Abstract: A base station (10-1) includes a radio signal processing unit (102) capable of using a first channel (CH4), a second channel (CH3), and a third channel (CH2). The radio signal processing unit is configured to perform signaling with a second other base station (10-3) using the second channel while performing signaling with a first other base station (10-4) using the first channel when the radio signal processing unit acquires transmission rights of the first channel, the second channel, and the third channel, and execute cooperative processing with at least one of the first other base station and the second other base station on the basis of a result of the signaling.

Abstract: A base station of an embodiment includes first and second wireless signal processing units and a link management unit. The link management unit establishes a multi-link with a terminal apparatus by using the first and second wireless signal processing units, and sets a primary link used as a main and a secondary link used as an auxiliary during the multi-link. The link management unit transmits a first wireless frame requesting a change of the primary link to the terminal apparatus by using the first wireless signal processing unit set to the primary link, and the link management unit changes the primary link from the first wireless signal processing unit to the second wireless signal processing unit if either the first or second wireless signal processor receives the affirmative response from the terminal apparatus after the first wireless frame is transmitted.

Abstract: A determination method of determining an installation position of a movable base station and a connection destination base station, executed by an information processing device including a memory and a processor, includes: determining a mesh in which the movable base station can be installed, and a base station to which the movable base station can be connected in the mesh, based on a reception strength of a radio signal from each of one or more base stations in each of one or more meshes.

Abstract: A reflection direction control method includes an arrival direction estimation step of estimating an arrival direction of radio waves transmitted by a wireless terminal to one or more reflection units each including a plurality of reflection elements capable of dynamically changing phase characteristics when the radio wave is reflected, a phase control step of controlling a phase of a radio wave reflected by each of the plurality of reflection elements so that the reflection unit reflects, in a predetermined direction, the radio wave transmitted from the estimated arrival direction, and a switching step of switching between an antenna mode in which the reflection unit is caused to receive the radio wave of which the arrival direction is estimated and a reflection mode in which the reflection unit is caused to reflect the radio wave.

Abstract: A relay system includes: one or more radiation units configured to form a beam in a predetermined direction by radiating radio waves from each of a plurality of elements; a detection unit configured to detect a physical environment on a radio wave propagation path that affects the beam formed by the radiation unit; a direction determination unit configured to determine a direction in which the radiation unit should form the beam based on the physical environment detected by the detection unit; a phase calculation unit configured to calculate a phase of radio wave to be radiated by each of the plurality of elements such that the radiation unit forms a beam in the direction determined by the direction determination unit; and a phase control unit configured to control the phase of the radio wave radiated by each of the plurality of elements based on the phase calculated.

Abstract: The reflection direction control system includes a plurality of reflection units each including a plurality of reflection elements, a position estimation unit for estimating a position of each of the wireless terminals on the basis of radio waves transmitted to the plurality of reflection parts wireless terminals, a direction estimation unit for estimating an incident direction of the radio waves transmitted by each of the wireless terminals to the reflection units, a phase calculation unit for calculating a phase of the radio waves to be reflected so that the reflection unit reflects the radio waves made incident in the direction estimated by the direction estimation unit in a predetermined direction, and a phase control unit for controlling the phase of the radio waves reflected by each of the plurality of reflection elements on the basis of the phase calculated by the phase calculation unit.

Abstract: A reflection direction control system includes a reflection unit including a plurality of reflection elements, a direction estimation unit that estimates an incident direction of a radio wave transmitted by a base station to the reflection unit on the basis of base station position information indicating a preset position of the base station, a phase calculation unit that calculates a phase of the radio wave to be reflected by each of the plurality of reflection elements so that the reflection unit reflects the radio waves transmitted by the base station toward the wireless terminal on the basis of the position information of the wireless terminal received from the wireless terminal, and a phase control unit that controls the phase of the radio wave reflected by each of the plurality of reflection elements on the basis of the phase calculated phase calculation unit.

Abstract: A base station of an embodiment includes first and second wireless signal processing units, and a link management unit. The first wireless signal processing unit is configured to transmit and receive a wireless signal using a first channel. The second wireless signal processing unit is configured to transmit and receive a wireless signal using a second channel that is different from the first channel. The link management unit stores shared time information synchronizing multi-links. The link management unit establishes a multi-link with a terminal apparatus using the first and second wireless signal processing units, and causes each of the first and second wireless signal processing units to transmit a beacon signal including the shared time information while the multi-link is established.

Abstract: A base station of the embodiment includes first and second wireless signal processing units and a link management unit. The first and second wireless signal processing units are configured to transmit and receive wireless signals using first and second channels, respectively. The link management unit establishes a multi-link with a terminal apparatus using the first and second wireless signal processing units, sets the first wireless signal processing unit as a primary link, and sets the second wireless signal processing unit to a secondary link. When the secondary link is in an active mode and a first condition is satisfied, the link management unit sets the secondary link to the operation pause mode. When the secondary link is in an operation pause mode and a second condition is satisfied, the link management unit sets the secondary link to the active mode.

