Communications protocol for mobile device
First Claim
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1. A method of operating a communication device having a transmitting device with an antenna for sending wireless signals which is in proximity to a GPS signal receiver with an antenna for periodically receiving external signals for GPS position determination comprising:
- putting the transmitting device into a sleep mode of predetermined time duration in which it does not transmit wireless signals during a time period in which the GPS signal receiver is receiving external signals for GPS position determination;
checking whether the GPS signal receiver has obtained a position fix from the external signals for GPS position determination; and
reactivating the transmitting device to transmit wireless signals only when both of the following conditions are met;
the predetermined time duration for the sleep mode has lapsed, andthe GPS signal receiver has obtained a position fix for GPS position determination.
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Abstract
A communication device and method for operating the same includes a GPS receiver that periodically generates a position signal, a wireless modem transmitting or receiving messages and a controller that is coupled to the receiver and the modem. The controller discontinues operating the wireless modem when the GPS signal generates the position signal and vice versa to reduce interference with the other device.
26 Citations
17 Claims
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1. A method of operating a communication device having a transmitting device with an antenna for sending wireless signals which is in proximity to a GPS signal receiver with an antenna for periodically receiving external signals for GPS position determination comprising:
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putting the transmitting device into a sleep mode of predetermined time duration in which it does not transmit wireless signals during a time period in which the GPS signal receiver is receiving external signals for GPS position determination; checking whether the GPS signal receiver has obtained a position fix from the external signals for GPS position determination; and reactivating the transmitting device to transmit wireless signals only when both of the following conditions are met; the predetermined time duration for the sleep mode has lapsed, and the GPS signal receiver has obtained a position fix for GPS position determination. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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8. A communication device comprising:
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a transmitting device with an antenna for sending wireless signals which is in proximity to a GPS signal receiver; a GPS signal receiver with an antenna for periodically receiving external signals for GPS position determination comprising; a receiving device periodically receiving a plurality of GPS position signals; a controller coupled to the GPS signal receiver and the transmitting device, said controller having a programmed control sequence for; putting the transmitting device into a sleep mode of predetermined time duration in which it does not transmit wireless signals during a time period in which the GPS signal receiver is receiving external signals for GPS position determination; checking whether the GPS signal receiver has obtained a position fix from the external signals for GPS position determination; and reactivating the transmitting device to transmit wireless signals only when both of the following conditions are met; the predetermined time duration for the sleep mode has lapsed, and the GPS signal receiver has obtained a position fix for GPS position determination. - View Dependent Claims (9, 10, 11, 12)
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13. A method of operating a communication device having a transmitting device with an antenna for sending wireless signals which is in proximity to a GPS signal receiver with an antenna for periodically receiving external signals for GPS position determination comprising:
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putting operation of the transmitting device on hold for a predetermined time duration; thereafter, turning on the GPS signal receiver and obtaining a position fix; thereafter, turning off the GPS signal receiver; and then reactivating operation of the transmitting device after the predetermined time duration has elapsed. - View Dependent Claims (14, 15, 16, 17)
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Specification