Adaptive cross-layer-based TCP congestion control for 4G wireless mobile cloud access

To access the plentiful cloud services in cloud computing, data packets of diverse cloud applications are transmitted via the reliable end-to-end TCP or the unreliable UDP protocol. However, the reliable cloud transmissions suffer from wireless high-interference and high packet loss rate in heterogeneous wireless networks. Thus, an efficient cross-layer-based mechanism if proposed herein to differentiate whether a loss event is caused by the wired network congestion or by the wireless radio interference. Moreover, to analyze TCP four states probabilities of the adaptive TCP approach, a Markov chain-based analytical model is proposed. The proposed approach and several important congestion controls are evaluated under different impact factors, and the proposed approach outperforms other TCP approaches in goodput and yields competitive fairness.