公开(公告)号：US20250024499A1

公开(公告)日：2025-01-16

申请号：US18712808

申请日：2021-11-29

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Riku OMIYA ,  Junichi IWATANI ,  Akira KISHIDA ,  Shinya OTSUKI ,  Yusuke ASAI ,  Tomoaki OGAWA ,  Yasushi TAKATORI

IPC: H04W74/0816 ,  H04W64/00 ,  H04W76/10

Abstract: The wireless communication system includes a plurality of wireless terminals each including a plurality of wireless interfaces corresponding to a plurality of channels in different frequency bands, and a wireless base station device that establishes wireless communication with the wireless terminals. Each of the wireless terminals performs channel sensing, and transmits sensing information including an identifier of a sensed channel, a sensing result of the channel, and an identifier of the wireless terminal. The wireless base station device calculates and stores a sensing time for each of the wireless terminals on the basis of the sensing information, the sensing time being an accumulated value of time required for sensing by the wireless terminal, and allocates a reward according to the sensing time to each of the plurality of wireless terminals.

公开(公告)号：US20250016616A1

公开(公告)日：2025-01-09

申请号：US18711695

申请日：2021-12-03

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Riku OMIYA ,  Junichi IWATANI ,  Akira KISHIDA ,  Shinya OTSUKI ,  Yusuke ASAI ,  Tomoaki OGAWA ,  Yasushi TAKATORI

IPC: H04W28/04

Abstract: A wireless communication system according to one embodiment is a wireless communication system including: one or more wireless terminals capable of communicating by both a first communication scheme using a first frequency band and a second communication scheme using a second frequency band, which is higher than the first frequency band; and a multi-device compatible base station that accommodates the wireless terminals, and the wireless communication system includes: number-of-times measurement circuitry configured to measure the number of retries for attempting communication by the second communication scheme; and a controller to perform control such that the base station performs wireless communication by the first communication scheme without using the second communication scheme until a predetermined time elapses with respect to a wireless terminal in which the number of times measured by the number-of-times measurement circuitry exceed a predetermined number of times.

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：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：US20200053774A1

公开(公告)日：2020-02-13

申请号：US16498869

申请日：2018-03-28

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Akiyoshi INOKI ,  Hirantha ABEYSEKERA ,  Munehiro MATSUI ,  Kenichi KAWAMURA ,  Yasushi TAKATORI ,  Takeo ICHIKAWA ,  Akira KISHIDA ,  Yoshifumi MORIHIRO ,  Takahiro ASAI

IPC: H04W74/08

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.

公开(公告)号：US20240340829A1

公开(公告)日：2024-10-10

申请号：US18682267

申请日：2021-08-18

Applicant: Nippon Telegraph and Telephone Corporation

Inventor： Akira KISHIDA ,  Kengo NAGATA ,  Shoko SHINOHARA ,  Hanae OTANI ,  Yusuke ASAI ,  Yasushi TAKATORI

IPC: H04W56/00 ,  H04W74/0833

CPC classification number: H04W56/0045 ,  H04W74/0833

Abstract: A transmitting station which is a station that transmits a wireless signal includes a first wireless signal processing unit, a second wireless signal processing unit, and a transmission timing adjustment unit. The first wireless signal processing unit transmits and receives a wireless signal using a first channel. The second wireless signal processing unit transmits and receives a wireless signal using a second channel different from the first channel. The transmission timing adjustment unit adjusts transmission timings of first data and second data on the basis of a first status associated with the first wireless signal processing unit and a second status associated with the second wireless signal processing unit.

公开(公告)号：US20240098783A1

公开(公告)日：2024-03-21

申请号：US18276449

申请日：2021-02-18

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Hanae OTANI ,  Akira KISHIDA ,  Kengo NAGATA ,  Yusuke ASAI ,  Yasuhiko INOUE ,  Yasushi TAKATORI

IPC: H04W74/08

CPC classification number: H04W74/0808

Abstract: A wireless apparatus according to one aspect of the present invention includes a reception unit configured to receive, on a frequency channel, a frame including first identification information for identifying the priority level of the frame, and a carrier sensing control unit configured to determine a threshold based on the first identification information, and determine a usage state of the frequency channel based on a comparison between received power of the frame and the determined threshold.

公开(公告)号：US20240064835A1

公开(公告)日：2024-02-22

申请号：US18269848

申请日：2021-03-24

Applicant: Nippon Telegraph and Telephone Corporation

Inventor： Akira KISHIDA ,  Kengo NAGATA ,  Yasuhiko INOUE ,  Yusuke ASAI ,  Yasushi TAKATORI

IPC: H04W76/15 ,  H04L1/1607

CPC classification number: H04W76/15 ,  H04L1/1642

Abstract: A transmitting station (TX) according to an embodiment includes first and second wireless signal processing units (STA1 and STA2) and a link management unit (LM). The first and second wireless signal processing units transmit wireless signals using first and second channels, respectively. The link management unit establishes multi-link with a receiving station. The link management unit manage communication in which the multi-link are used and store first information (TBM) indicating a sequence number of transmission target data. When second information (RBM) indicating the sequence number of the data received by the receiving station is received from the receiving station via the first or second wireless signal processing unit, the link management unit sets a bit corresponding to the sequence number indicated by the second information in the first information as a transmitted bit.

公开(公告)号：US20230354186A1

公开(公告)日：2023-11-02

申请号：US18017958

申请日：2020-07-27

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Akira KISHIDA ,  Kengo NAGATA ,  Yasuhiko INOUE ,  Yusuke ASAI ,  Yasushi TAKATORI

IPC: H04W52/02

CPC classification number: H04W52/0206 ,  H04W52/0212

Abstract: According to an embodiment, a base station includes first and second wireless signal processing units and a link management unit. The first and second wireless signal processing units transmit and receive a wireless signal using first and second channels, respectively. The link management unit sets a multi-link to a first or second state. In the first state, a first link in which the first wireless signal processing unit is used and a second link in which the second wireless signal processing unit is used are each in an active mode in which communication is possible. In the second state, the first link is in the active mode or an intermittent operation mode in which an operation is intermittent, and the second link is an operation pause mode in which power consumption is less than in the intermittent operation mode.

公开(公告)号：US20230140487A1

公开(公告)日：2023-05-04

申请号：US17910912

申请日：2020-03-17

Applicant: NIPPON TELEGRAPH AND TELEPHONE CORPORATION

Inventor： Akira KISHIDA ,  Yasuhiko INOUE ,  Kengo NAGATA ,  Yusuke ASAI ,  Yasushi TAKATORI

IPC: H04W28/26 ,  H04W74/08

Abstract: A base station serving as a second base station includes a wireless signal processing unit capable of using a first channel held in common with another base station serving as a first base station. The wireless signal processing unit is configured to execute first cooperative processing in a case of the first base station acquiring a transmission right for the first channel that is a primary channel. The first cooperative processing includes, on the basis of the second base station acquiring a transmission right for a second channel that is a secondary channel of the second base station, deciding to transmit by the second channel.