Multicast operation of the ad-hoc on-demand distance vector routing protocol
MobiCom '99 Proceedings of the 5th annual ACM/IEEE international conference on Mobile computing and networking
Scalable routing protocols for mobile ad hoc networks
IEEE Network: The Magazine of Global Internetworking
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MANETs (Mobile Ad-hoc Networks) are autonomous networks operating either in isolation or as stub networks connected to a fixed network. They do not necessarily rely on existing infrastructures. When the mobile nodes need one-to-many or many-to-many communication then multicasting is employed. Two of the best multicast protocols, MAODV (Multicast Ad-hoc On-demand Distance Vector Routing Protocol) and ODMRP (On Demand Multicast Routing Protocol), are compared. The performance measures to be evaluated are the PDR (Packet Delivery Ratio) and the Latency. This paper investigates two problems: i) does nodes partitioning into sub-groups improve performance? and ii) what is the best number of sub-groups? Three different movement scenarios are examined: i) Random movement, where all nodes move unpredictably in the area, ii) Directed movement, where the nodes move freely along the x-axis but directionally from y(0, 0) to y(0, 2000) along the y-axis, and iii) Directed II, where the nodes move as in the Directed movement and the subgroup leaders communicate with each other. Two different speed values are also examined: i) 1 m/s (average walking speed), and ii) 10 m/s (slow vehicle speed).