Abstract: A controller in a mobile communication system includes a management unit (151) configured to manage a resource usage condition in the mobile communication system and a determination unit (152) configured to determine to which an idle state or a power saving state different from the idle state a user equipment (10) is to transition after completion of communication of a data signal depending on the resource usage condition, and the state determined by the determination unit (152) is indicated to the user equipment (10).

Abstract: A communication device includes a receiving unit configured to receive an instruction signal, which instructs the keeping of records regarding specific broadcast information, from a transmission source of the specific broadcast information, a storing unit configured to retain the records regarding the specific broadcast information in the case where the receiving unit receives the specific broadcast information broadcast from the transmission source, and a transmission unit configured to transmit to the transmission source a notification signal indicating that the records regarding the specific broadcast information are retained, wherein in the case where the receiving unit receives a request signal sent from the transmission source in response to the notification signal, the transmission unit transmits to the transmission source a reporting signal including at least an identifier identifying the specific broadcast information.

Abstract: A base station includes a system information creating unit that creates first system information for barring communication and second system information for not barring; a timing determination unit that classifies user equipment into groups based on timings of the user equipment being in an idle mode to be activated in every discontinuous reception period, and that determines, for each of the groups, a timing of transmitting a paging signal; and a transmitter that transmits the paging signal to the user equipment of some of the groups, and subsequently the first system information; that switches transmission of the first and second system information, so that a ratio between a number of transmitting the first system information and that of the second system information corresponds to a barring ratio; and that transmits the paging signal to the user equipment of the some of the groups, and subsequently the second system information.

Abstract: An objective is to avoid a situation where a mobile station UE, which is not a CSG member, uses a CSG cell as an Scell in CSG control. A radio base station eNB according to the invention includes a management unit 12 configured to manage at least one of a Pcell list and an Scell list, a reception unit 11 configured to acquire at least one of Pcell member information and Scell member information from a mobile station UE in a cell #10, and a control unit 13 configured to determine whether or not the mobile station UE can connect to the cell #10 as a Pcell and determine whether or not the mobile station UE can configure the cell #10 as an Scell by referring to the management unit 12 based on at least one of the Pcell member information and the Scell member information.

Abstract: A mobile communication method includes: a step of transmitting, by a radio base station eNB#3, “Forwarding Request” on downlink user data addressed to a mobile station UE to a radio base station eNB#1; a step of switching, in response to the “Forwarding Request”, by the radio base station eNB#1, a forwarding destination of the downlink user data addressed to the mobile station UE from the radio base station eNB#2 to the radio base station eNB#3; and a step of transmitting, by the radio base station eNB#3, the downlink user data addressed to the mobile station UE to the mobile station UE.

Abstract: A communication device includes a network side communication unit that receives emergency information from an information broadcasting node; and a UE side communication unit that communicates a communication signal with user equipment (UE) through a radio base station. The UE side communication unit broadcasts a Secondary Notification signal including the emergency information, subsequent to broadcasting a Primary Notification signal providing notice of broadcasting of the emergency information, and individually transmitting a command signal for transition of an RRC protocol state or switching to another cell to the UE. The transition of the RRC protocol state is from a state where reception of the emergency information is disabled to a state where reception of the emergency information is enabled, and the other cell is such that the UE can receive the Secondary Notification signal, irrespective of the RRC protocol state of the UE.

Abstract: A signal load onto a mobility management node MME is reduced by defining a case which does not require “Path Switch” when X2 handover processing is performed for a mobile station UE. A radio base station eNB#1 according to the present invention includes a handover processing unit 14 configured not to perform “Path Switch” when performing X2 handover processing for a mobile station to a radio base station eNB#2 having the same “Virtual eNB ID#1” as the radio base station eNB#1.

Abstract: The present invention enables broadcasting of additional information in addition to emergency information without greatly improving a data management and processing capability in an information broadcasting node CBE or a core network apparatus. A radio access network apparatus according to the present invention includes a management unit (11) configured to manage a cell, a type of emergency information, and additional information in association with one another, and a transmission unit (13) configured to broadcast emergency information and additional information in a cell under control thereof when receiving an instruction to broadcast the emergency information, the additional information being associated with the cell and the type of the emergency information.

Abstract: A mobile station, a networking apparatus, and a mobile communication method with which access restriction according to SSAC can be achieved with greater reliability even when the mobile station is in an RRC CONNECTED state. A UE 100 acquires restriction information indicating a content of Service Specific Access Control, and cancels transmission of a call-origination request based on the acquired restriction information if the call-origination request is generated when the UE 100 is in an RRC CONNECTED state in which connection to an access network is established on a radio resource control layer, the transmission being cancelled in the RRC CONNECTED state.

Abstract: A system for enabling broadcasting of broadcast information to a mobile station UE camping on a phantom cell is disclosed. A mobile communication system transmits reference instruction information to a mobile station UE camping on or communicating in any of phantom cells #1 to #13, the reference instruction information instructing the mobile station UE to refer to broadcast information in a macro cell #A which the mobile station UE does not camp on or is not communicating in.

