System and method for transitioning a communication session between networks that are not commonly controlled
First Claim
Patent Images
1. A method comprising:
- receiving, by a network transition gateway, a first message from a mobile device indicating that the mobile device is in a session initiation protocol (SIP) wireless hotspot, wherein the first message is received directly from the mobile device by the network transition gateway and does not pass through a cellular network;
receiving, by the network transition gateway, a second message from the mobile device indicating that the mobile device is engaged in a communication session with a second device using a first call leg via the cellular network while in the SIP wireless hotspot, wherein the second message is received directly from the mobile device by the network transition gateway and does not pass through the cellular network, and wherein the network transition gateway has no control over the cellular network and wherein the network transition gateway is configured to send only requests for establishing, routing, and breaking down a call to the cellular network;
requesting, by the network transition gateway, that a public switched telephone network (PSTN) gateway add the mobile device to the communication session using a second call leg via the SIP wireless hotspot and terminate the first call leg, wherein the PSTN gateway is separate from the cellular network;
receiving, by the network transition gateway, an affirmative response from the PSTN gateway; and
sending, by the network transition gateway, a third message to the mobile device to notify the mobile device of the affirmative response.
1 Assignment
0 Petitions
Accused Products
Abstract
Provided are a system and method for network transitions. In one example, the method includes receiving messages from a mobile device indicating that the mobile device is in a session initiation protocol (SIP) wireless hotspot and that the mobile device is engaged in a communication session via a cellular network while in the SIP wireless hotspot. The cellular network is instructed to add the mobile device to the communication session via the SIP wireless hotspot. An affirmative response is received from the cellular network and a third message is sent to the mobile device to notify the mobile device of the affirmative response.
-
Citations
18 Claims
-
1. A method comprising:
-
receiving, by a network transition gateway, a first message from a mobile device indicating that the mobile device is in a session initiation protocol (SIP) wireless hotspot, wherein the first message is received directly from the mobile device by the network transition gateway and does not pass through a cellular network; receiving, by the network transition gateway, a second message from the mobile device indicating that the mobile device is engaged in a communication session with a second device using a first call leg via the cellular network while in the SIP wireless hotspot, wherein the second message is received directly from the mobile device by the network transition gateway and does not pass through the cellular network, and wherein the network transition gateway has no control over the cellular network and wherein the network transition gateway is configured to send only requests for establishing, routing, and breaking down a call to the cellular network; requesting, by the network transition gateway, that a public switched telephone network (PSTN) gateway add the mobile device to the communication session using a second call leg via the SIP wireless hotspot and terminate the first call leg, wherein the PSTN gateway is separate from the cellular network; receiving, by the network transition gateway, an affirmative response from the PSTN gateway; and sending, by the network transition gateway, a third message to the mobile device to notify the mobile device of the affirmative response. - View Dependent Claims (2, 3, 4, 5, 6, 13)
-
-
7. A method for execution on a mobile device comprising:
-
maintaining, by the mobile device, a communication session with a second device via a first call leg over a cellular network; detecting, by the mobile device, the presence of a Session Initiation Protocol (SIP) wireless hotspot while the communication session is being maintained; notifying, by the mobile device, a network transition gateway of the presence of the SIP wireless hotspot and the communication session being maintained; receiving, by the mobile device, instructions from the network transition gateway to establish a second call leg with a public switched telephone network (PSTN) gateway via the SIP wireless hotspot; establishing, by the mobile device, the second call leg; and continuing, by the mobile device, the communication session via the second call leg over the SIP wireless hotspot, wherein signaling between the mobile device and the second device passes through the network transition gateway and wherein data between the mobile device and the second device is peer-to-peer and does not pass through the network transition gateway. - View Dependent Claims (8, 9, 10, 11, 12)
-
-
14. A method comprising:
-
receiving, by a network transition gateway via a public switched telephone network (PSTN) gateway, a first message from a cellular network indicating that a mobile first device has sent a call setup request to the cellular network for a communication session with a second device, wherein the network transition has no control over the cellular network; communicating, by the network transition gateway via the PSTN gateway, with the cellular network to establish the call for the first device via the cellular network using a first call leg between the first device and the cellular network, wherein the network transition gateway maintains a second call leg with the cellular network for signaling to control the communication session, and wherein the network transition gateway is configured to send only requests for establishing, routing, and breaking down a call to the cellular network; receiving, by the network transition gateway, a second message from the first device indicating that the first device has entered a SIP wireless hotspot, wherein the second message is received while the communication session is maintained through the cellular network; entering, by the network transition gateway, the first device in a register of the network transition gateway to indicate that the first device is in the SIP wireless hotspot; and sending, by the network transition gateway to the PSTN gateway, a third message requesting that the PSTN gateway add the first device to the call by establishing a third call leg with the first device via the SIP wireless hotspot and that the first call leg between the first device and the cellular network be terminated, wherein the network transition gateway maintains control of the call after the call is moved from the cellular network to the SIP wireless hotspot. - View Dependent Claims (15, 16, 17, 18)
-
Specification