发明名称 |
Method and apparatus for the detection of common control channel in an OFDMA cellular communication system |
摘要 |
Improvement of reception downlink common control channels in an Orthogonal Frequency Division Multiplexing (OFDM)-based cellular wireless communication system is provided by User Equipment (UE) using a downlink synchronization channel transmitted in an adjacent OFDM symbol as a pilot channel for channel estimation upon common control channel demodulation. When providing both unicast and multicast data services, OFDM symbol transmitting multicast data generally has a longer Cyclic Prefix (CP) than an OFDM symbol for unicast data than a signal frequency network. Therefore, length of CPs of OFDM symbols belonging to each subframe may change depending on whether multimedia data is transmitted. Although a UE does not recognize the length of a CP applied to a subframe in which a common control and a synchronization channel are transmitted, the UE can use a downlink synchronization channel as a channel estimation pilot to demodulate the common control channel.
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申请公布号 |
EP1850548(A1) |
申请公布日期 |
2007.10.31 |
申请号 |
EP20070008570 |
申请日期 |
2007.04.26 |
申请人 |
SAMSUNG ELECTRONICS CO., LTD. |
发明人 |
CHO, JOON-YOUNG;LEE, JU-HO;KWAK, YONG-JUN |
分类号 |
H04L27/26 |
主分类号 |
H04L27/26 |
代理机构 |
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主权项 |
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地址 |
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