scholarly journals Heavy Traffic Feasible Hybrid Intracycle and Cyclic Sleep for Power Saving in 10G-EPON

2014 ◽  
Vol 2014 ◽  
pp. 1-13
Author(s):  
Xintian Hu ◽  
Liqian Wang ◽  
Zhiguo Zhang ◽  
Xue Chen
Keyword(s):  
Energy Consumption ◽  
Heavy Traffic ◽  
Optical Network ◽  
Power Saving ◽  
Passive Optical Network ◽  
Traffic Load ◽  
Contributing Factors ◽  
Light Traffic ◽  
Gigabit Ethernet ◽  
Qos Guarantee

Energy consumption in optical access networks costs carriers substantial operational expense (OPEX) every year and is one of contributing factors for the global warming. To reduce energy consumption in the 10-gigabit Ethernet passive optical network (10G-EPON), a hybrid intracycle and cyclic sleep mechanism is proposed in this paper. Under heavy traffic load, optical network units (ONUs) can utilize short idle slots within each scheduling cycle to enter intracycle sleep without postponing data transmission. In this way, energy conservation is achieved even under heavy traffic load with quality of service (QoS) guarantee. Under light traffic load, ONUs perform long cyclic sleep for several scheduling cycles. The adoption of cyclic sleep instead of intracycle sleep under light traffic load can reduce unnecessary frequent transitions between sleep and full active work caused by using intracycle sleep. Further, the Markov chain of the proposed mechanism is established. The performances of the proposed mechanism and existing approaches are analyzed quantitatively based on the chain. For the proposed mechanism, power saving ability with QoS guarantee even under heavy traffic and better power saving performance than existing approaches are verified by the quantitative analysis. Moreover, simulations validate the above conclusions based on the chain.

scholarly journals A DEVELOPMENT OF OPTICAL NETWORK UNIT POWER CONSUMPTION MODEL CONSIDERING TRAFFIC LOAD EFFECT

2018 ◽  
Vol 80 (4) ◽  
Author(s):  
Arnidza Ramli ◽  
Nadiatulhuda Zulkifli ◽  
Auwalu Usman ◽  
Sevia Mahdaliza Idrus
Keyword(s):  
Energy Consumption ◽  
Power Consumption ◽  
Optical Network ◽  
Sampling Rate ◽  
Access Network ◽  
Passive Optical Network ◽  
Traffic Load ◽  
Optical Network Unit ◽  
Load Effect ◽  
Consumption Model

Accurate and precise measurement of energy consumption for the deployment of fiber-to-the-home (FTTH) network using Gigabit passive optical network (GPON) is vital to the research community to develop models for the synthesis of energy-efficient protocols and algorithms for the access network. However, lack of power consumption measurement of optical network devices in the past has led to unrealistic and/or oversimplified model being used in simulations. Usually the access network devices are assumed always on and their consumption is both traffic and time independent. Therefore, in this paper we propose an experimentally-driven approach to i) characterize the Optical Network Unit (ONU) from the power consumption standpoint and ii) develop more accurate power consumption model for the ONU. We focus on ONU since it represents the main contributor to the energy consumption of optical access network. The real data in terms of the power consumption and traffic load have been obtained from continuous measurements performed on a GPON network testbed. The measurement is limited to a maximum 100 Mbps data rate due to a limitation in the sampling rate and precision of the measurement device. However, validation has been done with theoretical power consumption model in order to prove the feasibility of the proposed model. Our measurements show that the power consumption of the ONU exhibits a linear dependence on the traffic in which the power consumption at idle mode is 11.51 W while in low power mode the power consumption is around 7.52 W.

