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    Method and apparatus for handover based on dynamic beamforming scheme
    3.
    发明授权
    Method and apparatus for handover based on dynamic beamforming scheme 有权
    基于动态波束成形方案的切换方法和装置

    公开(公告)号：US08116675B2

    公开(公告)日：2012-02-14

    申请号：US12056541

    申请日：2008-03-27

    申请人： Ji-hoon Lee ,  Su-myeon Kim ,  Jae-hoon Kim

    发明人： Ji-hoon Lee ,  Su-myeon Kim ,  Jae-hoon Kim

    IPC分类号： H04B7/185

    CPC分类号： H04W36/32

    摘要： A method and apparatus for handover based on a dynamic beamforming scheme, which is adapted to a mobile communication system including a mobile node and a base station, is provided. The apparatus includes a mobile profile information processor configured to process mobile profile information based on a location of the mobile node, and to generate a beamforming control signal according to the mobile profile information; a handover indication message processor configured to generate a first handover indication message incorporating the mobile profile information in preparation for a handover of the mobile node; a transceiver configured to transmit the first handover indication message; and a beamforming controller configured to control beamforming for transmission of the transceiver according to the beamforming control signal.

    摘要翻译： 提供了一种适用于包括移动节点和基站的移动通信系统的基于动态波束成形方案的切换方法和装置。 该装置包括：移动简档信息处理器，被配置为基于移动节点的位置处理移动简档信息，并根据移动简档信息生成波束成形控制信号; 切换指示消息处理器，被配置为生成包含移动简档信息的第一切换指示消息以准备移动节点的切换; 收发器，被配置为发送所述第一切换指示消息; 以及波束形成控制器，被配置为根据波束成形控制信号控制波束成形以发送收发信机。

    Network system for establishing path using redundancy degree and method thereof
    5.
    发明申请
    Network system for establishing path using redundancy degree and method thereof 有权
    用冗余度建立路径的网络系统及其方法

    公开(公告)号：US20050157697A1

    公开(公告)日：2005-07-21

    申请号：US11035895

    申请日：2005-01-18

    申请人： Ji-hoon Lee ,  Jung-ho Kim ,  Sun-shin An ,  Won-jong Noh

    发明人： Ji-hoon Lee ,  Jung-ho Kim ,  Sun-shin An ,  Won-jong Noh

    IPC分类号： H04L12/28 ,  H04J3/24 ,  H04L12/56

    CPC分类号： H04W40/28 ,  H04L45/128 ,  H04L45/302 ,  H04L45/36

    摘要： A method for establishing a path between nodes in a wireless network system. A source node broadcasts a route request (RREQ) packet for a destination node. A mobile node between the source node and the destination node, upon receiving the RREQ packet, appends a redundancy degree with respect to an adjacent node to the RREQ packet and broadcasts the RREQ packet. The destination node selects an optimal path by checking the redundancy degree received along each path when the RREQ packet is received along multiple paths, and the destination node establishes an optimal path to the source node by transmitting a route reply (RREP) packet along the optimal path. Accordingly, the path is established suitable for the quality of service of data to be transmitted and a lost path is promptly recoverable by reference to information stored at each mobile node identifying redundant paths available to the mobile node.

    摘要翻译： 一种用于在无线网络系统中的节点之间建立路径的方法。 源节点广播目的地节点的路由请求（RREQ）数据包。 在源节点和目的节点之间的移动节点在接收到RREQ分组后，将相邻节点的冗余度附加到RREQ分组并广播RREQ分组。 目的地节点通过检查在沿着多个路径接收到RREQ分组时沿着每个路径接收的冗余度来选择最优路径，并且目的地节点通过沿着最优路由发送路由应答（RREP）分组来建立到源节点的最佳路径 路径。 因此，建立适合于要发送的数据的服务质量的路径，并且可以通过参考存储在每个移动节点处的信息来迅速恢复丢失的路径，该信息标识可用于移动节点的冗余路径。

