Experiment Study of Downstream Traffic Balancing Strategy on 40G Long Reach Coherent PON

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Panke Qin ◽  
Jiawei Wang ◽  
Jingru Wu ◽  
Shangya Han ◽  
Qing Ye
Keyword(s):  
Optical Networks ◽  
Optical Network ◽  
Experimental System ◽  
Passive Optical Network ◽  
Core Network ◽  
Bandwidth Utilization ◽  
Dynamic Traffic ◽  
Device Structure ◽  
Long Distance ◽  
Traffic Balancing

AbstractDistributed high-bandwidth consumption services such as cloud computing require large-capacity, long-distance, and wide-coverage development requirements for Next-Generation Passive Optical Networks (NG-PON2). With the development of NG-PON2 technology, the optical line terminal (OLT) device structure of passive optical network (PON) system is also increasingly complex and heterogeneous. This leads to the problem of network congestion and low bandwidth utilization caused by the unbalanced use of link and port resources in the traditional core network in the PON network. Based on the 40G coherent PON experimental system, this paper studies the traffic balancing problem of OLT equipment, and proposes a dynamic traffic balancing strategy based on real-time monitoring of load sharing and reporting of police and periodic adjustment. The experimental results show that the designed dynamic traffic balancing strategy can effectively reduce the PON network blocking rate and improve bandwidth utilization.

Study on P2P Service Bearer Method for Passive Optical Network for Long Distance and Wide Access

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Yan Wang ◽  
Shangya Han ◽  
Panke Qin ◽  
Yaping Li ◽  
Yanmei Shen
Keyword(s):  
Simulation Analysis ◽  
Optical Network ◽  
Passive Optical Network ◽  
Data Traffic ◽  
Core Network ◽  
Long Distance ◽  
Optical Line Terminal ◽  
Optical Line ◽  
Wide Access ◽  
P2p Service

AbstractFor the effective bearer of P2P-type services, a P2P service bearer reorientation method for passive optical network for long-distance wide access based on P2P protocol message and wire-speed message identification is proposed. However, the reorientation method still has the possibility of relocation failure, so it is modified – that is, an improved P2P service bearer reorientation method based on optical line terminal (OLT) and optical network unit (ONU) cooperation. And the tool NS2 is used for network simulation analysis. Through simulation analysis, it is verified that the modified reorientation method improves the data traffic burden at the core network and at the OLT.

Dynamic Traffic Balancing Strategy Experiment on Optical Line Terminal of 40 G Coherent Passive Optical Network

2015 ◽  
Vol 42 (4) ◽  
pp. 0405007
Author(s):  
秦攀科 Qin Panke ◽  
王立芊 Wang Liqian ◽  
马骏 Ma Jun ◽  
陈雪 Chen Xue ◽  
王磊 Wang Lei
Keyword(s):  
Optical Network ◽  
Passive Optical Network ◽  
Dynamic Traffic ◽  
Optical Line Terminal ◽  
Traffic Balancing ◽  
Optical Line

scholarly journals Passive optical networks and FTTx : technology and solutions

2021 ◽  
Author(s):  
Souheil Kneifati
Keyword(s):  
Optical Networks ◽  
Service Providers ◽  
Optical Network ◽  
Passive Optical Network ◽  
End User ◽  
International Telecommunication Union ◽  
International Telecommunication ◽  
High Bandwidth ◽  
Voice Data

Competition for delivering high-bandwidth "multi-play" services (video, voice, data) is on constant increase. Advanced service delivery requires a higher bandwidth pipe to the end user through passive optical network (PON) technologies. The two major PON standards GPON is an International Telecommunication Union - Telecommunication Standardization Sector (ITU-T) and EPON is a standard developed by the Institute of Electrical and Electronics Engineers (IEEE). This project compares and looks at the choices and challenges service providers face as they bring new PON technology possibilities to their customers and analyze these two standards in terms of their performance, physical properties, implementation and testing requirements. It also discusses the evolution paths for each of the standards and the challenges for such evolution. The final chapter will include the conclusions, some final thoughts, suggestions and recommendations for new projects implementation.

