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Broadcast Enhanced Cooperative Asynchronous Multichannel MAC for Wireless Ad Hoc Network

Broadcast Enhanced Cooperative Asynchronous Multichannel MAC for Wireless Ad Hoc Network. WAN YunHeng , CHEN Xi, LU JianHua Electronics Engineering Department Tsinghua University Beijing , China IEEE Wicom 2011. Outline . Introduction BMAC Simulation Conclusion. Introduction.

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Broadcast Enhanced Cooperative Asynchronous Multichannel MAC for Wireless Ad Hoc Network

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  1. Broadcast Enhanced Cooperative Asynchronous Multichannel MAC for Wireless Ad Hoc Network WAN YunHeng, CHEN Xi, LU JianHua Electronics Engineering Department Tsinghua University Beijing, China IEEE Wicom 2011

  2. Outline • Introduction • BMAC • Simulation • Conclusion

  3. Introduction • Increase wireless network capacity • Multiple channels • Broadcast specific data to a group receivers • Real time video • Sending notice • Advertisement message

  4. Introduction • Multiple channel • Good use of frequency resources • Increase the aggregate throughput

  5. Introduction Tie Luo, MehulMotani, VikramSrinivasan, Cooperative Asynchronous-Multichannel MAC: Design, Analysis, and Implementation, IEEE trans- action on mobile computing, Vol. 8, No. 3, March 2009 • CAM-MAC • A single half-duplex transceiver • Control channel

  6. Introduction • CAM-MAC CFBTO CCAP transmitter’s neighbor PRA CFA PRA PRB CFA CFB transmitter PRA PRB CFA CFB receiver receiver’s neighbor PRB CFB Time CCAP

  7. Introduction • CAM-MAC CFBTO CCAP transmitter’s neighbor PRA CFA NCF PRA PRB CFA NCF transmitter PRA PRB CFA NCF receiver INV receiver’s neighbor PRB INV Time CCAP

  8. Introduction • CAM-MAC CCAP transmitter’s neighbor PRA INV PRA PRB Back off INV transmitter PRA PRB receiver receiver’s neighbor PRB Time CCAP

  9. Introduction • CAM-MAC in broadcast scenario 2 D A 1 1 1 1 C 1 B

  10. Goal • Propose a broadcast enhanced CAM-MAC called BMAC • The benefits of unicast in CAM-MAC are reserved • Efficient broadcast is introduced

  11. System model • A single half-duplex transceiver • A control channel and other data channel • Non-synchronization

  12. BMAC Two hop neighbor Hidden terminal problem BPT Channel switch BPRA receiver transmitter BPRA BPRA receiver Two hop neighbor Hidden terminal problem Time

  13. BMAC Two hop neighbor BPRA BPRA BPT Channel switch RI BPRA RI BPRA receiver transmitter BPRA RI BPRA RI BPRA BPRA RI RI receiver Two hop neighbor BPRA BPRA Time

  14. BMAC • In BPT BPT PRA BINV transmitter PRA BINV receiver Two hop neighbor PRA Time CCAP

  15. Simulation • Simulation setup

  16. Simulation result • Throughput

  17. Simulation result • Packet size

  18. Simulation result • Unicast and broadcast throughput

  19. Conclusion • The authors proposed a broadcast enhanced MAC protocol called BMAC in this paper • Ensure the compatibility of broadcast and unicast traffic • Simulation result shows that the new protocol increases the network performance in broadcast and unicast mixed environment

  20. a T h a n k s f o r y o u r t t e n t i o n

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