Pii: S0045-7906(00)00012-4
نویسندگان
چکیده
To support a great number of dispersed users in a wider area with high-speed communication services, we develop a large-scale and ultra high-speed MAN based on hierarchical ring con®guration. The network is constituted by backbone and local rings, which are connected by bridges. In such a network, trac congestion may always occur due to the mismatch of transmission speed between backbone and local rings. To cope with the issue, we adopt a resource reservation approach based on the method of cyclic reservation-based access control for controlling access to dierent network resources, viz. network bandwidth and bridge buers. By this approach, a MAC protocol that can achieve fair access to network resources and avoid trac congestion is proposed for the network. To evaluate the performance properties of the network, several simulation experiments are performed and some optimistic results are revealed. 7 2000 Elsevier Science Ltd. All rights reserved.
منابع مشابه
Towards automated evolutionary design of combinational circuits
In this paper we propose a methodology based on a genetic algorithm (GA) to automate the design of combinational logic circuits in which we aim to minimize the total number of gates used. Our results are compared against those produced by human designers and by another GA-based approach. We also analyze the importance of using a non-binary representation in this problem despite the commonly acc...
متن کاملRecovering structure uncertainties from noisy sense data
This work examines closely the possibilities for errors mistakes and uncertainties in sensing systems We identify and suggest techniques for modeling analyzing and recovering these uncertainties This work concentrates on uncertainties in visual sensing for manipulators The goal is to recover D structure and motion characteristics of the environments under observation from noisy measurements We ...
متن کاملConcurrent design of a three-link manipulator prototype
The paper presents an a ordable and comprehensive robotic model of critical aid to any engineering school involved in teaching robotics. We present the stages of designing a three-link robot manipulator prototype that was built as part of a research project for establishing a prototyping environment for robot manipulators. Building this robot helped determine the required subsystems and interfa...
متن کاملA VHDL-based HW/SW cosimulation of communication systems
In this paper, we introduce homogeneous cosimulation method, which is suitable for modeling and simulation of systems comprising hardware (HW) and software (SW) components. In this method, a hardware description language with embedded programming capabilities (like VHDL) is used to model both HW/SW parts at any desired level of abstraction. Because of platform homogeneity, no sophisticated coor...
متن کاملGeneration of sign Walsh spectra from disjoint cubes of Boolean functions
A new algorithm is given that converts a reduced representation of Boolean functions in the form of disjoint cubes to sign Walsh spectra. Since the known algorithms that generate sign Walsh spectra always start from the truth table of Boolean functions, the method presented computes faster with a smaller computer memory. The method is especially efficient for such Boolean functions that are des...
متن کامل