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US 8,041,360 B2Granted
Method of seamless roaming between wireless local area networks and cellular carrier networks
AssigneeKraasten Bros. Fund B.V. LLC
InventorsOliver C. Ibe, Jianyu Zeng
Life of this patent
Estimating the term…
Abstract
A scheme that enables seamless roaming between the WLAN and the cellular carrier network by enabling a user that originates a call in the WLAN and happens to go outside the range of the WLAN to automatically switch over to the cellular carrier network without losing connection with the other party. This solution assumes that the mobile device has the capability to operate in at least two modes that include the WLAN mode and one of the cellular carrier modes, such as the GSM, IS-95 CDMA, IS-136 TDMA, and iDEN.
Claims18
A method, comprising:
- a gateway receiving a message regarding a mobile device initiating a handoff of an in-progress call, wherein the message comprises one or more parameters of the in-progress call for the handoff;
- the gateway sending an authentication message to authenticate the mobile device;
- the gateway receiving a location of the mobile device and network configuration parameters in response to the authentication message;
- the gateway establishing a connection with the mobile device via a wireless local area network based on the location of the mobile device;
- the gateway listening on a channel of a cellular carrier network used by the mobile device in the in-progress call;
- and the gateway relaying at least one parameter of the one or more parameters about the in progress call between the mobile device and the cellular carrier network.
3 more elements
A device, comprising:
- a fixed radio terminal;
- and a gateway configured to:
- receive a message regarding a mobile device initiating a handoff of an in-progress call via the fixed radio terminal, wherein the message comprises one or more parameters of the in-progress call for the handoff, send an authentication message to authenticate the mobile device, receive a location of the mobile device and network configuration parameters in response to the authentication message, establish a connection with the mobile device via a wireless local area network based on the location of the mobile device, listen on a channel of a cellular carrier network used by the mobile device in the in-progress call, and relay at least one parameter of the one or more parameters about the in-progress call between the mobile device and the cellular carrier network.
Dependencies are inferred from the claim text.