ATCS: An adaptive TCP coding scheme for satellite IP networks
Wei Dong, Junfeng Wang, Minhuan Huang, Jian Tang, Hongxia Zhou · KSII Transactions on Internet and Information Systems · 2011
In this paper we propose ATCS, a practical TCP protocol coding scheme based on network coding for satellite IP networks.The proposal is specially designed to enhance TCP performance over satellite networks.In our scheme, the source introduces a degree of redundancy and transmits a random linear combination of TCP packets.Since the redundant packets are utilized to mask packet loss over satellite links, the degree of redundancy is determined by the link error rates.Through a simple and effective method, ATCS estimates link error rates in real time and then dynamically adjusts the redundant factor.Consequently, ATCS is adaptable to a wide range of link error rates by coding TCP segments with a flexible redundancy factor.Furthermore, the scheme is compatible with traditional TCP variants.Simulation results indicate that the proposal improves TCP performance considerably.