公开(公告)号：US20240064716A1

公开(公告)日：2024-02-22

申请号：US18498701

申请日：2023-10-31

Applicant: Minyoung PARK ,  Wei MAO ,  Laurent CARIOU ,  Ehud RESHEF ,  Danny ALEXANDER ,  Daniel BRAVO ,  Chen KOJOKARO ,  Hosein NIKOPOUR

Inventor： Minyoung PARK ,  Wei MAO ,  Laurent CARIOU ,  Ehud RESHEF ,  Danny ALEXANDER ,  Daniel BRAVO ,  Chen KOJOKARO ,  Hosein NIKOPOUR

IPC: H04W72/0446 ,  H04L5/00 ,  H04W74/08

CPC classification number: H04W72/0446 ,  H04L5/0053 ,  H04W74/0816

Abstract: This disclosure describes systems, methods, and devices related to enhanced transmission. A device may generate an aggregated medium access control protocol data unit (A-MPDU) frame, wherein the A-MPDU is associated with transmission of n Network Coding (NC) encoded frames. The device may divide the A-MPDU frame into k data frames and (n−k) parity frames within the A-MPDU frame. The device may transmit the k data frames. The device may transmit to a station device (STA) at least one of the (n−k) parity frames separately after the data frames in response to packet drops in the k data frames.

公开(公告)号：US20210067285A1

公开(公告)日：2021-03-04

申请号：US17094779

申请日：2020-11-10

Applicant: Laurent Cariou ,  Nir Balaban ,  Daniel Bravo ,  Dor Chay ,  Xiaogang Chen ,  Feng Jiang ,  Thomas J. Kenney ,  Qinghua Li ,  Ehud Reshef

Inventor： Laurent Cariou ,  Nir Balaban ,  Daniel Bravo ,  Dor Chay ,  Xiaogang Chen ,  Feng Jiang ,  Thomas J. Kenney ,  Qinghua Li ,  Ehud Reshef

IPC: H04L5/00 ,  H04L27/26 ,  H04W74/08

Abstract: This disclosure describes systems, methods, and devices related to enhanced bandwidth selection for wireless devices. A device may generate a request frame with at least one of a first indication of a bandwidth for which a second device is to measure a first noise level or a second indication of a resource unit for which the second device is to measure a second noise level. The device may send the request frame to the second device. The device may identify a response frame received from the second device, the response frame having a third indication of the first noise level or the second noise level and a fourth indication of the bandwidth or the resource unit. The device may determine, based on the first noise level or the second noise level, a parameter associated with a subsequent frame to send to the second device.

公开(公告)号：US20140195198A1

公开(公告)日：2014-07-10

申请号：US13738472

申请日：2013-01-10

Applicant: Ehud Reshef ,  Sumeet Sandhu ,  Songnan Yang ,  Kelly Hoffman ,  Kristoffer Fleming ,  Hossein Alavi

Inventor： Ehud Reshef ,  Sumeet Sandhu ,  Songnan Yang ,  Kelly Hoffman ,  Kristoffer Fleming ,  Hossein Alavi

IPC: G01J1/44 ,  G06F17/00

CPC classification number: G06F17/00 ,  G01J1/429 ,  H04W4/026 ,  H04W4/029 ,  H04W4/06 ,  H04W4/38 ,  H04W4/90

Abstract: The present application discloses devices, systems and methods for establishing and utilizing a UV sensing network to harness the efficacy of distributed UV sensing to produce improved accuracy of UV exposure measurement using mobile devices. This may be accomplished by “crowd sourcing”, i.e. having multiple devices work collaboratively to measure the UV exposure. The collaboration can be implemented in many potential ways, such as, using a server based architecture where devices connect to a specific “UV measurements server” to provide measurements and receive aggregate estimated exposure levels, and/or by using a peer-to-peer architecture, where devices in a specific region creates a local ad-hoc UV sensing network.

