公开(公告)号：US20070217529A1

公开(公告)日：2007-09-20

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

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。

公开(公告)号：US20070197221A1

公开(公告)日：2007-08-23

申请号：US11526023

申请日：2006-09-25

申请人： Young-Sook Ryu ,  Jun-Hwa Seo ,  Myeon-Kee Youn ,  Seong-Joon Jeon

发明人： Young-Sook Ryu ,  Jun-Hwa Seo ,  Myeon-Kee Youn ,  Seong-Joon Jeon

IPC分类号： H04Q7/20

CPC分类号： H04L67/2828 ,  H04L67/28 ,  H04W4/18 ,  H04W28/16 ,  H04W36/0011 ,  H04W60/00 ,  H04W80/04 ,  H04W84/12 ,  H04W88/181

摘要： In a handoff system and method for a dual mode terminal, the handoff system includes: a dual mode terminal which receives a message containing location information of a router of a second network while performing handoff from a first network to the second network, and which transmits a registration request message containing the location information of the router; and a home agent which transcodes data transmitted from a content providing server to be adapted for a bandwidth of the second network on the basis of information contained in the registration request message received from the dual mode terminal, and which transmits the transcoded data to the dual mode terminal.

摘要翻译： 在双模终端的切换系统和方法中，切换系统包括：双模终端，其在执行从第一网络到第二网络的切换的同时接收包含第二网络的路由器的位置信息的消息，并且发送 包含路由器的位置信息的注册请求消息; 以及归属代理，其基于从所述双模终端接收到的所述注册请求消息中包含的信息，对从内容提供服务器发送的适应于所述第二网络的带宽的数据进行转码，并将所述转码数据发送到所述双重 模式终端。

公开(公告)号：US20070168423A1

公开(公告)日：2007-07-19

申请号：US11526026

申请日：2006-09-25

申请人： Kum-Rye Park ,  Seong-Joon Jeon ,  Myeon-Kee Youn

发明人： Kum-Rye Park ,  Seong-Joon Jeon ,  Myeon-Kee Youn

IPC分类号： G06F15/16

CPC分类号： H04L12/1822 ,  H04L12/189 ,  H04L65/4023 ,  H04L65/4046 ,  H04N7/15

摘要： In a video conference system and method, a first terminal and second through Nth terminals maintain a session for a conference. The first terminal prevents an input of further information to the white board by the second through Nth terminals during a set time period from an input of information to the white board and the second through Nth terminals transmit further information, input during a buffering mode selected in an unlocked state, to other terminals participating in the session upon the input of information to the white board being allowed after the set time period has elapsed.

摘要翻译： 在视频会议系统和方法中，第一终端和第二至第N终端维持会议的会话。 在从信息输入到白板的设定时间段内，第一终端防止由第二至第N终端向白板输入进一步的信息，而第二至第N终端在第二至第N终端中选择的缓冲模式期间输入进一步的信息 在经过设定时间之后，在向白板输入信息时，参与会话的其他终端被允许。

公开(公告)号：US20070168422A1

公开(公告)日：2007-07-19

申请号：US11523581

申请日：2006-09-20

申请人： Mi-Ra Choe ,  Kwang-Yong Choi ,  Myeon-Kee Youn ,  Seong-Joon Jeon

发明人： Mi-Ra Choe ,  Kwang-Yong Choi ,  Myeon-Kee Youn ,  Seong-Joon Jeon

IPC分类号： G06F15/16

CPC分类号： H04L65/605 ,  H04L65/4053 ,  H04L65/4092

摘要： In a method and system for providing selective media data in a multimedia conference service, a selective media data provision request of a participant who wants to be selectively provided with media data is transmitted to a media server using Session Initiation Protocol (SIP), and media data selected or converted according to the request to the user are provided, thereby improving user convenience.

