Forward discrete/inverse-discrete Fourier transform device and method for optical OFDM communication and transmitting and receiving apparatus comprising the device
    1.
    发明授权
    Forward discrete/inverse-discrete Fourier transform device and method for optical OFDM communication and transmitting and receiving apparatus comprising the device 有权
    用于光OFDM通信的前向离散/反离散傅立叶变换设备和方法以及包括该设备的发送和接收设备

    公开(公告)号:US08155529B2

    公开(公告)日:2012-04-10

    申请号:US12347162

    申请日:2008-12-31

    IPC分类号: H04B10/00

    摘要: Disclosed are a forward discrete/inverse-discrete Fourier transform device and method for optical orthogonal frequency division multiplexing (OFDM) communication and a transmitting and receiving apparatus. The forward inverse-discrete Fourier transform device includes N 1:N splitters for splitting subcarrier signals received from N inputs corresponding to the number of optical frequencies of subcarriers, a phase shift delay array module for shifting phases of the split signals from the 1:N splitters, N N:1 power couplers for coupling signals output from the phase shift delay array module, a time delay array module for performing time delay on optical OFDM symbols from the N:1 power couplers, and an N:1 power coupler for coupling signals output from the time delay array module.

    摘要翻译: 公开了一种用于光学正交频分复用(OFDM)通信和发送和接收设备的前向离散/逆离散傅里叶变换设备和方法。 前向逆离散付里叶变换装置包括N 1:N个分离器,用于分割从N个输入接收到的与副载波的光频数相对应的子载波信号;相移延迟阵列模块,用于从1:N移位分离信号的相位 分流器,NN:1个用于耦合从相移延迟阵列模块输出的信号的功率耦合器,用于对来自N:1个功率耦合器的光OFDM符号执行时间延迟的延时阵列模块,以及用于耦合信号的N:1功率耦合器 从时间延迟阵列模块输出。

    Forward discrete/inverse-discrete Fourier transform device and method for optical OFDM communication and transmitting and receiving apparatus comprising the device
    2.
    发明授权
    Forward discrete/inverse-discrete Fourier transform device and method for optical OFDM communication and transmitting and receiving apparatus comprising the device 有权
    用于光OFDM通信的前向离散/反离散傅立叶变换设备和方法以及包括该设备的发送和接收设备

    公开(公告)号:US09002209B2

    公开(公告)日:2015-04-07

    申请号:US13413413

    申请日:2012-03-06

    摘要: Disclosed are a forward discrete/inverse-discrete Fourier transform device and method for optical orthogonal frequency division multiplexing (OFDM) communication and a transmitting and receiving apparatus. The forward inverse-discrete Fourier transform device includes N 1:N splitters for splitting subcarrier signals received from N inputs corresponding to the number of optical frequencies of subcarriers, a phase shift delay array module for shifting phases of the split signals from the 1:N splitters, N N:1 power couplers for coupling signals output from the phase shift delay array module, a time delay array module for performing time delay on optical OFDM symbols from the N:1 power couplers, and an N:1 power coupler for coupling signals output from the time delay array module.

    摘要翻译: 公开了一种用于光学正交频分复用(OFDM)通信和发送和接收设备的前向离散/逆离散傅里叶变换设备和方法。 前向逆离散付里叶变换装置包括N 1:N个分离器,用于分割从N个输入接收到的与副载波的光频数相对应的子载波信号;相移延迟阵列模块,用于从1:N移位分离信号的相位 分流器,NN:1个用于耦合从相移延迟阵列模块输出的信号的功率耦合器,用于对来自N:1个功率耦合器的光OFDM符号执行时间延迟的延时阵列模块,以及用于耦合信号的N:1功率耦合器 从时间延迟阵列模块输出。

    Forward Discrete/Inverse-Discrete Fourier Transform Device and Method for Optical OFDM Communication and Transmitting and Receiving Apparatus Comprising the Device
    3.
    发明申请
    Forward Discrete/Inverse-Discrete Fourier Transform Device and Method for Optical OFDM Communication and Transmitting and Receiving Apparatus Comprising the Device 有权
    前向离散/逆离散傅立叶变换装置及包括装置的光OFDM通信和发送和接收装置的方法

