Communication System in ONGC

1

Communication

Communication

Networks

Networks

in

in

ONGC

ONGC

2

Types of Transmission Media

 Guided Media:

 _{Copper Wire}

• Twisted Pair

• Coaxial Cable

• Optical Fiber

 Un-Guided (Wireless) Media:

 _{Radio Waves}

 _Microwave

 _Satellites

Generations of Cellular Mobile Radiophones

1G

 _{Advanced Mobile Phone System (AMPS): 1980s, Frequency Modulation} (FM), Frequency Division Multiple Access (FDMA), handover between cells, limited roaming between networks

2G

 _{Global System for Mobile communications (GSM): 1990s, digital-coding} of voice, Time Division Multiple Access (TDMA), Subscriber Identity Module (SIM), data communications

3G

 _{3G Partnership Project (3GPP), Universal Mobile Telecommunications} System (UMTS): 1998-, Wideband Code Division Multiple Access

(WCDMA), use of GSM network model, global roaming; 2 Mbps data

4G

4 _{Telecommunication Systems} Data Voice Video _{SCADA Systems}

Telemetry & Tele-control Instrumentation

_{Information Systems}

Data Bases Applications

Networking Systems

5

 Telecom systems

 ICNET-Satellite based backbone  MF-TDMA (Satellite based)

 Leased Lines

 Microwave Links  Regional Networks

 SCADA Systems

Telemetry and Tele-control Instrumentation system

6 Information Technology systems

 _{WAN – Wide Area Network}

 _{LAN -Integrated local area networks} _{Enterprise-wide applications}

 _ICE

 _WEBICE

 _{Internet/ Intranet}

 _{EPINET for Producing Assets and}

Reservoir Management

7

What is Microwave

8  Microwave

 _{This is a radio beam that uses very high frequencies}

to send and receive data.

 _{Transmission is aimed in a single direction to prevent}

others from intercepting the signal. Stations are placed ~30 - 50 km apart.

 _{Carries more information than low-frequency RF}

transmissions.

 _{Microwaves cannot penetrate metal structures.}

Stations must be visible to each other.

9

WHY MICROWAVE COMMUNICATION ?

_{Freedom from land}

acquisition rights

_{Ease of communication over}

difficult terrain

_{Directional or omni}

directional type

Communication possible if clear line of sight

_{Microwave communication}

requires

10 Mode Max Aggregate User Throughput (Mbps) Max User Throughput in Either Direction (Mbps) NZR Base JRT Base Fade Margin (dB) Throughput Availability (%) Receive time in Mode (%) Fade Margin (dB) Throughput Availability (%) Receive time in Mode (%) 64QAM 0.92 Dual 117.71 58.86 -8.25 0.0469 0.0469 -8.25 0.0469 0.0469 64QAM 0.75 Dual 96.19 48.10 -2.40 2.3527 2.3058 -2.40 2.3527 2.3058 16QAM 0.87 Sngl 37.42 18.71 2.16 0.0004 0.0004 2.16 0.0004 0.0004 16QAM 0.63 Sngl 26.90 13.45 7.14 99.0342 1.2683 7.14 99.0342 1.2683 QPSK 0.87 Sngl 18.70 9.35 9.91 99.5816 0.5475 9.91 99.5816 0.5475 QPSK 0.63 Sngl 13.45 6.72 12.34 99.7732 0.1916 12.34 99.7732 0.1916 BPSK 0.63 Sngl 6.72 3.36 16.27 99.9064 0.1332 16.27 99.9064 0.1332

11 Mode Max Aggregate User Throughput (Mbps) Max User Throughput in Either Direction (Mbps) MT Neelam Fade Margin (dB) Throughput Availability (%) Receive time in Mode (%) Fade Margin (dB) Throughput Availability (%) Receive time in Mode (%) 64QAM 0.92 Dual 117.30 58.65 -0.93 25.9081 25.9081 -0.93 25.9081 25.9081 64QAM 0.75 Dual 95.86 47.93 4.92 66.3627 40.4546 4.92 66.3627 40.4546 16QAM 0.87 Dual 74.57 37.29 8.54 68.4337 2.0710 8.54 68.4337 2.0710 QPSK 0.87 Sngl 18.64 9.32 17.23 80.6905 5.5406 17.23 80.6905 5.5406 QPSK 0.63 Sngl 13.40 6.70 19.66 85.7335 5.0430 19.66 85.7335 5.0430 BPSK 0.63 Sngl 6.70 3.35 23.58 92.4537 6.7201 23.58 92.4537 6.7201

12

_{Microwave Communications in ONGC}

 Point-to-point Microwave Radio Links

 _{Process Platform to Process Platform in western}

Off-shore & Uran to Vasudhara Bhawan, MR, Mumbai  _{Mehsana – Ahmedabad – Ankleswar – Baroda –}

