Abstract: An objective is to appropriately select a “timing reference cell” and a “Pathloss reference cell” for an Scell in an sTAG. A mobile station UE according to the present invention includes a second management unit 11B configured to use a “UL Cell” managed in association with a “DL only Cell” where to perform a downlink communication only, as a Pcell or an Scell in a pTAG.

Abstract: To improve the probability of successfully performing transmission processing by a priority terminal and transmission processing of an emergency call even during congestion. A mobile station UE according to the present invention includes: a reception unit 21 configured to acquire an emergency random access channel resource from a radio base station eNB; a RA procedure execution unit 23 configured to perform a RA procedure by using the emergency random access channel resource when the mobile station UE is a priority terminal or when the mobile station UE transmits an emergency call; and an access control unit 22 configured to perform ACB on transmission of a signal regarding the transmission processing. The access control unit 22 is configured not to perform ACB on transmission of “RA Preamble” in a RA procedure for the mobile station UE in the DRX state to transmit an uplink signal.

Abstract: There is disclosed user equipment including a communication unit for executing carrier aggregation and for executing communication through a plurality of carriers, and an antenna pictogram display unit for displaying, through an antenna pictogram, at least whether communication is allowed. When execution of the carrier aggregation is allowed, the antenna pictogram display unit displays an indication that the execution of the carrier aggregation is allowed together with at least one antenna pictogram.

Abstract: Setting of transmission of “UE assistance information” is conducted suitably. A mobile communication method according to the present invention includes the steps of, when an attach process of a mobile station UE is conducted, causing a radio base station eNB or a mobility management node MME to transmit an information element indicating whether it is suitable to transmit “UE assistance information” that urges a change of parameters for the mobile station UE used in the radio base station eNB, to the mobile station UE, and causing the mobile station UE to determine whether it is suitable to transmit “UE assistance information” to the radio base station eNB, on the basis of the information element.

Abstract: To improve the probability of successfully performing transmission processing by a priority terminal and transmission processing of an emergency call. A mobile station UE according to the present invention includes an RA procedure execution unit 13 configured to transmit “RA Preamble” by the Contention-based method in an RA procedure for transmitting an uplink signal performed when the mobile station UE is in the DRX state, and an access control unit 12 configured to perform ACB on the transmission of “Contention-based RA Preamble”.

Abstract: To improve probability of successfully performing origination processing by a priority terminal and origination processing of an emergency call even during congestion. In a mobile station UE according to the present invention, an AS function unit 11 is configured to receive SSAC information from a radio base station eNB and transmit the SSAC information to the NAS function unit 12 at a predetermined timing, and a NAS function unit 12 is configured to perform SSAC on transmission of “RA Preamble” in a RA procedure for the mobile station UE in the DRX state to transmit an uplink signal, or on transmission of an uplink signal from the mobile station UE in the Non-DRX state.

Abstract: When a network is requiring access barring, a mobile device determines whether a reference value broadcasted to the mobile device indicates a value determining that an access is denied regardless of a numerical value generated by the mobile device, or indicates a value having a possibility that an access of a certain mobile device is denied while an access of another mobile device is allowed. In the latter case, the mobile device determines appropriateness of an access by performing predetermined processing using the reference value as a value to be checked for a relationship with a numerical value generated by the mobile device when the mobile device does not have a special type access class, and uses a value enabling allowance of an access without performing the predetermined processing as a value for determining appropriateness of an access when the mobile device has the special type access class.

Abstract: To provide restriction control independently from the packet call and the voice call. A mobile station UE according to the present invention is configured to perform SSAC for determining whether or not to permit transmission of an IMS-related originating signal according to a SSAC restriction information broadcasted. IMS function 13 is configured to notify NS function 12 of an originating request containing an identifier indicating the IMS-related originating signal, when determining to permit transmission of the IMS-related originating signal. The NAS function 12 is configured to notify AS function 11 of the originating request containing the identifier indicating the IMS-related originating signal. The AS function 11 is configured not to perform ACB for determining whether or not to permit transmission of the INS-related originating signal, in response to the notified originating request containing the identifier.

Abstract: To improve probability of successfully performing transmission processing by a priority terminal and transmission processing of an emergency call even during congestion. A mobile communication method according to the present invention includes the steps of: causing a radio base station eNB to transmit “UE Context Release Request” regarding a predetermined mobile station UE to a mobility management node MME, the “UE Context Release Request” containing identification information of multiple target mobile stations UE; causing the mobility management node MME to release an access bearer of the predetermined mobile station UE in response to the “UE Context Release Request”, and transmit “UE Context Release Command” regarding the predetermined mobile station UE to the radio base station eNB, and causing the radio base station eNB to transmit “RRC Connection Release” to the plurality of target mobile stations UE.

