发明名称 |
METHOD AND APPARATUS FOR TRANSMITTING BY USING TRANSMIT DIVERSITY AT DFT SPREAD OFDMA |
摘要 |
<p>The present invention relates to a packet data transmission method in an OFDMA system and an apparatus thereof. The present invention provides a user packet data transmission method including generating a RACH burst for channel information estimation, selecting a first antenna among a plurality of antennas, transmitting the RACH burst through the first antenna to a base station, receiving a data transmission acceptance signal from the base station, in response to the RACH burst, transmitting user packet data through the first antenna when receiving a signal indicating that the data transmission is allowed, and selecting a second antenna that is difference from the first antenna and transmitting a RACH burst through the second antenna when receiving a signal indicating that the data transmission is not allowed, and a transmitting apparatus of a mobile station having the plurality of antennas. According to the present invention, the RACH burst and user packet data are transmitted by using a mobile station having a plurality of antennas in an LTE-applied OFDMA system, and therefore data transmission can be performed with a wide bandwidth and high data rate and a deep fading period that may occur during the data transmission can be reduced, thereby preventing call dropping and improving data transmission performance.</p> |
申请公布号 |
KR20070052654(A) |
申请公布日期 |
2007.05.22 |
申请号 |
KR20060091405 |
申请日期 |
2006.09.20 |
申请人 |
ELECTRONICS AND TELECOMMUNICATIONS RESEARCH INSTITUTE |
发明人 |
KIM, IL GYU;PARK, HYEONG GEUN;CHANG, KAP SEOK;KIM, YOUNG HOON;BANG, SEUNG CHAN;SHIN, EUN JEONG;JWA, HYE KYUNG;LEE, MOON SIK |
分类号 |
H04L27/26;H04B7/04;H04J11/00 |
主分类号 |
H04L27/26 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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