Wednesday, 20 May 2009

Mobile Phones

Communication is vital for effective transfer of information or idea. The effectiveness of communication depends on the means adopted to communicate. The choice is unlimited for a person today. The earlier known signs of communication were speech, sign language (including finger spelling into the palm of the deaf/blind), writing, Braille, body movements, and facial expression. This kind of communication was practiced among small groups. Communication on larger scale involves various forms. Technology has added impetus to the process. It has made the task of communication all the more easier.

1. Email - This is used to transferring files before a face-to-face meeting or updating on developments during the day. It is also a formal mode of communication. One can also use it as a means of non-urgent communication.

2. SMS - Short message service or SMS, is similar to email. It is difficult to ignore an SMS. It helps a person communicate by texting. It is non-intrusive too.

3. Phone call - It is used to speak or communicate with a person urgent. The best thing one can use it to call anyone from any place which resolves issues regarding urgency.

With the advent of mobile phones, the world has indeed been brought much closer. Initially, very few could afford it. The constant demand led to a massive production coupled with advancement in technology. It is no more confined to a class or section of people. Today, we can find people from the lowest strata using it; be it a cobbler or a day worker.

Mobile phones are available with additional features such as Bluetooth, email, camera, music, etc. It is no more confined to make a call or send text messages. It is meant for multiple purpose usage. They are available in various hues and colours too. The latest features are All in One Instant Messaging and Download All in One Instant Messengers. Many users have expressed their satisfaction about the services.

Instant messaging allows a user stay in touch round the clock with many people. A user can log in to accounts on multiple chat networks simultaneously. A user can consolidate Gchat, AIM, Yahoo Messenger, MSN Messenger, ICQ, and social network profiles in a single application. This enables a user chat with friends on MSN, talk to a friend on Google Talk, while sitting in a Yahoo chat room all at the same time. It is a marvel of technology indeed. It saves one from the hassle of downloading various applications and cut short the time being spent on each application. Technology has indeed undergone a sea change and made mobile phones a handy tool much on the lines of a PC.

Friday, 1 May 2009

Working Principle of Bluetooth Technology

Bluetooth was the brainchild of the SIG (Special Interest Group). This SIG included Intel, Toshiba, Nokia, IBM, Compaq, Dell, Motorola, HP, Lucent, and Samsung to name a few. They all came together to set up a short frequency wireless technology for transferring data.

Bluetooth is a communication protocol. It is a like a language that devices use to wirelessly communicate between each other. It is in fact based on a Master/Slave operation format. Pico net is a term used to describe a network formed by one device and all other devices detected in its range. In single coverage are around 10 Pico nets can co-exist. A master can connect to more than one slave simultaneously. In reality, the master keeps switching between slaves. Bluetooth links two Pico nets to form a larger network. This works over a short range and can be used to establish connections between PDAs, mobile phones, laptops, digital cameras, printers, scanner, and many other electronic gadgets.

Establishing a connection using Bluetooth is a complicated process. Initially, the device stays in a "Passive state", i.e. it is just in contact with the network, but not performing any activity. Next the connection establishment process begins with the inquiry process. "Inquiry" is a request sent by the master to all the devices found in its range. Whichever devices receive this inquiry send a response with their respective addresses. Now the master chooses one address and synchronises with its access point. This process known as the "Paging technique" involves alignment of its clock and frequency with that of the access point.

Next in line is the "Service Discovery" phase, wherein a link is established and the master device enters the access point using the Service Discovery Protocol. As a result of linking, a "Communication Channel" is to be created. Sometimes the access point may include a security mechanism and you may need to know the encryption key or in common terms the PIN. Once the PIN is sent and received and confirmed a communication is established. Finally the master and slave can use the communication channel to transfer data and information.

Thus Bluetooth is neither a broadband nor a long distance networking technique. It is a Personal Area Networking technology that can be used in a number of important applications. First of all, Bluetooth technology uses the same frequency range as the Wi-Fi system. It only requires a careful coordination of the various frequencies with the perfect transmit and receive timings between various devices. Finally, the enhanced version of Bluetooth is expected to use Ultra-Wide Band frequencies that contributes increased data rate and improved signal strength.

Thursday, 23 April 2009

Enjoy the Offers and Schemes With Latest Mobile Phone Deals

Possessing modern gadgets has almost become a need for all of us. People want a medium, by which they can contact with their near-dear ones anywhere without any hassles. But a very common aspect, that should be kept in mind while buying innovative handsets is that one should go for the gadgets that provide worldwide connectivity. In this context, the latest devices that come latest mobile phone deals are good option to meet the network requirements.

