E2-E3 E & WS VSAT. For Internal circulation of BSNL only

Transcription

1 E2-E3 E & WS VSAT

2 WELCOME This is a presentation for the E2-E3 E&WS Module for the Topic: VSAT Eligibility: Those who have got the Upgradation to from E2 to E3. This presentation is last updated on You can also visit the Digital library of BSNL to see this topic.

3 AGENDA VSAT Introduction Benefits/Advantages of VSAT Network Components of VSAT VSAT Network and Network Topology KU band Broadband V-SAT Network VSAT Services

4 VSAT INTRODUCTION VERY SMALL APERTURE TERMINAL: ANTENNA DIA - Typically about 2 to 5 feet ( meters) for KU Band VSAT s POPULARITY DUE TO: - SMALL ANTENNA - NO LAST MILE PROBLEM

5 VSAT INTRODUCTION 1. VSAT is a complete earth station that is installed at user premises and provides business communication services. 2. VSAT systems can be designed to serve both broadcast and interactive applications whether data, voice or video. 3. Can be operated in either single or multi user environment. 4. In single-user mode it interfaces directly to the customer s PC. 5. In multi-user mode, seamlessly integrates into a Local Area Network with its built in Ethernet Interface RJ-45

6 V-SAT technology is a secure and reliable medium to connect geographically dispersed locations and represents a cost effective solution for users seeking an independent communication network. Broadband V-SAT of BSNL, operating in Ku band of electromagnetic spectrum i.e. 11 to 18 GHz, offer value added satellite based services capable of supporting Broadband internet access,voip, video conferencing, IP multicast, Local Area Network, voice, Fax and can also provide powerful dependable private communication solutions.

7 VSAT INTRODUCTION V-SAT offers broadband services which provides high performance two-way connectivity for Broadband access. Offers value added satellite based services with the added advantage to serve remote and inaccessible areas. A cost-effective networking solution for Corporate bodies, Training Centers, Hospitals, Stock exchanges, Banks, Technical institutions, Government, military etc.

8 Advantages of VSAT Network Ease and rapidity of installation. Relative independence of VSAT earth station from terrestrial links. The reliability and the quality are generally superior to the terrestrial alternatives. The overall end to end availability to the users is in excess of 99 percent.

9 Advantages of VSAT Network V-SAT can be used to give immediate service to locations that cannot afford to wait for such long lead times. The V-SAT can be deployed for communication very quickly for emergencies such as natural calamities etc.

10 VSAT Components VSAT consist of a small dish antenna ( 0.75 to 1.8 m), antenna feed, RF outdoor unit ( ODU ) and an indoor unit (IDU). Antenna dia < 3 M in C-Band and < 1.6 M in Ku Band. Most antennas are symmetrical, front fed with paraboloidal reflector and offset feeds.

11 OUTDOOR UNIT (ODU) VSAT Components TRANSMIT/RECEIVE DISH ANTENNA & FEED BLOCK UP CONVERTER (BUC)(1W-2W):- It converts incoming I.F. (from IDU) to RF transmitting frequency, amplifies it and passes it to feed. LOW NOISE BLOCK DOWN CONVERTER (LNB):-It amplifies incoming R.F. (Radio Frequency) from feed using low noise amplifier, converts it to I.F. and passes it to IDU. -

12 INDOOR UNIT (IDU) The indoor unit may be a small desktop box, or it may be a network module integrated with a router providing V-SAT network connectivity Provide flexible Interfaces like Ethernet 10/100 Base T (RJ45), USB with maximum download speed of up to 4 Mbps and maximum upload speed of up to 2 Mbps.

13 INDOOR UNIT (IDU) On receiving side, IDU converts I.F. (Intermediate Frequency) from ODU to base band signals which may be data, video or voice. On transmitting side, IDU converts base band signals to I.F. and passes them to ODU. I.F. is generally in L band. R.F. can be in C, Ku or Ka bands.

14 VSAT IDU / ODU EQUIPMENT ODU IDU LNB BUC Feed horn Dish Power LAN Link Ethernet Sync IDU (IPX-5100) flexible, Low-cost, and high performance Two way satellite User Terminal 10/100 Fast Ethernet LAN port

15 Choice of Frequency Band The case for C- and X band is,when suitable Ku bandwidth is not available or rain environment is unsuitable in region of interest. For these reasons, C-band, while demanding dish sizes effectively twice that of Ku band, is practical solution for VSAT s in Pacific Islands, Equatorial South America, Southeast Asia, Central Africa and India.

16 FREQUENCY BANDS FOR VSAT C-BAND (6/4 GHz) - WORLDWIDE AVAILABILITY - CHEAPER TECHNOLOGY - ROBUSTNESS TO RAINFALL - REMOTE STATIONS LARGER; 1 TO 3 m. -INTERFERENCE TO ADJACENT SATELLITES & TERRESTRIAL MICROWAVE EXT.C-BAND ( 6.975/6.735 GHz) RELATIVELY LESS USAGE; USED IN INDIA

17 FREQUENCY BANDS FOR VSAT Ku-BAND (14/10-12 GHz) MAKES BETTER USE OF SATELLITE CAPACITY REMOTE STATIONS ARE SMALLER; 0.6 TO 1.8 m. - RAIN AFFECTS LINK PERFORMANCE

18 VSAT NETWORKS Support mainly digital networks Entire network can be controlled from a single hub through appropriate commands. The network can be defined operated from the hub. The hub also takes care of billing etc. BROADCAST CHARACTERISTICS :-The V- SAT application started with receive only terminals for receiving TV broadcast signals in C band. Small dishes measuring 1.5M to 3M are being widely used for receive only applications for TV broadcast for DTH services.