Abstract translation: 本申请公开了用于建立和利用UV感测网络以利用分布式UV感测的功效以产生使用移动设备的UV曝光测量的改进的准确度的设备，系统和方法。 这可以通过“群体采购”来实现，即，多个设备协同工作以测量UV曝光。 协作可以以许多潜在的方式实现，例如使用基于服务器的架构，其中设备连接到特定的“UV测量服务器”以提供测量和接收总体估计的暴露水平，和/或通过使用对等 架构，其中特定区域中的设备创建本地自组织UV感测网络。

公开(公告)号：US20090180451A1

公开(公告)日：2009-07-16

申请号：US12349758

申请日：2009-01-07

Applicant: Yaron Alpert ,  Jonathan Segev ,  Ehud Reshef

Inventor： Yaron Alpert ,  Jonathan Segev ,  Ehud Reshef

IPC: H04W84/10

CPC classification number: H04W72/1215 ,  H04M1/7253 ,  H04W88/06

Abstract: A novel and useful apparatus for and method of coordinating the allocation of transmission and reception availability and/or unavailability periods for use in a communications device incorporating collocated multiple radios. The mechanism provide both centralized and distributed coordination to enable the coordination (e.g., to achieve coexistence) of multiple radio access communication devices (RACDs) collocated in a single device such as a mobile station. A distributed activity coordinator modifies the activity pattern of multiple RACDs. The activity pattern comprises a set of radio access specific modes of operation, (e.g., IEEE 802.16 Normal, Sleep, Scan or Idle modes, 3GPP GSM/EDGE operation mode (PTM, IDLE, Connected, DTM modes), etc.) and a compatible set of wake-up events, such as reception and transmission availability periods. To prevent interference and possible loss of data, a radio access is prevented from transmitting or receiving data packets while another radio access is transmitting or receiving. In the event two or more RATs desire to be active at the same time, the mechanism negotiates an availability pattern between the MS and a corresponding BS to achieve coordination between the RATs.

Abstract translation: 一种用于协调用于并入多个无线电的通信设备中的发送和接收可用性和/或不可用时间段的分配的新颖有用的装置和方法。 该机制提供集中式和分布式协调，以实现并置在诸如移动站的单个设备中的多个无线电接入通信设备（RACD）的协调（例如，实现共存）。 分布式活动协调器修改多个RACD的活动模式。 活动模式包括一组无线电接入特定的操作模式（例如，IEEE 802.16标准，睡眠，扫描或空闲模式，3GPP GSM / EDGE操作模式（PTM，IDLE，连接，DTM模式）等）和 兼容的一组唤醒事件，如接收和传输可用性周期。 为了防止数据的干扰和可能的丢失，防止无线电接入在另一无线电接入正在发送或接收时发送或接收数据分组。 在两个或更多个RAT期望同时活动的情况下，机制协商MS与对应的BS之间的可用性模式以实现RAT之间的协调。

公开(公告)号：US06977977B1

公开(公告)日：2005-12-20

申请号：US09792018

申请日：2001-02-20

Applicant: Andrew Dubrovin ,  Evgeny Yakhnich ,  Ehud Reshef

Inventor： Andrew Dubrovin ,  Evgeny Yakhnich ,  Ehud Reshef

IPC: H03D1/04 ,  H03D1/06 ,  H03D3/00 ,  H03K5/01 ,  H03K6/04 ,  H04L1/00 ,  H04L25/02 ,  H04L25/08 ,  H04L27/38

CPC classification number: H04L27/3863 ,  H03D3/008 ,  H03D3/009 ,  H04L1/0054 ,  H04L1/0059 ,  H04L25/0216 ,  H04L25/0224

Abstract: A novel and useful apparatus for and method of I/Q gain mismatch compensation for use in a communications receiver. The invention is operative to calculate an estimate of the I/Q gain mismatch. Each input sample is subsequently multiplied by the inverse of the estimate to generate compensated samples. The training sequence portion of the uncompensated input samples is used to generate the I/Q gain mismatch estimate. In accordance with the present invention, the H matrix used in calculating the gain mismatch estimate is pre-calculated for several channel lengths and stored in memory. An estimate of the channel is generated which provides the channel length and the location in the input sample buffer of the first training sequence sample to be used in calculating the gain mismatch estimate. The channel length is used to determine the number of training sequence samples to be used and to select one of the previously calculated H matrices.

