Abstract: A photonics-electronics convergence switch with which, even if an optical network system is built by combining a plurality of packet switches, the amount of processing in the packet switches does not increase, the optical network system operates with low electric power consumption, and this enables wide-range optical communication between the nodes of a communication origin and of a communication partner, includes a network processor that is an electronic circuit configured to control the functions of the packet switch, a plurality of optical transmitter-receivers having photoelectric conversion functions, and a plurality of optical switches.

Abstract: In a mobile communication system, a service area is constituted of a plurality of cells each disposing a base station, and offers a multicast service to a mobile station apparatus in the service area, by transmitting multicast data to the base stations in the service area when a session initiation request includes a dynamic service area constitution identifier. A cell disposed a base station apparatus in which the mobile station apparatus exists as well as cells surrounding the concerned cell is determined as a dynamic service area and a session start request is transmitted to the base stations included in the service area. As a result, multicast data will be delivered to the base stations around which a mobile terminal exists, thus providing a mobile communication system which can perform efficient communication without using waste resources.

Abstract: A smooth and seamless terminal switching guaranteeing continuity of communication at an application level is realized. A call control part for setting and managing a physical and logical transmission path between communication terminals, a session management part for managing establishment of data communication between the communication terminals, and a switching request processing unit for controlling interruption and resumption of a session are provided, wherein the switching request processing unit exercises a function to temporarily interrupt a session after receiving a session switching request signal from a communication terminal, a function to instruct the call control part to establish a call connection with a switch destination communication terminal, a function to establish a session with an application on the switch destination communication terminal, and a function to resume, after establishing the session, a session with a communication terminal of an opposite side.

Abstract: In a mobile communication system, in which a service area is constituted of a plurality of cells each disposing a base station, and which offers a multicast service to a mobile station apparatus existing in the service area, by transmitting multicast data from a multicast service delivering apparatus to the base stations in the service area, when a session initiation request received from the multicast service delivering apparatus includes a dynamic service area constitution identifier, a cell disposing a base station apparatus in which the mobile station apparatus exists is determined as a dynamic service area and a session start request is transmitted to the base station included in the service area. As a result, multicast data will be delivered limitedly to the base stations under which a mobile terminal exists, whereby it is possible to provide a mobile communication system which can perform efficient communication without using waste resources.

Abstract: To guarantee continuation of communications of the level of the applications, and implement smooth and seamless switching between communication terminals that execute the service.

Abstract: A core network includes an external network reception section which receives data from an external network, a connection instruction processing section which transmits a paging request directed to user equipment upon receipt of the data and also transmits a connection instruction of a second radio communication type, a connection management section which registers a connection by the second radio communication type upon receipt of a connection request, and a transmission section which transmits the data.

Abstract: Object To guarantee continuation of communications of the level of the applications, and implement smooth and seamless switching between communication terminals that execute the service.

Abstract: A session control method for a mobile communication system including a session control device for executing the control of sessions according to instructions from an application server, includes managing a group of plurality of communication terminals owned by same user and types of sessions processable by each of the communication terminals constituting the group. When a session establishment request is executed to any one of the plurality of communication terminals constituting the group, any one from the plurality of communication terminals comprising the group may be selected depending on type of session requested to be established, and the session connection to the selected communication terminal is executed. The constitution of the communication terminals of the group can be changed according to request from the communication terminals. The types of sessions processable by each of the communication terminals constituting the group can be changed according to request from the communication terminals.

Abstract: It is possible to transfer a call or session establishment request specifying one of the communication terminals in a mobile communication network to an optimal communication terminal in the group. A communication control device (4) includes: session control portion (4a) which controls session connection between communication terminals (102 to 106) and a counterpart communication terminal (108); and communication terminal group information managing portion (4c) which correlates identification information of the communication terminals (102 to 106) so as to manage the respective communication terminals (102 to 106) as a group (101) when they are connected to a mobile communication network (2) and creates a condition of a service which can be applied to the communication terminals in the group (101).

Abstract: A smooth and seamless terminal switching guaranteeing continuity of communication at an application level is realized. A call control means for setting and managing a physical and logical transmission path between communication terminals, a session management means for managing establishment of data communication between the communication terminals, and a switching request processing means for controlling interruption and resumption of a session are provided, wherein the switching request processing means exercises a function to temporarily interrupt a session after receiving a session switching request signal from a communication terminal, a function to instruct the call control means to establish a call connection with a communication terminal of switch destination, a function to establish a session with an application on the communication terminal of switch destination, and a function to resume, after establishing the session, a session with a communication terminal of an opposite side.

Abstract: By adding a public identifier for designating a PAN configured by a communication terminal owned by a user to subscriber information managed in a mobile communication network, it is possible to manage a plurality of communication terminals as a group. The mobile communication network 2 includes a communication control device 4 for managing subscriber information and performing communication control. A communication terminal #1 on which USIM 8 is mounted is connected to communication terminals #2 and #3 constituting PAN 7 together with the communication terminal #1.