PON in adolescence: from TDMA to WDM-PON

Grobe, Klaus; Elbers, Jörg-Peter

doi:10.1109/mcom.2008.4427227

Cited by 204 publications

(74 citation statements)

References 6 publications

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“…Several options including the WDM-PONs (Kani, 2010;Grobe and Elbers, 2008), hybrid TDM/WDM-PONs (Hyun et al, 2010), FiWi (Ghazisaidi and Maier, 2011;Tsagklas and Pavlidou, 2011), Advanced Modulation Techniques (AMTs) (Kamijoh et al, 2009;Chang et al, 2009), TDM-Based LR-OANs ( Van de Voorde et al, 2000;Shea and Mitchell, 2007b), TDM/CWDM-Based LR-OANs and TDM/DWDM-Based LR-OANs (Talli and Townsend, 2006;Shea and Mitchell, 2007c;Jung et al, 2012;Syuhaimi et al, 2013) were reviewed. Although many of these proposed architectures are interesting from the technical perspective, the cost, bandwidth per user and the number of accommodated subscribers remain the dominant factors for commercial success.…”

Section: Discussionmentioning

confidence: 99%

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Long-Reach Optical Access Networks (Lr-Oans): A Promising Candidate for Future Optical Access

Mohamed¹,

Ab-Rahman²

2014

American Journal of Applied Sciences

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The ever-increasing demand for broader bandwidth per user, which results from the continuous development of new bandwidth-hungry services and applications, creates the motivation to upgrade the currently deployed Time-Division Multiplexing Passive Optical Networks (TDM-PONs) to NextGeneration Optical Access Networks (NG-OANs). Beside the need for more bandwidth per user, a further extension in the range and an increase in the split ratio are highly desirable in PONs. These additional requirements can be achieved by adopting so-called Long-Reach Optical Access Networks (LR-OANs). LR-OANs offer a promising solution that ensures a significant number of users can be supported over a longer range. Moreover, they introduce a cost-effective approach in which both the access and metro segments of the telecommunication network are combined into one backhaul segment, which results in the consolidation of many central offices into one trunk-exchange. This cost-effective approach gave us the motivation to provide a comprehensive survey on the LR-OANs. In this study, we first provide a brief review of different potential technologies, proposed for next-generation optical access. We then provide a review of different stat-of-the-art LR-OAN architectures including opportunities and challenges in each one. A comparison among them based on key network specification is also provided.

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Section: Discussionmentioning

confidence: 99%

“…To further reduce the cost, it is recommended that Coarse Wavelength-Division Multiplexing (CWDM) be considered, in which 20 nm wavelength spacing is used, allowing extra tolerance for wavelength drift. A review of different WDM-PON architectures is provided in (Grobe and Elbers, 2008).…”

Section: Thementioning

confidence: 99%

Long-Reach Optical Access Networks (Lr-Oans): A Promising Candidate for Future Optical Access

Mohamed¹,

Ab-Rahman²

2014

American Journal of Applied Sciences

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“…Note that we have considered different OLT location which leads to independent power failures at the CAN improving reliability. OLT protection can be done either by duplicating the line terminal (LT) or by full OLT duplication [1]. Protecting the LT itself does not show much benefit to improve the unavailability and FIR of the OLT.…”

Section: A Protection Scenarios 1) Protection At the Canmentioning

confidence: 99%

“…long reach and large splitting ratio), while providing a high sustainable bandwidth for each user. Several wavelength division multiplexing (WDM)-based passive optical network (PON) architectures, possibly complemented by time division multiplexing (TDM) techniques, are able to support the NGOA requirements [1]. Compared with other NGOA architectures, hybrid wavelength and time division multiplexing (WDM/TDM) PON offers a relatively large splitting ratio, and consequently can achieve a lower cost and power consumption per user [2].…”

Section: Introductionmentioning

confidence: 99%

Efficient protection schemes for hybrid WDM/TDM Passive Optical Networks

Dixit

Lannoo

Colle

et al. 2012

2012 IEEE International Conference on Communications (ICC)

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Abstract-Hybrid WDM/TDM Passive Optical Network (PON) is a promising candidate for next-generation optical access (NGOA) solutions as it is able to offer a high splitting ratio and consequently achieves a relatively low cost and power consumption on a per-user basis compared with other NGOA architectures. On the other hand, the end users require a certain level of connection availability while the operators need to reduce the failure impact (i.e. to avoid a huge number of end users being affected by any single failure). Therefore, by evaluating the connection availability and failure impact robustness we identify the most efficient parts to provide resilience in a hybrid WDM/TDM PON from an operator and an end-user perspective. Then, we select the appropriate protection schemes to construct some novel reliable architectures and analyze their reliability performance in urban and rural scenarios. In this way, this paper provides a comprehensive insight into the most relevant protection mechanisms for hybrid WDM/TDM PONs.

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“…All these PON technologies fall under the category of time division multiplexed (TDM) PONs where access to the medium is shared based on allocation of different time-slots to different users [7]. Due to the point-to-multipoint architecture, the transmission modes of downstream and upstream traffic are different.…”

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confidence: 99%

A priority-based processor sharing model for TDM passive optical networks

Wang

Zukerman

Addie

et al. 2010

IEEE J. Select. Areas Commun.

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Abstract-The use of passive optical networks (PONs) enables access rates of multi-Gbit/sec bandwidth and provision of quality of service for high definition multimedia services. In this paper, we consider and analyse a generic multi-priority dynamic bandwidth allocation (DBA) algorithm for TDM PONs serving multimedia traffic in an upstream link. PON traffic is served strictly according to its priority. We consider this DBA algorithm using two approaches: (i) the algorithm assigns a fixed service quantum to each priority service and (ii) different service quanta are assigned to different priority services. The mean message delay is evaluated using a multiqueue processor sharing (MPS) model and an MPS with Heterogeneous Traffic (MPS-HT) model for the two approaches respectively. The MPS model is a classical processor sharing model limited by the critical assumption that there is egalitarian service sharing among all users, which is inefficient for multimedia applications in PONs. We extend the MPS model to a general MPS-HT model that enables the analysis of message delay performance in the case where the service quanta may be different for different services.

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PON in adolescence: from TDMA to WDM-PON

Cited by 204 publications

References 6 publications

Long-Reach Optical Access Networks (Lr-Oans): A Promising Candidate for Future Optical Access

Long-Reach Optical Access Networks (Lr-Oans): A Promising Candidate for Future Optical Access

Efficient protection schemes for hybrid WDM/TDM Passive Optical Networks

A priority-based processor sharing model for TDM passive optical networks

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