Application-aware software-defined EPON access network

Abstract

As bandwidth requirements of access networks continue to increase rapidly, especially due to the growth of streaming traffic, the need for resolving bandwidth contention among competing users and applications becomes more compelling. The proposed Software-Defined Ethernet Passive Optical Network (EPON) architecture utilizes an applicationlevel feedback from the client side (for video users) to the network through a Software-Defined-Network (SDN) controller to achieve better client-and-service-level differentiation in the downstream direction of an EPON access network. Numerical results obtained from simulation experiments demonstrate that the proposed architecture with downstream resource allocation for video streaming applications considerably reduce video stalls and increase video buffer level at the client applications leading to better Quality of Experience (QoE) for users along with better client-and-service-level differentiation. 

Software Defined Optical Networks (SDONs): A Comprehensive Survey

“…Future research on SDON QoS needs to further optimize the interactions of the controller with the network applications and data plane to quickly and correctly react to changing user demands and network conditions, so as to assure consistent QoS. The specific characteristics and requirements of video streaming applications have been considered in the few studies on video QoS [372]- [374]. Future SDON QoS research should consider a wider range of specific prominent application traffic types with specific characteristics and requirements, e.g., Voice over IP (VoIP) traffic has relatively low bit rate requirements, but requires low end-to-end latency.…”

“…6) Video Applications: The application-aware SDNenabled resource allocation application has been introduced by Chitimalla et al [372] to improve the video QoE in a PON access network. The resource allocation application uses application level feedback to schedule the optical resources.…”

“…[365] QoS Routing [366]- [369] QoS Management [370], [371] Video Appl. [372]- [374] ? Access Control and Security, Sec.…”

Utilização da Lógica Fuzzy em Redes PON Definidas por Software

“…Há trabalhos desenvolvidos que apresentam algumas formas de como redes PON podem ser inseridas em uma arquitetura SDN. O trabalho realizado por Chitimalla [4] propõe uma solução para o problema de como tratar de forma diferenciada os fluxos de uma OLT para suas ONUs, de acordo com as demandas dos usuários e aplicações. No mecanismo proposto um controlador SDN é conectado entre as ONUs e a OLT.…”

“…Entretanto a infraestrutura apresentada não possui a flexibilidade necessária para promover inovações rápidas e para provisionar novos recursos no tempo esperado que as aplicações atuais demandam [1][2][3]. Apesar das evoluções tecnológicas das redes PON, o atendimento aos parâmetros de Qualidade de Serviço (QoS) ainda são um desafio [4][5]. A estrutura destas redes é complexa e rígida, baseada em um conjunto de protocolos e algoritmos distribuídos em equipamentos proprietários, que não oferecem o dinamismo que os usuários requerem, como já acontece em outros ambientes virtualizados como os data centers.…”