    Single mode optical fiber having multi-step core structure and method of fabricating the same
    6.
    发明授权
    Single mode optical fiber having multi-step core structure and method of fabricating the same 有权
    具有多级芯结构的单模光纤及其制造方法

    公开(公告)号：US06205279B1

    公开(公告)日：2001-03-20

    申请号：US09186628

    申请日：1998-11-06

    申请人： Jin-han Kim ,  Mun-hyun Do ,  Ji-hoon Lee

    发明人： Jin-han Kim ,  Mun-hyun Do ,  Ji-hoon Lee

    IPC分类号： G02B602

    CPC分类号： G02B6/02238 ,  G02B6/03638 ,  G02B6/03666

    摘要： An optical fiber having a multi-step core structure, and a method of fabricating the same, are provided. The optical fiber includes a central core having a predetermined radius a1 from an central axis and a refractive index n1, a first outer core having a radius a2 and a refractive index n2 smaller than the refractive index n1 and surrounding the central core, a second outer core having a radius a3 and a refractive index n3 smaller than the refractive index n2 and surrounding the first outer core, and a cladding having a radius a4 and a refractive index n0 smaller than the refractive index n3 and surrounding the second outer core, i.e., a1 n2>n3>n0. The diameter of the core is increased by making the refractive index distribution of the core multi-stepped, thus providing easy fabrication. The optical fiber has a low dispersion value in a 1550 nm wavelength, thus making superspeed long distance transmission possible.

    摘要翻译： 提供具有多级芯结构的光纤及其制造方法。 光纤包括具有中心轴的预定半径a1和折射率n1的中心纤芯，第一外芯具有半径a2，折射率n2小于折射率n1并围绕中心芯，第二外芯 芯部具有半径a3，折射率n3小于折射率n2并围绕第一外芯，以及包层，其具有半径a4，折射率n0小于折射率n3并围绕第二外芯，即， a1 n2> n3> n0。 芯的直径通过使芯的折射率分布多级增加，从而提供容易的制造。 光纤在1550nm波长处具有低色散值，从而使得超高距离传输成为可能。

    Communication system and method capable of improving data transmission efficiency of TCP in asymmetric network environments
    8.
    发明授权
    Communication system and method capable of improving data transmission efficiency of TCP in asymmetric network environments 有权
    能够提高非对称网络环境下TCP数据传输效率的通信系统和方法

    公开(公告)号：US07898946B2

    公开(公告)日：2011-03-01

    申请号：US10718692

    申请日：2003-11-24

    申请人： Ji-hoon Lee ,  Ki-soo Chang

    发明人： Ji-hoon Lee ,  Ki-soo Chang

    IPC分类号： H04J1/16

    CPC分类号： H04L47/29 ,  H04L47/12 ,  H04L49/90 ,  H04L69/16 ,  H04L69/165 ,  H04L69/168

    摘要： A communication system capable of improving a TCP transmission efficiency includes a transmitter for transmitting data packets; a receiver connected to the transmitter, and for receiving the data packets and transmitting to the transmitter response signals with respect to the received data packets; and a multiplexer for multiplexing and transmitting to the transmitter the response signals transmitted from the receiver, and transmitting the transmitted data packets from the transmitter to a corresponding receiver, the multiplexer provided with a queue status monitor for monitoring queue statuses of the transmitted data packets and/or response signals, and a congestion control adjuster instructing the receiver to hold or compress the response signals based on the monitored queue status. Accordingly, the communication system can carry out efficient TCP congestion control by reducing a load of the TCP congestion control of the transmitters and receivers.

