Location-based services on mobile phones: minimizing power consumption

2012 ◽  
Vol 11 (1) ◽  
pp. 67-73 ◽  
Author(s):  
M. B. Kjasrgaard
Keyword(s):  
Power Consumption ◽  
Mobile Phones ◽  
Location Based Services

Bluetooth Hands Free System for Fixed Telephone Research

2012 ◽  
Vol 198-199 ◽  
pp. 1603-1608
Author(s):  
Qing Hua Shang ◽  
Ping Liu
Keyword(s):  
Power Consumption ◽  
Low Power ◽  
Mobile Phones ◽  
Daily Life ◽  
Low Cost ◽  
Low Power Consumption ◽  
Wireless Technology ◽  
Free System ◽  
Wireless Technologies ◽  
The Stability

Wireless technology has walked into the People's Daily life, Bluetooth technology comes to the fore in so many wireless technologies with its low power consumption, low cost and other characteristics. Bluetooth technology is used widely, we can see it in mobile phones or in our cars, it seems that Bluetooth technology has penetrated into every aspect of our lives. Even so, the combination of Bluetooth technology and fixed telephone still has a very big development space. If the stability of the fixed telephone combined with the flexible of Bluetooth technology, it will give the life of people a lot of convenience. This paper will introduces the Bluetooth hands free system for fixed telephone, it is such a product that it will make Bluetooth technology and common fixed phone combined, and make it a reality that people can use common Bluetooth headset to answer or call a fixed telephone.

scholarly journals Mobile phones, batteries and power consumption: An analysis of social practices in Portugal

2016 ◽  
Vol 13 ◽  
pp. 15-23 ◽  
Author(s):  
Ana Horta ◽  
Susana Fonseca ◽  
Mónica Truninger ◽  
Nélia Nobre ◽  
Augusta Correia
Keyword(s):  
Power Consumption ◽  
Mobile Phones ◽  
Social Practices

scholarly journals Effect of changes in supply voltage on power consumption of digital CMOS delay lines

2016 ◽  
Vol 4 (4) ◽  
pp. 118-121
Author(s):  
Pankaj Prajapati ◽  
Dr. Shyam Akashe
Keyword(s):  
Power Consumption ◽  
Mobile Phones ◽  
Delay Line ◽  
Supply Voltage ◽  
Minimum Amount ◽  
Delay Lines ◽  
Performance Parameters ◽  
Digital Cmos ◽  
Trade Off ◽  
In The Beginning

In the beginning of the last decade, battery-powered hand-held devices such as mobile phones and laptop computers emerged. For that application we have to design a device which will consume minimum amount of energy. For that reason in this article we focused on power consumption and how to calculate the power. In this paper, an analysis of different delay lines based on CMOS architecture has been done. The effect of supply voltage on digital delay lines has been analysed as how supply voltage affected the value of power consumption of the digital delay line. After the analysis of those performance parameters, the trade-off has been made for better performance of delay lines.

Essential Technologies for Location-Aware Mobile, Online Map Prefetching, and Caching

2012 ◽  
pp. 303-323
Author(s):  
Wen-Chen Hu ◽  
Naima Kaabouch ◽  
Lei Chen ◽  
Ming Yang
Keyword(s):  
Power Consumption ◽  
Location Based Services ◽  
Transmission Time ◽  
Mobile Users ◽  
Handheld Computing ◽  
Battery Power ◽  
Location Aware ◽  
Tile System ◽  
First In First Out

Map navigation is one of the most popular applications used by mobile users. At the same time, it is also one of the time- and resource-consuming applications. Various methods such as most-recently used and first-in, first-out algorithms are used to reduce the map transmission time and delay. One of the popular methods is online mobile map prefetching and caching. However, the mobility and location features of mobile users are usually left out by these methods. Caching and prefetching maps based on a mobile user’s location would greatly reduce the transmission time and hence the battery power consumption. For example, if a user is visiting a town, prefetching the maps of nearby interesting stores and caching the maps of the visited, neighboring landmarks would help the user’s visitation experience and save the transmission time. Online mobile map prefetching or caching is useful, but is not widely employed because it involves several different subjects and developers usually are not familiar with all of them. This chapter intends to relieve the problem by introducing essential technologies for online mobile map prefetching and caching so more developers can start working on this kind of project or research. It consists of four themes: (1) green handheld computing, (2) location-based services and programming, (3) map tile system, and (4) location-aware map prefetching and caching methods. A summary is given at the end of this chapter.

scholarly journals Electromagnetic field as the wireless transporter of energy

2012 ◽  
Vol 25 (3) ◽  
pp. 171-181 ◽  
Author(s):  
Stanimir Valtchev ◽  
Elena Baikova ◽  
Luis Jorge
Keyword(s):  
Electromagnetic Field ◽  
Power Consumption ◽  
Mobile Phones ◽  
Electronic Equipment ◽  
Energy Sources ◽  
Power Equipment ◽  
Significant Development ◽  
Intelligent Machining ◽  
Higher Power

The beginning of the XXI century brought a further significant development in the use of autonomous electrical and electronic equipment. The low consumed power equipment is widely used: laptops, mobile phones, PDA, wireless headphones, implants, razors, toothbrushes etc. The higher power consumption equipment is also starting to work wirelessly, e.g. the intelligent machining complexes, robots, the forklift trucks, and electric or hybrid cars. The desired autonomy and transportability of the equipment requires autonomous energy sources. Until now, almost without exception, the autonomy is guaranteed by electrochemical power with its main problem: to charge, replace and dispose batteries. Engineering world is seeking a non-conventional, wireless transfer of energy, both for charging batteries and directly supplying the equipment. The electromagnetic field is the usual carrier for telecommunicated information. Here an example is shown of electromagnetic transfer of energy, avoiding even the use of ferromagnetic cores.

Internet of Things and Location-Based Services

2020 ◽  
pp. 213-237
Author(s):  
Shaveta Bhatia
Keyword(s):  
Wireless Networks ◽  
Internet Of Things ◽  
Mobile Computing ◽  
Mobile Phones ◽  
New Technologies ◽  
Location Based Services ◽  
Mobile Users ◽  
Data Networks ◽  
Internet Applications ◽  
Geographic Locations

The progressive rise of mobile computing devices and wireless networks have created a lot of interest in location-based systems and services. The involvement of internet applications in almost every field has changed our lives. Location-based services are the services provided to mobile users according to their geographic locations. Each user wants to get the service according to his/her own interest. The general user's actions in location-based services are locating, searching, navigating, identification, and checking. The location identification has now become a critical attribute. Today, internet of things in the field of location-based services (LBS) provide services to the mobile users by explore the location depending on the geographical coordinates for their valuable needs. Mobile phones that are equipped with new technologies and supported by the presence and development of broadband mobile data networks have created new opportunities for the processing of location-based applications.

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