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31.发明专利
公开(公告)号：DE102011004579A1
公开(公告)日：2012-05-10
申请号：DE102011004579
申请日：2011-02-23
Applicant: KOREA ELECTRONICS TELECOMM
Inventor： LEE IL-GU , CHOI IN-KYEONG , OH JONG-EE , CHOI EUN-YOUNG , LEE SOK-KYU , LEE YU-RO
Abstract: Ein Verfahren zum Senden von Daten durch ein Sendeendgerät zu einem Empfangsendgerät in einem drahtlosen Kommunikationssystem enthält: Erzeugen eines ersten Erfassungsfelds, das Symbole enthält, die unter Verwendung eines BPSK-Datentons moduliert werden; Erzeugen eines zweiten Erfassungsfelds, das Symbole enthält, die in der Weise moduliert werden, dass ein geradzahliger Hilfsträger und ein ungeradzahliger Hilfsträger eine Phasendifferenz von 90 Grad besitzen; Erzeugen eines Datenpakets, das das erste Erfassungsfeld, das zweite Erfassungsfeld und die Daten enthält; und Senden des Datenpakets.
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32.发明专利
公开(公告)号：CA2591273C
公开(公告)日：2012-05-08
申请号：CA2591273
申请日：2005-02-11
Applicant: KOREA ELECTRONICS TELECOMM
Inventor： YU HEE-JUNG , JEON TAEHYUN , KIM MYUNG-SOON , CHOI EUN-YOUNG , LEE SOK-KYU , LYU DEUK-SU
Abstract: In the present invention, data generated from a source unit are distributed to at least one bandwidth; the data distributed to the respective bandwidths are encoded in order to perform an error correction; the encoded data are distributed to at least one antenna; a subcarrier is allocated to the data distributed to the respective antennas, and an inverse Fourier transform is performed; a short preamble and a first long preamble corresponding to the subcarrier are generated; a signal symbol is generated according to a data transmit mode; and a frame is generated by adding a second long preamble between the signal symbol and a data field for the purpose of estimating a channel of a subcarrier which is not used.
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33.发明专利
公开(公告)号：CA2591273A1
公开(公告)日：2006-06-29
申请号：CA2591273
申请日：2005-02-11
Applicant: KOREA ELECTRONICS TELECOMM
Inventor： JEON TAEHYUN , YU HEE-JUNG , LYU DEUK-SU , KIM MYUNG-SOON , CHOI EUN-YOUNG , LEE SOK-KYU
Abstract: In the present invention, data generated from a source unit are distributed to at least one bandwidth; the data distributed to the respective bandwidths are encoded in order to perform an error correction; the encoded data are distributed to at least one antenna; a subcarrier is allocated to the data distributed to the respective antennas, and an inverse Fourier transform is performed; a short preamble and a first long preamble corresponding to the subcarrier are generated; a signal symbol is generated according to a data transmit mode; and a frame is generated by adding a second long preamble between the signal symbol and a data field for the purpose of estimating a channel of a subcarrier which is not used.
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公开(公告)号：BR112012022751A2
公开(公告)日：2016-07-19
申请号：BR112012022751
申请日：2011-03-11
Applicant: KOREA ELECTRONICS TELECOMM
Inventor： LEE IL-GU , LEE JAE-SEUNG , PARK JAEWOO , CHOI JEEYON , OH JONG-EE , CHEONG MINHO , LEE SOK-KYU , KIM YUN-JOO
IPC: H04B7/04
Abstract: método e equipamentos para transmitir e receber dados em rede local sem fio. a presente invenção refere-se a um método e equipamento para a transcepção de dados. um método em que um terminal de transmissão transmite dados para um terminal de recepção num sistema mimo de acordo com uma modalidade da presente invenção compreende as seguintes etapas: gerar um campo de dados contendo os dados; gerar um campo de sinais contendo informações sobre o campo de dados; gerar um quadro de dados que contém o campo de dados e o campo de sinais; e transmitir o quadro de dados para o terminal de recepção. de acordo com a presente invenção, um final do quadro sendo transmitido é precisamente notificado ao terminal de recepção num sistema de comunicações em que o quadro é transmitido usando mimo, descodificando, desse modo, o quadro de uma forma mais eficiente, no terminal de recepção.
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公开(公告)号：ES2535604T3
公开(公告)日：2015-05-13
申请号：ES11753658
申请日：2011-03-11
Applicant: KOREA ELECTRONICS TELECOMM
Inventor： OH JONG-EE , CHEONG MINHO , LEE SOK-KYU
Abstract: Un método para red de área local inalámbrica, comprendiendo el método, generar un campo de Señal de Muy Alto Rendimiento A (VHT-SIG-A) y un campo de Señal de Muy Alto Rendimiento B (VHT-SIG-B); y transmitir el campo VHT-SIG-A y el campo VHT-SIG-B a través de una banda de frecuencia a un receptor, siendo un ancho de banda de la banda de frecuencia un múltiplo de 20 MHz, el campo VHT-SIG-A incluye información común y se transmite repetitivamente a través de cada ancho de banda de 20 MHz de la banda de frecuencia en más de un símbolo de multiplexación por división ortogonal de frecuencia (OFDM), el campo VHT-SIG-B incluye un bloque de bits que representan información específica de usuario y se transmite a través del ancho de banda completo de la banda de frecuencia en únicamente un símbolo de OFDM que es posterior a los símbolos de OFDM en los que se transmite el campo VHT-SIG-A, el bloque de bits incluido en el campo VHT-SIG-B se repite un número de veces predeterminado de acuerdo con el ancho de banda de la banda de frecuencia, y caracterizado por que el número de veces predeterminado que va a repetirse aumenta a medida que el ancho de banda de la banda de frecuencia aumenta.
