At present, the global information age has arrived, the total amount of data has exploded, and people's demand for data and information is increasing. The birth of LTE is to continuously optimize wireless communication technology to meet customers' higher requirements for wireless communication.
LTE is a long-term evolution of the UMTS technical standard formulated by the 3GPP organization, in 2004 The project was formally established and launched at the 3GPP Toronto meeting in December.
LTE is a wireless data communication technology standard. The current goal of LTE is to use new technologies and modulation methods to improve the data transmission capacity and data transmission speed of wireless networks, such as new digital signal processing (DSP) technologies, which were mostly proposed around 2000.
The long-term goal of LTE is to simplify and redesign the network architecture to make it an IP-based network, which will help reduce potential undesirable factors in the 3G transition.
LTE technology mainly has two mainstream modes, TDD and FDD, and the two modes have their own characteristics. Among them, FDD-LTE is widely used internationally, while TD-LTE is more common in my country.
The LTE (Long Term Evolution) project is an evolution of 3G, a transition between 3G and 4G technologies, and a global standard of 3.9G.
It has improved and enhanced the 3G air access technology, using OFDM and MIMO as the only standard for its wireless network evolution. It provides a peak rate of 100 Mbit/s for downlink and 50 Mbit/s for uplink under a 20MHz spectrum bandwidth, which improves the performance of cell-edge users, increases cell capacity, and reduces system delay.
In order to better understand LTE, we have listed 41 basic knowledge of LTE for your reference.
I AM SUDANESE,MASTER OF TELECOM FROM SUDAN UNEVERSITY ,THIS IS MY DOCUMENT I INVESTIGATE IN LTE WITH MORE THAN 50 REFERENCE , GOD BLESS US ,PLEASE FEEL FREE TO ASK ABOUT ANY THING IN THIS TOPIC
MY EMAIL khalidaam2015@hotmail,khalidaa@sudatel.sd
دعواتكم لى وللوالدين ولاهلى , الحمد لله فبنعمته تتم الصالحات اللهم احفظ الدول الاسلامية من كل كيد واغدق عليهم الرخاء
At present, the global information age has arrived, the total amount of data has exploded, and people's demand for data and information is increasing. The birth of LTE is to continuously optimize wireless communication technology to meet customers' higher requirements for wireless communication.
LTE is a long-term evolution of the UMTS technical standard formulated by the 3GPP organization, in 2004 The project was formally established and launched at the 3GPP Toronto meeting in December.
LTE is a wireless data communication technology standard. The current goal of LTE is to use new technologies and modulation methods to improve the data transmission capacity and data transmission speed of wireless networks, such as new digital signal processing (DSP) technologies, which were mostly proposed around 2000.
The long-term goal of LTE is to simplify and redesign the network architecture to make it an IP-based network, which will help reduce potential undesirable factors in the 3G transition.
LTE technology mainly has two mainstream modes, TDD and FDD, and the two modes have their own characteristics. Among them, FDD-LTE is widely used internationally, while TD-LTE is more common in my country.
The LTE (Long Term Evolution) project is an evolution of 3G, a transition between 3G and 4G technologies, and a global standard of 3.9G.
It has improved and enhanced the 3G air access technology, using OFDM and MIMO as the only standard for its wireless network evolution. It provides a peak rate of 100 Mbit/s for downlink and 50 Mbit/s for uplink under a 20MHz spectrum bandwidth, which improves the performance of cell-edge users, increases cell capacity, and reduces system delay.
In order to better understand LTE, we have listed 41 basic knowledge of LTE for your reference.
I AM SUDANESE,MASTER OF TELECOM FROM SUDAN UNEVERSITY ,THIS IS MY DOCUMENT I INVESTIGATE IN LTE WITH MORE THAN 50 REFERENCE , GOD BLESS US ,PLEASE FEEL FREE TO ASK ABOUT ANY THING IN THIS TOPIC
MY EMAIL khalidaam2015@hotmail,khalidaa@sudatel.sd
دعواتكم لى وللوالدين ولاهلى , الحمد لله فبنعمته تتم الصالحات اللهم احفظ الدول الاسلامية من كل كيد واغدق عليهم الرخاء
Andy sutton - Multi-RAT mobile backhaul for Het-Netshmatthews1
At our 5th Telecoms Evangelist meet up Andy Sutton of EE gave a fantastic presentation reviewing the latest trends and developments in mobile backhaul architecture, strategy and technology. Starting with a review of backhaul capacity, performance requirements and protocol architecture, the presentation initially focused on the macro cell layer before going on to discuss options for evolving towards a true multi-layered heterogeneous network. Take a look!
LTE is basically a transition from 3G to 4G mobile networks. This report covers various aspects related to telecommunication sector, LTE basics, working and its applications. Apart from this it also includes technologies such as MIMO, FREQUENCY and TIME DUPLEXING etc.
Prof. Andy Sutton: 5G RAN Architecture Evolution - Jan 20193G4G
This presentation explores the evolution of GSM, UMTS and LTE radio access network architectures before a detailed review of the RAN architecture options for 5G. The functional decomposition of the 5G radio access network presents the network designer with many challenges with regards placement of RU, DU and CU nodes, all of which are discussed. The presentation concludes with a review of BT UK plans for 5G launch with a fully distributed RAN in support of an EN-DC architecture.
Presented by Professor Andy Sutton CEng FIET, Principal Network Architect, Architecture & Strategy, BT Technology at IET 5G - the Advent conference on 30 January 2019 | IET London: Savoy Place
*** SHARED WITH PERMISSION ***
Objective is to include the brief insight on 5G network architecture and standard progress, Accumulated it from different paper/journal, vendor’s white paper and different blog.
