发明公开
EP1855501A1 Method and system for performing a handoff in a wireless communication system, such as a hard handoff 有权
用于在无线通信系统中执行越区切换的方法和系统,例如硬越区切换

  • 专利标题: Method and system for performing a handoff in a wireless communication system, such as a hard handoff
  • 专利标题(中): 用于在无线通信系统中执行越区切换的方法和系统,例如硬越区切换
  • 申请号: EP07016648.3
    申请日: 1999-02-12
  • 公开(公告)号: EP1855501A1
    公开(公告)日: 2007-11-14
  • 发明人: Odenwalder, Joseph P.
  • 申请人: QUALCOMM Incorporated
  • 申请人地址: 5775 Morehouse Drive San Diego CA 92121-1714 US
  • 专利权人: QUALCOMM Incorporated
  • 当前专利权人: QUALCOMM Incorporated
  • 当前专利权人地址: 5775 Morehouse Drive San Diego CA 92121-1714 US
  • 代理机构: Carstens, Dirk Wilhelm
  • 优先权: US74733P 19980213; US248701 19990211; US248700 19990211
  • 主分类号: H04Q7/38
  • IPC分类号: H04Q7/38
Method and system for performing a handoff in a wireless communication system, such as a hard handoff
摘要:
A method and apparatus for minimizing disruption during a frequency search excursion to a target frequency. The method may be preformed as part of inter-frequency hard-handoff between cells on different RF CDMA channels. The method minimizes search times by tuning a selected mobile station (102) to a target frequency and collecting chip samples which are then stored in a buffer (207). Pilot searches and pilot strength measurements are not performed while on the target frequency. The selected mobile station (102) is tuned back to the original frequency and simultaneously resumes reception of forward link and transmission of reverse link communications. The chip samples collected on the target frequency are processed to calculate pilot strength. In another embodiment, the method minimizes disruption of service on the current frequency during the frequency search by increasing the amount of power allocated to other symbols contained in a data frame impacted by the search excursion. This power increase is a function of search excursion time.
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