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System Architecture for IPbased Seamless and Ubiquitous Networks

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Facilitating load balancing regardless of user service location ... Mobile. phone /PDA. PC/Home. appliance. Sensor. Servers. Terminals. Ubiquitous. Platform. SONET ... – PowerPoint PPT presentation

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Title: System Architecture for IPbased Seamless and Ubiquitous Networks


1
System Architecture for IP-basedSeamless and
Ubiquitous Networks
Shiro Sakata NEC Laboratories
sakata_at_cd.jp.nec.com
2
  • 1. Network and IT Market Trend
  • 2. System Architecture for Ubiquitous Services
  • - Ubiquitous Platform -
  • 3. Application to Wireless Mobile Networks
  • Application to Photonic Broadband
  • Networks
  • 5. Standardization Issues
  • 6. Conclusions

3
1. Network and IT Market Trend
- Value shifts from core to user,
network to services - New business
opportunities with network and service
integration caused by deregulation
Unbundling network resources functions and
then on-demand rebundling
them in a multi-carrier environment
- Emerging Dynamic Collaboration in enterprise
systems through the integration of IT
and network technologies - Versatile
service support in a ubiquitous network
environment Requirement
for adaptation to a wide variety of networks and
terminals
Networks Wired broadband and wireless networks
(wireless LAN,
cellular network, adhoc personal area
network, sensor
network) Terminals PC,
digital home appliances/digital TV/home server,
PDA,
cellular phone, wearable terminal, embedded car
terminal
4
Potential New Business Model by Network
Unbundling Rebundling
Interoperability between different operators and
dynamic network resource allocation
Networks dedicated to individual operators and
user services
  • - NW resource virtualization
  • and brokerage
  • Service continuity and
  • portability
  • NW security and
  • traceability
  • - Policy management
  • ......

e.g, Virtual Network Operator(VNO)
Operators B
Storage service logical NW
Web service logical NW
Other ubiquitous Service logical NW
Content delivery logical NW
Operators A
Unbundling
Operator B
Operators C
Operator A
Operator C
Traditional Network
Future Network
(Bundled network resources)
(Resource rebundling adapted to individual
services)
5
Business activities in which an enterprise
enhances its own core competence and reacts
dynamically to drastic changes through the
flexible collaboration with partners
Development partner
Next Generation Management Style
Customers
Self-support of all functions
Enterprise A
Joint productization
Joint productization, Technology sharing
Outsourcing
Core competence (RD,Planning, Production)
Realtime Info. sharing Order management
Realtime info. sharing, Inventory management
Business function outsourcing
Logistics partner
Sales partner
6
Dynamic Collaboration through IT and NW
Integration- Multivendor Support for Customer
System -

- 24 hours, 365 days system support and on-demand
bandwidth utilization - Remote conference system
with tele-existence/virtual reality capability
Broadband VPN
Head office
IP Network
Call Center
Mobile VPN
Distributed Collaborative AP
VoIP
Customer
Customer Window
DB
Web
WEB I/F
Support Center
From overseas
VLAN VPN
Remote maintenance
Maintenance Center
Alliance partner
VLAN Virtual LAN
7
Ubiquitous Services over Versatile Networks
Terminals
Location/Presence Info. Service
Electronic Ticketing
Ubiquitous Services
Bidirectional Communication ()
Content Delivery
??
Storage Service
Home Control and Security ()
Versatile networks
Terminals
Servers
Cellular phone PDA Laptop PC Wearable
Terminal Home appliance Digital TV Home
server Sensors Car terminal
FTTH
Wired LAN
ADSL
Core Network
IMT-2000
MAN(Wide area Ether)
Wireless LAN
Wireless LAN
8
Bidirectional Communication
9
Home Control and Security
  • Robot-type Home server
  • User controls robot from outside through the
  • Internet
  • The robot controls home appliances with
  • IrDA, RFID, etc.
  • The robot automatically acts in accordance
  • with users presence

