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Performance Comparison of Vanet Protocols

Oluşturulma Tarihi: 07-11-2017

Niteleme Bilgileri

Tür: Tez

Alt Tür: Yüksek Lisans Tezi

Yayınlanma Durumu: Yayınlanmamış

Dosya Biçimi: PDF

Dil: İngilizce

Konu(lar): TEKNOLOJİ,

Yazar(lar): Alqrgholei, Safa Abdulridha Abduljaleel (Yazar),

Emeği Geçen(ler): Koyuncu, Murat (Danışman),

Anahtar Kelimeler

Ad hoc networks, routing protocols, AODV, OLSR, TORA, DSR, GRP simulation, performance metrics, OPNET simulator


Özet

The use of devices with wireless technologies such as laptops and mobile phones are very popular. These devices influence the use of wireless networks such as ad hoc networks. Mobile ad hoc network (MANET) is a group of devices that are connected to each other by wireless links without any centralized controlling or infrastructure. Nodes (devices) of this network change their locations, and also the number of nodes may change during the time. Therefore, the topology type of this network is known as dynamic. Nodes in a dynamic topology communicate with each other using routing protocols. Routing protocols are responsible for finding a path between nodes. These protocols have a significant role for the total performance of the ad hoc networks. Routing protocols of ad-hoc networks are divided into the following; proactive, reactive and hybrid routing protocols. Different types of routing protocols for ad-hoc networks are proposed by network designers and researchers to enhance the performance of ad hoc networks by finding the shortest and efficient route establishment between two nodes for message delivery. To evaluate and compare the performance of routing protocols, a number of performance metrics are used. Each of these methods has its own properties and is suitable for a specific application type.In this study, five well-known ad hoc routing protocols (OLSR, AODV, TORA, DSR, and GRP) are analyzed and compared according to their performance using FTP (low, high) and HTTP (light, heavy) applications. Routing protocols are analyzed with respect to the following metrics; the number of nodes and mobility speed. Forivcomparison among the mentioned protocols, end-to-end delay and throughput are measured and used.OPNET simulator version 14.5 is used to model and simulate ad hoc networks. The results of experimental simulations show that OLSR has better performance than the other protocols. With OLSR protocol, the time that is required to transfer a packet from source to destination is less than the time taken by AODV, TORA, DSR, and GRP. AODV is better than OLSR in low-density networks and low mobility speed in some cases. AODV is again better when a few nodes are communicating. On the other hand, normalized routing load of OLSR is getting up compared with AODV when the numbers of communicating nodes are increasing with all mobility speed


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