The service area of a cellular network is divided into cells. Users are connected to base stations in the cells via radio links. Channel frequencies are reused in cells that are sufficiently separated in distance so that mutual interference is below tolerable levels. When a new call is originated in a cell, one of the channels assigned to the base station of the cell is used for communication b...

A feedforward layered network implements a mapping required to control an unknown stochastic nonlinear dynamical system. Training is based on a novel approach that combines stochastic approximation ideas with backpropagation. The method is applied to control admission into a queueing system operating in a time-varying environment.

This paper proposes a simple but effective admission control algorithm for integrated services packet networks. The admission control scheme, based on stochastic control, aims at ensuring user discrimination, by enforcing different call blocking probabilities. The queueing behavior of reservations is analytically characterized in the absence of admission control. From this, call blocking probab...

Anycasting becomes an important research topic recently especially for the replicated servers where availability and fault-tolerance are critical for quality of service. With anycasting, applications can request the “nearest” server for provision of a desired services. In this paper, we study efficient Admission Control for Anycast (ACA) flows. We focus on algorithms that perform smart destinat...

This paper evaluates call admission control algorithms for a cellular or microcellular system. Algorithms are evaluated based on two Quality of Service (QoS) metrics: the new call blocking probability, which is the probability that a new call is denied access to the system, and the forced-termination probability, which is the probability that a call that has been admitted will be terminated pri...

Overprovisioning and redundancy has contributed towards better survivability and performance in networks, but has led to inefficient use of energy. Proposals for energy aware networks of the near future aim to reduce the energy consumption by switching off or putting to sleep individual network devices. Here we propose a mechanism that is taking this concept once step further through the use of...

asthma is one of the most common diseases in childhood, which has been increased during last decade because of epidemiological pattern changes with climate and industrialization of the communities. there are some controversies on the relationship between air pollution and asthma. tehran, as the capital of iran, is one of the densest populations and is one of the most polluted cities in the worl...

conclusions: since, there are few relevant studies in our country, recent studies on infectious diseases could be used for national planning and medical requirements’ preparation, it seems that periodical assessments of these diseases are mandatory. results: during the study, 4676 children, aged 1 month to 14 years were admitted and 29% (1357) of them were diagnosed with infectious disorders, 1...

In this paper we study measurement-based admission control for bu!erless multiplexing, which is very attractive for real-time tra$c. We "rst discuss a novel large deviations (LD) approach to measurementbased admission control. We then provide an extensive review of the existing literature on measurementbased admission control. We conduct simulation studies with traces of MPEG 1 encodedmovies to...