Abstract: A radio signal strength information calculation method performed by a control apparatus includes: a generation step of calculating radio information regarding each of a plurality of meshes into which an area where base stations are placed is divided and generating mesh radio information; and a calculation step of placing a virtual base station at a position to where any of the base stations would be moved in the area, and calculating radio signal strength information between a plurality of base stations including the base stations and the virtual base station based on the mesh radio information.

Abstract: A method of determining a location at which a movable base station is to be installed is provided. In the method, an information processing device performs first determination processing of determining a base station providing radio communication that does not satisfy a predetermined condition based on information of a radio signal of each base station, second determination processing of determining a number of virtual terminals to be set in a coverage area of the base station providing the radio communication that does not satisfy the predetermined condition based on the information of the radio signal of the base station, and third determination processing of determining the location at which the movable base station is to be installed based on a location of each virtual terminal set in the coverage area of the base station providing the radio communication that does not satisfy the predetermined condition.

Abstract: A radio communication apparatus according to an embodiment includes a radio communication unit (1011), a radio information acquisition unit (1013), and a transmission condition setting unit (104). The radio communication unit transmits a radio signal. The radio information acquisition unit continuously acquires radio information containing received signal strength in the radio communication unit. The transmission condition setting unit sets a transmission time slot for transmitting the radio signal in the radio communication unit and an index value of a modulation and error correction coding rate in the radio communication unit in accordance with the radio information.

Abstract: A radio communication apparatus according to an embodiment includes a first radio communication unit (1011) that transmits a radio signal by using a first channel, a second radio communication unit (1021) that transmits a radio signal by using a second channel different from the first channel, a first radio information acquisition unit (1013) that acquires first radio information containing received signal strength in the first radio communication unit and usage of the first channel, a second radio information acquisition unit (1023) that acquires second radio information containing received signal strength in the second radio communication unit and usage of the second channel, a determination unit (104) that determines whether to switch between the first radio communication unit and the second radio communication unit in accordance with the first radio information and the second radio information, and a switching unit (105) that switches between the first radio communication unit and the second radio communi

Abstract: A base station (10) of an embodiment includes a first wireless signal processing unit, a second wireless signal processing unit, and a link management unit (120). The first wireless signal processing unit is configured to be able to transmit and receive wireless signals using the first band. The second wireless signal processing unit is configured to be able to transmit and receive wireless signals using a second band that is different from the first band. The link management unit manages a link state of the first wireless signal processing unit and a link state of the second wireless signal processing unit.

Abstract: A base station (20A) that, in a base station system (1) including a first base station (10) and at least two second base stations (20A, 20B), functions as the first base station (10), includes: a MAC processing unit (103) that performs MAC layer processing and generates a first MAC frame used in common between the first base station (10) and the second base station (20A); and a communication processing unit (105A) that transmits the first MAC frame to the second base station (20A).

Abstract: A base station (10) of an embodiment includes a first wireless signal processing unit (140), a second wireless signal processing unit (150), and a link management unit (120). The first wireless signal processing unit is configured to be able to transmit and receive wireless signals using the first channel. The second wireless signal processing unit is configured to be able to transmit and receive wireless signals using a second channel that is different from the first channel. The link management unit manages a link state of the first wireless signal processing unit and a link state of the second wireless signal processing unit.

Abstract: In a wireless communication system including a plurality of base stations to which one or more terminal stations are connectable, and a base station control device which controls each of the base stations, the base station control device includes an information collection unit configured to collect connection information regarding the terminal stations connected to the base stations from each of the base stations, a list generation unit configured to generate a white list indicating the terminal stations which are allowed to be connected to the base stations for each of the base stations based on the connection information, and a transmission unit configured to transmit the white list generated by the list generation unit to each of the base stations, and each of the base stations includes a reception unit configured to receive the white list transmitted by the transmission unit, and a setting unit configured to perform setting so as to allow or inhibit connection of each of the terminal stations to the base

Abstract: A wireless communication system includes a wireless base station that performs wireless communication with a wireless terminal; and a wireless communication control station that is communicably connected to the wireless base station. The wireless communication control station includes a determination unit that determines a requirement that is prioritized among multiple types of requirements in wireless communication, a setting unit that sets the information indicating the parameter to be used for communication control by the wireless base station, and a transmission unit that transmits the information set by the setting unit to the wireless base station.

Abstract: A base station serving as a second base station includes a wireless signal processing unit capable of using a first channel held in common with another base station serving as a first base station. The wireless signal processing unit is configured to execute first cooperative processing in a case of the first base station acquiring a transmission right for the first channel that is a primary channel. The first cooperative processing includes, on the basis of the second base station acquiring a transmission right for a second channel that is a secondary channel of the second base station, deciding to transmit by the second channel.

Abstract: In a wireless communication system including a plurality of base stations to which terminal stations are connectable, and a monitoring station which monitors each of the base stations, the monitoring station includes an information collection unit configured to collect wireless environment information including a plurality of information items indicating wireless environments around the base stations and the terminal stations, from each of the base stations, a defect detection unit configured to detect whether or not one or more defects occur based on a combination of the information items, and a defect determination unit configured to determine estimated occurrence probabilities of the defects detected by the defect detection unit based on a combination of the information items.