guidelines no 009/gl/std-qos/ict/rura/020 of 29/05/2020 … · 2020. 7. 18. · 2.1 design...

P.O BOX 7289 KIGALI, Tel: +250 252 584562, Fax: +250 252 584563

Email: [email protected]

Website: www.rura.rw

GUIDELINES No 009/GL/STD-QOS/ICT/RURA/020 OF 29/05/2020 ON

REQUIREMENTS FOR INDOOR BUILDING SOLUTION -

DISTRIBUTED ANTENNAS SYSTEM INSTALLATION

29th May 2020

mailto:[email protected]

http://www.rura.rw/

1 | P a g e Guidelines on Requirements for Indoor Building Solution - Distributed Antennas System Installation (IBS-DAS) Rwanda Utilities Regulatory Authority (RURA)

TABLE OF CONTENTS

ABBREVIATION AND ACRONYMS .................................................................................... 3

0 INTRODUCTION ................................................................................................... 5

1 GENERAL PROVISIONS ...................................................................................... 6

1.1 Purpose .................................................................................................................... 6

1.2 Definition ................................................................................................................. 6

1.3 Scope of Application ............................................................................................... 7

2 DESIGN AND INSTALLATION ........................................................................... 8

2.1 Design considerations .............................................................................................. 8

2.2 Building Layout ....................................................................................................... 8

2.3 Communication Room (CR) .................................................................................... 9

2.3.1 Communication Room Location ............................................................................. 9

2.3.2 Communication Room (CR) size and Load ............................................................ 9

2.3.3 Communications Room Risers or Pathways ......................................................... 10

2.3.4 Communication Room (CR) Prerequisites ............................................................ 11

2.4 Equipment required in the Communication Room ................................................ 14

2.5 Transmission backhaul requirement ...................................................................... 16

2.5.1 Microwave transmission ........................................................................................ 16

2.5.2 Fibre Optic Backhaul System ................................................................................ 16

2.6 Antenna Type, location and Distribution .............................................................. 17

2.6.1 Antenna type .......................................................................................................... 17

2.6.2 Antenna location .................................................................................................... 17

2.6.3 Antenna Distribution ............................................................................................. 17

2.7 Effective Isotropic Radiated Power (EIRP)of each antenna. ................................ 18

2.8 Number of Licensed Mobile Network Operators and technologies ...................... 18

3 PUBLIC EXPOSURE TO THE ELECTROMAGNETIC RADIATION (EMR). 19

4 SERVICE LEVEL AGREEMENT (SLA) BETWEEN THE BUILDING

OWNER/ MANAGER AND MNOs/SPs .............................................................. 20

5 PROCEDURES TO OBTAIN INSTALLATION PERMIT FOR IBS - DAS

INSTALLATION .................................................................................................. 21

5.1 Construction Permit Issuance ................................................................................ 21

5.2 Installation of IBS – DAS ...................................................................................... 21

5.3 Occupation Permit Issuance .................................................................................. 21

6 FINAL PROVISIONS ........................................................................................... 22


6.1 Transitional period ................................................................................................. 22

6.2 Commencement ..................................................................................................... 22

