Tactical MANET Radios

Objective

To model, simulate and analyze the performance of a Tactical MANET radio network

Network Model - Defense Scenario

  • 50 soldiers engaging the enemy, are divided into five groups with 10 in each group.
  • Soldiers in each group are continuously moving.
  • Soldiers belonging to a group move in groups (Group Mobility).
  • Communication happens within the group, as well as across the group.(Inter and Intra communication).
Tactical MANET Radios

  • Technology: MANET over TDMA
  • Simulation Environment Size: 5 Km * 5 Km
  • No of wireless nodes – 50nos split into 5 groups of 10 each.
  • Transport Layer - UDP
  • Network layer – DSR, AODV, ZRP, OLSR protocol options
  • Data Link Layer
    • Protocol : DTDMA
    • Network Type : Ad-hoc
  • Physical Layer
    • Protocol: DTDMA
    • Band : UHF
    • Frequency Range : 476 MHz to 478 MHz
    • Channel Bandwidth (MHz) : 2
    • Frequency Hopping : ON
    • Modulation : QPSK, 16-QAM, 64-QAM
    • Transmitter power : 4W
    • Receiver sensitivity : -119 dBm
    • Antenna gain : 1

  • RF Model
    • Channel Characteristics : PathLoss, Fading and Shadowing
    • Path Loss Model : LOG_DISTANCE
    • Path Loss Exponent (n) : 2
    • Fading Model : Rayleigh
    • Fading Figure (m) : 1
    • Shadowing Model : Log Normal
    • Standard Deviation (dB) : 5
  • Applications - 13 Voice Applications
  • Traffic rate:
    • 9.6 Kbps
    • 2 voice applications are generated in between the same group members. It is named as INTRA_COMMUNICATION.
    • 1 voice application is modelled in between the members in different groups. It is named as INTER_COMMUNICATION.
  • Crypto: AES
  • Simulation Time: 100 sec

Performance Analysis:

We analyze the performance of Network layer protocols AODV and OLSR in terms of the latency experienced by the voice packets. We also analyze how multi-hop communication happens in this case.

Analysis - DTDMA running QPSK(AODV vs OLSR)

Group Id Application Id Generation Rate
(kbps)
Throughput Delay OLSR
(millisecond)
Delay AODV
(millisecond)
Section I INTRA_COMMUNICATION_I 9.6 9.35 559.64 98.15
  INTRA_COMMUNICATION_I 9.6 9.35 550.48 94.96
Section II INTRA_COMMUNICATION_II 9.6 9.35 574.98 100.58
  INTRA_COMMUNICATION_II 9.6 9.35 595.96 103.39
Section III INTRA_COMMUNICATION_III 9.6 9.35 626.91 93.22
Section IV INTRA_COMMUNICATION_IV 9.6 9.35 672.96 98.74
  INTRA_COMMUNICATION_IV 9.6 9.35 655.36 103.48
Section V INTRA_COMMUNICATION_V 9.6 9.35 695.22 94.77
  INTRA_COMMUNICATION_V 9.6 9.34 760.76 208.16
Between Section I & Section III INTRA_COMMUNICATION_I-III 9.6 9.35 552.20 94.15
Between Section II & Section III INTRA_COMMUNICATION_II-III 9.6 9.35 588.62 101.32
Between Section III & Section IV INTRA_COMMUNICATION_III-IV 9.6 9.35 619.33 101.21
Between Section III & Section V INTRA_COMMUNICATION_III-V 9.6 9.35 766.08 222.21