content-centric networking media drivers and network research challenges miguel rio dept of...
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Content-Centric Networking
Media Drivers and Network Research Challenges
Miguel RioDept of Electronic & Electrical Engineering
University College London, UK
Drivers For Change
• Low Energy Economy
• Cheaper Input/Output Devices
• Faster Networks
• Cheaper Memory
• Traditional Media will fight back for survival
CCN for Just in Time Media Objects
• We need to shift from connecting end nodes to connecting users to content
• As memory prices come down, routers will be able to play a bigger role here. The borderline between routers and servers will be blurred. Routers may become more cross-layer
• New router level algorithms and protocols need to be developed to locate and retrieve content much more efficiently
Content Object
Media
Rules
Behaviour
Relations
Characteristics
Object Execution/Handling
Environment
Distributed Object Search• Today’s Search market is centralised.
• This is often inefficient and does not create the right incentives to expose meta-data
• Distributed Object search will change this. Content producers/replicators may want to hold the meta-data.
• Time to index will be reduced but algorithms will be complicated!
Multi-Stream Objects
• The types of media available will increase: 3D, multi-sensory, generated by several viewpoints (potentially by several people)
• Coordination and Synchronisation of this data in real-time is a major challenge
• In other words: how to implement the relations between media objects is an important issue for CCN
Location Based Media Objects
• Lots of content will be displayed with a dependency on the location of the user
• User mobility and fast content retrieval need to be part of the Content-Centric Internet infrastructure
Personalisation and Rating of Objects
• With the “end of broadcast”, users will want more personalisation (both on content and on advertisement)
• Efficient content and user ratings will be crucial, potentially using social networks
Privacy Protection
• Personalisation brings an increased danger of loss of privacy
• Despite some evidence from online social networks that privacy is overrated, we believe that many people in many scenarios care seriously about privacy
• Creating Privacy Preserving Services embedded in the Internet Fabric should be a research priority
QoE Accountability
• Another aspect that needs to be seriously considered as part of the Internet Fabric is open e2e monitoring and QoE accountability
• Although we have the technology to implement QoS, competition in the ISP market is not efficient because of lack of transparency/accountability. The user does not know who to blame and has no QoS information to compare services