TenXc BSA Planning and Deployment

Copyright ® 2006 | Proprietary and Confidential

RF Introduction to Bi Sector Array Planning and Deployment

Confidentiality StatementThis document contains information that is the property of TenXc Wireless. This document, in whole or part, may not be used, disclosed, or reproduced, in any form or by any means including but not restricted to: photographic, electronic, magnetic, and

mechanical methods without the express written consent of TenXc Wireless.


Agenda

Page 2

• Overview of Cellular Systems and RF planning• Using sectorization to increase capacity and lower costs• How the Bi Sector Arrays improve on existing antennas• How to choose BSA sites for deployment• How to plan BSA deployments in a typical network

• Propagation planning• BCCH planning• TCH Planning

• How to optimize BSA deployments• Field examples of deployments and issues in the field


OVERVIEW OF CELLULAR CONCEPTS

Page 3


Basic Concepts

Page 4

• Effective Radiated Power (ERP) – measured in dB– The radiated power from a half-wave dipole

• Effective Isotropic Radiated Power (EIRP) – measured in dBi– The radiated power from an isotropic source

EIRP = ERP + 2.15 dB• Isotropic RF Source

– A point source that radiates RF energy uniformly in alldirections (I.e.: in the shape of a sphere)

– Theoretical only: does not physically exist

• dB – measure of power– 10*Log10(Pwatts)

• dBm – measure of power referenced to 1 mW– 10*Log10(Pwatts)-30

• Wavelength – measure of distance between ‘peaks’ in a radio wave– Speed of light = frequency * Wavelength (c=fλ

)


Propagation Modeling

Page 5

From a point source basic theory gives us Friis transmission formula

Mobile world is more complex- Reflections- Refraction- Absorption- Multiple paths

Attenuation coefficient of Free Space Path loss is 2 (2*10Log(d)), coefficient of Cellular environments is between 2 and 4


Hata Model – Used for GSM 900

Page 6

Hata Model – good up to 1GHz

• The propagation loss in an urban environment in the GSM range is calculated from:

Lp = 69.55+26.16Log(f)-13.82Log(hb)-a(hm)+[44.9-6.55Log(hb)]*Log(d)

hb= base station height (m), 30-200 mhm= mobile height (m), 1-10 mf = frequency (MHz), 150 to 1500 MHzd = distance (km), 1-20 km

a(hm) = mobile antenna correction factora(hm) = [1.1Log(f)-0.7]hm - [1.56Log(f)-0.8] dB for urban

= 3.2[Log (11.75hm)]2 - 4.97 dB for dense urban

Lp (suburban) = Lp (urban) - 2[Log(f/28)]2 - 5.4

35.2 log(D) for 30m


COST 231- Used for DCS 1800

Page 7

COST-231 Hata Model – extends Hata beyond 1GHz

• The propagation loss in an urban environment in the DCS range is calculated from:

Lp = 46.3+33.9Log(f)-13.82Log(hb)-a(hm)+[44.9-6.55Log(hb)]*Log(d)+Cm

hb= base station height (m), 30-200 mhm= mobile height (m), 1-10 mf = frequency (MHz), 1500-2000 MHzd = distance (km), 1-20 km

a(hm) = mobile antenna correction factora(hm) = [1.1Log(f)-0.7]hm - [1.56Log(f)-0.8] dB for suburban/urban

= 3.2[Log (11.75hm)]2 - 4.97 dB for dense urbanCm = 0 dB for suburban/urban

= 3 dB for dense urban

Lp (suburban) = Lp (urban) - 2[Log(f/28)]2 + 5.4


How to use models

Page 8

80.0

90.0

100.0

110.0

120.0

130.0

140.0

150.0

160.0

170.0

180.0

190.0

200.0

Isot

ropi

c Pa

th L

oss

(dB

)

Distance (km)

Path Loss Modeling - All

1800 MHz rural

1800 MHz Sub Urban

900 MHz rural

900 MHz Sub Urban


Path Loss and Link Budgets

Page 9

Example Link Budget 3-sector Bi-Sector Array1800 DCS DL UL DL ULTX Power 45.7 30.0 45.7 30.0Tx Power (watts) 37.2 1.0 37.2 1.0Combiner Loss 0.0 0.0 0.0 0.0Duplexor Loss 0.0 0.0 0.0 0.0Feeder Loss 2.0 0.0 2.0 0.0TX Antenna gain 18.0 0.0 19.2 0.0EIRP 61.7 30.0 62.9 30.0

