Earticle

초록

영어

In the newly released 802.11aa-2012 protocol, intra access category prioritization (IACP) and drop eligibility indicator (DEI) enable stream classification service (SCS) with graceful degradation for robust audio and video streaming. IACP introduces the need for scheduling between the primary and alternative AC queues (AC_VI and AAC_VI) for differentiating real-time and non-real-time video streams. This paper proposes a novel cross-layer design for the scheduler between AC_VI and AAC_VI, which combines a real-time video importance scheme in the Application layer and a priority weighting and dropping algorithm (PWD) in the MAC layer, where priority weighting is applied only to AC_VI and priority dropping to both AC_VI and AAC_VI. The results show that the proposed design outperforms the conventional ones, including IACP-RR, ICAP-WRR, and SCS-WRR, with substantial performance gains for both real-time and non-real-time video streams via AC_VI and AAC_VI. Such a win-win game, not possibly achieved by the conventional designs, shows the true power of PWD.

목차

Abstract
 1. Introduction
 2. Prioritized Weighting and Dropping (PWD)
 3. Experimental Results
  3.1. Simulation Setup
  3.2. Non-real-time Performance Evaluation for AAC_VI
  3.3. Real-time performance evaluation for AC_VI
  3.4. Sensitivity of real-time Cuts
  3.5. Effect of packet delay distribution
 4. Conclusions
 Acknowpledgements
 References

키워드

저자

• Wen-Ping Lai [ Department of Communications Engineering, Yuan Ze University ]
• En-Cheng Liou [ Department of Communications Engineering, Yuan Ze University ]

참고문헌

발행기관

간행물

표지보기 관심저널 등록

• 간행물명

  International Journal of Future Generation Communication and Networking

• 간기

  격월간

• pISSN

  2233-7857

• 수록기간

  2008~2016

• 십진분류

  KDC 505 DDC 605