{
The development of high-speed networks and global internetworking
protocols enable new, multimedia-oriented, applications to emerge,
such as teleconferencing and other collaborative applications, or
video-on-demand. These new applications rely on the underlying
communication infrastructure to be able to provide Quality of Service
(QoS) guarantees, typically in form of delay and jitter bounds.
Appropriate admission control during connection establishment is
necessary for the underlying communication infrastructure to satisfy
the above QoS requirements. Admission control is used in conjunction
with a resource reservation protocol that reserve resources at
communication establishment time. Existing resource reservation
algorithms are limited when it comes to reserving resources for
multiparty communication environments, in particular for multicast
connections. We propose a new protocol for connection establishment
in a real-time one-to-many communication environment. This algorithm
very effectively allocates resources for connections along their
multicast routes, and thus reduces call-blocking probabilities and
increases resource utilization while providing QoS guarantees. This
is illustrated with a suite of simulation experiments, which compares
the performance of our approach with that of other existing protocols.
}