ContextAware Group Management Middleware to Support Resource Sharing in MANET Environments

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Context-Aware Group Management Middleware to
Support Resource Sharing in MANET Environments

MDM 2005 Ayia Napa, Cyprus
Dario Bottazzi
dbottazzi_at_deis.unibo.it
12th May 2005
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Outline

• Group Membership Requirements and Solutions in
  Mobile Ad-Hoc Scenarios
• The AGAPE Framework
• Group Membership Management Model
• AGAPE Architecture
• Case Study
• Conclusions Future Work

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Group Collaboration Characteristics in MANETs

• Proximity-Based co-located group members are
  likely to operate more often than with the
  others. The members of the group can access only
  to locally available services and resources.
• Impromptu collaboration require no prior
  planning
• Transient interactions are short-lived

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New Challenges in Collaborative Applications

• Highly dynamic Nature of Ad-Hoc Groups
• Device Mobility, Run-Time Join-Leave
• Impromptu Nature of Collaboration Activities
• Collaboration Between Previously Unknown
  Partners
• Highly Dynamic Nature of MANETs
• Frequent Host Connections and Disconnections
• Frequent Network Partitions
• Heterogeneous Characteristics of Group Members
• Resource scarcity

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Recent Research Efforts

• Global Virtual Data Space-Based Systems (GVDS)
• LIME, PeerWare, XMiddle
• GVDS aim to coordinating
• Transiently shared data space that is partitioned
  between collaborating entities
• Group membership and communication coupled to
  the data space
• Profile-Based Collaboration Systems
• Proem, Konark
• At regular times each entity broadcasts its
  profile
• Application provided with the visibility of
  neighbors profiles
• Group membership relies on the implementation of
  the same application-level protocols

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The AGAPE Framework

• Context-Aware Group Membership and Communication
  Middleware
• Users have direct visibility of only locally
  available set of group members and
  characteristics (Context-dependent View)
• AGAPE Groups
• Set of autonomous entities that can communicate,
  collaborate with each other. All members agree on
  group activities, tasks and goals.
• Each group is characterized by a group unique
  identifier and by a group profile (commonly
  agreed interests, preferences, activities and
  goals)
• Two entity roles the Managed Entity (ME) and
  the Locality Manager Entity (LME)

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AGAPE Locality
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Architecture
Application
Group Management Layer

J/LMS
VMS
VMS
AGAPE

Basic Service Layer
PENS
PS
NMS
JVM-OS-HW-Network
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Case Study
Nick, Firefighter
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Case Study
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Case Study
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Experimental Results
Energy consumption for advertisement and group
view dissemination.
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Conclusions Future Works

• Group Management
• We have presented AGAPE, a context-aware group
  membership management solution tailored to MANET
  environments
• AGAPE provides the full visibility of co-located
  group members along with user attribute and
  device characteristics
• Future directions
• Introduce a security support for AGAPE
• Improve the initial group communication support
  we are implementing

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Thanks
Questions?