Invention Grant
US06754191B1 Method and apparatus for supplemental channel soft hand off in CDMA systems
有权
CDMA系统中补充信道软切换的方法和装置
- Patent Title: Method and apparatus for supplemental channel soft hand off in CDMA systems
- Patent Title (中): CDMA系统中补充信道软切换的方法和装置
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Application No.: US09599716Application Date: 2000-06-22
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Publication No.: US06754191B1Publication Date: 2004-06-22
- Inventor: David Paranchych , Geng Wu , Ashvin Chheda
- Applicant: David Paranchych , Geng Wu , Ashvin Chheda
- Main IPC: H04Q700
- IPC: H04Q700

Abstract:
A system determines an optimal set of base transceiver sets that are to transmit data over supplemental channels to a mobile station. A mobile station transmits periodic signal strength measurement message to rank the pilot signal strengths being received from the plurality of base station transceiver systems. Whenever the number of fundamental channel sectors that are active exceeds the maximum number of active supplemental channel sectors, periodic pilot strength measurement messages are transmitted by the mobile station. To improve resource usage, periodic pilot strength measurement messages are not transmitted as often as required to insure that the active supplemental channel sectors are the ones from which the strongest signals are received by the mobile station. Rather, a combination of periodic pilot strength measurement messages and calculated reverse link signal strength over spectral noise density values are used.
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