Design Of Passive Optical Networks Research Articles

Design of a passive optical network test scenario

Passive optical networks with gigabit ethernet speeds aim to bring internet and communications technologies using fiber optics to the end user. A test scenario for passive optical networks with gigabit ethernet speeds has been implemented. In this test scenario, practices are carried out from the installation of a manager for the administration, operation and maintenance of the active equipment, to the configuration of different types of services over this technology. Unicast and multicast traffic transport tests have been carried out. This test scenario of passive optical networks with low-cost gigabit ethernet speeds allowed simulations with different topologies and network configurations to be carried out and then transferred to real metropolitan networks. The design of the test scenario has been used to simulate the implementation of new technologies on this type of networks before they are implemented in the commercial networks of an Internet service provider. This test scenario has also been used for training in the design and implementation of passive optical networks with gigabit ethernet capabilities.

Evolutionary Strategy for Practical Design of Passive Optical Networks

Passive optical networks (PONs) are an important and interesting technology for broadband access as a result of the growing demand for bandwidth over the past 10 years. An arduous and complex step in the design of such networks involves determining the placement of equipment, optical fiber cables and several other parameters relevant to the proper functioning of the network. In this paper, we propose an evolutionary strategy to optimize the infrastructure design of PONs by using genetic algorithm technique. This meta-heuristic is capable of elaborating fast, automatic and efficient solutions for the design and planning of PONs. Our proposal has been developed using real maps, aiming to minimize deployment costs and time spent to carry out PON projects, achieving pre-defined quality criteria. We considered, in our simulations, two scenarios (non-dense and dense), four possible topologies and two regions of interest. The non-dense consists of a scenario in which subscribers are distributed in a dispersed manner in the region of interest. The dense has a considerably higher number of subscribers distributed in a very close way to each other. Based on the obtained results, the potential of our proposal is quite clear, as well as its relevance from a technical, economic, and commercial point of view.

Design Passive Optical Network Using Multiclass Classification Neural Network

To require the order of last mile and the increasing demands of high quality of internet, the network architecture of FTTH (Fiber to the Home) has been chosen by numerous ISP (Internet Service Provider). Poor planning does not only increase the infrastructure costs, but it also increases maintenance costs. In this study, the authors focus on the design of passive optical network by using multiclass classification [9] in backpropagation neural network to shorten the FTTH network planning based on passive optical network design to determine final splitter type which refers to the feasibility of QoS (Quality of Service) and Cost Efficiency. Dataset in this study utilizes GIS (Geographic Information System) report with 33 sub-districts in Malang Regency in 2019 data layer. As a result, after 7300 epoch, the accuracy training was 99.99% and the splitter classification accuracy was 98.76%.

Модель программного комплекса поддержки принятия решений по проектированию пассивной оптической сети

Модель программного комплекса поддержки принятия решений по проектированию пассивной оптической сети

An ILP-based CapEx and OpEx efficient multi-stage TDM/TWDM PON design methodology

Abstract With reference to huge investment needed for greenfield passive optical network (PON) deployment, it is immensely important to define procedures and algorithms aimed towards optimal layout and network planning to reduce the overall expenditure due to capital expenditure and operational expenditure as much as possible. We propose an integer linear programming (ILP) based optimization model that explores optimal network dimensioning and placement of network equipment at appropriate locations so as to minimize the overall expenditure. Based on the number of users [optical network units (ONUs)], user’s bandwidth demand, power budget, maximum distance from optical line terminal (OLT) to users, available number of wavelengths and OLT ports, and geographical locations of ONUs, OLT and candidate locations of remote nodes (RNs), the model selects the number, type, splitting ratio and locations of passive devices. The RN device type is selected to be either power splitter or array waveguide grating. Optimal PON architecture is appropriately identified to be time division multiplexing or time-and wavelength division multiplexing (TWDM) depending on the requirement. It provides complete interconnection details among all devices, the overall expenditure, the number of OLT ports and the number and associated data rates of wavelengths to be used. We show exhaustive results for two deployment regions (viz. urban and rural) with different number of ONUs and bandwidth demands from users.We also show result with actual locations of OLT, ONUs and RNs selected from Google map. The proposed ILP model has low computational complexity and offers optimal solution within a reasonable time limit, without requiring a heuristic approach that provides a sub-optimal solution. The TWDM-PON conforms to next-generation PON stage 2 (NG-PON2) specifications and can be used as a useful tool for setting up NG-PON2.

Design of Wireless Passive Optical Communication Network Based On Fusion of Fibre to the Home Architecture

The steady increase in the demand for broadband services and the consequent increase in the volume of generated traffic in our communication networks have motivated the need to implement next generation networks in our territories. Optical Fibre cable is used as media to design long/short network and it supports high bandwidth in Gigabits per second speed. Earlier OFC is used to connect the long distance places and called Optical Transport Network and presently used even in local/Access network called Optical Access Network. In present environment data to be transmitted is so high due to growth in internet. Successful transmission of such a huge bandwidth is big challenging job for long distance network designer. All customers require the QOS and they are interested to make SLA for their service to be obtained from Service provider. ISP should design their network to support the customer requirement suitably otherwise ISP cannot survive in this competitive environment. This paper aims to explain the design and planning of a passive optical network based fiber to the home architecture. The main idea of this paper is to build a fabricated environment that allows us to analyse the depth on FTTx networks and decide which is the most preferable option for this environment. Finally, the simulation software that meets the design requirements will be chosen, the design of passive optical network will be made and the results justify that the network is more viable and can be implemented in a real time.

