This document discusses optimizing radio network coverage through antenna azimuth tuning. It explains that coverage can be improved by better serving "high usage areas" (HUA), where there are many users. HUAs may be in a cell's good or bad coverage areas. The document proposes using an intelligent antenna steering device to automatically scan azimuth orientations and identify the best heading to improve coverage of HUAs. This approach aims to minimize dropped calls and access failures while increasing throughput, leading to better customer experience, revenue growth, and returns on investment.
The document discusses various types of antennas used for wireless LANs. It describes how directional antennas radiate RF energy predominantly in one direction, while omnidirectional antennas radiate equally in all horizontal directions. Key points include:
- Directional antennas include Yagis and parabolic dishes, which have a narrow beamwidth. Omnidirectional types include dipoles, patches, and various indoor/outdoor models.
- Parameters like gain, beamwidth, bandwidth, polarization and EIRP are defined. Higher gain antennas have a stronger but narrower signal.
- Common Cisco antenna models are described for 2.4GHz and 5GHz networks, including rubber ducks, ceiling mounts,
Cisco WLAN - Chapter. 03 : wireless radio technologyYaser Rahmati
This document provides an overview of wireless radio technology concepts including:
1. Wireless propagation is affected by attenuation from obstructions, reflection, refraction, and diffraction of radio signals. Multipath reflection can reduce signal strength.
2. Weather such as rain, snow, ice and wind can impact wireless signals through attenuation, damage to antennas, or changing the aim of antennas.
3. Wireless power is measured in watts and decays exponentially over distance according to the inverse square law. Power ratios and decibel measurements are used to quantify changes in signal strength.
WLAN performance optimization at Avans University of Applied Sciences7signal Solutions, Inc.
This is an example report of WLAN network optimization project from Avans University of Applied Sciences (Netherlands). 7signal and Avans U deployed 7signal Sapphire Technology to Learning Center area and implement parameter changes to network to improve it's capacity, performance and Quality of Experience (QoE) it offers for end users.
This document provides guidance on conducting a radio survey for a GSM network plan. It discusses choosing site locations based on coverage, traffic, cost and feasibility. The site survey aims to obtain accurate wireless propagation data and basic site information. Proper equipment is recommended, including a GPS, compass, test mobile and optional items like telescopes, cameras and drive test equipment. A team of engineers and local support is also needed to perform the thorough survey.
Laser communications systems use lasers to transmit data through free space instead of fiber optic cables. They require line-of-sight between a transmitter and receiver. The transmitter includes a laser diode and signal processing, while the receiver has a telescope, detector, and signal processor. Modulation techniques include AM, PWM, and PFM. Advantages over radio frequency include higher bandwidth, directability, and security from a narrow beam. Applications include satellite links, underwater networks, and space communications where fiber is impractical.
This document discusses optimizing radio network coverage through antenna azimuth tuning. It explains that coverage can be improved by better serving "high usage areas" (HUA), where there are many users. HUAs may be in a cell's good or bad coverage areas. The document proposes using an intelligent antenna steering device to automatically scan azimuth orientations and identify the best heading to improve coverage of HUAs. This approach aims to minimize dropped calls and access failures while increasing throughput, leading to better customer experience, revenue growth, and returns on investment.
The document discusses various types of antennas used for wireless LANs. It describes how directional antennas radiate RF energy predominantly in one direction, while omnidirectional antennas radiate equally in all horizontal directions. Key points include:
- Directional antennas include Yagis and parabolic dishes, which have a narrow beamwidth. Omnidirectional types include dipoles, patches, and various indoor/outdoor models.
- Parameters like gain, beamwidth, bandwidth, polarization and EIRP are defined. Higher gain antennas have a stronger but narrower signal.
- Common Cisco antenna models are described for 2.4GHz and 5GHz networks, including rubber ducks, ceiling mounts,
Cisco WLAN - Chapter. 03 : wireless radio technologyYaser Rahmati
This document provides an overview of wireless radio technology concepts including:
1. Wireless propagation is affected by attenuation from obstructions, reflection, refraction, and diffraction of radio signals. Multipath reflection can reduce signal strength.
2. Weather such as rain, snow, ice and wind can impact wireless signals through attenuation, damage to antennas, or changing the aim of antennas.
3. Wireless power is measured in watts and decays exponentially over distance according to the inverse square law. Power ratios and decibel measurements are used to quantify changes in signal strength.
WLAN performance optimization at Avans University of Applied Sciences7signal Solutions, Inc.
This is an example report of WLAN network optimization project from Avans University of Applied Sciences (Netherlands). 7signal and Avans U deployed 7signal Sapphire Technology to Learning Center area and implement parameter changes to network to improve it's capacity, performance and Quality of Experience (QoE) it offers for end users.
This document provides guidance on conducting a radio survey for a GSM network plan. It discusses choosing site locations based on coverage, traffic, cost and feasibility. The site survey aims to obtain accurate wireless propagation data and basic site information. Proper equipment is recommended, including a GPS, compass, test mobile and optional items like telescopes, cameras and drive test equipment. A team of engineers and local support is also needed to perform the thorough survey.
Laser communications systems use lasers to transmit data through free space instead of fiber optic cables. They require line-of-sight between a transmitter and receiver. The transmitter includes a laser diode and signal processing, while the receiver has a telescope, detector, and signal processor. Modulation techniques include AM, PWM, and PFM. Advantages over radio frequency include higher bandwidth, directability, and security from a narrow beam. Applications include satellite links, underwater networks, and space communications where fiber is impractical.
Optimizing your client's wi fi experience Cisco Canada
The document discusses optimizing a client's Wi-Fi experience and includes an agenda covering: optimizing layers 1 and 2, innovations for improved client experience, what is possible in non-Apple environments, and new technologies. It then provides details on optimizing layer 2, including ensuring proper fundamentals like RF design, signal power levels, and channel utilization. Tools for validating that radio resource management (RRM) is working properly are also discussed, like viewing channel and power distributions and client RSSI/SNR levels in Prime Maps and WLC Config Analyzer.
