Abstract: To execute appropriate process when “Time-Switched UL CA” is executed and even when transmission of uplink information using a plurality of CCs has been scheduled in a same TTI. A radio base station eNB according to the present invention includes a UL transmission processing unit 11 configured to transmit uplink information at TTI#n+4 using a CC allocated over a PDCCH to the mobile station UE at TTI#n. The UL transmission processing unit 11 is configured to transmit the uplink information at each of TTIs using only one CC, and when a plurality of CCs is allocated at TTI#n, the UL transmission processing unit 11 is configured to select uplink information to be transmitted at TTI#n+4, based on a priority corresponding to the uplink information to be transmitted using each of the plurality of CCs allocated.

Abstract: A mobile station (UE) according to the present invention includes a control unit (12) configured to deactivate Scell #2 when the mobile station (UE) is instructed to modify a TAG, to which the Scell #2 belongs, from TAG #2 to TAG #1.

Abstract: The present invention aims to reduce an insertion loss or the like caused by a diplexer inserted to reduce leakage from an uplink bandwidth to a downlink bandwidth of different bands, and thereby to improve a communication quality. A mobile communication method according to the present invention includes the steps of: transmitting simultaneous transmission capability information from a mobile station UE to a radio base station eNB, the simultaneous transmission capability information indicating whether or not the mobile station UE is able to transmit uplink data signal via multiple carriers in multiple bands within a same sub-frame in performing uplink CA; performing scheduling for the mobile station UE by the radio base station eNB based on the simultaneous transmission capability information; and performing communications by the mobile station UE based on the scheduling information.

Abstract: A mobile station UE according to the present invention includes: a managing unit 11 configured to manage one or multiple TAGs each including any of a Pcell and an Scell; an adjusting unit 12 configured to adjust the transmission timings of uplink signals in any of the Pcell and the Scell belonging to the same TAG such that the transmission timings will be the same; and a transmitting unit 13 configured to notify a radio base station eNB of the supportable number of TAGs.

Abstract: The present invention is designated to reduce the deterioration of transmission characteristics upon data transmission, even when soft buffer memory for retransmission control is not sufficiently secured in a mobile terminal apparatus. The present invention provides the steps of, in a base station apparatus (eNB), performing channel coding of information bits (ST 802), performing a rate matching process for the coded bits after interleaving (ST 804), and transmitting transmission data to match the coded bit length after rate matching, to a mobile terminal apparatus (UE) (ST 806), and, in the mobile terminal apparatus (UE), receiving the transmission data (ST 807), performing channel decoding of the received data (ST 810), and discarding part of the received data in accordance with the size of the soft buffer memory in the mobile terminal apparatus (UE) and storing this in the soft buffer memory (ST 812 and ST 813).

Abstract: The present invention is designed to provide a radio communication terminal, a base station apparatus, a radio communication system and a radio communication method which can reduce the cost to be required for an MTC terminal when the LTE system is employed in the network domain of a machine communication system.

Abstract: An objective is to improve communication quality by reducing an insertion loss or the like of a diplexer inserted to reduce a leakage from an uplink band to a downlink band in different bands. A mobile communication method according to the present invention includes the steps of: transmitting simultaneous transmission capability information from a mobile station UE to a radio base station eNB, the simultaneous transmission capability information indicating whether or not the mobile station UE can transmit uplink data signals via multiple carriers in the same sub-frame while performing uplink CA; performing scheduling for the mobile station UE by the radio base station eNB on the basis of the simultaneous transmission capability information; and performing communication by the mobile station UE on the basis of the scheduling information.

Abstract: A mobile station UE according to the present invention includes a controller unit 22. When “1” is set in “R” in the “Activation/Deactivation MAC Control Element”, the controller unit 22 activates only an uplink in a Scell corresponding to “Ci” set to “1”, and deactivates only the uplink in a Scell corresponding to “Ci” set to “0”.

Abstract: Provided is a receiver to improve the accuracy of estimating a covariance matrix RI+N based on a data signal. In an IRC receiver 10 according to the present invention, a data signal is configured to be transmitted in an SFBC pair including two resource elements, an estimated covariance matrix RI+N is configured to include a first covariance matrix RI+N (2m) including a desired signal component in even-numbered resource elements in the SFBC pair and a second covariance matrix RI+N (2m+1) including a desired signal component in odd-numbered resource elements in the space frequency block coding scheme unit, and a covariance matrix averaging unit 13 and a covariance matrix generation unit 16 are configured to perform, as the aforementioned predetermined process, an averaging process on each of elements in the first covariance matrix RI+N (2m) and elements in the second covariance matrix RI+N (2m+1).

Abstract: The IRC receiver 10 according to the present invention includes a channel estimation unit 11 that performs a channel estimation process so as to estimate a channel matrix H, a transmission weight matrix generation unit 13 that generates a transmission weight matrix WTx, a covariance matrix estimation unit 12 that estimates an interference signal covariance matrix (I) including a covariance matrix RI+N and an interference signal component on the basis of CRS, an IRC reception weight generation unit 14 that generates an IRC reception weight WIRC on the basis of the channel matrix H, the transmission weight matrix WTx, and the covariance matrix RI+N, and a received SINR estimation unit 15 that estimates received SINR on the basis of the channel matrix H, the interference signal covariance matrix (I), the transmission weight matrix WTx, and the IRC reception weight WIRC.

