公开(公告)号：US10389563B2

公开(公告)日：2019-08-20

申请号：US14866167

申请日：2015-09-25

Applicant: INTEL IP CORPORATION

Inventor： Xiaogang Chen ,  Qinghua Li ,  Robert Stacey ,  Yuan Zhu ,  Chittabrata Ghosh ,  Po-Kai Huang ,  Rongzhen Yang ,  Huaning Niu ,  Jeongho Jeon

IPC: H04L27/26 ,  H04B7/0452 ,  H04W28/06 ,  H04W72/04 ,  H04W72/12 ,  H04W84/12

Abstract: Systems, apparatus, and methods to provide an indication of frequency resource unit (RU) allocation from a wireless access point (AP) to one or more station devices (STA) are disclosed. The AP may be configured to generate a protocol data unit including a high efficiency wireless (HEW) preamble that indicates the RU allocation corresponding to each of the STA. The indication of the RU allocation for each of the STA, as disclosed herein, may be encoded in fewer bits than providing a bitmap of the RU allocation for each of the STA. A predetermined RU pattern may be used to map RU (e.g., 26 tone units, 52 tone units, etc.) to a RU allocation index. This RU allocation pattern may be efficiently communicated to each of the STAs in the HEW preamble of the protocol data unit.

公开(公告)号：US10327233B2

公开(公告)日：2019-06-18

申请号：US16037752

申请日：2018-07-17

Applicant: Intel IP Corporation

Inventor： Seunghee Han ,  Yuan Zhu ,  Xiaogang Chen ,  Jong-Kae Fwu

IPC: H04W52/24 ,  H04W72/04 ,  H04W52/28 ,  H04L5/14 ,  H04W24/02 ,  H04W24/10 ,  H04W28/02 ,  H04L12/813 ,  H04L12/801 ,  H04W28/08 ,  H04L1/18 ,  H04L5/00

Abstract: Techniques are described for compressing the PUCCH resources reserved for acknowledging downlink data transmissions when those resources are implicitly signaled by EPDCCHs that schedule the downlink transmissions in TDD mode. An acknowledgement resource offset field transmitted in the EPDCCH is configured to correspond to one or more values that compress the region in PUCCH resource index space that would otherwise be reserved for the subframes of a bundling window.

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：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：US10009840B2

公开(公告)日：2018-06-26

申请号：US15272286

申请日：2016-09-21

Applicant: Intel IP Corporation

Inventor： Xiaogang Chen ,  Qinghua Li ,  Assaf Gurevitz ,  Tzahi Weisman

IPC: H04W52/02 ,  H04L5/00 ,  H04W52/30 ,  H04W84/12

CPC classification number: H04W52/0206 ,  H04L5/0044 ,  H04L5/0048 ,  H04W52/346 ,  H04W84/12 ,  Y02D70/00 ,  Y02D70/122 ,  Y02D70/1242 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/166 ,  Y02D70/22 ,  Y02D70/26

Abstract: Embodiments of an access point (AP), station (STA) and method for subcarrier scaling are generally described herein. The AP may transmit a high efficiency (HE) physical layer convergence procedure (PLCP) protocol data unit (PPDU) that includes a legacy long training field (L-LTF), a legacy signal (L-SIG) field, and an HE signal (HE-SIG) field. The HE-SIG may be based on HE-SIG symbols mapped to a group of HE subcarriers that includes legacy subcarriers and HE extension subcarriers. The L-LTF may be based on L-LTF pilot symbols mapped to the legacy subcarriers. The L-SIG may be based on L-SIG legacy symbols mapped to the legacy subcarriers and L-SIG extension pilot symbols mapped to the HE extension subcarriers. The AP may scale a per-subcarrier power of the L-SIG extension pilot symbols to match a per-subcarrier power of the L-LTF pilot symbols.

公开(公告)号：US09974095B2

公开(公告)日：2018-05-15

申请号：US15025434

申请日：2014-09-26

Applicant: Intel IP Corporation

Inventor： Xiaogang Chen ,  Qinghua Li ,  Thomas J. Kenney ,  Honggang Li ,  Eldad Perahia

IPC: H04W72/12 ,  H04B7/0452 ,  H04L27/26 ,  H04W52/52 ,  H04W72/04 ,  H04W84/12

CPC classification number: H04W72/1284 ,  H04B7/0452 ,  H04L27/2614 ,  H04W52/52 ,  H04W72/0453 ,  H04W84/12 ,  Y02D70/14

Abstract: Embodiments of a high-efficiency WLAN (HEW) master station and method for communicating in a Wireless Network are generally described herein. In some embodiments, the HEW master station comprises a receiver configured to receive an uplink multi-user multiple-input multiple-output (MU-MIMO) transmission from a plurality of scheduled HEW stations. The uplink MU-MIMO transmission may comprise at least an HEW short-training field (STF) (HEW-STF) transmitted by each of the scheduled HEW stations. The HEW-STFs received from the HEW stations are distinguishable. The master station may process the HEW-STFs received from the scheduled HEW stations to set receiver gain for reception of UL-MIMO data from the scheduled HEW stations. In some embodiments, a single automatic gain control (AGC) setting may be determined from the combined HEW-STF resulting in improved receiver performance in UL MU-MIMO.