- An experimental testbed called ADRENALINE is evaluating software-defined optical transmission and SDN/GMPLS networking.
- The testbed includes a programmable OFDM transponder for software-defined optical transmission, a 4-node mesh network with fiber links of varying lengths, and emulation of SDN/OpenFlow and GMPLS control planes.
- Experiments are exploring flexible-grid optical networks using OFDM, all-optical OSNR estimation, and a sliceable bitrate-variable transponder as a building block for future software-defined optical networks.
Cpqd's SDN activities in optical dwdm terabit networksCPqD
CPqD is developing optical SDN technologies including:
1. An optical networking testbed with homemade network elements for research.
2. An optical SDN controller focused on specialized hardware, open interfaces, and network virtualization. The controller supports functions like YANG modeling, virtual optical network instantiation, and control plane with path computation element.
3. A next-generation reconfigurable optical add-drop multiplexer (NG-ROADM) platform being developed using the YANG modeling language. It will support colorless, directionless, and contentionless switching with flexible grid spectrum slots.
4. The development of an SDN convergent network (SDcN) architecture to provide a multilayer
This document provides an overview of LTE-Advanced radio layer 2 and radio resource control aspects. It discusses LTE-Advanced features such as carrier aggregation, coordinated multi-point transmission and reception, emergency calls, positioning, public warning systems, and home eNB. It describes the E-UTRAN architecture and user and control plane protocol stacks. Key aspects covered include system information, connection control, radio resource control states, mobility, radio link failure handling, random access, and scheduling. Performance metrics on uplink and downlink latency and handover interruptions are also mentioned.
OTN has several advantages over SDH/SONET for transporting client signals over long distances and through multiple network domains. OTN uses transparent mapping of client signals and improved forward error correction to increase reach and scalability. It also introduces tandem connection monitoring to improve performance monitoring of signals passing through different network operators. These features make OTN better suited than SDH/SONET for building meshed optical networks.
Why synchronization is not required in otn?MapYourTech
OTN was designed to transparently transport synchronization from payload client signals like SDH. As such, OTN itself does not require internal synchronization. Instead, synchronization is carried within the payload via SDH tributaries. This simplifies the OTN design by avoiding the need for a separate synchronization layer. The OTN frame structure accommodates frequency offsets up to ±65 ppm to maintain synchronization transparency across the network. Modern OTN standards define bit-synchronous and asynchronous mapping procedures to transparently transport synchronization from new client signals.
Still NR Rel.15 was primarily designed for high frequency, high throughput small and mid-range communication systems mostly in dense urban and urban macro environments. In our view, this leaves out a large number of poorly connected populations that live in rural areas without viable solution even for basic broadband communication. We want to address this issue in the NR Rel.17 RAN1 work item on coverage enhancement. Discussion will start tonight in the 3GPP RAN1 e-meeting.
This document discussed open issues regarding coverage in long-distance scenarios. In addition, this document illustrates the baseline coverage performance of extreme long–range rural scenarios for FR1 700 MHz both in DL and UL based on system-level simulations.
This document discusses next-generation reconfigurable optical add-drop multiplexers (NG ROADMs). It outlines the functionality requirements of NG ROADMs, including being colorless, directionless, contentionless, and gridless. It describes the technology building blocks that enable these features, such as wavelength selective switches (WSS). The document also discusses the benefits of NG ROADMs, such as increased flexibility, automatic restoration, and support for higher data rates. It concludes that NG ROADM technology prepares networks to meet current and future traffic needs.
The document discusses modeling a 4G LTE system in MATLAB. It provides an overview of 4G LTE standards and features, and presents a case study of modeling the downlink physical layer of an LTE system in MATLAB. Key aspects covered include channel coding, OFDM, MIMO, link adaptation, and options for simulation acceleration and connecting system design to implementation through code generation.
Cpqd's SDN activities in optical dwdm terabit networksCPqD
CPqD is developing optical SDN technologies including:
1. An optical networking testbed with homemade network elements for research.
2. An optical SDN controller focused on specialized hardware, open interfaces, and network virtualization. The controller supports functions like YANG modeling, virtual optical network instantiation, and control plane with path computation element.
3. A next-generation reconfigurable optical add-drop multiplexer (NG-ROADM) platform being developed using the YANG modeling language. It will support colorless, directionless, and contentionless switching with flexible grid spectrum slots.
4. The development of an SDN convergent network (SDcN) architecture to provide a multilayer
This document provides an overview of LTE-Advanced radio layer 2 and radio resource control aspects. It discusses LTE-Advanced features such as carrier aggregation, coordinated multi-point transmission and reception, emergency calls, positioning, public warning systems, and home eNB. It describes the E-UTRAN architecture and user and control plane protocol stacks. Key aspects covered include system information, connection control, radio resource control states, mobility, radio link failure handling, random access, and scheduling. Performance metrics on uplink and downlink latency and handover interruptions are also mentioned.
OTN has several advantages over SDH/SONET for transporting client signals over long distances and through multiple network domains. OTN uses transparent mapping of client signals and improved forward error correction to increase reach and scalability. It also introduces tandem connection monitoring to improve performance monitoring of signals passing through different network operators. These features make OTN better suited than SDH/SONET for building meshed optical networks.
Why synchronization is not required in otn?MapYourTech
OTN was designed to transparently transport synchronization from payload client signals like SDH. As such, OTN itself does not require internal synchronization. Instead, synchronization is carried within the payload via SDH tributaries. This simplifies the OTN design by avoiding the need for a separate synchronization layer. The OTN frame structure accommodates frequency offsets up to ±65 ppm to maintain synchronization transparency across the network. Modern OTN standards define bit-synchronous and asynchronous mapping procedures to transparently transport synchronization from new client signals.
Still NR Rel.15 was primarily designed for high frequency, high throughput small and mid-range communication systems mostly in dense urban and urban macro environments. In our view, this leaves out a large number of poorly connected populations that live in rural areas without viable solution even for basic broadband communication. We want to address this issue in the NR Rel.17 RAN1 work item on coverage enhancement. Discussion will start tonight in the 3GPP RAN1 e-meeting.
This document discussed open issues regarding coverage in long-distance scenarios. In addition, this document illustrates the baseline coverage performance of extreme long–range rural scenarios for FR1 700 MHz both in DL and UL based on system-level simulations.
This document discusses next-generation reconfigurable optical add-drop multiplexers (NG ROADMs). It outlines the functionality requirements of NG ROADMs, including being colorless, directionless, contentionless, and gridless. It describes the technology building blocks that enable these features, such as wavelength selective switches (WSS). The document also discusses the benefits of NG ROADMs, such as increased flexibility, automatic restoration, and support for higher data rates. It concludes that NG ROADM technology prepares networks to meet current and future traffic needs.
The document discusses modeling a 4G LTE system in MATLAB. It provides an overview of 4G LTE standards and features, and presents a case study of modeling the downlink physical layer of an LTE system in MATLAB. Key aspects covered include channel coding, OFDM, MIMO, link adaptation, and options for simulation acceleration and connecting system design to implementation through code generation.
This document discusses next generation optical transport networks (OTN). It begins with an introduction to OTN switching and available options, including fixed and reconfigurable optical add-drop multiplexers with and without automatically switched optical network/generalized multi-protocol label switching control planes and OTN switching. It then discusses three capital expenditure components and recommends evaluating solutions based on total cost of ownership. The document concludes with recommending several options to consider and background on the author.
This document provides an overview and roadmap for achieving broadband optical access of 10Gb/s everywhere. It discusses:
1) The TSB Photonics21-NGOIA project which aims to identify promising approaches to achieving ubiquitous 10Gb/s access.
2) A paradigm shift in optical networking towards more flexible, dynamically reconfigurable networks to improve energy efficiency.
3) The concept of an "ultimate" optical network architecture with a common infrastructure across access, metro and backbone networks to maximize statistical multiplexing gains and reduce costs.
4) Several candidate technologies for next-generation optical access such as long-reach PON, WDM-PON and hybrid TDM/W
Flexible optical networking with spectral or spatial super-channelsCPqD
The document discusses spectrally flexible optical networking and the activities of the EU FOX-C project. FOX-C aims to develop technologies for flexible transponders, switching nodes, and networking studies to demonstrate the benefits of flexible optical networks. Key developments include spectrally flexible super-channel transceivers, nodes for all-optical add/drop of sub-channels, and studies showing the optimal sub-channel grid size is 12.5 GHz. Techno-economic analyses show the FOX-C solution can provide significant network-wide capital expenditure savings compared to legacy fixed-grid networks.
VLSI Architecture for Cyclostationary Feature Detection Based Spectrum Sensin...IRJET Journal
This document proposes a VLSI architecture for cyclostationary feature detection for spectrum sensing in cognitive radio networks. It aims to transform the cyclostationary detection algorithm into an application-specific integrated circuit (ASIC) design. The key aspects covered include:
1. System level design of the cyclostationary detection algorithm and architectures for internal blocks like autocorrelation, FFT, MAC, frequency selection and test statistics computation.
2. Performance analysis of the detector in additive white Gaussian noise, achieving 0.95 probability of detection at -6dB SNR.
3. FPGA implementation and verification against simulation, with 0.07 absolute error.
4. ASIC synthesis in 90nm CMOS technology, occupying 23
ROADM Technologies for Flexible - Tbitsec Optical NetworksCPqD
This document discusses technologies for flexible, high-capacity optical networks, including ROADMs. It describes how ROADMs are used to manage traffic through optical network intersections. It then summarizes technologies like coherent Nyquist filtering, superchannels, flexible grid WSS, hybrid Raman-EDFA amplifiers, and multi-port flexgrid optical channel monitors that enable increased network capacity, reduced costs, and transparent wavelength management for 400Gb/s and 1Tb/s transmission. These improved ROADM subsystems will enable more future-proof ROADM architectures.
1) A Tier 1 mobile network operator conducted a field trial of a passive centralized-RAN (C-RAN) architecture to evaluate performance, costs, and challenges.
2) Initial fiber inspection using EXFO's probe found most connectors were dirty, increasing optical loss. After cleaning, optical time domain reflectometry characterized the fiber span and found a missing connection.
3) Using real-time OTDR and a visual fault locator, technicians identified and corrected the missing connection and mislabeled fiber within the span. Characterization then verified the full fiber path with reduced optical losses.
