Transcript Bredband – Kolla Titel!!!

Distributed Real-time Systems of Future
Dr Peter Parnes
011213
More General Devices than Today

Today, several different devices for different
things.
• Phone, Calendar, Hand-held computer
• They should/will all merge into one useful device
• Different carriers
Dr. Peter Parnes, CDT
2/9
Adaptive Applications

Able to handle different bandwidths
• Between 10Kbps to 100Mbps
• Adapt immediately

Must be error resilient
• Handle partial data
• Do re-transmissions on higher level
• Don’t transfer at bit-level but at application
level
Dr. Peter Parnes, CDT
3/9
Context Aware

Certain applications should behave
differently in different contexts
• Position-aware...
• ”Mentality”-aware...
• Is my calendar full with a long to-do list?
• Bandwidth availability aware...
Dr. Peter Parnes, CDT
4/9
Network Centric

Information should not be stored
ONLY in your hand
• Synchronize constantly with other hosts

”Standard” applications should be
available everywhere
• Phonebook, calendar, tasks,
• Borrow your friends device
• All you need is a digital key
Dr. Peter Parnes, CDT
5/9
Richer Real-time Communication

One or more of Audio, Video, Chat
• Depending on situation
• Audio not good when in meeting ;-)

Presence information (ICQ, Instant
Messenger, SIP)
Dr. Peter Parnes, CDT
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Less Provider Centric in the Mobile
We will see more mobile services
from different vendors
 Reason: user will use many different
access methods to reach services
 Services will target several access
methods

• E.g. Telia Friend Finder
Dr. Peter Parnes, CDT
7/9
Research



Reliable Multicast on Application
Level (not bit-level)
Congestion Control
User Interfaces
• small devices and wearable computing

Scalable media distribution
• Both up and down in quality
• Symmetric


Context awareness
Security & Privacy
Dr. Peter Parnes, CDT
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Discussion
Questions
and
Discussion
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