Time synchronization of radio networks
First Claim
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1. A method for adjusting the clock of a base transceiver station comprising the steps of:
- relating the base transceiver station'"'"'s current time to a common time reference;
providing the base transceiver station with an offset based on the relation; and
adjusting the base transceiver station'"'"'s clock based on the offset.
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Abstract
Methods and apparatus are provided for maintaining an accurate clock in a base transceiver station. Location measurement units which are used for determining the location of mobile stations is used to provide the current global positioning satellite (GPS) time to the base transceiver station. The base transceiver station can then adjust its own clock based upon the current GPS time. When the message in a GPS signal cannot be decoded the location measurement unit can determine the current GPS time by decoding the chip sequence of the GPS signal.
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Citations
34 Claims
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1. A method for adjusting the clock of a base transceiver station comprising the steps of:
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relating the base transceiver station'"'"'s current time to a common time reference;
providing the base transceiver station with an offset based on the relation; and
adjusting the base transceiver station'"'"'s clock based on the offset. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A system comprising:
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means for relating the base transceiver station'"'"'s current time to a common time reference;
means for providing the base transceiver station with an offset based on the relation; and
means for adjusting the base transceiver station'"'"'s clock based on the offset. - View Dependent Claims (16, 17, 18, 19, 20, 21, 22, 23, 24, 25, 26, 27, 28)
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29. A radio network comprising:
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a base transceiver station including a clock;
a location measurement unit;
wherein the location measurement station provides information regarding a current common time reference and wherein the clock is adjusted based upon the information. - View Dependent Claims (30, 31, 32, 33, 34)
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Specification