Cambay – Hazira in western on-shore (Gujarat).  _{Nazira - To- GLK,SBS,LKW, Assam}

 _{Karikal (Nearvy) to Adiyakmangalam}

 _{Tel Bhawan to KDMIPE, Dehradun}

 Point-to-multipoint links

TDMA Radio Link-

 _{Process Platform-to-well platform in offshore}

 _{Vasudhara Bhawan to different offices in Mumbai}  _{Eastern Regions Field Installations –GLK, Lakwa,} RDS, JRT Fields GGS, CTF to Assets /Field Offices

13 55.75KM 64KM 25KM 31KM 25KM 37.41KM 43KM 12.5KM 18KM

14

TDMA RADIO NETWORK- MUMBAI HIGH

NQO N4 ND N6 NO NH NE NS LB LD NX N7 NW NT N3 LC LA LE NQO FIELD NR N8 NP SHP IT II IJ IH SS IL SY IW IM IN EC ED SW SV SU IE EE B121 S1-6 S1-5 S1-4 SHP FIELD IK BHN FIELD BHN N1 NB NV NJ N5 NM N2 NU NK WA NI ICP/ICW IB ID IA SM SR SD IQ IS IU WB ICP FIELD SG BHS FIELD BHS IF SN IG NL SQ EB SB SE SF SI SJ SK SP ST WI-6 IP SCA 2.8 22_.9 29_.2 2.2 11 11.8 11.8 1.4 2 .0 19.4 2.1 14.3 (8 Km.) (1 2 .7 K m .) (1 8.1 Km .) (19 .8 K m.) (6.5 Km.) (15.2 K_m.) (2 2 .1 K m .) Existing: JRC-1.5 MHz Existing: SRT-1.5 MHz Existing: JRC-1.5 MHz Existing: JRC-1.5 MHz Existing: SRT-1.5 MHz

15

ON-SHORE POINT-TO-MULTIPOINT NETWORK in MR, Mumbai

ON-SHORE POINT-TO-MULTIPOINT NETWORK in MR, Mumbai

TDMA TDMA RADIO RADIO ARCADIA ARCADIA T&S T&S NHAVA STORES NHAVA STORES DARULKHANA STORES DARULKHANA STORES BASE STATION BASE STATION VASUDHARA BHAVAN VASUDHARA BHAVAN TEC TEC PRIYADARSHINI PRIYADARSHINI BUTCHER ISLAND BUTCHER ISLAND ANDHERI ANDHERI HELIBASE HELIBASE BPCL BPCL MORMOR URAN URAN 2 GHz RA DIO LINK 2 GHz RA DIO LINK 2 G Hz _R AD IO LIN_K 2 G Hz _R AD IO LIN_K KARANJIA KARANJIA UHF LINK UHF LINK RCF TROMBAY RCF TROMBAY REPEATER-0 REPEATER-0 TROMBAYTROMBAY REPEATER-1REPEATER-1 MAKER TOWER MAKER TOWER BENGAL CHEMICALS BENGAL CHEMICALS M. DOCK M. DOCK M. T. 1 M. T. 1

2 GHz Digital Point tp Point Radio TDMA Radio

16

ASSAM ASSET FIELD COVERAGE

ASSAM ASSET

17

JORHAT BASIN

JORHAT BASIN

18 Nazira Nazira Geleki Geleki Lakwa Lakwa Sibsagar Sibsagar Rudrasagar Rudrasagar Cinnamara Cinnamara Jorhat Jorhat Koraghat/Nambar Koraghat/Nambar Communication Coverage in ER Communication Coverage in ER ( NOT TO SCALE ( NOT TO SCALE ) ) 20KM 20 KM 15KM 200KM 58 KM 30 KM 40 KM GGS GGS JORHAT CTF Silchar Silchar Borholla Borholla 12 KM GGS Satcom Link TDMA Link Radio Trunking

Point to Point Dig. Radios

19

WOBU 13 HOP LINK (OLD)

20

21 KLL NGM AKH KT/KNK 7 DBK Gandhar PLJ KOS Mehsana Ahmedabad AKH Cambay KT/KNK 7 Vadodara DBK Ankleshwar KOS Hazira Existing Commn. Network in WR

22

INTEGRATED RADIO TRUNKING NETWORK

INTEGRATED RADIO TRUNKING NETWORK

CAUVERY PROJECT CAUVERY PROJECT ... ... ... PRODUCTION INSTALLATION DRILLING RIG DSA RADIO BASE STATION ( 4+1 CHNLS) MOBILE EXCHANGE EPABX D_M R ... ... ADIYAKAMANGALAM INFFRASTRUCTURE ... ... EPABX D M R PSTN LINES ( DOT ) NERAVY INFRASTRUCTURE MOBILE

23

What is Satellite

Communication?

24

Satellite Communications

Based on radio frequency (RF) transmissions. Satellite communication systems consist of

ground-based or Earth stations (i.e. parabolic antennas) and orbiting transponders.

