This paper investigates reliability mechanisms for mobile ad hoc wireless networks. The protocol, called Wireless Reliable Multicast (WiReM), uses an on-demand, mesh-based routing protocol for the forwarding mechanism. WiReM employs negative acknowledgements (NACK) and selective re-transmission of the missing data. Implosion avoidance is handled by aggregating NA CKs at the forwarding nodes. Additionally, WiReM incorporates local recovery mechanisms to minimize recovery times. We evaluate WiReM's performance via simulation.
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