Transcript AIT Sensor Nets Seminar

G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
"Emerging Disruptive
Technologies to 3G"
Gregory S. Yovanof, Ph.D.
“Broadband Wireless & Sensors Networks”
Athens Information Technology
e-mail: [email protected], Tel: +30 210 668-2772
ASTEL Conference 2006: " Technology Convergence & Innovations "
19 -20 April 2006, Bulgarian Academy of Science, Sofia
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
Agenda
Key trends in the Converged Telecom Industry
The rise of Broadband Mobile
Fixed Mobile Convergence (FMC)
Redefining the Wireless Metro-Area Network
Broadband Cellular: The 3G & the Road Ahead
WiMAX: What is the Opportunity?
Emerging Disruptive Innovations
Metro-scale WiFi
Mesh Networks (WiMAX, WiFi), Cellular/WLAN integration
Voice over IP over WiFi
Summary - Conclusions
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
Key Trends in Telecom
ICT Industry Convergence between computing,
communications & content
The major drivers for which are the: “Digital economy”
and the “Knowledge society”
Examples: The Internet, Voice over IP (VoIP), IP Telephony
Convergence of the Infrastructure & the CPE
PSTN & Mobile Telephony - Growth in mobile penetration
PCs no longer the only broadband drivers since new handset
devices make a splash
Convergence in Enterprise Communications
Integrated Enterprise Communications Infrastructure
Converged mobile mail and enterprise data services
Mobile enterprises have competitive and productivity advantages
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
Key Challenges
Broadband Wireless is the Future!
Broadband and Mobility together is
a huge challenge!
The goal Fixed Mobile Convergence (FMC)
(a.k.a death of Fixed)
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
Fixed Mobile Convergence
FMC
Fixed/Mobile Convergence (FMC) is among
the latest and most widely used buzzwords in
the wireless and wireline industries
Grounded in IP convergence
It can be viewed as:
“… An end-to-end service environment where
enterprise and personal solutions - voice, video,
data and rich media - are managed and delivered
on a secure IP based infrastructure, comprising the
integration of devices, networks, applications and
operations support.”
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
How to get there - Elements of
FMC
Device Convergence
Identity Convergence
Email
IM
SMS/MMS
Network Convergence
Wireline
Seamless
Cellular
WLAN - WiFi
Handoff
WMAN - WiMAX
Fixed phone#
Mobile phone#
User ID#
Applications/Capabilities
Data, voice, video,
multimedia
One contact list, calendar
and voice mail
Single sign-on, multiple
devices and applications
Centralized presence
status (online, busy,
offline) for all applications
and devices
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
FMC Driver: Integrated Enterprise
Communications Infrastructure
Over Any
Radio Network
PANs, LANs,
CANs, MANs, WANs
GSM, CDMA, TDMA, PCS,
GPRS, PDC, WLAN, 3G UWB
etc…...
Web Content
Communications Data
Enterprise Data
Directory Data
Application Data
Any Data
(to which the user is entitled)
Wireless & Mobility Key Enablers for the Real-time Enterprise
To Any Device
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
Connectivity Everywhere, Much Of
It Through Wireless
WANs
Campus networks
Metro
broadband
networks
Personal-area
networks
Satellite
networks,
GPS
P2P networks
Cable
replacement,
room
networks
Home
networks
Sensor networks
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
The Future of Wireless Drivers of Growth
Increased demand for more bandwidth
(at the office and home)
Broadband Wireless Internet Access
Increasing need for user mobility
 Seamless
Connectivity for All, to Anything,
from Anywhere at Anytime
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
NGN Architecture: Moving Towards
An All-IP Infrastructure
Administrative
Domain
Other
Access Nets
Internet
Enhanced
Applications
Integrated
Networking
Support
IPv4
Integrated Radio
Resource/Spectrum
Management
IP Core
4G
3G/2G
IPv6-based
Networking
Source: WWRF, Book-of-Vision v1.1
DAB
DVB
IPv6
Administrative
Domain 2
WLAN
Multiparty multimedia communications
For mobile nodes and networks (PAN, LAN)
With secure seamless mobility
Between access systems of same and different kinds
Within and between administrative domains
Across personal, home, car and enterprise spaces
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Wireless Market -The Big Picture
G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
WWAN
3G
WCDMA
EDGE
GPRS
CDMA2000
1xeV-DO
HSDPA
Voice, Data
Messaging
Rich Media
WMAN
WiMAX
802.16
Hot zone
Last-Mile Access
Backhaul
BB Multimedia
*
WLAN
WPAN
Wi-Fi *
Sensor
and
RFID
Bluetooth TAGs
802.15.4
Zigbee
802.11
Hot Spot
UWB
Data, Voice
CableWireless Replacement
Internet
Data Sync
Infostations Consumer El.
