The mathematical approaches for modeling dynamic traffic can roughly be divided into two categories: discrete packet routing models and continuous flow over time models. Despite very vital research activities on in both categories, the connection between these was poorly understood so far. In this work we build by specifying a (competitive) model, which is terms of time, proving its convergence...

In this paper, we compare two analytical models for evaluation of cache coherence overhead of a shared bus multiprocessor with private caches. The models are based on a closed queuing network with different service disciplines. We find that the priority discipline can be used as a lower-level bound. Some numerical results are shown graphically.

Priority queues have a great importance in the study of computer communication networks in which different types of traffic require different quality of service standards. The discrete-time non-preemptive priority queuing model with priority jumps is proposed in this paper. On the basis of probability generating functions mean system contents and mean queuing delay characteristics are obtained....

We present a model hierarchy for queuing networks and supply chains, analogous to the hierarchy leading from the many body problem to the equations of gas dynamics. Various possible mean field models for the interaction of individual parts in the chain are presented. For the case of linearly ordered queues the mean field models and fluid approximations are verified numerically.

2 Systems and Models 7 2.1 Classification . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 9 2.2 Input and output representations . . . . . . . . . . . . . . . . . . . . 10 2.2.1 Time Driven Systems . . . . . . . . . . . . . . . . . . . . . . 10 2.2.2 Event Driven Systems . . . . . . . . . . . . . . . . . . . . . 11 2.3 Time . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ....

The paper presents different combinations of queuing methods and their impact on the VoIP traffic delay within the network. In our experiment we combined three of the most useful queuing methods where we put together priority queuing (PQ) with class-based weighted fair queuing (CBWFQ), custom queuing (CQ) with CBWFQ and weighted fair queuing (WFQ) with CBWFQ. Each hybrid method is compared with...

in this paper, new features of satellite configuration, such as ip network  based infrastructure and separated signaling and media  are considered to propose a variety of satellite configurations in different orbits. because of their  different altitude in space such as low earth orbit(leo) and geostationary orbit (geo). a test bed used to test call setup delay in a one space link to process th...

Ubiquitous wireless sensor network are expected to play an important role in the future society for various applications. As a result, carefully managing the network resources to improve the network performance becomes a hot research topic. The common challenges of a WSN are network connectivity, node mobility, energy consumption, data computation and aggregation at sensor nodes. In this paper ...