RMAC: A New MAC Protocol with Reliable Multicast Support for Wireless
Ad-Hoc Networks
Weisheng Si, ws4u@cs.virginia.edu
Huafeng Lu, hl3d@cs.virginia.edu
Dec 6th, 2002
In this course project, we present a new MAC protocol called RMAC that supports reliable multicast for wireless ad hoc networks. By utilizing the busy tone mechanism to realize multicast reliability, RMAC mainly has three novelties: (1) it uses a variable-length control frame to stipulate an order for the receivers to respond with feedbacks, such that feedback collision is avoided; (2) it extends the traditional usage of busy tone for protecting the data reception into the multicast scenario; (3) it introduces a new usage of busy tone for acknowledging the data frames. As a result, our evaluation shows that RMAC achieves high reliability at low overhead.