FROM MULTIMEDIA MODELS TO MULTIMEDIA TRANSPORT PROTOCOLS

This paper presents a new protocol architecture for distributed multim edia systems which includes a new and general protocol layer for the t ransport of multimedia objects. The proposed protocols are based on th e use of two extended timed and time Petri net models that specify the synchronisation requirements of multimedia applications. After presen ting these two formal models, it is shown how they have been used to d esign the general multimedia architecture whose transport layer is bas ed on the concept of a partial order connection, an extension of the c lassical connection oriented (e.g., TCP) and connectionless (e.g., UDP ) transmission concepts.