Patents by Inventor Yuhei NAGAO
Yuhei NAGAO has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).
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Patent number: 11832313Abstract: A wireless LAN system according to the present disclosure includes: a wireless LAN base station (AP); and a plurality of wireless LAN terminals (STA) that perform uplink multi-user communication with the wireless LAN base station (AP). The wireless LAN base station (AP) transmits a trigger frame to allocate a predetermined resource unit, the trigger frame including a terminal ID that specifies a wireless LAN terminal (STA) before association among the plurality of wireless LAN terminals (STA), to the plurality of wireless LAN terminals (STA). The wireless LAN terminal before the association (STA) selects, when the terminal ID that specifies the wireless LAN terminal before the association (STA) is included in the trigger frame, the predetermined resource unit and transmits uplink data to the wireless LAN base station (AP).Type: GrantFiled: November 18, 2020Date of Patent: November 28, 2023Assignee: NEC CORPORATIONInventors: Leonardo Lanante, Yuhei Nagao, Hiroshi Ochi
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Patent number: 11812466Abstract: A wireless communication system according to the present disclosure includes an access point (AP) and a terminal (STA) that belong to a BSS. The AP and the STA adaptively disable OBSS_PD-based SR.Type: GrantFiled: March 30, 2021Date of Patent: November 7, 2023Assignee: NEC CORPORATIONInventors: Leonardo Lanante, Yuhei Nagao, Hiroshi Ochi
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Publication number: 20230284262Abstract: A wireless communication system according to the present disclosure includes an access point (AP) belonging to a certain BSS and a terminal (STA) belonging to the AP. The STA updates an NAV used for virtual carrier sense according to whether the AP and the STA are permitted to use OBSS_PD-based SR.Type: ApplicationFiled: May 11, 2023Publication date: September 7, 2023Applicant: NEC CorporationInventors: Leonardo LANANTE, Yuhei NAGAO, Hiroshi OCHI
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Patent number: 11700636Abstract: A wireless communication system according to the present disclosure includes an access point (AP) belonging to a certain BSS and a terminal (STA) belonging to the AP. The STA updates an NAV used for virtual carrier sense according to whether the AP and the STA are permitted to use OBSS_PD-based SR.Type: GrantFiled: January 26, 2021Date of Patent: July 11, 2023Assignee: NEC CORPORATIONInventors: Leonardo Lanante, Yuhei Nagao, Hiroshi Ochi
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Publication number: 20220141794Abstract: A terminal (10) includes an Initiator functional unit (13) for acquiring information to be used for estimating position information of the terminal by performing frame exchange with a neighboring Responder terminal, a Responder functional unit (14) for providing the information to be used for estimating the position information of the Initiator terminal by performing the frame exchange with a neighboring Initiator terminal, and a control unit (12) for controlling the Initiator functional unit (13) and the Responder functional unit (14). The control unit (12) estimates the position information of the terminal (10) based on the information acquired by controlling the terminal (10) to function as the Initiator terminal using the Initiator functional unit (13) and by controlling the terminal (10) to exchange frames with the neighboring Responder terminal, and then controls the terminal (10) to function as the Responder terminal using the Responder functional unit (14) and the position information.Type: ApplicationFiled: January 20, 2022Publication date: May 5, 2022Applicant: NEC CorporationInventors: Leonardo LANANTE, Yuhei NAGAO, Hiroshi OCHI, Tatsumi UWAI
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Publication number: 20220131661Abstract: A communication system is designed to achieve high speed of periodic communication while ensuring reliability of communications. An access point and multiple stations are provided. A beacon cycle is set as a reference cycle and a communication period of N reference cycle is set for transmitting data to perform periodic communication. Successive communication periods are overlapped by an overlapping of M cycle which is shorter than the N cycle. The communication period has a normal transmission period and one or more cycles of retransmission period, and the normal transmission period of the next communication period overlaps the retransmission period of the previous communication period. Orthogonal frequency division multiple access method is used for communication between the access point and stations.Type: ApplicationFiled: January 9, 2022Publication date: April 28, 2022Inventors: Akinori Nagao, Yuhei Nagao, Masayuki Kurosaki, Hiroshi Ochi, Kyoshiro Sakamoto
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Publication number: 20210219338Abstract: A wireless communication system according to the present disclosure includes an access point (AP) and a terminal (STA) that belong to a BSS. The AP and the STA adaptively disable OBSS_PD-based SR.Type: ApplicationFiled: March 30, 2021Publication date: July 15, 2021Applicant: NEC CorporationInventors: Leonardo LANANTE, Yuhei NAGAO, Hiroshi OCHI