ANNEX A: DISTRIBUTED ANTENNA SYSTEM DIAGRAM .......................................... 23

ANNEX B: TYPE OF EQUIPMENT REQUIRED FOR DAS INSTALLATION ................ 25

ANNEX C: STANDARDS USED IN THIS GUIDELINES .................................................. 28

ANNEX D: ICNIRP REFERENCE LEVELS FOR PUBLIC EXPOSURE (ICNIRP, 1998) 29

ANNEX E: TYPE OF WARNING SIGN ............................................................................... 30

ANNEX F: IBS - DAS COMMITMENT FORM ................................................................... 31


ABBREVIATION AND ACRONYMS

AC: Alternative Current

ACPDB: Alternative Current Power Distribution Box

AVR: Automatic Voltage Regulator

CoK: City of Kigali

C/I: Carrier to Interference ration

BTS: Base Transceiver Station

BM: Building Manager

BBU: Baseband Unit

DAS: Distributed Antenna System

DB: Distribution Box for an electrical system

DC: Direct Current

DCDB: Direct Current Distribution Box

DUG: Digital Unit for GSM

DUL: Digital Unit for LTE

DUW: Digital Unit for WCDMA

CR: Communication Room

EIRP: Effective Isotropic Radiated Power

EMR: Electromagnetic Radiation

EMF: Electromagnetic Field

eNode-B: Base Station for LTE

ETSI: European Telecommunications Standards Institute

GSM: Global System for Mobile Communications

IBS: In building Solution

LOS: Line of Sight

LTE: Long-Term Evolution

MCB: Main Circuit Breaker

MININFRA: Ministry of Infrastructure


MNO: Mobile Network Operator

MW: Microwave

Node-B: base station in UMTS

ODF: Optical Distribution Frame

PDB: Power Distribution Box

PDU: Power Distribution Unit

RBS: Radio Base Station

RF: Radio Frequency

RHA: Rwanda Housing Authority

RRU: Remote Radio Unit

RSSI: Received signal strength indication

RURA: Rwanda Utilities Regulatory Authority

SP: Services Provider

SON: Sodium Vapor Lamps

SSO: Switch Socket Outlet

UMTS: Universal Mobile Telecommunications System

VSWR: Voltage Standing Wave Ratio


0 INTRODUCTION

Today in Rwanda, the availability and quality of wireless voice and data communication

services are paramount and catered for in outdoor coverage. Meanwhile when it comes to inside

buildings especially in complexes like shopping malls, a multi floors administrative or

commercial Buildings etc. the quality and availability are degraded due to the shielding effect

of the building’s front and structure on radio signals. Therefore, additional technical measures

are indispensable to overcome the issue above.

The Distribution Antennas System (DAS) present a viable solution to solve the above concerns

by providing the internal coverage within any building.


1 GENERAL PROVISIONS

1.1 Purpose

These guidelines outline the minimum technical specification and requirements that should be

followed when installing Distributed Antenna System (DAS) as solution to provide coverage

and capacity in buildings. They outline also the procedural for acquiring permission to install

DAS infrastructure in buildings.

1.2 Definition

In these guidelines, the terms hereunder should have the following meaning:

a. Passive Infrastructure refer to all equipment except Radio Equipment (BS and RU)

b. Active Infrastructure refer to Radio Equipment (BS and RU)

c. Building refer to:

1. A three-storeyed and above with or without basements accommodating not

more than five hundred (500) people

2. Sports and leisure facilities, social, cultural, Hospitalities, industrial, memorial,

educational buildings, health facilities, or other buildings that accommodate

more than five hundred (500) people;

3. Any other building category that should be deemed necessary by Competent

authority

d. Existing Building refer to a building already constructed and in use.

e. New Building refer to building already constructed and ready to be used.

f. Under construction Building refer to a building in construction and not yet finished.

g. Planned Building refer to a building planned to be constructed.

h. Closed space refers to a space covered with wall at three over five considering four

walls and the roof

i. Open space refers to a space not covered at all or covered up to one five considering

four walls and the roof

j. Centralized Radio Unit (RU) concept refers to the placement of all RU together with

the BS

k. Distributed Radio Unit refers to a concept of disseminating RU in locations different

from BS.

l. Regulator refer to Rwanda Utilities Regulatory Authority


1.3 Scope of Application

These guidelines should be applied to:

a. Existing, New, Under construction or Planned Buildings

b. Any other building requiring coverage improvement noticed by Mobile Networks

Operators or the regulator.


2 DESIGN AND INSTALLATION

2.1 Design considerations

The types of DAS for mobile services which should be considered are:

a. Passive concept: passive DAS concept distributes RF signal from radio equipment

(BS and RU) to antennas inside a building using coaxial cable and passive

components.

b. Active concept: In Active DAS concept, RF signal are distributed from radio

equipment (BS and RU) to antennas inside a building by using extensive amount

of fibre optics and active modules that converts the optical signals back into RF

signals after long distribution runs.

c. Hybrid concept: The Hybrid Concept, is the combination of the Passive concept

and active concept. the Hybrid concept is used to cater for multi user and traffic

demands in a building area.

When designing an IBS - DAS, the following should be considered:

a. Building Layout;

b. The communication Room design and location

c. Transmission backhaul requirement

d. Antenna Type, location and Distribution

e. EIRP (Effective Isotropic Radiated Power) of each antenna

f. Number of Licensed Mobile Network Operators and technologies

2.2 Building Layout

A detailed RF survey report for each floor of the Building should be availed. The report

should include the following:

a. For the existing Building

i. The signal strength (RSSI, C/I, RxLev, etc.)

b. Planned and under construction Building

i. Simulation and prediction of the signal strength (RSSI, C/I, RxLev, etc.)

