Telecommunications – Radiotelephone system – Zoned or cellular telephone system
Reexamination Certificate
2005-07-12
2005-07-12
Beamer, Temica M. (Department: 2681)
Telecommunications
Radiotelephone system
Zoned or cellular telephone system
C455S440000, C455S067110, C455S226100, C370S332000
Reexamination Certificate
active
06917808
ABSTRACT:
An improved inter-frequency handoff trigger in a wireless communication system is disclosed. In an embodiment of the invention, a particular mobile station transmits a pilot strength measurement message to the base station. The base station subsequently determines the strongest border pilot and the strongest interior pilot. The base station evaluates whether the border sector is stronger than the interior sector. If the border sector is stronger than the interior sector, this would indicate that the mobile station is out of the coverage area of the interior pilot. The base station subsequently determines the transmitted pilot energy to total transmit power of the pilot signal associated with the border pilot. The transmitted pilot energy to total transmit power of the border pilot is then compared to an aggregate value of a set of pilot energy signals received at the mobile station and if the difference exceeds a threshold value, the handoff of the mobile station to the border sector base station is initiated.
REFERENCES:
patent: 5999816 (1999-12-01), Tiedemann, Jr. et al.
patent: 6295452 (2001-09-01), Choi
patent: 6304755 (2001-10-01), Tiedemann, Jr. et al.
patent: 6321089 (2001-11-01), Han
patent: 6393276 (2002-05-01), Vanghi
patent: 6546248 (2003-04-01), Jou et al.
patent: 6553064 (2003-04-01), Chen et al.
patent: 6587446 (2003-07-01), Sarkar et al.
Beamer Temica M.
Lucent Technologies - Inc.
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