A State Dependent RED: An Enhanced Active Queue Management Scheme for Real-Time Internet Services

Intae RYOO  Meehyea YANG  

Publication
IEICE TRANSACTIONS on Communications   Vol.E89-B   No.2   pp.614-617
Publication Date: 2006/02/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e89-b.2.614
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Internet
Keyword: 
queue management,  state dependent RED,  jitter,  

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Summary: 
This paper introduces a State Dependent Random Early Detection (SDRED) scheme that can improve delay and jitter performances by adjusting RED parameters such as maxth and wq according to queue status. The SDRED is designed to adapt to traffic conditions by adjusting the maximum threshold and queue weight to four different levels. From the simulation results, we show that the SDRED decreases queuing delay and has more stable jitter characteristics than the existing RED, BLUE, ARED and DSRED schemes.