No abstract

International audienceDue to the success of internet and huge consuming services e.g. youtube, traffic passing through operators network is showing an exponential growth. Besides, the adopted flat rate charging policy reduces the Average Revenue Per User (ARPU) and makes the traditional actions such as the costly deployment of new equipments inefficient anymore. In order to overcome these challenges offload techniques at the RAN and CORE levels were proposed. However, network optimization via the management of the different offload functions could be long and complex. This is why, in this paper a self-optimization solution ensuring some level of human tasks automation is provided

The COVID-19 pandemic has impacted the world economy and mainly all activities where social distancing cannot be respected. In order to control this pandemic, screening tests such as PCR have become essential. For example, in the case of a trip, the traveler must carry out a PCR test within 72 hours before his departure and if he is not a carrier of the COVID-19, he can therefore travel by presenting, during check-in and boarding, the negative result sheet to the agent. The latter will then verify the presented sheet by trusting: (a) the medical biology laboratory, (b) the credibility of the traveler for not having changed the PCR result from "positive to negative". Therefore, this confidence and this verification are made without being based on any mechanism of security and integrity, despite the great importance of the PCR test results to control the COVID-19 pandemic. Consequently, we propose in this paper a blockchainbased decentralized trust architecture that aims to guarantee the integrity, immutability and traceability of COVID-19 test results. Our proposal also aims to ensure the interconnection between several organizations (airports, medical laboratories, cinemas, etc.) in order to access COVID-19 test results in a secure and decentralized manner.