Earticle

초록

영어

ETX (Expected Transmission Count) is a well-known link quality metric which has been widely used to find reliable paths between sources and destinations in wireless networks. However, the performance of ETX worsens as the traffic load increases. In this work, we investigate the causes of the instability of ETX under high traffic load and show that the high increase of route request packets significantly affects ETX link metric values. To address this problem, this paper proposes a new link quality estimation metric called HETX (High Load – Expected Transmission Count). Simulations are conducted to compare the performance of three metrics – HETX, ETX and minimum hop-count. The simulation results show that HETX outperforms ETX and minimum hop-count under high load while it performs as well as ETX under light load.

목차

Abstract
 1. Introduction
 2. Related Work
 3. Expected Transmission Count (ETX)
  3.1. ETX Characteristic Under High Load
  3.2. Route Instability Under High Load and Impact Of Route Request Packets
  3.3. A variation of ETX under High Load
 4. LQDV (Link Quality Distance Vector)
  4.1. LQDV Route Discovery
 5. Performance Evaluation
  5.1. Route Request Packet Traffic
  5.2. Comparison of Route Throughput, Delivery Ratio
  5.3. Comparison of end-to-end Delay and Delay Jitter
  5.4. Route Atability
 6. Conclusions
 Acknowledgements
 References

키워드

저자

• Dinh Duong Mai [ School of Electrical Engineering, University of Ulsan ]
• Anh Tai Tran [ School of Electrical Engineering, University of Ulsan ]
• Myung Kyun Kim [ School of Electrical Engineering, University of Ulsan ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Software Engineering and Its Applications

• 간기

  월간

• pISSN

  1738-9984

• 수록기간

  2008~2016

• 등재여부

  SCOPUS

• 십진분류

  KDC 505 DDC 605