Design and investigation of scalable multicast recursive protocols for wired and wireless ad hoc networks

Chapter 5

SCALABLE RECURSIVE

MULTICAST PROTOCOLS IN

MOBILE ENVIROMENTS

This chapter introduces the mobility feature over the scalable recursive multicast protocol
(SReM). A mobile scalable recursive multicast protocol (MoSReM) and a scalable ad hoc
recursive multicast protocol (SARM) are proposed. It starts with a description of each of
the proposed protocol, followed by a detailed description for the membership
management and branching nodes selection as critical features. Then, data structures of
the proposed protocols are discussed. Finally the simulation results are presented and
discussed.

5.1 Introduction

Multicast schemes provide a very useful mechanism to satisfy group communication with
efficient bandwidth utilization. In particular, multicasting is an important scheme in
wireless and wireless ad hoc networks because many wireless applications depend on
group communication with bandwidth constraints in these networks.

Different categories of multicast protocols have been proposed in the literature review for
ad hoc environment, including Tree-based, Mesh-based and Explicit approaches. These
categories have been discussed in details in the literature review chapter (Chapter 3) of
this thesis. This chapter introduces two protocols called; mobile scalable recursive
multicast protocol (MoSReM) where we consider mobility feature at the edges of the
network and a scalable ad hoc recursive multicast protocol (SARM) where the mobility
feature is considered at all the nodes in the network.

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