A real-time multicast routing scheme for multi-hop switched fieldbuses

—The rapid scaling up of Networked Control Systems (NCS) is forcing traditional single-hop shared medium industrial fieldbuses (a.k.a. fieldbuses) to evolve toward multi-hop switched fieldbuses. Such evolution faces many challenges. The first is the re-design of switch architecture. To meet the real-time nature of NCS traffic, and to lay a smooth evolution path for switch manufacturers, it is widely agreed that a (if not the) promising switch architecture is an input queueing crossbar architecture running TDMA scheduling. The second challenge is real-time multicast. NCS applications usually involve complex distributed multipleinput-multiple-output interactions, which by their nature necessitate real-time multicast. In shared medium fieldbuses, real-time multicast is straightforward as data sent to the medium is heard by all nodes. On multi-hop switched fieldbuses, however, real-time multicast becomes non-trivial. In this paper, we prove real-time multicast on multi-hop switche...

• Type: Journal
• Year: 2011
• Where: INFOCOM
• Authors: Lixiong Chen, Xue Liu, Qixin Wang, Yufei Wang
• Keywords: Communications, Heuristic Algorithm, INFOCOM 2011, Networked Control Systems, Time Multicast