公开(公告)号：US09131472B2

公开(公告)日：2015-09-08

申请号：US13894257

申请日：2013-05-14

Applicant: FutureWei Technologies, Inc.

Inventor： Ho-Ting Cheng ,  Osama Aboul-Magd ,  Sheng Sun ,  Junghoon Suh ,  Ngoc-Dung Dao ,  Alex Stephenne

IPC: H04W74/02 ,  H04W28/26 ,  H04W72/04 ,  H04W74/04 ,  H04W74/08 ,  H04W84/12 ,  H04W36/14

CPC classification number: H04W74/02 ,  H04W28/26 ,  H04W36/14 ,  H04W72/0446 ,  H04W74/04 ,  H04W74/08 ,  H04W84/12

Abstract: System and method embodiments are provided for provisioning a quality of cellular user experience (QoE) or quality of service (QoS) specified device in a wireless local area network (LAN). The embodiments enable a QoE or QoS specified by a service agreement for a device to be maintained during periods when the device is transmitting data to and receiving data from the wireless LAN (e.g., a WiFi hotspot). In an embodiment, a method includes determining that at least one QoS-sensitive device is communicating with a wireless LAN access point (AP), reserving a contention free period (CFP) in a superframe for the at least one QoS-sensitive device to communicate with the AP, and allocating a contention period (CP) in the superframe for non-QoS-sensitive devices to communicate with the AP, wherein the non-QoS-sensitive devices are prohibited from transmitting during the CFP.

Abstract translation: 系统和方法实施例被提供用于在无线局域网（LAN）中提供指定设备的蜂窝用户体验（QoE）或服务质量（QoS）的质量。 这些实施例使得在设备正在向无线LAN（例如，WiFi热点）发送数据和从无线LAN接收数据的时段期间维持由服务协议指定的用于设备的QoE或QoS。 在一个实施例中，一种方法包括确定至少一个QoS敏感设备正在与无线LAN接入点（AP）通信，在至少一个QoS敏感设备的超帧中保留无争用时段（CFP）以进行通信 并且在非QoS敏感设备的超帧中分配竞争时段（CP）以与AP通信，其中在CFP期间禁止非QoS敏感设备发送。

公开(公告)号：US20150131756A1

公开(公告)日：2015-05-14

申请号：US14538087

申请日：2014-11-11

Applicant: Futurewei Technologies, Inc.

Inventor： Junghoon Suh ,  Peiying Zhu ,  Osama Aboul-Magd ,  Kwok Shum Au ,  Sheng Sun

IPC: H04L27/26

CPC classification number: H04L27/2602 ,  H04L27/0012 ,  H04L27/2604 ,  H04L27/2613 ,  H04L27/2628

Abstract: System and method embodiments are provided for high efficiency wireless communications. In an embodiment, a method in a network component for transmitting a frame of two different fast Fourier transform (FFT) sizes includes generating a frame, wherein the frame comprises orthogonal frequency-division multiplexing (OFDM) symbols in two different FFT sizes, wherein the frame comprises a first portion and a second portion, wherein the first portion comprises a first FFT size and the second portion comprises a second FFT size; and transmitting the frame during a single transmission opportunity.

Abstract translation: 提供了用于高效无线通信的系统和方法实施例。 在一个实施例中，用于发送两个不同快速傅里叶变换（FFT）大小的帧的网络组件中的方法包括生成帧，其中该帧包括两种不同FFT大小的正交频分复用（OFDM）符号，其中， 帧包括第一部分和第二部分，其中所述第一部分包括第一FFT大小，并且所述第二部分包括第二FFT大小; 并在单个发送机会期间发送该帧。

公开(公告)号：US20140328242A1

公开(公告)日：2014-11-06

申请号：US13888103

申请日：2013-05-06

Applicant: FUTUREWEI TECHNOLOGIES, INC.

Inventor： Wen Tong ,  Junghoon Suh ,  Osama Aboul-Magd ,  Kwok Shum Au

IPC: H04W72/00

CPC classification number: H04W48/00 ,  H04B7/0617 ,  H04B7/0619 ,  H04L1/18 ,  H04L25/03955 ,  H04W72/00

Abstract: Embodiments are provided to enable concurrent uplink transmissions from multiple Wi-Fi stations (STAs) to one or more access points (APs) using Interference Alignment (IA). In an embodiment, the STAs broadcast, to one or more APs, beamforming reports including channel estimation information for downlink. The one or more AP then performs channel estimation using the beamforming reports, and selects at least some of the STAs. The AP also computes beamforming information for IA of uplink transmissions between the selected STAs and sends, to the selected STAs, the beamforming information. The beamforming information is piggy-backed over downlink data packets to the selected STAs. Each selected STA then sends an uplink data frame concurrently with one or more other uplink data frames from one or more other selected STAs to the AP. The uplink data frames are configured for concurrent uplink transmissions according to the beamforming information for IA.

