|RESEARCH AREAS||PROJECTS||PUBLICATIONS||TECHNOLOGY TRANSFER|
Due to ever increasing demand
of transporting huge amount of information generated from various sources
such as voice, data, video, etc., modern telecommunication networks have
been transformed into all digital and broadband. Depending on the
characteristics of information sources and the availability of facility,
the mode of transportation can be either constant bit rate (CBR) using
circuit switched networks or variable bit rate (VBR) using packet switched
networks. For efficient utilization of the network, all kinds of
information can be transported using BISDN (Broadband Integrated Services
Digital Network) and ATM (Asynchron-ous Transfer Mode) technology.
One important research area in Network Technology is the design of high
speed digital network with good performance. The issues need
to be investigated include modelling of VBR video traffic, efficient assignment
of heterogeneous traffic classes with diverse quality of services, optimal
bandwidth allocation, routing and call admission control etc. A physical
ATM network testbed has been set up at HKUST to facilitate the research.
Other research areas include IP (Internet Protocal), Quality of Service,
Differentiated Service (DiffServ), and IP multicast. In particular,
a diffserv-capable router based on Linux is currently being developed for
the support of videoconferencing, multimedia remote learning, IP telephony,
and virtual privot netowrk (VPN). Also, a novel programmable and
protocal-independent platform is being constructed to handle both the ATM
and IP traffic in a much faster and more efficient way.