RX Antenna Gain 0.0 18.0 0.0 19.2Feeder loss 0.0 2.0 0.0 2.0Receiver Sens -104.0 -112.5 -104.0 -112.5Diversity Gain 0.0 3.5 0.0 3.5Path loss 165.7 162.0 166.9 163.2

Example GSM link Budget

Note: UL limitation

Other factors that need to be understood- Building losses (12 to 20 dB)- Vehicle losses (6 dB)- Body/Head losses (2 to 3 dB)

Copyright ® 2006 | Proprietary and Confidential Page 10

Path Loss and Link Budgets

Fade Margin – based on Jakes Theory where Fu = fraction of area that the received signal x is greater than the threshold over the whole cell area. The equation is referred to as the Cell Area Probability

( )Fu erf aab

erfab

bb= − +

−⎛

⎝⎜

⎞

⎠⎟ −

−⎛⎝⎜

⎞⎠⎟

⎡

⎣⎢⎢

⎤

⎦⎥⎥

12

11 2

11

2exp ( )a x=

−0

2α

σ

bn e

=10

2log( )

σ

σ

is the composite standard deviation of both shadow fading and distributions of inbuilding losses.

DENSE URBAN URBAN SUBURBAN DENSE URBAN URBAN SUBURBAN FREQUENCY (MHz) 900 900 900 1800 1800 1800BS ANT. HGT (m) 30 35 35 30 35 35MOBILE ANT. HGT (m) 1.5 1.5 1.5 1.5 1.5 1.5Cm (3dB IF DENSE URBAN, ELSE 0dB) 3 0 0 3 0 0a(h) = 0 IF mh= 1.5 -0.0009 0.0159 0.0159 -0.0009 0.0430 0.0430Builidng margin 21 12 0 21 12 0Vehicle loss 0 0 6 0 0 6Body Loss 2 2 2 2 2 2Fade margin 12.4 13.7 8 12.4 13.7 8Max. Isotropic Path Loss 162.0 162.0 162.0 162.0 162.0 162.0RADIUS (km) 1.0 1.8 7.5 0.4 0.9 4.5Cell AREA (km)2 2.7 8.4 146.6 0.5 2.3 52.2Cell AREA (mi)2 1.0 3.2 56.5 0.2 0.9 20.1


CEPT measurements results

Mean TXP = 27dBmMin TXP = 25dBm

Mean RX sens = -106dBmMin Rx Sens = -102 dBm

Comment on MS TX Pwr


AFP tool Models

Sophisticated models are available that use:• Terrain files at 10m, 25m, 50m resolution• advanced diffraction models for terrain• Clutter classes and clutter heights

But which is right and most accurate?

Tuning is essential• clutter classes need to be tuned• Sectors need tuning from drive test data• Scanned data is needed for tuning (not best server)

For AFP planning• tuned models are essential or• Mobile Measurement based files are needed


SECTORIZATION

Page 13


Segmentation of area in to cells• each radio covers small area•

frequencies now divided in to groups or assigned across geographical distances•

Hexagon shapes used to approximate cell coverage area

• Radius of Cell is given by R•

Distance between Co-Channel Cell centers is given by ‘D

- Drawback of cells is loss of trunking efficiencies

Basics


C/I is given by the ratio of Radius and Separation distance

Basics

∑=

−= N

iiD

1

4

-4RC/I Where -4 is the attenuation coefficient

MMQ4

4

RD

C/I ==

⎟⎠⎞

⎜⎝⎛

Where Q is the Interference Reduction Factor, M is the number of interferes

RCell

2323Area = Dcluster

2321Area =

⎟⎠⎞

⎜⎝⎛= ==

RD

RD

cell

cluster2

2

2

31

323

321

AreaAreaN Number of cells in cluster N

NRD 3= Reuse distance = D

Copyright ® 2006 | Proprietary and Confidential April 15, 2011 Page 16

Sectorization: Basic Concept

• Sectorization reduces the number of interferers• Reduced interference = closer reuse of frequencies• Closer reuse of frequencies = more capacity within same spectrum• More sectors = loss of trunking efficiencies