A Survey of Dynamic Bandwidth Assignment Schemes for TDM-Based Passive Optical Network

2020 ◽  
Vol 41 (3) ◽  
pp. 279-293 ◽  
Author(s):  
Rizwan Aslam Butt ◽  
M. Waqar Ashraf ◽  
M Faheem ◽  
Sevia M Idrus
Keyword(s):  
Multiple Access ◽  
Optical Network ◽  
Utilization Efficiency ◽  
Passive Optical Network ◽  
Bandwidth Utilization ◽  
Available Bandwidth ◽  
Dynamic Bandwidth Assignment ◽  
Time Division ◽  
Dynamic Bandwidth ◽  
The Impact

AbstractIn time division, multiple access (TDMA)-based passive optical network (PONs), a dynamic bandwidth assignment (DBA) is necessary for efficient utilization of the available bandwidth of the upstream link. An efficient DBA scheme can improve the upstream performance of a traffic class of an ONU in two ways. First, it can increase the bandwidth assignment to it by efficiently utilizing the available bandwidth. Secondly, it can reduce the channel and frame idle time by increasing the polling frequency and by assigning extra surplus bandwidth not used by the other ONUs. Many DBA schemes have been reported for both ITU PONs (GPON and XGPON) and IEEE PONs (EPON and 10 G EPON). In this study, we explain the impact of DBA scheme on the upstream performance of PON and then do a thorough survey of both PON standards, categorize the DBA schemes and review them critically. Based on the literature review we also give our opinion on the most suitable DBA scheme for both type PONs on the basis of upstream delays, frame loss and bandwidth utilization efficiency.

Broadband NG-PON Networks and Their Designing Using the HPON Network Configurator

2014 ◽  
pp. 277-297 ◽  
Author(s):  
Rastislav Róka
Keyword(s):  
Optical Networks ◽  
Service Providers ◽  
Optical Network ◽  
Software Tool ◽  
Access Networks ◽  
Passive Optical Network ◽  
Passive Optical Networks ◽  
Interactive Software ◽  
Professional Workers ◽  
Basic Characteristics

With the emerging applications and needs of ever increasing bandwidth, it is anticipated that the Next-Generation Passive Optical Network (NG-PON) with much higher bandwidth is a natural path forward to satisfy these demands and for network operators to develop valuable access networks. NG-PON systems present optical access infrastructures to support various applications of many service providers. Therefore, some general requirements for NG-PON networks are characterized and specified. Hybrid Passive Optical Networks (HPON) present a necessary phase of the future transition between PON classes with TDM or WDM multiplexing techniques utilized on the optical transmission medium – the optical fiber. Therefore, some specific requirements for HPON networks are characterized and presented. For developing hybrid passive optical networks, there exist various architectures and directions. They are also specified with emphasis on their basic characteristics and distinctions. Finally, the HPON network configurator as the interactive software tool is introduced in this chapter. Its main aim is helping users, professional workers, network operators and system analysts to design, configure, analyze, and compare various variations of possible hybrid passive optical networks. Some of the executed analysis is presented in detail.

Electrical Spreading Code-Based OFDM Optical Access Networks for Budget Enhancement and Reduced System Bandwidth Requirement

2015 ◽  
Vol 36 (4) ◽  
Author(s):  
Pravindra Kumar ◽  
Anand Srivastava
Keyword(s):  
Optical Networks ◽  
Orthogonal Frequency Division Multiplexing ◽  
High Speed ◽  
Optical Network ◽  
Access Networks ◽  
Passive Optical Network ◽  
Spreading Code ◽  
Optical Access Networks ◽  
Optical Access ◽  
Code Division Multiple

AbstractPassive optical networks based on orthogonal frequency division multiplexing (OFDM-PON) give better performance in high-speed optical access networks. For further improvement in performance, a new architecture of OFDM-PON based on spreading code in electrical domain is proposed and analytically analyzed in this paper. This approach is referred as hybrid multi-carrier code division multiple access-passive optical network (MC-CDMA-PON). Analytical results show that at bit error rate (BER) of 10

