Toward Service Differentiation Based on a Semi-Stateless Approach for Mobile Ad Hoc Networks

This paper discusses an approach of QoS service differentiation in mobile ad hoc networks. We aim to investigate the performances of the proposed semi-stateless approach, named “MARS”, over the existing stateless approaches. Mars supports both real-time UDP traffic, and best-effort UDP and TCP traffic. The main objective of MARS is to minimize the end-to-end delay of traffic. The proposed model uses admission control with a temporary reservation process for real-time flows, and regulation techniques for best-effort and real-time flows. The simulations performed with ns-2 illustrate the advantages of MARS mechanisms. The results show that the proposed approach achieves better performances over the SWAN model in terms of the average end-to-end delay under non-highly dynamic topology. Keywords— QoS guarantee, wireless ad hoc networks, traffic regulation, semi-stateless, real-time, admission control. Toward Service Differentiation Based on a Semi-Stateless Approach for Mobile Ad Hoc Networks L. Khoukhi, S. Cherkaoui Department of Electrical and Computer Engineering, Université de Sherbrooke J1K 2R1, QC, Canada {Lyes.Khoukhi, Soumaya.Cherkaoui}@USherbrooke.ca Abstract— This paper discusses an approach of QoS service differentiation in mobile ad hoc networks. We aim to investigate the performances of the proposed semi-stateless approach, named “MARS”, over the existing stateless approaches. MARS supports both real-time UDP traffic, and best-effort UDP and TCP traffic. The main objective of MARS is to minimize the end-to-end delay of traffic. The proposed model uses admission control with a temporary reservation process for real-time flows, and regulation techniques for best-effort and real-time flows. The simulations performed with ns-2 illustrate the advantages of MARS mechanisms. The results show that the proposed semi-stateless approach achieves better performances over the SWAN model in terms of the average end-to-end delay in non-highly dynamic topologies. This paper discusses an approach of QoS service differentiation in mobile ad hoc networks. We aim to investigate the performances of the proposed semi-stateless approach, named “MARS”, over the existing stateless approaches. MARS supports both real-time UDP traffic, and best-effort UDP and TCP traffic. The main objective of MARS is to minimize the end-to-end delay of traffic. The proposed model uses admission control with a temporary reservation process for real-time flows, and regulation techniques for best-effort and real-time flows. The simulations performed with ns-2 illustrate the advantages of MARS mechanisms. The results show that the proposed semi-stateless approach achieves better performances over the SWAN model in terms of the average end-to-end delay in non-highly dynamic topologies. Keywords— QoS guarantee, wireless ad hoc networks, traffic regulation, semi-stateless, real-time, admission control.