Abstract: A communication method executed by a terminal device included in a plurality of terminal devices, the communication method comprising obtain first identification information used in a group including the plurality of terminal devices and state information, the first identification information being used for device identification in communication between a base station and each of the plurality of terminal devices, the state information indicating whether the first identification information is allocated to the terminal device or not, and when it is determined that the first identification information is not allocated to the terminal device based on the state information, requesting a usage right of the first identification information for the plurality of terminal devices in response to obtaining data to be transmitted to the base station, and transmitting the data to the base station using the first identification information after obtaining the usage right.

Abstract: A CA allocation determination unit determines allocation of each of first data to be sent by using a first frequency band and second data to be sent by using a second frequency band that are included in transmission data and notifies of information on the first data. An RB allocation determination unit allocates radio resources to the first data and the second data and notifies information on the radio resource allocated to the first data. A first data processing unit sends, by using the allocated radio resources, the first data and the second data to a radio terminal device. A second data management unit selects the first data from the transmission data by using the information on the first data. A second data processing unit sends, by using the radio resource allocated to the first data notified, the first data selected to the radio terminal device.

Abstract: A base station controller that manages a plurality of cells includes a receiving part configured to receive, from another base station controller that manages a cell sharing a communication area with each of the plurality of cells, identification information of a cell group to which a cell formed by a base station of connection destination candidate of a mobile station connected to a base station under control of the another base station controller belongs, and a control part configured to exercise control to transmit a message requesting connection to the mobile station to each base station forming the cells contained in the cell group.

Abstract: A mobile communication system has a plurality of nodes, hierarchically connected to each other, including a source base station and a target base station. A U-plane management station includes detecting unit detecting a handover for the mobile terminal, and a Bi-casting unit redundantly transmitting, when detecting the handover for the mobile terminal, the same user data addressed to the mobile terminal toward both of the source base station and the target base station. The target base station includes a retaining unit receiving the user data addressed to the mobile terminal, which is transmitted by the U-plane management station, and retaining the user data, and a wireless transmitting unit wirelessly transmitting, when the mobile terminal is wirelessly connected after moving, the user data requested by the mobile terminal in the user data retained by the retaining unit and addressed to the mobile terminal.

Abstract: A plurality of base transceiver stations and at least one extension device are connected, via an IP network that uses internet protocol. The extension device shares resources of the base transceiver stations by arbitrary changing a connection relationship between the base transceiver stations and the extension devices. When a mobile terminal communicates with a core network, the extension device uses the resources of at least one base transceiver stations according to fluctuation in the amount of traffic.

Abstract: In a radio network control device, if TMSI included in a connection request is not stored in a subscriber-information storage unit, IMSI corresponding to the TMSI is acquired from a higher-level device and access control is performed for radio communications between a mobile terminal and a base station.

Abstract: A mobile communications network is a communications network that performs both circuit switching and packet switching. A data communications network is a communications network that performs packet switching. A communication apparatus is capable of connecting to the mobile communications network and the data communications network. The communication apparatus includes a communication control unit which obtains access from a mobile station to the mobile communications network, terminates the access whose call type is packet-switched call, and replaces that access with access to the data communications network.

Abstract: In a network system including a radio base station to be accommodated in a mobile telephone network through an IP network, the radio base station, when receiving a calling request from a calling terminal, specifies a called terminal of the calling request. If the called terminal can receive the calling request by using another radio base station different from the base station connected to the IP network, it is tried to establish a data communication line, in which the radio base station and the another radio base station are connected through the IP network not by way of the mobile telephone network, so as to exchange the communication data between the calling terminal and the called terminal.

Abstract: A communication server communicates with a radio base station that is capable of being connected to a fixed line by a user. A receiving unit receives station identification information identifying the radio base station and line identification information identifying a fixed line to which the radio base station is connected. An acquiring unit acquires authentication information indicating preliminarily set correlations between the station identification information and the line identification information. A determining unit determines whether a correlation between the station identification information and the line identification information received by the receiving unit coincides with a correlation indicated in the authentication information acquired by the acquiring unit. A determination result output unit outputs a determination result of the determining unit.

Abstract: In a network system including base stations accommodated in a mobile phone network through an IP network, when a mobile phone terminal as a calling terminal makes a calling request and the calling request from the calling terminal is sent through a source base station to the mobile phone network and then from the mobile phone network through a destination base station to a mobile phone terminal as a called terminal, it is judged whether the source base station and the destination base station are both connected to the mobile phone network through the same IP network, and when the source base station and the destination base station are both connected to the mobile phone network through the same IP network, a data transmission path is established between the calling terminal and the called terminal that directly connects the source base station and the destination base station through the same IP network and without via the mobile phone network.

