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公开(公告)号：US20200305226A1
公开(公告)日：2020-09-24
申请号：US16896719
申请日：2020-06-09
Inventor： TAKENORI SAKAMOTO , HIROYUKI MOTOZUKA , MASATAKA IRIE
Abstract: In a transmission device, a signal processing circuit generates an aggregate physical layer convergence protocol data unit (A-PPDU) by adding a guard interval to each of a first part of a first physical layer convergence protocol data unit (PPDU) transmitted over each of a first through L′th channel of a predetermined channel bandwidth, where L is an integer of 2 or greater, a second part of the first PPDU transmitted over each of an (L+1)′th through P′th channel, which is a variable channel bandwidth that is N times the predetermined channel bandwidth, where N is an integer of 2 or greater and P is an integer of L+1 or greater, and a second PPDU transmitted over the (L+1)′th through P′th channel. A wireless circuit transmits the A-PPDU.
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公开(公告)号：US20190306882A1
公开(公告)日：2019-10-03
申请号：US16443892
申请日：2019-06-18
Inventor： YAO HUANG GAIUS WEE , HIROYUKI MOTOZUKA , MASATAKA IRIE , TAKENORI SAKAMOTO
Abstract: A wireless communication device performs first carrier sensing, regarding part of multiple channels that are candidates for receiving a first signal before reception of the first signal. After having received the first signal, the wireless communication device performs second carrier sensing regarding one or more channels, out of the plurality of channels, that are one or more channels corresponding to the channel information included in the first signal, and where at least the first carrier sensing has not been executed, before reception of data signals by transmission of a second signal.
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3.发明申请公开(公告)号：US20190223253A1
公开(公告)日：2019-07-18
申请号：US16366338
申请日：2019-03-27
Inventor： TAKENORI SAKAMOTO , MASATAKA IRIE , HIROYUKI MOTOZUKA
CPC classification number: H04W80/08 , H04B7/0413 , H04L1/16 , H04L5/0055 , H04L27/2695 , H04L29/08 , H04W28/06 , H04W72/0446 , H04W72/1278 , H04W74/0808 , H04W84/12
Abstract: A communication apparatus includes: a PPDU generation circuit that sets a time equal to or greater than a total of a non-legacy STF, a non-legacy CEF, multiple non-legacy header fields, and multiple data fields as a nominal data field length, computes a nominal data octet size based on the nominal data field length, stores the nominal data octet size in a legacy header, and sets an Additional PPDU field in the legacy header to 0; a signal processing circuit that forms an A-PPDU in the nominal data field length or less; and a transmission circuit that transmits the A-PPDU.
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公开(公告)号：US20230081626A1
公开(公告)日：2023-03-16
申请号：US18057103
申请日：2022-11-18
Inventor： YAO HUANG GAIUS WEE , HIROYUKI MOTOZUKA , MASATAKA IRIE
Abstract: In a case where an A-BFT period is not present in a BI, a PCP/AP uses a format that includes an Unsolicited RSS Enabled sub-field for indicating support for responding to unsolicited RSSs within a CBAP, for a Beacon Interval Control field of a DMG beacon frame used for executing a BTI-ISS. For example, in a case where it is indicated that responding to unsolicited RSSs within a CBAP is supported, the PCP/AP sets the value of the Unsolicited RSS Enabled sub-field to 1. In a case where the value of the Unsolicited RSS Enabled sub-field included in a received DMG beacon frame is 1, a STA responds with an unsolicited CBAP-RSS.
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公开(公告)号：US20210152674A1
公开(公告)日：2021-05-20
申请号：US17131408
申请日：2020-12-22
Inventor： HIROYUKI MOTOZUKA , NAGANORI SHIRAKATA , MASATAKA IRIE , TAKENORI SAKAMOTO
Abstract: A reception apparatus includes reception circuitry and decoding circuitry. The reception receives a signal including a legacy header field, an enhanced directional multi-gigabit (EDMG) header field, and a data field. The decoding circuitry decodes data included in the data field of the received signal. The legacy header field includes a Length field comprising multiple bits. The reception apparatus is an EDMG terminal, and a subset of the multiple bits of the Length field included in the legacy header field is used to indicate bandwidth over which the signal is transmitted. Remaining bits of the Length field included in the legacy header field are used to indicate data length of the received signal.