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Publication number: 20210153243Abstract: A wireless communication system according to the present disclosure includes an access point (AP) belonging to a certain BSS and a terminal (STA) belonging to the AP. The STA updates an NAV used for virtual carrier sense according to whether the AP and the STA are permitted to use OBSS_PD-based SR.Type: ApplicationFiled: January 26, 2021Publication date: May 20, 2021Applicant: NEC CorporationInventors: Leonardo LANANTE, Yuhei NAGAO, Hiroshi OCHI
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Patent number: 10986664Abstract: A wireless communication system according to the present disclosure includes an access point (AP) and a terminal (STA) that belong to a BSS. The AP and the STA adaptively disable OBSS_PD-based SR.Type: GrantFiled: July 10, 2019Date of Patent: April 20, 2021Assignee: NEC CORPORATIONInventors: Leonardo Lanante, Yuhei Nagao, Hiroshi Ochi
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Publication number: 20210076415Abstract: A wireless LAN system according to the present disclosure includes: a wireless LAN base station (AP); and a plurality of wireless LAN terminals (STA) that perform uplink multi-user communication with the wireless LAN base station (AP). The wireless LAN base station (AP) transmits a trigger frame to allocate a predetermined resource unit, the trigger frame including a terminal ID that specifies a wireless LAN terminal (STA) before association among the plurality of wireless LAN terminals (STA), to the plurality of wireless LAN terminals (STA). The wireless LAN terminal before the association (STA) selects, when the terminal ID that specifies the wireless LAN terminal before the association (STA) is included in the trigger frame, the predetermined resource unit and transmits uplink data to the wireless LAN base station (AP).Type: ApplicationFiled: November 18, 2020Publication date: March 11, 2021Applicant: NEC CORPORATIONInventors: Leonardo Lanante, Yuhei Nagao, Hiroshi Ochi
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Patent number: 10939465Abstract: A wireless communication system according to the present disclosure includes an access point (AP) belonging to a certain BSS and a terminal (STA) belonging to the AP. The STA updates an NAV used for virtual carrier sense according to whether the AP and the STA are permitted to use OBSS_PD-based SR.Type: GrantFiled: January 11, 2018Date of Patent: March 2, 2021Assignee: NEC CORPORATIONInventors: Leonardo Lanante, Yuhei Nagao, Hiroshi Ochi
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Publication number: 20210029665Abstract: A terminal (10) includes an Initiator functional unit (13) for acquiring information to be used for estimating position information of the terminal by performing frame exchange with a neighboring Responder terminal, a Responder functional unit (14) for providing the information to be used for estimating the position information of the Initiator terminal by performing the frame exchange with a neighboring Initiator terminal, and a control unit (12) for controlling the Initiator functional unit (13) and the Responder functional unit (14). The control unit (12) estimates the position information of the terminal (10) based on the information acquired by controlling the terminal (10) to function as the Initiator terminal using the Initiator functional unit (13) and by controlling the terminal (10) to exchange frames with the neighboring Responder terminal, and then controls the terminal (10) to function as the Responder terminal using the Responder functional unit (14) and the position information.Type: ApplicationFiled: March 8, 2019Publication date: January 28, 2021Applicant: NEC CORPORATIONInventors: Leonardo LANANTE, Yuhei NAGAO, Hiroshi OCHI, Tatsumi UWAI
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Patent number: 10880930Abstract: A wireless LAN system according to the present disclosure includes: a wireless LAN base station (AP); and a plurality of wireless LAN terminals (STA) that perform uplink multi-user communication with the wireless LAN base station (AP). The wireless LAN base station (AP) transmits a trigger frame to allocate a predetermined resource unit, the trigger frame including a terminal ID that specifies a wireless LAN terminal (STA) before association among the plurality of wireless LAN terminals (STA), to the plurality of wireless LAN terminals (STA). The wireless LAN terminal before the association (STA) selects, when the terminal ID that specifies the wireless LAN terminal before the association (STA) is included in the trigger frame, the predetermined resource unit and transmits uplink data to the wireless LAN base station (AP).Type: GrantFiled: January 5, 2017Date of Patent: December 29, 2020Assignee: NEC CORPORATIONInventors: Leonardo Lanante, Yuhei Nagao, Hiroshi Ochi
