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1. 发明授权

US08644306B2 Method and apparatus for VoIP video communication 有权
标题翻译： VoIP视频通信的方法和装置
公开(公告)号：US08644306B2
公开(公告)日：2014-02-04
申请号：US11643815
申请日：2006-12-22
申请人： Soung-Kwan Kimn , Hyun-Min Yoon , Hui-Jae Lee , Ji-Youn Jung , Myeon-Kee Youn , Seong-Joon Jeon
发明人： Soung-Kwan Kimn , Hyun-Min Yoon , Hui-Jae Lee , Ji-Youn Jung , Myeon-Kee Youn , Seong-Joon Jeon
IPC分类号： H04L12/28 , H04N7/173 , H04N5/50
CPC分类号： H04L65/1069 , H04L65/1009 , H04L65/1043 , H04L65/608 , H04N7/141 , H04N7/147
摘要： In a Voice over Internet Protocol (VoIP) video communication method and apparatus, first and second VoIP-based terminals store video event indexes and images mapped thereto with respect to state information of a user and terminal, and establish a session using session establishment information defining the video event. The first terminal then transmits a data packet including the video event index, and the second terminal receives the data packet and outputs an image mapped to the video event index of the images stored in advance. Thus, by transmitting and receiving a predefined index alone without transmitting user and terminal states as a real time data-type image, the VoIP video communication method and apparatus prevent unnecessary waste of bandwidth in video communication.
摘要翻译：在VoIP协议（VoIP）视频通信方法和装置中，第一和第二基于VoIP的终端存储关于用户和终端的状态信息映射到其上的视频事件索引和图像，并且使用定义的会话建立信息建立会话视频事件。然后，第一终端发送包括视频事件索引的数据分组，并且第二终端接收数据分组，并输出映射到预先存储的图像的视频事件索引的图像。因此，通过在不将用户和终端状态作为实时数据型图像的情况下单独发送和接收预定索引，VoIP视频通信方法和装置可以防止视频通信中带宽的不必要浪费。

2. 发明授权

US08045635B2 Inter-symbol interference cancellation method for orthogonal frequency division multiple access system 有权
标题翻译：正交频分多址系统的符号间干扰消除方法
公开(公告)号：US08045635B2
公开(公告)日：2011-10-25
申请号：US11844163
申请日：2007-08-23
申请人： Seong Yun Ko , Seong Kyu Song , Myeon Kee Youn
发明人： Seong Yun Ko , Seong Kyu Song , Myeon Kee Youn
IPC分类号： H04L5/12 , H04L23/02
CPC分类号： H04L27/2602 , H04L5/023 , H04W36/18
摘要： An inter-symbol interference cancellation method for an orthogonal frequency division multiple access system is provided. The inter-symbol interference cancellation method includes transmitting, at a base station, an OFDMA symbol having a first half part and a second half part divided in time; receiving, at a mobile station, the OFDMA symbol; and restoring the OFDMA symbol by repeating one of the first half part or the second half part. The ISI cancellation method for an OFDMA communication system of the present invention uses an OFDMA symbol having two identical parts sequentially arranged in time, whereby it is possible to recover a transmitted OFDMA symbol if at least one of the two parts is successfully received.
摘要翻译：提供了一种用于正交频分多址系统的符号间干扰消除方法。符号间干扰消除方法包括在基站发送具有在时间上划分的前半部分和后半部分的OFDMA符号; 在移动站处接收OFDMA符号; 以及通过重复前半部分或后半部分中的一个来恢复OFDMA符号。本发明的OFDMA通信系统的ISI取消方法使用具有在时间上顺序排列的两个相同部分的OFDMA符号，从而如果两个部分中的至少一个被成功接收，则可以恢复发送的OFDMA符号。

3. 发明授权

US08045514B2 Transmitting frames in wireless local area network (WLAN) 失效
标题翻译：无线局域网（WLAN）中的发射帧
公开(公告)号：US08045514B2
公开(公告)日：2011-10-25
申请号：US11474478
申请日：2006-06-26
申请人： Hak-Hoon Song , Min-Cheul Cha , Bo-Seung Hwang , Seong-Jae Min , Myeon-Kee Youn , Joo-Yong Park
发明人： Hak-Hoon Song , Min-Cheul Cha , Bo-Seung Hwang , Seong-Jae Min , Myeon-Kee Youn , Joo-Yong Park
IPC分类号： H04B7/04 , H04B7/204 , H04W76/02
CPC分类号： H04W74/0808 , H04W24/00 , H04W48/08 , H04W84/12
摘要： A method and apparatus for transmitting frames in a Wireless Local Area Network (WLAN), each station in the WLAN determines whether there is another station in a hidden state. The station transmits a frame to an Access Point (AP) without performing an Request To Send/Clear To Send (RTS/CTS) mechanism when there is another station in a hidden state, thereby improving use efficiency of the wireless network and minimizing frame transmission delay.
摘要翻译：一种用于在无线局域网（WLAN）中发送帧的方法和装置，WLAN中的每个站确定是否存在处于隐藏状态的另一站。当存在处于隐藏状态的另一台站时，该站向接入点（AP）发送帧而不执行请求发送/清除发送（RTS / CTS）机制，从而提高无线网络的使用效率并最小化帧传输延迟。

