Qos Based Performance Evaluation for Manets
QoS based performance evaluation for MANETs
Heng Luo
Institute for Digital Communications University of Edinburgh Edinburgh, UK H.Luo@ed.ac.uk
Abstract—QoS support in MANETs is challenging because of unfavourable conditions such as a dynamic topology, limited bandwidth and energy constraints. In the past decade, significant effort has been devoted to QoS routing design which fails to obtain a one-for-all solution for MANETs. The key reason, it is believed, is the application dependent nature of routing protocols. Moreover, few researchers consider the relative importance of QoS metrics. Last but not the least, performance metrics are compared independently without any conclusion indicating the optimal protocol in a given scenario. In this paper, a QoS based performance evaluation with analytic hierarch process (AHP) is proposed and the alternative protocols are ranked according to the relative importance of QoS metrics. Keywords- MANETs; QoS; AHP;Performance evaluation
D.I. Laurenson
Institute for Digital Communications University of Edinburgh Edinburgh, UK Dave.Laurenson@ed.ac.uk bandwidth, while satisfying QoS constrains of applications. In addition, devices in MANETs are often battery operated and thus energy consumption must be considered. Routing in MANETs, which must react efficiently to dynamic topology and support traditional IP services, is so crucial and complicated that an IETF working group was set up. Considerable effort, therefore, has been devoted which leads to the emergence of a number of QoS routing techniques [3]. In spite of the tremendous effort devoted to QoS routing for MANETs, the relative importance of QoS metrics, to the author’s best knowledge, is seldom considered. However, there are some applications in which relative importance of QoS metrics have to be considered in reality. For example, live video traffic regards delay and jitter as more critical than packet delivery ratio, email applications rank packet delivery ratio higher
Heng Luo
Institute for Digital Communications University of Edinburgh Edinburgh, UK H.Luo@ed.ac.uk
Abstract—QoS support in MANETs is challenging because of unfavourable conditions such as a dynamic topology, limited bandwidth and energy constraints. In the past decade, significant effort has been devoted to QoS routing design which fails to obtain a one-for-all solution for MANETs. The key reason, it is believed, is the application dependent nature of routing protocols. Moreover, few researchers consider the relative importance of QoS metrics. Last but not the least, performance metrics are compared independently without any conclusion indicating the optimal protocol in a given scenario. In this paper, a QoS based performance evaluation with analytic hierarch process (AHP) is proposed and the alternative protocols are ranked according to the relative importance of QoS metrics. Keywords- MANETs; QoS; AHP;Performance evaluation
D.I. Laurenson
Institute for Digital Communications University of Edinburgh Edinburgh, UK Dave.Laurenson@ed.ac.uk bandwidth, while satisfying QoS constrains of applications. In addition, devices in MANETs are often battery operated and thus energy consumption must be considered. Routing in MANETs, which must react efficiently to dynamic topology and support traditional IP services, is so crucial and complicated that an IETF working group was set up. Considerable effort, therefore, has been devoted which leads to the emergence of a number of QoS routing techniques [3]. In spite of the tremendous effort devoted to QoS routing for MANETs, the relative importance of QoS metrics, to the author’s best knowledge, is seldom considered. However, there are some applications in which relative importance of QoS metrics have to be considered in reality. For example, live video traffic regards delay and jitter as more critical than packet delivery ratio, email applications rank packet delivery ratio higher