In certain aspects, an apparatus for wireless communication comprises an interface configured to receive reports from wireless nodes, wherein each of the reports includes an indication of a battery life of a respective one of the wireless nodes. The apparatus also comprises a processing system configured to determine a schedule for communication based on the reported battery lives of the wireless nodes. The interface is further configured to output data for transmission to the wireless nodes based on the schedule or to output signals for transmission to the wireless nodes based on the schedule, each of the signals instructing a respective one of the wireless nodes to transmit data to the apparatus.