公开(公告)号：WO2013082604A1

公开(公告)日：2013-06-06

申请号：PCT/US2012/067617

申请日：2012-12-03

Applicant: QUALCOMM INCORPORATED

Inventor： YANG, Lin ,  VAN NEE, Didier Johannes Richard ,  SAMPATH, Hemanth ,  VERMANI, Sameer

IPC: H04L1/00 ,  H04L27/26

CPC classification number: H04L27/2608 ,  H04L1/0071 ,  H04L5/0044 ,  H04L27/2601 ,  H04L27/2602

Abstract: An apparatus includes an interleaver configured to interleave encoded data and to output a series of interleaved bits to be transmitted via a 1 MHz orthogonal frequency-division multiplexing (OFDM) transmission. The apparatus also includes a modulator configured to modulate the interleaved bits and a transform module configured to transform the modulated bits. A transmit module of the apparatus is configured to transmit the transformed bits included in one or more spatial streams of the 1 MHz OFDM transmission.

Abstract translation: 一种装置包括交织器，被配置为交织编码数据并输出要通过1MHz正交频分复用（OFDM）传输发送的一系列交织比特。 该装置还包括配置成调制交错比特的调制器和被配置为变换调制比特的变换模块。 该装置的发送模块被配置为发送包括在1MHz OFDM传输的一个或多个空间流中的变换的比特。

公开(公告)号：WO2012031139A1

公开(公告)日：2012-03-08

申请号：PCT/US2011/050230

申请日：2011-09-01

Applicant: QUALCOMM INCORPORATED ,  YANG, Lin ,  VAN NEE, Didier Johannes Richard ,  SAMPATH, Hemanth ,  JONES, Vincent K., IV ,  VAN ZELST, Albert ,  VERMANI, Sameer

Inventor： YANG, Lin ,  VAN NEE, Didier Johannes Richard ,  SAMPATH, Hemanth ,  JONES, Vincent K., IV ,  VAN ZELST, Albert ,  VERMANI, Sameer

IPC: H04L1/00 ,  H04L1/06 ,  H04B7/04 ,  H03M13/27

CPC classification number: H04L1/06 ,  H03M13/09 ,  H03M13/1102 ,  H03M13/23 ,  H03M13/29 ,  H03M13/2957 ,  H03M13/6362 ,  H03M13/6527 ,  H04L1/0033 ,  H04L1/0041 ,  H04L1/0045 ,  H04L1/0071

Abstract: Certain aspects of the present disclosure provide techniques and apparatus for frequency interleaving for use with 80 MHz transmissions, such as those in the IEEE 802.11ac amendment to the IEEE 802.11 standard. According to certain aspects, frequency interleaving spatial streams for transmissions on channels having widths of about 80 MHz may comprise using an interleaving depth of 26. The number of frequency rotations may be 58 (or 29) for up to four (or up to eight) spatial streams. According to certain aspects, frequency interleaving up to eight (or up to four) spatial streams for transmission on channels having widths of about 80 MHz may comprise performing frequency rotation for each of the spatial streams based on a frequency rotation index = [0 4 2 6 1 5 3 7] (or = [0 2 1 3]).

Abstract translation: 本公开的某些方面提供了用于频率交织以用于80MHz传输的技术和装置，例如在IEEE 802.11标准的IEEE 802.11ac修改中的传输。 根据某些方面，用于在具有大约80MHz的宽度的信道上的传输的频率交织空间流可以包括使用交织深度26.对于多达四个（或多至八个）频率旋转的数目可以是58（或29） 空间流。 根据某些方面，用于在具有大约80MHz的宽度的信道上传输多达八个（或多至四个）空间流的频率交织可以包括基于频率旋转指数= [0,4 2]来为每个空间流执行频率旋转 6 1 5 3 7]（或= [0 2 1 3]）。

公开(公告)号：WO2011143634A1

公开(公告)日：2011-11-17

申请号：PCT/US2011/036546

申请日：2011-05-13

Applicant: QUALCOMM INCORPORATED ,  YANG, Lin ,  SARKAR, Sandip ,  MALLADI, Durga Prasad ,  DOAN, Dung N.

