The adaptive traffic signal control system, as well as the Transit Signal Priority (TSP) concept has both been viewed as important opportunities for reducing overall traffic congestions and improving bus transit services. However, few studies were conducted on combining them together. A dynamic signal timing optimization model was developed in this research, which aims at reallocating green tim...

In MANET, the nodes are wirelessly linked to each other and the nodes are highly mobile. This makes the MANET topology highly dynamic. The communication between distant nodes occurs through several intermediate nodes, which act as router too. In MANET, the nodes depend on its battery power, which is limited. Also, the data packet being transmitted in this network have different priority; such a...

We consider the telematics appliances, such as firewall, as a basic part of security system with specific preemptive priority queuing and access control algorithm oriented on multi-core implementation. Proposed randomized push-out buffer management mechanism with α parameter allows tuning very efficiently the loss probability of priority packets and the time they spend in queue as the factors u...

The main interconnecting device of today’s Internet the router, forwards IP packets without any true Quality of Service (QoS) considerations. This paper discusses a new approach for routing IP packets, which provides a basic QoS characteristic. It is shown that, by fine-tuning the parameters of a multi-port router, service discrimination can be achieved, according to the priority value set for ...

For wireless networks operating during emergency conditions, emergency, handoff, and new calls are the main kinds of demand. Different operators will have different policies about which should have higher priority, and how to implement that kind of priority. This paper focuses on applying queuing methods for admission control for the above three types of calls. A Weighted Earliest Deadline sche...

This paper focuses on the optimization of bus signal priority with consideration stochastic traffic demand. Based a situation variability composition, phase clearance reliability (PCR) value each and composition ratio is introduced to reflect condition at intersection. Then, model proposed purpose maximum total vehicular departure as goal. In order obtain optimal solution, an improved algorithm...

This paper develops a performance model for a class of soft real time systems. The incentive came from a specific commercial system; however the resulting model can have other applications. The model incorporates a set of properties that are not all common in prior models such as a queueing network with a polled serving pattern, programmable priority levels, multiple message classes, network-lo...