Among the latest deals, the contract phones have become quite popular among a large number of people. One of the astonishing aspects is that they are quite economical and cost effective. The call and messaging charges on such handsets are comparatively low as compared to the other handsets. People do not have to pay a monthly line rental. You have to sign a fixed contract of 12 to 18 months. After signing a monthly rental as per your need, you will get the connection for the time period for which the agreement has been made between you and your service provider. Hence, with contract gadgets, there is no tension of talk time and connectivity. Such widgets are meant to give the users an unlimited talk time to provide them with an uninterrupted communication with others. So, contract devices with latest mobile phone deals are highly beneficial to people.

Once you avail contract deal, there is no need to pay any money till the specified time period is over. Under this plan, the users get some free calls, messages and so on. Whereas, the rates of such a plan would depend on your network service provider that you have chosen. Such a deal or plan also permits you to make unlimited calls by paying their fixed charges. A large number of other schemes also come associated with various kind of such contract plans. Some of the common schemes include free gifts like laptops, iPods, free handsets and many more. You can also enjoy with free talk time, free or low call rates, free text messages and many other. Furthermore, there are so many websites that are made available for the users, which give every detail about the latest Mobile Phones deals that are offered by numerous brands. These websites elegantly provide the facility of comparing all the offers and cheap plans of different manufacturers quite easily.

It is not needed to walk all around the mobile phone shops in the market. Rather, you can just browse the Internet that would guide you through all the offers and schemes in a few minutes. The individuals can also take the information from several offline mobile phone retailers which offer contract mobile phones on cheap rates which you can select as per your interest.

Nokia N96, Samsung Tocco Ultra, LG KS360 Blue are some of the contract mobile phones that have been integrated with advanced features and perceptible performance. These handsets have been provided with latest features like Bluetooth, WAP browsers, FM radio, strong battery etc. You can easily browse the websites on these most stylish and and sleek devices. All these above mentioned gadgets are available with latest mobile phone deals which would surely match all your requirements. Hence, do not do not lag behind to own such wonderful widgets with lucrative offers and deals.

Cell Phone Radiation Exposure

What is really the truth regarding the cell phone radiation exposure? What do we not know that is hurting us?

I really did not plan on doing research on cell phone radiation exposure, it kind of happened. I was researching information when I came across a recent article in the New York Times. The article made me think. The article made me hungry for more information. I kept diving deeper into the truth. The information I found made me think about my family, my friends, my friend's children, my neighbors....

I pictured the parking lot that I occasionally drive by. It is at the high school at dismissal time, full of teenagers. One by one I could see them with their cell phone up to their ears. I thought of the shopping mall and the number of teenagers with their cell phone up to their ears or seen feverishly texting one right after another. What was the cell phone radiation exposure doing to them?

The thought frightened me some but not as much as the thought of the number of younger children using cell phones now or worse yet playing with the old phones that their parents stopped service on. I hate to admit I had even allowed my children to play with a cell phone once upon a time.......

All I kept thinking about was these innocent children, teenagers, families that one day might be looking at a life threatening diagnosis or problems with their health. As a registered nurse I could envision the treatments, medications, and how life can change in a moment with one test results.

I came across an article that was in the New York Times dated June 3, 2008 written by Tara Parker-Popo. It was titled" Experts Revive Debate Over Cellphones and Cancer What do brain surgeons know about cellphone safety that the rest of us don't?" The article was lengthy. I would recommend reading it. I have included part of the article Last week, three prominent neurosurgeons told the CNN interviewer Larry King that they did not hold cellphones next to their ears. "I think the safe practice," said Dr. Keith Black, a surgeon at Cedars-Sinai Medical Center in Los Angeles, "is to use an earpiece so you keep the microwave antenna away from your brain."

Dr. Vini Khurana, an associate professor of neurosurgery at the Australian National University who is an outspoken critic of cellphones, said: "I use it on the speaker-phone mode. I do not hold it to my ear." And CNN's chief medical correspondent, Dr. Sanjay Gupta, a neurosurgeon at Emory University Hospital, said that like Dr. Black he used an earpiece.

"Some of the research suggests a link between cellphone use and three types of tumors: glioma; cancer of the parotid, a salivary gland near the ear; and acoustic neuroma, a tumor that essentially occurs where the ear meets the brain. All these cancers are rare, so even if cellphone use does increase risk, the risk is still very low.

