Publication No 40738

Author(s)

Wagner, D.*

Title

Rate Adaptation for Hierarchical Packet Schedulers Considering Traffic Differentiation by Congestion Control

Abstract

Hierarchical packet schedulers in border network routers (BNGs) are used by Internet service providers to place the bottleneck to the BNG downstream interfaces. This prevents senders? traffic differentiation by using different congestion control algorithms (CCAs) from working across subscribers. Thus, during times of overload, such system equally reduces the bandwidth of foreground traffic, which is important for the user now, and of background traffic, which could be delayed. This thesis presents a new approach bringing together packet scheduling and congestion control. It aims at shifting resources during times of overload to foreground transmissions across subscribers. It introduces an extension for packet schedulers that distinguishes foreground and background traffic by monitoring the CCA behavior and during overload accordingly adapts the weights of a hierarchical packet scheduler. The approach allows an implementation with static computational effort for real access network topologies. A prototype implementation was evaluated using simulations incorporating unmodified widespread CCA implementations, e.g. of the Linux kernel.

Year

2019

Reference entry

Wagner, D.
Rate Adaptation for Hierarchical Packet Schedulers Considering Traffic Differentiation by Congestion Control
Dissertation, Universtiät Stuttgart, Informatik, Elektrotechnik und Informationstechnik, 2019

BibTex file

Download  [BIBTEX]

Full Text

Download  [PDF]