ICEBERG: From POTS to PANS Anthony D. Joseph Randy H. Katz UC Berkeley - PowerPoint PPT Presentation

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ICEBERG: From POTS to PANS Anthony D. Joseph Randy H. Katz UC Berkeley

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Future ICEBERG: From POTS to PANS Anthony D. Joseph Randy H. Katz UC Berkeley S. S. 7 IBM Summit January 7, 1999 http://iceberg.cs.berkeley.edu Cellular Core ... – PowerPoint PPT presentation

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Title: ICEBERG: From POTS to PANS Anthony D. Joseph Randy H. Katz UC Berkeley


1
ICEBERG From POTS to PANS Anthony D.
JosephRandy H. KatzUC Berkeley
Bridge to the Future
S. S. 7
  • IBM Summit
  • January 7, 1999
  • http//iceberg.cs.berkeley.edu

Cellular Core Network
2
Its the Services, Stupid!
  • Today, the telecommunications sector is
    beginning to reshape itself, from a vertically to
    a horizontally structured industry. It used
    to be that new capabilities were driven primarily
    by the carriers. Now, they are beginning to be
    driven by the users. Theres a universe of
    people out there who have a much better idea than
    we do of what key applications are, so why not
    give those folks the opportunity to realize them.
    The smarts have to be buried in the
    middleware of the network, but that is going to
    change as more-capable user equipment is
    distributed throughout the network. When it does,
    the economics of this industry may also change.
  • George Heilmeier, Chairman Emeritus, Bellcore
  • From POTS to PANS Telecommunications in
    Transition

3
Important Trends
  • Multimedia / Voice over IP networks
  • Lower cost, more flexible packet-switching core
    network
  • Simultaneous delay sensitive and delay
    insensitive flows (RSVP, Class-based Queuing,
    Link Scheduling)
  • Intelligence shifts to the network edges
  • User-implemented functionality
  • Programmable intelligence inside the network
  • Proxy servers intermixed with switching
    infrastructure
  • TACC model Java code write once, run
    anywhere
  • Rapid new service development
  • Speech-based services
  • Implications for cellular network infrastructure
    of the 21st century?
  • High BW data (384 Kb/s-2 Mb/s) Reliable Link
    Protocols

4
ICEBERG Internet-based core for CEllular
networks BEyond the thiRd Generation
  • The Challenge
  • Developing service intensive, network-based,
    real-time applications
  • Securely embedding computational resources in the
    switching fabric
  • Providing an open, extensible network
    environment heterogeneity
  • Computing
  • Encapsulating legacy servers and partitioning
    thin client functionality
  • Scalability 100,000s of simultaneous users in
    the SF Bay Area
  • High BW IP backbones plus diverse access networks
  • Different coverage, bandwidth, latency, and cost
    characteristics
  • Third generation cellular systems UMTS/IMT2000
  • Next generation wireless LANs Bluetooth
  • Home networking DSL / Cable modem

5
ICEBERG Project Goals
  • Demonstrate ease of new service deployment
  • Packet voice for computer-telephony integration
  • Speech- and location-enabled applications
  • Complete interoperation of speech, text,
    fax/image across the four Ps PDAs, pads,
    pagers, phones)
  • Mobility and generalized routing redirection
  • Demonstrate new system architecture to support
    innovative applications
  • Personal Information Management
  • Universal In-box e-mail, news, fax, voice mail
  • Notification redirection e.g., e-mail, pager
  • Home networking and control of smart spaces,
    sensor/actuator integration
  • Build on experience with A/V equipped rooms in
    Soda Hall

6
ICEBERG Project Goals
  • Understand the implications for cellular network
    design based on IP technology
  • Cellular / IP interworking functionality
  • IP network provisioning for scalability
  • Soft QoS for delay-sensitive flows
  • Multinetwork mobility and security support
  • Understand how to
  • Encapsulate existing applications services like
    speech-to-text
  • Deploy and manage such computationally intensive
    services in the network
  • Integrate other kinds of services, like mobility
    and redirection, inside the network

7
Project Approach
  • Understanding three key research areas
  • Cellular / IP integration
  • Mobility Management
  • Wireless link management
  • Packet Scheduling in GPRS and W-CDMA
  • Reliable Link Protocols
  • Proxy- and Multicast-Enabled Services
  • Speech / Information dissemination
  • ProActive Infrastructure NINJA
  • Computing resources spread among switching
    infrastructure
  • Computationally intensive services e.g.,
    voice-to-text
  • Service and server discovery
  • Security, authentication, and billing