The transponder receives a microwave signal

from the ground unit (uplink) amplifies it and then transmits it back to earth (downlink).

Overview

Basics of Satellites Types of Satellites Satcom Technology

Basics: How do Satellites Work

Two Stations on Earth want to communicate

through radio broadcast but are too far away to use conventional means.

The two stations can use a satellite as a

relay station for their communication

One Earth Station sends a transmission to

the satellite. This is called a Uplink.

The satellite Transponder converts the

signal and sends it down to the second earth station. This is called a Downlink.

27

Basics: Advantages of Satellites

 _{The coverage area of a satellite greatly} exceeds that of a terrestrial system.

 _{Transmission cost of a satellite is}

independent of the distance from the center of the coverage area.

 _{Satellite to Satellite communication is} very precise.

Basics: Disadvantages of

Satellites

 _{Launching satellites into orbit is costly.}

 _{Satellite bandwidth is gradually becoming} used up.

 _{There is a larger propagation delay in}

satellite communication than in terrestrial Communication.

Basics: Factors in satellite communication

 _{The distance between an earth station and a satellite}

(free space loss).

 _{Elevation Angle: The angle of the horizontal of the earth}

surface to the center line of the satellite transmission beam.

 _{Satellite Footprint: The satellite transmission’s strength}

is strongest in the center of the transmission, and decreases farther from the center as free space loss increases.

 _{Atmospheric Attenuation caused by air and water can}

impair the transmission. It is particularly bad during rain and fog.

Basics: How Satellites are used

Service Types

 _{Fixed Satellites Service (FSS)}

• Example: Point to Point Communication

 _{Broadcast Satellites Service (BSS)}

• Example: Satellite Television/Radio

• Also called Direct Broadcast Service (DBS).

 _{Mobile Service Satellites (MSS)}

Types of Satellites

Geostationary Earth Orbit (GEO)

These satellites are in orbit 35,863 km above

the earth’s surface along the equator.

Objects in Geostationary orbit revolve

around the earth at the same speed as the earth rotates. This means GEO satellites remain in the same position relative to the surface of earth.

34

GEO (cont.)

Advantages

 _{A GEO satellite’s distance from earth}

gives it a large coverage area, almost a fourth of the earth’s surface.

 _{GEO satellites have a 24 hour view of a} particular area.

 _{These factors make it ideal for satellite} broadcast and other multipoint

GEO (cont.)

Disadvantages

 _{A GEO satellite’s distance also cause it to} have both a comparatively weak signal and a time delay in the signal, which is bad for point to point communication.

 _{GEO satellites, centered above the} equator, have difficulty broadcasting signals to near polar regions

Low Earth Orbit (LEO)

LEO satellites are much closer to the earth than GEO satellites, ranging from 500 to

1,500 km above the surface.

LEO satellites don’t stay in fixed position relative to the surface, and are only visible for 15 to 20 minutes each pass.

A network of LEO satellites is necessary for LEO satellites to be useful

LEO (cont.)

Advantages

 _{A LEO satellite’s proximity to earth}

compared to a GEO satellite gives it a better signal strength and less of a time delay, which makes it better for point to point communication.

 _{A LEO satellite’s smaller area of coverage} is less of a waste of bandwidth.

LEO (cont.)

Disadvantages

 _{A network of LEO satellites is needed,} which can be costly

 _{LEO satellites have to compensate for} Doppler shifts cause by their relative movement.

 _{Atmospheric drag effects LEO satellites,} causing gradual orbital deterioration.

Medium Earth Orbit (MEO)

A MEO satellite is in orbit somewhere

between 8,000 km and 18,000 km above the earth’s surface.

MEO satellites are similar to LEO satellites in

functionality.

MEO satellites are visible for much longer

periods of time than LEO satellites, usually between 2 to 8 hours.

MEO satellites have a larger coverage area

MEO (cont.)

Advantage

 _{A MEO satellite’s longer duration of visibility} and wider footprint means fewer satellites are needed in a MEO network than a LEO network.



Disadvantage

 _{A MEO satellite’s distance gives it a longer} time delay and weaker signal than a LEO satellite, though not as bad as a GEO satellite.

Other Orbits

Molniya Orbit Satellites

 _{Used by Russia for decades.}

 _{Molniya Orbit is an elliptical orbit. The} satellite remains in a nearly fixed position relative to earth for eight hours.

 _{A series of three Molniya satellites can act} like a GEO satellite.

Other Orbits (cont.)



High Altitude Platform (HAP)

 _{One of the newest ideas in satellite} communication.

 _{A blimp or plane around 20 km above the} earth’s surface is used as a satellite.

 _{HAPs would have very small coverage} area, but would have a comparatively strong signal.

 _{Cheaper to put in position, but would} require a lot of them in a network.

Frequency Bands

 Different kinds of satellites use different

frequency bands.

