System and method for multiple mode communication
First Claim
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1. A method of communication, the method comprising:
- substantially continuously detecting, by a dual-mode device (DMD), a signal level of a land-based cellular phone network available to a cell phone that has established a telephone call at a first end of the call to a second end of the call through the cellular phone network;
if the detected signal level of the cellular phone network falls below a specified threshold, presenting the DMD to the cell phone as a cell tower to enable the cell phone to hand over the established telephone call to the DMD; and
transferring, by the DMD, the established telephone call from the cellular phone network to a satellite of a second network having a link back to a core network of said cellular phone network to provide an uninterrupted service.
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Abstract
A system and method of communication disclosed which may include establishing a telephone call for a cell phone at a first end of the call to a second end of the call, the cell phone receiving communication service from a cellular phone network; substantially continuously detecting a signal level of the cellular phone network available to the cell phone; and transferring the telephone call from the cellular phone service to a second network having a link back to a core network of said cellular phone network only if the detected signal level of the cellular phone service falls below a specified threshold.
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Citations
17 Claims
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1. A method of communication, the method comprising:
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substantially continuously detecting, by a dual-mode device (DMD), a signal level of a land-based cellular phone network available to a cell phone that has established a telephone call at a first end of the call to a second end of the call through the cellular phone network; if the detected signal level of the cellular phone network falls below a specified threshold, presenting the DMD to the cell phone as a cell tower to enable the cell phone to hand over the established telephone call to the DMD; and transferring, by the DMD, the established telephone call from the cellular phone network to a satellite of a second network having a link back to a core network of said cellular phone network to provide an uninterrupted service. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
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10. An apparatus comprising:
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a cellular communication port that communicates with a land-based cellular communication network; a satellite communication port that communicates with a satellite communication network; a processing engine that (a) continuously detects a signal level of service from a cellular phone network to a cell phone over the cellular communication port, (b) if the detected signal level falls below a specified threshold, present the apparatus to the cell phone as a cell tower through the cellular communication port to enable the cell phone to hand over an established telephone call to the apparatus and (c) transfers the established telephone call on said cell phone from the cellular phone network to said satellite communication network through the satellite communication port to provide an uninterrupted service. - View Dependent Claims (11, 12, 13, 14, 15)
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16. A method for a cell phone to communicate using a land-based cellular phone network and a satellite when the land-based cellular phone network is unavailable to the cell phone, the method comprising:
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continuously detecting, by a processing engine of a dual-mode device (DMD), a signal level of the land-based cellular phone network available to the cell phone that has established a telephone call through the cellular phone network, the DMD including a cellular communication port for communicating with the cell phone through a wireless cellular link and a satellite communication port for communicating with a satellite through a satellite link; and if the detected signal level of the cellular phone network falls below a specified threshold, presenting the cellular communication port in the DMD to the cell phone as a cell tower to enable the cell phone to hand over the established telephone call to the DMD; transferring, by the DMD, the established telephone call from the cellular phone network to the satellite having a link back to a core network of the cellular phone network. - View Dependent Claims (17)
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Specification