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公开(公告)号：US11743837B2
公开(公告)日：2023-08-29
申请号：US17118506
申请日：2020-12-10
Applicant: QUALCOMM Incorporated
Inventor： Arjun Bharadwaj , Rahul Tandra , Bin Tian , Youhan Kim , Simone Merlin , George Cherian
IPC: H04W52/24 , H04W52/14 , H04L27/26 , H04B7/0452 , H04L1/00 , H04W52/22 , H04L5/00 , H04W52/36 , H04W52/26
CPC classification number: H04W52/242 , H04B7/0452 , H04L1/0009 , H04L5/0053 , H04L27/2601 , H04W52/143 , H04W52/146 , H04W52/228 , H04W52/262 , H04W52/265 , H04W52/362 , H04W52/367
Abstract: A method, an apparatus, and a computer-readable medium for wireless communication are provided. In one aspect, the apparatus is configured to determine a target receiver power level for uplink transmissions received at the apparatus, to determine uplink power control information based on the determined target receiver power level for UL MU-MIMO transmission or UL OFDMA transmission, and to transmit a frame that includes the determined uplink power control information to a station scheduled by the apparatus for uplink transmission.
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公开(公告)号：US11728848B2
公开(公告)日：2023-08-15
申请号：US17127890
申请日：2020-12-18
Applicant: QUALCOMM Incorporated
Inventor： Sameer Vermani , Bin Tian
IPC: H04B7/024 , H04L5/00 , H04B7/0452 , H04W72/044 , H04B7/0417 , H04W84/12 , H04W72/29 , H04B7/06 , H04W16/28 , H04W72/27
CPC classification number: H04B7/024 , H04B7/0417 , H04B7/0452 , H04L5/0035 , H04L5/0044 , H04L5/0091 , H04W72/046 , H04W72/29 , H04W84/12 , H04B7/0617 , H04B7/0626 , H04B7/0643 , H04L5/0007 , H04L5/0023 , H04L5/0051 , H04W16/28 , H04W72/27
Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for group formation and sounding for distributed multi-user multiple input multiple output (MU-MIMO). Some implementations include a method of wireless communication. The method includes transmitting, from a first access point of a plurality of access points, an announcement frame for performing a beamforming procedure for a distributed transmission. The distributed transmission includes a transmission from the plurality of access points. The announcement frame includes at least one identifier of a user terminal in a different basic service set than a basic service set of the first access point. The method further includes transmitting a packet for measuring a channel. The method further includes receiving feedback information from the user terminal based on the packet for measuring the channel. The method further includes transmitting the distributed transmission using the beamforming procedure.
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公开(公告)号：US11637723B2
公开(公告)日：2023-04-25
申请号：US17097812
申请日：2020-11-13
Applicant: QUALCOMM Incorporated
Inventor： Lin Yang , Bin Tian , Jialing Li Chen , Louay Jalloul , Vincent Knowles Jones, IV , Ning Zhang , Chi-Lin Su , Ahmad Abdulrahman Mohammed
IPC: H04L25/02 , H04L27/26 , H04W72/04 , H04L5/00 , H04W72/044
Abstract: Methods, systems, and devices for wireless communication are described. In some systems (e.g., Wi-Fi systems), a transmitting device such as an access point (AP) or mobile station (STA), may identify a number of spatial streams for a data transmission that is less than a number of transmit antennas, and may transmit a packet over a channel. In a first implementation, the packet may be formatted in a multi-user frame format, with a number of long training field (LTF) symbols equal to the number of transmit antennas. In a second implementation, the packet may be a null data packet (NDP), and the device may transmit a separate data packet. In a third implementation, the packet may be formatted in single-user frame format with a modified LTF. A receiving device may receive the packet, and may perform channel estimation and power amplifier (PA) distortion cancellation based on the received packet.
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公开(公告)号：US20230124579A1
公开(公告)日：2023-04-20
申请号：US17503215
申请日：2021-10-15
Applicant: QUALCOMM Incorporated
Inventor： Lin YANG , Bin Tian , Youhan Kim , Qifan Chen
Abstract: This disclosure provides methods, devices and systems for increasing the transmit power of wireless communication devices operating on power spectral density (PSD)-limited wireless channels. Some implementations more specifically relate to short training field (STF) designs and signaling that support distributed transmissions. A transmitting device that transmits data on a distributed resource unit (dRU) may transmit an STF sequence over a spreading bandwidth of the dRU according to an existing STF tone plan. Each STA allocated a dRU for transmission in a trigger-based (TB) physical layer convergence protocol (PLCP) protocol data unit (PPDU) maps its STF sequence to one or more spatial streams and may apply one or more global cyclic shift delays (CSDs) to the STF sequence mapped to the one or more spatial streams, respectively. As such, different global CSDs may be assigned to different STAs so that each STA transmits its STF sequence with different amounts of delay.
