4 w mobility-wpmc2008-final
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Mobility Scenarios for the Future Internet: The 4WARD Approach
Michael Söllner, Alcatel-Lucent DeutschlandCarmelita Görg, University of Bremen, Germany
Kostas Pentikousis, VTT, Technical Research Centre of FinlandJose Mª Cabero Lopez, Robotiker Tecnalia Spain
Miguel Ponce de Leon, Waterford Institute of Technology, IrelandPhilippe Bertin, France Telecom
SS3: Mobility Challenges in the Future Internet
10.Sept.2008 WPMC’08 – SS3© 4WARD Consortium 2008
Theme Mobility/Slide 2
Outline
Requirements/Challenges for a Future Internet 4WARD Approach Towards a Network of Information What Virtualisation can do Connectivity and Architectural Challenges Summary
10.Sept.2008 WPMC’08 – SS3© 4WARD Consortium 2008
Theme Mobility/Slide 3
Major trends in the next decade and their relation to the Internet
Technology Environment: Multitude of networked/distributed applications beyond Web2.0 – flexible and participatory – user and provider are widely interchangeable/dynamically attached roles
Social-Economic Environment: Awareness of demographic change in an aging society (Europe and others)
– Significant percentage of people beyond the age of retirement– Few young people – need for efficient high-level education– Shortage of labour force – need for automation and increased efficiency
“Information” centric rather than “bit” centric at the network level Integrated support of mobility
– Wireless access, optical backbones– Communication everywhere– Infrastructure to support trade and industry– New services – new devices – new interactions
Security that nevertheless keeps the generativity of the network intact Low cost to access, deploy and operate evolvable and interoperable networking infrastructure
(architectures) Current evolution attempts by “patching the Internet” often violating
fundamental Internet design principles will lead to a dead end
10.Sept.2008 WPMC’08 – SS3© 4WARD Consortium 2008
Theme Mobility/Slide 4
What is the 4WARD approach to Future Internet ?
„Future Internet“ is used to denote the vision for a next generation of services, content and networks (next decade(s))
4WARD is focusing on the network aspects of the story Clean-slate approach:
– "With what we know today, if we were to start again with a clean slate, how would we design a global communications infrastructure?"
A clean-slate networking approach is an ambitious uphill race– Legacy, legacy, legacy,...– Services, services, services ... – No garage around - can a revolution be created in an European project?
Status: – Project phase1 started 2008, for 2 years– Requirements have been set up,
screening and directing technical research to an innovative holistic approach,non-technical aspects (usage, socio-economics, policy, governance, regulation)
– A couple of scenarios have been developed to experience the Future Internet from a users and operator‘s perspective
– Further focus on consolidating the visions towardsdiverse, but dependent solution concepts and their assessment
10.Sept.2008 WPMC’08 – SS3© 4WARD Consortium 2008
Theme Mobility/Slide 5
Architectural framework coordination Concepts, terms, and basic framework
constructs Architectural tradeoffs and design
patterns Integration, evaluation and validation
Management of Virtual Networks ( Task 3.3)
Provisioning of Virtual Networks ( Task 3.3) (aggregate “slices” and form virtual networks)
Substrate
Virtualised substrate
Virtual Network Virtual Network
Virtualisation of Resources ( Task 3.2) (partitioning of physical infrastructure into “slices”)
split/balance
merge/network code
decode
joincodecooperatively
Generic path 1Generic path 2
split/balance
merge/network code
decode
joincodecooperatively
Generic path 1Generic path 2
A
CE
B
A
B
E
AC
A
E
B
A
D
E
AD
E
E
B
D
D
A
CE
B
A
B
E
AC
A
E
BB
AA
BB
EE
AACC
A
E
BB
AA
DD
EE
AADD
E
E
B
DDD
D
Generic Connectivity:
Network of Information:
Virtualization of Networks:
Providing abstractions and a framework for a self-organising management plane.
Design and implement a thin pervasive self-organising network management plane
In-Network Management:
New Architectural Principles and Concepts:
4WARD Research Directions
10.Sept.2008 WPMC’08 – SS3© 4WARD Consortium 2008
Theme Mobility/Slide 6
4WARD Overall Technical Requirements *
The 4WARD Project will provide an Architecture Framework, i.e. a family of dependent architectures (not a single architecture), satisfying the following requirements:
Ubiquity: Aiming at a global communication system that has the potential to embrace the facets of current and future Information and Communication Technologies (ICT), i.e. telecommunications, data communications and the “internet of things”, on an ubiquitous basis.
Diversity and Extensibility: Supporting diversity and a high degree of heterogeneity in different technologies, thus allowing for specialised and customised network architectures to support their specific requirements.
Information-Centric Networking: Focus communication services for users and applications that are centred on the creation, search, lookup and retrieval, distribution, and management of information objects
Mobility: Support mobility of its users or user components, information objects and related resources as an integral built-in functionality
Inter-Provider/Domain Support: The 4WARD Framework shall allow to organise 4WARD networks in various administrative (physical or virtual) domains each governed by its own provider.
