公开(公告)号：US08761766B2

公开(公告)日：2014-06-24

申请号：US12609069

申请日：2009-10-30

申请人： Jai-Hyung Cho ,  Hyunsuk Roh ,  Sang-Ho Lee

发明人： Jai-Hyung Cho ,  Hyunsuk Roh ,  Sang-Ho Lee

IPC分类号： H04W4/00 ,  H04W72/00

CPC分类号： G08G1/0104 ,  G08G1/096716 ,  G08G1/096741 ,  G08G1/096775 ,  H04W4/06

摘要： Provided are a method for transmitting and receiving broadcasting service information and a mobile station for a broadcasting service. The method for transmitting broadcasting service information at a base station, includes registering a mobile station in a first cell, wherein the first cell is a cell managed by the base station, receiving vehicle related information from the mobile station mounted on a vehicle, and broadcasting the received vehicle related information to target cells.

摘要翻译： 提供了一种用于发送和接收广播服务信息的方法和用于广播服务的移动台。 在基站发送广播业务信息的方法，包括在第一小区中登记移动台，其中，所述第一小区为由所述基站管理的小区，从安装在车辆上的移动台接收车辆相关信息，并广播 接收的车辆相关信息到目标小区。

公开(公告)号：US20080225770A1

公开(公告)日：2008-09-18

申请号：US11994733

申请日：2006-12-08

申请人： Jai-Hyung Cho ,  Sungsoo Kang

发明人： Jai-Hyung Cho ,  Sungsoo Kang

IPC分类号： H04J15/00

CPC分类号： H04W76/15 ,  H04L12/189

摘要： A method and a system for transmitting and receiving Ethernet data to/from a mobile terminal supporting high speed mobility are provided. The method includes: setting a wireless link between a specific access point among a plurality of wireless access points and the mobile terminal and registering identification information of the mobile terminal in the specific access point; allowing the specific access point to transmit an upward Ethernet frame received from the mobile terminal through the wireless link to the service node through the multicast tunnel connected to the specific access point; allowing the service node to recognize whether the mobile terminal is moving and to recognize a multicast tunnel address and identification information of the mobile terminal; allowing the service node to transmit the upward Ethernet frame to an external terminal, receive a downward Ethernet frame corresponding to a response to the upward Ethernet frame, and transmit the received downward Ethernet frame to the plurality of access points connected to the multicast tunnel; and allowing the specific access point, in which the identification information of the mobile terminal is registered, among the plurality of access points that receive the downward Ethernet frame to transmit the downward Ethernet frame to the mobile terminal. Accordingly, when the mobile terminal moves in a wireless LAN environment in which Ethernet data is transmitted and received to and from the mobile terminal, a soft hand-over in which service is not stopped and is stably maintained is provided.

摘要翻译： 提供了一种用于向/从支持高速移动性的移动终端发送和接收以太网数据的方法和系统。 该方法包括：在多个无线接入点中的特定接入点与移动终端之间设置无线链路，并在该特定接入点登记移动终端的识别信息; 允许特定接入点通过无线链路通过连接到特定接入点的组播隧道向服务节点发送从移动终端接收的向上的以太网帧; 允许服务节点识别移动终端是否移动，并识别移动终端的多播隧道地址和识别信息; 允许服务节点将上行以太网帧发送到外部终端，接收对应于上行以太网帧的响应的向下的以太网帧，并将接收到的下行以太网帧发送到连接到组播隧道的多个接入点; 并且在接收到向下的以太网帧的多个接入点之间允许其中注册了移动终端的识别信息的特定接入点将下行以太网帧发送到移动终端。 因此，当移动终端在向移动终端发送和接收以太网数据的无线LAN环境中移动时，提供了不停止并稳定地维护业务的软切换。

公开(公告)号：US20080107025A1

公开(公告)日：2008-05-08

申请号：US11718884

申请日：2005-05-16

申请人： Jai-Hyung Cho ,  Sung-Back Hong

发明人： Jai-Hyung Cho ,  Sung-Back Hong

IPC分类号： H04L1/00

CPC分类号： H04L41/0677 ,  H04L43/16

摘要： Provided is a switching device for detecting and removing a looping phenomenon in a data communication network and a method using the switching device. The method includes: detecting a frame checksum value; counting the number of times of a checksum value corresponding to the frame checksum value is received; and declaring a looping phenomenon when the number of times exceeds a predetermined threshold. The method makes it possible to easily detect a looping phenomenon using the checksum value.

摘要翻译： 提供了一种用于检测和去除数据通信网络中的循环现象的切换装置以及使用该切换装置的方法。 该方法包括：检测帧校验和值; 接收对应于帧校验和值的校验和值的次数的计数; 并且当次数超过预定阈值时声明循环现象。 该方法使得可以使用校验和值容易地检测循环现象。