Handoff method for indoor cellular phone system
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United States of America Patent
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-
Sep 30, 1997
Grant Date -
N/A
app pub date -
Feb 17, 1994
filing date -
Feb 17, 1994
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A method, system, and apparatus for communication and handoff in a cellular phone system in which candidate cell units which can support communication with a mobile phone are identified. Neighbor cell units which have recently supported communication with the mobile phone are also identified. Handoff threshold values for each candidate cell are determined based on the existing communication quality and whether the candidate cell is also a neighbor cell such that the handoff threshold is higher when the candidate cell is a neighbor cell. A decision to handoff is made when the improvement offered by candidate cell is greater than the handoff threshold.
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