Abstract: A radio base station apparatus (10) according to the present invention includes: an uplink resource assignor unit (13) configured to assign an uplink resource to a mobile station (01) in response to a random access signal which the mobile station (01) transmits by use of a random access preamble; a random access response signal transmitter unit (14) configured to notify the mobile station (01) of the uplink resource by using a random access response signal; and an uplink scramble decoder unit (16) configured to perform descrambling processing on an uplink signal transmitted from the mobile station (01) by use of the uplink resource, by using an uplink scrambling sequence corresponding to the uplink resource.

Abstract: A base station (eNodeB) performing a radio communication with a user equipment (UE) includes: a transmission format determining unit (16) configured to determine a transmission format of a downlink data channel not to be associated by a control channel, based on a downlink reception signal quality measured by the user equipment; a notification unit (18) configured to notify, to the user equipment, the transmission format determined by the transmission format determining unit; a transmission power controlling unit (19) configured to control a transmission power of the downlink data channel; and a transmitting unit (18) configured to transmit downlink data to the user equipment via the downlink data channel, by using the transmission format determined by the transmission format determining unit.

Abstract: One feature of the present invention relates to a base station for operating multiple cells each having a predefined bandwidth, including: a redirected cell determination unit configured to determine, in response to receipt of mobile station capability information indicative of at least one of a bandwidth and a frequency band that a mobile station residing in a coverage area of the base station is capable of handling, at least one of a redirected cell and a cell layer for the mobile station associated with the mobile station capability information as redirected cell information for redirecting the mobile station; and a transmission unit configured to transmit the redirected cell information to the mobile station.

Abstract: A mobile communication system for performing two-way communication between a mobile station and a wireless access network apparatus. The mobile station comprises a connection setup signal reception timing calculating part that calculates the reception timing of a connection setup signal when a connection request signal is transmitted; and a connection setup signal determining part that determines, in accordance with the reception timing, whether the connection setup signal is received, and then performs, based on that determination, a reception process.

Abstract: A mobile station includes a radio channel condition evaluation unit evaluating a radio channel condition; a radio channel condition averaging unit averaging the evaluated radio channel condition over a predefined time period; a radio channel condition threshold storage unit storing a threshold of the radio channel condition and a message type, the threshold and the message type being specified by a radio access network apparatus; a radio channel condition comparison unit comparing the averaged radio channel condition with the threshold; and a radio channel condition reporting unit transmitting an identifier and the radio channel condition for a cell to the radio access network apparatus, the averaged radio channel condition of the cell being greater than or equal to the threshold.

Abstract: An OFDM signal receiving apparatus (30) includes a receiver section (31) configured to perform receiving processing on a received OFDM signal, for each OFDM symbol duration period; a plurality of deinterleaving sections (341 . . . 34n) each configured to perform deinterleaving processing on data acquired through the receiving processing, in a unit of an interleaving block; and a plurality of decoder sections (361 . . . 36n) each configured to perform decoding processing on data outputted from a corresponding one of the plurality of deinterleaving sections (341 . . . 34n). The interleaving block is a part of a transmission time interval block including data to be transmitted in a transmission time interval.

Abstract: A mobile station performing a voice communication by using a radio resource, including a determination unit configured to determine whether an inputted packet is in a talk-spurt state or in a silent state; a message generating unit configured to generate a resource release request, when the determination unit determines that the inputted packet is in the silent state; and a transmitting unit configured to transmit the resource release request to a radio base station.

Abstract: A base station performing a radio communication with a user equipment includes a transmission format determining unit configured to determine a transmission format of a downlink data channel not to be associated by a control channel, based on a downlink reception signal quality measured by the user equipment, a notification unit configured to notify, to the user equipment, the transmission format determined by the transmission format determining unit, and a transmitting unit configured to transmit downlink data to the user equipment via the downlink data channel, by using the transmission format determined by the transmission format determining unit.

Abstract: In a disclosed method, a mobile station determines whether handover is intra-base-station based on a received signal; the mobile station sends a handover request indicating the determination result to a base station; the base station determines whether the handover is intra-base-station or inter-base-station based on the handover request; and the base station performs an intra-base-station handover process based on a CQI reception level threshold for intra-base-station handover if the handover is intra-base-station.

