Abstract: A mobile station apparatus has established a first bearer that communicates with a home network and a second bearer that communicates with a core network. In the transmission of a multicast join request, the mobile station apparatus transmits the multicast join request by selecting the first bearer if the multicast join request is addressed to the home network, or by selecting the second bearer if the multicast join request is addressed to the core network. In this way, a mobile communication system is provided where the mobile station apparatus connected to a home base station apparatus determines whether a multicast group is based on a Local IP Access and then transmits the multicast join request, and the home base station apparatus appropriately establishes a multicast session to the home network or the core network in response to a determination of the mobile station apparatus.

Abstract: Provided is a mobile communication system in which a first base station included in a first access network initiatively performs a handover from the first base station to a second base station, the second base station determines the availability of the handover for each flow, and notifies the first base station of the determination result, the first base station transmits a flow for which the handover is determined to be possible to the second base station, and the second base station transmits the transmitted flow to a mobile station. Thus, in the handover of the mobile station in which data transmission is performed between the base stations in access systems, a handover destination access system determines a communication flow to be handed over and a communication flow to be handed over, and the switching and data transmission between the access networks are performed, based on the determination result.

Abstract: A mobile node includes a plurality of transceivers, has a network conforming to network-based mobility as its home link and performs position registration to a positional managing apparatus and performs position registration to the position managing apparatus through a foreign network by position registration conforming to host-based mobility. In mobile node and position managing apparatus, a plurality of routes passing through the home link and the foreign link are established. Accordingly, when the mobile node has the plurality of transceivers, it can simultaneously connect to the home link and the foreign link through respective transceivers, to perform communication.

Abstract: A communication control method used in a relaying intermediate node at a movement source of a mobile node in a case that a handover is performed. The communication control method includes the forwarding of a user data to a relaying intermediate node at a movement destination of the mobile node wherein the user data having been received from an anchor node, and wherein the user data being addressed to the mobile node, and wherein the user data being stored in a buffer of the relaying intermediate node at the movement source of the mobile node. The communication control method also includes the continuing of the forwarding of the user data as long as the buffer has not been emptied. In addition, the communication control method includes the sending of a transfer cancel notification to the relaying intermediate node at the movement destination of the mobile node.

Abstract: Provided is a mobile communication system in which a SIPTO@LN capable LGW is selected and a PDN connection is established during a GW selection process of an MME in a PDN connection establishment procedure.

Abstract: When a connecting destination base station apparatus included in a message including an identifier of a base station apparatus serving as a connecting destination of a mobile station apparatus is different from a connecting source base station apparatus stored in an EPS bearer context, rearrangement of local PDN connection is requested to an L-PGW unit of the connecting destination base station apparatus and local PDN connection is deleted. After establishment of a wireless bearer is completed between the mobile station apparatus and the connecting destination base station apparatus, the connecting destination base station apparatus is instructed to start proxy transmission of neighbor advertisement instead of the mobile station apparatus.

Abstract: A mobile station that establishes a first transfer path by way of a first access network between the mobile station and a control station. The mobile station establishes a default EPS (Evolved Packet System) bearer by way of a second access network between the mobile station and the control station by transmitting an attach request for requesting a handover of a partial flow among the plurality of flows when performing transmission/reception of a plurality of flows with the control station by using the first transfer path.

Abstract: When performing a handover from an access network B to an access network A, a UE 10 transmits an attach request to an MME 30. MME 30 establishes a bearer on a first access network based on the attach request. UE 10 requests MME 30 to establish a specific bearer that guarantees the necessary QoS for a flow. MME 30 receives the request for establishment of a specific bearer, establishes a specific bearer that guarantee the QoS for the flow and sets up a path for performing communication of the flow between UE 10 and a PGW 20. This enables the mobile station to select a specific flow among a plurality of flows and be directly handed over to the bearer communication path when the mobile station performs a handover, thus providing a mobile communication system and the like that can realize a handover while maintaining communication quality.

Abstract: A mobile communication system and so on are provided in which an LIPA handover procedure utilizing a management table can be started by transmitting a handover request from a home base station device to which a mobile terminal device is connected, and by transmitting a response to the handover request from another home base station device. In the mobile communication system in which, in the case of handover being performed for the mobile terminal device to some other home base station device, one home base station device adaptable for the LIPA handover is determined, as a handover target, from the management table, the management table is updated such that when an address of a gateway device is contained in the handover request, the LIPA handover is enable, and when the address of the gateway device is not contained in the handover request, the LIPA handover is disable.

Abstract: UE receives a mobile operator policy including flow identification information, access system identification information, and a degree of compulsion from an ANDSF, and in a case where the degree of compulsion included in the mobile operator policy is a degree of compulsion that compels the UE to perform switching, transmits a request to forcibly switch a communication path used flow communication corresponding to the flow identification information to an access system corresponding to the access system identification information included in the mobile operator policy. As a result, by transmitting an MO policy from the ANDSF to the UE while the UE connected to a first access system is performing data communication, the UE changes a UE policy to the MO policy, thereby providing a mobile communication system or the like that is capable of avoiding concentration of traffic in the first access system.

