Patent application number | Description | Published |
20110053647 | BASE STATION DEVICE, COMMUNICATION SYSTEM, AND CONTROL METHOD OF TILT ANGLE OF ANTENNA - A base station device includes a first antenna which transmits a radio signal in a downlink, a second antenna which receives a radio signal in an uplink, and a tilt angle control unit which controls a tilt angle of the first antenna and the second antenna to decrease a difference in a position of a cell boundary of the downlink and a position of the cell boundary of the uplink based on a communication quality of the downlink and a communication quality of the uplink with respect to a first base station device and on the communication quality of a downlink and a communication quality of the uplink with respect to an adjacent second base station device. | 03-03-2011 |
20110287771 | BASE STATION AND RADIO PARAMETER-ADJUSTMENT METHOD - A base station forming a cell based on a value of a radio parameter includes a reception unit configured to receive a signal transmitted from a mobile terminal communicating with the base station, and a processor configured to adjust a value of a radio parameter of the base station based on first and second reception qualities of the mobile terminal, where the first reception quality is a value of a reception quality of a transmission signal of the base station and the second reception quality is a value of a reception quality of a transmission signal of another base station. | 11-24-2011 |
20120190396 | RADIO BASE STATION AND ANTENNA WEIGHT SETTING METHOD - A radio base station which includes an antenna and adjusts directivity of a radio wave to be transmitted and received by antenna weight of the antenna, the radio base station includes a receiver which receives a first reference signal from a first mobile terminal and a second reference signal from a second mobile terminal and a processer which produces antenna weight which is based on the first and the second reference signals, to the antenna for sending a common data to the first and the second mobile terminals. | 07-26-2012 |
20130005390 | RADIO BASE STATION AND METHOD OF ADJUSTING RADIO PARAMETER - A radio base station controls an antenna by adjusting a radio parameter value of the radio base station, and notifies another radio base station of the adjustment of the radio parameter value. The radio base station receives information from the other radio base station. The information relates to an influence on a radio characteristic of a cell formed by the other radio base station. The radio characteristic is influenced by the adjustment of the radio parameter of the radio base station. The radio base station readjusts the radio parameter value of the radio base station based on the information. The information relates to the influence on the radio characteristic of the cell formed by the other radio base station. | 01-03-2013 |
20140295863 | COMMUNICATIONS APPARATUS, MOBILE COMMUNICATIONS APPARATUS, COMMUNICATIONS SYSTEM, AND COMMUNICATION METHOD - A communications apparatus includes a processor configured to identify positions where wireless communication with a mobile communications apparatus is possible, the positions being included in a coverage area of the communications apparatus; and obtain from a database that is inaccessible to the mobile communications apparatus, frequency information that indicates frequencies that can be used for the wireless communication at the identified positions; and an announcing unit configured to announce in the coverage area and by a radio signal, correspondence information that is based on the frequency information obtained by the obtaining unit and that correlates the positions and the frequencies that can be used. | 10-02-2014 |
20150282182 | COMMUNICATIONS SYSTEM, COMMUNICATIONS CONTROL APPARATUS, RADIO COMMUNICATIONS APPARATUS, AND COMMUNICATIONS METHOD - A radio communications apparatus transmits to a communications control apparatus, route information indicating a position and a predicted route of the radio communications apparatus. For each frequency available to the radio communications apparatus at the position of the radio communications apparatus, the communications control apparatus calculates a predicted time for the frequency to become unavailable to the radio communications apparatus, based on the route information and correspondence information of the position of the radio communications apparatus and the frequencies available to the radio communications apparatus; selects a frequency from among the frequencies available to the radio communications apparatus at the position of the radio communications apparatus, based on the calculated predicted time; and transmits to the radio communications apparatus, frequency information indicating the selected frequency. The radio communications apparatus performs radio communication using the frequency indicated by the frequency information transmitted from the communications control apparatus. | 10-01-2015 |
20160113022 | CONTROL DEVICE AND CONTROL METHOD - A control device includes a calculating unit and a specifying unit. The calculating unit calculates an estimated interference area of a base station to be installed for a secondary system, based on an installation scheduled position of the base station to be installed, an installation position of a reference base station of the secondary system, and an actually-measured interference area of the reference base station. The specifying unit specifies a channel of a primary system for which a used area does not overlap with the calculated estimated interference area. | 04-21-2016 |
20160127987 | BASE STATION AND CELL SELECTION METHOD - A base station includes a receiving unit that receives a report of a reception power from a user equipment, and a selecting unit that calculates a first throughput and a second throughput by using the reception power, the first throughput being a throughput when coordinated communication is not performed and a single user equipment occupies an entire band, the second throughput being a throughput when the coordinated communication is performed and the single user equipment occupies the entire band, and selects a coordination candidate cell based on the first throughput, the second throughput, a first resource allocation rate and a second resource allocation rate, the first resource allocation rate being a resource allocation rate when the coordinated communication is not performed, the second resource allocation rate being a resource allocation rate when the coordinated communication is performed. | 05-05-2016 |