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 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 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: 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: 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 radio communication system includes: a serving cell (for example, cell A functional unit 120) configured to transmit, to a radio terminal 10, an AG for directly specifying an uplink user data transmission rate and an RG for relatively specifying the uplink user data transmission rate; and a non-serving cell (for example, cell B functional unit 130) configured to transmit the RG to the radio terminal without transmitting the AG. The non-serving cell includes an instruction unit 132 configured to instruct the serving cell to decrease the uplink user data transmission rate, when a reception power of uplink user data received from the radio terminal 10 exceeds a predetermined interference threshold.

Abstract: A base station includes a first selecting unit that selects a reduction target terminal, a first calculating unit that calculates a reduction amount of assigned transmission rate assigned to the reduction target terminal, a second selecting unit that selects an increase target terminal, a second calculating unit that calculates an increase amount of the assigned transmission rate assigned to the increase target terminal, and a transmitting unit that transmits transmission rate control date to a radio terminal. The second selecting unit selects the increase target terminal and the second calculating unit calculates the increase amount when the reduction target terminal is not selected by the first selecting unit.

Abstract: A radio base station according to the present invention includes: a determiner determining a transfer rate of data transferred from the radio network controller to the radio base station, based on a predetermined bandwidth of a wired transmission path, a bandwidth of the wired transmission path not being used, and a bandwidth of the wired transmission path being used by the mobile station; and a notifier notifying the radio network controller of the determined transfer rate.

Abstract: A radio base station includes an assignment unit that selects a transmission rate control channel channelization code assigned to a fewest mobile stations, upon receipt of a communication start request from a mobile station, from among a plurality of transmission rate control channel channelization codes specified by a radio network controller and then assigns a selected transmission rate control channel channelization code to the mobile station.

Abstract: A mobile communication system is configured as a mobile station in a first communication state shifts to a second communication state when at least one high speed uplink packet communication compliant radio link is established by the mobile station.

Abstract: A mobile communication method includes: causing a cell under control of a radio base station to determine an initial granted value when an uplink user data transmission channel is set up between a mobile station and the cell under the control of the radio base station; causing a radio network controller to notify the mobile station of the initial granted value determined by the cell under the control of the radio base station; and causing the mobile station to transmit uplink user data via the uplink user data transmission channel at a transmission rate corresponding to the initial granted value after the uplink user data transmission channel is set up, and the cell under the control of the radio base station sets the initial granted value to be equal to the granted value used in transmitting only a single data unit on the uplink user data transmission channel.

Abstract: A base station according to the present invention includes: a detecting unit configured to detect a discard of the uplink user data received from a radio terminal; and a scheduling unit configured to transmit an AG or an RG instructing a decrease of an SG assigned to the radio terminal, when the discard of the uplink user data is detected by the detecting unit.

Abstract: The radio base station includes: a step of making a comparison between transmission format identification information received from the mobile station and transmission format identification information based on a data amount calculated in a step of calculating the data amount of uplink user data; and a step of retransmitting a calculated scheduling grant if the radio base station determines, based on the comparison result in the step of the comparison, that a data amount indicated by the transmission format identification information received from the mobile station is larger than the data amount calculated in the aforementioned step.

Abstract: A base station includes: a determination unit that determines whether or not a total of an initial transmission rate and assigned transmission rates exceeds a maximum receiving transmission rate when the base station receives a communication start request from a radio terminal; a selecting unit that selects a decrease target terminal when the total of the initial transmission rate and the assigned transmission rates exceeds the maximum receiving transmission rate; and a transmitting unit that transmits transmission rate decrease data to the decrease target terminal, and the base station causes the total of the initial transmission rate and the assigned transmission rates to be equal to or less than the maximum receiving transmission rate by transmitting the transmission rate decrease data.

Abstract: A base station includes a first selecting unit that selects a reduction target terminal, a first calculating unit that calculates a reduction amount of assigned transmission rate assigned to the reduction target terminal, a second selecting unit that selects an increase target terminal, a second calculating unit that calculates an increase amount of the assigned transmission rate assigned to the increase target terminal, and a transmitting unit that transmits transmission rate control date to a radio terminal. The second selecting unit selects the increase target terminal and the second calculating unit calculates the increase amount when the reduction target terminal is not selected by the first selecting unit.

Abstract: A mobile communication method according to the present invention includes: controlling, at the radio base station NodeB, the transmission power in the DPCCH by use of an inner loop transmission power control based on a target SIR; transmitting, at the mobile station UE, the uplink packet, at the transmission power in the E-DPDCH, the transmission power being determined based on the SG and the transmission power in the DPCCH; and determining, at the radio base station NodeB, the target SIR, by use of an outer loop transmission power control based on a HARQ transmission number and a reception result of an uplink packet transmission of the HARQ transmission number, the HARQ transmission number indicating what number transmission in the HARQ retransmission control is the uplink packet transmission.

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 mobile communication method includes: (A) assigning, at a radio network controller, a channelization code and a transmission timing for the mobile station on the basis of a status of use of a channelization code and a transmission timing in a sector other than a specific sector when the mobile station sets a radio link with the radio base station in the specific sector; and (B) notifying, from the radio base station, the mobile station of the transmission power control information via the transmission power control channel using the channelization code and the transmission timing assigned at the radio network controller.