    公开(公告)号:US20120163824A1

    公开(公告)日:2012-06-28

    申请号:US13413413

    申请日:2012-03-06

    IPC分类号: H04J14/02 H04J11/00

    摘要: Disclosed are a forward discrete/inverse-discrete Fourier transform device and method for optical orthogonal frequency division multiplexing (OFDM) communication and a transmitting and receiving apparatus. The forward inverse-discrete Fourier transform device includes N 1:N splitters for splitting subcarrier signals received from N inputs corresponding to the number of optical frequencies of subcarriers, a phase shift delay array module for shifting phases of the split signals from the 1:N splitters, N N:1 power couplers for coupling signals output from the phase shift delay array module, a time delay array module for performing time delay on optical OFDM symbols from the N:1 power couplers, and an N:1 power coupler for coupling signals output from the time delay array module.

    摘要翻译: 公开了一种用于光学正交频分复用(OFDM)通信和发送和接收设备的前向离散/逆离散傅里叶变换设备和方法。 前向逆离散付里叶变换装置包括N 1:N个分离器,用于分割从N个输入接收到的与副载波的光频数相对应的子载波信号;相移延迟阵列模块,用于从1:N移位分离信号的相位 分流器,NN:1个用于耦合从相移延迟阵列模块输出的信号的功率耦合器,用于对来自N:1个功率耦合器的光OFDM符号执行时间延迟的延时阵列模块,以及用于耦合信号的N:1功率耦合器 从时间延迟阵列模块输出。

    Forward Discrete/Inverse-Discrete Fourier Transform Device and Method for Optical OFDM Communication and Transmitting and Receiving Apparatus Comprising the Device
    4.
    发明申请
    Forward Discrete/Inverse-Discrete Fourier Transform Device and Method for Optical OFDM Communication and Transmitting and Receiving Apparatus Comprising the Device 有权
    前向离散/逆离散傅立叶变换装置及包括装置的光OFDM通信和发送和接收装置的方法

    公开(公告)号:US20090180778A1

    公开(公告)日:2009-07-16

    申请号:US12347162

    申请日:2008-12-31

    IPC分类号: H04J14/00 H04J11/00

    摘要: Disclosed are a forward discrete/inverse-discrete Fourier transform device and method for optical orthogonal frequency division multiplexing (OFDM) communication and a transmitting and receiving apparatus.The forward inverse-discrete Fourier transform device includes N 1:N splitters for splitting subcarrier signals received from N inputs corresponding to the number of optical frequencies of subcarriers, a phase shift delay array module for shifting phases of the split signals from the 1:N splitters, N N:1 power couplers for coupling signals output from the phase shift delay array module, a time delay array module for performing time delay on optical OFDM symbols from the N:1 power couplers, and an N:1 power coupler for coupling signals output from the time delay array module.

    摘要翻译: 公开了一种用于光学正交频分复用(OFDM)通信和发送和接收设备的前向离散/逆离散傅立叶变换设备和方法。正向离散傅里叶变换设备包括用于分离接收的子载波信号的N 1:N个分离器 来自与子载波的光频数对应的N个输入;相移延迟阵列模块,用于移位来自1:N分路器的分离信号的相位; NN:1个用于从相移延迟阵列模块输出的耦合信号的功率耦合器; 用于对来自N:1个功率耦合器的光学OFDM符号执行时间延迟的时间延迟阵列模块和用于耦合从时间延迟阵列模块输出的信号的N:1功率耦合器。

    METHOD AND APPARATUS FOR MULTICAST TRANSMISSION IN WIRELESS NETWORK
    5.
    发明申请
    METHOD AND APPARATUS FOR MULTICAST TRANSMISSION IN WIRELESS NETWORK 失效
    无线网络中多播传输的方法与装置

    公开(公告)号:US20100226243A1

    公开(公告)日:2010-09-09

    申请号:US12717534

    申请日:2010-03-04

    IPC分类号: H04W28/04

    摘要: The present invention provides a method and apparatus for multicast transmission of a transmitting station in a wireless network. The method according to the present invention transmits a plurality of data packets to a plurality of receiving stations, receives information on loss of the plurality of the data packets from at least one of the plurality of the receiving stations, codes the plurality of the data packets into a single coded data packet based on the information on the loss of the plurality of the data packets and transmits an error control frame including the coded data packet to the plurality of the receiving stations. Therefore, when an error occurs at a data packet that a transmitting station transmits to a plurality of receiving stations by a multicast transmission, a number of retransmission of the data packet can be reduced.

