Selective Retransmission of MPEG Video Streams over IP Networks

Internet multimedia streaming is becoming increasingly popular to access multimedia information. Two major issues arise in spite of its popularity. First, limited bandwidth restricts high bit rate video transmission. Second, wireless transmission by its nature may introduce higher rate of errors during transmission. The frequent errors should cause deterioration of the quality of multimedia streams. In this paper we present a selective retransmission algorithm for video streaming over IP networks where the video is streamed using DCCP transport protocol. The goal is to minimize the number of the corrupted bits, with acceptable transmission delay. The performance of the algorithm was confirmed by analytical examinations. The result shows that the quality of MPEG streams is increasing significantly compared with the currently used methods.