A Mobile Ad hoc Network (MANET) is characterized by multi-hop wireless connectivity, frequently changing network topology with mobile nodes and the efficiency of the dynamic routing protocol plays an important role in the performance of the network. In this paper, the performance of five routing pro...
A Mobile Ad hoc Network (MANET) is characterized by multi-hop wireless connectivity, frequently changing network topology with mobile nodes and the efficiency of the dynamic routing protocol plays an important role in the performance of the network. In this paper, the performance of five routing protocols for MANET is compared by using OPNET modeler: AODV, DSR, GRP, OLSR and TORA. The various performance metrics are examined, such as packet delivery ratio, end-to-end delay and routing overhead with varying data traffic, number of nodes and mobility. In our simulation results, OLSR shows the best performance in terms of data delivery ratio in static networks, while AODV has the best performance in mobile networks with moderate data traffic. When comparing proactive protocols (OLSR, GRP) and reactive protocols (AODV, DSR) with varying data traffic in the static networks, proactive protocols consistently presents almost constant overhead while the reactive protocols show a sharp increase to some extent. When comparing each of proactive protocols in static and mobile networks, OLSR is better than GRP in the delivery ratio while overhead is more. As for reactive protocols, DSR outperforms AODV under the moderate data traffic in static networks because it exploits caching aggressively and maintains multiple routes per destination. However, this advantage turns into disadvantage in high mobility networks since the chance of the cached routes becoming stale increases.
A Mobile Ad hoc Network (MANET) is characterized by multi-hop wireless connectivity, frequently changing network topology with mobile nodes and the efficiency of the dynamic routing protocol plays an important role in the performance of the network. In this paper, the performance of five routing protocols for MANET is compared by using OPNET modeler: AODV, DSR, GRP, OLSR and TORA. The various performance metrics are examined, such as packet delivery ratio, end-to-end delay and routing overhead with varying data traffic, number of nodes and mobility. In our simulation results, OLSR shows the best performance in terms of data delivery ratio in static networks, while AODV has the best performance in mobile networks with moderate data traffic. When comparing proactive protocols (OLSR, GRP) and reactive protocols (AODV, DSR) with varying data traffic in the static networks, proactive protocols consistently presents almost constant overhead while the reactive protocols show a sharp increase to some extent. When comparing each of proactive protocols in static and mobile networks, OLSR is better than GRP in the delivery ratio while overhead is more. As for reactive protocols, DSR outperforms AODV under the moderate data traffic in static networks because it exploits caching aggressively and maintains multiple routes per destination. However, this advantage turns into disadvantage in high mobility networks since the chance of the cached routes becoming stale increases.
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제안 방법
In this paper, a systematic performance study of five routing protocols for a MANET was carried out, by comparing the simulated performance for each protocol using the OPNET modeler [6] under the varying network traffic, number of nodes and node’s speed.
The purpose of our simulations is to uncover in which situations the individual protocols have their strengths and weaknesses, rather than to promote one protocol as generally better than the others.
Unless otherwise stated when describing the simulation results, the simulations are conducted with scenarios conforming to the above parameters and the default values of parameters recommended by each protocol standard and the OPNET.
In this paper, five representative routing protocols (AODV, DSR, GRP, OLSR, and TORA) for MANET have been compared in the view of their packet delivery ratio, end-to-end delay and routing overhead to understand the advantages and disadvantages of each protocol. For this purpose, we developed three sets of experiments by using OPNET modeler for analyzing the effect of data traffic pattern, number of nodes, and node mobility.
이론/모형
Simulations are conducted by using the OPNET [6]. The OPNET provides a comprehensive development environment supporting the modeling of communication networks and the simulation and performance evaluation of the systems.
성능/효과
Only the GRP among routing protocols is affected by the mobility and the amounts of control traffic generated by other protocols remain constant relatively. From the graphs it can be confirmed that the proactive protocols, OLSR and GRP, are not influenced by data traffic volume, while the reactive protocols are increased a lot.
In this paper, five representative routing protocols (AODV, DSR, GRP, OLSR, and TORA) for MANET have been compared in the view of their packet delivery ratio, end-to-end delay and routing overhead to understand the advantages and disadvantages of each protocol. For this purpose, we developed three sets of experiments by using OPNET modeler for analyzing the effect of data traffic pattern, number of nodes, and node mobility.
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