Get documents about "Wireless Next Generation Network by Prof
Document Sample
Wireless Next Generation
Network
Prof. Dr. Norsheila Fisal
MIMOS UTM CoE
Universiti Teknologi Malaysia
Skudai 81310
Johor Darul Takzim
Outline of presentation
• NGN
• Beyond 3G
• Technology convergence
• Introduction to Personal Networks
• Personalising and adapting to the user and
the user’s situation
• Security issues in Personal Networks
• Key technologies enablers
• Future Wireless Internet
Definition of NGN
The Evolution of NGN
Protocol of NGN(IP+SIP)
Powerful Service
NGN Solution (IP based)
Future Wireless Communication
2G - driven by voice
3G - driven by video and TV
4G - driven by
low cost high speed data
service & application ubiquity (pervasive
computing)
personalization & synchronization
machine-to-machine transmissions (sensors)
Convergence of technologies
Towards Pervasive Computing
Beyond 3G?
B3G is defined as the integration of existing
systems to interwork with each other and
with a new interface.
Pers stands for Personalization
Convergence is really what 4G is all about!!
Multiple Convergence Concept
Satellites and
broadcasting
HAPS
PANs and BANs
Personalization,
•Global Interactive
Global interactive context, location,
•communication system presence, security,
and identity
(4G)
•(4G)
FWA and wired
communications
Cellular-based
WLANs, such as
systems, such as 2G,
IEEE 802.11a,
3G, and beyond 3G
HIPERLAN 2, and
MMAC
Terminal Convergence
4G The flying screen concept
brings together the familiar
screens of
• TV
• PC (Internet)
• Mobile Phone
into a single wireless device
• anywhere
• any time
• any content
Networks Convergence
Overview of hetererogeneous networks
4G
Satellites
Satellites fully IP-based integrated system
High Altitude Platforms (HAPS)
High Altitude Platforms (HAPS) of systems and network of networks
Cellular Networks
Cellular Networks
(GSM, UMTS etc)
Broadband Fixed
Broadband Fixed
Wireless
Wireless
All-IP
Access (BFWA)
Access (BFWA)
WPANs/
WPANs/
WSNs
WLANs
WSNs WLANs HAPS Satellites
20 m 20 m
Wired Backbone
100 m
100 m
~1 km
~1 km GPRS
GSM BFWA
UMTS
WLANs
Few km
Few km WPANs
Few km
Few km
Definition of a heterogeneous network: A network
connecting computers and other devices with
different operating systems and protocols
Vision of personalized services
Client-to-client/
CC/PP
Peer-to-peer
GUP
General Advanced
User User Profiles
profile & Preferences Adaptive Personal
Profiles Proactive
Services
Service Context
Discovery Learning
Presence Intelligent
Location Sensor Bio-Sensors Smart Dust
Location Environment Networks
Sensors
Semantic
Content
Processing
Service
QoS Adaptation
Content Adaptation
Filtering
Adaptive
Media Presentation
Transcoding
2002 2004 2006 2008 2010 >>
PAN, PN and PN Federation
Personal Area Network (PAN):
Grouping of devices within close
vicinity of the user Remote personal devices
PAN
Personal Network
Home network
Personal Networks (PN):
System approach to Personal Networks
Local foreign devices
Interconnecting structure
satisfying users’ needs
S,
(Internet, UMT WLAN, Ad Hoc, Corporate
network
Smart building
PN3
Vehicular area
network
P-PAN PAN
Home network
Home network
PrivatePAN (P-PAN)
(P-PAN)
Remote foreign devices
Introducing PN Federation: Interconnecting structure
Corporate
network
Grouping of PNs with the objective of
achieving a specific common goal, incl. Vehicular area
network
temporary ad-hoc groupings, e.g. PN1
PN2
Distributed Work.
PN applications
smart@home health.care nomadic@work
• Office environment • Doctors, nurses, patients at • Journalists/mass media
• Smart shopping hospitals in cooperating • Students work situation
• Family members and networks • Researchers in cooperating
friends sharing PN’s • Ambulance and medical staff on projects
the move
• Surveying of recovering patients
PN federation applications
PN3
Interconnecting
structure
PN1
PN2 PN4
Sharing resources Emergency situation
Personal Network System
The integrated architectural
description
in terms of three abstraction levels:
– Service
Service discovery and
management in P-PAN and PN
– Network
Formation and maintenance of
P-PAN and PN, and Naming
and
addressing.
– Connectivity
Heterogeneous radio domains
with layer 2 connectivity
Personal Network System
The Higher Layer Perception
- Gives the rise to the
connectivity layer
Data Channel Perception
- Control and data channels
MAC Control Channel
Perception
- Radio Resource
Management etc.
