Adaptive Scheduling Mechanism with Variable Bit Rate Traffic in EPON

2019 ◽  
Vol 0 (0) ◽  
Author(s):  
Bhargav Ram Rayapati ◽  
Nakkeeran Rangaswamy
Keyword(s):  
Optical Network ◽  
Sleep Time ◽  
Passive Optical Network ◽  
Sleep Mode ◽  
Variable Bit Rate ◽  
Bit Rate ◽  
Cycle Times ◽  
Scheduling Method ◽  
Optical Line ◽  
Adaptive Polling

AbstractIn Ethernet Passive Optical Network, with Load Adaptive Polling Sequence Arrangement (LASA) method, the Optical Line Terminal assigns delayed polling sequence arrangement for a set of Optical Network Units (ONUs) over the cycles. This arrangement has resulted in identical cycle time with Constant Bit Rate traffic. In addition, the LASA through its arrangement provides sleep mode to different set of ONUs over the cycles and provides maximum sleep time for ONUs. With these advantages of LASA and keeping the scenario with different cycle times for the ONUs, in this work, the Variable Bit Rate (VBR) based LASA method is analyzed. The variation in the cycle times has resulted in two cases and in each case by varying the maximum (Mxi) and the minimum (Mni) idle times, a maximum of 40.6% reduction in power consumption is observed in LASA with VBR scheduling method than traditional one.

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.

scholarly journals A novel optical network model for network burden release and congestion reduction based on passive optical network

2018 ◽  
Vol 14 (10) ◽  
pp. 155014771880765
Author(s):  
He Li ◽  
Hongxi Yin ◽  
Shanshan Lin
Keyword(s):  
Data Storage ◽  
Network Structure ◽  
Network Performance ◽  
Optical Network ◽  
Clustering Coefficient ◽  
Passive Optical Network ◽  
Metropolitan Area Networks ◽  
Performance Simulation ◽  
Storage Devices ◽  
Optical Line

In this article, a new optical network structure coping with network congestion is proposed, which is based on passive optical network, and adopts data storage devices coupled with optical line terminal to release network burden. It is shown by our network performance simulation that this network has many merits such as free-scale, fewer connections, larger clustering coefficient, and smaller average shortest path length in comparison to the passive optical network. The novel network structure can replace the far-end service connections with the near-end ones, reduce congestions in an optical network, and, furthermore, relieve traffic burden in optical backbone and metropolitan area networks.

Realization of RIP Module on GPON OLT System

2014 ◽  
Vol 989-994 ◽  
pp. 4962-4965
Author(s):  
Wen Hui Kang ◽  
Xiao Hang Huang ◽  
Shi Cai Zhang ◽  
Xiao Yuan Zhang
Keyword(s):  
Optical Network ◽  
Passive Optical Network ◽  
Network Layer ◽  
Broadband Network ◽  
Ip Routing ◽  
Optical Line

As networks to be flattened, a direction has been put forward clearly by Telecom operators that Optical Line Terminals (OLT) of Gigabit Passive Optical Network (GPON) should become aggregation [1] OLTs, which makes them to work as both aggregation switches and edge access devices. According to this requirement, a scheme that realizes Routing [2] Information Protocol (RIP) on GPON OLT is put forward after deep analysis of GPON system [3] [4] [5] and RIP. Results shows that IP routing on GPON OLT is realized, which allows OLTs to work on the network layer, at the same time simplifies the broadband network levels and increases the reliability of the network.

scholarly journals Passive Optical Network Survivability: Protection, Detection and Restoration

2015 ◽  
Vol 1 (1) ◽  
pp. 128-142
Author(s):  
Huda Saleh Abbas ◽  
Mark A Gregory
Keyword(s):  
Performance Metrics ◽  
Network Reliability ◽  
Optical Network ◽  
Access Network ◽  
Passive Optical Network ◽  
Network Availability ◽  
Restoration Time ◽  
Optical Line ◽  
Fiber Link

Passive optical network (PON) technologies have received increasing attention as demand for fibre access networks has grown. Enhancing fibre access network reliability provides lower operational costs, and improves customer satisfaction. This paper discusses PON survivability including protection schemes for the fiber link and the Optical Line Terminal (OLT), the exciting monitoring techniques of the fiber link, and the effect of reducing the restoration time on the network availability. The main contribution of this study is to provide two protection schemes namely OLT-only-protected and OLT-and-ring protected. The proposed schemes are designed to handle instances of single failure affecting all customers in the network. This work considers three key performance metrics- Failure Impact Robustness (FIR), cost, and availability. The objective of the proposed protection architectures is to guarantee high quality of service at low costs by protecting critical network elements such as OLT and fiber ring. The proposed architectures have been compared with other well-known protection schemes. The results postulate that OLT-and-ring protected approach has 99.993% availability with a 0.09% increase in cost compared to the ring-only protection architecture.

scholarly journals A Study of Secured Enabled Passive Optical Network Enabling RoF