Example On the travel or on the way back
home - Confirmation of door locking -
Monitoring and taking care of pets,
gardens, etc. - Automatic video recording
- Warming bath when approaching the home
- Automatic switching-on of lights when
approaching the home
10
2. System Architecture for Ubiquitous Services
Network Technology Trend -
Increasing requirements for guaranteed multimedia
services in transition to all IP
networks Video streaming by CDN
(Content Delivery Network), IP phone,
Digital broadcast (data broadcast), etc.
- Higher-flexible and lower-cost enterprise
systems VPN(IP, SSL), wide
area Ethernet - Requirements for
Robust Secure open mission critical system
emerging into distributed wide-area
business environment - Emerging wireless
LAN and interworking with 3G cellular and
other networks for supporting versatile
ubiquitous services - Context Awareness
is a key term in ubiquitous services
context includes users situation such as
location, presence, preferences,
various sensed data, etc. -
Requirements for VoIP as a short-term killer
application End-to-End
QoS, e.g. small delay, low jitter, guaranteed
bandwidth Context transfer for
network-network roaming
11
Design Principles
  • 1. From best-effort to high-quality support in
    response to individual
  • service requirements
  • 2. Seamless service continuity in mobile and
    muti-network/carrier
  • environments
  • 3. End-to-end enhanced robustness and security
    in an open network

environment
Ubiquitous platform
as middleware - enabling on-demand network
resource allocation between different
operators
- providing robust secure capability
adapted to individual services
12
Ubiquitous Platform
(1) Application-Network Collaboration -
Dynamic network resource management and
allocation as requested by individual
applications Load balancing and
dynamic routing control Common
API(Application Programming Interface) for
accepting appli-
cation requests and network control interface
for network resource management
(2) Network-Network Collaboration -
Seamless interoperability between different
operators Roaming service
portability, common authentication (single
sign-on), etc. Media handover low latency
handover, audio video quality assurance
- End-to-end network control
GMPLS/ASON, NNI/UNI (3) Network Traceability
- End-to-end traceability
Enhancing robustness against cyber attacks and
system faults through TCP
session management
13
Ubiquitous Platform
Location/Presence Info. Service
Electronic Ticketing
Ubiquitous Services
Bidirectional Communication
Content Delivery
??
Storage Service
Home Control and Security
(1) Application-Network Collab.
Network node (Router, Switch, etc.)
Server
Terminal
API
Ubiquitous Platform
NCI (Network Control I/F)
Versatile networks
Terminals
Servers
Cellular phone PDA Laptop PC Wearable
Terminal Home appliance Digital TV Home
server Sensors Car terminal
FTTH
Wired LAN
ADSL
Core Network
(2) Network-Network Collab.
IMT-2000
MAN(Wide area Ether)
Wireless LAN
Wireless LAN
(3) Network Traceability
14
(1) Application-Network Collaboration
Background
  • Requirements for user service flexibility such
    as
  • on-demand network resource control, e.g.
    bandwidth,
  • session path, etc., have been increasing.

Required technologies
  • Enabling user service to submit requirements to
    network in
  • a heterogeneous operator environment
  • Easing of tight coupling between a user service
    and the
  • network control functions provided by the
    network
  • operator
  • Facilitating load balancing regardless
    of user service location
  • Optimizing the network resource selection
    and allocation adapted
  • to user requirements

15
(1) Application-Network Collaboration
Allowing to select best-effort or guarantee
on-demand for each service
Servers
Terminals
Internet connection
VoIP
CDN
VPN
Mobile phone /PDA
PC/Home appliance
Sensor
...
API
Ubiquitous Platform
Service requirements
Virtualization of network resource management to
services
Instruction to networks regarding resource
allocation
SONET
Wide-area Ether
FTTH
ADSL
PDC
IMT2000
Wireless LAN
  • Existing operators
  • New common carriers
  • Mobile carriers
  • ...