Abstract translation: 提供实施例以使得能够使用干扰对准（IA）从多个Wi-Fi站（STA）到一个或多个接入点（AP）的并行上行链路传输。 在一个实施例中，STA向一个或多个AP广播包括用于下行链路的信道估计信息的波束成形报告。 一个或多个AP然后使用波束成形报告来执行信道估计，并且选择STA中的至少一些。 AP还计算用于所选择的STA之间的上行链路传输的IA的波束成形信息，并向所选择的STA发送波束形成信息。 波束形成信息通过下行链路数据分组捎带到所选择的STA。 每个所选择的STA然后将一个或多个其它上行链路数据帧与一个或多个其他所选择的STA同时发送到AP。 根据IA的波束成形信息，将上行链路数据帧配置用于并行上行链路传输。

公开(公告)号：US20140119300A1

公开(公告)日：2014-05-01

申请号：US14064932

申请日：2013-10-28

Applicant: Futurewei Technologies, Inc.

Inventor： Osama Aboul-Magd ,  Junghoon Suh ,  Kwok Shum Au

IPC: H04L5/00

CPC classification number: H04L5/0057 ,  H04B7/024 ,  H04B7/0452 ,  H04J11/0053 ,  H04L5/0073 ,  H04W74/0808

Abstract: Embodiments are provided herein for implementing a user cooperation protocol for interference alignment (IA) in wireless local area network (WLAN) or a Wi-Fi hotspot. The embodiments allow collecting knowledge of the channels from user stations (STAs) and sending this information to the corresponding access points (APs) in the network. This information is then used by the APs to pre-code their signals such as to remove interfering signals to non-intended STAs. An AP transmits to the STAs a group identifier (GrpID) indicating an order of STAs for transmitting channel state information (CSI) and an AP index indicating an order of STA groups of the APs for transmitting the CSI. When a STA detects a CSI transmission from another STA preceding the STA in the order of transmission as indicated by the AP index and GrpID, the STA transmits its CSI.

Abstract translation: 本文提供了实现用于无线局域网（WLAN）或Wi-Fi热点中的干扰对准（IA）的用户协作协议。 这些实施例允许从用户站（STA）收集信道的知识并将该信息发送到网络中的相应接入点（AP）。 该信息随后被AP用于对其信号进行预编码，例如将干扰信号去除到非预期的STA。 AP向STA发送指示用于发送信道状态信息（CSI）的STA的订单的组标识符（GrpID）和指示用于发送CSI的AP的STA组的顺序的AP索引。 当STA按照AP索引和GrpID所指示的传输顺序从STA之间的另一STA检测到CSI传输时，STA发送其CSI。

公开(公告)号：US20160029227A1

公开(公告)日：2016-01-28

申请号：US14340175

申请日：2014-07-24

Applicant: Futurewei Technologies, Inc.

Inventor： Osama Aboul-Magd ,  Kwok Shum (Edward) Au ,  Junghoon Suh

IPC: H04W16/28 ,  H04L5/00

CPC classification number: H04W16/28 ,  H04L5/0035 ,  H04L5/0053 ,  H04L5/0055 ,  H04L5/0057 ,  H04W84/12 ,  H04W88/08 ,  H04W92/20

Abstract: Embodiments are provided for enabling a coordinated beamforming (CB) mechanism in WLAN scenarios. In an embodiment, an AP sends a Feedback Request (FBR) frame to each one of the STAs in the OBSSs. The OBSSs comprise the STAs and a plurality of APs including the AP. The AP then receives a feedback frame from each STA of the STAs that participate in the CB transmission. The feedback frame includes channel state information (CSI) of the STA. The CSI enables the sending AP of performing CB on downlink. In an embodiment, the AP receives an initiate CB frame from a second AP initiating a CB transmission, and then sends an ACK frame to the second AP before sending the FBR frame to each one of the STAs. The AP starts the CB transmission with each one of the other APs that participate in the CB transmission.

