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公开(公告)号：US12119900B2
公开(公告)日：2024-10-15
申请号：US18110543
申请日：2023-02-16
发明人： Yutaka Murakami , Hiroyuki Motozuka
IPC分类号： H04B7/0456 , H04B1/04 , H04L27/20
CPC分类号： H04B7/0456 , H04B1/0475 , H04L27/206
摘要： A transmission device includes: a weighting synthesizer that generates a first precoded signal and a second precoded signal from a first baseband signal and a second baseband signal, respectively; a phase changer that applies a phase change of i×Δλ to the second precoded signal; an inserter that inserts a pilot signal into the second precoded signal applied with the phase change; and a phase changer that applies a phase change to the second precoded signal applied with the phase change and inserted with the pilot signal. The weighting synthesizer performs, in the precoding process, a calculation that uses
F
=
(
e
j
θ
11
e
j
(
θ
11
+
π
4
)
e
j
θ
21
e
j
(
θ
21
+
π
+
π
4
)
)
on the first baseband signal and the second baseband signal modulated via a modulation scheme of QPSK.-
公开(公告)号：US11990975B2
公开(公告)日：2024-05-21
申请号：US18171182
申请日：2023-02-17
IPC分类号： H04B7/06 , H04B7/0456 , H04B7/08 , H04W16/28 , H04W40/24 , H04W72/044 , H04W72/0446 , H04W80/02 , H04W84/12
CPC分类号： H04B7/0695 , H04B7/0469 , H04B7/06 , H04B7/0617 , H04B7/0623 , H04B7/088 , H04W16/28 , H04W40/244 , H04W72/0446 , H04W72/046 , H04W80/02 , H04W84/12
摘要： A non-personal basic service set control point/access point (non-PCP/AP) communication apparatus includes a reception circuit, an estimation circuit, and a transmission circuit. The reception circuit receives a Directional Multi-Gigabit (DMG) Beacon frame including a sector sweep (SSW) field, the SSW field including a Parameter subfield indicating a value obtained by using a transmission Equivalent Isotropic Radiated Power (EIRP) of a PCP/AP communication partner apparatus and a reception antenna gain of the PCP/AP communication partner apparatus. The estimation circuit estimates an expected reception power at the PCP/AP communication partner apparatus by using the value of the Parameter subfield, and checks inequality between the estimated expected reception power and a receiver sensitivity value. The transmission circuit transmits a frame for Association Beamforming Training (A-BFT) if the estimated expected reception power is larger than the receive sensitivity value.
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公开(公告)号：US11855717B2
公开(公告)日：2023-12-26
申请号：US17966360
申请日：2022-10-14
发明人： Lei Huang , Hiroyuki Motozuka , Takenori Sakamoto
IPC分类号： H04B7/0413 , H04B1/38 , H04B7/06
CPC分类号： H04B7/0413 , H04B1/38 , H04B7/0617 , H04B7/0632 , H04B7/0686
摘要： An initiator device is provided with a generation circuit for supporting Single User (SU)-Multiple Input Multiple Output (MIMO) operation and generating a first signal including a value that indicates which of a reciprocal MIMO phase and a non-reciprocal MIMO phase is to be applied to SU-MIMO BF training, and a transmission circuit for transmitting the first signal to a responder device. The responder device is provided with a reception circuit for receiving the first signal from the initiator device, and a processing circuit for determining on the basis of the value which of the reciprocal MIMO phase and the non-reciprocal MIMO phase is to be applied to SU-MIMO BF training.
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公开(公告)号：US11700159B2
公开(公告)日：2023-07-11
申请号：US17496533
申请日：2021-10-07
CPC分类号： H04L27/2602 , H03M13/1102 , H04L1/0003 , H04L27/2605 , H04L27/2607 , H04L27/2628 , H04W72/0466 , H04W80/08 , H04L5/0007 , H04L27/2603
摘要： 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：US11595287B2
公开(公告)日：2023-02-28
申请号：US16436968
申请日：2019-06-11
摘要： A method for use of a wireless terminal device includes transmitting a Probe request frame by using a quasi-omni antenna pattern in a first channel if beam-forming training with a wireless base station device is not completed, selecting the wireless base station device as a connection destination if a Probe response frame corresponding to the Probe request frame is received from the wireless base station device, and performing the beam-forming training with the wireless base station device in a second channel if a time period for receiving the Probe response frame from the wireless base station device has passed.
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公开(公告)号：US11296912B2
公开(公告)日：2022-04-05
申请号：US16952777
申请日：2020-11-19
IPC分类号： H04L27/04 , H04B17/318 , H04B7/0408 , H04B7/0456 , H04L5/00 , H04L27/26
摘要： A transmission device that improves data reception quality includes: a weighting synthesizer that generates a first precoded signal and a second precoded signal from a first baseband signal and a second baseband signal, respectively; a phase changer that applies a phase change of i×Δλ to the second precoded signal; an inserter that inserts a pilot signal into the second precoded signal applied with the phase change; and a phase changer that applies a phase change to the second precoded signal applied with the phase change and inserted with the pilot signal. Δλ satisfies π/2 radians
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公开(公告)号：US11172538B2
公开(公告)日：2021-11-09
申请号：US16896719
申请日：2020-06-09
摘要： 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：US20210218446A1
公开(公告)日：2021-07-15
申请号：US17217765
申请日：2021-03-30
发明人： Hiroyuki Motozuka , Masataka Irie , Takenori Sakamoto , Naganori Shirakata , Yao Huang Gaius Wee , Michael Hong Cheng Sim , Lei Huang
摘要： A communication apparatus includes a PHY frame generating circuit that generates a PHY frame including either of a short Sector Sweep frame and a Sector Sweep frame; and an array antenna that selects, based on the PHY frame, any sector from among a plurality of sectors and transmits the PHY frame. In a case where, in the PHY frame including the short Sector Sweep frame, a Direction field of the short Sector Sweep frame indicates Initiator Sector Sweep, the PHY frame generating circuit replaces a Short Sector Sweep Feedback field indicating a number of a selected best short Sector Sweep with a Short Scrambled Basic Service Set ID field indicating an abbreviated address generated from an address of a destination communication apparatus.
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公开(公告)号：US11044131B2
公开(公告)日：2021-06-22
申请号：US16436091
申请日：2019-06-10
IPC分类号： H04L27/26 , H04L5/00 , H04B7/0456 , H04B7/06
摘要： A transmission device that improves data reception quality includes: a first pilot inserter that inserts a pilot signal into a first precoded signal; a phase changer that applies a phase change of i×Δλ to the second precoded signal, where i is a symbol number and an integer that is greater than or equal to 0; an inserter that inserts a pilot signal into the second precoded signal applied with the phase change; and a phase changer that applies a phase change to the second precoded signal applied with the phase change and inserted with the pilot signal. Δλ satisfies π/2 radians
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公开(公告)号：US10944463B2
公开(公告)日：2021-03-09
申请号：US16374622
申请日：2019-04-03
IPC分类号： H04B7/06 , H04W40/24 , H04W80/02 , H04W72/04 , H04W16/28 , H04B7/0456 , H04B7/08 , H04W84/12
摘要： A non-personal basic service point/access point (PCP/AP) communication device includes a reception circuit that receives a DMG Beacon frame, a judging circuit that judges whether or not to transmit a frame used for beamforming training (BFT), using information relating to reception antenna gain of a PCP/AP communication device included in a DMG Beacon frame and information relating to reception power of a DMG Beacon frame, and a transmission circuit that transmits the frame used for BFT in a case of the judging circuit having judged to transmit the frame used for BFT.
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