Management of networks that provide QoS guarantees

This paper presents the results of a case study to the feasibility of introducing ATM SVCs into the Dutch SURFnet research ATM network. The key issue that is examined are the implications of the Quality of Service support of ATM. QoS guarantees for a connection require a portion of the finite ATM network resource. Once all network resource is allocated to connections no new connections will be accepted, and users will start experiencing denial of service. The key research question here is if and how this denial of service probability can be kept to a minimum

C-Band Airport Surface Communications System Standards Development, Phase I

This document is being provided as part of ITT's NASA Glenn Research Center Aerospace Communication Systems Technical Support (ACSTS) contract NNC05CA85C, Task 7: "New ATM Requirements--Future Communications, C-Band and L-Band Communications Standard Development." The proposed future C-band (5091- to 5150-MHz) airport surface communication system, referred to as the Aeronautical Mobile Airport Communications System (AeroMACS), is anticipated to increase overall air-to-ground data communications systems capacity by using a new spectrum (i.e., not very high frequency (VHF)). Although some critical services could be supported, AeroMACS will also target noncritical services, such as weather advisory and aeronautical information services as part of an airborne System Wide Information Management (SWIM) program. AeroMACS is to be designed and implemented in a manner that will not disrupt other services operating in the C-band. This report defines the AeroMACS concepts of use, high-level system requirements, and architecture; the performance of supporting system analyses; the development of AeroMACS test and demonstration plans; and the establishment of an operational AeroMACS capability in support of C-band aeronautical data communications standards to be advanced in both international (International Civil Aviation Organization, ICAO) and national (RTCA) forums. This includes the development of system parameter profile recommendations for AeroMACS based on existing Institute of Electrical and Electronics Engineering (IEEE) 802.16e- 2009 standard

Space Traffic Management with a NASA UAS Traffic Management (UTM) Inspired Architecture

Space is becoming increasingly congested as the number of on-orbit satellites and debris objects continues to grow. Space traffic management (STM) is critical for ensuring that the expanding orbital population operates safely and efficiently, avoiding collisions and radio-frequency interference while still facilitating widespread space operations. Recent events such as the FCC approval of SpaceXs ~12,000 satellite constellation, the signing of Space Policy Directive 3 (which moves Space Situational Awareness responsibilities away from the Department of Defense and to a civil agency), and the growth in rideshare and small launch vehicles illustrate the rapidly changing nature of this domain. This paper will describe the concept of operations (ConOps) for a civilian STM research initiative, which has been developed from previous NASA work to enable safe operation of small unmanned aircraft systems. The STM ConOps proposes an architecture to enable efficient data sharing and coordination between participants to facilitate safe spaceflight operations. It is designed to utilize and promote the emerging field of commercial STM services, as a complement to existing government-provided STM services. The concept envisions a phased evolution that would gradually integrate additional capabilities, proposing a first phase architecture and tentative plans for a broader system. Work towards developing an STM research and prototyping platform is also discussed

Integration of UTM and U-Space on Norwegian continental shelf

In this master thesis, we present an overview of the U-Space and Regulations in Europe, while also taking into consideration the progression of the integration of both parts in Norwegian airspace over the Norwegian continental shelf. This thesis is mainly separated into three parts. The first part is taking a look into the European Union's roadmap/plan for establishing an Unmanned Aircraft System Traffic Management (UTM) and how they plan to develop their system into a single European sky. The end goal is that essentially every operator of a drone can do so all over Europe without having any issues with crossing borders or different regulations. The second part of the thesis is dedicated to a detailed insight into the technical side of a UTM, the different layers, examples of which systems are the most relevant to be utilized on the Norwegian continental shelf. The third part of this thesis is dedicated to looking at the regulatory side of things, in regards of the UTM system in itself, different factors of drone operations, requirements for every part of an operation. In addition, discussing and concluding about everything we have been though in the thesis. Additionally, there are uses cases where everything comes together to see how it would work in practise and in certain scenarios. In the final part of the thesis the previous parts of the project will be discussed, as well as drawing final conclusions to the project

