نتایج جستجو برای: base station

تعداد نتایج: 295282  

2004
Thomas Erlebach Riko Jacob Matús Mihalák Marc Nunkesser Gábor Szabó Peter Widmayer

Consider a scenario where radio base stations need to send data to users with wireless devices. Time is discrete and slotted into synchronous rounds. Transmitting a data item from a base station to a user takes one round. A user can receive the data item from any of the base stations. The positions of the base stations and users are modeled as points in Euclidean space. If base station b transm...

2013
Katie Atkinson Trevor J. M. Bench-Capon Henry Prakken Adam Z. Wyner

In previous work we presented argumentation schemes to capture the CATO and value based theory construction approaches to reasoning with legal cases with factors. We formalised the schemes with ASPIC+, a formal representation of instantiated argumentation. In ASPIC+ the premises of a scheme may either be a factor provided in a knowledge base or established using a further argumentation scheme. ...

2009
Y Subramanyam

is one of the most important broadband wireless technologies and is anticipated to be a viable alternative to traditional wired broadband techniques due to its cost efficiency. Being an emerging technology, WiMAX supports multimedia applications such as voice over IP (VoIP), voice conference and online gaming. It is necessary to provide Quality of Service (QoS) guaranteed with different charact...

2011
Ramanpreet Singh Sukhwinder Singh

This paper considers the problem of detecting rogue base station in WiMAX/802.16 networks. A rogue base station is an attacker station that duplicates a legitimate base station. The rogue base station puzzles a set of subscribers who try to get service which they believe to be a legitimate base station. It may lead to disturbance in service. The strategy of attack depends on the type of network...

Journal: :the modares journal of electrical engineering 2009
keivan navaie

it is shown in [1] that the optimal downlink radio resource allocation for non-realtime traffic in cellular cdma/tdma networks can be mapped to a multi-dimensional multiple-choice knapsack problem (mmkp) which is np-hard. in this correspondence we propose a heuristic algorithm with polynomial time complexity for this problem. numerical results indicate significant computational performance impr...

2009
Samir Medina Perlaza Elena Veronica Belmega Samson Lasaulce Mérouane Debbah

We model the interaction of several radio devices aiming to obtain wireless connectivity by using a set of base stations (BS) as a non-cooperative game. Each radio device aims to maximize its own spectral efficiency (SE) in two different scenarios: First, we let each player to use a unique BS (BS selection) and second, we let them to simultaneously use several BSs (BS Sharing). In both cases, w...

Journal: :IEEE Journal on Selected Areas in Communications 2014

Journal: :IJBDCN 2013
Josip Lorincz Ivana Bule

An overview of research activity in the area of powering base station sites by means of renewable energy sources is given. It is shown that mobile network operators express significant interest for powering remote base stations using renewable energy sources. This is because a significant percentage of remote base station sites on the global level are still diesel powered due to lack of connect...

Journal: :Wireless Communications and Mobile Computing 2014
Juan Chen Hongli Zhang Xiaojiang Du Binxing Fang Liu Yan

A base station is the controller and the data-receiving center of a wireless sensor network. Hence, a reliable and secure base station is critical to the network. Once an attacker locates the base station, he or she can do many damages to the network. In this paper, we examine the base station location privacy problem from both the attack and defense sides. First, we present a new attack on bas...

2016

Modern cordless telephones offer an ECO mode. When this is activated the base station, when idle, does not emit or emits only to a much lesser extent. In addition, the range of the base station (and thus the radiation strength) can be reduced in some models. During the conversation the emission of the handset (and sometimes the base station) is dynamically reduced, depending on the quality of t...

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