Network Simulator 3 (ns-3) is a powerful tool for modeling the behavior of computer networks using simulation. We have developed three well known differentiated service packet queuing methods: strict priority queuing, weighted fair queuing, and weighted round robin queuing, in the simulation framework. In this paper, we present the implementation details of the three modules as well as their us...

We present a new iterative mathematical model for calculating the average bandwidth assigned to traffic flows using a Weighted Round Robin with Priority queuing (WRRPQ) scheduler with both strict and rate controlled priority in IP based NGN networks. The bandwidth assignment estimation is based on the average packet length, link speed and the arrival rate. We prove the model outcome with exampl...

An improved performance analysis of priority based scheduling algorithm for the ad hoc grid layer is presented in this paper. A priority queuing model is developed to reduce the execution time of the jobs. Here, jobs to be dispatched based on priority. Execution time is one prime metric proposed for the system. We have achieved the overall execution time for the proposed system for 25 jobs is7....

The Core Stateless Fair Queuing (CSFQ) is a distributed approach of Fair Queuing (FQ). The limitations include its inability to estimate fairness during large traffic flows, which are short and bursty (VoIP or video), and also it utilizes the single FIFO queue at the core router. For improving the fairness and efficiency, we propose an Enhanced Core Stateless Fair Queuing (ECSFQ) with multiple ...

We analyze a multi-server priority queueing system with partial buffer sharing, where the input is a discrete autoregressive process of order 1 (DAR(1)) which is known as a good mathematical model for a VBR-coded teleconference video traffic. We assume that arriving packets are classified into two priority classes, say, high priority class and low priority class based on their importance. A thr...

: The present paper proposes a new model for priority assignment to the incoming call connection request for all optical WDM communication, adopting standard queuing theory concept. The model has been proposed for three different levels of call connection priorities, categorizing them into three types of signals as type0, type1 and type2 according to increasing priority, and generation probabil...

This paper presents the design of a new error compensation model for providing QoS support on a wireless network. The compensation model uses different compensation strategies for the different priority classes in conjunction with a Multiclass Priority Fair Queuing (MPFQ) algorithm. Criteria for fair error compensation and a classification of error compensation models are established in order t...