Dimensioning and optimizing mobile networks with performance management system

Tämän diplomityön tarkoituksena oli tutkia suorituskyvyn hallintajärjestelmän käyttöä mobiiliverkkojen mitoituksen ja optimoinnin apuna. Työssä käydään suurpiirteisesti läpi tärkeimmät radioteknologiat ja niiden vaatimukset, sekä erilaiset palvelut, joita ne mahdollistavat. Käsiteltäviä radioteknologioita ovat GSM, GRPS, EDGE, UMTS, HSPA ja pintaa raapaistaan myös seuraavan sukupolven radioteknologioiden ympäriltä. Lisäksi käydään läpi tärkeimmät liityntäverkon siirtoteknologit, eli TDM, ATM, Ethernet, IP ja MPLS, ja selvitetään, miten niissä voidaan välittää palvelunlaatua sekä mitä käyttö- ja kunnossapitomenetelmiä ne mahdollistavat. Itse suorituskyvyn hallinta liittyy olennaisena osana verkonhallintaprosessiin virheen hallinnan sekä muiden OAM-menetelmien ohella. Suorituskykykyselyiden tuloksena voidaan laskea erilaisia suorituskykyindikaattoreita, joita voidaan käyttää erilaisiin verkonhallinnan tarpeisiin. Työssä tutkitaan erityisesti, millaisia suorituskykymittauksia liityntäverkoissa kannattaisi tehdä ja etenkin missä verkon osissa niistä voisi olla hyötyä. Työssä käydään läpi myös erilaisten suorituskyvyn hallintajärjestelmien integraatiota, jota monitasoisissa usean valmistajan verkoissa usein saatetaan tarvita. Itse mitoitus- ja optimointiprosessin yhteydessä selvitetään nimenomaan suorituskyvyn hallintajärjestelmän käyttöä liityntäverkoissa. Samalla selvitetään, mitkä mitoitus- ja optimointiratkaisut saattaisivat sopia liityntäverkkoihin. Valitettavasti työssä esitetään erilaisia mitoitus- ja optimointimenetelmiä varsin suppeasti. Tähän on suurimpana syynä se, ettei operaattorien keskuudessa olla menetelmiä juurikaan käytetty. Näihin päiviin asti operaattoreille on riittänyt pelkästään kapasiteetin lisääminen, mutta uusien ja nopeampien radioteknologioiden myötä se ei tule enää riittämään. Toivottavasti tulevaisuudessa tulemmekin näkemään pitkälle kehittyneitä mitoitus- ja optimointiratkaisuja pitkälle kehittyneiden verkon- ja suorituskyvynhallintajärjestelmien ohella.The purpose of this master's thesis was to investigate the dimensioning and optimizing of the mobile networks with a performance management system. The thesis discusses at the general level the most important radio technologies, their requirements and different services they provide. The radio technologies studied are GSM, GPRS, EDGE, UTMS, HSPA, and the next generation technologies. Additionally, the most important access transport technologies have been discussed; including TDM, ATM, Ethernet, IP and MPLS, and their abilities to deliver quality of service and what operation and maintenance methods they provide. Performance management system is a major component in the network management process, along with fault management and other OAM methods. Various performance indicators can be calculated from the performance queries, and they can be used for the needs of network management. The thesis examines in particular, what kind of performance measurements should be done in the access networks, focusing on what network segments receive the most benefit from it. Also, the thesis studies the implementation of different performance management systems integration, as it is often needed in multi vendor hierarchical networks. The use of performance management systems in access networks is sorted with the dimensioning and optimizing process to discover, what kind of dimensioning and optimizing solutions would fit in the access networks. Unfortunately, there are relatively few solutions in the thesis, because operators have not yet implemented any such methods. To this date, simply adding more capacity has been enough for operators. However, combined with new and faster radio technologies it will no longer be sufficient anymore. Hopefully, in the future we will see highly sophisticated dimensioning and optimizing solutions built into performance management systems

