Abstract: A position estimation apparatus estimates the position of a radio communication device that outputs a signal, where the apparatus includes a distance estimating section, a difference summing section, and a minimum difference candidate point determining section, where the distance estimating section estimates actual distances between wireless access points that receive the signal and the radio communication device as estimated distances based on the reception strength of the signal, where the difference summing section sums values based on differences between the distances between candidate points for the position of the radio communication device and the wireless access points and the estimated distances, where the minimum difference candidate point determining section determines a minimum difference candidate point, and where the position of the minimum difference candidate point is estimated as the position of the radio communication device.

Abstract: A position estimation apparatus estimates the position of a radio communication device that outputs a signal, where the apparatus includes a distance estimating section, a first position estimating section, a second position estimating section, and a final position estimating section, where the distance estimating section estimates actual distances between wireless access points receiving the signal and the radio communication device as estimated distances based on the reception strength of the signal, where the first position estimating section estimates the position of the radio communication device, where the second position estimating section estimates a circle centered at one of the wireless access points with the maximum reception strength, and where the position estimated by the final position estimating section is estimated as the position of the radio communication device.

Abstract: Systems, devices, and methods for two or more access points (APs), where each AP comprises: at least one LAN port for connection to the wired network; at least one LAN port for connection between at least one other AP; a processor having addressable memory, where the processor of a first AP of the two or more APs is configured to: select the first AP of the two or more APs as a primary AP; select the second AP of the two or more APs as a back-up AP; detect, via a trigger, a failure of the primary AP; and configure the second AP as the primary AP and the first AP as the back-up AP if the failure of the first AP is detected.

Abstract: There is provided an information processing system including a relative-position estimation processing unit configured to estimate a relative position between an access point and a wireless client by using a cooperative position estimation method using distance information based on a signal strength between the access point and the wireless client; and an inside/outside determination processing unit configured to determine an inside/outside positional relationship between a polygonal target area formed by access points and the wireless client, in which the inside/outside determination processing unit determines whether the wireless client is present inside or outside the target area by determining a direction of vector product of the access points forming a side of the target area and a direction of vector product of the wireless client and the access point as a vertex of the polygonal area.

Abstract: Systems, devices, and methods for one or more hybrid access points, each hybrid access point comprising: an Ethernet port connecting the hybrid access point to one or more connected devices, where the Ethernet port is associated with an Ethernet-based media access control (MAC) address; one or more physical radios configured to transmit and receive wireless signals between the hybrid access point and one or more user devices; one or more virtual access points (VAPs) configured by the one or more physical radios, where the one or more VAPs comprise: at least one VAP configured to utilize a MAC layer of a multi-channel architecture (MCA); and at least one VAP configured to utilize a MAC layer of a channel blanket single-channel architecture (SCA); and a bridge connecting each VAP to the hybrid access point Ethernet port via the Ethernet-based MAC address.

Abstract: A purpose is to provide a monitoring system to monitor whether there is a substance to be monitored in the air, and a detecting device used in the monitoring system. The monitoring system includes a detecting device, an analyzing device, and an abnormality notification system. The detecting device determines whether the air is in an abnormal state on the basis of an output signal from an abnormality detection sensor, pours liquid to be inspected, into which the air is sucked and liquefied, into a previously-installed reagent container when determining the abnormal state, generates mixed liquid in which a reactant in the reagent container and the poured liquid to be inspected are mixed, and drops the generated mixed liquid to an electrode of the analyzing device.

Abstract: According to the present disclosure, a wireless communication device wirelessly communicates with mesh portals in conformity with the IEEE 802.11s standard. The wireless communication device includes a MAC address receiving section, a MAC address recording section, an IP address inquiring section, and an IP address recording section. The MAC address receiving section receives the MAC addresses of the mesh portals from the mesh portals. The MAC address recording section records the received MAC addresses in correspondence to metrics between the mesh portals and the wireless communication device. The IP address inquiring section preferentially requests an IP address from one of the mesh portals having a MAC address corresponding to a smaller one of the metrics based on contents recorded by the MAC address recording section. The IP address recording section records the IP address transmitted from the mesh portal as a result of the request.

Abstract: To provide an access control system for performing access control, etc., in a case of detecting irregular behavior in a network, an access control system includes a message-obtainment-processing unit configured to obtain from an email server an email message including information for identifying a suspect-terminal that has conducted irregular behavior, the email message being generated in a security system located inside or outside a private network constituted by use of a software defined network (SDN) to be received by the email server. The message-obtainment-processing unit causes an SDN controller in the private network to provide, to the suspect-terminal or an edge network device that controls communication of the suspect-terminal, a control instruction based on the obtained email message, so as to cause the suspect-terminal or the edge network device to execute a process for access control against the suspect-terminal.

Abstract: An access point control device controls a plurality of proximal wireless LAN access points arranged in proximity to each other and communicating with a communication terminal in a wireless LAN having an access point group of the proximal wireless LAN access points. The access point control device includes an identification information recording section and a terminal communication instructing section. The identification information recording section records identification information of the proximal wireless LAN access points. The terminal communication instructing section, based on records in the identification information recording section, instructs one or more of the proximal wireless LAN access points to stop communicating with the communication terminal and instructs the proximal wireless LAN access points other than the proximal wireless LAN access points instructed to stop communicating with the communication terminal to communicate with the communication terminal.