Last year, The American Journal of Epidemiology published data from Israel finding a 58 percent higher risk of parotid gland tumors among heavy cellphone users. Also last year, a Swedish analysis of 16 studies in the journal Occupational and Environmental Medicine showed a doubling of risk for acoustic neuroma and glioma after 10 years of heavy cellphone use.

Along with Senator Edward M Kennedy's recent diagnosis of a glioma, a type of tumor that critics have long associated with cellphone use, the doctors' remarks have helped reignite a long-simmering debate about cellphones and cancer."

Later in the article the writer, Tara Parker-Pope quotes concern physicians have regarding children and the long term use especially since the skull is thinner than the adult along with the development and growth of the brain.

After I read this article it affirmed my concerns about cell phone radiation exposure. I wonder what will happen in another 10 years to our children. With all the research out there now why are we not proactive about the cell phone radiation exposure? Perhaps it is the nurse thinking wanting to be proactive and intervene before it becomes too late. It is not surprising though that the population as a whole does not do everything to prevent the worse case scenario. The medical community would like to be more proactive to help achieve a better health but sometimes it is a struggle.

I began my research of any products out there that could help to absorb the radiation and change the future of our children. Too bad the cell phone companies did not catch on.

Thursday, 16 April 2009

Mobile Computing

Since the present technology is wholly based on wireless and mobile devices and networks, we have to make a study on the topic 'Mobile computing'. This assignment is all about the applications, challenges of 'Mobile Computing'. We are going to discuss the importance of 'mobile computing' in telecommunication technology and other fields. We are going to study the pros and cons of mobile computing field by analyzing its significance in industry and anticipating its future. We are going to examine the application of Mobile Computing in all fields like telecommunication, emergencies etc...

The assignment would give an idea about the requirements arising out of technology. It would also give a perspective on other technologies which complement this technology and about the devices which this technology. We would also discuss about the challenges mobile computing faces now as a technology and also the challenges it is going to face in near future. Elements which affect portability, major phenomenon of mobile computing are also discussed. We would talk about the strengths and development of corporate over this technology. This assignment would also look at the scope of this technology in India and abroad in technical point of view. We would also discuss about the developed protocols like Wireless Session Protocol (WSP), Wireless Transaction Protocol (WTP), Wireless Datagram Protocol (WDP) and mark-up languages like Hand-held Device Mark-up Language (HDML) and Wireless Markup Language (WML) and also about the browsers which is best complement the usage of this technology. The assignment also recommends for designing and developing suitable browsers and protocols, liberalizing licensing restrictions, making devices more user-friendly, strengthening infrastructure for high signals and improving databases for GPS technology. The assignment concludes that Mobile Computing as a technology which would transform the economic and technological system of the nation.

INTRODUCTION:

Mobile computing refers to the technology which enables transmission of data (computing) through portable devices i.e. laptops, cellular phones etc... It can be well described by the phase 'Anyplace, Anytime'. It can be used in corporations, emergencies, cellular phones, transportation, banking etc... Real estate agents can be more productive, by obtaining and gathering place and client information through mobile computing technology on web platform. People can utilize the' golden hours' efficiently in case of accident and other emergencies with the help of CDPD system. It helps marketing people to work easier since with the help of this technology they don't find it compulsory to market their products knocking the doors. Hotels can make of can easily get to know about the damaged items on a floor and they can supervise the activities of their house-keeping staff at the same time. National defense agencies can make a surveillance of what is going around in all nook and corner of the country. With the help of this system information regarding accident type, address can be obtained with much ease. Companies can hold group meetings through videoconferencing and they can access their latest market share information through mobile computing. Companies like Cisco use this technology to supervise and coordinate operations of various departments, without any authoritarian direct supervision. There is another side of this coin too.

Mobile computing has to face a number of challenges in order to deliver its service to it users effectively. Since mobile technology has to overcome distance and spaces, transmission interfaces should support the technology to function properly. Since use of grid is not possible the total power can be derived from batteries. This might be a costlier deal for us in near future. The potential health hazards out of emission frequencies of cellular transmissions, is not discovered yet. Another major concern is the security issues, which is hampered by antisocial, cracking activities. The micro features of mobile computing technology make user so uncomfortable to use it. Using micro keyboards and small screens are so hard-hitting to be brought in day to day applications. The prolonged waiting time due to large accessories and process.

Some of the requirements arising out of this technology:

i) Examining availabilities of networks and selecting them.
ii) Comparing quality and cost parameters.
iii) Copying data on your device.
iv) Encrypting and authenticating.
v) Figuring out resources in external environment.
vi) Accounting the usage cost.
vii) Coping with trends.

