Since the deployment of mobile IP multicast protocols is still relatively rare, research in this area is typically based on simulations. However, many of the previous evaluations of mobile IP multicast protocols were based on a single, simple mobility model, and thus fail to capture the variety of mobility patterns likely to be exhibited by mobile IP multicast applications. The impact of different mobility models on the performance of mobile IP multicast protocols, including RS, BT and MoM, is evaluated in the paper. Results show that the protocol performance may vary drastically across mobility models and performance rankings of protocols may vary with the mobility models used. Two key mobility metrics that help to explain these performance variations are also demonstrated.
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