MobiMESH: Introduction to Wireless MESH Networks


Published on

Introduction to Wireless MESH Networks and the MobiMESH project at Politecnico di Milano

  • Be the first to comment

No Downloads
Total views
On SlideShare
From Embeds
Number of Embeds
Embeds 0
No embeds

No notes for slide

MobiMESH: Introduction to Wireless MESH Networks

  1. 1. Wireless MESH Networks and the Mobimesh Project Antonio Capone
  2. 2. Summary • Introduction to WMNs • Application Scenarios • The Mobimesh Project • Ongoing R&D Activities
  3. 3. Ad hoc Networks: myth and reality • Mobile Ad hoc Network (MANET) relay source destination relay – Huge research effort (~330.000 scientific papers published – source Google Scholar) – Only few real applications
  4. 4. “Sons” of ad hoc Networks AD HOC Wireless Mesh Wireless Sensor Vehicular Area Networks (WMN) Networks Networks (VANET) (WSN)
  5. 5. The Evolution Path Toward WMNs Eth • The problem: In er n et many applications creating a wired infrastructure for wireless access networks, like traditional WLAN WiFi, is not possible or too expensive • Solution: Replacing wired infrastructure with wireless links
  6. 6. The Evolution Path Toward WMNs (contd) First possible solution: Wireless Distribution System • Manual configuration of wireless links • Can be used only with small size networks
  7. 7. The Evolution Path Toward WMNs (contd) Wireless networks of point-to- point links • Use of point-to-point links based on traditional technologies (e.g. SDH) or low cost ones (WiFi, Hiperlan) Weaknesses: • Solution adopted by several • Very low flexibility WISPs and system integrators • Complex configuration • Two possible architectures: like with WAN – Non-meshed topologies • No support for nomadic – Meshed topologies with IP users based routing (e.g. OSPF)
  8. 8. The “true” Wireless Mesh Networks Internet Internet • Mesh routers (MRs) mesh manage routing gateway automatically based on ad hoc network technologies • Devices are flexible and self-configuring mesh • All or a subset of MRs act router as access points (Wi-Fi hot spot) mesh • Some devices are the client gateways to the Internet Access Link Backhaul Gateway Link
  9. 9. Advantages of WMNs • Not only wireless access but also wireless infrastructure • The only viable solution in most of the application scenarios • Probably the best in all cases under the cost/flexibility perspective WMNs deployment • Ease up time-to- deployment • Reduced CAPEX/OPEX
  10. 10. Applications • Large range of application scenarios where creating a wired infrastructure is not possible or cost effective – Municipal wireless networks – Temporary networks – Industrial networks – Retrofits – Surveillance – Environmental monitoring – Traffic control and driver assistance
  11. 11. MuniWireless • A new emerging application area of wireless networks • Tremendous interest worldwide • Public utility services as distinguishing feature • Local governments and authorities as new actors for building up infrastructures and providing services Big cities Medium-small cities Solution to digital divide
  12. 12. MuniWireless Services Deployment of a city-wide pervasive wireless network for offering a large set of services to public agencies, local police, fire dept, citizens, shops, local companies, and visitors. Metropolitan Area Network One network many services Virtual LAN for public Virtual LAN for Virtual LAN for security public access public utility services Pollution mapping and Citizen mobility Tourist services E-health control … management Support servuces Parking lots Video Surveillance for Police, Fire management Traffic control Public Access Depts, etc. … and many others The wireless network as a key enabler for a large set of value-added public-utility services for the community.
  13. 13. Safety and Security • Surveillance of public areas and buildings • Support to communication of public security officers (police, fire dept, etc.) and rescue teams • Civil protection Wireless Sensor & Actor MESH Network Network Ad hoc network
  14. 14. E-Health • Remote monitoring of patients and elderly people • Alarms management • Control of drug delivery • Improvement of life quality through movement freedom
  15. 15. Environmental Monitoring • Integration of WMNs with sensor networks for remote sensing and control of large areas, buildings, bridges Wireless MESH Network Sensor & Actor Network Multimedia Human actor sensor agent
  16. 16. Industrial Networks • Retrofit of existing plants • Off-shore plants • Large areas coverage • Diagnostics • Monitoring
  17. 17. Temporary networks • Wireless connectivity for temporary events – Fairs – Expositions – Sport events – Festivals • Fast deployment/dismissal • Easy configuration and Power supply management with solar panels
  18. 18. Experimental Projects in the Academic Labs • MIT Roofnet – First experimental project – Low cost HW – Software open-source • Other projects – GeorgiaTech BWN-Mesh – Rice University – Rutgers Winlab ORBIT – SUNY Stonybrook Hyacinth – MobiMESH PoliMI • Several academic projects have contributed to the commercial exploitation of the technology
  19. 19. MobiMESH Project • Started by ANTLab, Politecnico di Milano in 2004 • Initial goal: – Create an experimental platform for testing innovative solutions for routing, mobility management, network MobiMESH first prototype configuration and management • Soon coupled with the goal of: – Designing advanced mesh networking solutions and products for the market – Thanks to the interest and support of VoiSmart
  20. 20. MobiMESH Project • Mobimesh is now a complete Wireless Mesh platform: – Node automatic configuration – Fast adaptive routing – Full support of multi-radio multi- frequency operation – Frequency aware and quality-aware route selection Demo presented at: – Mobility management - ACM MobiHoc 2006, - IEEE MASS 2007 – Network management (major international – Security conferences on ad hoc and mesh networks)
  21. 21. Bagnara Calabra • Fast track deployment: 2 weeks to go-live • Broadband and excellent VoIP services • 1+1 Mesh Gateway • 8 Mesh Routers • 5 GHz CPE’s access • Redundant configuration
  22. 22. R&D Activities Our strength: Ability to develop new Our strength: Ability to develop new features and tailor the product to features and tailor the product to customer needs in short time customer needs in short time
  23. 23. R&D Activities • Product evolution and additional features (available next few months) – MHIR (Mobimesh hierarchical routing): Optimization of routing and mobility management for very large networks (thousands of nodes) – MAFRA (Mobimesh Automatic Frequency Assignment): completely automatic and adaptive frequency assignment – M4 (MobiMesh Mobility Management): improved and scalable mobility management with < 10ms switch over time
  24. 24. R&D Activities • New projects (ongoing) – MobiSens: heterogeneous mesh network for sensing and control applications with programmable interfaces based on an overlay architecture Prototype already available Prototype already available Overlay Network Wireless MESH Network Sensor Network
  25. 25. R&D Activities • New projects (ongoing) – MobiVANET: Integrated mesh and mobile ad hoc network for vehicular applications Live demo in Autumn Live demo in Autumn Joint project with: Univ. of California at Los Angeles (Prof. Mario Gerla)
  26. 26. R&D Activities IP Backbone • New projects (ongoing) Wireless F.O. Medium Voltage – HIMESH: hybrid mesh Cell network with wireless Cluster and power line links MV Master MV Slave LV Master LV Repeater LV LV LV Master Master Repeater LV LV Repeater RepeaterLV LV BPL Repeater Repeater Access Low Voltage Cell Low Voltage Low Voltage Cell Cell
  27. 27. Thanks Antonio Capone Politecnico di Milano,