Amplification, ROADM and Optical Networking activities at CPqDCPqD
The document summarizes the amplification, ROADM, and optical networking activities at CPqD. It discusses the development of an automated amplifier characterizer, work on transient response issues in cascaded ROADMs, and dual-optimization algorithms for adaptive EDFA gain control and global WSS equalization. It also outlines collaboration with UTD on efficient numerical modeling of EDFA output power and network-wide signal power control strategies.
Cross Phase Modulation (XPM) Reduction in Hybrid Systems with 100G QPSK and 1...ADVA
Check out this slide set that outlines the research ADVA Optical Networking's Steven Searcy and Sorin Tibuleac have been doing. They have successfully demonstrated how we can improve the performance of a DWDM system operating with mixed 10G and 100G wavelengths.
This is presentation by Keysight technologies on 5G NR Dynamic Spectrum Sharing. Very well articulated presentation as always by Keysight. Details on the 3GPP support for NR DSS implementation in LTE bands in Rel 15 and Rel 16.
The document discusses network transport evolution at a telecommunications provider. It covers trends like increasing packet traffic, the benefits of coherent detection in DWDM networks, and strategies for deploying 100G channels. It also debates the relative merits of using OTN switching versus router-based switching in the network backbone for efficiency and fast restoration, noting challenges of each approach. Maintaining support for legacy interfaces is also discussed.
LTE-Advanced is an evolution of LTE that aims to meet or exceed the requirements for 4G networks set by the ITU. It is being developed by 3GPP and will utilize wider bandwidths through carrier aggregation and advanced antenna technologies to achieve higher data rates and spectral efficiency than LTE. The specifications are targeted to be frozen by March 2011, with the first deployments expected in the years following completion of LTE specifications and testing.
This document provides an overview of the LTE radio layer 2, radio resource control (RRC), and radio access network architecture. It discusses the E-UTRAN architecture including eNodeBs, home eNodeBs, and relays. It describes the user plane including bearer services, the user plane protocol stack with PDCP, RLC, and MAC layers, and security and transport functions. It also outlines the control plane including connection control and RRC states, and highlights features like interoperability, self-organizing networks, positioning, broadcasting, latency evaluations, and LTE-Advanced.
The document summarizes radio frequency aspects of 3GPP Release 10 LTE-Advanced technology. Key points discussed include expanded channel bandwidth up to 100MHz enabled by carrier aggregation, operating bands beyond initial LTE bands, deployment scenarios, and considerations for UE and base station transmissions and receptions to support wider channel widths through multiple component carriers. Feasibility studies are needed to establish radio transmission and reception specifications as well as radio resource management for LTE-Advanced.
The document outlines the course content for an LTE and 5G networking course. It covers 9 sections on topics related to wireless technologies, modulation and multiple access schemes, an introduction to LTE including architecture and protocols. It also covers NAS, RRC, PDCP, RLC, and MAC protocols. Section 9 discusses CS procedures and section 10 provides an overview of 5G NR including standards, architecture, protocols and frequency bands. The final section discusses practical protocol testing tools and methods.
This document provides an overview of LTE technology including:
- The evolution of 3G UMTS networks and the motivation for developing LTE standards.
- Key requirements for LTE such as higher data rates, improved spectrum efficiency, and reduced latency.
- An overview of LTE release versions and their major features such as OFDMA, SC-FDMA, E-UTRAN architecture.
- LTE frequency bands and the expansion of spectrum for 3GPP standards.
- How LTE-Advanced builds upon LTE to meet IMT-Advanced specifications including carrier aggregation and advanced MIMO.
This document summarizes Joseph Kim's presentation on STMicroelectronics' Advanced System Technology research group and their work on next-generation optical access network architectures. The presentation introduced ST's SUCCESS project, which aims to develop a hybrid WDM/TDM passive optical network with a ring topology that provides backward compatibility and a smooth migration path from current TDM-PON networks. Key aspects of SUCCESS include flexible remote nodes using thin-film tunable filters and splitters, cost-effective ONUs using optical bursts instead of local light sources, and an integrated OLT leveraging tunable laser sources to support both TDM and WDM networks.
To meet customers' requirements for high-quality networks, LTE trial networks must be optimized during and after project implementation. Radio frequency (RF) optimization is necessary in the entire optimization process. This document provides guidelines on network optimization for network planning and optimization personnel.
1) 5G NR standardization and deployments are progressing with non-standalone deployments in 2017-2019 and standalone expected in 2020.
2) 5G NR introduces improvements like flexible numerology, scalable transmission time interval, and self-contained subframes to enable low latency communications.
3) Beamforming and massive MIMO techniques along with hybrid beamforming architectures help support high bandwidth and capacity requirements of 5G networks.
In this paper, ZTE proposes a new converged optical and wireless network architecture and topology by applying orthogonal frequency division multiplexing (OFDM) PON technology. OFDM PON is able to simultaneously support residential, business, and mobile backhaul/fronthaul services by meeting the requirements of both time delay sensitive and non-sensitive services. ZTE argues that OFDM PON is the most suitable solution for future converged optical and wireless networks because it allows different types of services to be seamlessly supported in one system architecture using multiple transmission channels. ZTE also presents a 40Gbps OFDM PON prototype to prove the system feasibility and availability.
Implications of super channels on CDC ROADM architecturesAnuj Malik
OFC 2014 Presentation
This study proposes CDC ROADM architecture compatible with emerging DWDM super-channel technology. A real world network model is used to quantify that this architecture requires fewer network components leading to less capital and operational costs.
Sensing of Spectrum for SC-FDMA Signals in Cognitive Radio NetworksIRJET Journal
The document proposes a technique for detecting spectrum used by interleaved single-carrier frequency-division multiple access (SC-FDMA) signals in cognitive radio networks. A metric is defined based on cyclostationary features to identify if subcarriers allocated to primary users are available for secondary users. The Neyman-Pearson test is used to examine two hypotheses (H0 and H1) representing the absence and presence of primary users. Simulation results show the proposed method outperforms existing techniques like autocorrelation of cyclic prefix and energy detection, with lower complexity but similar detection performance at low signal-to-noise ratios. The performance is evaluated under various conditions like number of users, pilot signals, window length, and block length
Improved routing scheme with ACO in WSN in comparison to DSDVijsrd.com
Routing is the process of selecting best paths in a network in terms of energy and distance. In adhoc it is critical to collect the information in an efficient manner as it has limitations in terms of centralized congestion. In such case to perform the effective communication there is the requirement of some such routing approach that can provide the routing with optimized path. In this work, ACO based routing approach is defined to generate the optimized path in comparison to DSDV over the network. The presented approach is implemented in matlab environment and obtained results shows the effective results in terms of optimized path.
This document discusses next generation optical transport networks (OTN). It begins with an introduction to OTN switching and available options, including fixed and reconfigurable optical add-drop multiplexers with and without automatically switched optical network/generalized multi-protocol label switching control planes and OTN switching. It then discusses three capital expenditure components and recommends evaluating solutions based on total cost of ownership. The document concludes with recommending several options to consider and background on the author.
This document provides an overview and roadmap for achieving broadband optical access of 10Gb/s everywhere. It discusses:
1) The TSB Photonics21-NGOIA project which aims to identify promising approaches to achieving ubiquitous 10Gb/s access.
2) A paradigm shift in optical networking towards more flexible, dynamically reconfigurable networks to improve energy efficiency.
3) The concept of an "ultimate" optical network architecture with a common infrastructure across access, metro and backbone networks to maximize statistical multiplexing gains and reduce costs.
4) Several candidate technologies for next-generation optical access such as long-reach PON, WDM-PON and hybrid TDM/W
Flexible optical networking with spectral or spatial super-channelsCPqD
The document discusses spectrally flexible optical networking and the activities of the EU FOX-C project. FOX-C aims to develop technologies for flexible transponders, switching nodes, and networking studies to demonstrate the benefits of flexible optical networks. Key developments include spectrally flexible super-channel transceivers, nodes for all-optical add/drop of sub-channels, and studies showing the optimal sub-channel grid size is 12.5 GHz. Techno-economic analyses show the FOX-C solution can provide significant network-wide capital expenditure savings compared to legacy fixed-grid networks.
VLSI Architecture for Cyclostationary Feature Detection Based Spectrum Sensin...IRJET Journal
This document proposes a VLSI architecture for cyclostationary feature detection for spectrum sensing in cognitive radio networks. It aims to transform the cyclostationary detection algorithm into an application-specific integrated circuit (ASIC) design. The key aspects covered include:
1. System level design of the cyclostationary detection algorithm and architectures for internal blocks like autocorrelation, FFT, MAC, frequency selection and test statistics computation.
2. Performance analysis of the detector in additive white Gaussian noise, achieving 0.95 probability of detection at -6dB SNR.
3. FPGA implementation and verification against simulation, with 0.07 absolute error.
4. ASIC synthesis in 90nm CMOS technology, occupying 23
ROADM Technologies for Flexible - Tbitsec Optical NetworksCPqD
This document discusses technologies for flexible, high-capacity optical networks, including ROADMs. It describes how ROADMs are used to manage traffic through optical network intersections. It then summarizes technologies like coherent Nyquist filtering, superchannels, flexible grid WSS, hybrid Raman-EDFA amplifiers, and multi-port flexgrid optical channel monitors that enable increased network capacity, reduced costs, and transparent wavelength management for 400Gb/s and 1Tb/s transmission. These improved ROADM subsystems will enable more future-proof ROADM architectures.
1) A Tier 1 mobile network operator conducted a field trial of a passive centralized-RAN (C-RAN) architecture to evaluate performance, costs, and challenges.
2) Initial fiber inspection using EXFO's probe found most connectors were dirty, increasing optical loss. After cleaning, optical time domain reflectometry characterized the fiber span and found a missing connection.
3) Using real-time OTDR and a visual fault locator, technicians identified and corrected the missing connection and mislabeled fiber within the span. Characterization then verified the full fiber path with reduced optical losses.
Amplification, ROADM and Optical Networking activities at CPqDCPqD
The document summarizes the amplification, ROADM, and optical networking activities at CPqD. It discusses the development of an automated amplifier characterizer, work on transient response issues in cascaded ROADMs, and dual-optimization algorithms for adaptive EDFA gain control and global WSS equalization. It also outlines collaboration with UTD on efficient numerical modeling of EDFA output power and network-wide signal power control strategies.
Cross Phase Modulation (XPM) Reduction in Hybrid Systems with 100G QPSK and 1...ADVA
Check out this slide set that outlines the research ADVA Optical Networking's Steven Searcy and Sorin Tibuleac have been doing. They have successfully demonstrated how we can improve the performance of a DWDM system operating with mixed 10G and 100G wavelengths.
