The Infona portal uses cookies, i.e. strings of text saved by a browser on the user's device. The portal can access those files and use them to remember the user's data, such as their chosen settings (screen view, interface language, etc.), or their login data. By using the Infona portal the user accepts automatic saving and using this information for portal operation purposes. More information on the subject can be found in the Privacy Policy and Terms of Service. By closing this window the user confirms that they have read the information on cookie usage, and they accept the privacy policy and the way cookies are used by the portal. You can change the cookie settings in your browser.
Mobile phones have become essential part of our life in the last 15 years. All mobile phones have a lot of common features, but their individual style or design, and special functions make these devices salable. However there is an important accessory - the charger - which does the same task to reach the same goal from the beginning, but on a wide range of implementation. A few years ago, GSMA (in...
"Vehicle-to-Grid" (V2G) power will be a new green energy scheme in which electric or plug-in hybrid vehicles communicate with the Smart Grid to sell demand response services by either delivering electricity into the grid or by throttling their charging rate. Due to high vehicular speed, sporadic connection, limited communication range, and large volume of data that need to be transmitted,...
In this paper the possible ways of improving the configuration of a fault-tolerant system, which is the basis for a uninterruptible power supply with the purpose of enhanced reliability, are given and reliability models for research into performance of these technical solutions have been developed.
We investigated consumer attitudes towards energy consumption of mobile phones and mobile services with a questionnaire study among Finnish university students (N = 150). Our questions covered topics like how battery consumption affected phone and application selection and configuration, what effect different battery levels had on user behavior, what kind of recharging policies were used, how satisfied...
Vodafone, China Mobile and Huawei have started a joint green technology programme to advance renewable energy application in wireless networks to reduce diesel consumption and to contribute substantially to CO2 emission reduction. Three experimental BTS sites, an NFB PV site, a macro BTS PV-diesel site and a distributed BTS PV-wind site, were set up to verify and optimize system design and implementation...
Recently, the mobile phones are evolving into mobile multifunctional terminals with the incorporation of various useful functions; the display devices also have advanced in terms of size, design, and resolution as a user interface of the mobile phone. Many low power display techniques have been proposed for example dynamic luminance scaling, liquid crystal orientation shift, variable frame refresh,...
Bangladesh is experiencing a rapid increase in teledensity after the advent of mobile telephony at the end of the last millennium. At the same time the power crisis is rising. The success of rising teledensity depends on the availability of reliable power. There are many telecom service providers in Bangladesh and it is predictable that in the near future the number of operators will increase. So...
In the event of a natural disaster, mobile networks are expected to provide an added value to search and rescue operations. However, these networks and their services are not optimized with the requirements for this support in mind. A critical aspect is the need for several hours of backup power availability, something not usually required during AC grid outages resulting from other technical reasons...
Telecom companies meet a major challenge in finding appropriate power solutions in the rapid roll-out of mobile networks. Radio base stations (RBSs) require continuous power feeding, but are often placed in non-electrified areas where the only alternative is locally produced power, off the grid. This results in large power - and operational cost, low reliability and environmentally inferior solutions...
Since the year of 2006, China Mobile had carried out field tests on hundreds of strings of batteries to verify how conductance/impedance tests could indicate the battery's health condition and its capacity, results of which has been presented in 2007 Intelec paper. With the conclusions drawn from the validation filed tests, China Mobile started to apply the ohmic testing technology in the practice...
Advances in semiconductor technologies and wireless communication are contributing to the rapid growth of the mobile devices market. They have a large number of applications but all of them depend on their battery lifetime. Therefore we present in this paper how power benchmarks can be used to characterize power consumption of battery-powered devices running different applications.
Set the date range to filter the displayed results. You can set a starting date, ending date or both. You can enter the dates manually or choose them from the calendar.