| DYNAMIC
MULTICAST
The recent growth
of multimedia group applications coupled with advancement in high-speed
networking are driving the need for efficient multicast communication
protocols over the Internet. Examples of such applications include
teleconferencing, distance education, and shared workspace. These
applications require QoS assurance and secure communication services.
During a life-cycle of a multicast session, three important events
can occur: group dynamics, network dynamics, and traffic dynamics.
The first two are concerned with maintaining a good quality (cost)
multicast tree taking into account dynamic join/leave of members,
and changes in network topology due to link/node failures/additions,
respectively. The third aspect is concerned with flow, congestion,
and error control.
The objectives of our research are:
- to develop
scalable protocols for handling group and network dynamics in
QoS multicasting;
- to develop
scalable protocols for secure multicast communication.
The following are our specific research goals:
- Developing
efficient algorithms for QoS multicast routing;
- Developing
efficient algorithms for tree rearrangement and core/tree migration
in QoS multicasting;
- Developing
efficient protocols for link, node, and core failure recovery
in QoS multicasting;
- Developing
a scalable architecture for DiffServ multicasting and algorithms
for multicast routing and SLA negotiation in DiffServ multicasting;
- Developing
scalable protocols for group key management; and packet
source authentication in secure multicasting.
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