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: Control techniques of broadcast information reception operations at user equipment having coverage enhancement functionalities are disclosed. One aspect of the present invention relates to user equipment, comprising: a transmission and reception unit configured to transmit and receive radio signals to/from a base station; and a broadcast information combination unit configured to receive system information blocks from a cell across multiple windows.

Abstract: Priority control is performed using FPIs. A radio base station eNB according to the present invention includes: a bearer management unit 12 configured to manage FPIs assigned to data flows received from a core network device S-GW via an S1 bearer; and a priority control unit 13 configured to perform priority control over the data flows received from the core network device S-GW via the S1 bearer, in which the bearer management unit 12 establishes a radio bearer with a mobile station UE for each of the FPIs, and the priority control unit 13 transfers each data flow received from the core network device S-GW via the S1 bearer, to the radio bearer corresponding to the FPI assigned to the data flow.

Abstract: Schemes for configuring a longer DRX cycle for user equipment are disclosed. One aspect of the present invention relates to a base station, comprising: a communication control unit configured to control radio communication with user equipment; and a DRX control unit configured to control discontinuous reception (DRX) by the user equipment, wherein the DRX control unit manages a system frame number (SFN), a subframe number and a hyper SFN (HSFN) in the radio communication, wherein the HSFN counts how many times the SFN wraps around, and uses the HSFN to configure an extended DRX (eDRX) having a specified reception period for the user equipment.

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: A paging control method in a mobile communication system including a base station and a communication control apparatus, including: an instruction step in which, in a state where a connection between the base station and the communication control apparatus is established, the base station transmits a connection maintaining instruction signal to the communication control apparatus; and a paging step in which, when the communication control apparatus that receives the connection maintaining instruction signal receives downlink data for the user apparatus, the communication control apparatus holds the downlink data in a buffer and transmits a paging signal for the user apparatus while maintaining the connection between the base station and the communication control apparatus.

Abstract: A mobile station UE is enabled to perform appropriate security processing when the mobile station UE connected to a plurality of radio base stations eNB performs a handover while performing “Inter-site CA”. In a mobile communication system of the present invention, a radio base station eNB#1 and a radio base station eNB#2 are configured to manage security data in cells #1 to #3 under control, and a radio base station eNB#3 and a radio base station eNB#10 are configured to manage no security data in a cell #10 under control. When the mobile station UE switches from a state where CA is performed through the cells #1 and #10 to a state where CA is performed through the cells #2 and #10, the mobile station UE is configured to be notified of information indicating from which PDCP-PDU the security data in the cell #2 is to be applied.

Abstract: An object is to perform a priority control that is more elaborate than that is performed by using a QCI. In a mobile communication system according to the present invention, a mobility management node MME notifies a radio base station eNB, in an “Initial Context Setup procedure” or an “E-RAB Setup Procedure”, following pieces of information in an associated form: an “E-RAB ID” of an E-RAB to be established between a gateway device S-GW and a mobile station UE; one QCI that is assigned to the E-RAB; and one FPI that is assigned to data flow transmitted on the E-RAB. A radio base station eNB establishes, in response to the notification, one S1 bearer corresponding to the E-RAB between the gateway device S-GW and the radio base station and one DRB corresponding to the E-RAB between the mobile station UE and the radio base station.

Abstract: A base station is provided. The base station is used as a first base station in a mobile communication system including the first base station, a second base station communicating with the first base station, and a user apparatus communicating with the first base station. The base station includes a first reception unit configured to receive from the second base station a process ID used for error correction processing; a second reception unit configured to receive data from the user apparatus; and a transmission unit configured to transmit the data and the process ID to the second base station in the case where the data is received from the user apparatus.

Abstract: Techniques are disclosed for avoiding reduction in throughput due to redundant transmission of downlink packets when a split bearer is deleted. A user equipment includes a transmission and reception unit to communicate with a master base station and a secondary base station simultaneously in dual connectivity; an RLC (Radio Link Control) layer processing unit configured to have an RLC layer for the master base station and an RLC layer for the secondary base station; and a PDCP (Packet Data Convergence Protocol) layer processing unit configured to have a PDCP layer transmitting and receiving data to/from the RLC layer for the master base station and the RLC layer for the secondary base station. When the split bearer configured for the secondary base station is deleted, the RLC layer processing unit performs re-establishment on the RLC layer for the secondary base station and releases the split bearer after execution of the re-establishment.

