公开(公告)号：US20130242963A1

公开(公告)日：2013-09-19

申请号：US13775796

申请日：2013-02-25

Applicant: QUALCOMM INCORPORATED

Inventor： Didier Johannes Richard Van Nee ,  Lin Yang ,  Hemanth Sampath

IPC: H04L27/26

CPC classification number: H04L27/2615 ,  H04L27/2613 ,  H04L27/2621

Abstract: Certain aspects of the present disclosure relate to techniques for constructing a long training field (LTF) sequence in a preamble to reduce a peak-to-average power ratio (PAPR) at a transmitter.

Abstract translation: 本公开的某些方面涉及在前导码中构造长训练场（LTF）序列以降低发射机的峰均功率比（PAPR）的技术。

公开(公告)号：US20130179755A1

公开(公告)日：2013-07-11

申请号：US13735747

申请日：2013-01-07

Applicant: QUALCOMM Incorporated

Inventor： Lin Yang ,  Didier Johannes Richard Van Nee ,  Hemanth Sampath ,  Sameer Vermani

IPC: H03M13/13

CPC classification number: H03M13/13 ,  H04B7/0697 ,  H04L1/0033 ,  H04L1/0057 ,  H04L1/0071 ,  H04L27/2626 ,  H04L27/2627 ,  H04L27/2647

Abstract: This disclosure provides systems, methods, and apparatus, including non-transitory computer-readable medium for tone mapping an error correction code for 1 MHz OFDM transmission. In one aspect, a wireless communications apparatus is provided. The wireless communications apparatus includes a tone mapper configured to tone map at least error correction codeword to data tones of an orthogonal frequency-division multiplexing (OFDM) symbol based on an error correction code tone mapping distance selected from the group consisting of 2, 3, and 4. The OFDM symbol has twenty four data tones, at least one pilot tone, a DC tone, and at least one guard tone. The wireless communications apparatus further includes a transmit module configured to transmit the at least one tone mapped error correction codeword using about a 1 MHz OFDM transmission mode.

Abstract translation: 本公开提供了系统，方法和装置，包括用于1MHz OFDM传输的用于色调映射纠错码的非暂时计算机可读介质。 一方面，提供一种无线通信装置。 无线通信装置包括：色调映射器，被配置为基于从由2,3，...组成的组中选择的纠错码色调映射距离，至少将纠错码字调制到正交频分复用（OFDM）符号的数据音调， OFDM符号具有二十四个数据音调，至少一个导频音，直流音和至少一个保护音。 无线通信装置还包括被配置为使用大约1MHz的OFDM传输模式来发送所述至少一个色调映射的纠错码字的发送模块。

公开(公告)号：US12284067B2

公开(公告)日：2025-04-22

申请号：US17353673

申请日：2021-06-21

Applicant: QUALCOMM Incorporated

Inventor： Kanke Wu ,  Jialing Li Chen ,  Lin Yang ,  Bin Tian

IPC: H04W4/00 ,  H04L27/26 ,  H04W84/12

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.

公开(公告)号：US12278777B2

公开(公告)日：2025-04-15

申请号：US18531411

申请日：2023-12-06

Applicant: QUALCOMM Incorporated

Inventor： Lin Yang ,  Bin Tian

IPC: H04L5/00 ,  H04W72/0453 ,  H04W72/1263

Abstract: This disclosure provides methods, devices and systems for configuring tones for a distributed resource unit (RU) across a channel bandwidth to improve frequency diversity and available transmit power. A distributed RU may include a set of tones that may be allocated across a bandwidth that is greater than a bandwidth of the aggregate quantity of tones. The set of tones may include a set of data tones grouped into contiguous groups of one or more data tones and a set of non-contiguous pilot tones. The data tones may be mapped to useful tones over a center portion of a half-bandwidth of the channel. The pilot tones may be mapped near edge tones at edges of the channel bandwidth or near direct current tones at a center of the channel bandwidth. A system bandwidth may include one or more channel bandwidths associated with distributed RUs.