摘要翻译： 在用于在多媒体会议服务中提供选择性媒体数据的方法和系统中，希望选择性地提供媒体数据的参与者的选择性媒体数据提供请求被使用会话发起协议（SIP）和媒体传送到媒体服务器 提供根据用户请求而选择或转换的数据，从而提高用户便利性。

公开(公告)号：US20070115877A1

公开(公告)日：2007-05-24

申请号：US11544642

申请日：2006-10-10

申请人： Jiang Zhen ,  Myeon-Kee Youn ,  Seong-Joon Jeon

发明人： Jiang Zhen ,  Myeon-Kee Youn ,  Seong-Joon Jeon

IPC分类号： H04Q7/00 ,  H04Q7/24

CPC分类号： H04W72/10 ,  H04W28/08 ,  H04W84/12

摘要： In a wireless local area network (WLAN) and a channel selection method of a WLAN station, a station newly entering the WLAN captures packets from WLAN service channels, which packets are provided by at least one access point (AP) for a predetermined measuring time. The WLAN calculates, from the captured packets, busy factors indicative of the load on each WLAN service channel so as to confer a priority between WLAN service channels. The WLAN selects channels according to the conferred priority.

摘要翻译： 在无线局域网（WLAN）和WLAN站的信道选择方法中，新进入WLAN的站从WLAN业务信道捕获分组，由至少一个接入点（AP）提供预定测量时间的分组 。 WLAN从捕获的分组中计算指示每个WLAN服务信道上的负载的繁忙因子，以便在WLAN服务信道之间赋予优先级。 WLAN根据优先级选择信道。

公开(公告)号：US20060133302A1

公开(公告)日：2006-06-22

申请号：US11262785

申请日：2005-11-01

申请人： Hyun-Min Yoon ,  Soung-Kwan Kim ,  Myeon-Kee Youn ,  Seong-Joon Jeon

发明人： Hyun-Min Yoon ,  Soung-Kwan Kim ,  Myeon-Kee Youn ,  Seong-Joon Jeon

IPC分类号： H04B7/005 ,  H04Q7/24

CPC分类号： H04W28/08 ,  H04L47/14 ,  H04W24/00 ,  H04W84/12 ,  H04W92/10

摘要： In an apparatus and a method for controlling traffic for real time service between a wireless local area network (LAN) terminal and an access point in a wireless LAN system, a transceiver transmits and receives a packet to and from the access point, a signal-determination unit determines whether the packet to be transmitted/received via the transceiver is a real time packet, and a signal-controlling unit controls re-transmission according to transmission failure when the packet to be transmitted is determined to be a real time packet by the signal-determination unit. In this way, the invention maintains optimum traffic status in a wireless LAN environment, and lowers the risk of resetting the access point or the wireless LAN terminal. In addition, the invention prevents several coexisting wireless LAN terminals from interfering with real time traffic thereof and from delaying or corrupting voice and image data.

摘要翻译： 在无线局域网系统中的无线局域网（LAN）终端与接入点之间的实时业务流量控制装置和方法中，收发信机向接入点发送和接收分组， 确定单元确定通过收发器发送/接收的分组是否是实时分组，并且当要发送的分组被确定为实时分组时，信号控制单元根据传输失败来控制重传 信号判定单元。 以这种方式，本发明在无线LAN环境中保持最佳业务状态，并且降低重置接入点或无线LAN终端的风险。 此外，本发明防止多个共存的无线LAN终端干扰其实时业务并且防止延迟或破坏语音和图像数据。

公开(公告)号：US20060120338A1

公开(公告)日：2006-06-08

申请号：US11268480

申请日：2005-11-08

申请人： Bo-Seung Hwang ,  Myeon-Kee Youn

发明人： Bo-Seung Hwang ,  Myeon-Kee Youn

IPC分类号： H04Q7/24

CPC分类号： H04W52/346 ,  H04W52/24 ,  H04W84/12

摘要： Disclosed are a system and method for controlling transmission power in a wireless local area network (WLAN), and more particularly, a system and method for controlling transmission power in a WLAN that are capable of providing a WLAN service to terminals outside a service area by controlling the transmission power in the WLAN. Thus, link margin data of a station positioned at a hidden node of the WLAN is received from another station positioned in a service area, and the received link margin data is compared with preset link margin data for control of the transmission power in the WLAN.