On fairness and application performance of active queue management in broadband cable networks

We evaluate the performance of modern delay-based active queue management (AQM) algorithms in downstream DOCSIS 3.0 cable environments. Our simulation-based study involves scenarios that include tiered service levels and application workloads that include FTP, HTTP-based adaptive streaming (HAS), Vo...

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Veröffentlicht in:Computer networks (Amsterdam, Netherlands : 1999) Jg. 91; S. 390 - 406
Hauptverfasser: Hong, Gongbing, Martin, James, Westall, James M.
Format: Journal Article
Sprache:Englisch
Veröffentlicht: Amsterdam Elsevier B.V 14.11.2015
Elsevier Sequoia S.A
Schlagworte:
Active queue management
Algorithms
Application
Bandwidth
Bandwidths
Broadband
Broadband communication systems
Cable access
Cable television
Cable TV
Cables
Computer simulation
Delay
Deployment
Fairness
Feedback
Latency
Management
Network performance evaluation
Networks
Packet scheduling algorithms
Performance evaluation
Queueing
Queues
Queuing theory
Service introduction
Simulation
Studies
TCP (protocol)
Traffic flow
Workloads
Cable access
Packet scheduling algorithms
Network performance evaluation
Active queue management
ISSN:1389-1286, 1872-7069
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Beschreibung
Zusammenfassung:We evaluate the performance of modern delay-based active queue management (AQM) algorithms in downstream DOCSIS 3.0 cable environments. Our simulation-based study involves scenarios that include tiered service levels and application workloads that include FTP, HTTP-based adaptive streaming (HAS), VoIP, and web traffic. Our results show that AQM maintains target queuing delays and consequently provides strong isolation between responsive high bandwidth and low bandwidth latency sensitive flows. We also show that lowering target queuing delays exacerbates TCP’s RTT unfairness. Nevertheless, in the scenarios that we studied, observed application performance was not significantly impacted by the specific AQM in use. With the potential large deployment of AQM imminent for DOCSIS 3.0, the analysis presented in this paper provides timely feedback to the community concerning how delay-based AQM can manage bandwidth allocation fairness and application performance in realistic downstream DOCSIS 3.0 cable network systems.
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ISSN:1389-1286
1872-7069
DOI:10.1016/j.comnet.2015.08.018