Conventional router
Router with ubiquitous platform
Networks
NCI (Network Control Interface)
16
(2) Network-Network Collaboration
Background
  • Service portability and continuity, e.g.,
    providing seamless
  • roaming and handover in a wireless
    environment, will be
  • achievable through the operator-to-operator
    collaboration

Required technologies
  • Network resource management for each session
  • Handover while holding network resources in
    an end-to-end
  • session without content quality
    degradation
  • High-speed network switching through context
    transfer
  • Exchanging network and service attribute
    information including
  • user authentication information between
    different operators

17
Assuring Service Portability and Media Handover

(2) Network-Network Collaboration
? Confirmation of Service
Continuity (Access rights, Resource, etc.)
? Context (Session Info.) Transfer
? Acquisition of Access Network As
Attribute
? Resource Allocation
Negotiation
Bandwidth AV coding Authentication Security
level etc.
Operator B
Operator A
? Restart based on Access Network As
Attribute in Access Network B
Roaming in Transport Level
Dual-mode phone
e.g., Wireless LAN
e.g., 3G Cellular
Move
18
Transition from Unbundling to Rebundling of
Network Resources
Operator A
Operator X
resources
resources

API NCI
.
Unbundle
decomposed
Resources are bundled
For service B
Rebundle for each service with resource
negotiation/brokerage, and resource management
virtualization to services
For service Y
19
(3) Network Traceability
Background
  • IP packet level monitoring has been becoming
    impossible
  • because of explosive traffic increase. TCP
    session level,
  • for example, monitoring is expected to enhance
    the security
  • in terms of traceability of attack sources,
    i.e. to facilitate
  • the attack source identification.

Required technologies
  • One of the possible solutions Segmentation of
    an end-to-
  • end TCP session into multiple TCP sessions and
    traffic
  • monitoring and access control at concatenation
    points.
  • Session access control at concatenation points
    enables the
  • protection from cyber attacks including
    DoS(Denial of
  • Service) attacks before such attacks reach the
    end user
  • node.

20
(3) Network Traceability
  • Quick Trace and Identification of Source of
    Attacks or Faults
  • Traffic monitoring and tracing TCP session
    by session, not IP packet-
  • wise
  • Shut-out of Attack or Fault-caused Traffic
    assuring Service
  • Survivability

Quick Trace and Identification of Source of
Attacks or Faults
Session Admission Control
TCP Relay Network
IDC
Connection Setup
IDC
Attacker
Unsuccessful Connection in case of Fraud IP
Unknown Intrusion Pattern Detection
Session concatenation
point
Attacker
21
3. Application to Wireless Mobile Networks
All IP Architecture (3GPP)
Circuit-switched Communication
CS Domain
Mobile Switch Server
ISDN /PSDN
GW Switch Server
Wireless Access (Cellular, Wireless LAN)
MGW
MGW
Data Communication
IP backbone
Mobile Packet Server (SGSN)
GW Packet Server (GGSN)
Internet
PS Domain
IMS (IP Multimedia Subsystem)
SIP Server
MGW Controller
Signaling GW
HSS (HLRAAA)
Application Server
CS Circuit Switched PS Packet switched
22
Integration of 3G and Wireless LAN
Communication area, Mobility, Portability
High speed, High quality
Wireless LAN
3G
Content Provider
ISP
ASPs
Internet Access
Content Delivery
User info., Authentication, Accounting
Enterprise Network
VPN
Internet
3G Service area
Hotel
Cafe
Station
Public Space
Airport
Hotspot
23
Integration Scenarios discussed in 3GPP
Feasible solutions in mid-term
Scenario 1 Common Billing and Customer Care
Scenario 2 3GPP system
based Access Control
and Charging Scenario 3
Access to 3GPP system PS based services
Scenario 4 Service Continuity
Scenario 5 Seamless Services Scenario 6
Access to 3GPP CS Services
24
3G - WLAN Interworking Scenarios
- Security level of 3G and WLAN are independent
- No new requirements on 3G spec.
1
2
  • AAA are provided by 3G system, e.g. EAP (EAP-AKA
    for GPRS/USIM and
  • EAP-SIM for GSM/SIM) is used for authenticating
    user by 3G server
  • Reuse 3G access control and charging principles
    (HSS/HLR, etc.) for the
  • benefit of 3G system operators and users

3
  • Operators grants access to 3G PS based services
    through WLAN
  • Service continuity between 3G and WLAN is not
    required
  • IMS based/location based/instant
    messaging/presence based services
  • Handover for specific services
  • Change of service quality in mobility across 3G
    and WLAN
  • Both service continuities between 3G WLAN and
    WLANs

