Draft Specification of Integrated Communication System for ...

of 19 Effective from: ------------- RDSO/SPN/TC/109/2019 Rev. 0.0

Draft Specification

of

Integrated Communication System for Tunnels

SPECIFICATION NO. RDSO/SPN/TC/109/2019

Revision 0.0

Number of Pages: 19

TELECOM DIRECTORATE

RESEARCH DESIGNS & STANDARDS ORGANISATION

LUCKNOW-226011


DOCUMENT DATA SHEET

Specification

RDSO/SPN/TC/109/2019

Revision

0.0

Title of Document

RDSO Specification

for

Integrated Communication System for Tunnels

Author

Director/ Telecom-I/ RDSO

Approved by

Executive Director/ Telecom/ RDSO

Abstract

This document specifies technical specification of Integrated Communication

System for Tunnels.


DOCUMENT CONTROL SHEET

NAME

ORGANIZATION

FUNCTION

LEVEL

Director/ Telecom-I

RDSO

Member

Prepare

Executive Director/ Telecom

RDSO

- Approve


I. SUMMARY:

This document covers the technical requirements of Integrated Communication

System for Tunnels on Indian Railway network of varying lengths.

II. SOURCE:

Draft specification RDSO/ SPN/ TC/109/2019, Rev 0.0 have been prepared by

RDSO, Lucknow as per Railway Board letter No. 2006/Tele/TC/1/Pt dated

15/07/2015.

III. FOREWORD:

RDSO/ SPN specification is issued as draft specification. This specification is circulated to customers/ Railways and field inspection units for comments. In the absence of IRS specification, procurement may be made as per RDSO/ SPN specification.

Wherever, reference to any specifications appears in this document, it shall be taken as a reference to the latest version of that specification unless the year of issue of the specification is specifically stated.


RESEARCH DESIGNS & STANDARDS ORGANISATION MINISTRY OF RAILWAYS

MANAK NAGAR, LUCKNOW

Specification of Integrated Communication System for Tunnels

RDSO Specification No. RDSO/SPN/TC/109/2019 Revision 0.0

1.0 SCOPE:

1.1 This specification covers technical requirement of equipments for Integrated Communication System for Tunnels on Indian Railway network of varying lengths.

1.2 These tunnels can broadly be categorized in three categories i.e. tunnels less than 500 meters, more than 500 meters to 1000 meters and tunnel more than 1000 meters length. Requirement of integrated communication need for above categories will be slightly different.

1.3 VHF Simplex and GSM-R/LTE-R communication are to be extended in Tunnels for communication during maintenance and constructional blocks, communication in the train in between Guard & Driver, Emergency radio communication between driver, guard, station master & Cabin.

1.4 Frequency Band 146-174 MHz for VHF Simplex communication and 876-915 MHz(Uplink) & 921-960 MHz(Downlink) for GSM-R communication are allotted in Indian Railways. 700 MHz band are recommended to be allotted for LTE-R for Indian Railways.

1.5 Integrated Communication System in tunnels where ever provided on Indian Railway shall be able to extend following communications in Tunnels as per Table -1 below :

Table-1

S. No.

Communication system Description

Tunnels less than 500 meters

Tunnels more than 500 meters to 1000 meters

Tunnels more than 1000 meters

1. VHF Simplex Radio Communication

Yes Yes Yes

2. GSM-R/LTE-R Communication

Yes Yes Yes

3. PA System No Yes Yes

4. CCTV System No Yes Yes

1.6 Schematic diagram for all type of tunnels as per length are mentioned at

figure 1, 2 & 3 of specification.


2.0 General Requirement: 2.1 Original Equipment Manufacturer (OEM) of Integrated Communication

System for Tunnels or its authorized representative shall have service facility in India.

2.2 All software and firmware upgrades shall be free of cost for a period of five

years or as specified by purchaser. 2.3 The integrated communication system shall be connected to centralized

tunnel control room which shall be either at adjacent station or Divisional Control HQ controlling 2 to 3 tunnels.

2.4 The Tunnel Radio System shall provide an uninterrupted radio

communication inside tunnel with the headquarters and operation centers and handheld devices of the tunnel operator’s staff, emergency staff and trains which pass the tunnel.

2.5 The communication of all channels in the tunnel shall be independent,

simultaneous and failure-free. 2.6 It shall be possible to continuous coverage over the entire length of the

tunnel, clear audio though out with no interference, reliable system operation under harsh tunnel environmental conditions, trunked radio channels across many bands and ease of system operation and maintenance.


