公开(公告)号：US10034240B2

公开(公告)日：2018-07-24

申请号：US14572048

申请日：2014-12-16

Applicant: Intel IP Corporation

Inventor： Shahrnaz Azizi ,  Eldad Perahia ,  Guoqing C. Li ,  Robert J. Stacey ,  Thomas J. Kenney

IPC: H04L12/50 ,  H04W52/02 ,  H04W48/12 ,  H04W84/12

Abstract: Wireless devices, methods, and computer readable media for transmitting and receiving beacon frames are disclosed. A HEW device may include circuitry configured to: operate in accordance with OFDMA on a plurality of subchannels and a primary channel, and transmit a first beacon on the primary channel to one or more legacy devices. The circuitry may be further configured to transmit a second beacon on the plurality of subchannels to one or more HEW devices. The first beacon may be an 802.11 legacy beacon and the second beacon may be a HEW beacon. A HEW device may include circuitry configured to: tune to an assigned subchannel; and receive a HEW beacon on the assigned subchannel. The circuitry may be configured to: enter a power saving mode; leave the power saving mode; and receive another HEW beacon on the assigned subchannel to synchronize the HEW device with the AP.

公开(公告)号：US09906343B2

公开(公告)日：2018-02-27

申请号：US14751509

申请日：2015-06-26

Applicant: INTEL IP CORPORATION

Inventor： Shahrnaz Azizi ,  Thomas J. Kenney ,  Eldad Perahia ,  Robert Stacey

IPC: H04L5/00

CPC classification number: H04L5/0048 ,  H04L5/0007 ,  H04L5/0044

Abstract: Various embodiments are generally directed to an apparatus, method and other techniques to determine a bandwidth in a frequency band to communicate information to stations, determine an Orthogonal Frequency-Division Multiple Access (OFDMA) tone allocation scheme based on the bandwidth, the OFDMA tone allocation scheme to include one or more resource units each comprising a plurality of tones and each having a fixed location in the bandwidth, and communicate information to the stations based on the OFDMA tone allocation scheme.

公开(公告)号：US09854520B2

公开(公告)日：2017-12-26

申请号：US14671350

申请日：2015-03-27

Applicant: INTEL IP CORPORATION

Inventor： Chittabrata Ghosh ,  Chen Kojokaro ,  Eldad Perahia ,  Shahrnaz Azizi

IPC: H04W52/02 ,  H04W56/00 ,  H04W72/04 ,  H04W72/12 ,  H04L5/00 ,  H04W84/12

CPC classification number: H04W52/0216 ,  H04L5/00 ,  H04L5/0007 ,  H04L5/0037 ,  H04L5/0053 ,  H04L5/0094 ,  H04L47/10 ,  H04W56/001 ,  H04W72/1268 ,  H04W84/12 ,  Y02D70/00 ,  Y02D70/1222 ,  Y02D70/142 ,  Y02D70/144 ,  Y02D70/146 ,  Y02D70/164 ,  Y02D70/166 ,  Y02D70/22 ,  Y02D70/26

Abstract: Example systems, methods, and devices for channel access in dense wireless networks are discussed. More specifically, methods may include transmitting one or more trigger frames from an access point to one or more communication stations, the one or more trigger frames comprising a plurality of components, the plurality of components indicating whether trigger frames within a beacon interval are scheduled in a periodic or aperiodic manner, and if periodic trigger frames are scheduled, then indicating a countdown to the next trigger frame, and if aperiodic trigger frames are scheduled, then indicating the time to the next trigger frame scheduled by the access point. Methods, apparatus, and systems described herein can be applied to 802.11ax or any other wireless standard.

公开(公告)号：US09853784B2

公开(公告)日：2017-12-26

申请号：US14341055

申请日：2014-07-25

Applicant: Intel IP Corporation

Inventor： Shahrnaz Azizi ,  Thomas J. Kenney ,  Eldad Perahia

IPC: H04W4/00 ,  H04L5/00 ,  H04L27/26 ,  H04W74/04 ,  H04W52/24 ,  H04W72/04 ,  H04W74/02 ,  H04L1/00 ,  H04L27/34 ,  H04B7/0413 ,  H04B7/26 ,  H04W84/12 ,  H04W74/08 ,  H04W88/10 ,  H04W88/08

CPC classification number: H04L5/0048 ,  H04B7/0413 ,  H04B7/2615 ,  H04L1/0071 ,  H04L5/0007 ,  H04L5/001 ,  H04L5/003 ,  H04L5/0035 ,  H04L5/0037 ,  H04L5/0053 ,  H04L5/0094 ,  H04L5/0098 ,  H04L27/2602 ,  H04L27/261 ,  H04L27/3405 ,  H04L27/3483 ,  H04W52/0206 ,  H04W52/244 ,  H04W72/0406 ,  H04W72/042 ,  H04W72/0426 ,  H04W72/0453 ,  H04W72/0473 ,  H04W74/02 ,  H04W74/04 ,  H04W74/08 ,  H04W74/0808 ,  H04W84/12 ,  H04W88/08 ,  H04W88/10 ,  Y02D70/00 ,  Y02D70/122 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/449

