gren tech indoor coverage solutions

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GrenTech Indoor Coverage Solution

Copyright © Shenzhen Grentech Co., Ltd.


Focus On Indoor Coverage 1


• What is In-Building System? It’s a technology that via passive & active components to distribute

wireless signal with good quality to cover in-building where the signal is weak or a lot of complaint from subscriber.

• Why do we have to install IBS? To supply the better service for customer, whenever & wherever &

whatever can use mobile with high quality & non-dead zone wireless network. To win user’s confidence & faith.

• How to achieve higher-performance IBS?

Focus On Indoor Coverage


Users’ Behavior Investigation

Indoor work time of higher value users is more than 80%

DoCoMo forecasts, 20% indoor coverage will bring 80% profit

Focus On Indoor Coverage


Indoor Coverage Solutions 2

Where do we need it ?



Indoor Coverage Solutions Typical Indoor Coverage Scenes

Commercial Building Shopping Mall Sports Venues Hotel

Tunnel Airport Underground Parking Scenery Spots

Different indoor scenes need different indoor coverage solutions

Commercial Building Shopping Mall Sports Venues Hotel

Tunnel Airport


Indoor Coverage Solutions

Typical Indoor Coverage Solutions

Repeater + Indoor Distribution System

Base station + Indoor Distribution System

UW-DDS + Indoor Distribution System UW-DDS : Ultra Wideband Digital Distribution System



Repeater + Indoor Distribution System Easy to deploy, Low cost

Improve call quality and reduce call drop rate

Suitable for small Building or Office

BTSPower splitter

Donor Antenna

RepeaterService Antenna

Coupler



Base Station + Indoor Distribution System Couple signal from BTS directly, High cost and complicated

Improve call quality and reduce call drop rate

Suitable for medium-sized Building BTS

Trunk Amplifier

Coupler

Power splitter

Service Antenna



UW-DDS + Indoor Distribution System

Multi-system(8 Max.)

GSM+DCS+WCDMA+WIFI

+LTE+TETRA

Low interference

Digital interference reducing

Suitable for large and complicated buildings

Skyscraper or Airport or Villatic area



Indoor Coverage Auxiliary Device

Repeater & Trunk Amplifier Feeder & Fiber Optic & Cat 5

Coupler & Multi-System Combiner Indoor & Camouflage Antenna


Indonesia Pakuwon Trade Centre

Typical Case I 3



13

Project Background

Building Floor Floor Description Floor Area (㎡)

PTC Basement Parking Area 18400

PTC LG Shopping Centre & Matahari 28500

PTC GF Shopping Centre & Matahari 28500

PTC UG Shopping Centre 21700

PTC 1ST Shopping Centre and Food Counter 28500

CITY WALK 1 Shopping Centre 5000

Total 130,600


Project Background

Pakuwon Trade Centre (PTC)

PTC(Pakuwon Trade Centre) is a large shopping mall which consists of Lower Ground, Ground Floor, Upper Ground, 1st floor and basement. It includes cinema, restaurants, entertainments, supermarket and so on.

Vertical Construction and Coverage Diagram


Design Principle

System Sketch Diagram


Test Result

Items KPI Result

GSM

Rx Level >-85dBm @ 95% Committed Coverage Area 98.67%

Rx Qual >=4 @ 95% Committed Coverage Area 100%

Handover Success Rate >99% @ 95% Committed Coverage Area 100%

Spillage Test > -90dBm @ 10m out of building -98.76dBm

WCDMA

RSCP >-85dBm @ 95% Committed Coverage Area 99.82%

Ec/Io >-12dBm @ 98% Committed Coverage Area 100%

Handover Success Rate >98% @ 95% Committed Coverage Area 100%

Drop Call Rate <=2% 0%

CSSR Rate >99% @ 95% Committed Coverage Area 100%

Walk Test Result


Test Result

2G Walk Test Result –- – LG-RxLev


Test Result

3G Walk Test Result –- – 1F-RSCP


National Centre for the Performing Arts

Typical Case II 4



Project Background

National Centre for the Performing Arts (NCPA)

NCPA is composed of main building, underwater promenade, underground parking, artificial lake, green space, total construction area are about 217,500 ㎡.There are 3 Floors underground, about 30m depth, and 5 Floors upper ground, 40m height.