3.0 System Description:

3.1 Following sub systems are required in Tunnel to extend communication in Tunnels as per Table -2 below:

Table: 2

SN Systems Tunnels less than 500 meters length

Tunnels more than 50 meters to 1000 meters

Tunnels more than 1000 meters length

VHF GSM-R/ LTE-R

VHF GSM-R/ LTE-R

VHF GSM-R/ LTE-R

1. Optical Master Unit

No No No No Yes Yes

2. Optical Remote Unit

No No No No Yes Yes

3. Digital Channel Selective Repeater

Yes Yes Yes Yes No No

4. Leaky Cable Yes Yes Yes Yes Yes Yes

5. Antenna Yes Yes Yes Yes No No

5. Optic Fibre cable No No No No Yes Yes

6. Power supply unit for OMU & Repeaters

Yes Yes Yes Yes Yes Yes

3.1.1 Optical Master Unit (OMU):

The OMU supports cellular 2G, 3G, 4G services up to 2700MHz & public safety services FM/VHF/UHF on the same enclosure and is used in combination with one or several fibre fed repeater(s). The OMU is used to convert signals from RF to light when fibre fed repeaters is used at the remote end of the optical link. The OMU is a headend system that can be connected directly to a base station or off-air device such as a digital repeater or bi-directional amplifier. For larger tunnels with multiple bands, a Point Of Interface (POI) unit may be required to condition Uplink and Downlink RF signals between the BTS/Off-air Repeater and the OMU.

In the downlink direction, the OMU picks up the signal from the BTS, converts it into an optical signal and transfers it over a fibre optical cable to the repeater. In the uplink direction, the OMU receives the signal from the remote repeater via the fibre optical cable, converts it to a RF signal and sends it back to the base station. OMU shall be used in more than 1000 meters lengths tunnels.


RF Parameters

Frequency bands 68-500/380-2700 MHz

Gain flatness Typical 2 dB

Number of Optical modules Upto 8

Nominal RF input power +10 dBm composite power

Absolute maximum RF input power

+23 dBm composite power

Laser class Class 1

Optical Module Electrical Specification

Optical Wavelength 1310 ± 10 nm or 1330 ± 10 nm Downlink

1510 ± 3 nm or 1530 ± 3 nm or 1550 ± 3 nm or 1570 ± 3 nm or 1590 ± 3 nm Uplink

RF Parameters

Opto Module 1310 or 1330

Opto Splitter (SCC) +5 ± 2 dBm

Maximum Optical Input Power

+5 dBm

Output Power (Tx) max +7 dBm

Operating temperature 5 ˚ C to 45 ˚ C

Automatic fiber optic loss compensation

Yes

Power Requirements

Power requirement 230 AC 50Hz or 24V/-48V DC

Power consumption Typical 50 W

External Electrical Interfaces

Local Maintenance Terminal RS232

RF Ports N-type Connector Female

Optical Ports SC/APC

AC/DC Mains Input AC: IEC Connector. DC: Terminal Block

External alarms Via Front panel

Modem connector RJ45 or RJ11

Ethernet connector RJ45

Mechanical Specifications

IP rating IP20


3.1.2 Optical Remote Unit(Repeater):

Optical Remote unit is used at the remote end to convert Optical Signal to RF Signal and then transmit it into Leaky cable in the particular area to cover the tunnel for the wireless communication. It is connected to Optical Master Unit. Optical Remote unit shall be used to provide coverage in more than 1000 meters lengths tunnels. Details of Remote unit are as under:

Electrical specifications VHF GSM/LTE-R

Frequency ranges 138 - 174MHz Uplink 138 - 174MHz Downlink

For GSM: 880 - 915 MHz Uplink 925 - 960 MHz Downlink For LTE-R: 700MHz band

Filter Pass Bandwidth 100kHz to 5MHz

Duplex frequency Spacing 10MHz typical with Options down to 3MHz

Impedance 50 Ω

Output power Composite +25 dBm Composite

Gain 30 – 60 dB in 1dB steps

Noise Figure <4dB typical at maximum gain

ALC Implemented

Power Requirements 230VAC 50Hz or -48 VDC

Power Consumption 160 W

External connections

Local Maintenance Terminal

RS232

RF ports N type female

Mechanical specification

Enclosure Aluminium (IP65)

Cooling Convection

Mounting Wall mounted Environmental

Operating Temperature -25˚C to +55˚C

Humidity ETSI EN 300 019-2-4

3.1.3 Digital Channel Selective Repeater(D-CSR):

The D-CSR is used to extend RF Signal to the Leaky cable in the particular area to cover the tunnel for the wireless communication.

