Patent ID: 6930994
Filing Date: 2005-08-16
Classification: H04M,H04N,H04W

Abstract:
1. A method of controlling communication between user stations using a mobile communications system having a radio interface, said method comprising: establishing a call session between a first user station and at least a second user station over said radio interface, wherein the call session is configured for communication of voice signals between said first and second user stations; providing a data packet handler connected to a packet data network, wherein said data packet handler is configured to transfer data packets carrying call data between said first user station and said second user station during said call session; during said call session, receiving requests to transfer data packets carrying call data between said first user station and said second user station, and dynamically assigning radio resources for transfer of said data packets over said radio interface, wherein an amount of radio resource assigned varies in accordance with the amount of call data requiring transfer at different times during said call session as a result of said requests; holding control data relating to said call session between said first user station and said second user station, wherein said control data includes data indicating a state of said call session and data identifying the user stations participating in said call session; and during said call session, controlling the transfer of data packets carrying call data between said first and second user stations using said data packet handler in accordance with said control data.