White Paper: Dynamic TDD for LTE-a (eIMTA) and 5GEiko Seidel
LTE, which was originally designed with fixed FDD or TDD modes with little flexibility for varying the capacity split between uplink and downlink, is being augmented with features that allow for more flexible use of radio resources. One of these features is “enhanced Interference Mitigation and Traffic Adaptation” (eIMTA) which notably allows for very dynamic adaptation of the TDD pattern e.g. in response to varying capacity requirements in uplink and downlink. eIMTA was standardized in LTE-A Release 12 and eIMTA-like functionality is considered to be one of the key enablers for 5G technologies. The purpose of this paper therefore is to shed some light on eIMTA, its main characteristics and capabilities and to illustrate its behaviour by means of system-level simulations.
A FUTURE MOBILE PACKET CORE NETWORK BASED ON IP-IN-IP PROTOCOLIJCNCJournal
The current Evolved Packet Core (EPC) 4th generation (4G) mobile network architecture features complicated control plane protocols and requires expensive equipment. Data delivery in the mobile packet core is performed based on a centralized mobility anchor between eNode B (eNB) elements and the network gateways. The mobility anchor is performed based on General Packet Radio Service tunnelling protocol (GTP), which has numerous drawbacks, including high tunnelling overhead and suboptimal routing between mobile devices on the same network. To address these challenges, here we describe new mobile core architecture for future mobile networks. The proposed scheme is based on IP encapsulated within IP (IP-in-IP) for mobility management and data delivery. In this scheme, the core network functions via layer 3 switching (L3S), and data delivery is implemented based on IP-in-IP routing, thus eliminating the GTP tunnelling protocol. For handover between eNB elements located near to one another, we propose the creation of a tunnel that maintains data delivery to mobile devices until the new eNB element updates the route with the gateway, which prevents data packet loss during handover. For this, we propose Generic Routing Encapsulation (GRE) tunnelling protocol. We describe the results of numerical analyses and simulation results showing that the proposed network core architecture provides superior performance compared with the current 4G architecture in terms of handover delay, tunnelling overhead and total transmission delay.
The history of synchronisation in digital cellular networks3G4G
Presented by Prof. Andy Sutton, Principal Network Architect within BT Architecture and Strategy team in the CW (Cambridge Wireless) Heritage SIG (#CWHeritage) event 'Time for Telecoms' on 16 March 2018 at the Science Museum, London.
*** Shared with Permission ***
Telefónica views on the design, architecture, and technology of 4G/5G Open RA...DESMOND YUEN
This whitepaper is a blueprint for developing an Open RAN solution. It provides an overview of the main
technology elements that Telefónica is developing
in collaboration with selected partners in the Open
RAN ecosystem.
It describes the architectural elements, design
criteria, technology choices, and key chipsets
employed to build a complete portfolio of radio
units and baseband equipment capable of a full
4G/5G RAN rollout in any market of interest.
Cellular Connectivity: Changing the Landscape of the Cellular Backhaul Market...ST Engineering iDirect
The demand for connectivity is surging worldwide. Today more than ever, more people in more places are connecting for work, entertainment, social communications, and education. Increasingly, they’re using smartphones, tablets, and other easy-to-carry devices. And in many underdeveloped parts of the world, smartphones are often the only Internet access technology that’s both affordable and available.
As a result, mobile networks are poised to become the primary way in which we connect. According to the 2018 Ericsson Mobility Report, there will be 7.2 billion smartphone subscriptions by 2023. Total data traffic has surged by 400% from 2013 to today and is projected to explode another 500% by 2023.
Andy sutton - Multi-RAT mobile backhaul for Het-Netshmatthews1
At our 5th Telecoms Evangelist meet up Andy Sutton of EE gave a fantastic presentation reviewing the latest trends and developments in mobile backhaul architecture, strategy and technology. Starting with a review of backhaul capacity, performance requirements and protocol architecture, the presentation initially focused on the macro cell layer before going on to discuss options for evolving towards a true multi-layered heterogeneous network. Take a look!
LTE is basically a transition from 3G to 4G mobile networks. This report covers various aspects related to telecommunication sector, LTE basics, working and its applications. Apart from this it also includes technologies such as MIMO, FREQUENCY and TIME DUPLEXING etc.
Prof. Andy Sutton: 5G RAN Architecture Evolution - Jan 20193G4G
This presentation explores the evolution of GSM, UMTS and LTE radio access network architectures before a detailed review of the RAN architecture options for 5G. The functional decomposition of the 5G radio access network presents the network designer with many challenges with regards placement of RU, DU and CU nodes, all of which are discussed. The presentation concludes with a review of BT UK plans for 5G launch with a fully distributed RAN in support of an EN-DC architecture.
Presented by Professor Andy Sutton CEng FIET, Principal Network Architect, Architecture & Strategy, BT Technology at IET 5G - the Advent conference on 30 January 2019 | IET London: Savoy Place
*** SHARED WITH PERMISSION ***
Objective is to include the brief insight on 5G network architecture and standard progress, Accumulated it from different paper/journal, vendor’s white paper and different blog.
White Paper: Dynamic TDD for LTE-a (eIMTA) and 5GEiko Seidel
LTE, which was originally designed with fixed FDD or TDD modes with little flexibility for varying the capacity split between uplink and downlink, is being augmented with features that allow for more flexible use of radio resources. One of these features is “enhanced Interference Mitigation and Traffic Adaptation” (eIMTA) which notably allows for very dynamic adaptation of the TDD pattern e.g. in response to varying capacity requirements in uplink and downlink. eIMTA was standardized in LTE-A Release 12 and eIMTA-like functionality is considered to be one of the key enablers for 5G technologies. The purpose of this paper therefore is to shed some light on eIMTA, its main characteristics and capabilities and to illustrate its behaviour by means of system-level simulations.
