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Radio Network Planning Process

EXPLAIN CHAPTER 2

Network Planning (2)

Process (5)

Site Selection (5)


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Network planning team

data acquisitionsite survey and selection

field measurement evaluation

NW design and analysis

transmission planning

Network design

number and configuration of BS

antenna systems specifications

BSS topology

dimensioning of transmission lines

frequency plan

network evolution strategy

Network performance

grade of service (blocking)

outage calculations

interference probabilities

quality observation

Customer requirements

coverage requirements

quality of service

recommended sites

subscriber forecasts

External information sources

topo- & morphological datapopulation data

bandwidth available

frequency co-ordination

constraints

Interactions with external subcontractors

site hunting teams

measurement teams

operator

switch planning engineers

Network PlanningScope


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CoveragePlanning andSite Selection

ParameterPlanning

PropagationmeasurementsCoverageprediction

SiteacquisitionCoverageoptimization

External InterferenceAnalysis

NetworkConfiguration

andDimensioning

DEFINITION IMPLEMENTATION

Traffic distribution

Service distributionAllowed blocking/queuingSystem features

IdentificationAdaptation

Area / Cellspecific

Handoverstrategies

Maximumnetworkloading

Other RRM

NetworkOptimization

O & M

Surveymeasurements

Statisticalperformanceanalysis

QualityEfficiencyAvailability

Capacity Requirements

Requirementsand strategyfor coverage,quality andcapacity,

per service

ProcessGeneral

chapter 3 & 4 chapter 6

chapter 6 &

7chapter 2


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external inputs:

(traffic, subs. forecast,

coverage requirements...)

Initial NW dimensioning

TRX, cells, sites

bandwidth needed

NW topology

suggestions for

site locations

cell parameters

coverage achieved

coverage prediction

signal strength

multipath propagation

Site

pre-validation

site accepted ?planning

criteria fulfilled?

go to

frequency

planning

nominal cell plan

site inspectionreal cell plan

field measurements

N

N

N

create cell

data for

BS

C field measurements

ProcessRoll-out


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2. Radio NetworkPlanning Process Process

Site Building

issue search

area &

requirements

find suitable

site

candidates

calculate coverage

range of each

candidate

propagation

measurements

needed ?

transmission

links

available?

sign contract

with site

owner

get building permit

construction work

installing & testing

on air!


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Site Acquisition

radio

planner

fixed network

planner

measurement

teams

architect

network

operator

site acquisition

agentsite owner


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Documentation

SARF

Site AcquisitionRequest Form

SIR/SARSite Information(Acquisition) Report

TSS reportTechnical SiteSurvey Report

TDRSTechnical Data forRadiating System

...


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Radio criteria

good view in mainbeam direction

no surrounding high

obstacles

good visibility ofterrain

room for antennamounting

LOS to nextmicrowave site

short cablingdistances

Non-radiocriteria

space forequipment

availability ofleased lines ormicrowave link

power supply

access restrictions?

house owner

rental costs

Site SelectionCriteria


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2. Radio NetworkPlanning Process Site Selection

General Considerations

Proper site location determinesusefulness of its cells

Sites are expensive

Sites are long-term investments

Site acquisition is a slow process Hundreds of sites needed per network

Base station site is a valuable

long-term asset for the operator


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wanted cell

boundary

uncontrolled, strong

interferences

interleaved coverage areas:

weak own signal, strong foreign signal

Avoid hill-top locations for BS sites uncontrolled interferences interleaved coverage awkward HO behaviours but: good location for microwave links!

Site SelectionBad Site Location


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wanted cell

boundary

Prefer sites off the hill-tops use hills to separate cells contiguous coverage area needs only low antenna heights if sites are

slightly elevated above valley bottom

Site SelectionGood Site Location


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Collect all necessary information abou

tsite details

site coordinates, height above sea level, exactaddress

house owner

type of building

building materials (photo)

possible antenna heights

360deg photo (clearance view)

neighbourhood, surrounding environment

drawing sketch of rooftop antenna mounting conditions

access possibilities (truck?, road, roof)

BS location, approx. feeder lengths

Site SelectionSite Info

Documents

2. Radio Network Planning Process