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Energy-efficient Wireless 802.11 MAC Protocol

Serhat Kucukomeroglu & Weng Liong Low. Energy-efficient Wireless 802.11 MAC Protocol. CS 603 - Wireless Communications & Networks Summer II 2003 Dr. Ajay Gupta. The IEEE 802.11 MAC protocol based on CSMA/CA 1)Physical carrier sense (sender) 2)virtual carrier sense (receiver)

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Energy-efficient Wireless 802.11 MAC Protocol

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  1. Serhat Kucukomeroglu & Weng Liong Low Energy-efficient Wireless 802.11 MAC Protocol CS 603 - Wireless Communications & Networks Summer II 2003 Dr. Ajay Gupta

  2. The IEEE 802.11 MAC protocol based on CSMA/CA 1)Physical carrier sense (sender) 2)virtual carrier sense (receiver) - Request to Sent (RTS) - Clear to Sent (CTS) • The 802.11 MAC protocol uses two ways to coordinate channel access. - Distributed Coordination Function (DCF) - Point Coordination Function (PCF).

  3. Power saving mechanism in the Distributed Coordination Function • A wireless interface can in - off state - doze state - awake state (transmit, receive, idle)

  4. Distributed Coordination Function

  5. Dynamic Power Saving Mechanism (DPSM)

  6. Dynamic Power Saving Mechanism (DPSM)

  7. Future works • Adding error corrections codes. • Using “master nodes” in DCF mode.

  8. References • [1] Jung & Vaidya, An Energy Efficient MAC Protocol for Wireless LANs (2001). http://citeseer.nj.nec.com/541068.html • [2] Jung & Vaidya, A Power Saving MAC Protocol for Wireless Networks (2002). http://citeseer.nj.nec.com/551865.html • [3] Zheng & Kravets, On-demand Power Management for Ad Hoc Networks (2002). http://citeseer.nj.nec.com/zheng02demand.html • [4] Singh & Raghavendra, PAMAS Power Aware Multi-Access protocol with Signaling for Ad Hoc Networks (1999). http://citeseer.nj.nec.com/singh99pamas.html • [5] Sharma, Analysis of 802.11b MAC: A QoS, Fairness, and Performance Perspective (2003). http://citeseer.nj.nec.com/sharma03analysis.html • [6] Holland et al, A Rate-Adaptive MAC Protocol for Multi-Hop Wireless Networks (2001). http://citeseer.nj.nec.com/446806.html • [7] Stine & de Veciana, Tactical Communications Using the IEEE 802.11 MAC Protocol (1998). http://www.argreenhouse.com/society/TacCom/papers98/17_04i.pdf • [8] Tseng et al., Power-Saving Protocols for IEEE 802.11-Based Multi-Hop Ad Hoc Networks (2002). http://citeseer.nj.nec.com/509561.html • [9] Qiao et al., Energy-Efficient PCF Operation of IEEE 802.11a Wireless LAN (2002). http://citeseer.nj.nec.com/qiao02energyefficient.html

  9. Questions

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