03_RN31543EN50GLA0_Radio Network Planning Process

Nokia Academy Radio network planning process

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Module Objectives

At the end of the module you will be able to:

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Explain the radio network planning process

•

Explain the main steps in dimensioning process

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Radio Network Planning Process - Radio Network Planning process

- Radio Network Dimensioning process - Appendix

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Radio network planning phases PREPLANNING Dimensioning Requirements & strategy for coverage, capacity & quality

Configuration Planning Node-B Configuration Antenna line configuration

PER SERVICE

 Network configuration

Coverage & Capacity Planning

Parameter Planning

Post-launch optimisation

Propagation measurements Coverage prediction

Area/cell specific

Measurement surveys

Load estimation Traffic distribution

Handover strategies

Planned Service & QoS definition

other RRM

Statistical performance analysis

Power budget PER SERVICE

Site selection & planning Site acquisition

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POSTPLANNING

DETAILED PLANNING

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Pre-launch optimisation Measurements

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 Quality  Efficiency  Availability

Radio network planning tasks Site selection & planning -

Practical site selection based on target site locations & available sites Site implementation plan Actual site locations & implementation plans

Configuration Planning -

Configuration planning is related to possible configurations as well as feature implementation Future configuration takes into account the possibility to expand

Coverage & Capacity Planning -

is very much tied to Site selection & Configuration planning Coverage requirements needs to be met Capacity requirements estimated + future expansions

Parameter planning -

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Initial parameter configuration Scrambling code plan, neighbour plan Detailed parameter planning Optimised/verified parameter plan

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Planning tasks & network - Pre-planning activities are high especially when operator is Greenfield or deploying a new technology - Main focus in existing networks are in coverage & capacity as well as configuration planning - Optimisation is always recommended to be done and kept as a very important task of network operation

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Overall planning and optimisation process • The overall Planning Process can be described with the following figure:

Performance Monitoring Performance Monitoring Radio Network Planning

System Dimensioning • Node B count & configuration • Adapter count & configuration • Transmission capacity & configuration

• • • • • • • • •

Site selection Site design 3G neighbor list 2G neighbor list 4G neighbor list Scrambling codes Location areas Routing areas URA areas

Link budget analysis

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Pre-launch Optimisation • 3G neighbor list • 2G neighbor list • 4G neighbor list • Antenna tilts • Local area parameter tuning

Post-launch Optimisation • • • • •

3G neighbor list 2G neighbor list 4G neighbor list Antenna tilts Local area parameter tuning • Additional sites • User experience optimisation

Wide area parameter tuning

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Capacity Evolution • • • • • • • • •

RF carriers Sectorisation ROC to CEC System modules Node B power Baseband proc. Transmission HSPA/HSPA+ New Features Microcells

Radio Network Planning Process - Radio Network Planning process

- Radio Network Dimensioning process • Dimensioning process • Traffic dimensioning (DCH + HSDPA, DCH + HSPA)

- Appendix • Dimensioning in case of Rel99 traffic only

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Radio Network Dimensioning process – Basics Dimensioning process can be split in high level steps: • Input data: has big influence on whole result • Cell Plan: needs to follow customer input & system performance • UTRAN Network Plan: needs to follow customer requirements and also detailed mapping to planned network conditions • UTRAN Final Network: is the result from the iterative analysis of inputs, performance values and also area & requirement mapping

Final Network

UTRAN

Fixed Network

Plan - UTRAN

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Cell Plan

Input Data

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Input Data Input data includes for example: • Traffic model & capacity requirements • Coverage Requirements • Quality Requirements

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similarly customer might have special requirements (e.g. road, train coverage)

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when number of sites is fixed, the traffic model, capacity/coverage and quality requirements are not used as input

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More as an output of estimation (i.e. what can be achieved with X number of sites)

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Traffic Model – Nokia Standard NOKIA Standard Traffic Model (Basic Assumptions) can be used: - purpose of having a default traffic model is to have information about the traffic demand available if there is no detailed traffic model provided for network dimensioning - NOKIA Standard Traffic Model reflects average situation in real networks and is defined: - assuming a ‘standard’ subscriber - using all accounted services in parallel – the service split is applied on a traffic demand basis (no split on a subscriber basis)

UMTS Traffic Evolution: the current NOKIA view on the evolution of traffic demand for a set of identified key services in UMTS. These key services considered in the traffic model are:  Speech service  Data services like web browsing, email or file download  Video telephony

UMTS Traffic Evolution is based on the traffic snapshots from commercial networks and internal assumptions for Subscriber traffic growth See ``Dimensioning WCDMA RAN: Traffic Modeling (DN0979695)`` from RU50 Customer Documentation

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Cell Plan Cell Planning includes • • • •

offered traffic & its distribution link budget  coverage maximum air interface capacity Node B Hardware configuration

Cell coverage is dependent on: • • • •

Frequencies System performance Antennas Environment characteristics

Cell capacity is dependent on: • Traffic model • Frequencies • selected features

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HW configuration is dependent on: • Cell coverage, sectorisation, # of carriers • Selected features & capacity requirements

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Cell Plan & Example inputs for coverage, capacity & HW •