An Integrated High-Speed Full Duplex Coherent OFDM-PON and Visible-Light Communication System

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Simarpreet Kaur ◽  
Mahendra Kumar ◽  
Ashu Verma
Keyword(s):  
Visible Light ◽  
Optical Networks ◽  
High Speed ◽  
Light Emitting Diode ◽  
Low Cost ◽  
Dispersion Compensation ◽  
Optical Network ◽  
Visible Light Communication ◽  
Passive Optical Network ◽  
Full Duplex

AbstractWe demonstrated a full duplex hybrid passive optical network and indoor optical wireless system employing coherent optical frequency division multiplexing. To accomplish reliable transmission in passive optical networks integrated visible-light communication (VLC), yellow light-emitting diode and infrared LED is used in downstream and upstream, respectively, for intra building network. In order to support high data rate, pulse-width reduction scheme based on dispersion compensation fiber is incorporated and system successfully covered the distance of 50 km. A data stream at the rate of 30 Gb/s is transmitted for each user out of eight users. VLC-supported users are catered with the bit rate of 1.87 Gb/s over 150 cm and in order to realize a low-cost system, visible and infrared LEDs are used in downlink and uplink, respectively.

Research on Power Optimization Based on Adaptive Passive Optical Networks

2020 ◽  
Vol 0 (0) ◽  
Author(s):  
Li Li ◽  
Li Hong-Jie
Keyword(s):  
Optical Networks ◽  
Optical Network ◽  
Access Network ◽  
Data Rate ◽  
Passive Optical Network ◽  
High Data Rate ◽  
Transmission Power ◽  
High Data ◽  
Maximum Transmission ◽  
Wdm Pon

AbstractFor the commercial wavelength division multiplexing passive optical network (WDM-PON) with standard single-mode fiber SSMF-28 and 1:64 passive fiber branching at its far end (RN) and 100 GHz C-band continuous wavelength (CW) lasers, the maximum coverage and optimal transmission power of STM-16 and STM-64 with external modulators at different speeds and wave numbers (4λ, 8λ and 16λ) are obtained, respectively. The performance parameter of the high data rate WDM-PON system is analyzed with respect to a number of channels and reach. In order to improve the network utilization and receiving efficiency, the influence of different channels and transmission distances on the performance of high data rate WDM-PON system is analyzed. Simulation analysis with Optisystem15.0. The maximum transmission power required to achieve the maximum transmission distance under the condition of nonlinear constraints is obtained. In order to save power consumption, the configuration of each multi-band PON is optimized in terms of transmission power. It is found that WDM-PON system has to compromise between aggregated data rate and system reach. Future software defined access network reconfigure the access network depending on the dynamic demand and the resources available. Hence depending on the distance between the optical line terminal (OLT) and optical network unit (ONU) guaranteed data rate can be estimated. ONU is equipped with a tunable optical filter (TOF) hence future wavelength can be reconfigured by both service provider and user. It makes it possible for software to customize optical access network.

A Decentralized Bandwidth Allocation Scheme for Long-Reach Passive Optical Network

2014 ◽  
Vol 631-632 ◽  
pp. 795-800
Author(s):  
Fang Miao ◽  
Li Feng
Keyword(s):  
Optical Networks ◽  
Bandwidth Allocation ◽  
Optical Network ◽  
Packet Delay ◽  
Propagation Delay ◽  
Passive Optical Network ◽  
Centralized Control ◽  
Allocation Scheme ◽  
Simulation Results ◽  
And Control

This paper proposes an alternative solution for Long-Reach Ethernet passive optical networks. The proposed scheme enables directly communication between ONUs for the transmission of local traffic and control messages, and each ONU calculates bandwidth allocation independently without participation of OLT to remedy the long propagation delay of LR-PON. This scheme also supports centralized control by OLT to change ONUs’ parameters synchronously. Simulation results show that this scheme can effectively reduce the end-to-end packet delay, while maintaining high throughput in uplink channel.

Sign in / Sign up

Export Citation Format

Share Document