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1. 发明申请

US20230049652A1 Wireless Signal Transmitting Method And Wireless Apparatus 有权
公开(公告)号：US20230049652A1
公开(公告)日：2023-02-16
申请号：US17978257
申请日：2022-11-01
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Tomoki MURAKAMI , Yusuke ASAI , Riichi KUDO , Koichi ISHIHARA , Masato MIZOGUCHI , Takeo ICHIKAWA
IPC分类号： H04L27/26 , H04J11/00 , H04L5/00 , H04W28/16 , H04B7/024 , H04B7/06 , H04B7/0452 , H04B7/0456 , H04W88/08
摘要： Interference in preamble signals and pilot signals in cooperative transmission using interference suppressing technology is avoided. A wireless apparatus for transmitting a wireless signal on which directivity control has been performed to stations in a wireless system including at least one wireless apparatus is provided with a known signal generating unit which generates a known signal to be added to the wireless signal, a weighting processing unit which performs weighting on the known signal generated by the known signal generating unit, and a wireless processing unit which transmits the known signal on which the weighting has been performed by the weighting processing unit.

2. 发明申请

US20230025646A1 TERMINAL DEVICES, COMMUNICATION METHODS, AND COMMUNICATION SYSTEMS 有权
公开(公告)号：US20230025646A1
公开(公告)日：2023-01-26
申请号：US17785370
申请日：2019-12-16
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Ryota SHIINA , Tomohiro TANIGUCHI , Kazutaka HARA , Shinya TAMAKI , Tomoki MURAKAMI , Toshiro NAKAHIRA
IPC分类号： H04B10/114
摘要： An object is to provide a terminal device, a communication method, and a communication system which are capable of acquiring accurate optical ID information regardless of the position of the terminal device and the light receiving angle.
The terminal device, the communication method, and the communication system according to the present invention each sets a threshold value for the illuminance of a received optical signal by using a moving average method, a weighted moving average method, or an exponential moving average, so that the optical signal can be binarized with a threshold value according to a change in the position of the terminal device, the light receiving angle, or the like. Information from other sensors may be used to set the threshold value.

3. 发明申请

US20220303004A1 WIRELESS COMMUNICATION SYSTEM, WIRELESS TERMINAL EQUIPMENT, WIRELESS BASE STATION EQUIPMENT AND WIRELESS COMMUNICATION METHODS 有权
公开(公告)号：US20220303004A1
公开(公告)日：2022-09-22
申请号：US17632901
申请日：2019-08-07
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Tomohiro TANIGUCHI , Shinya TAMAKI , Ryota SHIINA , Kazutaka HARA , Tomoki MURAKAMI , Toshiro NAKAHIRA
IPC分类号： H04B10/11
摘要： According to the present disclosure, a wireless base station device delivers, to a wireless terminal device, an optical ID having a simple configuration in accordance with a pre-stored optical ID correspondence list; and the wireless terminal device selects connection authentication information corresponding to the received optical ID from a pre-stored optical ID correspondence list, and transmits predetermined authentication information to the wireless base station device through a predetermined connection method by RF wireless. Upon confirming that the received authentication information matches authentication information corresponding to an optical ID in the optical ID correspondence list, the wireless base station device permits information communication between the wireless terminal device and a higher-level network.

4. 发明申请

US20220299620A1 SPATIAL IMAGE GENERATING DEVICE, OBJECT DETECTION DEVICE AND OBJECT DETECTION METHOD 有权
公开(公告)号：US20220299620A1
公开(公告)日：2022-09-22
申请号：US17636558
申请日：2020-08-19
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Tomoki MURAKAMI , Hirantha ABEYSEKERA , Shunsuke SARUWATARI , Takeru FUKUSHIMA , Yusuke IWASAKI , Takashi WATANABE
IPC分类号： G01S13/06 , G01S5/02 , G02B30/56
摘要： A spatial image generation apparatus includes: a propagation channel information measurer that measures propagation channel information of a target area from radio signals delivered between transmitting and receiving stations; a learned model generator that generates a learned model for generating a spatial image of the target area from the newly input propagation channel information using the propagation channel information and image information obtained by imaging the target area with a camera; and an image generator that generates the spatial image of the target area by inputting the propagation channel information newly input from the propagation channel information measurer to the learned model. The object detection apparatus includes: the spatial image generation apparatus; and an object detector that detects an object in the target area from the spatial image generated by the image generator using an image analysis method.

