Abstract: A wireless communication system includes: a first wireless terminal capable of communicating through both a first communication scheme using a first frequency band and a second communication scheme using a second frequency band higher than the first frequency band; a second wireless terminal that is compatible with communication through the first communication scheme and is not compatible with communication through the second communication scheme; and a multi-link compatible base station that accommodates the first wireless terminal and the second wireless terminal. A contention window value during transmission in communication between the base station and the first wireless terminal through the first communication scheme is set to a value greater than a predetermined value that is a contention window value during transmission in communication between the base station and the second wireless terminal through the first communication scheme.

Abstract: A wireless communication system according to one embodiment is a wireless communication system including: one or more wireless terminals capable of communicating by both a first communication scheme using a first frequency band and a second communication scheme using a second frequency band, which is higher than the first frequency band; and a multi-device compatible base station that accommodates the wireless terminals, and the wireless communication system includes: number-of-times measurement circuitry configured to measure the number of retries for attempting communication by the second communication scheme; and a controller to perform control such that the base station performs wireless communication by the first communication scheme without using the second communication scheme until a predetermined time elapses with respect to a wireless terminal in which the number of times measured by the number-of-times measurement circuitry exceed a predetermined number of times.

Abstract: The wireless communication system includes a plurality of wireless terminals each including a plurality of wireless interfaces corresponding to a plurality of channels in different frequency bands, and a wireless base station device that establishes wireless communication with the wireless terminals. Each of the wireless terminals performs channel sensing, and transmits sensing information including an identifier of a sensed channel, a sensing result of the channel, and an identifier of the wireless terminal. The wireless base station device calculates and stores the number of sensing channels for each of the wireless terminals on the basis of the sensing information, the number of sensing channels being the number of channels sensed by the wireless terminal, and allocates a reward according to the number of sensing channels to each of the plurality of wireless terminals.

Abstract: A frequency state observation system according to an embodiment includes a spectrum observation device that observes a spectrum of a frequency range that can be used by a plurality of wireless communication systems, a control device that controls the spectrum observation device to perform a plurality of single sweeps over the frequency range, and a wireless communication device that transmits, by a radio signal, information indicating a frequency of occurrence of a signal having a predetermined threshold or more included in a spectrum observed by the spectrum observation device performing a plurality of single sweeps, with respect to a predetermined time.

Abstract: The wireless communication system includes a wireless terminal and a control unit. The wireless terminal includes a plurality of wireless modules that respectively perform wireless communication with a plurality of base stations on different channels. The wireless terminal uses one of the plurality of wireless modules as a use module, and stops data transmission from wireless modules other than the use module. The control unit performs switching of the use module in the wireless terminal such that a transmission time rate of each of the plurality of wireless modules does not exceed a predetermined upper limit.

Abstract: A network includes: a first link between a first STA as a repeater and a first AP as a parent device; and a second link between a second STA as a child device and the first STA. A first transmission time is set during which transmission is permitted to the first link based on a first amount of transmission. A second transmission time is set during which transmission is permitted to the second link based on a second amount of transmission. An entire transmission cycle is determined based on the first transmission time and the second transmission time. A first transmission period and a second transmission period do not overlap in the entire transmission cycle. Wireless communication performed on the first link is limited within the first transmission period. Wireless communication performed on the second link is limited within the second transmission period.

Abstract: In a wireless communication method between a base station and a plurality of wireless terminals, the base station includes a plurality of first wireless modules that perform wireless communication using different channels that do not overlap each other, and each of the plurality of wireless terminals includes a second wireless module that performs wireless communication using any one communication channel. The wireless communication method includes executing a channel switching process of switching use states of the plurality of first wireless modules according to a predetermined schedule so as to enable any one of the plurality of first wireless modules to carry out transmission and to prohibit the other thereof from carrying out transmission. Further, there is a sleeping of an operation of the second wireless module while the first wireless module that performs wireless communication using the communication channel is prohibited from carrying out transmission.

Abstract: A wireless communication system includes a plurality of wireless communication apparatuses forming a wireless communication network. The system also includes one or a plurality of control apparatuses that controls the plurality of wireless communication apparatuses. Each of the plurality of wireless communication apparatuses includes a plurality of network interface controllers (NICs) that performs wireless communication through different channels that do not overlap each other. The control apparatus executes channel switching processing of switching a use state of the plurality of NICs in each wireless communication apparatus. The control apparatus controls the plurality of wireless communication apparatuses to use NICs of the same channel in the same period. The control apparatus controls to share connection information regarding each of the plurality of NICs in advance before the channel switching processing.

Abstract: A wireless communication system includes a plurality of wireless communication apparatuses that constitutes a wireless communication network and one or a plurality of control apparatuses that controls the plurality of wireless communication apparatuses. The plurality of wireless communication apparatuses includes a base station, a first wireless terminal, and a second wireless terminal. Each of the base station and the first wireless terminal includes N (N is an integer of two or more) network interface controllers (NICs), and the second wireless terminal includes M (M<N) NICs. The control apparatus executes channel switching processing of switching a use state of the N NICs in the base station and the first wireless terminal. The control apparatus controls the base station and the first wireless terminal to use NICs of the same channel in the same period.

