公开(公告)号：US20140328249A1

公开(公告)日：2014-11-06

申请号：US14253731

申请日：2014-04-15

Applicant: QUALCOMM Incorporated

Inventor： Sameer Vermani ,  Bin Tian ,  Rahul Tandra

IPC: H04L29/08 ,  H04W28/06

CPC classification number: H04L69/323 ,  H04L5/0007 ,  H04L27/2613 ,  H04W28/065

Abstract: Systems and methods for aggregation of multiple physical protocol data units are disclosed. In one aspect, a method of transmitting a physical layer packet to a plurality of wireless devices is disclosed. The method includes generating a physical layer packet, the packet including a plurality of payloads, wherein at least one of the payloads comprises first data addressed to a first device and second data addressed to a second device, and wherein each payload is preceded by at least a signal field in the physical layer packet, and transmitting the physical layer packet.

Abstract translation: 公开了用于多个物理协议数据单元的聚合的系统和方法。 一方面，公开了将物理层分组发送到多个无线装置的方法。 该方法包括生成物理层分组，分组包括多个有效载荷，其中有效载荷中的至少一个包括寻址到第一设备的第一数据和寻址到第二设备的第二数据，并且其中每个有效载荷至少在前面至少 物理层分组中的信号字段，并发送物理层分组。

公开(公告)号：US20140328195A1

公开(公告)日：2014-11-06

申请号：US14266754

申请日：2014-04-30

Applicant: QUALCOMM Incorporated

Inventor： Hemanth Sampath ,  Bin Tian ,  Rahul Tandra ,  Gwendolyn Denise Barriac ,  Yan Zhou ,  Sameer Vermani ,  Simone Merlin

IPC: H04W72/04

CPC classification number: H04W72/042 ,  H04W16/10 ,  H04W16/14 ,  H04W72/04 ,  H04W72/0453 ,  H04W72/082 ,  H04W74/0816 ,  H04W74/085 ,  H04W84/12 ,  H04W88/08

Abstract: Systems, methods, and devices for transmitting data are described herein. In some aspects, a method comprises generating a first packet. The first packet may comprise a physical layer and a media access control (MAC) layer. The MAC layer may allocate a first station to a primary frequency channel and a second station to a secondary frequency channel. The method further comprises transmitting the first packet to the first station and the second station. The method further comprises transmitting a second packet to the first station using the primary frequency channel. The method further comprises transmitting a third packet to the second station using the secondary frequency channel.

Abstract translation: 本文描述了用于传输数据的系统，方法和设备。 在一些方面，一种方法包括生成第一分组。 第一分组可以包括物理层和媒体访问控制（MAC）层。 MAC层可以将第一站分配给主频道，而将第二站分配给次频信道。 该方法还包括将第一分组发送到第一站和第二站。 该方法还包括使用主频道向第一站发送第二分组。 该方法还包括使用次频道向第二站发送第三分组。

公开(公告)号：US20140328191A1

公开(公告)日：2014-11-06

申请号：US14265112

申请日：2014-04-29

Applicant: QUALCOMM Incorporated

Inventor： Gwendolyn Denise Barriac ,  Simone Merlin ,  Sameer Vermani ,  Rahul Tandra ,  Yan Zhou ,  Bin Tian ,  Hemanth Sampath

IPC: H04W72/04 ,  H04W52/24

CPC classification number: H04W72/048 ,  H04W52/241 ,  H04W74/0808

Abstract: Systems and method for concurrent communication using high efficiency wifi are disclosed. One aspect is a method of transmitting a wireless message on a medium utilizing carrier sense multiple access (CSMA). The method includes receiving, via a first wireless device, at least a portion of a first wireless message from a second wireless device, the message including an indication of a basic service set of the second wireless device. The method also includes determining whether to defer transmission of a second wireless message based, at least in part, on the basic service set of the second wireless device.

