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公开(公告)号：US20220377727A1
公开(公告)日：2022-11-24
申请号：US17816370
申请日：2022-07-29
Applicant: QUALCOMM Incorporated
Inventor： Lin YANG , Bin TIAN , Dung Ngoc DOAN
Abstract: This disclosure provides methods, devices and systems for amplitude shaping encoding, and specifically, for indicating boundaries in bitstreams encoded using amplitude shaping encoding. In some aspects, a transmitting device may insert, into an bitstream to indicate a boundary, a sequence of amplitude bits not associated with any patterns of bit values in a lookup table used for the encoding. In some other aspects, a transmitting device may monitor a length of the amplitude bits in a bitstream during the encoding and stop the encoding on information bits at an end of a current data unit responsive to the length reaching a threshold. In some other aspects, a transmitting device may monitor the length of the information bits and, for each data unit, determine whether a boundary is or would be reached. Responsive to determining that a boundary is or would be reached, the transmitting device may not include, before the boundary, any amplitude bits generated based on the information bits in the data unit, and instead add padding bits after a last amplitude bit before the boundary.
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公开(公告)号：US20220353049A1
公开(公告)日：2022-11-03
申请号：US17245471
申请日：2021-04-30
Applicant: QUALCOMM Incorporated
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 trigger frame and physical layer convergence protocol (PLCP) protocol data unit (PPDU) designs that support distributed transmission. In some implementations, an access point (AP) may transmit a trigger frame soliciting a trigger-based (TB) PPDU from a wireless station (STA), where the trigger frame carries RU allocation information indicating a number (N) of tones allocated for the STA and carries tone distribution information indicating whether the N tones are allocated for a contiguous transmission or a distributed transmission. In some other implementations, an AP or a STA may transmit a PPDU carrying distributed signaling information indicating whether the PPDU is transmitted as a contiguous transmission or a distributed transmission.
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公开(公告)号：US20210288769A1
公开(公告)日：2021-09-16
申请号：US17196557
申请日：2021-03-09
Applicant: QUALCOMM Incorporated
Abstract: This disclosure provides systems, methods, and apparatuses for wireless communication. An example apparatus selects a first resource unit (RU) of a plurality of RUs for transmitting a physical (PHY) layer convergence protocol (PLCP) protocol data unit (PPDU) over a wireless medium. The first RU may include a set of contiguous tones occupying a first frequency bandwidth. The plurality of RUs may collectively span a second frequency bandwidth greater than the first frequency bandwidth. The apparatus maps the set of contiguous tones of the first RU to a set of non-contiguous tones distributed across the second frequency bandwidth using a tone mapping vector and a tone mapping offset associated with the first RU. The apparatus transmits the PPDU over the set of non-contiguous tones distributed across the second frequency bandwidth.
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公开(公告)号：US20210288768A1
公开(公告)日：2021-09-16
申请号：US17196396
申请日：2021-03-09
Applicant: QUALCOMM Incorporated
Inventor： Lin YANG , Bin TIAN , Youhan KIM , Vincent Knowles JONES, IV , Tevfik YUCEK
Abstract: This disclosure provides systems, methods, and apparatuses for wireless communication. An example apparatus selects a resource unit (RU) for a physical (PHY) layer convergence protocol (PLCP) protocol data unit (PPDU). The selected RU includes a set of contiguous tones spanning a bandwidth. The apparatus maps the set of contiguous tones to a set of non-contiguous tones distributed across the frequency spectrum, and transmits the PPDU over the set of non-contiguous tones. Another example apparatus selects an RU of a group of RUs that collectively span a frequency spectrum, and formats a PPDU based on a first frequency bandwidth wider than the selected RU's bandwidth. The apparatus parses the contiguous tones of the selected RU to a set of non-contiguous tones spanning a unique segment of a second frequency bandwidth wider than the first frequency bandwidth, and schedules a transmission of the PPDU over the set of non-contiguous tones.
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公开(公告)号：US20210266204A1
公开(公告)日：2021-08-26
申请号：US17176517
申请日：2021-02-16
Applicant: QUALCOMM Incorporated
Inventor： Jialing Li CHEN , Bin TIAN , Lin YANG
IPC: H04L25/03
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 set of scrambling initialization bits, and may generate a scrambling sequence based on the set of scrambling initialization bits and an 11th-order polynomial. The transmitting device may provide an indication of the set of scrambling initialization bits in a physical layer convergence protocol (PLCP) protocol data unit (PPDU). The transmitting device may scramble one or more portions of the PPDU based on the scrambling sequence. The transmitting device may transmit the PPDU over a wireless medium. In some instances, the set of scrambling initialization bits consists of 11 bits, and may be included in a Service field of the PPDU.