The D-CSR with antenna shall be used to provide coverage in less than 1000 meters lengths tunnels.


Electrical specification VHF GSM-R/LTE-R

Frequency Range 138 - 174 MHz Uplink

138 – 174 MHz Downlink

For GSM:

876-915 Uplink

921-960 Downlink For LTE-R: 700MHz band

Number of Passband 2 in both Uplink and Downlink

---

Number of channels Up to 8 2

Impedance 50 Ω

Noise figure <4 dB typical at maximum gain

2.5 dB typical,

< 3dB at max gain

Gain 65 to 95 dB in 1 dB steps

Power requirement

Power requirement 230V AC 50Hz or -48V DC

Power consumption 160W, typical

External Connection

Local Maintenance Terminal RS232

RF Ports N type female

Mechanical

Cooling Convection

Mounting Wall Mounted

Enclosure Aluminium (IP65)

Environmental

Operating temperature -25 ˚ C to + 55 ˚ C

Humidity ETSI EN 300 019-2-4

3.1.4 Leaky Cable:

For Wireless communication (VHFSIMPLEX/LocoTrol/GSM-R/TCAS/LTE-R ETCS) inside the tunnel FRLS-0H rated Leaky cable shall be provided.

7/8” Leaky Cable shall runs per tunnel for Rx. Path of the VHF Frequency and 1-5/8” Leaky Cable runs per tunnel for the Higher frequencies (GSM-R/LTE-R etc.) + Tx. path for the VHF frequencies for Indian Railways. Leaky cable shall consists of:-

(i) 7/8” & 1/2" RF Feeder Cable in FRLS-0H Jacket with proper connectors for interconnection between Optical Remote Unit and Leaky Coaxial Cable.

(ii) Leaky Cable Accessories Kit, connectors & installation Kit for 7/8" & 1-5/8" Leaky Cable

(iii) Cross band couplers, Dividers, Directional couplers, RF terminations and RF Accessories


Specifications Cable Type

7/8” 1-5/8”

Construction Materials

Jacket LSZH Polyolefin or PE

Dielectric Foam PE

Inner Conductor Corrugated copper tube

Jacket Color Black

Outer Conductor Copper foil

Dimensions

Diameter Over Jacket, maximum

27.686 mm 49.784 mm

Inner Conductor OD 9.4490 mm 18.1610 mm

Outer Conductor OD 24.130 mm 43.815 mm

Cable Weight 0.42 kg/m 0.83 kg/m

Electrical

Operating Frequency Band

50 – 2800 MHz 50 – 2700 MHz

Polarization Vertical

Velocity 91 % 93 %

Cable Impedance 50 ohm ±2 ohm

DC Resistance, Inner Conductor

1.435 ohms/km

DC Resistance, Outer Conductor

3.400 ohms/km 1.969 ohms/km

Insulation Resistance 100000 MΩkm

Jacket Spark Test Voltage (rms)

8000 V 10000 V

Peak Power 91.0 kW 302.0 kW

Environmental

Operating Temperature -30 °C to +80 °C

Mechanical

Bending Moment 15.0 N-m 16.0 N-m

Tensile Strength 215 kg

Fire Retardancy Test Method

IEC 60332-1

Smoke Index Test Method

IEC 61034

Toxicity Index Test Method

IEC 60754-1

Standard Conditions

Attenuation Test Method IEC 61196-4

Attenuation Tolerance ±5%


Attenuation, Ambient Temperature

20 °C

Coupling Loss Test Method

IEC 61196-4

Coupling Loss Tolerance ±10 dB ±5 dB Electrical Performance

Frequency Attenuation (dB/100 m)

Coupling Loss 50%

Coupling Loss 95%

7/8” 1-5/8” 7/8” 1-5/8” 7/8” 1-5/8”