    摘要翻译: 本发明提供了一种用于无线网络中的发射台的组播传输的方法和装置。 根据本发明的方法将多个数据分组发送到多个接收站,从多个接收站中的至少一个接收关于多个数据分组丢失的信息,对多个数据分组进行编码 基于关于多个数据分组的丢失的信息将其转换为单个编码数据分组,并将包括编码数据分组的错误控制帧发送到多个接收站。 因此,当发送站通过多播传输向多个接收站发送的数据分组发生错误时,可以减少数据分组的重传次数。

    Method of creating address forwarding table in ethernet ring network
    6.
    发明申请
    Method of creating address forwarding table in ethernet ring network 审中-公开
    以太网环网中创建地址转发表的方法

    公开(公告)号:US20080317030A1

    公开(公告)日:2008-12-25

    申请号:US12009819

    申请日:2008-01-22

    IPC分类号: H04L12/28

    CPC分类号: H04L12/427

    摘要: Provided is a method of creating an address forwarding table in an Ethernet ring network. The method includes the steps of: broadcasting, at each Ethernet node, a ring learning frame having information for measuring cost in the frame's payload in both directions; and receiving, at each Ethernet node, two ring learning frames transferred from different Ethernet nodes and recording a ring learning frame containing information having the minimum cost in the Ethernet node's address forwarding table. Accordingly, by creating an intelligent address forwarding table, it is possible to efficiently prevent a loop without conventionally using a closed loop, and to rapidly transfer a frame through an optimal path.

    摘要翻译: 提供了一种在以太环网中创建地址转发表的方法。 该方法包括以下步骤:在每个以太网节点处广播具有用于在两个方向上测量帧有效载荷中的成本的信息的环学习帧; 并且在每个以太网节点处接收从不同以太网节点传送的两个环学习帧,并且在以太网节点的地址转发表中记录包含具有最小成本的信息的环学习帧。 因此,通过创建智能地址转发表,可以有效地防止循环而不常规地使用闭环,并且通过最佳路径快速传送帧。

    Apparatus and method for transferring optical data in optical switching system
    7.
    发明申请
    Apparatus and method for transferring optical data in optical switching system 审中-公开
    光交换系统中传输光数据的装置和方法

    公开(公告)号:US20070242691A1

    公开(公告)日:2007-10-18

    申请号:US11651203

    申请日:2007-01-09

    IPC分类号: H04J3/22

    摘要: An apparatus and method for transferring optical data in an optical switching system are provided. When optical data input to a node are in contention, the optical data are converted from optical signals to electrical signals and temporarily stored. When an output resource is available, the stored optical data are converted to the available output resource and transmitted to a desired destination node. This overcomes the buffering depth limit that is observed when a conventional optical fiber delay line is used. Accordingly, an optical data loss rate can be reduced such that optical data can be efficiently transferred. Further, non-contending optical data are directly delivered to output resource by the switching unit, thereby reducing the cost of optical/electrical conversion and wavelength conversion and enabling the apparatus to be implemented at low cost.

    摘要翻译: 提供了一种用于在光交换系统中传送光数据的装置和方法。 当输入到节点的光数据处于竞争状态时,光数据从光信号转换为电信号并暂时存储。 当输出资源可用时,存储的光学数据被转换为可用的输出资源并被发送到期望的目的地节点。 这克服了当使用常规光纤延迟线时观察到的缓冲深度限制。 因此,可以减少光学数据丢失率,从而可以有效地传送光学数据。 此外,非竞争光学数据由切换单元直接传送到输出资源,从而降低了光/电转换和波长转换的成本,并使得该装置能够以低成本实现。

