Transcript WiBAS, Optimizing Network Performance!

Accelerating Small-Cell Deployment with a
Microwave Backhaul Service Layer
Kostas Ntagkounakis, PhD
Senior Marketing Eng.
23.04.2013
Macro-Cell Backhaul: Street-Level Perspective
Existing Macro-Cell
Backhaul Layer
Small-Cell & Backhaul
Service Layer
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Small-Cell Backhaul: Street-Level Perspective
Existing Macro-Cell
Backhaul Layer
Small-Cell & Backhaul
Service Layer
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Small-Cell Backhaul: Wireless Solutions
Perceived as Attractive Candidate Solutions:
 Sub 6 GHz, PtP/PtMP  NLOS
 60 GHz, PtP  High Capacity, Unlicensed
Perceived as Macro-Cell Backhaul Oriented:
 MW Technologies, PtP/PtMP
The Myths & Value of Microwave
MW: Area-Licensed Spectrum (26/28/32/42 GHz)
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MW Technology for Small-Cell Backhaul
Reality
 Has inappropriate form
factor and shape
 Can have attractive shape
& compact size
 Benefits from existing, fieldproven H/W and S/W
 Brings innovations
300x300x285mm
 Has high consumption,
and complex installation
 Antenna auto-alignment
 Zero-touch provisioning
 Low power consumption
Perception
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265x145x166mm
MW Radio Capacity for Small-Cell Backhaul
Reality
 Many channels, and
complex techniques are
required for sufficient
throughput
 MW spectrum is
congested and
expensive
Perception
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 There is plenty area licensed spectrum, with
an attractive licensing scheme
 Two channels are sufficient, for a Small-Cell
Backhaul network
 Links achieve up to 540 Mbit/s Full Duplex,
which is future-proof for LTE Small-Cells
 PtMP configuration can efficiently offer up to
2.2 Gbit/s, at aggregation sites
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Link Planning for Small-Cell Backhaul
Reality
 LOS is difficult to be
achieved in reality
 Requires complex RF
planning
Perception
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 A Multipoint, multi-hop architecture extends to
any location, maximizing the LOS connectivity
 Pursuing LOS connectivity is best-practice as
range, capacity and reliability are optimized!
 Near LOS may be possible for small radio paths
(i.e. link through vegetation)
 RF planning procedure is very simple and known
to operators (same as for macro-cell backhaul)
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MW for Small-Cell Backhaul
Perception
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Reality
Macro-Cell
Technology
MW Evolves with Significant
Innovations for Small-Cell Backhaul
Insufficient
Performance
MW Delivers LTE-Backhaul
Grade Performance
Complex RF
Planning
MW Utilizes Simple, Proven
Network Planning Procedures
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Small-Cell Backhaul: A New Service Layer
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New Service Layer,
Greenfield Deployment,
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Specifically
forSolutions
Small-Cells
Small-Cell Backhaul: The Microwave Solution
Microwave:
Flexible Connectivity:
Area-Licensed Spectrum
26/ 28/ 32/ 42 GHz Bands
PtP and/or PtMP
Multi-hop/Relay Architecture
Accelerating Backhaul & Small-Cell
Deployment
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The Value of Area-Licensed MW Spectrum
Plenty of Regulated,
Uncongested Spectrum:
26 GHz: 1762 MHz
28 GHz: 1232 MHz
32 GHz: 1568 MHz
6.5 GHz
Bandwidth
42 GHz: 2000 MHz
Higher Practical Value:
 Regulated, clean spectrum
 Contiguous spectrum facilitates
optimized RF planning
Superior Performance:
 Less affected by multipath,
(vs. sub 6 GHz)
 Area license fee, independent of
links number (fixed expense)
 Greatly simplifies licensing logistics
 Less affected by rain,
(vs. 60 GHz)
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Macro-Cell & Small-Cell Backhaul:
Co-Existence in the same Spectrum
Re-Use the same spectrum
(i.e. 28 GHz) & freq.
channels, with minor,
coordinated RF Planning
Highly uncorrelated
backhaul layers!
