Performance Comparison Of Single And Multipath Routing Protocols For Mobile Ad-hoc Networks

Mobile ad hoc networks are communication networks built up of a collection of mobiledevices which can communicate through wireless connections. These mobile hosts frequentlyform a network topology without any centralized administration. Each node will act as a hostas well as a router and the data packets should be forwarded among the nodes. In order toforward the packet, routing protocols are needed. An ad-hoc network has certain features thatimpose new demands on routing protocols. The challenges of directing data packets from asource node to a given destination is particularly hard in Mobile Ad-hoc Networks(MANETs), due to the mobility of the network elements and the lack of the central control,robustness, adaptability in routing algorithms, and self organizing. A key challenge in suchnetworks is to design dynamic routing protocols that are efficient and consume less overhead.In this thesis we presented performance comparison of single and multipath reactiverouting protocols Ad-hoc On-demand Distance Vector (AODV) and Ad-hoc On-demandMultipath Distance Vector (AOMDV). They are compared using four metrics: average end toend delay, packet delivery fraction, normalized routing load and throughput. An extensivesimulations using NS-2simulator is performed. The simulation has been done with variouspause time and maximum connection.