An optimal online algorithm for packet scheduling with agreeable deadlines

  • Authors:
  • Fei Li;Jay Sethuraman;Clifford Stein

  • Affiliations:
  • Columbia U.;Columbia U.;Columbia U.

  • Venue:
  • SODA '05 Proceedings of the sixteenth annual ACM-SIAM symposium on Discrete algorithms
  • Year:
  • 2005

Quantified Score

Hi-index 0.00

Visualization

Abstract

An important issue in IP-based QoS networks is the effective management of packets at the router level. Specifically, if the arriving packets cannot all be stored in a buffer, or if the packets have deadlines by which they must be delivered, the router needs to identify the packets that should be dropped. In recent work, Kesselman et al. [6] propose a model, called buffer management with bounded delay, which can be thought of as an online scheduling problem on a single machine: packets arrive at a network switch and are stored in a buffer of size B. Each packet has a positive weight and a deadline, with the weight representing the value of transmitting the packet by its deadline. At each integer time step, exactly one packet can be transmitted, and the objective is to maximize the total weight of the transmitted packets. If B = ∞, this is the online version of the scheduling problem 1| pj = 1, rj, dj |Σ wj Uj. (We assume that rj and dj are integers.)