Abstract: To provide a communication control system and a communication control method, in which call connection delay can be reduced even in a case where a resource capable of continuing an established communication bearer in a radio communication system in a transition destination cannot be captured when a mobile station transitions to another radio communication system. An eNB 110 includes a handover control unit 115 configured to determine whether a handover of a PS bearer to a 3G system 20 is performed based on the priority of the PS bearer to the CS bearer when a connection destination of a mobile station 300 being in connection with an LTE system 10 using the PS bearer is switched to the 3G system 20.

Abstract: The first communication system is configured to determine whether or not to provide information that instructs the UE 10 to connect to the second communication system, based on a subscriber identifier allocated to the UE 10. The subscriber identifier is configured to identify whether or not the UE 10 is allowed to utilize the second communication system.

Abstract: In order to suppress an increase in signal quantity attributed to repetition of transition to a “Preservation state” and return to an “Active state” when multiple applications are operated independently, a mobile station (UE) of the invention includes: a management unit (12) which manages a transmission timing for regular data not involving a user operation in each of multiple applications (#1 to #N); and a transmission unit (13) which transmits a “RRC CONNECTION REQUEST” to a radio access network when the mobile station (UE) transitions from a “Preservation state” to an “Active state.” The transmission unit (13) is configured to adjust a transmission timing for the “RRC CONNECTION REQUEST” based on the transmission timings for the regular data not involving the user operation in the multiple applications (#1 to #N).

Abstract: Avoided is hasty control occurring due to repetition of transition to a “Preservation state” and return to an “Active state.” A mobile station UE according to the present invention includes: a transmission unit 13 configured to transmit “SIGNALLING CONNECTION RELEASE INDICATION” commanding release of signalling connection to a radio access network upon detecting that there is no more data to be transmitted; and a determination unit 12 configured to determine whether the mobile station UE is in a particular state or not. The transmission unit 13 is configured to keep the “SIGNALLING CONNECTION RELEASE INDICATION” from being transmitted to the radio access network if the determination unit 12 determines that the mobile station UE is in the particular state, even when the transmission unit 13 detects that there is no more data to be transmitted.

Abstract: Upon detecting an opportunity to release E-RABs related to mobile stations, a mobility management entity transmits a single E-RAB release information message that collectively specifies E-RABs to be released to a base station communicating with the mobile stations. Subsequently, upon receiving the E-RAB release information message, the base station transmits a single E-RAB release information acknowledge message to the mobility management entity. Upon receiving the E-RAB release information acknowledge message, the mobility management entity updates information related to the E-RABs so that the information indicates release of the E-RABs.

Abstract: To suppress increase in the amount of signals due to repetition of transition to a “Preservation state” and return to an “Active state,” a mobile station UE according to the present invention includes: a receiving unit 13 configured to receive access restriction information against communication satisfying a predetermined condition during the “Preservation state,” from a radio access network; and a transmitting unit 12 configured to transmit an “RRC CONNECTION REQUEST” to the radio access network in a case where the mobile station UE transitions from the “Preservation state” to the “Active state.” The transmitting unit 12 is configured to decide whether or not to transmit an “RRC CONNECTION REQUEST” for the communication satisfying the predetermined condition, on the basis of the access restriction information.

Abstract: A user equipment is capable of executing plural applications in parallel. The user equipment obtains, for each application, packet statistics information relating to packets that each of the plural applications transceives, for reporting to a base station. The base station, based on the packet statistics information received from the user equipment, calculates a state transition parameter for use in controlling the state transition of the user equipment and the base station. The base station executes state transition control based on the calculated state transition parameter.

Abstract: A mobile communication method according to the present invention includes a step of a radio network controller of a first communication scheme transmitting an instruction signal to a mobile station UE in a case where a radio access capability of the mobile station UE is contained in the received connection setup request signal, the instruction signal instructing the mobile station UE to make an attempt to set up a connection in a cell of a second communication scheme, and a step of the mobile station UE setting up the connection in the cell of the second communication scheme in response to the received instruction signal, wherein in the mobile station UE transmits a connection setup request signal not containing the radio access capability of the mobile station UE, in a case where the mobile station UE detects the predetermined trigger but the attempt to setup the connection in the cell of the second communication scheme has been made a predetermined number of times or more within a predetermined period of ti

Abstract: A mobile communication system in which a home cell limits access from a first mobile station, and when the first mobile station communicating via a macro cell using the same frequency as the home cell enters a predetermined area near the home cell, the first mobile station is caused to perform handover to a different-frequency macro cell selected from among macro cells covering the predetermined area and using frequencies different from that used in the home cell.

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 a timer value for determining a frequency of transmitting a state transition request signal for causing a user equipment to transition to a power saving state after completion of communication of a data signal depending on the resource usage condition, and the timer value determined by the determination unit (152) is broadcast to the user equipment.

Abstract: A radio base station apparatus includes an information retrieval unit configured to retrieve information of the radio base station apparatus or information of a device that is connected to the radio base station apparatus, a timer value determination unit configured to determine, based on the retrieved information, a timer value representing a time period from termination of data communication with a mobile station until causing the mobile station to transition to an idle state; and an idle transition controller configured to cause the mobile station to transition to the idle state, based on the determined timer value.