Network coding offers new capabilities for efficientudinformation multicasting in communication networks. In thisudpaper, we study rate control for multicast with network coding.udWe propose a path-based multicasting scheme, where eachudsource has multiple paths to each receiver in the multicastudgroup. One advantage of this approach over a tree-basedudapproach is that it is easier to find a minimum cost set of pathsudas compared to trees. We present three end-to-end rate controludalgorithms which operate over the set of paths supplied by theudnetwork layer. With random network coding, all algorithms canudbe implemented in a distributed manner. Our algorithms canudalso be generalized to solve other optimization problems withudnon-strictly concave objection function.
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