Wireless Technologies Will Co-Exist
The Result: Optimal connectivity
Sensing
NFC
Smart
Spaces
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Faster
Wireless Video
Applications
UWB
Peak Data Rate
802.11a
WiMAX
802.22
Wireless Data
Applications
802.11g
IrDA
802.11b
2.5G/3G
Home RF
Bluetooth
Wireless VoIP
Applications
Slower
G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
Convergence Trends in the Market
Positioning of Wireless Technologies
ZigBee
Closer
Range
Farther
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Sources: WRH + Co, SPS
G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
Mobile Network Evolution
3. Generation 3G Beyond
Mass Market
Introduction
GSM
GSM
GSM 2+ and
Intelligent
Networks (IN)
basic services/
network optimisation
Voice
Data
GSM Ph 2
Micro BTS
Dual Band
Half Rate
Coverage/
Capacity
GSM Ph 2+
IN
HSCSD
GPRS
Camel
Enhanced
Services
Wideband
Air I / F
Bandwidth
on Demand
Seamless Services
FDD/TDD
WLAN/Broadcast
ATM/IP based
networks
New Business
Opportunities
Enhanced
Multimedia Services
with full
roaming through
different networks
Multimedia
Mobile
Communication
3G is here!!!
4. Generation
Future Wireless
Interworking of
Access systems
Service demands
from 100 Mb/s
(high mobility)
up to 1 Gb/s
(low mobility)
All IP-networks
Network Computing
Peer to Peer
Broadband
Mobile
Communication
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
3G Evolution
Source: NOKIA
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
3G Evolution towards 4G
?
70 Mb/s
WiMax
11 - 54 Mb/s
384 kb/s
HSDPA/
HSUPA
UMTS
(Dense)
50 - 100
Mb/s?
15+ Mb/s
14.4 Mb/s
* OFDM : Orthogonal FDM
2Mb/s
Theoretical max data rates depend on radio conditions &/or system options e.g. bandwidth.
Time scales are approximate/illustrative.
The terms 3G+, Evolved 3G, Super 3G, Beyond 3G, 4G etc are not officially defined.
3G
2003
4G
OFDM*
MIMO
MBWA
(Wide Area)
WiFi
(Local Area)
UMTS
(Wide Area)
?
3G +
2004
MBWA
2006
4G
2008
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
WiMAX
WiMAX - Worldwide Interoperability for Microwave
Access
WiMAX is an interoperability specification for 802.16-2004 –
fixed point-to-multipoint (P2M or P-to-MP) WMAN technology
Mobility extensions defined in 802.16e-2005
Today’s WiMAX products are for FWA applications only!!!
WiMAX is based on a subset of IEEE 802.16-2004
(formerly 802.16a Rev d)
Technology: 256 QAM/OFDM
2.5 and 3.5 GHz. licensed bands; 5 GHz. Unlicensed
Goals are $250 "set top" box; $100 PC Card (FWA)
To 70 Mbps and 50-60 miles (difficult to achieve)
More likely: xDSL/T1 speeds over a few kilometers
40+ Mbps possible in some fixed applications
Big investment in VLSI by Intel and others
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
Service provider Support for
WiMAX is Growing
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
What is WiMAX bringing?
Improved business case for broadband wireless
access
Standards based interoperability for lower equipment costs
Reduced investment risk for operators
Complements LAN & WAN wireless solutions
Can backhaul other technologies (e.g. Wi-Fi hotspots)
Can add broadband data capacity to mobile networks
Range of deployment scenarios
Rural, suburban, urban
Enterprise, small business, residential
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
The WiMAX rollout driven by an
industry consortium led by Intel
Data
Rate
SOC
Available
Standard
Maturing
Standard
Maturing
Fixed WiMAX
IEEE 802.16d
2005
Portable WiMAX
Nomadic WiMAX
IEEE 802.16d/e
2006?