The above report should take into consideration:

a. The estimated number of subscribers per floor or per the building architectural

division


b. The intended use of each specific area.

When conducting RF Building survey, parameters set in regulation into force Governing the

Quality of Service of Cellular Mobile Networks Services should be considered

2.3 Communication Room (CR)

The CR consist of a closed or open space within the Building used as a common access point

for cabling subsystems and building pathways.

2.3.1 Communication Room Location

The Communication Room should:

a. be accessible for delivery of large equipment and easy maintenance.

b. be located in a dry area not subject to flooding and as close as possible to the building

entrance point or as close as possible to the center of the area served

c. be interconnected with all floor/ wings of the building through a minimum of 8 cm

inner diameter conduit or equivalent pathway.

a. be located away from sources of electromagnetic interference (transformers, motors, x-

ray, induction heaters, arc welders, radio and radar) unless interference is less than 3

V/m across the frequency spectrum.

b. be dedicated to the telecommunications function and should not be shared with

electrical installations other than those used for telecommunications or related

equipment.

c. Be located in area that are not restricted by building components that limit expansion

such as elevators, core, outside walls or other fixed building walls.

2.3.2 Communication Room (CR) size and Load

The communication Room size and load should be designed as follows.

a. The height between the finished floor and the lowest point of the ceiling should be a

minimum of 3 m to accommodate taller frames and overhead pathways

b. Floor loading should be sufficient to bear all the installed loads in the building and a

structural engineer consulted to do the design

c. There should be accessibility for delivery of large equipment. A minimum of one wall

should be covered with 19 mm plywood covered with two coats of fire-retardant paint

d. The minimum room size catering 4 operators should be 72 square meter which is 6

meter large, 12-meter-long (5l x 12 L) m

e. The minimum size required for wall mounted RUs, combiners, splitter space should be

12 square meter which is 2-meter height and 5-meter-long (2H x 6 L) m


f. The door should be a minimum of 0.9 m wide and 2 m high with no doorsill, hinged to

open outward. The door should be fitted with a lock. A double door 1.8m wide by 2.3

m high is recommended if large equipment delivery is anticipated.

g. Communications cabinets should be placed in a manner that will allow a minimum of

1 meter

clearance from the front and rear mounting surfaces of each cabinet

h. Sufficient space should be allocated for future expansion of communication equipment

or for new service providers. The BM should discuss with the MNOs/SPs for sites

which require larger installations.

2.3.3 Communications Room Risers or Pathways

The communication Risers or pathways are spaces used for the provider’s transmission,

reception and support equipment, they consist of Areas Above Ceilings, Access Floor Systems,

Cable Support Systems, Underfloor Duct Systems, Cellular Floor, Perimeter Raceways or

Utility Columns.

Below are minimum requirement of the communication Risers or Pathways.

a. A single, straight vertical CR riser should run through the edge of every floor or

wings of the building from the lowest to the highest with a minimum of 8 cm inner

diameter

b. CR Risers should be sized to accommodate the quantity of communications cables to

be installed on construction completion, plus a minimum of 60% spare capacity.

c. Risers should be open to the communications room or open via doors or panels onto a

public space if there is no communications room on that floor

d. The minimum dimensions for CR risers should be internal and free of columns, ducts

or other intrusions into the space

e. The communication riser or pathway should:

i. not be located in elevator shafts,

ii. be installed in “dry” locations that protect the cables from moisture levels that

are beyond the normal operating range of indoor premises cable.

Beside the above, Firestop should be used or maintained for all penetrations of cable, wires and

pathways.


2.3.4 Communication Room (CR) Prerequisites

The CR intended to accommodate IBC/DAS equipment should have the following.

