omnet++ mixnet framework
DESCRIPTION
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?. - PowerPoint PPT PresentationTRANSCRIPT
OMNET++ Mixnet Framework
Yuping Dong12/14/10
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?
• 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
Prerequisites
• inet4mixnet http://github.com/mixim/inet4mixnet
• MiXiM-2.0.1 sourceforge.net/projects/mixim
Mixnet Modules
• MixnetBridge– Connects INET network layer with MiXiM NIC
• MixnetWorldUtility– Mapping between INET and MiXiM MAC
addresses– Blackboard
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
Mixnet WorldUtility
• Extends blackboard functionality– Cross-layer info exchange– publisher -publish(BBItem)-> Blackboard -
notify(BBItem)--> subscriber– Playground size, shape, dimension, etc.– Check connection manager
Mixnet Nodes
• IEEE802.11 nodes• IEEE802.15.4 nodes
IEEE 802.11 Nodes
IEEE 802.15.4 Nodes
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
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
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
4-Stage Initialization
• Stage 1– RoutingTable:• Create per-interface IPv4 data structures• Read RoutingTable file & interface configuration• Set RouterId
– WorldUtility: check connection manager
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
4-Stage Initialization
• Stage 3– RoutingTable:• Configure RouterId• Update routes
Interface Table
• Table of network interfaces• Protocol-independent properties only
RoutingTable
• RouterId empty for hosts• Loopback address as RouterId for routers
Research Robots
• SumoBot• iRobot
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
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