Joining Delay, Packet Delivery and Limitations of EGMP

To implement this group communication, we propose an Efficient Geographic Multicast Routing protocol (EGMP) with the help of virtual zone based structure. In this paper, we proposed a novel Efficient Geographic Multicast Protocol (EGMP). A network wide zone-based bi-directional tree is used to achieve efficient membership management and multicast delivery. In Efficient EGMP an efficient distributed algorithm is used, that support dynamic changes to the multicast group during tree building and allows overlapping join/leave operations. EGMP uses a hierarchical structure to implement scalable and efficient group membership management. And a network-range zone-based bi-directional tree is constructed to achieve a more efficient multicast delivery. EGMP does not depend on any specific geographic unicast routing protocol. Our simulation results demonstrate that EGMP has high throughput, high packet delivery ratioand low flow blocking compared to AOMDV and is scalable to both group size and network size