发明授权
US07430193B2 Method and apparatus for embodying and synchronizing downlink signal in mobile communication system and method for searching cell using the same
有权
用于在移动通信系统中实现和同步下行链路信号的方法和装置及使用其的小区搜索方法
- 专利标题： Method and apparatus for embodying and synchronizing downlink signal in mobile communication system and method for searching cell using the same
- 专利标题（中）： 用于在移动通信系统中实现和同步下行链路信号的方法和装置及使用其的小区搜索方法
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申请号： US10536593申请日： 2002-11-29
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公开(公告)号： US07430193B2公开(公告)日： 2008-09-30
- 发明人: Kwang-Soon Kim , Kyung-Hi Chang , Yong-Soo Cho , Tae-Gon Kim
- 申请人： Kwang-Soon Kim , Kyung-Hi Chang , Yong-Soo Cho , Tae-Gon Kim
- 申请人地址： KR Daejeon KR Seoul
- 专利权人： Electronics and Telecommunications Research Institute,Chung-Ang University
- 当前专利权人： Electronics and Telecommunications Research Institute,Chung-Ang University
- 当前专利权人地址： KR Daejeon KR Seoul
- 代理机构： Ladas & Parry LLP
- 优先权： KR10-2002-0073789 20021126
- 国际申请： PCT/KR02/02241 WO 20021129
- 国际公布： WO2004/049618 WO 20040610
- 主分类号： H04B7/00
- IPC分类号： H04B7/00 ; H04B7/216 ; H04B7/212 ; H04Q7/00 ; H04Q7/24 ; H04J3/00 ; H04J1/00 ; H04J3/06
摘要：
In an OFDMA-based cellular system, a frame of a downlink signal includes a common slot and traffic slots. The common slot includes a synchronization preamble and a cell search preamble. The synchronization preamble has a structure for synchronizing time and frequency, and the cell search preamble has a cell search structure. The traffic slot includes pilot symbols provided on the time and frequency axes. A cyclic prefix is used to estimate initial symbol synchronization, and the initial symbol synchronization and the synchronization preamble are used to synchronize the frame. The synchronization frame and the cell search preamble are used to estimate time and frequency synchronization. The cell search preamble is used to search cells. When the initial synchronization is performed, the cyclic prefix is used to track the frequency, the synchronization preamble is used to track symbol synchronization, and the cell search preamble is used to track fine frequency synchronization.