Abstract
A mobile ad hoc network (MANET) is a type of multi-hop network under different movement patterns without requiring any fixed infrastructure or centralized control. The mobile nodes in this network moves arbitrarily and topology changes frequently. In MANET routing, protocols play an important role to make reliable communication between nodes. There are several issues affecting the performance of MANET routing protocols. Mobility is one of the most significant factors that has an impact on the routing process. In this paper, FCM, SCM, RWM and HWM mobility models are designed to analyze the performance of AODV, OLSR and GRP protocols, with ten pause time values. These models are based on varying speeds and pause time of MANET participants. Different node parameters such as data drop rate, average end-to-end delay, media access delay, network load, retransmission attempts and throughput are used to make a performance comparison between mobility models. The simulation results showed that in most of the cases OLSR protocol provides better performance than other two routing protocols and it is more suitable for networks that require low delay and retransmission attempts, and high throughput.
Highlights
Mobile Ad hoc Network (MANET) is a collection of wireless mobile nodes without requiring any pre-existing network infrastructure
In [8], Kumari et al compared the performance of Ad-hoc on-Demand Distance Vector (AODV), DSDV, and Optimized Link State Routing Protocol (OLSR) routing protocols based on different parameters such as packet delivery ratio, routing overhead, packet loss and end-to-end delay under various mobility speed of nodes in the network
Shams et al [10] evaluated the performance of AODV and DSDV routing protocols based on four mobility models: Fast Car Model, Slow Car Model, Human Running model and Human Walking Model
Summary
Mobile Ad hoc Network (MANET) is a collection of wireless mobile nodes without requiring any pre-existing network infrastructure. Routing protocols in MANETs are the most significant part in order to find the optimal path for transmitting the information from the source node to the destination node. Due to the dynamic topology in MANET, it is difficult to develop an accurate, efficient, effective and reliable routing protocol to establish communication between wireless mobile nodes. These days, there are a number of routing protocols that have been developed for the mobile ad-hoc networks. In order to evaluate and analyze the performances of routing protocols, several simulations have been done with varying network sizes, data types and parameters.
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