Publication des Enseignants-Chercheurs

Dimensioning traffic performance in IMS network - Auteur: Alassane BA & Boudal NIANG, PhD

Users and enterprise needs will drive multimedia service evolution for both mobile and fixed operators. IMS (IP Multimedia Subsystem) is a recognized standard of 3GPP group. IMS is well integrated with existing voice and data networks, while adopting many of their key characteristics. The SIP servers are the key part of the IMS structure. They are the main components responsible for processing and routing messages. With communication networks getting more and more present in our daily activities, network outages or significant degradations of the quality of service (QoS) become less and less tolerable. Our research works on improvement of the QoS in IMS networks. It is base in the one hand modeling traffic and on the other hand dimensioning traffic. These performance optimizations are essentially dedicated to the traffic of input and output flows at SIP servers. We build OpenSource IMS platform under UBUNTU Linux distribution.  IEEE 8th International Conference AICT, ISBN 978 1 4799 4120 9. October 2014.

Ould . HABIBOULAHY LEMRABOTT, I. LY, A. S. MAIGA, A. WEREME, F. I. BARRO, G. SISSOKO

LE JOURNAL DES SCIENCES, Bulk and surface recombination parameters measurement in silicon double sided solar cell under constant monochromatic illumination,  Numero  1:  pp 44 – 50, 2008.

Lemrabott. OULD HABIBOULAHY, A. S MAIGA, A. DIAO, G. SISSOKO

Impedance spectroscopy method applied to electrical parameters determination on bifacial silicon solar cell under magnetic fieldp, LE JOURNAL DES SCIENCES, Numéro  3: pp 40 – 47, 200748 ― 52.

Bandwidth management — A deep packet inspection mathematical model. Auteur : Boudal NIANG, PhD

Bandwidth management — A deep packet inspection mathematical model New technologies and services provided by Internet Service Providers (M2M, clouds, online-games, HDvideo), lead to the constant growth of traffic per a single subscriber. This forces operators to increase network capacity even for processing traffic generated by existing subscribers. Under the circumstances of an overloaded radio network (common situation in large cities) subscribers often don't obtain the bandwidth guaranteed by the contract. The Deep Packet Inspection helps operator to distinguish type of service in aggregate traffic and assign bitrate for each service separately. Our research works based on proposal of mathematical models of calculating the different flow characteristics and the number of tasks handling by a very speedy system dealing with Giga Ethernet. The Deep Packet Inspection is a software based engine; it allows analyzing the real-time traffic, enforcing rules and instruction received from other network component named Policy Controller and Rule Function. Therefore, the Software will deal with different kinds of traffic like Web based content, social networks traffic, Peer-to-Peer, Streaming, IPTV, Voice etc. IEEE 6th International Conference ICUMT, pp. 169 – 175, ISSN 2157-0221. October 2014

Ahmed KORA D Optical Orthogonal Codes Performance Limitations with Large Spectrum Optical Sources in Next Generation Passive Optical Network, IEEE ICWOC 2011.

Ahmed KORA D Optical Orthogonal Codes Performance Limitations with Large Spectrum Optical Sources in Next Generation Passive Optical Network, IEEE ICWOC 2011.
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