公开(公告)号：WO2018204122A1

公开(公告)日：2018-11-08

申请号：PCT/US2018/028996

申请日：2018-04-24

Applicant: CISCO TECHNOLOGY, INC.

Inventor： KLOPER, David ,  HART, Brian, D. ,  SILVERMAN, Matthew, A. ,  STAGER, Paul, J.

IPC: H04L1/00

CPC classification number: H04W74/0816 ,  H04L1/0002 ,  H04L1/0007 ,  H04L2001/0092 ,  H04W74/004 ,  H04W74/006 ,  H04W88/085

Abstract: A central processor subsystem controls multiple transceivers. Each transceiver transmits protocol data units from antennas of that transceiver and produces receive waveforms from wirelessly received signals at the one or more antennas. A transmit waveform, including a frame addressed to one or more wireless client devices, is sent through a first transceiver to be transmitted wirelessly by the first transceiver on a frequency channel. A receive waveform, representative of the transmission by the first transceiver and wirelessly received at a second transceiver, is received from the second transceiver. While the transmit waveform is being sent to the first transceiver: a level of collision between the receive waveform and another transmission on the frequency channel is detected; and if the level of collision exceeds a threshold prior to an end of the receive waveform, the transmit waveform being sent to the first transceiver is modified to reduce the collision.

公开(公告)号：WO2021041175A1

公开(公告)日：2021-03-04

申请号：PCT/US2020/047306

申请日：2020-08-21

Applicant: CISCO TECHNOLOGY, INC.

Inventor： HART, Brian ,  KLOPER, David

IPC: H04L5/00 ,  H04L27/26

Abstract: Presented herein is a tone plan that can accommodate multiple bandwidth options. This tone plan may be designed around a fundamental tile, such as 20 MHz tile, that is replicated to 40 and 80 MHz (and 160 MHz and beyond). For wider bandwidths, the otherwise-unused guard tones between the 20 MHz tiles are filled by a new resource unit and DC tones. There are DC tones placed to support any client, for all defined and plausible future values of its current operating bandwidth and center frequency (i.e. any 20 MHz, any 40 MHz, any 80 MHz, 160 MHz and 80+80 MHz, 320, 160+80 etc.), as well as plausible future preamble puncturing cases.

公开(公告)号：WO2015026620A1

公开(公告)日：2015-02-26

申请号：PCT/US2014/051047

申请日：2014-08-14

Applicant: CISCO TECHNOLOGY, INC.

Inventor： RANGARAJAN, Raghuram ,  KLOPER, David ,  STAGER, Paul, J.

IPC: H03G3/30

CPC classification number: H04B7/0817 ,  H03G3/3078

Abstract: A set of receiver path circuits is allocated for processing a radio-frequency (RF) signal provided by receive antennas coupled to the receiver path circuits. The RF signal may belong to a first signal class, such as Wi-Fi. A first gain control signal is applied to each of the allocated receiver path circuits to condition a signal level of the RF signal for the first signal class. A second gain control signal is applied to another set of receiver path circuits coupled to the receive antennas to condition the RF signal of a second signal class. First receive gain control signals are generated from the RF signals of the first signal class by the allocated set of the receiver path circuits. The first receive gain control signals are configured to optimize the signal level for processing the first signal class. A second receive gain control signal is generated to optimize the signal level of the RF signal for the second signal class.

Abstract translation: 分配一组接收机路径电路来处理由耦合到接收机路径电路的接收天线提供的射频（RF）信号。 RF信号可以属于第一信号类，例如Wi-Fi。 对每个分配的接收机路径电路施加第一增益控制信号，以便调节第一信号类的RF信号的信号电平。 第二增益控制信号被施加到耦合到接收天线的另一组接收器路径电路以调节第二信号类的RF信号。 第一接收增益控制信号由所分配的一组接收机路径电路从第一信号类的RF信号产生。 第一接收增益控制信号被配置为优化用于处理第一信号类的信号电平。 生成第二接收增益控制信号以优化第二信号类的RF信号的信号电平。

公开(公告)号：WO2014039380A2

公开(公告)日：2014-03-13

申请号：PCT/US2013/057491

申请日：2013-08-30

Applicant: CISCO TECHNOLOGY, INC.

