wimax planning concepts

8/10/2019 wimax planning concepts

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1 Nokia Siemens Networks. All rights reserved.

Rome 29th January 2008

Enrico Lorenzoni

WiMax: planning concepts andenvironmental impacts


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Network Planning Approach:

- Network Planning Process Overview- Propagation Model- Planning Accuracy

- Tracing tool and Post ProcessingSolution- NSN Backhauling to support

customer needs- Flexi BTS Disposal with Minimumenvironmental impact

Nokia Siemens Networks Planning Contents:


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Network PlanningApproach


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An iterat ive processAn iterative processto reach theto reach the

coverage, capacitycoverage, capacity

& quality criterions& quality criterions

Network Planning Process Overview

Customer requirement analysis

Provision of digital terrain database

and maps Radio propagation measurements

[Tuned Propagation Model]

Initial Radio Planning [Nominal Plan].

Technical Site Surveys, RF SiteEvaluation and Candidate Ranking [Site

Survey Report/Issues of Search AreaRequest].

Final Radio planning [ParameterPlanning/Final Report ]

Initial tuning [Tuning Report]

Support for Network Element

Acceptance & Maintenance

NetworkPlanningProcess

Network

Planning

Site Acquisition

Design &Construction

Implementation Acceptance Maintenance


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Propagation Model Choice

WyMAX

Business

Flexi Base Station

WyMAX

Business

WyMAX

Business

Flexi BTS

NLOS


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Propagation Model in NLOS: successfully developed byNSN R&D department in Cassina de Pecchi

Ray Tracing simulations indifferent clutters

For Fixed Frequency and Bs HeightPathloss vs Distance is displayed

Curve of logarithmic regression is

calculated to establish coefficients (Ki)

Fitting of curve to simulation data from

different clutters to calculate (C_loss)

Path Loss (3.5 GHz)

-180

-170

-160

-150

-140

-130

-120

-110

-100

-90

-80

-70

-60

1 10 100 1000 10000

Distance [m]

Ploss[dB

]

Hb = 25mHb = 30m

Hb = 35m

-120.00

-110.00

-100.00

-90.00

-80.00

-70.00

-60.00

-50.00

-40.00

-30.00

-20.00

-10.00

0.00

10 100 1000 10000

Distance ( log)

RxPower(dBm)

Erceg B

Selec ted Model


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Propagation ModelComparison between different propagation models

BS Height: 30 mTS Height: 2 m

Clutter Type: Urban

Frequency: 3.5 GHz


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Planning Accuracy

Planning Accuracy in every kind of environment is closely linked several parameters:

The type of cartographic data used as an input

Low Resolution Data

Medium Resolution Data

High Resolution Data

The choice of the propagation model

Deterministic

Empirical (Strong Statistics Description)

Model Tuning (in case of Empirical Model utilization) or Cluster Tuning (in case

of Deterministic Model utilization)

The type of technology to simulate

Fixed or Mobile WiMax

CPE type and height


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Planning Accuracy:

Medium Resolution Cartographic Dataset- Empirical models with its dedicated tuning

- Deterministic models using margins.

Building data are not available

on the cartographic dataset,

it is not taken into account as a physical

obstacle for the signal propagation.

Coverage prediction will be rough


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10 Nokia Siemens Networks. All r ights reserved.

Planning Accuracy:High Resolution Cartographic Dataset

- Fully deterministic simulation (in order to simulate

the canyon effect)

- The buildings are here physical obstacles to the

standard signal propagation.

Build ing data are available

on the cartographic dataset,

Each building along the direct path

becomes a physical obstacle to the radio

propagation

Canyon effect: the outline

of each building in

3D generates "propagation corridors

in the streets, when the transmitters

are placed at this level


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Tracing tool and Post Processing Solution

MUSA

Tool vendors:

WirelessLogix/COUEI

Mobile WiMAX support available already

Measurement toll X-CAL with WiMAX mobile ZyXEL

Post processing tool is X-CAP WiMax\MUSA

Agilent (optional)

WiMAX and Voip MOS supported

Nemo WiMAX supported in road map


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MUSA - NSN post processing tool

GSM, GPRS, EDGE, UMTS, HSDPA, DVB-H, FOFDM, Wimax

Drive test, PMC, IMSI Analysis

Multivendor technology

Coverage Analysis and Optimization

Radio Parameter Adjustment

Load Simulation

DVB-H coverage and delay optimization

MUSA is a post processing tool created in NSN in order to

support mobile networks performances analysis and optimization

MUSA has been designed for:


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NSN Backhauling to support

customer needs


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A Waymax/Flexi BTS supports different backhaul

(transport) interfaces in a flexible way.

Access Point/ Fiber

Wimax Site

Wimax Site

Wimax Site


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Last Mile Aggregation Backbone

PDH Access

2 Mbps to 120 Mbps

Adaptive Modulation Flexible Voice and

Ethernet Traffic Mngt.

BTS Integrated MW

Node configuration

SDH Trunk

155 Mbps to 2 Gbps in a single rack

Full hot unit replacement Voice and Ethernet traffic

management

SDH Access

155 Mbps to 622 Mbps

622 Mbps in 56 MHz up to N+1 protection

Voice and Ethernettraffic management

PMP Access

736 Mbps per cell

Effective spectrumutilization

Flexible Voice andEthernet Traffic

Mngt.

NSN Microwave Complete Backhauling Portfolio

including Microwave


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Coverage test and related backbone analysis for apreliminary Wimax Trial in Italy

Settore AntagnodSettore Frachey


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Flexi BTS Disposal withminimum environmentalimpact


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Wide area Flexi WiMAX BTS fits with traditionaland new site locations

Stackedon flooror shelf

Feeder-lesssites

On wallor pole

Hiddensites

BTS or19cabinets

At baseof mastor tower

On topof mastor tower


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Nokia Flexi WiMAX BTS: a solution for high-capacity data designed to minimize the total BTSsite CAPEX and OPEX

- Extremely cost- efficient site solutions

- Faster site acquisit ion

- Lower installation costs

- Lower electricity bills

- Lower site rent

- Less spare parts and inventory

- Lower maintenance costs

- Lower network management costs

In 1/1/1 configuration

3G Node B > 965 W

2G BTS > 1000 W

Flexi Wimax BTS < 630 W

Waymax BS < 600 W


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Ad Hoc Solutions with minimum environmentalimpact

NSN is keen on the environmental impact and also expert in

Camouflage Solutions

wimax planning concepts

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