1. This document is offered compliments of
BSP Media Group. www.bspmediagroup.com
All rights reserved.

2. Tried and Tested Best Practices for the
Implementation of LTE
Philip Sorrells – VP Strategic Marketing - Wireless
PRIVATE AND CONFIDENTIAL © 2013 CommScope, Inc
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3. • 100M subscribers – 5.9B
to go!!
• Acceptance Cycle Time
• Global Evolution
PRIVATE AND CONFIDENTIAL © 2013 CommScope, Inc
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4. What Limits LTE???
• Noise!!!
• Increase radiated power
• Small handover areas (less
than 20% design goal)
• Cell Edge
Required SNIR for Full Data Rate
Close to the radio users
experience better data rates.
The challenge is managing noise
so users at the CELL EDGE have
a Great Experience
(Rel-99)
PRIVATE AND CONFIDENTIAL © 2013 CommScope, Inc
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5. Five Key Strategies
• Noise Management
• RF Sector Control
• Network Modernization
• Backhaul
• In Building and Venue
PRIVATE AND CONFIDENTIAL © 2013 CommScope, Inc
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6. Considerations Impacting Planning
•Signal Strength vs SNR
•Grid lines tend to devolve
•Ideal Azimuths may vary
Weight and
Wind
Loading
Complexity
Reliability
•Performance Specs
•Age
5
PRIVATE AND CONFIDENTIAL © 2013 CommScope, Inc
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7. Shannon’s Law
The focus of future
technology
enhancements should
be on improving system
performance aspects
that improve and
maximize the
experienced SNRs in
the system.
Peter Rysavy of Rysavy Research,
Data Capabilities: GPRS to
HSDPA and Beyond, 3G Americas,
September 2005
2G – Voice
PRIVATE AND CONFIDENTIAL © 2013 CommScope, Inc
4G – Data
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8. Find and Eliminate Interference
Co-channel Interference
PRIVATE AND CONFIDENTIAL © 2013 CommScope, Inc
Adjacent channel Interference
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9. Avoid PIM (Passive Intermodulation)
• “Unwanted” signals created
by “nonlinearities”
•
• High Quality Equipment
• Careful Frequency Planning
Clear Sky
-123 dBm (-166 dBc)
Person nearby with phone,
keys, adapters, badge
-94 dBm (-137 dBc)
• Considerate Installation
Point At Fence
-102 dBm (-145 dBc)
PRIVATE AND CONFIDENTIAL © 2013 CommScope, Inc
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10. Interference Reduction - Antenna Selection
Initial 90 Deg Panel*
Increased Cell Overlap reduces the SCINR (Quality) of the system
and thus throughput experience by the end user!
Initial 65 Deg Panel*
Technology
GSM
9-21
Depended on # of BCCH/TCH channels available for
use
UMTS/CDMA
Example 65 Deg LP*
Permitted
Cell
Overlap
3-4
Soft Handover (Active Set Size)
LTE
2-3
1 Ideally (No Soft Handover)
Comments
* Typical horizontal BW antenna
patterns from initial deployments
of GSM/UMTS
PRIVATE AND CONFIDENTIAL © 2013 CommScope, Inc
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11. Network optimization
Reducing site-to-site interference
Downtilt (
°)
8 7
6
5
Downtilt (
°)
0
1
2
3
0
1
2
3
4
4
• Boresite Pointing Adjustment
PRIVATE AND CONFIDENTIAL © 2013 CommScope, Inc
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6
7 8
• Beam Tilting
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12. Sector Sculpting
• Faster Roll off = Less interference
Sector Split
• More Sectors – Better Density
• Extends value of existing cells
Six-Sector Site
• Fast and easy deployment
5-Beam models available in
698–894 MHz or 1710–2170 MHz
5-BEAM
PRIVATE AND CONFIDENTIAL © 2013 CommScope, Inc
9-BEAM
2x9-Beam model available in
1710–2170 MHz
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13. The Challenge – Overcoming Complexity
Network Modernization
• Multiple spectrum bands
• Multiple Technologies
• Protecting your current system
• Future Ready
• Time to market
PRIVATE AND CONFIDENTIAL © 2013 CommScope, Inc
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14. Co Siting - Ideally, any solution should……
• Minimize weight, wind load on
already straining towers and roofs
• Provide the performance required to
justify the investment
• Reduce risks of “craft’ related
installation errors
• Be fast and easy to upgrade and
maintain
• Be repeatable and scalable
PRIVATE AND CONFIDENTIAL © 2013 CommScope, Inc
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15. Co Siting– Multiband combining
Wideband
DualPol®
BSA
Twin
Diplexer
2100
UltraBand™
BSA
Quad
Triplexer
1800
1900
AWS
Value proposition
GSM
+
UMTS
 Zoning friendly
 Reduced wind load
 Essential on slim
profile monopoles
 Can save CAPEX
PRIVATE AND CONFIDENTIAL © 2013 CommScope, Inc
2300
2x4
LTE
850
700
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16. Co Siting - RRH
Radio Independent Approach
• Pre-assembled
• Standardized
• Flexible
• Maintainable
• Separate Optimized Antenna
PRIVATE AND CONFIDENTIAL © 2013 CommScope, Inc
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17. A Success Story
PRIVATE AND CONFIDENTIAL © 2013 CommScope, Inc
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18. Five Key Strategies
• Noise Management
• RF Sector Control
• Network Modernization
• Backhaul
• In Building and Venue
PRIVATE AND CONFIDENTIAL © 2013 CommScope, Inc
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19. The shape of things to come…
PRIVATE AND CONFIDENTIAL © 2013 CommScope, Inc
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20. Understanding the RF Path
Understanding the RF Path eBook—NEW
Now available for the iPad®, iPhone®, Android or Amazon Kindle Fire®.
Access the RF Path ebook today and enjoy:
Nearly 200 pages of insight on network concepts,
and installation techniques
•
•
•
•
•
•
•
•
Best Installation Practices
Antenna Application Theory
Best Co-Siting Practices
Transmission Systems
Passive Intermod Prevention
Backhaul Systems
Reliability
Distributed Antenna Systems
Available in app or digital format
PRIVATE AND CONFIDENTIAL © 2013 CommScope, Inc
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