Inventor： HART, Brian, D. ,  CHAN, Douglas ,  KLOPER, David

IPC: H04W72/04 ,  H04W24/00

CPC classification number: H04W74/0808 ,  H04L5/00 ,  H04L27/0006 ,  H04W84/12

Abstract: Wider bandwidth transmissions are dynamically enabled in a wireless networking environment. During a transmit opportunity time interval for a wireless network device, a transmission is sent in a primary channel in a frequency band in which the primary channel and a secondary channel may be used simultaneously to send a wider bandwidth transmission. Activity is monitored in the secondary channel. A determination is made as to whether the secondary channel is free based on the monitoring. When it is determined that the secondary channel is free, the wider bandwidth transmission is sent in the primary and secondary channels.

Abstract translation: 在无线网络环境中动态启用更宽的带宽传输。 在无线网络设备的发送机会时间间隔期间，在主频道中的主信道中发送传输，其中可以同时使用主信道和辅信道以发送更宽带宽的传输。 在辅助通道中监视活动。 基于监视确定辅助信道是否空闲。 当确定辅助信道是空闲时，在主要和次要信道中发送较宽带宽传输。

公开(公告)号：WO2010002484A1

公开(公告)日：2010-01-07

申请号：PCT/US2009/037915

申请日：2009-03-23

Applicant: CISCO TECHNOLOGY, INC. ,  DIENER, Neil, R. ,  SUGAR, Gary, L. ,  HART, Brian, Donald ,  GUTKIN, Igal ,  KLOPER, David

Inventor： DIENER, Neil, R. ,  SUGAR, Gary, L. ,  HART, Brian, Donald ,  GUTKIN, Igal ,  KLOPER, David

IPC: H04W16/14 ,  H04W84/18

CPC classification number: H04W16/14 ,  H04W84/18

Abstract: At a plurality of first devices, wireless transmissions are received at different locations in a region where multiple target devices may be emitting. Identifier data associated with reception of emissions from target devices at multiple first devices is generated. Similar identifier data associated with received emissions at multiple first devices are grouped together into a cluster record that potentially represents the same target device detected by multiple first devices. Data is stored that represents a plurality of cluster records from identifier data associated with received emissions made over time by multiple first devices. The cluster records are analyzed over time to correlate detections of target devices across multiple first devices.

Abstract translation: 在多个第一设备中，在多个目标设备可能发射的区域中的不同位置处接收无线传输。 产生与在多个第一设备处的来自目标设备的发射的接收相关联的标识符数据。 与多个第一设备处的接收到的发射相关联的类似标识符数据被分组在一起成为可能表示由多个第一设备检测到的相同目标设备的集群记录。 存储表示来自与由多个第一设备随时间进行的接收到的发射相关联的标识符数据的多个集群记录的数据。 随着时间的推移分析集群记录，以便在多个第一个设备之间关联目标设备的检测。

公开(公告)号：WO2015009804A1

公开(公告)日：2015-01-22

申请号：PCT/US2014/046818

申请日：2014-07-16

Applicant: CISCO TECHNOLOGY, INC. ,  KLOPER, David ,  HSU, Julan ,  NARAYANAN, Hari ,  STAGER, Paul

Inventor： KLOPER, David ,  HSU, Julan ,  NARAYANAN, Hari ,  STAGER, Paul

IPC: H04W24/10

CPC classification number: H04W24/08 ,  H04W24/10

Abstract: In an example embodiment disclosed herein there is described a multi-radio device which comprises a first radio that first radio comprises a transmitter, and a second radio that second radio comprises a receiver that monitors a channel to obtain data representative of a predefined channel parameter. The second radio is operable to receive a signal from the first radio that indicates when the transmitter of the first radio is transmitting. The receiver of the second radio selectively excludes data representative of a predefined channel parameter based on whether the transmitter of the first radio is transmitting.

Abstract translation: 在本文公开的示例实施例中，描述了一种多无线电设备，其包括第一无线电，第一无线电包括发射机，第二无线电装置，第二无线电装置，其包括监视信道以获得代表预定信道参数的数据的接收机。 第二无线电装置可操作以从第一无线电接收信号，该信号指示第一无线电的发射机何时发射。 第二无线电的接收机基于第一无线电的发射机是否正在传输来选择性地排除表示预定信道参数的数据。

公开(公告)号：WO2012154465A1

公开(公告)日：2012-11-15

申请号：PCT/US2012/036099

申请日：2012-05-02

Applicant: CISCO TECHNOLOGY, INC. ,  RAGHURAM, Rangarajan ,  KLOPER, David ,  TESFAI, Yohannes