A FUTURE MOBILE PACKET CORE NETWORK BASED ON IP-IN-IP PROTOCOLIJCNCJournal
The current Evolved Packet Core (EPC) 4th generation (4G) mobile network architecture features complicated control plane protocols and requires expensive equipment. Data delivery in the mobile packet core is performed based on a centralized mobility anchor between eNode B (eNB) elements and the network gateways. The mobility anchor is performed based on General Packet Radio Service tunnelling protocol (GTP), which has numerous drawbacks, including high tunnelling overhead and suboptimal routing between mobile devices on the same network. To address these challenges, here we describe new mobile core architecture for future mobile networks. The proposed scheme is based on IP encapsulated within IP (IP-in-IP) for mobility management and data delivery. In this scheme, the core network functions via layer 3 switching (L3S), and data delivery is implemented based on IP-in-IP routing, thus eliminating the GTP tunnelling protocol. For handover between eNB elements located near to one another, we propose the creation of a tunnel that maintains data delivery to mobile devices until the new eNB element updates the route with the gateway, which prevents data packet loss during handover. For this, we propose Generic Routing Encapsulation (GRE) tunnelling protocol. We describe the results of numerical analyses and simulation results showing that the proposed network core architecture provides superior performance compared with the current 4G architecture in terms of handover delay, tunnelling overhead and total transmission delay.
The history of synchronisation in digital cellular networks3G4G
Presented by Prof. Andy Sutton, Principal Network Architect within BT Architecture and Strategy team in the CW (Cambridge Wireless) Heritage SIG (#CWHeritage) event 'Time for Telecoms' on 16 March 2018 at the Science Museum, London.
*** Shared with Permission ***
Telefónica views on the design, architecture, and technology of 4G/5G Open RA...DESMOND YUEN
This whitepaper is a blueprint for developing an Open RAN solution. It provides an overview of the main
technology elements that Telefónica is developing
in collaboration with selected partners in the Open
RAN ecosystem.
It describes the architectural elements, design
criteria, technology choices, and key chipsets
employed to build a complete portfolio of radio
units and baseband equipment capable of a full
4G/5G RAN rollout in any market of interest.
Cellular Connectivity: Changing the Landscape of the Cellular Backhaul Market...ST Engineering iDirect
The demand for connectivity is surging worldwide. Today more than ever, more people in more places are connecting for work, entertainment, social communications, and education. Increasingly, they’re using smartphones, tablets, and other easy-to-carry devices. And in many underdeveloped parts of the world, smartphones are often the only Internet access technology that’s both affordable and available.
As a result, mobile networks are poised to become the primary way in which we connect. According to the 2018 Ericsson Mobility Report, there will be 7.2 billion smartphone subscriptions by 2023. Total data traffic has surged by 400% from 2013 to today and is projected to explode another 500% by 2023.
http://www.ericsson.com
Each decade since mobile communication was introduced in the 1980s, has brought with it a new generation of systems and technologies. The next evolution, 5G radio access, is set for commercialization around 2020, and will deliver 5G services in an environment that is shaping up to be a significant challenge.
The transport network for 5G is much more than just backhaul; it’s the critical backbone connecting the core network all the way to the service layer at the edge via the midhaul and fronthaul. For more details, please visit: https://www.fujitsu.com/us/products/network/products/
Interesting Whitepaper from #HCLTECH, though a bit old (2016) but good for beginners on 5G and introductory know-how about 5G start with IMT2020. Informative insights.
Cloud Radio Access Network (C-RAN) has emerged as a promising solution to meet the ever-growing capacity demand and reduce the cost of mobile network components. In such network, the mobile operator’s Remote Radio Head (RRH) and Base Band Unit (BBU) are often separated and the connection between them has very tight timing and latency requirements. To employ packet-based network for C-RAN fronthaul, the carried fronthaul traffic are needed to achieve the requirements of fronthaul streams. For this reason, the aim of this paper is focused on investigating and evaluating the feasibility of Integrated Hybrid Optical Network (IHON) networks for mobile fronthaul. TransPacket AS (www.transpacket.com) develops a fusion switching that efficiently serves both Guaranteed Service Transport (GST) traffic with absolute priority and packet switched Statistical Multiplexing (SM) best effort traffic. We verified how the leftover capacity of fusion node can be used to carry the low priority packets and how the GST traffic can have deterministic characteristics on a single wavelength by delaying it with Fixed Delay Line (FDL). For example, for L1GE SM =0.3 the added SM traffic increases the 10GE wavelength utilization up to 89% without any losses and with SM PLR=1E-03 up to 92% utilization. The simulated results and numerical analysis confirm that the PDV and PLR of GST traffic in Ethernet network meet the requirements of mobile fronthaul using CPRI. For Ethernet network, the number of nodes in the network limits the maximum separation distance between BBU and RRH (link length); for increasing the number of nodes, the link length decreases. Consequently, Radio over Ethernet (RoE) traffic should receive the priority and Quality of Service (QoS) HP can provide. On the other hand, Low Priority (LP) classes are not sensitive to QoS metrics and should be used for transporting time insensitive applications and services.
The 5G architecture standard has changed the communications landscape, and it is now punctuated by real
opportunities for satellite to play an integral role. Acting as a banner for all standardization technologies,
including Network Function Virtualization (NFV), Software-Defined Networking (SDN) and Metro Ethernet
Forum (MEF), the 5G architecture standard potentiates both satellite’s place in mainstream connectivity, and
full interoperability within the end-to-end 5G network.
Future European society and economy will strongly rely on 5G infrastructure.
The impact will go far beyond existing wireless access networks with the aim for communication services, reachable everywhere, all the time, and faster. 5G is an opportunity for the European ICT sector which is already well positioned in the global R&D race. 5G technologies will be adopted and deployed globally in alignment with developed and emerging markets’ needs.