Inventor： YANG, Lin ,  SARKAR, Sandip ,  MALLADI, Durga Prasad ,  DOAN, Dung N.

IPC: H04L5/00

CPC classification number: H04L5/003

Abstract: Systems and methodologies are described that facilitate utilizing dedicated reference signal in connection with downlink transmissions. A dedicated reference signal can comprise a set of dedicated reference symbols, which are inserted into a resource block in accordance with a specification provided by a dedicated reference signal structure. The dedicated reference signal structure can vary according to a rank utilized in the downlink transmission.

Abstract translation: 描述了有助于利用与下行链路传输相关联的专用参考信号的系统和方法。 专用参考信号可以包括一组专用参考符号，它们根据由专用参考信号结构提供的规范插入到资源块中。 专用参考信号结构可以根据下行链路传输中使用的等级而变化。

公开(公告)号：WO2011127193A1

公开(公告)日：2011-10-13

申请号：PCT/US2011/031449

申请日：2011-04-06

Applicant: QUALCOMM INCORPORATED ,  YANG, Lin ,  VAN NEE, Didier, Johannes, Richard ,  SAMPATH, Hemanth

Inventor： YANG, Lin ,  VAN NEE, Didier, Johannes, Richard ,  SAMPATH, Hemanth

IPC: H04L27/26

CPC classification number: H04W28/065 ,  H04L27/2613 ,  H04L27/2618 ,  H04L27/262 ,  H04L27/2621 ,  H04W52/325

Abstract: Certain aspects of the present disclosure relate to techniques for constructing a training sequence as a part of transmission preamble in an effort to minimize (or at least reduce) a peak-to-average power ratio (PAPR) at a transmitting node.

Abstract translation: 本公开的某些方面涉及用于将训练序列构建为传输前导码的一部分的技术，以努力最小化（或至少降低）发射节点处的峰值平均功率比（PAPR）。

公开(公告)号：WO2023059403A1

公开(公告)日：2023-04-13

申请号：PCT/US2022/041076

申请日：2022-08-22

Applicant: QUALCOMM INCORPORATED

Inventor： YANG, Lin ,  TIAN, Bin ,  CHEN, Qifan ,  KIM, Youhan

IPC: H04L27/26 ,  H04L5/00 ,  H04L27/2613 ,  H04L27/262 ,  H04L27/2621 ,  H04L5/0041 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/0069 ,  H04W52/286

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 LTF designs that support distributed transmissions. In some aspects, a transmitting device may obtain a sequence of values representing an LTF of a PPDU and may map the sequence of values to a number (N) of noncontiguous subcarrier indices of a plurality of subcarrier indices spanning a wireless channel according to a distributed tone plan. In some implementations, the transmitting device may modulate the sequence of values on N tones, representing a logical RU, and map the N tones to the N noncontiguous subcarrier indices, respectively. In some other implementations, the sequence of values may be obtained based on relative locations of the N noncontiguous subcarrier indices in the wireless channel.

公开(公告)号：WO2022245463A1

公开(公告)日：2022-11-24

申请号：PCT/US2022/025613

申请日：2022-04-20

Applicant: QUALCOMM INCORPORATED

Inventor： YANG, Lin ,  TIAN, Bin ,  KIM, Youhan

IPC: H04L5/00 ,  H04L27/26 ,  H04W52/34

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 physical layer (PHY) convergence protocol (PLCP) protocol data unit (PPDU) designs that support distributed transmission. In some implementations, a PPDU may be generated based on one or more legacy tone plans. In such implementations, a portion of the PPDU may be modulated on a number (M) of tones representing a logical RU, and the M tones may be further mapped to M noncontiguous subcarrier indices in accordance with a distributed tone plan. In some other implementations, a PPDU may be generated based on a distributed tone plan. In such implementations, a portion of the PPDU may be modulated on a number (M) of tones coinciding with M noncontiguous subcarrier indices in accordance with the distributed tone plan.

