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    Roaming method between wireless local area network and cellular network
    1.
    发明授权
    Roaming method between wireless local area network and cellular network 有权
    无线局域网与蜂窝网络之间的漫游方法

    公开(公告)号：US07519363B2

    公开(公告)日：2009-04-14

    申请号：US10512791

    申请日：2002-11-29

    申请人： Yong-Sik Shin ,  Si-Hoon Ryu ,  Dong-Hahk Lee

    发明人： Yong-Sik Shin ,  Si-Hoon Ryu ,  Dong-Hahk Lee

    IPC分类号： H04Q7/20

    CPC分类号： H04W8/12 ,  H04L29/06 ,  H04W80/04 ,  H04W88/005

    摘要： The present invention relates to a roaming method between a WLAN and a cellular network which can interwork the WLAN and the cellular network on the basis of a mobile IP system for smooth roaming. In data communication in the WLAN and/or the cellular network using the mobile IP system, the roaming method between the WLAN and the cellular network includes a step wherein a packet data serving node of the cellular network which recognizes allocation of an IP address to a specific mobile terminal notifies information on a current access state of the mobile terminal to an access point managing means of the WLAN located in a current service area of the mobile terminal, a step wherein the access point managing means which the mobile terminal newly accesses requests address renewal to replace an address of the packet data serving node by its address, allocates an IP address to the mobile terminal according to the renewal result, and notifies it to the packet data serving node, and a step wherein the packet data serving node which receives the notification message from the access point managing means transmits data obtained during the roaming due to the movement to the access point managing node, whereby the roaming is performed from the cellular network to the WLAN. In the same manner, the roaming can be performed from the WLAN to the cellular network.

    摘要翻译： 本发明涉及WLAN和蜂窝网络之间的漫游方法，其可以基于用于平滑漫游的移动IP系统来互通WLAN和蜂窝网络。 在使用移动IP系统的WLAN和/或蜂窝网络的数据通信中，WLAN与蜂窝网络之间的漫游方法包括以下步骤：蜂窝网络的分组数据服务节点识别IP地址的分配 特定移动终端向移动终端的当前服务区域中的WLAN的接入点管理装置通知移动终端的当前接入状态的信息，其中，移动终端新接入请求地址的接入点管理装置 更新以通过其地址替换分组数据服务节点的地址，根据更新结果向移动终端分配IP地址，并将其通知给分组数据服务节点，以及其中接收到的分组数据服务节点 来自接入点管理装置的通知消息将由于移动而在漫游期间获得的数据发送到接入点管理装置 从而从蜂窝网络到WLAN进行漫游。 以相同的方式，可以从WLAN到蜂窝网络执行漫游。

    Method of Switching Multi-Mode Multi-Ban Mobile Communication Terminal in Multi Access Communication Nerwork
    2.
    发明申请
    Method of Switching Multi-Mode Multi-Ban Mobile Communication Terminal in Multi Access Communication Nerwork 审中-公开
    多接入通信系统中多模多移动通信终端的切换方法

    公开(公告)号：US20080049673A1

    公开(公告)日：2008-02-28

    申请号：US10587245

    申请日：2005-01-26

    申请人： Seong-Soo Park ,  Sang-Shin Lee ,  Dong-Hahk Lee

    发明人： Seong-Soo Park ,  Sang-Shin Lee ,  Dong-Hahk Lee

    IPC分类号： H04Q7/00

    CPC分类号： H04W36/30 ,  H04W36/14 ,  H04W80/00

    摘要： The present invention relates to a mode switching method for a multi-mode multiband mobile communication terminal in a multi-access communication network, which is capable of effectively providing handoff to the user mobile communication terminal in heterogeneous communication networks. The method includes the first step of calculating the link quality of a Wireless Local Area Network (WLAN); the second step of comparing the link quality with a first reference value; the third step of measuring a signal from the portable Internet having coverage wider than that of the current communication network if it is determined that the link quality of the WLAN is lower than the first reference value; the fourth step of calculating the link quality of the portable Internet; and the fifth step of switching the mode of the mobile communication terminal to perform handoff to the portable Internet if it is determined that the link quality of the portable Internet is higher than a second reference value.

