Download - LONG HAUL MULTI-GIGABIT MICROWAVE: A NEW APPROACH

LONG HAUL MULTI-

GIGABIT MICROWAVE:

A NEW APPROACH

An Advanced Technology Webinar

From Aviat Networks

14 August 2013

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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?

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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.

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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

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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

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4 Gbit/s

2 Gbit/s

3 Gbit/s

1 Gbit/s

40 GHz 30 GHz 20 GHz 10 GHz

All-Indoor

Trunking

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4 Gbit/s

2 Gbit/s

3 Gbit/s

1 Gbit/s


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

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4 Gbit/s

2 Gbit/s

3 Gbit/s

1 Gbit/s


Split-Mount

Access

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4 Gbit/s

2 Gbit/s

3 Gbit/s

1 Gbit/s


Split-Mount

Access

Most effective

for access

applications

<1Gbit/s

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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


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

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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

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Questions?

Thankyou…

W W W . A V I A T N E T W O R K S . C O M