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AntNet :Routing in Communication Networks

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Normal queue. Forward ant ?? ? ???? ??? ???? ?? ?? ???? ?? ... ???? queuing ????? ?? forward ant ?? ?????? ???? ??? ???? ?? ?? ?? high priority queue ?? ????? ... – PowerPoint PPT presentation

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Title: AntNet :Routing in Communication Networks


1
??????? ????????????? ????? ????? ?? ????? ?????
?? ?? ???????? ???? ??? ?????????
  • AntNet Routing in Communication Networks

Mohammad Sadegh Makarem Fall 2003
2
????? ?????
  • ????? ?? ???????? ?? ???? ??? ?????????
  • ??? ???? (swarm Intelligence)
  • ???????? ?? ????? ?? ????? ????? ??
  • AntNet CL
  • AntNet CO
  • ???? ???? AntNet CO
  • ?????? AntNet ?? ?????? ????? ????????

3
????? ?? ???????? ?? ???? ??? ?????????
  • ??????? ???? ?? ??? ???? ??? ???????
  • ?????? ??????
  • ?????? ????? ???
  • ???????? ???? ?? ??????? ?????? ????????
  • Throughput
  • Average Delay of packets
  • ????? ??? ????? ????????
  • ??? ????? (Stochastic)
  • ?????? (Dynamic)

4
????? ?? ???????? ?? ???? ??? ?????????(?????)
  • ???? ?????? ????? (RIP ,OSPF)
  • ????? ??? (Load Balancing)
  • ??????? ??????(Traffic Oscillation)
  • ????? ??????? ?????? ?? ???? ????? ? ?????? ??
    ????
  • Q-Learning
  • Ant Colony Systems

5
??? ???? (swarm Intelligence)
  • Emergent Intelligence
  • ??????? ???? ? ????? ? ???? ????? ?? ???? ? ?????
    ?? ???? ? ????? ?? ?? ????? ???? ????????? ??
    ???
  • ??? ??????? ????? ????? ???? ????? ????? ????? ??
    ?????
  • ????? ?? ????? ?? ????? ?????? ? ????????? ???? ?
    ???? ??? ????? ???? ????? ???? ??? ?????? ???
  • ??? ??? ??????? ??? ????? ?? ????? ????? ? ???
    ??? ???? ?? ????? ?????
  • Stigmergy ???? ???? ?? ???????
  • ?????? ?? ????? ????
  • ???? ???? ??????? ??
  • ???? ???? ????? ???? ????? ??

6
??? ???? (swarm Intelligence) (?????)
  • ??????? ?? ??? ???? ?? ?? ???? ?? ????
  • ????? ?????(scalability)
  • ??????? ????? ??? ???????
  • ??? ?????(Fault tolerance)
  • ??? ???? ????? ??????
  • ?????? ????? ????? ??????
  • ???? ?????? ?????
  • ????? ????? (modularity)
  • ?????? ???? ????? ???? ?? ????? ????? ????
  • ?????? ?????

7
??? ???? (swarm Intelligence) (?????)
  • ????????
  • Ad-hoc wireless network
  • Robotic
  • Optimization
  • Routing

8
???????? ?? ????? ?? ????? ????? ??
  • ???? ???? ????? ?? ???? ????
  • ????? ???? ??????? ?? ???? ????? ?????
  • ?????

9
???????? ?? ????? ?? ????? ????? ?? (??????)
  • Ant-Based Control ?? ???? ??? ????
  • Agent-Based Routing System (ARS)
  • ?????? ????? ?? ????? ????
  • AntNet routing ????? ??? ???? Dorigo Caro
  • AntNet CL
  • AntNet CO

10
AntNet CL
  • Forward Ant and Backward Ant
  • ?????? (1.0) ????? ??? ?? ??? 1997 ???? Dorigo
  • ?? ???? ??????? ?? ???? ?? ???? ???? (?? ???
    ????) ?? ???? ???? ????.
  • ????? ?? ??????? n ?????? ??? ?? ???? ?? ????
    ??????? ?? ???
  • ??????? ? ??????? ?? ?? ????? ???? W ?????? ??
    ???

11
AntNet CL
  • ?? router ????? 2 ?? ?? ????
  • High priority queue
  • backward ant?? ?? ?? ???? ?? ?????
  • Normal queue
  • Forward ant ?? ? ???? ??? ???? ?? ?? ???? ?? ?????

12
AntNet CL (?????)
  • ?? ant ????? ?? ???? ???
  • ?? ???? ???? ??? ant ?????
  • Forward ant ?? ???? ?? ??? ???? ???? ?? ??? ?
    ??????? ???? ?? ?? ???? ??? ????? ?? ???.
  • Backward ant ?? ???? ?? ??? ???? ??? ?????? ?
    ????? router ?? ?? ???? ?? ???

13
AntNet CL (?????)
  • ?? ??? ???? ???? ?? AntNet 1.0

14
AntNet CL (?????)
  • ?? ??? ???? ???? ?? AntNet 2.0

Jacobson/Karels
15
AntNet CL (?????)
  • Ant ?? ?? ???? ??? ???? ?????? ?? ????? ?????
    ??????? ?? ????
  • ?????? ???? ?? ?? ???? ???
  • ???? ???? ???? ?? ???? ?? ??? ???? linkkj

16
AntNet CO
  • ???? queuing ????? ?? forward ant ?? ?????? ????
    ??? ???? ?? ?? ?? high priority queue ?? ?????
  • ???? ?????? ????? ??????? ?????? ?? ????

17
???? ????
  • ????? ??????
  • Session based
  • ??? ?????? ?? Session ?? ???? ?????????? ?????
    ????? ?? ???
  • ????? ? ???????
  • ????? Session
  • Session Life Time
  • Throughput
  • ??? ???? ???? ? ???? ?????

18
?????? ?? ?????? ?????
h number of hosts r number of routers n
rh l number of point-to-point links d diameter
of the network e average number of link per
router
19
????? ???? ????
  • ?????? ???? ???? Throughput
  • ?????? Delay ?? ?????? ???
  • ????? ????? ??? ?? ???? ???? ???? ?? ?????
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