公开(公告)号：US10057832B2

公开(公告)日：2018-08-21

申请号：US15048003

申请日：2016-02-19

Applicant: QUALCOMM Incorporated

Inventor： Ning Zhang ,  Xiaoxin Zhang ,  Carlos Horacio Aldana ,  Youhan Kim

IPC: H04J3/06 ,  H04W40/02 ,  H04L5/00 ,  H04L27/26 ,  H04W64/00 ,  H04W84/12

CPC classification number: H04W40/02 ,  H04L5/0055 ,  H04L27/2601 ,  H04W64/00 ,  H04W84/12

Abstract: Apparatuses and methods are disclosed that may perform ranging operations between a first device and a second device. The second device transmits an FTM request frame indicating a number of supported non-legacy ACK frame formats, and receives a first FTM frame indicating capabilities of the first device to receive each of the non-legacy ACK frame formats supported by the second device. The second device selects one of the non-legacy ACK frame formats or a legacy ACK frame format based, at least in part, on the indicated capabilities of the first device, and then transmits ACK frames using the selected frame format during the ranging operation.

公开(公告)号：US10021736B2

公开(公告)日：2018-07-10

申请号：US14696952

申请日：2015-04-27

Applicant: QUALCOMM Incorporated

Inventor： Olaf Josef Hirsch ,  Guido Robert Frederiks ,  Zhanfeng Jia ,  Youhan Kim ,  Yixiang Li ,  Ning Zhang

IPC: H04W88/06 ,  H04L27/00 ,  H04L5/14 ,  H04L27/26 ,  H04L5/00

CPC classification number: H04W88/06 ,  H04L5/001 ,  H04L5/0073 ,  H04L5/143 ,  H04L27/0008 ,  H04L27/0014 ,  H04L27/2657 ,  H04L27/2662

Abstract: A method and apparatus for concurrent wireless communications on multiple channels of the same frequency band. A wireless device receives a first data signal via a first transceiver chain while concurrently initiating a transmission of a second data signal via a second transceiver chain of the wireless device. The wireless device suspends updates to one or more tracking loops of the first transceiver chain in response to initiating the transmission of the second data signal. The updates to the one or more tracking loops may be suspended prior to transmitting the second set of data from the second transceiver chain. The wireless device may subsequently resume updates to the one or more tracking loops of the first transceiver chain after completing the transmission of the second data signal.

公开(公告)号：US20180048450A1

公开(公告)日：2018-02-15

申请号：US15672528

申请日：2017-08-09

Applicant: QUALCOMM Incorporated

Inventor： Alireza Raissinia ,  Ravi Gidvani ,  Ning Zhang

IPC: H04L5/00 ,  H04L5/14 ,  H04L1/00

CPC classification number: H04L5/0055 ,  H04L1/0003 ,  H04L1/0625 ,  H04L1/0631 ,  H04L1/0675 ,  H04L5/1438 ,  H04L27/0008 ,  H04L27/0012 ,  H04W74/00 ,  H04W74/002 ,  H04W74/08

Abstract: Methods, systems, and devices for wireless communication are described. Wireless devices may use multiple transmission modes to enable association and authentication procedures for wireless devices with different capabilities. For example, a station may receive, in response to a broadcast probe request, a probe response frame formatted according to a first transmission mode. The station may then transmit a second probe request frame formatted according to the first transmission mode. At some later time, the station may identify that the second probe request frame was not received by the wireless device, and may transmit another probe request frame formatted according to an extended range transmission mode. The station may then establish a connection with the wireless device by completing an association and authentication procedure, and proceed to transmit data or control frames formatted according to the extended range transmission mode.

