1 / 15

Design and Simulation of an Efficient Real-Time Traffic Scheduler with Jitter and Delay Guarantees

Design and Simulation of an Efficient Real-Time Traffic Scheduler with Jitter and Delay Guarantees. Fu-Ming Tsou, Hong-Bin Chiou, and Zsehong Tsai, Member, IEEE IEEE TRANSACTIONS ON MULTIMEDIA, VOL. 2, NO. 4, DECEMBER 2000. Outline. Introduction Multilayer Gated Frame Queueing (MGFQ)

gail
Télécharger la présentation

Design and Simulation of an Efficient Real-Time Traffic Scheduler with Jitter and Delay Guarantees

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Design and Simulation of an Efficient Real-Time Traffic Scheduler with Jitter and Delay Guarantees Fu-Ming Tsou, Hong-Bin Chiou, and Zsehong Tsai, Member, IEEE IEEE TRANSACTIONS ON MULTIMEDIA, VOL. 2, NO. 4, DECEMBER 2000 Chin-Kai Wu, CS, NTHU

  2. Outline • Introduction • Multilayer Gated Frame Queueing (MGFQ) • Due-date Calculation Procedure • Due-date Calculation • Jitter Bound • Design Issue • Simulation Chin-Kai Wu, CS, NTHU

  3. Introduction • Scheduling Algorithms • WFQ, WRR • Simply deal with the reduction of implementation complexity • JEDD • Supporting both flexible delay and jitter guarantees, but with high implementation complexity • DFQ • Low implementation, but leads to the limitation on the scalability and granularity of jitter level • Multilayer Gated Frame Queueing (MGFQ) proposed Chin-Kai Wu, CS, NTHU

  4. FP informs DDCs to open the “gate” with period T FIFO with same QoS parameter Temporary-queue i buffers the cells with due-dates were in the interval [iT + 1, (i + 1)T] in the last refreshing-period PPD, APPD scheme to discard packets Operation of MGFQ Jitter bound of all VPs in Group i are within [(i - 1)T + 1, iT] Chin-Kai Wu, CS, NTHU

  5. Operation of MGFQ (Cont’d) Chin-Kai Wu, CS, NTHU

  6. Operation of MGFQ (Cont’d) Chin-Kai Wu, CS, NTHU

  7. Due-date Calculation Procedure Chin-Kai Wu, CS, NTHU

  8. Due-date Calculation Chin-Kai Wu, CS, NTHU

  9. Jitter Bound Chin-Kai Wu, CS, NTHU

  10. Design Issue • Suppose the local jitter bound assigned to VPi at the egress node H is JH. Then, the end-to-end transmission delay (CTD) of VPi is • Therefore, the end-to-end jitter bound [or called Cell Delay Variation (CDV)] is Chin-Kai Wu, CS, NTHU

  11. Simulation Model Chin-Kai Wu, CS, NTHU

  12. Cell Delay Distribution Chin-Kai Wu, CS, NTHU

  13. Cell Delay Metrics Chin-Kai Wu, CS, NTHU

  14. Cell Overdue Ratio Chin-Kai Wu, CS, NTHU

  15. Impact of Congestion Chin-Kai Wu, CS, NTHU

More Related