Interoperability: 4WARD Networks based on possibly different architectures shall interoperate efficiently such that functionality and usage of services/resources/objects etc. is provided across network boundaries.
Scalability: allow a very high degree of scalability regarding the number of involved components. The naming and addressing concept shall allow unambiguous identification of “zillions” of devices, (information) objects, and “things”.
“Green” Network: designed, realised and operated in a way to make efficiently use of natural resources (which includes, of course, energy-awareness). *) Extract from Deliverable 2.1 Technical Requirements
10.Sept.2008 WPMC’08 – SS3© 4WARD Consortium 2008
Theme Mobility/Slide 7
Specific Mobility Requirements Identified
Service provisioning for mobile entities: an integral built-in functionality that preserves reachability, connectivity, quality of service, and security relations as far as possible without (functional) deduction compared to fixed entities’ access.
Mobile entities can be persons, application processes, terminal devices or abstract information objects, also end nodes, supporting intermediate nodes or network resources.
Simultaneous attachment of mobile entities to multiple 4WARD Networks shall be possible at any location covered by 4WARD Networks (multi-homing).
Service continuity: Means to maintain the (possibly virtual) communication relation of a user entity to a 4WARD network during relocation over space and time, according specified levels of quality of (service) experience that could range from “seamless” (handover without noticeable interruption), “loss-less” (without data or information loss) to “nomadic” (delay or disruption tolerant) experience.
Separation of mobile naming and addressing: separate identifiers for mobile entities from locators of their actual location.
Locality of network capabilities: provide a measurable notion of proximity and locality for user and network entities and their capabilities.
Heterogeneous access and physical layer awareness: Mobility across heterogeneous access technologies, easily extensible even to future technologies and 4WARD architectures.
Virtual network support: Mobility within the 4WARD Framework may be realised based on physical or virtualised networks.
10.Sept.2008 WPMC’08 – SS3© 4WARD Consortium 2008
Theme Mobility/Slide 8
Overcoming Today‘s Complexity inMobile Scenarios
Heterogeneous (Physical) Connectivity
Roaming between operator domains Tracking (reaching mobile terminals) Handover between
heterogeneous technologies – Horizontal handover – Vertical handover
Topology awareness
Terminal mobility Personal mobility Service mobility Session mobility
Interoperability of various systems:– Cellular networks– WLAN, WiMax, Wireless Mesh– Adhoc networks, MANET, VANET– Wireless Sensor Networks– Fixed networks and broadcast
10.Sept.2008 WPMC’08 – SS3© 4WARD Consortium 2008
A fresh look to communication systems:Networking of Information
TelephonyInterconnecting wires
4WARDFuture Internet
Interconnecting information
InternetInterconnecting nodes Future
Internet
Future Internet
Folding Point
Terminal
Terminal
Forwarder
Terminal
Evolution
Virtualization ofnetwork resources
10.Sept.2008 WPMC’08 – SS3© 4WARD Consortium 2008
Theme Mobility/Slide 10
Jari‘s Collaboration Network:access to enterprise information,
office environment, business email
Jari‘s Home Network:access to private MP3,
photo and video collection;
monitoring home automation functions
Abstract View of Mobility Scenario: Jari in the centre of his „information space“
Jari driving in his car, while being connected to various virtual communication networks
The network of information (NetInf) keeps track of his dynamic communication relations
Jari‘s Virtual Information Object:
different roles, functions, network attachments and physical identities
Virtual Information Sharing System:
Disseminates video streams from broadcasters,
news, entertainment, MP3++, 3D virtual reality
Virtual Vehicular Traffic
Information System:moving with Jari‘s car;
providing context information of roadside sensors,
and related route information
Virtual Community Network:
buddy list, presence, messenger, push-to-talk,
high quality VoIP and video/virtual reality services ,
Jari@abc
Jari@my_xyz.eu
Jari@491701234
Jari‘s telecom provider, „physical“ cellular service
inactive
inactive
10.Sept.2008 WPMC’08 – SS3© 4WARD Consortium 2008
Theme Mobility/Slide 11
Jari, Who the Heck is Jari?
Jari has a Skype, MSN, Yahoo, AIM, “you-name-it” VoIP client running on one of his devices
Jari also has a mobile phone A NetInf Information Object (IO) maps
the “real world” subject/object to its digital (physical) instantiation/realisation
So when Maria looks up “Jari” in NetInf,
she gets back the information object which points to Data Object (DO)
– His various IM/VoIP/… “identifier” or DO– His cell number (another “identifier” or
DO)– And other possible info (his web page,
travel plan, RSS feed, … )
10.Sept.2008 WPMC’08 – SS3© 4WARD Consortium 2008
Theme Mobility/Slide 12
How it could work...