    摘要翻译： 本发明涉及用于多接入通信网络中的多模多频移动通信终端的模式切换方法，其能够在异构通信网络中有效地向用户移动通信终端提供切换。 该方法包括计算无线局域网（WLAN）的链路质量的第一步骤; 将链路质量与第一参考值进行比较的第二步骤; 如果确定WLAN的链路质量低于第一参考值，则测量来自便携式因特网的信号的第三步，其覆盖范围比当前通信网络的覆盖范围更广; 计算便携式互联网链路质量的第四步; 以及如果确定便携式因特网的链路质量高于第二参考值，则切换移动通信终端的模式以执行到便携式因特网的切换的第五步骤。

    METHOD AND SYSTEM FOR ESTIMATING ADAPTIVE COMBINED CHANNEL IN CDMA SYSTEM BASED ON TIME DIVISION DUPLEX SYSTEM
    4.
    发明申请
    METHOD AND SYSTEM FOR ESTIMATING ADAPTIVE COMBINED CHANNEL IN CDMA SYSTEM BASED ON TIME DIVISION DUPLEX SYSTEM 失效
    基于时分双工系统估计CDMA系统中自适应组合通道的方法与系统

    公开(公告)号：US20100322116A1

    公开(公告)日：2010-12-23

    申请号：US12665885

    申请日：2008-06-19

    申请人： Dong-Hahk Lee ,  Ra-Mi Lee ,  Seong-Soo Park ,  Sang-Shin Lee ,  Jae-Hwang Yu ,  Jong-Tae Ihm ,  Duk-Kyung Kim

    发明人： Dong-Hahk Lee ,  Ra-Mi Lee ,  Seong-Soo Park ,  Sang-Shin Lee ,  Jae-Hwang Yu ,  Jong-Tae Ihm ,  Duk-Kyung Kim

    IPC分类号： H04J3/00 ,  H04B7/216

    CPC分类号： H04B1/7105 ,  H04B2201/70709

    摘要： Disclosed is a method and system for estimating an adaptive joint channel in a CDMA system based on TDD. The method includes the steps of a) receiving activity information of a mobile terminal; b) parsing the activity information, and transmitting a midamble sequence to the mobile terminal when a result of the parsing shows that the mobile terminal is in an ON state; c) conducting adaptive joint channel estimation by using the midamble sequence in the mobile terminal; and d) conducting adaptive joint detection by using a channel impulse response of the mobile terminal, obtained as a result of conducting the adaptive joint channel estimation. The method and system decreases the complexity in channel estimation and additionally increases the accuracy of channel estimation by reducing transmission power consumption and eliminating unnecessary interference.

    摘要翻译： 公开了一种基于TDD来估计CDMA系统中的自适应联合信道的方法和系统。 该方法包括以下步骤：a）接收移动终端的活动信息; b）解析活动信息，并且当解析结果表明移动终端处于ON状态时，向移动终端发送midamble序列; c）通过使用移动终端中的中间码序列来进行自适应联合信道估计; 以及d）通过使用作为进行自适应联合信道估计的结果获得的移动终端的信道脉冲响应来进行自适应联合检测。 该方法和系统降低了信道估计的复杂度，并通过降低传输功耗并消除了不必要的干扰，增加了信道估计的准确性。

    CHIP EQUALIZATION APPARATUS AND METHOD THEREOF
    5.
    发明申请
    CHIP EQUALIZATION APPARATUS AND METHOD THEREOF 有权
    芯片均衡装置及其方法

    公开(公告)号：US20100068989A1

    公开(公告)日：2010-03-18

    申请号：US12520935

    申请日：2007-12-27

    申请人： Goon Seop Lee ,  Sung Hoon Lee ,  Jong Tae Ihm ,  Jae Hwang Yu ,  Dong Hahk Lee ,  Ku Ik Chung ,  Jin Hee Han

    发明人： Goon Seop Lee ,  Sung Hoon Lee ,  Jong Tae Ihm ,  Jae Hwang Yu ,  Dong Hahk Lee ,  Ku Ik Chung ,  Jin Hee Han

