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Energy Efficient MAC Protocol with Power and Rate Control in Multi-rate ad hoc networks

Energy Efficient MAC Protocol with Power and Rate Control in Multi-rate ad hoc networks. Masaki Bandai, Satoshi Maeda, and Takashi Watanabe Dept. of Computer Science, Shizuoka ( 靜 岡 ) University. IEEE Vehicular Technology Conference, 2008. Outline. Introduction Assumption Protocol

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Energy Efficient MAC Protocol with Power and Rate Control in Multi-rate ad hoc networks

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  1. Energy Efficient MAC Protocol with Power and Rate Control in Multi-rate ad hoc networks Masaki Bandai, Satoshi Maeda, and Takashi Watanabe Dept. of Computer Science, Shizuoka (靜岡) University IEEE Vehicular Technology Conference, 2008

  2. Outline • Introduction • Assumption • Protocol • Simulation • Conclusion

  3. Introduction • Motivation • Extending the life of battery is the more important issue in the ad hoc network. • Direct?? • Relay??

  4. Introduction Direct DATA D S ACK A

  5. Introduction Relay ACK D S DATA DATA A

  6. Assumption • Each node prepares a table that includes energy efficiency of all combinations of transmission power and rate.

  7. Protocol Cisco Aironet 350

  8. Protocol P0 is the maximum transmission power . R0 is the base transmission rate.

  9. Protocol E(Pi,Rj) is the energy consumption when transmission power Pi and rate Rj are adopted.

  10. Protocol π(Pi,Rj) dBm is required power to receive a data.

  11. Protocol • When a node receives a control frame such as RTS, the node measures the received power. • Result = PdBm

  12. Protocol

  13. Protocol B RTS D S A

  14. Protocol B D S A Node D check the Sequence selection threshold ThdBm.

  15. Protocol PBackoff : 10 B RTR D S A PBackoff : 3

  16. Protocol PBackoff : 7 B D S CTR A PBackoff : 0

  17. Protocol B ACK D S DATA DATA A

  18. Protocol

  19. Protocol • NAV problem • when a node receives a RTS or a RTR, it sets Dnav.

  20. Protocol

  21. Protocol • We assume that number of priority levels is L (level 1 to L), maximum backoff time is Tmaxslottime.

  22. Protocol Result : 0.14 L=3

  23. Protocol 30

  24. Simulation Simulator in C# language

  25. Simulation

  26. Simulation

  27. Simulation

  28. Simulation

  29. Simulation

  30. Simulation

  31. Conclusion • In this paper, a novel MAC protocol with transmission power and rate control has been proposed to realize high energy efficient data transmission.

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