Telephone with automatic switching between cellular and VoIP networks
First Claim
Patent Images
1. A mobile communication device comprising:
- a cellular communication module adapted to communicate with a wireless cellular network;
a Wi-Fi communication module adapted to communicate with an access point associated with a Wi-Fi network using a VoIP protocol; and
a switching circuit adapted to automatically switch operation between the cellular communication module and the Wi-Fi communication module.
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Abstract
A mobile communication device includes, in part, a cellular communication module, a first antenna adapted to receive and transmit data between the mobile communication module and a cellular network, a Wireless Fidelity (Wi-Fi) communication module, a second antenna adapted to receive and transmit data between the Wi-Fi communication module and a VoIP network, a signal monitoring circuit, and a switching circuit adapted to switch an existing communication from the cellular communication module to the Wi-Fi communication module or vice versa.
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Citations
16 Claims
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1. A mobile communication device comprising:
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a cellular communication module adapted to communicate with a wireless cellular network;
a Wi-Fi communication module adapted to communicate with an access point associated with a Wi-Fi network using a VoIP protocol; and
a switching circuit adapted to automatically switch operation between the cellular communication module and the Wi-Fi communication module. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10)
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11. A method comprising:
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detecting a first Wi-Fi signal level;
establish a first time window of a first predefined size T1 if the detected first Wi-Fi signal level is greater than a first predefined threshold value Vth1;
detecting a second Wi-Fi signal level during the first time window;
automatically switching a communication in progress via a cellular wireless network to a communication via a VoIP network if the second detected Wi-Fi signal level is greater than Vth1. - View Dependent Claims (12, 13, 14, 15, 16)
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Specification