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WiMAX Wireless Network Planning Process

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Contents

Reasons for Network Planning

Aim of Network Planning

Steps in Network Planning

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Reasons for Network Planning

Coverage varies with the following parameters

System loading

Velocities of mobile users

Data rate

Complexity of the practical system

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Contents

Reasons for Network Planning

Aim of Network Planning

Steps in Network Planning

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Aim of Network Planning

Best possible coverage in the service areas

Forecast traffic distribution precisely, design the best

possible Base Station topology

Optimal system parameters for best Quality of

Service

Fewest equipment and lowest cost when capacityand QOS requirement are met

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Contents

Reasons for Network Planning

Aim of Network Planning

Steps in Network Planning

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Steps in Network Planning

Pre-research

of Project

Requirement

Analysis

Survey of

Provided

Sites

Reduce

Process

Network

Evaluation

Wireless

Environment

Test

Site

Distribution

Design

Survey

Report

Submission

Site Survey

Network Plan

Simulation

Neighbor

Planning

Wireless Plan

Report

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Steps in Network Planning

Pre-research

of Project

Requirement

Analysis

Survey of

Provided

Sites

Reduce

Process

Network

Evaluation

Wireless

Environment

Test

Site

Distribution

Design

Survey

Report

Submission

Site Survey

Network Plan

Simulation

Neighbor

Planning

Wireless Plan

Report

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Pre-Research of Project

Examine the content and acceptance

standards of the project contract

Conduct survey of the environment

of the project site, if necessary

Amend the items of the contract

that cannot be realized

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Steps in Network Planning

Pre-research

of Project

Requirement

Analysis

Survey of

Provided

Sites

Reduce

Process

Network

Evaluation

Wireless

Environment

Test

Site

Distribution

Design

Survey

Report

Submission

Site Survey

Network Plan

Simulation

Neighbor

Planning

Wireless Plan

Report

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Requirement Analysis

Determine the detailed customer requirement

for the network

Survey the status of the existing network and

find out the development plan

Forecast both the short-term and long-term

traffic demand

Clarify and establish the acceptance standards

Investigate the wireless propagation

environment (such as topography &

physiognomy)

Verify the traffic distribution

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Requirement Analysis

Topography & physiognomy

Population distribution

Coverage demand

Wireless frequencyoccupation

Strategy for developingsubscribers

Information of provided sites

Traffic distribution

Demand of system

parameters

Special demand

OUTPUT:

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Requirement Analysis

Coverage demand

(Coverage boundary)

Traffic demand

(Important area)

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Steps in Network Planning

Pre-research

of Project

Requirement

Analysis

Survey of

Provided

Sites

Reduce

Process

Network

Evaluation

Wireless

Environment

Test

Site

Distribution

Design

SurveyReport

Submission

Site Survey

Network Plan

Simulation

Neighbor

Planning

Wireless Plan

Report

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Survey of Provided Sites

Collect information about the wirelesspropagation environment of the

provided sites.

In case these sites meet the

topological structure of the network

and the users' needs, try to make

these provided sites workable to

reduce investment

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Steps in Network Planning

Pre-research

of Project

Requirement

Analysis

Survey of

Provided

Sites

Reduce

Process

Network

Evaluation

Wireless

Environment

Test

Site

Distribution

Design

SurveyReport

Submission

Site Survey

Network Plan

Simulation

Neighbor

Planning

Wireless Plan

Report

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Reduce Process

According to the analysis report of the

requirement and sites survey result, decide

suitable procedure of the project.

Some following Working content might be

cut down after this stage.

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Steps in Network Planning

Pre-research

of Project

Requirement

Analysis

Survey of

Provided

Sites

Reduce

Process

Network

Evaluation

Wireless

Environment

Test

Site

Distribution

Design

SurveyReport

Submission

Site Survey

Network Plan

Simulation

Neighbor

Planning

Wireless Plan

Report

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Network Evaluation

Carry out some tests to

evaluate customer's existing

network, and according to the

result plan the network

construction for the next stage.

