Mobile fronthaul over latency-optimized time division multiplexed passive optical networks

Anthapadmanabhan, N. Prasanth; Walid, Anwar; Pfeiffer, Thomas

doi:10.1109/iccw.2015.7247156

Cited by 21 publications

(11 citation statements)

References 16 publications

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“…By allocating less bandwidth for each ONU according to priority information, this method can achieves an ultra-low delay of 60 µs. An optimized TDM-PON with minimal latency for transport of constant bit rate fronthaul traffic was proposed using queuing theory [34], and it proves that latency less than 250 µs can be achieved in the TDM-PON fronthaul mathematical derivation. Also, authors in [35] propose a bandwidth allocation method with adaptive polling period which is a simple three-step allocation: the first two steps are based on the method proposed in [33], and the third step is to shorten the corresponding DBA cycle.…”

Section: Low-latency Guaranteementioning

confidence: 98%

Towards converged, collaborative and co-automatic (3C) optical networks

Ji¹,

Zhang²,

Wang³

et al. 2018

Sci. China Inf. Sci.

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The interconnection of all things is developing a new diagram of future information networks. However, it is difficult to realize future applications with only one single technique. Collaboration between multiple advanced techniques is leading the way for the development of future information networks. Optical communication is an enabling technique to achieve high speed, long reach, and low latency communication, which plays an important role on the transformation of information networks. To achieve these advantages that caters to the characteristics of future information networks, collaboration of multiple advanced techniques with optical, which is called "optical plus X", could realize the vision of "all things connected with networks". In this paper, we focus on the collaboration between optical networks with other techniques, mainly discuss four representative aspects, which are "optical plus IP", "optical plus radio", "optical plus computing", and "optical plus AI". We discuss the challenges, timely works, and developing trends. Finally, we give the future visions for optical network towards a collaborative, converged and co-automatic optical network. Keywords 5G optical transport networks, edge computing optical networks, IP over optical networks, AI-assisted optical networks, 3C optical networks

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Section: Low-latency Guaranteementioning

confidence: 98%

Towards converged, collaborative and co-automatic (3C) optical networks

Ji¹,

Zhang²,

Wang³

et al. 2018

Sci. China Inf. Sci.

View full text Add to dashboard Cite

show abstract

“…Likewise, the equalization delay for the ONUs must be reduced. So altogether, for fiber links of up to only a few kilometers in length, the total latency can be reduced to below 100 μs per direction: buffering for accommodating the slot sequence per frame (30 μs), compression/decompression (20 μs), FEC encoding/decoding (5 μs), travel time (5 μs/km), and buffering for ranging windows (e.g., 20 μs); the values in brackets are given as examples (see also [7]). …”

Section: Optical Transmission Technologies For Digital Fronthaulmentioning

confidence: 99%

Next Generation Mobile Fronthaul and Midhaul Architectures [Invited]

Pfeiffer¹

2015

J. Opt. Commun. Netw.

Self Cite

237

104

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Centralized processing is expected to bring about substantial benefits for wireless networks both on the technical side and on the economic side. While this concept is considered an important part of future radio access network architectures, it is more and more recognized that the current approach to fronthauling by employing the Common Public Radio Interface protocol will be inefficient for large-scale network deployments in many respects, and particularly for the new radio network generation 5G. In this paper, an overview is given of currently available optical fronthaul technologies, and of recently started activities toward more efficient and scalable solutions, and finally an outlook is given into which 5G specific service characteristics may further impact future backhaul, midhaul, and fronthaul networks.

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“…Practical experiments in [66] demonstrates C-RAN's facilitation of CoMP implementation with 50%-100% UL CoMP gain observed in field trials. [67] considers Time Division Multiplexed Passive Optical Network (TDM-PON) as transport for constant bitrate traffic, and shows that TDM-PONs can achieve a latency less than 250 µs. [68] presents digital signal processing techniques for channel aggregation and deaggregation, frequency-domain windowing, adjacent channel leak age ratio reduction, and synchronous transmission of both the IQ waveforms of wireless signals and the control words.…”

Section: ) Traditional Cpri Transportmentioning

confidence: 99%

A Survey of the Functional Splits Proposed for 5G Mobile Crosshaul Networks

Larsen

Checko²,

Christiansen

2019

IEEE Commun. Surv. Tutorials

330

211

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Pacing the way towards 5G has lead researchers and industry in the direction of centralized processing known from Cloud-Radio Access Networks (C-RAN). In C-RAN research, a variety of different functional splits is presented by different names and focusing on different directions. The functional split determines how many Base Station (BS) functions to leave locally, close to the user, with the benefit of relaxing fronthaul network bitrate and delay requirements, and how many functions to centralize with the possibility of achieving greater processing benefits. This work presents for the first time a comprehensive overview systematizing the different work directions for both research and industry, while providing a detailed description of each functional split option and an assessment of the advantages and disadvantages. This work gives an overview of where the most effort has been directed in terms of functional splits, and where there is room for further studies. The standardization currently taking place is also considered and mapped into the research directions. It is investigated how the fronthaul network will be affected by the choice of functional split, both in terms of bitrates and latency, and as the different functional splits provide different advantages and disadvantages, the option of flexible functional splits is also looked into.

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Mobile fronthaul over latency-optimized time division multiplexed passive optical networks

Cited by 21 publications

References 16 publications

Towards converged, collaborative and co-automatic (3C) optical networks

Towards converged, collaborative and co-automatic (3C) optical networks

Next Generation Mobile Fronthaul and Midhaul Architectures [Invited]

A Survey of the Functional Splits Proposed for 5G Mobile Crosshaul Networks

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