This is presentation by Keysight technologies on 5G NR Dynamic Spectrum Sharing. Very well articulated presentation as always by Keysight. Details on the 3GPP support for NR DSS implementation in LTE bands in Rel 15 and Rel 16.
The document discusses network transport evolution at a telecommunications provider. It covers trends like increasing packet traffic, the benefits of coherent detection in DWDM networks, and strategies for deploying 100G channels. It also debates the relative merits of using OTN switching versus router-based switching in the network backbone for efficiency and fast restoration, noting challenges of each approach. Maintaining support for legacy interfaces is also discussed.
LTE-Advanced is an evolution of LTE that aims to meet or exceed the requirements for 4G networks set by the ITU. It is being developed by 3GPP and will utilize wider bandwidths through carrier aggregation and advanced antenna technologies to achieve higher data rates and spectral efficiency than LTE. The specifications are targeted to be frozen by March 2011, with the first deployments expected in the years following completion of LTE specifications and testing.
This document provides an overview of the LTE radio layer 2, radio resource control (RRC), and radio access network architecture. It discusses the E-UTRAN architecture including eNodeBs, home eNodeBs, and relays. It describes the user plane including bearer services, the user plane protocol stack with PDCP, RLC, and MAC layers, and security and transport functions. It also outlines the control plane including connection control and RRC states, and highlights features like interoperability, self-organizing networks, positioning, broadcasting, latency evaluations, and LTE-Advanced.
The document summarizes radio frequency aspects of 3GPP Release 10 LTE-Advanced technology. Key points discussed include expanded channel bandwidth up to 100MHz enabled by carrier aggregation, operating bands beyond initial LTE bands, deployment scenarios, and considerations for UE and base station transmissions and receptions to support wider channel widths through multiple component carriers. Feasibility studies are needed to establish radio transmission and reception specifications as well as radio resource management for LTE-Advanced.
The document outlines the course content for an LTE and 5G networking course. It covers 9 sections on topics related to wireless technologies, modulation and multiple access schemes, an introduction to LTE including architecture and protocols. It also covers NAS, RRC, PDCP, RLC, and MAC protocols. Section 9 discusses CS procedures and section 10 provides an overview of 5G NR including standards, architecture, protocols and frequency bands. The final section discusses practical protocol testing tools and methods.
This document provides an overview of LTE technology including:
- The evolution of 3G UMTS networks and the motivation for developing LTE standards.
- Key requirements for LTE such as higher data rates, improved spectrum efficiency, and reduced latency.
- An overview of LTE release versions and their major features such as OFDMA, SC-FDMA, E-UTRAN architecture.
- LTE frequency bands and the expansion of spectrum for 3GPP standards.
- How LTE-Advanced builds upon LTE to meet IMT-Advanced specifications including carrier aggregation and advanced MIMO.
This document summarizes Joseph Kim's presentation on STMicroelectronics' Advanced System Technology research group and their work on next-generation optical access network architectures. The presentation introduced ST's SUCCESS project, which aims to develop a hybrid WDM/TDM passive optical network with a ring topology that provides backward compatibility and a smooth migration path from current TDM-PON networks. Key aspects of SUCCESS include flexible remote nodes using thin-film tunable filters and splitters, cost-effective ONUs using optical bursts instead of local light sources, and an integrated OLT leveraging tunable laser sources to support both TDM and WDM networks.
To meet customers' requirements for high-quality networks, LTE trial networks must be optimized during and after project implementation. Radio frequency (RF) optimization is necessary in the entire optimization process. This document provides guidelines on network optimization for network planning and optimization personnel.
1) 5G NR standardization and deployments are progressing with non-standalone deployments in 2017-2019 and standalone expected in 2020.
2) 5G NR introduces improvements like flexible numerology, scalable transmission time interval, and self-contained subframes to enable low latency communications.
3) Beamforming and massive MIMO techniques along with hybrid beamforming architectures help support high bandwidth and capacity requirements of 5G networks.
In this paper, ZTE proposes a new converged optical and wireless network architecture and topology by applying orthogonal frequency division multiplexing (OFDM) PON technology. OFDM PON is able to simultaneously support residential, business, and mobile backhaul/fronthaul services by meeting the requirements of both time delay sensitive and non-sensitive services. ZTE argues that OFDM PON is the most suitable solution for future converged optical and wireless networks because it allows different types of services to be seamlessly supported in one system architecture using multiple transmission channels. ZTE also presents a 40Gbps OFDM PON prototype to prove the system feasibility and availability.
Implications of super channels on CDC ROADM architecturesAnuj Malik
OFC 2014 Presentation
This study proposes CDC ROADM architecture compatible with emerging DWDM super-channel technology. A real world network model is used to quantify that this architecture requires fewer network components leading to less capital and operational costs.
Sensing of Spectrum for SC-FDMA Signals in Cognitive Radio NetworksIRJET Journal
The document proposes a technique for detecting spectrum used by interleaved single-carrier frequency-division multiple access (SC-FDMA) signals in cognitive radio networks. A metric is defined based on cyclostationary features to identify if subcarriers allocated to primary users are available for secondary users. The Neyman-Pearson test is used to examine two hypotheses (H0 and H1) representing the absence and presence of primary users. Simulation results show the proposed method outperforms existing techniques like autocorrelation of cyclic prefix and energy detection, with lower complexity but similar detection performance at low signal-to-noise ratios. The performance is evaluated under various conditions like number of users, pilot signals, window length, and block length
Improved routing scheme with ACO in WSN in comparison to DSDVijsrd.com
Routing is the process of selecting best paths in a network in terms of energy and distance. In adhoc it is critical to collect the information in an efficient manner as it has limitations in terms of centralized congestion. In such case to perform the effective communication there is the requirement of some such routing approach that can provide the routing with optimized path. In this work, ACO based routing approach is defined to generate the optimized path in comparison to DSDV over the network. The presented approach is implemented in matlab environment and obtained results shows the effective results in terms of optimized path.
This document compares the performance of the 6th derivative Gaussian UWB pulse shape to the 2nd derivative Gaussian pulse shape in an IEEE 802.15.3a multipath fading channel using different types of RAKE receivers in the presence of multiple-user interference and Gaussian noise. It finds that both the pulse shape used and the number of RAKE fingers impact the signal-to-noise ratio and bit error rate performance in the channel model. Specifically, it concludes that the 6th derivative pulse is more suitable for meeting FCC power regulations and achieving better BER performance since higher derivatives increase the peak emission frequency while decreasing signal bandwidth.
Dynamic bandwidth allocation scheme in lr pon with performance modelling and ...IJCNCJournal
We consider models of telecommunication systems that incorporate probability, dense real-time and data.
We present a new formal abstraction method for computing minimum and maximum reachability
probabilities for such models. Our approach uses strictly local formal abstract steps to reduce both the size
of abstract specifications generated and the complexity of operations needed, in comparison to previous
approaches of this kind. A selection of large case studies are implemented the techniques and evaluate,
which include some infinite-state probabilistic real time models, demonstrating improvements over existing
tools in several cases. The capacity of metro and access networks are extended the reach and split ratio of
the conventional Long - Reach Passive Optical Networks (LR-PONs). The efficient solutions of LR-PONs
are appeared in feeder distances around 100km and high split ratios up to 1000-way . Among many
existing approaches, one of the most effective options to improve network performance in LR-PONs are the
multi-thread based dynamic bandwidth allocation (DBA) scheme where several bandwidth allocation
processes are performed in parallel is considered. Without proper intercommunication between the
overlapped threads, multi-thread DBA may lose efficiency and even perform worse than the conventional
single thread algorithm. Real Time Probabilistic Systems are used to evaluate a typical PON systems
performance. This approach is more convenient, flexible, and lower cost than the former simulation method,
which do not need develop special hardware and software tools. Moreover, how changes in performance
depend on changes in the particular modes can be easily analysis by supplying ranges for parameter values.
The proposed algorithm with traditional DBA is compared, and shows its advantage on average packet
delay. The key parameters of the algorithm are analysed and optimized, such as initiating and tuning
multiple threads, inter -thread scheduling, and fairness among users. The algorithms advantage in
numerical results are decreased the average packet delay and improve network throughput under varying
offered loads.
This document analyzes the performance of adaptive subcarrier allocation in coherent optical OFDM systems. It proposes two allocation schemes: proportional allocation and equal allocation. Proportional allocation aims to maximize data rate while ensuring fairness among users by assigning subcarriers to the user with the highest SNR for that subcarrier, as long as it does not exceed their proportional share. Equal allocation simply divides subcarriers equally among all users. The document models an optical OFDM system transmitting over 1000km of single-mode fiber and investigates how adaptive subcarrier allocation can improve performance compared to static allocation schemes.
This document outlines a study on implementing a hybrid routing protocol for wireless sensor networks. It discusses the problems with purely proactive or reactive routing protocols and the motivation for a hybrid approach. The document outlines the objectives to implement OLSR and AODV protocols, design a framework to allow them to work together, and test their performance. Preliminary results show the individual protocols working correctly in simulation. The future work involves combining the protocols in the framework and further evaluating the hybrid protocol's performance and efficiency.
A SEMI BLIND CHANNEL ESTIMATION METHOD BASED ON HYBRID NEURAL NETWORKS FOR UP...ijwmn
The paper describes how to improve channel estimation in Single Carrier Frequency Division Multiple
Access (SC-FDMA) system, using a Hybrid Artificial Neural Networks (HANN). The 3rd Generation
Partnership Project (3GPP) standards for uplink Long Term Evolution Advanced (LTE-A) uses pilot based
channel estimation technique. This kind of channel estimation method suffers from a considerable loss
ofbitrate due to pilot insertion; all data frame sent contains reference signal. The HANN converts data
aided channel estimator to semi blind channel estimator. To increase convergence speed, HANN uses some
channel propagation Fuzzy Rules to initialize Neural Network parameters before learning instead of a
random initialization, so its learning phase ismore rapidly compared to classic ANN.HANN allows more
bandwidth efficient and less complexity. Simulation results show that HANN has better computational
efficiency than the Minimum Mean Square Error (MMSE) estimator and has faster convergence than
classic Neural Networks estimators.
