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公开(公告)号：US20250141641A1
公开(公告)日：2025-05-01
申请号：US19009357
申请日：2025-01-03
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：US20250088398A1
公开(公告)日：2025-03-13
申请号：US18957647
申请日：2024-11-22
Applicant: QUALCOMM Incorporated
Inventor： Lin YANG , Bin TIAN , Youhan KIM , Jialing Li CHEN
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 and numerologies that support wireless communications on carrier frequencies above 7 GHz. In some aspects, a wireless communication device may up-clock a physical layer (PHY) convergence protocol (PLCP) protocol data unit (PPDU) for transmission on carrier frequencies above 7 GHz, where the PPDU conforms to an existing PPDU format associated with carrier frequencies below 7 GHz. As used herein, the term “up-clocking” refers to increasing the frequency of a clock signal used to convert the PPDU between the frequency domain and the time domain. In some aspects, the up-clocking may result in a subcarrier spacing (SCS) greater than or equal to 1.2 MHz, where the SCS represents a spacing between the subcarriers on which a PHY preamble of the PPDU is modulated.
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公开(公告)号：US20250007541A1
公开(公告)日：2025-01-02
申请号：US18884974
申请日：2024-09-13
Applicant: QUALCOMM Incorporated
Inventor： Jialing Li CHEN , Lin YANG , Bin TIAN
IPC: H04B1/04
Abstract: This disclosure provides wireless communication methods, components, devices and systems for applying spectral masks and spectral flatness parameters in conjunction with transmission of millimeter wave (mmWave) signals in wireless communication networks. In some examples, in conjunction with transmission of an mmWave signal, a wireless communication device can apply a derivative spectral mask featuring transitional offset ranges that correspond to transitional frequency offset ranges of a spectral mask for a nominal carrier signal, scaled according to a ratio between a bandwidth of the mmWave signal and a bandwidth of the nominal carrier signal. In some examples, the derivative spectral mask can feature an in-band frequency offset range that is wider than a scaled width of an in-band frequency offset range of the spectral mask for the nominal carrier signal.
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公开(公告)号：US20240259243A1
公开(公告)日：2024-08-01
申请号：US18532755
申请日：2023-12-07
Applicant: QUALCOMM Incorporated
Inventor： Lin YANG , Bin TIAN , Youhan KIM
CPC classification number: H04L27/2603 , H04L1/0068 , H04L5/0048 , H04L5/0094 , H04L27/2613
Abstract: This disclosure provides methods, devices and systems that support communicating using orthogonal frequency division multiple access (OFDMA) according to a tone plan that supports 20 MHz subchannel puncturing within a wireless channel. In some aspects, a non-legacy tone plan may define a set of tones for a resource unit (RU) such that the RU does not overlap a 20 MHz subchannel boundary of the wireless channel. The locations of the set of tones in the non-legacy tone plan may be shifted relative to corresponding tones associated with a corresponding RU according to a legacy tone plan. One or more of the disclosed tone plans may enable puncturing of subchannels while making use of some RUs that would otherwise partially overlap a punctured subchannel in the legacy tone plan.
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公开(公告)号：US20240259059A1
公开(公告)日：2024-08-01
申请号：US18629582
申请日：2024-04-08
Applicant: QUALCOMM Incorporated
Inventor： Abhishek Pramod PATIL , George CHERIAN , Yanjun SUN , Lin YANG , Gaurang NAIK , Abdel Karim AJAMI , Alfred ASTERJADHI , Sai Yiu Duncan HO
CPC classification number: H04B7/0617 , H04B7/0695 , H04W24/02 , H04W28/0278
Abstract: Methods, systems, and devices for wireless communications are described. A first wireless device (e.g., station (STA), access point (AP)) may transmit to a second wireless device during a service period, an initiating frame using a transmit beam that is based on a first beam training procedure performed between the devices prior to the service period. The first wireless device may perform a second beam training procedure during the service period based on an absence of a response frame from the second wireless device, based on an indication within the response frame received from the second wireless device, or based on identification of a change in a wireless channel relative to a previous beam training interval or previous service period. The first wireless device may then communicate one or more messages with the second wireless device using one or more beams that are based on the second beam training procedure.
