Real time multicast in wireless networks

This paper presents a synchronization protocol for real-time multimedia application in wireless networks. A multimedia stream is multicast from one to some mobile terminals (MTs). Source and receivers can both be mobile. The protocol allows MTs to receive a multicast stream without breaks in playback as MTs move from cell to cell. The scheme is general because we make no assumption about clocks synchronization and messages are not time-stamped. However, it is used in a network having bounded delays. Verifications show that synchronization properties are respected. Moreover, simulations show that the strategy of known locations reduces the handoff duration compared to the one of unknown locations and then preserves the synchronization