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The Post-PC Era: It’s All About Services. Randy H. Katz The United Microelectronics Corporation Distinguished Professor Computer Science Division, EECS Department University of California, Berkeley Berkeley, CA 94720-1776 USA [email protected] Presentation Outline.

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The post pc era it s all about services l.jpg

The Post-PC Era:It’s All About Services

Randy H. Katz

The United Microelectronics Corporation Distinguished Professor

Computer Science Division, EECS Department

University of California, Berkeley

Berkeley, CA 94720-1776 USA

[email protected]


Presentation outline l.jpg
Presentation Outline

  • Convergence, Divergence, Competition

  • The Unexpected Evolution of the Internet

  • Services-Enabled Networks

  • Implications for Mobile Wireless Networks

  • Summary and Conclusions


Presentation outline3 l.jpg
Presentation Outline

  • Convergence, Divergence, Competition

  • The Unexpected Evolution of the Internet

  • Services-Enabled Networks

  • Implications for Mobile Wireless Networks

  • Summary and Conclusions


Evolution of the computer l.jpg

First Color TV

Broadcast, 1953

HBO Launched,

1972

Interactive TV,

1990

Telephone,

1876

Early Wireless

Phones, 1978

Handheld Portable

Phones, 1990

Pentium

PC, 1993

Computer

+ Modem

1957

First PC

Altair,

1974

IBM

PC,

1981

Apple

Mac,

1984

Apple

Powerbook,

1990

IBM

Thinkpad,

1992

Apple

Newton,

1993

Eniac, 1947

HP

Palmtop,

1991

Evolution of the Computer

Red Herring, 10/99


Evolution of the computer5 l.jpg

Atari Home

Pong, 1972

Game Consoles

Personal Digital Assistants

Digital VCRs (TiVo, ReplayTV)

Communicators

Smart Telephones

E-Toys (Furby, Aibo)

Pentium

PC, 1993

Network

Computer,

1996

Free

PC, 1999

Sega

Dreamcast,

1999

Internet-enabled

Smart Phones,

1999

Pentium II

PC, 1997

Apple

iMac, 1998

Palm VII

PDA, 1999

Evolution of the Computer

Proliferation of diverse

end devices and access networks

Red Herring, 10/99


After the pc l.jpg
After the PC …

  • Not about gadgets or access technologies

  • About services and applications

  • Increasing, not decreasing, diversity

  • Enabled by computing embedded in communications fabric


The shape of things now l.jpg
The Shape of Things Now

  • Siemens SL45

    • A cellular phone with voice command, voice dialing, intelligent text for short messages

    • An MP3 player & headset

    • A digital voice recorder

    • Supports “Mobile Internet” with a built-in WAP Browser

    • Can store

      • 45 minutes of music

      • 5 hours of voice notes

      • “Unlimited” addresses/phone numbers


Presentation outline8 l.jpg
Presentation Outline

  • Convergence, Divergence, Competition

  • The Unexpected Evolution of the Internet

  • Services-Enabled Networks

  • Implications for Mobile Wireless Networks

  • Summary and Conclusions



Regional nets backbone l.jpg
Regional Nets + Backbone

Regional

Net

Regional

Net

Regional

Net

Backbone

Regional

Net

Regional

Net

Regional

Net

LAN

LAN

LAN


Backbones naps isps l.jpg
Backbones + NAPs + ISPs

ISP

ISP

ISP

NAP

ISP

NAP

Backbones

Business

ISP

Consumer

ISP

Dial-up

LAN

LAN

LAN


Core networks access networks l.jpg
Core Networks + Access Networks

DSLAlways on

Cable

Head Ends

@home

Covad

Core

Networks

ISP

NAP

Cingular

NAP

Satellite

Fixed Wireless

Sprint

AOL

Cell

Cell

Cell

Dial-up

LAN

LAN

LAN


Computers inside the core l.jpg
Computers Inside the Core

DSLAlways on

Cable

Head Ends

@home

Covad

ISP

NAP

Cingular

NAP

Satellite

Fixed Wireless

Sprint

AOL

Cell

Cell

Cell

Dial-up

LAN

LAN

LAN


New internet services business model l.jpg

Applications

(Portals, E-Commerce,

E-Tainment, Media)

Appl Infrastructure Services

(Distribution, Caching,

Searching, Hosting)

AIP

ISV

Application-specific Servers

(Streaming Media, Transformation)

ASP

Internet

Data Centers

Application-specific

Overlay Networks

(Multicast Tunnels, Mgmt Svrcs)

ISP

CLEC

Internetworking

(Connectivity)

Global Packet Network

New Internet Services Business Model


Presentation outline15 l.jpg
Presentation Outline

  • Convergence, Divergence, Competition

  • The Unexpected Evolution of the Internet

  • Services-Enabled Networks

  • Implications for Mobile Wireless Networks

  • Summary and Conclusions


Services within the network content distribution l.jpg

Co-Location

Scalable Servers

WebCaches

Services Within the Network: Content Distribution

“Internet Grid”

Parallel Network Backbones

Internet Exchange Points


Services in the internet napster gnutella freenet l.jpg
Services in the Internet:Napster, Gnutella, Freenet, …

  • Something more than illegally sharing RIP’d music and videos from CDs and DVDs …

  • Cooperative construction of directories

    • Peer-to-peer computing vs. client-server computing

    • No centralized index/performance hot spot/target for denial of service attack, etc.

