Reducing transmission latency of real-time resilient video distribution by employing cumulative random linear coding

In this work-in-progress paper, we present a network coding scheme based on random linear coding (RLC), named cumulative RLC. Cumulative RLC applies RLC in a cumulative manner such that the end-to-end delay is minimized and it can be used for real-time one-to-many video distribution over wireless networks. The proposed cumulative RLC is well-suited especially for media applications with low-latency constraints such as real-time resilient video distribution for interactive service scenarios. The key property of cumulative RLC is reducing the waiting delay during the RLC encoding procedure. To verify the efficiency of the proposed cumulative RLC, we implement a real-time resilient video distribution system employing cumulative RLC over a IEEE 802.11-based wireless network. Experimental results show that in a typical setting, cumulative RLC yields reducing RLC encoding delay so it can help efficient real-time video distribution.