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QoS Multicast Routing in Wireless Mesh Networks

Kharraz, Mohammad Amin | 2009

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  1. Type of Document: M.Sc. Thesis
  2. Language: English
  3. Document No: 40206 (52)
  4. University: Sharif University of Technology, International Campus, Kish Island
  5. Department: Science and Engineering
  6. Advisor(s): Sarbazi Azad, Hamid
  7. Abstract:
  8. Multicasting has gained a lot of research attentions in facilitating group communications in wireless networks. Applying multicast mechanisms in Wireless Mesh Networks, brings a lot of benefits to these networks. In our research, we have introduced Cost-aware On-Demand Multicast Routing Protocol (C-ODMRP) as an extension of ODMRP that supports QoS provisioning for high quality applications in WMNs. In C-ODMRP, the nodes are prevented from applying the links that do not meet the QoS requirements. The multicast receivers are provided with resource-aware information to efficiently compute the cost of the routes when multiple routes from source to destination nodes are established. C-ODMRP takes advantage of mesh architecture and path redundancy while decreasing packet overhead and traffic congestion. C-ODMRP selects efficient routes while avoiding over-utilized and non-QoS support links from source to destination nodes. C-ODMRP is compared to original ODMRP and MAODV routing protocols subjected to multicast group size, number of source nodes and multicast traffic load. C-ODMRP exhibits considerably good performance under various scenarios among the protocols considered. Simulation analysis reveals that C-ODMRP keeps the packet delivery ratio as high as original ODMRP while packet overhead is drastically reduced.

  9. Keywords:
  10. Routing Protocol ; Service Quality ; Multicast ; Wireless Mesh Network

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