2018 ◽  
Vol 9 (1) ◽  
pp. 43
Author(s):  
M. Deepak
Keyword(s):  
Optical Fiber ◽  
Optical Switch ◽  
Optical Network ◽  
Control Unit ◽  
Passive Optical Network ◽  
Optical Fiber Transmission ◽  
Signal Coordination ◽  
Rf Signals ◽  
Security Control ◽  
Optical Line

<p>Innovation is an incorporation of radio sign in optical fiber transmission inside of system foundations that are thought to be financially savvy, pragmatic and moderately adaptable framework setup for whole deal transport remote signs. This venture proposes a Next era PON construction modeling backings RoF and OFDMA signal coordination without WDM lasers, and exhibit that 10-Gb/s OFDMA and three RF signals at 2.1GHz are transmitted more than 20km SMF in a 32-ONU in both upstream and downstream bearing. A security control unit and an optical switch are utilized associating four Optical Line Terminations (OLTs) with everyone serving just 32 Optical Network Units (ONUs). Insurance control unit gathers data of ONUs served by each OLT, and when an OLT falls flat, it will educate an active OLT to help its unique ONUs together with the burden served by the fizzled OLT.</p>

Performance Analysis of 4×10 Gbps OFDM-PON System Over ROF Link

2019 ◽  
Vol 40 (2) ◽  
pp. 113-117 ◽  
Author(s):  
Anjali Koundal ◽  
Sanjeev Dewra
Keyword(s):  
Quality Factor ◽  
Bit Error Rate ◽  
Error Rate ◽  
Orthogonal Frequency Division Multiplexing ◽  
Optical Network ◽  
Single Mode ◽  
Input Power ◽  
Passive Optical Network ◽  
Laser Source ◽  
Bit Rate

Abstract In this paper, an OFDM-ROF-PON transmission system at bit rate of 4×10 Gbps is proposed and demonstrated. This paper analyzes orthogonal frequency division multiplexing system for radio over fiber in passive optical network at different input powers. A laser source of 193.1 THz is used with single mode fibers of length 400 km and 500 km. A transmission bit rate of 10 Gbits/sec is used to simulate the OFDM-ROF-PON system. The performance of the system has been analyzed with acceptable Quality Factor and Bit Error Rate at low signal input power in the presence of fiber non-linearities. Also the system does not use any amplifiers and the work is done at higher bit rates. It is analyzed that as the input power increases quality factor also increases and bit error rate decreases.

Performance analysis of wavelength division multiplexing MDM-PON system using different advanced modulations

2021 ◽  
Vol 0 (0) ◽  
Author(s):  
Jashanpreet Singh ◽  
Karamjit Kaur
Keyword(s):  
Wavelength Division Multiplexing ◽  
Optical Network ◽  
Passive Optical Network ◽  
Cavity Surface ◽  
Wavelength Division ◽  
Link Distance ◽  
Mode Division Multiplexing ◽  
Vertical Cavity Surface ◽  
Surface Emitting Laser ◽  
Optical Line

Abstract Mode division multiplexing (MDM) is very competent next generation multiplexing technique and is becoming popular among researchers these days. In this research article, an integrated passive optical network (PON) using MDM and wavelength division multiplexing (WDM) is proposed at 25 Gbps over 3 km multimode fiber (MMF) link distance. For MDM, diverse Laguerre–Gaussian (LG) such as LG12, LG15, LG18, LG111 and LG114 are incorporated and also for cost reduction, vertical cavity surface emitting laser (VCSEL) is located in optical line terminal (OLT). Performance of diverse advanced modulations such as compressed spectrum return to zero (CSRZ), duo-binary return to zero (DRZ) and modified duo-binary return to zero (MDRZ) is evaluated and compared with non-return to zero (NRZ) in terms of Bit error rate (BER) at varied MMF link lengths. Results revealed that CSRZ performance stand out and NRZ provide worst performance.

A Novel Scheme for UDWDM-PON Broadband Access Network Using Injection-Locked Phase-to-Intensity Modulation Converter

2019 ◽  
Vol 40 (4) ◽  
pp. 369-377 ◽  
Author(s):  
Meenakshi Chakraborty ◽  
Taraprasad Chattopadhyay
Keyword(s):  
Optical Network ◽  
Access Network ◽  
Cost Effective ◽  
Intensity Modulation ◽  
Passive Optical Network ◽  
Broadband Access ◽  
Wavelength Division ◽  
Wavelength Division Multiplexed ◽  
Optical Line ◽  
Broadband Access Network

Abstract In this paper, we have proposed and analyzed a novel cost-effective ultradense wavelength division multiplexed (UDWDM) passive optical network (PON) which uses phase modulation (PM) of the optical carriers in the optical line terminal (OLT) in order to achieve inherent noise immunity in the network. In the demodulation of the optical PM signal at the optical network unit (ONU), we have proposed to use a simple injection–locked Fabry–Perot (FP) laser diode (LD) for achieving PM to intensity modulation (IM) converter which is followed by a photodiode to recover the specific channel information. A detailed analysis of PM–IM conversion in an injection–locked FPLD has been carried out and the viability of the proposed scheme has been established. The proposed UDWDM–PON which is a broadband access network is cost-effective and long reach.

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