Abstract: A radio base station BTS includes an estimation unit 13 configured to estimate a time when a buffer of a scheduled mobile station UE becomes empty based on a remaining amount of data in the buffer of the mobile station UE, the remaining amount reported by the mobile station, and a sending unit 15 configured to send the mobile station UE a Zero Grant instructing to stop transmission of a data signal via an E-DPDCH based on the estimated time.

Abstract: A mobile communication method includes step for transmitting a first scheduling grant information to a first mobile station UE scheduled in a current scheduling assignment slot, and transmitting a second scheduling grant information to a second mobile station UE to be scheduled in a next TTI by the radio base station Node B at a time of switching between mobile stations UE to be scheduled, the first scheduling grant information instructing to stop transmission of a MAC-e PDU in a next transmission time interval, the first scheduling grant information corresponding to a minimum size of the MAC-e PDU which can contain only one MAC-d PDU.

Abstract: A radio base station (NodeB), wherein a scheduling unit (13) is configured to determine scheduling grant information to be transmit to a mobile station (UE) scheduled for the next scheduling assignment interval based on the predicted range of receivable power at the starting point of the next scheduling assignment interval.

Abstract: A mobile communication system comprises: a data amount measurement unit (224) configured to measure an actual usage record of the first call type during execution of the first call type after starting the first call type; and MAC processing unit (222) configured to set a scheduling order of the first call type based on the actual usage record of the first call type, during execution of the first call type.

Abstract: A receiving apparatus (10) provided with: a management unit (13) configured to manage a target error rate Pt in a target number of retransmission Nt; a measurement unit (14) configured to measure the initial transmission rate TPUTinit of the data at a transmitting apparatus (10); and a calculation unit (15) configured to calculate, with respect to an error rate P(n) in a number of retransmission n, the reception rate TPU of data at a receiving apparatus (10) by a Equation (2A). TPUT = TPUT init Nt + Pt + 1 .

Abstract: A radio base station NodeB includes a transmission power control unit 13 configured to perform inner-loop transmission power control on an E-DPDCH, a scheduling unit 16 configured to determine AG to be transmitted to a mobile station UE which is subjected to scheduling of an EUL communication at a next TTI so that the total received power satisfies the target total received power, a scheduling grant information transmission unit 17 configured to transmit the AG determined to the mobile station UE which is subjected to scheduling of the EUL communication at a next TTI, and a target total received power setting unit 14 configured to change the target total received power depending on, if the normal uplink communication is provided, or if a plurality of the high-speed uplink communications are provided.

Abstract: A base station includes a measuring unit and a setting unit. The measuring unit configured to measure at least any one piece of information of an absolute value of received total wideband power in the cell, a dispersion value of the received total wideband power in the cell, a reception success rate which is a rate of success in packet reception in the cell, and a simultaneous connecting user number which is the number of radio terminals connected to the cell simultaneously. The setting unit configured to set target received total wideband power which is a target for the received total wideband power in the cell based on information measured by the measuring unit.

Abstract: A BTS 100 includes a MAC-hs processing unit configured to determine if the priority of a communication to be executed for the communication request received is equal to or higher than a predetermined priority, and a HARQ process control unit 121 configured to assign a priority communication to be executed for the communication request to the retransmission processes in preference to other communications if the determination unit determines that the priority is equal to or higher than the predetermined priority. In a case where all the retransmission processes are occupied by the other communications, the HARQ process control unit 121 discards some of the packets stored in a HARQ buffer, based on the number of the retransmission processes required for executing the priority communication.

Abstract: A call admission control device efficiently controls admission of a new call. In a scheduling operation, a congestion state in a cell is estimated based on the number or ratio of the mobile stations whose average transmission data rates have been initialized, and call admission control is performed, thereby appropriately performing the call admission control regardless of the occurrence of traffic or a mode of a cell.

Abstract: A radio base station (100) executes a hybrid automatic repeat request including an automatic repeat request to request a source of a signal sequence (B1) transmitted via E-DPDCH to retransmit the signal sequence (B1) and combining process of the signal sequence (B1) received a plurality of times as a consequence of the retransmission. The radio base station (100) includes: a E-DPDCH despreading unit (113) configured to execute despreading process of the signal sequence (B1) received via the E-DPDCH; a HARQ buffer (121) configured to store the signal sequence (B1) outputted from the E-DPDCH despreading unit (113); and a HARQ control unit (123) configured to execute the combining process by using the signal sequence (B1) stored in the HARQ buffer (121).

Abstract: Each of a plurality of frequencies defines a combination of at least one uplink from among a plurality of types of uplink radio access, and at least one downlink from among a plurality of types of downlink radio access. A base station (100a) includes an evaluation point calculation unit (150) which calculates the uplink evaluation points for each of the plurality of frequencies based on the uplink parameters contributing to the uplink throughput, and calculates the downlink evaluation points for each of the plurality of frequencies based on the downlink parameters contributing to the downlink throughput, and a selection unit (160) which selects the frequency to be used by the radio terminal of frequency selection target from among the plurality of frequencies, based on the uplink evaluation points and the downlink evaluation points.

