Optimization of Multicast Routing Protocols in Wireless Mesh Networks

Abstract

Wireless Mesh Networks (WMNs) is a new generation of networks that has appeared recently. Multicast is an efficient way to distribute data to a group of receivers, this technique suffer from lots of problem and many challenges need to be solved. In this thesis, we propose newlineand#61623; A new protocol named MESHSPT (Shortest Path Tree algorithm for Wireless Mesh networks) for efficient and scalable multicast routing inside the mesh backbone of a WMN. The MESHSPT protocol builds source-based trees based on the network topology. This protocol avoids the most problems in multicast technique: flooding and the problems of implosion and exposure during a tree constructed and during the joining, leaving nodes. newlineand#61623; A new cross layer protocol named MRMP (Mesh Reliable Multicast Protocol) based on reliability works between network layer (multicast routing) and transport layer (reliability). A recovery tree built dynamically which is joining with the multicast routing tree. newlineand#61623; A new Multi-Objective model for optimization multicast load balancing in wireless mesh network. This model called Path-Mesh-Router-Gateway load balancing (PMRGLB), which aims to achieve four objectives, i.e. minimizing gateway load balancing, minimizing path interference, minimizing the total cost of the network, and minimizing path length. A meta-heuristic method used simultaneously with this optimization problem. newlineand#61623; A new protocol to optimize the QoS based on Multiple Trees (M-Trees) called MTQOSM (Multiple Trees Quality of services Multicast) which maintains the maximum node-disjoint by using a distributed online heuristic. newlineand#61623; A new framework supports the connectivity between Mesh backbone and Internet. newline