75 MHz 1.10 0.50 56 67 62 76

100 MHz 1.30 0.60 56 67 68 79

150 MHz 1.60 0.70 61 77 72 86

350 MHz 2.50 1.20 72 77 82 83

450 MHz 2.80 1.40 75 75 86 78

800 MHz 3.80 1.90 75 69 86 71

900 MHz 4.10 2.10 73 68 84 70

960 MHz 4.30 2.10 74 69 86 72

1700 MHz 6.30 3.30 69 64 80 69

1800 MHz 6.40 3.50 69 61 79 65

1900 MHz 6.60 3.80 68 61 78 66

2000 MHz 6.90 4.20 67 60 78 67

2100 MHz 7.10 4.30 67 60 78 67

2200 MHz 7.40 4.60 68 60 80 67

2300 MHz 7.70 5.00 67 59 78 66

2400 MHz 7.80 5.40 66 57 77 65

2500 MHz 8.20 5.80 66 57 78 63

2600 MHz 8.30 6.50 67 56 78 63

2700 MHz 8.90 7.80 65 55 76 64

3.1.5 Antenna:

High performance and high gain Omni directional Antenna shall be arranged for open space for VHF and GSM-R and LTE-R wireless communication through separate repeater.

Omni directional Antenna arrangement consists of:

a) 6 dB Gain Omni directional Antenna

b) RG217 Coaxial cable with proper connectors

c) RF Lightning & Surge Protector

d) Post for fixing antenna.

3.1.6 Optical Fibre:

Base station shall be connected to the tunnel optical remote unit with Optical

master unit through OFC.


CCTV camera and PA Systems shall be also connected though Optic Fibre

whether CCTV camera and PA Systems are required for Tunnels.

OFC connectivity shall be provided by purchaser as per RDSO specification

no. IRS:TC 55-2006 with latest amendment.

3.1.7 Power Supply unit:

For Integrated Communication System in Tunnel, power supply unit with battery backup (230VAC 50Hz or -48 VDC) for OMU & Repeaters should be provided by supplier. For installing of system Railway shall ensure that 230V AC, 50Hz is available at the entrance of Tunnel and the location of the Optical Master unit at base station site.

4.0 PA system:

A Public address system shall be provided to inform/warn maintenance and service staff and give instructions to people in abnormal conditions during incident. Therefore loudspeakers shall be installed every 100 m in the tunnel. Purchaser should list out the items required to be installed in tunnels as per RDSO specification no. RDSO/SPN/TC/78/2008 Rev. 0.0 or latest.

5.0 IP Based Video Surveillance System:

IP based Video Surveillance System shall be provided inside tunnels to ensure that there are no blank spots over the tunnels. All the camera feed will be transferred to Tunnel Control Center/Divisional Control Room for viewing, recording and monitoring of tunnels through cameras. Purchaser should list out the items required to be installed in tunnels as per RDSO specification no. RDSO/SPN/TC/65/2019 Rev. 5.0 or latest.

6.0 Test Requirement:

6.1 Condition of Tests: 6.1.1 Unless otherwise specified all tests shall be carried out at ambient

atmospheric conditions. 6.1.2 Inspection and testing shall be carried out to the effect that all requirements of

this specification are compiled with. 6.1.3 Inspection shall be carried out for one complete system of Integrated

communication system for tunnel.


6.2 TYPE TEST: 6.2.1 For type test, one complete system shall be subjected to following tests as

applicable.

a) Visual Inspection (Clause 7.1) b) Performance test(Clause 7.2) c) Climatic and environmental requirements (Clause 7.2.2) d) Endurance test(Clause 7.3)

6.2.2 Any other tests shall be carried out as considered necessary be the

inspection authority 6.3 ACCEPTANCE TESTS:

6.3.1 The following shall constitute the acceptance tests which shall be carried out

by the inspecting authority for the purpose of acceptance on randomly selected 20% of items offered from the lot (minimum 1 each type of item) offered for inspection by the supplier:

a) Visual inspection of complete system (Clause 7.1) b) Performance test (Clause 7.2) c) Endurance Test(Clause 7.3) 6.3.2 Any other tests shall be carried out as considered necessary by the

inspecting authority. 6.4 Routine tests: 6.4.1 The following shall comprise the routine tests and shall be conducted by

manufacturer on every equipment and the test results will be submitted to the inspection authority before inspection.

a) Visual Inspection of complete system (Clause 7.1) b) Performance test (Clause 7.2)

7.0 Test Procedure:

The test procedure shall be based on the system design. The methodologies

to be adopted for various tests shall be decided taking into account the system design/configuration.

7.1 VISUAL INSPECTION:

Each equipment of the system shall be visually inspected to ensure compliance with the requirement of clause 3 of this specification.


