Abstract: A radio access system including a plurality of radio apparatuses each configured to forma cell, and a radio control apparatus to control the plurality of radio apparatuses. The radio control apparatus includes a controller configured to execute processes including monitoring the plurality of radio apparatus, selecting, from within the plurality of radio apparatuses, a radio apparatus operating with a large zone cell mode to form a large zone cell being larger than the cell when a monitoring result satisfies a predetermined condition, and switching over the selected radio apparatus to the large zone cell mode.

Abstract: A radio access system including a plurality of radio apparatuses each configured to forma cell, and a radio control apparatus to control the plurality of radio apparatuses. The radio control apparatus includes a controller configured to execute processes including monitoring the plurality of radio apparatus, selecting, from within the plurality of radio apparatuses, a radio apparatus operating with a large zone cell mode to form a large zone cell being larger than the cell when a monitoring result satisfies a predetermined condition, and switching over the selected radio apparatus to the large zone cell mode.

Abstract: There is provided a base station device that performs communication with a mobile terminal, the base station device including: a handover operation part configured to perform a handover of the mobile terminal, based on an instruction from a base station control device; and a control part configured to issue a request for the handover of the mobile terminal, based on a moving speed and a moving direction of the mobile terminal, the request being issued to the base station control device.

Abstract: The base station apparatus includes a calculating unit configured to calculate a total communication throughput value for every cell by totalizing communication throughput in the selected cell of each mobile terminal on a cell-basis, a receiving unit configured to receive reception quality information of the selected cell and the reception quality information of another movement destination cell in the plurality of cells, a judging unit configured to judge whether or not the mobile terminal is in a cell switching zone by obtaining a difference between the reception quality information of the selected cell and of the movement destination cell, and a determining unit configured to determine, if the mobile terminal is judged to be in the cell switching zone, the cell switching to the movement destination cell as a newly selected cell by comparing the total communication throughput value of the selected cell with that of the movement destination cell.

Abstract: The base station apparatus includes a calculating unit configured to calculate a total communication throughput value for every cell by totalizing communication throughput in the selected cell of each mobile terminal on a cell-basis, a receiving unit configured to receive reception quality information of the selected cell and the reception quality information of another movement destination cell in the plurality of cells, a judging unit configured to judge whether or not the mobile terminal is in a cell switching zone by obtaining a difference between the reception quality information of the selected cell and of the movement destination cell, and a determining unit configured to determine, if the mobile terminal is judged to be in the cell switching zone, the cell switching to the movement destination cell as a newly selected cell by comparing the total communication throughput value of the selected cell with that of the movement destination cell.

Abstract: During interactive radio wave transmission between two radio devices, at least one of the radio devices transmits a radio wave containing power control information for controlling the transmission power of the radio wave transmitted from the other radio device according to the radio wave received from the other radio device. A radio communication controller comprises a generator that generates control information for causing each of the radio devices to simultaneously stop transmitting the radio wave and a transmitter that transmits the control information to each of the radio devices.

Abstract: The present invention relates to a transmission-power control assisting apparatus, a radio apparatus, and a radio terminal apparatus. In order to stably and highly maintain service quality, the transmission-power control assisting apparatus includes: a transmission quality monitoring section monitoring an error in transmission quality of any one of a plurality of radio channels on which transmission-power control is performed; a period determining section determining a predetermined period of time from a point in time of an opportunity to append a radio channel other than the specific radio channel to the plurality of radio channels; a desired-value setting section setting a desired value for the transmission power of the specific radio channel to a value larger than such a value as to suppress the error during the period of time; and a transmission-power update requesting section notifying the desired value to a transmitting end.

Abstract: The present invention relates to a transmission-power control assisting apparatus, a radio apparatus, and a radio terminal apparatus. In order to stably and highly maintain service quality, the transmission-power control assisting apparatus includes: a transmission quality monitoring section monitoring an error in transmission quality of any one of a plurality of radio channels on which transmission-power control is performed; a period determining section determining a predetermined period of time from a point in time of an opportunity to append a radio channel other than the specific radio channel to the plurality of radio channels; a desired-value setting section setting a desired value for the transmission power of the specific radio channel to a value larger than such a value as to suppress the error during the period of time; and a transmission-power update requesting section notifying the desired value to a transmitting end.