The generic context sharing protocol GCSP : Application to signaling in a cross-network and multi-provider environment

This paper proposes a new signaling paradigm and a new signaling protocol called the Generic Context Sharing Protocol (GCSP) for the construction of a global control plane over present and future communication networks. After identifying the special nature of the control plane software involved in the setup of a conversational service instance it examines the various mechanisms for information sharing which leads to our new proposal. We show that this new data-based protocol is better suited to control plane requirements than the present day’s command-oriented signaling mechanisms. We indicate the basic principles of the protocol and we give a brief description of the generic context. We show the place of this proposal in the present day research efforts and we mention a practical implementation case.8th IFIP/IEEE International conference on Mobile and Wireless CommunicationRed de Universidades con Carreras en Informática (RedUNCI

The generic context sharing protocol GCSP : Application to signaling in a cross-network and multi-provider environment

This paper proposes a new signaling paradigm and a new signaling protocol called the Generic Context Sharing Protocol (GCSP) for the construction of a global control plane over present and future communication networks. After identifying the special nature of the control plane software involved in the setup of a conversational service instance it examines the various mechanisms for information sharing which leads to our new proposal. We show that this new data-based protocol is better suited to control plane requirements than the present day’s command-oriented signaling mechanisms. We indicate the basic principles of the protocol and we give a brief description of the generic context. We show the place of this proposal in the present day research efforts and we mention a practical implementation case.8th IFIP/IEEE International conference on Mobile and Wireless CommunicationRed de Universidades con Carreras en Informática (RedUNCI

Services multi-fournisseurs et trans-réseaux: mécanismes pour un plan contrôle global. Application à un nouveau paradigme de signalisation et aux médiateurs de signalisation.

Achieving multi-provider and cross-network services is a difficult and expensive problem today. The objective of our thesis is to simplify the realization of such services, for this reason we proposed new control plane mechanisms. In a first part we present a new theoretical framework for the concepts of the control plan. Then in 2nd part we identify the difficulties of achieving multi-provider and cross-network services. Then we show that one of the origins of these difficulties comes from the cooperative nature of the control plane which poses problems that we identify. This precision of the origin of the difficulties allowed us in a 3rd part, to understand that the current mechanisms of signaling are not optimal for the requirements of the control plane. Thus we propose a change of paradigm for signaling more adapted to the control plane requirements. In the 4th part, in order to implement this new signaling, we propose a new generic method to structure the data of the local context which we call the Generic Context. In the 5th part, we propose a new signaling protocol that we call the Generic Context Sharing Protocol (GCSP). GCSP implements the new signaling paradigm. Finally, in the 6th part, in order to show the validity of our approach, we implement it in an industrial product. Thus we propose a new Computer Telephony Integration (CTI) architecture and signaling mediators which solves several technical and financial constraints from which the old CTI architecture suffered

Services multi-fournisseurs et trans-réseaux (mécanismes pour un plan contrôle global)

