Method of providing seamless session mobility
First Claim
1. A method of performing a handover of a real time communication session, established between a first terminal of a subscriber and a terminal of a communication partner of the subscriber through a packet network, from the first terminal of the subscriber to a second terminal of the subscriber, the first terminal of the subscriber associated with a first access network of the packet network and the second terminal of the subscriber associated with a second access network of the packet network, whereby the method comprises the steps of:
- generating at a call signaling server, in response to a trigger, control messages regarding the processing of the handover;
receiving and processing said control messages at a network node;
establishing a communication session with the second terminal of the subscriber;
mixing data packets received from the first terminal and the second terminal of the subscriber onto a data stream of the communication session towards the terminal of the subscriber'"'"'s communication partner and copying data packets received from the terminal of the subscriber'"'"'s communication partner onto data streams of the communication sessions towards the first terminal and the second terminal of the subscriber;
terminating the exchange of data packets between the network node and the first terminal of the subscriber via the first access network within the context of the communication session on completion of the handover.
1 Assignment
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Accused Products
Abstract
A method of performing a handover of a real time communication session, as well as a call signaling server for performing the handover of the real time communication session. The real time communication session is established between a first terminal of a subscriber and a terminal of a communication partner of the subscriber through a packet network. The handover is performed from the first terminal of the subscriber to a second terminal of the subscriber, whereby the first terminal of the subscriber is associated with a first access network of the packet network and the second terminal of the subscriber is associated with a second access network of the packet network. A call signaling server generates, in response to a trigger, control messages regarding the processing of the handover. The control messages are received and processed at a network node. A communication session with the second terminal of the subscriber is established.
27 Citations
10 Claims
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1. A method of performing a handover of a real time communication session, established between a first terminal of a subscriber and a terminal of a communication partner of the subscriber through a packet network, from the first terminal of the subscriber to a second terminal of the subscriber, the first terminal of the subscriber associated with a first access network of the packet network and the second terminal of the subscriber associated with a second access network of the packet network, whereby the method comprises the steps of:
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generating at a call signaling server, in response to a trigger, control messages regarding the processing of the handover;
receiving and processing said control messages at a network node;
establishing a communication session with the second terminal of the subscriber;
mixing data packets received from the first terminal and the second terminal of the subscriber onto a data stream of the communication session towards the terminal of the subscriber'"'"'s communication partner and copying data packets received from the terminal of the subscriber'"'"'s communication partner onto data streams of the communication sessions towards the first terminal and the second terminal of the subscriber;
terminating the exchange of data packets between the network node and the first terminal of the subscriber via the first access network within the context of the communication session on completion of the handover. - View Dependent Claims (2, 3, 4, 5, 6, 7)
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- 8. A call signaling server for performing a handover of a real time communication session, established between a first terminal of a subscriber and a terminal of a communication partner of the subscriber through a packet network, from the first terminal of the subscriber to a second terminal of the subscriber, the first terminal of the subscriber associated with a first access network of the packet network and the second terminal of the subscriber associated with a second access network of the packet network, whereby the call signaling server comprises a control unit adapted to generate, in response to a trigger, control messages regarding the processing of the handover, send said control messages to a network node, initiate the establishment of a communication session with the second terminal of the subscriber, the mixing of data packets received at the network node from the first terminal and the second terminal of the subscriber onto a data stream of the communication session towards the terminal of the subscriber'"'"'s communication partner and the copying of data packets received at the network node from the terminal of the subscriber'"'"'s communication partner onto data streams of the communication sessions towards the first terminal and the second terminal of the subscriber, and initiate the termination of the exchange of data packets between the network node and the first terminal of the subscriber via the first access network within the context of the communication session on completion of the handover.
Specification