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Patent Agency Ranking
公开(公告)号：US20170272959A1
公开(公告)日：2017-09-21
申请号：US15446892
申请日：2017-03-01
Inventor： YUJI TOMISAWA , NAGANORI SHIRAKATA , HIROYUKI MOTOZUKA , MASATAKA IRIE
CPC classification number: H04W16/28 , H04B7/022 , H04B7/0617 , H04B7/063 , H04B7/0632 , H04B7/0695 , H04B17/309 , H04L12/4641
Abstract: A virtual base station apparatus (virtual AP) formed by a plurality of base station apparatuses (APs) requests a terminal apparatus (STA) to start beamforming training. The terminal apparatus transmits a plurality of first training frames to the virtual base station apparatus. The virtual base station apparatus receives the plurality of first training frames by using the plurality of base station apparatuses, and transmits a plurality of second training frames including information on a training frame received under the best conditions from a first base station apparatus that has received the training frame received under the best conditions to the terminal apparatus. The terminal apparatus receives the plurality of second training frames, and transmits to the virtual base station apparatus a second frame including information on a frame received under the best conditions among the plurality of second received training frames,
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公开(公告)号：US20200313740A1
公开(公告)日：2020-10-01
申请号：US16614818
申请日：2018-05-17
Inventor： YAO HUANG GAIUS WEE , HIROYUKI MOTOZUKA , MASATAKA IRIE
Abstract: In a case where an A-BFT period is not present in a BI, a PCP/AP uses a format that includes an Unsolicited RSS Enabled sub-field for indicating support for responding to unsolicited RSSs within a CBAP, for a Beacon Interval Control field of a DMG beacon frame used for executing a BTI-ISS. For example, in a case where it is indicated that responding to unsolicited RSSs within a CBAP is supported, the PCP/AP sets the value of the Unsolicited RSS Enabled sub-field to 1. In a case where the value of the Unsolicited RSS Enabled sub-field included in a received DMG beacon frame is 1, a STA responds with an unsolicited CBAP-RSS.
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公开(公告)号：US20190280749A1
公开(公告)日：2019-09-12
申请号：US16423221
申请日：2019-05-28
Inventor： YAO HUANG GAIUS WEE , LEI HUANG , HIROYUKI MOTOZUKA , MASATAKA IRIE
Abstract: A wireless communication apparatus transmits a beacon frame during a beacon transmission interval (BTI), receives a transmission sector sweep (SSW) frame from another wireless communication apparatus, during a beamforming training (BFT) period following the BTI, extracts, in a case where information relating to a discovery request is included in the transmission SSW frame, information relating to a first transmission sector that is selected by the other wireless communication apparatus from among the transmission SSW frames, selects a second transmission sector from transmission sectors used by the other wireless communication apparatus, the transmission sectors being included in the transmission SSW frames, transmits a feedback frame including information regarding the selected second transmission sector, using the first transmission sector during the BFT period, and transmits a probe response frame including information regarding the selected second transmission sector, using the first transmission sector, during a data transmission period following the BFT period.
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公开(公告)号：US20190052395A1
公开(公告)日：2019-02-14
申请号：US16163674
申请日：2018-10-18
Inventor： HIROYUKI MOTOZUKA , NAGANORI SHIRAKATA , TAKENORI SAKAMOTO , MASATAKA IRIE
Abstract: A header encoding unit performs bit scramble and LDPC encoding on the PHY control data to generate L-Header and EDMG-Header data. A modulation unit encodes the L-Header and the E-Header output from the header encoding unit. In addition, the modulation unit duplicates the data of the L-Header and the E-Header in accordance with the bandwidth of the channel notified by an RF control unit and arranges the data on a plurality of channels. The modulation unit further modulates one piece of the payload data divided by a payload data dividing unit.
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10.发明申请公开(公告)号：US20180375558A1
公开(公告)日：2018-12-27
申请号：US16059879
申请日：2018-08-09
Inventor： HIROSHI TAKAHASHI , NAGANORI SHIRAKATA , MASATAKA IRIE
Abstract: When an STA receives first to fifth SSW frames (first training frames) transmitted from an AP, the STA measures reception quality thereof, and transmits a reception quality measurement result to the AP by incorporating the reception quality measurement result in an SSW-ACK frame (first feedback frame). In response, the AP selects a beam pattern satisfying a specific selection criterion based on the reception quality measurement result and employs the selected beam pattern as the transmission beam pattern for use in transmission to the STA.
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