Abstract: A communication apparatus and method for channel switching for ad-hoc communication provides effective utilization of an infrastructure communication channel while preventing a deterioration in the quality of the infrastructure communication affected by a transmission signal used in the ad-hoc communication. Typically, the number of channels that can be used for a second communication is increased.

Abstract: A transmission system, having a plurality of delivery server side routers which communicate with a plurality of delivery servers for delivering a content; and a client side router which communicates with a client device for receiving the content, is configured to include: a database for storing server load states of the plurality of delivery servers, and respective individual link load states for a plurality of delivery paths between the plurality of delivery server side routers and the client side router; and a path control unit for determining a minimum load state delivery path having a minimum load state among the plurality of delivery paths, based on sums of the server load states and the respective individual link load states stored in the database.

Abstract: Included are a network information database for storing the statistical information collected from a router, a user request processing unit for accepting and processing a flow forwarding request from a user terminal connected to the network, a route control unit for searching for a route corresponding to the request from the user terminal by referring to the network information database, a load sharing control unit for executing such a load sharing process as to generate router setting information for sharing a transmission load of the network by referring to the network information database, and a router control unit for setting a router based on the route information determined by the route control unit and on the router setting information generated by the load sharing control unit.

Abstract: The present invention provides a mobile communications apparatus, which optimizes handover timing and avoids communications interruptions with a base station. A handover timing calculating function 23, which computes a handover timing, is provided in either a mobile station 10 or base station A (20-A) or B (20-B). The handover timing calculating function 23 sets handover timing from a handover point “G”, which has reception power as a reference, to a point in time “H”, which moves up the required boot-up time for an application that the mobile station 10 is at least currently using.

Abstract: A communication apparatus and method for channel switching for ad-hoc communication provides effective utilization of an infrastructure communication channel while preventing a deterioration in the quality of the infrastructure communication affected by a transmission signal used in the ad-hoc communication. Typically, the number of channels that can be used for a second communication is increased.

Abstract: A mobile station includes a wireless unit that sets a first resource that is used to directly communicate with another mobile station and a second resource that allows the mobile station to communicate with a wireless base station, the first resource and the second resource being set on the basis of resource information concerning the first resource and the second resource.

Abstract: To effectively utilize an infrastructure communication channel and increase a number of channels available for ad-hoc communication in a mobile communication apparatus enabling communication in an infrastructure communication mode for radio communication via a base station and in an ad-hoc communication mode for direct radio communication with another mobile communication apparatus, by providing a communication channel recognizer to recognize an infrastructure communication channel which does not interfere with an infrastructure communication within a radio service area of a base station, from among the infrastructure communication channels assigned for the infrastructure communication and a communication channel diverter to control utilizing a infrastructure communication channel, recognized by the communication channel recognizer, as a channel for the ad-hoc communication mode.

Abstract: A mobile radio system for radio communications between a base station and a plurality of mobile stations, as well as among a plurality of mobile stations, including a mobile radio channel assignment method, where each mobile station is capable of acquiring position information of the current position of the mobile station, as well as assigning a frequency channel for radio communications. The mobile station transmits and receives information using the assigned frequency channel, corresponding to the acquired position information.

Abstract: To reduce the processing load such as channel assignment and an authentication process in a plurality of radio base stations and communication terminals, and quickly and efficiently assign channels to the communication channels. The channel assigning method by a radio base station group, includes determining assignment of a communication channel between a communication terminal entering a radio area of the radio station group and all radio base stations within the radio station group by a base station in the radio base station group. Channel assigning information common to the radio base station group is updated as to the determined communication channel and a communication channel is assigned to the communication terminal with reference to the channel assigning information by each radio base station in the radio base station group other than the radio base station.

Abstract: An IP packet relay apparatus provided between networks to relay an IP packet relating to a host belonging to a specific group, comprising: a list in which an IP address possessed by a host is associated with a group identifier for identifying a group to which the host belongs; a judgment unit judging whether an IP packet that has received from one network and is addressed to a host connected to another network is an IP packet relating to the same group or not with reference to the list; and a forwarding unit relaying an IP packet judged to be the IP packet relating to the same group.

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: A transmission system, having a plurality of delivery server side routers which communicate with a plurality of delivery servers for delivering a content; and a client side router which communicates with a client device for receiving the content, is configured to include: a database for storing server load states of the plurality of delivery servers, and respective individual link load states for a plurality of delivery paths between the plurality of delivery server side routers and the client side router; and a path control unit for determining a minimum load state delivery path having a minimum load state among the plurality of delivery paths, based on sums of the server load states and the respective individual link load states stored in the database.

