Fast reacquisition after long sleep
First Claim
Patent Images
1. A mobile station comprising:
- a receiver for receiving a plurality of signals; and
a processor which controls the receiver and analyzes the plurality of signals, the processor configured to activate the receiver prior to a paging slot and determine if a handoff is desired based on the plurality of signals, wherein the processor deactivates the receiver prior to the paging slot if no handoff is desired.
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Abstract
The mobile station is in the sleep mode until just prior to a designated slot. Upon wakeup, the mobile station ensures a link is maintained with the network by measuring the strength of several pilots. If a neighbor pilot is stronger than the current pilot, a handoff is performed. After handoff, the Control Channel Capsule (CCC) may be demodulated by the mobile station to obtain new overhead information, such as neighbor pilots. If no handoff is performed, the reacquisition slew for the current pilot is measured and fed back to the sleep controller to determine the next wake-up time. The mobile station then returns to sleep mode.
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Citations
26 Claims
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1. A mobile station comprising:
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a receiver for receiving a plurality of signals; and
a processor which controls the receiver and analyzes the plurality of signals, the processor configured to activate the receiver prior to a paging slot and determine if a handoff is desired based on the plurality of signals, wherein the processor deactivates the receiver prior to the paging slot if no handoff is desired. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8)
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9. A method of fast reacquisition comprising:
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receiving a plurality of signals prior to a designated time;
analyzing the plurality of signals to determine the presence of a triggering event; and
deactivating a receiver prior to the designated time if the triggering event is not present. - View Dependent Claims (10, 11, 12, 13, 14)
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15. A wireless communication system comprising:
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a plurality of base stations, each of the plurality of base stations transmitting a pilot signal; and
a mobile station which activates prior to a paging slot to receive and analyze the pilot signals to determine if a handoff is desired, wherein the mobile station deactivates prior to the paging slot if no handoff is desired. - View Dependent Claims (16, 17, 18, 19, 20)
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21. A mobile station comprising:
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means for receiving a plurality of signals prior to a designated time;
means for analyzing the plurality of signals to determine the presence of a triggering event; and
means for deactivating a receiver prior to the designated time if the triggering event is not present. - View Dependent Claims (22, 23, 24, 25, 26)
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Specification