Proposition of Dynamic Virtual Link for IPv6 GeoNetworking (GN6) in ETSI

A proposition to ETSI ITS WP3.First, we describe the limitation of Draft EN 302 636-6-1 V0.1.2 (2012-11). Note that this study is based on year November 2012 versions of the ETSI Standards and that the standards constantly evolve. As a result, parameters, primitives and virtual links on GN6ASL may have changed at the time of reading. To overcome the limitation, we propose Dynamic Virtual Link (DVL)

A practical approach to network-based processing

The usage of general-purpose processors externally attached to routers to play virtually the role of active coprocessors seems a safe and cost-effective approach to add active network capabilities to existing routers. This paper reviews this router-assistant way of making active nodes, addresses the benefits and limitations of this technique, and describes a new platform based on it using an enhanced commercial router. The features new to this type of architecture are transparency, IPv4 and IPv6 support, and full control over layer 3 and above. A practical experience with two applications for path characterization and a transport gateway managing multi-QoS is described.Most of this work has been funded by the IST project GCAP (Global Communication Architecture and Protocols for new QoS services over IPv6 networks) IST-1999-10 504. Further development and application to practical scenarios is being supported by IST project Opium (Open Platform for Integration of UMTS Middleware) IST-2001-36063 and the Spanish MCYT under projects TEL99-0988-C02-01 and AURAS TIC2001-1650-C02-01.Publicad

Secure Network Access via LDAP

Networks need the ability to be access by secure accounts and users. The goal of this project is to configure and expand on LDAP configurations with considerations for AAA via TACACS+ and Radius for network equipment. This will provide adequate security for any given network in terms of access and prevent lose of access to devices which happens all to often with locally configured accounts on devices

Communication Architecture For Distributed Interactive Simulation (CADIS): Rationale Document Draft

Report on necessary communication system protocol data unit standards which must be accepted and adopted for supporting distributed interactive simulation

Software Defined Radio for NB-IoT

The next generation of mobile radio systems is expected to providing wireless connectivity for a wide range of new applications and services involving not only people but also machines and objects. Within few years, billions of low-cost and low-complexity devices and sensors will be connected to the Internet, forming a converged ecosystem called Internet of Things (IoT). As a result, in 2016, 3GPP standardizes NB-IoT, the new narrowband radio technology developed for the IoT market. Massive connectivity, reduced UE complexity, coverage extension and deployment flexibility are the targets for this new radio interface, which also ensures harmonious coexistence with current GSM, GPRS and LTE systems. In parallel, the rise of open-source software combined with Software Defined Radio (SDR) solutions has completely changed radio systems engineering in the late years. This thesis focuses on developing the NB-IoT’s protocol stack on the EURECOM’s open-source software platform OpenAirInterface (OAI). First part of this work aims to implement NB-IoT’s Radio Resource Control functionalities on OAI. After an introduction to the platform architecture, a new RRC layer code structure and related interfaces are defined, along with a new approach for Signalling Radio Bearers management. A deep analysis on System Information scheduling is conducted and a subframe-based transmission scheme is then proposed. The last part of this thesis addresses the implementation of a multi-vendor platform interface based on Small Cell Forum’s Functional Application Platform Interface (FAPI) standard. A configurable and dynamically loadable Interface Module (IF-Module) is designed between OAI’s MAC and PHY layers. Primitives and related code structures are presented as well as corresponding Data and Configuration’s procedures. Finally, the convergence of both NB-IoT and FAPI requirements lead to re-design PHY layer mechanisms for which a downlink transmission scheme is proposed

Guidance Document Draft: Communication Architecture For Distributed Interactive Simulation (CADIS)

Report on necessary communication system protocol data unit standards which must be accepted and adopted for supporting distributed interactive simulation

Management of Digital Video Broadcasting Services in Open Delivery Platforms

The future of Digital Video Broadcasting (DVB) is moving towards solutions offering an efficient way of carrying interactive IP multimedia services over digital terrestrial broadcasting networks to handheld terminals. One of the most promising technologies is Digital Video Broadcasting-Handheld (DVB-H), at present under standardisation. Services deployed via this type of DVB technologies should enjoy reliability comparable to TV services and high quality standards. However, the market at present does not provide effective and economical solutions for the deployment of such services over multi-domain IP networks, due to their high level of unreliability. This paper focuses on service management, service level agreement (SLA) and network performance requirements of DVB-H services. Experimental results are presented concerning QoS sensitivity to network performance of DVB-H services delivered over a multi-domain IP network. Moreover, a solution for efficient and cost effective service management via QoS monitoring and control and network SLA design is proposed. The solution gives DVB-H operators the possibility of fully managing service QoS without being tied to third party operators

Efficient Broadcast for Multicast-Capable Interconnection Networks

The broadcast function MPI_Bcast() from the MPI-1.1 standard is one of the most heavily used collective operations for the message passing programming paradigm. This diploma thesis makes use of a feature called "Multicast", which is supported by several network technologies (like Ethernet or InfiniBand), to create an efficient MPI_Bcast() implementation, especially for large communicators and small-sized messages. A preceding analysis of existing real-world applications leads to an algorithm which does not only perform well for synthetical benchmarks but also even better for a wide class of parallel applications. The finally derived broadcast has been implemented for the open source MPI library "Open MPI" using IP multicast. The achieved results prove that the new broadcast is usually always better than existing point-to-point implementations, as soon as the number of MPI processes exceeds the 8 node boundary. The performance gain reaches a factor of 4.9 on 342 nodes, because the new algorithm scales practically independently of the number of involved processes.Die Broadcastfunktion MPI_Bcast() aus dem MPI-1.1 Standard ist eine der meistgenutzten kollektiven Kommunikationsoperationen des nachrichtenbasierten Programmierparadigmas. Diese Diplomarbeit nutzt die Multicastfähigkeit, die von mehreren Netzwerktechnologien (wie Ethernet oder InfiniBand) bereitgestellt wird, um eine effiziente MPI_Bcast() Implementation zu erschaffen, insbesondere für große Kommunikatoren und kleinere Nachrichtengrößen. Eine vorhergehende Analyse von existierenden parallelen Anwendungen führte dazu, dass der neue Algorithmus nicht nur bei synthetischen Benchmarks gut abschneidet, sondern sein Potential bei echten Anwendungen noch besser entfalten kann. Der letztendlich daraus entstandene Broadcast wurde für die Open-Source MPI Bibliothek "Open MPI" entwickelt und basiert auf IP Multicast. Die erreichten Ergebnisse belegen, dass der neue Broadcast üblicherweise immer besser als jegliche Punkt-zu-Punkt Implementierungen ist, sobald die Anzahl von MPI Prozessen die Grenze von 8 Knoten überschreitet. Der Geschwindigkeitszuwachs erreicht einen Faktor von 4,9 bei 342 Knoten, da der neue Algorithmus praktisch unabhängig von der Knotenzahl skaliert