Abstract: Appropriate reception processing is performed using a CRS-based estimation method for a covariance matrix RI+N. An IRC receiver 10 according to the present invention includes: a covariance matrix estimation unit 12/13 configured to estimate a covariance matrix RI+N based on a CRS; a missing element insertion unit 14 configured to insert a given value into an inestimable element in an interference-signal covariance matrix RI+N (“˜” is on R) of interference signal components contained in the estimated covariance matrix RI+N; an IRC reception weight generation unit 16 configured to generate an IRC reception weight WIRC by using the control signal and the covariance matrix RI+N having the given value inserted thereinto; and a signal separation unit 17 configured to separate the data signal from a received signal by using the generated reception weight and the control signal.

Abstract: To ensure stable operation of a user terminal even in the case where the user terminal is instructed to transmit uplink signals at different transmission timings with a plurality of component carriers, in a radio communication system provided with a radio base station apparatus that indicates transmission timings of uplink signals for each component carrier, and a user terminal that transmits an uplink signal at a transmission timing set based on transmission timing information indicated from the radio base station apparatus and the like, it is a feature that the radio base station apparatus indicates different transmission timing information in a plurality of component carriers, and that the user terminal avoids simultaneous transmission of uplink signals in the case of performing communications using a plurality of contiguous component carriers.

Abstract: A duplexer D1 or D2 to be used is appropriately selected from multiple duplexers D1 and D2. A mobile communication method of the invention is a mobile communication method for a mobile communication system 1 operated in a band F1. The method includes: a step A of causing a radio base station eNB in the mobile communication system 1 to notify a mobile station UE of information concerning a system X operated in a band 2 adjacent to the band F1 and information concerning a system Y operated in a band 3 adjacent to the band 1; and a step B of causing the mobile station UE to select a duplexer D1 (or D2) to be used from multiple duplexers D1 and D2 on the basis of the information concerning the system X and the information concerning the system Y.

Abstract: The present invention enables, without defining a new band, use of a network signaling value for multi-cluster communication in an existing band where no network signaling value has been defined. A mobile communication method according to the present invention includes: a step A of notifying, by a radio base station eNB, a mobile station UE of a network signaling value through “RRC Reconfiguration,” the mobile station UE being performing single cluster communication using one component carrier in a supported band; and a step B of reducing, by the mobile station UE, transmission power in the single cluster communication on the basis of the network signaling value.

Abstract: The present invention is designed to make it possible to reduce the cost required for a machine communication terminal when the network domain of the machine communication system employs an LTE system. With the radio communication method of the present invention, a radio base station apparatus allocates downlink signals to a machine communication terminal in a predetermined cycle and transmits the allocated downlink signals to the machine communication terminal, and the machine communication terminal receives downlink signals from the radio base station apparatus in the predetermined cycle and demodulates the downlink signals received in the predetermined cycle.

Abstract: The present invention notifies of an EARFCN in an equivalent band by means of an SIB 5 while minimizing the increase in overhead. A mobile communication method according to the present invention includes: a step in which a radio base station eNB in a cell #1 notifies, by means of the SIB 5, of a band #2 and an equivalent band #21 that can be supported in a cell #2 adjacent to the cell #1; and a step in which a mobile station UE assumes that access in the cell #2 is prohibited when having determined that the mobile station does not support the band #2 and the equivalent band #21.

Abstract: In order to appropriately set CA, a mobile communication method according to the present invention includes the steps where: a mobile station UE notifies a radio base station eNB of a “CA band combination” that is supported by the mobile station UE among “CA band combinations”; and the radio base station eNB determines whether or not to set carrier aggregation for the mobile station UE on the basis of whether or not “NS” corresponding to a band used in carrier aggregation is included in the “NS” specified by the received “CA band combination”.

Abstract: A mobile communication method and a mobile station appropriately use equivalent band indicators. The mobile communication method includes: a step of broadcasting, by a radio base station BS, a band indicator indicating a band 19 and an equivalent band indicator indicating bands 5 and B26 overlapping the band 19; and a step of performing, by a mobile station UE, an connection process in a band 5 or B26 when the mobile station is not compatible with the band 19 indicated by the received first band indicator and is compatible with the band 5 or B26 indicated by the received equivalent band indicator.

Abstract: The present invention is designed to use frequency resources effectively, even in the situation where a plurality of mobile terminal apparatuses of varying capabilities coexist. A communication system, in which a mobile terminal apparatus (10) and a base station apparatus (20) communicate using a basic carrier and an extended carrier that is additionally allocated to the basic carrier, in which: the base station apparatus has a setting section (310) that sets, in the extended carrier, a subframe of a first carrier type which can be received in each of a plurality of mobile terminal apparatuses of varying capabilities and a subframe of a second carrier type which can be received in part of the plurality of mobile terminal apparatuses, and a transmission section (203) that transmits the basic carrier and the extended carrier to the mobile terminal apparatus, and the mobile terminal apparatus has a receiving section (103) that receives the basic carrier and the extended carrier from the base station apparatus.

Abstract: To appropriately decrease the amount of interference with respect to an adjacent band appropriately using “A-MPR” and “NS”. A mobile communication method according to the present invention includes a process A in which a mobile station UE notifies a radio base station eNB of “NS (network signaling value)” to which the mobile station UE corresponds, and a process B in which the radio base station eNB controls connection of the mobile station UE based on the notified “NS”.