This document is a curriculum vitae for Sushil Kumar Kushwaha. It summarizes his professional experience in radio network optimization spanning over 8 years, including 3 months of onsite experience working with AT&T USA on LTE and WCDMA network expansion and optimization projects. It also lists his technical skills, qualifications, and contact information.
This document provides information about Gangasuthan M.'s industrial training at Dialog Axiata PLC from January 4th to March 27th, 2016. It discusses Dialog's background as a subsidiary of Axiata Group Berhad, a major Asian telecommunications provider. The training focused on access network planning, which is responsible for operations like site planning, network optimization, and responding to customer issues. Key components of GSM networks and concepts like interference management are also outlined. The document describes technologies encountered during site visits like antennas, repeaters, and acceptance testing procedures used to ensure quality.
Optimizing your client's wi fi experienceCisco Canada
The document provides an agenda for optimizing a client's Wi-Fi experience, beginning with optimizing layers 1 and 2. It discusses fundamentals like signal power and the inverse square law. It emphasizes keeping packet error rates low for voice calls. Tools like Cisco Prime Maps and WLC Config Analyzer can help validate that neighbor relations, channel assignments, transmit power levels and client SNR distributions are optimized. The goal is to keep most clients above a 25 dB SNR for high data rates.
O3b provides high-speed satellite internet connectivity using a constellation of satellites in medium earth orbit. Some key points:
- O3b's satellites offer fiber-like latency between 120-150ms and throughput up to 1.2Gbps, making it 4x faster than geostationary satellites.
- The initial constellation consists of 8 satellites that revolve around Earth approximately 4 times per day, providing continuous coverage anywhere from 45 degrees north to south of the equator.
- O3b offers connectivity solutions for enterprises, mobile network backhaul, maritime, and oil and gas customers, with steerable satellite beams that can follow ships or oil rigs.
This document summarizes Sunsight's antenna alignment tool (AAT). It discusses Sunsight's philosophy of accurate antenna installation. The AAT allows accurate measurement of antenna azimuth, tilt, roll, height and location. Using the AAT leads to more accurate antenna deployment, faster network builds, improved network performance, and reduced costs. Case studies show antennas are often misaligned without proper tools. The AAT pays for itself by reducing re-works. Customers require its use due to improved quality of service.
This document provides an overview of key considerations for setting up a wireless ISP (WISP). It discusses Tranzeo Wireless as a vendor, emphasizing their support, reliable products, and helping customers design cost-effective solutions. Several technical aspects are covered, such as choosing the right equipment, conducting site surveys, managing bandwidth, and ensuring reliable connections. The document stresses that every location has unique needs, and finding the right vendor is important to receiving proper guidance on planning and optimizing a WISP network.
WCDMA network optimization involves four key steps:
1. Coverage optimization to ensure adequate signal levels across the network.
2. Neighbor optimization to create accurate neighbor lists and avoid dropped calls.
3. Pilot pollution optimization to reduce interference between cells by adjusting tilts and adding sites.
4. Soft handover optimization to limit the percentage of routes in soft handover through tilt and azimuth changes.
The Near Detector successfully collected good quality data 79.7% of the time while the Far Detector's success rate was 86.2%. Data quality is determined by monitoring hardware performance, beam conditions, and reconstruction quality on both the subrun and spill level for the Near Detector and subrun level for the Far Detector. The Far Detector can mask out faulty sections to maximize the amount of usable data collected.
Hussam Eddin Al-Jammal has over 7.5 years of experience in GSM RF planning, optimization, and performance monitoring. He has worked for major wireless operators in Syria, Saudi Arabia, Algeria, and Tunisia. His responsibilities have included frequency planning, drive testing, parameter tuning, and improving key performance indicators to enhance network quality and reduce call drops, handover failures, and other issues. He is proficient with Ericsson optimization tools and has strong programming skills.
This document discusses radio frequency (RF) optimization, which involves activities to achieve and maintain the required network quality as designed. Reasons for optimization include inaccuracies in radio planning, implementation issues, and environmental changes. The key goals of single band optimization are to provide good coverage and interference levels, as well as good handover behavior and traffic distribution. The optimization process involves site audits, parameter verification, problem identification and prioritization, solution implementation, and retesting. Drive testing is then analyzed to identify issues like cell dragging, dropped calls, ping ponging, and handover boundary problems in order to propose corrective actions.
The document provides an overview and agenda for optimizing a Wi-Fi network. It discusses optimizing the physical layer by properly placing access points to ensure adequate coverage and overlapping signals to allow for seamless roaming. It also discusses optimizing the data link layer by adjusting settings like SSIDs, transmission power levels, and channels to improve performance, capacity and roaming. Tools like Cisco Prime and WLCCA are recommended to analyze settings like channels, power levels, and neighbor relations to validate that RF resource management is working correctly.
The document outlines the procedure for CDMA network design in 5 stages:
1. Preparations including setting design criteria like coverage reliability, capacity, and soft handoff ratios.
2. RF environment analysis involving region clustering, site surveys, competitor analysis, and link budget analysis.
3. Coverage design for outdoor, indoor, and underground areas.
4. Parameter design including pilot assignment and base station dimensioning.
5. Reporting and dimensioning to determine equipment requirements.
The document provides information on drive testing in GSM networks. Drive testing involves using mobile devices to collect network performance data along predetermined routes. This helps evaluate coverage, availability, capacity, retainability, and call quality from the subscriber perspective. Key aspects discussed include the hardware requirements for drive testing (laptop, data collection software, mobile phones, GPS), different test modes (dedicated call, idle, scan), and important metrics to analyze (Rx level, Rx quality, bit error rate, frame erasure rate, speech quality index). TEMS software is highlighted as a common tool for collecting data and analyzing network performance based on drive test results.
