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In this paper, packet loss rate and frame rate control finction for multimedia communication systems under heterogeneous environment by the wired and the wireless networks is proposed. In our suggested system, as channel coding, FEC (Forward Error Correction) method with Reed-Solomon coding is introduced to reduce the packet error rate on the wireless network. On the other hand, a frame rate control function is introduced on the source host receive host and the BS (Base Station). When it becomes larger for the rate of packet loss or delay, frame rate is changed, a frame can be chosen and be transmitted. Thereby, It can maintain the throughput of End-to-End while the packet error rate is reduced to the accepted value.