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Patent Agency Ranking
公开(公告)号：AU2010316045A1
公开(公告)日：2012-06-07
申请号：AU2010316045
申请日：2010-11-04
Applicant: KOREA ELECTRONICS TELECOMM
Inventor： CHOI JEEYON , PARK JAEWOO , LEE SOK-KYU
Abstract: The present invention relates to a technique relating to a method and apparatus for generating, transmitting, and receiving a data frame having a newly proposed format in a wireless communication system. According to the technique, the method for generating a data frame in a wireless communication system comprises the following steps: generating at least one first subframe; generating at least one second subframe; and generating a data frame including the first and second subframes, wherein the first and second subframes include length information of a MAC protocol data unit (MPDU) contained in the first and second subframes, and the length information of the MPDU contained in the second subframe is zero.
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公开(公告)号：CA2792925A1
公开(公告)日：2011-09-15
申请号：CA2792925
申请日：2011-03-11
Applicant: KOREA ELECTRONICS TELECOMM
Inventor： PARK JAEWOO , OH JONG-EE , LEE IL-GU , LEE SOK-KYU , CHEONG MINHO , CHOI JEEYON , LEE JAE-SEUNG , KIM YUN-JOO
IPC: H04B7/04
Abstract: The present invention relates to a method and apparatus for transceiving data. A method in which a transmitting terminal transmits data to a receiving terminal in a MIMO system according to one embodiment of the present invention comprises the following steps: generating a data field containing the data; generating a signal field containing information on the data field; generating a data frame containing the data field and the signal field; and transmitting the data frame to the receiving terminal. According to the present invention, an end of the frame being transmitted is accurately notified to the receiving terminal in a communication system in which the frame is transmitted using MIMO, thereby decoding the frame in a more efficient manner at the receiving terminal.
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公开(公告)号：AT411656T
公开(公告)日：2008-10-15
申请号：AT03730885
申请日：2003-06-02
Applicant: KOREA ELECTRONICS TELECOMM
Inventor： LEE SOK-KYU , KIM KWANG-SOON , CHANG KYUNG-HI
IPC: H04B7/06 , H04J11/00 , H04J20060101 , H04L1/06 , H04L5/02 , H04L5/06 , H04L27/26 , H04W16/02 , H04W16/28 , H04W72/04
Abstract: Disclosed are an adaptive pilot symbol assignment method that flexibly controls the number of transmit antennas according to each user's moving speed, channel status, or user request, and assigns proper pilot symbols in the downlink of an OFDMA (Orthogonal Frequency Division Multiplexing Access) based cellular system; and a sub-carrier allocation method for high-speed mobile that allocates some sub-carriers to assign proper pilot symbols for ultrahigh-speed mobile users, and the rest of the sub-carriers to the other users to assign proper pilot symbols to the users, on the assumption that the ultrahigh-speed mobile users have a traffic volume almost insignificant to the whole traffic volume.
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39.发明专利
公开(公告)号：AU2003241190A8
公开(公告)日：2004-07-09
申请号：AU2003241190
申请日：2003-06-02
Applicant: KOREA ELECTRONICS TELECOMM
Inventor： CHANG KYUNG-HI , LEE SOK-KYU , KIM KWANG-SOON
IPC: H04J11/00 , H04B7/06 , H04J20060101 , H04L1/06 , H04L5/02 , H04L5/06 , H04L27/26 , H04W16/02 , H04W16/28 , H04W72/04 , H04Q7/38
Abstract: Disclosed are an adaptive pilot symbol assignment method that flexibly controls the number of transmit antennas according to each user's moving speed, channel status, or user request, and assigns proper pilot symbols in the downlink of an OFDMA (Orthogonal Frequency Division Multiplexing Access) based cellular system; and a sub-carrier allocation method for high-speed mobile that allocates some sub-carriers to assign proper pilot symbols for ultrahigh-speed mobile users, and the rest of the sub-carriers to the other users to assign proper pilot symbols to the users, on the assumption that the ultrahigh-speed mobile users have a traffic volume almost insignificant to the whole traffic volume.
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40.发明专利
公开(公告)号：AU2003241190A1
公开(公告)日：2004-07-09
申请号：AU2003241190
申请日：2003-06-02
Applicant: KOREA ELECTRONICS TELECOMM
Inventor： LEE SOK-KYU , KIM KWANG-SOON , CHANG KYUNG-HI
IPC: H04J11/00 , H04B7/06 , H04J20060101 , H04L1/06 , H04L5/02 , H04L5/06 , H04L27/26 , H04W16/02 , H04W16/28 , H04W72/04
Abstract: Disclosed are an adaptive pilot symbol assignment method that flexibly controls the number of transmit antennas according to each user's moving speed, channel status, or user request, and assigns proper pilot symbols in the downlink of an OFDMA (Orthogonal Frequency Division Multiplexing Access) based cellular system; and a sub-carrier allocation method for high-speed mobile that allocates some sub-carriers to assign proper pilot symbols for ultrahigh-speed mobile users, and the rest of the sub-carriers to the other users to assign proper pilot symbols to the users, on the assumption that the ultrahigh-speed mobile users have a traffic volume almost insignificant to the whole traffic volume.
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