InfObj„Jari“
DataObjJari‘s
mobile id
DataObjJari‘s
Skype id
InfObj„Maria“
DataObjMaria‘s mobile id
DataObjMaria‘s Skype id
InfObj„Maria calls Jari“
DataObjVoIP call via Skype
DataObjmobile call
persistent persistent
temporary,transient
„virtual call object“able to switch between different „physical“ realisations of generic paths
Network of Information
Physical Generic Path Connectivity
DataObjMaria‘s locator
DataObjJari‘s locator
dynamic dynamic
A B
InfObjGP from A-B
corresponding attachment
corresponding attachment
path representation as InfObj
10.Sept.2008 WPMC’08 – SS3© 4WARD Consortium 2008
Theme Mobility/Slide 13
A Multiaccess Communication Scenario
The scenario applies to dissemination and non-dissemination objects
– Dissemination is defined not on an encoding or protocol basis
– Web, Internet radio/TV, RSS, and so on, are dissemination objects
– Internet banking, VoIP call, mailbox are non-dissemination objects
Scenario (and topology figure) covers
– Web, BitTorrent, A/V streaming, VoIP, ...
– Communication with a multiaccess/multiapplication device (Maria)
– Communication with a user having multiple devices (Jari)
10.Sept.2008 WPMC’08 – SS3© 4WARD Consortium 2008
Theme Mobility/Slide 14
How Mobility is integrated in 4WARD
• Network architecture prototypes
• Generic design patterns• Rules for deriving special
purpose architectures (components, functions, protocols)
• Guaranteed properties (interoperability, overarching mobility)
• Means to create and operate (customized) virtual networks
• Maps new architectures, protocols to shared physical network components (nodes, links)
• Isolation of concurrent components
• Virtual mobile networks vs. mobile virtual networks
Network of Information
Generic Connectivity
New Architectural
Principles and Design
Virtualisation
• „Generic Path“• Covering (physical)
end-to-end transport and network routing
• multipoint-to-multipoint connectivity
• multipath routing• efficient cooperative
transmission• physical mobility of
endpoints (dynamic add, delete, move ...) and paths
• „Networked information objects“ irrespective of location and time
• manage distributed information
• search and name/address resolution by „content“
• (physical) storage of data chunks
• procedures to route and rebuild information content
• mobile / mobility objects
10.Sept.2008 WPMC’08 – SS3© 4WARD Consortium 2008
Theme Mobility/Slide 16
From Virtual Mobile Networks to Mobile Virtual Networks
Virtual Mobile Networks– Purpose: sharing of physical resources between networks/providers,
decoupling of “service” evolution from evolution of “physical” technologies– Example: infrastructure sharing of cellular MVNO– Infrastructure-based network:
• static network where the only mobile entities are the end-users• sharing of access points/bas stations and wireless interface
– Infrastructure-less network: • mobility is intrinsic to the network. • Virtualization at:
– Node level: working as end-user and network resource, i.e. as middle node. – Access Point (AP) level: this is the attachment point to the network.– Wireless medium level: As a mean to let different VOs operate the same PHY substrate.
Mobile Virtual Networks– Purpose: focus on sharing a common service/application,
keep complexity of communication relation out of application space– Example: “Skype” over cellular, file-sharing over cellular– Mobility of physical resources that comprises mobility of end-users, network resources and whole
(moving) networks. – Mobility of virtual entities.
• A virtual network can decide to change its virtual topology depending on different metrics (neighbourhood relation, balance of traffic, CPU usage…).
• Only virtual entities move from one physical location to another.
10.Sept.2008 WPMC’08 – SS3© 4WARD Consortium 2008
Theme Mobility/Slide 17
Architectural Challenge Ahead: Interoperability and Core Feature Integrity
• Many architectures of today do not relate core functions such as Mobility, Security and QoS with each other (e.g. IETF building block approach). Other architectures integrate them, but in a static, monolithic way (e.g. 3GPP).
• Example: IPsec simultaneously together with DiffServ and MobileIP seems not easily feasible
• The dynamic integration of Mobility, Security and QoS and interoperability is the focus of the architectural design of future communication system
Mobility PropertiesSecurity Properties
QoS Properties
Interworking Properties
QoSrelatedinform.
Mobilityrelatedinform.
Securityrelatedinform.
10.Sept.2008 WPMC’08 – SS3© 4WARD Consortium 2008
Theme Mobility/Slide 18
Summary
4WARD is aiming at an architecture framework for a Future Internet – evolving telecommunication, data communication and the „network of things“
towards a „network of information“– with integrated, overarching mobility, security and QoS capabilities as needed– with scalable concepts applicable from smallest scenarios to global scope– coexistence and interoperability of micro- to macro-operators – extensible to future needs
Leveraging diversity at several stages:– multitude of architectures with customized focus and assured interoperability– virtualised networks enabling self-paced evolution of networking – generic path connectivity across technologies and scales (e2e, access to
core)
Detailed solution concepts and assessment in 2009 For more Information, see www.4ward-project.eu