Chers Collègues,

Vous êtes cordialement invités à un séminaire Méthodes donné par Aymen Jaziri, doctorant Cifre RST/Orange, vendredi 14 octobre 2016 à 11h en salle A03. Le sujet portera sur la localisation des hotspots dans les réseaux mobiles et le déploiement des petites cellules, fixes, mobiles ou drones, pour gérer ce type de traffic.

Venez nombreux !

Jérémie

PS – Résumé:

The continuous increasing traffic in cellular networks has forced the mobile operators to look for efficient and viable options to manage their networks so as to ensure more efficiency over the network life cycle while also evolving with the implementation of new technologies. Traffic hotspot localization can help operators to identify the areas where deploying small cells can reduce the congestion.

We firstly propose and assess a new traffic hotspot localization method based on the projection of O&M Key Performance Indicators (KPIs) on the coverage map. Compared to probing methods, the computational costs and the equipment expenditures are reduced. Moreover, the localization accuracy is improved.

Next, in order to evaluate the impact of the limited accuracy of traffic localization tools on small cell deployment, we study the performance of three different scenarios. The first one considers a network of macrocells only and represents a benchmark to decide about the usefulness of small cells. The second one is based on a network of macrocells with a perfectly deployed small cell allowing to identify the limitations of small cell deployment and the last one is with an imperfectly deployed small cell.

Realizing that a significant amount of cellular demand is generated on the go and suffers deteriorating quality, we investigate the potential performance gains of using moving small cells. The major outcome is to understand if moving cells leverage the relative operators’ investments.

Finally, we propose a new mobile data offloading mechanism which capitalizes on drone small cells to alleviate the data traffic load. Several possible scenarios mainly related to traffic hotspots’ mobility and disappearance are investigated in addition to the access mode, the advantages and the open issues related to using drone cells.