Monday, 26 December 2011

Broadband – Overview

Broadband Internet access, often shortened to just "broadband", is a term describing a service that provides a connection to the Internet.

A definition to broadband is a must as different service providers defines in their own terms & context. TRAI (Telecommunication Regulatory Authority of India) defines broadband as follows:-
                                   “An ‘always-on’ data connection that is able to support interactive services including Internet access and has the capability of the minimum download speed of 256 kilo bits per second (kbps) to an individual subscriber from the Point Of Presence (POP) of the service provider intending to provide Broadband service where multiple such individual Broadband connections are aggregated and the subscriber is able to access these interactive services including the Internet through this POP.”

Broadband Access Technologies:
    • Wire line (ADSL, VDSL, Cable Modem etc.)
    • Wireless (WiMAX, Wi-Fi, EVDO, 3G)
    Since this blog is written specially for BSNL broadband services, so I will consider the only technologies that BSNL Provides. Take a tour of each technology briefly for your understanding:

    1. DSL Technology:

    Variants of this technology are – ADSL, ADSL 2+, VDSL etc. Now a days BSNL mostly use the ADSL 2+ technology for his Landline Broadband services. By ADSL 2+ technology one can get a download speed of 12 Mbps also, but it depends on  some conditions like broadband plan, cable conditions, distance from POP (Exchange) etc.

                                 In ideal case ADSL 2+ can cater a download speed of >12 Mbps & upload Speed of >3 Mbps. I give you a simple Practical idea about the broadband download speed variation with distance from POP (Exchange):

    Upto 3 KM from POP: >5 Mbps

    Upto 4.5 KM from POP: >2 Mbps

    Above 5.5 KM: < 1 Mbps

    (Note: Obviously line condition matters.)                                                 

    1. Wi-Fi:

    It is a mechanism for wirelessly connecting electronic devices. A device enabled with Wi-Fi, such as a personal computer, video game console, smartphone, tablet, or digital audio player, can connect to the Internet via a wireless network access point. An access point (or hotspot) has a range of about 20 meters (65 ft) indoors and a greater range outdoors. Multiple overlapping access points can cover large areas.

                                                 BSNL Provides the Wi-Fi technology using same ADSL 2+ access network with Type-2/ 4 ADSL Routers (Modems). By using this you may access upto 4 PC through CAT cables and Wi-Fi for Your laptops or any wireless device. There is no extra charge for Wi-Fi use.

    1. WiMAX:

    WiMAX acronym meaning “Worldwide Interoperability for Microwave Access”.It is an IP       based Wireless Broadband Access Technology utilizing IEEE 802.16e-2005 standard as       the air interface. You can move around the CPE device and get the Internet access       everywhere in your home, and in the office. And you can subscribe only one connection       for both office and home use. No Wire, No Telephone connection required. User can       expect to have broadband access speeds ranging from 256 Kbps to 2 Mbps. There are       three types of WiMAX CPE -   Indoor-CPE, Outdoor-CPE, CPE-PCM-CIA/USB.

    4.    EVDO:

     Evolution-Data Optimized / Evolution-Data ( often abbreviated as EV-DO or EVDO and often EV) is a telecommunications standard for the wireless transmission of data through radio signals, typically for broadband Internet access. It provides fast wireless broadband internet service directly to your laptop/DEsktop. EVDO offers up to 2.4 Mbps. But it varies depending on where you are. This depends on how far you stay from CDMA BTS, either with EVDO network or CDMA 1x. You will get very good speeds if the tower is within 2 - 3 KMs radius. BSNL is providing PCMCIA as well as USB type EVDO data card.

    1. 3G:

     3G is the next generation of mobile communications systems. It enhances the services such as multimedia, high speed mobile broadband, internet access with the ability to view video footage on your mobile handset. With a 3G phone and access to the 3G network you can make video calls, watch live TV, access the high speed internet, receive emails and download music tracks, as well as the usual voice call and messaging services found on a mobile phone, like person to person video. In 3G broadband, the connectivity speed will be almost comparable to the wire line broadband. BSNL Provides 3G both in Postpaid as well as Prepaid.

    It’s all about the basic Broadband Access technology that BSNL provides. Thanks for your patience. Have you any query regarding these technologies?

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