公开(公告)号：US20240276393A1

公开(公告)日：2024-08-15

申请号：US18565538

申请日：2021-06-08

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Junichi IWATANI ,  Yasuhiko INOUE ,  Yusuke ASAI ,  Yasushi TAKATORI

IPC: H04W52/24 ,  H04W60/00 ,  H04W72/044 ,  H04W72/0453 ,  H04W72/56

CPC classification number: H04W52/243 ,  H04W72/0453 ,  H04W72/0473 ,  H04W72/56 ,  H04W60/00

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.

公开(公告)号：US20240196438A1

公开(公告)日：2024-06-13

申请号：US18585165

申请日：2024-02-23

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Shoko SHINOHARA ,  Yasuhiko INOUE ,  Junichi IWATANI ,  Masato MIZOGUCHI

IPC: H04W74/0816 ,  H04L1/00 ,  H04W16/08 ,  H04W28/06 ,  H04W48/02 ,  H04W72/541 ,  H04W84/12

CPC classification number: H04W74/0816 ,  H04L1/0021 ,  H04W16/08 ,  H04W28/06 ,  H04W72/541 ,  H04W48/02 ,  H04W84/12

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.

公开(公告)号：US20240147441A1

公开(公告)日：2024-05-02

申请号：US18278182

申请日：2021-03-03

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Junichi IWATANI ,  Yasuhiko INOUE ,  Yusuke ASAI

IPC: H04W72/0453 ,  H04W72/541

CPC classification number: H04W72/0453 ,  H04W72/541

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.

公开(公告)号：US20240147296A1

公开(公告)日：2024-05-02

申请号：US18567777

申请日：2021-06-08

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Junichi IWATANI ,  Yasuhiko INOUE ,  Yusuke ASAI ,  Yasushi TAKATORI

IPC: H04W28/02 ,  H04B17/336 ,  H04W60/04 ,  H04W64/00

CPC classification number: H04W28/0236 ,  H04B17/336 ,  H04W60/04 ,  H04W64/00

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. The control device determines whether or not a resource application from the interfering wireless communicator is possible on the basis of the terminal range.

公开(公告)号：US20240056884A1

公开(公告)日：2024-02-15

申请号：US18269603

申请日：2020-12-28

Applicant: Nippon Telegraph and Telephone Corporation

Inventor： Yasuhiko INOUE ,  Kengo Nagata ,  Yusuke Asai ,  Yasushi TAKATORI ,  Akira KISHIDA

IPC: H04W28/04 ,  H04L1/1607

CPC classification number: H04W28/04 ,  H04L1/1628

Abstract: A transmitting station (TX) of an embodiment includes first and second radio signal processing units (STA1 and STA2) and a link management unit (LM). The first and second radio signal processing units are configured to be able to transmit a radio signal using first and second channels, respectively, and store information indicating a sequence number of data to be transmitted. The link management unit establishes multi-link with the receiving station by using the first radio signal processing unit and the second radio signal processing unit, and manages communication using the multi-link. The link management unit distributes a plurality of data units to the first and second radio signal processing units. The first radio signal processing unit transmits a first data unit group input from the link management unit among the plurality of data units to the receiving station, and stores first information (TBM) indicating the sequence number of the data unit included in the first data unit group.

公开(公告)号：US20230327839A1

公开(公告)日：2023-10-12

申请号：US18022573

申请日：2020-08-26

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Mitsuki NAKAMURA ,  Wataru YAMADA ,  Yasuhiko INOUE ,  Shoko SHINOHARA ,  Yusuke ASAI ,  Yasushi TAKATORI

IPC: H04L5/00 ,  H04W72/044 ,  H04W16/28

CPC classification number: H04L5/006 ,  H04W72/044 ,  H04L5/0037 ,  H04W16/28 ,  H04W84/12

Abstract: A base station according to an embodiment includes an antenna, a wireless device, a wireless information acquisition unit, a control unit, a directivity setting unit, a directivity control unit, and a communication instruction unit. The antenna has an omni-directional array antenna. The wireless device communicates with one or more terminals in a cover area by using a wireless signal via the antenna. The wireless information acquisition unit acquires wireless information including the position of the terminal and a communication time block. On the basis of the wireless information, the control unit determines a communication execution time block, which is a time block for executing communication with the terminal, and an antenna gain of the antenna for communicating with the terminal. On the basis of the antenna gain, the directivity setting unit sets a directivity pattern of the omni-directional array antenna so as to have directivity in the direction of the terminal. On the basis of the directivity pattern, the directivity control unit controls the directivity of the omni-directional array antenna. The communication instruction unit instructs the wireless device to communicate with the terminal in the communication execution time block.