    Wireless mesh network system, virtual node generating method, thereof, unicast packet routing method, and scheduling method thereof
    8.
    发明授权
    Wireless mesh network system, virtual node generating method, thereof, unicast packet routing method, and scheduling method thereof 有权
    无线网状网络系统,虚拟节点生成方法,单播分组路由方法及其调度方法

    公开(公告)号:US08509064B2

    公开(公告)日:2013-08-13

    申请号:US12849486

    申请日:2010-08-03

    IPC分类号: G01R31/08

    摘要: A wireless mesh network system generates at least one virtual node within a transmission area of a specific mesh node when no mesh nodes exist in two or three continuous quadrants within the transmission area with reference to the specific mesh node. Also, the system performs routing by combining uplink and downlink routing methods so as to support unicast between the mesh nodes in a domain. Further, a channel access order of the mesh nodes is determined based on the potential values allocated to the mesh nodes forming the wireless mesh network according to the field theory. In this instance, the channel access order can be established by a central control method by a central processor for controlling the wireless mesh network or a distributed control method using contention per mesh node.

    摘要翻译: 无线网状网络系统在参考特定网状节点的传输区域内的两个或三个连续象限中不存在网格节点时,在特定网格节点的传输区域内生成至少一个虚拟节点。 此外,系统通过组合上行链路和下行链路路由方法来执行路由,以支持域中的网状节点之间的单播。 此外,根据场理论,基于分配给形成无线网状网络的网格节点的潜在值来确定网格节点的信道接入顺序。 在这种情况下,信道访问顺序可以由中央处理器的中央控制方法建立,用于控制无线网状网络,或者使用每个网格节点争用的分布式控制方法。

    Packet switching system and method
    9.
    发明授权
    Packet switching system and method 有权
    分组交换系统和方法

    公开(公告)号:US08792514B2

    公开(公告)日:2014-07-29

    申请号:US13113444

    申请日:2011-05-23

    摘要: A packet switching system includes a plurality of switch fabrics connected in cascade and a plurality of buffers respectively connected to the plurality of switch fabrics. In the event of packet competition, the plurality of switch fabrics buffer the competing packets to the corresponding buffers through buffer connection ports, and forward the competing packets in excess of the number of buffer connection ports to an adjacent switch fabric through switch connection ports.

    摘要翻译: 分组交换系统包括级联连接的多个交换结构和分别连接到多个交换结构的多个缓冲器。 在分组竞争的情况下,多个交换结构通过缓冲器连接端口将竞争分组缓冲到相应的缓冲器,并通过交换机连接端口将超过缓冲区连接端口数量的竞争分组转发到相邻的交换机结构。

    Apparatus for Transferring Optical Data in Optical Switching System Using Time Synchronization
    10.
    发明申请
    Apparatus for Transferring Optical Data in Optical Switching System Using Time Synchronization 失效
    用于在光交换系统中使用时间同步传输光数据的装置

    公开(公告)号:US20100142942A1

    公开(公告)日:2010-06-10

    申请号:US12518765

    申请日:2007-02-08

    IPC分类号: H04B10/08

    摘要: Provided is an apparatus for transferring optical data in an optical switching system using time synchronization. The apparatus performs time synchronization on optical data to input the optical data at regular intervals through fiber delay line for time synchronization respectively disposed on input ports. Therefore, the apparatus can efficiently reduce a data blocking rate in comparison with a conventional optical switching system using an asynchronous electric buffer without a synchronous process, and achieve the same performance as conventional asynchronous technology despite using fewer wavelength converters and buffers, thus reducing system cost. In addition, using dynamic time synchronization modules, the apparatus performs time synchronization for minute time variation due to an environment such as temperature.

    摘要翻译: 提供了一种使用时间同步在光交换系统中传送光数据的装置。 该装置对光数据执行时间同步,以均匀的间隔通过光纤延迟线输入光学数据,用于分别设置在输入端口上的时间同步。 因此,与使用不具有同步处理的异步电动缓冲器的常规光开关系统相比,该装置可以有效地降低数据阻塞率,并且尽管使用较少的波长转换器和缓冲器,但是实现与传统异步技术相同的性能,从而降低系统成本 。 此外,使用动态时间同步模块,由于诸如温度的环境,该装置执行时间同步以进行微小的时间变化。