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New Train-to-Ground Wireless Communication
Network and Excellent Broadband Experience
Huawei Mass Transit eLTE Multi-Service
and Unified Bearer Solution
Huawei Mass Transit eLTE Multi-Service and Unified Bearer Solution provides broadband, secure, and reliable
train-to-ground communication in high-speed and mobile scenarios, completely solving multiple problems of the
wireless train-to-ground system, including decentralized construction, weak mobile handover capabilities, and poor
interference resistance. This solution also implements comprehensive bearing of multiple services, such as
Passenger Information System (PIS), onboard video surveillance, Communication Based Train Control System
(CBTC), and dedicated scheduling, guaranteeing rail transport operation safety and efficiency improvement.
1
Mass Transit Wireless Application Scenarios
Wireless networks promote the transformation of mass transit production and operation modes
and improve operation safety and efficiency.
Video Surveillance
PIS
Information release, onboard
streaming media, video ads,
and disaster emergency
release
Multiple channels of HD
videos in compartments
and the driver's cab
CBTC
Secure and reliable
transmission of CBCT
information
Trunking Dispatching
Vehicle dispatching and
voice trunking
communication among
multiple work groups
Modern mass transit's requirements on wireless communication systems:

High-speed driving and stable access: High speed (a maximum of 160 km/h) poses a big challenge to stable access performance of wireless networks in high-speed,
mobile scenarios

Broadband service and refined management and control: One network bears multiple services such as HD streaming media and voice dispatching. A wireless train-toground communication network that provides large bandwidth and multi-service quality of service (QoS) guarantee is urgently needed.

Real-time surveillance and high-efficiency operation and maintenance (O&M): IT applications in the mass transit industry require simplified network architecture,
reliable devices, highly efficient network management to improve O&M efficiency.
2
Challenges on Traditional Wireless
Communication Systems
Existing train-to-ground wireless communication systems have many
problems. For example, surveillance videos cannot be backhauled,
PIS HD videos cannot be smoothly played, and network interference
keeps increasing. Traditional wireless systems cannot adapt to the
rapid development of mass transit services. Customers are in an
urgent need of a large-bandwidth, high-reliability train-to-ground
transmission system.
Poor
transmission
quality
What kind of train-to-ground wireless
communication system can meet these
challenges?
Stable large
bandwidth
Difficult
maintenance
Interference
resistance
Many
interference
sources
Frequent
handovers
MultiEasy to deploy
service QoS
and maintain
guarantee
Non-guaranteed
bandwidth
3
Huawei Enterprise A Better Way
Huawei Mass Transit eLTE Multi-Service and Unified Bearer Solution
Networking
Trunking dispatching platform
Central server
NMS server
Video server
NMS workbench
Core network device
Wired transmission network
Station subsystem
Station switch
Station
1
Station switch
Station
2
Track subsystem
Station switch
Station
3
Commercial LCX or
antenna coverage
Handheld terminal
Handheld terminal
Onboard subsystem
Onboard switch
Onboard switch
Onboard LCD controller
HUAWEI TECHNOLOGIES CO., LTD.
Onboard LCD controller
Huawei Confidential
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Huawei Enterprise A Better Way
Solution Features and Advantages
High speed and
large bandwidth
•Fast
and lossless
High reliability
and interference
resistance
between trackside
•9-level
QoS guarantee
•Comprehensive
the number of devices
video, train control, and
technologies
•Share
dispatching services
•Multilevel
other systems
•Dedicated
•High
•Unique
160 km/h
•Space
Multi-service
convergence
devices is 1.2 km, reducing
handover
rate (> 50 Mbps) at
Easy to deploy
and maintain
frequency bands
ICIC and IRC
redundancy
•
Customer
Benefits
leaky cables with
Guarantees safe operations and improves passengers'
experience.
•
One network bears broadband services and improve
O&M efficiency.
•
HUAWEI TECHNOLOGIES CO., LTD.
bearing of
Value-added service (VAS) platform earns profits.
Huawei Confidential
Page 5