IOT/WSN

Overview:

NetSim is a discrete event simulator covering a broad range of wired, wireless, mobile and sensor networks.
It comes with a simple and user friendly GUI which features drag and drop functionality for devices, links, application etc.

The specifications for the IOT module are –

  • Design network, simulate and observe the performance of 6LoWPAN network using NetSim GUI
    • Simulation Area: 1000000 m X 1000000 m
    • No of sensors to be deployed: 500
    • Devices: Sensor Motes, 6LoWPAN Gateway, Routers, Switches, AP, Nodes can be dragged and dropped for network design
    • Data link and physical layer implementation is as per IEEE 802.15.4 standards.
    • Network layer is IPV6 (RFC 2460) and can run both on IPV4 and IPv6.
    • Routing via RPL (RFC 6550), AODV (RFC 3561).
    • 6LoWPAN Gateway will switch the packet from one network from another,
  • Facility to conduct various experiments for differing input / output parameters
    • Input: Beacon Order, Superframe Order, Backoff Exponent, Power Consumption, Battery life Extension, CCA type, Channel Number, Routing Time, Phy SHR Duration, Receiver Sensitivity, ED Threshold, Channel Characteristics
    • Output: Routing Overhead, Delay, Power Consumption, Lifetime of motes, Packet Delivery ratio, Routing Time, Actual Vs Sensed path of agent

  • PHY Layer

    • Protocol – IEEE 802.15.4
    • Frequency Band – 2400MHz
    • Data rate – 250 kbps
    • Chip rate – 2000 Mchips/s
    • Symbols Rate – 62.5 ksymbols/s
    • Modulation Technique – O-QPSK
    • Min LIFS Period – 40 symbols
    • Min SIFS Period – 12 symbols
    • Unit Back off time – 20 symbols
    • Phy SHR Duration – 3,7,10,40 symbols
    • Phy symbol per octet – 0.4, 1.6, 2,8
    • Turnaround time – 12 symbols
    • CCA Mode
      • Carrier_Sense_Only
      • Energy_Detection
      • Carrier_Sense_With_EnergyDetection
    • Receiver Sensitivity and EDThreshold
    • Transmitter Power - 1 to 100 dBm

  • MAC Layer

    • Protocol – IEEE802.15.4
    • AckRequest – True, False
    • Beacon Mode – Enable, Disable
    • Beacon order and Super Frame order – 0 to 15
    • MaxCSMABackoff – 0 to 5
    • MinCAPLength – 440 symbols
    • Maximum Back off Exponent, Min Back off Exponent and Maximum Frame Retries
    • Unit Back off period – 20 symbols
    • GTSDesc persistent time – 4 sec
  • Power
    • Power Source – MainLine , Battery
    • Battery
      • Energy Harvesting – on, off
      • Initial Energy – 0.001 -1000 mAH
      • Transmitting current – 0 to 20 mA, Idle Mode Current – 0 to 20 mA, Receiving Current – 0 to 20 mA, Sleep Mode Current – 0 to 20 mA, Recharging Current – 0 to 1.0 mA
      • Voltage – 0 to 10 V

  • Network Layer

    • IPv6
    • Prefix_Length
    • AODV Routing Protocol
    • RPL Routing Protocol as per RFC 6550 (Specifications Provided Separately)

  • Transport Layer

    • UDP, TCP (Old Tahoe, Tahoe, Reno, New Reno, Bic, Cubic)

  • Application Layer

    • Application Type: Unicast, Broadcast
    • Applications:
      • Sensor_App
      • File Transfer Protocol (FTP)
      • Database Application
      • Email Application
      • HTTP Application
      • COAP
      • Constant Bit Rate(CBR) Application
      • Voice traffic
        • Voice codecs include G.711, G.723, G.729, GSM – FR, GSM EFR
        • CBR service
        • VBR services
        • Silence suppression via deterministic model and DTMC
      • Video Traffic
        • Continuous Normal VBR
        • Continuous State Auto Regressive Markov Model
        • Quantized State Continous Time Markov Model
        • Simple IPB Composite Model
      • Custom Model: Users can develop custom application model based on Packet size and inter-arrival time available in the following probability distributions: Exponential, Constant
      • Peer to Peer application
    • Encryption: AES, DES, XOR, TEA
    • QoS: UGS, RTPS, eRTPS, nRTPS, BE

Protocol source C codes available for user modification

Output Performance Metrics:A variety of network performance is reported including

  • Network_Metrics
  • Queue_Metrics
  • IEEE802.15.4_Metrics
    • Energy_Metrics
  • AODV Metrics
  • IP metrics, TCP / UDP Metrics etc.
  • Plots (Graphical plot of an attribute over time) is available for application throughputs and Link throughputs with docking feature.

Detailed Packet Trace: Users can log details of each packet as it flows in the network.

Detailed Event Trace:Users can log each event of the protocol FSM while execution of the discrete event simulation.

Packet Animation:User can enable multiple options.

  • IP Address for devices.
  • Graphs are plotting simultaneously with packet transmission.
  • IP table for each device.
  • Battery level indicator.
  • Filter option for table that is present in the animation window.

Command Line Interface

  • CLI mode of running for more concise and powerful means of control
  • Facilitates use of automated scripts for running batch simulations
  • Model network configurations using XML based configuration files

Wireshark Interfacing: pcap files can be recorded at each node which can be opened in Wireshark for protocol analysis

MATLAB Interface: NetSim can be interfaced with MATLAB offline or online (run-time)

Additional Information:
Knowledgebase Q&A
File Exchange Link
Webinar Links