MOBILE TERMINALS AND METHODS FOR REGULATING POWER-ON/OFF OF A GPS POSITIONING CIRCUIT
First Claim
1. A method for determining location of a mobile terminal, comprising:
- repetitively switching power-on and power-off to a GPS receiver circuit which determines location of the mobile terminal using GPS signals; and
regulating the power-on to power-off duty cycle of the GPS receiver circuit in response to distance that the mobile terminal has moved from a previously determined location.
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Accused Products
Abstract
A method for determining location of a mobile terminal includes repetitively switching power-on and power-off to a GPS receiver circuit which determines location of the mobile terminal using GPS signals. The power-on to power-off duty cycle of the GPS receiver circuit is regulated in response to distance that the mobile terminal has moved from a previously determined location. The power-on to power-off duty cycle can be regulated in response to identifying GPS isolation, in response to an acceleration-determined distance from previous GPS-determine location, an acceleration-determined velocity of the mobile terminal, availability of position assistance information from a cellular system, presence/absence of signals from a WLAN/Bluetooth device, and/or detection of a new cellular base station ID.
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Citations
23 Claims
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1. A method for determining location of a mobile terminal, comprising:
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repetitively switching power-on and power-off to a GPS receiver circuit which determines location of the mobile terminal using GPS signals; and regulating the power-on to power-off duty cycle of the GPS receiver circuit in response to distance that the mobile terminal has moved from a previously determined location. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12)
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13. A mobile terminal comprising:
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a GPS receiver circuit configured to determine location of the mobile terminal using GPS signals; and a controller circuit configured to repetitively switch power-on and power-off to the GPS receiver circuit, and to regulate the power-on to power-off duty cycle of the GPS receiver circuit in response to distance that the mobile terminal has moved from a previously determined location. - View Dependent Claims (14, 15, 16, 17, 18, 19, 20)
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21. A mobile terminal comprising:
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a GPS receiver circuit configured to determine location of the mobile terminal using GPS signals; and a controller circuit configured to regulate power supplied to the GPS receiver circuit in response to distance that the mobile terminal has moved from a location previously determined using GPS signals. - View Dependent Claims (22, 23)
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Specification