Omni 3-Sector 6-Sector


GSM – 6-Sector Capacities

RDQ /=

• Hexagon arrays used to model typical network• Classic formulas link Reuse Distance ‘D’ to

Site Radius ‘R’ and number of interferers ‘M’ to calculate Reuse factor ‘N’

• 6-Sector in GSM requires 18 channels for BCCH• Can increase capacity by 55%

( )MM

C/I3xNQ 24

==

• 6-Sector in GSM requires 18 channels for BCCH• Traditional approach can increase capacity by 55%

# Sectors#

InterferersReuse

"N" BCCH TCH TRX per Sector

Erlangs Per Sector

Erlangs per Site

Omni 1 7 7 7 33 6 32.8 32.83-Sectored 3 2 4 12 28 5 26.4 79.36-Sectored 6 1 3 18 22 4 20.1 120.9


C/I levels for Reuse SchemesCell Reuse Sectors 90% C/I (dB)

N = 12 Omni 20.8

N = 7 Omni 14.2

N = 4 Omni 8.3

N = 3 Omni 5.6

N = 1 Omni -5.7

N = 7 3 sector –

65 degree 20.8

N = 5 3 sector –

65 degree 16.2

N = 4 3 sector – 65 degree 15.0

N = 3 3 sector –

65 degree 12.5

N = 1 3 sector –

65 degree 2.7

N = 7 6 sector -

33 degree 24.9

N = 4 6 sector -

33 degree 19.4

N = 3 6 sector - 33 degree 16.7

N = 2 6 sector -

33 degree 12.4

N = 1 6 sector -

33 degree 7.8

Conditions: 3.8 mile cells, base antenna height = 100ft, lognormal shadowing standard deviation = 6.5dB.

Source – Bell Research Land-Mobile Radio System Engineering

• Simulations confirm that GSM requires 18BCCH for 6-sector

• Field deployments confirm this

6-Sector GSM requires increased BCCH counts for same C/I


Cell splitting is complex in order to maintain C/I.For a single sector it requires 3 new sites: 6 new sites for a complete site

What about Cell Splitting


HOW THE BSA IMPROVES SECTORIZATION

Page 20


Typical Network with Local Hot Spot

65o

BTS

Hot Sector

http://www.freewebs.com/stick_figure_animations/kungfu.gif






http://bbsimg.ngfiles.com/14/14568000/ngbbs4738f8125ddb8.gif



























Traditional narrow and mulit-beam

33o 33o

No coverage

Large Area of Overlap

BTS

Wasted Coverage





























Shaped Beam Advantage

Low Cusping LossMinimal Wasted Coverage

Narrow Area of Overlap

Bi-SectorArrayTM

The most effective solution for Higher Order Sectorization


































Drop and Insert SolutionMaximum flexibility for 4, 5

and 6-sector upgrades

Outperforms other antenna technologies

Lowest interference = maximum capacity


Transmit/ReceiveElements

Feed NetworkAnd ElevationBeamformer

Input Stage

Element Arrays:BSA has 4 columns

compared to conventional

antenna

Azimuth Beamformer(Butler Matrix)

TenXc Bi Sector Array Conventional 65°

Antenna


Bi-Sector Array Advantage

- A two-in-one antenna that allows 6-sector sites to be built on same footprint as a traditional 3-sector.- Uses same BCCH and TCH frequency allocation as a 3-sector. No increase in BCCH count. Same ICDM planning method as 3-sector- Little requirement for optimization on surrounding sites. No orientation changes to accommodate BSA. Tilt, frequency planning and Neighbour list assignment only required.- Allows for up to 2X times increase in capacity. Doubles the TRX count per sector.

