From the heavy cordless phones of the 1980′s to the smart phones of today, cellular phone technology has undergone a incredible change. But have you ever wondered how you can call to your well wisher in the whole world with the usage of a mobile phone? You also have knowledge about the main features such as WAP and GPRS from the cell phone vendors and service providers. But you must aware of what they really mean?
There are numerous mobile technologies. So next time, when you are going to purchase a phone, you should know what technologies it has.
Generations of mobile communications
In the late 1970s, the first generation (1G) of mobile communications was introduced; it was primarily used for voice transfer. Second generation (2G) systems came into existence in the early 1990s and was further developed to 2.5G, which includes high technologies such as TDMA, GSM and CDMA. These technologies were used for voice and data.
The next generation of mobile communications is 3G which 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; for each call, FDMA uses separate frequencies. For instance, if there are four stations, each will receive their own frequency. So there is no interference between them. It 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 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 such as Reliance IndiaMobile, TATA Indicom, BSNL and MTNL’s Garuda all use CDMA2000 technology and its variant CDMA1x.
Global system for mobile communications (GSM)
GSM is now the worldwide standard technology for mobile communications. It is developed on TDMA protocol in Europe. GSM provides a high level of security, globally accepted technology standards and superior sound quality.
For any GSM phone to work, it needs a Subscriber Identity Module (SIM), a card which contains your telephone account information. So, an Indian GSM phone can be used in any part of the world.
Wireless technology platforms
1) GPRS
GPRS (General Packet Radio Services) is an enhancement to GSM technology that integrates GSM and IP technology. GPRS offers to access the Internet at the very high speed. So you can check your email on the move and surf the Web at very high speed. Currently BPL Mobile and Hutch (Orange in Mumbai) offer GPRS services in India.
2) WAP
In this high technology age, people on the move need any-time access to the Net. This is where WAP comes in. It facilitates us to Internet access from cell phones. It is an open standard for wireless protocols that is independent of the service providers. The cell phone must have a WAP browser to display Web content. Now-a-days, cell phones often come equipped with WAP browser and GPRS technology.
WAP and GPRS also enable the user to download games, send mail and even transfer your messages to your PC.
3) EDGE
The new EDGE (Enhanced Data GSM Environment) interface has been developed specifically to meet the bandwidth needs of 3G. This technology is promoted by Ericsson, it also offers high-speed data transfers over GSM networks with just a software upgrade to the handset. EDGE technology allows speeds up to 384 kbps.
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Latest Mobile Communications Technologies
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There’s a growing trend of International Appliances, International Electronic, 110/220 volt DVD player, Multi System TV, 220 Volt Appliances, Digital Pal Camcorder in the electronic market. The latest advancement in today’s mobile technology is GSM, which is popularly known as Global System for Mobile Communication. More than 212 countries and territories use this new system.
GSM differs from its predecessors in terms of advanced technology and digital signaling. It consists of excellent speech channels. This technology could be used all across the world. This expertise allows the device to communicate with a mobile communication. Mobile connectivity is provided by it through antennas where the network identifies the mobile. You can easily get the advantage of high quality digital voice without using wires.
We are one of the well known resellers of GSM phones. The phone which we have consists of all of the technological innovations and features that you would be expecting. It consists of a 2.2″ touchscreen which have the ability to support SMS, MMS, WAP, MP3, MP4, T-flash, video recording, photo taking and more.
Considered as the second generation (2G) mobile phone system, our GSM phone is laced with lot of offers and benefits. The phone consists of fax functionality, high speed data, call privacy, secure communications, integrated voice mail, paging and SMS, etc. It has pioneered a low cost network carrier, alternative to voice calls, which is now supported on other standards as well.
Our GSM cell phone works all around the world. It allows uninterrupted connectivity. This system helps in international roaming, If you are a frequent traveler moving around in different parts of the world. Acting as a great boon for people who cannot afford to be out of touch for long, GSM phones are the best. It has many advantages such as having worldwide Emergency telephone number, which makes it easier for international travelers to connect to emergency services.
Due to rapid technology, Our GSM cellular phone allows better network transmission speed. It comes with a SIM card which can be easily detached from the handset. This card carries all necessary information like your phone number and code. All of the information offered is essential to get clear network coverage. Normally, all GSM handsets are locked by us, but it will be easy for you to release the lock. We are a dependable source from where you can easily buy your GSM phone and the product which you will get from us will be very much useful for you.