 _{L–Band: 1 to 2 GHz, used by MSS}

 _{S-Band: 2 to 4 GHz, used by MSS, NASA, deep space}

research

 _{C-Band: 4 to 8 GHz, used by FSS}

 _{X-Band: 8 to 12.5 GHz, used by FSS and in terrestrial}

imaging, ex: military and meteorological satellites

 _{Ku-Band: 12.5 to 18 GHz: used by FSS and BSS}

(DBS)

 _{K-Band: 18 to 26.5 GHz: used by FSS and BSS}

45

Broadcast Link

Multiple receivers

Commercial Mobile Broadband Ku-Band SATCOM

 BizJets: 100+ in Service

 _{Gulfstream V, IV, 450, 550}

 _{Bombardier Global Express}

 _{Bombardier Challenger 600}

 _{Cessna Citation X}

 _{Boeing Business Jet}

 Maritime: 500+ vessels

 _{Leisure yachts}

 _{Fishing vessels}

 _{Coast Guard}

 _{Merchant ships}

 High Speed Rail: 55+

 _{France SNCF TGV}

Current Coverage

2010 Coverage Broadband Performance: 10 Mbps

forward link, 512 Kbps return link, thousands of subscribers

Military Mobile Broadband Ku-Band SATCOM

• _{80+ AISR & C2 Aircraft Systems}

• SpOps, JCSE, Commando Solo, &

Compass Call C-130’s

• US Army TF-ODIN King Air 300’s

• USAF Liberty King Air 350ER’s

• Gov’t customer Pilatus PC-12’s

• Army Aviation Blackhawk helicopters trial

• _{Private Mobile Networks}

• 3, Regional In-Theater networks

• _{Boeing Broadband Satcom Network}

• 23 Senior Leadership (VIPSAM)

Aircraft

• 10 Stryker vehicles

• Multi-regional coverage

Private Networks Broadband Performance: Moving

toward 20 Mbps forward link, 1 Mbps return link, hundreds of subscribers

Satcom Technology



FDMA

 _FAMA-FDMA  _DAMA-FDMA



TDMA

FDMA

Satellite frequency is already broken

into bands, and is broken in to smaller

channels in Frequency Division

Multiple Access (FDMA).

Overall bandwidth within a frequency

band is increased due to frequency reuse (a frequency is used by two carriers with orthogonal polarization).

FDMA (cont.)



The number of sub-channels is

limited by three factors:

 _{Thermal noise (too weak a signal will be} effected by background noise).

 _{Intermodulation noise (too strong a signal} will cause noise).

 _{Crosstalk (cause by excessive frequency} reusing).

FDMA (cont.)

FDMA can be performed in two ways:

 _{Fixed-assignment multiple access (FAMA):} The sub-channel assignments are of a fixed allotment. Ideal for broadcast

satellite communication.

 _{Demand-assignment multiple access} (DAMA): The sub-channel allotment

changes based on demand. Ideal for point to point communication.

TDMA

TDMA (Time Division Multiple Access)

breaks a transmission into multiple time slots, each one dedicated to a different transmitter.

TDMA is increasingly becoming more

widespread in satellite communication.

TDMA uses the same techniques (FAMA

TDMA (cont.)



Advantages of TDMA over FDMA.

 _{Digital equipment used in time division} multiplexing is increasingly becoming cheaper.

 _{There are advantages in digital}

transmission techniques. Ex: error correction.

 _{Lack of Intermodulation noise means} increased efficiency.

Selected for Best in Capacity!

The Newest Standards in Satcom Networking

The Newest Standards in Satcom Networking

Point-to-Point Mesh – Any-to-Any Hub & Spoke (Client Server)

MIL-STD-188-165B Modem

MD-1366 EBEM

WIN-T & USMC SWAN LINKWAY S2 DoD Standard for IP Networks MD-1377 JOINT IP MODEM

3000 Fielded 5000 Fielded Shipping Spring ₂₀₁₀

Modem Includes NSA Evaluated FIPS 140-2 TRANSEC

Type 1 HAIPE Network Encryptor

for COMSEC

Terminal Proposition

Faster, Smaller, Cheaper!