We have seen all the mobile broadband technologies like 1G, 2G, 3G and most recent 4G and upcoming is 5G. And they were very successful and motivated by the need to meet the requirement of the mobile users.
DevOps and Testing slides at DASA ConnectKari Kakkonen
My and Rik Marselis slides at 30.5.2024 DASA Connect conference. We discuss about what is testing, then what is agile testing and finally what is Testing in DevOps. Finally we had lovely workshop with the participants trying to find out different ways to think about quality and testing in different parts of the DevOps infinity loop.
Essentials of Automations: Optimizing FME Workflows with ParametersSafe Software
Are you looking to streamline your workflows and boost your projects’ efficiency? Do you find yourself searching for ways to add flexibility and control over your FME workflows? If so, you’re in the right place.
Join us for an insightful dive into the world of FME parameters, a critical element in optimizing workflow efficiency. This webinar marks the beginning of our three-part “Essentials of Automation” series. This first webinar is designed to equip you with the knowledge and skills to utilize parameters effectively: enhancing the flexibility, maintainability, and user control of your FME projects.
Here’s what you’ll gain:
- Essentials of FME Parameters: Understand the pivotal role of parameters, including Reader/Writer, Transformer, User, and FME Flow categories. Discover how they are the key to unlocking automation and optimization within your workflows.
- Practical Applications in FME Form: Delve into key user parameter types including choice, connections, and file URLs. Allow users to control how a workflow runs, making your workflows more reusable. Learn to import values and deliver the best user experience for your workflows while enhancing accuracy.
- Optimization Strategies in FME Flow: Explore the creation and strategic deployment of parameters in FME Flow, including the use of deployment and geometry parameters, to maximize workflow efficiency.
- Pro Tips for Success: Gain insights on parameterizing connections and leveraging new features like Conditional Visibility for clarity and simplicity.
We’ll wrap up with a glimpse into future webinars, followed by a Q&A session to address your specific questions surrounding this topic.
Don’t miss this opportunity to elevate your FME expertise and drive your projects to new heights of efficiency.
Welocme to ViralQR, your best QR code generator.ViralQR
Welcome to ViralQR, your best QR code generator available on the market!
At ViralQR, we design static and dynamic QR codes. Our mission is to make business operations easier and customer engagement more powerful through the use of QR technology. Be it a small-scale business or a huge enterprise, our easy-to-use platform provides multiple choices that can be tailored according to your company's branding and marketing strategies.
Our Vision
We are here to make the process of creating QR codes easy and smooth, thus enhancing customer interaction and making business more fluid. We very strongly believe in the ability of QR codes to change the world for businesses in their interaction with customers and are set on making that technology accessible and usable far and wide.
Our Achievements
Ever since its inception, we have successfully served many clients by offering QR codes in their marketing, service delivery, and collection of feedback across various industries. Our platform has been recognized for its ease of use and amazing features, which helped a business to make QR codes.
Our Services
At ViralQR, here is a comprehensive suite of services that caters to your very needs:
Static QR Codes: Create free static QR codes. These QR codes are able to store significant information such as URLs, vCards, plain text, emails and SMS, Wi-Fi credentials, and Bitcoin addresses.
Dynamic QR codes: These also have all the advanced features but are subscription-based. They can directly link to PDF files, images, micro-landing pages, social accounts, review forms, business pages, and applications. In addition, they can be branded with CTAs, frames, patterns, colors, and logos to enhance your branding.
Pricing and Packages
Additionally, there is a 14-day free offer to ViralQR, which is an exceptional opportunity for new users to take a feel of this platform. One can easily subscribe from there and experience the full dynamic of using QR codes. The subscription plans are not only meant for business; they are priced very flexibly so that literally every business could afford to benefit from our service.
Why choose us?
ViralQR will provide services for marketing, advertising, catering, retail, and the like. The QR codes can be posted on fliers, packaging, merchandise, and banners, as well as to substitute for cash and cards in a restaurant or coffee shop. With QR codes integrated into your business, improve customer engagement and streamline operations.
Comprehensive Analytics
Subscribers of ViralQR receive detailed analytics and tracking tools in light of having a view of the core values of QR code performance. Our analytics dashboard shows aggregate views and unique views, as well as detailed information about each impression, including time, device, browser, and estimated location by city and country.
So, thank you for choosing ViralQR; we have an offer of nothing but the best in terms of QR code services to meet business diversity!
UiPath Test Automation using UiPath Test Suite series, part 4DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 4. In this session, we will cover Test Manager overview along with SAP heatmap.
The UiPath Test Manager overview with SAP heatmap webinar offers a concise yet comprehensive exploration of the role of a Test Manager within SAP environments, coupled with the utilization of heatmaps for effective testing strategies.
Participants will gain insights into the responsibilities, challenges, and best practices associated with test management in SAP projects. Additionally, the webinar delves into the significance of heatmaps as a visual aid for identifying testing priorities, areas of risk, and resource allocation within SAP landscapes. Through this session, attendees can expect to enhance their understanding of test management principles while learning practical approaches to optimize testing processes in SAP environments using heatmap visualization techniques
What will you get from this session?
1. Insights into SAP testing best practices
2. Heatmap utilization for testing
3. Optimization of testing processes
4. Demo
Topics covered:
Execution from the test manager
Orchestrator execution result
Defect reporting
SAP heatmap example with demo
Speaker:
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
Le nuove frontiere dell'AI nell'RPA con UiPath Autopilot™UiPathCommunity
In questo evento online gratuito, organizzato dalla Community Italiana di UiPath, potrai esplorare le nuove funzionalità di Autopilot, il tool che integra l'Intelligenza Artificiale nei processi di sviluppo e utilizzo delle Automazioni.
