umts antenna config
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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
Proprietary and Confidential Slide 3
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
Proprietary and Confidential Slide 4
GSM Untouched: Existing GSM Untouched: Existing ConfigurationConfiguration
Proprietary and Confidential Slide 5
GSM Untouched : Proposed GSM Untouched : Proposed ConfigurationConfiguration
Actuator
Most Preferre
d
Least Preferred
GSM Untouche
d
Proprietary and Confidential Slide 6
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
Proprietary and Confidential Slide 7
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
Proprietary and Confidential Slide 8
RET For All: Existing ConfigurationRET For All: Existing Configuration
Proprietary and Confidential Slide 9
RET For All: Proposed ConfigurationRET For All: Proposed Configuration
Actuators
Most Preferre
d
Least Preferred
RET For ALL
Proprietary and Confidential Slide 10
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
Proprietary and Confidential Slide 11
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
Proprietary and Confidential Slide 12
I Love Quads: Existing ConfigurationI Love Quads: Existing Configuration
Proprietary and Confidential Slide 13
Actuators
I Love Quads: Proposed ConfigurationI Love Quads: Proposed ConfigurationMost
Preferred
Least Preferred
I Love Quads
Proprietary and Confidential Slide 14
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
Proprietary and Confidential Slide 15
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
Proprietary and Confidential Slide 16
No Room To Grow : Existing No Room To Grow : Existing ConfigurationConfiguration
Proprietary and Confidential Slide 17
No Room To Grow : Proposed ConfigurationNo Room To Grow : Proposed Configuration
Actuators
Most Preferre
d
Least Preferred
No Room To Grow
Proprietary and Confidential Slide 18
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
Proprietary and Confidential Slide 19
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
Proprietary and Confidential Slide 20
““Two” Few Lines: Existing Two” Few Lines: Existing ConfigurationConfiguration
Proprietary and Confidential Slide 21
““Two” Few Lines: Proposed Two” Few Lines: Proposed ConfigurationConfigurationMost
Preferred
Least Preferred
“Two” Few Lines
Proprietary and Confidential Slide 22
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
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