Abstract translation: 公开了使用高效率WiFi并发通信的系统和方法。 一个方面是使用载波侦听多路访问（CSMA）在介质上传送无线消息的方法。 该方法包括经由第一无线设备从第二无线设备接收第一无线消息的至少一部分，该消息包括第二无线设备的基本服务集的指示。 该方法还包括至少部分地基于第二无线设备的基本服务集来确定是否延迟第二无线消息的传输。

公开(公告)号：US20140269768A1

公开(公告)日：2014-09-18

申请号：US13826014

申请日：2013-03-14

Applicant: QUALCOMM INCORPORATED

Inventor： Sameer Vermani ,  Bin Tian ,  Albert va Zelst

IPC: H04B7/06 ,  H04L29/06

CPC classification number: H04L69/22 ,  H04B7/0669 ,  H04B7/0671 ,  H04B7/068 ,  H04B7/12

Abstract: Certain aspects of the present disclosure provide methods and apparatus for obtaining second-order downlink spatial diversity within a wireless communication system in accordance with IEEE 802.11ah, for example. One example method generally includes generating a frame comprising a preamble having at least one field, replicating at least one bit of the at least one field to form a replica of the at least one bit, transmitting the at least one bit via a first antenna, and transmitting the replica of the at least one bit via a second antenna. Another example method generally includes generating at least two space-time streams; transmitting, via a first pair of antennas, the at least two space-time streams in a first frequency band; and transmitting, via a second pair of antennas, the at least two space-time streams in a second frequency band.

Abstract translation: 本公开的某些方面提供了例如根据IEEE 802.11ah在无线通信系统内获得二阶下行链路空间分集的方法和装置。 一个示例性方法通常包括生成包括具有至少一个场的前同步码的帧，复制至少一个场的至少一个比特以形成至少一个比特的副本，经由第一天线发射该至少一个比特， 以及经由第二天线发送所述至少一个比特的副本。 另一示例性方法通常包括生成至少两个时空流; 经由第一对天线在第一频带中发送所述至少两个空时流; 以及经由第二对天线在所述第二频带中发送所述至少两个时空流。

公开(公告)号：US20140153507A1

公开(公告)日：2014-06-05

申请号：US14091052

申请日：2013-11-26

Applicant: Qualcomm Incorporated

Inventor： Lin Yang ,  Bin Tian ,  Sameer Vermani

IPC: H04L27/26

CPC classification number: H04L27/2621 ,  H04L27/2602 ,  H04L27/2613

Abstract: Methods, devices, and computer program products for optimally phase rotating duplicate frames in wireless LAN transmissions are disclosed. In one aspect, phase rotation sequences may be chosen in order to minimize a peak-to-average power ratio (PAPR) of a frame or data unit, or of a portion of a frame or data unit, where the frame contains a plurality of identical frequency segments, such as a duplicate frame. The method involves selecting a frame bandwidth, and then selecting a phase rotation sequence based upon the frame bandwidth. The method further includes generating a frame including a number of identical 1 MHz frequency segments, and rotating some of those segments relative to other segments, based on the selected phase rotation sequence. The method further includes transmitting the frame.

Abstract translation: 公开了用于无线LAN传输中的最佳相位旋转重复帧的方法，设备和计算机程序产品。 在一个方面，可以选择相位旋转序列，以便最小化帧或数据单元或帧或数据单元的一部分的峰均功率比（PAPR），其中帧包含多个 相同的频段，如重复帧。 该方法包括选择帧带宽，然后基于帧带宽选择相位旋转序列。 该方法还包括基于所选择的相位旋转序列生成包括多个相同的1MHz频率段的帧，以及相对于其他段旋转那些段中的一些段。 该方法还包括发送帧。

公开(公告)号：US12218884B2

公开(公告)日：2025-02-04

申请号：US17503215

申请日：2021-10-15

Applicant: QUALCOMM Incorporated

Inventor： Lin Yang ,  Bin Tian ,  Youhan Kim ,  Qifan Chen

IPC: H04L5/00 ,  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 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.

