Method and apparatus for controlling scanning of a subscriber unit
First Claim
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1. A method for controlling scanning of a subscriber unit communicating with a first wireless system, comprising the steps of:
- determining a location at which the subscriber unit is positioned;
calculating a distance between said location and a second wireless system preferred by the subscriber unit;
deciding whether the subscriber unit will scan for a signal from the second wireless system, based upon said distance; and
in response to deciding to scan, selecting a scanning rate based upon said distance, such that more frequent scans will occur as the distance becomes shorter.
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Abstract
A location is determined (402) at which a subscriber unit (122, 300) communicating with a first wireless system is positioned. A distance between the location and a second wireless system preferred by the subscriber unit is calculated (404), and, based upon the distance, it is decided (408) whether the subscriber unit will scan for a signal from the second wireless system.
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Citations
17 Claims
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1. A method for controlling scanning of a subscriber unit communicating with a first wireless system, comprising the steps of:
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determining a location at which the subscriber unit is positioned; calculating a distance between said location and a second wireless system preferred by the subscriber unit; deciding whether the subscriber unit will scan for a signal from the second wireless system, based upon said distance; and in response to deciding to scan, selecting a scanning rate based upon said distance, such that more frequent scans will occur as the distance becomes shorter. - View Dependent Claims (2, 3, 4, 5, 6)
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7. A subscriber unit communicating with a first wireless system for controlling scanning, the subscriber unit comprising:
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a receiver for receiving the first wireless system; and a processing system coupled to the receiver for controlling the receiver, the processing system comprising a memory, wherein the processing system is programmed to; determine a location at which the subscriber unit is positioned; calculate a distance between said location and a second wireless system preferred by the subscriber unit; decide whether the subscriber unit will scan for a signal from the second wireless system, based upon said distance; and in response to deciding to scan, select a scanning rate based upon said distance, such that more frequent scans will occur as the distance becomes shorter. - View Dependent Claims (8, 9, 10, 11, 12)
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13. A controller in a first wireless system communicating with a subscriber unit utilizing two-way communication, the controller for controlling scanning of the subscriber unit, the controller comprising;
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a base station interface for cooperating with a base station to provide two-way communications with the subscriber unit; and a processing system coupled to the base station interface for controlling the base station interface, the processing system comprising a memory, wherein the processing system is programmed to; receive from the subscriber unit a location at which the subscriber unit is positioned; calculate a distance between said location and a second wireless system preferred by the subscriber unit; make a decision as to whether the subscriber unit will scan for a signal from the second wireless system, based upon said distance; in response to deciding the subscriber unit will scan, selecting a scanning rate based upon said distance, such that more frequent scans will occur as the distance becomes shorter; and communicate the decision and the scanning rate to the subscriber unit. - View Dependent Claims (14, 15, 16, 17)
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Specification