发明授权
US5917811A Method and apparatus for measurement directed hard handoff in a CDMA
system
失效
用于在CDMA系统中进行硬切换的测量的方法和装置
- 专利标题: Method and apparatus for measurement directed hard handoff in a CDMA system
- 专利标题(中): 用于在CDMA系统中进行硬切换的测量的方法和装置
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申请号: US652726申请日: 1996-05-22
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公开(公告)号: US5917811A公开(公告)日: 1999-06-29
- 发明人: Lindsay A. Weaver, Jr. , Toni Lee Holcman , David B. Munsinger , Noam A. Ziv , Kenneth R. Baker
- 申请人: Lindsay A. Weaver, Jr. , Toni Lee Holcman , David B. Munsinger , Noam A. Ziv , Kenneth R. Baker
- 申请人地址: CA San Diego
- 专利权人: Qualcomm Incorporated
- 当前专利权人: Qualcomm Incorporated
- 当前专利权人地址: CA San Diego
- 主分类号: H04W24/02
- IPC分类号: H04W24/02 ; H04W36/12 ; H04W36/14 ; H04Q7/22
摘要:
In a communications network, a network user communicates using a remote unit with another user via at least one base station. The network is comprised of first and second mobile switching control stations respectively controlling communications through a first set of base stations including a first base station and through a second set of base stations including a second base station. To direct communications between the remote unit and the first and second base stations the first base station measures a round trip delay of an active communication signal between the first base station and the remote unit. The remote unit measures a first phase offset of a pilot signal received from a first candidate base station and reports it to the first mobile switching center via the first base station. The first mobile switching center calculates a candidate round trip delay between the remote unit and the first candidate base station based on the first phase offset and the round trip delay of the active communication signal. A active communication control unit accesses a measurement directed hard handoff table to determine a location of the remote unit based on the round trip delay corresponding to the first active communication signal and the candidate round trip delay.
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