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Multicast Routing on Wireless Mesh Networks

Abbasi, Reza | 2011

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  1. Type of Document: M.Sc. Thesis
  2. Language: English
  3. Document No: 41977 (52)
  4. University: Sharif University of Technology, International Campus, Kish Island
  5. Department: science and engineering
  6. Advisor(s): Yazdani, Naser
  7. Abstract:
  8. Wireless mesh networks (WMN) appeared as popular communication networks supporting high speed and high throughput applications. They consist of mesh routers and mesh clients and they have unique characteristics like self organizing and self configuring of the mesh nodes that bring a great deal of efficiency, reliability and robustness to networks and decreases networks maintenance cost notably. Also WMNs provide an integration of different types of wireless networks by exploiting the gateway involvement. One of the important group communication technologies that offers high level of bandwidth conservation and efficiency is multicasting. It also decreases the cost of communication compared to unicast transmission, especially for WMNs. In spite of considerable application support, and increasing user’s demand, there are many research challenges that arise by applying the multicast communication over wireless mesh networks. So we have chosen to work on this research topic and explore the related issues to solve them. One of the issues of routing schemes especially for multicast communication is the path selection approach for multicast data packet forwarding. We proposed the Load Balancing Short path Multicast (LBSM) which tries to balance the traffic load of the network, and simultaneously, provides short paths. Our method is a tree based multicast routing scheme and uses the gateway nodes as the central management points to select the best paths for multicast data. We simulated our proposed method using the Network Simulator 2 (NS2) and compared it with the MAODV and ODMRP protocols to evaluate our design. The results show that the LBSM provides higher throughput, lower end to end delay and lower jitter value for multicast packet delivery compared to the MAODV and ODMRP as the multicast group size growth. According to these results, high-throughput real-time group communication can be achieved with LBSM. Also our method imposes lower routing maintenance and control messages overhead which results in lower route latency
  9. Keywords:
  10. Routing ; Multicast ; Wireless Mesh Network ; Traffic Balancing ; Short Path

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