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公开(公告)号：US11985533B2
公开(公告)日：2024-05-14
申请号：US17272709
申请日：2019-09-13
发明人： Junichi Iwatani , Hiroyuki Nakamura , Tomoaki Ogawa , Makoto Umeuchi , Shinya Otsuki , Hiroshi Sakamoto , Masayoshi Nabeshima
IPC分类号： H04W28/02 , H04B17/345 , H04W16/14 , H04W16/18 , H04W28/22
CPC分类号： H04W28/0236 , H04B17/345 , H04W16/14 , H04W16/18 , H04W28/22
摘要： 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.
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公开(公告)号：US20210377776A1
公开(公告)日：2021-12-02
申请号：US17272709
申请日：2019-09-13
发明人： Junichi Iwatani , Hiroyuki Nakamura , Tomoaki Ogawa , Makoto Umeuchi , Shinya Otsuki , Hiroshi Sakamoto , Masayoshi Nabeshima
IPC分类号： H04W28/02 , H04B17/345 , H04W16/14 , H04W16/18 , H04W28/22
摘要： 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.
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公开(公告)号：US12058078B2
公开(公告)日：2024-08-06
申请号：US17277317
申请日：2019-09-13
发明人： Hiroshi Sakamoto , Hiroyuki Nakamura , Tomoaki Ogawa , Makoto Umeuchi , Shinya Otsuki , Junichi Iwatani , Masayoshi Nabeshima
IPC分类号： H04L5/00 , H04W28/02 , H04W72/08 , H04W72/541
CPC分类号： H04L5/0073 , H04L5/0057 , H04W28/0236 , H04W72/541
摘要： 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. The interference area detection device compares the lists, determines, for each of positions of the subordinate radio terminals to the predetermined radio base station, whether both of the signal of the predetermined radio base station and a signal of another radio base station, which cannot be detected by the predetermined radio base station, are detected or not, and determines that a position where both of the signals are detected is within an interference area if the predetermined radio base station and the other radio base station detected at the position use the same radio channel.
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公开(公告)号：US11812292B2
公开(公告)日：2023-11-07
申请号：US17287718
申请日：2019-10-18
发明人： Masayoshi Nabeshima , Shinya Otsuki , Tomoaki Ogawa , Hiroshi Sakamoto , Makoto Umeuchi , Junichi Iwatani , Hiroyuki Nakamura
摘要： There are provided an information collecting device configured to collect a frame A transmitted and received between a wireless LAN base station that is an evaluation target and a wireless LAN terminal subordinate to the wireless LAN base station that is the evaluation target and a frame B transmitted and received between a wireless LAN base station that is a non-evaluation target and a wireless LAN terminal subordinate to the wireless LAN base station that is the non-evaluation target, and extract radio information on communication quality of each of the wireless LAN base stations from a header of a corresponding one of the frames A and B, and a wireless LAN communication quality estimation device configured to acquire, from the wireless LAN base station that is the evaluation target, information on the number of currently connected wireless LAN terminals, acquire, from the information collecting device, the radio information on the communication quality of each of the wireless LAN base stations, and analyze the information to estimate whether the communication quality of the wireless LAN base station that is the evaluation target is good or bad.
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公开(公告)号：US20240292266A1
公开(公告)日：2024-08-29
申请号：US18627643
申请日：2024-04-05
发明人： Junichi Iwatani , Hiroyuki Nakamura , Tomoaki Ogawa , Makoto Umeuchi , Shinya Otsuki , Hiroshi Sakamoto , Masayoshi Nabeshima
IPC分类号： H04W28/02 , H04B17/345 , H04W16/14 , H04W16/18 , H04W28/22
CPC分类号： H04W28/0236 , H04B17/345 , H04W16/14 , H04W16/18 , H04W28/22
摘要： 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.
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公开(公告)号：US11985529B2
公开(公告)日：2024-05-14
申请号：US17287181
申请日：2019-10-18
发明人： Masayoshi Nabeshima , Hiroyuki Nakamura , Tomoaki Ogawa , Shinya Otsuki , Makoto Umeuchi , Junichi Iwatani , Hiroshi Sakamoto
摘要： 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.
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公开(公告)号：US20210392535A1
公开(公告)日：2021-12-16
申请号：US17287181
申请日：2019-10-18
发明人： Masayoshi Nabeshima , Hiroyuki Nakamura , Tomoaki Ogawa , Shinya Otsuki , Makoto Umeuchi , Junichi Iwatani , Hiroshi Sakamoto
摘要： 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.
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公开(公告)号：US11889329B2
公开(公告)日：2024-01-30
申请号：US17277083
申请日：2019-09-13
发明人： Shinya Otsuki , Tomoaki Ogawa , Makoto Umeuchi , Junichi Iwatani , Hiroshi Sakamoto , Masayoshi Nabeshima , Hiroyuki Nakamura
摘要： 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. The wireless performance measurement device includes means for obtaining a first comparison result by comparing the first wireless performance information regarding the upstream direction and the downstream direction, obtaining a second comparison result by comparing the second wireless performance information regarding the upstream direction and the downstream direction, and determining the location where an abnormality occurred in accordance with a result of a comparison of the first comparison result and the second comparison result. The location is determined from among the wireless base station, the first wireless terminal, the second wireless terminal, and a wireless propagation environment between the wireless base station and the first wireless terminal and between the wireless base station and the second wireless terminal.
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公开(公告)号：US11595935B2
公开(公告)日：2023-02-28
申请号：US17282465
申请日：2019-09-27
发明人： Tomoaki Ogawa , Hiroyuki Nakamura , Shinya Otsuki , Makoto Umeuchi , Junichi Iwatani , Hiroshi Sakamoto , Masayoshi Nabeshima
摘要： In a wireless information collecting method executed by at least one user terminal device that measures wireless information used in a site survey and a server device that stores the wireless information and performs the site survey, the user terminal device performs a step of periodically measuring a current position and transmitting positioning information indicating the current position to the server device, and a step of measuring the wireless information in accordance with a wireless information measurement number instructed by the server device and transmitting wireless information including a position and time to the server device. The server device performs a step of associating a position of the user terminal device and time with the wireless information and creating and updating a condition map indicating a wireless information measurement number at a position and time at which a site survey is performed, and a step of collating the current position of the user terminal and the time with the condition map and transmitting an instruction for the wireless information measurement number based on the current position of the user terminal device and the time to the user terminal device.
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公开(公告)号：US20210400506A1
公开(公告)日：2021-12-23
申请号：US17287718
申请日：2019-10-18
发明人： Masayoshi Nabeshima , Shinya Otsuki , Tomoaki Ogawa , Hiroshi Sakamoto , Makoto Umeuchi , Junichi Iwatani , Hiroyuki Nakamura
IPC分类号： H04W24/08
摘要： There are provided an information collecting device configured to collect a frame A transmitted and received between a wireless LAN base station that is an evaluation target and a wireless LAN terminal subordinate to the wireless LAN base station that is the evaluation target and a frame B transmitted and received between a wireless LAN base station that is a non-evaluation target and a wireless LAN terminal subordinate to the wireless LAN base station that is the non-evaluation target, and extract radio information on communication quality of each of the wireless LAN base stations from a header of a corresponding one of the frames A and B, and a wireless LAN communication quality estimation device configured to acquire, from the wireless LAN base station that is the evaluation target, information on the number of currently connected wireless LAN terminals, acquire, from the information collecting device, the radio information on the communication quality of each of the wireless LAN base stations, and analyze the information to estimate whether the communication quality of the wireless LAN base station that is the evaluation target is good or bad.
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