한국전자통신학회논문지 (The Journal of the Korea institute of electronic communication sciences)

한국전자통신학회 (Korea Institute of Electronic Communication Science)
권호 표지
DOI QR코드

DOI QR Code

IEEE 802.15.6 기반 CSMA/CA 성능 향상에 관한 연구

A Study on the CSMA/CA Performance Improvement based IEEE 802.15.6

  • 이정재 (송원대학교 컴퓨터정보학과) ;
  • 김인환 (송원대학교 전기전자공학과)
  • 투고 : 2015.10.02
  • 심사 : 2015.11.23
  • 발행 : 2015.11.30
PDF 다운로드
⟨ 이전 논문 다음 논문 ⟩

초록

WBAN을 위한 MAC 프로토콜은 의료용 센서 노드의 가변적인 데이터를 효율적으로 처리하기 위해서 응급상황에서 발생하는 트래픽을 가장 높은 우선순위로 처리하는 CSMA/CA(: Carrier Sense Multiple Access with Collision Avoidance) 알고리즘을 수행하게 된다. 노드가 전송하는 응급 메시지는 충돌이 발생하게 되고 응급 메시지 재전송으로 인한 전송 지연이 발생할 수 있으며 재전송으로 인한 에너지 낭비를 가져올 수 있다. 본 논문에서는 이러한 문제점들을 개선하기 위해서 우선순위 큐잉을 적용한 CSMA/CA 알고리즘의 경우 MAC 명령어 프레임과 데이터 프레임의 우선순위를 정하여 서로 다른 백오프 파라미터를 적용하고 충돌로 인한 프레임 손실을 최소화하는 알고리즘을 제안하였다. 성능평가 결과 제안한 MAC 프로토콜을 사용했을 때가 IEEE 802.15.6을 사용했을때 보다 충돌 확률이 감소하여 패킷 전송 처리율이 증가하고 패킷 손실량이 감소함을 보였다.

MAC protocol for WBAN performs CSMA/CA(:Carrier Sense Multiple Access with Collision Avoidance)algorithm that handles traffic which occurs in emergency with top priority in order to deal with variable data of sensor node for medicine. Emergency message that node sends undergoes collision and delay of transmission by retransmission of emergency message and waste of energy by retransmission. This paper suggests algorithm that minimizes loss of frame caused by collision and applies different backoff parameters by setting order of priority between MAC instruction frame and data frame in CSMA/CA algorithm case which applies order of priority queuing to improve aforementioned problem. According to performance evaluation, it has been found that using suggested MAC protocol showed lower collision probability, higher packet transmission processing ratio and lower packet loss compared with using IEEE 802.15.6.

키워드

참고문헌

  1. S. Ullah, and K. Kwak, "An Ultra Low-Power and Traffic-Adaptive Medium Access Control for Wireless Body Area Networks," J. med. system, vol. 16, no. 2, July 2010, pp. 875-891.
  2. J. Lee and J. Hong, "Performance Improvement of IEEE 802.15.4 MAC for WBAN Environments in Medical," J. of the Korea Institute of Electronic Communication Sciences, vol. 10, no. 1, Jan. 2015, pp. 223-230.
  3. C. Joao, J. Rodrigues, and P. Lorenz, "Toward ubiquitous mobility solutions for body sensor networks on healthcare," Communications Mag., IEEE vol. 50, no. 5, May 2012, pp. 108-115.
  4. S. Ullah, M. Chen, and K. Kwak, "Throughtput and Delay Analysis of IEEE 802.15.6-Based CSMA/CA Protocol," J. of medical systems, vol. 36, no. 6, July 2012, pp. 3875-3891. https://doi.org/10.1007/s10916-012-9860-0
  5. S. Cheng and C. Hwang, "Coloring-Based inter-WBAN Scheduling for Mobile Wireless Body area network," IEEE Trans. Parallel and Distributed Systems. vol. 24, no. 2, Feb. 2011, pp 250-259. https://doi.org/10.1109/TPDS.2012.133
  6. K. Choi, "Vehicle Collision Avoidance Sensor with Interference Immunity to Own Transmitted Sign," J. of the Korea Institute of Electronic Communication Sciences, vol. 7, no. 2, 2013, pp. 433-438. https://doi.org/10.13067/JKIECS.2012.7.2.433
  7. X. Wang and L. Cai, "Inference analysis co-existing wireless body area networks," Global Telecommunications Conf., 2011 IEEE, Barcelona, Spain, vol. 22, Dec. 2011, pp. 1-5.
  8. G. Fang, "Distributed Inter-Network Inference Coordination for Wireless Body Area Networks," Global Telecommunications Conf., 2010 IEEE, Portugal, Dec. 2010, pp. 1-9.
  9. L. Alonso and R. Agusti "MAC-PHY Enhancement for 802.11b WLAN Systems," In Proc. the 58th IEEE Semiannual Vehicular Technology Conf. VTC 2003-Fall, Orlando, USA, Oct. 2003, pp. 12-14.
  10. B. Otal, L. Alonso, and C. Verikoukis, "Highly Reliable Energy-Saving MAC for Wireless Body Sensor Networks in Healthcare Systems," IEEE J. Sel. Area. Commun. 2009, vol. 27, no. 2, pp. 553-565. https://doi.org/10.1109/JSAC.2009.090516
  11. T. Kim, Y. Rhee, and S. Kim, "Implementation of a Microwave Doppler Sensor," J. of the Korea Institute of Electronic Communication Sciences, vol. 4, no. 2, 2009, pp. 75-81.
  12. H. Fattah and C. Leung "An Overview of Scheduling Algorithm in Wireless Multimedia Networks," IEEE Trans. Communications, USA, Oct. 2002, pp. 426-432.
  13. F. Xia, J. Li, R. Hao, X. Kong, and R. Gao "Service Differentiated and Adaptive CSMA/CA over IEEE 802.15.4 for Cyber-Physical Systems," The Scientific World J. New Jersey, USA, 2013, pp. 1-7.