Application-aware software-defined EPON access network

Abstract

As bandwidth requirements of users in passive optical networks (PONs) continue to increase rapidly, especially due to the growth of video-streaming traffic, the need for resolving bandwidth contention among competing users and applications becomes more compelling. To address this problem, we propose Application-Aware Software-Defined Ethernet Passive Optical Network (EPON) architecture. It utilizes application-level feedback from the client side (for video users) to the network, through a Software-Defined-Network (SDN) controller, to achieve better client/service-level differentiation in the downstream direction of an EPON access network. We adopt adaptive video-streaming which utilizes feedbacks regarding network congestion for improving Quality of Experience (QoE) of videostreaming clients. Numerical results for video-streaming applications demonstrate that the proposed architecture for downstream resource allocation considerably reduces video stalls, increases video buffer levels, and also reduces video-switching rate leading to better QoE for users as a result of better client and service-level differentiation.

5G-Enabled Tactile Internet Resource Provision via Software-Defined Optical Access Networks (SDOANs)

“…The Transport layer (control plane) is responsible for transmitting and receiving the data packet information from the applications orchestrating the client to the SDN controller. The infrastructure layer (data plane) is where the actual physical transfer of control and data packets takes place [48]. The SDOAN-SDN Controller has an interface with the clients (SDN application management, i.e., Tactile Internet-DWBA service) via north-bound API (NB-API).…”

GANA-VDC: Application-Aware with Bandwidth Guarantee in Cloud Datacenters

“…The networks need to sophisticatedly delve deeper into tenant-applications to enhance high performance. The ability to benefit from application-awareness depends upon SDN, particularly separating the data plane from the control plane, and thus facilitates on the fly network architecture reconfiguration and dynamic control of efficient resource allocation [28]. This opens application-aware networking making VDC-based application-aware networking a crucial and attractive cloud datacenter approach.…”