公开(公告)号：US20190132294A1

公开(公告)日：2019-05-02

申请号：US16177703

申请日：2018-11-01

Applicant: Intel IP Corporation

Inventor： Qinghua Li ,  Jonathan Segev ,  Benny Abramovsky ,  Danny Alexander ,  Xiaogang Chen ,  Chittabrata Ghosh ,  Feng Jiang ,  Ido Ouzieli ,  Robert Stacey

IPC: H04L29/06 ,  H04L9/32 ,  H04W12/06 ,  H04W12/10 ,  G01S13/76

Abstract: The disclosure provides some embodiments for securing long training field (LTF) sequence. A responding station (RSTA) configures a location management report (LMR) frame. The LMR frame is configured to include an LMR in respect of a previous measurement, and data to be used to generate a null data packet (NDP) for a current measurement that is to be performed following the previous measurement. The RSTA further encrypts the LMR frame using protected management frames (PMF) scheme, and transmits the encrypted LMR frame to an initiating station (ISTA) for generating an LTF sequence for the current measurement. In response to receiving an NDP announcement (NDPA) and an NDP for the current measurement from the ISTA, the RSTA generates an NDP for the current measurement based on the NDPA and the data using CCMP, and transmits the NDP to the ISTA.

公开(公告)号：US10187238B2

公开(公告)日：2019-01-22

申请号：US15828932

申请日：2017-12-01

Applicant: Intel IP Corporation

Inventor： Xiaogang Chen ,  Qinghua Li ,  Rongzhen Yang ,  Yuan Zhu ,  Hujun Yin

IPC: H04L27/26 ,  H04L5/00 ,  H04W52/32 ,  H04W72/12 ,  H04W52/34

Abstract: Apparatuses, methods, and computer readable media for signaling high efficiency short training field are disclosed. A high-efficiency wireless local-area network (HEW) station is disclosed. The HEW station may comprise circuitry configured to: receive a trigger frame comprising an allocation of a resource block for the HEW station, and transmit a high efficiency short training field (HE-STF) with a same bandwidth as a subsequent data portion, wherein the transmit is to be in accordance with orthogonal frequency division multiple access (OFDMA) and wherein the transmit is within the resource block. A subcarrier allocation for the HE-STF may match a subcarrier allocation for the subsequent data portion. The HE-STF and the subsequent data portion may be transmitted with a same power. A total power of active subcarriers of the HE-STF may be equal to or proportional to a second total of data subcarriers and pilot subcarriers of the subsequent data portion.

公开(公告)号：US10158406B2

公开(公告)日：2018-12-18

申请号：US15216378

申请日：2016-07-21

Applicant: Intel IP Corporation

Inventor： Yuan Zhu ,  Qinghua Li ,  Xiaogang Chen ,  Jong-kae Fwu

IPC: H04B7/04 ,  H04B7/06 ,  H04L5/00 ,  H04B7/0456 ,  H04B7/0417 ,  H04B7/0452 ,  H04W84/04

Abstract: Various embodiments include an apparatus to be employed by an enhanced Node B (eNB), the apparatus comprising communication circuitry to receive, from a user equipment (UE), feedback information and control circuitry, coupled with the communication circuitry, to identify a codeword from a three-dimensional codebook based on the feedback information received from the UE, wherein the communication circuitry is further to precode data to be transmitted to the UE based on the codeword. An apparatus to be employed by a UE and additional methods are described.

公开(公告)号：US20180351607A1

公开(公告)日：2018-12-06

申请号：US16031438

申请日：2018-07-10

Applicant: Intel IP Corporation

Inventor： Yuan Zhu ,  Qinghua Li ,  Xiaogang Chen ,  Jong-Kae Fwu

IPC: H04B7/0456 ,  H04B7/06 ,  H04B7/0452 ,  H04L5/00 ,  H04B7/0417 ,  H04W84/04

CPC classification number: H04B7/046 ,  H04B7/0417 ,  H04B7/0452 ,  H04B7/0469 ,  H04B7/0478 ,  H04B7/0486 ,  H04B7/063 ,  H04B7/0639 ,  H04B7/0647 ,  H04B7/065 ,  H04L5/0014 ,  H04L5/0026 ,  H04W84/042

Abstract: Various embodiments include an apparatus to be employed by an enhanced Node B (eNB), the apparatus comprising communication circuitry to receive, from a user equipment (UE), feedback information and control circuitry, coupled with the communication circuitry, to identify a codeword from a three-dimensional codebook based on the feedback information received from the UE, wherein the communication circuitry is further to precode data to be transmitted to the UE based on the codeword. An apparatus to be employed by a UE and additional methods are described.

公开(公告)号：US10148330B2

公开(公告)日：2018-12-04

申请号：US15396071

申请日：2016-12-30

Applicant: Intel IP Corporation

Inventor： Feng Jiang ,  Qinghua Li ,  Xiaogang Chen ,  Yuan Zhu ,  Wenting Chang ,  Xintian E. Lin

IPC: H04L12/26 ,  H04B7/06 ,  H04B7/0452

Abstract: Methods, apparatuses, computer readable media for beamforming smoothing and indication in a wireless network are disclosed. An apparatus of a wireless device comprising processing circuitry is disclosed. The processing circuitry is configured to decode a null data packet (NDP). The processing circuitry is further configured to determine beamforming vectors or matrixes from a channel matrix estimate from the NDP, and smooth the beamforming vectors or matrixes. The processing circuitry is further configured to configure the station to transmit feedback, the feedback including the smooth beamforming vectors or matrixes, and decode a downlink (DL) physical layer convergence procedure (PLCP) protocol data unit (PPDU)(DL PPDU) from the access point where the DL PPDU beamformed based on the smooth beamforming vectors or matrixes.

