Congestion Control for Mixed TCP and UDP Traffic

Hyun-Seok CHAE  Myung-Ryul CHOI  Tae-Kyung CHO  

IEICE TRANSACTIONS on Communications   Vol.E88-B    No.10    pp.4097-4101
Publication Date: 2005/10/01
Online ISSN: 
DOI: 10.1093/ietcom/e88-b.10.4097
Print ISSN: 0916-8516
Type of Manuscript: LETTER
Category: Internet
RED,  AQM,  congestion control,  fairness,  

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In this letter, we propose a protocol sensitive random early detection algorithm for active queue management to improve fairness between TCP and UDP flows and to reduce delay time with small overheads. The algorithm classifies the packets into responsive and unresponsive flows, and applies the RED algorithm individually to each classified group. Using ns-2 simulations, we showed the effectiveness of the proposed PSRED algorithm compared with several well-known AQM schemes, such as RED and RED-PD algorithms.