公开(公告)号：US20160029397A1

公开(公告)日：2016-01-28

申请号：US14805347

申请日：2015-07-21

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/08 ,  H04L1/00 ,  H04W72/04 ,  H04L5/00

CPC classification number: H04W72/082 ,  H04L1/0057 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0026 ,  H04L5/0041 ,  H04L5/0044 ,  H04L5/0048 ,  H04W72/0413 ,  H04W72/042 ,  H04W72/0486

Abstract: Methods and apparatuses for providing wireless messages according to various tone plans can include a system including a memory that stores instructions. The system further includes a processor coupled with the memory. The processor is configured to execute the instructions to generate a message for wireless communication according to at least one of a set of 52 tones, for allocation to an individual device, including 48 data tones and 4 pilot tones, and a set of 106 tones, for allocation to an individual device, including 102 data tones and 4 pilot tones. The processor is further configured to execute the instructions to provide the message for transmission.

Abstract translation: 用于根据各种音调计划提供无线消息的方法和装置可以包括包括存储指令的存储器的系统。 该系统还包括与存储器耦合的处理器。 处理器被配置为执行指令以根据52个音调的集合中的至少一个生成用于无线通信的消息，用于分配给单个设备，包括48个数据音调和4个导频音调以及一组106个音调， 用于分配到单个设备，包括102个数据音和4个导频音。 处理器还被配置为执行指令以提供用于传输的消息。

公开(公告)号：US09130812B2

公开(公告)日：2015-09-08

申请号：US13875638

申请日：2013-05-02

Applicant: QUALCOMM Incorporated

Inventor： Mohammad Hossein Taghavi Nasrabadi ,  Sameer Vermani ,  Lin Yang ,  Hemanth Sampath

IPC: H04L27/06 ,  H04L27/26 ,  H04L5/00

CPC classification number: H04L27/2647 ,  H04L5/0023 ,  H04L5/0053 ,  H04L27/2613 ,  H04L27/2628

Abstract: Systems, methods, and devices for wireless communication. In one aspect, an apparatus for wireless communication is provided. The apparatus includes a receiver configured to receive a wireless signal comprising a packet. At least a portion of the wireless signal is configured to be received over a bandwidth lower than or equal to 1.25 MHz. The packet is formed from at least one orthogonal frequency-division multiplexing (OFDM) symbol comprising thirty-two tones. The thirty-two tones correspond to frequency subcarriers within the bandwidth. The thirty-two tones of the at least one OFDM symbol are allocated as: twenty-four data tones, two pilot tones, five guard tones, and one direct current (DC) tone. The apparatus includes a processor configured to evaluate the wireless signal. The processor includes a transform module configured to convert the at least one OFDM symbol into a frequency domain signal using a thirty-two point mode.

Abstract translation: 用于无线通信的系统，方法和设备。 一方面，提供一种无线通信装置。 该装置包括被配置为接收包括分组的无线信号的接收机。 无线信号的至少一部分被配置为在低于或等于1.25MHz的带宽上接收。 分组由包括三十二个音调的至少一个正交频分复用（OFDM）符号形成。 32个音调对应于带宽内的频率子载波。 至少一个OFDM符号的三十二个音调被分配为：二十四个数据音调，两个导频音调，五个保护音调和一个直流（DC）音调。 该装置包括被配置为评估无线信号的处理器。 处理器包括变换模块，其被配置为使用三十二点模式将至少一个OFDM符号转换成频域信号。

公开(公告)号：US20150223247A1

公开(公告)日：2015-08-06

申请号：US14614294

申请日：2015-02-04

Applicant: QUALCOMM Incorporated

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

IPC: H04W72/04

CPC classification number: H04L5/0007 ,  H04L5/0037 ,  H04W48/00 ,  H04W72/00

Abstract: Methods and apparatus methods and apparatus for providing wireless messages according to various tone plans. In one aspect, an apparatus includes a processing system configured to allocate a resource for wireless communication to each of a plurality of devices. The resource includes at least one of a sub-band of frequencies or a subset of data tones within a single uplink or downlink tone plan. The processing system is further configured to provide the resource allocation to the devices. The processing system is further configured to process a message according to one of an uplink or downlink tone plan associated with at least one of the allocated sub-band or the allocated subset.