公开(公告)号：US09813206B2

公开(公告)日：2017-11-07

申请号：US14846529

申请日：2015-09-04

Applicant: QUALCOMM Incorporated

Inventor： Youhan Kim ,  Ning Zhang

IPC: H04B1/16 ,  H04L5/00 ,  H04L1/00 ,  H04L1/06 ,  H04B7/0413 ,  H04W24/02 ,  H04L27/00 ,  H04L27/34

CPC classification number: H04L5/0044 ,  H04B1/16 ,  H04B7/0413 ,  H04L1/0003 ,  H04L1/0009 ,  H04L1/0028 ,  H04L1/06 ,  H04L5/001 ,  H04L5/0053 ,  H04L5/0091 ,  H04L27/0006 ,  H04L27/34 ,  H04L2001/0092 ,  H04W24/02

Abstract: A method for transmitting information in a wireless system is provided. In this method, the traffic on a plurality of channels can be determined. A bandwidth for a packet can be selected based on the traffic and available channel bandwidths. A modulation and a coding rate can be selected from a plurality of modulations and associated coding rates. The modulation and coding rate can be applied to a segment of the packet, wherein each segment includes one or more bandwidth units. The packet including the selected modulation and coding rate therein can be transmitted on at least one channel

公开(公告)号：US09743408B2

公开(公告)日：2017-08-22

申请号：US14960764

申请日：2015-12-07

Applicant: QUALCOMM Incorporated

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

IPC: H04B7/00 ,  H04W72/04 ,  H04L1/06 ,  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.

公开(公告)号：US09730151B2

公开(公告)日：2017-08-08

申请号：US14695613

申请日：2015-04-24

Applicant: QUALCOMM Incorporated

Inventor： Zhanfeng Jia ,  Ning Zhang ,  David Kuochieh Su ,  Xuetao Chen

IPC: H04W48/18 ,  H04W48/16 ,  H04L1/16 ,  H04W72/04 ,  H04W48/20

CPC classification number: H04W48/18 ,  H04L1/1607 ,  H04W48/16 ,  H04W48/20 ,  H04W72/0406

Abstract: A system and method are disclosed that may allow a STA to request one or more non-associated APs to initiate channel sounding operations with the STA. In response to the request, a number of the non-associated APs may send one or more NDPs to the STA. The STA may use the received NDPs to determine a goodput value for each of the number of non-associated APs. The STA may then use the determined goodput values to select one of the number of non-associated APs with which to associate. Thereafter, the STA may initiate an association operation with the selected AP.

公开(公告)号：US20170180179A1

公开(公告)日：2017-06-22

申请号：US15450773

申请日：2017-03-06

Applicant: QUALCOMM Incorporated

Inventor： Kai Shi ,  Ning Zhang

IPC: H04L27/26 ,  H04L25/02 ,  H04B7/0413

CPC classification number: H04L5/0048 ,  H04B7/0413 ,  H04B7/0421 ,  H04L25/0204 ,  H04L25/0224 ,  H04L25/023 ,  H04L27/2657 ,  H04L27/2672 ,  H04L27/2675 ,  H04L27/2695

Abstract: In MIMO a wireless node's receive chain demodulation function is enhanced to include phase tracking using very high-throughput long training fields (VHT-LTFs) embedded in a frame preamble. Single stream pilot tones are added during transmission of VHT-LTFs. A receiver estimates the channel using the pilot tones in a first set of VHT-LTFs, and estimates the phase of the pilot tones using a second set of VHT-LTFs. The phase estimation receiver estimates the channel using the pilot tones in a first set of VHT-LTFs. The phase estimation is continuously applied to other received data tones throughout the VHT-LTFs of data symbols. Phase errors due to PLL mismatches and phase noise are reduced at reception, leading to better signal to noise ratio for different levels of drift and frequency offset.

公开(公告)号：US20170134187A1

公开(公告)日：2017-05-11

申请号：US15260144

申请日：2016-09-08

Applicant: QUALCOMM Incorporated

Inventor： Chin-Hung Chen ,  Ning Zhang ,  Youhan Kim

IPC: H04L25/02 ,  H04B7/06 ,  H04L27/26 ,  H04B7/04

CPC classification number: H04L25/0202 ,  H04B7/0413 ,  H04B7/0452 ,  H04B7/0617 ,  H04B7/0619 ,  H04B7/0626 ,  H04L27/2601 ,  H04W72/0413 ,  H04W72/042 ,  H04W84/12

Abstract: A method for sending data includes receiving, at a first station of a plurality of stations, a trigger frame from an access point of a wireless network. The method also includes determining a downlink channel estimation based on the trigger frame and sending the downlink channel estimation to the access point. The method further includes receiving uplink channel data from the access point in response to sending the downlink channel estimation. The method also includes sending data to the access point based on the uplink channel data.

