WiMAX
Application scenarios, first experiences and evolution
Michele Morganti
Siemens Communications
ITU-BDT Regional Seminar on “Fixed Mobile Convergence
and new network architectures for the Arab Region”
Tunis, Tunisia, 21-24 November 2005
Communications
Exceeding Nomadic Customers’ expectations
W-LAN like access:
+
Anywhere
+
Anytime
+
Seamless
+
Simple
+
Friendly
+
Secure
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Naturally complementing WiFi
WLL or WiMAX
WiMAX
My Personal Hot-Spot
WiFi
Residential
Hot-Spots
The Internet
Nomadic
Hot-Spots
Corporate
Hot-Spots
Public Hot-Spots
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Providing cellular coverage of urban and rural areas alike
Existing
MW Links
dense urban
d = 3km
urban, suburban
d = 5 km
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Operating in LOS and NLOS
WiMAX technology, solves or mitigates the problems
resulting from NLOS conditions by using:
• OFDM technology.
• Sub-Channelization.
• Directional antennas.
• Transmit and receive diversity.
• Adaptive modulation.
• Error correction techniques.
• Power control.
Full featured cell radii
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Filling the gap between Fixed and Mobile
Mobile Networks (GSM, UMTS, HSPDA, …)
BB Wireless (WiMAX 802.16d, 802.16e, …)
Vehicle
Mobility
Fixed
Walk
Fixed Networks (xDSL, FITL, …)
0,01
0,1
1
10
100
Bandwidth
(Mb/s)
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Easy to integrate with W-LAN access through WIP
The Wireless Integration Platform (WIP) is designed to support both
Wireless LAN and WiMAX technologies
It performs the following functionalities
• Authentication – Authorization – Accounting
• End user billing \ charging
• Access Control
• It provides an Interface to 2G - 3G networks (towards HLR and the
Billing system)
End User Authentication based on the Web portal page
Billing \ Charging models
• pre-paid (voucher)
• post-paid (Credit Card)
• SIM card ….
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Easy to integrate into 2G/3G Mobile Networks
#$
%
!"
'
( )
*
!
,
'
( )
*
&
#
SeCon Installations
+ " &
SIGNALLING
UMTS / GPRS TRAFFIC
WLAN TRAFFIC
GPRS Installations
MSM (Mobile Session Manager) = AAA Server
Charging@[vantage] = Charging logic, rating, accounting
MSP (Mobile Smart Proxy) = WAP/Web Gateway
WLAN Installations
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Fully supporting Internet Mobility standards underway
NAP (ASN)
R3
R6
UE
3G
MNO
NSP
ASP
ASN
GW
BS
CSN
Internet
PoA@
payload
BS@+Tunnel id
PoA@
payload
Micro-Mobility tunnel
NAP:
NSP:
UE:
BS:
CoA@
PoA@
payload
PoA@
payload
Macro-Mobility MIP tunnel
Network Access Provider
Network Service Provider
User Equipment
Base Station
ASN:
GW:
CSN:
ASP:
Access Service Network
(ASN) Gateway
Connectivity Service Network
Application Service Provider
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Application scenarios and Standards evolution path
WiMAX Profile#3 (IEEE 802.16e / 802.16g)
WiMAX Profile#2 (IEEE 802.16e)
WiMAX Profile#1 (IEEE 802.16-2004)
Mobile
Portable
Nomadic
Fixed
Wireless DSL
Corporate Feeding
WiFi Feeding
Hot Zone
No Handover
User authentication
in different locations
Hot Zone
Session continuity
within Hot Zones
Mobility
Seamless Handover
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A worldwide Broadband Wireless Access standard
CPE
Price
Compliance to
standard
Standard
frequency plan
Harmonized
licensing schemes
Proprietary
Standard
are all key to achieve:
-../
-.0.
CPE cost reduction
Service
interoperability
Worldwide roaming
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License value as a function of intended usage
License must fit actual technology potential to avoid overpricing
Outdoor and indoor coverage must be guaranteed separately
Unlicensed spectrum (5.8 GHz) best fit for private/local usage
>2.5 GHz
>3.5 GHz
>5 GHz
>10 GHz
Bandwidth
Ubiquity
Nomadicity
Mobility
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WiMAX: some first conclusions
Leading BWA technology, addressing several different user
needs
Users not adequately served by wired BB access at their
home/office
Users requiring ubiquitous BB access
Offering unprecedented opportunities to operators and
governments
To reshuffle the TELCO market by fostering liberalization and
competition
To provide customers and citizens with high quality affordable
services
To effectively confront the risk of Digital Divide
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Long-term Digital Divide risk in Italy
Areas with
inadequate
(fiber/copper)
wired access
capacity
Urban
4%
Rural
59%
Suburban
37%
Population:
5,700,000
NorthNorth-East
11%
South & Islands
32%
Central 25%
NorthNorth-West
32%
Source: Osservatorio Larga Banda 2005
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Early WiMAX trials in Italy
Siemens’ WayMAX trial equipment
Indoor unit
Residential
Modem
Outdoor unit
Antenna
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Early WiMAX trials in Italy
Cassina de’ Pecchi trial architecture
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Early WiMAX trials in Italy
Cassina de’ Pecchi trial layout
Sector-1
antenna
TS
Demo lab
Sector 2
Demo lab
TS
Tower
Sector 1
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Early WiMAX trials in Italy
Cassina de’ Pecchi (MI) trial coverage
BS
TS
11.1 km
NLOS
CASSINA DE’ PECCHI
(Siemens Plant)
BICOCCA
(Siemens Headquarter)
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Early WiMAX trials in Italy
Cassina de’ Pecchi – Bicocca NLOS connection
View from Bicocca towards Cassina
Cassina de’ Pecchi – Bicocca link data
Distance: 11.1Km, (NLOS, near LOS)
Clutter: urban / suburban
BS Antenna (Cassina): 90deg sector, 15dBi; height 45m
TS Antenna (Bicocca): 18deg, 18dBi; installed at 6th floor (20-25m )
BS Tx Power: +35dBm
Rx level DL (TS): around -65dBm
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Early WiMAX trials in Italy
Combined DVB-T/WiMAX trial in Val d’Ayas
Sector 2
Ayas_Crest (BS)
Antagnod
Sector 1
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Early WiMAX trials in Italy
All-Wireless CATV concept: broad area coverage
DVB / WiMAX
Head End
DVB-T + WiMAX
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Early WiMAX trials in Italy
All-Wireless CATV concept: last mile/drop solutions
DVB-T Signal
DVB-T Antenna
WiMAX Signal
WiMAX Roof-top Antenna
DVB
Content
WiMAX/WiFi Access
Point
DVB / WiMAX
Head End
IP
IP
Network
Network
Existing TV Signal
Distribution (Coax)
WiFi
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WiMAX: further conclusions
Best fit for
WLAN (and Hot-Spot) feeding in urban areas
SDSL alternative in urban and sub-urban areas
xDSL alternative in low density and/or geo-morphologically
disadvantaged areas
xDSL alternative in areas with high seasonal changes in
population
Direct broadband wireless access in large outdoor areas
DVB-T return channel
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WayMAX: product availability roadmap
Internal lab trials
until Sep ’05
Public trials with customers
since Oct ’05
Commercial availability
from Dec ’05
Manufacturing ramp-up
1st Half of ’06
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