公开(公告)号：US20250023678A1

公开(公告)日：2025-01-16

申请号：US18899245

申请日：2024-09-27

Applicant: QUALCOMM Incorporated

Inventor： George Cherian ,  Alfred Asterjadhi ,  Abhishek Pramod Patil ,  Sameer Vermani ,  Bin Tian ,  Stephen Jay Shellhammer ,  Lochan Verma ,  Lin Yang ,  Jialing Li Chen

IPC: H04L5/00 ,  H04W16/14 ,  H04W72/044 ,  H04W72/27 ,  H04W74/0808 ,  H04W84/12 ,  H04W88/08

Abstract: Methods, systems, and devices for wireless communications are described. An access point (AP) may transmit, to a second AP and during a first portion of a transmission opportunity (TxOP), a request to participate in a multi-user (MU) transmission. The AP may receive, from the second AP and during the first portion of the TxOP, an indication of intent to participate in the MU transmission during the second portion of the TxOP, the indication of intent including a resource request of the second AP for participation in the MU transmission. The AP may transmit, during an initial period of the second portion of the TxOP, a trigger signal to the second AP indicating a set of one or more resources for the second AP during the MU transmission. The AP may participate, in conjunction with the second AP and during the second portion of the TxOP, in the MU transmission.

公开(公告)号：US12192036B2

公开(公告)日：2025-01-07

申请号：US18480666

申请日：2023-10-04

Applicant: QUALCOMM Incorporated

Inventor： Lin Yang ,  Bin Tian ,  Youhan Kim ,  Jialing Li Chen

IPC: H04L27/26 ,  H04W84/12

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.

公开(公告)号：US12177166B2

公开(公告)日：2024-12-24

申请号：US18302678

申请日：2023-04-18

Applicant: QUALCOMM Incorporated

Inventor： Lin Yang ,  Bin Tian

IPC: H04W56/00 ,  H04L5/00 ,  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.

公开(公告)号：US12096267B2

公开(公告)日：2024-09-17

申请号：US18304310

申请日：2023-04-20

Applicant: QUALCOMM Incorporated

Inventor： Jialing Li Chen ,  Sameer Vermani ,  Bin Tian ,  Lin Yang

IPC: H04W28/06 ,  H04W28/02

CPC classification number: H04W28/0231 ,  H04W28/06

Abstract: This disclosure provides methods, devices and systems for generating packet preambles. Some implementations more specifically relate to preamble designs for special cases such as, for example, full-bandwidth multi-user multiple-input multiple-output (MU-MIMO), single-user (SU) preamble puncturing, hybrid automatic repeat request (HARD), and multi-AP coordination. Multi-AP coordination may refer to coordinated beamforming (CoBF), joint transmission (JT), or coordinated orthogonal frequency division multiple access (C-OFDMA). Additionally, or alternatively, some implementations more specifically relate to preamble designs that accommodate signal fields of different cases.

公开(公告)号：US12052081B2

公开(公告)日：2024-07-30

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：US20240223308A1

公开(公告)日：2024-07-04

申请号：US18145844

申请日：2022-12-22

Applicant: QUALCOMM Incorporated

Inventor： Kanke Wu ,  Bin Tian ,  Lin Yang

IPC: H04L1/00 ,  H03M13/11

CPC classification number: H04L1/0063 ,  H03M13/1102 ,  H04L1/0057

Abstract: Methods, systems, and devices for wireless communications are described. A first wireless device, such as a wireless station (STA) or a wireless access point (AP), may perform a low-density parity check (LDPC) coding operation on input bits of a set of code blocks. Performing the LDPC coding operation on the input bits may produce a set of codewords including one or more codewords having a first codeword length and one or more codewords having a second, shorter codeword length. The first wireless device may arrange the set of codewords into a set of symbols such that a last symbol in time of the set of symbols includes the one or more codewords each having the second codeword length and no codewords having the first codeword length. The first wireless device may transmit, to a second wireless device, the plurality of symbols.