setting portion connects the user terminal to the selected service provider by an exchange.