Application Analysis on TD-LTE Train-to-ground

Wireless Telecommunications

Zhengzhou Metro Co., Ltd. Zhengzhou Rail Transit Design and Research Institute Co., Ltd.

Huawei Technologies Co., Ltd. Beijing Urban Engineering Design & Research Institute Co., Ltd.

Contents

Acknowledgements 1

Requirements 2

Technology Selection 3

System Solution 4

Goals and Achievements

5

Application Value Promotion

6

1 Acknowledgements

1.1 Provincial and municipal governments

1.2 Companies participating in the project construction

1.3 Institutions contributing to related scientific achievements

1 Acknowledgements

Department of Industry in Henan Province Henan Radio Management Committee

Zhengzhou Metro Co., Ltd.

Zhengzhou Rail Transit Design and Research Institute Co., Ltd.

Beijing Urban Engineering Design & Research Institute Co., Ltd.

Huawei Technologies Co., Ltd.

China Railway Electrification Bureau Group Co., Ltd.

Shenzhen GrenTech Co., Ltd

Andrew Telecommunications (China) Co., Ltd.

2 Requirements

2.1 Information Required for Train-to-ground

Wireless Communications

2.2 Analysis on Requirements for Train-to-ground

Wireless Telecommunications

2.3 Technology Requirements on Train-to-ground Wireless

Communications

2.1 Information Required for Train-to-ground Wireless Communications

• Cab image

• Vehicle detection information

• Overhead contact line system monitoring information

• Vehicle-mounted FAS

Data information

• TETRA dispatching information

• Radio network information of operators Voice information

• Carriage image information

• Passenger information collection Security information

• PIS multimedia information

• Vehicle-mounted broadcast information Service information

• CBTC information Control information

2.2 Analysis on Requirements for Train-to-ground Wireless Telecommunications

Carri

age

imag

e

Uplo

ad

HD

imag

e in

real

time

PIS

infor

matio

n

Play

in

real

time

Vehic

le-

moun

ted

radio

Broa

dcast

in a

centr

alized

mann

er

Vehi

cle-

moun

ted

FAS

infor

matio

n

Uplo

ad in

real

time

Wirel

ess

dispat

ching

infor

matio

n

voice

C

B

T

C

infor

mati

on

Use

AP

to

trans

port

signa

ls

Vehi

cle

detec

tion

infor

matio

n

Uplo

ad in

real

time

Coll

ecti

on

of

pass

eng

er

info

rmat

ion

Upl

oad

in

real

time

Cab

imag

e

Uplo

ad

HD

imag

e in

real

time

Ima

ge

infor

mati

on in

the

acce

ss

netw

ork

Uplo

ad

Othe

r

infor

mati

on

R

ec

or

d

an

d

pl

ay

N

o

n-

re

al

ti

m

e

S

D

N

o

n-

re

al

ti

m

e

S

D

R

ea

l

ti

m

e

T

E

T

R

A

In

te

gr

ati

on

of

re

al-

ti

m

e

tra

ns

mi

ssi

on

T

E

T

R

A

In

te

gr

ati

on

of

re

al-

ti

m

e

tra

ns

mi

ssi

on

In

te

gr

ati

on

of

re

al-

ti

m

e

tra

ns

mi

ssi

on

In

te

gr

ati

on

of

re

al-

ti

m

e

tra

ns

mi

ssi

on

In

te

gr

ati

on

of

re

al-

ti

m

e

tra

ns

mi

ssi

on

2.3 Technology Requirements on Train-to-ground Wireless Communications

High-speed mobility

Large bandwidth

Implementation

Advanced

System standardization

Extensibility

Compatibility

3 Technology Selection

3.1 Feasibility of TD-LTE

3.2 TD-LTE Selection

3.3 Project Implementation Process

3.1 Feasibility of TD-LTE

Combination of mobility and large bandwidth

Improvement of industrial chain

Main strain 4G technology in China and the world

Extensibility

Interoperability and interface standardization

3.2 TD-LTE Selection Process

Communication

Review

In 2010, experts exchanged opinions on 802.11WLAN, 802.16WiMAX,

RailView, TD-LTE, DVB-T, MESH and other technologies on wireless

telecommunications.

During October to November in 2010, the research on companies

developing wireless communication technologies was carried out.

Research

In March 2011, Zhengzhou Rail Transport Wireless Telecommunications

Expert Consultation was held.

3.3 Project Implementation Process

Frequency allocation

• In August 2011, the Department of Industry And Wireless Bureau of Zhengzhou Province approved Zhengzhou Metro Co., Ltd. to use the frequencies from 1795 MHz to 1805 MHz.

Solution selection

• From 2011 to 2012, the design institute determined detailed technical solutions.

Tender

• In 2012, tenders for commercial telecommunications equipment, train, and PIS equipment used in train and ground, as well as TD-LTE equipment were complete.

Installation and

commissioning

• In 2013, equipment for TD-LTE is installed in Metro line 1 in Zhengzhou.

4 System Solution

4.1 Station Scheme

4.2 Interval Scheme

4.3 Vehicle Scheme

4.4 Depot and Parking Solution

4.5 Implementation and Planning

Scheme

4.1 Station Scheme

RRU Secondary

Combiner

Secondary combiner

Signals cover only

station and rail line

areas.

Station Scheme

System Solutions

Core network

BBU

RRU

Secondary Combiner

Shared commercial leaky

cable

TAU

4.2 Interval Scheme

• Secondary Combiner to relay commercial wireless signals BBU+RRU

RRU Secondary

Combiner

4.3 Vehicle Scheme

TAU+TAU

TAU

Equipment cabinet in the cab

4.4 Depot and Parking Scheme

Engineering

RRU

Indoor

antenna

BBU

Depot room Depot-use garage Depot-use garage

4.5 Implementation and Planning Scheme

5 Goals and Achievements

5.1 Platform Construction

5.2 Service Bearing

5.3 Available Achievements and Future Research

5.1 Platform Construction

TD-

LTE

train-

to-

ground

transpo

rt

platfor

m

5.2 Service Bearing

TD-LTE

Monitored

image informat

ion ……

Overhead Contact line

system inspection

Passenger information collection

Wireless commissioni

ng information in vehicle CBTC

information

Vehicle detection informati

on

Vehicle-mounted FAS

Vehicle-mounted broadcast

Video informat

ion

5.3 Available Achievements and Future Research

Transmission channel for TD-LTE train-to-ground wireless telecommunications

Center

PIS

Center

Video

Surveill

ance

Center

FAS

Vehicle-

mounte

d FAS

Vehicle

PIS

Vehicle-

mounted

video

CBTC

Informa

tion

Vehicle

detectio

n

informa

tion

Vehicle-

mounte

d

TETRA

Passenger

information

collection

CBTC

informa

tion

Vehicle

mainten

ance

center

Center

TETRA

Technol

ogy

detectio

n

systems

in

branche

s

………

………

Core

netwo

rk of

operat

or

User

equipment

6 Application Value

Promotion

6 Application Value Promotion

Comply with national requirements for strategic development of the technology, such as the issue of 4G licenses and the "National Development and Reform Commission on the organization and implementation of the fourth-generation TD-LTE mobile communications industry specific notice" (Office of High-Tech Development and Reform [2013] No. 2330

Standardize the radio frequencies for rail transport

Standardize terminal equipment in integrated platform

Integrate rail transports and reduce construction costs

Simplify equipment and lines in rail line areas and reduce maintenance costs

The Promotion of the E LTE technology has large value and significance.

Thank You