Existing… ….. Feature  2.4m Trailer plus baseband vehicle  3Mbps Mesh  2-8Mbps Point-to-Point  $500K/Terminal  $8.5-31.6K/Month airtime  .7m Portable  5 Mbps Transmit  30 Mbps Receive  $50K/Terminal  $100-$1000/Month airtime Battalion Command Post Node 2.4m Ku LAN MGT SIPR NIPR Battalion Command Post Node 2.4m Ku LAN MGT SIPR NIPR

56

Major problems for satellites

Positioning in orbit

Stability

Power

Communications

57 

Advantages of Satellites:

 Covers very large areas

 Reaches geographical isolated areas

 Disadvantages:

 Expensive

 Large propagation delay (high latency)

 Not very secure; signals can be easily intercepted

 Affected by atmospheric conditions

 Sun transient

 Solar eclipses

58

ONGC’s SATCOM Networks

 C-BAND SATCOM NETWORKS

 _OPSNET  _TELNET

 _{DRILLNET ( MCPC )}

 _{ICNET ( DAMA & PAMA)}  _INMARSAT

 _MF-TDMA

59

Technical Parameter of C-Band

Location : 55Deg East Txp No. : 15

Bandwidth : 36Mhz Polarization : Linear EIRP of Txp : 38 dbw

Center Frequency of Transponder :

Tx Frequency - 6050 Mhz. Rx Frequency - 3825 Mhz. Beacon Frequency :

Beacon Frequency # 1 - 4197.504 Mhz. Beacon Frequency # 2 - 4191.00 Mhz.

60

(3 82 5 M H z) C G 0 V A T M S ICENET 3 83 0. 0 M H z 3 83 7. 4 M H z 3 83 8 .2 M H z 3 83 9 .0 M H z 3 83 9. 8 M H z 3 84 0 .6 M H z 3 84 1. 4 M H z 3 84 2 .2 M H z 3 84 3 .0 M H z 0 .6 25 M S P S 38 28 .0 M H z 3 82 6. 7 M H z 3 83 8. 6 M H z 3 83 9. 4 M H z 38 4 0. 2 M H z 38 4 1. 0 M H z 3 82 6. 7 M H z 38 42 .6 M H z 0 .6 25 M S P S 0 .6 25 M S P S 0. 6 25 M S P S 0. 6 25 M S P S 0. 6 25 M S P S 0 .6 25 M S P S 5. 0 M S P S 3 83 7. 0 M H z 38 3 7. 8 M H z 38 29 .5 M H z 38 2 8. 4 M H z 0 .6 25 M S P S 0 .6 2 5 M S P S 3 82 9. 1 M H z 38 28 .3 4 M H z 3 82 7. 6 M H z 1 .2 5 M S P S 38 27 .5 M H z 38 25 .9 M H z IC E N E T B A C K H A U L 38 24 .7 4 M H z 38 23 .9 4 M H z (3 84 3 M H z) (3 80 7 M H z)

Bandwidth Distribution

Satellite/ Transponder : INSAT – 3E # 15

Bandwidth : 36 MHz

Power : 38 dBW ( 6 dB BO)

NETWORK ACCESS

TECHNOLOGY No.of Channels using the facilityNo.of Stations BW (MHz)

OFFSHORE

STATIONS SCPC 40 13 offshore plts 8.82

VATMS DAMA/SCPC. 20 1.75

Rig.VSAT MCPC ( Incl Vijay&

Bhushan,Sandhani) 11 11 2.82 ICNET-D SCPC 1 On requirement 0.54 ICNET-Voice DAMA 45 34 1.60 Field Installations MFTDMA 11 183 18.40 OCC &

C-Series TDM/TDMA 1+2(TDM/TDMA_4-C-serie 147 1.72

Interfernc etc. 0.35

…ONGC’sONGC’s Networks Networks OPSNET:

• In year 1983, Two earth stations were setup at

Uran & Offshore platform –BHN based on Dig. SCPC technology.

• By 1990, the network was expanded to cover

Hazira Complex and two more offshore complexes.

TELNET:

• During 1991-93, 9 Earth stations were

established at important work centers under Telnet Project. This was an hybrid network based on CFM/Dig SCPC.

64

TELNET SATELLITE CHANNELS

TELNET SATELLITE CHANNELS

51XXX 51XXX DEHRADUN DEHRADUN 56XXX 56XXX CHENNAI CHENNAI 58XXX 58XXX NAZIRA NAZIRA 57XXX 57XXX CALCUTTA CALCUTTA 54XXX 54XXX BARODA BARODA 53XXX 53XXX DELHI DELHI

TELNET/HOT-LINE EPAX NETWORK TELNET/HOT-LINE EPAX NETWORK

INSAT-3E

DOT HOTLINE LEASED CIRCUITS

DOT HOTLINE LEASED CIRCUITS

55XXX

55XXX

MUMBAI

DRILLNET:

 _{11 VSATs were installed on offshore Drilling rigs during 1998,for}

providing Voice & Data communication based on MCPC Technology.

ICNET:

 In 200 DAMA based Voice & Data network was implemented by augmenting 8 stations and setting up 13 new stations/VSATs.