Top 10 Wi-Fi Challenges in OrganizationsEric Camulli
Top 10 Wi-Fi issues and challenges experienced in enterprises, hospitals, universities...This presentation developed by 7signal founder Veli-Pekka Ketonen, will help you look in the right places on your WLAN so that you can enhance Wi-Fi performance, which improves everyone's productivity. 7signal provides a Wi-Fi performance management system that proactively monitors and measures performance. It also provides analysis and Wi-Fi analytics as well as recommendations for improving the Wi-Fi experience for end users. You can read more about this at http://www.7signal.com/products/sapphire-platform-overview/
This is a talk for the Hablemos de ALMA (Let's Speak about ALMA) internal outreach series where the first project of the ALMA 2030 Roadmap, the Wideband Sensitivity Upgrade (WSU) is described.
In this talk the expected science benefits are discussed first by John Carpenter; then complexities of Systems Engineering and why those processes will be needed are talked about by Juande Santander-Vela; and finally, the Project Management issues of this upgrade are considered by Carla Crovari.
This version of the talk took place on the ALMA Santiago Central Office (SCO) on August 19th, 2022.
Extend Your Journey: Introducing Signal Strength into Location-based Applicat...Chih-Chuan Cheng
Reducing the communication energy is essential to facilitate the growth of emerging mobile applications. In this paper, we introduce signal strength into location-based applications to reduce the energy consumption of mobile devices for data reception. First, we model the problem of data fetch scheduling, with the objective of minimizing the energy required to fetch location-based information without adversely impacting user experience. Then, we propose a dynamic-programming algorithm to solve the fundamental problem and prove its optimality in terms of energy savings. We also provide an optimality condition with respect to signal strength fluctuations. Finally, based on the algorithm, we consider implementation issues. We have also developed a virtual tour system integrated with existing web applications to validate the practicability of the proposed concept. The results of experiments conducted based on real-world case studies are very encouraging.
Measurement Procedures for Design and Enforcement of Harm Claim ThresholdsPierre de Vries
Presentation at DySPAN 2017, March 2017
Paper forthcoming on IEEE Xplore
Paper authors:
Janne Riihijärvi, Petri Mähönen (RWTH Aachen University, Germany)
J. Pierre de Vries (Silicon Flatirons Centre, University of Colorado, USA)
The document discusses K parameters used in propagation models. K1-K2 relate to path loss intercept and slope. K3-K4 relate to mobile height. K5-K6 relate to effective base station antenna height and how it affects path loss. K7 relates to diffraction effects. All K parameters must keep the same polarity as the original Okumura-Hata model. Model tuning aims to minimize standard deviation error and provide zero mean error to accurately characterize network limits and propagation effects in a given region. Continuous wave drive tests are conducted to collect data for model tuning.
Dandelion Hashtable: beyond billion requests per second on a commodity serverAntonios Katsarakis
This slide deck presents DLHT, a concurrent in-memory hashtable. Despite efforts to optimize hashtables, that go as far as sacrificing core functionality, state-of-the-art designs still incur multiple memory accesses per request and block request processing in three cases. First, most hashtables block while waiting for data to be retrieved from memory. Second, open-addressing designs, which represent the current state-of-the-art, either cannot free index slots on deletes or must block all requests to do so. Third, index resizes block every request until all objects are copied to the new index. Defying folklore wisdom, DLHT forgoes open-addressing and adopts a fully-featured and memory-aware closed-addressing design based on bounded cache-line-chaining. This design offers lock-free index operations and deletes that free slots instantly, (2) completes most requests with a single memory access, (3) utilizes software prefetching to hide memory latencies, and (4) employs a novel non-blocking and parallel resizing. In a commodity server and a memory-resident workload, DLHT surpasses 1.6B requests per second and provides 3.5x (12x) the throughput of the state-of-the-art closed-addressing (open-addressing) resizable hashtable on Gets (Deletes).
Skybuffer AI: Advanced Conversational and Generative AI Solution on SAP Busin...Tatiana Kojar
Skybuffer AI, built on the robust SAP Business Technology Platform (SAP BTP), is the latest and most advanced version of our AI development, reaffirming our commitment to delivering top-tier AI solutions. Skybuffer AI harnesses all the innovative capabilities of the SAP BTP in the AI domain, from Conversational AI to cutting-edge Generative AI and Retrieval-Augmented Generation (RAG). It also helps SAP customers safeguard their investments into SAP Conversational AI and ensure a seamless, one-click transition to SAP Business AI.
With Skybuffer AI, various AI models can be integrated into a single communication channel such as Microsoft Teams. This integration empowers business users with insights drawn from SAP backend systems, enterprise documents, and the expansive knowledge of Generative AI. And the best part of it is that it is all managed through our intuitive no-code Action Server interface, requiring no extensive coding knowledge and making the advanced AI accessible to more users.
Optimizing your client's wi fi experience Cisco Canada
The document discusses optimizing a client's Wi-Fi experience and includes an agenda covering: optimizing layers 1 and 2, innovations for improved client experience, what is possible in non-Apple environments, and new technologies. It then provides details on optimizing layer 2, including ensuring proper fundamentals like RF design, signal power levels, and channel utilization. Tools for validating that radio resource management (RRM) is working properly are also discussed, like viewing channel and power distributions and client RSSI/SNR levels in Prime Maps and WLC Config Analyzer.
This document is a curriculum vitae for Sushil Kumar Kushwaha. It summarizes his professional experience in radio network optimization spanning over 8 years, including 3 months of onsite experience working with AT&T USA on LTE and WCDMA network expansion and optimization projects. It also lists his technical skills, qualifications, and contact information.
This document provides information about Gangasuthan M.'s industrial training at Dialog Axiata PLC from January 4th to March 27th, 2016. It discusses Dialog's background as a subsidiary of Axiata Group Berhad, a major Asian telecommunications provider. The training focused on access network planning, which is responsible for operations like site planning, network optimization, and responding to customer issues. Key components of GSM networks and concepts like interference management are also outlined. The document describes technologies encountered during site visits like antennas, repeaters, and acceptance testing procedures used to ensure quality.
