Loading...

Model predictive control versus traditional proportional delay differentiation algorithms

Mahramian, M ; Sharif University of Technology

1056 Viewed
  1. Type of Document: Article
  2. DOI: 10.1109/CJECE.2009.5291201
  3. Abstract:
  4. An approximated quadratic programming optimization is proposed to determine a model predictive controller to guarantee end-to-end delay in the DiffServ architecture. The proposed algorithm, called the suboptimal model predictive control scheduler (SMPCS), regulates the service rates of aggregated traffic classes dynamically, such that some constraints on proportional or absolute delay can be guaranteed. This paper investigates SMPCS complexity and its implementation problems in high-speed routers. The main problem of model predictive control (and one which has limited its use to slow processes) is its complexity. Optimization is the most computationally complex part in a model predictive controller. To enable efficient implementation of such a computationally expensive algorithm, this paper proposes to reduce the precision of the optimizer while maintaining near-optimal values for the manipulated variables (service rates). Both control-theoretic analysis and simulations demonstrate that SMPCS performs stable and acceptable quality-of-service differentiations at core routers while maintaining end-to-end delay constraints. © 2005 IEEE
  5. Keywords:
  6. Model predictive control ; Complex parts ; Core routers ; Delay differentiation ; Diffserv architecture ; Efficient implementation ; End to end delay ; End-to-end delay constraints ; High-speed routers ; Manipulated variables ; Model predictive controllers ; Optimal values ; Optimizers ; Proportional delay ; Service rates ; Theoretic analysis ; Traffic class ; Algorithms ; Controllers ; Optimization ; Predictive control systems ; Quadratic programming ; Quality control ; Quality of service ; Simulators ; Telecommunication services ; Web services
  7. Source: Canadian Journal of Electrical and Computer Engineering ; Volume 34, Issue 1 , 2009 , Pages 3-9 ; 08408688 (ISSN)
  8. URL: http://ieeexplore.ieee.org/document/5291201/?arnumber=5291201