Average Capacity Gain

Average Traffic Increase

Average Change in DCR

Change in HO Success Rate

Full 6-Sector Replacement

2.0 12% -18% 1.2%

Ad-hoc partial Sector Replacement

1.3 14% -3% 0.6%

-16 separate field trials - Average results before and after BSA installation


HOW TO DEPLOY THE BSA

Page 27


Max Capacity Estimates

MHz TRX Configuration

Site Erlangs Combiners Number of BSA

Antennas4.4 3/3, 3/3, 3/3 84 WBC 2:1 1, 1, 1

6.2 4/4, 4/4, 4/4 121 WBC 2:1 1, 1, 1

7.2 6/5, 6/5, 6/5 186 WBC 2:1 2, 2, 2

7.2 6/5, 6/5, 6/5 186 WBC 4:1 1, 1, 1

8.2 6/6, 6/6, 6/6 208 WBC 2:1 2, 2, 2

8.2 6/6, 6/6, 6/6 208 WBC 4:1 1, 1, 1


Recommendations

TenXc BSA antennas can be used to increase capacity of sites and support 24 TRX per site in both 4.4MHz and 6.2MHz allocations and up to 36 TRX in 8MHz allocations

4.4MHz 6.2MHz and higher

BCCH 9 ch

B2B BCCH allocations9 to 12ch Ad-hoc planning with AFP tool and mobile measurements

Ad-hoc BCCH plan with 12 to 14 channels and using AFP tools and mobile measurements

TCH 1/1 reuse and HSN and/or MAIO offsets

Ad-hoc TCH plan using AFP tool and mobile measurements


Planning Considerations

Two Fixed directional beams in one

- In planning tool each beam needs to be entered separately at +- 22 degrees deployed direction.

- Offsets can not be changed- Separate LEFT and RIGHT beam

patterns need to be assigned correctly.- Any mechanical tilt apply to both

sectors- Electrical tilt can be applied

independently – VET/RET products

Deployment Orientation

Left Orientation Right Orientation


Implementation Considerations

A D

E

B

C

F

Site Numbering Strategy

- Strict replacement strategy: A replaced by A&D, B by B&E and C by C&F

- Why?

- Need to allow for growth from 3 to 4, 5 and 6 Sectors- Minimize reconfiguration between 3 and 4, 5 and 6 sector sites- Maintains Sector statistics as much as possible- Allows for Back-to-Back (B2B) BCCH allocations if needed

A

BC


Neighbour Cell Planning Considerations

Sector Handover Candidate

A F, DD A, B

B D, E

E B, C

C E, F

F A,C

A D

E

B

C

F

Overall Strategy

Disable cross-site handovers: ‘A’should not be a candidate of ‘E’, etcRestrict HO to adjacent sectors especially if B2B BCCH is usedReuse existing 3-sector list: ‘Old list A’ should be used on both A and DOptimize once MS based measurements or drive testing is performed

A

BC


Implementation Considerations - 2

Item Requirement Check

Availability of space for additional cabinet for higher TRX Configuration.

2 or 3 Cabinets

Availability of Transmission Resources ( Additional E1) for higher TRX counts

2 E1 for 243 E1 for 36

Upgrading of power resources suitable for higher capacity configurations

As required

Feeder Lines to be planned for additional sectors. 2 Per Sector4 for 900/1800

Suitability of existing pole to replace existing antenna with TenXc antenna

5 to 12 cm mount

VSWR of all feeders and TenXC

antennas validation and readings meeting the specifications

<1.4 Required


BTS Cabinet Deployment Strategy

If BTS supports full 6-sector then single site with synchronization can be built

If BTS does not support 6-sector than ‘2’ 3-sector sites will be built. Synchronization only within the 3-sector sites

interleaved if 1/1 or 1/3 planning is usedNon-interleaved if ad-hoc TCH is used

Implementation Considerations - 3

A D

E

B

C

F

A D

E

B

C

FFull 6-sector

3-sectorinterleaved

3-sectornon-interleaved

A D

E

B

C

F


FREQUENCY PLANNING

Page 35


Frequency Planning Overview

GSM: 200Khz Channel8 Full Rate Timeslots (16 Half Rate timeslots)Multi-path protection is in built

Interleaving of 456 bit speech frames over 8 TimeslotsChannel coding - CRC, Block Code, ConvolutionaryTraining Sequences and Viterbi equalisers


No Hopping

F1F2

F1F2

Baseband HoppingTRX stays on frequency but timeslot moves#Freq = # TRX

F1 to N

F1 to NBaseband HoppingTRX changes frequency#Freq > # TRX

Frequency Planning Overview


0

2

4

6

8

10

12

14

16

1 2 3 4 8 12

C/I at 2%

FER

Number of Frequencies

Frequency Hopping C/I Performance

TU50

TU3

TU50 Rel

TU3 Rel

Frequency Diversity Gain

TU3= Typical Urban 3km/h (walking speed)TU50=Typical Urban 50km/h (medium speed vehicle)

Up to 6 dB of gain available from FH.

