Multicasting in Ad-Hoc Networks: Comparing AMRIS and ODMRP

Multicasting can efficiently support a variety of applications that are characterized by a close degree of collaboration, typical for many ad-hoc applications currently envisioned. Within the wired network, well-established routing protocols exist to offer an efficient multicasting service. As nodes become increasingly mobile, these protocols need to evolve to similarly provide an efficient service in the new environment. This paper discusses the performance of two proposed multicast protocols for ad-hoc networks: Ad Hoc Multicast Routing Protocol Utilizing Increasing ID Numbers (AMRIS) and On-demand Multicast Routing Protocol (ODMRP).AMRIS builds and maintains a multicast tree based on hard state information, ODMRP maintains a mesh based on soft state. Our results show that in many scenarios AMRIS achieves a higher packet delivery ratio, while keep