19 ELEMENTS OF VSAT NETWORKS - SATELLITE - GEOSTATIONARY, KM. ABOVE EARTH - REMOTE STATIONS CALLED VSATs - CENTRAL & LARGER STATION CALLED HUB - NETWORK ARCHITECTURE

20 ELEMENTS OF VSAT NETWORKS (CONTD.) - NETWORK PROTOCOLS -MULTIPLE ACCESS & CHANNEL ACCESS TECHNIQUE -- USER TERMINALS (DTEs), INTERFACES, & PROTOCOLS - BASEBAND PROCESSING

21 IDU IDU VSAT VSAT PHONE DTEs USER TERMINALS DTEs USER TERMINALS NMC HUB PHONE VSAT NETWORK SUBSYSTEMS

22 Network Topology V-SAT networks can be arranged in point to point, star, mesh, star/mesh and broadcast configurations. Point to Point Network:-two-way communications between two V-SAT sites Star Network :- any number of V-SAT sites to have two-way communication with a central hub. Mesh Network :-two-way communications between any V-SAT sites in a network. A central hub is not necessary.

23 Satellite repeater Uplink Downlink Outbound Broadcast Carrier Hub Station Inbound Multiple Access Carriers from VSAT s. Figure : A Typical arrangement of outbound and inbound transmissions in a Star VSAT network.

24 VSAT NETWORK ARCHITECTURE STAR NETWORK TYPES - ONE WAY FOR BROADCAST APPLICATIONS TWO WAY FOR INTERACTIVE APPLICATIONS COMMUNICATION VIA HUB MESH NETWORK COMMUNICATION WITHOUT GOING TO HUB

25 VSAT NETWORK ARCHITECTURE Star Configuration : It is a Point to Multipoint architecture and most widely used. Communication between two user terminals is in two hops, through a Hub. All information transfer is between remote node and hub; direct single hop remote to remote data transfer is not possible with this topology.

26 VSAT NETWORK ARCHITECTURE Star Configuration : OTBOUND Signal from hub to remote nodes. - Also known as forward or Downstream signal. - It is received by all remote nodes within satellite footprint. - It typically contains address information that allows desired remote to select the information destined for them.

27 VSAT NETWORK ARCHITECTURE Star Configuration INBOUND Signal from remote nodes to hub. - Also known as forward or Downstream signal. - Inbound transmissions from VSAT s employ one of number of multiple access techniques ALOHA,TDMA,FDMA or CDMA. VSAT networks with hub have the benefit of centralized management and control provided with the help of NOC (Network operation and control centre ) located at hub station.

28 VSAT NETWORK ARCHITECTURE Mesh Configuration : Mesh configuration is point to point architecture and allows any station to have a single hop connection with any other station; using TDMA access. There is no hub station with a large antenna to offset small dish size and low transmit power of VSAT. Each terminal has capability to reach any other at full data rate, which is in range of 256 kbps to 10 Mbps. This capability is sufficient to support full channel of commercial quality MPEG 2 video along with audio and other data.

29 KU band Broadband V-SAT Network V-SAT Broadband (Ku band V-SAT) networks of BSNL designed in a hub and spoke fashion customer locations directly connected over the air to a central hub facility. The equipment at a customer site V-SAT receiver/router Small dish mounted on top of or outside the building

30 KU band Broadband V-SAT Network Equipment at the central hub facility a large Satellite antenna of 8.1m Cassegrain feed type. Sophisticated hub RF components receive and transmit to the remote sites, and route information to and from the internet or private networks. GATEWAY Networking Equipment with interfaces to Terrestrial Networks

31 KU band Broadband V-SAT Network Internet router is connected to BSNL National Internet Backbone using multiple 2 Mbps leased line All Remote V-SAT locations are having private IP so that remote V-SAT users can connect to Internet. BSNL s Ku Band HUB (Earth Station) at BANGALORE

32 IP BASED VSAT BROADBAND SERVICE Broadband Services on a single platform Excellent networking solution for Corporate bodies, Banks, Hospitals, Stock exchanges, Educational institutions, Government, military etc. Quick network deployment including inaccessible/remote areas

33 Quality Bandwidth Any Time Any Where INSAT INTERNET Ku Band BSNL Gateway Bangalore VSAT (Private IP) MPLS VSAT HUB EQUIPMENT IDU MLLN VoIP

34 Services Offered Leased Lines through VSAT on IP platform: Starting from 4Kbps and upto 2Mbps High speed Broadband Internet VoIP Telephony Facsimile Supports Telemedicine applications Supports E-learning applications IP multicasting, Video Conf., Video Streaming

35 V-SAT Market The Indian V-SAT market was valued at Rs 650crore in Around 25,000 V-SATs are sold every year, with the installed base growing at a CAGR of 25 percent.

36 The key driver of V-SAT market s growth in India need to spread connectivity to remote areas the demand coming from the BFSI verticals Telemedicine, interactive distance education, digital signage/cinema, stock-brokering SWAN projects, growth in the retail industry etc. will drive the growth in the market for the next 2-3 years. Telecom/cellular networks are another major growth area, since the only way operators can affordably provide connectivity in some parts of India is through V-SAT.

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