公开(公告)号：US12137015B2

公开(公告)日：2024-11-05

申请号：US18182288

申请日：2023-03-10

Applicant: QUALCOMM Incorporated

Inventor： Stephen Jay Shellhammer ,  Bin Tian ,  Sameer Vermani ,  Jialing Li Chen ,  Youhan Kim

IPC: H04W84/12 ,  H04L27/26

Abstract: This disclosure provides methods, devices and systems for wireless communication, and particularly, for generating or receiving a multi-generation physical layer protocol data unit (PPDU). The multi-generation PPDU may concurrently include a first generation-specific preamble based on a first generation of a wireless communication specification (such as that defined by the Institute of Electrical and Electronics Engineers (IEEE) 802.11 family of standards) and a second generation-specific preamble based on a second generation of the wireless communication specification in a same transmission. The generation-specific preambles may be generated based on bandwidth portions of a wireless channel that each generation-specific preamble will occupy in the multi-generation PPDU. One or more of the generation-specific preambles may be modified based on an aggregate bandwidth of the multi-generation PPDU. This disclosure includes several options for modifying one or more generation-specific preambles or data fields to accommodate their use in a multi-generation PPDU.

公开(公告)号：US12132682B2

公开(公告)日：2024-10-29

申请号：US18541388

申请日：2023-12-15

Applicant: QUALCOMM Incorporated

Inventor： Stephen Jay Shellhammer ,  Bin Tian ,  Alireza Raissinia ,  Simone Merlin

IPC: H04B7/06 ,  H04B17/318 ,  H04L5/00 ,  H04L25/02

CPC classification number: H04L5/0053 ,  H04B17/318

Abstract: Methods, systems, and devices for wireless communications are described. A station (STA) may receive a null data packet (NDP) on a plurality of subcarriers, and the STA may generate a channel state information (CSI) matrix for each subcarrier of the plurality of subcarriers. After generating a CSI matrix for a subcarrier, such as at least one subcarrier, the STA may scale each value in the CSI matrix using a power-of-two value to minimize complexity. Specifically, instead of scaling each value in the CSI matrix to a value between zero and one using divisions (for example, which may be computationally expensive), the STA may use shifting to scale each value in the CSI matrix. The STA may then quantize the scaled values in the CSI matrix for reporting, and the STA may transmit the quantized, scaled values in the CSI matrix in a CSI report.

公开(公告)号：US12120025B2

公开(公告)日：2024-10-15

申请号：US17323563

申请日：2021-05-18

Applicant: QUALCOMM Incorporated

Inventor： Jialing Li Chen ,  Sameer Vermani ,  Bin Tian

IPC: H04L45/74

CPC classification number: H04L45/74

Abstract: This disclosure provides methods, devices and systems for generating packet preambles. Some implementations more specifically relate to preamble designs that support gains in data throughput achievable in accordance with the IEEE 802.11 be amendment, and future generations, of the IEEE 802.11 standard. Among other examples, the preamble designs of the present implementations may allow for more reliable packet detection, more accurate channel estimation, and more robust decoding of signal field (SIG) symbols. Additionally, or alternatively, the preamble designs of the present disclosure may be implemented with different lengths, modulation schemes, or transmit power compared to preamble designs that conform to existing versions of the IEEE 802.11 standard.

公开(公告)号：US12101148B2

公开(公告)日：2024-09-24

申请号：US17738892

申请日：2022-05-06

Applicant: QUALCOMM Incorporated

Inventor： Lin Yang ,  Bin Tian ,  Alfred Asterjadhi ,  Youhan Kim

IPC: H04B7/06 ,  H04W84/12

CPC classification number: H04B7/0617 ,  H04B7/0619 ,  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 BSS discovery and association techniques that support wireless communications on carrier frequencies above 7 GHz. In some aspects, an access point (AP) may communicate using beamforming on a wireless communication link operating at a carrier frequency above 7 GHz (the “directional link”) while offloading the BSS discovery and association procedures needed to support such communications onto a wireless communication link operating at a carrier frequency below 7 GHz (the “anchor link”). In some implementations, the AP may perform a beamforming training operation with a STA over the directional link upon associating with the STA over the anchor link. In such implementations, the AP may communicate with the STA over the directional link using a beam derived from the beamforming training operation.