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Active Queue Management (AQM) is used by routers to limit queue build-up by reacting pro-actively to incipient congestion and modern AQM algorithms attempt to keep queuing latency at a low level. However, current AQM algorithms have hard time to correctly manage load transients, resulting in delay spikes. They suffer from a horizon problem that prevents a router from acquiring a complete picture of...
The wide range of IoT applications creates a demand for various types of communication. While both types of communication, unreliable and reliable, are important, it is crucial to extend scalable congestion control in the Internet to cover IoT communication also. Constrained Application Protocol (CoAP), a web transfer protocol for constrained devices and networks proposed by Internet Engineering Task...
In the past, networks have been mainly optimized for good system throughput but recently achieving low delay has also gained notable traction. Active Queue Management (AQM) has long been recognized necessary for operating Internet routers with shorter standing queues but only limited deployment has occurred. The recent interest in AQM has resulted in new AQM proposals. In this paper we evaluate CoDel...
A bottleneck router typically resides close to the edge of the network where the aggregate traffic is often limited to a single or a few users only. With such limited aggregate traffic Random Early Detection (RED) on the bottleneck router is not able to properly respond to TCP slow start that causes rapid increase in load of the bottleneck. This results in falling back to tail-drop behavior or, at...
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