Enabling social interactions off the grid

Research output: Contribution to journalArticlepeer-review


The newer mobile social networking applications are built around encounters between users, and their success lies in efficiently discovering the presence of other users in the device's communication range. To take the first step toward enabling better use of Wi-Fi in social networking applications, a new protocol, dubbed Wi-Fi Direct, has been standardized that lets devices connect directly to each other over Wi-Fi. This effort for making peer-to-peer communication easier and more widespread has been boosted by the fact that Wi-Fi Direct has been integrated into the latest version of the Android OS, making it easier for developers to code applications based on the physical proximity of users. Searchlight is an asynchronous neighbor discovery protocol that strikes a balance between the two conflicting goals of low-power operation and small discovery latency. The CQuest neighbor discovery protocol embraces the use of the highpower radio during neighbor discovery without incurring the high overhead.

Original languageEnglish (US)
Article number6188325
Pages (from-to)8-11
Number of pages4
JournalIEEE Pervasive Computing
Issue number2
StatePublished - Apr 2012


  • CQuest protocol
  • Searchlight protocol
  • pervasive computing
  • proximity-based applications
  • smartphones

ASJC Scopus subject areas

  • Software
  • Computer Science Applications
  • Computational Theory and Mathematics


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