Optical Layer 2 Switch Network with Bufferless Optical TDM and Dynamic Bandwidth Allocation

Hattori, Kyota; Homemoto, Toru; Nakagawa, Masahiro; Kimishima, Naoki; Katayama, Masaru; Misawa, Akira

doi:10.1587/transele.e99.c.189

Cited by 9 publications

(13 citation statements)

References 19 publications

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“…Therefore, metro aggregation network architecture for IoT traffic should adapt to shorter-timescale traffic fluctuations and achieve flexible resource utilization. To address this issue, we previously proposed an optical subwavelength switched network architecture called the optical layer-2 switch network (OL2SW-NW) that can efficiently accommodate dynamic traffic in metro aggregation networks [7].…”

Section: Traffic Characteristics Of Iot Servicesmentioning

confidence: 99%

“…The live migration of VNFs is valuable for efficient resource use. We also proposed the Optical Layer 2 Switch Network (OL2SW-NW) [7] which is an expansion of dynamic bandwidth allocation [10] for multi-point to multi-point network. Moreover, we proposed virtual edge architecture that combines VNFs and OL2SW-NW for fixed network using the PON access network.…”

Section: Network Control Of the Virtual Edge And Variable Bandwidth Pmentioning

confidence: 99%

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Resource Management Architecture of Metro Aggregation Network for IoT Traffic

Misawa

Katayama

2018

IEICE Trans. Commun.

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SUMMARY IoT (Internet of Things) services are emerging and the bandwidth requirements for rich media communication services are increasing exponentially. We propose a virtual edge architecture comprising computation resource management layers and path bandwidth management layers for easy addition and reallocation of new service node functions. These functions are performed by the Virtualized Network Function (VNF), which accommodates terminals covering a corresponding access node to realize fast VNF migration. To increase network size for IoT traffic, VNF migration is limited to the VNF that contains the active terminals, which leads to a 20 % reduction in the computation of VNF migration. Fast dynamic bandwidth allocation for dynamic bandwidth paths is realized by proposed Hierarchical Time Slot Allocation of Optical Layer 2 Switch Network, which attain the minimum calculation time of less than 1/100.

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Section: Traffic Characteristics Of Iot Servicesmentioning

confidence: 99%

Section: Network Control Of the Virtual Edge And Variable Bandwidth Pmentioning

confidence: 99%

Resource Management Architecture of Metro Aggregation Network for IoT Traffic

Misawa

Katayama

2018

IEICE Trans. Commun.

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“…To allocate the bandwidth for logical paths between EBCs, the OL2SW-NW has a TS scheduler that collects the traffic information on all logical paths for TSA calculated by a high speed TSA algorithm [13]. Then, the TS scheduler periodically allocates bandwidth at a constant cycle, T , which is an integral multiple of L FR for achieving DBA for large-scale aggregation networks [18]. The TS transmission at the EBC and the WDM/TDM SW are controlled by a TS controller (TSC), which is implemented at each node.…”

Section: Related Workmentioning

confidence: 99%

“…1, the OL2SW-NW acts as a large-scale L2SW. To achieve this, the TS scheduler undertakes MAC learning [18], which is a necessary mechanism to perform as a L2SW. This mechanism is achieved as follows.…”

Section: Overviewmentioning

confidence: 99%

“…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]. OL2SW-NW was designed based on the application of bufferless optical time division multiplexing (TDM) and DBA to achieve a large-scale cost-effective aggregation NW.…”

Section: Introductionmentioning

confidence: 99%

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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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Highly efficient optical aggregation network with network functions virtualization

2018

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Network functions virtualization enables network edge functions to be relocated from dedicated hardware to distributed pools of commodity servers. Metro aggregation networks provide transport between access gateway nodes and such servers accommodating virtual network functions (VNFs). Networks need to be designed to increase the efficiency of network resource usage and reducing network cost as well as energy consumption. However, independently placing VNFs on a server from a physical network design degrades the efficiency of resource usage and causes an increase in network cost. We can avoid such problems by adequately placing each VNF in consideration of the location of access gateway nodes and a network topology. We thus propose a method for designing an optical aggregation network with VNF placement. We successfully formulate the design method as mixed-integer linear programming and demonstrate its effectiveness through intensive mathematical experiments. The experiments showed that the proposed method reduced network cost by up to about 18% while performing almost optimally in terms of server load dispersion.

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Optical Layer 2 Switch Network with Bufferless Optical TDM and Dynamic Bandwidth Allocation

Cited by 9 publications

References 19 publications

Resource Management Architecture of Metro Aggregation Network for IoT Traffic

Resource Management Architecture of Metro Aggregation Network for IoT Traffic

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

Highly efficient optical aggregation network with network functions virtualization

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