Mobile WiMAX
IEEE 802.16e
2007?
Mobility
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WiMAX can close the gap:
3G
• Open standards
• Support for Unlicensed bands
• Data centric
TCO
G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
WiMAX in Mobile PCs: Closing the
Value Gap
Cellular Data
WiMAX
802.16e
Public
WLAN
2.5G
Optimizing
on the pause
BB usage
Spotty WLAN coverage
The Vision
enable cost effective
Broadband Anywhere
Work
Private WLAN
Home
Home &
Work
Metro
I can connect
]
Coverage [ Places
Places I’m at
Anywhere
WiMAX can bring “Almost Anywhere data connectivity”
with Quality of Service (QoS) guarantees!!!
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TCO: Total Cost of Ownership
Disruptive Technologies*
Simple, cheap,
more convenient to use
Fast technological progress
Target lower performance
markets
Commercialized in emerging
market
Subsequently become
performance competitive
against established products
Successful, well-run, well
established companies lose
markets, when they fail to
differentiate between
sustaining & disruptive
technologies
* Clayton M. Christensen, “The Innovator’s
Dilemma,” 1997
performance
G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
Disruptive Technology
New replaces
old technology
Market for new
technology
time
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
The Wireless Hype Cycle
Visibility
BREW
Key:
Will reach the “plateau” in:
WiFi Hotspots
Less than two years
Mobile
Java/J2ME
Two to five years
MMS
Mesh Networks
Wireless PDA
/Smart phones
Wireless E-mail
Bluetooth
Networking
Five to 10 years
Wireless Web ( Portals/ASP’s)
Personal Domain
X
IPv6
X
X
Mobile Location Services
Adhoc
Networking
Multi Channel App X
Gateways
X
UWB
X
SMS
Wireless
Voice
VoIP
Wireless Application
P2P
Gateways
Bluetooth
1xRTT/
CDMA2000 1X
802.11a
2G Network Capability
802.11b
Mobile
Financial
Services
Wireless StreamingX
E911
GPRS
SW
Defined
Video
X
3G Network
Radio
WAP
X 4G
Capability
Enhanced/Web Phones
Peak of
Technology
Inflated
Trigger
Expectations
Maturity
Trough of
Disillusionment
Slope of
Enlightenment
Plateau of
Productivity
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As of Q3 2003
Copyright © 2003
G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
Disruptive Technologies
Targeting the Cellular Market
Public-WLANs
Hotspots & Metro-scale WiFi
Mesh Networks
Hot-Zones (WiMAX & WiFi, 3G, …)
Voice over IP over WiFi - VoWiFi
Broadband Wireless IP Telephony
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
Metro-scale WiFi
The idea – use Wi-Fi
meshes to rapidly deploy
outdoor services over a
large geographic area
Origins: Metricom’s
Ricochet (mid-1990s)
Economics now allow for
residential services in
suburbia
But most emphasis
remains on high-density
areas
and government services
Metro-scale WiFi - The Technology
High-volume, low cost, low margin
Based on off-the-shelf consumer
Wi-Fi adapters
Not “carrier class” service
Disruptive to MNOs/MVNOs?
City-wide “Hot Zones”
Already deployed in some smaller
cities (mainly, in the US)
Big cities preparing to deploy soon
Public safety a major driver,
“digital divide” another
Near-term threat and opportunity
for MNOs/MVNOs
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
Public Wi-Fi Access HotZones
Local WISP
Coffee
Shop
Deploy multiple
HotSpots on the
same mesh
network to create
a unified HotZone
Library
Park
Source: Ike Nassi, Firetide, Inc.
