Timing compensation for distant base station antennas in telecommunication systems
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United States of America Patent
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Jul 25, 2000
Grant Date -
N/A
app pub date -
Apr 7, 1998
filing date -
Apr 7, 1998
priority date (Note) -
In Force
status (Latency Note)
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Abstract
Each reverse-link signal received by a base station from a mobile unit is advanced by a specified receive delay corresponding to the reverse-link delay between the base station and its antenna. In a configuration in which the base station has more than one antenna, the receive delay is preferably based on empirical measurements for the antenna having the smallest reverse-link delay. In a configuration in which the base station has more than one sector, a different receive delay is preferably specified for each different sector. By compensating for reverse-link delay, the delay budget can be greatly increased, especially when the antenna is far from the base station. In addition, for applications in which the search window begins at about GPS time 0, the base station more efficiently utilizes its processing capacity by reducing the portion of the base station search window within which no reverse-link signal can be present.
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