Abstract: A base station apparatus includes a distribution unit configured to distribute control information on a per-segmented area basis, the segmented area resulting from segmentation of a coverage area into multiple segmented areas, a storage unit configured to store the control information corresponding to the segmented areas, and a determination unit configured to determine a distribution method for each of the segmented areas. The determination unit determines one of a distribution method of periodically distributing the control information corresponding to the segmented areas in the coverage area in charge of the base station apparatus and a distribution method of distributing the control information corresponding to a segmented area requested by a terminal apparatus in response to the requesting by the terminal apparatus.

Abstract: A delivery system includes a delivery apparatus for delivering a common control signal to an area having one or more available communication systems and a terminal apparatus for receiving the common control signal transmitted from the delivery apparatus. The common control signal includes system information required to access the communication systems in the area, and the system information includes multiple control information items. The delivery system causes the delivery apparatus to generate a first common control signal commonly used in one or more areas, to receive a delivery request signal from the terminal apparatus requesting to deliver a certain control information item and to generate a second common control signal including the certain control information item to transmit to the terminal apparatus.

Abstract: User equipment includes a diplexer that separates an uplink frequency band from a downlink frequency band of different component carriers (CCs); a duplexer that separates an uplink frequency band from a downlink frequency band of each of CCs; a reference value calculation unit that calculates a lower limit and, at least, a reference value being greater than the lower limit using control information from a base station; and a transmitter that transmits an uplink signal with transmission power calculated from the reference value while using a radio resource specified by the control signal in the uplink frequency bands of one or more of the CCs, wherein, when the control signal specifies the radio resource of two or more of the CCs, the lower limit is less than that in a case where the control signal specifies the radio resource of less than two of the CCs.

Abstract: A base station apparatus includes a transmitting unit which transmits control information with an area as a unit, which area is in multiple numbers and each of which area is divided from a coverage area; a storing unit which stores control information corresponding to the divided area; and a determining unit which determines an order of distribution for each of the divided areas. The determining unit includes either or both of a unit which randomly determines the order of distribution for each of the divided areas and a unit which determines an order of distribution for distributing the same information with another base station apparatus.

Abstract: A distribution apparatus which distributes to multiple regions includes: a storage unit which stores each of radio communications systems usable for each of the regions; a selecting unit which selects, out of the multiple regions to which the distribution apparatus distributes, first regions in which a radio communications system in operation is the same; and a distribution unit which distributes, based on each of the radio communications system usable for each of the regions that is stored in the storage unit, all or some of information on the radio communications system for each of the first regions selected by the selecting unit. One or multiple radio communications systems are usable in each of the regions.

Abstract: A delivery apparatus for delivering to multiple areas, wherein one or more radio communication systems are available in each of the areas, includes a storage unit configured to store system information for each of the areas, the system information being required to connect to the available radio communication systems, a detection unit configured to detect a second delivery apparatus for delivering to a portion of the delivery areas of the delivery station and a delivery unit configured to deliver system information for each of the areas as control information, the system information being required to connect to a radio communication system available in the area.

Abstract: A base station includes an internal-area information storing unit storing system information necessary to connect to radio systems in an area to which the base station belongs; an external-area transmission method information storing unit storing external-area transmission method information indicating a method of transmitting a common control signal in an area adjacent to the area to which the base station belongs; and a transmitting unit wirelessly transmitting the common control signal including the system information stored in the internal-area information storing unit or the external-area transmission method information to the terminal equipment. The common control signal including the external-area transmission method information is transmitted at regular or irregular transmission timings.

Abstract: One aspect of the present invention relates to a mobile station having a SAR backoff function including a SAR signaling receiving unit configured to receive a SAR signaling from a base station, the SAR signaling indicating that a SAR backoff is available, and a maximum transmit power determination unit configured to determine maximum transmit power of the mobile station depending on whether the SAR signaling receiving unit has received the SAR signaling, wherein in response to receiving the SAR signaling at the SAR signaling receiving unit, the maximum transmit power determination unit applies a power reduction factor associated with the SAR backoff to determine the maximum transmit power.

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: A distribution apparatus distributes a common control signal to one or more regions with one or more communications system which can be used. The common control signal includes system information required for accessing the communications system of each of the regions. The distribution apparatus has a unit which generates the common control signal of each of the regions, a unit which receives a distribution request signal from a terminal apparatus which requests for distribution of the common control signal, and a unit which transmits the common control signal according to a distribution rule. The distribution rule is updated according to a statistical trend of the distribution request signals received.

