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US 8,078,164 B2Granted
Mobile telephone VOIP/cellular seamless roaming switching controller
AssigneeVasu Networks Corporation
InventorVasudevan Ganesan
Life of this patent
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AssigneeVasu Networks Corporation
InventorVasudevan Ganesan
Estimating the term…
A nomadic server and a related system provides seamless roaming for a mobile communication device between different types of wireless networks, such as WiFi and cellular networks for voice, data and video communication. Use of the nomadic server enables a combination of WiFi and cellular networks for providing access to the cellular phones and make use of the VOIP networks for switching the calls wherever possible. The nomadic server is a telephone communication processing and switching server that will “hold” the present, in-progress telephone communications without dropping, while roaming without losing the present, in-progress communication. For example, a telephone communication can be seamlessly switching between VOIP and cellular telephone networks using the nomadic server. Nomadic server resources interface with the VOIP and cellular network switches to provide the hand-off between networks. This approach enables switching of telephone communications over a VOIP network wherever possible either through WiFi or through cellular networks.
A system to provide communications for a mobile communication device that roams between multiple different types of wireless networks, the system comprising:
An interface server to maintain a seamless communication link between a mobile communication device and an end destination device as the mobile communication device roams from a first wireless coverage area associated within a first type of wireless network to a second wireless coverage area associated with a second type of wireless network, the interface server is configured to establish a second communication link over the second type of wireless network while a first communication link between the mobile communication device and the end destination device over the first type of wireless network is active, wherein the second communication link is initially set up to be forwarded to the interface server and subsequently the second communication link is routed to the mobile communication device as the first communication link is terminated and further wherein the interface server connects to the first type of wireless network and the second type of wireless network, and wherein the mobile communication device notifies the interface server if the first communication link falls below a threshold.
A system to provide communications for a mobile communication device that roams between cellular and non-cellular wireless networks, the system comprising:
A system to provide communications for a mobile communication device that roams between cellular and Voice over Internet (VOIP) networks, the system comprising:
Dependencies are inferred from the claim text.