Physical Perception
- Layer 1
Convergence
Mapping the PN concept onto the OSI
reference model:
Application Application Application Service
Presentation
Session
Transport TCP/ UDP TCP/ UDP
Network
Network IP IP
LLC
Data link Data link
MAC Connectivity
Physical Physical PHY
OSI Reference Internet
PN Architecture Abstraction Levels
Model Architecture
Layerless communication
Less Layers
Lesser Layers
Less Lesser Layers
Layerless Communication
Transparent Layer Communication
or
Cross Layer Design
Cross Layer Communication
• Avoid Layering Concept
– Exploit the dependency between protocol layers to
obtain performance gains
– Direct communication between protocols at
nonadjacent layers or sharing variables between layer
Optimization Abstraction
• Cross-layer Design for Wireless Mobile Network
– Create new interfaces between layers, redefine the
layer boundaries, design protocol at a layer based on
the details of how another layer is designed, joint tuning
of parameters across layers, or create complete new
abstraction
Cross Layer Design Proposals
Adapting to the context of the user
Ctx. Mgmt. Framework Context Aware
Services,
Context Retrieving
Applications
Sources Processing and network
Storing components
Exchanging
Serving
Discovering, maintain and providing context information is
a key issue in achieving true context awareness
Adapting security levels
Security level is influenced by its context, e.g.
Device capability and resources, which may be limited
What implications will it have, if the data is being stolen, tampered with etc.?
◦ Type of application used
◦ What data is transferred
What means of communication am I using?
To be or not to be trusted
Trust comes in many forms!
And plays an important role in (federated) PN’s
Do we trust this guy?
Ensuring privacy
• Big brother is watching???
– Or is it my neighbour?
• How do we achieve system and service
level adaptation while ensuring privacy?
Evolution of Mobile Technology
New Key Solutions
Requirements Flexible
spectrum usage
Increased Capacity and
Low latency
Adaptive system
Advanced
Traditional
TX & RX
Wireless
Increased high schemes
data rate coverage and Advanced
Antennas
Low deployment
cost (many scenarios) Ad-hoc solutions
and optimized radio
interfaces
Personalization
Mobile terminal
convergence; open
service platforms;
Security solutions
Enablers for 4G
Efficient Spectrum Usage & Sharing
(Cognitive Radio)
OFDM and MIMO (SDR/SR)
IP Mobility (IPv6, SIP)
Fixed Mobile Convergence (IMS)
Chaching Technologies (Multihop Ad Hoc)
Coverage for multiple technologies
(Convergence) :
◦ Parent (Cellular 3G, WiMax)
◦ Discontinuous pico/femto cell
Future Internet
The Future Internet, which is anticipated to provide
futuristic functionalities beyond the limitation of the
current network. We see a growing demand for
following features:
Scalability, security, mobility, Quality of Service
(QoS), robustness, heterogeneity, economic
incentives, etc.
Also, the Future Internet will be more deeply
integrated and composed with new emerging
technologies and services
E.g., Intermittent network, DTN (Delay-Tolerant
Network), vehicular/airborne network, programmable
and cognitive networks
FUTURE WIRELESS NETWORK
Internet vs Future internet
Network Virtualization
De-ossifying the current Internet
Multiple virtual networks co-exist on top of a shared
substrate.
Different virtual networks provide alternate end-to-end
packet delivery systems and may use different
protocols and packet formats.
Easily programmable
Can experiment on any level (physical to apps)
Internet vs DTN
New Design Goal
• Scalability
• Security
• Mobility
• Heterogeneity
• Quality of Service
• Customizability
• Robustness
• Economics
Network Architecture
Data Oriented Network Architecture
– Data dissemination rather than p2p conversation
Autonomic Communication
– Manageability
Bio-Inspired Network
– Use biological concept for network,
• Service generation with natural selection/ evolution
• Security with immune system
Opportunistic Communication
– Send packet according to the link condition
– Store & forward (eg. DTN)
I3
– Mobility
– Internet indirection infrastructure
Diverse E2E Communication
Original E2E
Concerned with end-to-end services and protocols
implemented in hosts, such as transport protocols and
implementation architecture for high performance.
• e.g., presentation layer design, application-layer framing, high
performance host interfaces, and efficient protocol implementation
techniques.
EME (End-Middle-End)
While still end-to-end in many ways, connection establishment
in the Internet today involves state and functionality in the
middle in the form of NATs, firewalls, proxies and so on.
The current Internet architecture does not reflect this resulting
in a mismatch between design and practice.
There are some signaling based solutions to connection
establishment
Current Research
Cognitive Network
◦ Cognitive Mesh Networking (WiFi, WiMax)
◦ Autonomous Network (WSN)
Cognitive Radio (UWB, WiMax)
◦ Multiband OFDM MIMO UWB
◦ Cooperative Sensing
◦ Distributed MAC
◦ Adaptive/Joint Coding
◦ Software Defined Radio (SDR)/Software Radio
(SR)
Current research
Wireless Sensor Network
WBSN
Multimedia WSN
WSN Satellite Networking
Internet Multimedia System (IMS)
Location Tracking
SIP and soft-switching
IPv6 WSN (6loWPAN)
Routing & Mobility
Intelligent Transport System (ITS)
THANK YOU
Related docs
