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1
Communication Communication
NetworksNetworks
in in
ONGCONGC
G R Kanel, C E ( E & T)
Infocom Services Tel BhawanDehradun
2
Types of Transmission Media
Guided Media: Copper Wire
• Twisted Pair
• Coaxial Cable
• Optical Fiber
Un-Guided (Wireless) Media: Radio Waves
Microwave
Satellites
Infrared waves
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 All-IP-based, 100 Mbps data
4
Telecommunication Systems DataVoiceVideo
SCADA SystemsTelemetry & Tele-controlInstrumentation
Information SystemsData BasesApplicationsNetworking Systems
System Building Blocks
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
WHAT WE HAVE TODAY ?
6
Information Technology systems
WAN – Wide Area Network LAN -Integrated local area networksEnterprise-wide applications
ICE WEBICE Internet/ Intranet EPINET for Producing Assets and
Reservoir Management
WHAT WE HAVE TODAY ? Contd..
7
What is Microwave Communication ?
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.
Long-distance can be cover by putting repeater.
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
clear line-of-sight.
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
Why Repeater Required ?
11
ModeMax 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
Why Repeater Cont..
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
43KM12.5KM
18KM
Proposed Point to Point Microwave links in Western Offshore
14TDMA RADIO NETWORK- MUMBAI HIGH
NQO
N4
ND
N6
NONH
NE
NSLB LD
NXN7
NW
NT
N3
LCLA
LE
NQO FIELD
NR
N8NP
SHP
IT
II
IJ
IH
SS
ILSYIW
IMIN
EC
ED
SW
SV
SU
IE
EE
B121
S1-6
S1-5
S1-4
SHP FIELD
IK
BHN FIELD
BHN
N1
NB
NV
NJ
N5NM
N2
NU
NK
WA
NI
ICP/ICW
IB
ID
IASM
SR
SD
IQ
ISIU
WB
ICP FIELD
SG
BHS FIELD
BHS
IFSN
IG
NL
SQEB
SB
SE
SF
SI
SJ SK
SP
ST
WI-6IP
SCA
2.8
22.9
29.2
2.211
11.8
11.8
1.4
2.0 19.4
2.1
14.3
(8 Km.)
(12.7 Km.)
(18.1 Km.)
(19.
8 Km
.)
(6.5 Km.)
(15.2 Km.)
(22.
1 Km
. )
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, MumbaiON-SHORE POINT-TO-MULTIPOINT NETWORK in MR, Mumbai
TDMATDMARADIORADIO
ARCADIAARCADIA
T&ST&S
NHAVA STORESNHAVA STORES
DARULKHANA STORESDARULKHANA STORES
BASE STATIONBASE STATIONVASUDHARA BHAVANVASUDHARA BHAVAN
TECTEC
PRIYADARSHINIPRIYADARSHINI
BUTCHER ISLANDBUTCHER ISLAND
ANDHERIANDHERI
HELIBASEHELIBASE
BPCLBPCL MORMOR
URANURAN
2 GHz RADIO LINK
2 GHz RADIO LINK
2 GHz RADIO LINK
2 GHz RADIO LINK
KARANJIAKARANJIA
UHF
LINK
UHF
LINK
RCF TROMBAYRCF TROMBAY
REPEATER-0REPEATER-0 TROMBAYTROMBAY
REPEATER-1REPEATER-1MAKER TOWERMAKER TOWER
BENGAL CHEMICALSBENGAL CHEMICALSM. DOCKM. DOCK
M. T. 1M. T. 1
2 GHz Digital Point tp Point Radio
TDMA Radio
16
ASSAM ASSET FIELD COVERAGE
ASSAM ASSETASSAM ASSET
17
JORHAT BASIN
JORHAT BASINJORHAT BASIN
18
NaziraNazira
Geleki Geleki
LakwaLakwa
SibsagarSibsagar
RudrasagarRudrasagar
CinnamaraCinnamaraJorhat Jorhat
Koraghat/NambarKoraghat/Nambar
Communication Coverage in ERCommunication Coverage in ER
( NOT TO SCALE( NOT TO SCALE ) )
20KM
20 KM
15KM200KM
58 KM
30 KM
40 KM
GGS
GGS
JORHAT CTF
SilcharSilchar
BorhollaBorholla
12 KM GGS
Satcom Link
TDMA Link
Radio Trunking
Point to Point Dig. Radios
49 KM
19
WOBU 13 HOP LINK (OLD)WOBU 13 HOP LINK (OLD)
20
PTP Map of Western onshore
21
KLL
NGM
AKH
KT/KNK 7
DBK
GandharPLJ
KOS
Mehsana
Ahmedabad
AKH
Cambay
KT/KNK 7
VadodaraDBK
Ankleshwar
KOS
Hazira
Existing Commn. Network in WR
22
INTEGRATED RADIO TRUNKING NETWORKINTEGRATED RADIO TRUNKING NETWORKCAUVERY PROJECTCAUVERY PROJECT
......... ......... .........PRODUCTION
INSTALLATION
DRILLINGRIG
DSA
RADIO BASESTATION( 4+1 CHNLS)
MOBILEEXCHANGE
EPABX DMR
......... .........ADIYAKAMANGALAM
INFFRASTRUCTURE
......... .........
