Abstract—The group-oriented services are one of the primary application classes that are addressed by mobile ad hoc networks (MANETs) in recent years. To support such services, multicast routing is used. Thus, there is a need to design stable and reliable multicast routing protocols for MANETs to ensure better packet delivery ratio, lower delays and reduced control overheads. In this paper, we propose a mesh based multicast routing scheme that finds stable multicast path from source to receivers. The multicast mesh is constructed by using route request and route reply packets with the help of multicast routing information cache and link stability database maintained at every node. The stable paths are found based on selection of stable forwarding nodes that have high stability of link connectivity. The link stability is computed by using the parameters such as received power, distance between neighboring nodes and the link quality assessed using bit errors in a packet. The proposed scheme is simulated over a large number of MANET nodes with wide range of mobility and the performance is evaluated. It is observed that proposed scheme produces better packet delivery ratio, less control overheads and reduced packet delay compared to on-demand multicast routing protocol (ODMRP).

Index Terms—MANET, multicast routing, stable forwarding node, routing information cache, link stability database.

Rajashekhar Biradar and Sunilkumar Manvi are with the Department of Electronics and Communication Engineering and Mylara Reddy is with the Department of Information Science and Engineering. All three authors are with Reva Institute of Technology and Management, Bangalore-560064,India. (Phone number: +91-80-65687563)e-amil: {raj.biradar, sunil.manvi, mylarareddy}revainstitution.org

Cite: Rajashekhar Biradar, Sunilkumar Manvi and Mylara Reddy, "Mesh Based Multicast Routing in MANET: Stable Link Based Approach," International Journal of Computer and Electrical Engineering vol. 2, no. 2, pp. 371-380, 2010.