Gain Depends on both number of frequencies and type of environment

9 dB “Classical C/I” for GSM only exists in ideal conditions: fast moving mobiles or high hopping systems.


Frequency Planning

BCCH TCH

Ad-hoc channel planning

Ad-hoc channel planning

Fractional Reuse

BSIC Channel

Rules:-Maximise the separation distance

Channel HSN MAIO

Rules:-Maximise the separation distance

Rules:-Maximise hopping gain- Spread interference over many cells


Ad-Hoc Channel Planning

Page 40

MMQ4

4

RD

C/I ==

⎟⎠⎞

⎜⎝⎛

Remember this? To minimize the C/I we need to maximize D

Practically D is fixed by the number of channels; e.g. for 12 BCCH N=4.

NRD 3=

Use advanced AFP tools to optimize plan and create the best C/I, but..- Accuracy of tool depends on accuracy of the database- Accuracy of plan assumes a good approximate propagation model- Use of Mobile Measurements improves on tool performance as it

ceases to be geographical based problem and becomes a simple statistical problem


BCCH Planning Using B2B

Page 41

A D

E

B

C

F

For 3-sector sites all BCCH need to be unique as each sector is a neighbour to the others.

Not case for BSA sites – A and E can share same channel

High >30dB Front to Back ratio allows for protection across site

Why Do It?- Increases flexibility with in Frequency Plans- Allows for simpler upgrades from 3 to 6 sector within same BCCH count

Drawbacks?- Introduces C/I in to the site

A

BC


0

5

10

15

20

25

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20 21 22 23 24Number of BCCH CHannels

C/I

at 9

0%

Omni3 sector – 65 degree6 sector - 33 degreeBi Sector Arrays

Back to back with 9

channels

Ad-hoc 12 channel

Ad-hoc 16 channel

Channel Allocations

18 channel minimum for

standard 33 antennas


MAIO Planning

Page 43

Objective•

Avoid co-channel and adjacent channel interference within a sector when multiple TRX used•Avoid Co-channel and adjacent channel interference within a site.

MAL = 539 to 546MAIO = 0, 2, 5 HSN = XX


MAIO Planning

Page 44

Objective•

Avoid co-channel and adjacent channel interference within a sector when multiple TRX used•Avoid Co-channel and adjacent channel interference within a site.

MAL = 539, 541, 543..MAIO = 0, 1, 2 HSN = XX


TCH Planning for BSA11-channel plan

Cell HSN MAIO DCHNO

SHI0051 46 0 2 4 34 35 36 37 38 39 40 41 42 43 44

SHI0054 46 6 8 10 35 35 36 37 38 39 40 41 42 43 44

SHI0052 46 1 5 9 36 35 36 37 38 39 40 41 42 43 44

SHI0055 46 0 2 4 37 35 36 37 38 39 40 41 42 43 44

SHI0053 46 6 8 10 38 35 36 37 38 39 40 41 42 43 44

SHI0056 46 3 5 7 39 35 36 37 38 39 40 41 42 43 44

SHI0051 46 0 3 6 34 35 36 37 38 39 40 41 42 43 44

SHI0052 46 2 5 8 34 35 36 37 38 39 40 41 42 43 44

SHI0053 46 4 7 10 34 35 36 37 38 39 40 41 42 43 44

A D B E C F0 x x1 x2 x x3 x4 x x5 x x6 x x7 x8 x x9 x

10 x x

A B C0 x12 x3 x4 x5 x6 x7 x8 x9

10 x


TCH Planning for BSA

9-channel planCell HSN MAIO DCHNO

SHI0051 46 0 3 6 34 35 36 37 38 39 40 41 42 43 44SHI0054 46 2 5 8 35 35 36 37 38 39 40 41 42 43 44SHI0052 46 1 4 7 36 35 36 37 38 39 40 41 42 43 44SHI0055 46 0 3 6 37 35 36 37 38 39 40 41 42 43 44SHI0053 46 2 5 8 38 35 36 37 38 39 40 41 42 43 44SHI0056 46 1 4 7 39 35 36 37 38 39 40 41 42 43 44

