Download Wireless DSL

Technologies for Wireless
Multimedia in the XXI Century
Porto Seguro, Brazil
5 June 2001
Joanne C. Wilson
ArrayComm, Inc.
Convergence creates a huge
opportunity
Market Size
1 Billion Subs
“WIRELESS
INTERNET”
300 Million Subs
WIRELESS
INTERNET
200 Million Subs
2005
1998
Source: ITU, DLJ
But not guaranteed success
• “Gold standard” for performance is wired
(dialup or LAN) connection
• Service providers, ASP’s, application and
content providers will focus on the
moderate-to-high bandwidth customers
• Pricing of wireless must be competitive
with wireline alternatives
Requirements for realizing the
opportunity
• The best aspects of
wired connections
PlayStation
– reliability … per-user
throughput … low cost
… rich content
• The best aspects of
wireless connections
– freedom to move …
always on … ubiquity
Requirements for realizing the
opportunity (cont’d)
• Low barriers to
entry for service
and content
providers
– cost … complexity
• Low barriers to
entry for access
operators
– cost … complexity
Traditional cellular systems
• Provide a partial solution
– ubiquity and high-speed mobility
• But ...
– designed to support low bandwidth, intermittent
subscribers
– can not provide significant per-user throughput at low
cost
– expensive and complex networks
• Best suited to high mobility, low bandwidth
applications with specialized content
Fixed Wireless Access systems
(MMDS, …)
• Meets a different set
of the requirements
– ubiquity, moderatehigh per user
bandwidth, reliability
• But …
– neither mobile nor
portable
– typically require
professional
installation of end-user
equipment (not low
cost)
Fixed Wireless Access systems
(MMDS, …)
• Only moderate
spectral
efficiency, and
limited capacity
below 3 GHz
• Best suited as
“local loop
bypass” solutions
Central elements of the “right”
solution
• Massive capacity to
deliver high speed,
high quality service to
all customers
• Spectral efficiency to
enable economical
operation in crowded
bands below 3 GHz
(portability
requirement)
Central elements of the “right”
solution (cont’d)
• Mass market pricing
• Data-centric, open, IP
architecture for
content and services
All of the above are achievable today
Open Services Platform
Content &
Application
Provider
Subscribers
Base
station
Base
station
NSP
WAN
Tunnel
Switch(es)
Enterprise
Base
station
PSTN/
DSL
Content
Provider
Cable
Access & Transport
Service
Open Service Features
• End to end IP
connectivity for endusers
– widest choice of enduser terminals and
applications
– common service and
content base for wired
and wireless users
Open Service Features (cont’d)
• PPP connectivity model
– leverages existing ISP
provisioning,
management and billing
tools
– PPP sessions
backhauled via L2TP
Open Service Features (cont’d)
• Clear separation of
access and end-user
service
– shared access and
transport network
– connectivity to multiple
ISP’s, ASP’s, content
and VPN providers
Radio Access Platform
• Optimized air interface for reliable and
efficient packet data transport
• Time Division Duplexed (TDD)
– maximizes flexibility in band selection (key below 3
GHz)
– maximizes flexibility in accommodating asymmetry
• Peak per-user data rates >1 Mbps
• PC Card, USB, Ethernet end-user devices
Radio Access Platform (cont’d)
• “Smart” antennas
using spatial
processing
maximize
capacity and
coverage
Radio Access Features
• Spatial processing + TDD
– maximizes flexibility in band selection
– provides unmatched coverage and spectral
efficiency, 4 b/s/Hz or 40 Mbps/cell in 10 MHz
• Native IP interface to wired network
– simplifies network architecture
– allows operator broadest choice in wired
network elements
– reduces network cost
Keys to Delivering Portable
Broadband Multimedia Access
• Massive Capacity Enabling High Speed,
High-Quality Service for ALL
– Adaptive antenna technology (spectral efficiency)
• Ubiquitous Coverage & Mass Market
Pricing
• Internet/Open Architecture for Content and
Services
Wireless DSL System Features

4 Bits/Sec./Hz/cell Spectral Efficiency Provides
400x capacity over 2G and 40x over 3G

1 Mbps to 40 Mbps User Data Rates

Powered by IntelliCell Adaptive Smart Antenna
Processing with Packet Switching

End to End Wireless IP Access and Transport

TDMA/TDD Packet Air Interface

Licensed Spectrum Below 3 GHz
Wireless DSL End to End Architecture
Core spatial
processing
systems expertise
Standard
ISP
infrastructure
“W-DSL” Mobility
Solution
“W-DSL”
Base Station
Wireless DSL
Subscribers
Content provider
Enterprise
WAN
“W-DSL”
Base Station
frame relay
ATM etc.
ISP
AAA
PSTN/DSL
“W-DSL”
chipset
Application service
provider
Tunnel switch
L2TP network server
Cable
AAA
“W-DSL”
Base Station
“W-DSL” radio infrastructure
Existing wired
Broadband access
Services
Internet
IMT-2000 & Wireless DSL compatibility
IMT-2000
• Telephone
• Voice & Data
• Tariffs
– Voice-per minute
– Data-per packet
Wireless DSL
• Terminal
• ALL IP Wireless
• Tariffs
– Flat Rate
– Premium DSL rate
Wireless DSL protects Operators high
value voice services by relieving network
of extended duration high-speed data
traffic.
IMT-2000 & Wireless DSL
compatibility
IMT-2000
Wireless DSL
Wireless DSL does not need to be backward
compatible with 2nd Generation voice standards
Summary
• The potential market is huge
• Successful solutions have to address all of the
market’s needs
– the performance of the wired network
– the applications of the wired network (the availability
of the wireless link will foster new app’s)
– the freedom of wireless
• The challenge can be met with proven
technologies in a Wireless DSL architecture
The Reward ...
180 Million
PlayStatio
n
1 Billion
675 Million
250 Million
Many Millions
65 Million
275 Million