Method of seamless roaming between wireless local area networks and cellular carrier networks
First Claim
1. A method of handling calls between a wireless local area network of an enterprise and a cellular carrier network for a mobile terminal that is capable of communicating over the wireless local area network and the cellular carrier network, the method comprising:
- registering and emulating the mobile terminal on the cellular carrier network when the mobile terminal is communicating via the wireless local area network within the enterprise;
receiving, via a fixed radio terminal, calls from the cellular carrier network; and
routing, via the fixed radio terminal, the received calls received from the cellular carrier network to the mobile terminal via the wireless local area network, wherein routing the received calls comprises calling a telephone number of the mobile terminal for a call of the received calls involving a party in a given network.
7 Assignments
0 Petitions
Accused Products
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.
47 Citations
28 Claims
-
1. A method of handling calls between a wireless local area network of an enterprise and a cellular carrier network for a mobile terminal that is capable of communicating over the wireless local area network and the cellular carrier network, the method comprising:
-
registering and emulating the mobile terminal on the cellular carrier network when the mobile terminal is communicating via the wireless local area network within the enterprise; receiving, via a fixed radio terminal, calls from the cellular carrier network; and routing, via the fixed radio terminal, the received calls received from the cellular carrier network to the mobile terminal via the wireless local area network, wherein routing the received calls comprises calling a telephone number of the mobile terminal for a call of the received calls involving a party in a given network. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9)
-
-
10. A system for managing calls between a wireless local area network (wireless LAN) and a cellular carrier network, the system comprising:
-
a fixed radio terminal configured to communicate with the cellular carrier network and to emulate a mobile terminal on the cellular carrier network; and a gateway configured to; receive a registration message from the mobile terminal via the wireless LAN, register the mobile terminal on the cellular carrier network via the fixed radio terminal, receive a call from the cellular carrier network via the fixed radio terminal, and route the received call to the mobile terminal over the wireless local area network by calling a telephone number of the mobile terminal when the received call involves a party in a given network. - View Dependent Claims (11, 12, 13, 14, 15, 16, 17, 18, 19, 20, 21, 22, 23, 24)
-
-
25. A system for managing calls between a wireless local area network and a cellular carrier network, the system comprising:
-
a mobile terminal capable of communicating over the wireless local area network and the cellular carrier network; and a gateway that registers and emulates the mobile terminal on the cellular carrier network when the mobile terminal is communicating via the wireless local area network, the calls from the cellular carrier network being received via a fixed radio terminal of the gateway, the gateway configured to route calls received from the cellular carrier network to the mobile terminal over the wireless local area network; wherein the mobile terminal is configured to be assigned a telephone number for the cellular carrier network and a telephone number for a private branch exchange and calls placed to the telephone number of the cellular carrier network are received by the fixed radio terminal of the gateway and routed to the mobile terminal via the wireless local area network when the mobile terminal is on the wireless local area network and calls placed to the telephone number of the private branch exchange are received by the gateway and routed to the mobile terminal via the wireless local area network when the mobile terminal is on the wireless local area network; wherein the mobile terminal attempts to register with the wireless local area network and only registers with the cellular carrier network if registration with the wireless local area network is unsuccessful; and wherein if a call is placed to the telephone number of the private branch exchange while the mobile terminal is communicating over the cellular carrier network, then the gateway calls the telephone number of the mobile terminal on the cellular carrier network and routes the call to the mobile terminal through the cellular carrier network.
-
-
26. A method, comprising:
-
registering, at a gateway, a mobile terminal via a wireless local area network (LAN); establishing, at the gateway, a wireless-LAN connection to the mobile terminal via the wireless LAN; establishing, at the gateway, a wireless connection with a cellular carrier network on behalf of the mobile terminal; receiving, at the gateway, a cellular call intended for the mobile terminal from the cellular carrier network and routing the call to the mobile terminal via the wireless-LAN connection; receiving, at the gateway, a handoff request from the mobile terminal; and responsive to the handoff request, the gateway; making a second call to a telephone number of the mobile terminal, and receiving the second call on behalf of the mobile terminal. - View Dependent Claims (27, 28)
-
Specification