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Adaptive Layer Switching for PLC Network with Repeaters

Explore Adaptive Layer Switching in Power Line Communication Networks with Repeaters, comparing CSMA and TDMA, simulated topologies, and performance results.

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Adaptive Layer Switching for PLC Network with Repeaters

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  1. FacultyE&I,Communications Lab, Deutsche Telekom Chairof Communication Networks Adaptive Layer Switching for PLC Network with Repeaters Stanislav Mudriievskyi WSPLC 2016, Paris, 11.10.2016

  2. Agenda • Motivation • Switching from CSMA to TDMA • Switching from TDMA to CSMA • Simulated topologies • Simulation results • Conclusions Adaptive Layer Switching for PLC Network with Repeaters

  3. Average Access Delay, 36 Nodes Adaptive Layer Switching for PLC Network with Repeaters

  4. AggregatedThroughput, 36 Nodes Adaptive Layer Switching for PLC Network with Repeaters

  5. Topology without Repeaters Adaptive Layer Switching for PLC Network with Repeaters

  6. Switching from CSMA to TDMA Adaptive Layer Switching for PLC Network with Repeaters

  7. Switching from TDMA to CSMA Adaptive Layer Switching for PLC Network with Repeaters

  8. Simulation conditions • Ns-3 simulator with channel module from [1] • CSMA with contention window adaptation • TDMA with static slot sizes: equal for slaves, proportionally bigger for repeaters • Static IP routing • Poisson traffic generation • Uplink scenario: all slaves -> master • “All layers” simulation of G.hn [1] F. Aalamifar, A. Schloegl, D. Harris, L. Lampe,“Modelling Power Line Communication Using Network Simulator-3”, IEEE Global Communications Conference (GLOBECOM), Atlanta, GA, USA, December 2013. [Online] Available: http://www.ece.ubc.ca/~faribaa/ns3_plc_software.htm Adaptive Layer Switching for PLC Network with Repeaters

  9. ALS with 3 Repeaters Adaptive Layer Switching for PLC Network with Repeaters

  10. Topology with 3 Repeaters Adaptive Layer Switching for PLC Network with Repeaters

  11. Simulation parameters Adaptive Layer Switching for PLC Network with Repeaters

  12. Average Access Delay, 141 Nodes Adaptive Layer Switching for PLC Network with Repeaters

  13. Average Aggregated Throughput, 141 Nodes Adaptive Layer Switching for PLC Network with Repeaters

  14. Selected nodes: 36, 71, 106, 141 Adaptive Layer Switching for PLC Network with Repeaters

  15. CSMA Delay, Nodes: 36, 71, 106, 141 Adaptive Layer Switching for PLC Network with Repeaters

  16. TDMA Delay, Nodes: 36, 71, 106, 141 Adaptive Layer Switching for PLC Network with Repeaters

  17. CSMA Delay, 141 Nodes Adaptive Layer Switching for PLC Network with Repeaters

  18. TDMA Delay, 141 Nodes Adaptive Layer Switching for PLC Network with Repeaters

  19. Conclusions • Different behaviour of CSMA and TDMA for varying offered traffic • Adaptive layer switching to reach performance boundaries • Lower delay in CSMA for big networks with repeaters • Fair delay for “islands” in TDMA • Higher throughput in TDMA for higher offered traffic • Importance of network conditions (topology, number of nodes, offered traffic, traffic direction, layer 4 protocol, setup of ARP, setup of MAC, PHY, etc.) for performant switching Adaptive Layer Switching for PLC Network with Repeaters

  20. Thank you for attention! Adaptive Layer Switching for PLC Network with Repeaters

  21. Topology with Repeater Adaptive Layer Switching for PLC Network with Repeaters

  22. Switching from CSMA/CA to TDMA with Repeaters • for Slave: stop CSMA/CA transmissions after received switch command until next MAC cycle • for Repeater: retransmit switch command in CSMA/CA until ACK received or until next MAC cycle -> stop CSMA Nodes may transmit Switch to TDMA CSMA/CA TDMA 40 ms 40 ms R1 Ri RN Scheduling information Adaptive Layer Switching for PLC Network with Repeaters

  23. Switching from TDMA to CSMA/CA with Repeaters • order of the TDMA slots Switch to CSMA/CA Nodes may transmit TDMA CSMA/CA 40 ms 40 ms RN R1 Ri Scheduling information Adaptive Layer Switching for PLC Network with Repeaters

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