EPABX
DMR
PSTN LINES( DOT )
NERAVYINFRASTRUCTURE
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 WorkTwo 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
Point-to-Point Satellite Link
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.
Higher Bandwidths are available for use.
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 usedService 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)
• Example: Satellite Phones
Types of SatellitesSatellite Orbits
GEO
LEO
MEO
Molniya Orbit
HAPs
Frequency Bands
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
Geosynchronous Satellite Communications
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 applications.
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 than LEO satellites.
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 OrbitsMolniya 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.
Useful in near polar regions.
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
Ka-Band: 26.5 to 40 GHz: used by FSS
45
Broadcast Link
Multiple receivers
Transmitter
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
Advantages over FDMA
FDMASatellite 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.
TDMATDMA (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 and DAMA) as FDMA does.
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 NetworkingThe 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 FieldedShipping Spring
2010Modem Includes NSA EvaluatedFIPS 140-2 TRANSEC
Type 1 HAIPE Network Encryptor
for COMSEC
Current SATCOM Security Approach
Terminal PropositionFaster, 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
2.4mKu
LAN MGT
SIPRNIPRBattalion Command
Post Node
2.4mKu
LAN MGT
SIPRNIPR
56
Major problems for satellites
Positioning in orbit
Stability
Power
Communications
Harsh environment
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 Less bandwidth supported.
58
ONGC’s SATCOM Networks C-BAND SATCOM NETWORKS
OPSNET
TELNET
DRILLNET ( MCPC )
ICNET ( DAMA & PAMA)
INMARSAT
MF-TDMA
Ku-BAND SATCOM NETWORKS
59
Technical Parameter of C-Band
Satellite : ( INSAT 3E ) 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
36 MHz SPADE Spectrum
(382
5 M
Hz)
C
G 0
VA
TM
S
ICENET
38
30.0
MH
z
3837
.4 M
Hz
3
838.
2 M
Hz
3
839.
0 M
Hz
3
839.
8 M
Hz
3
840.
6 M
Hz
3
841.
4 M
Hz
3
842.
2 M
Hz
3
843.
0 M
Hz
0.6
25 M
SP
S
3828
.0 M
Hz
3826
.7 M
Hz
3838
.6 M
Hz
3839
.4 M
Hz
3840
.2 M
Hz
3841
.0 M
Hz
382
6.7
MH
z38
42.6
MH
z
0
.625
MS
PS
0
.625
MS
PS
0.
625
MS
PS
0.
625
MS
PS
0.
625
MS
PS
0
.625
MS
PS
5.
0 M
SP
S
3
837.