    IPC分类号： H04H20/74

    CPC分类号： H04N7/20 ,  H04B1/7097 ,  H04B1/7115 ,  H04B2201/70715 ,  H04H40/90 ,  H04J13/004 ,  H04J13/0048 ,  H04L25/03038 ,  Y02D70/40

    摘要： Disclosed is a chip equalization apparatus and method thereof, which selects some clusters with high signal power among broadcast signal clusters continuously received in multi-path channels to extract a plurality of cluster signals, equalizes each of the input cluster signals, and combines all equalization outputs again, thereby leading to low power consumption and efficient equalization. The chip equalization apparatus for use in a satellite broadcasting receiving system comprising: a cluster signal extracting part for extracting a plurality of cluster signals from received broadcast signals; and a plurality of chip equalizers receiving cluster signals from the cluster signal extracting part and updating tap coefficients to compensate the broadcast signals.

    摘要翻译： 公开了一种芯片均衡装置及其方法，其在多路径信道中连续接收的广播信号簇中选择一些具有高信号功率的簇，以提取多个簇信号，均衡每个输入簇信号，并组合所有均衡输出 从而导致低功耗和高效均衡。 一种用于卫星广播接收系统的码片均衡装置，包括：群集信号提取部分，用于从接收到的广播信号中提取多个群集信号; 以及多个芯片均衡器，从群集信号提取部分接收群集信号，并更新抽头系数以补偿广播信号。

    Method and device for inputting equation
    6.
    发明授权
    Method and device for inputting equation 有权
    输入方程的方法和装置

    公开(公告)号：US09372828B2

    公开(公告)日：2016-06-21

    申请号：US13883496

    申请日：2011-11-03

    申请人： Seung Lock Choe ,  Nam Sook Wee ,  Doo Seok Lee ,  Jung Kyo Sohn ,  Haeng Moon Kim ,  Yong Gil Park ,  Keun Tae Park ,  Dong Hahk Lee

    发明人： Seung Lock Choe ,  Nam Sook Wee ,  Doo Seok Lee ,  Jung Kyo Sohn ,  Haeng Moon Kim ,  Yong Gil Park ,  Keun Tae Park ,  Dong Hahk Lee

    IPC分类号： G06F15/18 ,  G06F15/02 ,  G06F17/10 ,  G06F17/21

    CPC分类号： G06F15/18 ,  G06F15/02 ,  G06F17/10 ,  G06F17/215

    摘要： The present disclosure relates to a method and apparatus for inputting equations. An equation input apparatus includes a learning context recognizer for extracting learning context information regarding a learner; a target equation group extractor for generating a target equation group including target mathematical symbols based on the extracted learning context information; and a predicted equation provider for providing a predicted mathematical symbol list relating to information, input or selected from the target equation group by user command, and for reflecting an equation selected from the predicted mathematical symbol list in the input or selected information.

    摘要翻译： 本公开涉及一种用于输入等式的方法和装置。 方程输入装置包括用于提取关于学习者的学习情境信息的学习上下文识别器; 目标方程组提取器，用于基于所提取的学习上下文信息来生成包括目标数学符号的目标方程组; 以及预测方程式提供器，用于提供与通过用户命令从目标方程组输入或选择的信息相关的预测数学符号列表，并用于反映从输入或选择的信息中的预测数学符号列表中选出的方程。

    SYSTEM, SERVER AND METHOD FOR PROVIDING SUPPLEMENTARY INFORMATION SERVICE RELATED TO BROADCAST CONTENT
    7.
    发明申请
    SYSTEM, SERVER AND METHOD FOR PROVIDING SUPPLEMENTARY INFORMATION SERVICE RELATED TO BROADCAST CONTENT 有权
    用于提供与广播内容相关的补充信息服务的系统，服务器和方法

    公开(公告)号：US20100325667A1

    公开(公告)日：2010-12-23

    申请号：US12446179

    申请日：2007-11-20

    申请人： Goon Seop Lee ,  Dong Hahk Lee ,  Jae Hwang Yu ,  Jong Tae Ihm ,  Se Hyun Oh ,  Ku Ik Chung

