Digital Fiber DAS

8/10/2019 Digital Fiber DAS

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Traditional IBS Disadvantage

Low Power Efficiency

Hard to Change Output Power

Hard to Control and Monitor

Hard to Change the Design

High Interference on BTS

Complex Network Structure
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Fiber DAS advantage

Fiber reach the floors instead of reaching the building, one equipment covers one floor, so the signal

source is closer to the antenna, and the loss in transmitting and distributing is low.

covering area is small and targeted. The power distributing is more average, no need to use any line-amplifier.

fiber RU adapt micro power design, so that reduce the dimension, power consumption and cost. Each fiber RU power can be adjusted separately. Fiber RU output power can be adjusted intelligently. Each RU can be monitored and controlled centrally and conveniently.


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Huaptec Fiber DAS Structure

Flexible DAS structure

Huaptec digital fiber DAS supports all three types, but multiple shunt type is recommended in

order to achieve the optimal system performance, which is very important to LTE data networks.

Huaptec multiple shunt type supports up to 500 remote units.

DigitalMU

RU10

RU20

RU30

RU10 RU11 RU12

DigitalMU

RU10 RU11 RU12

RU20 R U21 RU22

RU30 RU31 RU32

RU40 RU41 RU42


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MOU & EU

19 rack type, pluggable modules, convenient for

expansion and replacementSupport single or multiple operators with all mobilesystems of 2G, 3G and 4G including LTE MIMO 8 Fiber output ports Each MU has back up batteries, and MU itselfsupports back up

Local connection by Ethernet, USB with webinterface

Remote connection by Ethernet, GPRS, 3G or LTEmodem

Support SNMP

8 Fiber output ports, can be cascaded to have 3

layers of EU, support up to 500 pieces of remoteunits

Support loop back link and EU back up


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Model Supported System Power Level Typical Gain

Small Power Signal, Dual, Triple Systems 10dBm~20dBm 15~25dB

Medium

PowerSignal, Dual, Triple Systems 23dBm~33dBm 28~35dB

High Power Signal, Dual, Triple Systems 36dBm~43dBm 38~48dB

Remote Unit (RU)

Convert digital signals to RF and provide coverage RU reach the floors, so the signal source is closer to the antenna, and the

loss in transmitting and distributing is low. Fiber RU adapt micro power design, using multi-way power outputinstead of single-way power output, so it!s conducive to reduce theequipment dimension, power consumption and cost. each fiber RU power can be adjusted separately, it!s more efficient forcoverage and attract more traffic. each RU connect the EU or MU directly, so it!s easy to monitor andcontrol. support 1, 2, 3, 4 systems and multi bands. Support networkGSM850/EGSM/GSM900/GSM1800/PCS/CDMA850/CDMA1900/UMTS210

0 and LTE700, 1800/ 2.6G.four systems: 800+1900+AWS+LTE or 900+1800+2100+LTE protection and build-in testing

- 20DB!output power is adjustable, the range is 20 dB- ALC, remember the gain to ensure the system work steadily and avoid

interfering.- Limit the output power

International standards ETSI, 3GPP, 3GPP-LTE


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Huaptec Product Features

HuaptecDigital DAS

Features

Minimized noisefloor

Frequencymovable and

tunable

Loops Function Gain and poweradjustable

Backup power

supply


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Huaptec Features 1: Minimized noise floor


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Huaptec Features 2 : Backup power supply

Each MU or EU has two power modules inside, main power supply is mainly working to support the

whole unit, the back up power module is a hot standby; once main power module has failures, the back

up will work immediately to ensure the network performance. At the same time, power failure alarm will

be sent back immediately for further action

MU and first level EU must have power back up

The rest EU has optional power back up as per customer!s request

Back up power

module

Main power

module


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Huaptec Features 3: Movable and tunable

The whole fiber system can be configured easily through

software to support single or multiple sub bands ( I.E, one or

more operators), besides each band can be movable and

tunable

It will be conducted in Master unit, the connected EUs and RUs

will be updated automatically

Frequency movable and tunable function can be carried out by

both local connection and remote connection of GPRS, 3G data,

or SNMP


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Huaptec Features 4: Gain and power setting

In each Remote Unit, output power of each separate channel or sub band can be adjusted independently in order to

have a balance in the performance; and each separate channel or sub band can be shut off independently

It can be carried out by both local and remote connection

Operator 1, 2 and 3 have the same

output power level, therefore have

the similar coverage

Output powers of Operator 1 and

operator 3 have been reduced, while

operator 2 keeps the same in order to

have a coverage balance in certain

areas

Operator 3 have been switched off in

certain areas since the signals are

already strong, or shut off temporarily

to analyze


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Huaptec Features 5: Loops

EU and RU can form loops so that the fiber Link will also have back ups, therefore when one link fails, the other link

will start to work to support the RUs in the loop

Example

1. Fiber link 1 to connect with RU1, then RU2, RU3 and RU4.

2. Then Fiber link 2 to connect with RU4, then back to connect with RU3, RU2 and RU1.

Then when RU2 has problem, Fiber link 1 to RU3 and RU4 breaks

However Fiber link 2 will start to work to support RU,4 RU3

Shortcoming: Once loop is applied, the quantity of RUs will be less since the loop link will occupy additional EU ports.

