Abstract: A radio communication method of connecting a base station with a plurality of terminal stations, the base station including a plurality of radio communication units compatible with a predetermined communication standard, the method including collecting additional-line information including information regarding whether each terminal station is compatible with additional communication standard; collecting request information including a request in the predetermined communication standard of each terminal station; collecting identifier information that identifies each terminal station; calculating, based on the additional-line information, the request information and the identifier information that are collected, a setting policy including a setting for each radio communication unit, and a switching policy of setting a condition for switching the plurality of radio communication units; and setting, for each radio communication unit, the terminal station to be connected based on the setting policy and the switch

Abstract: A radio communication method of connecting a base station with a plurality of terminal stations, the base station including a plurality of radio communication units compatible with a plurality of communication standards or communication schemes, the method including collecting, from each of the plurality of terminal stations, communication quality information representing a communication quality of the terminal station, collecting, from each of the plurality of terminal stations, communication performance information representing a communication performance of the terminal station, collecting, from each of the plurality of terminal stations, identifier information that identifies the terminal station, calculating, based on the communication quality information, the communication performance information and the identifier information that are collected, a setting policy including a setting for each of the plurality of radio communication units, and a switching policy of setting a condition for switching the pl

Abstract: A radio base station device includes a plurality of radio units that perform communication with a radio terminal device, a packet data collection unit that collects packet data communicated by the plurality of radio units on the basis of a packet collection policy, a collected packet data analysis unit that performs analysis on packet data on the basis of a packet analysis policy, and transmits analysis result information to the control station device, and an information processing unit that transmits base station performance information and analysis result information to the control station device, and receives a packet collection policy and a packet analysis policy.

Abstract: A method includes collecting, as environment information, a radio environment represented by a signal received at a plurality of radio communication units from another base station, each of the plurality of radio communication units being switchable between a normal mode in which the radio communication unit performs radio communication as a base station and a subordinate mode in which the radio communication unit performs radio communication as a virtual terminal station, calculating test conduct information for each base station based on base station performance information representing a performance of each base station and the environment information, and conducting an operation test of each base station by, based on the test conduct information, setting any of the radio communication units to the normal mode, switching the radio communication units of the other base station to the subordinate mode, and performing radio communication with each other.

Abstract: A wireless communication method for connecting a base station with each of a plurality of terminal stations set to differ in Guard interval length, with the base station being equipped with a plurality of wireless communications units each configured to be connectable with one or more of the terminal stations, includes: a collection step of collecting information about the Guard interval length set for each of the terminal stations and connection information about the terminal stations; a policy calculation step of calculating a setting policy for setting the Guard interval length permitted for each of the wireless communications units and a switching policy for setting a condition for switching that one of the wireless communications units which is to be connected, for each of the terminal stations, based on each of the collected information about the Guard interval length and connection information about the terminal stations; and a setting step of setting those of the terminal stations which are to be conn

Abstract: A wireless communications method for connecting a base station with each of a plurality of terminal stations, the base station being equipped with a plurality of wireless communications units each configured to be able to selectively enable or disable an RTS/CTS function and a NoACK function and connectable with one or more of the terminal stations, includes: a collection step of collecting information as to whether each of the terminal stations is a hidden terminal and information about transmission characteristics of each of the terminal stations; a policy calculation step of calculating a setting policy for enabling or disabling the RTS/CTS function and the NoACK function for each of the wireless communications units and a switching policy for setting a condition for switching that one of the wireless communications units which is to be connected, for each of the terminal stations, based on the collected information; and a setting step of setting those of the terminal stations which are to be connected, fo

Abstract: A wireless communication system includes a plurality of wireless base stations and a measurement station, each wireless base station including a wireless communication unit, a wireless information collection unit, and a measurement result collection unit, the measurement station being configured to control the plurality of wireless base stations, wherein the measurement station generates a measurement condition based on wireless environment information collected by the wireless information collection unit of each wireless base station and notifies each wireless base station of a measurement control signal corresponding to the measurement condition, each wireless base station sends traffic addressed to a subordinate wireless terminal station or broadcast traffic at the same time in accordance with the notified measurement control signal, a measurement result collection unit of a wireless base station that is a measurement target measures wireless communication performance and notifies the measurement station o

Abstract: The invention of the present application provides a transmission parameter control method in a radio communication system that performs, between a radio base station and a plurality of radio terminal stations, communication of a first method in which reception confirmation is enabled and communication of a second method in which reception confirmation is not possible. The radio base station selects transmission parameters including a transmission rate in the communication of the second method with the radio terminal stations, based on radio communication information in the communication of the first method with the radio terminal stations.