5. 发明申请

US20210258047A1 Wireless Signal Transmitting Method And Wireless Apparatus 有权
公开(公告)号：US20210258047A1
公开(公告)日：2021-08-19
申请号：US17306084
申请日：2021-05-03
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Tomoki MURAKAMI , Yusuke ASAI , Riichi KUDO , Koichi ISHIHARA , Masato MIZOGUCHI , Takeo ICHIKAWA
IPC分类号： H04B7/0452 , H04J11/00 , H04L5/00 , H04L27/26 , H04W28/16 , H04B7/024 , H04B7/06 , H04B7/0456 , H04W88/08
摘要： Interference in preamble signals and pilot signals in cooperative transmission using interference suppressing technology is avoided. A wireless apparatus for transmitting a wireless signal on which directivity control has been performed to stations in a wireless system including at least one wireless apparatus is provided with a known signal generating unit which generates a known signal to be added to the wireless signal, a weighting processing unit which performs weighting on the known signal generated by the known signal generating unit, and a wireless processing unit which transmits the known signal on which the weighting has been performed by the weighting processing unit.

6. 发明申请

US20210037448A1 WIRELESS COMMUNICATION SYSTEM AND WIRELESS COMMUNICATION METHOD 有权
公开(公告)号：US20210037448A1
公开(公告)日：2021-02-04
申请号：US16969085
申请日：2019-02-12
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Toshiro NAKAHIRA , Tomoki MURAKAMI , Koichi ISHIHARA , Mamoru AKIMOTO , Takafumi HAYASHI
IPC分类号： H04W48/02 , H04W48/16 , H04W88/10 , H04W88/06
摘要： [Problem] In a terminal station and a base station, in which a plurality of wireless communication units supporting different communication performances are mounted, it is possible to select and switch wireless communication unit which responds to a congested condition of wireless communication and a wireless communication quality, and further improves a wireless resource usage efficiency.
[Solution] A wireless communication units individually supporting a plurality of communication performances and selecting a wireless communication unit with respect to a terminal station that has made a connection request according to a communication performance of the terminal station, wherein the base station includes a control unit that is configured to hold, for each of the wireless communication units, terminal station connection permission information indicating a permission condition as to whether permission of the connection request of the terminal station be granted according to the communication performance, to collate the communication performance of the terminal station with the terminal station connection permission information of the wireless communication unit to which the connection request was made, to establish a wireless connection with the terminal station in a case where the communication performance of the terminal station matches the permission condition, and, in a case where the communication performance does not match the permission condition, to direct the terminal station to another wireless communication unit whose permission condition matches the communication performance of the terminal station.

7. 发明申请

US20190081666A1 Wireless Signal Transmitting Method And Wireless Apparatus 审中-公开
公开(公告)号：US20190081666A1
公开(公告)日：2019-03-14
申请号：US16185859
申请日：2018-11-09
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Tomoki MURAKAMI , Yusuke ASAI , Riichi KUDO , Koichi ISHIHARA , Masato MIZOGUCHI , Takeo ICHIKAWA
IPC分类号： H04B7/0452 , H04W28/16 , H04L5/00 , H04B7/06 , H04B7/0456 , H04B7/024 , H04L27/26 , H04J11/00 , H04W88/08
摘要： Interference in preamble signals and pilot signals in cooperative transmission using interference suppressing technology is avoided. A wireless apparatus for transmitting a wireless signal on which directivity control has been performed to stations in a wireless system including at least one wireless apparatus is provided with a known signal generating unit which generates a known signal to be added to the wireless signal, a weighting processing unit which performs weighting on the known signal generated by the known signal generating unit, and a wireless processing unit which transmits the known signal on which the weighting has been performed by the weighting processing unit.

