Performance optimization of OADM based DP-QPSK DWDM optical network with 37.5 GHz channel spacing

Sharma, Neeraj; Agrawal, Sunil; Kapoor, Vinod

doi:10.1016/j.osn.2021.100606

Cited by 9 publications

(2 citation statements)

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“…In our initial study [16] it was shown that the asymmetrical selection of T ON and T OFF leads to higher energy savings (ES) and lower US delays; however, no mechanism for the computation of T ON was given. In this study, the idea of an intelligent PON system as earlier presented in [45] is used for the computation of the T ON using Equation (1), where β DS is the DS traffic arrival rate and R DS is the DS Line rate of the PON. The US traffic is not considered for this calculation because ONT cannot transmit during the Watch state and US traffic demand cannot be sent to OLT.…”

Section: Adaptive Watchful Sleep Mode (Awsm) 41 System Descriptionmentioning

confidence: 99%

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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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Section: Adaptive Watchful Sleep Mode (Awsm) 41 System Descriptionmentioning

confidence: 99%

“…The ever-growing use of the Internet in our daily lives is constantly pushing the demand for higher capacity and high-performance optical core [1] and access networks [2]. The International Telecommunication Union (ITU) 2020 report [3] shows that Internet access at homes increased by 10% compared to 2019.…”

Section: Introductionmentioning

confidence: 99%

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

et al. 2022

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Quantifying Bypass Traffic in Partially Meshed Transparent Optical Networks

2023

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This work investigates the transparent bypassing capacity requirements of elastic backbone optical networks to determine the all-optical cross-connection capacity needed at network nodes. Topological parameters have been used to develop a random network generator, and the generated topologies are evaluated. Reference values are obtained and applied to well-known topologies, and extensive simulations are conducted to obtain network nodes' bypassing traffic under realistic traffic profiles. The study reveals that although bypassing traffic varies by topology, it never exceeds 9% of total network traffic per node degree. These findings can help properly dimension network nodes by determining the necessary quantity of transceivers and cross-connection capacity based on the network topology and expected traffic.

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