long haul multi-gigabit microwave: a new approach
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LONG HAUL MULTI-
GIGABIT MICROWAVE:
A NEW APPROACH
An Advanced Technology Webinar
From Aviat Networks
14 August 2013
AVIAT NETWORKS
WHAT WE WILL COVER TODAY
• Typical Trunking Microwave characteristics
• Split-Mount Trunking Microwave Solution
• Reducing Trunking Total Cost of Ownership
• Conclusions and Q+A
• The drivers for Trunking Microwave applications
• The Impact of Tower Outsourcing on TCO
TRAFFIC EXPLOSION
Commercial
LTE Network
Launches
(cumulative)
Source: GSA
How to meet expanding capacity demands?
AVIAT NETWORKS
In many cases fiber is
just not an option:
Too expensive
Not practical
Too vulnerable
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Long Haul, or
Trunking Microwave
has formed the
backbone of
networks around the
world.
AVIAT NETWORKS
HIGH CAPACITY, GUARANTEED
• Multi-channel microwave systems are
key for providing guaranteed high
capacity links for long-haul and
aggregation applications
• New techniques can help, but don’t fit
the application:
• Higher modulations >1KQAM
• MIMO
• Ethernet Optimization, eg: Header
Compression, etc
• Asymmetric links
ASSURED CAPACITY EXPANSION
REDUCE SITE COMPLEXITY SIMPLIFY
DRAMATICALLY LOWER TCO
SAFEGUARD
SAVE
AVIAT NETWORKS
Antenna
Waveguide
Indoor Unit
ALL-INDOOR TRUNK RADIOS
• All-indoor trunking radios were originally
designed for N+1 SDH applications
• Supported features generally lag the rest
of the microwave market by >12 months
• Consist of a full equipment rack, with
additional clearance needed for
waveguide connections
• Connected to antenna(s) by semi-rigid,
elliptical waveguide – requires
pressurization, dehydration and regular
maintenance
AVIAT NETWORKS
4 Gbit/s
2 Gbit/s
3 Gbit/s
1 Gbit/s
40 GHz 30 GHz 20 GHz 10 GHz
All-Indoor
Trunking
AVIAT NETWORKS
4 Gbit/s
2 Gbit/s
3 Gbit/s
1 Gbit/s
40 GHz 30 GHz 20 GHz 10 GHz
Most effective for high-
capacity applications
between 2 and 4 Gbit/s
All-Indoor
Trunking
PROBLEM IS,
TRUNKING RADIOS ARE BIG…
REALLY BIG.
SO YOU’LL
NEEDS ONE
OF THESE…
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ALONG WITH
A LARGE
GENERATOR
(OR TWO)…
AND A LOT
OF FUEL
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AND ALSO
ONE OR
MORE OF
THESE
BEASTS…
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SPLIT-MOUNT ACCESS RADIOS
• Split-mount access radios can be used
for high capacity applications
• Usually much more cost effective than
indoor trunking radios
• Compact indoor unit, suitable for
installation in outdoor cabinet
• Simple coax IDU-ODU connection
• However, combining multiple channels
using couplers introduces significant
path losses
Antenna
Coupler
ODU
Coax
Indoor Unit
AVIAT NETWORKS
4 Gbit/s
2 Gbit/s
3 Gbit/s
1 Gbit/s
40 GHz 30 GHz 20 GHz 10 GHz
Split-Mount
Access
AVIAT NETWORKS
4 Gbit/s
2 Gbit/s
3 Gbit/s
1 Gbit/s
40 GHz 30 GHz 20 GHz 10 GHz
Split-Mount
Access
Most effective
for access
applications
<1Gbit/s
AVIAT NETWORKS
Antenna
Waveguide
Coax
Indoor Unit
OBU
ODU
SPLIT-MOUNT TRUNKING RADIOS
• Combines the best of both worlds
• Environmentally sealed OBU, containing
channel-specific filters and branching
• Low-loss combining of 4x ODUs onto a
single- or dual-polarized antenna
• Mounted close to antenna – no
waveguide loss
• No pressurization needed
• ODUs easily removed and replaced for
maintenance
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4 Gbit/s
2 Gbit/s
3 Gbit/s
1 Gbit/s
40 GHz 30 GHz 20 GHz 10 GHz
Combining the best
features of indoor
trunking and split-
mount access Split-
Mount
Trunking
SO THAT THIS…
CAN EASILY FIT INTO ONE
OF THESE…
OR EVEN THIS…
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ANOTHER STEP
ALONG THE
PATH TO
SUSTAINABILITY
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SYSTEM GAIN COMPARISON
Split-Mount
Trunking
All-Indoor
Trunking
Split-Mount
Access
