公开(公告)号：US20220385521A1

公开(公告)日：2022-12-01

申请号：US17330238

申请日：2021-05-25

Applicant: QUALCOMM Incorporated

Inventor： Jialing Li CHEN ,  Kanke WU ,  Bin TIAN

IPC: H04L27/28 ,  H04L1/00 ,  H04L27/20

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 tone mapping techniques and packet designs that support duplicate (or “DUP mode”) transmissions to multiple users. In some implementations, an access point (AP) may transmit a PPDU that includes first user data and second user data, where at least the first user data is transmitted in a DUP mode. As such, the first user data may be mapped to a number (N) of tones spanning a first RU in accordance with a dual carrier modulation (DCM) scheme, and a duplicate copy of the first user data may be mapped to N tones spanning a second RU in accordance with the DCM scheme. In some implementations, the second user data also may be transmitted in a DUP mode.

公开(公告)号：US20240063876A1

公开(公告)日：2024-02-22

申请号：US17820006

申请日：2022-08-16

Applicant: QUALCOMM Incorporated

Inventor： Kanke WU ,  Bin TIAN ,  Tevfik YUCEK ,  Lin YANG

IPC: H04B7/06 ,  H04L5/00

CPC classification number: H04B7/0691 ,  H04L5/0098

Abstract: This disclosure provides methods, devices and systems for improving wireless communications in power spectral density (PSD)-limited frequency bands. A wireless communication device, having a number (NTX) of transmit antennas, parses a physical layer (PHY) protocol data unit (PPDU) into a number (NSS) of spatial streams and modulates the NSS spatial streams on a number (M) of subcarriers. In some implementations, the wireless communication device may transmit the PPDU using a number (N) of the transmit antennas, where NSS≤N

公开(公告)号：US20240405959A1

公开(公告)日：2024-12-05

申请号：US18598358

申请日：2024-03-07

Applicant: QUALCOMM Incorporated

Inventor： Kanke WU ,  Jialing Li CHEN ,  Bin TIAN

IPC: H04L5/00 ,  H04W72/0453

Abstract: Duplicated physical layer convergence protocol (PLCP) protocol data unit (PPDU) transmission is described for a wireless device with reduced peak-to-average power ratios (PAPR). One example includes obtaining a first sub-PPDU from ta PPDU that includes a data field with data content. A second sub-PPDU may also be obtained by duplicating the PPDU including the data content of the PPDU. At least one of a phase rotation, a phase offset, or a phase ramp is applied to at least a portion of a second set of sub-carrier of a wideband channel. The first sub-PPDU is transmitted on a first set of sub-carriers of the wideband channel and the second sub-PPDU is transmitted on the second set of sub-carriers of the wideband channel.

公开(公告)号：US20220393790A1

公开(公告)日：2022-12-08

申请号：US17340578

申请日：2021-06-07

Applicant: QUALCOMM Incorporated

Inventor： Jialing Li CHEN ,  Kanke WU ,  Bin TIAN ,  Youhan KIM

IPC: H04L1/00 ,  H04L27/26

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 tone mapping techniques and physical layer convergence protocol (PLCP) protocol data unit (PPDU) designs that support duplicate (or “DUP mode”) transmissions with channel puncturing. In some implementations, a wireless communication device may transmit a PPDU carrying user data over a wireless channel excluding one or more punctured subchannels, where the user data is transmitted in a DUP mode. As such, the user data may be mapped to a number (N) of tones spanning a first portion of the wireless channel and a duplicate copy of the user data may be mapped to N tones spanning a second portion of the wireless channel.

