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Multipath Routing in Wireless Mesh Networks

Multipath Routing in Wireless Mesh Networks. Mobile Adhoc and Sensor Systems (MASS), 2006 IEEE International Conference on Author: Nagesh S. Nandiraju, Deepti S. Nandiraju, and Dharma P. Agrawal. Outline. Introduction MMESH Traffic balancing Performance Evaluation Conclusion.

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Multipath Routing in Wireless Mesh Networks

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  1. Multipath Routing in Wireless Mesh Networks Mobile Adhoc and Sensor Systems (MASS), 2006 IEEE International Conference on Author: Nagesh S. Nandiraju, Deepti S. Nandiraju, and Dharma P. Agrawal

  2. Outline • Introduction • MMESH • Traffic balancing • Performance Evaluation • Conclusion

  3. Introduction(1/2) • Wireless Mesh Networks are envisioned to support the wired backbone with a wireless backbone for providing internet connectivity to residential areas and offices. • Routing protocols designed for Mobile Adhoc Networks (MANETs) primarily concentrate on finding a single best possible route to any destination out of the various paths available.

  4. Introduction(2/2) • However in wireless mesh networks, traffic is primarily routed either towards the Internet Gateways (IGWs) or from the IGWs to the Access Points (APs). • Thus, if multiple APs choose the best throughput path towards a gateway, the traffic loads on certain paths and mesh routers increases tremendously thereby deteriorating the overall performance of the network.

  5. Multi-path routing in wireless meshnetworks (MMESH)(1/3) • Multipath routing is the routing technique of using multiple alternative paths through a network, which can yield a variety of benefits such as fault tolerance, increased bandwidth, or improved security.

  6. Multi-path routing in wireless meshnetworks (MMESH)(2/3) • This method provides better transmission performance and fault tolerance by providing: -Simultaneous, parallel transport over multiple carriers. -Load balancing over available assets. -Avoidance of path discovery when re-assigning an interrupted stream.

  7. Multi-path routing in wireless meshnetworks (MMESH)(3/3)

  8. Traffic balancing • Once we have these multiple routes setup, our task is to divide the traffic among these routes to balance the load, without degrading the performance. - Round Robin scheduling - Congestion aware routing

  9. Performance Evaluation

  10. Conclusion • This paper introduces the important propose a proactive multipath routing protocol which exploits the multiple routes between the MRs and the gateways to balance traffic load. • Simulation results reveal that single path routing leads to severe packet loss and consequently very low end –to-end throughput for longer hop length flows.

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