2.3.4.1 Cable Tray and Cable Runway

a. The maximum depth of any cable tray should be 150 mm and should be filled at 50

percent

b. Span cable support systems should be done in accordance with the manufacturer’s

recommended load capacity

c. Noncontiguous pathway supports should be located at intervals not to exceed 1.5 m

d. Cable should not be laid directly on ceiling tiles or rails

2.3.4.2 Conduit, Cable Trucking, Cable ladders and cable supports

e. No section of conduit should be longer than 30 m between pull points. Pull boxes

should be placed in conduit runs of over 30 m and no section of conduit should have

more than two 90-degree bends

f. Depending on the building type and number of cable to be distributed, the size of

the cable trucking should be not less than 100 mm x 150 mm

g. The cellular services should make use of a separate cable tray from the fixed network

and broadcast services. The size of this tray depending on network architecture

should be between 150 m to 200 m

h. Cable ladders should be made of galvanized mild steel. Typical width of cable

ladders should be 150 mm or 200 mm.

i. For indoor applications, cable trays are required for all horizontal cabling runs and

should be coated or GI type.

j. Horizontal feeder runs above plaster ceilings should use hanging pathways with

adequate supports

k. With the exception of small jumper cables or pig-tails, no coaxial cables should be

allowed to rest on the false ceilings

2.3.4.3 Fire extinguisher

A handheld type fire extinguisher should be provided and wall mounted. It should have a

test label attached with the original date of issue marked on the manufacturer's name.


2.3.4.4 Security facility

All room doors if more than one equipment enclosure is utilized, the equipment enclosure

door should be provided with a reed relay switch door to monitor site access. The above

exercise should be under the BM responsibility.

2.3.4.5 Climate control system

a. This covers the cooling requirement of the equipment room only as outdoor

equipment comes with its own climate control system. The requirements for

temperature and humidity should be met in accordance with the environmental

specifications for the equipment. Equipment should in general comply to ETSI 300

019-1 standards.

2.3.4.6 Air-conditioning

a. The air-condition is mandatory in closed space.

b. The room should be equipped with 2 number of split air conditioners operating in

alternate mode of 6 hourly cycles.

c. The cooling capacity will depend among other things, on the amount and type of

equipment installed inside the room.

d. Target operating temperature is between 25 °C - 30 °C with relative humidity of 40 %

- 60 % and is specified mostly for the benefit of the backup battery optimum operating

range.

2.3.4.7 Forced air cooling

a. The forced air cooling is mandatory in closed space

b. To maximize the cooling system in the ER, a ventilation fan should be installed.

c. The ventilation fans should preferably be powered by the rectifier system through an

inverter for sustained operations during power outages.

d. To extend battery life the inverter should be installed with a reduced power option

whereby the extraction rate of the fans are reduced.

e. The fans should meet the minimum of the following requirements:

1. 300 mm diameter with a low profile of 150 mm in depth;

2. fan mounted on a suitable diaphragm plate with rubber vibration mounts;

3. Airflow rate of 2 000 m3/h at 30 Pa static pressure; and

4. power consumption approximately 100 W.


2.3.4.8 System of Wiring

The system of wiring is comprised of copper or PVC single insulated cables complied to

BS 6004. The cables should generally be installed within a conduit or trucking in a neat and

tidy manner.

Sizing of all electrical cables should take into account voltage drop, grouping, and

environmental conditions in accordance with Institute of Electrical Engineers (IEE) Wiring

Regulations (Ed. 17th)

2.3.4.9 Small power installations

Surface mounted twin SSO should be provided for test equipment and other maintenance

appliances. They should be located one on opposite corners of the equipment room and in riser

spaces at every floor where the telecommunication equipment installed.

2.3.4.10 Lighting

a. Lighting should be a minimum of 500 lux in the horizontal plane and 200 lux in the

vertical plane measured 1 m above the finished floor when occupied by personnel.

b. Emergency lighting and “Exit” signs should be also provided. The above lightings

should be powered from the rectifier system.

c. Switches for the control of light fittings should be provided at the entrance just inside

the room.

d. Perimeter lighting if desired as in the case of car park or rooftop installation with

outdoor equipment is of the flood light type using 200 W SON bulbs. Switches for

the control should be provided at the common DB.

2.3.4.11 Mechanical and Electrical (M&E) control and alarm signaling cables

a. A common distribution frame should be used to terminate all control and alarm

signaling cables for the site. Individual alarm termination junction boxes are not

allowed to avoid cluttering and untidy cabling in the room.

b. Alarm contacts should be voltage free and relays of the single-pole-double-throw

type, operated by - 48 V DC supplies.

2.3.4.12 Lightning surge protection system

a. The lighting surge protection should be installed in order to protect equipment

b. The supplier of the protection equipment should be able to provide full technical and

continuous engineering support in the event of any lightning, surge or grounding

problems.


Lightning surge protection devices have to be tested by accredited laboratories in accordance

to UL 1449 standard.

