摘要:
A radio base station eNB according to the present invention includes: a CQI reception unit 11 configured to receive CQI in PDSCH from a mobile station UE; a CQI adjustment unit 13 configured to adjust the received CQI based on a transmission acknowledgement result for a downlink data signal transmitted via the PDSCH; a selectable TF number calculation unit 22 configured to calculate a selectable maximum transport block size based on the number of mobile stations UE in each scheduling unit period; and an MCS selection unit 15 configured to select a modulation scheme and a coding rate, which are to be applied to each resource blocks in the PDSCH, based on the adjusted CQI and a transmission format corresponding to the calculated selectable maximum transport block size.
摘要:
A radio base station according to the present invention comprising a simulator device, including a downlink signal output unit configured to transmit a downlink signal for a first cell and transmit a downlink signal for a second cell, in the form of a simulation signal, to a mobile station, in which the downlink signal output unit is configured to shift the lead position of a radio frame from which to transmit the downlink signal for a first cell, and the lead position of a radio frame from which to transmit the downlink signal for a second cell.
摘要:
A user apparatus transmits an uplink control signal to a base station apparatus using a single carrier scheme. The user apparatus includes: a unit configured to prepare acknowledgement information indicating positive acknowledgement or negative acknowledgement for a downlink data signal based on a result of demodulation of the downlink data signal; a unit configured to prepare channel state information indicating reception quality of a downlink reference signal; a unit configured to channel-code multiplexed control information in which the acknowledgement information and the channel state information are multiplexed to prepare the uplink control signal; and a unit configured to transmit the uplink control signal using dedicated resources different from resources for an uplink data signal.
摘要:
The present invention is designed to perform CQI measurement for adjacent cells without making the processes in the user terminal UE complex. A base station apparatus (eNodeB #1) provided in the serving cell has features of acquiring, from a base station apparatus (eNodeB #2) provided in an adjacent cell, the cell ID of the adjacent cell, and the position and transmission power of the CSI-RS, as parameters related to the CSI-RS of the adjacent cell, generating a broadcast signal including the above parameters related to the CSI-RS, and transmitting the generated signal to the user terminal (UE).
摘要:
A radio base station (eNB) according to the present invention includes: a determination unit (14) configured to determine an assignable OFDM symbol number indicating the number of OFDM symbols in each subcarrier assignable to a control channel in a downlink, in each subframe configured by a predetermined number of OFDM symbols, wherein the determination unit (14) is configured to calculate an OFDM symbol number corresponding to a communication status, in each subframe within a measurement interval, and to set a maximum number of the calculated OFDM symbol numbers to the assignable OFDM symbol number in each subframe within a next control interval that starts after completion of the measurement interval.
摘要:
A radio base station includes a power estimate unit configured to estimate a transmission power of an uplink signal in a mobile station (UE), a transmission format determination unit configured to determine a transmission bandwidth and a transmission frequency of the uplink signal as a transmission format of the uplink signal transmitted by the mobile station (UE), and a transmission instruction unit configured to instruct the mobile station (UE) to transmit the uplink signal by using the determined transmission format. The transmission format determination unit is configured to determine the transmission bandwidth of the uplink signal based on an estimation value of the transmission power, and to determine the transmission frequency of the uplink signal based on information relating to a cell with which the mobile station communicates.
摘要:
A base station includes a first target receiving power calculation unit that calculates first target receiving power for controlling transmission power based on a path loss and a first parameter used by the user equipment transmitting user data in a predetermined sub-frame through an uplink shared channel to control the transmission power, a difference calculation unit that calculates, based on the path loss, a difference between the first target receiving power and second target receiving power used by the user equipment transmitting the user data through the uplink shared channel at every constant interval to control the transmission power, a second parameter calculation unit that calculates a second parameter by subtracting the difference from the first parameter, and a notification unit that reports the second parameter. The first target receiving power calculation unit calculates the first target receiving power to be greater as the path loss becomes smaller.
摘要:
A radio base station (eNB) according to the present invention includes: a management unit (11) configured to manage the number of mobile stations UE corresponding to each carrier; and a scheduling unit (12) configured to perform a scheduling processing to a scheduling-target mobile station (UE#A), in which the “CA” is set to be performed, in at least one of a primary carrier (carrier #1) and a secondary carrier (carrier #2) of the mobile station UE#A based on the number of mobile stations UE corresponding to each carrier.
摘要:
To avoid a reduction in a peak rate in an uplink as much as possible. A radio base station eNB according to the present invention includes a scheduling unit 12 configured to assign a PUCCH resource, a PUSCH resource, and a PRACH resource to a mobile station UE in a cell subordinate to the radio base station eNB, wherein, when the number of mobile stations UEs in the cell is 1, the scheduling unit 12 is configured to use at least one of the PUCCH resource and the PRACH resource as the PUSCH resource.
摘要:
A radio base station eNB according to the present invention includes: a transmission format determination unit 13 configured to determine a transmission format of an uplink data signal where HARQ is performed; a frequency resource determination unit 14 configured to determine a frequency resource of the uplink data signal; a transmission instruction unit 15 configured to instruct new transmission and retransmission of the uplink data signal via PDCCH; and a transmission acknowledgement information transmission unit 12 configured to transmit transmission acknowledgement information of the uplink data signal via PHICH, wherein the transmission acknowledgement information transmission unit 12 always transmits, when a subframe bundling is applied to the uplink data signal, ACK as the transmission acknowledgement information.