RADIOTERMINALS AND ASSOCIATED OPERATING METHODS THAT TRANSMIT POSITION INFORMATION RESPONSIVE TO CHANGE/RATE OF CHANGE OF POSITION
First Claim
Patent Images
1. A method of using a first radioterminal, the method comprising:
- authorizing at least one second radioterminal to receive geographic position information of the first radioterminal; and
transmitting a measure of a geographic position of the first radioterminal to the at least one second radioterminal that was authorized, responsive to a change of position of the first radioterminal and responsive to a rate of change of position of the first radioterminal.
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Abstract
A radioterminal includes a wireless communications transmitter, a wireless communications receiver and a GPS receiver. A controller is configured to enable the GPS receiver when the wireless communications receiver is receiving wireless communications, and to disable the GPS receiver when the wireless communications transmitter is transmitting wireless communications. Related methods also are described.
142 Citations
26 Claims
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1. A method of using a first radioterminal, the method comprising:
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authorizing at least one second radioterminal to receive geographic position information of the first radioterminal; and transmitting a measure of a geographic position of the first radioterminal to the at least one second radioterminal that was authorized, responsive to a change of position of the first radioterminal and responsive to a rate of change of position of the first radioterminal. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11)
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12. A radioterminal comprising:
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a wireless communications transceiver; a Global Positioning System (GPS) receiver; and a controller that is configured to authorize at least one other radioterminal to receive geographic position information of the radioterminal, to activate the GPS receiver to obtain a measure of a geographic position of the radioterminal and to activate the wireless communications transceiver to transmit the measure of the geographic position of the radioterminal to the at least one other radioterminal that was authorized, responsive to a change of position of the radioterminal and responsive to a rate of change of position of the radioterminal. - View Dependent Claims (13, 14, 15, 16)
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17. A system comprising:
a controller that is configured to authorize at least one receiver to receive geographic position information of a radioterminal and to cause a measure of a geographic position of the radioterminal to be transmitted to the at least one receiver that was authorized, responsive to a change of position of the radioterminal and responsive to a rate of change of position of the radioterminal. - View Dependent Claims (18, 19, 20, 21, 22, 23, 24, 25, 26)
Specification