Ambient Networks Die Weiterentwicklung mobiler Netztechnik nach UMTS

31 March 2006FFV2006 - Ambient Networks 1

Ambient Networks

Die Weiterentwicklung mobiler Netztechnik nach UMTS

Andreas SchiederEricsson Research

This presentation has been produced in the context of the Ambient Networks Project. The Ambient Networks Project is part of the European Community's Sixth Framework Program for research and is as such funded by the European Commission. All information in this presentation is provided "as is" and no guarantee or warranty is given that the information is fit for any particular purpose. The user thereof uses the information at its sole risk and liability. For the avoidance of all doubts, the European Commission has no liability in respect of this presentation, which is merely representing the authors view.


Outline

AN architecture and basic concepts Network CompositionMulti-Radio AccessMedia DeliveryDissemination and outlook to phase 2


AN architecture and basic concepts


Validation

Reconfigurability

Quality of Service

User requirements

WWI Coordination Team

WWI Steering Board

Resilience

Security and trust

Operability

System architecture

Current WWI Integrated ProjectsCurrent WWI Cross Issues

WINNER E2RAmbientNetworks

MobiLife

WWI organisation in Phase I

Source: WWI Chaired by Ambient Networks

WWI Collaboration


Ambient Networks project phases

Phase 2 Phase 3

Establishing the Ambient Networks

Concept and its Feasibility

Technology Development

System SynthesisWork - Areas

IV: Prototyping

and Validation

Phase 12004-2005

Phase 22006-2007

Phase 32008-2009

I: Concepts and

Architecture

I: Concepts and

Architecture

II: Key II: Key Technical ProblemsProblems

III: Business Interfaces and

Commercial Viability

III: Business Interfaces and

Commercial Viability

Establishing the Ambient Networks

Concept and its Feasibility

Technology Development

System SynthesisWork - Areas

IV: Prototyping

and ValidationUsability/Networks

Test CasesUsability/Networks

Test Cases

Usability/NetworksPrototypes

Usability/NetworksPrototypes

Integration across WWI,

Validation,Market

Dissemination

Integration across WWI,

Validation,Market

Dissemination

Business Feasibility Business Interfaces Market Dissemination

Concepts &Architecture Design

Concepts &Architecture Design

Architecture:Scalability, Evolvability

Architecture:Scalability, Evolvability

Architecture,Standards

Architecture,Standards

Functions of ANControl Space

Functions of ANControl Space

Feasibility,Feasibility, Detailed Specification,Technical Development,

Performance

Detailed Specification,Technical Development,

Performance

Optimisation forPerformance

and Deployment

Optimisation forPerformance

and Deployment


Requirements posed on the AN Architecture

1. Heterogeneous Networks

2. Mobility

3. Composition

4. Security and Privacy

5. Backward Compatibility and Migration

6. Network Robustness and Fault Tolerance

7. Quality of Service

8. Multi-Domain Support

9. Accountability

10. Context Awareness

11. Extensibility of the Network Services Provided

12. Application Innovation and Usability


An Ambient Network and its links to the environment

AmbientConnectivity

NamingTraffic

Engineering

Multi-RadioResource

Management

AgreementEstablishment

ContextInformation

OverlaySupport

Layer

RoutingGroup

Information

AmbientAmbientNetworkNetworkInterfaceInterface

AmbientAmbientNetworkNetworkInterfaceInterface

AmbientAmbientServiceServiceInterfaceInterface

AmbientAmbientResourceResourceInterfaceInterface

Ambient Control SpaceAmbient Control Space

Reference Points


ACS Architecture


The Ambient Connectivity Abstraction

Connectiv

ity

Abstra

ctio

n

Connectiv

ity

Beare

rAbst

ract

ion

Ambient Network A

Flow Transit

Node

BearerIntermediary

Ambient Network B

Path

Flow

Flow EndpointFlow

Endpoint

Link

Applicat

ions

Application SessionApplication

BearerEndpoint

AmbientNetworkInterface

BearerEndpoint

“AN-node” “AN-link”“AN-node”


LD1(IPv4 Core)

LD2 LD3NR2

DNS

NR3

A B

DHT

DNS DNS

Nodes haveHIP-like

Node IDs,self-generated

public keys

Domains areconnected

by “NID routers”that route basedon destination

NIDs

At the core, we do not wanta global DHT of all nodes.

Instead, peer’s core NID router(NR3) is passed in the packets. A

small DHT can look up the locator of NR3.

End-to-end security

is based on NIDs.

Locator domainshave independent

address spaces

DNS retrievesNode ID of peer (B),

and Node ID of peer’score router (NR3)

Internetworking Architecture


Traits of the Internetworking Concept

Integrates local mobility, end-to-end mobility, and network mobility Even makes network-based multi-homing possible

A

A

B

(a)

A A

B

(b) (c)

A

BA

Initial handshake (~ HIP) provides an always-on security model; subsequent packets are protected

The handshake also has basic DoS protection Additionally, nodes can manage their NIDs and NID routers in a Hi3-like

manner to provide network-based DoS protection NIDs can be changed on the fly for privacy reasons, and NID routers

provide location privacy


Network Composition


Motivation for Composition

The central concept of Ambient Networks is Composition

Composition is… a uniform, dynamic procedure for network interworking on the control plane

Uniform procedure independent of network type and technology

Dynamic procedure minimize human intervention

Control Plane Interworking regarding routing, addressing, mobility, QoS, security, charging,..


