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1.发明公开METHOD FOR USING FLEXIBLE BANDWIDTH IN OFDMA-BASED COGNITIVE RADIO SYSTEM, BASE STATION AND SUBSCRIBER STATION USING THE SAME 有权方法在A ON基于OFDMA的认知无线电系统中，基站和用户站采用灵活的带宽THAT
公开(公告)号：EP1946508A4
公开(公告)日：2011-10-12
申请号：EP06812487
申请日：2006-11-07
发明人： HWANG SUNG-HYUN , SONG MYUNG-SUN , KIM YUN-HEE , KIM CHANG-JOO , KO GWANGZEEN , UM JUNG-SUN
IPC分类号： H04L27/26
CPC分类号： H04L5/0044 , H04L5/0007 , H04L5/0037 , H04L5/0053 , H04L5/0064 , H04L5/0094
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2.发明公开NETWORK COMMUNICATION METHOD AND NETWORK DEVICE USING PREAMBLE 有权NETZWERKKOMMUNIKATIONSVERFAHREN UNDNETZWERKGERÄTMITPRÄAMBEL
公开(公告)号：EP2223445A4
公开(公告)日：2016-05-11
申请号：EP08859078
申请日：2008-12-10
发明人： HWANG SUNG-HYUN , UM JUNG-SUN , KO GWANGZEEN , SONG MYUNG-SUN , KIM CHANG-JOO
CPC分类号： H04W52/283 , H04L7/041 , H04W16/14 , H04W48/16 , H04W72/082
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3.发明公开METHOD OF MANAGING MULTIPLE CHANNELS IN SINGLE NETWORK AND NETWORK MANAGEMENT DEVICE 有权一种用于在单个网络和NETZWERWALTUNGSVERFAHREN管理多个渠道
公开(公告)号：EP2223468A4
公开(公告)日：2016-08-17
申请号：EP08859809
申请日：2008-12-10
发明人： UM JUNG-SUN , KO GWANGZEEN , KIM CHANG-JOO , SONG MYUNG-SUN , HWANG SUNG-HYUN , YOU SUNG-JIN
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4.发明公开METHOD OF GENERATING PILOT PATTERN FOR ADAPTIVE CHANNEL ESTIMATION IN OFDMA SYSTEMS, METHOD OF TRANSMITTING/RECEIVING USING THE PILOT PATTERN AND APPARATUS THEREOF 有权制造方法引导图样中自适应信道估计OFDMA系统，方法发送/接收使用导频图案及其装置
公开(公告)号：EP2011295A4
公开(公告)日：2012-05-23
申请号：EP07746165
申请日：2007-04-24
发明人： HWANG SUNG-HYUN , KIM CHANG-JOO , SONG MYUNG-SUN , UM JUNG-SUN
IPC分类号： H04L27/26
CPC分类号： H04W72/0406 , H04L5/0007 , H04L5/0048
摘要： Provided is a method of trasmitting/receiving an OFDM signal in which pilots are inserted, the pilots having a repeated pattern. The pilot pattern selects pilot symbol positions based on distances from pilots of previous orthogonal frequency division multiple access (OFDMA) symbols to a subcarrier position of a current OFDMA symbol in the frequency domain and the time domain, so that a low pilot density is maintained so as to effectively transmit data, and stable channel estimation performance can be obtained even in a bad channel environment. In addition, the minimum burst allocation size is determined according to the channel environment between the base station and the terminal, guaranteeing channel estimation performance suitable for the channel environment, and improving granularity, channel estimation latency, and channel estimation memory size.
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5.发明公开APPARATUS AND METHOD OF TRANSMITTING AND RECEIVING DATA FOR IMPROVING TRANSMISSION RATE 审中-公开用于发送和接收数据的设备和方法，以提高传输速率
公开(公告)号：EP2235900A4
公开(公告)日：2014-05-21
申请号：EP08723235
申请日：2008-02-29
发明人： HWANG SUNG-HYUN , UM JUNG SUN , SONG MYUNG SUN , KIM CHANG-JOO , IM SE-BIN , YOON TAE-WOONG , CHOI HYUNG-JIN
CPC分类号： H04L5/0051 , H04L25/0224 , H04L25/03292 , H04L27/2613 , H04L27/2647
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6.发明公开
公开(公告)号：EP1952559A4
公开(公告)日：2012-06-20
申请号：EP06812628
申请日：2006-11-16
发明人： KO GWANGZEEN , HWANG SUNG-HYUN , KANG BUB-JOO , KANG CHUNG-GU , KIM IL-HWAN , KIM CHANG-JOO , SONG MYUNG-SUN
CPC分类号： H04W36/06 , H04W16/14 , H04W72/0413
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公开(公告)号：EP2171959A4
公开(公告)日：2014-06-04
申请号：EP08766204
申请日：2008-06-11
发明人： HWANG SUNG-HYUN , UM JUNG-SUN , SONG MYUNG-SUN , KIM CHANG-JOO , KO GWANGZEEN
CPC分类号： H04L5/0007 , H04L5/006 , H04L5/0064 , H04L5/0092 , H04L25/0224
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8.发明公开BEACON RE-BROADCASTING APPARATUS, BEACON RE-BROADCASTING METHOD, AND INITIAL ACCESS REQUEST METHOD IN WIRELESS NETWORK 有权设备启动信标传输方法用于启动适用于无线网络初始接入请求信标传输和方法
公开(公告)号：EP2220821A4
公开(公告)日：2014-03-19
申请号：EP08857142
申请日：2008-11-19
发明人： KO GWANGZEEN , SONG MYUNG-SUN , HWANG SUNG-HYUN , UM JUNG-SUN , KIM CHANG-JOO , YOU SUNG-JIN
CPC分类号： H04W16/14 , H04W48/12 , H04W72/02 , H04W74/004 , H04W84/18
摘要： Provided are a beacon re-broadcasting apparatus, a beacon re-broadcasting method, and an initial access request method in a wireless network. In the re-broadcasting apparatus and method, a beacon frame including beacon information for communications in the wireless network and information on an echo beacon slot allocated for beacon re-broadcasting among time slots of a superframe is received from a management device for managing the wireless network in which a plurality of terminals communicated with each other through the superframe including time-divided time slots, and the beacon information is re-broadcasted during the echo beacon slot. Accordingly, the beacon information can be received in various environments, and the beacon information can be received to an adjacent network in addition to the corresponding network. Therefore, frequency resources can be shared and effectively used between networks, and convenience and efficiency in network operation can be maximized.
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