Basic information needed for dimensioning -

•

Pilot transmit power Noise Figure Transmit power Antenna gain Body Loss

CPICH EIRP

HSDPA associated DCH Scheduling algorithm (e.g. RR or PF) Number of codes, 5/10/15 Number of HSDOA/HSUPA users & L1 throughput

Path loss & margins cell range calculation

Antenna height BS / UE Location probability, Indoor location probability Building penetration loss Coverage limiting Standard deviation

Area & capacity factors -

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Node B type (e.g. noise figure) Antenna & antenna gains cable loss UL/DL (MHA usage) # of carriers, # of sectors Node B output power (40W/20W)

Link budget gains & margins per clutter -

•

Feeder losses

HSPA information -

•

UE type: transmit power (dBm) & possible antenna gain (dB) Body loss

Node B information -

•

# of sectors

# of sectors

UE information -

•

Antenna gain MHA usage

frequency (e.g. 2100, 1900, 850) Clutter type (e.g. dense urban, urban, suburban, rural). Subscribers, subscribers/area Total area to be covered [ km2]

service, UL DPCH (16/64/128/384), HSDPA (cell edge throughput) or HSUPA (cell edge throughput) & Planned load

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Frequency Noise Figure Output power # of carriers

UTRAN Network Plan  Final network

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Based on cell plan

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Incl. traffic modeling

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Noticing also environment characteristics & special requirements

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Main inputs: •

Area size

•

Number of sites & configurations

•

Detailed access interface configuration & connections

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Coverage & capacity dimensioning - Dimensioning process main parts: • Coverage dimensioning  Link Budget • Capacity dimensioning  Air Interface and Baseband capacity

- Link budget & Capacity dimensioning are connected to each other via the air interface load - Iterations may be needed to get both right

Coverage based on: • DCH services • HSDPA • HSUPA • Voice over HSPA

Coverage dimensioning

Link budget

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Capacity dimensioning

Capacity for: • DCH services • HSDPA • HSUPA • Voice over HSPA • Service (e.g.DCH) impact on other services (e.g.HSPA) • Spreading Code capacity

Capacity

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Radio Network Planning Process - Radio Network Planning process

- Radio Network Dimensioning process • Dimensioning process • Traffic dimensioning (DCH, DCH + HSDPA, DCH + HSPA)

- Appendix • Dimensioning in case of Rel99 traffic only

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Dimensioning in case of Rel99 & HSDPA traffic - Link Budget calculation for: • DCH Channels • HSDPA cell edge throughput

Many issues impacts on inside cell throughput

- DCH Link Budget calculation: • for bearers for which coverage is requested • using default or project specific parameters - HSDPA Link Budget calculation • for max. cell edge throughput - Cell edge condition is always worst case - Throughput is still limited by many issues • UE capability • Features • Interference • Available power & code tree

At cell edge ~350 kbps, macro cell Mean cell throughput (1 transimttion upto 15 codes)

- Capacity & equipment calculation • among R99 limitation (e.g. total number of sites available) • HSDPA capacity  SINR • HSDPA with lower priority than R99 CS services • HSDPA features impact on capacity + needed HW

3,0

Same distance can mean totally different conditions

2,5

data rate [Mb/s]

- Optional: Calculation of CPICH Link Budget in relation with the limiting bearer

cell edge

3,5

- Identification of the limiting bearer in UL & DL (incl. HSDPA link) • The one with the smallest cell range

2,0

1,5

1,0

0,5

0,0 0,45

0,6

0,75

0,9

1,05

antenna distance [km]

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1,2

1,35

Dimensioning in case of Rel99 & HSPA traffic - DCH Link Budget calculation • For bearers for which coverage is requested • Using default or project specific parameters

- HSDPA Link Budget calculation • for max. cell edge throughput ( Rel’99 & HSDPA traffic) • Using default or project specific parameters - HSUPA Link Budget calculation • For cell edge throughput • Using default or project specific parameters

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• Identification: limiting UL bearer (incl. HSUPA link) & DL (incl. HSDPA link) • The one with the smallest cell range • HSUPA: new challenges on dimensioning • HSUPA is sharing capacity between other UL services • HSUPA equipment dimensioning differs from R99 & HSDPA

• When network HSPA services are increasing commonly additional carrier is needed (higher HSPA demand)

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Radio Network Planning process - Summary • Planning process can be divided to 3 main phases: • Pre-planning • Detailed planning

• Successful dimensioning depends on sufficient & accurate input data • Even best dimensioning results provides only an estimate

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RN31543EN50GLA0

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Radio Network Planning Process - Radio Network Planning process

- Radio Network Dimensioning process • Dimensioning process • Traffic dimensioning (DCH + HSDPA, DCH + HSPA)

- Appendix • Dimensioning in case of Rel99 traffic only

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RN31543EN50GLA0

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Dimensioning in case of Rel99 traffic only

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DCH Link Budget calculation • For bearers for which coverage is requested • Using default or project specific parameters

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Identification of the limiting bearer in UL & DL • The one with the smallest cell range

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Optional: Calculation of CPICH Link Budget in relation with the limiting bearer

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Usage of the Link Budget results to the Capacity dimensioning • How many sites available within certain loading assumptions

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Capacity & equipment calculation

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Coverage dimensioning

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Capacity dimensioning

Thank You !

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RN31543EN50GLA0

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