Abstract: Embodiments of a high-efficiency WLAN (HEW) master station and method for communicating in accordance with a scheduled OFDMA technique on secondary channels are generally described herein. An access point is configured to operate as part of a basic-service set (BSS) that includes a plurality of high-efficiency WLAN (HEW) stations and a plurality of legacy stations. The BSS operates on a primary channel and one or more secondary channels. In accordance with some embodiments, the access point may communicate with one or more of the HEW stations on one or more of the secondary channels in accordance with a scheduled OFDMA communication technique when the primary channel is utilized for communication with one or more of the legacy devices.

公开(公告)号：US09806927B2

公开(公告)日：2017-10-31

申请号：US14751089

申请日：2015-06-25

Applicant: Intel IP Corporation

Inventor： Shahrnaz Azizi ,  Robert J. Stacey ,  Thomas J. Kenney ,  Eldad Perahia

IPC: H04L29/08 ,  H04W80/04 ,  H04W84/12 ,  H04L27/26

CPC classification number: H04L5/0048 ,  H04B1/40 ,  H04L27/22 ,  H04L27/2613 ,  H04L69/323 ,  H04W84/12

Abstract: Methods, apparatuses, and computer readable media for signaling high-efficiency packet formats using a legacy portion of the preamble in wireless local-area networks are disclosed. A high-efficiency (HE) wireless local area network (HEW) device including circuitry is disclosed. The circuitry may be configured to generate a HE packet comprising a legacy signal field (L-SIG) followed by one or more HE signal fields, and configure the L-SIG to signal to a second HEW device either a first packet format of the HE packet or a second packet format of the HE packet, where a length of the L-SIG modulo 3 is used to signal the first packet format or the second packet format. The circuitry may be configured to generate a duplicated L-SIG field with a polarity difference to indicate a third packet configuration of the HE packet or a fourth packet configuration of the HE packet.

公开(公告)号：US20170288933A1

公开(公告)日：2017-10-05

申请号：US15085299

申请日：2016-03-30

Applicant: Intel IP Corporation

Inventor： Ahmed Gamal Helmy Mohamed ,  Thomas J. Kenney ,  Shahrnaz Azizi

IPC: H04L27/26 ,  H04B7/08

CPC classification number: H04L27/2697 ,  H04L1/0036 ,  H04L1/0039 ,  H04L5/0023 ,  H04L5/0092 ,  H04L25/03891 ,  H04L25/067 ,  H04L27/2649 ,  H04L27/2653

Abstract: A satisfactory list detection (LD) receiver based on spatial modulation (SM) orthogonal frequency division multiplexing (OFDM) waveform is provided. In some embodiments, the LD receiver can implement a suboptimal LD detection process that relies on a reduced search space an optimal joint ML detection-based process for the SM-OFDM transmission mode. In some aspects, the overall search space for the optimal joint ML is determined by the total spectral efficiency, which can be divided into two information categories with two different search spaces defined by the number of bits of each category. As such, in some aspects, the LD receiver can permit detecting, with reduced complexity, antenna bits and data bits based on a determination of respective log-likelihood ratios.

公开(公告)号：US09668258B2

公开(公告)日：2017-05-30

申请号：US15026820

申请日：2014-02-27

Applicant: Intel IP Corporation

Inventor： Thomas J. Kenney ,  Shahrnaz Azizi ,  Eldad Perahia

IPC: H04W72/04 ,  H04W4/00 ,  H04L5/00 ,  H04L27/26 ,  H04B7/0452 ,  H04B17/336 ,  H04J11/00 ,  H04L29/06 ,  H04W24/02 ,  H04W56/00 ,  H04W52/02 ,  H04B7/0413 ,  H04W74/04 ,  H04W84/12

CPC classification number: H04W72/044 ,  H04B7/0413 ,  H04B7/0452 ,  H04B17/336 ,  H04J11/00 ,  H04J2011/0096 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/0053 ,  H04L5/0064 ,  H04L27/2601 ,  H04L27/2602 ,  H04L27/2613 ,  H04L27/2695 ,  H04L69/22 ,  H04W4/80 ,  H04W24/02 ,  H04W52/0216 ,  H04W52/0219 ,  H04W56/002 ,  H04W72/0413 ,  H04W72/0453 ,  H04W74/04 ,  H04W84/12 ,  Y02B70/30 ,  Y02D70/00 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/22

Abstract: Embodiments of a master station and method for high-efficiency Wi-Fi (HEW) communication using a multi-device HEW preamble are generally described herein. In some embodiments, the master station may select a number of long-training fields (LTFs) to be included in the multi-device HEW preamble of an HEW frame. The HEW frame may comprise a plurality of links for transmission of a plurality of streams. The master station may transmit the selected number of LTFs sequentially as part of the HEW preamble and transmit a plurality of data fields to scheduled stations during an HEW control period. Each data field may correspond to one of the links and may comprise one or more streams. The selection of the number of LTFs to be included in the HEW preamble may be based on a maximum number of streams to be transmitted on a single link.

