发明申请
- 专利标题: METHOD AND SYSTEM FOR USING THE SYNCHRONIZATION CHANNEL TO OBTAIN MEASUREMENTS IN A CELLULAR COMMUNICATIONS SYSTEM
- 专利标题(中): 使用同步通道在细胞通信系统中获取测量的方法和系统
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申请号: US11566508申请日: 2006-12-04
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公开(公告)号: US20070297324A1公开(公告)日: 2007-12-27
- 发明人: Bengt Lindoff , Anders Wallen
- 申请人: Bengt Lindoff , Anders Wallen
- 主分类号: H04J11/00
- IPC分类号: H04J11/00
摘要:
A method and apparatus that utilizes the synchronization channel (SCH) by the user equipment (UE) to obtain time synchronization information and to perform cell search. In order to perform the SCH detection, only a correlation between the known SCH signal and the received sequence is needed, hence the FFT is not involved in the synchronization step. Typically the SCH and pilot symbols are transmitted with a constant power which is the same for all base stations. Hence, based on the serving cell (SC) SCH and pilot symbols, the power relation between these signals is estimated and the ratio applied when performing time synchronization to other cells (i.e. correlation the received sequence with the SCH from that particular NC) to estimate the pilot signal strength for the NB cell.
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