Abstract: The base station includes a scheduler controller that controls scheduling operations of a downlink and an uplink. The scheduler controller controls the scheduling operation of the DL and the UL in accordance with a first criterion such that a subframe of user equipment which includes UL data starts, prior to termination of a subframe of base station not including DL data, a second criterion such that the subframe of the user equipment which does not include the UL data starts, prior to the termination of the subframe of the base station including the DL data, or a third criterion such that the subframe of the user equipment which includes a signal other than an ACK/NACK starts, prior to the termination of the subframe of the base station including the DL data.

Abstract: A base station capable of communications using plural component carriers includes a measurement result receiving unit configured to receive a measurement result of a reception condition from a mobile station, a determining unit configured to determine whether a change of a primary cell or a secondary cell allocated to the mobile station occurs based on the received measurement result, and an initializing unit configured to initialize information including the measurement result of the reception condition received from the mobile station for the component carrier corresponding to the primary cell or the secondary cell which is affected by the change.

Abstract: A terminal apparatus that performs radio communication with a base station apparatus in a mobile communication system, including: a transmission mode information receiving unit configured to receive transmission mode information, from the base station apparatus, corresponding to a transmission mode that should be set in the terminal apparatus; a transmission mode setting unit configured to set the terminal apparatus to the transmission mode if the terminal apparatus can perform radio transmission in the transmission mode corresponding to the transmission mode information received by the transmission mode receiving unit; and a radio transmission unit configured to perform radio transmission in the transmission mode.

Abstract: A base station apparatus used for a FDD mobile communications system which uses at least a predetermined frequency bandwidth is disclosed. The base station apparatus includes a control unit which provides an instruction signal which at least indicates a frequency band used in wireless communications; and a unit which wirelessly communicates with a user apparatus according to the instruction signal, wherein, if the base station apparatus belongs to a predetermined border area between mobile communications systems, an instruction signal which indicates that use of one part of the predetermined frequency band is permitted, but use of another part is prohibited is provided by the control unit, and, if the base station apparatus belongs to a predetermined non-border area, an instruction signal which indicates that use of one part and use of the other part are permitted.

Abstract: A distribution apparatus distributes a common control signal to one or more regions with one or more communications system which can be used. The common control signal includes system information required for accessing the communications system of each of the regions. The distribution apparatus has a unit which generates the common control signal of each of the regions, a unit which receives a distribution request signal from a terminal apparatus which requests for distribution of the common control signal, and a unit which transmits the common control signal according to a distribution rule. The distribution rule is updated according to a statistical trend of the distribution request signals received.

Abstract: A delivery system includes a delivery apparatus for delivering a common control signal to an area having one or more available communication systems and a terminal apparatus for receiving the common control signal transmitted from the delivery apparatus. The common control signal includes system information required to access the communication systems in the area, and the system information includes multiple control information items. The delivery system causes the delivery apparatus to generate a first common control signal commonly used in one or more areas, to receive a delivery request signal from the terminal apparatus requesting to deliver a certain control information item and to generate a second common control signal including the certain control information item to transmit to the terminal apparatus.

Abstract: A delivery apparatus for delivering to multiple areas, wherein one or more radio communication systems are available in each of the areas, includes a storage unit configured to store system information for each of the areas, the system information being required to connect to the available radio communication systems, a detection unit configured to detect a second delivery apparatus for delivering to a portion of the delivery areas of the delivery station and a delivery unit configured to deliver system information for each of the areas as control information, the system information being required to connect to a radio communication system available in the area.

Abstract: A distribution apparatus which distributes to multiple regions includes: a storage unit which stores each of radio communications systems usable for each of the regions; a selecting unit which selects, out of the multiple regions to which the distribution apparatus distributes, first regions in which a radio communications system in operation is the same; and a distribution unit which distributes, based on each of the radio communications system usable for each of the regions that is stored in the storage unit, all or some of information on the radio communications system for each of the first regions selected by the selecting unit. One or multiple radio communications systems are usable in each of the regions.

Abstract: A base station apparatus includes a transmitting unit which transmits control information with an area as a unit, which area is in multiple numbers and each of which area is divided from a coverage area; a storing unit which stores control information corresponding to the divided area; and a determining unit which determines an order of distribution for each of the divided areas. The determining unit includes either or both of a unit which randomly determines the order of distribution for each of the divided areas and a unit which determines an order of distribution for distributing the same information with another base station apparatus.

Abstract: A base station includes an internal-area information storing unit storing system information necessary to connect to radio systems in an area to which the base station belongs; an external-area transmission method information storing unit storing external-area transmission method information indicating a method of transmitting a common control signal in an area adjacent to the area to which the base station belongs; and a transmitting unit wirelessly transmitting the common control signal including the system information stored in the internal-area information storing unit or the external-area transmission method information to the terminal equipment. The common control signal including the external-area transmission method information is transmitted at regular or irregular transmission timings.