Abstract: A terminal including; a memory configured to store a first table and a second table different from the first table; a receiver configured to receive a Radio Resource Control (RRC) Connection setup signaling including information indicating the first table or the second table, a controller configured to configure a buffer table to the first table or the second table according to the information; and, a transmitter configured to transmit a RRC Connection setup complete signaling after configured the table, wherein, the transmitter transmits a signal including an index of the buffer table accorded to amount of data that the terminal has, the index indicates a range of data amount.

Abstract: A terminal including; a memory configured to store a first table and a second table different from the first table; a receiver configured to receive a Radio Resource Control (RRC) Connection setup signaling including information indicating the first table or the second table, a controller configured to configure a buffer table to the first table or the second table according to the information; and, a transmitter configured to transmit a RRC Connection setup complete signaling after configured the table, wherein, the transmitter transmits a signal including an index of the buffer table accorded to amount of data that the terminal has, the index indicates a range of data amount.

Abstract: A terminal, includes a buffer status report table; at least another table for extended buffer status report; a receiver looks for an indication in a signaling received from a base station wherein the indication corresponds to a type of buffer status report table and selects a table from among the buffer status report table and the at least another table for extended buffer status report based on the indication corresponding to the type of buffer status report table, wherein the indication corresponding to the type of buffer status report table can be determined according to a type of the terminal; and an index sender sends the index to a base station an index obtained from the selected table according to an amount of data in a buffer of the terminal.

Abstract: A communication duration configuring method is used in a mobile communication system including a mobile relay station for relaying a wireless communication between a base station and a mobile station. The method includes: configuring at least any of a downlink communication duration where the relay station receives a transmission signal from the base station by restricting a transmission of a signal from the relay station to the mobile station and an uplink communication duration where the relay station transmits a transmission signal to the base station by restricting a transmission of a signal from the mobile station to the relay station; and restricting a transmission of a signal with the mobile station in a first period from detection of a handover until when the communication duration is configured between the relay station and a target base station, and using a desired duration within the first period.

Abstract: A radio communication system, that includes a source base station; a target base station; and a mobile station for receiving either first sequence number or second sequence number, or both of the first and second sequence numbers from the target base station, whereby the first sequence number is transferred from the source base station to the target base station and the second sequence number is added to PDCP (Packet Data Convergence Protocol) SDU (Service Data Unit) which is transferred from the source base station to the target base station.

Abstract: A terminal, includes a buffer status report table; at least another table for extended buffer status report; a receiver looks for an indication in a signaling received from a base station wherein the indication corresponds to a type of buffer status report table and selects a table from among the buffer status report table and the at least another table for extended buffer status report based on the indication corresponding to the type of buffer status report table, wherein the indication corresponding to the type of buffer status report table can be determined according to a type of the terminal; and an index sender sends the index to a base station an index obtained from the selected table according to an amount of data in a buffer of the terminal.

Abstract: The present invention provides a reporting method of terminal Buffer State Report (BSR), obtaining method for obtaining the BSR from a base station, and corresponding terminal, base station, communication system. The terminal includes: buffer state index table; at least one extended buffer state index table; index table selector, selecting one of the index table from the said buffer state index table and the said at least one extended buffer state index table; index determination device, determining the index which is corresponding to the data quantity in the said index table according to the data quantity in the terminal buffer; index sender, sending the said index to the base station.

Abstract: A communication duration configuring method is used in a mobile communication system with a relay station for relaying wireless communications between a base station and a mobile station. The method includes: configuring at least one of a downlink communication duration in which the relay station receives a transmission signal from the base station while limiting a transmission of a signal from the relay station to the mobile station, and an uplink communication duration in which the relay station transmits the transmission signal to the base station while limiting a transmission of a signal from the mobile station to the relay station; measuring a self-interference amount in the relay station; and controlling a configuration of the communication duration according to the self-interference amount.

Abstract: A base station includes plural communication units that each includes a first processing unit that executes physical layer and data link layer processes of radio communication between the base station and a mobile station, and a second processing unit that executes network layer processes of the radio communication; and a third processing unit that is of a network layer and controls a series of radio communication sessions between the base station and the mobile station, based on carrier aggregation using the first processing unit of each of the communication units.

Abstract: A mobile station includes a notifying unit configured to transmit a notification signal to a base station forming a serving cell, when a certain condition used to determine whether or not to perform a handover is satisfied, and a handover processing unit configured to start a handover process according to presence or absence of first communication data after transmission of the notification signal.

Abstract: When completing radio communication with a radio terminal, a transmitting unit of a base station transmits to the radio terminal a validity period of control information on radio communication which has been used to communicate with the radio terminal. When starting radio communication with the radio terminal within the validity period, a communication unit of the base station performs radio communication with the radio terminal without performing a process of exchanging control information. When completing radio communication with the base station, a receiving unit of the radio terminal receives a validity period from the base station. When starting radio communication with the base station within the validity period, a communication unit of the radio terminal performs radio communication with the radio terminal without performing a process of exchanging control information.

