2 METHOD FOR IMPROVING PACKET TRANSMISSION PERFORMANCE OF SECONDARY USER IN COGNITIVE RADIO NETWORKS AND APPARATUS THEREOF

摘要

The present invention relates to a method for improving packet transmission performance of a secondary user in a cognitive wireless network, and an apparatus thereof. According to the present invention, the method for improving packet transmission performance of a secondary user in a cognitive wireless network comprises the steps of: determining, by a secondary user device, a channel occupancy state of a primary user device by spectrum sensing; when the secondary user device approaches a channel occupied by the primary user device, determining an operation mode of a backscattering mode or an energy collection mode based on an energy level; and operating, by the secondary user device, in accordance with the determined operation mode.