Abstract translation: 一种用于通信接收机的I / Q增益失配补偿的新颖有用的装置和方法。 本发明可用于计算I / Q增益失配的估计。 随后将每个输入样本乘以估计的倒数，以产生补偿样本。 未补偿输入样本的训练序列部分用于产生I / Q增益失配估计。 根据本发明，用于计算增益失配估计的H矩阵被预先计算出几个信道长度并存储在存储器中。 产生通道的估计，其提供要用于计算增益失配估计的第一训练序列样本的输入采样缓冲器中的信道长度和位置。 通道长度用于确定要使用的训练序列样本的数量，并选择先前计算的H矩阵中的一个。

公开(公告)号：US06731700B1

公开(公告)日：2004-05-04

申请号：US09754566

申请日：2001-01-04

Applicant: Evgeny Yakhnich ,  Ehud Reshef

Inventor： Evgeny Yakhnich ,  Ehud Reshef

IPC: H04L2706

CPC classification number: H04L1/0064 ,  H04L1/0054

Abstract: An apparatus for and method of generating soft decision information from a sequence of hard symbol decisions output from a decoder in a concatenated communications receiver. Soft symbol decisions are computed given hard symbol decisions from the equalizer, channel estimation information (i.e. FIR filter taps used to estimate the channel), and the input samples received from the channel. The log likelihood ratio (LLR) for all symbol possibilities is calculated by computing the conditional probability of the input sample sequence given the hard symbol decision sequence. The noise variance is optionally used in computing the soft output values, thus improving the overall performance of the receiver. In one embodiment, symbol vectors are calculated beforehand and stored in a table. An error vector calculator functions to calculate an error vector that is applied to soft output calculation units. Each soft output calculation unit functions to generate a soft output value for a particular symbol candidate.

Abstract translation: 一种用于从连续通信接收机中的解码器输出的硬符号决定序列生成软判决信息的装置和方法。 根据来自均衡器的信号估计信息（即用于估计信道的FIR滤波器抽头）和从信道接收到的输入样本，计算给出硬符号判定的软符号判定。 通过计算给定硬符号判定序列的输入采样序列的条件概率来计算所有符号可能性的对数似然比（LLR）。 噪声方差可选地用于计算软输出值，从而提高接收机的整体性能。 在一个实施例中，事先计算符号向量并存储在表中。 误差向量计算器用于计算应用于软输出计算单位的误差向量。 每个软输出计算单元用于为特定符号候选产生软输出值。

公开(公告)号：US20230246757A1

公开(公告)日：2023-08-03

申请号：US18192865

申请日：2023-03-30

Applicant: Dibakar Das ,  Dmitry Akhmetov ,  Laurent Cariou ,  Ehud Reshef

Inventor： Dibakar Das ,  Dmitry Akhmetov ,  Laurent Cariou ,  Ehud Reshef

IPC: H04L5/00 ,  H04W52/36

CPC classification number: H04L5/0035 ,  H04L5/0044 ,  H04W52/367

Abstract: This disclosure describes systems, methods, and devices related to scheduling asynchronous transmissions by other access point (AP) devices in a multi-AP environment. A method may include a coordinating AP identifying a first time for a first coordinated AP device to send a first physical layer (PHY) protocol data unit (PPDU) using a first frequency segment; identifying a second time different than the first time for a second coordinated device to send a second PPDU using a second frequency segment; generating one or more frames comprising indications that the first AP device is to send the first PPDU using the first frequency segment and that the second AP device is to send the second PPUD using the second frequency segment; and causing to send the one or more frames to the first coordinated AP device and the second coordinated AP device.