0 M
Hz
3837
.8 M
Hz
38
29.5
MH
z
38
28.4
MH
z 0
.625
MS
PS
0.6
25 M
SP
S38
29.1
MH
z
3828
.34
MH
z
38
27.6
MH
z
1.2
5 M
SP
S
3827
.5 M
Hz
38
25.9
MH
z
ICE
NE
T B
AC
KH
AU
L
38
24.7
4 M
Hz
38
23.9
4 M
Hz
(384
3 M
Hz)
(380
7 M
Hz)
Transponder Carrier Allocation
Bandwidth DistributionSatellite/ Transponder : INSAT – 3E # 15Bandwidth : 36 MHzPower : 38 dBW ( 6 dB BO) NETWORK ACCESS
TECHNOLOGYNo.of Channels No.of Stations
using the facilityBW (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
TOTAL 339 36.00
…ONGC’sONGC’s Networks NetworksOPSNET:• 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 CHANNELSTELNET SATELLITE CHANNELS
51XXX51XXX
DEHRADUNDEHRADUN
56XXX56XXX
CHENNAICHENNAI
58XXX58XXX
NAZIRANAZIRA
57XXX57XXX
CALCUTTACALCUTTA
54XXX54XXX
BARODABARODA
53XXX53XXX
DELHIDELHI
TELNET/HOT-LINE EPAX NETWORKTELNET/HOT-LINE EPAX NETWORK
INSAT-3E
DOT HOTLINE LEASED CIRCUITSDOT HOTLINE LEASED CIRCUITS
55XXX55XXX
MUMBAIMUMBAI
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 augmented8 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.
…ONGC’s NetworksONGC’s Networks
66
Satellite
Remote1 Remote2NMS
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.
Dynamic Allocation of DAMA Channel
67
6.1M
11M
11M
DEHRADUNDEHRADUN URAN URAN -- NMSNMS
NAZIRANAZIRA
7.5M
3.8M
HAZIRAHAZIRA
4.5M
ANKLESHWARANKLESHWAR
AHMEDABADAHMEDABAD
4.5M
JODHPURJODHPUR
4.5M
RAJAMUNDRYRAJAMUNDRY
4.5M
BARODABARODA MUMBAIMUMBAI DELHIDELHI CHENNAICHENNAI
KOLKATAKOLKATA
AGARTALLAAGARTALLA
4.5M 4.5M
4.5M
4.5M
MEHSANAMEHSANA3.8M
CAMBAYCAMBAY
PANVELPANVEL
3.8M
3.8M
JORHATJORHAT3.8M
SILCHARSILCHAR
3.8M
KARAIKALKARAIKAL3.8M
NARSAPURNARSAPUR
-
INSAT-3E
4 V &
2D
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 &
10 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
OFFSHOREOFFSHORE
11M
7.5M
Process Platform Process Platform : 09: 09Drilling RigsDrilling Rigs :10:10
BHS,BHN,ICP,NQO,SHP,BPA,BPB,HRA,NLM
EXISTING SATCOM LINKS (VOICE & DATA)
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.
…ONGC’s NetworksONGC’s Networks
69
MUMBAI OFF-SHORE COMMUNICATION NETWORKMUMBAI OFF-SHORE COMMUNICATION NETWORK
2 Mb Lease Line
PRIYADARSHINI
RIG
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 RIGS( Except Vijay & Bhushan)
72
MF- TDMA SATCOM SYSTEM
Field Installations Communication
Band width on Demand
Virtual Hub Concept
Mixed Topology (Star & Mesh)
Common Bandwidth for Voice & Data
VOIP
TYPE OF STN
AUGME-NTATION
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
BRDV-HUB
11Mtr
URNV-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
2.4Mtr
OFF/S DR=8
2.4Mtr
JDH
4.5mtr
ANK
Asset HQ
MHN
4.5mtr
Asset HQAsset HQ
4.5mtr
Asset HQ
CBY
3.8mtr
Asset HQ
DLI
4.5mtr
DATA CNTR.