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Patent Agency Ranking
公开(公告)号：US20240250788A1
公开(公告)日：2024-07-25
申请号：US18626144
申请日：2024-04-03
Applicant: QUALCOMM Incorporated
Inventor： Lin YANG , Bin TIAN , Youhan KIM , Qifan CHEN
CPC classification number: H04L5/0048 , H04W52/18
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：US20240187157A1
公开(公告)日：2024-06-06
申请号：US18448033
申请日：2023-08-10
Applicant: QUALCOMM Incorporated
Inventor： Lin YANG , Bin TIAN , Sameer VERMANI
IPC: H04L5/00 , H04L1/00 , H04L27/26 , H04W72/044 , H04W72/0453 , H04W80/02 , H04W80/08
CPC classification number: H04L5/0044 , H04L1/0013 , H04L5/0007 , H04L27/2602 , H04L27/2605 , H04W72/0453 , H04W72/0466 , H04W80/02 , H04W80/08 , H04L27/2603
Abstract: This disclosure provides methods, devices and systems for data parsing for resource unit (RU) aggregation. A wireless communication device (such as an access point (AP) or a station (STA)) may allocate a set of RUs for a receiving device in a basic service set (BSS). The set of RUs may be associated with multiple bandwidth segments of a bandwidth allocation and may be non-contiguous or contiguous. The wireless communication device may determine a data parsing and encoding scheme for a set of information bits. The data parsing may be implemented at a medium access control (MAC) layer or physical (PHY) layer and the encoding may correspond to a joint encoding or a separate encoding for each RU of the allocation. The wireless communication device may then distribute the coded bits to the set of RUs for transmission.
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公开(公告)号：US20230412349A1
公开(公告)日：2023-12-21
申请号：US18302678
申请日：2023-04-18
Applicant: QUALCOMM Incorporated
IPC: H04L5/00 , H04W72/0446 , H04W80/02
CPC classification number: H04L5/0094 , H04L5/0039 , H04W72/0446 , H04W80/02
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：US20210399933A1
公开(公告)日：2021-12-23
申请号：US17353673
申请日：2021-06-21
Applicant: QUALCOMM Incorporated
Inventor： Kanke WU , Jialing Li CHEN , Lin YANG , Bin TIAN
IPC: H04L27/26
Abstract: Various aspects relate generally to the generation and wireless transmission of a long training field (LTF) and a data field within a 320 MHz or 240 MHz bandwidth channel. The LTF includes an LTF sequence based on a concatenation of a plurality of LTF subsequences, each LTF subsequence being associated with a channel bandwidth less than the total bandwidth of the channel, each of the plurality of LTF subsequences being selectively phase-rotated to reduce a peak-to-average power ratio. Each of the plurality of LTF subsequences may be associated with an LTF designed for an 80 MHz bandwidth channel. The LTF and the data field may then be transmitted in a wireless packet to at least one second wireless communication device via the 320 MHz or 240 MHz bandwidth channel.
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公开(公告)号：US20210211143A1
公开(公告)日：2021-07-08
申请号：US17130162
申请日：2020-12-22
Applicant: QUALCOMM Incorporated
Inventor： Thomas Joseph RICHARDSON , Dung Ngoc DOAN , Didier Johannes Richard VAN NEE , Lin YANG , Bin TIAN
Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for encoding data for wireless transmissions. In one aspect, a wireless device may encode a number (M) of systematic bits for transmission to a receiving device. The systematic bits may be encoded using a low-density parity-check (LDPC) code to produce an LDPC codeword. The LDPC codeword may include a number (N) of codeword bits, including the M systematic bits and one or more parity bits. The wireless device may further puncture a number (K) of the codeword bits to produce a punctured codeword having a code rate M/(N−K)>5/6. The wireless device may transmit the N−K remaining codeword bits, over a wireless channel, to a receiving device.
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