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Delivering desired QoS to the applications is one of the most important challenges in next generation networks. Designing efficient queue management in midway nodes leads to improvement in NGN efficiency. This paper presents fair Efficient active Queue Management (EQM) mechanism for congestion avoidance and control in next generation networks. Proposed AQM mechanism uses instantaneous queue length...
Numerous active queue management (AQM) schemes have been proposed to stabilize the queue length in routers, but most of them lack adequate adaptability to TCP dynamics, due to the nonlinear and time-varying nature of communication networks. To deal with the above problems, we propose an intelligent price-based congestion control algorithm named IPC. IPC measures congestion through using an intelligent...
In this work, we study the control of communication networks in the presence of both inelastic and elastic traffic flows. The characteristics of these two types of traffic differ significantly. Hence, earlier approaches that focus on homogeneous scenarios with a single traffic type are not directly applicable. We formulate a new network optimization problem that incorporates the performance requirements...
Low resource availability in Mobile Ad hoc NETworks (MANETs) requires efficient utilization of resources and imposes severe demands on routing protocols, motivating their study, since the existing (for wired networks) routing protocols perform poorly, due to the unique characteristics of MANETs. The Dynamic Source Routing (DSR) protocol is one of the most important, simple, and efficient reactive...
This paper proposed an improved ant algorithm with feedback function extension and dynamic pheromone design (dynamicAnt) for the network traffic management issue. The scheme first mapped the network traffic path delay and bandwidth metrics into the parameters of the basic ant algorithm. And then extended the network feedback function to the basic ant algorithm by simulated it as the food smell. By...
Day by day Internet communication and services are experiencing an increase in variety and quantity in their capacity and demand. Thus, making traffic management and quality of service approaches for optimization of the Internet become a challenging area of research; meanwhile flow control and congestion control will be considered as significant fundamentals for the traffic control especially on the...
Filled function method is an approach to find the global minimum of nonlinear functions. Many problems, such as computing, communication control, and management, in real applications naturally result in global optimization formulations in a form of nonlinear global integer programming.This paper gives a modified filled function method to solve the nonlinear global integer programming problem.The properties...
Resource and admission control function (RACF) is the main part of resource management architecture in next generation networks (NGN). In this paper we analyze the effect of different resource control schemes in RACF architecture on some network performance parameters and show that a dynamic policy for scheme selection will outperform the static one. The dynamic policy results in better resource utilization...
We have carried out analysis of dynamic network traffic for WDM networks through simulation in order to reduce blocking probability. Our proposed algorithm optimally utilizes the available network resources by reducing control overheads. Previously the algorithm was proposed for source-initiated reservation with global state information. It was proved that source initiated reservation performs better...
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