Method and system for synchronizing a clock for an adjacent network to a clock for an overlay network
First Claim
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1. A method of synchronizing a clock for an adjacent network (AN) to a clock for an overlay network (ON), comprising:
- determining whether a wireless access point for the AN is providing service to at least one mobile station in a service area of the wireless access point;
in response to determining that the wireless access point is not providing service to at least one mobile station;
determining that the AN is in an idle mode and able to receive an ON clock signal from the ON;
extracting the ON clock signal from an outgoing signal transmitted wirelessly from the ON;
synchronizing the AN clock to the ON clock based on the extracted ON clock signal;
extracting a system time from the outgoing signal;
determining whether location information of the ON is available; and
resynchronizing the AN clock to the ON clock based on at least the extracted system time and the location information in response to determining that the location information of the ON is available.
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Abstract
A method of synchronizing a clock for an adjacent network (AN) to a clock for an overlay network (ON) is provided. The method includes extracting an ON clock signal from an outgoing signal transmitted from the overlay network. The AN clock is synchronized to the ON clock based on the extracted ON clock signal.
203 Citations
20 Claims
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1. A method of synchronizing a clock for an adjacent network (AN) to a clock for an overlay network (ON), comprising:
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determining whether a wireless access point for the AN is providing service to at least one mobile station in a service area of the wireless access point; in response to determining that the wireless access point is not providing service to at least one mobile station; determining that the AN is in an idle mode and able to receive an ON clock signal from the ON; extracting the ON clock signal from an outgoing signal transmitted wirelessly from the ON; synchronizing the AN clock to the ON clock based on the extracted ON clock signal; extracting a system time from the outgoing signal; determining whether location information of the ON is available; and resynchronizing the AN clock to the ON clock based on at least the extracted system time and the location information in response to determining that the location information of the ON is available. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. A method of synchronizing a clock for an adjacent network (AN) to a clock for an overlay network (ON), comprising:
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determining whether a wireless access point for the AN is providing service to at least one mobile station in a service area of the wireless access point; in response to determining that the wireless access point is not providing service to at least one mobile station; determining that the AN is in an idle mode; synchronizing the AN clock to the ON clock based on an ON clock signal extracted from an outgoing signal transmitted wirelessly from the ON; and resynchronizing the AN clock to the ON clock based on at least an extracted time and location information when the location information of the ON is available; and in response to determining that the wireless access point is providing service to at least one mobile station; determining that the AN is in a traffic mode; requesting a plurality of timing reports at a specified frequency from the at least one mobile station; receiving the timing reports from the at least one mobile station at the specified frequency; and for each timing report received from the at least one mobile station, determining whether to resynchronize the AN clock to the ON clock based on the received timing report. - View Dependent Claims (11, 12, 13)
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14. An apparatus configured to synchronize a clock for an adjacent network (AN) to a clock for an overlay network (ON), the apparatus comprising:
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a clock synchronizer configured to determine whether a wireless access point for the AN is providing service to at least one mobile station in a service area of the wireless access point, and in response to determining that the wireless access point is not providing service to at least one mobile station, determine that the AN is in an idle mode and able to receive an ON clock signal from the ON, extract the ON clock signal from an outgoing signal transmitted wirelessly from the ON, and synchronize the AN clock to the ON clock based on the extracted ON clock signal; a system time extractor configured to extract a system time from the outgoing signal when the AN is in the idle mode; and a clock resynchronizer configured to resynchronize the AN clock to the ON clock based on at least the extracted system time and location information of the ON when the AN is in the idle mode and the location information of the ON is available. - View Dependent Claims (15, 16, 17, 18, 19, 20)
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Specification