Method for transmitting a pilot signal, and a cellular radio system
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United States of America Patent
Stats
-
Oct 12, 1999
Grant Date -
N/A
app pub date -
Jan 24, 1997
filing date -
May 24, 1995
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
In a cellular radio system having in each of a plurality of cells at least one base station communicating with mobile stations located within its area, the base stations each transmit a pilot signal to the mobile stations. At least one of the base stations, transmits to the mobile stations by transmitting a pilot signal by using a rather narrow changing antenna beam. The angle of the greatest gain of the antenna beam is controlled in such a way that the antenna beam sweeps the cell area. The mobile stations can use the pilot signal in the identification of a base station, and as an indicator of a need for handover, without the continuous reception of the pilot signal in the subscriber equipment, and without a need to transmit the pilot signal with a higher transmission power than the other signals.
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