4. 发明授权

US08009746B2 Uplink signal receiving method and apparatus using successive interference cancellation in wireless transmission system based on OFDMA 有权
标题翻译：在基于OFDMA的无线传输系统中使用连续干扰消除的上行信号接收方法和装置
公开(公告)号：US08009746B2
公开(公告)日：2011-08-30
申请号：US11636850
申请日：2006-12-11
申请人： Seong-Yun Ko , Joo-Yong Park , Myeon-Kee Youn
发明人： Seong-Yun Ko , Joo-Yong Park , Myeon-Kee Youn
IPC分类号： H04K1/10 , H04L27/28
CPC分类号： H04L25/03159 , H04J11/0043 , H04L5/0007 , H04L25/03821 , H04L2025/03426 , H04L2027/003
摘要： An uplink signal receiving method and apparatus using successive interference cancellation (SIC) in a wireless transmission system based on Orthogonal Frequency Division Multiple Access (OFDMA) are provided. The uplink signal receiving method includes storing in a provisional storage each uplink intermediate frequency (IF) signal received through an antenna of a base station and subjected to analog-to-digital conversion; analyzing the uplink IF signals stored in the provisional storage and determining a terminal to be restored; converting a data symbol of the determined terminal to be restored from a time domain into a frequency domain; performing channel/phase correction on the converted data symbol; demodulating the corrected data symbol; determining if there is a terminal to be restored; and when there is a terminal to be restored, removing the demodulated data symbol of the terminal to be restored from the temporarily stored uplink IF signals and then updating the uplink IF signals; thereby, to reducing interference between sub-carriers of the terminals caused by deviation of a center frequency of the sub-carriers of terminals constituting the uplink signal in the OFDMA-based wireless transmission system.
摘要翻译：提供了一种在基于正交频分多址（OFDMA）的无线传输系统中使用连续干扰消除（SIC）的上行链路信号接收方法和装置。上行链路信号接收方法包括在临时存储器中存储通过基站的天线接收并进行模数转换的每个上行链路中频（IF）信号; 分析存储在临时存储器中的上行链路IF信号并确定要恢复的终端; 将要从时域恢复的确定终端的数据符号转换为频域; 对转换的数据符号执行信道/相位校正; 解调校正后的数据符号; 确定是否有要恢复的终端; 并且当存在要恢复的终端时，从临时存储的上行链路IF信号中去除要恢复的终端的解调数据符号，然后更新上行链路IF信号; 从而减少在基于OFDMA的无线传输系统中由构成上行链路信号的终端的子载波的中心频率的偏差引起的终端子载波之间的干扰。

5. 发明授权

US08009664B2 Method for exchanging media description information between user agents using session initiation protocol 有权
标题翻译：使用会话发起协议在用户代理之间交换媒体描述信息的方法
公开(公告)号：US08009664B2
公开(公告)日：2011-08-30
申请号：US11315185
申请日：2005-12-23
申请人： Taek-Ho Kim , Myeon-Kee Youn , Seong-Joon Jeon , Jin-Suk Lee , Kwang-Yong Choi , Jae-Kil Lee
发明人： Taek-Ho Kim , Myeon-Kee Youn , Seong-Joon Jeon , Jin-Suk Lee , Kwang-Yong Choi , Jae-Kil Lee
IPC分类号： H04L12/66 , H04M3/42 , G06F15/16
CPC分类号： H04L65/1006 , H04L29/06027
摘要： A method for exchanging media description information between user agents using a session initiation protocol (SIP) comprises the steps of: providing information on an OS and sound module of a first user agent so that the first user agent generates, in a media description field of a session description protocol (SDP), an SIP message including the information on the OS and sound module of the first user agent, and sends it to a second user agent; and setting a processing format for voice data of the second user agent so that the second user agent determines the voice data format supportable by the first user agent from the information on the OS and sound module of the first user agent, compares it with the voice data format supportable by the second user agent, and sets a format commonly supportable by the first and second user agents as the voice data format of the second user agent.
摘要翻译：使用会话发起协议（SIP）在用户代理之间交换媒体描述信息的方法包括以下步骤：提供关于第一用户代理的OS和声音模块的信息，使得第一用户代理在媒体描述字段中生成会话描述协议（SDP），包括OS的信息和第一用户代理的声音模块的SIP消息，并将其发送到第二用户代理; 并且设置第二用户代理的语音数据的处理格式，使得第二用户代理根据第一用户代理的OS和声音模块上的信息确定第一用户代理可支持的语音数据格式，将其与语音进行比较由第二用户代理支持的数据格式，并且将由第一和第二用户代理通常可支持的格式设置为第二用户代理的语音数据格式。

