This article first reviews the architecture of a typical ATM switch and considers the problem of handling both continuous bit oriented and bursty traffic with low loss and delay requirements. We examine six different approaches to handling mixed traffic in an ATM switch, and compare their performance by means of simulation. A switch architecture which distinguishes between three traffic types w...

3GPP has introduced LTE Femtocells to manipulate the traffic for indoor users and to minimize the charge on the Macro cells. A key mechanism in the LTE traffic handling is the packet scheduler which is in charge of allocating resources to active flows in both the frequency and time dimension. So several scheduling algorithms need to be analyzed for femtocells networks. In this paper we introduc...

addition-conflict-flow. However, the previous models and methods gave little or no consideration to nonmotorized movements, and traffic characteristics at unsignalized intersections with only vehicular movements differ from those with vehicular and nonmotorized movements. A research project sponsored by the Ministry of Science and Technology in China was conducted by the authors to assess capac...

A linear time-varying aggregate traffic flowmodel can be used to develop traffic flowmanagement strategies using optimization algorithms. However, there are few methods available in the literature to translate these aggregate solutions into practical control actions involving individual aircraft. In this paper, a computationally efficient disaggregation algorithm is proposed by employing a seri...

As technologies for full self-driving automation in vehicles progress rapidly, human factors become more complicated, and it is more difficult to predict driver’s behaviour on the road, especially under the mixed-traffic condition. In this paper, we introduce an efficient framework for research on the interaction between human-driven physical vehicles and autonomous vehicles by integrating a tr...

A framework for string-stability analysis is formulated in this paper. First, uniform string will be analyzed. We will then present analysis results on strings of mixed vehicles. A String-Stability Margin (SSM) index is defined in this paper to give a quantitative measurement of any ACC design. Simulation results using MATLAB and a microscopic traffic simulator will also be given to demonstrate...

We present a macroscopic model of mixed multilane freeway traffic that can be easily calibrated to empirical traffic data, as is shown for Dutch highway data. The model is derived from a gas-kinetic level of description, including effects of vehicular space requirements and velocity correlations between successive vehicles. We also give a derivation of the lane-changing rates. The resulting dyn...

We investigate the problem of routing traffic through a congested network in an environment of non-cooperative users. We use the worst-case coordination ratio suggested by Koutsoupias and Papadimitriou to measure the performance degradation due to the lack of a centralized traffic regulating authority. We provide a full characterization of the worst-case coordination ratio in the restricted ass...

Cellular automata modeling techniques and the characteristics of mixed traffic flow were used to derive the 2-dimensional model presented here for simulation of pedestrian's crossing dynamics. A conception of "stop point" is introduced to deal with traffic obstacles and resolve conflicts among pedestrians or between pedestrians and the other vehicles on the crosswalk. The model can be easily ex...

In this paper we present VnL-TDMA, a new MAC (medium access control) protocol for accessing in TDMA a satellite channel shared among various earth stations which transmit mixed traffic (real-time and non-real time). We concentrate on the analysis of the real-time allocation for variable bit rate (VBR) traffic, and analyse its performance using a synthetically generated VBR traffic modelled on t...