📕 Vedremo insieme alcuni esempi dell'utilizzo di Autopilot in diversi tool della Suite UiPath:
Autopilot per Studio Web
Autopilot per Studio
Autopilot per Apps
Clipboard AI
GenAI applicata alla Document Understanding
👨🏫👨💻 Speakers:
Stefano Negro, UiPath MVPx3, RPA Tech Lead @ BSP Consultant
Flavio Martinelli, UiPath MVP 2023, Technical Account Manager @UiPath
Andrei Tasca, RPA Solutions Team Lead @NTT Data
UiPath Test Automation using UiPath Test Suite series, part 3DianaGray10
Welcome to UiPath Test Automation using UiPath Test Suite series part 3. In this session, we will cover desktop automation along with UI automation.
Topics covered:
UI automation Introduction,
UI automation Sample
Desktop automation flow
Pradeep Chinnala, Senior Consultant Automation Developer @WonderBotz and UiPath MVP
Deepak Rai, Automation Practice Lead, Boundaryless Group and UiPath MVP
The Art of the Pitch: WordPress Relationships and SalesLaura Byrne
Clients don’t know what they don’t know. What web solutions are right for them? How does WordPress come into the picture? How do you make sure you understand scope and timeline? What do you do if sometime changes?
All these questions and more will be explored as we talk about matching clients’ needs with what your agency offers without pulling teeth or pulling your hair out. Practical tips, and strategies for successful relationship building that leads to closing the deal.
GraphRAG is All You need? LLM & Knowledge GraphGuy Korland
Guy Korland, CEO and Co-founder of FalkorDB, will review two articles on the integration of language models with knowledge graphs.
1. Unifying Large Language Models and Knowledge Graphs: A Roadmap.
https://arxiv.org/abs/2306.08302
2. Microsoft Research's GraphRAG paper and a review paper on various uses of knowledge graphs:
https://www.microsoft.com/en-us/research/blog/graphrag-unlocking-llm-discovery-on-narrative-private-data/
A tale of scale & speed: How the US Navy is enabling software delivery from l...sonjaschweigert1
Rapid and secure feature delivery is a goal across every application team and every branch of the DoD. The Navy’s DevSecOps platform, Party Barge, has achieved:
- Reduction in onboarding time from 5 weeks to 1 day
- Improved developer experience and productivity through actionable findings and reduction of false positives
- Maintenance of superior security standards and inherent policy enforcement with Authorization to Operate (ATO)
Development teams can ship efficiently and ensure applications are cyber ready for Navy Authorizing Officials (AOs). In this webinar, Sigma Defense and Anchore will give attendees a look behind the scenes and demo secure pipeline automation and security artifacts that speed up application ATO and time to production.
We will cover:
- How to remove silos in DevSecOps
- How to build efficient development pipeline roles and component templates
- How to deliver security artifacts that matter for ATO’s (SBOMs, vulnerability reports, and policy evidence)
- How to streamline operations with automated policy checks on container images
SAP Sapphire 2024 - ASUG301 building better apps with SAP Fiori.pdfPeter Spielvogel
Building better applications for business users with SAP Fiori.
• What is SAP Fiori and why it matters to you
• How a better user experience drives measurable business benefits
• How to get started with SAP Fiori today
• How SAP Fiori elements accelerates application development
• How SAP Build Code includes SAP Fiori tools and other generative artificial intelligence capabilities
• How SAP Fiori paves the way for using AI in SAP apps
Epistemic Interaction - tuning interfaces to provide information for AI supportAlan Dix
Paper presented at SYNERGY workshop at AVI 2024, Genoa, Italy. 3rd June 2024
https://alandix.com/academic/papers/synergy2024-epistemic/
As machine learning integrates deeper into human-computer interactions, the concept of epistemic interaction emerges, aiming to refine these interactions to enhance system adaptability. This approach encourages minor, intentional adjustments in user behaviour to enrich the data available for system learning. This paper introduces epistemic interaction within the context of human-system communication, illustrating how deliberate interaction design can improve system understanding and adaptation. Through concrete examples, we demonstrate the potential of epistemic interaction to significantly advance human-computer interaction by leveraging intuitive human communication strategies to inform system design and functionality, offering a novel pathway for enriching user-system engagements.
Epistemic Interaction - tuning interfaces to provide information for AI support
Gsma mobile backhaul an overview - future networks
1. 1/30/2021 GSMA | Mobile Backhaul: An Overview - Future Networks
https://www.gsma.com/futurenetworks/wiki/mobile-backhaul-an-overview/ 1/21
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2. 1/30/2021 GSMA | Mobile Backhaul: An Overview - Future Networks
https://www.gsma.com/futurenetworks/wiki/mobile-backhaul-an-overview/ 2/21
Last updated: June 19, 2019
View Case Studies
1. Introduction
What is Mobile Backhaul?
Mobile backhaul refers to the transport network that connects the core
network and the RAN (Radio Access Network) of the mobile network.
Recently, the introduction of small cells has given rise to the concept of
fronthaul, which is a transport network that connects the macrocell to the
small cells. Whilst mobile backhaul and fronthaul are different concept, the
term mobile backhaul is generally used to encompass both concepts.
Furthermore, innovations to reduce demand on mobile backhaul
sometimes involve architectural changes in the antenna (also referred to as
radio unit in 4G) and the controller (also referred to as digital unit in 4G).
Therefore, the components labelled in red in the figure below will be
covered for backhaul demand case studies within the GSMA Future
Networks Network Economics.
