Mobile ad-hoc network (MANETs) are networks consist of a group of mobile nodes autonomously establishing connectivity via multi-hop wireless communication without any pre-infrastructure or central administration. udMulticasting communication serves as one critical operation to support many applications of Ad-hoc networksudthat achieve group communication rather than pairs of individuals. Multicast routing protocols becomesudincreasingly important in mobile Ad hoc networks because they effectively coordinate a set of nodes. Also, itudprovides efficient routing for multimedia applications such as video conferences, military, rescue operationsudand multi-party games. Such applications are highly demand for Quality of Service (QoS), which makes anudefficient QoS multicast routing protocols is very important. The limitations of wireless networks make itudnecessary to develop a QoS multicast routing protocol that supports multiple QoS constrains with rationaludoverhead. Recently, the availability of inexpensive, less power and small GPS receivers realizes the positionbasedudmulticast routing and improves routes stability. In this work we proposed a model that searches for QoSudpaths from a single source to a set of destinations. The physical area is partitioned into equal size hexagonaludcells and a leader and backup leader nodes is elected to maintain up-to-date information about the networkudtopology. The election process considers several metrics including node mobility, energy and memory. Theudmulticast groups are separated into segments based on their geographical positions and each multicast groupudhas a coordinator. The proposed model is expected to be scalable for large area networks with large number ofudmulticast members. Also, it is expected to achieve a significant reduction in packet and processing overhead.ud
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