公开(公告)号：US20170064633A1

公开(公告)日：2017-03-02

申请号：US15246423

申请日：2016-08-24

Applicant: QUALCOMM Incorporated

Inventor： Zhanfeng Jia ,  Alireza Raissinia ,  Alfred Asterjadhi ,  James Simon Cho ,  Sandip HomChaudhuri ,  Sumeet Kumar ,  Simone Merlin ,  Ning Zhang ,  Ashok Ranganath ,  Ian O'Donnell ,  Jason Young ,  BadriSrinvasan Sampathkumar

IPC: H04W52/02

CPC classification number: H04W52/0258 ,  H04W52/0206 ,  H04W52/0216 ,  H04W52/0219 ,  H04W52/0225 ,  H04W52/0229 ,  Y02D70/00 ,  Y02D70/142 ,  Y02D70/22

Abstract: Methods, systems, and devices are described for saving power in wireless communications. One aspect includes providing an indication of a sleep duration for transmission to a wireless node, communicating with the wireless node during a target wakeup time (TWT), wherein the communication comprises at least one of providing data for transmission to the wireless node or obtaining data received from the wireless node, and refraining from providing data for transmission to the wireless node for at least the indicated sleep duration based at least in part on timing of the communication. Another aspect includes receiving an indication of a sleep duration from a wireless node, communicating with the wireless node during a time slot of a TWT, and entering a sleep mode for the indicated sleep duration based at least in part on timing of the communication with the wireless node during the time slot of the TWT.

Abstract translation: 描述了在无线通信中节省功率的方法，系统和设备。 一个方面包括在目标唤醒时间（TWT）期间提供用于传输到无线节点的睡眠持续时间的指示，与无线节点进行通信，其中该通信包括提供用于传输到无线节点的数据或获得数据的至少一个 从所述无线节点接收，并且至少部分地基于所述通信的定时，避免提供用于至少所指示的睡眠持续时间的无线节点传输的数据。 另一方面包括从TWT接收来自无线节点的睡眠持续时间的指示，在TWT的时隙期间与无线节点进行通信，以及至少部分地基于与所述无线节点的通信的定时进入针对所指示的睡眠持续时间的睡眠模式 无线节点在TWT的时隙。

公开(公告)号：US20170041879A1

公开(公告)日：2017-02-09

申请号：US15296905

申请日：2016-10-18

Applicant: QUALCOMM Incorporated

Inventor： David Kuochieh Su ,  Ning Zhang

IPC: H04W52/02 ,  H04W12/06 ,  H04L29/06 ,  G06F21/32 ,  G06F21/44

CPC classification number: H04W52/0264 ,  G06F21/32 ,  G06F21/44 ,  H04L63/0861 ,  H04L63/0876 ,  H04W12/06 ,  Y02D70/00 ,  Y02D70/166 ,  Y02D70/26

Abstract: A personal identification device may conserve power by delegating one or more operations to another device. For example, the one or more operations may be associated with the authentication of the personal identification device. In one example, the personal identification device may determine an amount of power greater than a power threshold will be consumed by the personal identification device to perform the one or more operations. The personal identification device may determine it can communicate with a mobile device that is capable of performing the one or more operations, and may then delegate the one or more operations to the mobile device to conserve power. In one example, the personal identification device may receive the results of the one or more operations from the mobile device, and may provide data associated with the results to a personal identification device detector for authentication of the personal identification device.

Abstract translation: 个人识别设备可以通过将一个或多个操作委托给另一个设备来节省电力。 例如，一个或多个操作可以与个人识别装置的认证相关联。 在一个示例中，个人识别装置可以确定大于功率阈值的功率量将由个人识别装置消耗以执行一个或多个操作。 个人识别装置可以确定它可以与能够执行一个或多个操作的移动设备进行通信，然后可以将一个或多个操作委托给移动设备以节省功率。 在一个示例中，个人识别设备可以从移动设备接收一个或多个操作的结果，并且可以将与结果相关联的数据提供给个人识别设备检测器以用于个人识别设备的认证。