公开(公告)号：US20220216930A1

公开(公告)日：2022-07-07

申请号：US17600563

申请日：2020-03-24

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Shoko SHINOHARA ,  Toshiro NAKAHIRA ,  Yasuhiko INOUE ,  Hirantha ABEYSEKERA ,  Koichi ISHIHARA ,  Takafumi HAYASHI ,  Yasushi TAKATORI

IPC: H04B17/318 ,  H04W24/10 ,  H04B17/391

Abstract: A wireless communication characteristic evaluation method for calculating a wireless communication characteristic of a wireless communication system in which a plurality of wireless communication terminals perform communication by transmitting or exchanging signals includes: an RSSI measurement step of measuring an RSSI measurement used for calculation of the wireless communication characteristic; and a calculation step of calculating the wireless communication characteristic based on the RSSI measurement and correction data of the RSSI measurement according to specifications of the wireless communication terminals or a correction calculation model.

公开(公告)号：US20220201759A1

公开(公告)日：2022-06-23

申请号：US17690625

申请日：2022-03-09

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Shoko SHINOHARA ,  Yasuhiko INOUE ,  Akira KISHIDA ,  Riichi KUDO ,  Masato MIZOGUCHI

IPC: H04W74/08 ,  H04B7/0452 ,  H04W28/02

Abstract: A predetermined STA includes a station information collection unit collecting from the STA itself and other STAs station information used for selection of STAs performing simultaneous transmission and for control of the simultaneous transmission, and a simultaneous-transmission request unit knowing occurrence of a QoS data frame based on the station information and transmitting a request frame requesting the simultaneous transmission to an AP. The AP includes a station information collection unit; a simultaneous-transmission determination unit selecting a combination of the STAs performing the simultaneous transmission based on the station information by reception of the request frame; and a trigger transmission unit transmitting to each of the STAs performing the simultaneous transmission a trigger frame instructing to performs the simultaneous transmission and including information necessary for controlling the simultaneous transmission. Each of the STAs designated by the trigger frame is configured to simultaneously transmit the wireless frames to the AP.

公开(公告)号：US20200329501A1

公开(公告)日：2020-10-15

申请号：US16914902

申请日：2020-06-29

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Shoko SHINOHARA ,  Yasuhiko INOUE ,  Junichi IWATANI ,  Masato MIZOGUCHI

IPC: H04W74/08 ,  H04W16/08 ,  H04W28/06 ,  H04L1/00 ,  H04W72/08

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.

公开(公告)号：US20190045035A1

公开(公告)日：2019-02-07

申请号：US16072583

申请日：2017-01-25

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Shoko SHINOHARA ,  Yasuhiko INOUE ,  Junichi IWATANI ,  Masato MIZOGUCHI

IPC: H04L29/06 ,  H04W88/06 ,  H04W88/10 ,  H04W74/08 ,  H04J1/08

Abstract: There is provided a wireless station including a plurality of standard controls corresponding respectively to a plurality of wireless communication standards sharing a frequency resource, the wireless station including a simultaneous transmissions management part setting a parameter for a random access process corresponding to each of the plurality of wireless communication standards for each of the plurality of standard controls, controlling frequencies and transmission start timings of the plurality of wireless communication standards, and simultaneously transmitting wireless frames of each of the wireless communication standards which obtained the transmission opportunities using FDMA, the plurality of standard controls are configured to simultaneously transmit the wireless frames of the plurality of wireless communication standards using FDMA, with the frequency resource which obtained the transmission opportunities by performing the random access process corresponding to each of the wireless communication standards under the control of the simultaneous transmissions management part.