CHANNEL MONITORED CHANNEL DUPLEXER FOR OPTIMIZATION OF BIDIRECTIONAL PASSIVE OPTICAL NETWORK

2016 ◽  
Vol 78 (3) ◽  
Author(s):  
Y. Taibin ◽  
Mandela A. A. ◽  
S.M Idrus ◽  
N. Zulkifli
Keyword(s):  
Optical Transmission ◽  
State Of The Art ◽  
Optical Network ◽  
Access Network ◽  
Transmission System ◽  
Passive Optical Network ◽  
Gigabit Ethernet ◽  
Fiber To The Home ◽  
Network Availability ◽  
Network Transmission

Method of optimizing the optical network transmission in access network has been investigated in many years. Unidirectional optical transmission system is the earliest method of delivering the information. In recent years, bidirectional optical transmission system is the most popular network and shall be the first right of refusal to deploy nowadays. It is justify enough by the massive deployment of the popular state-of-the-art network named Passive Optical Network (PON) in Fiber To The Home (FTTH) technologies. Combining 3 wavelengths includes (1) 1310nm, (2) 1490nm, and (3) 1550nm within a fiber is the method used on Gigabit Capable Passive Optical Network (GPON) or Gigabit Ethernet Passive Optical Network (GEPON/EPON). Combining 2 different wavelengths for uplink and downlink on Small Form Pluggable (SFP) lasers also has been a method used to optimized and saved the fiber infrastructure. Compared those techniques, the research optimization focusing on introducing a passive optical duplexer that combined the same wavelength from both end with the element of monitoring via different wavelength to confirm the network availability. In the design, a unidirectional converter able to operate at a nominal 1310nm or 1550nm windows shall be demonstrated up to 10Gbps Ethernet signal.

Comparison and Analysis of ONU Sleep Mechanism Based on OPNET for Green Fiber-Wireless Access Network

2014 ◽  
Vol 700 ◽  
pp. 181-184
Author(s):  
Xu Zhang ◽  
Peng Chao Han ◽  
Yin Peng Yu ◽  
Yu Fang Zhou ◽  
Ya Min Xie
Keyword(s):  
Energy Consumption ◽  
Low Power ◽  
Low Cost ◽  
Optical Network ◽  
Access Network ◽  
High Capacity ◽  
Passive Optical Network ◽  
Sleep State ◽  
Long Distance ◽  
Save Energy

As one of promising "last mile" scheme for broadband access network, Fiber-Wireless (FiWi) access network has the advantages of high capacity, long distance, low cost etc because it is the integration of optical back-end and wireless front-end. At the same time, energy consumption of FiWi access network is an important factor that limits the development of networks. A number of ONU sleep states such as ONU power shedding state, ONU doze state, ONU deep sleep state and ONU fast sleep state have been proposed to obtain low-power ONU state, which indirectly reduce energy consumption of networks. However, these low-power states of ONU are born to coordinate to green Passive Optical Network (PON), of which the function of ONU is different from FiWi. In this paper, two low power ONU sleep mechanisms called Static ONU Sleep (SOS) mechanism and Dynamic ONU Sleep (DOS) mechanism, respectively, are proposed and embedded into FiWi access network. By simulation and analysis based on OPNET 14.5, this paper shows that the DOS mechanism has a better performance than SOS, and both of them can save energy of FiWi access network.

Research of QoS on Upward Dynamic Bandwidth Burst Service in GEPON by Numerical Analysis

2014 ◽  
Vol 35 (4) ◽  
Author(s):  
Li Li ◽  
Hong-An Li ◽  
Tian-Peng Zhang
Keyword(s):  
Optical Network ◽  
Critical Factor ◽  
Passive Optical Network ◽  
Data Traffic ◽  
Practical Application ◽  
Network Efficiency ◽  
Gigabit Ethernet ◽  
Priority Service ◽  
Ethernet Passive Optical Network ◽  
Dynamic Bandwidth

AbstractPerformances of QoS in Gigabit Ethernet passive optical network (GEPON) upward service is the most critical factor for practical application. This article proposes a novel of dual-clocking algorithm basing on studying in the existing dynamic bandwidth. The improved algorithm both guarantees EF high priority service and supports burst BE data traffic, in the meanwhile conspicuously enhances GEPON network efficiency. The article has confirmed the lgorithm feasibility and the improved properties through the simulation.

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