Optimizing your client's wi fi experienceCisco Canada
The document provides an agenda for optimizing a client's Wi-Fi experience, beginning with optimizing layers 1 and 2. It discusses fundamentals like signal power and the inverse square law. It emphasizes keeping packet error rates low for voice calls. Tools like Cisco Prime Maps and WLC Config Analyzer can help validate that neighbor relations, channel assignments, transmit power levels and client SNR distributions are optimized. The goal is to keep most clients above a 25 dB SNR for high data rates.
O3b provides high-speed satellite internet connectivity using a constellation of satellites in medium earth orbit. Some key points:
- O3b's satellites offer fiber-like latency between 120-150ms and throughput up to 1.2Gbps, making it 4x faster than geostationary satellites.
- The initial constellation consists of 8 satellites that revolve around Earth approximately 4 times per day, providing continuous coverage anywhere from 45 degrees north to south of the equator.
- O3b offers connectivity solutions for enterprises, mobile network backhaul, maritime, and oil and gas customers, with steerable satellite beams that can follow ships or oil rigs.
This document summarizes Sunsight's antenna alignment tool (AAT). It discusses Sunsight's philosophy of accurate antenna installation. The AAT allows accurate measurement of antenna azimuth, tilt, roll, height and location. Using the AAT leads to more accurate antenna deployment, faster network builds, improved network performance, and reduced costs. Case studies show antennas are often misaligned without proper tools. The AAT pays for itself by reducing re-works. Customers require its use due to improved quality of service.
This document provides an overview of key considerations for setting up a wireless ISP (WISP). It discusses Tranzeo Wireless as a vendor, emphasizing their support, reliable products, and helping customers design cost-effective solutions. Several technical aspects are covered, such as choosing the right equipment, conducting site surveys, managing bandwidth, and ensuring reliable connections. The document stresses that every location has unique needs, and finding the right vendor is important to receiving proper guidance on planning and optimizing a WISP network.
WCDMA network optimization involves four key steps:
1. Coverage optimization to ensure adequate signal levels across the network.
2. Neighbor optimization to create accurate neighbor lists and avoid dropped calls.
3. Pilot pollution optimization to reduce interference between cells by adjusting tilts and adding sites.
4. Soft handover optimization to limit the percentage of routes in soft handover through tilt and azimuth changes.
The Near Detector successfully collected good quality data 79.7% of the time while the Far Detector's success rate was 86.2%. Data quality is determined by monitoring hardware performance, beam conditions, and reconstruction quality on both the subrun and spill level for the Near Detector and subrun level for the Far Detector. The Far Detector can mask out faulty sections to maximize the amount of usable data collected.
Hussam Eddin Al-Jammal has over 7.5 years of experience in GSM RF planning, optimization, and performance monitoring. He has worked for major wireless operators in Syria, Saudi Arabia, Algeria, and Tunisia. His responsibilities have included frequency planning, drive testing, parameter tuning, and improving key performance indicators to enhance network quality and reduce call drops, handover failures, and other issues. He is proficient with Ericsson optimization tools and has strong programming skills.
This document discusses radio frequency (RF) optimization, which involves activities to achieve and maintain the required network quality as designed. Reasons for optimization include inaccuracies in radio planning, implementation issues, and environmental changes. The key goals of single band optimization are to provide good coverage and interference levels, as well as good handover behavior and traffic distribution. The optimization process involves site audits, parameter verification, problem identification and prioritization, solution implementation, and retesting. Drive testing is then analyzed to identify issues like cell dragging, dropped calls, ping ponging, and handover boundary problems in order to propose corrective actions.
The document provides an overview and agenda for optimizing a Wi-Fi network. It discusses optimizing the physical layer by properly placing access points to ensure adequate coverage and overlapping signals to allow for seamless roaming. It also discusses optimizing the data link layer by adjusting settings like SSIDs, transmission power levels, and channels to improve performance, capacity and roaming. Tools like Cisco Prime and WLCCA are recommended to analyze settings like channels, power levels, and neighbor relations to validate that RF resource management is working correctly.
The document outlines the procedure for CDMA network design in 5 stages:
1. Preparations including setting design criteria like coverage reliability, capacity, and soft handoff ratios.
2. RF environment analysis involving region clustering, site surveys, competitor analysis, and link budget analysis.
3. Coverage design for outdoor, indoor, and underground areas.
4. Parameter design including pilot assignment and base station dimensioning.
5. Reporting and dimensioning to determine equipment requirements.
The document provides information on drive testing in GSM networks. Drive testing involves using mobile devices to collect network performance data along predetermined routes. This helps evaluate coverage, availability, capacity, retainability, and call quality from the subscriber perspective. Key aspects discussed include the hardware requirements for drive testing (laptop, data collection software, mobile phones, GPS), different test modes (dedicated call, idle, scan), and important metrics to analyze (Rx level, Rx quality, bit error rate, frame erasure rate, speech quality index). TEMS software is highlighted as a common tool for collecting data and analyzing network performance based on drive test results.
Top 10 Wi-Fi Challenges in OrganizationsEric Camulli
Top 10 Wi-Fi issues and challenges experienced in enterprises, hospitals, universities...This presentation developed by 7signal founder Veli-Pekka Ketonen, will help you look in the right places on your WLAN so that you can enhance Wi-Fi performance, which improves everyone's productivity. 7signal provides a Wi-Fi performance management system that proactively monitors and measures performance. It also provides analysis and Wi-Fi analytics as well as recommendations for improving the Wi-Fi experience for end users. You can read more about this at http://www.7signal.com/products/sapphire-platform-overview/
This is a talk for the Hablemos de ALMA (Let's Speak about ALMA) internal outreach series where the first project of the ALMA 2030 Roadmap, the Wideband Sensitivity Upgrade (WSU) is described.
