An Implementation of MOLSR Routing Protocol in MANET

Nowadays multicasting is very popular in military battlefield communication, rescue operations, conferencing, and multi-user games etc. To ensure broad popularization of these applications, they should be available irrespective of time and place. Because wireless mobile ad hoc network is automatically able to create a wide wireless network, which can expand an existing wired network, they are an ideal solution to support this concept of multicast at anytime and anywhere. Many protocols are proposed for mobile ad hoc network which provide multicast services. The internal mechanisms may differ but all protocols achieve the same goal i. e. reliable and efficient multicast packet delivery. Multicast packet delivery paths tend to become sensitive with respect to mobility. When they are optimized for bandwidth and become unsuitable with respect to bandwidth, when designed to be elastic to the dynamic nature of network. To improve the efficiency and reliability the MPRs (multi point relays) selection mechanism of OLSR is used. Our main approach is to build multicast delivery routes using multi point relays to transmit multicast packets from multicast source to group members. Simulation result shows that the proposed algorithm improves the reliability of network.