公开(公告)号：US20220338260A1

公开(公告)日：2022-10-20

申请号：US17844237

申请日：2022-06-20

Applicant: Dave A. Cavalcanti ,  Dibakar Das ,  Laurent Cariou ,  Dmitry Vadimovich Akhmetov ,  Shahrnaz Azizi ,  Xiaogang Chen ,  Gadi Shor ,  Ehud Reshef ,  Juan Fang

Inventor： Dave A. Cavalcanti ,  Dibakar Das ,  Laurent Cariou ,  Dmitry Vadimovich Akhmetov ,  Shahrnaz Azizi ,  Xiaogang Chen ,  Gadi Shor ,  Ehud Reshef ,  Juan Fang

IPC: H04W74/08

Abstract: An access point station (AP) communicates with a plurality of non-AP stations (STAs) within a synchronized transmission opportunity (S-TXOP). The S-TXOP may comprise an S-TXOP trigger followed by a plurality of S-TXOP slots. After transmission of the S-TXOP trigger, the AP may encode, for transmission within an S-TXOP slot, a downlink (DL) multi-user physical layer protocol data unit (DL MU-PPDU). The DL MU-PPDU may include a preamble followed by a data field. To indicate that a previously signaled resource unit (RU) allocation is to be used during the S-TXOP slot, the AP may encode the preamble to include an allocation ID of the previously signaled RU allocation in a signal field (SIG) of the preamble and to include a SIG-2 presence indicator to indicate that a second signal field (SIG-2) is not included in the preamble.

公开(公告)号：US20190280919A1

公开(公告)日：2019-09-12

申请号：US16422275

申请日：2019-05-24

Applicant: Bahareh Sadeghi ,  Thomas J. Kenney ,  Laurent Cariou ,  Ehud Reshef ,  Ofer HAREUVENI

Inventor： Bahareh Sadeghi ,  Thomas J. Kenney ,  Laurent Cariou ,  Ehud Reshef ,  Ofer HAREUVENI

IPC: H04L12/24 ,  H04W72/04 ,  H04L27/26 ,  H04L29/08 ,  H04L12/26

Abstract: Apparatuses, methods, and computer readable media for channel bonding and bonded channel access. The apparatus comprising processing circuitry configured to: gain access to a first 10 MHz channel and to a second 10 MHz channel, and encode a physical layer (PHY) protocol data unit (PPDU) for transmission over a bonded channel, the bonded channel comprising the first 10 MHz channel and the second 10 MHz channel, where the PPDU is encoded to comprise a legacy preamble portion to be transmitted on the first 10 MHz channel and a repeated legacy preamble portion to be transmitted on the second 10 MHz channel, the PPDU further including a non-legacy portion, the non-legacy portion comprising a non-legacy signal field indicating a modulation and coding scheme (MCS) used to encode a data portion of the non-legacy portion, the data portion to be transmitted on the bonded channel.

公开(公告)号：US20190253984A1

公开(公告)日：2019-08-15

申请号：US16376798

申请日：2019-04-05

Applicant: Laurent Cariou ,  Po-Kai Huang ,  Necati Canpolat ,  Ehud Reshef

Inventor： Laurent Cariou ,  Po-Kai Huang ,  Necati Canpolat ,  Ehud Reshef

IPC: H04W52/36

CPC classification number: H04W52/36 ,  H04W16/14 ,  H04W88/08

Abstract: Embodiments of a high efficiency (HE) access point (HE AP) and HE station (HE STA) are generally described herein. The HE AP may transmit a frame that includes a transmit power envelope element to indicate local maximum transmit power constraints for an operating bandwidth of the HE AP on a per-segment basis. The operating bandwidth may be configurable for division into segments of a configurable segment size. The transmit power envelope element may include: a transmit power information field that includes: a local maximum transmit power count subfield that indicates the operating bandwidth, and a segment size subfield that indicates the segment size; and for each of the segments, a local maximum transmit power per segment field that indicates a local maximum transmit power for the segment.