In this talk the expected science benefits are discussed first by John Carpenter; then complexities of Systems Engineering and why those processes will be needed are talked about by Juande Santander-Vela; and finally, the Project Management issues of this upgrade are considered by Carla Crovari.
This version of the talk took place on the ALMA Santiago Central Office (SCO) on August 19th, 2022.
Extend Your Journey: Introducing Signal Strength into Location-based Applicat...Chih-Chuan Cheng
Reducing the communication energy is essential to facilitate the growth of emerging mobile applications. In this paper, we introduce signal strength into location-based applications to reduce the energy consumption of mobile devices for data reception. First, we model the problem of data fetch scheduling, with the objective of minimizing the energy required to fetch location-based information without adversely impacting user experience. Then, we propose a dynamic-programming algorithm to solve the fundamental problem and prove its optimality in terms of energy savings. We also provide an optimality condition with respect to signal strength fluctuations. Finally, based on the algorithm, we consider implementation issues. We have also developed a virtual tour system integrated with existing web applications to validate the practicability of the proposed concept. The results of experiments conducted based on real-world case studies are very encouraging.
Measurement Procedures for Design and Enforcement of Harm Claim ThresholdsPierre de Vries
Presentation at DySPAN 2017, March 2017
Paper forthcoming on IEEE Xplore
Paper authors:
Janne Riihijärvi, Petri Mähönen (RWTH Aachen University, Germany)
J. Pierre de Vries (Silicon Flatirons Centre, University of Colorado, USA)
The document discusses K parameters used in propagation models. K1-K2 relate to path loss intercept and slope. K3-K4 relate to mobile height. K5-K6 relate to effective base station antenna height and how it affects path loss. K7 relates to diffraction effects. All K parameters must keep the same polarity as the original Okumura-Hata model. Model tuning aims to minimize standard deviation error and provide zero mean error to accurately characterize network limits and propagation effects in a given region. Continuous wave drive tests are conducted to collect data for model tuning.
Dandelion Hashtable: beyond billion requests per second on a commodity serverAntonios Katsarakis
This slide deck presents DLHT, a concurrent in-memory hashtable. Despite efforts to optimize hashtables, that go as far as sacrificing core functionality, state-of-the-art designs still incur multiple memory accesses per request and block request processing in three cases. First, most hashtables block while waiting for data to be retrieved from memory. Second, open-addressing designs, which represent the current state-of-the-art, either cannot free index slots on deletes or must block all requests to do so. Third, index resizes block every request until all objects are copied to the new index. Defying folklore wisdom, DLHT forgoes open-addressing and adopts a fully-featured and memory-aware closed-addressing design based on bounded cache-line-chaining. This design offers lock-free index operations and deletes that free slots instantly, (2) completes most requests with a single memory access, (3) utilizes software prefetching to hide memory latencies, and (4) employs a novel non-blocking and parallel resizing. In a commodity server and a memory-resident workload, DLHT surpasses 1.6B requests per second and provides 3.5x (12x) the throughput of the state-of-the-art closed-addressing (open-addressing) resizable hashtable on Gets (Deletes).
Skybuffer AI: Advanced Conversational and Generative AI Solution on SAP Busin...Tatiana Kojar
Skybuffer AI, built on the robust SAP Business Technology Platform (SAP BTP), is the latest and most advanced version of our AI development, reaffirming our commitment to delivering top-tier AI solutions. Skybuffer AI harnesses all the innovative capabilities of the SAP BTP in the AI domain, from Conversational AI to cutting-edge Generative AI and Retrieval-Augmented Generation (RAG). It also helps SAP customers safeguard their investments into SAP Conversational AI and ensure a seamless, one-click transition to SAP Business AI.
With Skybuffer AI, various AI models can be integrated into a single communication channel such as Microsoft Teams. This integration empowers business users with insights drawn from SAP backend systems, enterprise documents, and the expansive knowledge of Generative AI. And the best part of it is that it is all managed through our intuitive no-code Action Server interface, requiring no extensive coding knowledge and making the advanced AI accessible to more users.
Trusted Execution Environment for Decentralized Process MiningLucaBarbaro3
Presentation of the paper "Trusted Execution Environment for Decentralized Process Mining" given during the CAiSE 2024 Conference in Cyprus on June 7, 2024.
Let's Integrate MuleSoft RPA, COMPOSER, APM with AWS IDP along with Slackshyamraj55
Discover the seamless integration of RPA (Robotic Process Automation), COMPOSER, and APM with AWS IDP enhanced with Slack notifications. Explore how these technologies converge to streamline workflows, optimize performance, and ensure secure access, all while leveraging the power of AWS IDP and real-time communication via Slack notifications.
Have you ever been confused by the myriad of choices offered by AWS for hosting a website or an API?
Lambda, Elastic Beanstalk, Lightsail, Amplify, S3 (and more!) can each host websites + APIs. But which one should we choose?
Which one is cheapest? Which one is fastest? Which one will scale to meet our needs?
Join me in this session as we dive into each AWS hosting service to determine which one is best for your scenario and explain why!
5th LF Energy Power Grid Model Meet-up SlidesDanBrown980551
5th Power Grid Model Meet-up
It is with great pleasure that we extend to you an invitation to the 5th Power Grid Model Meet-up, scheduled for 6th June 2024. This event will adopt a hybrid format, allowing participants to join us either through an online Mircosoft Teams session or in person at TU/e located at Den Dolech 2, Eindhoven, Netherlands. The meet-up will be hosted by Eindhoven University of Technology (TU/e), a research university specializing in engineering science & technology.
Power Grid Model
The global energy transition is placing new and unprecedented demands on Distribution System Operators (DSOs). Alongside upgrades to grid capacity, processes such as digitization, capacity optimization, and congestion management are becoming vital for delivering reliable services.
