公开(公告)号：US20170222706A1

公开(公告)日：2017-08-03

申请号：US15012427

申请日：2016-02-01

Applicant: QUALCOMM Incorporated

Inventor： Chin-Hung Chen ,  Youhan Kim ,  Albert van Zelst ,  Ning Zhang

IPC: H04B7/06 ,  H04W52/24 ,  H04B17/318

CPC classification number: H04B7/0626 ,  H04B7/0617 ,  H04B17/318 ,  H04L25/0204 ,  H04L25/0228 ,  H04W52/241 ,  H04W84/12

Abstract: A method of adjusting single-stream transmissions by a wireless device based on channel state information (CSI). The wireless device generates a sounding packet formatted for transmission via multiple spatial streams, and transmits the sounding packet to a receiving device via a single one of the multiple spatial streams. For example, the wireless device may be a single-antenna device. The wireless device further receives channel state information (CSI) from the receiving device based at least in part on the sounding packet. The wireless device then adjusts one or more characteristics of single-stream transmissions to the receiving device based at least in part on the received CSI.

公开(公告)号：US20170134989A1

公开(公告)日：2017-05-11

申请号：US14936087

申请日：2015-11-09

Applicant: QUALCOMM Incorporated

Inventor： Olaf Josef Hirsch ,  James Simon Cho ,  Ning Zhang ,  Alireza Raissinia ,  Youhan Kim ,  Kapil Rai

IPC: H04W28/26 ,  H04W74/08

CPC classification number: H04W28/26 ,  H04W74/08 ,  H04W74/0816

Abstract: Methods, systems, and devices are described for supporting simultaneous (e.g., overlapping) data communications by a wireless communication device. More specifically, the described features generally relate to supporting SBS communications by providing mechanisms to help mitigate interference and/or coordinate medium access. One mechanism involves aligning the data communications to mitigate interference. Another mechanism involves using channel reservation signal (e.g., a clear-to-send-to-self (CTS2S) signal) to help maintain simultaneous medium access. Yet another mechanism involves setting a second backoff period for a second channel based at least in part on a first backoff period for a first channel in wireless devices.

公开(公告)号：US20160338045A1

公开(公告)日：2016-11-17

申请号：US14712636

申请日：2015-05-14

Applicant: QUALCOMM Incorporated

Inventor： Olaf Josef Hirsch ,  Youhan Kim

IPC: H04W72/04 ,  H04B7/04

CPC classification number: H04W72/0446 ,  H04B7/0452 ,  H04L1/06 ,  H04L1/1812 ,  H04L1/1819

Abstract: A method of transmitting a frame of data to a receiving (RX) device with multiple antennas. A transmitting (TX) device encodes a first portion of the data frame for a first MU-MIMO stream, and encodes a second portion of the data frame for a second MU-MIMO stream. The TX device then transmits the first encoded portion via the first MU-MIMO stream to a first antenna of the RX device, and transmits the second encoded portion via the second MU-MIMO stream to a second antenna of the RX device.

Abstract translation: 一种将数据帧发送到具有多个天线的接收（RX）设备的方法。 发射（TX）设备对第一MU-MIMO流的数据帧的第一部分进行编码，并对第二MU-MIMO流的数据帧的第二部分进行编码。 然后，TX设备经由第一MU-MIMO流将第一编码部分发送到RX设备的第一天线，并且经由第二MU-MIMO流将第二编码部分发送到RX设备的第二天线。

公开(公告)号：US20160150500A1

公开(公告)日：2016-05-26

申请号：US14939278

申请日：2015-11-12

Applicant: QUALCOMM Incorporated

Inventor： Meghna Agrawal ,  Ning Zhang ,  Xiaoxin Zhang ,  Youhan Kim ,  Praveen Dua ,  Carlos Horacio Aldana

IPC: H04W64/00 ,  H04W72/04 ,  H04L5/00

CPC classification number: H04L5/0007 ,  H04L1/1685 ,  H04L1/18 ,  H04L1/1854 ,  H04L1/1896 ,  H04L2001/0093 ,  H04W84/12

Abstract: Methods and apparatuses are disclosed that may perform simultaneous ranging operations between a requester device and each of a plurality of target devices using OFDMA-based frame exchanges while maintaining a level of accuracy comparable to ranging operations that do not use OFDMA-based frame exchanges. Tone interleaving may be used so that the ranging devices may estimate channel conditions for the full frequency spectrum of the wireless medium. For example, a unique set of two or more non-adjacent groups of OFDM sub-carrier frequencies may be allocated to each of the plurality of target devices for ranging operations.