Abstract: An SDN controller used in a network constructed with an SDN, the SDN controller causes a computer to function as an address information specifying processing unit which specifies, based on a global address of an illegal attack server received from a threat detection system, communication with the received global address among communication in the network, and specifies a local address of a communication partner of the global address in the specified communication, a terminal identification information specifying processing unit which specifies terminal identification information on a client terminal to which the specified local address is assigned, and a security processing unit which passes to an edge network device, based on the specified terminal identification information, a control instruction to perform predetermined control processing to communication of the client terminal.

Abstract: Provided is an information processing system that identifies communication terminal identification information of a portable communication terminal used by a user when the user uses communication through an access point.

Abstract: A communication terminal identification information identifying processing system includes a person recognition processing unit that performs person recognition processing based on image information obtained by capturing a wireless LAN communication spot by a capturing device, a communication terminal identification information acquisition processing unit that acquires communication terminal identification information, a communication terminal identification information storage unit that stores, for each person, candidate communication terminal identification information of the portable communication terminal used by the person, a communication terminal identification information comparison processing unit that compares the candidate communication terminal identification information of the portable communication terminal stored in the communication terminal identification information storage unit and the communication terminal identification information acquired in the communication terminal identification in

Abstract: According to the present invention, a network device having a plurality of ports, includes a linkup detection unit, a loop detection unit, and a communication shutoff unit. The linkup detection unit detects a linkup of the each port. The loop detection unit detects a loop formed by the network device. The communication shutoff unit shuts off communication on a port on which the linkup was detected at a later time point if the loop is detected.

Abstract: A wireless LAN control device connected to a plurality of wireless LAN access points includes a transmission access point specification unit, and a reception access point specification unit. The a transmission access point specification unit specifies one of the plurality of wireless LAN access points as a transmission wireless LAN access point that transmits a signal. The reception access point specification unit specifies all the wireless LAN access points other than the transmission wireless LAN access point out of the plurality of wireless LAN access points as reception wireless LAN access points that start waiting for reception of the signal responsive to a time point of the transmission. When at least one of the reception wireless LAN access points has received the signal, the at least one of the reception wireless LAN access points is determined to neighbor the transmission wireless LAN access point.

Abstract: According to the present disclosure, a wireless communication device wirelessly communicates with mesh portals in conformity with the IEEE 802.11s standard. The wireless communication device includes a MAC address receiving section, a MAC address recording section, an IP address inquiring section, and an IP address recording section. The MAC address receiving section receives the MAC addresses of the mesh portals from the mesh portals. The MAC address recording section records the received MAC addresses in correspondence to metrics between the mesh portals and the wireless communication device. The IP address inquiring section preferentially requests an IP address from one of the mesh portals having a MAC address corresponding to a smaller one of the metrics based on contents recorded by the MAC address recording section. The IP address recording section records the IP address transmitted from the mesh portal as a result of the request.

Abstract: An access point control device controls a plurality of proximal wireless LAN access points arranged in proximity to each other and communicating with a communication terminal in a wireless LAN having an access point group of the proximal wireless LAN access points. The access point control device includes an identification information recording section and a terminal communication instructing section. The identification information recording section records identification information of the proximal wireless LAN access points. The terminal communication instructing section, based on records in the identification information recording section, instructs one or more of the proximal wireless LAN access points to stop communicating with the communication terminal and instructs the proximal wireless LAN access points other than the proximal wireless LAN access points instructed to stop communicating with the communication terminal to communicate with the communication terminal.

Abstract: Objective is to provide a communication terminal identification information identifying processing system for identifying communication terminal identification information of a portable communication terminal used by a user when the user uses communication through an access point.

Abstract: According to the present invention, a network device includes a plurality of ports which are connected to a LAN; a communication controller; and a communication shutoff release unit. The communication controller includes: a linkup detection unit, a loop detection frame sending out unit that sends out the loop detection frame from a linkup detected port, which is a port for which the linkup is detected, after a predetermined period from a time point when the linkup is detected by the linkup detection unit to the local area network, and a loop detection frame detection unit that detects the loop detection frame if the loop detection frame is received on the each port. The communication shutoff release unit releases the shutoff of the communication on the linkup detected port only if the loop detection frame is not detected by the loop detection frame detection unit.

Abstract: There is provided a wireless communication control device and a wireless communication control method, which control the transmission power of radio waves of base stations appropriately to reduce interference between cells. The wireless communication control method according to the present invention is a method of controlling plural base stations in a wireless communication system in which the plural base stations cover a target area with radio waves of a first radio wave strength or more, the method causing a computer to execute: a step of acquiring a relative positional relationship of the plural base stations; a step of identifying a base station, located in the neighborhood of the boundary of the target area, from the relative positional relationship of the plural base stations; and a step of lowering the transmission power of radio waves of a base station other than the identified base station among the plural base stations.

Abstract: Provided is an information processing system that identifies communication terminal identification information of a portable communication terminal used by a user when the user uses communication through an access point.