The technology encompasses a number of handheld devices for e.g.: laptops, PDA's etc...

Laptops: It's similar to desktop but mainly used for mobile use.
PDA's: It is a hand-held device used for multipurpose such as computing, telephone, internet and networking. Cellular phones: these are the electronic instruments which enable personnel to perform voice and data communication.

Technologies that constitute to mobile computing:
1) Bluetooth: This technology enable users to communicate wirelessly with their digital device through radio frequency waves.
2) Global Positioning System (GPS): It is a technology, which provides three dimensional positing specially, developed for navigation and surveying purposes.
3) General Pocket Radio System (GPRS): This technology allows transmission of information across a cellular network.
4) Wireless Application Protocol (WAP): It enables the access of internet through handheld deices such as mobile phones, PDA etc...
5) Kilobyte Virtual Machine (KVM): It is a light version of JVK which enables the access of single application to be used by different platforms wireless.
6) WLAN: Connecting mobile devices to allow the transmission of data and information within the formed network.
7) Specialized Mobile Radio (SMR): it is a two-way radio system which helps in combining more than one receiver with one repeater.
8) Infrared: communicating very a short range through mobile devices with the help of waves of wavelength in the range of 700nm-1mm.

Elements which affect portability:

1) Operating temperature range: Temperature swings of -20F to 140F range while travelling affects the effectiveness of this technology. To overcome this barrier, fan coolers and heaters are designed to bring the temperature range to 95F-100F.
2) Vibration: Vibrations made by vehicles reduce the life span of computer components especially hard drives.
3) Intensity of light: High intensity of sunlight makes readability too tough.
4) Temperature affects battery power: Lithium batteries perform ineffective to given charging at high temperature. It limits its performance to less than 85%.
5) Touch screens: while working with gloves you can access the system by using the screen.

SCOPE OF STUDY:

The strengths of this technology in near future are going to be the progression in artificial intelligence, compact IC's and high processor speeds. Using 'Artificial Intelligence' for secretarial jobs would be more productive in this 'information age'. Working lifestyle will vary a lot and a flat hierarchical workplace can be built. The future of this technology lies in the hands of the developers, their ability to meet customer needs are most significant. Blue-chip giants like Microsoft and Intel are showing constant innovation to meet their customer's needs. Development of more compatible protocols like Wireless Session Protocol (WSP), Wireless Transaction Protocol (WTP), Wireless Datagram Protocol (WDP) for WAP applications and markup languages like Hand-held Device Mark-up Language (HDML) and Wireless Markup Language (WML) assures high feasibility of its emergence. Now mobiles come with embedded UP. Browser designed minibrowsers to facilitate one to access this technology.

Development of Wimax resulting in obtaining of increased speed of connection and high ease of usage assures the technology's uphill. The upcoming facilities such as the 'Interactive Television' and the 'Video Image Compression' which this technology is going to offer, means pushing mobility to homes, for e.g. home shopping international players have started entering the market, which implies more competition between players and high growth of this technology in India. Development of processors with unmitigated mobility and high capability by Intel assures the bright future of mobile computing. Intel comes up with wimax technology, which operates beyond the limitation of Wi-Fi technology and energy efficient mobile devices which promises a good scope for this technology. Though much challenges 'Mobile Computing', has to face in near future with innovation as strength the technology can come up successfully. The upcoming 4g technology marks the beginning of the rising sun. In future we can see Smartphone and iphones flooding the markets.

RECOMMENDATIONS:
1) Much suitable internet protocols, browsers and mark-up languages should be developed to enhance applicability of mobile computing. In future all cellular phones and mobile devices should be embedded with browsers which supports wireless technology and much compatible protocols and mark up languages must be developed.
2) The infrastructure should be strengthened enough to provide high bandwidth signals thus enabling high mobility. High power servers should be built.
3) The devices could be made more easily used by people. For e.g. standard keyboard for mobile phones, screens with more visibility etc...
4) Licensing for access of technologies related to mobile computing should be made liberal to enable corporate to derive maximum benefits. International players should be allowed freely into the markets
5) Databases should be developed and maximum benefits of GSM technology should be attained.

CONCLUSIONS:

Mobile computing is a significant, sprouting technology. It helps mobile personnel to communicate and interact quicker and easier with the help of a fixed information system and it helps to overcome constraints of geographic location. Mobile computing uses the hardware, software, and technology for interaction and to carry out its other operations. Mobile computing is a flexible and strategic technology that enhances the quality of information provided, accessibility to data, increased operational efficiency, and helps to achieve management effectiveness in an organization.

