gren tech outdoor coverage solutions

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GrenTech Outdoor Coverage Solution

Copyright © Shenzhen Grentech Co., Ltd.

OUTDOOR COVERAGE SOLUTION

Importance of Outdoor / Rural Coverage


1: Large and open Area

2: Population density small

3: Single area traffic( Erl ) is low

4: Power supply is difficult

5: People need communication

With modern communication

device

Rural area’s Situation

1: BTS and civil work cost

2: Transmission cost

3: Power consumption cost

4: Construction time is long

5: Investment return slow and low

6: Operators need expansion of

there Service and market

Operators’ Consideration


HOW


1、Outdoor Repeater Solutions

2、MCPA (Multi-Carrier Power Amplifier)

3、Digital Optical Fiber Multi-band RRU


How to make “?” To “!”


OUTDOOR REPEATER SOLUTIONS 1.1 RF Outdoor Repeater Solutions

The output power of repeater is: 10W(40dBm), 20W(43dBm)


OUTDOOR REPEATER SOLUTIONS

In order to avoid self oscillation, Must

ensure isolation between donor and

service antenna have a safe distance.


OUTDOOR REPEATER SOLUTIONS 1.2 ICS (Interference Cancellation System) Outdoor Repeater


OUTDOOR REPEATER SOLUTIONS ICS Repeater can solve isolation problem, can be easily installed and commissioning. Output power :10w(40dBm);20w(43dBm)



1.3 Optical Fiber Outdoor Repeater Solutions

The output power of repeater is: 10W(40dBm), 20W(43dBm)

RU

MU

Fiber



BS Coupler

Attenuation

Master unit

Remote unit

Optical Fiber Repeater running stably,signal transmission from MU to RU can reach 20 KM. Output power :10w(40dBm);20w(43dBm)


MCPA SOLUTION 2. MCPA

What do we face ?

Problem one:

With the rapid development of the network, the original network coverage shrinks because of the large-scale network expansion and upgrade, so it is a challenge how to keep the original coverage faster and low-costs

Problem two:

It is hard to extend BTS coverage in some rural and mountainous area where has no right conditions to build more BTS


MCPA SOLUTION

Traditional solution


MCPA SOLUTION

Our Solution

BTS Combiner + MCPA


MCPA SOLUTION

Extend the downlink coverage Improve the balance of link


MCPA SOLUTION

MCPA

BTS

Antenna MCPA

BTS

BTS room

Antenna

BTS room

Indoor type Outdoor type


Depth coverage for dense urban area

MCPA SOLUTION

Blind zone Hard to set new BTS Long construction period

Extend BTS coverage Beautify the urban environment Rapid deployment


High way and railway coverage

MCPA SOLUTION

Ribbon zone coverage ,special on road and railway where user is at a high speed call, and requirements for the network coverage and call quality are higher

Extend the BTS coverage Reduce the drop line Reduce the BTS signal switch Improve call quality


Coastal and inland waterway

MCPA SOLUTION

Poor environment Irregular Panhandle High signal loss

Extend BTS coverage Reduce investment Emergency use


Village and township

MCPA SOLUTION

Low BTS efficiency less coverage hard to build new BTS

Extend BTS coverage Reduce investment High Performance-to-Price Ratio


Digital optical system

Common Public Radio Interface

Digital Optical Fiber Multi-band RRU

• One system support GSM+DCS+WCDMA

• Output Power 60W

• Support CPRI protocol optical transmission standard

• One master unit can support many slaver unit

• Support Ring/link/star/daisy-chain network topology

• Support long distance transmission about 20Km

3. Digital Optical Fiber Multi-band RRU

http://www.cpri.info/�


Time slot map off noise suppression

Time slot map on noise suppression

DSP Key function: 1. Interference control 2. Noise control


DSP( Digital Signal Processing) - Floor noise suppression


MU send time testing data to the RU and RU test time delay and adjust it less than 15us in overlap coverage between the two remote units

Digital Optical Fiber Multi-band RRU Time delay adjust function


Digital Optical Fiber Multi-band RRU Flexible Network Topology


• Replace part of BTS

• High building indoor coverage

• Railway or high way coverage

• BTS channel resource distribution

Digital Optical Fiber Multi-band RRU Digital Optical Fiber RRU Outdoor solution


There are six tunnels in this 15km section of the Chongqing-Zunyi Railway nearby The Gaokan BTS, the tunnels are almost non-covered, So we designed a special system with GrenTech Digital Optic Fiber RRU to cover the Tunnels in this railway section.

Digital Optical Fiber Multi-band RRU ChongQing-Zunyi Railway Tunnels Coverage Solution


System Sketch Map



Indonesia Project


Indonesia Project

RU optical fiber box

BTS Hotel MU connection

BTS Hotel MU 3 Sectors

Thank You

国人通信 GRENTECH

gren tech outdoor coverage solutions

Business

bts coverage

rf outdoor repeater

original coverage

output power of repeater

depth coverage

downlink coverage

original network coverage

bts signa