 DAMA SkyLinx of M/s ViaSat( SA) for Voice & Data- Radyne._{DAMA SkyLinx of M/s ViaSat( SA) for Voice & Data- Radyne.}  8 Existing ( 11M-3, 7.5M-2, 4.5M-3) Earth stations augmented_{8 Existing ( 11M-3, 7.5M-2, 4.5M-3) Earth stations augmented}  _{One 6.1 m Earth station & 5 nos. 4.5M Earth stations set up .One 6.1 m Earth station & 5 nos. 4.5M Earth stations set up .}  _{7 nos. 3.8M VSATs were set up at new work centers. 7 nos. 3.8M VSATs were set up at new work centers.}

66 Satellite Remote1 NMS _Remote2 Aloha freq. Out link freq. phone phone Tx Rx channel

Remote site send the request on aloha channel to NMS then NMS check the no. asked by

remote and NMS asign the channel to the sites by handshaking between them on outlink.

67

6.1M 11M

11M

DEHRADUN

DEHRADUN URAN URAN --NMSNMS

NAZIRA NAZIRA 7.5M 3.8M HAZIRA HAZIRA 4.5M ANKLESHWAR ANKLESHWAR AHMEDABAD AHMEDABAD 4.5M JODHPUR JODHPUR 4.5M RAJAMUNDRY RAJAMUNDRY 4.5M BARODA

BARODA MUMBAIMUMBAI DELHIDELHI

CHENNAI CHENNAI KOLKATA KOLKATA AGARTALLA AGARTALLA 4.5M 4.5M 4.5M 4.5M MEHSANA MEHSANA 3.8M CAMBAY CAMBAY PANVEL PANVEL 3.8M 3.8M JORHAT JORHAT 3.8M SILCHAR SILCHAR 3.8M KARAIKAL KARAIKAL 3.8M NARSAPUR NARSAPUR -INSAT -3E 4 V & 2_D 4 V & 3 D 4 V & 3 D 4 V & 5 D 3 V & 2 D 3 V & 3 D 10 V & 1 0 D 24 V &38 D 3 V & 2 D 20 V & 1 0 D 24 V & 4 _D 10 _V & 7 D 8 V _& 6 D 3 V _& 2 D 3 V _& 2 D 3 V & 2 _D 6 V & 3 D 3 V & 2 D 3 V & 2 D 10 V & 7 D 3 V & 3 D OFFSHORE OFFSHORE 11M 7.5M Process Platform Process Platform : 09: 09 Drilling Rigs Drilling Rigs:10:10 BHS,BHN,ICP, NQO,SHP,BPA, BPB,HRA,NLM

VSAT Expansions at Offshore:

VSAT Expansions at Offshore:

 _{6 VSATs were installed at various process platforms for providing} Voice & Data communication based on MCPC Technology.

 _{VATMS project was implemented during 2006-07 by augmenting 5} existing stations and set up 3 VSATs at Tapti, Suvali & WIN for offshore security purpose.

 _{DAMA Sky Lin of NMS was upgraded.DAMA Sky Lin of NMS was upgraded.}

 _{Uran Earth station and 4 offshore station were augmented with Uran Earth station and 4 offshore station were augmented with}

HSDCU for providing Data connectivity.

HSDCU for providing Data connectivity.

 _{1 nos. 2.4M VSATs & 2 nos. 3.8M VSATs were set up. 1 nos. 2.4M VSATs & 2 nos. 3.8M VSATs were set up.}

69

MUMBAI OFF-SHORE COMMUNICATION NETWORK

MUMBAI OFF-SHORE COMMUNICATION NETWORK

2 Mb Lease Line

PRIYADARSHINI

RIG

 _{THE PROJECT WAS BASED 0N MF-TDMA}

TECHNOLOGY.

 COVERED 183 SATCOM LOCATIONS & 25 RADIO

LINKS SPREAD ACROSS THE COUNTRY.

PRODUCTION INSTALLATIONS AT VARIOUS ASSETS (3.8M/2.4M)

GEOPHYSICAL FIELD PARTIES (2.4M) ON-SHORE DRILLING RIGS (2.4M)

AUGMENTATION OF 8 OFF-SHORE DRILLING

72

MF- TDMA SATCOM SYSTEM

Field Installations Communication

Band width on Demand

Virtual Hub Concept

Mixed Topology (Star & Mesh)

Common Bandwidth for Voice & Data

TYPE OF

STN NTATIONAUGME- NEW TOTAL

11M 3 0 3 6.1M 2 0 2 4.5 8 3 11 3.8M 14 38 52 2.4M 0 115 115 TOTAL 27 156 183

74 Asset HQ 11Mtr BRD V-HUB 11Mtr URN V-HUB 6.3 mtr V-HUB JRT 3.8 mtr SIL 3.8mtr 2.4Mtr JRT=12, NZR=21 SIL=2 3.8Mtr SIL=3 KOL=4 AGT=4 Asset HQ KOL 4.5mtr KOL=5, AGT=4 2.4Mt r OFF/S DR=8 2.4Mtr JDH 4.5mtr ANK Asset HQ MHN 4.5mtr Asset HQ Asset HQ 4.5mtr Asset HQ CBY 3.8mtr Asset HQ DLI 4.5mtr DATA CNTR. 11Mtr DDN V-HUB JHD=1 W-ON/S=9 3.8M 2.4Mtr BRD=10, AMD=7 ANK=9, CBY=1 MHN=8 3.8M S/LAXMI=1 GOA=1 RJY 2.4Mtr RJY=8, KKL=6 CHN=6 3.8Mtr RJY=8, KKL=7 4.5mtr Asset HQ KKL 4.5mtr Asset HQ CHN 4.5mtr Basin HQ MBY V-HUB NZR 6.3 M AMD Asset HQ 4.5mtr Asset HQ AGT 4.5mtr 6.3 M

