Low latency dynamic bandwidth allocation for 100km long reach 10G-EPON

Murayama, Daisuke; Oota, Noriyuki; Suzuki, Keisuke; Yoshimoto, Naoto

doi:10.1109/cqr.2012.6267104

Cited by 4 publications

(4 citation statements)

References 7 publications

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“…This is because most of the processing of our DBA is handled by H/W. In the conventional method-SR-DBA with priority control-, the minimum latency is 500 µs [7]. Our DBA decreases the latency by 88% compared with the conventional one.…”

Section: Implementation and Experimental Setupmentioning

confidence: 76%

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Implementation of ultra-low latency dynamic bandwidth allocation method for TDM-PON

2016

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This paper proposes a new dynamic bandwidth allocation (DBA) method with low latency for campus area networks (Campus-LANs) and mobile fronthaul (MFH) based on time division multiplexing passive optical network (TDM-PON). These network systems require low latency of under 100 µs and priority control. The proposed method involves only two steps for allocation. The DBA cycle value, which is proportional to the latency, can be minimized because this method is very simple and appropriate for hardware (H/W) implementation. We implemented the proposed DBA on 10G-EPON MAC SoC and evaluated the allocation results and the latency on the 10G-EPON system. Our DBA offers ultra-low latency of 60 µs with priority control.

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Section: Implementation and Experimental Setupmentioning

confidence: 76%

“…However, the efficiency of bandwidth utilization with the NSR method is lower than with the SR method [7]. IPACT [8] can reduce the GPT owing its simple SR-DBA method, but latency increases as the number of linked up ONUs increases because of the adaptive DBA cycle depends the amounts of requests from the ONUs.…”

Section: Introductionmentioning

confidence: 99%

Implementation of ultra-low latency dynamic bandwidth allocation method for TDM-PON

2016

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“…But these methods affect short-distance ONUs or change the bandwidth allocation method for short-distance ONUs. So we proposed a new DBA method for long-reach PONs in which the OLT allocates bandwidth to a short-distance ONU using the conventional method and allocates bandwidth to long-distance ONUs using predictive DBA with the same allocation cycle based on the RTT of the short-distance ONUs [19]. In this paper, the low-latency bandwidth allocation algorithm for a long-reach EPON is improved and detailed results are provided that clarify the validity of the proposed method and demonstrate a low latency and relatively high bandwidth efficiency.…”

Section: B Dba For Eponsmentioning

confidence: 99%

Low-Latency Dynamic Bandwidth Allocation for 100 km Long-Reach EPONs

Murayama

Oota

Suzuki

et al. 2012

J. Opt. Commun. Netw.

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We propose a new dynamic bandwidth allocation (DBA) method for long-reach passive optical networks that can reduce the upstream latency. With this method, an optical line terminal allocates bandwidth to long-distance (up to 100 km) optical network units (ONUs) with a transmission request prediction and reduces the latency of the long-distance ONUs. This has no influence on the latency of short-distance ONUs even if they coexist with long-distance ONUs. The results of real machine experiments show that this new DBA method achieves a smaller latency with long-distance ONUs than the conventional DBA technique, and that there is no influence on short-distance ONUs. The latency time and jitter are kept below 1300 µs and 1000 µs, respectively, for both long-and short-distance ONUs. The experimental results also reveal the effect of the proposed method on bandwidth utilization efficiency and fairness. The degradation in bandwidth utilization efficiency when one long-distance ONU is added is small (0.3%), and the fairness index degradation is negligible (less than 0.1%), when the parameters are optimized. These results indicate the validity of the proposed DBA method.

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“…As one of these studies, an access aggregation convergence network has proposed by the application of long reach PON to the aggregation network in terms of the reduction of the aggregation network's CAPEX [9]. However, the application of long reach PON has resulted in several issues, such as optical burst mode amplifications to support long reach with lower CAPEX [10] and a decrease in the network delay caused by dynamic bandwidth allocation (DBA) [11]. As a different method to achieve a cost-effective aggregation network, rather than a converged approach for the access network in terms of current network architecture, we have been studying an approach to incorporate the optical burst control techniques used in the PON, such as 10G-EPON, to the aggregation network, specifically, the optical Layer-2 switch network (OL2SW-NW) [12]- [18].…”

Section: Introductionmentioning

confidence: 99%

Bufferless Bidirectional Multi-Ring Networks with Sharing an Optical Burst Mode Transceiver for Any Route

Hattori

Nakagawa

Matsuda

et al. 2017

IEICE Trans. Inf. & Syst.

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SUMMARYImprovement of conventional networks with an incremental approach is an important design method for the development of the future internet. For this approach, we are developing a future aggregation network based on passive optical network (PON) technology to achieve both cost-effectiveness and high reliability. In this paper, we propose a timeslot (TS) synchronization method for sharing a TS from an optical burst mode transceiver between any route of arbitrary fiber length by changing both the route of the TS transmission and the TS control timing on the optical burst mode transceiver. We show the effectiveness of the proposed method for exchanging TSs in bidirectional bufferless wavelength division multiplexing (WDM) and time division multiplexing (TDM) multi-ring networks under the condition of the occurrence of a link failure through prototype systems. Also, we evaluate the reduction of the required number of optical interfaces in a multi-ring network by applying the proposed method.

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Low latency dynamic bandwidth allocation for 100km long reach 10G-EPON

Cited by 4 publications

References 7 publications

Implementation of ultra-low latency dynamic bandwidth allocation method for TDM-PON

Implementation of ultra-low latency dynamic bandwidth allocation method for TDM-PON

Low-Latency Dynamic Bandwidth Allocation for 100 km Long-Reach EPONs

Bufferless Bidirectional Multi-Ring Networks with Sharing an Optical Burst Mode Transceiver for Any Route

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