A comparison of TCP-friendly congestion control protocols

Using the ns simulator, we perform a detailed study of the fairness and the smoothness properties of SimdNR, an enhanced version of SIMD. Our study includes TFRC and TCP congestion control protocols in both steady-state and highly dynamic network conditions through RED and DropTail routers. Our results show that SimdNR is fair to TCP through RED routers in steady-state scenario. But, SimdNR is not fair to TCP over drop tail routers. Also our results show that SimdNR demonstrates less smoothness than TFRC in steady-state scenario and superior smoothness than TFRC in dynamic network conditions