Opportunistic communication between two encountered nodes is commonly established using a radio
technology, such as Wi-Fi or Bluetooth. One issue involved in opportunistic communication is a trade-off
between connection time and probability of resource consumption. This paper presents a comprehensive study
on density analysis for decentralized distributed opportunistic communication using Wi-Fi technology. In this
work, study and analysis of contact probability and energy efficiency of variant density in a particular area are
performed. The contribution of this work is the analysis of the impact of density on the connection probability
and resources, as well as a simulation study framework to analyze the contact event with a view of energy
consumption. The study gave detailed contact information, such as contact probability based on node density
and transmission range in a particular area, as well as the beacon exchange process as an element of channel
utilization and energy consumption. The influence evaluation of various parameters on each other and finally on
the system performance is also presented.
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