Abstract: A wireless performance evaluation method for performing wireless performance evaluation of a wireless network including wireless base stations and wireless terminal stations includes: a step 1 of, before performing wireless performance evaluation operation based on wireless performance evaluation information generated from wireless performance evaluation conditions, determining whether an existing wireless performance evaluation result of wireless performance evaluation operation that has been performed is substitutable or not; and a step 2 of, if the existing wireless performance evaluation result is substitutable, skipping arithmetic processing corresponding to the wireless performance evaluation information and substituting the existing wireless performance evaluation result.

Abstract: There are provided a step 1 of, at a measurement point where a throughput of a wireless communication terminal under a new communication standard is to be acquired, measuring or calculating a wireless communication characteristic (throughput) of a wireless communication terminal under a current communication standard; a step 2 of acquiring parameters of a physical layer and a MAC layer at the time of measuring or calculating the wireless communication characteristic of the wireless communication terminal under the current communication standard; and a step 3 of, with the wireless communication characteristic (throughput) measured or calculated for the wireless communication terminal under the current communication standard and the parameters of the physical layer and the MAC layer at that time as inputs, calculating a wireless communication characteristic (throughput) corresponding to parameters of the wireless communication terminal under the new communication standard.

Abstract: In a wireless communication system in which a plurality of wireless stations perform transmission on a shared frequency band, the wireless stations each include means for notifying a wireless station control apparatus of capability and environment information that includes information about capability of a local wireless station and information about a surrounding environment, and the wireless station control apparatus includes control means for selecting, based on capability and environment information. collected from the wireless station, a frequency band to be used for the wireless station capable of using a plurality of frequency bands in accordance with a predetermined control index and setting the selected frequency band. Based on an area coverage rate of the wireless station as the control index, a frequency band with which. an area coverage rate of the wireless station having an area coverage rate of less than or equal to a predetermined threshold is improved is selected.

Abstract: A wireless communications method for connecting a base station with each of a plurality of terminal stations set to differ in basic rate, the base station being equipped with a plurality of wireless communications units configured to be connectable with one or more of the terminal stations, includes: a collection step of collecting information about a transmission rate set for each of the terminal stations; a policy calculation step of calculating a setting policy for setting a basic rate permitted for each of the wireless communications units and a switching policy for setting a condition for switching that one of the wireless communications units which is to be connected, for each of the terminal stations, based on each item of the collected information about transmission rates; and a setting step of setting those of the terminal stations which are to be connected, for each of the wireless communications units based on the calculated setting policy and switching policy.

Abstract: A method includes a step 1 of performing processing for determining wireless terminal stations that are inside cover areas of existing wireless base stations, and excluding the existing wireless base stations and the wireless terminal stations inside the cover areas from a wireless base station installation area, a step 2 of performing processing for optimizing, with respect to each first wireless terminal station that is outside the cover areas of the existing wireless base stations and has been left in the processing for excluding in the step 1, a combination of the first wireless terminal station and the closest additional wireless base station from which received power is the largest, and optimizing installation positions of additional wireless base stations, a step 3 of determining, with respect to the combinations of the additional wireless base stations and the first wireless terminal stations that were optimized in the step 2, whether wireless terminal stations are inside or outside cover areas of the

Abstract: This disclosure provides a method for calculating the installation number and installation positions of wireless base stations in accordance with the positions of wireless terminal stations within an installation area. First, when a predetermined number of wireless base stations are temporarily installed within the installation area, a wireless base station accommodating each wireless terminal station in a communication area is determined and the number of wireless base stations accommodating each wireless terminal station is calculated as a “number of conflicts”. Next, wireless base stations successively accommodating starting with an un-accommodated wireless terminal station of a small number of conflicts are successively selected as objects of installation. Then, the installation number and installation positions of the wireless base stations are calculated, with the temporarily installed wireless base stations other than the wireless base stations serving as the objects of installation being excluded.