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Patent number: 10798740Abstract: A wireless communication system according to the present disclosure includes an access point (AP) and a terminal (STA) that belong to a BSS. The STA compatible with IEEE 802.11ax switches, under an environment where the AP and the STA compatible with IEEE 802.11ax enable OBSS_PD-based SR, an NAV used for virtual carrier sense according to whether only the STA compatible with IEEE 802.11ax is present as the STA or both the STA compatible with IEEE 802.11ax and the STA incompatible with IEEE 802.11ax are present as the STAs.Type: GrantFiled: January 11, 2018Date of Patent: October 6, 2020Assignee: NEC CORPORATIONInventors: Leonardo Lanante, Yuhei Nagao, Hiroshi Ochi
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Patent number: 10772138Abstract: A wireless LAN system according to the present disclosure includes a wireless LAN base station (AP), and a plurality of wireless LAN terminals (STA) which perform uplink multi-user communication with the wireless LAN base station (AP). An AID indicating an associated wireless LAN terminal (STA) includes a specific bit generated by using a BCB. The wireless LAN base station (AP) and an unassociated wireless LAN terminal (STA) generate a UAID which indicates the unassociated wireless LAN terminal (STA) to include the specific bit or a processed bit obtained by processing the specific bit, and use a bit to be distinguished from the AID as a bit other than the specific bit of the UAID when the specific bit is included in the UAID.Type: GrantFiled: August 9, 2017Date of Patent: September 8, 2020Assignee: NEC CORPORATIONInventors: Leonardo Lanante, Yuhei Nagao, Hiroshi Ochi
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Publication number: 20200008237Abstract: A wireless communication system according to the present disclosure includes an access point (AP) belonging to a certain BSS and a terminal (STA) belonging to the AP. The STA updates an NAV used for virtual carrier sense according to whether the AP and the STA are permitted to use OBSS_PD-based SR.Type: ApplicationFiled: January 11, 2018Publication date: January 2, 2020Applicant: NEC CORPORATIONInventors: Leonardo LANANTE, Yuhei NAGAO, Hiroshi OCHI
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Publication number: 20190335502Abstract: A wireless communication system according to the present disclosure includes an access point (AP) and a terminal (STA) that belong to a BSS. The STA compatible with IEEE 802.11ax switches, under an environment where the AP and the STA compatible with IEEE 802.11ax enable OBSS_PD-based SR, an NAV used for virtual carrier sense according to whether only the STA compatible with IEEE 802.11ax is present as the STA or both the STA compatible with IEEE 802.11ax and the STA incompatible with IEEE 802.11ax are present as the STAs.Type: ApplicationFiled: January 11, 2018Publication date: October 31, 2019Applicant: NEC CORPORATIONInventors: Leonardo LANANTE, Yuhei NAGAO, Hiroshi OCHI
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Publication number: 20190335498Abstract: A wireless communication system according to the present disclosure includes an access point (AP) and a terminal (STA) that belong to a BSS. The AP and the STA adaptively disable OBSS_PD-based SR.Type: ApplicationFiled: July 10, 2019Publication date: October 31, 2019Applicant: NEC CORPORATIONInventors: Leonardo LANANTE, Yuhei NAGAO, Hiroshi OCHI
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Publication number: 20190281640Abstract: A wireless LAN system according to the present disclosure includes a wireless LAN base station (AP), and a plurality of wireless LAN terminals (STA) which perform uplink multi-user communication with the wireless LAN base station (AP). An AID indicating an associated wireless LAN terminal (STA) includes a specific bit generated by using a BCB. The wireless LAN base station (AP) and an unassociated wireless LAN terminal (STA) generate a UAID which indicates the unassociated wireless LAN terminal (STA) to include the specific bit or a processed bit obtained by processing the specific bit, and use a bit to be distinguished from the AID as a bit other than the specific bit of the UAID when the specific bit is included in the UAID.Type: ApplicationFiled: August 9, 2017Publication date: September 12, 2019Applicant: NEC CORPORATIONInventors: Leonardo LANANTE, Yuhei NAGAO, Hiroshi OCHI
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Publication number: 20190053275Abstract: A wireless LAN system according to the present disclosure includes: a wireless LAN base station (AP); and a plurality of wireless LAN terminals (STA) that perform uplink multi-user communication with the wireless LAN base station (AP). The wireless LAN base station (AP) transmits a trigger frame to allocate a predetermined resource unit, the trigger frame including a terminal ID that specifies a wireless LAN terminal (STA) before association among the plurality of wireless LAN terminals (STA), to the plurality of wireless LAN terminals (STA). The wireless LAN terminal before the association (STA) selects, when the terminal ID that specifies the wireless LAN terminal before the association (STA) is included in the trigger frame, the predetermined resource unit and transmits uplink data to the wireless LAN base station (AP).Type: ApplicationFiled: January 5, 2017Publication date: February 14, 2019Applicant: NEC CORPORATIONInventors: Leonardo LANANTE, Yuhei NAGAO, Hiroshi OCHI