Method and apparatus for identifying and acquiring preferred wireless communications systems
First Claim
1. In a mobile station adapted for slotted operation on a current wireless communications system, a method for acquiring a wireless communications system comprising the steps of:
- during a slot-off period, analyzing a signal received on a channel associated with a candidate communications system;
determining, based on the analysis of the received signal, whether the candidate communications system is likely to be available for acquisition by the mobile station; and
attempting to acquire the candidate communications system if it is determined that the candidate communications system is likely to be available for acquisition.
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Accused Products
Abstract
In a mobile station having an acquired wireless communications system, the mobile station performs preliminary searches for more desirable wireless communications systems in between paging channel and quick paging channel assigned slots, while successfully monitoring the mobile station'"'"'s assigned slots. The mobile station then analyzes the preliminary search results and attempts to acquire the more desirable wireless communications systems that meets preliminary search criteria. The mobile station includes a communications transceiver that facilitates wireless communications with a local base station and processing circuitry adapted to control a slotted operation mode of the mobile station. The processing circuitry is adapted to instruct the communications transceiver to listen for incoming messages from the acquired communications system during slot modes and listen for candidate communications systems during slot-off modes.
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Citations
22 Claims
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1. In a mobile station adapted for slotted operation on a current wireless communications system, a method for acquiring a wireless communications system comprising the steps of:
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during a slot-off period, analyzing a signal received on a channel associated with a candidate communications system; determining, based on the analysis of the received signal, whether the candidate communications system is likely to be available for acquisition by the mobile station; and attempting to acquire the candidate communications system if it is determined that the candidate communications system is likely to be available for acquisition. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A mobile station comprising:
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a communications transceiver that facilitates wireless communications with a base station of a current wireless communications system; a processing circuitry coupled to the communications transceiver, the processing circuitry controlling a slotted operation mode of the mobile station, the slotted operation mode including; a slot period during which the processing circuitry instructs the communications transceiver to listen for incoming messages from the current communications system, and a slot-off period during which the processing circuitry instructs the communications transceiver to listen for a candidate communications system. - View Dependent Claims (14, 15, 16)
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17. In a wireless device, an integrated circuit comprising:
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a control processor including logic for controlling a slotted operation mode of the wireless device, the slotted operation mode including; a slot period during which the control processor instructs the wireless device to listen for incoming messages from a current wireless communications system, and a slot-off period during which the control processor instructs the wireless device to enter a sleep mode; a system determination unit coupled to the control processor, the system determination adapted to identify candidate communications systems in a current geographic region of the wireless device that are more desirable than the current wireless communications system; and a searcher coupled to the control processor and system determination unit, the searcher adapted to analyze a signal quality of at least one of the identified more desirable communications systems, wherein the measurement of each more desirable communications system is performed during a single slot-off period. - View Dependent Claims (18, 19, 20, 21, 22)
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Specification