Abstract:
Nowadays, group communications over Mobile Ad
hoc Networks (MANETs) have received significant attention.
Multicasting plays an important role in simultaneous delivery
of information to group of receivers. Meanwhile, multimedia
and real-time applications are becoming essential needs for
MANET users. Thus, it is necessary to design efficient and
effective multicast routing protocol to support this type of
applications. Several efforts have been put to improve Quality
of Service (QoS) multicast routing. However, they do not
consider scalability issue. This paper introduces a positionbased QoS multicast routing protocol (PBQMRP). The main
objective of this protocol is to design a lightweight scalable QoS
multicast routing scheme irrespective of the number of
multicast members and network size. To achieve this, virtual
clustering strategy has been introduced. This strategy based on
partitioning the network into hexagonal cells and each cell is
represented by one powerful node. The proposed scheme
eliminates the duplicate packets between cells and reduces the
number of participating nodes. Simulation results show that
PBQMRP offers higher packet delivery ratio with significantly
low overhead compared to ODMRP Protocol.