Abstract: A base station includes a voice coding method identification unit configured to identify whether a CSFB method in which a voice signal of user equipment is provided in a 3G cell or a VoLTE method in which a voice signal of the user equipment is provided in an LTE cell is used; a mode manager configured to control an operation mode of the user equipment, so that the user equipment that provides the voice signal by the VoLTE method tends to stay in the active mode compared to the user equipment that provides the voice signal by the CSFB method; and a transmitter configured to transmit a notification signal that indicates that communications of the user equipment in the idle mode are to be restricted.

Abstract: Even when handover processing to a radio base station T-eNB not supporting “extended PDCP-SN” is performed on a mobile station UE communicating with a radio base station S-eNB supporting “extended PDCP-SN,” the communications are continued. A mobile communication method according to the invention includes the steps of: causing a radio base station S-eNB to determine to perform handover processing of a mobile station UE to a radio base station T-eNB not supporting “extended PDCP-SN” in a state where a first bearer using “extended PDCP-SN” is established with the mobile station UE, and causing the radio base station S-eNB to create “RRC connection reconfiguration” which instructs deletion of the first bearer and addition of a second bearer using “conventional PDCP-SN” and to transmit “RRC connection reconfiguration” to the mobile station UE.

Abstract: A mobile communication system 100 includes a specific cell configured to allow a specific user to be provided with a service and to allow a non-specific user other than the specific user to be provided with a limited service. The mobile communication system 100 includes a management unit 23 configured to manage a presence state of the non-specific user in the specific cell in addition to a presence state of the specific user in the specific cell.

Abstract: In a state where a mobile station UE is communicating with a radio base station S-eNB supporting “extended PDCP-SN,” the mobile terminal continues communications even if it performs a reconnection procedure with a radio base station T-eNB not supporting “extended PDCP-SN.” A mobile communication method according to the invention includes the steps of, when detecting RLF in the bearer in the above-described state, the mobile station UE resetting setting of “extended PDCP-SN” and establishing a bearer using “conventional PDCP-SN” by performing a reconnection procedure with a radio base station T-eNB not supporting “extended PDCP-SN.

Abstract: In “Immediate MDT,” location information on a mobile station UE is acquired along with “(MDT) MeasurementReport” for all “Trigger Types.” A setting unit 11 of a radio base station eNB according to the present invention is configured to be able to set “MeasConfig” and “includeLocInfo” to “RRCConnectionReconfiguration,” set “MeasObjectId,” “ReportConfigId,” and “MeasId” to the “MeasConfig,” and indicate in the “includeLocInfo” that location information on the mobile station UE is to be attached to “(MDT) MeasurementReport.

Abstract: To improve probability of successfully performing transmission processing by a priority terminal and transmission processing of an emergency call even during congestion. A radio base station eNB according to the present invention includes a RA procedure execution unit 11 configured to execute a RA procedure with a mobile station UE when the mobile station UE returns from a DRX state to a non-DRX state. The RA procedure execution unit 11 is configured to transmit a predetermined MAC-CE in response to a MAC-CE received from the mobile station UE in the above RA procedure, when rejecting the return.

Abstract: To transmit a “CELL UPDATE message” in a radio access network not supporting “Additional Dynamic Transport Format Information for CCCH,” a mobile station UE according to the present invention includes a transmitting unit 13 configured to transmit a “CELL UPDATE message” to a radio access network in a “CELL UPDATE procedure,” and the transmitting unit 13 includes a predetermined information element in the “CELL UPDATE message” only when the radio access network supports the “Additional Dynamic Transport Format Information for CCCH.

Abstract: Network congestion is avoided, which congestion would be otherwise be caused by simultaneous transmission of “RRC Connection Requests” in a case where emergency information is transmitted to mobile stations UE in a broadcast area. A mobile communication method according to the present invention includes: a step A of a core network apparatus transmitting “Write-Replace Warning Request” containing “Overload Action/Traffic Load Reduction Indication” commanding to invoke access restriction to a radio access network apparatus if the core network apparatus is commanded to broadcast emergency information in a broadcast area and if an access restriction invoking condition is met; and a step B of the radio access network broadcasting the emergency information in the broadcast area and invoking the access restriction to a mobile station UE in the broadcast area.

Abstract: A mobile communication method according to the present invention includes executing an RA procedure between a mobile station (UE) and a radio base station (eNB) when the mobile station (UE) in a DRX state makes a return to a non-DRX state in order to perform call origination processing. The method comprises: a step A of causing the radio base station (eNB) in the RA procedure to transmit “Call Identification Request” to the mobile terminal (UE); a step B of causing the mobile terminal (UE) in the RA procedure to notify the radio base station (eNB) of “Call Identification” in response to the “Call Identification Request”; and a step C of causing the radio base station (eNB) in the RA procedure to determine whether to allow the abovementioned return on the basis of the “Call Identification”.

Abstract: An objective is to prohibit retransmission of “UE assistance information”. A mobile communication method according to the present invention includes the steps of: transmitting “UE assistance information” to a radio base station (eNB) by a mobile station (UE), the “UE assistance information” prompting the radio base station (eNB) to change a parameter for the mobile station UE used in the radio base station; notifying, by the radio base station (eNB), the mobile station (UE) of a transmission-prohibited period of the “UE assistance information”; and stopping, by the mobile station (UE), retransmission of the “UE assistance information” on the basis of the transmission-prohibited period.