how can users' interests be considered to improve content dissemination/retrieval?
DESCRIPTION
Content will have an important role in what concerns information dissemination and retrieval in Future Internet Architecture (FIA). This surely results in a new way of how communication takes place. Since content is correlated to interest of whomever produces and/or consumes it, considering the users’ interests to aid information exchange seem to be an interesting approach. Additionally, Delay-Tolerant Networks (DTNs) are expected to be part of these future architectures comprised by worldwide network. Thus, this presentation is on how users’ interest and DTNs can be part of the near future Internet. This presentation was given as a teaser topic in the 2nd Approaches to Paradigms of a Future Internet (API): The Role of the Information-centric Networking Paradigm on Future Internet Architectures, on Jul 9th, 2010, at Portugal Telecom Inovação, Aveiro, Portugal. http://siti.ulusofona.pt/~api/TRANSCRIPT
Campus da FEUPRua Dr. Roberto Frias, 3784200 - 465 PortoPortugal
T +351 222 094 000F +351 222 094 050
© 2010
How can users' interests be considered to improve content dissemination/retrieval?Teaser Topic
Waldir Aranha Moreira Junior
API 2nd Think-Tank Meeting, PT Inovação, Aveiro
2010-07-09
© 2010 2
Agenda
• What should the Future Internet Architecture be based upon ?• Are Delay-Tolerant Networks good for information dissemination/retrieval?• How to improve content dissemination in DTNs?• The role of social interests to improve content dissemination/retrieval
© 2010
What should a future internet architecture support?• Intermittent connectivity, since it is common to find:
– Long propagation and delay times: e.g., very long distances– Disperse nodes: signal attenuation as the square of distance– Power-limited mobile devices and interference zones: high packet loss
• Global communication:– Each network should be adapted to a particular communication region– Spanning more than one region requires specialized translation and
buffering agents
The concept of Delay-Tolerant Networks• No assumption of existing e2e path• Cope with different networking regions• Exploit user mobility• Applicable in sparse and dense scenarios• Deal with multiple time-varying links with frequent partition and high delay
What should a future internet architecture support?• Intermittent connectivity, since it is common to find:
– Long propagation and delay times: e.g., very long distances– Disperse nodes: signal attenuation as the square of distance– Power-limited mobile devices and interference zones: high packet loss
• Global communication:– Each network should be adapted to a particular communication region– Spanning more than one region requires specialized translation and
buffering agents
The concept of Delay-Tolerant Networks• No assumption of existing e2e path• Cope with different networking regions• Exploit user mobility• Applicable in sparse and dense scenarios• Deal with multiple time-varying links with frequent partition and high delay
3
What should the Future Internet Architecture be based upon?
© 2010
It has great potential in any type of network density• Sparse Networks (e.g., rural areas, space networks)• Dense (e.g., urban areas)
Supports Publish/Subscriber Paradigm• Prosumers: content provision/retrieval• Separation of content creation and consumption
Supports Store-Carry-Forward Paradigm• Opportunistic routing in challenge environments• Massive infrastructure deployment based on personal
devices
Real-time ?
• Depends on the tolerance level• Some communication is better than no
communication at all
It has great potential in any type of network density• Sparse Networks (e.g., rural areas, space networks)• Dense (e.g., urban areas)
Supports Publish/Subscriber Paradigm• Prosumers: content provision/retrieval• Separation of content creation and consumption
Supports Store-Carry-Forward Paradigm• Opportunistic routing in challenge environments• Massive infrastructure deployment based on personal
devices
Real-time ?
• Depends on the tolerance level• Some communication is better than no
communication at all
4
Are DTNs good for information dissemination/retrieval ?
© 2010
Focus on multi-point communication algorithms• Current work focus on point-to-point communications
Make intelligent usage of contact opportunities• Increase data delivery probability• Reduce communication delay and cost (e.g., information duplication)• Some metrics: mobility based, social based
Make good usage of available cooperation levels• Between users
• Willingness to share resources (Store-Carry-Forwarding)• Incentives: so-wanted anytime/anywhere connectivity
• Regarding infrastructure• Legacy and DTN nodes• Work together to increase their coverage
Focus on multi-point communication algorithms• Current work focus on point-to-point communications
Make intelligent usage of contact opportunities• Increase data delivery probability• Reduce communication delay and cost (e.g., information duplication)• Some metrics: mobility based, social based
Make good usage of available cooperation levels• Between users
• Willingness to share resources (Store-Carry-Forwarding)• Incentives: so-wanted anytime/anywhere connectivity
• Regarding infrastructure• Legacy and DTN nodes• Work together to increase their coverage
5
How to improve content dissemination in DTNs?
© 2010
Data dissemination depends on:• Intelligent replication of information• Timely delivery of information to interested people
Timely delivery of information: social entanglement• Forwarding to nodes with high probability to meet the destination• Formation of communities (number of contacts and contact time)• Statically defined and based on very subjective metrics (Interests)• Difficult to translate real social information (Interests) into the communication world
Intelligent replication: targeting interested users only• Publish/subscriber paradigm• Users sharing interests spend more time collocated
Important questions• How can interests be mapped into metrics to aid dissemination ?• How detailed interests should be ?• Do we run the risk of “spamming” users with unwanted content ?
Data dissemination depends on:• Intelligent replication of information• Timely delivery of information to interested people
Timely delivery of information: social entanglement• Forwarding to nodes with high probability to meet the destination• Formation of communities (number of contacts and contact time)• Statically defined and based on very subjective metrics (Interests)• Difficult to translate real social information (Interests) into the communication world
Intelligent replication: targeting interested users only• Publish/subscriber paradigm• Users sharing interests spend more time collocated
Important questions• How can interests be mapped into metrics to aid dissemination ?• How detailed interests should be ?• Do we run the risk of “spamming” users with unwanted content ?
6
The role of social interests to improve content dissemination/retrieval
Campus da FEUPRua Dr. Roberto Frias, 3784200 - 465 PortoPortugal
T +351 222 094 000F +351 222 094 050
© 2010
How can users' interests be considered to improve content dissemination/retrieval?Teaser Topic
Waldir Aranha Moreira Junior
API 2nd Think-Tank Meeting, PT Inovação, Aveiro
2010-07-09