Energy-efﬁcient fair channel access for IEEE 802.11 WLANs
MetadatosMostrar el registro completo del ítem
Greening the communication protocols is nowadays recognized as a primary design goal of future global network infrastructures. The objective function for optimization is the amount of information transmitted per unit of energy, replacing the amount of information transmitted per unit of time (i.e., throughput). In this paper we investigate the case of IEEE 802.11-based WLANs and ﬁrst show that, given the existing diversity of power consumption ﬁgures among mobile devices, performing a fair allocation of resources among devices is challenging. We then propose a criterion to objectively balance between the most energy-efﬁcient conﬁguration (where all resources are given to the single most energy efﬁcient device) and the throughput-optimal allocation (where all devices evenly share the resources regardless of their power consumption). By means of analytical modeling, we derive a closed-form expression for the optimal conﬁguration of the WLANs with respect to the energy-efﬁciency criterion. We validate our analysis through simulations, and show that our approach betters the prevalent allocation schemes discussed in literature in terms of energy efﬁciency, while maintaining the notion of fairness among competing devices.
MateriasQ Science::Q Science (General)
Q Science::QA Mathematics::QA75 Electronic computers. Computer science
T Technology::T Technology (General)
T Technology::TA Engineering (General). Civil engineering (General)
T Technology::TK Electrical engineering. Electronics Nuclear engineering