La réalisation des services multi-fournisseurs et trans-réseaux est aujourd hui difficile et coûteuse. L objectif de notre thèse est de simplifier la réalisation de tels services, pour cela nous proposons de nouveaux mécanismes pour le plan contrôle. Dans une première partie nous présentons un nouveau cadre théorique pour les concepts du plan contrôle. Puis en deuxième partie nous identifions les difficultés de réalisation de services multi-fournisseurs et trans-réseaux. Ensuite nous avons montrons que l une des origines de ces difficultés provient de la nature coopérative du plan contrôle qui pose des problèmes que nous précisons. Cette précision de l origine des difficultés nous a permis, en troisième partie, de comprendre que les mécanismes actuels de signalisation ne sont pas optimaux pour les besoins du plan contrôle pour cela nous proposons un changement de mécanisme pour la signalisation. En quatrième partie, afin de mettre en œuvre cette nouvelle signalisation, nous proposons une nouvelle méthode de structuration générique des données du contexte local que nous appelons Contexte Générique. En cinquième partie, nous proposons un nouveau protocole de signalisation que nous appelons Generic Context Sharing Protocol (GCSP). GCSP implémente le nouveau paradigme de signalisation. Enfin, en sixième partie, pour démontrer la validité de notre approche nous l avons mise en œuvre dans un produit industriel. Pour cela nous proposons une nouvelle architecture de Couplage Téléphonie Informatique (CTI) en entreprise et des médiateurs de signalisation qui résout plusieurs contraintes techniques et financières dont souffrait l ancienne architecture CTI.Achieving multi-provider and cross-network services is a difficult and expensive problem today. The objective of our thesis is to simplify the realization of such services, for this reason we proposed new control plane mechanisms. In a first part we present a new theoretical framework for the concepts of the control plan. Then in 2nd part we identify the difficulties of achieving multi-provider and cross-network services. Then we show that one of the origins of these difficulties comes from the cooperative nature of the control plane which poses problems that we identify. This precision of the origin of the difficulties allowed us in a 3rd part, to understand that the current mechanisms of signaling are not optimal for the requirements of the control plane. Thus we propose a change of paradigm for signaling more adapted to the control plane requirements. In the 4th part, in order to implement this new signaling, we propose a new generic method to structure the data of the local context which we call the Generic Context. In the 5th part, we propose a new signaling protocol that we call the Generic Context Sharing Protocol (GCSP). GCSP implements the new signaling paradigm. Finally, in the 6th part, in order to show the validity of our approach, we implement it in an industrial product. Thus we propose a new Computer Telephony Integration (CTI) architecture and signaling mediators which solves several technical and financial constraints from which the old CTI architecture suffered.PARIS-Télécom ParisTech (751132302) / SudocSudocFranceF

Effect of shelter-in-place on emergency department radiology volumes during the COVID-19 pandemic.

PurposeThe coronavirus disease 2019 (COVID-19) pandemic has led to significant disruptions in the healthcare system including surges of infected patients exceeding local capacity, closures of primary care offices, and delays of non-emergent medical care. Government-initiated measures to decrease healthcare utilization (i.e., "flattening the curve") have included shelter-in-place mandates and social distancing, which have taken effect across most of the USA. We evaluate the immediate impact of the Public Health Messaging and shelter-in-place mandates on Emergency Department (ED) demand for radiology services.MethodsWe analyzed ED radiology volumes from the five University of California health systems during a 2-week time period following the shelter-in-place mandate and compared those volumes with March 2019 and early April 2019 volumes.ResultsED radiology volumes declined from the 2019 baseline by 32 to 40% (p < 0.001) across the five health systems with a total decrease in volumes across all 5 systems by 35% (p < 0.001). Stratifying by subspecialty, the smallest declines were seen in non-trauma thoracic imaging, which decreased 18% (p value < 0.001), while all other non-trauma studies decreased by 48% (p < 0.001).ConclusionTotal ED radiology demand may be a marker for public adherence to shelter-in-place mandates, though ED chest radiology demand may increase with an increase in COVID-19 cases

Effect of shelter-in-place on emergency department radiology volumes during the COVID-19 pandemic.

PurposeThe coronavirus disease 2019 (COVID-19) pandemic has led to significant disruptions in the healthcare system including surges of infected patients exceeding local capacity, closures of primary care offices, and delays of non-emergent medical care. Government-initiated measures to decrease healthcare utilization (i.e., "flattening the curve") have included shelter-in-place mandates and social distancing, which have taken effect across most of the USA. We evaluate the immediate impact of the Public Health Messaging and shelter-in-place mandates on Emergency Department (ED) demand for radiology services.MethodsWe analyzed ED radiology volumes from the five University of California health systems during a 2-week time period following the shelter-in-place mandate and compared those volumes with March 2019 and early April 2019 volumes.ResultsED radiology volumes declined from the 2019 baseline by 32 to 40% (p < 0.001) across the five health systems with a total decrease in volumes across all 5 systems by 35% (p < 0.001). Stratifying by subspecialty, the smallest declines were seen in non-trauma thoracic imaging, which decreased 18% (p value < 0.001), while all other non-trauma studies decreased by 48% (p < 0.001).ConclusionTotal ED radiology demand may be a marker for public adherence to shelter-in-place mandates, though ED chest radiology demand may increase with an increase in COVID-19 cases