Abstract: A communication apparatus that performs receiving processing of data transmitted at timings of a predetermined interval, the communication apparatus includes: a transmitting unit configured to transmit a signal indicating that data is successfully received when the data transmitted at Mth timing according to the predetermined interval is successfully received; and a control unit configured to determine whether or not a retransmission control processing is performed when the signal indicating that the data is successfully received is transmitted, wherein the control unit transmits a signal indicating that the data is successfully received when the retransmission control processing is performed.

Abstract: A reordering method of sending packets, to which numbers indicating the packet order are added, to a mobile station from a base station, and rearranging the order of the packets at the mobile station, this includes forwarding from a source base station to a target base station, packets, not sent to the mobile station before a handover sequence, or packets, a confirmation response of proper reception has not been received from the mobile station, transmitting preferentially those packets from the target base station to the mobile base station and then transmitting packets received from a host station to the mobile station, giving packets information indicating that the packets are jump packets when transmitting the packets to the mobile station, received from the host station with the order jumped, deciding jump packets are not objects of reordering, and performing the reordering process for packets that are objects of reordering.

Abstract: A control method in a mobile communication system, that includes configuring a discard timer corresponding to a service data unit (SDU) for discarding the SDU according to a value of the discard timer that indicates a time elapsed since the discard timer started at reception of the SDU; when a handover is performed, maintaining the value of the discard timer corresponding to the SDU and taking over the elapsed time of the SDU; and discarding the corresponding SDU when the value of the discard timer reaches a given value.

Abstract: A wireless communication system is provided in which a relay station relays wireless communication between a base station and a mobile station. The relay station includes an acquiring unit and a notifying unit. The acquiring unit acquires, from the base station that retains information on the mobile station used for the wireless communication, identification information on the base station. The notifying unit notifies the mobile station of the identification information acquired by the acquiring unit. Furthermore, the mobile station includes a reconnecting unit. When connection with the relay station is released, the reconnecting unit performs a reconnection request with respect to the base station that is identified by the identification information that is notified by the relay station.

Abstract: A mobile communication system comprises a base station and a relay station to relay data transmitted/received between the base station and a mobile station. The base station includes a first scheduler to perform scheduling of initial transmission of the data transmitted/received between the base station and the mobile station via the relay station, and a first manager to manage predetermined wireless resources which are periodically used, as wireless resources used for the initial transmission of the data. The relay station includes a second scheduler configured to perform scheduling of transmission of a message for confirming necessity of retransmission of the data and retransmission of the data and a second manager configured to manage wireless resources used for the transmission of the message and the retransmission of the data.

Abstract: A reordering method of sending packets, to which numbers indicating the packet order are added, to a mobile station from a base station, and rearranging the order of the packets at the mobile station, this includes forwarding from a source base station to a target base station, packets, not sent to the mobile station before a handover sequence, or packets, a confirmation response of proper reception has not been received from the mobile station, transmitting preferentially those packets from the target base station to the mobile base station and then transmitting packets received from a host station to the mobile station, giving packets information indicating that the packets are jump packets when transmitting the packets to the mobile station, received from the host station with the order jumped, deciding jump packets are not objects of reordering, and performing the reordering process for packets that are objects of reordering.

Abstract: A radio communication system, that includes, a source base station; a target base station; and a mobile station in which the mobile station includes a receiving means for receiving first PDCP (Packet Data Convergence Protocol) PDU (Protocol Data Unit) and first sequence number from the source base station and a receiving means for receiving second PDCP PDU from the target base station, in which the second PDCP PDU being created using second sequence number and PDCP (Packet Data Convergence Protocol) SDU (Service Data Unit) that are transferred from the source base station to the target base station; a storage means for storing PDCP SDU corresponding to the first PDCP PDU and PDCP SDU corresponding to the second PDCP PDU; and a reordering means for performing in order delivery of the stored PDCP SDUs based on the first sequence number and the second sequence number.

Abstract: A mobile station that includes a receiving means for receiving first PDCP (Packet Data Convergence Protocol) PDU (Protocol Data Unit) to which a first sequence number is added from a source base station; a receiving means for receiving second PDCP PDU from a target base station that applies a second sequence number transferred from the source base station as a sequence number of PDCP (Packet Data Convergence Protocol) SDU (Service Data Unit) received from a host station and creates the second PDCP PDU and a storage means for storing PDCP SDU corresponding to the first PDCP PDU and PDCP SDU corresponding to the second PDCP PDU and means for performing in order delivery of the stored PDCP SDUs based on the sequence numbers corresponding to the PDCP SDUs.

Abstract: A reordering method of sending packets, to which numbers indicating the packet order are added, to a mobile station from a base station, and rearranging the order of the packets at the mobile station, this includes forwarding from a source base station to a target base station, packets, not sent to the mobile station before a handover sequence, or packets, a confirmation response of proper reception has not been received from the mobile station, transmitting preferentially those packets from the target base station to the mobile base station and then transmitting packets received from a host station to the mobile station, giving packets information indicating that the packets are jump packets when transmitting the packets to the mobile station, received from the host station with the order jumped, deciding jump packets are not objects of reordering, and performing the reordering process for packets that are objects of reordering.