8
Internet-Scale Systems Research Group
Personal Information Management and Smart Spaces
Distributed Videoconferencing
Room-scale Collaboration
Speech and Location Aware Applications
ICEBERG Computer-Telephony Services
MASH Media Processing Services
TranSend Extensible Proxy Services
Active Services Architecture
Distributed Computing Services NINJA
Computing and Communications Platform
Millennium/NOW
9
Transparent Information Access
Speech-to-Text Speech-to-Voice Attached-Email Call
-to-Pager/Email Notification Email-to-Speech All
compositions of the above!
Policy-based Location-based Activity-based
10
Cellular / IP Integration
  • Integrating a GSM BTS with an IP core network
  • Mapping IP signaling to SS7 radio management
  • Call admission and handoff
  • Mobility management interworking
  • Mobile IP uses home agent / foreign agent
  • GSM uses Home Location Register / Visiting
    Location Register
  • Handoff between Mobile IP and GSM networks
  • Scalability, security of Mobile IP?
  • Generalized redirection agents
  • User- or service-specified dynamic policy-based
    redirection
  • 1-800 service, email to pagers, etc.
  • Service mobility as a first class object

11
GSM BTS-IP Integration
Interactive Voice Response
Uses OM TRAFFIC to simulate BSC, MSC, and HLR
functionality
Infocaster
NetMeeting
VAT
PC
2 TRX
Control Signaling
Internet
IP-PAD
Signaling
UPSim
RBS 2202
Thor-2
E1
GPC board
Ethernet
Traffic
E1 Voice _at_ 13kb/s Data _at_ 12kb/s
GSM Phone
Performs rate adaptation function of ZAK/TRAU
PSTN
H.323 GW
12
Potentially Any Network Service (PANS)
Same service in different networks Service
handoff between networks
2-way Paging
PSTN
GSM/CDMA
  • Iceberg Access Points (More than gateways)
  • Provide policy engine
  • Handle routing, security

IAP
E.g., follow me service E.g., any-to-any service
High BW IP core Diverse access links
13
Service Mobility as aFirst-Class Object
Universal Names Globally unique IDs
Randy_at_Berkeley
OfficePSTN (Teaching) 510-642-8778 OfficePSTN
(Chair) 510-642-0253 DeskIP dreadnaught.cs.berke
ley.edu555 LaptopIP polo.cs.berkeley.edu555 PCS
510-555-8778 Cellular 510-555-1998 E-mail
randy_at_cs.berkeley.edu Home 415-555-5555
An Entity has a universal name and a profile
Entities are people or processes
Profile set of domain-specific names
14
Wireless Link Management
  • Modeling GSM media access, link, routing, and
    transport layers
  • Validated ns modeling suite and BONES simulator
  • GSM channel error models from Ericsson
  • QoS and link scheduling for next generation links
  • High Speed Circuit Switched Data (HSCSD), General
    Packet Radio System (GPRS), and Wideband CDMA
    (W-CDMA)
  • RSVP signaling integration with bottleneck link
    scheduling
  • Reliable Link Protocols
  • Wireless links have high error rates (gt 1)
  • Reliable transport protocols (TCP) interpret
    errors as congestion
  • Solution is ARQ protocol, but retransmissions
    introduce jitter

15
New Services
  • Encapsulating complex data transformations
  • Speech-to-text, text-to-speech
  • Composition of services
  • Voice mail-to-email, email-to-voice mail
  • Location-aware information services
  • E.g., traffic reports
  • Multicast-enabled information services
  • Multilayered multicast increasing level of
    detail as number of subscribed layers increase

16
Simulated Ninja Environment
  • Speech is the ubiquitous access method
  • Access from millions of phones (analog to digital
    cellular)

17
Interactive Voice Response to A/V Devices
Application
  • First application Controlling A/V devices
  • Next application Personal Information Mgmt (PIM)

A/V Devices
Path
Room Entity
Text to Command
ICSI Speech Recognizer
Audio
Text
Cmd
Microphone Cell phone
Response to Client
18
Conclusions and Status
  • IP-based backbone for cellular networks
  • Mobility and service interoperability in the
    context of diverse access networks
  • Performance issues GPRS scheduling and IP
    scaling for mobile telephony applications
  • New services Smart Spaces and PIM
  • Large-scale testbed deployment is progressing
  • Automatic path creation
  • Service handoff Passing metadata across/through
    networks
  • IVR More applications and devices (WindowsCE)
  • Service location and discovery
  • RLP implementation in IP-PAD
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