Power Grid Model is an open source project from Linux Foundation Energy and provides a calculation engine that is increasingly essential for DSOs. It offers a standards-based foundation enabling real-time power systems analysis, simulations of electrical power grids, and sophisticated what-if analysis. In addition, it enables in-depth studies and analysis of the electrical power grid’s behavior and performance. This comprehensive model incorporates essential factors such as power generation capacity, electrical losses, voltage levels, power flows, and system stability.
Power Grid Model is currently being applied in a wide variety of use cases, including grid planning, expansion, reliability, and congestion studies. It can also help in analyzing the impact of renewable energy integration, assessing the effects of disturbances or faults, and developing strategies for grid control and optimization.
What to expect
For the upcoming meetup we are organizing, we have an exciting lineup of activities planned:
-Insightful presentations covering two practical applications of the Power Grid Model.
-An update on the latest advancements in Power Grid -Model technology during the first and second quarters of 2024.
-An interactive brainstorming session to discuss and propose new feature requests.
-An opportunity to connect with fellow Power Grid Model enthusiasts and users.
TrustArc Webinar - 2024 Global Privacy SurveyTrustArc
How does your privacy program stack up against your peers? What challenges are privacy teams tackling and prioritizing in 2024?
In the fifth annual Global Privacy Benchmarks Survey, we asked over 1,800 global privacy professionals and business executives to share their perspectives on the current state of privacy inside and outside of their organizations. This year’s report focused on emerging areas of importance for privacy and compliance professionals, including considerations and implications of Artificial Intelligence (AI) technologies, building brand trust, and different approaches for achieving higher privacy competence scores.
See how organizational priorities and strategic approaches to data security and privacy are evolving around the globe.
This webinar will review:
- The top 10 privacy insights from the fifth annual Global Privacy Benchmarks Survey
- The top challenges for privacy leaders, practitioners, and organizations in 2024
- Key themes to consider in developing and maintaining your privacy program
Building Production Ready Search Pipelines with Spark and MilvusZilliz
Spark is the widely used ETL tool for processing, indexing and ingesting data to serving stack for search. Milvus is the production-ready open-source vector database. In this talk we will show how to use Spark to process unstructured data to extract vector representations, and push the vectors to Milvus vector database for search serving.
In the realm of cybersecurity, offensive security practices act as a critical shield. By simulating real-world attacks in a controlled environment, these techniques expose vulnerabilities before malicious actors can exploit them. This proactive approach allows manufacturers to identify and fix weaknesses, significantly enhancing system security.
This presentation delves into the development of a system designed to mimic Galileo's Open Service signal using software-defined radio (SDR) technology. We'll begin with a foundational overview of both Global Navigation Satellite Systems (GNSS) and the intricacies of digital signal processing.
The presentation culminates in a live demonstration. We'll showcase the manipulation of Galileo's Open Service pilot signal, simulating an attack on various software and hardware systems. This practical demonstration serves to highlight the potential consequences of unaddressed vulnerabilities, emphasizing the importance of offensive security practices in safeguarding critical infrastructure.
HCL Notes and Domino License Cost Reduction in the World of DLAUpanagenda
Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-and-domino-license-cost-reduction-in-the-world-of-dlau/
The introduction of DLAU and the CCB & CCX licensing model caused quite a stir in the HCL community. As a Notes and Domino customer, you may have faced challenges with unexpected user counts and license costs. You probably have questions on how this new licensing approach works and how to benefit from it. Most importantly, you likely have budget constraints and want to save money where possible. Don’t worry, we can help with all of this!
We’ll show you how to fix common misconfigurations that cause higher-than-expected user counts, and how to identify accounts which you can deactivate to save money. There are also frequent patterns that can cause unnecessary cost, like using a person document instead of a mail-in for shared mailboxes. We’ll provide examples and solutions for those as well. And naturally we’ll explain the new licensing model.
Join HCL Ambassador Marc Thomas in this webinar with a special guest appearance from Franz Walder. It will give you the tools and know-how to stay on top of what is going on with Domino licensing. You will be able lower your cost through an optimized configuration and keep it low going forward.
These topics will be covered
- Reducing license cost by finding and fixing misconfigurations and superfluous accounts
- How do CCB and CCX licenses really work?
- Understanding the DLAU tool and how to best utilize it
- Tips for common problem areas, like team mailboxes, functional/test users, etc
- Practical examples and best practices to implement right away
Main news related to the CCS TSI 2023 (2023/1695)Jakub Marek
An English 🇬🇧 translation of a presentation to the speech I gave about the main changes brought by CCS TSI 2023 at the biggest Czech conference on Communications and signalling systems on Railways, which was held in Clarion Hotel Olomouc from 7th to 9th November 2023 (konferenceszt.cz). Attended by around 500 participants and 200 on-line followers.
The original Czech 🇨🇿 version of the presentation can be found here: https://www.slideshare.net/slideshow/hlavni-novinky-souvisejici-s-ccs-tsi-2023-2023-1695/269688092 .
The videorecording (in Czech) from the presentation is available here: https://youtu.be/WzjJWm4IyPk?si=SImb06tuXGb30BEH .
HCL Notes und Domino Lizenzkostenreduzierung in der Welt von DLAUpanagenda
Webinar Recording: https://www.panagenda.com/webinars/hcl-notes-und-domino-lizenzkostenreduzierung-in-der-welt-von-dlau/
DLAU und die Lizenzen nach dem CCB- und CCX-Modell sind für viele in der HCL-Community seit letztem Jahr ein heißes Thema. Als Notes- oder Domino-Kunde haben Sie vielleicht mit unerwartet hohen Benutzerzahlen und Lizenzgebühren zu kämpfen. Sie fragen sich vielleicht, wie diese neue Art der Lizenzierung funktioniert und welchen Nutzen sie Ihnen bringt. Vor allem wollen Sie sicherlich Ihr Budget einhalten und Kosten sparen, wo immer möglich. Das verstehen wir und wir möchten Ihnen dabei helfen!