Abstract translation: 提供了实现以在WLAN场景中实现协调的波束成形（CB）机制。 在一个实施例中，AP向OBSS中的每个STA发送反馈请求（FBR）帧。 OBSS包括STA和包括AP的多个AP。 AP然后从参与CB传输的STA的每个STA接收反馈帧。 反馈帧包括STA的信道状态信息（CSI）。 CSI可以在下行链路上发送执行CB的AP。 在一个实施例中，AP从发起CB传输的第二AP接收起始CB帧，然后在向每个STA发送FBR帧之前向第二AP发送ACK帧。 AP通过参与CB传输的其他AP中的每一个启动CB传输。

公开(公告)号：US09071489B2

公开(公告)日：2015-06-30

申请号：US13660934

申请日：2012-10-25

Applicant: FutureWei Technologies, Inc.

Inventor： Junghoon Suh ,  Yunbo Li ,  Kwok Shum Au ,  Osama Aboul-Magd ,  Sheng Sun

IPC: H04L27/26 ,  H04W84/12 ,  H04B7/06 ,  H04L5/00

CPC classification number: H04W28/06 ,  H04B7/0617 ,  H04B7/0689 ,  H04L5/0048 ,  H04L5/0053 ,  H04L27/2613 ,  H04L69/22 ,  H04W84/12

Abstract: A method for transmitting a frame includes generating an omni portion of the frame, the omni portion including a non-beamformed long training field and a signal field, the non-beamformed long training field including channel estimation information used to decode the signal field, the non-beamformed long training field configured to be transmitted through one of multiple antennas and multiple streams. The method also includes generating a multi-stream portion of the frame, the multi-stream portion including a data field and a multi-stream long training field, the multi-stream long training field including station-specific decoding information for station-specific data in the data field. The method further includes applying a beamforming indicator to the signal field of the omni portion, and transmitting the frame.

Abstract translation: 用于发送帧的方法包括生成帧的全方位部分，全方位部分包括非波束形成的长训练场和信号场，非波束形成的长训练场包括用于解码信号场的信道估计信息， 非波束形成的长训练场被配置为通过多个天线和多个流中的一个发射。 该方法还包括生成帧的多流部分，多流部分包括数据字段和多流长训练字段，多​​流长训练字段包括用于站特定数据的站特定解码信息 在数据字段中。 该方法还包括将波束形成指示符应用于全方位部分的信号域，以及传送该帧。

公开(公告)号：US20150124894A1

公开(公告)日：2015-05-07

申请号：US14070233

申请日：2013-11-01

Applicant: FutureWei Technologies, Inc.

Inventor： Junghoon Suh ,  Jiayin Zhang

IPC: H04B7/04 ,  H04B7/02

CPC classification number: H04B7/0417 ,  H04B7/024 ,  H04B7/0658

Abstract: A method for providing channel feedback includes receiving a signal from a transmission point (TP), estimating channel parameters from the signal as received, mapping the estimated channel parameters to a trellis in accordance with a Trellis Coded Quantization (TCQ) scheme, and applying a Viterbi algorithm (VA) to the trellis to generate quantized channel parameters, the quantized channel parameters including a plurality of samples. The method also includes identifying samples of the estimated channel parameters associated with samples of quantized channel parameters having quantization errors above a predetermined threshold, generating indicators in accordance with the samples having the quantization error above the predetermined threshold, and transmitting, by the RP, the quantized channel parameters and the indicators to the

Abstract translation: 一种用于提供信道反馈的方法包括从传输点（TP）接收信号，从接收到的信号估计信道参数，根据网格编码量化（TCQ）方案将估计的信道参数映射到网格，以及应用 维特比算法（VA）到网格以生成量化的信道参数，量化的信道参数包括多个样本。 该方法还包括识别与具有高于预定阈值的量化误差的量化信道参数的样本相关联的估计信道参数的样本，根据具有高于预定阈值的量化误差的样本生成指示符，以及由RP发送 量化通道参数和指标

公开(公告)号：US20150023440A1

公开(公告)日：2015-01-22

申请号：US13947721

申请日：2013-07-22

Applicant: FutureWei Technologies, Inc.

