Abstract
In catastrophic scenarios, rescue teams need to communicate with each other without any fixed infrastructure while moving, such as search and rescue, firefighter, police, and tactical networks i.e. MANET. In these scenarios Mobile Ad hoc Networks (MANETs) can supports immediately Voice Over Internet Protocol (VoIP) service to be used, with fast deployment, low cost, and flexibility during movement. Recently the new mobile devices support the new frequency of IEEE 802.11n 5GHz that gives better performance requirements to MANET, with enhanced Quality of Service (QoS) and bandwidth (B.W). This paper will calculate and improve VoIP service in MANET that operates under IEEE 802.11n 5GHz frequency, with comparing two main routing protocols AODV and OLSR, and analyzing some QoS requirement such as end-to-end delay, throughput, and retransmission attempts using Network Simulator (NS2).
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