2.4 Equipment required in the Communication Room

The CR should comprise the following equipment:

A. Passive Equipment

i. The Main Power Distribution Box (PDB) for AC:

a The mains power distribution system should consist of an intake point located on the

floor of the room or mounted on the wall. This is a 3-phase metal clad type fitted

with 63 Amps MCB's.

b A circuit schedule should be affixed to the inside of the front cover of the Distribution

Board, neatly presented and enclosed within a clear plastic envelope. Labelling should

be provided to comply with Institute of Electrical Engineers (IEE) Wiring Regulations

(Ed. 17th).

ii. The Rectifier

a. The rectifier should be installed in order to help in converting the 220 AC power to -48

and 24 V DC Power

b. All MNOs should use one single Rectifier to supply power to the equipment cabinets

(BS) and Remote Radio Units (RUs) via DCDBs.

c. Since only one single rectifier should be installed on the site, all Actives equipment

should use or cater for the -48V DC and 24 V DC Power.

d. The rectifier should be installed and maintained by the building owner.

iii. The battery banks

a. The battery banks for backup should be installed and should have the capacity to last

for 12 hours until the main grip is up. The battery banks should be connected in such a

way that it starts automatically when the grid is down.

b. In order to use efficiently the space in the CR and keep its aesthetics, the rectifier and

battery Banks should be combined in one cabinet (Rack) and should be installed and

maintained by the building owner.

iv. The Power Distributed Unit (PDU) for DC (DCDB)

a. The PDU for DC should provide the -48 and 24V DC power and should be located in

DCDB.

b. The DCDB should have different size of CBs with a minimum of 63 Amps


c. Each MNO/SP equipment (BS cabinet and RUs) should be connected to its own DCDB

for easy maintenance

d. The PDU for DC should be a standalone box installed near the rectifier or the

MNOs/SPs cabinet (BS) for easy maintenance

e. For any installation different than the one outlined above, The Building Owner should

discuss with the MNOs for easing the installation of the sites.

f. The DCDB should be mounted on a pole or mounted on the wall.

v. Power Divider/ Combiner (Splitter) and Power Tapas

a. For easy sharing distribution, the Power Divider/Combiner and Power Taps should be

used to reach antennas on each floor.

b. The use of Power Divider/Combiner and Power Taps will depend on antennas

distributions within the building.

c. The Divider/combiner and Power Taps should cater for the frequency bands used for

2G, 3G, 4G LTE (700 Mhz, 800 Mhz, 900 Mhz, 1800Mhz and 2100 Mhz)

vi. Feeders and Fibres Optic Cable

a. The feeders should consist of coaxial cable used to link RU and Antennas. The

maximum length should be less than 90 m cable run

b. The coaxial cable consists of ½”,7/8”,11/4” inch feeders cable

c. The use of fibre optic should be recommended for efficiency use of the space when

linking BS cabinet and RU.

d. in order to cater for aesthetics of the place, cable tray should be used and may take the

same pathways as the existing or Planned for Local Area Network.

B. Active Equipment

i. Base Station

a. These are equipment, which will be located within cabinets in charge of distributing RF

signal to antennas disseminated within the building.

b. Its number will depend on number of technologies (2G, 3G, 4G-LTE) availed combined

to the number of MNOs in the building.

ii. Radio Unit (RU)

If centralized RU concept is privileged All RUs should be located in the CR, therefore

should be either wall mounted or pole mounted. In case all RRU are mounted on the

wall, a minimum of 10 sqm space will be required for 4 MNOs/SPs


2.5 Transmission backhaul requirement

Transmission backhaul should be inclusive of microwave transmission or fixed line

fibre Optic. The use of fibre optic backhaul system is recommended

2.5.1 Microwave transmission

a. Developer or building owner is required to allocate a minimum space of 1.5 m x 1.5 m

for standard 3 m floor mounted boom for each MNO/SP at the rooftop for the

installation of microwave antenna. It should be on a flat horizontal surface without any

obstructed view to other nearest sites (far-end). Size of microwave antenna is

determined by the distance to far-end.

b. The following minimum requirements should be followed:

1. The pole should be grounded to the existing building lightning ground using

exothermic welding or copper test bond.

2. The transmission cable from the microwave antenna to Indoor Units inside the

telecommunication room should be installed by the SP. The transmission cable

will run on a cable ladder or inside cable trunking to the nearest riser down to

equipment room.

c. Developer should provide a ladder (if required) to access the rooftop for the installation

of transmission structure and microwave antenna. It is also required for the purpose of

regular maintenance and inspection. Some sites may require walking platform for safety

during site installation and maintenance.