Distributed Space Traffic Management Solutions with Emerging New Space Industry

Day-to-day services, from weather forecast to logistics, rely on space-based infrastructures whose integrity is crucial to stakeholders and end-users worldwide. Current trends point towards congestion of the near-Earth space environment increasing at a rate greater than existing systems support, and thus demand novel cost-efficient approaches to traffic detection, characterization, tracking, and management to ensure space remains a safe, integral part of societies and economies worldwide. Whereas machine-learning (ML) and artificial intelligence (AI) have been extensively proposed to address congestion and alleviate big-data problems of the future, little has been done so far to tackle the need for transnational coordination and conflict-resolution in the context of space traffic management (STM). In STM, there is an ever-growing need for distributing information and coordinating actions (e.g., avoidance manoeuvres) to reduce the operational costs borne by individual entities and to decrease the latencies of actionable responses taken upon the detection of hazardous conditions by one-to-two orders of magnitude. However, these needs are not exclusive to STM, as evidenced by the widespread adoption of solutions to distributing, coordinating, and automating actions in other industries such as air traffic management (ATM), where a short-range airborne collision avoidance system (ACAS) automatically coordinates evasive manoeuvres whenever a conjunction is detected. Within this context, this paper aims at establishing a roadmap of promising technologies (e.g., blockchain), protocols and processes that could be adapted from different domains (railway, automotive, aerial, and maritime) to build an integrated traffic coordination and communication architecture to simplify and harmonise stakeholders’ satellite operations. This paper is organised into seven sections. First, Section 1 introduces the problem of STM, highlighting its complexity. Following this introduction, Section 2 discusses needs and requirements of various stakeholders such as commercial operators, space situational awareness (SSA) service providers, launch-service providers, satellite and constellation owners, governmental agencies, regulators, and insurance companies. Then, Section 3 addresses existing gaps and challenges in STM, focusing on globally coordinated approaches. Next, Section 4 reviews technologies for distributed, secure, and persistent communications, and proposed solutions to address some of these challenges from non-space sectors. Thereafter, Section 5 briefly covers the history of STM proposals and presents the state-of-the-art solution being proposed for modern STM. Following this review, Section 6 devises a step-by-step plan for exploiting and deploying some of the identified technologies within a five-to-ten-year timeline to close several existing gaps. Finally, Section 7 concludes the paper

Syringa Networks v. Idaho Department of Administration Clerk\u27s Record v. 3 Dckt. 38735

https://digitalcommons.law.uidaho.edu/idaho_supreme_court_record_briefs/1521/thumbnail.jp

New services: strategic exploratory survey of a dynamic phenomenon

Analyse van de ontwikkeling en dynamiek van nieuwe diensten. Aandacht wordt besteed aan het krachtenveld rond nieuwe diensten, het begrip nieuwe diensten en de dynamiek van de nieuwe diensten in de Verenigde Staten.

C-Band Airport Surface Communications System Standards Development. Phase II Final Report. Volume 1: Concepts of Use, Initial System Requirements, Architecture, and AeroMACS Design Considerations

This report is provided as part of ITT s NASA Glenn Research Center Aerospace Communication Systems Technical Support (ACSTS) contract NNC05CA85C, Task 7: New ATM Requirements-Future Communications, C-Band and L-Band Communications Standard Development and was based on direction provided by FAA project-level agreements for New ATM Requirements-Future Communications. Task 7 included two subtasks. Subtask 7-1 addressed C-band (5091- to 5150-MHz) airport surface data communications standards development, systems engineering, test bed and prototype development, and tests and demonstrations to establish operational capability for the Aeronautical Mobile Airport Communications System (AeroMACS). Subtask 7-2 focused on systems engineering and development support of the L-band digital aeronautical communications system (L-DACS). Subtask 7-1 consisted of two phases. Phase I included development of AeroMACS concepts of use, requirements, architecture, and initial high-level safety risk assessment. Phase II builds on Phase I results and is presented in two volumes. Volume I (this document) is devoted to concepts of use, system requirements, and architecture, including AeroMACS design considerations. Volume II describes an AeroMACS prototype evaluation and presents final AeroMACS recommendations. This report also describes airport categorization and channelization methodologies. The purposes of the airport categorization task were (1) to facilitate initial AeroMACS architecture designs and enable budgetary projections by creating a set of airport categories based on common airport characteristics and design objectives, and (2) to offer high-level guidance to potential AeroMACS technology and policy development sponsors and service providers. A channelization plan methodology was developed because a common global methodology is needed to assure seamless interoperability among diverse AeroMACS services potentially supplied by multiple service providers