AMI Platform

Autonomic and responsive communication / network fabric

Dynamic association in wireless mesh networks

Objective

  • Extend association mechanisms of WLANs to Wireless Mesh Networks (WMNs).
  • Avoid common association problems and take into account WMNs’ specific characteristics.

Issues

  • Expand on RSSI based association.
  • Mitigate hot-spot congestion.
  • Detect traffic load in real-time.
  • Association oscillation avoidance.
  • Accelerate network convergent speed.

Approach

  • Cost metric to dynamically determine optimal association.
  • Periodic probe broadcast frames.

User-centric cross-layer design and optimization

Objective

  • Derive user layer and model as part of protocol stack
  • Investigate influence of user layer on cross-layer optimization
Issues
  • Improve users’ satisfaction and meet dynamic requirements.
  • Empower users to control and influence network resources based on behavior and capabilities.
  • Optimization of network resource at access link side in terms of user Perceived Quality of Service(PQoS)
Approach
  • Define user layer and its attributes.
  • Identify key parameters to influence resource allocation to meet user PQoS.

Distributed data caching and management

Intelligent peer-to-peer caching

Objective
  • Develop an intelligent and scalable peer-to-peer data caching & management system for ubiquitous sensor data.
Issues
  • Optimal data mining & discovery algorithms
  • Maximise information value.
  • Minimise cache size requirement.
  • Minimise data traffic.
  • Security, integrity and privacy issues  with shared data.
  • Efficient public-private data partitioning algorithms.
  • Optimal data structure to suit applications/services.
  • Efficient Information extraction.
Approach
  • Distributed caching in heterogeneous devices.
  • Neighborhood context awareness.
  • Hierarchical context aggregation and fusion.

Context-Aware Middleware Systems

Dig’it!: Context-Aware Sharing of Information and Services