Abstract:
Recently, multicast routing protocols become increasingly important aspect in Mobile Ad hoc
Networks (MANETs), as they effectively manage group communications. Meanwhile,
multimedia and real-time applications are becoming essential need for users of MANET. Thus
it is necessary to design efficient and effective Quality of Service (QoS) multicast routing
strategies. In this paper, we address the scalability problem of multicast routing protocols to
support QoS over MANETs. In particular, we introduce a Position-Based QoS Multicast
Routing Protocol (PBQMRP). Basically, the protocol based on dividing the network area into
virtual hexagonal cells. Then, the location information is exploited to perform efficient and
scalable route discovery. In comparison with other existing QoS multicast routing protocols,
PBQMRP incurs less control packets by eliminating network flooding behavior. Through
simulation, the efficiency and scalability of PBQMRP are evaluated and compared with the
well-known On-Demand Multicast Routing Protocol (ODMRP). Simulation results justify
that our protocol has better performance, less control overhead and higher scalability.