Wir erklären Ihnen, wie Sie häufige Konfigurationsprobleme lösen können, die dazu führen können, dass mehr Benutzer gezählt werden als nötig, und wie Sie überflüssige oder ungenutzte Konten identifizieren und entfernen können, um Geld zu sparen. Es gibt auch einige Ansätze, die zu unnötigen Ausgaben führen können, z. B. wenn ein Personendokument anstelle eines Mail-Ins für geteilte Mailboxen verwendet wird. Wir zeigen Ihnen solche Fälle und deren Lösungen. Und natürlich erklären wir Ihnen das neue Lizenzmodell.
Nehmen Sie an diesem Webinar teil, bei dem HCL-Ambassador Marc Thomas und Gastredner Franz Walder Ihnen diese neue Welt näherbringen. Es vermittelt Ihnen die Tools und das Know-how, um den Überblick zu bewahren. Sie werden in der Lage sein, Ihre Kosten durch eine optimierte Domino-Konfiguration zu reduzieren und auch in Zukunft gering zu halten.
Diese Themen werden behandelt
- Reduzierung der Lizenzkosten durch Auffinden und Beheben von Fehlkonfigurationen und überflüssigen Konten
- Wie funktionieren CCB- und CCX-Lizenzen wirklich?
- Verstehen des DLAU-Tools und wie man es am besten nutzt
- Tipps für häufige Problembereiche, wie z. B. Team-Postfächer, Funktions-/Testbenutzer usw.
- Praxisbeispiele und Best Practices zum sofortigen Umsetzen
Ivanti’s Patch Tuesday breakdown goes beyond patching your applications and brings you the intelligence and guidance needed to prioritize where to focus your attention first. Catch early analysis on our Ivanti blog, then join industry expert Chris Goettl for the Patch Tuesday Webinar Event. There we’ll do a deep dive into each of the bulletins and give guidance on the risks associated with the newly-identified vulnerabilities.
Introduction of Cybersecurity with OSS at Code Europe 2024Hiroshi SHIBATA
I develop the Ruby programming language, RubyGems, and Bundler, which are package managers for Ruby. Today, I will introduce how to enhance the security of your application using open-source software (OSS) examples from Ruby and RubyGems.
The first topic is CVE (Common Vulnerabilities and Exposures). I have published CVEs many times. But what exactly is a CVE? I'll provide a basic understanding of CVEs and explain how to detect and handle vulnerabilities in OSS.
Next, let's discuss package managers. Package managers play a critical role in the OSS ecosystem. I'll explain how to manage library dependencies in your application.
I'll share insights into how the Ruby and RubyGems core team works to keep our ecosystem safe. By the end of this talk, you'll have a better understanding of how to safeguard your code.
Salesforce Integration for Bonterra Impact Management (fka Social Solutions A...Jeffrey Haguewood
Sidekick Solutions uses Bonterra Impact Management (fka Social Solutions Apricot) and automation solutions to integrate data for business workflows.
We believe integration and automation are essential to user experience and the promise of efficient work through technology. Automation is the critical ingredient to realizing that full vision. We develop integration products and services for Bonterra Case Management software to support the deployment of automations for a variety of use cases.
This video focuses on integration of Salesforce with Bonterra Impact Management.
Interested in deploying an integration with Salesforce for Bonterra Impact Management? Contact us at sales@sidekicksolutionsllc.com to discuss next steps.
Skybuffer SAM4U tool for SAP license adoptionTatiana Kojar
Manage and optimize your license adoption and consumption with SAM4U, an SAP free customer software asset management tool.
SAM4U, an SAP complimentary software asset management tool for customers, delivers a detailed and well-structured overview of license inventory and usage with a user-friendly interface. We offer a hosted, cost-effective, and performance-optimized SAM4U setup in the Skybuffer Cloud environment. You retain ownership of the system and data, while we manage the ABAP 7.58 infrastructure, ensuring fixed Total Cost of Ownership (TCO) and exceptional services through the SAP Fiori interface.
leewayhertz.com-AI in predictive maintenance Use cases technologies benefits ...alexjohnson7307
Predictive maintenance is a proactive approach that anticipates equipment failures before they happen. At the forefront of this innovative strategy is Artificial Intelligence (AI), which brings unprecedented precision and efficiency. AI in predictive maintenance is transforming industries by reducing downtime, minimizing costs, and enhancing productivity.
4. BS4 BS5
BS1 BS2
BS3
BS6 BS7
Your Customers Served in the GEO Area
Weekday BH Snapshot
Users
Users
5. BS4 BS5
BS1 BS2
BS3
BS6 BS7
Users are served @ different service level
Weekday BH Snapshot
RED & GREEN dots: Users with “BAD” & “GOOD” network experience respectively
6. After
4 seconds
10 % of RED DOT users
ABANDON
online videos
After
10 seconds
40% of RED DOT users
have
given up
Web browsing…
25% of RED DOT users
abandon after 4
seconds
50% of RED DOT users
give up after 10
seconds
RED DOT: Users with “BAD” network experience
7. OR, some Users are not Served @ all
Access Failures
Drop Calls
8. Optimizing the radio network means that:
• Drop Calls are minimized (DCR%)
• Access Failures are minimized (AFR%)
• Throughput is increased (Mbps)
The optimization of the above KPI’s always leads to:
• Revenue growth (higher consumption of network time)
• User loyalty (satisfactory user experience)
• Improved returns on investment (RoI)
9. So… the target is to make RED dots GREEN
OR, make GREEN as many as possible…
10. There are 2 ways to make RED dots GREEN:
• Way 1… Increase the Network Resources
o More Base Stations
o More Frequencies
o More Technologies
• Way 2… Utilize better the existing ones
o Increase spectrum efficiency
o Reduce network interference
o Boost radio signal coverage
11. Yes… Way 1 may sound better than Way 2
BUT, Way 1 costs to much and is not always possible…
• Frequencies are scarce and regulated
• New base station installation is really an “issue”
• New technologies… like 4G+ or even 5G?