Inventor： Junghoon Suh ,  Osama Aboul-Magd

IPC: H04B7/04 ,  H04L1/00

CPC classification number: H04B7/0417 ,  H04B7/0626 ,  H04B7/0663 ,  H04L1/0026 ,  H04L1/006 ,  H04L1/0073

Abstract: System and method embodiments are provided for Trellis Coded Quantization (TCQ) based channel feedback. The embodiments provide full channel state information with a short feedback size to a scheduler in order for the scheduler to apply advanced beamforming schemes, such as those designed in non-linear precoder methods. In an embodiment, a method in a station for providing channel feedback to a transmission point (TP) in a wireless system includes receiving a signal from the TP; estimating channel parameters for the signal; applying a TCQ scheme to the estimated channel parameters to map the channel estimate parameters to trellis codes; and transmitting full channel state information to the TP, wherein the full channel state information comprises output of a Viterbi algorithm (VA) corresponding to the trellis codes.

Abstract translation: 为基于网格编码量化（TCQ）的信道反馈提供了系统和方法实施例。 这些实施例向调度器提供具有短反馈大小的完整信道状态信息，以便调度器应用高级波束成形方案，例如以非线性预编码器方法设计的那些。 在一个实施例中，一种用于向无线系统中的传输点（TP）提供信道反馈的站中的方法包括从TP接收信号; 估计信号的信道参数; 将TCQ方案应用于估计的信道参数以将信道估计参数映射到网格码; 以及向所述TP发送全信道状态信息，其中所述全信道状态信息包括对应于所述格状码的维特比算法（VA）的输出。

公开(公告)号：US20130195167A1

公开(公告)日：2013-08-01

申请号：US13739949

申请日：2013-01-11

Applicant: FutureWei Technologies, Inc.

Inventor： Junghoon Suh ,  Kwok Shum Au ,  Osama Aboul-Magd ,  Tianyu Wu

IPC: H04L27/01

CPC classification number: A47D13/00 ,  A47D5/006 ,  A47D13/08 ,  A47D15/003 ,  A47L11/28 ,  H04L1/0054 ,  H04L1/0071 ,  H04L25/03286 ,  H04L27/01 ,  H04L27/2602

Abstract: Efficient decoding in IEEE 802.11ah networks can be achieved by transmitting the signal (SIG) preamble field without interleaving bits within the SIG field. This may allow channel equalization and decoding steps to be performed contemporaneously upon reception of the frame, which allows for the implementation of non-linear channel equalization techniques (e.g., maximum likelihood (ML) equalization, etc.

Abstract translation: IEEE 802.11ah网络中的有效解码可以通过在SIG字段内传输信号（SIG）前导字段而不交织比特来实现。 这可以允许信道均衡和解码步骤在接收到帧时同时执行，这允许执行非线性信道均衡技术（例如，最大似然（ML）均衡）等。

公开(公告)号：US20150341933A1

公开(公告)日：2015-11-26

申请号：US14299797

申请日：2014-06-09

Applicant: Futurewei Technologies, Inc.

Inventor： Osama Aboul-Magd ,  Kwok Shum Au ,  Junghoon Suh

IPC: H04W72/04 ,  H04W56/00

CPC classification number: H04W72/0453 ,  H04L5/0007 ,  H04L5/001 ,  H04L5/0044 ,  H04L5/0053 ,  H04L5/0091 ,  H04L5/0098 ,  H04W56/001 ,  H04W72/0446 ,  H04W84/12

Abstract: Embodiments are provided for implementing a control function in a Wireless Local Area Network (WLAN) for allocation of resources to multiple stations (STAs) to enable Orthogonal Frequency Division Multiple Access (OFDMA) communications. An embodiment method includes determining a plurality of transmission resources for OFDMA communications of a plurality of STAs in the WLAN. The determination includes allocating a plurality of subcarriers to the STAs. The method further includes signaling the determined transmission resources to the STAs. The signaling of the transmission resources is piggybacked on at least one of data and management frames, such as in a sub-header of a MAC frame, or is an explicit signaling, such as in one or more dedicated fields of a traffic specification information element. The transmission resources for OFDMA communications allow simultaneous transmissions of the STAs in the WLAN.

Abstract translation: 提供了用于在无线局域网（WLAN）中实现用于向多个站（STA）分配资源以实现正交频分多址（OFDMA）通信的控制功能的实施例。 一种实施方式包括确定用于WLAN中的多个STA的OFDMA通信的多个传输资源。 确定包括将多个子载波分配给STA。 所述方法还包括将确定的传输资源发送给STA。 传输资源的信令被背负在诸如在MAC帧的子报头中的数据和管理帧中的至少一个上，或者是明确的信令，诸如在业务规范信息元素的一个或多个专用字段中 。 用于OFDMA通信的传输资源允许WLAN中的STA的同时传输。