Enabling Agile Software-Defined and NFV based Energy-Efficient Operations in TWDM-PON

Pakpahan, Andrew Fernando; Hwang, I‐Shyan; Liem, Andrew Tanny

doi:10.1109/citsm47753.2019.8965420

Cited by 6 publications

(9 citation statements)

References 10 publications

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“…These applications use a programming language that simplifies the rapid deployment of new services and capabilities. The SDN and its NFV applications can be used to manage the PON devices of different standards in a coordinated and dynamic manner [ 98 ].…”

Section: Implementation Of Sdn-based Energy Conservation Concepts In ...mentioning

confidence: 99%

“…In addition, an energy-efficient SD optical access architecture based on TWDM–PON was proposed in ref. [ 98 ] ( Table 5 ). In this architecture, the authors enhanced existing fiber–optic network equipment with SD capabilities.…”

Section: Implementation Of Sdn-based Energy Conservation Concepts In ...mentioning

confidence: 99%

“…The authors in ref. [ 98 ] also evaluated the performance and EE of the proposed system in various scenarios which consider factors such as packet delay, link capacity and data loss in the network. The simulation results showed that various trade-offs should be considered when evaluating the EE of the system.…”

Section: Implementation Of Sdn-based Energy Conservation Concepts In ...mentioning

confidence: 99%

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Advances in Improving Energy Efficiency of Fiber–Wireless Access Networks: A Comprehensive Overview

Lörincz

Klarin

Begušić

2023

Sensors

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Due to the growing impact of the information and communications technology (ICT) sector on electricity usage and greenhouse gas emissions, telecommunication networks require new solutions which will enable the improvement of the energy efficiency of networks. Access networks, which are responsible for the last mile of connectivity and also for one of the largest shares in network energy consumption, are viable candidates for the implementation of new protocols, models and methods which will contribute to the reduction of the energy consumption of such networks. Among the different types of access networks, hybrid fiber–wireless (FiWi) networks are a type of network that combines the capacity and reliability of optical networks with the flexibility and availability of wireless networks, and as such, FiWi networks have begun to be extensively used in modern access networks. However, due to the advent of high-bandwidth applications and Internet of Things networks, the increased energy consumption of FiWi networks has become one of the most concerning challenges required to be addressed. This paper provides a comprehensive overview of the progress in approaches for improving the energy efficiency (EE) of different types of FiWi networks, which include the radio-and-fiber (R&F) networks, the radio-over-fiber networks (RoF), the FiWi networks based on multi-access edge computing (MEC) and the software-defined network (SDN)-based FiWi networks. It also discusses future directions for improving the EE in the FiWi networks.

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Section: Implementation Of Sdn-based Energy Conservation Concepts In ...mentioning

confidence: 99%

Section: Implementation Of Sdn-based Energy Conservation Concepts In ...mentioning

confidence: 99%

Section: Implementation Of Sdn-based Energy Conservation Concepts In ...mentioning

confidence: 99%

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Advances in Improving Energy Efficiency of Fiber–Wireless Access Networks: A Comprehensive Overview

Lörincz

Klarin

Begušić

2023

Sensors

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“…The most studied and common energy conservation scheme for PON is CSM [32,33]. In CSM, most of the existing studies have neglected the role of the DWBA or DBA process, which plays a key role in the optimization of the CSM process.…”

Section: Related Workmentioning

confidence: 99%

“…The study in [39] also presents hybrid doze and sleep mode assignments while keeping in view US and DS queues for an EPON-based architecture. The study in [33] achieves energy efficiency by switching OLT transceivers to lower rate or turning them off in a SDN architecture, but it requires SDN-compliant OLT architecture.…”

Section: Related Workmentioning

confidence: 99%

Enhanced Energy Savings with Adaptive Watchful Sleep Mode for Next Generation Passive Optical Network

et al. 2022

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A single watchful sleep mode (WSM) combines the features of both cyclic sleep mode (CSM) and cyclic doze mode (CDM) in a single process by periodically turning ON and OFF the optical receiver (RX) of the optical network terminal (ONT) in a symmetric manner. This results in almost the same energy savings for the ONTs as achieved by the CSM process while significantly reducing the upstream delays. However, in this study we argue that the periodic ON and OFF periods of the ONT RX is not an energy efficient approach, as it reduces the ONT Asleep (AS) state time. Instead, this study proposes an adaptive watchful sleep mode (AWSM) in which the RX ON time of ONT is minimized during ONT Watch state by choosing it according to the length of the traffic queue of the type 1 (T1) traffic class. The performance of AWSM is compared with standard WSM and CSM schemes. The investigation reveals that by minimizing the RX ON time, the AWSM scheme achieves up to 71% average energy saving per ONT at low traffic loads. The comparative study results show that the ONT energy savings achieved by AWSM are 9% higher than the symmetric WSM with almost the same delay and delay variance performance.

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Energy evaluation for a dynamic and reconfigurable TWDM‐PON on a novel network traffic adaptable pattern

Mbelu,

Toycan,

Bashiry

et al. 2024

Int J Communication

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SummaryEven with existing methodologies, dynamic resource allocation, service inconsistency, operational costs, and excess energy/power consumption in optical access networks remain the key challenges for the next‐generation passive optical network (NG‐PON) design and development. This paper introduces a novel method for analyzing energy/power consumption in time and wavelength division multiplexed (TWDM) passive optical networks (PONs) with a ring‐based topology. We propose subscriber‐based channel allocation models (CAMs) for on‐demand services, allocate bandwidth dynamically, and evaluate their downstream power consumption. To determine the necessary optical devices for the various CAMs, we investigate subscriber take‐up rates by optimizing the utilization of optical components based on active subscribers. Implementing a novel Poisson distribution‐based network traffic model addresses energy‐related concerns and explores optimization techniques to minimize power and improve energy efficiency. With a take‐up rate of 64 active subscribers, simulation results show significant power consumption reductions ranging from 62.2 to 67.7%, achieved by the proposed subscriber‐based architecture models with varying subscriber counts, when compared with the conventional model. The model with the most subscribers (2048 subscribers) saves the most energy by reducing power consumption to 292 W from the conventional model's (2048 subscribers) 440 W. Furthermore, the model with the most subscribers saves 33.4% of energy, outperforming other subscriber‐based architecture models without affecting QoS even during peak hours of the day. These numerical results show that TWDM‐PONs with the most subscribers exhibit improved energy efficiency than the conventional and other proposed subscriber‐based architecture models.

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Enabling Agile Software-Defined and NFV based Energy-Efficient Operations in TWDM-PON

Cited by 6 publications

References 10 publications

Advances in Improving Energy Efficiency of Fiber–Wireless Access Networks: A Comprehensive Overview

Advances in Improving Energy Efficiency of Fiber–Wireless Access Networks: A Comprehensive Overview

Enhanced Energy Savings with Adaptive Watchful Sleep Mode for Next Generation Passive Optical Network

Energy evaluation for a dynamic and reconfigurable TWDM‐PON on a novel network traffic adaptable pattern

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