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GloMoSim Exercise: Multiple Interacting Links in a Wireless Network

GloMoSim Exercise: Multiple Interacting Links in a Wireless Network. Amit K. Vyas (amitvyas@cs.stanford.edu) Fouad A. Tobagi (tobagi@stanford.edu) Stanford University. STA 1. STA 0. d. data. data. AP 0. AP 1. s. Lab 1a: Two Symmetric Links. Gamma = 4.1

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GloMoSim Exercise: Multiple Interacting Links in a Wireless Network

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  1. GloMoSim Exercise:Multiple Interacting Linksin a Wireless Network Amit K. Vyas (amitvyas@cs.stanford.edu) Fouad A. Tobagi (tobagi@stanford.edu) Stanford University Wireless Mesh networks (AIIT)

  2. STA1 STA0 d data data AP0 AP1 s Lab 1a: Two Symmetric Links • Gamma = 4.1 • Saturated CBR Application Traffic • Link Length, d = 10 m • Link Separation, s = 10~50 m • Data Rate = 24 Mbps • Packet Size = 1472B at App (1500B with IP Header) Wireless Mesh networks (AIIT)

  3. Lab 1a Simulations • Setup Directory • Extract file ‘lab1_glomosim_exercises.zip’ to C:\ • Open command prompt, by clicking ‘Start’, ‘Run’, type ‘cmd’, press enter • cd C:\glomosim_exercises_lab1_20080731 • Run Simulations • cd lab1a_Two_Symmetric_Links • run_simulations.bat • For separations = [10, 15, …, 45, 50] m, look at results in files app_cbr_stats_*.txt Wireless Mesh networks (AIIT)

  4. Lab 1a Results • Plot Results • Start Matlab – Click ‘Start’, ‘Programs’, and click on Matlab • cd C:\glomosim_exercises_lab1_20080731 • lab1a_two_symmetric_links Wireless Mesh networks (AIIT)

  5. Two Symmetric Link Results • Throughput of both links is the same Wireless Mesh networks (AIIT)

  6. STA1 STA2 STA0 d data data data AP0 AP1 AP2 s s Lab 1b: Three Symmetric Links • Gamma = 4.1 • Saturated CBR Application Traffic • Link Length, d = 10 m • Link Separation, s = 10~50 m • Data Rate = 24 Mbps • Packet Size = 1472B at App (1500B with IP Header) Wireless Mesh networks (AIIT)

  7. Lab 1b Simulations • Run Simulations • Go to command prompt • cd ..\lab1b_Three_Symmetric_Links • run_simulations.bat • For separations = [10, 15, …, 45, 50] m, look at results in files app_cbr_stats_*.txt • Plot Results • Go to Matlab window • lab1b_three_symmetric_links • To print labels properly, first click the mouse near the red line, and then near the blue line Wireless Mesh networks (AIIT)

  8. Three Symmetric Link Results • Throughput of the center link is different from the side links – capture effect Wireless Mesh networks (AIIT)

  9. STA0 STA1 d data data AP0 AP1 45° s Lab 1c: Two Asymmetric Links • Gamma = 4.1 • Saturated CBR Application Traffic • Link Length, d = 10 m • Link Separation, s = 10~50 m • Data Rate = 24 Mbps • Packet Size = 1472B at App (1500B with IP Header) Wireless Mesh networks (AIIT)

  10. Lab 1c Simulations • Run Simulations • Go to command prompt • cd ..\lab1c_Two_Asymmetric_Links • run_simulations.bat • For separations = [10, 15, …, 45, 50] m, look at results in files app_cbr_stats_*.txt • Plot Results • Go to Matlab window • lab1c_two_asymmetric_links • To print labels properly, first click the mouse near the red line, and then near the blue line Wireless Mesh networks (AIIT)

  11. Two Asymmetric Link Results • Due to asymmetry, throughput of each link is different • Throughput sensitive to separation between the links Wireless Mesh networks (AIIT)

  12. Thank You !! Wireless Mesh networks (AIIT)

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