公开(公告)号：WO2022231698A1

公开(公告)日：2022-11-03

申请号：PCT/US2022/019092

申请日：2022-03-07

Applicant: QUALCOMM INCORPORATED

Inventor： YANG, Lin ,  TIAN, Bin

IPC: H04L5/00

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：WO2021183608A1

公开(公告)日：2021-09-16

申请号：PCT/US2021/021645

申请日：2021-03-10

Applicant: QUALCOMM INCORPORATED

Inventor： YANG, Lin ,  CHEN, Jialing Li ,  VERMANI, Sameer ,  TIAN, Bin ,  KIM, Youhan ,  JONES IV, Vincent Knowles ,  YUCEK, Tevfik

IPC: H04L5/00 ,  H04W84/12

Abstract: This disclosure provides systems, methods and apparatus, including computer programs encoded on computer storage media, for physical layer (PHY) packet design for power spectral density (PSD) limits. In some implementations, a wireless communication device generates a plurality of PHY convergence protocol (PLCP) protocol data unit (PPDU) duplicates configured for transmission over a selected bandwidth, and transmits each PPDU duplicate of the plurality of PPDU duplicates on a corresponding frequency subband of a plurality of different frequency subbands. In some other implementations, the wireless communication device generates a PPDU for transmission over a set of duplicated resource units (RUs) allocated to the wireless communication device, and transmits the PPDU over the allocated set of duplicated RUs.

公开(公告)号：WO2021113153A1

公开(公告)日：2021-06-10

申请号：PCT/US2020/062519

申请日：2020-11-27

Applicant: QUALCOMM INCORPORATED

Inventor： YANG, Lin ,  TIAN, Bin ,  VERMANI, Sameer ,  SHELLHAMMER, Stephen Jay ,  DOAN, Dung Ngoc ,  CHEN, Jialing Li

IPC: H04L1/00 ,  H04L5/00

Abstract: This disclosure provides systems, methods, and apparatus for link adaptation in a wireless local area network (WLAN). A link adaptation test packet from a first WLAN device to a second WLAN device may be formatted as a multiple-input-multiple-output (MIMO) transmission and may include one or more test portions for link quality estimation of the MIMO transmission. A link quality estimation portion of the test packet may permit measurement of link quality for various spatial streams of the MIMO transmission. The link adaptation test packet may enable a fast rate adaptation of a communication link based on the impact of interference to the various spatial streams. The second WLAN device may provide feedback information regarding the one or more test portions. The feedback information may be used to determine a transmission rate for a subsequent transmission from the first WLAN device to the second WLAN device based on wireless channel conditions.

公开(公告)号：WO2021113141A1

公开(公告)日：2021-06-10

申请号：PCT/US2020/062209

申请日：2020-11-25

Applicant: QUALCOMM INCORPORATED

Inventor： YANG, Lin ,  TIAN, Bin ,  DOAN, Dung Ngoc ,  VERMANI, Sameer ,  SHELLHAMMER, Stephen Jay ,  CHEN, Jialing Li

IPC: H04L1/00

Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for link adaptation in a wireless local area network (WLAN). A link adaptation test packet from a first WLAN device to a second WLAN may include a plurality of link adaptation test portions that are generated using a corresponding plurality of transmission rate options. For example, the plurality of link adaptation test portions may be modulated using different modulation and coding scheme (MCS) options. Thus, a single test packet may be used to evaluate different transmission rate options. The second WLAN device may provide feedback information regarding the link adaptation test portions. The feedback information may be used to determine a transmission rate for a subsequent transmission from the first WLAN device to the second WLAN device based on wireless channel conditions.