umts antenna config

Proprietary and Confidential

UMTS Antenna Configuration UMTS Antenna Configuration ScenarioScenario

Proprietary and Confidential Slide 2

Scenario 1: GSM UntouchedScenario 1: GSM Untouched

Existing Configuration:– 3 dual pol antennas (72 inches); antenna count can be increased– 2 lines per antenna; additional lines can be installed– 2 TMAs– No RET

Proposed Configuration:– Add one new AWS antenna (dual pol) with RET for UMTS (4th antenna)– Add two new feeder cables for UMTS and RET cable– Add new AWS twin TMA


Scenario 1: GSM Untouched Scenario 1: GSM Untouched (continued)(continued)

Pros:– No impact on GSM as the system will be untouched (except for some possible

minor movement of one antenna depending on existing arrangement)– Easier implementation– Azimuth and tilt can be independently adjusted for both GSM and UMTS

Cons:– Additional rent cost for the extra TMA and antenna for UMTS– Additional active elements means more points of failure


GSM Untouched: Existing GSM Untouched: Existing ConfigurationConfiguration


GSM Untouched : Proposed GSM Untouched : Proposed ConfigurationConfiguration

Actuator

Most Preferre

d

Least Preferred

GSM Untouche

d


Scenario 2: RET For AllScenario 2: RET For All

Existing Configuration:– 3 dual pol antennas (72 inches); antenna count can be increased– 2 lines per antenna; additional lines can be installed– 2 TMAs– No RET

Proposed Configuration (1): – Add one new AWS antenna (dual pol) with RET for UMTS (4th antenna)– Replaced old PCS antennas with new antennas with RET capability– Add two new feeder cables for UMTS and RET cables– Replace existing TMAs with twin AWS/PCS TMAs


Scenario 2: RET For All (continued)Scenario 2: RET For All (continued)

Pros:– GSM gets newer antennas and RET capability– GSM gets new TMAs– Azimuth and tilt can be independently adjusted for both GSM and UMTS

Cons:– Cost for replacing GSM antennas and TMAs– Additional rent cost for the extra TMA and antenna for UMTS


RET For All: Existing ConfigurationRET For All: Existing Configuration


RET For All: Proposed ConfigurationRET For All: Proposed Configuration

Actuators

Most Preferre

d

Least Preferred

RET For ALL


Scenario 3: I Love QuadsScenario 3: I Love Quads

Existing Configuration:– 3 dual pol antennas (72 inches); antenna count cannot be increased– 2 lines per antenna; additional lines can be installed– 2 TMAs– No RET

Proposed Configuration:– Replace all antennas with quad pol AWS with RET capability– Replace existing TMAs with new AWS/PCS twin TMAs– Add two new feeder cables for UMTS and RET cables


Scenario 3: I Love Quads (continued)Scenario 3: I Love Quads (continued)

Pros:– Same antenna count (a plus for zoning, leasing and structural aspects)– RET is separate between GSM and UMTS sharing the same quad pol antenna

(independent tilt adjusted for GSM and UMTS)

Cons:– Azimuth cannot be independently adjusted for the antenna where GSM and

UMTS is located


I Love Quads: Existing ConfigurationI Love Quads: Existing Configuration


Actuators

I Love Quads: Proposed ConfigurationI Love Quads: Proposed ConfigurationMost

Preferred

Least Preferred

I Love Quads


Scenario 4: No Room To GrowScenario 4: No Room To Grow

Existing Configuration:– 2 quad pol antennas (72 inches); antenna count cannot be increased– 4 lines per antenna (no additional lines can be added)– 2 TMAs– No RET

Proposed Configuration:– Replace all existing antennas with quad pol AWS with RET capability– Replace existing TMAs with new AWS/PCS twin TMAs– Combine GSM TRXs to free up 2 feeder cables for UMTS (ensure even

combining of GSM TRXs)

Note: This scenario is applicable also for existing configuration using dual pol antennas and no new lines can be added


Scenario 4: No Room To Grow Scenario 4: No Room To Grow (continued)(continued)

Pros:– UMTS can be deployed on the site– New antennas for GSM– New TMAs for GSM– Independent tilt and azimuth adjustment for both GSM and UMTS

Cons:– Additional loss in GSM (due to combining)– Increased cost to offset additional loss due to combining if MCPAs are used– Loss of space diversity in GSM


No Room To Grow : Existing No Room To Grow : Existing ConfigurationConfiguration


No Room To Grow : Proposed ConfigurationNo Room To Grow : Proposed Configuration

Actuators

Most Preferre

d

Least Preferred

No Room To Grow


Scenario 5: “Two” Few LinesScenario 5: “Two” Few Lines

Existing Configuration:– 1 dual pol antenna (72 inches); antenna count cannot be increased– 2 lines per antenna (no additional lines can be added)– 2 TMAs– No RET

Proposed Configuration:– Replace all existing antennas with dual pol AWS with RET capability– Replace existing TMAs with new Diplexer/TMA unit– Diplex GSM and UMTS to fit into 2 lines


Scenario 5: “Two” Few Lines Scenario 5: “Two” Few Lines (continued)(continued)

Pros:– UMTS can be deployed on the site– New antenna for GSM– New TMA for GSM– Diplexing option is cheaper than MCPA

Cons:– Additional loss in GSM and UMTS (due to diplexing but lower than combining)– Possible intermodulation product at certain frequency pairs– Azimuth and tilt cannot be independently adjusted for both GSM and UMTS


““Two” Few Lines: Existing Two” Few Lines: Existing ConfigurationConfiguration


““Two” Few Lines: Proposed Two” Few Lines: Proposed ConfigurationConfigurationMost

Preferred

Least Preferred

“Two” Few Lines


Summary (Level of Preference)Summary (Level of Preference)

Least Preferred

Most Preferred

GSM

U

nto

uch

ed

RET F

or

All

I Lo

ve Q

uads T

wo F

ew

Lin

es

No R

oom

To G

row

umts antenna config

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