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公开(公告)号：US20230388986A1
公开(公告)日：2023-11-30
申请号：US17828085
申请日：2022-05-31
Applicant: QUALCOMM Incorporated
Inventor： Lin YANG , Jialing Li CHEN , Bin TIAN , Youhan KIM
CPC classification number: H04W72/0453 , H04L5/0044 , H04L5/0078 , H04L27/2602
Abstract: This disclosure provides methods, devices and systems for increasing carrier frequencies for wireless communications in wireless local area networks (WLANs). Some implementations more specifically relate to packet designs that support wireless communications on carrier frequencies above 7 GHz. In some aspects, a wireless communication device may map a physical layer convergence protocol (PLCP) protocol data unit (PPDU) to orthogonal subcarriers according to existing tone plans associated with carrier frequencies below 7 GHz and may up-clock the PPDU for transmission on carrier frequencies above 7 GHz (such as by increasing the frequency of a clock signal used to convert the PPDU between the frequency domain and the time domain). In some implementations, the PPDU may conform to an existing PPDU format designed for sub-7 GHz wireless communications. In some other implementations, the PPDU may conform to a “green field” PPDU format optimized for wireless communications on carrier frequencies above 7 GHz.
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公开(公告)号：US20230283422A1
公开(公告)日：2023-09-07
申请号：US18174226
申请日：2023-02-24
Applicant: QUALCOMM Incorporated
Inventor： Stephen Jay SHELLHAMMER , Bin TIAN
CPC classification number: H04L5/0044 , H04L27/2607
Abstract: This disclosure provides methods, devices and systems for wireless communication, and particularly, methods, devices and systems for physical (PHY) layer control signaling. A first physical layer convergence protocol (PLCP) protocol data unit (PPDU) may precede a second PPDU. The first PPDU may be referred to as a PHY control PPDU and may include a physical layer control signaling field (CNT-SIG) that informs one or more stations (STAs) regarding a physical layer configuration they should use for the second PPDU. The PHY control PPDU may enable dynamic subchannel assignments for one or more identified STAs, legacy STAs, or sub-bandwidth operating devices. The techniques of this disclosure may enable sharing of a wide bandwidth wireless channel by different types of devices or different basic service sets (BSSs) assigned to different subchannels of the wireless channel.
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公开(公告)号：US20230069075A1
公开(公告)日：2023-03-02
申请号：US17402475
申请日：2021-08-13
Applicant: QUALCOMM Incorporated
Inventor： Lin YANG , Bin TIAN , Youhan KIM , Qifan CHEN
Abstract: This disclosure provides methods, devices and systems for distributed transmission of short training fields in a power spectral density limited frequency band. In one aspect, a device receives a distributed resource unit (dRU) assignment for transmission of a dRU portion of a physical layer protocol data unit (PPDU); determines a spatial stream global cyclic shift delay (CSD) index for an short training field (STF) of the dRU portion of the PPDU; and transmits, based on the spatial stream global CSD index, the EHT of the dRU portion of the PPDU across a dRU spreading bandwidth associated with the dRU assignment using a tone plan and sequence corresponding to a regular resource unit (rRU) transmission mode.
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公开(公告)号：US20220030625A1
公开(公告)日：2022-01-27
申请号：US17382242
申请日：2021-07-21
Applicant: QUALCOMM Incorporated
Inventor： Lin YANG , Bin TIAN , Youhan KIM
Abstract: This disclosure provides methods, devices and systems for clear channel assessment (CCA). In one aspect a device performs a first clear channel assessment (CCA) check on a primary subchannel of a channel having a total bandwidth greater than or equal to 40 megahertz (MHz), a plurality of subchannels of the channel collectively spanning the total bandwidth of the channel, the plurality of subchannels including the primary subchannel and one or more secondary subchannels, the primary subchannel and the one or more secondary subchannels each having a bandwidth of 20 MHz, performs, on each of the one or more secondary subchannels, a respective second CCA check, and transmits a communication on the channel based on a status of each of the primary subchannel and the one or more secondary subchannels that is based on the performance of the respective second CCA check or the first CCA check.
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公开(公告)号：US20210410188A1
公开(公告)日：2021-12-30
申请号：US17335243
申请日：2021-06-01
Applicant: QUALCOMM Incorporated
Inventor： Lin YANG , Youhan KIM , Bin TIAN
Abstract: This disclosure provides systems, methods, and apparatuses for wireless communication that can be used to reduce the peak-to-average power ratio (PAPR) of data transmissions by increasing the degree of randomness with which data is scrambled for transmission over a wireless medium. In some implementations, a transmitting device may determine a scrambler seed value that includes at least 11 bits, where at least one of the 7 least significant bits (LSBs) of the scrambler seed value has a non-zero value. The transmitting device may generate a scrambling sequence based on the scrambler seed value and a polynomial, may construct a physical layer convergence protocol (PLCP) protocol data unit (PPDU) that includes a multi-user (MU) request-to-send (RTS) frame and the scrambler seed value, may scramble one or more portions of the PPDU based on the scrambling sequence; and may transmit the PPDU over a wireless medium.