公开(公告)号：US09510346B2

公开(公告)日：2016-11-29

申请号：US14227085

申请日：2014-03-27

Applicant: Intel IP Corporation

Inventor： Shahrnaz Azizi ,  Thomas J. Kenney ,  Eldad Perahia

IPC: H04W4/00 ,  H04W72/04 ,  H04L5/00 ,  H04L27/26 ,  H04B7/04 ,  H04W84/12

CPC classification number: H04W72/044 ,  H04B7/0413 ,  H04B7/0452 ,  H04B17/336 ,  H04J11/00 ,  H04J2011/0096 ,  H04L5/0007 ,  H04L5/0023 ,  H04L5/0048 ,  H04L5/005 ,  H04L5/0053 ,  H04L5/0064 ,  H04L27/2601 ,  H04L27/2602 ,  H04L27/2613 ,  H04L27/2695 ,  H04L69/22 ,  H04W4/80 ,  H04W24/02 ,  H04W52/0216 ,  H04W52/0219 ,  H04W56/002 ,  H04W72/0413 ,  H04W72/0453 ,  H04W74/04 ,  H04W84/12 ,  Y02B70/30 ,  Y02D70/00 ,  Y02D70/1262 ,  Y02D70/142 ,  Y02D70/22

Abstract: Embodiments of a master station and method for high-efficiency Wi-Fi (HEW) communication using traveling pilots are generally described herein. In some embodiments, the master station is arranged for communicating with a plurality of HEW and may be configured to transmit, during an initial portion of an HEW control period, a master-sync transmission that includes a multi-device HEW preamble arranged to signal and identify data fields for a plurality of scheduled HEW stations. The master station may transmit during the HEW control period the data fields with traveling pilots to the scheduled HEW stations. The master station may also receive data fields with traveling pilots transmitted by the scheduled HEW stations during the HEW control period. The traveling pilots may comprise pilot signals that are shifted among orthogonal-frequency multiplexed (OFDM) subcarriers during transmission of one or more of the data fields.

Abstract translation: 这里一般地描述使用移动导频的用于高效Wi-Fi（HEW）通信的主站和方法的实施例。 在一些实施例中，主站被布置为与多个HEW进行通信，并且可以被配置为在HEW控制周期的初始部分期间发送主同步传输，该主同步传输包括布置成信号的多设备HEW前导码 识别多个调度的HEW站的数据字段。 主站可以在HEW控制周期期间将具有旅行飞行员的数据字段发送到预定的HEW站。 在HEW控制周期期间，主站还可以接收由调度的HEW站发送的行驶导频的数据字段。 行驶导频可以包括在一个或多个数据字段的传输期间在正交频分复用（OFDM）子载波之间移位的导频信号。

公开(公告)号：US09271241B2

公开(公告)日：2016-02-23

申请号：US14304041

申请日：2014-06-13

Applicant: Intel IP Corporation

Inventor： Thomas J. Kenney ,  Eldad Perahia ,  Shahrnaz Azizi

IPC: H04W4/00 ,  H04W52/24 ,  H04B7/04 ,  H04W52/26 ,  H04W16/14 ,  H04W28/06 ,  H04W52/42 ,  H04W74/00 ,  H04W84/12 ,  H04W52/34 ,  H04W56/00

CPC classification number: H04W28/06 ,  H04B7/0452 ,  H04L5/0053 ,  H04L5/0091 ,  H04W16/14 ,  H04W52/241 ,  H04W52/267 ,  H04W52/346 ,  H04W52/42 ,  H04W56/00 ,  H04W74/006 ,  H04W84/12

Abstract: Embodiments of a system and methods for distinguishing high-efficiency Wi-Fi (HEW) packets from legacy packets are generally described herein. In some embodiments, an access point may select a value for the length field of a legacy signal field (L-SIG) that is non-divisible by three for communicating with HEW stations and may select a value for the length field that is divisible by three for communicating with legacy stations. In some embodiments, the access point may select a phase rotation for application to the BPSK modulation of at least one of the first and second symbols of a subsequent signal field to distinguish a high-throughput (HT) PPDU, a very-high throughput (VHT) PPDU and an HEW PPDU.

Abstract translation: 本文通常描述用于区分高效Wi-Fi（HEW）分组与传统分组的系统和方法的实施例。 在一些实施例中，接入点可以为不与HEW站进行通信的三分之一的遗留信号字段（L-SIG）的长度字段的值选择一个值，并且可以选择一个可以由 三个用于与传统站通信。 在一些实施例中，接入点可以选择用于应用于随后信号字段的第一和第二符号中的至少一个的BPSK调制的相位旋转，以区分高吞吐量（HT）PPDU，非常高的吞吐量 VHT）PPDU和HEW PPDU。