The paper studies a noncooperative repeated game describing the behavior of mobileagents with directional antennas or a wireless sensor network. Periodically, agents must directantennas towards each other to exchange information. However, the actions required to turn theantenna are energy consuming, and a balance must be maintained between the informationrelevance and the energy consumed to maintain this relevance. Agents receive smaller payoff atthe stage in which they decide to exchange information, but win in subsequent stage by increasingthe relevance of information.