Tx Power Output dBm 29.5 31 28
Rx Threshold (10-6 BER) dBm -71.5 -67 -70
Branching/Coupler Loss dB 7.5 6.5 14
Antenna connection loss dB 1 6 1
System Gain dB 92.5 85.5 (-7dB) 83 (-9.5dB)
7 dB Advantage = one full antenna size per link
* Based upon system configuration for 7GHz / 28MHz / 256QAM / 4+0 ACCP, No SD
AVIAT NETWORKS
PURCHASE PRICE
Installation
Maintenance
Training
Upgrades
Spectrum fees
Power usage
Tower costs
Air Conditioning costs
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TCO and other
OPEX drivers rated
highest, above
purchase price
1 = most important
VENDOR SELECTION CRITERIA
Microwave Strategies and Vendor Leadership:
Global Service Provider Survey, July 29, 2013
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INFRASTRUCTURE
OUTSOURCING/SHARING
• Network outsourcing or
sharing becoming common for
operators seeking to reduce
costs and focus operations
• Active - spectrum, switches,
antenna, etc
• Passive - tower, shelter,
power supply, batteries,
aircon, etc)
• Backhaul – leased capacity
(over fiber and/or microwave)
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TCO COSTS - EXAMPLE CAPEX (Initial)
Microwave Equipment Price
Spares
CAPEX (Recurring)
S/W Upgrades for Capacity Expansion
OPEX (Initial)
LOS and Site Survey
Site Development and Preparation
Design (engineering services)
Installation & commissioning
Field corrective maintenance
Repair and return (MLA fees)
Spectrum License (Initial Free)
OPEX (Recurring)
Spectrum License Annual Fee
Tower lease (x' antenna)
Power, Cooling and Other Maintenance
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TCO SAVINGS BY REDUCING ANTENNA SIZE
0 10,000 20,000 30,000 40,000
10
8
6
4
3O
rig
inal A
nte
nn
a D
iam
ete
r, f
t
5 Year TCO Saving, USD
The larger the antenna, the bigger TCO Savings
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MICROWAVE TCO - 5 LINKS, INCLUDING TOWER
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MICROWAVE TCO - 1 LINK, TOWER EXCLUDED
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MICROWAVE TCO - 1 LINK, WITH LEASED TOWER
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MICROWAVE TCO - 1 LINK, WITH LEASED TOWER
CAPEX IS ONLY A
MINOR CONTRIBUTOR
FOCUS ON OPEX IS
MUCH MORE
IMPORTANT!
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COMPARATIVE TCO ANALYSIS
CAPEX
OPEX
TCO
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• Major drivers:
• Antennas size and number
• Site footprint (container versus a
cabinet)
• Power consumption
• Air conditioning
COMPARATIVE TCO ANALYSIS
Up to 30% TCO Saving with Split-Mount Trunking
REDUCE SITE COMPLEXITY SIMPLIFY
• Site cabinets, instead of shelters
• Reduced site power needs
• Smaller antennas
• Reduced tower loading
• No waveguide or pressurization
DRAMATICALLY LOWER TCO SAVE
• No need for expensive shelters
• Lower equipment CAPEX
• Higher system performance
• Site running costs slashed
• Smaller antennas = lower tower lease
charges
ASSURED CAPACITY EXPANSION SAFEGUARD
• Simple capacity upgrades
• Guaranteed capacity
• Take advantage of the latest radio and
Carrier Ethernet features
• Common platform with access radio
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• New Split-Mount Trunking Solution
• Outdoor Branching Unit (OBU)
• ODU600T high performance ODUs
• High system gain
• Simple sparing (one ODU per band)
• Now shipping in frequency bands from
5 to 11 GHz worldwide
AVIAT STR 600
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IN CONCLUSION
• Split Mount Trunking combines the best of both worlds
• Ultra-high capacity links with the convenience of split-mount
• Enables dramatically lower costs
• Optimize assets in preparation for tower outsourcing
• Guaranteed capacity without compromise
SIMPLIFY, SAVE, SAFEGUARD
AVIAT NETWORKS
Questions?
Thankyou…
W W W . A V I A T N E T W O R K S . C O M
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