Implementation of 8x8 MIMO OFDM systems for higher order modulation using QOS...ijsrd.com
A general Quasi orthogonal space time block code (QOSTBC) structure is proposed for multiple-input multiple-output-orthogonal frequency division multiplexing (MIMO-OFDM) systems for 8 X 8 antenna configuration. The signal detection technology used in this work for MIMO-OFDM system is Zero-Forcing Equalization (linear detection technique). In this paper, analysis of high level of modulations (i.e. M-QAM and M-PSK for different values of M) on MIMO-OFDM system is presented. In this, AWGN, Rayleigh and Rician channels have been used for analysis purpose and their effect on BER and Spectral Efficiency for high data rates have been presented. The proposed system has better performance than the other systems in terms of SNR improvement of 3-5 dB and spectral efficiency.
This document discusses cyclostationary feature detection for spectrum sensing in cognitive radio using various modulation schemes. It presents the block diagrams for cyclostationary feature detection without and with modulation. It simulates the detection using BPSK, QPSK, and 8-PSK modulation and analyzes the output cyclic spectral correlation function. The main results are that BPSK produces one primary and one secondary peak, QPSK produces one primary and two secondary peaks, and 8-PSK produces one primary and four secondary peaks in the output, allowing identification of the modulation scheme used.
IGeekS Technologies is a company located in Bangalore, India. We have being recognized as a quality provider of hardware and software solutions for the student’s in order carry out their academic Projects. We offer academic projects at various academic levels ranging from graduates to masters (Diploma, BCA, BE, M. Tech, MCA, M. Sc (CS/IT)). As a part of the development training, we offer Projects in Embedded Systems & Software to the Engineering College students in all major disciplines.
EFFICIENCY ENHANCEMENT BASED ON ALLOCATING BIZARRE PEAKSijwmn
A new work has been proposed in this paper in order to overcome one of the main drawbacks that found in
the Orthogonal Frequency Division Multiplex (OFDM) systems, namely Peak to Average Power Ratio
(PAPR). Furthermore, this work will be compared with a previously published work that uses the neural
network (NN) as a solution to remedy this deficiency.
The proposed work could be considered as a special averaging technique (SAT), which consists of wavelet
transformation in its first stage, a globally statistical adaptive detecting algorithm as a second stage; and
in the third stage it replaces the affected peaks by making use of moving average filter process. In the NN
work, the learning process makes use of a previously published work that is based on three linear coding
techniques.
In order to check the proposed work validity, a MATLAB simulation has been run and has two main
variables to compare with; namely BER and CCDF curves. This is true under the same bandwidth
occupancy and channel characteristics. Two types of tested data have been used; randomly generated data
and a practical data that have been extracted from a funded project entitled by ECEM. From the achieved
simulation results, the work that is based on SAT shows promising results in reducing the PAPR effect
reached up to 80% over the work in the literature and our previously published work. This means that this
work gives an extra reduction up to 15% of our previously published work. However, this achievement will
be under the cost of complexity. This penalty could be optimized by imposing the NN to the SAT work in
order to enhance the wireless systems performance.
EFFICIENCY ENHANCEMENT BASED ON ALLOCATING BIZARRE PEAKSijwmn
A new work has been proposed in this paper in order to overcome one of the main drawbacks that found in
the Orthogonal Frequency Division Multiplex (OFDM) systems, namely Peak to Average Power Ratio
(PAPR). Furthermore, this work will be compared with a previously published work that uses the neural
network (NN) as a solution to remedy this deficiency.
The proposed work could be considered as a special averaging technique (SAT), which consists of wavelet
transformation in its first stage, a globally statistical adaptive detecting algorithm as a second stage; and
in the third stage it replaces the affected peaks by making use of moving average filter process. In the NN
work, the learning process makes use of a previously published work that is based on three linear coding
techniques.
In order to check the proposed work validity, a MATLAB simulation has been run and has two main
variables to compare with; namely BER and CCDF curves. This is true under the same bandwidth
occupancy and channel characteristics. Two types of tested data have been used; randomly generated data
and a practical data that have been extracted from a funded project entitled by ECEM. From the achieved
simulation results, the work that is based on SAT shows promising results in reducing the PAPR effect
reached up to 80% over the work in the literature and our previously published work. This means that this
work gives an extra reduction up to 15% of our previously published work. However, this achievement will
be under the cost of complexity. This penalty could be optimized by imposing the NN to the SAT work in
order to enhance the wireless systems performance. Orthogonal Frequency Division Multiplexing
Technologies for future mobile transport networksITU
This presentation presents several technologies for future mobile transport networks using the seamless convergence of fiber and wireless access networks. We first present a flexible and efficient mobile fronthaul system for ultra-dense small cells using a convergence of fiber and millimeter-wave systems. We then present a simple and low cost optical system for simultaneous transmission of multiple heterogeneous wireless signals, such as multi-RATs, operators, mobile signals and fronthaul/backhaul signals, using subcarrier multiplexing intermediate frequency over fiber system and efficient data mapping and de-mapping algorithms. Finally, we present an efficient solution to provide high-speed communications to high-speed trains using a seamless convergence of wavelength-division multiplexing radio-over-fiber and linearly located linear cell systems.
Author : Pham Tien Dat, NICT Japan
Presented at ITU-T Focus Group IMT-2020 Workshop and Demo Day, 7 December 2016.
More details on the event : http://www.itu.int/en/ITU-T/Workshops-and-Seminars/201612/Pages/Programme.aspx
Iaetsd stbc-ofdm downlink baseband receiver for mobile wmanIaetsd Iaetsd
This document discusses a proposed space time block code-orthogonal frequency division multiplexing (STBC-OFDM) downlink baseband receiver for mobile wireless metropolitan area networks (WMANs). The proposed receiver applies STBC-OFDM techniques using two transmit antennas and one receive antenna to provide robust performance in outdoor mobile environments. It includes a simple and robust synchronizer and an accurate but affordable channel estimator to overcome challenges of multipath fading channels. Simulation results show the receiver can achieve a coded bit error rate of less than 10-6 for 16QAM modulation under vehicle speeds of 120 km/hr while supporting up to 27.32 Mb/s of uncoded data transmission. The receiver designed in a 90-nm CMOS
A Summative Comparison of Blind Channel Estimation Techniques for Orthogonal ...IJECEIAES
1. The document reviews various techniques for blind channel estimation in orthogonal frequency division multiplexing (OFDM) systems, including subspace-based, iterative, maximum likelihood, and cyclostationarity-based approaches.
2. It compares the performance of blind, semi-blind, and trained channel estimators in terms of speed of convergence and complexity.
3. The review finds that deterministic techniques like maximum likelihood converge faster but have higher complexity than statistical techniques, and that semi-blind estimators can achieve better performance than blind or trained estimators in some scenarios.
Performance evaluation of VLC system using new modulation approachjournalBEEI
This document evaluates the performance of a new modulation scheme called catenated-OFDM for visible light communications (VLC) systems. Catenated-OFDM involves transmitting multiple OFDM signals simultaneously over different optical bands. The proposed system is simulated using Optisys software. Results show the system can achieve transmission distances of up to 12 meters for 2 dBm input power with 3 optical bands and a data rate of 10 Gbps. Higher data rates, up to 15 Gbps, are also possible. Increasing the number of optical bands or decreasing the data rate improves the receiver sensitivity. The catenated-OFDM approach shows potential for high-speed optical wireless communications.
This document presents a method for suppressing sidelobes in OFDM-based cognitive radio using a modified adaptive symbol transition technique with genetic algorithm. It discusses how OFDM signals suffer from high sidelobes causing interference, and how the adaptive symbol transition method can efficiently suppress sidelobes by adding an extension to each symbol. However, the algorithm for adaptive symbol transition is complex to implement. Therefore, the document proposes using a genetic algorithm to optimize the value of the extension added in the adaptive symbol transition method. Simulation results show the proposed genetic algorithm approach reduces interference power by around 20dB compared to the normal method, improving performance for the primary user.
This document evaluates and compares the performance of GFDM and OFDM waveforms in an LTE-A system level study. It finds that GFDM can achieve around 6dB reduction in out-of-band radiation compared to OFDM. BER, PER and throughput are similar between the two waveforms in different channel conditions. GFDM's out-of-band radiation can be reduced further using techniques like guard symbols or windowing. The document concludes that GFDM is a promising candidate for 5G waveforms.
This document outlines the objectives, outcomes, modules, textbook, and experiments for the course ECE4001 Digital Communication Systems.
The course objectives are to interpret various digital modulation techniques, analyze line coding techniques, and understand the role of baseband and spread spectrum transmission.
The course outcomes include comprehending sampling and quantization, applying knowledge of signal theory to modulation techniques, characterizing line codes, designing pulses for interference-free transmission, and describing digital modulation and spread spectrum systems.
The course consists of 8 modules covering topics such as sampling, quantization, pulse code modulation, line codes, baseband systems, bandpass modulation, spread spectrum, and contemporary issues. Evaluation includes assignments, quizzes,
Similar to An experimental overview on software defined optical transmission and sdngmpls networking activities in the adrenaline testbed (20)
Control Plane for High Capacity Networks PublicCPqD
This document discusses network programmability and SDN for transport networks. It motivates network programmability to allow dynamic network adaptation, faster service delivery, and integration of NFV. It describes SDN for transport networks including a multilayer SDN orchestration approach to automate provisioning across domains. It also summarizes Telefonica's activities applying SDN to transport networks through trials and proofs-of-concept including a multi-vendor OFC 2016 demo.
Brazilian Semiconductor Scenario and Opportuni3esCPqD
The document discusses the Brazilian semiconductor scenario and opportunities. It outlines the main actors in the Brazilian semiconductor ecosystem, including universities and research institutes involved in fabrication and IC design. It also discusses IC design houses, semiconductor fabs, government support programs, and value chain service providers. The universities play a key role in R&D for silicon and III-V semiconductor materials and processes as well as IC and photonic design. There are also several IC design houses and some front-end and back-end semiconductor fabs in Brazil.
Cognitive Technique for Software Defined Optical Network (SDON)CPqD
This document discusses cognitive techniques for software defined optical networks (SDONs). It proposes using a fuzzy C-means (FCM) cognitive algorithm to determine modulation formats for high-speed transponders based on quality of transmission requirements. The FCM algorithm is compared to a case-based reasoning approach. Simulation results show the FCM approach has over two orders of magnitude faster computation time while achieving 100% accurate classification. This demonstrates FCM is a promising cognitive technique for SDON control planes to enable fast, autonomous decision making.
This document discusses the rise of Industry 4.0, also known as the fourth industrial revolution. It describes the three previous industrial revolutions from the 18th century to today and how they advanced manufacturing. Industry 4.0 is characterized by connectivity between smart machines and systems using sensors and data exchange. This will allow autonomous decision making and optimization of production processes. The document highlights opportunities for Industry 4.0 in various sectors like agriculture, mining, transportation and more. It emphasizes that the rise of the Internet of Things will connect billions of devices generating huge amounts of data. Finally, it argues that advanced design and EDA tools will be crucial to enable the complex systems needed for Industry 4.0.