8. 发明申请

US20230033853A1 TERMINAL DEVICES, COMMUNICATION METHODS, AND COMMUNICATION SYSTEMS 有权
公开(公告)号：US20230033853A1
公开(公告)日：2023-02-02
申请号：US17790990
申请日：2020-01-23
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Ryota SHIINA , Tomohiro TANIGUCHI , Kazutaka HARA , Shinya TAMAKI , Tomoki MURAKAMI , Toshiro NAKAHIRA
IPC分类号： H04B10/11 , H04B10/80
摘要： An objective is to provide a terminal device, a communication method, and a communication system in which the time taken by connection operations/authentication operations does not increase proportionally with the pattern length, even if the transmitting side and the receiving side are not synchronized. A terminal device, a communication method, and a communication system according to the present invention create n pieces of signal information (n-bit patterns) by sequentially shifting each bit of a single piece of received signal information (n-bit pattern) one bit at a time. Through the above, signal information time-shifted by one bit each is obtained. Thus, even if the transmitting side and the receiving side are not synchronized, one of the n pieces of signal information is a signal synchronized with the transmitting side. Thereafter, the signal synchronized with the transmitting side can be detected by a brute-force calculation with the patterns (ID information) in the list.

9. 发明申请

US20230022598A1 TERMINAL DEVICES, COMMUNICATION METHODS, AND COMMUNICATION SYSTEMS 有权
公开(公告)号：US20230022598A1
公开(公告)日：2023-01-26
申请号：US17784931
申请日：2019-12-16
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Ryota SHIINA , Tomohiro TANIGUCHI , Kazutaka HARA , Shinya TAMAKI , Tomoki MURAKAMI , Toshiro NAKAHIRA
IPC分类号： H04B10/11 , H04W12/06
摘要： An object of the present invention is to provide a terminal device, a communication method, and a communication system which are capable of reducing the error rate even if the transmitting side and the receiving side are asynchronous. The terminal device, communication method, and communication system according to the present invention sample an optical signal more finely than a 0/1 bit pattern in optical ID estimation processing for determining which of 1/0 the data acquired by an optical sensor is, and perform a majority decision using a plurality of sampling values in a decision processing window. Thus, even if the correct sampling value fails to be obtained, the correct bit value can be derived from other samplings.

10. 发明申请

US20220240114A1 WIRELESS COMMUNICATION PERFORMANCE MEASUREMENT METHOD AND WIRELESS COMMUNICATION PERFORMANCE MEASUREMENT SYSTEM 有权
公开(公告)号：US20220240114A1
公开(公告)日：2022-07-28
申请号：US17603769
申请日：2020-04-17
申请人： NIPPON TELEGRAPH AND TELEPHONE CORPORATION
发明人： Toshiro NAKAHIRA , Tomoki MURAKAMI , Hirantha ABEYSEKERA , Koichi ISHIHARA , Takafumi HAYASHI , Yasushi TAKATORI
IPC分类号： H04W24/08 , H04W24/10
摘要： A measurement station collects radio base station performance information related to a radio communication performance of each radio base station, radio connection information related to a radio communication performance and a communication status of a corresponding radio terminal station, generates a measurement condition and an expected measurement result based on the radio base station performance information and the radio connection information, and notifies a measurement control signal corresponding to the measurement condition to the radio terminal station through the radio base station; the radio terminal station performs a communication setting of an own station based on the notified measurement control signal, and notifies a measurement preparation status to the measurement station; and the measurement station measures the radio communication performance by causing a flow of a measurement traffic to the radio terminal station through the radio base station, acquiring a measurement result, and determining whether the measurement result is within a range of the expected measurement result.

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