Abstract translation: 用于根据各种音调计划提供无线消息的方法和装置方法和装置。 一方面，一种装置包括处理系统，其配置为向多个设备中的每一个分配用于无线通信的资源。 该资源包括单个上行链路或下行链路音调方案中的频率子带或数据音调的子集中的至少一个。 处理系统还被配置为向设备提供资源分配。 处理系统还被配置为根据与所分配的子带或所分配的子集中的至少一个相关联的上行链路或下行链路音调方案中的一个来处理消息。

公开(公告)号：US20150078368A1

公开(公告)日：2015-03-19

申请号：US14559531

申请日：2014-12-03

Applicant: QUALCOMM Incorporated

Inventor： Sameer Vermani ,  Lin Yang ,  Hemanth Sampath ,  Vincent Knowles Jones, IV ,  Didier Johannes Richard Van Nee

IPC: H04W28/06 ,  H04L27/26

CPC classification number: H04W28/065 ,  H04L27/0012 ,  H04L27/2602 ,  H04L27/2613 ,  H04L27/345 ,  H04W84/12

Abstract: Certain aspects of the present disclosure present a technique for enabling a receiver to detect mode of transmission of a signal based on a common field transmitted to all the receivers. The proposed technique includes frame structure in which information about the transmission mode is transmitted in a first portion of a SIG field to all the receivers.

Abstract translation: 本公开的某些方面提供了一种用于使接收机能够基于发送到所有接收机的公共字段来检测信号的传输模式的技术。 所提出的技术包括帧结构，其中关于传输模式的信息在SIG字段的第一部分中发送到所有接收机。

公开(公告)号：US08767873B2

公开(公告)日：2014-07-01

申请号：US13690497

申请日：2012-11-30

Applicant: QUALCOMM Incorporated

Inventor： Eugene J. Baik ,  Sameer Vermani ,  Lin Yang ,  Hemanth Sampath

IPC: H04L27/00

CPC classification number: H04L5/00 ,  H04B7/0413 ,  H04B7/0671

Abstract: Methods and devices for communicating in a communication system are described herein. One aspect of the subject matter described in the disclosure provides a method of communicating over one or more space-time streams. The method includes transmitting a precoded portion of a first stream with a bandwidth of 1 MHz or less. The method further includes transmitting, when there are at least two streams, a precoded portion of a second stream with a cyclic shift delay, relative to the first stream, of 4 μs. The method further includes transmitting, when there are at least three streams, a precoded portion of a third stream with a cyclic shift delay, relative to the first stream, of 1 μs. The method further includes transmitting, when there are at least four streams, a precoded portion of a fourth stream with a cyclic shift delay, relative to the first stream, of 5 μs.

Abstract translation: 本文描述了用于在通信系统中通信的方法和设备。 在本公开中描述的主题的一个方面提供了一种在一个或多个时空流上进行通信的方法。 该方法包括以1MHz或更小的带宽传输第一流的预编码部分。 该方法还包括：当存在至少两个流时，相对于第一流的循环移位延迟的第二流的预编码部分为4μs。 该方法还包括：当存在至少三个流时，相对于第一流的循环移位延迟的第三流的预编码部分为1μs。 该方法还包括：当存在至少四个流时，相对于第一流的循环移位延迟的第五流的预编码部分为5μs。

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：US20130343433A1

公开(公告)日：2013-12-26

申请号：US13887848

申请日：2013-05-06

Applicant: Qualcomm Incorporated

Inventor： Lin Yang ,  Youhan Kim ,  Sameer Vermani ,  Tevfik Yucek ,  Hemanth Sampath

IPC: H04B1/707

CPC classification number: H04B1/707 ,  H04B17/102 ,  H04B17/26 ,  H04B17/318 ,  H04L5/0066

Abstract: Systems, methods, and devices for wireless communication are provided. In one aspect, an apparatus for wireless communication is provided. The apparatus includes a processor configured to generate a packet for transmission via a wireless signal. The packet is generated for transmission over a bandwidth of 1 MHz using at least one orthogonal frequency-division multiplexing (OFDM) symbol. The apparatus further includes a transmitter configured to transmit the packet via the wireless signal having unique power spectral density characteristics.

