1. TETRA IN A MASS RAPID TRANSIT ENVIRONMENT (Singapore)
Presented by:
Lee Thong Perng

2. Singapore 23 km 42 km Population: 4.2 m Land Area: 685 km2
707,000 vehicles
3,100 km of roads
140 km rail network

3. Development Along MRT Corridors
Town planners decentralised the population into New Towns away from city centre, but connecting them by an efficient transport system
Concentrate the highest density developments around major transport nodes (MRT stations)
Economic benefits
stimulates investment
creates employment
enhances land values

4. The Land Transport Authority
The Land Transport Authority (LTA) is the provider and owner of all road and rail infrastructure.
Our Mission: “To provide an efficient and cost effective land transport system for different needs.”

5. What is Mass Rapid Transit ?
A passenger carrying railway with capacity in excess of 1500 persons per train.
Underground and Aboveground.
Frequent train services.
Short station stopovers.
The most efficient means of moving people in an urban environment.

6. Present Development N MRT No. of lines 3 Route length (km) 109
North-South Line
North Est Line
East-West Line
Existing North-South, East-West Lines, Changi Airport Extension and North-East Lines have 67 stations and cover more than 109 km.
MRT
No. of lines 3
Route length (km)
No. of stations
No. of depot 4

7. Development Y2010 N Circle Line Length: 172 km Stations: 139
Completion:
(In 3 Phases)
2007/2008/2010
Circle
Line
Circle Line Projects are due for completion before 2010 adding 29 new stations and a further 33.5 km.
Length:
Stations:
172 km
139 N

8. Existing North-South, East-West Lines, Changi Airport Extension and North-East Lines have 67 stations and cover more than 109 km.

9. Rail Transit Development Programme
(Under Study)
Rail Transit System By Y2015
BKL
JRL
ETL N

10. The Singapore MRT
The current MRT Network is operated by Singapore Mass Rapid Transit Ltd (SMRT) and Singapore Bus Service Transit Ltd (SBST).

11. The Modern MRT Highly Automated.
Increasingly Reliant on Fail-Safe Computer Based Systems.
Decreased Staffing Levels demands more effective means of communication.
Highly Reliable and Flexible Radio Communication is required for effective command and control purposes.

12. Fully Automated MRT
Fully automatic operation requires that all functions of the driver be automated.
Operation Control Centre must become the driver’s eye.
Efficient data transmission plays a key role in rapid indication and diagnosis of train-borne system faults.
Consistently clear communication with passengers is essential at all times.

13. Radio Requirements Digital Technology
Benefits from Digital Signal Processing.
Robust and Reliable Communication Link.
Combined Voice and Data Services
Simultaneous Voice and Data Transmission.

14. Radio Requirements Automated Resource Management
Bandwidth Occupancy only when Needed.
Increased Capacity through Shared Resources and Trunking Schemes.

15. Radio Requirements Ease of Expansion Advanced Networking Capabilities
Modular System.
Support Future Network and Channel Growth.
Advanced Networking Capabilities
Inter-working with Other Networks.

16. Radio Technology
Why TETRA ?

17. Why TETRA ? Frequency Economy Security for Critical Data
Interleaving 4 Channels in a single 25kHz Carrier via TDMA scheme.
Security for Critical Data
Data Integrity through Forward Error Correction.
Consistent Voice Quality
No Analogue Circuit Degradation Caused by Noise and Distortion.
Less User Frustration and Stress.

18. Why TETRA ? Flexible Communications
Supports both Voice and Data applications.
Efficient Command and Control (fast call set-up, subscriber identification, priority management, individual, group and broadcast calls).

19. Why TETRA ?
Automated Voice/Data Traffic Routing and Network Flexibility
Software Based Configurable Architecture.
Trunked System Controller.
Roaming between Systems.

20. Flexible Communication
Trainborne Alarms
Emergency Broadcast
to passengers
Please Stay Calm …….
Please Stay Calm
Help is on the way …..
Trainborne Display
Live PA Broadcast
Combined Voice & Data

21. Why TETRA ? Contributes to High Service Availability
Remote Monitoring and Diagnostics.
Efficient Incident Management.

22. for Incident Management
Dynamically
Grouped
Calls
Grouped
Data or Voice
Communications
for Incident Management
Base
Station
Incident Area

23. for Incident Management
Dynamically
Grouped
Calls
Grouped
Data or Voice
Communications
for Incident Management
Base
Station
Incident Area

24. Voice Traffic
Public Address Announcement from Control Rooms to Trains.
Passenger Communication with Control Rooms During Emergencies.
Automatic Telephone Patch to PABX Subscribers.
Patch to Station PA Systems.
Communication amongst operation and maintenance staff.

25. Emergency Communication PEC: Passenger Emergency Communication
Lower Priority
On Hold
Higher Priority
Control Centre
PEC
Low priority
calls
Passenger

26. Data Services Train-borne CCTV Selection from Control Rooms.
Remote Triggering of Train-borne Voice and Text Messages.
Updating of pre-stored Train-borne Text and Voice Message Libraries.

27. Data Services
Trainborne Passenger Information Display Data from Control Rooms.
Trainborne PA Control from Control Rooms.
Train Fault and Diagnostic Data from the Trains to Control Room and Maintenance Centres.

28. Remote Data Upload/Download
Voice
Comm.
Data Files Download
Crew
Member
Depot Control Centre
Train Fleet
Alarm Data

29. Essential Features Open Standard Interfaces Operational Flexibility
Voice Communication across Multiple Virtual Private Networks.
Interconnections with other TETRA compliant Networks.
Multi-Vendor Support.
Operational Flexibility
Software Control of All Aspects.

30. Typical Radio System Connectivity
Train
Train
Depot
Train
PSTN
Station
Control Centre
Depot Control
Portable
Station
ISI
Other Networks
Portable
Portable
Portable
Station Boundary
Station Boundary
Train
With Authorisation
Direct access
Trunk Line

31. Essential Features Easily Upgradable, Scaleable, Expandable
Programmable Options provide Flexibility.
Fully Synthesised, not Hard-wired.
Modular Hardware Design.
Ease in Migration of System Control
Control Functions can be allocated at any Dispatcher Location through Soft Configuration.

32. Conclusion LTA has chosen TETRA for the following main reasons:
Feature Rich Radio System.
Provides Secure and Highly Reliable Concurrent Voice and Data Communications.
Highly Flexible and Expandable Catering for Future Needs and Network Expansions.
Modular and Upgradable Software based System Protects the Investment.

33. Conclusion
It is for these reasons that Singapore has chosen TETRA as the preferred technology to support the operation of the Singapore MRT operations.
TETRA is likely to be the choice for future MRT lines as the transit infrastructure in Singapore continues to grow rapidly.

34. Thank You