We report our ongoing research in real-time communication with FDDI-based reconngurable networks. The original FDDI architecture was enhanced in order to improve its fault-tolerance capability while a scheduling methodology, including message assignment , bandwidth allocation, and bandwidth management is developed to support real-time communication. As a result, message deadlines are guaranteed...

We propose request-based dynamic bandwidth allocation (DBA) of gigabit passive optical network (GPON). The optical line terminal (OLT) in GPON grants bandwidth to optical network units (ONUs). ONUs report request bandwidth which depends on queue lengths of traffic containers (TCONTs) to the OLT. In the OLT, DBA of GPON supports a request-based polling order to allocate bandwidth. Our request-ba...

In this paper, we study the bandwidth allocation problem for an ATM multiplexer loaded with heterogeneous low-motion VBR video sources. We propose a cell scheduling scheme which balances cell loss among different sources so that they experience nearly the same cell loss rate. To estimate the bandwidth required by a VBR video source, we characterize its traffic by four parameters: peak rate, mea...

In mobile ad hoc networks (MANETs), inefficient resource allocation causes heavy losses to the service providers and results in inadequate user proficiency. For improving and automating the quality of service of MANETs, efficient resource allocation techniques are required. In this paper, we propose an agent based bandwidth reservation technique for MANET. The mobile agent from the source start...