End-to-end jitter minimization with TCM for real-time multimedia traffic in DiffServ networks

  • Authors:

  • Tsang-Ling Sheu;Bing-Chi Kuo

  • Affiliations:

  • Dept. of Electr. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan;Dept. of Electr. Eng., Nat. Sun Yat-Sen Univ., Kaohsiung, Taiwan

  • Venue:
  • ISCC '04 Proceedings of the Ninth International Symposium on Computers and Communications 2004 Volume 2 (ISCC"04) - Volume 02
  • Year:
  • 2004

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Abstract

The quality of multimedia services over Internet could be seriously degraded due to unexpectedly increased end-to-end jitter. We propose an innovative end-to-end jitter minimization mechanism with three-color marking (TCM). An early-arrival packet is assigned for a delayed-FIFO queue to consume extra credits. For a late-arrival packet, the highest-priority queue of weighted-round-robin (WRR) scheduling is allocated for exerting on reducing delay deficit to avoid exceeding end-to-end delay constraints. We conduct experiments by simulation and the results reveal that the proposed scheme can achieve very satisfactory end-to-end delay jitter, especially for longer-length packets under heavy traffic load. The impact of using different buffer sizes at a router to the packet loss rate and the end-to-end delay jitter is also investigated.