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Mobile Technologies Topic: Mobile Technologies

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gvkumar
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Quote gvkumar Replybullet Topic: Mobile Technologies
    Posted: 12Sep2009 at 3:50pm
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Mobile Technologies

A guide to the latest in mobile communications technology

From the heavy cordless phones of the 1980's to the smart phones of today, cellular phone technology has undergone a tremendous change.

But have you ever wondered how you can call someone across the world using a tiny phone? You might have heard of features like WAP and GPRS from cell phone vendors and service providers. But are you aware of what they really mean?

Rediff Guide to the Net has compiled a guide to make you familiar with today's mobile technologies. So next time you go to buy a phone, you know exactly what they're talking about.

Generations of mobile communications

The first generation (1G) of mobile communications was introduced in the late 1970s; it was primarily used for voice transfer. In the early 1990s, second generation (2G) systems came into existence and was further developed to 2.5G, which includes GSM, TDMA and CDMA. These were used for voice and data.

The next generation of mobile communications is 3G and this delivers data speeds from 384 kbps to 2 Mbps and over wireless interfaces such as GSM, TDMA and CDMA.

Mobile phone access technologies

Frequency division multiple access (FDMA)
The first-generation analog mobile access method; FDMA uses separate frequencies for each call. For example if there are four stations, each will receive their own frequency. Thus there is no interference between them. This reduces interference, but limits the number of users.

Time division multiple access (TDMA)
TDMA allocates unique time slots to each user within each channel, thus allowing many users to access the radio frequency without anyone's interference. Each mobile conversation uses only a particular frequency slot of the time.

Code division multiple access (CDMA)
Commercially introduced in 1995 by Qualcomm, CDMA quickly became one of the world's fastest-growing wireless technologies. 3G CDMA networks provide more capacity for voice traffic, along with high-speed data capabilities, hence many cellular service providers are now building or upgrading to it.

CDMA is used in both 2G and 3G wireless technologies. Indian Cell operators like Reliance IndiaMobile, TATA Indicom, BSNL and MTNL's  Garuda all use CDMA2000 technology and its variant CDMA1x.

Global system for mobile communications (GSM)
Developed on TDMA protocol in Europe, GSM is now the worldwide standard technology for mobile communications. The advantage of GSM is that it provides a high level of security, globally accepted technology standards and superior sound quality.

For any GSM phone to work, it requires a Subscriber Identity Module (SIM), a card that contains your telephone account information. Thus, an Indian GSM phone can be used in USA and other countries too.

Wireless technology platforms: GPRS, EDGE and WAP

What is GPRS?
GPRS, short for General Packet Radio Services, is an enhancement to GSM technology that integrates GSM and IP technology. GPRS offers an always-on, high speed connectivity to the Net. Thus you can check your email on the move and surf the Web at high speeds. Currently
BPL Mobile and Hutch offer GPRS services in India.

What is WAP?
In this hi-tech age, people on the move need any-time access to the Net. This is where WAP comes in. It provides Internet access to cell phones. It is an open standard for wireless protocols that is independent of the service providers. To display Web content, the cell phone must have a WAP browser. Nowadays, cell phones often come with WAP and GPRS technology.

WAP and GPRS also allows you to download games, send mail and even transfer your messages to your PC.

What is EDGE?
The new EDGE ((Enhanced Data GSM Environment) interface has been developed specifically to meet the bandwidth needs of 3G. Promoted by Ericsson, it offers high-speed data transfers over GSM networks with just a software upgrade to the handset. EDGE allows speeds up to 384 kbps.


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maggytwin
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Quote maggytwin Replybullet Posted: 27Dec2010 at 6:59pm
Thanks for this Knowledgeable Information on Mobile Technology.and I think This Innovation can leads to a world where Each and Every People can access the benefits of this and our approach towards dealing with things.
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jlennon
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Quote jlennon Replybullet Posted: 16Feb2011 at 7:00pm
Hi there.. Wow, the infos that you posted are very helpful. Now I know the meanings of the Acronyms like GPRS, EDGE and WAP. Thanks again!:)
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jimmyjhonson
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Quote jimmyjhonson Replybullet Posted: 28Apr2011 at 7:31pm
Mobile phones were vogue over a decade ago and now it has become a necessity for urban crowd and rural development in mobile is the new buzz word for the enterprise. Technology never ceases to evolve, and 3 G technology stands for third generation mobile communications technologies.

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alevatans
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Quote alevatans Replybullet Posted: 15Jul2011 at 10:08am
Now a days mobile is the one kind of necessity for every people. Mobile phones and their arrangement alter actual decidedly from provider to provider and country to country. However the basal advice adjustment of all of them is through the electromagnetic microwaves with a corpuscle abject station.
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stevedonald15
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Quote stevedonald15 Replybullet Posted: 21Nov2011 at 5:59pm
Mobile technology is a collective term used to describe the various types of cellular communication technology.
Q3 has extensive expertise in custom mobile application software development. Our solutions on all the major handheld and smartphone platforms help our clients achieve a faster time to market with an unmatched cost advantage.


Edited by moderator - 17Mar2012 at 5:31pm

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zainab783
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Quote zainab783 Replybullet Posted: 24Dec2011 at 5:41pm
you have provided us such useful and nice knowledge in this wonderful forum so i really inspired from your such nice article here

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hitman
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Quote hitman Replybullet Posted: 06Jan2012 at 12:17pm
I need more details about the Mobile technology Please offer me details which I need.I am frequent guest of the conversation community for gathering details which are  newest. 
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rhettricol
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Quote rhettricol Replybullet Posted: 17Mar2012 at 10:52am
Each and every day in Mobile's technology world you always get new system to use in mobile.  There are lots of talk about Mobile's technology because Mobile is most important  device for people. We can do easily communication with people so mobile is biggest achievement in technology for them founder.

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ronypaul
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Quote ronypaul Replybullet Posted: 17Mar2012 at 4:26pm
Mobile Technology is wast area of communication network.It is always upgrade. Higher and higher technology come in the mobile communication market and people can use this facility of mobile technology.
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