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COPYRIGHT © 2011 ALCATEL-LUCENT. ALL RIGHTS RESERVED. ALCATEL-LUCENT — INTERNAL PROPRIETARY — USE PURSUANT TO COMPANY INSTRUCTION
Dirk Nikolai ([email protected]) Alcatel-Lucent Deutschland AG (Stuttgart)
Metro Basisstationen als Antwort auf die Datenexplosion im Mobilfunk WCI’2011 Berlin
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3
1. Explosion der Datenraten
2. Möglichkeiten der Kapazitätserhöhung
3. Netzverdichtung
4. Metro-Basisstation
5. Feldversuche
Explosion der Datenraten
DEVICE TYPE AND NETWORK LOAD COMPARISON
Source: Alcatel-Lucent analysis of various customer networks using 9900 Wireless Network Guardian
iPad is 2x that of iPhone!
406 394
171
118
22 3
77
15
iPhone Blackberry Android Datacard
Data Calls per Day
Megabytes per Day
GLOBAL MOBILE DATA TRAFFIC GROWTH
30x between 2010 and 2015
PBytes/Month
0
1,000
2,000
3,000
4,000
5,000
6,000
7,000
2010 2011 2012 2013 2014 2015
Dongle/tablets Smartphones Feature phones Smartphones
2.5 billion connections in 2015
Video
70% of mobile traffic by 2015
Source: Bell Labs modeling and forecasts Peta = 10e15
THE DREADED SCISSORS EFFECT THE IMPACT OF DECLINING PRICE AND GROWING DATA
Source: Company reports & Bell Labs business modeling analysis
• Dollars per sub per month
• 0
• $5
• $10
• $15
• $20
• $25
• $25
• 2005 • ‘06 • ‘07 • ‘08 • ‘09 • ‘10 • ‘11 • ‘12 • ‘13 • 2014
• 0
• 500
• 1,000
• 1,500
• 2,000 (2GB)
• Megabytes per sub per
month
ARPU
Data traffic in MB
Voice traffic in MB
Möglichkeiten der Kapazitäts-
erhöhung
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Möglichkeiten der Kapazitätserhöhung
• Resourcenerhöhung (I): Erschließung neuer Frequenzbänder
• Resourcenerhöhung (II): mehr Übertragungsbandbreite
• Effizienzsteigerung (I): höherstufige Modulationsverfahren
• Effizienzsteigerung (II): intelligente Antennensysteme
• Abdeckungsverbesserung: Aufstellen weiterer Basisstationen an Orten, an denen keine oder eine schlechte Abdeckung besteht
• Netzverdichtung: mehr und kleinere Funkzellen, d. h. mehr Basisstationen.
Changes In The Network
HSPA saturated
HSPA + LTE 2.6GHz
saturated
HSPA + LTE 2.6GHz
+ LTE adv 1.8 GHz saturated
Netzverdichtung
The solution: increase the number of small sites
On a facade On a strand On a lamppost On a bus stop
http://www.youtube.com/watch?v=naPStL0kyXw
lightRadio Cube Building Block for Metro and Macro Antennas
lightRadio Metro lightRadio AAA Macro
Key Benefits of the Cube • Integrated Active Element
• Frequency Agility
— Pluggable element — Wideband performance
• Standards Agnostic Antenna
• Simplified Value Chain in BTS Portfolio
Not to scale
Standardization status Heterogeneous Networks in 3GPP (HetNet)
Macro eNB Metro Cell
What are Heterogeneous Networks:
Femto
Heterogeneous Networks mix LTE cells with various RF characteristics: Macro, Metro, …
Specific case of shared carrier:
Macro eNB Metro Cell Femto
Interferences Interferences
Interferences
When carrier is shared, interferences is a big deal for HetNet. For UL, there is near-far effect as pathloss to neighbor cell can be lower than to serving cell.