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Steps in Network Planning

Pre-research

of Project

Requirement

Analysis

Survey of

Provided

Sites

Reduce

Process

Network

Evaluation

Wireless

Environment

Test

Site

Distribution

Design

SurveyReport

Submission

Site Survey

Network Plan

Simulation

Neighbor

Planning

Wireless Plan

Report

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Wireless Environment Test

Scan the plannedcoverage area to make

sure the frequency

spectrum is clean

Perform correction of thepropagation model by CWT

(continuous wave transmitter)

test

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Spectrum Scanning

Interference with wide bandwidth and 3dB more than the thermal

noise will provide strong interference

Narrowband Interference

Broadband Interference

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Steps in Network Planning

Pre-research

of Project

Requirement

Analysis

Survey of

Provided

Sites

Reduce

Process

Network

Evaluation

Wireless

Environment

Test

Site

Distribution

Design

SurveyReport

Submission

Site Survey

Network Plan

Simulation

Neighbor

Planning

Wireless Plan

Report

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Site Distribution Design

Set up the BS

topology according

to the results of the

link budget andcapacity

calculations. The

existing sites

should be used asmuch as possible.

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Link budget

Link budget

Determine maximum path loss

allowed

Determine maximum cell radius

Downlink and uplink

Keep balance

uplink

downlink

Mobile BTSCable

loss

Antenna

gainPath loss

Antenna

gain

Cable

lossMargin

building

Marginslow fade + penetrationloss+...

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Capacity Calculation

Capacity LimitedInterference rise

Difficult To obtain resource

Data rate slow

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TopologyIdeal Topology Unideal Topology

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Site Selection Principles

The density layout of BTS shouldbe according to the traffic density

distribution

Coverage of important users and

dense areas should beguaranteed

Choose existing telecom center

buildings or microwave sites if

possible Perform simulation to verify pilot

pollution areas and blind spots

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Steps in Network Planning

Pre-research

of Project

Requirement

Analysis

Survey of

Provided

Sites

Reduce

Process

Network

Evaluation

Wireless

Environment

Test

Site

Distribution

Design

SurveyReport

Submission

Site Survey

Network Plan

Simulation

Neighbor

Planning

Wireless Plan

Report

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Site Survey Principles

Final site location may deviate by no morethan 1/4 of the cell radius from the initial

location

Convenient traffic, reliable electricity, safe

environment should also be considered

Avoid high building obstructions, avoid

strong wireless transmitter, radar or other

serious interference

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Avoid obstruction near the site

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Avoid gorge wave-guide effect

in narrow street

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Avoid propagating in wide road

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Site Survey Result

Cell sites may be moved, and cellconfiguration and directions may bemodified according to the site survey result

The sites are distributed evenly ,andaccord with traffic density distribution

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Steps in Network Planning

Pre-research

of Project

Requirement

Analysis

Survey of

Provided

Sites

Reduce

Process

Network

Evaluation

Wireless

Environment

Test

Site

Distribution

Design

SurveyReport

Submission

Site Survey

Network Plan

Simulation

Neighbor

Planning

Wireless Plan

Report

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Survey Report Submission

Find out the customer's suggestion

on the preliminarily selected planning

sites, and submit the report.

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Steps in Network Planning

Pre-research

of Project

Requirement

Analysis

Survey of

Provided

Sites

Reduce

Process

Network

Evaluation

Wireless

Environment

Test

Site

Distribution

Design

SurveyReport

Submission

Site Survey

Network Plan

Simulation

Neighbor

Planning

Wireless Plan

Report

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Network Plan Simulation

Carry out simulation to verify the wireless

planning and design.

Guarantee the plan to meet the customer's

demand .

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Steps in Network Planning

Pre-research

of Project

Requirement

Analysis

Survey of

Provided

Sites

Reduce

Process

Network

Evaluation

Wireless

Environment

Test

Site

Distribution

Design

SurveyReport

Submission

Site Survey

Network Plan

Simulation

Neighbor

Planning

Wireless Plan

Report

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Neighbor Plan

Determine neighbors for each cell

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Steps in Network Planning

Pre-research

of Project

Requirement

Analysis

Survey of

Provided

Sites

Reduce

Process

Network

Evaluation

Wireless

Environment

Test

Site

Distribution

Design

SurveyReport

Submission

Site Survey

Network Plan

Simulation

Neighbor

Planning

Wireless Plan

Report

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Wireless Plan Report

Wireless network planning and design offer

information for the following stage,

construction of the project.

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