Network Diagram of MF-TDMA

Back-up links Primary links In Mesh Topology

75 NCCONGC1 MRT TT_3 L2 S W I T C H TT_2 TT_1 12:1 COMBINER 1:12Splitter IF to L-Band / L-Band to IF L3 S W I T C H SSPA 1:1 UP/DN 1:1 LNA 1:1

ONGC Deheradun MFTDMA HUB LEVEL DIAGRAM

TT_5 TT_6 TT_4 NMS PC (DDN) At SPLITTER: Freq. 1300 MHz Level: -35 dBm Noise: -74.75 dBm C/N: 39.66 dB At COMBINER: Carrier 0 Freq.: 1299.340 MHz Level: -87.29 dBm Noise:-102.1 dBm C/N : 14.83 dB -64dBm -61dBm -40 dBm -18dBm -16dBm -16dBm -16dBm -16dBm -16dBm -45dBm -60dBm -62dBm -58dBm -94dBm TT_7 TT_8 -16dBm -16dBm -15dBm

76 Mail, Intranet, Internet and SAP Servers 8 MB Leased Line 10.207.2.209 Accelnet Server TT1

ONGC PHYSICAL DIAGRAM

TT4 TT6 IP 10.207.2.185/29 Internet Proxy Server IP 10.205.46.22 Port 8080 Dehradun Router NMS PC Cisco L2 Switch MRT _NCC (IP 10.205.10.245) (IP 10.205.10.245) (IP 10.205.10.240) TT3 TT5 TT2 AVAYA Server 10.205.2.133-137/27 Catalyst 4506 L3 Switch 10.205.10.236 Delhi Router TT7 TT8 10.207.2.129 10.207.2.161 10.207.2.201 10.207.2.193 10.207.2.187 10.207.2.177 10.207.2.169

77 Client PC3 Client PC2 Client PC1 In sat 3E Mail, Intranet, Internet and SAP Servers 8 MBPS Leased Line Connected to Client PC1 Connected to Client PC2 Connected to Client PC3 VLAN 10 VLAN 19 VLAN 11 VLAN 4 Accelnet Server TT1

ONGC LOGICAL NETWORK DIAGRAM

TT2 TT8 Remote Linkway 1 Remote Linkway 2 Remote Linkway 3 Ethernet 1 IP 10.207.2.185/29 VLAN 21 (IP 10.207.2.188) Internet Proxy Server IP 10.205.46.22 Port 8080 (ddn-ses1) Cisco router

78 Client PC3 Client PC2 Client PC1 In sat 3E Mail, Intranet, Internet and SAP Servers 2 MB Leased Line VLAN 4 ONGC LOGICAL NETWORK DIAGRAM

Remote Linkway 1 Remote Linkway 2 Remote Linkway 3 VLAN 21 (IP 10.207.2.188) Internet Proxy Server IP 10.205.46.22 Port 8080 (Mumbai) Cisco router MUMBAI L2 SWITCH L3 SWITCH (Delhi) Cisco router

79 Layer-3 Switch 10.205.127.50/23 IP 10.205.127.248/23 Leased Line Leased Line

ONGC GEO-RED SETUP

IP 10.205.10.242/24 ANCC Server NCC Server MRT AMRT Layer-3 Switch 10.205.10.236/24 IP 10.205.10.242/24 IP 10.205.10.240/24 _{IP 10.205.127.247/23} Delhi Router Dehradun

Router _RouterURAN

Backup NCC Server Backup MRT IP 10.205.10.240/24 Layer-2 Switch 10.205.10.244 Layer-2 Switch IP 10.205.127.236

80

ERP, Intra

net & Inter net Pro dn . SC AD A Mai l 11Mtr DDN V-HUB 3.8Mtr KKL=7 KKL 4.5mtr Asset HQ CHN 4.5mtr Basin HQ 2.4Mtr KKL= 6 DLI 4.5mtr DATA CNTR.

Existing leased line Back-up Sat. links to leased line

Primary Sat. links Alt. Sat. links Karaikal Asset ERP, Intra net, Inte rnet & dr illing SCA DA

81

ERP, Intra

net & Inter net Pro dn . SC AD A Mai l 11Mtr DDN V-HUB 3.8Mtr RJY=8 RJY 4.5mtr Asset HQ CHN 4.5mtr Basin HQ 2.4Mtr RJY= 8, DLI 4.5mtr DATA CNTR.

