DOI QR코드

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Fading 채널의 MANET에서의 라우팅 프로토콜 성능 분석

Evaluation on Routing Protocols over MANETs with Fading Channel

  • ;
  • 김병서 (홍익대학교 컴퓨터정보통신공학과)
  • 투고 : 2011.09.09
  • 심사 : 2011.10.14
  • 발행 : 2011.10.31

초록

이동성을 가진 무선 분산망은 다양한 응용환경의 발달로 많은 관심을 가지고 연구되어지고 있으며 이러한 환경에서의 트래픽은 이전의 단순한 데이터에서 벗어서나 음성과 비디오와 같은 멀티미디어 트래픽을 포함하게 되었다. 그러나 유선망과는 달리 무선망은 다양한 원인에 의하여 전송 경로가 끊어지는 일들이 자주 일어나게 되며, 이는 더욱 멀티미디어 트래픽의 전송을 어렵게 하고 있다. 다양한 무선 채널 환경에서의 멀티미디어 트래픽 전송에 대한 연구 결과 들이 있어왔으나 무선 페이딩 환경과 이동성을 포함한 채널 환경과 다양한 라우팅 프로토콜을 이용한 멀티미디어 트래픽의 성능 평가에 대한 연구는 진행된바 없기에 본 논문에서는 그러한 환경에서 멀티미디어 트래픽의 전송 성능에 심도 깊은 모의실험을 통하여 분석하고 멀티미디어 서비스의 우선순위에 따른 나은 라우팅 프로토콜을 권장한다.

Mobile Ad-Hoc networks (MANET) has been getting the spotlight in the area of the wireless networks because of its flexibility and salability, and developing of many applications with it. As a consequence, MANETs are required to process not only simple data traffics, but also multimedia traffics, which has some constraints on the performances. However, unlike wired-networks, the wireless networks have frequent route-disconnections due to some reasons such as channel errors and mobility. Such frequent link disconnections makes the delivery of multimedia traffics difficult. Even though there many researches on multimedia transmissions on various environments, the performances of multimedia transmissions over fading channel and mobility even using various routing protocols have not been evaluated. Therefore, this paper extensively simulates the MPEG-4 video transmission over fading channel environment with node's mobility. In addition, the performances with two routing protocols such as AODV and DSR are compared. Finally, the simulation results shows that DSR protocol has the better performances to deliver MPEG-4 traffic.

키워드

참고문헌

  1. Beaubrun, R. and Molo, B., Using DSR for routing multimedia traffic in MANET. International Journal for Computer Network & Communication, 2(2010), 120-138. https://doi.org/10.5121/ijcnc.2010.2508
  2. Sheltami, T. R., Performance evaluation of H.264 protocols. Ad Hoc Network Journal of Mobile Multimedia, 4(2008), 59-70.
  3. Al-Suhail, G. A., Performance evaluation of MPEG-4 video transport in Rayleigh fading channel. 2nd International Conference on Signal Processing and Communication System (ICSPCS), (2008, pp 1-8.
  4. Sarkar, N. I. and Lol, W. G., A Study of MANET Routing Protocols: Joint Node Density, Packet Length and Mobility. IEEE Conference on Computers and Communications (ISCC), 2010, pp 515-520.
  5. The network simulator-ns-2, http://www.isi.edu/ nsnam/ns.
  6. Atenaa & radio comunication (ARC) group, http://www.ece.cmu.edu/wireless/.
  7. MPEG-4 and H.263 video traces for network performance evaluation, 2001, http://www.tkn.tu-berlin.de/research/trace/trace.html.
  8. IEEE 802.11 WG, Part 11: Wireless LAN Medium Access Control (MAC) and Physical Layer (PHY) specifications, Standard, IEEE, 1999.
  9. Johnson, D. B. and Maltz, D. A., Dynamic source routing in Ad-Hoc networks. Mobile Computing, ed. T. Imielinski and H. Korth, Kluwer Academic Publishers, 1996, pp 153-181.
  10. Perkins, C. E. and Royer, E. M., Ad Hoc on-demand distance vector routing. Proceedings of the 2nd IEEE Workshop on Mobile Computing Systems and Applications, New Orleans, LA, 1999, pp 90-100.
  11. ITU, One way transmission time. ITU-T Recommendation G.114. May 2000.
  12. Amjad, K. and Stocer, A.J., Impact of node density and mobility on the performance of AODV and DSR in MANETS. IEEE Conference on Communication Systems Networks and Digital Signal Processing (CSNDSP), 2010, pp 61-65.