This technology would be the trend setter for the technological world in future. Although it has to face challenges of low bandwidth, problems with security, poor infrastructure and also some of the inherited problems like small display screen, low durability of batteries etc... By the result of strength and weakness analysis we can conclude that mobile technology is going to transform the whole of our economic and technological system.

Tuesday, 7 April 2009

Mobile Porting and Its Importance in Application Development

Today more and more people in the world are going mobile. With changing lifestyles and easy availability of mobile phone aided with good connectivity, mobile is no more a luxury, it's a necessity. With this change of attitude, people have now realized that mobile is not just a means to talk to each other, it's also a great companion. It serves as your personal assistant, your gaming console, your camera, your mobile office, and a lot more. For business professionals it offers great deal of productivity and usability, for basic users it offers games, fun applications and more such engaging activities. It's all been possible due to numerous applications available today.

Mobile software development companies today are making amazing applications which help you a lot. Many of them started making applications straight away for mobiles, whereas some brought their web versions to mobile, so that their users are never away from them even when they are not at their PCs or laptops. It changed the way people looked at mobiles. Mobile applications are now so essential for some, that it's hard for them to imagine life without it. But with so many available mobile phones, and network carriers, mobile application developers faced a challenge. How could they make an application which could be used on every possible device? Nokia, the market leader today, has a very wide range of mobile phones. Each has various features differences, operating systems, memory capabilities, screen sizes and more such technical jargon. So how can a mobile application be made compatible to run on all these phones with varying capabilities without any issues, and not just Nokia, there are many other manufactures, like Samsung, Sony Ericsson, Motorola, iPhone, Blackberry and lot more.

Mobile applications are therefore needed to be ported to various platforms and devices. This really takes a great deal of effort and its time consuming. For a developer it's a task which takes them away from enhancing or developing new applications. We at Rapidsoft Technologies have been helping mobile application developers to port their applications to various platforms and make sure they can reach the maximum number of users, irrespective of their mobile devices. Rapidsoft is among the leading outsourcing companies in India for mobile porting. We have been porting mobile applications since years now, and have developed a sound infrastructure and understand of the whole process of mobile application porting. No matter what type of application do you use, we can port your application to the intended platform in a customized solution suited to your requirements. Backed by expert professionals and technical capabilities we can handle it very efficiently and cost effectively. We have already ported a number of mobile applications successfully to all popular mobile platforms like Symbian, BREW, iPhone, Blackberry, Windows Mobile, J2ME. We can port in whatever way it suits your requirements, it be handset specific or operator specific. Our porting process follows strict internal standards set by us, and are thoroughly tested, so that no application goes without proper testing

Prepaid Cell Phone Service Plans

When you are thinking about cell phones, you probably want to know whether or not you are going to go with a monthly service provider, or with a pay as you go system. While a monthly service provider might sound like the best option, it isn't as easy as doing a prepaid cell phone plan. There are several important things to consider about a prepaid-cell-phone service plan before you decide to purchase it.

With prepaid-cell phone plans, you are in control of the type of service you get, how much you spend, and how much you are going to be using your service. Unlike a monthly service provider, with prepaid cell phones, you don't pay a flat monthly rate to have your phone. Paying a flat rate can be frustrating if you don't always use your telephone the same amount each month, or if you find that you are not using as much as you paying for. With prepaid flip phones, and prepaid services, you choose how much time you'd like to put on the phone, you buy it, and then you use it.

Most of the plans come with cards that you can use to recharge. Some services come with all types of plans and all types of phones. You can get prepaid- flip-phones, or regular phones. You can even get blackberry-phones. When you purchase a phone for a prepaid-service, the phone will usually come with a few minutes, or units, on it already.

Once you purchase the plan, you'll start it up, and then call a specific number from the phone in order to activate it and to get your cell number. Once is activated, you can start using it. The plan probably came with a few minutes to get you started, but soon you will want to purchase more minutes.

It is easy to use prepaid-cell-phone plans. You simply purchase a card from the store, or buy minutes online, and load them onto your telephone, using a telephone or the internet. Once the minutes are on your telephone, you can use it as you would normally use a regular cell-phone. When you run out of prepaid time, you'll need to purchase additional credits.

When you are using prepaid cell telephones, you'll need to watch out for a few things. Some plans require you to buy a certain amount of minutes per month or per year, in order to keep your number. As long as you stick to the guidelines, you'll have the ease of a cell plan with a price tag you are able to control.