Existing leased line Back-up Sat. links to leased line

Primary Sat. links Alt. Sat. links Rajamundary Asset ERP, Intra net, Inte rnet & dr illing SCA DA

82 MOD DEMOD MOD DEMOD MOD DEMOD COMBINER COMBINER SPLITTER N E T W O R K M A N A G E M E N T an d C O N T R O L DATA INTERFACE VOICE INTERFACE

LOW NOISE AMPLIFIER (LNA) LOW NOISE AMPLIFIER (LNA) HIGH POWER AMPLIFIER (HPA)

HIGH POWER AMPLIFIER (HPA)

SATELLITE EARTH STATION

(EQUIPMENT BLOCK DIAGRAM)

HPA-A HPA-A SWITCHING SWITCHING UNIT UNIT HPA-B HPA-B LNA-A LNA-A LNA-B LNA-B SWITCHING SWITCHING UNIT UNIT SWITCHING SWITCHING UNIT

UNIT SWITCHING SWITCHING UNITUNIT

UP CONV.-A

DN CONV.-B DN CONV.-A UP CONV.-B

ANTENNA

83

INSAT-3E

INSAT-3E

SATELLITE COMMN.

SATELLITE COMMN. SETUP SETUP AT DEHRADUNAT DEHRADUN

COMBINER UP CONVERTERS M O D D E M O D M O D D E M O D _MOD D E M O D SPLITTER NETWORK MANAGEMENT and CONTROL DN CONVERTERS LOW NOICE AMPLIFIERS HIGH POWER AMPLIFIERS MUX RADIO MUX RADIO 18GHz RADIO Link TELNET/HO TELNET/HO TLINE EPAX TLINE EPAX KDMIPE

KDMIPE _{TEL BHAVANTEL BHAVAN}

VOICE CH. VOICE CH. DATA CH. DATA CH. 24 38 ROUTER/SWITC ROUTER/SWITC H H

SATCOM NETWORK SPREAD

DEHRADUN

Rajamundry field Ahmedabad field

Ankleshwar and Gandhar field Rajasthan field Mehsana field Karaikal field INSAT 3E NCC Assam field Tripura field Coal base methane field Northern field

2.4M VSATs for Drilling rigs and Expl. Field parties (Total No. 115)

Network Network 11M/11M/ 9.0M 9.0M 7.5 7.5 6.1M6.1M 4.5M4.5M 3.8M3.8M 2.4M2.4M 1.8 M1.8 M TotalTotal MFTDMA MFTDMA 33 00 22 1111 4444 123123 183183 Onshore-(Not in Onshore-(Not in TDMA) TDMA) 11 22 33 66 Platforms & Platforms & (OCC (OCC Augment) Augment) 1 1 11 -- 1010 00 12 12 OCC (New) OCC (New) 1(9M)1(9M) 133(5133(5 0) 0) 134134 C-Series C-Series -- -- -- -- -- -- 44 44 TOTAL TOTAL 44 22 33 1111 5656 126126 137137 339339

86 INTRGATED COMMUNICATION NETWORK KOL NZR BRD HZR MBY CHN DLH DDN RJY NSR CBY AMD ANK JDH MHN PNL URN KKL AGT JRT SLC HRA BPA BHN SHP NQO BHS GNDR BPB NLM ICP 1 2 3 15 RCF 4 BRHL SRP TDMA SYSTEM C-BAND SATCOM E/S OFC LINK (Leased Ckt )

TRUNKING SYSTEM KU-BAND SAT (210) GGSs GGSs RIG RIG RIG S/Vs RIG RIG RIG RIG RIG RIG CTFs F/Ps RIGs GGSs CTFs RIGs F/Ps RIGs RIGs RIGs F/Ps RIGs RIGs F/Ps F/Ps RIG SCOPR MINAR MARR

(K.G, AMD & ANK Assets )

OFFSHORE INSTALLATIONS

(Offshore, ER & Mumbai) ( Nazira & Cauvery Assets ) GGSs CTFs CTFs GGSs RIGs

Note:KU band Network in ER is under implementation.

87

Leased/OFC Network

Primary Satellite Link Primary Satellite Link

Leased OFC Leased OFC EPAX EPAX EPAX EPAX Analog/Digital Phones Analog/Digital Phones Analog/Digital Phones Analog/Digital Phones IP Phones IP Phones IP Phones E&M Trunk E&M Trunk E&M Trunk E&M Trunk IP Trunk IP Trunk IP Trunk IP Trunk Integrated EPAX through

88 VoIP – IP Trunking •30 channel •Programmable for 8 to 64 kbps •Additional to E&M •Hard Phones •Soft Phones

Call Centre Applications

•3 Agents and One Supervisor •Automatic Call Distribution

89

VOIP Network of ONGC

90