The document discusses options for prototyping new physical layers for telecommunication systems using digital signal processing. It focuses on using DSP processors and FPGAs, as ASICs are not available. Examples are provided of prototypes that maximize the capabilities of available hardware. Specifically, a DSP processor was chosen as the platform for developing a discrete multi-tone transceiver, and FPGAs were used for real-time transmitter processing through techniques like parallel fractional sampling rate conversion. The document concludes that "platform FPGAs" have been important for research due to price and reconfigurability, though skilled developers are needed to explore parallelism for high bit rate implementations.
Troubleshooting Coherent Optical Communication SystemsCPqD
1) The document discusses troubleshooting of coherent optical communication systems. It covers topics such as market trends driving higher data rates, challenges in coherent measurements, and typical tests and impairments in coherent transmission systems.
2) The document outlines techniques used to maximize transmission capacity within the physical layer, including higher order modulation formats, time-domain pulse shaping, and polarization division multiplexing. It also discusses requirements for test instruments to test these advanced modulation schemes.
3) The presentation provides an overview of using arbitrary waveform generators to emulate optical distortions in the electrical domain, allowing for deterministic and precise testing with complex impairments like phase noise and polarization mode dispersion.
The document discusses trends and challenges in optical communications and networking. It notes that while fiber capacity experiments have reached 100 terabits per second, the theoretical fiber limit is around 200 terabits per second due to nonlinear effects. It also discusses limitations of CMOS processors and the need for future communication technologies to meet demands for increased capacity, reduced cost per bit, higher energy efficiency, and smaller sizes to enable applications such as medical diagnosis and the Internet of Things. Integrated photonics, electronics, advanced optical subsystems, transmission and reception techniques, and agile optical networks are promising technologies for addressing these challenges that the WTON workshop aims to discuss.
Integrated Photonics Advances in Optical Transmission: An Industry ViewCPqD
BrPhotonics is a photonics company that develops integrated optical components for high-speed data transmission. It has a cleanroom facility for manufacturing electro-optic polymer modulators and packaging. The company is working on technologies like thin film polymer modulators, photonic packaging, tunable lasers, and silicon photonics chips to enable high-speed transceivers. It recently completed a second round of funding and now has CPqD, GigPeak, and FINEP as shareholders. BrPhotonics aims to reduce costs and power consumption while increasing port density through miniaturization.
This document discusses EMBRAPII, a Brazilian innovation agency that promotes technological development through partnerships between companies and research institutions. EMBRAPII provides non-refundable grants to fund projects carried out jointly by companies and research units that have expertise in areas aligned with companies' technological needs. The research units have dedicated resources and infrastructure to help resolve companies' technological challenges, with a focus on intellectual property agreements, lower costs, and management flexibility. EMBRAPII projects span various industries and the document provides statistics on the number and types of projects funded and their financial resources.
CPqD at Optical Communication Ecosystem - Last/Next 10 years and R&D&I opport...CPqD
The document discusses opportunities in optical communications research and development over the next 10 years at CPqD. It outlines CPqD's history in optical communications R&D from 1976 to the present. It then discusses technological developments over the last 10 years, including transmission rates, coherent DSP algorithms, and WDM systems. Finally, it proposes a roadmap for the next 10 years focusing on hardware, algorithms, networks, silicon photonics, and integrated photonics opportunities. Areas of focus include fiber technologies, amplifiers, spatial division multiplexing, coherent transceivers, DSP, modulation formats, network optimization, and packaging.
This document summarizes research presented at an optical technologies workshop on flexible optical transmission. It describes work done by CPqD, a Brazilian optical technologies company, on developing components and systems for 100G, 200G, and 400G optical transmission over long-haul, metro, and data center interconnect distances. This includes polymer-based transmitters for 100G and 200G coherent modules, spectrally-sliced receivers to enable 400G transmission, and achieving transmission distances of over 1500km for 400G using these techniques.
This document outlines an agenda for a presentation on high capacity optical access networks. It discusses the growing demand for access network capacity driven by factors like increased mobile data usage and number of connected devices. It then covers various technologies being researched to increase access network capacity, such as coherent ultra-dense WDM passive optical networks (Coherent UDWDM PONs) that can provide terabit capacities. Specific areas of research discussed include mitigating crosstalk in high capacity PONs, using real-time coherent receivers, and integrating photonic integrated circuits. Field trials of digital coherent UDWDM PON systems are also summarized.
O documento descreve os instrumentos de apoio à inovação oferecidos pelo BNDES ao longo dos anos, como financiamentos, capital de risco e participação acionária. O BNDES apoia setores estratégicos como TICs e microeletrônica para estimular a competitividade brasileira. Há vários programas e linhas de crédito direcionados a empresas de diferentes portes, com foco em fomentar a inovação no país.
O documento discute a Internet das Coisas e a necessidade de infraestrutura para conectar dispositivos. Ele também descreve ações do governo brasileiro para promover a comunicação M2M/IoT, como a criação da Câmara de Gestão M2M e planos para ampliar a banda larga e incentivar setores estratégicos.
Mesa Redonda: Fomento Governamental para o SetorCPqD
O documento discute oportunidades e desafios para o setor de microeletrônica no Brasil com foco na Internet das Coisas. Ele destaca tecnologias como RFID que habilitam a IoT e a potencial para crescimento. Também apresenta iniciativas governamentais de incentivo à pesquisa, desenvolvimento e inovação incluindo leis, programas de financiamento e proteção da propriedade intelectual. Finalmente, descreve embriões do ecossistema brasileiro de microeletrônica como empresas de fabricação, encapsulamento, projet
Creating Business Value By Enabling the Internet of ThingsCPqD
The document discusses the Internet of Things (IoT) and how connecting products to the Internet can create business value. It defines the IoT as sensors and devices that collect data and share it over the Internet without requiring human interaction. The document recommends that companies analyze where IoT technologies could help products, monitor assets, provide real-time analytics, enable remote maintenance, and lead to outcomes-based services to create value for customers. It also discusses various IoT technologies and strategies for getting started with small IoT deployments.
This document discusses how RFID and NFC technologies can provide connectivity for the Internet of Things (IoT) over short distances. It outlines CISC Semiconductor's role in developing RFID and NFC standards through organizations like ISO, EPCglobal, and NFC Forum. The document also describes the importance of conformance, performance, and interoperability testing to ensure different RFID and NFC devices can reliably communicate and interact as required.
Apresentação Paulo Curado (CPqD) - RFID Journal Live! Brasil 2015CPqD
O documento descreve o CPqD, o maior centro de pesquisa e desenvolvimento da América Latina para tecnologias da informação e comunicação. O CPqD possui mais de 1.200 funcionários, 460 patentes nacionais e 254 internacionais registradas, e 1.216 softwares registrados. O documento também descreve o Laboratório de Estudos e Aplicações em RFID do CPqD, que realiza certificações, inovações sob encomenda e consultorias relacionadas à tecnologia RFID.
Fiber Technology Trends for Next Generation NetworksCPqD
This document summarizes Christopher Towery's presentation on optical networking technologies towards achieving terabit per second capacities. The presentation discusses recent experiments that have extended transmission distances and capacities. It also covers topics like quasi-single mode fibers, submarine network evolution, extending terrestrial networks through challenging terrain, and extending reach in legacy networks. Experimental results are presented to demonstrate technologies for high capacity transmission over long distances.
Emerging Trends and Applications for Cost Effective ROADMsCPqD
The document discusses emerging trends and applications for reconfigurable optical add-drop multiplexers (ROADMs) and wavelength selective switches (WSS). It notes that higher port count WSS are the fastest growing area to support applications like data centers, wireless backhaul, and utilities networks. The document summarizes the evolution of ROADM technology over generations from 1998 to present. It then outlines various ROADM architectures including multi-degree colorless and directionless designs using dual WSS or high port count WSS. These emerging technologies allow more flexible and efficient optical networking to support bandwidths from 10G to 400G and beyond for 5G, SDN/NFV applications and network virtualization.
LF Energy Webinar: Carbon Data Specifications: Mechanisms to Improve Data Acc...DanBrown980551
This LF Energy webinar took place June 20, 2024. It featured:
-Alex Thornton, LF Energy
-Hallie Cramer, Google
-Daniel Roesler, UtilityAPI
-Henry Richardson, WattTime
In response to the urgency and scale required to effectively address climate change, open source solutions offer significant potential for driving innovation and progress. Currently, there is a growing demand for standardization and interoperability in energy data and modeling. Open source standards and specifications within the energy sector can also alleviate challenges associated with data fragmentation, transparency, and accessibility. At the same time, it is crucial to consider privacy and security concerns throughout the development of open source platforms.
This webinar will delve into the motivations behind establishing LF Energy’s Carbon Data Specification Consortium. It will provide an overview of the draft specifications and the ongoing progress made by the respective working groups.
Three primary specifications will be discussed:
-Discovery and client registration, emphasizing transparent processes and secure and private access
-Customer data, centering around customer tariffs, bills, energy usage, and full consumption disclosure
-Power systems data, focusing on grid data, inclusive of transmission and distribution networks, generation, intergrid power flows, and market settlement data
The Department of Veteran Affairs (VA) invited Taylor Paschal, Knowledge & Information Management Consultant at Enterprise Knowledge, to speak at a Knowledge Management Lunch and Learn hosted on June 12, 2024. All Office of Administration staff were invited to attend and received professional development credit for participating in the voluntary event.
The objectives of the Lunch and Learn presentation were to:
- Review what KM ‘is’ and ‘isn’t’
- Understand the value of KM and the benefits of engaging
- Define and reflect on your “what’s in it for me?”
- Share actionable ways you can participate in Knowledge - - Capture & Transfer
MySQL InnoDB Storage Engine: Deep Dive - MydbopsMydbops
This presentation, titled "MySQL - InnoDB" and delivered by Mayank Prasad at the Mydbops Open Source Database Meetup 16 on June 8th, 2024, covers dynamic configuration of REDO logs and instant ADD/DROP columns in InnoDB.
This presentation dives deep into the world of InnoDB, exploring two ground-breaking features introduced in MySQL 8.0:
• Dynamic Configuration of REDO Logs: Enhance your database's performance and flexibility with on-the-fly adjustments to REDO log capacity. Unleash the power of the snake metaphor to visualize how InnoDB manages REDO log files.
