Authors: Junhua Zhang
Addresses: College of Science and Technology, Ningbo University, Ningbo, Zhejiang, 315212, China
Abstract: From industrial communications to real-time internet applications, end-to-end delay guarantee is one of the most important aspects of quality of service (QoS). As a new networking paradigm, software-defined networking (SDN) exposes an opportunity to provide this guarantee. In exploiting SDN, We can replace the legacy network devices to SDN forwarding units (SDN-FUs gradually. This paper focuses on the SDN replaced deployment problem, striving for providing real-time QoS provisioning in a network meanwhile. Utilising previous works originated from network calculus, we first propose the candidate nodes selection methods for upgrading legacy nodes to SDN-FUs and then present a routing algorithm located on SDN controller to direct the running of SDN-FUs. Via a simulation about a small network, we show that the delay of a flow passing through a network can reduce significantly with the usage of SDN.
Keywords: quality of service; QoS; software-defined networking; SDN; network models; network calculus; real-time.
International Journal of Autonomous and Adaptive Communications Systems, 2020 Vol.13 No.1, pp.11 - 22
Received: 30 Oct 2018
Accepted: 22 Mar 2019
Published online: 18 Dec 2019 *