High-priority first dynamic wavelength and bandwidth allocation algorithm in TWDM-PON

Zhang, Lincong; Qi, Jia; Wei, Kefeng; Zhang, Wenbo; Feng, Yongxin; Hou, Weigang

doi:10.1016/j.yofte.2018.12.029

Cited by 10 publications

(4 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Concerning the quality of service (QoS) in TWDM-PON, some works have recently started to appear in the literature, but they are very limited. A high-priority first dynamic wavelength and bandwidth allocation algorithm in TWDM-PON is proposed in [41]. The DWBA is implemented using five types of transmission containers (T-CONTs), and it can execute four kinds of bandwidth strategies to effectively reduce the average delay, slightly improve bandwidth utilization, and ensure greater fairness for the diverse types of traffic.…”

Section: Dbas For Twdm-ponsmentioning

confidence: 99%

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

et al. 2021

View full text Add to dashboard Cite

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.

show abstract

Section: Dbas For Twdm-ponsmentioning

confidence: 99%

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

et al. 2021

View full text Add to dashboard Cite

show abstract

“…A TWDM-PON fronthaul network with four wavelengths is considered. The capacity of each wavelength is 2.5 Gbps, and η is set to 100 [34]. The simulation parameters are shown in Table 1.…”

Section: Comparison Algorithm and Simulation Setupmentioning

confidence: 99%

Joint Optical and Wireless Resource Allocation for Cooperative Transmission in C-RAN

Yang

Liao

Zhang

et al. 2020

Sensors

View full text Add to dashboard Cite

Cooperative multipoint transmission (CoMP) is one of the most promising paradigms for mitigating interference in cloud radio access networks (C-RAN). It allows multiple remote radio units (RRUs) to transmit the same data flow to a user to further improve the signal quality. However, CoMP may incur redundant data transmission over fronthaul network in the C-RAN. In a C-RAN employing CoMP, a key problem is how to coordinate heterogeneous resource allocation to maximize the cooperation gain while reducing the fronthaul load. In this paper, the cooperation transmission based on a multi-dimensional resource schedule (MRSCT) scheme, jointly considering user association, spectrum resource allocation, and wavelength resource allocation, is firstly envisioned in the underlying C-RAN integrating time and wavelength division multiplexing passive optical network (TWDM-PON) to maximize fronthaul efficiency. Then a two-timescale resource allocation framework including two sub-approaches is established. More specially, the first sub-approach mainly focuses on exploiting reinforcement learning to obtain a wavelength resource allocation strategy to relieve fronthaul traffic load. Moreover, the second sub-approach adopts the overlapping coalition formation game to establish a user-centric cooperative set, where spectrum resources are dynamically allocated to further alleviate the interference issue. The theoretical analysis and simulation results validate the performance of MRSCT scheme on the fronthaul efficiency, user experience, and system service capability.

show abstract

“…However, in the upstream direction (i.e., from the ONUs to OLT), the ONUs share the resources in a statistically multiplexed manner making this transmission control more strenuous than the downstream direction. Additionally, in a multi-wavelength net- VOLUME 4, 2016 work, overutilization of a few wavelengths leads to larger latency while underutilization results in an unbalanced use of bandwidth [9]. Hence, it is significant to present a vigorous scheme that effectively deals with bandwidth and wavelength management.…”

Section: Introductionmentioning

confidence: 99%

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

Garg¹,

Dixit²

2021

IEEE Access

View full text Add to dashboard Cite

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.

show abstract

High-priority first dynamic wavelength and bandwidth allocation algorithm in TWDM-PON

Cited by 10 publications

References 14 publications

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

Joint Optical and Wireless Resource Allocation for Cooperative Transmission in C-RAN

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

Contact Info

Product

Resources

About