Wavelength and Bandwidth Allocation for Mobile Fronthaul in TWDM-PON

Nakayama, Yu; Hisano, Daisuke

doi:10.1109/tcomm.2019.2939319

Cited by 35 publications

(31 citation statements)

References 34 publications

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“…If time division multiplexing-PON (TDM-PON) is used as the fronthaul, the upstream delay which originates from the TDM operation (processing and queuing delay) also needs to be considered as it could significantly affect the overall delay performance. To reduce delay of TDM-PON, wireless scheduling based PON has been previously studied with an upstream delay maintained in the vicinity of 50 µs [8].…”

Section: •Time Out Of Protocolmentioning

confidence: 99%

See 1 more Smart Citation

Comparison of Optical Transport Technologies for Centralized Radio Access Network Using Optical Ground Wire

Ikeda

Lim

Nirmalathas

et al. 2020

IEICE Trans. Commun.

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Communication networks for wide-scale distributed energy resources (DERs) including photovoltaics (PVs), wind, storage and battery systems and electric vehicles (EVs) will be indispensable in future power grids. In this paper, we compare optical fronthaul networks using existing optical ground wires (OPGWs) for centralized radio access network (C-RAN) architecture to realize cost effective wireless communication network expansion including low population area. We investigate the applicability of optical data transport technologies of physical layer split (PLS), analog radio-on-fiber (ARoF), and common public radio interface (CPRI). The deployment costs of them are comparatively analyzed. It was shown that physical layer split and analog radio-on-fiber with subcarrier multiplexing (SCM) result in lower cost than other technologies. key words: centralized radio access network (C-RAN), optical ground wire (OPGW), radio on fiber (RoF), smart grid

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Section: •Time Out Of Protocolmentioning

confidence: 99%

“…Actual required bandwidths vary depending on the user traffic. Therefore, in PLS, cost effective 10 Gbps optical transceivers or point-tomultipoint optical fiber access technique such as time and wavelength-division-multiplexed passive optical network (TWDM-PON) can be candidates [8], [9].…”

Section: Comparison Of Required Optical Bandwidth and Wavelength Chanmentioning

confidence: 99%

Comparison of Optical Transport Technologies for Centralized Radio Access Network Using Optical Ground Wire

Ikeda

Lim

Nirmalathas

et al. 2020

IEICE Trans. Commun.

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“…It has been predicted that connected devices will grow significantly to reach 100 billion devices by year 2025 [1]. Passive Optical Networks (PON) are one of the major driving forces behind residential broadband access and 5G networks [2] (for example, in cloud radio access networks (C-RAN) [3,4]), as they meet the ever-increasing demand for bandwidth-intensive applications such as ultra-high-definition TV, immersive video, and the stringent end-to-end latency required by mission-critical applications.…”

Section: Introductionmentioning

confidence: 99%

A QoS-Aware Dynamic Bandwidth Allocation Algorithm for Passive Optical Networks with Non-Zero Laser Tuning Time

et al. 2021

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The deployment of new 5G services and future demands for 6G make it necessary to increase the performance of access networks. This challenge has prompted the development of new standardization proposals for Passive Optical access Networks (PONs) that offer greater bandwidth, greater reach and a higher rate of aggregation of users per fiber, being Time- and Wavelength-Division Multiplexing (TWDM) a promising technological solution for increasing the capacity by up to 40 Gbps by using several wavelengths. This solution introduces tunable transceivers into the Optical Network Units (ONUs) for switching from one wavelength to the other, thus addressing the ever-increasing bandwidth demands in residential broadband and mobile fronthaul networks based on Fiber to the Home (FTTH) technology. This adds complexity and sources of inefficiency, such as the laser tuning time (LTT) delay, which is often ignored when evaluating the performance of Dynamic Bandwidth Allocation (DBA) mechanisms. We present a novel DBA algorithm that dynamically handles the allocation of bandwidth and switches the ONUs’ lasers from one wavelength to the other while taking LTT into consideration. To optimize the packet delay, we introduce a scheduling mechanism that follows the Longest Processing Time first (LPT) scheduling discipline, which is implemented over the Interleaved Polling with Adaptive Cycle Time (IPACT) DBA. We also provide quality of service (QoS) differentiation by introducing the Max-Min Weighted Fair Share Queuing principle (WFQ) into the algorithm. The performance of our algorithm is evaluated through simulations against the original IPACT algorithm, which we have extended to support multi-wavelengths. With the introduction of LPT, we obtain an improved performance of up to 73% reduction in queue delay over IPACT while achieving QoS differentiation with WFQ.