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Patent Agency Ranking
公开(公告)号：US20210184743A1
公开(公告)日：2021-06-17
申请号：US17132091
申请日：2020-12-23
Applicant: QUALCOMM Incorporated
Inventor： Sameer VERMANI , Bin TIAN
IPC: H04B7/06 , H04L25/02 , H04B7/0452 , H04B7/024
Abstract: Certain aspects relate to methods and apparatus for wireless communication. The apparatus generally includes a first interface configured to output one first frame for transmission to solicit CSI feedback from each of one or more first wireless nodes associated with a first BSS and from each of one or more second wireless nodes associated with a second BSS, a second interface configured to obtain the CSI feedback solicited from the first and second wireless nodes, and a processing system configured to generate data frames for the first wireless nodes based on the CSI feedback solicited from the first wireless nodes, and one or more nulling frames based on the CSI feedback solicited from the second wireless nodes. The first interface is configured to simultaneously output the data frames for beamformed transmission to the first wireless nodes, and the nulling frames for beamformed transmission to the second wireless nodes.
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公开(公告)号：US20210083918A1
公开(公告)日：2021-03-18
申请号：US17102422
申请日：2020-11-23
Applicant: QUALCOMM Incorporated
Inventor： Lin YANG , Jialing Li CHEN , Bin TIAN
Abstract: This disclosure provides methods, devices, and systems for a wireless communication device to perform signal phase rotation. In some implementations, the wireless communication device may determine a number of phase rotation parameters to be applied to a number of tones of a transmission signal. In some aspects, each of the phase rotation parameters indicates a phase rotation to be applied to each of the tones according to a carrier index range for each of the tones and a bandwidth mode for the transmission signal. In some implementations, the wireless communication device may apply the phase rotation parameters to respective ones of the tones according to the specified phase rotations and the carrier index ranges, and transmit the transmission signal from the wireless communication device according to the applied phase rotation parameters.
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公开(公告)号：US20210006980A1
公开(公告)日：2021-01-07
申请号：US16928917
申请日：2020-07-14
Applicant: QUALCOMM Incorporated
Inventor： Sameer VERMANI , Bin TIAN , Jialing Li CHEN , Lin YANG
IPC: H04W16/10 , H04B7/024 , H04B7/0417 , H04B7/0452 , H04B7/06
Abstract: Certain aspects relate to methods and apparatus for wireless communication. The apparatus generally includes a processing system configured to generate a first frame including an indication of unused resources in a first basic service set (BSS) available to be shared with one or more wireless nodes in one or more second BSSs. The apparatus also includes a first interface configured to output the first frame for transmission to the one or more wireless nodes.
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公开(公告)号：US20200169964A1
公开(公告)日：2020-05-28
申请号：US16775125
申请日：2020-01-28
Applicant: QUALCOMM Incorporated
Inventor： Yan ZHOU , Bin TIAN , Gwendolyn Denise BARRIAC , Alfred ASTERJADHI , Simone MERLIN , George CHERIAN
Abstract: A method, an apparatus, and a computer-readable medium for wireless communication are provided. In one aspect, the example method may include generating a data frame including a Medium Access Control (MAC) header or a physical layer (PHY) header. The MAC header or the PHY header of the data frame may include transmit power related information. The transmit power related information may include at least one of: a maximum transmit power, power backoff per modulation and coding scheme information, or an actual transmit power. The method may include transmitting the data frame to a second device.
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公开(公告)号：US20200045560A1
公开(公告)日：2020-02-06
申请号：US16515978
申请日：2019-07-18
Applicant: QUALCOMM Incorporated
Inventor： Sameer VERMANI , Bin TIAN , Lin YANG
Abstract: This disclosure provides systems, methods and apparatuses for concurrently transmitting beamformed data from each of a plurality of access points (APs) to a wireless station (STA). In some implementations, the plurality of APs may operate as a distributed antenna array, and carrier signals of the plurality of APs may be synchronized with each other. A beamforming steering matrix may be determined for each of the plurality of APs, and beamformed data may be concurrently transmitted from each of the plurality of APs to the STA based on corresponding ones of the plurality of beamforming steering matrices.
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