3TP: 3-D models transport protocol

  • Authors:
  • Ghassan Al-Regib;Yucel Altunbasak

  • Affiliations:
  • Georgia Institute of Technology, Savannah, GA;Georgia Institute of Technology, Atlanta, GA

  • Venue:
  • Proceedings of the ninth international conference on 3D Web technology
  • Year:
  • 2004

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Abstract

This paper addresses the problem of streaming progressively compressed 3-D models over lossy networks. Out of all encoded packets that can be transmitted, we intelligently choose a subset of packets to be transmitted using TCP in order to meet a given distortion constraint, while transmitting the remaining packets using UDP to minimize the end-to-end delay. We call this new application-layer protocol 3TP (3-D models transport protocol). In this paper, we mathematically model both the delay and the distortion for a given channel characteristics. Then, we minimize the expected delay for a given distortion upper bound. The proposed protocol results in savings of 39% and 62% in delay time at packet-loss rates of 1% and 14%, respectively, compared to systems that do not optimize transmission according to the encoded bitstream content.