Abstract: Included are a network information database for storing the statistical information collected from a router, a user request processing unit for accepting and processing a flow forwarding request from a user terminal connected to the network, a route control unit for searching for a route corresponding to the request from the user terminal by referring to the network information database, a load sharing control unit for executing such a load sharing process as to generate router setting information for sharing a transmission load of the network by referring to the network information database, and a router control unit for setting a router based on the route information determined by the route control unit and on the router setting information generated by the load sharing control unit.

Abstract: A system for collecting marketing information enables manufacturers to efficiently gather marketing information and provide incentives to customers for the information. A retail store writes read-permission information in information storage media of a product at the time of checkout (step S2). A customer reads product identification information from the information storage media of a purchased product on condition that the information storage media stores the read-permission information (step S3). The customer transmits the product identification information and his/her customer information from a customer terminal (step S4). A manufacturer server receives the product identification information and the customer information from the customer terminal (step S5) and stores them in a relational structure, and also manages the provision status of incentives offered to the customer providing the information.

Abstract: A wireless tag 1 carried by a user sends a user ID stored in an internal memory to a terminal 21 with wireless signals. The terminal 21 sends the user ID from the wireless tag 1 to a messaging server 3. The messaging server 3 relates the user ID with the content (acquired from a content server 4) desired by the user of the user ID, stores them and delivers to the terminal 21 the content corresponding to the user ID from the terminal 21. The terminal 21 outputs the delivered contents to a display unit and so on. The wireless tag 1 moves depending on the movement of the user, the user ID is sent to the messaging server 3 from a terminal 2i where the user has moved, and the content is delivered to the terminal 2i. In this way, the user can receive the delivery of the content with the terminal where the user has moved.

Abstract: A portable card type data storage device with a large capacity and low power consumption is provided which enalbes two storage mediums with different features to be installed into a single slot of an information processing device. The card type data storage device 100 of the invention includes a case 10 having a connection slot 10a, a first connector 11 adapted to be inserted into and connected with a connection slot 201 of an information processing device such as a PC 200, a hard disk 13 housed in the case 10, a second connector 12 for connection with a semiconductor memory 18 inserted into the connection slot 10a, and a storage device control section 20.

Abstract: The present invention relates to a mobile communication system. Particularly, the present invention provides a mobile communication system that has functions of autonomously relieving and recovering from a station-location-information loss phenomenon which may be caused when the system performs switching between active and standby home location registers in response to an occurrence of a fault. This mobile communication system has home location registers, visitor location registers, mobile switching centers, and mobile stations. In this mobile communication system, each of the home location register comprises a rerouting information acquisition section for performing routing information acquisition processing when receiving in response to a routing information acquisition message, which is sent out to one of the visitor location registers a response message indicating that a corresponding one of the mobile stations is not present.

Abstract: A mobile communication system employs narrow paging areas for calling mobile stations without increasing location registration requests to a location management center. This system reduces useless calls and improves the efficiency of use of radio resources. Each local area (1-3) of the system is divided into narrow paging areas (1-4). A storage unit (2-1) is installed in each base station (1-5) or exchange station (1-2), to register mobile stations (1-6). When a base station receives a location registration request from a mobile station, the base station registers the mobile station in the storage unit, and if necessary, transmits a location registration request to the location management center.

Abstract: A portable card type data storage device with a large capacity and low power consumption is provided which enalbes two storage mediums with different features to be installed into a single slot of an information processing device. The card type data storage device 100 of the invention includes a case 10 having a connection slot 10a, a first connector 11 adapted to be inserted into and connected with a connection slot 201 of an information processing device such as a PC 200, a hard disk 13 housed in the case 10, a second connector 12 for connection with a semiconductor memory 18 inserted into the connection slot 10a, and a storage device control section 20.

Abstract: A mobile communication system employs narrow paging areas for calling mobile stations without increasing location registration requests to a location management center. This system reduces useless calls and improves the efficiency of use of radio resources. Each local area (1-3) of the system is divided into narrow paging areas (1-4). A storage unit (2-1) is installed in each base station (1-5) or exchange station (1-2), to register mobile stations (1-6). When a base station receives a location registration request from a mobile station, the base station registers the mobile station in the storage unit, and if necessary, transmits a location registration request to the location management center.