    发明人： Goon Seop Lee ,  Dong Hahk Lee ,  Jae Hwang Yu ,  Jong Tae Ihm ,  Se Hyun Oh ,  Ku Ik Chung

    IPC分类号： H04N5/445 ,  H04N7/173

    CPC分类号： H04N21/435 ,  H04L67/2804 ,  H04L69/28 ,  H04N21/23412 ,  H04N21/235 ,  H04N21/242 ,  H04N21/4348 ,  H04N21/8133 ,  H04N21/8547

    摘要： The present invention relates to a system and method for providing a supplementary information service related to broadcast content. The system for providing a supplementary information service related to broadcast content being broadcasted to user terminal comprises a Time Information Creating Server for Identifying a start time information of the broadcast content; and a Supplementary Information Service Providing Server for receiving the start time information of the broadcast content from the Time Information Creating Server, calculating elapsed time for a specific scene based on the start time information, and providing a user terminal with an supplementary information corresponding to the scene based on the elapsed time, through a communication network. And the method for providing a supplementary information related to broadcast content being broadcasted to user terminal comprises steps of identifying a start time information of the broadcast content; calculating elapsed time for a specific scene based on the start time information; and providing a user terminal with an supplementary information corresponding to the scene based on the elapsed time, through a communication network.

    摘要翻译： 本发明涉及一种用于提供与广播内容相关的补充信息服务的系统和方法。 用于提供与正广播的广播内容相关的补充信息服务的系统包括：用于识别广播内容的开始时间信息的时间信息创建服务器; 以及补充信息服务提供服务器，用于从时间信息创建服务器接收广播内容的开始时间信息，基于开始时间信息计算特定场景的经过时间，以及向用户终端提供对应于 基于经过的时间，通过通信网络的场景。 并且提供与正广播的广播内容有关的补充信息的方法包括步骤：识别广播内容的开始时间信息; 基于开始时间信息计算特定场景的经过时间; 以及通过通信网络，基于经过的时间向用户终端提供与场景相对应的补充信息。

    SYSTEM AND METHOD FOR SYNCHRONING BROADCAST CONTENT WITH SUPPLEMENTARY INFORMATION
    8.
    发明申请
    SYSTEM AND METHOD FOR SYNCHRONING BROADCAST CONTENT WITH SUPPLEMENTARY INFORMATION 有权
    用于与补充信息同步广播内容的系统和方法

    公开(公告)号：US20100295992A1

    公开(公告)日：2010-11-25

    申请号：US12446414

    申请日：2008-01-08

    申请人： Goon Seop Lee ,  Dong Hahk Lee ,  Jae Hwang Yu ,  Jong Tae Ihm ,  Se Hyun Oh ,  Kang Il Koh

    发明人： Goon Seop Lee ,  Dong Hahk Lee ,  Jae Hwang Yu ,  Jong Tae Ihm ,  Se Hyun Oh ,  Kang Il Koh

    IPC分类号： H04N5/04

    CPC分类号： H04N21/6581 ,  H04L65/4076 ,  H04N5/445 ,  H04N7/17318 ,  H04N21/235 ,  H04N21/2353 ,  H04N21/41407 ,  H04N21/4307 ,  H04N21/435 ,  H04N21/4722 ,  H04N21/4725 ,  H04N21/8133 ,  H04N21/8547

    摘要： Disclosed herein is a system and method for providing a supplementary information associated with a broadcast content. The system provides a supplementary information associated with a specific broadcast program in the broadcast content by means of a supplementary information server, wherein the supplementary information server comprises a broadcasting receiving unit for receiving the broadcast content; a synchronization information unit for storing a synchronization information of the supplementary information associated with the specific broadcast program; a video comparison unit for comparing screens of the broadcast content with a previously stored scene change screen of the specific broadcast program and setting a start time of the specific broadcast program; a supplementary information extracting unit for calculating an elapsed time from the start time of the specific broadcast program to a specific screen and extracting the supplementary information corresponding to the elapsed time. The supplementary information associated with the specific broadcast program in the broadcast content is provided through the steps of receiving a synchronization information of the supplementary information associated with the specific broadcast program; setting a start time of the specific broadcast program by comparing screens of the broadcast content with a previously stored scene change screen of the specific broadcast program; calculating an elapsed time corresponding to a specific screen based on the start time; extracting the supplementary information corresponding to the elapsed time.

