Timing compensation for distant base station antennas in telecom

Details Timing compensation for distant base station antennas in telecom Timing compensation for distant base station antennas in telecom

1998-04-07

2000-07-25

Eisenzopf, Reinhard J.

Telecommunications

Transmitter and receiver at separate stations

Having measuring, testing, or monitoring of system or part

455562, 455101, 370519, H04B 1700, H03C 702, H04J 306

Patent

active

060945621

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.

REFERENCES:
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patent: 5881058 (1999-03-01), Chen
patent: 5907813 (1999-05-01), Johnson, Jr. et al.
"Mobile Station Base Compatibility Standard for Dual-Mode Wideband Spread Spectrum Cellular System", TIA/EIA/IS-95-A, 1995.

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