Delay models in ethernet long-reach passive optical networks

Dixit, Abhishek; Lannoo, Bart; Colle, Didier; Pickavet, Mario; Demeester, Piet

doi:10.1109/infocom.2015.7218499

Cited by 11 publications

(11 citation statements)

References 16 publications

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“…Whereas, in the ADWA algorithm, t w depends on the instantaneous network load where we consider self-similar traffic. In self-similar traffic there is a burst of packets in the on-period, and no packets are generated in the off-period [27]. Further, the CO initiates the wavelength switching when the instantaneous load on a wavelength becomes more than the threshold, which happens when a minimum u on users are in the on-period.…”

Section: ) Delay Model For Multiple Wavelength Architecturementioning

confidence: 99%

Converged Medium Access Control and Dynamic Bandwidth Allocation for Radio-Over-Fiber Networks

2021

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For supporting the upcoming applications, wireless mobile users require high bandwidth. To serve these requirements, a wireless network that has an optical backbone with a colossal bandwidth capacity is required. The radio-over-fiber (RoF) network is a promising solution that can provide high bandwidth. To accomplish this goal, we propose a converged medium access control (MAC) protocol for the RoF network, which uses a single-gate or multi-gate polling algorithm for time and wavelength allocation to the users. We propose an analytical delay model for single and multiple wavelength architectures, considering the user identification and data transfer delay for single-gate and multi-gate polling algorithms. We verify it with the results obtained from simulations. Finally, we present the mean delay and packet loss rate of the proposed algorithm by varying the user load and traffic burstiness and prove that the proposed algorithm gives better delay performance and a lower packet loss than the state-of-the-art algorithms.INDEX TERMS Dynamic bandwidth allocation, fiber wireless network, medium access control protocol, radio-over-fiber.

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Section: ) Delay Model For Multiple Wavelength Architecturementioning

confidence: 99%

Converged Medium Access Control and Dynamic Bandwidth Allocation for Radio-Over-Fiber Networks

2021

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“…In this section, we present a model that analyses the delay behavior of the proposed algorithm. Additionally, to recreate Internet traffic behavior, we use Pareto distributed bursty sources [30], [31]. In these sources, there is a burst of packets in the ON period (T on ).…”

Section: Delay Analysis Considering Pareto Distributed Sourcesmentioning

confidence: 99%

Bin-Packing-Based Online Dynamic Bandwidth and Wavelength Allocation Algorithm in Super-PON

Garg¹,

Dixit²

2021

IEEE Access

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Super passive optical network (Super-PON) is a next-generation Ethernet PON (NG-EPON) candidate that is envisaged to provide high data rate and low latency. For NG-EPON, there are two types of algorithms that manages bandwidth and wavelength scheduling, namely offline and online. The latter method is more scalable and efficient than the former method. Several online algorithms exist that propose schemes to manage wavelength and bandwidth scheduling. However, these algorithms lack in efficient wavelength utilization and switching. In this work, we propose a novel online bin-packing based dynamic bandwidth and wavelength allocation (DBWA) algorithm for Super-PON, namely updated best fit binpacking (UBF-BP). This algorithm limits the wavelength switching per cycle, and uses the modified version of best fit bin-packing (BF-BP) technique for optimal wavelength allocation. Simulation results show that the proposed DBWA algorithm has a low complexity and overcomes the inefficiencies of wavelength utilization and switching. This results in lower network delay and higher channel utilization than the stateof-the-art DBWA. Furthermore, to verify the correctness of the proposed algorithm, we propose an analytical model and validate these simulation results with the analytical results.INDEX TERMS Bin-packing, DBWA, delay analysis, NG-EPON, online algorithm, Super-PON.

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“…In addition, Shi et al investigated the variance of ONU propagation delays and found that the SPD scheme performs better under large variance scenarios [26]. To further mask ONU propagation delays between consecutive polling cycles, the multi-thread polling mechanism is proposed and investigated [27], [28]. By allowing an ONU to send the next request before receiving the respond to the previous request, polling cycle time, channel utilization efficiency, packet delay, and network throughput are all optimized, especially under long-reach network scenarios.…”

Section: B Masking Onu Propagation Delaysmentioning

confidence: 99%

Study on the Solutions to Heterogeneous ONU Propagation Delays for Energy-Efficient and Low-Latency EPONs

Zhai

et al. 2020

IEEE Access

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The scattered Optical Network Units (ONUs) in an optical access network have different propagation delays. In an Ethernet passive optical network (EPON) adopting the traditional Interleaved Polling with Adaptive Cycle Time (IPACT) scheme, such ONU propagation delay difference will waste network resources and will degrade both network delay performance and network energy efficiency in delivering low-latency services. In this paper, to deal with the heterogeneous ONU propagation delays problem, two solutions are proposed and investigated. The first solution, namely the Upstream Postponing with ONU Dozing (UP-OD) scheme, is to properly postpone the upstream transmissions of those ONUs having relatively short propagation delays to improve channel utilization efficiency, and ONU doze mode is incorporated to enhance network energy efficiency. The second solution, namely the Identical Fiber Length with ONU Sleeping (IFL-OS) scheme, is to adopt an identical distribution fiber length for ONUs to enhance channel utilization, and ONU sleep mode is incorporated for energy consumption reduction. Simulation results show that both the UP-OD scheme and the IFL-OS scheme reduce network delay and improve network energy efficiency in delivering low-latency (<1 ms) data, and the IFL-OS scheme shows lower energy consumption in transmitting per bit of low-latency (<1 ms) data compared with the UP-OD scheme. Further practical value discussion shows that for the case of serving services requiring 1 ms delay, the UP-OD scheme is suitable for applying in the 1G-EPONs, whereas the IFL-OS scheme is considerable for the 10G-EPONs.

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Delay models in ethernet long-reach passive optical networks

Cited by 11 publications

References 16 publications

Converged Medium Access Control and Dynamic Bandwidth Allocation for Radio-Over-Fiber Networks

Converged Medium Access Control and Dynamic Bandwidth Allocation for Radio-Over-Fiber Networks

Bin-Packing-Based Online Dynamic Bandwidth and Wavelength Allocation Algorithm in Super-PON

Study on the Solutions to Heterogeneous ONU Propagation Delays for Energy-Efficient and Low-Latency EPONs

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