Composition Use Cases Types of Composition

Network Integration• Involved networks merge into one common network

• E.g. creation of a PAN

Control Delegation or Control Sharing• One AN delegates certain control functions to the other AN

• 3GPP-WLAN interworking:WLAN delegates authentication, authorization and charging to 3GPP network

Network Interworking• Cooperation according to the Composition Agreement but no control

delegation

• E.g. dynamic roaming agreements Incr

easi

ng c

ontr

ol p

lane

coo

pera

tion


Composition - Standardization

The Ambient Networks Project established aStudy Item “Network Composition” in 3GPP SA1

TR 22.980 „Network composition feasibility study; (Release 7)”

Content Purpose and benefits of composition Use cases Requirement Composition Process New functionality in 3GPP networks Relation to other functionality in evolving 3GPP architecture

• AIPN,…


Multi-Radio Access


Research Concepts

Terminal

Access Provider

3G Radio 4G Radio

RelayingNetwork

RelayingTerminal

4G Radio

4G Radio

WiMAX

3G Radio

4G Radio

Multi-radio multi-hop

LocalAccess Provider

WLAN

Resource sharing with cooperating local access provider

Load management and instant mapping of data flows between accesses

Access Provider

WLAN

Resource sharing between cooperating operators

Simultaneous/seamless multi-operator access

( )


Dynamic Access Selection Algorithms

Taxonomy of AlgorithmsTime Scale of Access Selection

1ms 10ms 100ms 1s 10s 1min 1h 1d

Slow channel variations(shadowing, slow fading, cell change)

Stability of multi-hop routes

Fast channel variations(scattering, diffraction,

fast fading)

Slow load variations(new users / sessions, handover)

Fast load variations(interference, data bursts, user handover, ...)

Ty

pe

of

Ac

ce

ss

Se

lec

tio

n

Link Quality BasedAccess Selection

Load Based Access Selection

Fast Access Selection Slow Access Selection


Access Selection Results

“Slow” access selection “Fast” access selection

Timescale Order of seconds

Selection per flow

Order of milliseconds

Selection per IP-Packet or MAC-PDU

Selection based on

Averaged Link Quality (“Slow”)

Network/Cell load, …

Instantaneous link quality (“Fast”)

Complexity Moderate Complexity Complex with high monitoring load

Drastic changes to legacy link layers

Capacity Gains

15%-20% additional capacity

gains by considering load

(compared to signal strength only)

In hotspot scenario up to 50%

15%-60% throughput and spectral

efficiency gain

Signalling delay decreases

performance, especially if delay >

timescale of channel variations

User Gains 15%-80% average bit-rate gain by

considering load

15%-60% user throughput gain with

single RAT at a time


Media Delivery


Media Delivery using SSONs Establishment of Service-Specific Overlay Networks (SSONs) using

Bearers SSONs are independent virtual networks for every media delivery service (or

group of services) SSONs allow dynamically tailoring the network to the specific needs of a

service

Why do we need SSONs? Means to include network-side media processors into end-to-end media

delivery path Control application of media functions (where, how, which costs, etc.)

What do SSONs achieve? SSONs decouple the configuration of virtual networks from the underlying

network SSONs enable flexible configuration of virtual networks in terms of

• Topology• Addressing• Routing• QoS


Ambient Networks

Dissemination and outlook to phase 2


Standardisation

>30 contributions in totalIETF submissions to hip and nsis

several hip submissions for security extensionsNsis extensions

IEEE 802.21 submissionsTriggering framework submitted

3GPP SI „composition“Approved at TSG SA Meeting #30, 05 - 07

December 2005, supported by Siemens, Ericsson, Nokia, Vodafone, NTT DoCoMo, NEC


Structure of Work in Phase 2

Technical Coordination and Business Models

Mobility Management

Context, Policy and Network Management

Connectivity and Dynamic Internetworking

Service-aware AdaptiveTransport Overlays

Composition and CompensationANI

Mig

ration

& S

tand

ardisatio

n R

oad

map

Secu

rity

WP-H

WP-A

WP-B

WP-D

WP-E

WP-F

WP-G

WP-C

ASI

Multi-AccessARI Nam

ing

Arch

itecture

Integration&

Verification

Technical Coordination and Business Models

Mobility Management

Context, Policy and Network Management

Connectivity and Dynamic Internetworking

Service-aware AdaptiveTransport Overlays

Composition and CompensationANIANI

Mig

ration

& S

tand

ardisatio

n R

oad

map

Secu

rity

WP-H

WP-A

WP-B

WP-D

WP-E

WP-F

WP-G

WP-C

ASIASI

Multi-AccessARIARI Nam

ing

Arch

itecture

Integration&

Verification


Thank you for your attention! Questions?

www.ambient-networks.org

Ambient Networks Die Weiterentwicklung mobiler Netztechnik nach UMTS

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