Abstract: A base station (100) includes: a scheduling unit (106) configured to use, for a particular radio bearer, any one of a persistent scheduling in which data addressed to a mobile station (200) is transmitted at a predetermined timing, and a non-persistent scheduling in which a transmission opportunity is assigned to data addressed to a mobile station having a favorable reception condition; a control information generating unit (110) configured to generate control information to be used in the persistent scheduling; a control information notifying unit (112) configured to notify, to the mobile station, the control information; and a switching notifying unit (112) configured to notify, to the mobile station (200), that a scheduling to be used for the particular bearer should be switched from the non-persistent scheduling to the persistent scheduling, wherein the scheduling unit (106) is configured to switch the scheduling to be used for the particular radio bearer, from the non-persistent scheduling to the persist

Abstract: A transmitter apparatus (10) includes: an MAC-PDU generator section (11) configured to generate an MAC-PDU by multiplexing one or more variable-length information elements each being any one of an MAC-SDU received from an RLC layer, control information, and padding information; and an MAC-PDU transmitter section (13) configured to transmit the generated MAC-PDU. The MAC-PDU generator section (13) is configured to add an MAC header including LI indicating sizes of a plurality of information elements, when the plurality of information elements is multiplexed into the MAC-PDU, and the number of pieces of the LI included in the MAC header is one number smaller than the number of the information elements being multiplexed.

Abstract: In a retransmission control method, a transmitting-side apparatus manages an acknowledgement information reception window; and the transmitting-side apparatus does not perform the window control processing and the retransmission control processing of a packet on the basis of the acknowledgement information for a sequence number of the packet which is included in the acknowledgement information received from the receiving-side apparatus, when the sequence number takes a value outside a range of the acknowledgement information reception window.

Abstract: A radio access network apparatus is disclosed. The apparatus communicates with a mobile station using a dedicated uplink channel, a downlink shared data channel, and a downlink signaling control channel. The apparatus includes a dedicated uplink channel allocating unit which allocates, to a mobile station starting or restarting communications, on a downlink shared data channel, a dedicated uplink channel to be used by the mobile station; a dedicated channel reception detecting unit which detects, on the allocated dedicated uplink channel, a reception of an uplink transmission from the mobile station; and a downlink transmitting unit which, when the dedicated channel reception of the mobile station is detected, transmits a response to the mobile station using the downlink shared data channel and the downlink signaling control channel.

Abstract: The present invention is directed to a channel structuring method that includes a step of providing time frames segmented at a predetermined interval in communication channels of n subcarriers, a step of selecting a predetermined number of subcarriers from n subcarriers and a step of inserting a common control channel signal and a common pilot signal periodically into each of the time frames of the selected subcarriers.

Abstract: A radio base station for establishing a signaling control channel and a shared data channel for a mobile station and communicating with the mobile station includes a broadcast information generating unit configured to generate broadcast information including one or more information blocks; a scheduling information generating unit configured to generate scheduling information for the one or more information blocks; and a broadcast information transmitting unit configured to transmit the scheduling information as part of the broadcast information.

Abstract: A radio access network apparatus includes: a discontinuous reception management unit configured to manage a reception state (a discontinuous reception state or a continuous reception state) for each of one or more mobile stations; a determination and announcement unit configured to determine and announce a correspondence relationship between a discontinuous reception channel and a shared data channel for each mobile station; and a scheduling unit configured to perform scheduling of a downlink shared data channel, wherein, when a paging signal to the mobile station in the discontinuous reception state occurs, the radio access network apparatus transmits the paging signal to the mobile station using the shared data channel determined based on the correspondence relationship.

Abstract: One feature of the present invention relates to a base station for operating multiple cells each having a predefined bandwidth, including: a load measurement unit configured to measure traffic status in each of the cells; a redirected cell determination unit configured to determine either a redirected cell or a cell layer as redirected cell information for redirecting a mobile station based on the traffic status, the redirected cell and the cell layer to which the mobile station is to be redirected; and a transmission unit configured to transmit the redirected cell information to the mobile station in a paging channel.

Abstract: A disclosed method of controlling a change of a transmission parameter including the steps of generating a control data unit which does not include a specification of the change timing for changing a parameter value of the transmission parameter for which processing all within a certain layer or sublayer is possible; transmitting the control data unit only in a first half of a transmission frame; and conducting transmission and/or reception, at a timing of a frame following a frame in which the control data unit was transmitted, based on the changed transmission parameter.

Abstract: An apparatus for packet-priority control for controlling a priority for packets input includes packet-priority setting means for setting hierarchically the priority for the packet input based on predetermined elements, and to adjust, taking into account other elements according to which the priority for the packet varies over time, the set priority, and wireless-resource allocating means for determining a packet for which a wireless resource is to be allocated in accordance with the adjusted priority.

Abstract: A transmitter apparatus includes: an MAC-SDU receiver section (11) configured to receive an MAC-SDU in an MAC layer from an RLC layer; an MAC-PDU generator section (13) configured to generate an MAC-PDU by multiplexing the received MAC-SDU; and an MAC-PDU transmitter section (14) configured to transmit the generated MAC-PDU, MAC header added in the MAC-PDU includes fixed-length “LI” indicating a size of the MAC-SDU multiplexed into the MAC-PDU, and the RLC layer is configured to transmit the MAC-SDU to the MAC layer, the size of the MAC-SDU being not larger than a maximum size settable by the fixed-length “LI”.