出版社：Academy & Industry Research Collaboration Center (AIRCC)
摘要：In energy harvesting IoT networks, an energy queue state of an IoT device will changedynamically and the number of IoT devices that transmit data to the IoT AP will vary in a frame.So we need a MAC protocol to adjust the frame length taking the amount of energy of IoTdevices into consideration. Since the existing Framed slotted ALOHA (F-ALOHA) MediumAccess Control (MAC) protocol utilizes the fixed frame size, the resource efficiency can bereduced. In this paper, we propose a Harvested Energy-adaptive Medium Access Control (HEMAC)protocol where an IoT Access Point (AP) allocates slots in accordance with the numberof IoT devices that try to transmit data in a frame. The proposed HE-MAC protocol improvesthe resource efficiency of the F-ALOHA MAC protocol. We show that the resource efficiency ofthe HE-MAC protocol is superior to those of the F-ALOHA MAC protocol through simulations.
关键词：Internet of Things; Energy Harvesting; Framed Slotted ALOHA; Medium Access Control.