Abstract: A transmission rate control method according to the present invention includes: determining, at the radio base station NodeB, a maximum granted value that can be notified to the mobile station UE, in accordance with the happy bit notified from the mobile station UE; calculating, at the radio base station NodeB, as an allowable value to be notified to the mobile station UE, a granted value not more than the maximum granted value; notifying, from the radio base station NodeB to the mobile station UE, the granted value calculated at the radio base station NodeB, by using a transmission rate control channel; and transmitting, from the mobile station UE, the uplink user data, at a transmission rate corresponding to the granted value notified from the radio base station NodeB.

Abstract: Provided are a radio packet type determining section that determines at least whether a radio packet is a first transmission packet that is allocated persistently at predetermined time intervals or a retransmission packet among radio packets transmitted to a radio communication terminal, a first transmission interval control section that controls a transmission interval of each first transmission packet so as to disperse the first transmission packet and a retransmission packet of a radio packet index different from that of the first transmission packet, a retransmission interval control section that controls a transmission interval of each retransmission packet, and a radio resource allocation section that performs allocation of radio resources based on the transmission interval of each first transmission packet and the transmission interval of each retransmission packet.

Abstract: A mobile communication method according to the present invention includes: notifying, from a MAC-e functional unit 10, to a first mobile station UE through a first E-AGCH, a transmission rate for the EUL in the first mobile station UE, in a 2 ms interval; notifying, from the MAC-e functional unit 10, to a second mobile station UE through a second E-AGCH, a transmission rate for the EUL in the second mobile station UE, in a 10 ms interval; notifying, from the MAC-e functional unit 10 to a MAC-hs functional unit 20, the number of the first E-AGCH and the number of the second E-AGCH, in each sub-frames; and determining, at the MAC-hs functional unit 20, a transmission power for a HS-PDSCH, based on the respective numbers of the first E-AGCH and the second E-AGCH.

Abstract: A packet transmission control device relating to the present invention includes: a storage unit configured to store a transmission resource available for use in the packet transmission, radio quality information on the downlink, and a transmission method to be used in the packet transmission while associating them with one another; a determination unit configured to determine a transmission method to be used in the packet transmission on the basis of the radio quality information, on the downlink reported from the mobile stations and the transmission resource available for use in the packet transmission, by referring to the storage unit; and a packet transmission unit configured to transmit the packet by using the determined transmission method.

Abstract: A radio control method is arranged to use a mobile station 10, an active set 20 to perform radio communication with the mobile station 10, and a radio control apparatus 30 for controlling the radio communication between the mobile station 10 and the active set 20, and the radio control method has a determination step wherein in a situation where the mobile station 10, while performing radio communication through A-DPCH with the active set 20, performs radio communication through HS-PDSCH with one radio base station included in the active set 20, the radio control apparatus 30 makes a determination of maintenance to perform a process of maintaining the radio communication through the HS-PDSCH, on the occasion when the mobile station 10 gives a change command to change a configuration of the active set 20 so as to result in failure in maintenance of the radio communication through the HS-PDSCH.

Abstract: A base station includes a scheduling unit 120a and a call admission control unit 120b. The scheduling unit 120a includes a first determination unit 126 to determine whether or not a transmission frequency of transmission rate control data for decreasing transmission rate for uplink data is equal to or higher than a transmission frequency threshold, a second determination unit 127 to determine whether or not a counted number value of rate lowering event occurrences exceeds a counted number threshold, the rate lowering event being an event that decreases transmission rate for uplink data, and a setting unit 128 to set admission permission information to information for limiting an admission of a new call in a case where the transmission frequency is equal to or higher than the predetermined frequency, and where the counted number value of rate lowering event occurrences exceeds the counted number threshold.

Abstract: A radio communication control system controlling a transmission power of a shared control channel for transmitting a control signal to a plurality of mobile stations. The system includes a transmission power lower limit value setting section configured to set a lower limit value of the transmission power of the shared control channel, and to set the transmission power of the shared control channel at the lower limit value when the transmission power of the shared control channel is lower than the lower limit value.

Abstract: The radio terminal 10 includes a communication unit 11 configured to transmit a happy bit to the base station. The base station 100 includes: a comparison unit 126 configured to compare a priority class assigned to a control target terminal with a priority class assigned to a comparison target terminal; a first determination unit 127 configured to determine whether a happy bit rate is lower than a predetermined threshold; and a scheduling unit 120a configured to transmit, to the control target terminal, transmission rate decrease data for decreasing the transmission rate, when the priority class assigned to the control target terminal is lower than the priority class assigned to the comparison target terminal and when the happy bit rate is lower than the predetermined threshold.

Abstract: A base station includes a scheduling unit and a call reception control unit. The call reception control unit includes a managing unit that updates total resource usage amount based on total resource allocation amount and manages the total resource usage amount, and a decision unit that adds an initial radio resource to be allocated to a new call to the total resource usage amount and decides whether the new call can be accepted. The managing unit updates the total resource usage amount by subtracting a radio resource in response to the release of an existing call that radio resource allocation being not controlled at each transmission time interval. The managing unit manages the total resource usage amount without subtracting a radio resource in response to the release of an existing call that radio resource allocation being controlled at each transmission time interval.