• Instant ADD/DROP Columns: Say goodbye to costly table rebuilds! This presentation unveils how InnoDB now enables seamless addition and removal of columns without compromising data integrity or incurring downtime.
Key Learnings:
• Grasp the concept of REDO logs and their significance in InnoDB's transaction management.
• Discover the advantages of dynamic REDO log configuration and how to leverage it for optimal performance.
• Understand the inner workings of instant ADD/DROP columns and their impact on database operations.
• Gain valuable insights into the row versioning mechanism that empowers instant column modifications.
"$10 thousand per minute of downtime: architecture, queues, streaming and fin...Fwdays
Direct losses from downtime in 1 minute = $5-$10 thousand dollars. Reputation is priceless.
As part of the talk, we will consider the architectural strategies necessary for the development of highly loaded fintech solutions. We will focus on using queues and streaming to efficiently work and manage large amounts of data in real-time and to minimize latency.
We will focus special attention on the architectural patterns used in the design of the fintech system, microservices and event-driven architecture, which ensure scalability, fault tolerance, and consistency of the entire system.
Conversational agents, or chatbots, are increasingly used to access all sorts of services using natural language. While open-domain chatbots - like ChatGPT - can converse on any topic, task-oriented chatbots - the focus of this paper - are designed for specific tasks, like booking a flight, obtaining customer support, or setting an appointment. Like any other software, task-oriented chatbots need to be properly tested, usually by defining and executing test scenarios (i.e., sequences of user-chatbot interactions). However, there is currently a lack of methods to quantify the completeness and strength of such test scenarios, which can lead to low-quality tests, and hence to buggy chatbots.
To fill this gap, we propose adapting mutation testing (MuT) for task-oriented chatbots. To this end, we introduce a set of mutation operators that emulate faults in chatbot designs, an architecture that enables MuT on chatbots built using heterogeneous technologies, and a practical realisation as an Eclipse plugin. Moreover, we evaluate the applicability, effectiveness and efficiency of our approach on open-source chatbots, with promising results.
Getting the Most Out of ScyllaDB Monitoring: ShareChat's TipsScyllaDB
ScyllaDB monitoring provides a lot of useful information. But sometimes it’s not easy to find the root of the problem if something is wrong or even estimate the remaining capacity by the load on the cluster. This talk shares our team's practical tips on: 1) How to find the root of the problem by metrics if ScyllaDB is slow 2) How to interpret the load and plan capacity for the future 3) Compaction strategies and how to choose the right one 4) Important metrics which aren’t available in the default monitoring setup.
"NATO Hackathon Winner: AI-Powered Drug Search", Taras KlobaFwdays
This is a session that details how PostgreSQL's features and Azure AI Services can be effectively used to significantly enhance the search functionality in any application.
In this session, we'll share insights on how we used PostgreSQL to facilitate precise searches across multiple fields in our mobile application. The techniques include using LIKE and ILIKE operators and integrating a trigram-based search to handle potential misspellings, thereby increasing the search accuracy.
We'll also discuss how the azure_ai extension on PostgreSQL databases in Azure and Azure AI Services were utilized to create vectors from user input, a feature beneficial when users wish to find specific items based on text prompts. While our application's case study involves a drug search, the techniques and principles shared in this session can be adapted to improve search functionality in a wide range of applications. Join us to learn how PostgreSQL and Azure AI can be harnessed to enhance your application's search capability.
[OReilly Superstream] Occupy the Space: A grassroots guide to engineering (an...Jason Yip
The typical problem in product engineering is not bad strategy, so much as “no strategy”. This leads to confusion, lack of motivation, and incoherent action. The next time you look for a strategy and find an empty space, instead of waiting for it to be filled, I will show you how to fill it in yourself. If you’re wrong, it forces a correction. If you’re right, it helps create focus. I’ll share how I’ve approached this in the past, both what works and lessons for what didn’t work so well.
Must Know Postgres Extension for DBA and Developer during MigrationMydbops
Mydbops Opensource Database Meetup 16
Topic: Must-Know PostgreSQL Extensions for Developers and DBAs During Migration
Speaker: Deepak Mahto, Founder of DataCloudGaze Consulting
Date & Time: 8th June | 10 AM - 1 PM IST
Venue: Bangalore International Centre, Bangalore
Abstract: Discover how PostgreSQL extensions can be your secret weapon! This talk explores how key extensions enhance database capabilities and streamline the migration process for users moving from other relational databases like Oracle.
Key Takeaways:
* Learn about crucial extensions like oracle_fdw, pgtt, and pg_audit that ease migration complexities.
* Gain valuable strategies for implementing these extensions in PostgreSQL to achieve license freedom.
* Discover how these key extensions can empower both developers and DBAs during the migration process.
* Don't miss this chance to gain practical knowledge from an industry expert and stay updated on the latest open-source database trends.
Mydbops Managed Services specializes in taking the pain out of database management while optimizing performance. Since 2015, we have been providing top-notch support and assistance for the top three open-source databases: MySQL, MongoDB, and PostgreSQL.
Our team offers a wide range of services, including assistance, support, consulting, 24/7 operations, and expertise in all relevant technologies. We help organizations improve their database's performance, scalability, efficiency, and availability.
Contact us: info@mydbops.com
Visit: https://www.mydbops.com/
Follow us on LinkedIn: https://in.linkedin.com/company/mydbops
For more details and updates, please follow up the below links.
Meetup Page : https://www.meetup.com/mydbops-databa...
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Lee Barnes - Path to Becoming an Effective Test Automation Engineer.pdfleebarnesutopia
So… you want to become a Test Automation Engineer (or hire and develop one)? While there’s quite a bit of information available about important technical and tool skills to master, there’s not enough discussion around the path to becoming an effective Test Automation Engineer that knows how to add VALUE. In my experience this had led to a proliferation of engineers who are proficient with tools and building frameworks but have skill and knowledge gaps, especially in software testing, that reduce the value they deliver with test automation.
In this talk, Lee will share his lessons learned from over 30 years of working with, and mentoring, hundreds of Test Automation Engineers. Whether you’re looking to get started in test automation or just want to improve your trade, this talk will give you a solid foundation and roadmap for ensuring your test automation efforts continuously add value. This talk is equally valuable for both aspiring Test Automation Engineers and those managing them! All attendees will take away a set of key foundational knowledge and a high-level learning path for leveling up test automation skills and ensuring they add value to their organizations.
"Scaling RAG Applications to serve millions of users", Kevin GoedeckeFwdays
How we managed to grow and scale a RAG application from zero to thousands of users in 7 months. Lessons from technical challenges around managing high load for LLMs, RAGs and Vector databases.
"What does it really mean for your system to be available, or how to define w...Fwdays
We will talk about system monitoring from a few different angles. We will start by covering the basics, then discuss SLOs, how to define them, and why understanding the business well is crucial for success in this exercise.
QA or the Highway - Component Testing: Bridging the gap between frontend appl...zjhamm304
These are the slides for the presentation, "Component Testing: Bridging the gap between frontend applications" that was presented at QA or the Highway 2024 in Columbus, OH by Zachary Hamm.
Northern Engraving | Nameplate Manufacturing Process - 2024Northern Engraving
Manufacturing custom quality metal nameplates and badges involves several standard operations. Processes include sheet prep, lithography, screening, coating, punch press and inspection. All decoration is completed in the flat sheet with adhesive and tooling operations following. The possibilities for creating unique durable nameplates are endless. How will you create your brand identity? We can help!
Northern Engraving | Nameplate Manufacturing Process - 2024
An experimental overview on software defined optical transmission and sdngmpls networking activities in the adrenaline testbed
1. An experimental overview on software-
defined optical transmission and SDN/GMPLS
networking activities in the ADRENALINE
testbed
Raul Muñoz, Ramon Casellas, Michela Svaluto, Ricardo Martínez, Josep M.
Fàbrega, Ricard Vilalta, Fco. Javier Vílchez,
Centre Tecnològic de Telecomunicacions de Catalunya (CTTC) - Spain
III WTON, May 28-29th, 2014, Campinas, Brazil
2. III WTON, May 28-29th 2014, Campinas (Brazil)
•Programmable OFDM-based rate/bandwidth variable transponder for software-defined
optical transmission supporting adaptive bit/power loading and PAPR reduction techniques
•Off-line digital signal processing (DSP) using Matlab code
•Digital (SW) / analog (HW) RF mixing available
•IM (DSB transmission)
•Linear field modulation (SSB)
•IQ modulation
•Phase modulation (CE-OFDM)
•Direct detection (DD) and coherent OFDM (CO-OFDM)
•4-nodes mesh network with two optical cross-connects (OXCs) and two reconfigurable
add-drop multiplexers (ROADMs) connected with amplified links of 35km, 50km, and 150km.
ADRENALINE Testbed®:
Optical OFDM experimental platform
ADC
Optical
Modulator
(MZM/PM/IQ)
Off-lineprocessing
(MATLAB)
DACDAC
Q
ADC
Oscillo-
scope
I
AWG
TLS
Optical
Detection
(DD/CO)
Tx DSP
Rx DSP
Off-lineprocessing
(MATLAB)
Photonic Mesh Network (ADRENALINE testbed)
OXC-2
ROADM-2
OXC-1
ROADM-1
150km
35km
3. III WTON, May 28-29th 2014, Campinas (Brazil)
DAC
PIN
Rx DSPADC
MATLAB
TLS
AWG
MATLABDPO
MZM
BVTx @ BRAS BVRx @ ROADM
Fiber link VOA
TIA
Photonic Mesh Network (ADRENALINE testbed*)
OXC-1
ROADM-1
OXC-2
ROADM-2
150km
35kmTx DSP
B2B sensitivity performance (num vs exp)
Testbed experiments
Mod. format Bit rate Bsignal Bopt
BPSK (4QAM) 5Gb/s 5GHz 11GHz
4PAM (16QAM) 10Gb/s 5GHz 11GHz
4PAM (16QAM) 8Gb/s 4GHz 9GHz
BL: BPSK/4PAM
(40%/60%)
8Gb/s 5GHz 11GHz
[1] M. Svaluto, J. M. Fabrega, F. J. Vilchez, L. Nadal, V. López, G. Junyent, Experimental Validation of an Elastic Low-Complex OFDM-Based BVT for Flexi-Grid
Metro Networks , in Proc. ECOC 2013, paper We.1.E.5
Bit/Power loading BVT for flexgrid MAN
4. III WTON, May 28-29th 2014, Campinas (Brazil)
All-optical OSNR estimation of Optical OFDM signals
Joint work with Universidad de Zaragoza and
Aragón Photonics
OFDM subcarrier monitoring by means of high-res
optical spectrum analysis
Preliminary results:
The guard band and spectral gaps are used for
estimation of OSNR in 0.1 nm
Measured ASE: -31.21 dBm
Est. OSNR 23.50 dB
Est. ASE -30.72 dBm
Est. OSNR 22.20 dB
Est. ASE -30.18 dBm
Est. OSNR 22.09 dB
Est. ASE -29.36 dBm
[2] J. M. Fabrega, P. Sevillano, M. Svaluto, J. J. Martínez, A. Villafranca, J. M. Subías, «All-Optical In-Band OSNR Measurement in Intensity-Modulated
Direct-Detection Optical OFDM Systems» , in Proc. ICTON 2013, paper Mo.D1.5
5. III WTON, May 28-29th 2014, Campinas (Brazil)
λ1 λ1
Sliceable BVT
[1] M. Svaluto, et al. «Experimental Validation of an Elastic Low-Complex OFDM-Based BVT for Flexi-Grid Metro Networks,» in proc. ECOC 2013, paper We.1.E.5
[3] R. Muñoz, et al. “Dynamic Differential Delay Aware RMSA for Elastic Multi-path Provisioning in GMPLS Flexi-grid DWDM Networks,” in proc. OFC 2014, paper W3.A.2
[4] J. M. Fabrega et al. “Experimental Demonstration of Elastic Optical Networking using Time-Sliceable Bitrate Variable OFDM Transceiver,” in proc. OFC 2014, paper Tu2.G.8
node-1
node-N
Optical
Mod.
