Practical Lte Based Security Forces Pmr Networks
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Practical LTE based security forces PMR networks
Security forces PMR networks are moving from proprietary technologies for their Mission Critical Push-To-Talk basic service, and their data services which must provide large bandwidth real-time access, to the databases. LTE Based is adopted with backup access to public MNOs to complement their own radio coverage. Specific technologies such as multicasting of visio are required so the MCPTT works within a restricted bandwidth. The need to be able to change the main MNOs to provide resilient coverage requires specific choices of SIM cards, with OTAble security domains. Practical LTE Based Security Forces PMR Networks assumes that the reader has a basic knowledge of the 4G network architecture and services, and the book focusses on the specific features and choices required to fulfill the need of security forces PMR networks. These include tactical and centralized, including LTE based voice services VoLTE and IMS. It can be used as a reference or textbook, with many detailed call flows and traces being included. The author, who has also a long teaching career in Operations Research, provides mathematical models for the optimization of tactical network federations, multicast coverage and allocation of preemptive priorities to PMR group members. He is a pioneer in the area of Virtual Roaming, an application of graph theory and telecommunications to provide roaming without direct relations, having previously published books on SMS Hubs, SS7 Hubs, Diameter Hubs, GTP Hubs. The use of M2M (monitoring devices) for security forces with mobility is covered in detail in the book, including the new LoRa virtual roaming which goes beyond the scope of PMR.
Practical LTE Based Security Forces PMR Networks
Author: Henry-Labordère, Arnaud
language: en
Publisher: River Publishers
Release Date: 2018-09-12
Security forces PMR networks are moving from proprietary technologies for their “Mission Critical Push-To-Talk” basic service, and their data services which must provide large bandwidth real-time access, to the databases. LTE Based is adopted with backup access to public MNOs to complement their own radio coverage. Specific technologies such as multicasting of visio are required so the MCPTT works within a restricted bandwidth. The need to be able to change the main MNOs to provide resilient coverage requires specific choices of SIM cards, with OTAble security domains. Practical LTE Based Security Forces PMR Networks assumes that the reader has a basic knowledge of the 4G network architecture and services, and the book focusses on the specific features and choices required to fulfill the need of security forces PMR networks. These include tactical and centralized, including LTE based voice services VoLTE and IMS. It can be used as a reference or textbook, with many detailed call flows and traces being included. The author, who has also a long teaching career in Operations Research, provides mathematical models for the optimization of tactical network federations, multicast coverage and allocation of preemptive priorities to PMR group members. He is a pioneer in the area of Virtual Roaming, an application of graph theory and telecommunications to provide roaming without direct relations, having previously published books on SMS Hubs, SS7 Hubs, Diameter Hubs, GTP Hubs. The use of M2M (monitoring devices) for security forces with mobility is covered in detail in the book, including the new LoRa virtual roaming which goes beyond the scope of PMR.
Cryptographie classique - De la préparation du concours Alkindi jusqu’aux épreuves du Bac
Author: Arnaud Henry-Labordère
language: fr
Publisher: Editions Ellipses
Release Date: 2021-02-23
Cet ouvrage s’adresse aux professeurs de mathématiques des lycées et collèges, aux candidats du concours de cryptographie Alkindi, et aux lycéens préparant le bac scientifique. Les énoncés et TOUS les corrigés commentés des 38 sujets finaux des concours Alkindi 2016-2021 sont fournis. Les corrigés 2021 sont dus à Romain Giuge, professeur agrégé de Mathématiques. Celui de la fameuse épreuve finale de 2020, fait pour être impossible, a été livré par la DGSE qui l'avait proposé, et celui de 2019, déduit de celui-ci, le principe de la méthode étant le même. Les principaux programmes Alkindi en Python sont inclus. Pour le Bac, une boîte à outils de programmes Python est proposée aux enseignants afin de faciliter leur création de Travaux Pratiques de cryptographie.