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公开(公告)号：US20230120347A1
公开(公告)日：2023-04-20
申请号：US18052188
申请日：2022-11-02
Applicant: QUALCOMM Incorporated
Inventor： Yanjun Sun , Bin Tian , Alfred Asterjadhi , George Cherian , Youhan Kim
IPC: H04L1/00 , H04W76/30 , H04L1/1607
Abstract: This disclosure provides systems, methods, and apparatuses for wireless communication that can be used for channel puncturing. A wireless station (STA) may receive an indication of a first puncturing pattern to be used for transmitting or receiving data over a wireless channel, where the first puncturing pattern is defined by a first wireless communication protocol release and the STA is configured to operate according to a second wireless communication protocol release. The STA may select, from a set of puncturing patterns defined by the second wireless communication protocol release, a second puncturing pattern that includes one or more non-punctured subchannels that are subsets of one or more corresponding non-punctured subchannels of the first puncturing pattern. The STA may use the second puncturing pattern to transmit or receive one or more packets over the wireless channel.
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Patent Agency Ranking
公开(公告)号：US11627027B2
公开(公告)日：2023-04-11
申请号：US17356330
申请日：2021-06-23
Applicant: QUALCOMM Incorporated
Inventor： Jialing Li Chen , Bin Tian , Youhan Kim , Cheng-Ming Chen
Abstract: A technique for wireless communication of a punctured null data packet with a long training field sequence is disclosed. The long training field (LTF) sequence is generated for the null data packet (NDP) for transmission over a channel having a bandwidth that is an integer multiple of 80 MHz. The LTF sequence is modulated onto a plurality of tones of the channel excluding tones within a punctured subchannel of a plurality of subchannels of the channel. The modulation may be based on a size and location of the punctured subchannel and a symbol duration associated with transmitting the LTF sequence. The NDP is transmitted including the LTF sequence to a second wireless communication device via the channel. A partial bandwidth feedback may be received in response to the LTF in the punctured NDP.
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公开(公告)号：US11601239B2
公开(公告)日：2023-03-07
申请号：US17180525
申请日：2021-02-19
Applicant: QUALCOMM Incorporated
Inventor： Stephen Jay Shellhammer , Bin Tian
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：US20230035113A1
公开(公告)日：2023-02-02
申请号：US17390850
申请日：2021-07-30
Applicant: QUALCOMM Incorporated
Inventor： Stephen Jay Shellhammer , Lin Yang , Yanjun Sun , Bin Tian
IPC: H04W72/04
Abstract: This disclosure provides methods, devices and systems for increasing the transmit power of wireless communication devices operating on power spectral density (PSD)-limited wireless channels. Some implementations more specifically relate to signaling in a trigger frame to support distributed transmissions via distributed resource units (dRUs). In some implementations, an access point (AP) may transmit a trigger frame soliciting a trigger-based (TB) physical layer convergence protocol (PLCP) protocol data unit (PPDU) from a wireless station (STA), where the trigger frame carries RU allocation information identifying a distributed resource unit (dRU) allocated for the STA and carries tone mapping information indicating a selected spreading bandwidth design for the wireless channel or subchannel. The AP can support channel puncturing by selecting a particular spreading bandwidth design that controls how dRUs are mapped to non-contiguous tones spanning respective spreading bandwidths.
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公开(公告)号：US11558098B2
公开(公告)日：2023-01-17
申请号：US17132091
申请日：2020-12-23
Applicant: QUALCOMM Incorporated
Inventor： Sameer Vermani , Bin Tian
IPC: H04W72/04 , 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：US11546938B2
公开(公告)日：2023-01-03
申请号：US16988624
申请日：2020-08-08
Applicant: QUALCOMM Incorporated
Inventor： Jialing Li Chen , Sameer Vermani , Lin Yang , Bin Tian , Vincent Knowles Jones, IV , Youhan Kim
Abstract: This disclosure provides methods, devices and systems for wireless communication, and particularly, methods, devices and systems for including signaling regarding enhanced features of new wireless communication protocols. The signaling may be included in various portions of a physical layer preamble of a wireless transmission. In some implementations, the physical layer preamble may be used to indicate puncturing of subbands or content channels that may carry further signaling in accordance with preamble signaling designs of this disclosure. The physical layer preamble signaling be parallelized for different subchannels of a wireless channel that consists of multiple subchannels. Some implementations of the physical layer preambles may be used to multiplex different types of wireless local area network communications into different subsets of the plurality of subchannels of the wireless channel.
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