7.2 PERFORMANCE TEST: 7.2.1 The equipment shall comply with the requirements as specified in clauses 2 &

3. 7.2.2 CLIMATIC AND ENVIRONMENTAL REQUIREMENTS:

7.2.2.1 The equipment shall meet the following climatic and environmental

requirements:

SN TEST REFERENCE

1. Cold test Category B2 of QM-333

2. Dry heat test -- do --

3. Damp heat test (Cyclic) -- do --

4. Rapid temperature cycling test -- do --

5. Damp heat test (Steady state storage) -- do --

6. Vibration test -- do --

7.3 ENDURANCE TEST:

7.3.1 During type test, endurance test shall be conducted on complete system for

continuous operation which shall be 168 Hrs at ambient room temperature without giving any deterioration.

7.3.2 During acceptance test, endurance test shall be conducted on complete

system for continuous operation which shall be 48 hrs at ambient room temperature without giving any deterioration.

8.0 QUALITY ASSURANCE: 8.1 All materials & workmanship shall be of good quality. 8.2 Since the quality of the equipment bears a direct relationship to the

manufacturing process and the environment under which it is manufactured, the manufacturer shall ensure Quality Assurance Program of adequate standard.

8.3 Validation and system of monitoring of QA procedure shall form a part of type

approval. The necessary Plant, Machinery and Test instruments as mentioned in Schedule of Technical Requirements (STR) shall be available with the manufacturer.

9.0 REJECTION:

9.1 Any of the materials which do not comply with the requirements of this

specification may by rejected.


10.0 MARKING & PACKING: 10.1 The following information shall be clearly marked at a suitable place on each

equipment:

a) Name and address of the manufacturer. b) Year of the manufacturer. c) Serial number of equipment. d) Specification Number e) Schematic diagram of the equipment at suitable place.

10.2 The equipment and its sub assemblies shall be packed in suitable boxes and

the empty spaces shall be filled with suitable filling material. The equipment shall be finally packed in a wooden/suitable case of sufficient strength so that it can withstand bumps and jerks encountered in a road/rail journey.

11.0 TRAINING:

11.1 Onsite training shall be provided to the Railway staff which shall include complete assembly of the system through the use of various modules, integration of hardware with software and complete operation of the system.

11.2 Sets of training manual in two hard copies and two soft copies containing

details of technical specifications, installation and commissioning, trouble shooting & maintenance schedule etc. shall be supplied along with the equipment.

12.0 DOCUMENTATION:

12.1 The following documents should be supplied along with the system: 12.1.1 Mechanical drawings of each sub system/ rack. 12.1.2 Installation and maintenance manual incorporating trouble shooting

exercises, printed cards patterns, software etc. 12.1.3 Operating and troubleshooting manual including maintenance schedule. 12.1.4 Pre-commissioning check list. 12.1.5 Detailed installation and commissioning document including site topology

diagram.


13.0 Following Details are required for Integrated Communication System for Tunnel:

Item to be provided by Supplier Details to be furnished by Purchaser

Optical master unit as per Tunnel Length (>1000 mtr.)

Length of tunnel & Number of Tunnel Tubes

Optical remote unit as per Tunnel Length(>1000 mtr.)

Digital Channel selective repeater as per Tunnel Length

7/8” & 1-5/8” Leaky cable Leaky cable ---

7/8” & 1/2" RF Feeder Cable with proper connectors as per requirement & OFC Cable for length of tunnel

OFC connectivity from Optical master unit at base station site to Optical remote unit & for Video Surveillance System and PA System at the entrance of Tunnel to be provided by purchaser

Leaky Cable accessories kit, connectors & installation kit for 7/8” & 1-5/8” Leaky cable as per requirement

Cross band couplers, Dividers, Directional Couplers, RF terminations and RF accessories as per requirement

Antenna as per requirement ---

RG217 Coaxial cable with proper connector (length as per site requirement)

RF Lightning & surge protector

Post for fixing antenna (length as per site requirement)

Power supply unit for OMU, Repeaters 230V AC, 50Hz at the entrance of Tunnel and the location of the Optical Master unit at base station site

Video Surveillance System as per purchaser requirement

List out the item and quantity required to be installed in tunnels for Video Surveillance System as per RDSO specification no. RDSO/SPN/TC/65/2019 Rev. 5.0 or latest.

PA System as per purchaser requirement List out the item and quantity required to be installed in tunnels for PA System as per RDSO specification no. RDSO/SPN/TC/78/2008 Rev. 0.0 or latest.


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