11Mtr
DDNV-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 HQCHN
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
L2SWITCH
TT_2
TT_1
12:1 COMBINER
1:12Splitter
IF to L-Band / L-Band to IF
L3SWITCH
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
InternetProxyServer
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 Server10.205.2.133-137/27
Catalyst 4506 L3 Switch10.205.10.236
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
RemoteLinkway 1
RemoteLinkway 2
RemoteLinkway 3
Ethernet 1
IP 10.207.2.185/29
VLAN 21(IP 10.207.2.188)
InternetProxyServer
IP 10.205.46.22 Port 8080
(ddn-ses1)Cisco router
78
Client PC3
Client PC2
Client PC1
In sat 3EMail, Intranet, Internet and SAP Servers
2 MB Leased Line
VLAN 4
ONGC LOGICAL NETWORK DIAGRAM
RemoteLinkway 1
RemoteLinkway 2
RemoteLinkway 3
VLAN 21(IP 10.207.2.188)
InternetProxyServer
IP 10.205.46.22 Port 8080
(Mumbai)Cisco router
MUMBAI
L2 SWITCH
L3 SWITCH
(Delhi)Cisco router
79
Layer-3 Switch10.205.127.50/23
IP 10.205.127.248/23
Leased Line
Leased Line
ONGC GEO-RED SETUP
IP 10.205.10.242/24
ANCC ServerNCC Server MRT AMRT
Layer-3 Switch10.205.10.236/24
IP 10.205.10.242/24
IP 10.205.10.240/24IP 10.205.127.247/23
Delhi RouterDehradun
RouterURAN
Router
BackupNCC Server
BackupMRT
IP 10.205.10.240/24
Layer-2 Switch10.205.10.244 Layer-2 Switch
IP 10.205.127.236
80
ERP, Intranet & InternetPro
dn
. S
CA
DA
Mai
l11Mtr
DDNV-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, Int
rane
t, In
tern
et
& dril
ling
SCADA
81
ERP, Intranet & InternetPro
dn
. S
CA
DA
Mai
l11Mtr
DDNV-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, Int
rane
t, In
tern
et
& dril
ling
SCADA
82
MOD
DEMOD
MOD
DEMOD
MOD
DEMOD
COMBINERCOMBINER
SPLITTER
NE
TW
OR
KM
AN
AG
EM
EN
Tand C
ON
TR
OL
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-AHPA-A
SWITCHING SWITCHING UNITUNIT
HPA-BHPA-B
LNA-ALNA-A
LNA-BLNA-B
SWITCHING SWITCHING UNITUNIT
SWITCHING SWITCHING UNITUNIT
SWITCHING SWITCHING UNITUNIT
UP CONV.-A
DN CONV.-B
DN CONV.-A
UP CONV.-B
ANTENNA
BASE BAND EQUIPMENTS
83
INSAT-3EINSAT-3E
SATELLITE COMMN.SATELLITE COMMN. SETUP SETUP AT DEHRADUNAT DEHRADUN
COMBINER
UP CONVERTERS
MO
D
DE
MO
D
MO
DD
EM
OD
MO
D
DE
MO
D
SPLITTER
NETWORKMANAGEMENTand CONTROL
DN CONVERTERS
LOW NOICE AMPLIFIERS
HIGH POWERAMPLIFIERS
MUX
RADIO
MUX
RADIO
18GHz RADIO Link
TELNET/TELNET/HOTLINE HOTLINE EPAXEPAX
KDMIPEKDMIPE TEL BHAVANTEL BHAVAN
VOICE CH.VOICE CH.
DATA CH.DATA CH.
24
38
ROUTER/ROUTER/SWITCHSWITCH
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)
Offshore Rig VSATS
NetworkNetwork 11M/11M/
9.0M9.0M
7.57.5 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(50)0)
134134
C-SeriesC-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
15RCF
4
BRHL
SRP
TDMA SYSTEM
C-BAND SATCOM E/S
OFC LINK (Leased Ckt )
TRUNKING SYSTEM
KU-BAND SAT (210)
GGSsGGSs
RIG
RIG
RIG
S/Vs
RIG
RIG
RIG
RIG
RIG
RIG
CTFs
F/Ps
RIGsGGSs
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.
INSAT-3E
87
Leased/OFC Network
Primary Satellite LinkPrimary Satellite Link
Leased OFCLeased OFC
EPAX
EPAX
EPAX
EPAX
Analog/DigitalPhones
Analog/DigitalPhones
Analog/DigitalPhones
Analog/DigitalPhones
IP PhonesIP Phones
IP Phones
E&M Trunk
E&M Trunk
E&M Trunk
E&M TrunkIP Trunk
IP Trunk
IP Trunk
IP Trunk
Integrated EPAX through ICNET & VOIPs
88
VoIP – IP Trunking
•30 channel
•Programmable for 8 to 64 kbps
•Additional to E&M
•Hard Phones
•Soft PhonesCall Centre Applications
•3 Agents and One Supervisor
•Automatic Call Distribution
•Integrated Automated Attendant
89
VOIP Network of ONGC
90
Location Vise VOIP Network
91
