System and method for dual mode communication
AssigneeWorldVu Satellites Limited
InventorGregory Thane Wyler
Life of this patent
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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.
Claims17
A method of communication, the method comprising:
- substantially continuously detecting, by a dual-mode device (DMD), a signal level of the 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;
- and
- if the detected signal level of the cellular phone network falls below a specified threshold, presenting a cellular transceiver 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.
A dual-mode device (DMD) comprising:
- a cell phone port that communicates with a cell phone communication link;
- a satellite 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 said cell phone over the cell phone port, and (b) if the detected signal level falls below a specified threshold, present the apparatus to the cell phone as a cell tower through the cell phone port to enable the cell phone to hand over the established telephone call to the DMD.
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 about to become unavailable to the cell phone, the method comprising:
- continuously detecting, by a processing engine of 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 through the cellular phone network, the DMD including a cellular transceiver for communicating with the cell phone through a wireless cellular link and a satellite transceiver 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 transceiver 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.
Dependencies are inferred from the claim text.