System and method for using geographical location to determine when to exit an existing wireless communications coverage network
First Claim
1. A method for determining when to exit an existing coverage network in a wireless communications device, the method comprising the steps of:
- determining a threshold boundary line;
partitioning an area into a first zone and a second zone, the area including at least a portion of a first coverage area for the existing coverage network and at least a portion of a second coverage area for a second coverage network proximate the existing coverage network, the first zone proximate a first side of the threshold boundary line oriented toward a geographical center for the existing coverage network and the second zone proximate a second side of the threshold boundary line;
compiling a history of geographical location data of the wireless communications device, comprising the steps of;
supplying the wireless communications device a plurality of sample points comprising geographical positions of the wireless communications device;
measuring a position of each sample point of the plurality of sample points with respect to the threshold boundary line; and
,maintaining a running sum of the measured position of the each sample point, wherein maintaining the running sum comprises the steps of;
decrementing the running sum for the measured position of the each sample point in the first zone; and
,incrementing the running sum for the measured position of the each sample point in the second zone; and
comparing the running sum to a terminal value; and
exiting the existing coverage network based upon the compiled history of geographical location data.
3 Assignments
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Accused Products
Abstract
A system and method are presented for determining when to exit an existing wireless communications coverage network. The method samples the device geographical position, determines a threshold boundary line, measures the position of each sample point with respect to the threshold boundary line, and, beginning at a predetermined initial value, maintains a running sum in response to measuring position. The method uses the threshold boundary line to partition a coverage area for the existing coverage network into first and second zones. Then, the method decrements the running sum for sample point positions in the first zone and increments the running sum sample point positions in the second zone. The method exits the existing coverage network when the running sum is greater than or equal to a predetermined terminal value and then resets the running sum to the predetermined initial value.
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Citations
24 Claims
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1. A method for determining when to exit an existing coverage network in a wireless communications device, the method comprising the steps of:
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determining a threshold boundary line; partitioning an area into a first zone and a second zone, the area including at least a portion of a first coverage area for the existing coverage network and at least a portion of a second coverage area for a second coverage network proximate the existing coverage network, the first zone proximate a first side of the threshold boundary line oriented toward a geographical center for the existing coverage network and the second zone proximate a second side of the threshold boundary line; compiling a history of geographical location data of the wireless communications device, comprising the steps of; supplying the wireless communications device a plurality of sample points comprising geographical positions of the wireless communications device; measuring a position of each sample point of the plurality of sample points with respect to the threshold boundary line; and
,maintaining a running sum of the measured position of the each sample point, wherein maintaining the running sum comprises the steps of; decrementing the running sum for the measured position of the each sample point in the first zone; and
,incrementing the running sum for the measured position of the each sample point in the second zone; and comparing the running sum to a terminal value; and exiting the existing coverage network based upon the compiled history of geographical location data. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. In a wireless communications device, a system for determining when to exit an existing wireless communications coverage network, the system comprising:
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a locator having a locator output for outputting device geographical sample positions; and
,a calculator connected to the locator output, the calculator utilizing a history of the device geographical sample positions for supplying an exit control signal, the calculator comprising; a comparison circuit connected to the locator output, the comparison circuit selecting a first threshold boundary line and measuring the difference between each device geographical sample position and the first threshold boundary line, the comparison circuit outputting a decrement control signal or an increment control signals in response to the measurement; a counting circuit for receiving the decrement control signal or the increment control signal and for performing a mathematical function responsive to accepting the decrement and increment control signals and comparing a mathematical function result to a predetermined terminal value the counting circuit supplying the exit control signal in response to the comparison. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
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Specification