Abstract: When a terminal enters a cell of a personal-use base station (NBTS) arranged in a certain location area, the terminal receives a location area identifier having a number that is different from an identifier of the location area, and transmits a location updating request with the reception of the location area identifier as a trigger. On receiving the location updating request, a VLR or an NRNC having a registration table, in which the ID of the personal-use base station and the ID of a terminal allowed to use the personal-use base station are registered, judges whether the terminal issued the location updating request is the terminal allowed to use the personal-use base station by referring to the registration table.

Abstract: A base station controller that manages a plurality of cells includes a receiving part configured to receive, from another base station controller that manages a cell sharing a communication area with each of the plurality of cells, identification information of a cell group to which a cell formed by a base station of connection destination candidate of a mobile station connected to a base station under control of the another base station controller belongs, and a control part configured to exercise control to transmit a message requesting connection to the mobile station to each base station forming the cells contained in the cell group.

Abstract: A call connection processing method that uses SIP (Signal Invitation Protocol) to perform call connection between user terminals and a backbone network via an access network is disclosed. In the method the user terminal instructs a proxy apparatus in the access network to send specified SIP signaling messages to the backbone network in place of the user terminal; by following that instruction, the proxy apparatus does not send a certain SIP message of the SIP signaling messages to the user terminal, or sends another SIP messages to the backbone network in place of the user terminal.

Abstract: A mobile communication system has a plurality of nodes, hierarchically connected to each other, including a source base station and a target base station. A U-plane management station includes detecting unit detecting a handover for the mobile terminal, and a Bi-casting unit redundantly transmitting, when detecting the handover for the mobile terminal, the same user data addressed to the mobile terminal toward both of the source base station and the target base station. The target base station includes a retaining unit receiving the user data addressed to the mobile terminal, which is transmitted by the U-plane management station, and retaining the user data, and a wireless transmitting unit wirelessly transmitting, when the mobile terminal is wirelessly connected after moving, the user data requested by the mobile terminal in the user data retained by the retaining unit and addressed to the mobile terminal.

Abstract: When a terminal enters a cell of a personal-use base station (NBTS) arranged in a certain location area, the terminal receives a location area identifier having a number that is different from an identifier of the location area, and transmits a location updating request with the reception of the location area identifier as a trigger. On receiving the location updating request, a VLR or an NRNC having a registration table, in which the ID of the personal-use base station and the ID of a terminal allowed to use the personal-use base station are registered, judges whether the terminal issued the location updating request is the terminal allowed to use the personal-use base station by referring to the registration table.

Abstract: A system according to this invention executes congestion control for monitoring a packet flow which passes through a relay router in a VoIP network and in which a packet is transferred with a predetermined priority, and for, when congestion is generated by generation of a new packet flow, maintaining a transfer state of a packet of a packet flow established before the new packet flow is generated and transferred with the predetermined priority.

Abstract: A plurality of base transceiver stations and at least one extension device are connected, via an IP network that uses internet protocol. The extension device shares resources of the base transceiver stations by arbitrary changing a connection relationship between the base transceiver stations and the extension devices. When a mobile terminal communicates with a core network, the extension device uses the resources of at least one base transceiver stations according to fluctuation in the amount of traffic.

Abstract: In a network system including a radio base station to be accommodated in a mobile telephone network through an IP network, the radio base station, when receiving a calling request from a calling terminal, specifies a called terminal of the calling request. If the called terminal can receive the calling request by using another radio base station different from the base station connected to the IP network, it is tried to establish a data communication line, in which the radio base station and the another radio base station are connected through the IP network not by way of the mobile telephone network, so as to exchange the communication data between the calling terminal and the called terminal.

Abstract: In a network system including base stations accommodated in a mobile phone network through an IP network, when a mobile phone terminal as a calling terminal makes a calling request and the calling request from the calling terminal is sent through a source base station to the mobile phone network and then from the mobile phone network through a destination base station to a mobile phone terminal as a called terminal, it is judged whether the source base station and the destination base station are both connected to the mobile phone network through the same IP network, and when the source base station and the destination base station are both connected to the mobile phone network through the same IP network, a data transmission path is established between the calling terminal and the called terminal that directly connects the source base station and the destination base station through the same IP network and without via the mobile phone network.

Abstract: A bandwidth control apparatus in an IP network such as the Internet eliminates a packet discard for each user, and equally assigns bandwidths to the user. A bandwidth measuring portion measures a total bandwidth of a single or a plurality of TCP sessions for each user, and a window size changing portion reduces a window size of a TCP session ACK packet of a user whose total bandwidth value exceeds a maximum bandwidth preset. Alternatively, an ACK time changing portion delays a TCP session ACK packet of a user whose total bandwidth exceeds the maximum bandwidth value preset.