Hamza Aytaç DOĞANAY, Abdullah ORMAN, Murat DENER

MANET’lerde Hareketliliğin AODV, DSR ve DSDV Protokollerinin Performansına Etkisi

Kablosuz Sensör Ağlardaki (KSA) sensör düğümlerinde olduğu gibi MANET düğümlerinde de gönderdikleri veri paketlerinin hedef düğüme ulaşabilmesi için rota bilgisine ihtiyaç duyulur. Rota bilgisi verimlilik, gecikme, paket iletim oranı, paket düşme oranı ve enerji gibi performans kriterleri göz önünde bulundurularak proaktif ve reaktif yönlendirme protokolleri kullanılarak sağlanır. Proaktifyönlendirme protokollerinde rota bilgisi tablo tabanlı olarak oluşturulurken reaktif yönlendirme protokollerinde rota bilgisi istek tabanlı olarak oluşturulur. Hareketlilik unsuru olarak hızın değişmesi,yönlendirme protokollerinin performansını olumlu veya olumsuz şekilde etkiler. Bu çalışmada AODV ve DSR reaktif yönlendirme protokolleri ve DSDV proaktif yönlendirme protokolünün verimlilik, gecikme, paket iletim oranı ve paket düşme oranı metriklerinde seçilen farklı hızlarda nasıl performans gösterdiklerine ilişkin NS2 simülasyon ortamında çalışma gerçekleştirilmiş ve en iyi performans gösterenin hangisi olduğunun tespiti amaçlanmıştır. AODV protokolünün en performanslı olduğu hız biriminin 10 m/sn (36 km/s) olduğu, DSDV ve DSR protokollerinin ise en performanslı olduğu hız biriminin 5 m/sn (18 km/s) olduğu görülmektedir. Bunun yanında seçilen hızların ara hızları da MANET’te önemlidir. Bu öneme istinaden mevcut çalışmada karşılaştırmaya dahil edilmemekle birlikte ilerleyen çalışmalarda kullanılmak üzere aynı simülasyon parametreleri ile 6, 7, 8 ve 9 m/sn hızlardaki performans ölçümleri de sunulmuştur.

Anahtar Kelimeler:

AODV, DSDV, DSR, NS2, reaktif ve proaktif yönlendirme teknikleri

The Effect of Mobility in MANET on the Performance of AODV, DSR and DSDV Protocols

Between MANET nodes as between Wireless Sensor Networks (WSN) nodes, route information is needed for the data packets sent by the sensor nodes to reach the target node. Route information is provided using proactive and reactive routing protocols, considering performance criteria such as efficiency, delay, packet transmission rate, packet drop rate and energy. In proactive routing protocols, route information is created on a table-based basis, while in reactive routing protocols, route information is created on a request basis. Change in speed as a mobility factor affects the performance of routing protocols positively or negatively. In this study, an experiment was carried out in the NS2 simulation environment on how AODV and DSR reactive routing protocols and DSDV proactive routing protocol perform at different selected speeds in efficiency, delay, packet transmission rate and packet drop rate metrics, and it is aimed to determine which one is the best performer. It is seen that the speed unit with the highest performance of the AODV protocol is 10 m/s (36 km/s), while the speed unit with the most performance of the DSDV and DSR protocols is 5 m/s (18 km/s). In addition, speed points between the selected speeds are also important in MANET. Due to this importance, performance measurements at 6, 7, 8 and 9 m/sec speeds are also presented with the same simulation parameters to be used future works, although they are not included in the comparison in the current study.

Keywords:

AODV, DSDV, DSR, NS2, Reactive and proactive routing protocols,

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