Gate: greening at the edges

Dramatic data traffic growth, especially wireless data, is driving a significant surge in energy consumption in the last mile access of the telecommunications infrastructure. The growing energy consumption not only escalates the operators' operational expenditures (OPEX) but also leads to a significant rise of carbon footprints. Therefore, enhancing the energy efficiency of broadband access networks is becoming a necessity to bolster social, environmental, and economic sustainability. This article provides an overview on the design and optimization of energy efficient broadband access networks, analyzes the energy efficient design of passive optical networks, discusses the enabling technologies for next generation broadband wireless access networks, and elicits the emerging technologies for enhancing the energy efficiency of the last mile access of the network infrastructure.

A Viable Passive Optical Network Design for Ultrahigh Definition TV Distribution

International Telecommunication Union (ITU) has recently standardized ultrahigh definition television (UHD-TV) with a resolution 16 times more than the current high definition TV. An increase in the efficiency of video source coding or in the capacity of transmission channels will be needed to deliver such programs by passive optical network (PON). In this paper, a high capacity integrated PON infrastructure is proposed to overlay ultrahigh definition television by a complete passive coexistence of 10G-PON (XG-PON) and single carrier directly modulated, duo-binary 40G-PON (XLG-PON) signal. The simulation results show error-free transmission performance and further distribution to 32 optical network units (ONUs) on broadcast basis with negligible power penalty over 20 km of bidirectional standard single mode fiber.

Advances in passive optical networks [Guest Editorial

As an ultimate broadband access solution for future Internet, the passive optical network (PON) brings many advantages such as cost effectiveness, energy savings, service transparency, and signal security over other last-/first-mile technologies. Over the past several years, we have witnessed significant development and deployment of time-division multiple access (TDMA) PONs such as IEEE 802.3ah Ethernet PONs (EPONs) and ITUT G.984 Gigabit PONs (GPONs) to provide high-quality triple-play services for residential users. However, future Internet applications, apart from triple-play service (e.g., peer-to-peer [P2P] social networking, online video sharing, grid computing, and mobile Internet), along with their unique traffic characteristics and huge bandwidth requirements, pose big challenges for current PON design and migration, which in turn are driving legacy TDMA PONs toward ultra-high-speed flexible next-generation PONs such as wavelength-division multiplexed (WDM) PONs and optical orthogonal frequency-division multiplexed (OFDM) PONs, and/or a hybrid WDM/OFDM/ TDM PON.

Ethernet-PON을 위한 새로운 동적 대역 할당 알고리즘

광대역 액세스 망에서 합류, 분배 지점에서의 효율을 고려한 PON(Passive Optical Network)의 설계는 중요한 관심거리가 되고 있다. PON 구조는 매우 간단하지만, 가입자들에서 발생하는 상향 트래픽 제어를 위해서는 매체 접근 제어 프로토콜이 필요하다. 이러한 매체 접근 제어 프로토콜은 트래픽 클래스별 QoS(Quality of Service) 관리 기능, 효율적인 동적 대역 할당(Dynamic Bandwidth Assignment) 기능, CDV(Cell Delay Variation) 최소화 기능 등이 포함되어야 한다. 본 논문에서는 Ethernet-PON(EPON)을 사용하는 광대역 액세스 망에서 여러 트래픽 클래스를 지원하는 매체 접근 제어 프로토콜의 동적 대역 할당 안고리즘을 제시한다. 제안된 알고리즘의 성능 분석을 위해 MDRR 알고리즘과 성능을 비교, 분석하였고, 실험 결과 본 논문에서 제시한 Request-Counter 알고리즘이 보다 더 나은 서비스 품질을 보장받을 수 있음을 확인할 수 있었다. Earlier efforts on optical access concentrated on the design of PONs for the collection and distribution portion of the access network. The PON architecture is very simple but it requires a MAC protocol for control of upstream traffic. The MAC protocol must support QoS (Quality of Service) administration function by various traffic class, efficient dynamic bandwidth assignment function, CDV (Ceil Delay Variation) minimization function etc. This paper proposes a dynamic bandwidth assignment algorithm of the MAC protocol for a broadband access network using an Ethernet Passive Optical Network supporting various traffic class. We compare our proposed with MDRR algorithm using simulation, and confirmed that our proposed Request-Counter algorithm produces shorter average cell delay.

ATM-PON에서의 G.983.1을 이용한 Dynamic MAC Protocol의 설계 및 성능평가

광대역 액세스 망에서 합류, 분배 지점에서의 효율을 고려한 PON(Passive Optical Network)의 설계는 중요한 관심거리가 되고 있다. PON 구조는 매우 간단하지만, 가입자들에서 발생하는 상향 트래픽 제어를 위해서는 매체 접근 제어 프로토콜이 필요하다. 본 논문에서는 여러 트래픽 클래스를 지원하는 ATM-PON을 사용하는 광대역 액세스 망을 위한 매체 접근 제어 프로토콜을 제시한다. 제안된 매체 접근 제어 프로토콜을 위해 G.983.1을 기반으로 하여 grant field 형식과 minislot 형식, 그리고 대역 할당 알고리즘을 제시하였다. 실험 결과 종래의 매체접근제어 프로토콜 보다 더 나은 서비스 품질을 보장받을 수 있음을 확인할 수 있었다. Earlier efforts on optical access concentrated on the design of PONs for the collection and distribution portion of the access network. PON architecture is very simple but it requires MAC protocol for control of upstream traffic. This paper proposes a MAC protocol for a broadband access network using an ATM Passive Optical Network supporting CBR/rtYBR, nrtYBR, UBR and ABR traffic. For the proposed MAC scheme, we present grant field format, minislot format, and bandwidth allocation algorithm. From the simulation result, we have confirmed that our proposed scheme can reduce the average cell delay in comparison to that of conventional MAC schemes.