公开(公告)号：US10142942B2

公开(公告)日：2018-11-27

申请号：US15675475

申请日：2017-08-11

Applicant: Intel IP Corporation

Inventor： Po-Kai Huang ,  Robert J. Stacey ,  Qinghua Li ,  Rongzhen Yang

IPC: H04W52/18 ,  H04W74/00 ,  H04W74/08 ,  H04L29/06 ,  H04W52/24 ,  H04W84/12

Abstract: Apparatus, computer readable medium, and method for generating and receiving signal fields in a high efficiency wireless local-area network (WLAN) are disclosed. A high-efficiency wireless local-area network (HEW) device including circuitry is disclosed. The circuitry may be configured to: receive a physical (PHY) header or media access control (MAC) header from a second HEW station, wherein the PHY header or MAC header comprises an indication of a spatial reuse opportunity and a defer duration; adjust one or more parameters to determine whether or not the wireless medium is in use; and determine whether to transmit within the spatial reuse opportunity based on the adjusted one or more parameters. The circuitry may be configured to adjust one or more parameters to determine whether or not the wireless medium is in use in where the parameters are signal detect (SD) threshold, a mid-packet detection (MPD) threshold, and an energy detection (ED) threshold.

公开(公告)号：US10123329B2

公开(公告)日：2018-11-06

申请号：US14998130

申请日：2015-12-26

Applicant: Intel IP Corporation

Inventor： Qinghua Li ,  Xiaogang Chen ,  Yuan Zhu ,  Robert Stacey ,  Hujun Yin

IPC: H04W72/04 ,  H04B7/0413 ,  H04B7/0456 ,  H04L25/02 ,  H04L27/26 ,  H04B7/0452

Abstract: Embodiments for long training field (LTF) sequences or other types of sequences in uplink multi-user multiple-input multiple-output communications are provided. The LTF sequences can permit channel estimation, including determination of carrier frequency offsets. In some embodiments, an LTF sequence can be formatted and/or conveyed without reliance on pilot tones. In other embodiments, the LTF sequence can rely on pilot tones, where a sequence associated with the pilot tones can include elements that are orthogonal among transmitter station devices that communicate according to MU-MIMO.

公开(公告)号：US10091709B2

公开(公告)日：2018-10-02

申请号：US14779559

申请日：2013-12-20

Applicant: Intel IP Corporation

Inventor： Rongzhen Yang ,  Huaning Niu ,  Hujun Yin ,  Qinghua Li

IPC: H04W56/00 ,  H04W48/14 ,  H04W48/16 ,  H04W48/18 ,  H04W8/00 ,  H04W4/02 ,  H04W8/02 ,  H04W36/24 ,  H04W48/20 ,  H04W4/90 ,  H04W84/04 ,  H04W84/18

Abstract: Embodiments described herein relate generally to a user equipment (“UE”) that is to transmit and receive signals associated with synchronization. The UE may be receive signals associated with synchronization from a plurality of synchronization sources, such as an evolved Node B (“eNB”), a global navigation satellite system (“GNSS”), or another UE. The UE may synchronize to a signal received from a synchronization source based on a priority associated with that synchronization source and/or signal. However, if the UE does not receive any signals associated with synchronization, the UE may generate and transmit a signal that indicates a request for synchronization.

公开(公告)号：US20180262984A1

公开(公告)日：2018-09-13

申请号：US15913207

申请日：2018-03-06

Applicant: Intel IP Corporation

Inventor： Po-Kai Huang ,  Robert J. Stacey ,  Chittabrata Ghosh ,  Laurent Cariou ,  Qinghua Li

IPC: H04W52/02 ,  H04B7/0452 ,  H04L5/00 ,  H04W74/00

CPC classification number: H04W52/0209 ,  H04B7/0452 ,  H04L5/0023 ,  H04L5/0055 ,  H04W48/20 ,  H04W74/006 ,  H04W74/02 ,  Y02D70/00 ,  Y02D70/1226 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/26 ,  Y02D70/442

Abstract: Methods, computer readable media, and wireless apparatuses are disclosed. The apparatus comprising a memory and processing circuitry coupled to the memory. The processing circuitry is configured to: associate with a master station, decode a trigger frame or a multi-user request-to-send (MU-RTS) frame from the master station, where the trigger frame or the MU-RTS frame comprises a first duration and a transmitter address, and respond to the trigger frame or the MU-RTS frame if a network allocation vector (NAV) is not set, or if the NAV is set and a saved transmission opportunity (TXOP) holder address for the NAV is the same as the transmitter address of the MU-RTS or trigger frame and the trigger frame or MU-RTS indicates the station is to respond.

公开(公告)号：US20180255581A1

公开(公告)日：2018-09-06

申请号：US15906190

申请日：2018-02-27

Applicant: Intel IP Corporation

Inventor： Po-Kai Huang ,  Robert J. Stacey ,  Qinghua Li

IPC: H04W74/08 ,  H04L5/00 ,  H04B7/0452 ,  H04W84/12

Abstract: Computer readable media, methods, and apparatuses to determine whether to respond to a frame based on a network allocation vector. An apparatus of a station comprising memory and processing circuitry coupled to the memory is disclosed. The processing circuitry is configured to: decode a frame comprising a first duration and a first transmitter address, if the frame is a trigger frame or a multi-user request-to-send (MU-RTS) frame from a master station of a basic service set (BSS), respond to the trigger frame or the MU-RTS frame if the trigger frame or MU-RTS frame comprises a NAV indicator that indicates not to consider a network allocation vector (NAV). The indication may be an indication in a physical header or an indication in a media access control header.