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Patent Agency Ranking
公开(公告)号：US20210243058A1
公开(公告)日：2021-08-05
申请号：US17163771
申请日：2021-02-01
Applicant: QUALCOMM Incorporated
Inventor： Dung Ngoc DOAN , Lin YANG , Bin TIAN
Abstract: This disclosure provides methods, devices and systems for encoding data for wireless communication to achieve probabilistic amplitude shaping. In some implementations, a transmitting device may achieve a fixed information block length (N), at least in part, by iteratively encoding the information bits until the number of amplitude-shaped bits combined with the number of unshaped bits is greater than or equal to a maximum payload length. For example, the maximum payload length may be equal to N. If the resulting number of amplitude-shaped bits plus the number of unshaped bits is less than N, the transmitting device may add one or more padding bits to the information block to achieve the fixed information block length.
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公开(公告)号：US20200336341A1
公开(公告)日：2020-10-22
申请号：US16786890
申请日：2020-02-10
Applicant: QUALCOMM Incorporated
Inventor： Bin TIAN , Lin YANG , Sameer VERMANI
IPC: H04L25/02 , H04L27/26 , H04B7/0417 , H04B7/06 , H04B7/0452
Abstract: This disclosure provides methods, devices and systems for providing channel feedback for multiple spatial streams. In some implementations, the techniques involve generating distinct channel estimates for different respective sets of orthogonal spatial streams. In some implementations, the orthogonality of the different sets of orthogonal spatial streams enables the beamformee to distinguish the spatial streams to provide the separate channel estimates. The beamformee may then determine separate correlations for the different respective sets of spatial streams. In some implementations, the beamformee combines the correlations to determine an average correlation for each of a number of sets of frequency tones. The beamformee may then perform an eigenvalue decomposition on a tone-by-tone basis based on the respective average correlation and the channel estimate obtained for the tone. Because the eigenvalue decomposition may be performed on each of the two sets of spatial streams separately, the complexity involved with performing each eigenvalue decomposition is greatly reduced.
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78.发明申请公开(公告)号：US20170238232A1
公开(公告)日：2017-08-17
申请号：US15434901
申请日：2017-02-16
Applicant: QUALCOMM Incorporated
Inventor： Lin YANG , Bin TIAN , Youhan KIM
CPC classification number: H04W40/02 , H04L1/0005 , H04L1/0011 , H04L1/0015 , H04L1/20 , H04L5/0007 , H04L5/0037 , H04L5/0044 , H04L5/0073 , H04W28/20 , H04W52/22 , H04W72/044
Abstract: A method, an apparatus, and a computer-readable medium for wireless communication are provided. In one aspect, an apparatus is configured to determine an RU allocated to the apparatus within a communication bandwidth for OFDMA transmission. The apparatus is configured to transmit a data packet on the allocated RU based on requirements associated with an amount of inter-RU interference to other RUs allocated to other wireless devices. In an aspect, the requirements may include at least one of an error vector magnitude (EVM) requirement or a spectral mask requirement.
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79.发明申请公开(公告)号：US20170201975A1
公开(公告)日：2017-07-13
申请号：US15400649
申请日：2017-01-06
Applicant: QUALCOMM Incorporated
IPC: H04W72/04 , H04L29/06 , H04L29/08 , H04B7/0452
CPC classification number: H04W72/046 , H04B7/0452 , H04B7/0671 , H04L69/22 , H04L69/324 , H04W88/08
Abstract: A method, an apparatus, and a computer-readable medium for wireless communication are provided. In one aspect, the apparatus may determine whether to transmit a frame with CSDs based on a number of antennas, a number of streams, or both. In another aspect, the apparatus may determine a first set of CSD values for transmitting a first set of information associated with a first portion of the frame. In a further aspect, the apparatus may determine a second set of CSD values for transmitting a second set of information associated with a second portion of the frame. In yet another aspect, the apparatus may transmit the first set of information based on the first set of CSD values and the second set of information based on the second set of CSD values using the number of antennas, the number of streams, or both.
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公开(公告)号：US20250150205A1
公开(公告)日：2025-05-08
申请号：US18502880
申请日：2023-11-06
Applicant: QUALCOMM Incorporated
Inventor： Lin YANG , Tzu-Hsuan CHOU , Bin TIAN
Abstract: This disclosure provides methods, components, devices and systems for modulation of extended long range wireless packets. Some aspects more specifically relate to communicating packets in an extended long range (ELR) communication mode. A wireless communication device may receive an indication to transmit a single-user wireless packet associated with the ELR communication mode, where the single-user wireless packet includes a preamble portion and a data portion. At least the data portion may be associated with a duplication scheme pertaining to the ELR communication mode. The wireless communication device may transmit, in accordance with the indication, the single-user wireless packet using a first quantity of duplications of at least the data portion in accordance with the duplication scheme, where the first quantity of duplications is associated with the ELR communication mode. Additionally, or alternatively, the wireless communication device may transmit the single-user wireless packet in accordance with a distributed resource unit (dRU).
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