Patent ID: 7474636

Claim:
A method in a radio system for carrying out data transfer between a radio terminal and another radio terminal after establishing a logical connection between the radio terminal and the another radio terminal, the method comprising the steps of: setting up at least one first logical channel for transferring data packets containing at least one AV stream; identifying at least one second logical channel set up by the another radio terminal for transferring the data packets; setting up at least one third logical channel for transferring a first set of control packets containing first control information regarding transfer of the data packets; identifying at least one fourth logical channel set up by the another radio terminal for the transfer of a second set of control packets containing second control information regarding transfer of the data packets; storing a correspondence information including a correspondence between the at least one first logical channel and the at least one second logical channel for the at least one AV stream and a correspondence between the at least one third logical channel and the at least one fourth logical channel for the first and second control information; and transmitting/receiving the data packets and the first set and second set of control packets between the radio terminal and the another radio terminal by using the correspondence information.