Abstract: During communication by a mobile device, when a communication feasibility determining unit of an SGSN determines, based on a remaining communication volume, that the communication by the mobile device cannot be continued, an access point information extracting unit extracts APN information regarding an APN with an unused remaining communication volume and reports the extracted APN information to the mobile device. An access point information acquiring unit of the mobile device acquires APN information regarding the APN with an unused remaining communication volume. When communication is next initiated, the APN information regarding the APN with an unused remaining communication volume is transmitted to the SGSN to perform communication.

Abstract: During communication by a mobile device, when a communication feasibility determining unit of an SGSN determines, based on a remaining communication volume, that the communication by the mobile device cannot be continued, an access point information extracting unit extracts APN information regarding an APN with an unused remaining communication volume and reports the extracted APN information to the mobile device. An access point information acquiring unit of the mobile device acquires APN information regarding the APN with an unused remaining communication volume. When communication is next initiated, the APN information regarding the APN with an unused remaining communication volume is transmitted to the SGSN to perform communication.

Abstract: There is provided a communication system and a communication method of making available both a shared telephone number shared by multiple communication terminals and an individual telephone number dedicated to a user's own terminal in a single communication terminal. A shared managing unit 11 of a communication system 1 manages terminal identifiers 1 and 3 identifying each of a plurality of communication terminals 30a and 30b to which a shared telephone number is assigned in correlation with the shared telephone number. An individual managing unit 12 manages a terminal identifier 2 identifying a communication terminal 30b to which an individual telephone number is assigned is correlation with the individual telephone number. A user information managing unit 13 manages user information including base station information of communication terminals identified by the identifier every terminal identifiers 1, 2, and 3.

Abstract: A communication system includes a GGSN calculating a communication volume of a mobile terminal, and a service control device storing a charge remaining amount corresponding to a communication volume available to the mobile terminal. The service control device includes an inquiry acceptance unit accepting an inquiry for the charge remaining amount of the mobile terminal, a communication state determination unit determining whether the mobile terminal is in communication, an updated remaining amount reception unit acquiring the charge remaining amount updated in accordance with the communication volume calculated by the GGSN when the communication state determination unit determines that the mobile terminal is in communication, and a remaining amount notification unit notifying of the charge remaining amount of the mobile terminal in response to the inquiry that the inquiry acceptance unit has accepted.

Abstract: A mobile terminal measures the time from when the data communication connection was established up to the disconnection or the time from when the wireless connection was established up to the disconnection as a chargeable duration. The time in which the mobile terminal uses a network resource in a network or the time in which exchange of data was actually carried out is thus measured as the chargeable duration. Since the information relating to the chargeable duration measured in this manner is stored and displayed in the mobile terminal, it is possible for the mobile terminal to recognize the information relating to the chargeable duration without sending an inquiry to the network including a base station.

Abstract: Billing information based on a prepaid billing system is provided appropriately even when two or more communication sessions cannot be established simultaneously through a packet-switched network. A mobile communication terminal includes a packet communication unit performing mobile communication based on the prepaid billing system through the packet-switched network, an acquisition unit acquiring billing information of the mobile communication terminal from a contract information management server that manages billing information based on the prepaid billing system, through a circuit-switched network, and an output unit outputting the billing information acquired by the acquisition unit. The contract information management system includes a contract information management server including a detection unit detecting communication in the packet-switched network by the mobile communication terminal.

Abstract: A communication control system (1) includes a communication status measurement unit (32) measuring communication history data, a communication history transmitting unit (34) transmitting the communication history data with user identification information, a remaining communication amount information storage unit (52) prestoring user identification information and remaining communication amount data in association, a communication history receiving unit (53), a communication history adding unit (54) adding up the communication history data respectively corresponding to the user identification information, a communication amount comparison unit (55) comparing the remaining communication amount data with an added result, and a restriction signal transmitting unit (56) transmitting a control signal for restricting communications.