Abstract: There are provided a plurality of radio devices detecting an interference source signal transmitted by an interference source and generating pieces of air time information showing whether the interference source signal exists or not for each predetermined time unit; and an aggregation device estimating air time of the interference source by acquiring the pieces of air time information from the plurality of radio devices and aggregating/integrating the acquired pieces of air time information for each predetermined unit time, matching timings.

Abstract: The interference control system provides a control device disposed in a public network with a resource application based on a message issued regarding use of a wireless resource by an interfering device disposed in a carrier network. A response based on a message issued by the control device in response to the resource application is provided to the interfering device that has issued the resource application. A repeater estimates, on the basis of interfered-with device information, an increase amount in the total amount of interference caused in each of used frequency channels of the interfered-with device in a case where the interfering device performs transmission in each of frequency channels with a prescribed transmission power. An estimation result of the increase amount is reflected in at least one of the resource application from the interfering device and the response to the interfering device.

Abstract: A predetermined radio base station and subordinate radio terminals detect signals (beacons) regularly transmitted by other radio base stations, transmit information about radio channels and base station identifiers of the detected signals, and position information about the radio terminals to an interference area detection device to aggregate the information and the position information as a base station-base station detection list and a terminal-base station detection list.

Abstract: A format that includes a BSSID of a transmitting station within a preamble of the frame is an HE format, and a format that does not include a BSSID within the preamble but includes a BSSID in a MAC header is a Non-HE format; and a wireless station in the BSS includes a control part which checks a format of a frame received at a predetermined receiver sensitivity or above, and continues demodulation of the received frame if the format is HE format and the BSSID in the received frame is consistent with its own BSS, and stops the demodulation of the received frame if the HE format and the BSSID in the received frame is not consistent with its own BSS.

Abstract: A plurality of access points configured to communicate with a subordinate wireless LAN terminal, an information collecting device configured to collect a frame respectively transmitted and received between the plurality of access points and the wireless LAN terminal, and extract information on communication quality of an access point of the plurality of access points from a header of the frame, and an information collecting server configured to acquire the information on the communication quality of the access point from the information collecting device, analyze the information to determine whether the communication quality is good or bad for each of the plurality of access points, and execute processing of externally displaying or notifying a result that is determined are included.

Abstract: There are provided a plurality of radio devices detecting an interference source signal transmitted by an interference source and generating pieces of air time information showing whether the interference source signal exists or not for each predetermined time unit; and an aggregation device estimating air time of the interference source by acquiring the pieces of air time information from the plurality of radio devices and aggregating/integrating the acquired pieces of air time information for each predetermined unit time, matching timings.

Abstract: Provided is an interference control system for wireless communication suitable for limiting the total amount of interference given to an interfered device to be protected by a large number of interfering devices. The system provides a control device disposed in a public network with a resource application based on a message issued regarding use of a radio resource by an interfering device disposed in a carrier network. A response based on a message issued by the control device with respect to the resource application is provided to the interfering device that has issued the resource application. A resource table including information in which availability of frequency in carrier network is estimated is updated on the basis of the resource application and the response. The information in which the availability is estimated and included in the resource table is reflected in the resource application.

Abstract: Provided is an interference control system for wireless communication suitable for limiting the total amount of interference to which an interfered-with wireless communicator to be protected is subjected by interfering wireless communicators. A repeater disposed between the interfering wireless communicator and a controller includes a processor and a memory storing a program executed by the processor. The processor acquires registration information including a position and a transmission power for each interfering wireless communicator, and estimates, for each interfering wireless communicator, a terminal range in which there is a likelihood that a terminal wireless communicator communicating with the interfering wireless communicator is present based on the position and the transmission power. The processor transmits a registration application including the terminal range to the control device.

Abstract: Provided is an interference control system for wireless communication suitable for limiting the total amount of interference given to an interfered device to be protected by a large number of interfering devices. An interference control system includes a subscriber database that stores information regarding a position of each interfering device. A registration application (5) including an ID of an interfering device disposed in a carrier network is received from the interfering device. The registration application is received and position information that matches information stored in the subscriber database regarding the ID is set (2), (3), and (6). The position information is transmitted to the control device for registration (6).

Abstract: A format that includes a BSSID of a transmitting station within a preamble of the frame is an HE format, and a format that does not include a BSSID within the preamble but includes a BSSID in a MAC header is a Non-HE format; and a wireless station in the BSS includes a control part which checks a format of a frame received at a predetermined receiver sensitivity or above, and continues demodulation of the received frame if the format is HE format and the BSSID in the received frame is consistent with its own BSS, and stops the demodulation of the received frame if the HE format and the BSSID in the received frame is not consistent with its own BSS.

Abstract: A wireless base station and a first wireless terminal include means for collecting first wireless performance information regarding wireless communication in both a downstream direction and an upstream direction and transmitting the first wireless performance information to a wireless performance measurement device. The wireless base station and a second wireless terminal include means for collecting second wireless performance information regarding wireless communication in both the downstream direction and the upstream direction and transmitting the second wireless performance information to the wireless performance measurement device.