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公开(公告)号：US20230007618A1
公开(公告)日：2023-01-05
申请号：US17945063
申请日：2022-09-14
申请人： Marvell Asia Pte Ltd
发明人： Liwen CHU , Hongyuan ZHANG , Christian R. BERGER , Niranjan GRANDHE , Sudhir SRINIVASA , Hui-Ling LOU
摘要： A first client station receives from an access point an indication of whether angular information is to be included in feedback information in a range measurement session. The first client station transmits a null data packet (NDP) as part of an uplink multi-user (MU) PHY transmission that also includes simultaneous transmissions by one or more second client stations of one or more other respective NDPs to the access point as part of the range measurement session. The first client station receives a downlink physical layer (PHY) data unit from the access point that includes respective downlink feedback frames for the first client station and the one or more second client stations. When angular information is to be included in the feedback, a downlink feedback frame for the first client station includes angular information.
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公开(公告)号：US20220124727A1
公开(公告)日：2022-04-21
申请号：US17566449
申请日：2021-12-30
申请人： Marvell Asia Pte Ltd
摘要： A first communication device in a first WLAN determines a channel estimate of a communication channel between the first communication device and a second communication device in a second WLAN using measurements at the first communication device of a first transmission between the second communication device and a third communication device in the second WLAN. The first communication device generates a PPDU for transmission to a fourth communication device in the first WLAN, including: determining, using the channel estimate, a precoder matrix to use for transmitting the PPDU in the first WLAN, and generating the PPDU using the precoder matrix so that interference at the second communication device in the second WLAN caused by transmission of the PPDU by the first communication device in the first WLAN is reduced. The first communication device transmits the PPDU to the fourth communication device in the first WLAN as a directional second transmission.
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公开(公告)号：US20240196423A1
公开(公告)日：2024-06-13
申请号：US18584680
申请日：2024-02-22
申请人： Marvell Asia Pte Ltd
IPC分类号： H04W72/542 , H04L25/02 , H04W24/04 , H04W24/08 , H04W72/541 , H04W84/12
CPC分类号： H04W72/542 , H04L25/0202 , H04W24/04 , H04W24/08 , H04W72/541 , H04W84/12
摘要： An access point (AP) device that serves a wireless local area network (WLAN) determines that a coverage area of the AP device is partitioned into a plurality of sectors, the coverage area corresponding to the WLAN. The AP device determines that a first transmission is occurring within a first sector among the plurality of sectors, and determines that a client station is located in a second sector among the plurality of sectors, the second sector different than the first sector. In response to determining that the first transmission is occurring within the first sector, the AP device selects the client station for a directional second transmission in a direction i) within the second sector and ii) outside of the first sector, and transmits the directional second transmission to the client station in the second sector while the first transmission in the first sector is occurring.
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公开(公告)号：US20230421295A1
公开(公告)日：2023-12-28
申请号：US18244792
申请日：2023-09-11
申请人： Marvell Asia Pte Ltd
发明人： Hongyuan ZHANG , Hui-Ling LOU , Rohit U. NABAR , Sudhir SRINIVASA , Mao YU , Raja BANERJEA
CPC分类号： H04L1/0079 , H04L27/2613 , H04L1/0072 , H04L1/009 , H04L69/18 , H04W28/06 , H04W84/12
摘要： A preamble of physical layer (PHY) data unit includes a first legacy portion and a first non-legacy portion that follows the first legacy portion. The first non-legacy portion includes i) a first orthogonal frequency division multiplexing (OFDM) symbol that immediately follows the first legacy portion and that is modulated using binary phase shift keying (BPSK), and ii) a second OFDM symbol that immediately follows the first OFDM symbol and that is modulated using BPSK modulation rotated by 90 degrees (Q-BPSK). The modulation of the first and second OFDM symbols indicates to a receiver device that conforms to a first communication protocol that the data unit conforms to the first communication protocol. The first OFDM symbol being modulated using BPSK modulation causes a receiver device that conforms to a second communication protocol to determine that the PHY data unit conforms to a third communication protocol.
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公开(公告)号：US20210112518A1
公开(公告)日：2021-04-15
申请号：US17131181
申请日：2020-12-22
发明人： Liwen CHU , Hongyuan ZHANG , Christian R. BERGER , Niranjan GRANDHE , Sudhir SRINIVASA , Hui-Ling LOU
摘要： A first communication device determines which one or more types of feedback information, from among a plurality of types of feedback information associated with a range measurement exchange session, a second communication device is to provide to the first communication device in a feedback packet transmitted as part of the range measurement exchange session. The first communication device transmits to the second communication device one or more indications of the determined one or more types of feedback information that the second communication device is to provide to the first communication device in the feedback packet. The first communication device performs the range measurement exchange, including receiving the feedback packet from the second communication device, wherein the feedback packet includes the determined one or more types of feedback information.
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公开(公告)号：US20210288754A1
公开(公告)日：2021-09-16
申请号：US17334496
申请日：2021-05-28
发明人： Hongyuan ZHANG , Hui-Ling LOU , Rohit U. NABAR , Sudhir SRINIVASA , Mao YU , Raja BANERJEA
摘要： A first portion of a physical layer (PHY) preamble of a PHY data unit is generated for transmission via a communication channel that comprises a plurality of sub-channels. A first portion of the PHY preamble is generated to include a legacy portion and a plurality of first non-legacy signal fields spanning the respective sub-channels. A second portion of a PHY preamble that immediately follows the first portion of the PHY preamble of the PHY data unit is generated to include: a non-legacy short training field spanning all sub-channels in the plurality of sub-channels, a plurality of non-legacy long training fields immediately following the non-legacy short training field, each non-legacy training field spanning all sub-channels in the plurality of sub-channels, and a second non-legacy signal field immediately following the plurality of non-legacy long training fields, the second-legacy signal field spanning all sub-channels in the plurality of sub-channels.
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公开(公告)号：US20200329519A1
公开(公告)日：2020-10-15
申请号：US16847092
申请日：2020-04-13
发明人： Rui CAO , Hongyuan ZHANG , Sudhir SRINIVASA
摘要： A first aggregated MAC protocol data unit (A-MPDU) is generated for transmission over a first frequency segment of a communication channel, and a second A-MPDU is generated for transmission over a second frequency segment of the communication channel. A PHY protocol data unit (PPDU) is generated to include the plurality of A-MPDUs and a second PPDU is generated to include the second A-MPDU. A first transmit processor generates a first RF signal for transmission of the first PPDU over the first frequency segment and a second transmit processor generates a second RF signal for transmission of the second PPDU over the second frequency segment. The first RF signal is transmitted in the first frequency segment simultaneously with the second RF signal being transmitted in the second frequency segment.
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