    • BUT existing “chatty” implementations generate a lot of network traffic

  • Technologies will evolve for efficient sharing of information within communities

    • E.g., Lotus Notes, newsgroups, etc.

    • Linking library catalogs together


Services within the network streaming media l.jpg

Content Distribution

Through MulticastOverlay Network

Content Broadcast

Network

Edge

Servers

Load Balancing Thru

Server Redirection;

Content Broadcast Management

Platform and Tools

RedirectionFabric

Inter-ISP Redirection

Peering

Services Within the Network:Streaming Media

Broadcasters

Clients

Steve McCanne


Service level peering via redirection l.jpg
Service-Level PeeringVia Redirection

  • Need common architecture to allow different vendors to create different components and work with one another while still competing

  • The challenges

    • Define the redirection architecture

    • New client/infrastructure protocol & API (a la DNS)

    • Do so in backward compatible way

    • Others…

  • One of the next big architectural issues for the Internet…

McCanne, FFNets


Enabled by application specific overlay networks l.jpg

multicast

cloud

multicast

cloud

multicast

cloud

multicast

cloud

multicast

cloud

Enabled by Application-Specific Overlay Networks

E.g., solve the multicast management and peering problems by moving up the protocol stack

Isolated

multicast

clouds

Traditional

unicast

peering

Steve McCanne


Application level servers routers l.jpg
Application-Level Servers/Routers

Solve the multicast management and peering problems by moving up the protocol stack

Steve McCanne


The service stack l.jpg
The Service Stack

Applications

End

Host

End host

Services

TCP

service

End-to-end

argument here

Network

Services

IP service

Router

Steve McCanne


The service stack23 l.jpg
The Service Stack

Applications

End

Host

End host

Services

TCP

service

DNS

stub

Infrastructure

Services

Overlay

DNS

Network

Services

IP service

Router

Steve McCanne


The service stack24 l.jpg
The Service Stack

Applications

End

Host

End host

Services

TCP

service

DNS

stub

Infrastructure

Services

Overlay

Cache

Services

Proxy

Services

DNS

Network

Services

IP service

Router

Steve McCanne


The service stack25 l.jpg
The Service Stack

Applications

End

Host

End host

Services

TCP

service

DNS

stub

redirection

Infrastructure

Services

Overlay

Cache

Services

Proxy

Services

DNS

Network

Services

IP service

Router

Steve McCanne


Service elements for internet broadcast l.jpg
Service Elements for Internet Broadcast

Applications

End

Host

End host

Services

TCP

service

redirection

stub

DNS

stub

Infrastructure

Services

Overlay

Broadcast

Redirection

DNS

Network

Services

IP and Scoped IP Multicast

Router

Steve McCanne


Presentation outline27 l.jpg
Presentation Outline

  • Convergence, Divergence, Competition

  • The Unexpected Evolution of the Internet

  • Services-Enabled Networks

  • Implications for Mobile Wireless Networks

  • Summary and Conclusions


The imode story l.jpg
The iMode Story

  • 21 million Internet-capable cellular phone subscribers

  • NTTDoCoMo has become the world’s largest ISP!

  • Most frequent used applications:

    • Voice conversations

    • Text messages

    • Animated cartoons

    • Specialized ringing tones

  • Japanese teenagers, especially females, driving the competitive development of new services!


Huge expense of new telecomms infrastructures l.jpg
Huge Expense of New Telecomms Infrastructures

  • Auctions for 3G spectrum: 150 billion ECU;Capital outlays may match spectrum expenses, all before first revenue

  • Build it, but will they come?

    • Compelling services make the difference

  • Alternative business model

    • Collaborative deployment of wireless infrastructure

    • Competitive provisioning of services

  • Better way to build a network? …

    • Partition frequencies based on subscriber density

    • Eliminate duplicate antenna sites

    • Leverage common backhaul networks


Application services in the mobile wireless network l.jpg
Application Services in the Mobile Wireless Network

  • Enabling more user-centered/adaptive apps

    • User preference management services

    • Application coordination services

    • Context-awareness services

    • Content-localization services

    • Mobility-model extraction services

    • Content adaptation to access network performance

    • Content adaptation to access client capabilities

    • Storage migration in response to user mobility

  • Special about mobile wireless?

    • Exploitation of location and mobility

    • Resource constrained nature of wireless environment


Infrastructure services in the mobile wireless network l.jpg
Infrastructure Services in the Mobile Wireless Network

  • Forming dynamic confederations

    • Discovering confederates, establishing trust

  • Open service/resource allocation model

    • Service creation, establishment, placement;

    • Exchange resources, capabilities, status;

    • Allocate based on economic methods;

    • Manage trust among participants;

  • Service brokering/peering

    • Dynamically construct overlays on component services provided by underlying service providers

    • Redirect to alternative service instances


Presentation outline32 l.jpg
Presentation Outline

  • Convergence, Divergence, Competition

  • The Unexpected Evolution of the Internet

  • Services-Enabled Networks

  • Implications for Mobile Wireless Networks

  • Summary and Conclusions


The post pc era l.jpg
The Post-PC Era

  • Not about specific Information Appliances

  • Services spanning access networks, to achieve high performance/manage end device diversity

  • Builds on the New Internet

    • Opening up of the connectivity “cloud”

    • Embedding computing in the communications fabric

  • Pervasive support for “intelligent” services

    • Near you for faster access, more personalized, more localized

    • Scalable to deal with surges in demand as needed


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