Title :
Adaptive RTT-driven transport-layer flow and error control protocol for QoS guaranteed image transmission over multi-hop underwater wireless networks: Design, implementation, and analysis
Author :
Ping Wang ; Jiahao Li ; Xi Zhang
Author_Institution :
Dept. of Electr. & Comput. Eng., Texas A&M Univ., College Station, TX, USA
Abstract :
With the rapid advances in data transmission over various advanced underwater acoustic networks, it is important to develop the efficient protocol to obtain a high data-rate with QoS guarantee requirements for acoustic wireless communications. Because of the harsh underwater acoustic environments, such as time-varying network topology and channel conditions, limited bandwidth and constrained underwater signal propagation, we develop and implement the multi-hop adaptive RTT-driven transport layer flow and error control protocol (ARTFEC) for QoS guaranteed image transmission in underwater wireless networks. ARTFEC is based on the congestion window size control and the Q-learning optimal timeout selection with QoS provisioning. For the congestion window size control, we propose an RTT-based data flow control policy to adapt to the varying acoustic channel environments, aiming to guarantee the reliability and high data rate of data transmission. In addition, we develop a Q-learning based optimal timeout selection algorithm to improve the channel utilization efficiency, which can increase the end-to-end throughput while decreasing the packet loss rate. We implement ARTFEC using our lab testbed, which consists of the Aqua-Net protocol stack and the acoustic OFDM modems. The simulation results obtained show that our developed ARTFEC transport layer protocol outperforms the other existing reliable data transmission schemes, in terms of end-to-end throughput and packet loss rate.
Keywords :
OFDM modulation; modems; quality of service; telecommunication congestion control; telecommunication network topology; transport protocols; underwater acoustic communication; ARTFEC; Aqua-Net protocol stack; Q-learning optimal timeout selection; QoS; RTT-based data flow control; acoustic OFDM modems; acoustic channel environments; acoustic wireless communications; adaptive RTT-driven transport-layer flow; channel utilization; congestion window size control; data transmission; error control protocol; image transmission; multihop underwater wireless networks; time-varying network topology; transport layer protocol; underwater acoustic environments; underwater signal propagation; Acoustics; Image communication; Packet loss; Protocols; Throughput; Wireless networks; Q-learning timeout selection; Underwater wireless networks; congestion window size control; end-to-end throughput; multi-hop; orthogonal frequency division multiplexing (OFDM); packet loss rate; quality of service (QoS); round trip time (RTT);
Conference_Titel :
Communications (ICC), 2014 IEEE International Conference on
Conference_Location :
Sydney, NSW
DOI :
10.1109/ICC.2014.6884137