6. 发明授权

US07656889B2 IP-based voice/video communication system and call pickup/forwarding method 有权
标题翻译：基于IP的语音/视频通信系统和呼叫转接方法
公开(公告)号：US07656889B2
公开(公告)日：2010-02-02
申请号：US10987119
申请日：2004-11-15
申请人： Seong-Joon Jeon , Taek-Ho Kim , Mun-Hyo Jung , Soung-Kwan Kim , Myeon-Kee Youn
发明人： Seong-Joon Jeon , Taek-Ho Kim , Mun-Hyo Jung , Soung-Kwan Kim , Myeon-Kee Youn
IPC分类号： H04L12/54
CPC分类号： H04L65/1036 , H04L29/06027 , H04L65/1026 , H04L65/1069 , H04L65/1083 , H04M3/42212 , H04M3/54 , H04M7/006 , H04W76/10
摘要： An IP based voice/video communication system and call pickup/forwarding method and a program storage device, readable by a machine, tangibly embodying a program of instructions executable by the machine to perform the call pickup/forwarding method enables a subscriber can have voice/video communication irrespective of time or place by forwarding voice/video calls between voice/video communication terminals such as a TV, PDA and home pad, or by picking up a incoming call at a nearby terminal if it is difficult for the subscriber to answer the call at the originally called terminal from his/her location.
摘要翻译：一种基于IP的语音/视频通信系统和呼叫转接方法以及机器可读的程序存储装置，其有形地体现了可由机器执行的执行呼叫转移/转发方法的指令程序，使得用户可以具有语音/ 通过在诸如电视，PDA和家庭电话之间的语音/视频通信终端之间转发语音/视频呼叫而不考虑时间或地点的视频通信，或者如果用户难以应答来自附近的终端的接入呼叫从他/她的位置呼叫最初被叫的终端。

7. 发明申请

US20080046719A1 Access point and method for supporting multiple authentication policies 审中-公开
标题翻译：支持多种认证策略的接入点和方法
公开(公告)号：US20080046719A1
公开(公告)日：2008-02-21
申请号：US11725189
申请日：2007-03-16
申请人： Sung Jun Kim , Myeon Kee Youn , Seong Kyu Song
发明人： Sung Jun Kim , Myeon Kee Youn , Seong Kyu Song
IPC分类号： H04L9/00
CPC分类号： H04W12/06 , H04L63/162 , H04L63/20 , H04L63/205 , H04W88/08
摘要： An access point and a method supporting multiple authentication policies for a WLAN are disclosed. The access point according to the present invention includes an authentication policy detector for detecting an authentication policy of a terminal from a signal transmitted by the terminal, a plurality of authentication modules for performing the authentication procedures corresponding to different authentication policies, and an authentication processor for performing an appropriate authentication procedure by selecting the corresponding authentication module according to the authentication policy detected by the authentication policy detector. The access point and method for supporting multiple authentication policies according to the present invention avoid duplication of network elements for authentication by providing an authentication service for terminals using different authentication policies with a single access point.
摘要翻译：公开了一种接入点和支持WLAN认证策略的方法。根据本发明的接入点包括：认证策略检测器，用于从终端发送的信号中检测终端的认证策略;多个认证模块，用于执行与不同认证策略相对应的认证过程，以及认证处理器通过根据认证策略检测器检测到的认证策略选择相应的认证模块来执行适当的认证过程。根据本发明的用于支持多个认证策略的接入点和方法通过为使用具有单个接入点的不同认证策略的终端提供认证服务来避免用于认证的网元的重复。