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
WiFi Hotspots - A Major
Growth Area
Leading providers, T-Mobile,
Boingo, Wayport Access,
Megabeam (UK)
Service by subscription or open
(e.g., hereUare)
Important partnerships
developing
T-Mobile / Starbucks (subscription)
Cometa / McDonalds (open)
Megabeam / Holiday Inn (open)
Valid 3G alternative for portable
services
Ubiquity of 802.11 interface - being
built into new laptops
Unbeatably low equipment costs
Low capitalization, no incremental
spectrum
12,647 Wi-Fi access points in
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New York City, Summer 2002
Global Public WLAN Growth
42,000
40,000
30,000
20,000
10,000
2,000
2001
2002 2003 2004 2005
Source: Instat/MDR 5/02
U.S. Public WLAN Users (M)
Users
50,000
Global Hot Spot Locations
G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
Locations
5.6M
6
Consumer Users
Business Users
5
4
3
2
1
30k
0
2002
2003
2006
$1,636
Public WLAN Service
Revenue Growth (USA)
$1,000
$830
$495
$500
$217
$0
$9
2002
$82
2003
2004
2005
2005
2006
2007
Source: Yankee Group 11/02
$2,000
$1,500
2004
2006
2007
Source: Yankee Group 11/02
No. of Hotspots in EU
Denmark
571
Finland
10
France
827
Germany
5618
Ireland
72
Norway
117
Sweden
87
UK
1985
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
Unlicensed Mesh Networking
Leveraging the unlicensed bands of 802.11, mesh technology can
deliver high bandwidth at an order of magnitude lower cost than
existing cellular technologies.
Mesh architecture permits the extension of wireless coverage to
areas that do not have cabling infrastructure.
In these situations, mesh access
points integrate with existing WLAN
access points to extend Wi-Fi
coverage to areas not readily
accessible by cables.
The IEEE 802.11s Working Group
has formed a study group to explore
establishing an industry-recognized
standard for wireless mesh
networking.
Self-Organizing Neighborhood Wireless Mesh Networks
(Source: Microsoft Research)
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
Metro-scale Wi-Fi Deployments
San Mateo, California
deployed 3 mile Wi-Fi hotzone for police officers
No interference issues
reported after one year of use
Meets California Law
Enforcement
Telecommunications
(CLETS) standards for
security and reliability
Source: Lt. Wayne Hoss, SMPD
Athens, GA (Home to
University of Georgia)
deployed a downtown network
earlier this year
Public partnership between
city-county government and
Government Agencies
Published “Wi-Fi Clouds and
Zones: A Survey of Municipal
Wireless Initiatives” report
available at
www.muniwireless.com
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
City-Wide Wi-Fi in Chaska, MN
City operated, 16 square mile coverage area
Public safety, low-cost residential broadband service
7500 homes passed, 1100 pre-registered
200 cells, <$500,000 CapEx
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
Public-WLAN & 3G Integration
P-WLAN is becoming a mobile
business complementing 2G, 3G
services
Combined WLAN/GPRS terminals
are available (e.g., Nokia D211)
Global Roaming is of paramount
importance to the success of the
service
Other key features:
Mobile-IP, Voice over IP
Security
Wireless ISP Global Roaming
Seamless Interworking
(3GPP working group, I-WLAN)
Unlicensed Mobile Access (UMA)
WLAN - 3G Cellular Integration using
Mobile-IP
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
Emerging Wireless Mesh
Networks (WMN)
Meshes are the most
important architectural
innovation in wireless
networks today
Reduced requirement for
backhaul
But more backhaul is
always desirable
Reduced installation
expense
Cover even an entire city
in minimal time
Simple incremental growth
– more nodes, more radios
per node
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
Interworking: WiMAX, WiFi, 3G
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
Cost Performance Comparison
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
Broadband Services: Voice over IP (VoIP)
VoFi –
Voice over IP over Wi-Fi
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
Broadband (IP) Telephony
Broadband telephony is speech/voice
that is packaged and transmitted partly
or entirely over IP-based networks
Broadband telephony is the sum of:
Voice Over IP
Internet telephony
Related value-added services
IP-Telephony requires a broadband
connection
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
VoIP Changes Telecomm
VoIP changes everything !
The growing popularity of VoIP triggers the demand for IP based access and
changes the landscape of telecomm
3G products are compatible with traditional circuit based PSTN and PSMN,
while 4G may only need to support VoIP with gateway and gatekeeper
separately purchased
Cellular Phones
POTS Phones
Circuit Based
Voice Network
(PSTN)
Circ
u
Con it based
nect
ions
VoIP To
PSTN
Gateway
IP Based
Voice Network
VoIP
Fixed
Phones
Circuit Based
Cellular Network
(PSMN)
VoIP to
PSMN
Gateway
POTS
Phones
VoIP
Terminal
VoIP
Mobile
Phones
PC to Phones
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
VoFi – Everywhere, All the Time
Voice over IP over WiFi: Becoming a reality in 2006 Following more general Cellular and WiFi convergence trends
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
VoFi - Early Commercial Availability
There are operators already offering
commercial VoWiFi services such as
Phone Systems in France
TeliPhone in North America,
NTT DoCoMo in Japan
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
Equipment Manufacturer Plans
Smartphones
Mobile smartphone’s / PDA’s are
making a slow progression towards
dual capable mobile access for WiFi
and cellular networks access.