Abstract: A wireless base station setting position calculation method includes a step Si for assuming the setting area to be a rectangle, receiving an input of longitudinal and lateral lengths of a setting area and the number of wireless base stations to be set “s”, and determining one or more candidates of a number of divisions “d” of the setting area according to the number of wireless base stations “s”, a step S2 for representing the number of divisions “d” in a division ratio x:y and selecting, for each number of divisions “d”, according to the longitudinal and lateral lengths of the setting area, a division ratio at which diagonal line lengths of divided areas are minimized, a step S3 for performing, for each number of divisions “d”, adjustment of a division pattern until a difference m between the number of divisions “d” and the number of wireless base stations “s” decreases to 0, a step S4 for calculating, for each number of divisions “d”, a sum of the diagonal line lengths of the divided areas and selecting the

Abstract: The each AP includes a control unit that detects, as the wireless environment information, a signal detection level for one or more neighboring APs positioned in the neighborhood of the AP and notifies the detected signal detection level to the central coordinator, and controls the ATT value by the setting in the central coordinator; and the central coordinator includes a parameter calculation unit that calculates the ATT value for each the APs, based on the signal detection level for each the neighboring wireless access point notified from the plurality of APs and based on an RSSI threshold at which each the APs is able to secure a prescribed service area.

Abstract: Provided is a wireless base station which uses distributed antennas and selects a combination of a plurality of wireless terminals and the distributed antennas of a wireless base station that performs multi-user transmission with respect to the plurality of wireless terminals in a multi-BSS wireless environment. The wireless base station includes: a scheduling unit that measures reception power (RSSI) from each wireless terminal at each of the distributed antennas and selects a combination of a plurality of wireless terminals and a plurality of antennas having approximately the same RSSIs in descending order for respective wireless terminals; and a transmission power control unit that sets minimum transmission power corresponding to the RSSI of the antenna when multi-user transmission is performed between the plurality of wireless terminals and the plurality of antennas combined by the scheduling unit.

Abstract: An AP and UE, which perform access control using CSMA/CA, perform a step judging an exposed level in transmission of the AP based on a congesting level in transmission, which is caused by a wireless station in defer transmission that is in a neighborhood of the AP; a step judging an exposed level in reception of the UE based on a congesting level in reception, which is caused by a wireless station in defer transmission that is in a neighborhood of the UE; and a step performing control which changes a channel of the AP, when the exposed level in transmission cannot satisfy expected quality of the AP, and performing control which changes a connected AP of the UE, or control which changes to other network, when the exposed level in transmission or in reception cannot satisfy required quality of the UE or the expected quality of the AP.

Abstract: Included are n antenna sets; n antenna switch units; n signal change units each changing a combination of one or more of a phase, a timing, a frequency, and a power of each signal transmitted/received in n antennas being selected from the antenna sets; a notification unit outputting a notification signal, in which control information on the antenna switch units and the signal change units according to a target terminal being a destination/source of the signals transmitted/received in the n antennas, are arranged according to a switch time of each of the antenna switch units and a change time of each of the signal change units; and a control unit sequentially starting control of switching by each of the antenna switch units and control of changing by each of the signal change units in order in which the control information on the each unit in the notification signal is notified.

Abstract: [Problem] A base station includes a plurality of radio communication units individually supporting a plurality of communication capabilities, and controls a terminal station to be connected with the base station to select a radio communication unit according to a communication scheme of the terminal station. [Solution] Provided is a radio communication method of a radio communication system. The radio communication system includes a plurality of base stations mounted with a plurality of radio communication units for which different communication schemes are settable, a terminal station configured to perform radio communication in a certain communication scheme, and a centralized control station configured to control the plurality of base stations.