Joint local loss recovery and congestion control for reliable multicast

Server-based loss recovery for reliable multicast can provide significant performance improvement in terms of loss recovery latency and bandwidth consumption. Appropriate congestion control mechanisms can provide fairness and maintains a high network throughput and link utilization. Data delivery, including loss recovery, and congestion control in reliable multicast are not independent issues and should be addressed simultaneously. In this paper, we propose to jointly perform local delivery and congestion control (LDCC). Mechanisms including local loss recovery, acknowledgement processing, buffer management, and congestion control are carefully designed. We demonstrate through simulations that the proposed scheme can achieve significantly lower loss recovery latency without sacrificing the network throughput, compared to existing local recovery protocols such as AER/NCA. It is also shown that our scheme conforms to TCP-compatible requirement.