2.5.2 Fibre Optic Backhaul System

a. The fibre optic cable (FOC) should start from the manhole of MNO/SP nearby through

duct- way to the building. The fiber should be terminated in ODF within the Equipment

Room.

b. The requirement of fibre Optic for backhaul installation should be according to the

Guidelines for fiber optic cables underground installation in force


2.6 Antenna Type, location and Distribution

2.6.1 Antenna type

The type of Antenna should be:

a. Directional, be-directional or omni-directional Supporting all frequencies bands used

in Mobile Communication. those frequency bands are: 700 Mhz, 800 Mhz, 900 Mhz,

1800 Mhz, 2100 Mhz

The antenna should have the following specification:

- Gain 2-3 dBi

- Beam width 360o

- Polarized Vertical

- VSWR < 2

- MIMO or SISO depending on the demand

2.6.2 Antenna location

When fixing the antennas, the following should be considered:

a. Antennas especially Omni-directional antennas should be placed at centralized

locations while keeping in view the spillage of indoor signals and catering for the

aesthetics of the room.

b. Antennas should be placed at high elevations where people can’t touch them as it will

affect its performance

c. Antennas should be placed away from conductive objects.

d. Antenna should be fixed discreetly to reduce public concerns about EMF exposure.

2.6.3 Antenna Distribution

a. The antenna distribution should depend on the size of the floor in square meter and the

thickness of wall. Meanwhile the below rules should be catered for:

- Antenna should be spaced at 30 m apart

- Outside antennas should be placed at 6 m of the edge of building wall

- One antenna per floor within 6 m of the elevator core

- Star configuration

- stairwells

If open, Omni direction antenna every 6 floor,

If closed, Omni directional antenna every 2 floor


b. The antenna distribution should cater for Quality of service as per the regulation in

force Governing the Quality of Service of Cellular Mobile Networks Services.

2.7 Effective Isotropic Radiated Power (EIRP) of each antenna.

In order to cater for the EIRP of each antenna, Passive component (coupler, splitter and

attenuator losses) and feeder cable losses has to be subtracted from BTS output power. link

Budget calculations should be used to calculate the output power (dB)

For each frequency Band, the formula below should be used to the output power (dB)

EIRP= Pout BTS + Ga – Lf – Lc- Ls – La

Where,

Pout BTS= BTS output power at antenna connector; Ga= Antenna gain (dB)

Lf= Feeder loss; Lc= Coupler loss; Ls= Splitter loss; La= Attenuator loss

2.8 Number of Licensed Mobile Network Operators and technologies

When designing the IBS-DAS, the designer should cater for:

- The number of MNOs to be accommodated

- The number and Type of technologies to be used by the MNO (2G, 3G, 4G-LTE,

etc.)


3 PUBLIC EXPOSURE TO THE ELECTROMAGNETIC RADIATION (EMR)

a. The MNOs should comply with the guidelines established by International Commission

on Non-Ionizing Radiation Protection (ICNIRP) for public exposure to radiation as

depicted in the guidelines in force for Limiting Human Exposure to Electromagnetic

Fields Up to 300 GHZ. Reference level of human exposure is detailed in annex D

b. The installation firm should ensure that warning signs as shown in annex F are made

Cleary visible in the vicinity of RF hazard areas as in annex E

c. RURA should conduct both random and regular in-building coverage inspections in the

building and facilities to ensure compliance to these guidelines.


4 SERVICE LEVEL AGREEMENT (SLA) BETWEEN THE BUILDING OWNER/

MANAGER AND MNOs/SPs

An SLA should be secured before the commencement of the installation and should include

the following but not limited to:

1. Maintenance and support to ensure quality of service

2. The Communication Room accessibility

3. The maintenance schedules

4. Installation Warranty (Minimum 1 Year)


5 PROCEDURES TO OBTAIN INSTALLATION PERMIT FOR IBS-DAS

INSTALLATION

The below indicates the procedure to be followed by entities wishing to construct buildings.

5.1 Construction Permit Issuance

The building owner/ designer submit along other document the drawing indicating the

Communication Room and Risers design size and location to accommodate the IBS_DAS

installation as described in Clause 2.3 in this guidelines to the consent Authority.