Abstract translation: 提供了用于无线通信的系统，方法和设备。 一方面，提供一种无线通信装置。 该装置包括处理器，其被配置为生成用于经由无线信号传输的分组。 使用至少一个正交频分复用（OFDM）符号，生成用于在1MHz的带宽上传输的分组。 该装置还包括发射机，其被配置为经由具有独特的功率谱密度特性的无线信号来传送分组。

公开(公告)号：US20130243115A1

公开(公告)日：2013-09-19

申请号：US13875638

申请日：2013-05-02

Applicant: QUALCOMM INCORPORATED

Inventor： Mohammad Hossein Taghavi Nasrabadi ,  Sameer Vermani ,  Lin Yang ,  Hemanth Sampath

IPC: H04L27/26

CPC classification number: H04L27/2647 ,  H04L5/0023 ,  H04L5/0053 ,  H04L27/2613 ,  H04L27/2628

Abstract: Systems, methods, and devices for wireless communication. In one aspect, an apparatus for wireless communication is provided. The apparatus includes a receiver configured to receive a wireless signal comprising a packet. At least a portion of the wireless signal is configured to be received over a bandwidth lower than or equal to 1.25 MHz. The packet is formed from at least one orthogonal frequency-division multiplexing (OFDM) symbol comprising thirty-two tones. The thirty-two tones correspond to frequency subcarriers within the bandwidth. The thirty-two tones of the at least one OFDM symbol are allocated as: twenty-four data tones, two pilot tones, five guard tones, and one direct current (DC) tone. The apparatus includes a processor configured to evaluate the wireless signal. The processor includes a transform module configured to convert the at least one OFDM symbol into a frequency domain signal using a thirty-two point mode.

公开(公告)号：US20130176879A1

公开(公告)日：2013-07-11

申请号：US13735937

申请日：2013-01-07

Applicant: Qualcomm Incorporated

Inventor： Tao Tian ,  Sameer Vermani ,  Lin Yang ,  Albert van Zelst

IPC: H04W24/02

CPC classification number: H04W24/02 ,  H04L25/0204 ,  H04L25/0228 ,  H04L25/03159 ,  H04W52/0209 ,  H04W72/042

Abstract: A method and apparatus for tracking amplitude and phase of a received low frequency signal comprising a walking pilot signal is disclosed, wherein the pilot signal changes in frequency a number of times according to a sequence that repeats. The design includes initializing a FIFO buffer and summing estimated channel power over the sequence to determine an initial total power. The design also includes, for a new received symbol, determining an updated power estimate for the new received symbol, placing the updated power estimate in the FIFO buffer, and removing a least current value from the FIFO buffer, and estimating amplitude of the signal using a sum of all updated power estimates in the FIFO buffer divided by the initial total power. The design may further include determining a delta phase value using maximum ratio combining scaled with a scaling factor.

Abstract translation: 公开了一种用于跟踪包括步行导频信号的接收低频信号的幅度和相位的方法和装置，其中导频信号根据重复的顺序频率改变多次。 该设计包括初始化FIFO缓冲器并对序列上的估计信道功率求和以确定初始总功率。 该设计还包括对于新的接收符号，确定新的接收符号的更新的功率估计，将更新的功率估计放置在FIFO缓冲器中，以及从FIFO缓冲器中去除最小电流值，以及使用 FIFO缓冲器中所有更新的功率估计值除以初始总功率的总和。 该设计可以进一步包括使用用比例因子缩放的最大比率组合来确定增量相位值。

公开(公告)号：US12244417B2

公开(公告)日：2025-03-04

申请号：US17121642

申请日：2020-12-14

Applicant: QUALCOMM Incorporated

Inventor： Stephen Jay Shellhammer ,  Sameer Vermani ,  Lin Yang ,  Jialing Li Chen ,  Dung Ngoc Doan ,  Bin Tian

IPC: H04L1/00 ,  H04B7/0452 ,  H04B7/06 ,  H04W24/10 ,  H04W84/12

Abstract: This disclosure provides systems, methods, and apparatus, including computer programs encoded on computer-readable media, for a link adaptation protocol in a wireless local area network (WLAN). In one aspect, the link adaptation protocol may be used to select a transmission rate option (such as a modulation and coding scheme (MCS)) for communications from a first WLAN device to a second WLAN device based on wireless channel conditions. This disclosure includes several example message sequences for the link adaptation protocol which can accommodate a variety of uplink or downlink data transmission designs, including single user (SU) and multi-user (MU) transmissions. The example message sequences may be used with orthogonal frequency division multiple access (OFDMA), multiple-input-multiple-output (MIMO), and beamformed transmissions.