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My academic background and my research were firstly oriented to the
computer and software engineering domains. Subsequently, I applied this
expertise by coupling it to the computer networks field
to focus my expertise on the development of multimedia
services over IP specially using SIP (Session Initiation Protocol).
These SIP based services mainly include Voice over IP, video over IP,
multiparty VoIP, instant messaging, presence service, et.
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After this
experience in the field of Software Engineering, I have focused my
expertise since 2004 to the development of communication services over
IP. I acted during two years as a research engineer on the
development of IP telephony services on behalf of Mediatrix and M5T
companies (companies that belong to the Media5 group)
based in Sherbrooke (Quebec). Both companies are complementary and
specialized in the development of software (secure
SIP/SDP/RTP/RTCP stacks) as well as hardware components (manufacturing
of IP telephony devices). This experience allowed me to gain more experience
in programming within multitasking real-time services context for
multimedia communications over IP networks. Meanwhile, I have also
developed a global vision on the architectures and software/hardware
interactions for the implementation of these services (Registar Server,
Redirect Server, Presence Server, Proxy Server, etc.). However, this
expertise was focused in the context of a multimedia communication
between only two participants (not taking into account the multiusers
mode). |
| | Since 2006, and as part of my PhD work, I
am interested in expanding multimedia communications between
stakeholders to apply them to multi-user context (multipoint
communication). I explored several concepts and architectures to meet
the needs of a multipoint videoconferences (management and conference
announcement, management of participants and their access rights,
management of "Quality of Service" (QoS), video and audio qualities,
Floor control for managing dialogue, securing communication, etc. ). So
I experimented and used different models: from some basic models like "end-system
mixing" or "conference-server mixing", to
more complex models like the "fully meshed" one.
Towards the end of my PhD I introduced new model that enables support
for large scale conferences using a P2P approach.
Since 2010, I had some collaborations with north americain compagnies
and institutions. I'm acting as independant expert for projects
for providing and designing innovative multimedia services
based on SIP protocol. I'm also acting as reviewer for IEEE
Communication Magazine as well as for some other
journals the the International
Journal of Network Protocols and
Algorithms,
or some IEEE conferences
like
CCNC.
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I also worked at the University of Sherbrooke as a lecturer to teach
mainly object-oriented programming as well as networks and protocols
courses for students graduating from the Faculty of Engineering
(Computer Engineering) and ISECS (University of Sfax in Tunisia). I
participated in the study and implementation of several projects in
collaboration with the company M5T (Sherbrooke). These projects focused
on (1) the introduction of videoconferencing when participants are
interconnected via a fully meshed network, (2) the use of PDAs and thin
clients to participate in videoconferences (application developed under
Windows Mobile), (3) integration of presence information and multimedia
conferences (4) the establishment of a videoconference with the
exchange of medical data (electrocardiogram) between physicians and the
ambulance transporting the patient. |
In recent
years I have published and presented several works in IEEE
international conferences. In 2008 I also filed and obtained a
patent (PCT application) in the field of videoconferencing with the
option of session mobility during a multipoint communication to enable
participants to seamlessly switch from one device to another one
without interruption. In
2015, I published a Book on the Multimedia Session Mobility in
SIP based Communication field.
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