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公开(公告)号：US11974330B2
公开(公告)日：2024-04-30
申请号：US18326872
申请日：2023-05-31
Inventor： Rojan Chitrakar , Yoshio Urabe , Lei Huang , Michael Hong Cheng Sim
IPC: H04W74/08 , H04L5/00 , H04L27/26 , H04W28/02 , H04W72/21 , H04W72/566 , H04W74/0833 , H04L12/18 , H04L12/40 , H04L47/6275 , H04L51/226 , H04W72/0446
CPC classification number: H04W74/0833 , H04L5/0058 , H04L5/0092 , H04L27/26 , H04W28/0278 , H04W72/21 , H04W72/566 , H04W72/569 , H04W74/0841 , H04L5/0007 , H04L12/1822 , H04L12/40071 , H04L47/6275 , H04L51/226 , H04W72/0446
Abstract: The present disclosure relates to the prioritization of devices taking part in a multi-user random access wireless communication. Based on some known conditions, devices that comply with the conditions are given preferential treatment during the random access period. The preferential treatment may refer to the eligible devices being allowed to access more resource units during the random access, or it may also mean faster access to the medium during the random access. By taking advantage of the methods described in the present disclosure, it is possible to assign higher priority to selected frame types and/or device categories in a multi-user random access wireless communication system.
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公开(公告)号：US11564261B2
公开(公告)日：2023-01-24
申请号：US17387827
申请日：2021-07-28
Inventor： Takashi Iwai , Tomohumi Takata , Yoshio Urabe
Abstract: A communication apparatus includes signal generation circuitry which, in operation, generates a control signal including a plurality of user specific fields, each of the plurality of user specific fields including an Association ID (AID) subfield for specifying a corresponding terminal station, and transmission circuitry which, in operation, transmits the control signal, wherein one of a plurality of AIDs for scheduled access or one of a plurality of random access IDs for random access is assigned to the AID subfield in each of the plurality of user specific fields, and each value of the plurality of random access IDs indicates a type of a terminal station which can perform random access to the at least one resource unit.
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公开(公告)号：US10862635B2
公开(公告)日：2020-12-08
申请号：US15890863
申请日：2018-02-07
Inventor： Lei Huang , Hong Cheng Michael Sim , Yoshio Urabe
IPC: H04W4/00 , H04L5/00 , H04W84/12 , H04B7/0404 , H04B7/0452 , H04W72/08 , H04B7/06 , H04L25/02 , H04W16/28 , H04W72/04
Abstract: A communication method of the present disclosure comprises transmitting a sounding frame comprising a training signal; and receiving a first feedback frame from a communication partner device, the first feedback frame comprising first beamforming feedback information, wherein the first feedback frame is transmitted together with at least one second feedback frame by multiuser transmission.
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公开(公告)号：US10582542B2
公开(公告)日：2020-03-03
申请号：US16029164
申请日：2018-07-06
Inventor： Rojan Chitrakar , Yoshio Urabe , Lei Huang , Michael Hong Cheng Sim
IPC: H04W74/08 , H04L12/18 , H04L12/58 , H04L12/40 , H04L12/865
Abstract: The present disclosure relates to the prioritization of devices taking part in a multi-user random access wireless communication. Based on some known conditions, devices that comply with the conditions are given preferential treatment during the random access period. The preferential treatment may refer to the eligible devices being allowed to access more resource units during the random access, or it may also mean faster access to the medium during the random access. By taking advantage of the methods described in the present disclosure, it is possible to assign higher priority to selected frame types and/or device categories in a multi-user random access wireless communication system.
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公开(公告)号：US12088449B2
公开(公告)日：2024-09-10
申请号：US17895977
申请日：2022-08-25
Inventor： Lei Huang , Michael Hong Cheng Sim , Yoshio Urabe
IPC: H04L27/26
CPC classification number: H04L27/2647 , H04L27/2602 , H04L27/2603 , H04L27/2613
Abstract: A transmission apparatus comprises circuitry that generates a physical protocol data unit (PPDU) that contains a legacy signal field and a first signal field wherein both of the legacy signal field and the first signal field comprise an Orthogonal Frequency Division Multiplexing (OFDM) symbol, and the first signal field is derived from the legacy signal field, and a transmitter, which, in operation, transmits the PPDU. A format of the PPDU is indicated based on whether a part of bits of the first signal field is inverted or not. The format of the PPDU is a first format or a second format, and data subcarriers of the first signal field in the second format have inverted values of corresponding values in the legacy signal field, and pilots of the first signal field in the second format are not inverted and have same values of corresponding values in the legacy signal field.