Mobile phones
Motorola has announced plans
to integrate Skype software in
WiFi and Cellular capable
handsets
Skype Technologies and i-mate,
a PDA manufacturer announced
the first wireless mobile
handsets preloaded with Skype
software.
Other manufacturers including
Nokia and Sony Ericsson have
made announcements for dual
capable mobile phones
General availability of multi-network
enabled devices e.g. Bluetooth, WiFi,
EDGE, + GPS etc. expected in 1Q07
Residential VoIP
Vonage offers WiFi
enabled handsets for use
with Linksys access
point/routers installed in
home
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
Apple to launch iPhone
March 29, 2006: Visiongain
believes that the next product to
be released by Apple is the
much-rumored "iPhone". The
Apple -branded mobile phone is
likely to debut this spring with
the launch of Helio - a US
mobile virtual network operator
(MVNO), formed by EarthLink
and SK Telecom at an estimated
cost of $440 million.
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
Intel’s Mobile VoIP Project
5,000-worker campus that encompasses Wi-Fi
within the company and Wi-Fi/3G/WiMAX in the
wide area.
"Open questions" regarding mobile VoIP include
QoS, roaming and security; and,
How do you secure something that crosses multiple
networks?
Intel and ZTE have announced plans to jointly
launch WiMAX service in China (1Q06)
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
Strategic Challenges to Mobile
The threat for mobile operators is that the cellular traffic generated
indoors could be cannibalized by third parties' voice over WLAN
applications.
A significant and growing percentage of cellular voice calls are generated
in environments where there is or soon will be WiFi coverage.
This includes Metro, Local Area as well as the Enterprise Campus
VoWiFi is probably not going to reshape the mobile market in the short
term, but it can pose great challenges to mobile market players in the
future.
Mobile operators to limit the impact of WiFi phones by:
Controlling the specifications of their handsets so that their customers
cannot bypass their network
Implementing their own WiFi/cellular solutions, and providing seamless
mobility to their own customers.
This is also an opportunity for mobile operators to reduce network
costs, as the use of the WiFi network to carry indoor voice traffic will
reduce the load on the cellular infrastructure
Adopting voice tariff strategies that reduce customers' interest in
adopting VoWiFi services from other providers.
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
In Summary - Disruptive Technologies
Targeting the Cellular Market
Public-WLANs - Hotspots & Metro-scale WiFi
Features: 802.11a/b/g technology, 54 Mbps
Value Proposition: True Broadband access, nomadic services
Issues: ISP roaming, billing; Limited area, low mobility
Mesh Networks - Hot-Zones (WiMAX & WiFi)
Features: 802.16a (WiMAX), up to 70 Mbps
or, 802.11b/g (neighborhood network) up to 54 Mbps
Value Proposition: Broadband Access, Service Continuity
Issues: ISP roaming, billing; Low mobility support

Voice over IP (Internet Telephony) over WiFi - VoWiFi
Features: Data Network, IPv6, SIP (Session Initiation Protocol)
Value Proposition: Cheap, Global Unique Number/Address
Issues: Low Quality (difficult to guarantee QoS - requires a
broadband connection)
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G. S. Yovanof, Athens Information Technology, “ASTEL Conference”, Sofia, Bulgaria, Apr ‘06
Summary - MBWA
Wide-area BWA is here today
HSDPA/HSUPA provides best option in the short term
WiMAX well suited for FWA (Last-mile solution) - 802.16e will offer
true Nomadic Services BWA (when ready)
The big challenges may be financial and subscriber-unit related
Mobility is the killer-app for Broadband Wireless Access
Mobile voice is well-established (rapidly replacing wireline)
Mobile multimedia data is becoming more important
But, competition is significantly more brutal here …
Metro-scale WLANs, Mesh networks, … 4G(?)
Multi-technology solutions will predominate - Issues related to the realtime, QoS provisioning can be addressed but never perfectly
Business model for competing in this field is currently unclear
Disruptive technologies are fighting their way into the
market - Innovation continues!!!
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