SHI0051 46 0 3 6 34 35 36 37 38 39 40 41 42 43 44SHI0052 46 1 4 7 34 35 36 37 38 39 40 41 42 43 44SHI0053 46 2 5 8 34 35 36 37 38 39 40 41 42 43 44

A D B E C F

0 X X1 X X2 X X3 X X4 X X5 X X6 X X7 X X8 X X

A B C0 X1 X2 X3 X4 X5 X6 X7 X8 X


TCH Planning for BSA

SHI0051 46 0 3 6 34 35 36 37 38 39 40 41 42 43 44SHI0052 46 1 4 7 34 35 36 37 38 39 40 41 42 43 44SHI0053 46 2 5 8 34 35 36 37 38 39 40 41 42 43 44

A B C0 X1 X2 X3 X4 X5 X6 X7 X8 X

9-channel plan - opt 2Cell HSN MAIO DCHNO

SHI0051 46 0 3 6 14 15 16 17 18 19 20 21 22SHIB051 10 2 5 8 14 15 16 17 18 19 20 21 22SHI0052 46 1 4 7 14 15 16 17 18 19 20 21 22SHIB052 10 0 3 6 14 15 16 17 18 19 20 21 22SHI0053 46 2 5 8 14 15 16 17 18 19 20 21 22SHIB053 10 1 4 7 14 15 16 17 18 19 20 21 22

A D B E C F

0 X X1 X X2 X X3 X X4 X X5 X X6 X X7 X X8 X X


Issues in Field

•

Mechanical down tilt brackets incorrectly installed- Pl see the photo for wrong installation seen in one of the live sites

• Feeder connectors not tightened• VSWR Sweep tests should be used on all sites

• Crossed Feeders•

Correct BCCH transmission should be confirmed on all installations


Field deployments and Examples


NE CircleAnalysis

43 sites deployed as BSA in Circle

Maximum traffic carried by 3-sector sites is 159 Erlangs

Maximum traffic carried by BSA sites is 288 Erlangs

a 1.8 times increase in capacity.

23% of BSA sites carry more than the maximum capacity

Traffic Carried Per Site

050

100150200250300350

0.00% 20.00% 40.00% 60.00% 80.00% 100.00%Percentile

Erla

ngs

Non-BSA Sites

BSA Sites


BSA Sites have a lower drop call rate than the network average

The BSA sites have the same handover performance as other sites.

NE CircleAnalysis


Shillong Area


Shillong KPI

•

7 sites are deployed in Shillong•

Frequency replanning and site audit carried out in Dec 09 to improve performance

•

10 channel BCCH and 11 channel TCH plan using 1/1 hopping used

•

TCH drop call rates have reduced from over 5% to below 3% for the area. SDCCH DCR are now around 1.0%

•

Handover success rates fell during the optimization period for the 10 channel BCCH plan as optimization was performed but have now improved to over 90%: the 10 channel BCCH is operating better than the previous 12 channel plan