4
  • Seamless service continuity and handover
  • Non-real-time services Mobile IP
  • Real-time services Fast Mobile IP protocols,
    Context Transfer protocol,
  • Access Router discovery schemes

5
6
  • Grant access to 3G CS based services through
    CSed WLAN access

25
Wireless LAN Solution Example
  • (1) Plug Service
  • - On-site real-time service download to
    mobile terminal
  • - Service description/registration/retrieval/
    discovery/creation
  • (2) Seamless Roaming
  • - Service roaming achieving
    WLAN(Hotspot)-WLAN or
  • WLAN-3G service continuity and eventual
    fast handover
  • - Authentication roaming achieving single
    sign-on in a
  • multi-network (WLANs and 3G) environment
  • (3) Privacy Protection
  • - Utilization of user profile information
    for personalized
  • services
  • - Privacy information description/negotiatio
    n/protection
  • based on W3C P3P (Platform for Privacy
    Preferences)

WLAN Wireless LAN
26
Public Wireless LAN Solution Image
3G service area
Service Providers
dual- mode

Mobile Terminal
Content Server

Wireless LAN
Local Server
Application Server
IP Network

Access Point

Wireless LAN
Local Server
Mobile Terminal
ISP Server
Hotspot
Laptop PC, PDA, etc.
including local content
(Station, Airport, Train, Hotel, Restaurant,
Café, etc.)
27
Middleware Architecture for Wireless LAN Solution
Local Server (Access Point)
Mobile Terminal
Remote Server
(Applications Content)
Applications Content
Applications
API
  • Plug
  • Service
  • Seamless
  • Roaming
  • Privacy
  • Protection
  • Plug
  • Service
  • Seamless
  • Roaming
  • Privacy
  • Protection
  • Plug
  • Service
  • Seamless
  • Roaming
  • Privacy
  • Protection

Protocols
Protocols
Middleware
NCI
IP
IP
OS Devices
OS Devices
OS Devices
3G, ADSL/FTTH
CSMA/CA (IEEE802.11)
Wireless LAN
IP Network
28
4. Application to Photonic Broadband Networks
  • Network/Transport functions need to be seamlessly
    controlled from services such as bandwidth on
    demand and VPN
  • ASON plays an important role for dynamic network
    resource assignment

Bandwidth on Demand, VPN
Service Support
Network Design Support
Network Design/Optimization, Full Turnkey
Service, Customization
Operation Support
Rapid Provisioning, Multi-Vendor Interoperability
QoS SLA
Protection
Integrated Management
Other Network Function
Plug Play
ASON Networking Software (NMS, EMS, NNI, GMPLS,
UNI, NE Software, etc)
Service Distribution
Wavelength Transport Service
Multi-Service Transport
Ethernet Transport Service
Core Network
ASON Automatic Switched Optical Network
29
5. Standardization Issues
OIF
  • Network control interface
  • Content caching, content adaptation (CDN)
  • - Network control interface

ITU
IETF
  • SIP, Presence service (SIMPLE)
  • Wireless-profiled TCP
  • Security (AAA, PANA)
  • Mobile IP
  • - GMPLS
  • Location info. management
  • - Digital rights management (DRM)

OMA
3GPP/ 3GPP2
  • Security (802.11i, 1x/EAP)
  • Roaming (802.11f)
  • QoS control(802.11e)

IEEE802.11
  • Privacy protection (P3P)
  • Web service (XML, SOAP, UDDI)
  • - xHTML

Digital broadcast
W3C
- xHTML
DVB (Europe)
ARIB (Japan)
ATSC (US)
30
6. Conclusions
  • Deregulation-caused potential new business
    opportunities
  • On-demand network resource control for
    individual services
  • Dynamic Collaboration for future enterprise
    environment
  • Support for wireless network-involved ubiquitous
    services
  • - End-to-end robust and secure capability
    enhancements

Ubiquitous Platform
All IP network - Wireless LAN - 3G - GMPLS
optical network
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