GSM

WCDMA

China Unicom GSM

DCS

China Mobile

CDMA

TETRA

China Teleco

m


System Reform Adopted the new generation of high performance indoor distribution system: UW-DDS(Ultra Wideband Digital Distribution System)

Problems Analysis and Solutions


System Reform

UW-DDS is composed of MSAP,OSU & ORU.

Problems Analysis and Solutions

•RF board slot:4 •Switchboard slot:2,support 6 optical ports,4 optical ports/FE ports(SFP) •WLAN maximum access bandwidth:4Gbps •Maximum input power:10dbm

MSAP-Multi Service Access Platform

•Optical ports:11 •FE/GE ports:8 •Maximum hops of single fiber:11

OSU-Optical Switch Unit

•RF output ports: 1/2（N type）

•Maximum output power of each port:50mw 200mw 500mw

•Power supply: AC220V/50Hz,support POE and DC-48V

ORU-Optical Radio Unit


Performance Comparison

China Unicom GSM DT Data Contrast

-79.89 -75.26 -75.37

-57.42 -55.97 -65.55

-100

-80

-60

-40

-20

0 3FLOOR 4FLOOR 5FLOOR

RxSubLev(before reform) RxSubLev(after reform)

1.94

2.98

4.05

1.71 1.18 0.01

0

1

2

3

4

5

3FLOOR 4FLOOR 5FLOOR

RxSubQual(before reform) RxSubQual(after reform)

1.56 3.52

9.76

0.45 0.15 0.02 0

2

4

6

8

10

12


FER(before reform) FER(after reform)


China Unicom WCDMA DT Data Contrast


-82.24 -76.77 -80.35 -72.29

-65.5 -65.87

-100

-80

-60

-40

-20


RSCP(before reform) RSCP(after reform)

-7.03 -7.2 -8.28

-4.4 -4.51 -4.13

-10

-8

-6

-4

-2


EC/IO(before reform) EC/IO(after reform)

-7.54 -2.4

-8.21

-20.89 -22.23 -22.75

-25

-20

-15

-10

-5


TX_POWER(before reform) TX_POWER(after reform)

0.26

0

0.35

0.01 0.02 0.01 0

0.05 0.1

0.15 0.2

0.25 0.3

0.35 0.4


BLER(before reform) BLER(after reform)



Events Before After

Call Attempts 38 37

Call Connection Failure Times 5 0

Call Connection Times 34 37

Call Drops 0 0

Call Connection Success Rate (%) 89.50% 100%

Average Call setup Time(s) 3.03s 2.30s

RRC Connection Requests 38 37

RRC Connection Success Times 34 37

RRC Connection Success Rate (%) 89.50% 100%

Radio Connection Success Rate (%) 89.50% 100%

Handover Attempts Times 226 0

Handover Success Rate (%) 100% 100%

KPI Contrast:


Traffic Volume Contrast :

China Unicom GSM system traffic (the statistics of 5 days) increased from 85.19Erl to 177.831Erl,the increase rate is about 108.74%.


China Unicom 3G traffic (the statistics of 5 days) increased from 23.546Erl to 73.17Erl


Interference Contrast :


At Before the interference Band 3-5 always existed in China Unicom GSM system, which leaded to more than 6% Call Drop Rate, after replacing with UW-DDS,Interference Band 3-5 reduced to 10%.

In the original distribution system, bottom noise fluctuation was large in WCDMA system, after replacing with UW-DDS, bottom noise value was within 104dbm.


Beijing Olympic Venues

Shenyang Museum Guangzhou Baiyun Airport

Shanghai World Expo Tianjin Olympic Venues Shenzhen Subway

GrenTech Optimization Cases:

Other Optimization Cases

Thank You

国人通信 GRENTECH

gren tech indoor coverage solutions

Business

building system

ptc ug shopping centre

small building

wireless signal

good quality

drop rate suitable

low cost

high cost