The building owner/ designer submit along the drawing above a filled commitment form in

Annex F stamped by the Regulator to the consent authority.

5.2 Installation of IBS – DAS

The building owner/designer hire firms having a General Authorization to install IBS_DAS

delivered by the Regulator to ensure the quality of service inside the building

The building owner/designer engage all Mobile Network Operators in written format with a

copy to the Regulator for their readiness to conduct survey and install IBS_DAS actives

equipment.

5.3 Occupation Permit Issuance

Prior to the Occupation permit issuance, an assessment of the Quality and Strength of the

signal level should be conducted by the Regulator as set in regulation into force Governing

the Quality of Service of Cellular Mobile Networks Services


6 FINAL PROVISIONS

6.1 Transitional period

All existing buildings lacking cellular mobile network coverage should be compliant on

agreed terms and conditions between the building owner and the Regulatory Authority.

6.2 Commencement

These guidelines shall come into force on the date of their signature by the regulatory boards

Kigali, on 29th/ 05/2020

(Sé)

Dr Ignace GATARE

Chairperson of the regulatory Board


ANNEX A: DISTRIBUTED ANTENNA SYSTEM DIAGRAM

a) passive DAS

Main Power

Distribution

Box

(3 Phase

power

supply)

- Rectifier

(220 V to

-48 V)

- Battery

banks for

backup

DCDB

(100 Amps,…)

BBU/

DUW

/

DUG

RRU Antennas

Cooling Systems

(Air Condition and

Fan)

Passive

Equipments Active

Equipment

s

Equipment Room Floor


b) Active DAS

Seen to be attached to the guidelines No 009/GL/STD-QOS/ICT/RURA/020 of

29/05/2020 on the Requirements for Indoor Building Solution - Distributed Antennas

System Installation

(Sé)

Dr Ignace GATARE


Attenuator


ANNEX B: TYPE OF EQUIPMENT REQUIRED FOR DAS INSTALLATION

S/N Type Description Pictures

1 Multiband

Antennas

Indoor Omni Antenna to cater for all

frequency Band for LTE, UMTS, GSM

(700 Mhz, 800 Mhz, 900 Mhz, 1800 Mhz,

2100 Mhz)

Gain 2-3 dBi

Beam width 360

Polarized Vertical

VSWR < 2

2

Power Divider

( splitters and

combiners)

4X4 Hybrid combiner,

2x2 Hybrid combiner

2x1 combiner

2x1 splitter

1x4 splitter

Etc.

2-Way Splitter Loss +/- 3 dB

3-Way Splitter Loss +/- 5dB

4-Way Splitter Loss +/- 6dB

3 Coaxial Cable

Aluminum/Copper – corrugated cables 50

ohms

1/2" Flexible RF; 1/4" high-flex

3/8" high-flex; 7/8” high-flex; etc.

The loss in cable should be minimized as

possible


4 Connector

N Male Connector - Corrugated 1/2 " RF

Cable

Connector 7/16 DIN (m), for 1/2" feeder

Etc.

11

Jumper 2m DIN-DIN male 1/2" jumper

Etc.

13 Dummy Dummy load 100W, DIN male

Etc.

14

Rectifier +

Batteries back

up + Change

over

input: 220 VAC,

output -48 VDC.

Combined in one place (cabinet)

15 PDB (AC) Output: 220VAC

16 PDU (VDC)

Nominal Input/Output: 48VDC,

Can be pole mounted or wall mounted

17 FOC

Single mode

Multi- mode




System Installation

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Dr Ignace GATARE


18 Air Condition Depend on the size of the ER and location

Above 30,000 BTU

19 Ventilation Fan

Depend of the and humidity in the CR

flow rate of 2 000 m3/h at 30 Pa static

pressure


ANNEX C: STANDARDS USED IN THIS GUIDELINES

The information contained in this document, and further details on the Design and Location of

Communications Rooms and equipment specifications, can be found in the following

specifications and guidelines.

