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OMNET++ Mixnet Framework

OMNET++ Mixnet Framework. Yuping Dong 12/14/10. What is Mixnet and Why?. INET: wired and wireless protocols MiXiM : mobile and fixed wireless networks Mixnet : using both MiXiM and INET INET: Network layer and above MiXiM : 802.11NIC and mobility. What Mixnet can( not ) do?.

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OMNET++ Mixnet Framework

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  1. OMNET++ Mixnet Framework YupingDong 12/14/10

  2. What is Mixnet and Why? • INET: wired and wireless protocols • MiXiM: mobile and fixed wireless networks • Mixnet: using both MiXiM and INET • INET: Network layer and above • MiXiM: 802.11NIC and mobility

  3. What Mixnet can(not) do? • MiXiM NIC with INET IP stack • INET APP • MiXiM mobility modules • INET non-wireless NICs • Both blackboard modules • INET wireless modules • Exchange info between both blackboards

  4. Prerequisites • inet4mixnet http://github.com/mixim/inet4mixnet • MiXiM-2.0.1 sourceforge.net/projects/mixim

  5. Mixnet Modules • MixnetBridge • Connects INET network layer with MiXiM NIC • MixnetWorldUtility • Mapping between INET and MiXiM MAC addresses • Blackboard

  6. MixnetBridge • Registers NIC in INET’s ift • Converts INET control info to MiXiM control info • Forwards lower msg • Converts MAC addresses between INET and MiXiM • Stores MAC address pairs to MixnetWorldUtility

  7. MixnetWorldUtility • Extends blackboard functionality • Cross-layer info exchange • publisher -publish(BBItem)-> Blackboard -notify(BBItem)--> subscriber • Playground size, shape, dimension, etc. • Check connection manager

  8. Mixnet Nodes • IEEE802.11 nodes • IEEE802.15.4 nodes

  9. IEEE 802.11 Nodes

  10. IEEE 802.15.4 Nodes

  11. Network Layer • IP: Implements IP protocol • ICMP: • Relies on IP to send error msg, query msg. ping tool, traceroute. • IGMP: • Establish multicast group memebership • ARP: • Converts IP address to MAC address • ErrorHandling: • Error notification from other modules

  12. Mixnet Example: Ad Hoc Network • ConnectionManager: • Coordinates connection between all nodes. • Calculates max interference distance. • World: • Map INET MiXiM MAC address • Get PG size • Check connection manager • Configurator: • Configure IP addresses and routing tables. • Host: • IEEE802.11 hosts

  13. 4-Stage Initialization • Stage 0 • WorldUtility: get pg size • Register interfaces in InterfaceTable • MixnetBridge: • Map input output gates • Register MAC address pair • RoutingTable: • NF status

  14. 4-Stage Initialization • Stage 1 • RoutingTable: • Create per-interface IPv4 data structures • Read RoutingTable file & interface configuration • Set RouterId • WorldUtility: check connection manager

  15. 4-Stage Initialization • Stage 2 • Configurator: • Configures IP addresses and routing tables for a flat network • Assign IP addresses to hosts & routers • Calculate shortest paths • Add routes to routing tables

  16. 4-Stage Initialization • Stage 3 • RoutingTable: • Configure RouterId • Update routes

  17. Interface Table • Table of network interfaces • Protocol-independent properties only

  18. RoutingTable • RouterId empty for hosts • Loopback address as RouterId for routers

  19. Research Robots • SumoBot • iRobot

  20. SumoBot • Two SumoBot Robots wrestling. • BASIC Stamp microcontroller • Line sensors detect border • IR sensors detect opponent’s position • Breadboard on top, can extend apps • RS232 to communicate with host • Compatible RF transceiver, plug to breadboard • $239.99/set + $39.99/transceiver

  21. iRobot Create • USB communication • Can store 100 open interface commands • 30 built-in sensors • 25 pin expansion port • C++ programming • $219.99 each • Possible to wire the previous RF transceiver to iRobot Create • Can add parts to the slot

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