Patent ID: 7864693
Filing Date: 2011-01-04
Classification: H04L,H04W

Abstract:
1. A method of establishing a requested multimedia communication session over a given physical channel between a calling terminal and a called terminal having differentiated capabilities, comprising: determining common multimedia session parameters to be used by both the calling terminal and the called terminal during the requested multimedia communication session that define how multimedia information should be communicated and interpreted and which depend on multimedia communication capabilities of the calling and called terminals before the requested multimedia communication session can be executed, determining whether any common multimedia session parameters for a previous multimedia communication session between the calling and called terminals have been stored in both the calling and the called terminals in connection with said previous multimedia communication session, by using at least one available session key that has been selected for said previous multimedia communication session and stored together with session parameters for said previous multimedia communication session, and if said common multimedia session parameters have been stored in both the calling and the called terminals, retrieving the stored common multimedia session parameters in each of the terminals by using said at least one session key in order to execute the requested multimedia communication session based on the retrieved session parameters, wherein the common multimedia session parameters include multiplexing scheme information indicating how plural information streams can be multiplexed in different ways into a single bitstream to be transmitted over a physical channel established between the terminals for the multimedia communication session.