Instructor

Prof. Yu Chansu, e-mail: c.yu91@csuohio.edu, Office: SH 437, phone: 2584, Office hour: TR 4-6pm

Course Information

Download here (including syllabus, grading policy, homework assignments, course schedule, etc.)

• Course home page is now open.
• Information on ns-2 from ISI
  
• The Network Simulator - ns-2
• Ns-2 documentation
  
• The Network Simulator: Building Ns
• Running Ns and Nam Under Windows 9x/2000/XP Using Cygwin
• Trace file format in ns-2
• Additional links on ns-2
• NS by Example from WPI
• Marc Greis' NS Tutorial
• Network Simulator 2 for Wireless : My Experience
• NS2.26 Sources Original Compound Index
• IEEE 802.11-1999 standard
  
• Revised schedule for Homework and project
• Monday, Feb. 12: Homework #1
• Carrier sense range must be reduced by having "Phy/WirelessPhy set CSThresh 3.5e-10" in your script file
  
• Wednesday, Feb. 28 (date changed): Homework #2
• With DSR, "CMUPriQueue" msut be used instead of "Queue/DropTail/PriQueue" for interface queue
• There is a confusion about the deadline. A correct deadline is Wednesday, Feb. 28.
  
• Monday, Mar. 26: Homework #3 (turn in before or in class)
  
• Monday, Apr. 23: Homework #4
• Wednesday, Mar. 7 (date changed): Project #1
• There is a confusion about the deadline. A correct deadline is Wednesday, March 7.
• Wednesday, Mar. 21: Project #2 (midnight)
  
• Wednesday, Apr. 11: Project #3
• Wednesday, May 2: Project #4
• Quiz #1 ~ #6
  

• Week 16 (Project #4 Due May 2, Wed.)
  
• Week 15 (Homework #4 Due April 23, Mon.)
• TCP in mobile networks
• Reading list for TCP
• Chapter 9, "Mobile Communications, Second Edition," Jochen Schiller, Addison Wesley, Second Edition, 2003.
• R. Caceres and L. Iftode, "Improving The Performance of Reliable Transport Protocols in Mobile Computing Environments," IEEE Journal of Selected Areas in Communications, pp. 850-857, June 1995.
• G. Holland and N. H. Vaidya, "Analysis of TCP Performance over Mobile Ad Hoc Networks," MobiCom'99, August 1999.
• S. Xu, T. Saadawi, “Does the IEEE 802.11 MAC Protocol Work Well in Multihop Wireless Ad Hoc Networks?” IEEE Communications Magazine, pp. 130-137, Jun. 2001.
• Week 14
  
• TCP in fixed networks
• Lab on TCP
• Fixed network (tcp_simple.tcl, fil2tcp.awk, fil3tcp.awk)
• MobileIP network (infra.tcl, fil-tcp.awk)
  
• Week 13 (Project #3 Due April 11, Wed.)
  
• Multicast
• Reading list for Multicast
• G. Xylomenos and G. C. Polyzos, "IP Multicast for Mobile Hosts," IEEE Communications Magazine, pp. 54-58, Jan. 1997.
• M. Gerla, C.-C. Chiang, and L. Zhang, "Tree Multicast Strategies in Mobile, Multihop Wireless Networks," ACM/Baltzer Journal of Mobile Networks and Applications (MONET), Vol. 3, No. 3, pp. 193-207, 1999.
• Week 12
• Lecture note on Mobile IP has been revised (a later part)
• Reading list for Mobile IP
• Chapter 8, "Mobile Communications, Second Edition," Jochen Schiller, Addison Wesley, Second Edition, 2003.
• J. Ioannidis, D. Duchamp, G. Maguire, Jr, "IP-based Protocols for Mobile Internetworking," SIGCOMM '91, pp. 235 - 245.

• Week 11
• Extra lab for Mobile IP
• Note that trace format for wired node is different from wireless (see Trace file format in ns-2)
• Note also that the 9th item in a wired trace has 4-component source address, where the first three components are the hierarchical address of the wired node and the last component is the port number
• infra-2.tcl
• fil-tcp-2.awk
• Week 10
• March 26 class starts at 1pm
  