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“…It has been predicted that connected devices will grow significantly to reach 100 billion devices by year 2025 [1]. Passive Optical Networks (PON) are one of the major driving forces behind residential broadband access and 5G networks [2] (for example, in cloud radio access networks (C-RAN) [3,4]), as they meet the everincreasing demand for bandwidth-intensive applications such as ultra-high-definition TV, immersive video, and the stringent end-to-end latency required by mission-critical applications.…”

Section: Introductionmentioning

confidence: 99%

“…TWDM is a hybrid technique that combines Wavelength-division multiplexing (WDM) capacity expansion with the inherent resource granularity of a Time-division multiplexing (TDM-PON) to meet the growing demands for bandwidth, reach and aggregation [13]. Some TWDM-PON proposals, based on four wavelengths typically have a maximum throughput capacity of 40 Gbps, thus meeting the requirements of the NG-PON2 standards [4,14]. TWDM-PON is used as a major application in mobile fronthaul networks for connecting the centralized baseband unit (BBU) and remote radio heads (RRHs) in 5G C-RANs, which have extreme requirements in terms of capacity, latency, and cost-efficiency [15,16].…”

Section: Introductionmentioning

confidence: 99%

A QoS-Aware Dynamic Bandwidth Allocation Algorithm for Passive Optical Networks with Non-Zero Laser Tuning Time

Zehri¹,

Haastrup²,

Rivera³

et al. 2021

Preprint

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Time- and Wavelength-Division Multiplexing (TWDM) increases the capacity of Passive Optical Networks by up to 40 Gbps by using several wavelengths (typically four). It introduces tunable transceivers into the Optical Network Units (ONUs) for switching from one wavelength to the other, thus addressing the ever-increasing bandwidth demands in residential broadband and mobile fronthaul networks based on Fiber to the Home (FTTH) technology. This adds complexity and sources of inefficiency, such as the laser tuning time (LTT) delay, which is often ignored when evaluating the performance of Dynamic Bandwidth Allocation (DBA) mechanisms. We present a novel DBA algorithm that dynamically handles the allocation of bandwidth and switches the ONUs’ laser from one wavelength to the other while taking LTT into consideration. To optimize the packet delay, we introduce a scheduling mechanism that follows the Longest Processing Time first (LPT) scheduling discipline, which is implemented over the Interleaved Polling with Adaptive Cycle Time (IPACT) DBA. We also provide quality of service (QoS) differentiation by introducing the Max-Min Weighted Fair Share Queuing principle (WFQ) into the algorithm. The performance of our algorithm is evaluated through simulations against the original IPACT algorithm, which we have extended to support multi-wavelengths. We obtain an improved performance of up to 73% and 33% reduction in queue delay in, respectively, IPACT and WFQ.

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Wavelength and Bandwidth Allocation for Mobile Fronthaul in TWDM-PON

Cited by 35 publications

References 34 publications

Comparison of Optical Transport Technologies for Centralized Radio Access Network Using Optical Ground Wire

Comparison of Optical Transport Technologies for Centralized Radio Access Network Using Optical Ground Wire

A QoS-Aware Dynamic Bandwidth Allocation Algorithm for Passive Optical Networks with Non-Zero Laser Tuning Time

A QoS-Aware Dynamic Bandwidth Allocation Algorithm for Passive Optical Networks with Non-Zero Laser Tuning Time

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