Guidelines Items Standards

Communication Room ANSI/EIA/TIA-569-A

ANSI/EIA TIA-569-D : Telecommunication Pathways and space

Conduits

Climate control system ETSI 300 019-1

System of Wiring BS 6004

Lightning surge protection system UL 1449

Cabling system ISO/IEC 14763-2

ANSI/TIA-862-B

Rectifier and electrical power system IEC 60146-1-1:2009

IEC 62326-1:2002

IEEE 428-1981

BS: 6493 (Section 1.2)

BS: 6493 (Section 1.6)

Splitter ETSI TS 101.952-1-1 V1.2.1

ETSI TR 101.728 V1.2.1

Antennas IEC 61000-6-3

IEC 61000-6-1

IEC 61000-6-6



System Installation

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Dr Ignace GATARE



ANNEX D: ICNIRP REFERENCE LEVELS FOR PUBLIC EXPOSURE (ICNIRP,

1998)

Frequency (MHz) Electric Field

Strength (V/m)

Magnetic Field

Strength (A/m)

Power

(W/m2)

Density

Up to 1Hz ------ 3.2X104 -----

1-8Hz 10,000 3.2X104/f2 -----

8-25Hz 10,000 4,000/f -----

0.025-0.8KHz 250/f 4/f -----

0.8-3KHz 250/f 5 -----

3-150KHz 87 5 -----

0.15-1MHz 87 0.73/f -----

1-10MHz 87/f1/2 0.73/f -----

10-400MHz 28 0.073 2

400-2000 MHZ 1.375f1/2

0.0037f1/2 f/200

2000-3000 MHZ

61 0.16 10

Notes: f is for frequency in MHz; V is volt; A is Ampere



System Installation

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Dr Ignace GATARE



ANNEX E: TYPE OF WARNING SIGN

The following are types of signs to be used to inform and/or warn of RF radiation hazards at

transmitter sites.

Sign Guidance on use Type

Notice to be used to alert persons to the

potential of exposures exceeding

the reference levels for the

public.

Caution to be used to alert persons to the

possibility of exposures

exceeding the reference levels

for workers.

Warning to be used to advise persons of

potential exposures that may

exceed the reference levels for

workers by a factor of 10 (the

safety factor in the (ICNIRP,

1998) guidelines.

Danger to be Normally only used for

situations in which immediate

and serious injury will occur

such as in the case of RF burns

and/or RF electrical shocks.

Source: ITU-T FG-SSC Electromagnetic field (EMF) considerations in smart sustainable cities



System Installation

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Dr Ignace GATARE


Do not alterStaff in Hazard AreaAttached By:

Date / /

RAD HAZ 93/2A


ANNEX F: IBS - DAS COMMITMENT FORM

To

........................................

........................................

........................................

Dear Sir/Madam,

I hereby commit myself to install Passive Equipment for IBS_DAS if found that, the building

on/in Plot No.................................................located in

District………………................................

Sector ………………………. Cell..............................Village………………………………

do not fulfill the signal strength level as set in regulation Governing the Quality of Service of

Cellular Mobile Networks Services of ………………................................................., Clauses

….....................................and;

I forward herewith the following plans and specifications in triplicate duly signed by me and

.........................................the Architect / Engineer / Structural / Engineer / Supervisor / Urban

/ Town Planner / Landscape Architect / Urban Designer (1),

Registration No. ........................................... who will supervise the building construction.

1. Building plan showing:

a. the Communication Room design

b. the Communication Risers Design

2. Building perspective/elevation showing:

a. the Communication Room design

b. the Communication Risers Design

I certify that the Communication Room and Risers has been designed according to the

guidelines No 009/GL/STD-QOS/ICT/RURA/020 of 29/05/2020 on the Requirements for

Indoor Building Solution - Distributed Antennas System Installation

I request that the development/construction may be approved and permission accorded to me

to execute the work.


Address of Owner.......................................................................................................................

Name of the Owner................................................................................................. (in block

letters)

Date: ...........................................................................

Signature of Owner.....................................................

Address of Architect / Engineer / Structural / Engineer / Supervisor / Urban / Town Planner /

Landscape Architecture / Urban Design (1)

...............................................................................................................................

Name of the Architect / Engineer / Structural Engineer / Supervisor / Urban / Town Planner /

Landscape Architect / Urban Designer (1)

........................................................................................................................... (in block letters)

Date: ...........................................................................

Signature of the Architect / Engineer / Structural Engineer / Supervisor / Urban / Town Planner

/ Landscape Architect / Urban Designer (1)

.....................................................................................

CC:

- Rwanda Utilities Regulatory Authority



System Installation

(Sé)

Dr Ignace GATARE


guidelines no 009/gl/std-qos/ict/rura/020 of 29/05/2020 … · 2020. 7. 18. · 2.1 design...

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