3G Classification and Specifications

International Mobile Telecommunications IMT-2000 which is popularly known as 3G or 3rd Generation standard for mobile phones and telecommunication services to make 3G globally applicable. It consists of two rival groups GSM and CDMA which have set 3G standard and guidelines. Both group have competition with each other and also no compatiblity with each others network. 3GPP 3rd Generation Partnership Project is group of GSM telecommunication companies and associations from Europe ,Japan ,China ,North America ,South Korea. Formed in 1998 and has set UMTS (also known as W-CDMA) for 3G upgrade for GSM technology. It has 250 3G WCDMA networks in 100 countries and 275 HSDPA 3.5G networks in 125 countries of Asia ,Europe ,USA ,Canada.

3GPP2 3rd Genearation Partnership Project2 group was formed in 2008 and consists of CDMA telecommunication companies and participating associations from Japan ,China ,North America ,South Korea which have set CDMA2000 (also known as EVDO) for 3G upgrade in CDMA technology. Supported by 325 operators in 130 countries which are mainly from South Korea ,Japan and partially in North America ,China ,India.

Some operators provide both 3G GSM & CDMA2000 both standards

Here I'm gonna speaks in detail about various 3G GSM Standard ,Classification & Technical Specifications

3G UMTS Universal Mobile Telecommunicaton System uses W-CDMA WideBand-Code Division Multiple Access as main interface.

In Japan it is called FOMA Freedom Of Mobile Multimedia Access. In China known as TD-SCDMA Time Division-Synchronous Code Division Multiple Acess. Basically all these are variants which uses different radio interface. WCDMA networks can give speed upto 384kbps maximum

UMTS networks can be further enhanced via software upgrad as follows

• 3.5G HSUPA Upgrades the uplink for higher data transfer speed of 1.4 ,1.9 ,5.8Mbps. HSUPA name is given by Nokia and used in its phones only but 3GPP does not approved this name.
• HSDPA High Speed Downlink,Packet Access having faster speed from 1.8 ,3.6 ,7.2 to 14Mbps
• 3.75G HSPA High Speed Packet Access is a combination of HSUPA & HSDPA that improves the performance further and attain speed 21Mbps to 28Mbps.
• HSPA+ Further speed increase available with HSPA Evolve or HSPA+ from 42Mbps to 84Mbps
• 3.9G HSOPA Some networks dubbed it as 4G . This project is known as Long Term Evolution and uses OF-DMA Orthogonal Frequency-Division Multiplexing which will offer data rate at 170Mbps for uplink and 320 Mbps for downlink

UMTS operates on frequencies of 850/900/1700/1900/2100 MHz Most 3G phones support at least two frequencies. No 3G phone available which supports all these frequencies. It depends on service provider what speed and frequency it adopts for its 3G network and what type and category of 3G compatible phone you have to fully exploit ,utilize and enjoy the services with speed ever..

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HOW TO USE BBM CHAT ON YOUR PC

Most people love blackberry phones because of its numereous features,while some too, don't like it but the chat (BBM) get's them attracted, I am an example of such people, i really don't think i'll have any thing to do with blackberry devices, i refer them to smart toys rather than smart phones. "Just joking" , BlackBerry fans don't get mad at me. Due to my interest in the BlackBerry chat, not wanting to purchase a BlackBerry device i decided to find a way i would use this chat without a blackberry, know i've just found how i can use BBM on my PC. I know sharing this tutorial will be of great help to people of my kind who don't seem to like blackberry.

LETS GET STARTED

Below are what this tutorial requires 1. Android SDK. (you can get it here.) *. BBM APK. (you can get it here.) If you've just downloaded the above requirements, we should keep the ball rolling. Follow The Steps Below To Run BBM(.apk) On You PC Step 1. You will need to go to open the SDK Manager from the extracted adt-bundle folder. Step 2. Now open your window and select Tools Manange AVDs... Step 3. Create a new Android Virtual Device with RAM greater than 512 MB and then start the created Virtual Device. Step 4. The downloaded BBM should now be copied to the Extracted Folder /sdk/platform-tools/. This is how the files folder link should be /sdk/platform-tools/BBM.apk Step 5.. After copying move to the folder /sdk/platform-tools/ using file explorer. Step 6.. Now Select File and Open Command Prompt within the platform-tools folder.4. And then just enter the command in the command prompt without the quote “adb install BBM.apk” Step 7. Wait for some munites and your BBM will be installed. Now your BBM is installed, lunch the app from the App launcher. And you are good to go.