chapter 2 - optimizing the equipment room - 280614 ok

8/12/2019 Chapter 2 - Optimizing the Equipment Room - 280614 OK

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Chapter 2

Optimizing the Equipment Room


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Outlines

Equipment RoomWhat it is?

Site Environmental Specification

Space and Location Requirements

Construction Requirements for the Equipment Room

Environment Requirements for Operating the BTS

Equipment Room Security: Site Boss Example

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Equipment Room What it is?

The equipment room is room or

space within a building for the

storage or installation of

mechanical or electrical/electronic

devices

To optimize equipment room,

fullfil the following requirements:


Heat Dissipation and CoolingRequirements


Construction & Environment

Requirements for Operating the BTS

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Environmental Specifications

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Heat Dissipation and Cooling Requirements

The BTS chassis must be intended for mounting in a cabinet or

other rigid framework which is fixed to the building

A 2.2-meter or 2.6-meter rack can accommodate up to three

BTS chassis

There is no space limitation or minimum equipment clearances

for the BTS

The BTS chassis is cooled by the flow of air between the

elements mounted in the cabinet

The fans and air baffles ensure that sufficient air flows betweenthe elements

The cooling system, including the baffle and fan tray, is supplied

with each chassis and is an integral part of the BTS chassis

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Calculating the Heat Dissipation of the BTS

Use the following formula to calculate the heat dissipation for

each BTS

[(Module 1 power consumption) + (Module 2 power

consumption) + (Module N power consumption)] x 2.3884 =

BTU

For example, for a BTS with 1 AU and 1 NPU (and no

redundancy), the heat dissipation is as follows

[(PIU = 30 Watt) + (PSU = 200 Watt) + (NPU = 65 Watt) + (AU-IDU =

41 Watt) + (AVU = 24 Watt)] x 2.3884 = 860 BTU

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Installation Tools (1)

The following table lists the recommended tools and sealing

materials required for installation

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Installation Tools (2)

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The layout of the equipment

room must be reasonable,

feasible, and neat

The BTS cabinet can be

installed against the wall

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Installation Directions of the Cabinets

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Location Requirements

Location requirements of the BTS (unit:mm)

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Construction Requirements for the EquipmentRoom

The equipment room consists:

Exchange room

Control room (area not less than 20 m2)

Auxiliary room

Factors such as the shortest route of the feeders, bearing

capacity of the equipment room, power supply, and

transmission mode should be taken into consideration

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Requirements for the Area of the EquipmentRoom

The room should be large enough for equipment installation

and future capacity expansion

The feeder window can be installed easily, and the routing of

the feeders inside the equipment room is convenient

It is convenient and easy for the maintenance personnel to

install or maintain the equipment

It is convenient to open and close the cabinet door

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Requirements for the Height of the EquipmentRoom

The minimum height of the equipment room refers to the

distance between the horizontal beam or the air vent and the

floor

The minimum height of the equipment room should be 3

meters

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Requirements for the Bearing Capacity

The equipment is quite heavy

The checking should be done in compliance with the weight,

basal area, position for the equipment, and structure of the

building

If the bearing capacity is not enough, reinforce the building

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Requirements for the Floor

Floorboards should be laid down firmly, and there should be

no space between the boards

The horizontal error per square meter should not be greater

than 2 mm

Cable holes in the floor should be capped with access covers

to protect cables from rodents

Position for the holes should be determined in compliance with

the engineering design and the dimensions should be accurate

to ensure easy installation

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Requirements for the Door and Windows

The minimum dimensions of the door are 2 meters in height

and 1 meter in width

The door and the windows should be sealed with dustproof

plastic tapes

Reflectors or colored glass should be applied to the windows

through which sunlight directly enters the room

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Requirements for Walls and Rooftop

The walls and the rooftop should be durable, heat-resistant

and leakproof

Leakage-proof measures should be taken if there are antenna

poles or holes in the rooftop

The bearing capacity of the devices should also be taken into

consideration

Flat paint can be applied to the walls, but chalked paint is not

recommended

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Requirements for Dust Proofing in theEquipment Room

Requirements for the dust concentration in the equipment

room

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Requirements for the Quake Proofing of theEquipment Room

The intensity requirement of the shockproof design of the

equipment room must be one degree higher than the local

intensity requirement

If the equipment room does not meet this requirement,

reinforce the equipment room

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Environment Requirements for Operatingthe BTS

In the long-term operating environment, the BTS can operate

properly for a long period

In the short-term operating environment, the BTS must

operate for less than 96 hours each time

Less than 15 days each year in total to ensure proper operation

without damaging the hardware

The environment requirements focuses on the following

The climatic

Biological

Air purity

Mechanical stress requirements

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Climatic Requirements

The climatic requirements for the normal operation of the BTS

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Biological Environment Requirements

The biological requirements related to the operating

environment are as follows:

The environment should not be conducive for the growth of

fungus or mildew

There should be no rodents, such as rats

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Air Purity Requirements

The air should be free from explosive, conductive, magneto-

conductive, or corrosive dust

The density of chemically active substances should comply

with the requirements listed in table below

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Mechanical Stress Requirements

Mechanical stress requirements for the normal operation of

the BTS

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Equipment Room Security: Site Boss Example

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Site Boss pro vides ful l range ofhardware and sof tware tools to

manage the passive elements at a

Base Transc eiver Station

chapter 2 - optimizing the equipment room - 280614 ok

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