发明授权
- 专利标题: Method of and apparatus for pilot channel acquisition
- 专利标题(中): 导频信道采集方法及装置
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申请号: US706150申请日: 1996-08-30
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公开(公告)号: US5889768A公开(公告)日: 1999-03-30
- 发明人: Brian D. Storm , David J. Krause
- 申请人: Brian D. Storm , David J. Krause
- 申请人地址: IL Schaumburg
- 专利权人: Motorola, Inc.
- 当前专利权人: Motorola, Inc.
- 当前专利权人地址: IL Schaumburg
- 主分类号: H04B1/7075
- IPC分类号: H04B1/7075 ; H04B1/7077 ; H04B1/7117 ; H04B7/216 ; H04W36/30 ; H04W36/36 ; H04W72/08
摘要:
A wireless communication device 100 acquires a pilot channel before an assigned slot when the wireless communication device is operating in the slotted mode of a CDMA system. The wireless communication device comprises a searcher receiver 107 that determines the short-term average pilot strength of active and neighbor pilot channels. Finger receivers 107 determine the long-term average pilot strength of the active and neighbor pilot channels. A logic and control circuit 113 assigns the finger receivers to the pilot channels according to their short-term average pilot strength, determines if the long-term average pilot strength of a neighbor channel is greater than the active pilot channel's pilot strength, and determines to hand off to the neighbor pilot channel with the greater long-term average pilot strength. Moreover, an early detection correlation length can be dynamically adjusted according to the pilot strength of the active pilot channel to shorten the pilot acquisition process.
公开/授权文献
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