DACDSP
λ2
λ3
BVRx
BVRx
λ1-λm
λN
TLS
TLS
DACDSP
Optical
Mod.
Optical
Network
Aggregator
(coupler/mux)
...
λ1 λ1λ2
node-2
BVRx
Optical
Mod.
DACDSP
TLS
λ3
λ3 λNλ1 λ2
Time/Frequency S-BVTx
. . .
λ1
λ1
λ2
λ2
λ1
λ1
λ2
λ2
OFDM BVT as building block for future S-BVT [1][3-4]:
Array of BVTs with tunable laser sources
Each subTx with variable capacity and sub-wavelength granularity
Possibility of time/wavelength switching at source node
Multi-band/Multi-flow OFDM with optical aggregator/distributor
• Sliceable BVT (S-BVT): set of virtual transponders able to generate a flow of great
capacity, which can be suitably sliced as multiple flows towards different nodes
• Advanced BVT functionality: aggregated flow @ source node time and frequency
sliceable in multiple flows directed towards different destinations
6. III WTON, May 28-29th 2014, Campinas (Brazil)
ADRENALINE Testbed®:
IT and Network orchestration
6
WSON/SSON
VM 1
VM 2
VM N
Host 1
OVS
…
OFC PCE
Active
Stateful PCE
OpenFlow-controlled
Ethernet/MPLS
Switches
OpenFlow
VM 1
VM 2
VM N
Host 2
OVS
…
Datacenter 1
Virtual IT
resources
Network
Orchestration
OFS
OFS
OFS
VM 1
VM 2
VM N
Host 3
OVS
…
OFC
OpenFlow-controlled
Ethernet/MPLS
Switches
OpenFlow
VM 1
VM 2
VM N
Host 4
OVS
…
Datacenter 2
OFS
OFS
OFS
SDN IT and Network orchestration (SINO)
OFC
BGP-
LS
7. III WTON, May 28-29th 2014, Campinas (Brazil)
ADRENALINE Testbed®:
GMPLS/SDN Control plane emulator
7
74 Commodity Servers to emulate
SDN, OpenFlow and GMPLS/PCE
Control plane architectures for different
transport technologies
INTERNET
Disk Server
(NFS)
IPSec
Gateway
Testbed
Controller
Web-server
(Drupal/
Apache)
Development
server
Remote Testbed
operation and
experimentation
External
Control Plane
Interconnection
ADRENALINE Network Configurator
(ADNETCONF)
ADRENALINE Network Traffic Generator
(ADNETGEN)
Ethernet Switches
CTTC
Testbed Operation
Center
(TOC)
GMPLS
Controller
Active
Stateful
PCE
Stateless
PCE
OpenFlow
Controller
OpenFlow
Agent
SDN
Orchestra
tor
8. III WTON, May 28-29th 2014, Campinas (Brazil)
GMPLS control plane with stateless PCE for flexi-grid
DWDM networks
8
Adaptive
NMS PCE
Network
State
TED
PathComp
LSP
Setup /Reroute/ Release
Request
GMPLS
Controller
TED LSPDB
GMPLS
Controller
TED LSPDB
GMPLS
Controller
TED LSPDB
PCEP
TED Sync.
PCEP
OSPF-TE, RSVP-TE
and LMP
Provisioning Interface
IGP/BGP-LS Participation,
Out-of-band synch, etc.
• LSP Setup/Reroute/Release
• Network state dissemination
• Neighbor discovery and Link
property correlation
• Path computation services (new
connections, re-optimization,
restoration)
LSPDB
9. III WTON, May 28-29th 2014, Campinas (Brazil)
Experimental assessment of a combined PCE-RMA and
distributed spectrum allocation mechanism for GMPLS
Elastic CO-OFDM Optical Networks
Phase I: static network paths characterization (network planning):
K-shortest paths for each pair of distinct source-destination nodes N (N-1) K paths.
Classify them according to their distance/length and hop count, reducing the set to a number of
canonical cases simulated Coherent O-OFDM (CO-OFDM) transmission
Phase II: PCE-based on demand path computation:
Dynamic path computation based on a CSP algorithm using
No resource information (i.e., unconstrained)
Aggregated per TE link information (i.e. unreserved spectrum )
Detailed per TE link information (i.e., status of the nominal central frequencies)
Path computation can apply either a conservative optical spectrum estimation (worst-case modulation)
or an iterative estimation (path computation is repeated with less efficient modulations)
Perform table lookup (Phase I), obtain feasible combinations of normalized data rate, modulation format
(4-QAM OFDM, 16-QAM OFDM), Symbol Rate, FEC, required spectrum and sub-carriers.
A new ERO sub-oject named RMSA has been defined, which conveys the PCE assigned optical
parameters (modulation, FEC, and spectrum).
Proposal of preliminary pre-standard GMPLS signalling and routing protocol extensions for flexi-grid
optical networks.
9
• Ramon Casellas, et al.,, IEEE JSAC, Vol. 31, No 1, Pages 49-61, January 2013.
• R. Casellas, et al., IEEE/OSA JOCN , Vol. 4, Issue 10, pp. B1-B10, November 2012.
200
400
600
800
1000
1200
1
2
3
4
5
0
5
10
15
20
25
30
35
Distance (km)
Hop Count
OpticalSpectrumwidth(GHz)
OFDM 16-QAM
OFDM 16-QAM
OFDM 16-QAM
OFDM 16-QAM
OFDM 16-QAM
OFDM 4-QAM
OFDM 4-QAM
OFDM 4-QAM
11. III WTON, May 28-29th 2014, Campinas (Brazil)
GMPLS control plane with active stateful PCE
An active stateful PCE can compute paths based on both the TED and the LSPDB,
and additionally can control (i.e., re-optimize) existing LSPs delegated by the
GMPLS controllers
11
Adaptive
NMS
LSPDB
PCE
server
Network
State
TED
PathComp
LSP
State
LSPDB
TED Synch
GMPLS
Controller
TED LSPDB
GMPLS
Controller
TEDLSPDB
• LSPDB Synch
• LSP Control Delegation
• LSP Reroute Request
• Path computation services (new
connections, re-optimization,
restoration)
LSP
Setup /Reroute/ Release
Request
• LSP Setup/Reroute/Release
• Network state
dissemination
• Neighbor discovery and
Link property correlation
12. III WTON, May 28-29th 2014, Campinas (Brazil)
GMPLS control plane with active stateful PCE with
instantiation
An active stateful PCE with instantiation can compute paths based on both the TED
and the LSPDB, setup/release new LSPs, and re-optimize existing LSPs.
PCE becomes a full connection controller.
12
LSPDB
PCE
Controller
Network
State
TED
PathComp
LSP
State
LSPDB
TED Synch
GMPLS
Controller
TED LSPDB
GMPLS
Controller
TEDLSPDB
• LSP setup/reroute and
release request services
• LSPDB Synch
• LSP Control Delegation
• LSP Reroute Request
• LSP Setup/Release Request
• LSP Setup/Reroute/Release
• Network state
dissemination
• Neighbor discovery and
Link property correlation
Adaptive
NMS
13. III WTON, May 28-29th 2014, Campinas (Brazil)
Dynamic Provisioning via a Stateful PCE with Instantiation
Capabilities in GMPLS-Controlled Flexi-grid DWDM
Networks
13
14. III WTON, May 28-29th 2014, Campinas (Brazil)
OpenFlow control plane
Control plane is decoupled from data plane and logically centralized in a single
controller
A well-defined API allows applications to control the network (defining the
network and how it is virtually interconnected)
A vendor-agnostic and standardized interface between the controller and the data
plane (e.g., OpenFlow, Forces)
14
Adaptive
NMS
• Path Computation Services
• Connection Setup /Reroute/
Release/ Request
LSPDB
• Connection
Setup/Reroute/Release
• Network state discovery
OpenFlow
PCEP
Not Defined
Network
State.
TED
SDN
Controller
LSPState
LSPD
API
PathComp
15. III WTON, May 28-29th 2014, Campinas (Brazil)
OpenSlice: an OpenFlow-based Control Plane for Spectrum
Sliced Elastic Optical Path Networks
16. III WTON, May 28-29th 2014, Campinas (Brazil)
OpenFlow control plane: PCE as external application
The PCE (stateless or passive stateful) is formally separated from the SDN controller.
The PCC is an application of the controller that requests path computation to the PCE.
The TED and LSPDB may be obtained from an external server, or through the PCC.
16
OpenFlow
Controller
TED LSPDB
API
• Path Computation Services
• TED Synch
• LSPDB Synch
Adaptive
NMS
PCC
PCE
LSPDBTED
• Path Computation Services
• Connection Setup /Reroute/
Release/ Request
LSPDB
• Connection
Setup/Reroute/Release
• Network state discovery
OpenFlow
PCEP
Topology
Server.
TED
LSP
Server.
