Multi-frequency pilot beacon for CDMA systems
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United States of America Patent
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-
Apr 29, 2003
Grant Date -
N/A
app pub date -
May 27, 1999
filing date -
May 27, 1999
priority date (Note) -
In Force
status (Latency Note)
Importance
Abstract
A multi-frequency pilot beacon adapted to a CDMA system using at least two different carrier frequencies, F1 and F2, for supplying PN sequences at these frequencies. The pilot beacon has a pseudorandom noise generator for supplying a pseudorandom noise sequence PN and a frequency conversion mechanism for converting the PN sequence to a first pilot beacon centered at the first CDMA carrier F1 and a second pilot beacon centered at the second CDMA carrier F2. The multi-frequency pilot beacon can be provided at a base station of a given cell to transmit the pilot beacons within that cell and the base station antenna can be used for transmitting the pilot beacons in this embodiment. Alternatively, multi-frequency pilot beacons can be provided wherever necessary within the CDMA system. The multi-frequency pilot beacon is useful in frequency hand-off operations and gathering information about cellular users in the CDMA system
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