Loops

Fiber Link 1

Fiber Link 2


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1. Existing network optimization

2. LTE MIMO

3. Dead spots & extended coverage

4. BTS substitution

5. Narrow strip coverage

6. Instantaneous high traffic area

Huaptec Fiber DAS Applications

Railway

Schools

houses

High way

Church

High buildings

Hospital

Villa

Odeum


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App. 2 LTE MIMO Independent deployment

LTE MIMO is fully

deployed independently,this is quick, and no

need to consider too

much about revising

existing network


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App. 3 Dead spots or extended coverage

1. Dead spots

2. Areas that cells can cover due to long distance

It will be more cost effective than using cells to solver the coverage and capacity.

Remark: For those newly setup stations, if Fiber DAS is within its 1KM distance,

the time delay must be less than 4 TA


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1: Substitution of those newly setup or removal stations Rent has been growing very quickly recently and people don!t like station

setup anymore, so it is quite difficult to find sites, or move them, or even if it can, it takes quite long time and high cost to do so, which is a

big conflict for network deployments, improve network quality or solve complaints.

Fiber DAS has quite compact design, suitable for both indoor and outdoor areas and won!t need special rooms, thus it is quite easy to f ind

sites , quite easy and quick to deploy, and no future maintenance

App. 4 BTS Substitution

2. Network Optimization of residential districts Residential districts have two problems

1) The districts get many signals from different cells, there are pollution and frequency handover, and high call drop rate

2) Commercial districts ask for more and more capacity than its original design as time goes on

The solution is to use fiber DAS to bring new carriers, added to the existing cells, to these districts. It is quicker, easier and more cost

effective. And for those residential areas where people are sensitive to RF radiation, camouflaged antennas (road lights, billboards, etc)

can be used without people!s notice.


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Coverage of High ways, railways, bridges, valleys and rivers

Multiple series type is quite suitable for these areas and capacity of one sector would be enough asthere are no high traffic demand in these areas, since all signals are coming from one sector, thus

there would be constant coverage without handovers.

1) Multiple series type reduce tremendously the fiber usage

2) Automatic time delay adjustment

3) Uplink diversity further increases Uplink anti-fading characteristics (Optional)

App. 5 Coverage of narrow strip


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Add more carriers by configuring the software to increase network efficiency in those areas that need

Instantaneous high traffic

Transfer temporarily resources from surrounding idle cells to areas that requests high traffics; or bring

the newly added carriers from the existing cells to specific hotspot areas to form a micro cell.

App. 6 Instantaneous high traffic area


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Huaptec NMS for Fiber DAS

Ethernet connection:

IP address with web interface

Ethernet

Web interface

Support

SNMP Ver. 1

SNMP Ver. 2

GPRS / 3G / LTE ModemUSB

All active components show

topologically, if one component has

alarm, its color turns red and if it is

touched by cursor, its brief

information pops up

Click ICON of MU, EU or RU, right

interface pops up to show alarms,

monitoring and configuring specs


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Huaptec OMT

Features:

1. OMT software for local and remote

monitoring control

2. Installation free version

3. Terminal software to control around 100 repeaters

4. Support SMS and GPRS communication

Description:

OMT carries comprehensive functions:

1) Users and passwords can be assigned for security and

classified

rights for different users

2) Alarms, monitoring and control are all available with this

software

3) Support SMS and GPRS communication

4) Support polling function that's usually with complicated OMC

system

5) Able to control and monitor over 50 sets of repeaters. and with

the help of good performance Modem, it would be able to

support

over 150 sets of repeaters


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Huaptec OMC

Features:

1. Monitor and control over 3000sets of

different types of Repeaters

2. Based on SQL2000 server, SQL2005, My SQL

3. Web interface

4. Support SMS, GPRS, TCP/IP, GSM data

5. Support polling system

OMC carries comprehensive functions:

OMC 2.1 (Operation and maintenance center) enables you to remotely operate and maintain Huaptec repeaters

easily and effectively by simply logging in the web interface, anywhere, any time, as long as there is internet or

mobile with internet services.

OMC 2.1 is based on SQL Server 2000 data base, capable of controlling & monitoring over 3000 repeaters nation

wide, its powerful resource tree management mode enables easy and quick management of every repeater!s

working status, its main functions include monitoring, alarms, configuration, polling and repeater management.

Additional functions include security management, system management, and log management, etc.

It supports different network structure, like Modems, TCP/IP, etc, TCP/IP is recommended.

OMC can be connected with its upper level software through SNMP.

Documents

Digital Fiber DAS