Threshold configuration and routing optimization for PCN-based resilient admission control
Computer Networks: The International Journal of Computer and Telecommunications Networking
Marking conversion for pre-congestion notification
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
PCN-based flow termination with multiple bottleneck links
ICC'09 Proceedings of the 2009 IEEE international conference on Communications
PCN-based measured rate termination
Computer Networks: The International Journal of Computer and Telecommunications Networking
PCN-based marked flow termination
Computer Communications
Performance of PCN-based admission control under challenging conditions
IEEE/ACM Transactions on Networking (TON)
A fuzzy reinforcement learning approach for pre-congestion notification based admission control
AIMS'12 Proceedings of the 6th IFIP WG 6.6 international autonomous infrastructure, management, and security conference on Dependable Networks and Services
Trevi: watering down storage hotspots with cool fountain codes
Proceedings of the Twelfth ACM Workshop on Hot Topics in Networks
RCFT: A Termination Method for Simple PCN-Based Flow Control
Journal of Network and Systems Management
Journal of Network and Systems Management
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Pre-congestion notification (PCN) provides feedback about load conditions in a network to its boundary nodes. The PCN working group of the IETF discusses the use of PCN to implement admission control (AC) and flow termination (FT) for prioritized realtime traffic in a DiffServ domain. Admission control (AC) is a well-known flow control function that blocks admission requests of new flows when they need to be carried over a link whose admitted PCN rate already exceeds an admissible rate. Flow termination (FT) is a new flow control function that terminates some already admitted flows when they are carried over a link whose admitted PCN rate exceeds a supportable rate. The latter condition can occur in spite of AC, e.g., when traffic is rerouted due to network failures. This survey gives an introduction to PCN and is a primer for this new technology. It presents and discusses the multitude of architectural design options in an early stage of the standardization process in a comprehensive and streamlined way before only a subset of them is standardized by the IETF. It brings PCN from the IETF to the research community and serves as historical record.