The Journal of Korean Institute of Communications and Information Sciences (한국통신학회논문지)

The Korean Institute of Commucations and Information Sciences (한국통신학회)
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Search of Beacon in Low Power Wireless Interface

저전력 무선접속에서 비콘 탐색

  • 송명렬 (호서대학교 정보통신공학과)
  • Published : 2007.04.30
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Abstract

In IEEE 802.11b wireless network, stations synchronize themselves to the beacons periodically sent by the access point(AP) when they are running in low power mode. In case of missing beacon due to noise or traffic from neighboring wireless network stations must be awake until they get the next beacon, which causes energy consumption in stations. In this paper, we propose a scheme searching next beacon consuming little energy. The problems of missing beacon in low power mode of IEEE 802.11b wireless interface are described and a new method to reduce energy consumption is proposed. The proposed method is simulated with the network simulator, ns2, and compared with the low power mode of the IEEE 802.11b. The result measured in terms of station's wakeup time shows some enhancement in energy consumption when some errors occur in receiving frames.

IEEE 802.l1b 무선 네트워크에서 스테이션들이 저전력 모드로 동작할 때, 스테이션들은 액세스 포인트 (AP)가 주기적으로 전송하는 비콘(beacon)에 동기를 맞춘다. 잡음이나 이웃한 무선 네트워크의 트래픽으로 인해 비콘 수신에 장애가 발생하는 경우 다음 번 비콘까지 깨어서 에너지를 소모하게 된다. 이 논문에서 에너지를 적게 소모하면서 다음 비콘을 탐지하기 위한 방법을 제안한다. IEEE 802.l1b 무선 인터페이스의 저전력 모드에서 비콘 수신 장애 문제점이 설명되었고 에너지 소모를 줄이기 위한 새로운 탐지 방법이 제안되었다. 네트워크 시뮬레이터인 ns2를 이용하여 제안된 방법에 대해 모의실험이 수행되었고 IEEE 802.l1b의 저전력 모드와 비교했다. 스테이션이 깨어있는 시간으로 측정된 결과는 무선 네트워크에서 프레임의 수신오류가 발생할 때 에너지 소모가 개선되는 것을 보여준다.

Keywords

References

  1. A. Acquaviva, T. Simunic, and V. Deolalikar, 'Server controlled power management for wireless portable devices', Hewlett Packard Laboratories Technical Report, HPL-2003-82, 2003
  2. C. F. Chiasserini and R. R. Rao, 'Combining paging with dynamic power management', IEEE INFOCOM 2001, pp. 996-1004, 2001
  3. [3] K. Fall and K. Varadhan, The ns Manual, http://www.isi.edu/nsnam/ns/ns-documentation.html, March 2, 2005
  4. LAN MAN Standards Committee of the IEEE Computer Society, Wireless LAN medium access control (MAC) and physical layer (PHY) specifications, ANSI/IEEE Std 802.11, 1999 Edition, 1999
  5. R. Jejurikar and R. Gupta,'Energy aware task scheduling with task synchronization for embedded real time systems', Proc. of the International Conference on Compilers, Architectures and Synthesis for Embedded Systems, pp.164-169, Oct. 2002
  6. R. Kravets and P. Krishnan,'Application-driven power management for mobile communication', Wireless Networks, vol. 6, Issue 4, pp.263-277, Jul. 2000 https://doi.org/10.1023/A:1019149900672
  7. Y. H. Lu, L. Benini and G. D. Micheli, 'Power-aware operating systems for interactive systems', IEEE Trans. on Very Large Scale Integration (VLSI) Systems, vol. 10, no. 2, pp.119-134, Apr. 2002 https://doi.org/10.1109/92.994989
  8. S. M. Martin, K. Flautner, T. Mudge, and D. Blaauw, 'Combined dynamic voltage scaling and adaptive body biasing for lower power microprocessors under dynamic workloads', Proc. of International Conference on Computer Aided Design (ICCAD-2002), pp.721-725, Nov. 2002
  9. S. Mohapatra, R. Cornea, N. Dutt, A. Nicolau, and N. Venkatasubramanian, 'Integrated power management for video streaming to mobile handheld devices', Proc. of the 11th ACM International Conference on Multimedia, pp.582-591, Nov. 2003
  10. A. Salkintzis and C. Chamzas, 'An outband paging protocol for energy-efficient mobile communications', IEEE Transactions on Broadcasting, vol. 48, no. 3, pp. 246-256, Sep. 2002 https://doi.org/10.1109/TBC.2002.804067
  11. T. Simunic, L. Benini, G. D. Micheli, 'Energy-efficient design of battery-powered embedded systems', IEEE Trans. on Very Large Scale Integration (VLSI) Systems, vol. 9, no. 1, pp.15-28, Feb. 2001 https://doi.org/10.1109/92.920814
  12. E. S. C. Takahashi, 'Application aware scheduling for power management on IEEE 802.11', Proc. of IEEE International Performance, Computers, and Communications Conference, pp. 247-253, Feb. 2000