Cross-layer design for TCP splitting connections with network coding in DVB-RCS networks

In this paper, we propose a cross-layer design for transmission control protocol (TCP) splitting connections with network coding in digital video broadcasting-return channel via satellite (DVB-RCS) networks. In particular, we propose not only a cross-layer architecture for interaction between TCP and the resource allocation (RA) scheme in the link layer but also a tuning algorithm for the TCP contention window (CWND) by using information on the RA in the link layer and the redundancy rate for network-coded packets. The simulation results show that TCP CWND can be adjusted by RA information in the proposed cross-layer design. Furthermore, through the transmission of network-coded packets and the proposed CWND tuning algorithm, TCP throughput is enhanced in lossy environment due to user mobility.