3. 1/30/2021 GSMA | Mobile Backhaul: An Overview - Future Networks
https://www.gsma.com/futurenetworks/wiki/mobile-backhaul-an-overview/ 3/21
Figure 1. Mobile network and the scope of mobile backhaul
Success of LTE and Growing Importance of
Mobile Backhaul
Wireless and fixed-line backhaul infrastructure is an essential component of
the mobile telecommunications network. Mobile networks are ubiquitous
and support a mix of voice, video, text and data traffic originating from and
terminating to mobile devices. All of this traffic must be conveyed between
the mobile cellular base stations and the core network. The success of 4G
Long-Term Evolution (LTE) has placed even greater challenges on mobile
operators as they strive for more network capacity, latency reduction, and
the need to deliver an enhanced user experience. Notwithstanding the
4. 1/30/2021 GSMA | Mobile Backhaul: An Overview - Future Networks
https://www.gsma.com/futurenetworks/wiki/mobile-backhaul-an-overview/ 4/21
success of LTE (as of May 2019, there were 729 LTE operators in more than
221 countries), there are also a number of new challenges on the horizon
that will impact on the MNO’s backhaul network infrastructure.
In the era of 5G, where a network will be densified and more stringent
requirement will be imposed, mobile backhaul will become even more
important. Given the limitations governed by laws of physics, the mobile
backhaul will add much more pressure on mobile operators’ cost. Whilst
mobile operators will be able to unlock new business opportunities with
5G, the costs need to be optimised for the operators to sustainably reap
the benefits of 5G. These are described in more detail in the next section.
2. Challenges in Mobile
Backhaul
There are a number of market trends that result in new challenges and
requirements that must be met by the backhaul infrastructure of MNO
networks.
Evolution of LTE
5. 1/30/2021 GSMA | Mobile Backhaul: An Overview - Future Networks
https://www.gsma.com/futurenetworks/wiki/mobile-backhaul-an-overview/ 5/21
There are a number of technical innovations occurring on LTE, which is
known as LTE-Advanced Pro or 4.5G which enable enhancements such as
improved peak bandwidth and greater energy efficiency for IoT
connections. The peak bandwidth of 4.5G is around 1Gbps which is 8-10x
higher than standard LTE, and will enable (inter alia) support of video
traffic at 4K resolution to mobile devices.
Emergence of 5G
By the end of 2018, there have already been some 5G deployments for
FWA (Fixed Wireless Access) but the first mainstream 5G mobile services
are expected to commence in 2020. In early 2018, there were 113 operators
in 56 countries doing 5G trials and it is anticipated that by 2024, 50
countries will have in-service 5G networks. The 5G network will comprise
both NR (New Radio) as well as a new 5G Core Network (5GC). The advent
of NR offers a leap in bandwidth speeds in comparison to 4G via the
utilisation of higher frequency spectrum. There will be 3 separate 5G bands
initially, namely Sub-1 GHz, 1-6 GHz and above 6GHz. It is expected
spectrum bands above 24GHz will be agreed upon at the WRC in 2019,
which includes 26GHz and 40GHz bands. The higher frequencies enable
wider channel bandwidths at the access but also result in smaller cell sizes.
Both have implications for backhaul.
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5G Network Slicing
5G Network Slicing. One of the key features of the 5G Network is the
concept of “network slicing” whereby the physical network infrastructure
can be partitioned into bespoke logical networks (“slices”) in the RAN and
5G core which are targeted to the needs of a specific application or use
case. Slicing will also impact on the backhaul network and will also
facilitate sharing of infrastructure to optimise cost (for more information
on infrastructure sharing, see
here
).
Subscriber Growth
At the end of 2017, subscriber numbers stood at over 8.1 billion with an
annual growth rate of 5.4% year on year. It is estimated that by 2025, the
number of subscriptions will be 9.8 billion. In terms of different RAN
technologies, LTE subscriptions were at 2.86 billion in 2017 (35.2% of the
overall total) and will be at 4.24 billion (43.3% of the overall total) by 2025
whilst 5G subscriptions will be around 850 million by 2025. Furthermore,
IoT devices (LTE-M and NB-IOT) will grow from 376 million to 4.2 billion in
the 2017-25 timeframe. Therefore, backhaul strategy/evolution must cope
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with both an increase in subscriptions as well as a large number of those
subscriptions being “high bandwidth” users.
Mobile data traffic growth
The increasing subscriber total plus increased access bandwidth usage of
those subscribers results in mobile data traffic increasing at a rate of 28.9%
CAGR to reach over 1300 Exabytes [1300 x 1018
bytes] by 2025. By 2025,
4G and 5G subscribers will represent 55% of subscriptions but will generate
91% of the traffic. There will also be a marked shift in the type of traffic
being carried with video streaming increasing from 81 Exabytes (which is
just under 50% of total traffic) to 910 Exabytes (which is 70% of total
mobile traffic). Per-user traffic per month is expected to grow from 1.7
GBytes to 11.3 GBytes between 2017 and 2025. In some markets (e.g.
Korea and Japan), it is noted that some smartphone users were already
generating 12GBytes per month in 2017.
Stringent latency requirements
Both 5G mission-critical applications and increased video streaming will
result in more stringent end-end latency requirements and impact on the
backhaul latency budget. For example, an end-end latency cap of 10ms
implies a latency across the backhaul that is <1ms – which means that only
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fibre optic and microwave links will be able to support such low latency
requirements. If higher latency backhaul links are deployed (e.g. satellite
links), then such backhaul would only carry 2G/3G and non-latency
sensitive LTE services.
Network densification
The increased demand for mobile broadband results in the number of
macrocell sites being estimated to grow globally from 11.1 million to 14.1
million. The new macrocells include both 4G and 5G technologies. This
results in extra traffic to backhaul as well as additional challenges due to
the smaller cell size for 5G NR.