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Metro Basisstationen
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Alcatel-Lucent lightRadio™ Solution Small Cells ⇔ Small Base Stations
HeNB Home Area BS
Pico eNB Local Area BS
Pico eNB Local Area BS
Hot Zone Wide Area BS
Power 20-100 mW <250 mW <250mW < 5 W
Expected Access Control
CSG (/ OSG) CSG (/ OSG) OSG OSG
Usage Home Enterprise
Indoor Public Areas Carrier-grade
Cov.
Outdoor Public Areas Carrier-grade
Cov.
Home Cells
Enterprise Cells
Indoor Metro Cells
Outdoor Metro Cells Alcatel-Lucent
3GPP Name BS RF Class
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Why Metro?
Although everybody has a mobile phone, nobody wants base stations or antennas.
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Aesthetics: Where we want to go
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Aesthetics: Where we want to go
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lightRadio Metro Family - WCDMA 1x2 1W “All-in-One” Mast Mounting Facade Mounting
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DESIGN
Feldversuche HetNet Testbed
Stuttgart
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MGR R&D testlab Stuttgart LTE HetNet OTA testbed
LTE 800 MHz macro-coverage LTE 2.6 GHz co-channel deployment: macro + metro
Macro cell layer e.g. LTE800/2600
Low Power Nodes: MetroCell LTE2600
HotSpot traffic distribution scenario
High amount of traffic offload possible Large gain in system throughput
Co-channel Macro&Metrocell deployment in LTE2600
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Focus of Ph1 testing
- Intermediate zone
- Impact of metro cell placement, impact of Tx Power on cell range
- Validation of system simulation results
- Non-optimized Rel-8 co-channel (w/o cell range extension/eICIC)
MGR R&D testlab Stuttgart Ph1 OTA testing phase
Safe Zone
Intermediate Zone
Exclusion Zone Location A
Location B
Metro Placement in Macro - Safe Zone:
- Effect of interference is not significant
- Macro offload benefits of metro cells
- Intermediate Zone - Interference still significant
- Substantial macro offload benefits of metro cells with eICIC (3GPP Rel-10)
- Exclusion Zone: - Does not have useful cell size
- Creates high interference to macro users
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R&D Testlab Stuttgart LTE HetNet Over-the-Air (OTA) Testbed
MetroCell Site A
MetroCell on wheel Site B
Macro site 3 sectorized eNB (Band 7/20)
MetroCell indoor
HetNet Trial Results
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MGR R&D testlab Stuttgart Ph1 OTA testing phase
Metrocell outdoor (2x2, omni) Total TxPower 1 W
Dedicated carrier Shared carrier HetNet (co-channel)
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HetNet Proof-concept Trial (Outdoor) Non-optimized shared carrier
DL UDP Multi-UE measurements – sum rate CDF
Preliminary results show large capacity improvement Gains depending on metro cell user location
Metro cell user at mid-cell: 115 % capacity gain of HetNet vs Macro only Metro cell user at cell edge A: 65 % capacity gain of HetNet vs Macro only Metro cell user at cell edge B: 35 % capacity gain of HetNet vs Macro only
For less interference limited metro cell placement we expect higher gains…
Conclusion
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• Incredible mobile data traffic growth
• Metro Cells entering the networks • Alcatel-Lucent has an unique industry leading small cell portfolio (Home/
Enterprise/Metro cells) covering 3G/4G
• lightRadioTM metro cell is pioneering key technology innovations of lightRadio product family: SoC BBU, cube-based AAA, SON, …
• lightRadioTM metro cell promise flexible implementation of a 2.6 GHz capacity layer especially for clustered HotSpot traffic distribution scenarios
• E2E solutions lab Stuttgart has established LTE HetNet testbed - Focus on 2.6 GHz shared carrier deployment of macro / metro cells
- Proof–of–concept trials demonstrate feasibility of 2.6 GHz shared carrier deployments in indoor/outdoor scenarios
- Follow-up trial ongoing focussing on performance optimization/mobility and alternative metro cell placements
Metro Base Stations, Metro Cells and HetNet Key Take Aways