    摘要翻译： 能够提高TCP传输效率的通信系统包括用于发送数据分组的发射机; 连接到发射机的接收机，用于接收数据分组并向发射机发送关于接收到的数据分组的响应信号; 以及多路复用器，用于将从接收机发送的响应信号复用并发送给发射机，并将所发送的数据分组从发射机发射到对应的接收机，多路复用器配置有队列状态监视器，用于监视所发送的数据分组的队列状态， /或响应信号，以及拥塞控制调整器，其指示接收器基于所监视的队列状态来保持或压缩响应信号。 因此，通信系统可以通过减少发射机和接收机的TCP拥塞控制的负担来执行有效的TCP拥塞控制。

    SERVER, TERMINAL, AND METHOD FOR SUPPORTING MOBILITY
    9.
    发明申请
    SERVER, TERMINAL, AND METHOD FOR SUPPORTING MOBILITY 有权
    终端和支持移动性的方法

    公开(公告)号：US20090225674A1

    公开(公告)日：2009-09-10

    申请号：US12207381

    申请日：2008-09-09

    申请人： Jae-hoon Kim ,  Ji-hoon Lee

    发明人： Jae-hoon Kim ,  Ji-hoon Lee

    IPC分类号： H04J3/14

    CPC分类号： H04L45/00 ,  H04L45/54 ,  H04L61/1582 ,  H04L61/2076 ,  H04L61/2084 ,  H04W4/02 ,  H04W40/248

    摘要： A server, terminal, and method for supporting mobility in a network are provided. A server includes a storage which stores a double chord lookup table including server search information based on identifiers and location information of terminals on a network, a controller which finds a server for providing an optimal routing path between a receiving terminal and a transmitting terminal for sending a packet to the receiving terminal, using the double chord lookup table, where a trigger including an identifier and location information for identifying the receiving terminal is received from the receiving terminal, and a communicator which reports the location of the found server to the receiving terminal and the transmitting terminal.

    摘要翻译： 提供了一种用于支持网络中的移动性的服务器，终端和方法。 服务器包括：存储器，其存储双弦和查找表，其包括基于网络上的终端的标识符和位置信息的服务器搜索信息;寻找服务器以在接收终端和发送终端之间提供最佳路由路径以发送的控制器 使用双和弦查找表，从接收终端接收包括用于识别接收终端的标识符和位置信息的触发的接收终端的分组，以及将所发现的服务器的位置报告给接收终端的通信器 和发送终端。

    METHOD AND APPARATUS FOR HANDOVER BASED ON DYNAMIC BEAMFORMING SCHEME
    10.
    发明申请
    METHOD AND APPARATUS FOR HANDOVER BASED ON DYNAMIC BEAMFORMING SCHEME 有权
    基于动态波束方案的切换方法与装置

    公开(公告)号：US20090111469A1

    公开(公告)日：2009-04-30

    申请号：US12056541

    申请日：2008-03-27

    申请人： Ji-hoon Lee ,  Su-myeon Kim ,  Jae-hoon Kim

    发明人： Ji-hoon Lee ,  Su-myeon Kim ,  Jae-hoon Kim

    IPC分类号： H04Q7/20

    CPC分类号： H04W36/32

    摘要： A method and apparatus for handover based on a dynamic beamforming scheme, which is adapted to a mobile communication system including a mobile node and a base station, is provided. The apparatus includes a mobile profile information processor configured to process mobile profile information based on a location of the mobile node, and to generate a beamforming control signal according to the mobile profile information; a handover indication message processor configured to generate a first handover indication message incorporating the mobile profile information in preparation for a handover of the mobile node; a transceiver configured to transmit the first handover indication message; and a beamforming controller configured to control beamforming for transmission of the transceiver according to the beamforming control signal.

    摘要翻译： 提供了一种适用于包括移动节点和基站的移动通信系统的基于动态波束成形方案的切换方法和装置。 该装置包括：移动简档信息处理器，被配置为基于移动节点的位置处理移动简档信息，并根据移动简档信息生成波束成形控制信号; 切换指示消息处理器，被配置为生成包含移动简档信息的第一切换指示消息以准备移动节点的切换; 收发器，被配置为发送所述第一切换指示消息; 以及波束形成控制器，被配置为根据波束成形控制信号控制波束成形以发送收发信机。