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Patent Agency Ranking
公开(公告)号：US11889529B2
公开(公告)日：2024-01-30
申请号：US18155637
申请日：2023-01-17
Inventor： Lei Huang , Hong Cheng Michael Sim , Yoshio Urabe , Isamu Yoshii
CPC classification number: H04W72/23 , H04J11/0069 , H04L1/0046 , H04L5/001 , H04L5/005 , H04L5/0035 , H04L5/0044 , H04L5/0051 , H04L5/0053 , H04L5/0091 , H04L5/0094 , H04W40/24 , H04W74/004 , H04L5/0007
Abstract: A transmission apparatus comprises an assignment information generator which, in operation, assigns resources on a resource unit (RU) basis to one or more terminal stations (STAs) and generates assignment information that specifies RUs allocated to the one or more STAs; a transmission signal generator which, in operation, generates a transmission signal that includes a legacy preamble, a non-legacy preamble and a data field, wherein the non-legacy preamble comprises a first signal field and a second signal field that carry a set ID and the assignment information, and wherein the set ID identifies one assignment set comprising the one or more STAs and a plurality of assignment indices, and wherein the assignment information comprises a resource assignment indication for each of a plurality of assignment which are referenced by the plurality of assignment indices; and a transmitter which, in operation, transmits the generated transmission signal.
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公开(公告)号：US11765665B2
公开(公告)日：2023-09-19
申请号：US17241837
申请日：2021-04-27
Inventor： Tomohumi Takata , Yoshio Urabe , Takashi Iwai
CPC classification number: H04W52/18 , H04W52/146 , H04W52/247 , H04W52/325 , H04W52/58 , H04B7/0452 , H04W52/362 , H04W74/08
Abstract: A communication apparatus includes: signal generation circuitry which, in operation, generates a control signal including a target reception power value regarding a target value of a reception power for the communication apparatus to receive an uplink (UL) response frame transmitted by each of one or more terminal stations, the control signal being a trigger frame that solicits transmission of the UL response frame from each of the one or more terminal stations; and transmission circuitry which, in operation, transmits the generated signal.
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公开(公告)号：US11722349B2
公开(公告)日：2023-08-08
申请号：US17668107
申请日：2022-02-09
Inventor： Lei Huang , Michael Hong Cheng Sim , Yoshio Urabe
IPC: H04L27/26
CPC classification number: H04L27/2647 , H04L27/2602 , H04L27/2603 , H04L27/2613
Abstract: A transmission apparatus comprises circuitry that generates a physical protocol data unit (PPDU) that contains a legacy signal field and a first signal field wherein both of the legacy signal field and the first signal field comprise an Orthogonal Frequency Division Multiplexing (OFDM) symbol, and the first signal field is derived from the legacy signal field, and a transmitter, which, in operation, transmits the PPDU. A format of the PPDU is indicated based on whether a part of bits of the first signal field is inverted or not. The format of the PPDU is a first format or a second format, and data subcarriers of the first signal field in the second format have inverted values of corresponding values in the legacy signal field, and pilots of the first signal field in the second format are not inverted and have same values of corresponding values in the legacy signal field.
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9.发明授权公开(公告)号：US11689406B2
公开(公告)日：2023-06-27
申请号：US17558367
申请日：2021-12-21
Inventor： Lei Huang , Yoshio Urabe , Michael Hong Cheng Sim
CPC classification number: H04L27/2613 , H04L1/00 , H04L1/0041 , H04L1/0083 , H04L5/0007 , H04L5/0037 , H04L5/0046 , H04L5/0094 , H04L27/26 , H04L27/2662 , H04L1/0057 , H04L5/0023 , H04L5/0044 , H04L5/0053 , H04L27/2605
Abstract: A transmission method comprises: generating a transmission signal including OFDM symbols, wherein the last OFDM symbol of the OFDM symbols can be partitioned into four segments, and wherein the generating includes: computing an initial padding factor value associated with one of the four segments and computing an initial number of OFDM symbols; determining a user with a longest packet duration among plural users; determining a common padding factor value being the initial padding factor value and a common number of OFDM symbols being the initial number of OFDM symbols of the determined user with the longest packet duration; adding pre-FEC padding bits toward one of four possible boundaries of the last OFDM symbol, the one of four possible boundaries being represented by the determined common padding factor value; and adding post-FEC padding bits in remaining segment(s) of the last OFDM symbol; and transmitting the generated transmission signal.
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公开(公告)号：US11627029B2
公开(公告)日：2023-04-11
申请号：US17884440
申请日：2022-08-09
Inventor： Lei Huang , Yoshio Urabe , Michael Hong Cheng Sim
IPC: H04L27/26 , H04B7/0452 , H04L1/00 , H04L5/00 , H04W72/12
Abstract: An transmission apparatus of the present disclosure comprises a transmission signal generator which, in operation, generates a transmission signal that includes a legacy preamble, a non-legacy preamble and a data field, wherein the non-legacy preamble comprises a first signal field and a second signal field, the second signal field comprising a first channel field and a second channel field, each of the first channel field and the second channel field comprising a common field that carries resource unit (RU) allocation information and a user-specific field that carries per-user allocation information for one or more terminal stations, and wherein a part of the user-specific field of one of the first channel field and the second channel field whichever is longer than the other channel field in length before appending padding bits is relocated to the other channel field; and a transmitter which, in operation, transmits the generated transmission signal.
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