AFTER ALL, way 2 is not only cost effective
and feasible, but it is also an obligation to
the shareholders for investments made…
12. Azimuth-SON
…making the RED dots GREEN
…by boosting the intelligence of your
existing network, flexibly and smart…
13. What you know about the network?
1. GEO Coverage from simulation tools
2. GEO Coverage from Drive Tests
3. Complaints from Customer Care
4. Hourly & Daily KPI’s from OSS
5. Feedback from other sources
6. What about the RED dots?
14. Yes… you are missing USAGE information
1. “High Usage Areas” (HUA) in a Cell
2. When such areas appear (time/day)
3. Cell’s HUA coverage KPI’s
4. Overall cell stress under HUA pressure
5. Cluster performance under cell stress
6. What is HUA after all?
15. “High Usage Areas” are defined as GEO areas that
present traffic peak for a specific time frame
(permanently, sporadically or repeatedly), these
areas are usually served by a network CELL that is
best server (dominant) in these areas.
16. “High Usage Areas” may appear at any or
at all times in a cell’s GEO area.
There are 2 kind of “High Usage Areas”:
• “Good” & “Bad” HUA’s
→ “Good” HUA’s are located in the cell’s good coverage area
→ “Bad” HUA’s are located in the cell’s bad coverage area
17. “GOOD” coverage HUA…
Such HUA are usually located in the cell’s good
coverage area and present good performance…
• High Cell Avg. RSCP
• High Cell Avg. Ec/Io,
• Low Cell Avg. DCR%,
• Low Cell Avg. AFR%,
• …..
GOOD HUA
HUA is located inside
the antenna’s main
radiation beam
18. “BAD” coverage HUA…
Such HUA are usually located offset the cell’s best
coverage area and present bad performance…
BAD HUA
HUA is located offset
the antenna’s main
radiation beam
• Low Cell Avg. RSCP
• Low Cell Avg. Ec/Io,
• High Cell Avg. DCR%,
• High Cell Avg. AFR%,
• …..
19. The half coverage geo area, of any Radio Base Station
equipped with 65° HBW antennas, has from 50% (3dB) up
to 90% (10dB) less signal strength from the other half.
30°
30°
60°
120°
120°
120°
120°
120°
120°
120°
120°
Is this happening in your network?
20. Optimizing coverage is our mission…
We do it by taking into account the RED & GREEN
dots in the GEO area, without jeopardizing the
performance of the existing coverage footprint.
Our method is based on a SON feature set that:
• Targets to improve the HUA – Radio Base Station RF
link budget (i.e. the effective radiated power (ERP)
on the Cell-Edge), clockwise or counterclockwise the
initial coverage plan.
21. What we do…
• We use an intelligent antenna azimuth steering device
that automatically scans the h-plane within ±15° the
cell’s initial coverage footprint, evaluating clockwise
and counterclockwise the “cell-edge” performance in
order to identify the best antenna azimuth heading for
which the High Usage Areas (HUAs) in a pre-defined
time frame are better served from the network.
In this way we improve the cell’s full 120° coverage footprint simply by
exchanging antenna gain with RF power resource. Saving power to
the RF amplifier, through the system’s embedded power control
mechanism, will enhance the overall cell-cluster performance.
22. • Permanent, sporadic or repeated
• Cell is serving 10 users
• 5 with “GOOD” performance
• 5 with “BAD” performance
• 1 user is Out-of-Coverage
Out-of-Coverage User
(due to lack of resources)
“BAD” performance Users
“GOOD” performance Users
Before HUA optimization (example)…
23. • Permanent, sporadic or repeated
• Cell is serving 11 users
• 8 with “GOOD” performance
• 3 with “BAD” performance
• 0 user is Out-of-Coverage
“BAD” performance Users
“GOOD” performance Users
How this translates?
✓ >10% usage increase
✓ >30% performance increase
✓ 100% user coverage
After HUA Optimization (example)…
+15° Clockwise Azimuth Offset
24. “Trial-and Error”
…is a fundamental method of solving problems…
Since we cannot possibly know the future, we trust
user’s behavior that repeats in time.
• Users will travel from home to work
• Users will stay at work
• Users will return from work to home
• Users will stay at home
• Users will spend time at “hotspots”
25. A Step by Step approach…
1. Defining the problematic cells
2. Engaging azimuth steering
3. Scanning for optimum heading
4. Evaluate best offset(s) in time
5. Adjusting best offset(s) in time
6. Improve performance
26. 1. Defining the problematic cells:
KPI’s filtered are DCR%, AFR%, MB, CM, TA
✓> 0,5% DCR% or AFR%
✓≥ Avg. Network Traffic (CM)
✓≥ Avg. Network Traffic (MB)
✓> 750m Cell Radii
27. Not any more…FIXED Azimuths?
2. Engaging azimuth steering:
Installing it is like installing an antenna
✓ It applies on any antenna… legacy or new
28. 3. Scanning for optimum heading:
Self-operated for 1 week, collecting data per 15’
SCAN
Azimuth
✓ BS3, Cell3
✓ BS4, Cell1
✓ BS7, Cell2
-15°, 0°, +15° Azimuth Offset Scan
29. 4. Evaluate best offset(s) in time:
Cell/Cluster KPI analysis per Azimuth Offset
Cluster GEO Area
Cell GEO Area
30. Cluster KPI’s Optimized
5. Adjusting best offset(s) in time:
Automatic azimuth re-adjustment when needed
Cell Azimuth Offset Adjusted
when (during time) the cell needs it
34. Call us to discuss:
• how we pin point your problematic cells
• how we scan azimuth
• how we locate best azimuth offset
• how we adjust azimuth planning
• how we can optimize your service level KPI’s
• how we can improve your network revenues