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.

Abstract: An object of the present invention is to perform appropriate priority control even when tethering is performed. A radio base station eNB of the present invention includes an instruction unit 12 configured to give an instruction to a priority call terminal UE#1 to transmit data through a mobile network when a transmission rate of data from the priority call terminal UE#1 falls below a predetermined threshold value in a state where a low priority call bearer is established between the radio base station eNB and a WiFi router 10.

Abstract: A base station in a master cell group configured to establish a bearer to a mobile station together with a base station in a secondary cell group for communication includes a data transfer instruction unit configured to transmit to the base station in the secondary cell group an instruction on whether to transfer downlink data in the base station in the secondary cell group to the base station in the master cell group upon deletion or modification of the secondary cell group or upon deletion of the bearer in the secondary cell group; a reception unit configured to receive the downlink data transferred from the base station in the secondary cell group according to the instruction; and a transmission unit configured to transmit the received downlink data to the mobile station.

Abstract: A user apparatus is provided. The user apparatus is included in a mobile communication system including a first base station, a second base station communicating with the first base station, and the user apparatus communicating with the first base station. The user apparatus includes an obtaining unit configured to obtain from the second base station instruction information indicating an error correction processing operation performed between the first base station and the user apparatus; and a communication unit configured to communicate with the first base station by performing the error correction processing based on the instruction information.

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: A user apparatus including a function for performing communication with a plurality of base stations that includes a first base station and a second base station by dual connectivity is disclosed. The user apparatus includes a measurement unit configured, in a state where the user apparatus performs communication by the dual connectivity, to receive measurement configuration information, from the first base station, for instructing to report an offset indicating a difference between a radio frame in a cell formed by the first base station and a radio frame in a cell formed by the second base station, and to measure the offset according to the measurement configuration information. The user apparatus also includes a measurement reporting unit configured to report the offset measured by the measurement unit to the first base station.

Abstract: An object is to perform a priority control that is more elaborate than that is performed by using a QCI. In a mobile communication system according to the present invention, a mobility management node MME notifies a radio base station eNB, in an “Initial Context Setup procedure” or an “E-RAB Setup Procedure”, following pieces of information in an associated form: an “E-RAB ID” of an E-RAB to be established between a gateway device S-GW and a mobile station UE; one QCI that is assigned to the E-RAB; and one FPI that is assigned to data flow transmitted on the E-RAB. A radio base station eNB establishes, in response to the notification, one S1 bearer corresponding to the E-RAB between the gateway device S-GW and the radio base station and one DRB corresponding to the E-RAB between the mobile station UE and the radio base station.

Abstract: A mobile station that communicates with a base station, including: means that determines whether to transmit, to the base station, quality information indicating radio quality when a predetermined time elapses based on a state, of the mobile station, which is an active state or not in discontinuous reception control; and means that, even when it is determined not to transmit the quality information based on the determination, transmits the quality information when the predetermined time elapses in a case where a scheduling request is transmitted to the base station before the predetermined time elapses.

Abstract: A situation where the important configuration setting is delayed is avoided during execution of “Inter-eNB CA”. A mobile station UE according to the present invention includes: a priority management unit 13 configured to manage a priority of each radio base station, each cell or each RRC message; and an RRC message processing unit 12 configured to, when RRC messages are received from a radio base station eNB#1 and a radio base station eNB#2, process the RRC messages based on the priorities.

Abstract: A communication apparatus configured to perform communication by radio with another communication apparatus based on a setting by configuration information, including: a storage unit configured to hold default configuration information; a transmission unit configured to transmit default configuration information held in the storage unit to the other communication apparatus; a reception unit configured to receive default configuration information from the other communication apparatus; and a control unit configured to perform setting for performing communication by radio with the other communication apparatus by the default configuration information.