8. 发明申请

US20070217323A1 Apparatus and method for reducing inter-subcarrier interference in OFDMA system 审中-公开
标题翻译：用于减少OFDMA系统中子载波间干扰的装置和方法
公开(公告)号：US20070217323A1
公开(公告)日：2007-09-20
申请号：US11602067
申请日：2006-11-20
申请人： Seong-Yun Ko , Joo-Yong Park , Myeon-Kee Youn
发明人： Seong-Yun Ko , Joo-Yong Park , Myeon-Kee Youn
IPC分类号： H04J3/10 , H04J11/00
CPC分类号： H04W16/14 , H04L5/023 , H04L27/2647 , H04L27/2657 , H04W4/18
摘要： An apparatus and method for reducing inter-subcarrier interference (ICI) in an Orthogonal Frequency Division Multiple Access (OFDMA) system are provided. The method includes determining a correction frequency from uplink intermediate frequency (IF) signals subjected to analog-to-digital conversion when an uplink radio frequency (RF) signal is input through an antenna of a base station and each uplink IF signal (I(n)+j1(n)) is input,; and correcting the uplink IF signal so as to correspond to the determined correction frequency. Thereby, it is possible to reduce the ICI of each terminal caused by mismatching of the interval of the inter-subcarrier center frequency of each terminal that constitutes the uplink signal in the OFDMA system.
摘要翻译：提供了一种用于减少正交频分多址（OFDMA）系统中的副载波干扰（ICI）的装置和方法。该方法包括：当通过基站天线输入上行链路射频（RF）信号和每个上行IF信号（I（n））时，从经过模数转换的上行中频（IF）信号确定校正频率）+ j 1（n））; 以及校正所述上行链路IF信号以对应于所确定的校正频率。由此，可以减少OFDMA系统中构成上行链路信号的各终端的副载波中心频率的间隔的不匹配引起的各终端的ICI。

9. 发明申请

US20070070992A1 System and method for providing voice over internet protocol service using cellular phone 审中-公开
标题翻译：使用蜂窝电话提供网络语音协议服务的系统和方法
公开(公告)号：US20070070992A1
公开(公告)日：2007-03-29
申请号：US11476809
申请日：2006-06-29
申请人： Jin-Suk Lee , Myeon-Kee Youn
发明人： Jin-Suk Lee , Myeon-Kee Youn
IPC分类号： H04L12/66
CPC分类号： H04L29/06027 , H04L65/1069 , H04L65/602 , H04M1/2535 , H04M1/72522 , H04M7/0072
摘要： In a system and method of providing Voice over Internet Protocol (VoIP) service, when a wireless terminal and a VoIP service terminal are connected on a VoIP service dedicated line, and the wireless terminal transmits to the VoIP service terminal a message requesting call connection to a destination Internet Protocol (IP) terminal, the VoIP service terminal connects the call to the destination IP terminal according to the call connection request message, and transceives a voice packet according to different codec information between the wireless terminal and the VoIP service terminal.
摘要翻译：在提供VoIP语音服务的系统和方法中，当无线终端和VoIP业务终端连接在VoIP业务专用线路上时，无线终端向VoIP业务终端发送请求呼叫连接的消息目的地因特网协议（IP）终端，VoIP服务终端根据呼叫连接请求消息将呼叫连接到目的地IP终端，并且在无线终端和VoIP服务终端之间根据不同的编解码信息收发语音分组。

10. 发明申请

US20050025176A1 Medium access control in wireless local area network 审中-公开
标题翻译：无线局域网中的媒体接入控制
公开(公告)号：US20050025176A1
公开(公告)日：2005-02-03
申请号：US10891329
申请日：2004-07-15
申请人： Seong-Yun Ko , Seong-Joon Jeon , Soung-Kwan Kim , Myeon-Kee Youn , Joo-Yong Park
发明人： Seong-Yun Ko , Seong-Joon Jeon , Soung-Kwan Kim , Myeon-Kee Youn , Joo-Yong Park
IPC分类号： H04L12/28 , H04L12/413 , H04B7/212
CPC分类号： H04W74/085 , H04W72/12 , H04W74/0875 , H04W84/12
摘要： A medium access control method and apparatus and program storage device in a CSMA/CA (Carrier Sense Multiple Access with Collision Avoidance) based wireless LAN (Local Area Network) classifies stations in a CSMA/CA based wireless LAN system into a number of groups according to a transmission priority to assign a different DIFS (Distributed Coordination Function InterFrame Space) to each group. Different and fixed back-off times are assigned to stations that belong to the same priority group according to the transmission priority, and the back-off time is reset to the back-off time that each station has been assigned for every re-transmission contention, to guarantee a transmission opportunity to the station with the higher transmission priority in the same priority group, and to guarantee a transmission opportunity to the station with the higher transmission priority irrespective of the number of stations that wish to make a transmission, and to reduce a chance of collision so as not to degrade a throughput since the waiting time of each station is different.
摘要翻译：基于CSMA / CA（具有冲突避免的载波侦听多路访问）的无线LAN（局域网）中的媒体访问控制方法和装置和程序存储装置将基于CSMA / CA的无线LAN系统中的站分成多个组，到传输优先级，以向每个组分配不同的DIFS（分布式协调功能帧间空间）。根据传输优先级，将不同且固定的退避时间分配给属于相同优先级组的站，并且退避时间被重新设置为每个站已被分配用于每次重传争用的退避时间以保证在同一优先级组中具有较高传输优先级的站的传输机会，并且保证具有更高传输优先级的站的传输机会，而不管希望进行传输的站的数量如何，并且减少因为每个车站的等待时间不同，所以碰撞的机会不会降低吞吐量。

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