公开(公告)号：US20240372597A1

公开(公告)日：2024-11-07

申请号：US18773122

申请日：2024-07-15

Applicant: QUALCOMM Incorporated

Inventor： Kanke WU ,  Bin TIAN ,  Tevfik YUCEK ,  Lin YANG

IPC: H04B7/06 ,  H04L5/00

Abstract: This disclosure provides methods, devices and systems for improving wireless communications in power spectral density (PSD)-limited frequency bands. A wireless communication device, having a number (NTX) of transmit antennas, parses a physical layer (PHY) protocol data unit (PPDU) into a number (NSS) of spatial streams and modulates the NSS spatial streams on a number (M) of subcarriers. In some implementations, the wireless communication device may transmit the PPDU using a number (N) of the transmit antennas, where NSS≤N

公开(公告)号：US20240072932A1

公开(公告)日：2024-02-29

申请号：US17821695

申请日：2022-08-23

Applicant: QUALCOMM Incorporated

Inventor： Kanke WU ,  Bin TIAN

IPC: H04L1/00 ,  H04L27/36

CPC classification number: H04L1/0061 ,  H04L27/36

Abstract: This disclosure provides methods, devices, and systems for forward error correction encoding and modulation with reliability differentiation. In some examples, a transmitting wireless communication device may use a concatenated encoding technique to generate a set of encoded bits that conveys both information bits of a first priority and information bits of a second priority lower than the first priority. In other examples, the transmitting device may use a parallel encoding technique to generate a first set of encoded bits that conveys information bits of the first priority and a second set of encoded bits that conveys information bits of the second priority. According to aspects of the disclosure, the transmitting device can map encoded bits corresponding to information bits of the first priority to relatively higher reliability bit positions of a modulation constellation.

公开(公告)号：US20240146355A1

公开(公告)日：2024-05-02

申请号：US18362127

申请日：2023-07-31

Applicant: QUALCOMM Incorporated

Inventor： Pooria PAKROOH ,  Kanke WU ,  Stephen Jay SHELLHAMMER ,  Bin TIAN

IPC: H04B1/7163 ,  H03M13/25

CPC classification number: H04B1/71635 ,  H03M13/255

Abstract: In some implementations, a transmitting UWB device may determine a number of information bits of a payload to communicate via UWB. The transmitting UWB device may select, based on the number of information bits, a codeword length from a selection of available codeword lengths with which to encode the payload using a low-density parity-check (LDPC) encoding scheme, wherein the selection of available codeword lengths include a first codeword length, a second codeword length, and a third codeword length, wherein the third codeword length is longer than the second codeword length, which is longer than the first codeword length. The transmitting UWB device may transmit the payload using one or more codewords having the selected codeword length.

公开(公告)号：US20230291631A1

公开(公告)日：2023-09-14

申请号：US18173612

申请日：2023-02-23

Applicant: QUALCOMM Incorporated

Inventor： Jialing Li CHEN ,  Kanke WU ,  Bin TIAN

IPC: H04L27/28 ,  H04L1/00 ,  H04L27/20

CPC classification number: H04L27/28 ,  H04L1/0003 ,  H04L27/2007

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 tone mapping techniques and packet designs that support duplicate (or “DUP mode”) transmissions to multiple users. In some implementations, an access point (AP) may transmit a PPDU that includes first user data and second user data, where at least the first user data is transmitted in a DUP mode. As such, the first user data may be mapped to a number (N) of tones spanning a first RU in accordance with a dual carrier modulation (DCM) scheme, and a duplicate copy of the first user data may be mapped to N tones spanning a second RU in accordance with the DCM scheme. In some implementations, the second user data also may be transmitted in a DUP mode.

公开(公告)号：US20220029772A1

公开(公告)日：2022-01-27

申请号：US17382263

申请日：2021-07-21

Applicant: QUALCOMM Incorporated

Inventor： Kanke WU ,  Jialing Li CHEN ,  Bin TIAN

IPC: H04L5/00 ,  H04W72/04

Abstract: Duplicated physical layer convergence protocol (PLCP) protocol data unit (PPDU) transmission is described for a wireless device with reduced peak-to-average power ratios (PAPR). One example includes obtaining a first sub-PPDU from to PPDU that includes a data field with data content. A second sub-PPDU may also be obtained by duplicating the PPDU including the data content of the PPDU. At least one of a phase rotation, a phase offset, or a phase ramp is applied to at least a portion of a second set of sub-carrier of a wideband channel. The first sub-PPDU is transmitted on a first set of sub-carriers of the wideband channel and the second sub-PPDU is transmitted on the second set of sub-carriers of the wideband channel.

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.