In traditional cellular systems with xed base stations the channel reuse pattern is static and deterministic. When the cell layout is dynamic, due to the mobility of base stations, the cluster of cells within co-channel interference range changes with time. Consequently, the channel reuse pattern is highly dynamic. Moreover, base stations also need wireless channels to communicate amongst thems...

The growing awareness towards energy efficient cellular networks has paved way for new technologies in designing green cellular networks. According to technical analysts, the base stations are the most energy intensive part of a typical cellular network. Saving power in base stations is therefore the primary focus in green cellular networks. The main goal of designing green base stations is for...

Employing multiple base stations is an attractive approach to enhance the lifetime of wireless sensor networks. In this paper, we address the fundamental question concerning the limits on the network lifetime in sensor networks when multiple base stations are deployed as data sinks. Specifically, we derive upper bounds on the network lifetime when multiple base stations are employed, and obtain...

The power consumption of wireless access networks will become an important issue in the coming years. In this paper the power consumption of base stations for mobile WiMAX, fixed WiMAX and UMTS is modelled. This power consumption is evaluated in relation to the coverage. For a physical bit rate of 2 Mbps, a power consumption of approximately 5600 W and a range of 1 km is obtained with UMTS. Fix...

The evolution of mobile communications, during the last decades, has led to a rapid increase in the number of users that mobile operators have to serve. To cope with this increase, mobile operators increment the number of base stations they are using resulting in an escalation of the corresponding energy footprint. This is why; the reduction of the total energy that is consumed from base statio...

One of the main design issues for a sensor network is conservation of the energy available at each sensor node. We propose to deploy multiple, mobile base stations to prolong the lifetime of the sensor network. We split the lifetime of the sensor network into equal periods of time known as rounds. Base stations are relocated at the start of a round. Our method uses an integer linear program to ...

Given a hexagonal mesh of base stations in cellular systems we consider the problem of nding a cover of disjoint clusters of base stations which generate multiple types of traac among themselves. The problem diiers from general graph partitioning problems in that it considers not only communication costs but also the underlying topology among base stations, such that base stations in a cluster ...

This work presents improvements to a telecommunication service planning tool for optimal positioning of base stations presented in previous work. The uses propagation loss model based on the K-Nearest Neighborhoods classifier since its conception. original objective this is optimize transmitting towers frequencies 2.1 GHz and 2.6 given environment, maximizing coverage area. improvement proposed...

We consider two optimization problems for cellular telephone networks with interferences, which address the positioning of base stations (on given locations) with the aim to maximize the number of supplied demand nodes and minimize the number of stations that have to be built. It is known that in general, these problems are NP-complete and even hard to approximate. Here we show that the Euclide...