Network coding has shown a good potential for improving network throughput and, recently,\r\nhas been used in multimedia transmission over wireless networks. In addition to guaranteed\r\nthroughput, real-time multimedia transmission requires bounded delay, delay variation, and\r\npacket loss. This paper presents RTOC, a new XOR-based opportunistic network coding\r\narchitecture for real-time data transmission. RTOC is an application-independent architecture\r\nthat takes into consideration the characteristics of real-time traffic and provides an efficient\r\nframework to optimize multimedia application requirements such as bandwidth, delay, delay\r\nvariation, and loss. The performance of RTOC was evaluated using simulated video\r\nstreaming traffic. The results demonstrated that RTOC can improve the real-time performance\r\nmetrics such as the packet delivery ratio, end-to-end delay, jitter, and throughput by\r\nconsiderable margins.
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