Minimizing the Age of Information in Broadcast Wireless Networks

Kadota I., UYSAL BIYIKOĞLU E., Singh R., Modiano E.

54th Annual Allerton Conference on Communication, Control, and Computing (Allerton), Illinois, United States Of America, 27 - 30 September 2016, pp.844-851 identifier

  • Publication Type: Conference Paper / Full Text
  • City: Illinois
  • Country: United States Of America
  • Page Numbers: pp.844-851
  • Middle East Technical University Affiliated: Yes


We consider a wireless broadcast network with a base station sending time-sensitive information to a number of clients. The Age of Information (AoI), namely the amount of time that elapsed since the most recently delivered packet was generated, captures the freshness of the information. We formulate a discrete-time decision problem to find a scheduling policy that minimizes the expected weighted sum AoI of the clients in the network. To the best of our knowledge, this is the first work to provide a scheduling policy that optimizes AoI in a wireless network with unreliable channels.