Furthermore, the growth of LTE traffic resulted in MNOs being increasingly
reliant on small cell site deployments. Small cells will be even more
essential for 5G. Small cells can be deployed outdoors or indoors and
include low power microcells, femtocells and picocells. They can be
deployed on private or public infrastructure in the urban environment (e.g.
rooftops, street poles etc.). In the period 2017-25, the number of small cells
is expected to increase globally from 0.71 million to 4.3 million. From a
backhaul point of view, there is a need to be able to carry traffic from
many more cell sites in a scalable, efficient and economic manner.
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3. Technology Choices for
Mobile Backhaul
There are a number of technical solutions used by Mobile operators for
backhaul, including both wireline and wireless solutions.
Copper-line
Copper-based backhaul was the primary backhaul technology for 2G/3G.
At the heart of copper-based backhaul is the T1/E1 protocol, which
supported 1.5 Mbps to 2 Mbps. This bandwidth can be boosted by using
DSL over the copper pair as well as so-called copper-bonding (i.e. multiple
copper pairs are bonded together). For example, having up to 12 bonded
pairs can provide over 150 Mbps downlink capacity over 1.5 km.
Nevertheless, copper lines do not scale easily to provide adequate
bandwidth at a distance above a few hundred meters to support LTE
broadband usage and 5G traffic scenarios will prove particularly
challenging for mobile service providers. In bonded configurations, as
monthly costs increase linearly with bandwidth requirements. Therefore, as
bandwidth requirements become more onerous, copper-based backhaul
has become an infrequently used solution and operators are increasingly
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preferring fibre-optic where available (e.g.. in city centres). For all that,
DSL is still an option for mobile backhaul for indoor small cells, in-building
HetNets, and public venue small cell networks.
Fibre-Optic
This technology is the mainstay wired backhaul in MNO networks and
second overall only to microwave backhaul. Even though fibre has
significant inherent bandwidth carrying capability, several additional
techniques can be used to offset any bandwidth constraints and essentially
rendering the fibre assets future-proof. These techniques include
Wavelength Division Multiplexing (WDM) technology which enables
multiple optical signals to be conveyed in parallel by carrying each signal
on a different wavelength or colour of light. WDM can be divided into
Coarse WDM (CDWM) or Dense WDM (DWDM). CWDM provides 8
channels using 8 wavelengths, while DWDM uses close channel spacing to
deliver even more throughput per fibre. Modern systems can handle up to
160 signals, each with a bandwidth of 10 Gbps for a total theoretical
capacity of 1.6 Tbps per fibre. The traffic generated by LTE has accelerated
the demand for Fiber to the Tower (FTTT) and has required Mobile
Network Operators (MNOs) to upgrade many aspects of their backhaul
networks to fibre-based Carrier Ethernet. The main limitations of fibre are
the cost and logistics of deploying fibre (ducts etc.), although the cost of
fibre has been decreasing over the last few years (e.g. it now costs circa
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$70K/km whereas 5 years ago it cost circa $100K/km). Nonetheless, it can
still take several months to provision a cell site with fibre optic backhaul.
Fibre backhaul was used for 26% of global macrocell backhaul links in 2017,
growing to just under 40% by 2025. Fibre will also be the main choice
Wireless backhaul (microwave)
Despite fibre being the preferred choice for MNOs for 4G/5G backhaul,
microwave backhaul is the most used technology due to a combination of
its capability and relative ease of deployment (i.e. no need for
trenches/ducting) making it a low-cost option that can be deployed in a
matter of days. Most MNOs rely heavily rely on microwave backhaul
solutions in the 7 GHz to 40 GHz bands, in addition to higher microwave
bands such as V-band (60 GHz) and the E-band (70/80 GHz). Backhaul
links using the V-band or the E-band are well suited to supporting 5G due
to their 10 Gbps to 25 Gbps data throughput capabilities. Microwave can
be used in LOS or NLOS mode which makes it ideal to be used in a chain,
mesh or ring topologies to enable resilience and/or reach. The main
drawback is that microwave backhaul requires a licence, apart from the V-
band that is unlicensed and to a lesser extent the E-band which is lightly
licenced. It is also possible to combine a low-frequency microwave band
with a high-frequency microwave band to achieve high capacity over long
distances with enhanced availability.
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LOS vs. NLOS
Historically, most wireless backhaul links have been LOS (Line of Sight) due
to the high frequencies being used, as well as the narrow beam widths
used. However, over the past 10 years, NLOS (Non-Line of Sight) has
become a viable solution that should prove particularly advantageous with
a large number of clusters of small cells that MNOs are expected to deploy
over the next few years.
LOS backhaul has the advantage of using a highly directed beam with little
fading or multi-path dispersion and enables efficient use of spectrum as
multiple transceivers can be located within a few feet of each other and
use the same frequency to transmit different data streams. On the other
hand, it may be difficult to always have an unobstructed path in certain
scenarios (e.g. trees, buildings in the way) and the transceiver pair need
precise alignment. In the latter case, this can be impacted by “pole tilt”
where the alignment is spoiled by movement caused by the wind and a
particular concern for small cells. The pole tilt issue gets worse as
frequencies increase due to the beam narrowing. For large numbers of
small cells (e.g. in a metropolitan hot spot), the cost of backhaul can
increase quickly if a number of links are daisy chained together.
NLOS backhaul is much more “plug and play” and so take less time with
less skilled labour to set up. NLOS backhaul OFDM technology
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(Orthogonal Frequency Division Multiplexing) to relay information back to
a central base station. NLOS backhaul needs only to be within a range of
the receiver unit with OFDM providing a level of tolerance to multi-path
fading not possible with LOS. There is a limit to how many small cells can
be blanketed by a single NLOS backhaul to ensure each cell has a given
QoS as all of the bandwidth is shared between the multiple base stations
covered by the central unit. This bandwidth sharing is a disadvantage in
that there is an upper limit on the bandwidth available to each base station
and calculations need to be re-done if further base stations are added.