Abstract: A first access network in which a bearer transfer path that guarantees a predetermined QoS has been established and a second access network in which a transfer path which is different from that in the first access network has been established are provided, and PCRF 60 transmits to a mobile station an uplink traffic switching request including information of a flow of which the access system type is switched, out of flows in which a UE 10 performs communication, and information of an access system type to be a switching destination of the flow, and the UE 10, upon receiving the uplink traffic switching request, switches a transfer path of the flow included in the uplink traffic switching request to that of the access system type.

Abstract: With an MBMS bearer service, information about an MBMS bearer which allocates and establishes MBMS bearer resources is included in an MBMS bearer context, with a base station device (NB) transmitting a confirmation message containing a service identifier to mobile station devices (UE) and, based on responses from the mobile station devices (UE), counting the number of mobile station devices (UE) participating in multicast data distribution. In the event that the number counted is 0, an MBMS registration deletion request for the multicast data is transmitted to an SGSN. Thus, by stipulating a control method using the counting function of the base station device to efficiently allocate network resources, a mobile communication system or the like capable of effectively using the network resources can be provided.

Abstract: To provide a mobile communication system and the like that can efficiently use network resources, by defining a control method of releasing network resources by a counting function of a base station device. In a mobile communication system that performs distribution of broadcast data by an MBMS bearer service, from a BM-SC to a mobile station device that is connected to a base station device, via a GGSN and an SGSN for which an MBMS bearer has been established, the base station device transmits a session stop request associated with the MBMS bearer context to the SGSN when stopping the distribution of broadcast data associated with a flow identifier included in an MBMS bearer context, and stops distribution of broadcast data.

Abstract: To provide a mobile communication system and the like that can efficiently use network resources, by defining a control method of releasing network resources by a counting function of a base station device. In a mobile communication system that performs distribution of broadcast data by an MBMS bearer service, from a BM-SC to a mobile station device that is connected to a base station device, via a GGSN and an SGSN for which an MBMS bearer has been established, the base station device transmits a session stop request associated with the MBMS bearer context to the SGSN when stopping the distribution of broadcast data associated with the MBMS bearer context, and stops distribution of broadcast data to thereby release the MBMS bearer resources between the base station device and the SGSN.

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 mobile station apparatus has established a first bearer that communicates with a home network and a second bearer that communicates with a core network. In the transmission of a multicast join request, the mobile station apparatus transmits the multicast join request by selecting the first bearer if the multicast join request is addressed to the home network, or by selecting the second bearer if the multicast join request is addressed to the core network. In this way, a mobile communication system is provided where the mobile station apparatus connected to a home base station apparatus determines whether a multicast group is based on a Local IP Access and then transmits the multicast join request, and the home base station apparatus appropriately establishes a multicast session to the home network or the core network in response to a determination of the mobile station apparatus.

Abstract: When a connecting destination base station apparatus included in a message including an identifier of a base station apparatus serving as a connecting destination of a mobile station apparatus is different from a connecting source base station apparatus stored in an EPS bearer context, rearrangement of local PDN connection is requested to an L-PGW unit of the connecting destination base station apparatus and local PDN connection is deleted. After establishment of a wireless bearer is completed between the mobile station apparatus and the connecting destination base station apparatus, the connecting destination base station apparatus is instructed to start proxy transmission of neighbor advertisement instead of the mobile station apparatus.

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: There are provided a communication system, a control apparatus, a router, and communication method thereof, there are capable of eliminating loss in packets during a handover and effectively releasing a resource of a router in a network base IP mobility protocol in which a mobile mode is movable without mounting a special protocol. When an MN 1 as a mobile terminal is moved, a router at a movement destination, a mobile access gateway (MAG)b 3 that has received a router solicitation from the MN 1 sends a location registration to a control apparatus, a local mobility anchor (LMA) 4, and when the LMA 4 determines as a handover, the LMA 4 instructs a router at a movement source, an MAGa 2 or an MAGb 3 to transfer a buffer from the MAGa 2 to the MAGb 3.

Abstract: There are provided a communication system, a control apparatus, a router, and communication method thereof, there are capable of eliminating loss in packets during a handover and effectively releasing a resource of a router in a network base IP mobility protocol in which a mobile mode is movable without mounting a special protocol. When an MN 1 as a mobile terminal is moved, a router at a movement destination, a mobile access gateway (MAG)b 3 that has received a router solicitation from the MN 1 sends a location registration to a control apparatus, a local mobility anchor (LMA) 4, and when the LMA 4 determines as a handover, the LMA 4 instructs a router at a movement source, an MAGa 2 or an MAGb 3 to transfer a buffer from the MAGa 2 to the MAGb 3.