A Backward Congestion Notification Scheme for Mixed ECN-Capable and ECN-Incapable TCP Flows

Ji-Cheol MOON
Byeong Gi LEE

Publication
IEICE TRANSACTIONS on Communications   Vol.E89-B    No.5    pp.1682-1684
Publication Date: 2006/05/01
Online ISSN: 1745-1345
DOI: 10.1093/ietcom/e89-b.5.1682
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Network
Keyword: 
ECN,  fair and fast,  backward congestion notification,  

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Summary: 
For backward compatibility, ECN-capable networks should be capable of handling both ECN-capable and ECN-incapable TCP flows. In this letter, we present a backward congestion notification (BCN) scheme that can provide fast congestion indication delivery, while improving fairness between ECN-capable and ECN-incapable flows. Simulation results reveal that the BCN scheme is more effective than the original ECN mechanism in terms of stability, throughput, and fairness.