Abstract: When a request to start or a request to terminate mobile communication by a mobile communication terminal 2 or another exchange is received, a remaining communication volume update module 43 starts or stops updating a remaining communication volume information based on data communication by the mobile communication terminal 2. When a request to set or a request to reset a preservation state in the mobile communication by the mobile communication terminal 2 or another exchange is received, the remaining communication volume update module 43 stops or starts updating the remaining communication volume information based on data communication by the mobile communication terminal 2.

Abstract: During communication by a mobile device, when a communication feasibility determining unit of an SGSN determines, based on a remaining communication volume, that the communication by the mobile device cannot be continued, an access point information extracting unit extracts APN information regarding an APN with an unused remaining communication volume and reports the extracted APN information to the mobile device. An access point information acquiring unit of the mobile device acquires APN information regarding the APN with an unused remaining communication volume. When communication is next initiated, the APN information regarding the APN with an unused remaining communication volume is transmitted to the SGSN to perform communication.

Abstract: There are provided a location acquiring system that allows acquiring of location information that keeps track of the movement of a mobile communication terminal to be searched for, with the transmission and reception of signals for acquiring the location information being suppressed, and a location information acquiring method. A session establishment unit 124 of an application unit 12 in a management server 10 establishes a session between a location acquiring request terminal 20 and a to-be-searched terminal 30 for continuously transmitting the location information of the to-be-searched terminal 30 to the location acquiring request terminal 20, when an information transmission and reception unit 11 receives location information acquiring request information for making a request of acquiring location information of the to-be-searched terminal 30 from the location acquiring request terminal 20.

Abstract: A control device includes a control server and an EIR. The EIR is a database that stores an IMEI for identifying a mobile communication terminal and an MSISDN for identifying an SIM installed in the mobile communication terminal in association with each other. The control server includes a control request accepting unit accepting a request for function control on the mobile communication terminal serving as a control target, the request including the IMEI of the mobile communication terminal and the MSISDN of the SIM, a determination unit determining whether the combination of the MEI and the MSISDN included in the request for the function control is stored in the EIR, and a control signal transmission unit transmitting a control signal for performing the function control to the mobile communication terminal related to the request for the function control, depending on the determination.

Abstract: There are provided a location acquiring system that allows acquiring of location information that keeps track of the movement of a mobile communication terminal to be searched for, with the transmission and reception of signals for acquiring the location information being suppressed, and a location information acquiring method. A session establishment unit 124 of an application unit 12 in a management server 10 establishes a session between a location acquiring request terminal 20 and a to-be-searched terminal 30 for continuously transmitting the location information of the to-be-searched terminal 30 to the location acquiring request terminal 20, when an information transmission and reception unit 11 receives location information acquiring request information for making a request of acquiring location information of the to-be-searched terminal 30 from the location acquiring request terminal 20.

Abstract: There is provided a communication system and a communication method of making available both a shared telephone number shared by multiple communication terminals and an individual telephone number dedicated to a user's own terminal in a single communication terminal. A shared managing unit 11 of a communication system 1 manages terminal identifiers 1 and 3 identifying each of a plurality of communication terminals 30a and 30b to which a shared telephone number is assigned in correlation with the shared telephone number. An individual managing unit 12 manages a terminal identifier 2 identifying a communication terminal 30b to which an individual telephone number is assigned is correlation with the individual telephone number. A user information managing unit 13 manages user information including base station information of communication terminals identified by the identifier every terminal identifiers 1, 2, and 3.

Abstract: A coded signal separating apparatus, coded signal merging apparatus, coded signal separating and merging system, and methods thereof capable of performing scalable transmission of images are provided. There are provided a separating unit 1100, which is a separator separating means for separating a coded stream into a basic coded signal B having a smaller code amount than the coded stream and a plurality of extended coded signals E(m), which are used with the basic coded signal B to reconstruct an image, and a multiplexing unit 1600, which is a separator multiplexing means for optionally combining and multiplexing the basic coded signal B with the plurality of extended coded signals E(m) to generate a plurality of transmission coded signals St(1), to thereby generate and output separated streams St(1), which are multiplexed transmission coded signals.