This paper presents preliminary work on PINK (Proactive INjection into acK), an AQM algorithm able to enhance TCP congestion control properties without dropping packets. PINK is a completely transparent solution that does not require any modification to the existing protocol stack of end hosts, and it is particularly suitable for high-delay PPDR systems. The algorithm is based on an explicit feedback scheme, able to enforce a fair bandwidth sharing among clients by modifying the Receive Window in TCP acknowledgements returning to them; such a feedback is computed for each flow, and it only needs the number of active connections, the flows RTTs and the shared link bandwidth. Therefore, PINK is a per-flow stateless AQM that works independently from the TCP algorithm used by clients, and it is fair regardless the flows RTTs, which is a key feature for PPDR systems. The effectiveness of the proposed algorithm is demonstrated using the ns-3 simulator.
PINK: Proactive INjection into acK, a queue manager to impose fair resource allocation among TCP flows / Casoni, Maurizio; Grazia, CARLO AUGUSTO; Klapez, Martin; Patriciello, Natale. - ELETTRONICO. - (2015), pp. 132-137. (Intervento presentato al convegno IEEE WiMob 2015 Workshop on Emergency Networks for Public Protection and Disaster Relief tenutosi a Abu Dhabi (U.A.E.) nel 19 October 2015) [10.1109/WiMOB.2015.7347952].
PINK: Proactive INjection into acK, a queue manager to impose fair resource allocation among TCP flows
CASONI, Maurizio;GRAZIA, CARLO AUGUSTO;KLAPEZ, MARTIN;PATRICIELLO, NATALE
2015
Abstract
This paper presents preliminary work on PINK (Proactive INjection into acK), an AQM algorithm able to enhance TCP congestion control properties without dropping packets. PINK is a completely transparent solution that does not require any modification to the existing protocol stack of end hosts, and it is particularly suitable for high-delay PPDR systems. The algorithm is based on an explicit feedback scheme, able to enforce a fair bandwidth sharing among clients by modifying the Receive Window in TCP acknowledgements returning to them; such a feedback is computed for each flow, and it only needs the number of active connections, the flows RTTs and the shared link bandwidth. Therefore, PINK is a per-flow stateless AQM that works independently from the TCP algorithm used by clients, and it is fair regardless the flows RTTs, which is a key feature for PPDR systems. The effectiveness of the proposed algorithm is demonstrated using the ns-3 simulator.
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