0.00

500.00

1000.00

1500.00

2000.00

2500.00

3000.00

3500.00

20‐Nov

‐09

22‐Nov

‐09

24‐Nov

‐09

26‐Nov

‐09

28‐Nov

‐09

30‐Nov

‐09

02‐Dec

‐09

04‐Dec

‐09

06‐Dec

‐09

08‐Dec

‐09

10‐Dec

‐09

12‐Dec

‐09

14‐Dec

‐09

16‐Dec

‐09

18‐Dec

‐09

20‐Dec

‐09

22‐Dec

‐09

24‐Dec

‐09

26‐Dec

‐09

28‐Dec

‐09

30‐Dec

‐09

01‐Jan

‐10

03‐Jan

‐10

05‐Jan

‐10

07‐Jan

‐10

09‐Jan

‐10

11‐Jan

‐10

13‐Jan

‐10

15‐Jan

‐10

17‐Jan

‐10

19‐Jan

‐10

21‐Jan

‐10

23‐Jan

‐10

25‐Jan

‐10

27‐Jan

‐10

29‐Jan

‐10

31‐Jan

‐10

BH Erlangs

Traffic Erlangs

FR

Total

0.00%

1.00%

2.00%

3.00%

4.00%

5.00%

6.00%

7.00%

20‐Nov

‐09

22‐Nov

‐09

24‐Nov

‐09

26‐Nov

‐09

28‐Nov

‐09

30‐Nov

‐09

02‐Dec

‐09

04‐Dec

‐09

06‐Dec

‐09

08‐Dec

‐09

10‐Dec

‐09

12‐Dec

‐09

14‐Dec

‐09

16‐Dec

‐09

18‐Dec

‐09

20‐Dec

‐09

22‐Dec

‐09

24‐Dec

‐09

26‐Dec

‐09

28‐Dec

‐09

30‐De c

‐09

01‐Jan

‐10

03‐Jan

‐10

05‐Jan

‐10

07‐Jan

‐10

09‐Jan

‐10

11‐Jan

‐10

13‐Jan

‐10

15‐Jan

‐10

17‐Jan

‐10

19‐Jan

‐10

21‐Jan

‐10

23‐Jan

‐10

25‐Jan

‐10

27‐Jan

‐10

29‐Jan

‐10

31‐Jan

‐10

Drop Call Rates

SDCCH

TCH

70.00%

75.00%

80.00%

85.00%

90.00%

95.00%

20‐Nov

‐09

22‐Nov

‐09

24‐Nov

‐09

26‐Nov

‐09

28‐Nov

‐09

30‐Nov

‐09

02‐Dec

‐09

04‐Dec

‐09

06‐Dec

‐09

08‐Dec

‐09

10‐Dec

‐09

12‐Dec

‐09

14‐Dec

‐09

16‐Dec

‐09

18‐Dec

‐09

20‐Dec

‐09

22‐Dec

‐09

24‐Dec

‐09

26‐Dec

‐09

28‐Dec

‐09

30‐De c

‐09

01‐Jan

‐10

03‐Jan

‐10

05‐Jan

‐10

07‐Jan

‐10

09‐Jan

‐10

11‐Jan

‐10

13‐Jan

‐10

15‐Jan

‐10

17‐Jan

‐10

19‐Jan

‐10

21‐Jan

‐10

23‐Jan

‐10

25‐Jan

‐10

27‐Jan

‐10

29‐Jan

‐10

31‐Jan

‐10

Hando

ver Success Rate

Handover Performance


Powerwave Antennas Before

Aspen Site ConfigurationAspen Site Configuration is: GSM 850/1900 and UMTS 850/1900, has

4 Ericsson GSM BTS’s

and 2 Lucent Node B BTS’s.

TenXc BSA Antennas

Aspen Site Configuration:4 layers, 24 sectors

15th July GSM cut over to BSA

19th July UMTS cut over to BSA


Aspen Current Configuration

Page 55

Each Sector consists of- 1 UMTS carriers at 850- 1 UMTS carriers at 1900- 8 GSM TRX at 850- 6 GSM TRX at 1900

Over 1000E Capacity in one site !


UMTS Voice Summary

Page 56

UMTSTraffic is increased by 28% .Increased traffic overall – but 850 carries moreDCR are 66% improved – implies improved coverage or

Ec/IoCall set up remains at 99%SHO% - area in handover is stable and is 3% lower,

increase in SHO% overhead due to COU4236C/ZIncreased Mean Hold Time of 6%, 29% for 850UMTS –

implies much improved link quality or coverage

0.0

1.0

2.0

3.0

4.0

5.0

6.0

7.0

8.0

04‐Jul

06‐Jul

08‐Jul

10‐Jul

12‐Jul

14‐Jul

16‐Jul

18‐Jul

20‐Jul

22‐Jul

24‐Jul

26‐Jul

28‐Jul

30‐Jul

01‐Aug

03‐Aug

05‐Aug

07‐Aug

09‐Aug

11‐Aug

13‐Aug

15‐Aug

17‐Aug

19‐Aug

21‐Aug

23‐Aug

Drop Call Rate

UMTS BH Drop Call Rate

850

1900

0

200

400

600

800

1000

1200

1400

04‐Jul

06‐Jul

08‐Jul

10‐Jul

12‐Jul

14‐Jul

16‐Jul

18‐Jul

20‐Jul

22‐Jul

24‐Jul

26‐Jul

28‐Jul

30‐Jul

01‐Aug

03‐Aug

05‐Aug

07‐Aug

09‐Aug

11‐Aug

13‐Aug

15‐Aug

17‐Aug

19‐Aug

21‐Aug

23‐Aug

Erlangs Carried

UMTS Erlangs Carried per Day

850

1900

UMTS Voice

Call Set up (%)