Inventor： RAGHURAM, Rangarajan ,  KLOPER, David ,  TESFAI, Yohannes

IPC: H04L1/00

CPC classification number: H04L1/0046 ,  H04L1/0072 ,  H04L1/0091

Abstract: Techniques are provided for receiving a transmitted first packet that was formatted using a known scrambling algorithm with an unknown scrambling seed. An encoded packet payload is extracted from the first packet header. The encoded packet payload header is decoded to obtain a first scrambled packet payload header. For each potential value of the unknown seed, the first scrambled packet payload header is descrambled to produce a first set of descrambled packet payload headers and for each potential value of initial register values associated with a cyclic redundancy check, the cyclic redundancy check is executed comprising polynomial division on each of the descrambled packet payload headers such that when the polynomial division results in a zero remainder, a potential unscrambled payload header for the first packet is obtained. Information about the first packet is obtained from the potential unscrambled payload header.

Abstract translation: 提供了用于接收使用具有未知加扰种子的已知加扰算法格式化的所发送的第一分组的技术。 从第一分组报头中提取编码分组有效载荷。 编码分组有效载荷头部被解码以获得第一加扰分组有效载荷头部。 对于未知种子的每个潜在值，第一加扰分组有效载荷报头被解扰以产生第一组解扰分组有效载荷报头，并且对于与循环冗余校验相关联的初始寄存器值的每个潜在值，执行循环冗余校验，包括 每个解扰分组有效载荷头部上的多项式除法使得当多项式除法导致零余数时，获得用于第一分组的潜在未加扰的有效负载报头。 关于第一分组的信息是从潜在的未加扰的有效负载报头获得的。

公开(公告)号：WO2020014110A1

公开(公告)日：2020-01-16

申请号：PCT/US2019/040781

申请日：2019-07-08

Applicant: CISCO TECHNOLOGY, INC.

Inventor： CIZDZIEL, Benjamin ,  HART, Brian, D. ,  MONAJEMI, Pooya ,  KLOPER, David

IPC: H04W16/14

Abstract: Bypassing radar in wide Dynamic Frequency Selection (DFS) channels utilizing puncturing may be provided. A first client device may be classified as eligible for puncturing and a second client device may be classified as not eligible for puncturing. Next, it may be determined that a subchannel in a bandwidth range should not be used. Then, in response to determining that the subchannel in the bandwidth range should not be used, the first client device may be steered to a first subset of the bandwidth range and the second client device may be steered to a second subset of the bandwidth range. The second subset of the bandwidth range may be smaller than the first subset of the bandwidth range.

公开(公告)号：WO2019094248A1

公开(公告)日：2019-05-16

申请号：PCT/US2018/058643

申请日：2018-11-01

Applicant: CISCO TECHNOLOGY, INC.

Inventor： SILVERMAN, Matthew, A. ,  CHAVEZ, Oscar, Bejarano ,  STAGER, Paul, J. ,  KLOPER, David

IPC: H04B7/00

Abstract: Techniques are presented herein for computing angle-of-arrival estimates while switching antenna states during a packet unit for the general Orthogonal Frequency Division Multiple Access (OFMDA) case (including a single user). A wireless device computes channel estimates throughout the entire frame and not only during the training symbols. Consequently, the wireless device computes channel estimates for all antennas in its array within a single frame instead of having to wait for multiple frames.

公开(公告)号：WO2014179150A2

公开(公告)日：2014-11-06

申请号：PCT/US2014/035343

申请日：2014-04-24

Applicant: CISCO TECHNOLOGY, INC.

Inventor： HART, Brian, Donald ,  STAGER, Paul, J. ,  PANDEY, Santosh ,  KLOPER, David ,  LYONS, Dan ,  SILVERMAN, Matthew, A.

CPC classification number: G01S3/38 ,  G01S1/68 ,  G01S3/48 ,  H04W64/006

Abstract: In one embodiment, an apparatus includes a plurality of antennas, a receiver in communication with said plurality of antennas for receiving one or more packets in a block based modulation environment, a switch interposed between a portion of the antennas and the receiver for switching between the antennas, and a processor for calculating angle of arrival for use in identifying a location of a mobile device transmitting the one or more packets.

Abstract translation: 在一个实施例中，一种装置包括多个天线，与所述多个天线通信的接收机，用于在基于块的调制环境中接收一个或多个分组，插入在天线的一部分和接收机之间的切换，用于在 天线和用于计算到达角的处理器，用于识别发送一个或多个分组的移动设备的位置。