Bandwidth efficiency in the next generation access architecture XG-PON

Kyriakopoulos, Constantine A.; Papadimitriou, Georgios I.

doi:10.1109/icufn.2016.7537154

Cited by 5 publications

(5 citation statements)

References 8 publications

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“…Several DBA algorithms have been studied while considering one wavelength in the system [12][13][14][15][16]. McGarry et al provided a comprehensive study about throughput and delay performance of various DBAs with different combinations of grant scheduling frameworks, grant sizing and grant scheduling [13].…”

Section: A Related Workmentioning

confidence: 99%

High Bandwidth Utilization DWBA Algorithm for Upstream Channel in NG-EPON

Hui

Gan

et al. 2022

IEEE Access

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In this paper, an (ONU-load and RTTs)-based (OLR) dynamic wavelength and bandwidth allocation (DWBA) algorithm for upstream channel in next-generational Ethernet passive optical network (NG-EPON) is proposed. By proposing adaptive threshold grouping algorithm, the waste of bandwidth resources caused by massive guard timeslots and mismatch between assigned transmission window and frame size is reduced. By adjusting the Optical Network Unit (ONU) scheduling order, the idle time caused by Round-Trip Times (RTTs) is reduced. By proposing joint ONU grouping and RTT scheduling mechanism, load balance among wavelengths is achieved. By proposing a fair allocation scheme, the fairness of bandwidth granting for each ONU is ensured. Finally, by the simulation, the effectiveness of proposed algorithm is demonstrated. The simulation indicates that the rate of bandwidth utilization, the average package delay, the scheduling cycle and the network throughput in the system based on proposed algorithm have better performance.

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Section: A Related Workmentioning

confidence: 99%

High Bandwidth Utilization DWBA Algorithm for Upstream Channel in NG-EPON

Hui

Gan

et al. 2022

IEEE Access

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“…The work [13] compares available DBA algorithms for XG-PON networks such as Iris, GIANT, and SFDBA (Simple and Feasible Dynamic Bandwidth Allocation). The SFDBA algorithm was proposed by Han [14] in contrast to the other two methods; the T-CONT uses the priorities unfairly.…”

Section: Related Workmentioning

confidence: 99%

“…It is useful if the traffic, represented by T-CONT 4, is dominating. The article [13] presents the results with average allocation ID delay for every ONU where Iris DBA has the best results, although the 8 ONUs were only taken into account. The real network does not have only 8 ONUs per OLT interface; it can have up to 64 ONUs per OLT interface.…”

Section: Related Workmentioning

confidence: 99%

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Modified GIANT Dynamic Bandwidth Allocation Algorithm of NG-PON

Horváth

Oujezský

Münster

et al. 2017

JCOMSS

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Gigabit passive optical networks have been widely deployed due to the fact that the cost of their implementation is still decreasing. What is more important, we are facing theproblem with increasing demands on the transmission bandwidth. Regarding this issue, the ITU develops another two standards supporting higher downstream bitrate. The XG-PON standard is the first platform under the developing, and the NG-PON2 is the second standard. The first one provides compatibility and increases the downstream capacity of 10 Gbit/s and the second standard has the same assumptions, but does not have backward compatibility. In this article, we discuss only XG-PON networks. We choose amendment as the dynamic bandwidth allocation algorithms, and we have compared it with the original specification and with our modification. The primary intention of that modification is to reduce the delay of Triple Play (data, video, and voice) services. These services are represented by TCONT (Transmission Container), which is used to improve the PON system upstream bandwidth allocation and transmission status dynamically. As NS-3 simulator does not support the direct mapping of Triple Play services into T-CONT and their labeling. We focus on a delay value for Triple Play services which was reduced by own modification in a GIANT algorithm. On the other hand, we cannot reduce the delay value for VoIP services because it has the highest priority by T-CONT.

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“…The question of dynamic bandwidth allocation is widely discussed [7], [8], however the area of EPON network dominated initially. This changed with the arrival of XG-PON networks [9], [10]. Our main goal was to implement static bandwidth allocation (although it is not being used in reality), which could be further modified for dynamic models.…”

Section: Introductionmentioning

confidence: 99%

Simulations of Grant Allocation in NG-PON2 Networks Using OPNET Modeler

Horváth

Cymorek

Münster

et al. 2018

JCOMSS

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PONs (Passive Optical Networks) are the most promising networks for the future. In 1998, the first standard of PONs was developed. Since that time, quality of optical transmissions and technologies has been massively improved and today's standards are capable of transferring an enormous amount of data. For example, NG-PON2 networks are able to transfer up to 40 Gbit/s, which means these networks provide subscribers with a symmetric bandwidth up to 10 Gbit/s using 4 different wavelengths. The higher transmission speeds are required, the more sophisticated bandwidth allocation reflecting requirements of each ONU (Optical Network Unit) in real-time is necessary. This article deals with implementation of NG-PON2 networks using OPNET Modeler and simulations of static and dynamic grants allocations. We also present a modification of dynamic bandwidth allocation for increasing the free bandwidth of idle ONU to heavily loaded ONU(s). We propose a simplified NG-PON2 (Next-Generation PON stage 2) network, for example, activation machine for ONUs is not implemented. At present, OPNET Modeler is being used to simulate EPON (Ethernet PON) networks that use a different approach for data transmission. Thanks to its own implementation, basic data transmission in NG-PON2 networks, and simulations of algorithms for dynamic bandwidth allocation can be achieved.

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Bandwidth efficiency in the next generation access architecture XG-PON

Cited by 5 publications

References 8 publications

High Bandwidth Utilization DWBA Algorithm for Upstream Channel in NG-EPON

High Bandwidth Utilization DWBA Algorithm for Upstream Channel in NG-EPON

Modified GIANT Dynamic Bandwidth Allocation Algorithm of NG-PON

Simulations of Grant Allocation in NG-PON2 Networks Using OPNET Modeler

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