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Proposed Routing for IEEE 802.11S WMN

Proposed Routing for IEEE 802.11S WMN. Michael Bahr, Siemens Corporate Technology Presented By: Alireza Moghaddam. Overview. History Routing in 802.11s HWMP Reactive/Proactive Routing Hybrid Routing RA-OLSR Summery. History. Drafts Draft D0.01: March, 2006 (First Draft)

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Proposed Routing for IEEE 802.11S WMN

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  1. Proposed Routing for IEEE 802.11S WMN Michael Bahr, Siemens Corporate Technology Presented By: Alireza Moghaddam

  2. Overview • History • Routing in 802.11s • HWMP • Reactive/Proactive Routing • Hybrid Routing • RA-OLSR • Summery

  3. History • Drafts • Draft D0.01: March, 2006 (First Draft) • Draft D1.0: Dec, 2006 • Draft D1.06: July, 2007

  4. Example of IEEE 802.11s

  5. Routing • Necessary HWMP routing • Reactive Routing • Proactive Routing • Optional RA-OLSR

  6. Routing • Based on MAC address. • Uses radio-aware routing metric. • Unicast, Multicast and Boradcast. • Path Selection vs. routing. • Single/Multiple radio devices.

  7. Frame Extension • Extension of 4-address frame. • MAC layer is amended. • Physical Layer stays intact. • Compatible with other layers. • Mesh security is based on 802.11i.

  8. Routing

  9. HWMP • Foundation: Adaptation of RM-AODV • Default routing protocol for IEEE 802.11s • Reactive/proactive routing components. • Used in IEEE 802.11s because • Mobile Nodes • Static Nodes

  10. Reactive routing • Definition • Based on AODV and DSR • MAC-LAYER and RA-Metric • RREQ, RREP, RERR messages.

  11. Proactive Routing • Def: Maintain routes to all destinations • Why Proactive routing? • Registration/Non-registration Modes

  12. Non-Registration Mode • RANN messages • Nodes have path to root • Root has no information about children

  13. Registration Mode • Each node has registers itself to the root. • Nodes have Path to the root • Root has list of all nodes inside network.

  14. Hybrid Routing • Precondition for Hybrid Routing • How does it work?

  15. Hybrid Routing

  16. Hybrid Routing

  17. Hybrid Routing

  18. HWMP

  19. RA-OLSR • Optional proactive routing protocol of the emerging IEEE 802.11s framework. • Adaptation of OLSR • Routing Metric: Radio-Aware • Use of Mac instead of IP • Why RA-OLSR?

  20. RA-OLSR

  21. RA-OLSR • Multi-Point Relays Selection Criteria • Hello Messages • Advantages • Disadvantages

  22. Summery • 802.11s is a standard for WMN • Uses a Hybrid Routing • Reactive/Proactive/RA-OLSR • It’s NOT complete yet.

  23. Questions

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