Abstract translation: 公开了可以使用基于OFDMA的帧交换在请求者设备和多个目标设备中的每一个之间执行同时测距操作的方法和设备，同时保持与不使用基于OFDMA的帧交换的测距操作相当的准确度。 可以使用音调交织，使得测距设备可以估计无线介质的全频谱的信道条件。 例如，可将两个或更多个非相邻OFDM子载波频率组的唯一集合分配给多个目标设备中的每一个用于测距操作。

公开(公告)号：US20160088630A1

公开(公告)日：2016-03-24

申请号：US14960764

申请日：2015-12-07

Applicant: QUALCOMM Incorporated

Inventor： Youhan Kim ,  James S. Cho ,  Kai Shi ,  Nlng Zhang

IPC: H04W72/04 ,  H04L5/00

CPC classification number: H04W72/0453 ,  H04L1/0643 ,  H04L5/0023 ,  H04L5/0044 ,  H04L5/0053

Abstract: A first combination of frequency bands is selected for transmitting a first data packet, and a second, different combination of frequency bands is selected for transmitting a second data packet. A data stream is divided into a first set of data and a second set of data. The first set of data is allocated to the first combination of frequency bands, and the second set of data is allocated to the second combination of frequency bands.

Abstract translation: 选择频带的第一组合用于发送第一数据分组，并且选择频带的第二不同组合来发送第二数据分组。 数据流被分为第一组数据和第二组数据。 第一组数据被分配给频带的第一组合，并且第二组数据被分配给频带的第二组合。

公开(公告)号：US20130343478A1

公开(公告)日：2013-12-26

申请号：US13887855

申请日：2013-05-06

Applicant: Qualcomm Incorporated

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

IPC: H04L27/26

CPC classification number: H04L27/2618 ,  H04L5/0023 ,  H04L5/0066 ,  H04L25/03828 ,  H04L27/2602 ,  H04W52/146 ,  H04W52/243

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.

公开(公告)号：US20130265907A1

公开(公告)日：2013-10-10

申请号：US13801632

申请日：2013-03-13

Applicant: QUALCOMM INCORPORATED

Inventor： Youhan Kim ,  Adrian H. Chadd ,  Michael R. Green ,  Ning Zhang ,  Vincent K. Jones

IPC: H04W88/06 ,  H04W88/08

CPC classification number: H04W88/06 ,  H04L5/001 ,  H04L5/0044 ,  H04L5/0064 ,  H04W48/12 ,  H04W72/048 ,  H04W76/15 ,  H04W88/08 ,  H04W88/10

Abstract: A wireless device may be configured to operate in one of two modes where each mode uses a different channel list to perform operations in accordance with the IEEE 802.11 standard. In a first mode, the wireless device operates as an access point that sets up channels using one channel list in order to facilitate communications within a basic service set (BSS). In a second mode, the wireless device uses a second channel list to operate as a station and scan for a BSS. The first channel list contains a subset of the channels contained in the second channel list. The channels in each respective channel list may be reconfigured to adapt to changes in the configuration of a BSS and the devices communicating therein.

Abstract translation: 无线设备可以被配置为以两种模式之一操作，其中每个模式使用不同的频道列表来执行根据IEEE 802.11标准的操作。 在第一模式中，无线设备作为接入点进行操作，该接入点使用一个信道列表建立信道，以促进基本业务集（BSS）内的通信。 在第二模式中，无线设备使用第二频道列表作为站并且扫描BSS。 第一频道列表包含第二频道列表中包含的频道的子集。 可以重新配置每个相应频道列表中的频道以适应BSS及其中通信的设备的配置的变化。