• Script fiels for lab exercise (multirate control)
• ex_run
• ex_carj.tcl
• ex_delay.awk
• Lab for Mobile IP
• infra.tcl
• fil-tcp.awk
• Week 08
• Mobile IP
• Access C++ from TCL with ns-2
• Some additions (distance and CPThresh values, new scenario)
• Some corrections (Lab exercise, 6, 18, 36 and 54 Mbps)
• Some revisions (Homework #3)
• Parameters (Common)
  Phy/WirelessPhy set Pt_ 3.981e-3
  Phy/WirelessPhy set CSThresh_ 7.943e-13
• Parameters (6Mbps)
      Mac/802_11 set dataRate_        6.0e6
      Phy/WirelessPhy set bandwidth_ 6e6
      Mac/802_11 set PLCPDataRate_  6.0e6      
      Phy/WirelessPhy set CPThresh_ 3.999
      Phy/WirelessPhy set RXThresh_ 6.310e-12
• Parameters (18 Mbps)
      Mac/802_11 set dataRate_        18.0e6
      Phy/WirelessPhy set bandwidth_ 18e6
      Mac/802_11 set PLCPDataRate_  18.0e6      
      Phy/WirelessPhy set CPThresh_ 11.995
      Phy/WirelessPhy set RXThresh_ 1.995e-11
• Parameters (36 Mbps)
      Mac/802_11 set dataRate_        36.0e6
      Phy/WirelessPhy set bandwidth_ 36e6
      Mac/802_11 set PLCPDataRate_  36.0e6      
      Phy/WirelessPhy set CPThresh_ 75.858
      Phy/WirelessPhy set RXThresh_ 1.000e-10
• Parameters (54 Mbps)
      Mac/802_11 set dataRate_        54.0e6
      Phy/WirelessPhy set bandwidth_ 54e6
      Mac/802_11 set PLCPDataRate_  54.0e6      
      Phy/WirelessPhy set CPThresh_ 285.759
      Phy/WirelessPhy set RXThresh_ 3.162e-10
  
• Reading
• J. Schiller, "Mobile network layer," Chapter 8.1~8.2
• A. Myles, D. Johnson, C. Perkins. A Mobile Host Protocol Supporting Route Optimization and  
    Authentication. IEEE Journal on Selected Areas in Communications, special issue on ``Mobile and  
    Wireless Computing  Networks,'' 13(5):839-849, June 1995
• Week 07
• IEEE 802.11 Managament
• Lab exercise
• Goal: How does DSR work with different capture threshold?
•  Setup: 50 nodes move in a 300x1500m^2 network based on random waypoint mobility with the maximum speed of 5m/s and pause time of 50 seconds. Simulation time is 150 seconds. 25 CBR sources are simulated with high packet rate. Use “CPThresh_" of 4, 10 and 20 dB. (The default value is 10. See ~/tcl/lib/ns-default.tcl for all default parameters.)
• Output: Compare throughput  with different capture threshold.
  
• Reading
• D. B. Johnson and D. A. Maltz, "Dynamic Source Routing in Ad Hoc Wireless Networks," Mobile Computing, edited by T. Imielinski and H. F. Korth, Kluwer Academic Publishers, 1996.
• C. E. Perkins and E. Royer, Ad Hoc On-Demand Distance Vector Routing, WMCSA Workshop, New Orleans, February 1999. 
• S. R. Das, C. E. Perkins, E. M. Royer, “Performance Comparison of Two On-Demand Routing Protocols for Ad Hoc Networks,” INFOCOM 2000.
• Week 05~06
• MANET Routing
  
• Send and recv function in ns-2
• Homework #1 resources: ex3sta.tcl, f0.awk, f1.awk, f2.awk, fifty.tcl, fifty.awk
• Reading
• MANET Routing: J. Schiller, "Mobile ad hoc  networks," Chapter 8.3
• Week 04
• IEEE 802.11
• Multihop simulation with ns-2
• Reading
• <>ns-2 manual Chap. 16 and 18
• <>802.11 standard, Section 5.1~4, 7, 9.1~2 and 11.1~3
• Week 03
• Fundamentals of mobile communications
• Mobile networking with ns-2
• Medium access protocols for mobile networks
• Mobility and traffic generation in ns-2
• delay.awk
• Week 02 (Wed, Jan. 24)
  
• Fundamentals of Data Networks
  
• Sample runs with ns-2
• simple.tcl
• ex6sta.tcl (fil.awk, fil2.awk, fil4.awk, fil6.awk)
• ex6sta2.tcl
  
• infra.tcl (fil-tcp.awk)
• Week 02 (No class on Monday, Jan. 22)
• Week 01
• Overview of mobile computing, 
• nam nam-x.xx/edu/C2-sliding-color.nam
• nam nam-x.xx/tcl/test/test-wireless-2.nam

Maintained by Chansu Yu (c.yu91@csuohio.edu)