1 / 27

Broadband Access Techniques

Broadband Access Techniques. Broadband Policy-2004.

robertethomas
Download Presentation

Broadband Access Techniques

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript

  1. Broadband Access Techniques

  2. Broadband Policy-2004 • Broadband is defined as an “always on” data connection that is able to support interactive services including Internet access and has the capability of minimum download speed of 256 kbps to an individual subscriber from the POP of the service provider

  3. Broadband Policy-2004 • Salient Features: • De-licensing of 2.40-2.48 Ghz band for outdoor low output • Enabling VSAT operators to transmit data up to 2 Mbps (At present 512 Kbps in CUG domestic network) • Allowing DTH operators to give one way Internet facility. For bi-directional VSAT license will be required. • BSNL & MTNL to utilise copper and allowing them to enter into arrangement with private players to utilise copper and content creation

  4. Broadband Services • High speed Internet Access • Video-on-Demand • Interactive Games • Share market dealing & personal banking • News, travel & leisure information • Music/Movie Download • Chatrooms & newsgroups

  5. Broadband Services • E-mail & instant messaging • Personal websites and online magazines • Educational materials & research resources • Tele-medicine • Work at home • Internet radio & webcast concerts

  6. Broadband Users • There are about 100 million Broadband subscriber worldwide and are increasing by about 2,00,000 every month • Asia Pacific – 45% • USA – 30% • Europe, Middle East & Africa – 25%

  7. Broadband Technologies Wireless Wireline 3G Mobile DSL (Digital Sub’s Line) Wi-Fi (Wireless Fidelity) Cable Modem WiMAX Optical Fibre Technologies LMDS & MMDS PLC (Power Line Communication) FSO (Free Space Optics) Satellite Broadband Technologies

  8. Wireless Access Technologies - Wireless personal Area Network (WPAN/Bluetooth) - Wireless Local Area Network (WLAN/ WiFi) - Wireless Metropolitan Area N/w (WMAN/ WiMax) - Cellular Mobile Telephony. ( GSM-GPRS, EDGE/ CDMA 2000) (3G-UMTS)

  9. BLUETOOTH • Is IEEE 802.15 Wireless PAN standard. • It works upto 10 mts. • Operates in 2.4 GHz band with 20+ Mbps speed . • Used for short range wireless application. i.e. interconnectivity between PC and peripherals( laptops , desktops, printers) between various hand helds. • No license is required

  10. Wireless LAN Standards

  11. WiFi • Is is based on IEEE 802.11 specification • IEEE – is a standard. • 802.15 – is technical specification. • Bluetooth, Wifi are all commercial names. • Operated upto 100 mts. • Used for wireless LAN application. • In this there are three standards.

  12. Broadband Wireless Technologies • Cellular Telephony • 2G – GSM, CDMA - 9-14 Kbps • 2.5G – GSM(GPRS/EDGE), CDMA 2000 1x GPRS - 115 Kbps EDGE - 384 Kbps CDMA 2000 1x - 170 Kbps • 3G – UMTS/WCDMA, CDMA 2000 1xEVDO/EVDV - 384K (M), 2048K(S)

  13. WiMAX • WiMAX-Worldwide interoperability for Microwave Access • IEEE 802.16 standard defines the Wireless MAN air interface specification • Complements Wi-Fi by providing wireless broadband backhaul to 802.11 hotspots and last mile • Service area range of 50 kms • IEEE 802.16 d - Provides shared data rates up to 70 Mbps in 2-11 Ghz band • IEEE 802.16 e – Used for mobile WMAN upto 30 Mbps in 2-6 GHz range. • WiBro – provides 1Mbps to people moving at 70km/hr.

  14. Broadband Wireless Technologies • LMDS & MMDS • Provides point-to-multipoint two way broadband service • LMDS-Local Multipoint Distribution System • Operates in various bands such as 10.5 Ghz (8 kms) and 26 & 29 Ghz (3 kms) • MMDS-Multichannel Multipoint Distribution System • Operates in 2-3 Ghz (20-40 kms radius) • Provides high speed data rates upto 10 Mbps

  15. Broadband Wireless Technologies • FSO (Free Space Optics) • Also known as FSP (Free Space Photonics) or Optical wireless • Enables optical transmission of data through open space at near infrared wavelengths (Tera Hz) • Offers 10 Mbps-2 Gbps over few kilometers

  16. Broadband Wireless Technologies • Satellite • Uses VSAT (very Small Aperture Terminals) & DTH (Direct To Home) terminals • C, Ku & Ka bands are used for services involving fixed terminals • L band is used for mobile services • Offers data rates 9.6 Kbps for a handheld terminal and 60 Mbps for a fixed VSAT terminal • Future will support up to 155 Mbps

  17. Broadband Wireline Technologies • DSL-Digital Subscriber line • Technology for high bandwidth to home and small businesses over ordinary copper telephone lines • Achievable data rate depends on the distance and cable impairments

  18. DSL Technologies

  19. Broadband Wireline Technologies • Cable Modem • Allows high speed access to the Internet via a cable television network • Uses cable modem technology through the use of Set-Top-Box at the customer premises

  20. Broadband Wireline Technologies • Optical Fibre Technologies • Optical fibre with its unmatched capacity to carry enormous amount of information over unlimited distances can be deployed for broadband access in: • PON (Passive Optical Network) • FTTH (Fibre-To-The-Home) • FTTC (Fibre-To-The-Curb) • HFC (Hybrid Fibre Co-axial)

  21. FTTC • Here the terminal equipment is located on the curb from where it would be convenient to serve a suitable service area. The distribution would be still copper.

  22. FTTB • Here the terminal eqpt. Is located inside a multistoried building. • The distribution part is still copper.

  23. FTTH • Here the fibre goes upto the subscriber premises.

  24. Passive optical netwroks • Most networks in the telecom. N/ws are based on active components at the serving office exchange and termination points at the customer premises as well as in the repeaters, relays and other devices in the transmission path between the exchange and the customer. • These active components require power. • With passive optical n/ws , all active components between the central office exchange and the customer premises are eliminated and passive optical components are put into the n/w to guide traffic based on splitting the power of optical wavlengths to endpoints along the way. ALTTC/DX/IBB_OV/AKN

  25. This replacement provides a cost saving to the service provider by eliminating the need to power and service active components in the transmission loop. • The passive splitters or couplers are merely devices working to pass or restrict light and as such have no power.

  26. Broadband Wireline Technologies • PLC-Power Line Communication • Also referred as BPL (Broadband over Power Lines) • Can provide broadband Internet access through ordinary power lines • Most extensive networks in the world, surpassing the phone network as well as the cable network in size and coverage • Suffers from technological challenges due to interference with noise, radio and television etc.

  27. Thanks

More Related