Frequency planning also needed to avoid interference as the NLOS
frequency ranges can also be used for access.
Satellite backhaul
Satellite Backhaul is a niche solution for MNOs and used in fringe areas
(e.g. remote rural areas) and sometimes as an emergency/temporary
measure (e.g. a disaster area or in place of a microwave link whilst waiting
for licence approval). This backhaul is used in developing markets and as a
complementary role in developed markets. The technology can deliver
150Mbps/10Mbps (downlink/.uplink). However, latency is a challenge as
there a round trip delay of circa 500-600ms for a geostationary satellite.
LEO (Low Earth Orbit) satellites have tried to address the latency issue (i.e.
using a much lower orbit of 1500km versus 36000km and resulting in a
one way trip of circa 50ms). However, LEO satellites are not geostationary
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and thus there is sometimes a need to route traffic via multiple satellites.
LEO satellites are also relatively immature technology. Fees are also usage
based on satellite links and means that such links need to be monitored
and controlled.
WiFi backhaul
There is marginal (<1%) use of this technology for macrocell backhaul in
some emerging markets. The unlicensed nature of the technology
combined with the growing interference from increasing public and private
WLANs plus poor transmission ranges severely limits its deployment.
Market share and trends
In terms of market share and trends, wireless backhaul (microwave) in the
traditional (7-40GHz) range was responsible for nearly 57% of macrocell
backhaul links in 2017, diminishing to 45% of macro-cell links by 2025.
Microwave links in the 41-100GHz will double from 3.2% to 6.1% in the same
period. The shorter range of the latter (<3km) is offset by their increased
data throughput and thus make it a suitable technology in urban areas. For
small cells, traditional microwave was used for 35.2% of links in 2017
diminishing to 21% in 2025, whilst microwave links in the 41-100 GHz range
will grow from 10.4% to 13.1% in the same period.
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Fibre based backhaul was responsible for 25.6% of macrocell links in 2017,
rising to 39.6% by 2025. Fibre is the market leader for small cell backhaul
with 43.2% of the market on 2017, rising to 56.1% in 2025. DSL based
backhaul was used for 3.6% of macrocell backhaul in 2017 and this share is
expected to decline over the next few years. Satellite comprised 1.9% of
backhaul links in 2017 and this will diminish to 1.4% in 2025 (although the
overall number will increase), reflecting its niche/complimentary role.
These trends are summarized in the figure below.
Figure 2. Backhaul technology trend and forecast (Source: ABI Research)
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Cost comparison of selected technologies
for mobile backhaul
While fibre promises the best performance among the technologies
considered, economics can be challenging for the mobile operator to
deploy. As shown in the figure below, the economics of fibre depends on
how much civil engineering work is required (i.e. duct reuse or 100%
trenching) along with the effect of regulation. For most sub-urban
scenarios (other than 90% duct reuse), achieving 1Gbps with microwave is
more economic while fibre is more economic for urban scenarios except
for the case of own build with 100% trenching. The comparison also
indicates that sharing of backhaul infrastructure (i.e. leasing or duct reuse)
can lead to better economics (for more information on infrastructure
sharing, see
here
). It can be deduced that wireless solutions can be used to reduce the cost
of mobile backhaul as it reduces necessary civil engineering work.
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Figure 3. Backhaul economics per site: Fibre vs. IP microwave
(Source: OFCOM, BT Openreach, Bernstein)
Deployment scenarios are complex and diverse and mobile operators will
need a mixture of wired and wireless solutions to provide the optimum
solution for a given deployment scenario.
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4. Alternative Architectures
for Mobile Backhaul
Optimisation
MEC (Multi-access edge computing)
MEC (Multi-access edge computing) is where computing and intelligence
capabilities that were mostly centralized in the core network are provided
at the edge of the access network. MEC enables high bandwidth and ultra-
low latency access to cloud computing/IT services at the edge to be
accessed by applications developers and content providers.
MEC, while incurring a cost to implement core functions at the edge, can
provide opportunities to optimise backhaul demand via caching and/or
local breakout. Caching reduces the load on mobile backhaul and enhances
the customer experience by storing frequently accessed contents in the
edge network. Customers can access the contents at a lower latency (with
less distance for signal to travel) and backhaul demand is reduced as there
is no need to reach further to the external network to obtain the contents.
Local breakout also enables the mobile backhaul to be optimised as the
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contents do not need to travel to the core network and then to the
internet. The caveat with local breakout is that the transport network to
connect the edge to the internet needs to be in place and therefore won’t
optimise cost in certain scenarios.
Cloud RAN
Cloud RAN is where some layers of radio access network are centralized to
an edge site rather than at the cell site, which allows some (or all) of the
processing capabilities to be focused at the edge site reducing the
complexities at the cell site. This architecture is suitable in the small cell
era, where only a little space and cost constraint is affordable at the cell
site. While the architecture may not be suitable for traditional macrocell
base stations as they would need to process significant load of signal
transmitted from/received by various radio elements, heterogeneous
networks with many small cells would benefit from this architecture.
As shown in the figure below, Cloud RAN in its two forms (low-level and
high-level splits) significantly reduces complexities and capabilities at the
cell site to be concentrated in the edge site. The low-level split is where
only the physical layer is processed at the edge site while all the
electronics are concentrated in the edge site. This architecture allows easy
installation and very low complexity at the cell site but comes at a higher
fronthaul cost as baseband signals would need to be transferred. On the
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other hand, high-level split brings relatively less fronthaul cost but comes
with more complexity at the cell site than low-level split.
Figure 4. Cloud RAN Architecture
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