CS DROPS % MHT Erlang SHO (%)SHO%

Overhead

1900 Before 99.8 1.5 38.9 426.7 26.0 53.4 After 99.6 0.5 34.2 519.6 23.0 54.3 Gain -0.3% 66.9% -12.1% 21.8% 11.5% -1.7%

850 Before 98.8 3.1 30.9 773.2 22.3 46.3 After 99.3 1.1 39.7 1,015.9 23.6 52.4 Gain 0.5% 65.4% 28.6% 31.4% -6.1% -13.2%

Site Before 99.3 2.3 34.9 1,199.9 24.1 49.8 After 99.4 0.8 37.0 1,535.6 23.3 53.3 Gain 0.1% 65.9% 5.9% 28.0% 3.3% -7.0%


GSM Data Summary

Page 57

GSMOnly 850 uses EDGE1900 Payload increased but 850 Payload fell by 20%Big improvement in Throughput – 47% for GSM850Improved TBF failure rate – over 97% reduction

0

1000

2000

3000

4000

5000

6000

7000

8000

04‐Jul

06‐Jul

08‐Jul

10‐Jul

12‐Jul

14‐Jul

16‐Jul

18‐Jul

20‐Jul

22‐Jul

24‐Jul

26‐Jul

28‐Jul

30‐Jul

01‐Aug

03‐Aug

05‐Aug

07‐Aug

09‐Aug

11‐Aug

13‐Aug

15‐Aug

17‐Aug

19‐Aug

21‐Aug

23‐Aug

MBytes

GPRS/EDGE Data Payload

1900GSM

GSM

850GSM

0

20

40

60

80

100

120

140

160

Kbits/s

GPRS/EDGE Throughput

1900GSM

GSM

850GSM

EDGE/GPRS ‐ DATA

Total DataVol (KBytes)

Network Throughput (kbits/s)

TBF Failure Rate (%)

1900 Before 77,090 29 0.5 After 108,615 31 0.1 Gain 40.9% 6.5% 88.1%

850 Before 2,888,483 87 4.1 After 2,327,358 128 0.1 Gain -19.4% 47.0% 97.6%

Site Before 2,965,574 58 2.3 After 2,435,972 79 0.1 Gain -17.9% 36.9% 96.6%


Proprietary & Confidential

Mec

hani

cal

Ele

ctri

cal

Frequency Range (MHz) 1710–1880 1850–1990 1920–2170

Azimuth Beamwidth(s) (-3dB) 31°

Asym 29°

Asym 28°

Asym

Elevation Beamwidth

(-3dB) 8.0° 7.2° 6.5°

Elevation Sidelobes

(Upper) < -18 dB

Gain 18.7 dBi 19.2 dBi 19.8 dBi

Polarization ±

45°

Slant

VSWR <1.4:1

Front-to-Back Ratio > 30 dB

X-Pol

Port-to-Port Isolation > 30 dB

Electrical Downtilt 2°

to 10°

Input Impedance 50 Ohms

Input Power 300 Watts CW

Passive Intermodulation ≤

-150 dBc

(2 x 20W)

Lightning Protection DC Ground

Dimensions (LxWxD) 137 x 39 x 16 cm (54 x 16 x 6 inches)

Survival Wind Speed > 193 km/hr (> 120 mph)

Front Wind Load 730 N (164 lbs) @ 161 kph

(100 mph)

Side Wind Load 166 N (37 lbs) @ 161 kph

(100 mph)

Equivalent Flat Plate Area 0.5 m2

(5.8 ft2)

Weight (without Mounting) 18.8 kg (41 lbs)

Mounting Pole (OD) 5-12 cm (2-5 inches)

Azimuth

Elevation 4°

Patterns are based on measured performance at 1920 MHz.

Rear View

Wideband Bi-Sector Array: BSA-W65-20V210-02

Documents

TenXc BSA Planning and Deployment