A channel aware MAC protocol in an ALOHA network with selfish users

Youngmi Jin, George Kesidis, Ju Wook Jang

Research output: Contribution to journalArticlepeer-review

17 Scopus citations


We consider a game theoretic model incorporating channel state information into slotted ALOHA in a fading environment. Each user sets a threshold for her channel gain and sends a packet only when the channel gain is higher than the threshold at a given slot. This threshold is decided to maximize the net benefit of a user, utility minus power consumption. The asymptotic behaviors of the total throughput at a symmetric Nash equilibrium point are studied for fading and non-fading environments in a homogeneous system. It is shown that the total throughput in a fading environment increases as the number of users increases, while the total throughput in the simple classical slotted ALOHA decreases when users are sensitive enough to power consumption. Convergence to the symmetric Nash equilibrium is also studied.

Original languageEnglish (US)
Article number6117768
Pages (from-to)128-137
Number of pages10
JournalIEEE Journal on Selected Areas in Communications
Issue number1
StatePublished - Jan 2012

All Science Journal Classification (ASJC) codes

  • Computer Networks and Communications
  • Electrical and Electronic Engineering


Dive into the research topics of 'A channel aware MAC protocol in an ALOHA network with selfish users'. Together they form a unique fingerprint.

Cite this