LSPD
L. Liu, et al., “Experimental demonstration of an OpenFlow/PCE integrated control plane for IP over translucent
WSON with the assistance of …,” ECOC 2012, Paper Tu.1.D.3, Sep. 2012
L. Liu, et al., “Interworking between OpenFlow and PCE for dynamic wavelength path control in multi-domain WSON,”
OFC/NFOEC 2012, Paper OM3G.2, Mar. 2012
17. III WTON, May 28-29th 2014, Campinas (Brazil)
OpenFlow control plane: Integrated PCE and OpenFlow
controller
Full integration of the OpenFlow controller and an active stateful PCE with
instantiation capabilities.
Interfaces are internal and both components have access to a single instance of the
TED and LSPDB.
17
Integrated
OpenFlow
and PCE
Controller
TED LSPDB
API
Adaptive
NMS
• Connection setup/reroute and
release request services
LSPDB
• Connection
Setup/Reroute/Release
• Network state discovery
OpenFlow
PCEP
18. III WTON, May 28-29th 2014, Campinas (Brazil)
An Integrated Stateful PCE / OpenFlow controller for the
Control and Management of Flexi-Grid Optical Networks
18
19. III WTON, May 28-29th 2014, Campinas (Brazil)
NOX
Beijing, China Tokyo, Japan Barcelona, Spain
L. Liu, et al., “First field trial of an OpenFlow-based unified control plane for multi-layer multi-
granularity optical networks,” OFC/NFOEC 2012 Postdeadline, Paper PDP5D.2, Mar. 2012
OpenFlow
OBS WSON
IP IP IP
WSON
IP
WSON
OpenFlow-controlled IP/OBS/fixed-grid WSON
IP Router
Transponder
OBS Router
PXC
OpenFlow Control Plane: Field Trial and Multi-vendor
Interoperability
20. III WTON, May 28-29th 2014, Campinas (Brazil)
OpenFlow Control Plane: Field Trial and Multi-vendor
Interoperability (cont’d)
M. Channegowda, et al,, First Demonstration of an OpenFlow based Software-Defined Optical
Network Employing Packet, ECOC 2012, Postdeadline Paper Th.3.D
21. III WTON, May 28-29th 2014, Campinas (Brazil)
SDN network orchestration: Physical network topology
and Centralized Path Computation
21
Flow
Programmer
REST API
Topology
Rest API
PCEPBGP-LS
OPS
OPS
OPS
OPS
OPS
OPS
OPS
OPS
OPS
OPS
SDN Controller
REST API
OpenFlow
GMPLS
Controller
TED LSPDB
SDN Controller
REST API
GMPLS
Controller
TED LSPDB
GMPLS
Controller
TED LSPDB
GMPLS
Controller
TED LSPDB OpenFlow
Orchestration Controller
Provisioning
Manager TED
Topology
Server
Active Stateful
PCE
TED LSPDBTED
Topology
Server
VNTM
LSPDB
Flow
Server
PCE
22. III WTON, May 28-29th 2014, Campinas (Brazil)
22
First international SDN-based Network Orchestration of
Variable-capacity OPS over Programmable Flexi-grid EON
PCEP extensions for
openflow
23. III WTON, May 28-29th 2014, Campinas (Brazil)
SDN Network orchestration: abstracted network topology
and Distributed Path Computation
23
PCEPBGP-LS
OPS
OPS
OPS
OPS
OPS
OPS
OPS
OPS
OPS
OPS
SDN Controller
REST API
OpenFlow
GMPLS
Controller
TED LSPDB
SDN Controller
REST API
GMPLS
Controller
TED LSPDB
GMPLS
Controller
TED LSPDB
GMPLS
Controller
TED LSPDB OpenFlow
Orchestration Controller
Provisioning
Manager TED
Topology
Server
Active Stateful
PCE
TED LSPDBTED
Topology
Server
VNTM
LSPDB
Flow
Server
Flow
Prov.
Manager
Abstract
Topology
Manager
Path
Segment
Expansion
Flow
Prov.
Manager
Abstract
Topology
Server
Path
Segment
Expansion
PCE
24. III WTON, May 28-29th 2014, Campinas (Brazil)
ABNO-based Network Orchestration of end-to-end Multi-layer
(OPS/OCS) Provisioning across SDN/OpenFlow and
GMPLS/PCE Control Domains
24
Domain A (OPS)
1
1
Virtual OCS
Node – V4
Domain BDomain A Domain C
A1
B4B1
Virtual node
OPS -V1
1
1
E4
E1
Domain E Domain F
11
3
2
Virtual OPS
Node - V2
Virtual OCS
node - V3
B2
2
2
1
Domain B(Hybrid OCS/OPS)
3
2
3
Domain F (OPS)
3
1
1 Virtual node
OPS - V8
1
OPS
OCS
Virtual OPS
Node – V6
Virtual OCS
node – V7
2
Domain E (Hybrid OCS/OPS)
3
2
1
2
1 2
1
3
1
E2
E3
1
1
2
3
A2
A3
F1
F2
F3
B3
Abstracted Topology
Physical Topology
C2C1
C3
10 20
Domain C (OCS)
25. III WTON, May 28-29th 2014, Campinas (Brazil)
SDN Network orchestration: Active Stateful Hierachical
PCE (AS H-PCE)
25
PCEPBGP-LS
OPS
OPS
OPS
OPS
OPS
OPS
OPS
OPS
OPS
OPS
SDN Controller
OpenFlow
GMPLS
Controller
TED LSPDB
SDN Controller
REST API
GMPLS
Controller
TED LSPDB
GMPLS
Controller
TED LSPDB
GMPLS
Controller
TED LSPDB OpenFlow
Orchestration Controller
Provisioning
Manager TED
Topology
Server
Active Stateful
PCE
TED LSPDBTED
Topology
Server
VNTM
LSPDB
Flow
Server
Abstract
Topology
Server
REST API
Abstract
Topology
Server
PCE
Active
Stateful
PCE
Active
Stateful
PCE
PCEP
PCEPPCEP
26. III WTON, May 28-29th 2014, Campinas (Brazil)
SDN based Provisioning Orchestration of OpenFlow/GMPLS
Flexi-grid Networks with a Stateful Hierarchical PCE
26
0
10
20
30
40000 42000 44000 46000 48000 50000 52000
0
0.1
0.2
0.3
0.4
0.5
0.6
0.7
0.8
0.9
1
h
is
to
g
ra
m
c
d
microseconds
y
27. III WTON, May 28-29th 2014, Campinas (Brazil)
Final target: Control orchestration Protocol (COP)
27
OPS
OPS
OPS
OPS
OPS
OPS
OPS
OPS
OPS
OPS
SDN Controller
OpenFlow
GMPLS
Controller
TED LSPDB
SDN Controller
GMPLS
Controller
TED LSPDB
GMPLS
Controller
TED LSPDB
GMPLS
Controller
TED LSPDB OpenFlow
Orchestration Controller
Provisioning
Manager PCETED
Topology
Server
Active Stateful
PCE
TED LSPDBTED
Topology
Server
VNTM
LSPDB
Flow
Server
Flow
Segment
Manager
Abstract
Topology
Manager
Path
Segment
Expansion
Flow
Segment
Manager
Abstract
Topology
Server
Path
Segment
Expansion
COP
COPCOP COP
COPCOP
28. III WTON, May 28-29th 2014, Campinas (Brazil)
Multi-domain transport Network Virtualization
Network Hypervisor
(Abstraction, Partitioning and Composition)
GMPLS
Controller
GMPLS
Controller
GMPLS
Controller
GMPLS
Controller
GMPLS
Controller
GMPLS
Controller
Stateful
PCE
TED LSPDB
Stateful
PCE
TED LSPDB
SDN
Controller
SDN
Controller
Active Stateful
PCE
TED LSPDB
SDN
Controller
REST API
OpenFlow
29. III WTON, May 28-29th 2014, Campinas (Brazil)
Dynamic Multi-domain Virtual Optical Networks
Deployment with Heterogeneous Control Domains
29
30. III WTON, May 28-29th 2014, Campinas (Brazil)
Experimental demonstration of a Virtual Optical Network
Resource Broker and Compositor for dynamic GMPLS
WSON infrastructure services
30
LD
Link Resource
Manager
Connection Controller
GMPLS
RSVP-TE
TED
GMPLS
OSPF-TE
Path
Computation
HAL
OLRM
Routing Controller
1G PCIe
RJ45
OCC
…
IP
FORWARDING
1G PCIe
RJ45
FIB
LD
Link Resource
Manager
1G PCIe
RJ45
LD
Link Resource
Manager
Connection Controller
GMPLS
RSVP-TE
TED
GMPLS
OSPF-TE
Path
Computation
HAL
OLRM
Routing Controller
1G PCIe
RJ45
OCC
…
IP
FORWARDING
1G PCIe
RJ45
FIB
LD
Link Resource
Manager
1G PCIe
RJ45
PHYSICALHOST
1G PCIe
RJ45
1G PCIe
RJ45
1G PCIe
RJ45
GUEST
GUEST
DATAPLANE
KVM
bridge
KVM
bridge
KVM
bridge
Virtualized
IPCC
Virtualized
IPCC
Virtualized
CCI
31. III WTON, May 28-29th 2014, Campinas (Brazil)
Functional and structural fixed-mobile convergence.
31
eNodeB
Residential
Access Aggregation Core
MPLS-TP
WSON
AEN
Business
AEN
PON
IP backbone
Mobile Core (EPC)
Point-to-point
links
xDLS
FTTH
CSG
SGW
BNG
PGW
SDN
Ctrl
Cloud (Datacenter)
…CDN
VNFs
Cloud
Router
- AAA
- vEPC (only control i.e., MME,
S/PGW-C)
- …
NFV
32. III WTON, May 28-29th 2014, Campinas (Brazil)
Summary
Overview of the most outstanding experimental research activities on optical
networking and systems carried out by CTTC in the ADRENALINE testbed in the
framework of European research projects.
Summary of main R&D areas requiring significant research effort:
Software-defined optical transmission and elastic network programmability for time,
frequency and space division multiplexing.
Multi-carrier transmission technologies for adaptive bandwidth/spectrum usage.
Optical Transport SDN for network slicing and unified multi-layer control
GMPLS/PCE control plane architectures for carrier-grade multi-domain backbone
optical networks
SDN orchestration for end-to-end provisioning and network virtualization in multi-
domain and multi-layer optical transport networks with heterogeneous control planes.
Integrated IT and optical network resource orchestration for intra and inter
datacenter connectivity.
Functional and structural fixed-mobile convergence.
º 32