Power-efficient dynamic BS muting in clustered cellular system

In this paper, dynamic traffic sharing and base station (BS) muting are incorporated into a clustered cellular system to reduce the total power consumption. Neighboring sectorized BSs form a cluster. Several BSs within the cluster can be muted as long as quality-of-service (QoS) requirement is met. Since the muted BS does not join the transmission, all the users within the cluster need to be served by the active BSs. A power consumption model is also established in this paper which is modeled as a function of traffic load, and incorporates the fixed, variable power consumptions in the system, as well as the power amplifier efficiency. Based on this model, the power saving gain under the effect of the additional traffic load due to BS muting will be discussed. The computer simulation results show that about 30% total power saving is achieved by dynamic traffic sharing and BS muting with clustered BS system.