Cross-layer radio signals
are blocked or absorbed
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Any Architecture Microwave Solution
The solution supports any
type of PtP connectivity
MW units can be also
configured as PtMP, for
optimized connectivity
Realizes Any Network Architecture:
Multi-hop, Relay Extensions, PtP Rings
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Reaching Any Location: Multipoint Extensions
Multipoint Nodes:
Realize multihop PtP and/or
PtMP connectivity
Buildings may
obstruct direct
LOS links
between adjacent
mall-Cells
i.e. PtP  PtMP Relay:
Extends reach to the “hidden”
Small-Cells, efficiently
Multipoint Nodes Efficiently Extend
Connectivity Along the Street Canyons
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Street-level Multipoint Extensions
Small-Cell
PtP
2nd Hop
PtP
rd
3 Hop
PtMP
1st Hop
PtMP
2nd Hop
Fiber
PtMP
1st Hop
Small-Cell
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Flexible, Scalable,
Easy-to-Deploy
Architecture
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Raising The Value of Multipoint Connectivity
Multipoint Nodes:
A single unit (system) realizes:
PtP or PtMP functionality
Software Define Radio efficiently
realizes different connectivity roles:
PtMP Hub, PtMP Terminal, PtP Unit
A common radio greatly
facilitates: RF planning,
network design,
equipment deployment,
and operations
Software Defined Radio is a Key Component
for Realizing Efficient Multipoint Extensions
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Connecting Small-Cells Optimally: PtMP
PtMP Value:
 N+1 Units for N Links
 Only 2 Units on
Aggregation Lamppost
PtMP Value:
PtMP Value:
 Single Channel per
Aggregation Point (Hub)
 Dynamic Bandwidth Allocation
 Centralized QoS
New Links Require only
Terminal Installation
Adopting PtMP Connectivity Greatly
Reduces the Equipment BoQ & Footprint
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MW & LOS Performance Certainty
NLOS Planning:
MW LOS Planning:
Deterministic planning
delivers predictable results
Intelligent mechanisms
can mitigate the streetlevel multipath effects
i) Statistical Link Gain
ii) Unknown Interference
Uncertain, varying,
unreliable performance
MW LOS Performance:
Carrier-Grade, 99.99%
Availability, Max Capacity
(1024 QAM)
MW Deterministic Planning
Guarantees “Deploy-&-Forget” Performance
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Clutter Absorbs MW Co-Channel Interference
TS Rx
@ F1
F1
Channel
TS Rx
@ F1
F1
Channel
PtMP Tx
@ F1
PtMP Tx
@ F1
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Terrain clutter blocks Interfering Paths and
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absorbs Multipath
 No Interference!
Simple, 2 Channels Frequency Re-Use
F2
Channel
F2
Channel
F1
Channel
F1
Channel
F2
Channel
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Very simple RF Planning, Street by Street Frequency
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Re-Use, Only
Two Channels Required
Intelligent Microwave
Auto-Alignment:
Real-Time Verification:
i) Simplifies unit mounting
ii) Minimizes alignment time / effort
iii) Ensures optimum performance
i) Ensures single-visit
installation success
ii) Diminishes undetected
fault conditions
Zero-Touch Provisioning:
i) Reduces installation time
ii) Avoids configuration faults
iii) Reduces field personnel
Automation Facilitates Success
in Few Simple Steps - No Further Visits
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Accelerating Small-Cells Deployment
Microwave-Multipoint:
 Exploits High-Valued, yet Unutilized
Area Licensed Spectrum
 Simple Planning / Deploy-&-Forget /
Assured Performance
 Field Proven Technology / CarrierGrade Backhaul Performance
 Flexible PtMP/Relay/PtP Connectivity,
Reaches Any Location, Efficiently
 Automation: Alleviates Complexity,
Avoids Fault Conditions
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StreetNode™
 Microwave: 26/ 28/ 32/ 42 GHz
 Multipoint: PtMP & Relay PtMP & PtP
 540 Mbit/s Full-Duplex, Carrier-Grade
 Intelligent: Auto-Alignment,
Zero-Touch Provisioning
A StreetNode™ demo is available at INTRACOM
TELECOM stand. You are welcome!
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