    摘要翻译： 本文公开了一种用于提供与广播内容相关联的补充信息的系统和方法。 该系统通过辅助信息服务器提供与广播内容中的特定广播节目相关联的补充信息，其中补充信息服务器包括：广播接收单元，用于接收广播内容; 同步信息单元，用于存储与特定广播节目相关联的补充信息的同步信息; 视频比较单元，用于将广播内容的画面与特定广播节目的先前存储的场景改变画面进行比较，并设置特定广播节目的开始时间; 补充信息提取单元，用于计算从特定广播节目的开始时间到特定屏幕的经过时间，并提取与经过的时间相对应的补充信息。 通过以下步骤提供与广播内容中的特定广播节目相关联的补充信息：接收与特定广播节目相关联的补充信息的同步信息; 通过将广播内容的画面与特定广播节目的先前存储的场景改变画面进行比较来设置特定广播节目的开始时间; 基于开始时间计算与特定画面对应的经过时间; 提取与经过的时间相对应的补充信息。

    METHOD AND APPARATUS FOR HIERARCHICAL MODULATION AND DEMODULATION IN DIGITAL BROADCASTING SYSTEM
    9.
    发明申请
    METHOD AND APPARATUS FOR HIERARCHICAL MODULATION AND DEMODULATION IN DIGITAL BROADCASTING SYSTEM 审中-公开
    数字广播系统中分层调制和解调的方法与装置

    公开(公告)号：US20080137775A1

    公开(公告)日：2008-06-12

    申请号：US11931074

    申请日：2007-10-31

    申请人： Tae Hoon KIM ,  In Ki LEE ,  Seung Hyun CHOI ,  Cheon In OH ,  Dae Ig CHANG ,  Ho Jin LEE ,  Sung Hoon LEE ,  Goon Seop LEE ,  Dong Hahk LEE ,  Jae Hwang YU

    发明人： Tae Hoon KIM ,  In Ki LEE ,  Seung Hyun CHOI ,  Cheon In OH ,  Dae Ig CHANG ,  Ho Jin LEE ,  Sung Hoon LEE ,  Goon Seop LEE ,  Dong Hahk LEE ,  Jae Hwang YU

    IPC分类号： H04L27/20 ,  H03D3/22 ,  H04L27/22

    CPC分类号： H04L27/183

    摘要： Provided are a method and apparatus for hierarchical modulation and demodulation in a Digital Multimedia Broadcasting (DMB) system. The method for hierarchical modulation in a digital broadcast signal transmitter includes the steps of: receiving a first broadcast signal and a second broadcast signal from outside, and encoding the broadcast signals by a first method and a second method, respectively; synthesizing the encoded first and second broadcast signals; determining a modulation point using a constellation diagram of an I-Q plane corresponding to the synthesized signal; and hierarchically phase-shift modulating the synthesized signal using the determined modulation point. Here, in the I-Q plane, the modulation point is deviated by a predetermined deviation angle from a phase axis passing through a modulation point of the first broadcast signal and an origin of the I-Q plane.

    摘要翻译： 提供了一种用于数字多媒体广播（DMB）系统中的分级调制和解调的方法和装置。 数字广播信号发射机中的分级调制方法包括以下步骤：从外部接收第一广播信号和第二广播信号，并分别通过第一种方法和第二种方法对广播信号进行编码; 合成编码的第一和第二广播信号; 使用与合成信号对应的I-Q平面的星座图确定调制点; 以及使用所确定的调制点对合成信号进行分层相移。 这里，在I-Q平面中，调制点偏离了通过第一广播信号的调制点的相位轴和I-Q平面的原点的预定偏差角。